drivers/scsi/qla4xxx/ql4_os.c

   1 /*
   2  * QLogic iSCSI HBA Driver
   3  * Copyright (c)  2003-2013 QLogic Corporation
   4  *
   5  * See LICENSE.qla4xxx for copyright and licensing details.
   6  */
   7 #include <linux/moduleparam.h>
   8 #include <linux/slab.h>
   9 #include <linux/blkdev.h>
  10 #include <linux/iscsi_boot_sysfs.h>
  11 #include <linux/inet.h>
  12
  13 #include <scsi/scsi_tcq.h>
  14 #include <scsi/scsicam.h>
  15
  16 #include "ql4_def.h"
  17 #include "ql4_version.h"
  18 #include "ql4_glbl.h"
  19 #include "ql4_dbg.h"
  20 #include "ql4_inline.h"
  21 #include "ql4_83xx.h"
  22
  23 /*
  24  * Driver version
  25  */
  26 static char qla4xxx_version_str[40];
  27
  28 /*
  29  * SRB allocation cache
  30  */
  31 static struct kmem_cache *srb_cachep;
  32
  33 /*
  34  * Module parameter information and variables
  35  */
  36 static int ql4xdisablesysfsboot = 1;
  37 module_param(ql4xdisablesysfsboot, int, S_IRUGO | S_IWUSR);
  38 MODULE_PARM_DESC(ql4xdisablesysfsboot,
  39                  " Set to disable exporting boot targets to sysfs.\n"
  40                  "\t\t  0 - Export boot targets\n"
  41                  "\t\t  1 - Do not export boot targets (Default)");
  42
  43 int ql4xdontresethba;
  44 module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
  45 MODULE_PARM_DESC(ql4xdontresethba,
  46                  " Don't reset the HBA for driver recovery.\n"
  47                  "\t\t  0 - It will reset HBA (Default)\n"
  48                  "\t\t  1 - It will NOT reset HBA");
  49
  50 int ql4xextended_error_logging;
  51 module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
  52 MODULE_PARM_DESC(ql4xextended_error_logging,
  53                  " Option to enable extended error logging.\n"
  54                  "\t\t  0 - no logging (Default)\n"
  55                  "\t\t  2 - debug logging");
  56
  57 int ql4xenablemsix = 1;
  58 module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
  59 MODULE_PARM_DESC(ql4xenablemsix,
  60                  " Set to enable MSI or MSI-X interrupt mechanism.\n"
  61                  "\t\t  0 = enable INTx interrupt mechanism.\n"
  62                  "\t\t  1 = enable MSI-X interrupt mechanism (Default).\n"
  63                  "\t\t  2 = enable MSI interrupt mechanism.");
  64
  65 #define QL4_DEF_QDEPTH 32
  66 static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
  67 module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
  68 MODULE_PARM_DESC(ql4xmaxqdepth,
  69                  " Maximum queue depth to report for target devices.\n"
  70                  "\t\t  Default: 32.");
  71
  72 static int ql4xqfulltracking = 1;
  73 module_param(ql4xqfulltracking, int, S_IRUGO | S_IWUSR);
  74 MODULE_PARM_DESC(ql4xqfulltracking,
  75                  " Enable or disable dynamic tracking and adjustment of\n"
  76                  "\t\t scsi device queue depth.\n"
  77                  "\t\t  0 - Disable.\n"
  78                  "\t\t  1 - Enable. (Default)");
  79
  80 static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
  81 module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
  82 MODULE_PARM_DESC(ql4xsess_recovery_tmo,
  83                 " Target Session Recovery Timeout.\n"
  84                 "\t\t  Default: 120 sec.");
  85
  86 int ql4xmdcapmask = 0;
  87 module_param(ql4xmdcapmask, int, S_IRUGO);
  88 MODULE_PARM_DESC(ql4xmdcapmask,
  89                  " Set the Minidump driver capture mask level.\n"
  90                  "\t\t  Default is 0 (firmware default capture mask)\n"
  91                  "\t\t  Can be set to 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F, 0xFF");
  92
  93 int ql4xenablemd = 1;
  94 module_param(ql4xenablemd, int, S_IRUGO | S_IWUSR);
  95 MODULE_PARM_DESC(ql4xenablemd,
  96                  " Set to enable minidump.\n"
  97                  "\t\t  0 - disable minidump\n"
  98                  "\t\t  1 - enable minidump (Default)");
  99
 100 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha);
 101 /*
 102  * SCSI host template entry points
 103  */
 104 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
 105
 106 /*
 107  * iSCSI template entry points
 108  */
 109 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
 110                                      enum iscsi_param param, char *buf);
 111 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
 112                                   enum iscsi_param param, char *buf);
 113 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
 114                                   enum iscsi_host_param param, char *buf);
 115 static int qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data,
 116                                    uint32_t len);
 117 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
 118                                    enum iscsi_param_type param_type,
 119                                    int param, char *buf);
 120 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
 121 static struct iscsi_endpoint *qla4xxx_ep_connect(struct Scsi_Host *shost,
 122                                                  struct sockaddr *dst_addr,
 123                                                  int non_blocking);
 124 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms);
 125 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep);
 126 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
 127                                 enum iscsi_param param, char *buf);
 128 static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
 129 static struct iscsi_cls_conn *
 130 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx);
 131 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
 132                              struct iscsi_cls_conn *cls_conn,
 133                              uint64_t transport_fd, int is_leading);
 134 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *conn);
 135 static struct iscsi_cls_session *
 136 qla4xxx_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
 137                         uint16_t qdepth, uint32_t initial_cmdsn);
 138 static void qla4xxx_session_destroy(struct iscsi_cls_session *sess);
 139 static void qla4xxx_task_work(struct work_struct *wdata);
 140 static int qla4xxx_alloc_pdu(struct iscsi_task *, uint8_t);
 141 static int qla4xxx_task_xmit(struct iscsi_task *);
 142 static void qla4xxx_task_cleanup(struct iscsi_task *);
 143 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session);
 144 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
 145                                    struct iscsi_stats *stats);
 146 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
 147                              uint32_t iface_type, uint32_t payload_size,
 148                              uint32_t pid, struct sockaddr *dst_addr);
 149 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 150                                  uint32_t *num_entries, char *buf);
 151 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx);
 152 static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void  *data,
 153                                   int len);
 154 static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len);
 155
 156 /*
 157  * SCSI host template entry points
 158  */
 159 static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
 160 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
 161 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
 162 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
 163 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
 164 static int qla4xxx_slave_alloc(struct scsi_device *device);
 165 static umode_t qla4_attr_is_visible(int param_type, int param);
 166 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
 167
 168 /*
 169  * iSCSI Flash DDB sysfs entry points
 170  */
 171 static int
 172 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
 173                             struct iscsi_bus_flash_conn *fnode_conn,
 174                             void *data, int len);
 175 static int
 176 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
 177                             int param, char *buf);
 178 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
 179                                  int len);
 180 static int
 181 qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess);
 182 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
 183                                    struct iscsi_bus_flash_conn *fnode_conn);
 184 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
 185                                     struct iscsi_bus_flash_conn *fnode_conn);
 186 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess);
 187
 188 static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
 189     QLA82XX_LEGACY_INTR_CONFIG;
 190
 191 static struct scsi_host_template qla4xxx_driver_template = {
 192         .module                 = THIS_MODULE,
 193         .name                   = DRIVER_NAME,
 194         .proc_name              = DRIVER_NAME,
 195         .queuecommand           = qla4xxx_queuecommand,
 196
 197         .eh_abort_handler       = qla4xxx_eh_abort,
 198         .eh_device_reset_handler = qla4xxx_eh_device_reset,
 199         .eh_target_reset_handler = qla4xxx_eh_target_reset,
 200         .eh_host_reset_handler  = qla4xxx_eh_host_reset,
 201         .eh_timed_out           = qla4xxx_eh_cmd_timed_out,
 202
 203         .slave_alloc            = qla4xxx_slave_alloc,
 204         .change_queue_depth     = scsi_change_queue_depth,
 205
 206         .this_id                = -1,
 207         .cmd_per_lun            = 3,
 208         .sg_tablesize           = SG_ALL,
 209
 210         .max_sectors            = 0xFFFF,
 211         .shost_attrs            = qla4xxx_host_attrs,
 212         .host_reset             = qla4xxx_host_reset,
 213         .vendor_id              = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
 214 };
 215
 216 static struct iscsi_transport qla4xxx_iscsi_transport = {
 217         .owner                  = THIS_MODULE,
 218         .name                   = DRIVER_NAME,
 219         .caps                   = CAP_TEXT_NEGO |
 220                                   CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
 221                                   CAP_DATADGST | CAP_LOGIN_OFFLOAD |
 222                                   CAP_MULTI_R2T,
 223         .attr_is_visible        = qla4_attr_is_visible,
 224         .create_session         = qla4xxx_session_create,
 225         .destroy_session        = qla4xxx_session_destroy,
 226         .start_conn             = qla4xxx_conn_start,
 227         .create_conn            = qla4xxx_conn_create,
 228         .bind_conn              = qla4xxx_conn_bind,
 229         .stop_conn              = iscsi_conn_stop,
 230         .destroy_conn           = qla4xxx_conn_destroy,
 231         .set_param              = iscsi_set_param,
 232         .get_conn_param         = qla4xxx_conn_get_param,
 233         .get_session_param      = qla4xxx_session_get_param,
 234         .get_ep_param           = qla4xxx_get_ep_param,
 235         .ep_connect             = qla4xxx_ep_connect,
 236         .ep_poll                = qla4xxx_ep_poll,
 237         .ep_disconnect          = qla4xxx_ep_disconnect,
 238         .get_stats              = qla4xxx_conn_get_stats,
 239         .send_pdu               = iscsi_conn_send_pdu,
 240         .xmit_task              = qla4xxx_task_xmit,
 241         .cleanup_task           = qla4xxx_task_cleanup,
 242         .alloc_pdu              = qla4xxx_alloc_pdu,
 243
 244         .get_host_param         = qla4xxx_host_get_param,
 245         .set_iface_param        = qla4xxx_iface_set_param,
 246         .get_iface_param        = qla4xxx_get_iface_param,
 247         .bsg_request            = qla4xxx_bsg_request,
 248         .send_ping              = qla4xxx_send_ping,
 249         .get_chap               = qla4xxx_get_chap_list,
 250         .delete_chap            = qla4xxx_delete_chap,
 251         .set_chap               = qla4xxx_set_chap_entry,
 252         .get_flashnode_param    = qla4xxx_sysfs_ddb_get_param,
 253         .set_flashnode_param    = qla4xxx_sysfs_ddb_set_param,
 254         .new_flashnode          = qla4xxx_sysfs_ddb_add,
 255         .del_flashnode          = qla4xxx_sysfs_ddb_delete,
 256         .login_flashnode        = qla4xxx_sysfs_ddb_login,
 257         .logout_flashnode       = qla4xxx_sysfs_ddb_logout,
 258         .logout_flashnode_sid   = qla4xxx_sysfs_ddb_logout_sid,
 259         .get_host_stats         = qla4xxx_get_host_stats,
 260 };
 261
 262 static struct scsi_transport_template *qla4xxx_scsi_transport;
 263
 264 static int qla4xxx_isp_check_reg(struct scsi_qla_host *ha)
 265 {
 266         u32 reg_val = 0;
 267         int rval = QLA_SUCCESS;
 268
 269         if (is_qla8022(ha))
 270                 reg_val = readl(&ha->qla4_82xx_reg->host_status);
 271         else if (is_qla8032(ha) || is_qla8042(ha))
 272                 reg_val = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_ALIVE_COUNTER);
 273         else
 274                 reg_val = readw(&ha->reg->ctrl_status);
 275
 276         if (reg_val == QL4_ISP_REG_DISCONNECT)
 277                 rval = QLA_ERROR;
 278
 279         return rval;
 280 }
 281
 282 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
 283                              uint32_t iface_type, uint32_t payload_size,
 284                              uint32_t pid, struct sockaddr *dst_addr)
 285 {
 286         struct scsi_qla_host *ha = to_qla_host(shost);
 287         struct sockaddr_in *addr;
 288         struct sockaddr_in6 *addr6;
 289         uint32_t options = 0;
 290         uint8_t ipaddr[IPv6_ADDR_LEN];
 291         int rval;
 292
 293         memset(ipaddr, 0, IPv6_ADDR_LEN);
 294         /* IPv4 to IPv4 */
 295         if ((iface_type == ISCSI_IFACE_TYPE_IPV4) &&
 296             (dst_addr->sa_family == AF_INET)) {
 297                 addr = (struct sockaddr_in *)dst_addr;
 298                 memcpy(ipaddr, &addr->sin_addr.s_addr, IP_ADDR_LEN);
 299                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv4 Ping src: %pI4 "
 300                                   "dest: %pI4\n", __func__,
 301                                   &ha->ip_config.ip_address, ipaddr));
 302                 rval = qla4xxx_ping_iocb(ha, options, payload_size, pid,
 303                                          ipaddr);
 304                 if (rval)
 305                         rval = -EINVAL;
 306         } else if ((iface_type == ISCSI_IFACE_TYPE_IPV6) &&
 307                    (dst_addr->sa_family == AF_INET6)) {
 308                 /* IPv6 to IPv6 */
 309                 addr6 = (struct sockaddr_in6 *)dst_addr;
 310                 memcpy(ipaddr, &addr6->sin6_addr.in6_u.u6_addr8, IPv6_ADDR_LEN);
 311
 312                 options |= PING_IPV6_PROTOCOL_ENABLE;
 313
 314                 /* Ping using LinkLocal address */
 315                 if ((iface_num == 0) || (iface_num == 1)) {
 316                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: LinkLocal Ping "
 317                                           "src: %pI6 dest: %pI6\n", __func__,
 318                                           &ha->ip_config.ipv6_link_local_addr,
 319                                           ipaddr));
 320                         options |= PING_IPV6_LINKLOCAL_ADDR;
 321                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 322                                                  pid, ipaddr);
 323                 } else {
 324                         ql4_printk(KERN_WARNING, ha, "%s: iface num = %d "
 325                                    "not supported\n", __func__, iface_num);
 326                         rval = -ENOSYS;
 327                         goto exit_send_ping;
 328                 }
 329
 330                 /*
 331                  * If ping using LinkLocal address fails, try ping using
 332                  * IPv6 address
 333                  */
 334                 if (rval != QLA_SUCCESS) {
 335                         options &= ~PING_IPV6_LINKLOCAL_ADDR;
 336                         if (iface_num == 0) {
 337                                 options |= PING_IPV6_ADDR0;
 338                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 339                                                   "Ping src: %pI6 "
 340                                                   "dest: %pI6\n", __func__,
 341                                                   &ha->ip_config.ipv6_addr0,
 342                                                   ipaddr));
 343                         } else if (iface_num == 1) {
 344                                 options |= PING_IPV6_ADDR1;
 345                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 346                                                   "Ping src: %pI6 "
 347                                                   "dest: %pI6\n", __func__,
 348                                                   &ha->ip_config.ipv6_addr1,
 349                                                   ipaddr));
 350                         }
 351                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 352                                                  pid, ipaddr);
 353                         if (rval)
 354                                 rval = -EINVAL;
 355                 }
 356         } else
 357                 rval = -ENOSYS;
 358 exit_send_ping:
 359         return rval;
 360 }
 361
 362 static umode_t qla4_attr_is_visible(int param_type, int param)
 363 {
 364         switch (param_type) {
 365         case ISCSI_HOST_PARAM:
 366                 switch (param) {
 367                 case ISCSI_HOST_PARAM_HWADDRESS:
 368                 case ISCSI_HOST_PARAM_IPADDRESS:
 369                 case ISCSI_HOST_PARAM_INITIATOR_NAME:
 370                 case ISCSI_HOST_PARAM_PORT_STATE:
 371                 case ISCSI_HOST_PARAM_PORT_SPEED:
 372                         return S_IRUGO;
 373                 default:
 374                         return 0;
 375                 }
 376         case ISCSI_PARAM:
 377                 switch (param) {
 378                 case ISCSI_PARAM_PERSISTENT_ADDRESS:
 379                 case ISCSI_PARAM_PERSISTENT_PORT:
 380                 case ISCSI_PARAM_CONN_ADDRESS:
 381                 case ISCSI_PARAM_CONN_PORT:
 382                 case ISCSI_PARAM_TARGET_NAME:
 383                 case ISCSI_PARAM_TPGT:
 384                 case ISCSI_PARAM_TARGET_ALIAS:
 385                 case ISCSI_PARAM_MAX_BURST:
 386                 case ISCSI_PARAM_MAX_R2T:
 387                 case ISCSI_PARAM_FIRST_BURST:
 388                 case ISCSI_PARAM_MAX_RECV_DLENGTH:
 389                 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
 390                 case ISCSI_PARAM_IFACE_NAME:
 391                 case ISCSI_PARAM_CHAP_OUT_IDX:
 392                 case ISCSI_PARAM_CHAP_IN_IDX:
 393                 case ISCSI_PARAM_USERNAME:
 394                 case ISCSI_PARAM_PASSWORD:
 395                 case ISCSI_PARAM_USERNAME_IN:
 396                 case ISCSI_PARAM_PASSWORD_IN:
 397                 case ISCSI_PARAM_AUTO_SND_TGT_DISABLE:
 398                 case ISCSI_PARAM_DISCOVERY_SESS:
 399                 case ISCSI_PARAM_PORTAL_TYPE:
 400                 case ISCSI_PARAM_CHAP_AUTH_EN:
 401                 case ISCSI_PARAM_DISCOVERY_LOGOUT_EN:
 402                 case ISCSI_PARAM_BIDI_CHAP_EN:
 403                 case ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL:
 404                 case ISCSI_PARAM_DEF_TIME2WAIT:
 405                 case ISCSI_PARAM_DEF_TIME2RETAIN:
 406                 case ISCSI_PARAM_HDRDGST_EN:
 407                 case ISCSI_PARAM_DATADGST_EN:
 408                 case ISCSI_PARAM_INITIAL_R2T_EN:
 409                 case ISCSI_PARAM_IMM_DATA_EN:
 410                 case ISCSI_PARAM_PDU_INORDER_EN:
 411                 case ISCSI_PARAM_DATASEQ_INORDER_EN:
 412                 case ISCSI_PARAM_MAX_SEGMENT_SIZE:
 413                 case ISCSI_PARAM_TCP_TIMESTAMP_STAT:
 414                 case ISCSI_PARAM_TCP_WSF_DISABLE:
 415                 case ISCSI_PARAM_TCP_NAGLE_DISABLE:
 416                 case ISCSI_PARAM_TCP_TIMER_SCALE:
 417                 case ISCSI_PARAM_TCP_TIMESTAMP_EN:
 418                 case ISCSI_PARAM_TCP_XMIT_WSF:
 419                 case ISCSI_PARAM_TCP_RECV_WSF:
 420                 case ISCSI_PARAM_IP_FRAGMENT_DISABLE:
 421                 case ISCSI_PARAM_IPV4_TOS:
 422                 case ISCSI_PARAM_IPV6_TC:
 423                 case ISCSI_PARAM_IPV6_FLOW_LABEL:
 424                 case ISCSI_PARAM_IS_FW_ASSIGNED_IPV6:
 425                 case ISCSI_PARAM_KEEPALIVE_TMO:
 426                 case ISCSI_PARAM_LOCAL_PORT:
 427                 case ISCSI_PARAM_ISID:
 428                 case ISCSI_PARAM_TSID:
 429                 case ISCSI_PARAM_DEF_TASKMGMT_TMO:
 430                 case ISCSI_PARAM_ERL:
 431                 case ISCSI_PARAM_STATSN:
 432                 case ISCSI_PARAM_EXP_STATSN:
 433                 case ISCSI_PARAM_DISCOVERY_PARENT_IDX:
 434                 case ISCSI_PARAM_DISCOVERY_PARENT_TYPE:
 435                 case ISCSI_PARAM_LOCAL_IPADDR:
 436                         return S_IRUGO;
 437                 default:
 438                         return 0;
 439                 }
 440         case ISCSI_NET_PARAM:
 441                 switch (param) {
 442                 case ISCSI_NET_PARAM_IPV4_ADDR:
 443                 case ISCSI_NET_PARAM_IPV4_SUBNET:
 444                 case ISCSI_NET_PARAM_IPV4_GW:
 445                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 446                 case ISCSI_NET_PARAM_IFACE_ENABLE:
 447                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
 448                 case ISCSI_NET_PARAM_IPV6_ADDR:
 449                 case ISCSI_NET_PARAM_IPV6_ROUTER:
 450                 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
 451                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
 452                 case ISCSI_NET_PARAM_VLAN_ID:
 453                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
 454                 case ISCSI_NET_PARAM_VLAN_ENABLED:
 455                 case ISCSI_NET_PARAM_MTU:
 456                 case ISCSI_NET_PARAM_PORT:
 457                 case ISCSI_NET_PARAM_IPADDR_STATE:
 458                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE:
 459                 case ISCSI_NET_PARAM_IPV6_ROUTER_STATE:
 460                 case ISCSI_NET_PARAM_DELAYED_ACK_EN:
 461                 case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
 462                 case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
 463                 case ISCSI_NET_PARAM_TCP_WSF:
 464                 case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
 465                 case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
 466                 case ISCSI_NET_PARAM_CACHE_ID:
 467                 case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
 468                 case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
 469                 case ISCSI_NET_PARAM_IPV4_TOS_EN:
 470                 case ISCSI_NET_PARAM_IPV4_TOS:
 471                 case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
 472                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
 473                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
 474                 case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
 475                 case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
 476                 case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
 477                 case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
 478                 case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
 479                 case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
 480                 case ISCSI_NET_PARAM_REDIRECT_EN:
 481                 case ISCSI_NET_PARAM_IPV4_TTL:
 482                 case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
 483                 case ISCSI_NET_PARAM_IPV6_MLD_EN:
 484                 case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
 485                 case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
 486                 case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
 487                 case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
 488                 case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
 489                 case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
 490                 case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
 491                 case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
 492                         return S_IRUGO;
 493                 default:
 494                         return 0;
 495                 }
 496         case ISCSI_IFACE_PARAM:
 497                 switch (param) {
 498                 case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
 499                 case ISCSI_IFACE_PARAM_HDRDGST_EN:
 500                 case ISCSI_IFACE_PARAM_DATADGST_EN:
 501                 case ISCSI_IFACE_PARAM_IMM_DATA_EN:
 502                 case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
 503                 case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
 504                 case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
 505                 case ISCSI_IFACE_PARAM_ERL:
 506                 case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
 507                 case ISCSI_IFACE_PARAM_FIRST_BURST:
 508                 case ISCSI_IFACE_PARAM_MAX_R2T:
 509                 case ISCSI_IFACE_PARAM_MAX_BURST:
 510                 case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
 511                 case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
 512                 case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
 513                 case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
 514                 case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
 515                 case ISCSI_IFACE_PARAM_INITIATOR_NAME:
 516                         return S_IRUGO;
 517                 default:
 518                         return 0;
 519                 }
 520         case ISCSI_FLASHNODE_PARAM:
 521                 switch (param) {
 522                 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
 523                 case ISCSI_FLASHNODE_PORTAL_TYPE:
 524                 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
 525                 case ISCSI_FLASHNODE_DISCOVERY_SESS:
 526                 case ISCSI_FLASHNODE_ENTRY_EN:
 527                 case ISCSI_FLASHNODE_HDR_DGST_EN:
 528                 case ISCSI_FLASHNODE_DATA_DGST_EN:
 529                 case ISCSI_FLASHNODE_IMM_DATA_EN:
 530                 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
 531                 case ISCSI_FLASHNODE_DATASEQ_INORDER:
 532                 case ISCSI_FLASHNODE_PDU_INORDER:
 533                 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
 534                 case ISCSI_FLASHNODE_SNACK_REQ_EN:
 535                 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
 536                 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
 537                 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
 538                 case ISCSI_FLASHNODE_ERL:
 539                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
 540                 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
 541                 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
 542                 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
 543                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
 544                 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
 545                 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
 546                 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
 547                 case ISCSI_FLASHNODE_FIRST_BURST:
 548                 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
 549                 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
 550                 case ISCSI_FLASHNODE_MAX_R2T:
 551                 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
 552                 case ISCSI_FLASHNODE_ISID:
 553                 case ISCSI_FLASHNODE_TSID:
 554                 case ISCSI_FLASHNODE_PORT:
 555                 case ISCSI_FLASHNODE_MAX_BURST:
 556                 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
 557                 case ISCSI_FLASHNODE_IPADDR:
 558                 case ISCSI_FLASHNODE_ALIAS:
 559                 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
 560                 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
 561                 case ISCSI_FLASHNODE_LOCAL_PORT:
 562                 case ISCSI_FLASHNODE_IPV4_TOS:
 563                 case ISCSI_FLASHNODE_IPV6_TC:
 564                 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
 565                 case ISCSI_FLASHNODE_NAME:
 566                 case ISCSI_FLASHNODE_TPGT:
 567                 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
 568                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
 569                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
 570                 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
 571                 case ISCSI_FLASHNODE_TCP_RECV_WSF:
 572                 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
 573                 case ISCSI_FLASHNODE_USERNAME:
 574                 case ISCSI_FLASHNODE_PASSWORD:
 575                 case ISCSI_FLASHNODE_STATSN:
 576                 case ISCSI_FLASHNODE_EXP_STATSN:
 577                 case ISCSI_FLASHNODE_IS_BOOT_TGT:
 578                         return S_IRUGO;
 579                 default:
 580                         return 0;
 581                 }
 582         }
 583
 584         return 0;
 585 }
 586
 587 /**
 588  * qla4xxx_create chap_list - Create CHAP list from FLASH
 589  * @ha: pointer to adapter structure
 590  *
 591  * Read flash and make a list of CHAP entries, during login when a CHAP entry
 592  * is received, it will be checked in this list. If entry exist then the CHAP
 593  * entry index is set in the DDB. If CHAP entry does not exist in this list
 594  * then a new entry is added in FLASH in CHAP table and the index obtained is
 595  * used in the DDB.
 596  **/
 597 static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
 598 {
 599         int rval = 0;
 600         uint8_t *chap_flash_data = NULL;
 601         uint32_t offset;
 602         dma_addr_t chap_dma;
 603         uint32_t chap_size = 0;
 604
 605         if (is_qla40XX(ha))
 606                 chap_size = MAX_CHAP_ENTRIES_40XX *
 607                             sizeof(struct ql4_chap_table);
 608         else    /* Single region contains CHAP info for both
 609                  * ports which is divided into half for each port.
 610                  */
 611                 chap_size = ha->hw.flt_chap_size / 2;
 612
 613         chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
 614                                              &chap_dma, GFP_KERNEL);
 615         if (!chap_flash_data) {
 616                 ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
 617                 return;
 618         }
 619
 620         if (is_qla40XX(ha)) {
 621                 offset = FLASH_CHAP_OFFSET;
 622         } else {
 623                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
 624                 if (ha->port_num == 1)
 625                         offset += chap_size;
 626         }
 627
 628         rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
 629         if (rval != QLA_SUCCESS)
 630                 goto exit_chap_list;
 631
 632         if (ha->chap_list == NULL)
 633                 ha->chap_list = vmalloc(chap_size);
 634         if (ha->chap_list == NULL) {
 635                 ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
 636                 goto exit_chap_list;
 637         }
 638
 639         memset(ha->chap_list, 0, chap_size);
 640         memcpy(ha->chap_list, chap_flash_data, chap_size);
 641
 642 exit_chap_list:
 643         dma_free_coherent(&ha->pdev->dev, chap_size, chap_flash_data, chap_dma);
 644 }
 645
 646 static int qla4xxx_get_chap_by_index(struct scsi_qla_host *ha,
 647                                      int16_t chap_index,
 648                                      struct ql4_chap_table **chap_entry)
 649 {
 650         int rval = QLA_ERROR;
 651         int max_chap_entries;
 652
 653         if (!ha->chap_list) {
 654                 ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
 655                 rval = QLA_ERROR;
 656                 goto exit_get_chap;
 657         }
 658
 659         if (is_qla80XX(ha))
 660                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 661                                    sizeof(struct ql4_chap_table);
 662         else
 663                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 664
 665         if (chap_index > max_chap_entries) {
 666                 ql4_printk(KERN_ERR, ha, "Invalid Chap index\n");
 667                 rval = QLA_ERROR;
 668                 goto exit_get_chap;
 669         }
 670
 671         *chap_entry = (struct ql4_chap_table *)ha->chap_list + chap_index;
 672         if ((*chap_entry)->cookie !=
 673              __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
 674                 rval = QLA_ERROR;
 675                 *chap_entry = NULL;
 676         } else {
 677                 rval = QLA_SUCCESS;
 678         }
 679
 680 exit_get_chap:
 681         return rval;
 682 }
 683
 684 /**
 685  * qla4xxx_find_free_chap_index - Find the first free chap index
 686  * @ha: pointer to adapter structure
 687  * @chap_index: CHAP index to be returned
 688  *
 689  * Find the first free chap index available in the chap table
 690  *
 691  * Note: Caller should acquire the chap lock before getting here.
 692  **/
 693 static int qla4xxx_find_free_chap_index(struct scsi_qla_host *ha,
 694                                         uint16_t *chap_index)
 695 {
 696         int i, rval;
 697         int free_index = -1;
 698         int max_chap_entries = 0;
 699         struct ql4_chap_table *chap_table;
 700
 701         if (is_qla80XX(ha))
 702                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 703                                                 sizeof(struct ql4_chap_table);
 704         else
 705                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 706
 707         if (!ha->chap_list) {
 708                 ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
 709                 rval = QLA_ERROR;
 710                 goto exit_find_chap;
 711         }
 712
 713         for (i = 0; i < max_chap_entries; i++) {
 714                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 715
 716                 if ((chap_table->cookie !=
 717                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) &&
 718                    (i > MAX_RESRV_CHAP_IDX)) {
 719                                 free_index = i;
 720                                 break;
 721                 }
 722         }
 723
 724         if (free_index != -1) {
 725                 *chap_index = free_index;
 726                 rval = QLA_SUCCESS;
 727         } else {
 728                 rval = QLA_ERROR;
 729         }
 730
 731 exit_find_chap:
 732         return rval;
 733 }
 734
 735 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 736                                   uint32_t *num_entries, char *buf)
 737 {
 738         struct scsi_qla_host *ha = to_qla_host(shost);
 739         struct ql4_chap_table *chap_table;
 740         struct iscsi_chap_rec *chap_rec;
 741         int max_chap_entries = 0;
 742         int valid_chap_entries = 0;
 743         int ret = 0, i;
 744
 745         if (is_qla80XX(ha))
 746                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 747                                         sizeof(struct ql4_chap_table);
 748         else
 749                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 750
 751         ql4_printk(KERN_INFO, ha, "%s: num_entries = %d, CHAP idx = %d\n",
 752                         __func__, *num_entries, chap_tbl_idx);
 753
 754         if (!buf) {
 755                 ret = -ENOMEM;
 756                 goto exit_get_chap_list;
 757         }
 758
 759         qla4xxx_create_chap_list(ha);
 760
 761         chap_rec = (struct iscsi_chap_rec *) buf;
 762         mutex_lock(&ha->chap_sem);
 763         for (i = chap_tbl_idx; i < max_chap_entries; i++) {
 764                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 765                 if (chap_table->cookie !=
 766                     __constant_cpu_to_le16(CHAP_VALID_COOKIE))
 767                         continue;
 768
 769                 chap_rec->chap_tbl_idx = i;
 770                 strlcpy(chap_rec->username, chap_table->name,
 771                         ISCSI_CHAP_AUTH_NAME_MAX_LEN);
 772                 strlcpy(chap_rec->password, chap_table->secret,
 773                         QL4_CHAP_MAX_SECRET_LEN);
 774                 chap_rec->password_length = chap_table->secret_len;
 775
 776                 if (chap_table->flags & BIT_7) /* local */
 777                         chap_rec->chap_type = CHAP_TYPE_OUT;
 778
 779                 if (chap_table->flags & BIT_6) /* peer */
 780                         chap_rec->chap_type = CHAP_TYPE_IN;
 781
 782                 chap_rec++;
 783
 784                 valid_chap_entries++;
 785                 if (valid_chap_entries == *num_entries)
 786                         break;
 787                 else
 788                         continue;
 789         }
 790         mutex_unlock(&ha->chap_sem);
 791
 792 exit_get_chap_list:
 793         ql4_printk(KERN_INFO, ha, "%s: Valid CHAP Entries = %d\n",
 794                         __func__,  valid_chap_entries);
 795         *num_entries = valid_chap_entries;
 796         return ret;
 797 }
 798
 799 static int __qla4xxx_is_chap_active(struct device *dev, void *data)
 800 {
 801         int ret = 0;
 802         uint16_t *chap_tbl_idx = (uint16_t *) data;
 803         struct iscsi_cls_session *cls_session;
 804         struct iscsi_session *sess;
 805         struct ddb_entry *ddb_entry;
 806
 807         if (!iscsi_is_session_dev(dev))
 808                 goto exit_is_chap_active;
 809
 810         cls_session = iscsi_dev_to_session(dev);
 811         sess = cls_session->dd_data;
 812         ddb_entry = sess->dd_data;
 813
 814         if (iscsi_session_chkready(cls_session))
 815                 goto exit_is_chap_active;
 816
 817         if (ddb_entry->chap_tbl_idx == *chap_tbl_idx)
 818                 ret = 1;
 819
 820 exit_is_chap_active:
 821         return ret;
 822 }
 823
 824 static int qla4xxx_is_chap_active(struct Scsi_Host *shost,
 825                                   uint16_t chap_tbl_idx)
 826 {
 827         int ret = 0;
 828
 829         ret = device_for_each_child(&shost->shost_gendev, &chap_tbl_idx,
 830                                     __qla4xxx_is_chap_active);
 831
 832         return ret;
 833 }
 834
 835 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx)
 836 {
 837         struct scsi_qla_host *ha = to_qla_host(shost);
 838         struct ql4_chap_table *chap_table;
 839         dma_addr_t chap_dma;
 840         int max_chap_entries = 0;
 841         uint32_t offset = 0;
 842         uint32_t chap_size;
 843         int ret = 0;
 844
 845         chap_table = dma_pool_zalloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
 846         if (chap_table == NULL)
 847                 return -ENOMEM;
 848
 849         if (is_qla80XX(ha))
 850                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 851                                    sizeof(struct ql4_chap_table);
 852         else
 853                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 854
 855         if (chap_tbl_idx > max_chap_entries) {
 856                 ret = -EINVAL;
 857                 goto exit_delete_chap;
 858         }
 859
 860         /* Check if chap index is in use.
 861          * If chap is in use don't delet chap entry */
 862         ret = qla4xxx_is_chap_active(shost, chap_tbl_idx);
 863         if (ret) {
 864                 ql4_printk(KERN_INFO, ha, "CHAP entry %d is in use, cannot "
 865                            "delete from flash\n", chap_tbl_idx);
 866                 ret = -EBUSY;
 867                 goto exit_delete_chap;
 868         }
 869
 870         chap_size = sizeof(struct ql4_chap_table);
 871         if (is_qla40XX(ha))
 872                 offset = FLASH_CHAP_OFFSET | (chap_tbl_idx * chap_size);
 873         else {
 874                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
 875                 /* flt_chap_size is CHAP table size for both ports
 876                  * so divide it by 2 to calculate the offset for second port
 877                  */
 878                 if (ha->port_num == 1)
 879                         offset += (ha->hw.flt_chap_size / 2);
 880                 offset += (chap_tbl_idx * chap_size);
 881         }
 882
 883         ret = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
 884         if (ret != QLA_SUCCESS) {
 885                 ret = -EINVAL;
 886                 goto exit_delete_chap;
 887         }
 888
 889         DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
 890                           __le16_to_cpu(chap_table->cookie)));
 891
 892         if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
 893                 ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
 894                 goto exit_delete_chap;
 895         }
 896
 897         chap_table->cookie = __constant_cpu_to_le16(0xFFFF);
 898
 899         offset = FLASH_CHAP_OFFSET |
 900                         (chap_tbl_idx * sizeof(struct ql4_chap_table));
 901         ret = qla4xxx_set_flash(ha, chap_dma, offset, chap_size,
 902                                 FLASH_OPT_RMW_COMMIT);
 903         if (ret == QLA_SUCCESS && ha->chap_list) {
 904                 mutex_lock(&ha->chap_sem);
 905                 /* Update ha chap_list cache */
 906                 memcpy((struct ql4_chap_table *)ha->chap_list + chap_tbl_idx,
 907                         chap_table, sizeof(struct ql4_chap_table));
 908                 mutex_unlock(&ha->chap_sem);
 909         }
 910         if (ret != QLA_SUCCESS)
 911                 ret =  -EINVAL;
 912
 913 exit_delete_chap:
 914         dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
 915         return ret;
 916 }
 917
 918 /**
 919  * qla4xxx_set_chap_entry - Make chap entry with given information
 920  * @shost: pointer to host
 921  * @data: chap info - credentials, index and type to make chap entry
 922  * @len: length of data
 923  *
 924  * Add or update chap entry with the given information
 925  **/
 926 static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void *data, int len)
 927 {
 928         struct scsi_qla_host *ha = to_qla_host(shost);
 929         struct iscsi_chap_rec chap_rec;
 930         struct ql4_chap_table *chap_entry = NULL;
 931         struct iscsi_param_info *param_info;
 932         struct nlattr *attr;
 933         int max_chap_entries = 0;
 934         int type;
 935         int rem = len;
 936         int rc = 0;
 937         int size;
 938
 939         memset(&chap_rec, 0, sizeof(chap_rec));
 940
 941         nla_for_each_attr(attr, data, len, rem) {
 942                 param_info = nla_data(attr);
 943
 944                 switch (param_info->param) {
 945                 case ISCSI_CHAP_PARAM_INDEX:
 946                         chap_rec.chap_tbl_idx = *(uint16_t *)param_info->value;
 947                         break;
 948                 case ISCSI_CHAP_PARAM_CHAP_TYPE:
 949                         chap_rec.chap_type = param_info->value[0];
 950                         break;
 951                 case ISCSI_CHAP_PARAM_USERNAME:
 952                         size = min_t(size_t, sizeof(chap_rec.username),
 953                                      param_info->len);
 954                         memcpy(chap_rec.username, param_info->value, size);
 955                         break;
 956                 case ISCSI_CHAP_PARAM_PASSWORD:
 957                         size = min_t(size_t, sizeof(chap_rec.password),
 958                                      param_info->len);
 959                         memcpy(chap_rec.password, param_info->value, size);
 960                         break;
 961                 case ISCSI_CHAP_PARAM_PASSWORD_LEN:
 962                         chap_rec.password_length = param_info->value[0];
 963                         break;
 964                 default:
 965                         ql4_printk(KERN_ERR, ha,
 966                                    "%s: No such sysfs attribute\n", __func__);
 967                         rc = -ENOSYS;
 968                         goto exit_set_chap;
 969                 };
 970         }
 971
 972         if (chap_rec.chap_type == CHAP_TYPE_IN)
 973                 type = BIDI_CHAP;
 974         else
 975                 type = LOCAL_CHAP;
 976
 977         if (is_qla80XX(ha))
 978                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 979                                    sizeof(struct ql4_chap_table);
 980         else
 981                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 982
 983         mutex_lock(&ha->chap_sem);
 984         if (chap_rec.chap_tbl_idx < max_chap_entries) {
 985                 rc = qla4xxx_get_chap_by_index(ha, chap_rec.chap_tbl_idx,
 986                                                &chap_entry);
 987                 if (!rc) {
 988                         if (!(type == qla4xxx_get_chap_type(chap_entry))) {
 989                                 ql4_printk(KERN_INFO, ha,
 990                                            "Type mismatch for CHAP entry %d\n",
 991                                            chap_rec.chap_tbl_idx);
 992                                 rc = -EINVAL;
 993                                 goto exit_unlock_chap;
 994                         }
 995
 996                         /* If chap index is in use then don't modify it */
 997                         rc = qla4xxx_is_chap_active(shost,
 998                                                     chap_rec.chap_tbl_idx);
 999                         if (rc) {
1000                                 ql4_printk(KERN_INFO, ha,
1001                                            "CHAP entry %d is in use\n",
1002                                            chap_rec.chap_tbl_idx);
1003                                 rc = -EBUSY;
1004                                 goto exit_unlock_chap;
1005                         }
1006                 }
1007         } else {
1008                 rc = qla4xxx_find_free_chap_index(ha, &chap_rec.chap_tbl_idx);
1009                 if (rc) {
1010                         ql4_printk(KERN_INFO, ha, "CHAP entry not available\n");
1011                         rc = -EBUSY;
1012                         goto exit_unlock_chap;
1013                 }
1014         }
1015
1016         rc = qla4xxx_set_chap(ha, chap_rec.username, chap_rec.password,
1017                               chap_rec.chap_tbl_idx, type);
1018
1019 exit_unlock_chap:
1020         mutex_unlock(&ha->chap_sem);
1021
1022 exit_set_chap:
1023         return rc;
1024 }
1025
1026
1027 static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len)
1028 {
1029         struct scsi_qla_host *ha = to_qla_host(shost);
1030         struct iscsi_offload_host_stats *host_stats = NULL;
1031         int host_stats_size;
1032         int ret = 0;
1033         int ddb_idx = 0;
1034         struct ql_iscsi_stats *ql_iscsi_stats = NULL;
1035         int stats_size;
1036         dma_addr_t iscsi_stats_dma;
1037
1038         DEBUG2(ql4_printk(KERN_INFO, ha, "Func: %s\n", __func__));
1039
1040         host_stats_size = sizeof(struct iscsi_offload_host_stats);
1041
1042         if (host_stats_size != len) {
1043                 ql4_printk(KERN_INFO, ha, "%s: host_stats size mismatch expected = %d, is = %d\n",
1044                            __func__, len, host_stats_size);
1045                 ret = -EINVAL;
1046                 goto exit_host_stats;
1047         }
1048         host_stats = (struct iscsi_offload_host_stats *)buf;
1049
1050         if (!buf) {
1051                 ret = -ENOMEM;
1052                 goto exit_host_stats;
1053         }
1054
1055         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
1056
1057         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
1058                                             &iscsi_stats_dma, GFP_KERNEL);
1059         if (!ql_iscsi_stats) {
1060                 ql4_printk(KERN_ERR, ha,
1061                            "Unable to allocate memory for iscsi stats\n");
1062                 ret = -ENOMEM;
1063                 goto exit_host_stats;
1064         }
1065
1066         ret =  qla4xxx_get_mgmt_data(ha, ddb_idx, stats_size,
1067                                      iscsi_stats_dma);
1068         if (ret != QLA_SUCCESS) {
1069                 ql4_printk(KERN_ERR, ha,
1070                            "Unable to retrieve iscsi stats\n");
1071                 ret = -EIO;
1072                 goto exit_host_stats;
1073         }
1074         host_stats->mactx_frames = le64_to_cpu(ql_iscsi_stats->mac_tx_frames);
1075         host_stats->mactx_bytes = le64_to_cpu(ql_iscsi_stats->mac_tx_bytes);
1076         host_stats->mactx_multicast_frames =
1077                         le64_to_cpu(ql_iscsi_stats->mac_tx_multicast_frames);
1078         host_stats->mactx_broadcast_frames =
1079                         le64_to_cpu(ql_iscsi_stats->mac_tx_broadcast_frames);
1080         host_stats->mactx_pause_frames =
1081                         le64_to_cpu(ql_iscsi_stats->mac_tx_pause_frames);
1082         host_stats->mactx_control_frames =
1083                         le64_to_cpu(ql_iscsi_stats->mac_tx_control_frames);
1084         host_stats->mactx_deferral =
1085                         le64_to_cpu(ql_iscsi_stats->mac_tx_deferral);
1086         host_stats->mactx_excess_deferral =
1087                         le64_to_cpu(ql_iscsi_stats->mac_tx_excess_deferral);
1088         host_stats->mactx_late_collision =
1089                         le64_to_cpu(ql_iscsi_stats->mac_tx_late_collision);
1090         host_stats->mactx_abort = le64_to_cpu(ql_iscsi_stats->mac_tx_abort);
1091         host_stats->mactx_single_collision =
1092                         le64_to_cpu(ql_iscsi_stats->mac_tx_single_collision);
1093         host_stats->mactx_multiple_collision =
1094                         le64_to_cpu(ql_iscsi_stats->mac_tx_multiple_collision);
1095         host_stats->mactx_collision =
1096                         le64_to_cpu(ql_iscsi_stats->mac_tx_collision);
1097         host_stats->mactx_frames_dropped =
1098                         le64_to_cpu(ql_iscsi_stats->mac_tx_frames_dropped);
1099         host_stats->mactx_jumbo_frames =
1100                         le64_to_cpu(ql_iscsi_stats->mac_tx_jumbo_frames);
1101         host_stats->macrx_frames = le64_to_cpu(ql_iscsi_stats->mac_rx_frames);
1102         host_stats->macrx_bytes = le64_to_cpu(ql_iscsi_stats->mac_rx_bytes);
1103         host_stats->macrx_unknown_control_frames =
1104                 le64_to_cpu(ql_iscsi_stats->mac_rx_unknown_control_frames);
1105         host_stats->macrx_pause_frames =
1106                         le64_to_cpu(ql_iscsi_stats->mac_rx_pause_frames);
1107         host_stats->macrx_control_frames =
1108                         le64_to_cpu(ql_iscsi_stats->mac_rx_control_frames);
1109         host_stats->macrx_dribble =
1110                         le64_to_cpu(ql_iscsi_stats->mac_rx_dribble);
1111         host_stats->macrx_frame_length_error =
1112                         le64_to_cpu(ql_iscsi_stats->mac_rx_frame_length_error);
1113         host_stats->macrx_jabber = le64_to_cpu(ql_iscsi_stats->mac_rx_jabber);
1114         host_stats->macrx_carrier_sense_error =
1115                 le64_to_cpu(ql_iscsi_stats->mac_rx_carrier_sense_error);
1116         host_stats->macrx_frame_discarded =
1117                         le64_to_cpu(ql_iscsi_stats->mac_rx_frame_discarded);
1118         host_stats->macrx_frames_dropped =
1119                         le64_to_cpu(ql_iscsi_stats->mac_rx_frames_dropped);
1120         host_stats->mac_crc_error = le64_to_cpu(ql_iscsi_stats->mac_crc_error);
1121         host_stats->mac_encoding_error =
1122                         le64_to_cpu(ql_iscsi_stats->mac_encoding_error);
1123         host_stats->macrx_length_error_large =
1124                         le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_large);
1125         host_stats->macrx_length_error_small =
1126                         le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_small);
1127         host_stats->macrx_multicast_frames =
1128                         le64_to_cpu(ql_iscsi_stats->mac_rx_multicast_frames);
1129         host_stats->macrx_broadcast_frames =
1130                         le64_to_cpu(ql_iscsi_stats->mac_rx_broadcast_frames);
1131         host_stats->iptx_packets = le64_to_cpu(ql_iscsi_stats->ip_tx_packets);
1132         host_stats->iptx_bytes = le64_to_cpu(ql_iscsi_stats->ip_tx_bytes);
1133         host_stats->iptx_fragments =
1134                         le64_to_cpu(ql_iscsi_stats->ip_tx_fragments);
1135         host_stats->iprx_packets = le64_to_cpu(ql_iscsi_stats->ip_rx_packets);
1136         host_stats->iprx_bytes = le64_to_cpu(ql_iscsi_stats->ip_rx_bytes);
1137         host_stats->iprx_fragments =
1138                         le64_to_cpu(ql_iscsi_stats->ip_rx_fragments);
1139         host_stats->ip_datagram_reassembly =
1140                         le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly);
1141         host_stats->ip_invalid_address_error =
1142                         le64_to_cpu(ql_iscsi_stats->ip_invalid_address_error);
1143         host_stats->ip_error_packets =
1144                         le64_to_cpu(ql_iscsi_stats->ip_error_packets);
1145         host_stats->ip_fragrx_overlap =
1146                         le64_to_cpu(ql_iscsi_stats->ip_fragrx_overlap);
1147         host_stats->ip_fragrx_outoforder =
1148                         le64_to_cpu(ql_iscsi_stats->ip_fragrx_outoforder);
1149         host_stats->ip_datagram_reassembly_timeout =
1150                 le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly_timeout);
1151         host_stats->ipv6tx_packets =
1152                         le64_to_cpu(ql_iscsi_stats->ipv6_tx_packets);
1153         host_stats->ipv6tx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_tx_bytes);
1154         host_stats->ipv6tx_fragments =
1155                         le64_to_cpu(ql_iscsi_stats->ipv6_tx_fragments);
1156         host_stats->ipv6rx_packets =
1157                         le64_to_cpu(ql_iscsi_stats->ipv6_rx_packets);
1158         host_stats->ipv6rx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_rx_bytes);
1159         host_stats->ipv6rx_fragments =
1160                         le64_to_cpu(ql_iscsi_stats->ipv6_rx_fragments);
1161         host_stats->ipv6_datagram_reassembly =
1162                         le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly);
1163         host_stats->ipv6_invalid_address_error =
1164                 le64_to_cpu(ql_iscsi_stats->ipv6_invalid_address_error);
1165         host_stats->ipv6_error_packets =
1166                         le64_to_cpu(ql_iscsi_stats->ipv6_error_packets);
1167         host_stats->ipv6_fragrx_overlap =
1168                         le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_overlap);
1169         host_stats->ipv6_fragrx_outoforder =
1170                         le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_outoforder);
1171         host_stats->ipv6_datagram_reassembly_timeout =
1172                 le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly_timeout);
1173         host_stats->tcptx_segments =
1174                         le64_to_cpu(ql_iscsi_stats->tcp_tx_segments);
1175         host_stats->tcptx_bytes = le64_to_cpu(ql_iscsi_stats->tcp_tx_bytes);
1176         host_stats->tcprx_segments =
1177                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segments);
1178         host_stats->tcprx_byte = le64_to_cpu(ql_iscsi_stats->tcp_rx_byte);
1179         host_stats->tcp_duplicate_ack_retx =
1180                         le64_to_cpu(ql_iscsi_stats->tcp_duplicate_ack_retx);
1181         host_stats->tcp_retx_timer_expired =
1182                         le64_to_cpu(ql_iscsi_stats->tcp_retx_timer_expired);
1183         host_stats->tcprx_duplicate_ack =
1184                         le64_to_cpu(ql_iscsi_stats->tcp_rx_duplicate_ack);
1185         host_stats->tcprx_pure_ackr =
1186                         le64_to_cpu(ql_iscsi_stats->tcp_rx_pure_ackr);
1187         host_stats->tcptx_delayed_ack =
1188                         le64_to_cpu(ql_iscsi_stats->tcp_tx_delayed_ack);
1189         host_stats->tcptx_pure_ack =
1190                         le64_to_cpu(ql_iscsi_stats->tcp_tx_pure_ack);
1191         host_stats->tcprx_segment_error =
1192                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_error);
1193         host_stats->tcprx_segment_outoforder =
1194                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_outoforder);
1195         host_stats->tcprx_window_probe =
1196                         le64_to_cpu(ql_iscsi_stats->tcp_rx_window_probe);
1197         host_stats->tcprx_window_update =
1198                         le64_to_cpu(ql_iscsi_stats->tcp_rx_window_update);
1199         host_stats->tcptx_window_probe_persist =
1200                 le64_to_cpu(ql_iscsi_stats->tcp_tx_window_probe_persist);
1201         host_stats->ecc_error_correction =
1202                         le64_to_cpu(ql_iscsi_stats->ecc_error_correction);
1203         host_stats->iscsi_pdu_tx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_tx);
1204         host_stats->iscsi_data_bytes_tx =
1205                         le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_tx);
1206         host_stats->iscsi_pdu_rx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_rx);
1207         host_stats->iscsi_data_bytes_rx =
1208                         le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_rx);
1209         host_stats->iscsi_io_completed =
1210                         le64_to_cpu(ql_iscsi_stats->iscsi_io_completed);
1211         host_stats->iscsi_unexpected_io_rx =
1212                         le64_to_cpu(ql_iscsi_stats->iscsi_unexpected_io_rx);
1213         host_stats->iscsi_format_error =
1214                         le64_to_cpu(ql_iscsi_stats->iscsi_format_error);
1215         host_stats->iscsi_hdr_digest_error =
1216                         le64_to_cpu(ql_iscsi_stats->iscsi_hdr_digest_error);
1217         host_stats->iscsi_data_digest_error =
1218                         le64_to_cpu(ql_iscsi_stats->iscsi_data_digest_error);
1219         host_stats->iscsi_sequence_error =
1220                         le64_to_cpu(ql_iscsi_stats->iscsi_sequence_error);
1221 exit_host_stats:
1222         if (ql_iscsi_stats)
1223                 dma_free_coherent(&ha->pdev->dev, host_stats_size,
1224                                   ql_iscsi_stats, iscsi_stats_dma);
1225
1226         ql4_printk(KERN_INFO, ha, "%s: Get host stats done\n",
1227                    __func__);
1228         return ret;
1229 }
1230
1231 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
1232                                    enum iscsi_param_type param_type,
1233                                    int param, char *buf)
1234 {
1235         struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
1236         struct scsi_qla_host *ha = to_qla_host(shost);
1237         int ival;
1238         char *pval = NULL;
1239         int len = -ENOSYS;
1240
1241         if (param_type == ISCSI_NET_PARAM) {
1242                 switch (param) {
1243                 case ISCSI_NET_PARAM_IPV4_ADDR:
1244                         len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1245                         break;
1246                 case ISCSI_NET_PARAM_IPV4_SUBNET:
1247                         len = sprintf(buf, "%pI4\n",
1248                                       &ha->ip_config.subnet_mask);
1249                         break;
1250                 case ISCSI_NET_PARAM_IPV4_GW:
1251                         len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
1252                         break;
1253                 case ISCSI_NET_PARAM_IFACE_ENABLE:
1254                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1255                                 OP_STATE(ha->ip_config.ipv4_options,
1256                                          IPOPT_IPV4_PROTOCOL_ENABLE, pval);
1257                         } else {
1258                                 OP_STATE(ha->ip_config.ipv6_options,
1259                                          IPV6_OPT_IPV6_PROTOCOL_ENABLE, pval);
1260                         }
1261
1262                         len = sprintf(buf, "%s\n", pval);
1263                         break;
1264                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1265                         len = sprintf(buf, "%s\n",
