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Merge branch 'for-linus' of git://git.kernel.dk/linux-block
[mirror_ubuntu-eoan-kernel.git] / drivers / scsi / qla4xxx / ql4_init.c
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 void ql4xxx_set_mac_number(struct scsi_qla_host *ha)
15 {
16 uint32_t value;
17 uint8_t func_number;
18 unsigned long flags;
19
20 /* Get the function number */
21 spin_lock_irqsave(&ha->hardware_lock, flags);
22 value = readw(&ha->reg->ctrl_status);
23 spin_unlock_irqrestore(&ha->hardware_lock, flags);
24
25 func_number = (uint8_t) ((value >> 4) & 0x30);
26 switch (value & ISP_CONTROL_FN_MASK) {
27 case ISP_CONTROL_FN0_SCSI:
28 ha->mac_index = 1;
29 break;
30 case ISP_CONTROL_FN1_SCSI:
31 ha->mac_index = 3;
32 break;
33 default:
34 DEBUG2(printk("scsi%ld: %s: Invalid function number, "
35 "ispControlStatus = 0x%x\n", ha->host_no,
36 __func__, value));
37 break;
38 }
39 DEBUG2(printk("scsi%ld: %s: mac_index %d.\n", ha->host_no, __func__,
40 ha->mac_index));
41 }
42
43 /**
44 * qla4xxx_free_ddb - deallocate ddb
45 * @ha: pointer to host adapter structure.
46 * @ddb_entry: pointer to device database entry
47 *
48 * This routine marks a DDB entry INVALID
49 **/
50 void qla4xxx_free_ddb(struct scsi_qla_host *ha,
51 struct ddb_entry *ddb_entry)
52 {
53 /* Remove device pointer from index mapping arrays */
54 ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] =
55 (struct ddb_entry *) INVALID_ENTRY;
56 ha->tot_ddbs--;
57 }
58
59 /**
60 * qla4xxx_init_response_q_entries() - Initializes response queue entries.
61 * @ha: HA context
62 *
63 * Beginning of request ring has initialization control block already built
64 * by nvram config routine.
65 **/
66 static void qla4xxx_init_response_q_entries(struct scsi_qla_host *ha)
67 {
68 uint16_t cnt;
69 struct response *pkt;
70
71 pkt = (struct response *)ha->response_ptr;
72 for (cnt = 0; cnt < RESPONSE_QUEUE_DEPTH; cnt++) {
73 pkt->signature = RESPONSE_PROCESSED;
74 pkt++;
75 }
76 }
77
78 /**
79 * qla4xxx_init_rings - initialize hw queues
80 * @ha: pointer to host adapter structure.
81 *
82 * This routine initializes the internal queues for the specified adapter.
83 * The QLA4010 requires us to restart the queues at index 0.
84 * The QLA4000 doesn't care, so just default to QLA4010's requirement.
85 **/
86 int qla4xxx_init_rings(struct scsi_qla_host *ha)
87 {
88 unsigned long flags = 0;
89 int i;
90
91 /* Initialize request queue. */
92 spin_lock_irqsave(&ha->hardware_lock, flags);
93 ha->request_out = 0;
94 ha->request_in = 0;
95 ha->request_ptr = &ha->request_ring[ha->request_in];
96 ha->req_q_count = REQUEST_QUEUE_DEPTH;
97
98 /* Initialize response queue. */
99 ha->response_in = 0;
100 ha->response_out = 0;
101 ha->response_ptr = &ha->response_ring[ha->response_out];
102
103 if (is_qla8022(ha)) {
104 writel(0,
105 (unsigned long __iomem *)&ha->qla4_8xxx_reg->req_q_out);
106 writel(0,
107 (unsigned long __iomem *)&ha->qla4_8xxx_reg->rsp_q_in);
108 writel(0,
109 (unsigned long __iomem *)&ha->qla4_8xxx_reg->rsp_q_out);
110 } else {
111 /*
112 * Initialize DMA Shadow registers. The firmware is really
113 * supposed to take care of this, but on some uniprocessor
114 * systems, the shadow registers aren't cleared-- causing
115 * the interrupt_handler to think there are responses to be
116 * processed when there aren't.
117 */
118 ha->shadow_regs->req_q_out = __constant_cpu_to_le32(0);
119 ha->shadow_regs->rsp_q_in = __constant_cpu_to_le32(0);
120 wmb();
121
122 writel(0, &ha->reg->req_q_in);
123 writel(0, &ha->reg->rsp_q_out);
124 readl(&ha->reg->rsp_q_out);
125 }
126
127 qla4xxx_init_response_q_entries(ha);
128
129 /* Initialize mabilbox active array */
130 for (i = 0; i < MAX_MRB; i++)
131 ha->active_mrb_array[i] = NULL;
132
133 spin_unlock_irqrestore(&ha->hardware_lock, flags);
134
135 return QLA_SUCCESS;
136 }
137
138 /**
139 * qla4xxx_get_sys_info - validate adapter MAC address(es)
140 * @ha: pointer to host adapter structure.
