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Merge branch 'upstream/core' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen
[net-next-2.6.git] / drivers / scsi / qla4xxx / ql4_init.c
CommitLineData
afaf5a2d
DS		 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
26974789 8#include <scsi/iscsi_if.h>
afaf5a2d 9#include "ql4_def.h"
92b72736
DS		 10#include "ql4_glbl.h"
11#include "ql4_dbg.h"
12#include "ql4_inline.h"
afaf5a2d 13
f4f5df23
VC		 14static struct ddb_entry *qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
15 uint32_t fw_ddb_index);
afaf5a2d
DS		 16
17static 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 **/
f4f5df23
VC		 54void qla4xxx_free_ddb(struct scsi_qla_host *ha,
55 struct ddb_entry *ddb_entry)
afaf5a2d
DS		 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 **/
75void 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
f4f5df23
VC		 88/**
89 * qla4xxx_init_response_q_entries() - Initializes response queue entries.
90 * @ha: HA context
91 *
92 * Beginning of request ring has initialization control block already built
93 * by nvram config routine.
94 **/
95static void qla4xxx_init_response_q_entries(struct scsi_qla_host *ha)
96{
97 uint16_t cnt;
98 struct response *pkt;
99
100 pkt = (struct response *)ha->response_ptr;
101 for (cnt = 0; cnt < RESPONSE_QUEUE_DEPTH; cnt++) {
102 pkt->signature = RESPONSE_PROCESSED;
103 pkt++;
104 }
105}
106
afaf5a2d
DS		 107/**
108 * qla4xxx_init_rings - initialize hw queues
109 * @ha: pointer to host adapter structure.
110 *
111 * This routine initializes the internal queues for the specified adapter.
112 * The QLA4010 requires us to restart the queues at index 0.
113 * The QLA4000 doesn't care, so just default to QLA4010's requirement.
114 **/
115int qla4xxx_init_rings(struct scsi_qla_host *ha)
116{
117 unsigned long flags = 0;
118
119 /* Initialize request queue. */
120 spin_lock_irqsave(&ha->hardware_lock, flags);
121 ha->request_out = 0;
122 ha->request_in = 0;
123 ha->request_ptr = &ha->request_ring[ha->request_in];
124 ha->req_q_count = REQUEST_QUEUE_DEPTH;
125
126 /* Initialize response queue. */
127 ha->response_in = 0;
128 ha->response_out = 0;
129 ha->response_ptr = &ha->response_ring[ha->response_out];
130
f4f5df23
VC		 131 if (is_qla8022(ha)) {
132 writel(0,
133 (unsigned long __iomem *)&ha->qla4_8xxx_reg->req_q_out);
134 writel(0,
135 (unsigned long __iomem *)&ha->qla4_8xxx_reg->rsp_q_in);
136 writel(0,
137 (unsigned long __iomem *)&ha->qla4_8xxx_reg->rsp_q_out);
138 } else {
139 /*
140 * Initialize DMA Shadow registers. The firmware is really
141 * supposed to take care of this, but on some uniprocessor
142 * systems, the shadow registers aren't cleared-- causing
143 * the interrupt_handler to think there are responses to be
144 * processed when there aren't.
145 */
146 ha->shadow_regs->req_q_out = __constant_cpu_to_le32(0);
147 ha->shadow_regs->rsp_q_in = __constant_cpu_to_le32(0);
148 wmb();
afaf5a2d 149
f4f5df23
VC		 150 writel(0, &ha->reg->req_q_in);
151 writel(0, &ha->reg->rsp_q_out);
152 readl(&ha->reg->rsp_q_out);
153 }
154
155 qla4xxx_init_response_q_entries(ha);
afaf5a2d
DS		 156
157 spin_unlock_irqrestore(&ha->hardware_lock, flags);
158
159 return QLA_SUCCESS;
160}
161
162/**
f4f5df23 163 * qla4xxx_get_sys_info - validate adapter MAC address(es)
afaf5a2d
DS		 164 * @ha: pointer to host adapter structure.
165 *
166 **/
f4f5df23 167int qla4xxx_get_sys_info(struct scsi_qla_host *ha)
afaf5a2d
DS		 168{
169 struct flash_sys_info *sys_info;
170 dma_addr_t sys_info_dma;
171 int status = QLA_ERROR;
172
173 sys_info = dma_alloc_coherent(&ha->pdev->dev, sizeof(*sys_info),
174 &sys_info_dma, GFP_KERNEL);
175 if (sys_info == NULL) {
176 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
177 ha->host_no, __func__));
178
f4f5df23 179 goto exit_get_sys_info_no_free;
afaf5a2d
DS		 180 }
181 memset(sys_info, 0, sizeof(*sys_info));
182
183 /* Get flash sys info */
184 if (qla4xxx_get_flash(ha, sys_info_dma, FLASH_OFFSET_SYS_INFO,
185 sizeof(*sys_info)) != QLA_SUCCESS) {
186 DEBUG2(printk("scsi%ld: %s: get_flash FLASH_OFFSET_SYS_INFO "
187 "failed\n", ha->host_no, __func__));
188
f4f5df23 189 goto exit_get_sys_info;
afaf5a2d
DS		 190 }
191
192 /* Save M.A.C. address & serial_number */
193 memcpy(ha->my_mac, &sys_info->physAddr[0].address[0],
194 min(sizeof(ha->my_mac),
195 sizeof(sys_info->physAddr[0].address)));
196 memcpy(ha->serial_number, &sys_info->acSerialNumber,
197 min(sizeof(ha->serial_number),
198 sizeof(sys_info->acSerialNumber)));
199
200 status = QLA_SUCCESS;
201
f4f5df23 202exit_get_sys_info:
afaf5a2d
DS		 203 dma_free_coherent(&ha->pdev->dev, sizeof(*sys_info), sys_info,
204 sys_info_dma);
205
f4f5df23 206exit_get_sys_info_no_free:
afaf5a2d
DS		 207 return status;
208}
209
210/**
211 * qla4xxx_init_local_data - initialize adapter specific local data
212 * @ha: pointer to host adapter structure.
213 *
214 **/
215static int qla4xxx_init_local_data(struct scsi_qla_host *ha)
216{
421f91d2 217 /* Initialize aen queue */
afaf5a2d
DS		 218 ha->aen_q_count = MAX_AEN_ENTRIES;
219
220 return qla4xxx_get_firmware_status(ha);
221}
222
2a49a78e
VC		 223static uint8_t
224qla4xxx_wait_for_ip_config(struct scsi_qla_host *ha)
225{
226 uint8_t ipv4_wait = 0;
227 uint8_t ipv6_wait = 0;
228 int8_t ip_address[IPv6_ADDR_LEN] = {0} ;
229
230 /* If both IPv4 & IPv6 are enabled, possibly only one
231 * IP address may be acquired, so check to see if we
232 * need to wait for another */
233 if (is_ipv4_enabled(ha) && is_ipv6_enabled(ha)) {
234 if (((ha->addl_fw_state & FW_ADDSTATE_DHCPv4_ENABLED) != 0) &&
235 ((ha->addl_fw_state &
236 FW_ADDSTATE_DHCPv4_LEASE_ACQUIRED) == 0)) {
237 ipv4_wait = 1;
238 }
239 if (((ha->ipv6_addl_options &
240 IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) != 0) &&
241 ((ha->ipv6_link_local_state == IP_ADDRSTATE_ACQUIRING) ||
242 (ha->ipv6_addr0_state == IP_ADDRSTATE_ACQUIRING) ||
243 (ha->ipv6_addr1_state == IP_ADDRSTATE_ACQUIRING))) {
244
245 ipv6_wait = 1;
246
247 if ((ha->ipv6_link_local_state ==
248 IP_ADDRSTATE_PREFERRED) ||
249 (ha->ipv6_addr0_state == IP_ADDRSTATE_PREFERRED) ||
250 (ha->ipv6_addr1_state == IP_ADDRSTATE_PREFERRED)) {
251 DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
252 "Preferred IP configured."
