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[SCSI] qla4xxx: Don't check FW alive if ISP82XX reset is in progress
[linux-2.6-block.git] / drivers / scsi / qla4xxx / ql4_os.c
CommitLineData
afaf5a2d
DS		 1/*
2 * QLogic iSCSI HBA Driver
7d01d069 3 * Copyright (c) 2003-2010 QLogic Corporation
afaf5a2d
DS		 4 *
5 * See LICENSE.qla4xxx for copyright and licensing details.
6 */
7#include <linux/moduleparam.h>
5a0e3ad6 8#include <linux/slab.h>
afaf5a2d
DS		 9
10#include <scsi/scsi_tcq.h>
11#include <scsi/scsicam.h>
12
13#include "ql4_def.h"
bee4fe8e
DS		 14#include "ql4_version.h"
15#include "ql4_glbl.h"
16#include "ql4_dbg.h"
17#include "ql4_inline.h"
afaf5a2d
DS		 18
19/*
20 * Driver version
21 */
47975477 22static char qla4xxx_version_str[40];
afaf5a2d
DS		 23
24/*
25 * SRB allocation cache
26 */
e18b890b 27static struct kmem_cache *srb_cachep;
afaf5a2d
DS		 28
29/*
30 * Module parameter information and variables
31 */
afaf5a2d 32int ql4xdontresethba = 0;
f4f5df23 33module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
afaf5a2d 34MODULE_PARM_DESC(ql4xdontresethba,
f4f5df23
VC		 35 "Don't reset the HBA for driver recovery \n"
36 " 0 - It will reset HBA (Default)\n"
37 " 1 - It will NOT reset HBA");
afaf5a2d 38
11010fec 39int ql4xextended_error_logging = 0; /* 0 = off, 1 = log errors */
f4f5df23 40module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
11010fec 41MODULE_PARM_DESC(ql4xextended_error_logging,
afaf5a2d
DS		 42 "Option to enable extended error logging, "
43 "Default is 0 - no logging, 1 - debug logging");
44
f4f5df23
VC		 45int ql4xenablemsix = 1;
46module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
47MODULE_PARM_DESC(ql4xenablemsix,
48 "Set to enable MSI or MSI-X interrupt mechanism.\n"
49 " 0 = enable INTx interrupt mechanism.\n"
50 " 1 = enable MSI-X interrupt mechanism (Default).\n"
51 " 2 = enable MSI interrupt mechanism.");
477ffb9d 52
d510d965 53#define QL4_DEF_QDEPTH 32
8bb4033d
VC		 54static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
55module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
56MODULE_PARM_DESC(ql4xmaxqdepth,
57 "Maximum queue depth to report for target devices.\n"
58 " Default: 32.");
d510d965 59
3038727c
VC		 60static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
61module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
62MODULE_PARM_DESC(ql4xsess_recovery_tmo,
63 "Target Session Recovery Timeout.\n"
64 " Default: 30 sec.");
65
afaf5a2d
DS		 66/*
67 * SCSI host template entry points
68 */
47975477 69static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
afaf5a2d
DS		 70
71/*
72 * iSCSI template entry points
73 */
2174a04e
MC		 74static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost,
75 enum iscsi_tgt_dscvr type, uint32_t enable,
76 struct sockaddr *dst_addr);
afaf5a2d
DS		 77static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
78 enum iscsi_param param, char *buf);
79static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess,
80 enum iscsi_param param, char *buf);
aa1e93a2
MC		 81static int qla4xxx_host_get_param(struct Scsi_Host *shost,
82 enum iscsi_host_param param, char *buf);
afaf5a2d 83static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session);
5c656af7 84static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
afaf5a2d
DS		 85
86/*
87 * SCSI host template entry points
88 */
f281233d 89static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
09a0f719 90static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
afaf5a2d 91static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
ce545039 92static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
afaf5a2d
DS		 93static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
94static int qla4xxx_slave_alloc(struct scsi_device *device);
95static int qla4xxx_slave_configure(struct scsi_device *device);
96static void qla4xxx_slave_destroy(struct scsi_device *sdev);
024f801f 97static void qla4xxx_scan_start(struct Scsi_Host *shost);
afaf5a2d 98
f4f5df23
VC		 99static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
100 QLA82XX_LEGACY_INTR_CONFIG;
101
afaf5a2d
DS		 102static struct scsi_host_template qla4xxx_driver_template = {
103 .module = THIS_MODULE,
104 .name = DRIVER_NAME,
105 .proc_name = DRIVER_NAME,
106 .queuecommand = qla4xxx_queuecommand,
107
09a0f719 108 .eh_abort_handler = qla4xxx_eh_abort,
afaf5a2d 109 .eh_device_reset_handler = qla4xxx_eh_device_reset,
ce545039 110 .eh_target_reset_handler = qla4xxx_eh_target_reset,
afaf5a2d 111 .eh_host_reset_handler = qla4xxx_eh_host_reset,
5c656af7 112 .eh_timed_out = qla4xxx_eh_cmd_timed_out,
afaf5a2d
DS		 113
114 .slave_configure = qla4xxx_slave_configure,
115 .slave_alloc = qla4xxx_slave_alloc,
116 .slave_destroy = qla4xxx_slave_destroy,
117
921601b7 118 .scan_finished = iscsi_scan_finished,
024f801f 119 .scan_start = qla4xxx_scan_start,
921601b7 120
afaf5a2d
DS		 121 .this_id = -1,
122 .cmd_per_lun = 3,
123 .use_clustering = ENABLE_CLUSTERING,
124 .sg_tablesize = SG_ALL,
125
126 .max_sectors = 0xFFFF,
127};
128
129static struct iscsi_transport qla4xxx_iscsi_transport = {
130 .owner = THIS_MODULE,
131 .name = DRIVER_NAME,
d8196ed2
MC		 132 .caps = CAP_FW_DB | CAP_SENDTARGETS_OFFLOAD |
133 CAP_DATA_PATH_OFFLOAD,
aa1e93a2 134 .param_mask = ISCSI_CONN_PORT | ISCSI_CONN_ADDRESS |
3b2bef1f
VC		 135 ISCSI_TARGET_NAME | ISCSI_TPGT |
136 ISCSI_TARGET_ALIAS,
8ad5781a 137 .host_param_mask = ISCSI_HOST_HWADDRESS |
22236961 138 ISCSI_HOST_IPADDRESS |
8ad5781a 139 ISCSI_HOST_INITIATOR_NAME,
afaf5a2d
DS		 140 .tgt_dscvr = qla4xxx_tgt_dscvr,
141 .get_conn_param = qla4xxx_conn_get_param,
142 .get_session_param = qla4xxx_sess_get_param,
aa1e93a2 143 .get_host_param = qla4xxx_host_get_param,
afaf5a2d
DS		 144 .session_recovery_timedout = qla4xxx_recovery_timedout,
145};
146
147static struct scsi_transport_template *qla4xxx_scsi_transport;
148
5c656af7
MC		 149static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
150{
151 struct iscsi_cls_session *session;
152 struct ddb_entry *ddb_entry;
153
154 session = starget_to_session(scsi_target(sc->device));
155 ddb_entry = session->dd_data;
156
157 /* if we are not logged in then the LLD is going to clean up the cmd */
158 if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE)
159 return BLK_EH_RESET_TIMER;
160 else
161 return BLK_EH_NOT_HANDLED;
162}
163
afaf5a2d
DS		 164static void qla4xxx_recovery_timedout(struct iscsi_cls_session *session)
165{
166 struct ddb_entry *ddb_entry = session->dd_data;
167 struct scsi_qla_host *ha = ddb_entry->ha;
168
568d303b
MC		 169 if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
170 atomic_set(&ddb_entry->state, DDB_STATE_DEAD);
171
3013cea8 172 DEBUG2(printk("scsi%ld: %s: ddb [%d] session recovery timeout "
568d303b
MC		 173 "of (%d) secs exhausted, marking device DEAD.\n",
174 ha->host_no, __func__, ddb_entry->fw_ddb_index,
3038727c 175 ddb_entry->sess->recovery_tmo));
568d303b 176 }
afaf5a2d
DS		 177}
178
aa1e93a2
MC		 179static int qla4xxx_host_get_param(struct Scsi_Host *shost,
180 enum iscsi_host_param param, char *buf)
181{
182 struct scsi_qla_host *ha = to_qla_host(shost);
183 int len;
184
185 switch (param) {
186 case ISCSI_HOST_PARAM_HWADDRESS:
7ffc49a6 187 len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
8ad5781a 188 break;
22236961
MC		 189 case ISCSI_HOST_PARAM_IPADDRESS:
190 len = sprintf(buf, "%d.%d.%d.%d\n", ha->ip_address[0],
191 ha->ip_address[1], ha->ip_address[2],
192 ha->ip_address[3]);
193 break;
8ad5781a 194 case ISCSI_HOST_PARAM_INITIATOR_NAME:
22236961 195 len = sprintf(buf, "%s\n", ha->name_string);
aa1e93a2
MC		 196 break;
197 default:
198 return -ENOSYS;
199 }
200
201 return len;
202}
203
afaf5a2d
DS		 204static int qla4xxx_sess_get_param(struct iscsi_cls_session *sess,
205 enum iscsi_param param, char *buf)
206{
207 struct ddb_entry *ddb_entry = sess->dd_data;
208 int len;
209
210 switch (param) {
211 case ISCSI_PARAM_TARGET_NAME:
212 len = snprintf(buf, PAGE_SIZE - 1, "%s\n",
213 ddb_entry->iscsi_name);
214 break;
215 case ISCSI_PARAM_TPGT:
216 len = sprintf(buf, "%u\n", ddb_entry->tpgt);
217 break;
3b2bef1f
VC		 218 case ISCSI_PARAM_TARGET_ALIAS:
219 len = snprintf(buf, PAGE_SIZE - 1, "%s\n",
220 ddb_entry->iscsi_alias);
221 break;
afaf5a2d
DS		 222 default:
223 return -ENOSYS;
224 }
225
226 return len;
227}
228
229static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
230 enum iscsi_param param, char *buf)
231{
232 struct iscsi_cls_session *session;
233 struct ddb_entry *ddb_entry;
234 int len;
235
236 session = iscsi_dev_to_session(conn->dev.parent);
237 ddb_entry = session->dd_data;
238
239 switch (param) {
240 case ISCSI_PARAM_CONN_PORT:
241 len = sprintf(buf, "%hu\n", ddb_entry->port);
242 break;
243 case ISCSI_PARAM_CONN_ADDRESS:
244 /* TODO: what are the ipv6 bits */
63779436 245 len = sprintf(buf, "%pI4\n", &ddb_entry->ip_addr);
afaf5a2d
DS		 246 break;
247 default:
248 return -ENOSYS;
249 }
250
251 return len;
252}
253
2174a04e
MC		 254static int qla4xxx_tgt_dscvr(struct Scsi_Host *shost,
255 enum iscsi_tgt_dscvr type, uint32_t enable,
256 struct sockaddr *dst_addr)
afaf5a2d
DS		 257{
258 struct scsi_qla_host *ha;
afaf5a2d
DS		 259 struct sockaddr_in *addr;
260 struct sockaddr_in6 *addr6;
261 int ret = 0;
262
afaf5a2d
DS		 263 ha = (struct scsi_qla_host *) shost->hostdata;
264
265 switch (type) {
266 case ISCSI_TGT_DSCVR_SEND_TARGETS:
267 if (dst_addr->sa_family == AF_INET) {
268 addr = (struct sockaddr_in *)dst_addr;
269 if (qla4xxx_send_tgts(ha, (char *)&addr->sin_addr,
270 addr->sin_port) != QLA_SUCCESS)
271 ret = -EIO;
272 } else if (dst_addr->sa_family == AF_INET6) {
273 /*
274 * TODO: fix qla4xxx_send_tgts
275 */
276 addr6 = (struct sockaddr_in6 *)dst_addr;
277 if (qla4xxx_send_tgts(ha, (char *)&addr6->sin6_addr,
278 addr6->sin6_port) != QLA_SUCCESS)
279 ret = -EIO;
280 } else
281 ret = -ENOSYS;
282 break;
283 default:
284 ret = -ENOSYS;
285 }
afaf5a2d
DS		 286 return ret;
287}
288
289void qla4xxx_destroy_sess(struct ddb_entry *ddb_entry)
290{
291 if (!ddb_entry->sess)
292 return;
293
294 if (ddb_entry->conn) {
26974789 295 atomic_set(&ddb_entry->state, DDB_STATE_DEAD);
afaf5a2d
DS		 296 iscsi_remove_session(ddb_entry->sess);
297 }
298 iscsi_free_session(ddb_entry->sess);
299}
300
301int qla4xxx_add_sess(struct ddb_entry *ddb_entry)
302{
303 int err;
304
3038727c 305 ddb_entry->sess->recovery_tmo = ql4xsess_recovery_tmo;
3013cea8 306
afaf5a2d
DS		 307 err = iscsi_add_session(ddb_entry->sess, ddb_entry->fw_ddb_index);
308 if (err) {
309 DEBUG2(printk(KERN_ERR "Could not add session.\n"));
310 return err;
311 }
312
5d91e209 313 ddb_entry->conn = iscsi_create_conn(ddb_entry->sess, 0, 0);
afaf5a2d
DS		 314 if (!ddb_entry->conn) {
315 iscsi_remove_session(ddb_entry->sess);
316 DEBUG2(printk(KERN_ERR "Could not add connection.\n"));
317 return -ENOMEM;
318 }
b635930d
MC		 319
320 /* finally ready to go */
321 iscsi_unblock_session(ddb_entry->sess);
afaf5a2d
DS		 322 return 0;
323}
324
325struct ddb_entry *qla4xxx_alloc_sess(struct scsi_qla_host *ha)
326{
327 struct ddb_entry *ddb_entry;
328 struct iscsi_cls_session *sess;
329
5d91e209
MC		 330 sess = iscsi_alloc_session(ha->host, &qla4xxx_iscsi_transport,
331 sizeof(struct ddb_entry));
afaf5a2d
DS		 332 if (!sess)
333 return NULL;
334
335 ddb_entry = sess->dd_data;
336 memset(ddb_entry, 0, sizeof(*ddb_entry));
337 ddb_entry->ha = ha;
338 ddb_entry->sess = sess;
339 return ddb_entry;
340}
341
024f801f
MC		 342static void qla4xxx_scan_start(struct Scsi_Host *shost)
343{
344 struct scsi_qla_host *ha = shost_priv(shost);
345 struct ddb_entry *ddb_entry, *ddbtemp;
346
347 /* finish setup of sessions that were already setup in firmware */
348 list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) {
349 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE)
350 qla4xxx_add_sess(ddb_entry);
351 }
352}
353
afaf5a2d
DS		 354/*
355 * Timer routines
356 */
357
358static void qla4xxx_start_timer(struct scsi_qla_host *ha, void *func,
359 unsigned long interval)
360{
361 DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
362 __func__, ha->host->host_no));
363 init_timer(&ha->timer);
364 ha->timer.expires = jiffies + interval * HZ;
365 ha->timer.data = (unsigned long)ha;
366 ha->timer.function = (void (*)(unsigned long))func;
367 add_timer(&ha->timer);
368 ha->timer_active = 1;
369}
370
371static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
372{
373 del_timer_sync(&ha->timer);
374 ha->timer_active = 0;
375}
376
377/***
378 * qla4xxx_mark_device_missing - mark a device as missing.