141 *
142 **/
143 int qla4xxx_get_sys_info(struct scsi_qla_host *ha)
144 {
145 struct flash_sys_info *sys_info;
146 dma_addr_t sys_info_dma;
147 int status = QLA_ERROR;
148
149 sys_info = dma_alloc_coherent(&ha->pdev->dev, sizeof(*sys_info),
150 &sys_info_dma, GFP_KERNEL);
151 if (sys_info == NULL) {
152 DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
153 ha->host_no, __func__));
154
155 goto exit_get_sys_info_no_free;
156 }
157 memset(sys_info, 0, sizeof(*sys_info));
158
159 /* Get flash sys info */
160 if (qla4xxx_get_flash(ha, sys_info_dma, FLASH_OFFSET_SYS_INFO,
161 sizeof(*sys_info)) != QLA_SUCCESS) {
162 DEBUG2(printk("scsi%ld: %s: get_flash FLASH_OFFSET_SYS_INFO "
163 "failed\n", ha->host_no, __func__));
164
165 goto exit_get_sys_info;
166 }
167
168 /* Save M.A.C. address & serial_number */
169 memcpy(ha->my_mac, &sys_info->physAddr[0].address[0],
170 min(sizeof(ha->my_mac),
171 sizeof(sys_info->physAddr[0].address)));
172 memcpy(ha->serial_number, &sys_info->acSerialNumber,
173 min(sizeof(ha->serial_number),
174 sizeof(sys_info->acSerialNumber)));
175
176 status = QLA_SUCCESS;
177
178 exit_get_sys_info:
179 dma_free_coherent(&ha->pdev->dev, sizeof(*sys_info), sys_info,
180 sys_info_dma);
181
182 exit_get_sys_info_no_free:
183 return status;
184 }
185
186 /**
187 * qla4xxx_init_local_data - initialize adapter specific local data
188 * @ha: pointer to host adapter structure.
189 *
190 **/
191 static int qla4xxx_init_local_data(struct scsi_qla_host *ha)
192 {
193 /* Initialize aen queue */
194 ha->aen_q_count = MAX_AEN_ENTRIES;
195
196 return qla4xxx_get_firmware_status(ha);
197 }
198
199 static uint8_t
200 qla4xxx_wait_for_ip_config(struct scsi_qla_host *ha)
201 {
202 uint8_t ipv4_wait = 0;
203 uint8_t ipv6_wait = 0;
204 int8_t ip_address[IPv6_ADDR_LEN] = {0} ;
205
206 /* If both IPv4 & IPv6 are enabled, possibly only one
207 * IP address may be acquired, so check to see if we
208 * need to wait for another */
209 if (is_ipv4_enabled(ha) && is_ipv6_enabled(ha)) {
210 if (((ha->addl_fw_state & FW_ADDSTATE_DHCPv4_ENABLED) != 0) &&
211 ((ha->addl_fw_state &
212 FW_ADDSTATE_DHCPv4_LEASE_ACQUIRED) == 0)) {
213 ipv4_wait = 1;
214 }
215 if (((ha->ip_config.ipv6_addl_options &
216 IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) != 0) &&
217 ((ha->ip_config.ipv6_link_local_state ==
218 IP_ADDRSTATE_ACQUIRING) ||
219 (ha->ip_config.ipv6_addr0_state ==
220 IP_ADDRSTATE_ACQUIRING) ||
221 (ha->ip_config.ipv6_addr1_state ==
222 IP_ADDRSTATE_ACQUIRING))) {
223
224 ipv6_wait = 1;
225
226 if ((ha->ip_config.ipv6_link_local_state ==
227 IP_ADDRSTATE_PREFERRED) ||
228 (ha->ip_config.ipv6_addr0_state ==
229 IP_ADDRSTATE_PREFERRED) ||
230 (ha->ip_config.ipv6_addr1_state ==
231 IP_ADDRSTATE_PREFERRED)) {
232 DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
233 "Preferred IP configured."
234 " Don't wait!\n", ha->host_no,
235 __func__));
236 ipv6_wait = 0;
237 }
238 if (memcmp(&ha->ip_config.ipv6_default_router_addr,
239 ip_address, IPv6_ADDR_LEN) == 0) {
240 DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
241 "No Router configured. "
242 "Don't wait!\n", ha->host_no,
243 __func__));
244 ipv6_wait = 0;
245 }
246 if ((ha->ip_config.ipv6_default_router_state ==
247 IPV6_RTRSTATE_MANUAL) &&
248 (ha->ip_config.ipv6_link_local_state ==
249 IP_ADDRSTATE_TENTATIVE) &&
250 (memcmp(&ha->ip_config.ipv6_link_local_addr,
251 &ha->ip_config.ipv6_default_router_addr, 4) ==
252 0)) {
253 DEBUG2(printk("scsi%ld: %s: LinkLocal Router & "
254 "IP configured. Don't wait!\n",
255 ha->host_no, __func__));
256 ipv6_wait = 0;
257 }
258 }
259 if (ipv4_wait || ipv6_wait) {
260 DEBUG2(printk("scsi%ld: %s: Wait for additional "
261 "IP(s) \"", ha->host_no, __func__));
262 if (ipv4_wait)
263 DEBUG2(printk("IPv4 "));
264 if (ha->ip_config.ipv6_link_local_state ==
265 IP_ADDRSTATE_ACQUIRING)
266 DEBUG2(printk("IPv6LinkLocal "));
267 if (ha->ip_config.ipv6_addr0_state ==
268 IP_ADDRSTATE_ACQUIRING)
269 DEBUG2(printk("IPv6Addr0 "));
270 if (ha->ip_config.ipv6_addr1_state ==
271 IP_ADDRSTATE_ACQUIRING)
272 DEBUG2(printk("IPv6Addr1 "));
273 DEBUG2(printk("\"\n"));
274 }
275 }
276
277 return ipv4_wait|ipv6_wait;
278 }
279
280 static int qla4xxx_fw_ready(struct scsi_qla_host *ha)
281 {
282 uint32_t timeout_count;
283 int ready = 0;
284
285 DEBUG2(ql4_printk(KERN_INFO, ha, "Waiting for Firmware Ready..\n"));
286 for (timeout_count = ADAPTER_INIT_TOV; timeout_count > 0;
287 timeout_count--) {
288 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
289 qla4xxx_get_dhcp_ip_address(ha);
290
291 /* Get firmware state. */
292 if (qla4xxx_get_firmware_state(ha) != QLA_SUCCESS) {
293 DEBUG2(printk("scsi%ld: %s: unable to get firmware "
294 "state\n", ha->host_no, __func__));
295 break;
296 }
297
298 if (ha->firmware_state & FW_STATE_ERROR) {
299 DEBUG2(printk("scsi%ld: %s: an unrecoverable error has"
300 " occurred\n", ha->host_no, __func__));
301 break;
302
303 }
304 if (ha->firmware_state & FW_STATE_CONFIG_WAIT) {
305 /*
306 * The firmware has not yet been issued an Initialize
307 * Firmware command, so issue it now.
