2 * Disk Array driver for HP Smart Array SAS controllers
3 * Copyright 2014-2015 PMC-Sierra, Inc.
4 * Copyright 2000,2009-2015 Hewlett-Packard Development Company, L.P.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
13 * NON INFRINGEMENT. See the GNU General Public License for more details.
15 * Questions/Comments/Bugfixes to storagedev@pmcs.com
19 #include <linux/module.h>
20 #include <linux/interrupt.h>
21 #include <linux/types.h>
22 #include <linux/pci.h>
23 #include <linux/pci-aspm.h>
24 #include <linux/kernel.h>
25 #include <linux/slab.h>
26 #include <linux/delay.h>
28 #include <linux/timer.h>
29 #include <linux/init.h>
30 #include <linux/spinlock.h>
31 #include <linux/compat.h>
32 #include <linux/blktrace_api.h>
33 #include <linux/uaccess.h>
35 #include <linux/dma-mapping.h>
36 #include <linux/completion.h>
37 #include <linux/moduleparam.h>
38 #include <scsi/scsi.h>
39 #include <scsi/scsi_cmnd.h>
40 #include <scsi/scsi_device.h>
41 #include <scsi/scsi_host.h>
42 #include <scsi/scsi_tcq.h>
43 #include <scsi/scsi_eh.h>
44 #include <scsi/scsi_dbg.h>
45 #include <linux/cciss_ioctl.h>
46 #include <linux/string.h>
47 #include <linux/bitmap.h>
48 #include <linux/atomic.h>
49 #include <linux/jiffies.h>
50 #include <linux/percpu-defs.h>
51 #include <linux/percpu.h>
52 #include <asm/unaligned.h>
53 #include <asm/div64.h>
57 /* HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' */
58 #define HPSA_DRIVER_VERSION "3.4.10-0"
59 #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")"
62 /* How long to wait for CISS doorbell communication */
63 #define CLEAR_EVENT_WAIT_INTERVAL 20 /* ms for each msleep() call */
64 #define MODE_CHANGE_WAIT_INTERVAL 10 /* ms for each msleep() call */
65 #define MAX_CLEAR_EVENT_WAIT 30000 /* times 20 ms = 600 s */
66 #define MAX_MODE_CHANGE_WAIT 2000 /* times 10 ms = 20 s */
67 #define MAX_IOCTL_CONFIG_WAIT 1000
69 /*define how many times we will try a command because of bus resets */
70 #define MAX_CMD_RETRIES 3
72 /* Embedded module documentation macros - see modules.h */
73 MODULE_AUTHOR("Hewlett-Packard Company");
74 MODULE_DESCRIPTION("Driver for HP Smart Array Controller version " \
76 MODULE_SUPPORTED_DEVICE("HP Smart Array Controllers");
77 MODULE_VERSION(HPSA_DRIVER_VERSION);
78 MODULE_LICENSE("GPL");
80 static int hpsa_allow_any;
81 module_param(hpsa_allow_any, int, S_IRUGO|S_IWUSR);
82 MODULE_PARM_DESC(hpsa_allow_any,
83 "Allow hpsa driver to access unknown HP Smart Array hardware");
84 static int hpsa_simple_mode;
85 module_param(hpsa_simple_mode, int, S_IRUGO|S_IWUSR);
86 MODULE_PARM_DESC(hpsa_simple_mode,
87 "Use 'simple mode' rather than 'performant mode'");
89 /* define the PCI info for the cards we can control */
90 static const struct pci_device_id hpsa_pci_device_id[] = {
91 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3241},
92 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3243},
93 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3245},
94 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3247},
95 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3249},
96 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324A},
97 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x324B},
98 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSE, 0x103C, 0x3233},
99 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3350},
100 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3351},
101 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3352},
102 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3353},
103 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3354},
104 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3355},
105 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSF, 0x103C, 0x3356},
106 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1921},
107 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1922},
108 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1923},
109 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1924},
110 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1926},
111 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1928},
112 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSH, 0x103C, 0x1929},
113 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BD},
114 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BE},
115 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21BF},
116 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C0},
117 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C1},
118 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C2},
119 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C3},
120 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C4},
121 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C5},
122 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C6},
123 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C7},
124 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C8},
125 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21C9},
126 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CA},
127 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CB},
128 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CC},
129 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CD},
130 {PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSI, 0x103C, 0x21CE},
131 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0580},
132 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0581},
133 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0582},
134 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0583},
135 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0584},
136 {PCI_VENDOR_ID_ADAPTEC2, 0x0290, 0x9005, 0x0585},
137 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0076},
138 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0087},
139 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x007D},
140 {PCI_VENDOR_ID_HP_3PAR, 0x0075, 0x1590, 0x0088},
141 {PCI_VENDOR_ID_HP, 0x333f, 0x103c, 0x333f},
142 {PCI_VENDOR_ID_HP, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID,
143 PCI_CLASS_STORAGE_RAID << 8, 0xffff << 8, 0},
147 MODULE_DEVICE_TABLE(pci, hpsa_pci_device_id);
149 /* board_id = Subsystem Device ID & Vendor ID
150 * product = Marketing Name for the board
151 * access = Address of the struct of function pointers
153 static struct board_type products[] = {
154 {0x3241103C, "Smart Array P212", &SA5_access},
155 {0x3243103C, "Smart Array P410", &SA5_access},
156 {0x3245103C, "Smart Array P410i", &SA5_access},
157 {0x3247103C, "Smart Array P411", &SA5_access},
158 {0x3249103C, "Smart Array P812", &SA5_access},
159 {0x324A103C, "Smart Array P712m", &SA5_access},
160 {0x324B103C, "Smart Array P711m", &SA5_access},
161 {0x3233103C, "HP StorageWorks 1210m", &SA5_access}, /* alias of 333f */
162 {0x3350103C, "Smart Array P222", &SA5_access},
163 {0x3351103C, "Smart Array P420", &SA5_access},
164 {0x3352103C, "Smart Array P421", &SA5_access},
165 {0x3353103C, "Smart Array P822", &SA5_access},
166 {0x3354103C, "Smart Array P420i", &SA5_access},
167 {0x3355103C, "Smart Array P220i", &SA5_access},
168 {0x3356103C, "Smart Array P721m", &SA5_access},
169 {0x1921103C, "Smart Array P830i", &SA5_access},
170 {0x1922103C, "Smart Array P430", &SA5_access},
171 {0x1923103C, "Smart Array P431", &SA5_access},
172 {0x1924103C, "Smart Array P830", &SA5_access},
173 {0x1926103C, "Smart Array P731m", &SA5_access},
174 {0x1928103C, "Smart Array P230i", &SA5_access},
175 {0x1929103C, "Smart Array P530", &SA5_access},
176 {0x21BD103C, "Smart Array P244br", &SA5_access},
177 {0x21BE103C, "Smart Array P741m", &SA5_access},
178 {0x21BF103C, "Smart HBA H240ar", &SA5_access},
179 {0x21C0103C, "Smart Array P440ar", &SA5_access},
180 {0x21C1103C, "Smart Array P840ar", &SA5_access},
181 {0x21C2103C, "Smart Array P440", &SA5_access},
182 {0x21C3103C, "Smart Array P441", &SA5_access},
183 {0x21C4103C, "Smart Array", &SA5_access},
184 {0x21C5103C, "Smart Array P841", &SA5_access},
185 {0x21C6103C, "Smart HBA H244br", &SA5_access},
186 {0x21C7103C, "Smart HBA H240", &SA5_access},
187 {0x21C8103C, "Smart HBA H241", &SA5_access},
188 {0x21C9103C, "Smart Array", &SA5_access},
189 {0x21CA103C, "Smart Array P246br", &SA5_access},
190 {0x21CB103C, "Smart Array P840", &SA5_access},
191 {0x21CC103C, "Smart Array", &SA5_access},
192 {0x21CD103C, "Smart Array", &SA5_access},
193 {0x21CE103C, "Smart HBA", &SA5_access},
194 {0x05809005, "SmartHBA-SA", &SA5_access},
195 {0x05819005, "SmartHBA-SA 8i", &SA5_access},
196 {0x05829005, "SmartHBA-SA 8i8e", &SA5_access},
197 {0x05839005, "SmartHBA-SA 8e", &SA5_access},
198 {0x05849005, "SmartHBA-SA 16i", &SA5_access},
199 {0x05859005, "SmartHBA-SA 4i4e", &SA5_access},
200 {0x00761590, "HP Storage P1224 Array Controller", &SA5_access},
201 {0x00871590, "HP Storage P1224e Array Controller", &SA5_access},
202 {0x007D1590, "HP Storage P1228 Array Controller", &SA5_access},
203 {0x00881590, "HP Storage P1228e Array Controller", &SA5_access},
204 {0x333f103c, "HP StorageWorks 1210m Array Controller", &SA5_access},
205 {0xFFFF103C, "Unknown Smart Array", &SA5_access},
208 #define SCSI_CMD_BUSY ((struct scsi_cmnd *)&hpsa_cmd_busy)
209 static const struct scsi_cmnd hpsa_cmd_busy;
210 #define SCSI_CMD_IDLE ((struct scsi_cmnd *)&hpsa_cmd_idle)
211 static const struct scsi_cmnd hpsa_cmd_idle;
212 static int number_of_controllers;
214 static irqreturn_t do_hpsa_intr_intx(int irq, void *dev_id);
215 static irqreturn_t do_hpsa_intr_msi(int irq, void *dev_id);
216 static int hpsa_ioctl(struct scsi_device *dev, int cmd, void __user *arg);
219 static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd,
223 static void cmd_free(struct ctlr_info *h, struct CommandList *c);
224 static struct CommandList *cmd_alloc(struct ctlr_info *h);
225 static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c);
226 static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h,
227 struct scsi_cmnd *scmd);
228 static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
229 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr,
231 static void hpsa_free_cmd_pool(struct ctlr_info *h);
232 #define VPD_PAGE (1 << 8)
234 static int hpsa_scsi_queue_command(struct Scsi_Host *h, struct scsi_cmnd *cmd);
235 static void hpsa_scan_start(struct Scsi_Host *);
236 static int hpsa_scan_finished(struct Scsi_Host *sh,
237 unsigned long elapsed_time);
238 static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth);
240 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd);
241 static int hpsa_eh_abort_handler(struct scsi_cmnd *scsicmd);
242 static int hpsa_slave_alloc(struct scsi_device *sdev);
243 static int hpsa_slave_configure(struct scsi_device *sdev);
244 static void hpsa_slave_destroy(struct scsi_device *sdev);
246 static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno);
247 static int check_for_unit_attention(struct ctlr_info *h,
248 struct CommandList *c);
249 static void check_ioctl_unit_attention(struct ctlr_info *h,
250 struct CommandList *c);
251 /* performant mode helper functions */
252 static void calc_bucket_map(int *bucket, int num_buckets,
253 int nsgs, int min_blocks, u32 *bucket_map);
254 static void hpsa_free_performant_mode(struct ctlr_info *h);
255 static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h);
256 static inline u32 next_command(struct ctlr_info *h, u8 q);
257 static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
258 u32 *cfg_base_addr, u64 *cfg_base_addr_index,
260 static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
261 unsigned long *memory_bar);
262 static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id);
263 static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr,
265 static inline void finish_cmd(struct CommandList *c);
266 static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h);
267 #define BOARD_NOT_READY 0
268 #define BOARD_READY 1
269 static void hpsa_drain_accel_commands(struct ctlr_info *h);
270 static void hpsa_flush_cache(struct ctlr_info *h);
271 static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h,
272 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
273 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk);
274 static void hpsa_command_resubmit_worker(struct work_struct *work);
275 static u32 lockup_detected(struct ctlr_info *h);
276 static int detect_controller_lockup(struct ctlr_info *h);
277 static int is_ext_target(struct ctlr_info *h, struct hpsa_scsi_dev_t *device);
279 static inline struct ctlr_info *sdev_to_hba(struct scsi_device *sdev)
281 unsigned long *priv = shost_priv(sdev->host);
282 return (struct ctlr_info *) *priv;
285 static inline struct ctlr_info *shost_to_hba(struct Scsi_Host *sh)
287 unsigned long *priv = shost_priv(sh);
288 return (struct ctlr_info *) *priv;
291 static inline bool hpsa_is_cmd_idle(struct CommandList *c)
293 return c->scsi_cmd == SCSI_CMD_IDLE;
296 static inline bool hpsa_is_pending_event(struct CommandList *c)
298 return c->abort_pending || c->reset_pending;
301 /* extract sense key, asc, and ascq from sense data. -1 means invalid. */
302 static void decode_sense_data(const u8 *sense_data, int sense_data_len,
303 u8 *sense_key, u8 *asc, u8 *ascq)
305 struct scsi_sense_hdr sshdr;
312 if (sense_data_len < 1)
315 rc = scsi_normalize_sense(sense_data, sense_data_len, &sshdr);
317 *sense_key = sshdr.sense_key;
323 static int check_for_unit_attention(struct ctlr_info *h,
324 struct CommandList *c)
326 u8 sense_key, asc, ascq;
329 if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo))
330 sense_len = sizeof(c->err_info->SenseInfo);
332 sense_len = c->err_info->SenseLen;
334 decode_sense_data(c->err_info->SenseInfo, sense_len,
335 &sense_key, &asc, &ascq);
336 if (sense_key != UNIT_ATTENTION || asc == 0xff)
341 dev_warn(&h->pdev->dev,
342 "%s: a state change detected, command retried\n",
346 dev_warn(&h->pdev->dev,
347 "%s: LUN failure detected\n", h->devname);
349 case REPORT_LUNS_CHANGED:
350 dev_warn(&h->pdev->dev,
351 "%s: report LUN data changed\n", h->devname);
353 * Note: this REPORT_LUNS_CHANGED condition only occurs on the external
354 * target (array) devices.
358 dev_warn(&h->pdev->dev,
359 "%s: a power on or device reset detected\n",
362 case UNIT_ATTENTION_CLEARED:
363 dev_warn(&h->pdev->dev,
364 "%s: unit attention cleared by another initiator\n",
368 dev_warn(&h->pdev->dev,
369 "%s: unknown unit attention detected\n",
376 static int check_for_busy(struct ctlr_info *h, struct CommandList *c)
378 if (c->err_info->CommandStatus != CMD_TARGET_STATUS ||
379 (c->err_info->ScsiStatus != SAM_STAT_BUSY &&
380 c->err_info->ScsiStatus != SAM_STAT_TASK_SET_FULL))
382 dev_warn(&h->pdev->dev, HPSA "device busy");
386 static u32 lockup_detected(struct ctlr_info *h);
387 static ssize_t host_show_lockup_detected(struct device *dev,
388 struct device_attribute *attr, char *buf)
392 struct Scsi_Host *shost = class_to_shost(dev);
394 h = shost_to_hba(shost);
395 ld = lockup_detected(h);
397 return sprintf(buf, "ld=%d\n", ld);
400 static ssize_t host_store_hp_ssd_smart_path_status(struct device *dev,
401 struct device_attribute *attr,
402 const char *buf, size_t count)
406 struct Scsi_Host *shost = class_to_shost(dev);
409 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
411 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count;
412 strncpy(tmpbuf, buf, len);
414 if (sscanf(tmpbuf, "%d", &status) != 1)
416 h = shost_to_hba(shost);
417 h->acciopath_status = !!status;
418 dev_warn(&h->pdev->dev,
419 "hpsa: HP SSD Smart Path %s via sysfs update.\n",
420 h->acciopath_status ? "enabled" : "disabled");
424 static ssize_t host_store_raid_offload_debug(struct device *dev,
425 struct device_attribute *attr,
426 const char *buf, size_t count)
428 int debug_level, len;
430 struct Scsi_Host *shost = class_to_shost(dev);
433 if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
435 len = count > sizeof(tmpbuf) - 1 ? sizeof(tmpbuf) - 1 : count;
436 strncpy(tmpbuf, buf, len);
438 if (sscanf(tmpbuf, "%d", &debug_level) != 1)
442 h = shost_to_hba(shost);
443 h->raid_offload_debug = debug_level;
444 dev_warn(&h->pdev->dev, "hpsa: Set raid_offload_debug level = %d\n",
445 h->raid_offload_debug);
449 static ssize_t host_store_rescan(struct device *dev,
450 struct device_attribute *attr,
451 const char *buf, size_t count)
454 struct Scsi_Host *shost = class_to_shost(dev);
455 h = shost_to_hba(shost);
456 hpsa_scan_start(h->scsi_host);
460 static ssize_t host_show_firmware_revision(struct device *dev,
461 struct device_attribute *attr, char *buf)
464 struct Scsi_Host *shost = class_to_shost(dev);
465 unsigned char *fwrev;
467 h = shost_to_hba(shost);
468 if (!h->hba_inquiry_data)
470 fwrev = &h->hba_inquiry_data[32];
471 return snprintf(buf, 20, "%c%c%c%c\n",
472 fwrev[0], fwrev[1], fwrev[2], fwrev[3]);
475 static ssize_t host_show_commands_outstanding(struct device *dev,
476 struct device_attribute *attr, char *buf)
478 struct Scsi_Host *shost = class_to_shost(dev);
479 struct ctlr_info *h = shost_to_hba(shost);
481 return snprintf(buf, 20, "%d\n",
482 atomic_read(&h->commands_outstanding));
485 static ssize_t host_show_transport_mode(struct device *dev,
486 struct device_attribute *attr, char *buf)
489 struct Scsi_Host *shost = class_to_shost(dev);
491 h = shost_to_hba(shost);
492 return snprintf(buf, 20, "%s\n",
493 h->transMethod & CFGTBL_Trans_Performant ?
494 "performant" : "simple");
497 static ssize_t host_show_hp_ssd_smart_path_status(struct device *dev,
498 struct device_attribute *attr, char *buf)
501 struct Scsi_Host *shost = class_to_shost(dev);
503 h = shost_to_hba(shost);
504 return snprintf(buf, 30, "HP SSD Smart Path %s\n",
505 (h->acciopath_status == 1) ? "enabled" : "disabled");
508 /* List of controllers which cannot be hard reset on kexec with reset_devices */
509 static u32 unresettable_controller[] = {
510 0x324a103C, /* Smart Array P712m */
511 0x324b103C, /* Smart Array P711m */
512 0x3223103C, /* Smart Array P800 */
513 0x3234103C, /* Smart Array P400 */
514 0x3235103C, /* Smart Array P400i */
515 0x3211103C, /* Smart Array E200i */
516 0x3212103C, /* Smart Array E200 */
517 0x3213103C, /* Smart Array E200i */
518 0x3214103C, /* Smart Array E200i */
519 0x3215103C, /* Smart Array E200i */
520 0x3237103C, /* Smart Array E500 */
521 0x323D103C, /* Smart Array P700m */
522 0x40800E11, /* Smart Array 5i */
523 0x409C0E11, /* Smart Array 6400 */
524 0x409D0E11, /* Smart Array 6400 EM */
525 0x40700E11, /* Smart Array 5300 */
526 0x40820E11, /* Smart Array 532 */
527 0x40830E11, /* Smart Array 5312 */
528 0x409A0E11, /* Smart Array 641 */
529 0x409B0E11, /* Smart Array 642 */
530 0x40910E11, /* Smart Array 6i */
533 /* List of controllers which cannot even be soft reset */
534 static u32 soft_unresettable_controller[] = {
535 0x40800E11, /* Smart Array 5i */
536 0x40700E11, /* Smart Array 5300 */
537 0x40820E11, /* Smart Array 532 */
538 0x40830E11, /* Smart Array 5312 */
539 0x409A0E11, /* Smart Array 641 */
540 0x409B0E11, /* Smart Array 642 */
541 0x40910E11, /* Smart Array 6i */
542 /* Exclude 640x boards. These are two pci devices in one slot
543 * which share a battery backed cache module. One controls the
544 * cache, the other accesses the cache through the one that controls
545 * it. If we reset the one controlling the cache, the other will
546 * likely not be happy. Just forbid resetting this conjoined mess.
547 * The 640x isn't really supported by hpsa anyway.
549 0x409C0E11, /* Smart Array 6400 */
550 0x409D0E11, /* Smart Array 6400 EM */
553 static u32 needs_abort_tags_swizzled[] = {
554 0x323D103C, /* Smart Array P700m */
555 0x324a103C, /* Smart Array P712m */
556 0x324b103C, /* SmartArray P711m */
559 static int board_id_in_array(u32 a[], int nelems, u32 board_id)
563 for (i = 0; i < nelems; i++)
564 if (a[i] == board_id)
569 static int ctlr_is_hard_resettable(u32 board_id)
571 return !board_id_in_array(unresettable_controller,
572 ARRAY_SIZE(unresettable_controller), board_id);
575 static int ctlr_is_soft_resettable(u32 board_id)
577 return !board_id_in_array(soft_unresettable_controller,
578 ARRAY_SIZE(soft_unresettable_controller), board_id);
581 static int ctlr_is_resettable(u32 board_id)
583 return ctlr_is_hard_resettable(board_id) ||
584 ctlr_is_soft_resettable(board_id);
587 static int ctlr_needs_abort_tags_swizzled(u32 board_id)
589 return board_id_in_array(needs_abort_tags_swizzled,
590 ARRAY_SIZE(needs_abort_tags_swizzled), board_id);
593 static ssize_t host_show_resettable(struct device *dev,
594 struct device_attribute *attr, char *buf)
597 struct Scsi_Host *shost = class_to_shost(dev);
599 h = shost_to_hba(shost);
600 return snprintf(buf, 20, "%d\n", ctlr_is_resettable(h->board_id));
603 static inline int is_logical_dev_addr_mode(unsigned char scsi3addr[])
605 return (scsi3addr[3] & 0xC0) == 0x40;
608 static const char * const raid_label[] = { "0", "4", "1(+0)", "5", "5+1", "6",
609 "1(+0)ADM", "UNKNOWN"
611 #define HPSA_RAID_0 0
612 #define HPSA_RAID_4 1
613 #define HPSA_RAID_1 2 /* also used for RAID 10 */
614 #define HPSA_RAID_5 3 /* also used for RAID 50 */
615 #define HPSA_RAID_51 4
616 #define HPSA_RAID_6 5 /* also used for RAID 60 */
617 #define HPSA_RAID_ADM 6 /* also used for RAID 1+0 ADM */
618 #define RAID_UNKNOWN (ARRAY_SIZE(raid_label) - 1)
620 static ssize_t raid_level_show(struct device *dev,
621 struct device_attribute *attr, char *buf)
624 unsigned char rlevel;
626 struct scsi_device *sdev;
627 struct hpsa_scsi_dev_t *hdev;
630 sdev = to_scsi_device(dev);
631 h = sdev_to_hba(sdev);
632 spin_lock_irqsave(&h->lock, flags);
633 hdev = sdev->hostdata;
635 spin_unlock_irqrestore(&h->lock, flags);
639 /* Is this even a logical drive? */
640 if (!is_logical_dev_addr_mode(hdev->scsi3addr)) {
641 spin_unlock_irqrestore(&h->lock, flags);
642 l = snprintf(buf, PAGE_SIZE, "N/A\n");
646 rlevel = hdev->raid_level;
647 spin_unlock_irqrestore(&h->lock, flags);
648 if (rlevel > RAID_UNKNOWN)
649 rlevel = RAID_UNKNOWN;
650 l = snprintf(buf, PAGE_SIZE, "RAID %s\n", raid_label[rlevel]);
654 static ssize_t lunid_show(struct device *dev,
655 struct device_attribute *attr, char *buf)
658 struct scsi_device *sdev;
659 struct hpsa_scsi_dev_t *hdev;
661 unsigned char lunid[8];
663 sdev = to_scsi_device(dev);
664 h = sdev_to_hba(sdev);
665 spin_lock_irqsave(&h->lock, flags);
666 hdev = sdev->hostdata;
668 spin_unlock_irqrestore(&h->lock, flags);
671 memcpy(lunid, hdev->scsi3addr, sizeof(lunid));
672 spin_unlock_irqrestore(&h->lock, flags);
673 return snprintf(buf, 20, "0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
674 lunid[0], lunid[1], lunid[2], lunid[3],
675 lunid[4], lunid[5], lunid[6], lunid[7]);
678 static ssize_t unique_id_show(struct device *dev,
679 struct device_attribute *attr, char *buf)
682 struct scsi_device *sdev;
683 struct hpsa_scsi_dev_t *hdev;
685 unsigned char sn[16];
687 sdev = to_scsi_device(dev);
688 h = sdev_to_hba(sdev);
689 spin_lock_irqsave(&h->lock, flags);
690 hdev = sdev->hostdata;
692 spin_unlock_irqrestore(&h->lock, flags);
695 memcpy(sn, hdev->device_id, sizeof(sn));
696 spin_unlock_irqrestore(&h->lock, flags);
697 return snprintf(buf, 16 * 2 + 2,
698 "%02X%02X%02X%02X%02X%02X%02X%02X"
699 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
700 sn[0], sn[1], sn[2], sn[3],
701 sn[4], sn[5], sn[6], sn[7],
702 sn[8], sn[9], sn[10], sn[11],
703 sn[12], sn[13], sn[14], sn[15]);
706 static ssize_t host_show_hp_ssd_smart_path_enabled(struct device *dev,
707 struct device_attribute *attr, char *buf)
710 struct scsi_device *sdev;
711 struct hpsa_scsi_dev_t *hdev;
715 sdev = to_scsi_device(dev);
716 h = sdev_to_hba(sdev);
717 spin_lock_irqsave(&h->lock, flags);
718 hdev = sdev->hostdata;
720 spin_unlock_irqrestore(&h->lock, flags);
723 offload_enabled = hdev->offload_enabled;
724 spin_unlock_irqrestore(&h->lock, flags);
725 return snprintf(buf, 20, "%d\n", offload_enabled);
729 #define PATH_STRING_LEN 50
731 static ssize_t path_info_show(struct device *dev,
732 struct device_attribute *attr, char *buf)
735 struct scsi_device *sdev;
736 struct hpsa_scsi_dev_t *hdev;
742 u8 path_map_index = 0;
744 unsigned char phys_connector[2];
745 unsigned char path[MAX_PATHS][PATH_STRING_LEN];
747 memset(path, 0, MAX_PATHS * PATH_STRING_LEN);
748 sdev = to_scsi_device(dev);
749 h = sdev_to_hba(sdev);
750 spin_lock_irqsave(&h->devlock, flags);
751 hdev = sdev->hostdata;
753 spin_unlock_irqrestore(&h->devlock, flags);
758 for (i = 0; i < MAX_PATHS; i++) {
759 path_map_index = 1<<i;
760 if (i == hdev->active_path_index)
762 else if (hdev->path_map & path_map_index)
767 output_len = snprintf(path[i],
768 PATH_STRING_LEN, "[%d:%d:%d:%d] %20.20s ",
769 h->scsi_host->host_no,
770 hdev->bus, hdev->target, hdev->lun,
771 scsi_device_type(hdev->devtype));
773 if (is_ext_target(h, hdev) ||
774 (hdev->devtype == TYPE_RAID) ||
775 is_logical_dev_addr_mode(hdev->scsi3addr)) {
776 output_len += snprintf(path[i] + output_len,
777 PATH_STRING_LEN, "%s\n",
783 memcpy(&phys_connector, &hdev->phys_connector[i],
784 sizeof(phys_connector));
785 if (phys_connector[0] < '0')
786 phys_connector[0] = '0';
787 if (phys_connector[1] < '0')
788 phys_connector[1] = '0';
789 if (hdev->phys_connector[i] > 0)
790 output_len += snprintf(path[i] + output_len,
794 if (hdev->devtype == TYPE_DISK &&
795 hdev->expose_state != HPSA_DO_NOT_EXPOSE) {
796 if (box == 0 || box == 0xFF) {
797 output_len += snprintf(path[i] + output_len,
802 output_len += snprintf(path[i] + output_len,
804 "BOX: %hhu BAY: %hhu %s\n",
807 } else if (box != 0 && box != 0xFF) {
808 output_len += snprintf(path[i] + output_len,
809 PATH_STRING_LEN, "BOX: %hhu %s\n",
812 output_len += snprintf(path[i] + output_len,
813 PATH_STRING_LEN, "%s\n", active);
816 spin_unlock_irqrestore(&h->devlock, flags);
817 return snprintf(buf, output_len+1, "%s%s%s%s%s%s%s%s",
818 path[0], path[1], path[2], path[3],
819 path[4], path[5], path[6], path[7]);
822 static DEVICE_ATTR(raid_level, S_IRUGO, raid_level_show, NULL);
823 static DEVICE_ATTR(lunid, S_IRUGO, lunid_show, NULL);
824 static DEVICE_ATTR(unique_id, S_IRUGO, unique_id_show, NULL);
825 static DEVICE_ATTR(rescan, S_IWUSR, NULL, host_store_rescan);
826 static DEVICE_ATTR(hp_ssd_smart_path_enabled, S_IRUGO,
827 host_show_hp_ssd_smart_path_enabled, NULL);
828 static DEVICE_ATTR(path_info, S_IRUGO, path_info_show, NULL);
829 static DEVICE_ATTR(hp_ssd_smart_path_status, S_IWUSR|S_IRUGO|S_IROTH,
830 host_show_hp_ssd_smart_path_status,
831 host_store_hp_ssd_smart_path_status);
832 static DEVICE_ATTR(raid_offload_debug, S_IWUSR, NULL,
833 host_store_raid_offload_debug);
834 static DEVICE_ATTR(firmware_revision, S_IRUGO,
835 host_show_firmware_revision, NULL);
836 static DEVICE_ATTR(commands_outstanding, S_IRUGO,
837 host_show_commands_outstanding, NULL);
838 static DEVICE_ATTR(transport_mode, S_IRUGO,
839 host_show_transport_mode, NULL);
840 static DEVICE_ATTR(resettable, S_IRUGO,
841 host_show_resettable, NULL);
842 static DEVICE_ATTR(lockup_detected, S_IRUGO,
843 host_show_lockup_detected, NULL);
845 static struct device_attribute *hpsa_sdev_attrs[] = {
846 &dev_attr_raid_level,
849 &dev_attr_hp_ssd_smart_path_enabled,
851 &dev_attr_lockup_detected,
855 static struct device_attribute *hpsa_shost_attrs[] = {
857 &dev_attr_firmware_revision,
858 &dev_attr_commands_outstanding,
859 &dev_attr_transport_mode,
860 &dev_attr_resettable,
861 &dev_attr_hp_ssd_smart_path_status,
862 &dev_attr_raid_offload_debug,
866 #define HPSA_NRESERVED_CMDS (HPSA_CMDS_RESERVED_FOR_ABORTS + \
867 HPSA_CMDS_RESERVED_FOR_DRIVER + HPSA_MAX_CONCURRENT_PASSTHRUS)
869 static struct scsi_host_template hpsa_driver_template = {
870 .module = THIS_MODULE,
873 .queuecommand = hpsa_scsi_queue_command,
874 .scan_start = hpsa_scan_start,
875 .scan_finished = hpsa_scan_finished,
876 .change_queue_depth = hpsa_change_queue_depth,
878 .use_clustering = ENABLE_CLUSTERING,
879 .eh_abort_handler = hpsa_eh_abort_handler,
880 .eh_device_reset_handler = hpsa_eh_device_reset_handler,
882 .slave_alloc = hpsa_slave_alloc,
883 .slave_configure = hpsa_slave_configure,
884 .slave_destroy = hpsa_slave_destroy,
886 .compat_ioctl = hpsa_compat_ioctl,
888 .sdev_attrs = hpsa_sdev_attrs,
889 .shost_attrs = hpsa_shost_attrs,
894 static inline u32 next_command(struct ctlr_info *h, u8 q)
897 struct reply_queue_buffer *rq = &h->reply_queue[q];
899 if (h->transMethod & CFGTBL_Trans_io_accel1)
900 return h->access.command_completed(h, q);
902 if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant)))
903 return h->access.command_completed(h, q);
905 if ((rq->head[rq->current_entry] & 1) == rq->wraparound) {
906 a = rq->head[rq->current_entry];
908 atomic_dec(&h->commands_outstanding);
912 /* Check for wraparound */
913 if (rq->current_entry == h->max_commands) {
914 rq->current_entry = 0;
921 * There are some special bits in the bus address of the
922 * command that we have to set for the controller to know
923 * how to process the command:
925 * Normal performant mode:
926 * bit 0: 1 means performant mode, 0 means simple mode.
927 * bits 1-3 = block fetch table entry
928 * bits 4-6 = command type (== 0)
931 * bit 0 = "performant mode" bit.
932 * bits 1-3 = block fetch table entry
933 * bits 4-6 = command type (== 110)
934 * (command type is needed because ioaccel1 mode
935 * commands are submitted through the same register as normal
936 * mode commands, so this is how the controller knows whether
937 * the command is normal mode or ioaccel1 mode.)
940 * bit 0 = "performant mode" bit.
941 * bits 1-4 = block fetch table entry (note extra bit)
942 * bits 4-6 = not needed, because ioaccel2 mode has
943 * a separate special register for submitting commands.
947 * set_performant_mode: Modify the tag for cciss performant
948 * set bit 0 for pull model, bits 3-1 for block fetch
951 #define DEFAULT_REPLY_QUEUE (-1)
952 static void set_performant_mode(struct ctlr_info *h, struct CommandList *c,
955 if (likely(h->transMethod & CFGTBL_Trans_Performant)) {
956 c->busaddr |= 1 | (h->blockFetchTable[c->Header.SGList] << 1);
957 if (unlikely(!h->msix_vector))
959 if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
960 c->Header.ReplyQueue =
961 raw_smp_processor_id() % h->nreply_queues;
963 c->Header.ReplyQueue = reply_queue % h->nreply_queues;
967 static void set_ioaccel1_performant_mode(struct ctlr_info *h,
968 struct CommandList *c,
971 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex];
974 * Tell the controller to post the reply to the queue for this
975 * processor. This seems to give the best I/O throughput.
977 if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
978 cp->ReplyQueue = smp_processor_id() % h->nreply_queues;
980 cp->ReplyQueue = reply_queue % h->nreply_queues;
982 * Set the bits in the address sent down to include:
983 * - performant mode bit (bit 0)
984 * - pull count (bits 1-3)
985 * - command type (bits 4-6)
987 c->busaddr |= 1 | (h->ioaccel1_blockFetchTable[c->Header.SGList] << 1) |
988 IOACCEL1_BUSADDR_CMDTYPE;
991 static void set_ioaccel2_tmf_performant_mode(struct ctlr_info *h,
992 struct CommandList *c,
995 struct hpsa_tmf_struct *cp = (struct hpsa_tmf_struct *)
996 &h->ioaccel2_cmd_pool[c->cmdindex];
998 /* Tell the controller to post the reply to the queue for this
999 * processor. This seems to give the best I/O throughput.
1001 if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
1002 cp->reply_queue = smp_processor_id() % h->nreply_queues;
1004 cp->reply_queue = reply_queue % h->nreply_queues;
1005 /* Set the bits in the address sent down to include:
1006 * - performant mode bit not used in ioaccel mode 2
1007 * - pull count (bits 0-3)
1008 * - command type isn't needed for ioaccel2
1010 c->busaddr |= h->ioaccel2_blockFetchTable[0];
1013 static void set_ioaccel2_performant_mode(struct ctlr_info *h,
1014 struct CommandList *c,
1017 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex];
1020 * Tell the controller to post the reply to the queue for this
1021 * processor. This seems to give the best I/O throughput.
1023 if (likely(reply_queue == DEFAULT_REPLY_QUEUE))
1024 cp->reply_queue = smp_processor_id() % h->nreply_queues;
1026 cp->reply_queue = reply_queue % h->nreply_queues;
1028 * Set the bits in the address sent down to include:
1029 * - performant mode bit not used in ioaccel mode 2
1030 * - pull count (bits 0-3)
1031 * - command type isn't needed for ioaccel2
1033 c->busaddr |= (h->ioaccel2_blockFetchTable[cp->sg_count]);
1036 static int is_firmware_flash_cmd(u8 *cdb)
1038 return cdb[0] == BMIC_WRITE && cdb[6] == BMIC_FLASH_FIRMWARE;
1042 * During firmware flash, the heartbeat register may not update as frequently
1043 * as it should. So we dial down lockup detection during firmware flash. and
1044 * dial it back up when firmware flash completes.
1046 #define HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH (240 * HZ)
1047 #define HEARTBEAT_SAMPLE_INTERVAL (30 * HZ)
1048 static void dial_down_lockup_detection_during_fw_flash(struct ctlr_info *h,
1049 struct CommandList *c)
1051 if (!is_firmware_flash_cmd(c->Request.CDB))
1053 atomic_inc(&h->firmware_flash_in_progress);
1054 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH;
1057 static void dial_up_lockup_detection_on_fw_flash_complete(struct ctlr_info *h,
1058 struct CommandList *c)
1060 if (is_firmware_flash_cmd(c->Request.CDB) &&
1061 atomic_dec_and_test(&h->firmware_flash_in_progress))
1062 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
1065 static void __enqueue_cmd_and_start_io(struct ctlr_info *h,
1066 struct CommandList *c, int reply_queue)
1068 dial_down_lockup_detection_during_fw_flash(h, c);
1069 atomic_inc(&h->commands_outstanding);
1070 switch (c->cmd_type) {
1072 set_ioaccel1_performant_mode(h, c, reply_queue);
1073 writel(c->busaddr, h->vaddr + SA5_REQUEST_PORT_OFFSET);
1076 set_ioaccel2_performant_mode(h, c, reply_queue);
1077 writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32);
1080 set_ioaccel2_tmf_performant_mode(h, c, reply_queue);
1081 writel(c->busaddr, h->vaddr + IOACCEL2_INBOUND_POSTQ_32);
1084 set_performant_mode(h, c, reply_queue);
1085 h->access.submit_command(h, c);
1089 static void enqueue_cmd_and_start_io(struct ctlr_info *h, struct CommandList *c)
1091 if (unlikely(hpsa_is_pending_event(c)))
1092 return finish_cmd(c);
1094 __enqueue_cmd_and_start_io(h, c, DEFAULT_REPLY_QUEUE);
1097 static inline int is_hba_lunid(unsigned char scsi3addr[])
1099 return memcmp(scsi3addr, RAID_CTLR_LUNID, 8) == 0;
1102 static inline int is_scsi_rev_5(struct ctlr_info *h)
1104 if (!h->hba_inquiry_data)
1106 if ((h->hba_inquiry_data[2] & 0x07) == 5)
1111 static int hpsa_find_target_lun(struct ctlr_info *h,
1112 unsigned char scsi3addr[], int bus, int *target, int *lun)
1114 /* finds an unused bus, target, lun for a new physical device
1115 * assumes h->devlock is held
1118 DECLARE_BITMAP(lun_taken, HPSA_MAX_DEVICES);
1120 bitmap_zero(lun_taken, HPSA_MAX_DEVICES);
1122 for (i = 0; i < h->ndevices; i++) {
1123 if (h->dev[i]->bus == bus && h->dev[i]->target != -1)
1124 __set_bit(h->dev[i]->target, lun_taken);
1127 i = find_first_zero_bit(lun_taken, HPSA_MAX_DEVICES);
1128 if (i < HPSA_MAX_DEVICES) {
1137 static inline void hpsa_show_dev_msg(const char *level, struct ctlr_info *h,
1138 struct hpsa_scsi_dev_t *dev, char *description)
1140 dev_printk(level, &h->pdev->dev,
1141 "scsi %d:%d:%d:%d: %s %s %.8s %.16s RAID-%s SSDSmartPathCap%c En%c Exp=%d\n",
1142 h->scsi_host->host_no, dev->bus, dev->target, dev->lun,
1144 scsi_device_type(dev->devtype),
1147 dev->raid_level > RAID_UNKNOWN ?