253 " Don't wait!\n", ha->host_no,
254 __func__));
255 ipv6_wait = 0;
256 }
257 if (memcmp(&ha->ipv6_default_router_addr, ip_address,
258 IPv6_ADDR_LEN) == 0) {
259 DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
260 "No Router configured. "
261 "Don't wait!\n", ha->host_no,
262 __func__));
263 ipv6_wait = 0;
264 }
265 if ((ha->ipv6_default_router_state ==
266 IPV6_RTRSTATE_MANUAL) &&
267 (ha->ipv6_link_local_state ==
268 IP_ADDRSTATE_TENTATIVE) &&
269 (memcmp(&ha->ipv6_link_local_addr,
270 &ha->ipv6_default_router_addr, 4) == 0)) {
271 DEBUG2(printk("scsi%ld: %s: LinkLocal Router & "
272 "IP configured. Don't wait!\n",
273 ha->host_no, __func__));
274 ipv6_wait = 0;
275 }
276 }
277 if (ipv4_wait || ipv6_wait) {
278 DEBUG2(printk("scsi%ld: %s: Wait for additional "
279 "IP(s) \"", ha->host_no, __func__));
280 if (ipv4_wait)
281 DEBUG2(printk("IPv4 "));
282 if (ha->ipv6_link_local_state == IP_ADDRSTATE_ACQUIRING)
283 DEBUG2(printk("IPv6LinkLocal "));
284 if (ha->ipv6_addr0_state == IP_ADDRSTATE_ACQUIRING)
285 DEBUG2(printk("IPv6Addr0 "));
286 if (ha->ipv6_addr1_state == IP_ADDRSTATE_ACQUIRING)
287 DEBUG2(printk("IPv6Addr1 "));
288 DEBUG2(printk("\"\n"));
289 }
290 }
291
292 return ipv4_wait|ipv6_wait;
293}
294
afaf5a2d
DS		 295static int qla4xxx_fw_ready(struct scsi_qla_host *ha)
296{
297 uint32_t timeout_count;
298 int ready = 0;
299
c2660df3 300 DEBUG2(ql4_printk(KERN_INFO, ha, "Waiting for Firmware Ready..\n"));
afaf5a2d
DS		 301 for (timeout_count = ADAPTER_INIT_TOV; timeout_count > 0;
302 timeout_count--) {
303 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
304 qla4xxx_get_dhcp_ip_address(ha);
305
306 /* Get firmware state. */
307 if (qla4xxx_get_firmware_state(ha) != QLA_SUCCESS) {
308 DEBUG2(printk("scsi%ld: %s: unable to get firmware "
309 "state\n", ha->host_no, __func__));
310 break;
afaf5a2d
DS		 311 }
312
313 if (ha->firmware_state & FW_STATE_ERROR) {
314 DEBUG2(printk("scsi%ld: %s: an unrecoverable error has"
315 " occurred\n", ha->host_no, __func__));
316 break;
317
318 }
319 if (ha->firmware_state & FW_STATE_CONFIG_WAIT) {
320 /*
321 * The firmware has not yet been issued an Initialize
322 * Firmware command, so issue it now.
323 */
324 if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR)
325 break;
326
327 /* Go back and test for ready state - no wait. */
328 continue;
329 }
330
2a49a78e
VC		 331 if (ha->firmware_state & FW_STATE_WAIT_AUTOCONNECT) {
332 DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
333 "AUTOCONNECT in progress\n",
334 ha->host_no, __func__));
335 }
336
337 if (ha->firmware_state & FW_STATE_CONFIGURING_IP) {
338 DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
339 " CONFIGURING IP\n",
340 ha->host_no, __func__));
341 /*
342 * Check for link state after 15 secs and if link is
343 * still DOWN then, cable is unplugged. Ignore "DHCP
344 * in Progress/CONFIGURING IP" bit to check if firmware
345 * is in ready state or not after 15 secs.
346 * This is applicable for both 2.x & 3.x firmware
347 */
348 if (timeout_count <= (ADAPTER_INIT_TOV - 15)) {
349 if (ha->addl_fw_state & FW_ADDSTATE_LINK_UP) {
350 DEBUG2(printk(KERN_INFO "scsi%ld: %s:"
351 " LINK UP (Cable plugged)\n",
352 ha->host_no, __func__));
353 } else if (ha->firmware_state &
354 (FW_STATE_CONFIGURING_IP |
355 FW_STATE_READY)) {
356 DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
357 "LINK DOWN (Cable unplugged)\n",
358 ha->host_no, __func__));
359 ha->firmware_state = FW_STATE_READY;
360 }
361 }
362 }
363
afaf5a2d 364 if (ha->firmware_state == FW_STATE_READY) {
2a49a78e
VC		 365 /* If DHCP IP Addr is available, retrieve it now. */
366 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR,
367 &ha->dpc_flags))
368 qla4xxx_get_dhcp_ip_address(ha);
369
370 if (!qla4xxx_wait_for_ip_config(ha) ||
371 timeout_count == 1) {
c2660df3
VC		 372 DEBUG2(ql4_printk(KERN_INFO, ha,
373 "Firmware Ready..\n"));
2a49a78e
VC		 374 /* The firmware is ready to process SCSI
375 commands. */
c2660df3 376 DEBUG2(ql4_printk(KERN_INFO, ha,
2a49a78e
VC		 377 "scsi%ld: %s: MEDIA TYPE"
378 " - %s\n", ha->host_no,
379 __func__, (ha->addl_fw_state &
380 FW_ADDSTATE_OPTICAL_MEDIA)
381 != 0 ? "OPTICAL" : "COPPER"));
c2660df3 382 DEBUG2(ql4_printk(KERN_INFO, ha,
2a49a78e
VC		 383 "scsi%ld: %s: DHCPv4 STATE"
384 " Enabled %s\n", ha->host_no,
385 __func__, (ha->addl_fw_state &
386 FW_ADDSTATE_DHCPv4_ENABLED) != 0 ?
387 "YES" : "NO"));
c2660df3 388 DEBUG2(ql4_printk(KERN_INFO, ha,
2a49a78e
VC		 389 "scsi%ld: %s: LINK %s\n",
390 ha->host_no, __func__,
391 (ha->addl_fw_state &
392 FW_ADDSTATE_LINK_UP) != 0 ?
393 "UP" : "DOWN"));
c2660df3 394 DEBUG2(ql4_printk(KERN_INFO, ha,
2a49a78e
VC		 395 "scsi%ld: %s: iSNS Service "
396 "Started %s\n",
397 ha->host_no, __func__,
398 (ha->addl_fw_state &
399 FW_ADDSTATE_ISNS_SVC_ENABLED) != 0 ?
400 "YES" : "NO"));
401
402 ready = 1;
403 break;
404 }
afaf5a2d
DS		 405 }
406 DEBUG2(printk("scsi%ld: %s: waiting on fw, state=%x:%x - "
407 "seconds expired= %d\n", ha->host_no, __func__,
408 ha->firmware_state, ha->addl_fw_state,
409 timeout_count));
d915058f
DS		 410 if (is_qla4032(ha) &&
411 !(ha->addl_fw_state & FW_ADDSTATE_LINK_UP) &&
412 (timeout_count < ADAPTER_INIT_TOV - 5)) {
413 break;
414 }
415
afaf5a2d
DS		 416 msleep(1000);
417 } /* end of for */
418
2a49a78e 419 if (timeout_count <= 0)
afaf5a2d
DS		 420 DEBUG2(printk("scsi%ld: %s: FW Initialization timed out!\n",
421 ha->host_no, __func__));
422
2a49a78e
VC		 423 if (ha->firmware_state & FW_STATE_CONFIGURING_IP) {
424 DEBUG2(printk("scsi%ld: %s: FW initialized, but is reporting "
425 "it's waiting to configure an IP address\n",
426 ha->host_no, __func__));
afaf5a2d 427 ready = 1;
2a49a78e
VC		 428 } else if (ha->firmware_state & FW_STATE_WAIT_AUTOCONNECT) {
429 DEBUG2(printk("scsi%ld: %s: FW initialized, but "
430 "auto-discovery still in process\n",
431 ha->host_no, __func__));
b966346c 432 ready = 1;
afaf5a2d
DS		 433 }
434
435 return ready;
436}
437
438/**
439 * qla4xxx_init_firmware - initializes the firmware.
440 * @ha: pointer to host adapter structure.