1266                                       (ha->ip_config.tcp_options &
1267                                        TCPOPT_DHCP_ENABLE) ?
1268                                       "dhcp" : "static");
1269                         break;
1270                 case ISCSI_NET_PARAM_IPV6_ADDR:
1271                         if (iface->iface_num == 0)
1272                                 len = sprintf(buf, "%pI6\n",
1273                                               &ha->ip_config.ipv6_addr0);
1274                         if (iface->iface_num == 1)
1275                                 len = sprintf(buf, "%pI6\n",
1276                                               &ha->ip_config.ipv6_addr1);
1277                         break;
1278                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
1279                         len = sprintf(buf, "%pI6\n",
1280                                       &ha->ip_config.ipv6_link_local_addr);
1281                         break;
1282                 case ISCSI_NET_PARAM_IPV6_ROUTER:
1283                         len = sprintf(buf, "%pI6\n",
1284                                       &ha->ip_config.ipv6_default_router_addr);
1285                         break;
1286                 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
1287                         pval = (ha->ip_config.ipv6_addl_options &
1288                                 IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
1289                                 "nd" : "static";
1290
1291                         len = sprintf(buf, "%s\n", pval);
1292                         break;
1293                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
1294                         pval = (ha->ip_config.ipv6_addl_options &
1295                                 IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
1296                                 "auto" : "static";
1297
1298                         len = sprintf(buf, "%s\n", pval);
1299                         break;
1300                 case ISCSI_NET_PARAM_VLAN_ID:
1301                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1302                                 ival = ha->ip_config.ipv4_vlan_tag &
1303                                        ISCSI_MAX_VLAN_ID;
1304                         else
1305                                 ival = ha->ip_config.ipv6_vlan_tag &
1306                                        ISCSI_MAX_VLAN_ID;
1307
1308                         len = sprintf(buf, "%d\n", ival);
1309                         break;
1310                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
1311                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1312                                 ival = (ha->ip_config.ipv4_vlan_tag >> 13) &
1313                                        ISCSI_MAX_VLAN_PRIORITY;
1314                         else
1315                                 ival = (ha->ip_config.ipv6_vlan_tag >> 13) &
1316                                        ISCSI_MAX_VLAN_PRIORITY;
1317
1318                         len = sprintf(buf, "%d\n", ival);
1319                         break;
1320                 case ISCSI_NET_PARAM_VLAN_ENABLED:
1321                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1322                                 OP_STATE(ha->ip_config.ipv4_options,
1323                                          IPOPT_VLAN_TAGGING_ENABLE, pval);
1324                         } else {
1325                                 OP_STATE(ha->ip_config.ipv6_options,
1326                                          IPV6_OPT_VLAN_TAGGING_ENABLE, pval);
1327                         }
1328                         len = sprintf(buf, "%s\n", pval);
1329                         break;
1330                 case ISCSI_NET_PARAM_MTU:
1331                         len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
1332                         break;
1333                 case ISCSI_NET_PARAM_PORT:
1334                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1335                                 len = sprintf(buf, "%d\n",
1336                                               ha->ip_config.ipv4_port);
1337                         else
1338                                 len = sprintf(buf, "%d\n",
1339                                               ha->ip_config.ipv6_port);
1340                         break;
1341                 case ISCSI_NET_PARAM_IPADDR_STATE:
1342                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1343                                 pval = iscsi_get_ipaddress_state_name(
1344                                                 ha->ip_config.ipv4_addr_state);
1345                         } else {
1346                                 if (iface->iface_num == 0)
1347                                         pval = iscsi_get_ipaddress_state_name(
1348                                                 ha->ip_config.ipv6_addr0_state);
1349                                 else if (iface->iface_num == 1)
1350                                         pval = iscsi_get_ipaddress_state_name(
1351                                                 ha->ip_config.ipv6_addr1_state);
1352                         }
1353
1354                         len = sprintf(buf, "%s\n", pval);
1355                         break;
1356                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE:
1357                         pval = iscsi_get_ipaddress_state_name(
1358                                         ha->ip_config.ipv6_link_local_state);
1359                         len = sprintf(buf, "%s\n", pval);
1360                         break;
1361                 case ISCSI_NET_PARAM_IPV6_ROUTER_STATE:
1362                         pval = iscsi_get_router_state_name(
1363                                       ha->ip_config.ipv6_default_router_state);
1364                         len = sprintf(buf, "%s\n", pval);
1365                         break;
1366                 case ISCSI_NET_PARAM_DELAYED_ACK_EN:
1367                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1368                                 OP_STATE(~ha->ip_config.tcp_options,
1369                                          TCPOPT_DELAYED_ACK_DISABLE, pval);
1370                         } else {
1371                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1372                                          IPV6_TCPOPT_DELAYED_ACK_DISABLE, pval);
1373                         }
1374                         len = sprintf(buf, "%s\n", pval);
1375                         break;
1376                 case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
1377                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1378                                 OP_STATE(~ha->ip_config.tcp_options,
1379                                          TCPOPT_NAGLE_ALGO_DISABLE, pval);
1380                         } else {
1381                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1382                                          IPV6_TCPOPT_NAGLE_ALGO_DISABLE, pval);
1383                         }
1384                         len = sprintf(buf, "%s\n", pval);
1385                         break;
1386                 case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
1387                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1388                                 OP_STATE(~ha->ip_config.tcp_options,
1389                                          TCPOPT_WINDOW_SCALE_DISABLE, pval);
1390                         } else {
1391                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1392                                          IPV6_TCPOPT_WINDOW_SCALE_DISABLE,
1393                                          pval);
1394                         }
1395                         len = sprintf(buf, "%s\n", pval);
1396                         break;
1397                 case ISCSI_NET_PARAM_TCP_WSF:
1398                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1399                                 len = sprintf(buf, "%d\n",
1400                                               ha->ip_config.tcp_wsf);
1401                         else
1402                                 len = sprintf(buf, "%d\n",
1403                                               ha->ip_config.ipv6_tcp_wsf);
1404                         break;
1405                 case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
1406                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1407                                 ival = (ha->ip_config.tcp_options &
1408                                         TCPOPT_TIMER_SCALE) >> 1;
1409                         else
1410                                 ival = (ha->ip_config.ipv6_tcp_options &
1411                                         IPV6_TCPOPT_TIMER_SCALE) >> 1;
1412
1413                         len = sprintf(buf, "%d\n", ival);
1414                         break;
1415                 case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
1416                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1417                                 OP_STATE(ha->ip_config.tcp_options,
1418                                          TCPOPT_TIMESTAMP_ENABLE, pval);
1419                         } else {
1420                                 OP_STATE(ha->ip_config.ipv6_tcp_options,
1421                                          IPV6_TCPOPT_TIMESTAMP_EN, pval);
1422                         }
1423                         len = sprintf(buf, "%s\n", pval);
1424                         break;
1425                 case ISCSI_NET_PARAM_CACHE_ID:
1426                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1427                                 len = sprintf(buf, "%d\n",
1428                                               ha->ip_config.ipv4_cache_id);
1429                         else
1430                                 len = sprintf(buf, "%d\n",
1431                                               ha->ip_config.ipv6_cache_id);
1432                         break;
1433                 case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
1434                         OP_STATE(ha->ip_config.tcp_options,
1435                                  TCPOPT_DNS_SERVER_IP_EN, pval);
1436
1437                         len = sprintf(buf, "%s\n", pval);
1438                         break;
1439                 case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
1440                         OP_STATE(ha->ip_config.tcp_options,
1441                                  TCPOPT_SLP_DA_INFO_EN, pval);
1442
1443                         len = sprintf(buf, "%s\n", pval);
1444                         break;
1445                 case ISCSI_NET_PARAM_IPV4_TOS_EN:
1446                         OP_STATE(ha->ip_config.ipv4_options,
1447                                  IPOPT_IPV4_TOS_EN, pval);
1448
1449                         len = sprintf(buf, "%s\n", pval);
1450                         break;
1451                 case ISCSI_NET_PARAM_IPV4_TOS:
1452                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_tos);
1453                         break;
1454                 case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
1455                         OP_STATE(ha->ip_config.ipv4_options,
1456                                  IPOPT_GRAT_ARP_EN, pval);
1457
1458                         len = sprintf(buf, "%s\n", pval);
1459                         break;
1460                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
1461                         OP_STATE(ha->ip_config.ipv4_options, IPOPT_ALT_CID_EN,
1462                                  pval);
1463
1464                         len = sprintf(buf, "%s\n", pval);
1465                         break;
1466                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
1467                         pval = (ha->ip_config.ipv4_alt_cid_len) ?
1468                                (char *)ha->ip_config.ipv4_alt_cid : "";
1469
1470                         len = sprintf(buf, "%s\n", pval);
1471                         break;
1472                 case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
1473                         OP_STATE(ha->ip_config.ipv4_options,
1474                                  IPOPT_REQ_VID_EN, pval);
1475
1476                         len = sprintf(buf, "%s\n", pval);
1477                         break;
1478                 case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
1479                         OP_STATE(ha->ip_config.ipv4_options,
1480                                  IPOPT_USE_VID_EN, pval);
1481
1482                         len = sprintf(buf, "%s\n", pval);
1483                         break;
1484                 case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
1485                         pval = (ha->ip_config.ipv4_vid_len) ?
1486                                (char *)ha->ip_config.ipv4_vid : "";
1487
1488                         len = sprintf(buf, "%s\n", pval);
1489                         break;
1490                 case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
1491                         OP_STATE(ha->ip_config.ipv4_options,
1492                                  IPOPT_LEARN_IQN_EN, pval);
1493
1494                         len = sprintf(buf, "%s\n", pval);
1495                         break;
1496                 case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
1497                         OP_STATE(~ha->ip_config.ipv4_options,
1498                                  IPOPT_FRAGMENTATION_DISABLE, pval);
1499
1500                         len = sprintf(buf, "%s\n", pval);
1501                         break;
1502                 case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
1503                         OP_STATE(ha->ip_config.ipv4_options,
1504                                  IPOPT_IN_FORWARD_EN, pval);
1505
1506                         len = sprintf(buf, "%s\n", pval);
1507                         break;
1508                 case ISCSI_NET_PARAM_REDIRECT_EN:
1509                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1510                                 OP_STATE(ha->ip_config.ipv4_options,
1511                                          IPOPT_ARP_REDIRECT_EN, pval);
1512                         } else {
1513                                 OP_STATE(ha->ip_config.ipv6_options,
1514                                          IPV6_OPT_REDIRECT_EN, pval);
1515                         }
1516                         len = sprintf(buf, "%s\n", pval);
1517                         break;
1518                 case ISCSI_NET_PARAM_IPV4_TTL:
1519                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_ttl);
1520                         break;
1521                 case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
1522                         OP_STATE(ha->ip_config.ipv6_options,
1523                                  IPV6_OPT_GRAT_NEIGHBOR_ADV_EN, pval);
1524
1525                         len = sprintf(buf, "%s\n", pval);
1526                         break;
1527                 case ISCSI_NET_PARAM_IPV6_MLD_EN:
1528                         OP_STATE(ha->ip_config.ipv6_addl_options,
1529                                  IPV6_ADDOPT_MLD_EN, pval);
1530
1531                         len = sprintf(buf, "%s\n", pval);
1532                         break;
1533                 case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
1534                         len = sprintf(buf, "%u\n", ha->ip_config.ipv6_flow_lbl);
1535                         break;
1536                 case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
1537                         len = sprintf(buf, "%d\n",
1538                                       ha->ip_config.ipv6_traffic_class);
1539                         break;
1540                 case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
1541                         len = sprintf(buf, "%d\n",
1542                                       ha->ip_config.ipv6_hop_limit);
1543                         break;
1544                 case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
1545                         len = sprintf(buf, "%d\n",
1546                                       ha->ip_config.ipv6_nd_reach_time);
1547                         break;
1548                 case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
1549                         len = sprintf(buf, "%d\n",
1550                                       ha->ip_config.ipv6_nd_rexmit_timer);
1551                         break;
1552                 case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
1553                         len = sprintf(buf, "%d\n",
1554                                       ha->ip_config.ipv6_nd_stale_timeout);
1555                         break;
1556                 case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
1557                         len = sprintf(buf, "%d\n",
1558                                       ha->ip_config.ipv6_dup_addr_detect_count);
1559                         break;
1560                 case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
1561                         len = sprintf(buf, "%d\n",
1562                                       ha->ip_config.ipv6_gw_advrt_mtu);
1563                         break;
1564                 default:
1565                         len = -ENOSYS;
1566                 }
1567         } else if (param_type == ISCSI_IFACE_PARAM) {
1568                 switch (param) {
1569                 case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
1570                         len = sprintf(buf, "%d\n", ha->ip_config.def_timeout);
1571                         break;
1572                 case ISCSI_IFACE_PARAM_HDRDGST_EN:
1573                         OP_STATE(ha->ip_config.iscsi_options,
1574                                  ISCSIOPTS_HEADER_DIGEST_EN, pval);
1575
1576                         len = sprintf(buf, "%s\n", pval);
1577                         break;
1578                 case ISCSI_IFACE_PARAM_DATADGST_EN:
1579                         OP_STATE(ha->ip_config.iscsi_options,
1580                                  ISCSIOPTS_DATA_DIGEST_EN, pval);
1581
1582                         len = sprintf(buf, "%s\n", pval);
1583                         break;
1584                 case ISCSI_IFACE_PARAM_IMM_DATA_EN:
1585                         OP_STATE(ha->ip_config.iscsi_options,
1586                                  ISCSIOPTS_IMMEDIATE_DATA_EN, pval);
1587
1588                         len = sprintf(buf, "%s\n", pval);
1589                         break;
1590                 case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
1591                         OP_STATE(ha->ip_config.iscsi_options,
1592                                  ISCSIOPTS_INITIAL_R2T_EN, pval);
1593
1594                         len = sprintf(buf, "%s\n", pval);
1595                         break;
1596                 case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
1597                         OP_STATE(ha->ip_config.iscsi_options,
1598                                  ISCSIOPTS_DATA_SEQ_INORDER_EN, pval);
1599
1600                         len = sprintf(buf, "%s\n", pval);
1601                         break;
1602                 case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
1603                         OP_STATE(ha->ip_config.iscsi_options,
1604                                  ISCSIOPTS_DATA_PDU_INORDER_EN, pval);
1605
1606                         len = sprintf(buf, "%s\n", pval);
1607                         break;
1608                 case ISCSI_IFACE_PARAM_ERL:
1609                         len = sprintf(buf, "%d\n",
1610                                       (ha->ip_config.iscsi_options &
1611                                        ISCSIOPTS_ERL));
1612                         break;
1613                 case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
1614                         len = sprintf(buf, "%u\n",
1615                                       ha->ip_config.iscsi_max_pdu_size *
1616                                       BYTE_UNITS);
1617                         break;
1618                 case ISCSI_IFACE_PARAM_FIRST_BURST:
1619                         len = sprintf(buf, "%u\n",
1620                                       ha->ip_config.iscsi_first_burst_len *
1621                                       BYTE_UNITS);
1622                         break;
1623                 case ISCSI_IFACE_PARAM_MAX_R2T:
1624                         len = sprintf(buf, "%d\n",
1625                                       ha->ip_config.iscsi_max_outstnd_r2t);
1626                         break;
1627                 case ISCSI_IFACE_PARAM_MAX_BURST:
1628                         len = sprintf(buf, "%u\n",
1629                                       ha->ip_config.iscsi_max_burst_len *
1630                                       BYTE_UNITS);
1631                         break;
1632                 case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
1633                         OP_STATE(ha->ip_config.iscsi_options,
1634                                  ISCSIOPTS_CHAP_AUTH_EN, pval);
1635
1636                         len = sprintf(buf, "%s\n", pval);
1637                         break;
1638                 case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
1639                         OP_STATE(ha->ip_config.iscsi_options,
1640                                  ISCSIOPTS_BIDI_CHAP_EN, pval);
1641
1642                         len = sprintf(buf, "%s\n", pval);
1643                         break;
1644                 case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
1645                         OP_STATE(ha->ip_config.iscsi_options,
1646                                  ISCSIOPTS_DISCOVERY_AUTH_EN, pval);
1647
1648                         len = sprintf(buf, "%s\n", pval);
1649                         break;
1650                 case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
1651                         OP_STATE(ha->ip_config.iscsi_options,
1652                                  ISCSIOPTS_DISCOVERY_LOGOUT_EN, pval);
1653
1654                         len = sprintf(buf, "%s\n", pval);
1655                         break;
1656                 case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
1657                         OP_STATE(ha->ip_config.iscsi_options,
1658                                  ISCSIOPTS_STRICT_LOGIN_COMP_EN, pval);
1659
1660                         len = sprintf(buf, "%s\n", pval);
1661                         break;
1662                 case ISCSI_IFACE_PARAM_INITIATOR_NAME:
1663                         len = sprintf(buf, "%s\n", ha->ip_config.iscsi_name);
1664                         break;
1665                 default:
1666                         len = -ENOSYS;
1667                 }
1668         }
1669
1670         return len;
1671 }
1672
1673 static struct iscsi_endpoint *
1674 qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
1675                    int non_blocking)
1676 {
1677         int ret;
1678         struct iscsi_endpoint *ep;
1679         struct qla_endpoint *qla_ep;
1680         struct scsi_qla_host *ha;
1681         struct sockaddr_in *addr;
1682         struct sockaddr_in6 *addr6;
1683
1684         if (!shost) {
1685                 ret = -ENXIO;
1686                 pr_err("%s: shost is NULL\n", __func__);
1687                 return ERR_PTR(ret);
1688         }
1689
1690         ha = iscsi_host_priv(shost);
1691         ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
1692         if (!ep) {
1693                 ret = -ENOMEM;
1694                 return ERR_PTR(ret);
1695         }
1696
1697         qla_ep = ep->dd_data;
1698         memset(qla_ep, 0, sizeof(struct qla_endpoint));
1699         if (dst_addr->sa_family == AF_INET) {
1700                 memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
1701                 addr = (struct sockaddr_in *)&qla_ep->dst_addr;
1702                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
1703                                   (char *)&addr->sin_addr));
1704         } else if (dst_addr->sa_family == AF_INET6) {
1705                 memcpy(&qla_ep->dst_addr, dst_addr,
1706                        sizeof(struct sockaddr_in6));
1707                 addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
1708                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
1709                                   (char *)&addr6->sin6_addr));
1710         } else {
1711                 ql4_printk(KERN_WARNING, ha, "%s: Invalid endpoint\n",
1712                            __func__);
1713         }
1714
1715         qla_ep->host = shost;
1716
1717         return ep;
1718 }
1719
1720 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1721 {
1722         struct qla_endpoint *qla_ep;
1723         struct scsi_qla_host *ha;
1724         int ret = 0;
1725
1726         qla_ep = ep->dd_data;
1727         ha = to_qla_host(qla_ep->host);
1728         DEBUG2(pr_info_ratelimited("%s: host: %ld\n", __func__, ha->host_no));
1729
1730         if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
1731                 ret = 1;
1732
1733         return ret;
1734 }
1735
1736 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
1737 {
1738         struct qla_endpoint *qla_ep;
1739         struct scsi_qla_host *ha;
1740
1741         qla_ep = ep->dd_data;
1742         ha = to_qla_host(qla_ep->host);
1743         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1744                           ha->host_no));
1745         iscsi_destroy_endpoint(ep);
1746 }
1747
1748 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
1749                                 enum iscsi_param param,
1750                                 char *buf)
1751 {
1752         struct qla_endpoint *qla_ep = ep->dd_data;
1753         struct sockaddr *dst_addr;
1754         struct scsi_qla_host *ha;
1755
1756         if (!qla_ep)
1757                 return -ENOTCONN;
1758
1759         ha = to_qla_host(qla_ep->host);
1760         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1761                           ha->host_no));
1762
1763         switch (param) {
1764         case ISCSI_PARAM_CONN_PORT:
1765         case ISCSI_PARAM_CONN_ADDRESS:
1766                 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
1767                 if (!dst_addr)
1768                         return -ENOTCONN;
1769
1770                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
1771                                                  &qla_ep->dst_addr, param, buf);
1772         default:
1773                 return -ENOSYS;
1774         }
1775 }
1776
1777 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
1778                                    struct iscsi_stats *stats)
1779 {
1780         struct iscsi_session *sess;
1781         struct iscsi_cls_session *cls_sess;
1782         struct ddb_entry *ddb_entry;
1783         struct scsi_qla_host *ha;
1784         struct ql_iscsi_stats *ql_iscsi_stats;
1785         int stats_size;
1786         int ret;
1787         dma_addr_t iscsi_stats_dma;
1788
1789         cls_sess = iscsi_conn_to_session(cls_conn);
1790         sess = cls_sess->dd_data;
1791         ddb_entry = sess->dd_data;
1792         ha = ddb_entry->ha;
1793
1794         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1795                           ha->host_no));
1796         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
1797         /* Allocate memory */
1798         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
1799                                             &iscsi_stats_dma, GFP_KERNEL);
1800         if (!ql_iscsi_stats) {
1801                 ql4_printk(KERN_ERR, ha,
1802                            "Unable to allocate memory for iscsi stats\n");
1803                 goto exit_get_stats;
1804         }
1805
1806         ret =  qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
1807                                      iscsi_stats_dma);
1808         if (ret != QLA_SUCCESS) {
1809                 ql4_printk(KERN_ERR, ha,
1810                            "Unable to retrieve iscsi stats\n");
1811                 goto free_stats;
1812         }
1813
1814         /* octets */
1815         stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
1816         stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
1817         /* xmit pdus */
1818         stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
1819         stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
1820         stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
1821         stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
1822         stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
1823         stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
1824         stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
1825         stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
1826         /* recv pdus */
1827         stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
1828         stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
1829         stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
1830         stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
1831         stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
1832         stats->logoutrsp_pdus =
1833                         le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
1834         stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
1835         stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
1836         stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
1837
1838 free_stats:
1839         dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
1840                           iscsi_stats_dma);
1841 exit_get_stats:
1842         return;
1843 }
1844
1845 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
1846 {
1847         struct iscsi_cls_session *session;
1848         struct iscsi_session *sess;
1849         unsigned long flags;
1850         enum blk_eh_timer_return ret = BLK_EH_DONE;
1851
1852         session = starget_to_session(scsi_target(sc->device));
1853         sess = session->dd_data;
1854
1855         spin_lock_irqsave(&session->lock, flags);
1856         if (session->state == ISCSI_SESSION_FAILED)
1857                 ret = BLK_EH_RESET_TIMER;
1858         spin_unlock_irqrestore(&session->lock, flags);
1859
1860         return ret;
1861 }
1862
1863 static void qla4xxx_set_port_speed(struct Scsi_Host *shost)
1864 {
1865         struct scsi_qla_host *ha = to_qla_host(shost);
1866         struct iscsi_cls_host *ihost = shost->shost_data;
1867         uint32_t speed = ISCSI_PORT_SPEED_UNKNOWN;
1868
1869         qla4xxx_get_firmware_state(ha);
1870
1871         switch (ha->addl_fw_state & 0x0F00) {
1872         case FW_ADDSTATE_LINK_SPEED_10MBPS:
1873                 speed = ISCSI_PORT_SPEED_10MBPS;
1874                 break;
1875         case FW_ADDSTATE_LINK_SPEED_100MBPS:
1876                 speed = ISCSI_PORT_SPEED_100MBPS;
1877                 break;
1878         case FW_ADDSTATE_LINK_SPEED_1GBPS:
1879                 speed = ISCSI_PORT_SPEED_1GBPS;
1880                 break;
1881         case FW_ADDSTATE_LINK_SPEED_10GBPS:
1882                 speed = ISCSI_PORT_SPEED_10GBPS;
1883                 break;
1884         }
1885         ihost->port_speed = speed;
1886 }
1887
1888 static void qla4xxx_set_port_state(struct Scsi_Host *shost)
1889 {
1890         struct scsi_qla_host *ha = to_qla_host(shost);
1891         struct iscsi_cls_host *ihost = shost->shost_data;
1892         uint32_t state = ISCSI_PORT_STATE_DOWN;
1893
1894         if (test_bit(AF_LINK_UP, &ha->flags))
1895                 state = ISCSI_PORT_STATE_UP;
1896
1897         ihost->port_state = state;
1898 }
1899
1900 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
1901                                   enum iscsi_host_param param, char *buf)
1902 {
1903         struct scsi_qla_host *ha = to_qla_host(shost);
1904         int len;
1905
1906         switch (param) {
1907         case ISCSI_HOST_PARAM_HWADDRESS:
1908                 len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
1909                 break;
1910         case ISCSI_HOST_PARAM_IPADDRESS:
1911                 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1912                 break;
1913         case ISCSI_HOST_PARAM_INITIATOR_NAME:
1914                 len = sprintf(buf, "%s\n", ha->name_string);
1915                 break;
1916         case ISCSI_HOST_PARAM_PORT_STATE:
1917                 qla4xxx_set_port_state(shost);
1918                 len = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
1919                 break;
1920         case ISCSI_HOST_PARAM_PORT_SPEED:
1921                 qla4xxx_set_port_speed(shost);
1922                 len = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
1923                 break;
1924         default:
1925                 return -ENOSYS;
1926         }
1927
1928         return len;
1929 }
1930
1931 static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
1932 {
1933         if (ha->iface_ipv4)
1934                 return;
1935
1936         /* IPv4 */
1937         ha->iface_ipv4 = iscsi_create_iface(ha->host,
1938                                             &qla4xxx_iscsi_transport,
1939                                             ISCSI_IFACE_TYPE_IPV4, 0, 0);
1940         if (!ha->iface_ipv4)
1941                 ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
1942                            "iface0.\n");
1943 }
1944
1945 static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
1946 {
1947         if (!ha->iface_ipv6_0)
1948                 /* IPv6 iface-0 */
1949                 ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
1950                                                       &qla4xxx_iscsi_transport,
1951                                                       ISCSI_IFACE_TYPE_IPV6, 0,
1952                                                       0);
1953         if (!ha->iface_ipv6_0)
1954                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1955                            "iface0.\n");
1956
1957         if (!ha->iface_ipv6_1)
1958                 /* IPv6 iface-1 */
1959                 ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
1960                                                       &qla4xxx_iscsi_transport,
1961                                                       ISCSI_IFACE_TYPE_IPV6, 1,
1962                                                       0);
1963         if (!ha->iface_ipv6_1)
1964                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1965                            "iface1.\n");
1966 }
1967
1968 static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
1969 {
1970         if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
1971                 qla4xxx_create_ipv4_iface(ha);
1972
1973         if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
1974                 qla4xxx_create_ipv6_iface(ha);
1975 }
1976
1977 static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
1978 {
1979         if (ha->iface_ipv4) {
1980                 iscsi_destroy_iface(ha->iface_ipv4);
1981                 ha->iface_ipv4 = NULL;
1982         }
1983 }
1984
1985 static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
1986 {
1987         if (ha->iface_ipv6_0) {
1988                 iscsi_destroy_iface(ha->iface_ipv6_0);
1989                 ha->iface_ipv6_0 = NULL;
1990         }
1991         if (ha->iface_ipv6_1) {
1992                 iscsi_destroy_iface(ha->iface_ipv6_1);
1993                 ha->iface_ipv6_1 = NULL;
1994         }
1995 }
1996
1997 static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
1998 {
1999         qla4xxx_destroy_ipv4_iface(ha);
2000         qla4xxx_destroy_ipv6_iface(ha);
2001 }
2002
2003 static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
2004                              struct iscsi_iface_param_info *iface_param,
2005                              struct addr_ctrl_blk *init_fw_cb)
2006 {
2007         /*
2008          * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
2009          * iface_num 1 is valid only for IPv6 Addr.