1148 "RAID-?" : raid_label[dev->raid_level],
1149 dev->offload_config ? '+' : '-',
1150 dev->offload_enabled ? '+' : '-',
1154 /* Add an entry into h->dev[] array. */
1155 static int hpsa_scsi_add_entry(struct ctlr_info *h, int hostno,
1156 struct hpsa_scsi_dev_t *device,
1157 struct hpsa_scsi_dev_t *added[], int *nadded)
1159 /* assumes h->devlock is held */
1160 int n = h->ndevices;
1162 unsigned char addr1[8], addr2[8];
1163 struct hpsa_scsi_dev_t *sd;
1165 if (n >= HPSA_MAX_DEVICES) {
1166 dev_err(&h->pdev->dev, "too many devices, some will be "
1171 /* physical devices do not have lun or target assigned until now. */
1172 if (device->lun != -1)
1173 /* Logical device, lun is already assigned. */
1176 /* If this device a non-zero lun of a multi-lun device
1177 * byte 4 of the 8-byte LUN addr will contain the logical
1178 * unit no, zero otherwise.
1180 if (device->scsi3addr[4] == 0) {
1181 /* This is not a non-zero lun of a multi-lun device */
1182 if (hpsa_find_target_lun(h, device->scsi3addr,
1183 device->bus, &device->target, &device->lun) != 0)
1188 /* This is a non-zero lun of a multi-lun device.
1189 * Search through our list and find the device which
1190 * has the same 8 byte LUN address, excepting byte 4 and 5.
1191 * Assign the same bus and target for this new LUN.
1192 * Use the logical unit number from the firmware.
1194 memcpy(addr1, device->scsi3addr, 8);
1197 for (i = 0; i < n; i++) {
1199 memcpy(addr2, sd->scsi3addr, 8);
1202 /* differ only in byte 4 and 5? */
1203 if (memcmp(addr1, addr2, 8) == 0) {
1204 device->bus = sd->bus;
1205 device->target = sd->target;
1206 device->lun = device->scsi3addr[4];
1210 if (device->lun == -1) {
1211 dev_warn(&h->pdev->dev, "physical device with no LUN=0,"
1212 " suspect firmware bug or unsupported hardware "
1213 "configuration.\n");
1221 added[*nadded] = device;
1223 hpsa_show_dev_msg(KERN_INFO, h, device,
1224 device->expose_state & HPSA_SCSI_ADD ? "added" : "masked");
1225 device->offload_to_be_enabled = device->offload_enabled;
1226 device->offload_enabled = 0;
1230 /* Update an entry in h->dev[] array. */
1231 static void hpsa_scsi_update_entry(struct ctlr_info *h, int hostno,
1232 int entry, struct hpsa_scsi_dev_t *new_entry)
1234 int offload_enabled;
1235 /* assumes h->devlock is held */
1236 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1238 /* Raid level changed. */
1239 h->dev[entry]->raid_level = new_entry->raid_level;
1241 /* Raid offload parameters changed. Careful about the ordering. */
1242 if (new_entry->offload_config && new_entry->offload_enabled) {
1244 * if drive is newly offload_enabled, we want to copy the
1245 * raid map data first. If previously offload_enabled and
1246 * offload_config were set, raid map data had better be
1247 * the same as it was before. if raid map data is changed
1248 * then it had better be the case that
1249 * h->dev[entry]->offload_enabled is currently 0.
1251 h->dev[entry]->raid_map = new_entry->raid_map;
1252 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
1254 if (new_entry->hba_ioaccel_enabled) {
1255 h->dev[entry]->ioaccel_handle = new_entry->ioaccel_handle;
1256 wmb(); /* set ioaccel_handle *before* hba_ioaccel_enabled */
1258 h->dev[entry]->hba_ioaccel_enabled = new_entry->hba_ioaccel_enabled;
1259 h->dev[entry]->offload_config = new_entry->offload_config;
1260 h->dev[entry]->offload_to_mirror = new_entry->offload_to_mirror;
1261 h->dev[entry]->queue_depth = new_entry->queue_depth;
1264 * We can turn off ioaccel offload now, but need to delay turning
1265 * it on until we can update h->dev[entry]->phys_disk[], but we
1266 * can't do that until all the devices are updated.
1268 h->dev[entry]->offload_to_be_enabled = new_entry->offload_enabled;
1269 if (!new_entry->offload_enabled)
1270 h->dev[entry]->offload_enabled = 0;
1272 offload_enabled = h->dev[entry]->offload_enabled;
1273 h->dev[entry]->offload_enabled = h->dev[entry]->offload_to_be_enabled;
1274 hpsa_show_dev_msg(KERN_INFO, h, h->dev[entry], "updated");
1275 h->dev[entry]->offload_enabled = offload_enabled;
1278 /* Replace an entry from h->dev[] array. */
1279 static void hpsa_scsi_replace_entry(struct ctlr_info *h, int hostno,
1280 int entry, struct hpsa_scsi_dev_t *new_entry,
1281 struct hpsa_scsi_dev_t *added[], int *nadded,
1282 struct hpsa_scsi_dev_t *removed[], int *nremoved)
1284 /* assumes h->devlock is held */
1285 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1286 removed[*nremoved] = h->dev[entry];
1290 * New physical devices won't have target/lun assigned yet
1291 * so we need to preserve the values in the slot we are replacing.
1293 if (new_entry->target == -1) {
1294 new_entry->target = h->dev[entry]->target;
1295 new_entry->lun = h->dev[entry]->lun;
1298 h->dev[entry] = new_entry;
1299 added[*nadded] = new_entry;
1301 hpsa_show_dev_msg(KERN_INFO, h, new_entry, "replaced");
1302 new_entry->offload_to_be_enabled = new_entry->offload_enabled;
1303 new_entry->offload_enabled = 0;
1306 /* Remove an entry from h->dev[] array. */
1307 static void hpsa_scsi_remove_entry(struct ctlr_info *h, int hostno, int entry,
1308 struct hpsa_scsi_dev_t *removed[], int *nremoved)
1310 /* assumes h->devlock is held */
1312 struct hpsa_scsi_dev_t *sd;
1314 BUG_ON(entry < 0 || entry >= HPSA_MAX_DEVICES);
1317 removed[*nremoved] = h->dev[entry];
1320 for (i = entry; i < h->ndevices-1; i++)
1321 h->dev[i] = h->dev[i+1];
1323 hpsa_show_dev_msg(KERN_INFO, h, sd, "removed");
1326 #define SCSI3ADDR_EQ(a, b) ( \
1327 (a)[7] == (b)[7] && \
1328 (a)[6] == (b)[6] && \
1329 (a)[5] == (b)[5] && \
1330 (a)[4] == (b)[4] && \
1331 (a)[3] == (b)[3] && \
1332 (a)[2] == (b)[2] && \
1333 (a)[1] == (b)[1] && \
1336 static void fixup_botched_add(struct ctlr_info *h,
1337 struct hpsa_scsi_dev_t *added)
1339 /* called when scsi_add_device fails in order to re-adjust
1340 * h->dev[] to match the mid layer's view.
1342 unsigned long flags;
1345 spin_lock_irqsave(&h->lock, flags);
1346 for (i = 0; i < h->ndevices; i++) {
1347 if (h->dev[i] == added) {
1348 for (j = i; j < h->ndevices-1; j++)
1349 h->dev[j] = h->dev[j+1];
1354 spin_unlock_irqrestore(&h->lock, flags);
1358 static inline int device_is_the_same(struct hpsa_scsi_dev_t *dev1,
1359 struct hpsa_scsi_dev_t *dev2)
1361 /* we compare everything except lun and target as these
1362 * are not yet assigned. Compare parts likely
1365 if (memcmp(dev1->scsi3addr, dev2->scsi3addr,
1366 sizeof(dev1->scsi3addr)) != 0)
1368 if (memcmp(dev1->device_id, dev2->device_id,
1369 sizeof(dev1->device_id)) != 0)
1371 if (memcmp(dev1->model, dev2->model, sizeof(dev1->model)) != 0)
1373 if (memcmp(dev1->vendor, dev2->vendor, sizeof(dev1->vendor)) != 0)
1375 if (dev1->devtype != dev2->devtype)
1377 if (dev1->bus != dev2->bus)
1382 static inline int device_updated(struct hpsa_scsi_dev_t *dev1,
1383 struct hpsa_scsi_dev_t *dev2)
1385 /* Device attributes that can change, but don't mean
1386 * that the device is a different device, nor that the OS
1387 * needs to be told anything about the change.
1389 if (dev1->raid_level != dev2->raid_level)
1391 if (dev1->offload_config != dev2->offload_config)
1393 if (dev1->offload_enabled != dev2->offload_enabled)
1395 if (!is_logical_dev_addr_mode(dev1->scsi3addr))
1396 if (dev1->queue_depth != dev2->queue_depth)
1401 /* Find needle in haystack. If exact match found, return DEVICE_SAME,
1402 * and return needle location in *index. If scsi3addr matches, but not
1403 * vendor, model, serial num, etc. return DEVICE_CHANGED, and return needle
1404 * location in *index.
1405 * In the case of a minor device attribute change, such as RAID level, just
1406 * return DEVICE_UPDATED, along with the updated device's location in index.
1407 * If needle not found, return DEVICE_NOT_FOUND.
1409 static int hpsa_scsi_find_entry(struct hpsa_scsi_dev_t *needle,
1410 struct hpsa_scsi_dev_t *haystack[], int haystack_size,
1414 #define DEVICE_NOT_FOUND 0
1415 #define DEVICE_CHANGED 1
1416 #define DEVICE_SAME 2
1417 #define DEVICE_UPDATED 3
1418 for (i = 0; i < haystack_size; i++) {
1419 if (haystack[i] == NULL) /* previously removed. */
1421 if (SCSI3ADDR_EQ(needle->scsi3addr, haystack[i]->scsi3addr)) {
1423 if (device_is_the_same(needle, haystack[i])) {
1424 if (device_updated(needle, haystack[i]))
1425 return DEVICE_UPDATED;
1428 /* Keep offline devices offline */
1429 if (needle->volume_offline)
1430 return DEVICE_NOT_FOUND;
1431 return DEVICE_CHANGED;
1436 return DEVICE_NOT_FOUND;
1439 static void hpsa_monitor_offline_device(struct ctlr_info *h,
1440 unsigned char scsi3addr[])
1442 struct offline_device_entry *device;
1443 unsigned long flags;
1445 /* Check to see if device is already on the list */
1446 spin_lock_irqsave(&h->offline_device_lock, flags);
1447 list_for_each_entry(device, &h->offline_device_list, offline_list) {
1448 if (memcmp(device->scsi3addr, scsi3addr,
1449 sizeof(device->scsi3addr)) == 0) {
1450 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1454 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1456 /* Device is not on the list, add it. */
1457 device = kmalloc(sizeof(*device), GFP_KERNEL);
1459 dev_warn(&h->pdev->dev, "out of memory in %s\n", __func__);
1462 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr));
1463 spin_lock_irqsave(&h->offline_device_lock, flags);
1464 list_add_tail(&device->offline_list, &h->offline_device_list);
1465 spin_unlock_irqrestore(&h->offline_device_lock, flags);
1468 /* Print a message explaining various offline volume states */
1469 static void hpsa_show_volume_status(struct ctlr_info *h,
1470 struct hpsa_scsi_dev_t *sd)
1472 if (sd->volume_offline == HPSA_VPD_LV_STATUS_UNSUPPORTED)
1473 dev_info(&h->pdev->dev,
1474 "C%d:B%d:T%d:L%d Volume status is not available through vital product data pages.\n",
1475 h->scsi_host->host_no,
1476 sd->bus, sd->target, sd->lun);
1477 switch (sd->volume_offline) {
1480 case HPSA_LV_UNDERGOING_ERASE:
1481 dev_info(&h->pdev->dev,
1482 "C%d:B%d:T%d:L%d Volume is undergoing background erase process.\n",
1483 h->scsi_host->host_no,
1484 sd->bus, sd->target, sd->lun);
1486 case HPSA_LV_NOT_AVAILABLE:
1487 dev_info(&h->pdev->dev,
1488 "C%d:B%d:T%d:L%d Volume is waiting for transforming volume.\n",
1489 h->scsi_host->host_no,
1490 sd->bus, sd->target, sd->lun);
1492 case HPSA_LV_UNDERGOING_RPI:
1493 dev_info(&h->pdev->dev,
1494 "C%d:B%d:T%d:L%d Volume is undergoing rapid parity init.\n",
1495 h->scsi_host->host_no,
1496 sd->bus, sd->target, sd->lun);
1498 case HPSA_LV_PENDING_RPI:
1499 dev_info(&h->pdev->dev,
1500 "C%d:B%d:T%d:L%d Volume is queued for rapid parity initialization process.\n",
1501 h->scsi_host->host_no,
1502 sd->bus, sd->target, sd->lun);
1504 case HPSA_LV_ENCRYPTED_NO_KEY:
1505 dev_info(&h->pdev->dev,
1506 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because key is not present.\n",
1507 h->scsi_host->host_no,
1508 sd->bus, sd->target, sd->lun);
1510 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
1511 dev_info(&h->pdev->dev,
1512 "C%d:B%d:T%d:L%d Volume is not encrypted and cannot be accessed because controller is in encryption-only mode.\n",
1513 h->scsi_host->host_no,
1514 sd->bus, sd->target, sd->lun);
1516 case HPSA_LV_UNDERGOING_ENCRYPTION:
1517 dev_info(&h->pdev->dev,
1518 "C%d:B%d:T%d:L%d Volume is undergoing encryption process.\n",
1519 h->scsi_host->host_no,
1520 sd->bus, sd->target, sd->lun);
1522 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
1523 dev_info(&h->pdev->dev,
1524 "C%d:B%d:T%d:L%d Volume is undergoing encryption re-keying process.\n",
1525 h->scsi_host->host_no,
1526 sd->bus, sd->target, sd->lun);
1528 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
1529 dev_info(&h->pdev->dev,
1530 "C%d:B%d:T%d:L%d Volume is encrypted and cannot be accessed because controller does not have encryption enabled.\n",
1531 h->scsi_host->host_no,
1532 sd->bus, sd->target, sd->lun);
1534 case HPSA_LV_PENDING_ENCRYPTION:
1535 dev_info(&h->pdev->dev,
1536 "C%d:B%d:T%d:L%d Volume is pending migration to encrypted state, but process has not started.\n",
1537 h->scsi_host->host_no,
1538 sd->bus, sd->target, sd->lun);
1540 case HPSA_LV_PENDING_ENCRYPTION_REKEYING:
1541 dev_info(&h->pdev->dev,
1542 "C%d:B%d:T%d:L%d Volume is encrypted and is pending encryption rekeying.\n",
1543 h->scsi_host->host_no,
1544 sd->bus, sd->target, sd->lun);
1550 * Figure the list of physical drive pointers for a logical drive with
1551 * raid offload configured.
1553 static void hpsa_figure_phys_disk_ptrs(struct ctlr_info *h,
1554 struct hpsa_scsi_dev_t *dev[], int ndevices,
1555 struct hpsa_scsi_dev_t *logical_drive)
1557 struct raid_map_data *map = &logical_drive->raid_map;
1558 struct raid_map_disk_data *dd = &map->data[0];
1560 int total_disks_per_row = le16_to_cpu(map->data_disks_per_row) +
1561 le16_to_cpu(map->metadata_disks_per_row);
1562 int nraid_map_entries = le16_to_cpu(map->row_cnt) *
1563 le16_to_cpu(map->layout_map_count) *
1564 total_disks_per_row;
1565 int nphys_disk = le16_to_cpu(map->layout_map_count) *
1566 total_disks_per_row;
1569 if (nraid_map_entries > RAID_MAP_MAX_ENTRIES)
1570 nraid_map_entries = RAID_MAP_MAX_ENTRIES;
1572 logical_drive->nphysical_disks = nraid_map_entries;
1575 for (i = 0; i < nraid_map_entries; i++) {
1576 logical_drive->phys_disk[i] = NULL;
1577 if (!logical_drive->offload_config)
1579 for (j = 0; j < ndevices; j++) {
1580 if (dev[j]->devtype != TYPE_DISK)
1582 if (is_logical_dev_addr_mode(dev[j]->scsi3addr))
1584 if (dev[j]->ioaccel_handle != dd[i].ioaccel_handle)
1587 logical_drive->phys_disk[i] = dev[j];
1589 qdepth = min(h->nr_cmds, qdepth +
1590 logical_drive->phys_disk[i]->queue_depth);
1595 * This can happen if a physical drive is removed and
1596 * the logical drive is degraded. In that case, the RAID
1597 * map data will refer to a physical disk which isn't actually
1598 * present. And in that case offload_enabled should already
1599 * be 0, but we'll turn it off here just in case
1601 if (!logical_drive->phys_disk[i]) {
1602 logical_drive->offload_enabled = 0;
1603 logical_drive->offload_to_be_enabled = 0;
1604 logical_drive->queue_depth = 8;
1607 if (nraid_map_entries)
1609 * This is correct for reads, too high for full stripe writes,
1610 * way too high for partial stripe writes
1612 logical_drive->queue_depth = qdepth;
1614 logical_drive->queue_depth = h->nr_cmds;
1617 static void hpsa_update_log_drive_phys_drive_ptrs(struct ctlr_info *h,
1618 struct hpsa_scsi_dev_t *dev[], int ndevices)
1622 for (i = 0; i < ndevices; i++) {
1623 if (dev[i]->devtype != TYPE_DISK)
1625 if (!is_logical_dev_addr_mode(dev[i]->scsi3addr))
1629 * If offload is currently enabled, the RAID map and
1630 * phys_disk[] assignment *better* not be changing
1631 * and since it isn't changing, we do not need to
1634 if (dev[i]->offload_enabled)
1637 hpsa_figure_phys_disk_ptrs(h, dev, ndevices, dev[i]);
1641 static void adjust_hpsa_scsi_table(struct ctlr_info *h, int hostno,
1642 struct hpsa_scsi_dev_t *sd[], int nsds)
1644 /* sd contains scsi3 addresses and devtypes, and inquiry
1645 * data. This function takes what's in sd to be the current
1646 * reality and updates h->dev[] to reflect that reality.
1648 int i, entry, device_change, changes = 0;
1649 struct hpsa_scsi_dev_t *csd;
1650 unsigned long flags;
1651 struct hpsa_scsi_dev_t **added, **removed;
1652 int nadded, nremoved;
1653 struct Scsi_Host *sh = NULL;
1655 added = kzalloc(sizeof(*added) * HPSA_MAX_DEVICES, GFP_KERNEL);
1656 removed = kzalloc(sizeof(*removed) * HPSA_MAX_DEVICES, GFP_KERNEL);
1658 if (!added || !removed) {
1659 dev_warn(&h->pdev->dev, "out of memory in "
1660 "adjust_hpsa_scsi_table\n");
1664 spin_lock_irqsave(&h->devlock, flags);
1666 /* find any devices in h->dev[] that are not in
1667 * sd[] and remove them from h->dev[], and for any
1668 * devices which have changed, remove the old device
1669 * info and add the new device info.
1670 * If minor device attributes change, just update
1671 * the existing device structure.
1676 while (i < h->ndevices) {
1678 device_change = hpsa_scsi_find_entry(csd, sd, nsds, &entry);
1679 if (device_change == DEVICE_NOT_FOUND) {
1681 hpsa_scsi_remove_entry(h, hostno, i,
1682 removed, &nremoved);
1683 continue; /* remove ^^^, hence i not incremented */
1684 } else if (device_change == DEVICE_CHANGED) {
1686 hpsa_scsi_replace_entry(h, hostno, i, sd[entry],
1687 added, &nadded, removed, &nremoved);
1688 /* Set it to NULL to prevent it from being freed
1689 * at the bottom of hpsa_update_scsi_devices()
1692 } else if (device_change == DEVICE_UPDATED) {
1693 hpsa_scsi_update_entry(h, hostno, i, sd[entry]);
1698 /* Now, make sure every device listed in sd[] is also
1699 * listed in h->dev[], adding them if they aren't found
1702 for (i = 0; i < nsds; i++) {
1703 if (!sd[i]) /* if already added above. */
1706 /* Don't add devices which are NOT READY, FORMAT IN PROGRESS
1707 * as the SCSI mid-layer does not handle such devices well.
1708 * It relentlessly loops sending TUR at 3Hz, then READ(10)
1709 * at 160Hz, and prevents the system from coming up.
1711 if (sd[i]->volume_offline) {
1712 hpsa_show_volume_status(h, sd[i]);
1713 hpsa_show_dev_msg(KERN_INFO, h, sd[i], "offline");
1717 device_change = hpsa_scsi_find_entry(sd[i], h->dev,
1718 h->ndevices, &entry);
1719 if (device_change == DEVICE_NOT_FOUND) {
1721 if (hpsa_scsi_add_entry(h, hostno, sd[i],
1722 added, &nadded) != 0)
1724 sd[i] = NULL; /* prevent from being freed later. */
1725 } else if (device_change == DEVICE_CHANGED) {
1726 /* should never happen... */
1728 dev_warn(&h->pdev->dev,
1729 "device unexpectedly changed.\n");
1730 /* but if it does happen, we just ignore that device */
1733 hpsa_update_log_drive_phys_drive_ptrs(h, h->dev, h->ndevices);
1735 /* Now that h->dev[]->phys_disk[] is coherent, we can enable
1736 * any logical drives that need it enabled.
1738 for (i = 0; i < h->ndevices; i++)
1739 h->dev[i]->offload_enabled = h->dev[i]->offload_to_be_enabled;
1741 spin_unlock_irqrestore(&h->devlock, flags);
1743 /* Monitor devices which are in one of several NOT READY states to be
1744 * brought online later. This must be done without holding h->devlock,
1745 * so don't touch h->dev[]
1747 for (i = 0; i < nsds; i++) {
1748 if (!sd[i]) /* if already added above. */
1750 if (sd[i]->volume_offline)
1751 hpsa_monitor_offline_device(h, sd[i]->scsi3addr);
1754 /* Don't notify scsi mid layer of any changes the first time through
1755 * (or if there are no changes) scsi_scan_host will do it later the
1756 * first time through.
1758 if (hostno == -1 || !changes)
1762 /* Notify scsi mid layer of any removed devices */
1763 for (i = 0; i < nremoved; i++) {
1764 if (removed[i]->expose_state & HPSA_SCSI_ADD) {
1765 struct scsi_device *sdev =
1766 scsi_device_lookup(sh, removed[i]->bus,
1767 removed[i]->target, removed[i]->lun);
1769 scsi_remove_device(sdev);
1770 scsi_device_put(sdev);
1773 * We don't expect to get here.
1774 * future cmds to this device will get selection
1775 * timeout as if the device was gone.
1777 hpsa_show_dev_msg(KERN_WARNING, h, removed[i],
1778 "didn't find device for removal.");
1785 /* Notify scsi mid layer of any added devices */
1786 for (i = 0; i < nadded; i++) {
1787 if (!(added[i]->expose_state & HPSA_SCSI_ADD))
1789 if (scsi_add_device(sh, added[i]->bus,
1790 added[i]->target, added[i]->lun) == 0)
1792 hpsa_show_dev_msg(KERN_WARNING, h, added[i],
1793 "addition failed, device not added.");
1794 /* now we have to remove it from h->dev,
1795 * since it didn't get added to scsi mid layer
1797 fixup_botched_add(h, added[i]);
1807 * Lookup bus/target/lun and return corresponding struct hpsa_scsi_dev_t *
1808 * Assume's h->devlock is held.
1810 static struct hpsa_scsi_dev_t *lookup_hpsa_scsi_dev(struct ctlr_info *h,
1811 int bus, int target, int lun)
1814 struct hpsa_scsi_dev_t *sd;
1816 for (i = 0; i < h->ndevices; i++) {
1818 if (sd->bus == bus && sd->target == target && sd->lun == lun)
1824 static int hpsa_slave_alloc(struct scsi_device *sdev)
1826 struct hpsa_scsi_dev_t *sd;
1827 unsigned long flags;
1828 struct ctlr_info *h;
1830 h = sdev_to_hba(sdev);
1831 spin_lock_irqsave(&h->devlock, flags);
1832 sd = lookup_hpsa_scsi_dev(h, sdev_channel(sdev),
1833 sdev_id(sdev), sdev->lun);
1835 atomic_set(&sd->ioaccel_cmds_out, 0);
1836 sdev->hostdata = (sd->expose_state & HPSA_SCSI_ADD) ? sd : NULL;
1838 sdev->hostdata = NULL;
1839 spin_unlock_irqrestore(&h->devlock, flags);
1843 /* configure scsi device based on internal per-device structure */
1844 static int hpsa_slave_configure(struct scsi_device *sdev)
1846 struct hpsa_scsi_dev_t *sd;
1849 sd = sdev->hostdata;
1850 sdev->no_uld_attach = !sd || !(sd->expose_state & HPSA_ULD_ATTACH);
1853 queue_depth = sd->queue_depth != 0 ?
1854 sd->queue_depth : sdev->host->can_queue;
1856 queue_depth = sdev->host->can_queue;
1858 scsi_change_queue_depth(sdev, queue_depth);
1863 static void hpsa_slave_destroy(struct scsi_device *sdev)
1865 /* nothing to do. */
1868 static void hpsa_free_ioaccel2_sg_chain_blocks(struct ctlr_info *h)
1872 if (!h->ioaccel2_cmd_sg_list)
1874 for (i = 0; i < h->nr_cmds; i++) {
1875 kfree(h->ioaccel2_cmd_sg_list[i]);
1876 h->ioaccel2_cmd_sg_list[i] = NULL;
1878 kfree(h->ioaccel2_cmd_sg_list);
1879 h->ioaccel2_cmd_sg_list = NULL;
1882 static int hpsa_allocate_ioaccel2_sg_chain_blocks(struct ctlr_info *h)
1886 if (h->chainsize <= 0)
1889 h->ioaccel2_cmd_sg_list =
1890 kzalloc(sizeof(*h->ioaccel2_cmd_sg_list) * h->nr_cmds,
1892 if (!h->ioaccel2_cmd_sg_list)
1894 for (i = 0; i < h->nr_cmds; i++) {
1895 h->ioaccel2_cmd_sg_list[i] =
1896 kmalloc(sizeof(*h->ioaccel2_cmd_sg_list[i]) *
1897 h->maxsgentries, GFP_KERNEL);
1898 if (!h->ioaccel2_cmd_sg_list[i])
1904 hpsa_free_ioaccel2_sg_chain_blocks(h);
1908 static void hpsa_free_sg_chain_blocks(struct ctlr_info *h)
1912 if (!h->cmd_sg_list)
1914 for (i = 0; i < h->nr_cmds; i++) {
1915 kfree(h->cmd_sg_list[i]);
1916 h->cmd_sg_list[i] = NULL;
1918 kfree(h->cmd_sg_list);
1919 h->cmd_sg_list = NULL;
1922 static int hpsa_alloc_sg_chain_blocks(struct ctlr_info *h)
1926 if (h->chainsize <= 0)
1929 h->cmd_sg_list = kzalloc(sizeof(*h->cmd_sg_list) * h->nr_cmds,
1931 if (!h->cmd_sg_list) {
1932 dev_err(&h->pdev->dev, "Failed to allocate SG list\n");
1935 for (i = 0; i < h->nr_cmds; i++) {
1936 h->cmd_sg_list[i] = kmalloc(sizeof(*h->cmd_sg_list[i]) *
1937 h->chainsize, GFP_KERNEL);
1938 if (!h->cmd_sg_list[i]) {
1939 dev_err(&h->pdev->dev, "Failed to allocate cmd SG\n");
1946 hpsa_free_sg_chain_blocks(h);
1950 static int hpsa_map_ioaccel2_sg_chain_block(struct ctlr_info *h,
1951 struct io_accel2_cmd *cp, struct CommandList *c)
1953 struct ioaccel2_sg_element *chain_block;
1957 chain_block = h->ioaccel2_cmd_sg_list[c->cmdindex];
1958 chain_size = le32_to_cpu(cp->data_len);
1959 temp64 = pci_map_single(h->pdev, chain_block, chain_size,
1961 if (dma_mapping_error(&h->pdev->dev, temp64)) {
1962 /* prevent subsequent unmapping */
1963 cp->sg->address = 0;
1966 cp->sg->address = cpu_to_le64(temp64);
1970 static void hpsa_unmap_ioaccel2_sg_chain_block(struct ctlr_info *h,
1971 struct io_accel2_cmd *cp)
1973 struct ioaccel2_sg_element *chain_sg;
1978 temp64 = le64_to_cpu(chain_sg->address);
1979 chain_size = le32_to_cpu(cp->data_len);
1980 pci_unmap_single(h->pdev, temp64, chain_size, PCI_DMA_TODEVICE);
1983 static int hpsa_map_sg_chain_block(struct ctlr_info *h,
1984 struct CommandList *c)
1986 struct SGDescriptor *chain_sg, *chain_block;
1990 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
1991 chain_block = h->cmd_sg_list[c->cmdindex];
1992 chain_sg->Ext = cpu_to_le32(HPSA_SG_CHAIN);
1993 chain_len = sizeof(*chain_sg) *
1994 (le16_to_cpu(c->Header.SGTotal) - h->max_cmd_sg_entries);
1995 chain_sg->Len = cpu_to_le32(chain_len);
1996 temp64 = pci_map_single(h->pdev, chain_block, chain_len,
1998 if (dma_mapping_error(&h->pdev->dev, temp64)) {
1999 /* prevent subsequent unmapping */
2000 chain_sg->Addr = cpu_to_le64(0);
2003 chain_sg->Addr = cpu_to_le64(temp64);
2007 static void hpsa_unmap_sg_chain_block(struct ctlr_info *h,
2008 struct CommandList *c)
2010 struct SGDescriptor *chain_sg;
2012 if (le16_to_cpu(c->Header.SGTotal) <= h->max_cmd_sg_entries)
2015 chain_sg = &c->SG[h->max_cmd_sg_entries - 1];
2016 pci_unmap_single(h->pdev, le64_to_cpu(chain_sg->Addr),
2017 le32_to_cpu(chain_sg->Len), PCI_DMA_TODEVICE);
2021 /* Decode the various types of errors on ioaccel2 path.
2022 * Return 1 for any error that should generate a RAID path retry.
2023 * Return 0 for errors that don't require a RAID path retry.
2025 static int handle_ioaccel_mode2_error(struct ctlr_info *h,
2026 struct CommandList *c,
2027 struct scsi_cmnd *cmd,
2028 struct io_accel2_cmd *c2)
2032 u32 ioaccel2_resid = 0;
2034 switch (c2->error_data.serv_response) {
2035 case IOACCEL2_SERV_RESPONSE_COMPLETE:
2036 switch (c2->error_data.status) {
2037 case IOACCEL2_STATUS_SR_TASK_COMP_GOOD:
2039 case IOACCEL2_STATUS_SR_TASK_COMP_CHK_COND:
2040 cmd->result |= SAM_STAT_CHECK_CONDITION;
2041 if (c2->error_data.data_present !=
2042 IOACCEL2_SENSE_DATA_PRESENT) {
2043 memset(cmd->sense_buffer, 0,
2044 SCSI_SENSE_BUFFERSIZE);
2047 /* copy the sense data */
2048 data_len = c2->error_data.sense_data_len;
2049 if (data_len > SCSI_SENSE_BUFFERSIZE)
2050 data_len = SCSI_SENSE_BUFFERSIZE;
2051 if (data_len > sizeof(c2->error_data.sense_data_buff))
2053 sizeof(c2->error_data.sense_data_buff);
2054 memcpy(cmd->sense_buffer,
2055 c2->error_data.sense_data_buff, data_len);
2058 case IOACCEL2_STATUS_SR_TASK_COMP_BUSY:
2061 case IOACCEL2_STATUS_SR_TASK_COMP_RES_CON:
2064 case IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL:
2067 case IOACCEL2_STATUS_SR_TASK_COMP_ABORTED:
2075 case IOACCEL2_SERV_RESPONSE_FAILURE:
2076 switch (c2->error_data.status) {
2077 case IOACCEL2_STATUS_SR_IO_ERROR:
2078 case IOACCEL2_STATUS_SR_IO_ABORTED:
2079 case IOACCEL2_STATUS_SR_OVERRUN:
2082 case IOACCEL2_STATUS_SR_UNDERRUN:
2083 cmd->result = (DID_OK << 16); /* host byte */
2084 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
2085 ioaccel2_resid = get_unaligned_le32(
2086 &c2->error_data.resid_cnt[0]);
2087 scsi_set_resid(cmd, ioaccel2_resid);
2089 case IOACCEL2_STATUS_SR_NO_PATH_TO_DEVICE:
2090 case IOACCEL2_STATUS_SR_INVALID_DEVICE:
2091 case IOACCEL2_STATUS_SR_IOACCEL_DISABLED:
2092 /* We will get an event from ctlr to trigger rescan */
2099 case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE:
2101 case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS:
2103 case IOACCEL2_SERV_RESPONSE_TMF_REJECTED:
2106 case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN:
2113 return retry; /* retry on raid path? */
2116 static void hpsa_cmd_resolve_events(struct ctlr_info *h,
2117 struct CommandList *c)
2119 bool do_wake = false;
2122 * Prevent the following race in the abort handler:
2124 * 1. LLD is requested to abort a SCSI command
2125 * 2. The SCSI command completes
2126 * 3. The struct CommandList associated with step 2 is made available
2127 * 4. New I/O request to LLD to another LUN re-uses struct CommandList
2128 * 5. Abort handler follows scsi_cmnd->host_scribble and
2129 * finds struct CommandList and tries to aborts it
2130 * Now we have aborted the wrong command.
2132 * Reset c->scsi_cmd here so that the abort or reset handler will know
2133 * this command has completed. Then, check to see if the handler is
2134 * waiting for this command, and, if so, wake it.
2136 c->scsi_cmd = SCSI_CMD_IDLE;
2137 mb(); /* Declare command idle before checking for pending events. */
2138 if (c->abort_pending) {
2140 c->abort_pending = false;
2142 if (c->reset_pending) {
2143 unsigned long flags;
2144 struct hpsa_scsi_dev_t *dev;
2147 * There appears to be a reset pending; lock the lock and
2148 * reconfirm. If so, then decrement the count of outstanding
2149 * commands and wake the reset command if this is the last one.
2151 spin_lock_irqsave(&h->lock, flags);
2152 dev = c->reset_pending; /* Re-fetch under the lock. */
2153 if (dev && atomic_dec_and_test(&dev->reset_cmds_out))
2155 c->reset_pending = NULL;
2156 spin_unlock_irqrestore(&h->lock, flags);
2160 wake_up_all(&h->event_sync_wait_queue);
2163 static void hpsa_cmd_resolve_and_free(struct ctlr_info *h,
2164 struct CommandList *c)
2166 hpsa_cmd_resolve_events(h, c);
2167 cmd_tagged_free(h, c);
2170 static void hpsa_cmd_free_and_done(struct ctlr_info *h,
2171 struct CommandList *c, struct scsi_cmnd *cmd)
2173 hpsa_cmd_resolve_and_free(h, c);
2174 cmd->scsi_done(cmd);
2177 static void hpsa_retry_cmd(struct ctlr_info *h, struct CommandList *c)
2179 INIT_WORK(&c->work, hpsa_command_resubmit_worker);
2180 queue_work_on(raw_smp_processor_id(), h->resubmit_wq, &c->work);
2183 static void hpsa_set_scsi_cmd_aborted(struct scsi_cmnd *cmd)
2185 cmd->result = DID_ABORT << 16;
2188 static void hpsa_cmd_abort_and_free(struct ctlr_info *h, struct CommandList *c,
2189 struct scsi_cmnd *cmd)
2191 hpsa_set_scsi_cmd_aborted(cmd);
2192 dev_warn(&h->pdev->dev, "CDB %16phN was aborted with status 0x%x\n",
2193 c->Request.CDB, c->err_info->ScsiStatus);
2194 hpsa_cmd_resolve_and_free(h, c);
2197 static void process_ioaccel2_completion(struct ctlr_info *h,
2198 struct CommandList *c, struct scsi_cmnd *cmd,
2199 struct hpsa_scsi_dev_t *dev)
2201 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
2203 /* check for good status */
2204 if (likely(c2->error_data.serv_response == 0 &&
2205 c2->error_data.status == 0))
2206 return hpsa_cmd_free_and_done(h, c, cmd);
2209 * Any RAID offload error results in retry which will use
2210 * the normal I/O path so the controller can handle whatever's
2213 if (is_logical_dev_addr_mode(dev->scsi3addr) &&
2214 c2->error_data.serv_response ==
2215 IOACCEL2_SERV_RESPONSE_FAILURE) {
2216 if (c2->error_data.status ==
2217 IOACCEL2_STATUS_SR_IOACCEL_DISABLED)
2218 dev->offload_enabled = 0;
2220 return hpsa_retry_cmd(h, c);
2223 if (handle_ioaccel_mode2_error(h, c, cmd, c2))
2224 return hpsa_retry_cmd(h, c);
2226 return hpsa_cmd_free_and_done(h, c, cmd);
2229 /* Returns 0 on success, < 0 otherwise. */
2230 static int hpsa_evaluate_tmf_status(struct ctlr_info *h,
2231 struct CommandList *cp)
2233 u8 tmf_status = cp->err_info->ScsiStatus;
2235 switch (tmf_status) {
2236 case CISS_TMF_COMPLETE:
2238 * CISS_TMF_COMPLETE never happens, instead,
2239 * ei->CommandStatus == 0 for this case.