441 *
442 **/
443static int qla4xxx_init_firmware(struct scsi_qla_host *ha)
444{
445 int status = QLA_ERROR;
446
2232be0d
LC		 447 if (is_aer_supported(ha) &&
448 test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
449 return status;
450
9d4946f8
LC		 451 /* For 82xx, stop firmware before initializing because if BIOS
452 * has previously initialized firmware, then driver's initialize
453 * firmware will fail. */
454 if (is_qla8022(ha))
455 qla4_8xxx_stop_firmware(ha);
456
c2660df3 457 ql4_printk(KERN_INFO, ha, "Initializing firmware..\n");
afaf5a2d
DS		 458 if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR) {
459 DEBUG2(printk("scsi%ld: %s: Failed to initialize firmware "
460 "control block\n", ha->host_no, __func__));
461 return status;
462 }
463 if (!qla4xxx_fw_ready(ha))
464 return status;
465
afaf5a2d
DS		 466 return qla4xxx_get_firmware_status(ha);
467}
468
469static struct ddb_entry* qla4xxx_get_ddb_entry(struct scsi_qla_host *ha,
92b72736
DS		 470 uint32_t fw_ddb_index,
471 uint32_t *new_tgt)
afaf5a2d
DS		 472{
473 struct dev_db_entry *fw_ddb_entry = NULL;
474 dma_addr_t fw_ddb_entry_dma;
475 struct ddb_entry *ddb_entry = NULL;
476 int found = 0;
477 uint32_t device_state;
478
92b72736 479 *new_tgt = 0;
afaf5a2d
DS		 480 /* Make sure the dma buffer is valid */
481 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
482 sizeof(*fw_ddb_entry),
483 &fw_ddb_entry_dma, GFP_KERNEL);
484 if (fw_ddb_entry == NULL) {
485 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
486 ha->host_no, __func__));
beabe7c1 487 goto exit_get_ddb_entry_no_free;
afaf5a2d
DS		 488 }
489
490 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
491 fw_ddb_entry_dma, NULL, NULL,
492 &device_state, NULL, NULL, NULL) ==
beabe7c1 493 QLA_ERROR) {
afaf5a2d
DS		 494 DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
495 "fw_ddb_index %d\n", ha->host_no, __func__,
496 fw_ddb_index));
beabe7c1 497 goto exit_get_ddb_entry;
afaf5a2d
DS		 498 }
499
500 /* Allocate DDB if not already allocated. */
501 DEBUG2(printk("scsi%ld: %s: Looking for ddb[%d]\n", ha->host_no,
502 __func__, fw_ddb_index));
503 list_for_each_entry(ddb_entry, &ha->ddb_list, list) {
41bbdbeb
MC		 504 if ((memcmp(ddb_entry->iscsi_name, fw_ddb_entry->iscsi_name,
505 ISCSI_NAME_SIZE) == 0) &&
506 (ddb_entry->tpgt ==
507 le32_to_cpu(fw_ddb_entry->tgt_portal_grp)) &&
508 (memcmp(ddb_entry->isid, fw_ddb_entry->isid,
509 sizeof(ddb_entry->isid)) == 0)) {
afaf5a2d
DS		 510 found++;
511 break;
512 }
513 }
514
beabe7c1 515 /* if not found allocate new ddb */
afaf5a2d
DS		 516 if (!found) {
517 DEBUG2(printk("scsi%ld: %s: ddb[%d] not found - allocating "
518 "new ddb\n", ha->host_no, __func__,
519 fw_ddb_index));
92b72736 520 *new_tgt = 1;
afaf5a2d
DS		 521 ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
522 }
523
beabe7c1 524exit_get_ddb_entry:
afaf5a2d
DS		 525 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
526 fw_ddb_entry_dma);
527
beabe7c1 528exit_get_ddb_entry_no_free:
afaf5a2d
DS		 529 return ddb_entry;
530}
531
532/**
533 * qla4xxx_update_ddb_entry - update driver's internal ddb
534 * @ha: pointer to host adapter structure.
535 * @ddb_entry: pointer to device database structure to be filled
536 * @fw_ddb_index: index of the ddb entry in fw ddb table
537 *
538 * This routine updates the driver's internal device database entry
539 * with information retrieved from the firmware's device database
540 * entry for the specified device. The ddb_entry->fw_ddb_index field
541 * must be initialized prior to calling this routine
542 *
543 **/
47975477
AB		 544static int qla4xxx_update_ddb_entry(struct scsi_qla_host *ha,
545 struct ddb_entry *ddb_entry,
546 uint32_t fw_ddb_index)
afaf5a2d
DS		 547{
548 struct dev_db_entry *fw_ddb_entry = NULL;
549 dma_addr_t fw_ddb_entry_dma;
550 int status = QLA_ERROR;
821d6e54 551 uint32_t conn_err;
afaf5a2d
DS		 552
553 if (ddb_entry == NULL) {
554 DEBUG2(printk("scsi%ld: %s: ddb_entry is NULL\n", ha->host_no,
555 __func__));
beabe7c1
PM		 556
557 goto exit_update_ddb_no_free;
afaf5a2d
DS		 558 }
559
560 /* Make sure the dma buffer is valid */
561 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
562 sizeof(*fw_ddb_entry),
563 &fw_ddb_entry_dma, GFP_KERNEL);
564 if (fw_ddb_entry == NULL) {
565 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
566 ha->host_no, __func__));
567
beabe7c1 568 goto exit_update_ddb_no_free;
afaf5a2d
DS		 569 }
570
571 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
572 fw_ddb_entry_dma, NULL, NULL,
821d6e54 573 &ddb_entry->fw_ddb_device_state, &conn_err,
afaf5a2d
DS		 574 &ddb_entry->tcp_source_port_num,
575 &ddb_entry->connection_id) ==
beabe7c1 576 QLA_ERROR) {
afaf5a2d
DS		 577 DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
578 "fw_ddb_index %d\n", ha->host_no, __func__,
579 fw_ddb_index));
580
581 goto exit_update_ddb;
582 }
583
584 status = QLA_SUCCESS;
2a49a78e 585 ddb_entry->options = le16_to_cpu(fw_ddb_entry->options);
92b72736 586 ddb_entry->target_session_id = le16_to_cpu(fw_ddb_entry->tsid);
afaf5a2d 587 ddb_entry->task_mgmt_timeout =
92b72736 588 le16_to_cpu(fw_ddb_entry->def_timeout);
afaf5a2d 589 ddb_entry->CmdSn = 0;
92b72736 590 ddb_entry->exe_throttle = le16_to_cpu(fw_ddb_entry->exec_throttle);
afaf5a2d 591 ddb_entry->default_relogin_timeout =
92b72736
DS		 592 le16_to_cpu(fw_ddb_entry->def_timeout);
593 ddb_entry->default_time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
afaf5a2d
DS		 594
595 /* Update index in case it changed */
596 ddb_entry->fw_ddb_index = fw_ddb_index;
597 ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
598
92b72736
DS		 599 ddb_entry->port = le16_to_cpu(fw_ddb_entry->port);
600 ddb_entry->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
41bbdbeb
MC		 601 memcpy(ddb_entry->isid, fw_ddb_entry->isid, sizeof(ddb_entry->isid));
602
92b72736 603 memcpy(&ddb_entry->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
afaf5a2d 604 min(sizeof(ddb_entry->iscsi_name),
92b72736 605 sizeof(fw_ddb_entry->iscsi_name)));
3b2bef1f
VC		 606 memcpy(&ddb_entry->iscsi_alias[0], &fw_ddb_entry->iscsi_alias[0],
607 min(sizeof(ddb_entry->iscsi_alias),
608 sizeof(fw_ddb_entry->iscsi_alias)));
92b72736
DS		 609 memcpy(&ddb_entry->ip_addr[0], &fw_ddb_entry->ip_addr[0],
610 min(sizeof(ddb_entry->ip_addr), sizeof(fw_ddb_entry->ip_addr)));
afaf5a2d 611
2a49a78e
VC		 612 ddb_entry->iscsi_max_burst_len = fw_ddb_entry->iscsi_max_burst_len;
613 ddb_entry->iscsi_max_outsnd_r2t = fw_ddb_entry->iscsi_max_outsnd_r2t;
614 ddb_entry->iscsi_first_burst_len = fw_ddb_entry->iscsi_first_burst_len;
615 ddb_entry->iscsi_max_rcv_data_seg_len =
616 fw_ddb_entry->iscsi_max_rcv_data_seg_len;
617 ddb_entry->iscsi_max_snd_data_seg_len =
618 fw_ddb_entry->iscsi_max_snd_data_seg_len;
619
620 if (ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
621 memcpy(&ddb_entry->remote_ipv6_addr,
622 fw_ddb_entry->ip_addr,
623 min(sizeof(ddb_entry->remote_ipv6_addr),
624 sizeof(fw_ddb_entry->ip_addr)));
625 memcpy(&ddb_entry->link_local_ipv6_addr,
626 fw_ddb_entry->link_local_ipv6_addr,
627 min(sizeof(ddb_entry->link_local_ipv6_addr),
628 sizeof(fw_ddb_entry->link_local_ipv6_addr)));
afaf5a2d 629
f4f5df23
VC		 630 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: DDB[%d] State %04x"
631 " ConnErr %08x IP %pI6 "
821d6e54
VC		 632 ":%04d \"%s\"\n",
633 __func__, fw_ddb_index,
821d6e54
VC		 634 ddb_entry->fw_ddb_device_state,
635 conn_err, fw_ddb_entry->ip_addr,
636 le16_to_cpu(fw_ddb_entry->port),
637 fw_ddb_entry->iscsi_name));
638 } else
f4f5df23
VC		 639 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: DDB[%d] State %04x"
640 " ConnErr %08x IP %pI4 "
821d6e54
VC		 641 ":%04d \"%s\"\n",
642 __func__, fw_ddb_index,
821d6e54
VC		 643 ddb_entry->fw_ddb_device_state,
644 conn_err, fw_ddb_entry->ip_addr,
645 le16_to_cpu(fw_ddb_entry->port),
646 fw_ddb_entry->iscsi_name));
2a49a78e 647exit_update_ddb:
afaf5a2d
DS		 648 if (fw_ddb_entry)
649 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
650 fw_ddb_entry, fw_ddb_entry_dma);
651
beabe7c1 652exit_update_ddb_no_free:
afaf5a2d
DS		 653 return status;
654}
655
656/**
657 * qla4xxx_alloc_ddb - allocate device database entry
658 * @ha: Pointer to host adapter structure.
