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
qla4_83xx_rd_reg(struct scsi_qla_host * ha,ulong addr)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
qla4_83xx_wr_reg(struct scsi_qla_host * ha,ulong addr,uint32_t val)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
qla4_83xx_set_win_base(struct scsi_qla_host * ha,uint32_t addr)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
qla4_83xx_rd_reg_indirect(struct scsi_qla_host * ha,uint32_t addr,uint32_t * data)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 *data = 0xffffffff;
53 ql4_printk(KERN_ERR, ha, "%s: failed read of addr 0x%x!\n",
54 __func__, addr);
55 }
56
57 return ret_val;
58 }
59
qla4_83xx_wr_reg_indirect(struct scsi_qla_host * ha,uint32_t addr,uint32_t data)60 int qla4_83xx_wr_reg_indirect(struct scsi_qla_host *ha, uint32_t addr,
61 uint32_t data)
62 {
63 int ret_val;
64
65 ret_val = qla4_83xx_set_win_base(ha, addr);
66
67 if (ret_val == QLA_SUCCESS)
68 qla4_83xx_wr_reg(ha, QLA83XX_WILDCARD, data);
69 else
70 ql4_printk(KERN_ERR, ha, "%s: failed wrt to addr 0x%x, data 0x%x\n",
71 __func__, addr, data);
72
73 return ret_val;
74 }
75
qla4_83xx_flash_lock(struct scsi_qla_host * ha)76 static int qla4_83xx_flash_lock(struct scsi_qla_host *ha)
77 {
78 int lock_owner;
79 int timeout = 0;
80 uint32_t lock_status = 0;
81 int ret_val = QLA_SUCCESS;
82
83 while (lock_status == 0) {
84 lock_status = qla4_83xx_rd_reg(ha, QLA83XX_FLASH_LOCK);
85 if (lock_status)
86 break;
87
88 if (++timeout >= QLA83XX_FLASH_LOCK_TIMEOUT / 20) {
89 lock_owner = qla4_83xx_rd_reg(ha,
90 QLA83XX_FLASH_LOCK_ID);
91 ql4_printk(KERN_ERR, ha, "%s: flash lock by func %d failed, held by func %d\n",
92 __func__, ha->func_num, lock_owner);
93 ret_val = QLA_ERROR;
94 break;
95 }
96 msleep(20);
97 }
98
99 qla4_83xx_wr_reg(ha, QLA83XX_FLASH_LOCK_ID, ha->func_num);
100 return ret_val;
101 }
102
qla4_83xx_flash_unlock(struct scsi_qla_host * ha)103 static void qla4_83xx_flash_unlock(struct scsi_qla_host *ha)
104 {
105 /* Reading FLASH_UNLOCK register unlocks the Flash */
106 qla4_83xx_wr_reg(ha, QLA83XX_FLASH_LOCK_ID, 0xFF);
107 qla4_83xx_rd_reg(ha, QLA83XX_FLASH_UNLOCK);
108 }
109
qla4_83xx_flash_read_u32(struct scsi_qla_host * ha,uint32_t flash_addr,uint8_t * p_data,int u32_word_count)110 int qla4_83xx_flash_read_u32(struct scsi_qla_host *ha, uint32_t flash_addr,
111 uint8_t *p_data, int u32_word_count)
112 {
113 int i;
114 uint32_t u32_word;
115 uint32_t addr = flash_addr;
116 int ret_val = QLA_SUCCESS;
117
118 ret_val = qla4_83xx_flash_lock(ha);
119 if (ret_val == QLA_ERROR)
120 goto exit_lock_error;
121
122 if (addr & 0x03) {
123 ql4_printk(KERN_ERR, ha, "%s: Illegal addr = 0x%x\n",
124 __func__, addr);
125 ret_val = QLA_ERROR;
126 goto exit_flash_read;
127 }
128
129 for (i = 0; i < u32_word_count; i++) {
130 ret_val = qla4_83xx_wr_reg_indirect(ha,
131 QLA83XX_FLASH_DIRECT_WINDOW,
132 (addr & 0xFFFF0000));
133 if (ret_val == QLA_ERROR) {
134 ql4_printk(KERN_ERR, ha, "%s: failed to write addr 0x%x to FLASH_DIRECT_WINDOW\n!",
135 __func__, addr);
136 goto exit_flash_read;
137 }
138
139 ret_val = qla4_83xx_rd_reg_indirect(ha,
140 QLA83XX_FLASH_DIRECT_DATA(addr),
141 &u32_word);
142 if (ret_val == QLA_ERROR) {
143 ql4_printk(KERN_ERR, ha, "%s: failed to read addr 0x%x!\n",
144 __func__, addr);
145 goto exit_flash_read;
146 }
147
148 *(__le32 *)p_data = le32_to_cpu(u32_word);
149 p_data = p_data + 4;
150 addr = addr + 4;
151 }
152
153 exit_flash_read:
154 qla4_83xx_flash_unlock(ha);
155
156 exit_lock_error:
157 return ret_val;
158 }
159
qla4_83xx_lockless_flash_read_u32(struct scsi_qla_host * ha,uint32_t flash_addr,uint8_t * p_data,int u32_word_count)160 int qla4_83xx_lockless_flash_read_u32(struct scsi_qla_host *ha,
161 uint32_t flash_addr, uint8_t *p_data,
162 int u32_word_count)
163 {
164 uint32_t i;
165 uint32_t u32_word;
166 uint32_t flash_offset;
167 uint32_t addr = flash_addr;
168 int ret_val = QLA_SUCCESS;
169
170 flash_offset = addr & (QLA83XX_FLASH_SECTOR_SIZE - 1);
171
172 if (addr & 0x3) {
173 ql4_printk(KERN_ERR, ha, "%s: Illegal addr = 0x%x\n",
174 __func__, addr);
175 ret_val = QLA_ERROR;
176 goto exit_lockless_read;
177 }
178
179 ret_val = qla4_83xx_wr_reg_indirect(ha, QLA83XX_FLASH_DIRECT_WINDOW,
180 addr);
181 if (ret_val == QLA_ERROR) {
182 ql4_printk(KERN_ERR, ha, "%s: failed to write addr 0x%x to FLASH_DIRECT_WINDOW!\n",
183 __func__, addr);
184 goto exit_lockless_read;
185 }
186
187 /* Check if data is spread across multiple sectors */
188 if ((flash_offset + (u32_word_count * sizeof(uint32_t))) >
189 (QLA83XX_FLASH_SECTOR_SIZE - 1)) {
190
191 /* Multi sector read */
192 for (i = 0; i < u32_word_count; i++) {
193 ret_val = qla4_83xx_rd_reg_indirect(ha,
194 QLA83XX_FLASH_DIRECT_DATA(addr),
195 &u32_word);
196 if (ret_val == QLA_ERROR) {
197 ql4_printk(KERN_ERR, ha, "%s: failed to read addr 0x%x!\n",
198 __func__, addr);
199 goto exit_lockless_read;
200 }
201
202 *(__le32 *)p_data = le32_to_cpu(u32_word);
203 p_data = p_data + 4;
204 addr = addr + 4;
205 flash_offset = flash_offset + 4;
206
207 if (flash_offset > (QLA83XX_FLASH_SECTOR_SIZE - 1)) {
208 /* This write is needed once for each sector */
209 ret_val = qla4_83xx_wr_reg_indirect(ha,
210 QLA83XX_FLASH_DIRECT_WINDOW,
211 addr);
212 if (ret_val == QLA_ERROR) {
213 ql4_printk(KERN_ERR, ha, "%s: failed to write addr 0x%x to FLASH_DIRECT_WINDOW!\n",
214 __func__, addr);
215 goto exit_lockless_read;
216 }
217 flash_offset = 0;
218 }
219 }
220 } else {
221 /* Single sector read */
222 for (i = 0; i < u32_word_count; i++) {
223 ret_val = qla4_83xx_rd_reg_indirect(ha,
224 QLA83XX_FLASH_DIRECT_DATA(addr),
225 &u32_word);
226 if (ret_val == QLA_ERROR) {
227 ql4_printk(KERN_ERR, ha, "%s: failed to read addr 0x%x!\n",
228 __func__, addr);
229 goto exit_lockless_read;
230 }
231
232 *(__le32 *)p_data = le32_to_cpu(u32_word);
233 p_data = p_data + 4;
234 addr = addr + 4;
235 }
236 }
237
238 exit_lockless_read:
239 return ret_val;
240 }
241
qla4_83xx_rom_lock_recovery(struct scsi_qla_host * ha)242 void qla4_83xx_rom_lock_recovery(struct scsi_qla_host *ha)
243 {
244 if (qla4_83xx_flash_lock(ha))
245 ql4_printk(KERN_INFO, ha, "%s: Resetting rom lock\n", __func__);
246
247 /*
248 * We got the lock, or someone else is holding the lock
249 * since we are restting, forcefully unlock
250 */
251 qla4_83xx_flash_unlock(ha);
252 }
253
254 #define INTENT_TO_RECOVER 0x01
255 #define PROCEED_TO_RECOVER 0x02
256
qla4_83xx_lock_recovery(struct scsi_qla_host * ha)257 static int qla4_83xx_lock_recovery(struct scsi_qla_host *ha)
258 {
259
260 uint32_t lock = 0, lockid;
261 int ret_val = QLA_ERROR;
262
263 lockid = ha->isp_ops->rd_reg_direct(ha, QLA83XX_DRV_LOCKRECOVERY);
264
265 /* Check for other Recovery in progress, go wait */
266 if ((lockid & 0x3) != 0)
267 goto exit_lock_recovery;
268
269 /* Intent to Recover */
270 ha->isp_ops->wr_reg_direct(ha, QLA83XX_DRV_LOCKRECOVERY,