2241 case CISS_TMF_SUCCESS:
2243 case CISS_TMF_INVALID_FRAME:
2244 case CISS_TMF_NOT_SUPPORTED:
2245 case CISS_TMF_FAILED:
2246 case CISS_TMF_WRONG_LUN:
2247 case CISS_TMF_OVERLAPPED_TAG:
2250 dev_warn(&h->pdev->dev, "Unknown TMF status: 0x%02x\n",
2257 static void complete_scsi_command(struct CommandList *cp)
2259 struct scsi_cmnd *cmd;
2260 struct ctlr_info *h;
2261 struct ErrorInfo *ei;
2262 struct hpsa_scsi_dev_t *dev;
2263 struct io_accel2_cmd *c2;
2266 u8 asc; /* additional sense code */
2267 u8 ascq; /* additional sense code qualifier */
2268 unsigned long sense_data_size;
2273 dev = cmd->device->hostdata;
2274 c2 = &h->ioaccel2_cmd_pool[cp->cmdindex];
2276 scsi_dma_unmap(cmd); /* undo the DMA mappings */
2277 if ((cp->cmd_type == CMD_SCSI) &&
2278 (le16_to_cpu(cp->Header.SGTotal) > h->max_cmd_sg_entries))
2279 hpsa_unmap_sg_chain_block(h, cp);
2281 if ((cp->cmd_type == CMD_IOACCEL2) &&
2282 (c2->sg[0].chain_indicator == IOACCEL2_CHAIN))
2283 hpsa_unmap_ioaccel2_sg_chain_block(h, c2);
2285 cmd->result = (DID_OK << 16); /* host byte */
2286 cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */
2288 if (cp->cmd_type == CMD_IOACCEL2 || cp->cmd_type == CMD_IOACCEL1)
2289 atomic_dec(&cp->phys_disk->ioaccel_cmds_out);
2292 * We check for lockup status here as it may be set for
2293 * CMD_SCSI, CMD_IOACCEL1 and CMD_IOACCEL2 commands by
2294 * fail_all_oustanding_cmds()
2296 if (unlikely(ei->CommandStatus == CMD_CTLR_LOCKUP)) {
2297 /* DID_NO_CONNECT will prevent a retry */
2298 cmd->result = DID_NO_CONNECT << 16;
2299 return hpsa_cmd_free_and_done(h, cp, cmd);
2302 if ((unlikely(hpsa_is_pending_event(cp)))) {
2303 if (cp->reset_pending)
2304 return hpsa_cmd_resolve_and_free(h, cp);
2305 if (cp->abort_pending)
2306 return hpsa_cmd_abort_and_free(h, cp, cmd);
2309 if (cp->cmd_type == CMD_IOACCEL2)
2310 return process_ioaccel2_completion(h, cp, cmd, dev);
2312 scsi_set_resid(cmd, ei->ResidualCnt);
2313 if (ei->CommandStatus == 0)
2314 return hpsa_cmd_free_and_done(h, cp, cmd);
2316 /* For I/O accelerator commands, copy over some fields to the normal
2317 * CISS header used below for error handling.
2319 if (cp->cmd_type == CMD_IOACCEL1) {
2320 struct io_accel1_cmd *c = &h->ioaccel_cmd_pool[cp->cmdindex];
2321 cp->Header.SGList = scsi_sg_count(cmd);
2322 cp->Header.SGTotal = cpu_to_le16(cp->Header.SGList);
2323 cp->Request.CDBLen = le16_to_cpu(c->io_flags) &
2324 IOACCEL1_IOFLAGS_CDBLEN_MASK;
2325 cp->Header.tag = c->tag;
2326 memcpy(cp->Header.LUN.LunAddrBytes, c->CISS_LUN, 8);
2327 memcpy(cp->Request.CDB, c->CDB, cp->Request.CDBLen);
2329 /* Any RAID offload error results in retry which will use
2330 * the normal I/O path so the controller can handle whatever's
2333 if (is_logical_dev_addr_mode(dev->scsi3addr)) {
2334 if (ei->CommandStatus == CMD_IOACCEL_DISABLED)
2335 dev->offload_enabled = 0;
2336 return hpsa_retry_cmd(h, cp);
2340 /* an error has occurred */
2341 switch (ei->CommandStatus) {
2343 case CMD_TARGET_STATUS:
2344 cmd->result |= ei->ScsiStatus;
2345 /* copy the sense data */
2346 if (SCSI_SENSE_BUFFERSIZE < sizeof(ei->SenseInfo))
2347 sense_data_size = SCSI_SENSE_BUFFERSIZE;
2349 sense_data_size = sizeof(ei->SenseInfo);
2350 if (ei->SenseLen < sense_data_size)
2351 sense_data_size = ei->SenseLen;
2352 memcpy(cmd->sense_buffer, ei->SenseInfo, sense_data_size);
2354 decode_sense_data(ei->SenseInfo, sense_data_size,
2355 &sense_key, &asc, &ascq);
2356 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION) {
2357 if (sense_key == ABORTED_COMMAND) {
2358 cmd->result |= DID_SOFT_ERROR << 16;
2363 /* Problem was not a check condition
2364 * Pass it up to the upper layers...
2366 if (ei->ScsiStatus) {
2367 dev_warn(&h->pdev->dev, "cp %p has status 0x%x "
2368 "Sense: 0x%x, ASC: 0x%x, ASCQ: 0x%x, "
2369 "Returning result: 0x%x\n",
2371 sense_key, asc, ascq,
2373 } else { /* scsi status is zero??? How??? */
2374 dev_warn(&h->pdev->dev, "cp %p SCSI status was 0. "
2375 "Returning no connection.\n", cp),
2377 /* Ordinarily, this case should never happen,
2378 * but there is a bug in some released firmware
2379 * revisions that allows it to happen if, for
2380 * example, a 4100 backplane loses power and
2381 * the tape drive is in it. We assume that
2382 * it's a fatal error of some kind because we
2383 * can't show that it wasn't. We will make it
2384 * look like selection timeout since that is
2385 * the most common reason for this to occur,
2386 * and it's severe enough.
2389 cmd->result = DID_NO_CONNECT << 16;
2393 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
2395 case CMD_DATA_OVERRUN:
2396 dev_warn(&h->pdev->dev,
2397 "CDB %16phN data overrun\n", cp->Request.CDB);
2400 /* print_bytes(cp, sizeof(*cp), 1, 0);
2402 /* We get CMD_INVALID if you address a non-existent device
2403 * instead of a selection timeout (no response). You will
2404 * see this if you yank out a drive, then try to access it.
2405 * This is kind of a shame because it means that any other
2406 * CMD_INVALID (e.g. driver bug) will get interpreted as a
2407 * missing target. */
2408 cmd->result = DID_NO_CONNECT << 16;
2411 case CMD_PROTOCOL_ERR:
2412 cmd->result = DID_ERROR << 16;
2413 dev_warn(&h->pdev->dev, "CDB %16phN : protocol error\n",
2416 case CMD_HARDWARE_ERR:
2417 cmd->result = DID_ERROR << 16;
2418 dev_warn(&h->pdev->dev, "CDB %16phN : hardware error\n",
2421 case CMD_CONNECTION_LOST:
2422 cmd->result = DID_ERROR << 16;
2423 dev_warn(&h->pdev->dev, "CDB %16phN : connection lost\n",
2427 /* Return now to avoid calling scsi_done(). */
2428 return hpsa_cmd_abort_and_free(h, cp, cmd);
2429 case CMD_ABORT_FAILED:
2430 cmd->result = DID_ERROR << 16;
2431 dev_warn(&h->pdev->dev, "CDB %16phN : abort failed\n",
2434 case CMD_UNSOLICITED_ABORT:
2435 cmd->result = DID_SOFT_ERROR << 16; /* retry the command */
2436 dev_warn(&h->pdev->dev, "CDB %16phN : unsolicited abort\n",
2440 cmd->result = DID_TIME_OUT << 16;
2441 dev_warn(&h->pdev->dev, "CDB %16phN timed out\n",
2444 case CMD_UNABORTABLE:
2445 cmd->result = DID_ERROR << 16;
2446 dev_warn(&h->pdev->dev, "Command unabortable\n");
2448 case CMD_TMF_STATUS:
2449 if (hpsa_evaluate_tmf_status(h, cp)) /* TMF failed? */
2450 cmd->result = DID_ERROR << 16;
2452 case CMD_IOACCEL_DISABLED:
2453 /* This only handles the direct pass-through case since RAID
2454 * offload is handled above. Just attempt a retry.
2456 cmd->result = DID_SOFT_ERROR << 16;
2457 dev_warn(&h->pdev->dev,
2458 "cp %p had HP SSD Smart Path error\n", cp);
2461 cmd->result = DID_ERROR << 16;
2462 dev_warn(&h->pdev->dev, "cp %p returned unknown status %x\n",
2463 cp, ei->CommandStatus);
2466 return hpsa_cmd_free_and_done(h, cp, cmd);
2469 static void hpsa_pci_unmap(struct pci_dev *pdev,
2470 struct CommandList *c, int sg_used, int data_direction)
2474 for (i = 0; i < sg_used; i++)
2475 pci_unmap_single(pdev, (dma_addr_t) le64_to_cpu(c->SG[i].Addr),
2476 le32_to_cpu(c->SG[i].Len),
2480 static int hpsa_map_one(struct pci_dev *pdev,
2481 struct CommandList *cp,
2488 if (buflen == 0 || data_direction == PCI_DMA_NONE) {
2489 cp->Header.SGList = 0;
2490 cp->Header.SGTotal = cpu_to_le16(0);
2494 addr64 = pci_map_single(pdev, buf, buflen, data_direction);
2495 if (dma_mapping_error(&pdev->dev, addr64)) {
2496 /* Prevent subsequent unmap of something never mapped */
2497 cp->Header.SGList = 0;
2498 cp->Header.SGTotal = cpu_to_le16(0);
2501 cp->SG[0].Addr = cpu_to_le64(addr64);
2502 cp->SG[0].Len = cpu_to_le32(buflen);
2503 cp->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* we are not chaining */
2504 cp->Header.SGList = 1; /* no. SGs contig in this cmd */
2505 cp->Header.SGTotal = cpu_to_le16(1); /* total sgs in cmd list */
2509 #define NO_TIMEOUT ((unsigned long) -1)
2510 #define DEFAULT_TIMEOUT 30000 /* milliseconds */
2511 static int hpsa_scsi_do_simple_cmd_core(struct ctlr_info *h,
2512 struct CommandList *c, int reply_queue, unsigned long timeout_msecs)
2514 DECLARE_COMPLETION_ONSTACK(wait);
2517 __enqueue_cmd_and_start_io(h, c, reply_queue);
2518 if (timeout_msecs == NO_TIMEOUT) {
2519 /* TODO: get rid of this no-timeout thing */
2520 wait_for_completion_io(&wait);
2523 if (!wait_for_completion_io_timeout(&wait,
2524 msecs_to_jiffies(timeout_msecs))) {
2525 dev_warn(&h->pdev->dev, "Command timed out.\n");
2531 static int hpsa_scsi_do_simple_cmd(struct ctlr_info *h, struct CommandList *c,
2532 int reply_queue, unsigned long timeout_msecs)
2534 if (unlikely(lockup_detected(h))) {
2535 c->err_info->CommandStatus = CMD_CTLR_LOCKUP;
2538 return hpsa_scsi_do_simple_cmd_core(h, c, reply_queue, timeout_msecs);
2541 static u32 lockup_detected(struct ctlr_info *h)
2544 u32 rc, *lockup_detected;
2547 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
2548 rc = *lockup_detected;
2553 #define MAX_DRIVER_CMD_RETRIES 25
2554 static int hpsa_scsi_do_simple_cmd_with_retry(struct ctlr_info *h,
2555 struct CommandList *c, int data_direction, unsigned long timeout_msecs)
2557 int backoff_time = 10, retry_count = 0;
2561 memset(c->err_info, 0, sizeof(*c->err_info));
2562 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE,
2567 if (retry_count > 3) {
2568 msleep(backoff_time);
2569 if (backoff_time < 1000)
2572 } while ((check_for_unit_attention(h, c) ||
2573 check_for_busy(h, c)) &&
2574 retry_count <= MAX_DRIVER_CMD_RETRIES);
2575 hpsa_pci_unmap(h->pdev, c, 1, data_direction);
2576 if (retry_count > MAX_DRIVER_CMD_RETRIES)
2581 static void hpsa_print_cmd(struct ctlr_info *h, char *txt,
2582 struct CommandList *c)
2584 const u8 *cdb = c->Request.CDB;
2585 const u8 *lun = c->Header.LUN.LunAddrBytes;
2587 dev_warn(&h->pdev->dev, "%s: LUN:%02x%02x%02x%02x%02x%02x%02x%02x"
2588 " CDB:%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\n",
2589 txt, lun[0], lun[1], lun[2], lun[3],
2590 lun[4], lun[5], lun[6], lun[7],
2591 cdb[0], cdb[1], cdb[2], cdb[3],
2592 cdb[4], cdb[5], cdb[6], cdb[7],
2593 cdb[8], cdb[9], cdb[10], cdb[11],
2594 cdb[12], cdb[13], cdb[14], cdb[15]);
2597 static void hpsa_scsi_interpret_error(struct ctlr_info *h,
2598 struct CommandList *cp)
2600 const struct ErrorInfo *ei = cp->err_info;
2601 struct device *d = &cp->h->pdev->dev;
2602 u8 sense_key, asc, ascq;
2605 switch (ei->CommandStatus) {
2606 case CMD_TARGET_STATUS:
2607 if (ei->SenseLen > sizeof(ei->SenseInfo))
2608 sense_len = sizeof(ei->SenseInfo);
2610 sense_len = ei->SenseLen;
2611 decode_sense_data(ei->SenseInfo, sense_len,
2612 &sense_key, &asc, &ascq);
2613 hpsa_print_cmd(h, "SCSI status", cp);
2614 if (ei->ScsiStatus == SAM_STAT_CHECK_CONDITION)
2615 dev_warn(d, "SCSI Status = 02, Sense key = 0x%02x, ASC = 0x%02x, ASCQ = 0x%02x\n",
2616 sense_key, asc, ascq);
2618 dev_warn(d, "SCSI Status = 0x%02x\n", ei->ScsiStatus);
2619 if (ei->ScsiStatus == 0)
2620 dev_warn(d, "SCSI status is abnormally zero. "
2621 "(probably indicates selection timeout "
2622 "reported incorrectly due to a known "
2623 "firmware bug, circa July, 2001.)\n");
2625 case CMD_DATA_UNDERRUN: /* let mid layer handle it. */
2627 case CMD_DATA_OVERRUN:
2628 hpsa_print_cmd(h, "overrun condition", cp);
2631 /* controller unfortunately reports SCSI passthru's
2632 * to non-existent targets as invalid commands.
2634 hpsa_print_cmd(h, "invalid command", cp);
2635 dev_warn(d, "probably means device no longer present\n");
2638 case CMD_PROTOCOL_ERR:
2639 hpsa_print_cmd(h, "protocol error", cp);
2641 case CMD_HARDWARE_ERR:
2642 hpsa_print_cmd(h, "hardware error", cp);
2644 case CMD_CONNECTION_LOST:
2645 hpsa_print_cmd(h, "connection lost", cp);
2648 hpsa_print_cmd(h, "aborted", cp);
2650 case CMD_ABORT_FAILED:
2651 hpsa_print_cmd(h, "abort failed", cp);
2653 case CMD_UNSOLICITED_ABORT:
2654 hpsa_print_cmd(h, "unsolicited abort", cp);
2657 hpsa_print_cmd(h, "timed out", cp);
2659 case CMD_UNABORTABLE:
2660 hpsa_print_cmd(h, "unabortable", cp);
2662 case CMD_CTLR_LOCKUP:
2663 hpsa_print_cmd(h, "controller lockup detected", cp);
2666 hpsa_print_cmd(h, "unknown status", cp);
2667 dev_warn(d, "Unknown command status %x\n",
2672 static int hpsa_scsi_do_inquiry(struct ctlr_info *h, unsigned char *scsi3addr,
2673 u16 page, unsigned char *buf,
2674 unsigned char bufsize)
2677 struct CommandList *c;
2678 struct ErrorInfo *ei;
2682 if (fill_cmd(c, HPSA_INQUIRY, h, buf, bufsize,
2683 page, scsi3addr, TYPE_CMD)) {
2687 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
2688 PCI_DMA_FROMDEVICE, NO_TIMEOUT);
2692 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
2693 hpsa_scsi_interpret_error(h, c);
2701 static int hpsa_send_reset(struct ctlr_info *h, unsigned char *scsi3addr,
2702 u8 reset_type, int reply_queue)
2705 struct CommandList *c;
2706 struct ErrorInfo *ei;
2711 /* fill_cmd can't fail here, no data buffer to map. */
2712 (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0,
2713 scsi3addr, TYPE_MSG);
2714 c->Request.CDB[1] = reset_type; /* fill_cmd defaults to LUN reset */
2715 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
2717 dev_warn(&h->pdev->dev, "Failed to send reset command\n");
2720 /* no unmap needed here because no data xfer. */
2723 if (ei->CommandStatus != 0) {
2724 hpsa_scsi_interpret_error(h, c);
2732 static bool hpsa_cmd_dev_match(struct ctlr_info *h, struct CommandList *c,
2733 struct hpsa_scsi_dev_t *dev,
2734 unsigned char *scsi3addr)
2738 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
2739 struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2;
2741 if (hpsa_is_cmd_idle(c))
2744 switch (c->cmd_type) {
2746 case CMD_IOCTL_PEND:
2747 match = !memcmp(scsi3addr, &c->Header.LUN.LunAddrBytes,
2748 sizeof(c->Header.LUN.LunAddrBytes));
2753 if (c->phys_disk == dev) {
2754 /* HBA mode match */
2757 /* Possible RAID mode -- check each phys dev. */
2758 /* FIXME: Do we need to take out a lock here? If
2759 * so, we could just call hpsa_get_pdisk_of_ioaccel2()
2761 for (i = 0; i < dev->nphysical_disks && !match; i++) {
2762 /* FIXME: an alternate test might be
2764 * match = dev->phys_disk[i]->ioaccel_handle
2765 * == c2->scsi_nexus; */
2766 match = dev->phys_disk[i] == c->phys_disk;
2772 for (i = 0; i < dev->nphysical_disks && !match; i++) {
2773 match = dev->phys_disk[i]->ioaccel_handle ==
2774 le32_to_cpu(ac->it_nexus);
2778 case 0: /* The command is in the middle of being initialized. */
2783 dev_err(&h->pdev->dev, "unexpected cmd_type: %d\n",
2791 static int hpsa_do_reset(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev,
2792 unsigned char *scsi3addr, u8 reset_type, int reply_queue)
2797 /* We can really only handle one reset at a time */
2798 if (mutex_lock_interruptible(&h->reset_mutex) == -EINTR) {
2799 dev_warn(&h->pdev->dev, "concurrent reset wait interrupted.\n");
2803 BUG_ON(atomic_read(&dev->reset_cmds_out) != 0);
2805 for (i = 0; i < h->nr_cmds; i++) {
2806 struct CommandList *c = h->cmd_pool + i;
2807 int refcount = atomic_inc_return(&c->refcount);
2809 if (refcount > 1 && hpsa_cmd_dev_match(h, c, dev, scsi3addr)) {
2810 unsigned long flags;
2813 * Mark the target command as having a reset pending,
2814 * then lock a lock so that the command cannot complete
2815 * while we're considering it. If the command is not
2816 * idle then count it; otherwise revoke the event.
2818 c->reset_pending = dev;
2819 spin_lock_irqsave(&h->lock, flags); /* Implied MB */
2820 if (!hpsa_is_cmd_idle(c))
2821 atomic_inc(&dev->reset_cmds_out);
2823 c->reset_pending = NULL;
2824 spin_unlock_irqrestore(&h->lock, flags);
2830 rc = hpsa_send_reset(h, scsi3addr, reset_type, reply_queue);
2832 wait_event(h->event_sync_wait_queue,
2833 atomic_read(&dev->reset_cmds_out) == 0 ||
2834 lockup_detected(h));
2836 if (unlikely(lockup_detected(h))) {
2837 dev_warn(&h->pdev->dev,
2838 "Controller lockup detected during reset wait\n");
2843 atomic_set(&dev->reset_cmds_out, 0);
2845 mutex_unlock(&h->reset_mutex);
2849 static void hpsa_get_raid_level(struct ctlr_info *h,
2850 unsigned char *scsi3addr, unsigned char *raid_level)
2855 *raid_level = RAID_UNKNOWN;
2856 buf = kzalloc(64, GFP_KERNEL);
2859 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | 0xC1, buf, 64);
2861 *raid_level = buf[8];
2862 if (*raid_level > RAID_UNKNOWN)
2863 *raid_level = RAID_UNKNOWN;
2868 #define HPSA_MAP_DEBUG
2869 #ifdef HPSA_MAP_DEBUG
2870 static void hpsa_debug_map_buff(struct ctlr_info *h, int rc,
2871 struct raid_map_data *map_buff)
2873 struct raid_map_disk_data *dd = &map_buff->data[0];
2875 u16 map_cnt, row_cnt, disks_per_row;
2880 /* Show details only if debugging has been activated. */
2881 if (h->raid_offload_debug < 2)
2884 dev_info(&h->pdev->dev, "structure_size = %u\n",
2885 le32_to_cpu(map_buff->structure_size));
2886 dev_info(&h->pdev->dev, "volume_blk_size = %u\n",
2887 le32_to_cpu(map_buff->volume_blk_size));
2888 dev_info(&h->pdev->dev, "volume_blk_cnt = 0x%llx\n",
2889 le64_to_cpu(map_buff->volume_blk_cnt));
2890 dev_info(&h->pdev->dev, "physicalBlockShift = %u\n",
2891 map_buff->phys_blk_shift);
2892 dev_info(&h->pdev->dev, "parity_rotation_shift = %u\n",
2893 map_buff->parity_rotation_shift);
2894 dev_info(&h->pdev->dev, "strip_size = %u\n",
2895 le16_to_cpu(map_buff->strip_size));
2896 dev_info(&h->pdev->dev, "disk_starting_blk = 0x%llx\n",
2897 le64_to_cpu(map_buff->disk_starting_blk));
2898 dev_info(&h->pdev->dev, "disk_blk_cnt = 0x%llx\n",
2899 le64_to_cpu(map_buff->disk_blk_cnt));
2900 dev_info(&h->pdev->dev, "data_disks_per_row = %u\n",
2901 le16_to_cpu(map_buff->data_disks_per_row));
2902 dev_info(&h->pdev->dev, "metadata_disks_per_row = %u\n",
2903 le16_to_cpu(map_buff->metadata_disks_per_row));
2904 dev_info(&h->pdev->dev, "row_cnt = %u\n",
2905 le16_to_cpu(map_buff->row_cnt));
2906 dev_info(&h->pdev->dev, "layout_map_count = %u\n",
2907 le16_to_cpu(map_buff->layout_map_count));
2908 dev_info(&h->pdev->dev, "flags = 0x%x\n",
2909 le16_to_cpu(map_buff->flags));
2910 dev_info(&h->pdev->dev, "encrypytion = %s\n",
2911 le16_to_cpu(map_buff->flags) &
2912 RAID_MAP_FLAG_ENCRYPT_ON ? "ON" : "OFF");
2913 dev_info(&h->pdev->dev, "dekindex = %u\n",
2914 le16_to_cpu(map_buff->dekindex));
2915 map_cnt = le16_to_cpu(map_buff->layout_map_count);
2916 for (map = 0; map < map_cnt; map++) {
2917 dev_info(&h->pdev->dev, "Map%u:\n", map);
2918 row_cnt = le16_to_cpu(map_buff->row_cnt);
2919 for (row = 0; row < row_cnt; row++) {
2920 dev_info(&h->pdev->dev, " Row%u:\n", row);
2922 le16_to_cpu(map_buff->data_disks_per_row);
2923 for (col = 0; col < disks_per_row; col++, dd++)
2924 dev_info(&h->pdev->dev,
2925 " D%02u: h=0x%04x xor=%u,%u\n",
2926 col, dd->ioaccel_handle,
2927 dd->xor_mult[0], dd->xor_mult[1]);
2929 le16_to_cpu(map_buff->metadata_disks_per_row);
2930 for (col = 0; col < disks_per_row; col++, dd++)
2931 dev_info(&h->pdev->dev,
2932 " M%02u: h=0x%04x xor=%u,%u\n",
2933 col, dd->ioaccel_handle,
2934 dd->xor_mult[0], dd->xor_mult[1]);
2939 static void hpsa_debug_map_buff(__attribute__((unused)) struct ctlr_info *h,
2940 __attribute__((unused)) int rc,
2941 __attribute__((unused)) struct raid_map_data *map_buff)
2946 static int hpsa_get_raid_map(struct ctlr_info *h,
2947 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
2950 struct CommandList *c;
2951 struct ErrorInfo *ei;
2955 if (fill_cmd(c, HPSA_GET_RAID_MAP, h, &this_device->raid_map,
2956 sizeof(this_device->raid_map), 0,
2957 scsi3addr, TYPE_CMD)) {
2958 dev_warn(&h->pdev->dev, "hpsa_get_raid_map fill_cmd failed\n");
2962 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
2963 PCI_DMA_FROMDEVICE, NO_TIMEOUT);
2967 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
2968 hpsa_scsi_interpret_error(h, c);
2974 /* @todo in the future, dynamically allocate RAID map memory */
2975 if (le32_to_cpu(this_device->raid_map.structure_size) >
2976 sizeof(this_device->raid_map)) {
2977 dev_warn(&h->pdev->dev, "RAID map size is too large!\n");
2980 hpsa_debug_map_buff(h, rc, &this_device->raid_map);
2987 static int hpsa_bmic_id_physical_device(struct ctlr_info *h,
2988 unsigned char scsi3addr[], u16 bmic_device_index,
2989 struct bmic_identify_physical_device *buf, size_t bufsize)
2992 struct CommandList *c;
2993 struct ErrorInfo *ei;
2996 rc = fill_cmd(c, BMIC_IDENTIFY_PHYSICAL_DEVICE, h, buf, bufsize,
2997 0, RAID_CTLR_LUNID, TYPE_CMD);
3001 c->Request.CDB[2] = bmic_device_index & 0xff;
3002 c->Request.CDB[9] = (bmic_device_index >> 8) & 0xff;
3004 hpsa_scsi_do_simple_cmd_with_retry(h, c, PCI_DMA_FROMDEVICE,
3007 if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) {
3008 hpsa_scsi_interpret_error(h, c);
3016 static int hpsa_vpd_page_supported(struct ctlr_info *h,
3017 unsigned char scsi3addr[], u8 page)
3022 unsigned char *buf, bufsize;
3024 buf = kzalloc(256, GFP_KERNEL);
3028 /* Get the size of the page list first */
3029 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3030 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
3031 buf, HPSA_VPD_HEADER_SZ);
3033 goto exit_unsupported;
3035 if ((pages + HPSA_VPD_HEADER_SZ) <= 255)
3036 bufsize = pages + HPSA_VPD_HEADER_SZ;
3040 /* Get the whole VPD page list */
3041 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3042 VPD_PAGE | HPSA_VPD_SUPPORTED_PAGES,
3045 goto exit_unsupported;
3048 for (i = 1; i <= pages; i++)
3049 if (buf[3 + i] == page)
3050 goto exit_supported;
3059 static void hpsa_get_ioaccel_status(struct ctlr_info *h,
3060 unsigned char *scsi3addr, struct hpsa_scsi_dev_t *this_device)
3066 this_device->offload_config = 0;
3067 this_device->offload_enabled = 0;
3068 this_device->offload_to_be_enabled = 0;
3070 buf = kzalloc(64, GFP_KERNEL);
3073 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_IOACCEL_STATUS))
3075 rc = hpsa_scsi_do_inquiry(h, scsi3addr,
3076 VPD_PAGE | HPSA_VPD_LV_IOACCEL_STATUS, buf, 64);
3080 #define IOACCEL_STATUS_BYTE 4
3081 #define OFFLOAD_CONFIGURED_BIT 0x01
3082 #define OFFLOAD_ENABLED_BIT 0x02
3083 ioaccel_status = buf[IOACCEL_STATUS_BYTE];
3084 this_device->offload_config =
3085 !!(ioaccel_status & OFFLOAD_CONFIGURED_BIT);
3086 if (this_device->offload_config) {
3087 this_device->offload_enabled =
3088 !!(ioaccel_status & OFFLOAD_ENABLED_BIT);
3089 if (hpsa_get_raid_map(h, scsi3addr, this_device))
3090 this_device->offload_enabled = 0;
3092 this_device->offload_to_be_enabled = this_device->offload_enabled;
3098 /* Get the device id from inquiry page 0x83 */
3099 static int hpsa_get_device_id(struct ctlr_info *h, unsigned char *scsi3addr,
3100 unsigned char *device_id, int buflen)
3107 buf = kzalloc(64, GFP_KERNEL);
3110 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | 0x83, buf, 64);
3112 memcpy(device_id, &buf[8], buflen);
3117 static int hpsa_scsi_do_report_luns(struct ctlr_info *h, int logical,
3118 void *buf, int bufsize,
3119 int extended_response)
3122 struct CommandList *c;
3123 unsigned char scsi3addr[8];
3124 struct ErrorInfo *ei;
3128 /* address the controller */
3129 memset(scsi3addr, 0, sizeof(scsi3addr));
3130 if (fill_cmd(c, logical ? HPSA_REPORT_LOG : HPSA_REPORT_PHYS, h,
3131 buf, bufsize, 0, scsi3addr, TYPE_CMD)) {
3135 if (extended_response)
3136 c->Request.CDB[1] = extended_response;
3137 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
3138 PCI_DMA_FROMDEVICE, NO_TIMEOUT);
3142 if (ei->CommandStatus != 0 &&
3143 ei->CommandStatus != CMD_DATA_UNDERRUN) {
3144 hpsa_scsi_interpret_error(h, c);
3147 struct ReportLUNdata *rld = buf;
3149 if (rld->extended_response_flag != extended_response) {
3150 dev_err(&h->pdev->dev,
3151 "report luns requested format %u, got %u\n",
3153 rld->extended_response_flag);
3162 static inline int hpsa_scsi_do_report_phys_luns(struct ctlr_info *h,
3163 struct ReportExtendedLUNdata *buf, int bufsize)
3165 return hpsa_scsi_do_report_luns(h, 0, buf, bufsize,
3166 HPSA_REPORT_PHYS_EXTENDED);
3169 static inline int hpsa_scsi_do_report_log_luns(struct ctlr_info *h,
3170 struct ReportLUNdata *buf, int bufsize)
3172 return hpsa_scsi_do_report_luns(h, 1, buf, bufsize, 0);
3175 static inline void hpsa_set_bus_target_lun(struct hpsa_scsi_dev_t *device,
3176 int bus, int target, int lun)
3179 device->target = target;
3183 /* Use VPD inquiry to get details of volume status */
3184 static int hpsa_get_volume_status(struct ctlr_info *h,
3185 unsigned char scsi3addr[])
3192 buf = kzalloc(64, GFP_KERNEL);
3194 return HPSA_VPD_LV_STATUS_UNSUPPORTED;
3196 /* Does controller have VPD for logical volume status? */
3197 if (!hpsa_vpd_page_supported(h, scsi3addr, HPSA_VPD_LV_STATUS))
3200 /* Get the size of the VPD return buffer */
3201 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
3202 buf, HPSA_VPD_HEADER_SZ);
3207 /* Now get the whole VPD buffer */
3208 rc = hpsa_scsi_do_inquiry(h, scsi3addr, VPD_PAGE | HPSA_VPD_LV_STATUS,
3209 buf, size + HPSA_VPD_HEADER_SZ);
3212 status = buf[4]; /* status byte */
3218 return HPSA_VPD_LV_STATUS_UNSUPPORTED;
3221 /* Determine offline status of a volume.
3224 * 0xff (offline for unknown reasons)
3225 * # (integer code indicating one of several NOT READY states
3226 * describing why a volume is to be kept offline)
3228 static int hpsa_volume_offline(struct ctlr_info *h,
3229 unsigned char scsi3addr[])
3231 struct CommandList *c;
3232 unsigned char *sense;
3233 u8 sense_key, asc, ascq;
3238 #define ASC_LUN_NOT_READY 0x04
3239 #define ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS 0x04
3240 #define ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ 0x02
3244 (void) fill_cmd(c, TEST_UNIT_READY, h, NULL, 0, 0, scsi3addr, TYPE_CMD);
3245 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT);
3250 sense = c->err_info->SenseInfo;
3251 if (c->err_info->SenseLen > sizeof(c->err_info->SenseInfo))
3252 sense_len = sizeof(c->err_info->SenseInfo);
3254 sense_len = c->err_info->SenseLen;
3255 decode_sense_data(sense, sense_len, &sense_key, &asc, &ascq);
3256 cmd_status = c->err_info->CommandStatus;
3257 scsi_status = c->err_info->ScsiStatus;
3259 /* Is the volume 'not ready'? */
3260 if (cmd_status != CMD_TARGET_STATUS ||
3261 scsi_status != SAM_STAT_CHECK_CONDITION ||
3262 sense_key != NOT_READY ||
3263 asc != ASC_LUN_NOT_READY) {
3267 /* Determine the reason for not ready state */
3268 ldstat = hpsa_get_volume_status(h, scsi3addr);
3270 /* Keep volume offline in certain cases: */
3272 case HPSA_LV_UNDERGOING_ERASE:
3273 case HPSA_LV_NOT_AVAILABLE:
3274 case HPSA_LV_UNDERGOING_RPI:
3275 case HPSA_LV_PENDING_RPI:
3276 case HPSA_LV_ENCRYPTED_NO_KEY:
3277 case HPSA_LV_PLAINTEXT_IN_ENCRYPT_ONLY_CONTROLLER:
3278 case HPSA_LV_UNDERGOING_ENCRYPTION:
3279 case HPSA_LV_UNDERGOING_ENCRYPTION_REKEYING:
3280 case HPSA_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
3282 case HPSA_VPD_LV_STATUS_UNSUPPORTED:
3283 /* If VPD status page isn't available,
3284 * use ASC/ASCQ to determine state
3286 if ((ascq == ASCQ_LUN_NOT_READY_FORMAT_IN_PROGRESS) ||
3287 (ascq == ASCQ_LUN_NOT_READY_INITIALIZING_CMD_REQ))
3297 * Find out if a logical device supports aborts by simply trying one.
3298 * Smart Array may claim not to support aborts on logical drives, but
3299 * if a MSA2000 * is connected, the drives on that will be presented
3300 * by the Smart Array as logical drives, and aborts may be sent to
3301 * those devices successfully. So the simplest way to find out is
3302 * to simply try an abort and see how the device responds.
3304 static int hpsa_device_supports_aborts(struct ctlr_info *h,
3305 unsigned char *scsi3addr)
3307 struct CommandList *c;
3308 struct ErrorInfo *ei;
3311 u64 tag = (u64) -1; /* bogus tag */
3313 /* Assume that physical devices support aborts */
3314 if (!is_logical_dev_addr_mode(scsi3addr))
3319 (void) fill_cmd(c, HPSA_ABORT_MSG, h, &tag, 0, 0, scsi3addr, TYPE_MSG);
3320 (void) hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT);
3321 /* no unmap needed here because no data xfer. */
3323 switch (ei->CommandStatus) {
3327 case CMD_UNABORTABLE:
3328 case CMD_ABORT_FAILED:
3331 case CMD_TMF_STATUS:
3332 rc = hpsa_evaluate_tmf_status(h, c);
3342 static int hpsa_update_device_info(struct ctlr_info *h,
3343 unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device,
3344 unsigned char *is_OBDR_device)
3347 #define OBDR_SIG_OFFSET 43
3348 #define OBDR_TAPE_SIG "$DR-10"
3349 #define OBDR_SIG_LEN (sizeof(OBDR_TAPE_SIG) - 1)
3350 #define OBDR_TAPE_INQ_SIZE (OBDR_SIG_OFFSET + OBDR_SIG_LEN)
3352 unsigned char *inq_buff;
3353 unsigned char *obdr_sig;
3355 inq_buff = kzalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL);
3359 /* Do an inquiry to the device to see what it is. */
3360 if (hpsa_scsi_do_inquiry(h, scsi3addr, 0, inq_buff,
3361 (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) {
3362 /* Inquiry failed (msg printed already) */
3363 dev_err(&h->pdev->dev,
3364 "hpsa_update_device_info: inquiry failed\n");
3368 this_device->devtype = (inq_buff[0] & 0x1f);
3369 memcpy(this_device->scsi3addr, scsi3addr, 8);
3370 memcpy(this_device->vendor, &inq_buff[8],
3371 sizeof(this_device->vendor));
3372 memcpy(this_device->model, &inq_buff[16],
3373 sizeof(this_device->model));
3374 memset(this_device->device_id, 0,
3375 sizeof(this_device->device_id));
3376 hpsa_get_device_id(h, scsi3addr, this_device->device_id,
3377 sizeof(this_device->device_id));
3379 if (this_device->devtype == TYPE_DISK &&
3380 is_logical_dev_addr_mode(scsi3addr)) {
3383 hpsa_get_raid_level(h, scsi3addr, &this_device->raid_level);
3384 if (h->fw_support & MISC_FW_RAID_OFFLOAD_BASIC)
3385 hpsa_get_ioaccel_status(h, scsi3addr, this_device);
3386 volume_offline = hpsa_volume_offline(h, scsi3addr);
3387 if (volume_offline < 0 || volume_offline > 0xff)
3388 volume_offline = HPSA_VPD_LV_STATUS_UNSUPPORTED;
3389 this_device->volume_offline = volume_offline & 0xff;
3391 this_device->raid_level = RAID_UNKNOWN;
3392 this_device->offload_config = 0;
3393 this_device->offload_enabled = 0;
3394 this_device->offload_to_be_enabled = 0;
3395 this_device->hba_ioaccel_enabled = 0;
3396 this_device->volume_offline = 0;
3397 this_device->queue_depth = h->nr_cmds;
3400 if (is_OBDR_device) {
3401 /* See if this is a One-Button-Disaster-Recovery device
3402 * by looking for "$DR-10" at offset 43 in inquiry data.