659 * @fw_ddb_index: Firmware's device database index
660 *
661 * This routine allocates a ddb_entry, ititializes some values, and
662 * inserts it into the ddb list.
663 **/
47975477
AB		 664static struct ddb_entry * qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
665 uint32_t fw_ddb_index)
afaf5a2d
DS		 666{
667 struct ddb_entry *ddb_entry;
668
669 DEBUG2(printk("scsi%ld: %s: fw_ddb_index [%d]\n", ha->host_no,
670 __func__, fw_ddb_index));
671
672 ddb_entry = qla4xxx_alloc_sess(ha);
673 if (ddb_entry == NULL) {
674 DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
675 "to add fw_ddb_index [%d]\n",
676 ha->host_no, __func__, fw_ddb_index));
677 return ddb_entry;
678 }
679
680 ddb_entry->fw_ddb_index = fw_ddb_index;
afaf5a2d
DS		 681 atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
682 atomic_set(&ddb_entry->relogin_timer, 0);
683 atomic_set(&ddb_entry->relogin_retry_count, 0);
684 atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
685 list_add_tail(&ddb_entry->list, &ha->ddb_list);
686 ha->fw_ddb_index_map[fw_ddb_index] = ddb_entry;
687 ha->tot_ddbs++;
688
689 return ddb_entry;
690}
691
821d6e54
VC		 692/**
693 * qla4_is_relogin_allowed - Are we allowed to login?
694 * @ha: Pointer to host adapter structure.
695 * @conn_err: Last connection error associated with the ddb
696 *
697 * This routine tests the given connection error to determine if
698 * we are allowed to login.
699 **/
700int qla4_is_relogin_allowed(struct scsi_qla_host *ha, uint32_t conn_err)
701{
702 uint32_t err_code, login_rsp_sts_class;
703 int relogin = 1;
704
705 err_code = ((conn_err & 0x00ff0000) >> 16);
706 login_rsp_sts_class = ((conn_err & 0x0000ff00) >> 8);
707 if (err_code == 0x1c || err_code == 0x06) {
c2660df3
VC		 708 DEBUG2(ql4_printk(KERN_INFO, ha,
709 ": conn_err=0x%08x, send target completed"
710 " or access denied failure\n", conn_err));
821d6e54
VC		 711 relogin = 0;
712 }
713 if ((err_code == 0x08) && (login_rsp_sts_class == 0x02)) {
714 /* Login Response PDU returned an error.
715 Login Response Status in Error Code Detail
716 indicates login should not be retried.*/
c2660df3
VC		 717 DEBUG2(ql4_printk(KERN_INFO, ha,
718 ": conn_err=0x%08x, do not retry relogin\n",
719 conn_err));
821d6e54
VC		 720 relogin = 0;
721 }
722
723 return relogin;
724}
725
afaf5a2d
DS		 726/**
727 * qla4xxx_configure_ddbs - builds driver ddb list
728 * @ha: Pointer to host adapter structure.
729 *
730 * This routine searches for all valid firmware ddb entries and builds
731 * an internal ddb list. Ddbs that are considered valid are those with
732 * a device state of SESSION_ACTIVE.
733 **/
734static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
735{
beabe7c1 736 int status = QLA_ERROR;
afaf5a2d
DS		 737 uint32_t fw_ddb_index = 0;
738 uint32_t next_fw_ddb_index = 0;
739 uint32_t ddb_state;
821d6e54 740 uint32_t conn_err;
afaf5a2d 741 struct ddb_entry *ddb_entry;
821d6e54
VC		 742 struct dev_db_entry *fw_ddb_entry = NULL;
743 dma_addr_t fw_ddb_entry_dma;
744 uint32_t ipv6_device;
92b72736 745 uint32_t new_tgt;
afaf5a2d 746
821d6e54
VC		 747 fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
748 &fw_ddb_entry_dma, GFP_KERNEL);
749 if (fw_ddb_entry == NULL) {
c2660df3 750 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: DMA alloc failed\n",
821d6e54 751 __func__));
beabe7c1
PM		 752
753 goto exit_build_ddb_list_no_free;
821d6e54
VC		 754 }
755
c2660df3 756 ql4_printk(KERN_INFO, ha, "Initializing DDBs ...\n");
afaf5a2d
DS		 757 for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES;
758 fw_ddb_index = next_fw_ddb_index) {
759 /* First, let's see if a device exists here */
821d6e54
VC		 760 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
761 0, NULL, &next_fw_ddb_index,
762 &ddb_state, &conn_err,
763 NULL, NULL) ==
764 QLA_ERROR) {
afaf5a2d
DS		 765 DEBUG2(printk("scsi%ld: %s: get_ddb_entry, "
766 "fw_ddb_index %d failed", ha->host_no,
767 __func__, fw_ddb_index));
beabe7c1 768 goto exit_build_ddb_list;
afaf5a2d
DS		 769 }
770
771 DEBUG2(printk("scsi%ld: %s: Getting DDB[%d] ddbstate=0x%x, "
772 "next_fw_ddb_index=%d.\n", ha->host_no, __func__,
773 fw_ddb_index, ddb_state, next_fw_ddb_index));
774
775 /* Issue relogin, if necessary. */
776 if (ddb_state == DDB_DS_SESSION_FAILED ||
777 ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) {
778 /* Try and login to device */
779 DEBUG2(printk("scsi%ld: %s: Login to DDB[%d]\n",
780 ha->host_no, __func__, fw_ddb_index));
821d6e54
VC		 781 ipv6_device = le16_to_cpu(fw_ddb_entry->options) &
782 DDB_OPT_IPV6_DEVICE;
783 if (qla4_is_relogin_allowed(ha, conn_err) &&
784 ((!ipv6_device &&
785 *((uint32_t *)fw_ddb_entry->ip_addr))
786 || ipv6_device)) {
afaf5a2d 787 qla4xxx_set_ddb_entry(ha, fw_ddb_index, 0);
92b72736 788 if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index,
821d6e54
VC		 789 NULL, 0, NULL,
790 &next_fw_ddb_index,
791 &ddb_state, &conn_err,
792 NULL, NULL)
793 == QLA_ERROR) {
92b72736
DS		 794 DEBUG2(printk("scsi%ld: %s:"
795 "get_ddb_entry %d failed\n",
796 ha->host_no,
797 __func__, fw_ddb_index));
beabe7c1 798 goto exit_build_ddb_list;
92b72736
DS		 799 }
800 }
afaf5a2d
DS		 801 }
802
803 if (ddb_state != DDB_DS_SESSION_ACTIVE)
804 goto next_one;
805 /*
806 * if fw_ddb with session active state found,
807 * add to ddb_list
808 */
809 DEBUG2(printk("scsi%ld: %s: DDB[%d] added to list\n",
810 ha->host_no, __func__, fw_ddb_index));
811
812 /* Add DDB to internal our ddb list. */
92b72736 813 ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index, &new_tgt);
afaf5a2d
DS		 814 if (ddb_entry == NULL) {
815 DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
816 "for device at fw_ddb_index %d\n",
817 ha->host_no, __func__, fw_ddb_index));
beabe7c1 818 goto exit_build_ddb_list;
afaf5a2d
DS		 819 }
820 /* Fill in the device structure */
821 if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
822 QLA_ERROR) {
823 ha->fw_ddb_index_map[fw_ddb_index] =
824 (struct ddb_entry *)INVALID_ENTRY;
825
afaf5a2d
DS		 826 DEBUG2(printk("scsi%ld: %s: update_ddb_entry failed "
827 "for fw_ddb_index %d.\n",
828 ha->host_no, __func__, fw_ddb_index));
beabe7c1 829 goto exit_build_ddb_list;
afaf5a2d
DS		 830 }
831
832next_one:
833 /* We know we've reached the last device when
834 * next_fw_ddb_index is 0 */
835 if (next_fw_ddb_index == 0)
836 break;
837 }
838
beabe7c1 839 status = QLA_SUCCESS;
c2660df3 840 ql4_printk(KERN_INFO, ha, "DDB list done..\n");
afaf5a2d 841
