drivers/s390/net/qeth_core_main.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  *    Copyright IBM Corp. 2007, 2009
   4  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   5  *               Frank Pavlic <fpavlic@de.ibm.com>,
   6  *               Thomas Spatzier <tspat@de.ibm.com>,
   7  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   8  */
   9
  10 #define KMSG_COMPONENT "qeth"
  11 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
  12
  13 #include <linux/module.h>
  14 #include <linux/moduleparam.h>
  15 #include <linux/string.h>
  16 #include <linux/errno.h>
  17 #include <linux/kernel.h>
  18 #include <linux/ip.h>
  19 #include <linux/tcp.h>
  20 #include <linux/mii.h>
  21 #include <linux/kthread.h>
  22 #include <linux/slab.h>
  23 #include <linux/if_vlan.h>
  24 #include <linux/netdevice.h>
  25 #include <linux/netdev_features.h>
  26 #include <linux/skbuff.h>
  27
  28 #include <net/iucv/af_iucv.h>
  29 #include <net/dsfield.h>
  30
  31 #include <asm/ebcdic.h>
  32 #include <asm/chpid.h>
  33 #include <asm/io.h>
  34 #include <asm/sysinfo.h>
  35 #include <asm/compat.h>
  36 #include <asm/diag.h>
  37 #include <asm/cio.h>
  38 #include <asm/ccwdev.h>
  39 #include <asm/cpcmd.h>
  40
  41 #include "qeth_core.h"
  42
  43 struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = {
  44         /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */
  45         /*                   N  P  A    M  L  V                      H  */
  46         [QETH_DBF_SETUP] = {"qeth_setup",
  47                                 8, 1,   8, 5, &debug_hex_ascii_view, NULL},
  48         [QETH_DBF_MSG]   = {"qeth_msg", 8, 1, 11 * sizeof(long), 3,
  49                             &debug_sprintf_view, NULL},
  50         [QETH_DBF_CTRL]  = {"qeth_control",
  51                 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL},
  52 };
  53 EXPORT_SYMBOL_GPL(qeth_dbf);
  54
  55 struct qeth_card_list_struct qeth_core_card_list;
  56 EXPORT_SYMBOL_GPL(qeth_core_card_list);
  57 struct kmem_cache *qeth_core_header_cache;
  58 EXPORT_SYMBOL_GPL(qeth_core_header_cache);
  59 static struct kmem_cache *qeth_qdio_outbuf_cache;
  60
  61 static struct device *qeth_core_root_dev;
  62 static struct lock_class_key qdio_out_skb_queue_key;
  63 static struct mutex qeth_mod_mutex;
  64
  65 static void qeth_send_control_data_cb(struct qeth_channel *,
  66                         struct qeth_cmd_buffer *);
  67 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *);
  68 static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32);
  69 static void qeth_free_buffer_pool(struct qeth_card *);
  70 static int qeth_qdio_establish(struct qeth_card *);
  71 static void qeth_free_qdio_buffers(struct qeth_card *);
  72 static void qeth_notify_skbs(struct qeth_qdio_out_q *queue,
  73                 struct qeth_qdio_out_buffer *buf,
  74                 enum iucv_tx_notify notification);
  75 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf);
  76 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
  77                 struct qeth_qdio_out_buffer *buf,
  78                 enum qeth_qdio_buffer_states newbufstate);
  79 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *, int);
  80
  81 struct workqueue_struct *qeth_wq;
  82 EXPORT_SYMBOL_GPL(qeth_wq);
  83
  84 int qeth_card_hw_is_reachable(struct qeth_card *card)
  85 {
  86         return (card->state == CARD_STATE_SOFTSETUP) ||
  87                 (card->state == CARD_STATE_UP);
  88 }
  89 EXPORT_SYMBOL_GPL(qeth_card_hw_is_reachable);
  90
  91 static void qeth_close_dev_handler(struct work_struct *work)
  92 {
  93         struct qeth_card *card;
  94
  95         card = container_of(work, struct qeth_card, close_dev_work);
  96         QETH_CARD_TEXT(card, 2, "cldevhdl");
  97         rtnl_lock();
  98         dev_close(card->dev);
  99         rtnl_unlock();
 100         ccwgroup_set_offline(card->gdev);
 101 }
 102
 103 void qeth_close_dev(struct qeth_card *card)
 104 {
 105         QETH_CARD_TEXT(card, 2, "cldevsubm");
 106         queue_work(qeth_wq, &card->close_dev_work);
 107 }
 108 EXPORT_SYMBOL_GPL(qeth_close_dev);
 109
 110 static const char *qeth_get_cardname(struct qeth_card *card)
 111 {
 112         if (card->info.guestlan) {
 113                 switch (card->info.type) {
 114                 case QETH_CARD_TYPE_OSD:
 115                         return " Virtual NIC QDIO";
 116                 case QETH_CARD_TYPE_IQD:
 117                         return " Virtual NIC Hiper";
 118                 case QETH_CARD_TYPE_OSM:
 119                         return " Virtual NIC QDIO - OSM";
 120                 case QETH_CARD_TYPE_OSX:
 121                         return " Virtual NIC QDIO - OSX";
 122                 default:
 123                         return " unknown";
 124                 }
 125         } else {
 126                 switch (card->info.type) {
 127                 case QETH_CARD_TYPE_OSD:
 128                         return " OSD Express";
 129                 case QETH_CARD_TYPE_IQD:
 130                         return " HiperSockets";
 131                 case QETH_CARD_TYPE_OSN:
 132                         return " OSN QDIO";
 133                 case QETH_CARD_TYPE_OSM:
 134                         return " OSM QDIO";
 135                 case QETH_CARD_TYPE_OSX:
 136                         return " OSX QDIO";
 137                 default:
 138                         return " unknown";
 139                 }
 140         }
 141         return " n/a";
 142 }
 143
 144 /* max length to be returned: 14 */
 145 const char *qeth_get_cardname_short(struct qeth_card *card)
 146 {
 147         if (card->info.guestlan) {
 148                 switch (card->info.type) {
 149                 case QETH_CARD_TYPE_OSD:
 150                         return "Virt.NIC QDIO";
 151                 case QETH_CARD_TYPE_IQD:
 152                         return "Virt.NIC Hiper";
 153                 case QETH_CARD_TYPE_OSM:
 154                         return "Virt.NIC OSM";
 155                 case QETH_CARD_TYPE_OSX:
 156                         return "Virt.NIC OSX";
 157                 default:
 158                         return "unknown";
 159                 }
 160         } else {
 161                 switch (card->info.type) {
 162                 case QETH_CARD_TYPE_OSD:
 163                         switch (card->info.link_type) {
 164                         case QETH_LINK_TYPE_FAST_ETH:
 165                                 return "OSD_100";
 166                         case QETH_LINK_TYPE_HSTR:
 167                                 return "HSTR";
 168                         case QETH_LINK_TYPE_GBIT_ETH:
 169                                 return "OSD_1000";
 170                         case QETH_LINK_TYPE_10GBIT_ETH:
 171                                 return "OSD_10GIG";
 172                         case QETH_LINK_TYPE_LANE_ETH100:
 173                                 return "OSD_FE_LANE";
 174                         case QETH_LINK_TYPE_LANE_TR:
 175                                 return "OSD_TR_LANE";
 176                         case QETH_LINK_TYPE_LANE_ETH1000:
 177                                 return "OSD_GbE_LANE";
 178                         case QETH_LINK_TYPE_LANE:
 179                                 return "OSD_ATM_LANE";
 180                         default:
 181                                 return "OSD_Express";
 182                         }
 183                 case QETH_CARD_TYPE_IQD:
 184                         return "HiperSockets";
 185                 case QETH_CARD_TYPE_OSN:
 186                         return "OSN";
 187                 case QETH_CARD_TYPE_OSM:
 188                         return "OSM_1000";
 189                 case QETH_CARD_TYPE_OSX:
 190                         return "OSX_10GIG";
 191                 default:
 192                         return "unknown";
 193                 }
 194         }
 195         return "n/a";
 196 }
 197
 198 void qeth_set_recovery_task(struct qeth_card *card)
 199 {
 200         card->recovery_task = current;
 201 }
 202 EXPORT_SYMBOL_GPL(qeth_set_recovery_task);
 203
 204 void qeth_clear_recovery_task(struct qeth_card *card)
 205 {
 206         card->recovery_task = NULL;
 207 }
 208 EXPORT_SYMBOL_GPL(qeth_clear_recovery_task);
 209
 210 static bool qeth_is_recovery_task(const struct qeth_card *card)
 211 {
 212         return card->recovery_task == current;
 213 }
 214
 215 void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads,
 216                          int clear_start_mask)
 217 {
 218         unsigned long flags;
 219
 220         spin_lock_irqsave(&card->thread_mask_lock, flags);
 221         card->thread_allowed_mask = threads;
 222         if (clear_start_mask)
 223                 card->thread_start_mask &= threads;
 224         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 225         wake_up(&card->wait_q);
 226 }
 227 EXPORT_SYMBOL_GPL(qeth_set_allowed_threads);
 228
 229 int qeth_threads_running(struct qeth_card *card, unsigned long threads)
 230 {
 231         unsigned long flags;
 232         int rc = 0;
 233
 234         spin_lock_irqsave(&card->thread_mask_lock, flags);
 235         rc = (card->thread_running_mask & threads);
 236         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 237         return rc;
 238 }
 239 EXPORT_SYMBOL_GPL(qeth_threads_running);
 240
 241 int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads)
 242 {
 243         if (qeth_is_recovery_task(card))
 244                 return 0;
 245         return wait_event_interruptible(card->wait_q,
 246                         qeth_threads_running(card, threads) == 0);
 247 }
 248 EXPORT_SYMBOL_GPL(qeth_wait_for_threads);
 249
 250 void qeth_clear_working_pool_list(struct qeth_card *card)
 251 {
 252         struct qeth_buffer_pool_entry *pool_entry, *tmp;
 253
 254         QETH_CARD_TEXT(card, 5, "clwrklst");
 255         list_for_each_entry_safe(pool_entry, tmp,
 256                             &card->qdio.in_buf_pool.entry_list, list){
 257                         list_del(&pool_entry->list);
 258         }
 259 }
 260 EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list);
 261
 262 static int qeth_alloc_buffer_pool(struct qeth_card *card)
 263 {
 264         struct qeth_buffer_pool_entry *pool_entry;
 265         void *ptr;
 266         int i, j;
 267
 268         QETH_CARD_TEXT(card, 5, "alocpool");
 269         for (i = 0; i < card->qdio.init_pool.buf_count; ++i) {
 270                 pool_entry = kzalloc(sizeof(*pool_entry), GFP_KERNEL);
 271                 if (!pool_entry) {
 272                         qeth_free_buffer_pool(card);
 273                         return -ENOMEM;
 274                 }
 275                 for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) {
 276                         ptr = (void *) __get_free_page(GFP_KERNEL);
 277                         if (!ptr) {
 278                                 while (j > 0)
 279                                         free_page((unsigned long)
 280                                                   pool_entry->elements[--j]);
 281                                 kfree(pool_entry);
 282                                 qeth_free_buffer_pool(card);
 283                                 return -ENOMEM;
 284                         }
 285                         pool_entry->elements[j] = ptr;
 286                 }
 287                 list_add(&pool_entry->init_list,
 288                          &card->qdio.init_pool.entry_list);
 289         }
 290         return 0;
 291 }
 292
 293 int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt)
 294 {
 295         QETH_CARD_TEXT(card, 2, "realcbp");
 296
 297         if ((card->state != CARD_STATE_DOWN) &&
 298             (card->state != CARD_STATE_RECOVER))
 299                 return -EPERM;
 300
 301         /* TODO: steel/add buffers from/to a running card's buffer pool (?) */
 302         qeth_clear_working_pool_list(card);
 303         qeth_free_buffer_pool(card);
 304         card->qdio.in_buf_pool.buf_count = bufcnt;
 305         card->qdio.init_pool.buf_count = bufcnt;
 306         return qeth_alloc_buffer_pool(card);
 307 }
 308 EXPORT_SYMBOL_GPL(qeth_realloc_buffer_pool);
 309
 310 static void qeth_free_qdio_queue(struct qeth_qdio_q *q)
 311 {
 312         if (!q)
 313                 return;
 314
 315         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
 316         kfree(q);
 317 }
 318
 319 static struct qeth_qdio_q *qeth_alloc_qdio_queue(void)
 320 {
 321         struct qeth_qdio_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
 322         int i;
 323
 324         if (!q)
 325                 return NULL;
 326
 327         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
 328                 kfree(q);
 329                 return NULL;
 330         }
 331
 332         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i)
 333                 q->bufs[i].buffer = q->qdio_bufs[i];
 334
 335         QETH_DBF_HEX(SETUP, 2, &q, sizeof(void *));
 336         return q;
 337 }
 338
 339 static int qeth_cq_init(struct qeth_card *card)
 340 {
 341         int rc;
 342
 343         if (card->options.cq == QETH_CQ_ENABLED) {
 344                 QETH_DBF_TEXT(SETUP, 2, "cqinit");
 345                 qdio_reset_buffers(card->qdio.c_q->qdio_bufs,
 346                                    QDIO_MAX_BUFFERS_PER_Q);
 347                 card->qdio.c_q->next_buf_to_init = 127;
 348                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT,
 349                              card->qdio.no_in_queues - 1, 0,
 350                              127);
 351                 if (rc) {
 352                         QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
 353                         goto out;
 354                 }
 355         }
 356         rc = 0;
 357 out:
 358         return rc;
 359 }
 360
 361 static int qeth_alloc_cq(struct qeth_card *card)
 362 {
 363         int rc;
 364
 365         if (card->options.cq == QETH_CQ_ENABLED) {
 366                 int i;
 367                 struct qdio_outbuf_state *outbuf_states;
 368
 369                 QETH_DBF_TEXT(SETUP, 2, "cqon");
 370                 card->qdio.c_q = qeth_alloc_qdio_queue();
 371                 if (!card->qdio.c_q) {
 372                         rc = -1;
 373                         goto kmsg_out;
 374                 }
 375                 card->qdio.no_in_queues = 2;
 376                 card->qdio.out_bufstates =
 377                         kzalloc(card->qdio.no_out_queues *
 378                                 QDIO_MAX_BUFFERS_PER_Q *
 379                                 sizeof(struct qdio_outbuf_state), GFP_KERNEL);
 380                 outbuf_states = card->qdio.out_bufstates;
 381                 if (outbuf_states == NULL) {
 382                         rc = -1;
 383                         goto free_cq_out;
 384                 }
 385                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
 386                         card->qdio.out_qs[i]->bufstates = outbuf_states;
 387                         outbuf_states += QDIO_MAX_BUFFERS_PER_Q;
 388                 }
 389         } else {
 390                 QETH_DBF_TEXT(SETUP, 2, "nocq");
 391                 card->qdio.c_q = NULL;
 392                 card->qdio.no_in_queues = 1;
 393         }
 394         QETH_DBF_TEXT_(SETUP, 2, "iqc%d", card->qdio.no_in_queues);
 395         rc = 0;
 396 out:
 397         return rc;
 398 free_cq_out:
 399         qeth_free_qdio_queue(card->qdio.c_q);
 400         card->qdio.c_q = NULL;
 401 kmsg_out:
 402         dev_err(&card->gdev->dev, "Failed to create completion queue\n");
 403         goto out;
 404 }
 405
 406 static void qeth_free_cq(struct qeth_card *card)
 407 {
 408         if (card->qdio.c_q) {
 409                 --card->qdio.no_in_queues;
 410                 qeth_free_qdio_queue(card->qdio.c_q);
 411                 card->qdio.c_q = NULL;
 412         }
 413         kfree(card->qdio.out_bufstates);
 414         card->qdio.out_bufstates = NULL;
 415 }
 416
 417 static enum iucv_tx_notify qeth_compute_cq_notification(int sbalf15,
 418                                                         int delayed)
 419 {
 420         enum iucv_tx_notify n;
 421
 422         switch (sbalf15) {
 423         case 0:
 424                 n = delayed ? TX_NOTIFY_DELAYED_OK : TX_NOTIFY_OK;
 425                 break;
 426         case 4:
 427         case 16:
 428         case 17:
 429         case 18:
 430                 n = delayed ? TX_NOTIFY_DELAYED_UNREACHABLE :
 431                         TX_NOTIFY_UNREACHABLE;
 432                 break;
 433         default:
 434                 n = delayed ? TX_NOTIFY_DELAYED_GENERALERROR :
 435                         TX_NOTIFY_GENERALERROR;
 436                 break;
 437         }
 438
 439         return n;
 440 }
 441
 442 static void qeth_cleanup_handled_pending(struct qeth_qdio_out_q *q, int bidx,
 443                                          int forced_cleanup)
 444 {
 445         if (q->card->options.cq != QETH_CQ_ENABLED)
 446                 return;
 447
 448         if (q->bufs[bidx]->next_pending != NULL) {
 449                 struct qeth_qdio_out_buffer *head = q->bufs[bidx];
 450                 struct qeth_qdio_out_buffer *c = q->bufs[bidx]->next_pending;
 451
 452                 while (c) {
 453                         if (forced_cleanup ||
 454                             atomic_read(&c->state) ==
 455                               QETH_QDIO_BUF_HANDLED_DELAYED) {
 456                                 struct qeth_qdio_out_buffer *f = c;
 457                                 QETH_CARD_TEXT(f->q->card, 5, "fp");
 458                                 QETH_CARD_TEXT_(f->q->card, 5, "%lx", (long) f);
 459                                 /* release here to avoid interleaving between
 460                                    outbound tasklet and inbound tasklet
 461                                    regarding notifications and lifecycle */
 462                                 qeth_release_skbs(c);
 463
 464                                 c = f->next_pending;
 465                                 WARN_ON_ONCE(head->next_pending != f);
 466                                 head->next_pending = c;
 467                                 kmem_cache_free(qeth_qdio_outbuf_cache, f);
 468                         } else {
 469                                 head = c;
 470                                 c = c->next_pending;
 471                         }
 472
 473                 }
 474         }
 475         if (forced_cleanup && (atomic_read(&(q->bufs[bidx]->state)) ==
 476                                         QETH_QDIO_BUF_HANDLED_DELAYED)) {
 477                 /* for recovery situations */
 478                 q->bufs[bidx]->aob = q->bufstates[bidx].aob;
 479                 qeth_init_qdio_out_buf(q, bidx);
 480                 QETH_CARD_TEXT(q->card, 2, "clprecov");
 481         }
 482 }
 483
 484
 485 static void qeth_qdio_handle_aob(struct qeth_card *card,
 486                                  unsigned long phys_aob_addr)
 487 {
 488         struct qaob *aob;
 489         struct qeth_qdio_out_buffer *buffer;
 490         enum iucv_tx_notify notification;
 491
 492         aob = (struct qaob *) phys_to_virt(phys_aob_addr);
 493         QETH_CARD_TEXT(card, 5, "haob");
 494         QETH_CARD_TEXT_(card, 5, "%lx", phys_aob_addr);
 495         buffer = (struct qeth_qdio_out_buffer *) aob->user1;
 496         QETH_CARD_TEXT_(card, 5, "%lx", aob->user1);
 497
 498         if (atomic_cmpxchg(&buffer->state, QETH_QDIO_BUF_PRIMED,
 499                            QETH_QDIO_BUF_IN_CQ) == QETH_QDIO_BUF_PRIMED) {
 500                 notification = TX_NOTIFY_OK;
 501         } else {
 502                 WARN_ON_ONCE(atomic_read(&buffer->state) !=
 503                                                         QETH_QDIO_BUF_PENDING);
 504                 atomic_set(&buffer->state, QETH_QDIO_BUF_IN_CQ);
 505                 notification = TX_NOTIFY_DELAYED_OK;
 506         }
 507
 508         if (aob->aorc != 0)  {
 509                 QETH_CARD_TEXT_(card, 2, "aorc%02X", aob->aorc);
 510                 notification = qeth_compute_cq_notification(aob->aorc, 1);
 511         }
 512         qeth_notify_skbs(buffer->q, buffer, notification);
 513
 514         buffer->aob = NULL;
 515         qeth_clear_output_buffer(buffer->q, buffer,
 516                                  QETH_QDIO_BUF_HANDLED_DELAYED);
 517
 518         /* from here on: do not touch buffer anymore */
 519         qdio_release_aob(aob);
 520 }
 521
 522 static inline int qeth_is_cq(struct qeth_card *card, unsigned int queue)
 523 {
 524         return card->options.cq == QETH_CQ_ENABLED &&
 525             card->qdio.c_q != NULL &&
 526             queue != 0 &&
 527             queue == card->qdio.no_in_queues - 1;
 528 }
 529
 530 static int __qeth_issue_next_read(struct qeth_card *card)
 531 {
 532         int rc;
 533         struct qeth_cmd_buffer *iob;
 534
 535         QETH_CARD_TEXT(card, 5, "issnxrd");
 536         if (card->read.state != CH_STATE_UP)
 537                 return -EIO;
 538         iob = qeth_get_buffer(&card->read);
 539         if (!iob) {
 540                 dev_warn(&card->gdev->dev, "The qeth device driver "
 541                         "failed to recover an error on the device\n");
 542                 QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob "
 543                         "available\n", dev_name(&card->gdev->dev));
 544                 return -ENOMEM;
 545         }
 546         qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE);
 547         QETH_CARD_TEXT(card, 6, "noirqpnd");
 548         rc = ccw_device_start(card->read.ccwdev, &card->read.ccw,
 549                               (addr_t) iob, 0, 0);
 550         if (rc) {
 551                 QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! "
 552                         "rc=%i\n", dev_name(&card->gdev->dev), rc);
 553                 atomic_set(&card->read.irq_pending, 0);
 554                 card->read_or_write_problem = 1;
 555                 qeth_schedule_recovery(card);
 556                 wake_up(&card->wait_q);
 557         }
 558         return rc;
 559 }
 560
 561 static int qeth_issue_next_read(struct qeth_card *card)
 562 {
 563         int ret;
 564
 565         spin_lock_irq(get_ccwdev_lock(CARD_RDEV(card)));
 566         ret = __qeth_issue_next_read(card);
 567         spin_unlock_irq(get_ccwdev_lock(CARD_RDEV(card)));
 568
 569         return ret;
 570 }
 571
 572 static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
 573 {
 574         struct qeth_reply *reply;
 575
 576         reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC);
 577         if (reply) {
 578                 refcount_set(&reply->refcnt, 1);
 579                 atomic_set(&reply->received, 0);
 580                 reply->card = card;
 581         }
 582         return reply;
 583 }
 584
 585 static void qeth_get_reply(struct qeth_reply *reply)
 586 {
 587         refcount_inc(&reply->refcnt);
 588 }
 589
 590 static void qeth_put_reply(struct qeth_reply *reply)
 591 {
 592         if (refcount_dec_and_test(&reply->refcnt))
 593                 kfree(reply);
 594 }
 595
 596 static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
 597                 struct qeth_card *card)
 598 {
 599         char *ipa_name;
 600         int com = cmd->hdr.command;
 601         ipa_name = qeth_get_ipa_cmd_name(com);
 602         if (rc)
 603                 QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s/%s returned "
 604                                 "x%X \"%s\"\n",
 605                                 ipa_name, com, dev_name(&card->gdev->dev),
 606                                 QETH_CARD_IFNAME(card), rc,
 607                                 qeth_get_ipa_msg(rc));
 608         else
 609                 QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s/%s succeeded\n",
 610                                 ipa_name, com, dev_name(&card->gdev->dev),
 611                                 QETH_CARD_IFNAME(card));
 612 }
 613
 614 static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
 615                 struct qeth_cmd_buffer *iob)
 616 {
 617         struct qeth_ipa_cmd *cmd = NULL;
 618
 619         QETH_CARD_TEXT(card, 5, "chkipad");
 620         if (IS_IPA(iob->data)) {
 621                 cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data);
 622                 if (IS_IPA_REPLY(cmd)) {
 623                         if (cmd->hdr.command != IPA_CMD_SETCCID &&
 624                             cmd->hdr.command != IPA_CMD_DELCCID &&
 625                             cmd->hdr.command != IPA_CMD_MODCCID &&
 626                             cmd->hdr.command != IPA_CMD_SET_DIAG_ASS)
 627                                 qeth_issue_ipa_msg(cmd,
 628                                                 cmd->hdr.return_code, card);
 629                         return cmd;
 630                 } else {
 631                         switch (cmd->hdr.command) {
 632                         case IPA_CMD_STOPLAN:
 633                                 if (cmd->hdr.return_code ==
 634                                                 IPA_RC_VEPA_TO_VEB_TRANSITION) {
 635                                         dev_err(&card->gdev->dev,
 636                                            "Interface %s is down because the "
 637                                            "adjacent port is no longer in "
 638                                            "reflective relay mode\n",
 639                                            QETH_CARD_IFNAME(card));
 640                                         qeth_close_dev(card);
 641                                 } else {
 642                                         dev_warn(&card->gdev->dev,
 643                                            "The link for interface %s on CHPID"
 644                                            " 0x%X failed\n",
 645                                            QETH_CARD_IFNAME(card),
 646                                            card->info.chpid);
 647                                         qeth_issue_ipa_msg(cmd,
 648                                                 cmd->hdr.return_code, card);
 649                                 }
 650                                 card->lan_online = 0;
 651                                 if (card->dev && netif_carrier_ok(card->dev))
 652                                         netif_carrier_off(card->dev);
 653                                 return NULL;
 654                         case IPA_CMD_STARTLAN:
 655                                 dev_info(&card->gdev->dev,
 656                                            "The link for %s on CHPID 0x%X has"
 657                                            " been restored\n",
 658                                            QETH_CARD_IFNAME(card),
 659                                            card->info.chpid);
 660                                 netif_carrier_on(card->dev);
 661                                 card->lan_online = 1;
 662                                 if (card->info.hwtrap)
 663                                         card->info.hwtrap = 2;
 664                                 qeth_schedule_recovery(card);
 665                                 return NULL;
 666                         case IPA_CMD_SETBRIDGEPORT_IQD:
 667                         case IPA_CMD_SETBRIDGEPORT_OSA:
 668                         case IPA_CMD_ADDRESS_CHANGE_NOTIF:
 669                                 if (card->discipline->control_event_handler
 670                                                                 (card, cmd))
 671                                         return cmd;
 672                                 else
 673                                         return NULL;
 674                         case IPA_CMD_MODCCID:
 675                                 return cmd;
 676                         case IPA_CMD_REGISTER_LOCAL_ADDR:
 677                                 QETH_CARD_TEXT(card, 3, "irla");
 678                                 break;
 679                         case IPA_CMD_UNREGISTER_LOCAL_ADDR:
 680                                 QETH_CARD_TEXT(card, 3, "urla");
 681                                 break;
 682                         default:
 683                                 QETH_DBF_MESSAGE(2, "Received data is IPA "
 684                                            "but not a reply!\n");
 685                                 break;
 686                         }
 687                 }
 688         }
 689         return cmd;
 690 }
 691
 692 void qeth_clear_ipacmd_list(struct qeth_card *card)
 693 {
 694         struct qeth_reply *reply, *r;
 695         unsigned long flags;
 696
 697         QETH_CARD_TEXT(card, 4, "clipalst");
 698
 699         spin_lock_irqsave(&card->lock, flags);
 700         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 701                 qeth_get_reply(reply);
 702                 reply->rc = -EIO;
 703                 atomic_inc(&reply->received);
 704                 list_del_init(&reply->list);
 705                 wake_up(&reply->wait_q);
 706                 qeth_put_reply(reply);
 707         }
 708         spin_unlock_irqrestore(&card->lock, flags);
 709         atomic_set(&card->write.irq_pending, 0);
 710 }
 711 EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
 712
 713 static int qeth_check_idx_response(struct qeth_card *card,
 714         unsigned char *buffer)
 715 {
 716         if (!buffer)
 717                 return 0;
 718
 719         QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN);
 720         if ((buffer[2] & 0xc0) == 0xc0) {
 721                 QETH_DBF_MESSAGE(2, "received an IDX TERMINATE with cause code %#02x\n",
 722                                  buffer[4]);
 723                 QETH_CARD_TEXT(card, 2, "ckidxres");
 724                 QETH_CARD_TEXT(card, 2, " idxterm");
 725                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
 726                 if (buffer[4] == 0xf6) {
 727                         dev_err(&card->gdev->dev,
 728                         "The qeth device is not configured "
 729                         "for the OSI layer required by z/VM\n");
 730                         return -EPERM;
 731                 }
 732                 return -EIO;
 733         }
 734         return 0;
 735 }
 736
 737 static struct qeth_card *CARD_FROM_CDEV(struct ccw_device *cdev)
 738 {
 739         struct qeth_card *card = dev_get_drvdata(&((struct ccwgroup_device *)
 740                 dev_get_drvdata(&cdev->dev))->dev);
 741         return card;
 742 }
 743
 744 static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob,
 745                 __u32 len)
 746 {
 747         struct qeth_card *card;
 748
 749         card = CARD_FROM_CDEV(channel->ccwdev);
 750         QETH_CARD_TEXT(card, 4, "setupccw");
 751         if (channel == &card->read)
 752                 memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
 753         else
 754                 memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
 755         channel->ccw.count = len;
 756         channel->ccw.cda = (__u32) __pa(iob);
 757 }
 758
 759 static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel)
 760 {
 761         __u8 index;
 762
 763         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "getbuff");
 764         index = channel->io_buf_no;
 765         do {
 766                 if (channel->iob[index].state == BUF_STATE_FREE) {
 767                         channel->iob[index].state = BUF_STATE_LOCKED;
 768                         channel->io_buf_no = (channel->io_buf_no + 1) %
 769                                 QETH_CMD_BUFFER_NO;
 770                         memset(channel->iob[index].data, 0, QETH_BUFSIZE);
 771                         return channel->iob + index;
 772                 }
 773                 index = (index + 1) % QETH_CMD_BUFFER_NO;
 774         } while (index != channel->io_buf_no);
 775
 776         return NULL;
 777 }
 778
 779 void qeth_release_buffer(struct qeth_channel *channel,
 780                 struct qeth_cmd_buffer *iob)
 781 {
 782         unsigned long flags;
 783
 784         QETH_CARD_TEXT(CARD_FROM_CDEV(channel->ccwdev), 6, "relbuff");
 785         spin_lock_irqsave(&channel->iob_lock, flags);
 786         memset(iob->data, 0, QETH_BUFSIZE);
 787         iob->state = BUF_STATE_FREE;
 788         iob->callback = qeth_send_control_data_cb;
 789         iob->rc = 0;
 790         spin_unlock_irqrestore(&channel->iob_lock, flags);
 791         wake_up(&channel->wait_q);
 792 }
 793 EXPORT_SYMBOL_GPL(qeth_release_buffer);
 794
 795 static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel)
 796 {
 797         struct qeth_cmd_buffer *buffer = NULL;
 798         unsigned long flags;
 799
 800         spin_lock_irqsave(&channel->iob_lock, flags);
 801         buffer = __qeth_get_buffer(channel);
 802         spin_unlock_irqrestore(&channel->iob_lock, flags);
 803         return buffer;
 804 }
 805
 806 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel)
 807 {
 808         struct qeth_cmd_buffer *buffer;
 809         wait_event(channel->wait_q,
 810                    ((buffer = qeth_get_buffer(channel)) != NULL));
 811         return buffer;
 812 }
 813 EXPORT_SYMBOL_GPL(qeth_wait_for_buffer);
 814
 815 void qeth_clear_cmd_buffers(struct qeth_channel *channel)
 816 {
 817         int cnt;
 818
 819         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
 820                 qeth_release_buffer(channel, &channel->iob[cnt]);
 821         channel->io_buf_no = 0;
 822 }
 823 EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers);
 824
 825 static void qeth_send_control_data_cb(struct qeth_channel *channel,
 826                   struct qeth_cmd_buffer *iob)
 827 {
 828         struct qeth_card *card;
 829         struct qeth_reply *reply, *r;
 830         struct qeth_ipa_cmd *cmd;
 831         unsigned long flags;
 832         int keep_reply;
 833         int rc = 0;
 834
 835         card = CARD_FROM_CDEV(channel->ccwdev);
 836         QETH_CARD_TEXT(card, 4, "sndctlcb");
 837         rc = qeth_check_idx_response(card, iob->data);
 838         switch (rc) {
 839         case 0:
 840                 break;
 841         case -EIO:
 842                 qeth_clear_ipacmd_list(card);
 843                 qeth_schedule_recovery(card);
 844                 /* fall through */
 845         default:
 846                 goto out;
 847         }
 848
 849         cmd = qeth_check_ipa_data(card, iob);
 850         if ((cmd == NULL) && (card->state != CARD_STATE_DOWN))
 851                 goto out;
 852         /*in case of OSN : check if cmd is set */
 853         if (card->info.type == QETH_CARD_TYPE_OSN &&
 854             cmd &&
 855             cmd->hdr.command != IPA_CMD_STARTLAN &&
 856             card->osn_info.assist_cb != NULL) {
 857                 card->osn_info.assist_cb(card->dev, cmd);
 858                 goto out;
 859         }
 860
 861         spin_lock_irqsave(&card->lock, flags);
 862         list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) {
 863                 if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) ||
 864                     ((cmd) && (reply->seqno == cmd->hdr.seqno))) {
 865                         qeth_get_reply(reply);
 866                         list_del_init(&reply->list);
 867                         spin_unlock_irqrestore(&card->lock, flags);
 868                         keep_reply = 0;
 869                         if (reply->callback != NULL) {
 870                                 if (cmd) {
 871                                         reply->offset = (__u16)((char *)cmd -
 872                                                         (char *)iob->data);
 873                                         keep_reply = reply->callback(card,
 874                                                         reply,
 875                                                         (unsigned long)cmd);
 876                                 } else
 877                                         keep_reply = reply->callback(card,