2010          */
2011         switch (iface_param->param) {
2012         case ISCSI_NET_PARAM_IPV6_ADDR:
2013                 if (iface_param->iface_num & 0x1)
2014                         /* IPv6 Addr 1 */
2015                         memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
2016                                sizeof(init_fw_cb->ipv6_addr1));
2017                 else
2018                         /* IPv6 Addr 0 */
2019                         memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
2020                                sizeof(init_fw_cb->ipv6_addr0));
2021                 break;
2022         case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
2023                 if (iface_param->iface_num & 0x1)
2024                         break;
2025                 memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
2026                        sizeof(init_fw_cb->ipv6_if_id));
2027                 break;
2028         case ISCSI_NET_PARAM_IPV6_ROUTER:
2029                 if (iface_param->iface_num & 0x1)
2030                         break;
2031                 memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
2032                        sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
2033                 break;
2034         case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
2035                 /* Autocfg applies to even interface */
2036                 if (iface_param->iface_num & 0x1)
2037                         break;
2038
2039                 if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
2040                         init_fw_cb->ipv6_addtl_opts &=
2041                                 cpu_to_le16(
2042                                   ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
2043                 else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
2044                         init_fw_cb->ipv6_addtl_opts |=
2045                                 cpu_to_le16(
2046                                   IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
2047                 else
2048                         ql4_printk(KERN_ERR, ha,
2049                                    "Invalid autocfg setting for IPv6 addr\n");
2050                 break;
2051         case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
2052                 /* Autocfg applies to even interface */
2053                 if (iface_param->iface_num & 0x1)
2054                         break;
2055
2056                 if (iface_param->value[0] ==
2057                     ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
2058                         init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
2059                                         IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
2060                 else if (iface_param->value[0] ==
2061                          ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
2062                         init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
2063                                        ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
2064                 else
2065                         ql4_printk(KERN_ERR, ha,
2066                                    "Invalid autocfg setting for IPv6 linklocal addr\n");
2067                 break;
2068         case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
2069                 /* Autocfg applies to even interface */
2070                 if (iface_param->iface_num & 0x1)
2071                         break;
2072
2073                 if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
2074                         memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
2075                                sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
2076                 break;
2077         case ISCSI_NET_PARAM_IFACE_ENABLE:
2078                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
2079                         init_fw_cb->ipv6_opts |=
2080                                 cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
2081                         qla4xxx_create_ipv6_iface(ha);
2082                 } else {
2083                         init_fw_cb->ipv6_opts &=
2084                                 cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
2085                                             0xFFFF);
2086                         qla4xxx_destroy_ipv6_iface(ha);
2087                 }
2088                 break;
2089         case ISCSI_NET_PARAM_VLAN_TAG:
2090                 if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
2091                         break;
2092                 init_fw_cb->ipv6_vlan_tag =
2093                                 cpu_to_be16(*(uint16_t *)iface_param->value);
2094                 break;
2095         case ISCSI_NET_PARAM_VLAN_ENABLED:
2096                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
2097                         init_fw_cb->ipv6_opts |=
2098                                 cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
2099                 else
2100                         init_fw_cb->ipv6_opts &=
2101                                 cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
2102                 break;
2103         case ISCSI_NET_PARAM_MTU:
2104                 init_fw_cb->eth_mtu_size =
2105                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2106                 break;
2107         case ISCSI_NET_PARAM_PORT:
2108                 /* Autocfg applies to even interface */
2109                 if (iface_param->iface_num & 0x1)
2110                         break;
2111
2112                 init_fw_cb->ipv6_port =
2113                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2114                 break;
2115         case ISCSI_NET_PARAM_DELAYED_ACK_EN:
2116                 if (iface_param->iface_num & 0x1)
2117                         break;
2118                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2119                         init_fw_cb->ipv6_tcp_opts |=
2120                                 cpu_to_le16(IPV6_TCPOPT_DELAYED_ACK_DISABLE);
2121                 else
2122                         init_fw_cb->ipv6_tcp_opts &=
2123                                 cpu_to_le16(~IPV6_TCPOPT_DELAYED_ACK_DISABLE &
2124                                             0xFFFF);
2125                 break;
2126         case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
2127                 if (iface_param->iface_num & 0x1)
2128                         break;
2129                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2130                         init_fw_cb->ipv6_tcp_opts |=
2131                                 cpu_to_le16(IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
2132                 else
2133                         init_fw_cb->ipv6_tcp_opts &=
2134                                 cpu_to_le16(~IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
2135                 break;
2136         case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
2137                 if (iface_param->iface_num & 0x1)
2138                         break;
2139                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2140                         init_fw_cb->ipv6_tcp_opts |=
2141                                 cpu_to_le16(IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
2142                 else
2143                         init_fw_cb->ipv6_tcp_opts &=
2144                                 cpu_to_le16(~IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
2145                 break;
2146         case ISCSI_NET_PARAM_TCP_WSF:
2147                 if (iface_param->iface_num & 0x1)
2148                         break;
2149                 init_fw_cb->ipv6_tcp_wsf = iface_param->value[0];
2150                 break;
2151         case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
2152                 if (iface_param->iface_num & 0x1)
2153                         break;
2154                 init_fw_cb->ipv6_tcp_opts &=
2155                                         cpu_to_le16(~IPV6_TCPOPT_TIMER_SCALE);
2156                 init_fw_cb->ipv6_tcp_opts |=
2157                                 cpu_to_le16((iface_param->value[0] << 1) &
2158                                             IPV6_TCPOPT_TIMER_SCALE);
2159                 break;
2160         case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
2161                 if (iface_param->iface_num & 0x1)
2162                         break;
2163                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2164                         init_fw_cb->ipv6_tcp_opts |=
2165                                 cpu_to_le16(IPV6_TCPOPT_TIMESTAMP_EN);
2166                 else
2167                         init_fw_cb->ipv6_tcp_opts &=
2168                                 cpu_to_le16(~IPV6_TCPOPT_TIMESTAMP_EN);
2169                 break;
2170         case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
2171                 if (iface_param->iface_num & 0x1)
2172                         break;
2173                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2174                         init_fw_cb->ipv6_opts |=
2175                                 cpu_to_le16(IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
2176                 else
2177                         init_fw_cb->ipv6_opts &=
2178                                 cpu_to_le16(~IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
2179                 break;
2180         case ISCSI_NET_PARAM_REDIRECT_EN:
2181                 if (iface_param->iface_num & 0x1)
2182                         break;
2183                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2184                         init_fw_cb->ipv6_opts |=
2185                                 cpu_to_le16(IPV6_OPT_REDIRECT_EN);
2186                 else
2187                         init_fw_cb->ipv6_opts &=
2188                                 cpu_to_le16(~IPV6_OPT_REDIRECT_EN);
2189                 break;
2190         case ISCSI_NET_PARAM_IPV6_MLD_EN:
2191                 if (iface_param->iface_num & 0x1)
2192                         break;
2193                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2194                         init_fw_cb->ipv6_addtl_opts |=
2195                                 cpu_to_le16(IPV6_ADDOPT_MLD_EN);
2196                 else
2197                         init_fw_cb->ipv6_addtl_opts &=
2198                                 cpu_to_le16(~IPV6_ADDOPT_MLD_EN);
2199                 break;
2200         case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
2201                 if (iface_param->iface_num & 0x1)
2202                         break;
2203                 init_fw_cb->ipv6_flow_lbl =
2204                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2205                 break;
2206         case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
2207                 if (iface_param->iface_num & 0x1)
2208                         break;
2209                 init_fw_cb->ipv6_traffic_class = iface_param->value[0];
2210                 break;
2211         case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
2212                 if (iface_param->iface_num & 0x1)
2213                         break;
2214                 init_fw_cb->ipv6_hop_limit = iface_param->value[0];
2215                 break;
2216         case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
2217                 if (iface_param->iface_num & 0x1)
2218                         break;
2219                 init_fw_cb->ipv6_nd_reach_time =
2220                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2221                 break;
2222         case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
2223                 if (iface_param->iface_num & 0x1)
2224                         break;
2225                 init_fw_cb->ipv6_nd_rexmit_timer =
2226                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2227                 break;
2228         case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
2229                 if (iface_param->iface_num & 0x1)
2230                         break;
2231                 init_fw_cb->ipv6_nd_stale_timeout =
2232                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2233                 break;
2234         case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
2235                 if (iface_param->iface_num & 0x1)
2236                         break;
2237                 init_fw_cb->ipv6_dup_addr_detect_count = iface_param->value[0];
2238                 break;
2239         case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
2240                 if (iface_param->iface_num & 0x1)
2241                         break;
2242                 init_fw_cb->ipv6_gw_advrt_mtu =
2243                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2244                 break;
2245         default:
2246                 ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
2247                            iface_param->param);
2248                 break;
2249         }
2250 }
2251
2252 static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
2253                              struct iscsi_iface_param_info *iface_param,
2254                              struct addr_ctrl_blk *init_fw_cb)
2255 {
2256         switch (iface_param->param) {
2257         case ISCSI_NET_PARAM_IPV4_ADDR:
2258                 memcpy(init_fw_cb->ipv4_addr, iface_param->value,
2259                        sizeof(init_fw_cb->ipv4_addr));
2260                 break;
2261         case ISCSI_NET_PARAM_IPV4_SUBNET:
2262                 memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
2263                        sizeof(init_fw_cb->ipv4_subnet));
2264                 break;
2265         case ISCSI_NET_PARAM_IPV4_GW:
2266                 memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
2267                        sizeof(init_fw_cb->ipv4_gw_addr));
2268                 break;
2269         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
2270                 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
2271                         init_fw_cb->ipv4_tcp_opts |=
2272                                         cpu_to_le16(TCPOPT_DHCP_ENABLE);
2273                 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
2274                         init_fw_cb->ipv4_tcp_opts &=
2275                                         cpu_to_le16(~TCPOPT_DHCP_ENABLE);
2276                 else
2277                         ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
2278                 break;
2279         case ISCSI_NET_PARAM_IFACE_ENABLE:
2280                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
2281                         init_fw_cb->ipv4_ip_opts |=
2282                                 cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
2283                         qla4xxx_create_ipv4_iface(ha);
2284                 } else {
2285                         init_fw_cb->ipv4_ip_opts &=
2286                                 cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
2287                                             0xFFFF);
2288                         qla4xxx_destroy_ipv4_iface(ha);
2289                 }
2290                 break;
2291         case ISCSI_NET_PARAM_VLAN_TAG:
2292                 if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
2293                         break;
2294                 init_fw_cb->ipv4_vlan_tag =
2295                                 cpu_to_be16(*(uint16_t *)iface_param->value);
2296                 break;
2297         case ISCSI_NET_PARAM_VLAN_ENABLED:
2298                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
2299                         init_fw_cb->ipv4_ip_opts |=
2300                                         cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
2301                 else
2302                         init_fw_cb->ipv4_ip_opts &=
2303                                         cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
2304                 break;
2305         case ISCSI_NET_PARAM_MTU:
2306                 init_fw_cb->eth_mtu_size =
2307                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2308                 break;
2309         case ISCSI_NET_PARAM_PORT:
2310                 init_fw_cb->ipv4_port =
2311                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2312                 break;
2313         case ISCSI_NET_PARAM_DELAYED_ACK_EN:
2314                 if (iface_param->iface_num & 0x1)
2315                         break;
2316                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2317                         init_fw_cb->ipv4_tcp_opts |=
2318                                 cpu_to_le16(TCPOPT_DELAYED_ACK_DISABLE);
2319                 else
2320                         init_fw_cb->ipv4_tcp_opts &=
2321                                 cpu_to_le16(~TCPOPT_DELAYED_ACK_DISABLE &
2322                                             0xFFFF);
2323                 break;
2324         case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
2325                 if (iface_param->iface_num & 0x1)
2326                         break;
2327                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2328                         init_fw_cb->ipv4_tcp_opts |=
2329                                 cpu_to_le16(TCPOPT_NAGLE_ALGO_DISABLE);
2330                 else
2331                         init_fw_cb->ipv4_tcp_opts &=
2332                                 cpu_to_le16(~TCPOPT_NAGLE_ALGO_DISABLE);
2333                 break;
2334         case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
2335                 if (iface_param->iface_num & 0x1)
2336                         break;
2337                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2338                         init_fw_cb->ipv4_tcp_opts |=
2339                                 cpu_to_le16(TCPOPT_WINDOW_SCALE_DISABLE);
2340                 else
2341                         init_fw_cb->ipv4_tcp_opts &=
2342                                 cpu_to_le16(~TCPOPT_WINDOW_SCALE_DISABLE);
2343                 break;
2344         case ISCSI_NET_PARAM_TCP_WSF:
2345                 if (iface_param->iface_num & 0x1)
2346                         break;
2347                 init_fw_cb->ipv4_tcp_wsf = iface_param->value[0];
2348                 break;
2349         case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
2350                 if (iface_param->iface_num & 0x1)
2351                         break;
2352                 init_fw_cb->ipv4_tcp_opts &= cpu_to_le16(~TCPOPT_TIMER_SCALE);
2353                 init_fw_cb->ipv4_tcp_opts |=
2354                                 cpu_to_le16((iface_param->value[0] << 1) &
2355                                             TCPOPT_TIMER_SCALE);
2356                 break;
2357         case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
2358                 if (iface_param->iface_num & 0x1)
2359                         break;
2360                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2361                         init_fw_cb->ipv4_tcp_opts |=
2362                                 cpu_to_le16(TCPOPT_TIMESTAMP_ENABLE);
2363                 else
2364                         init_fw_cb->ipv4_tcp_opts &=
2365                                 cpu_to_le16(~TCPOPT_TIMESTAMP_ENABLE);
2366                 break;
2367         case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
2368                 if (iface_param->iface_num & 0x1)
2369                         break;
2370                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2371                         init_fw_cb->ipv4_tcp_opts |=
2372                                 cpu_to_le16(TCPOPT_DNS_SERVER_IP_EN);
2373                 else
2374                         init_fw_cb->ipv4_tcp_opts &=
2375                                 cpu_to_le16(~TCPOPT_DNS_SERVER_IP_EN);
2376                 break;
2377         case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
2378                 if (iface_param->iface_num & 0x1)
2379                         break;
2380                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2381                         init_fw_cb->ipv4_tcp_opts |=
2382                                 cpu_to_le16(TCPOPT_SLP_DA_INFO_EN);
2383                 else
2384                         init_fw_cb->ipv4_tcp_opts &=
2385                                 cpu_to_le16(~TCPOPT_SLP_DA_INFO_EN);
2386                 break;
2387         case ISCSI_NET_PARAM_IPV4_TOS_EN:
2388                 if (iface_param->iface_num & 0x1)
2389                         break;
2390                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2391                         init_fw_cb->ipv4_ip_opts |=
2392                                 cpu_to_le16(IPOPT_IPV4_TOS_EN);
2393                 else
2394                         init_fw_cb->ipv4_ip_opts &=
2395                                 cpu_to_le16(~IPOPT_IPV4_TOS_EN);
2396                 break;
2397         case ISCSI_NET_PARAM_IPV4_TOS:
2398                 if (iface_param->iface_num & 0x1)
2399                         break;
2400                 init_fw_cb->ipv4_tos = iface_param->value[0];
2401                 break;
2402         case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
2403                 if (iface_param->iface_num & 0x1)
2404                         break;
2405                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2406                         init_fw_cb->ipv4_ip_opts |=
2407                                         cpu_to_le16(IPOPT_GRAT_ARP_EN);
2408                 else
2409                         init_fw_cb->ipv4_ip_opts &=
2410                                         cpu_to_le16(~IPOPT_GRAT_ARP_EN);
2411                 break;
2412         case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
2413                 if (iface_param->iface_num & 0x1)
2414                         break;
2415                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2416                         init_fw_cb->ipv4_ip_opts |=
2417                                 cpu_to_le16(IPOPT_ALT_CID_EN);
2418                 else
2419                         init_fw_cb->ipv4_ip_opts &=
2420                                 cpu_to_le16(~IPOPT_ALT_CID_EN);
2421                 break;
2422         case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
2423                 if (iface_param->iface_num & 0x1)
2424                         break;
2425                 memcpy(init_fw_cb->ipv4_dhcp_alt_cid, iface_param->value,
2426                        (sizeof(init_fw_cb->ipv4_dhcp_alt_cid) - 1));
2427                 init_fw_cb->ipv4_dhcp_alt_cid_len =
2428                                         strlen(init_fw_cb->ipv4_dhcp_alt_cid);
2429                 break;
2430         case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
2431                 if (iface_param->iface_num & 0x1)
2432                         break;
2433                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2434                         init_fw_cb->ipv4_ip_opts |=
2435                                         cpu_to_le16(IPOPT_REQ_VID_EN);
2436                 else
2437                         init_fw_cb->ipv4_ip_opts &=
2438                                         cpu_to_le16(~IPOPT_REQ_VID_EN);
2439                 break;
2440         case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
2441                 if (iface_param->iface_num & 0x1)
2442                         break;
2443                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2444                         init_fw_cb->ipv4_ip_opts |=
2445                                         cpu_to_le16(IPOPT_USE_VID_EN);
2446                 else
2447                         init_fw_cb->ipv4_ip_opts &=
2448                                         cpu_to_le16(~IPOPT_USE_VID_EN);
2449                 break;
2450         case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
2451                 if (iface_param->iface_num & 0x1)
2452                         break;
2453                 memcpy(init_fw_cb->ipv4_dhcp_vid, iface_param->value,
2454                        (sizeof(init_fw_cb->ipv4_dhcp_vid) - 1));
2455                 init_fw_cb->ipv4_dhcp_vid_len =
2456                                         strlen(init_fw_cb->ipv4_dhcp_vid);
2457                 break;
2458         case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
2459                 if (iface_param->iface_num & 0x1)
2460                         break;
2461                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2462                         init_fw_cb->ipv4_ip_opts |=
2463                                         cpu_to_le16(IPOPT_LEARN_IQN_EN);
2464                 else
2465                         init_fw_cb->ipv4_ip_opts &=
2466                                         cpu_to_le16(~IPOPT_LEARN_IQN_EN);
2467                 break;
2468         case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
2469                 if (iface_param->iface_num & 0x1)
2470                         break;
2471                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2472                         init_fw_cb->ipv4_ip_opts |=
2473                                 cpu_to_le16(IPOPT_FRAGMENTATION_DISABLE);
2474                 else
2475                         init_fw_cb->ipv4_ip_opts &=
2476                                 cpu_to_le16(~IPOPT_FRAGMENTATION_DISABLE);
2477                 break;
2478         case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
2479                 if (iface_param->iface_num & 0x1)
2480                         break;
2481                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2482                         init_fw_cb->ipv4_ip_opts |=
2483                                 cpu_to_le16(IPOPT_IN_FORWARD_EN);
2484                 else
2485                         init_fw_cb->ipv4_ip_opts &=
2486                                 cpu_to_le16(~IPOPT_IN_FORWARD_EN);
2487                 break;
2488         case ISCSI_NET_PARAM_REDIRECT_EN:
2489                 if (iface_param->iface_num & 0x1)
2490                         break;
2491                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2492                         init_fw_cb->ipv4_ip_opts |=
2493                                 cpu_to_le16(IPOPT_ARP_REDIRECT_EN);
2494                 else
2495                         init_fw_cb->ipv4_ip_opts &=
2496                                 cpu_to_le16(~IPOPT_ARP_REDIRECT_EN);
2497                 break;
2498         case ISCSI_NET_PARAM_IPV4_TTL:
2499                 if (iface_param->iface_num & 0x1)
2500                         break;
2501                 init_fw_cb->ipv4_ttl = iface_param->value[0];
2502                 break;
2503         default:
2504                 ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
2505                            iface_param->param);
2506                 break;
2507         }
2508 }
2509
2510 static void qla4xxx_set_iscsi_param(struct scsi_qla_host *ha,
2511                                     struct iscsi_iface_param_info *iface_param,
2512                                     struct addr_ctrl_blk *init_fw_cb)
2513 {
2514         switch (iface_param->param) {
2515         case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
2516                 if (iface_param->iface_num & 0x1)
2517                         break;
2518                 init_fw_cb->def_timeout =
2519                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2520                 break;
2521         case ISCSI_IFACE_PARAM_HDRDGST_EN:
2522                 if (iface_param->iface_num & 0x1)
2523                         break;
2524                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2525                         init_fw_cb->iscsi_opts |=
2526                                 cpu_to_le16(ISCSIOPTS_HEADER_DIGEST_EN);
2527                 else
2528                         init_fw_cb->iscsi_opts &=
2529                                 cpu_to_le16(~ISCSIOPTS_HEADER_DIGEST_EN);
2530                 break;
2531         case ISCSI_IFACE_PARAM_DATADGST_EN:
2532                 if (iface_param->iface_num & 0x1)
2533                         break;
2534                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2535                         init_fw_cb->iscsi_opts |=
2536                                 cpu_to_le16(ISCSIOPTS_DATA_DIGEST_EN);
2537                 else
2538                         init_fw_cb->iscsi_opts &=
2539                                 cpu_to_le16(~ISCSIOPTS_DATA_DIGEST_EN);
2540                 break;
2541         case ISCSI_IFACE_PARAM_IMM_DATA_EN:
2542                 if (iface_param->iface_num & 0x1)
2543                         break;
2544                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2545                         init_fw_cb->iscsi_opts |=
2546                                 cpu_to_le16(ISCSIOPTS_IMMEDIATE_DATA_EN);
2547                 else
2548                         init_fw_cb->iscsi_opts &=
2549                                 cpu_to_le16(~ISCSIOPTS_IMMEDIATE_DATA_EN);
2550                 break;
2551         case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
2552                 if (iface_param->iface_num & 0x1)
2553                         break;
2554                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2555                         init_fw_cb->iscsi_opts |=
2556                                 cpu_to_le16(ISCSIOPTS_INITIAL_R2T_EN);
2557                 else
2558                         init_fw_cb->iscsi_opts &=
2559                                 cpu_to_le16(~ISCSIOPTS_INITIAL_R2T_EN);
2560                 break;
2561         case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
2562                 if (iface_param->iface_num & 0x1)
2563                         break;
2564                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2565                         init_fw_cb->iscsi_opts |=
2566                                 cpu_to_le16(ISCSIOPTS_DATA_SEQ_INORDER_EN);
2567                 else
2568                         init_fw_cb->iscsi_opts &=
2569                                 cpu_to_le16(~ISCSIOPTS_DATA_SEQ_INORDER_EN);
2570                 break;
2571         case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
2572                 if (iface_param->iface_num & 0x1)
2573                         break;
2574                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2575                         init_fw_cb->iscsi_opts |=
2576                                 cpu_to_le16(ISCSIOPTS_DATA_PDU_INORDER_EN);
2577                 else
2578                         init_fw_cb->iscsi_opts &=
2579                                 cpu_to_le16(~ISCSIOPTS_DATA_PDU_INORDER_EN);
2580                 break;
2581         case ISCSI_IFACE_PARAM_ERL:
2582                 if (iface_param->iface_num & 0x1)
2583                         break;
2584                 init_fw_cb->iscsi_opts &= cpu_to_le16(~ISCSIOPTS_ERL);
2585                 init_fw_cb->iscsi_opts |= cpu_to_le16(iface_param->value[0] &
2586                                                       ISCSIOPTS_ERL);
2587                 break;
2588         case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
2589                 if (iface_param->iface_num & 0x1)
2590                         break;
2591                 init_fw_cb->iscsi_max_pdu_size =
2592                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2593                                 BYTE_UNITS;
2594                 break;
2595         case ISCSI_IFACE_PARAM_FIRST_BURST:
2596                 if (iface_param->iface_num & 0x1)
2597                         break;
2598                 init_fw_cb->iscsi_fburst_len =
2599                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2600                                 BYTE_UNITS;
2601                 break;
2602         case ISCSI_IFACE_PARAM_MAX_R2T:
2603                 if (iface_param->iface_num & 0x1)
2604                         break;
2605                 init_fw_cb->iscsi_max_outstnd_r2t =
2606                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2607                 break;
2608         case ISCSI_IFACE_PARAM_MAX_BURST:
2609                 if (iface_param->iface_num & 0x1)
2610                         break;
2611                 init_fw_cb->iscsi_max_burst_len =
2612                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2613                                 BYTE_UNITS;
2614                 break;
2615         case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
2616                 if (iface_param->iface_num & 0x1)
2617                         break;
2618                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2619                         init_fw_cb->iscsi_opts |=
2620                                 cpu_to_le16(ISCSIOPTS_CHAP_AUTH_EN);
2621                 else
2622                         init_fw_cb->iscsi_opts &=
2623                                 cpu_to_le16(~ISCSIOPTS_CHAP_AUTH_EN);
2624                 break;
2625         case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
2626                 if (iface_param->iface_num & 0x1)
2627                         break;
2628                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2629                         init_fw_cb->iscsi_opts |=
2630                                 cpu_to_le16(ISCSIOPTS_BIDI_CHAP_EN);
2631                 else
2632                         init_fw_cb->iscsi_opts &=
2633                                 cpu_to_le16(~ISCSIOPTS_BIDI_CHAP_EN);
2634                 break;
2635         case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
2636                 if (iface_param->iface_num & 0x1)
2637                         break;
2638                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2639                         init_fw_cb->iscsi_opts |=
2640                                 cpu_to_le16(ISCSIOPTS_DISCOVERY_AUTH_EN);
2641                 else
2642                         init_fw_cb->iscsi_opts &=
2643                                 cpu_to_le16(~ISCSIOPTS_DISCOVERY_AUTH_EN);
2644                 break;
2645         case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
2646                 if (iface_param->iface_num & 0x1)
2647                         break;
2648                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2649                         init_fw_cb->iscsi_opts |=
2650                                 cpu_to_le16(ISCSIOPTS_DISCOVERY_LOGOUT_EN);
2651                 else
2652                         init_fw_cb->iscsi_opts &=
2653                                 cpu_to_le16(~ISCSIOPTS_DISCOVERY_LOGOUT_EN);
2654                 break;
2655         case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
2656                 if (iface_param->iface_num & 0x1)
2657                         break;
2658                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2659                         init_fw_cb->iscsi_opts |=
2660                                 cpu_to_le16(ISCSIOPTS_STRICT_LOGIN_COMP_EN);
2661                 else
2662                         init_fw_cb->iscsi_opts &=
2663                                 cpu_to_le16(~ISCSIOPTS_STRICT_LOGIN_COMP_EN);
2664                 break;
2665         default:
2666                 ql4_printk(KERN_ERR, ha, "Unknown iscsi param = %d\n",
2667                            iface_param->param);
2668                 break;
2669         }
2670 }
2671
2672 static void
2673 qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
2674 {
2675         struct addr_ctrl_blk_def *acb;
2676         acb = (struct addr_ctrl_blk_def *)init_fw_cb;
2677         memset(acb->reserved1, 0, sizeof(acb->reserved1));
2678         memset(acb->reserved2, 0, sizeof(acb->reserved2));
2679         memset(acb->reserved3, 0, sizeof(acb->reserved3));
2680         memset(acb->reserved4, 0, sizeof(acb->reserved4));
2681         memset(acb->reserved5, 0, sizeof(acb->reserved5));
2682         memset(acb->reserved6, 0, sizeof(acb->reserved6));
2683         memset(acb->reserved7, 0, sizeof(acb->reserved7));
2684         memset(acb->reserved8, 0, sizeof(acb->reserved8));
2685         memset(acb->reserved9, 0, sizeof(acb->reserved9));
2686         memset(acb->reserved10, 0, sizeof(acb->reserved10));
2687         memset(acb->reserved11, 0, sizeof(acb->reserved11));
2688         memset(acb->reserved12, 0, sizeof(acb->reserved12));
2689         memset(acb->reserved13, 0, sizeof(acb->reserved13));
2690         memset(acb->reserved14, 0, sizeof(acb->reserved14));
2691         memset(acb->reserved15, 0, sizeof(acb->reserved15));
2692 }
2693
2694 static int
2695 qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
2696 {
2697         struct scsi_qla_host *ha = to_qla_host(shost);
2698         int rval = 0;
2699         struct iscsi_iface_param_info *iface_param = NULL;
2700         struct addr_ctrl_blk *init_fw_cb = NULL;
2701         dma_addr_t init_fw_cb_dma;
2702         uint32_t mbox_cmd[MBOX_REG_COUNT];
2703         uint32_t mbox_sts[MBOX_REG_COUNT];
2704         uint32_t rem = len;
2705         struct nlattr *attr;
2706
2707         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
2708                                         sizeof(struct addr_ctrl_blk),
2709                                         &init_fw_cb_dma, GFP_KERNEL);
2710         if (!init_fw_cb) {
2711                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
2712                            __func__);
2713                 return -ENOMEM;
2714         }
2715
2716         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2717         memset(&mbox_sts, 0, sizeof(mbox_sts));
2718
2719         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
2720                 ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
2721                 rval = -EIO;
2722                 goto exit_init_fw_cb;
2723         }
2724
2725         nla_for_each_attr(attr, data, len, rem) {
2726                 iface_param = nla_data(attr);
2727
2728                 if (iface_param->param_type == ISCSI_NET_PARAM) {
2729                         switch (iface_param->iface_type) {
2730                         case ISCSI_IFACE_TYPE_IPV4:
2731                                 switch (iface_param->iface_num) {
2732                                 case 0:
2733                                         qla4xxx_set_ipv4(ha, iface_param,
2734                                                          init_fw_cb);
2735                                         break;
2736                                 default:
2737                                 /* Cannot have more than one IPv4 interface */
2738                                         ql4_printk(KERN_ERR, ha,
2739                                                    "Invalid IPv4 iface number = %d\n",
2740                                                    iface_param->iface_num);
2741                                         break;
2742                                 }
2743                                 break;
2744                         case ISCSI_IFACE_TYPE_IPV6:
2745                                 switch (iface_param->iface_num) {
2746                                 case 0:
2747                                 case 1:
2748                                         qla4xxx_set_ipv6(ha, iface_param,
2749                                                          init_fw_cb);
2750                                         break;
2751                                 default:
2752                                 /* Cannot have more than two IPv6 interface */
2753                                         ql4_printk(KERN_ERR, ha,
2754                                                    "Invalid IPv6 iface number = %d\n",
2755                                                    iface_param->iface_num);
2756                                         break;
2757                                 }
2758                                 break;
2759                         default:
2760                                 ql4_printk(KERN_ERR, ha,
2761                                            "Invalid iface type\n");
2762                                 break;
2763                         }
2764                 } else if (iface_param->param_type == ISCSI_IFACE_PARAM) {
2765                                 qla4xxx_set_iscsi_param(ha, iface_param,
2766                                                         init_fw_cb);
2767                 } else {
2768                         continue;
2769                 }
2770         }
2771
2772         init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
2773
2774         rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
2775                                  sizeof(struct addr_ctrl_blk),
2776                                  FLASH_OPT_RMW_COMMIT);
2777         if (rval != QLA_SUCCESS) {
2778                 ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
2779                            __func__);
2780                 rval = -EIO;
2781                 goto exit_init_fw_cb;
2782         }
2783
2784         rval = qla4xxx_disable_acb(ha);
2785         if (rval != QLA_SUCCESS) {
2786                 ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
2787                            __func__);
2788                 rval = -EIO;
2789                 goto exit_init_fw_cb;
2790         }
2791
2792         wait_for_completion_timeout(&ha->disable_acb_comp,
2793                                     DISABLE_ACB_TOV * HZ);
2794
2795         qla4xxx_initcb_to_acb(init_fw_cb);
2796
2797         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
2798         if (rval != QLA_SUCCESS) {
2799                 ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
2800                            __func__);
2801                 rval = -EIO;
2802                 goto exit_init_fw_cb;
2803         }
2804
2805         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
2806         qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
2807                                   init_fw_cb_dma);
2808
2809 exit_init_fw_cb:
2810         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
2811                           init_fw_cb, init_fw_cb_dma);
2812
2813         return rval;
2814 }
2815
2816 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
2817                                      enum iscsi_param param, char *buf)
2818 {
2819         struct iscsi_session *sess = cls_sess->dd_data;
2820         struct ddb_entry *ddb_entry = sess->dd_data;
2821         struct scsi_qla_host *ha = ddb_entry->ha;
2822         struct iscsi_cls_conn *cls_conn = ddb_entry->conn;
2823         struct ql4_chap_table chap_tbl;
2824         int rval, len;
2825         uint16_t idx;
2826
2827         memset(&chap_tbl, 0, sizeof(chap_tbl));
2828         switch (param) {
2829         case ISCSI_PARAM_CHAP_IN_IDX:
2830                 rval = qla4xxx_get_chap_index(ha, sess->username_in,
2831                                               sess->password_in, BIDI_CHAP,
2832                                               &idx);
2833                 if (rval)
2834                         len = sprintf(buf, "\n");
2835                 else
2836                         len = sprintf(buf, "%hu\n", idx);
2837                 break;
2838         case ISCSI_PARAM_CHAP_OUT_IDX:
2839                 if (ddb_entry->ddb_type == FLASH_DDB) {
2840                         if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
2841                                 idx = ddb_entry->chap_tbl_idx;
2842                                 rval = QLA_SUCCESS;
2843                         } else {
2844                                 rval = QLA_ERROR;
2845                         }
2846                 } else {
2847                         rval = qla4xxx_get_chap_index(ha, sess->username,
2848                                                       sess->password,
2849                                                       LOCAL_CHAP, &idx);
2850                 }
2851                 if (rval)
2852                         len = sprintf(buf, "\n");
2853                 else
2854                         len = sprintf(buf, "%hu\n", idx);
2855                 break;
2856         case ISCSI_PARAM_USERNAME:
2857         case ISCSI_PARAM_PASSWORD:
2858                 /* First, populate session username and password for FLASH DDB,
2859                  * if not already done. This happens when session login fails
2860                  * for a FLASH DDB.
2861                  */
2862                 if (ddb_entry->ddb_type == FLASH_DDB &&
2863                     ddb_entry->chap_tbl_idx != INVALID_ENTRY &&
2864                     !sess->username && !sess->password) {
2865                         idx = ddb_entry->chap_tbl_idx;
2866                         rval = qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
2867                                                             chap_tbl.secret,
2868                                                             idx);
2869                         if (!rval) {
2870                                 iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
2871                                                 (char *)chap_tbl.name,
2872                                                 strlen((char *)chap_tbl.name));
2873                                 iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
2874                                                 (char *)chap_tbl.secret,
2875                                                 chap_tbl.secret_len);
2876                         }
2877                 }
2878                 /* fall through */
2879         default:
2880                 return iscsi_session_get_param(cls_sess, param, buf);
2881         }
2882
2883         return len;
2884 }
2885
2886 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
2887                                   enum iscsi_param param, char *buf)
2888 {
2889         struct iscsi_conn *conn;
2890         struct qla_conn *qla_conn;
2891         struct sockaddr *dst_addr;
2892
2893         conn = cls_conn->dd_data;
2894         qla_conn = conn->dd_data;
2895         dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
2896
2897         switch (param) {
2898         case ISCSI_PARAM_CONN_PORT:
2899         case ISCSI_PARAM_CONN_ADDRESS:
2900                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
2901                                                  dst_addr, param, buf);
2902         default:
2903                 return iscsi_conn_get_param(cls_conn, param, buf);
2904         }
2905 }
2906
2907 int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
2908 {
2909         uint32_t mbx_sts = 0;
2910         uint16_t tmp_ddb_index;
2911         int ret;
2912
2913 get_ddb_index:
2914         tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
2915
2916         if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
2917                 DEBUG2(ql4_printk(KERN_INFO, ha,
2918                                   "Free DDB index not available\n"));
2919                 ret = QLA_ERROR;
2920                 goto exit_get_ddb_index;
2921         }
2922
2923         if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
2924                 goto get_ddb_index;
2925
2926         DEBUG2(ql4_printk(KERN_INFO, ha,
2927                           "Found a free DDB index at %d\n", tmp_ddb_index));
2928         ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
2929         if (ret == QLA_ERROR) {
2930                 if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
2931                         ql4_printk(KERN_INFO, ha,
2932                                    "DDB index = %d not available trying next\n",
2933                                    tmp_ddb_index);
2934                         goto get_ddb_index;
2935                 }
2936                 DEBUG2(ql4_printk(KERN_INFO, ha,
2937                                   "Free FW DDB not available\n"));
2938         }
2939
2940         *ddb_index = tmp_ddb_index;
2941
2942 exit_get_ddb_index:
2943         return ret;
2944 }
2945
2946 static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
2947                                    struct ddb_entry *ddb_entry,
2948                                    char *existing_ipaddr,
2949                                    char *user_ipaddr)
2950 {
2951         uint8_t dst_ipaddr[IPv6_ADDR_LEN];
2952         char formatted_ipaddr[DDB_IPADDR_LEN];
2953         int status = QLA_SUCCESS, ret = 0;
2954
2955         if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
2956                 ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
2957                                '\0', NULL);
2958                 if (ret == 0) {
2959                         status = QLA_ERROR;
2960                         goto out_match;
2961                 }
2962                 ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
2963         } else {
2964                 ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
2965                                '\0', NULL);
2966                 if (ret == 0) {
2967                         status = QLA_ERROR;
2968                         goto out_match;
2969                 }
2970                 ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
2971         }
2972
2973         if (strcmp(existing_ipaddr, formatted_ipaddr))
2974                 status = QLA_ERROR;
2975
2976 out_match:
2977         return status;
2978 }
2979
2980 static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
2981                                       struct iscsi_cls_conn *cls_conn)
2982 {
2983         int idx = 0, max_ddbs, rval;
2984         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
2985         struct iscsi_session *sess, *existing_sess;
2986         struct iscsi_conn *conn, *existing_conn;
2987         struct ddb_entry *ddb_entry;
2988
2989         sess = cls_sess->dd_data;
2990         conn = cls_conn->dd_data;
2991
2992         if (sess->targetname == NULL ||
2993             conn->persistent_address == NULL ||
2994             conn->persistent_port == 0)
2995                 return QLA_ERROR;
2996
2997         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
2998                                      MAX_DEV_DB_ENTRIES;
2999
3000         for (idx = 0; idx < max_ddbs; idx++) {
3001                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
3002                 if (ddb_entry == NULL)
3003                         continue;
3004
3005                 if (ddb_entry->ddb_type != FLASH_DDB)
3006                         continue;
3007
3008                 existing_sess = ddb_entry->sess->dd_data;
3009                 existing_conn = ddb_entry->conn->dd_data;
3010
3011                 if (existing_sess->targetname == NULL ||
3012                     existing_conn->persistent_address == NULL ||
3013                     existing_conn->persistent_port == 0)
3014                         continue;
3015
3016                 DEBUG2(ql4_printk(KERN_INFO, ha,
3017                                   "IQN = %s User IQN = %s\n",
3018                                   existing_sess->targetname,
3019                                   sess->targetname));
3020
3021                 DEBUG2(ql4_printk(KERN_INFO, ha,
3022                                   "IP = %s User IP = %s\n",
3023                                   existing_conn->persistent_address,
3024                                   conn->persistent_address));
3025
3026                 DEBUG2(ql4_printk(KERN_INFO, ha,
3027                                   "Port = %d User Port = %d\n",
3028                                   existing_conn->persistent_port,
3029                                   conn->persistent_port));
3030
3031                 if (strcmp(existing_sess->targetname, sess->targetname))
3032                         continue;
3033                 rval = qla4xxx_match_ipaddress(ha, ddb_entry,
3034                                         existing_conn->persistent_address,
3035                                         conn->persistent_address);
3036                 if (rval == QLA_ERROR)
3037                         continue;
3038                 if (existing_conn->persistent_port != conn->persistent_port)
3039                         continue;
3040                 break;
3041         }
3042
3043         if (idx == max_ddbs)
3044                 return QLA_ERROR;
3045
3046         DEBUG2(ql4_printk(KERN_INFO, ha,
3047                           "Match found in fwdb sessions\n"));
3048         return QLA_SUCCESS;
3049 }
3050
3051 static struct iscsi_cls_session *
3052 qla4xxx_session_create(struct iscsi_endpoint *ep,
3053                         uint16_t cmds_max, uint16_t qdepth,
3054                         uint32_t initial_cmdsn)
3055 {
3056         struct iscsi_cls_session *cls_sess;
3057         struct scsi_qla_host *ha;
3058         struct qla_endpoint *qla_ep;
3059         struct ddb_entry *ddb_entry;
3060         uint16_t ddb_index;
3061         struct iscsi_session *sess;
3062         struct sockaddr *dst_addr;
3063         int ret;
3064
3065         if (!ep) {
3066                 printk(KERN_ERR "qla4xxx: missing ep.\n");
3067                 return NULL;
3068         }
3069
3070         qla_ep = ep->dd_data;
3071         dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
3072         ha = to_qla_host(qla_ep->host);
3073         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
3074                           ha->host_no));
3075
3076         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
3077         if (ret == QLA_ERROR)
3078                 return NULL;
3079
3080         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
3081                                        cmds_max, sizeof(struct ddb_entry),
3082                                        sizeof(struct ql4_task_data),
3083                                        initial_cmdsn, ddb_index);
3084         if (!cls_sess)
3085                 return NULL;
3086
3087         sess = cls_sess->dd_data;
3088         ddb_entry = sess->dd_data;
3089         ddb_entry->fw_ddb_index = ddb_index;
3090         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
3091         ddb_entry->ha = ha;
3092         ddb_entry->sess = cls_sess;
3093         ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
3094         ddb_entry->ddb_change = qla4xxx_ddb_change;
3095         clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags);
3096         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
3097         ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
3098         ha->tot_ddbs++;
3099
3100         return cls_sess;
3101 }
3102
3103 static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
3104 {
3105         struct iscsi_session *sess;
3106         struct ddb_entry *ddb_entry;
3107         struct scsi_qla_host *ha;
3108         unsigned long flags, wtime;
3109         struct dev_db_entry *fw_ddb_entry = NULL;
3110         dma_addr_t fw_ddb_entry_dma;
3111         uint32_t ddb_state;
3112         int ret;
3113
3114         sess = cls_sess->dd_data;
3115         ddb_entry = sess->dd_data;
3116         ha = ddb_entry->ha;
3117         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
3118                           ha->host_no));
3119
3120         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3121                                           &fw_ddb_entry_dma, GFP_KERNEL);
3122         if (!fw_ddb_entry) {
3123                 ql4_printk(KERN_ERR, ha,
3124                            "%s: Unable to allocate dma buffer\n", __func__);
3125                 goto destroy_session;
3126         }
3127
3128         wtime = jiffies + (HZ * LOGOUT_TOV);
3129         do {
3130                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
3131                                               fw_ddb_entry, fw_ddb_entry_dma,
3132                                               NULL, NULL, &ddb_state, NULL,
3133                                               NULL, NULL);
3134                 if (ret == QLA_ERROR)
3135                         goto destroy_session;
3136
3137                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
3138                     (ddb_state == DDB_DS_SESSION_FAILED))
3139                         goto destroy_session;
3140
3141                 schedule_timeout_uninterruptible(HZ);
3142         } while ((time_after(wtime, jiffies)));
3143
3144 destroy_session:
3145         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
3146         if (test_and_clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags))
3147                 clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
3148         spin_lock_irqsave(&ha->hardware_lock, flags);
3149         qla4xxx_free_ddb(ha, ddb_entry);
3150         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3151
3152         iscsi_session_teardown(cls_sess);
3153
3154         if (fw_ddb_entry)
3155                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3156                                   fw_ddb_entry, fw_ddb_entry_dma);
3157 }
3158
3159 static struct iscsi_cls_conn *
3160 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
3161 {
3162         struct iscsi_cls_conn *cls_conn;
3163         struct iscsi_session *sess;
3164         struct ddb_entry *ddb_entry;
3165         struct scsi_qla_host *ha;
3166
3167         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
3168                                     conn_idx);
3169         if (!cls_conn) {
3170                 pr_info("%s: Can not create connection for conn_idx = %u\n",
3171                         __func__, conn_idx);
3172                 return NULL;
3173         }
3174
3175         sess = cls_sess->dd_data;
3176         ddb_entry = sess->dd_data;
3177         ddb_entry->conn = cls_conn;
3178
3179         ha = ddb_entry->ha;
3180         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: conn_idx = %u\n", __func__,
3181                           conn_idx));
3182         return cls_conn;
3183 }
3184
3185 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
3186                              struct iscsi_cls_conn *cls_conn,
3187                              uint64_t transport_fd, int is_leading)
3188 {
3189         struct iscsi_conn *conn;
3190         struct qla_conn *qla_conn;
3191         struct iscsi_endpoint *ep;
3192         struct ddb_entry *ddb_entry;
3193         struct scsi_qla_host *ha;
3194         struct iscsi_session *sess;
3195
3196         sess = cls_session->dd_data;
3197         ddb_entry = sess->dd_data;
3198         ha = ddb_entry->ha;
3199
3200         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: sid = %d, cid = %d\n", __func__,
3201                           cls_session->sid, cls_conn->cid));
3202
3203         if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
3204                 return -EINVAL;
3205         ep = iscsi_lookup_endpoint(transport_fd);
3206         if (!ep)
3207                 return -EINVAL;
3208         conn = cls_conn->dd_data;
3209         qla_conn = conn->dd_data;
3210         qla_conn->qla_ep = ep->dd_data;
3211         return 0;
3212 }
3213
3214 static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
3215 {
3216         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3217         struct iscsi_session *sess;
3218         struct ddb_entry *ddb_entry;
3219         struct scsi_qla_host *ha;
3220         struct dev_db_entry *fw_ddb_entry = NULL;
3221         dma_addr_t fw_ddb_entry_dma;
3222         uint32_t mbx_sts = 0;
3223         int ret = 0;
3224         int status = QLA_SUCCESS;
3225
3226         sess = cls_sess->dd_data;
3227         ddb_entry = sess->dd_data;
3228         ha = ddb_entry->ha;
3229         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: sid = %d, cid = %d\n", __func__,
3230                           cls_sess->sid, cls_conn->cid));
3231
3232         /* Check if we have  matching FW DDB, if yes then do not
3233          * login to this target. This could cause target to logout previous
3234          * connection
3235          */
3236         ret = qla4xxx_match_fwdb_session(ha, cls_conn);
3237         if (ret == QLA_SUCCESS) {
3238                 ql4_printk(KERN_INFO, ha,
3239                            "Session already exist in FW.\n");
3240                 ret = -EEXIST;
3241                 goto exit_conn_start;
3242         }
3243
3244         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3245                                           &fw_ddb_entry_dma, GFP_KERNEL);
3246         if (!fw_ddb_entry) {
3247                 ql4_printk(KERN_ERR, ha,
3248                            "%s: Unable to allocate dma buffer\n", __func__);
3249                 ret = -ENOMEM;
3250                 goto exit_conn_start;
3251         }
3252
3253         ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
3254         if (ret) {
3255                 /* If iscsid is stopped and started then no need to do
3256                 * set param again since ddb state will be already
3257                 * active and FW does not allow set ddb to an
3258                 * active session.