308 */
309 if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR)
310 break;
311
312 /* Go back and test for ready state - no wait. */
313 continue;
314 }
315
316 if (ha->firmware_state & FW_STATE_WAIT_AUTOCONNECT) {
317 DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
318 "AUTOCONNECT in progress\n",
319 ha->host_no, __func__));
320 }
321
322 if (ha->firmware_state & FW_STATE_CONFIGURING_IP) {
323 DEBUG2(printk(KERN_INFO "scsi%ld: %s: fwstate:"
324 " CONFIGURING IP\n",
325 ha->host_no, __func__));
326 /*
327 * Check for link state after 15 secs and if link is
328 * still DOWN then, cable is unplugged. Ignore "DHCP
329 * in Progress/CONFIGURING IP" bit to check if firmware
330 * is in ready state or not after 15 secs.
331 * This is applicable for both 2.x & 3.x firmware
332 */
333 if (timeout_count <= (ADAPTER_INIT_TOV - 15)) {
334 if (ha->addl_fw_state & FW_ADDSTATE_LINK_UP) {
335 DEBUG2(printk(KERN_INFO "scsi%ld: %s:"
336 " LINK UP (Cable plugged)\n",
337 ha->host_no, __func__));
338 } else if (ha->firmware_state &
339 (FW_STATE_CONFIGURING_IP |
340 FW_STATE_READY)) {
341 DEBUG2(printk(KERN_INFO "scsi%ld: %s: "
342 "LINK DOWN (Cable unplugged)\n",
343 ha->host_no, __func__));
344 ha->firmware_state = FW_STATE_READY;
345 }
346 }
347 }
348
349 if (ha->firmware_state == FW_STATE_READY) {
350 /* If DHCP IP Addr is available, retrieve it now. */
351 if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR,
352 &ha->dpc_flags))
353 qla4xxx_get_dhcp_ip_address(ha);
354
355 if (!qla4xxx_wait_for_ip_config(ha) ||
356 timeout_count == 1) {
357 DEBUG2(ql4_printk(KERN_INFO, ha,
358 "Firmware Ready..\n"));
359 /* The firmware is ready to process SCSI
360 commands. */
361 DEBUG2(ql4_printk(KERN_INFO, ha,
362 "scsi%ld: %s: MEDIA TYPE"
363 " - %s\n", ha->host_no,
364 __func__, (ha->addl_fw_state &
365 FW_ADDSTATE_OPTICAL_MEDIA)
366 != 0 ? "OPTICAL" : "COPPER"));
367 DEBUG2(ql4_printk(KERN_INFO, ha,
368 "scsi%ld: %s: DHCPv4 STATE"
369 " Enabled %s\n", ha->host_no,
370 __func__, (ha->addl_fw_state &
371 FW_ADDSTATE_DHCPv4_ENABLED) != 0 ?
372 "YES" : "NO"));
373 DEBUG2(ql4_printk(KERN_INFO, ha,
374 "scsi%ld: %s: LINK %s\n",
375 ha->host_no, __func__,
376 (ha->addl_fw_state &
377 FW_ADDSTATE_LINK_UP) != 0 ?
378 "UP" : "DOWN"));
379 DEBUG2(ql4_printk(KERN_INFO, ha,
380 "scsi%ld: %s: iSNS Service "
381 "Started %s\n",
382 ha->host_no, __func__,
383 (ha->addl_fw_state &
384 FW_ADDSTATE_ISNS_SVC_ENABLED) != 0 ?
385 "YES" : "NO"));
386
387 ready = 1;
388 break;
389 }
390 }
391 DEBUG2(printk("scsi%ld: %s: waiting on fw, state=%x:%x - "
392 "seconds expired= %d\n", ha->host_no, __func__,
393 ha->firmware_state, ha->addl_fw_state,
394 timeout_count));
395 if (is_qla4032(ha) &&
396 !(ha->addl_fw_state & FW_ADDSTATE_LINK_UP) &&
397 (timeout_count < ADAPTER_INIT_TOV - 5)) {
398 break;
399 }
400
401 msleep(1000);
402 } /* end of for */
403
404 if (timeout_count <= 0)
405 DEBUG2(printk("scsi%ld: %s: FW Initialization timed out!\n",
406 ha->host_no, __func__));
407
408 if (ha->firmware_state & FW_STATE_CONFIGURING_IP) {
409 DEBUG2(printk("scsi%ld: %s: FW initialized, but is reporting "
410 "it's waiting to configure an IP address\n",
411 ha->host_no, __func__));
412 ready = 1;
413 } else if (ha->firmware_state & FW_STATE_WAIT_AUTOCONNECT) {
414 DEBUG2(printk("scsi%ld: %s: FW initialized, but "
415 "auto-discovery still in process\n",
416 ha->host_no, __func__));
417 ready = 1;
418 }
419
420 return ready;
421 }
422
423 /**
424 * qla4xxx_init_firmware - initializes the firmware.