 878                                                         reply,
 879                                                         (unsigned long)iob);
 880                         }
 881                         if (cmd)
 882                                 reply->rc = (u16) cmd->hdr.return_code;
 883                         else if (iob->rc)
 884                                 reply->rc = iob->rc;
 885                         if (keep_reply) {
 886                                 spin_lock_irqsave(&card->lock, flags);
 887                                 list_add_tail(&reply->list,
 888                                               &card->cmd_waiter_list);
 889                                 spin_unlock_irqrestore(&card->lock, flags);
 890                         } else {
 891                                 atomic_inc(&reply->received);
 892                                 wake_up(&reply->wait_q);
 893                         }
 894                         qeth_put_reply(reply);
 895                         goto out;
 896                 }
 897         }
 898         spin_unlock_irqrestore(&card->lock, flags);
 899 out:
 900         memcpy(&card->seqno.pdu_hdr_ack,
 901                 QETH_PDU_HEADER_SEQ_NO(iob->data),
 902                 QETH_SEQ_NO_LENGTH);
 903         qeth_release_buffer(channel, iob);
 904 }
 905
 906 static int qeth_setup_channel(struct qeth_channel *channel)
 907 {
 908         int cnt;
 909
 910         QETH_DBF_TEXT(SETUP, 2, "setupch");
 911         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) {
 912                 channel->iob[cnt].data =
 913                         kzalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL);
 914                 if (channel->iob[cnt].data == NULL)
 915                         break;
 916                 channel->iob[cnt].state = BUF_STATE_FREE;
 917                 channel->iob[cnt].channel = channel;
 918                 channel->iob[cnt].callback = qeth_send_control_data_cb;
 919                 channel->iob[cnt].rc = 0;
 920         }
 921         if (cnt < QETH_CMD_BUFFER_NO) {
 922                 while (cnt-- > 0)
 923                         kfree(channel->iob[cnt].data);
 924                 return -ENOMEM;
 925         }
 926         channel->io_buf_no = 0;
 927         atomic_set(&channel->irq_pending, 0);
 928         spin_lock_init(&channel->iob_lock);
 929
 930         init_waitqueue_head(&channel->wait_q);
 931         return 0;
 932 }
 933
 934 static int qeth_set_thread_start_bit(struct qeth_card *card,
 935                 unsigned long thread)
 936 {
 937         unsigned long flags;
 938
 939         spin_lock_irqsave(&card->thread_mask_lock, flags);
 940         if (!(card->thread_allowed_mask & thread) ||
 941               (card->thread_start_mask & thread)) {
 942                 spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 943                 return -EPERM;
 944         }
 945         card->thread_start_mask |= thread;
 946         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 947         return 0;
 948 }
 949
 950 void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread)
 951 {
 952         unsigned long flags;
 953
 954         spin_lock_irqsave(&card->thread_mask_lock, flags);
 955         card->thread_start_mask &= ~thread;
 956         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 957         wake_up(&card->wait_q);
 958 }
 959 EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit);
 960
 961 void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread)
 962 {
 963         unsigned long flags;
 964
 965         spin_lock_irqsave(&card->thread_mask_lock, flags);
 966         card->thread_running_mask &= ~thread;
 967         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 968         wake_up_all(&card->wait_q);
 969 }
 970 EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit);
 971
 972 static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 973 {
 974         unsigned long flags;
 975         int rc = 0;
 976
 977         spin_lock_irqsave(&card->thread_mask_lock, flags);
 978         if (card->thread_start_mask & thread) {
 979                 if ((card->thread_allowed_mask & thread) &&
 980                     !(card->thread_running_mask & thread)) {
 981                         rc = 1;
 982                         card->thread_start_mask &= ~thread;
 983                         card->thread_running_mask |= thread;
 984                 } else
 985                         rc = -EPERM;
 986         }
 987         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
 988         return rc;
 989 }
 990
 991 int qeth_do_run_thread(struct qeth_card *card, unsigned long thread)
 992 {
 993         int rc = 0;
 994
 995         wait_event(card->wait_q,
 996                    (rc = __qeth_do_run_thread(card, thread)) >= 0);
 997         return rc;
 998 }
 999 EXPORT_SYMBOL_GPL(qeth_do_run_thread);
1000
1001 void qeth_schedule_recovery(struct qeth_card *card)
1002 {
1003         QETH_CARD_TEXT(card, 2, "startrec");
1004         if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0)
1005                 schedule_work(&card->kernel_thread_starter);
1006 }
1007 EXPORT_SYMBOL_GPL(qeth_schedule_recovery);
1008
1009 static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb)
1010 {
1011         int dstat, cstat;
1012         char *sense;
1013         struct qeth_card *card;
1014
1015         sense = (char *) irb->ecw;
1016         cstat = irb->scsw.cmd.cstat;
1017         dstat = irb->scsw.cmd.dstat;
1018         card = CARD_FROM_CDEV(cdev);
1019
1020         if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK |
1021                      SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK |
1022                      SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) {
1023                 QETH_CARD_TEXT(card, 2, "CGENCHK");
1024                 dev_warn(&cdev->dev, "The qeth device driver "
1025                         "failed to recover an error on the device\n");
1026                 QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x\n",
1027                         dev_name(&cdev->dev), dstat, cstat);
1028                 print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET,
1029                                 16, 1, irb, 64, 1);
1030                 return 1;
1031         }
1032
1033         if (dstat & DEV_STAT_UNIT_CHECK) {
1034                 if (sense[SENSE_RESETTING_EVENT_BYTE] &
1035                     SENSE_RESETTING_EVENT_FLAG) {
1036                         QETH_CARD_TEXT(card, 2, "REVIND");
1037                         return 1;
1038                 }
1039                 if (sense[SENSE_COMMAND_REJECT_BYTE] &
1040                     SENSE_COMMAND_REJECT_FLAG) {
1041                         QETH_CARD_TEXT(card, 2, "CMDREJi");
1042                         return 1;
1043                 }
1044                 if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) {
1045                         QETH_CARD_TEXT(card, 2, "AFFE");
1046                         return 1;
1047                 }
1048                 if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) {
1049                         QETH_CARD_TEXT(card, 2, "ZEROSEN");
1050                         return 0;
1051                 }
1052                 QETH_CARD_TEXT(card, 2, "DGENCHK");
1053                         return 1;
1054         }
1055         return 0;
1056 }
1057
1058 static long __qeth_check_irb_error(struct ccw_device *cdev,
1059                 unsigned long intparm, struct irb *irb)
1060 {
1061         struct qeth_card *card;
1062
1063         card = CARD_FROM_CDEV(cdev);
1064
1065         if (!card || !IS_ERR(irb))
1066                 return 0;
1067
1068         switch (PTR_ERR(irb)) {
1069         case -EIO:
1070                 QETH_DBF_MESSAGE(2, "%s i/o-error on device\n",
1071                         dev_name(&cdev->dev));
1072                 QETH_CARD_TEXT(card, 2, "ckirberr");
1073                 QETH_CARD_TEXT_(card, 2, "  rc%d", -EIO);
1074                 break;
1075         case -ETIMEDOUT:
1076                 dev_warn(&cdev->dev, "A hardware operation timed out"
1077                         " on the device\n");
1078                 QETH_CARD_TEXT(card, 2, "ckirberr");
1079                 QETH_CARD_TEXT_(card, 2, "  rc%d", -ETIMEDOUT);
1080                 if (intparm == QETH_RCD_PARM) {
1081                         if (card->data.ccwdev == cdev) {
1082                                 card->data.state = CH_STATE_DOWN;
1083                                 wake_up(&card->wait_q);
1084                         }
1085                 }
1086                 break;
1087         default:
1088                 QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n",
1089                         dev_name(&cdev->dev), PTR_ERR(irb));
1090                 QETH_CARD_TEXT(card, 2, "ckirberr");
1091                 QETH_CARD_TEXT(card, 2, "  rc???");
1092         }
1093         return PTR_ERR(irb);
1094 }
1095
1096 static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
1097                 struct irb *irb)
1098 {
1099         int rc;
1100         int cstat, dstat;
1101         struct qeth_channel *channel;
1102         struct qeth_card *card;
1103         struct qeth_cmd_buffer *iob;
1104
1105         if (__qeth_check_irb_error(cdev, intparm, irb))
1106                 return;
1107         cstat = irb->scsw.cmd.cstat;
1108         dstat = irb->scsw.cmd.dstat;
1109
1110         card = CARD_FROM_CDEV(cdev);
1111         if (!card)
1112                 return;
1113
1114         QETH_CARD_TEXT(card, 5, "irq");
1115
1116         if (card->read.ccwdev == cdev) {
1117                 channel = &card->read;
1118                 QETH_CARD_TEXT(card, 5, "read");
1119         } else if (card->write.ccwdev == cdev) {
1120                 channel = &card->write;
1121                 QETH_CARD_TEXT(card, 5, "write");
1122         } else {
1123                 channel = &card->data;
1124                 QETH_CARD_TEXT(card, 5, "data");
1125         }
1126         atomic_set(&channel->irq_pending, 0);
1127
1128         if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC))
1129                 channel->state = CH_STATE_STOPPED;
1130
1131         if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC))
1132                 channel->state = CH_STATE_HALTED;
1133
1134         /*let's wake up immediately on data channel*/
1135         if ((channel == &card->data) && (intparm != 0) &&
1136             (intparm != QETH_RCD_PARM))
1137                 goto out;
1138
1139         if (intparm == QETH_CLEAR_CHANNEL_PARM) {
1140                 QETH_CARD_TEXT(card, 6, "clrchpar");
1141                 /* we don't have to handle this further */
1142                 intparm = 0;
1143         }
1144         if (intparm == QETH_HALT_CHANNEL_PARM) {
1145                 QETH_CARD_TEXT(card, 6, "hltchpar");
1146                 /* we don't have to handle this further */
1147                 intparm = 0;
1148         }
1149         if ((dstat & DEV_STAT_UNIT_EXCEP) ||
1150             (dstat & DEV_STAT_UNIT_CHECK) ||
1151             (cstat)) {
1152                 if (irb->esw.esw0.erw.cons) {
1153                         dev_warn(&channel->ccwdev->dev,
1154                                 "The qeth device driver failed to recover "
1155                                 "an error on the device\n");
1156                         QETH_DBF_MESSAGE(2, "%s sense data available. cstat "
1157                                 "0x%X dstat 0x%X\n",
1158                                 dev_name(&channel->ccwdev->dev), cstat, dstat);
1159                         print_hex_dump(KERN_WARNING, "qeth: irb ",
1160                                 DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1);
1161                         print_hex_dump(KERN_WARNING, "qeth: sense data ",
1162                                 DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1);
1163                 }
1164                 if (intparm == QETH_RCD_PARM) {
1165                         channel->state = CH_STATE_DOWN;
1166                         goto out;
1167                 }
1168                 rc = qeth_get_problem(cdev, irb);
1169                 if (rc) {
1170                         card->read_or_write_problem = 1;
1171                         qeth_clear_ipacmd_list(card);
1172                         qeth_schedule_recovery(card);
1173                         goto out;
1174                 }
1175         }
1176
1177         if (intparm == QETH_RCD_PARM) {
1178                 channel->state = CH_STATE_RCD_DONE;
1179                 goto out;
1180         }
1181         if (channel == &card->data)
1182                 return;
1183         if (channel == &card->read &&
1184             channel->state == CH_STATE_UP)
1185                 __qeth_issue_next_read(card);
1186
1187         if (intparm) {
1188                 iob = (struct qeth_cmd_buffer *) __va((addr_t)intparm);
1189                 if (iob->callback)
1190                         iob->callback(iob->channel, iob);
1191         }
1192
1193 out:
1194         wake_up(&card->wait_q);
1195         return;
1196 }
1197
1198 static void qeth_notify_skbs(struct qeth_qdio_out_q *q,
1199                 struct qeth_qdio_out_buffer *buf,
1200                 enum iucv_tx_notify notification)
1201 {
1202         struct sk_buff *skb;
1203
1204         if (skb_queue_empty(&buf->skb_list))
1205                 goto out;
1206         skb = skb_peek(&buf->skb_list);
1207         while (skb) {
1208                 QETH_CARD_TEXT_(q->card, 5, "skbn%d", notification);
1209                 QETH_CARD_TEXT_(q->card, 5, "%lx", (long) skb);
1210                 if (be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) {
1211                         if (skb->sk) {
1212                                 struct iucv_sock *iucv = iucv_sk(skb->sk);
1213                                 iucv->sk_txnotify(skb, notification);
1214                         }
1215                 }
1216                 if (skb_queue_is_last(&buf->skb_list, skb))
1217                         skb = NULL;
1218                 else
1219                         skb = skb_queue_next(&buf->skb_list, skb);
1220         }
1221 out:
1222         return;
1223 }
1224
1225 static void qeth_release_skbs(struct qeth_qdio_out_buffer *buf)
1226 {
1227         struct sk_buff *skb;
1228         struct iucv_sock *iucv;
1229         int notify_general_error = 0;
1230
1231         if (atomic_read(&buf->state) == QETH_QDIO_BUF_PENDING)
1232                 notify_general_error = 1;
1233
1234         /* release may never happen from within CQ tasklet scope */
1235         WARN_ON_ONCE(atomic_read(&buf->state) == QETH_QDIO_BUF_IN_CQ);
1236
1237         skb = skb_dequeue(&buf->skb_list);
1238         while (skb) {
1239                 QETH_CARD_TEXT(buf->q->card, 5, "skbr");
1240                 QETH_CARD_TEXT_(buf->q->card, 5, "%lx", (long) skb);
1241                 if (notify_general_error &&
1242                     be16_to_cpu(skb->protocol) == ETH_P_AF_IUCV) {
1243                         if (skb->sk) {
1244                                 iucv = iucv_sk(skb->sk);
1245                                 iucv->sk_txnotify(skb, TX_NOTIFY_GENERALERROR);
1246                         }
1247                 }
1248                 refcount_dec(&skb->users);
1249                 dev_kfree_skb_any(skb);
1250                 skb = skb_dequeue(&buf->skb_list);
1251         }
1252 }
1253
1254 static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue,
1255                 struct qeth_qdio_out_buffer *buf,
1256                 enum qeth_qdio_buffer_states newbufstate)
1257 {
1258         int i;
1259
1260         /* is PCI flag set on buffer? */
1261         if (buf->buffer->element[0].sflags & SBAL_SFLAGS0_PCI_REQ)
1262                 atomic_dec(&queue->set_pci_flags_count);
1263
1264         if (newbufstate == QETH_QDIO_BUF_EMPTY) {
1265                 qeth_release_skbs(buf);
1266         }
1267         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) {
1268                 if (buf->buffer->element[i].addr && buf->is_header[i])
1269                         kmem_cache_free(qeth_core_header_cache,
1270                                 buf->buffer->element[i].addr);
1271                 buf->is_header[i] = 0;
1272                 buf->buffer->element[i].length = 0;
1273                 buf->buffer->element[i].addr = NULL;
1274                 buf->buffer->element[i].eflags = 0;
1275                 buf->buffer->element[i].sflags = 0;
1276         }
1277         buf->buffer->element[15].eflags = 0;
1278         buf->buffer->element[15].sflags = 0;
1279         buf->next_element_to_fill = 0;
1280         atomic_set(&buf->state, newbufstate);
1281 }
1282
1283 static void qeth_clear_outq_buffers(struct qeth_qdio_out_q *q, int free)
1284 {
1285         int j;
1286
1287         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
1288                 if (!q->bufs[j])
1289                         continue;
1290                 qeth_cleanup_handled_pending(q, j, 1);
1291                 qeth_clear_output_buffer(q, q->bufs[j], QETH_QDIO_BUF_EMPTY);
1292                 if (free) {
1293                         kmem_cache_free(qeth_qdio_outbuf_cache, q->bufs[j]);
1294                         q->bufs[j] = NULL;
1295                 }
1296         }
1297 }
1298
1299 void qeth_clear_qdio_buffers(struct qeth_card *card)
1300 {
1301         int i;
1302
1303         QETH_CARD_TEXT(card, 2, "clearqdbf");
1304         /* clear outbound buffers to free skbs */
1305         for (i = 0; i < card->qdio.no_out_queues; ++i) {
1306                 if (card->qdio.out_qs[i]) {
1307                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 0);
1308                 }
1309         }
1310 }
1311 EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers);
1312
1313 static void qeth_free_buffer_pool(struct qeth_card *card)
1314 {
1315         struct qeth_buffer_pool_entry *pool_entry, *tmp;
1316         int i = 0;
1317         list_for_each_entry_safe(pool_entry, tmp,
1318                                  &card->qdio.init_pool.entry_list, init_list){
1319                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i)
1320                         free_page((unsigned long)pool_entry->elements[i]);
1321                 list_del(&pool_entry->init_list);
1322                 kfree(pool_entry);
1323         }
1324 }
1325
1326 static void qeth_clean_channel(struct qeth_channel *channel)
1327 {
1328         int cnt;
1329
1330         QETH_DBF_TEXT(SETUP, 2, "freech");
1331         for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++)
1332                 kfree(channel->iob[cnt].data);
1333 }
1334
1335 static void qeth_set_single_write_queues(struct qeth_card *card)
1336 {
1337         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1338             (card->qdio.no_out_queues == 4))
1339                 qeth_free_qdio_buffers(card);
1340
1341         card->qdio.no_out_queues = 1;
1342         if (card->qdio.default_out_queue != 0)
1343                 dev_info(&card->gdev->dev, "Priority Queueing not supported\n");
1344
1345         card->qdio.default_out_queue = 0;
1346 }
1347
1348 static void qeth_set_multiple_write_queues(struct qeth_card *card)
1349 {
1350         if ((atomic_read(&card->qdio.state) != QETH_QDIO_UNINITIALIZED) &&
1351             (card->qdio.no_out_queues == 1)) {
1352                 qeth_free_qdio_buffers(card);
1353                 card->qdio.default_out_queue = 2;
1354         }
1355         card->qdio.no_out_queues = 4;
1356 }
1357
1358 static void qeth_update_from_chp_desc(struct qeth_card *card)
1359 {
1360         struct ccw_device *ccwdev;
1361         struct channel_path_desc_fmt0 *chp_dsc;
1362
1363         QETH_DBF_TEXT(SETUP, 2, "chp_desc");
1364
1365         ccwdev = card->data.ccwdev;
1366         chp_dsc = ccw_device_get_chp_desc(ccwdev, 0);
1367         if (!chp_dsc)
1368                 goto out;
1369
1370         card->info.func_level = 0x4100 + chp_dsc->desc;
1371         if (card->info.type == QETH_CARD_TYPE_IQD)
1372                 goto out;
1373
1374         /* CHPP field bit 6 == 1 -> single queue */
1375         if ((chp_dsc->chpp & 0x02) == 0x02)
1376                 qeth_set_single_write_queues(card);
1377         else
1378                 qeth_set_multiple_write_queues(card);
1379 out:
1380         kfree(chp_dsc);
1381         QETH_DBF_TEXT_(SETUP, 2, "nr:%x", card->qdio.no_out_queues);
1382         QETH_DBF_TEXT_(SETUP, 2, "lvl:%02x", card->info.func_level);
1383 }
1384
1385 static void qeth_init_qdio_info(struct qeth_card *card)
1386 {
1387         QETH_DBF_TEXT(SETUP, 4, "intqdinf");
1388         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
1389         /* inbound */
1390         card->qdio.no_in_queues = 1;
1391         card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
1392         if (card->info.type == QETH_CARD_TYPE_IQD)
1393                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_HSDEFAULT;
1394         else
1395                 card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT;
1396         card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count;
1397         INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list);
1398         INIT_LIST_HEAD(&card->qdio.init_pool.entry_list);
1399 }
1400
1401 static void qeth_set_intial_options(struct qeth_card *card)
1402 {
1403         card->options.route4.type = NO_ROUTER;
1404         card->options.route6.type = NO_ROUTER;
1405         card->options.fake_broadcast = 0;
1406         card->options.performance_stats = 0;
1407         card->options.rx_sg_cb = QETH_RX_SG_CB;
1408         card->options.isolation = ISOLATION_MODE_NONE;
1409         card->options.cq = QETH_CQ_DISABLED;
1410 }
1411
1412 static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread)
1413 {
1414         unsigned long flags;
1415         int rc = 0;
1416
1417         spin_lock_irqsave(&card->thread_mask_lock, flags);
1418         QETH_CARD_TEXT_(card, 4, "  %02x%02x%02x",
1419                         (u8) card->thread_start_mask,
1420                         (u8) card->thread_allowed_mask,
1421                         (u8) card->thread_running_mask);
1422         rc = (card->thread_start_mask & thread);
1423         spin_unlock_irqrestore(&card->thread_mask_lock, flags);
1424         return rc;
1425 }
1426
1427 static void qeth_start_kernel_thread(struct work_struct *work)
1428 {
1429         struct task_struct *ts;
1430         struct qeth_card *card = container_of(work, struct qeth_card,
1431                                         kernel_thread_starter);
1432         QETH_CARD_TEXT(card , 2, "strthrd");
1433
1434         if (card->read.state != CH_STATE_UP &&
1435             card->write.state != CH_STATE_UP)
1436                 return;
1437         if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) {
1438                 ts = kthread_run(card->discipline->recover, (void *)card,
1439                                 "qeth_recover");
1440                 if (IS_ERR(ts)) {
1441                         qeth_clear_thread_start_bit(card, QETH_RECOVER_THREAD);
1442                         qeth_clear_thread_running_bit(card,
1443                                 QETH_RECOVER_THREAD);
1444                 }
1445         }
1446 }
1447
1448 static void qeth_buffer_reclaim_work(struct work_struct *);
1449 static int qeth_setup_card(struct qeth_card *card)
1450 {
1451
1452         QETH_DBF_TEXT(SETUP, 2, "setupcrd");
1453         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1454
1455         card->read.state  = CH_STATE_DOWN;
1456         card->write.state = CH_STATE_DOWN;
1457         card->data.state  = CH_STATE_DOWN;
1458         card->state = CARD_STATE_DOWN;
1459         card->lan_online = 0;
1460         card->read_or_write_problem = 0;
1461         card->dev = NULL;
1462         spin_lock_init(&card->vlanlock);
1463         spin_lock_init(&card->mclock);
1464         spin_lock_init(&card->lock);
1465         spin_lock_init(&card->ip_lock);
1466         spin_lock_init(&card->thread_mask_lock);
1467         mutex_init(&card->conf_mutex);
1468         mutex_init(&card->discipline_mutex);
1469         card->thread_start_mask = 0;
1470         card->thread_allowed_mask = 0;
1471         card->thread_running_mask = 0;
1472         INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread);
1473         INIT_LIST_HEAD(&card->cmd_waiter_list);
1474         init_waitqueue_head(&card->wait_q);
1475         /* initial options */
1476         qeth_set_intial_options(card);
1477         /* IP address takeover */
1478         INIT_LIST_HEAD(&card->ipato.entries);
1479         card->ipato.enabled = false;
1480         card->ipato.invert4 = false;
1481         card->ipato.invert6 = false;
1482         /* init QDIO stuff */
1483         qeth_init_qdio_info(card);
1484         INIT_DELAYED_WORK(&card->buffer_reclaim_work, qeth_buffer_reclaim_work);
1485         INIT_WORK(&card->close_dev_work, qeth_close_dev_handler);
1486         return 0;
1487 }
1488
1489 static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr)
1490 {
1491         struct qeth_card *card = container_of(slr, struct qeth_card,
1492                                         qeth_service_level);
1493         if (card->info.mcl_level[0])
1494                 seq_printf(m, "qeth: %s firmware level %s\n",
1495                         CARD_BUS_ID(card), card->info.mcl_level);
1496 }
1497
1498 static struct qeth_card *qeth_alloc_card(void)
1499 {
1500         struct qeth_card *card;
1501
1502         QETH_DBF_TEXT(SETUP, 2, "alloccrd");
1503         card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL);
1504         if (!card)
1505                 goto out;
1506         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
1507         if (qeth_setup_channel(&card->read))
1508                 goto out_ip;
1509         if (qeth_setup_channel(&card->write))
1510                 goto out_channel;
1511         card->options.layer2 = -1;
1512         card->qeth_service_level.seq_print = qeth_core_sl_print;
1513         register_service_level(&card->qeth_service_level);
1514         return card;
1515
1516 out_channel:
1517         qeth_clean_channel(&card->read);
1518 out_ip:
1519         kfree(card);
1520 out:
1521         return NULL;
1522 }
1523
1524 static void qeth_determine_card_type(struct qeth_card *card)
1525 {
1526         QETH_DBF_TEXT(SETUP, 2, "detcdtyp");
1527
1528         card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT;
1529         card->qdio.default_out_queue = QETH_DEFAULT_QUEUE;
1530         card->info.type = CARD_RDEV(card)->id.driver_info;
1531         card->qdio.no_out_queues = QETH_MAX_QUEUES;
1532         if (card->info.type == QETH_CARD_TYPE_IQD)
1533                 card->info.is_multicast_different = 0x0103;
1534         qeth_update_from_chp_desc(card);
1535 }
1536
1537 static int qeth_clear_channel(struct qeth_channel *channel)
1538 {
1539         unsigned long flags;
1540         struct qeth_card *card;
1541         int rc;
1542
1543         card = CARD_FROM_CDEV(channel->ccwdev);
1544         QETH_CARD_TEXT(card, 3, "clearch");
1545         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1546         rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM);
1547         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1548
1549         if (rc)
1550                 return rc;
1551         rc = wait_event_interruptible_timeout(card->wait_q,
1552                         channel->state == CH_STATE_STOPPED, QETH_TIMEOUT);
1553         if (rc == -ERESTARTSYS)
1554                 return rc;
1555         if (channel->state != CH_STATE_STOPPED)
1556                 return -ETIME;
1557         channel->state = CH_STATE_DOWN;
1558         return 0;
1559 }
1560
1561 static int qeth_halt_channel(struct qeth_channel *channel)
1562 {
1563         unsigned long flags;
1564         struct qeth_card *card;
1565         int rc;
1566
1567         card = CARD_FROM_CDEV(channel->ccwdev);
1568         QETH_CARD_TEXT(card, 3, "haltch");
1569         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1570         rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM);
1571         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1572
1573         if (rc)
1574                 return rc;
1575         rc = wait_event_interruptible_timeout(card->wait_q,
1576                         channel->state == CH_STATE_HALTED, QETH_TIMEOUT);
1577         if (rc == -ERESTARTSYS)
1578                 return rc;
1579         if (channel->state != CH_STATE_HALTED)
1580                 return -ETIME;
1581         return 0;
1582 }
1583
1584 static int qeth_halt_channels(struct qeth_card *card)
1585 {
1586         int rc1 = 0, rc2 = 0, rc3 = 0;
1587
1588         QETH_CARD_TEXT(card, 3, "haltchs");
1589         rc1 = qeth_halt_channel(&card->read);
1590         rc2 = qeth_halt_channel(&card->write);
1591         rc3 = qeth_halt_channel(&card->data);
1592         if (rc1)
1593                 return rc1;
1594         if (rc2)
1595                 return rc2;
1596         return rc3;
1597 }
1598
1599 static int qeth_clear_channels(struct qeth_card *card)
1600 {
1601         int rc1 = 0, rc2 = 0, rc3 = 0;
1602
1603         QETH_CARD_TEXT(card, 3, "clearchs");
1604         rc1 = qeth_clear_channel(&card->read);
1605         rc2 = qeth_clear_channel(&card->write);
1606         rc3 = qeth_clear_channel(&card->data);
1607         if (rc1)
1608                 return rc1;
1609         if (rc2)
1610                 return rc2;
1611         return rc3;
1612 }
1613
1614 static int qeth_clear_halt_card(struct qeth_card *card, int halt)
1615 {
1616         int rc = 0;
1617
1618         QETH_CARD_TEXT(card, 3, "clhacrd");
1619
1620         if (halt)
1621                 rc = qeth_halt_channels(card);
1622         if (rc)
1623                 return rc;
1624         return qeth_clear_channels(card);
1625 }
1626
1627 int qeth_qdio_clear_card(struct qeth_card *card, int use_halt)
1628 {
1629         int rc = 0;
1630
1631         QETH_CARD_TEXT(card, 3, "qdioclr");
1632         switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED,
1633                 QETH_QDIO_CLEANING)) {
1634         case QETH_QDIO_ESTABLISHED:
1635                 if (card->info.type == QETH_CARD_TYPE_IQD)
1636                         rc = qdio_shutdown(CARD_DDEV(card),
1637                                 QDIO_FLAG_CLEANUP_USING_HALT);
1638                 else
1639                         rc = qdio_shutdown(CARD_DDEV(card),
1640                                 QDIO_FLAG_CLEANUP_USING_CLEAR);
1641                 if (rc)
1642                         QETH_CARD_TEXT_(card, 3, "1err%d", rc);
1643                 atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
1644                 break;
1645         case QETH_QDIO_CLEANING:
1646                 return rc;
1647         default:
1648                 break;
1649         }
1650         rc = qeth_clear_halt_card(card, use_halt);
1651         if (rc)
1652                 QETH_CARD_TEXT_(card, 3, "2err%d", rc);
1653         card->state = CARD_STATE_DOWN;
1654         return rc;
1655 }
1656 EXPORT_SYMBOL_GPL(qeth_qdio_clear_card);
1657
1658 static int qeth_read_conf_data(struct qeth_card *card, void **buffer,
1659                                int *length)
1660 {
1661         struct ciw *ciw;
1662         char *rcd_buf;
1663         int ret;
1664         struct qeth_channel *channel = &card->data;
1665         unsigned long flags;
1666
1667         /*
1668          * scan for RCD command in extended SenseID data
1669          */
1670         ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
1671         if (!ciw || ciw->cmd == 0)
1672                 return -EOPNOTSUPP;
1673         rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA);
1674         if (!rcd_buf)
1675                 return -ENOMEM;
1676
1677         channel->ccw.cmd_code = ciw->cmd;
1678         channel->ccw.cda = (__u32) __pa(rcd_buf);
1679         channel->ccw.count = ciw->count;
1680         channel->ccw.flags = CCW_FLAG_SLI;
1681         channel->state = CH_STATE_RCD;
1682         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1683         ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw,
1684                                        QETH_RCD_PARM, LPM_ANYPATH, 0,
1685                                        QETH_RCD_TIMEOUT);
1686         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1687         if (!ret)
1688                 wait_event(card->wait_q,
1689                            (channel->state == CH_STATE_RCD_DONE ||
1690                             channel->state == CH_STATE_DOWN));
1691         if (channel->state == CH_STATE_DOWN)
1692                 ret = -EIO;
1693         else
1694                 channel->state = CH_STATE_DOWN;
1695         if (ret) {
1696                 kfree(rcd_buf);
1697                 *buffer = NULL;
1698                 *length = 0;
1699         } else {
1700                 *length = ciw->count;
1701                 *buffer = rcd_buf;
1702         }
1703         return ret;
1704 }
1705
1706 static void qeth_configure_unitaddr(struct qeth_card *card, char *prcd)
1707 {
1708         QETH_DBF_TEXT(SETUP, 2, "cfgunit");
1709         card->info.chpid = prcd[30];
1710         card->info.unit_addr2 = prcd[31];
1711         card->info.cula = prcd[63];
1712         card->info.guestlan = ((prcd[0x10] == _ascebc['V']) &&
1713                                (prcd[0x11] == _ascebc['M']));
1714 }
1715
1716 static enum qeth_discipline_id qeth_vm_detect_layer(struct qeth_card *card)
1717 {
1718         enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1719         struct diag26c_vnic_resp *response = NULL;
1720         struct diag26c_vnic_req *request = NULL;
1721         struct ccw_dev_id id;
1722         char userid[80];
1723         int rc = 0;
1724
1725         QETH_DBF_TEXT(SETUP, 2, "vmlayer");
1726
1727         cpcmd("QUERY USERID", userid, sizeof(userid), &rc);
1728         if (rc)
1729                 goto out;
1730
1731         request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
1732         response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
1733         if (!request || !response) {
1734                 rc = -ENOMEM;
1735                 goto out;
1736         }
1737
1738         ccw_device_get_id(CARD_RDEV(card), &id);
1739         request->resp_buf_len = sizeof(*response);
1740         request->resp_version = DIAG26C_VERSION6_VM65918;
1741         request->req_format = DIAG26C_VNIC_INFO;
1742         ASCEBC(userid, 8);
1743         memcpy(&request->sys_name, userid, 8);
1744         request->devno = id.devno;
1745
1746         QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1747         rc = diag26c(request, response, DIAG26C_PORT_VNIC);
1748         QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
1749         if (rc)
1750                 goto out;
1751         QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
1752
1753         if (request->resp_buf_len < sizeof(*response) ||
1754             response->version != request->resp_version) {
1755                 rc = -EIO;
1756                 goto out;
1757         }
1758
1759         if (response->protocol == VNIC_INFO_PROT_L2)
1760                 disc = QETH_DISCIPLINE_LAYER2;
1761         else if (response->protocol == VNIC_INFO_PROT_L3)
1762                 disc = QETH_DISCIPLINE_LAYER3;
1763
1764 out:
1765         kfree(response);
1766         kfree(request);
1767         if (rc)
1768                 QETH_DBF_TEXT_(SETUP, 2, "err%x", rc);
1769         return disc;
1770 }
1771
1772 /* Determine whether the device requires a specific layer discipline */
1773 static enum qeth_discipline_id qeth_enforce_discipline(struct qeth_card *card)
1774 {
1775         enum qeth_discipline_id disc = QETH_DISCIPLINE_UNDETERMINED;
1776
1777         if (card->info.type == QETH_CARD_TYPE_OSM ||
1778             card->info.type == QETH_CARD_TYPE_OSN)
1779                 disc = QETH_DISCIPLINE_LAYER2;
1780         else if (card->info.guestlan)
1781                 disc = (card->info.type == QETH_CARD_TYPE_IQD) ?