3259                 */
3260                 if (mbx_sts)
3261                         if (ddb_entry->fw_ddb_device_state ==
3262                                                 DDB_DS_SESSION_ACTIVE) {
3263                                 ddb_entry->unblock_sess(ddb_entry->sess);
3264                                 goto exit_set_param;
3265                         }
3266
3267                 ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
3268                            __func__, ddb_entry->fw_ddb_index);
3269                 goto exit_conn_start;
3270         }
3271
3272         status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
3273         if (status == QLA_ERROR) {
3274                 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
3275                            sess->targetname);
3276                 ret = -EINVAL;
3277                 goto exit_conn_start;
3278         }
3279
3280         if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
3281                 ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
3282
3283         DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
3284                       ddb_entry->fw_ddb_device_state));
3285
3286 exit_set_param:
3287         ret = 0;
3288
3289 exit_conn_start:
3290         if (fw_ddb_entry)
3291                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3292                                   fw_ddb_entry, fw_ddb_entry_dma);
3293         return ret;
3294 }
3295
3296 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
3297 {
3298         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3299         struct iscsi_session *sess;
3300         struct scsi_qla_host *ha;
3301         struct ddb_entry *ddb_entry;
3302         int options;
3303
3304         sess = cls_sess->dd_data;
3305         ddb_entry = sess->dd_data;
3306         ha = ddb_entry->ha;
3307         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: cid = %d\n", __func__,
3308                           cls_conn->cid));
3309
3310         options = LOGOUT_OPTION_CLOSE_SESSION;
3311         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
3312                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
3313 }
3314
3315 static void qla4xxx_task_work(struct work_struct *wdata)
3316 {
3317         struct ql4_task_data *task_data;
3318         struct scsi_qla_host *ha;
3319         struct passthru_status *sts;
3320         struct iscsi_task *task;
3321         struct iscsi_hdr *hdr;
3322         uint8_t *data;
3323         uint32_t data_len;
3324         struct iscsi_conn *conn;
3325         int hdr_len;
3326         itt_t itt;
3327
3328         task_data = container_of(wdata, struct ql4_task_data, task_work);
3329         ha = task_data->ha;
3330         task = task_data->task;
3331         sts = &task_data->sts;
3332         hdr_len = sizeof(struct iscsi_hdr);
3333
3334         DEBUG3(printk(KERN_INFO "Status returned\n"));
3335         DEBUG3(qla4xxx_dump_buffer(sts, 64));
3336         DEBUG3(printk(KERN_INFO "Response buffer"));
3337         DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
3338
3339         conn = task->conn;
3340
3341         switch (sts->completionStatus) {
3342         case PASSTHRU_STATUS_COMPLETE:
3343                 hdr = (struct iscsi_hdr *)task_data->resp_buffer;
3344                 /* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
3345                 itt = sts->handle;
3346                 hdr->itt = itt;
3347                 data = task_data->resp_buffer + hdr_len;
3348                 data_len = task_data->resp_len - hdr_len;
3349                 iscsi_complete_pdu(conn, hdr, data, data_len);
3350                 break;
3351         default:
3352                 ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
3353                            sts->completionStatus);
3354                 break;
3355         }
3356         return;
3357 }
3358
3359 static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
3360 {
3361         struct ql4_task_data *task_data;
3362         struct iscsi_session *sess;
3363         struct ddb_entry *ddb_entry;
3364         struct scsi_qla_host *ha;
3365         int hdr_len;
3366
3367         sess = task->conn->session;
3368         ddb_entry = sess->dd_data;
3369         ha = ddb_entry->ha;
3370         task_data = task->dd_data;
3371         memset(task_data, 0, sizeof(struct ql4_task_data));
3372
3373         if (task->sc) {
3374                 ql4_printk(KERN_INFO, ha,
3375                            "%s: SCSI Commands not implemented\n", __func__);
3376                 return -EINVAL;
3377         }
3378
3379         hdr_len = sizeof(struct iscsi_hdr);
3380         task_data->ha = ha;
3381         task_data->task = task;
3382
3383         if (task->data_count) {
3384                 task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
3385                                                      task->data_count,
3386                                                      DMA_TO_DEVICE);
3387         }
3388
3389         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
3390                       __func__, task->conn->max_recv_dlength, hdr_len));
3391
3392         task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
3393         task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
3394                                                     task_data->resp_len,
3395                                                     &task_data->resp_dma,
3396                                                     GFP_ATOMIC);
3397         if (!task_data->resp_buffer)
3398                 goto exit_alloc_pdu;
3399
3400         task_data->req_len = task->data_count + hdr_len;
3401         task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
3402                                                    task_data->req_len,
3403                                                    &task_data->req_dma,
3404                                                    GFP_ATOMIC);
3405         if (!task_data->req_buffer)
3406                 goto exit_alloc_pdu;
3407
3408         task->hdr = task_data->req_buffer;
3409
3410         INIT_WORK(&task_data->task_work, qla4xxx_task_work);
3411
3412         return 0;
3413
3414 exit_alloc_pdu:
3415         if (task_data->resp_buffer)
3416                 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
3417                                   task_data->resp_buffer, task_data->resp_dma);
3418
3419         if (task_data->req_buffer)
3420                 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
3421                                   task_data->req_buffer, task_data->req_dma);
3422         return -ENOMEM;
3423 }
3424
3425 static void qla4xxx_task_cleanup(struct iscsi_task *task)
3426 {
3427         struct ql4_task_data *task_data;
3428         struct iscsi_session *sess;
3429         struct ddb_entry *ddb_entry;
3430         struct scsi_qla_host *ha;
3431         int hdr_len;
3432
3433         hdr_len = sizeof(struct iscsi_hdr);
3434         sess = task->conn->session;
3435         ddb_entry = sess->dd_data;
3436         ha = ddb_entry->ha;
3437         task_data = task->dd_data;
3438
3439         if (task->data_count) {
3440                 dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
3441                                  task->data_count, DMA_TO_DEVICE);
3442         }
3443
3444         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
3445                       __func__, task->conn->max_recv_dlength, hdr_len));
3446
3447         dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
3448                           task_data->resp_buffer, task_data->resp_dma);
3449         dma_free_coherent(&ha->pdev->dev, task_data->req_len,
3450                           task_data->req_buffer, task_data->req_dma);
3451         return;
3452 }
3453
3454 static int qla4xxx_task_xmit(struct iscsi_task *task)
3455 {
3456         struct scsi_cmnd *sc = task->sc;
3457         struct iscsi_session *sess = task->conn->session;
3458         struct ddb_entry *ddb_entry = sess->dd_data;
3459         struct scsi_qla_host *ha = ddb_entry->ha;
3460
3461         if (!sc)
3462                 return qla4xxx_send_passthru0(task);
3463
3464         ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
3465                    __func__);
3466         return -ENOSYS;
3467 }
3468
3469 static int qla4xxx_copy_from_fwddb_param(struct iscsi_bus_flash_session *sess,
3470                                          struct iscsi_bus_flash_conn *conn,
3471                                          struct dev_db_entry *fw_ddb_entry)
3472 {
3473         unsigned long options = 0;
3474         int rc = 0;
3475
3476         options = le16_to_cpu(fw_ddb_entry->options);
3477         conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
3478         if (test_bit(OPT_IPV6_DEVICE, &options)) {
3479                 rc = iscsi_switch_str_param(&sess->portal_type,
3480                                             PORTAL_TYPE_IPV6);
3481                 if (rc)
3482                         goto exit_copy;
3483         } else {
3484                 rc = iscsi_switch_str_param(&sess->portal_type,
3485                                             PORTAL_TYPE_IPV4);
3486                 if (rc)
3487                         goto exit_copy;
3488         }
3489
3490         sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
3491                                               &options);
3492         sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
3493         sess->entry_state = test_bit(OPT_ENTRY_STATE, &options);
3494
3495         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3496         conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
3497         conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
3498         sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
3499         sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
3500         sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
3501                                             &options);
3502         sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
3503         sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
3504         conn->snack_req_en = test_bit(ISCSIOPT_SNACK_REQ_EN, &options);
3505         sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
3506                                              &options);
3507         sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
3508         sess->discovery_auth_optional =
3509                         test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
3510         if (test_bit(ISCSIOPT_ERL1, &options))
3511                 sess->erl |= BIT_1;
3512         if (test_bit(ISCSIOPT_ERL0, &options))
3513                 sess->erl |= BIT_0;
3514
3515         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3516         conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
3517         conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
3518         conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
3519         if (test_bit(TCPOPT_TIMER_SCALE3, &options))
3520                 conn->tcp_timer_scale |= BIT_3;
3521         if (test_bit(TCPOPT_TIMER_SCALE2, &options))
3522                 conn->tcp_timer_scale |= BIT_2;
3523         if (test_bit(TCPOPT_TIMER_SCALE1, &options))
3524                 conn->tcp_timer_scale |= BIT_1;
3525
3526         conn->tcp_timer_scale >>= 1;
3527         conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
3528
3529         options = le16_to_cpu(fw_ddb_entry->ip_options);
3530         conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
3531
3532         conn->max_recv_dlength = BYTE_UNITS *
3533                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
3534         conn->max_xmit_dlength = BYTE_UNITS *
3535                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
3536         sess->first_burst = BYTE_UNITS *
3537                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
3538         sess->max_burst = BYTE_UNITS *
3539                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
3540         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
3541         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3542         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
3543         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
3544         conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
3545         conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
3546         conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
3547         conn->ipv6_flow_label = le16_to_cpu(fw_ddb_entry->ipv6_flow_lbl);
3548         conn->keepalive_timeout = le16_to_cpu(fw_ddb_entry->ka_timeout);
3549         conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
3550         conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
3551         conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
3552         sess->discovery_parent_idx = le16_to_cpu(fw_ddb_entry->ddb_link);
3553         sess->discovery_parent_type = le16_to_cpu(fw_ddb_entry->ddb_link);
3554         sess->chap_out_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3555         sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
3556
3557         sess->default_taskmgmt_timeout =
3558                                 le16_to_cpu(fw_ddb_entry->def_timeout);
3559         conn->port = le16_to_cpu(fw_ddb_entry->port);
3560
3561         options = le16_to_cpu(fw_ddb_entry->options);
3562         conn->ipaddress = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
3563         if (!conn->ipaddress) {
3564                 rc = -ENOMEM;
3565                 goto exit_copy;
3566         }
3567
3568         conn->redirect_ipaddr = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
3569         if (!conn->redirect_ipaddr) {
3570                 rc = -ENOMEM;
3571                 goto exit_copy;
3572         }
3573
3574         memcpy(conn->ipaddress, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
3575         memcpy(conn->redirect_ipaddr, fw_ddb_entry->tgt_addr, IPv6_ADDR_LEN);
3576
3577         if (test_bit(OPT_IPV6_DEVICE, &options)) {
3578                 conn->ipv6_traffic_class = fw_ddb_entry->ipv4_tos;
3579
3580                 conn->link_local_ipv6_addr = kmemdup(
3581                                         fw_ddb_entry->link_local_ipv6_addr,
3582                                         IPv6_ADDR_LEN, GFP_KERNEL);
3583                 if (!conn->link_local_ipv6_addr) {
3584                         rc = -ENOMEM;
3585                         goto exit_copy;
3586                 }
3587         } else {
3588                 conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
3589         }
3590
3591         if (fw_ddb_entry->iscsi_name[0]) {
3592                 rc = iscsi_switch_str_param(&sess->targetname,
3593                                             (char *)fw_ddb_entry->iscsi_name);
3594                 if (rc)
3595                         goto exit_copy;
3596         }
3597
3598         if (fw_ddb_entry->iscsi_alias[0]) {
3599                 rc = iscsi_switch_str_param(&sess->targetalias,
3600                                             (char *)fw_ddb_entry->iscsi_alias);
3601                 if (rc)
3602                         goto exit_copy;
3603         }
3604
3605         COPY_ISID(sess->isid, fw_ddb_entry->isid);
3606
3607 exit_copy:
3608         return rc;
3609 }
3610
3611 static int qla4xxx_copy_to_fwddb_param(struct iscsi_bus_flash_session *sess,
3612                                        struct iscsi_bus_flash_conn *conn,
3613                                        struct dev_db_entry *fw_ddb_entry)
3614 {
3615         uint16_t options;
3616         int rc = 0;
3617
3618         options = le16_to_cpu(fw_ddb_entry->options);
3619         SET_BITVAL(conn->is_fw_assigned_ipv6,  options, BIT_11);
3620         if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
3621                 options |= BIT_8;
3622         else
3623                 options &= ~BIT_8;
3624
3625         SET_BITVAL(sess->auto_snd_tgt_disable, options, BIT_6);
3626         SET_BITVAL(sess->discovery_sess, options, BIT_4);
3627         SET_BITVAL(sess->entry_state, options, BIT_3);
3628         fw_ddb_entry->options = cpu_to_le16(options);
3629
3630         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3631         SET_BITVAL(conn->hdrdgst_en, options, BIT_13);
3632         SET_BITVAL(conn->datadgst_en, options, BIT_12);
3633         SET_BITVAL(sess->imm_data_en, options, BIT_11);
3634         SET_BITVAL(sess->initial_r2t_en, options, BIT_10);
3635         SET_BITVAL(sess->dataseq_inorder_en, options, BIT_9);
3636         SET_BITVAL(sess->pdu_inorder_en, options, BIT_8);
3637         SET_BITVAL(sess->chap_auth_en, options, BIT_7);
3638         SET_BITVAL(conn->snack_req_en, options, BIT_6);
3639         SET_BITVAL(sess->discovery_logout_en, options, BIT_5);
3640         SET_BITVAL(sess->bidi_chap_en, options, BIT_4);
3641         SET_BITVAL(sess->discovery_auth_optional, options, BIT_3);
3642         SET_BITVAL(sess->erl & BIT_1, options, BIT_1);
3643         SET_BITVAL(sess->erl & BIT_0, options, BIT_0);
3644         fw_ddb_entry->iscsi_options = cpu_to_le16(options);
3645
3646         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3647         SET_BITVAL(conn->tcp_timestamp_stat, options, BIT_6);
3648         SET_BITVAL(conn->tcp_nagle_disable, options, BIT_5);
3649         SET_BITVAL(conn->tcp_wsf_disable, options, BIT_4);
3650         SET_BITVAL(conn->tcp_timer_scale & BIT_2, options, BIT_3);
3651         SET_BITVAL(conn->tcp_timer_scale & BIT_1, options, BIT_2);
3652         SET_BITVAL(conn->tcp_timer_scale & BIT_0, options, BIT_1);
3653         SET_BITVAL(conn->tcp_timestamp_en, options, BIT_0);
3654         fw_ddb_entry->tcp_options = cpu_to_le16(options);
3655
3656         options = le16_to_cpu(fw_ddb_entry->ip_options);
3657         SET_BITVAL(conn->fragment_disable, options, BIT_4);
3658         fw_ddb_entry->ip_options = cpu_to_le16(options);
3659
3660         fw_ddb_entry->iscsi_max_outsnd_r2t = cpu_to_le16(sess->max_r2t);
3661         fw_ddb_entry->iscsi_max_rcv_data_seg_len =
3662                                cpu_to_le16(conn->max_recv_dlength / BYTE_UNITS);
3663         fw_ddb_entry->iscsi_max_snd_data_seg_len =
3664                                cpu_to_le16(conn->max_xmit_dlength / BYTE_UNITS);
3665         fw_ddb_entry->iscsi_first_burst_len =
3666                                 cpu_to_le16(sess->first_burst / BYTE_UNITS);
3667         fw_ddb_entry->iscsi_max_burst_len = cpu_to_le16(sess->max_burst /
3668                                             BYTE_UNITS);
3669         fw_ddb_entry->iscsi_def_time2wait = cpu_to_le16(sess->time2wait);
3670         fw_ddb_entry->iscsi_def_time2retain = cpu_to_le16(sess->time2retain);
3671         fw_ddb_entry->tgt_portal_grp = cpu_to_le16(sess->tpgt);
3672         fw_ddb_entry->mss = cpu_to_le16(conn->max_segment_size);
3673         fw_ddb_entry->tcp_xmt_wsf = (uint8_t) cpu_to_le32(conn->tcp_xmit_wsf);
3674         fw_ddb_entry->tcp_rcv_wsf = (uint8_t) cpu_to_le32(conn->tcp_recv_wsf);
3675         fw_ddb_entry->ipv6_flow_lbl = cpu_to_le16(conn->ipv6_flow_label);
3676         fw_ddb_entry->ka_timeout = cpu_to_le16(conn->keepalive_timeout);
3677         fw_ddb_entry->lcl_port = cpu_to_le16(conn->local_port);
3678         fw_ddb_entry->stat_sn = cpu_to_le32(conn->statsn);
3679         fw_ddb_entry->exp_stat_sn = cpu_to_le32(conn->exp_statsn);
3680         fw_ddb_entry->ddb_link = cpu_to_le16(sess->discovery_parent_idx);
3681         fw_ddb_entry->chap_tbl_idx = cpu_to_le16(sess->chap_out_idx);
3682         fw_ddb_entry->tsid = cpu_to_le16(sess->tsid);
3683         fw_ddb_entry->port = cpu_to_le16(conn->port);
3684         fw_ddb_entry->def_timeout =
3685                                 cpu_to_le16(sess->default_taskmgmt_timeout);
3686
3687         if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
3688                 fw_ddb_entry->ipv4_tos = conn->ipv6_traffic_class;
3689         else
3690                 fw_ddb_entry->ipv4_tos = conn->ipv4_tos;
3691
3692         if (conn->ipaddress)
3693                 memcpy(fw_ddb_entry->ip_addr, conn->ipaddress,
3694                        sizeof(fw_ddb_entry->ip_addr));
3695
3696         if (conn->redirect_ipaddr)
3697                 memcpy(fw_ddb_entry->tgt_addr, conn->redirect_ipaddr,
3698                        sizeof(fw_ddb_entry->tgt_addr));
3699
3700         if (conn->link_local_ipv6_addr)
3701                 memcpy(fw_ddb_entry->link_local_ipv6_addr,
3702                        conn->link_local_ipv6_addr,
3703                        sizeof(fw_ddb_entry->link_local_ipv6_addr));
3704
3705         if (sess->targetname)
3706                 memcpy(fw_ddb_entry->iscsi_name, sess->targetname,
3707                        sizeof(fw_ddb_entry->iscsi_name));
3708
3709         if (sess->targetalias)
3710                 memcpy(fw_ddb_entry->iscsi_alias, sess->targetalias,
3711                        sizeof(fw_ddb_entry->iscsi_alias));
3712
3713         COPY_ISID(fw_ddb_entry->isid, sess->isid);
3714
3715         return rc;
3716 }
3717
3718 static void qla4xxx_copy_to_sess_conn_params(struct iscsi_conn *conn,
3719                                              struct iscsi_session *sess,
3720                                              struct dev_db_entry *fw_ddb_entry)
3721 {
3722         unsigned long options = 0;
3723         uint16_t ddb_link;
3724         uint16_t disc_parent;
3725         char ip_addr[DDB_IPADDR_LEN];
3726
3727         options = le16_to_cpu(fw_ddb_entry->options);
3728         conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
3729         sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
3730                                               &options);
3731         sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
3732
3733         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3734         conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
3735         conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
3736         sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
3737         sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
3738         sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
3739                                             &options);
3740         sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
3741         sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
3742         sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
3743                                              &options);
3744         sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
3745         sess->discovery_auth_optional =
3746                         test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
3747         if (test_bit(ISCSIOPT_ERL1, &options))
3748                 sess->erl |= BIT_1;
3749         if (test_bit(ISCSIOPT_ERL0, &options))
3750                 sess->erl |= BIT_0;
3751
3752         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3753         conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
3754         conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
3755         conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
3756         if (test_bit(TCPOPT_TIMER_SCALE3, &options))
3757                 conn->tcp_timer_scale |= BIT_3;
3758         if (test_bit(TCPOPT_TIMER_SCALE2, &options))
3759                 conn->tcp_timer_scale |= BIT_2;
3760         if (test_bit(TCPOPT_TIMER_SCALE1, &options))
3761                 conn->tcp_timer_scale |= BIT_1;
3762
3763         conn->tcp_timer_scale >>= 1;
3764         conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
3765
3766         options = le16_to_cpu(fw_ddb_entry->ip_options);
3767         conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
3768
3769         conn->max_recv_dlength = BYTE_UNITS *
3770                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
3771         conn->max_xmit_dlength = BYTE_UNITS *
3772                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
3773         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
3774         sess->first_burst = BYTE_UNITS *
3775                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
3776         sess->max_burst = BYTE_UNITS *
3777                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
3778         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3779         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
3780         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
3781         conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
3782         conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
3783         conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
3784         conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
3785         conn->keepalive_tmo = le16_to_cpu(fw_ddb_entry->ka_timeout);
3786         conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
3787         conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
3788         conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
3789         sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
3790         COPY_ISID(sess->isid, fw_ddb_entry->isid);
3791
3792         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
3793         if (ddb_link == DDB_ISNS)
3794                 disc_parent = ISCSI_DISC_PARENT_ISNS;
3795         else if (ddb_link == DDB_NO_LINK)
3796                 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
3797         else if (ddb_link < MAX_DDB_ENTRIES)
3798                 disc_parent = ISCSI_DISC_PARENT_SENDTGT;
3799         else
3800                 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
3801
3802         iscsi_set_param(conn->cls_conn, ISCSI_PARAM_DISCOVERY_PARENT_TYPE,
3803                         iscsi_get_discovery_parent_name(disc_parent), 0);
3804
3805         iscsi_set_param(conn->cls_conn, ISCSI_PARAM_TARGET_ALIAS,
3806                         (char *)fw_ddb_entry->iscsi_alias, 0);
3807
3808         options = le16_to_cpu(fw_ddb_entry->options);
3809         if (options & DDB_OPT_IPV6_DEVICE) {
3810                 memset(ip_addr, 0, sizeof(ip_addr));
3811                 sprintf(ip_addr, "%pI6", fw_ddb_entry->link_local_ipv6_addr);
3812                 iscsi_set_param(conn->cls_conn, ISCSI_PARAM_LOCAL_IPADDR,
3813                                 (char *)ip_addr, 0);
3814         }
3815 }
3816
3817 static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
3818                                      struct dev_db_entry *fw_ddb_entry,
3819                                      struct iscsi_cls_session *cls_sess,
3820                                      struct iscsi_cls_conn *cls_conn)
3821 {
3822         int buflen = 0;
3823         struct iscsi_session *sess;
3824         struct ddb_entry *ddb_entry;
3825         struct ql4_chap_table chap_tbl;
3826         struct iscsi_conn *conn;
3827         char ip_addr[DDB_IPADDR_LEN];
3828         uint16_t options = 0;
3829
3830         sess = cls_sess->dd_data;
3831         ddb_entry = sess->dd_data;
3832         conn = cls_conn->dd_data;
3833         memset(&chap_tbl, 0, sizeof(chap_tbl));
3834
3835         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3836
3837         qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
3838
3839         sess->def_taskmgmt_tmo = le16_to_cpu(fw_ddb_entry->def_timeout);
3840         conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
3841
3842         memset(ip_addr, 0, sizeof(ip_addr));
3843         options = le16_to_cpu(fw_ddb_entry->options);
3844         if (options & DDB_OPT_IPV6_DEVICE) {
3845                 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv6", 4);
3846
3847                 memset(ip_addr, 0, sizeof(ip_addr));
3848                 sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
3849         } else {
3850                 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv4", 4);
3851                 sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
3852         }
3853
3854         iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
3855                         (char *)ip_addr, buflen);
3856         iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
3857                         (char *)fw_ddb_entry->iscsi_name, buflen);
3858         iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
3859                         (char *)ha->name_string, buflen);
3860
3861         if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
3862                 if (!qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
3863                                                    chap_tbl.secret,
3864                                                    ddb_entry->chap_tbl_idx)) {
3865                         iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
3866                                         (char *)chap_tbl.name,
3867                                         strlen((char *)chap_tbl.name));
3868                         iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
3869                                         (char *)chap_tbl.secret,
3870                                         chap_tbl.secret_len);
3871                 }
3872         }
3873 }
3874
3875 void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
3876                                              struct ddb_entry *ddb_entry)
3877 {
3878         struct iscsi_cls_session *cls_sess;
3879         struct iscsi_cls_conn *cls_conn;
3880         uint32_t ddb_state;
3881         dma_addr_t fw_ddb_entry_dma;
3882         struct dev_db_entry *fw_ddb_entry;
3883
3884         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3885                                           &fw_ddb_entry_dma, GFP_KERNEL);
3886         if (!fw_ddb_entry) {
3887                 ql4_printk(KERN_ERR, ha,
3888                            "%s: Unable to allocate dma buffer\n", __func__);
3889                 goto exit_session_conn_fwddb_param;
3890         }
3891
3892         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
3893                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
3894                                     NULL, NULL, NULL) == QLA_ERROR) {
3895                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
3896                                   "get_ddb_entry for fw_ddb_index %d\n",
3897                                   ha->host_no, __func__,
3898                                   ddb_entry->fw_ddb_index));
3899                 goto exit_session_conn_fwddb_param;
3900         }
3901
3902         cls_sess = ddb_entry->sess;
3903
3904         cls_conn = ddb_entry->conn;
3905
3906         /* Update params */
3907         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
3908
3909 exit_session_conn_fwddb_param:
3910         if (fw_ddb_entry)
3911                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3912                                   fw_ddb_entry, fw_ddb_entry_dma);
3913 }
3914
3915 void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
3916                                        struct ddb_entry *ddb_entry)
3917 {
3918         struct iscsi_cls_session *cls_sess;
3919         struct iscsi_cls_conn *cls_conn;
3920         struct iscsi_session *sess;
3921         struct iscsi_conn *conn;
3922         uint32_t ddb_state;
3923         dma_addr_t fw_ddb_entry_dma;
3924         struct dev_db_entry *fw_ddb_entry;
3925
3926         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3927                                           &fw_ddb_entry_dma, GFP_KERNEL);
3928         if (!fw_ddb_entry) {
3929                 ql4_printk(KERN_ERR, ha,
3930                            "%s: Unable to allocate dma buffer\n", __func__);
3931                 goto exit_session_conn_param;
3932         }
3933
3934         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
3935                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
3936                                     NULL, NULL, NULL) == QLA_ERROR) {
3937                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
3938                                   "get_ddb_entry for fw_ddb_index %d\n",
3939                                   ha->host_no, __func__,
3940                                   ddb_entry->fw_ddb_index));
3941                 goto exit_session_conn_param;
3942         }
3943
3944         cls_sess = ddb_entry->sess;
3945         sess = cls_sess->dd_data;
3946
3947         cls_conn = ddb_entry->conn;
3948         conn = cls_conn->dd_data;
3949
3950         /* Update timers after login */
3951         ddb_entry->default_relogin_timeout =
3952                 (le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
3953                  (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
3954                  le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
3955         ddb_entry->default_time2wait =
3956                                 le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3957
3958         /* Update params */
3959         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3960         qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
3961
3962         memcpy(sess->initiatorname, ha->name_string,
3963                min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
3964
3965 exit_session_conn_param:
3966         if (fw_ddb_entry)
3967                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3968                                   fw_ddb_entry, fw_ddb_entry_dma);
3969 }
3970
3971 /*
3972  * Timer routines
3973  */
3974 static void qla4xxx_timer(struct timer_list *t);
3975
3976 static void qla4xxx_start_timer(struct scsi_qla_host *ha,
3977                                 unsigned long interval)
3978 {
3979         DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
3980                      __func__, ha->host->host_no));
3981         timer_setup(&ha->timer, qla4xxx_timer, 0);
3982         ha->timer.expires = jiffies + interval * HZ;
3983         add_timer(&ha->timer);
3984         ha->timer_active = 1;
3985 }
3986
3987 static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
3988 {
3989         del_timer_sync(&ha->timer);
3990         ha->timer_active = 0;
3991 }
3992
3993 /***
3994  * qla4xxx_mark_device_missing - blocks the session
3995  * @cls_session: Pointer to the session to be blocked
3996  * @ddb_entry: Pointer to device database entry
3997  *
3998  * This routine marks a device missing and close connection.
3999  **/
4000 void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
4001 {
4002         iscsi_block_session(cls_session);
4003 }
4004
4005 /**
4006  * qla4xxx_mark_all_devices_missing - mark all devices as missing.
4007  * @ha: Pointer to host adapter structure.
4008  *
4009  * This routine marks a device missing and resets the relogin retry count.
4010  **/
4011 void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
4012 {
4013         iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
4014 }
4015
4016 static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
4017                                        struct ddb_entry *ddb_entry,
4018                                        struct scsi_cmnd *cmd)
4019 {
4020         struct srb *srb;
4021
4022         srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
4023         if (!srb)
4024                 return srb;
4025
4026         kref_init(&srb->srb_ref);
4027         srb->ha = ha;
4028         srb->ddb = ddb_entry;
4029         srb->cmd = cmd;
4030         srb->flags = 0;
4031         CMD_SP(cmd) = (void *)srb;
4032
4033         return srb;
4034 }
4035
4036 static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
4037 {
4038         struct scsi_cmnd *cmd = srb->cmd;
4039
4040         if (srb->flags & SRB_DMA_VALID) {
4041                 scsi_dma_unmap(cmd);
4042                 srb->flags &= ~SRB_DMA_VALID;
4043         }
4044         CMD_SP(cmd) = NULL;
4045 }
4046
4047 void qla4xxx_srb_compl(struct kref *ref)
4048 {
4049         struct srb *srb = container_of(ref, struct srb, srb_ref);
4050         struct scsi_cmnd *cmd = srb->cmd;
4051         struct scsi_qla_host *ha = srb->ha;
4052
4053         qla4xxx_srb_free_dma(ha, srb);
4054
4055         mempool_free(srb, ha->srb_mempool);
4056
4057         cmd->scsi_done(cmd);
4058 }
4059
4060 /**
4061  * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
4062  * @host: scsi host
4063  * @cmd: Pointer to Linux's SCSI command structure
4064  *
4065  * Remarks:
4066  * This routine is invoked by Linux to send a SCSI command to the driver.
4067  * The mid-level driver tries to ensure that queuecommand never gets
4068  * invoked concurrently with itself or the interrupt handler (although
4069  * the interrupt handler may call this routine as part of request-
4070  * completion handling).   Unfortunely, it sometimes calls the scheduler
4071  * in interrupt context which is a big NO! NO!.
4072  **/
4073 static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
4074 {
4075         struct scsi_qla_host *ha = to_qla_host(host);
4076         struct ddb_entry *ddb_entry = cmd->device->hostdata;
4077         struct iscsi_cls_session *sess = ddb_entry->sess;
4078         struct srb *srb;
4079         int rval;
4080
4081         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
4082                 if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
4083                         cmd->result = DID_NO_CONNECT << 16;
4084                 else
4085                         cmd->result = DID_REQUEUE << 16;
4086                 goto qc_fail_command;
4087         }
4088
4089         if (!sess) {
4090                 cmd->result = DID_IMM_RETRY << 16;
4091                 goto qc_fail_command;
4092         }
4093
4094         rval = iscsi_session_chkready(sess);
4095         if (rval) {
4096                 cmd->result = rval;
4097                 goto qc_fail_command;
4098         }
4099
4100         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
4101             test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
4102             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4103             test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
4104             test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
4105             !test_bit(AF_ONLINE, &ha->flags) ||
4106             !test_bit(AF_LINK_UP, &ha->flags) ||
4107             test_bit(AF_LOOPBACK, &ha->flags) ||
4108             test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags) ||
4109             test_bit(DPC_RESTORE_ACB, &ha->dpc_flags) ||
4110             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
4111                 goto qc_host_busy;
4112
4113         srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
4114         if (!srb)
4115                 goto qc_host_busy;
4116
4117         rval = qla4xxx_send_command_to_isp(ha, srb);
4118         if (rval != QLA_SUCCESS)
4119                 goto qc_host_busy_free_sp;
4120
4121         return 0;
4122
4123 qc_host_busy_free_sp:
4124         qla4xxx_srb_free_dma(ha, srb);
4125         mempool_free(srb, ha->srb_mempool);
4126
4127 qc_host_busy:
4128         return SCSI_MLQUEUE_HOST_BUSY;
4129
4130 qc_fail_command:
4131         cmd->scsi_done(cmd);
4132
4133         return 0;
4134 }
4135
4136 /**
4137  * qla4xxx_mem_free - frees memory allocated to adapter
4138  * @ha: Pointer to host adapter structure.
4139  *
4140  * Frees memory previously allocated by qla4xxx_mem_alloc
4141  **/
4142 static void qla4xxx_mem_free(struct scsi_qla_host *ha)
4143 {
4144         if (ha->queues)
4145                 dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
4146                                   ha->queues_dma);
4147
4148         if (ha->fw_dump)
4149                 vfree(ha->fw_dump);
4150
4151         ha->queues_len = 0;
4152         ha->queues = NULL;
4153         ha->queues_dma = 0;
4154         ha->request_ring = NULL;
4155         ha->request_dma = 0;
4156         ha->response_ring = NULL;
4157         ha->response_dma = 0;
4158         ha->shadow_regs = NULL;
4159         ha->shadow_regs_dma = 0;
4160         ha->fw_dump = NULL;
4161         ha->fw_dump_size = 0;
4162
4163         /* Free srb pool. */
4164         mempool_destroy(ha->srb_mempool);
4165         ha->srb_mempool = NULL;
4166
4167         dma_pool_destroy(ha->chap_dma_pool);
4168
4169         if (ha->chap_list)
4170                 vfree(ha->chap_list);
4171         ha->chap_list = NULL;
4172
4173         dma_pool_destroy(ha->fw_ddb_dma_pool);
4174
4175         /* release io space registers  */
4176         if (is_qla8022(ha)) {
4177                 if (ha->nx_pcibase)
4178                         iounmap(
4179                             (struct device_reg_82xx __iomem *)ha->nx_pcibase);
4180         } else if (is_qla8032(ha) || is_qla8042(ha)) {
4181                 if (ha->nx_pcibase)
4182                         iounmap(
4183                             (struct device_reg_83xx __iomem *)ha->nx_pcibase);
4184         } else if (ha->reg) {
4185                 iounmap(ha->reg);
4186         }
4187
4188         if (ha->reset_tmplt.buff)
4189                 vfree(ha->reset_tmplt.buff);
4190
4191         pci_release_regions(ha->pdev);
4192 }
4193
4194 /**
4195  * qla4xxx_mem_alloc - allocates memory for use by adapter.
4196  * @ha: Pointer to host adapter structure
4197  *
4198  * Allocates DMA memory for request and response queues. Also allocates memory
4199  * for srbs.
4200  **/
4201 static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
4202 {
4203         unsigned long align;
4204
4205         /* Allocate contiguous block of DMA memory for queues. */
4206         ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
4207                           (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
4208                           sizeof(struct shadow_regs) +
4209                           MEM_ALIGN_VALUE +
4210                           (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
4211         ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
4212                                         &ha->queues_dma, GFP_KERNEL);
4213         if (ha->queues == NULL) {
4214                 ql4_printk(KERN_WARNING, ha,
4215                     "Memory Allocation failed - queues.\n");
4216
4217                 goto mem_alloc_error_exit;
4218         }
4219
4220         /*
4221          * As per RISC alignment requirements -- the bus-address must be a
4222          * multiple of the request-ring size (in bytes).
4223          */
4224         align = 0;
4225         if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
4226                 align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
4227                                            (MEM_ALIGN_VALUE - 1));
4228
4229         /* Update request and response queue pointers. */
4230         ha->request_dma = ha->queues_dma + align;
4231         ha->request_ring = (struct queue_entry *) (ha->queues + align);
4232         ha->response_dma = ha->queues_dma + align +
4233                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
4234         ha->response_ring = (struct queue_entry *) (ha->queues + align +
4235                                                     (REQUEST_QUEUE_DEPTH *
4236                                                      QUEUE_SIZE));
4237         ha->shadow_regs_dma = ha->queues_dma + align +
4238                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
4239                 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
4240         ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
4241                                                   (REQUEST_QUEUE_DEPTH *
4242                                                    QUEUE_SIZE) +
4243                                                   (RESPONSE_QUEUE_DEPTH *
4244                                                    QUEUE_SIZE));
4245
4246         /* Allocate memory for srb pool. */
4247         ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
4248                                          mempool_free_slab, srb_cachep);
4249         if (ha->srb_mempool == NULL) {
4250                 ql4_printk(KERN_WARNING, ha,
4251                     "Memory Allocation failed - SRB Pool.\n");
4252
4253                 goto mem_alloc_error_exit;
4254         }
4255
4256         ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
4257                                             CHAP_DMA_BLOCK_SIZE, 8, 0);
4258
4259         if (ha->chap_dma_pool == NULL) {
4260                 ql4_printk(KERN_WARNING, ha,
4261                     "%s: chap_dma_pool allocation failed..\n", __func__);
4262                 goto mem_alloc_error_exit;
4263         }
4264
4265         ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
4266                                               DDB_DMA_BLOCK_SIZE, 8, 0);
4267
4268         if (ha->fw_ddb_dma_pool == NULL) {
4269                 ql4_printk(KERN_WARNING, ha,
4270                            "%s: fw_ddb_dma_pool allocation failed..\n",
4271                            __func__);
4272                 goto mem_alloc_error_exit;
4273         }
4274
4275         return QLA_SUCCESS;
4276
4277 mem_alloc_error_exit:
4278         return QLA_ERROR;
4279 }
4280
4281 /**
4282  * qla4_8xxx_check_temp - Check the ISP82XX temperature.
4283  * @ha: adapter block pointer.
4284  *
4285  * Note: The caller should not hold the idc lock.
4286  **/
4287 static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
4288 {
4289         uint32_t temp, temp_state, temp_val;
4290         int status = QLA_SUCCESS;
4291
4292         temp = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_TEMP_STATE);
4293
4294         temp_state = qla82xx_get_temp_state(temp);
4295         temp_val = qla82xx_get_temp_val(temp);
4296
4297         if (temp_state == QLA82XX_TEMP_PANIC) {
4298                 ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
4299                            " exceeds maximum allowed. Hardware has been shut"
4300                            " down.\n", temp_val);
4301                 status = QLA_ERROR;
4302         } else if (temp_state == QLA82XX_TEMP_WARN) {
4303                 if (ha->temperature == QLA82XX_TEMP_NORMAL)
4304                         ql4_printk(KERN_WARNING, ha, "Device temperature %d"
4305                                    " degrees C exceeds operating range."
4306                                    " Immediate action needed.\n", temp_val);
4307         } else {
4308                 if (ha->temperature == QLA82XX_TEMP_WARN)
4309                         ql4_printk(KERN_INFO, ha, "Device temperature is"
4310                                    " now %d degrees C in normal range.\n",
4311                                    temp_val);
4312         }
4313         ha->temperature = temp_state;
4314         return status;
4315 }
4316
4317 /**
4318  * qla4_8xxx_check_fw_alive  - Check firmware health
4319  * @ha: Pointer to host adapter structure.
4320  *
4321  * Context: Interrupt
4322  **/
4323 static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
4324 {
4325         uint32_t fw_heartbeat_counter;
4326         int status = QLA_SUCCESS;
4327
4328         fw_heartbeat_counter = qla4_8xxx_rd_direct(ha,
4329                                                    QLA8XXX_PEG_ALIVE_COUNTER);
4330         /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
4331         if (fw_heartbeat_counter == 0xffffffff) {
4332                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
4333                     "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
4334                     ha->host_no, __func__));
4335                 return status;
4336         }
4337
4338         if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
4339                 ha->seconds_since_last_heartbeat++;
4340                 /* FW not alive after 2 seconds */
4341                 if (ha->seconds_since_last_heartbeat == 2) {
4342                         ha->seconds_since_last_heartbeat = 0;
4343                         qla4_8xxx_dump_peg_reg(ha);
4344                         status = QLA_ERROR;
4345                 }
4346         } else
4347                 ha->seconds_since_last_heartbeat = 0;
4348
4349         ha->fw_heartbeat_counter = fw_heartbeat_counter;
4350         return status;
4351 }
4352
4353 static void qla4_8xxx_process_fw_error(struct scsi_qla_host *ha)
4354 {
4355         uint32_t halt_status;
4356         int halt_status_unrecoverable = 0;
4357
4358         halt_status = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_HALT_STATUS1);
4359
4360         if (is_qla8022(ha)) {
4361                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
4362                            __func__);
4363                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
4364                                 CRB_NIU_XG_PAUSE_CTL_P0 |
4365                                 CRB_NIU_XG_PAUSE_CTL_P1);
4366
4367                 if (QLA82XX_FWERROR_CODE(halt_status) == 0x67)
4368                         ql4_printk(KERN_ERR, ha, "%s: Firmware aborted with error code 0x00006700. Device is being reset\n",
4369                                    __func__);
4370                 if (halt_status & HALT_STATUS_UNRECOVERABLE)
4371                         halt_status_unrecoverable = 1;
4372         } else if (is_qla8032(ha) || is_qla8042(ha)) {
4373                 if (halt_status & QLA83XX_HALT_STATUS_FW_RESET)
4374                         ql4_printk(KERN_ERR, ha, "%s: Firmware error detected device is being reset\n",
4375                                    __func__);
4376                 else if (halt_status & QLA83XX_HALT_STATUS_UNRECOVERABLE)
4377                         halt_status_unrecoverable = 1;
4378         }
4379
4380         /*
4381          * Since we cannot change dev_state in interrupt context,
4382          * set appropriate DPC flag then wakeup DPC
4383          */
4384         if (halt_status_unrecoverable) {
4385                 set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
4386         } else {
4387                 ql4_printk(KERN_INFO, ha, "%s: detect abort needed!\n",
4388                            __func__);
4389                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4390         }
4391         qla4xxx_mailbox_premature_completion(ha);
4392         qla4xxx_wake_dpc(ha);
4393 }
4394
4395 /**
4396  * qla4_8xxx_watchdog - Poll dev state
4397  * @ha: Pointer to host adapter structure.
4398  *
4399  * Context: Interrupt
4400  **/
4401 void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
4402 {
4403         uint32_t dev_state;
4404         uint32_t idc_ctrl;
4405
4406         if (is_qla8032(ha) &&
4407             (qla4_83xx_is_detached(ha) == QLA_SUCCESS))
4408                 WARN_ONCE(1, "%s: iSCSI function %d marked invisible\n",
4409                           __func__, ha->func_num);
4410
4411         /* don't poll if reset is going on */
4412         if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
4413             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4414             test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
4415                 dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
4416
4417                 if (qla4_8xxx_check_temp(ha)) {
4418                         if (is_qla8022(ha)) {
4419                                 ql4_printk(KERN_INFO, ha, "disabling pause transmit on port 0 & 1.\n");
4420                                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
4421                                                 CRB_NIU_XG_PAUSE_CTL_P0 |
4422                                                 CRB_NIU_XG_PAUSE_CTL_P1);
4423                         }
4424                         set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
4425                         qla4xxx_wake_dpc(ha);
4426                 } else if (dev_state == QLA8XXX_DEV_NEED_RESET &&
4427                            !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
4428
4429                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED RESET!\n",
4430                                    __func__);
4431
4432                         if (is_qla8032(ha) || is_qla8042(ha)) {
4433                                 idc_ctrl = qla4_83xx_rd_reg(ha,
4434                                                         QLA83XX_IDC_DRV_CTRL);
4435                                 if (!(idc_ctrl & GRACEFUL_RESET_BIT1)) {
4436                                         ql4_printk(KERN_INFO, ha, "%s: Graceful reset bit is not set\n",
4437                                                    __func__);
4438                                         qla4xxx_mailbox_premature_completion(
4439                                                                             ha);
4440                                 }
4441                         }
4442
4443                         if ((is_qla8032(ha) || is_qla8042(ha)) ||
4444                             (is_qla8022(ha) && !ql4xdontresethba)) {
4445                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4446                                 qla4xxx_wake_dpc(ha);
4447                         }
4448                 } else if (dev_state == QLA8XXX_DEV_NEED_QUIESCENT &&
4449                     !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
4450                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
4451                             __func__);
4452                         set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
4453                         qla4xxx_wake_dpc(ha);
4454                 } else  {
4455                         /* Check firmware health */
4456                         if (qla4_8xxx_check_fw_alive(ha))
4457                                 qla4_8xxx_process_fw_error(ha);
4458                 }
4459         }
4460 }
4461
4462 static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
4463 {
4464         struct iscsi_session *sess;
4465         struct ddb_entry *ddb_entry;
4466         struct scsi_qla_host *ha;
4467
4468         sess = cls_sess->dd_data;
4469         ddb_entry = sess->dd_data;
4470         ha = ddb_entry->ha;
4471
4472         if (!(ddb_entry->ddb_type == FLASH_DDB))
4473                 return;
4474
4475         if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
4476             !iscsi_is_session_online(cls_sess)) {
4477                 if (atomic_read(&ddb_entry->retry_relogin_timer) !=
4478                     INVALID_ENTRY) {
4479                         if (atomic_read(&ddb_entry->retry_relogin_timer) ==
4480                                         0) {
4481                                 atomic_set(&ddb_entry->retry_relogin_timer,
4482                                            INVALID_ENTRY);
4483                                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4484                                 set_bit(DF_RELOGIN, &ddb_entry->flags);
4485                                 DEBUG2(ql4_printk(KERN_INFO, ha,
4486                                        "%s: index [%d] login device\n",
4487                                         __func__, ddb_entry->fw_ddb_index));
4488                         } else
4489                                 atomic_dec(&ddb_entry->retry_relogin_timer);
4490                 }
4491         }
4492
4493         /* Wait for relogin to timeout */
4494         if (atomic_read(&ddb_entry->relogin_timer) &&
4495             (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
4496                 /*
4497                  * If the relogin times out and the device is
4498                  * still NOT ONLINE then try and relogin again.
4499                  */
4500                 if (!iscsi_is_session_online(cls_sess)) {
4501                         /* Reset retry relogin timer */
4502                         atomic_inc(&ddb_entry->relogin_retry_count);
4503                         DEBUG2(ql4_printk(KERN_INFO, ha,
4504                                 "%s: index[%d] relogin timed out-retrying"
4505                                 " relogin (%d), retry (%d)\n", __func__,
4506                                 ddb_entry->fw_ddb_index,
4507                                 atomic_read(&ddb_entry->relogin_retry_count),
4508                                 ddb_entry->default_time2wait + 4));
4509                         set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4510                         atomic_set(&ddb_entry->retry_relogin_timer,
4511                                    ddb_entry->default_time2wait + 4);
4512                 }
4513         }
4514 }
4515
4516 /**
4517  * qla4xxx_timer - checks every second for work to do.
4518  * @ha: Pointer to host adapter structure.
4519  **/
4520 static void qla4xxx_timer(struct timer_list *t)
4521 {
4522         struct scsi_qla_host *ha = from_timer(ha, t, timer);
4523         int start_dpc = 0;
4524         uint16_t w;
4525
4526         iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
4527
4528         /* If we are in the middle of AER/EEH processing
4529          * skip any processing and reschedule the timer
4530          */
4531         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
4532                 mod_timer(&ha->timer, jiffies + HZ);
4533                 return;
4534         }
4535
4536         /* Hardware read to trigger an EEH error during mailbox waits. */
4537         if (!pci_channel_offline(ha->pdev))
4538                 pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
4539
4540         if (is_qla80XX(ha))
4541                 qla4_8xxx_watchdog(ha);
4542
4543         if (is_qla40XX(ha)) {
4544                 /* Check for heartbeat interval. */
4545                 if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
4546                     ha->heartbeat_interval != 0) {
4547                         ha->seconds_since_last_heartbeat++;
4548                         if (ha->seconds_since_last_heartbeat >
4549                             ha->heartbeat_interval + 2)
4550                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4551                 }
4552         }
4553
4554         /* Process any deferred work. */
4555         if (!list_empty(&ha->work_list))
4556                 start_dpc++;
4557
4558         /* Wakeup the dpc routine for this adapter, if needed. */
4559         if (start_dpc ||
4560              test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4561              test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
4562              test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
4563              test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
4564              test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
4565              test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
4566              test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
4567              test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
4568              test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
4569              test_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags) ||
4570              test_bit(DPC_AEN, &ha->dpc_flags)) {
4571                 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
4572                               " - dpc flags = 0x%lx\n",
4573                               ha->host_no, __func__, ha->dpc_flags));
4574                 qla4xxx_wake_dpc(ha);
4575         }
4576
4577         /* Reschedule timer thread to call us back in one second */
4578         mod_timer(&ha->timer, jiffies + HZ);
4579
4580         DEBUG2(ha->seconds_since_last_intr++);
4581 }
4582
4583 /**
4584  * qla4xxx_cmd_wait - waits for all outstanding commands to complete
4585  * @ha: Pointer to host adapter structure.
4586  *
4587  * This routine stalls the driver until all outstanding commands are returned.
4588  * Caller must release the Hardware Lock prior to calling this routine.
4589  **/
4590 static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
4591 {
4592         uint32_t index = 0;
4593         unsigned long flags;
4594         struct scsi_cmnd *cmd;
4595         unsigned long wtime;
4596         uint32_t wtmo;
4597
4598         if (is_qla40XX(ha))
4599                 wtmo = WAIT_CMD_TOV;
4600         else
4601                 wtmo = ha->nx_reset_timeout / 2;
4602
4603         wtime = jiffies + (wtmo * HZ);
4604
4605         DEBUG2(ql4_printk(KERN_INFO, ha,
4606                           "Wait up to %u seconds for cmds to complete\n",
4607                           wtmo));
4608
4609         while (!time_after_eq(jiffies, wtime)) {
4610                 spin_lock_irqsave(&ha->hardware_lock, flags);
4611                 /* Find a command that hasn't completed. */
4612                 for (index = 0; index < ha->host->can_queue; index++) {
4613                         cmd = scsi_host_find_tag(ha->host, index);
4614                         /*
4615                          * We cannot just check if the index is valid,
4616                          * becase if we are run from the scsi eh, then
4617                          * the scsi/block layer is going to prevent
4618                          * the tag from being released.
4619                          */
4620                         if (cmd != NULL && CMD_SP(cmd))
4621                                 break;
4622                 }
4623                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4624
4625                 /* If No Commands are pending, wait is complete */
4626                 if (index == ha->host->can_queue)
4627                         return QLA_SUCCESS;
4628
4629                 msleep(1000);
4630         }
4631         /* If we timed out on waiting for commands to come back
4632          * return ERROR. */
4633         return QLA_ERROR;
4634 }
4635
4636 int qla4xxx_hw_reset(struct scsi_qla_host *ha)
4637 {
4638         uint32_t ctrl_status;
4639         unsigned long flags = 0;
4640
4641         DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
4642
4643         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
4644                 return QLA_ERROR;
4645
4646         spin_lock_irqsave(&ha->hardware_lock, flags);
4647
4648         /*
4649          * If the SCSI Reset Interrupt bit is set, clear it.
4650          * Otherwise, the Soft Reset won't work.
4651          */
4652         ctrl_status = readw(&ha->reg->ctrl_status);
4653         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
4654                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
4655
4656         /* Issue Soft Reset */
4657         writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
4658         readl(&ha->reg->ctrl_status);
4659
4660         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4661         return QLA_SUCCESS;
4662 }
4663
4664 /**
4665  * qla4xxx_soft_reset - performs soft reset.
4666  * @ha: Pointer to host adapter structure.
4667  **/
4668 int qla4xxx_soft_reset(struct scsi_qla_host *ha)
4669 {
4670         uint32_t max_wait_time;
4671         unsigned long flags = 0;
4672         int status;
4673         uint32_t ctrl_status;
4674
4675         status = qla4xxx_hw_reset(ha);
4676         if (status != QLA_SUCCESS)
4677                 return status;
4678
4679         status = QLA_ERROR;
4680         /* Wait until the Network Reset Intr bit is cleared */
4681         max_wait_time = RESET_INTR_TOV;
4682         do {
4683                 spin_lock_irqsave(&ha->hardware_lock, flags);
4684                 ctrl_status = readw(&ha->reg->ctrl_status);
4685                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4686
4687                 if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
4688                         break;
4689
4690                 msleep(1000);
4691         } while ((--max_wait_time));
4692
4693         if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
4694                 DEBUG2(printk(KERN_WARNING
4695                               "scsi%ld: Network Reset Intr not cleared by "
4696                               "Network function, clearing it now!\n",
4697                               ha->host_no));
4698                 spin_lock_irqsave(&ha->hardware_lock, flags);
4699                 writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
4700                 readl(&ha->reg->ctrl_status);
4701                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4702         }
4703
4704         /* Wait until the firmware tells us the Soft Reset is done */
4705         max_wait_time = SOFT_RESET_TOV;
4706         do {
4707                 spin_lock_irqsave(&ha->hardware_lock, flags);
4708                 ctrl_status = readw(&ha->reg->ctrl_status);
4709                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4710
4711                 if ((ctrl_status & CSR_SOFT_RESET) == 0) {
4712                         status = QLA_SUCCESS;
4713                         break;
4714                 }
4715
4716                 msleep(1000);
4717         } while ((--max_wait_time));
4718
4719         /*
4720          * Also, make sure that the SCSI Reset Interrupt bit has been cleared
4721          * after the soft reset has taken place.
4722          */
4723         spin_lock_irqsave(&ha->hardware_lock, flags);
4724         ctrl_status = readw(&ha->reg->ctrl_status);
4725         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
4726                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
4727                 readl(&ha->reg->ctrl_status);
4728         }
4729         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4730
4731         /* If soft reset fails then most probably the bios on other
4732          * function is also enabled.
4733          * Since the initialization is sequential the other fn
4734          * wont be able to acknowledge the soft reset.
4735          * Issue a force soft reset to workaround this scenario.
4736          */
4737         if (max_wait_time == 0) {
4738                 /* Issue Force Soft Reset */
4739                 spin_lock_irqsave(&ha->hardware_lock, flags);
4740                 writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
4741                 readl(&ha->reg->ctrl_status);
4742                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4743                 /* Wait until the firmware tells us the Soft Reset is done */
4744                 max_wait_time = SOFT_RESET_TOV;
4745                 do {
4746                         spin_lock_irqsave(&ha->hardware_lock, flags);
4747                         ctrl_status = readw(&ha->reg->ctrl_status);
4748                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4749
4750                         if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
4751                                 status = QLA_SUCCESS;
4752                                 break;
4753                         }
4754
4755                         msleep(1000);
4756                 } while ((--max_wait_time));
4757         }
4758
4759         return status;
4760 }
4761
4762 /**
4763  * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
4764  * @ha: Pointer to host adapter structure.