379 * @ha: Pointer to host adapter structure.
380 * @ddb_entry: Pointer to device database entry
381 *
f4f5df23 382 * This routine marks a device missing and close connection.
afaf5a2d
DS		 383 **/
384void qla4xxx_mark_device_missing(struct scsi_qla_host *ha,
385 struct ddb_entry *ddb_entry)
386{
f4f5df23
VC		 387 if ((atomic_read(&ddb_entry->state) != DDB_STATE_DEAD)) {
388 atomic_set(&ddb_entry->state, DDB_STATE_MISSING);
389 DEBUG2(printk("scsi%ld: ddb [%d] marked MISSING\n",
390 ha->host_no, ddb_entry->fw_ddb_index));
391 } else
392 DEBUG2(printk("scsi%ld: ddb [%d] DEAD\n", ha->host_no,
393 ddb_entry->fw_ddb_index))
394
b635930d 395 iscsi_block_session(ddb_entry->sess);
e5bd7b54 396 iscsi_conn_error_event(ddb_entry->conn, ISCSI_ERR_CONN_FAILED);
afaf5a2d
DS		 397}
398
f4f5df23
VC		 399/**
400 * qla4xxx_mark_all_devices_missing - mark all devices as missing.
401 * @ha: Pointer to host adapter structure.
402 *
403 * This routine marks a device missing and resets the relogin retry count.
404 **/
405void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
406{
407 struct ddb_entry *ddb_entry, *ddbtemp;
408 list_for_each_entry_safe(ddb_entry, ddbtemp, &ha->ddb_list, list) {
409 qla4xxx_mark_device_missing(ha, ddb_entry);
410 }
411}
412
afaf5a2d
DS		 413static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
414 struct ddb_entry *ddb_entry,
415 struct scsi_cmnd *cmd,
416 void (*done)(struct scsi_cmnd *))
417{
418 struct srb *srb;
419
420 srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
421 if (!srb)
422 return srb;
423
09a0f719 424 kref_init(&srb->srb_ref);
afaf5a2d
DS		 425 srb->ha = ha;
426 srb->ddb = ddb_entry;
427 srb->cmd = cmd;
428 srb->flags = 0;
5369887a 429 CMD_SP(cmd) = (void *)srb;
afaf5a2d
DS		 430 cmd->scsi_done = done;
431
432 return srb;
433}
434
435static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
436{
437 struct scsi_cmnd *cmd = srb->cmd;
438
439 if (srb->flags & SRB_DMA_VALID) {
5f7186c8 440 scsi_dma_unmap(cmd);
afaf5a2d
DS		 441 srb->flags &= ~SRB_DMA_VALID;
442 }
5369887a 443 CMD_SP(cmd) = NULL;
afaf5a2d
DS		 444}
445
09a0f719 446void qla4xxx_srb_compl(struct kref *ref)
afaf5a2d 447{
09a0f719 448 struct srb *srb = container_of(ref, struct srb, srb_ref);
afaf5a2d 449 struct scsi_cmnd *cmd = srb->cmd;
09a0f719 450 struct scsi_qla_host *ha = srb->ha;
afaf5a2d
DS		 451
452 qla4xxx_srb_free_dma(ha, srb);
453
454 mempool_free(srb, ha->srb_mempool);
455
456 cmd->scsi_done(cmd);
457}
458
459/**
460 * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
461 * @cmd: Pointer to Linux's SCSI command structure
462 * @done_fn: Function that the driver calls to notify the SCSI mid-layer
463 * that the command has been processed.
464 *
465 * Remarks:
466 * This routine is invoked by Linux to send a SCSI command to the driver.
467 * The mid-level driver tries to ensure that queuecommand never gets
468 * invoked concurrently with itself or the interrupt handler (although
469 * the interrupt handler may call this routine as part of request-
470 * completion handling). Unfortunely, it sometimes calls the scheduler
471 * in interrupt context which is a big NO! NO!.
472 **/
f281233d 473static int qla4xxx_queuecommand_lck(struct scsi_cmnd *cmd,
afaf5a2d
DS		 474 void (*done)(struct scsi_cmnd *))
475{
476 struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
477 struct ddb_entry *ddb_entry = cmd->device->hostdata;
7fb1921b 478 struct iscsi_cls_session *sess = ddb_entry->sess;
afaf5a2d
DS		 479 struct srb *srb;
480 int rval;
481
2232be0d
LC		 482 if (test_bit(AF_EEH_BUSY, &ha->flags)) {
483 if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
484 cmd->result = DID_NO_CONNECT << 16;
485 else
486 cmd->result = DID_REQUEUE << 16;
487 goto qc_fail_command;
488 }
489
7fb1921b
MC		 490 if (!sess) {
491 cmd->result = DID_IMM_RETRY << 16;
492 goto qc_fail_command;
493 }
494
495 rval = iscsi_session_chkready(sess);
496 if (rval) {
497 cmd->result = rval;
498 goto qc_fail_command;
499 }
500
afaf5a2d
DS		 501 if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
502 if (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD) {
503 cmd->result = DID_NO_CONNECT << 16;
504 goto qc_fail_command;
505 }
c5e98e91 506 return SCSI_MLQUEUE_TARGET_BUSY;
afaf5a2d
DS		 507 }
508
f4f5df23
VC		 509 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
510 test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
511 test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
512 test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
513 test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
514 !test_bit(AF_ONLINE, &ha->flags) ||
515 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
477ffb9d
DS		 516 goto qc_host_busy;
517
afaf5a2d
DS		 518 spin_unlock_irq(ha->host->host_lock);
519
520 srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd, done);
521 if (!srb)
522 goto qc_host_busy_lock;
523
524 rval = qla4xxx_send_command_to_isp(ha, srb);
525 if (rval != QLA_SUCCESS)
526 goto qc_host_busy_free_sp;
527
528 spin_lock_irq(ha->host->host_lock);
529 return 0;
530
531qc_host_busy_free_sp:
532 qla4xxx_srb_free_dma(ha, srb);
533 mempool_free(srb, ha->srb_mempool);
534
535qc_host_busy_lock:
536 spin_lock_irq(ha->host->host_lock);
537
538qc_host_busy:
539 return SCSI_MLQUEUE_HOST_BUSY;
540
541qc_fail_command:
542 done(cmd);
543
544 return 0;
545}
546
f281233d
JG		 547static DEF_SCSI_QCMD(qla4xxx_queuecommand)
548
afaf5a2d
DS		 549/**
550 * qla4xxx_mem_free - frees memory allocated to adapter
551 * @ha: Pointer to host adapter structure.
552 *
553 * Frees memory previously allocated by qla4xxx_mem_alloc
554 **/
555static void qla4xxx_mem_free(struct scsi_qla_host *ha)
556{
557 if (ha->queues)
558 dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
559 ha->queues_dma);
560
561 ha->queues_len = 0;
562 ha->queues = NULL;
563 ha->queues_dma = 0;
564 ha->request_ring = NULL;
565 ha->request_dma = 0;
566 ha->response_ring = NULL;
567 ha->response_dma = 0;
568 ha->shadow_regs = NULL;
569 ha->shadow_regs_dma = 0;
570
571 /* Free srb pool. */
572 if (ha->srb_mempool)
573 mempool_destroy(ha->srb_mempool);
574
575 ha->srb_mempool = NULL;
576
577 /* release io space registers */
f4f5df23
VC		 578 if (is_qla8022(ha)) {
579 if (ha->nx_pcibase)
580 iounmap(
581 (struct device_reg_82xx __iomem *)ha->nx_pcibase);
f4f5df23 582 } else if (ha->reg)
afaf5a2d
DS		 583 iounmap(ha->reg);
584 pci_release_regions(ha->pdev);
585}
586
587/**
588 * qla4xxx_mem_alloc - allocates memory for use by adapter.
589 * @ha: Pointer to host adapter structure
590 *
591 * Allocates DMA memory for request and response queues. Also allocates memory
592 * for srbs.
593 **/
594static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
595{
596 unsigned long align;
597
598 /* Allocate contiguous block of DMA memory for queues. */
599 ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
600 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
601 sizeof(struct shadow_regs) +
602 MEM_ALIGN_VALUE +
603 (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
604 ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
605 &ha->queues_dma, GFP_KERNEL);
606 if (ha->queues == NULL) {
c2660df3
VC		 607 ql4_printk(KERN_WARNING, ha,
608 "Memory Allocation failed - queues.\n");
afaf5a2d
DS		 609
610 goto mem_alloc_error_exit;
611 }
612 memset(ha->queues, 0, ha->queues_len);
613
614 /*
615 * As per RISC alignment requirements -- the bus-address must be a
616 * multiple of the request-ring size (in bytes).
617 */
618 align = 0;
619 if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
620 align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
621 (MEM_ALIGN_VALUE - 1));
622
623 /* Update request and response queue pointers. */
624 ha->request_dma = ha->queues_dma + align;
625 ha->request_ring = (struct queue_entry *) (ha->queues + align);
626 ha->response_dma = ha->queues_dma + align +
627 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
628 ha->response_ring = (struct queue_entry *) (ha->queues + align +
629 (REQUEST_QUEUE_DEPTH *
630 QUEUE_SIZE));
631 ha->shadow_regs_dma = ha->queues_dma + align +
632 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
633 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
634 ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
635 (REQUEST_QUEUE_DEPTH *
636 QUEUE_SIZE) +
637 (RESPONSE_QUEUE_DEPTH *
638 QUEUE_SIZE));
639
640 /* Allocate memory for srb pool. */
641 ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
642 mempool_free_slab, srb_cachep);
643 if (ha->srb_mempool == NULL) {
c2660df3
VC		 644 ql4_printk(KERN_WARNING, ha,
645 "Memory Allocation failed - SRB Pool.\n");
afaf5a2d
DS		 646
647 goto mem_alloc_error_exit;
648 }
649
650 return QLA_SUCCESS;
651
652mem_alloc_error_exit:
653 qla4xxx_mem_free(ha);
654 return QLA_ERROR;
655}
656
f4f5df23
VC		 657/**
658 * qla4_8xxx_check_fw_alive - Check firmware health
659 * @ha: Pointer to host adapter structure.
