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Linux 2.6.34-rc3
[pohmelfs.git] / drivers / scsi / qla4xxx / ql4_init.c
blob92329a461c6891e1a068d692ea4d233670ce7184
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 <scsi/iscsi_if.h>
9 #include "ql4_def.h"
10 #include "ql4_glbl.h"
11 #include "ql4_dbg.h"
12 #include "ql4_inline.h"
13
14 static struct ddb_entry * qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
15 uint32_t fw_ddb_index);
16
17 static void ql4xxx_set_mac_number(struct scsi_qla_host *ha)
18 {
19 uint32_t value;
20 uint8_t func_number;
21 unsigned long flags;
22
23 /* Get the function number */
24 spin_lock_irqsave(&ha->hardware_lock, flags);
25 value = readw(&ha->reg->ctrl_status);
26 spin_unlock_irqrestore(&ha->hardware_lock, flags);
27
28 func_number = (uint8_t) ((value >> 4) & 0x30);
29 switch (value & ISP_CONTROL_FN_MASK) {
30 case ISP_CONTROL_FN0_SCSI:
31 ha->mac_index = 1;
32 break;
33 case ISP_CONTROL_FN1_SCSI:
34 ha->mac_index = 3;
35 break;
36 default:
37 DEBUG2(printk("scsi%ld: %s: Invalid function number, "
38 "ispControlStatus = 0x%x\n", ha->host_no,
39 __func__, value));
40 break;
41 }
42 DEBUG2(printk("scsi%ld: %s: mac_index %d.\n", ha->host_no, __func__,
43 ha->mac_index));
44 }
45
46 /**
47 * qla4xxx_free_ddb - deallocate ddb
48 * @ha: pointer to host adapter structure.
49 * @ddb_entry: pointer to device database entry
50 *
51 * This routine deallocates and unlinks the specified ddb_entry from the
52 * adapter's
53 **/
54 static void qla4xxx_free_ddb(struct scsi_qla_host *ha,
55 struct ddb_entry *ddb_entry)
56 {
57 /* Remove device entry from list */
58 list_del_init(&ddb_entry->list);
59
60 /* Remove device pointer from index mapping arrays */
61 ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] =
62 (struct ddb_entry *) INVALID_ENTRY;
63 ha->tot_ddbs--;
64
65 /* Free memory and scsi-ml struct for device entry */
66 qla4xxx_destroy_sess(ddb_entry);
67 }
68
69 /**
70 * qla4xxx_free_ddb_list - deallocate all ddbs
71 * @ha: pointer to host adapter structure.
72 *
73 * This routine deallocates and removes all devices on the sppecified adapter.
74 **/
75 void qla4xxx_free_ddb_list(struct scsi_qla_host *ha)
76 {
77 struct list_head *ptr;
78 struct ddb_entry *ddb_entry;
79
80 while (!list_empty(&ha->ddb_list)) {
81 ptr = ha->ddb_list.next;
82 /* Free memory for device entry and remove */
83 ddb_entry = list_entry(ptr, struct ddb_entry, list);
84 qla4xxx_free_ddb(ha, ddb_entry);
85 }
86 }
87
88 /**
89 * qla4xxx_init_rings - initialize hw queues
90 * @ha: pointer to host adapter structure.
91 *
92 * This routine initializes the internal queues for the specified adapter.
93 * The QLA4010 requires us to restart the queues at index 0.
94 * The QLA4000 doesn't care, so just default to QLA4010's requirement.
95 **/
96 int qla4xxx_init_rings(struct scsi_qla_host *ha)
97 {
98 unsigned long flags = 0;
99
100 /* Initialize request queue. */
101 spin_lock_irqsave(&ha->hardware_lock, flags);
102 ha->request_out = 0;
103 ha->request_in = 0;
104 ha->request_ptr = &ha->request_ring[ha->request_in];
105 ha->req_q_count = REQUEST_QUEUE_DEPTH;
106
107 /* Initialize response queue. */
108 ha->response_in = 0;
109 ha->response_out = 0;
110 ha->response_ptr = &ha->response_ring[ha->response_out];
111
112 /*
113 * Initialize DMA Shadow registers. The firmware is really supposed to
114 * take care of this, but on some uniprocessor systems, the shadow
115 * registers aren't cleared-- causing the interrupt_handler to think
116 * there are responses to be processed when there aren't.
117 */
118 ha->shadow_regs->req_q_out = __constant_cpu_to_le32(0);
119 ha->shadow_regs->rsp_q_in = __constant_cpu_to_le32(0);
120 wmb();
121
122 writel(0, &ha->reg->req_q_in);
123 writel(0, &ha->reg->rsp_q_out);
124 readl(&ha->reg->rsp_q_out);
125
126 spin_unlock_irqrestore(&ha->hardware_lock, flags);
127
128 return QLA_SUCCESS;
129 }
130
131 /**
132 * qla4xxx_validate_mac_address - validate adapter MAC address(es)
133 * @ha: pointer to host adapter structure.
134 *
135 **/
136 static int qla4xxx_validate_mac_address(struct scsi_qla_host *ha)
137 {
138 struct flash_sys_info *sys_info;
139 dma_addr_t sys_info_dma;
140 int status = QLA_ERROR;
141
142 sys_info = dma_alloc_coherent(&ha->pdev->dev, sizeof(*sys_info),
143 &sys_info_dma, GFP_KERNEL);
144 if (sys_info == NULL) {
145 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
146 ha->host_no, __func__));
147
148 goto exit_validate_mac_no_free;
149 }
150 memset(sys_info, 0, sizeof(*sys_info));
151
152 /* Get flash sys info */
153 if (qla4xxx_get_flash(ha, sys_info_dma, FLASH_OFFSET_SYS_INFO,
154 sizeof(*sys_info)) != QLA_SUCCESS) {
155 DEBUG2(printk("scsi%ld: %s: get_flash FLASH_OFFSET_SYS_INFO "
156 "failed\n", ha->host_no, __func__));
157
158 goto exit_validate_mac;
159 }
160
161 /* Save M.A.C. address & serial_number */
162 memcpy(ha->my_mac, &sys_info->physAddr[0].address[0],
163 min(sizeof(ha->my_mac),
164 sizeof(sys_info->physAddr[0].address)));
165 memcpy(ha->serial_number, &sys_info->acSerialNumber,
166 min(sizeof(ha->serial_number),
167 sizeof(sys_info->acSerialNumber)));
168
169 status = QLA_SUCCESS;
170
171 exit_validate_mac:
172 dma_free_coherent(&ha->pdev->dev, sizeof(*sys_info), sys_info,
173 sys_info_dma);
174
175 exit_validate_mac_no_free:
176 return status;
177 }
178
179 /**
180 * qla4xxx_init_local_data - initialize adapter specific local data
181 * @ha: pointer to host adapter structure.
