xref: /openbmc/linux/drivers/scsi/qla4xxx/ql4_init.c (revision 4800cd83)
1 /*
2  * QLogic iSCSI HBA Driver
3  * Copyright (c)  2003-2010 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 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_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  **/
95 static 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 
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  **/
115 int 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 
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();
149 
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);
156 
157 	spin_unlock_irqrestore(&ha->hardware_lock, flags);
158 
159 	return QLA_SUCCESS;
160 }
161 
162 /**
163  * qla4xxx_get_sys_info - validate adapter MAC address(es)
164  * @ha: pointer to host adapter structure.
165  *
166  **/
167 int qla4xxx_get_sys_info(struct scsi_qla_host *ha)
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 
179 		goto exit_get_sys_info_no_free;
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 
189 		goto exit_get_sys_info;
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 
202 exit_get_sys_info:
203 	dma_free_coherent(&ha->pdev->dev, sizeof(*sys_info), sys_info,
204 			  sys_info_dma);
205 
206 exit_get_sys_info_no_free:
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  **/
215 static int qla4xxx_init_local_data(struct scsi_qla_host *ha)
216 {
217 	/* Initialize aen queue */
218 	ha->aen_q_count = MAX_AEN_ENTRIES;
219 
220 	return qla4xxx_get_firmware_status(ha);
221 }
222 
223 static uint8_t
224 qla4xxx_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 
295 static int qla4xxx_fw_ready(struct scsi_qla_host *ha)
296 {
297 	uint32_t timeout_count;
298 	int ready = 0;
299 
300 	DEBUG2(ql4_printk(KERN_INFO, ha, "Waiting for Firmware Ready..\n"));
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;
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 
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 
364 		if (ha->firmware_state == FW_STATE_READY) {
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) {
372 				DEBUG2(ql4_printk(KERN_INFO, ha,
373 				    "Firmware Ready..\n"));
374 				/* The firmware is ready to process SCSI
375 				   commands. */
376 				DEBUG2(ql4_printk(KERN_INFO, ha,
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"));
382 				DEBUG2(ql4_printk(KERN_INFO, ha,
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"));
388 				DEBUG2(ql4_printk(KERN_INFO, ha,
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"));
394 				DEBUG2(ql4_printk(KERN_INFO, ha,
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 			}
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));
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 
416 		msleep(1000);
417 	}			/* end of for */
418 
419 	if (timeout_count <= 0)
420 		DEBUG2(printk("scsi%ld: %s: FW Initialization timed out!\n",
421 			      ha->host_no, __func__));
422 
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__));
427 		ready = 1;
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__));
432 		ready = 1;
433 	}
434 
435 	return ready;
436 }
437 
438 /**
439  * qla4xxx_init_firmware - initializes the firmware.
440  * @ha: pointer to host adapter structure.
441  *
442  **/
443 static int qla4xxx_init_firmware(struct scsi_qla_host *ha)
444 {
445 	int status = QLA_ERROR;
446 
447 	if (is_aer_supported(ha) &&
448 	    test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
449 		return status;
450 
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 
457 	ql4_printk(KERN_INFO, ha, "Initializing firmware..\n");
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 
466 	return qla4xxx_get_firmware_status(ha);
467 }
468 
469 static struct ddb_entry* qla4xxx_get_ddb_entry(struct scsi_qla_host *ha,
470 						uint32_t fw_ddb_index,
471 						uint32_t *new_tgt)
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 
479 	*new_tgt = 0;
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__));
487 		goto exit_get_ddb_entry_no_free;
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) ==
493 				    QLA_ERROR) {
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));
497 		goto exit_get_ddb_entry;
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) {
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)) {
510 			found++;
511 			break;
512 		}
513 	}
514 
515 	/* if not found allocate new ddb */
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));
520 		*new_tgt = 1;
521 		ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
522 	}
523 
524 exit_get_ddb_entry:
525 	dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
526 			  fw_ddb_entry_dma);
527 
528 exit_get_ddb_entry_no_free:
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  **/
544 static int qla4xxx_update_ddb_entry(struct scsi_qla_host *ha,
545 				    struct ddb_entry *ddb_entry,
546 				    uint32_t fw_ddb_index)
547 {
548 	struct dev_db_entry *fw_ddb_entry = NULL;
549 	dma_addr_t fw_ddb_entry_dma;
550 	int status = QLA_ERROR;
551 	uint32_t conn_err;
552 
553 	if (ddb_entry == NULL) {