660 *
661 * Context: Interrupt
662 **/
663static void qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
664{
665 uint32_t fw_heartbeat_counter, halt_status;
666
667 fw_heartbeat_counter = qla4_8xxx_rd_32(ha, QLA82XX_PEG_ALIVE_COUNTER);
2232be0d
LC		 668 /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
669 if (fw_heartbeat_counter == 0xffffffff) {
670 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
671 "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
672 ha->host_no, __func__));
673 return;
674 }
f4f5df23
VC		 675
676 if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
677 ha->seconds_since_last_heartbeat++;
678 /* FW not alive after 2 seconds */
679 if (ha->seconds_since_last_heartbeat == 2) {
680 ha->seconds_since_last_heartbeat = 0;
681 halt_status = qla4_8xxx_rd_32(ha,
68d92ebf
VC		 682 QLA82XX_PEG_HALT_STATUS1);
683
684 ql4_printk(KERN_INFO, ha,
685 "scsi(%ld): %s, Dumping hw/fw registers:\n "
686 " PEG_HALT_STATUS1: 0x%x, PEG_HALT_STATUS2:"
687 " 0x%x,\n PEG_NET_0_PC: 0x%x, PEG_NET_1_PC:"
688 " 0x%x,\n PEG_NET_2_PC: 0x%x, PEG_NET_3_PC:"
689 " 0x%x,\n PEG_NET_4_PC: 0x%x\n",
690 ha->host_no, __func__, halt_status,
691 qla4_8xxx_rd_32(ha,
692 QLA82XX_PEG_HALT_STATUS2),
693 qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_0 +
694 0x3c),
695 qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_1 +
696 0x3c),
697 qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_2 +
698 0x3c),
699 qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_3 +
700 0x3c),
701 qla4_8xxx_rd_32(ha, QLA82XX_CRB_PEG_NET_4 +
702 0x3c));
21033639 703
f4f5df23
VC		 704 /* Since we cannot change dev_state in interrupt
705 * context, set appropriate DPC flag then wakeup
706 * DPC */
707 if (halt_status & HALT_STATUS_UNRECOVERABLE)
708 set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
709 else {
710 printk("scsi%ld: %s: detect abort needed!\n",
711 ha->host_no, __func__);
712 set_bit(DPC_RESET_HA, &ha->dpc_flags);
713 }
714 qla4xxx_wake_dpc(ha);
21033639 715 qla4xxx_mailbox_premature_completion(ha);
f4f5df23 716 }
99457d75
LC		 717 } else
718 ha->seconds_since_last_heartbeat = 0;
719
f4f5df23
VC		 720 ha->fw_heartbeat_counter = fw_heartbeat_counter;
721}
722
723/**
724 * qla4_8xxx_watchdog - Poll dev state
725 * @ha: Pointer to host adapter structure.
726 *
727 * Context: Interrupt
728 **/
729void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
730{
731 uint32_t dev_state;
732
733 dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
734
735 /* don't poll if reset is going on */
d56a1f7b
LC		 736 if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
737 test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
977f46a4 738 test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
f4f5df23
VC		 739 if (dev_state == QLA82XX_DEV_NEED_RESET &&
740 !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
3930b8c1
VC		 741 if (!ql4xdontresethba) {
742 ql4_printk(KERN_INFO, ha, "%s: HW State: "
743 "NEED RESET!\n", __func__);
744 set_bit(DPC_RESET_HA, &ha->dpc_flags);
745 qla4xxx_wake_dpc(ha);
746 qla4xxx_mailbox_premature_completion(ha);
747 }
f4f5df23
VC		 748 } else if (dev_state == QLA82XX_DEV_NEED_QUIESCENT &&
749 !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
3930b8c1
VC		 750 ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
751 __func__);
f4f5df23
VC		 752 set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
753 qla4xxx_wake_dpc(ha);
754 } else {
755 /* Check firmware health */
756 qla4_8xxx_check_fw_alive(ha);
757 }
758 }
759}
760
afaf5a2d
DS		 761/**
762 * qla4xxx_timer - checks every second for work to do.
763 * @ha: Pointer to host adapter structure.
764 **/
765static void qla4xxx_timer(struct scsi_qla_host *ha)
766{
767 struct ddb_entry *ddb_entry, *dtemp;
768 int start_dpc = 0;
2232be0d
LC		 769 uint16_t w;
770
771 /* If we are in the middle of AER/EEH processing
772 * skip any processing and reschedule the timer
773 */
774 if (test_bit(AF_EEH_BUSY, &ha->flags)) {
775 mod_timer(&ha->timer, jiffies + HZ);
776 return;
777 }
778
779 /* Hardware read to trigger an EEH error during mailbox waits. */
780 if (!pci_channel_offline(ha->pdev))
781 pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
afaf5a2d 782
f4f5df23
VC		 783 if (is_qla8022(ha)) {
784 qla4_8xxx_watchdog(ha);
785 }
786
afaf5a2d
DS		 787 /* Search for relogin's to time-out and port down retry. */
788 list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) {
789 /* Count down time between sending relogins */
790 if (adapter_up(ha) &&
791 !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
792 atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
793 if (atomic_read(&ddb_entry->retry_relogin_timer) !=
794 INVALID_ENTRY) {
795 if (atomic_read(&ddb_entry->retry_relogin_timer)
796 == 0) {
797 atomic_set(&ddb_entry->
798 retry_relogin_timer,
799 INVALID_ENTRY);
800 set_bit(DPC_RELOGIN_DEVICE,
801 &ha->dpc_flags);
802 set_bit(DF_RELOGIN, &ddb_entry->flags);
f4f5df23 803 DEBUG2(printk("scsi%ld: %s: ddb [%d]"
afaf5a2d
DS		 804 " login device\n",
805 ha->host_no, __func__,
806 ddb_entry->fw_ddb_index));
807 } else
808 atomic_dec(&ddb_entry->
809 retry_relogin_timer);
810 }
811 }
812
813 /* Wait for relogin to timeout */
814 if (atomic_read(&ddb_entry->relogin_timer) &&
815 (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
816 /*
817 * If the relogin times out and the device is
818 * still NOT ONLINE then try and relogin again.
819 */
820 if (atomic_read(&ddb_entry->state) !=
821 DDB_STATE_ONLINE &&
822 ddb_entry->fw_ddb_device_state ==
823 DDB_DS_SESSION_FAILED) {
824 /* Reset retry relogin timer */
825 atomic_inc(&ddb_entry->relogin_retry_count);
f4f5df23 826 DEBUG2(printk("scsi%ld: ddb [%d] relogin"
afaf5a2d
DS		 827 " timed out-retrying"
828 " relogin (%d)\n",
829 ha->host_no,
830 ddb_entry->fw_ddb_index,
831 atomic_read(&ddb_entry->
832 relogin_retry_count))
833 );
834 start_dpc++;
f4f5df23 835 DEBUG(printk("scsi%ld:%d:%d: ddb [%d] "
cd09b2c3 836 "initiate relogin after"
afaf5a2d
DS		 837 " %d seconds\n",
838 ha->host_no, ddb_entry->bus,
839 ddb_entry->target,
840 ddb_entry->fw_ddb_index,
841 ddb_entry->default_time2wait + 4)
842 );
843
844 atomic_set(&ddb_entry->retry_relogin_timer,
845 ddb_entry->default_time2wait + 4);
846 }
847 }
848 }
849
f4f5df23
VC		 850 if (!is_qla8022(ha)) {
851 /* Check for heartbeat interval. */
852 if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
853 ha->heartbeat_interval != 0) {
854 ha->seconds_since_last_heartbeat++;
855 if (ha->seconds_since_last_heartbeat >
856 ha->heartbeat_interval + 2)
857 set_bit(DPC_RESET_HA, &ha->dpc_flags);
858 }
afaf5a2d
DS		 859 }
860
afaf5a2d
DS		 861 /* Wakeup the dpc routine for this adapter, if needed. */
862 if ((start_dpc ||
863 test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
864 test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
865 test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
f4f5df23 866 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
afaf5a2d
DS		 867 test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
868 test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
065aa1b4 869 test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
f4f5df23
VC		 870 test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
871 test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
afaf5a2d 872 test_bit(DPC_AEN, &ha->dpc_flags)) &&
f4f5df23 873 !test_bit(AF_DPC_SCHEDULED, &ha->flags) &&
afaf5a2d
DS		 874 ha->dpc_thread) {
875 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
876 " - dpc flags = 0x%lx\n",
877 ha->host_no, __func__, ha->dpc_flags));
f4f5df23 878 qla4xxx_wake_dpc(ha);
afaf5a2d
DS		 879 }
880
881 /* Reschedule timer thread to call us back in one second */
882 mod_timer(&ha->timer, jiffies + HZ);
883
884 DEBUG2(ha->seconds_since_last_intr++);
885}
886
887/**
888 * qla4xxx_cmd_wait - waits for all outstanding commands to complete
889 * @ha: Pointer to host adapter structure.
890 *
891 * This routine stalls the driver until all outstanding commands are returned.
892 * Caller must release the Hardware Lock prior to calling this routine.
893 **/
894static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
895{
896 uint32_t index = 0;
afaf5a2d
DS		 897 unsigned long flags;
898 struct scsi_cmnd *cmd;
afaf5a2d 899
f4f5df23
VC		 900 unsigned long wtime = jiffies + (WAIT_CMD_TOV * HZ);
901
902 DEBUG2(ql4_printk(KERN_INFO, ha, "Wait up to %d seconds for cmds to "
903 "complete\n", WAIT_CMD_TOV));
904
905 while (!time_after_eq(jiffies, wtime)) {
afaf5a2d
DS		 906 spin_lock_irqsave(&ha->hardware_lock, flags);
907 /* Find a command that hasn't completed. */
908 for (index = 0; index < ha->host->can_queue; index++) {
909 cmd = scsi_host_find_tag(ha->host, index);
a1e0063d
MC		 910 /*
911 * We cannot just check if the index is valid,
912 * becase if we are run from the scsi eh, then
913 * the scsi/block layer is going to prevent
914 * the tag from being released.
915 */
916 if (cmd != NULL && CMD_SP(cmd))
afaf5a2d
DS		 917 break;
918 }
919 spin_unlock_irqrestore(&ha->hardware_lock, flags);
920
921 /* If No Commands are pending, wait is complete */
f4f5df23
VC		 922 if (index == ha->host->can_queue)
923 return QLA_SUCCESS;
afaf5a2d 924
f4f5df23
VC		 925 msleep(1000);
926 }
927 /* If we timed out on waiting for commands to come back
928 * return ERROR. */
929 return QLA_ERROR;
afaf5a2d
DS		 930}
931
f4f5df23 932int qla4xxx_hw_reset(struct scsi_qla_host *ha)
afaf5a2d 933{
afaf5a2d 934 uint32_t ctrl_status;
477ffb9d
DS		 935 unsigned long flags = 0;
936
937 DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
afaf5a2d 938
f4f5df23
VC		 939 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
940 return QLA_ERROR;
941
afaf5a2d
DS		 942 spin_lock_irqsave(&ha->hardware_lock, flags);
943
944 /*
945 * If the SCSI Reset Interrupt bit is set, clear it.
946 * Otherwise, the Soft Reset won't work.
947 */
948 ctrl_status = readw(&ha->reg->ctrl_status);
949 if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
950 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
951
952 /* Issue Soft Reset */
953 writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
954 readl(&ha->reg->ctrl_status);
955
956 spin_unlock_irqrestore(&ha->hardware_lock, flags);
f4f5df23 957 return QLA_SUCCESS;
477ffb9d
DS		 958}
959
960/**
961 * qla4xxx_soft_reset - performs soft reset.
962 * @ha: Pointer to host adapter structure.
963 **/
964int qla4xxx_soft_reset(struct scsi_qla_host *ha)
965{
966 uint32_t max_wait_time;
967 unsigned long flags = 0;
f931c534 968 int status;
477ffb9d
DS		 969 uint32_t ctrl_status;
970
f931c534
VC		 971 status = qla4xxx_hw_reset(ha);
972 if (status != QLA_SUCCESS)
973 return status;
afaf5a2d 974
f931c534 975 status = QLA_ERROR;
afaf5a2d
DS		 976 /* Wait until the Network Reset Intr bit is cleared */
977 max_wait_time = RESET_INTR_TOV;
978 do {
979 spin_lock_irqsave(&ha->hardware_lock, flags);
980 ctrl_status = readw(&ha->reg->ctrl_status);
981 spin_unlock_irqrestore(&ha->hardware_lock, flags);
982
983 if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
984 break;
985
986 msleep(1000);
987 } while ((--max_wait_time));
988
989 if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
990 DEBUG2(printk(KERN_WARNING
991 "scsi%ld: Network Reset Intr not cleared by "
992 "Network function, clearing it now!\n",
993 ha->host_no));
994 spin_lock_irqsave(&ha->hardware_lock, flags);
995 writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
996 readl(&ha->reg->ctrl_status);
997 spin_unlock_irqrestore(&ha->hardware_lock, flags);
998 }
999
1000 /* Wait until the firmware tells us the Soft Reset is done */
1001 max_wait_time = SOFT_RESET_TOV;
1002 do {
1003 spin_lock_irqsave(&ha->hardware_lock, flags);
1004 ctrl_status = readw(&ha->reg->ctrl_status);
1005 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1006
1007 if ((ctrl_status & CSR_SOFT_RESET) == 0) {
1008 status = QLA_SUCCESS;
1009 break;
1010 }
1011
1012 msleep(1000);
1013 } while ((--max_wait_time));
1014
1015 /*
1016 * Also, make sure that the SCSI Reset Interrupt bit has been cleared
1017 * after the soft reset has taken place.