271 (ha->func_num << 2) | INTENT_TO_RECOVER);
272
273 msleep(200);
274
275 /* Check Intent to Recover is advertised */
276 lockid = ha->isp_ops->rd_reg_direct(ha, QLA83XX_DRV_LOCKRECOVERY);
277 if ((lockid & 0x3C) != (ha->func_num << 2))
278 goto exit_lock_recovery;
279
280 ql4_printk(KERN_INFO, ha, "%s: IDC Lock recovery initiated for func %d\n",
281 __func__, ha->func_num);
282
283 /* Proceed to Recover */
284 ha->isp_ops->wr_reg_direct(ha, QLA83XX_DRV_LOCKRECOVERY,
285 (ha->func_num << 2) | PROCEED_TO_RECOVER);
286
287 /* Force Unlock */
288 ha->isp_ops->wr_reg_direct(ha, QLA83XX_DRV_LOCK_ID, 0xFF);
289 ha->isp_ops->rd_reg_direct(ha, QLA83XX_DRV_UNLOCK);
290
291 /* Clear bits 0-5 in IDC_RECOVERY register*/
292 ha->isp_ops->wr_reg_direct(ha, QLA83XX_DRV_LOCKRECOVERY, 0);
293
294 /* Get lock */
295 lock = ha->isp_ops->rd_reg_direct(ha, QLA83XX_DRV_LOCK);
296 if (lock) {
297 lockid = ha->isp_ops->rd_reg_direct(ha, QLA83XX_DRV_LOCK_ID);
298 lockid = ((lockid + (1 << 8)) & ~0xFF) | ha->func_num;
299 ha->isp_ops->wr_reg_direct(ha, QLA83XX_DRV_LOCK_ID, lockid);
300 ret_val = QLA_SUCCESS;
301 }
302
303 exit_lock_recovery:
304 return ret_val;
305 }
306
307 #define QLA83XX_DRV_LOCK_MSLEEP 200
308
qla4_83xx_drv_lock(struct scsi_qla_host * ha)309 int qla4_83xx_drv_lock(struct scsi_qla_host *ha)
310 {
311 int timeout = 0;
312 uint32_t status = 0;
313 int ret_val = QLA_SUCCESS;
314 uint32_t first_owner = 0;
315 uint32_t tmo_owner = 0;
316 uint32_t lock_id;
317 uint32_t func_num;
318 uint32_t lock_cnt;
319
320 while (status == 0) {
321 status = qla4_83xx_rd_reg(ha, QLA83XX_DRV_LOCK);
322 if (status) {
323 /* Increment Counter (8-31) and update func_num (0-7) on
324 * getting a successful lock */
325 lock_id = qla4_83xx_rd_reg(ha, QLA83XX_DRV_LOCK_ID);
326 lock_id = ((lock_id + (1 << 8)) & ~0xFF) | ha->func_num;
327 qla4_83xx_wr_reg(ha, QLA83XX_DRV_LOCK_ID, lock_id);
328 break;
329 }
330
331 if (timeout == 0)
332 /* Save counter + ID of function holding the lock for
333 * first failure */
334 first_owner = ha->isp_ops->rd_reg_direct(ha,
335 QLA83XX_DRV_LOCK_ID);
336
337 if (++timeout >=
338 (QLA83XX_DRV_LOCK_TIMEOUT / QLA83XX_DRV_LOCK_MSLEEP)) {
339 tmo_owner = qla4_83xx_rd_reg(ha, QLA83XX_DRV_LOCK_ID);
340 func_num = tmo_owner & 0xFF;
341 lock_cnt = tmo_owner >> 8;
342 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",
343 __func__, ha->func_num, func_num, lock_cnt,
344 (first_owner & 0xFF));
345
346 if (first_owner != tmo_owner) {
347 /* Some other driver got lock, OR same driver
348 * got lock again (counter value changed), when
349 * we were waiting for lock.
350 * Retry for another 2 sec */
351 ql4_printk(KERN_INFO, ha, "%s: IDC lock failed for func %d\n",
352 __func__, ha->func_num);
353 timeout = 0;
354 } else {
355 /* Same driver holding lock > 2sec.
356 * Force Recovery */
357 ret_val = qla4_83xx_lock_recovery(ha);
358 if (ret_val == QLA_SUCCESS) {
359 /* Recovered and got lock */
360 ql4_printk(KERN_INFO, ha, "%s: IDC lock Recovery by %d successful\n",
361 __func__, ha->func_num);
362 break;
363 }
364 /* Recovery Failed, some other function
365 * has the lock, wait for 2secs and retry */
366 ql4_printk(KERN_INFO, ha, "%s: IDC lock Recovery by %d failed, Retrying timeout\n",
367 __func__, ha->func_num);
368 timeout = 0;
369 }
370 }
371 msleep(QLA83XX_DRV_LOCK_MSLEEP);
372 }
373
374 return ret_val;
375 }
376
qla4_83xx_drv_unlock(struct scsi_qla_host * ha)377 void qla4_83xx_drv_unlock(struct scsi_qla_host *ha)
378 {
379 int id;
380
381 id = qla4_83xx_rd_reg(ha, QLA83XX_DRV_LOCK_ID);
382
383 if ((id & 0xFF) != ha->func_num) {
384 ql4_printk(KERN_ERR, ha, "%s: IDC Unlock by %d failed, lock owner is %d\n",
385 __func__, ha->func_num, (id & 0xFF));
386 return;
387 }
388
389 /* Keep lock counter value, update the ha->func_num to 0xFF */
390 qla4_83xx_wr_reg(ha, QLA83XX_DRV_LOCK_ID, (id | 0xFF));
391 qla4_83xx_rd_reg(ha, QLA83XX_DRV_UNLOCK);
392 }
393
qla4_83xx_set_idc_dontreset(struct scsi_qla_host * ha)394 void qla4_83xx_set_idc_dontreset(struct scsi_qla_host *ha)
395 {
396 uint32_t idc_ctrl;
397
398 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
399 idc_ctrl |= DONTRESET_BIT0;
400 qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL, idc_ctrl);
401 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: idc_ctrl = %d\n", __func__,
402 idc_ctrl));
403 }
404
qla4_83xx_clear_idc_dontreset(struct scsi_qla_host * ha)405 void qla4_83xx_clear_idc_dontreset(struct scsi_qla_host *ha)
406 {
407 uint32_t idc_ctrl;
408
409 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
410 idc_ctrl &= ~DONTRESET_BIT0;
411 qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL, idc_ctrl);
412 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: idc_ctrl = %d\n", __func__,
413 idc_ctrl));
414 }
415
qla4_83xx_idc_dontreset(struct scsi_qla_host * ha)416 int qla4_83xx_idc_dontreset(struct scsi_qla_host *ha)
417 {
418 uint32_t idc_ctrl;
419
420 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
421 return idc_ctrl & DONTRESET_BIT0;
422 }
423
424 /*-------------------------IDC State Machine ---------------------*/
425
426 enum {
427 UNKNOWN_CLASS = 0,
428 NIC_CLASS,
429 FCOE_CLASS,
430 ISCSI_CLASS
431 };
432
433 struct device_info {
434 int func_num;
435 int device_type;
436 int port_num;
437 };
438
qla4_83xx_can_perform_reset(struct scsi_qla_host * ha)439 int qla4_83xx_can_perform_reset(struct scsi_qla_host *ha)
440 {
441 uint32_t drv_active;
442 uint32_t dev_part, dev_part1, dev_part2;
443 int i;
444 struct device_info device_map[16];
445 int func_nibble;
446 int nibble;
447 int nic_present = 0;
448 int iscsi_present = 0;
449 int iscsi_func_low = 0;
450
451 /* Use the dev_partition register to determine the PCI function number
452 * and then check drv_active register to see which driver is loaded */
453 dev_part1 = qla4_83xx_rd_reg(ha,
454 ha->reg_tbl[QLA8XXX_CRB_DEV_PART_INFO]);
455 dev_part2 = qla4_83xx_rd_reg(ha, QLA83XX_CRB_DEV_PART_INFO2);
456 drv_active = qla4_83xx_rd_reg(ha, ha->reg_tbl[QLA8XXX_CRB_DRV_ACTIVE]);
457
458 /* Each function has 4 bits in dev_partition Info register,
459 * Lower 2 bits - device type, Upper 2 bits - physical port number */
460 dev_part = dev_part1;
461 for (i = nibble = 0; i <= 15; i++, nibble++) {
462 func_nibble = dev_part & (0xF << (nibble * 4));
463 func_nibble >>= (nibble * 4);
464 device_map[i].func_num = i;
465 device_map[i].device_type = func_nibble & 0x3;
466 device_map[i].port_num = func_nibble & 0xC;
467
468 if (device_map[i].device_type == NIC_CLASS) {
469 if (drv_active & (1 << device_map[i].func_num)) {
470 nic_present++;
471 break;
472 }
473 } else if (device_map[i].device_type == ISCSI_CLASS) {
474 if (drv_active & (1 << device_map[i].func_num)) {
475 if (!iscsi_present ||
476 (iscsi_present &&
477 (iscsi_func_low > device_map[i].func_num)))
478 iscsi_func_low = device_map[i].func_num;
479
480 iscsi_present++;
481 }
