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power: reset: corrections for simple syscon reboot driver
[linux-2.6/btrfs-unstable.git] / drivers / scsi / qla4xxx / ql4_83xx.c
blob556c1525f881650261187b01e60165a36ce81c00
1 /*
2 * QLogic iSCSI HBA Driver
3 * Copyright (c) 2003-2013 QLogic Corporation
4 *
5 * See LICENSE.qla4xxx for copyright and licensing details.
6 */
7
8 #include <linux/ratelimit.h>
9
10 #include "ql4_def.h"
11 #include "ql4_version.h"
12 #include "ql4_glbl.h"
13 #include "ql4_dbg.h"
14 #include "ql4_inline.h"
15
16 uint32_t qla4_83xx_rd_reg(struct scsi_qla_host *ha, ulong addr)
17 {
18 return readl((void __iomem *)(ha->nx_pcibase + addr));
19 }
20
21 void qla4_83xx_wr_reg(struct scsi_qla_host *ha, ulong addr, uint32_t val)
22 {
23 writel(val, (void __iomem *)(ha->nx_pcibase + addr));
24 }
25
26 static int qla4_83xx_set_win_base(struct scsi_qla_host *ha, uint32_t addr)
27 {
28 uint32_t val;
29 int ret_val = QLA_SUCCESS;
30
31 qla4_83xx_wr_reg(ha, QLA83XX_CRB_WIN_FUNC(ha->func_num), addr);
32 val = qla4_83xx_rd_reg(ha, QLA83XX_CRB_WIN_FUNC(ha->func_num));
33 if (val != addr) {
34 ql4_printk(KERN_ERR, ha, "%s: Failed to set register window : addr written 0x%x, read 0x%x!\n",
35 __func__, addr, val);
36 ret_val = QLA_ERROR;
37 }
38
39 return ret_val;
40 }
41
42 int qla4_83xx_rd_reg_indirect(struct scsi_qla_host *ha, uint32_t addr,
43 uint32_t *data)
44 {
45 int ret_val;
46
47 ret_val = qla4_83xx_set_win_base(ha, addr);
48
49 if (ret_val == QLA_SUCCESS)
50 *data = qla4_83xx_rd_reg(ha, QLA83XX_WILDCARD);
51 else
52 ql4_printk(KERN_ERR, ha, "%s: failed read of addr 0x%x!\n",
53 __func__, addr);
54
55 return ret_val;
56 }
57
58 int qla4_83xx_wr_reg_indirect(struct scsi_qla_host *ha, uint32_t addr,
59 uint32_t data)
60 {
61 int ret_val;
62
63 ret_val = qla4_83xx_set_win_base(ha, addr);
64
65 if (ret_val == QLA_SUCCESS)
66 qla4_83xx_wr_reg(ha, QLA83XX_WILDCARD, data);
67 else
68 ql4_printk(KERN_ERR, ha, "%s: failed wrt to addr 0x%x, data 0x%x\n",
69 __func__, addr, data);
70
71 return ret_val;
72 }
73
74 static int qla4_83xx_flash_lock(struct scsi_qla_host *ha)
75 {
76 int lock_owner;
77 int timeout = 0;
78 uint32_t lock_status = 0;
79 int ret_val = QLA_SUCCESS;
80
81 while (lock_status == 0) {
82 lock_status = qla4_83xx_rd_reg(ha, QLA83XX_FLASH_LOCK);
83 if (lock_status)
84 break;
85
86 if (++timeout >= QLA83XX_FLASH_LOCK_TIMEOUT / 20) {
87 lock_owner = qla4_83xx_rd_reg(ha,
88 QLA83XX_FLASH_LOCK_ID);
89 ql4_printk(KERN_ERR, ha, "%s: flash lock by func %d failed, held by func %d\n",
90 __func__, ha->func_num, lock_owner);
91 ret_val = QLA_ERROR;
92 break;
93 }
94 msleep(20);
95 }
96
97 qla4_83xx_wr_reg(ha, QLA83XX_FLASH_LOCK_ID, ha->func_num);
98 return ret_val;
99 }
100
101 static void qla4_83xx_flash_unlock(struct scsi_qla_host *ha)
102 {
103 /* Reading FLASH_UNLOCK register unlocks the Flash */
104 qla4_83xx_wr_reg(ha, QLA83XX_FLASH_LOCK_ID, 0xFF);
105 qla4_83xx_rd_reg(ha, QLA83XX_FLASH_UNLOCK);
106 }
107
108 int qla4_83xx_flash_read_u32(struct scsi_qla_host *ha, uint32_t flash_addr,
109 uint8_t *p_data, int u32_word_count)
110 {
111 int i;
112 uint32_t u32_word;
113 uint32_t addr = flash_addr;
114 int ret_val = QLA_SUCCESS;
115
116 ret_val = qla4_83xx_flash_lock(ha);
117 if (ret_val == QLA_ERROR)
118 goto exit_lock_error;
119
120 if (addr & 0x03) {
121 ql4_printk(KERN_ERR, ha, "%s: Illegal addr = 0x%x\n",
122 __func__, addr);
123 ret_val = QLA_ERROR;
124 goto exit_flash_read;
125 }
126
127 for (i = 0; i < u32_word_count; i++) {
128 ret_val = qla4_83xx_wr_reg_indirect(ha,
129 QLA83XX_FLASH_DIRECT_WINDOW,
130 (addr & 0xFFFF0000));
131 if (ret_val == QLA_ERROR) {
132 ql4_printk(KERN_ERR, ha, "%s: failed to write addr 0x%x to FLASH_DIRECT_WINDOW\n!",
133 __func__, addr);
134 goto exit_flash_read;
135 }
136
137 ret_val = qla4_83xx_rd_reg_indirect(ha,
138 QLA83XX_FLASH_DIRECT_DATA(addr),
139 &u32_word);
140 if (ret_val == QLA_ERROR) {
141 ql4_printk(KERN_ERR, ha, "%s: failed to read addr 0x%x!\n",
142 __func__, addr);
143 goto exit_flash_read;
144 }
145
146 *(__le32 *)p_data = le32_to_cpu(u32_word);
147 p_data = p_data + 4;
148 addr = addr + 4;
149 }
150
151 exit_flash_read:
152 qla4_83xx_flash_unlock(ha);
153
154 exit_lock_error:
155 return ret_val;
156 }
157
158 int qla4_83xx_lockless_flash_read_u32(struct scsi_qla_host *ha,
159 uint32_t flash_addr, uint8_t *p_data,
160 int u32_word_count)
161 {
162 uint32_t i;
163 uint32_t u32_word;
164 uint32_t flash_offset;
165 uint32_t addr = flash_addr;
166 int ret_val = QLA_SUCCESS;
167
168 flash_offset = addr & (QLA83XX_FLASH_SECTOR_SIZE - 1);
169
170 if (addr & 0x3) {
171 ql4_printk(KERN_ERR, ha, "%s: Illegal addr = 0x%x\n",
172 __func__, addr);
173 ret_val = QLA_ERROR;
174 goto exit_lockless_read;
175 }
176
177 ret_val = qla4_83xx_wr_reg_indirect(ha, QLA83XX_FLASH_DIRECT_WINDOW,
178 addr);
179 if (ret_val == QLA_ERROR) {
180 ql4_printk(KERN_ERR, ha, "%s: failed to write addr 0x%x to FLASH_DIRECT_WINDOW!\n",
181 __func__, addr);
182 goto exit_lockless_read;
183 }
184
185 /* Check if data is spread across multiple sectors */