1018 */
1019 spin_lock_irqsave(&ha->hardware_lock, flags);
1020 ctrl_status = readw(&ha->reg->ctrl_status);
1021 if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
1022 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
1023 readl(&ha->reg->ctrl_status);
1024 }
1025 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1026
1027 /* If soft reset fails then most probably the bios on other
1028 * function is also enabled.
1029 * Since the initialization is sequential the other fn
1030 * wont be able to acknowledge the soft reset.
1031 * Issue a force soft reset to workaround this scenario.
1032 */
1033 if (max_wait_time == 0) {
1034 /* Issue Force Soft Reset */
1035 spin_lock_irqsave(&ha->hardware_lock, flags);
1036 writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
1037 readl(&ha->reg->ctrl_status);
1038 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1039 /* Wait until the firmware tells us the Soft Reset is done */
1040 max_wait_time = SOFT_RESET_TOV;
1041 do {
1042 spin_lock_irqsave(&ha->hardware_lock, flags);
1043 ctrl_status = readw(&ha->reg->ctrl_status);
1044 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1045
1046 if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
1047 status = QLA_SUCCESS;
1048 break;
1049 }
1050
1051 msleep(1000);
1052 } while ((--max_wait_time));
1053 }
1054
1055 return status;
1056}
1057
afaf5a2d 1058/**
f4f5df23 1059 * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
afaf5a2d 1060 * @ha: Pointer to host adapter structure.
f4f5df23 1061 * @res: returned scsi status
afaf5a2d
DS		 1062 *
1063 * This routine is called just prior to a HARD RESET to return all
1064 * outstanding commands back to the Operating System.
1065 * Caller should make sure that the following locks are released
1066 * before this calling routine: Hardware lock, and io_request_lock.
1067 **/
f4f5df23 1068static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
afaf5a2d
DS		 1069{
1070 struct srb *srb;
1071 int i;
1072 unsigned long flags;
1073
1074 spin_lock_irqsave(&ha->hardware_lock, flags);
1075 for (i = 0; i < ha->host->can_queue; i++) {
1076 srb = qla4xxx_del_from_active_array(ha, i);
1077 if (srb != NULL) {
f4f5df23 1078 srb->cmd->result = res;
09a0f719 1079 kref_put(&srb->srb_ref, qla4xxx_srb_compl);
afaf5a2d
DS		 1080 }
1081 }
1082 spin_unlock_irqrestore(&ha->hardware_lock, flags);
afaf5a2d
DS		 1083}
1084
f4f5df23
VC		 1085void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
1086{
1087 clear_bit(AF_ONLINE, &ha->flags);
1088
1089 /* Disable the board */
1090 ql4_printk(KERN_INFO, ha, "Disabling the board\n");
f4f5df23
VC		 1091
1092 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
1093 qla4xxx_mark_all_devices_missing(ha);
1094 clear_bit(AF_INIT_DONE, &ha->flags);
1095}
1096
afaf5a2d
DS		 1097/**
1098 * qla4xxx_recover_adapter - recovers adapter after a fatal error
1099 * @ha: Pointer to host adapter structure.
afaf5a2d 1100 **/
f4f5df23 1101static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
afaf5a2d 1102{
f4f5df23
VC		 1103 int status = QLA_ERROR;
1104 uint8_t reset_chip = 0;
afaf5a2d
DS		 1105
1106 /* Stall incoming I/O until we are done */
f4f5df23 1107 scsi_block_requests(ha->host);
afaf5a2d 1108 clear_bit(AF_ONLINE, &ha->flags);
50a29aec 1109
f4f5df23 1110 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
afaf5a2d 1111
f4f5df23 1112 set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
afaf5a2d 1113
f4f5df23
VC		 1114 if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
1115 reset_chip = 1;
afaf5a2d 1116
f4f5df23
VC		 1117 /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
1118 * do not reset adapter, jump to initialize_adapter */
1119 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
1120 status = QLA_SUCCESS;
1121 goto recover_ha_init_adapter;
1122 }
afaf5a2d 1123
f4f5df23
VC		 1124 /* For the ISP-82xx adapter, issue a stop_firmware if invoked
1125 * from eh_host_reset or ioctl module */
1126 if (is_qla8022(ha) && !reset_chip &&
1127 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
1128
1129 DEBUG2(ql4_printk(KERN_INFO, ha,
1130 "scsi%ld: %s - Performing stop_firmware...\n",
1131 ha->host_no, __func__));
1132 status = ha->isp_ops->reset_firmware(ha);
1133 if (status == QLA_SUCCESS) {
2bd1e2be
NJ		 1134 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
1135 qla4xxx_cmd_wait(ha);
f4f5df23
VC		 1136 ha->isp_ops->disable_intrs(ha);
1137 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
1138 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
1139 } else {
1140 /* If the stop_firmware fails then
1141 * reset the entire chip */
1142 reset_chip = 1;
1143 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
1144 set_bit(DPC_RESET_HA, &ha->dpc_flags);
1145 }
1146 }
dca05c4c 1147
f4f5df23
VC		 1148 /* Issue full chip reset if recovering from a catastrophic error,
1149 * or if stop_firmware fails for ISP-82xx.
1150 * This is the default case for ISP-4xxx */
1151 if (!is_qla8022(ha) || reset_chip) {
2bd1e2be
NJ		 1152 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
1153 qla4xxx_cmd_wait(ha);
f4f5df23
VC		 1154 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
1155 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
1156 DEBUG2(ql4_printk(KERN_INFO, ha,
1157 "scsi%ld: %s - Performing chip reset..\n",
1158 ha->host_no, __func__));
1159 status = ha->isp_ops->reset_chip(ha);
1160 }
afaf5a2d
DS		 1161
1162 /* Flush any pending ddb changed AENs */
1163 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
1164
f4f5df23
VC		 1165recover_ha_init_adapter:
1166 /* Upon successful firmware/chip reset, re-initialize the adapter */
afaf5a2d 1167 if (status == QLA_SUCCESS) {
f4f5df23
VC		 1168 /* For ISP-4xxx, force function 1 to always initialize
1169 * before function 3 to prevent both funcions from
1170 * stepping on top of the other */
1171 if (!is_qla8022(ha) && (ha->mac_index == 3))
1172 ssleep(6);
1173
1174 /* NOTE: AF_ONLINE flag set upon successful completion of
1175 * qla4xxx_initialize_adapter */
1176 status = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST);
afaf5a2d
DS		 1177 }
1178
f4f5df23
VC		 1179 /* Retry failed adapter initialization, if necessary
1180 * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
1181 * case to prevent ping-pong resets between functions */
1182 if (!test_bit(AF_ONLINE, &ha->flags) &&
1183 !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
afaf5a2d 1184 /* Adapter initialization failed, see if we can retry
f4f5df23
VC		 1185 * resetting the ha.
1186 * Since we don't want to block the DPC for too long
1187 * with multiple resets in the same thread,
1188 * utilize DPC to retry */
afaf5a2d
DS		 1189 if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
1190 ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
1191 DEBUG2(printk("scsi%ld: recover adapter - retrying "
1192 "(%d) more times\n", ha->host_no,
1193 ha->retry_reset_ha_cnt));
1194 set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
1195 status = QLA_ERROR;
1196 } else {
1197 if (ha->retry_reset_ha_cnt > 0) {
1198 /* Schedule another Reset HA--DPC will retry */
1199 ha->retry_reset_ha_cnt--;
1200 DEBUG2(printk("scsi%ld: recover adapter - "
1201 "retry remaining %d\n",
1202 ha->host_no,
1203 ha->retry_reset_ha_cnt));
1204 status = QLA_ERROR;
1205 }
1206
1207 if (ha->retry_reset_ha_cnt == 0) {
1208 /* Recover adapter retries have been exhausted.
1209 * Adapter DEAD */
1210 DEBUG2(printk("scsi%ld: recover adapter "
1211 "failed - board disabled\n",
1212 ha->host_no));
f4f5df23 1213 qla4xxx_dead_adapter_cleanup(ha);
afaf5a2d
DS		 1214 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
1215 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
f4f5df23 1216 clear_bit(DPC_RESET_HA_FW_CONTEXT,
afaf5a2d
DS		 1217 &ha->dpc_flags);
1218 status = QLA_ERROR;
1219 }
1220 }
1221 } else {
1222 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
f4f5df23 1223 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
afaf5a2d
DS		 1224 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
1225 }
1226
1227 ha->adapter_error_count++;
1228
f4f5df23
VC		 1229 if (test_bit(AF_ONLINE, &ha->flags))
1230 ha->isp_ops->enable_intrs(ha);
1231
1232 scsi_unblock_requests(ha->host);
1233
1234 clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
1235 DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
25985edc 1236 status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
afaf5a2d 1237
afaf5a2d
DS		 1238 return status;
1239}
1240
2d7924e6
VC		 1241static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
1242{
1243 struct ddb_entry *ddb_entry, *dtemp;
1244
1245 list_for_each_entry_safe(ddb_entry, dtemp, &ha->ddb_list, list) {
1246 if ((atomic_read(&ddb_entry->state) == DDB_STATE_MISSING) ||
1247 (atomic_read(&ddb_entry->state) == DDB_STATE_DEAD)) {
1248 if (ddb_entry->fw_ddb_device_state ==
1249 DDB_DS_SESSION_ACTIVE) {
1250 atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
1251 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
1252 " marked ONLINE\n", ha->host_no, __func__,
1253 ddb_entry->fw_ddb_index);
1254
1255 iscsi_unblock_session(ddb_entry->sess);
1256 } else
1257 qla4xxx_relogin_device(ha, ddb_entry);
1258 }
1259 }
1260}
1261
f4f5df23
VC		 1262void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
1263{
1264 if (ha->dpc_thread &&
1265 !test_bit(AF_DPC_SCHEDULED, &ha->flags)) {
1266 set_bit(AF_DPC_SCHEDULED, &ha->flags);
1267 queue_work(ha->dpc_thread, &ha->dpc_work);
1268 }
1269}
1270
afaf5a2d
DS		 1271/**
1272 * qla4xxx_do_dpc - dpc routine
1273 * @data: in our case pointer to adapter structure
1274 *
1275 * This routine is a task that is schedule by the interrupt handler
1276 * to perform the background processing for interrupts. We put it
1277 * on a task queue that is consumed whenever the scheduler runs; that's
1278 * so you can do anything (i.e. put the process to sleep etc). In fact,
1279 * the mid-level tries to sleep when it reaches the driver threshold
1280 * "host->can_queue". This can cause a panic if we were in our interrupt code.