3404 obdr_sig = &inq_buff[OBDR_SIG_OFFSET];
3405 *is_OBDR_device = (this_device->devtype == TYPE_ROM &&
3406 strncmp(obdr_sig, OBDR_TAPE_SIG,
3407 OBDR_SIG_LEN) == 0);
3417 static void hpsa_update_device_supports_aborts(struct ctlr_info *h,
3418 struct hpsa_scsi_dev_t *dev, u8 *scsi3addr)
3420 unsigned long flags;
3423 * See if this device supports aborts. If we already know
3424 * the device, we already know if it supports aborts, otherwise
3425 * we have to find out if it supports aborts by trying one.
3427 spin_lock_irqsave(&h->devlock, flags);
3428 rc = hpsa_scsi_find_entry(dev, h->dev, h->ndevices, &entry);
3429 if ((rc == DEVICE_SAME || rc == DEVICE_UPDATED) &&
3430 entry >= 0 && entry < h->ndevices) {
3431 dev->supports_aborts = h->dev[entry]->supports_aborts;
3432 spin_unlock_irqrestore(&h->devlock, flags);
3434 spin_unlock_irqrestore(&h->devlock, flags);
3435 dev->supports_aborts =
3436 hpsa_device_supports_aborts(h, scsi3addr);
3437 if (dev->supports_aborts < 0)
3438 dev->supports_aborts = 0;
3442 static unsigned char *ext_target_model[] = {
3452 static int is_ext_target(struct ctlr_info *h, struct hpsa_scsi_dev_t *device)
3456 for (i = 0; ext_target_model[i]; i++)
3457 if (strncmp(device->model, ext_target_model[i],
3458 strlen(ext_target_model[i])) == 0)
3463 /* Helper function to assign bus, target, lun mapping of devices.
3464 * Puts non-external target logical volumes on bus 0, external target logical
3465 * volumes on bus 1, physical devices on bus 2. and the hba on bus 3.
3466 * Logical drive target and lun are assigned at this time, but
3467 * physical device lun and target assignment are deferred (assigned
3468 * in hpsa_find_target_lun, called by hpsa_scsi_add_entry.)
3470 static void figure_bus_target_lun(struct ctlr_info *h,
3471 u8 *lunaddrbytes, struct hpsa_scsi_dev_t *device)
3473 u32 lunid = le32_to_cpu(*((__le32 *) lunaddrbytes));
3475 if (!is_logical_dev_addr_mode(lunaddrbytes)) {
3476 /* physical device, target and lun filled in later */
3477 if (is_hba_lunid(lunaddrbytes))
3478 hpsa_set_bus_target_lun(device, 3, 0, lunid & 0x3fff);
3480 /* defer target, lun assignment for physical devices */
3481 hpsa_set_bus_target_lun(device, 2, -1, -1);
3484 /* It's a logical device */
3485 if (is_ext_target(h, device)) {
3486 /* external target way, put logicals on bus 1
3487 * and match target/lun numbers box
3488 * reports, other smart array, bus 0, target 0, match lunid
3490 hpsa_set_bus_target_lun(device,
3491 1, (lunid >> 16) & 0x3fff, lunid & 0x00ff);
3494 hpsa_set_bus_target_lun(device, 0, 0, lunid & 0x3fff);
3498 * If there is no lun 0 on a target, linux won't find any devices.
3499 * For the external targets (arrays), we have to manually detect the enclosure
3500 * which is at lun zero, as CCISS_REPORT_PHYSICAL_LUNS doesn't report
3501 * it for some reason. *tmpdevice is the target we're adding,
3502 * this_device is a pointer into the current element of currentsd[]
3503 * that we're building up in update_scsi_devices(), below.
3504 * lunzerobits is a bitmap that tracks which targets already have a
3506 * Returns 1 if an enclosure was added, 0 if not.
3508 static int add_ext_target_dev(struct ctlr_info *h,
3509 struct hpsa_scsi_dev_t *tmpdevice,
3510 struct hpsa_scsi_dev_t *this_device, u8 *lunaddrbytes,
3511 unsigned long lunzerobits[], int *n_ext_target_devs)
3513 unsigned char scsi3addr[8];
3515 if (test_bit(tmpdevice->target, lunzerobits))
3516 return 0; /* There is already a lun 0 on this target. */
3518 if (!is_logical_dev_addr_mode(lunaddrbytes))
3519 return 0; /* It's the logical targets that may lack lun 0. */
3521 if (!is_ext_target(h, tmpdevice))
3522 return 0; /* Only external target devices have this problem. */
3524 if (tmpdevice->lun == 0) /* if lun is 0, then we have a lun 0. */
3527 memset(scsi3addr, 0, 8);
3528 scsi3addr[3] = tmpdevice->target;
3529 if (is_hba_lunid(scsi3addr))
3530 return 0; /* Don't add the RAID controller here. */
3532 if (is_scsi_rev_5(h))
3533 return 0; /* p1210m doesn't need to do this. */
3535 if (*n_ext_target_devs >= MAX_EXT_TARGETS) {
3536 dev_warn(&h->pdev->dev, "Maximum number of external "
3537 "target devices exceeded. Check your hardware "
3542 if (hpsa_update_device_info(h, scsi3addr, this_device, NULL))
3544 (*n_ext_target_devs)++;
3545 hpsa_set_bus_target_lun(this_device,
3546 tmpdevice->bus, tmpdevice->target, 0);
3547 hpsa_update_device_supports_aborts(h, this_device, scsi3addr);
3548 set_bit(tmpdevice->target, lunzerobits);
3553 * Get address of physical disk used for an ioaccel2 mode command:
3554 * 1. Extract ioaccel2 handle from the command.
3555 * 2. Find a matching ioaccel2 handle from list of physical disks.
3557 * 1 and set scsi3addr to address of matching physical
3558 * 0 if no matching physical disk was found.
3560 static int hpsa_get_pdisk_of_ioaccel2(struct ctlr_info *h,
3561 struct CommandList *ioaccel2_cmd_to_abort, unsigned char *scsi3addr)
3563 struct io_accel2_cmd *c2 =
3564 &h->ioaccel2_cmd_pool[ioaccel2_cmd_to_abort->cmdindex];
3565 unsigned long flags;
3568 spin_lock_irqsave(&h->devlock, flags);
3569 for (i = 0; i < h->ndevices; i++)
3570 if (h->dev[i]->ioaccel_handle == le32_to_cpu(c2->scsi_nexus)) {
3571 memcpy(scsi3addr, h->dev[i]->scsi3addr,
3572 sizeof(h->dev[i]->scsi3addr));
3573 spin_unlock_irqrestore(&h->devlock, flags);
3576 spin_unlock_irqrestore(&h->devlock, flags);
3581 * Do CISS_REPORT_PHYS and CISS_REPORT_LOG. Data is returned in physdev,
3582 * logdev. The number of luns in physdev and logdev are returned in
3583 * *nphysicals and *nlogicals, respectively.
3584 * Returns 0 on success, -1 otherwise.
3586 static int hpsa_gather_lun_info(struct ctlr_info *h,
3587 struct ReportExtendedLUNdata *physdev, u32 *nphysicals,
3588 struct ReportLUNdata *logdev, u32 *nlogicals)
3590 if (hpsa_scsi_do_report_phys_luns(h, physdev, sizeof(*physdev))) {
3591 dev_err(&h->pdev->dev, "report physical LUNs failed.\n");
3594 *nphysicals = be32_to_cpu(*((__be32 *)physdev->LUNListLength)) / 24;
3595 if (*nphysicals > HPSA_MAX_PHYS_LUN) {
3596 dev_warn(&h->pdev->dev, "maximum physical LUNs (%d) exceeded. %d LUNs ignored.\n",
3597 HPSA_MAX_PHYS_LUN, *nphysicals - HPSA_MAX_PHYS_LUN);
3598 *nphysicals = HPSA_MAX_PHYS_LUN;
3600 if (hpsa_scsi_do_report_log_luns(h, logdev, sizeof(*logdev))) {
3601 dev_err(&h->pdev->dev, "report logical LUNs failed.\n");
3604 *nlogicals = be32_to_cpu(*((__be32 *) logdev->LUNListLength)) / 8;
3605 /* Reject Logicals in excess of our max capability. */
3606 if (*nlogicals > HPSA_MAX_LUN) {
3607 dev_warn(&h->pdev->dev,
3608 "maximum logical LUNs (%d) exceeded. "
3609 "%d LUNs ignored.\n", HPSA_MAX_LUN,
3610 *nlogicals - HPSA_MAX_LUN);
3611 *nlogicals = HPSA_MAX_LUN;
3613 if (*nlogicals + *nphysicals > HPSA_MAX_PHYS_LUN) {
3614 dev_warn(&h->pdev->dev,
3615 "maximum logical + physical LUNs (%d) exceeded. "
3616 "%d LUNs ignored.\n", HPSA_MAX_PHYS_LUN,
3617 *nphysicals + *nlogicals - HPSA_MAX_PHYS_LUN);
3618 *nlogicals = HPSA_MAX_PHYS_LUN - *nphysicals;
3623 static u8 *figure_lunaddrbytes(struct ctlr_info *h, int raid_ctlr_position,
3624 int i, int nphysicals, int nlogicals,
3625 struct ReportExtendedLUNdata *physdev_list,
3626 struct ReportLUNdata *logdev_list)
3628 /* Helper function, figure out where the LUN ID info is coming from
3629 * given index i, lists of physical and logical devices, where in
3630 * the list the raid controller is supposed to appear (first or last)
3633 int logicals_start = nphysicals + (raid_ctlr_position == 0);
3634 int last_device = nphysicals + nlogicals + (raid_ctlr_position == 0);
3636 if (i == raid_ctlr_position)
3637 return RAID_CTLR_LUNID;
3639 if (i < logicals_start)
3640 return &physdev_list->LUN[i -
3641 (raid_ctlr_position == 0)].lunid[0];
3643 if (i < last_device)
3644 return &logdev_list->LUN[i - nphysicals -
3645 (raid_ctlr_position == 0)][0];
3650 /* get physical drive ioaccel handle and queue depth */
3651 static void hpsa_get_ioaccel_drive_info(struct ctlr_info *h,
3652 struct hpsa_scsi_dev_t *dev,
3654 struct bmic_identify_physical_device *id_phys)
3657 struct ext_report_lun_entry *rle =
3658 (struct ext_report_lun_entry *) lunaddrbytes;
3660 dev->ioaccel_handle = rle->ioaccel_handle;
3661 if (PHYS_IOACCEL(lunaddrbytes) && dev->ioaccel_handle)
3662 dev->hba_ioaccel_enabled = 1;
3663 memset(id_phys, 0, sizeof(*id_phys));
3664 rc = hpsa_bmic_id_physical_device(h, lunaddrbytes,
3665 GET_BMIC_DRIVE_NUMBER(lunaddrbytes), id_phys,
3668 /* Reserve space for FW operations */
3669 #define DRIVE_CMDS_RESERVED_FOR_FW 2
3670 #define DRIVE_QUEUE_DEPTH 7
3672 le16_to_cpu(id_phys->current_queue_depth_limit) -
3673 DRIVE_CMDS_RESERVED_FOR_FW;
3675 dev->queue_depth = DRIVE_QUEUE_DEPTH; /* conservative */
3676 atomic_set(&dev->ioaccel_cmds_out, 0);
3677 atomic_set(&dev->reset_cmds_out, 0);
3680 static void hpsa_get_path_info(struct hpsa_scsi_dev_t *this_device,
3682 struct bmic_identify_physical_device *id_phys)
3684 if (PHYS_IOACCEL(lunaddrbytes)
3685 && this_device->ioaccel_handle)
3686 this_device->hba_ioaccel_enabled = 1;
3688 memcpy(&this_device->active_path_index,
3689 &id_phys->active_path_number,
3690 sizeof(this_device->active_path_index));
3691 memcpy(&this_device->path_map,
3692 &id_phys->redundant_path_present_map,
3693 sizeof(this_device->path_map));
3694 memcpy(&this_device->box,
3695 &id_phys->alternate_paths_phys_box_on_port,
3696 sizeof(this_device->box));
3697 memcpy(&this_device->phys_connector,
3698 &id_phys->alternate_paths_phys_connector,
3699 sizeof(this_device->phys_connector));
3700 memcpy(&this_device->bay,
3701 &id_phys->phys_bay_in_box,
3702 sizeof(this_device->bay));
3705 static void hpsa_update_scsi_devices(struct ctlr_info *h, int hostno)
3707 /* the idea here is we could get notified
3708 * that some devices have changed, so we do a report
3709 * physical luns and report logical luns cmd, and adjust
3710 * our list of devices accordingly.
3712 * The scsi3addr's of devices won't change so long as the
3713 * adapter is not reset. That means we can rescan and
3714 * tell which devices we already know about, vs. new
3715 * devices, vs. disappearing devices.
3717 struct ReportExtendedLUNdata *physdev_list = NULL;
3718 struct ReportLUNdata *logdev_list = NULL;
3719 struct bmic_identify_physical_device *id_phys = NULL;
3722 u32 ndev_allocated = 0;
3723 struct hpsa_scsi_dev_t **currentsd, *this_device, *tmpdevice;
3725 int i, n_ext_target_devs, ndevs_to_allocate;
3726 int raid_ctlr_position;
3727 DECLARE_BITMAP(lunzerobits, MAX_EXT_TARGETS);
3729 currentsd = kzalloc(sizeof(*currentsd) * HPSA_MAX_DEVICES, GFP_KERNEL);
3730 physdev_list = kzalloc(sizeof(*physdev_list), GFP_KERNEL);
3731 logdev_list = kzalloc(sizeof(*logdev_list), GFP_KERNEL);
3732 tmpdevice = kzalloc(sizeof(*tmpdevice), GFP_KERNEL);
3733 id_phys = kzalloc(sizeof(*id_phys), GFP_KERNEL);
3735 if (!currentsd || !physdev_list || !logdev_list ||
3736 !tmpdevice || !id_phys) {
3737 dev_err(&h->pdev->dev, "out of memory\n");
3740 memset(lunzerobits, 0, sizeof(lunzerobits));
3742 if (hpsa_gather_lun_info(h, physdev_list, &nphysicals,
3743 logdev_list, &nlogicals))
3746 /* We might see up to the maximum number of logical and physical disks
3747 * plus external target devices, and a device for the local RAID
3750 ndevs_to_allocate = nphysicals + nlogicals + MAX_EXT_TARGETS + 1;
3752 /* Allocate the per device structures */
3753 for (i = 0; i < ndevs_to_allocate; i++) {
3754 if (i >= HPSA_MAX_DEVICES) {
3755 dev_warn(&h->pdev->dev, "maximum devices (%d) exceeded."
3756 " %d devices ignored.\n", HPSA_MAX_DEVICES,
3757 ndevs_to_allocate - HPSA_MAX_DEVICES);
3761 currentsd[i] = kzalloc(sizeof(*currentsd[i]), GFP_KERNEL);
3762 if (!currentsd[i]) {
3763 dev_warn(&h->pdev->dev, "out of memory at %s:%d\n",
3764 __FILE__, __LINE__);
3770 if (is_scsi_rev_5(h))
3771 raid_ctlr_position = 0;
3773 raid_ctlr_position = nphysicals + nlogicals;
3775 /* adjust our table of devices */
3776 n_ext_target_devs = 0;
3777 for (i = 0; i < nphysicals + nlogicals + 1; i++) {
3778 u8 *lunaddrbytes, is_OBDR = 0;
3780 /* Figure out where the LUN ID info is coming from */
3781 lunaddrbytes = figure_lunaddrbytes(h, raid_ctlr_position,
3782 i, nphysicals, nlogicals, physdev_list, logdev_list);
3784 /* skip masked non-disk devices */
3785 if (MASKED_DEVICE(lunaddrbytes))
3786 if (i < nphysicals + (raid_ctlr_position == 0) &&
3787 NON_DISK_PHYS_DEV(lunaddrbytes))
3790 /* Get device type, vendor, model, device id */
3791 if (hpsa_update_device_info(h, lunaddrbytes, tmpdevice,
3793 continue; /* skip it if we can't talk to it. */
3794 figure_bus_target_lun(h, lunaddrbytes, tmpdevice);
3795 hpsa_update_device_supports_aborts(h, tmpdevice, lunaddrbytes);
3796 this_device = currentsd[ncurrent];
3799 * For external target devices, we have to insert a LUN 0 which
3800 * doesn't show up in CCISS_REPORT_PHYSICAL data, but there
3801 * is nonetheless an enclosure device there. We have to
3802 * present that otherwise linux won't find anything if
3803 * there is no lun 0.
3805 if (add_ext_target_dev(h, tmpdevice, this_device,
3806 lunaddrbytes, lunzerobits,
3807 &n_ext_target_devs)) {
3809 this_device = currentsd[ncurrent];
3812 *this_device = *tmpdevice;
3814 /* do not expose masked devices */
3815 if (MASKED_DEVICE(lunaddrbytes) &&
3816 i < nphysicals + (raid_ctlr_position == 0)) {
3817 this_device->expose_state = HPSA_DO_NOT_EXPOSE;
3819 this_device->expose_state =
3820 HPSA_SG_ATTACH | HPSA_ULD_ATTACH;
3823 switch (this_device->devtype) {
3825 /* We don't *really* support actual CD-ROM devices,
3826 * just "One Button Disaster Recovery" tape drive
3827 * which temporarily pretends to be a CD-ROM drive.
3828 * So we check that the device is really an OBDR tape
3829 * device by checking for "$DR-10" in bytes 43-48 of
3836 if (i < nphysicals + (raid_ctlr_position == 0)) {
3837 /* The disk is in HBA mode. */
3838 /* Never use RAID mapper in HBA mode. */
3839 this_device->offload_enabled = 0;
3840 hpsa_get_ioaccel_drive_info(h, this_device,
3841 lunaddrbytes, id_phys);
3842 hpsa_get_path_info(this_device, lunaddrbytes,
3848 case TYPE_MEDIUM_CHANGER:
3849 case TYPE_ENCLOSURE:
3853 /* Only present the Smartarray HBA as a RAID controller.
3854 * If it's a RAID controller other than the HBA itself
3855 * (an external RAID controller, MSA500 or similar)
3858 if (!is_hba_lunid(lunaddrbytes))
3865 if (ncurrent >= HPSA_MAX_DEVICES)
3868 adjust_hpsa_scsi_table(h, hostno, currentsd, ncurrent);
3871 for (i = 0; i < ndev_allocated; i++)
3872 kfree(currentsd[i]);
3874 kfree(physdev_list);
3879 static void hpsa_set_sg_descriptor(struct SGDescriptor *desc,
3880 struct scatterlist *sg)
3882 u64 addr64 = (u64) sg_dma_address(sg);
3883 unsigned int len = sg_dma_len(sg);
3885 desc->Addr = cpu_to_le64(addr64);
3886 desc->Len = cpu_to_le32(len);
3891 * hpsa_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci
3892 * dma mapping and fills in the scatter gather entries of the
3895 static int hpsa_scatter_gather(struct ctlr_info *h,
3896 struct CommandList *cp,
3897 struct scsi_cmnd *cmd)
3899 struct scatterlist *sg;
3900 int use_sg, i, sg_limit, chained, last_sg;
3901 struct SGDescriptor *curr_sg;
3903 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
3905 use_sg = scsi_dma_map(cmd);
3910 goto sglist_finished;
3913 * If the number of entries is greater than the max for a single list,
3914 * then we have a chained list; we will set up all but one entry in the
3915 * first list (the last entry is saved for link information);
3916 * otherwise, we don't have a chained list and we'll set up at each of
3917 * the entries in the one list.
3920 chained = use_sg > h->max_cmd_sg_entries;
3921 sg_limit = chained ? h->max_cmd_sg_entries - 1 : use_sg;
3922 last_sg = scsi_sg_count(cmd) - 1;
3923 scsi_for_each_sg(cmd, sg, sg_limit, i) {
3924 hpsa_set_sg_descriptor(curr_sg, sg);
3930 * Continue with the chained list. Set curr_sg to the chained
3931 * list. Modify the limit to the total count less the entries
3932 * we've already set up. Resume the scan at the list entry
3933 * where the previous loop left off.
3935 curr_sg = h->cmd_sg_list[cp->cmdindex];
3936 sg_limit = use_sg - sg_limit;
3937 for_each_sg(sg, sg, sg_limit, i) {
3938 hpsa_set_sg_descriptor(curr_sg, sg);
3943 /* Back the pointer up to the last entry and mark it as "last". */
3944 (curr_sg - 1)->Ext = cpu_to_le32(HPSA_SG_LAST);
3946 if (use_sg + chained > h->maxSG)
3947 h->maxSG = use_sg + chained;
3950 cp->Header.SGList = h->max_cmd_sg_entries;
3951 cp->Header.SGTotal = cpu_to_le16(use_sg + 1);
3952 if (hpsa_map_sg_chain_block(h, cp)) {
3953 scsi_dma_unmap(cmd);
3961 cp->Header.SGList = (u8) use_sg; /* no. SGs contig in this cmd */
3962 cp->Header.SGTotal = cpu_to_le16(use_sg); /* total sgs in cmd list */
3966 #define IO_ACCEL_INELIGIBLE (1)
3967 static int fixup_ioaccel_cdb(u8 *cdb, int *cdb_len)
3973 /* Perform some CDB fixups if needed using 10 byte reads/writes only */
3980 if (*cdb_len == 6) {
3981 block = (((u32) cdb[2]) << 8) | cdb[3];
3984 BUG_ON(*cdb_len != 12);
3985 block = (((u32) cdb[2]) << 24) |
3986 (((u32) cdb[3]) << 16) |
3987 (((u32) cdb[4]) << 8) |
3990 (((u32) cdb[6]) << 24) |
3991 (((u32) cdb[7]) << 16) |
3992 (((u32) cdb[8]) << 8) |
3995 if (block_cnt > 0xffff)
3996 return IO_ACCEL_INELIGIBLE;
3998 cdb[0] = is_write ? WRITE_10 : READ_10;
4000 cdb[2] = (u8) (block >> 24);
4001 cdb[3] = (u8) (block >> 16);
4002 cdb[4] = (u8) (block >> 8);
4003 cdb[5] = (u8) (block);
4005 cdb[7] = (u8) (block_cnt >> 8);
4006 cdb[8] = (u8) (block_cnt);
4014 static int hpsa_scsi_ioaccel1_queue_command(struct ctlr_info *h,
4015 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4016 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4018 struct scsi_cmnd *cmd = c->scsi_cmd;
4019 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[c->cmdindex];
4021 unsigned int total_len = 0;
4022 struct scatterlist *sg;
4025 struct SGDescriptor *curr_sg;
4026 u32 control = IOACCEL1_CONTROL_SIMPLEQUEUE;
4028 /* TODO: implement chaining support */
4029 if (scsi_sg_count(cmd) > h->ioaccel_maxsg) {
4030 atomic_dec(&phys_disk->ioaccel_cmds_out);
4031 return IO_ACCEL_INELIGIBLE;
4034 BUG_ON(cmd->cmd_len > IOACCEL1_IOFLAGS_CDBLEN_MAX);
4036 if (fixup_ioaccel_cdb(cdb, &cdb_len)) {
4037 atomic_dec(&phys_disk->ioaccel_cmds_out);
4038 return IO_ACCEL_INELIGIBLE;
4041 c->cmd_type = CMD_IOACCEL1;
4043 /* Adjust the DMA address to point to the accelerated command buffer */
4044 c->busaddr = (u32) h->ioaccel_cmd_pool_dhandle +
4045 (c->cmdindex * sizeof(*cp));
4046 BUG_ON(c->busaddr & 0x0000007F);
4048 use_sg = scsi_dma_map(cmd);
4050 atomic_dec(&phys_disk->ioaccel_cmds_out);
4056 scsi_for_each_sg(cmd, sg, use_sg, i) {
4057 addr64 = (u64) sg_dma_address(sg);
4058 len = sg_dma_len(sg);
4060 curr_sg->Addr = cpu_to_le64(addr64);
4061 curr_sg->Len = cpu_to_le32(len);
4062 curr_sg->Ext = cpu_to_le32(0);
4065 (--curr_sg)->Ext = cpu_to_le32(HPSA_SG_LAST);
4067 switch (cmd->sc_data_direction) {
4069 control |= IOACCEL1_CONTROL_DATA_OUT;
4071 case DMA_FROM_DEVICE:
4072 control |= IOACCEL1_CONTROL_DATA_IN;
4075 control |= IOACCEL1_CONTROL_NODATAXFER;
4078 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
4079 cmd->sc_data_direction);
4084 control |= IOACCEL1_CONTROL_NODATAXFER;
4087 c->Header.SGList = use_sg;
4088 /* Fill out the command structure to submit */
4089 cp->dev_handle = cpu_to_le16(ioaccel_handle & 0xFFFF);
4090 cp->transfer_len = cpu_to_le32(total_len);
4091 cp->io_flags = cpu_to_le16(IOACCEL1_IOFLAGS_IO_REQ |
4092 (cdb_len & IOACCEL1_IOFLAGS_CDBLEN_MASK));
4093 cp->control = cpu_to_le32(control);
4094 memcpy(cp->CDB, cdb, cdb_len);
4095 memcpy(cp->CISS_LUN, scsi3addr, 8);
4096 /* Tag was already set at init time. */
4097 enqueue_cmd_and_start_io(h, c);
4102 * Queue a command directly to a device behind the controller using the
4103 * I/O accelerator path.
4105 static int hpsa_scsi_ioaccel_direct_map(struct ctlr_info *h,
4106 struct CommandList *c)
4108 struct scsi_cmnd *cmd = c->scsi_cmd;
4109 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4113 return hpsa_scsi_ioaccel_queue_command(h, c, dev->ioaccel_handle,
4114 cmd->cmnd, cmd->cmd_len, dev->scsi3addr, dev);
4118 * Set encryption parameters for the ioaccel2 request
4120 static void set_encrypt_ioaccel2(struct ctlr_info *h,
4121 struct CommandList *c, struct io_accel2_cmd *cp)
4123 struct scsi_cmnd *cmd = c->scsi_cmd;
4124 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4125 struct raid_map_data *map = &dev->raid_map;
4128 /* Are we doing encryption on this device */
4129 if (!(le16_to_cpu(map->flags) & RAID_MAP_FLAG_ENCRYPT_ON))
4131 /* Set the data encryption key index. */
4132 cp->dekindex = map->dekindex;
4134 /* Set the encryption enable flag, encoded into direction field. */
4135 cp->direction |= IOACCEL2_DIRECTION_ENCRYPT_MASK;
4137 /* Set encryption tweak values based on logical block address
4138 * If block size is 512, tweak value is LBA.
4139 * For other block sizes, tweak is (LBA * block size)/ 512)
4141 switch (cmd->cmnd[0]) {
4142 /* Required? 6-byte cdbs eliminated by fixup_ioaccel_cdb */
4145 first_block = get_unaligned_be16(&cmd->cmnd[2]);
4149 /* Required? 12-byte cdbs eliminated by fixup_ioaccel_cdb */
4152 first_block = get_unaligned_be32(&cmd->cmnd[2]);
4156 first_block = get_unaligned_be64(&cmd->cmnd[2]);
4159 dev_err(&h->pdev->dev,
4160 "ERROR: %s: size (0x%x) not supported for encryption\n",
4161 __func__, cmd->cmnd[0]);
4166 if (le32_to_cpu(map->volume_blk_size) != 512)
4167 first_block = first_block *
4168 le32_to_cpu(map->volume_blk_size)/512;
4170 cp->tweak_lower = cpu_to_le32(first_block);
4171 cp->tweak_upper = cpu_to_le32(first_block >> 32);
4174 static int hpsa_scsi_ioaccel2_queue_command(struct ctlr_info *h,
4175 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4176 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4178 struct scsi_cmnd *cmd = c->scsi_cmd;
4179 struct io_accel2_cmd *cp = &h->ioaccel2_cmd_pool[c->cmdindex];
4180 struct ioaccel2_sg_element *curr_sg;
4182 struct scatterlist *sg;
4187 BUG_ON(scsi_sg_count(cmd) > h->maxsgentries);
4189 if (fixup_ioaccel_cdb(cdb, &cdb_len)) {
4190 atomic_dec(&phys_disk->ioaccel_cmds_out);
4191 return IO_ACCEL_INELIGIBLE;
4194 c->cmd_type = CMD_IOACCEL2;
4195 /* Adjust the DMA address to point to the accelerated command buffer */
4196 c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle +
4197 (c->cmdindex * sizeof(*cp));
4198 BUG_ON(c->busaddr & 0x0000007F);
4200 memset(cp, 0, sizeof(*cp));
4201 cp->IU_type = IOACCEL2_IU_TYPE;
4203 use_sg = scsi_dma_map(cmd);
4205 atomic_dec(&phys_disk->ioaccel_cmds_out);
4211 if (use_sg > h->ioaccel_maxsg) {
4212 addr64 = le64_to_cpu(
4213 h->ioaccel2_cmd_sg_list[c->cmdindex]->address);
4214 curr_sg->address = cpu_to_le64(addr64);
4215 curr_sg->length = 0;
4216 curr_sg->reserved[0] = 0;
4217 curr_sg->reserved[1] = 0;
4218 curr_sg->reserved[2] = 0;
4219 curr_sg->chain_indicator = 0x80;
4221 curr_sg = h->ioaccel2_cmd_sg_list[c->cmdindex];
4223 scsi_for_each_sg(cmd, sg, use_sg, i) {
4224 addr64 = (u64) sg_dma_address(sg);
4225 len = sg_dma_len(sg);
4227 curr_sg->address = cpu_to_le64(addr64);
4228 curr_sg->length = cpu_to_le32(len);
4229 curr_sg->reserved[0] = 0;
4230 curr_sg->reserved[1] = 0;
4231 curr_sg->reserved[2] = 0;
4232 curr_sg->chain_indicator = 0;
4236 switch (cmd->sc_data_direction) {
4238 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4239 cp->direction |= IOACCEL2_DIR_DATA_OUT;
4241 case DMA_FROM_DEVICE:
4242 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4243 cp->direction |= IOACCEL2_DIR_DATA_IN;
4246 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4247 cp->direction |= IOACCEL2_DIR_NO_DATA;
4250 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
4251 cmd->sc_data_direction);
4256 cp->direction &= ~IOACCEL2_DIRECTION_MASK;
4257 cp->direction |= IOACCEL2_DIR_NO_DATA;
4260 /* Set encryption parameters, if necessary */
4261 set_encrypt_ioaccel2(h, c, cp);
4263 cp->scsi_nexus = cpu_to_le32(ioaccel_handle);
4264 cp->Tag = cpu_to_le32(c->cmdindex << DIRECT_LOOKUP_SHIFT);
4265 memcpy(cp->cdb, cdb, sizeof(cp->cdb));
4267 cp->data_len = cpu_to_le32(total_len);
4268 cp->err_ptr = cpu_to_le64(c->busaddr +
4269 offsetof(struct io_accel2_cmd, error_data));
4270 cp->err_len = cpu_to_le32(sizeof(cp->error_data));
4272 /* fill in sg elements */
4273 if (use_sg > h->ioaccel_maxsg) {
4275 if (hpsa_map_ioaccel2_sg_chain_block(h, cp, c)) {
4276 atomic_dec(&phys_disk->ioaccel_cmds_out);
4277 scsi_dma_unmap(cmd);
4281 cp->sg_count = (u8) use_sg;
4283 enqueue_cmd_and_start_io(h, c);
4288 * Queue a command to the correct I/O accelerator path.
4290 static int hpsa_scsi_ioaccel_queue_command(struct ctlr_info *h,
4291 struct CommandList *c, u32 ioaccel_handle, u8 *cdb, int cdb_len,
4292 u8 *scsi3addr, struct hpsa_scsi_dev_t *phys_disk)
4294 /* Try to honor the device's queue depth */
4295 if (atomic_inc_return(&phys_disk->ioaccel_cmds_out) >
4296 phys_disk->queue_depth) {
4297 atomic_dec(&phys_disk->ioaccel_cmds_out);
4298 return IO_ACCEL_INELIGIBLE;
4300 if (h->transMethod & CFGTBL_Trans_io_accel1)
4301 return hpsa_scsi_ioaccel1_queue_command(h, c, ioaccel_handle,
4302 cdb, cdb_len, scsi3addr,
4305 return hpsa_scsi_ioaccel2_queue_command(h, c, ioaccel_handle,
4306 cdb, cdb_len, scsi3addr,
4310 static void raid_map_helper(struct raid_map_data *map,
4311 int offload_to_mirror, u32 *map_index, u32 *current_group)
4313 if (offload_to_mirror == 0) {
4314 /* use physical disk in the first mirrored group. */
4315 *map_index %= le16_to_cpu(map->data_disks_per_row);
4319 /* determine mirror group that *map_index indicates */
4320 *current_group = *map_index /
4321 le16_to_cpu(map->data_disks_per_row);
4322 if (offload_to_mirror == *current_group)
4324 if (*current_group < le16_to_cpu(map->layout_map_count) - 1) {
4325 /* select map index from next group */
4326 *map_index += le16_to_cpu(map->data_disks_per_row);
4329 /* select map index from first group */
4330 *map_index %= le16_to_cpu(map->data_disks_per_row);
4333 } while (offload_to_mirror != *current_group);
4337 * Attempt to perform offload RAID mapping for a logical volume I/O.
4339 static int hpsa_scsi_ioaccel_raid_map(struct ctlr_info *h,
4340 struct CommandList *c)
4342 struct scsi_cmnd *cmd = c->scsi_cmd;
4343 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4344 struct raid_map_data *map = &dev->raid_map;
4345 struct raid_map_disk_data *dd = &map->data[0];
4348 u64 first_block, last_block;
4351 u64 first_row, last_row;
4352 u32 first_row_offset, last_row_offset;
4353 u32 first_column, last_column;
4354 u64 r0_first_row, r0_last_row;
4355 u32 r5or6_blocks_per_row;
4356 u64 r5or6_first_row, r5or6_last_row;
4357 u32 r5or6_first_row_offset, r5or6_last_row_offset;
4358 u32 r5or6_first_column, r5or6_last_column;
4359 u32 total_disks_per_row;
4361 u32 first_group, last_group, current_group;
4369 #if BITS_PER_LONG == 32
4372 int offload_to_mirror;
4374 /* check for valid opcode, get LBA and block count */
4375 switch (cmd->cmnd[0]) {
4380 (((u64) cmd->cmnd[2]) << 8) |
4382 block_cnt = cmd->cmnd[4];
4390 (((u64) cmd->cmnd[2]) << 24) |
4391 (((u64) cmd->cmnd[3]) << 16) |
4392 (((u64) cmd->cmnd[4]) << 8) |
4395 (((u32) cmd->cmnd[7]) << 8) |
4402 (((u64) cmd->cmnd[2]) << 24) |
4403 (((u64) cmd->cmnd[3]) << 16) |
4404 (((u64) cmd->cmnd[4]) << 8) |
4407 (((u32) cmd->cmnd[6]) << 24) |
4408 (((u32) cmd->cmnd[7]) << 16) |
4409 (((u32) cmd->cmnd[8]) << 8) |
4416 (((u64) cmd->cmnd[2]) << 56) |
4417 (((u64) cmd->cmnd[3]) << 48) |
4418 (((u64) cmd->cmnd[4]) << 40) |
4419 (((u64) cmd->cmnd[5]) << 32) |
4420 (((u64) cmd->cmnd[6]) << 24) |
4421 (((u64) cmd->cmnd[7]) << 16) |
4422 (((u64) cmd->cmnd[8]) << 8) |
4425 (((u32) cmd->cmnd[10]) << 24) |
4426 (((u32) cmd->cmnd[11]) << 16) |
4427 (((u32) cmd->cmnd[12]) << 8) |
4431 return IO_ACCEL_INELIGIBLE; /* process via normal I/O path */
4433 last_block = first_block + block_cnt - 1;
4435 /* check for write to non-RAID-0 */
4436 if (is_write && dev->raid_level != 0)
4437 return IO_ACCEL_INELIGIBLE;
4439 /* check for invalid block or wraparound */
4440 if (last_block >= le64_to_cpu(map->volume_blk_cnt) ||
4441 last_block < first_block)
4442 return IO_ACCEL_INELIGIBLE;
4444 /* calculate stripe information for the request */
4445 blocks_per_row = le16_to_cpu(map->data_disks_per_row) *
4446 le16_to_cpu(map->strip_size);
4447 strip_size = le16_to_cpu(map->strip_size);
4448 #if BITS_PER_LONG == 32
4449 tmpdiv = first_block;
4450 (void) do_div(tmpdiv, blocks_per_row);
4452 tmpdiv = last_block;
4453 (void) do_div(tmpdiv, blocks_per_row);
4455 first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
4456 last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
4457 tmpdiv = first_row_offset;
4458 (void) do_div(tmpdiv, strip_size);
4459 first_column = tmpdiv;
4460 tmpdiv = last_row_offset;
4461 (void) do_div(tmpdiv, strip_size);
4462 last_column = tmpdiv;
4464 first_row = first_block / blocks_per_row;
4465 last_row = last_block / blocks_per_row;
4466 first_row_offset = (u32) (first_block - (first_row * blocks_per_row));
4467 last_row_offset = (u32) (last_block - (last_row * blocks_per_row));
4468 first_column = first_row_offset / strip_size;
4469 last_column = last_row_offset / strip_size;
4472 /* if this isn't a single row/column then give to the controller */
4473 if ((first_row != last_row) || (first_column != last_column))
4474 return IO_ACCEL_INELIGIBLE;
4476 /* proceeding with driver mapping */
4477 total_disks_per_row = le16_to_cpu(map->data_disks_per_row) +
4478 le16_to_cpu(map->metadata_disks_per_row);
4479 map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
4480 le16_to_cpu(map->row_cnt);
4481 map_index = (map_row * total_disks_per_row) + first_column;
4483 switch (dev->raid_level) {
4485 break; /* nothing special to do */
4487 /* Handles load balance across RAID 1 members.