beabe7c1
PM		 842exit_build_ddb_list:
843 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
844 fw_ddb_entry_dma);
845
846exit_build_ddb_list_no_free:
afaf5a2d
DS		 847 return status;
848}
849
850struct qla4_relog_scan {
851 int halt_wait;
852 uint32_t conn_err;
afaf5a2d
DS		 853 uint32_t fw_ddb_index;
854 uint32_t next_fw_ddb_index;
855 uint32_t fw_ddb_device_state;
856};
857
858static int qla4_test_rdy(struct scsi_qla_host *ha, struct qla4_relog_scan *rs)
859{
860 struct ddb_entry *ddb_entry;
861
821d6e54 862 if (qla4_is_relogin_allowed(ha, rs->conn_err)) {
afaf5a2d
DS		 863 /* We either have a device that is in
864 * the process of relogging in or a
865 * device that is waiting to be
866 * relogged in */
867 rs->halt_wait = 0;
868
869 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
870 rs->fw_ddb_index);
871 if (ddb_entry == NULL)
872 return QLA_ERROR;
873
874 if (ddb_entry->dev_scan_wait_to_start_relogin != 0
875 && time_after_eq(jiffies,
876 ddb_entry->
877 dev_scan_wait_to_start_relogin))
878 {
879 ddb_entry->dev_scan_wait_to_start_relogin = 0;
880 qla4xxx_set_ddb_entry(ha, rs->fw_ddb_index, 0);
881 }
882 }
883 return QLA_SUCCESS;
884}
885
886static int qla4_scan_for_relogin(struct scsi_qla_host *ha,
887 struct qla4_relog_scan *rs)
888{
889 int error;
890
891 /* scan for relogins
892 * ----------------- */
893 for (rs->fw_ddb_index = 0; rs->fw_ddb_index < MAX_DDB_ENTRIES;
894 rs->fw_ddb_index = rs->next_fw_ddb_index) {
895 if (qla4xxx_get_fwddb_entry(ha, rs->fw_ddb_index, NULL, 0,
896 NULL, &rs->next_fw_ddb_index,
897 &rs->fw_ddb_device_state,
898 &rs->conn_err, NULL, NULL)
899 == QLA_ERROR)
900 return QLA_ERROR;
901
902 if (rs->fw_ddb_device_state == DDB_DS_LOGIN_IN_PROCESS)
903 rs->halt_wait = 0;
904
905 if (rs->fw_ddb_device_state == DDB_DS_SESSION_FAILED ||
906 rs->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE) {
907 error = qla4_test_rdy(ha, rs);
908 if (error)
909 return error;
910 }
911
912 /* We know we've reached the last device when
913 * next_fw_ddb_index is 0 */
914 if (rs->next_fw_ddb_index == 0)
915 break;
916 }
917 return QLA_SUCCESS;
918}
919
920/**
921 * qla4xxx_devices_ready - wait for target devices to be logged in
922 * @ha: pointer to adapter structure
923 *
924 * This routine waits up to ql4xdiscoverywait seconds
925 * F/W database during driver load time.
926 **/
927static int qla4xxx_devices_ready(struct scsi_qla_host *ha)
928{
929 int error;
930 unsigned long discovery_wtime;
931 struct qla4_relog_scan rs;
932
933 discovery_wtime = jiffies + (ql4xdiscoverywait * HZ);
934
935 DEBUG(printk("Waiting (%d) for devices ...\n", ql4xdiscoverywait));
936 do {
937 /* poll for AEN. */
938 qla4xxx_get_firmware_state(ha);
939 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags)) {
940 /* Set time-between-relogin timer */
941 qla4xxx_process_aen(ha, RELOGIN_DDB_CHANGED_AENS);
942 }
943
944 /* if no relogins active or needed, halt discvery wait */
945 rs.halt_wait = 1;
946
947 error = qla4_scan_for_relogin(ha, &rs);
948
949 if (rs.halt_wait) {
950 DEBUG2(printk("scsi%ld: %s: Delay halted. Devices "
951 "Ready.\n", ha->host_no, __func__));
952 return QLA_SUCCESS;
953 }
954
955 msleep(2000);
956 } while (!time_after_eq(jiffies, discovery_wtime));
957
958 DEBUG3(qla4xxx_get_conn_event_log(ha));
959
960 return QLA_SUCCESS;
961}
962
963static void qla4xxx_flush_AENS(struct scsi_qla_host *ha)
964{
965 unsigned long wtime;
966
967 /* Flush the 0x8014 AEN from the firmware as a result of
968 * Auto connect. We are basically doing get_firmware_ddb()
969 * to determine whether we need to log back in or not.
970 * Trying to do a set ddb before we have processed 0x8014
971 * will result in another set_ddb() for the same ddb. In other
972 * words there will be stale entries in the aen_q.
973 */
974 wtime = jiffies + (2 * HZ);
975 do {
976 if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS)
977 if (ha->firmware_state & (BIT_2 | BIT_0))
978 return;
979
980 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
981 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
982
983 msleep(1000);
984 } while (!time_after_eq(jiffies, wtime));
985
986}
987
988static int qla4xxx_initialize_ddb_list(struct scsi_qla_host *ha)
989{
990 uint16_t fw_ddb_index;
991 int status = QLA_SUCCESS;
992
993 /* free the ddb list if is not empty */
994 if (!list_empty(&ha->ddb_list))
995 qla4xxx_free_ddb_list(ha);
996
997 for (fw_ddb_index = 0; fw_ddb_index < MAX_DDB_ENTRIES; fw_ddb_index++)
998 ha->fw_ddb_index_map[fw_ddb_index] =
999 (struct ddb_entry *)INVALID_ENTRY;
1000
1001 ha->tot_ddbs = 0;
1002
1003 qla4xxx_flush_AENS(ha);
1004
bb6f7d5b
KH		 1005 /* Wait for an AEN */
1006 qla4xxx_devices_ready(ha);
1007
afaf5a2d
DS		 1008 /*
1009 * First perform device discovery for active
1010 * fw ddb indexes and build
1011 * ddb list.
1012 */
1013 if ((status = qla4xxx_build_ddb_list(ha)) == QLA_ERROR)
1014 return status;
1015
afaf5a2d
DS		 1016 /*
1017 * Targets can come online after the inital discovery, so processing
1018 * the aens here will catch them.
1019 */
1020 if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
1021 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
1022
1023 return status;
1024}
1025
1026/**
f4f5df23 1027 * qla4xxx_reinitialize_ddb_list - update the driver ddb list
afaf5a2d
DS		 1028 * @ha: pointer to host adapter structure.
1029 *
1030 * This routine obtains device information from the F/W database after
1031 * firmware or adapter resets. The device table is preserved.
1032 **/
1033int qla4xxx_reinitialize_ddb_list(struct scsi_qla_host *ha)
1034{
1035 int status = QLA_SUCCESS;
1036 struct ddb_entry *ddb_entry, *detemp;
1037
1038 /* Update the device information for all devices. */
1039 list_for_each_entry_safe(ddb_entry, detemp, &ha->ddb_list, list) {
1040 qla4xxx_update_ddb_entry(ha, ddb_entry,
1041 ddb_entry->fw_ddb_index);
1042 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
1043 atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
1044 DEBUG2(printk ("scsi%ld: %s: ddb index [%d] marked "
1045 "ONLINE\n", ha->host_no, __func__,
1046 ddb_entry->fw_ddb_index));
36386325 1047 iscsi_unblock_session(ddb_entry->sess);
afaf5a2d
DS		 1048 } else if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE)
1049 qla4xxx_mark_device_missing(ha, ddb_entry);
1050 }
1051 return status;
1052}
1053
1054/**
1055 * qla4xxx_relogin_device - re-establish session
1056 * @ha: Pointer to host adapter structure.
