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path: root/drivers/scsi/qla4xxx/ql4_init.c
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Diffstat (limited to 'drivers/scsi/qla4xxx/ql4_init.c')
-rw-r--r--drivers/scsi/qla4xxx/ql4_init.c1340
1 files changed, 1340 insertions, 0 deletions
diff --git a/drivers/scsi/qla4xxx/ql4_init.c b/drivers/scsi/qla4xxx/ql4_init.c
new file mode 100644
index 00000000000..bb3a1c11f44
--- /dev/null
+++ b/drivers/scsi/qla4xxx/ql4_init.c
@@ -0,0 +1,1340 @@
1/*
2 * QLogic iSCSI HBA Driver
3 * Copyright (c) 2003-2006 QLogic Corporation
4 *
5 * See LICENSE.qla4xxx for copyright and licensing details.
6 */
7
8#include "ql4_def.h"
9
10/*
11 * QLogic ISP4xxx Hardware Support Function Prototypes.
12 */
13
14static void ql4xxx_set_mac_number(struct scsi_qla_host *ha)
15{
16 uint32_t value;
17 uint8_t func_number;
18 unsigned long flags;
19
20 /* Get the function number */
21 spin_lock_irqsave(&ha->hardware_lock, flags);
22 value = readw(&ha->reg->ctrl_status);
23 spin_unlock_irqrestore(&ha->hardware_lock, flags);
24
25 func_number = (uint8_t) ((value >> 4) & 0x30);
26 switch (value & ISP_CONTROL_FN_MASK) {
27 case ISP_CONTROL_FN0_SCSI:
28 ha->mac_index = 1;
29 break;
30 case ISP_CONTROL_FN1_SCSI:
31 ha->mac_index = 3;
32 break;
33 default:
34 DEBUG2(printk("scsi%ld: %s: Invalid function number, "
35 "ispControlStatus = 0x%x\n", ha->host_no,
36 __func__, value));
37 break;
38 }
39 DEBUG2(printk("scsi%ld: %s: mac_index %d.\n", ha->host_no, __func__,
40 ha->mac_index));
41}
42
43/**
44 * qla4xxx_free_ddb - deallocate ddb
45 * @ha: pointer to host adapter structure.
46 * @ddb_entry: pointer to device database entry
47 *
48 * This routine deallocates and unlinks the specified ddb_entry from the
49 * adapter's
50 **/
51void qla4xxx_free_ddb(struct scsi_qla_host *ha, struct ddb_entry *ddb_entry)
52{
53 /* Remove device entry from list */
54 list_del_init(&ddb_entry->list);
55
56 /* Remove device pointer from index mapping arrays */
57 ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] =
58 (struct ddb_entry *) INVALID_ENTRY;
59 ha->tot_ddbs--;
60
61 /* Free memory and scsi-ml struct for device entry */
62 qla4xxx_destroy_sess(ddb_entry);
63}
64
65/**
66 * qla4xxx_free_ddb_list - deallocate all ddbs
67 * @ha: pointer to host adapter structure.
68 *
69 * This routine deallocates and removes all devices on the sppecified adapter.
70 **/
71void qla4xxx_free_ddb_list(struct scsi_qla_host *ha)
72{
73 struct list_head *ptr;
74 struct ddb_entry *ddb_entry;
75
76 while (!list_empty(&ha->ddb_list)) {
77 ptr = ha->ddb_list.next;
78 /* Free memory for device entry and remove */
79 ddb_entry = list_entry(ptr, struct ddb_entry, list);
80 qla4xxx_free_ddb(ha, ddb_entry);
81 }
82}
83
84/**
85 * qla4xxx_init_rings - initialize hw queues
86 * @ha: pointer to host adapter structure.
87 *
88 * This routine initializes the internal queues for the specified adapter.
89 * The QLA4010 requires us to restart the queues at index 0.
90 * The QLA4000 doesn't care, so just default to QLA4010's requirement.
91 **/
92int qla4xxx_init_rings(struct scsi_qla_host *ha)
93{
94 unsigned long flags = 0;
95
96 /* Initialize request queue. */
97 spin_lock_irqsave(&ha->hardware_lock, flags);
98 ha->request_out = 0;
99 ha->request_in = 0;
100 ha->request_ptr = &ha->request_ring[ha->request_in];
101 ha->req_q_count = REQUEST_QUEUE_DEPTH;
102
103 /* Initialize response queue. */
104 ha->response_in = 0;
105 ha->response_out = 0;
106 ha->response_ptr = &ha->response_ring[ha->response_out];
107
108 /*
109 * Initialize DMA Shadow registers. The firmware is really supposed to
110 * take care of this, but on some uniprocessor systems, the shadow
111 * registers aren't cleared-- causing the interrupt_handler to think
112 * there are responses to be processed when there aren't.
113 */
114 ha->shadow_regs->req_q_out = __constant_cpu_to_le32(0);
115 ha->shadow_regs->rsp_q_in = __constant_cpu_to_le32(0);
116 wmb();
117
118 writel(0, &ha->reg->req_q_in);
119 writel(0, &ha->reg->rsp_q_out);
120 readl(&ha->reg->rsp_q_out);
121
122 spin_unlock_irqrestore(&ha->hardware_lock, flags);
123
124 return QLA_SUCCESS;
125}
126
127/**
128 * qla4xxx_validate_mac_address - validate adapter MAC address(es)
129 * @ha: pointer to host adapter structure.