182 *
183 **/
184 static int qla4xxx_init_local_data(struct scsi_qla_host *ha)
185 {
186 /* Initilize aen queue */
187 ha->aen_q_count = MAX_AEN_ENTRIES;
188
189 return qla4xxx_get_firmware_status(ha);
190 }
191
192 static int qla4xxx_fw_ready(struct scsi_qla_host *ha)
193 {
194 uint32_t timeout_count;
195 int ready = 0;
196
197 DEBUG2(dev_info(&ha->pdev->dev, "Waiting for Firmware Ready..\n"));
198 for (timeout_count = ADAPTER_INIT_TOV; timeout_count > 0;
199 timeout_count--) {
200 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
201 qla4xxx_get_dhcp_ip_address(ha);
202
203 /* Get firmware state. */
204 if (qla4xxx_get_firmware_state(ha) != QLA_SUCCESS) {
205 DEBUG2(printk("scsi%ld: %s: unable to get firmware "
206 "state\n", ha->host_no, __func__));
207 break;
208
209 }
210
211 if (ha->firmware_state & FW_STATE_ERROR) {
212 DEBUG2(printk("scsi%ld: %s: an unrecoverable error has"
213 " occurred\n", ha->host_no, __func__));
214 break;
215
216 }
217 if (ha->firmware_state & FW_STATE_CONFIG_WAIT) {
218 /*
219 * The firmware has not yet been issued an Initialize
220 * Firmware command, so issue it now.
221 */
222 if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR)
223 break;
224
225 /* Go back and test for ready state - no wait. */
226 continue;
227 }
228
229 if (ha->firmware_state == FW_STATE_READY) {
230 DEBUG2(dev_info(&ha->pdev->dev, "Firmware Ready..\n"));
231 /* The firmware is ready to process SCSI commands. */
232 DEBUG2(dev_info(&ha->pdev->dev,
233 "scsi%ld: %s: MEDIA TYPE - %s\n",
234 ha->host_no,
235 __func__, (ha->addl_fw_state &
236 FW_ADDSTATE_OPTICAL_MEDIA)
237 != 0 ? "OPTICAL" : "COPPER"));
238 DEBUG2(dev_info(&ha->pdev->dev,
239 "scsi%ld: %s: DHCP STATE Enabled "
240 "%s\n",
241 ha->host_no, __func__,
242 (ha->addl_fw_state &
243 FW_ADDSTATE_DHCP_ENABLED) != 0 ?
244 "YES" : "NO"));
245 DEBUG2(dev_info(&ha->pdev->dev,
246 "scsi%ld: %s: LINK %s\n",
247 ha->host_no, __func__,
248 (ha->addl_fw_state &
249 FW_ADDSTATE_LINK_UP) != 0 ?
250 "UP" : "DOWN"));
251 DEBUG2(dev_info(&ha->pdev->dev,
252 "scsi%ld: %s: iSNS Service "
253 "Started %s\n",
254 ha->host_no, __func__,
255 (ha->addl_fw_state &
256 FW_ADDSTATE_ISNS_SVC_ENABLED) != 0 ?
257 "YES" : "NO"));
258
259 ready = 1;
260 break;
261 }
262 DEBUG2(printk("scsi%ld: %s: waiting on fw, state=%x:%x - "
263 "seconds expired= %d\n", ha->host_no, __func__,
264 ha->firmware_state, ha->addl_fw_state,
265 timeout_count));
266 if (is_qla4032(ha) &&
267 !(ha->addl_fw_state & FW_ADDSTATE_LINK_UP) &&
268 (timeout_count < ADAPTER_INIT_TOV - 5)) {
269 break;
270 }
271
272 msleep(1000);
273 } /* end of for */
274
275 if (timeout_count == 0)
276 DEBUG2(printk("scsi%ld: %s: FW Initialization timed out!\n",
277 ha->host_no, __func__));
278
279 if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS) {
280 DEBUG2(printk("scsi%ld: %s: FW is reporting its waiting to"
281 " grab an IP address from DHCP server\n",
282 ha->host_no, __func__));
283 ready = 1;
284 }
285
286 return ready;
287 }
288
289 /**
290 * qla4xxx_init_firmware - initializes the firmware.
291 * @ha: pointer to host adapter structure.
292 *
293 **/
294 static int qla4xxx_init_firmware(struct scsi_qla_host *ha)
295 {
296 int status = QLA_ERROR;
297
298 dev_info(&ha->pdev->dev, "Initializing firmware..\n");
299 if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR) {
300 DEBUG2(printk("scsi%ld: %s: Failed to initialize firmware "
301 "control block\n", ha->host_no, __func__));
302 return status;
303 }
304 if (!qla4xxx_fw_ready(ha))
305 return status;
306
307 return qla4xxx_get_firmware_status(ha);
308 }
309
310 static struct ddb_entry* qla4xxx_get_ddb_entry(struct scsi_qla_host *ha,
311 uint32_t fw_ddb_index,
312 uint32_t *new_tgt)
313 {
314 struct dev_db_entry *fw_ddb_entry = NULL;
315 dma_addr_t fw_ddb_entry_dma;
316 struct ddb_entry *ddb_entry = NULL;
317 int found = 0;
318 uint32_t device_state;
319
320 *new_tgt = 0;
321 /* Make sure the dma buffer is valid */
322 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
323 sizeof(*fw_ddb_entry),
324 &fw_ddb_entry_dma, GFP_KERNEL);
325 if (fw_ddb_entry == NULL) {
326 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
327 ha->host_no, __func__));
328 return NULL;
329 }
330
331 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
332 fw_ddb_entry_dma, NULL, NULL,
333 &device_state, NULL, NULL, NULL) ==
334 QLA_ERROR) {
335 DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
336 "fw_ddb_index %d\n", ha->host_no, __func__,
337 fw_ddb_index));
338 return NULL;
339 }
340
341 /* Allocate DDB if not already allocated. */
342 DEBUG2(printk("scsi%ld: %s: Looking for ddb[%d]\n", ha->host_no,
343 __func__, fw_ddb_index));
344 list_for_each_entry(ddb_entry, &ha->ddb_list, list) {
345 if ((memcmp(ddb_entry->iscsi_name, fw_ddb_entry->iscsi_name,
346 ISCSI_NAME_SIZE) == 0) &&
347 (ddb_entry->tpgt ==
348 le32_to_cpu(fw_ddb_entry->tgt_portal_grp)) &&
349 (memcmp(ddb_entry->isid, fw_ddb_entry->isid,
350 sizeof(ddb_entry->isid)) == 0)) {
351 found++;
352 break;
353 }
354 }
355
356 if (!found) {
357 DEBUG2(printk("scsi%ld: %s: ddb[%d] not found - allocating "
358 "new ddb\n", ha->host_no, __func__,
359 fw_ddb_index));
360 *new_tgt = 1;
361 ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
362 }
363
364 /* if not found allocate new ddb */
365 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
366 fw_ddb_entry_dma);
367
368 return ddb_entry;
369 }
370
371 /**
372 * qla4xxx_update_ddb_entry - update driver's internal ddb
373 * @ha: pointer to host adapter structure.