1057 * @ddb_entry: Pointer to device database entry
1058 *
1059 * This routine does a session relogin with the specified device.
1060 * The ddb entry must be assigned prior to making this call.
1061 **/
1062int qla4xxx_relogin_device(struct scsi_qla_host *ha,
1063 struct ddb_entry * ddb_entry)
1064{
1065 uint16_t relogin_timer;
1066
1067 relogin_timer = max(ddb_entry->default_relogin_timeout,
1068 (uint16_t)RELOGIN_TOV);
1069 atomic_set(&ddb_entry->relogin_timer, relogin_timer);
1070
f4f5df23 1071 DEBUG2(printk("scsi%ld: Relogin ddb [%d]. TOV=%d\n", ha->host_no,
afaf5a2d
DS		 1072 ddb_entry->fw_ddb_index, relogin_timer));
1073
1074 qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index, 0);
1075
1076 return QLA_SUCCESS;
1077}
1078
afaf5a2d
DS		 1079static int qla4xxx_config_nvram(struct scsi_qla_host *ha)
1080{
1081 unsigned long flags;
1082 union external_hw_config_reg extHwConfig;
1083
1084 DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
1085 __func__));
1086 if (ql4xxx_lock_flash(ha) != QLA_SUCCESS)
b3925514 1087 return QLA_ERROR;
afaf5a2d
DS		 1088 if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
1089 ql4xxx_unlock_flash(ha);
b3925514 1090 return QLA_ERROR;
afaf5a2d
DS		 1091 }
1092
1093 /* Get EEPRom Parameters from NVRAM and validate */
c2660df3 1094 ql4_printk(KERN_INFO, ha, "Configuring NVRAM ...\n");
afaf5a2d
DS		 1095 if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
1096 spin_lock_irqsave(&ha->hardware_lock, flags);
1097 extHwConfig.Asuint32_t =
1098 rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
1099 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1100 } else {
c2660df3
VC		 1101 ql4_printk(KERN_WARNING, ha,
1102 "scsi%ld: %s: EEProm checksum invalid. "
1103 "Please update your EEPROM\n", ha->host_no,
1104 __func__);
afaf5a2d 1105
b3925514 1106 /* Attempt to set defaults */
afaf5a2d
DS		 1107 if (is_qla4010(ha))
1108 extHwConfig.Asuint32_t = 0x1912;
d915058f 1109 else if (is_qla4022(ha) | is_qla4032(ha))
afaf5a2d 1110 extHwConfig.Asuint32_t = 0x0023;
b3925514
MC		 1111 else
1112 return QLA_ERROR;
afaf5a2d
DS		 1113 }
1114 DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
1115 ha->host_no, __func__, extHwConfig.Asuint32_t));
1116
1117 spin_lock_irqsave(&ha->hardware_lock, flags);
1118 writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
1119 readl(isp_ext_hw_conf(ha));
1120 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1121
1122 ql4xxx_unlock_nvram(ha);
1123 ql4xxx_unlock_flash(ha);
1124
b3925514 1125 return QLA_SUCCESS;
afaf5a2d
DS		 1126}
1127
f4f5df23
VC		 1128/**
1129 * qla4_8xxx_pci_config() - Setup ISP82xx PCI configuration registers.
1130 * @ha: HA context
1131 */
1132void qla4_8xxx_pci_config(struct scsi_qla_host *ha)
1133{
1134 pci_set_master(ha->pdev);
1135}
1136
1137void qla4xxx_pci_config(struct scsi_qla_host *ha)
afaf5a2d 1138{
92b72736 1139 uint16_t w;
46235e60 1140 int status;
afaf5a2d 1141
c2660df3 1142 ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
afaf5a2d
DS		 1143
1144 pci_set_master(ha->pdev);
46235e60 1145 status = pci_set_mwi(ha->pdev);
afaf5a2d
DS		 1146 /*
1147 * We want to respect framework's setting of PCI configuration space
1148 * command register and also want to make sure that all bits of
1149 * interest to us are properly set in command register.
1150 */
1151 pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
92b72736 1152 w |= PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
afaf5a2d
DS		 1153 w &= ~PCI_COMMAND_INTX_DISABLE;
1154 pci_write_config_word(ha->pdev, PCI_COMMAND, w);
1155}
1156
1157static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
1158{
1159 int status = QLA_ERROR;
c301b026 1160 unsigned long max_wait_time;
afaf5a2d
DS		 1161 unsigned long flags;
1162 uint32_t mbox_status;
1163
c2660df3 1164 ql4_printk(KERN_INFO, ha, "Starting firmware ...\n");
afaf5a2d
DS		 1165
1166 /*
1167 * Start firmware from flash ROM
1168 *
1169 * WORKAROUND: Stuff a non-constant value that the firmware can
1170 * use as a seed for a random number generator in MB7 prior to
1171 * setting BOOT_ENABLE. Fixes problem where the TCP
1172 * connections use the same TCP ports after each reboot,
1173 * causing some connections to not get re-established.
1174 */
1175 DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
1176 ha->host_no, __func__));
1177
1178 spin_lock_irqsave(&ha->hardware_lock, flags);
1179 writel(jiffies, &ha->reg->mailbox[7]);
d915058f 1180 if (is_qla4022(ha) | is_qla4032(ha))
afaf5a2d
DS		 1181 writel(set_rmask(NVR_WRITE_ENABLE),
1182 &ha->reg->u1.isp4022.nvram);
1183
92b72736
DS		 1184 writel(2, &ha->reg->mailbox[6]);
1185 readl(&ha->reg->mailbox[6]);
1186
afaf5a2d
DS		 1187 writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
1188 readl(&ha->reg->ctrl_status);
1189 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1190
1191 /* Wait for firmware to come UP. */
c301b026
VC		 1192 DEBUG2(printk(KERN_INFO "scsi%ld: %s: Wait up to %d seconds for "
1193 "boot firmware to complete...\n",
1194 ha->host_no, __func__, FIRMWARE_UP_TOV));
1195 max_wait_time = jiffies + (FIRMWARE_UP_TOV * HZ);
afaf5a2d
DS		 1196 do {
1197 uint32_t ctrl_status;
1198
1199 spin_lock_irqsave(&ha->hardware_lock, flags);
1200 ctrl_status = readw(&ha->reg->ctrl_status);
1201 mbox_status = readw(&ha->reg->mailbox[0]);
1202 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1203
1204 if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
1205 break;
1206 if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
1207 break;
1208
c301b026 1209 DEBUG2(printk(KERN_INFO "scsi%ld: %s: Waiting for boot "
f581a3f7
VC		 1210 "firmware to complete... ctrl_sts=0x%x, remaining=%ld\n",
1211 ha->host_no, __func__, ctrl_status, max_wait_time));
afaf5a2d 1212
c301b026
VC		 1213 msleep_interruptible(250);
1214 } while (!time_after_eq(jiffies, max_wait_time));
afaf5a2d
DS		 1215
1216 if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
c301b026 1217 DEBUG(printk(KERN_INFO "scsi%ld: %s: Firmware has started\n",
afaf5a2d
DS		 1218 ha->host_no, __func__));
1219
1220 spin_lock_irqsave(&ha->hardware_lock, flags);
1221 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
1222 &ha->reg->ctrl_status);
1223 readl(&ha->reg->ctrl_status);
1224 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1225
1226 status = QLA_SUCCESS;
1227 } else {
1228 printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
1229 "- mbox status 0x%x\n", ha->host_no, __func__,
1230 mbox_status);
1231 status = QLA_ERROR;
1232 }
1233 return status;
1234}
1235
92b72736 1236int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
afaf5a2d 1237{
92b72736 1238#define QL4_LOCK_DRVR_WAIT 60
477ffb9d 1239#define QL4_LOCK_DRVR_SLEEP 1
afaf5a2d
DS		 1240
1241 int drvr_wait = QL4_LOCK_DRVR_WAIT;
1242 while (drvr_wait) {
92b72736 1243 if (ql4xxx_lock_drvr(a) == 0) {
477ffb9d 1244 ssleep(QL4_LOCK_DRVR_SLEEP);
afaf5a2d
DS		 1245 if (drvr_wait) {
1246 DEBUG2(printk("scsi%ld: %s: Waiting for "
92b72736
DS		 1247 "Global Init Semaphore(%d)...\n",
1248 a->host_no,
477ffb9d 1249 __func__, drvr_wait));
afaf5a2d
DS		 1250 }
1251 drvr_wait -= QL4_LOCK_DRVR_SLEEP;
1252 } else {
1253 DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
92b72736 1254 "acquired\n", a->host_no, __func__));
afaf5a2d
DS		 1255 return QLA_SUCCESS;
1256 }
1257 }
1258 return QLA_ERROR;
1259}
1260
1261/**
1262 * qla4xxx_start_firmware - starts qla4xxx firmware
1263 * @ha: Pointer to host adapter structure.