130 *
131 **/
132static int qla4xxx_validate_mac_address(struct scsi_qla_host *ha)
133{
134 struct flash_sys_info *sys_info;
135 dma_addr_t sys_info_dma;
136 int status = QLA_ERROR;
137
138 sys_info = dma_alloc_coherent(&ha->pdev->dev, sizeof(*sys_info),
139 &sys_info_dma, GFP_KERNEL);
140 if (sys_info == NULL) {
141 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
142 ha->host_no, __func__));
143
144 goto exit_validate_mac_no_free;
145 }
146 memset(sys_info, 0, sizeof(*sys_info));
147
148 /* Get flash sys info */
149 if (qla4xxx_get_flash(ha, sys_info_dma, FLASH_OFFSET_SYS_INFO,
150 sizeof(*sys_info)) != QLA_SUCCESS) {
151 DEBUG2(printk("scsi%ld: %s: get_flash FLASH_OFFSET_SYS_INFO "
152 "failed\n", ha->host_no, __func__));
153
154 goto exit_validate_mac;
155 }
156
157 /* Save M.A.C. address & serial_number */
158 memcpy(ha->my_mac, &sys_info->physAddr[0].address[0],
159 min(sizeof(ha->my_mac),
160 sizeof(sys_info->physAddr[0].address)));
161 memcpy(ha->serial_number, &sys_info->acSerialNumber,
162 min(sizeof(ha->serial_number),
163 sizeof(sys_info->acSerialNumber)));
164
165 status = QLA_SUCCESS;
166
167 exit_validate_mac:
168 dma_free_coherent(&ha->pdev->dev, sizeof(*sys_info), sys_info,
169 sys_info_dma);
170
171 exit_validate_mac_no_free:
172 return status;
173}
174
175/**
176 * qla4xxx_init_local_data - initialize adapter specific local data
177 * @ha: pointer to host adapter structure.
178 *
179 **/
180static int qla4xxx_init_local_data(struct scsi_qla_host *ha)
181{
182 /* Initilize aen queue */
183 ha->aen_q_count = MAX_AEN_ENTRIES;
184
185 return qla4xxx_get_firmware_status(ha);
186}
187
188static int qla4xxx_fw_ready(struct scsi_qla_host *ha)
189{
190 uint32_t timeout_count;
191 int ready = 0;
192
193 DEBUG2(dev_info(&ha->pdev->dev, "Waiting for Firmware Ready..\n"));
194 for (timeout_count = ADAPTER_INIT_TOV; timeout_count > 0;
195 timeout_count--) {
196 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
197 qla4xxx_get_dhcp_ip_address(ha);
198
199 /* Get firmware state. */
200 if (qla4xxx_get_firmware_state(ha) != QLA_SUCCESS) {
201 DEBUG2(printk("scsi%ld: %s: unable to get firmware "
202 "state\n", ha->host_no, __func__));
203 break;
204
205 }
206
207 if (ha->firmware_state & FW_STATE_ERROR) {
208 DEBUG2(printk("scsi%ld: %s: an unrecoverable error has"
209 " occurred\n", ha->host_no, __func__));
210 break;
211
212 }
213 if (ha->firmware_state & FW_STATE_CONFIG_WAIT) {
214 /*
215 * The firmware has not yet been issued an Initialize
216 * Firmware command, so issue it now.
217 */
218 if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR)
219 break;
220
221 /* Go back and test for ready state - no wait. */
222 continue;
223 }
224
225 if (ha->firmware_state == FW_STATE_READY) {
226 DEBUG2(dev_info(&ha->pdev->dev, "Firmware Ready..\n"));
227 /* The firmware is ready to process SCSI commands. */
228 DEBUG2(dev_info(&ha->pdev->dev,
229 "scsi%ld: %s: MEDIA TYPE - %s\n",
230 ha->host_no,
231 __func__, (ha->addl_fw_state &
232 FW_ADDSTATE_OPTICAL_MEDIA)
233 != 0 ? "OPTICAL" : "COPPER"));
234 DEBUG2(dev_info(&ha->pdev->dev,
235 "scsi%ld: %s: DHCP STATE Enabled "
236 "%s\n",
237 ha->host_no, __func__,
238 (ha->addl_fw_state &
239 FW_ADDSTATE_DHCP_ENABLED) != 0 ?
240 "YES" : "NO"));
241 DEBUG2(dev_info(&ha->pdev->dev,
242 "scsi%ld: %s: LINK %s\n",
243 ha->host_no, __func__,
244 (ha->addl_fw_state &
245 FW_ADDSTATE_LINK_UP) != 0 ?
246 "UP" : "DOWN"));
247 DEBUG2(dev_info(&ha->pdev->dev,
248 "scsi%ld: %s: iSNS Service "
249 "Started %s\n",
250 ha->host_no, __func__,
251 (ha->addl_fw_state &
252 FW_ADDSTATE_ISNS_SVC_ENABLED) != 0 ?
253 "YES" : "NO"));
254
255 ready = 1;
256 break;
257 }
258 DEBUG2(printk("scsi%ld: %s: waiting on fw, state=%x:%x - "
259 "seconds expired= %d\n", ha->host_no, __func__,
260 ha->firmware_state, ha->addl_fw_state,
261 timeout_count));
262 msleep(1000);
263 } /* end of for */
264
265 if (timeout_count <= 0)
266 DEBUG2(printk("scsi%ld: %s: FW Initialization timed out!\n",
267 ha->host_no, __func__));
268
269 if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS) {
270 DEBUG2(printk("scsi%ld: %s: FW is reporting its waiting to"
271 " grab an IP address from DHCP server\n",
272 ha->host_no, __func__));
273 ready = 1;
274 }
275
276 return ready;
277}
278
279/**
280 * qla4xxx_init_firmware - initializes the firmware.
281 * @ha: pointer to host adapter structure.
282 *
283 **/
284static int qla4xxx_init_firmware(struct scsi_qla_host *ha)
285{
286 int status = QLA_ERROR;
287
288 dev_info(&ha->pdev->dev, "Initializing firmware..\n");
289 if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR) {
290 DEBUG2(printk("scsi%ld: %s: Failed to initialize firmware "
291 "control block\n", ha->host_no, __func__));
292 return status;
293 }
294 if (!qla4xxx_fw_ready(ha))
295 return status;
296
297 set_bit(AF_ONLINE, &ha->flags);
298 return qla4xxx_get_firmware_status(ha);
299}
300
301static struct ddb_entry* qla4xxx_get_ddb_entry(struct scsi_qla_host *ha,
302 uint32_t fw_ddb_index)
303{
304 struct dev_db_entry *fw_ddb_entry = NULL;
305 dma_addr_t fw_ddb_entry_dma;
306 struct ddb_entry *ddb_entry = NULL;
307 int found = 0;
308 uint32_t device_state;
309
310 /* Make sure the dma buffer is valid */
311 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
312 sizeof(*fw_ddb_entry),
313 &fw_ddb_entry_dma, GFP_KERNEL);
314 if (fw_ddb_entry == NULL) {
315 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
316 ha->host_no, __func__));
317 return NULL;
318 }
319
320 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
321 fw_ddb_entry_dma, NULL, NULL,
322 &device_state, NULL, NULL, NULL) ==
323 QLA_ERROR) {
324 DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
325 "fw_ddb_index %d\n", ha->host_no, __func__,
326 fw_ddb_index));
327 return NULL;
328 }
329
330 /* Allocate DDB if not already allocated. */
331 DEBUG2(printk("scsi%ld: %s: Looking for ddb[%d]\n", ha->host_no,
332 __func__, fw_ddb_index));
333 list_for_each_entry(ddb_entry, &ha->ddb_list, list) {
334 if (memcmp(ddb_entry->iscsi_name, fw_ddb_entry->iscsiName,
335 ISCSI_NAME_SIZE) == 0) {
336 found++;
337 break;
338 }
339 }
340
341 if (!found) {
342 DEBUG2(printk("scsi%ld: %s: ddb[%d] not found - allocating "
343 "new ddb\n", ha->host_no, __func__,
344 fw_ddb_index));
345 ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
346 }
347
348 /* if not found allocate new ddb */
349 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
350 fw_ddb_entry_dma);
351
352 return ddb_entry;
353}
354
355/**
356 * qla4xxx_update_ddb_entry - update driver's internal ddb
357 * @ha: pointer to host adapter structure.