4488 * (2-drive R1 and R10 with even # of drives.)
4489 * Appropriate for SSDs, not optimal for HDDs
4491 BUG_ON(le16_to_cpu(map->layout_map_count) != 2);
4492 if (dev->offload_to_mirror)
4493 map_index += le16_to_cpu(map->data_disks_per_row);
4494 dev->offload_to_mirror = !dev->offload_to_mirror;
4497 /* Handles N-way mirrors (R1-ADM)
4498 * and R10 with # of drives divisible by 3.)
4500 BUG_ON(le16_to_cpu(map->layout_map_count) != 3);
4502 offload_to_mirror = dev->offload_to_mirror;
4503 raid_map_helper(map, offload_to_mirror,
4504 &map_index, ¤t_group);
4505 /* set mirror group to use next time */
4507 (offload_to_mirror >=
4508 le16_to_cpu(map->layout_map_count) - 1)
4509 ? 0 : offload_to_mirror + 1;
4510 dev->offload_to_mirror = offload_to_mirror;
4511 /* Avoid direct use of dev->offload_to_mirror within this
4512 * function since multiple threads might simultaneously
4513 * increment it beyond the range of dev->layout_map_count -1.
4518 if (le16_to_cpu(map->layout_map_count) <= 1)
4521 /* Verify first and last block are in same RAID group */
4522 r5or6_blocks_per_row =
4523 le16_to_cpu(map->strip_size) *
4524 le16_to_cpu(map->data_disks_per_row);
4525 BUG_ON(r5or6_blocks_per_row == 0);
4526 stripesize = r5or6_blocks_per_row *
4527 le16_to_cpu(map->layout_map_count);
4528 #if BITS_PER_LONG == 32
4529 tmpdiv = first_block;
4530 first_group = do_div(tmpdiv, stripesize);
4531 tmpdiv = first_group;
4532 (void) do_div(tmpdiv, r5or6_blocks_per_row);
4533 first_group = tmpdiv;
4534 tmpdiv = last_block;
4535 last_group = do_div(tmpdiv, stripesize);
4536 tmpdiv = last_group;
4537 (void) do_div(tmpdiv, r5or6_blocks_per_row);
4538 last_group = tmpdiv;
4540 first_group = (first_block % stripesize) / r5or6_blocks_per_row;
4541 last_group = (last_block % stripesize) / r5or6_blocks_per_row;
4543 if (first_group != last_group)
4544 return IO_ACCEL_INELIGIBLE;
4546 /* Verify request is in a single row of RAID 5/6 */
4547 #if BITS_PER_LONG == 32
4548 tmpdiv = first_block;
4549 (void) do_div(tmpdiv, stripesize);
4550 first_row = r5or6_first_row = r0_first_row = tmpdiv;
4551 tmpdiv = last_block;
4552 (void) do_div(tmpdiv, stripesize);
4553 r5or6_last_row = r0_last_row = tmpdiv;
4555 first_row = r5or6_first_row = r0_first_row =
4556 first_block / stripesize;
4557 r5or6_last_row = r0_last_row = last_block / stripesize;
4559 if (r5or6_first_row != r5or6_last_row)
4560 return IO_ACCEL_INELIGIBLE;
4563 /* Verify request is in a single column */
4564 #if BITS_PER_LONG == 32
4565 tmpdiv = first_block;
4566 first_row_offset = do_div(tmpdiv, stripesize);
4567 tmpdiv = first_row_offset;
4568 first_row_offset = (u32) do_div(tmpdiv, r5or6_blocks_per_row);
4569 r5or6_first_row_offset = first_row_offset;
4570 tmpdiv = last_block;
4571 r5or6_last_row_offset = do_div(tmpdiv, stripesize);
4572 tmpdiv = r5or6_last_row_offset;
4573 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row);
4574 tmpdiv = r5or6_first_row_offset;
4575 (void) do_div(tmpdiv, map->strip_size);
4576 first_column = r5or6_first_column = tmpdiv;
4577 tmpdiv = r5or6_last_row_offset;
4578 (void) do_div(tmpdiv, map->strip_size);
4579 r5or6_last_column = tmpdiv;
4581 first_row_offset = r5or6_first_row_offset =
4582 (u32)((first_block % stripesize) %
4583 r5or6_blocks_per_row);
4585 r5or6_last_row_offset =
4586 (u32)((last_block % stripesize) %
4587 r5or6_blocks_per_row);
4589 first_column = r5or6_first_column =
4590 r5or6_first_row_offset / le16_to_cpu(map->strip_size);
4592 r5or6_last_row_offset / le16_to_cpu(map->strip_size);
4594 if (r5or6_first_column != r5or6_last_column)
4595 return IO_ACCEL_INELIGIBLE;
4597 /* Request is eligible */
4598 map_row = ((u32)(first_row >> map->parity_rotation_shift)) %
4599 le16_to_cpu(map->row_cnt);
4601 map_index = (first_group *
4602 (le16_to_cpu(map->row_cnt) * total_disks_per_row)) +
4603 (map_row * total_disks_per_row) + first_column;
4606 return IO_ACCEL_INELIGIBLE;
4609 if (unlikely(map_index >= RAID_MAP_MAX_ENTRIES))
4610 return IO_ACCEL_INELIGIBLE;
4612 c->phys_disk = dev->phys_disk[map_index];
4614 disk_handle = dd[map_index].ioaccel_handle;
4615 disk_block = le64_to_cpu(map->disk_starting_blk) +
4616 first_row * le16_to_cpu(map->strip_size) +
4617 (first_row_offset - first_column *
4618 le16_to_cpu(map->strip_size));
4619 disk_block_cnt = block_cnt;
4621 /* handle differing logical/physical block sizes */
4622 if (map->phys_blk_shift) {
4623 disk_block <<= map->phys_blk_shift;
4624 disk_block_cnt <<= map->phys_blk_shift;
4626 BUG_ON(disk_block_cnt > 0xffff);
4628 /* build the new CDB for the physical disk I/O */
4629 if (disk_block > 0xffffffff) {
4630 cdb[0] = is_write ? WRITE_16 : READ_16;
4632 cdb[2] = (u8) (disk_block >> 56);
4633 cdb[3] = (u8) (disk_block >> 48);
4634 cdb[4] = (u8) (disk_block >> 40);
4635 cdb[5] = (u8) (disk_block >> 32);
4636 cdb[6] = (u8) (disk_block >> 24);
4637 cdb[7] = (u8) (disk_block >> 16);
4638 cdb[8] = (u8) (disk_block >> 8);
4639 cdb[9] = (u8) (disk_block);
4640 cdb[10] = (u8) (disk_block_cnt >> 24);
4641 cdb[11] = (u8) (disk_block_cnt >> 16);
4642 cdb[12] = (u8) (disk_block_cnt >> 8);
4643 cdb[13] = (u8) (disk_block_cnt);
4648 cdb[0] = is_write ? WRITE_10 : READ_10;
4650 cdb[2] = (u8) (disk_block >> 24);
4651 cdb[3] = (u8) (disk_block >> 16);
4652 cdb[4] = (u8) (disk_block >> 8);
4653 cdb[5] = (u8) (disk_block);
4655 cdb[7] = (u8) (disk_block_cnt >> 8);
4656 cdb[8] = (u8) (disk_block_cnt);
4660 return hpsa_scsi_ioaccel_queue_command(h, c, disk_handle, cdb, cdb_len,
4662 dev->phys_disk[map_index]);
4666 * Submit commands down the "normal" RAID stack path
4667 * All callers to hpsa_ciss_submit must check lockup_detected
4668 * beforehand, before (opt.) and after calling cmd_alloc
4670 static int hpsa_ciss_submit(struct ctlr_info *h,
4671 struct CommandList *c, struct scsi_cmnd *cmd,
4672 unsigned char scsi3addr[])
4674 cmd->host_scribble = (unsigned char *) c;
4675 c->cmd_type = CMD_SCSI;
4677 c->Header.ReplyQueue = 0; /* unused in simple mode */
4678 memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8);
4679 c->Header.tag = cpu_to_le64((c->cmdindex << DIRECT_LOOKUP_SHIFT));
4681 /* Fill in the request block... */
4683 c->Request.Timeout = 0;
4684 BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB));
4685 c->Request.CDBLen = cmd->cmd_len;
4686 memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len);
4687 switch (cmd->sc_data_direction) {
4689 c->Request.type_attr_dir =
4690 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_WRITE);
4692 case DMA_FROM_DEVICE:
4693 c->Request.type_attr_dir =
4694 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_READ);
4697 c->Request.type_attr_dir =
4698 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_NONE);
4700 case DMA_BIDIRECTIONAL:
4701 /* This can happen if a buggy application does a scsi passthru
4702 * and sets both inlen and outlen to non-zero. ( see
4703 * ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() )
4706 c->Request.type_attr_dir =
4707 TYPE_ATTR_DIR(TYPE_CMD, ATTR_SIMPLE, XFER_RSVD);
4708 /* This is technically wrong, and hpsa controllers should
4709 * reject it with CMD_INVALID, which is the most correct
4710 * response, but non-fibre backends appear to let it
4711 * slide by, and give the same results as if this field
4712 * were set correctly. Either way is acceptable for
4713 * our purposes here.
4719 dev_err(&h->pdev->dev, "unknown data direction: %d\n",
4720 cmd->sc_data_direction);
4725 if (hpsa_scatter_gather(h, c, cmd) < 0) { /* Fill SG list */
4726 hpsa_cmd_resolve_and_free(h, c);
4727 return SCSI_MLQUEUE_HOST_BUSY;
4729 enqueue_cmd_and_start_io(h, c);
4730 /* the cmd'll come back via intr handler in complete_scsi_command() */
4734 static void hpsa_cmd_init(struct ctlr_info *h, int index,
4735 struct CommandList *c)
4737 dma_addr_t cmd_dma_handle, err_dma_handle;
4739 /* Zero out all of commandlist except the last field, refcount */
4740 memset(c, 0, offsetof(struct CommandList, refcount));
4741 c->Header.tag = cpu_to_le64((u64) (index << DIRECT_LOOKUP_SHIFT));
4742 cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c);
4743 c->err_info = h->errinfo_pool + index;
4744 memset(c->err_info, 0, sizeof(*c->err_info));
4745 err_dma_handle = h->errinfo_pool_dhandle
4746 + index * sizeof(*c->err_info);
4747 c->cmdindex = index;
4748 c->busaddr = (u32) cmd_dma_handle;
4749 c->ErrDesc.Addr = cpu_to_le64((u64) err_dma_handle);
4750 c->ErrDesc.Len = cpu_to_le32((u32) sizeof(*c->err_info));
4752 c->scsi_cmd = SCSI_CMD_IDLE;
4755 static void hpsa_preinitialize_commands(struct ctlr_info *h)
4759 for (i = 0; i < h->nr_cmds; i++) {
4760 struct CommandList *c = h->cmd_pool + i;
4762 hpsa_cmd_init(h, i, c);
4763 atomic_set(&c->refcount, 0);
4767 static inline void hpsa_cmd_partial_init(struct ctlr_info *h, int index,
4768 struct CommandList *c)
4770 dma_addr_t cmd_dma_handle = h->cmd_pool_dhandle + index * sizeof(*c);
4772 BUG_ON(c->cmdindex != index);
4774 memset(c->Request.CDB, 0, sizeof(c->Request.CDB));
4775 memset(c->err_info, 0, sizeof(*c->err_info));
4776 c->busaddr = (u32) cmd_dma_handle;
4779 static int hpsa_ioaccel_submit(struct ctlr_info *h,
4780 struct CommandList *c, struct scsi_cmnd *cmd,
4781 unsigned char *scsi3addr)
4783 struct hpsa_scsi_dev_t *dev = cmd->device->hostdata;
4784 int rc = IO_ACCEL_INELIGIBLE;
4786 cmd->host_scribble = (unsigned char *) c;
4788 if (dev->offload_enabled) {
4789 hpsa_cmd_init(h, c->cmdindex, c);
4790 c->cmd_type = CMD_SCSI;
4792 rc = hpsa_scsi_ioaccel_raid_map(h, c);
4793 if (rc < 0) /* scsi_dma_map failed. */
4794 rc = SCSI_MLQUEUE_HOST_BUSY;
4795 } else if (dev->hba_ioaccel_enabled) {
4796 hpsa_cmd_init(h, c->cmdindex, c);
4797 c->cmd_type = CMD_SCSI;
4799 rc = hpsa_scsi_ioaccel_direct_map(h, c);
4800 if (rc < 0) /* scsi_dma_map failed. */
4801 rc = SCSI_MLQUEUE_HOST_BUSY;
4806 static void hpsa_command_resubmit_worker(struct work_struct *work)
4808 struct scsi_cmnd *cmd;
4809 struct hpsa_scsi_dev_t *dev;
4810 struct CommandList *c = container_of(work, struct CommandList, work);
4813 dev = cmd->device->hostdata;
4815 cmd->result = DID_NO_CONNECT << 16;
4816 return hpsa_cmd_free_and_done(c->h, c, cmd);
4818 if (c->reset_pending)
4819 return hpsa_cmd_resolve_and_free(c->h, c);
4820 if (c->abort_pending)
4821 return hpsa_cmd_abort_and_free(c->h, c, cmd);
4822 if (c->cmd_type == CMD_IOACCEL2) {
4823 struct ctlr_info *h = c->h;
4824 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
4827 if (c2->error_data.serv_response ==
4828 IOACCEL2_STATUS_SR_TASK_COMP_SET_FULL) {
4829 rc = hpsa_ioaccel_submit(h, c, cmd, dev->scsi3addr);
4832 if (rc == SCSI_MLQUEUE_HOST_BUSY) {
4834 * If we get here, it means dma mapping failed.
4835 * Try again via scsi mid layer, which will
4836 * then get SCSI_MLQUEUE_HOST_BUSY.
4838 cmd->result = DID_IMM_RETRY << 16;
4839 return hpsa_cmd_free_and_done(h, c, cmd);
4841 /* else, fall thru and resubmit down CISS path */
4844 hpsa_cmd_partial_init(c->h, c->cmdindex, c);
4845 if (hpsa_ciss_submit(c->h, c, cmd, dev->scsi3addr)) {
4847 * If we get here, it means dma mapping failed. Try
4848 * again via scsi mid layer, which will then get
4849 * SCSI_MLQUEUE_HOST_BUSY.
4851 * hpsa_ciss_submit will have already freed c
4852 * if it encountered a dma mapping failure.
4854 cmd->result = DID_IMM_RETRY << 16;
4855 cmd->scsi_done(cmd);
4859 /* Running in struct Scsi_Host->host_lock less mode */
4860 static int hpsa_scsi_queue_command(struct Scsi_Host *sh, struct scsi_cmnd *cmd)
4862 struct ctlr_info *h;
4863 struct hpsa_scsi_dev_t *dev;
4864 unsigned char scsi3addr[8];
4865 struct CommandList *c;
4868 /* Get the ptr to our adapter structure out of cmd->host. */
4869 h = sdev_to_hba(cmd->device);
4871 BUG_ON(cmd->request->tag < 0);
4873 dev = cmd->device->hostdata;
4875 cmd->result = DID_NO_CONNECT << 16;
4876 cmd->scsi_done(cmd);
4880 memcpy(scsi3addr, dev->scsi3addr, sizeof(scsi3addr));
4882 if (unlikely(lockup_detected(h))) {
4883 cmd->result = DID_NO_CONNECT << 16;
4884 cmd->scsi_done(cmd);
4887 c = cmd_tagged_alloc(h, cmd);
4890 * Call alternate submit routine for I/O accelerated commands.
4891 * Retries always go down the normal I/O path.
4893 if (likely(cmd->retries == 0 &&
4894 cmd->request->cmd_type == REQ_TYPE_FS &&
4895 h->acciopath_status)) {
4896 rc = hpsa_ioaccel_submit(h, c, cmd, scsi3addr);
4899 if (rc == SCSI_MLQUEUE_HOST_BUSY) {
4900 hpsa_cmd_resolve_and_free(h, c);
4901 return SCSI_MLQUEUE_HOST_BUSY;
4904 return hpsa_ciss_submit(h, c, cmd, scsi3addr);
4907 static void hpsa_scan_complete(struct ctlr_info *h)
4909 unsigned long flags;
4911 spin_lock_irqsave(&h->scan_lock, flags);
4912 h->scan_finished = 1;
4913 wake_up_all(&h->scan_wait_queue);
4914 spin_unlock_irqrestore(&h->scan_lock, flags);
4917 static void hpsa_scan_start(struct Scsi_Host *sh)
4919 struct ctlr_info *h = shost_to_hba(sh);
4920 unsigned long flags;
4923 * Don't let rescans be initiated on a controller known to be locked
4924 * up. If the controller locks up *during* a rescan, that thread is
4925 * probably hosed, but at least we can prevent new rescan threads from
4926 * piling up on a locked up controller.
4928 if (unlikely(lockup_detected(h)))
4929 return hpsa_scan_complete(h);
4931 /* wait until any scan already in progress is finished. */
4933 spin_lock_irqsave(&h->scan_lock, flags);
4934 if (h->scan_finished)
4936 spin_unlock_irqrestore(&h->scan_lock, flags);
4937 wait_event(h->scan_wait_queue, h->scan_finished);
4938 /* Note: We don't need to worry about a race between this
4939 * thread and driver unload because the midlayer will
4940 * have incremented the reference count, so unload won't
4941 * happen if we're in here.
4944 h->scan_finished = 0; /* mark scan as in progress */
4945 spin_unlock_irqrestore(&h->scan_lock, flags);
4947 if (unlikely(lockup_detected(h)))
4948 return hpsa_scan_complete(h);
4950 hpsa_update_scsi_devices(h, h->scsi_host->host_no);
4952 hpsa_scan_complete(h);
4955 static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth)
4957 struct hpsa_scsi_dev_t *logical_drive = sdev->hostdata;
4964 else if (qdepth > logical_drive->queue_depth)
4965 qdepth = logical_drive->queue_depth;
4967 return scsi_change_queue_depth(sdev, qdepth);
4970 static int hpsa_scan_finished(struct Scsi_Host *sh,
4971 unsigned long elapsed_time)
4973 struct ctlr_info *h = shost_to_hba(sh);
4974 unsigned long flags;
4977 spin_lock_irqsave(&h->scan_lock, flags);
4978 finished = h->scan_finished;
4979 spin_unlock_irqrestore(&h->scan_lock, flags);
4983 static int hpsa_scsi_host_alloc(struct ctlr_info *h)
4985 struct Scsi_Host *sh;
4987 sh = scsi_host_alloc(&hpsa_driver_template, sizeof(h));
4989 dev_err(&h->pdev->dev, "scsi_host_alloc failed\n");
4996 sh->max_channel = 3;
4997 sh->max_cmd_len = MAX_COMMAND_SIZE;
4998 sh->max_lun = HPSA_MAX_LUN;
4999 sh->max_id = HPSA_MAX_LUN;
5000 sh->can_queue = h->nr_cmds - HPSA_NRESERVED_CMDS;
5001 sh->cmd_per_lun = sh->can_queue;
5002 sh->sg_tablesize = h->maxsgentries;
5003 sh->hostdata[0] = (unsigned long) h;
5004 sh->irq = h->intr[h->intr_mode];
5005 sh->unique_id = sh->irq;
5011 static int hpsa_scsi_add_host(struct ctlr_info *h)
5015 rv = scsi_add_host(h->scsi_host, &h->pdev->dev);
5017 dev_err(&h->pdev->dev, "scsi_add_host failed\n");
5020 scsi_scan_host(h->scsi_host);
5025 * The block layer has already gone to the trouble of picking out a unique,
5026 * small-integer tag for this request. We use an offset from that value as
5027 * an index to select our command block. (The offset allows us to reserve the
5028 * low-numbered entries for our own uses.)
5030 static int hpsa_get_cmd_index(struct scsi_cmnd *scmd)
5032 int idx = scmd->request->tag;
5037 /* Offset to leave space for internal cmds. */
5038 return idx += HPSA_NRESERVED_CMDS;
5042 * Send a TEST_UNIT_READY command to the specified LUN using the specified
5043 * reply queue; returns zero if the unit is ready, and non-zero otherwise.
5045 static int hpsa_send_test_unit_ready(struct ctlr_info *h,
5046 struct CommandList *c, unsigned char lunaddr[],
5051 /* Send the Test Unit Ready, fill_cmd can't fail, no mapping */
5052 (void) fill_cmd(c, TEST_UNIT_READY, h,
5053 NULL, 0, 0, lunaddr, TYPE_CMD);
5054 rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
5057 /* no unmap needed here because no data xfer. */
5059 /* Check if the unit is already ready. */
5060 if (c->err_info->CommandStatus == CMD_SUCCESS)
5064 * The first command sent after reset will receive "unit attention" to
5065 * indicate that the LUN has been reset...this is actually what we're
5066 * looking for (but, success is good too).
5068 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
5069 c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION &&
5070 (c->err_info->SenseInfo[2] == NO_SENSE ||
5071 c->err_info->SenseInfo[2] == UNIT_ATTENTION))
5078 * Wait for a TEST_UNIT_READY command to complete, retrying as necessary;
5079 * returns zero when the unit is ready, and non-zero when giving up.
5081 static int hpsa_wait_for_test_unit_ready(struct ctlr_info *h,
5082 struct CommandList *c,
5083 unsigned char lunaddr[], int reply_queue)
5087 int waittime = 1; /* seconds */
5089 /* Send test unit ready until device ready, or give up. */
5090 for (count = 0; count < HPSA_TUR_RETRY_LIMIT; count++) {
5093 * Wait for a bit. do this first, because if we send
5094 * the TUR right away, the reset will just abort it.
5096 msleep(1000 * waittime);
5098 rc = hpsa_send_test_unit_ready(h, c, lunaddr, reply_queue);
5102 /* Increase wait time with each try, up to a point. */
5103 if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS)
5106 dev_warn(&h->pdev->dev,
5107 "waiting %d secs for device to become ready.\n",
5114 static int wait_for_device_to_become_ready(struct ctlr_info *h,
5115 unsigned char lunaddr[],
5122 struct CommandList *c;
5127 * If no specific reply queue was requested, then send the TUR
5128 * repeatedly, requesting a reply on each reply queue; otherwise execute
5129 * the loop exactly once using only the specified queue.
5131 if (reply_queue == DEFAULT_REPLY_QUEUE) {
5133 last_queue = h->nreply_queues - 1;
5135 first_queue = reply_queue;
5136 last_queue = reply_queue;
5139 for (rq = first_queue; rq <= last_queue; rq++) {
5140 rc = hpsa_wait_for_test_unit_ready(h, c, lunaddr, rq);
5146 dev_warn(&h->pdev->dev, "giving up on device.\n");
5148 dev_warn(&h->pdev->dev, "device is ready.\n");
5154 /* Need at least one of these error handlers to keep ../scsi/hosts.c from
5155 * complaining. Doing a host- or bus-reset can't do anything good here.
5157 static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
5160 struct ctlr_info *h;
5161 struct hpsa_scsi_dev_t *dev;
5164 /* find the controller to which the command to be aborted was sent */
5165 h = sdev_to_hba(scsicmd->device);
5166 if (h == NULL) /* paranoia */
5169 if (lockup_detected(h))
5172 dev = scsicmd->device->hostdata;
5174 dev_err(&h->pdev->dev, "%s: device lookup failed\n", __func__);
5178 /* if controller locked up, we can guarantee command won't complete */
5179 if (lockup_detected(h)) {
5180 snprintf(msg, sizeof(msg),
5181 "cmd %d RESET FAILED, lockup detected",
5182 hpsa_get_cmd_index(scsicmd));
5183 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5187 /* this reset request might be the result of a lockup; check */
5188 if (detect_controller_lockup(h)) {
5189 snprintf(msg, sizeof(msg),
5190 "cmd %d RESET FAILED, new lockup detected",
5191 hpsa_get_cmd_index(scsicmd));
5192 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5196 /* Do not attempt on controller */
5197 if (is_hba_lunid(dev->scsi3addr))
5200 hpsa_show_dev_msg(KERN_WARNING, h, dev, "resetting");
5202 /* send a reset to the SCSI LUN which the command was sent to */
5203 rc = hpsa_do_reset(h, dev, dev->scsi3addr, HPSA_RESET_TYPE_LUN,
5204 DEFAULT_REPLY_QUEUE);
5205 snprintf(msg, sizeof(msg), "reset %s",
5206 rc == 0 ? "completed successfully" : "failed");
5207 hpsa_show_dev_msg(KERN_WARNING, h, dev, msg);
5208 return rc == 0 ? SUCCESS : FAILED;
5211 static void swizzle_abort_tag(u8 *tag)
5215 memcpy(original_tag, tag, 8);
5216 tag[0] = original_tag[3];
5217 tag[1] = original_tag[2];
5218 tag[2] = original_tag[1];
5219 tag[3] = original_tag[0];
5220 tag[4] = original_tag[7];
5221 tag[5] = original_tag[6];
5222 tag[6] = original_tag[5];
5223 tag[7] = original_tag[4];
5226 static void hpsa_get_tag(struct ctlr_info *h,
5227 struct CommandList *c, __le32 *taglower, __le32 *tagupper)
5230 if (c->cmd_type == CMD_IOACCEL1) {
5231 struct io_accel1_cmd *cm1 = (struct io_accel1_cmd *)
5232 &h->ioaccel_cmd_pool[c->cmdindex];
5233 tag = le64_to_cpu(cm1->tag);
5234 *tagupper = cpu_to_le32(tag >> 32);
5235 *taglower = cpu_to_le32(tag);
5238 if (c->cmd_type == CMD_IOACCEL2) {
5239 struct io_accel2_cmd *cm2 = (struct io_accel2_cmd *)
5240 &h->ioaccel2_cmd_pool[c->cmdindex];
5241 /* upper tag not used in ioaccel2 mode */
5242 memset(tagupper, 0, sizeof(*tagupper));
5243 *taglower = cm2->Tag;
5246 tag = le64_to_cpu(c->Header.tag);
5247 *tagupper = cpu_to_le32(tag >> 32);
5248 *taglower = cpu_to_le32(tag);
5251 static int hpsa_send_abort(struct ctlr_info *h, unsigned char *scsi3addr,
5252 struct CommandList *abort, int reply_queue)
5255 struct CommandList *c;
5256 struct ErrorInfo *ei;
5257 __le32 tagupper, taglower;
5261 /* fill_cmd can't fail here, no buffer to map */
5262 (void) fill_cmd(c, HPSA_ABORT_MSG, h, &abort->Header.tag,
5263 0, 0, scsi3addr, TYPE_MSG);
5264 if (h->needs_abort_tags_swizzled)
5265 swizzle_abort_tag(&c->Request.CDB[4]);
5266 (void) hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
5267 hpsa_get_tag(h, abort, &taglower, &tagupper);
5268 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: do_simple_cmd(abort) completed.\n",
5269 __func__, tagupper, taglower);
5270 /* no unmap needed here because no data xfer. */
5273 switch (ei->CommandStatus) {
5276 case CMD_TMF_STATUS:
5277 rc = hpsa_evaluate_tmf_status(h, c);
5279 case CMD_UNABORTABLE: /* Very common, don't make noise. */
5283 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: interpreting error.\n",
5284 __func__, tagupper, taglower);
5285 hpsa_scsi_interpret_error(h, c);
5290 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n",
5291 __func__, tagupper, taglower);
5295 static void setup_ioaccel2_abort_cmd(struct CommandList *c, struct ctlr_info *h,
5296 struct CommandList *command_to_abort, int reply_queue)
5298 struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
5299 struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2;
5300 struct io_accel2_cmd *c2a =
5301 &h->ioaccel2_cmd_pool[command_to_abort->cmdindex];
5302 struct scsi_cmnd *scmd = command_to_abort->scsi_cmd;
5303 struct hpsa_scsi_dev_t *dev = scmd->device->hostdata;
5306 * We're overlaying struct hpsa_tmf_struct on top of something which
5307 * was allocated as a struct io_accel2_cmd, so we better be sure it
5308 * actually fits, and doesn't overrun the error info space.
5310 BUILD_BUG_ON(sizeof(struct hpsa_tmf_struct) >
5311 sizeof(struct io_accel2_cmd));
5312 BUG_ON(offsetof(struct io_accel2_cmd, error_data) <
5313 offsetof(struct hpsa_tmf_struct, error_len) +
5314 sizeof(ac->error_len));
5316 c->cmd_type = IOACCEL2_TMF;
5317 c->scsi_cmd = SCSI_CMD_BUSY;
5319 /* Adjust the DMA address to point to the accelerated command buffer */
5320 c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle +
5321 (c->cmdindex * sizeof(struct io_accel2_cmd));
5322 BUG_ON(c->busaddr & 0x0000007F);
5324 memset(ac, 0, sizeof(*c2)); /* yes this is correct */
5325 ac->iu_type = IOACCEL2_IU_TMF_TYPE;
5326 ac->reply_queue = reply_queue;
5327 ac->tmf = IOACCEL2_TMF_ABORT;
5328 ac->it_nexus = cpu_to_le32(dev->ioaccel_handle);
5329 memset(ac->lun_id, 0, sizeof(ac->lun_id));
5330 ac->tag = cpu_to_le64(c->cmdindex << DIRECT_LOOKUP_SHIFT);
5331 ac->abort_tag = cpu_to_le64(le32_to_cpu(c2a->Tag));
5332 ac->error_ptr = cpu_to_le64(c->busaddr +
5333 offsetof(struct io_accel2_cmd, error_data));
5334 ac->error_len = cpu_to_le32(sizeof(c2->error_data));
5337 /* ioaccel2 path firmware cannot handle abort task requests.
5338 * Change abort requests to physical target reset, and send to the
5339 * address of the physical disk used for the ioaccel 2 command.
5340 * Return 0 on success (IO_OK)
5344 static int hpsa_send_reset_as_abort_ioaccel2(struct ctlr_info *h,
5345 unsigned char *scsi3addr, struct CommandList *abort, int reply_queue)
5348 struct scsi_cmnd *scmd; /* scsi command within request being aborted */
5349 struct hpsa_scsi_dev_t *dev; /* device to which scsi cmd was sent */
5350 unsigned char phys_scsi3addr[8]; /* addr of phys disk with volume */
5351 unsigned char *psa = &phys_scsi3addr[0];
5353 /* Get a pointer to the hpsa logical device. */
5354 scmd = abort->scsi_cmd;
5355 dev = (struct hpsa_scsi_dev_t *)(scmd->device->hostdata);
5357 dev_warn(&h->pdev->dev,
5358 "Cannot abort: no device pointer for command.\n");
5359 return -1; /* not abortable */
5362 if (h->raid_offload_debug > 0)
5363 dev_info(&h->pdev->dev,
5364 "scsi %d:%d:%d:%d %s scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5365 h->scsi_host->host_no, dev->bus, dev->target, dev->lun,
5367 scsi3addr[0], scsi3addr[1], scsi3addr[2], scsi3addr[3],
5368 scsi3addr[4], scsi3addr[5], scsi3addr[6], scsi3addr[7]);
5370 if (!dev->offload_enabled) {
5371 dev_warn(&h->pdev->dev,
5372 "Can't abort: device is not operating in HP SSD Smart Path mode.\n");
5373 return -1; /* not abortable */
5376 /* Incoming scsi3addr is logical addr. We need physical disk addr. */
5377 if (!hpsa_get_pdisk_of_ioaccel2(h, abort, psa)) {
5378 dev_warn(&h->pdev->dev, "Can't abort: Failed lookup of physical address.\n");
5379 return -1; /* not abortable */
5382 /* send the reset */
5383 if (h->raid_offload_debug > 0)
5384 dev_info(&h->pdev->dev,
5385 "Reset as abort: Resetting physical device at scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5386 psa[0], psa[1], psa[2], psa[3],
5387 psa[4], psa[5], psa[6], psa[7]);
5388 rc = hpsa_do_reset(h, dev, psa, HPSA_RESET_TYPE_TARGET, reply_queue);
5390 dev_warn(&h->pdev->dev,
5391 "Reset as abort: Failed on physical device at scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5392 psa[0], psa[1], psa[2], psa[3],
5393 psa[4], psa[5], psa[6], psa[7]);
5394 return rc; /* failed to reset */
5397 /* wait for device to recover */
5398 if (wait_for_device_to_become_ready(h, psa, reply_queue) != 0) {
5399 dev_warn(&h->pdev->dev,
5400 "Reset as abort: Failed: Device never recovered from reset: 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5401 psa[0], psa[1], psa[2], psa[3],
5402 psa[4], psa[5], psa[6], psa[7]);
5403 return -1; /* failed to recover */
5406 /* device recovered */
5407 dev_info(&h->pdev->dev,
5408 "Reset as abort: Device recovered from reset: scsi3addr 0x%02x%02x%02x%02x%02x%02x%02x%02x\n",
5409 psa[0], psa[1], psa[2], psa[3],
5410 psa[4], psa[5], psa[6], psa[7]);
5412 return rc; /* success */
5415 static int hpsa_send_abort_ioaccel2(struct ctlr_info *h,
5416 struct CommandList *abort, int reply_queue)
5419 struct CommandList *c;
5420 __le32 taglower, tagupper;
5421 struct hpsa_scsi_dev_t *dev;
5422 struct io_accel2_cmd *c2;
5424 dev = abort->scsi_cmd->device->hostdata;
5425 if (!dev->offload_enabled && !dev->hba_ioaccel_enabled)
5429 setup_ioaccel2_abort_cmd(c, h, abort, reply_queue);
5430 c2 = &h->ioaccel2_cmd_pool[c->cmdindex];
5431 (void) hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT);
5432 hpsa_get_tag(h, abort, &taglower, &tagupper);
5433 dev_dbg(&h->pdev->dev,
5434 "%s: Tag:0x%08x:%08x: do_simple_cmd(ioaccel2 abort) completed.\n",
5435 __func__, tagupper, taglower);
5436 /* no unmap needed here because no data xfer. */
5438 dev_dbg(&h->pdev->dev,
5439 "%s: Tag:0x%08x:%08x: abort service response = 0x%02x.\n",
5440 __func__, tagupper, taglower, c2->error_data.serv_response);
5441 switch (c2->error_data.serv_response) {
5442 case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE:
5443 case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS:
5446 case IOACCEL2_SERV_RESPONSE_TMF_REJECTED:
5447 case IOACCEL2_SERV_RESPONSE_FAILURE:
5448 case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN:
5452 dev_warn(&h->pdev->dev,
5453 "%s: Tag:0x%08x:%08x: unknown abort service response 0x%02x\n",
5454 __func__, tagupper, taglower,
5455 c2->error_data.serv_response);
5459 dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n", __func__,
5460 tagupper, taglower);
5464 static int hpsa_send_abort_both_ways(struct ctlr_info *h,
5465 unsigned char *scsi3addr, struct CommandList *abort, int reply_queue)
5468 * ioccelerator mode 2 commands should be aborted via the
5469 * accelerated path, since RAID path is unaware of these commands,
5470 * but not all underlying firmware can handle abort TMF.
5471 * Change abort to physical device reset when abort TMF is unsupported.
5473 if (abort->cmd_type == CMD_IOACCEL2) {
5474 if (HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags)
5475 return hpsa_send_abort_ioaccel2(h, abort,
5478 return hpsa_send_reset_as_abort_ioaccel2(h, scsi3addr,
5479 abort, reply_queue);
5481 return hpsa_send_abort(h, scsi3addr, abort, reply_queue);
5484 /* Find out which reply queue a command was meant to return on */
5485 static int hpsa_extract_reply_queue(struct ctlr_info *h,
5486 struct CommandList *c)
5488 if (c->cmd_type == CMD_IOACCEL2)
5489 return h->ioaccel2_cmd_pool[c->cmdindex].reply_queue;
5490 return c->Header.ReplyQueue;
5494 * Limit concurrency of abort commands to prevent
5495 * over-subscription of commands
5497 static inline int wait_for_available_abort_cmd(struct ctlr_info *h)
5499 #define ABORT_CMD_WAIT_MSECS 5000
5500 return !wait_event_timeout(h->abort_cmd_wait_queue,
5501 atomic_dec_if_positive(&h->abort_cmds_available) >= 0,
5502 msecs_to_jiffies(ABORT_CMD_WAIT_MSECS));
5505 /* Send an abort for the specified command.
5506 * If the device and controller support it,
5507 * send a task abort request.