1782                                 QETH_DISCIPLINE_LAYER3 :
1783                                 qeth_vm_detect_layer(card);
1784
1785         switch (disc) {
1786         case QETH_DISCIPLINE_LAYER2:
1787                 QETH_DBF_TEXT(SETUP, 3, "force l2");
1788                 break;
1789         case QETH_DISCIPLINE_LAYER3:
1790                 QETH_DBF_TEXT(SETUP, 3, "force l3");
1791                 break;
1792         default:
1793                 QETH_DBF_TEXT(SETUP, 3, "force no");
1794         }
1795
1796         return disc;
1797 }
1798
1799 static void qeth_configure_blkt_default(struct qeth_card *card, char *prcd)
1800 {
1801         QETH_DBF_TEXT(SETUP, 2, "cfgblkt");
1802
1803         if (prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
1804             prcd[76] >= 0xF1 && prcd[76] <= 0xF4) {
1805                 card->info.blkt.time_total = 0;
1806                 card->info.blkt.inter_packet = 0;
1807                 card->info.blkt.inter_packet_jumbo = 0;
1808         } else {
1809                 card->info.blkt.time_total = 250;
1810                 card->info.blkt.inter_packet = 5;
1811                 card->info.blkt.inter_packet_jumbo = 15;
1812         }
1813 }
1814
1815 static void qeth_init_tokens(struct qeth_card *card)
1816 {
1817         card->token.issuer_rm_w = 0x00010103UL;
1818         card->token.cm_filter_w = 0x00010108UL;
1819         card->token.cm_connection_w = 0x0001010aUL;
1820         card->token.ulp_filter_w = 0x0001010bUL;
1821         card->token.ulp_connection_w = 0x0001010dUL;
1822 }
1823
1824 static void qeth_init_func_level(struct qeth_card *card)
1825 {
1826         switch (card->info.type) {
1827         case QETH_CARD_TYPE_IQD:
1828                 card->info.func_level = QETH_IDX_FUNC_LEVEL_IQD;
1829                 break;
1830         case QETH_CARD_TYPE_OSD:
1831         case QETH_CARD_TYPE_OSN:
1832                 card->info.func_level = QETH_IDX_FUNC_LEVEL_OSD;
1833                 break;
1834         default:
1835                 break;
1836         }
1837 }
1838
1839 static int qeth_idx_activate_get_answer(struct qeth_channel *channel,
1840                 void (*idx_reply_cb)(struct qeth_channel *,
1841                         struct qeth_cmd_buffer *))
1842 {
1843         struct qeth_cmd_buffer *iob;
1844         unsigned long flags;
1845         int rc;
1846         struct qeth_card *card;
1847
1848         QETH_DBF_TEXT(SETUP, 2, "idxanswr");
1849         card = CARD_FROM_CDEV(channel->ccwdev);
1850         iob = qeth_get_buffer(channel);
1851         if (!iob)
1852                 return -ENOMEM;
1853         iob->callback = idx_reply_cb;
1854         memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1));
1855         channel->ccw.count = QETH_BUFSIZE;
1856         channel->ccw.cda = (__u32) __pa(iob->data);
1857
1858         wait_event(card->wait_q,
1859                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1860         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1861         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1862         rc = ccw_device_start(channel->ccwdev,
1863                               &channel->ccw, (addr_t) iob, 0, 0);
1864         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1865
1866         if (rc) {
1867                 QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc);
1868                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
1869                 atomic_set(&channel->irq_pending, 0);
1870                 wake_up(&card->wait_q);
1871                 return rc;
1872         }
1873         rc = wait_event_interruptible_timeout(card->wait_q,
1874                          channel->state == CH_STATE_UP, QETH_TIMEOUT);
1875         if (rc == -ERESTARTSYS)
1876                 return rc;
1877         if (channel->state != CH_STATE_UP) {
1878                 rc = -ETIME;
1879                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
1880                 qeth_clear_cmd_buffers(channel);
1881         } else
1882                 rc = 0;
1883         return rc;
1884 }
1885
1886 static int qeth_idx_activate_channel(struct qeth_channel *channel,
1887                 void (*idx_reply_cb)(struct qeth_channel *,
1888                         struct qeth_cmd_buffer *))
1889 {
1890         struct qeth_card *card;
1891         struct qeth_cmd_buffer *iob;
1892         unsigned long flags;
1893         __u16 temp;
1894         __u8 tmp;
1895         int rc;
1896         struct ccw_dev_id temp_devid;
1897
1898         card = CARD_FROM_CDEV(channel->ccwdev);
1899
1900         QETH_DBF_TEXT(SETUP, 2, "idxactch");
1901
1902         iob = qeth_get_buffer(channel);
1903         if (!iob)
1904                 return -ENOMEM;
1905         iob->callback = idx_reply_cb;
1906         memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1));
1907         channel->ccw.count = IDX_ACTIVATE_SIZE;
1908         channel->ccw.cda = (__u32) __pa(iob->data);
1909         if (channel == &card->write) {
1910                 memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE);
1911                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1912                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1913                 card->seqno.trans_hdr++;
1914         } else {
1915                 memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE);
1916                 memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
1917                        &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
1918         }
1919         tmp = ((__u8)card->info.portno) | 0x80;
1920         memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1);
1921         memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
1922                &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH);
1923         memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data),
1924                &card->info.func_level, sizeof(__u16));
1925         ccw_device_get_id(CARD_DDEV(card), &temp_devid);
1926         memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2);
1927         temp = (card->info.cula << 8) + card->info.unit_addr2;
1928         memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2);
1929
1930         wait_event(card->wait_q,
1931                    atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0);
1932         QETH_DBF_TEXT(SETUP, 6, "noirqpnd");
1933         spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
1934         rc = ccw_device_start(channel->ccwdev,
1935                               &channel->ccw, (addr_t) iob, 0, 0);
1936         spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
1937
1938         if (rc) {
1939                 QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n",
1940                         rc);
1941                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
1942                 atomic_set(&channel->irq_pending, 0);
1943                 wake_up(&card->wait_q);
1944                 return rc;
1945         }
1946         rc = wait_event_interruptible_timeout(card->wait_q,
1947                         channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT);
1948         if (rc == -ERESTARTSYS)
1949                 return rc;
1950         if (channel->state != CH_STATE_ACTIVATING) {
1951                 dev_warn(&channel->ccwdev->dev, "The qeth device driver"
1952                         " failed to recover an error on the device\n");
1953                 QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n",
1954                         dev_name(&channel->ccwdev->dev));
1955                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME);
1956                 qeth_clear_cmd_buffers(channel);
1957                 return -ETIME;
1958         }
1959         return qeth_idx_activate_get_answer(channel, idx_reply_cb);
1960 }
1961
1962 static int qeth_peer_func_level(int level)
1963 {
1964         if ((level & 0xff) == 8)
1965                 return (level & 0xff) + 0x400;
1966         if (((level >> 8) & 3) == 1)
1967                 return (level & 0xff) + 0x200;
1968         return level;
1969 }
1970
1971 static void qeth_idx_write_cb(struct qeth_channel *channel,
1972                 struct qeth_cmd_buffer *iob)
1973 {
1974         struct qeth_card *card;
1975         __u16 temp;
1976
1977         QETH_DBF_TEXT(SETUP , 2, "idxwrcb");
1978
1979         if (channel->state == CH_STATE_DOWN) {
1980                 channel->state = CH_STATE_ACTIVATING;
1981                 goto out;
1982         }
1983         card = CARD_FROM_CDEV(channel->ccwdev);
1984
1985         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
1986                 if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == QETH_IDX_ACT_ERR_EXCL)
1987                         dev_err(&card->write.ccwdev->dev,
1988                                 "The adapter is used exclusively by another "
1989                                 "host\n");
1990                 else
1991                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:"
1992                                 " negative reply\n",
1993                                 dev_name(&card->write.ccwdev->dev));
1994                 goto out;
1995         }
1996         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
1997         if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) {
1998                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: "
1999                         "function level mismatch (sent: 0x%x, received: "
2000                         "0x%x)\n", dev_name(&card->write.ccwdev->dev),
2001                         card->info.func_level, temp);
2002                 goto out;
2003         }
2004         channel->state = CH_STATE_UP;
2005 out:
2006         qeth_release_buffer(channel, iob);
2007 }
2008
2009 static void qeth_idx_read_cb(struct qeth_channel *channel,
2010                 struct qeth_cmd_buffer *iob)
2011 {
2012         struct qeth_card *card;
2013         __u16 temp;
2014
2015         QETH_DBF_TEXT(SETUP , 2, "idxrdcb");
2016         if (channel->state == CH_STATE_DOWN) {
2017                 channel->state = CH_STATE_ACTIVATING;
2018                 goto out;
2019         }
2020
2021         card = CARD_FROM_CDEV(channel->ccwdev);
2022         if (qeth_check_idx_response(card, iob->data))
2023                         goto out;
2024
2025         if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) {
2026                 switch (QETH_IDX_ACT_CAUSE_CODE(iob->data)) {
2027                 case QETH_IDX_ACT_ERR_EXCL:
2028                         dev_err(&card->write.ccwdev->dev,
2029                                 "The adapter is used exclusively by another "
2030                                 "host\n");
2031                         break;
2032                 case QETH_IDX_ACT_ERR_AUTH:
2033                 case QETH_IDX_ACT_ERR_AUTH_USER:
2034                         dev_err(&card->read.ccwdev->dev,
2035                                 "Setting the device online failed because of "
2036                                 "insufficient authorization\n");
2037                         break;
2038                 default:
2039                         QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:"
2040                                 " negative reply\n",
2041                                 dev_name(&card->read.ccwdev->dev));
2042                 }
2043                 QETH_CARD_TEXT_(card, 2, "idxread%c",
2044                         QETH_IDX_ACT_CAUSE_CODE(iob->data));
2045                 goto out;
2046         }
2047
2048         memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2);
2049         if (temp != qeth_peer_func_level(card->info.func_level)) {
2050                 QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function "
2051                         "level mismatch (sent: 0x%x, received: 0x%x)\n",
2052                         dev_name(&card->read.ccwdev->dev),
2053                         card->info.func_level, temp);
2054                 goto out;
2055         }
2056         memcpy(&card->token.issuer_rm_r,
2057                QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data),
2058                QETH_MPC_TOKEN_LENGTH);
2059         memcpy(&card->info.mcl_level[0],
2060                QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
2061         channel->state = CH_STATE_UP;
2062 out:
2063         qeth_release_buffer(channel, iob);
2064 }
2065
2066 void qeth_prepare_control_data(struct qeth_card *card, int len,
2067                 struct qeth_cmd_buffer *iob)
2068 {
2069         qeth_setup_ccw(&card->write, iob->data, len);
2070         iob->callback = qeth_release_buffer;
2071
2072         memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data),
2073                &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH);
2074         card->seqno.trans_hdr++;
2075         memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data),
2076                &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH);
2077         card->seqno.pdu_hdr++;
2078         memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
2079                &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
2080         QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
2081 }
2082 EXPORT_SYMBOL_GPL(qeth_prepare_control_data);
2083
2084 /**
2085  * qeth_send_control_data() -   send control command to the card
2086  * @card:                       qeth_card structure pointer
2087  * @len:                        size of the command buffer
2088  * @iob:                        qeth_cmd_buffer pointer
2089  * @reply_cb:                   callback function pointer
2090  * @cb_card:                    pointer to the qeth_card structure
2091  * @cb_reply:                   pointer to the qeth_reply structure
2092  * @cb_cmd:                     pointer to the original iob for non-IPA
2093  *                              commands, or to the qeth_ipa_cmd structure
2094  *                              for the IPA commands.
2095  * @reply_param:                private pointer passed to the callback
2096  *
2097  * Returns the value of the `return_code' field of the response
2098  * block returned from the hardware, or other error indication.
2099  * Value of zero indicates successful execution of the command.
2100  *
2101  * Callback function gets called one or more times, with cb_cmd
2102  * pointing to the response returned by the hardware. Callback
2103  * function must return non-zero if more reply blocks are expected,
2104  * and zero if the last or only reply block is received. Callback
2105  * function can get the value of the reply_param pointer from the
2106  * field 'param' of the structure qeth_reply.
2107  */
2108
2109 int qeth_send_control_data(struct qeth_card *card, int len,
2110                 struct qeth_cmd_buffer *iob,
2111                 int (*reply_cb)(struct qeth_card *cb_card,
2112                                 struct qeth_reply *cb_reply,
2113                                 unsigned long cb_cmd),
2114                 void *reply_param)
2115 {
2116         int rc;
2117         unsigned long flags;
2118         struct qeth_reply *reply = NULL;
2119         unsigned long timeout, event_timeout;
2120         struct qeth_ipa_cmd *cmd = NULL;
2121
2122         QETH_CARD_TEXT(card, 2, "sendctl");
2123
2124         if (card->read_or_write_problem) {
2125                 qeth_release_buffer(iob->channel, iob);
2126                 return -EIO;
2127         }
2128         reply = qeth_alloc_reply(card);
2129         if (!reply) {
2130                 return -ENOMEM;
2131         }
2132         reply->callback = reply_cb;
2133         reply->param = reply_param;
2134
2135         init_waitqueue_head(&reply->wait_q);
2136
2137         while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ;
2138
2139         if (IS_IPA(iob->data)) {
2140                 cmd = __ipa_cmd(iob);
2141                 cmd->hdr.seqno = card->seqno.ipa++;
2142                 reply->seqno = cmd->hdr.seqno;
2143                 event_timeout = QETH_IPA_TIMEOUT;
2144         } else {
2145                 reply->seqno = QETH_IDX_COMMAND_SEQNO;
2146                 event_timeout = QETH_TIMEOUT;
2147         }
2148         qeth_prepare_control_data(card, len, iob);
2149
2150         spin_lock_irqsave(&card->lock, flags);
2151         list_add_tail(&reply->list, &card->cmd_waiter_list);
2152         spin_unlock_irqrestore(&card->lock, flags);
2153
2154         timeout = jiffies + event_timeout;
2155
2156         QETH_CARD_TEXT(card, 6, "noirqpnd");
2157         spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags);
2158         rc = ccw_device_start(card->write.ccwdev, &card->write.ccw,
2159                               (addr_t) iob, 0, 0);
2160         spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags);
2161         if (rc) {
2162                 QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: "
2163                         "ccw_device_start rc = %i\n",
2164                         dev_name(&card->write.ccwdev->dev), rc);
2165                 QETH_CARD_TEXT_(card, 2, " err%d", rc);
2166                 spin_lock_irqsave(&card->lock, flags);
2167                 list_del_init(&reply->list);
2168                 qeth_put_reply(reply);
2169                 spin_unlock_irqrestore(&card->lock, flags);
2170                 qeth_release_buffer(iob->channel, iob);
2171                 atomic_set(&card->write.irq_pending, 0);
2172                 wake_up(&card->wait_q);
2173                 return rc;
2174         }
2175
2176         /* we have only one long running ipassist, since we can ensure
2177            process context of this command we can sleep */
2178         if (cmd && cmd->hdr.command == IPA_CMD_SETIP &&
2179             cmd->hdr.prot_version == QETH_PROT_IPV4) {
2180                 if (!wait_event_timeout(reply->wait_q,
2181                     atomic_read(&reply->received), event_timeout))
2182                         goto time_err;
2183         } else {
2184                 while (!atomic_read(&reply->received)) {
2185                         if (time_after(jiffies, timeout))
2186                                 goto time_err;
2187                         cpu_relax();
2188                 }
2189         }
2190
2191         if (reply->rc == -EIO)
2192                 goto error;
2193         rc = reply->rc;
2194         qeth_put_reply(reply);
2195         return rc;
2196
2197 time_err:
2198         reply->rc = -ETIME;
2199         spin_lock_irqsave(&reply->card->lock, flags);
2200         list_del_init(&reply->list);
2201         spin_unlock_irqrestore(&reply->card->lock, flags);
2202         atomic_inc(&reply->received);
2203 error:
2204         atomic_set(&card->write.irq_pending, 0);
2205         qeth_release_buffer(iob->channel, iob);
2206         rc = reply->rc;
2207         qeth_put_reply(reply);
2208         return rc;
2209 }
2210 EXPORT_SYMBOL_GPL(qeth_send_control_data);
2211
2212 static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2213                 unsigned long data)
2214 {
2215         struct qeth_cmd_buffer *iob;
2216
2217         QETH_DBF_TEXT(SETUP, 2, "cmenblcb");
2218
2219         iob = (struct qeth_cmd_buffer *) data;
2220         memcpy(&card->token.cm_filter_r,
2221                QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data),
2222                QETH_MPC_TOKEN_LENGTH);
2223         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2224         return 0;
2225 }
2226
2227 static int qeth_cm_enable(struct qeth_card *card)
2228 {
2229         int rc;
2230         struct qeth_cmd_buffer *iob;
2231
2232         QETH_DBF_TEXT(SETUP, 2, "cmenable");
2233
2234         iob = qeth_wait_for_buffer(&card->write);
2235         memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE);
2236         memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data),
2237                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2238         memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data),
2239                &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH);
2240
2241         rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob,
2242                                     qeth_cm_enable_cb, NULL);
2243         return rc;
2244 }
2245
2246 static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2247                 unsigned long data)
2248 {
2249
2250         struct qeth_cmd_buffer *iob;
2251
2252         QETH_DBF_TEXT(SETUP, 2, "cmsetpcb");
2253
2254         iob = (struct qeth_cmd_buffer *) data;
2255         memcpy(&card->token.cm_connection_r,
2256                QETH_CM_SETUP_RESP_DEST_ADDR(iob->data),
2257                QETH_MPC_TOKEN_LENGTH);
2258         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2259         return 0;
2260 }
2261
2262 static int qeth_cm_setup(struct qeth_card *card)
2263 {
2264         int rc;
2265         struct qeth_cmd_buffer *iob;
2266
2267         QETH_DBF_TEXT(SETUP, 2, "cmsetup");
2268
2269         iob = qeth_wait_for_buffer(&card->write);
2270         memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE);
2271         memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data),
2272                &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH);
2273         memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data),
2274                &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH);
2275         memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data),
2276                &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH);
2277         rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob,
2278                                     qeth_cm_setup_cb, NULL);
2279         return rc;
2280
2281 }
2282
2283 static int qeth_get_initial_mtu_for_card(struct qeth_card *card)
2284 {
2285         switch (card->info.type) {
2286         case QETH_CARD_TYPE_IQD:
2287                 return card->info.max_mtu;
2288         case QETH_CARD_TYPE_OSD:
2289         case QETH_CARD_TYPE_OSX:
2290                 if (!card->options.layer2)
2291                         return ETH_DATA_LEN - 8; /* L3: allow for LLC + SNAP */
2292                 /* fall through */
2293         default:
2294                 return ETH_DATA_LEN;
2295         }
2296 }
2297
2298 static int qeth_get_mtu_outof_framesize(int framesize)
2299 {
2300         switch (framesize) {
2301         case 0x4000:
2302                 return 8192;
2303         case 0x6000:
2304                 return 16384;
2305         case 0xa000:
2306                 return 32768;
2307         case 0xffff:
2308                 return 57344;
2309         default:
2310                 return 0;
2311         }
2312 }
2313
2314 static int qeth_mtu_is_valid(struct qeth_card *card, int mtu)
2315 {
2316         switch (card->info.type) {
2317         case QETH_CARD_TYPE_OSD:
2318         case QETH_CARD_TYPE_OSM:
2319         case QETH_CARD_TYPE_OSX:
2320         case QETH_CARD_TYPE_IQD:
2321                 return ((mtu >= 576) &&
2322                         (mtu <= card->info.max_mtu));
2323         case QETH_CARD_TYPE_OSN:
2324         default:
2325                 return 1;
2326         }
2327 }
2328
2329 static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply,
2330                 unsigned long data)
2331 {
2332
2333         __u16 mtu, framesize;
2334         __u16 len;
2335         __u8 link_type;
2336         struct qeth_cmd_buffer *iob;
2337
2338         QETH_DBF_TEXT(SETUP, 2, "ulpenacb");
2339
2340         iob = (struct qeth_cmd_buffer *) data;
2341         memcpy(&card->token.ulp_filter_r,
2342                QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data),
2343                QETH_MPC_TOKEN_LENGTH);
2344         if (card->info.type == QETH_CARD_TYPE_IQD) {
2345                 memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2);
2346                 mtu = qeth_get_mtu_outof_framesize(framesize);
2347                 if (!mtu) {
2348                         iob->rc = -EINVAL;
2349                         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2350                         return 0;
2351                 }
2352                 if (card->info.initial_mtu && (card->info.initial_mtu != mtu)) {
2353                         /* frame size has changed */
2354                         if (card->dev &&
2355                             ((card->dev->mtu == card->info.initial_mtu) ||
2356                              (card->dev->mtu > mtu)))
2357                                 card->dev->mtu = mtu;
2358                         qeth_free_qdio_buffers(card);
2359                 }
2360                 card->info.initial_mtu = mtu;
2361                 card->info.max_mtu = mtu;
2362                 card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE;
2363         } else {
2364                 card->info.max_mtu = *(__u16 *)QETH_ULP_ENABLE_RESP_MAX_MTU(
2365                         iob->data);
2366                 card->info.initial_mtu = min(card->info.max_mtu,
2367                                         qeth_get_initial_mtu_for_card(card));
2368                 card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT;
2369         }
2370
2371         memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2);
2372         if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) {
2373                 memcpy(&link_type,
2374                        QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1);
2375                 card->info.link_type = link_type;
2376         } else
2377                 card->info.link_type = 0;
2378         QETH_DBF_TEXT_(SETUP, 2, "link%d", card->info.link_type);
2379         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2380         return 0;
2381 }
2382
2383 static int qeth_ulp_enable(struct qeth_card *card)
2384 {
2385         int rc;
2386         char prot_type;
2387         struct qeth_cmd_buffer *iob;
2388
2389         /*FIXME: trace view callbacks*/
2390         QETH_DBF_TEXT(SETUP, 2, "ulpenabl");
2391
2392         iob = qeth_wait_for_buffer(&card->write);
2393         memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE);
2394
2395         *(QETH_ULP_ENABLE_LINKNUM(iob->data)) =
2396                 (__u8) card->info.portno;
2397         if (card->options.layer2)
2398                 if (card->info.type == QETH_CARD_TYPE_OSN)
2399                         prot_type = QETH_PROT_OSN2;
2400                 else
2401                         prot_type = QETH_PROT_LAYER2;
2402         else
2403                 prot_type = QETH_PROT_TCPIP;
2404
2405         memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1);
2406         memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data),
2407                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2408         memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data),
2409                &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH);
2410         rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob,
2411                                     qeth_ulp_enable_cb, NULL);
2412         return rc;
2413
2414 }
2415
2416 static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply,
2417                 unsigned long data)
2418 {
2419         struct qeth_cmd_buffer *iob;
2420
2421         QETH_DBF_TEXT(SETUP, 2, "ulpstpcb");
2422
2423         iob = (struct qeth_cmd_buffer *) data;
2424         memcpy(&card->token.ulp_connection_r,
2425                QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2426                QETH_MPC_TOKEN_LENGTH);
2427         if (!strncmp("00S", QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data),
2428                      3)) {
2429                 QETH_DBF_TEXT(SETUP, 2, "olmlimit");
2430                 dev_err(&card->gdev->dev, "A connection could not be "
2431                         "established because of an OLM limit\n");
2432                 iob->rc = -EMLINK;
2433         }
2434         QETH_DBF_TEXT_(SETUP, 2, "  rc%d", iob->rc);
2435         return 0;
2436 }
2437
2438 static int qeth_ulp_setup(struct qeth_card *card)
2439 {
2440         int rc;
2441         __u16 temp;
2442         struct qeth_cmd_buffer *iob;
2443         struct ccw_dev_id dev_id;
2444
2445         QETH_DBF_TEXT(SETUP, 2, "ulpsetup");
2446
2447         iob = qeth_wait_for_buffer(&card->write);
2448         memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE);
2449
2450         memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data),
2451                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2452         memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data),
2453                &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH);
2454         memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data),
2455                &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH);
2456
2457         ccw_device_get_id(CARD_DDEV(card), &dev_id);
2458         memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2);
2459         temp = (card->info.cula << 8) + card->info.unit_addr2;
2460         memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2);
2461         rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob,
2462                                     qeth_ulp_setup_cb, NULL);
2463         return rc;
2464 }
2465
2466 static int qeth_init_qdio_out_buf(struct qeth_qdio_out_q *q, int bidx)
2467 {
2468         int rc;
2469         struct qeth_qdio_out_buffer *newbuf;
2470
2471         rc = 0;
2472         newbuf = kmem_cache_zalloc(qeth_qdio_outbuf_cache, GFP_ATOMIC);
2473         if (!newbuf) {
2474                 rc = -ENOMEM;
2475                 goto out;
2476         }
2477         newbuf->buffer = q->qdio_bufs[bidx];
2478         skb_queue_head_init(&newbuf->skb_list);
2479         lockdep_set_class(&newbuf->skb_list.lock, &qdio_out_skb_queue_key);
2480         newbuf->q = q;
2481         newbuf->aob = NULL;
2482         newbuf->next_pending = q->bufs[bidx];
2483         atomic_set(&newbuf->state, QETH_QDIO_BUF_EMPTY);
2484         q->bufs[bidx] = newbuf;
2485         if (q->bufstates) {
2486                 q->bufstates[bidx].user = newbuf;
2487                 QETH_CARD_TEXT_(q->card, 2, "nbs%d", bidx);
2488                 QETH_CARD_TEXT_(q->card, 2, "%lx", (long) newbuf);
2489                 QETH_CARD_TEXT_(q->card, 2, "%lx",
2490                                 (long) newbuf->next_pending);
2491         }
2492 out:
2493         return rc;
2494 }
2495
2496 static void qeth_free_qdio_out_buf(struct qeth_qdio_out_q *q)
2497 {
2498         if (!q)
2499                 return;
2500
2501         qdio_free_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2502         kfree(q);
2503 }
2504
2505 static struct qeth_qdio_out_q *qeth_alloc_qdio_out_buf(void)
2506 {
2507         struct qeth_qdio_out_q *q = kzalloc(sizeof(*q), GFP_KERNEL);
2508
2509         if (!q)
2510                 return NULL;
2511
2512         if (qdio_alloc_buffers(q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q)) {
2513                 kfree(q);
2514                 return NULL;
2515         }
2516         return q;
2517 }
2518
2519 static int qeth_alloc_qdio_buffers(struct qeth_card *card)
2520 {
2521         int i, j;
2522
2523         QETH_DBF_TEXT(SETUP, 2, "allcqdbf");
2524
2525         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED,
2526                 QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED)
2527                 return 0;
2528
2529         QETH_DBF_TEXT(SETUP, 2, "inq");
2530         card->qdio.in_q = qeth_alloc_qdio_queue();
2531         if (!card->qdio.in_q)
2532                 goto out_nomem;
2533
2534         /* inbound buffer pool */
2535         if (qeth_alloc_buffer_pool(card))
2536                 goto out_freeinq;
2537
2538         /* outbound */
2539         card->qdio.out_qs =
2540                 kzalloc(card->qdio.no_out_queues *
2541                         sizeof(struct qeth_qdio_out_q *), GFP_KERNEL);
2542         if (!card->qdio.out_qs)
2543                 goto out_freepool;
2544         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2545                 card->qdio.out_qs[i] = qeth_alloc_qdio_out_buf();
2546                 if (!card->qdio.out_qs[i])
2547                         goto out_freeoutq;
2548                 QETH_DBF_TEXT_(SETUP, 2, "outq %i", i);
2549                 QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *));
2550                 card->qdio.out_qs[i]->queue_no = i;
2551                 /* give outbound qeth_qdio_buffers their qdio_buffers */
2552                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2553                         WARN_ON(card->qdio.out_qs[i]->bufs[j] != NULL);
2554                         if (qeth_init_qdio_out_buf(card->qdio.out_qs[i], j))
2555                                 goto out_freeoutqbufs;
2556                 }
2557         }
2558
2559         /* completion */
2560         if (qeth_alloc_cq(card))
2561                 goto out_freeoutq;
2562
2563         return 0;
2564
2565 out_freeoutqbufs:
2566         while (j > 0) {
2567                 --j;
2568                 kmem_cache_free(qeth_qdio_outbuf_cache,
2569                                 card->qdio.out_qs[i]->bufs[j]);
2570                 card->qdio.out_qs[i]->bufs[j] = NULL;
2571         }
2572 out_freeoutq:
2573         while (i > 0) {
2574                 qeth_free_qdio_out_buf(card->qdio.out_qs[--i]);
2575                 qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2576         }
2577         kfree(card->qdio.out_qs);
2578         card->qdio.out_qs = NULL;
2579 out_freepool:
2580         qeth_free_buffer_pool(card);
2581 out_freeinq:
2582         qeth_free_qdio_queue(card->qdio.in_q);
2583         card->qdio.in_q = NULL;
2584 out_nomem:
2585         atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED);
2586         return -ENOMEM;
2587 }
2588
2589 static void qeth_free_qdio_buffers(struct qeth_card *card)
2590 {
2591         int i, j;
2592