358 * @ddb_entry: pointer to device database structure to be filled
359 * @fw_ddb_index: index of the ddb entry in fw ddb table
360 *
361 * This routine updates the driver's internal device database entry
362 * with information retrieved from the firmware's device database
363 * entry for the specified device. The ddb_entry->fw_ddb_index field
364 * must be initialized prior to calling this routine
365 *
366 **/
367int qla4xxx_update_ddb_entry(struct scsi_qla_host *ha,
368 struct ddb_entry *ddb_entry,
369 uint32_t fw_ddb_index)
370{
371 struct dev_db_entry *fw_ddb_entry = NULL;
372 dma_addr_t fw_ddb_entry_dma;
373 int status = QLA_ERROR;
374
375 if (ddb_entry == NULL) {
376 DEBUG2(printk("scsi%ld: %s: ddb_entry is NULL\n", ha->host_no,
377 __func__));
378 goto exit_update_ddb;
379 }
380
381 /* Make sure the dma buffer is valid */
382 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
383 sizeof(*fw_ddb_entry),
384 &fw_ddb_entry_dma, GFP_KERNEL);
385 if (fw_ddb_entry == NULL) {
386 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
387 ha->host_no, __func__));
388
389 goto exit_update_ddb;
390 }
391
392 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
393 fw_ddb_entry_dma, NULL, NULL,
394 &ddb_entry->fw_ddb_device_state, NULL,
395 &ddb_entry->tcp_source_port_num,
396 &ddb_entry->connection_id) ==
397 QLA_ERROR) {
398 DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
399 "fw_ddb_index %d\n", ha->host_no, __func__,
400 fw_ddb_index));
401
402 goto exit_update_ddb;
403 }
404
405 status = QLA_SUCCESS;
406 ddb_entry->target_session_id = le16_to_cpu(fw_ddb_entry->TSID);
407 ddb_entry->task_mgmt_timeout =
408 le16_to_cpu(fw_ddb_entry->taskMngmntTimeout);
409 ddb_entry->CmdSn = 0;
410 ddb_entry->exe_throttle = le16_to_cpu(fw_ddb_entry->exeThrottle);
411 ddb_entry->default_relogin_timeout =
412 le16_to_cpu(fw_ddb_entry->taskMngmntTimeout);
413 ddb_entry->default_time2wait = le16_to_cpu(fw_ddb_entry->minTime2Wait);
414
415 /* Update index in case it changed */
416 ddb_entry->fw_ddb_index = fw_ddb_index;
417 ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
418
419 ddb_entry->port = le16_to_cpu(fw_ddb_entry->portNumber);
420 ddb_entry->tpgt = le32_to_cpu(fw_ddb_entry->TargetPortalGroup);
421 memcpy(&ddb_entry->iscsi_name[0], &fw_ddb_entry->iscsiName[0],
422 min(sizeof(ddb_entry->iscsi_name),
423 sizeof(fw_ddb_entry->iscsiName)));
424 memcpy(&ddb_entry->ip_addr[0], &fw_ddb_entry->ipAddr[0],
425 min(sizeof(ddb_entry->ip_addr), sizeof(fw_ddb_entry->ipAddr)));
426
427 DEBUG2(printk("scsi%ld: %s: ddb[%d] - State= %x status= %d.\n",
428 ha->host_no, __func__, fw_ddb_index,
429 ddb_entry->fw_ddb_device_state, status));
430
431 exit_update_ddb:
432 if (fw_ddb_entry)
433 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
434 fw_ddb_entry, fw_ddb_entry_dma);
435
436 return status;
437}
438
439/**
440 * qla4xxx_alloc_ddb - allocate device database entry
441 * @ha: Pointer to host adapter structure.
442 * @fw_ddb_index: Firmware's device database index
443 *
444 * This routine allocates a ddb_entry, ititializes some values, and
445 * inserts it into the ddb list.
446 **/
447struct ddb_entry * qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
448 uint32_t fw_ddb_index)
449{
450 struct ddb_entry *ddb_entry;
451
452 DEBUG2(printk("scsi%ld: %s: fw_ddb_index [%d]\n", ha->host_no,
453 __func__, fw_ddb_index));
454
455 ddb_entry = qla4xxx_alloc_sess(ha);
456 if (ddb_entry == NULL) {
457 DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
458 "to add fw_ddb_index [%d]\n",
459 ha->host_no, __func__, fw_ddb_index));
460 return ddb_entry;
461 }
462
463 ddb_entry->fw_ddb_index = fw_ddb_index;
464 atomic_set(&ddb_entry->port_down_timer, ha->port_down_retry_count);
465 atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
466 atomic_set(&ddb_entry->relogin_timer, 0);
467 atomic_set(&ddb_entry->relogin_retry_count, 0);
468 atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
469 list_add_tail(&ddb_entry->list, &ha->ddb_list);
470 ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
471 ha->tot_ddbs++;
472
473 return ddb_entry;
474}
475
476/**
477 * qla4xxx_configure_ddbs - builds driver ddb list
478 * @ha: Pointer to host adapter structure.