482 }
483
484 /* For function_num[8..15] get info from dev_part2 register */
485 if (nibble == 7) {
486 nibble = 0;
487 dev_part = dev_part2;
488 }
489 }
490
491 /* NIC, iSCSI and FCOE are the Reset owners based on order, NIC gets
492 * precedence over iSCSI and FCOE and iSCSI over FCOE, based on drivers
493 * present. */
494 if (!nic_present && (ha->func_num == iscsi_func_low)) {
495 DEBUG2(ql4_printk(KERN_INFO, ha,
496 "%s: can reset - NIC not present and lower iSCSI function is %d\n",
497 __func__, ha->func_num));
498 return 1;
499 }
500
501 return 0;
502 }
503
504 /**
505 * qla4_83xx_need_reset_handler - Code to start reset sequence
506 * @ha: pointer to adapter structure
507 *
508 * Note: IDC lock must be held upon entry
509 **/
qla4_83xx_need_reset_handler(struct scsi_qla_host * ha)510 void qla4_83xx_need_reset_handler(struct scsi_qla_host *ha)
511 {
512 uint32_t dev_state, drv_state, drv_active;
513 unsigned long reset_timeout, dev_init_timeout;
514
515 ql4_printk(KERN_INFO, ha, "%s: Performing ISP error recovery\n",
516 __func__);
517
518 if (!test_bit(AF_8XXX_RST_OWNER, &ha->flags)) {
519 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: reset acknowledged\n",
520 __func__));
521 qla4_8xxx_set_rst_ready(ha);
522
523 /* Non-reset owners ACK Reset and wait for device INIT state
524 * as part of Reset Recovery by Reset Owner */
525 dev_init_timeout = jiffies + (ha->nx_dev_init_timeout * HZ);
526
527 do {
528 if (time_after_eq(jiffies, dev_init_timeout)) {
529 ql4_printk(KERN_INFO, ha, "%s: Non Reset owner dev init timeout\n",
530 __func__);
531 break;
532 }
533
534 ha->isp_ops->idc_unlock(ha);
535 msleep(1000);
536 ha->isp_ops->idc_lock(ha);
537
538 dev_state = qla4_8xxx_rd_direct(ha,
539 QLA8XXX_CRB_DEV_STATE);
540 } while (dev_state == QLA8XXX_DEV_NEED_RESET);
541 } else {
542 qla4_8xxx_set_rst_ready(ha);
543 reset_timeout = jiffies + (ha->nx_reset_timeout * HZ);
544 drv_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DRV_STATE);
545 drv_active = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DRV_ACTIVE);
546
547 ql4_printk(KERN_INFO, ha, "%s: drv_state = 0x%x, drv_active = 0x%x\n",
548 __func__, drv_state, drv_active);
549
550 while (drv_state != drv_active) {
551 if (time_after_eq(jiffies, reset_timeout)) {
552 ql4_printk(KERN_INFO, ha, "%s: %s: RESET TIMEOUT! drv_state: 0x%08x, drv_active: 0x%08x\n",
553 __func__, DRIVER_NAME, drv_state,
554 drv_active);
555 break;
556 }
557
558 ha->isp_ops->idc_unlock(ha);
559 msleep(1000);
560 ha->isp_ops->idc_lock(ha);
561
562 drv_state = qla4_8xxx_rd_direct(ha,
563 QLA8XXX_CRB_DRV_STATE);
564 drv_active = qla4_8xxx_rd_direct(ha,
565 QLA8XXX_CRB_DRV_ACTIVE);
566 }
567
568 if (drv_state != drv_active) {
569 ql4_printk(KERN_INFO, ha, "%s: Reset_owner turning off drv_active of non-acking function 0x%x\n",
570 __func__, (drv_active ^ drv_state));
571 drv_active = drv_active & drv_state;
572 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_ACTIVE,
573 drv_active);
574 }
575
576 clear_bit(AF_8XXX_RST_OWNER, &ha->flags);
577 /* Start Reset Recovery */
578 qla4_8xxx_device_bootstrap(ha);
579 }
580 }
581
qla4_83xx_get_idc_param(struct scsi_qla_host * ha)582 void qla4_83xx_get_idc_param(struct scsi_qla_host *ha)
583 {
584 uint32_t idc_params, ret_val;
585
586 ret_val = qla4_83xx_flash_read_u32(ha, QLA83XX_IDC_PARAM_ADDR,
587 (uint8_t *)&idc_params, 1);
588 if (ret_val == QLA_SUCCESS) {
589 ha->nx_dev_init_timeout = idc_params & 0xFFFF;
590 ha->nx_reset_timeout = (idc_params >> 16) & 0xFFFF;
591 } else {
592 ha->nx_dev_init_timeout = ROM_DEV_INIT_TIMEOUT;
593 ha->nx_reset_timeout = ROM_DRV_RESET_ACK_TIMEOUT;
594 }
595
596 DEBUG2(ql4_printk(KERN_DEBUG, ha,
597 "%s: ha->nx_dev_init_timeout = %d, ha->nx_reset_timeout = %d\n",
598 __func__, ha->nx_dev_init_timeout,
599 ha->nx_reset_timeout));
600 }
601
602 /*-------------------------Reset Sequence Functions-----------------------*/
603
qla4_83xx_dump_reset_seq_hdr(struct scsi_qla_host * ha)604 static void qla4_83xx_dump_reset_seq_hdr(struct scsi_qla_host *ha)
605 {
606 uint8_t *phdr;
607
608 if (!ha->reset_tmplt.buff) {
609 ql4_printk(KERN_ERR, ha, "%s: Error: Invalid reset_seq_template\n",
610 __func__);
611 return;
612 }
613
614 phdr = ha->reset_tmplt.buff;
615
616 DEBUG2(ql4_printk(KERN_INFO, ha,
617 "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",
618 *phdr, *(phdr+1), *(phdr+2), *(phdr+3), *(phdr+4),
619 *(phdr+5), *(phdr+6), *(phdr+7), *(phdr + 8),
620 *(phdr+9), *(phdr+10), *(phdr+11), *(phdr+12),
621 *(phdr+13), *(phdr+14), *(phdr+15)));
622 }
623
qla4_83xx_copy_bootloader(struct scsi_qla_host * ha)624 static int qla4_83xx_copy_bootloader(struct scsi_qla_host *ha)
625 {
626 uint8_t *p_cache;
627 uint32_t src, count, size;
628 uint64_t dest;
629 int ret_val = QLA_SUCCESS;
630
631 src = QLA83XX_BOOTLOADER_FLASH_ADDR;
632 dest = qla4_83xx_rd_reg(ha, QLA83XX_BOOTLOADER_ADDR);
633 size = qla4_83xx_rd_reg(ha, QLA83XX_BOOTLOADER_SIZE);
634
635 /* 128 bit alignment check */
636 if (size & 0xF)
637 size = (size + 16) & ~0xF;
638
639 /* 16 byte count */
640 count = size/16;
641
642 p_cache = vmalloc(size);
643 if (p_cache == NULL) {
644 ql4_printk(KERN_ERR, ha, "%s: Failed to allocate memory for boot loader cache\n",
645 __func__);
646 ret_val = QLA_ERROR;
647 goto exit_copy_bootloader;
648 }
649
650 ret_val = qla4_83xx_lockless_flash_read_u32(ha, src, p_cache,
651 size / sizeof(uint32_t));
652 if (ret_val == QLA_ERROR) {
653 ql4_printk(KERN_ERR, ha, "%s: Error reading firmware from flash\n",
654 __func__);
655 goto exit_copy_error;
656 }
657 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Read firmware from flash\n",
658 __func__));
659
660 /* 128 bit/16 byte write to MS memory */
661 ret_val = qla4_8xxx_ms_mem_write_128b(ha, dest, (uint32_t *)p_cache,
662 count);
663 if (ret_val == QLA_ERROR) {
664 ql4_printk(KERN_ERR, ha, "%s: Error writing firmware to MS\n",
665 __func__);
666 goto exit_copy_error;
667 }
668
669 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Wrote firmware size %d to MS\n",
670 __func__, size));
671
672 exit_copy_error:
673 vfree(p_cache);
674
675 exit_copy_bootloader:
676 return ret_val;
677 }
678
qla4_83xx_check_cmd_peg_status(struct scsi_qla_host * ha)679 static int qla4_83xx_check_cmd_peg_status(struct scsi_qla_host *ha)
680 {
681 uint32_t val, ret_val = QLA_ERROR;
682 int retries = CRB_CMDPEG_CHECK_RETRY_COUNT;
683
684 do {
685 val = qla4_83xx_rd_reg(ha, QLA83XX_CMDPEG_STATE);
686 if (val == PHAN_INITIALIZE_COMPLETE) {
687 DEBUG2(ql4_printk(KERN_INFO, ha,
688 "%s: Command Peg initialization complete. State=0x%x\n",
689 __func__, val));
690 ret_val = QLA_SUCCESS;
691 break;
692 }
693 msleep(CRB_CMDPEG_CHECK_DELAY);
694 } while (--retries);
695
696 return ret_val;
697 }
698
699 /**
700 * qla4_83xx_poll_reg - Poll the given CRB addr for duration msecs till
701 * value read ANDed with test_mask is equal to test_result.