5509 static int hpsa_eh_abort_handler(struct scsi_cmnd *sc)
5513 struct ctlr_info *h;
5514 struct hpsa_scsi_dev_t *dev;
5515 struct CommandList *abort; /* pointer to command to be aborted */
5516 struct scsi_cmnd *as; /* ptr to scsi cmd inside aborted command. */
5517 char msg[256]; /* For debug messaging. */
5519 __le32 tagupper, taglower;
5520 int refcount, reply_queue;
5525 if (sc->device == NULL)
5528 /* Find the controller of the command to be aborted */
5529 h = sdev_to_hba(sc->device);
5533 /* Find the device of the command to be aborted */
5534 dev = sc->device->hostdata;
5536 dev_err(&h->pdev->dev, "%s FAILED, Device lookup failed.\n",
5541 /* If controller locked up, we can guarantee command won't complete */
5542 if (lockup_detected(h)) {
5543 hpsa_show_dev_msg(KERN_WARNING, h, dev,
5544 "ABORT FAILED, lockup detected");
5548 /* This is a good time to check if controller lockup has occurred */
5549 if (detect_controller_lockup(h)) {
5550 hpsa_show_dev_msg(KERN_WARNING, h, dev,
5551 "ABORT FAILED, new lockup detected");
5555 /* Check that controller supports some kind of task abort */
5556 if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags) &&
5557 !(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags))
5560 memset(msg, 0, sizeof(msg));
5561 ml += sprintf(msg+ml, "scsi %d:%d:%d:%llu %s %p",
5562 h->scsi_host->host_no, sc->device->channel,
5563 sc->device->id, sc->device->lun,
5564 "Aborting command", sc);
5566 /* Get SCSI command to be aborted */
5567 abort = (struct CommandList *) sc->host_scribble;
5568 if (abort == NULL) {
5569 /* This can happen if the command already completed. */
5572 refcount = atomic_inc_return(&abort->refcount);
5573 if (refcount == 1) { /* Command is done already. */
5578 /* Don't bother trying the abort if we know it won't work. */
5579 if (abort->cmd_type != CMD_IOACCEL2 &&
5580 abort->cmd_type != CMD_IOACCEL1 && !dev->supports_aborts) {
5586 * Check that we're aborting the right command.
5587 * It's possible the CommandList already completed and got re-used.
5589 if (abort->scsi_cmd != sc) {
5594 abort->abort_pending = true;
5595 hpsa_get_tag(h, abort, &taglower, &tagupper);
5596 reply_queue = hpsa_extract_reply_queue(h, abort);
5597 ml += sprintf(msg+ml, "Tag:0x%08x:%08x ", tagupper, taglower);
5598 as = abort->scsi_cmd;
5600 ml += sprintf(msg+ml,
5601 "CDBLen: %d CDB: 0x%02x%02x... SN: 0x%lx ",
5602 as->cmd_len, as->cmnd[0], as->cmnd[1],
5604 dev_warn(&h->pdev->dev, "%s BEING SENT\n", msg);
5605 hpsa_show_dev_msg(KERN_WARNING, h, dev, "Aborting command");
5608 * Command is in flight, or possibly already completed
5609 * by the firmware (but not to the scsi mid layer) but we can't
5610 * distinguish which. Send the abort down.
5612 if (wait_for_available_abort_cmd(h)) {
5613 dev_warn(&h->pdev->dev,
5614 "%s FAILED, timeout waiting for an abort command to become available.\n",
5619 rc = hpsa_send_abort_both_ways(h, dev->scsi3addr, abort, reply_queue);
5620 atomic_inc(&h->abort_cmds_available);
5621 wake_up_all(&h->abort_cmd_wait_queue);
5623 dev_warn(&h->pdev->dev, "%s SENT, FAILED\n", msg);
5624 hpsa_show_dev_msg(KERN_WARNING, h, dev,
5625 "FAILED to abort command");
5629 dev_info(&h->pdev->dev, "%s SENT, SUCCESS\n", msg);
5630 wait_event(h->event_sync_wait_queue,
5631 abort->scsi_cmd != sc || lockup_detected(h));
5633 return !lockup_detected(h) ? SUCCESS : FAILED;
5637 * For operations with an associated SCSI command, a command block is allocated
5638 * at init, and managed by cmd_tagged_alloc() and cmd_tagged_free() using the
5639 * block request tag as an index into a table of entries. cmd_tagged_free() is
5640 * the complement, although cmd_free() may be called instead.
5642 static struct CommandList *cmd_tagged_alloc(struct ctlr_info *h,
5643 struct scsi_cmnd *scmd)
5645 int idx = hpsa_get_cmd_index(scmd);
5646 struct CommandList *c = h->cmd_pool + idx;
5648 if (idx < HPSA_NRESERVED_CMDS || idx >= h->nr_cmds) {
5649 dev_err(&h->pdev->dev, "Bad block tag: %d not in [%d..%d]\n",
5650 idx, HPSA_NRESERVED_CMDS, h->nr_cmds - 1);
5651 /* The index value comes from the block layer, so if it's out of
5652 * bounds, it's probably not our bug.
5657 atomic_inc(&c->refcount);
5658 if (unlikely(!hpsa_is_cmd_idle(c))) {
5660 * We expect that the SCSI layer will hand us a unique tag
5661 * value. Thus, there should never be a collision here between
5662 * two requests...because if the selected command isn't idle
5663 * then someone is going to be very disappointed.
5665 dev_err(&h->pdev->dev,
5666 "tag collision (tag=%d) in cmd_tagged_alloc().\n",
5668 if (c->scsi_cmd != NULL)
5669 scsi_print_command(c->scsi_cmd);
5670 scsi_print_command(scmd);
5673 hpsa_cmd_partial_init(h, idx, c);
5677 static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c)
5680 * Release our reference to the block. We don't need to do anything
5681 * else to free it, because it is accessed by index. (There's no point
5682 * in checking the result of the decrement, since we cannot guarantee
5683 * that there isn't a concurrent abort which is also accessing it.)
5685 (void)atomic_dec(&c->refcount);
5689 * For operations that cannot sleep, a command block is allocated at init,
5690 * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track
5691 * which ones are free or in use. Lock must be held when calling this.
5692 * cmd_free() is the complement.
5693 * This function never gives up and returns NULL. If it hangs,
5694 * another thread must call cmd_free() to free some tags.
5697 static struct CommandList *cmd_alloc(struct ctlr_info *h)
5699 struct CommandList *c;
5704 * There is some *extremely* small but non-zero chance that that
5705 * multiple threads could get in here, and one thread could
5706 * be scanning through the list of bits looking for a free
5707 * one, but the free ones are always behind him, and other
5708 * threads sneak in behind him and eat them before he can
5709 * get to them, so that while there is always a free one, a
5710 * very unlucky thread might be starved anyway, never able to
5711 * beat the other threads. In reality, this happens so
5712 * infrequently as to be indistinguishable from never.
5714 * Note that we start allocating commands before the SCSI host structure
5715 * is initialized. Since the search starts at bit zero, this
5716 * all works, since we have at least one command structure available;
5717 * however, it means that the structures with the low indexes have to be
5718 * reserved for driver-initiated requests, while requests from the block
5719 * layer will use the higher indexes.
5723 i = find_next_zero_bit(h->cmd_pool_bits,
5724 HPSA_NRESERVED_CMDS,
5726 if (unlikely(i >= HPSA_NRESERVED_CMDS)) {
5730 c = h->cmd_pool + i;
5731 refcount = atomic_inc_return(&c->refcount);
5732 if (unlikely(refcount > 1)) {
5733 cmd_free(h, c); /* already in use */
5734 offset = (i + 1) % HPSA_NRESERVED_CMDS;
5737 set_bit(i & (BITS_PER_LONG - 1),
5738 h->cmd_pool_bits + (i / BITS_PER_LONG));
5739 break; /* it's ours now. */
5741 hpsa_cmd_partial_init(h, i, c);
5746 * This is the complementary operation to cmd_alloc(). Note, however, in some
5747 * corner cases it may also be used to free blocks allocated by
5748 * cmd_tagged_alloc() in which case the ref-count decrement does the trick and
5749 * the clear-bit is harmless.
5751 static void cmd_free(struct ctlr_info *h, struct CommandList *c)
5753 if (atomic_dec_and_test(&c->refcount)) {
5756 i = c - h->cmd_pool;
5757 clear_bit(i & (BITS_PER_LONG - 1),
5758 h->cmd_pool_bits + (i / BITS_PER_LONG));
5762 #ifdef CONFIG_COMPAT
5764 static int hpsa_ioctl32_passthru(struct scsi_device *dev, int cmd,
5767 IOCTL32_Command_struct __user *arg32 =
5768 (IOCTL32_Command_struct __user *) arg;
5769 IOCTL_Command_struct arg64;
5770 IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64));
5774 memset(&arg64, 0, sizeof(arg64));
5776 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
5777 sizeof(arg64.LUN_info));
5778 err |= copy_from_user(&arg64.Request, &arg32->Request,
5779 sizeof(arg64.Request));
5780 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
5781 sizeof(arg64.error_info));
5782 err |= get_user(arg64.buf_size, &arg32->buf_size);
5783 err |= get_user(cp, &arg32->buf);
5784 arg64.buf = compat_ptr(cp);
5785 err |= copy_to_user(p, &arg64, sizeof(arg64));
5790 err = hpsa_ioctl(dev, CCISS_PASSTHRU, p);
5793 err |= copy_in_user(&arg32->error_info, &p->error_info,
5794 sizeof(arg32->error_info));
5800 static int hpsa_ioctl32_big_passthru(struct scsi_device *dev,
5801 int cmd, void __user *arg)
5803 BIG_IOCTL32_Command_struct __user *arg32 =
5804 (BIG_IOCTL32_Command_struct __user *) arg;
5805 BIG_IOCTL_Command_struct arg64;
5806 BIG_IOCTL_Command_struct __user *p =
5807 compat_alloc_user_space(sizeof(arg64));
5811 memset(&arg64, 0, sizeof(arg64));
5813 err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info,
5814 sizeof(arg64.LUN_info));
5815 err |= copy_from_user(&arg64.Request, &arg32->Request,
5816 sizeof(arg64.Request));
5817 err |= copy_from_user(&arg64.error_info, &arg32->error_info,
5818 sizeof(arg64.error_info));
5819 err |= get_user(arg64.buf_size, &arg32->buf_size);
5820 err |= get_user(arg64.malloc_size, &arg32->malloc_size);
5821 err |= get_user(cp, &arg32->buf);
5822 arg64.buf = compat_ptr(cp);
5823 err |= copy_to_user(p, &arg64, sizeof(arg64));
5828 err = hpsa_ioctl(dev, CCISS_BIG_PASSTHRU, p);
5831 err |= copy_in_user(&arg32->error_info, &p->error_info,
5832 sizeof(arg32->error_info));
5838 static int hpsa_compat_ioctl(struct scsi_device *dev, int cmd, void __user *arg)
5841 case CCISS_GETPCIINFO:
5842 case CCISS_GETINTINFO:
5843 case CCISS_SETINTINFO:
5844 case CCISS_GETNODENAME:
5845 case CCISS_SETNODENAME:
5846 case CCISS_GETHEARTBEAT:
5847 case CCISS_GETBUSTYPES:
5848 case CCISS_GETFIRMVER:
5849 case CCISS_GETDRIVVER:
5850 case CCISS_REVALIDVOLS:
5851 case CCISS_DEREGDISK:
5852 case CCISS_REGNEWDISK:
5854 case CCISS_RESCANDISK:
5855 case CCISS_GETLUNINFO:
5856 return hpsa_ioctl(dev, cmd, arg);
5858 case CCISS_PASSTHRU32:
5859 return hpsa_ioctl32_passthru(dev, cmd, arg);
5860 case CCISS_BIG_PASSTHRU32:
5861 return hpsa_ioctl32_big_passthru(dev, cmd, arg);
5864 return -ENOIOCTLCMD;
5869 static int hpsa_getpciinfo_ioctl(struct ctlr_info *h, void __user *argp)
5871 struct hpsa_pci_info pciinfo;
5875 pciinfo.domain = pci_domain_nr(h->pdev->bus);
5876 pciinfo.bus = h->pdev->bus->number;
5877 pciinfo.dev_fn = h->pdev->devfn;
5878 pciinfo.board_id = h->board_id;
5879 if (copy_to_user(argp, &pciinfo, sizeof(pciinfo)))
5884 static int hpsa_getdrivver_ioctl(struct ctlr_info *h, void __user *argp)
5886 DriverVer_type DriverVer;
5887 unsigned char vmaj, vmin, vsubmin;
5890 rc = sscanf(HPSA_DRIVER_VERSION, "%hhu.%hhu.%hhu",
5891 &vmaj, &vmin, &vsubmin);
5893 dev_info(&h->pdev->dev, "driver version string '%s' "
5894 "unrecognized.", HPSA_DRIVER_VERSION);
5899 DriverVer = (vmaj << 16) | (vmin << 8) | vsubmin;
5902 if (copy_to_user(argp, &DriverVer, sizeof(DriverVer_type)))
5907 static int hpsa_passthru_ioctl(struct ctlr_info *h, void __user *argp)
5909 IOCTL_Command_struct iocommand;
5910 struct CommandList *c;
5917 if (!capable(CAP_SYS_RAWIO))
5919 if (copy_from_user(&iocommand, argp, sizeof(iocommand)))
5921 if ((iocommand.buf_size < 1) &&
5922 (iocommand.Request.Type.Direction != XFER_NONE)) {
5925 if (iocommand.buf_size > 0) {
5926 buff = kmalloc(iocommand.buf_size, GFP_KERNEL);
5929 if (iocommand.Request.Type.Direction & XFER_WRITE) {
5930 /* Copy the data into the buffer we created */
5931 if (copy_from_user(buff, iocommand.buf,
5932 iocommand.buf_size)) {
5937 memset(buff, 0, iocommand.buf_size);
5942 /* Fill in the command type */
5943 c->cmd_type = CMD_IOCTL_PEND;
5944 c->scsi_cmd = SCSI_CMD_BUSY;
5945 /* Fill in Command Header */
5946 c->Header.ReplyQueue = 0; /* unused in simple mode */
5947 if (iocommand.buf_size > 0) { /* buffer to fill */
5948 c->Header.SGList = 1;
5949 c->Header.SGTotal = cpu_to_le16(1);
5950 } else { /* no buffers to fill */
5951 c->Header.SGList = 0;
5952 c->Header.SGTotal = cpu_to_le16(0);
5954 memcpy(&c->Header.LUN, &iocommand.LUN_info, sizeof(c->Header.LUN));
5956 /* Fill in Request block */
5957 memcpy(&c->Request, &iocommand.Request,
5958 sizeof(c->Request));
5960 /* Fill in the scatter gather information */
5961 if (iocommand.buf_size > 0) {
5962 temp64 = pci_map_single(h->pdev, buff,
5963 iocommand.buf_size, PCI_DMA_BIDIRECTIONAL);
5964 if (dma_mapping_error(&h->pdev->dev, (dma_addr_t) temp64)) {
5965 c->SG[0].Addr = cpu_to_le64(0);
5966 c->SG[0].Len = cpu_to_le32(0);
5970 c->SG[0].Addr = cpu_to_le64(temp64);
5971 c->SG[0].Len = cpu_to_le32(iocommand.buf_size);
5972 c->SG[0].Ext = cpu_to_le32(HPSA_SG_LAST); /* not chaining */
5974 rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT);
5975 if (iocommand.buf_size > 0)
5976 hpsa_pci_unmap(h->pdev, c, 1, PCI_DMA_BIDIRECTIONAL);
5977 check_ioctl_unit_attention(h, c);
5983 /* Copy the error information out */
5984 memcpy(&iocommand.error_info, c->err_info,
5985 sizeof(iocommand.error_info));
5986 if (copy_to_user(argp, &iocommand, sizeof(iocommand))) {
5990 if ((iocommand.Request.Type.Direction & XFER_READ) &&
5991 iocommand.buf_size > 0) {
5992 /* Copy the data out of the buffer we created */
5993 if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) {
6005 static int hpsa_big_passthru_ioctl(struct ctlr_info *h, void __user *argp)
6007 BIG_IOCTL_Command_struct *ioc;
6008 struct CommandList *c;
6009 unsigned char **buff = NULL;
6010 int *buff_size = NULL;
6016 BYTE __user *data_ptr;
6020 if (!capable(CAP_SYS_RAWIO))
6022 ioc = (BIG_IOCTL_Command_struct *)
6023 kmalloc(sizeof(*ioc), GFP_KERNEL);
6028 if (copy_from_user(ioc, argp, sizeof(*ioc))) {
6032 if ((ioc->buf_size < 1) &&
6033 (ioc->Request.Type.Direction != XFER_NONE)) {
6037 /* Check kmalloc limits using all SGs */
6038 if (ioc->malloc_size > MAX_KMALLOC_SIZE) {
6042 if (ioc->buf_size > ioc->malloc_size * SG_ENTRIES_IN_CMD) {
6046 buff = kzalloc(SG_ENTRIES_IN_CMD * sizeof(char *), GFP_KERNEL);
6051 buff_size = kmalloc(SG_ENTRIES_IN_CMD * sizeof(int), GFP_KERNEL);
6056 left = ioc->buf_size;
6057 data_ptr = ioc->buf;
6059 sz = (left > ioc->malloc_size) ? ioc->malloc_size : left;
6060 buff_size[sg_used] = sz;
6061 buff[sg_used] = kmalloc(sz, GFP_KERNEL);
6062 if (buff[sg_used] == NULL) {
6066 if (ioc->Request.Type.Direction & XFER_WRITE) {
6067 if (copy_from_user(buff[sg_used], data_ptr, sz)) {
6072 memset(buff[sg_used], 0, sz);
6079 c->cmd_type = CMD_IOCTL_PEND;
6080 c->scsi_cmd = SCSI_CMD_BUSY;
6081 c->Header.ReplyQueue = 0;
6082 c->Header.SGList = (u8) sg_used;
6083 c->Header.SGTotal = cpu_to_le16(sg_used);
6084 memcpy(&c->Header.LUN, &ioc->LUN_info, sizeof(c->Header.LUN));
6085 memcpy(&c->Request, &ioc->Request, sizeof(c->Request));
6086 if (ioc->buf_size > 0) {
6088 for (i = 0; i < sg_used; i++) {
6089 temp64 = pci_map_single(h->pdev, buff[i],
6090 buff_size[i], PCI_DMA_BIDIRECTIONAL);
6091 if (dma_mapping_error(&h->pdev->dev,
6092 (dma_addr_t) temp64)) {
6093 c->SG[i].Addr = cpu_to_le64(0);
6094 c->SG[i].Len = cpu_to_le32(0);
6095 hpsa_pci_unmap(h->pdev, c, i,
6096 PCI_DMA_BIDIRECTIONAL);
6100 c->SG[i].Addr = cpu_to_le64(temp64);
6101 c->SG[i].Len = cpu_to_le32(buff_size[i]);
6102 c->SG[i].Ext = cpu_to_le32(0);
6104 c->SG[--i].Ext = cpu_to_le32(HPSA_SG_LAST);
6106 status = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, NO_TIMEOUT);
6108 hpsa_pci_unmap(h->pdev, c, sg_used, PCI_DMA_BIDIRECTIONAL);
6109 check_ioctl_unit_attention(h, c);
6115 /* Copy the error information out */
6116 memcpy(&ioc->error_info, c->err_info, sizeof(ioc->error_info));
6117 if (copy_to_user(argp, ioc, sizeof(*ioc))) {
6121 if ((ioc->Request.Type.Direction & XFER_READ) && ioc->buf_size > 0) {
6124 /* Copy the data out of the buffer we created */
6125 BYTE __user *ptr = ioc->buf;
6126 for (i = 0; i < sg_used; i++) {
6127 if (copy_to_user(ptr, buff[i], buff_size[i])) {
6131 ptr += buff_size[i];
6141 for (i = 0; i < sg_used; i++)
6150 static void check_ioctl_unit_attention(struct ctlr_info *h,
6151 struct CommandList *c)
6153 if (c->err_info->CommandStatus == CMD_TARGET_STATUS &&
6154 c->err_info->ScsiStatus != SAM_STAT_CHECK_CONDITION)
6155 (void) check_for_unit_attention(h, c);
6161 static int hpsa_ioctl(struct scsi_device *dev, int cmd, void __user *arg)
6163 struct ctlr_info *h;
6164 void __user *argp = (void __user *)arg;
6167 h = sdev_to_hba(dev);
6170 case CCISS_DEREGDISK:
6171 case CCISS_REGNEWDISK:
6173 hpsa_scan_start(h->scsi_host);
6175 case CCISS_GETPCIINFO:
6176 return hpsa_getpciinfo_ioctl(h, argp);
6177 case CCISS_GETDRIVVER:
6178 return hpsa_getdrivver_ioctl(h, argp);
6179 case CCISS_PASSTHRU:
6180 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
6182 rc = hpsa_passthru_ioctl(h, argp);
6183 atomic_inc(&h->passthru_cmds_avail);
6185 case CCISS_BIG_PASSTHRU:
6186 if (atomic_dec_if_positive(&h->passthru_cmds_avail) < 0)
6188 rc = hpsa_big_passthru_ioctl(h, argp);
6189 atomic_inc(&h->passthru_cmds_avail);
6196 static void hpsa_send_host_reset(struct ctlr_info *h, unsigned char *scsi3addr,
6199 struct CommandList *c;
6203 /* fill_cmd can't fail here, no data buffer to map */
6204 (void) fill_cmd(c, HPSA_DEVICE_RESET_MSG, h, NULL, 0, 0,
6205 RAID_CTLR_LUNID, TYPE_MSG);
6206 c->Request.CDB[1] = reset_type; /* fill_cmd defaults to target reset */
6208 enqueue_cmd_and_start_io(h, c);
6209 /* Don't wait for completion, the reset won't complete. Don't free
6210 * the command either. This is the last command we will send before
6211 * re-initializing everything, so it doesn't matter and won't leak.
6216 static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h,
6217 void *buff, size_t size, u16 page_code, unsigned char *scsi3addr,
6220 int pci_dir = XFER_NONE;
6221 u64 tag; /* for commands to be aborted */
6223 c->cmd_type = CMD_IOCTL_PEND;
6224 c->scsi_cmd = SCSI_CMD_BUSY;
6225 c->Header.ReplyQueue = 0;
6226 if (buff != NULL && size > 0) {
6227 c->Header.SGList = 1;
6228 c->Header.SGTotal = cpu_to_le16(1);
6230 c->Header.SGList = 0;
6231 c->Header.SGTotal = cpu_to_le16(0);
6233 memcpy(c->Header.LUN.LunAddrBytes, scsi3addr, 8);
6235 if (cmd_type == TYPE_CMD) {
6238 /* are we trying to read a vital product page */
6239 if (page_code & VPD_PAGE) {
6240 c->Request.CDB[1] = 0x01;
6241 c->Request.CDB[2] = (page_code & 0xff);
6243 c->Request.CDBLen = 6;
6244 c->Request.type_attr_dir =
6245 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6246 c->Request.Timeout = 0;
6247 c->Request.CDB[0] = HPSA_INQUIRY;
6248 c->Request.CDB[4] = size & 0xFF;
6250 case HPSA_REPORT_LOG:
6251 case HPSA_REPORT_PHYS:
6252 /* Talking to controller so It's a physical command
6253 mode = 00 target = 0. Nothing to write.
6255 c->Request.CDBLen = 12;
6256 c->Request.type_attr_dir =
6257 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6258 c->Request.Timeout = 0;
6259 c->Request.CDB[0] = cmd;
6260 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
6261 c->Request.CDB[7] = (size >> 16) & 0xFF;
6262 c->Request.CDB[8] = (size >> 8) & 0xFF;
6263 c->Request.CDB[9] = size & 0xFF;
6265 case HPSA_CACHE_FLUSH:
6266 c->Request.CDBLen = 12;
6267 c->Request.type_attr_dir =
6268 TYPE_ATTR_DIR(cmd_type,
6269 ATTR_SIMPLE, XFER_WRITE);
6270 c->Request.Timeout = 0;
6271 c->Request.CDB[0] = BMIC_WRITE;
6272 c->Request.CDB[6] = BMIC_CACHE_FLUSH;
6273 c->Request.CDB[7] = (size >> 8) & 0xFF;
6274 c->Request.CDB[8] = size & 0xFF;
6276 case TEST_UNIT_READY:
6277 c->Request.CDBLen = 6;
6278 c->Request.type_attr_dir =
6279 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
6280 c->Request.Timeout = 0;
6282 case HPSA_GET_RAID_MAP:
6283 c->Request.CDBLen = 12;
6284 c->Request.type_attr_dir =
6285 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6286 c->Request.Timeout = 0;
6287 c->Request.CDB[0] = HPSA_CISS_READ;
6288 c->Request.CDB[1] = cmd;
6289 c->Request.CDB[6] = (size >> 24) & 0xFF; /* MSB */
6290 c->Request.CDB[7] = (size >> 16) & 0xFF;
6291 c->Request.CDB[8] = (size >> 8) & 0xFF;
6292 c->Request.CDB[9] = size & 0xFF;
6294 case BMIC_SENSE_CONTROLLER_PARAMETERS:
6295 c->Request.CDBLen = 10;
6296 c->Request.type_attr_dir =
6297 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6298 c->Request.Timeout = 0;
6299 c->Request.CDB[0] = BMIC_READ;
6300 c->Request.CDB[6] = BMIC_SENSE_CONTROLLER_PARAMETERS;
6301 c->Request.CDB[7] = (size >> 16) & 0xFF;
6302 c->Request.CDB[8] = (size >> 8) & 0xFF;
6304 case BMIC_IDENTIFY_PHYSICAL_DEVICE:
6305 c->Request.CDBLen = 10;
6306 c->Request.type_attr_dir =
6307 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_READ);
6308 c->Request.Timeout = 0;
6309 c->Request.CDB[0] = BMIC_READ;
6310 c->Request.CDB[6] = BMIC_IDENTIFY_PHYSICAL_DEVICE;
6311 c->Request.CDB[7] = (size >> 16) & 0xFF;
6312 c->Request.CDB[8] = (size >> 8) & 0XFF;
6315 dev_warn(&h->pdev->dev, "unknown command 0x%c\n", cmd);
6319 } else if (cmd_type == TYPE_MSG) {
6322 case HPSA_DEVICE_RESET_MSG:
6323 c->Request.CDBLen = 16;
6324 c->Request.type_attr_dir =
6325 TYPE_ATTR_DIR(cmd_type, ATTR_SIMPLE, XFER_NONE);
6326 c->Request.Timeout = 0; /* Don't time out */
6327 memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB));
6328 c->Request.CDB[0] = cmd;
6329 c->Request.CDB[1] = HPSA_RESET_TYPE_LUN;
6330 /* If bytes 4-7 are zero, it means reset the */
6332 c->Request.CDB[4] = 0x00;
6333 c->Request.CDB[5] = 0x00;
6334 c->Request.CDB[6] = 0x00;
6335 c->Request.CDB[7] = 0x00;
6337 case HPSA_ABORT_MSG:
6338 memcpy(&tag, buff, sizeof(tag));
6339 dev_dbg(&h->pdev->dev,
6340 "Abort Tag:0x%016llx using rqst Tag:0x%016llx",
6341 tag, c->Header.tag);
6342 c->Request.CDBLen = 16;
6343 c->Request.type_attr_dir =
6344 TYPE_ATTR_DIR(cmd_type,
6345 ATTR_SIMPLE, XFER_WRITE);
6346 c->Request.Timeout = 0; /* Don't time out */
6347 c->Request.CDB[0] = HPSA_TASK_MANAGEMENT;
6348 c->Request.CDB[1] = HPSA_TMF_ABORT_TASK;
6349 c->Request.CDB[2] = 0x00; /* reserved */
6350 c->Request.CDB[3] = 0x00; /* reserved */
6351 /* Tag to abort goes in CDB[4]-CDB[11] */
6352 memcpy(&c->Request.CDB[4], &tag, sizeof(tag));
6353 c->Request.CDB[12] = 0x00; /* reserved */
6354 c->Request.CDB[13] = 0x00; /* reserved */
6355 c->Request.CDB[14] = 0x00; /* reserved */
6356 c->Request.CDB[15] = 0x00; /* reserved */
6359 dev_warn(&h->pdev->dev, "unknown message type %d\n",
6364 dev_warn(&h->pdev->dev, "unknown command type %d\n", cmd_type);
6368 switch (GET_DIR(c->Request.type_attr_dir)) {
6370 pci_dir = PCI_DMA_FROMDEVICE;
6373 pci_dir = PCI_DMA_TODEVICE;
6376 pci_dir = PCI_DMA_NONE;
6379 pci_dir = PCI_DMA_BIDIRECTIONAL;
6381 if (hpsa_map_one(h->pdev, c, buff, size, pci_dir))
6387 * Map (physical) PCI mem into (virtual) kernel space
6389 static void __iomem *remap_pci_mem(ulong base, ulong size)
6391 ulong page_base = ((ulong) base) & PAGE_MASK;
6392 ulong page_offs = ((ulong) base) - page_base;
6393 void __iomem *page_remapped = ioremap_nocache(page_base,
6396 return page_remapped ? (page_remapped + page_offs) : NULL;
6399 static inline unsigned long get_next_completion(struct ctlr_info *h, u8 q)
6401 return h->access.command_completed(h, q);
6404 static inline bool interrupt_pending(struct ctlr_info *h)
6406 return h->access.intr_pending(h);
6409 static inline long interrupt_not_for_us(struct ctlr_info *h)
6411 return (h->access.intr_pending(h) == 0) ||
6412 (h->interrupts_enabled == 0);
6415 static inline int bad_tag(struct ctlr_info *h, u32 tag_index,
6418 if (unlikely(tag_index >= h->nr_cmds)) {
6419 dev_warn(&h->pdev->dev, "bad tag 0x%08x ignored.\n", raw_tag);
6425 static inline void finish_cmd(struct CommandList *c)
6427 dial_up_lockup_detection_on_fw_flash_complete(c->h, c);
6428 if (likely(c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_SCSI
6429 || c->cmd_type == CMD_IOACCEL2))
6430 complete_scsi_command(c);
6431 else if (c->cmd_type == CMD_IOCTL_PEND || c->cmd_type == IOACCEL2_TMF)
6432 complete(c->waiting);
6436 static inline u32 hpsa_tag_discard_error_bits(struct ctlr_info *h, u32 tag)
6438 #define HPSA_PERF_ERROR_BITS ((1 << DIRECT_LOOKUP_SHIFT) - 1)
6439 #define HPSA_SIMPLE_ERROR_BITS 0x03
6440 if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant)))
6441 return tag & ~HPSA_SIMPLE_ERROR_BITS;
6442 return tag & ~HPSA_PERF_ERROR_BITS;
6445 /* process completion of an indexed ("direct lookup") command */
6446 static inline void process_indexed_cmd(struct ctlr_info *h,
6450 struct CommandList *c;
6452 tag_index = raw_tag >> DIRECT_LOOKUP_SHIFT;
6453 if (!bad_tag(h, tag_index, raw_tag)) {
6454 c = h->cmd_pool + tag_index;
6459 /* Some controllers, like p400, will give us one interrupt
6460 * after a soft reset, even if we turned interrupts off.
6461 * Only need to check for this in the hpsa_xxx_discard_completions
6464 static int ignore_bogus_interrupt(struct ctlr_info *h)
6466 if (likely(!reset_devices))
6469 if (likely(h->interrupts_enabled))
6472 dev_info(&h->pdev->dev, "Received interrupt while interrupts disabled "
6473 "(known firmware bug.) Ignoring.\n");
6479 * Convert &h->q[x] (passed to interrupt handlers) back to h.
6480 * Relies on (h-q[x] == x) being true for x such that
6481 * 0 <= x < MAX_REPLY_QUEUES.
6483 static struct ctlr_info *queue_to_hba(u8 *queue)
6485 return container_of((queue - *queue), struct ctlr_info, q[0]);
6488 static irqreturn_t hpsa_intx_discard_completions(int irq, void *queue)
6490 struct ctlr_info *h = queue_to_hba(queue);
6491 u8 q = *(u8 *) queue;
6494 if (ignore_bogus_interrupt(h))
6497 if (interrupt_not_for_us(h))
6499 h->last_intr_timestamp = get_jiffies_64();
6500 while (interrupt_pending(h)) {
6501 raw_tag = get_next_completion(h, q);
6502 while (raw_tag != FIFO_EMPTY)
6503 raw_tag = next_command(h, q);
6508 static irqreturn_t hpsa_msix_discard_completions(int irq, void *queue)
6510 struct ctlr_info *h = queue_to_hba(queue);
6512 u8 q = *(u8 *) queue;
6514 if (ignore_bogus_interrupt(h))
6517 h->last_intr_timestamp = get_jiffies_64();
6518 raw_tag = get_next_completion(h, q);
6519 while (raw_tag != FIFO_EMPTY)
6520 raw_tag = next_command(h, q);
6524 static irqreturn_t do_hpsa_intr_intx(int irq, void *queue)
6526 struct ctlr_info *h = queue_to_hba((u8 *) queue);
6528 u8 q = *(u8 *) queue;
6530 if (interrupt_not_for_us(h))
6532 h->last_intr_timestamp = get_jiffies_64();
6533 while (interrupt_pending(h)) {
6534 raw_tag = get_next_completion(h, q);
6535 while (raw_tag != FIFO_EMPTY) {
6536 process_indexed_cmd(h, raw_tag);
6537 raw_tag = next_command(h, q);
6543 static irqreturn_t do_hpsa_intr_msi(int irq, void *queue)
6545 struct ctlr_info *h = queue_to_hba(queue);
6547 u8 q = *(u8 *) queue;
6549 h->last_intr_timestamp = get_jiffies_64();
6550 raw_tag = get_next_completion(h, q);
6551 while (raw_tag != FIFO_EMPTY) {
6552 process_indexed_cmd(h, raw_tag);
6553 raw_tag = next_command(h, q);
6558 /* Send a message CDB to the firmware. Careful, this only works
6559 * in simple mode, not performant mode due to the tag lookup.
6560 * We only ever use this immediately after a controller reset.
6562 static int hpsa_message(struct pci_dev *pdev, unsigned char opcode,
6566 struct CommandListHeader CommandHeader;
6567 struct RequestBlock Request;
6568 struct ErrDescriptor ErrorDescriptor;
6570 struct Command *cmd;
6571 static const size_t cmd_sz = sizeof(*cmd) +
6572 sizeof(cmd->ErrorDescriptor);
6576 void __iomem *vaddr;
6579 vaddr = pci_ioremap_bar(pdev, 0);
6583 /* The Inbound Post Queue only accepts 32-bit physical addresses for the
6584 * CCISS commands, so they must be allocated from the lower 4GiB of
6587 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
6593 cmd = pci_alloc_consistent(pdev, cmd_sz, &paddr64);
6599 /* This must fit, because of the 32-bit consistent DMA mask. Also,
6600 * although there's no guarantee, we assume that the address is at
6601 * least 4-byte aligned (most likely, it's page-aligned).
6603 paddr32 = cpu_to_le32(paddr64);
6605 cmd->CommandHeader.ReplyQueue = 0;
6606 cmd->CommandHeader.SGList = 0;
6607 cmd->CommandHeader.SGTotal = cpu_to_le16(0);
6608 cmd->CommandHeader.tag = cpu_to_le64(paddr64);
6609 memset(&cmd->CommandHeader.LUN.LunAddrBytes, 0, 8);
6611 cmd->Request.CDBLen = 16;
6612 cmd->Request.type_attr_dir =
6613 TYPE_ATTR_DIR(TYPE_MSG, ATTR_HEADOFQUEUE, XFER_NONE);
6614 cmd->Request.Timeout = 0; /* Don't time out */
6615 cmd->Request.CDB[0] = opcode;
6616 cmd->Request.CDB[1] = type;
6617 memset(&cmd->Request.CDB[2], 0, 14); /* rest of the CDB is reserved */
6618 cmd->ErrorDescriptor.Addr =
6619 cpu_to_le64((le32_to_cpu(paddr32) + sizeof(*cmd)));
6620 cmd->ErrorDescriptor.Len = cpu_to_le32(sizeof(struct ErrorInfo));
6622 writel(le32_to_cpu(paddr32), vaddr + SA5_REQUEST_PORT_OFFSET);
6624 for (i = 0; i < HPSA_MSG_SEND_RETRY_LIMIT; i++) {
6625 tag = readl(vaddr + SA5_REPLY_PORT_OFFSET);
6626 if ((tag & ~HPSA_SIMPLE_ERROR_BITS) == paddr64)
6628 msleep(HPSA_MSG_SEND_RETRY_INTERVAL_MSECS);
6633 /* we leak the DMA buffer here ... no choice since the controller could
6634 * still complete the command.
6636 if (i == HPSA_MSG_SEND_RETRY_LIMIT) {
6637 dev_err(&pdev->dev, "controller message %02x:%02x timed out\n",
6642 pci_free_consistent(pdev, cmd_sz, cmd, paddr64);
6644 if (tag & HPSA_ERROR_BIT) {
6645 dev_err(&pdev->dev, "controller message %02x:%02x failed\n",
6650 dev_info(&pdev->dev, "controller message %02x:%02x succeeded\n",
6655 #define hpsa_noop(p) hpsa_message(p, 3, 0)
6657 static int hpsa_controller_hard_reset(struct pci_dev *pdev,
6658 void __iomem *vaddr, u32 use_doorbell)
6662 /* For everything after the P600, the PCI power state method
6663 * of resetting the controller doesn't work, so we have this
6664 * other way using the doorbell register.
6666 dev_info(&pdev->dev, "using doorbell to reset controller\n");
6667 writel(use_doorbell, vaddr + SA5_DOORBELL);
6669 /* PMC hardware guys tell us we need a 10 second delay after
6670 * doorbell reset and before any attempt to talk to the board
6671 * at all to ensure that this actually works and doesn't fall
6672 * over in some weird corner cases.
6675 } else { /* Try to do it the PCI power state way */
6677 /* Quoting from the Open CISS Specification: "The Power
6678 * Management Control/Status Register (CSR) controls the power
6679 * state of the device. The normal operating state is D0,
6680 * CSR=00h. The software off state is D3, CSR=03h. To reset
6681 * the controller, place the interface device in D3 then to D0,
6682 * this causes a secondary PCI reset which will reset the
6687 dev_info(&pdev->dev, "using PCI PM to reset controller\n");
6689 /* enter the D3hot power management state */
6690 rc = pci_set_power_state(pdev, PCI_D3hot);
6696 /* enter the D0 power management state */
6697 rc = pci_set_power_state(pdev, PCI_D0);
6702 * The P600 requires a small delay when changing states.
6703 * Otherwise we may think the board did not reset and we bail.
6704 * This for kdump only and is particular to the P600.