2593         if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) ==
2594                 QETH_QDIO_UNINITIALIZED)
2595                 return;
2596
2597         qeth_free_cq(card);
2598         cancel_delayed_work_sync(&card->buffer_reclaim_work);
2599         for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2600                 if (card->qdio.in_q->bufs[j].rx_skb)
2601                         dev_kfree_skb_any(card->qdio.in_q->bufs[j].rx_skb);
2602         }
2603         qeth_free_qdio_queue(card->qdio.in_q);
2604         card->qdio.in_q = NULL;
2605         /* inbound buffer pool */
2606         qeth_free_buffer_pool(card);
2607         /* free outbound qdio_qs */
2608         if (card->qdio.out_qs) {
2609                 for (i = 0; i < card->qdio.no_out_queues; ++i) {
2610                         qeth_clear_outq_buffers(card->qdio.out_qs[i], 1);
2611                         qeth_free_qdio_out_buf(card->qdio.out_qs[i]);
2612                 }
2613                 kfree(card->qdio.out_qs);
2614                 card->qdio.out_qs = NULL;
2615         }
2616 }
2617
2618 static void qeth_create_qib_param_field(struct qeth_card *card,
2619                 char *param_field)
2620 {
2621
2622         param_field[0] = _ascebc['P'];
2623         param_field[1] = _ascebc['C'];
2624         param_field[2] = _ascebc['I'];
2625         param_field[3] = _ascebc['T'];
2626         *((unsigned int *) (&param_field[4])) = QETH_PCI_THRESHOLD_A(card);
2627         *((unsigned int *) (&param_field[8])) = QETH_PCI_THRESHOLD_B(card);
2628         *((unsigned int *) (&param_field[12])) = QETH_PCI_TIMER_VALUE(card);
2629 }
2630
2631 static void qeth_create_qib_param_field_blkt(struct qeth_card *card,
2632                 char *param_field)
2633 {
2634         param_field[16] = _ascebc['B'];
2635         param_field[17] = _ascebc['L'];
2636         param_field[18] = _ascebc['K'];
2637         param_field[19] = _ascebc['T'];
2638         *((unsigned int *) (&param_field[20])) = card->info.blkt.time_total;
2639         *((unsigned int *) (&param_field[24])) = card->info.blkt.inter_packet;
2640         *((unsigned int *) (&param_field[28])) =
2641                 card->info.blkt.inter_packet_jumbo;
2642 }
2643
2644 static int qeth_qdio_activate(struct qeth_card *card)
2645 {
2646         QETH_DBF_TEXT(SETUP, 3, "qdioact");
2647         return qdio_activate(CARD_DDEV(card));
2648 }
2649
2650 static int qeth_dm_act(struct qeth_card *card)
2651 {
2652         int rc;
2653         struct qeth_cmd_buffer *iob;
2654
2655         QETH_DBF_TEXT(SETUP, 2, "dmact");
2656
2657         iob = qeth_wait_for_buffer(&card->write);
2658         memcpy(iob->data, DM_ACT, DM_ACT_SIZE);
2659
2660         memcpy(QETH_DM_ACT_DEST_ADDR(iob->data),
2661                &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH);
2662         memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data),
2663                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2664         rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL);
2665         return rc;
2666 }
2667
2668 static int qeth_mpc_initialize(struct qeth_card *card)
2669 {
2670         int rc;
2671
2672         QETH_DBF_TEXT(SETUP, 2, "mpcinit");
2673
2674         rc = qeth_issue_next_read(card);
2675         if (rc) {
2676                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2677                 return rc;
2678         }
2679         rc = qeth_cm_enable(card);
2680         if (rc) {
2681                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
2682                 goto out_qdio;
2683         }
2684         rc = qeth_cm_setup(card);
2685         if (rc) {
2686                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
2687                 goto out_qdio;
2688         }
2689         rc = qeth_ulp_enable(card);
2690         if (rc) {
2691                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
2692                 goto out_qdio;
2693         }
2694         rc = qeth_ulp_setup(card);
2695         if (rc) {
2696                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2697                 goto out_qdio;
2698         }
2699         rc = qeth_alloc_qdio_buffers(card);
2700         if (rc) {
2701                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
2702                 goto out_qdio;
2703         }
2704         rc = qeth_qdio_establish(card);
2705         if (rc) {
2706                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
2707                 qeth_free_qdio_buffers(card);
2708                 goto out_qdio;
2709         }
2710         rc = qeth_qdio_activate(card);
2711         if (rc) {
2712                 QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
2713                 goto out_qdio;
2714         }
2715         rc = qeth_dm_act(card);
2716         if (rc) {
2717                 QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
2718                 goto out_qdio;
2719         }
2720
2721         return 0;
2722 out_qdio:
2723         qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
2724         qdio_free(CARD_DDEV(card));
2725         return rc;
2726 }
2727
2728 void qeth_print_status_message(struct qeth_card *card)
2729 {
2730         switch (card->info.type) {
2731         case QETH_CARD_TYPE_OSD:
2732         case QETH_CARD_TYPE_OSM:
2733         case QETH_CARD_TYPE_OSX:
2734                 /* VM will use a non-zero first character
2735                  * to indicate a HiperSockets like reporting
2736                  * of the level OSA sets the first character to zero
2737                  * */
2738                 if (!card->info.mcl_level[0]) {
2739                         sprintf(card->info.mcl_level, "%02x%02x",
2740                                 card->info.mcl_level[2],
2741                                 card->info.mcl_level[3]);
2742                         break;
2743                 }
2744                 /* fallthrough */
2745         case QETH_CARD_TYPE_IQD:
2746                 if ((card->info.guestlan) ||
2747                     (card->info.mcl_level[0] & 0x80)) {
2748                         card->info.mcl_level[0] = (char) _ebcasc[(__u8)
2749                                 card->info.mcl_level[0]];
2750                         card->info.mcl_level[1] = (char) _ebcasc[(__u8)
2751                                 card->info.mcl_level[1]];
2752                         card->info.mcl_level[2] = (char) _ebcasc[(__u8)
2753                                 card->info.mcl_level[2]];
2754                         card->info.mcl_level[3] = (char) _ebcasc[(__u8)
2755                                 card->info.mcl_level[3]];
2756                         card->info.mcl_level[QETH_MCL_LENGTH] = 0;
2757                 }
2758                 break;
2759         default:
2760                 memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1);
2761         }
2762         dev_info(&card->gdev->dev,
2763                  "Device is a%s card%s%s%s\nwith link type %s.\n",
2764                  qeth_get_cardname(card),
2765                  (card->info.mcl_level[0]) ? " (level: " : "",
2766                  (card->info.mcl_level[0]) ? card->info.mcl_level : "",
2767                  (card->info.mcl_level[0]) ? ")" : "",
2768                  qeth_get_cardname_short(card));
2769 }
2770 EXPORT_SYMBOL_GPL(qeth_print_status_message);
2771
2772 static void qeth_initialize_working_pool_list(struct qeth_card *card)
2773 {
2774         struct qeth_buffer_pool_entry *entry;
2775
2776         QETH_CARD_TEXT(card, 5, "inwrklst");
2777
2778         list_for_each_entry(entry,
2779                             &card->qdio.init_pool.entry_list, init_list) {
2780                 qeth_put_buffer_pool_entry(card, entry);
2781         }
2782 }
2783
2784 static struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry(
2785                                         struct qeth_card *card)
2786 {
2787         struct list_head *plh;
2788         struct qeth_buffer_pool_entry *entry;
2789         int i, free;
2790         struct page *page;
2791
2792         if (list_empty(&card->qdio.in_buf_pool.entry_list))
2793                 return NULL;
2794
2795         list_for_each(plh, &card->qdio.in_buf_pool.entry_list) {
2796                 entry = list_entry(plh, struct qeth_buffer_pool_entry, list);
2797                 free = 1;
2798                 for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2799                         if (page_count(virt_to_page(entry->elements[i])) > 1) {
2800                                 free = 0;
2801                                 break;
2802                         }
2803                 }
2804                 if (free) {
2805                         list_del_init(&entry->list);
2806                         return entry;
2807                 }
2808         }
2809
2810         /* no free buffer in pool so take first one and swap pages */
2811         entry = list_entry(card->qdio.in_buf_pool.entry_list.next,
2812                         struct qeth_buffer_pool_entry, list);
2813         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2814                 if (page_count(virt_to_page(entry->elements[i])) > 1) {
2815                         page = alloc_page(GFP_ATOMIC);
2816                         if (!page) {
2817                                 return NULL;
2818                         } else {
2819                                 free_page((unsigned long)entry->elements[i]);
2820                                 entry->elements[i] = page_address(page);
2821                                 if (card->options.performance_stats)
2822                                         card->perf_stats.sg_alloc_page_rx++;
2823                         }
2824                 }
2825         }
2826         list_del_init(&entry->list);
2827         return entry;
2828 }
2829
2830 static int qeth_init_input_buffer(struct qeth_card *card,
2831                 struct qeth_qdio_buffer *buf)
2832 {
2833         struct qeth_buffer_pool_entry *pool_entry;
2834         int i;
2835
2836         if ((card->options.cq == QETH_CQ_ENABLED) && (!buf->rx_skb)) {
2837                 buf->rx_skb = netdev_alloc_skb(card->dev,
2838                                                QETH_RX_PULL_LEN + ETH_HLEN);
2839                 if (!buf->rx_skb)
2840                         return 1;
2841         }
2842
2843         pool_entry = qeth_find_free_buffer_pool_entry(card);
2844         if (!pool_entry)
2845                 return 1;
2846
2847         /*
2848          * since the buffer is accessed only from the input_tasklet
2849          * there shouldn't be a need to synchronize; also, since we use
2850          * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run  out off
2851          * buffers
2852          */
2853
2854         buf->pool_entry = pool_entry;
2855         for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) {
2856                 buf->buffer->element[i].length = PAGE_SIZE;
2857                 buf->buffer->element[i].addr =  pool_entry->elements[i];
2858                 if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1)
2859                         buf->buffer->element[i].eflags = SBAL_EFLAGS_LAST_ENTRY;
2860                 else
2861                         buf->buffer->element[i].eflags = 0;
2862                 buf->buffer->element[i].sflags = 0;
2863         }
2864         return 0;
2865 }
2866
2867 int qeth_init_qdio_queues(struct qeth_card *card)
2868 {
2869         int i, j;
2870         int rc;
2871
2872         QETH_DBF_TEXT(SETUP, 2, "initqdqs");
2873
2874         /* inbound queue */
2875         qdio_reset_buffers(card->qdio.in_q->qdio_bufs, QDIO_MAX_BUFFERS_PER_Q);
2876         memset(&card->rx, 0, sizeof(struct qeth_rx));
2877         qeth_initialize_working_pool_list(card);
2878         /*give only as many buffers to hardware as we have buffer pool entries*/
2879         for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i)
2880                 qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]);
2881         card->qdio.in_q->next_buf_to_init =
2882                 card->qdio.in_buf_pool.buf_count - 1;
2883         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0,
2884                      card->qdio.in_buf_pool.buf_count - 1);
2885         if (rc) {
2886                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
2887                 return rc;
2888         }
2889
2890         /* completion */
2891         rc = qeth_cq_init(card);
2892         if (rc) {
2893                 return rc;
2894         }
2895
2896         /* outbound queue */
2897         for (i = 0; i < card->qdio.no_out_queues; ++i) {
2898                 qdio_reset_buffers(card->qdio.out_qs[i]->qdio_bufs,
2899                                    QDIO_MAX_BUFFERS_PER_Q);
2900                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) {
2901                         qeth_clear_output_buffer(card->qdio.out_qs[i],
2902                                         card->qdio.out_qs[i]->bufs[j],
2903                                         QETH_QDIO_BUF_EMPTY);
2904                 }
2905                 card->qdio.out_qs[i]->card = card;
2906                 card->qdio.out_qs[i]->next_buf_to_fill = 0;
2907                 card->qdio.out_qs[i]->do_pack = 0;
2908                 atomic_set(&card->qdio.out_qs[i]->used_buffers, 0);
2909                 atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0);
2910                 atomic_set(&card->qdio.out_qs[i]->state,
2911                            QETH_OUT_Q_UNLOCKED);
2912         }
2913         return 0;
2914 }
2915 EXPORT_SYMBOL_GPL(qeth_init_qdio_queues);
2916
2917 static __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type)
2918 {
2919         switch (link_type) {
2920         case QETH_LINK_TYPE_HSTR:
2921                 return 2;
2922         default:
2923                 return 1;
2924         }
2925 }
2926
2927 static void qeth_fill_ipacmd_header(struct qeth_card *card,
2928                 struct qeth_ipa_cmd *cmd, __u8 command,
2929                 enum qeth_prot_versions prot)
2930 {
2931         memset(cmd, 0, sizeof(struct qeth_ipa_cmd));
2932         cmd->hdr.command = command;
2933         cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST;
2934         /* cmd->hdr.seqno is set by qeth_send_control_data() */
2935         cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type);
2936         cmd->hdr.rel_adapter_no = (__u8) card->info.portno;
2937         if (card->options.layer2)
2938                 cmd->hdr.prim_version_no = 2;
2939         else
2940                 cmd->hdr.prim_version_no = 1;
2941         cmd->hdr.param_count = 1;
2942         cmd->hdr.prot_version = prot;
2943         cmd->hdr.ipa_supported = 0;
2944         cmd->hdr.ipa_enabled = 0;
2945 }
2946
2947 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card,
2948                 enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot)
2949 {
2950         struct qeth_cmd_buffer *iob;
2951
2952         iob = qeth_get_buffer(&card->write);
2953         if (iob) {
2954                 qeth_fill_ipacmd_header(card, __ipa_cmd(iob), ipacmd, prot);
2955         } else {
2956                 dev_warn(&card->gdev->dev,
2957                          "The qeth driver ran out of channel command buffers\n");
2958                 QETH_DBF_MESSAGE(1, "%s The qeth driver ran out of channel command buffers",
2959                                  dev_name(&card->gdev->dev));
2960         }
2961
2962         return iob;
2963 }
2964 EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer);
2965
2966 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2967                 char prot_type)
2968 {
2969         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
2970         memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1);
2971         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
2972                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
2973 }
2974 EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd);
2975
2976 /**
2977  * qeth_send_ipa_cmd() - send an IPA command
2978  *
2979  * See qeth_send_control_data() for explanation of the arguments.
2980  */
2981
2982 int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
2983                 int (*reply_cb)(struct qeth_card *, struct qeth_reply*,
2984                         unsigned long),
2985                 void *reply_param)
2986 {
2987         int rc;
2988         char prot_type;
2989
2990         QETH_CARD_TEXT(card, 4, "sendipa");
2991
2992         if (card->options.layer2)
2993                 if (card->info.type == QETH_CARD_TYPE_OSN)
2994                         prot_type = QETH_PROT_OSN2;
2995                 else
2996                         prot_type = QETH_PROT_LAYER2;
2997         else
2998                 prot_type = QETH_PROT_TCPIP;
2999         qeth_prepare_ipa_cmd(card, iob, prot_type);
3000         rc = qeth_send_control_data(card, IPA_CMD_LENGTH,
3001                                                 iob, reply_cb, reply_param);
3002         if (rc == -ETIME) {
3003                 qeth_clear_ipacmd_list(card);
3004                 qeth_schedule_recovery(card);
3005         }
3006         return rc;
3007 }
3008 EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd);
3009
3010 static int qeth_send_startlan(struct qeth_card *card)
3011 {
3012         int rc;
3013         struct qeth_cmd_buffer *iob;
3014
3015         QETH_DBF_TEXT(SETUP, 2, "strtlan");
3016
3017         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_STARTLAN, 0);
3018         if (!iob)
3019                 return -ENOMEM;
3020         rc = qeth_send_ipa_cmd(card, iob, NULL, NULL);
3021         return rc;
3022 }
3023
3024 static int qeth_setadpparms_inspect_rc(struct qeth_ipa_cmd *cmd)
3025 {
3026         if (!cmd->hdr.return_code)
3027                 cmd->hdr.return_code =
3028                         cmd->data.setadapterparms.hdr.return_code;
3029         return cmd->hdr.return_code;
3030 }
3031
3032 static int qeth_query_setadapterparms_cb(struct qeth_card *card,
3033                 struct qeth_reply *reply, unsigned long data)
3034 {
3035         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3036
3037         QETH_CARD_TEXT(card, 3, "quyadpcb");
3038         if (qeth_setadpparms_inspect_rc(cmd))
3039                 return 0;
3040
3041         if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) {
3042                 card->info.link_type =
3043                       cmd->data.setadapterparms.data.query_cmds_supp.lan_type;
3044                 QETH_DBF_TEXT_(SETUP, 2, "lnk %d", card->info.link_type);
3045         }
3046         card->options.adp.supported_funcs =
3047                 cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds;
3048         return 0;
3049 }
3050
3051 static struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card,
3052                 __u32 command, __u32 cmdlen)
3053 {
3054         struct qeth_cmd_buffer *iob;
3055         struct qeth_ipa_cmd *cmd;
3056
3057         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS,
3058                                      QETH_PROT_IPV4);
3059         if (iob) {
3060                 cmd = __ipa_cmd(iob);
3061                 cmd->data.setadapterparms.hdr.cmdlength = cmdlen;
3062                 cmd->data.setadapterparms.hdr.command_code = command;
3063                 cmd->data.setadapterparms.hdr.used_total = 1;
3064                 cmd->data.setadapterparms.hdr.seq_no = 1;
3065         }
3066
3067         return iob;
3068 }
3069
3070 int qeth_query_setadapterparms(struct qeth_card *card)
3071 {
3072         int rc;
3073         struct qeth_cmd_buffer *iob;
3074
3075         QETH_CARD_TEXT(card, 3, "queryadp");
3076         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED,
3077                                    sizeof(struct qeth_ipacmd_setadpparms));
3078         if (!iob)
3079                 return -ENOMEM;
3080         rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL);
3081         return rc;
3082 }
3083 EXPORT_SYMBOL_GPL(qeth_query_setadapterparms);
3084
3085 static int qeth_query_ipassists_cb(struct qeth_card *card,
3086                 struct qeth_reply *reply, unsigned long data)
3087 {
3088         struct qeth_ipa_cmd *cmd;
3089
3090         QETH_DBF_TEXT(SETUP, 2, "qipasscb");
3091
3092         cmd = (struct qeth_ipa_cmd *) data;
3093
3094         switch (cmd->hdr.return_code) {
3095         case IPA_RC_NOTSUPP:
3096         case IPA_RC_L2_UNSUPPORTED_CMD:
3097                 QETH_DBF_TEXT(SETUP, 2, "ipaunsup");
3098                 card->options.ipa4.supported_funcs |= IPA_SETADAPTERPARMS;
3099                 card->options.ipa6.supported_funcs |= IPA_SETADAPTERPARMS;
3100                 return -0;
3101         default:
3102                 if (cmd->hdr.return_code) {
3103                         QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Unhandled "
3104                                                 "rc=%d\n",
3105                                                 dev_name(&card->gdev->dev),
3106                                                 cmd->hdr.return_code);
3107                         return 0;
3108                 }
3109         }
3110
3111         if (cmd->hdr.prot_version == QETH_PROT_IPV4) {
3112                 card->options.ipa4.supported_funcs = cmd->hdr.ipa_supported;
3113                 card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
3114         } else if (cmd->hdr.prot_version == QETH_PROT_IPV6) {
3115                 card->options.ipa6.supported_funcs = cmd->hdr.ipa_supported;
3116                 card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
3117         } else
3118                 QETH_DBF_MESSAGE(1, "%s IPA_CMD_QIPASSIST: Flawed LIC detected"
3119                                         "\n", dev_name(&card->gdev->dev));
3120         return 0;
3121 }
3122
3123 int qeth_query_ipassists(struct qeth_card *card, enum qeth_prot_versions prot)
3124 {
3125         int rc;
3126         struct qeth_cmd_buffer *iob;
3127
3128         QETH_DBF_TEXT_(SETUP, 2, "qipassi%i", prot);
3129         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_QIPASSIST, prot);
3130         if (!iob)
3131                 return -ENOMEM;
3132         rc = qeth_send_ipa_cmd(card, iob, qeth_query_ipassists_cb, NULL);
3133         return rc;
3134 }
3135 EXPORT_SYMBOL_GPL(qeth_query_ipassists);
3136
3137 static int qeth_query_switch_attributes_cb(struct qeth_card *card,
3138                                 struct qeth_reply *reply, unsigned long data)
3139 {
3140         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
3141         struct qeth_query_switch_attributes *attrs;
3142         struct qeth_switch_info *sw_info;
3143
3144         QETH_CARD_TEXT(card, 2, "qswiatcb");
3145         if (qeth_setadpparms_inspect_rc(cmd))
3146                 return 0;
3147
3148         sw_info = (struct qeth_switch_info *)reply->param;
3149         attrs = &cmd->data.setadapterparms.data.query_switch_attributes;
3150         sw_info->capabilities = attrs->capabilities;
3151         sw_info->settings = attrs->settings;
3152         QETH_CARD_TEXT_(card, 2, "%04x%04x", sw_info->capabilities,
3153                         sw_info->settings);
3154         return 0;
3155 }
3156
3157 int qeth_query_switch_attributes(struct qeth_card *card,
3158                                  struct qeth_switch_info *sw_info)
3159 {
3160         struct qeth_cmd_buffer *iob;
3161
3162         QETH_CARD_TEXT(card, 2, "qswiattr");
3163         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES))
3164                 return -EOPNOTSUPP;
3165         if (!netif_carrier_ok(card->dev))
3166                 return -ENOMEDIUM;
3167         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_SWITCH_ATTRIBUTES,
3168                                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
3169         if (!iob)
3170                 return -ENOMEM;
3171         return qeth_send_ipa_cmd(card, iob,
3172                                 qeth_query_switch_attributes_cb, sw_info);
3173 }
3174 EXPORT_SYMBOL_GPL(qeth_query_switch_attributes);
3175
3176 static int qeth_query_setdiagass_cb(struct qeth_card *card,
3177                 struct qeth_reply *reply, unsigned long data)
3178 {
3179         struct qeth_ipa_cmd *cmd;
3180         __u16 rc;
3181
3182         cmd = (struct qeth_ipa_cmd *)data;
3183         rc = cmd->hdr.return_code;
3184         if (rc)
3185                 QETH_CARD_TEXT_(card, 2, "diagq:%x", rc);
3186         else
3187                 card->info.diagass_support = cmd->data.diagass.ext;
3188         return 0;
3189 }
3190
3191 static int qeth_query_setdiagass(struct qeth_card *card)
3192 {
3193         struct qeth_cmd_buffer *iob;
3194         struct qeth_ipa_cmd    *cmd;
3195
3196         QETH_DBF_TEXT(SETUP, 2, "qdiagass");
3197         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3198         if (!iob)
3199                 return -ENOMEM;
3200         cmd = __ipa_cmd(iob);
3201         cmd->data.diagass.subcmd_len = 16;
3202         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_QUERY;
3203         return qeth_send_ipa_cmd(card, iob, qeth_query_setdiagass_cb, NULL);
3204 }
3205
3206 static void qeth_get_trap_id(struct qeth_card *card, struct qeth_trap_id *tid)
3207 {
3208         unsigned long info = get_zeroed_page(GFP_KERNEL);
3209         struct sysinfo_2_2_2 *info222 = (struct sysinfo_2_2_2 *)info;
3210         struct sysinfo_3_2_2 *info322 = (struct sysinfo_3_2_2 *)info;
3211         struct ccw_dev_id ccwid;
3212         int level;
3213
3214         tid->chpid = card->info.chpid;
3215         ccw_device_get_id(CARD_RDEV(card), &ccwid);
3216         tid->ssid = ccwid.ssid;
3217         tid->devno = ccwid.devno;
3218         if (!info)
3219                 return;
3220         level = stsi(NULL, 0, 0, 0);
3221         if ((level >= 2) && (stsi(info222, 2, 2, 2) == 0))
3222                 tid->lparnr = info222->lpar_number;
3223         if ((level >= 3) && (stsi(info322, 3, 2, 2) == 0)) {
3224                 EBCASC(info322->vm[0].name, sizeof(info322->vm[0].name));
3225                 memcpy(tid->vmname, info322->vm[0].name, sizeof(tid->vmname));
3226         }
3227         free_page(info);
3228         return;
3229 }
3230
3231 static int qeth_hw_trap_cb(struct qeth_card *card,
3232                 struct qeth_reply *reply, unsigned long data)
3233 {
3234         struct qeth_ipa_cmd *cmd;
3235         __u16 rc;
3236
3237         cmd = (struct qeth_ipa_cmd *)data;
3238         rc = cmd->hdr.return_code;
3239         if (rc)
3240                 QETH_CARD_TEXT_(card, 2, "trapc:%x", rc);
3241         return 0;
3242 }
3243
3244 int qeth_hw_trap(struct qeth_card *card, enum qeth_diags_trap_action action)
3245 {
3246         struct qeth_cmd_buffer *iob;
3247         struct qeth_ipa_cmd *cmd;
3248
3249         QETH_DBF_TEXT(SETUP, 2, "diagtrap");
3250         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SET_DIAG_ASS, 0);
3251         if (!iob)
3252                 return -ENOMEM;
3253         cmd = __ipa_cmd(iob);
3254         cmd->data.diagass.subcmd_len = 80;
3255         cmd->data.diagass.subcmd = QETH_DIAGS_CMD_TRAP;
3256         cmd->data.diagass.type = 1;
3257         cmd->data.diagass.action = action;
3258         switch (action) {
3259         case QETH_DIAGS_TRAP_ARM:
3260                 cmd->data.diagass.options = 0x0003;
3261                 cmd->data.diagass.ext = 0x00010000 +
3262                         sizeof(struct qeth_trap_id);
3263                 qeth_get_trap_id(card,
3264                         (struct qeth_trap_id *)cmd->data.diagass.cdata);
3265                 break;
3266         case QETH_DIAGS_TRAP_DISARM:
3267                 cmd->data.diagass.options = 0x0001;
3268                 break;
3269         case QETH_DIAGS_TRAP_CAPTURE:
3270                 break;
3271         }
3272         return qeth_send_ipa_cmd(card, iob, qeth_hw_trap_cb, NULL);
3273 }
3274 EXPORT_SYMBOL_GPL(qeth_hw_trap);
3275
3276 static int qeth_check_qdio_errors(struct qeth_card *card,
3277                                   struct qdio_buffer *buf,
3278                                   unsigned int qdio_error,
3279                                   const char *dbftext)
3280 {
3281         if (qdio_error) {
3282                 QETH_CARD_TEXT(card, 2, dbftext);
3283                 QETH_CARD_TEXT_(card, 2, " F15=%02X",
3284                                buf->element[15].sflags);
3285                 QETH_CARD_TEXT_(card, 2, " F14=%02X",
3286                                buf->element[14].sflags);
3287                 QETH_CARD_TEXT_(card, 2, " qerr=%X", qdio_error);
3288                 if ((buf->element[15].sflags) == 0x12) {
3289                         card->stats.rx_dropped++;
3290                         return 0;
3291                 } else
3292                         return 1;
3293         }
3294         return 0;
3295 }
3296
3297 static void qeth_queue_input_buffer(struct qeth_card *card, int index)
3298 {
3299         struct qeth_qdio_q *queue = card->qdio.in_q;
3300         struct list_head *lh;
3301         int count;
3302         int i;
3303         int rc;
3304         int newcount = 0;
3305
3306         count = (index < queue->next_buf_to_init)?
3307                 card->qdio.in_buf_pool.buf_count -
3308                 (queue->next_buf_to_init - index) :
3309                 card->qdio.in_buf_pool.buf_count -
3310                 (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index);
3311         /* only requeue at a certain threshold to avoid SIGAs */
3312         if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) {
3313                 for (i = queue->next_buf_to_init;
3314                      i < queue->next_buf_to_init + count; ++i) {
3315                         if (qeth_init_input_buffer(card,
3316                                 &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) {
3317                                 break;
3318                         } else {
3319                                 newcount++;
3320                         }
3321                 }
3322
3323                 if (newcount < count) {
3324                         /* we are in memory shortage so we switch back to
3325                            traditional skb allocation and drop packages */
3326                         atomic_set(&card->force_alloc_skb, 3);
3327                         count = newcount;
3328                 } else {
3329                         atomic_add_unless(&card->force_alloc_skb, -1, 0);
3330                 }
3331
3332                 if (!count) {
3333                         i = 0;
3334                         list_for_each(lh, &card->qdio.in_buf_pool.entry_list)
3335                                 i++;
3336                         if (i == card->qdio.in_buf_pool.buf_count) {
3337                                 QETH_CARD_TEXT(card, 2, "qsarbw");
3338                                 card->reclaim_index = index;
3339                                 schedule_delayed_work(
3340                                         &card->buffer_reclaim_work,
3341                                         QETH_RECLAIM_WORK_TIME);
3342                         }
3343                         return;
3344                 }
3345
3346                 /*
3347                  * according to old code it should be avoided to requeue all
3348                  * 128 buffers in order to benefit from PCI avoidance.
3349                  * this function keeps at least one buffer (the buffer at
3350                  * 'index') un-requeued -> this buffer is the first buffer that
3351                  * will be requeued the next time
3352                  */
3353                 if (card->options.performance_stats) {
3354                         card->perf_stats.inbound_do_qdio_cnt++;
3355                         card->perf_stats.inbound_do_qdio_start_time =
3356                                 qeth_get_micros();
3357                 }
3358                 rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0,
3359                              queue->next_buf_to_init, count);
3360                 if (card->options.performance_stats)
3361                         card->perf_stats.inbound_do_qdio_time +=
3362                                 qeth_get_micros() -
3363                                 card->perf_stats.inbound_do_qdio_start_time;
3364                 if (rc) {
3365                         QETH_CARD_TEXT(card, 2, "qinberr");
3366                 }
3367                 queue->next_buf_to_init = (queue->next_buf_to_init + count) %
3368                                           QDIO_MAX_BUFFERS_PER_Q;
3369         }
3370 }
3371
3372 static void qeth_buffer_reclaim_work(struct work_struct *work)
3373 {
3374         struct qeth_card *card = container_of(work, struct qeth_card,
3375                 buffer_reclaim_work.work);
3376
3377         QETH_CARD_TEXT_(card, 2, "brw:%x", card->reclaim_index);
3378         qeth_queue_input_buffer(card, card->reclaim_index);
3379 }
3380
3381 static void qeth_handle_send_error(struct qeth_card *card,
3382                 struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err)
3383 {
3384         int sbalf15 = buffer->buffer->element[15].sflags;
3385
3386         QETH_CARD_TEXT(card, 6, "hdsnderr");
3387         if (card->info.type == QETH_CARD_TYPE_IQD) {
3388                 if (sbalf15 == 0) {
3389                         qdio_err = 0;
3390                 } else {
3391                         qdio_err = 1;
3392                 }
3393         }
3394         qeth_check_qdio_errors(card, buffer->buffer, qdio_err, "qouterr");
3395
3396         if (!qdio_err)
3397                 return;
3398
3399         if ((sbalf15 >= 15) && (sbalf15 <= 31))
3400                 return;
3401
3402         QETH_CARD_TEXT(card, 1, "lnkfail");
3403         QETH_CARD_TEXT_(card, 1, "%04x %02x",
3404                        (u16)qdio_err, (u8)sbalf15);
3405 }
3406
3407 /**
3408  * qeth_prep_flush_pack_buffer - Prepares flushing of a packing buffer.