702 *
703 * @ha : Pointer to adapter structure
704 * @addr : CRB register address
705 * @duration : Poll for total of "duration" msecs
706 * @test_mask : Mask value read with "test_mask"
707 * @test_result : Compare (value&test_mask) with test_result.
708 **/
qla4_83xx_poll_reg(struct scsi_qla_host * ha,uint32_t addr,int duration,uint32_t test_mask,uint32_t test_result)709 static int qla4_83xx_poll_reg(struct scsi_qla_host *ha, uint32_t addr,
710 int duration, uint32_t test_mask,
711 uint32_t test_result)
712 {
713 uint32_t value;
714 uint8_t retries;
715 int ret_val = QLA_SUCCESS;
716
717 ret_val = qla4_83xx_rd_reg_indirect(ha, addr, &value);
718 if (ret_val == QLA_ERROR)
719 goto exit_poll_reg;
720
721 retries = duration / 10;
722 do {
723 if ((value & test_mask) != test_result) {
724 msleep(duration / 10);
725 ret_val = qla4_83xx_rd_reg_indirect(ha, addr, &value);
726 if (ret_val == QLA_ERROR)
727 goto exit_poll_reg;
728
729 ret_val = QLA_ERROR;
730 } else {
731 ret_val = QLA_SUCCESS;
732 break;
733 }
734 } while (retries--);
735
736 exit_poll_reg:
737 if (ret_val == QLA_ERROR) {
738 ha->reset_tmplt.seq_error++;
739 ql4_printk(KERN_ERR, ha, "%s: Poll Failed: 0x%08x 0x%08x 0x%08x\n",
740 __func__, value, test_mask, test_result);
741 }
742
743 return ret_val;
744 }
745
qla4_83xx_reset_seq_checksum_test(struct scsi_qla_host * ha)746 static int qla4_83xx_reset_seq_checksum_test(struct scsi_qla_host *ha)
747 {
748 uint32_t sum = 0;
749 uint16_t *buff = (uint16_t *)ha->reset_tmplt.buff;
750 int u16_count = ha->reset_tmplt.hdr->size / sizeof(uint16_t);
751 int ret_val;
752
753 while (u16_count-- > 0)
754 sum += *buff++;
755
756 while (sum >> 16)
757 sum = (sum & 0xFFFF) + (sum >> 16);
758
759 /* checksum of 0 indicates a valid template */
760 if (~sum) {
761 ret_val = QLA_SUCCESS;
762 } else {
763 ql4_printk(KERN_ERR, ha, "%s: Reset seq checksum failed\n",
764 __func__);
765 ret_val = QLA_ERROR;
766 }
767
768 return ret_val;
769 }
770
771 /**
772 * qla4_83xx_read_reset_template - Read Reset Template from Flash
773 * @ha: Pointer to adapter structure
774 **/
qla4_83xx_read_reset_template(struct scsi_qla_host * ha)775 void qla4_83xx_read_reset_template(struct scsi_qla_host *ha)
776 {
777 uint8_t *p_buff;
778 uint32_t addr, tmplt_hdr_def_size, tmplt_hdr_size;
779 uint32_t ret_val;
780
781 ha->reset_tmplt.seq_error = 0;
782 ha->reset_tmplt.buff = vmalloc(QLA83XX_RESTART_TEMPLATE_SIZE);
783 if (ha->reset_tmplt.buff == NULL) {
784 ql4_printk(KERN_ERR, ha, "%s: Failed to allocate reset template resources\n",
785 __func__);
786 goto exit_read_reset_template;
787 }
788
789 p_buff = ha->reset_tmplt.buff;
790 addr = QLA83XX_RESET_TEMPLATE_ADDR;
791
792 tmplt_hdr_def_size = sizeof(struct qla4_83xx_reset_template_hdr) /
793 sizeof(uint32_t);
794
795 DEBUG2(ql4_printk(KERN_INFO, ha,
796 "%s: Read template hdr size %d from Flash\n",
797 __func__, tmplt_hdr_def_size));
798
799 /* Copy template header from flash */
800 ret_val = qla4_83xx_flash_read_u32(ha, addr, p_buff,
801 tmplt_hdr_def_size);
802 if (ret_val != QLA_SUCCESS) {
803 ql4_printk(KERN_ERR, ha, "%s: Failed to read reset template\n",
804 __func__);
805 goto exit_read_template_error;
806 }
807
808 ha->reset_tmplt.hdr =
809 (struct qla4_83xx_reset_template_hdr *)ha->reset_tmplt.buff;
810
811 /* Validate the template header size and signature */
812 tmplt_hdr_size = ha->reset_tmplt.hdr->hdr_size/sizeof(uint32_t);
813 if ((tmplt_hdr_size != tmplt_hdr_def_size) ||
814 (ha->reset_tmplt.hdr->signature != RESET_TMPLT_HDR_SIGNATURE)) {
815 ql4_printk(KERN_ERR, ha, "%s: Template Header size %d is invalid, tmplt_hdr_def_size %d\n",
816 __func__, tmplt_hdr_size, tmplt_hdr_def_size);
817 goto exit_read_template_error;
818 }
819
820 addr = QLA83XX_RESET_TEMPLATE_ADDR + ha->reset_tmplt.hdr->hdr_size;
821 p_buff = ha->reset_tmplt.buff + ha->reset_tmplt.hdr->hdr_size;
822 tmplt_hdr_def_size = (ha->reset_tmplt.hdr->size -
823 ha->reset_tmplt.hdr->hdr_size) / sizeof(uint32_t);
824
825 DEBUG2(ql4_printk(KERN_INFO, ha,
826 "%s: Read rest of the template size %d\n",
827 __func__, ha->reset_tmplt.hdr->size));
828
829 /* Copy rest of the template */
830 ret_val = qla4_83xx_flash_read_u32(ha, addr, p_buff,
831 tmplt_hdr_def_size);
832 if (ret_val != QLA_SUCCESS) {
833 ql4_printk(KERN_ERR, ha, "%s: Failed to read reset template\n",
834 __func__);
835 goto exit_read_template_error;
836 }
837
838 /* Integrity check */
839 if (qla4_83xx_reset_seq_checksum_test(ha)) {
840 ql4_printk(KERN_ERR, ha, "%s: Reset Seq checksum failed!\n",
841 __func__);
842 goto exit_read_template_error;
843 }
844 DEBUG2(ql4_printk(KERN_INFO, ha,
845 "%s: Reset Seq checksum passed, Get stop, start and init seq offsets\n",
846 __func__));
847
848 /* Get STOP, START, INIT sequence offsets */
849 ha->reset_tmplt.init_offset = ha->reset_tmplt.buff +
850 ha->reset_tmplt.hdr->init_seq_offset;
851 ha->reset_tmplt.start_offset = ha->reset_tmplt.buff +
852 ha->reset_tmplt.hdr->start_seq_offset;
853 ha->reset_tmplt.stop_offset = ha->reset_tmplt.buff +
854 ha->reset_tmplt.hdr->hdr_size;
855 qla4_83xx_dump_reset_seq_hdr(ha);
856
857 goto exit_read_reset_template;
858
859 exit_read_template_error:
860 vfree(ha->reset_tmplt.buff);
861
862 exit_read_reset_template:
863 return;
864 }
865
866 /**
867 * qla4_83xx_read_write_crb_reg - Read from raddr and write value to waddr.