6711 static void init_driver_version(char *driver_version, int len)
6713 memset(driver_version, 0, len);
6714 strncpy(driver_version, HPSA " " HPSA_DRIVER_VERSION, len - 1);
6717 static int write_driver_ver_to_cfgtable(struct CfgTable __iomem *cfgtable)
6719 char *driver_version;
6720 int i, size = sizeof(cfgtable->driver_version);
6722 driver_version = kmalloc(size, GFP_KERNEL);
6723 if (!driver_version)
6726 init_driver_version(driver_version, size);
6727 for (i = 0; i < size; i++)
6728 writeb(driver_version[i], &cfgtable->driver_version[i]);
6729 kfree(driver_version);
6733 static void read_driver_ver_from_cfgtable(struct CfgTable __iomem *cfgtable,
6734 unsigned char *driver_ver)
6738 for (i = 0; i < sizeof(cfgtable->driver_version); i++)
6739 driver_ver[i] = readb(&cfgtable->driver_version[i]);
6742 static int controller_reset_failed(struct CfgTable __iomem *cfgtable)
6745 char *driver_ver, *old_driver_ver;
6746 int rc, size = sizeof(cfgtable->driver_version);
6748 old_driver_ver = kmalloc(2 * size, GFP_KERNEL);
6749 if (!old_driver_ver)
6751 driver_ver = old_driver_ver + size;
6753 /* After a reset, the 32 bytes of "driver version" in the cfgtable
6754 * should have been changed, otherwise we know the reset failed.
6756 init_driver_version(old_driver_ver, size);
6757 read_driver_ver_from_cfgtable(cfgtable, driver_ver);
6758 rc = !memcmp(driver_ver, old_driver_ver, size);
6759 kfree(old_driver_ver);
6762 /* This does a hard reset of the controller using PCI power management
6763 * states or the using the doorbell register.
6765 static int hpsa_kdump_hard_reset_controller(struct pci_dev *pdev, u32 board_id)
6769 u64 cfg_base_addr_index;
6770 void __iomem *vaddr;
6771 unsigned long paddr;
6772 u32 misc_fw_support;
6774 struct CfgTable __iomem *cfgtable;
6776 u16 command_register;
6778 /* For controllers as old as the P600, this is very nearly
6781 * pci_save_state(pci_dev);
6782 * pci_set_power_state(pci_dev, PCI_D3hot);
6783 * pci_set_power_state(pci_dev, PCI_D0);
6784 * pci_restore_state(pci_dev);
6786 * For controllers newer than the P600, the pci power state
6787 * method of resetting doesn't work so we have another way
6788 * using the doorbell register.
6791 if (!ctlr_is_resettable(board_id)) {
6792 dev_warn(&pdev->dev, "Controller not resettable\n");
6796 /* if controller is soft- but not hard resettable... */
6797 if (!ctlr_is_hard_resettable(board_id))
6798 return -ENOTSUPP; /* try soft reset later. */
6800 /* Save the PCI command register */
6801 pci_read_config_word(pdev, 4, &command_register);
6802 pci_save_state(pdev);
6804 /* find the first memory BAR, so we can find the cfg table */
6805 rc = hpsa_pci_find_memory_BAR(pdev, &paddr);
6808 vaddr = remap_pci_mem(paddr, 0x250);
6812 /* find cfgtable in order to check if reset via doorbell is supported */
6813 rc = hpsa_find_cfg_addrs(pdev, vaddr, &cfg_base_addr,
6814 &cfg_base_addr_index, &cfg_offset);
6817 cfgtable = remap_pci_mem(pci_resource_start(pdev,
6818 cfg_base_addr_index) + cfg_offset, sizeof(*cfgtable));
6823 rc = write_driver_ver_to_cfgtable(cfgtable);
6825 goto unmap_cfgtable;
6827 /* If reset via doorbell register is supported, use that.
6828 * There are two such methods. Favor the newest method.
6830 misc_fw_support = readl(&cfgtable->misc_fw_support);
6831 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET2;
6833 use_doorbell = DOORBELL_CTLR_RESET2;
6835 use_doorbell = misc_fw_support & MISC_FW_DOORBELL_RESET;
6837 dev_warn(&pdev->dev,
6838 "Soft reset not supported. Firmware update is required.\n");
6839 rc = -ENOTSUPP; /* try soft reset */
6840 goto unmap_cfgtable;
6844 rc = hpsa_controller_hard_reset(pdev, vaddr, use_doorbell);
6846 goto unmap_cfgtable;
6848 pci_restore_state(pdev);
6849 pci_write_config_word(pdev, 4, command_register);
6851 /* Some devices (notably the HP Smart Array 5i Controller)
6852 need a little pause here */
6853 msleep(HPSA_POST_RESET_PAUSE_MSECS);
6855 rc = hpsa_wait_for_board_state(pdev, vaddr, BOARD_READY);
6857 dev_warn(&pdev->dev,
6858 "Failed waiting for board to become ready after hard reset\n");
6859 goto unmap_cfgtable;
6862 rc = controller_reset_failed(vaddr);
6864 goto unmap_cfgtable;
6866 dev_warn(&pdev->dev, "Unable to successfully reset "
6867 "controller. Will try soft reset.\n");
6870 dev_info(&pdev->dev, "board ready after hard reset.\n");
6882 * We cannot read the structure directly, for portability we must use
6884 * This is for debug only.
6886 static void print_cfg_table(struct device *dev, struct CfgTable __iomem *tb)
6892 dev_info(dev, "Controller Configuration information\n");
6893 dev_info(dev, "------------------------------------\n");
6894 for (i = 0; i < 4; i++)
6895 temp_name[i] = readb(&(tb->Signature[i]));
6896 temp_name[4] = '\0';
6897 dev_info(dev, " Signature = %s\n", temp_name);
6898 dev_info(dev, " Spec Number = %d\n", readl(&(tb->SpecValence)));
6899 dev_info(dev, " Transport methods supported = 0x%x\n",
6900 readl(&(tb->TransportSupport)));
6901 dev_info(dev, " Transport methods active = 0x%x\n",
6902 readl(&(tb->TransportActive)));
6903 dev_info(dev, " Requested transport Method = 0x%x\n",
6904 readl(&(tb->HostWrite.TransportRequest)));
6905 dev_info(dev, " Coalesce Interrupt Delay = 0x%x\n",
6906 readl(&(tb->HostWrite.CoalIntDelay)));
6907 dev_info(dev, " Coalesce Interrupt Count = 0x%x\n",
6908 readl(&(tb->HostWrite.CoalIntCount)));
6909 dev_info(dev, " Max outstanding commands = %d\n",
6910 readl(&(tb->CmdsOutMax)));
6911 dev_info(dev, " Bus Types = 0x%x\n", readl(&(tb->BusTypes)));
6912 for (i = 0; i < 16; i++)
6913 temp_name[i] = readb(&(tb->ServerName[i]));
6914 temp_name[16] = '\0';
6915 dev_info(dev, " Server Name = %s\n", temp_name);
6916 dev_info(dev, " Heartbeat Counter = 0x%x\n\n\n",
6917 readl(&(tb->HeartBeat)));
6918 #endif /* HPSA_DEBUG */
6921 static int find_PCI_BAR_index(struct pci_dev *pdev, unsigned long pci_bar_addr)
6923 int i, offset, mem_type, bar_type;
6925 if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */
6928 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
6929 bar_type = pci_resource_flags(pdev, i) & PCI_BASE_ADDRESS_SPACE;
6930 if (bar_type == PCI_BASE_ADDRESS_SPACE_IO)
6933 mem_type = pci_resource_flags(pdev, i) &
6934 PCI_BASE_ADDRESS_MEM_TYPE_MASK;
6936 case PCI_BASE_ADDRESS_MEM_TYPE_32:
6937 case PCI_BASE_ADDRESS_MEM_TYPE_1M:
6938 offset += 4; /* 32 bit */
6940 case PCI_BASE_ADDRESS_MEM_TYPE_64:
6943 default: /* reserved in PCI 2.2 */
6944 dev_warn(&pdev->dev,
6945 "base address is invalid\n");
6950 if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0)
6956 static void hpsa_disable_interrupt_mode(struct ctlr_info *h)
6958 if (h->msix_vector) {
6959 if (h->pdev->msix_enabled)
6960 pci_disable_msix(h->pdev);
6962 } else if (h->msi_vector) {
6963 if (h->pdev->msi_enabled)
6964 pci_disable_msi(h->pdev);
6969 /* If MSI/MSI-X is supported by the kernel we will try to enable it on
6970 * controllers that are capable. If not, we use legacy INTx mode.
6972 static void hpsa_interrupt_mode(struct ctlr_info *h)
6974 #ifdef CONFIG_PCI_MSI
6976 struct msix_entry hpsa_msix_entries[MAX_REPLY_QUEUES];
6978 for (i = 0; i < MAX_REPLY_QUEUES; i++) {
6979 hpsa_msix_entries[i].vector = 0;
6980 hpsa_msix_entries[i].entry = i;
6983 /* Some boards advertise MSI but don't really support it */
6984 if ((h->board_id == 0x40700E11) || (h->board_id == 0x40800E11) ||
6985 (h->board_id == 0x40820E11) || (h->board_id == 0x40830E11))
6986 goto default_int_mode;
6987 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSIX)) {
6988 dev_info(&h->pdev->dev, "MSI-X capable controller\n");
6989 h->msix_vector = MAX_REPLY_QUEUES;
6990 if (h->msix_vector > num_online_cpus())
6991 h->msix_vector = num_online_cpus();
6992 err = pci_enable_msix_range(h->pdev, hpsa_msix_entries,
6995 dev_warn(&h->pdev->dev, "MSI-X init failed %d\n", err);
6997 goto single_msi_mode;
6998 } else if (err < h->msix_vector) {
6999 dev_warn(&h->pdev->dev, "only %d MSI-X vectors "
7000 "available\n", err);
7002 h->msix_vector = err;
7003 for (i = 0; i < h->msix_vector; i++)
7004 h->intr[i] = hpsa_msix_entries[i].vector;
7008 if (pci_find_capability(h->pdev, PCI_CAP_ID_MSI)) {
7009 dev_info(&h->pdev->dev, "MSI capable controller\n");
7010 if (!pci_enable_msi(h->pdev))
7013 dev_warn(&h->pdev->dev, "MSI init failed\n");
7016 #endif /* CONFIG_PCI_MSI */
7017 /* if we get here we're going to use the default interrupt mode */
7018 h->intr[h->intr_mode] = h->pdev->irq;
7021 static int hpsa_lookup_board_id(struct pci_dev *pdev, u32 *board_id)
7024 u32 subsystem_vendor_id, subsystem_device_id;
7026 subsystem_vendor_id = pdev->subsystem_vendor;
7027 subsystem_device_id = pdev->subsystem_device;
7028 *board_id = ((subsystem_device_id << 16) & 0xffff0000) |
7029 subsystem_vendor_id;
7031 for (i = 0; i < ARRAY_SIZE(products); i++)
7032 if (*board_id == products[i].board_id)
7035 if ((subsystem_vendor_id != PCI_VENDOR_ID_HP &&
7036 subsystem_vendor_id != PCI_VENDOR_ID_COMPAQ) ||
7038 dev_warn(&pdev->dev, "unrecognized board ID: "
7039 "0x%08x, ignoring.\n", *board_id);
7042 return ARRAY_SIZE(products) - 1; /* generic unknown smart array */
7045 static int hpsa_pci_find_memory_BAR(struct pci_dev *pdev,
7046 unsigned long *memory_bar)
7050 for (i = 0; i < DEVICE_COUNT_RESOURCE; i++)
7051 if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) {
7052 /* addressing mode bits already removed */
7053 *memory_bar = pci_resource_start(pdev, i);
7054 dev_dbg(&pdev->dev, "memory BAR = %lx\n",
7058 dev_warn(&pdev->dev, "no memory BAR found\n");
7062 static int hpsa_wait_for_board_state(struct pci_dev *pdev, void __iomem *vaddr,
7068 iterations = HPSA_BOARD_READY_ITERATIONS;
7070 iterations = HPSA_BOARD_NOT_READY_ITERATIONS;
7072 for (i = 0; i < iterations; i++) {
7073 scratchpad = readl(vaddr + SA5_SCRATCHPAD_OFFSET);
7074 if (wait_for_ready) {
7075 if (scratchpad == HPSA_FIRMWARE_READY)
7078 if (scratchpad != HPSA_FIRMWARE_READY)
7081 msleep(HPSA_BOARD_READY_POLL_INTERVAL_MSECS);
7083 dev_warn(&pdev->dev, "board not ready, timed out.\n");
7087 static int hpsa_find_cfg_addrs(struct pci_dev *pdev, void __iomem *vaddr,
7088 u32 *cfg_base_addr, u64 *cfg_base_addr_index,
7091 *cfg_base_addr = readl(vaddr + SA5_CTCFG_OFFSET);
7092 *cfg_offset = readl(vaddr + SA5_CTMEM_OFFSET);
7093 *cfg_base_addr &= (u32) 0x0000ffff;
7094 *cfg_base_addr_index = find_PCI_BAR_index(pdev, *cfg_base_addr);
7095 if (*cfg_base_addr_index == -1) {
7096 dev_warn(&pdev->dev, "cannot find cfg_base_addr_index\n");
7102 static void hpsa_free_cfgtables(struct ctlr_info *h)
7104 if (h->transtable) {
7105 iounmap(h->transtable);
7106 h->transtable = NULL;
7109 iounmap(h->cfgtable);
7114 /* Find and map CISS config table and transfer table
7115 + * several items must be unmapped (freed) later
7117 static int hpsa_find_cfgtables(struct ctlr_info *h)
7121 u64 cfg_base_addr_index;
7125 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
7126 &cfg_base_addr_index, &cfg_offset);
7129 h->cfgtable = remap_pci_mem(pci_resource_start(h->pdev,
7130 cfg_base_addr_index) + cfg_offset, sizeof(*h->cfgtable));
7132 dev_err(&h->pdev->dev, "Failed mapping cfgtable\n");
7135 rc = write_driver_ver_to_cfgtable(h->cfgtable);
7138 /* Find performant mode table. */
7139 trans_offset = readl(&h->cfgtable->TransMethodOffset);
7140 h->transtable = remap_pci_mem(pci_resource_start(h->pdev,
7141 cfg_base_addr_index)+cfg_offset+trans_offset,
7142 sizeof(*h->transtable));
7143 if (!h->transtable) {
7144 dev_err(&h->pdev->dev, "Failed mapping transfer table\n");
7145 hpsa_free_cfgtables(h);
7151 static void hpsa_get_max_perf_mode_cmds(struct ctlr_info *h)
7153 #define MIN_MAX_COMMANDS 16
7154 BUILD_BUG_ON(MIN_MAX_COMMANDS <= HPSA_NRESERVED_CMDS);
7156 h->max_commands = readl(&h->cfgtable->MaxPerformantModeCommands);
7158 /* Limit commands in memory limited kdump scenario. */
7159 if (reset_devices && h->max_commands > 32)
7160 h->max_commands = 32;
7162 if (h->max_commands < MIN_MAX_COMMANDS) {
7163 dev_warn(&h->pdev->dev,
7164 "Controller reports max supported commands of %d Using %d instead. Ensure that firmware is up to date.\n",
7167 h->max_commands = MIN_MAX_COMMANDS;
7171 /* If the controller reports that the total max sg entries is greater than 512,
7172 * then we know that chained SG blocks work. (Original smart arrays did not
7173 * support chained SG blocks and would return zero for max sg entries.)
7175 static int hpsa_supports_chained_sg_blocks(struct ctlr_info *h)
7177 return h->maxsgentries > 512;
7180 /* Interrogate the hardware for some limits:
7181 * max commands, max SG elements without chaining, and with chaining,
7182 * SG chain block size, etc.
7184 static void hpsa_find_board_params(struct ctlr_info *h)
7186 hpsa_get_max_perf_mode_cmds(h);
7187 h->nr_cmds = h->max_commands;
7188 h->maxsgentries = readl(&(h->cfgtable->MaxScatterGatherElements));
7189 h->fw_support = readl(&(h->cfgtable->misc_fw_support));
7190 if (hpsa_supports_chained_sg_blocks(h)) {
7191 /* Limit in-command s/g elements to 32 save dma'able memory. */
7192 h->max_cmd_sg_entries = 32;
7193 h->chainsize = h->maxsgentries - h->max_cmd_sg_entries;
7194 h->maxsgentries--; /* save one for chain pointer */
7197 * Original smart arrays supported at most 31 s/g entries
7198 * embedded inline in the command (trying to use more
7199 * would lock up the controller)
7201 h->max_cmd_sg_entries = 31;
7202 h->maxsgentries = 31; /* default to traditional values */
7206 /* Find out what task management functions are supported and cache */
7207 h->TMFSupportFlags = readl(&(h->cfgtable->TMFSupportFlags));
7208 if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags))
7209 dev_warn(&h->pdev->dev, "Physical aborts not supported\n");
7210 if (!(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags))
7211 dev_warn(&h->pdev->dev, "Logical aborts not supported\n");
7212 if (!(HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags))
7213 dev_warn(&h->pdev->dev, "HP SSD Smart Path aborts not supported\n");
7216 static inline bool hpsa_CISS_signature_present(struct ctlr_info *h)
7218 if (!check_signature(h->cfgtable->Signature, "CISS", 4)) {
7219 dev_err(&h->pdev->dev, "not a valid CISS config table\n");
7225 static inline void hpsa_set_driver_support_bits(struct ctlr_info *h)
7229 driver_support = readl(&(h->cfgtable->driver_support));
7230 /* Need to enable prefetch in the SCSI core for 6400 in x86 */
7232 driver_support |= ENABLE_SCSI_PREFETCH;
7234 driver_support |= ENABLE_UNIT_ATTN;
7235 writel(driver_support, &(h->cfgtable->driver_support));
7238 /* Disable DMA prefetch for the P600. Otherwise an ASIC bug may result
7239 * in a prefetch beyond physical memory.
7241 static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h)
7245 if (h->board_id != 0x3225103C)
7247 dma_prefetch = readl(h->vaddr + I2O_DMA1_CFG);
7248 dma_prefetch |= 0x8000;
7249 writel(dma_prefetch, h->vaddr + I2O_DMA1_CFG);
7252 static int hpsa_wait_for_clear_event_notify_ack(struct ctlr_info *h)
7256 unsigned long flags;
7257 /* wait until the clear_event_notify bit 6 is cleared by controller. */
7258 for (i = 0; i < MAX_CLEAR_EVENT_WAIT; i++) {
7259 spin_lock_irqsave(&h->lock, flags);
7260 doorbell_value = readl(h->vaddr + SA5_DOORBELL);
7261 spin_unlock_irqrestore(&h->lock, flags);
7262 if (!(doorbell_value & DOORBELL_CLEAR_EVENTS))
7264 /* delay and try again */
7265 msleep(CLEAR_EVENT_WAIT_INTERVAL);
7272 static int hpsa_wait_for_mode_change_ack(struct ctlr_info *h)
7276 unsigned long flags;
7278 /* under certain very rare conditions, this can take awhile.
7279 * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right
7280 * as we enter this code.)
7282 for (i = 0; i < MAX_MODE_CHANGE_WAIT; i++) {
7283 if (h->remove_in_progress)
7285 spin_lock_irqsave(&h->lock, flags);
7286 doorbell_value = readl(h->vaddr + SA5_DOORBELL);
7287 spin_unlock_irqrestore(&h->lock, flags);
7288 if (!(doorbell_value & CFGTBL_ChangeReq))
7290 /* delay and try again */
7291 msleep(MODE_CHANGE_WAIT_INTERVAL);
7298 /* return -ENODEV or other reason on error, 0 on success */
7299 static int hpsa_enter_simple_mode(struct ctlr_info *h)
7303 trans_support = readl(&(h->cfgtable->TransportSupport));
7304 if (!(trans_support & SIMPLE_MODE))
7307 h->max_commands = readl(&(h->cfgtable->CmdsOutMax));
7309 /* Update the field, and then ring the doorbell */
7310 writel(CFGTBL_Trans_Simple, &(h->cfgtable->HostWrite.TransportRequest));
7311 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
7312 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
7313 if (hpsa_wait_for_mode_change_ack(h))
7315 print_cfg_table(&h->pdev->dev, h->cfgtable);
7316 if (!(readl(&(h->cfgtable->TransportActive)) & CFGTBL_Trans_Simple))
7318 h->transMethod = CFGTBL_Trans_Simple;
7321 dev_err(&h->pdev->dev, "failed to enter simple mode\n");
7325 /* free items allocated or mapped by hpsa_pci_init */
7326 static void hpsa_free_pci_init(struct ctlr_info *h)
7328 hpsa_free_cfgtables(h); /* pci_init 4 */
7329 iounmap(h->vaddr); /* pci_init 3 */
7331 hpsa_disable_interrupt_mode(h); /* pci_init 2 */
7333 * call pci_disable_device before pci_release_regions per
7334 * Documentation/PCI/pci.txt
7336 pci_disable_device(h->pdev); /* pci_init 1 */
7337 pci_release_regions(h->pdev); /* pci_init 2 */
7340 /* several items must be freed later */
7341 static int hpsa_pci_init(struct ctlr_info *h)
7343 int prod_index, err;
7345 prod_index = hpsa_lookup_board_id(h->pdev, &h->board_id);
7348 h->product_name = products[prod_index].product_name;
7349 h->access = *(products[prod_index].access);
7351 h->needs_abort_tags_swizzled =
7352 ctlr_needs_abort_tags_swizzled(h->board_id);
7354 pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S |
7355 PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM);
7357 err = pci_enable_device(h->pdev);
7359 dev_err(&h->pdev->dev, "failed to enable PCI device\n");
7360 pci_disable_device(h->pdev);
7364 err = pci_request_regions(h->pdev, HPSA);
7366 dev_err(&h->pdev->dev,
7367 "failed to obtain PCI resources\n");
7368 pci_disable_device(h->pdev);
7372 pci_set_master(h->pdev);
7374 hpsa_interrupt_mode(h);
7375 err = hpsa_pci_find_memory_BAR(h->pdev, &h->paddr);
7377 goto clean2; /* intmode+region, pci */
7378 h->vaddr = remap_pci_mem(h->paddr, 0x250);
7380 dev_err(&h->pdev->dev, "failed to remap PCI mem\n");
7382 goto clean2; /* intmode+region, pci */
7384 err = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
7386 goto clean3; /* vaddr, intmode+region, pci */
7387 err = hpsa_find_cfgtables(h);
7389 goto clean3; /* vaddr, intmode+region, pci */
7390 hpsa_find_board_params(h);
7392 if (!hpsa_CISS_signature_present(h)) {
7394 goto clean4; /* cfgtables, vaddr, intmode+region, pci */
7396 hpsa_set_driver_support_bits(h);
7397 hpsa_p600_dma_prefetch_quirk(h);
7398 err = hpsa_enter_simple_mode(h);
7400 goto clean4; /* cfgtables, vaddr, intmode+region, pci */
7403 clean4: /* cfgtables, vaddr, intmode+region, pci */
7404 hpsa_free_cfgtables(h);
7405 clean3: /* vaddr, intmode+region, pci */
7408 clean2: /* intmode+region, pci */
7409 hpsa_disable_interrupt_mode(h);
7411 * call pci_disable_device before pci_release_regions per
7412 * Documentation/PCI/pci.txt
7414 pci_disable_device(h->pdev);
7415 pci_release_regions(h->pdev);
7419 static void hpsa_hba_inquiry(struct ctlr_info *h)
7423 #define HBA_INQUIRY_BYTE_COUNT 64
7424 h->hba_inquiry_data = kmalloc(HBA_INQUIRY_BYTE_COUNT, GFP_KERNEL);
7425 if (!h->hba_inquiry_data)
7427 rc = hpsa_scsi_do_inquiry(h, RAID_CTLR_LUNID, 0,
7428 h->hba_inquiry_data, HBA_INQUIRY_BYTE_COUNT);
7430 kfree(h->hba_inquiry_data);
7431 h->hba_inquiry_data = NULL;
7435 static int hpsa_init_reset_devices(struct pci_dev *pdev, u32 board_id)
7438 void __iomem *vaddr;
7443 /* kdump kernel is loading, we don't know in which state is
7444 * the pci interface. The dev->enable_cnt is equal zero
7445 * so we call enable+disable, wait a while and switch it on.
7447 rc = pci_enable_device(pdev);
7449 dev_warn(&pdev->dev, "Failed to enable PCI device\n");
7452 pci_disable_device(pdev);
7453 msleep(260); /* a randomly chosen number */
7454 rc = pci_enable_device(pdev);
7456 dev_warn(&pdev->dev, "failed to enable device.\n");
7460 pci_set_master(pdev);
7462 vaddr = pci_ioremap_bar(pdev, 0);
7463 if (vaddr == NULL) {
7467 writel(SA5_INTR_OFF, vaddr + SA5_REPLY_INTR_MASK_OFFSET);
7470 /* Reset the controller with a PCI power-cycle or via doorbell */
7471 rc = hpsa_kdump_hard_reset_controller(pdev, board_id);
7473 /* -ENOTSUPP here means we cannot reset the controller
7474 * but it's already (and still) up and running in
7475 * "performant mode". Or, it might be 640x, which can't reset
7476 * due to concerns about shared bbwc between 6402/6404 pair.
7481 /* Now try to get the controller to respond to a no-op */
7482 dev_info(&pdev->dev, "Waiting for controller to respond to no-op\n");
7483 for (i = 0; i < HPSA_POST_RESET_NOOP_RETRIES; i++) {
7484 if (hpsa_noop(pdev) == 0)
7487 dev_warn(&pdev->dev, "no-op failed%s\n",
7488 (i < 11 ? "; re-trying" : ""));
7493 pci_disable_device(pdev);
7497 static void hpsa_free_cmd_pool(struct ctlr_info *h)
7499 kfree(h->cmd_pool_bits);
7500 h->cmd_pool_bits = NULL;
7502 pci_free_consistent(h->pdev,
7503 h->nr_cmds * sizeof(struct CommandList),
7505 h->cmd_pool_dhandle);
7507 h->cmd_pool_dhandle = 0;
7509 if (h->errinfo_pool) {
7510 pci_free_consistent(h->pdev,
7511 h->nr_cmds * sizeof(struct ErrorInfo),
7513 h->errinfo_pool_dhandle);
7514 h->errinfo_pool = NULL;
7515 h->errinfo_pool_dhandle = 0;
7519 static int hpsa_alloc_cmd_pool(struct ctlr_info *h)
7521 h->cmd_pool_bits = kzalloc(
7522 DIV_ROUND_UP(h->nr_cmds, BITS_PER_LONG) *
7523 sizeof(unsigned long), GFP_KERNEL);
7524 h->cmd_pool = pci_alloc_consistent(h->pdev,
7525 h->nr_cmds * sizeof(*h->cmd_pool),
7526 &(h->cmd_pool_dhandle));
7527 h->errinfo_pool = pci_alloc_consistent(h->pdev,
7528 h->nr_cmds * sizeof(*h->errinfo_pool),
7529 &(h->errinfo_pool_dhandle));
7530 if ((h->cmd_pool_bits == NULL)
7531 || (h->cmd_pool == NULL)
7532 || (h->errinfo_pool == NULL)) {
7533 dev_err(&h->pdev->dev, "out of memory in %s", __func__);
7536 hpsa_preinitialize_commands(h);
7539 hpsa_free_cmd_pool(h);
7543 static void hpsa_irq_affinity_hints(struct ctlr_info *h)
7547 cpu = cpumask_first(cpu_online_mask);
7548 for (i = 0; i < h->msix_vector; i++) {
7549 irq_set_affinity_hint(h->intr[i], get_cpu_mask(cpu));
7550 cpu = cpumask_next(cpu, cpu_online_mask);
7554 /* clear affinity hints and free MSI-X, MSI, or legacy INTx vectors */
7555 static void hpsa_free_irqs(struct ctlr_info *h)
7559 if (!h->msix_vector || h->intr_mode != PERF_MODE_INT) {
7560 /* Single reply queue, only one irq to free */
7562 irq_set_affinity_hint(h->intr[i], NULL);
7563 free_irq(h->intr[i], &h->q[i]);
7568 for (i = 0; i < h->msix_vector; i++) {
7569 irq_set_affinity_hint(h->intr[i], NULL);
7570 free_irq(h->intr[i], &h->q[i]);
7573 for (; i < MAX_REPLY_QUEUES; i++)
7577 /* returns 0 on success; cleans up and returns -Enn on error */
7578 static int hpsa_request_irqs(struct ctlr_info *h,
7579 irqreturn_t (*msixhandler)(int, void *),
7580 irqreturn_t (*intxhandler)(int, void *))
7585 * initialize h->q[x] = x so that interrupt handlers know which
7588 for (i = 0; i < MAX_REPLY_QUEUES; i++)
7591 if (h->intr_mode == PERF_MODE_INT && h->msix_vector > 0) {
7592 /* If performant mode and MSI-X, use multiple reply queues */
7593 for (i = 0; i < h->msix_vector; i++) {
7594 sprintf(h->intrname[i], "%s-msix%d", h->devname, i);
7595 rc = request_irq(h->intr[i], msixhandler,
7601 dev_err(&h->pdev->dev,
7602 "failed to get irq %d for %s\n",
7603 h->intr[i], h->devname);
7604 for (j = 0; j < i; j++) {
7605 free_irq(h->intr[j], &h->q[j]);
7608 for (; j < MAX_REPLY_QUEUES; j++)
7613 hpsa_irq_affinity_hints(h);
7615 /* Use single reply pool */
7616 if (h->msix_vector > 0 || h->msi_vector) {
7618 sprintf(h->intrname[h->intr_mode],
7619 "%s-msix", h->devname);
7621 sprintf(h->intrname[h->intr_mode],
7622 "%s-msi", h->devname);
7623 rc = request_irq(h->intr[h->intr_mode],
7625 h->intrname[h->intr_mode],
7626 &h->q[h->intr_mode]);
7628 sprintf(h->intrname[h->intr_mode],
7629 "%s-intx", h->devname);
7630 rc = request_irq(h->intr[h->intr_mode],
7631 intxhandler, IRQF_SHARED,
7632 h->intrname[h->intr_mode],
7633 &h->q[h->intr_mode]);
7635 irq_set_affinity_hint(h->intr[h->intr_mode], NULL);
7638 dev_err(&h->pdev->dev, "failed to get irq %d for %s\n",
7639 h->intr[h->intr_mode], h->devname);
7646 static int hpsa_kdump_soft_reset(struct ctlr_info *h)
7649 hpsa_send_host_reset(h, RAID_CTLR_LUNID, HPSA_RESET_TYPE_CONTROLLER);
7651 dev_info(&h->pdev->dev, "Waiting for board to soft reset.\n");
7652 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_NOT_READY);
7654 dev_warn(&h->pdev->dev, "Soft reset had no effect.\n");
7658 dev_info(&h->pdev->dev, "Board reset, awaiting READY status.\n");
7659 rc = hpsa_wait_for_board_state(h->pdev, h->vaddr, BOARD_READY);
7661 dev_warn(&h->pdev->dev, "Board failed to become ready "
7662 "after soft reset.\n");
7669 static void hpsa_free_reply_queues(struct ctlr_info *h)
7673 for (i = 0; i < h->nreply_queues; i++) {
7674 if (!h->reply_queue[i].head)
7676 pci_free_consistent(h->pdev,
7677 h->reply_queue_size,
7678 h->reply_queue[i].head,
7679 h->reply_queue[i].busaddr);
7680 h->reply_queue[i].head = NULL;
7681 h->reply_queue[i].busaddr = 0;
7683 h->reply_queue_size = 0;
7686 static void hpsa_undo_allocations_after_kdump_soft_reset(struct ctlr_info *h)
7688 hpsa_free_performant_mode(h); /* init_one 7 */
7689 hpsa_free_sg_chain_blocks(h); /* init_one 6 */
7690 hpsa_free_cmd_pool(h); /* init_one 5 */
7691 hpsa_free_irqs(h); /* init_one 4 */
7692 scsi_host_put(h->scsi_host); /* init_one 3 */
7693 h->scsi_host = NULL; /* init_one 3 */
7694 hpsa_free_pci_init(h); /* init_one 2_5 */
7695 free_percpu(h->lockup_detected); /* init_one 2 */
7696 h->lockup_detected = NULL; /* init_one 2 */
7697 if (h->resubmit_wq) {
7698 destroy_workqueue(h->resubmit_wq); /* init_one 1 */
7699 h->resubmit_wq = NULL;
7701 if (h->rescan_ctlr_wq) {
7702 destroy_workqueue(h->rescan_ctlr_wq);
7703 h->rescan_ctlr_wq = NULL;
7705 kfree(h); /* init_one 1 */
7708 /* Called when controller lockup detected. */
7709 static void fail_all_outstanding_cmds(struct ctlr_info *h)
7712 struct CommandList *c;
7715 flush_workqueue(h->resubmit_wq); /* ensure all cmds are fully built */
7716 for (i = 0; i < h->nr_cmds; i++) {
7717 c = h->cmd_pool + i;
7718 refcount = atomic_inc_return(&c->refcount);
7720 c->err_info->CommandStatus = CMD_CTLR_LOCKUP;
7722 atomic_dec(&h->commands_outstanding);
7727 dev_warn(&h->pdev->dev,
7728 "failed %d commands in fail_all\n", failcount);
7731 static void set_lockup_detected_for_all_cpus(struct ctlr_info *h, u32 value)
7735 for_each_online_cpu(cpu) {
7736 u32 *lockup_detected;
7737 lockup_detected = per_cpu_ptr(h->lockup_detected, cpu);
7738 *lockup_detected = value;
7740 wmb(); /* be sure the per-cpu variables are out to memory */
7743 static void controller_lockup_detected(struct ctlr_info *h)
7745 unsigned long flags;
7746 u32 lockup_detected;
7748 h->access.set_intr_mask(h, HPSA_INTR_OFF);
7749 spin_lock_irqsave(&h->lock, flags);
7750 lockup_detected = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
7751 if (!lockup_detected) {
7752 /* no heartbeat, but controller gave us a zero. */
7753 dev_warn(&h->pdev->dev,
7754 "lockup detected after %d but scratchpad register is zero\n",
7755 h->heartbeat_sample_interval / HZ);
7756 lockup_detected = 0xffffffff;
7758 set_lockup_detected_for_all_cpus(h, lockup_detected);
7759 spin_unlock_irqrestore(&h->lock, flags);
7760 dev_warn(&h->pdev->dev, "Controller lockup detected: 0x%08x after %d\n",
7761 lockup_detected, h->heartbeat_sample_interval / HZ);
7762 pci_disable_device(h->pdev);
7763 fail_all_outstanding_cmds(h);
7766 static int detect_controller_lockup(struct ctlr_info *h)
7770 unsigned long flags;
7772 now = get_jiffies_64();
7773 /* If we've received an interrupt recently, we're ok. */
7774 if (time_after64(h->last_intr_timestamp +
7775 (h->heartbeat_sample_interval), now))
7779 * If we've already checked the heartbeat recently, we're ok.
7780 * This could happen if someone sends us a signal. We
7781 * otherwise don't care about signals in this thread.
7783 if (time_after64(h->last_heartbeat_timestamp +
7784 (h->heartbeat_sample_interval), now))
7787 /* If heartbeat has not changed since we last looked, we're not ok. */
7788 spin_lock_irqsave(&h->lock, flags);
7789 heartbeat = readl(&h->cfgtable->HeartBeat);
7790 spin_unlock_irqrestore(&h->lock, flags);
7791 if (h->last_heartbeat == heartbeat) {
7792 controller_lockup_detected(h);
7797 h->last_heartbeat = heartbeat;
7798 h->last_heartbeat_timestamp = now;
7802 static void hpsa_ack_ctlr_events(struct ctlr_info *h)
7807 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
7810 /* Ask the controller to clear the events we're handling. */
7811 if ((h->transMethod & (CFGTBL_Trans_io_accel1
7812 | CFGTBL_Trans_io_accel2)) &&
7813 (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE ||
7814 h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)) {
7816 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_STATE_CHANGE)
7817 event_type = "state change";
7818 if (h->events & HPSA_EVENT_NOTIFY_ACCEL_IO_PATH_CONFIG_CHANGE)
7819 event_type = "configuration change";
7820 /* Stop sending new RAID offload reqs via the IO accelerator */
7821 scsi_block_requests(h->scsi_host);
7822 for (i = 0; i < h->ndevices; i++)
7823 h->dev[i]->offload_enabled = 0;
7824 hpsa_drain_accel_commands(h);
7825 /* Set 'accelerator path config change' bit */
7826 dev_warn(&h->pdev->dev,
7827 "Acknowledging event: 0x%08x (HP SSD Smart Path %s)\n",
7828 h->events, event_type);
7829 writel(h->events, &(h->cfgtable->clear_event_notify));
7830 /* Set the "clear event notify field update" bit 6 */
7831 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
7832 /* Wait until ctlr clears 'clear event notify field', bit 6 */
7833 hpsa_wait_for_clear_event_notify_ack(h);
7834 scsi_unblock_requests(h->scsi_host);
7836 /* Acknowledge controller notification events. */
7837 writel(h->events, &(h->cfgtable->clear_event_notify));
7838 writel(DOORBELL_CLEAR_EVENTS, h->vaddr + SA5_DOORBELL);
7839 hpsa_wait_for_clear_event_notify_ack(h);
7841 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
7842 hpsa_wait_for_mode_change_ack(h);
7848 /* Check a register on the controller to see if there are configuration
7849 * changes (added/changed/removed logical drives, etc.) which mean that
7850 * we should rescan the controller for devices.
7851 * Also check flag for driver-initiated rescan.