3409  * @queue: queue to check for packing buffer
3410  *
3411  * Returns number of buffers that were prepared for flush.
3412  */
3413 static int qeth_prep_flush_pack_buffer(struct qeth_qdio_out_q *queue)
3414 {
3415         struct qeth_qdio_out_buffer *buffer;
3416
3417         buffer = queue->bufs[queue->next_buf_to_fill];
3418         if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) &&
3419             (buffer->next_element_to_fill > 0)) {
3420                 /* it's a packing buffer */
3421                 atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
3422                 queue->next_buf_to_fill =
3423                         (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q;
3424                 return 1;
3425         }
3426         return 0;
3427 }
3428
3429 /*
3430  * Switched to packing state if the number of used buffers on a queue
3431  * reaches a certain limit.
3432  */
3433 static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue)
3434 {
3435         if (!queue->do_pack) {
3436                 if (atomic_read(&queue->used_buffers)
3437                     >= QETH_HIGH_WATERMARK_PACK){
3438                         /* switch non-PACKING -> PACKING */
3439                         QETH_CARD_TEXT(queue->card, 6, "np->pack");
3440                         if (queue->card->options.performance_stats)
3441                                 queue->card->perf_stats.sc_dp_p++;
3442                         queue->do_pack = 1;
3443                 }
3444         }
3445 }
3446
3447 /*
3448  * Switches from packing to non-packing mode. If there is a packing
3449  * buffer on the queue this buffer will be prepared to be flushed.
3450  * In that case 1 is returned to inform the caller. If no buffer
3451  * has to be flushed, zero is returned.
3452  */
3453 static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue)
3454 {
3455         if (queue->do_pack) {
3456                 if (atomic_read(&queue->used_buffers)
3457                     <= QETH_LOW_WATERMARK_PACK) {
3458                         /* switch PACKING -> non-PACKING */
3459                         QETH_CARD_TEXT(queue->card, 6, "pack->np");
3460                         if (queue->card->options.performance_stats)
3461                                 queue->card->perf_stats.sc_p_dp++;
3462                         queue->do_pack = 0;
3463                         return qeth_prep_flush_pack_buffer(queue);
3464                 }
3465         }
3466         return 0;
3467 }
3468
3469 static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index,
3470                                int count)
3471 {
3472         struct qeth_qdio_out_buffer *buf;
3473         int rc;
3474         int i;
3475         unsigned int qdio_flags;
3476
3477         for (i = index; i < index + count; ++i) {
3478                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3479                 buf = queue->bufs[bidx];
3480                 buf->buffer->element[buf->next_element_to_fill - 1].eflags |=
3481                                 SBAL_EFLAGS_LAST_ENTRY;
3482
3483                 if (queue->bufstates)
3484                         queue->bufstates[bidx].user = buf;
3485
3486                 if (queue->card->info.type == QETH_CARD_TYPE_IQD)
3487                         continue;
3488
3489                 if (!queue->do_pack) {
3490                         if ((atomic_read(&queue->used_buffers) >=
3491                                 (QETH_HIGH_WATERMARK_PACK -
3492                                  QETH_WATERMARK_PACK_FUZZ)) &&
3493                             !atomic_read(&queue->set_pci_flags_count)) {
3494                                 /* it's likely that we'll go to packing
3495                                  * mode soon */
3496                                 atomic_inc(&queue->set_pci_flags_count);
3497                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3498                         }
3499                 } else {
3500                         if (!atomic_read(&queue->set_pci_flags_count)) {
3501                                 /*
3502                                  * there's no outstanding PCI any more, so we
3503                                  * have to request a PCI to be sure the the PCI
3504                                  * will wake at some time in the future then we
3505                                  * can flush packed buffers that might still be
3506                                  * hanging around, which can happen if no
3507                                  * further send was requested by the stack
3508                                  */
3509                                 atomic_inc(&queue->set_pci_flags_count);
3510                                 buf->buffer->element[0].sflags |= SBAL_SFLAGS0_PCI_REQ;
3511                         }
3512                 }
3513         }
3514
3515         netif_trans_update(queue->card->dev);
3516         if (queue->card->options.performance_stats) {
3517                 queue->card->perf_stats.outbound_do_qdio_cnt++;
3518                 queue->card->perf_stats.outbound_do_qdio_start_time =
3519                         qeth_get_micros();
3520         }
3521         qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
3522         if (atomic_read(&queue->set_pci_flags_count))
3523                 qdio_flags |= QDIO_FLAG_PCI_OUT;
3524         rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags,
3525                      queue->queue_no, index, count);
3526         if (queue->card->options.performance_stats)
3527                 queue->card->perf_stats.outbound_do_qdio_time +=
3528                         qeth_get_micros() -
3529                         queue->card->perf_stats.outbound_do_qdio_start_time;
3530         atomic_add(count, &queue->used_buffers);
3531         if (rc) {
3532                 queue->card->stats.tx_errors += count;
3533                 /* ignore temporary SIGA errors without busy condition */
3534                 if (rc == -ENOBUFS)
3535                         return;
3536                 QETH_CARD_TEXT(queue->card, 2, "flushbuf");
3537                 QETH_CARD_TEXT_(queue->card, 2, " q%d", queue->queue_no);
3538                 QETH_CARD_TEXT_(queue->card, 2, " idx%d", index);
3539                 QETH_CARD_TEXT_(queue->card, 2, " c%d", count);
3540                 QETH_CARD_TEXT_(queue->card, 2, " err%d", rc);
3541
3542                 /* this must not happen under normal circumstances. if it
3543                  * happens something is really wrong -> recover */
3544                 qeth_schedule_recovery(queue->card);
3545                 return;
3546         }
3547         if (queue->card->options.performance_stats)
3548                 queue->card->perf_stats.bufs_sent += count;
3549 }
3550
3551 static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue)
3552 {
3553         int index;
3554         int flush_cnt = 0;
3555         int q_was_packing = 0;
3556
3557         /*
3558          * check if weed have to switch to non-packing mode or if
3559          * we have to get a pci flag out on the queue
3560          */
3561         if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) ||
3562             !atomic_read(&queue->set_pci_flags_count)) {
3563                 if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) ==
3564                                 QETH_OUT_Q_UNLOCKED) {
3565                         /*
3566                          * If we get in here, there was no action in
3567                          * do_send_packet. So, we check if there is a
3568                          * packing buffer to be flushed here.
3569                          */
3570                         netif_stop_queue(queue->card->dev);
3571                         index = queue->next_buf_to_fill;
3572                         q_was_packing = queue->do_pack;
3573                         /* queue->do_pack may change */
3574                         barrier();
3575                         flush_cnt += qeth_switch_to_nonpacking_if_needed(queue);
3576                         if (!flush_cnt &&
3577                             !atomic_read(&queue->set_pci_flags_count))
3578                                 flush_cnt += qeth_prep_flush_pack_buffer(queue);
3579                         if (queue->card->options.performance_stats &&
3580                             q_was_packing)
3581                                 queue->card->perf_stats.bufs_sent_pack +=
3582                                         flush_cnt;
3583                         if (flush_cnt)
3584                                 qeth_flush_buffers(queue, index, flush_cnt);
3585                         atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
3586                 }
3587         }
3588 }
3589
3590 void qeth_qdio_start_poll(struct ccw_device *ccwdev, int queue,
3591                 unsigned long card_ptr)
3592 {
3593         struct qeth_card *card = (struct qeth_card *)card_ptr;
3594
3595         if (card->dev && (card->dev->flags & IFF_UP))
3596                 napi_schedule(&card->napi);
3597 }
3598 EXPORT_SYMBOL_GPL(qeth_qdio_start_poll);
3599
3600 int qeth_configure_cq(struct qeth_card *card, enum qeth_cq cq)
3601 {
3602         int rc;
3603
3604         if (card->options.cq ==  QETH_CQ_NOTAVAILABLE) {
3605                 rc = -1;
3606                 goto out;
3607         } else {
3608                 if (card->options.cq == cq) {
3609                         rc = 0;
3610                         goto out;
3611                 }
3612
3613                 if (card->state != CARD_STATE_DOWN &&
3614                     card->state != CARD_STATE_RECOVER) {
3615                         rc = -1;
3616                         goto out;
3617                 }
3618
3619                 qeth_free_qdio_buffers(card);
3620                 card->options.cq = cq;
3621                 rc = 0;
3622         }
3623 out:
3624         return rc;
3625
3626 }
3627 EXPORT_SYMBOL_GPL(qeth_configure_cq);
3628
3629
3630 static void qeth_qdio_cq_handler(struct qeth_card *card,
3631                 unsigned int qdio_err,
3632                 unsigned int queue, int first_element, int count) {
3633         struct qeth_qdio_q *cq = card->qdio.c_q;
3634         int i;
3635         int rc;
3636
3637         if (!qeth_is_cq(card, queue))
3638                 goto out;
3639
3640         QETH_CARD_TEXT_(card, 5, "qcqhe%d", first_element);
3641         QETH_CARD_TEXT_(card, 5, "qcqhc%d", count);
3642         QETH_CARD_TEXT_(card, 5, "qcqherr%d", qdio_err);
3643
3644         if (qdio_err) {
3645                 netif_stop_queue(card->dev);
3646                 qeth_schedule_recovery(card);
3647                 goto out;
3648         }
3649
3650         if (card->options.performance_stats) {
3651                 card->perf_stats.cq_cnt++;
3652                 card->perf_stats.cq_start_time = qeth_get_micros();
3653         }
3654
3655         for (i = first_element; i < first_element + count; ++i) {
3656                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3657                 struct qdio_buffer *buffer = cq->qdio_bufs[bidx];
3658                 int e;
3659
3660                 e = 0;
3661                 while ((e < QDIO_MAX_ELEMENTS_PER_BUFFER) &&
3662                        buffer->element[e].addr) {
3663                         unsigned long phys_aob_addr;
3664
3665                         phys_aob_addr = (unsigned long) buffer->element[e].addr;
3666                         qeth_qdio_handle_aob(card, phys_aob_addr);
3667                         buffer->element[e].addr = NULL;
3668                         buffer->element[e].eflags = 0;
3669                         buffer->element[e].sflags = 0;
3670                         buffer->element[e].length = 0;
3671
3672                         ++e;
3673                 }
3674
3675                 buffer->element[15].eflags = 0;
3676                 buffer->element[15].sflags = 0;
3677         }
3678         rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, queue,
3679                     card->qdio.c_q->next_buf_to_init,
3680                     count);
3681         if (rc) {
3682                 dev_warn(&card->gdev->dev,
3683                         "QDIO reported an error, rc=%i\n", rc);
3684                 QETH_CARD_TEXT(card, 2, "qcqherr");
3685         }
3686         card->qdio.c_q->next_buf_to_init = (card->qdio.c_q->next_buf_to_init
3687                                    + count) % QDIO_MAX_BUFFERS_PER_Q;
3688
3689         netif_wake_queue(card->dev);
3690
3691         if (card->options.performance_stats) {
3692                 int delta_t = qeth_get_micros();
3693                 delta_t -= card->perf_stats.cq_start_time;
3694                 card->perf_stats.cq_time += delta_t;
3695         }
3696 out:
3697         return;
3698 }
3699
3700 void qeth_qdio_input_handler(struct ccw_device *ccwdev, unsigned int qdio_err,
3701                 unsigned int queue, int first_elem, int count,
3702                 unsigned long card_ptr)
3703 {
3704         struct qeth_card *card = (struct qeth_card *)card_ptr;
3705
3706         QETH_CARD_TEXT_(card, 2, "qihq%d", queue);
3707         QETH_CARD_TEXT_(card, 2, "qiec%d", qdio_err);
3708
3709         if (qeth_is_cq(card, queue))
3710                 qeth_qdio_cq_handler(card, qdio_err, queue, first_elem, count);
3711         else if (qdio_err)
3712                 qeth_schedule_recovery(card);
3713
3714
3715 }
3716 EXPORT_SYMBOL_GPL(qeth_qdio_input_handler);
3717
3718 void qeth_qdio_output_handler(struct ccw_device *ccwdev,
3719                 unsigned int qdio_error, int __queue, int first_element,
3720                 int count, unsigned long card_ptr)
3721 {
3722         struct qeth_card *card        = (struct qeth_card *) card_ptr;
3723         struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue];
3724         struct qeth_qdio_out_buffer *buffer;
3725         int i;
3726
3727         QETH_CARD_TEXT(card, 6, "qdouhdl");
3728         if (qdio_error & QDIO_ERROR_FATAL) {
3729                 QETH_CARD_TEXT(card, 2, "achkcond");
3730                 netif_stop_queue(card->dev);
3731                 qeth_schedule_recovery(card);
3732                 return;
3733         }
3734         if (card->options.performance_stats) {
3735                 card->perf_stats.outbound_handler_cnt++;
3736                 card->perf_stats.outbound_handler_start_time =
3737                         qeth_get_micros();
3738         }
3739         for (i = first_element; i < (first_element + count); ++i) {
3740                 int bidx = i % QDIO_MAX_BUFFERS_PER_Q;
3741                 buffer = queue->bufs[bidx];
3742                 qeth_handle_send_error(card, buffer, qdio_error);
3743
3744                 if (queue->bufstates &&
3745                     (queue->bufstates[bidx].flags &
3746                      QDIO_OUTBUF_STATE_FLAG_PENDING) != 0) {
3747                         WARN_ON_ONCE(card->options.cq != QETH_CQ_ENABLED);
3748
3749                         if (atomic_cmpxchg(&buffer->state,
3750                                            QETH_QDIO_BUF_PRIMED,
3751                                            QETH_QDIO_BUF_PENDING) ==
3752                                 QETH_QDIO_BUF_PRIMED) {
3753                                 qeth_notify_skbs(queue, buffer,
3754                                                  TX_NOTIFY_PENDING);
3755                         }
3756                         buffer->aob = queue->bufstates[bidx].aob;
3757                         QETH_CARD_TEXT_(queue->card, 5, "pel%d", bidx);
3758                         QETH_CARD_TEXT(queue->card, 5, "aob");
3759                         QETH_CARD_TEXT_(queue->card, 5, "%lx",
3760                                         virt_to_phys(buffer->aob));
3761                         if (qeth_init_qdio_out_buf(queue, bidx)) {
3762                                 QETH_CARD_TEXT(card, 2, "outofbuf");
3763                                 qeth_schedule_recovery(card);
3764                         }
3765                 } else {
3766                         if (card->options.cq == QETH_CQ_ENABLED) {
3767                                 enum iucv_tx_notify n;
3768
3769                                 n = qeth_compute_cq_notification(
3770                                         buffer->buffer->element[15].sflags, 0);
3771                                 qeth_notify_skbs(queue, buffer, n);
3772                         }
3773
3774                         qeth_clear_output_buffer(queue, buffer,
3775                                                 QETH_QDIO_BUF_EMPTY);
3776                 }
3777                 qeth_cleanup_handled_pending(queue, bidx, 0);
3778         }
3779         atomic_sub(count, &queue->used_buffers);
3780         /* check if we need to do something on this outbound queue */
3781         if (card->info.type != QETH_CARD_TYPE_IQD)
3782                 qeth_check_outbound_queue(queue);
3783
3784         netif_wake_queue(queue->card->dev);
3785         if (card->options.performance_stats)
3786                 card->perf_stats.outbound_handler_time += qeth_get_micros() -
3787                         card->perf_stats.outbound_handler_start_time;
3788 }
3789 EXPORT_SYMBOL_GPL(qeth_qdio_output_handler);
3790
3791 /* We cannot use outbound queue 3 for unicast packets on HiperSockets */
3792 static inline int qeth_cut_iqd_prio(struct qeth_card *card, int queue_num)
3793 {
3794         if ((card->info.type == QETH_CARD_TYPE_IQD) && (queue_num == 3))
3795                 return 2;
3796         return queue_num;
3797 }
3798
3799 /**
3800  * Note: Function assumes that we have 4 outbound queues.
3801  */
3802 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
3803                         int ipv, int cast_type)
3804 {
3805         __be16 *tci;
3806         u8 tos;
3807
3808         if (cast_type && card->info.is_multicast_different)
3809                 return card->info.is_multicast_different &
3810                         (card->qdio.no_out_queues - 1);
3811
3812         switch (card->qdio.do_prio_queueing) {
3813         case QETH_PRIO_Q_ING_TOS:
3814         case QETH_PRIO_Q_ING_PREC:
3815                 switch (ipv) {
3816                 case 4:
3817                         tos = ipv4_get_dsfield(ip_hdr(skb));
3818                         break;
3819                 case 6:
3820                         tos = ipv6_get_dsfield(ipv6_hdr(skb));
3821                         break;
3822                 default:
3823                         return card->qdio.default_out_queue;
3824                 }
3825                 if (card->qdio.do_prio_queueing == QETH_PRIO_Q_ING_PREC)
3826                         return qeth_cut_iqd_prio(card, ~tos >> 6 & 3);
3827                 if (tos & IPTOS_MINCOST)
3828                         return qeth_cut_iqd_prio(card, 3);
3829                 if (tos & IPTOS_RELIABILITY)
3830                         return 2;
3831                 if (tos & IPTOS_THROUGHPUT)
3832                         return 1;
3833                 if (tos & IPTOS_LOWDELAY)
3834                         return 0;
3835                 break;
3836         case QETH_PRIO_Q_ING_SKB:
3837                 if (skb->priority > 5)
3838                         return 0;
3839                 return qeth_cut_iqd_prio(card, ~skb->priority >> 1 & 3);
3840         case QETH_PRIO_Q_ING_VLAN:
3841                 tci = &((struct ethhdr *)skb->data)->h_proto;
3842                 if (be16_to_cpu(*tci) == ETH_P_8021Q)
3843                         return qeth_cut_iqd_prio(card,
3844                         ~be16_to_cpu(*(tci + 1)) >> (VLAN_PRIO_SHIFT + 1) & 3);
3845                 break;
3846         default:
3847                 break;
3848         }
3849         return card->qdio.default_out_queue;
3850 }
3851 EXPORT_SYMBOL_GPL(qeth_get_priority_queue);
3852
3853 /**
3854  * qeth_get_elements_for_frags() -      find number of SBALEs for skb frags.
3855  * @skb:                                SKB address
3856  *
3857  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3858  * fragmented part of the SKB. Returns zero for linear SKB.
3859  */
3860 int qeth_get_elements_for_frags(struct sk_buff *skb)
3861 {
3862         int cnt, elements = 0;
3863
3864         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3865                 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[cnt];
3866
3867                 elements += qeth_get_elements_for_range(
3868                         (addr_t)skb_frag_address(frag),
3869                         (addr_t)skb_frag_address(frag) + skb_frag_size(frag));
3870         }
3871         return elements;
3872 }
3873 EXPORT_SYMBOL_GPL(qeth_get_elements_for_frags);
3874
3875 /**
3876  * qeth_get_elements_no() -     find number of SBALEs for skb data, inc. frags.
3877  * @card:                       qeth card structure, to check max. elems.
3878  * @skb:                        SKB address
3879  * @extra_elems:                extra elems needed, to check against max.
3880  * @data_offset:                range starts at skb->data + data_offset
3881  *
3882  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
3883  * skb data, including linear part and fragments. Checks if the result plus
3884  * extra_elems fits under the limit for the card. Returns 0 if it does not.
3885  * Note: extra_elems is not included in the returned result.
3886  */
3887 int qeth_get_elements_no(struct qeth_card *card,
3888                      struct sk_buff *skb, int extra_elems, int data_offset)
3889 {
3890         addr_t end = (addr_t)skb->data + skb_headlen(skb);
3891         int elements = qeth_get_elements_for_frags(skb);
3892         addr_t start = (addr_t)skb->data + data_offset;
3893
3894         if (start != end)
3895                 elements += qeth_get_elements_for_range(start, end);
3896
3897         if ((elements + extra_elems) > QETH_MAX_BUFFER_ELEMENTS(card)) {
3898                 QETH_DBF_MESSAGE(2, "Invalid size of IP packet "
3899                         "(Number=%d / Length=%d). Discarded.\n",
3900                         elements + extra_elems, skb->len);
3901                 return 0;
3902         }
3903         return elements;
3904 }
3905 EXPORT_SYMBOL_GPL(qeth_get_elements_no);
3906
3907 int qeth_hdr_chk_and_bounce(struct sk_buff *skb, struct qeth_hdr **hdr, int len)
3908 {
3909         int hroom, inpage, rest;
3910
3911         if (((unsigned long)skb->data & PAGE_MASK) !=
3912             (((unsigned long)skb->data + len - 1) & PAGE_MASK)) {
3913                 hroom = skb_headroom(skb);
3914                 inpage = PAGE_SIZE - ((unsigned long) skb->data % PAGE_SIZE);
3915                 rest = len - inpage;
3916                 if (rest > hroom)
3917                         return 1;
3918                 memmove(skb->data - rest, skb->data, skb_headlen(skb));
3919                 skb->data -= rest;
3920                 skb->tail -= rest;
3921                 *hdr = (struct qeth_hdr *)skb->data;
3922                 QETH_DBF_MESSAGE(2, "skb bounce len: %d rest: %d\n", len, rest);
3923         }
3924         return 0;
3925 }
3926 EXPORT_SYMBOL_GPL(qeth_hdr_chk_and_bounce);
3927
3928 /**
3929  * qeth_push_hdr() - push a qeth_hdr onto an skb.
3930  * @skb: skb that the qeth_hdr should be pushed onto.
3931  * @hdr: double pointer to a qeth_hdr. When returning with >= 0,
3932  *       it contains a valid pointer to a qeth_hdr.
3933  * @len: length of the hdr that needs to be pushed on.
3934  *
3935  * Returns the pushed length. If the header can't be pushed on
3936  * (eg. because it would cross a page boundary), it is allocated from
3937  * the cache instead and 0 is returned.
3938  * Error to create the hdr is indicated by returning with < 0.
3939  */
3940 int qeth_push_hdr(struct sk_buff *skb, struct qeth_hdr **hdr, unsigned int len)
3941 {
3942         if (skb_headroom(skb) >= len &&
3943             qeth_get_elements_for_range((addr_t)skb->data - len,
3944                                         (addr_t)skb->data) == 1) {
3945                 *hdr = skb_push(skb, len);
3946                 return len;
3947         }
3948         /* fall back */
3949         *hdr = kmem_cache_alloc(qeth_core_header_cache, GFP_ATOMIC);
3950         if (!*hdr)
3951                 return -ENOMEM;
3952         return 0;
3953 }
3954 EXPORT_SYMBOL_GPL(qeth_push_hdr);
3955
3956 static void __qeth_fill_buffer(struct sk_buff *skb,
3957                                struct qeth_qdio_out_buffer *buf,
3958                                bool is_first_elem, unsigned int offset)
3959 {
3960         struct qdio_buffer *buffer = buf->buffer;
3961         int element = buf->next_element_to_fill;
3962         int length = skb_headlen(skb) - offset;
3963         char *data = skb->data + offset;
3964         int length_here, cnt;
3965
3966         /* map linear part into buffer element(s) */
3967         while (length > 0) {
3968                 /* length_here is the remaining amount of data in this page */
3969                 length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE);
3970                 if (length < length_here)
3971                         length_here = length;
3972
3973                 buffer->element[element].addr = data;
3974                 buffer->element[element].length = length_here;
3975                 length -= length_here;
3976                 if (is_first_elem) {
3977                         is_first_elem = false;
3978                         if (length || skb_is_nonlinear(skb))
3979                                 /* skb needs additional elements */
3980                                 buffer->element[element].eflags =
3981                                         SBAL_EFLAGS_FIRST_FRAG;
3982                         else
3983                                 buffer->element[element].eflags = 0;
3984                 } else {
3985                         buffer->element[element].eflags =
3986                                 SBAL_EFLAGS_MIDDLE_FRAG;
3987                 }
3988                 data += length_here;
3989                 element++;
3990         }
3991
3992         /* map page frags into buffer element(s) */
3993         for (cnt = 0; cnt < skb_shinfo(skb)->nr_frags; cnt++) {
3994                 skb_frag_t *frag = &skb_shinfo(skb)->frags[cnt];
3995
3996                 data = skb_frag_address(frag);
3997                 length = skb_frag_size(frag);
3998                 while (length > 0) {
3999                         length_here = PAGE_SIZE -
4000                                 ((unsigned long) data % PAGE_SIZE);
4001                         if (length < length_here)
4002                                 length_here = length;
4003
4004                         buffer->element[element].addr = data;
4005                         buffer->element[element].length = length_here;
4006                         buffer->element[element].eflags =
4007                                 SBAL_EFLAGS_MIDDLE_FRAG;
4008                         length -= length_here;
4009                         data += length_here;
4010                         element++;
4011                 }
4012         }
4013
4014         if (buffer->element[element - 1].eflags)
4015                 buffer->element[element - 1].eflags = SBAL_EFLAGS_LAST_FRAG;
4016         buf->next_element_to_fill = element;
4017 }
4018
4019 /**
4020  * qeth_fill_buffer() - map skb into an output buffer
4021  * @queue:      QDIO queue to submit the buffer on
4022  * @buf:        buffer to transport the skb
4023  * @skb:        skb to map into the buffer
4024  * @hdr:        qeth_hdr for this skb. Either at skb->data, or allocated
4025  *              from qeth_core_header_cache.
4026  * @offset:     when mapping the skb, start at skb->data + offset
4027  * @hd_len:     if > 0, build a dedicated header element of this size
4028  */
4029 static int qeth_fill_buffer(struct qeth_qdio_out_q *queue,
4030                             struct qeth_qdio_out_buffer *buf,
4031                             struct sk_buff *skb, struct qeth_hdr *hdr,
4032                             unsigned int offset, unsigned int hd_len)
4033 {
4034         struct qdio_buffer *buffer = buf->buffer;
4035         bool is_first_elem = true;
4036         int flush_cnt = 0;
4037
4038         refcount_inc(&skb->users);
4039         skb_queue_tail(&buf->skb_list, skb);
4040
4041         /* build dedicated header element */
4042         if (hd_len) {
4043                 int element = buf->next_element_to_fill;
4044                 is_first_elem = false;
4045
4046                 buffer->element[element].addr = hdr;
4047                 buffer->element[element].length = hd_len;
4048                 buffer->element[element].eflags = SBAL_EFLAGS_FIRST_FRAG;
4049                 /* remember to free cache-allocated qeth_hdr: */
4050                 buf->is_header[element] = ((void *)hdr != skb->data);
4051                 buf->next_element_to_fill++;
4052         }
4053
4054         __qeth_fill_buffer(skb, buf, is_first_elem, offset);
4055
4056         if (!queue->do_pack) {
4057                 QETH_CARD_TEXT(queue->card, 6, "fillbfnp");
4058                 /* set state to PRIMED -> will be flushed */
4059                 atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4060                 flush_cnt = 1;
4061         } else {
4062                 QETH_CARD_TEXT(queue->card, 6, "fillbfpa");
4063                 if (queue->card->options.performance_stats)
4064                         queue->card->perf_stats.skbs_sent_pack++;
4065                 if (buf->next_element_to_fill >=
4066                                 QETH_MAX_BUFFER_ELEMENTS(queue->card)) {
4067                         /*
4068                          * packed buffer if full -> set state PRIMED
4069                          * -> will be flushed
4070                          */
4071                         atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED);
4072                         flush_cnt = 1;
4073                 }
4074         }
4075         return flush_cnt;
4076 }
4077
4078 int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb,
4079                              struct qeth_hdr *hdr, unsigned int offset,
4080                              unsigned int hd_len)
4081 {
4082         int index = queue->next_buf_to_fill;
4083         struct qeth_qdio_out_buffer *buffer = queue->bufs[index];
4084
4085         /*
4086          * check if buffer is empty to make sure that we do not 'overtake'
4087          * ourselves and try to fill a buffer that is already primed
4088          */
4089         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY)
4090                 return -EBUSY;
4091         queue->next_buf_to_fill = (index + 1) % QDIO_MAX_BUFFERS_PER_Q;
4092         qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4093         qeth_flush_buffers(queue, index, 1);
4094         return 0;
4095 }
4096 EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast);
4097
4098 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
4099                         struct sk_buff *skb, struct qeth_hdr *hdr,
4100                         unsigned int offset, unsigned int hd_len,
4101                         int elements_needed)
4102 {
4103         struct qeth_qdio_out_buffer *buffer;
4104         int start_index;
4105         int flush_count = 0;
4106         int do_pack = 0;
4107         int tmp;
4108         int rc = 0;
4109
4110         /* spin until we get the queue ... */
4111         while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED,
4112                               QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED);
4113         start_index = queue->next_buf_to_fill;
4114         buffer = queue->bufs[queue->next_buf_to_fill];
4115         /*
4116          * check if buffer is empty to make sure that we do not 'overtake'
4117          * ourselves and try to fill a buffer that is already primed
4118          */
4119         if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) {
4120                 atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED);
4121                 return -EBUSY;
4122         }
4123         /* check if we need to switch packing state of this queue */
4124         qeth_switch_to_packing_if_needed(queue);
4125         if (queue->do_pack) {
4126                 do_pack = 1;
4127                 /* does packet fit in current buffer? */
4128                 if ((QETH_MAX_BUFFER_ELEMENTS(card) -
4129                     buffer->next_element_to_fill) < elements_needed) {
4130                         /* ... no -> set state PRIMED */
4131                         atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED);
4132                         flush_count++;
4133                         queue->next_buf_to_fill =
4134                                 (queue->next_buf_to_fill + 1) %
4135                                 QDIO_MAX_BUFFERS_PER_Q;
4136                         buffer = queue->bufs[queue->next_buf_to_fill];
4137                         /* we did a step forward, so check buffer state
4138                          * again */
4139                         if (atomic_read(&buffer->state) !=
4140                             QETH_QDIO_BUF_EMPTY) {
4141                                 qeth_flush_buffers(queue, start_index,
4142                                                            flush_count);
4143                                 atomic_set(&queue->state,
4144                                                 QETH_OUT_Q_UNLOCKED);
4145                                 rc = -EBUSY;
4146                                 goto out;
4147                         }
4148                 }
4149         }
4150         tmp = qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len);
4151         queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) %
4152                                   QDIO_MAX_BUFFERS_PER_Q;
4153         flush_count += tmp;
4154         if (flush_count)
4155                 qeth_flush_buffers(queue, start_index, flush_count);
4156         else if (!atomic_read(&queue->set_pci_flags_count))
4157                 atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH);
4158         /*
4159          * queue->state will go from LOCKED -> UNLOCKED or from
4160          * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us
4161          * (switch packing state or flush buffer to get another pci flag out).