1281 **/
c4028958 1282static void qla4xxx_do_dpc(struct work_struct *work)
afaf5a2d 1283{
c4028958
DH		 1284 struct scsi_qla_host *ha =
1285 container_of(work, struct scsi_qla_host, dpc_work);
afaf5a2d 1286 struct ddb_entry *ddb_entry, *dtemp;
477ffb9d 1287 int status = QLA_ERROR;
afaf5a2d 1288
f26b9044 1289 DEBUG2(printk("scsi%ld: %s: DPC handler waking up."
f4f5df23
VC		 1290 "flags = 0x%08lx, dpc_flags = 0x%08lx\n",
1291 ha->host_no, __func__, ha->flags, ha->dpc_flags))
afaf5a2d
DS		 1292
1293 /* Initialization not yet finished. Don't do anything yet. */
1294 if (!test_bit(AF_INIT_DONE, &ha->flags))
0753b487 1295 goto do_dpc_exit;
afaf5a2d 1296
2232be0d
LC		 1297 if (test_bit(AF_EEH_BUSY, &ha->flags)) {
1298 DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
1299 ha->host_no, __func__, ha->flags));
1300 goto do_dpc_exit;
1301 }
1302
f4f5df23
VC		 1303 if (is_qla8022(ha)) {
1304 if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
1305 qla4_8xxx_idc_lock(ha);
1306 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
1307 QLA82XX_DEV_FAILED);
1308 qla4_8xxx_idc_unlock(ha);
1309 ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
1310 qla4_8xxx_device_state_handler(ha);
1311 }
1312 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
1313 qla4_8xxx_need_qsnt_handler(ha);
1314 }
1315 }
1316
1317 if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
1318 (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
afaf5a2d 1319 test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
f4f5df23
VC		 1320 test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
1321 if (ql4xdontresethba) {
1322 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
1323 ha->host_no, __func__));
1324 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
1325 clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
1326 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
1327 goto dpc_post_reset_ha;
1328 }
1329 if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
1330 test_bit(DPC_RESET_HA, &ha->dpc_flags))
1331 qla4xxx_recover_adapter(ha);
afaf5a2d 1332
477ffb9d 1333 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
afaf5a2d 1334 uint8_t wait_time = RESET_INTR_TOV;
afaf5a2d 1335
afaf5a2d
DS		 1336 while ((readw(&ha->reg->ctrl_status) &
1337 (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
1338 if (--wait_time == 0)
1339 break;
afaf5a2d 1340 msleep(1000);
afaf5a2d 1341 }
afaf5a2d
DS		 1342 if (wait_time == 0)
1343 DEBUG2(printk("scsi%ld: %s: SR|FSR "
1344 "bit not cleared-- resetting\n",
1345 ha->host_no, __func__));
f4f5df23 1346 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
477ffb9d
DS		 1347 if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
1348 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
f4f5df23 1349 status = qla4xxx_recover_adapter(ha);
477ffb9d
DS		 1350 }
1351 clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
1352 if (status == QLA_SUCCESS)
f4f5df23 1353 ha->isp_ops->enable_intrs(ha);
afaf5a2d
DS		 1354 }
1355 }
1356
f4f5df23 1357dpc_post_reset_ha:
afaf5a2d
DS		 1358 /* ---- process AEN? --- */
1359 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
1360 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
1361
1362 /* ---- Get DHCP IP Address? --- */
1363 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
1364 qla4xxx_get_dhcp_ip_address(ha);
1365
065aa1b4
VC		 1366 /* ---- link change? --- */
1367 if (test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
1368 if (!test_bit(AF_LINK_UP, &ha->flags)) {
1369 /* ---- link down? --- */
2d7924e6 1370 qla4xxx_mark_all_devices_missing(ha);
065aa1b4
VC		 1371 } else {
1372 /* ---- link up? --- *
1373 * F/W will auto login to all devices ONLY ONCE after
1374 * link up during driver initialization and runtime
1375 * fatal error recovery. Therefore, the driver must
1376 * manually relogin to devices when recovering from
1377 * connection failures, logouts, expired KATO, etc. */
1378
2d7924e6 1379 qla4xxx_relogin_all_devices(ha);
065aa1b4
VC		 1380 }
1381 }
1382
afaf5a2d
DS		 1383 /* ---- relogin device? --- */
1384 if (adapter_up(ha) &&
1385 test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
1386 list_for_each_entry_safe(ddb_entry, dtemp,
1387 &ha->ddb_list, list) {
1388 if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
1389 atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE)
1390 qla4xxx_relogin_device(ha, ddb_entry);
1391
1392 /*
1393 * If mbx cmd times out there is no point
1394 * in continuing further.
1395 * With large no of targets this can hang
1396 * the system.
1397 */
1398 if (test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
1399 printk(KERN_WARNING "scsi%ld: %s: "
1400 "need to reset hba\n",
1401 ha->host_no, __func__);
1402 break;
1403 }
1404 }
1405 }
0753b487
VC		 1406
1407do_dpc_exit:
f4f5df23 1408 clear_bit(AF_DPC_SCHEDULED, &ha->flags);
afaf5a2d
DS		 1409}
1410
1411/**
1412 * qla4xxx_free_adapter - release the adapter
1413 * @ha: pointer to adapter structure
1414 **/
1415static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
1416{
1417
1418 if (test_bit(AF_INTERRUPTS_ON, &ha->flags)) {
1419 /* Turn-off interrupts on the card. */
f4f5df23 1420 ha->isp_ops->disable_intrs(ha);
afaf5a2d
DS		 1421 }
1422
f4f5df23
VC		 1423 /* Remove timer thread, if present */
1424 if (ha->timer_active)
1425 qla4xxx_stop_timer(ha);
1426
afaf5a2d
DS		 1427 /* Kill the kernel thread for this host */
1428 if (ha->dpc_thread)
1429 destroy_workqueue(ha->dpc_thread);
1430
f4f5df23
VC		 1431 /* Put firmware in known state */
1432 ha->isp_ops->reset_firmware(ha);
afaf5a2d 1433
f4f5df23
VC		 1434 if (is_qla8022(ha)) {
1435 qla4_8xxx_idc_lock(ha);
1436 qla4_8xxx_clear_drv_active(ha);
1437 qla4_8xxx_idc_unlock(ha);
1438 }
afaf5a2d 1439
afaf5a2d
DS		 1440 /* Detach interrupts */
1441 if (test_and_clear_bit(AF_IRQ_ATTACHED, &ha->flags))
f4f5df23 1442 qla4xxx_free_irqs(ha);
afaf5a2d 1443
bee4fe8e
DS		 1444 /* free extra memory */
1445 qla4xxx_mem_free(ha);
f4f5df23
VC		 1446}
1447
1448int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
1449{
1450 int status = 0;
1451 uint8_t revision_id;
1452 unsigned long mem_base, mem_len, db_base, db_len;
1453 struct pci_dev *pdev = ha->pdev;
1454
1455 status = pci_request_regions(pdev, DRIVER_NAME);
1456 if (status) {
1457 printk(KERN_WARNING
1458 "scsi(%ld) Failed to reserve PIO regions (%s) "
1459 "status=%d\n", ha->host_no, pci_name(pdev), status);
1460 goto iospace_error_exit;
1461 }
1462
1463 pci_read_config_byte(pdev, PCI_REVISION_ID, &revision_id);
1464 DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
1465 __func__, revision_id));
1466 ha->revision_id = revision_id;
bee4fe8e 1467
f4f5df23
VC		 1468 /* remap phys address */
1469 mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
1470 mem_len = pci_resource_len(pdev, 0);
1471 DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
1472 __func__, mem_base, mem_len));
afaf5a2d 1473
f4f5df23
VC		 1474 /* mapping of pcibase pointer */
1475 ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
1476 if (!ha->nx_pcibase) {
1477 printk(KERN_ERR
1478 "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
1479 pci_release_regions(ha->pdev);
1480 goto iospace_error_exit;
1481 }
1482
1483 /* Mapping of IO base pointer, door bell read and write pointer */
1484
1485 /* mapping of IO base pointer */
1486 ha->qla4_8xxx_reg =
1487 (struct device_reg_82xx __iomem *)((uint8_t *)ha->nx_pcibase +
1488 0xbc000 + (ha->pdev->devfn << 11));
1489
1490 db_base = pci_resource_start(pdev, 4); /* doorbell is on bar 4 */
1491 db_len = pci_resource_len(pdev, 4);
1492
2657c800
SS		 1493 ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
1494 QLA82XX_CAM_RAM_DB2);
f4f5df23 1495
2657c800 1496 return 0;
f4f5df23
VC		 1497iospace_error_exit:
1498 return -ENOMEM;
afaf5a2d
DS		 1499}
1500
1501/***
1502 * qla4xxx_iospace_config - maps registers
1503 * @ha: pointer to adapter structure
1504 *
1505 * This routines maps HBA's registers from the pci address space
1506 * into the kernel virtual address space for memory mapped i/o.
1507 **/
f4f5df23 1508int qla4xxx_iospace_config(struct scsi_qla_host *ha)
afaf5a2d
DS		 1509{
1510 unsigned long pio, pio_len, pio_flags;
1511 unsigned long mmio, mmio_len, mmio_flags;
1512
1513 pio = pci_resource_start(ha->pdev, 0);
1514 pio_len = pci_resource_len(ha->pdev, 0);
1515 pio_flags = pci_resource_flags(ha->pdev, 0);
1516 if (pio_flags & IORESOURCE_IO) {
1517 if (pio_len < MIN_IOBASE_LEN) {
c2660df3 1518 ql4_printk(KERN_WARNING, ha,
afaf5a2d
DS		 1519 "Invalid PCI I/O region size\n");
1520 pio = 0;
1521 }
1522 } else {
c2660df3 1523 ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
afaf5a2d
DS		 1524 pio = 0;
1525 }
1526
1527 /* Use MMIO operations for all accesses. */
1528 mmio = pci_resource_start(ha->pdev, 1);
1529 mmio_len = pci_resource_len(ha->pdev, 1);
1530 mmio_flags = pci_resource_flags(ha->pdev, 1);
1531
1532 if (!(mmio_flags & IORESOURCE_MEM)) {
c2660df3
VC		 1533 ql4_printk(KERN_ERR, ha,
1534 "region #0 not an MMIO resource, aborting\n");
afaf5a2d
DS		 1535
1536 goto iospace_error_exit;
1537 }
c2660df3 1538
afaf5a2d 1539 if (mmio_len < MIN_IOBASE_LEN) {
c2660df3
VC		 1540 ql4_printk(KERN_ERR, ha,
1541 "Invalid PCI mem region size, aborting\n");
afaf5a2d
DS		 1542 goto iospace_error_exit;
1543 }
1544
1545 if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
c2660df3
VC		 1546 ql4_printk(KERN_WARNING, ha,
1547 "Failed to reserve PIO/MMIO regions\n");
afaf5a2d
DS		 1548
1549 goto iospace_error_exit;
1550 }
1551
1552 ha->pio_address = pio;
1553 ha->pio_length = pio_len;
1554 ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
1555 if (!ha->reg) {
c2660df3
VC		 1556 ql4_printk(KERN_ERR, ha,
1557 "cannot remap MMIO, aborting\n");
afaf5a2d
DS		 1558
1559 goto iospace_error_exit;
1560 }
1561
1562 return 0;
1563
1564iospace_error_exit:
1565 return -ENOMEM;
1566}
1567
f4f5df23
VC		 1568static struct isp_operations qla4xxx_isp_ops = {
1569 .iospace_config = qla4xxx_iospace_config,
1570 .pci_config = qla4xxx_pci_config,
1571 .disable_intrs = qla4xxx_disable_intrs,
1572 .enable_intrs = qla4xxx_enable_intrs,
1573 .start_firmware = qla4xxx_start_firmware,
1574 .intr_handler = qla4xxx_intr_handler,
1575 .interrupt_service_routine = qla4xxx_interrupt_service_routine,
1576 .reset_chip = qla4xxx_soft_reset,
1577 .reset_firmware = qla4xxx_hw_reset,
1578 .queue_iocb = qla4xxx_queue_iocb,
1579 .complete_iocb = qla4xxx_complete_iocb,
1580 .rd_shdw_req_q_out = qla4xxx_rd_shdw_req_q_out,
1581 .rd_shdw_rsp_q_in = qla4xxx_rd_shdw_rsp_q_in,
1582 .get_sys_info = qla4xxx_get_sys_info,
1583};
1584
1585static struct isp_operations qla4_8xxx_isp_ops = {
1586 .iospace_config = qla4_8xxx_iospace_config,
1587 .pci_config = qla4_8xxx_pci_config,
1588 .disable_intrs = qla4_8xxx_disable_intrs,
1589 .enable_intrs = qla4_8xxx_enable_intrs,
1590 .start_firmware = qla4_8xxx_load_risc,
1591 .intr_handler = qla4_8xxx_intr_handler,
1592 .interrupt_service_routine = qla4_8xxx_interrupt_service_routine,
1593 .reset_chip = qla4_8xxx_isp_reset,
1594 .reset_firmware = qla4_8xxx_stop_firmware,
1595 .queue_iocb = qla4_8xxx_queue_iocb,
1596 .complete_iocb = qla4_8xxx_complete_iocb,
1597 .rd_shdw_req_q_out = qla4_8xxx_rd_shdw_req_q_out,
1598 .rd_shdw_rsp_q_in = qla4_8xxx_rd_shdw_rsp_q_in,
1599 .get_sys_info = qla4_8xxx_get_sys_info,
1600};
1601
1602uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
1603{
1604 return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
1605}
1606
1607uint16_t qla4_8xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
1608{
1609 return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->req_q_out));
1610}
1611
1612uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
1613{
1614 return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
1615}
1616
1617uint16_t qla4_8xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
1618{
1619 return (uint16_t)le32_to_cpu(readl(&ha->qla4_8xxx_reg->rsp_q_in));
1620}
1621
afaf5a2d
DS		 1622/**
1623 * qla4xxx_probe_adapter - callback function to probe HBA
1624 * @pdev: pointer to pci_dev structure
1625 * @pci_device_id: pointer to pci_device entry
1626 *
1627 * This routine will probe for Qlogic 4xxx iSCSI host adapters.
1628 * It returns zero if successful. It also initializes all data necessary for
1629 * the driver.