868 *
869 * @ha : Pointer to adapter structure
870 * @raddr : CRB address to read from
871 * @waddr : CRB address to write to
872 **/
qla4_83xx_read_write_crb_reg(struct scsi_qla_host * ha,uint32_t raddr,uint32_t waddr)873 static void qla4_83xx_read_write_crb_reg(struct scsi_qla_host *ha,
874 uint32_t raddr, uint32_t waddr)
875 {
876 uint32_t value;
877
878 qla4_83xx_rd_reg_indirect(ha, raddr, &value);
879 qla4_83xx_wr_reg_indirect(ha, waddr, value);
880 }
881
882 /**
883 * qla4_83xx_rmw_crb_reg - Read Modify Write crb register
884 *
885 * This function read value from raddr, AND with test_mask,
886 * Shift Left,Right/OR/XOR with values RMW header and write value to waddr.
887 *
888 * @ha : Pointer to adapter structure
889 * @raddr : CRB address to read from
890 * @waddr : CRB address to write to
891 * @p_rmw_hdr : header with shift/or/xor values.
892 **/
qla4_83xx_rmw_crb_reg(struct scsi_qla_host * ha,uint32_t raddr,uint32_t waddr,struct qla4_83xx_rmw * p_rmw_hdr)893 static void qla4_83xx_rmw_crb_reg(struct scsi_qla_host *ha, uint32_t raddr,
894 uint32_t waddr,
895 struct qla4_83xx_rmw *p_rmw_hdr)
896 {
897 uint32_t value;
898
899 if (p_rmw_hdr->index_a)
900 value = ha->reset_tmplt.array[p_rmw_hdr->index_a];
901 else
902 qla4_83xx_rd_reg_indirect(ha, raddr, &value);
903
904 value &= p_rmw_hdr->test_mask;
905 value <<= p_rmw_hdr->shl;
906 value >>= p_rmw_hdr->shr;
907 value |= p_rmw_hdr->or_value;
908 value ^= p_rmw_hdr->xor_value;
909
910 qla4_83xx_wr_reg_indirect(ha, waddr, value);
911
912 return;
913 }
914
qla4_83xx_write_list(struct scsi_qla_host * ha,struct qla4_83xx_reset_entry_hdr * p_hdr)915 static void qla4_83xx_write_list(struct scsi_qla_host *ha,
916 struct qla4_83xx_reset_entry_hdr *p_hdr)
917 {
918 struct qla4_83xx_entry *p_entry;
919 uint32_t i;
920
921 p_entry = (struct qla4_83xx_entry *)
922 ((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
923
924 for (i = 0; i < p_hdr->count; i++, p_entry++) {
925 qla4_83xx_wr_reg_indirect(ha, p_entry->arg1, p_entry->arg2);
926 if (p_hdr->delay)
927 udelay((uint32_t)(p_hdr->delay));
928 }
929 }
930
qla4_83xx_read_write_list(struct scsi_qla_host * ha,struct qla4_83xx_reset_entry_hdr * p_hdr)931 static void qla4_83xx_read_write_list(struct scsi_qla_host *ha,
932 struct qla4_83xx_reset_entry_hdr *p_hdr)
933 {
934 struct qla4_83xx_entry *p_entry;
935 uint32_t i;
936
937 p_entry = (struct qla4_83xx_entry *)
938 ((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
939
940 for (i = 0; i < p_hdr->count; i++, p_entry++) {
941 qla4_83xx_read_write_crb_reg(ha, p_entry->arg1, p_entry->arg2);
942 if (p_hdr->delay)
943 udelay((uint32_t)(p_hdr->delay));
944 }
945 }
946
qla4_83xx_poll_list(struct scsi_qla_host * ha,struct qla4_83xx_reset_entry_hdr * p_hdr)947 static void qla4_83xx_poll_list(struct scsi_qla_host *ha,
948 struct qla4_83xx_reset_entry_hdr *p_hdr)
949 {
950 long delay;
951 struct qla4_83xx_entry *p_entry;
952 struct qla4_83xx_poll *p_poll;
953 uint32_t i;
954 uint32_t value;
955
956 p_poll = (struct qla4_83xx_poll *)
957 ((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
958
959 /* Entries start after 8 byte qla4_83xx_poll, poll header contains
960 * the test_mask, test_value. */
961 p_entry = (struct qla4_83xx_entry *)((char *)p_poll +
962 sizeof(struct qla4_83xx_poll));
963
964 delay = (long)p_hdr->delay;
965 if (!delay) {
966 for (i = 0; i < p_hdr->count; i++, p_entry++) {
967 qla4_83xx_poll_reg(ha, p_entry->arg1, delay,
968 p_poll->test_mask,
969 p_poll->test_value);
970 }
971 } else {
972 for (i = 0; i < p_hdr->count; i++, p_entry++) {
973 if (qla4_83xx_poll_reg(ha, p_entry->arg1, delay,
974 p_poll->test_mask,
975 p_poll->test_value)) {
976 qla4_83xx_rd_reg_indirect(ha, p_entry->arg1,
977 &value);
978 qla4_83xx_rd_reg_indirect(ha, p_entry->arg2,
979 &value);
980 }
981 }
982 }
983 }
984
qla4_83xx_poll_write_list(struct scsi_qla_host * ha,struct qla4_83xx_reset_entry_hdr * p_hdr)985 static void qla4_83xx_poll_write_list(struct scsi_qla_host *ha,
986 struct qla4_83xx_reset_entry_hdr *p_hdr)
987 {
988 long delay;
989 struct qla4_83xx_quad_entry *p_entry;
990 struct qla4_83xx_poll *p_poll;
991 uint32_t i;
992
993 p_poll = (struct qla4_83xx_poll *)
994 ((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
995 p_entry = (struct qla4_83xx_quad_entry *)
996 ((char *)p_poll + sizeof(struct qla4_83xx_poll));
997 delay = (long)p_hdr->delay;
998
999 for (i = 0; i < p_hdr->count; i++, p_entry++) {
1000 qla4_83xx_wr_reg_indirect(ha, p_entry->dr_addr,
1001 p_entry->dr_value);
1002 qla4_83xx_wr_reg_indirect(ha, p_entry->ar_addr,
1003 p_entry->ar_value);
1004 if (delay) {
1005 if (qla4_83xx_poll_reg(ha, p_entry->ar_addr, delay,
1006 p_poll->test_mask,
1007 p_poll->test_value)) {
1008 DEBUG2(ql4_printk(KERN_INFO, ha,
1009 "%s: Timeout Error: poll list, item_num %d, entry_num %d\n",
1010 __func__, i,
1011 ha->reset_tmplt.seq_index));
1012 }
1013 }
1014 }
1015 }
1016
qla4_83xx_read_modify_write(struct scsi_qla_host * ha,struct qla4_83xx_reset_entry_hdr * p_hdr)1017 static void qla4_83xx_read_modify_write(struct scsi_qla_host *ha,
1018 struct qla4_83xx_reset_entry_hdr *p_hdr)
1019 {
1020 struct qla4_83xx_entry *p_entry;
1021 struct qla4_83xx_rmw *p_rmw_hdr;
1022 uint32_t i;
1023
1024 p_rmw_hdr = (struct qla4_83xx_rmw *)
1025 ((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
1026 p_entry = (struct qla4_83xx_entry *)
1027 ((char *)p_rmw_hdr + sizeof(struct qla4_83xx_rmw));
1028
1029 for (i = 0; i < p_hdr->count; i++, p_entry++) {
1030 qla4_83xx_rmw_crb_reg(ha, p_entry->arg1, p_entry->arg2,
1031 p_rmw_hdr);
1032 if (p_hdr->delay)
1033 udelay((uint32_t)(p_hdr->delay));
1034 }
1035 }
1036
qla4_83xx_pause(struct scsi_qla_host * ha,struct qla4_83xx_reset_entry_hdr * p_hdr)1037 static void qla4_83xx_pause(struct scsi_qla_host *ha,
1038 struct qla4_83xx_reset_entry_hdr *p_hdr)
1039 {
1040 if (p_hdr->delay)
1041 mdelay((uint32_t)((long)p_hdr->delay));
1042 }
1043
qla4_83xx_poll_read_list(struct scsi_qla_host * ha,struct qla4_83xx_reset_entry_hdr * p_hdr)1044 static void qla4_83xx_poll_read_list(struct scsi_qla_host *ha,
1045 struct qla4_83xx_reset_entry_hdr *p_hdr)
1046 {
1047 long delay;
1048 int index;
1049 struct qla4_83xx_quad_entry *p_entry;
1050 struct qla4_83xx_poll *p_poll;
1051 uint32_t i;
1052 uint32_t value;
1053
1054 p_poll = (struct qla4_83xx_poll *)
1055 ((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
1056 p_entry = (struct qla4_83xx_quad_entry *)
1057 ((char *)p_poll + sizeof(struct qla4_83xx_poll));
1058 delay = (long)p_hdr->delay;
1059
1060 for (i = 0; i < p_hdr->count; i++, p_entry++) {
1061 qla4_83xx_wr_reg_indirect(ha, p_entry->ar_addr,
1062 p_entry->ar_value);
1063 if (delay) {
1064 if (qla4_83xx_poll_reg(ha, p_entry->ar_addr, delay,
1065 p_poll->test_mask,
1066 p_poll->test_value)) {
1067 DEBUG2(ql4_printk(KERN_INFO, ha,
1068 "%s: Timeout Error: poll list, Item_num %d, entry_num %d\n",
1069 __func__, i,
1070 ha->reset_tmplt.seq_index));
1071 } else {
1072 index = ha->reset_tmplt.array_index;
1073 qla4_83xx_rd_reg_indirect(ha, p_entry->dr_addr,
1074 &value);
1075 ha->reset_tmplt.array[index++] = value;
1076
1077 if (index == QLA83XX_MAX_RESET_SEQ_ENTRIES)
1078 ha->reset_tmplt.array_index = 1;
1079 }
1080 }
1081 }
1082 }
1083
qla4_83xx_seq_end(struct scsi_qla_host * ha,struct qla4_83xx_reset_entry_hdr * p_hdr)1084 static void qla4_83xx_seq_end(struct scsi_qla_host *ha,
1085 struct qla4_83xx_reset_entry_hdr *p_hdr)
1086 {
1087 ha->reset_tmplt.seq_end = 1;
1088 }
1089
qla4_83xx_template_end(struct scsi_qla_host * ha,struct qla4_83xx_reset_entry_hdr * p_hdr)1090 static void qla4_83xx_template_end(struct scsi_qla_host *ha,
1091 struct qla4_83xx_reset_entry_hdr *p_hdr)
1092 {
1093 ha->reset_tmplt.template_end = 1;
1094
1095 if (ha->reset_tmplt.seq_error == 0) {
1096 DEBUG2(ql4_printk(KERN_INFO, ha,
1097 "%s: Reset sequence completed SUCCESSFULLY.\n",
1098 __func__));
1099 } else {
1100 ql4_printk(KERN_ERR, ha, "%s: Reset sequence completed with some timeout errors.\n",
1101 __func__);
1102 }
1103 }
1104
1105 /**
1106 * qla4_83xx_process_reset_template - Process reset template.