4162          * In that case we will enter this loop
4163          */
4164         while (atomic_dec_return(&queue->state)) {
4165                 start_index = queue->next_buf_to_fill;
4166                 /* check if we can go back to non-packing state */
4167                 tmp = qeth_switch_to_nonpacking_if_needed(queue);
4168                 /*
4169                  * check if we need to flush a packing buffer to get a pci
4170                  * flag out on the queue
4171                  */
4172                 if (!tmp && !atomic_read(&queue->set_pci_flags_count))
4173                         tmp = qeth_prep_flush_pack_buffer(queue);
4174                 if (tmp) {
4175                         qeth_flush_buffers(queue, start_index, tmp);
4176                         flush_count += tmp;
4177                 }
4178         }
4179 out:
4180         /* at this point the queue is UNLOCKED again */
4181         if (queue->card->options.performance_stats && do_pack)
4182                 queue->card->perf_stats.bufs_sent_pack += flush_count;
4183
4184         return rc;
4185 }
4186 EXPORT_SYMBOL_GPL(qeth_do_send_packet);
4187
4188 static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
4189                 struct qeth_reply *reply, unsigned long data)
4190 {
4191         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4192         struct qeth_ipacmd_setadpparms *setparms;
4193
4194         QETH_CARD_TEXT(card, 4, "prmadpcb");
4195
4196         setparms = &(cmd->data.setadapterparms);
4197         if (qeth_setadpparms_inspect_rc(cmd)) {
4198                 QETH_CARD_TEXT_(card, 4, "prmrc%x", cmd->hdr.return_code);
4199                 setparms->data.mode = SET_PROMISC_MODE_OFF;
4200         }
4201         card->info.promisc_mode = setparms->data.mode;
4202         return 0;
4203 }
4204
4205 void qeth_setadp_promisc_mode(struct qeth_card *card)
4206 {
4207         enum qeth_ipa_promisc_modes mode;
4208         struct net_device *dev = card->dev;
4209         struct qeth_cmd_buffer *iob;
4210         struct qeth_ipa_cmd *cmd;
4211
4212         QETH_CARD_TEXT(card, 4, "setprom");
4213
4214         if (((dev->flags & IFF_PROMISC) &&
4215              (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
4216             (!(dev->flags & IFF_PROMISC) &&
4217              (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
4218                 return;
4219         mode = SET_PROMISC_MODE_OFF;
4220         if (dev->flags & IFF_PROMISC)
4221                 mode = SET_PROMISC_MODE_ON;
4222         QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
4223
4224         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
4225                         sizeof(struct qeth_ipacmd_setadpparms_hdr) + 8);
4226         if (!iob)
4227                 return;
4228         cmd = __ipa_cmd(iob);
4229         cmd->data.setadapterparms.data.mode = mode;
4230         qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL);
4231 }
4232 EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode);
4233
4234 int qeth_change_mtu(struct net_device *dev, int new_mtu)
4235 {
4236         struct qeth_card *card;
4237         char dbf_text[15];
4238
4239         card = dev->ml_priv;
4240
4241         QETH_CARD_TEXT(card, 4, "chgmtu");
4242         sprintf(dbf_text, "%8x", new_mtu);
4243         QETH_CARD_TEXT(card, 4, dbf_text);
4244
4245         if (!qeth_mtu_is_valid(card, new_mtu))
4246                 return -EINVAL;
4247         dev->mtu = new_mtu;
4248         return 0;
4249 }
4250 EXPORT_SYMBOL_GPL(qeth_change_mtu);
4251
4252 struct net_device_stats *qeth_get_stats(struct net_device *dev)
4253 {
4254         struct qeth_card *card;
4255
4256         card = dev->ml_priv;
4257
4258         QETH_CARD_TEXT(card, 5, "getstat");
4259
4260         return &card->stats;
4261 }
4262 EXPORT_SYMBOL_GPL(qeth_get_stats);
4263
4264 static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card,
4265                 struct qeth_reply *reply, unsigned long data)
4266 {
4267         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4268
4269         QETH_CARD_TEXT(card, 4, "chgmaccb");
4270         if (qeth_setadpparms_inspect_rc(cmd))
4271                 return 0;
4272
4273         if (!card->options.layer2 ||
4274             !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) {
4275                 ether_addr_copy(card->dev->dev_addr,
4276                                 cmd->data.setadapterparms.data.change_addr.addr);
4277                 card->info.mac_bits |= QETH_LAYER2_MAC_READ;
4278         }
4279         return 0;
4280 }
4281
4282 int qeth_setadpparms_change_macaddr(struct qeth_card *card)
4283 {
4284         int rc;
4285         struct qeth_cmd_buffer *iob;
4286         struct qeth_ipa_cmd *cmd;
4287
4288         QETH_CARD_TEXT(card, 4, "chgmac");
4289
4290         iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS,
4291                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4292                                    sizeof(struct qeth_change_addr));
4293         if (!iob)
4294                 return -ENOMEM;
4295         cmd = __ipa_cmd(iob);
4296         cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC;
4297         cmd->data.setadapterparms.data.change_addr.addr_size = ETH_ALEN;
4298         ether_addr_copy(cmd->data.setadapterparms.data.change_addr.addr,
4299                         card->dev->dev_addr);
4300         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb,
4301                                NULL);
4302         return rc;
4303 }
4304 EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr);
4305
4306 static int qeth_setadpparms_set_access_ctrl_cb(struct qeth_card *card,
4307                 struct qeth_reply *reply, unsigned long data)
4308 {
4309         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
4310         struct qeth_set_access_ctrl *access_ctrl_req;
4311         int fallback = *(int *)reply->param;
4312
4313         QETH_CARD_TEXT(card, 4, "setaccb");
4314         if (cmd->hdr.return_code)
4315                 return 0;
4316         qeth_setadpparms_inspect_rc(cmd);
4317
4318         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4319         QETH_DBF_TEXT_(SETUP, 2, "setaccb");
4320         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4321         QETH_DBF_TEXT_(SETUP, 2, "rc=%d",
4322                 cmd->data.setadapterparms.hdr.return_code);
4323         if (cmd->data.setadapterparms.hdr.return_code !=
4324                                                 SET_ACCESS_CTRL_RC_SUCCESS)
4325                 QETH_DBF_MESSAGE(3, "ERR:SET_ACCESS_CTRL(%s,%d)==%d\n",
4326                                 card->gdev->dev.kobj.name,
4327                                 access_ctrl_req->subcmd_code,
4328                                 cmd->data.setadapterparms.hdr.return_code);
4329         switch (cmd->data.setadapterparms.hdr.return_code) {
4330         case SET_ACCESS_CTRL_RC_SUCCESS:
4331                 if (card->options.isolation == ISOLATION_MODE_NONE) {
4332                         dev_info(&card->gdev->dev,
4333                             "QDIO data connection isolation is deactivated\n");
4334                 } else {
4335                         dev_info(&card->gdev->dev,
4336                             "QDIO data connection isolation is activated\n");
4337                 }
4338                 break;
4339         case SET_ACCESS_CTRL_RC_ALREADY_NOT_ISOLATED:
4340                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already "
4341                                 "deactivated\n", dev_name(&card->gdev->dev));
4342                 if (fallback)
4343                         card->options.isolation = card->options.prev_isolation;
4344                 break;
4345         case SET_ACCESS_CTRL_RC_ALREADY_ISOLATED:
4346                 QETH_DBF_MESSAGE(2, "%s QDIO data connection isolation already"
4347                                 " activated\n", dev_name(&card->gdev->dev));
4348                 if (fallback)
4349                         card->options.isolation = card->options.prev_isolation;
4350                 break;
4351         case SET_ACCESS_CTRL_RC_NOT_SUPPORTED:
4352                 dev_err(&card->gdev->dev, "Adapter does not "
4353                         "support QDIO data connection isolation\n");
4354                 break;
4355         case SET_ACCESS_CTRL_RC_NONE_SHARED_ADAPTER:
4356                 dev_err(&card->gdev->dev,
4357                         "Adapter is dedicated. "
4358                         "QDIO data connection isolation not supported\n");
4359                 if (fallback)
4360                         card->options.isolation = card->options.prev_isolation;
4361                 break;
4362         case SET_ACCESS_CTRL_RC_ACTIVE_CHECKSUM_OFF:
4363                 dev_err(&card->gdev->dev,
4364                         "TSO does not permit QDIO data connection isolation\n");
4365                 if (fallback)
4366                         card->options.isolation = card->options.prev_isolation;
4367                 break;
4368         case SET_ACCESS_CTRL_RC_REFLREL_UNSUPPORTED:
4369                 dev_err(&card->gdev->dev, "The adjacent switch port does not "
4370                         "support reflective relay mode\n");
4371                 if (fallback)
4372                         card->options.isolation = card->options.prev_isolation;
4373                 break;
4374         case SET_ACCESS_CTRL_RC_REFLREL_FAILED:
4375                 dev_err(&card->gdev->dev, "The reflective relay mode cannot be "
4376                                         "enabled at the adjacent switch port");
4377                 if (fallback)
4378                         card->options.isolation = card->options.prev_isolation;
4379                 break;
4380         case SET_ACCESS_CTRL_RC_REFLREL_DEACT_FAILED:
4381                 dev_warn(&card->gdev->dev, "Turning off reflective relay mode "
4382                                         "at the adjacent switch failed\n");
4383                 break;
4384         default:
4385                 /* this should never happen */
4386                 if (fallback)
4387                         card->options.isolation = card->options.prev_isolation;
4388                 break;
4389         }
4390         return 0;
4391 }
4392
4393 static int qeth_setadpparms_set_access_ctrl(struct qeth_card *card,
4394                 enum qeth_ipa_isolation_modes isolation, int fallback)
4395 {
4396         int rc;
4397         struct qeth_cmd_buffer *iob;
4398         struct qeth_ipa_cmd *cmd;
4399         struct qeth_set_access_ctrl *access_ctrl_req;
4400
4401         QETH_CARD_TEXT(card, 4, "setacctl");
4402
4403         QETH_DBF_TEXT_(SETUP, 2, "setacctl");
4404         QETH_DBF_TEXT_(SETUP, 2, "%s", card->gdev->dev.kobj.name);
4405
4406         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_ACCESS_CONTROL,
4407                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4408                                    sizeof(struct qeth_set_access_ctrl));
4409         if (!iob)
4410                 return -ENOMEM;
4411         cmd = __ipa_cmd(iob);
4412         access_ctrl_req = &cmd->data.setadapterparms.data.set_access_ctrl;
4413         access_ctrl_req->subcmd_code = isolation;
4414
4415         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_set_access_ctrl_cb,
4416                                &fallback);
4417         QETH_DBF_TEXT_(SETUP, 2, "rc=%d", rc);
4418         return rc;
4419 }
4420
4421 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback)
4422 {
4423         int rc = 0;
4424
4425         QETH_CARD_TEXT(card, 4, "setactlo");
4426
4427         if ((card->info.type == QETH_CARD_TYPE_OSD ||
4428              card->info.type == QETH_CARD_TYPE_OSX) &&
4429              qeth_adp_supported(card, IPA_SETADP_SET_ACCESS_CONTROL)) {
4430                 rc = qeth_setadpparms_set_access_ctrl(card,
4431                         card->options.isolation, fallback);
4432                 if (rc) {
4433                         QETH_DBF_MESSAGE(3,
4434                                 "IPA(SET_ACCESS_CTRL,%s,%d) sent failed\n",
4435                                 card->gdev->dev.kobj.name,
4436                                 rc);
4437                         rc = -EOPNOTSUPP;
4438                 }
4439         } else if (card->options.isolation != ISOLATION_MODE_NONE) {
4440                 card->options.isolation = ISOLATION_MODE_NONE;
4441
4442                 dev_err(&card->gdev->dev, "Adapter does not "
4443                         "support QDIO data connection isolation\n");
4444                 rc = -EOPNOTSUPP;
4445         }
4446         return rc;
4447 }
4448 EXPORT_SYMBOL_GPL(qeth_set_access_ctrl_online);
4449
4450 void qeth_tx_timeout(struct net_device *dev)
4451 {
4452         struct qeth_card *card;
4453
4454         card = dev->ml_priv;
4455         QETH_CARD_TEXT(card, 4, "txtimeo");
4456         card->stats.tx_errors++;
4457         qeth_schedule_recovery(card);
4458 }
4459 EXPORT_SYMBOL_GPL(qeth_tx_timeout);
4460
4461 static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
4462 {
4463         struct qeth_card *card = dev->ml_priv;
4464         int rc = 0;
4465
4466         switch (regnum) {
4467         case MII_BMCR: /* Basic mode control register */
4468                 rc = BMCR_FULLDPLX;
4469                 if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) &&
4470                     (card->info.link_type != QETH_LINK_TYPE_OSN) &&
4471                     (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH))
4472                         rc |= BMCR_SPEED100;
4473                 break;
4474         case MII_BMSR: /* Basic mode status register */
4475                 rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS |
4476                      BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL |
4477                      BMSR_100BASE4;
4478                 break;
4479         case MII_PHYSID1: /* PHYS ID 1 */
4480                 rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) |
4481                      dev->dev_addr[2];
4482                 rc = (rc >> 5) & 0xFFFF;
4483                 break;
4484         case MII_PHYSID2: /* PHYS ID 2 */
4485                 rc = (dev->dev_addr[2] << 10) & 0xFFFF;
4486                 break;
4487         case MII_ADVERTISE: /* Advertisement control reg */
4488                 rc = ADVERTISE_ALL;
4489                 break;
4490         case MII_LPA: /* Link partner ability reg */
4491                 rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL |
4492                      LPA_100BASE4 | LPA_LPACK;
4493                 break;
4494         case MII_EXPANSION: /* Expansion register */
4495                 break;
4496         case MII_DCOUNTER: /* disconnect counter */
4497                 break;
4498         case MII_FCSCOUNTER: /* false carrier counter */
4499                 break;
4500         case MII_NWAYTEST: /* N-way auto-neg test register */
4501                 break;
4502         case MII_RERRCOUNTER: /* rx error counter */
4503                 rc = card->stats.rx_errors;
4504                 break;
4505         case MII_SREVISION: /* silicon revision */
4506                 break;
4507         case MII_RESV1: /* reserved 1 */
4508                 break;
4509         case MII_LBRERROR: /* loopback, rx, bypass error */
4510                 break;
4511         case MII_PHYADDR: /* physical address */
4512                 break;
4513         case MII_RESV2: /* reserved 2 */
4514                 break;
4515         case MII_TPISTATUS: /* TPI status for 10mbps */
4516                 break;
4517         case MII_NCONFIG: /* network interface config */
4518                 break;
4519         default:
4520                 break;
4521         }
4522         return rc;
4523 }
4524
4525 static int qeth_send_ipa_snmp_cmd(struct qeth_card *card,
4526                 struct qeth_cmd_buffer *iob, int len,
4527                 int (*reply_cb)(struct qeth_card *, struct qeth_reply *,
4528                         unsigned long),
4529                 void *reply_param)
4530 {
4531         u16 s1, s2;
4532
4533         QETH_CARD_TEXT(card, 4, "sendsnmp");
4534
4535         memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE);
4536         memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data),
4537                &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH);
4538         /* adjust PDU length fields in IPA_PDU_HEADER */
4539         s1 = (u32) IPA_PDU_HEADER_SIZE + len;
4540         s2 = (u32) len;
4541         memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2);
4542         memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2);
4543         memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2);
4544         memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2);
4545         return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob,
4546                                       reply_cb, reply_param);
4547 }
4548
4549 static int qeth_snmp_command_cb(struct qeth_card *card,
4550                 struct qeth_reply *reply, unsigned long sdata)
4551 {
4552         struct qeth_ipa_cmd *cmd;
4553         struct qeth_arp_query_info *qinfo;
4554         struct qeth_snmp_cmd *snmp;
4555         unsigned char *data;
4556         __u16 data_len;
4557
4558         QETH_CARD_TEXT(card, 3, "snpcmdcb");
4559
4560         cmd = (struct qeth_ipa_cmd *) sdata;
4561         data = (unsigned char *)((char *)cmd - reply->offset);
4562         qinfo = (struct qeth_arp_query_info *) reply->param;
4563         snmp = &cmd->data.setadapterparms.data.snmp;
4564
4565         if (cmd->hdr.return_code) {
4566                 QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
4567                 return 0;
4568         }
4569         if (cmd->data.setadapterparms.hdr.return_code) {
4570                 cmd->hdr.return_code =
4571                         cmd->data.setadapterparms.hdr.return_code;
4572                 QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
4573                 return 0;
4574         }
4575         data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
4576         if (cmd->data.setadapterparms.hdr.seq_no == 1)
4577                 data_len -= (__u16)((char *)&snmp->data - (char *)cmd);
4578         else
4579                 data_len -= (__u16)((char *)&snmp->request - (char *)cmd);
4580
4581         /* check if there is enough room in userspace */
4582         if ((qinfo->udata_len - qinfo->udata_offset) < data_len) {
4583                 QETH_CARD_TEXT_(card, 4, "scer3%i", -ENOMEM);
4584                 cmd->hdr.return_code = IPA_RC_ENOMEM;
4585                 return 0;
4586         }
4587         QETH_CARD_TEXT_(card, 4, "snore%i",
4588                        cmd->data.setadapterparms.hdr.used_total);
4589         QETH_CARD_TEXT_(card, 4, "sseqn%i",
4590                 cmd->data.setadapterparms.hdr.seq_no);
4591         /*copy entries to user buffer*/
4592         if (cmd->data.setadapterparms.hdr.seq_no == 1) {
4593                 memcpy(qinfo->udata + qinfo->udata_offset,
4594                        (char *)snmp,
4595                        data_len + offsetof(struct qeth_snmp_cmd, data));
4596                 qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data);
4597         } else {
4598                 memcpy(qinfo->udata + qinfo->udata_offset,
4599                        (char *)&snmp->request, data_len);
4600         }
4601         qinfo->udata_offset += data_len;
4602         /* check if all replies received ... */
4603                 QETH_CARD_TEXT_(card, 4, "srtot%i",
4604                                cmd->data.setadapterparms.hdr.used_total);
4605                 QETH_CARD_TEXT_(card, 4, "srseq%i",
4606                                cmd->data.setadapterparms.hdr.seq_no);
4607         if (cmd->data.setadapterparms.hdr.seq_no <
4608             cmd->data.setadapterparms.hdr.used_total)
4609                 return 1;
4610         return 0;
4611 }
4612
4613 static int qeth_snmp_command(struct qeth_card *card, char __user *udata)
4614 {
4615         struct qeth_cmd_buffer *iob;
4616         struct qeth_ipa_cmd *cmd;
4617         struct qeth_snmp_ureq *ureq;
4618         unsigned int req_len;
4619         struct qeth_arp_query_info qinfo = {0, };
4620         int rc = 0;
4621
4622         QETH_CARD_TEXT(card, 3, "snmpcmd");
4623
4624         if (card->info.guestlan)
4625                 return -EOPNOTSUPP;
4626
4627         if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) &&
4628             (!card->options.layer2)) {
4629                 return -EOPNOTSUPP;
4630         }
4631         /* skip 4 bytes (data_len struct member) to get req_len */
4632         if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int)))
4633                 return -EFAULT;
4634         if (req_len > (QETH_BUFSIZE - IPA_PDU_HEADER_SIZE -
4635                        sizeof(struct qeth_ipacmd_hdr) -
4636                        sizeof(struct qeth_ipacmd_setadpparms_hdr)))
4637                 return -EINVAL;
4638         ureq = memdup_user(udata, req_len + sizeof(struct qeth_snmp_ureq_hdr));
4639         if (IS_ERR(ureq)) {
4640                 QETH_CARD_TEXT(card, 2, "snmpnome");
4641                 return PTR_ERR(ureq);
4642         }
4643         qinfo.udata_len = ureq->hdr.data_len;
4644         qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL);
4645         if (!qinfo.udata) {
4646                 kfree(ureq);
4647                 return -ENOMEM;
4648         }
4649         qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr);
4650
4651         iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL,
4652                                    QETH_SNMP_SETADP_CMDLENGTH + req_len);
4653         if (!iob) {
4654                 rc = -ENOMEM;
4655                 goto out;
4656         }
4657         cmd = __ipa_cmd(iob);
4658         memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len);
4659         rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len,
4660                                     qeth_snmp_command_cb, (void *)&qinfo);
4661         if (rc)
4662                 QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n",
4663                            QETH_CARD_IFNAME(card), rc);
4664         else {
4665                 if (copy_to_user(udata, qinfo.udata, qinfo.udata_len))
4666                         rc = -EFAULT;
4667         }
4668 out:
4669         kfree(ureq);
4670         kfree(qinfo.udata);
4671         return rc;
4672 }
4673
4674 static int qeth_setadpparms_query_oat_cb(struct qeth_card *card,
4675                 struct qeth_reply *reply, unsigned long data)
4676 {
4677         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4678         struct qeth_qoat_priv *priv;
4679         char *resdata;
4680         int resdatalen;
4681
4682         QETH_CARD_TEXT(card, 3, "qoatcb");
4683         if (qeth_setadpparms_inspect_rc(cmd))
4684                 return 0;
4685
4686         priv = (struct qeth_qoat_priv *)reply->param;
4687         resdatalen = cmd->data.setadapterparms.hdr.cmdlength;
4688         resdata = (char *)data + 28;
4689
4690         if (resdatalen > (priv->buffer_len - priv->response_len)) {
4691                 cmd->hdr.return_code = IPA_RC_FFFF;
4692                 return 0;
4693         }
4694
4695         memcpy((priv->buffer + priv->response_len), resdata,
4696                 resdatalen);
4697         priv->response_len += resdatalen;
4698
4699         if (cmd->data.setadapterparms.hdr.seq_no <
4700             cmd->data.setadapterparms.hdr.used_total)
4701                 return 1;
4702         return 0;
4703 }
4704
4705 static int qeth_query_oat_command(struct qeth_card *card, char __user *udata)
4706 {
4707         int rc = 0;
4708         struct qeth_cmd_buffer *iob;
4709         struct qeth_ipa_cmd *cmd;
4710         struct qeth_query_oat *oat_req;
4711         struct qeth_query_oat_data oat_data;
4712         struct qeth_qoat_priv priv;
4713         void __user *tmp;
4714
4715         QETH_CARD_TEXT(card, 3, "qoatcmd");
4716
4717         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_OAT)) {
4718                 rc = -EOPNOTSUPP;
4719                 goto out;
4720         }
4721
4722         if (copy_from_user(&oat_data, udata,
4723             sizeof(struct qeth_query_oat_data))) {
4724                         rc = -EFAULT;
4725                         goto out;
4726         }
4727
4728         priv.buffer_len = oat_data.buffer_len;
4729         priv.response_len = 0;
4730         priv.buffer =  kzalloc(oat_data.buffer_len, GFP_KERNEL);
4731         if (!priv.buffer) {
4732                 rc = -ENOMEM;
4733                 goto out;
4734         }
4735
4736         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_OAT,
4737                                    sizeof(struct qeth_ipacmd_setadpparms_hdr) +
4738                                    sizeof(struct qeth_query_oat));
4739         if (!iob) {
4740                 rc = -ENOMEM;
4741                 goto out_free;
4742         }
4743         cmd = __ipa_cmd(iob);
4744         oat_req = &cmd->data.setadapterparms.data.query_oat;
4745         oat_req->subcmd_code = oat_data.command;
4746
4747         rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_query_oat_cb,
4748                                &priv);
4749         if (!rc) {
4750                 if (is_compat_task())
4751                         tmp = compat_ptr(oat_data.ptr);
4752                 else
4753                         tmp = (void __user *)(unsigned long)oat_data.ptr;
4754
4755                 if (copy_to_user(tmp, priv.buffer,
4756                     priv.response_len)) {
4757                         rc = -EFAULT;
4758                         goto out_free;
4759                 }
4760
4761                 oat_data.response_len = priv.response_len;
4762
4763                 if (copy_to_user(udata, &oat_data,
4764                     sizeof(struct qeth_query_oat_data)))
4765                         rc = -EFAULT;
4766         } else
4767                 if (rc == IPA_RC_FFFF)
4768                         rc = -EFAULT;
4769
4770 out_free:
4771         kfree(priv.buffer);
4772 out:
4773         return rc;
4774 }
4775
4776 static int qeth_query_card_info_cb(struct qeth_card *card,
4777                                    struct qeth_reply *reply, unsigned long data)
4778 {
4779         struct carrier_info *carrier_info = (struct carrier_info *)reply->param;
4780         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *)data;
4781         struct qeth_query_card_info *card_info;
4782
4783         QETH_CARD_TEXT(card, 2, "qcrdincb");
4784         if (qeth_setadpparms_inspect_rc(cmd))
4785                 return 0;
4786
4787         card_info = &cmd->data.setadapterparms.data.card_info;
4788         carrier_info->card_type = card_info->card_type;
4789         carrier_info->port_mode = card_info->port_mode;
4790         carrier_info->port_speed = card_info->port_speed;
4791         return 0;
4792 }
4793
4794 static int qeth_query_card_info(struct qeth_card *card,
4795                                 struct carrier_info *carrier_info)
4796 {
4797         struct qeth_cmd_buffer *iob;
4798
4799         QETH_CARD_TEXT(card, 2, "qcrdinfo");
4800         if (!qeth_adp_supported(card, IPA_SETADP_QUERY_CARD_INFO))
4801                 return -EOPNOTSUPP;
4802         iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_CARD_INFO,
4803                 sizeof(struct qeth_ipacmd_setadpparms_hdr));
4804         if (!iob)
4805                 return -ENOMEM;
4806         return qeth_send_ipa_cmd(card, iob, qeth_query_card_info_cb,
4807                                         (void *)carrier_info);
4808 }
4809
4810 /**
4811  * qeth_vm_request_mac() - Request a hypervisor-managed MAC address
4812  * @card: pointer to a qeth_card
4813  *
4814  * Returns
4815  *      0, if a MAC address has been set for the card's netdevice
4816  *      a return code, for various error conditions
4817  */
4818 int qeth_vm_request_mac(struct qeth_card *card)
4819 {
4820         struct diag26c_mac_resp *response;
4821         struct diag26c_mac_req *request;
4822         struct ccw_dev_id id;
4823         int rc;
4824
4825         QETH_DBF_TEXT(SETUP, 2, "vmreqmac");
4826
4827         if (!card->dev)
4828                 return -ENODEV;
4829
4830         request = kzalloc(sizeof(*request), GFP_KERNEL | GFP_DMA);
4831         response = kzalloc(sizeof(*response), GFP_KERNEL | GFP_DMA);
4832         if (!request || !response) {
4833                 rc = -ENOMEM;
4834                 goto out;
4835         }
4836
4837         ccw_device_get_id(CARD_DDEV(card), &id);
4838         request->resp_buf_len = sizeof(*response);
4839         request->resp_version = DIAG26C_VERSION2;
4840         request->op_code = DIAG26C_GET_MAC;
4841         request->devno = id.devno;
4842
4843         QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4844         rc = diag26c(request, response, DIAG26C_MAC_SERVICES);
4845         QETH_DBF_HEX(CTRL, 2, request, sizeof(*request));
4846         if (rc)
4847                 goto out;
4848         QETH_DBF_HEX(CTRL, 2, response, sizeof(*response));
4849
4850         if (request->resp_buf_len < sizeof(*response) ||
4851             response->version != request->resp_version) {
4852                 rc = -EIO;
4853                 QETH_DBF_TEXT(SETUP, 2, "badresp");
4854                 QETH_DBF_HEX(SETUP, 2, &request->resp_buf_len,
4855                              sizeof(request->resp_buf_len));
4856         } else if (!is_valid_ether_addr(response->mac)) {
4857                 rc = -EINVAL;
4858                 QETH_DBF_TEXT(SETUP, 2, "badmac");
4859                 QETH_DBF_HEX(SETUP, 2, response->mac, ETH_ALEN);
4860         } else {
4861                 ether_addr_copy(card->dev->dev_addr, response->mac);
4862         }
4863
4864 out:
4865         kfree(response);
4866         kfree(request);
4867         return rc;
4868 }
4869 EXPORT_SYMBOL_GPL(qeth_vm_request_mac);
4870
4871 static int qeth_get_qdio_q_format(struct qeth_card *card)
4872 {
4873         if (card->info.type == QETH_CARD_TYPE_IQD)
4874                 return QDIO_IQDIO_QFMT;
4875         else
4876                 return QDIO_QETH_QFMT;
4877 }
4878
4879 static void qeth_determine_capabilities(struct qeth_card *card)
4880 {
4881         int rc;
4882         int length;
4883         char *prcd;
4884         struct ccw_device *ddev;
4885         int ddev_offline = 0;
4886
4887         QETH_DBF_TEXT(SETUP, 2, "detcapab");
4888         ddev = CARD_DDEV(card);
4889         if (!ddev->online) {
4890                 ddev_offline = 1;
4891                 rc = ccw_device_set_online(ddev);
4892                 if (rc) {
4893                         QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
4894                         goto out;
4895                 }
4896         }
4897
4898         rc = qeth_read_conf_data(card, (void **) &prcd, &length);
4899         if (rc) {
4900                 QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n",
4901                         dev_name(&card->gdev->dev), rc);
4902                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
4903                 goto out_offline;
4904         }
4905         qeth_configure_unitaddr(card, prcd);
4906         if (ddev_offline)
4907                 qeth_configure_blkt_default(card, prcd);
4908         kfree(prcd);
4909
4910         rc = qdio_get_ssqd_desc(ddev, &card->ssqd);
4911         if (rc)
4912                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
4913
4914         QETH_DBF_TEXT_(SETUP, 2, "qfmt%d", card->ssqd.qfmt);
4915         QETH_DBF_TEXT_(SETUP, 2, "ac1:%02x", card->ssqd.qdioac1);
4916         QETH_DBF_TEXT_(SETUP, 2, "ac2:%04x", card->ssqd.qdioac2);
4917         QETH_DBF_TEXT_(SETUP, 2, "ac3:%04x", card->ssqd.qdioac3);
4918         QETH_DBF_TEXT_(SETUP, 2, "icnt%d", card->ssqd.icnt);
4919         if (!((card->ssqd.qfmt != QDIO_IQDIO_QFMT) ||
4920             ((card->ssqd.qdioac1 & CHSC_AC1_INITIATE_INPUTQ) == 0) ||
4921             ((card->ssqd.qdioac3 & CHSC_AC3_FORMAT2_CQ_AVAILABLE) == 0))) {
4922                 dev_info(&card->gdev->dev,
4923                         "Completion Queueing supported\n");
4924         } else {
4925                 card->options.cq = QETH_CQ_NOTAVAILABLE;
4926         }
4927
4928
4929 out_offline:
4930         if (ddev_offline == 1)
4931                 ccw_device_set_offline(ddev);
4932 out:
4933         return;
4934 }
4935
4936 static void qeth_qdio_establish_cq(struct qeth_card *card,
4937                                    struct qdio_buffer **in_sbal_ptrs,
4938                                    void (**queue_start_poll)
4939                                         (struct ccw_device *, int,
4940                                          unsigned long))
4941 {
4942         int i;
4943
4944         if (card->options.cq == QETH_CQ_ENABLED) {
4945                 int offset = QDIO_MAX_BUFFERS_PER_Q *
4946                              (card->qdio.no_in_queues - 1);
4947                 for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4948                         in_sbal_ptrs[offset + i] = (struct qdio_buffer *)
4949                                 virt_to_phys(card->qdio.c_q->bufs[i].buffer);
4950                 }
4951
4952                 queue_start_poll[card->qdio.no_in_queues - 1] = NULL;
4953         }
4954 }
4955
4956 static int qeth_qdio_establish(struct qeth_card *card)
4957 {
4958         struct qdio_initialize init_data;
4959         char *qib_param_field;
4960         struct qdio_buffer **in_sbal_ptrs;
4961         void (**queue_start_poll) (struct ccw_device *, int, unsigned long);
4962         struct qdio_buffer **out_sbal_ptrs;
4963         int i, j, k;
4964         int rc = 0;
4965
4966         QETH_DBF_TEXT(SETUP, 2, "qdioest");
4967
4968         qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char),
4969                               GFP_KERNEL);
4970         if (!qib_param_field) {
4971                 rc =  -ENOMEM;
4972                 goto out_free_nothing;
4973         }
4974
4975         qeth_create_qib_param_field(card, qib_param_field);
4976         qeth_create_qib_param_field_blkt(card, qib_param_field);
4977
4978         in_sbal_ptrs = kzalloc(card->qdio.no_in_queues *
4979                                QDIO_MAX_BUFFERS_PER_Q * sizeof(void *),
4980                                GFP_KERNEL);
4981         if (!in_sbal_ptrs) {
4982                 rc = -ENOMEM;
4983                 goto out_free_qib_param;
4984         }
4985         for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) {
4986                 in_sbal_ptrs[i] = (struct qdio_buffer *)
4987                         virt_to_phys(card->qdio.in_q->bufs[i].buffer);
4988         }
4989
4990         queue_start_poll = kzalloc(sizeof(void *) * card->qdio.no_in_queues,
4991                                    GFP_KERNEL);
4992         if (!queue_start_poll) {
4993                 rc = -ENOMEM;
4994                 goto out_free_in_sbals;
4995         }
4996         for (i = 0; i < card->qdio.no_in_queues; ++i)
4997                 queue_start_poll[i] = card->discipline->start_poll;
4998
4999         qeth_qdio_establish_cq(card, in_sbal_ptrs, queue_start_poll);
5000
5001         out_sbal_ptrs =
5002                 kzalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q *
5003                         sizeof(void *), GFP_KERNEL);
5004         if (!out_sbal_ptrs) {
5005                 rc = -ENOMEM;
5006                 goto out_free_queue_start_poll;
5007         }
5008         for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i)
5009                 for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) {
5010                         out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys(
5011                                 card->qdio.out_qs[i]->bufs[j]->buffer);
5012                 }
5013
5014         memset(&init_data, 0, sizeof(struct qdio_initialize));
5015         init_data.cdev                   = CARD_DDEV(card);
5016         init_data.q_format               = qeth_get_qdio_q_format(card);
5017         init_data.qib_param_field_format = 0;
5018         init_data.qib_param_field        = qib_param_field;
5019         init_data.no_input_qs            = card->qdio.no_in_queues;
5020         init_data.no_output_qs           = card->qdio.no_out_queues;
5021         init_data.input_handler          = card->discipline->input_handler;
5022         init_data.output_handler         = card->discipline->output_handler;
5023         init_data.queue_start_poll_array = queue_start_poll;
5024         init_data.int_parm               = (unsigned long) card;
5025         init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
5026         init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
5027         init_data.output_sbal_state_array = card->qdio.out_bufstates;
5028         init_data.scan_threshold =
5029                 (card->info.type == QETH_CARD_TYPE_IQD) ? 1 : 32;
5030
5031         if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED,
5032                 QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) {
5033                 rc = qdio_allocate(&init_data);
5034                 if (rc) {
5035                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5036                         goto out;
5037                 }
5038                 rc = qdio_establish(&init_data);
5039                 if (rc) {
5040                         atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED);
5041                         qdio_free(CARD_DDEV(card));
5042                 }
5043         }
5044
5045         switch (card->options.cq) {
5046         case QETH_CQ_ENABLED:
5047                 dev_info(&card->gdev->dev, "Completion Queue support enabled");
5048                 break;
5049         case QETH_CQ_DISABLED:
5050                 dev_info(&card->gdev->dev, "Completion Queue support disabled");
5051                 break;
5052         default:
5053                 break;
5054         }
5055 out:
5056         kfree(out_sbal_ptrs);
5057 out_free_queue_start_poll:
5058         kfree(queue_start_poll);
5059 out_free_in_sbals:
5060         kfree(in_sbal_ptrs);
5061 out_free_qib_param:
5062         kfree(qib_param_field);
5063 out_free_nothing:
5064         return rc;
5065 }
5066
5067 static void qeth_core_free_card(struct qeth_card *card)
5068 {
5069
5070         QETH_DBF_TEXT(SETUP, 2, "freecrd");