479 *
480 * This routine searches for all valid firmware ddb entries and builds
481 * an internal ddb list. Ddbs that are considered valid are those with
482 * a device state of SESSION_ACTIVE.
483 **/
484static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
485{
486 int status = QLA_SUCCESS;
487 uint32_t fw_ddb_index = 0;
488 uint32_t next_fw_ddb_index = 0;
489 uint32_t ddb_state;
490 uint32_t conn_err, err_code;
491 struct ddb_entry *ddb_entry;
492
493 dev_info(&ha->pdev->dev, "Initializing DDBs ...\n");
494 for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES;
495 fw_ddb_index = next_fw_ddb_index) {
496 /* First, let's see if a device exists here */
497 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, NULL, 0, NULL,
498 &next_fw_ddb_index, &ddb_state,
499 &conn_err, NULL, NULL) ==
500 QLA_ERROR) {
501 DEBUG2(printk("scsi%ld: %s: get_ddb_entry, "
502 "fw_ddb_index %d failed", ha->host_no,
503 __func__, fw_ddb_index));
504 return QLA_ERROR;
505 }
506
507 DEBUG2(printk("scsi%ld: %s: Getting DDB[%d] ddbstate=0x%x, "
508 "next_fw_ddb_index=%d.\n", ha->host_no, __func__,
509 fw_ddb_index, ddb_state, next_fw_ddb_index));
510
511 /* Issue relogin, if necessary. */
512 if (ddb_state == DDB_DS_SESSION_FAILED ||
513 ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) {
514 /* Try and login to device */
515 DEBUG2(printk("scsi%ld: %s: Login to DDB[%d]\n",
516 ha->host_no, __func__, fw_ddb_index));
517 err_code = ((conn_err & 0x00ff0000) >> 16);
518 if (err_code == 0x1c || err_code == 0x06) {
519 DEBUG2(printk("scsi%ld: %s send target "
520 "completed "
521 "or access denied failure\n",
522 ha->host_no, __func__));
523 } else
524 qla4xxx_set_ddb_entry(ha, fw_ddb_index, 0);
525 }
526
527 if (ddb_state != DDB_DS_SESSION_ACTIVE)
528 goto next_one;
529 /*
530 * if fw_ddb with session active state found,
531 * add to ddb_list
532 */
533 DEBUG2(printk("scsi%ld: %s: DDB[%d] added to list\n",
534 ha->host_no, __func__, fw_ddb_index));
535
536 /* Add DDB to internal our ddb list. */
537 ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index);
538 if (ddb_entry == NULL) {
539 DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
540 "for device at fw_ddb_index %d\n",
541 ha->host_no, __func__, fw_ddb_index));
542 return QLA_ERROR;
543 }
544 /* Fill in the device structure */
545 if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
546 QLA_ERROR) {
547 ha->fw_ddb_index_map[fw_ddb_index] =
548 (struct ddb_entry *)INVALID_ENTRY;
549
550
551 DEBUG2(printk("scsi%ld: %s: update_ddb_entry failed "
552 "for fw_ddb_index %d.\n",
553 ha->host_no, __func__, fw_ddb_index));
554 return QLA_ERROR;
555 }
556
557next_one:
558 /* We know we've reached the last device when
559 * next_fw_ddb_index is 0 */
560 if (next_fw_ddb_index == 0)
561 break;
562 }
563
564 dev_info(&ha->pdev->dev, "DDB list done..\n");
565
566 return status;
567}
568
569struct qla4_relog_scan {
570 int halt_wait;
571 uint32_t conn_err;
572 uint32_t err_code;
573 uint32_t fw_ddb_index;
574 uint32_t next_fw_ddb_index;
575 uint32_t fw_ddb_device_state;
576};
577
578static int qla4_test_rdy(struct scsi_qla_host *ha, struct qla4_relog_scan *rs)
579{
580 struct ddb_entry *ddb_entry;
581
582 /*
583 * Don't want to do a relogin if connection
584 * error is 0x1c.
585 */
586 rs->err_code = ((rs->conn_err & 0x00ff0000) >> 16);
587 if (rs->err_code == 0x1c || rs->err_code == 0x06) {
588 DEBUG2(printk(
589 "scsi%ld: %s send target"
590 " completed or "
591 "access denied failure\n",
592 ha->host_no, __func__));
593 } else {
594 /* We either have a device that is in
595 * the process of relogging in or a
596 * device that is waiting to be
597 * relogged in */
598 rs->halt_wait = 0;
599
600 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
601 rs->fw_ddb_index);
602 if (ddb_entry == NULL)
603 return QLA_ERROR;
604
605 if (ddb_entry->dev_scan_wait_to_start_relogin != 0
606 && time_after_eq(jiffies,
607 ddb_entry->
608 dev_scan_wait_to_start_relogin))
609 {
610 ddb_entry->dev_scan_wait_to_start_relogin = 0;
611 qla4xxx_set_ddb_entry(ha, rs->fw_ddb_index, 0);
612 }
613 }
614 return QLA_SUCCESS;
615}
616
617static int qla4_scan_for_relogin(struct scsi_qla_host *ha,
618 struct qla4_relog_scan *rs)
619{
620 int error;
621
622 /* scan for relogins
623 * ----------------- */
624 for (rs->fw_ddb_index = 0; rs->fw_ddb_index < MAX_DDB_ENTRIES;
625 rs->fw_ddb_index = rs->next_fw_ddb_index) {
626 if (qla4xxx_get_fwddb_entry(ha, rs->fw_ddb_index, NULL, 0,
627 NULL, &rs->next_fw_ddb_index,
628 &rs->fw_ddb_device_state,
629 &rs->conn_err, NULL, NULL)
630 == QLA_ERROR)
631 return QLA_ERROR;
632
633 if (rs->fw_ddb_device_state == DDB_DS_LOGIN_IN_PROCESS)
634 rs->halt_wait = 0;
635
636 if (rs->fw_ddb_device_state == DDB_DS_SESSION_FAILED ||
637 rs->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE) {
638 error = qla4_test_rdy(ha, rs);
639 if (error)
640 return error;
641 }
642
643 /* We know we've reached the last device when
644 * next_fw_ddb_index is 0 */
645 if (rs->next_fw_ddb_index == 0)
646 break;
647 }
648 return QLA_SUCCESS;
649}
650
651/**
652 * qla4xxx_devices_ready - wait for target devices to be logged in
653 * @ha: pointer to adapter structure
654 *
655 * This routine waits up to ql4xdiscoverywait seconds
656 * F/W database during driver load time.