186 if ((flash_offset + (u32_word_count * sizeof(uint32_t))) >
187 (QLA83XX_FLASH_SECTOR_SIZE - 1)) {
188
189 /* Multi sector read */
190 for (i = 0; i < u32_word_count; i++) {
191 ret_val = qla4_83xx_rd_reg_indirect(ha,
192 QLA83XX_FLASH_DIRECT_DATA(addr),
193 &u32_word);
194 if (ret_val == QLA_ERROR) {
195 ql4_printk(KERN_ERR, ha, "%s: failed to read addr 0x%x!\n",
196 __func__, addr);
197 goto exit_lockless_read;
198 }
199
200 *(__le32 *)p_data = le32_to_cpu(u32_word);
201 p_data = p_data + 4;
202 addr = addr + 4;
203 flash_offset = flash_offset + 4;
204
205 if (flash_offset > (QLA83XX_FLASH_SECTOR_SIZE - 1)) {
206 /* This write is needed once for each sector */
207 ret_val = qla4_83xx_wr_reg_indirect(ha,
208 QLA83XX_FLASH_DIRECT_WINDOW,
209 addr);
210 if (ret_val == QLA_ERROR) {
211 ql4_printk(KERN_ERR, ha, "%s: failed to write addr 0x%x to FLASH_DIRECT_WINDOW!\n",
212 __func__, addr);
213 goto exit_lockless_read;
214 }
215 flash_offset = 0;
216 }
217 }
218 } else {
219 /* Single sector read */
220 for (i = 0; i < u32_word_count; i++) {
221 ret_val = qla4_83xx_rd_reg_indirect(ha,
222 QLA83XX_FLASH_DIRECT_DATA(addr),
223 &u32_word);
224 if (ret_val == QLA_ERROR) {
225 ql4_printk(KERN_ERR, ha, "%s: failed to read addr 0x%x!\n",
226 __func__, addr);
227 goto exit_lockless_read;
228 }
229
230 *(__le32 *)p_data = le32_to_cpu(u32_word);
231 p_data = p_data + 4;
232 addr = addr + 4;
233 }
234 }
235
236 exit_lockless_read:
237 return ret_val;
238 }
239
240 void qla4_83xx_rom_lock_recovery(struct scsi_qla_host *ha)
241 {
242 if (qla4_83xx_flash_lock(ha))
243 ql4_printk(KERN_INFO, ha, "%s: Resetting rom lock\n", __func__);
244
245 /*
246 * We got the lock, or someone else is holding the lock
247 * since we are restting, forcefully unlock
248 */
249 qla4_83xx_flash_unlock(ha);
250 }
251
252 #define INTENT_TO_RECOVER 0x01
253 #define PROCEED_TO_RECOVER 0x02
254
255 static int qla4_83xx_lock_recovery(struct scsi_qla_host *ha)
256 {
257
258 uint32_t lock = 0, lockid;
259 int ret_val = QLA_ERROR;
260
261 lockid = ha->isp_ops->rd_reg_direct(ha, QLA83XX_DRV_LOCKRECOVERY);
262
263 /* Check for other Recovery in progress, go wait */
264 if ((lockid & 0x3) != 0)
265 goto exit_lock_recovery;
266
267 /* Intent to Recover */
268 ha->isp_ops->wr_reg_direct(ha, QLA83XX_DRV_LOCKRECOVERY,
269 (ha->func_num << 2) | INTENT_TO_RECOVER);
270
271 msleep(200);
272
273 /* Check Intent to Recover is advertised */
274 lockid = ha->isp_ops->rd_reg_direct(ha, QLA83XX_DRV_LOCKRECOVERY);
275 if ((lockid & 0x3C) != (ha->func_num << 2))
276 goto exit_lock_recovery;
277
278 ql4_printk(KERN_INFO, ha, "%s: IDC Lock recovery initiated for func %d\n",
279 __func__, ha->func_num);
280
281 /* Proceed to Recover */
282 ha->isp_ops->wr_reg_direct(ha, QLA83XX_DRV_LOCKRECOVERY,
283 (ha->func_num << 2) | PROCEED_TO_RECOVER);
284
285 /* Force Unlock */
286 ha->isp_ops->wr_reg_direct(ha, QLA83XX_DRV_LOCK_ID, 0xFF);
287 ha->isp_ops->rd_reg_direct(ha, QLA83XX_DRV_UNLOCK);
288
289 /* Clear bits 0-5 in IDC_RECOVERY register*/
290 ha->isp_ops->wr_reg_direct(ha, QLA83XX_DRV_LOCKRECOVERY, 0);
291
292 /* Get lock */
293 lock = ha->isp_ops->rd_reg_direct(ha, QLA83XX_DRV_LOCK);
294 if (lock) {
295 lockid = ha->isp_ops->rd_reg_direct(ha, QLA83XX_DRV_LOCK_ID);
296 lockid = ((lockid + (1 << 8)) & ~0xFF) | ha->func_num;
297 ha->isp_ops->wr_reg_direct(ha, QLA83XX_DRV_LOCK_ID, lockid);
298 ret_val = QLA_SUCCESS;
299 }
300
301 exit_lock_recovery:
302 return ret_val;
303 }
304
305 #define QLA83XX_DRV_LOCK_MSLEEP 200
306
307 int qla4_83xx_drv_lock(struct scsi_qla_host *ha)
308 {
309 int timeout = 0;
310 uint32_t status = 0;
311 int ret_val = QLA_SUCCESS;
312 uint32_t first_owner = 0;
313 uint32_t tmo_owner = 0;
314 uint32_t lock_id;
315 uint32_t func_num;
316 uint32_t lock_cnt;
317
318 while (status == 0) {
319 status = qla4_83xx_rd_reg(ha, QLA83XX_DRV_LOCK);
320 if (status) {
321 /* Increment Counter (8-31) and update func_num (0-7) on
322 * getting a successful lock */
323 lock_id = qla4_83xx_rd_reg(ha, QLA83XX_DRV_LOCK_ID);
324 lock_id = ((lock_id + (1 << 8)) & ~0xFF) | ha->func_num;
325 qla4_83xx_wr_reg(ha, QLA83XX_DRV_LOCK_ID, lock_id);
326 break;
327 }
328
329 if (timeout == 0)
330 /* Save counter + ID of function holding the lock for
331 * first failure */
332 first_owner = ha->isp_ops->rd_reg_direct(ha,
333 QLA83XX_DRV_LOCK_ID);
334
335 if (++timeout >=
336 (QLA83XX_DRV_LOCK_TIMEOUT / QLA83XX_DRV_LOCK_MSLEEP)) {
337 tmo_owner = qla4_83xx_rd_reg(ha, QLA83XX_DRV_LOCK_ID);
338 func_num = tmo_owner & 0xFF;
339 lock_cnt = tmo_owner >> 8;
340 ql4_printk(KERN_INFO, ha, "%s: Lock by func %d failed after 2s, lock held by func %d, lock count %d, first_owner %d\n",
341 __func__, ha->func_num, func_num, lock_cnt,
342 (first_owner & 0xFF));
343
344 if (first_owner != tmo_owner) {
345 /* Some other driver got lock, OR same driver
346 * got lock again (counter value changed), when
347 * we were waiting for lock.
348 * Retry for another 2 sec */
349 ql4_printk(KERN_INFO, ha, "%s: IDC lock failed for func %d\n",
350 __func__, ha->func_num);
351 timeout = 0;
352 } else {
353 /* Same driver holding lock > 2sec.