425 * @ha: pointer to host adapter structure.
426 *
427 **/
428 static int qla4xxx_init_firmware(struct scsi_qla_host *ha)
429 {
430 int status = QLA_ERROR;
431
432 if (is_aer_supported(ha) &&
433 test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
434 return status;
435
436 /* For 82xx, stop firmware before initializing because if BIOS
437 * has previously initialized firmware, then driver's initialize
438 * firmware will fail. */
439 if (is_qla8022(ha))
440 qla4_8xxx_stop_firmware(ha);
441
442 ql4_printk(KERN_INFO, ha, "Initializing firmware..\n");
443 if (qla4xxx_initialize_fw_cb(ha) == QLA_ERROR) {
444 DEBUG2(printk("scsi%ld: %s: Failed to initialize firmware "
445 "control block\n", ha->host_no, __func__));
446 return status;
447 }
448 if (!qla4xxx_fw_ready(ha))
449 return status;
450
451 return qla4xxx_get_firmware_status(ha);
452 }
453
454 static void qla4xxx_set_model_info(struct scsi_qla_host *ha)
455 {
456 uint16_t board_id_string[8];
457 int i;
458 int size = sizeof(ha->nvram->isp4022.boardIdStr);
459 int offset = offsetof(struct eeprom_data, isp4022.boardIdStr) / 2;
460
461 for (i = 0; i < (size / 2) ; i++) {
462 board_id_string[i] = rd_nvram_word(ha, offset);
463 offset += 1;
464 }
465
466 memcpy(ha->model_name, board_id_string, size);
467 }
468
469 static int qla4xxx_config_nvram(struct scsi_qla_host *ha)
470 {
471 unsigned long flags;
472 union external_hw_config_reg extHwConfig;
473
474 DEBUG2(printk("scsi%ld: %s: Get EEProm parameters \n", ha->host_no,
475 __func__));
476 if (ql4xxx_lock_flash(ha) != QLA_SUCCESS)
477 return QLA_ERROR;
478 if (ql4xxx_lock_nvram(ha) != QLA_SUCCESS) {
479 ql4xxx_unlock_flash(ha);
480 return QLA_ERROR;
481 }
482
483 /* Get EEPRom Parameters from NVRAM and validate */
484 ql4_printk(KERN_INFO, ha, "Configuring NVRAM ...\n");
485 if (qla4xxx_is_nvram_configuration_valid(ha) == QLA_SUCCESS) {
486 spin_lock_irqsave(&ha->hardware_lock, flags);
487 extHwConfig.Asuint32_t =
488 rd_nvram_word(ha, eeprom_ext_hw_conf_offset(ha));
489 spin_unlock_irqrestore(&ha->hardware_lock, flags);
490 } else {
491 ql4_printk(KERN_WARNING, ha,
492 "scsi%ld: %s: EEProm checksum invalid. "
493 "Please update your EEPROM\n", ha->host_no,
494 __func__);
495
496 /* Attempt to set defaults */
497 if (is_qla4010(ha))
498 extHwConfig.Asuint32_t = 0x1912;
499 else if (is_qla4022(ha) | is_qla4032(ha))
500 extHwConfig.Asuint32_t = 0x0023;
501 else
502 return QLA_ERROR;
503 }
504
505 if (is_qla4022(ha) || is_qla4032(ha))
506 qla4xxx_set_model_info(ha);
507 else
508 strcpy(ha->model_name, "QLA4010");
509
510 DEBUG(printk("scsi%ld: %s: Setting extHwConfig to 0xFFFF%04x\n",
511 ha->host_no, __func__, extHwConfig.Asuint32_t));
512
513 spin_lock_irqsave(&ha->hardware_lock, flags);
514 writel((0xFFFF << 16) | extHwConfig.Asuint32_t, isp_ext_hw_conf(ha));
515 readl(isp_ext_hw_conf(ha));
516 spin_unlock_irqrestore(&ha->hardware_lock, flags);
517
518 ql4xxx_unlock_nvram(ha);
519 ql4xxx_unlock_flash(ha);
520
521 return QLA_SUCCESS;
522 }
523
524 /**
525 * qla4_8xxx_pci_config() - Setup ISP82xx PCI configuration registers.
526 * @ha: HA context
527 */
528 void qla4_8xxx_pci_config(struct scsi_qla_host *ha)
529 {
530 pci_set_master(ha->pdev);
531 }
532
533 void qla4xxx_pci_config(struct scsi_qla_host *ha)
534 {
535 uint16_t w;
536 int status;
537
538 ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
539
540 pci_set_master(ha->pdev);
541 status = pci_set_mwi(ha->pdev);
542 /*
543 * We want to respect framework's setting of PCI configuration space
544 * command register and also want to make sure that all bits of
545 * interest to us are properly set in command register.
546 */
547 pci_read_config_word(ha->pdev, PCI_COMMAND, &w);
548 w |= PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
549 w &= ~PCI_COMMAND_INTX_DISABLE;
550 pci_write_config_word(ha->pdev, PCI_COMMAND, w);
551 }
552
553 static int qla4xxx_start_firmware_from_flash(struct scsi_qla_host *ha)
554 {
555 int status = QLA_ERROR;
556 unsigned long max_wait_time;
557 unsigned long flags;
558 uint32_t mbox_status;
559
560 ql4_printk(KERN_INFO, ha, "Starting firmware ...\n");
561
562 /*
563 * Start firmware from flash ROM
564 *
565 * WORKAROUND: Stuff a non-constant value that the firmware can
566 * use as a seed for a random number generator in MB7 prior to
567 * setting BOOT_ENABLE. Fixes problem where the TCP
568 * connections use the same TCP ports after each reboot,
569 * causing some connections to not get re-established.