657 **/
658static int qla4xxx_devices_ready(struct scsi_qla_host *ha)
659{
660 int error;
661 unsigned long discovery_wtime;
662 struct qla4_relog_scan rs;
663
664 discovery_wtime = jiffies + (ql4xdiscoverywait * HZ);
665
666 DEBUG(printk("Waiting (%d) for devices ...\n", ql4xdiscoverywait));
667 do {
668 /* poll for AEN. */
669 qla4xxx_get_firmware_state(ha);
670 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) {
671 /* Set time-between-relogin timer */
672 qla4xxx_process_aen(ha, RELOGIN_DDB_CHANGED_AENS);
673 }
674
675 /* if no relogins active or needed, halt discvery wait */
676 rs.halt_wait = 1;
677
678 error = qla4_scan_for_relogin(ha, &rs);
679
680 if (rs.halt_wait) {
681 DEBUG2(printk("scsi%ld: %s: Delay halted. Devices "
682 "Ready.\n", ha->host_no, __func__));
683 return QLA_SUCCESS;
684 }
685
686 msleep(2000);
687 } while (!time_after_eq(jiffies, discovery_wtime));
688
689 DEBUG3(qla4xxx_get_conn_event_log(ha));
690
691 return QLA_SUCCESS;
692}
693
694static void qla4xxx_flush_AENS(struct scsi_qla_host *ha)
695{
696 unsigned long wtime;
697
698 /* Flush the 0x8014 AEN from the firmware as a result of
699 * Auto connect. We are basically doing get_firmware_ddb()
700 * to determine whether we need to log back in or not.
701 * Trying to do a set ddb before we have processed 0x8014
702 * will result in another set_ddb() for the same ddb. In other
703 * words there will be stale entries in the aen_q.
704 */
705 wtime = jiffies + (2 * HZ);
706 do {
707 if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS)
708 if (ha->firmware_state & (BIT_2 | BIT_0))
709 return;
710
711 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
712 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
713
714 msleep(1000);
715 } while (!time_after_eq(jiffies, wtime));
716
717}
718
719static int qla4xxx_initialize_ddb_list(struct scsi_qla_host *ha)
720{
721 uint16_t fw_ddb_index;
722 int status = QLA_SUCCESS;
723
724 /* free the ddb list if is not empty */
725 if (!list_empty(&ha->ddb_list))
726 qla4xxx_free_ddb_list(ha);
727
728 for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES; fw_ddb_index++)
729 ha->fw_ddb_index_map[fw_ddb_index] =
730 (struct ddb_entry *)INVALID_ENTRY;
731
732 ha->tot_ddbs = 0;
733
734 qla4xxx_flush_AENS(ha);
735
736 /*
737 * First perform device discovery for active
738 * fw ddb indexes and build
739 * ddb list.
740 */
741 if ((status = qla4xxx_build_ddb_list(ha)) == QLA_ERROR)
742 return status;
743
744 /* Wait for an AEN */
745 qla4xxx_devices_ready(ha);
746
747 /*
748 * Targets can come online after the inital discovery, so processing
749 * the aens here will catch them.
750 */
751 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
752 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
753
754 return status;
755}
756
757/**
758 * qla4xxx_update_ddb_list - update the driver ddb list
759 * @ha: pointer to host adapter structure.
760 *
761 * This routine obtains device information from the F/W database after
762 * firmware or adapter resets. The device table is preserved.
763 **/
764int qla4xxx_reinitialize_ddb_list(struct scsi_qla_host *ha)
765{
766 int status = QLA_SUCCESS;
767 struct ddb_entry *ddb_entry, *detemp;
768
769 /* Update the device information for all devices. */
770 list_for_each_entry_safe(ddb_entry, detemp, &ha->ddb_list, list) {
771 qla4xxx_update_ddb_entry(ha, ddb_entry,
772 ddb_entry->fw_ddb_index);
773 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
774 atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
775 DEBUG2(printk ("scsi%ld: %s: ddb index [%d] marked "
776 "ONLINE\n", ha->host_no, __func__,
777 ddb_entry->fw_ddb_index));
778 } else if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
779 qla4xxx_mark_device_missing(ha, ddb_entry);
780 }
781 return status;
782}
783
784/**
785 * qla4xxx_relogin_device - re-establish session
786 * @ha: Pointer to host adapter structure.
787 * @ddb_entry: Pointer to device database entry
788 *
789 * This routine does a session relogin with the specified device.
790 * The ddb entry must be assigned prior to making this call.
791 **/
792int qla4xxx_relogin_device(struct scsi_qla_host *ha,
793 struct ddb_entry * ddb_entry)
794{
795 uint16_t relogin_timer;
796
797 relogin_timer = max(ddb_entry->default_relogin_timeout,
798 (uint16_t)RELOGIN_TOV);
799 atomic_set(&ddb_entry->relogin_timer, relogin_timer);
800
801 DEBUG2(printk("scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
802 ddb_entry->fw_ddb_index, relogin_timer));
803
804 qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index, 0);
805
806 return QLA_SUCCESS;
807}
808
809/**
810 * qla4010_get_topcat_presence - check if it is QLA4040 TopCat Chip
811 * @ha: Pointer to host adapter structure.