354 * Force Recovery */
355 ret_val = qla4_83xx_lock_recovery(ha);
356 if (ret_val == QLA_SUCCESS) {
357 /* Recovered and got lock */
358 ql4_printk(KERN_INFO, ha, "%s: IDC lock Recovery by %d successful\n",
359 __func__, ha->func_num);
360 break;
361 }
362 /* Recovery Failed, some other function
363 * has the lock, wait for 2secs and retry */
364 ql4_printk(KERN_INFO, ha, "%s: IDC lock Recovery by %d failed, Retrying timeout\n",
365 __func__, ha->func_num);
366 timeout = 0;
367 }
368 }
369 msleep(QLA83XX_DRV_LOCK_MSLEEP);
370 }
371
372 return ret_val;
373 }
374
375 void qla4_83xx_drv_unlock(struct scsi_qla_host *ha)
376 {
377 int id;
378
379 id = qla4_83xx_rd_reg(ha, QLA83XX_DRV_LOCK_ID);
380
381 if ((id & 0xFF) != ha->func_num) {
382 ql4_printk(KERN_ERR, ha, "%s: IDC Unlock by %d failed, lock owner is %d\n",
383 __func__, ha->func_num, (id & 0xFF));
384 return;
385 }
386
387 /* Keep lock counter value, update the ha->func_num to 0xFF */
388 qla4_83xx_wr_reg(ha, QLA83XX_DRV_LOCK_ID, (id | 0xFF));
389 qla4_83xx_rd_reg(ha, QLA83XX_DRV_UNLOCK);
390 }
391
392 void qla4_83xx_set_idc_dontreset(struct scsi_qla_host *ha)
393 {
394 uint32_t idc_ctrl;
395
396 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
397 idc_ctrl |= DONTRESET_BIT0;
398 qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL, idc_ctrl);
399 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: idc_ctrl = %d\n", __func__,
400 idc_ctrl));
401 }
402
403 void qla4_83xx_clear_idc_dontreset(struct scsi_qla_host *ha)
404 {
405 uint32_t idc_ctrl;
406
407 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
408 idc_ctrl &= ~DONTRESET_BIT0;
409 qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL, idc_ctrl);
410 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: idc_ctrl = %d\n", __func__,
411 idc_ctrl));
412 }
413
414 int qla4_83xx_idc_dontreset(struct scsi_qla_host *ha)
415 {
416 uint32_t idc_ctrl;
417
418 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
419 return idc_ctrl & DONTRESET_BIT0;
420 }
421
422 /*-------------------------IDC State Machine ---------------------*/
423
424 enum {
425 UNKNOWN_CLASS = 0,
426 NIC_CLASS,
427 FCOE_CLASS,
428 ISCSI_CLASS
429 };
430
431 struct device_info {
432 int func_num;
433 int device_type;
434 int port_num;
435 };
436
437 int qla4_83xx_can_perform_reset(struct scsi_qla_host *ha)
438 {
439 uint32_t drv_active;
440 uint32_t dev_part, dev_part1, dev_part2;
441 int i;
442 struct device_info device_map[16];
443 int func_nibble;
444 int nibble;
445 int nic_present = 0;
446 int iscsi_present = 0;
447 int iscsi_func_low = 0;
448
449 /* Use the dev_partition register to determine the PCI function number
450 * and then check drv_active register to see which driver is loaded */
451 dev_part1 = qla4_83xx_rd_reg(ha,
452 ha->reg_tbl[QLA8XXX_CRB_DEV_PART_INFO]);
453 dev_part2 = qla4_83xx_rd_reg(ha, QLA83XX_CRB_DEV_PART_INFO2);
454 drv_active = qla4_83xx_rd_reg(ha, ha->reg_tbl[QLA8XXX_CRB_DRV_ACTIVE]);
455
456 /* Each function has 4 bits in dev_partition Info register,
457 * Lower 2 bits - device type, Upper 2 bits - physical port number */
458 dev_part = dev_part1;
459 for (i = nibble = 0; i <= 15; i++, nibble++) {
460 func_nibble = dev_part & (0xF << (nibble * 4));
461 func_nibble >>= (nibble * 4);
462 device_map[i].func_num = i;
463 device_map[i].device_type = func_nibble & 0x3;
464 device_map[i].port_num = func_nibble & 0xC;
465
466 if (device_map[i].device_type == NIC_CLASS) {
467 if (drv_active & (1 << device_map[i].func_num)) {
468 nic_present++;
469 break;
470 }
471 } else if (device_map[i].device_type == ISCSI_CLASS) {
472 if (drv_active & (1 << device_map[i].func_num)) {
473 if (!iscsi_present ||
474 (iscsi_present &&
475 (iscsi_func_low > device_map[i].func_num)))
476 iscsi_func_low = device_map[i].func_num;
477
478 iscsi_present++;
479 }
480 }
481
482 /* For function_num[8..15] get info from dev_part2 register */
483 if (nibble == 7) {
484 nibble = 0;
485 dev_part = dev_part2;
486 }
487 }
488
489 /* NIC, iSCSI and FCOE are the Reset owners based on order, NIC gets
490 * precedence over iSCSI and FCOE and iSCSI over FCOE, based on drivers
491 * present. */
492 if (!nic_present && (ha->func_num == iscsi_func_low)) {
493 DEBUG2(ql4_printk(KERN_INFO, ha,
494 "%s: can reset - NIC not present and lower iSCSI function is %d\n",
495 __func__, ha->func_num));
496 return 1;
497 }
498
499 return 0;
500 }
501
502 /**
503 * qla4_83xx_need_reset_handler - Code to start reset sequence
504 * @ha: pointer to adapter structure
505 *
506 * Note: IDC lock must be held upon entry
507 **/
508 void qla4_83xx_need_reset_handler(struct scsi_qla_host *ha)
509 {
510 uint32_t dev_state, drv_state, drv_active;
511 unsigned long reset_timeout, dev_init_timeout;
512
513 ql4_printk(KERN_INFO, ha, "%s: Performing ISP error recovery\n",
514 __func__);
515
516 if (!test_bit(AF_8XXX_RST_OWNER, &ha->flags)) {
517 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: reset acknowledged\n",
518 __func__));
519 qla4_8xxx_set_rst_ready(ha);
520
521 /* Non-reset owners ACK Reset and wait for device INIT state
522 * as part of Reset Recovery by Reset Owner */
523 dev_init_timeout = jiffies + (ha->nx_dev_init_timeout * HZ);
524
525 do {
526 if (time_after_eq(jiffies, dev_init_timeout)) {
527 ql4_printk(KERN_INFO, ha, "%s: Non Reset owner dev init timeout\n",
528 __func__);
529 break;
530 }
531
532 ha->isp_ops->idc_unlock(ha);
533 msleep(1000);
534 ha->isp_ops->idc_lock(ha);
535
536 dev_state = qla4_8xxx_rd_direct(ha,
537 QLA8XXX_CRB_DEV_STATE);
538 } while (dev_state == QLA8XXX_DEV_NEED_RESET);
539 } else {
540 qla4_8xxx_set_rst_ready(ha);
541 reset_timeout = jiffies + (ha->nx_reset_timeout * HZ);
542 drv_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DRV_STATE);
543 drv_active = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DRV_ACTIVE);
544
545 ql4_printk(KERN_INFO, ha, "%s: drv_state = 0x%x, drv_active = 0x%x\n",
546 __func__, drv_state, drv_active);
547
548 while (drv_state != drv_active) {
549 if (time_after_eq(jiffies, reset_timeout)) {
550 ql4_printk(KERN_INFO, ha, "%s: %s: RESET TIMEOUT! drv_state: 0x%08x, drv_active: 0x%08x\n",
551 __func__, DRIVER_NAME, drv_state,
552 drv_active);
553 break;
554 }
555
556 ha->isp_ops->idc_unlock(ha);
557 msleep(1000);
558 ha->isp_ops->idc_lock(ha);
559
560 drv_state = qla4_8xxx_rd_direct(ha,
561 QLA8XXX_CRB_DRV_STATE);
562 drv_active = qla4_8xxx_rd_direct(ha,
563 QLA8XXX_CRB_DRV_ACTIVE);
564 }
565
566 if (drv_state != drv_active) {
567 ql4_printk(KERN_INFO, ha, "%s: Reset_owner turning off drv_active of non-acking function 0x%x\n",
568 __func__, (drv_active ^ drv_state));
569 drv_active = drv_active & drv_state;
570 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_ACTIVE,
571 drv_active);
572 }
573
574 clear_bit(AF_8XXX_RST_OWNER, &ha->flags);
575 /* Start Reset Recovery */
576 qla4_8xxx_device_bootstrap(ha);
577 }
578 }
579
580 void qla4_83xx_get_idc_param(struct scsi_qla_host *ha)
581 {
582 uint32_t idc_params, ret_val;
583
584 ret_val = qla4_83xx_flash_read_u32(ha, QLA83XX_IDC_PARAM_ADDR,
585 (uint8_t *)&idc_params, 1);
586 if (ret_val == QLA_SUCCESS) {
587 ha->nx_dev_init_timeout = idc_params & 0xFFFF;
588 ha->nx_reset_timeout = (idc_params >> 16) & 0xFFFF;
589 } else {
590 ha->nx_dev_init_timeout = ROM_DEV_INIT_TIMEOUT;
591 ha->nx_reset_timeout = ROM_DRV_RESET_ACK_TIMEOUT;
592 }
593
594 DEBUG2(ql4_printk(KERN_DEBUG, ha,
595 "%s: ha->nx_dev_init_timeout = %d, ha->nx_reset_timeout = %d\n",
596 __func__, ha->nx_dev_init_timeout,
597 ha->nx_reset_timeout));
598 }
599
600 /*-------------------------Reset Sequence Functions-----------------------*/
601
602 static void qla4_83xx_dump_reset_seq_hdr(struct scsi_qla_host *ha)
603 {
604 uint8_t *phdr;
605
606 if (!ha->reset_tmplt.buff) {