374 * @ddb_entry: pointer to device database structure to be filled
375 * @fw_ddb_index: index of the ddb entry in fw ddb table
376 *
377 * This routine updates the driver's internal device database entry
378 * with information retrieved from the firmware's device database
379 * entry for the specified device. The ddb_entry->fw_ddb_index field
380 * must be initialized prior to calling this routine
381 *
382 **/
383 static int qla4xxx_update_ddb_entry(struct scsi_qla_host *ha,
384 struct ddb_entry *ddb_entry,
385 uint32_t fw_ddb_index)
386 {
387 struct dev_db_entry *fw_ddb_entry = NULL;
388 dma_addr_t fw_ddb_entry_dma;
389 int status = QLA_ERROR;
390
391 if (ddb_entry == NULL) {
392 DEBUG2(printk("scsi%ld: %s: ddb_entry is NULL\n", ha->host_no,
393 __func__));
394 goto exit_update_ddb;
395 }
396
397 /* Make sure the dma buffer is valid */
398 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
399 sizeof(*fw_ddb_entry),
400 &fw_ddb_entry_dma, GFP_KERNEL);
401 if (fw_ddb_entry == NULL) {
402 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
403 ha->host_no, __func__));
404
405 goto exit_update_ddb;
406 }
407
408 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
409 fw_ddb_entry_dma, NULL, NULL,
410 &ddb_entry->fw_ddb_device_state, NULL,
411 &ddb_entry->tcp_source_port_num,
412 &ddb_entry->connection_id) ==
413 QLA_ERROR) {
414 DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
415 "fw_ddb_index %d\n", ha->host_no, __func__,
416 fw_ddb_index));
417
418 goto exit_update_ddb;
419 }
420
421 status = QLA_SUCCESS;
422 ddb_entry->target_session_id = le16_to_cpu(fw_ddb_entry->tsid);
423 ddb_entry->task_mgmt_timeout =
424 le16_to_cpu(fw_ddb_entry->def_timeout);
425 ddb_entry->CmdSn = 0;
426 ddb_entry->exe_throttle = le16_to_cpu(fw_ddb_entry->exec_throttle);
427 ddb_entry->default_relogin_timeout =
428 le16_to_cpu(fw_ddb_entry->def_timeout);
429 ddb_entry->default_time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
430
431 /* Update index in case it changed */
432 ddb_entry->fw_ddb_index = fw_ddb_index;
433 ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
434
435 ddb_entry->port = le16_to_cpu(fw_ddb_entry->port);
436 ddb_entry->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
437 memcpy(ddb_entry->isid, fw_ddb_entry->isid, sizeof(ddb_entry->isid));
438
439 memcpy(&ddb_entry->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
440 min(sizeof(ddb_entry->iscsi_name),
441 sizeof(fw_ddb_entry->iscsi_name)));
442 memcpy(&ddb_entry->ip_addr[0], &fw_ddb_entry->ip_addr[0],
443 min(sizeof(ddb_entry->ip_addr), sizeof(fw_ddb_entry->ip_addr)));
444
445 DEBUG2(printk("scsi%ld: %s: ddb[%d] - State= %x status= %d.\n",
446 ha->host_no, __func__, fw_ddb_index,
447 ddb_entry->fw_ddb_device_state, status));
448
449 exit_update_ddb:
450 if (fw_ddb_entry)
451 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
452 fw_ddb_entry, fw_ddb_entry_dma);
453
454 return status;
455 }
456
457 /**
458 * qla4xxx_alloc_ddb - allocate device database entry
459 * @ha: Pointer to host adapter structure.
460 * @fw_ddb_index: Firmware's device database index
461 *
462 * This routine allocates a ddb_entry, ititializes some values, and
463 * inserts it into the ddb list.
464 **/
465 static struct ddb_entry * qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
466 uint32_t fw_ddb_index)
467 {
468 struct ddb_entry *ddb_entry;
469
470 DEBUG2(printk("scsi%ld: %s: fw_ddb_index [%d]\n", ha->host_no,
471 __func__, fw_ddb_index));
472
473 ddb_entry = qla4xxx_alloc_sess(ha);
474 if (ddb_entry == NULL) {
475 DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
476 "to add fw_ddb_index [%d]\n",
477 ha->host_no, __func__, fw_ddb_index));
478 return ddb_entry;
479 }
480
481 ddb_entry->fw_ddb_index = fw_ddb_index;
482 atomic_set(&ddb_entry->port_down_timer, ha->port_down_retry_count);
483 atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
484 atomic_set(&ddb_entry->relogin_timer, 0);
485 atomic_set(&ddb_entry->relogin_retry_count, 0);
486 atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
487 list_add_tail(&ddb_entry->list, &ha->ddb_list);
488 ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
489 ha->tot_ddbs++;
490
491 return ddb_entry;
492 }
493
494 /**
495 * qla4xxx_configure_ddbs - builds driver ddb list
496 * @ha: Pointer to host adapter structure.