5071         QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *));
5072         qeth_clean_channel(&card->read);
5073         qeth_clean_channel(&card->write);
5074         qeth_free_qdio_buffers(card);
5075         unregister_service_level(&card->qeth_service_level);
5076         kfree(card);
5077 }
5078
5079 void qeth_trace_features(struct qeth_card *card)
5080 {
5081         QETH_CARD_TEXT(card, 2, "features");
5082         QETH_CARD_HEX(card, 2, &card->options.ipa4, sizeof(card->options.ipa4));
5083         QETH_CARD_HEX(card, 2, &card->options.ipa6, sizeof(card->options.ipa6));
5084         QETH_CARD_HEX(card, 2, &card->options.adp, sizeof(card->options.adp));
5085         QETH_CARD_HEX(card, 2, &card->info.diagass_support,
5086                       sizeof(card->info.diagass_support));
5087 }
5088 EXPORT_SYMBOL_GPL(qeth_trace_features);
5089
5090 static struct ccw_device_id qeth_ids[] = {
5091         {CCW_DEVICE_DEVTYPE(0x1731, 0x01, 0x1732, 0x01),
5092                                         .driver_info = QETH_CARD_TYPE_OSD},
5093         {CCW_DEVICE_DEVTYPE(0x1731, 0x05, 0x1732, 0x05),
5094                                         .driver_info = QETH_CARD_TYPE_IQD},
5095         {CCW_DEVICE_DEVTYPE(0x1731, 0x06, 0x1732, 0x06),
5096                                         .driver_info = QETH_CARD_TYPE_OSN},
5097         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x03),
5098                                         .driver_info = QETH_CARD_TYPE_OSM},
5099         {CCW_DEVICE_DEVTYPE(0x1731, 0x02, 0x1732, 0x02),
5100                                         .driver_info = QETH_CARD_TYPE_OSX},
5101         {},
5102 };
5103 MODULE_DEVICE_TABLE(ccw, qeth_ids);
5104
5105 static struct ccw_driver qeth_ccw_driver = {
5106         .driver = {
5107                 .owner = THIS_MODULE,
5108                 .name = "qeth",
5109         },
5110         .ids = qeth_ids,
5111         .probe = ccwgroup_probe_ccwdev,
5112         .remove = ccwgroup_remove_ccwdev,
5113 };
5114
5115 int qeth_core_hardsetup_card(struct qeth_card *card)
5116 {
5117         int retries = 3;
5118         int rc;
5119
5120         QETH_DBF_TEXT(SETUP, 2, "hrdsetup");
5121         atomic_set(&card->force_alloc_skb, 0);
5122         qeth_update_from_chp_desc(card);
5123 retry:
5124         if (retries < 3)
5125                 QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n",
5126                         dev_name(&card->gdev->dev));
5127         rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD);
5128         ccw_device_set_offline(CARD_DDEV(card));
5129         ccw_device_set_offline(CARD_WDEV(card));
5130         ccw_device_set_offline(CARD_RDEV(card));
5131         qdio_free(CARD_DDEV(card));
5132         rc = ccw_device_set_online(CARD_RDEV(card));
5133         if (rc)
5134                 goto retriable;
5135         rc = ccw_device_set_online(CARD_WDEV(card));
5136         if (rc)
5137                 goto retriable;
5138         rc = ccw_device_set_online(CARD_DDEV(card));
5139         if (rc)
5140                 goto retriable;
5141 retriable:
5142         if (rc == -ERESTARTSYS) {
5143                 QETH_DBF_TEXT(SETUP, 2, "break1");
5144                 return rc;
5145         } else if (rc) {
5146                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc);
5147                 if (--retries < 0)
5148                         goto out;
5149                 else
5150                         goto retry;
5151         }
5152         qeth_determine_capabilities(card);
5153         qeth_init_tokens(card);
5154         qeth_init_func_level(card);
5155         rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb);
5156         if (rc == -ERESTARTSYS) {
5157                 QETH_DBF_TEXT(SETUP, 2, "break2");
5158                 return rc;
5159         } else if (rc) {
5160                 QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc);
5161                 if (--retries < 0)
5162                         goto out;
5163                 else
5164                         goto retry;
5165         }
5166         rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb);
5167         if (rc == -ERESTARTSYS) {
5168                 QETH_DBF_TEXT(SETUP, 2, "break3");
5169                 return rc;
5170         } else if (rc) {
5171                 QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc);
5172                 if (--retries < 0)
5173                         goto out;
5174                 else
5175                         goto retry;
5176         }
5177         card->read_or_write_problem = 0;
5178         rc = qeth_mpc_initialize(card);
5179         if (rc) {
5180                 QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc);
5181                 goto out;
5182         }
5183
5184         rc = qeth_send_startlan(card);
5185         if (rc) {
5186                 QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc);
5187                 if (rc == IPA_RC_LAN_OFFLINE) {
5188                         dev_warn(&card->gdev->dev,
5189                                 "The LAN is offline\n");
5190                         card->lan_online = 0;
5191                 } else {
5192                         rc = -ENODEV;
5193                         goto out;
5194                 }
5195         } else
5196                 card->lan_online = 1;
5197
5198         card->options.ipa4.supported_funcs = 0;
5199         card->options.ipa6.supported_funcs = 0;
5200         card->options.adp.supported_funcs = 0;
5201         card->options.sbp.supported_funcs = 0;
5202         card->info.diagass_support = 0;
5203         rc = qeth_query_ipassists(card, QETH_PROT_IPV4);
5204         if (rc == -ENOMEM)
5205                 goto out;
5206         if (qeth_is_supported(card, IPA_SETADAPTERPARMS)) {
5207                 rc = qeth_query_setadapterparms(card);
5208                 if (rc < 0) {
5209                         QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc);
5210                         goto out;
5211                 }
5212         }
5213         if (qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
5214                 rc = qeth_query_setdiagass(card);
5215                 if (rc < 0) {
5216                         QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc);
5217                         goto out;
5218                 }
5219         }
5220         return 0;
5221 out:
5222         dev_warn(&card->gdev->dev, "The qeth device driver failed to recover "
5223                 "an error on the device\n");
5224         QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n",
5225                 dev_name(&card->gdev->dev), rc);
5226         return rc;
5227 }
5228 EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card);
5229
5230 static void qeth_create_skb_frag(struct qdio_buffer_element *element,
5231                                  struct sk_buff *skb, int offset, int data_len)
5232 {
5233         struct page *page = virt_to_page(element->addr);
5234         unsigned int next_frag;
5235
5236         /* first fill the linear space */
5237         if (!skb->len) {
5238                 unsigned int linear = min(data_len, skb_tailroom(skb));
5239
5240                 skb_put_data(skb, element->addr + offset, linear);
5241                 data_len -= linear;
5242                 if (!data_len)
5243                         return;
5244                 offset += linear;
5245                 /* fall through to add page frag for remaining data */
5246         }
5247
5248         next_frag = skb_shinfo(skb)->nr_frags;
5249         get_page(page);
5250         skb_add_rx_frag(skb, next_frag, page, offset, data_len, data_len);
5251 }
5252
5253 static inline int qeth_is_last_sbale(struct qdio_buffer_element *sbale)
5254 {
5255         return (sbale->eflags & SBAL_EFLAGS_LAST_ENTRY);
5256 }
5257
5258 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card,
5259                 struct qeth_qdio_buffer *qethbuffer,
5260                 struct qdio_buffer_element **__element, int *__offset,
5261                 struct qeth_hdr **hdr)
5262 {
5263         struct qdio_buffer_element *element = *__element;
5264         struct qdio_buffer *buffer = qethbuffer->buffer;
5265         int offset = *__offset;
5266         struct sk_buff *skb;
5267         int skb_len = 0;
5268         void *data_ptr;
5269         int data_len;
5270         int headroom = 0;
5271         int use_rx_sg = 0;
5272
5273         /* qeth_hdr must not cross element boundaries */
5274         while (element->length < offset + sizeof(struct qeth_hdr)) {
5275                 if (qeth_is_last_sbale(element))
5276                         return NULL;
5277                 element++;
5278                 offset = 0;
5279         }
5280         *hdr = element->addr + offset;
5281
5282         offset += sizeof(struct qeth_hdr);
5283         switch ((*hdr)->hdr.l2.id) {
5284         case QETH_HEADER_TYPE_LAYER2:
5285                 skb_len = (*hdr)->hdr.l2.pkt_length;
5286                 break;
5287         case QETH_HEADER_TYPE_LAYER3:
5288                 skb_len = (*hdr)->hdr.l3.length;
5289                 headroom = ETH_HLEN;
5290                 break;
5291         case QETH_HEADER_TYPE_OSN:
5292                 skb_len = (*hdr)->hdr.osn.pdu_length;
5293                 headroom = sizeof(struct qeth_hdr);
5294                 break;
5295         default:
5296                 break;
5297         }
5298
5299         if (!skb_len)
5300                 return NULL;
5301
5302         if (((skb_len >= card->options.rx_sg_cb) &&
5303              (!(card->info.type == QETH_CARD_TYPE_OSN)) &&
5304              (!atomic_read(&card->force_alloc_skb))) ||
5305             (card->options.cq == QETH_CQ_ENABLED))
5306                 use_rx_sg = 1;
5307
5308         if (use_rx_sg && qethbuffer->rx_skb) {
5309                 /* QETH_CQ_ENABLED only: */
5310                 skb = qethbuffer->rx_skb;
5311                 qethbuffer->rx_skb = NULL;
5312         } else {
5313                 unsigned int linear = (use_rx_sg) ? QETH_RX_PULL_LEN : skb_len;
5314
5315                 skb = napi_alloc_skb(&card->napi, linear + headroom);
5316         }
5317         if (!skb)
5318                 goto no_mem;
5319         if (headroom)
5320                 skb_reserve(skb, headroom);
5321
5322         data_ptr = element->addr + offset;
5323         while (skb_len) {
5324                 data_len = min(skb_len, (int)(element->length - offset));
5325                 if (data_len) {
5326                         if (use_rx_sg)
5327                                 qeth_create_skb_frag(element, skb, offset,
5328                                                      data_len);
5329                         else
5330                                 skb_put_data(skb, data_ptr, data_len);
5331                 }
5332                 skb_len -= data_len;
5333                 if (skb_len) {
5334                         if (qeth_is_last_sbale(element)) {
5335                                 QETH_CARD_TEXT(card, 4, "unexeob");
5336                                 QETH_CARD_HEX(card, 2, buffer, sizeof(void *));
5337                                 dev_kfree_skb_any(skb);
5338                                 card->stats.rx_errors++;
5339                                 return NULL;
5340                         }
5341                         element++;
5342                         offset = 0;
5343                         data_ptr = element->addr;
5344                 } else {
5345                         offset += data_len;
5346                 }
5347         }
5348         *__element = element;
5349         *__offset = offset;
5350         if (use_rx_sg && card->options.performance_stats) {
5351                 card->perf_stats.sg_skbs_rx++;
5352                 card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags;
5353         }
5354         return skb;
5355 no_mem:
5356         if (net_ratelimit()) {
5357                 QETH_CARD_TEXT(card, 2, "noskbmem");
5358         }
5359         card->stats.rx_dropped++;
5360         return NULL;
5361 }
5362 EXPORT_SYMBOL_GPL(qeth_core_get_next_skb);
5363
5364 int qeth_poll(struct napi_struct *napi, int budget)
5365 {
5366         struct qeth_card *card = container_of(napi, struct qeth_card, napi);
5367         int work_done = 0;
5368         struct qeth_qdio_buffer *buffer;
5369         int done;
5370         int new_budget = budget;
5371
5372         if (card->options.performance_stats) {
5373                 card->perf_stats.inbound_cnt++;
5374                 card->perf_stats.inbound_start_time = qeth_get_micros();
5375         }
5376
5377         while (1) {
5378                 if (!card->rx.b_count) {
5379                         card->rx.qdio_err = 0;
5380                         card->rx.b_count = qdio_get_next_buffers(
5381                                 card->data.ccwdev, 0, &card->rx.b_index,
5382                                 &card->rx.qdio_err);
5383                         if (card->rx.b_count <= 0) {
5384                                 card->rx.b_count = 0;
5385                                 break;
5386                         }
5387                         card->rx.b_element =
5388                                 &card->qdio.in_q->bufs[card->rx.b_index]
5389                                 .buffer->element[0];
5390                         card->rx.e_offset = 0;
5391                 }
5392
5393                 while (card->rx.b_count) {
5394                         buffer = &card->qdio.in_q->bufs[card->rx.b_index];
5395                         if (!(card->rx.qdio_err &&
5396                             qeth_check_qdio_errors(card, buffer->buffer,
5397                             card->rx.qdio_err, "qinerr")))
5398                                 work_done +=
5399                                         card->discipline->process_rx_buffer(
5400                                                 card, new_budget, &done);
5401                         else
5402                                 done = 1;
5403
5404                         if (done) {
5405                                 if (card->options.performance_stats)
5406                                         card->perf_stats.bufs_rec++;
5407                                 qeth_put_buffer_pool_entry(card,
5408                                         buffer->pool_entry);
5409                                 qeth_queue_input_buffer(card, card->rx.b_index);
5410                                 card->rx.b_count--;
5411                                 if (card->rx.b_count) {
5412                                         card->rx.b_index =
5413                                                 (card->rx.b_index + 1) %
5414                                                 QDIO_MAX_BUFFERS_PER_Q;
5415                                         card->rx.b_element =
5416                                                 &card->qdio.in_q
5417                                                 ->bufs[card->rx.b_index]
5418                                                 .buffer->element[0];
5419                                         card->rx.e_offset = 0;
5420                                 }
5421                         }
5422
5423                         if (work_done >= budget)
5424                                 goto out;
5425                         else
5426                                 new_budget = budget - work_done;
5427                 }
5428         }
5429
5430         napi_complete_done(napi, work_done);
5431         if (qdio_start_irq(card->data.ccwdev, 0))
5432                 napi_schedule(&card->napi);
5433 out:
5434         if (card->options.performance_stats)
5435                 card->perf_stats.inbound_time += qeth_get_micros() -
5436                         card->perf_stats.inbound_start_time;
5437         return work_done;
5438 }
5439 EXPORT_SYMBOL_GPL(qeth_poll);
5440
5441 static int qeth_setassparms_inspect_rc(struct qeth_ipa_cmd *cmd)
5442 {
5443         if (!cmd->hdr.return_code)
5444                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5445         return cmd->hdr.return_code;
5446 }
5447
5448 int qeth_setassparms_cb(struct qeth_card *card,
5449                         struct qeth_reply *reply, unsigned long data)
5450 {
5451         struct qeth_ipa_cmd *cmd;
5452
5453         QETH_CARD_TEXT(card, 4, "defadpcb");
5454
5455         cmd = (struct qeth_ipa_cmd *) data;
5456         if (cmd->hdr.return_code == 0) {
5457                 cmd->hdr.return_code = cmd->data.setassparms.hdr.return_code;
5458                 if (cmd->hdr.prot_version == QETH_PROT_IPV4)
5459                         card->options.ipa4.enabled_funcs = cmd->hdr.ipa_enabled;
5460                 if (cmd->hdr.prot_version == QETH_PROT_IPV6)
5461                         card->options.ipa6.enabled_funcs = cmd->hdr.ipa_enabled;
5462         }
5463         return 0;
5464 }
5465 EXPORT_SYMBOL_GPL(qeth_setassparms_cb);
5466
5467 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
5468                                                  enum qeth_ipa_funcs ipa_func,
5469                                                  __u16 cmd_code, __u16 len,
5470                                                  enum qeth_prot_versions prot)
5471 {
5472         struct qeth_cmd_buffer *iob;
5473         struct qeth_ipa_cmd *cmd;
5474
5475         QETH_CARD_TEXT(card, 4, "getasscm");
5476         iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETASSPARMS, prot);
5477
5478         if (iob) {
5479                 cmd = __ipa_cmd(iob);
5480                 cmd->data.setassparms.hdr.assist_no = ipa_func;
5481                 cmd->data.setassparms.hdr.length = 8 + len;
5482                 cmd->data.setassparms.hdr.command_code = cmd_code;
5483                 cmd->data.setassparms.hdr.return_code = 0;
5484                 cmd->data.setassparms.hdr.seq_no = 0;
5485         }
5486
5487         return iob;
5488 }
5489 EXPORT_SYMBOL_GPL(qeth_get_setassparms_cmd);
5490
5491 int qeth_send_setassparms(struct qeth_card *card,
5492                           struct qeth_cmd_buffer *iob, __u16 len, long data,
5493                           int (*reply_cb)(struct qeth_card *,
5494                                           struct qeth_reply *, unsigned long),
5495                           void *reply_param)
5496 {
5497         int rc;
5498         struct qeth_ipa_cmd *cmd;
5499
5500         QETH_CARD_TEXT(card, 4, "sendassp");
5501
5502         cmd = __ipa_cmd(iob);
5503         if (len <= sizeof(__u32))
5504                 cmd->data.setassparms.data.flags_32bit = (__u32) data;
5505         else   /* (len > sizeof(__u32)) */
5506                 memcpy(&cmd->data.setassparms.data, (void *) data, len);
5507
5508         rc = qeth_send_ipa_cmd(card, iob, reply_cb, reply_param);
5509         return rc;
5510 }
5511 EXPORT_SYMBOL_GPL(qeth_send_setassparms);
5512
5513 int qeth_send_simple_setassparms(struct qeth_card *card,
5514                                  enum qeth_ipa_funcs ipa_func,
5515                                  __u16 cmd_code, long data)
5516 {
5517         int rc;
5518         int length = 0;
5519         struct qeth_cmd_buffer *iob;
5520
5521         QETH_CARD_TEXT(card, 4, "simassp4");
5522         if (data)
5523                 length = sizeof(__u32);
5524         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
5525                                        length, QETH_PROT_IPV4);
5526         if (!iob)
5527                 return -ENOMEM;
5528         rc = qeth_send_setassparms(card, iob, length, data,
5529                                    qeth_setassparms_cb, NULL);
5530         return rc;
5531 }
5532 EXPORT_SYMBOL_GPL(qeth_send_simple_setassparms);
5533
5534 static void qeth_unregister_dbf_views(void)
5535 {
5536         int x;
5537         for (x = 0; x < QETH_DBF_INFOS; x++) {
5538                 debug_unregister(qeth_dbf[x].id);
5539                 qeth_dbf[x].id = NULL;
5540         }
5541 }
5542
5543 void qeth_dbf_longtext(debug_info_t *id, int level, char *fmt, ...)
5544 {
5545         char dbf_txt_buf[32];
5546         va_list args;
5547
5548         if (!debug_level_enabled(id, level))
5549                 return;
5550         va_start(args, fmt);
5551         vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
5552         va_end(args);
5553         debug_text_event(id, level, dbf_txt_buf);
5554 }
5555 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);
5556
5557 static int qeth_register_dbf_views(void)
5558 {
5559         int ret;
5560         int x;
5561
5562         for (x = 0; x < QETH_DBF_INFOS; x++) {
5563                 /* register the areas */
5564                 qeth_dbf[x].id = debug_register(qeth_dbf[x].name,
5565                                                 qeth_dbf[x].pages,
5566                                                 qeth_dbf[x].areas,
5567                                                 qeth_dbf[x].len);
5568                 if (qeth_dbf[x].id == NULL) {
5569                         qeth_unregister_dbf_views();
5570                         return -ENOMEM;
5571                 }
5572
5573                 /* register a view */
5574                 ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view);
5575                 if (ret) {
5576                         qeth_unregister_dbf_views();
5577                         return ret;
5578                 }
5579
5580                 /* set a passing level */
5581                 debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level);
5582         }
5583
5584         return 0;
5585 }
5586
5587 int qeth_core_load_discipline(struct qeth_card *card,
5588                 enum qeth_discipline_id discipline)
5589 {
5590         int rc = 0;
5591
5592         mutex_lock(&qeth_mod_mutex);
5593         switch (discipline) {
5594         case QETH_DISCIPLINE_LAYER3:
5595                 card->discipline = try_then_request_module(
5596                         symbol_get(qeth_l3_discipline), "qeth_l3");
5597                 break;
5598         case QETH_DISCIPLINE_LAYER2:
5599                 card->discipline = try_then_request_module(
5600                         symbol_get(qeth_l2_discipline), "qeth_l2");
5601                 break;
5602         default:
5603                 break;
5604         }
5605
5606         if (!card->discipline) {
5607                 dev_err(&card->gdev->dev, "There is no kernel module to "
5608                         "support discipline %d\n", discipline);
5609                 rc = -EINVAL;
5610         }
5611         mutex_unlock(&qeth_mod_mutex);
5612         return rc;
5613 }
5614
5615 void qeth_core_free_discipline(struct qeth_card *card)
5616 {
5617         if (card->options.layer2)
5618                 symbol_put(qeth_l2_discipline);
5619         else
5620                 symbol_put(qeth_l3_discipline);
5621         card->discipline = NULL;
5622 }
5623
5624 const struct device_type qeth_generic_devtype = {
5625         .name = "qeth_generic",
5626         .groups = qeth_generic_attr_groups,
5627 };
5628 EXPORT_SYMBOL_GPL(qeth_generic_devtype);
5629
5630 static const struct device_type qeth_osn_devtype = {
5631         .name = "qeth_osn",
5632         .groups = qeth_osn_attr_groups,
5633 };
5634
5635 #define DBF_NAME_LEN    20
5636
5637 struct qeth_dbf_entry {
5638         char dbf_name[DBF_NAME_LEN];
5639         debug_info_t *dbf_info;
5640         struct list_head dbf_list;
5641 };
5642
5643 static LIST_HEAD(qeth_dbf_list);
5644 static DEFINE_MUTEX(qeth_dbf_list_mutex);
5645
5646 static debug_info_t *qeth_get_dbf_entry(char *name)
5647 {
5648         struct qeth_dbf_entry *entry;
5649         debug_info_t *rc = NULL;
5650
5651         mutex_lock(&qeth_dbf_list_mutex);
5652         list_for_each_entry(entry, &qeth_dbf_list, dbf_list) {
5653                 if (strcmp(entry->dbf_name, name) == 0) {
5654                         rc = entry->dbf_info;
5655                         break;
5656                 }
5657         }
5658         mutex_unlock(&qeth_dbf_list_mutex);
5659         return rc;
5660 }
5661
5662 static int qeth_add_dbf_entry(struct qeth_card *card, char *name)
5663 {
5664         struct qeth_dbf_entry *new_entry;
5665
5666         card->debug = debug_register(name, 2, 1, 8);
5667         if (!card->debug) {
5668                 QETH_DBF_TEXT_(SETUP, 2, "%s", "qcdbf");
5669                 goto err;
5670         }
5671         if (debug_register_view(card->debug, &debug_hex_ascii_view))
5672                 goto err_dbg;
5673         new_entry = kzalloc(sizeof(struct qeth_dbf_entry), GFP_KERNEL);
5674         if (!new_entry)
5675                 goto err_dbg;
5676         strncpy(new_entry->dbf_name, name, DBF_NAME_LEN);
5677         new_entry->dbf_info = card->debug;
5678         mutex_lock(&qeth_dbf_list_mutex);
5679         list_add(&new_entry->dbf_list, &qeth_dbf_list);
5680         mutex_unlock(&qeth_dbf_list_mutex);
5681
5682         return 0;
5683
5684 err_dbg:
5685         debug_unregister(card->debug);
5686 err:
5687         return -ENOMEM;
5688 }
5689
5690 static void qeth_clear_dbf_list(void)
5691 {
5692         struct qeth_dbf_entry *entry, *tmp;
5693
5694         mutex_lock(&qeth_dbf_list_mutex);
5695         list_for_each_entry_safe(entry, tmp, &qeth_dbf_list, dbf_list) {
5696                 list_del(&entry->dbf_list);
5697                 debug_unregister(entry->dbf_info);
5698                 kfree(entry);
5699         }
5700         mutex_unlock(&qeth_dbf_list_mutex);
5701 }
5702
5703 static int qeth_core_probe_device(struct ccwgroup_device *gdev)
5704 {
5705         struct qeth_card *card;
5706         struct device *dev;
5707         int rc;
5708         enum qeth_discipline_id enforced_disc;
5709         unsigned long flags;
5710         char dbf_name[DBF_NAME_LEN];
5711
5712         QETH_DBF_TEXT(SETUP, 2, "probedev");
5713
5714         dev = &gdev->dev;
5715         if (!get_device(dev))
5716                 return -ENODEV;
5717
5718         QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev));
5719
5720         card = qeth_alloc_card();
5721         if (!card) {
5722                 QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM);
5723                 rc = -ENOMEM;
5724                 goto err_dev;
5725         }
5726
5727         snprintf(dbf_name, sizeof(dbf_name), "qeth_card_%s",
5728                 dev_name(&gdev->dev));
5729         card->debug = qeth_get_dbf_entry(dbf_name);
5730         if (!card->debug) {
5731                 rc = qeth_add_dbf_entry(card, dbf_name);
5732                 if (rc)
5733                         goto err_card;
5734         }
5735
5736         card->read.ccwdev  = gdev->cdev[0];
5737         card->write.ccwdev = gdev->cdev[1];
5738         card->data.ccwdev  = gdev->cdev[2];
5739         dev_set_drvdata(&gdev->dev, card);
5740         card->gdev = gdev;
5741         gdev->cdev[0]->handler = qeth_irq;
5742         gdev->cdev[1]->handler = qeth_irq;
5743         gdev->cdev[2]->handler = qeth_irq;
5744
5745         qeth_determine_card_type(card);
5746         rc = qeth_setup_card(card);
5747         if (rc) {
5748                 QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc);
5749                 goto err_card;
5750         }
5751
5752         qeth_determine_capabilities(card);
5753         enforced_disc = qeth_enforce_discipline(card);
5754         switch (enforced_disc) {
5755         case QETH_DISCIPLINE_UNDETERMINED:
5756                 gdev->dev.type = &qeth_generic_devtype;
5757                 break;
5758         default:
5759                 card->info.layer_enforced = true;
5760                 rc = qeth_core_load_discipline(card, enforced_disc);
5761                 if (rc)
5762                         goto err_card;
5763
5764                 gdev->dev.type = (card->info.type != QETH_CARD_TYPE_OSN)
5765                                         ? card->discipline->devtype
5766                                         : &qeth_osn_devtype;
5767                 rc = card->discipline->setup(card->gdev);
5768                 if (rc)
5769                         goto err_disc;
5770                 break;
5771         }
5772
5773         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5774         list_add_tail(&card->list, &qeth_core_card_list.list);
5775         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5776         return 0;
5777
5778 err_disc:
5779         qeth_core_free_discipline(card);
5780 err_card:
5781         qeth_core_free_card(card);
5782 err_dev:
5783         put_device(dev);
5784         return rc;
5785 }
5786
5787 static void qeth_core_remove_device(struct ccwgroup_device *gdev)
5788 {
5789         unsigned long flags;
5790         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5791
5792         QETH_DBF_TEXT(SETUP, 2, "removedv");
5793
5794         if (card->discipline) {
5795                 card->discipline->remove(gdev);
5796                 qeth_core_free_discipline(card);
5797         }
5798
5799         write_lock_irqsave(&qeth_core_card_list.rwlock, flags);
5800         list_del(&card->list);
5801         write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags);
5802         qeth_core_free_card(card);
5803         dev_set_drvdata(&gdev->dev, NULL);
5804         put_device(&gdev->dev);
5805         return;
5806 }
5807
5808 static int qeth_core_set_online(struct ccwgroup_device *gdev)
5809 {
5810         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5811         int rc = 0;
5812         enum qeth_discipline_id def_discipline;
5813
5814         if (!card->discipline) {
5815                 if (card->info.type == QETH_CARD_TYPE_IQD)
5816                         def_discipline = QETH_DISCIPLINE_LAYER3;
5817                 else
5818                         def_discipline = QETH_DISCIPLINE_LAYER2;
5819                 rc = qeth_core_load_discipline(card, def_discipline);
5820                 if (rc)
5821                         goto err;
5822                 rc = card->discipline->setup(card->gdev);
5823                 if (rc) {
5824                         qeth_core_free_discipline(card);
5825                         goto err;
5826                 }
5827         }
5828         rc = card->discipline->set_online(gdev);
5829 err:
5830         return rc;
5831 }
5832
5833 static int qeth_core_set_offline(struct ccwgroup_device *gdev)
5834 {
5835         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5836         return card->discipline->set_offline(gdev);
5837 }
5838
5839 static void qeth_core_shutdown(struct ccwgroup_device *gdev)
5840 {
5841         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5842         qeth_set_allowed_threads(card, 0, 1);
5843         if ((gdev->state == CCWGROUP_ONLINE) && card->info.hwtrap)
5844                 qeth_hw_trap(card, QETH_DIAGS_TRAP_DISARM);
5845         qeth_qdio_clear_card(card, 0);
5846         qeth_clear_qdio_buffers(card);
5847         qdio_free(CARD_DDEV(card));
5848 }
5849
5850 static int qeth_core_freeze(struct ccwgroup_device *gdev)
5851 {
5852         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5853         if (card->discipline && card->discipline->freeze)
5854                 return card->discipline->freeze(gdev);
5855         return 0;
5856 }
5857
5858 static int qeth_core_thaw(struct ccwgroup_device *gdev)
5859 {
5860         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5861         if (card->discipline && card->discipline->thaw)
5862                 return card->discipline->thaw(gdev);
5863         return 0;
5864 }
5865
5866 static int qeth_core_restore(struct ccwgroup_device *gdev)
5867 {
5868         struct qeth_card *card = dev_get_drvdata(&gdev->dev);
5869         if (card->discipline && card->discipline->restore)
5870                 return card->discipline->restore(gdev);
5871         return 0;
5872 }
5873
5874 static struct ccwgroup_driver qeth_core_ccwgroup_driver = {
5875         .driver = {
5876                 .owner = THIS_MODULE,
5877                 .name = "qeth",
5878         },
5879         .ccw_driver = &qeth_ccw_driver,
5880         .setup = qeth_core_probe_device,
5881         .remove = qeth_core_remove_device,
5882         .set_online = qeth_core_set_online,
5883         .set_offline = qeth_core_set_offline,
5884         .shutdown = qeth_core_shutdown,
5885         .prepare = NULL,
5886         .complete = NULL,
5887         .freeze = qeth_core_freeze,
5888         .thaw = qeth_core_thaw,
5889         .restore = qeth_core_restore,
5890 };
5891
5892 static ssize_t group_store(struct device_driver *ddrv, const char *buf,
5893                            size_t count)
5894 {
5895         int err;
5896
5897         err = ccwgroup_create_dev(qeth_core_root_dev,
5898                                   &qeth_core_ccwgroup_driver, 3, buf);
5899
5900         return err ? err : count;
5901 }
5902 static DRIVER_ATTR_WO(group);
5903
5904 static struct attribute *qeth_drv_attrs[] = {
5905         &driver_attr_group.attr,
5906         NULL,
5907 };
5908 static struct attribute_group qeth_drv_attr_group = {
5909         .attrs = qeth_drv_attrs,
5910 };
5911 static const struct attribute_group *qeth_drv_attr_groups[] = {
5912         &qeth_drv_attr_group,
5913         NULL,
5914 };
5915
5916 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
5917 {
5918         struct qeth_card *card = dev->ml_priv;
5919         struct mii_ioctl_data *mii_data;
5920         int rc = 0;
5921
5922         if (!card)
5923                 return -ENODEV;
5924
5925         if (!qeth_card_hw_is_reachable(card))
5926                 return -ENODEV;
5927
5928         if (card->info.type == QETH_CARD_TYPE_OSN)
5929                 return -EPERM;
5930
5931         switch (cmd) {
5932         case SIOC_QETH_ADP_SET_SNMP_CONTROL:
5933                 rc = qeth_snmp_command(card, rq->ifr_ifru.ifru_data);
5934                 break;
5935         case SIOC_QETH_GET_CARD_TYPE:
5936                 if ((card->info.type == QETH_CARD_TYPE_OSD ||
5937                      card->info.type == QETH_CARD_TYPE_OSM ||
5938                      card->info.type == QETH_CARD_TYPE_OSX) &&
5939                     !card->info.guestlan)
5940                         return 1;
5941                 else
5942                         return 0;
5943         case SIOCGMIIPHY:
5944                 mii_data = if_mii(rq);
5945                 mii_data->phy_id = 0;
5946                 break;
5947         case SIOCGMIIREG:
5948                 mii_data = if_mii(rq);
5949                 if (mii_data->phy_id != 0)
5950                         rc = -EINVAL;
5951                 else
5952                         mii_data->val_out = qeth_mdio_read(dev,
5953                                 mii_data->phy_id, mii_data->reg_num);
5954                 break;
5955         case SIOC_QETH_QUERY_OAT:
5956                 rc = qeth_query_oat_command(card, rq->ifr_ifru.ifru_data);
5957                 break;
5958         default:
5959                 if (card->discipline->do_ioctl)
5960                         rc = card->discipline->do_ioctl(dev, rq, cmd);
5961                 else
5962                         rc = -EOPNOTSUPP;
5963         }
5964         if (rc)
5965                 QETH_CARD_TEXT_(card, 2, "ioce%x", rc);
5966         return rc;
5967 }
5968 EXPORT_SYMBOL_GPL(qeth_do_ioctl);
5969
5970 static struct {
5971         const char str[ETH_GSTRING_LEN];
5972 } qeth_ethtool_stats_keys[] = {
5973 /*  0 */{"rx skbs"},
5974         {"rx buffers"},
5975         {"tx skbs"},
5976         {"tx buffers"},
5977         {"tx skbs no packing"},
5978         {"tx buffers no packing"},
5979         {"tx skbs packing"},
5980         {"tx buffers packing"},
5981         {"tx sg skbs"},
5982         {"tx sg frags"},
5983 /* 10 */{"rx sg skbs"},
5984         {"rx sg frags"},
5985         {"rx sg page allocs"},
5986         {"tx large kbytes"},
5987         {"tx large count"},
5988         {"tx pk state ch n->p"},
5989         {"tx pk state ch p->n"},
5990         {"tx pk watermark low"},
5991         {"tx pk watermark high"},
5992         {"queue 0 buffer usage"},
5993 /* 20 */{"queue 1 buffer usage"},
5994         {"queue 2 buffer usage"},
5995         {"queue 3 buffer usage"},
5996         {"rx poll time"},
5997         {"rx poll count"},
5998         {"rx do_QDIO time"},
5999         {"rx do_QDIO count"},
6000         {"tx handler time"},
6001         {"tx handler count"},
6002         {"tx time"},
6003 /* 30 */{"tx count"},
6004         {"tx do_QDIO time"},
6005         {"tx do_QDIO count"},
6006         {"tx csum"},
6007         {"tx lin"},
6008         {"tx linfail"},
6009         {"cq handler count"},
6010         {"cq handler time"}
6011 };
6012
6013 int qeth_core_get_sset_count(struct net_device *dev, int stringset)
6014 {
6015         switch (stringset) {
6016         case ETH_SS_STATS:
6017                 return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN);
6018         default:
6019                 return -EINVAL;
6020         }
6021 }
6022 EXPORT_SYMBOL_GPL(qeth_core_get_sset_count);
6023
6024 void qeth_core_get_ethtool_stats(struct net_device *dev,
6025                 struct ethtool_stats *stats, u64 *data)
6026 {
6027         struct qeth_card *card = dev->ml_priv;
6028         data[0] = card->stats.rx_packets -
6029                                 card->perf_stats.initial_rx_packets;
6030         data[1] = card->perf_stats.bufs_rec;
6031         data[2] = card->stats.tx_packets -
6032                                 card->perf_stats.initial_tx_packets;
6033         data[3] = card->perf_stats.bufs_sent;
6034         data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets
6035                         - card->perf_stats.skbs_sent_pack;
6036         data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack;
6037         data[6] = card->perf_stats.skbs_sent_pack;
6038         data[7] = card->perf_stats.bufs_sent_pack;
6039         data[8] = card->perf_stats.sg_skbs_sent;
6040         data[9] = card->perf_stats.sg_frags_sent;
6041         data[10] = card->perf_stats.sg_skbs_rx;
6042         data[11] = card->perf_stats.sg_frags_rx;
6043         data[12] = card->perf_stats.sg_alloc_page_rx;
6044         data[13] = (card->perf_stats.large_send_bytes >> 10);
6045         data[14] = card->perf_stats.large_send_cnt;
6046         data[15] = card->perf_stats.sc_dp_p;
6047         data[16] = card->perf_stats.sc_p_dp;
6048         data[17] = QETH_LOW_WATERMARK_PACK;
6049         data[18] = QETH_HIGH_WATERMARK_PACK;
6050         data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers);
6051         data[20] = (card->qdio.no_out_queues > 1) ?