812 *
813 **/
814static int qla4010_get_topcat_presence(struct scsi_qla_host *ha)
815{
816 unsigned long flags;
817 uint16_t topcat;
818
819 if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS)
820 return QLA_ERROR;
821 spin_lock_irqsave(&ha->hardware_lock, flags);
822 topcat = rd_nvram_word(ha, offsetof(struct eeprom_data,
823 isp4010.topcat));
824 spin_unlock_irqrestore(&ha->hardware_lock, flags);
825
826 if ((topcat & TOPCAT_MASK) == TOPCAT_PRESENT)
827 set_bit(AF_TOPCAT_CHIP_PRESENT, &ha->flags);
828 else
829 clear_bit(AF_TOPCAT_CHIP_PRESENT, &ha->flags);
830 ql4xxx_unlock_nvram(ha);
831 return QLA_SUCCESS;
832}
833
834
835static int qla4xxx_config_nvram(struct scsi_qla_host *ha)
836{
837 unsigned long flags;
838 union external_hw_config_reg extHwConfig;
839
840 DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
841 __func__));
842 if (ql4xxx_lock_flash(ha) != QLA_SUCCESS)
843 return (QLA_ERROR);
844 if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
845 ql4xxx_unlock_flash(ha);
846 return (QLA_ERROR);
847 }
848
849 /* Get EEPRom Parameters from NVRAM and validate */
850 dev_info(&ha->pdev->dev, "Configuring NVRAM ...\n");
851 if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
852 spin_lock_irqsave(&ha->hardware_lock, flags);
853 extHwConfig.Asuint32_t =
854 rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
855 spin_unlock_irqrestore(&ha->hardware_lock, flags);
856 } else {
857 /*
858 * QLogic adapters should always have a valid NVRAM.
859 * If not valid, do not load.
860 */
861 dev_warn(&ha->pdev->dev,
862 "scsi%ld: %s: EEProm checksum invalid. "
863 "Please update your EEPROM\n", ha->host_no,
864 __func__);
865
866 /* set defaults */
867 if (is_qla4010(ha))
868 extHwConfig.Asuint32_t = 0x1912;
869 else if (is_qla4022(ha))
870 extHwConfig.Asuint32_t = 0x0023;
871 }
872 DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
873 ha->host_no, __func__, extHwConfig.Asuint32_t));
874
875 spin_lock_irqsave(&ha->hardware_lock, flags);
876 writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
877 readl(isp_ext_hw_conf(ha));
878 spin_unlock_irqrestore(&ha->hardware_lock, flags);
879
880 ql4xxx_unlock_nvram(ha);
881 ql4xxx_unlock_flash(ha);
882
883 return (QLA_SUCCESS);
884}
885
886static void qla4x00_pci_config(struct scsi_qla_host *ha)
887{
888 uint16_t w, mwi;
889
890 dev_info(&ha->pdev->dev, "Configuring PCI space...\n");
891
892 pci_set_master(ha->pdev);
893 mwi = 0;
894 if (pci_set_mwi(ha->pdev))
895 mwi = PCI_COMMAND_INVALIDATE;
896 /*
897 * We want to respect framework's setting of PCI configuration space
898 * command register and also want to make sure that all bits of
899 * interest to us are properly set in command register.
900 */
901 pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
902 w |= mwi | (PCI_COMMAND_PARITY | PCI_COMMAND_SERR);
903 w &= ~PCI_COMMAND_INTX_DISABLE;
904 pci_write_config_word(ha->pdev, PCI_COMMAND, w);
905}
906
907static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
908{
909 int status = QLA_ERROR;
910 uint32_t max_wait_time;
911 unsigned long flags;
912 uint32_t mbox_status;
913
914 dev_info(&ha->pdev->dev, "Starting firmware ...\n");
915
916 /*
917 * Start firmware from flash ROM
918 *
919 * WORKAROUND: Stuff a non-constant value that the firmware can
920 * use as a seed for a random number generator in MB7 prior to
921 * setting BOOT_ENABLE. Fixes problem where the TCP
922 * connections use the same TCP ports after each reboot,
923 * causing some connections to not get re-established.
924 */
925 DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
926 ha->host_no, __func__));
927
928 spin_lock_irqsave(&ha->hardware_lock, flags);
929 writel(jiffies, &ha->reg->mailbox[7]);
930 if (is_qla4022(ha))
931 writel(set_rmask(NVR_WRITE_ENABLE),
932 &ha->reg->u1.isp4022.nvram);
933
934 writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
935 readl(&ha->reg->ctrl_status);
936 spin_unlock_irqrestore(&ha->hardware_lock, flags);
937
938 /* Wait for firmware to come UP. */
939 max_wait_time = FIRMWARE_UP_TOV * 4;
940 do {
941 uint32_t ctrl_status;
942
943 spin_lock_irqsave(&ha->hardware_lock, flags);
944 ctrl_status = readw(&ha->reg->ctrl_status);
945 mbox_status = readw(&ha->reg->mailbox[0]);
946 spin_unlock_irqrestore(&ha->hardware_lock, flags);
947
948 if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
949 break;
950 if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
951 break;
952
953 DEBUG2(printk("scsi%ld: %s: Waiting for boot firmware to "
954 "complete... ctrl_sts=0x%x, remaining=%d\n",
955 ha->host_no, __func__, ctrl_status,
956 max_wait_time));
957
958 msleep(250);
959 } while ((max_wait_time--));
960
961 if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
962 DEBUG(printk("scsi%ld: %s: Firmware has started\n",
963 ha->host_no, __func__));
964
965 spin_lock_irqsave(&ha->hardware_lock, flags);
966 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
967 &ha->reg->ctrl_status);
968 readl(&ha->reg->ctrl_status);
969 spin_unlock_irqrestore(&ha->hardware_lock, flags);
970
971 status = QLA_SUCCESS;
972 } else {
973 printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
974 "- mbox status 0x%x\n", ha->host_no, __func__,
975 mbox_status);
976 status = QLA_ERROR;
977 }
978 return status;
979}
980
981static int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
982{
983#define QL4_LOCK_DRVR_WAIT 300
984#define QL4_LOCK_DRVR_SLEEP 100
985
986 int drvr_wait = QL4_LOCK_DRVR_WAIT;
987 while (drvr_wait) {
988 if (ql4xxx_lock_drvr(a) == 0) {
989 msleep(QL4_LOCK_DRVR_SLEEP);
990 if (drvr_wait) {
991 DEBUG2(printk("scsi%ld: %s: Waiting for "
992 "Global Init Semaphore...n",
993 a->host_no,
994 __func__));
995 }
996 drvr_wait -= QL4_LOCK_DRVR_SLEEP;
997 } else {
998 DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
999 "acquired.n", a->host_no, __func__));
1000 return QLA_SUCCESS;
1001 }
1002 }
1003 return QLA_ERROR;
1004}
1005
1006/**
1007 * qla4xxx_start_firmware - starts qla4xxx firmware
1008 * @ha: Pointer to host adapter structure.