497 *
498 * This routine searches for all valid firmware ddb entries and builds
499 * an internal ddb list. Ddbs that are considered valid are those with
500 * a device state of SESSION_ACTIVE.
501 **/
502 static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
503 {
504 int status = QLA_SUCCESS;
505 uint32_t fw_ddb_index = 0;
506 uint32_t next_fw_ddb_index = 0;
507 uint32_t ddb_state;
508 uint32_t conn_err, err_code;
509 struct ddb_entry *ddb_entry;
510 uint32_t new_tgt;
511
512 dev_info(&ha->pdev->dev, "Initializing DDBs ...\n");
513 for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES;
514 fw_ddb_index = next_fw_ddb_index) {
515 /* First, let's see if a device exists here */
516 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, NULL, 0, NULL,
517 &next_fw_ddb_index, &ddb_state,
518 &conn_err, NULL, NULL) ==
519 QLA_ERROR) {
520 DEBUG2(printk("scsi%ld: %s: get_ddb_entry, "
521 "fw_ddb_index %d failed", ha->host_no,
522 __func__, fw_ddb_index));
523 return QLA_ERROR;
524 }
525
526 DEBUG2(printk("scsi%ld: %s: Getting DDB[%d] ddbstate=0x%x, "
527 "next_fw_ddb_index=%d.\n", ha->host_no, __func__,
528 fw_ddb_index, ddb_state, next_fw_ddb_index));
529
530 /* Issue relogin, if necessary. */
531 if (ddb_state == DDB_DS_SESSION_FAILED ||
532 ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) {
533 /* Try and login to device */
534 DEBUG2(printk("scsi%ld: %s: Login to DDB[%d]\n",
535 ha->host_no, __func__, fw_ddb_index));
536 err_code = ((conn_err & 0x00ff0000) >> 16);
537 if (err_code == 0x1c || err_code == 0x06) {
538 DEBUG2(printk("scsi%ld: %s send target "
539 "completed "
540 "or access denied failure\n",
541 ha->host_no, __func__));
542 } else {
543 qla4xxx_set_ddb_entry(ha, fw_ddb_index, 0);
544 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index,
545 NULL, 0, NULL, &next_fw_ddb_index,
546 &ddb_state, &conn_err, NULL, NULL)
547 == QLA_ERROR) {
548 DEBUG2(printk("scsi%ld: %s:"
549 "get_ddb_entry %d failed\n",
550 ha->host_no,
551 __func__, fw_ddb_index));
552 return QLA_ERROR;
553 }
554 }
555 }
556
557 if (ddb_state != DDB_DS_SESSION_ACTIVE)
558 goto next_one;
559 /*
560 * if fw_ddb with session active state found,
561 * add to ddb_list
562 */
563 DEBUG2(printk("scsi%ld: %s: DDB[%d] added to list\n",
564 ha->host_no, __func__, fw_ddb_index));
565
566 /* Add DDB to internal our ddb list. */
567 ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index, &new_tgt);
568 if (ddb_entry == NULL) {
569 DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
570 "for device at fw_ddb_index %d\n",
571 ha->host_no, __func__, fw_ddb_index));
572 return QLA_ERROR;
573 }
574 /* Fill in the device structure */
575 if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
576 QLA_ERROR) {
577 ha->fw_ddb_index_map[fw_ddb_index] =
578 (struct ddb_entry *)INVALID_ENTRY;
579
580
581 DEBUG2(printk("scsi%ld: %s: update_ddb_entry failed "
582 "for fw_ddb_index %d.\n",
583 ha->host_no, __func__, fw_ddb_index));
584 return QLA_ERROR;
585 }
586
587 next_one:
588 /* We know we've reached the last device when
589 * next_fw_ddb_index is 0 */
590 if (next_fw_ddb_index == 0)
591 break;
592 }
593
594 dev_info(&ha->pdev->dev, "DDB list done..\n");
595
596 return status;
597 }
598
599 struct qla4_relog_scan {
600 int halt_wait;
601 uint32_t conn_err;
602 uint32_t err_code;
603 uint32_t fw_ddb_index;
604 uint32_t next_fw_ddb_index;
605 uint32_t fw_ddb_device_state;
606 };
607
608 static int qla4_test_rdy(struct scsi_qla_host *ha, struct qla4_relog_scan *rs)
609 {
610 struct ddb_entry *ddb_entry;
611
612 /*
613 * Don't want to do a relogin if connection
614 * error is 0x1c.
615 */
616 rs->err_code = ((rs->conn_err & 0x00ff0000) >> 16);
617 if (rs->err_code == 0x1c || rs->err_code == 0x06) {
618 DEBUG2(printk(
619 "scsi%ld: %s send target"
620 " completed or "
621 "access denied failure\n",
622 ha->host_no, __func__));
623 } else {
624 /* We either have a device that is in
625 * the process of relogging in or a
626 * device that is waiting to be
627 * relogged in */
628 rs->halt_wait = 0;
629
630 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
631 rs->fw_ddb_index);
632 if (ddb_entry == NULL)
633 return QLA_ERROR;
634
635 if (ddb_entry->dev_scan_wait_to_start_relogin != 0
636 && time_after_eq(jiffies,
637 ddb_entry->
638 dev_scan_wait_to_start_relogin))
639 {
640 ddb_entry->dev_scan_wait_to_start_relogin = 0;
641 qla4xxx_set_ddb_entry(ha, rs->fw_ddb_index, 0);
642 }
643 }
644 return QLA_SUCCESS;
645 }
646
647 static int qla4_scan_for_relogin(struct scsi_qla_host *ha,
648 struct qla4_relog_scan *rs)
649 {
650 int error;
651
652 /* scan for relogins
653 * ----------------- */
654 for (rs->fw_ddb_index = 0; rs->fw_ddb_index < MAX_DDB_ENTRIES;
655 rs->fw_ddb_index = rs->next_fw_ddb_index) {
656 if (qla4xxx_get_fwddb_entry(ha, rs->fw_ddb_index, NULL, 0,
657 NULL, &rs->next_fw_ddb_index,
658 &rs->fw_ddb_device_state,
659 &rs->conn_err, NULL, NULL)
660 == QLA_ERROR)
661 return QLA_ERROR;
662
663 if (rs->fw_ddb_device_state == DDB_DS_LOGIN_IN_PROCESS)
664 rs->halt_wait = 0;
665
666 if (rs->fw_ddb_device_state == DDB_DS_SESSION_FAILED ||
667 rs->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE) {
668 error = qla4_test_rdy(ha, rs);
669 if (error)
670 return error;
671 }
672
673 /* We know we've reached the last device when
674 * next_fw_ddb_index is 0 */
675 if (rs->next_fw_ddb_index == 0)
676 break;
677 }
678 return QLA_SUCCESS;
679 }
680
681 /**
682 * qla4xxx_devices_ready - wait for target devices to be logged in
683 * @ha: pointer to adapter structure
684 *
685 * This routine waits up to ql4xdiscoverywait seconds
686 * F/W database during driver load time.