4765  * @res: returned scsi status
4766  *
4767  * This routine is called just prior to a HARD RESET to return all
4768  * outstanding commands back to the Operating System.
4769  * Caller should make sure that the following locks are released
4770  * before this calling routine: Hardware lock, and io_request_lock.
4771  **/
4772 static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
4773 {
4774         struct srb *srb;
4775         int i;
4776         unsigned long flags;
4777
4778         spin_lock_irqsave(&ha->hardware_lock, flags);
4779         for (i = 0; i < ha->host->can_queue; i++) {
4780                 srb = qla4xxx_del_from_active_array(ha, i);
4781                 if (srb != NULL) {
4782                         srb->cmd->result = res;
4783                         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
4784                 }
4785         }
4786         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4787 }
4788
4789 void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
4790 {
4791         clear_bit(AF_ONLINE, &ha->flags);
4792
4793         /* Disable the board */
4794         ql4_printk(KERN_INFO, ha, "Disabling the board\n");
4795
4796         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
4797         qla4xxx_mark_all_devices_missing(ha);
4798         clear_bit(AF_INIT_DONE, &ha->flags);
4799 }
4800
4801 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
4802 {
4803         struct iscsi_session *sess;
4804         struct ddb_entry *ddb_entry;
4805
4806         sess = cls_session->dd_data;
4807         ddb_entry = sess->dd_data;
4808         ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
4809
4810         if (ddb_entry->ddb_type == FLASH_DDB)
4811                 iscsi_block_session(ddb_entry->sess);
4812         else
4813                 iscsi_session_failure(cls_session->dd_data,
4814                                       ISCSI_ERR_CONN_FAILED);
4815 }
4816
4817 /**
4818  * qla4xxx_recover_adapter - recovers adapter after a fatal error
4819  * @ha: Pointer to host adapter structure.
4820  **/
4821 static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
4822 {
4823         int status = QLA_ERROR;
4824         uint8_t reset_chip = 0;
4825         uint32_t dev_state;
4826         unsigned long wait;
4827
4828         /* Stall incoming I/O until we are done */
4829         scsi_block_requests(ha->host);
4830         clear_bit(AF_ONLINE, &ha->flags);
4831         clear_bit(AF_LINK_UP, &ha->flags);
4832
4833         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
4834
4835         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
4836
4837         if ((is_qla8032(ha) || is_qla8042(ha)) &&
4838             !test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
4839                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
4840                            __func__);
4841                 /* disable pause frame for ISP83xx */
4842                 qla4_83xx_disable_pause(ha);
4843         }
4844
4845         iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
4846
4847         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
4848                 reset_chip = 1;
4849
4850         /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
4851          * do not reset adapter, jump to initialize_adapter */
4852         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
4853                 status = QLA_SUCCESS;
4854                 goto recover_ha_init_adapter;
4855         }
4856
4857         /* For the ISP-8xxx adapter, issue a stop_firmware if invoked
4858          * from eh_host_reset or ioctl module */
4859         if (is_qla80XX(ha) && !reset_chip &&
4860             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
4861
4862                 DEBUG2(ql4_printk(KERN_INFO, ha,
4863                     "scsi%ld: %s - Performing stop_firmware...\n",
4864                     ha->host_no, __func__));
4865                 status = ha->isp_ops->reset_firmware(ha);
4866                 if (status == QLA_SUCCESS) {
4867                         ha->isp_ops->disable_intrs(ha);
4868                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4869                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
4870                 } else {
4871                         /* If the stop_firmware fails then
4872                          * reset the entire chip */
4873                         reset_chip = 1;
4874                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
4875                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
4876                 }
4877         }
4878
4879         /* Issue full chip reset if recovering from a catastrophic error,
4880          * or if stop_firmware fails for ISP-8xxx.
4881          * This is the default case for ISP-4xxx */
4882         if (is_qla40XX(ha) || reset_chip) {
4883                 if (is_qla40XX(ha))
4884                         goto chip_reset;
4885
4886                 /* Check if 8XXX firmware is alive or not
4887                  * We may have arrived here from NEED_RESET
4888                  * detection only */
4889                 if (test_bit(AF_FW_RECOVERY, &ha->flags))
4890                         goto chip_reset;
4891
4892                 wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
4893                 while (time_before(jiffies, wait)) {
4894                         if (qla4_8xxx_check_fw_alive(ha)) {
4895                                 qla4xxx_mailbox_premature_completion(ha);
4896                                 break;
4897                         }
4898
4899                         set_current_state(TASK_UNINTERRUPTIBLE);
4900                         schedule_timeout(HZ);
4901                 }
4902 chip_reset:
4903                 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
4904                         qla4xxx_cmd_wait(ha);
4905
4906                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4907                 DEBUG2(ql4_printk(KERN_INFO, ha,
4908                     "scsi%ld: %s - Performing chip reset..\n",
4909                     ha->host_no, __func__));
4910                 status = ha->isp_ops->reset_chip(ha);
4911                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
4912         }
4913
4914         /* Flush any pending ddb changed AENs */
4915         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4916
4917 recover_ha_init_adapter:
4918         /* Upon successful firmware/chip reset, re-initialize the adapter */
4919         if (status == QLA_SUCCESS) {
4920                 /* For ISP-4xxx, force function 1 to always initialize
4921                  * before function 3 to prevent both funcions from
4922                  * stepping on top of the other */
4923                 if (is_qla40XX(ha) && (ha->mac_index == 3))
4924                         ssleep(6);
4925
4926                 /* NOTE: AF_ONLINE flag set upon successful completion of
4927                  * qla4xxx_initialize_adapter */
4928                 status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
4929                 if (is_qla80XX(ha) && (status == QLA_ERROR)) {
4930                         status = qla4_8xxx_check_init_adapter_retry(ha);
4931                         if (status == QLA_ERROR) {
4932                                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Don't retry recover adapter\n",
4933                                            ha->host_no, __func__);
4934                                 qla4xxx_dead_adapter_cleanup(ha);
4935                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4936                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4937                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
4938                                           &ha->dpc_flags);
4939                                 goto exit_recover;
4940                         }
4941                 }
4942         }
4943
4944         /* Retry failed adapter initialization, if necessary
4945          * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
4946          * case to prevent ping-pong resets between functions */
4947         if (!test_bit(AF_ONLINE, &ha->flags) &&
4948             !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
4949                 /* Adapter initialization failed, see if we can retry
4950                  * resetting the ha.
4951                  * Since we don't want to block the DPC for too long
4952                  * with multiple resets in the same thread,
4953                  * utilize DPC to retry */
4954                 if (is_qla80XX(ha)) {
4955                         ha->isp_ops->idc_lock(ha);
4956                         dev_state = qla4_8xxx_rd_direct(ha,
4957                                                         QLA8XXX_CRB_DEV_STATE);
4958                         ha->isp_ops->idc_unlock(ha);
4959                         if (dev_state == QLA8XXX_DEV_FAILED) {
4960                                 ql4_printk(KERN_INFO, ha, "%s: don't retry "
4961                                            "recover adapter. H/W is in Failed "
4962                                            "state\n", __func__);
4963                                 qla4xxx_dead_adapter_cleanup(ha);
4964                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4965                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4966                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
4967                                                 &ha->dpc_flags);
4968                                 status = QLA_ERROR;
4969
4970                                 goto exit_recover;
4971                         }
4972                 }
4973
4974                 if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
4975                         ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
4976                         DEBUG2(printk("scsi%ld: recover adapter - retrying "
4977                                       "(%d) more times\n", ha->host_no,
4978                                       ha->retry_reset_ha_cnt));
4979                         set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4980                         status = QLA_ERROR;
4981                 } else {
4982                         if (ha->retry_reset_ha_cnt > 0) {
4983                                 /* Schedule another Reset HA--DPC will retry */
4984                                 ha->retry_reset_ha_cnt--;
4985                                 DEBUG2(printk("scsi%ld: recover adapter - "
4986                                               "retry remaining %d\n",
4987                                               ha->host_no,
4988                                               ha->retry_reset_ha_cnt));
4989                                 status = QLA_ERROR;
4990                         }
4991
4992                         if (ha->retry_reset_ha_cnt == 0) {
4993                                 /* Recover adapter retries have been exhausted.
4994                                  * Adapter DEAD */
4995                                 DEBUG2(printk("scsi%ld: recover adapter "
4996                                               "failed - board disabled\n",
4997                                               ha->host_no));
4998                                 qla4xxx_dead_adapter_cleanup(ha);
4999                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
5000                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5001                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
5002                                           &ha->dpc_flags);
5003                                 status = QLA_ERROR;
5004                         }
5005                 }
5006         } else {
5007                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5008                 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5009                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
5010         }
5011
5012 exit_recover:
5013         ha->adapter_error_count++;
5014
5015         if (test_bit(AF_ONLINE, &ha->flags))
5016                 ha->isp_ops->enable_intrs(ha);
5017
5018         scsi_unblock_requests(ha->host);
5019
5020         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
5021         DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
5022             status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
5023
5024         return status;
5025 }
5026
5027 static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
5028 {
5029         struct iscsi_session *sess;
5030         struct ddb_entry *ddb_entry;
5031         struct scsi_qla_host *ha;
5032
5033         sess = cls_session->dd_data;
5034         ddb_entry = sess->dd_data;
5035         ha = ddb_entry->ha;
5036         if (!iscsi_is_session_online(cls_session)) {
5037                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
5038                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5039                                    " unblock session\n", ha->host_no, __func__,
5040                                    ddb_entry->fw_ddb_index);
5041                         iscsi_unblock_session(ddb_entry->sess);
5042                 } else {
5043                         /* Trigger relogin */
5044                         if (ddb_entry->ddb_type == FLASH_DDB) {
5045                                 if (!(test_bit(DF_RELOGIN, &ddb_entry->flags) ||
5046                                       test_bit(DF_DISABLE_RELOGIN,
5047                                                &ddb_entry->flags)))
5048                                         qla4xxx_arm_relogin_timer(ddb_entry);
5049                         } else
5050                                 iscsi_session_failure(cls_session->dd_data,
5051                                                       ISCSI_ERR_CONN_FAILED);
5052                 }
5053         }
5054 }
5055
5056 int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
5057 {
5058         struct iscsi_session *sess;
5059         struct ddb_entry *ddb_entry;
5060         struct scsi_qla_host *ha;
5061
5062         sess = cls_session->dd_data;
5063         ddb_entry = sess->dd_data;
5064         ha = ddb_entry->ha;
5065         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5066                    " unblock session\n", ha->host_no, __func__,
5067                    ddb_entry->fw_ddb_index);
5068
5069         iscsi_unblock_session(ddb_entry->sess);
5070
5071         /* Start scan target */
5072         if (test_bit(AF_ONLINE, &ha->flags)) {
5073                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5074                            " start scan\n", ha->host_no, __func__,
5075                            ddb_entry->fw_ddb_index);
5076                 scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
5077         }
5078         return QLA_SUCCESS;
5079 }
5080
5081 int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
5082 {
5083         struct iscsi_session *sess;
5084         struct ddb_entry *ddb_entry;
5085         struct scsi_qla_host *ha;
5086         int status = QLA_SUCCESS;
5087
5088         sess = cls_session->dd_data;
5089         ddb_entry = sess->dd_data;
5090         ha = ddb_entry->ha;
5091         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5092                    " unblock user space session\n", ha->host_no, __func__,
5093                    ddb_entry->fw_ddb_index);
5094
5095         if (!iscsi_is_session_online(cls_session)) {
5096                 iscsi_conn_start(ddb_entry->conn);
5097                 iscsi_conn_login_event(ddb_entry->conn,
5098                                        ISCSI_CONN_STATE_LOGGED_IN);
5099         } else {
5100                 ql4_printk(KERN_INFO, ha,
5101                            "scsi%ld: %s: ddb[%d] session [%d] already logged in\n",
5102                            ha->host_no, __func__, ddb_entry->fw_ddb_index,
5103                            cls_session->sid);
5104                 status = QLA_ERROR;
5105         }
5106
5107         return status;
5108 }
5109
5110 static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
5111 {
5112         iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
5113 }
5114
5115 static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
5116 {
5117         uint16_t relogin_timer;
5118         struct iscsi_session *sess;
5119         struct ddb_entry *ddb_entry;
5120         struct scsi_qla_host *ha;
5121
5122         sess = cls_sess->dd_data;
5123         ddb_entry = sess->dd_data;
5124         ha = ddb_entry->ha;
5125
5126         relogin_timer = max(ddb_entry->default_relogin_timeout,
5127                             (uint16_t)RELOGIN_TOV);
5128         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
5129
5130         DEBUG2(ql4_printk(KERN_INFO, ha,
5131                           "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
5132                           ddb_entry->fw_ddb_index, relogin_timer));
5133
5134         qla4xxx_login_flash_ddb(cls_sess);
5135 }
5136
5137 static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
5138 {
5139         struct iscsi_session *sess;
5140         struct ddb_entry *ddb_entry;
5141         struct scsi_qla_host *ha;
5142
5143         sess = cls_sess->dd_data;
5144         ddb_entry = sess->dd_data;
5145         ha = ddb_entry->ha;
5146
5147         if (!(ddb_entry->ddb_type == FLASH_DDB))
5148                 return;
5149
5150         if (test_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
5151                 return;
5152
5153         if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
5154             !iscsi_is_session_online(cls_sess)) {
5155                 DEBUG2(ql4_printk(KERN_INFO, ha,
5156                                   "relogin issued\n"));
5157                 qla4xxx_relogin_flash_ddb(cls_sess);
5158         }
5159 }
5160
5161 void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
5162 {
5163         if (ha->dpc_thread)
5164                 queue_work(ha->dpc_thread, &ha->dpc_work);
5165 }
5166
5167 static struct qla4_work_evt *
5168 qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
5169                    enum qla4_work_type type)
5170 {
5171         struct qla4_work_evt *e;
5172         uint32_t size = sizeof(struct qla4_work_evt) + data_size;
5173
5174         e = kzalloc(size, GFP_ATOMIC);
5175         if (!e)
5176                 return NULL;
5177
5178         INIT_LIST_HEAD(&e->list);
5179         e->type = type;
5180         return e;
5181 }
5182
5183 static void qla4xxx_post_work(struct scsi_qla_host *ha,
5184                              struct qla4_work_evt *e)
5185 {
5186         unsigned long flags;
5187
5188         spin_lock_irqsave(&ha->work_lock, flags);
5189         list_add_tail(&e->list, &ha->work_list);
5190         spin_unlock_irqrestore(&ha->work_lock, flags);
5191         qla4xxx_wake_dpc(ha);
5192 }
5193
5194 int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
5195                           enum iscsi_host_event_code aen_code,
5196                           uint32_t data_size, uint8_t *data)
5197 {
5198         struct qla4_work_evt *e;
5199
5200         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
5201         if (!e)
5202                 return QLA_ERROR;
5203
5204         e->u.aen.code = aen_code;
5205         e->u.aen.data_size = data_size;
5206         memcpy(e->u.aen.data, data, data_size);
5207
5208         qla4xxx_post_work(ha, e);
5209
5210         return QLA_SUCCESS;
5211 }
5212
5213 int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
5214                                uint32_t status, uint32_t pid,
5215                                uint32_t data_size, uint8_t *data)
5216 {
5217         struct qla4_work_evt *e;
5218
5219         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
5220         if (!e)
5221                 return QLA_ERROR;
5222
5223         e->u.ping.status = status;
5224         e->u.ping.pid = pid;
5225         e->u.ping.data_size = data_size;
5226         memcpy(e->u.ping.data, data, data_size);
5227
5228         qla4xxx_post_work(ha, e);
5229
5230         return QLA_SUCCESS;
5231 }
5232
5233 static void qla4xxx_do_work(struct scsi_qla_host *ha)
5234 {
5235         struct qla4_work_evt *e, *tmp;
5236         unsigned long flags;
5237         LIST_HEAD(work);
5238
5239         spin_lock_irqsave(&ha->work_lock, flags);
5240         list_splice_init(&ha->work_list, &work);
5241         spin_unlock_irqrestore(&ha->work_lock, flags);
5242
5243         list_for_each_entry_safe(e, tmp, &work, list) {
5244                 list_del_init(&e->list);
5245
5246                 switch (e->type) {
5247                 case QLA4_EVENT_AEN:
5248                         iscsi_post_host_event(ha->host_no,
5249                                               &qla4xxx_iscsi_transport,
5250                                               e->u.aen.code,
5251                                               e->u.aen.data_size,
5252                                               e->u.aen.data);
5253                         break;
5254                 case QLA4_EVENT_PING_STATUS:
5255                         iscsi_ping_comp_event(ha->host_no,
5256                                               &qla4xxx_iscsi_transport,
5257                                               e->u.ping.status,
5258                                               e->u.ping.pid,
5259                                               e->u.ping.data_size,
5260                                               e->u.ping.data);
5261                         break;
5262                 default:
5263                         ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
5264                                    "supported", e->type);
5265                 }
5266                 kfree(e);
5267         }
5268 }
5269
5270 /**
5271  * qla4xxx_do_dpc - dpc routine
5272  * @data: in our case pointer to adapter structure
5273  *
5274  * This routine is a task that is schedule by the interrupt handler
5275  * to perform the background processing for interrupts.  We put it
5276  * on a task queue that is consumed whenever the scheduler runs; that's
5277  * so you can do anything (i.e. put the process to sleep etc).  In fact,
5278  * the mid-level tries to sleep when it reaches the driver threshold
5279  * "host->can_queue". This can cause a panic if we were in our interrupt code.
5280  **/
5281 static void qla4xxx_do_dpc(struct work_struct *work)
5282 {
5283         struct scsi_qla_host *ha =
5284                 container_of(work, struct scsi_qla_host, dpc_work);
5285         int status = QLA_ERROR;
5286
5287         DEBUG2(ql4_printk(KERN_INFO, ha,
5288                           "scsi%ld: %s: DPC handler waking up. flags = 0x%08lx, dpc_flags = 0x%08lx\n",
5289                           ha->host_no, __func__, ha->flags, ha->dpc_flags));
5290
5291         /* Initialization not yet finished. Don't do anything yet. */
5292         if (!test_bit(AF_INIT_DONE, &ha->flags))
5293                 return;
5294
5295         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
5296                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
5297                     ha->host_no, __func__, ha->flags));
5298                 return;
5299         }
5300
5301         /* post events to application */
5302         qla4xxx_do_work(ha);
5303
5304         if (is_qla80XX(ha)) {
5305                 if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
5306                         if (is_qla8032(ha) || is_qla8042(ha)) {
5307                                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
5308                                            __func__);
5309                                 /* disable pause frame for ISP83xx */
5310                                 qla4_83xx_disable_pause(ha);
5311                         }
5312
5313                         ha->isp_ops->idc_lock(ha);
5314                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
5315                                             QLA8XXX_DEV_FAILED);
5316                         ha->isp_ops->idc_unlock(ha);
5317                         ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
5318                         qla4_8xxx_device_state_handler(ha);
5319                 }
5320
5321                 if (test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags)) {
5322                         if (is_qla8042(ha)) {
5323                                 if (ha->idc_info.info2 &
5324                                     ENABLE_INTERNAL_LOOPBACK) {
5325                                         ql4_printk(KERN_INFO, ha, "%s: Disabling ACB\n",
5326                                                    __func__);
5327                                         status = qla4_84xx_config_acb(ha,
5328                                                             ACB_CONFIG_DISABLE);
5329                                         if (status != QLA_SUCCESS) {
5330                                                 ql4_printk(KERN_INFO, ha, "%s: ACB config failed\n",
5331                                                            __func__);
5332                                         }
5333                                 }
5334                         }
5335                         qla4_83xx_post_idc_ack(ha);
5336                         clear_bit(DPC_POST_IDC_ACK, &ha->dpc_flags);
5337                 }
5338
5339                 if (is_qla8042(ha) &&
5340                     test_bit(DPC_RESTORE_ACB, &ha->dpc_flags)) {
5341                         ql4_printk(KERN_INFO, ha, "%s: Restoring ACB\n",
5342                                    __func__);
5343                         if (qla4_84xx_config_acb(ha, ACB_CONFIG_SET) !=
5344                             QLA_SUCCESS) {
5345                                 ql4_printk(KERN_INFO, ha, "%s: ACB config failed ",
5346                                            __func__);
5347                         }
5348                         clear_bit(DPC_RESTORE_ACB, &ha->dpc_flags);
5349                 }
5350
5351                 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
5352                         qla4_8xxx_need_qsnt_handler(ha);
5353                 }
5354         }
5355
5356         if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
5357             (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
5358             test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
5359             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
5360                 if ((is_qla8022(ha) && ql4xdontresethba) ||
5361                     ((is_qla8032(ha) || is_qla8042(ha)) &&
5362                      qla4_83xx_idc_dontreset(ha))) {
5363                         DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
5364                             ha->host_no, __func__));
5365                         clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5366                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
5367                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5368                         goto dpc_post_reset_ha;
5369                 }
5370                 if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
5371                     test_bit(DPC_RESET_HA, &ha->dpc_flags))
5372                         qla4xxx_recover_adapter(ha);
5373
5374                 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
5375                         uint8_t wait_time = RESET_INTR_TOV;
5376
5377                         while ((readw(&ha->reg->ctrl_status) &
5378                                 (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
5379                                 if (--wait_time == 0)
5380                                         break;
5381                                 msleep(1000);
5382                         }
5383                         if (wait_time == 0)
5384                                 DEBUG2(printk("scsi%ld: %s: SR|FSR "
5385                                               "bit not cleared-- resetting\n",
5386                                               ha->host_no, __func__));
5387                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
5388                         if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
5389                                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
5390                                 status = qla4xxx_recover_adapter(ha);
5391                         }
5392                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
5393                         if (status == QLA_SUCCESS)
5394                                 ha->isp_ops->enable_intrs(ha);
5395                 }
5396         }
5397
5398 dpc_post_reset_ha:
5399         /* ---- process AEN? --- */
5400         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
5401                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
5402
5403         /* ---- Get DHCP IP Address? --- */
5404         if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
5405                 qla4xxx_get_dhcp_ip_address(ha);
5406
5407         /* ---- relogin device? --- */
5408         if (adapter_up(ha) &&
5409             test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
5410                 iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
5411         }
5412
5413         /* ---- link change? --- */
5414         if (!test_bit(AF_LOOPBACK, &ha->flags) &&
5415             test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
5416                 if (!test_bit(AF_LINK_UP, &ha->flags)) {
5417                         /* ---- link down? --- */
5418                         qla4xxx_mark_all_devices_missing(ha);
5419                 } else {
5420                         /* ---- link up? --- *
5421                          * F/W will auto login to all devices ONLY ONCE after
5422                          * link up during driver initialization and runtime
5423                          * fatal error recovery.  Therefore, the driver must
5424                          * manually relogin to devices when recovering from
5425                          * connection failures, logouts, expired KATO, etc. */
5426                         if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
5427                                 qla4xxx_build_ddb_list(ha, ha->is_reset);
5428                                 iscsi_host_for_each_session(ha->host,
5429                                                 qla4xxx_login_flash_ddb);
5430                         } else
5431                                 qla4xxx_relogin_all_devices(ha);
5432                 }
5433         }
5434         if (test_and_clear_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags)) {
5435                 if (qla4xxx_sysfs_ddb_export(ha))
5436                         ql4_printk(KERN_ERR, ha, "%s: Error exporting ddb to sysfs\n",
5437                                    __func__);
5438         }
5439 }
5440
5441 /**
5442  * qla4xxx_free_adapter - release the adapter
5443  * @ha: pointer to adapter structure
5444  **/
5445 static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
5446 {
5447         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
5448
5449         /* Turn-off interrupts on the card. */
5450         ha->isp_ops->disable_intrs(ha);
5451
5452         if (is_qla40XX(ha)) {
5453                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
5454                        &ha->reg->ctrl_status);
5455                 readl(&ha->reg->ctrl_status);
5456         } else if (is_qla8022(ha)) {
5457                 writel(0, &ha->qla4_82xx_reg->host_int);
5458                 readl(&ha->qla4_82xx_reg->host_int);
5459         } else if (is_qla8032(ha) || is_qla8042(ha)) {
5460                 writel(0, &ha->qla4_83xx_reg->risc_intr);
5461                 readl(&ha->qla4_83xx_reg->risc_intr);
5462         }
5463
5464         /* Remove timer thread, if present */
5465         if (ha->timer_active)
5466                 qla4xxx_stop_timer(ha);
5467
5468         /* Kill the kernel thread for this host */
5469         if (ha->dpc_thread)
5470                 destroy_workqueue(ha->dpc_thread);
5471
5472         /* Kill the kernel thread for this host */
5473         if (ha->task_wq)
5474                 destroy_workqueue(ha->task_wq);
5475
5476         /* Put firmware in known state */
5477         ha->isp_ops->reset_firmware(ha);
5478
5479         if (is_qla80XX(ha)) {
5480                 ha->isp_ops->idc_lock(ha);
5481                 qla4_8xxx_clear_drv_active(ha);
5482                 ha->isp_ops->idc_unlock(ha);
5483         }
5484
5485         /* Detach interrupts */
5486         qla4xxx_free_irqs(ha);
5487
5488         /* free extra memory */
5489         qla4xxx_mem_free(ha);
5490 }
5491
5492 int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
5493 {
5494         int status = 0;
5495         unsigned long mem_base, mem_len, db_base, db_len;
5496         struct pci_dev *pdev = ha->pdev;
5497
5498         status = pci_request_regions(pdev, DRIVER_NAME);
5499         if (status) {
5500                 printk(KERN_WARNING
5501                     "scsi(%ld) Failed to reserve PIO regions (%s) "
5502                     "status=%d\n", ha->host_no, pci_name(pdev), status);
5503                 goto iospace_error_exit;
5504         }
5505
5506         DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
5507             __func__, pdev->revision));
5508         ha->revision_id = pdev->revision;
5509
5510         /* remap phys address */
5511         mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
5512         mem_len = pci_resource_len(pdev, 0);
5513         DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
5514             __func__, mem_base, mem_len));
5515
5516         /* mapping of pcibase pointer */
5517         ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
5518         if (!ha->nx_pcibase) {
5519                 printk(KERN_ERR
5520                     "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
5521                 pci_release_regions(ha->pdev);
5522                 goto iospace_error_exit;
5523         }
5524
5525         /* Mapping of IO base pointer, door bell read and write pointer */
5526
5527         /* mapping of IO base pointer */
5528         if (is_qla8022(ha)) {
5529                 ha->qla4_82xx_reg = (struct device_reg_82xx  __iomem *)
5530                                     ((uint8_t *)ha->nx_pcibase + 0xbc000 +
5531                                      (ha->pdev->devfn << 11));
5532                 ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
5533                                     QLA82XX_CAM_RAM_DB2);
5534         } else if (is_qla8032(ha) || is_qla8042(ha)) {
5535                 ha->qla4_83xx_reg = (struct device_reg_83xx __iomem *)
5536                                     ((uint8_t *)ha->nx_pcibase);
5537         }
5538
5539         db_base = pci_resource_start(pdev, 4);  /* doorbell is on bar 4 */
5540         db_len = pci_resource_len(pdev, 4);
5541
5542         return 0;
5543 iospace_error_exit:
5544         return -ENOMEM;
5545 }
5546
5547 /***
5548  * qla4xxx_iospace_config - maps registers
5549  * @ha: pointer to adapter structure
5550  *
5551  * This routines maps HBA's registers from the pci address space
5552  * into the kernel virtual address space for memory mapped i/o.
5553  **/
5554 int qla4xxx_iospace_config(struct scsi_qla_host *ha)
5555 {
5556         unsigned long pio, pio_len, pio_flags;
5557         unsigned long mmio, mmio_len, mmio_flags;
5558
5559         pio = pci_resource_start(ha->pdev, 0);
5560         pio_len = pci_resource_len(ha->pdev, 0);
5561         pio_flags = pci_resource_flags(ha->pdev, 0);
5562         if (pio_flags & IORESOURCE_IO) {
5563                 if (pio_len < MIN_IOBASE_LEN) {
5564                         ql4_printk(KERN_WARNING, ha,
5565                                 "Invalid PCI I/O region size\n");
5566                         pio = 0;
5567                 }
5568         } else {
5569                 ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
5570                 pio = 0;
5571         }
5572
5573         /* Use MMIO operations for all accesses. */
5574         mmio = pci_resource_start(ha->pdev, 1);
5575         mmio_len = pci_resource_len(ha->pdev, 1);
5576         mmio_flags = pci_resource_flags(ha->pdev, 1);
5577
5578         if (!(mmio_flags & IORESOURCE_MEM)) {
5579                 ql4_printk(KERN_ERR, ha,
5580                     "region #0 not an MMIO resource, aborting\n");
5581
5582                 goto iospace_error_exit;
5583         }
5584
5585         if (mmio_len < MIN_IOBASE_LEN) {
5586                 ql4_printk(KERN_ERR, ha,
5587                     "Invalid PCI mem region size, aborting\n");
5588                 goto iospace_error_exit;
5589         }
5590
5591         if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
5592                 ql4_printk(KERN_WARNING, ha,
5593                     "Failed to reserve PIO/MMIO regions\n");
5594
5595                 goto iospace_error_exit;
5596         }
5597
5598         ha->pio_address = pio;
5599         ha->pio_length = pio_len;
5600         ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
5601         if (!ha->reg) {
5602                 ql4_printk(KERN_ERR, ha,
5603                     "cannot remap MMIO, aborting\n");
5604
5605                 goto iospace_error_exit;
5606         }
5607
5608         return 0;
5609
5610 iospace_error_exit:
5611         return -ENOMEM;
5612 }
5613
5614 static struct isp_operations qla4xxx_isp_ops = {
5615         .iospace_config         = qla4xxx_iospace_config,
5616         .pci_config             = qla4xxx_pci_config,
5617         .disable_intrs          = qla4xxx_disable_intrs,
5618         .enable_intrs           = qla4xxx_enable_intrs,
5619         .start_firmware         = qla4xxx_start_firmware,
5620         .intr_handler           = qla4xxx_intr_handler,
5621         .interrupt_service_routine = qla4xxx_interrupt_service_routine,
5622         .reset_chip             = qla4xxx_soft_reset,
5623         .reset_firmware         = qla4xxx_hw_reset,
5624         .queue_iocb             = qla4xxx_queue_iocb,
5625         .complete_iocb          = qla4xxx_complete_iocb,
5626         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
5627         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
5628         .get_sys_info           = qla4xxx_get_sys_info,
5629         .queue_mailbox_command  = qla4xxx_queue_mbox_cmd,
5630         .process_mailbox_interrupt = qla4xxx_process_mbox_intr,
5631 };
5632
5633 static struct isp_operations qla4_82xx_isp_ops = {
5634         .iospace_config         = qla4_8xxx_iospace_config,
5635         .pci_config             = qla4_8xxx_pci_config,
5636         .disable_intrs          = qla4_82xx_disable_intrs,
5637         .enable_intrs           = qla4_82xx_enable_intrs,
5638         .start_firmware         = qla4_8xxx_load_risc,
5639         .restart_firmware       = qla4_82xx_try_start_fw,
5640         .intr_handler           = qla4_82xx_intr_handler,
5641         .interrupt_service_routine = qla4_82xx_interrupt_service_routine,
5642         .need_reset             = qla4_8xxx_need_reset,
5643         .reset_chip             = qla4_82xx_isp_reset,
5644         .reset_firmware         = qla4_8xxx_stop_firmware,
5645         .queue_iocb             = qla4_82xx_queue_iocb,
5646         .complete_iocb          = qla4_82xx_complete_iocb,
5647         .rd_shdw_req_q_out      = qla4_82xx_rd_shdw_req_q_out,
5648         .rd_shdw_rsp_q_in       = qla4_82xx_rd_shdw_rsp_q_in,
5649         .get_sys_info           = qla4_8xxx_get_sys_info,
5650         .rd_reg_direct          = qla4_82xx_rd_32,
5651         .wr_reg_direct          = qla4_82xx_wr_32,
5652         .rd_reg_indirect        = qla4_82xx_md_rd_32,
5653         .wr_reg_indirect        = qla4_82xx_md_wr_32,
5654         .idc_lock               = qla4_82xx_idc_lock,
5655         .idc_unlock             = qla4_82xx_idc_unlock,
5656         .rom_lock_recovery      = qla4_82xx_rom_lock_recovery,
5657         .queue_mailbox_command  = qla4_82xx_queue_mbox_cmd,
5658         .process_mailbox_interrupt = qla4_82xx_process_mbox_intr,
5659 };
5660
5661 static struct isp_operations qla4_83xx_isp_ops = {
5662         .iospace_config         = qla4_8xxx_iospace_config,
5663         .pci_config             = qla4_8xxx_pci_config,
5664         .disable_intrs          = qla4_83xx_disable_intrs,
5665         .enable_intrs           = qla4_83xx_enable_intrs,
5666         .start_firmware         = qla4_8xxx_load_risc,
5667         .restart_firmware       = qla4_83xx_start_firmware,
5668         .intr_handler           = qla4_83xx_intr_handler,
5669         .interrupt_service_routine = qla4_83xx_interrupt_service_routine,
5670         .need_reset             = qla4_8xxx_need_reset,
5671         .reset_chip             = qla4_83xx_isp_reset,
5672         .reset_firmware         = qla4_8xxx_stop_firmware,
5673         .queue_iocb             = qla4_83xx_queue_iocb,
5674         .complete_iocb          = qla4_83xx_complete_iocb,
5675         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
5676         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
5677         .get_sys_info           = qla4_8xxx_get_sys_info,
5678         .rd_reg_direct          = qla4_83xx_rd_reg,
5679         .wr_reg_direct          = qla4_83xx_wr_reg,
5680         .rd_reg_indirect        = qla4_83xx_rd_reg_indirect,
5681         .wr_reg_indirect        = qla4_83xx_wr_reg_indirect,
5682         .idc_lock               = qla4_83xx_drv_lock,
5683         .idc_unlock             = qla4_83xx_drv_unlock,
5684         .rom_lock_recovery      = qla4_83xx_rom_lock_recovery,
5685         .queue_mailbox_command  = qla4_83xx_queue_mbox_cmd,
5686         .process_mailbox_interrupt = qla4_83xx_process_mbox_intr,
5687 };
5688
5689 uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
5690 {
5691         return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
5692 }
5693
5694 uint16_t qla4_82xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
5695 {
5696         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->req_q_out));
5697 }
5698
5699 uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
5700 {
5701         return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
5702 }
5703
5704 uint16_t qla4_82xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
5705 {
5706         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->rsp_q_in));
5707 }
5708
5709 static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
5710 {
5711         struct scsi_qla_host *ha = data;
5712         char *str = buf;
5713         int rc;
5714
5715         switch (type) {
5716         case ISCSI_BOOT_ETH_FLAGS:
5717                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
5718                 break;
5719         case ISCSI_BOOT_ETH_INDEX:
5720                 rc = sprintf(str, "0\n");
5721                 break;
5722         case ISCSI_BOOT_ETH_MAC:
5723                 rc = sysfs_format_mac(str, ha->my_mac,
5724                                       MAC_ADDR_LEN);
5725                 break;
5726         default:
5727                 rc = -ENOSYS;
5728                 break;
5729         }
5730         return rc;
5731 }
5732
5733 static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
5734 {
5735         int rc;
5736
5737         switch (type) {
5738         case ISCSI_BOOT_ETH_FLAGS:
5739         case ISCSI_BOOT_ETH_MAC:
5740         case ISCSI_BOOT_ETH_INDEX:
5741                 rc = S_IRUGO;
5742                 break;
5743         default:
5744                 rc = 0;
5745                 break;
5746         }
5747         return rc;
5748 }
5749
5750 static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
5751 {
5752         struct scsi_qla_host *ha = data;
5753         char *str = buf;
5754         int rc;
5755
5756         switch (type) {
5757         case ISCSI_BOOT_INI_INITIATOR_NAME:
5758                 rc = sprintf(str, "%s\n", ha->name_string);
5759                 break;
5760         default:
5761                 rc = -ENOSYS;
5762                 break;
5763         }
5764         return rc;
5765 }
5766
5767 static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
5768 {
5769         int rc;
5770
5771         switch (type) {
5772         case ISCSI_BOOT_INI_INITIATOR_NAME:
5773                 rc = S_IRUGO;
5774                 break;
5775         default:
5776                 rc = 0;
5777                 break;
5778         }
5779         return rc;
5780 }
5781
5782 static ssize_t
5783 qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
5784                            char *buf)
5785 {
5786         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
5787         char *str = buf;
5788         int rc;
5789
5790         switch (type) {
5791         case ISCSI_BOOT_TGT_NAME:
5792                 rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
5793                 break;
5794         case ISCSI_BOOT_TGT_IP_ADDR:
5795                 if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
5796                         rc = sprintf(buf, "%pI4\n",
5797                                      &boot_conn->dest_ipaddr.ip_address);
5798                 else
5799                         rc = sprintf(str, "%pI6\n",
5800                                      &boot_conn->dest_ipaddr.ip_address);
5801                 break;
5802         case ISCSI_BOOT_TGT_PORT:
5803                         rc = sprintf(str, "%d\n", boot_conn->dest_port);
5804                 break;
5805         case ISCSI_BOOT_TGT_CHAP_NAME:
5806                 rc = sprintf(str,  "%.*s\n",
5807                              boot_conn->chap.target_chap_name_length,
5808                              (char *)&boot_conn->chap.target_chap_name);
5809                 break;
5810         case ISCSI_BOOT_TGT_CHAP_SECRET:
5811                 rc = sprintf(str,  "%.*s\n",
5812                              boot_conn->chap.target_secret_length,
5813                              (char *)&boot_conn->chap.target_secret);
5814                 break;
5815         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
5816                 rc = sprintf(str,  "%.*s\n",
5817                              boot_conn->chap.intr_chap_name_length,
5818                              (char *)&boot_conn->chap.intr_chap_name);
5819                 break;
5820         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
5821                 rc = sprintf(str,  "%.*s\n",
5822                              boot_conn->chap.intr_secret_length,
5823                              (char *)&boot_conn->chap.intr_secret);
5824                 break;
5825         case ISCSI_BOOT_TGT_FLAGS:
5826                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
5827                 break;
5828         case ISCSI_BOOT_TGT_NIC_ASSOC:
5829                 rc = sprintf(str, "0\n");
5830                 break;
5831         default:
5832                 rc = -ENOSYS;
5833                 break;
5834         }
5835         return rc;
5836 }
5837
5838 static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
5839 {
5840         struct scsi_qla_host *ha = data;
5841         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
5842
5843         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
5844 }
5845
5846 static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
5847 {
5848         struct scsi_qla_host *ha = data;
5849         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
5850
5851         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
5852 }
5853
5854 static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
5855 {
5856         int rc;
5857
5858         switch (type) {
5859         case ISCSI_BOOT_TGT_NAME:
5860         case ISCSI_BOOT_TGT_IP_ADDR:
5861         case ISCSI_BOOT_TGT_PORT:
5862         case ISCSI_BOOT_TGT_CHAP_NAME:
5863         case ISCSI_BOOT_TGT_CHAP_SECRET:
5864         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
5865         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
5866         case ISCSI_BOOT_TGT_NIC_ASSOC:
5867         case ISCSI_BOOT_TGT_FLAGS:
5868                 rc = S_IRUGO;
5869                 break;
5870         default:
5871                 rc = 0;
5872                 break;
5873         }
5874         return rc;
5875 }
5876
5877 static void qla4xxx_boot_release(void *data)
5878 {
5879         struct scsi_qla_host *ha = data;
5880
5881         scsi_host_put(ha->host);
5882 }
5883
5884 static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
5885 {
5886         dma_addr_t buf_dma;
5887         uint32_t addr, pri_addr, sec_addr;
5888         uint32_t offset;
5889         uint16_t func_num;
5890         uint8_t val;
5891         uint8_t *buf = NULL;
5892         size_t size = 13 * sizeof(uint8_t);
5893         int ret = QLA_SUCCESS;
5894
5895         func_num = PCI_FUNC(ha->pdev->devfn);
5896
5897         ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
5898                    __func__, ha->pdev->device, func_num);
5899
5900         if (is_qla40XX(ha)) {
5901                 if (func_num == 1) {
5902                         addr = NVRAM_PORT0_BOOT_MODE;
5903                         pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
5904                         sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
5905                 } else if (func_num == 3) {
5906                         addr = NVRAM_PORT1_BOOT_MODE;
5907                         pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
5908                         sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
5909                 } else {
5910                         ret = QLA_ERROR;
5911                         goto exit_boot_info;
5912                 }
5913
5914                 /* Check Boot Mode */
5915                 val = rd_nvram_byte(ha, addr);
5916                 if (!(val & 0x07)) {
5917                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
5918                                           "options : 0x%x\n", __func__, val));
5919                         ret = QLA_ERROR;
5920                         goto exit_boot_info;
5921                 }
5922
5923                 /* get primary valid target index */
5924                 val = rd_nvram_byte(ha, pri_addr);
5925                 if (val & BIT_7)
5926                         ddb_index[0] = (val & 0x7f);
5927
5928                 /* get secondary valid target index */
5929                 val = rd_nvram_byte(ha, sec_addr);
5930                 if (val & BIT_7)
5931                         ddb_index[1] = (val & 0x7f);
5932                 goto exit_boot_info;
5933         } else if (is_qla80XX(ha)) {
5934                 buf = dma_alloc_coherent(&ha->pdev->dev, size,
5935                                          &buf_dma, GFP_KERNEL);
5936                 if (!buf) {
5937                         DEBUG2(ql4_printk(KERN_ERR, ha,
5938                                           "%s: Unable to allocate dma buffer\n",
5939                                            __func__));
5940                         ret = QLA_ERROR;
5941                         goto exit_boot_info;
5942                 }
5943
5944                 if (ha->port_num == 0)
5945                         offset = BOOT_PARAM_OFFSET_PORT0;
5946                 else if (ha->port_num == 1)
5947                         offset = BOOT_PARAM_OFFSET_PORT1;
5948                 else {
5949                         ret = QLA_ERROR;
5950                         goto exit_boot_info_free;
5951                 }
5952                 addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
5953                        offset;
5954                 if (qla4xxx_get_flash(ha, buf_dma, addr,
5955                                       13 * sizeof(uint8_t)) != QLA_SUCCESS) {
5956                         DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
5957                                           " failed\n", ha->host_no, __func__));
5958                         ret = QLA_ERROR;
5959                         goto exit_boot_info_free;
5960                 }
5961                 /* Check Boot Mode */
5962                 if (!(buf[1] & 0x07)) {
5963                         DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
5964                                           " : 0x%x\n", buf[1]));
5965                         ret = QLA_ERROR;
5966                         goto exit_boot_info_free;
5967                 }
5968
5969                 /* get primary valid target index */
5970                 if (buf[2] & BIT_7)
5971                         ddb_index[0] = buf[2] & 0x7f;
5972
5973                 /* get secondary valid target index */
5974                 if (buf[11] & BIT_7)
5975                         ddb_index[1] = buf[11] & 0x7f;
5976         } else {
5977                 ret = QLA_ERROR;
5978                 goto exit_boot_info;
5979         }
5980
5981         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
5982                           " target ID %d\n", __func__, ddb_index[0],
5983                           ddb_index[1]));
5984
5985 exit_boot_info_free:
5986         dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
5987 exit_boot_info:
5988         ha->pri_ddb_idx = ddb_index[0];
5989         ha->sec_ddb_idx = ddb_index[1];
5990         return ret;
5991 }
5992
5993 /**
5994  * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
5995  * @ha: pointer to adapter structure
5996  * @username: CHAP username to be returned
5997  * @password: CHAP password to be returned
5998  *
5999  * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
6000  * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
6001  * So from the CHAP cache find the first BIDI CHAP entry and set it
6002  * to the boot record in sysfs.