1107 *
1108 * Process all entries in reset template till entry with SEQ_END opcode,
1109 * which indicates end of the reset template processing. Each entry has a
1110 * Reset Entry header, entry opcode/command, with size of the entry, number
1111 * of entries in sub-sequence and delay in microsecs or timeout in millisecs.
1112 *
1113 * @ha : Pointer to adapter structure
1114 * @p_buff : Common reset entry header.
1115 **/
qla4_83xx_process_reset_template(struct scsi_qla_host * ha,char * p_buff)1116 static void qla4_83xx_process_reset_template(struct scsi_qla_host *ha,
1117 char *p_buff)
1118 {
1119 int index, entries;
1120 struct qla4_83xx_reset_entry_hdr *p_hdr;
1121 char *p_entry = p_buff;
1122
1123 ha->reset_tmplt.seq_end = 0;
1124 ha->reset_tmplt.template_end = 0;
1125 entries = ha->reset_tmplt.hdr->entries;
1126 index = ha->reset_tmplt.seq_index;
1127
1128 for (; (!ha->reset_tmplt.seq_end) && (index < entries); index++) {
1129
1130 p_hdr = (struct qla4_83xx_reset_entry_hdr *)p_entry;
1131 switch (p_hdr->cmd) {
1132 case OPCODE_NOP:
1133 break;
1134 case OPCODE_WRITE_LIST:
1135 qla4_83xx_write_list(ha, p_hdr);
1136 break;
1137 case OPCODE_READ_WRITE_LIST:
1138 qla4_83xx_read_write_list(ha, p_hdr);
1139 break;
1140 case OPCODE_POLL_LIST:
1141 qla4_83xx_poll_list(ha, p_hdr);
1142 break;
1143 case OPCODE_POLL_WRITE_LIST:
1144 qla4_83xx_poll_write_list(ha, p_hdr);
1145 break;
1146 case OPCODE_READ_MODIFY_WRITE:
1147 qla4_83xx_read_modify_write(ha, p_hdr);
1148 break;
1149 case OPCODE_SEQ_PAUSE:
1150 qla4_83xx_pause(ha, p_hdr);
1151 break;
1152 case OPCODE_SEQ_END:
1153 qla4_83xx_seq_end(ha, p_hdr);
1154 break;
1155 case OPCODE_TMPL_END:
1156 qla4_83xx_template_end(ha, p_hdr);
1157 break;
1158 case OPCODE_POLL_READ_LIST:
1159 qla4_83xx_poll_read_list(ha, p_hdr);
1160 break;
1161 default:
1162 ql4_printk(KERN_ERR, ha, "%s: Unknown command ==> 0x%04x on entry = %d\n",
1163 __func__, p_hdr->cmd, index);
1164 break;
1165 }
1166
1167 /* Set pointer to next entry in the sequence. */
1168 p_entry += p_hdr->size;
1169 }
1170
1171 ha->reset_tmplt.seq_index = index;
1172 }
1173
qla4_83xx_process_stop_seq(struct scsi_qla_host * ha)1174 static void qla4_83xx_process_stop_seq(struct scsi_qla_host *ha)
1175 {
1176 ha->reset_tmplt.seq_index = 0;
1177 qla4_83xx_process_reset_template(ha, ha->reset_tmplt.stop_offset);
1178
1179 if (ha->reset_tmplt.seq_end != 1)
1180 ql4_printk(KERN_ERR, ha, "%s: Abrupt STOP Sub-Sequence end.\n",
1181 __func__);
1182 }
1183
qla4_83xx_process_start_seq(struct scsi_qla_host * ha)1184 static void qla4_83xx_process_start_seq(struct scsi_qla_host *ha)
1185 {
1186 qla4_83xx_process_reset_template(ha, ha->reset_tmplt.start_offset);
1187
1188 if (ha->reset_tmplt.template_end != 1)
1189 ql4_printk(KERN_ERR, ha, "%s: Abrupt START Sub-Sequence end.\n",
1190 __func__);
1191 }
1192
qla4_83xx_process_init_seq(struct scsi_qla_host * ha)1193 static void qla4_83xx_process_init_seq(struct scsi_qla_host *ha)
1194 {
1195 qla4_83xx_process_reset_template(ha, ha->reset_tmplt.init_offset);
1196
1197 if (ha->reset_tmplt.seq_end != 1)
1198 ql4_printk(KERN_ERR, ha, "%s: Abrupt INIT Sub-Sequence end.\n",
1199 __func__);
1200 }
1201
qla4_83xx_restart(struct scsi_qla_host * ha)1202 static int qla4_83xx_restart(struct scsi_qla_host *ha)
1203 {
1204 int ret_val = QLA_SUCCESS;
1205 uint32_t idc_ctrl;
1206
1207 qla4_83xx_process_stop_seq(ha);
1208
1209 /*
1210 * Collect minidump.