687 **/
688 static int qla4xxx_devices_ready(struct scsi_qla_host *ha)
689 {
690 int error;
691 unsigned long discovery_wtime;
692 struct qla4_relog_scan rs;
693
694 discovery_wtime = jiffies + (ql4xdiscoverywait * HZ);
695
696 DEBUG(printk("Waiting (%d) for devices ...\n", ql4xdiscoverywait));
697 do {
698 /* poll for AEN. */
699 qla4xxx_get_firmware_state(ha);
700 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) {
701 /* Set time-between-relogin timer */
702 qla4xxx_process_aen(ha, RELOGIN_DDB_CHANGED_AENS);
703 }
704
705 /* if no relogins active or needed, halt discvery wait */
706 rs.halt_wait = 1;
707
708 error = qla4_scan_for_relogin(ha, &rs);
709
710 if (rs.halt_wait) {
711 DEBUG2(printk("scsi%ld: %s: Delay halted. Devices "
712 "Ready.\n", ha->host_no, __func__));
713 return QLA_SUCCESS;
714 }
715
716 msleep(2000);
717 } while (!time_after_eq(jiffies, discovery_wtime));
718
719 DEBUG3(qla4xxx_get_conn_event_log(ha));
720
721 return QLA_SUCCESS;
722 }
723
724 static void qla4xxx_flush_AENS(struct scsi_qla_host *ha)
725 {
726 unsigned long wtime;
727
728 /* Flush the 0x8014 AEN from the firmware as a result of
729 * Auto connect. We are basically doing get_firmware_ddb()
730 * to determine whether we need to log back in or not.
731 * Trying to do a set ddb before we have processed 0x8014
732 * will result in another set_ddb() for the same ddb. In other
733 * words there will be stale entries in the aen_q.
734 */
735 wtime = jiffies + (2 * HZ);
736 do {
737 if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS)
738 if (ha->firmware_state & (BIT_2 | BIT_0))
739 return;
740
741 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
742 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
743
744 msleep(1000);
745 } while (!time_after_eq(jiffies, wtime));
746
747 }
748
749 static int qla4xxx_initialize_ddb_list(struct scsi_qla_host *ha)
750 {
751 uint16_t fw_ddb_index;
752 int status = QLA_SUCCESS;
753
754 /* free the ddb list if is not empty */
755 if (!list_empty(&ha->ddb_list))
756 qla4xxx_free_ddb_list(ha);
757
758 for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES; fw_ddb_index++)
759 ha->fw_ddb_index_map[fw_ddb_index] =
760 (struct ddb_entry *)INVALID_ENTRY;
761
762 ha->tot_ddbs = 0;
763
764 qla4xxx_flush_AENS(ha);
765
766 /*
767 * First perform device discovery for active
768 * fw ddb indexes and build
769 * ddb list.
770 */
771 if ((status = qla4xxx_build_ddb_list(ha)) == QLA_ERROR)
772 return status;
773
774 /* Wait for an AEN */
775 qla4xxx_devices_ready(ha);
776
777 /*
778 * Targets can come online after the inital discovery, so processing
779 * the aens here will catch them.
780 */
781 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
782 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
783
784 return status;
785 }
786
787 /**
788 * qla4xxx_update_ddb_list - update the driver ddb list
789 * @ha: pointer to host adapter structure.
790 *
791 * This routine obtains device information from the F/W database after
792 * firmware or adapter resets. The device table is preserved.
793 **/
794 int qla4xxx_reinitialize_ddb_list(struct scsi_qla_host *ha)
795 {
796 int status = QLA_SUCCESS;
797 struct ddb_entry *ddb_entry, *detemp;
798
799 /* Update the device information for all devices. */
800 list_for_each_entry_safe(ddb_entry, detemp, &ha->ddb_list, list) {
801 qla4xxx_update_ddb_entry(ha, ddb_entry,
802 ddb_entry->fw_ddb_index);
803 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
804 atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
805 DEBUG2(printk ("scsi%ld: %s: ddb index [%d] marked "
806 "ONLINE\n", ha->host_no, __func__,
807 ddb_entry->fw_ddb_index));
808 } else if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
809 qla4xxx_mark_device_missing(ha, ddb_entry);
810 }
811 return status;
812 }
813
814 /**
815 * qla4xxx_relogin_device - re-establish session
816 * @ha: Pointer to host adapter structure.
817 * @ddb_entry: Pointer to device database entry
818 *
819 * This routine does a session relogin with the specified device.
820 * The ddb entry must be assigned prior to making this call.