570 */
571 DEBUG(printk("scsi%d: %s: Start firmware from flash ROM\n",
572 ha->host_no, __func__));
573
574 spin_lock_irqsave(&ha->hardware_lock, flags);
575 writel(jiffies, &ha->reg->mailbox[7]);
576 if (is_qla4022(ha) | is_qla4032(ha))
577 writel(set_rmask(NVR_WRITE_ENABLE),
578 &ha->reg->u1.isp4022.nvram);
579
580 writel(2, &ha->reg->mailbox[6]);
581 readl(&ha->reg->mailbox[6]);
582
583 writel(set_rmask(CSR_BOOT_ENABLE), &ha->reg->ctrl_status);
584 readl(&ha->reg->ctrl_status);
585 spin_unlock_irqrestore(&ha->hardware_lock, flags);
586
587 /* Wait for firmware to come UP. */
588 DEBUG2(printk(KERN_INFO "scsi%ld: %s: Wait up to %d seconds for "
589 "boot firmware to complete...\n",
590 ha->host_no, __func__, FIRMWARE_UP_TOV));
591 max_wait_time = jiffies + (FIRMWARE_UP_TOV * HZ);
592 do {
593 uint32_t ctrl_status;
594
595 spin_lock_irqsave(&ha->hardware_lock, flags);
596 ctrl_status = readw(&ha->reg->ctrl_status);
597 mbox_status = readw(&ha->reg->mailbox[0]);
598 spin_unlock_irqrestore(&ha->hardware_lock, flags);
599
600 if (ctrl_status & set_rmask(CSR_SCSI_PROCESSOR_INTR))
601 break;
602 if (mbox_status == MBOX_STS_COMMAND_COMPLETE)
603 break;
604
605 DEBUG2(printk(KERN_INFO "scsi%ld: %s: Waiting for boot "
606 "firmware to complete... ctrl_sts=0x%x, remaining=%ld\n",
607 ha->host_no, __func__, ctrl_status, max_wait_time));
608
609 msleep_interruptible(250);
610 } while (!time_after_eq(jiffies, max_wait_time));
611
612 if (mbox_status == MBOX_STS_COMMAND_COMPLETE) {
613 DEBUG(printk(KERN_INFO "scsi%ld: %s: Firmware has started\n",
614 ha->host_no, __func__));
615
616 spin_lock_irqsave(&ha->hardware_lock, flags);
617 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
618 &ha->reg->ctrl_status);
619 readl(&ha->reg->ctrl_status);
620 spin_unlock_irqrestore(&ha->hardware_lock, flags);
621
622 status = QLA_SUCCESS;
623 } else {
624 printk(KERN_INFO "scsi%ld: %s: Boot firmware failed "
625 "- mbox status 0x%x\n", ha->host_no, __func__,
626 mbox_status);
627 status = QLA_ERROR;
628 }
629 return status;
630 }
631
632 int ql4xxx_lock_drvr_wait(struct scsi_qla_host *a)
633 {
634 #define QL4_LOCK_DRVR_WAIT 60
635 #define QL4_LOCK_DRVR_SLEEP 1
636
637 int drvr_wait = QL4_LOCK_DRVR_WAIT;
638 while (drvr_wait) {
639 if (ql4xxx_lock_drvr(a) == 0) {
640 ssleep(QL4_LOCK_DRVR_SLEEP);
641 if (drvr_wait) {
642 DEBUG2(printk("scsi%ld: %s: Waiting for "
643 "Global Init Semaphore(%d)...\n",
644 a->host_no,
645 __func__, drvr_wait));
646 }
647 drvr_wait -= QL4_LOCK_DRVR_SLEEP;
648 } else {
649 DEBUG2(printk("scsi%ld: %s: Global Init Semaphore "
650 "acquired\n", a->host_no, __func__));
651 return QLA_SUCCESS;
652 }
653 }
654 return QLA_ERROR;
655 }
656
657 /**
658 * qla4xxx_start_firmware - starts qla4xxx firmware
659 * @ha: Pointer to host adapter structure.
660 *
661 * This routine performs the necessary steps to start the firmware for
662 * the QLA4010 adapter.