7853 static int hpsa_ctlr_needs_rescan(struct ctlr_info *h)
7855 if (!(h->fw_support & MISC_FW_EVENT_NOTIFY))
7858 h->events = readl(&(h->cfgtable->event_notify));
7859 return h->events & RESCAN_REQUIRED_EVENT_BITS;
7863 * Check if any of the offline devices have become ready
7865 static int hpsa_offline_devices_ready(struct ctlr_info *h)
7867 unsigned long flags;
7868 struct offline_device_entry *d;
7869 struct list_head *this, *tmp;
7871 spin_lock_irqsave(&h->offline_device_lock, flags);
7872 list_for_each_safe(this, tmp, &h->offline_device_list) {
7873 d = list_entry(this, struct offline_device_entry,
7875 spin_unlock_irqrestore(&h->offline_device_lock, flags);
7876 if (!hpsa_volume_offline(h, d->scsi3addr)) {
7877 spin_lock_irqsave(&h->offline_device_lock, flags);
7878 list_del(&d->offline_list);
7879 spin_unlock_irqrestore(&h->offline_device_lock, flags);
7882 spin_lock_irqsave(&h->offline_device_lock, flags);
7884 spin_unlock_irqrestore(&h->offline_device_lock, flags);
7888 static void hpsa_rescan_ctlr_worker(struct work_struct *work)
7890 unsigned long flags;
7891 struct ctlr_info *h = container_of(to_delayed_work(work),
7892 struct ctlr_info, rescan_ctlr_work);
7895 if (h->remove_in_progress)
7898 if (hpsa_ctlr_needs_rescan(h) || hpsa_offline_devices_ready(h)) {
7899 scsi_host_get(h->scsi_host);
7900 hpsa_ack_ctlr_events(h);
7901 hpsa_scan_start(h->scsi_host);
7902 scsi_host_put(h->scsi_host);
7904 spin_lock_irqsave(&h->lock, flags);
7905 if (!h->remove_in_progress)
7906 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
7907 h->heartbeat_sample_interval);
7908 spin_unlock_irqrestore(&h->lock, flags);
7911 static void hpsa_monitor_ctlr_worker(struct work_struct *work)
7913 unsigned long flags;
7914 struct ctlr_info *h = container_of(to_delayed_work(work),
7915 struct ctlr_info, monitor_ctlr_work);
7917 detect_controller_lockup(h);
7918 if (lockup_detected(h))
7921 spin_lock_irqsave(&h->lock, flags);
7922 if (!h->remove_in_progress)
7923 schedule_delayed_work(&h->monitor_ctlr_work,
7924 h->heartbeat_sample_interval);
7925 spin_unlock_irqrestore(&h->lock, flags);
7928 static struct workqueue_struct *hpsa_create_controller_wq(struct ctlr_info *h,
7931 struct workqueue_struct *wq = NULL;
7933 wq = alloc_ordered_workqueue("%s_%d_hpsa", 0, name, h->ctlr);
7935 dev_err(&h->pdev->dev, "failed to create %s workqueue\n", name);
7940 static int hpsa_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
7943 struct ctlr_info *h;
7944 int try_soft_reset = 0;
7945 unsigned long flags;
7948 if (number_of_controllers == 0)
7949 printk(KERN_INFO DRIVER_NAME "\n");
7951 rc = hpsa_lookup_board_id(pdev, &board_id);
7953 dev_warn(&pdev->dev, "Board ID not found\n");
7957 rc = hpsa_init_reset_devices(pdev, board_id);
7959 if (rc != -ENOTSUPP)
7961 /* If the reset fails in a particular way (it has no way to do
7962 * a proper hard reset, so returns -ENOTSUPP) we can try to do
7963 * a soft reset once we get the controller configured up to the
7964 * point that it can accept a command.
7970 reinit_after_soft_reset:
7972 /* Command structures must be aligned on a 32-byte boundary because
7973 * the 5 lower bits of the address are used by the hardware. and by
7974 * the driver. See comments in hpsa.h for more info.
7976 BUILD_BUG_ON(sizeof(struct CommandList) % COMMANDLIST_ALIGNMENT);
7977 h = kzalloc(sizeof(*h), GFP_KERNEL);
7979 dev_err(&pdev->dev, "Failed to allocate controller head\n");
7985 h->intr_mode = hpsa_simple_mode ? SIMPLE_MODE_INT : PERF_MODE_INT;
7986 INIT_LIST_HEAD(&h->offline_device_list);
7987 spin_lock_init(&h->lock);
7988 spin_lock_init(&h->offline_device_lock);
7989 spin_lock_init(&h->scan_lock);
7990 atomic_set(&h->passthru_cmds_avail, HPSA_MAX_CONCURRENT_PASSTHRUS);
7991 atomic_set(&h->abort_cmds_available, HPSA_CMDS_RESERVED_FOR_ABORTS);
7993 /* Allocate and clear per-cpu variable lockup_detected */
7994 h->lockup_detected = alloc_percpu(u32);
7995 if (!h->lockup_detected) {
7996 dev_err(&h->pdev->dev, "Failed to allocate lockup detector\n");
7998 goto clean1; /* aer/h */
8000 set_lockup_detected_for_all_cpus(h, 0);
8002 rc = hpsa_pci_init(h);
8004 goto clean2; /* lu, aer/h */
8006 /* relies on h-> settings made by hpsa_pci_init, including
8007 * interrupt_mode h->intr */
8008 rc = hpsa_scsi_host_alloc(h);
8010 goto clean2_5; /* pci, lu, aer/h */
8012 sprintf(h->devname, HPSA "%d", h->scsi_host->host_no);
8013 h->ctlr = number_of_controllers;
8014 number_of_controllers++;
8016 /* configure PCI DMA stuff */
8017 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
8021 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
8025 dev_err(&pdev->dev, "no suitable DMA available\n");
8026 goto clean3; /* shost, pci, lu, aer/h */
8030 /* make sure the board interrupts are off */
8031 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8033 rc = hpsa_request_irqs(h, do_hpsa_intr_msi, do_hpsa_intr_intx);
8035 goto clean3; /* shost, pci, lu, aer/h */
8036 rc = hpsa_alloc_cmd_pool(h);
8038 goto clean4; /* irq, shost, pci, lu, aer/h */
8039 rc = hpsa_alloc_sg_chain_blocks(h);
8041 goto clean5; /* cmd, irq, shost, pci, lu, aer/h */
8042 init_waitqueue_head(&h->scan_wait_queue);
8043 init_waitqueue_head(&h->abort_cmd_wait_queue);
8044 init_waitqueue_head(&h->event_sync_wait_queue);
8045 mutex_init(&h->reset_mutex);
8046 h->scan_finished = 1; /* no scan currently in progress */
8048 pci_set_drvdata(pdev, h);
8051 spin_lock_init(&h->devlock);
8052 rc = hpsa_put_ctlr_into_performant_mode(h);
8054 goto clean6; /* sg, cmd, irq, shost, pci, lu, aer/h */
8056 /* hook into SCSI subsystem */
8057 rc = hpsa_scsi_add_host(h);
8059 goto clean7; /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
8061 /* create the resubmit workqueue */
8062 h->rescan_ctlr_wq = hpsa_create_controller_wq(h, "rescan");
8063 if (!h->rescan_ctlr_wq) {
8068 h->resubmit_wq = hpsa_create_controller_wq(h, "resubmit");
8069 if (!h->resubmit_wq) {
8071 goto clean7; /* aer/h */
8075 * At this point, the controller is ready to take commands.
8076 * Now, if reset_devices and the hard reset didn't work, try
8077 * the soft reset and see if that works.
8079 if (try_soft_reset) {
8081 /* This is kind of gross. We may or may not get a completion
8082 * from the soft reset command, and if we do, then the value
8083 * from the fifo may or may not be valid. So, we wait 10 secs
8084 * after the reset throwing away any completions we get during
8085 * that time. Unregister the interrupt handler and register
8086 * fake ones to scoop up any residual completions.
8088 spin_lock_irqsave(&h->lock, flags);
8089 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8090 spin_unlock_irqrestore(&h->lock, flags);
8092 rc = hpsa_request_irqs(h, hpsa_msix_discard_completions,
8093 hpsa_intx_discard_completions);
8095 dev_warn(&h->pdev->dev,
8096 "Failed to request_irq after soft reset.\n");
8098 * cannot goto clean7 or free_irqs will be called
8099 * again. Instead, do its work
8101 hpsa_free_performant_mode(h); /* clean7 */
8102 hpsa_free_sg_chain_blocks(h); /* clean6 */
8103 hpsa_free_cmd_pool(h); /* clean5 */
8105 * skip hpsa_free_irqs(h) clean4 since that
8106 * was just called before request_irqs failed
8111 rc = hpsa_kdump_soft_reset(h);
8113 /* Neither hard nor soft reset worked, we're hosed. */
8116 dev_info(&h->pdev->dev, "Board READY.\n");
8117 dev_info(&h->pdev->dev,
8118 "Waiting for stale completions to drain.\n");
8119 h->access.set_intr_mask(h, HPSA_INTR_ON);
8121 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8123 rc = controller_reset_failed(h->cfgtable);
8125 dev_info(&h->pdev->dev,
8126 "Soft reset appears to have failed.\n");
8128 /* since the controller's reset, we have to go back and re-init
8129 * everything. Easiest to just forget what we've done and do it
8132 hpsa_undo_allocations_after_kdump_soft_reset(h);
8135 /* don't goto clean, we already unallocated */
8138 goto reinit_after_soft_reset;
8141 /* Enable Accelerated IO path at driver layer */
8142 h->acciopath_status = 1;
8145 /* Turn the interrupts on so we can service requests */
8146 h->access.set_intr_mask(h, HPSA_INTR_ON);
8148 hpsa_hba_inquiry(h);
8150 /* Monitor the controller for firmware lockups */
8151 h->heartbeat_sample_interval = HEARTBEAT_SAMPLE_INTERVAL;
8152 INIT_DELAYED_WORK(&h->monitor_ctlr_work, hpsa_monitor_ctlr_worker);
8153 schedule_delayed_work(&h->monitor_ctlr_work,
8154 h->heartbeat_sample_interval);
8155 INIT_DELAYED_WORK(&h->rescan_ctlr_work, hpsa_rescan_ctlr_worker);
8156 queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work,
8157 h->heartbeat_sample_interval);
8160 clean7: /* perf, sg, cmd, irq, shost, pci, lu, aer/h */
8161 hpsa_free_performant_mode(h);
8162 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8163 clean6: /* sg, cmd, irq, pci, lockup, wq/aer/h */
8164 hpsa_free_sg_chain_blocks(h);
8165 clean5: /* cmd, irq, shost, pci, lu, aer/h */
8166 hpsa_free_cmd_pool(h);
8167 clean4: /* irq, shost, pci, lu, aer/h */
8169 clean3: /* shost, pci, lu, aer/h */
8170 scsi_host_put(h->scsi_host);
8171 h->scsi_host = NULL;
8172 clean2_5: /* pci, lu, aer/h */
8173 hpsa_free_pci_init(h);
8174 clean2: /* lu, aer/h */
8175 if (h->lockup_detected) {
8176 free_percpu(h->lockup_detected);
8177 h->lockup_detected = NULL;
8179 clean1: /* wq/aer/h */
8180 if (h->resubmit_wq) {
8181 destroy_workqueue(h->resubmit_wq);
8182 h->resubmit_wq = NULL;
8184 if (h->rescan_ctlr_wq) {
8185 destroy_workqueue(h->rescan_ctlr_wq);
8186 h->rescan_ctlr_wq = NULL;
8192 static void hpsa_flush_cache(struct ctlr_info *h)
8195 struct CommandList *c;
8198 if (unlikely(lockup_detected(h)))
8200 flush_buf = kzalloc(4, GFP_KERNEL);
8206 if (fill_cmd(c, HPSA_CACHE_FLUSH, h, flush_buf, 4, 0,
8207 RAID_CTLR_LUNID, TYPE_CMD)) {
8210 rc = hpsa_scsi_do_simple_cmd_with_retry(h, c,
8211 PCI_DMA_TODEVICE, NO_TIMEOUT);
8214 if (c->err_info->CommandStatus != 0)
8216 dev_warn(&h->pdev->dev,
8217 "error flushing cache on controller\n");
8222 static void hpsa_shutdown(struct pci_dev *pdev)
8224 struct ctlr_info *h;
8226 h = pci_get_drvdata(pdev);
8227 /* Turn board interrupts off and send the flush cache command
8228 * sendcmd will turn off interrupt, and send the flush...
8229 * To write all data in the battery backed cache to disks
8231 hpsa_flush_cache(h);
8232 h->access.set_intr_mask(h, HPSA_INTR_OFF);
8233 hpsa_free_irqs(h); /* init_one 4 */
8234 hpsa_disable_interrupt_mode(h); /* pci_init 2 */
8237 static void hpsa_free_device_info(struct ctlr_info *h)
8241 for (i = 0; i < h->ndevices; i++) {
8247 static void hpsa_remove_one(struct pci_dev *pdev)
8249 struct ctlr_info *h;
8250 unsigned long flags;
8252 if (pci_get_drvdata(pdev) == NULL) {
8253 dev_err(&pdev->dev, "unable to remove device\n");
8256 h = pci_get_drvdata(pdev);
8258 /* Get rid of any controller monitoring work items */
8259 spin_lock_irqsave(&h->lock, flags);
8260 h->remove_in_progress = 1;
8261 spin_unlock_irqrestore(&h->lock, flags);
8262 cancel_delayed_work_sync(&h->monitor_ctlr_work);
8263 cancel_delayed_work_sync(&h->rescan_ctlr_work);
8264 destroy_workqueue(h->rescan_ctlr_wq);
8265 destroy_workqueue(h->resubmit_wq);
8268 * Call before disabling interrupts.
8269 * scsi_remove_host can trigger I/O operations especially
8270 * when multipath is enabled. There can be SYNCHRONIZE CACHE
8271 * operations which cannot complete and will hang the system.
8274 scsi_remove_host(h->scsi_host); /* init_one 8 */
8275 /* includes hpsa_free_irqs - init_one 4 */
8276 /* includes hpsa_disable_interrupt_mode - pci_init 2 */
8277 hpsa_shutdown(pdev);
8279 hpsa_free_device_info(h); /* scan */
8281 kfree(h->hba_inquiry_data); /* init_one 10 */
8282 h->hba_inquiry_data = NULL; /* init_one 10 */
8283 hpsa_free_ioaccel2_sg_chain_blocks(h);
8284 hpsa_free_performant_mode(h); /* init_one 7 */
8285 hpsa_free_sg_chain_blocks(h); /* init_one 6 */
8286 hpsa_free_cmd_pool(h); /* init_one 5 */
8288 /* hpsa_free_irqs already called via hpsa_shutdown init_one 4 */
8290 scsi_host_put(h->scsi_host); /* init_one 3 */
8291 h->scsi_host = NULL; /* init_one 3 */
8293 /* includes hpsa_disable_interrupt_mode - pci_init 2 */
8294 hpsa_free_pci_init(h); /* init_one 2.5 */
8296 free_percpu(h->lockup_detected); /* init_one 2 */
8297 h->lockup_detected = NULL; /* init_one 2 */
8298 /* (void) pci_disable_pcie_error_reporting(pdev); */ /* init_one 1 */
8299 kfree(h); /* init_one 1 */
8302 static int hpsa_suspend(__attribute__((unused)) struct pci_dev *pdev,
8303 __attribute__((unused)) pm_message_t state)
8308 static int hpsa_resume(__attribute__((unused)) struct pci_dev *pdev)
8313 static struct pci_driver hpsa_pci_driver = {
8315 .probe = hpsa_init_one,
8316 .remove = hpsa_remove_one,
8317 .id_table = hpsa_pci_device_id, /* id_table */
8318 .shutdown = hpsa_shutdown,
8319 .suspend = hpsa_suspend,
8320 .resume = hpsa_resume,
8323 /* Fill in bucket_map[], given nsgs (the max number of
8324 * scatter gather elements supported) and bucket[],
8325 * which is an array of 8 integers. The bucket[] array
8326 * contains 8 different DMA transfer sizes (in 16
8327 * byte increments) which the controller uses to fetch
8328 * commands. This function fills in bucket_map[], which
8329 * maps a given number of scatter gather elements to one of
8330 * the 8 DMA transfer sizes. The point of it is to allow the
8331 * controller to only do as much DMA as needed to fetch the
8332 * command, with the DMA transfer size encoded in the lower
8333 * bits of the command address.
8335 static void calc_bucket_map(int bucket[], int num_buckets,
8336 int nsgs, int min_blocks, u32 *bucket_map)
8340 /* Note, bucket_map must have nsgs+1 entries. */
8341 for (i = 0; i <= nsgs; i++) {
8342 /* Compute size of a command with i SG entries */
8343 size = i + min_blocks;
8344 b = num_buckets; /* Assume the biggest bucket */
8345 /* Find the bucket that is just big enough */
8346 for (j = 0; j < num_buckets; j++) {
8347 if (bucket[j] >= size) {
8352 /* for a command with i SG entries, use bucket b. */
8358 * return -ENODEV on err, 0 on success (or no action)
8359 * allocates numerous items that must be freed later
8361 static int hpsa_enter_performant_mode(struct ctlr_info *h, u32 trans_support)
8364 unsigned long register_value;
8365 unsigned long transMethod = CFGTBL_Trans_Performant |
8366 (trans_support & CFGTBL_Trans_use_short_tags) |
8367 CFGTBL_Trans_enable_directed_msix |
8368 (trans_support & (CFGTBL_Trans_io_accel1 |
8369 CFGTBL_Trans_io_accel2));
8370 struct access_method access = SA5_performant_access;
8372 /* This is a bit complicated. There are 8 registers on
8373 * the controller which we write to to tell it 8 different
8374 * sizes of commands which there may be. It's a way of
8375 * reducing the DMA done to fetch each command. Encoded into
8376 * each command's tag are 3 bits which communicate to the controller
8377 * which of the eight sizes that command fits within. The size of
8378 * each command depends on how many scatter gather entries there are.
8379 * Each SG entry requires 16 bytes. The eight registers are programmed
8380 * with the number of 16-byte blocks a command of that size requires.
8381 * The smallest command possible requires 5 such 16 byte blocks.
8382 * the largest command possible requires SG_ENTRIES_IN_CMD + 4 16-byte
8383 * blocks. Note, this only extends to the SG entries contained
8384 * within the command block, and does not extend to chained blocks
8385 * of SG elements. bft[] contains the eight values we write to
8386 * the registers. They are not evenly distributed, but have more
8387 * sizes for small commands, and fewer sizes for larger commands.
8389 int bft[8] = {5, 6, 8, 10, 12, 20, 28, SG_ENTRIES_IN_CMD + 4};
8390 #define MIN_IOACCEL2_BFT_ENTRY 5
8391 #define HPSA_IOACCEL2_HEADER_SZ 4
8392 int bft2[16] = {MIN_IOACCEL2_BFT_ENTRY, 6, 7, 8, 9, 10, 11, 12,
8393 13, 14, 15, 16, 17, 18, 19,
8394 HPSA_IOACCEL2_HEADER_SZ + IOACCEL2_MAXSGENTRIES};
8395 BUILD_BUG_ON(ARRAY_SIZE(bft2) != 16);
8396 BUILD_BUG_ON(ARRAY_SIZE(bft) != 8);
8397 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) >
8398 16 * MIN_IOACCEL2_BFT_ENTRY);
8399 BUILD_BUG_ON(sizeof(struct ioaccel2_sg_element) != 16);
8400 BUILD_BUG_ON(28 > SG_ENTRIES_IN_CMD + 4);
8401 /* 5 = 1 s/g entry or 4k
8402 * 6 = 2 s/g entry or 8k
8403 * 8 = 4 s/g entry or 16k
8404 * 10 = 6 s/g entry or 24k
8407 /* If the controller supports either ioaccel method then
8408 * we can also use the RAID stack submit path that does not
8409 * perform the superfluous readl() after each command submission.
8411 if (trans_support & (CFGTBL_Trans_io_accel1 | CFGTBL_Trans_io_accel2))
8412 access = SA5_performant_access_no_read;
8414 /* Controller spec: zero out this buffer. */
8415 for (i = 0; i < h->nreply_queues; i++)
8416 memset(h->reply_queue[i].head, 0, h->reply_queue_size);
8418 bft[7] = SG_ENTRIES_IN_CMD + 4;
8419 calc_bucket_map(bft, ARRAY_SIZE(bft),
8420 SG_ENTRIES_IN_CMD, 4, h->blockFetchTable);
8421 for (i = 0; i < 8; i++)
8422 writel(bft[i], &h->transtable->BlockFetch[i]);
8424 /* size of controller ring buffer */
8425 writel(h->max_commands, &h->transtable->RepQSize);
8426 writel(h->nreply_queues, &h->transtable->RepQCount);
8427 writel(0, &h->transtable->RepQCtrAddrLow32);
8428 writel(0, &h->transtable->RepQCtrAddrHigh32);
8430 for (i = 0; i < h->nreply_queues; i++) {
8431 writel(0, &h->transtable->RepQAddr[i].upper);
8432 writel(h->reply_queue[i].busaddr,
8433 &h->transtable->RepQAddr[i].lower);
8436 writel(0, &h->cfgtable->HostWrite.command_pool_addr_hi);
8437 writel(transMethod, &(h->cfgtable->HostWrite.TransportRequest));
8439 * enable outbound interrupt coalescing in accelerator mode;
8441 if (trans_support & CFGTBL_Trans_io_accel1) {
8442 access = SA5_ioaccel_mode1_access;
8443 writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
8444 writel(4, &h->cfgtable->HostWrite.CoalIntCount);
8446 if (trans_support & CFGTBL_Trans_io_accel2) {
8447 access = SA5_ioaccel_mode2_access;
8448 writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
8449 writel(4, &h->cfgtable->HostWrite.CoalIntCount);
8452 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
8453 if (hpsa_wait_for_mode_change_ack(h)) {
8454 dev_err(&h->pdev->dev,
8455 "performant mode problem - doorbell timeout\n");
8458 register_value = readl(&(h->cfgtable->TransportActive));
8459 if (!(register_value & CFGTBL_Trans_Performant)) {
8460 dev_err(&h->pdev->dev,
8461 "performant mode problem - transport not active\n");
8464 /* Change the access methods to the performant access methods */
8466 h->transMethod = transMethod;
8468 if (!((trans_support & CFGTBL_Trans_io_accel1) ||
8469 (trans_support & CFGTBL_Trans_io_accel2)))
8472 if (trans_support & CFGTBL_Trans_io_accel1) {
8473 /* Set up I/O accelerator mode */
8474 for (i = 0; i < h->nreply_queues; i++) {
8475 writel(i, h->vaddr + IOACCEL_MODE1_REPLY_QUEUE_INDEX);
8476 h->reply_queue[i].current_entry =
8477 readl(h->vaddr + IOACCEL_MODE1_PRODUCER_INDEX);
8479 bft[7] = h->ioaccel_maxsg + 8;
8480 calc_bucket_map(bft, ARRAY_SIZE(bft), h->ioaccel_maxsg, 8,
8481 h->ioaccel1_blockFetchTable);
8483 /* initialize all reply queue entries to unused */
8484 for (i = 0; i < h->nreply_queues; i++)
8485 memset(h->reply_queue[i].head,
8486 (u8) IOACCEL_MODE1_REPLY_UNUSED,
8487 h->reply_queue_size);
8489 /* set all the constant fields in the accelerator command
8490 * frames once at init time to save CPU cycles later.
8492 for (i = 0; i < h->nr_cmds; i++) {
8493 struct io_accel1_cmd *cp = &h->ioaccel_cmd_pool[i];
8495 cp->function = IOACCEL1_FUNCTION_SCSIIO;
8496 cp->err_info = (u32) (h->errinfo_pool_dhandle +
8497 (i * sizeof(struct ErrorInfo)));
8498 cp->err_info_len = sizeof(struct ErrorInfo);
8499 cp->sgl_offset = IOACCEL1_SGLOFFSET;
8500 cp->host_context_flags =
8501 cpu_to_le16(IOACCEL1_HCFLAGS_CISS_FORMAT);
8502 cp->timeout_sec = 0;
8505 cpu_to_le64((i << DIRECT_LOOKUP_SHIFT));
8507 cpu_to_le64(h->ioaccel_cmd_pool_dhandle +
8508 (i * sizeof(struct io_accel1_cmd)));
8510 } else if (trans_support & CFGTBL_Trans_io_accel2) {
8511 u64 cfg_offset, cfg_base_addr_index;
8512 u32 bft2_offset, cfg_base_addr;
8515 rc = hpsa_find_cfg_addrs(h->pdev, h->vaddr, &cfg_base_addr,
8516 &cfg_base_addr_index, &cfg_offset);
8517 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, sg) != 64);
8518 bft2[15] = h->ioaccel_maxsg + HPSA_IOACCEL2_HEADER_SZ;
8519 calc_bucket_map(bft2, ARRAY_SIZE(bft2), h->ioaccel_maxsg,
8520 4, h->ioaccel2_blockFetchTable);
8521 bft2_offset = readl(&h->cfgtable->io_accel_request_size_offset);
8522 BUILD_BUG_ON(offsetof(struct CfgTable,
8523 io_accel_request_size_offset) != 0xb8);
8524 h->ioaccel2_bft2_regs =
8525 remap_pci_mem(pci_resource_start(h->pdev,
8526 cfg_base_addr_index) +
8527 cfg_offset + bft2_offset,
8529 sizeof(*h->ioaccel2_bft2_regs));
8530 for (i = 0; i < ARRAY_SIZE(bft2); i++)
8531 writel(bft2[i], &h->ioaccel2_bft2_regs[i]);
8533 writel(CFGTBL_ChangeReq, h->vaddr + SA5_DOORBELL);
8534 if (hpsa_wait_for_mode_change_ack(h)) {
8535 dev_err(&h->pdev->dev,
8536 "performant mode problem - enabling ioaccel mode\n");
8542 /* Free ioaccel1 mode command blocks and block fetch table */
8543 static void hpsa_free_ioaccel1_cmd_and_bft(struct ctlr_info *h)
8545 if (h->ioaccel_cmd_pool) {
8546 pci_free_consistent(h->pdev,
8547 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
8548 h->ioaccel_cmd_pool,
8549 h->ioaccel_cmd_pool_dhandle);
8550 h->ioaccel_cmd_pool = NULL;
8551 h->ioaccel_cmd_pool_dhandle = 0;
8553 kfree(h->ioaccel1_blockFetchTable);
8554 h->ioaccel1_blockFetchTable = NULL;
8557 /* Allocate ioaccel1 mode command blocks and block fetch table */
8558 static int hpsa_alloc_ioaccel1_cmd_and_bft(struct ctlr_info *h)
8561 readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
8562 if (h->ioaccel_maxsg > IOACCEL1_MAXSGENTRIES)
8563 h->ioaccel_maxsg = IOACCEL1_MAXSGENTRIES;
8565 /* Command structures must be aligned on a 128-byte boundary
8566 * because the 7 lower bits of the address are used by the
8569 BUILD_BUG_ON(sizeof(struct io_accel1_cmd) %
8570 IOACCEL1_COMMANDLIST_ALIGNMENT);
8571 h->ioaccel_cmd_pool =
8572 pci_alloc_consistent(h->pdev,
8573 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool),
8574 &(h->ioaccel_cmd_pool_dhandle));
8576 h->ioaccel1_blockFetchTable =
8577 kmalloc(((h->ioaccel_maxsg + 1) *
8578 sizeof(u32)), GFP_KERNEL);
8580 if ((h->ioaccel_cmd_pool == NULL) ||
8581 (h->ioaccel1_blockFetchTable == NULL))
8584 memset(h->ioaccel_cmd_pool, 0,
8585 h->nr_cmds * sizeof(*h->ioaccel_cmd_pool));
8589 hpsa_free_ioaccel1_cmd_and_bft(h);
8593 /* Free ioaccel2 mode command blocks and block fetch table */
8594 static void hpsa_free_ioaccel2_cmd_and_bft(struct ctlr_info *h)
8596 hpsa_free_ioaccel2_sg_chain_blocks(h);
8598 if (h->ioaccel2_cmd_pool) {
8599 pci_free_consistent(h->pdev,
8600 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
8601 h->ioaccel2_cmd_pool,
8602 h->ioaccel2_cmd_pool_dhandle);
8603 h->ioaccel2_cmd_pool = NULL;
8604 h->ioaccel2_cmd_pool_dhandle = 0;
8606 kfree(h->ioaccel2_blockFetchTable);
8607 h->ioaccel2_blockFetchTable = NULL;
8610 /* Allocate ioaccel2 mode command blocks and block fetch table */
8611 static int hpsa_alloc_ioaccel2_cmd_and_bft(struct ctlr_info *h)
8615 /* Allocate ioaccel2 mode command blocks and block fetch table */
8618 readl(&(h->cfgtable->io_accel_max_embedded_sg_count));
8619 if (h->ioaccel_maxsg > IOACCEL2_MAXSGENTRIES)
8620 h->ioaccel_maxsg = IOACCEL2_MAXSGENTRIES;
8622 BUILD_BUG_ON(sizeof(struct io_accel2_cmd) %
8623 IOACCEL2_COMMANDLIST_ALIGNMENT);
8624 h->ioaccel2_cmd_pool =
8625 pci_alloc_consistent(h->pdev,
8626 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool),
8627 &(h->ioaccel2_cmd_pool_dhandle));
8629 h->ioaccel2_blockFetchTable =
8630 kmalloc(((h->ioaccel_maxsg + 1) *
8631 sizeof(u32)), GFP_KERNEL);
8633 if ((h->ioaccel2_cmd_pool == NULL) ||
8634 (h->ioaccel2_blockFetchTable == NULL)) {
8639 rc = hpsa_allocate_ioaccel2_sg_chain_blocks(h);
8643 memset(h->ioaccel2_cmd_pool, 0,
8644 h->nr_cmds * sizeof(*h->ioaccel2_cmd_pool));
8648 hpsa_free_ioaccel2_cmd_and_bft(h);
8652 /* Free items allocated by hpsa_put_ctlr_into_performant_mode */
8653 static void hpsa_free_performant_mode(struct ctlr_info *h)
8655 kfree(h->blockFetchTable);
8656 h->blockFetchTable = NULL;
8657 hpsa_free_reply_queues(h);
8658 hpsa_free_ioaccel1_cmd_and_bft(h);
8659 hpsa_free_ioaccel2_cmd_and_bft(h);
8662 /* return -ENODEV on error, 0 on success (or no action)
8663 * allocates numerous items that must be freed later
8665 static int hpsa_put_ctlr_into_performant_mode(struct ctlr_info *h)
8668 unsigned long transMethod = CFGTBL_Trans_Performant |
8669 CFGTBL_Trans_use_short_tags;
8672 if (hpsa_simple_mode)
8675 trans_support = readl(&(h->cfgtable->TransportSupport));
8676 if (!(trans_support & PERFORMANT_MODE))
8679 /* Check for I/O accelerator mode support */
8680 if (trans_support & CFGTBL_Trans_io_accel1) {
8681 transMethod |= CFGTBL_Trans_io_accel1 |
8682 CFGTBL_Trans_enable_directed_msix;
8683 rc = hpsa_alloc_ioaccel1_cmd_and_bft(h);
8686 } else if (trans_support & CFGTBL_Trans_io_accel2) {
8687 transMethod |= CFGTBL_Trans_io_accel2 |
8688 CFGTBL_Trans_enable_directed_msix;
8689 rc = hpsa_alloc_ioaccel2_cmd_and_bft(h);
8694 h->nreply_queues = h->msix_vector > 0 ? h->msix_vector : 1;
8695 hpsa_get_max_perf_mode_cmds(h);
8696 /* Performant mode ring buffer and supporting data structures */
8697 h->reply_queue_size = h->max_commands * sizeof(u64);
8699 for (i = 0; i < h->nreply_queues; i++) {
8700 h->reply_queue[i].head = pci_alloc_consistent(h->pdev,
8701 h->reply_queue_size,
8702 &(h->reply_queue[i].busaddr));
8703 if (!h->reply_queue[i].head) {
8705 goto clean1; /* rq, ioaccel */
8707 h->reply_queue[i].size = h->max_commands;
8708 h->reply_queue[i].wraparound = 1; /* spec: init to 1 */
8709 h->reply_queue[i].current_entry = 0;
8712 /* Need a block fetch table for performant mode */
8713 h->blockFetchTable = kmalloc(((SG_ENTRIES_IN_CMD + 1) *
8714 sizeof(u32)), GFP_KERNEL);
8715 if (!h->blockFetchTable) {
8717 goto clean1; /* rq, ioaccel */
8720 rc = hpsa_enter_performant_mode(h, trans_support);
8722 goto clean2; /* bft, rq, ioaccel */
8725 clean2: /* bft, rq, ioaccel */
8726 kfree(h->blockFetchTable);
8727 h->blockFetchTable = NULL;
8728 clean1: /* rq, ioaccel */
8729 hpsa_free_reply_queues(h);
8730 hpsa_free_ioaccel1_cmd_and_bft(h);
8731 hpsa_free_ioaccel2_cmd_and_bft(h);
8735 static int is_accelerated_cmd(struct CommandList *c)
8737 return c->cmd_type == CMD_IOACCEL1 || c->cmd_type == CMD_IOACCEL2;
8740 static void hpsa_drain_accel_commands(struct ctlr_info *h)
8742 struct CommandList *c = NULL;
8743 int i, accel_cmds_out;
8746 do { /* wait for all outstanding ioaccel commands to drain out */
8748 for (i = 0; i < h->nr_cmds; i++) {
8749 c = h->cmd_pool + i;
8750 refcount = atomic_inc_return(&c->refcount);
8751 if (refcount > 1) /* Command is allocated */
8752 accel_cmds_out += is_accelerated_cmd(c);
8755 if (accel_cmds_out <= 0)
8762 * This is it. Register the PCI driver information for the cards we control
8763 * the OS will call our registered routines when it finds one of our cards.
8765 static int __init hpsa_init(void)
8767 return pci_register_driver(&hpsa_pci_driver);
8770 static void __exit hpsa_cleanup(void)
8772 pci_unregister_driver(&hpsa_pci_driver);
8775 static void __attribute__((unused)) verify_offsets(void)
8777 #define VERIFY_OFFSET(member, offset) \
8778 BUILD_BUG_ON(offsetof(struct raid_map_data, member) != offset)
8780 VERIFY_OFFSET(structure_size, 0);
8781 VERIFY_OFFSET(volume_blk_size, 4);
8782 VERIFY_OFFSET(volume_blk_cnt, 8);
8783 VERIFY_OFFSET(phys_blk_shift, 16);
8784 VERIFY_OFFSET(parity_rotation_shift, 17);
8785 VERIFY_OFFSET(strip_size, 18);
8786 VERIFY_OFFSET(disk_starting_blk, 20);
8787 VERIFY_OFFSET(disk_blk_cnt, 28);
8788 VERIFY_OFFSET(data_disks_per_row, 36);
8789 VERIFY_OFFSET(metadata_disks_per_row, 38);
8790 VERIFY_OFFSET(row_cnt, 40);
8791 VERIFY_OFFSET(layout_map_count, 42);
8792 VERIFY_OFFSET(flags, 44);
8793 VERIFY_OFFSET(dekindex, 46);
8794 /* VERIFY_OFFSET(reserved, 48 */
8795 VERIFY_OFFSET(data, 64);
8797 #undef VERIFY_OFFSET
8799 #define VERIFY_OFFSET(member, offset) \
8800 BUILD_BUG_ON(offsetof(struct io_accel2_cmd, member) != offset)
8802 VERIFY_OFFSET(IU_type, 0);
8803 VERIFY_OFFSET(direction, 1);
8804 VERIFY_OFFSET(reply_queue, 2);
8805 /* VERIFY_OFFSET(reserved1, 3); */
8806 VERIFY_OFFSET(scsi_nexus, 4);
8807 VERIFY_OFFSET(Tag, 8);
8808 VERIFY_OFFSET(cdb, 16);
8809 VERIFY_OFFSET(cciss_lun, 32);
8810 VERIFY_OFFSET(data_len, 40);
8811 VERIFY_OFFSET(cmd_priority_task_attr, 44);
8812 VERIFY_OFFSET(sg_count, 45);
8813 /* VERIFY_OFFSET(reserved3 */
8814 VERIFY_OFFSET(err_ptr, 48);
8815 VERIFY_OFFSET(err_len, 56);
8816 /* VERIFY_OFFSET(reserved4 */
8817 VERIFY_OFFSET(sg, 64);
8819 #undef VERIFY_OFFSET
8821 #define VERIFY_OFFSET(member, offset) \
8822 BUILD_BUG_ON(offsetof(struct io_accel1_cmd, member) != offset)
8824 VERIFY_OFFSET(dev_handle, 0x00);
8825 VERIFY_OFFSET(reserved1, 0x02);
8826 VERIFY_OFFSET(function, 0x03);
8827 VERIFY_OFFSET(reserved2, 0x04);
8828 VERIFY_OFFSET(err_info, 0x0C);
8829 VERIFY_OFFSET(reserved3, 0x10);
8830 VERIFY_OFFSET(err_info_len, 0x12);
8831 VERIFY_OFFSET(reserved4, 0x13);
8832 VERIFY_OFFSET(sgl_offset, 0x14);
8833 VERIFY_OFFSET(reserved5, 0x15);
8834 VERIFY_OFFSET(transfer_len, 0x1C);
8835 VERIFY_OFFSET(reserved6, 0x20);
8836 VERIFY_OFFSET(io_flags, 0x24);
8837 VERIFY_OFFSET(reserved7, 0x26);
8838 VERIFY_OFFSET(LUN, 0x34);
8839 VERIFY_OFFSET(control, 0x3C);
8840 VERIFY_OFFSET(CDB, 0x40);
8841 VERIFY_OFFSET(reserved8, 0x50);
8842 VERIFY_OFFSET(host_context_flags, 0x60);
8843 VERIFY_OFFSET(timeout_sec, 0x62);
8844 VERIFY_OFFSET(ReplyQueue, 0x64);
8845 VERIFY_OFFSET(reserved9, 0x65);
8846 VERIFY_OFFSET(tag, 0x68);
8847 VERIFY_OFFSET(host_addr, 0x70);
8848 VERIFY_OFFSET(CISS_LUN, 0x78);
8849 VERIFY_OFFSET(SG, 0x78 + 8);
8850 #undef VERIFY_OFFSET
8853 module_init(hpsa_init);
8854 module_exit(hpsa_cleanup);