821 **/
822 int qla4xxx_relogin_device(struct scsi_qla_host *ha,
823 struct ddb_entry * ddb_entry)
824 {
825 uint16_t relogin_timer;
826
827 relogin_timer = max(ddb_entry->default_relogin_timeout,
828 (uint16_t)RELOGIN_TOV);
829 atomic_set(&ddb_entry->relogin_timer, relogin_timer);
830
831 DEBUG2(printk("scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
832 ddb_entry->fw_ddb_index, relogin_timer));
833
834 qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index, 0);
835
836 return QLA_SUCCESS;
837 }
838
839 static int qla4xxx_config_nvram(struct scsi_qla_host *ha)
840 {
841 unsigned long flags;
842 union external_hw_config_reg extHwConfig;
843
844 DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
845 __func__));
846 if (ql4xxx_lock_flash(ha) != QLA_SUCCESS)
847 return QLA_ERROR;
848 if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
849 ql4xxx_unlock_flash(ha);
850 return QLA_ERROR;
851 }
852
853 /* Get EEPRom Parameters from NVRAM and validate */
854 dev_info(&ha->pdev->dev, "Configuring NVRAM ...\n");
855 if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
856 spin_lock_irqsave(&ha->hardware_lock, flags);
857 extHwConfig.Asuint32_t =
858 rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
859 spin_unlock_irqrestore(&ha->hardware_lock, flags);
860 } else {
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 /* Attempt to set defaults */
867 if (is_qla4010(ha))
868 extHwConfig.Asuint32_t = 0x1912;
869 else if (is_qla4022(ha) | is_qla4032(ha))
870 extHwConfig.Asuint32_t = 0x0023;
871 else
872 return QLA_ERROR;
873 }
874 DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
875 ha->host_no, __func__, extHwConfig.Asuint32_t));
876
877 spin_lock_irqsave(&ha->hardware_lock, flags);
878 writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
879 readl(isp_ext_hw_conf(ha));
880 spin_unlock_irqrestore(&ha->hardware_lock, flags);
881
882 ql4xxx_unlock_nvram(ha);
883 ql4xxx_unlock_flash(ha);
884
885 return QLA_SUCCESS;
886 }
887
888 static void qla4x00_pci_config(struct scsi_qla_host *ha)
889 {
890 uint16_t w;
891 int status;
892
893 dev_info(&ha->pdev->dev, "Configuring PCI space...\n");
894
895 pci_set_master(ha->pdev);
896 status = pci_set_mwi(ha->pdev);
897 /*
898 * We want to respect framework's setting of PCI configuration space
899 * command register and also want to make sure that all bits of
900 * interest to us are properly set in command register.
901 */
902 pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
903 w |= PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
904 w &= ~PCI_COMMAND_INTX_DISABLE;
905 pci_write_config_word(ha->pdev, PCI_COMMAND, w);
906 }
907
908 static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
909 {
910 int status = QLA_ERROR;
911 uint32_t max_wait_time;
912 unsigned long flags;
913 uint32_t mbox_status;
914
915 dev_info(&ha->pdev->dev, "Starting firmware ...\n");
916
917 /*
918 * Start firmware from flash ROM
919 *
920 * WORKAROUND: Stuff a non-constant value that the firmware can
921 * use as a seed for a random number generator in MB7 prior to
922 * setting BOOT_ENABLE. Fixes problem where the TCP
923 * connections use the same TCP ports after each reboot,
924 * causing some connections to not get re-established.
925 */
926 DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
927 ha->host_no, __func__));
928
929 spin_lock_irqsave(&ha->hardware_lock, flags);
930 writel(jiffies, &ha->reg->mailbox[7]);
931 if (is_qla4022(ha) | is_qla4032(ha))
932 writel(set_rmask(NVR_WRITE_ENABLE),
933 &ha->reg->u1.isp4022.nvram);
934
935 writel(2, &ha->reg->mailbox[6]);
936 readl(&ha->reg->mailbox[6]);
937
938 writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
939 readl(&ha->reg->ctrl_status);
940 spin_unlock_irqrestore(&ha->hardware_lock, flags);
941
942 /* Wait for firmware to come UP. */
943 max_wait_time = FIRMWARE_UP_TOV * 4;
944 do {
945 uint32_t ctrl_status;
946
947 spin_lock_irqsave(&ha->hardware_lock, flags);
948 ctrl_status = readw(&ha->reg->ctrl_status);
949 mbox_status = readw(&ha->reg->mailbox[0]);
950 spin_unlock_irqrestore(&ha->hardware_lock, flags);
951
952 if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
953 break;
954 if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
955 break;
956
957 DEBUG2(printk("scsi%ld: %s: Waiting for boot firmware to "
958 "complete... ctrl_sts=0x%x, remaining=%d\n",
959 ha->host_no, __func__, ctrl_status,
960 max_wait_time));
961
962 msleep(250);
963 } while ((max_wait_time--));
964
965 if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
966 DEBUG(printk("scsi%ld: %s: Firmware has started\n",
967 ha->host_no, __func__));
968
969 spin_lock_irqsave(&ha->hardware_lock, flags);
970 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
971 &ha->reg->ctrl_status);
972 readl(&ha->reg->ctrl_status);
973 spin_unlock_irqrestore(&ha->hardware_lock, flags);
974
975 status = QLA_SUCCESS;
976 } else {
977 printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
978 "- mbox status 0x%x\n", ha->host_no, __func__,
979 mbox_status);
980 status = QLA_ERROR;
981 }
982 return status;
983 }
984
985 int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
986 {
987 #define QL4_LOCK_DRVR_WAIT 60
988 #define QL4_LOCK_DRVR_SLEEP 1
989
990 int drvr_wait = QL4_LOCK_DRVR_WAIT;
991 while (drvr_wait) {
992 if (ql4xxx_lock_drvr(a) == 0) {
993 ssleep(QL4_LOCK_DRVR_SLEEP);
994 if (drvr_wait) {
995 DEBUG2(printk("scsi%ld: %s: Waiting for "
996 "Global Init Semaphore(%d)...\n",
997 a->host_no,
998 __func__, drvr_wait));
999 }
1000 drvr_wait -= QL4_LOCK_DRVR_SLEEP;
1001 } else {
1002 DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
1003 "acquired\n", a->host_no, __func__));
1004 return QLA_SUCCESS;
1005 }
1006 }
1007 return QLA_ERROR;
1008 }
1009
1010 /**
1011 * qla4xxx_start_firmware - starts qla4xxx firmware
1012 * @ha: Pointer to host adapter structure.
1013 *
1014 * This routine performs the necessary steps to start the firmware for
1015 * the QLA4010 adapter.