607 ql4_printk(KERN_ERR, ha, "%s: Error: Invalid reset_seq_template\n",
608 __func__);
609 return;
610 }
611
612 phdr = ha->reset_tmplt.buff;
613
614 DEBUG2(ql4_printk(KERN_INFO, ha,
615 "Reset Template: 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X 0x%X\n",
616 *phdr, *(phdr+1), *(phdr+2), *(phdr+3), *(phdr+4),
617 *(phdr+5), *(phdr+6), *(phdr+7), *(phdr + 8),
618 *(phdr+9), *(phdr+10), *(phdr+11), *(phdr+12),
619 *(phdr+13), *(phdr+14), *(phdr+15)));
620 }
621
622 static int qla4_83xx_copy_bootloader(struct scsi_qla_host *ha)
623 {
624 uint8_t *p_cache;
625 uint32_t src, count, size;
626 uint64_t dest;
627 int ret_val = QLA_SUCCESS;
628
629 src = QLA83XX_BOOTLOADER_FLASH_ADDR;
630 dest = qla4_83xx_rd_reg(ha, QLA83XX_BOOTLOADER_ADDR);
631 size = qla4_83xx_rd_reg(ha, QLA83XX_BOOTLOADER_SIZE);
632
633 /* 128 bit alignment check */
634 if (size & 0xF)
635 size = (size + 16) & ~0xF;
636
637 /* 16 byte count */
638 count = size/16;
639
640 p_cache = vmalloc(size);
641 if (p_cache == NULL) {
642 ql4_printk(KERN_ERR, ha, "%s: Failed to allocate memory for boot loader cache\n",
643 __func__);
644 ret_val = QLA_ERROR;
645 goto exit_copy_bootloader;
646 }
647
648 ret_val = qla4_83xx_lockless_flash_read_u32(ha, src, p_cache,
649 size / sizeof(uint32_t));
650 if (ret_val == QLA_ERROR) {
651 ql4_printk(KERN_ERR, ha, "%s: Error reading firmware from flash\n",
652 __func__);
653 goto exit_copy_error;
654 }
655 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Read firmware from flash\n",
656 __func__));
657
658 /* 128 bit/16 byte write to MS memory */
659 ret_val = qla4_8xxx_ms_mem_write_128b(ha, dest, (uint32_t *)p_cache,
660 count);
661 if (ret_val == QLA_ERROR) {
662 ql4_printk(KERN_ERR, ha, "%s: Error writing firmware to MS\n",
663 __func__);
664 goto exit_copy_error;
665 }
666
667 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Wrote firmware size %d to MS\n",
668 __func__, size));
669
670 exit_copy_error:
671 vfree(p_cache);
672
673 exit_copy_bootloader:
674 return ret_val;
675 }
676
677 static int qla4_83xx_check_cmd_peg_status(struct scsi_qla_host *ha)
678 {
679 uint32_t val, ret_val = QLA_ERROR;
680 int retries = CRB_CMDPEG_CHECK_RETRY_COUNT;
681
682 do {
683 val = qla4_83xx_rd_reg(ha, QLA83XX_CMDPEG_STATE);
684 if (val == PHAN_INITIALIZE_COMPLETE) {
685 DEBUG2(ql4_printk(KERN_INFO, ha,
686 "%s: Command Peg initialization complete. State=0x%x\n",
687 __func__, val));
688 ret_val = QLA_SUCCESS;
689 break;
690 }
691 msleep(CRB_CMDPEG_CHECK_DELAY);
692 } while (--retries);
693
694 return ret_val;
695 }
696
697 /**
698 * qla4_83xx_poll_reg - Poll the given CRB addr for duration msecs till
699 * value read ANDed with test_mask is equal to test_result.
700 *
701 * @ha : Pointer to adapter structure
702 * @addr : CRB register address
703 * @duration : Poll for total of "duration" msecs
704 * @test_mask : Mask value read with "test_mask"
705 * @test_result : Compare (value&test_mask) with test_result.
706 **/
707 static int qla4_83xx_poll_reg(struct scsi_qla_host *ha, uint32_t addr,
708 int duration, uint32_t test_mask,
709 uint32_t test_result)
710 {
711 uint32_t value;
712 uint8_t retries;
713 int ret_val = QLA_SUCCESS;
714
715 ret_val = qla4_83xx_rd_reg_indirect(ha, addr, &value);
716 if (ret_val == QLA_ERROR)
717 goto exit_poll_reg;
718
719 retries = duration / 10;
720 do {
721 if ((value & test_mask) != test_result) {
722 msleep(duration / 10);
723 ret_val = qla4_83xx_rd_reg_indirect(ha, addr, &value);
724 if (ret_val == QLA_ERROR)
725 goto exit_poll_reg;
726
727 ret_val = QLA_ERROR;
728 } else {
729 ret_val = QLA_SUCCESS;
730 break;
731 }
732 } while (retries--);
733
734 exit_poll_reg:
735 if (ret_val == QLA_ERROR) {
736 ha->reset_tmplt.seq_error++;
737 ql4_printk(KERN_ERR, ha, "%s: Poll Failed: 0x%08x 0x%08x 0x%08x\n",
738 __func__, value, test_mask, test_result);
739 }
740
741 return ret_val;
742 }
743
744 static int qla4_83xx_reset_seq_checksum_test(struct scsi_qla_host *ha)
745 {
746 uint32_t sum = 0;
747 uint16_t *buff = (uint16_t *)ha->reset_tmplt.buff;
748 int u16_count = ha->reset_tmplt.hdr->size / sizeof(uint16_t);
749 int ret_val;
750
751 while (u16_count-- > 0)
752 sum += *buff++;
753
754 while (sum >> 16)
755 sum = (sum & 0xFFFF) + (sum >> 16);
756
757 /* checksum of 0 indicates a valid template */
758 if (~sum) {
759 ret_val = QLA_SUCCESS;
760 } else {
761 ql4_printk(KERN_ERR, ha, "%s: Reset seq checksum failed\n",
762 __func__);
763 ret_val = QLA_ERROR;
764 }
765
766 return ret_val;
767 }
768
769 /**
770 * qla4_83xx_read_reset_template - Read Reset Template from Flash
771 * @ha: Pointer to adapter structure
772 **/
773 void qla4_83xx_read_reset_template(struct scsi_qla_host *ha)
774 {
775 uint8_t *p_buff;
776 uint32_t addr, tmplt_hdr_def_size, tmplt_hdr_size;
777 uint32_t ret_val;
778
779 ha->reset_tmplt.seq_error = 0;
780 ha->reset_tmplt.buff = vmalloc(QLA83XX_RESTART_TEMPLATE_SIZE);
781 if (ha->reset_tmplt.buff == NULL) {
782 ql4_printk(KERN_ERR, ha, "%s: Failed to allocate reset template resources\n",
783 __func__);
784 goto exit_read_reset_template;
785 }
786
787 p_buff = ha->reset_tmplt.buff;
788 addr = QLA83XX_RESET_TEMPLATE_ADDR;
789
790 tmplt_hdr_def_size = sizeof(struct qla4_83xx_reset_template_hdr) /
791 sizeof(uint32_t);
792
793 DEBUG2(ql4_printk(KERN_INFO, ha,
794 "%s: Read template hdr size %d from Flash\n",
795 __func__, tmplt_hdr_def_size));
796
797 /* Copy template header from flash */
798 ret_val = qla4_83xx_flash_read_u32(ha, addr, p_buff,
799 tmplt_hdr_def_size);
800 if (ret_val != QLA_SUCCESS) {
801 ql4_printk(KERN_ERR, ha, "%s: Failed to read reset template\n",
802 __func__);
803 goto exit_read_template_error;
804 }
805
806 ha->reset_tmplt.hdr =
807 (struct qla4_83xx_reset_template_hdr *)ha->reset_tmplt.buff;
808
809 /* Validate the template header size and signature */
810 tmplt_hdr_size = ha->reset_tmplt.hdr->hdr_size/sizeof(uint32_t);
811 if ((tmplt_hdr_size != tmplt_hdr_def_size) ||
812 (ha->reset_tmplt.hdr->signature != RESET_TMPLT_HDR_SIGNATURE)) {
813 ql4_printk(KERN_ERR, ha, "%s: Template Header size %d is invalid, tmplt_hdr_def_size %d\n",
814 __func__, tmplt_hdr_size, tmplt_hdr_def_size);
815 goto exit_read_template_error;
816 }
817
818 addr = QLA83XX_RESET_TEMPLATE_ADDR + ha->reset_tmplt.hdr->hdr_size;
819 p_buff = ha->reset_tmplt.buff + ha->reset_tmplt.hdr->hdr_size;
820 tmplt_hdr_def_size = (ha->reset_tmplt.hdr->size -
821 ha->reset_tmplt.hdr->hdr_size) / sizeof(uint32_t);
822
823 DEBUG2(ql4_printk(KERN_INFO, ha,
824 "%s: Read rest of the template size %d\n",
825 __func__, ha->reset_tmplt.hdr->size));
826
827 /* Copy rest of the template */
828 ret_val = qla4_83xx_flash_read_u32(ha, addr, p_buff,
829 tmplt_hdr_def_size);
830 if (ret_val != QLA_SUCCESS) {
831 ql4_printk(KERN_ERR, ha, "%s: Failed to read reset tempelate\n",
832 __func__);
833 goto exit_read_template_error;
834 }
835
836 /* Integrity check */
837 if (qla4_83xx_reset_seq_checksum_test(ha)) {
838 ql4_printk(KERN_ERR, ha, "%s: Reset Seq checksum failed!\n",
839 __func__);
840 goto exit_read_template_error;
841 }
842 DEBUG2(ql4_printk(KERN_INFO, ha,
843 "%s: Reset Seq checksum passed, Get stop, start and init seq offsets\n",
844 __func__));
845
846 /* Get STOP, START, INIT sequence offsets */
847 ha->reset_tmplt.init_offset = ha->reset_tmplt.buff +
848 ha->reset_tmplt.hdr->init_seq_offset;
849 ha->reset_tmplt.start_offset = ha->reset_tmplt.buff +
850 ha->reset_tmplt.hdr->start_seq_offset;
851 ha->reset_tmplt.stop_offset = ha->reset_tmplt.buff +
852 ha->reset_tmplt.hdr->hdr_size;
853 qla4_83xx_dump_reset_seq_hdr(ha);
854
855 goto exit_read_reset_template;
856
857 exit_read_template_error:
858 vfree(ha->reset_tmplt.buff);
859
860 exit_read_reset_template:
861 return;
862 }
863
864 /**
865 * qla4_83xx_read_write_crb_reg - Read from raddr and write value to waddr.