6003  **/
6004 static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
6005                             char *password)
6006 {
6007         int i, ret = -EINVAL;
6008         int max_chap_entries = 0;
6009         struct ql4_chap_table *chap_table;
6010
6011         if (is_qla80XX(ha))
6012                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
6013                                                 sizeof(struct ql4_chap_table);
6014         else
6015                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
6016
6017         if (!ha->chap_list) {
6018                 ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
6019                 return ret;
6020         }
6021
6022         mutex_lock(&ha->chap_sem);
6023         for (i = 0; i < max_chap_entries; i++) {
6024                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
6025                 if (chap_table->cookie !=
6026                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
6027                         continue;
6028                 }
6029
6030                 if (chap_table->flags & BIT_7) /* local */
6031                         continue;
6032
6033                 if (!(chap_table->flags & BIT_6)) /* Not BIDI */
6034                         continue;
6035
6036                 strlcpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
6037                 strlcpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
6038                 ret = 0;
6039                 break;
6040         }
6041         mutex_unlock(&ha->chap_sem);
6042
6043         return ret;
6044 }
6045
6046
6047 static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
6048                                    struct ql4_boot_session_info *boot_sess,
6049                                    uint16_t ddb_index)
6050 {
6051         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
6052         struct dev_db_entry *fw_ddb_entry;
6053         dma_addr_t fw_ddb_entry_dma;
6054         uint16_t idx;
6055         uint16_t options;
6056         int ret = QLA_SUCCESS;
6057
6058         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6059                                           &fw_ddb_entry_dma, GFP_KERNEL);
6060         if (!fw_ddb_entry) {
6061                 DEBUG2(ql4_printk(KERN_ERR, ha,
6062                                   "%s: Unable to allocate dma buffer.\n",
6063                                   __func__));
6064                 ret = QLA_ERROR;
6065                 return ret;
6066         }
6067
6068         if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
6069                                    fw_ddb_entry_dma, ddb_index)) {
6070                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
6071                                   "index [%d]\n", __func__, ddb_index));
6072                 ret = QLA_ERROR;
6073                 goto exit_boot_target;
6074         }
6075
6076         /* Update target name and IP from DDB */
6077         memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
6078                min(sizeof(boot_sess->target_name),
6079                    sizeof(fw_ddb_entry->iscsi_name)));
6080
6081         options = le16_to_cpu(fw_ddb_entry->options);
6082         if (options & DDB_OPT_IPV6_DEVICE) {
6083                 memcpy(&boot_conn->dest_ipaddr.ip_address,
6084                        &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
6085         } else {
6086                 boot_conn->dest_ipaddr.ip_type = 0x1;
6087                 memcpy(&boot_conn->dest_ipaddr.ip_address,
6088                        &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
6089         }
6090
6091         boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
6092
6093         /* update chap information */
6094         idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
6095
6096         if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options))   {
6097
6098                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
6099
6100                 ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
6101                                        target_chap_name,
6102                                        (char *)&boot_conn->chap.target_secret,
6103                                        idx);
6104                 if (ret) {
6105                         ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
6106                         ret = QLA_ERROR;
6107                         goto exit_boot_target;
6108                 }
6109
6110                 boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
6111                 boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
6112         }
6113
6114         if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
6115
6116                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
6117
6118                 ret = qla4xxx_get_bidi_chap(ha,
6119                                     (char *)&boot_conn->chap.intr_chap_name,
6120                                     (char *)&boot_conn->chap.intr_secret);
6121
6122                 if (ret) {
6123                         ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
6124                         ret = QLA_ERROR;
6125                         goto exit_boot_target;
6126                 }
6127
6128                 boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
6129                 boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
6130         }
6131
6132 exit_boot_target:
6133         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6134                           fw_ddb_entry, fw_ddb_entry_dma);
6135         return ret;
6136 }
6137
6138 static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
6139 {
6140         uint16_t ddb_index[2];
6141         int ret = QLA_ERROR;
6142         int rval;
6143
6144         memset(ddb_index, 0, sizeof(ddb_index));
6145         ddb_index[0] = 0xffff;
6146         ddb_index[1] = 0xffff;
6147         ret = get_fw_boot_info(ha, ddb_index);
6148         if (ret != QLA_SUCCESS) {
6149                 DEBUG2(ql4_printk(KERN_INFO, ha,
6150                                 "%s: No boot target configured.\n", __func__));
6151                 return ret;
6152         }
6153
6154         if (ql4xdisablesysfsboot)
6155                 return QLA_SUCCESS;
6156
6157         if (ddb_index[0] == 0xffff)
6158                 goto sec_target;
6159
6160         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
6161                                       ddb_index[0]);
6162         if (rval != QLA_SUCCESS) {
6163                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
6164                                   "configured\n", __func__));
6165         } else
6166                 ret = QLA_SUCCESS;
6167
6168 sec_target:
6169         if (ddb_index[1] == 0xffff)
6170                 goto exit_get_boot_info;
6171
6172         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
6173                                       ddb_index[1]);
6174         if (rval != QLA_SUCCESS) {
6175                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
6176                                   " configured\n", __func__));
6177         } else
6178                 ret = QLA_SUCCESS;
6179
6180 exit_get_boot_info:
6181         return ret;
6182 }
6183
6184 static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
6185 {
6186         struct iscsi_boot_kobj *boot_kobj;
6187
6188         if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
6189                 return QLA_ERROR;
6190
6191         if (ql4xdisablesysfsboot) {
6192                 ql4_printk(KERN_INFO, ha,
6193                            "%s: syfsboot disabled - driver will trigger login "
6194                            "and publish session for discovery .\n", __func__);
6195                 return QLA_SUCCESS;
6196         }
6197
6198
6199         ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
6200         if (!ha->boot_kset)
6201                 goto kset_free;
6202
6203         if (!scsi_host_get(ha->host))
6204                 goto kset_free;
6205         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
6206                                              qla4xxx_show_boot_tgt_pri_info,
6207                                              qla4xxx_tgt_get_attr_visibility,
6208                                              qla4xxx_boot_release);
6209         if (!boot_kobj)
6210                 goto put_host;
6211
6212         if (!scsi_host_get(ha->host))
6213                 goto kset_free;
6214         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
6215                                              qla4xxx_show_boot_tgt_sec_info,
6216                                              qla4xxx_tgt_get_attr_visibility,
6217                                              qla4xxx_boot_release);
6218         if (!boot_kobj)
6219                 goto put_host;
6220
6221         if (!scsi_host_get(ha->host))
6222                 goto kset_free;
6223         boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
6224                                                qla4xxx_show_boot_ini_info,
6225                                                qla4xxx_ini_get_attr_visibility,
6226                                                qla4xxx_boot_release);
6227         if (!boot_kobj)
6228                 goto put_host;
6229
6230         if (!scsi_host_get(ha->host))
6231                 goto kset_free;
6232         boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
6233                                                qla4xxx_show_boot_eth_info,
6234                                                qla4xxx_eth_get_attr_visibility,
6235                                                qla4xxx_boot_release);
6236         if (!boot_kobj)
6237                 goto put_host;
6238
6239         return QLA_SUCCESS;
6240
6241 put_host:
6242         scsi_host_put(ha->host);
6243 kset_free:
6244         iscsi_boot_destroy_kset(ha->boot_kset);
6245         return -ENOMEM;
6246 }
6247
6248
6249 static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
6250                                   struct ql4_tuple_ddb *tddb)
6251 {
6252         struct scsi_qla_host *ha;
6253         struct iscsi_cls_session *cls_sess;
6254         struct iscsi_cls_conn *cls_conn;
6255         struct iscsi_session *sess;
6256         struct iscsi_conn *conn;
6257
6258         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
6259         ha = ddb_entry->ha;
6260         cls_sess = ddb_entry->sess;
6261         sess = cls_sess->dd_data;
6262         cls_conn = ddb_entry->conn;
6263         conn = cls_conn->dd_data;
6264
6265         tddb->tpgt = sess->tpgt;
6266         tddb->port = conn->persistent_port;
6267         strlcpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
6268         strlcpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
6269 }
6270
6271 static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
6272                                       struct ql4_tuple_ddb *tddb,
6273                                       uint8_t *flash_isid)
6274 {
6275         uint16_t options = 0;
6276
6277         tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
6278         memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
6279                min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
6280
6281         options = le16_to_cpu(fw_ddb_entry->options);
6282         if (options & DDB_OPT_IPV6_DEVICE)
6283                 sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
6284         else
6285                 sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
6286
6287         tddb->port = le16_to_cpu(fw_ddb_entry->port);
6288
6289         if (flash_isid == NULL)
6290                 memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0],
6291                        sizeof(tddb->isid));
6292         else
6293                 memcpy(&tddb->isid[0], &flash_isid[0], sizeof(tddb->isid));
6294 }
6295
6296 static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
6297                                      struct ql4_tuple_ddb *old_tddb,
6298                                      struct ql4_tuple_ddb *new_tddb,
6299                                      uint8_t is_isid_compare)
6300 {
6301         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
6302                 return QLA_ERROR;
6303
6304         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
6305                 return QLA_ERROR;
6306
6307         if (old_tddb->port != new_tddb->port)
6308                 return QLA_ERROR;
6309
6310         /* For multi sessions, driver generates the ISID, so do not compare
6311          * ISID in reset path since it would be a comparison between the
6312          * driver generated ISID and firmware generated ISID. This could
6313          * lead to adding duplicated DDBs in the list as driver generated
6314          * ISID would not match firmware generated ISID.
6315          */
6316         if (is_isid_compare) {
6317                 DEBUG2(ql4_printk(KERN_INFO, ha,
6318                         "%s: old ISID [%pmR] New ISID [%pmR]\n",
6319                         __func__, old_tddb->isid, new_tddb->isid));
6320
6321                 if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
6322                            sizeof(old_tddb->isid)))
6323                         return QLA_ERROR;
6324         }
6325
6326         DEBUG2(ql4_printk(KERN_INFO, ha,
6327                           "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
6328                           old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
6329                           old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
6330                           new_tddb->ip_addr, new_tddb->iscsi_name));
6331
6332         return QLA_SUCCESS;
6333 }
6334
6335 static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
6336                                      struct dev_db_entry *fw_ddb_entry,
6337                                      uint32_t *index)
6338 {
6339         struct ddb_entry *ddb_entry;
6340         struct ql4_tuple_ddb *fw_tddb = NULL;
6341         struct ql4_tuple_ddb *tmp_tddb = NULL;
6342         int idx;
6343         int ret = QLA_ERROR;
6344
6345         fw_tddb = vzalloc(sizeof(*fw_tddb));
6346         if (!fw_tddb) {
6347                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6348                                   "Memory Allocation failed.\n"));
6349                 ret = QLA_SUCCESS;
6350                 goto exit_check;
6351         }
6352
6353         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6354         if (!tmp_tddb) {
6355                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6356                                   "Memory Allocation failed.\n"));
6357                 ret = QLA_SUCCESS;
6358                 goto exit_check;
6359         }
6360
6361         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
6362
6363         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
6364                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
6365                 if (ddb_entry == NULL)
6366                         continue;
6367
6368                 qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
6369                 if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
6370                         ret = QLA_SUCCESS; /* found */
6371                         if (index != NULL)
6372                                 *index = idx;
6373                         goto exit_check;
6374                 }
6375         }
6376
6377 exit_check:
6378         if (fw_tddb)
6379                 vfree(fw_tddb);
6380         if (tmp_tddb)
6381                 vfree(tmp_tddb);
6382         return ret;
6383 }
6384
6385 /**
6386  * qla4xxx_check_existing_isid - check if target with same isid exist
6387  *                               in target list
6388  * @list_nt: list of target
6389  * @isid: isid to check
6390  *
6391  * This routine return QLA_SUCCESS if target with same isid exist
6392  **/
6393 static int qla4xxx_check_existing_isid(struct list_head *list_nt, uint8_t *isid)
6394 {
6395         struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
6396         struct dev_db_entry *fw_ddb_entry;
6397
6398         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6399                 fw_ddb_entry = &nt_ddb_idx->fw_ddb;
6400
6401                 if (memcmp(&fw_ddb_entry->isid[0], &isid[0],
6402                            sizeof(nt_ddb_idx->fw_ddb.isid)) == 0) {
6403                         return QLA_SUCCESS;
6404                 }
6405         }
6406         return QLA_ERROR;
6407 }
6408
6409 /**
6410  * qla4xxx_update_isid - compare ddbs and updated isid
6411  * @ha: Pointer to host adapter structure.
6412  * @list_nt: list of nt target
6413  * @fw_ddb_entry: firmware ddb entry
6414  *
6415  * This routine update isid if ddbs have same iqn, same isid and
6416  * different IP addr.
6417  * Return QLA_SUCCESS if isid is updated.
6418  **/
6419 static int qla4xxx_update_isid(struct scsi_qla_host *ha,
6420                                struct list_head *list_nt,
6421                                struct dev_db_entry *fw_ddb_entry)
6422 {
6423         uint8_t base_value, i;
6424
6425         base_value = fw_ddb_entry->isid[1] & 0x1f;
6426         for (i = 0; i < 8; i++) {
6427                 fw_ddb_entry->isid[1] = (base_value | (i << 5));
6428                 if (qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
6429                         break;
6430         }
6431
6432         if (!qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
6433                 return QLA_ERROR;
6434
6435         return QLA_SUCCESS;
6436 }
6437
6438 /**
6439  * qla4xxx_should_update_isid - check if isid need to update
6440  * @ha: Pointer to host adapter structure.
6441  * @old_tddb: ddb tuple
6442  * @new_tddb: ddb tuple
6443  *
6444  * Return QLA_SUCCESS if different IP, different PORT, same iqn,
6445  * same isid
6446  **/
6447 static int qla4xxx_should_update_isid(struct scsi_qla_host *ha,
6448                                       struct ql4_tuple_ddb *old_tddb,
6449                                       struct ql4_tuple_ddb *new_tddb)
6450 {
6451         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr) == 0) {
6452                 /* Same ip */
6453                 if (old_tddb->port == new_tddb->port)
6454                         return QLA_ERROR;
6455         }
6456
6457         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
6458                 /* different iqn */
6459                 return QLA_ERROR;
6460
6461         if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
6462                    sizeof(old_tddb->isid)))
6463                 /* different isid */
6464                 return QLA_ERROR;
6465
6466         return QLA_SUCCESS;
6467 }
6468
6469 /**
6470  * qla4xxx_is_flash_ddb_exists - check if fw_ddb_entry already exists in list_nt
6471  * @ha: Pointer to host adapter structure.
6472  * @list_nt: list of nt target.
6473  * @fw_ddb_entry: firmware ddb entry.
6474  *
6475  * This routine check if fw_ddb_entry already exists in list_nt to avoid
6476  * duplicate ddb in list_nt.
6477  * Return QLA_SUCCESS if duplicate ddb exit in list_nl.
6478  * Note: This function also update isid of DDB if required.
6479  **/
6480
6481 static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
6482                                        struct list_head *list_nt,
6483                                        struct dev_db_entry *fw_ddb_entry)
6484 {
6485         struct qla_ddb_index  *nt_ddb_idx, *nt_ddb_idx_tmp;
6486         struct ql4_tuple_ddb *fw_tddb = NULL;
6487         struct ql4_tuple_ddb *tmp_tddb = NULL;
6488         int rval, ret = QLA_ERROR;
6489
6490         fw_tddb = vzalloc(sizeof(*fw_tddb));
6491         if (!fw_tddb) {
6492                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6493                                   "Memory Allocation failed.\n"));
6494                 ret = QLA_SUCCESS;
6495                 goto exit_check;
6496         }
6497
6498         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6499         if (!tmp_tddb) {
6500                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6501                                   "Memory Allocation failed.\n"));
6502                 ret = QLA_SUCCESS;
6503                 goto exit_check;
6504         }
6505
6506         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
6507
6508         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6509                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb,
6510                                           nt_ddb_idx->flash_isid);
6511                 ret = qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true);
6512                 /* found duplicate ddb */
6513                 if (ret == QLA_SUCCESS)
6514                         goto exit_check;
6515         }
6516
6517         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6518                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb, NULL);
6519
6520                 ret = qla4xxx_should_update_isid(ha, tmp_tddb, fw_tddb);
6521                 if (ret == QLA_SUCCESS) {
6522                         rval = qla4xxx_update_isid(ha, list_nt, fw_ddb_entry);
6523                         if (rval == QLA_SUCCESS)
6524                                 ret = QLA_ERROR;
6525                         else
6526                                 ret = QLA_SUCCESS;
6527
6528                         goto exit_check;
6529                 }
6530         }
6531
6532 exit_check:
6533         if (fw_tddb)
6534                 vfree(fw_tddb);
6535         if (tmp_tddb)
6536                 vfree(tmp_tddb);
6537         return ret;
6538 }
6539
6540 static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
6541 {
6542         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6543
6544         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6545                 list_del_init(&ddb_idx->list);
6546                 vfree(ddb_idx);
6547         }
6548 }
6549
6550 static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
6551                                         struct dev_db_entry *fw_ddb_entry)
6552 {
6553         struct iscsi_endpoint *ep;
6554         struct sockaddr_in *addr;
6555         struct sockaddr_in6 *addr6;
6556         struct sockaddr *t_addr;
6557         struct sockaddr_storage *dst_addr;
6558         char *ip;
6559
6560         /* TODO: need to destroy on unload iscsi_endpoint*/
6561         dst_addr = vmalloc(sizeof(*dst_addr));
6562         if (!dst_addr)
6563                 return NULL;
6564
6565         if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
6566                 t_addr = (struct sockaddr *)dst_addr;
6567                 t_addr->sa_family = AF_INET6;
6568                 addr6 = (struct sockaddr_in6 *)dst_addr;
6569                 ip = (char *)&addr6->sin6_addr;
6570                 memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
6571                 addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
6572
6573         } else {
6574                 t_addr = (struct sockaddr *)dst_addr;
6575                 t_addr->sa_family = AF_INET;
6576                 addr = (struct sockaddr_in *)dst_addr;
6577                 ip = (char *)&addr->sin_addr;
6578                 memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
6579                 addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
6580         }
6581
6582         ep = qla4xxx_ep_connect(ha->host, (struct sockaddr *)dst_addr, 0);
6583         vfree(dst_addr);
6584         return ep;
6585 }
6586
6587 static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
6588 {
6589         if (ql4xdisablesysfsboot)
6590                 return QLA_SUCCESS;
6591         if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
6592                 return QLA_ERROR;
6593         return QLA_SUCCESS;
6594 }
6595
6596 static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
6597                                           struct ddb_entry *ddb_entry,
6598                                           uint16_t idx)
6599 {
6600         uint16_t def_timeout;
6601
6602         ddb_entry->ddb_type = FLASH_DDB;
6603         ddb_entry->fw_ddb_index = INVALID_ENTRY;
6604         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
6605         ddb_entry->ha = ha;
6606         ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
6607         ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
6608         ddb_entry->chap_tbl_idx = INVALID_ENTRY;
6609
6610         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
6611         atomic_set(&ddb_entry->relogin_timer, 0);
6612         atomic_set(&ddb_entry->relogin_retry_count, 0);
6613         def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
6614         ddb_entry->default_relogin_timeout =
6615                 (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
6616                 def_timeout : LOGIN_TOV;
6617         ddb_entry->default_time2wait =
6618                 le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
6619
6620         if (ql4xdisablesysfsboot &&
6621             (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx))
6622                 set_bit(DF_BOOT_TGT, &ddb_entry->flags);
6623 }
6624
6625 static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
6626 {
6627         uint32_t idx = 0;
6628         uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
6629         uint32_t sts[MBOX_REG_COUNT];
6630         uint32_t ip_state;
6631         unsigned long wtime;
6632         int ret;
6633
6634         wtime = jiffies + (HZ * IP_CONFIG_TOV);
6635         do {
6636                 for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
6637                         if (ip_idx[idx] == -1)
6638                                 continue;
6639
6640                         ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
6641
6642                         if (ret == QLA_ERROR) {
6643                                 ip_idx[idx] = -1;
6644                                 continue;
6645                         }
6646
6647                         ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
6648
6649                         DEBUG2(ql4_printk(KERN_INFO, ha,
6650                                           "Waiting for IP state for idx = %d, state = 0x%x\n",
6651                                           ip_idx[idx], ip_state));
6652                         if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
6653                             ip_state == IP_ADDRSTATE_INVALID ||
6654                             ip_state == IP_ADDRSTATE_PREFERRED ||
6655                             ip_state == IP_ADDRSTATE_DEPRICATED ||
6656                             ip_state == IP_ADDRSTATE_DISABLING)
6657                                 ip_idx[idx] = -1;
6658                 }
6659
6660                 /* Break if all IP states checked */
6661                 if ((ip_idx[0] == -1) &&
6662                     (ip_idx[1] == -1) &&
6663                     (ip_idx[2] == -1) &&
6664                     (ip_idx[3] == -1))
6665                         break;
6666                 schedule_timeout_uninterruptible(HZ);
6667         } while (time_after(wtime, jiffies));
6668 }
6669
6670 static int qla4xxx_cmp_fw_stentry(struct dev_db_entry *fw_ddb_entry,
6671                                   struct dev_db_entry *flash_ddb_entry)
6672 {
6673         uint16_t options = 0;
6674         size_t ip_len = IP_ADDR_LEN;
6675
6676         options = le16_to_cpu(fw_ddb_entry->options);
6677         if (options & DDB_OPT_IPV6_DEVICE)
6678                 ip_len = IPv6_ADDR_LEN;
6679
6680         if (memcmp(fw_ddb_entry->ip_addr, flash_ddb_entry->ip_addr, ip_len))
6681                 return QLA_ERROR;
6682
6683         if (memcmp(&fw_ddb_entry->isid[0], &flash_ddb_entry->isid[0],
6684                    sizeof(fw_ddb_entry->isid)))
6685                 return QLA_ERROR;
6686
6687         if (memcmp(&fw_ddb_entry->port, &flash_ddb_entry->port,
6688                    sizeof(fw_ddb_entry->port)))
6689                 return QLA_ERROR;
6690
6691         return QLA_SUCCESS;
6692 }
6693
6694 static int qla4xxx_find_flash_st_idx(struct scsi_qla_host *ha,
6695                                      struct dev_db_entry *fw_ddb_entry,
6696                                      uint32_t fw_idx, uint32_t *flash_index)
6697 {
6698         struct dev_db_entry *flash_ddb_entry;
6699         dma_addr_t flash_ddb_entry_dma;
6700         uint32_t idx = 0;
6701         int max_ddbs;
6702         int ret = QLA_ERROR, status;
6703
6704         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6705                                      MAX_DEV_DB_ENTRIES;
6706
6707         flash_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6708                                          &flash_ddb_entry_dma);
6709         if (flash_ddb_entry == NULL || fw_ddb_entry == NULL) {
6710                 ql4_printk(KERN_ERR, ha, "Out of memory\n");
6711                 goto exit_find_st_idx;
6712         }
6713
6714         status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
6715                                           flash_ddb_entry_dma, fw_idx);
6716         if (status == QLA_SUCCESS) {
6717                 status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
6718                 if (status == QLA_SUCCESS) {
6719                         *flash_index = fw_idx;
6720                         ret = QLA_SUCCESS;
6721                         goto exit_find_st_idx;
6722                 }
6723         }
6724
6725         for (idx = 0; idx < max_ddbs; idx++) {
6726                 status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
6727                                                   flash_ddb_entry_dma, idx);
6728                 if (status == QLA_ERROR)
6729                         continue;
6730
6731                 status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
6732                 if (status == QLA_SUCCESS) {
6733                         *flash_index = idx;
6734                         ret = QLA_SUCCESS;
6735                         goto exit_find_st_idx;
6736                 }
6737         }
6738
6739         if (idx == max_ddbs)
6740                 ql4_printk(KERN_ERR, ha, "Failed to find ST [%d] in flash\n",
6741                            fw_idx);
6742
6743 exit_find_st_idx:
6744         if (flash_ddb_entry)
6745                 dma_pool_free(ha->fw_ddb_dma_pool, flash_ddb_entry,
6746                               flash_ddb_entry_dma);
6747
6748         return ret;
6749 }
6750
6751 static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
6752                                   struct list_head *list_st)
6753 {
6754         struct qla_ddb_index  *st_ddb_idx;
6755         int max_ddbs;
6756         int fw_idx_size;
6757         struct dev_db_entry *fw_ddb_entry;
6758         dma_addr_t fw_ddb_dma;
6759         int ret;
6760         uint32_t idx = 0, next_idx = 0;
6761         uint32_t state = 0, conn_err = 0;
6762         uint32_t flash_index = -1;
6763         uint16_t conn_id = 0;
6764
6765         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6766                                       &fw_ddb_dma);
6767         if (fw_ddb_entry == NULL) {
6768                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
6769                 goto exit_st_list;
6770         }
6771
6772         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6773                                      MAX_DEV_DB_ENTRIES;
6774         fw_idx_size = sizeof(struct qla_ddb_index);
6775
6776         for (idx = 0; idx < max_ddbs; idx = next_idx) {
6777                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
6778                                               NULL, &next_idx, &state,
6779                                               &conn_err, NULL, &conn_id);
6780                 if (ret == QLA_ERROR)
6781                         break;
6782
6783                 /* Ignore DDB if invalid state (unassigned) */
6784                 if (state == DDB_DS_UNASSIGNED)
6785                         goto continue_next_st;
6786
6787                 /* Check if ST, add to the list_st */
6788                 if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
6789                         goto continue_next_st;
6790
6791                 st_ddb_idx = vzalloc(fw_idx_size);
6792                 if (!st_ddb_idx)
6793                         break;
6794
6795                 ret = qla4xxx_find_flash_st_idx(ha, fw_ddb_entry, idx,
6796                                                 &flash_index);
6797                 if (ret == QLA_ERROR) {
6798                         ql4_printk(KERN_ERR, ha,
6799                                    "No flash entry for ST at idx [%d]\n", idx);
6800                         st_ddb_idx->flash_ddb_idx = idx;
6801                 } else {
6802                         ql4_printk(KERN_INFO, ha,
6803                                    "ST at idx [%d] is stored at flash [%d]\n",
6804                                    idx, flash_index);
6805                         st_ddb_idx->flash_ddb_idx = flash_index;
6806                 }
6807
6808                 st_ddb_idx->fw_ddb_idx = idx;
6809
6810                 list_add_tail(&st_ddb_idx->list, list_st);
6811 continue_next_st:
6812                 if (next_idx == 0)
6813                         break;
6814         }
6815
6816 exit_st_list:
6817         if (fw_ddb_entry)
6818                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
6819 }
6820
6821 /**
6822  * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
6823  * @ha: pointer to adapter structure
6824  * @list_ddb: List from which failed ddb to be removed
6825  *
6826  * Iterate over the list of DDBs and find and remove DDBs that are either in
6827  * no connection active state or failed state
6828  **/
6829 static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
6830                                       struct list_head *list_ddb)
6831 {
6832         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6833         uint32_t next_idx = 0;
6834         uint32_t state = 0, conn_err = 0;
6835         int ret;
6836
6837         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6838                 ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
6839                                               NULL, 0, NULL, &next_idx, &state,
6840                                               &conn_err, NULL, NULL);
6841                 if (ret == QLA_ERROR)
6842                         continue;
6843
6844                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
6845                     state == DDB_DS_SESSION_FAILED) {
6846                         list_del_init(&ddb_idx->list);
6847                         vfree(ddb_idx);
6848                 }
6849         }
6850 }
6851
6852 static void qla4xxx_update_sess_disc_idx(struct scsi_qla_host *ha,
6853                                          struct ddb_entry *ddb_entry,
6854                                          struct dev_db_entry *fw_ddb_entry)
6855 {
6856         struct iscsi_cls_session *cls_sess;
6857         struct iscsi_session *sess;
6858         uint32_t max_ddbs = 0;
6859         uint16_t ddb_link = -1;
6860
6861         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6862                                      MAX_DEV_DB_ENTRIES;
6863
6864         cls_sess = ddb_entry->sess;
6865         sess = cls_sess->dd_data;
6866
6867         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
6868         if (ddb_link < max_ddbs)
6869                 sess->discovery_parent_idx = ddb_link;
6870         else
6871                 sess->discovery_parent_idx = DDB_NO_LINK;
6872 }
6873
6874 static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
6875                                    struct dev_db_entry *fw_ddb_entry,
6876                                    int is_reset, uint16_t idx)
6877 {
6878         struct iscsi_cls_session *cls_sess;
6879         struct iscsi_session *sess;
6880         struct iscsi_cls_conn *cls_conn;
6881         struct iscsi_endpoint *ep;
6882         uint16_t cmds_max = 32;
6883         uint16_t conn_id = 0;
6884         uint32_t initial_cmdsn = 0;
6885         int ret = QLA_SUCCESS;
6886
6887         struct ddb_entry *ddb_entry = NULL;
6888
6889         /* Create session object, with INVALID_ENTRY,
6890          * the targer_id would get set when we issue the login
6891          */
6892         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
6893                                        cmds_max, sizeof(struct ddb_entry),
6894                                        sizeof(struct ql4_task_data),
6895                                        initial_cmdsn, INVALID_ENTRY);
6896         if (!cls_sess) {
6897                 ret = QLA_ERROR;
6898                 goto exit_setup;
6899         }
6900
6901         /*
6902          * so calling module_put function to decrement the
6903          * reference count.
6904          **/
6905         module_put(qla4xxx_iscsi_transport.owner);
6906         sess = cls_sess->dd_data;
6907         ddb_entry = sess->dd_data;
6908         ddb_entry->sess = cls_sess;
6909
6910         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
6911         memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
6912                sizeof(struct dev_db_entry));
6913
6914         qla4xxx_setup_flash_ddb_entry(ha, ddb_entry, idx);
6915
6916         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
6917
6918         if (!cls_conn) {
6919                 ret = QLA_ERROR;
6920                 goto exit_setup;
6921         }
6922
6923         ddb_entry->conn = cls_conn;
6924
6925         /* Setup ep, for displaying attributes in sysfs */
6926         ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
6927         if (ep) {
6928                 ep->conn = cls_conn;
6929                 cls_conn->ep = ep;
6930         } else {
6931                 DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
6932                 ret = QLA_ERROR;
6933                 goto exit_setup;
6934         }
6935
6936         /* Update sess/conn params */
6937         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
6938         qla4xxx_update_sess_disc_idx(ha, ddb_entry, fw_ddb_entry);
6939
6940         if (is_reset == RESET_ADAPTER) {
6941                 iscsi_block_session(cls_sess);
6942                 /* Use the relogin path to discover new devices
6943                  *  by short-circuting the logic of setting
6944                  *  timer to relogin - instead set the flags
6945                  *  to initiate login right away.
6946                  */
6947                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
6948                 set_bit(DF_RELOGIN, &ddb_entry->flags);
6949         }
6950
6951 exit_setup:
6952         return ret;
6953 }
6954
6955 static void qla4xxx_update_fw_ddb_link(struct scsi_qla_host *ha,
6956                                        struct list_head *list_ddb,
6957                                        struct dev_db_entry *fw_ddb_entry)
6958 {
6959         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6960         uint16_t ddb_link;
6961
6962         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
6963
6964         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6965                 if (ddb_idx->fw_ddb_idx == ddb_link) {
6966                         DEBUG2(ql4_printk(KERN_INFO, ha,
6967                                           "Updating NT parent idx from [%d] to [%d]\n",
6968                                           ddb_link, ddb_idx->flash_ddb_idx));
6969                         fw_ddb_entry->ddb_link =
6970                                             cpu_to_le16(ddb_idx->flash_ddb_idx);
6971                         return;
6972                 }
6973         }
6974 }
6975
6976 static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
6977                                   struct list_head *list_nt,
6978                                   struct list_head *list_st,
6979                                   int is_reset)
6980 {
6981         struct dev_db_entry *fw_ddb_entry;
6982         struct ddb_entry *ddb_entry = NULL;
6983         dma_addr_t fw_ddb_dma;
6984         int max_ddbs;
6985         int fw_idx_size;
6986         int ret;
6987         uint32_t idx = 0, next_idx = 0;
6988         uint32_t state = 0, conn_err = 0;
6989         uint32_t ddb_idx = -1;
6990         uint16_t conn_id = 0;
6991         uint16_t ddb_link = -1;
6992         struct qla_ddb_index  *nt_ddb_idx;
6993
6994         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6995                                       &fw_ddb_dma);
6996         if (fw_ddb_entry == NULL) {
6997                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
6998                 goto exit_nt_list;
6999         }
7000         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
7001                                      MAX_DEV_DB_ENTRIES;
7002         fw_idx_size = sizeof(struct qla_ddb_index);
7003
7004         for (idx = 0; idx < max_ddbs; idx = next_idx) {
7005                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
7006                                               NULL, &next_idx, &state,
7007                                               &conn_err, NULL, &conn_id);
7008                 if (ret == QLA_ERROR)
7009                         break;
7010
7011                 if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
7012                         goto continue_next_nt;
7013
7014                 /* Check if NT, then add to list it */
7015                 if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
7016                         goto continue_next_nt;
7017
7018                 ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
7019                 if (ddb_link < max_ddbs)
7020                         qla4xxx_update_fw_ddb_link(ha, list_st, fw_ddb_entry);
7021
7022                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
7023                     state == DDB_DS_SESSION_FAILED) &&
7024                     (is_reset == INIT_ADAPTER))
7025                         goto continue_next_nt;
7026
7027                 DEBUG2(ql4_printk(KERN_INFO, ha,
7028                                   "Adding  DDB to session = 0x%x\n", idx));
7029
7030                 if (is_reset == INIT_ADAPTER) {
7031                         nt_ddb_idx = vmalloc(fw_idx_size);
7032                         if (!nt_ddb_idx)
7033                                 break;
7034
7035                         nt_ddb_idx->fw_ddb_idx = idx;
7036
7037                         /* Copy original isid as it may get updated in function
7038                          * qla4xxx_update_isid(). We need original isid in
7039                          * function qla4xxx_compare_tuple_ddb to find duplicate
7040                          * target */
7041                         memcpy(&nt_ddb_idx->flash_isid[0],
7042                                &fw_ddb_entry->isid[0],
7043                                sizeof(nt_ddb_idx->flash_isid));
7044
7045                         ret = qla4xxx_is_flash_ddb_exists(ha, list_nt,
7046                                                           fw_ddb_entry);
7047                         if (ret == QLA_SUCCESS) {
7048                                 /* free nt_ddb_idx and do not add to list_nt */
7049                                 vfree(nt_ddb_idx);
7050                                 goto continue_next_nt;
7051                         }
7052
7053                         /* Copy updated isid */
7054                         memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
7055                                sizeof(struct dev_db_entry));
7056
7057                         list_add_tail(&nt_ddb_idx->list, list_nt);
7058                 } else if (is_reset == RESET_ADAPTER) {
7059                         ret = qla4xxx_is_session_exists(ha, fw_ddb_entry,
7060                                                         &ddb_idx);
7061                         if (ret == QLA_SUCCESS) {
7062                                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
7063                                                                        ddb_idx);
7064                                 if (ddb_entry != NULL)
7065                                         qla4xxx_update_sess_disc_idx(ha,
7066                                                                      ddb_entry,
7067                                                                   fw_ddb_entry);
7068                                 goto continue_next_nt;
7069                         }
7070                 }
7071
7072                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset, idx);
7073                 if (ret == QLA_ERROR)
7074                         goto exit_nt_list;
7075
7076 continue_next_nt:
7077                 if (next_idx == 0)
7078                         break;
7079         }
7080
7081 exit_nt_list:
7082         if (fw_ddb_entry)
7083                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7084 }
7085
7086 static void qla4xxx_build_new_nt_list(struct scsi_qla_host *ha,
7087                                       struct list_head *list_nt,
7088                                       uint16_t target_id)
7089 {
7090         struct dev_db_entry *fw_ddb_entry;
7091         dma_addr_t fw_ddb_dma;
7092         int max_ddbs;
7093         int fw_idx_size;
7094         int ret;
7095         uint32_t idx = 0, next_idx = 0;
7096         uint32_t state = 0, conn_err = 0;
7097         uint16_t conn_id = 0;
7098         struct qla_ddb_index  *nt_ddb_idx;
7099
7100         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7101                                       &fw_ddb_dma);
7102         if (fw_ddb_entry == NULL) {
7103                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
7104                 goto exit_new_nt_list;
7105         }
7106         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
7107                                      MAX_DEV_DB_ENTRIES;
7108         fw_idx_size = sizeof(struct qla_ddb_index);
7109
7110         for (idx = 0; idx < max_ddbs; idx = next_idx) {
7111                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
7112                                               NULL, &next_idx, &state,
7113                                               &conn_err, NULL, &conn_id);
7114                 if (ret == QLA_ERROR)
7115                         break;
7116
7117                 /* Check if NT, then add it to list */
7118                 if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
7119                         goto continue_next_new_nt;
7120
7121                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE))
7122                         goto continue_next_new_nt;
7123
7124                 DEBUG2(ql4_printk(KERN_INFO, ha,
7125                                   "Adding  DDB to session = 0x%x\n", idx));
7126
7127                 nt_ddb_idx = vmalloc(fw_idx_size);
7128                 if (!nt_ddb_idx)
7129                         break;
7130
7131                 nt_ddb_idx->fw_ddb_idx = idx;
7132
7133                 ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
7134                 if (ret == QLA_SUCCESS) {
7135                         /* free nt_ddb_idx and do not add to list_nt */
7136                         vfree(nt_ddb_idx);
7137                         goto continue_next_new_nt;
7138                 }
7139
7140                 if (target_id < max_ddbs)
7141                         fw_ddb_entry->ddb_link = cpu_to_le16(target_id);
7142
7143                 list_add_tail(&nt_ddb_idx->list, list_nt);
7144
7145                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
7146                                               idx);
7147                 if (ret == QLA_ERROR)
7148                         goto exit_new_nt_list;
7149
7150 continue_next_new_nt:
7151                 if (next_idx == 0)
7152                         break;
7153         }
7154
7155 exit_new_nt_list:
7156         if (fw_ddb_entry)
7157                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7158 }
7159
7160 /**
7161  * qla4xxx_sysfs_ddb_is_non_persistent - check for non-persistence of ddb entry
7162  * @dev: dev associated with the sysfs entry
7163  * @data: pointer to flashnode session object
7164  *
7165  * Returns:
7166  *      1: if flashnode entry is non-persistent
7167  *      0: if flashnode entry is persistent
7168  **/
7169 static int qla4xxx_sysfs_ddb_is_non_persistent(struct device *dev, void *data)
7170 {
7171         struct iscsi_bus_flash_session *fnode_sess;
7172
7173         if (!iscsi_flashnode_bus_match(dev, NULL))
7174                 return 0;
7175
7176         fnode_sess = iscsi_dev_to_flash_session(dev);
7177
7178         return (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT);
7179 }
7180
7181 /**
7182  * qla4xxx_sysfs_ddb_tgt_create - Create sysfs entry for target
7183  * @ha: pointer to host
7184  * @fw_ddb_entry: flash ddb data
7185  * @idx: target index
7186  * @user: if set then this call is made from userland else from kernel
7187  *
7188  * Returns:
7189  * On sucess: QLA_SUCCESS
7190  * On failure: QLA_ERROR
7191  *
7192  * This create separate sysfs entries for session and connection attributes of
7193  * the given fw ddb entry.
7194  * If this is invoked as a result of a userspace call then the entry is marked
7195  * as nonpersistent using flash_state field.
7196  **/
7197 static int qla4xxx_sysfs_ddb_tgt_create(struct scsi_qla_host *ha,
7198                                         struct dev_db_entry *fw_ddb_entry,
7199                                         uint16_t *idx, int user)
7200 {
7201         struct iscsi_bus_flash_session *fnode_sess = NULL;
7202         struct iscsi_bus_flash_conn *fnode_conn = NULL;
7203         int rc = QLA_ERROR;
7204
7205         fnode_sess = iscsi_create_flashnode_sess(ha->host, *idx,
7206                                                  &qla4xxx_iscsi_transport, 0);
7207         if (!fnode_sess) {
7208                 ql4_printk(KERN_ERR, ha,
7209                            "%s: Unable to create session sysfs entry for flashnode %d of host%lu\n",
7210                            __func__, *idx, ha->host_no);
7211                 goto exit_tgt_create;
7212         }
7213
7214         fnode_conn = iscsi_create_flashnode_conn(ha->host, fnode_sess,
7215                                                  &qla4xxx_iscsi_transport, 0);
7216         if (!fnode_conn) {
7217                 ql4_printk(KERN_ERR, ha,
7218                            "%s: Unable to create conn sysfs entry for flashnode %d of host%lu\n",
7219                            __func__, *idx, ha->host_no);
7220                 goto free_sess;
7221         }
7222
7223         if (user) {
7224                 fnode_sess->flash_state = DEV_DB_NON_PERSISTENT;
7225         } else {
7226                 fnode_sess->flash_state = DEV_DB_PERSISTENT;
7227
7228                 if (*idx == ha->pri_ddb_idx || *idx == ha->sec_ddb_idx)
7229                         fnode_sess->is_boot_target = 1;
7230                 else
7231                         fnode_sess->is_boot_target = 0;
7232         }
7233
7234         rc = qla4xxx_copy_from_fwddb_param(fnode_sess, fnode_conn,
7235                                            fw_ddb_entry);
7236         if (rc)
7237                 goto free_sess;
7238
7239         ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
7240                    __func__, fnode_sess->dev.kobj.name);
7241
7242         ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
7243                    __func__, fnode_conn->dev.kobj.name);
7244
7245         return QLA_SUCCESS;
7246
7247 free_sess:
7248         iscsi_destroy_flashnode_sess(fnode_sess);
7249
7250 exit_tgt_create:
7251         return QLA_ERROR;
7252 }
7253
7254 /**
7255  * qla4xxx_sysfs_ddb_add - Add new ddb entry in flash
7256  * @shost: pointer to host
7257  * @buf: type of ddb entry (ipv4/ipv6)
7258  * @len: length of buf
7259  *
7260  * This creates new ddb entry in the flash by finding first free index and
7261  * storing default ddb there. And then create sysfs entry for the new ddb entry.
7262  **/
7263 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
7264                                  int len)
7265 {
7266         struct scsi_qla_host *ha = to_qla_host(shost);
7267         struct dev_db_entry *fw_ddb_entry = NULL;
7268         dma_addr_t fw_ddb_entry_dma;
7269         struct device *dev;
7270         uint16_t idx = 0;
7271         uint16_t max_ddbs = 0;
7272         uint32_t options = 0;
7273         uint32_t rval = QLA_ERROR;
7274
7275         if (strncasecmp(PORTAL_TYPE_IPV4, buf, 4) &&
7276             strncasecmp(PORTAL_TYPE_IPV6, buf, 4)) {
7277                 DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Invalid portal type\n",
7278                                   __func__));
7279                 goto exit_ddb_add;
7280         }
7281
7282         max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
7283                                      MAX_DEV_DB_ENTRIES;
7284
7285         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7286                                           &fw_ddb_entry_dma, GFP_KERNEL);
7287         if (!fw_ddb_entry) {
7288                 DEBUG2(ql4_printk(KERN_ERR, ha,
7289                                   "%s: Unable to allocate dma buffer\n",
7290                                   __func__));
7291                 goto exit_ddb_add;
7292         }
7293
7294         dev = iscsi_find_flashnode_sess(ha->host, NULL,
7295                                         qla4xxx_sysfs_ddb_is_non_persistent);
7296         if (dev) {
7297                 ql4_printk(KERN_ERR, ha,
7298                            "%s: A non-persistent entry %s found\n",
7299                            __func__, dev->kobj.name);
7300                 put_device(dev);
7301                 goto exit_ddb_add;
7302         }
7303
7304         /* Index 0 and 1 are reserved for boot target entries */
7305         for (idx = 2; idx < max_ddbs; idx++) {
7306                 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry,
7307                                              fw_ddb_entry_dma, idx))
7308                         break;
7309         }
7310
7311         if (idx == max_ddbs)
7312                 goto exit_ddb_add;
7313
7314         if (!strncasecmp("ipv6", buf, 4))
7315                 options |= IPV6_DEFAULT_DDB_ENTRY;
7316
7317         rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7318         if (rval == QLA_ERROR)
7319                 goto exit_ddb_add;
7320
7321         rval = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 1);
7322
7323 exit_ddb_add:
7324         if (fw_ddb_entry)
7325                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7326                                   fw_ddb_entry, fw_ddb_entry_dma);
7327         if (rval == QLA_SUCCESS)
7328                 return idx;
7329         else
7330                 return -EIO;
7331 }
7332
7333 /**
7334  * qla4xxx_sysfs_ddb_apply - write the target ddb contents to Flash
7335  * @fnode_sess: pointer to session attrs of flash ddb entry
7336  * @fnode_conn: pointer to connection attrs of flash ddb entry
7337  *
7338  * This writes the contents of target ddb buffer to Flash with a valid cookie
7339  * value in order to make the ddb entry persistent.
7340  **/
7341 static int  qla4xxx_sysfs_ddb_apply(struct iscsi_bus_flash_session *fnode_sess,
7342                                     struct iscsi_bus_flash_conn *fnode_conn)
7343 {
7344         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7345         struct scsi_qla_host *ha = to_qla_host(shost);
7346         uint32_t dev_db_start_offset = FLASH_OFFSET_DB_INFO;
7347         struct dev_db_entry *fw_ddb_entry = NULL;
7348         dma_addr_t fw_ddb_entry_dma;
7349         uint32_t options = 0;
7350         int rval = 0;
7351
7352         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7353                                           &fw_ddb_entry_dma, GFP_KERNEL);
7354         if (!fw_ddb_entry) {
7355                 DEBUG2(ql4_printk(KERN_ERR, ha,
7356                                   "%s: Unable to allocate dma buffer\n",
7357                                   __func__));
7358                 rval = -ENOMEM;
7359                 goto exit_ddb_apply;
7360         }
7361
7362         if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7363                 options |= IPV6_DEFAULT_DDB_ENTRY;
7364
7365         rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7366         if (rval == QLA_ERROR)
7367                 goto exit_ddb_apply;
7368
7369         dev_db_start_offset += (fnode_sess->target_id *
7370                                 sizeof(*fw_ddb_entry));
7371
7372         qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
7373         fw_ddb_entry->cookie = DDB_VALID_COOKIE;
7374
7375         rval = qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
7376                                  sizeof(*fw_ddb_entry), FLASH_OPT_RMW_COMMIT);
7377
7378         if (rval == QLA_SUCCESS) {
7379                 fnode_sess->flash_state = DEV_DB_PERSISTENT;
7380                 ql4_printk(KERN_INFO, ha,
7381                            "%s: flash node %u of host %lu written to flash\n",
7382                            __func__, fnode_sess->target_id, ha->host_no);
7383         } else {
7384                 rval = -EIO;
7385                 ql4_printk(KERN_ERR, ha,
7386                            "%s: Error while writing flash node %u of host %lu to flash\n",
7387                            __func__, fnode_sess->target_id, ha->host_no);
7388         }
7389
7390 exit_ddb_apply:
7391         if (fw_ddb_entry)
7392                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7393                                   fw_ddb_entry, fw_ddb_entry_dma);
7394         return rval;
7395 }
7396
7397 static ssize_t qla4xxx_sysfs_ddb_conn_open(struct scsi_qla_host *ha,
7398                                            struct dev_db_entry *fw_ddb_entry,
7399                                            uint16_t idx)
7400 {
7401         struct dev_db_entry *ddb_entry = NULL;
7402         dma_addr_t ddb_entry_dma;
7403         unsigned long wtime;
7404         uint32_t mbx_sts = 0;
7405         uint32_t state = 0, conn_err = 0;
7406         uint16_t tmo = 0;
7407         int ret = 0;
7408
7409         ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
7410                                        &ddb_entry_dma, GFP_KERNEL);
7411         if (!ddb_entry) {
7412                 DEBUG2(ql4_printk(KERN_ERR, ha,
7413                                   "%s: Unable to allocate dma buffer\n",
7414                                   __func__));
7415                 return QLA_ERROR;
7416         }
7417
7418         memcpy(ddb_entry, fw_ddb_entry, sizeof(*ddb_entry));
7419
7420         ret = qla4xxx_set_ddb_entry(ha, idx, ddb_entry_dma, &mbx_sts);
7421         if (ret != QLA_SUCCESS) {
7422                 DEBUG2(ql4_printk(KERN_ERR, ha,
7423                                   "%s: Unable to set ddb entry for index %d\n",
7424                                   __func__, idx));
7425                 goto exit_ddb_conn_open;
7426         }
7427
7428         qla4xxx_conn_open(ha, idx);
7429
7430         /* To ensure that sendtargets is done, wait for at least 12 secs */
7431         tmo = ((ha->def_timeout > LOGIN_TOV) &&
7432                (ha->def_timeout < LOGIN_TOV * 10) ?