1630 **/
1631static int __devinit qla4xxx_probe_adapter(struct pci_dev *pdev,
1632 const struct pci_device_id *ent)
1633{
1634 int ret = -ENODEV, status;
1635 struct Scsi_Host *host;
1636 struct scsi_qla_host *ha;
afaf5a2d
DS		 1637 uint8_t init_retry_count = 0;
1638 char buf[34];
f4f5df23 1639 struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
f9880e76 1640 uint32_t dev_state;
afaf5a2d
DS		 1641
1642 if (pci_enable_device(pdev))
1643 return -1;
1644
1645 host = scsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha));
1646 if (host == NULL) {
1647 printk(KERN_WARNING
1648 "qla4xxx: Couldn't allocate host from scsi layer!\n");
1649 goto probe_disable_device;
1650 }
1651
1652 /* Clear our data area */
1653 ha = (struct scsi_qla_host *) host->hostdata;
1654 memset(ha, 0, sizeof(*ha));
1655
1656 /* Save the information from PCI BIOS. */
1657 ha->pdev = pdev;
1658 ha->host = host;
1659 ha->host_no = host->host_no;
1660
2232be0d
LC		 1661 pci_enable_pcie_error_reporting(pdev);
1662
f4f5df23
VC		 1663 /* Setup Runtime configurable options */
1664 if (is_qla8022(ha)) {
1665 ha->isp_ops = &qla4_8xxx_isp_ops;
1666 rwlock_init(&ha->hw_lock);
1667 ha->qdr_sn_window = -1;
1668 ha->ddr_mn_window = -1;
1669 ha->curr_window = 255;
1670 ha->func_num = PCI_FUNC(ha->pdev->devfn);
1671 nx_legacy_intr = &legacy_intr[ha->func_num];
1672 ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
1673 ha->nx_legacy_intr.tgt_status_reg =
1674 nx_legacy_intr->tgt_status_reg;
1675 ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
1676 ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
1677 } else {
1678 ha->isp_ops = &qla4xxx_isp_ops;
1679 }
1680
2232be0d
LC		 1681 /* Set EEH reset type to fundamental if required by hba */
1682 if (is_qla8022(ha))
1683 pdev->needs_freset = 1;
1684
afaf5a2d 1685 /* Configure PCI I/O space. */
f4f5df23 1686 ret = ha->isp_ops->iospace_config(ha);
afaf5a2d 1687 if (ret)
f4f5df23 1688 goto probe_failed_ioconfig;
afaf5a2d 1689
c2660df3 1690 ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
afaf5a2d
DS		 1691 pdev->device, pdev->irq, ha->reg);
1692
1693 qla4xxx_config_dma_addressing(ha);
1694
1695 /* Initialize lists and spinlocks. */
1696 INIT_LIST_HEAD(&ha->ddb_list);
1697 INIT_LIST_HEAD(&ha->free_srb_q);
1698
1699 mutex_init(&ha->mbox_sem);
f4f5df23 1700 init_completion(&ha->mbx_intr_comp);
afaf5a2d
DS		 1701
1702 spin_lock_init(&ha->hardware_lock);
afaf5a2d
DS		 1703
1704 /* Allocate dma buffers */
1705 if (qla4xxx_mem_alloc(ha)) {
c2660df3
VC		 1706 ql4_printk(KERN_WARNING, ha,
1707 "[ERROR] Failed to allocate memory for adapter\n");
afaf5a2d
DS		 1708
1709 ret = -ENOMEM;
1710 goto probe_failed;
1711 }
1712
f4f5df23
VC		 1713 if (is_qla8022(ha))
1714 (void) qla4_8xxx_get_flash_info(ha);
1715
afaf5a2d
DS		 1716 /*
1717 * Initialize the Host adapter request/response queues and
1718 * firmware
1719 * NOTE: interrupts enabled upon successful completion
1720 */
1721 status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST);
f4f5df23
VC		 1722 while ((!test_bit(AF_ONLINE, &ha->flags)) &&
1723 init_retry_count++ < MAX_INIT_RETRIES) {
f9880e76
PM		 1724
1725 if (is_qla8022(ha)) {
1726 qla4_8xxx_idc_lock(ha);
1727 dev_state = qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE);
1728 qla4_8xxx_idc_unlock(ha);
1729 if (dev_state == QLA82XX_DEV_FAILED) {
1730 ql4_printk(KERN_WARNING, ha, "%s: don't retry "
1731 "initialize adapter. H/W is in failed state\n",
1732 __func__);
1733 break;
1734 }
1735 }
afaf5a2d
DS		 1736 DEBUG2(printk("scsi: %s: retrying adapter initialization "
1737 "(%d)\n", __func__, init_retry_count));
f4f5df23
VC		 1738
1739 if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
1740 continue;
1741
afaf5a2d
DS		 1742 status = qla4xxx_initialize_adapter(ha, REBUILD_DDB_LIST);
1743 }
f4f5df23
VC		 1744
1745 if (!test_bit(AF_ONLINE, &ha->flags)) {
c2660df3 1746 ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
afaf5a2d 1747
fe998527
LC		 1748 if (is_qla8022(ha) && ql4xdontresethba) {
1749 /* Put the device in failed state. */
1750 DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
1751 qla4_8xxx_idc_lock(ha);
1752 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
1753 QLA82XX_DEV_FAILED);
1754 qla4_8xxx_idc_unlock(ha);
1755 }
afaf5a2d
DS		 1756 ret = -ENODEV;
1757 goto probe_failed;
1758 }
1759
1760 host->cmd_per_lun = 3;
1761 host->max_channel = 0;
1762 host->max_lun = MAX_LUNS - 1;
1763 host->max_id = MAX_TARGETS;
1764 host->max_cmd_len = IOCB_MAX_CDB_LEN;
1765 host->can_queue = MAX_SRBS ;
1766 host->transportt = qla4xxx_scsi_transport;
1767
1768 ret = scsi_init_shared_tag_map(host, MAX_SRBS);
1769 if (ret) {
c2660df3
VC		 1770 ql4_printk(KERN_WARNING, ha,
1771 "scsi_init_shared_tag_map failed\n");
1772 goto probe_failed;
afaf5a2d
DS		 1773 }
1774
1775 /* Startup the kernel thread for this host adapter. */
1776 DEBUG2(printk("scsi: %s: Starting kernel thread for "
1777 "qla4xxx_dpc\n", __func__));
1778 sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
1779 ha->dpc_thread = create_singlethread_workqueue(buf);
1780 if (!ha->dpc_thread) {
c2660df3 1781 ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
afaf5a2d
DS		 1782 ret = -ENODEV;
1783 goto probe_failed;
1784 }
c4028958 1785 INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
afaf5a2d 1786
f4f5df23
VC		 1787 /* For ISP-82XX, request_irqs is called in qla4_8xxx_load_risc
1788 * (which is called indirectly by qla4xxx_initialize_adapter),
1789 * so that irqs will be registered after crbinit but before
1790 * mbx_intr_enable.
1791 */
1792 if (!is_qla8022(ha)) {
1793 ret = qla4xxx_request_irqs(ha);
1794 if (ret) {
1795 ql4_printk(KERN_WARNING, ha, "Failed to reserve "
1796 "interrupt %d already in use.\n", pdev->irq);
1797 goto probe_failed;
1798 }
afaf5a2d 1799 }
afaf5a2d 1800
2232be0d 1801 pci_save_state(ha->pdev);
f4f5df23 1802 ha->isp_ops->enable_intrs(ha);
afaf5a2d
DS		 1803
1804 /* Start timer thread. */
1805 qla4xxx_start_timer(ha, qla4xxx_timer, 1);
1806
1807 set_bit(AF_INIT_DONE, &ha->flags);
1808
1809 pci_set_drvdata(pdev, ha);
1810
1811 ret = scsi_add_host(host, &pdev->dev);
1812 if (ret)
1813 goto probe_failed;
1814
afaf5a2d
DS		 1815 printk(KERN_INFO
1816 " QLogic iSCSI HBA Driver version: %s\n"
1817 " QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
1818 qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
1819 ha->host_no, ha->firmware_version[0], ha->firmware_version[1],
1820 ha->patch_number, ha->build_number);
921601b7 1821 scsi_scan_host(host);
afaf5a2d
DS		 1822 return 0;
1823
afaf5a2d
DS		 1824probe_failed:
1825 qla4xxx_free_adapter(ha);
f4f5df23
VC		 1826
1827probe_failed_ioconfig:
2232be0d 1828 pci_disable_pcie_error_reporting(pdev);
afaf5a2d
DS		 1829 scsi_host_put(ha->host);
1830
1831probe_disable_device:
1832 pci_disable_device(pdev);
1833
1834 return ret;
1835}
1836
7eece5a0
KH		 1837/**
1838 * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
1839 * @ha: pointer to adapter structure
1840 *
1841 * Mark the other ISP-4xxx port to indicate that the driver is being removed,
1842 * so that the other port will not re-initialize while in the process of
1843 * removing the ha due to driver unload or hba hotplug.
1844 **/
1845static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
1846{
1847 struct scsi_qla_host *other_ha = NULL;
1848 struct pci_dev *other_pdev = NULL;
1849 int fn = ISP4XXX_PCI_FN_2;
1850
1851 /*iscsi function numbers for ISP4xxx is 1 and 3*/
1852 if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
1853 fn = ISP4XXX_PCI_FN_1;
1854
1855 other_pdev =
1856 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
1857 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
1858 fn));
1859
1860 /* Get other_ha if other_pdev is valid and state is enable*/
1861 if (other_pdev) {
1862 if (atomic_read(&other_pdev->enable_cnt)) {
1863 other_ha = pci_get_drvdata(other_pdev);
1864 if (other_ha) {
1865 set_bit(AF_HA_REMOVAL, &other_ha->flags);
1866 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
1867 "Prevent %s reinit\n", __func__,
1868 dev_name(&other_ha->pdev->dev)));
1869 }
1870 }
1871 pci_dev_put(other_pdev);
1872 }
1873}
1874
afaf5a2d
DS		 1875/**
1876 * qla4xxx_remove_adapter - calback function to remove adapter.
1877 * @pci_dev: PCI device pointer
1878 **/
1879static void __devexit qla4xxx_remove_adapter(struct pci_dev *pdev)
1880{
1881 struct scsi_qla_host *ha;
1882
1883 ha = pci_get_drvdata(pdev);
1884
7eece5a0
KH		 1885 if (!is_qla8022(ha))
1886 qla4xxx_prevent_other_port_reinit(ha);
bee4fe8e 1887
afaf5a2d
DS		 1888 /* remove devs from iscsi_sessions to scsi_devices */
1889 qla4xxx_free_ddb_list(ha);
1890
1891 scsi_remove_host(ha->host);
1892
1893 qla4xxx_free_adapter(ha);
1894
1895 scsi_host_put(ha->host);
1896
2232be0d 1897 pci_disable_pcie_error_reporting(pdev);
f4f5df23 1898 pci_disable_device(pdev);
afaf5a2d
DS		 1899 pci_set_drvdata(pdev, NULL);
1900}
1901
1902/**
1903 * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
1904 * @ha: HA context
1905 *
1906 * At exit, the @ha's flags.enable_64bit_addressing set to indicated
1907 * supported addressing method.
1908 */
47975477 1909static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
afaf5a2d
DS		 1910{
1911 int retval;
1912
1913 /* Update our PCI device dma_mask for full 64 bit mask */
6a35528a
YH		 1914 if (pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(64)) == 0) {
1915 if (pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
afaf5a2d
DS		 1916 dev_dbg(&ha->pdev->dev,
1917 "Failed to set 64 bit PCI consistent mask; "
1918 "using 32 bit.\n");
1919 retval = pci_set_consistent_dma_mask(ha->pdev,
284901a9 1920 DMA_BIT_MASK(32));
afaf5a2d
DS		 1921 }
1922 } else
284901a9 1923 retval = pci_set_dma_mask(ha->pdev, DMA_BIT_MASK(32));
afaf5a2d
DS		 1924}
1925
1926static int qla4xxx_slave_alloc(struct scsi_device *sdev)
1927{
1928 struct iscsi_cls_session *sess = starget_to_session(sdev->sdev_target);
1929 struct ddb_entry *ddb = sess->dd_data;
8bb4033d 1930 int queue_depth = QL4_DEF_QDEPTH;
afaf5a2d
DS		 1931
1932 sdev->hostdata = ddb;
1933 sdev->tagged_supported = 1;
8bb4033d
VC		 1934
1935 if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
1936 queue_depth = ql4xmaxqdepth;
1937
1938 scsi_activate_tcq(sdev, queue_depth);
afaf5a2d
DS		 1939 return 0;
1940}
1941
1942static int qla4xxx_slave_configure(struct scsi_device *sdev)
1943{
1944 sdev->tagged_supported = 1;
1945 return 0;
1946}
1947
1948static void qla4xxx_slave_destroy(struct scsi_device *sdev)
1949{
1950 scsi_deactivate_tcq(sdev, 1);
1951}
1952
1953/**
1954 * qla4xxx_del_from_active_array - returns an active srb
1955 * @ha: Pointer to host adapter structure.
fd589a8f 1956 * @index: index into the active_array
afaf5a2d
DS		 1957 *
1958 * This routine removes and returns the srb at the specified index
1959 **/
f4f5df23
VC		 1960struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
1961 uint32_t index)
afaf5a2d
DS		 1962{
1963 struct srb *srb = NULL;
5369887a 1964 struct scsi_cmnd *cmd = NULL;
afaf5a2d 1965
5369887a
VC		 1966 cmd = scsi_host_find_tag(ha->host, index);
1967 if (!cmd)
afaf5a2d
DS		 1968 return srb;
1969
5369887a
VC		 1970 srb = (struct srb *)CMD_SP(cmd);
1971 if (!srb)
afaf5a2d
DS		 1972 return srb;
1973
1974 /* update counters */
1975 if (srb->flags & SRB_DMA_VALID) {
1976 ha->req_q_count += srb->iocb_cnt;
1977 ha->iocb_cnt -= srb->iocb_cnt;
1978 if (srb->cmd)
5369887a
VC		 1979 srb->cmd->host_scribble =
1980 (unsigned char *)(unsigned long) MAX_SRBS;
afaf5a2d
DS		 1981 }
1982 return srb;
1983}
1984
afaf5a2d
DS		 1985/**
1986 * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
09a0f719 1987 * @ha: Pointer to host adapter structure.
afaf5a2d
DS		 1988 * @cmd: Scsi Command to wait on.