866 *
867 * @ha : Pointer to adapter structure
868 * @raddr : CRB address to read from
869 * @waddr : CRB address to write to
870 **/
871 static void qla4_83xx_read_write_crb_reg(struct scsi_qla_host *ha,
872 uint32_t raddr, uint32_t waddr)
873 {
874 uint32_t value;
875
876 qla4_83xx_rd_reg_indirect(ha, raddr, &value);
877 qla4_83xx_wr_reg_indirect(ha, waddr, value);
878 }
879
880 /**
881 * qla4_83xx_rmw_crb_reg - Read Modify Write crb register
882 *
883 * This function read value from raddr, AND with test_mask,
884 * Shift Left,Right/OR/XOR with values RMW header and write value to waddr.
885 *
886 * @ha : Pointer to adapter structure
887 * @raddr : CRB address to read from
888 * @waddr : CRB address to write to
889 * @p_rmw_hdr : header with shift/or/xor values.
890 **/
891 static void qla4_83xx_rmw_crb_reg(struct scsi_qla_host *ha, uint32_t raddr,
892 uint32_t waddr,
893 struct qla4_83xx_rmw *p_rmw_hdr)
894 {
895 uint32_t value;
896
897 if (p_rmw_hdr->index_a)
898 value = ha->reset_tmplt.array[p_rmw_hdr->index_a];
899 else
900 qla4_83xx_rd_reg_indirect(ha, raddr, &value);
901
902 value &= p_rmw_hdr->test_mask;
903 value <<= p_rmw_hdr->shl;
904 value >>= p_rmw_hdr->shr;
905 value |= p_rmw_hdr->or_value;
906 value ^= p_rmw_hdr->xor_value;
907
908 qla4_83xx_wr_reg_indirect(ha, waddr, value);
909
910 return;
911 }
912
913 static void qla4_83xx_write_list(struct scsi_qla_host *ha,
914 struct qla4_83xx_reset_entry_hdr *p_hdr)
915 {
916 struct qla4_83xx_entry *p_entry;
917 uint32_t i;
918
919 p_entry = (struct qla4_83xx_entry *)
920 ((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
921
922 for (i = 0; i < p_hdr->count; i++, p_entry++) {
923 qla4_83xx_wr_reg_indirect(ha, p_entry->arg1, p_entry->arg2);
924 if (p_hdr->delay)
925 udelay((uint32_t)(p_hdr->delay));
926 }
927 }
928
929 static void qla4_83xx_read_write_list(struct scsi_qla_host *ha,
930 struct qla4_83xx_reset_entry_hdr *p_hdr)
931 {
932 struct qla4_83xx_entry *p_entry;
933 uint32_t i;
934
935 p_entry = (struct qla4_83xx_entry *)
936 ((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
937
938 for (i = 0; i < p_hdr->count; i++, p_entry++) {
939 qla4_83xx_read_write_crb_reg(ha, p_entry->arg1, p_entry->arg2);
940 if (p_hdr->delay)
941 udelay((uint32_t)(p_hdr->delay));
942 }
943 }
944
945 static void qla4_83xx_poll_list(struct scsi_qla_host *ha,
946 struct qla4_83xx_reset_entry_hdr *p_hdr)
947 {
948 long delay;
949 struct qla4_83xx_entry *p_entry;
950 struct qla4_83xx_poll *p_poll;
951 uint32_t i;
952 uint32_t value;
953
954 p_poll = (struct qla4_83xx_poll *)
955 ((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
956
957 /* Entries start after 8 byte qla4_83xx_poll, poll header contains
958 * the test_mask, test_value. */
959 p_entry = (struct qla4_83xx_entry *)((char *)p_poll +
960 sizeof(struct qla4_83xx_poll));
961
962 delay = (long)p_hdr->delay;
963 if (!delay) {
964 for (i = 0; i < p_hdr->count; i++, p_entry++) {
965 qla4_83xx_poll_reg(ha, p_entry->arg1, delay,
966 p_poll->test_mask,
967 p_poll->test_value);
968 }
969 } else {
970 for (i = 0; i < p_hdr->count; i++, p_entry++) {
971 if (qla4_83xx_poll_reg(ha, p_entry->arg1, delay,
972 p_poll->test_mask,
973 p_poll->test_value)) {
974 qla4_83xx_rd_reg_indirect(ha, p_entry->arg1,
975 &value);
976 qla4_83xx_rd_reg_indirect(ha, p_entry->arg2,
977 &value);
978 }
979 }
980 }
981 }
982
983 static void qla4_83xx_poll_write_list(struct scsi_qla_host *ha,
984 struct qla4_83xx_reset_entry_hdr *p_hdr)
985 {
986 long delay;
987 struct qla4_83xx_quad_entry *p_entry;
988 struct qla4_83xx_poll *p_poll;
989 uint32_t i;
990
991 p_poll = (struct qla4_83xx_poll *)
992 ((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
993 p_entry = (struct qla4_83xx_quad_entry *)
994 ((char *)p_poll + sizeof(struct qla4_83xx_poll));
995 delay = (long)p_hdr->delay;
996
997 for (i = 0; i < p_hdr->count; i++, p_entry++) {
998 qla4_83xx_wr_reg_indirect(ha, p_entry->dr_addr,
999 p_entry->dr_value);
1000 qla4_83xx_wr_reg_indirect(ha, p_entry->ar_addr,
1001 p_entry->ar_value);
1002 if (delay) {
1003 if (qla4_83xx_poll_reg(ha, p_entry->ar_addr, delay,
1004 p_poll->test_mask,
1005 p_poll->test_value)) {
1006 DEBUG2(ql4_printk(KERN_INFO, ha,
1007 "%s: Timeout Error: poll list, item_num %d, entry_num %d\n",
1008 __func__, i,
1009 ha->reset_tmplt.seq_index));
1010 }
1011 }
1012 }
1013 }
1014
1015 static void qla4_83xx_read_modify_write(struct scsi_qla_host *ha,
1016 struct qla4_83xx_reset_entry_hdr *p_hdr)
1017 {
1018 struct qla4_83xx_entry *p_entry;
1019 struct qla4_83xx_rmw *p_rmw_hdr;
1020 uint32_t i;
1021
1022 p_rmw_hdr = (struct qla4_83xx_rmw *)
1023 ((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
1024 p_entry = (struct qla4_83xx_entry *)
1025 ((char *)p_rmw_hdr + sizeof(struct qla4_83xx_rmw));
1026
1027 for (i = 0; i < p_hdr->count; i++, p_entry++) {
1028 qla4_83xx_rmw_crb_reg(ha, p_entry->arg1, p_entry->arg2,
1029 p_rmw_hdr);
1030 if (p_hdr->delay)
1031 udelay((uint32_t)(p_hdr->delay));
1032 }
1033 }
1034
1035 static void qla4_83xx_pause(struct scsi_qla_host *ha,
1036 struct qla4_83xx_reset_entry_hdr *p_hdr)
1037 {
1038 if (p_hdr->delay)