7433                ha->def_timeout : LOGIN_TOV);
7434
7435         DEBUG2(ql4_printk(KERN_INFO, ha,
7436                           "Default time to wait for login to ddb %d\n", tmo));
7437
7438         wtime = jiffies + (HZ * tmo);
7439         do {
7440                 ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
7441                                               NULL, &state, &conn_err, NULL,
7442                                               NULL);
7443                 if (ret == QLA_ERROR)
7444                         continue;
7445
7446                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
7447                     state == DDB_DS_SESSION_FAILED)
7448                         break;
7449
7450                 schedule_timeout_uninterruptible(HZ / 10);
7451         } while (time_after(wtime, jiffies));
7452
7453 exit_ddb_conn_open:
7454         if (ddb_entry)
7455                 dma_free_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
7456                                   ddb_entry, ddb_entry_dma);
7457         return ret;
7458 }
7459
7460 static int qla4xxx_ddb_login_st(struct scsi_qla_host *ha,
7461                                 struct dev_db_entry *fw_ddb_entry,
7462                                 uint16_t target_id)
7463 {
7464         struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
7465         struct list_head list_nt;
7466         uint16_t ddb_index;
7467         int ret = 0;
7468
7469         if (test_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags)) {
7470                 ql4_printk(KERN_WARNING, ha,
7471                            "%s: A discovery already in progress!\n", __func__);
7472                 return QLA_ERROR;
7473         }
7474
7475         INIT_LIST_HEAD(&list_nt);
7476
7477         set_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
7478
7479         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
7480         if (ret == QLA_ERROR)
7481                 goto exit_login_st_clr_bit;
7482
7483         ret = qla4xxx_sysfs_ddb_conn_open(ha, fw_ddb_entry, ddb_index);
7484         if (ret == QLA_ERROR)
7485                 goto exit_login_st;
7486
7487         qla4xxx_build_new_nt_list(ha, &list_nt, target_id);
7488
7489         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, &list_nt, list) {
7490                 list_del_init(&ddb_idx->list);
7491                 qla4xxx_clear_ddb_entry(ha, ddb_idx->fw_ddb_idx);
7492                 vfree(ddb_idx);
7493         }
7494
7495 exit_login_st:
7496         if (qla4xxx_clear_ddb_entry(ha, ddb_index) == QLA_ERROR) {
7497                 ql4_printk(KERN_ERR, ha,
7498                            "Unable to clear DDB index = 0x%x\n", ddb_index);
7499         }
7500
7501         clear_bit(ddb_index, ha->ddb_idx_map);
7502
7503 exit_login_st_clr_bit:
7504         clear_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
7505         return ret;
7506 }
7507
7508 static int qla4xxx_ddb_login_nt(struct scsi_qla_host *ha,
7509                                 struct dev_db_entry *fw_ddb_entry,
7510                                 uint16_t idx)
7511 {
7512         int ret = QLA_ERROR;
7513
7514         ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
7515         if (ret != QLA_SUCCESS)
7516                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
7517                                               idx);
7518         else
7519                 ret = -EPERM;
7520
7521         return ret;
7522 }
7523
7524 /**
7525  * qla4xxx_sysfs_ddb_login - Login to the specified target
7526  * @fnode_sess: pointer to session attrs of flash ddb entry
7527  * @fnode_conn: pointer to connection attrs of flash ddb entry
7528  *
7529  * This logs in to the specified target
7530  **/
7531 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
7532                                    struct iscsi_bus_flash_conn *fnode_conn)
7533 {
7534         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7535         struct scsi_qla_host *ha = to_qla_host(shost);
7536         struct dev_db_entry *fw_ddb_entry = NULL;
7537         dma_addr_t fw_ddb_entry_dma;
7538         uint32_t options = 0;
7539         int ret = 0;
7540
7541         if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT) {
7542                 ql4_printk(KERN_ERR, ha,
7543                            "%s: Target info is not persistent\n", __func__);
7544                 ret = -EIO;
7545                 goto exit_ddb_login;
7546         }
7547
7548         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7549                                           &fw_ddb_entry_dma, GFP_KERNEL);
7550         if (!fw_ddb_entry) {
7551                 DEBUG2(ql4_printk(KERN_ERR, ha,
7552                                   "%s: Unable to allocate dma buffer\n",
7553                                   __func__));
7554                 ret = -ENOMEM;
7555                 goto exit_ddb_login;
7556         }
7557
7558         if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7559                 options |= IPV6_DEFAULT_DDB_ENTRY;
7560
7561         ret = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7562         if (ret == QLA_ERROR)
7563                 goto exit_ddb_login;
7564
7565         qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
7566         fw_ddb_entry->cookie = DDB_VALID_COOKIE;
7567
7568         if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
7569                 ret = qla4xxx_ddb_login_st(ha, fw_ddb_entry,
7570                                            fnode_sess->target_id);
7571         else
7572                 ret = qla4xxx_ddb_login_nt(ha, fw_ddb_entry,
7573                                            fnode_sess->target_id);
7574
7575         if (ret > 0)
7576                 ret = -EIO;
7577
7578 exit_ddb_login:
7579         if (fw_ddb_entry)
7580                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7581                                   fw_ddb_entry, fw_ddb_entry_dma);
7582         return ret;
7583 }
7584
7585 /**
7586  * qla4xxx_sysfs_ddb_logout_sid - Logout session for the specified target
7587  * @cls_sess: pointer to session to be logged out
7588  *
7589  * This performs session log out from the specified target
7590  **/
7591 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess)
7592 {
7593         struct iscsi_session *sess;
7594         struct ddb_entry *ddb_entry = NULL;
7595         struct scsi_qla_host *ha;
7596         struct dev_db_entry *fw_ddb_entry = NULL;
7597         dma_addr_t fw_ddb_entry_dma;
7598         unsigned long flags;
7599         unsigned long wtime;
7600         uint32_t ddb_state;
7601         int options;
7602         int ret = 0;
7603
7604         sess = cls_sess->dd_data;
7605         ddb_entry = sess->dd_data;
7606         ha = ddb_entry->ha;
7607
7608         if (ddb_entry->ddb_type != FLASH_DDB) {
7609                 ql4_printk(KERN_ERR, ha, "%s: Not a flash node session\n",
7610                            __func__);
7611                 ret = -ENXIO;
7612                 goto exit_ddb_logout;
7613         }
7614
7615         if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
7616                 ql4_printk(KERN_ERR, ha,
7617                            "%s: Logout from boot target entry is not permitted.\n",
7618                            __func__);
7619                 ret = -EPERM;
7620                 goto exit_ddb_logout;
7621         }
7622
7623         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7624                                           &fw_ddb_entry_dma, GFP_KERNEL);
7625         if (!fw_ddb_entry) {
7626                 ql4_printk(KERN_ERR, ha,
7627                            "%s: Unable to allocate dma buffer\n", __func__);
7628                 ret = -ENOMEM;
7629                 goto exit_ddb_logout;
7630         }
7631
7632         if (test_and_set_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
7633                 goto ddb_logout_init;
7634
7635         ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
7636                                       fw_ddb_entry, fw_ddb_entry_dma,
7637                                       NULL, NULL, &ddb_state, NULL,
7638                                       NULL, NULL);
7639         if (ret == QLA_ERROR)
7640                 goto ddb_logout_init;
7641
7642         if (ddb_state == DDB_DS_SESSION_ACTIVE)
7643                 goto ddb_logout_init;
7644
7645         /* wait until next relogin is triggered using DF_RELOGIN and
7646          * clear DF_RELOGIN to avoid invocation of further relogin
7647          */
7648         wtime = jiffies + (HZ * RELOGIN_TOV);
7649         do {
7650                 if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags))
7651                         goto ddb_logout_init;
7652
7653                 schedule_timeout_uninterruptible(HZ);
7654         } while ((time_after(wtime, jiffies)));
7655
7656 ddb_logout_init:
7657         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
7658         atomic_set(&ddb_entry->relogin_timer, 0);
7659
7660         options = LOGOUT_OPTION_CLOSE_SESSION;
7661         qla4xxx_session_logout_ddb(ha, ddb_entry, options);
7662
7663         memset(fw_ddb_entry, 0, sizeof(*fw_ddb_entry));
7664         wtime = jiffies + (HZ * LOGOUT_TOV);
7665         do {
7666                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
7667                                               fw_ddb_entry, fw_ddb_entry_dma,
7668                                               NULL, NULL, &ddb_state, NULL,
7669                                               NULL, NULL);
7670                 if (ret == QLA_ERROR)
7671                         goto ddb_logout_clr_sess;
7672
7673                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
7674                     (ddb_state == DDB_DS_SESSION_FAILED))
7675                         goto ddb_logout_clr_sess;
7676
7677                 schedule_timeout_uninterruptible(HZ);
7678         } while ((time_after(wtime, jiffies)));
7679
7680 ddb_logout_clr_sess:
7681         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
7682         /*
7683          * we have decremented the reference count of the driver
7684          * when we setup the session to have the driver unload
7685          * to be seamless without actually destroying the
7686          * session
7687          **/
7688         try_module_get(qla4xxx_iscsi_transport.owner);
7689         iscsi_destroy_endpoint(ddb_entry->conn->ep);
7690
7691         spin_lock_irqsave(&ha->hardware_lock, flags);
7692         qla4xxx_free_ddb(ha, ddb_entry);
7693         clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
7694         spin_unlock_irqrestore(&ha->hardware_lock, flags);
7695
7696         iscsi_session_teardown(ddb_entry->sess);
7697
7698         clear_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags);
7699         ret = QLA_SUCCESS;
7700
7701 exit_ddb_logout:
7702         if (fw_ddb_entry)
7703                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7704                                   fw_ddb_entry, fw_ddb_entry_dma);
7705         return ret;
7706 }
7707
7708 /**
7709  * qla4xxx_sysfs_ddb_logout - Logout from the specified target
7710  * @fnode_sess: pointer to session attrs of flash ddb entry
7711  * @fnode_conn: pointer to connection attrs of flash ddb entry
7712  *
7713  * This performs log out from the specified target
7714  **/
7715 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
7716                                     struct iscsi_bus_flash_conn *fnode_conn)
7717 {
7718         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7719         struct scsi_qla_host *ha = to_qla_host(shost);
7720         struct ql4_tuple_ddb *flash_tddb = NULL;
7721         struct ql4_tuple_ddb *tmp_tddb = NULL;
7722         struct dev_db_entry *fw_ddb_entry = NULL;
7723         struct ddb_entry *ddb_entry = NULL;
7724         dma_addr_t fw_ddb_dma;
7725         uint32_t next_idx = 0;
7726         uint32_t state = 0, conn_err = 0;
7727         uint16_t conn_id = 0;
7728         int idx, index;
7729         int status, ret = 0;
7730
7731         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7732                                       &fw_ddb_dma);
7733         if (fw_ddb_entry == NULL) {
7734                 ql4_printk(KERN_ERR, ha, "%s:Out of memory\n", __func__);
7735                 ret = -ENOMEM;
7736                 goto exit_ddb_logout;
7737         }
7738
7739         flash_tddb = vzalloc(sizeof(*flash_tddb));
7740         if (!flash_tddb) {
7741                 ql4_printk(KERN_WARNING, ha,
7742                            "%s:Memory Allocation failed.\n", __func__);
7743                 ret = -ENOMEM;
7744                 goto exit_ddb_logout;
7745         }
7746
7747         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
7748         if (!tmp_tddb) {
7749                 ql4_printk(KERN_WARNING, ha,
7750                            "%s:Memory Allocation failed.\n", __func__);
7751                 ret = -ENOMEM;
7752                 goto exit_ddb_logout;
7753         }
7754
7755         if (!fnode_sess->targetname) {
7756                 ql4_printk(KERN_ERR, ha,
7757                            "%s:Cannot logout from SendTarget entry\n",
7758                            __func__);
7759                 ret = -EPERM;
7760                 goto exit_ddb_logout;
7761         }
7762
7763         if (fnode_sess->is_boot_target) {
7764                 ql4_printk(KERN_ERR, ha,
7765                            "%s: Logout from boot target entry is not permitted.\n",
7766                            __func__);
7767                 ret = -EPERM;
7768                 goto exit_ddb_logout;
7769         }
7770
7771         strlcpy(flash_tddb->iscsi_name, fnode_sess->targetname,
7772                 ISCSI_NAME_SIZE);
7773
7774         if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7775                 sprintf(flash_tddb->ip_addr, "%pI6", fnode_conn->ipaddress);
7776         else
7777                 sprintf(flash_tddb->ip_addr, "%pI4", fnode_conn->ipaddress);
7778
7779         flash_tddb->tpgt = fnode_sess->tpgt;
7780         flash_tddb->port = fnode_conn->port;
7781
7782         COPY_ISID(flash_tddb->isid, fnode_sess->isid);
7783
7784         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
7785                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
7786                 if (ddb_entry == NULL)
7787                         continue;
7788
7789                 if (ddb_entry->ddb_type != FLASH_DDB)
7790                         continue;
7791
7792                 index = ddb_entry->sess->target_id;
7793                 status = qla4xxx_get_fwddb_entry(ha, index, fw_ddb_entry,
7794                                                  fw_ddb_dma, NULL, &next_idx,
7795                                                  &state, &conn_err, NULL,
7796                                                  &conn_id);
7797                 if (status == QLA_ERROR) {
7798                         ret = -ENOMEM;
7799                         break;
7800                 }
7801
7802                 qla4xxx_convert_param_ddb(fw_ddb_entry, tmp_tddb, NULL);
7803
7804                 status = qla4xxx_compare_tuple_ddb(ha, flash_tddb, tmp_tddb,
7805                                                    true);
7806                 if (status == QLA_SUCCESS) {
7807                         ret = qla4xxx_sysfs_ddb_logout_sid(ddb_entry->sess);
7808                         break;
7809                 }
7810         }
7811
7812         if (idx == MAX_DDB_ENTRIES)
7813                 ret = -ESRCH;
7814
7815 exit_ddb_logout:
7816         if (flash_tddb)
7817                 vfree(flash_tddb);
7818         if (tmp_tddb)
7819                 vfree(tmp_tddb);
7820         if (fw_ddb_entry)
7821                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7822
7823         return ret;
7824 }
7825
7826 static int
7827 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
7828                             int param, char *buf)
7829 {
7830         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7831         struct scsi_qla_host *ha = to_qla_host(shost);
7832         struct iscsi_bus_flash_conn *fnode_conn;
7833         struct ql4_chap_table chap_tbl;
7834         struct device *dev;
7835         int parent_type;
7836         int rc = 0;
7837
7838         dev = iscsi_find_flashnode_conn(fnode_sess);
7839         if (!dev)
7840                 return -EIO;
7841
7842         fnode_conn = iscsi_dev_to_flash_conn(dev);
7843
7844         switch (param) {
7845         case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
7846                 rc = sprintf(buf, "%u\n", fnode_conn->is_fw_assigned_ipv6);
7847                 break;
7848         case ISCSI_FLASHNODE_PORTAL_TYPE:
7849                 rc = sprintf(buf, "%s\n", fnode_sess->portal_type);
7850                 break;
7851         case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
7852                 rc = sprintf(buf, "%u\n", fnode_sess->auto_snd_tgt_disable);
7853                 break;
7854         case ISCSI_FLASHNODE_DISCOVERY_SESS:
7855                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_sess);
7856                 break;
7857         case ISCSI_FLASHNODE_ENTRY_EN:
7858                 rc = sprintf(buf, "%u\n", fnode_sess->entry_state);
7859                 break;
7860         case ISCSI_FLASHNODE_HDR_DGST_EN:
7861                 rc = sprintf(buf, "%u\n", fnode_conn->hdrdgst_en);
7862                 break;
7863         case ISCSI_FLASHNODE_DATA_DGST_EN:
7864                 rc = sprintf(buf, "%u\n", fnode_conn->datadgst_en);
7865                 break;
7866         case ISCSI_FLASHNODE_IMM_DATA_EN:
7867                 rc = sprintf(buf, "%u\n", fnode_sess->imm_data_en);
7868                 break;
7869         case ISCSI_FLASHNODE_INITIAL_R2T_EN:
7870                 rc = sprintf(buf, "%u\n", fnode_sess->initial_r2t_en);
7871                 break;
7872         case ISCSI_FLASHNODE_DATASEQ_INORDER:
7873                 rc = sprintf(buf, "%u\n", fnode_sess->dataseq_inorder_en);
7874                 break;
7875         case ISCSI_FLASHNODE_PDU_INORDER:
7876                 rc = sprintf(buf, "%u\n", fnode_sess->pdu_inorder_en);
7877                 break;
7878         case ISCSI_FLASHNODE_CHAP_AUTH_EN:
7879                 rc = sprintf(buf, "%u\n", fnode_sess->chap_auth_en);
7880                 break;
7881         case ISCSI_FLASHNODE_SNACK_REQ_EN:
7882                 rc = sprintf(buf, "%u\n", fnode_conn->snack_req_en);
7883                 break;
7884         case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
7885                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_logout_en);
7886                 break;
7887         case ISCSI_FLASHNODE_BIDI_CHAP_EN:
7888                 rc = sprintf(buf, "%u\n", fnode_sess->bidi_chap_en);
7889                 break;
7890         case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
7891                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_auth_optional);
7892                 break;
7893         case ISCSI_FLASHNODE_ERL:
7894                 rc = sprintf(buf, "%u\n", fnode_sess->erl);
7895                 break;
7896         case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
7897                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_stat);
7898                 break;
7899         case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
7900                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_nagle_disable);
7901                 break;
7902         case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
7903                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_wsf_disable);
7904                 break;
7905         case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
7906                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timer_scale);
7907                 break;
7908         case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
7909                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_en);
7910                 break;
7911         case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
7912                 rc = sprintf(buf, "%u\n", fnode_conn->fragment_disable);
7913                 break;
7914         case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
7915                 rc = sprintf(buf, "%u\n", fnode_conn->max_recv_dlength);
7916                 break;
7917         case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
7918                 rc = sprintf(buf, "%u\n", fnode_conn->max_xmit_dlength);
7919                 break;
7920         case ISCSI_FLASHNODE_FIRST_BURST:
7921                 rc = sprintf(buf, "%u\n", fnode_sess->first_burst);
7922                 break;
7923         case ISCSI_FLASHNODE_DEF_TIME2WAIT:
7924                 rc = sprintf(buf, "%u\n", fnode_sess->time2wait);
7925                 break;
7926         case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
7927                 rc = sprintf(buf, "%u\n", fnode_sess->time2retain);
7928                 break;
7929         case ISCSI_FLASHNODE_MAX_R2T:
7930                 rc = sprintf(buf, "%u\n", fnode_sess->max_r2t);
7931                 break;
7932         case ISCSI_FLASHNODE_KEEPALIVE_TMO:
7933                 rc = sprintf(buf, "%u\n", fnode_conn->keepalive_timeout);
7934                 break;
7935         case ISCSI_FLASHNODE_ISID:
7936                 rc = sprintf(buf, "%pm\n", fnode_sess->isid);
7937                 break;
7938         case ISCSI_FLASHNODE_TSID:
7939                 rc = sprintf(buf, "%u\n", fnode_sess->tsid);
7940                 break;
7941         case ISCSI_FLASHNODE_PORT:
7942                 rc = sprintf(buf, "%d\n", fnode_conn->port);
7943                 break;
7944         case ISCSI_FLASHNODE_MAX_BURST:
7945                 rc = sprintf(buf, "%u\n", fnode_sess->max_burst);
7946                 break;
7947         case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
7948                 rc = sprintf(buf, "%u\n",
7949                              fnode_sess->default_taskmgmt_timeout);
7950                 break;
7951         case ISCSI_FLASHNODE_IPADDR:
7952                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7953                         rc = sprintf(buf, "%pI6\n", fnode_conn->ipaddress);
7954                 else
7955                         rc = sprintf(buf, "%pI4\n", fnode_conn->ipaddress);
7956                 break;
7957         case ISCSI_FLASHNODE_ALIAS:
7958                 if (fnode_sess->targetalias)
7959                         rc = sprintf(buf, "%s\n", fnode_sess->targetalias);
7960                 else
7961                         rc = sprintf(buf, "\n");
7962                 break;
7963         case ISCSI_FLASHNODE_REDIRECT_IPADDR:
7964                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7965                         rc = sprintf(buf, "%pI6\n",
7966                                      fnode_conn->redirect_ipaddr);
7967                 else
7968                         rc = sprintf(buf, "%pI4\n",
7969                                      fnode_conn->redirect_ipaddr);
7970                 break;
7971         case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
7972                 rc = sprintf(buf, "%u\n", fnode_conn->max_segment_size);
7973                 break;
7974         case ISCSI_FLASHNODE_LOCAL_PORT:
7975                 rc = sprintf(buf, "%u\n", fnode_conn->local_port);
7976                 break;
7977         case ISCSI_FLASHNODE_IPV4_TOS:
7978                 rc = sprintf(buf, "%u\n", fnode_conn->ipv4_tos);
7979                 break;
7980         case ISCSI_FLASHNODE_IPV6_TC:
7981                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7982                         rc = sprintf(buf, "%u\n",
7983                                      fnode_conn->ipv6_traffic_class);
7984                 else
7985                         rc = sprintf(buf, "\n");
7986                 break;
7987         case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
7988                 rc = sprintf(buf, "%u\n", fnode_conn->ipv6_flow_label);
7989                 break;
7990         case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
7991                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7992                         rc = sprintf(buf, "%pI6\n",
7993                                      fnode_conn->link_local_ipv6_addr);
7994                 else
7995                         rc = sprintf(buf, "\n");
7996                 break;
7997         case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
7998                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_parent_idx);
7999                 break;
8000         case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
8001                 if (fnode_sess->discovery_parent_type == DDB_ISNS)
8002                         parent_type = ISCSI_DISC_PARENT_ISNS;
8003                 else if (fnode_sess->discovery_parent_type == DDB_NO_LINK)
8004                         parent_type = ISCSI_DISC_PARENT_UNKNOWN;
8005                 else if (fnode_sess->discovery_parent_type < MAX_DDB_ENTRIES)
8006                         parent_type = ISCSI_DISC_PARENT_SENDTGT;
8007                 else
8008                         parent_type = ISCSI_DISC_PARENT_UNKNOWN;
8009
8010                 rc = sprintf(buf, "%s\n",
8011                              iscsi_get_discovery_parent_name(parent_type));
8012                 break;
8013         case ISCSI_FLASHNODE_NAME:
8014                 if (fnode_sess->targetname)
8015                         rc = sprintf(buf, "%s\n", fnode_sess->targetname);
8016                 else
8017                         rc = sprintf(buf, "\n");
8018                 break;
8019         case ISCSI_FLASHNODE_TPGT:
8020                 rc = sprintf(buf, "%u\n", fnode_sess->tpgt);
8021                 break;
8022         case ISCSI_FLASHNODE_TCP_XMIT_WSF:
8023                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_xmit_wsf);
8024                 break;
8025         case ISCSI_FLASHNODE_TCP_RECV_WSF:
8026                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_recv_wsf);
8027                 break;
8028         case ISCSI_FLASHNODE_CHAP_OUT_IDX:
8029                 rc = sprintf(buf, "%u\n", fnode_sess->chap_out_idx);
8030                 break;
8031         case ISCSI_FLASHNODE_USERNAME:
8032                 if (fnode_sess->chap_auth_en) {
8033                         qla4xxx_get_uni_chap_at_index(ha,
8034                                                       chap_tbl.name,
8035                                                       chap_tbl.secret,
8036                                                       fnode_sess->chap_out_idx);
8037                         rc = sprintf(buf, "%s\n", chap_tbl.name);
8038                 } else {
8039                         rc = sprintf(buf, "\n");
8040                 }
8041                 break;
8042         case ISCSI_FLASHNODE_PASSWORD:
8043                 if (fnode_sess->chap_auth_en) {
8044                         qla4xxx_get_uni_chap_at_index(ha,
8045                                                       chap_tbl.name,
8046                                                       chap_tbl.secret,
8047                                                       fnode_sess->chap_out_idx);
8048                         rc = sprintf(buf, "%s\n", chap_tbl.secret);
8049                 } else {
8050                         rc = sprintf(buf, "\n");
8051                 }
8052                 break;
8053         case ISCSI_FLASHNODE_STATSN:
8054                 rc = sprintf(buf, "%u\n", fnode_conn->statsn);
8055                 break;
8056         case ISCSI_FLASHNODE_EXP_STATSN:
8057                 rc = sprintf(buf, "%u\n", fnode_conn->exp_statsn);
8058                 break;
8059         case ISCSI_FLASHNODE_IS_BOOT_TGT:
8060                 rc = sprintf(buf, "%u\n", fnode_sess->is_boot_target);
8061                 break;
8062         default:
8063                 rc = -ENOSYS;
8064                 break;
8065         }
8066
8067         put_device(dev);
8068         return rc;
8069 }
8070
8071 /**
8072  * qla4xxx_sysfs_ddb_set_param - Set parameter for firmware DDB entry
8073  * @fnode_sess: pointer to session attrs of flash ddb entry
8074  * @fnode_conn: pointer to connection attrs of flash ddb entry
8075  * @data: Parameters and their values to update
8076  * @len: len of data
8077  *
8078  * This sets the parameter of flash ddb entry and writes them to flash
8079  **/
8080 static int
8081 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
8082                             struct iscsi_bus_flash_conn *fnode_conn,
8083                             void *data, int len)
8084 {
8085         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
8086         struct scsi_qla_host *ha = to_qla_host(shost);
8087         struct iscsi_flashnode_param_info *fnode_param;
8088         struct ql4_chap_table chap_tbl;
8089         struct nlattr *attr;
8090         uint16_t chap_out_idx = INVALID_ENTRY;
8091         int rc = QLA_ERROR;
8092         uint32_t rem = len;
8093
8094         memset((void *)&chap_tbl, 0, sizeof(chap_tbl));
8095         nla_for_each_attr(attr, data, len, rem) {
8096                 fnode_param = nla_data(attr);
8097
8098                 switch (fnode_param->param) {
8099                 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
8100                         fnode_conn->is_fw_assigned_ipv6 = fnode_param->value[0];
8101                         break;
8102                 case ISCSI_FLASHNODE_PORTAL_TYPE:
8103                         memcpy(fnode_sess->portal_type, fnode_param->value,
8104                                strlen(fnode_sess->portal_type));
8105                         break;
8106                 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
8107                         fnode_sess->auto_snd_tgt_disable =
8108                                                         fnode_param->value[0];
8109                         break;
8110                 case ISCSI_FLASHNODE_DISCOVERY_SESS:
8111                         fnode_sess->discovery_sess = fnode_param->value[0];
8112                         break;
8113                 case ISCSI_FLASHNODE_ENTRY_EN:
8114                         fnode_sess->entry_state = fnode_param->value[0];
8115                         break;
8116                 case ISCSI_FLASHNODE_HDR_DGST_EN:
8117                         fnode_conn->hdrdgst_en = fnode_param->value[0];
8118                         break;
8119                 case ISCSI_FLASHNODE_DATA_DGST_EN:
8120                         fnode_conn->datadgst_en = fnode_param->value[0];
8121                         break;
8122                 case ISCSI_FLASHNODE_IMM_DATA_EN:
8123                         fnode_sess->imm_data_en = fnode_param->value[0];
8124                         break;
8125                 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
8126                         fnode_sess->initial_r2t_en = fnode_param->value[0];
8127                         break;
8128                 case ISCSI_FLASHNODE_DATASEQ_INORDER:
8129                         fnode_sess->dataseq_inorder_en = fnode_param->value[0];
8130                         break;
8131                 case ISCSI_FLASHNODE_PDU_INORDER:
8132                         fnode_sess->pdu_inorder_en = fnode_param->value[0];
8133                         break;
8134                 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
8135                         fnode_sess->chap_auth_en = fnode_param->value[0];
8136                         /* Invalidate chap index if chap auth is disabled */
8137                         if (!fnode_sess->chap_auth_en)
8138                                 fnode_sess->chap_out_idx = INVALID_ENTRY;
8139
8140                         break;
8141                 case ISCSI_FLASHNODE_SNACK_REQ_EN:
8142                         fnode_conn->snack_req_en = fnode_param->value[0];
8143                         break;
8144                 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
8145                         fnode_sess->discovery_logout_en = fnode_param->value[0];
8146                         break;
8147                 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
8148                         fnode_sess->bidi_chap_en = fnode_param->value[0];
8149                         break;
8150                 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
8151                         fnode_sess->discovery_auth_optional =
8152                                                         fnode_param->value[0];
8153                         break;
8154                 case ISCSI_FLASHNODE_ERL:
8155                         fnode_sess->erl = fnode_param->value[0];
8156                         break;
8157                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
8158                         fnode_conn->tcp_timestamp_stat = fnode_param->value[0];
8159                         break;
8160                 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
8161                         fnode_conn->tcp_nagle_disable = fnode_param->value[0];
8162                         break;
8163                 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
8164                         fnode_conn->tcp_wsf_disable = fnode_param->value[0];
8165                         break;
8166                 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
8167                         fnode_conn->tcp_timer_scale = fnode_param->value[0];
8168                         break;
8169                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
8170                         fnode_conn->tcp_timestamp_en = fnode_param->value[0];
8171                         break;
8172                 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
8173                         fnode_conn->fragment_disable = fnode_param->value[0];
8174                         break;
8175                 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
8176                         fnode_conn->max_recv_dlength =
8177                                         *(unsigned *)fnode_param->value;
8178                         break;
8179                 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
8180                         fnode_conn->max_xmit_dlength =
8181                                         *(unsigned *)fnode_param->value;
8182                         break;
8183                 case ISCSI_FLASHNODE_FIRST_BURST:
8184                         fnode_sess->first_burst =
8185                                         *(unsigned *)fnode_param->value;
8186                         break;
8187                 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
8188                         fnode_sess->time2wait = *(uint16_t *)fnode_param->value;
8189                         break;
8190                 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
8191                         fnode_sess->time2retain =
8192                                                 *(uint16_t *)fnode_param->value;
8193                         break;
8194                 case ISCSI_FLASHNODE_MAX_R2T:
8195                         fnode_sess->max_r2t =
8196                                         *(uint16_t *)fnode_param->value;
8197                         break;
8198                 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
8199                         fnode_conn->keepalive_timeout =
8200                                 *(uint16_t *)fnode_param->value;
8201                         break;
8202                 case ISCSI_FLASHNODE_ISID:
8203                         memcpy(fnode_sess->isid, fnode_param->value,
8204                                sizeof(fnode_sess->isid));
8205                         break;
8206                 case ISCSI_FLASHNODE_TSID:
8207                         fnode_sess->tsid = *(uint16_t *)fnode_param->value;
8208                         break;
8209                 case ISCSI_FLASHNODE_PORT:
8210                         fnode_conn->port = *(uint16_t *)fnode_param->value;
8211                         break;
8212                 case ISCSI_FLASHNODE_MAX_BURST:
8213                         fnode_sess->max_burst = *(unsigned *)fnode_param->value;
8214                         break;
8215                 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
8216                         fnode_sess->default_taskmgmt_timeout =
8217                                                 *(uint16_t *)fnode_param->value;
8218                         break;
8219                 case ISCSI_FLASHNODE_IPADDR:
8220                         memcpy(fnode_conn->ipaddress, fnode_param->value,
8221                                IPv6_ADDR_LEN);
8222                         break;
8223                 case ISCSI_FLASHNODE_ALIAS:
8224                         rc = iscsi_switch_str_param(&fnode_sess->targetalias,
8225                                                     (char *)fnode_param->value);
8226                         break;
8227                 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
8228                         memcpy(fnode_conn->redirect_ipaddr, fnode_param->value,
8229                                IPv6_ADDR_LEN);
8230                         break;
8231                 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
8232                         fnode_conn->max_segment_size =
8233                                         *(unsigned *)fnode_param->value;
8234                         break;
8235                 case ISCSI_FLASHNODE_LOCAL_PORT:
8236                         fnode_conn->local_port =
8237                                                 *(uint16_t *)fnode_param->value;
8238                         break;
8239                 case ISCSI_FLASHNODE_IPV4_TOS:
8240                         fnode_conn->ipv4_tos = fnode_param->value[0];
8241                         break;
8242                 case ISCSI_FLASHNODE_IPV6_TC:
8243                         fnode_conn->ipv6_traffic_class = fnode_param->value[0];
8244                         break;
8245                 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
8246                         fnode_conn->ipv6_flow_label = fnode_param->value[0];
8247                         break;
8248                 case ISCSI_FLASHNODE_NAME:
8249                         rc = iscsi_switch_str_param(&fnode_sess->targetname,
8250                                                     (char *)fnode_param->value);
8251                         break;
8252                 case ISCSI_FLASHNODE_TPGT:
8253                         fnode_sess->tpgt = *(uint16_t *)fnode_param->value;
8254                         break;
8255                 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
8256                         memcpy(fnode_conn->link_local_ipv6_addr,
8257                                fnode_param->value, IPv6_ADDR_LEN);
8258                         break;
8259                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
8260                         fnode_sess->discovery_parent_idx =
8261                                                 *(uint16_t *)fnode_param->value;
8262                         break;
8263                 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
8264                         fnode_conn->tcp_xmit_wsf =
8265                                                 *(uint8_t *)fnode_param->value;
8266                         break;
8267                 case ISCSI_FLASHNODE_TCP_RECV_WSF:
8268                         fnode_conn->tcp_recv_wsf =
8269                                                 *(uint8_t *)fnode_param->value;
8270                         break;
8271                 case ISCSI_FLASHNODE_STATSN:
8272                         fnode_conn->statsn = *(uint32_t *)fnode_param->value;
8273                         break;
8274                 case ISCSI_FLASHNODE_EXP_STATSN:
8275                         fnode_conn->exp_statsn =
8276                                                 *(uint32_t *)fnode_param->value;
8277                         break;
8278                 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
8279                         chap_out_idx = *(uint16_t *)fnode_param->value;
8280                         if (!qla4xxx_get_uni_chap_at_index(ha,
8281                                                            chap_tbl.name,
8282                                                            chap_tbl.secret,
8283                                                            chap_out_idx)) {
8284                                 fnode_sess->chap_out_idx = chap_out_idx;
8285                                 /* Enable chap auth if chap index is valid */
8286                                 fnode_sess->chap_auth_en = QL4_PARAM_ENABLE;
8287                         }
8288                         break;
8289                 default:
8290                         ql4_printk(KERN_ERR, ha,
8291                                    "%s: No such sysfs attribute\n", __func__);
8292                         rc = -ENOSYS;
8293                         goto exit_set_param;
8294                 }
8295         }
8296
8297         rc = qla4xxx_sysfs_ddb_apply(fnode_sess, fnode_conn);
8298
8299 exit_set_param:
8300         return rc;
8301 }
8302
8303 /**
8304  * qla4xxx_sysfs_ddb_delete - Delete firmware DDB entry
8305  * @fnode_sess: pointer to session attrs of flash ddb entry
8306  *
8307  * This invalidates the flash ddb entry at the given index
8308  **/
8309 static int qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess)
8310 {
8311         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
8312         struct scsi_qla_host *ha = to_qla_host(shost);
8313         uint32_t dev_db_start_offset;
8314         uint32_t dev_db_end_offset;
8315         struct dev_db_entry *fw_ddb_entry = NULL;
8316         dma_addr_t fw_ddb_entry_dma;
8317         uint16_t *ddb_cookie = NULL;
8318         size_t ddb_size = 0;
8319         void *pddb = NULL;
8320         int target_id;
8321         int rc = 0;
8322
8323         if (fnode_sess->is_boot_target) {
8324                 rc = -EPERM;
8325                 DEBUG2(ql4_printk(KERN_ERR, ha,
8326                                   "%s: Deletion of boot target entry is not permitted.\n",
8327                                   __func__));
8328                 goto exit_ddb_del;
8329         }
8330
8331         if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT)
8332                 goto sysfs_ddb_del;
8333
8334         if (is_qla40XX(ha)) {
8335                 dev_db_start_offset = FLASH_OFFSET_DB_INFO;
8336                 dev_db_end_offset = FLASH_OFFSET_DB_END;
8337                 dev_db_start_offset += (fnode_sess->target_id *
8338                                        sizeof(*fw_ddb_entry));
8339                 ddb_size = sizeof(*fw_ddb_entry);
8340         } else {
8341                 dev_db_start_offset = FLASH_RAW_ACCESS_ADDR +
8342                                       (ha->hw.flt_region_ddb << 2);
8343                 /* flt_ddb_size is DDB table size for both ports
8344                  * so divide it by 2 to calculate the offset for second port
8345                  */
8346                 if (ha->port_num == 1)
8347                         dev_db_start_offset += (ha->hw.flt_ddb_size / 2);
8348
8349                 dev_db_end_offset = dev_db_start_offset +
8350                                     (ha->hw.flt_ddb_size / 2);
8351
8352                 dev_db_start_offset += (fnode_sess->target_id *
8353                                        sizeof(*fw_ddb_entry));
8354                 dev_db_start_offset += offsetof(struct dev_db_entry, cookie);
8355
8356                 ddb_size = sizeof(*ddb_cookie);
8357         }
8358
8359         DEBUG2(ql4_printk(KERN_ERR, ha, "%s: start offset=%u, end offset=%u\n",
8360                           __func__, dev_db_start_offset, dev_db_end_offset));
8361
8362         if (dev_db_start_offset > dev_db_end_offset) {
8363                 rc = -EIO;
8364                 DEBUG2(ql4_printk(KERN_ERR, ha, "%s:Invalid DDB index %u\n",
8365                                   __func__, fnode_sess->target_id));
8366                 goto exit_ddb_del;
8367         }
8368
8369         pddb = dma_alloc_coherent(&ha->pdev->dev, ddb_size,
8370                                   &fw_ddb_entry_dma, GFP_KERNEL);
8371         if (!pddb) {
8372                 rc = -ENOMEM;
8373                 DEBUG2(ql4_printk(KERN_ERR, ha,
8374                                   "%s: Unable to allocate dma buffer\n",
8375                                   __func__));
8376                 goto exit_ddb_del;
8377         }
8378
8379         if (is_qla40XX(ha)) {
8380                 fw_ddb_entry = pddb;
8381                 memset(fw_ddb_entry, 0, ddb_size);
8382                 ddb_cookie = &fw_ddb_entry->cookie;
8383         } else {
8384                 ddb_cookie = pddb;
8385         }
8386
8387         /* invalidate the cookie */
8388         *ddb_cookie = 0xFFEE;
8389         qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
8390                           ddb_size, FLASH_OPT_RMW_COMMIT);
8391
8392 sysfs_ddb_del:
8393         target_id = fnode_sess->target_id;
8394         iscsi_destroy_flashnode_sess(fnode_sess);
8395         ql4_printk(KERN_INFO, ha,
8396                    "%s: session and conn entries for flashnode %u of host %lu deleted\n",
8397                    __func__, target_id, ha->host_no);
8398 exit_ddb_del:
8399         if (pddb)
8400                 dma_free_coherent(&ha->pdev->dev, ddb_size, pddb,
8401                                   fw_ddb_entry_dma);
8402         return rc;
8403 }
8404
8405 /**
8406  * qla4xxx_sysfs_ddb_export - Create sysfs entries for firmware DDBs
8407  * @ha: pointer to adapter structure
8408  *
8409  * Export the firmware DDB for all send targets and normal targets to sysfs.
8410  **/
8411 int qla4xxx_sysfs_ddb_export(struct scsi_qla_host *ha)
8412 {
8413         struct dev_db_entry *fw_ddb_entry = NULL;
8414         dma_addr_t fw_ddb_entry_dma;
8415         uint16_t max_ddbs;
8416         uint16_t idx = 0;
8417         int ret = QLA_SUCCESS;
8418
8419         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
8420                                           sizeof(*fw_ddb_entry),
8421                                           &fw_ddb_entry_dma, GFP_KERNEL);
8422         if (!fw_ddb_entry) {
8423                 DEBUG2(ql4_printk(KERN_ERR, ha,
8424                                   "%s: Unable to allocate dma buffer\n",
8425                                   __func__));
8426                 return -ENOMEM;
8427         }
8428
8429         max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
8430                                      MAX_DEV_DB_ENTRIES;
8431
8432         for (idx = 0; idx < max_ddbs; idx++) {
8433                 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry, fw_ddb_entry_dma,
8434                                              idx))
8435                         continue;
8436
8437                 ret = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 0);
8438                 if (ret) {
8439                         ret = -EIO;
8440                         break;
8441                 }
8442         }
8443
8444         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
8445                           fw_ddb_entry_dma);
8446
8447         return ret;
8448 }
8449
8450 static void qla4xxx_sysfs_ddb_remove(struct scsi_qla_host *ha)
8451 {
8452         iscsi_destroy_all_flashnode(ha->host);
8453 }
8454
8455 /**
8456  * qla4xxx_build_ddb_list - Build ddb list and setup sessions
8457  * @ha: pointer to adapter structure
8458  * @is_reset: Is this init path or reset path
8459  *
8460  * Create a list of sendtargets (st) from firmware DDBs, issue send targets
8461  * using connection open, then create the list of normal targets (nt)
8462  * from firmware DDBs. Based on the list of nt setup session and connection
8463  * objects.
8464  **/
8465 void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
8466 {
8467         uint16_t tmo = 0;
8468         struct list_head list_st, list_nt;
8469         struct qla_ddb_index  *st_ddb_idx, *st_ddb_idx_tmp;
8470         unsigned long wtime;
8471
8472         if (!test_bit(AF_LINK_UP, &ha->flags)) {
8473                 set_bit(AF_BUILD_DDB_LIST, &ha->flags);
8474                 ha->is_reset = is_reset;
8475                 return;
8476         }
8477
8478         INIT_LIST_HEAD(&list_st);
8479         INIT_LIST_HEAD(&list_nt);
8480
8481         qla4xxx_build_st_list(ha, &list_st);
8482
8483         /* Before issuing conn open mbox, ensure all IPs states are configured
8484          * Note, conn open fails if IPs are not configured
8485          */
8486         qla4xxx_wait_for_ip_configuration(ha);
8487
8488         /* Go thru the STs and fire the sendtargets by issuing conn open mbx */
8489         list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
8490                 qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
8491         }
8492
8493         /* Wait to ensure all sendtargets are done for min 12 sec wait */
8494         tmo = ((ha->def_timeout > LOGIN_TOV) &&
8495                (ha->def_timeout < LOGIN_TOV * 10) ?
8496                ha->def_timeout : LOGIN_TOV);
8497
8498         DEBUG2(ql4_printk(KERN_INFO, ha,
8499                           "Default time to wait for build ddb %d\n", tmo));
8500
8501         wtime = jiffies + (HZ * tmo);
8502         do {
8503                 if (list_empty(&list_st))
8504                         break;
8505
8506                 qla4xxx_remove_failed_ddb(ha, &list_st);
8507                 schedule_timeout_uninterruptible(HZ / 10);
8508         } while (time_after(wtime, jiffies));
8509
8510
8511         qla4xxx_build_nt_list(ha, &list_nt, &list_st, is_reset);
8512
8513         qla4xxx_free_ddb_list(&list_st);
8514         qla4xxx_free_ddb_list(&list_nt);
8515
8516         qla4xxx_free_ddb_index(ha);
8517 }
8518
8519 /**
8520  * qla4xxx_wait_login_resp_boot_tgt -  Wait for iSCSI boot target login
8521  * response.
8522  * @ha: pointer to adapter structure
8523  *
8524  * When the boot entry is normal iSCSI target then DF_BOOT_TGT flag will be
8525  * set in DDB and we will wait for login response of boot targets during
8526  * probe.
8527  **/
8528 static void qla4xxx_wait_login_resp_boot_tgt(struct scsi_qla_host *ha)
8529 {
8530         struct ddb_entry *ddb_entry;
8531         struct dev_db_entry *fw_ddb_entry = NULL;
8532         dma_addr_t fw_ddb_entry_dma;
8533         unsigned long wtime;
8534         uint32_t ddb_state;
8535         int max_ddbs, idx, ret;
8536
8537         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
8538                                      MAX_DEV_DB_ENTRIES;
8539
8540         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8541                                           &fw_ddb_entry_dma, GFP_KERNEL);
8542         if (!fw_ddb_entry) {
8543                 ql4_printk(KERN_ERR, ha,
8544                            "%s: Unable to allocate dma buffer\n", __func__);
8545                 goto exit_login_resp;
8546         }
8547
8548         wtime = jiffies + (HZ * BOOT_LOGIN_RESP_TOV);
8549
8550         for (idx = 0; idx < max_ddbs; idx++) {
8551                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
8552                 if (ddb_entry == NULL)
8553                         continue;
8554
8555                 if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
8556                         DEBUG2(ql4_printk(KERN_INFO, ha,
8557                                           "%s: DDB index [%d]\n", __func__,
8558                                           ddb_entry->fw_ddb_index));
8559                         do {
8560                                 ret = qla4xxx_get_fwddb_entry(ha,
8561                                                 ddb_entry->fw_ddb_index,
8562                                                 fw_ddb_entry, fw_ddb_entry_dma,
8563                                                 NULL, NULL, &ddb_state, NULL,
8564                                                 NULL, NULL);
8565                                 if (ret == QLA_ERROR)
8566                                         goto exit_login_resp;
8567
8568                                 if ((ddb_state == DDB_DS_SESSION_ACTIVE) ||
8569                                     (ddb_state == DDB_DS_SESSION_FAILED))
8570                                         break;
8571
8572                                 schedule_timeout_uninterruptible(HZ);
8573
8574                         } while ((time_after(wtime, jiffies)));
8575
8576                         if (!time_after(wtime, jiffies)) {
8577                                 DEBUG2(ql4_printk(KERN_INFO, ha,
8578                                                   "%s: Login response wait timer expired\n",
8579                                                   __func__));
8580                                  goto exit_login_resp;
8581                         }
8582                 }
8583         }
8584
8585 exit_login_resp:
8586         if (fw_ddb_entry)
8587                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8588                                   fw_ddb_entry, fw_ddb_entry_dma);
8589 }
8590
8591 /**
8592  * qla4xxx_probe_adapter - callback function to probe HBA
8593  * @pdev: pointer to pci_dev structure
8594  * @pci_device_id: pointer to pci_device entry
8595  *
8596  * This routine will probe for Qlogic 4xxx iSCSI host adapters.