663 **/
664 int qla4xxx_start_firmware(struct scsi_qla_host *ha)
665 {
666 unsigned long flags = 0;
667 uint32_t mbox_status;
668 int status = QLA_ERROR;
669 int soft_reset = 1;
670 int config_chip = 0;
671
672 if (is_qla4022(ha) | is_qla4032(ha))
673 ql4xxx_set_mac_number(ha);
674
675 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
676 return QLA_ERROR;
677
678 spin_lock_irqsave(&ha->hardware_lock, flags);
679
680 DEBUG2(printk("scsi%ld: %s: port_ctrl = 0x%08X\n", ha->host_no,
681 __func__, readw(isp_port_ctrl(ha))));
682 DEBUG(printk("scsi%ld: %s: port_status = 0x%08X\n", ha->host_no,
683 __func__, readw(isp_port_status(ha))));
684
685 /* Is Hardware already initialized? */
686 if ((readw(isp_port_ctrl(ha)) & 0x8000) != 0) {
687 DEBUG(printk("scsi%ld: %s: Hardware has already been "
688 "initialized\n", ha->host_no, __func__));
689
690 /* Receive firmware boot acknowledgement */
691 mbox_status = readw(&ha->reg->mailbox[0]);
692
693 DEBUG2(printk("scsi%ld: %s: H/W Config complete - mbox[0]= "
694 "0x%x\n", ha->host_no, __func__, mbox_status));
695
696 /* Is firmware already booted? */
697 if (mbox_status == 0) {
698 /* F/W not running, must be config by net driver */
699 config_chip = 1;
700 soft_reset = 0;
701 } else {
702 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
703 &ha->reg->ctrl_status);
704 readl(&ha->reg->ctrl_status);
705 writel(set_rmask(CSR_SCSI_COMPLETION_INTR),
706 &ha->reg->ctrl_status);
707 readl(&ha->reg->ctrl_status);
708 spin_unlock_irqrestore(&ha->hardware_lock, flags);
709 if (qla4xxx_get_firmware_state(ha) == QLA_SUCCESS) {
710 DEBUG2(printk("scsi%ld: %s: Get firmware "
711 "state -- state = 0x%x\n",
712 ha->host_no,
713 __func__, ha->firmware_state));
714 /* F/W is running */
715 if (ha->firmware_state &
716 FW_STATE_CONFIG_WAIT) {
717 DEBUG2(printk("scsi%ld: %s: Firmware "
718 "in known state -- "
719 "config and "
720 "boot, state = 0x%x\n",
721 ha->host_no, __func__,
722 ha->firmware_state));
723 config_chip = 1;
724 soft_reset = 0;
725 }
726 } else {
727 DEBUG2(printk("scsi%ld: %s: Firmware in "
728 "unknown state -- resetting,"
729 " state = "
730 "0x%x\n", ha->host_no, __func__,
731 ha->firmware_state));
732 }
733 spin_lock_irqsave(&ha->hardware_lock, flags);
734 }
735 } else {
736 DEBUG(printk("scsi%ld: %s: H/W initialization hasn't been "
737 "started - resetting\n", ha->host_no, __func__));
738 }
739 spin_unlock_irqrestore(&ha->hardware_lock, flags);
740
741 DEBUG(printk("scsi%ld: %s: Flags soft_rest=%d, config= %d\n ",
742 ha->host_no, __func__, soft_reset, config_chip));
743 if (soft_reset) {
744 DEBUG(printk("scsi%ld: %s: Issue Soft Reset\n", ha->host_no,
745 __func__));
746 status = qla4xxx_soft_reset(ha); /* NOTE: acquires drvr
747 * lock again, but ok */
748 if (status == QLA_ERROR) {
749 DEBUG(printk("scsi%d: %s: Soft Reset failed!\n",
750 ha->host_no, __func__));
751 ql4xxx_unlock_drvr(ha);
752 return QLA_ERROR;
753 }
754 config_chip = 1;
755
756 /* Reset clears the semaphore, so acquire again */
757 if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
758 return QLA_ERROR;
759 }
760
761 if (config_chip) {
762 if ((status = qla4xxx_config_nvram(ha)) == QLA_SUCCESS)
763 status = qla4xxx_start_firmware_from_flash(ha);
764 }
765
766 ql4xxx_unlock_drvr(ha);
767 if (status == QLA_SUCCESS) {
768 if (test_and_clear_bit(AF_GET_CRASH_RECORD, &ha->flags))
769 qla4xxx_get_crash_record(ha);
770 } else {
771 DEBUG(printk("scsi%ld: %s: Firmware has NOT started\n",
772 ha->host_no, __func__));
773 }
774 return status;
775 }
776 /**
777 * qla4xxx_free_ddb_index - Free DDBs reserved by firmware
778 * @ha: pointer to adapter structure
779 *
780 * Since firmware is not running in autoconnect mode the DDB indices should
781 * be freed so that when login happens from user space there are free DDB
782 * indices available.
783 **/
784 void qla4xxx_free_ddb_index(struct scsi_qla_host *ha)
785 {
786 int max_ddbs;
787 int ret;
788 uint32_t idx = 0, next_idx = 0;
789 uint32_t state = 0, conn_err = 0;
790
791 max_ddbs = is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
792 MAX_DEV_DB_ENTRIES;
793
794 for (idx = 0; idx < max_ddbs; idx = next_idx) {
795 ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
796 &next_idx, &state, &conn_err,
797 NULL, NULL);
798 if (ret == QLA_ERROR) {
799 next_idx++;
800 continue;
801 }
802 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
803 state == DDB_DS_SESSION_FAILED) {
804 DEBUG2(ql4_printk(KERN_INFO, ha,
805 "Freeing DDB index = 0x%x\n", idx));
806 ret = qla4xxx_clear_ddb_entry(ha, idx);
807 if (ret == QLA_ERROR)
808 ql4_printk(KERN_ERR, ha,
809 "Unable to clear DDB index = "
810 "0x%x\n", idx);
811 }
812 if (next_idx == 0)
813 break;
814 }
815 }
816
817 /**
818 * qla4xxx_initialize_adapter - initiailizes hba
819 * @ha: Pointer to host adapter structure.
820 *
821 * This routine parforms all of the steps necessary to initialize the adapter.