1039 mdelay((uint32_t)((long)p_hdr->delay));
1040 }
1041
1042 static void qla4_83xx_poll_read_list(struct scsi_qla_host *ha,
1043 struct qla4_83xx_reset_entry_hdr *p_hdr)
1044 {
1045 long delay;
1046 int index;
1047 struct qla4_83xx_quad_entry *p_entry;
1048 struct qla4_83xx_poll *p_poll;
1049 uint32_t i;
1050 uint32_t value;
1051
1052 p_poll = (struct qla4_83xx_poll *)
1053 ((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
1054 p_entry = (struct qla4_83xx_quad_entry *)
1055 ((char *)p_poll + sizeof(struct qla4_83xx_poll));
1056 delay = (long)p_hdr->delay;
1057
1058 for (i = 0; i < p_hdr->count; i++, p_entry++) {
1059 qla4_83xx_wr_reg_indirect(ha, p_entry->ar_addr,
1060 p_entry->ar_value);
1061 if (delay) {
1062 if (qla4_83xx_poll_reg(ha, p_entry->ar_addr, delay,
1063 p_poll->test_mask,
1064 p_poll->test_value)) {
1065 DEBUG2(ql4_printk(KERN_INFO, ha,
1066 "%s: Timeout Error: poll list, Item_num %d, entry_num %d\n",
1067 __func__, i,
1068 ha->reset_tmplt.seq_index));
1069 } else {
1070 index = ha->reset_tmplt.array_index;
1071 qla4_83xx_rd_reg_indirect(ha, p_entry->dr_addr,
1072 &value);
1073 ha->reset_tmplt.array[index++] = value;
1074
1075 if (index == QLA83XX_MAX_RESET_SEQ_ENTRIES)
1076 ha->reset_tmplt.array_index = 1;
1077 }
1078 }
1079 }
1080 }
1081
1082 static void qla4_83xx_seq_end(struct scsi_qla_host *ha,
1083 struct qla4_83xx_reset_entry_hdr *p_hdr)
1084 {
1085 ha->reset_tmplt.seq_end = 1;
1086 }
1087
1088 static void qla4_83xx_template_end(struct scsi_qla_host *ha,
1089 struct qla4_83xx_reset_entry_hdr *p_hdr)
1090 {
1091 ha->reset_tmplt.template_end = 1;
1092
1093 if (ha->reset_tmplt.seq_error == 0) {
1094 DEBUG2(ql4_printk(KERN_INFO, ha,
1095 "%s: Reset sequence completed SUCCESSFULLY.\n",
1096 __func__));
1097 } else {
1098 ql4_printk(KERN_ERR, ha, "%s: Reset sequence completed with some timeout errors.\n",
1099 __func__);
1100 }
1101 }
1102
1103 /**
1104 * qla4_83xx_process_reset_template - Process reset template.
1105 *
1106 * Process all entries in reset template till entry with SEQ_END opcode,
1107 * which indicates end of the reset template processing. Each entry has a
1108 * Reset Entry header, entry opcode/command, with size of the entry, number
1109 * of entries in sub-sequence and delay in microsecs or timeout in millisecs.
1110 *
1111 * @ha : Pointer to adapter structure
1112 * @p_buff : Common reset entry header.
1113 **/
1114 static void qla4_83xx_process_reset_template(struct scsi_qla_host *ha,
1115 char *p_buff)
1116 {
1117 int index, entries;
1118 struct qla4_83xx_reset_entry_hdr *p_hdr;
1119 char *p_entry = p_buff;
1120
1121 ha->reset_tmplt.seq_end = 0;
1122 ha->reset_tmplt.template_end = 0;
1123 entries = ha->reset_tmplt.hdr->entries;
1124 index = ha->reset_tmplt.seq_index;
1125
1126 for (; (!ha->reset_tmplt.seq_end) && (index < entries); index++) {
1127
1128 p_hdr = (struct qla4_83xx_reset_entry_hdr *)p_entry;
1129 switch (p_hdr->cmd) {
1130 case OPCODE_NOP:
1131 break;
1132 case OPCODE_WRITE_LIST:
1133 qla4_83xx_write_list(ha, p_hdr);
1134 break;
1135 case OPCODE_READ_WRITE_LIST:
1136 qla4_83xx_read_write_list(ha, p_hdr);
1137 break;
1138 case OPCODE_POLL_LIST:
1139 qla4_83xx_poll_list(ha, p_hdr);
1140 break;
1141 case OPCODE_POLL_WRITE_LIST:
1142 qla4_83xx_poll_write_list(ha, p_hdr);
1143 break;
1144 case OPCODE_READ_MODIFY_WRITE:
1145 qla4_83xx_read_modify_write(ha, p_hdr);
1146 break;
1147 case OPCODE_SEQ_PAUSE:
1148 qla4_83xx_pause(ha, p_hdr);
1149 break;
1150 case OPCODE_SEQ_END:
1151 qla4_83xx_seq_end(ha, p_hdr);
1152 break;
1153 case OPCODE_TMPL_END:
1154 qla4_83xx_template_end(ha, p_hdr);
1155 break;
1156 case OPCODE_POLL_READ_LIST:
1157 qla4_83xx_poll_read_list(ha, p_hdr);
1158 break;
1159 default:
1160 ql4_printk(KERN_ERR, ha, "%s: Unknown command ==> 0x%04x on entry = %d\n",
1161 __func__, p_hdr->cmd, index);
1162 break;
1163 }
1164
1165 /* Set pointer to next entry in the sequence. */
1166 p_entry += p_hdr->size;
1167 }
1168
1169 ha->reset_tmplt.seq_index = index;
1170 }
1171
1172 static void qla4_83xx_process_stop_seq(struct scsi_qla_host *ha)
1173 {
1174 ha->reset_tmplt.seq_index = 0;
1175 qla4_83xx_process_reset_template(ha, ha->reset_tmplt.stop_offset);
1176
1177 if (ha->reset_tmplt.seq_end != 1)
1178 ql4_printk(KERN_ERR, ha, "%s: Abrupt STOP Sub-Sequence end.\n",
1179 __func__);
1180 }
1181
1182 static void qla4_83xx_process_start_seq(struct scsi_qla_host *ha)
1183 {
1184 qla4_83xx_process_reset_template(ha, ha->reset_tmplt.start_offset);
1185
1186 if (ha->reset_tmplt.template_end != 1)
1187 ql4_printk(KERN_ERR, ha, "%s: Abrupt START Sub-Sequence end.\n",
1188 __func__);
1189 }
1190
1191 static void qla4_83xx_process_init_seq(struct scsi_qla_host *ha)
1192 {
1193 qla4_83xx_process_reset_template(ha, ha->reset_tmplt.init_offset);
1194
1195 if (ha->reset_tmplt.seq_end != 1)
1196 ql4_printk(KERN_ERR, ha, "%s: Abrupt INIT Sub-Sequence end.\n",
1197 __func__);
1198 }
1199
1200 static int qla4_83xx_restart(struct scsi_qla_host *ha)
1201 {
1202 int ret_val = QLA_SUCCESS;
1203 uint32_t idc_ctrl;
1204
1205 qla4_83xx_process_stop_seq(ha);
1206
1207 /*
1208 * Collect minidump.