554 		DEBUG2(printk("scsi%ld: %s: ddb_entry is NULL\n", ha->host_no,
555 			      __func__));
556 
557 		goto exit_update_ddb_no_free;
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 
568 		goto exit_update_ddb_no_free;
569 	}
570 
571 	if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
572 				    fw_ddb_entry_dma, NULL, NULL,
573 				    &ddb_entry->fw_ddb_device_state, &conn_err,
574 				    &ddb_entry->tcp_source_port_num,
575 				    &ddb_entry->connection_id) ==
576 				    QLA_ERROR) {
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;
585 	ddb_entry->options = le16_to_cpu(fw_ddb_entry->options);
586 	ddb_entry->target_session_id = le16_to_cpu(fw_ddb_entry->tsid);
587 	ddb_entry->task_mgmt_timeout =
588 		le16_to_cpu(fw_ddb_entry->def_timeout);
589 	ddb_entry->CmdSn = 0;
590 	ddb_entry->exe_throttle = le16_to_cpu(fw_ddb_entry->exec_throttle);
591 	ddb_entry->default_relogin_timeout =
592 		le16_to_cpu(fw_ddb_entry->def_timeout);
593 	ddb_entry->default_time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
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 
599 	ddb_entry->port = le16_to_cpu(fw_ddb_entry->port);
600 	ddb_entry->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
601 	memcpy(ddb_entry->isid, fw_ddb_entry->isid, sizeof(ddb_entry->isid));
602 
603 	memcpy(&ddb_entry->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
604 	       min(sizeof(ddb_entry->iscsi_name),
605 		   sizeof(fw_ddb_entry->iscsi_name)));
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)));
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)));
611 
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)));
629 
630 		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: DDB[%d] State %04x"
631 					" ConnErr %08x IP %pI6 "
632 					":%04d \"%s\"\n",
633 					__func__, fw_ddb_index,
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
639 		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: DDB[%d] State %04x"
640 					" ConnErr %08x IP %pI4 "
641 					":%04d \"%s\"\n",
642 					__func__, fw_ddb_index,
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));
647 exit_update_ddb:
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 
652 exit_update_ddb_no_free:
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  **/
664 static struct ddb_entry * qla4xxx_alloc_ddb(struct scsi_qla_host *ha,
665 					    uint32_t fw_ddb_index)
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;
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 
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  **/
700 int 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) {
708 		DEBUG2(ql4_printk(KERN_INFO, ha,
709 		    ": conn_err=0x%08x, send target completed"
710 		    " or access denied failure\n", conn_err));
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.*/
717 		DEBUG2(ql4_printk(KERN_INFO, ha,
718 		    ": conn_err=0x%08x, do not retry relogin\n",
719 		    conn_err));
720 		relogin = 0;
721 	}
722 
723 	return relogin;
724 }
725 
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  **/
734 static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
735 {
736 	int status = QLA_ERROR;
737 	uint32_t fw_ddb_index = 0;
738 	uint32_t next_fw_ddb_index = 0;
739 	uint32_t ddb_state;
740 	uint32_t conn_err;
741 	struct ddb_entry *ddb_entry;
742 	struct dev_db_entry *fw_ddb_entry = NULL;
743 	dma_addr_t fw_ddb_entry_dma;
744 	uint32_t ipv6_device;
745 	uint32_t new_tgt;
746 
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) {
750 		DEBUG2(ql4_printk(KERN_INFO, ha, "%s: DMA alloc failed\n",
751 				__func__));
752 
753 		goto exit_build_ddb_list_no_free;
754 	}
755 
756 	ql4_printk(KERN_INFO, ha, "Initializing DDBs ...\n");
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 */
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) {
765 			DEBUG2(printk("scsi%ld: %s: get_ddb_entry, "
766 				      "fw_ddb_index %d failed", ha->host_no,
767 				      __func__, fw_ddb_index));
768 			goto exit_build_ddb_list;
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));
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)) {
787 				qla4xxx_set_ddb_entry(ha, fw_ddb_index, 0);
788 				if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index,
789 							NULL, 0, NULL,
790 							&next_fw_ddb_index,
791 							&ddb_state, &conn_err,
792 							NULL, NULL)
793 						== QLA_ERROR) {
794 					DEBUG2(printk("scsi%ld: %s:"
795 						"get_ddb_entry %d failed\n",
796 						ha->host_no,
797 						__func__, fw_ddb_index));
798 					goto exit_build_ddb_list;
799 				}
800 			}
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. */
813 		ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index, &new_tgt);
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));
818 			goto exit_build_ddb_list;
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 
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));
829 			goto exit_build_ddb_list;
830 		}
831 
832 next_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 
839 	status = QLA_SUCCESS;
840 	ql4_printk(KERN_INFO, ha, "DDB list done..\n");
841 
842 exit_build_ddb_list:
843 	dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
844 		fw_ddb_entry_dma);
845 
846 exit_build_ddb_list_no_free:
847 	return status;
848 }
849 
850 struct qla4_relog_scan {
851 	int halt_wait;
852 	uint32_t conn_err;
853 	uint32_t fw_ddb_index;
854 	uint32_t next_fw_ddb_index;
855 	uint32_t fw_ddb_device_state;
856 };
857 
858 static int qla4_test_rdy(struct scsi_qla_host *ha, struct qla4_relog_scan *rs)
859 {
860 	struct ddb_entry *ddb_entry;
861 
862 	if (qla4_is_relogin_allowed(ha, rs->conn_err)) {
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 
886 static 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  **/
927 static 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 
963 static 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 
988 static 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 
1005 	/* Wait for an AEN */
1006 	qla4xxx_devices_ready(ha);
1007 
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 
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 /**
1027  * qla4xxx_reinitialize_ddb_list - update the driver ddb list
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  **/
1033 int 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));
1047 			iscsi_unblock_session(ddb_entry->sess);
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  **/
1062 int 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 
1071 	DEBUG2(printk("scsi%ld: Relogin ddb [%d]. TOV=%d\n", ha->host_no,
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 
1079 static 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)
1087 		return QLA_ERROR;
1088 	if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
1089 		ql4xxx_unlock_flash(ha);
1090 		return QLA_ERROR;
1091 	}
1092 
1093 	/* Get EEPRom Parameters from NVRAM and validate */
1094 	ql4_printk(KERN_INFO, ha, "Configuring NVRAM ...\n");
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 {
1101 		ql4_printk(KERN_WARNING, ha,
1102 		    "scsi%ld: %s: EEProm checksum invalid.  "
1103 		    "Please update your EEPROM\n", ha->host_no,
1104 		    __func__);
1105 
1106 		/* Attempt to set defaults */
1107 		if (is_qla4010(ha))
1108 			extHwConfig.Asuint32_t = 0x1912;
1109 		else if (is_qla4022(ha) | is_qla4032(ha))
1110 			extHwConfig.Asuint32_t = 0x0023;
1111 		else
1112 			return QLA_ERROR;
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 
1125 	return QLA_SUCCESS;
1126 }
1127 
1128 /**
1129  * qla4_8xxx_pci_config() - Setup ISP82xx PCI configuration registers.
1130  * @ha: HA context
1131  */
1132 void qla4_8xxx_pci_config(struct scsi_qla_host *ha)
1133 {
1134 	pci_set_master(ha->pdev);
1135 }
1136 
1137 void qla4xxx_pci_config(struct scsi_qla_host *ha)
1138 {
1139 	uint16_t w;
1140 	int status;
1141 
1142 	ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
1143 
1144 	pci_set_master(ha->pdev);
1145 	status = pci_set_mwi(ha->pdev);
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);
1152 	w |= PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
1153 	w &= ~PCI_COMMAND_INTX_DISABLE;
1154 	pci_write_config_word(ha->pdev, PCI_COMMAND, w);
1155 }
1156 
1157 static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
1158 {
1159 	int status = QLA_ERROR;
1160 	unsigned long max_wait_time;
1161 	unsigned long flags;
1162 	uint32_t mbox_status;
1163 
1164 	ql4_printk(KERN_INFO, ha, "Starting firmware ...\n");
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]);
1180 	if (is_qla4022(ha) | is_qla4032(ha))
1181 		writel(set_rmask(NVR_WRITE_ENABLE),
1182 		       &ha->reg->u1.isp4022.nvram);
1183 
1184         writel(2, &ha->reg->mailbox[6]);
1185         readl(&ha->reg->mailbox[6]);
1186 
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. */
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);
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 
1209 		DEBUG2(printk(KERN_INFO "scsi%ld: %s: Waiting for boot "
1210 		    "firmware to complete... ctrl_sts=0x%x, remaining=%ld\n",
1211 		    ha->host_no, __func__, ctrl_status, max_wait_time));
1212 
1213 		msleep_interruptible(250);
1214 	} while (!time_after_eq(jiffies, max_wait_time));
1215 
1216 	if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
1217 		DEBUG(printk(KERN_INFO "scsi%ld: %s: Firmware has started\n",
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 
1236 int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
1237 {
1238 #define QL4_LOCK_DRVR_WAIT	60
1239 #define QL4_LOCK_DRVR_SLEEP	1
1240 
1241 	int drvr_wait = QL4_LOCK_DRVR_WAIT;
1242 	while (drvr_wait) {
1243 		if (ql4xxx_lock_drvr(a) == 0) {
1244 			ssleep(QL4_LOCK_DRVR_SLEEP);
1245 			if (drvr_wait) {
1246 				DEBUG2(printk("scsi%ld: %s: Waiting for "
1247 					      "Global Init Semaphore(%d)...\n",
1248 					      a->host_no,
1249 					      __func__, drvr_wait));
1250 			}
1251 			drvr_wait -= QL4_LOCK_DRVR_SLEEP;
1252 		} else {
1253 			DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
1254 				      "acquired\n", a->host_no, __func__));
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  *
1265  * This routine performs the necessary steps to start the firmware for
1266  * the QLA4010 adapter.