822 *
823 **/
824 int qla4xxx_initialize_adapter(struct scsi_qla_host *ha, int is_reset)
825 {
826 int status = QLA_ERROR;
827
828 ha->eeprom_cmd_data = 0;
829
830 ql4_printk(KERN_INFO, ha, "Configuring PCI space...\n");
831 ha->isp_ops->pci_config(ha);
832
833 ha->isp_ops->disable_intrs(ha);
834
835 /* Initialize the Host adapter request/response queues and firmware */
836 if (ha->isp_ops->start_firmware(ha) == QLA_ERROR)
837 goto exit_init_hba;
838
839 if (qla4xxx_about_firmware(ha) == QLA_ERROR)
840 goto exit_init_hba;
841
842 if (ha->isp_ops->get_sys_info(ha) == QLA_ERROR)
843 goto exit_init_hba;
844
845 if (qla4xxx_init_local_data(ha) == QLA_ERROR)
846 goto exit_init_hba;
847
848 status = qla4xxx_init_firmware(ha);
849 if (status == QLA_ERROR)
850 goto exit_init_hba;
851
852 if (is_reset == RESET_ADAPTER)
853 qla4xxx_build_ddb_list(ha, is_reset);
854
855 set_bit(AF_ONLINE, &ha->flags);
856 exit_init_hba:
857 if (is_qla8022(ha) && (status == QLA_ERROR)) {
858 /* Since interrupts are registered in start_firmware for
859 * 82xx, release them here if initialize_adapter fails */
860 qla4xxx_free_irqs(ha);
861 }
862
863 DEBUG2(printk("scsi%ld: initialize adapter: %s\n", ha->host_no,
864 status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
865 return status;
866 }
867
868 int qla4xxx_ddb_change(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
869 struct ddb_entry *ddb_entry, uint32_t state)
870 {
871 uint32_t old_fw_ddb_device_state;
872 int status = QLA_ERROR;
873
874 old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
875 DEBUG2(ql4_printk(KERN_INFO, ha,
876 "%s: DDB - old state = 0x%x, new state = 0x%x for "
877 "index [%d]\n", __func__,
878 ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
879
880 ddb_entry->fw_ddb_device_state = state;
881
882 switch (old_fw_ddb_device_state) {
883 case DDB_DS_LOGIN_IN_PROCESS:
884 switch (state) {
885 case DDB_DS_SESSION_ACTIVE:
886 case DDB_DS_DISCOVERY:
887 ddb_entry->unblock_sess(ddb_entry->sess);
888 qla4xxx_update_session_conn_param(ha, ddb_entry);
889 status = QLA_SUCCESS;
890 break;
891 case DDB_DS_SESSION_FAILED:
892 case DDB_DS_NO_CONNECTION_ACTIVE:
893 iscsi_conn_login_event(ddb_entry->conn,
894 ISCSI_CONN_STATE_FREE);
895 status = QLA_SUCCESS;
896 break;
897 }
898 break;
899 case DDB_DS_SESSION_ACTIVE:
900 switch (state) {
901 case DDB_DS_SESSION_FAILED:
902 /*
903 * iscsi_session failure will cause userspace to
904 * stop the connection which in turn would block the
905 * iscsi_session and start relogin
906 */
907 iscsi_session_failure(ddb_entry->sess->dd_data,
908 ISCSI_ERR_CONN_FAILED);
909 status = QLA_SUCCESS;
910 break;
911 case DDB_DS_NO_CONNECTION_ACTIVE:
912 clear_bit(fw_ddb_index, ha->ddb_idx_map);
913 status = QLA_SUCCESS;
914 break;
915 }
916 break;
917 case DDB_DS_SESSION_FAILED:
918 switch (state) {
919 case DDB_DS_SESSION_ACTIVE:
920 case DDB_DS_DISCOVERY:
921 ddb_entry->unblock_sess(ddb_entry->sess);
922 qla4xxx_update_session_conn_param(ha, ddb_entry);
923 status = QLA_SUCCESS;
924 break;
925 case DDB_DS_SESSION_FAILED:
926 iscsi_session_failure(ddb_entry->sess->dd_data,
927 ISCSI_ERR_CONN_FAILED);
928 status = QLA_SUCCESS;
929 break;
930 }
931 break;
932 default:
933 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unknown Event\n",
934 __func__));
935 break;
936 }
937 return status;
938 }
939
940 void qla4xxx_arm_relogin_timer(struct ddb_entry *ddb_entry)
941 {
942 /*
943 * This triggers a relogin. After the relogin_timer
944 * expires, the relogin gets scheduled. We must wait a
945 * minimum amount of time since receiving an 0x8014 AEN
946 * with failed device_state or a logout response before
947 * we can issue another relogin.
948 *
949 * Firmware pads this timeout: (time2wait +1).
950 * Driver retry to login should be longer than F/W.
951 * Otherwise F/W will fail
952 * set_ddb() mbx cmd with 0x4005 since it still
953 * counting down its time2wait.