1009 *
1010 * This routine performs the neccessary steps to start the firmware for
1011 * the QLA4010 adapter.
1012 **/
1013static int qla4xxx_start_firmware(struct scsi_qla_host *ha)
1014{
1015 unsigned long flags = 0;
1016 uint32_t mbox_status;
1017 int status = QLA_ERROR;
1018 int soft_reset = 1;
1019 int config_chip = 0;
1020
1021 if (is_qla4010(ha)){
1022 if (qla4010_get_topcat_presence(ha) != QLA_SUCCESS)
1023 return QLA_ERROR;
1024 }
1025
1026 if (is_qla4022(ha))
1027 ql4xxx_set_mac_number(ha);
1028
1029 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1030 return QLA_ERROR;
1031
1032 spin_lock_irqsave(&ha->hardware_lock, flags);
1033
1034 DEBUG2(printk("scsi%ld: %s: port_ctrl = 0x%08X\n", ha->host_no,
1035 __func__, readw(isp_port_ctrl(ha))));
1036 DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
1037 __func__, readw(isp_port_status(ha))));
1038
1039 /* Is Hardware already initialized? */
1040 if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
1041 DEBUG(printk("scsi%ld: %s: Hardware has already been "
1042 "initialized\n", ha->host_no, __func__));
1043
1044 /* Receive firmware boot acknowledgement */
1045 mbox_status = readw(&ha->reg->mailbox[0]);
1046
1047 DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
1048 "0x%x\n", ha->host_no, __func__, mbox_status));
1049
1050 /* Is firmware already booted? */
1051 if (mbox_status == 0) {
1052 /* F/W not running, must be config by net driver */
1053 config_chip = 1;
1054 soft_reset = 0;
1055 } else {
1056 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
1057 &ha->reg->ctrl_status);
1058 readl(&ha->reg->ctrl_status);
1059 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1060 if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
1061 DEBUG2(printk("scsi%ld: %s: Get firmware "
1062 "state -- state = 0x%x\n",
1063 ha->host_no,
1064 __func__, ha->firmware_state));
1065 /* F/W is running */
1066 if (ha->firmware_state &
1067 FW_STATE_CONFIG_WAIT) {
1068 DEBUG2(printk("scsi%ld: %s: Firmware "
1069 "in known state -- "
1070 "config and "
1071 "boot, state = 0x%x\n",
1072 ha->host_no, __func__,
1073 ha->firmware_state));
1074 config_chip = 1;
1075 soft_reset = 0;
1076 }
1077 } else {
1078 DEBUG2(printk("scsi%ld: %s: Firmware in "
1079 "unknown state -- resetting,"
1080 " state = "
1081 "0x%x\n", ha->host_no, __func__,
1082 ha->firmware_state));
1083 }
1084 spin_lock_irqsave(&ha->hardware_lock, flags);
1085 }
1086 } else {
1087 DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
1088 "started - resetting\n", ha->host_no, __func__));
1089 }
1090 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1091
1092 DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
1093 ha->host_no, __func__, soft_reset, config_chip));
1094 if (soft_reset) {
1095 DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
1096 __func__));
1097 status = qla4xxx_soft_reset(ha);
1098 if (status == QLA_ERROR) {
1099 DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
1100 ha->host_no, __func__));
1101 ql4xxx_unlock_drvr(ha);
1102 return QLA_ERROR;
1103 }
1104 config_chip = 1;
1105
1106 /* Reset clears the semaphore, so aquire again */
1107 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1108 return QLA_ERROR;
1109 }
1110
1111 if (config_chip) {
1112 if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
1113 status = qla4xxx_start_firmware_from_flash(ha);
1114 }
1115
1116 ql4xxx_unlock_drvr(ha);
1117 if (status == QLA_SUCCESS) {
1118 qla4xxx_get_fw_version(ha);
1119 if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
1120 qla4xxx_get_crash_record(ha);
1121 } else {
1122 DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
1123 ha->host_no, __func__));
1124 }
1125 return status;
1126}
1127
1128
1129/**
1130 * qla4xxx_initialize_adapter - initiailizes hba
1131 * @ha: Pointer to host adapter structure.
1132 * @renew_ddb_list: Indicates what to do with the adapter's ddb list
1133 * after adapter recovery has completed.
1134 * 0=preserve ddb list, 1=destroy and rebuild ddb list
1135 *
1136 * This routine parforms all of the steps necessary to initialize the adapter.
1137 *
1138 **/
1139int qla4xxx_initialize_adapter(struct scsi_qla_host *ha,
1140 uint8_t renew_ddb_list)
1141{
1142 int status = QLA_ERROR;
1143 int8_t ip_address[IP_ADDR_LEN] = {0} ;
1144
1145 ha->eeprom_cmd_data = 0;
1146
1147 qla4x00_pci_config(ha);
1148
1149 qla4xxx_disable_intrs(ha);
1150
1151 /* Initialize the Host adapter request/response queues and firmware */
1152 if (qla4xxx_start_firmware(ha) == QLA_ERROR)
1153 return status;
1154
1155 if (qla4xxx_validate_mac_address(ha) == QLA_ERROR)
1156 return status;
1157
1158 if (qla4xxx_init_local_data(ha) == QLA_ERROR)
1159 return status;
1160
1161 status = qla4xxx_init_firmware(ha);
1162 if (status == QLA_ERROR)
1163 return status;
1164
1165 /*
1166 * FW is waiting to get an IP address from DHCP server: Skip building
1167 * the ddb_list and wait for DHCP lease acquired aen to come in
1168 * followed by 0x8014 aen" to trigger the tgt discovery process.
1169 */
1170 if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS)
1171 return status;
1172
1173 /* Skip device discovery if ip and subnet is zero */
1174 if (memcmp(ha->ip_address, ip_address, IP_ADDR_LEN) == 0 ||
1175 memcmp(ha->subnet_mask, ip_address, IP_ADDR_LEN) == 0)
1176 return status;
1177
1178 if (renew_ddb_list == PRESERVE_DDB_LIST) {
1179 /*
1180 * We want to preserve lun states (i.e. suspended, etc.)
1181 * for recovery initiated by the driver. So just update
1182 * the device states for the existing ddb_list.