1267  **/
1268 int qla4xxx_start_firmware(struct scsi_qla_host *ha)
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 
1276 	if (is_qla4022(ha) | is_qla4032(ha))
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__));
1347 		status = qla4xxx_soft_reset(ha);	/* NOTE: acquires drvr
1348 							 * lock again, but ok */
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 
1357 		/* Reset clears the semaphore, so acquire again */
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) {
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  **/
1389 int 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 
1397 	ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
1398 	ha->isp_ops->pci_config(ha);
1399 
1400 	ha->isp_ops->disable_intrs(ha);
1401 
1402 	/* Initialize the Host adapter request/response queues and firmware */
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)
1407 		goto exit_init_hba;
1408 
1409 	if (ha->isp_ops->get_sys_info(ha) == QLA_ERROR)
1410 		goto exit_init_hba;
1411 
1412 	if (qla4xxx_init_local_data(ha) == QLA_ERROR)
1413 		goto exit_init_hba;
1414 
1415 	status = qla4xxx_init_firmware(ha);
1416 	if (status == QLA_ERROR)
1417 		goto exit_init_hba;
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 	 */
1424 	if (ha->firmware_state & FW_STATE_CONFIGURING_IP)
1425 		goto exit_init_online;
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)
1430 		goto exit_init_online;
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 
1459 exit_init_online:
1460 	set_bit(AF_ONLINE, &ha->flags);
1461 exit_init_hba:
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 
1468 	DEBUG2(printk("scsi%ld: initialize adapter: %s\n", ha->host_no,
1469 	    status == QLA_ERROR ? "FAILED" : "SUCCEDED"));
1470 	return status;
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  **/
1480 static void qla4xxx_add_device_dynamically(struct scsi_qla_host *ha,
1481 					   uint32_t fw_ddb_index)
1482 {
1483 	struct ddb_entry * ddb_entry;
1484 	uint32_t new_tgt;
1485 
1486 	/* First allocate a device structure */
1487 	ddb_entry = qla4xxx_get_ddb_entry(ha, fw_ddb_index, &new_tgt);
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 
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 	}
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  **/
1536 int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
1537 		uint32_t state, uint32_t conn_err)
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) {
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 		}
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) {
1572 		atomic_set(&ddb_entry->state, DDB_STATE_ONLINE);
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);
1577 		iscsi_unblock_session(ddb_entry->sess);
1578 		iscsi_session_event(ddb_entry->sess,
1579 				    ISCSI_KEVENT_CREATE_SESSION);
1580 		/*
1581 		 * Change the lun state to READY in case the lun TIMEOUT before
1582 		 * the device came back.
1583 		 */
1584 	} else {
1585 		/* Device went away, mark device missing */
1586 		if (atomic_read(&ddb_entry->state) == DDB_STATE_ONLINE) {
1587 			DEBUG2(ql4_printk(KERN_INFO, ha, "%s mark missing "
1588 					"ddb_entry 0x%p sess 0x%p conn 0x%p\n",
1589 					__func__, ddb_entry,
1590 					ddb_entry->sess, ddb_entry->conn));
1591 			qla4xxx_mark_device_missing(ha, ddb_entry);
1592 		}
1593 
1594 		/*
1595 		 * Relogin if device state changed to a not active state.
1596 		 * However, do not relogin if a RELOGIN is in process, or
1597 		 * we are not allowed to relogin to this DDB.
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) &&
1602 		    qla4_is_relogin_allowed(ha, conn_err)) {
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 			 */
1610 			/* Firmware pads this timeout: (time2wait +1).
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);
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));
1632 		}
1633 	}
1634 	return QLA_SUCCESS;
1635 }
1636