1016 **/
1017 static int qla4xxx_start_firmware(struct scsi_qla_host *ha)
1018 {
1019 unsigned long flags = 0;
1020 uint32_t mbox_status;
1021 int status = QLA_ERROR;
1022 int soft_reset = 1;
1023 int config_chip = 0;
1024
1025 if (is_qla4022(ha) | is_qla4032(ha))
1026 ql4xxx_set_mac_number(ha);
1027
1028 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1029 return QLA_ERROR;
1030
1031 spin_lock_irqsave(&ha->hardware_lock, flags);
1032
1033 DEBUG2(printk("scsi%ld: %s: port_ctrl = 0x%08X\n", ha->host_no,
1034 __func__, readw(isp_port_ctrl(ha))));
1035 DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
1036 __func__, readw(isp_port_status(ha))));
1037
1038 /* Is Hardware already initialized? */
1039 if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
1040 DEBUG(printk("scsi%ld: %s: Hardware has already been "
1041 "initialized\n", ha->host_no, __func__));
1042
1043 /* Receive firmware boot acknowledgement */
1044 mbox_status = readw(&ha->reg->mailbox[0]);
1045
1046 DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
1047 "0x%x\n", ha->host_no, __func__, mbox_status));
1048
1049 /* Is firmware already booted? */
1050 if (mbox_status == 0) {
1051 /* F/W not running, must be config by net driver */
1052 config_chip = 1;
1053 soft_reset = 0;
1054 } else {
1055 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
1056 &ha->reg->ctrl_status);
1057 readl(&ha->reg->ctrl_status);
1058 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1059 if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
1060 DEBUG2(printk("scsi%ld: %s: Get firmware "
1061 "state -- state = 0x%x\n",
1062 ha->host_no,
1063 __func__, ha->firmware_state));
1064 /* F/W is running */
1065 if (ha->firmware_state &
1066 FW_STATE_CONFIG_WAIT) {
1067 DEBUG2(printk("scsi%ld: %s: Firmware "
1068 "in known state -- "
1069 "config and "
1070 "boot, state = 0x%x\n",
1071 ha->host_no, __func__,
1072 ha->firmware_state));
1073 config_chip = 1;
1074 soft_reset = 0;
1075 }
1076 } else {
1077 DEBUG2(printk("scsi%ld: %s: Firmware in "
1078 "unknown state -- resetting,"
1079 " state = "
1080 "0x%x\n", ha->host_no, __func__,
1081 ha->firmware_state));
1082 }
1083 spin_lock_irqsave(&ha->hardware_lock, flags);
1084 }
1085 } else {
1086 DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
1087 "started - resetting\n", ha->host_no, __func__));
1088 }
1089 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1090
1091 DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
1092 ha->host_no, __func__, soft_reset, config_chip));
1093 if (soft_reset) {
1094 DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
1095 __func__));
1096 status = qla4xxx_soft_reset(ha);
1097 if (status == QLA_ERROR) {
1098 DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
1099 ha->host_no, __func__));
1100 ql4xxx_unlock_drvr(ha);
1101 return QLA_ERROR;
1102 }
1103 config_chip = 1;
1104
1105 /* Reset clears the semaphore, so acquire again */
1106 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1107 return QLA_ERROR;
1108 }
1109
1110 if (config_chip) {
1111 if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
1112 status = qla4xxx_start_firmware_from_flash(ha);
1113 }
1114
1115 ql4xxx_unlock_drvr(ha);
1116 if (status == QLA_SUCCESS) {
1117 qla4xxx_get_fw_version(ha);
1118 if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
1119 qla4xxx_get_crash_record(ha);
1120 } else {
1121 DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
1122 ha->host_no, __func__));
1123 }
1124 return status;
1125 }
1126
1127
1128 /**
1129 * qla4xxx_initialize_adapter - initiailizes hba
1130 * @ha: Pointer to host adapter structure.
1131 * @renew_ddb_list: Indicates what to do with the adapter's ddb list
1132 * after adapter recovery has completed.
1133 * 0=preserve ddb list, 1=destroy and rebuild ddb list
1134 *
1135 * This routine parforms all of the steps necessary to initialize the adapter.
1136 *
1137 **/
1138 int qla4xxx_initialize_adapter(struct scsi_qla_host *ha,
1139 uint8_t renew_ddb_list)
1140 {
1141 int status = QLA_ERROR;
1142 int8_t ip_address[IP_ADDR_LEN] = {0} ;
1143
1144 ha->eeprom_cmd_data = 0;
1145
1146 qla4x00_pci_config(ha);
1147
1148 qla4xxx_disable_intrs(ha);
1149
1150 /* Initialize the Host adapter request/response queues and firmware */
1151 if (qla4xxx_start_firmware(ha) == QLA_ERROR)
1152 goto exit_init_hba;
1153
1154 if (qla4xxx_validate_mac_address(ha) == QLA_ERROR)
1155 goto exit_init_hba;
1156
1157 if (qla4xxx_init_local_data(ha) == QLA_ERROR)
1158 goto exit_init_hba;
1159
1160 status = qla4xxx_init_firmware(ha);
1161 if (status == QLA_ERROR)
1162 goto exit_init_hba;
1163
1164 /*
1165 * FW is waiting to get an IP address from DHCP server: Skip building
1166 * the ddb_list and wait for DHCP lease acquired aen to come in
1167 * followed by 0x8014 aen" to trigger the tgt discovery process.
1168 */
1169 if (ha->firmware_state & FW_STATE_DHCP_IN_PROGRESS)
1170 goto exit_init_online;
1171
1172 /* Skip device discovery if ip and subnet is zero */
1173 if (memcmp(ha->ip_address, ip_address, IP_ADDR_LEN) == 0 ||
1174 memcmp(ha->subnet_mask, ip_address, IP_ADDR_LEN) == 0)
1175 goto exit_init_online;
1176
1177 if (renew_ddb_list == PRESERVE_DDB_LIST) {
1178 /*
1179 * We want to preserve lun states (i.e. suspended, etc.)
1180 * for recovery initiated by the driver. So just update
1181 * the device states for the existing ddb_list.
1182 */
1183 qla4xxx_reinitialize_ddb_list(ha);
1184 } else if (renew_ddb_list == REBUILD_DDB_LIST) {
1185 /*
1186 * We want to build the ddb_list from scratch during
1187 * driver initialization and recovery initiated by the
1188 * INT_HBA_RESET IOCTL.