1211 * If IDC_CTRL BIT1 is set, clear it on going to INIT state and
1212 * don't collect minidump
1213 */
1214 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
1215 if (idc_ctrl & GRACEFUL_RESET_BIT1) {
1216 qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL,
1217 (idc_ctrl & ~GRACEFUL_RESET_BIT1));
1218 ql4_printk(KERN_INFO, ha, "%s: Graceful RESET: Not collecting minidump\n",
1219 __func__);
1220 } else {
1221 qla4_8xxx_get_minidump(ha);
1222 }
1223
1224 qla4_83xx_process_init_seq(ha);
1225
1226 if (qla4_83xx_copy_bootloader(ha)) {
1227 ql4_printk(KERN_ERR, ha, "%s: Copy bootloader, firmware restart failed!\n",
1228 __func__);
1229 ret_val = QLA_ERROR;
1230 goto exit_restart;
1231 }
1232
1233 qla4_83xx_wr_reg(ha, QLA83XX_FW_IMAGE_VALID, QLA83XX_BOOT_FROM_FLASH);
1234 qla4_83xx_process_start_seq(ha);
1235
1236 exit_restart:
1237 return ret_val;
1238 }
1239
qla4_83xx_start_firmware(struct scsi_qla_host * ha)1240 int qla4_83xx_start_firmware(struct scsi_qla_host *ha)
1241 {
1242 int ret_val = QLA_SUCCESS;
1243
1244 ret_val = qla4_83xx_restart(ha);
1245 if (ret_val == QLA_ERROR) {
1246 ql4_printk(KERN_ERR, ha, "%s: Restart error\n", __func__);
1247 goto exit_start_fw;
1248 } else {
1249 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Restart done\n",
1250 __func__));
1251 }
1252
1253 ret_val = qla4_83xx_check_cmd_peg_status(ha);
1254 if (ret_val == QLA_ERROR)
1255 ql4_printk(KERN_ERR, ha, "%s: Peg not initialized\n",
1256 __func__);
1257
1258 exit_start_fw:
1259 return ret_val;
1260 }
1261
1262 /*----------------------Interrupt Related functions ---------------------*/
1263
qla4_83xx_disable_iocb_intrs(struct scsi_qla_host * ha)1264 static void qla4_83xx_disable_iocb_intrs(struct scsi_qla_host *ha)
1265 {
1266 if (test_and_clear_bit(AF_83XX_IOCB_INTR_ON, &ha->flags))
1267 qla4_8xxx_intr_disable(ha);
1268 }
1269
qla4_83xx_disable_mbox_intrs(struct scsi_qla_host * ha)1270 static void qla4_83xx_disable_mbox_intrs(struct scsi_qla_host *ha)
1271 {
1272 uint32_t mb_int, ret;
1273
1274 if (test_and_clear_bit(AF_83XX_MBOX_INTR_ON, &ha->flags)) {
1275 ret = readl(&ha->qla4_83xx_reg->mbox_int);
1276 mb_int = ret & ~INT_ENABLE_FW_MB;
1277 writel(mb_int, &ha->qla4_83xx_reg->mbox_int);
1278 writel(1, &ha->qla4_83xx_reg->leg_int_mask);
1279 }
1280 }
1281
qla4_83xx_disable_intrs(struct scsi_qla_host * ha)1282 void qla4_83xx_disable_intrs(struct scsi_qla_host *ha)
1283 {
1284 qla4_83xx_disable_mbox_intrs(ha);
1285 qla4_83xx_disable_iocb_intrs(ha);
1286 }
1287
qla4_83xx_enable_iocb_intrs(struct scsi_qla_host * ha)1288 static void qla4_83xx_enable_iocb_intrs(struct scsi_qla_host *ha)
1289 {
1290 if (!test_bit(AF_83XX_IOCB_INTR_ON, &ha->flags)) {
1291 qla4_8xxx_intr_enable(ha);
1292 set_bit(AF_83XX_IOCB_INTR_ON, &ha->flags);
1293 }
1294 }
1295
qla4_83xx_enable_mbox_intrs(struct scsi_qla_host * ha)1296 void qla4_83xx_enable_mbox_intrs(struct scsi_qla_host *ha)
1297 {
1298 uint32_t mb_int;
1299
1300 if (!test_bit(AF_83XX_MBOX_INTR_ON, &ha->flags)) {
1301 mb_int = INT_ENABLE_FW_MB;
1302 writel(mb_int, &ha->qla4_83xx_reg->mbox_int);
1303 writel(0, &ha->qla4_83xx_reg->leg_int_mask);
1304 set_bit(AF_83XX_MBOX_INTR_ON, &ha->flags);
1305 }
1306 }
1307
1308
qla4_83xx_enable_intrs(struct scsi_qla_host * ha)1309 void qla4_83xx_enable_intrs(struct scsi_qla_host *ha)
1310 {
1311 qla4_83xx_enable_mbox_intrs(ha);
1312 qla4_83xx_enable_iocb_intrs(ha);
1313 }
1314
1315
qla4_83xx_queue_mbox_cmd(struct scsi_qla_host * ha,uint32_t * mbx_cmd,int incount)1316 void qla4_83xx_queue_mbox_cmd(struct scsi_qla_host *ha, uint32_t *mbx_cmd,
1317 int incount)
1318 {
1319 int i;
1320
1321 /* Load all mailbox registers, except mailbox 0. */
1322 for (i = 1; i < incount; i++)
1323 writel(mbx_cmd[i], &ha->qla4_83xx_reg->mailbox_in[i]);
1324
1325 writel(mbx_cmd[0], &ha->qla4_83xx_reg->mailbox_in[0]);
1326
1327 /* Set Host Interrupt register to 1, to tell the firmware that
1328 * a mailbox command is pending. Firmware after reading the
1329 * mailbox command, clears the host interrupt register */
1330 writel(HINT_MBX_INT_PENDING, &ha->qla4_83xx_reg->host_intr);
1331 }
1332
qla4_83xx_process_mbox_intr(struct scsi_qla_host * ha,int outcount)1333 void qla4_83xx_process_mbox_intr(struct scsi_qla_host *ha, int outcount)
1334 {
1335 int intr_status;
1336
1337 intr_status = readl(&ha->qla4_83xx_reg->risc_intr);
1338 if (intr_status) {
1339 ha->mbox_status_count = outcount;
1340 ha->isp_ops->interrupt_service_routine(ha, intr_status);
1341 }
1342 }
1343
1344 /**
1345 * qla4_83xx_isp_reset - Resets ISP and aborts all outstanding commands.
1346 * @ha: pointer to host adapter structure.
1347 **/
qla4_83xx_isp_reset(struct scsi_qla_host * ha)1348 int qla4_83xx_isp_reset(struct scsi_qla_host *ha)
1349 {
1350 int rval;
1351 uint32_t dev_state;
1352
1353 ha->isp_ops->idc_lock(ha);
1354 dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
1355
1356 if (ql4xdontresethba)
1357 qla4_83xx_set_idc_dontreset(ha);
1358
1359 if (dev_state == QLA8XXX_DEV_READY) {
1360 /* If IDC_CTRL DONTRESETHBA_BIT0 is set dont do reset
1361 * recovery */
1362 if (qla4_83xx_idc_dontreset(ha) == DONTRESET_BIT0) {
1363 ql4_printk(KERN_ERR, ha, "%s: Reset recovery disabled\n",
1364 __func__);
1365 rval = QLA_ERROR;
1366 goto exit_isp_reset;
1367 }
1368
1369 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: HW State: NEED RESET\n",
1370 __func__));
1371 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
1372 QLA8XXX_DEV_NEED_RESET);
1373
1374 } else {
1375 /* If device_state is NEED_RESET, go ahead with
1376 * Reset,irrespective of ql4xdontresethba. This is to allow a
1377 * non-reset-owner to force a reset. Non-reset-owner sets
1378 * the IDC_CTRL BIT0 to prevent Reset-owner from doing a Reset
1379 * and then forces a Reset by setting device_state to
1380 * NEED_RESET. */
1381 DEBUG2(ql4_printk(KERN_INFO, ha,
1382 "%s: HW state already set to NEED_RESET\n",
1383 __func__));
1384 }
1385
1386 /* For ISP8324 and ISP8042, Reset owner is NIC, iSCSI or FCOE based on
1387 * priority and which drivers are present. Unlike ISP8022, the function
1388 * setting NEED_RESET, may not be the Reset owner. */
1389 if (qla4_83xx_can_perform_reset(ha))
1390 set_bit(AF_8XXX_RST_OWNER, &ha->flags);
1391
1392 ha->isp_ops->idc_unlock(ha);
1393 rval = qla4_8xxx_device_state_handler(ha);
1394
1395 ha->isp_ops->idc_lock(ha);
1396 qla4_8xxx_clear_rst_ready(ha);
1397 exit_isp_reset:
1398 ha->isp_ops->idc_unlock(ha);
1399
1400 if (rval == QLA_SUCCESS)
1401 clear_bit(AF_FW_RECOVERY, &ha->flags);
1402
1403 return rval;
1404 }
1405
qla4_83xx_dump_pause_control_regs(struct scsi_qla_host * ha)1406 static void qla4_83xx_dump_pause_control_regs(struct scsi_qla_host *ha)
1407 {
1408 u32 val = 0, val1 = 0;