6052                         atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0;
6053         data[21] = (card->qdio.no_out_queues > 2) ?
6054                         atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0;
6055         data[22] = (card->qdio.no_out_queues > 3) ?
6056                         atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0;
6057         data[23] = card->perf_stats.inbound_time;
6058         data[24] = card->perf_stats.inbound_cnt;
6059         data[25] = card->perf_stats.inbound_do_qdio_time;
6060         data[26] = card->perf_stats.inbound_do_qdio_cnt;
6061         data[27] = card->perf_stats.outbound_handler_time;
6062         data[28] = card->perf_stats.outbound_handler_cnt;
6063         data[29] = card->perf_stats.outbound_time;
6064         data[30] = card->perf_stats.outbound_cnt;
6065         data[31] = card->perf_stats.outbound_do_qdio_time;
6066         data[32] = card->perf_stats.outbound_do_qdio_cnt;
6067         data[33] = card->perf_stats.tx_csum;
6068         data[34] = card->perf_stats.tx_lin;
6069         data[35] = card->perf_stats.tx_linfail;
6070         data[36] = card->perf_stats.cq_cnt;
6071         data[37] = card->perf_stats.cq_time;
6072 }
6073 EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats);
6074
6075 void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data)
6076 {
6077         switch (stringset) {
6078         case ETH_SS_STATS:
6079                 memcpy(data, &qeth_ethtool_stats_keys,
6080                         sizeof(qeth_ethtool_stats_keys));
6081                 break;
6082         default:
6083                 WARN_ON(1);
6084                 break;
6085         }
6086 }
6087 EXPORT_SYMBOL_GPL(qeth_core_get_strings);
6088
6089 void qeth_core_get_drvinfo(struct net_device *dev,
6090                 struct ethtool_drvinfo *info)
6091 {
6092         struct qeth_card *card = dev->ml_priv;
6093
6094         strlcpy(info->driver, card->options.layer2 ? "qeth_l2" : "qeth_l3",
6095                 sizeof(info->driver));
6096         strlcpy(info->version, "1.0", sizeof(info->version));
6097         strlcpy(info->fw_version, card->info.mcl_level,
6098                 sizeof(info->fw_version));
6099         snprintf(info->bus_info, sizeof(info->bus_info), "%s/%s/%s",
6100                  CARD_RDEV_ID(card), CARD_WDEV_ID(card), CARD_DDEV_ID(card));
6101 }
6102 EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo);
6103
6104 /* Helper function to fill 'advertising' and 'supported' which are the same. */
6105 /* Autoneg and full-duplex are supported and advertised unconditionally.     */
6106 /* Always advertise and support all speeds up to specified, and only one     */
6107 /* specified port type.                                                      */
6108 static void qeth_set_cmd_adv_sup(struct ethtool_link_ksettings *cmd,
6109                                 int maxspeed, int porttype)
6110 {
6111         ethtool_link_ksettings_zero_link_mode(cmd, supported);
6112         ethtool_link_ksettings_zero_link_mode(cmd, advertising);
6113         ethtool_link_ksettings_zero_link_mode(cmd, lp_advertising);
6114
6115         ethtool_link_ksettings_add_link_mode(cmd, supported, Autoneg);
6116         ethtool_link_ksettings_add_link_mode(cmd, advertising, Autoneg);
6117
6118         switch (porttype) {
6119         case PORT_TP:
6120                 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6121                 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6122                 break;
6123         case PORT_FIBRE:
6124                 ethtool_link_ksettings_add_link_mode(cmd, supported, FIBRE);
6125                 ethtool_link_ksettings_add_link_mode(cmd, advertising, FIBRE);
6126                 break;
6127         default:
6128                 ethtool_link_ksettings_add_link_mode(cmd, supported, TP);
6129                 ethtool_link_ksettings_add_link_mode(cmd, advertising, TP);
6130                 WARN_ON_ONCE(1);
6131         }
6132
6133         /* fallthrough from high to low, to select all legal speeds: */
6134         switch (maxspeed) {
6135         case SPEED_10000:
6136                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6137                                                      10000baseT_Full);
6138                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6139                                                      10000baseT_Full);
6140         case SPEED_1000:
6141                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6142                                                      1000baseT_Full);
6143                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6144                                                      1000baseT_Full);
6145                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6146                                                      1000baseT_Half);
6147                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6148                                                      1000baseT_Half);
6149         case SPEED_100:
6150                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6151                                                      100baseT_Full);
6152                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6153                                                      100baseT_Full);
6154                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6155                                                      100baseT_Half);
6156                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6157                                                      100baseT_Half);
6158         case SPEED_10:
6159                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6160                                                      10baseT_Full);
6161                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6162                                                      10baseT_Full);
6163                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6164                                                      10baseT_Half);
6165                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6166                                                      10baseT_Half);
6167                 /* end fallthrough */
6168                 break;
6169         default:
6170                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6171                                                      10baseT_Full);
6172                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6173                                                      10baseT_Full);
6174                 ethtool_link_ksettings_add_link_mode(cmd, supported,
6175                                                      10baseT_Half);
6176                 ethtool_link_ksettings_add_link_mode(cmd, advertising,
6177                                                      10baseT_Half);
6178                 WARN_ON_ONCE(1);
6179         }
6180 }
6181
6182 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev,
6183                 struct ethtool_link_ksettings *cmd)
6184 {
6185         struct qeth_card *card = netdev->ml_priv;
6186         enum qeth_link_types link_type;
6187         struct carrier_info carrier_info;
6188         int rc;
6189
6190         if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan))
6191                 link_type = QETH_LINK_TYPE_10GBIT_ETH;
6192         else
6193                 link_type = card->info.link_type;
6194
6195         cmd->base.duplex = DUPLEX_FULL;
6196         cmd->base.autoneg = AUTONEG_ENABLE;
6197         cmd->base.phy_address = 0;
6198         cmd->base.mdio_support = 0;
6199         cmd->base.eth_tp_mdix = ETH_TP_MDI_INVALID;
6200         cmd->base.eth_tp_mdix_ctrl = ETH_TP_MDI_INVALID;
6201
6202         switch (link_type) {
6203         case QETH_LINK_TYPE_FAST_ETH:
6204         case QETH_LINK_TYPE_LANE_ETH100:
6205                 cmd->base.speed = SPEED_100;
6206                 cmd->base.port = PORT_TP;
6207                 break;
6208         case QETH_LINK_TYPE_GBIT_ETH:
6209         case QETH_LINK_TYPE_LANE_ETH1000:
6210                 cmd->base.speed = SPEED_1000;
6211                 cmd->base.port = PORT_FIBRE;
6212                 break;
6213         case QETH_LINK_TYPE_10GBIT_ETH:
6214                 cmd->base.speed = SPEED_10000;
6215                 cmd->base.port = PORT_FIBRE;
6216                 break;
6217         default:
6218                 cmd->base.speed = SPEED_10;
6219                 cmd->base.port = PORT_TP;
6220         }
6221         qeth_set_cmd_adv_sup(cmd, cmd->base.speed, cmd->base.port);
6222
6223         /* Check if we can obtain more accurate information.     */
6224         /* If QUERY_CARD_INFO command is not supported or fails, */
6225         /* just return the heuristics that was filled above.     */
6226         if (!qeth_card_hw_is_reachable(card))
6227                 return -ENODEV;
6228         rc = qeth_query_card_info(card, &carrier_info);
6229         if (rc == -EOPNOTSUPP) /* for old hardware, return heuristic */
6230                 return 0;
6231         if (rc) /* report error from the hardware operation */
6232                 return rc;
6233         /* on success, fill in the information got from the hardware */
6234
6235         netdev_dbg(netdev,
6236         "card info: card_type=0x%02x, port_mode=0x%04x, port_speed=0x%08x\n",
6237                         carrier_info.card_type,
6238                         carrier_info.port_mode,
6239                         carrier_info.port_speed);
6240
6241         /* Update attributes for which we've obtained more authoritative */
6242         /* information, leave the rest the way they where filled above.  */
6243         switch (carrier_info.card_type) {
6244         case CARD_INFO_TYPE_1G_COPPER_A:
6245         case CARD_INFO_TYPE_1G_COPPER_B:
6246                 cmd->base.port = PORT_TP;
6247                 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6248                 break;
6249         case CARD_INFO_TYPE_1G_FIBRE_A:
6250         case CARD_INFO_TYPE_1G_FIBRE_B:
6251                 cmd->base.port = PORT_FIBRE;
6252                 qeth_set_cmd_adv_sup(cmd, SPEED_1000, cmd->base.port);
6253                 break;
6254         case CARD_INFO_TYPE_10G_FIBRE_A:
6255         case CARD_INFO_TYPE_10G_FIBRE_B:
6256                 cmd->base.port = PORT_FIBRE;
6257                 qeth_set_cmd_adv_sup(cmd, SPEED_10000, cmd->base.port);
6258                 break;
6259         }
6260
6261         switch (carrier_info.port_mode) {
6262         case CARD_INFO_PORTM_FULLDUPLEX:
6263                 cmd->base.duplex = DUPLEX_FULL;
6264                 break;
6265         case CARD_INFO_PORTM_HALFDUPLEX:
6266                 cmd->base.duplex = DUPLEX_HALF;
6267                 break;
6268         }
6269
6270         switch (carrier_info.port_speed) {
6271         case CARD_INFO_PORTS_10M:
6272                 cmd->base.speed = SPEED_10;
6273                 break;
6274         case CARD_INFO_PORTS_100M:
6275                 cmd->base.speed = SPEED_100;
6276                 break;
6277         case CARD_INFO_PORTS_1G:
6278                 cmd->base.speed = SPEED_1000;
6279                 break;
6280         case CARD_INFO_PORTS_10G:
6281                 cmd->base.speed = SPEED_10000;
6282                 break;
6283         }
6284
6285         return 0;
6286 }
6287 EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_link_ksettings);
6288
6289 /* Callback to handle checksum offload command reply from OSA card.
6290  * Verify that required features have been enabled on the card.
6291  * Return error in hdr->return_code as this value is checked by caller.
6292  *
6293  * Always returns zero to indicate no further messages from the OSA card.
6294  */
6295 static int qeth_ipa_checksum_run_cmd_cb(struct qeth_card *card,
6296                                         struct qeth_reply *reply,
6297                                         unsigned long data)
6298 {
6299         struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
6300         struct qeth_checksum_cmd *chksum_cb =
6301                                 (struct qeth_checksum_cmd *)reply->param;
6302
6303         QETH_CARD_TEXT(card, 4, "chkdoccb");
6304         if (qeth_setassparms_inspect_rc(cmd))
6305                 return 0;
6306
6307         memset(chksum_cb, 0, sizeof(*chksum_cb));
6308         if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_START) {
6309                 chksum_cb->supported =
6310                                 cmd->data.setassparms.data.chksum.supported;
6311                 QETH_CARD_TEXT_(card, 3, "strt:%x", chksum_cb->supported);
6312         }
6313         if (cmd->data.setassparms.hdr.command_code == IPA_CMD_ASS_ENABLE) {
6314                 chksum_cb->supported =
6315                                 cmd->data.setassparms.data.chksum.supported;
6316                 chksum_cb->enabled =
6317                                 cmd->data.setassparms.data.chksum.enabled;
6318                 QETH_CARD_TEXT_(card, 3, "supp:%x", chksum_cb->supported);
6319                 QETH_CARD_TEXT_(card, 3, "enab:%x", chksum_cb->enabled);
6320         }
6321         return 0;
6322 }
6323
6324 /* Send command to OSA card and check results. */
6325 static int qeth_ipa_checksum_run_cmd(struct qeth_card *card,
6326                                      enum qeth_ipa_funcs ipa_func,
6327                                      __u16 cmd_code, long data,
6328                                      struct qeth_checksum_cmd *chksum_cb)
6329 {
6330         struct qeth_cmd_buffer *iob;
6331         int rc = -ENOMEM;
6332
6333         QETH_CARD_TEXT(card, 4, "chkdocmd");
6334         iob = qeth_get_setassparms_cmd(card, ipa_func, cmd_code,
6335                                        sizeof(__u32), QETH_PROT_IPV4);
6336         if (iob)
6337                 rc = qeth_send_setassparms(card, iob, sizeof(__u32), data,
6338                                            qeth_ipa_checksum_run_cmd_cb,
6339                                            chksum_cb);
6340         return rc;
6341 }
6342
6343 static int qeth_send_checksum_on(struct qeth_card *card, int cstype)
6344 {
6345         const __u32 required_features = QETH_IPA_CHECKSUM_IP_HDR |
6346                                         QETH_IPA_CHECKSUM_UDP |
6347                                         QETH_IPA_CHECKSUM_TCP;
6348         struct qeth_checksum_cmd chksum_cb;
6349         int rc;
6350
6351         rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_START, 0,
6352                                        &chksum_cb);
6353         if (!rc) {
6354                 if ((required_features & chksum_cb.supported) !=
6355                     required_features)
6356                         rc = -EIO;
6357                 else if (!(QETH_IPA_CHECKSUM_LP2LP & chksum_cb.supported) &&
6358                          cstype == IPA_INBOUND_CHECKSUM)
6359                         dev_warn(&card->gdev->dev,
6360                                  "Hardware checksumming is performed only if %s and its peer use different OSA Express 3 ports\n",
6361                                  QETH_CARD_IFNAME(card));
6362         }
6363         if (rc) {
6364                 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0);
6365                 dev_warn(&card->gdev->dev,
6366                          "Starting HW checksumming for %s failed, using SW checksumming\n",
6367                          QETH_CARD_IFNAME(card));
6368                 return rc;
6369         }
6370         rc = qeth_ipa_checksum_run_cmd(card, cstype, IPA_CMD_ASS_ENABLE,
6371                                        chksum_cb.supported, &chksum_cb);
6372         if (!rc) {
6373                 if ((required_features & chksum_cb.enabled) !=
6374                     required_features)
6375                         rc = -EIO;
6376         }
6377         if (rc) {
6378                 qeth_send_simple_setassparms(card, cstype, IPA_CMD_ASS_STOP, 0);
6379                 dev_warn(&card->gdev->dev,
6380                          "Enabling HW checksumming for %s failed, using SW checksumming\n",
6381                          QETH_CARD_IFNAME(card));
6382                 return rc;
6383         }
6384
6385         dev_info(&card->gdev->dev, "HW Checksumming (%sbound) enabled\n",
6386                  cstype == IPA_INBOUND_CHECKSUM ? "in" : "out");
6387         return 0;
6388 }
6389
6390 static int qeth_set_ipa_csum(struct qeth_card *card, int on, int cstype)
6391 {
6392         int rc = (on) ? qeth_send_checksum_on(card, cstype)
6393                       : qeth_send_simple_setassparms(card, cstype,
6394                                                      IPA_CMD_ASS_STOP, 0);
6395         return rc ? -EIO : 0;
6396 }
6397
6398 static int qeth_set_ipa_tso(struct qeth_card *card, int on)
6399 {
6400         int rc;
6401
6402         QETH_CARD_TEXT(card, 3, "sttso");
6403
6404         if (on) {
6405                 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6406                                                   IPA_CMD_ASS_START, 0);
6407                 if (rc) {
6408                         dev_warn(&card->gdev->dev,
6409                                  "Starting outbound TCP segmentation offload for %s failed\n",
6410                                  QETH_CARD_IFNAME(card));
6411                         return -EIO;
6412                 }
6413                 dev_info(&card->gdev->dev, "Outbound TSO enabled\n");
6414         } else {
6415                 rc = qeth_send_simple_setassparms(card, IPA_OUTBOUND_TSO,
6416                                                   IPA_CMD_ASS_STOP, 0);
6417         }
6418         return rc;
6419 }
6420
6421 #define QETH_HW_FEATURES (NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_TSO)
6422
6423 /**
6424  * qeth_recover_features() - Restore device features after recovery
6425  * @dev:        the recovering net_device
6426  *
6427  * Caller must hold rtnl lock.
6428  */
6429 void qeth_recover_features(struct net_device *dev)
6430 {
6431         netdev_features_t features = dev->features;
6432         struct qeth_card *card = dev->ml_priv;
6433
6434         /* force-off any feature that needs an IPA sequence.
6435          * netdev_update_features() will restart them.
6436          */
6437         dev->features &= ~QETH_HW_FEATURES;
6438         netdev_update_features(dev);
6439
6440         if (features == dev->features)
6441                 return;
6442         dev_warn(&card->gdev->dev,
6443                  "Device recovery failed to restore all offload features\n");
6444 }
6445 EXPORT_SYMBOL_GPL(qeth_recover_features);
6446
6447 int qeth_set_features(struct net_device *dev, netdev_features_t features)
6448 {
6449         struct qeth_card *card = dev->ml_priv;
6450         netdev_features_t changed = dev->features ^ features;
6451         int rc = 0;
6452
6453         QETH_DBF_TEXT(SETUP, 2, "setfeat");
6454         QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6455
6456         if ((changed & NETIF_F_IP_CSUM)) {
6457                 rc = qeth_set_ipa_csum(card,
6458                                        features & NETIF_F_IP_CSUM ? 1 : 0,
6459                                        IPA_OUTBOUND_CHECKSUM);
6460                 if (rc)
6461                         changed ^= NETIF_F_IP_CSUM;
6462         }
6463         if ((changed & NETIF_F_RXCSUM)) {
6464                 rc = qeth_set_ipa_csum(card,
6465                                         features & NETIF_F_RXCSUM ? 1 : 0,
6466                                         IPA_INBOUND_CHECKSUM);
6467                 if (rc)
6468                         changed ^= NETIF_F_RXCSUM;
6469         }
6470         if ((changed & NETIF_F_TSO)) {
6471                 rc = qeth_set_ipa_tso(card, features & NETIF_F_TSO ? 1 : 0);
6472                 if (rc)
6473                         changed ^= NETIF_F_TSO;
6474         }
6475
6476         /* everything changed successfully? */
6477         if ((dev->features ^ features) == changed)
6478                 return 0;
6479         /* something went wrong. save changed features and return error */
6480         dev->features ^= changed;
6481         return -EIO;
6482 }
6483 EXPORT_SYMBOL_GPL(qeth_set_features);
6484
6485 netdev_features_t qeth_fix_features(struct net_device *dev,
6486                                     netdev_features_t features)
6487 {
6488         struct qeth_card *card = dev->ml_priv;
6489
6490         QETH_DBF_TEXT(SETUP, 2, "fixfeat");
6491         if (!qeth_is_supported(card, IPA_OUTBOUND_CHECKSUM))
6492                 features &= ~NETIF_F_IP_CSUM;
6493         if (!qeth_is_supported(card, IPA_INBOUND_CHECKSUM))
6494                 features &= ~NETIF_F_RXCSUM;
6495         if (!qeth_is_supported(card, IPA_OUTBOUND_TSO))
6496                 features &= ~NETIF_F_TSO;
6497         /* if the card isn't up, remove features that require hw changes */
6498         if (card->state == CARD_STATE_DOWN ||
6499             card->state == CARD_STATE_RECOVER)
6500                 features &= ~QETH_HW_FEATURES;
6501         QETH_DBF_HEX(SETUP, 2, &features, sizeof(features));
6502         return features;
6503 }
6504 EXPORT_SYMBOL_GPL(qeth_fix_features);
6505
6506 netdev_features_t qeth_features_check(struct sk_buff *skb,
6507                                       struct net_device *dev,
6508                                       netdev_features_t features)
6509 {
6510         /* GSO segmentation builds skbs with
6511          *      a (small) linear part for the headers, and
6512          *      page frags for the data.
6513          * Compared to a linear skb, the header-only part consumes an
6514          * additional buffer element. This reduces buffer utilization, and
6515          * hurts throughput. So compress small segments into one element.
6516          */
6517         if (netif_needs_gso(skb, features)) {
6518                 /* match skb_segment(): */
6519                 unsigned int doffset = skb->data - skb_mac_header(skb);
6520                 unsigned int hsize = skb_shinfo(skb)->gso_size;
6521                 unsigned int hroom = skb_headroom(skb);
6522
6523                 /* linearize only if resulting skb allocations are order-0: */
6524                 if (SKB_DATA_ALIGN(hroom + doffset + hsize) <= SKB_MAX_HEAD(0))
6525                         features &= ~NETIF_F_SG;
6526         }
6527
6528         return vlan_features_check(skb, features);
6529 }
6530 EXPORT_SYMBOL_GPL(qeth_features_check);
6531
6532 static int __init qeth_core_init(void)
6533 {
6534         int rc;
6535
6536         pr_info("loading core functions\n");
6537         INIT_LIST_HEAD(&qeth_core_card_list.list);
6538         INIT_LIST_HEAD(&qeth_dbf_list);
6539         rwlock_init(&qeth_core_card_list.rwlock);
6540         mutex_init(&qeth_mod_mutex);
6541
6542         qeth_wq = create_singlethread_workqueue("qeth_wq");
6543         if (!qeth_wq) {
6544                 rc = -ENOMEM;
6545                 goto out_err;
6546         }
6547
6548         rc = qeth_register_dbf_views();
6549         if (rc)
6550                 goto dbf_err;
6551         qeth_core_root_dev = root_device_register("qeth");
6552         rc = PTR_ERR_OR_ZERO(qeth_core_root_dev);
6553         if (rc)
6554                 goto register_err;
6555         qeth_core_header_cache = kmem_cache_create("qeth_hdr",
6556                         sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL);
6557         if (!qeth_core_header_cache) {
6558                 rc = -ENOMEM;
6559                 goto slab_err;
6560         }
6561         qeth_qdio_outbuf_cache = kmem_cache_create("qeth_buf",
6562                         sizeof(struct qeth_qdio_out_buffer), 0, 0, NULL);
6563         if (!qeth_qdio_outbuf_cache) {
6564                 rc = -ENOMEM;
6565                 goto cqslab_err;
6566         }
6567         rc = ccw_driver_register(&qeth_ccw_driver);
6568         if (rc)
6569                 goto ccw_err;
6570         qeth_core_ccwgroup_driver.driver.groups = qeth_drv_attr_groups;
6571         rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver);
6572         if (rc)
6573                 goto ccwgroup_err;
6574
6575         return 0;
6576
6577 ccwgroup_err:
6578         ccw_driver_unregister(&qeth_ccw_driver);
6579 ccw_err:
6580         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6581 cqslab_err:
6582         kmem_cache_destroy(qeth_core_header_cache);
6583 slab_err:
6584         root_device_unregister(qeth_core_root_dev);
6585 register_err:
6586         qeth_unregister_dbf_views();
6587 dbf_err:
6588         destroy_workqueue(qeth_wq);
6589 out_err:
6590         pr_err("Initializing the qeth device driver failed\n");
6591         return rc;
6592 }
6593
6594 static void __exit qeth_core_exit(void)
6595 {
6596         qeth_clear_dbf_list();
6597         destroy_workqueue(qeth_wq);
6598         ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver);
6599         ccw_driver_unregister(&qeth_ccw_driver);
6600         kmem_cache_destroy(qeth_qdio_outbuf_cache);
6601         kmem_cache_destroy(qeth_core_header_cache);
6602         root_device_unregister(qeth_core_root_dev);
6603         qeth_unregister_dbf_views();
6604         pr_info("core functions removed\n");
6605 }
6606
6607 module_init(qeth_core_init);
6608 module_exit(qeth_core_exit);
6609 MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>");
6610 MODULE_DESCRIPTION("qeth core functions");
6611 MODULE_LICENSE("GPL");