1183 */
1184 qla4xxx_reinitialize_ddb_list(ha);
1185 } else if (renew_ddb_list == REBUILD_DDB_LIST) {
1186 /*
1187 * We want to build the ddb_list from scratch during
1188 * driver initialization and recovery initiated by the
1189 * INT_HBA_RESET IOCTL.
1190 */
1191 status = qla4xxx_initialize_ddb_list(ha);
1192 if (status == QLA_ERROR) {
1193 DEBUG2(printk("%s(%ld) Error occurred during build"
1194 "ddb list\n", __func__, ha->host_no));
1195 goto exit_init_hba;
1196 }
1197
1198 }
1199 if (!ha->tot_ddbs) {
1200 DEBUG2(printk("scsi%ld: Failed to initialize devices or none "
1201 "present in Firmware device database\n",
1202 ha->host_no));
1203 }
1204
1205 exit_init_hba:
1206 return status;
1207
1208}
1209
1210/**
1211 * qla4xxx_add_device_dynamically - ddb addition due to an AEN
1212 * @ha: Pointer to host adapter structure.
1213 * @fw_ddb_index: Firmware's device database index
1214 *
1215 * This routine processes adds a device as a result of an 8014h AEN.
1216 **/
1217static void qla4xxx_add_device_dynamically(struct scsi_qla_host *ha,
1218 uint32_t fw_ddb_index)
1219{
1220 struct ddb_entry * ddb_entry;
1221
1222 /* First allocate a device structure */
1223 ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index);
1224 if (ddb_entry == NULL) {
1225 DEBUG2(printk(KERN_WARNING
1226 "scsi%ld: Unable to allocate memory to add "
1227 "fw_ddb_index %d\n", ha->host_no, fw_ddb_index));
1228 return;
1229 }
1230
1231 if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
1232 QLA_ERROR) {
1233 ha->fw_ddb_index_map[fw_ddb_index] =
1234 (struct ddb_entry *)INVALID_ENTRY;
1235 DEBUG2(printk(KERN_WARNING
1236 "scsi%ld: failed to add new device at index "
1237 "[%d]\n Unable to retrieve fw ddb entry\n",
1238 ha->host_no, fw_ddb_index));
1239 qla4xxx_free_ddb(ha, ddb_entry);
1240 return;
1241 }
1242
1243 if (qla4xxx_add_sess(ddb_entry)) {
1244 DEBUG2(printk(KERN_WARNING
1245 "scsi%ld: failed to add new device at index "
1246 "[%d]\n Unable to add connection and session\n",
1247 ha->host_no, fw_ddb_index));
1248 qla4xxx_free_ddb(ha, ddb_entry);
1249 }
1250}
1251
1252/**
1253 * qla4xxx_process_ddb_changed - process ddb state change
1254 * @ha - Pointer to host adapter structure.
1255 * @fw_ddb_index - Firmware's device database index
1256 * @state - Device state
1257 *
1258 * This routine processes a Decive Database Changed AEN Event.
1259 **/
1260int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
1261 uint32_t fw_ddb_index, uint32_t state)
1262{
1263 struct ddb_entry * ddb_entry;
1264 uint32_t old_fw_ddb_device_state;
1265
1266 /* check for out of range index */
1267 if (fw_ddb_index >= MAX_DDB_ENTRIES)
1268 return QLA_ERROR;
1269
1270 /* Get the corresponging ddb entry */
1271 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
1272 /* Device does not currently exist in our database. */
1273 if (ddb_entry == NULL) {
1274 if (state == DDB_DS_SESSION_ACTIVE)
1275 qla4xxx_add_device_dynamically(ha, fw_ddb_index);
1276 return QLA_SUCCESS;
1277 }
1278
1279 /* Device already exists in our database. */
1280 old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
1281 DEBUG2(printk("scsi%ld: %s DDB - old state= 0x%x, new state=0x%x for "
1282 "index [%d]\n", ha->host_no, __func__,
1283 ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
1284 if (old_fw_ddb_device_state == state &&
1285 state == DDB_DS_SESSION_ACTIVE) {
1286 /* Do nothing, state not changed. */
1287 return QLA_SUCCESS;
1288 }
1289
1290 ddb_entry->fw_ddb_device_state = state;
1291 /* Device is back online. */
1292 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
1293 atomic_set(&ddb_entry->port_down_timer,
1294 ha->port_down_retry_count);
1295 atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
1296 atomic_set(&ddb_entry->relogin_retry_count, 0);
1297 atomic_set(&ddb_entry->relogin_timer, 0);
1298 clear_bit(DF_RELOGIN, &ddb_entry->flags);
1299 clear_bit(DF_NO_RELOGIN, &ddb_entry->flags);
1300 iscsi_if_create_session_done(ddb_entry->conn);
1301 /*
1302 * Change the lun state to READY in case the lun TIMEOUT before
1303 * the device came back.
1304 */
1305 } else {
1306 /* Device went away, try to relogin. */
1307 /* Mark device missing */
1308 if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
1309 qla4xxx_mark_device_missing(ha, ddb_entry);
1310 /*
1311 * Relogin if device state changed to a not active state.
1312 * However, do not relogin if this aen is a result of an IOCTL
1313 * logout (DF_NO_RELOGIN) or if this is a discovered device.
1314 */
1315 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_FAILED &&
1316 !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
1317 !test_bit(DF_NO_RELOGIN, &ddb_entry->flags) &&
1318 !test_bit(DF_ISNS_DISCOVERED, &ddb_entry->flags)) {
1319 /*
1320 * This triggers a relogin. After the relogin_timer
1321 * expires, the relogin gets scheduled. We must wait a
1322 * minimum amount of time since receiving an 0x8014 AEN
1323 * with failed device_state or a logout response before
1324 * we can issue another relogin.
1325 */
1326 /* Firmware padds this timeout: (time2wait +1).
1327 * Driver retry to login should be longer than F/W.
1328 * Otherwise F/W will fail
1329 * set_ddb() mbx cmd with 0x4005 since it still
1330 * counting down its time2wait.
1331 */
1332 atomic_set(&ddb_entry->relogin_timer, 0);
1333 atomic_set(&ddb_entry->retry_relogin_timer,
1334 ddb_entry->default_time2wait + 4);
1335 }
1336 }
1337
1338 return QLA_SUCCESS;
1339}
1340
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-21 03:02:06 -0500