1209 * If IDC_CTRL BIT1 is set, clear it on going to INIT state and
1210 * don't collect minidump
1211 */
1212 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
1213 if (idc_ctrl & GRACEFUL_RESET_BIT1) {
1214 qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL,
1215 (idc_ctrl & ~GRACEFUL_RESET_BIT1));
1216 ql4_printk(KERN_INFO, ha, "%s: Graceful RESET: Not collecting minidump\n",
1217 __func__);
1218 } else {
1219 qla4_8xxx_get_minidump(ha);
1220 }
1221
1222 qla4_83xx_process_init_seq(ha);
1223
1224 if (qla4_83xx_copy_bootloader(ha)) {
1225 ql4_printk(KERN_ERR, ha, "%s: Copy bootloader, firmware restart failed!\n",
1226 __func__);
1227 ret_val = QLA_ERROR;
1228 goto exit_restart;
1229 }
1230
1231 qla4_83xx_wr_reg(ha, QLA83XX_FW_IMAGE_VALID, QLA83XX_BOOT_FROM_FLASH);
1232 qla4_83xx_process_start_seq(ha);
1233
1234 exit_restart:
1235 return ret_val;
1236 }
1237
1238 int qla4_83xx_start_firmware(struct scsi_qla_host *ha)
1239 {
1240 int ret_val = QLA_SUCCESS;
1241
1242 ret_val = qla4_83xx_restart(ha);
1243 if (ret_val == QLA_ERROR) {
1244 ql4_printk(KERN_ERR, ha, "%s: Restart error\n", __func__);
1245 goto exit_start_fw;
1246 } else {
1247 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Restart done\n",
1248 __func__));
1249 }
1250
1251 ret_val = qla4_83xx_check_cmd_peg_status(ha);
1252 if (ret_val == QLA_ERROR)
1253 ql4_printk(KERN_ERR, ha, "%s: Peg not initialized\n",
1254 __func__);
1255
1256 exit_start_fw:
1257 return ret_val;
1258 }
1259
1260 /*----------------------Interrupt Related functions ---------------------*/
1261
1262 static void qla4_83xx_disable_iocb_intrs(struct scsi_qla_host *ha)
1263 {
1264 if (test_and_clear_bit(AF_83XX_IOCB_INTR_ON, &ha->flags))
1265 qla4_8xxx_intr_disable(ha);
1266 }
1267
1268 static void qla4_83xx_disable_mbox_intrs(struct scsi_qla_host *ha)
1269 {
1270 uint32_t mb_int, ret;
1271
1272 if (test_and_clear_bit(AF_83XX_MBOX_INTR_ON, &ha->flags)) {
1273 ret = readl(&ha->qla4_83xx_reg->mbox_int);
1274 mb_int = ret & ~INT_ENABLE_FW_MB;
1275 writel(mb_int, &ha->qla4_83xx_reg->mbox_int);
1276 writel(1, &ha->qla4_83xx_reg->leg_int_mask);
1277 }
1278 }
1279
1280 void qla4_83xx_disable_intrs(struct scsi_qla_host *ha)
1281 {
1282 qla4_83xx_disable_mbox_intrs(ha);
1283 qla4_83xx_disable_iocb_intrs(ha);
1284 }
1285
1286 static void qla4_83xx_enable_iocb_intrs(struct scsi_qla_host *ha)
1287 {
1288 if (!test_bit(AF_83XX_IOCB_INTR_ON, &ha->flags)) {
1289 qla4_8xxx_intr_enable(ha);
1290 set_bit(AF_83XX_IOCB_INTR_ON, &ha->flags);
1291 }
1292 }
1293
1294 void qla4_83xx_enable_mbox_intrs(struct scsi_qla_host *ha)
1295 {
1296 uint32_t mb_int;
1297
1298 if (!test_bit(AF_83XX_MBOX_INTR_ON, &ha->flags)) {
1299 mb_int = INT_ENABLE_FW_MB;
1300 writel(mb_int, &ha->qla4_83xx_reg->mbox_int);
1301 writel(0, &ha->qla4_83xx_reg->leg_int_mask);
1302 set_bit(AF_83XX_MBOX_INTR_ON, &ha->flags);
1303 }
1304 }
1305
1306
1307 void qla4_83xx_enable_intrs(struct scsi_qla_host *ha)
1308 {
1309 qla4_83xx_enable_mbox_intrs(ha);
1310 qla4_83xx_enable_iocb_intrs(ha);
1311 }
1312
1313
1314 void qla4_83xx_queue_mbox_cmd(struct scsi_qla_host *ha, uint32_t *mbx_cmd,
1315 int incount)
1316 {
1317 int i;
1318
1319 /* Load all mailbox registers, except mailbox 0. */
1320 for (i = 1; i < incount; i++)
1321 writel(mbx_cmd[i], &ha->qla4_83xx_reg->mailbox_in[i]);
1322
1323 writel(mbx_cmd[0], &ha->qla4_83xx_reg->mailbox_in[0]);
1324
1325 /* Set Host Interrupt register to 1, to tell the firmware that
1326 * a mailbox command is pending. Firmware after reading the
1327 * mailbox command, clears the host interrupt register */
1328 writel(HINT_MBX_INT_PENDING, &ha->qla4_83xx_reg->host_intr);
1329 }
1330
1331 void qla4_83xx_process_mbox_intr(struct scsi_qla_host *ha, int outcount)
1332 {
1333 int intr_status;
1334
1335 intr_status = readl(&ha->qla4_83xx_reg->risc_intr);
1336 if (intr_status) {
1337 ha->mbox_status_count = outcount;
1338 ha->isp_ops->interrupt_service_routine(ha, intr_status);
1339 }
1340 }
1341
1342 /**
1343 * qla4_83xx_isp_reset - Resets ISP and aborts all outstanding commands.
1344 * @ha: pointer to host adapter structure.
1345 **/
1346 int qla4_83xx_isp_reset(struct scsi_qla_host *ha)
1347 {
1348 int rval;
1349 uint32_t dev_state;
1350
1351 ha->isp_ops->idc_lock(ha);
1352 dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
1353
1354 if (ql4xdontresethba)
1355 qla4_83xx_set_idc_dontreset(ha);
1356
1357 if (dev_state == QLA8XXX_DEV_READY) {
1358 /* If IDC_CTRL DONTRESETHBA_BIT0 is set dont do reset
1359 * recovery */
1360 if (qla4_83xx_idc_dontreset(ha) == DONTRESET_BIT0) {
1361 ql4_printk(KERN_ERR, ha, "%s: Reset recovery disabled\n",
1362 __func__);
1363 rval = QLA_ERROR;
1364 goto exit_isp_reset;
1365 }
1366
1367 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: HW State: NEED RESET\n",
1368 __func__));
1369 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
1370 QLA8XXX_DEV_NEED_RESET);
1371
1372 } else {
1373 /* If device_state is NEED_RESET, go ahead with
1374 * Reset,irrespective of ql4xdontresethba. This is to allow a
1375 * non-reset-owner to force a reset. Non-reset-owner sets
1376 * the IDC_CTRL BIT0 to prevent Reset-owner from doing a Reset
1377 * and then forces a Reset by setting device_state to
1378 * NEED_RESET. */
1379 DEBUG2(ql4_printk(KERN_INFO, ha,
1380 "%s: HW state already set to NEED_RESET\n",
1381 __func__));
1382 }
1383
1384 /* For ISP8324 and ISP8042, Reset owner is NIC, iSCSI or FCOE based on
1385 * priority and which drivers are present. Unlike ISP8022, the function
1386 * setting NEED_RESET, may not be the Reset owner. */
1387 if (qla4_83xx_can_perform_reset(ha))
1388 set_bit(AF_8XXX_RST_OWNER, &ha->flags);
1389
1390 ha->isp_ops->idc_unlock(ha);
1391 rval = qla4_8xxx_device_state_handler(ha);
1392
1393 ha->isp_ops->idc_lock(ha);
1394 qla4_8xxx_clear_rst_ready(ha);
1395 exit_isp_reset:
1396 ha->isp_ops->idc_unlock(ha);
1397
1398 if (rval == QLA_SUCCESS)
1399 clear_bit(AF_FW_RECOVERY, &ha->flags);
1400
1401 return rval;
1402 }
1403
1404 static void qla4_83xx_dump_pause_control_regs(struct scsi_qla_host *ha)
1405 {
1406 u32 val = 0, val1 = 0;
1407 int i, status = QLA_SUCCESS;
1408
1409 status = qla4_83xx_rd_reg_indirect(ha, QLA83XX_SRE_SHIM_CONTROL, &val);
1410 DEBUG2(ql4_printk(KERN_INFO, ha, "SRE-Shim Ctrl:0x%x\n", val));
1411
1412 /* Port 0 Rx Buffer Pause Threshold Registers. */