1264 *
3a4fa0a2 1265 * This routine performs the necessary steps to start the firmware for
afaf5a2d
DS		 1266 * the QLA4010 adapter.
1267 **/
f4f5df23 1268int qla4xxx_start_firmware(struct scsi_qla_host *ha)
afaf5a2d
DS		 1269{
1270 unsigned long flags = 0;
1271 uint32_t mbox_status;
1272 int status = QLA_ERROR;
1273 int soft_reset = 1;
1274 int config_chip = 0;
1275
d915058f 1276 if (is_qla4022(ha) | is_qla4032(ha))
afaf5a2d
DS		 1277 ql4xxx_set_mac_number(ha);
1278
1279 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1280 return QLA_ERROR;
1281
1282 spin_lock_irqsave(&ha->hardware_lock, flags);
1283
1284 DEBUG2(printk("scsi%ld: %s: port_ctrl = 0x%08X\n", ha->host_no,
1285 __func__, readw(isp_port_ctrl(ha))));
1286 DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
1287 __func__, readw(isp_port_status(ha))));
1288
1289 /* Is Hardware already initialized? */
1290 if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
1291 DEBUG(printk("scsi%ld: %s: Hardware has already been "
1292 "initialized\n", ha->host_no, __func__));
1293
1294 /* Receive firmware boot acknowledgement */
1295 mbox_status = readw(&ha->reg->mailbox[0]);
1296
1297 DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
1298 "0x%x\n", ha->host_no, __func__, mbox_status));
1299
1300 /* Is firmware already booted? */
1301 if (mbox_status == 0) {
1302 /* F/W not running, must be config by net driver */
1303 config_chip = 1;
1304 soft_reset = 0;
1305 } else {
1306 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
1307 &ha->reg->ctrl_status);
1308 readl(&ha->reg->ctrl_status);
1309 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1310 if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
1311 DEBUG2(printk("scsi%ld: %s: Get firmware "
1312 "state -- state = 0x%x\n",
1313 ha->host_no,
1314 __func__, ha->firmware_state));
1315 /* F/W is running */
1316 if (ha->firmware_state &
1317 FW_STATE_CONFIG_WAIT) {
1318 DEBUG2(printk("scsi%ld: %s: Firmware "
1319 "in known state -- "
1320 "config and "
1321 "boot, state = 0x%x\n",
1322 ha->host_no, __func__,
1323 ha->firmware_state));
1324 config_chip = 1;
1325 soft_reset = 0;
1326 }
1327 } else {
1328 DEBUG2(printk("scsi%ld: %s: Firmware in "
1329 "unknown state -- resetting,"
1330 " state = "
1331 "0x%x\n", ha->host_no, __func__,
1332 ha->firmware_state));
1333 }
1334 spin_lock_irqsave(&ha->hardware_lock, flags);
1335 }
1336 } else {
1337 DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
1338 "started - resetting\n", ha->host_no, __func__));
1339 }
1340 spin_unlock_irqrestore(&ha->hardware_lock, flags);
1341
1342 DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
1343 ha->host_no, __func__, soft_reset, config_chip));
1344 if (soft_reset) {
1345 DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
1346 __func__));
f4f5df23
VC		 1347 status = qla4xxx_soft_reset(ha); /* NOTE: acquires drvr
1348 * lock again, but ok */
afaf5a2d
DS		 1349 if (status == QLA_ERROR) {
1350 DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
1351 ha->host_no, __func__));
1352 ql4xxx_unlock_drvr(ha);
1353 return QLA_ERROR;
1354 }
1355 config_chip = 1;
1356
b1c11812 1357 /* Reset clears the semaphore, so acquire again */
afaf5a2d
DS		 1358 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
1359 return QLA_ERROR;
1360 }
1361
1362 if (config_chip) {
1363 if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
1364 status = qla4xxx_start_firmware_from_flash(ha);
1365 }
1366
1367 ql4xxx_unlock_drvr(ha);
1368 if (status == QLA_SUCCESS) {
afaf5a2d
DS		 1369 if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
1370 qla4xxx_get_crash_record(ha);
1371 } else {
1372 DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
1373 ha->host_no, __func__));
1374 }
1375 return status;
1376}
1377
1378
1379/**
1380 * qla4xxx_initialize_adapter - initiailizes hba
1381 * @ha: Pointer to host adapter structure.
1382 * @renew_ddb_list: Indicates what to do with the adapter's ddb list
1383 * after adapter recovery has completed.
1384 * 0=preserve ddb list, 1=destroy and rebuild ddb list
1385 *
1386 * This routine parforms all of the steps necessary to initialize the adapter.
1387 *
1388 **/
1389int qla4xxx_initialize_adapter(struct scsi_qla_host *ha,
1390 uint8_t renew_ddb_list)
1391{
1392 int status = QLA_ERROR;
1393 int8_t ip_address[IP_ADDR_LEN] = {0} ;
1394
1395 ha->eeprom_cmd_data = 0;
1396
f4f5df23
VC		 1397 ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
1398 ha->isp_ops->pci_config(ha);
afaf5a2d 1399
f4f5df23 1400 ha->isp_ops->disable_intrs(ha);
afaf5a2d
DS		 1401
1402 /* Initialize the Host adapter request/response queues and firmware */
f4f5df23
VC		 1403 if (ha->isp_ops->start_firmware(ha) == QLA_ERROR)
1404 goto exit_init_hba;
1405
1406 if (qla4xxx_get_fw_version(ha) == QLA_ERROR)
46235e60 1407 goto exit_init_hba;
afaf5a2d 1408
f4f5df23 1409 if (ha->isp_ops->get_sys_info(ha) == QLA_ERROR)
46235e60 1410 goto exit_init_hba;
afaf5a2d
DS		 1411
1412 if (qla4xxx_init_local_data(ha) == QLA_ERROR)
46235e60 1413 goto exit_init_hba;
afaf5a2d
DS		 1414
1415 status = qla4xxx_init_firmware(ha);
1416 if (status == QLA_ERROR)
46235e60 1417 goto exit_init_hba;
afaf5a2d
DS		 1418
1419 /*
1420 * FW is waiting to get an IP address from DHCP server: Skip building
1421 * the ddb_list and wait for DHCP lease acquired aen to come in
1422 * followed by 0x8014 aen" to trigger the tgt discovery process.
1423 */
2a49a78e 1424 if (ha->firmware_state & FW_STATE_CONFIGURING_IP)
46235e60 1425 goto exit_init_online;
afaf5a2d
DS		 1426
1427 /* Skip device discovery if ip and subnet is zero */
1428 if (memcmp(ha->ip_address, ip_address, IP_ADDR_LEN) == 0 ||
1429 memcmp(ha->subnet_mask, ip_address, IP_ADDR_LEN) == 0)
46235e60 1430 goto exit_init_online;
afaf5a2d
DS		 1431
1432 if (renew_ddb_list == PRESERVE_DDB_LIST) {
1433 /*
1434 * We want to preserve lun states (i.e. suspended, etc.)
1435 * for recovery initiated by the driver. So just update
1436 * the device states for the existing ddb_list.
1437 */
1438 qla4xxx_reinitialize_ddb_list(ha);
1439 } else if (renew_ddb_list == REBUILD_DDB_LIST) {
1440 /*
1441 * We want to build the ddb_list from scratch during
1442 * driver initialization and recovery initiated by the
1443 * INT_HBA_RESET IOCTL.