1989 *
1990 * This routine waits for the command to be returned by the Firmware
1991 * for some max time.
1992 **/
1993static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
1994 struct scsi_cmnd *cmd)
1995{
1996 int done = 0;
1997 struct srb *rp;
1998 uint32_t max_wait_time = EH_WAIT_CMD_TOV;
2232be0d
LC		 1999 int ret = SUCCESS;
2000
2001 /* Dont wait on command if PCI error is being handled
2002 * by PCI AER driver
2003 */
2004 if (unlikely(pci_channel_offline(ha->pdev)) ||
2005 (test_bit(AF_EEH_BUSY, &ha->flags))) {
2006 ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
2007 ha->host_no, __func__);
2008 return ret;
2009 }
afaf5a2d
DS		 2010
2011 do {
2012 /* Checking to see if its returned to OS */
5369887a 2013 rp = (struct srb *) CMD_SP(cmd);
afaf5a2d
DS		 2014 if (rp == NULL) {
2015 done++;
2016 break;
2017 }
2018
2019 msleep(2000);
2020 } while (max_wait_time--);
2021
2022 return done;
2023}
2024
2025/**
2026 * qla4xxx_wait_for_hba_online - waits for HBA to come online
2027 * @ha: Pointer to host adapter structure
2028 **/
2029static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
2030{
2031 unsigned long wait_online;
2032
f581a3f7 2033 wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
afaf5a2d
DS		 2034 while (time_before(jiffies, wait_online)) {
2035
2036 if (adapter_up(ha))
2037 return QLA_SUCCESS;
afaf5a2d
DS		 2038
2039 msleep(2000);
2040 }
2041
2042 return QLA_ERROR;
2043}
2044
2045/**
ce545039 2046 * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
fd589a8f 2047 * @ha: pointer to HBA
afaf5a2d
DS		 2048 * @t: target id
2049 * @l: lun id
2050 *
2051 * This function waits for all outstanding commands to a lun to complete. It
2052 * returns 0 if all pending commands are returned and 1 otherwise.
2053 **/
ce545039
MC		 2054static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
2055 struct scsi_target *stgt,
2056 struct scsi_device *sdev)
afaf5a2d
DS		 2057{
2058 int cnt;
2059 int status = 0;
2060 struct scsi_cmnd *cmd;
2061
2062 /*
ce545039
MC		 2063 * Waiting for all commands for the designated target or dev
2064 * in the active array
afaf5a2d
DS		 2065 */
2066 for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
2067 cmd = scsi_host_find_tag(ha->host, cnt);
ce545039
MC		 2068 if (cmd && stgt == scsi_target(cmd->device) &&
2069 (!sdev || sdev == cmd->device)) {
afaf5a2d
DS		 2070 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
2071 status++;
2072 break;
2073 }
2074 }
2075 }
2076 return status;
2077}
2078
09a0f719
VC		 2079/**
2080 * qla4xxx_eh_abort - callback for abort task.
2081 * @cmd: Pointer to Linux's SCSI command structure
2082 *
2083 * This routine is called by the Linux OS to abort the specified
2084 * command.
2085 **/
2086static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
2087{
2088 struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
2089 unsigned int id = cmd->device->id;
2090 unsigned int lun = cmd->device->lun;
92b3e5bb 2091 unsigned long flags;
09a0f719
VC		 2092 struct srb *srb = NULL;
2093 int ret = SUCCESS;
2094 int wait = 0;
2095
c2660df3 2096 ql4_printk(KERN_INFO, ha,
5cd049a5
CH		 2097 "scsi%ld:%d:%d: Abort command issued cmd=%p\n",
2098 ha->host_no, id, lun, cmd);
09a0f719 2099
92b3e5bb 2100 spin_lock_irqsave(&ha->hardware_lock, flags);
09a0f719 2101 srb = (struct srb *) CMD_SP(cmd);
92b3e5bb
MC		 2102 if (!srb) {
2103 spin_unlock_irqrestore(&ha->hardware_lock, flags);
09a0f719 2104 return SUCCESS;
92b3e5bb 2105 }
09a0f719 2106 kref_get(&srb->srb_ref);
92b3e5bb 2107 spin_unlock_irqrestore(&ha->hardware_lock, flags);
09a0f719
VC		 2108
2109 if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
2110 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx failed.\n",
2111 ha->host_no, id, lun));
2112 ret = FAILED;
2113 } else {
2114 DEBUG3(printk("scsi%ld:%d:%d: Abort_task mbx success.\n",
2115 ha->host_no, id, lun));
2116 wait = 1;
2117 }
2118
2119 kref_put(&srb->srb_ref, qla4xxx_srb_compl);
2120
2121 /* Wait for command to complete */
2122 if (wait) {
2123 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
2124 DEBUG2(printk("scsi%ld:%d:%d: Abort handler timed out\n",
2125 ha->host_no, id, lun));
2126 ret = FAILED;
2127 }
2128 }
2129
c2660df3 2130 ql4_printk(KERN_INFO, ha,
09a0f719 2131 "scsi%ld:%d:%d: Abort command - %s\n",
25985edc 2132 ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
09a0f719
VC		 2133
2134 return ret;
2135}
2136
afaf5a2d
DS		 2137/**
2138 * qla4xxx_eh_device_reset - callback for target reset.
2139 * @cmd: Pointer to Linux's SCSI command structure
2140 *
2141 * This routine is called by the Linux OS to reset all luns on the
2142 * specified target.
2143 **/
2144static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
2145{
2146 struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
2147 struct ddb_entry *ddb_entry = cmd->device->hostdata;
afaf5a2d
DS		 2148 int ret = FAILED, stat;
2149
612f7348 2150 if (!ddb_entry)
afaf5a2d
DS		 2151 return ret;
2152
c01be6dc
MC		 2153 ret = iscsi_block_scsi_eh(cmd);
2154 if (ret)
2155 return ret;
2156 ret = FAILED;
2157
c2660df3 2158 ql4_printk(KERN_INFO, ha,
afaf5a2d
DS		 2159 "scsi%ld:%d:%d:%d: DEVICE RESET ISSUED.\n", ha->host_no,
2160 cmd->device->channel, cmd->device->id, cmd->device->lun);
2161
2162 DEBUG2(printk(KERN_INFO
2163 "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
2164 "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
242f9dcb 2165 cmd, jiffies, cmd->request->timeout / HZ,
afaf5a2d
DS		 2166 ha->dpc_flags, cmd->result, cmd->allowed));
2167
2168 /* FIXME: wait for hba to go online */
2169 stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
2170 if (stat != QLA_SUCCESS) {
c2660df3 2171 ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
afaf5a2d
DS		 2172 goto eh_dev_reset_done;
2173 }
2174
ce545039
MC		 2175 if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
2176 cmd->device)) {
c2660df3 2177 ql4_printk(KERN_INFO, ha,
ce545039
MC		 2178 "DEVICE RESET FAILED - waiting for "
2179 "commands.\n");
2180 goto eh_dev_reset_done;
afaf5a2d
DS		 2181 }
2182
9d562913
DS		 2183 /* Send marker. */
2184 if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
2185 MM_LUN_RESET) != QLA_SUCCESS)
2186 goto eh_dev_reset_done;
2187
c2660df3 2188 ql4_printk(KERN_INFO, ha,
afaf5a2d
DS		 2189 "scsi(%ld:%d:%d:%d): DEVICE RESET SUCCEEDED.\n",
2190 ha->host_no, cmd->device->channel, cmd->device->id,
2191 cmd->device->lun);
2192
2193 ret = SUCCESS;
2194
2195eh_dev_reset_done:
2196
2197 return ret;
2198}
2199
ce545039
MC		 2200/**
2201 * qla4xxx_eh_target_reset - callback for target reset.
2202 * @cmd: Pointer to Linux's SCSI command structure
2203 *
2204 * This routine is called by the Linux OS to reset the target.
2205 **/
2206static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
2207{
2208 struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
2209 struct ddb_entry *ddb_entry = cmd->device->hostdata;
c01be6dc 2210 int stat, ret;
ce545039
MC		 2211
2212 if (!ddb_entry)
2213 return FAILED;
2214
c01be6dc
MC		 2215 ret = iscsi_block_scsi_eh(cmd);
2216 if (ret)
2217 return ret;
2218
ce545039
MC		 2219 starget_printk(KERN_INFO, scsi_target(cmd->device),
2220 "WARM TARGET RESET ISSUED.\n");
2221
2222 DEBUG2(printk(KERN_INFO
2223 "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
2224 "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
242f9dcb 2225 ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
ce545039
MC		 2226 ha->dpc_flags, cmd->result, cmd->allowed));
2227
2228 stat = qla4xxx_reset_target(ha, ddb_entry);
2229 if (stat != QLA_SUCCESS) {
2230 starget_printk(KERN_INFO, scsi_target(cmd->device),
2231 "WARM TARGET RESET FAILED.\n");
2232 return FAILED;
2233 }
2234
ce545039
MC		 2235 if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
2236 NULL)) {
2237 starget_printk(KERN_INFO, scsi_target(cmd->device),
2238 "WARM TARGET DEVICE RESET FAILED - "
2239 "waiting for commands.\n");
2240 return FAILED;
2241 }
2242
9d562913
DS		 2243 /* Send marker. */
2244 if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
2245 MM_TGT_WARM_RESET) != QLA_SUCCESS) {
2246 starget_printk(KERN_INFO, scsi_target(cmd->device),
2247 "WARM TARGET DEVICE RESET FAILED - "
2248 "marker iocb failed.\n");
2249 return FAILED;
2250 }
2251
ce545039
MC		 2252 starget_printk(KERN_INFO, scsi_target(cmd->device),
2253 "WARM TARGET RESET SUCCEEDED.\n");
2254 return SUCCESS;
2255}
2256
afaf5a2d
DS		 2257/**
2258 * qla4xxx_eh_host_reset - kernel callback
2259 * @cmd: Pointer to Linux's SCSI command structure
2260 *
2261 * This routine is invoked by the Linux kernel to perform fatal error
2262 * recovery on the specified adapter.