1413 DEBUG2(ql4_printk(KERN_INFO, ha,
1414 "Port 0 Rx Buffer Pause Threshold Registers[TC7..TC0]:"));
1415 for (i = 0; i < 8; i++) {
1416 status = qla4_83xx_rd_reg_indirect(ha,
1417 QLA83XX_PORT0_RXB_PAUSE_THRS + (i * 0x4), &val);
1418 DEBUG2(pr_info("0x%x ", val));
1419 }
1420
1421 DEBUG2(pr_info("\n"));
1422
1423 /* Port 1 Rx Buffer Pause Threshold Registers. */
1424 DEBUG2(ql4_printk(KERN_INFO, ha,
1425 "Port 1 Rx Buffer Pause Threshold Registers[TC7..TC0]:"));
1426 for (i = 0; i < 8; i++) {
1427 status = qla4_83xx_rd_reg_indirect(ha,
1428 QLA83XX_PORT1_RXB_PAUSE_THRS + (i * 0x4), &val);
1429 DEBUG2(pr_info("0x%x ", val));
1430 }
1431
1432 DEBUG2(pr_info("\n"));
1433
1434 /* Port 0 RxB Traffic Class Max Cell Registers. */
1435 DEBUG2(ql4_printk(KERN_INFO, ha,
1436 "Port 0 RxB Traffic Class Max Cell Registers[3..0]:"));
1437 for (i = 0; i < 4; i++) {
1438 status = qla4_83xx_rd_reg_indirect(ha,
1439 QLA83XX_PORT0_RXB_TC_MAX_CELL + (i * 0x4), &val);
1440 DEBUG2(pr_info("0x%x ", val));
1441 }
1442
1443 DEBUG2(pr_info("\n"));
1444
1445 /* Port 1 RxB Traffic Class Max Cell Registers. */
1446 DEBUG2(ql4_printk(KERN_INFO, ha,
1447 "Port 1 RxB Traffic Class Max Cell Registers[3..0]:"));
1448 for (i = 0; i < 4; i++) {
1449 status = qla4_83xx_rd_reg_indirect(ha,
1450 QLA83XX_PORT1_RXB_TC_MAX_CELL + (i * 0x4), &val);
1451 DEBUG2(pr_info("0x%x ", val));
1452 }
1453
1454 DEBUG2(pr_info("\n"));
1455
1456 /* Port 0 RxB Rx Traffic Class Stats. */
1457 DEBUG2(ql4_printk(KERN_INFO, ha,
1458 "Port 0 RxB Rx Traffic Class Stats [TC7..TC0]"));
1459 for (i = 7; i >= 0; i--) {
1460 status = qla4_83xx_rd_reg_indirect(ha,
1461 QLA83XX_PORT0_RXB_TC_STATS,
1462 &val);
1463 val &= ~(0x7 << 29); /* Reset bits 29 to 31 */
1464 qla4_83xx_wr_reg_indirect(ha, QLA83XX_PORT0_RXB_TC_STATS,
1465 (val | (i << 29)));
1466 status = qla4_83xx_rd_reg_indirect(ha,
1467 QLA83XX_PORT0_RXB_TC_STATS,
1468 &val);
1469 DEBUG2(pr_info("0x%x ", val));
1470 }
1471
1472 DEBUG2(pr_info("\n"));
1473
1474 /* Port 1 RxB Rx Traffic Class Stats. */
1475 DEBUG2(ql4_printk(KERN_INFO, ha,
1476 "Port 1 RxB Rx Traffic Class Stats [TC7..TC0]"));
1477 for (i = 7; i >= 0; i--) {
1478 status = qla4_83xx_rd_reg_indirect(ha,
1479 QLA83XX_PORT1_RXB_TC_STATS,
1480 &val);
1481 val &= ~(0x7 << 29); /* Reset bits 29 to 31 */
1482 qla4_83xx_wr_reg_indirect(ha, QLA83XX_PORT1_RXB_TC_STATS,
1483 (val | (i << 29)));
1484 status = qla4_83xx_rd_reg_indirect(ha,
1485 QLA83XX_PORT1_RXB_TC_STATS,
1486 &val);
1487 DEBUG2(pr_info("0x%x ", val));
1488 }
1489
1490 DEBUG2(pr_info("\n"));
1491
1492 status = qla4_83xx_rd_reg_indirect(ha, QLA83XX_PORT2_IFB_PAUSE_THRS,
1493 &val);
1494 status = qla4_83xx_rd_reg_indirect(ha, QLA83XX_PORT3_IFB_PAUSE_THRS,
1495 &val1);
1496
1497 DEBUG2(ql4_printk(KERN_INFO, ha,
1498 "IFB-Pause Thresholds: Port 2:0x%x, Port 3:0x%x\n",
1499 val, val1));
1500 }
1501
1502 static void __qla4_83xx_disable_pause(struct scsi_qla_host *ha)
1503 {
1504 int i;
1505
1506 /* set SRE-Shim Control Register */
1507 qla4_83xx_wr_reg_indirect(ha, QLA83XX_SRE_SHIM_CONTROL,
1508 QLA83XX_SET_PAUSE_VAL);
1509
1510 for (i = 0; i < 8; i++) {
1511 /* Port 0 Rx Buffer Pause Threshold Registers. */
1512 qla4_83xx_wr_reg_indirect(ha,
1513 QLA83XX_PORT0_RXB_PAUSE_THRS + (i * 0x4),
1514 QLA83XX_SET_PAUSE_VAL);
1515 /* Port 1 Rx Buffer Pause Threshold Registers. */
1516 qla4_83xx_wr_reg_indirect(ha,
1517 QLA83XX_PORT1_RXB_PAUSE_THRS + (i * 0x4),
1518 QLA83XX_SET_PAUSE_VAL);
1519 }
1520
1521 for (i = 0; i < 4; i++) {
1522 /* Port 0 RxB Traffic Class Max Cell Registers. */
1523 qla4_83xx_wr_reg_indirect(ha,
1524 QLA83XX_PORT0_RXB_TC_MAX_CELL + (i * 0x4),
1525 QLA83XX_SET_TC_MAX_CELL_VAL);
1526 /* Port 1 RxB Traffic Class Max Cell Registers. */
1527 qla4_83xx_wr_reg_indirect(ha,
1528 QLA83XX_PORT1_RXB_TC_MAX_CELL + (i * 0x4),
1529 QLA83XX_SET_TC_MAX_CELL_VAL);
1530 }
1531
1532 qla4_83xx_wr_reg_indirect(ha, QLA83XX_PORT2_IFB_PAUSE_THRS,
1533 QLA83XX_SET_PAUSE_VAL);
1534 qla4_83xx_wr_reg_indirect(ha, QLA83XX_PORT3_IFB_PAUSE_THRS,
1535 QLA83XX_SET_PAUSE_VAL);
1536
1537 ql4_printk(KERN_INFO, ha, "Disabled pause frames successfully.\n");
1538 }
1539
1540 /**
1541 * qla4_83xx_eport_init - Initialize EPort.
1542 * @ha: Pointer to host adapter structure.
1543 *
1544 * If EPort hardware is in reset state before disabling pause, there would be
1545 * serious hardware wedging issues. To prevent this perform eport init everytime
1546 * before disabling pause frames.
1547 **/
1548 static void qla4_83xx_eport_init(struct scsi_qla_host *ha)
1549 {
1550 /* Clear the 8 registers */
1551 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_REG, 0x0);
1552 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_PORT0, 0x0);
1553 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_PORT1, 0x0);
1554 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_PORT2, 0x0);
1555 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_PORT3, 0x0);
1556 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_SRE_SHIM, 0x0);
1557 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_EPG_SHIM, 0x0);
1558 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_ETHER_PCS, 0x0);
1559
1560 /* Write any value to Reset Control register */
1561 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_CONTROL, 0xFF);
1562
1563 ql4_printk(KERN_INFO, ha, "EPORT is out of reset.\n");
1564 }
1565
1566 void qla4_83xx_disable_pause(struct scsi_qla_host *ha)
1567 {
1568 ha->isp_ops->idc_lock(ha);
1569 /* Before disabling pause frames, ensure that eport is not in reset */
1570 qla4_83xx_eport_init(ha);
1571 qla4_83xx_dump_pause_control_regs(ha);
1572 __qla4_83xx_disable_pause(ha);
1573 ha->isp_ops->idc_unlock(ha);
1574 }
1575
1576 /**
1577 * qla4_83xx_is_detached - Check if we are marked invisible.
1578 * @ha: Pointer to host adapter structure.
1579 **/
1580 int qla4_83xx_is_detached(struct scsi_qla_host *ha)
1581 {
1582 uint32_t drv_active;
1583
1584 drv_active = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DRV_ACTIVE);
1585
1586 if (test_bit(AF_INIT_DONE, &ha->flags) &&
1587 !(drv_active & (1 << ha->func_num))) {
1588 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: drv_active = 0x%X\n",
1589 __func__, drv_active));
1590 return QLA_SUCCESS;
1591 }
1592
1593 return QLA_ERROR;
1594 }
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