1409 int i, status = QLA_SUCCESS;
1410
1411 status = qla4_83xx_rd_reg_indirect(ha, QLA83XX_SRE_SHIM_CONTROL, &val);
1412 DEBUG2(ql4_printk(KERN_INFO, ha, "SRE-Shim Ctrl:0x%x\n", val));
1413
1414 /* Port 0 Rx Buffer Pause Threshold Registers. */
1415 DEBUG2(ql4_printk(KERN_INFO, ha,
1416 "Port 0 Rx Buffer Pause Threshold Registers[TC7..TC0]:"));
1417 for (i = 0; i < 8; i++) {
1418 status = qla4_83xx_rd_reg_indirect(ha,
1419 QLA83XX_PORT0_RXB_PAUSE_THRS + (i * 0x4), &val);
1420 DEBUG2(pr_info("0x%x ", val));
1421 }
1422
1423 DEBUG2(pr_info("\n"));
1424
1425 /* Port 1 Rx Buffer Pause Threshold Registers. */
1426 DEBUG2(ql4_printk(KERN_INFO, ha,
1427 "Port 1 Rx Buffer Pause Threshold Registers[TC7..TC0]:"));
1428 for (i = 0; i < 8; i++) {
1429 status = qla4_83xx_rd_reg_indirect(ha,
1430 QLA83XX_PORT1_RXB_PAUSE_THRS + (i * 0x4), &val);
1431 DEBUG2(pr_info("0x%x ", val));
1432 }
1433
1434 DEBUG2(pr_info("\n"));
1435
1436 /* Port 0 RxB Traffic Class Max Cell Registers. */
1437 DEBUG2(ql4_printk(KERN_INFO, ha,
1438 "Port 0 RxB Traffic Class Max Cell Registers[3..0]:"));
1439 for (i = 0; i < 4; i++) {
1440 status = qla4_83xx_rd_reg_indirect(ha,
1441 QLA83XX_PORT0_RXB_TC_MAX_CELL + (i * 0x4), &val);
1442 DEBUG2(pr_info("0x%x ", val));
1443 }
1444
1445 DEBUG2(pr_info("\n"));
1446
1447 /* Port 1 RxB Traffic Class Max Cell Registers. */
1448 DEBUG2(ql4_printk(KERN_INFO, ha,
1449 "Port 1 RxB Traffic Class Max Cell Registers[3..0]:"));
1450 for (i = 0; i < 4; i++) {
1451 status = qla4_83xx_rd_reg_indirect(ha,
1452 QLA83XX_PORT1_RXB_TC_MAX_CELL + (i * 0x4), &val);
1453 DEBUG2(pr_info("0x%x ", val));
1454 }
1455
1456 DEBUG2(pr_info("\n"));
1457
1458 /* Port 0 RxB Rx Traffic Class Stats. */
1459 DEBUG2(ql4_printk(KERN_INFO, ha,
1460 "Port 0 RxB Rx Traffic Class Stats [TC7..TC0]"));
1461 for (i = 7; i >= 0; i--) {
1462 status = qla4_83xx_rd_reg_indirect(ha,
1463 QLA83XX_PORT0_RXB_TC_STATS,
1464 &val);
1465 val &= ~(0x7 << 29); /* Reset bits 29 to 31 */
1466 qla4_83xx_wr_reg_indirect(ha, QLA83XX_PORT0_RXB_TC_STATS,
1467 (val | (i << 29)));
1468 status = qla4_83xx_rd_reg_indirect(ha,
1469 QLA83XX_PORT0_RXB_TC_STATS,
1470 &val);
1471 DEBUG2(pr_info("0x%x ", val));
1472 }
1473
1474 DEBUG2(pr_info("\n"));
1475
1476 /* Port 1 RxB Rx Traffic Class Stats. */
1477 DEBUG2(ql4_printk(KERN_INFO, ha,
1478 "Port 1 RxB Rx Traffic Class Stats [TC7..TC0]"));
1479 for (i = 7; i >= 0; i--) {
1480 status = qla4_83xx_rd_reg_indirect(ha,
1481 QLA83XX_PORT1_RXB_TC_STATS,
1482 &val);
1483 val &= ~(0x7 << 29); /* Reset bits 29 to 31 */
1484 qla4_83xx_wr_reg_indirect(ha, QLA83XX_PORT1_RXB_TC_STATS,
1485 (val | (i << 29)));
1486 status = qla4_83xx_rd_reg_indirect(ha,
1487 QLA83XX_PORT1_RXB_TC_STATS,
1488 &val);
1489 DEBUG2(pr_info("0x%x ", val));
1490 }
1491
1492 DEBUG2(pr_info("\n"));
1493
1494 status = qla4_83xx_rd_reg_indirect(ha, QLA83XX_PORT2_IFB_PAUSE_THRS,
1495 &val);
1496 status = qla4_83xx_rd_reg_indirect(ha, QLA83XX_PORT3_IFB_PAUSE_THRS,
1497 &val1);
1498
1499 DEBUG2(ql4_printk(KERN_INFO, ha,
1500 "IFB-Pause Thresholds: Port 2:0x%x, Port 3:0x%x\n",
1501 val, val1));
1502 }
1503
__qla4_83xx_disable_pause(struct scsi_qla_host * ha)1504 static void __qla4_83xx_disable_pause(struct scsi_qla_host *ha)
1505 {
1506 int i;
1507
1508 /* set SRE-Shim Control Register */
1509 qla4_83xx_wr_reg_indirect(ha, QLA83XX_SRE_SHIM_CONTROL,
1510 QLA83XX_SET_PAUSE_VAL);
1511
1512 for (i = 0; i < 8; i++) {
1513 /* Port 0 Rx Buffer Pause Threshold Registers. */
1514 qla4_83xx_wr_reg_indirect(ha,
1515 QLA83XX_PORT0_RXB_PAUSE_THRS + (i * 0x4),
1516 QLA83XX_SET_PAUSE_VAL);
1517 /* Port 1 Rx Buffer Pause Threshold Registers. */
1518 qla4_83xx_wr_reg_indirect(ha,
1519 QLA83XX_PORT1_RXB_PAUSE_THRS + (i * 0x4),
1520 QLA83XX_SET_PAUSE_VAL);
1521 }
1522
1523 for (i = 0; i < 4; i++) {
1524 /* Port 0 RxB Traffic Class Max Cell Registers. */
1525 qla4_83xx_wr_reg_indirect(ha,
1526 QLA83XX_PORT0_RXB_TC_MAX_CELL + (i * 0x4),
1527 QLA83XX_SET_TC_MAX_CELL_VAL);
1528 /* Port 1 RxB Traffic Class Max Cell Registers. */
1529 qla4_83xx_wr_reg_indirect(ha,
1530 QLA83XX_PORT1_RXB_TC_MAX_CELL + (i * 0x4),
1531 QLA83XX_SET_TC_MAX_CELL_VAL);
1532 }
1533
1534 qla4_83xx_wr_reg_indirect(ha, QLA83XX_PORT2_IFB_PAUSE_THRS,
1535 QLA83XX_SET_PAUSE_VAL);
1536 qla4_83xx_wr_reg_indirect(ha, QLA83XX_PORT3_IFB_PAUSE_THRS,
1537 QLA83XX_SET_PAUSE_VAL);
1538
1539 ql4_printk(KERN_INFO, ha, "Disabled pause frames successfully.\n");
1540 }
1541
1542 /**
1543 * qla4_83xx_eport_init - Initialize EPort.
1544 * @ha: Pointer to host adapter structure.
1545 *
1546 * If EPort hardware is in reset state before disabling pause, there would be
1547 * serious hardware wedging issues. To prevent this perform eport init everytime
1548 * before disabling pause frames.
1549 **/
qla4_83xx_eport_init(struct scsi_qla_host * ha)1550 static void qla4_83xx_eport_init(struct scsi_qla_host *ha)
1551 {
1552 /* Clear the 8 registers */
1553 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_REG, 0x0);
1554 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_PORT0, 0x0);
1555 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_PORT1, 0x0);
1556 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_PORT2, 0x0);
1557 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_PORT3, 0x0);
1558 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_SRE_SHIM, 0x0);
1559 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_EPG_SHIM, 0x0);
1560 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_ETHER_PCS, 0x0);
1561
1562 /* Write any value to Reset Control register */
1563 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_CONTROL, 0xFF);
1564
1565 ql4_printk(KERN_INFO, ha, "EPORT is out of reset.\n");
1566 }
1567
qla4_83xx_disable_pause(struct scsi_qla_host * ha)1568 void qla4_83xx_disable_pause(struct scsi_qla_host *ha)
1569 {
1570 ha->isp_ops->idc_lock(ha);
1571 /* Before disabling pause frames, ensure that eport is not in reset */
1572 qla4_83xx_eport_init(ha);
1573 qla4_83xx_dump_pause_control_regs(ha);
1574 __qla4_83xx_disable_pause(ha);
1575 ha->isp_ops->idc_unlock(ha);
1576 }
1577
1578 /**
1579 * qla4_83xx_is_detached - Check if we are marked invisible.
1580 * @ha: Pointer to host adapter structure.
1581 **/
qla4_83xx_is_detached(struct scsi_qla_host * ha)1582 int qla4_83xx_is_detached(struct scsi_qla_host *ha)
1583 {
1584 uint32_t drv_active;
1585
1586 drv_active = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DRV_ACTIVE);
1587
1588 if (test_bit(AF_INIT_DONE, &ha->flags) &&
1589 !(drv_active & (1 << ha->func_num))) {
1590 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: drv_active = 0x%X\n",
1591 __func__, drv_active));
1592 return QLA_SUCCESS;
1593 }
1594
1595 return QLA_ERROR;
1596 }
1597