1444 */
1445 status = qla4xxx_initialize_ddb_list(ha);
1446 if (status == QLA_ERROR) {
1447 DEBUG2(printk("%s(%ld) Error occurred during build"
1448 "ddb list\n", __func__, ha->host_no));
1449 goto exit_init_hba;
1450 }
1451
1452 }
1453 if (!ha->tot_ddbs) {
1454 DEBUG2(printk("scsi%ld: Failed to initialize devices or none "
1455 "present in Firmware device database\n",
1456 ha->host_no));
1457 }
1458
46235e60 1459exit_init_online:
92b72736 1460 set_bit(AF_ONLINE, &ha->flags);
46235e60 1461exit_init_hba:
3710c60c
VC		 1462 if (is_qla8022(ha) && (status == QLA_ERROR)) {
1463 /* Since interrupts are registered in start_firmware for
1464 * 82xx, release them here if initialize_adapter fails */
1465 qla4xxx_free_irqs(ha);
1466 }
1467
f4f5df23
VC		 1468 DEBUG2(printk("scsi%ld: initialize adapter: %s\n", ha->host_no,
1469 status == QLA_ERROR ? "FAILED" : "SUCCEDED"));
afaf5a2d 1470 return status;
afaf5a2d
DS		 1471}
1472
1473/**
1474 * qla4xxx_add_device_dynamically - ddb addition due to an AEN
1475 * @ha: Pointer to host adapter structure.
1476 * @fw_ddb_index: Firmware's device database index
1477 *
1478 * This routine processes adds a device as a result of an 8014h AEN.
1479 **/
1480static void qla4xxx_add_device_dynamically(struct scsi_qla_host *ha,
1481 uint32_t fw_ddb_index)
1482{
1483 struct ddb_entry * ddb_entry;
92b72736 1484 uint32_t new_tgt;
afaf5a2d
DS		 1485
1486 /* First allocate a device structure */
92b72736 1487 ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index, &new_tgt);
afaf5a2d
DS		 1488 if (ddb_entry == NULL) {
1489 DEBUG2(printk(KERN_WARNING
1490 "scsi%ld: Unable to allocate memory to add "
1491 "fw_ddb_index %d\n", ha->host_no, fw_ddb_index));
1492 return;
1493 }
1494
92b72736
DS		 1495 if (!new_tgt && (ddb_entry->fw_ddb_index != fw_ddb_index)) {
1496 /* Target has been bound to a new fw_ddb_index */
1497 qla4xxx_free_ddb(ha, ddb_entry);
1498 ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
1499 if (ddb_entry == NULL) {
1500 DEBUG2(printk(KERN_WARNING
1501 "scsi%ld: Unable to allocate memory"
1502 " to add fw_ddb_index %d\n",
1503 ha->host_no, fw_ddb_index));
1504 return;
1505 }
1506 }
afaf5a2d
DS		 1507 if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
1508 QLA_ERROR) {
1509 ha->fw_ddb_index_map[fw_ddb_index] =
1510 (struct ddb_entry *)INVALID_ENTRY;
1511 DEBUG2(printk(KERN_WARNING
1512 "scsi%ld: failed to add new device at index "
1513 "[%d]\n Unable to retrieve fw ddb entry\n",
1514 ha->host_no, fw_ddb_index));
1515 qla4xxx_free_ddb(ha, ddb_entry);
1516 return;
1517 }
1518
1519 if (qla4xxx_add_sess(ddb_entry)) {
1520 DEBUG2(printk(KERN_WARNING
1521 "scsi%ld: failed to add new device at index "
1522 "[%d]\n Unable to add connection and session\n",
1523 ha->host_no, fw_ddb_index));
1524 qla4xxx_free_ddb(ha, ddb_entry);
1525 }
1526}
1527
1528/**
1529 * qla4xxx_process_ddb_changed - process ddb state change
1530 * @ha - Pointer to host adapter structure.
1531 * @fw_ddb_index - Firmware's device database index
1532 * @state - Device state
1533 *
1534 * This routine processes a Decive Database Changed AEN Event.
1535 **/
821d6e54
VC		 1536int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
1537 uint32_t state, uint32_t conn_err)
afaf5a2d
DS		 1538{
1539 struct ddb_entry * ddb_entry;
1540 uint32_t old_fw_ddb_device_state;
1541
1542 /* check for out of range index */
1543 if (fw_ddb_index >= MAX_DDB_ENTRIES)
1544 return QLA_ERROR;
1545
1546 /* Get the corresponging ddb entry */
1547 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
1548 /* Device does not currently exist in our database. */
1549 if (ddb_entry == NULL) {
1550 if (state == DDB_DS_SESSION_ACTIVE)
1551 qla4xxx_add_device_dynamically(ha, fw_ddb_index);
1552 return QLA_SUCCESS;
1553 }
1554
1555 /* Device already exists in our database. */
1556 old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
1557 DEBUG2(printk("scsi%ld: %s DDB - old state= 0x%x, new state=0x%x for "
1558 "index [%d]\n", ha->host_no, __func__,
1559 ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
1560 if (old_fw_ddb_device_state == state &&
1561 state == DDB_DS_SESSION_ACTIVE) {
e349fa35
VC		 1562 if (atomic_read(&ddb_entry->state) != DDB_STATE_ONLINE) {
1563 atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
1564 iscsi_unblock_session(ddb_entry->sess);
1565 }
afaf5a2d
DS		 1566 return QLA_SUCCESS;
1567 }
1568
1569 ddb_entry->fw_ddb_device_state = state;
1570 /* Device is back online. */
1571 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
50a29aec 1572 atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
afaf5a2d
DS		 1573 atomic_set(&ddb_entry->relogin_retry_count, 0);
1574 atomic_set(&ddb_entry->relogin_timer, 0);
1575 clear_bit(DF_RELOGIN, &ddb_entry->flags);
1576 clear_bit(DF_NO_RELOGIN, &ddb_entry->flags);
b635930d 1577 iscsi_unblock_session(ddb_entry->sess);
26974789
MC		 1578 iscsi_session_event(ddb_entry->sess,
1579 ISCSI_KEVENT_CREATE_SESSION);
afaf5a2d
DS		 1580 /*
1581 * Change the lun state to READY in case the lun TIMEOUT before
1582 * the device came back.
1583 */
1584 } else {
065aa1b4
VC		 1585 /* Device went away, mark device missing */
1586 if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE) {
c2660df3 1587 DEBUG2(ql4_printk(KERN_INFO, ha, "%s mark missing "
065aa1b4
VC		 1588 "ddb_entry 0x%p sess 0x%p conn 0x%p\n",
1589 __func__, ddb_entry,
1590 ddb_entry->sess, ddb_entry->conn));
afaf5a2d 1591 qla4xxx_mark_device_missing(ha, ddb_entry);
065aa1b4
VC		 1592 }
1593
afaf5a2d
DS		 1594 /*
1595 * Relogin if device state changed to a not active state.
821d6e54
VC		 1596 * However, do not relogin if a RELOGIN is in process, or
1597 * we are not allowed to relogin to this DDB.
afaf5a2d
DS		 1598 */
1599 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_FAILED &&
1600 !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
1601 !test_bit(DF_NO_RELOGIN, &ddb_entry->flags) &&
821d6e54 1602 qla4_is_relogin_allowed(ha, conn_err)) {
afaf5a2d
DS		 1603 /*
1604 * This triggers a relogin. After the relogin_timer
1605 * expires, the relogin gets scheduled. We must wait a
1606 * minimum amount of time since receiving an 0x8014 AEN
1607 * with failed device_state or a logout response before
1608 * we can issue another relogin.
1609 */
821d6e54 1610 /* Firmware pads this timeout: (time2wait +1).
afaf5a2d
DS		 1611 * Driver retry to login should be longer than F/W.
1612 * Otherwise F/W will fail
1613 * set_ddb() mbx cmd with 0x4005 since it still
1614 * counting down its time2wait.
1615 */
1616 atomic_set(&ddb_entry->relogin_timer, 0);
1617 atomic_set(&ddb_entry->retry_relogin_timer,
1618 ddb_entry->default_time2wait + 4);
f4f5df23
VC		 1619 DEBUG(printk("scsi%ld: %s: ddb[%d] "
1620 "initiate relogin after %d seconds\n",
1621 ha->host_no, __func__,
1622 ddb_entry->fw_ddb_index,
1623 ddb_entry->default_time2wait + 4));
1624 } else {
1625 DEBUG(printk("scsi%ld: %s: ddb[%d] "
1626 "relogin not initiated, state = %d, "
1627 "ddb_entry->flags = 0x%lx\n",
1628 ha->host_no, __func__,
1629 ddb_entry->fw_ddb_index,
1630 ddb_entry->fw_ddb_device_state,
1631 ddb_entry->flags));
afaf5a2d
DS		 1632 }
1633 }
afaf5a2d
DS		 1634 return QLA_SUCCESS;
1635}
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