2263 **/
2264static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
2265{
2266 int return_status = FAILED;
2267 struct scsi_qla_host *ha;
2268
2269 ha = (struct scsi_qla_host *) cmd->device->host->hostdata;
2270
f4f5df23
VC		 2271 if (ql4xdontresethba) {
2272 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
2273 ha->host_no, __func__));
2274 return FAILED;
2275 }
2276
c2660df3 2277 ql4_printk(KERN_INFO, ha,
dca05c4c 2278 "scsi(%ld:%d:%d:%d): HOST RESET ISSUED.\n", ha->host_no,
afaf5a2d
DS		 2279 cmd->device->channel, cmd->device->id, cmd->device->lun);
2280
2281 if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
2282 DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host. Adapter "
2283 "DEAD.\n", ha->host_no, cmd->device->channel,
2284 __func__));
2285
2286 return FAILED;
2287 }
2288
f4f5df23
VC		 2289 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
2290 if (is_qla8022(ha))
2291 set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
2292 else
2293 set_bit(DPC_RESET_HA, &ha->dpc_flags);
2294 }
50a29aec 2295
f4f5df23 2296 if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
afaf5a2d 2297 return_status = SUCCESS;
afaf5a2d 2298
c2660df3 2299 ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
25985edc 2300 return_status == FAILED ? "FAILED" : "SUCCEEDED");
afaf5a2d
DS		 2301
2302 return return_status;
2303}
2304
2232be0d
LC		 2305/* PCI AER driver recovers from all correctable errors w/o
2306 * driver intervention. For uncorrectable errors PCI AER
2307 * driver calls the following device driver's callbacks
2308 *
2309 * - Fatal Errors - link_reset
2310 * - Non-Fatal Errors - driver's pci_error_detected() which
2311 * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
2312 *
2313 * PCI AER driver calls
2314 * CAN_RECOVER - driver's pci_mmio_enabled(), mmio_enabled
2315 * returns RECOVERED or NEED_RESET if fw_hung
2316 * NEED_RESET - driver's slot_reset()
2317 * DISCONNECT - device is dead & cannot recover
2318 * RECOVERED - driver's pci_resume()
2319 */
2320static pci_ers_result_t
2321qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
2322{
2323 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
2324
2325 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
2326 ha->host_no, __func__, state);
2327
2328 if (!is_aer_supported(ha))
2329 return PCI_ERS_RESULT_NONE;
2330
2331 switch (state) {
2332 case pci_channel_io_normal:
2333 clear_bit(AF_EEH_BUSY, &ha->flags);
2334 return PCI_ERS_RESULT_CAN_RECOVER;
2335 case pci_channel_io_frozen:
2336 set_bit(AF_EEH_BUSY, &ha->flags);
2337 qla4xxx_mailbox_premature_completion(ha);
2338 qla4xxx_free_irqs(ha);
2339 pci_disable_device(pdev);
7b3595df
VC		 2340 /* Return back all IOs */
2341 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
2232be0d
LC		 2342 return PCI_ERS_RESULT_NEED_RESET;
2343 case pci_channel_io_perm_failure:
2344 set_bit(AF_EEH_BUSY, &ha->flags);
2345 set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
2346 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
2347 return PCI_ERS_RESULT_DISCONNECT;
2348 }
2349 return PCI_ERS_RESULT_NEED_RESET;
2350}
2351
2352/**
2353 * qla4xxx_pci_mmio_enabled() gets called if
2354 * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
2355 * and read/write to the device still works.
2356 **/
2357static pci_ers_result_t
2358qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
2359{
2360 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
2361
2362 if (!is_aer_supported(ha))
2363 return PCI_ERS_RESULT_NONE;
2364
7b3595df 2365 return PCI_ERS_RESULT_RECOVERED;
2232be0d
LC		 2366}
2367
7b3595df 2368static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
2232be0d
LC		 2369{
2370 uint32_t rval = QLA_ERROR;
7b3595df 2371 uint32_t ret = 0;
2232be0d
LC		 2372 int fn;
2373 struct pci_dev *other_pdev = NULL;
2374
2375 ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
2376
2377 set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
2378
2379 if (test_bit(AF_ONLINE, &ha->flags)) {
2380 clear_bit(AF_ONLINE, &ha->flags);
2381 qla4xxx_mark_all_devices_missing(ha);
2382 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
2232be0d
LC		 2383 }
2384
2385 fn = PCI_FUNC(ha->pdev->devfn);
2386 while (fn > 0) {
2387 fn--;
2388 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at "
2389 "func %x\n", ha->host_no, __func__, fn);
2390 /* Get the pci device given the domain, bus,
2391 * slot/function number */
2392 other_pdev =
2393 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
2394 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
2395 fn));
2396
2397 if (!other_pdev)
2398 continue;
2399
2400 if (atomic_read(&other_pdev->enable_cnt)) {
2401 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI "
2402 "func in enabled state%x\n", ha->host_no,
2403 __func__, fn);
2404 pci_dev_put(other_pdev);
2405 break;
2406 }
2407 pci_dev_put(other_pdev);
2408 }
2409
2410 /* The first function on the card, the reset owner will
2411 * start & initialize the firmware. The other functions
2412 * on the card will reset the firmware context
2413 */
2414 if (!fn) {
2415 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
2416 "0x%x is the owner\n", ha->host_no, __func__,
2417 ha->pdev->devfn);
2418
2419 qla4_8xxx_idc_lock(ha);
2420 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
2421 QLA82XX_DEV_COLD);
2422
2423 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_IDC_VERSION,
2424 QLA82XX_IDC_VERSION);
2425
2426 qla4_8xxx_idc_unlock(ha);
2427 clear_bit(AF_FW_RECOVERY, &ha->flags);
2428 rval = qla4xxx_initialize_adapter(ha, PRESERVE_DDB_LIST);
2429 qla4_8xxx_idc_lock(ha);
2430
2431 if (rval != QLA_SUCCESS) {
2432 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
2433 "FAILED\n", ha->host_no, __func__);
2434 qla4_8xxx_clear_drv_active(ha);
2435 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
2436 QLA82XX_DEV_FAILED);
2437 } else {
2438 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
2439 "READY\n", ha->host_no, __func__);
2440 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DEV_STATE,
2441 QLA82XX_DEV_READY);
2442 /* Clear driver state register */
2443 qla4_8xxx_wr_32(ha, QLA82XX_CRB_DRV_STATE, 0);
2444 qla4_8xxx_set_drv_active(ha);
7b3595df
VC		 2445 ret = qla4xxx_request_irqs(ha);
2446 if (ret) {
2447 ql4_printk(KERN_WARNING, ha, "Failed to "
2448 "reserve interrupt %d already in use.\n",
2449 ha->pdev->irq);
2450 rval = QLA_ERROR;
2451 } else {
2452 ha->isp_ops->enable_intrs(ha);
2453 rval = QLA_SUCCESS;
2454 }
2232be0d
LC		 2455 }
2456 qla4_8xxx_idc_unlock(ha);
2457 } else {
2458 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
2459 "the reset owner\n", ha->host_no, __func__,
2460 ha->pdev->devfn);
2461 if ((qla4_8xxx_rd_32(ha, QLA82XX_CRB_DEV_STATE) ==
2462 QLA82XX_DEV_READY)) {
2463 clear_bit(AF_FW_RECOVERY, &ha->flags);
2464 rval = qla4xxx_initialize_adapter(ha,
2465 PRESERVE_DDB_LIST);
7b3595df
VC		 2466 if (rval == QLA_SUCCESS) {
2467 ret = qla4xxx_request_irqs(ha);
2468 if (ret) {
2469 ql4_printk(KERN_WARNING, ha, "Failed to"
2470 " reserve interrupt %d already in"
2471 " use.\n", ha->pdev->irq);
2472 rval = QLA_ERROR;
2473 } else {
2474 ha->isp_ops->enable_intrs(ha);
2475 rval = QLA_SUCCESS;
2476 }
2477 }
2232be0d
LC		 2478 qla4_8xxx_idc_lock(ha);
2479 qla4_8xxx_set_drv_active(ha);
2480 qla4_8xxx_idc_unlock(ha);
2481 }
2482 }
2483 clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
2484 return rval;
2485}
2486
2487static pci_ers_result_t
2488qla4xxx_pci_slot_reset(struct pci_dev *pdev)
2489{
2490 pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
2491 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
2492 int rc;
2493
2494 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
2495 ha->host_no, __func__);
2496
2497 if (!is_aer_supported(ha))
2498 return PCI_ERS_RESULT_NONE;
2499
2500 /* Restore the saved state of PCIe device -
2501 * BAR registers, PCI Config space, PCIX, MSI,
2502 * IOV states
2503 */
2504 pci_restore_state(pdev);
2505
2506 /* pci_restore_state() clears the saved_state flag of the device
2507 * save restored state which resets saved_state flag
2508 */
2509 pci_save_state(pdev);
2510
2511 /* Initialize device or resume if in suspended state */
2512 rc = pci_enable_device(pdev);
2513 if (rc) {
25985edc 2514 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
2232be0d
LC		 2515 "device after reset\n", ha->host_no, __func__);
2516 goto exit_slot_reset;
2517 }
2518
7b3595df 2519 ha->isp_ops->disable_intrs(ha);
2232be0d
LC		 2520
2521 if (is_qla8022(ha)) {
2522 if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
2523 ret = PCI_ERS_RESULT_RECOVERED;
2524 goto exit_slot_reset;
2525 } else
2526 goto exit_slot_reset;
2527 }
2528
2529exit_slot_reset:
2530 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
2531 "device after reset\n", ha->host_no, __func__, ret);
2532 return ret;
2533}
2534
2535static void
2536qla4xxx_pci_resume(struct pci_dev *pdev)
2537{
2538 struct scsi_qla_host *ha = pci_get_drvdata(pdev);
2539 int ret;
2540
2541 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
2542 ha->host_no, __func__);
2543
2544 ret = qla4xxx_wait_for_hba_online(ha);
2545 if (ret != QLA_SUCCESS) {
2546 ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
2547 "resume I/O from slot/link_reset\n", ha->host_no,
2548 __func__);
2549 }
2550
2551 pci_cleanup_aer_uncorrect_error_status(pdev);
2552 clear_bit(AF_EEH_BUSY, &ha->flags);
2553}
2554
2555static struct pci_error_handlers qla4xxx_err_handler = {
2556 .error_detected = qla4xxx_pci_error_detected,
2557 .mmio_enabled = qla4xxx_pci_mmio_enabled,
2558 .slot_reset = qla4xxx_pci_slot_reset,
2559 .resume = qla4xxx_pci_resume,
2560};
2561
afaf5a2d
DS		 2562static struct pci_device_id qla4xxx_pci_tbl[] = {
2563 {
2564 .vendor = PCI_VENDOR_ID_QLOGIC,
2565 .device = PCI_DEVICE_ID_QLOGIC_ISP4010,
2566 .subvendor = PCI_ANY_ID,
2567 .subdevice = PCI_ANY_ID,
2568 },
2569 {
2570 .vendor = PCI_VENDOR_ID_QLOGIC,
2571 .device = PCI_DEVICE_ID_QLOGIC_ISP4022,
2572 .subvendor = PCI_ANY_ID,
2573 .subdevice = PCI_ANY_ID,
2574 },
d915058f
DS		 2575 {
2576 .vendor = PCI_VENDOR_ID_QLOGIC,
2577 .device = PCI_DEVICE_ID_QLOGIC_ISP4032,
2578 .subvendor = PCI_ANY_ID,
2579 .subdevice = PCI_ANY_ID,
2580 },
f4f5df23
VC		 2581 {
2582 .vendor = PCI_VENDOR_ID_QLOGIC,
2583 .device = PCI_DEVICE_ID_QLOGIC_ISP8022,
2584 .subvendor = PCI_ANY_ID,
2585 .subdevice = PCI_ANY_ID,
2586 },
afaf5a2d
DS		 2587 {0, 0},
2588};
2589MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
2590
47975477 2591static struct pci_driver qla4xxx_pci_driver = {
afaf5a2d
DS		 2592 .name = DRIVER_NAME,
2593 .id_table = qla4xxx_pci_tbl,
2594 .probe = qla4xxx_probe_adapter,
2595 .remove = qla4xxx_remove_adapter,
2232be0d 2596 .err_handler = &qla4xxx_err_handler,
afaf5a2d
DS		 2597};
2598
2599static int __init qla4xxx_module_init(void)
2600{
2601 int ret;
2602
2603 /* Allocate cache for SRBs. */
2604 srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
20c2df83 2605 SLAB_HWCACHE_ALIGN, NULL);
afaf5a2d
DS		 2606 if (srb_cachep == NULL) {
2607 printk(KERN_ERR
2608 "%s: Unable to allocate SRB cache..."
2609 "Failing load!\n", DRIVER_NAME);
2610 ret = -ENOMEM;
2611 goto no_srp_cache;
2612 }
2613
2614 /* Derive version string. */
2615 strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
11010fec 2616 if (ql4xextended_error_logging)
afaf5a2d
DS		 2617 strcat(qla4xxx_version_str, "-debug");
2618
2619 qla4xxx_scsi_transport =
2620 iscsi_register_transport(&qla4xxx_iscsi_transport);
2621 if (!qla4xxx_scsi_transport){
2622 ret = -ENODEV;
2623 goto release_srb_cache;
2624 }
2625
afaf5a2d
DS		 2626 ret = pci_register_driver(&qla4xxx_pci_driver);
2627 if (ret)
2628 goto unregister_transport;
2629
2630 printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
2631 return 0;
5ae16db3 2632
afaf5a2d
DS		 2633unregister_transport:
2634 iscsi_unregister_transport(&qla4xxx_iscsi_transport);
2635release_srb_cache:
2636 kmem_cache_destroy(srb_cachep);
2637no_srp_cache:
2638 return ret;
2639}
2640
2641static void __exit qla4xxx_module_exit(void)
2642{
2643 pci_unregister_driver(&qla4xxx_pci_driver);
2644 iscsi_unregister_transport(&qla4xxx_iscsi_transport);
2645 kmem_cache_destroy(srb_cachep);
2646}
2647
2648module_init(qla4xxx_module_init);
2649module_exit(qla4xxx_module_exit);
2650
2651MODULE_AUTHOR("QLogic Corporation");
2652MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
2653MODULE_LICENSE("GPL");
2654MODULE_VERSION(QLA4XXX_DRIVER_VERSION);
Linux 6.x block layer and io_uring tree(s)