8597  * It returns zero if successful. It also initializes all data necessary for
8598  * the driver.
8599  **/
8600 static int qla4xxx_probe_adapter(struct pci_dev *pdev,
8601                                  const struct pci_device_id *ent)
8602 {
8603         int ret = -ENODEV, status;
8604         struct Scsi_Host *host;
8605         struct scsi_qla_host *ha;
8606         uint8_t init_retry_count = 0;
8607         char buf[34];
8608         struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
8609         uint32_t dev_state;
8610
8611         if (pci_enable_device(pdev))
8612                 return -1;
8613
8614         host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
8615         if (host == NULL) {
8616                 printk(KERN_WARNING
8617                        "qla4xxx: Couldn't allocate host from scsi layer!\n");
8618                 goto probe_disable_device;
8619         }
8620
8621         /* Clear our data area */
8622         ha = to_qla_host(host);
8623         memset(ha, 0, sizeof(*ha));
8624
8625         /* Save the information from PCI BIOS.  */
8626         ha->pdev = pdev;
8627         ha->host = host;
8628         ha->host_no = host->host_no;
8629         ha->func_num = PCI_FUNC(ha->pdev->devfn);
8630
8631         pci_enable_pcie_error_reporting(pdev);
8632
8633         /* Setup Runtime configurable options */
8634         if (is_qla8022(ha)) {
8635                 ha->isp_ops = &qla4_82xx_isp_ops;
8636                 ha->reg_tbl = (uint32_t *) qla4_82xx_reg_tbl;
8637                 ha->qdr_sn_window = -1;
8638                 ha->ddr_mn_window = -1;
8639                 ha->curr_window = 255;
8640                 nx_legacy_intr = &legacy_intr[ha->func_num];
8641                 ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
8642                 ha->nx_legacy_intr.tgt_status_reg =
8643                         nx_legacy_intr->tgt_status_reg;
8644                 ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
8645                 ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
8646         } else if (is_qla8032(ha) || is_qla8042(ha)) {
8647                 ha->isp_ops = &qla4_83xx_isp_ops;
8648                 ha->reg_tbl = (uint32_t *)qla4_83xx_reg_tbl;
8649         } else {
8650                 ha->isp_ops = &qla4xxx_isp_ops;
8651         }
8652
8653         if (is_qla80XX(ha)) {
8654                 rwlock_init(&ha->hw_lock);
8655                 ha->pf_bit = ha->func_num << 16;
8656                 /* Set EEH reset type to fundamental if required by hba */
8657                 pdev->needs_freset = 1;
8658         }
8659
8660         /* Configure PCI I/O space. */
8661         ret = ha->isp_ops->iospace_config(ha);
8662         if (ret)
8663                 goto probe_failed_ioconfig;
8664
8665         ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
8666                    pdev->device, pdev->irq, ha->reg);
8667
8668         qla4xxx_config_dma_addressing(ha);
8669
8670         /* Initialize lists and spinlocks. */
8671         INIT_LIST_HEAD(&ha->free_srb_q);
8672
8673         mutex_init(&ha->mbox_sem);
8674         mutex_init(&ha->chap_sem);
8675         init_completion(&ha->mbx_intr_comp);
8676         init_completion(&ha->disable_acb_comp);
8677         init_completion(&ha->idc_comp);
8678         init_completion(&ha->link_up_comp);
8679
8680         spin_lock_init(&ha->hardware_lock);
8681         spin_lock_init(&ha->work_lock);
8682
8683         /* Initialize work list */
8684         INIT_LIST_HEAD(&ha->work_list);
8685
8686         /* Allocate dma buffers */
8687         if (qla4xxx_mem_alloc(ha)) {
8688                 ql4_printk(KERN_WARNING, ha,
8689                     "[ERROR] Failed to allocate memory for adapter\n");
8690
8691                 ret = -ENOMEM;
8692                 goto probe_failed;
8693         }
8694
8695         host->cmd_per_lun = 3;
8696         host->max_channel = 0;
8697         host->max_lun = MAX_LUNS - 1;
8698         host->max_id = MAX_TARGETS;
8699         host->max_cmd_len = IOCB_MAX_CDB_LEN;
8700         host->can_queue = MAX_SRBS ;
8701         host->transportt = qla4xxx_scsi_transport;
8702
8703         pci_set_drvdata(pdev, ha);
8704
8705         ret = scsi_add_host(host, &pdev->dev);
8706         if (ret)
8707                 goto probe_failed;
8708
8709         if (is_qla80XX(ha))
8710                 qla4_8xxx_get_flash_info(ha);
8711
8712         if (is_qla8032(ha) || is_qla8042(ha)) {
8713                 qla4_83xx_read_reset_template(ha);
8714                 /*
8715                  * NOTE: If ql4dontresethba==1, set IDC_CTRL DONTRESET_BIT0.
8716                  * If DONRESET_BIT0 is set, drivers should not set dev_state
8717                  * to NEED_RESET. But if NEED_RESET is set, drivers should
8718                  * should honor the reset.
8719                  */
8720                 if (ql4xdontresethba == 1)
8721                         qla4_83xx_set_idc_dontreset(ha);
8722         }
8723
8724         /*
8725          * Initialize the Host adapter request/response queues and
8726          * firmware
8727          * NOTE: interrupts enabled upon successful completion
8728          */
8729         status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
8730
8731         /* Dont retry adapter initialization if IRQ allocation failed */
8732         if (is_qla80XX(ha) && (status == QLA_ERROR))
8733                 goto skip_retry_init;
8734
8735         while ((!test_bit(AF_ONLINE, &ha->flags)) &&
8736             init_retry_count++ < MAX_INIT_RETRIES) {
8737
8738                 if (is_qla80XX(ha)) {
8739                         ha->isp_ops->idc_lock(ha);
8740                         dev_state = qla4_8xxx_rd_direct(ha,
8741                                                         QLA8XXX_CRB_DEV_STATE);
8742                         ha->isp_ops->idc_unlock(ha);
8743                         if (dev_state == QLA8XXX_DEV_FAILED) {
8744                                 ql4_printk(KERN_WARNING, ha, "%s: don't retry "
8745                                     "initialize adapter. H/W is in failed state\n",
8746                                     __func__);
8747                                 break;
8748                         }
8749                 }
8750                 DEBUG2(printk("scsi: %s: retrying adapter initialization "
8751                               "(%d)\n", __func__, init_retry_count));
8752
8753                 if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
8754                         continue;
8755
8756                 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
8757                 if (is_qla80XX(ha) && (status == QLA_ERROR)) {
8758                         if (qla4_8xxx_check_init_adapter_retry(ha) == QLA_ERROR)
8759                                 goto skip_retry_init;
8760                 }
8761         }
8762
8763 skip_retry_init:
8764         if (!test_bit(AF_ONLINE, &ha->flags)) {
8765                 ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
8766
8767                 if ((is_qla8022(ha) && ql4xdontresethba) ||
8768                     ((is_qla8032(ha) || is_qla8042(ha)) &&
8769                      qla4_83xx_idc_dontreset(ha))) {
8770                         /* Put the device in failed state. */
8771                         DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
8772                         ha->isp_ops->idc_lock(ha);
8773                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
8774                                             QLA8XXX_DEV_FAILED);
8775                         ha->isp_ops->idc_unlock(ha);
8776                 }
8777                 ret = -ENODEV;
8778                 goto remove_host;
8779         }
8780
8781         /* Startup the kernel thread for this host adapter. */
8782         DEBUG2(printk("scsi: %s: Starting kernel thread for "
8783                       "qla4xxx_dpc\n", __func__));
8784         sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
8785         ha->dpc_thread = create_singlethread_workqueue(buf);
8786         if (!ha->dpc_thread) {
8787                 ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
8788                 ret = -ENODEV;
8789                 goto remove_host;
8790         }
8791         INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
8792
8793         ha->task_wq = alloc_workqueue("qla4xxx_%lu_task", WQ_MEM_RECLAIM, 1,
8794                                       ha->host_no);
8795         if (!ha->task_wq) {
8796                 ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
8797                 ret = -ENODEV;
8798                 goto remove_host;
8799         }
8800
8801         /*
8802          * For ISP-8XXX, request_irqs is called in qla4_8xxx_load_risc
8803          * (which is called indirectly by qla4xxx_initialize_adapter),
8804          * so that irqs will be registered after crbinit but before
8805          * mbx_intr_enable.
8806          */
8807         if (is_qla40XX(ha)) {
8808                 ret = qla4xxx_request_irqs(ha);
8809                 if (ret) {
8810                         ql4_printk(KERN_WARNING, ha, "Failed to reserve "
8811                             "interrupt %d already in use.\n", pdev->irq);
8812                         goto remove_host;
8813                 }
8814         }
8815
8816         pci_save_state(ha->pdev);
8817         ha->isp_ops->enable_intrs(ha);
8818
8819         /* Start timer thread. */
8820         qla4xxx_start_timer(ha, 1);
8821
8822         set_bit(AF_INIT_DONE, &ha->flags);
8823
8824         qla4_8xxx_alloc_sysfs_attr(ha);
8825
8826         printk(KERN_INFO
8827                " QLogic iSCSI HBA Driver version: %s\n"
8828                "  QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
8829                qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
8830                ha->host_no, ha->fw_info.fw_major, ha->fw_info.fw_minor,
8831                ha->fw_info.fw_patch, ha->fw_info.fw_build);
8832
8833         /* Set the driver version */
8834         if (is_qla80XX(ha))
8835                 qla4_8xxx_set_param(ha, SET_DRVR_VERSION);
8836
8837         if (qla4xxx_setup_boot_info(ha))
8838                 ql4_printk(KERN_ERR, ha,
8839                            "%s: No iSCSI boot target configured\n", __func__);
8840
8841         set_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags);
8842         /* Perform the build ddb list and login to each */
8843         qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
8844         iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
8845         qla4xxx_wait_login_resp_boot_tgt(ha);
8846
8847         qla4xxx_create_chap_list(ha);
8848
8849         qla4xxx_create_ifaces(ha);
8850         return 0;
8851
8852 remove_host:
8853         scsi_remove_host(ha->host);
8854
8855 probe_failed:
8856         qla4xxx_free_adapter(ha);
8857
8858 probe_failed_ioconfig:
8859         pci_disable_pcie_error_reporting(pdev);
8860         scsi_host_put(ha->host);
8861
8862 probe_disable_device:
8863         pci_disable_device(pdev);
8864
8865         return ret;
8866 }
8867
8868 /**
8869  * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
8870  * @ha: pointer to adapter structure
8871  *
8872  * Mark the other ISP-4xxx port to indicate that the driver is being removed,
8873  * so that the other port will not re-initialize while in the process of
8874  * removing the ha due to driver unload or hba hotplug.
8875  **/
8876 static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
8877 {
8878         struct scsi_qla_host *other_ha = NULL;
8879         struct pci_dev *other_pdev = NULL;
8880         int fn = ISP4XXX_PCI_FN_2;
8881
8882         /*iscsi function numbers for ISP4xxx is 1 and 3*/
8883         if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
8884                 fn = ISP4XXX_PCI_FN_1;
8885
8886         other_pdev =
8887                 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
8888                 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
8889                 fn));
8890
8891         /* Get other_ha if other_pdev is valid and state is enable*/
8892         if (other_pdev) {
8893                 if (atomic_read(&other_pdev->enable_cnt)) {
8894                         other_ha = pci_get_drvdata(other_pdev);
8895                         if (other_ha) {
8896                                 set_bit(AF_HA_REMOVAL, &other_ha->flags);
8897                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
8898                                     "Prevent %s reinit\n", __func__,
8899                                     dev_name(&other_ha->pdev->dev)));
8900                         }
8901                 }
8902                 pci_dev_put(other_pdev);
8903         }
8904 }
8905
8906 static void qla4xxx_destroy_ddb(struct scsi_qla_host *ha,
8907                 struct ddb_entry *ddb_entry)
8908 {
8909         struct dev_db_entry *fw_ddb_entry = NULL;
8910         dma_addr_t fw_ddb_entry_dma;
8911         unsigned long wtime;
8912         uint32_t ddb_state;
8913         int options;
8914         int status;
8915
8916         options = LOGOUT_OPTION_CLOSE_SESSION;
8917         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR) {
8918                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
8919                 goto clear_ddb;
8920         }
8921
8922         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8923                                           &fw_ddb_entry_dma, GFP_KERNEL);
8924         if (!fw_ddb_entry) {
8925                 ql4_printk(KERN_ERR, ha,
8926                            "%s: Unable to allocate dma buffer\n", __func__);
8927                 goto clear_ddb;
8928         }
8929
8930         wtime = jiffies + (HZ * LOGOUT_TOV);
8931         do {
8932                 status = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
8933                                                  fw_ddb_entry, fw_ddb_entry_dma,
8934                                                  NULL, NULL, &ddb_state, NULL,
8935                                                  NULL, NULL);
8936                 if (status == QLA_ERROR)
8937                         goto free_ddb;
8938
8939                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
8940                     (ddb_state == DDB_DS_SESSION_FAILED))
8941                         goto free_ddb;
8942
8943                 schedule_timeout_uninterruptible(HZ);
8944         } while ((time_after(wtime, jiffies)));
8945
8946 free_ddb:
8947         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8948                           fw_ddb_entry, fw_ddb_entry_dma);
8949 clear_ddb:
8950         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
8951 }
8952
8953 static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
8954 {
8955         struct ddb_entry *ddb_entry;
8956         int idx;
8957
8958         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
8959
8960                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
8961                 if ((ddb_entry != NULL) &&
8962                     (ddb_entry->ddb_type == FLASH_DDB)) {
8963
8964                         qla4xxx_destroy_ddb(ha, ddb_entry);
8965                         /*
8966                          * we have decremented the reference count of the driver
8967                          * when we setup the session to have the driver unload
8968                          * to be seamless without actually destroying the
8969                          * session
8970                          **/
8971                         try_module_get(qla4xxx_iscsi_transport.owner);
8972                         iscsi_destroy_endpoint(ddb_entry->conn->ep);
8973                         qla4xxx_free_ddb(ha, ddb_entry);
8974                         iscsi_session_teardown(ddb_entry->sess);
8975                 }
8976         }
8977 }
8978 /**
8979  * qla4xxx_remove_adapter - callback function to remove adapter.
8980  * @pci_dev: PCI device pointer
8981  **/
8982 static void qla4xxx_remove_adapter(struct pci_dev *pdev)
8983 {
8984         struct scsi_qla_host *ha;
8985
8986         /*
8987          * If the PCI device is disabled then it means probe_adapter had
8988          * failed and resources already cleaned up on probe_adapter exit.
8989          */
8990         if (!pci_is_enabled(pdev))
8991                 return;
8992
8993         ha = pci_get_drvdata(pdev);
8994
8995         if (is_qla40XX(ha))
8996                 qla4xxx_prevent_other_port_reinit(ha);
8997
8998         /* destroy iface from sysfs */
8999         qla4xxx_destroy_ifaces(ha);
9000
9001         if ((!ql4xdisablesysfsboot) && ha->boot_kset)
9002                 iscsi_boot_destroy_kset(ha->boot_kset);
9003
9004         qla4xxx_destroy_fw_ddb_session(ha);
9005         qla4_8xxx_free_sysfs_attr(ha);
9006
9007         qla4xxx_sysfs_ddb_remove(ha);
9008         scsi_remove_host(ha->host);
9009
9010         qla4xxx_free_adapter(ha);
9011
9012         scsi_host_put(ha->host);
9013
9014         pci_disable_pcie_error_reporting(pdev);
9015         pci_disable_device(pdev);
9016 }
9017
9018 /**
9019  * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
9020  * @ha: HA context
9021  */
9022 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
9023 {
9024         /* Update our PCI device dma_mask for full 64 bit mask */
9025         if (dma_set_mask_and_coherent(&ha->pdev->dev, DMA_BIT_MASK(64))) {
9026                 dev_dbg(&ha->pdev->dev,
9027                           "Failed to set 64 bit PCI consistent mask; "
9028                            "using 32 bit.\n");
9029                 dma_set_mask_and_coherent(&ha->pdev->dev, DMA_BIT_MASK(32));
9030         }
9031 }
9032
9033 static int qla4xxx_slave_alloc(struct scsi_device *sdev)
9034 {
9035         struct iscsi_cls_session *cls_sess;
9036         struct iscsi_session *sess;
9037         struct ddb_entry *ddb;
9038         int queue_depth = QL4_DEF_QDEPTH;
9039
9040         cls_sess = starget_to_session(sdev->sdev_target);
9041         sess = cls_sess->dd_data;
9042         ddb = sess->dd_data;
9043
9044         sdev->hostdata = ddb;
9045
9046         if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
9047                 queue_depth = ql4xmaxqdepth;
9048
9049         scsi_change_queue_depth(sdev, queue_depth);
9050         return 0;
9051 }
9052
9053 /**
9054  * qla4xxx_del_from_active_array - returns an active srb
9055  * @ha: Pointer to host adapter structure.
9056  * @index: index into the active_array
9057  *
9058  * This routine removes and returns the srb at the specified index
9059  **/
9060 struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
9061     uint32_t index)
9062 {
9063         struct srb *srb = NULL;
9064         struct scsi_cmnd *cmd = NULL;
9065
9066         cmd = scsi_host_find_tag(ha->host, index);
9067         if (!cmd)
9068                 return srb;
9069
9070         srb = (struct srb *)CMD_SP(cmd);
9071         if (!srb)
9072                 return srb;
9073
9074         /* update counters */
9075         if (srb->flags & SRB_DMA_VALID) {
9076                 ha->iocb_cnt -= srb->iocb_cnt;
9077                 if (srb->cmd)
9078                         srb->cmd->host_scribble =
9079                                 (unsigned char *)(unsigned long) MAX_SRBS;
9080         }
9081         return srb;
9082 }
9083
9084 /**
9085  * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
9086  * @ha: Pointer to host adapter structure.
9087  * @cmd: Scsi Command to wait on.
9088  *
9089  * This routine waits for the command to be returned by the Firmware
9090  * for some max time.
9091  **/
9092 static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
9093                                       struct scsi_cmnd *cmd)
9094 {
9095         int done = 0;
9096         struct srb *rp;
9097         uint32_t max_wait_time = EH_WAIT_CMD_TOV;
9098         int ret = SUCCESS;
9099
9100         /* Dont wait on command if PCI error is being handled
9101          * by PCI AER driver
9102          */
9103         if (unlikely(pci_channel_offline(ha->pdev)) ||
9104             (test_bit(AF_EEH_BUSY, &ha->flags))) {
9105                 ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
9106                     ha->host_no, __func__);
9107                 return ret;
9108         }
9109
9110         do {
9111                 /* Checking to see if its returned to OS */
9112                 rp = (struct srb *) CMD_SP(cmd);
9113                 if (rp == NULL) {
9114                         done++;
9115                         break;
9116                 }
9117
9118                 msleep(2000);
9119         } while (max_wait_time--);
9120
9121         return done;
9122 }
9123
9124 /**
9125  * qla4xxx_wait_for_hba_online - waits for HBA to come online
9126  * @ha: Pointer to host adapter structure
9127  **/
9128 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
9129 {
9130         unsigned long wait_online;
9131
9132         wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
9133         while (time_before(jiffies, wait_online)) {
9134
9135                 if (adapter_up(ha))
9136                         return QLA_SUCCESS;
9137
9138                 msleep(2000);
9139         }
9140
9141         return QLA_ERROR;
9142 }
9143
9144 /**
9145  * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
9146  * @ha: pointer to HBA
9147  * @t: target id
9148  * @l: lun id
9149  *
9150  * This function waits for all outstanding commands to a lun to complete. It
9151  * returns 0 if all pending commands are returned and 1 otherwise.
9152  **/
9153 static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
9154                                         struct scsi_target *stgt,
9155                                         struct scsi_device *sdev)
9156 {
9157         int cnt;
9158         int status = 0;
9159         struct scsi_cmnd *cmd;
9160
9161         /*
9162          * Waiting for all commands for the designated target or dev
9163          * in the active array
9164          */
9165         for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
9166                 cmd = scsi_host_find_tag(ha->host, cnt);
9167                 if (cmd && stgt == scsi_target(cmd->device) &&
9168                     (!sdev || sdev == cmd->device)) {
9169                         if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
9170                                 status++;
9171                                 break;
9172                         }
9173                 }
9174         }
9175         return status;
9176 }
9177
9178 /**
9179  * qla4xxx_eh_abort - callback for abort task.
9180  * @cmd: Pointer to Linux's SCSI command structure
9181  *
9182  * This routine is called by the Linux OS to abort the specified
9183  * command.
9184  **/
9185 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
9186 {
9187         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9188         unsigned int id = cmd->device->id;
9189         uint64_t lun = cmd->device->lun;
9190         unsigned long flags;
9191         struct srb *srb = NULL;
9192         int ret = SUCCESS;
9193         int wait = 0;
9194         int rval;
9195
9196         ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%llu: Abort command issued cmd=%p, cdb=0x%x\n",
9197                    ha->host_no, id, lun, cmd, cmd->cmnd[0]);
9198
9199         rval = qla4xxx_isp_check_reg(ha);
9200         if (rval != QLA_SUCCESS) {
9201                 ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9202                 return FAILED;
9203         }
9204
9205         spin_lock_irqsave(&ha->hardware_lock, flags);
9206         srb = (struct srb *) CMD_SP(cmd);
9207         if (!srb) {
9208                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
9209                 ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%llu: Specified command has already completed.\n",
9210                            ha->host_no, id, lun);
9211                 return SUCCESS;
9212         }
9213         kref_get(&srb->srb_ref);
9214         spin_unlock_irqrestore(&ha->hardware_lock, flags);
9215
9216         if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
9217                 DEBUG3(printk("scsi%ld:%d:%llu: Abort_task mbx failed.\n",
9218                     ha->host_no, id, lun));
9219                 ret = FAILED;
9220         } else {
9221                 DEBUG3(printk("scsi%ld:%d:%llu: Abort_task mbx success.\n",
9222                     ha->host_no, id, lun));
9223                 wait = 1;
9224         }
9225
9226         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
9227
9228         /* Wait for command to complete */
9229         if (wait) {
9230                 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
9231                         DEBUG2(printk("scsi%ld:%d:%llu: Abort handler timed out\n",
9232                             ha->host_no, id, lun));
9233                         ret = FAILED;
9234                 }
9235         }
9236
9237         ql4_printk(KERN_INFO, ha,
9238             "scsi%ld:%d:%llu: Abort command - %s\n",
9239             ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
9240
9241         return ret;
9242 }
9243
9244 /**
9245  * qla4xxx_eh_device_reset - callback for target reset.
9246  * @cmd: Pointer to Linux's SCSI command structure
9247  *
9248  * This routine is called by the Linux OS to reset all luns on the
9249  * specified target.
9250  **/
9251 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
9252 {
9253         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9254         struct ddb_entry *ddb_entry = cmd->device->hostdata;
9255         int ret = FAILED, stat;
9256         int rval;
9257
9258         if (!ddb_entry)
9259                 return ret;
9260
9261         ret = iscsi_block_scsi_eh(cmd);
9262         if (ret)
9263                 return ret;
9264         ret = FAILED;
9265
9266         ql4_printk(KERN_INFO, ha,
9267                    "scsi%ld:%d:%d:%llu: DEVICE RESET ISSUED.\n", ha->host_no,
9268                    cmd->device->channel, cmd->device->id, cmd->device->lun);
9269
9270         DEBUG2(printk(KERN_INFO
9271                       "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
9272                       "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
9273                       cmd, jiffies, cmd->request->timeout / HZ,
9274                       ha->dpc_flags, cmd->result, cmd->allowed));
9275
9276         rval = qla4xxx_isp_check_reg(ha);
9277         if (rval != QLA_SUCCESS) {
9278                 ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9279                 return FAILED;
9280         }
9281
9282         /* FIXME: wait for hba to go online */
9283         stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
9284         if (stat != QLA_SUCCESS) {
9285                 ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
9286                 goto eh_dev_reset_done;
9287         }
9288
9289         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
9290                                          cmd->device)) {
9291                 ql4_printk(KERN_INFO, ha,
9292                            "DEVICE RESET FAILED - waiting for "
9293                            "commands.\n");
9294                 goto eh_dev_reset_done;
9295         }
9296
9297         /* Send marker. */
9298         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
9299                 MM_LUN_RESET) != QLA_SUCCESS)
9300                 goto eh_dev_reset_done;
9301
9302         ql4_printk(KERN_INFO, ha,
9303                    "scsi(%ld:%d:%d:%llu): DEVICE RESET SUCCEEDED.\n",
9304                    ha->host_no, cmd->device->channel, cmd->device->id,
9305                    cmd->device->lun);
9306
9307         ret = SUCCESS;
9308
9309 eh_dev_reset_done:
9310
9311         return ret;
9312 }
9313
9314 /**
9315  * qla4xxx_eh_target_reset - callback for target reset.
9316  * @cmd: Pointer to Linux's SCSI command structure
9317  *
9318  * This routine is called by the Linux OS to reset the target.
9319  **/
9320 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
9321 {
9322         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9323         struct ddb_entry *ddb_entry = cmd->device->hostdata;
9324         int stat, ret;
9325         int rval;
9326
9327         if (!ddb_entry)
9328                 return FAILED;
9329
9330         ret = iscsi_block_scsi_eh(cmd);
9331         if (ret)
9332                 return ret;
9333
9334         starget_printk(KERN_INFO, scsi_target(cmd->device),
9335                        "WARM TARGET RESET ISSUED.\n");
9336
9337         DEBUG2(printk(KERN_INFO
9338                       "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
9339                       "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
9340                       ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
9341                       ha->dpc_flags, cmd->result, cmd->allowed));
9342
9343         rval = qla4xxx_isp_check_reg(ha);
9344         if (rval != QLA_SUCCESS) {
9345                 ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9346                 return FAILED;
9347         }
9348
9349         stat = qla4xxx_reset_target(ha, ddb_entry);
9350         if (stat != QLA_SUCCESS) {
9351                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9352                                "WARM TARGET RESET FAILED.\n");
9353                 return FAILED;
9354         }
9355
9356         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
9357                                          NULL)) {
9358                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9359                                "WARM TARGET DEVICE RESET FAILED - "
9360                                "waiting for commands.\n");
9361                 return FAILED;
9362         }
9363
9364         /* Send marker. */
9365         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
9366                 MM_TGT_WARM_RESET) != QLA_SUCCESS) {
9367                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9368                                "WARM TARGET DEVICE RESET FAILED - "
9369                                "marker iocb failed.\n");
9370                 return FAILED;
9371         }
9372
9373         starget_printk(KERN_INFO, scsi_target(cmd->device),
9374                        "WARM TARGET RESET SUCCEEDED.\n");
9375         return SUCCESS;
9376 }
9377
9378 /**
9379  * qla4xxx_is_eh_active - check if error handler is running
9380  * @shost: Pointer to SCSI Host struct
9381  *
9382  * This routine finds that if reset host is called in EH
9383  * scenario or from some application like sg_reset
9384  **/
9385 static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
9386 {
9387         if (shost->shost_state == SHOST_RECOVERY)
9388                 return 1;
9389         return 0;
9390 }
9391
9392 /**
9393  * qla4xxx_eh_host_reset - kernel callback
9394  * @cmd: Pointer to Linux's SCSI command structure
9395  *
9396  * This routine is invoked by the Linux kernel to perform fatal error
9397  * recovery on the specified adapter.
9398  **/
9399 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
9400 {
9401         int return_status = FAILED;
9402         struct scsi_qla_host *ha;
9403         int rval;
9404
9405         ha = to_qla_host(cmd->device->host);
9406
9407         rval = qla4xxx_isp_check_reg(ha);
9408         if (rval != QLA_SUCCESS) {
9409                 ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9410                 return FAILED;
9411         }
9412
9413         if ((is_qla8032(ha) || is_qla8042(ha)) && ql4xdontresethba)
9414                 qla4_83xx_set_idc_dontreset(ha);
9415
9416         /*
9417          * For ISP8324 and ISP8042, if IDC_CTRL DONTRESET_BIT0 is set by other
9418          * protocol drivers, we should not set device_state to NEED_RESET
9419          */
9420         if (ql4xdontresethba ||
9421             ((is_qla8032(ha) || is_qla8042(ha)) &&
9422              qla4_83xx_idc_dontreset(ha))) {
9423                 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
9424                      ha->host_no, __func__));
9425
9426                 /* Clear outstanding srb in queues */
9427                 if (qla4xxx_is_eh_active(cmd->device->host))
9428                         qla4xxx_abort_active_cmds(ha, DID_ABORT << 16);
9429
9430                 return FAILED;
9431         }
9432
9433         ql4_printk(KERN_INFO, ha,
9434                    "scsi(%ld:%d:%d:%llu): HOST RESET ISSUED.\n", ha->host_no,
9435                    cmd->device->channel, cmd->device->id, cmd->device->lun);
9436
9437         if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
9438                 DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host.  Adapter "
9439                               "DEAD.\n", ha->host_no, cmd->device->channel,
9440                               __func__));
9441
9442                 return FAILED;
9443         }
9444
9445         if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9446                 if (is_qla80XX(ha))
9447                         set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
9448                 else
9449                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
9450         }
9451
9452         if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
9453                 return_status = SUCCESS;
9454
9455         ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
9456                    return_status == FAILED ? "FAILED" : "SUCCEEDED");
9457
9458         return return_status;
9459 }
9460
9461 static int qla4xxx_context_reset(struct scsi_qla_host *ha)
9462 {
9463         uint32_t mbox_cmd[MBOX_REG_COUNT];
9464         uint32_t mbox_sts[MBOX_REG_COUNT];
9465         struct addr_ctrl_blk_def *acb = NULL;
9466         uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
9467         int rval = QLA_SUCCESS;
9468         dma_addr_t acb_dma;
9469
9470         acb = dma_alloc_coherent(&ha->pdev->dev,
9471                                  sizeof(struct addr_ctrl_blk_def),
9472                                  &acb_dma, GFP_KERNEL);
9473         if (!acb) {
9474                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
9475                            __func__);
9476                 rval = -ENOMEM;
9477                 goto exit_port_reset;
9478         }
9479
9480         memset(acb, 0, acb_len);
9481
9482         rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
9483         if (rval != QLA_SUCCESS) {
9484                 rval = -EIO;
9485                 goto exit_free_acb;
9486         }
9487
9488         rval = qla4xxx_disable_acb(ha);
9489         if (rval != QLA_SUCCESS) {
9490                 rval = -EIO;
9491                 goto exit_free_acb;
9492         }
9493
9494         wait_for_completion_timeout(&ha->disable_acb_comp,
9495                                     DISABLE_ACB_TOV * HZ);
9496
9497         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
9498         if (rval != QLA_SUCCESS) {
9499                 rval = -EIO;
9500                 goto exit_free_acb;
9501         }
9502
9503 exit_free_acb:
9504         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
9505                           acb, acb_dma);
9506 exit_port_reset:
9507         DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
9508                           rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
9509         return rval;
9510 }
9511
9512 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
9513 {
9514         struct scsi_qla_host *ha = to_qla_host(shost);
9515         int rval = QLA_SUCCESS;
9516         uint32_t idc_ctrl;
9517
9518         if (ql4xdontresethba) {
9519                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
9520                                   __func__));
9521                 rval = -EPERM;
9522                 goto exit_host_reset;
9523         }
9524
9525         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
9526                 goto recover_adapter;
9527
9528         switch (reset_type) {
9529         case SCSI_ADAPTER_RESET:
9530                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
9531                 break;
9532         case SCSI_FIRMWARE_RESET:
9533                 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9534                         if (is_qla80XX(ha))
9535                                 /* set firmware context reset */
9536                                 set_bit(DPC_RESET_HA_FW_CONTEXT,
9537                                         &ha->dpc_flags);
9538                         else {
9539                                 rval = qla4xxx_context_reset(ha);
9540                                 goto exit_host_reset;
9541                         }
9542                 }
9543                 break;
9544         }
9545
9546 recover_adapter:
9547         /* For ISP8324 and ISP8042 set graceful reset bit in IDC_DRV_CTRL if
9548          * reset is issued by application */
9549         if ((is_qla8032(ha) || is_qla8042(ha)) &&
9550             test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9551                 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
9552                 qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL,
9553                                  (idc_ctrl | GRACEFUL_RESET_BIT1));
9554         }
9555
9556         rval = qla4xxx_recover_adapter(ha);
9557         if (rval != QLA_SUCCESS) {
9558                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
9559                                   __func__));
9560                 rval = -EIO;
9561         }
9562
9563 exit_host_reset:
9564         return rval;
9565 }
9566
9567 /* PCI AER driver recovers from all correctable errors w/o
9568  * driver intervention. For uncorrectable errors PCI AER
9569  * driver calls the following device driver's callbacks
9570  *
9571  * - Fatal Errors - link_reset
9572  * - Non-Fatal Errors - driver's error_detected() which
9573  * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
9574  *
9575  * PCI AER driver calls
9576  * CAN_RECOVER - driver's mmio_enabled(), mmio_enabled()
9577  *               returns RECOVERED or NEED_RESET if fw_hung
9578  * NEED_RESET - driver's slot_reset()
9579  * DISCONNECT - device is dead & cannot recover
9580  * RECOVERED - driver's resume()
9581  */
9582 static pci_ers_result_t
9583 qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
9584 {
9585         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9586
9587         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
9588             ha->host_no, __func__, state);
9589
9590         if (!is_aer_supported(ha))
9591                 return PCI_ERS_RESULT_NONE;
9592
9593         switch (state) {
9594         case pci_channel_io_normal:
9595                 clear_bit(AF_EEH_BUSY, &ha->flags);
9596                 return PCI_ERS_RESULT_CAN_RECOVER;
9597         case pci_channel_io_frozen:
9598                 set_bit(AF_EEH_BUSY, &ha->flags);
9599                 qla4xxx_mailbox_premature_completion(ha);
9600                 qla4xxx_free_irqs(ha);
9601                 pci_disable_device(pdev);
9602                 /* Return back all IOs */
9603                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
9604                 return PCI_ERS_RESULT_NEED_RESET;
9605         case pci_channel_io_perm_failure:
9606                 set_bit(AF_EEH_BUSY, &ha->flags);
9607                 set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
9608                 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
9609                 return PCI_ERS_RESULT_DISCONNECT;
9610         }
9611         return PCI_ERS_RESULT_NEED_RESET;
9612 }
9613
9614 /**
9615  * qla4xxx_pci_mmio_enabled() gets called if
9616  * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
9617  * and read/write to the device still works.
9618  **/
9619 static pci_ers_result_t
9620 qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
9621 {
9622         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9623
9624         if (!is_aer_supported(ha))
9625                 return PCI_ERS_RESULT_NONE;
9626
9627         return PCI_ERS_RESULT_RECOVERED;
9628 }
9629
9630 static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
9631 {
9632         uint32_t rval = QLA_ERROR;
9633         int fn;
9634         struct pci_dev *other_pdev = NULL;
9635
9636         ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
9637
9638         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
9639
9640         if (test_bit(AF_ONLINE, &ha->flags)) {
9641                 clear_bit(AF_ONLINE, &ha->flags);
9642                 clear_bit(AF_LINK_UP, &ha->flags);
9643                 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
9644                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
9645         }
9646
9647         fn = PCI_FUNC(ha->pdev->devfn);
9648         if (is_qla8022(ha)) {
9649                 while (fn > 0) {
9650                         fn--;
9651                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at func %x\n",
9652                                    ha->host_no, __func__, fn);
9653                         /* Get the pci device given the domain, bus,
9654                          * slot/function number */
9655                         other_pdev = pci_get_domain_bus_and_slot(
9656                                            pci_domain_nr(ha->pdev->bus),
9657                                            ha->pdev->bus->number,
9658                                            PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
9659                                            fn));
9660
9661                         if (!other_pdev)
9662                                 continue;
9663
9664                         if (atomic_read(&other_pdev->enable_cnt)) {
9665                                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI func in enabled state%x\n",
9666                                            ha->host_no, __func__, fn);
9667                                 pci_dev_put(other_pdev);
9668                                 break;
9669                         }
9670                         pci_dev_put(other_pdev);
9671                 }
9672         } else {
9673                 /* this case is meant for ISP83xx/ISP84xx only */
9674                 if (qla4_83xx_can_perform_reset(ha)) {
9675                         /* reset fn as iSCSI is going to perform the reset */
9676                         fn = 0;
9677                 }
9678         }
9679
9680         /* The first function on the card, the reset owner will
9681          * start & initialize the firmware. The other functions
9682          * on the card will reset the firmware context
9683          */
9684         if (!fn) {
9685                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
9686                     "0x%x is the owner\n", ha->host_no, __func__,
9687                     ha->pdev->devfn);
9688
9689                 ha->isp_ops->idc_lock(ha);
9690                 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9691                                     QLA8XXX_DEV_COLD);
9692                 ha->isp_ops->idc_unlock(ha);
9693
9694                 rval = qla4_8xxx_update_idc_reg(ha);
9695                 if (rval == QLA_ERROR) {
9696                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: FAILED\n",
9697                                    ha->host_no, __func__);
9698                         ha->isp_ops->idc_lock(ha);
9699                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9700                                             QLA8XXX_DEV_FAILED);
9701                         ha->isp_ops->idc_unlock(ha);
9702                         goto exit_error_recovery;
9703                 }
9704
9705                 clear_bit(AF_FW_RECOVERY, &ha->flags);
9706                 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
9707
9708                 if (rval != QLA_SUCCESS) {
9709                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
9710                             "FAILED\n", ha->host_no, __func__);
9711                         qla4xxx_free_irqs(ha);
9712                         ha->isp_ops->idc_lock(ha);
9713                         qla4_8xxx_clear_drv_active(ha);
9714                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9715                                             QLA8XXX_DEV_FAILED);
9716                         ha->isp_ops->idc_unlock(ha);
9717                 } else {
9718                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
9719                             "READY\n", ha->host_no, __func__);
9720                         ha->isp_ops->idc_lock(ha);
9721                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9722                                             QLA8XXX_DEV_READY);
9723                         /* Clear driver state register */
9724                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_STATE, 0);
9725                         qla4_8xxx_set_drv_active(ha);
9726                         ha->isp_ops->idc_unlock(ha);
9727                         ha->isp_ops->enable_intrs(ha);
9728                 }
9729         } else {
9730                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
9731                     "the reset owner\n", ha->host_no, __func__,
9732                     ha->pdev->devfn);
9733                 if ((qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE) ==
9734                      QLA8XXX_DEV_READY)) {
9735                         clear_bit(AF_FW_RECOVERY, &ha->flags);
9736                         rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
9737                         if (rval == QLA_SUCCESS)
9738                                 ha->isp_ops->enable_intrs(ha);
9739                         else
9740                                 qla4xxx_free_irqs(ha);
9741
9742                         ha->isp_ops->idc_lock(ha);
9743                         qla4_8xxx_set_drv_active(ha);
9744                         ha->isp_ops->idc_unlock(ha);
9745                 }
9746         }
9747 exit_error_recovery:
9748         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
9749         return rval;
9750 }
9751
9752 static pci_ers_result_t
9753 qla4xxx_pci_slot_reset(struct pci_dev *pdev)
9754 {
9755         pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
9756         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9757         int rc;
9758
9759         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
9760             ha->host_no, __func__);
9761
9762         if (!is_aer_supported(ha))
9763                 return PCI_ERS_RESULT_NONE;
9764
9765         /* Restore the saved state of PCIe device -
9766          * BAR registers, PCI Config space, PCIX, MSI,
9767          * IOV states
9768          */
9769         pci_restore_state(pdev);
9770
9771         /* pci_restore_state() clears the saved_state flag of the device
9772          * save restored state which resets saved_state flag
9773          */
9774         pci_save_state(pdev);
9775
9776         /* Initialize device or resume if in suspended state */
9777         rc = pci_enable_device(pdev);
9778         if (rc) {
9779                 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
9780                     "device after reset\n", ha->host_no, __func__);
9781                 goto exit_slot_reset;
9782         }
9783
9784         ha->isp_ops->disable_intrs(ha);
9785
9786         if (is_qla80XX(ha)) {
9787                 if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
9788                         ret = PCI_ERS_RESULT_RECOVERED;
9789                         goto exit_slot_reset;
9790                 } else
9791                         goto exit_slot_reset;
9792         }
9793
9794 exit_slot_reset:
9795         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
9796             "device after reset\n", ha->host_no, __func__, ret);
9797         return ret;
9798 }
9799
9800 static void
9801 qla4xxx_pci_resume(struct pci_dev *pdev)
9802 {
9803         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9804         int ret;
9805
9806         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
9807             ha->host_no, __func__);
9808
9809         ret = qla4xxx_wait_for_hba_online(ha);
9810         if (ret != QLA_SUCCESS) {
9811                 ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
9812                     "resume I/O from slot/link_reset\n", ha->host_no,
9813                      __func__);
9814         }
9815
9816         clear_bit(AF_EEH_BUSY, &ha->flags);
9817 }
9818
9819 static const struct pci_error_handlers qla4xxx_err_handler = {
9820         .error_detected = qla4xxx_pci_error_detected,
9821         .mmio_enabled = qla4xxx_pci_mmio_enabled,
9822         .slot_reset = qla4xxx_pci_slot_reset,
9823         .resume = qla4xxx_pci_resume,
9824 };
9825
9826 static struct pci_device_id qla4xxx_pci_tbl[] = {
9827         {
9828                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9829                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4010,
9830                 .subvendor      = PCI_ANY_ID,
9831                 .subdevice      = PCI_ANY_ID,
9832         },
9833         {
9834                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9835                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4022,
9836                 .subvendor      = PCI_ANY_ID,
9837                 .subdevice      = PCI_ANY_ID,
9838         },
9839         {
9840                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9841                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4032,
9842                 .subvendor      = PCI_ANY_ID,
9843                 .subdevice      = PCI_ANY_ID,
9844         },
9845         {
9846                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9847                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8022,
9848                 .subvendor      = PCI_ANY_ID,
9849                 .subdevice      = PCI_ANY_ID,
9850         },
9851         {
9852                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9853                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8324,
9854                 .subvendor      = PCI_ANY_ID,
9855                 .subdevice      = PCI_ANY_ID,
9856         },
9857         {
9858                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9859                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8042,
9860                 .subvendor      = PCI_ANY_ID,
9861                 .subdevice      = PCI_ANY_ID,
9862         },
9863         {0, 0},
9864 };
9865 MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
9866
9867 static struct pci_driver qla4xxx_pci_driver = {
9868         .name           = DRIVER_NAME,
9869         .id_table       = qla4xxx_pci_tbl,
9870         .probe          = qla4xxx_probe_adapter,
9871         .remove         = qla4xxx_remove_adapter,
9872         .err_handler = &qla4xxx_err_handler,
9873 };
9874
9875 static int __init qla4xxx_module_init(void)
9876 {
9877         int ret;
9878
9879         if (ql4xqfulltracking)
9880                 qla4xxx_driver_template.track_queue_depth = 1;
9881
9882         /* Allocate cache for SRBs. */
9883         srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
9884                                        SLAB_HWCACHE_ALIGN, NULL);
9885         if (srb_cachep == NULL) {
9886                 printk(KERN_ERR
9887                        "%s: Unable to allocate SRB cache..."
9888                        "Failing load!\n", DRIVER_NAME);
9889                 ret = -ENOMEM;
9890                 goto no_srp_cache;
9891         }
9892
9893         /* Derive version string. */
9894         strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
9895         if (ql4xextended_error_logging)
9896                 strcat(qla4xxx_version_str, "-debug");
9897
9898         qla4xxx_scsi_transport =
9899                 iscsi_register_transport(&qla4xxx_iscsi_transport);
9900         if (!qla4xxx_scsi_transport){
9901                 ret = -ENODEV;
9902                 goto release_srb_cache;
9903         }
9904
9905         ret = pci_register_driver(&qla4xxx_pci_driver);
9906         if (ret)
9907                 goto unregister_transport;
9908
9909         printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
9910         return 0;
9911
9912 unregister_transport:
9913         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
9914 release_srb_cache:
9915         kmem_cache_destroy(srb_cachep);
9916 no_srp_cache:
9917         return ret;
9918 }
9919
9920 static void __exit qla4xxx_module_exit(void)
9921 {
9922         pci_unregister_driver(&qla4xxx_pci_driver);
9923         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
9924         kmem_cache_destroy(srb_cachep);
9925 }
9926
9927 module_init(qla4xxx_module_init);
9928 module_exit(qla4xxx_module_exit);
9929
9930 MODULE_AUTHOR("QLogic Corporation");
9931 MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
9932 MODULE_LICENSE("GPL");
9933 MODULE_VERSION(QLA4XXX_DRIVER_VERSION);