954 */
955 atomic_set(&ddb_entry->relogin_timer, 0);
956 atomic_set(&ddb_entry->retry_relogin_timer,
957 ddb_entry->default_time2wait + 4);
958
959 }
960
961 int qla4xxx_flash_ddb_change(struct scsi_qla_host *ha, uint32_t fw_ddb_index,
962 struct ddb_entry *ddb_entry, uint32_t state)
963 {
964 uint32_t old_fw_ddb_device_state;
965 int status = QLA_ERROR;
966
967 old_fw_ddb_device_state = ddb_entry->fw_ddb_device_state;
968 DEBUG2(ql4_printk(KERN_INFO, ha,
969 "%s: DDB - old state = 0x%x, new state = 0x%x for "
970 "index [%d]\n", __func__,
971 ddb_entry->fw_ddb_device_state, state, fw_ddb_index));
972
973 ddb_entry->fw_ddb_device_state = state;
974
975 switch (old_fw_ddb_device_state) {
976 case DDB_DS_LOGIN_IN_PROCESS:
977 case DDB_DS_NO_CONNECTION_ACTIVE:
978 switch (state) {
979 case DDB_DS_SESSION_ACTIVE:
980 ddb_entry->unblock_sess(ddb_entry->sess);
981 qla4xxx_update_session_conn_fwddb_param(ha, ddb_entry);
982 status = QLA_SUCCESS;
983 break;
984 case DDB_DS_SESSION_FAILED:
985 iscsi_block_session(ddb_entry->sess);
986 if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
987 qla4xxx_arm_relogin_timer(ddb_entry);
988 status = QLA_SUCCESS;
989 break;
990 }
991 break;
992 case DDB_DS_SESSION_ACTIVE:
993 switch (state) {
994 case DDB_DS_SESSION_FAILED:
995 iscsi_block_session(ddb_entry->sess);
996 if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
997 qla4xxx_arm_relogin_timer(ddb_entry);
998 status = QLA_SUCCESS;
999 break;
1000 }
1001 break;
1002 case DDB_DS_SESSION_FAILED:
1003 switch (state) {
1004 case DDB_DS_SESSION_ACTIVE:
1005 ddb_entry->unblock_sess(ddb_entry->sess);
1006 qla4xxx_update_session_conn_fwddb_param(ha, ddb_entry);
1007 status = QLA_SUCCESS;
1008 break;
1009 case DDB_DS_SESSION_FAILED:
1010 if (!test_bit(DF_RELOGIN, &ddb_entry->flags))
1011 qla4xxx_arm_relogin_timer(ddb_entry);
1012 status = QLA_SUCCESS;
1013 break;
1014 }
1015 break;
1016 default:
1017 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Unknown Event\n",
1018 __func__));
1019 break;
1020 }
1021 return status;
1022 }
1023
1024 /**
1025 * qla4xxx_process_ddb_changed - process ddb state change
1026 * @ha - Pointer to host adapter structure.
1027 * @fw_ddb_index - Firmware's device database index
1028 * @state - Device state
1029 *
1030 * This routine processes a Decive Database Changed AEN Event.
1031 **/
1032 int qla4xxx_process_ddb_changed(struct scsi_qla_host *ha,
1033 uint32_t fw_ddb_index,
1034 uint32_t state, uint32_t conn_err)
1035 {
1036 struct ddb_entry *ddb_entry;
1037 int status = QLA_ERROR;
1038
1039 /* check for out of range index */
1040 if (fw_ddb_index >= MAX_DDB_ENTRIES)
1041 goto exit_ddb_event;
1042
1043 /* Get the corresponging ddb entry */
1044 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, fw_ddb_index);
1045 /* Device does not currently exist in our database. */
1046 if (ddb_entry == NULL) {
1047 ql4_printk(KERN_ERR, ha, "%s: No ddb_entry at FW index [%d]\n",
1048 __func__, fw_ddb_index);
1049
1050 if (state == DDB_DS_NO_CONNECTION_ACTIVE)
1051 clear_bit(fw_ddb_index, ha->ddb_idx_map);
1052
1053 goto exit_ddb_event;
1054 }
1055
1056 ddb_entry->ddb_change(ha, fw_ddb_index, ddb_entry, state);
1057
1058 exit_ddb_event:
1059 return status;
1060 }
1061
1062 /**
1063 * qla4xxx_login_flash_ddb - Login to target (DDB)
1064 * @cls_session: Pointer to the session to login
1065 *
1066 * This routine logins to the target.
1067 * Issues setddb and conn open mbx
1068 **/
1069 void qla4xxx_login_flash_ddb(struct iscsi_cls_session *cls_session)
1070 {
1071 struct iscsi_session *sess;
1072 struct ddb_entry *ddb_entry;
1073 struct scsi_qla_host *ha;
1074 struct dev_db_entry *fw_ddb_entry = NULL;
1075 dma_addr_t fw_ddb_dma;
1076 uint32_t mbx_sts = 0;
1077 int ret;
1078
1079 sess = cls_session->dd_data;
1080 ddb_entry = sess->dd_data;
1081 ha = ddb_entry->ha;
1082
1083 if (!test_bit(AF_LINK_UP, &ha->flags))
1084 return;
1085
1086 if (ddb_entry->ddb_type != FLASH_DDB) {
1087 DEBUG2(ql4_printk(KERN_INFO, ha,
1088 "Skipping login to non FLASH DB"));
1089 goto exit_login;
1090 }
1091
1092 fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
1093 &fw_ddb_dma);
1094 if (fw_ddb_entry == NULL) {
1095 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
1096 goto exit_login;
1097 }
1098
1099 if (ddb_entry->fw_ddb_index == INVALID_ENTRY) {
1100 ret = qla4xxx_get_ddb_index(ha, &ddb_entry->fw_ddb_index);
1101 if (ret == QLA_ERROR)
1102 goto exit_login;
1103
1104 ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
1105 ha->tot_ddbs++;
1106 }
1107
1108 memcpy(fw_ddb_entry, &ddb_entry->fw_ddb_entry,
1109 sizeof(struct dev_db_entry));
1110 ddb_entry->sess->target_id = ddb_entry->fw_ddb_index;
1111
1112 ret = qla4xxx_set_ddb_entry(ha, ddb_entry->fw_ddb_index,
1113 fw_ddb_dma, &mbx_sts);
1114 if (ret == QLA_ERROR) {
1115 DEBUG2(ql4_printk(KERN_ERR, ha, "Set DDB failed\n"));
1116 goto exit_login;
1117 }
1118
1119 ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
1120 ret = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
1121 if (ret == QLA_ERROR) {
1122 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
1123 sess->targetname);
1124 goto exit_login;
1125 }
1126
1127 exit_login:
1128 if (fw_ddb_entry)
1129 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
1130 }
1131
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