1189 */
1190 status = qla4xxx_initialize_ddb_list(ha);
1191 if (status == QLA_ERROR) {
1192 DEBUG2(printk("%s(%ld) Error occurred during build"
1193 "ddb list\n", __func__, ha->host_no));
1194 goto exit_init_hba;
1195 }
1196
1197 }
1198 if (!ha->tot_ddbs) {
1199 DEBUG2(printk("scsi%ld: Failed to initialize devices or none "
1200 "present in Firmware device database\n",
1201 ha->host_no));
1202 }
1203
1204 exit_init_online:
1205 set_bit(AF_ONLINE, &ha->flags);
1206 exit_init_hba:
1207 return status;
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 **/
1217 static void qla4xxx_add_device_dynamically(struct scsi_qla_host *ha,
1218 uint32_t fw_ddb_index)
1219 {
1220 struct ddb_entry * ddb_entry;
1221 uint32_t new_tgt;
1222
1223 /* First allocate a device structure */
1224 ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index, &new_tgt);
1225 if (ddb_entry == NULL) {
1226 DEBUG2(printk(KERN_WARNING
1227 "scsi%ld: Unable to allocate memory to add "
1228 "fw_ddb_index %d\n", ha->host_no, fw_ddb_index));
1229 return;
1230 }
1231
1232 if (!new_tgt && (ddb_entry->fw_ddb_index != fw_ddb_index)) {
1233 /* Target has been bound to a new fw_ddb_index */
1234 qla4xxx_free_ddb(ha, ddb_entry);
1235 ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
1236 if (ddb_entry == NULL) {
1237 DEBUG2(printk(KERN_WARNING
1238 "scsi%ld: Unable to allocate memory"
1239 " to add fw_ddb_index %d\n",
1240 ha->host_no, fw_ddb_index));
1241 return;
1242 }
1243 }
1244 if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
1245 QLA_ERROR) {
1246 ha->fw_ddb_index_map[fw_ddb_index] =
1247 (struct ddb_entry *)INVALID_ENTRY;
1248 DEBUG2(printk(KERN_WARNING
1249 "scsi%ld: failed to add new device at index "
1250 "[%d]\n Unable to retrieve fw ddb entry\n",
1251 ha->host_no, fw_ddb_index));
1252 qla4xxx_free_ddb(ha, ddb_entry);
1253 return;
1254 }
1255
1256 if (qla4xxx_add_sess(ddb_entry)) {
1257 DEBUG2(printk(KERN_WARNING
1258 "scsi%ld: failed to add new device at index "
1259 "[%d]\n Unable to add connection and session\n",
1260 ha->host_no, fw_ddb_index));
1261 qla4xxx_free_ddb(ha, ddb_entry);
1262 }
1263 }
1264
1265 /**
1266 * qla4xxx_process_ddb_changed - process ddb state change
1267 * @ha - Pointer to host adapter structure.
1268 * @fw_ddb_index - Firmware's device database index
1269 * @state - Device state
1270 *
1271 * This routine processes a Decive Database Changed AEN Event.
1272 **/
1273 int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
1274 uint32_t fw_ddb_index, uint32_t state)
1275 {
1276 struct ddb_entry * ddb_entry;
1277 uint32_t old_fw_ddb_device_state;
1278
1279 /* check for out of range index */
1280 if (fw_ddb_index >= MAX_DDB_ENTRIES)
1281 return QLA_ERROR;
1282
1283 /* Get the corresponging ddb entry */
1284 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
1285 /* Device does not currently exist in our database. */
1286 if (ddb_entry == NULL) {
1287 if (state == DDB_DS_SESSION_ACTIVE)
1288 qla4xxx_add_device_dynamically(ha, fw_ddb_index);
1289 return QLA_SUCCESS;
1290 }
1291
1292 /* Device already exists in our database. */
1293 old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
1294 DEBUG2(printk("scsi%ld: %s DDB - old state= 0x%x, new state=0x%x for "
1295 "index [%d]\n", ha->host_no, __func__,
1296 ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
1297 if (old_fw_ddb_device_state == state &&
1298 state == DDB_DS_SESSION_ACTIVE) {
1299 /* Do nothing, state not changed. */
1300 return QLA_SUCCESS;
1301 }
1302
1303 ddb_entry->fw_ddb_device_state = state;
1304 /* Device is back online. */
1305 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
1306 atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
1307 atomic_set(&ddb_entry->port_down_timer,
1308 ha->port_down_retry_count);
1309 atomic_set(&ddb_entry->relogin_retry_count, 0);
1310 atomic_set(&ddb_entry->relogin_timer, 0);
1311 clear_bit(DF_RELOGIN, &ddb_entry->flags);
1312 clear_bit(DF_NO_RELOGIN, &ddb_entry->flags);
1313 iscsi_unblock_session(ddb_entry->sess);
1314 iscsi_session_event(ddb_entry->sess,
1315 ISCSI_KEVENT_CREATE_SESSION);
1316 /*
1317 * Change the lun state to READY in case the lun TIMEOUT before
1318 * the device came back.
1319 */
1320 } else {
1321 /* Device went away, try to relogin. */
1322 /* Mark device missing */
1323 if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
1324 qla4xxx_mark_device_missing(ha, ddb_entry);
1325 /*
1326 * Relogin if device state changed to a not active state.
1327 * However, do not relogin if this aen is a result of an IOCTL
1328 * logout (DF_NO_RELOGIN) or if this is a discovered device.
1329 */
1330 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_FAILED &&
1331 !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
1332 !test_bit(DF_NO_RELOGIN, &ddb_entry->flags) &&
1333 !test_bit(DF_ISNS_DISCOVERED, &ddb_entry->flags)) {
1334 /*
1335 * This triggers a relogin. After the relogin_timer
1336 * expires, the relogin gets scheduled. We must wait a
1337 * minimum amount of time since receiving an 0x8014 AEN
1338 * with failed device_state or a logout response before
1339 * we can issue another relogin.
1340 */
1341 /* Firmware padds this timeout: (time2wait +1).
1342 * Driver retry to login should be longer than F/W.
1343 * Otherwise F/W will fail
1344 * set_ddb() mbx cmd with 0x4005 since it still
1345 * counting down its time2wait.
1346 */
1347 atomic_set(&ddb_entry->relogin_timer, 0);
1348 atomic_set(&ddb_entry->retry_relogin_timer,
1349 ddb_entry->default_time2wait + 4);
1350 }
1351 }
1352
1353 return QLA_SUCCESS;
1354 }
1355