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Merge branch 'for-3.15/drivers' of git://git.kernel.dk/linux-block
[mirror_ubuntu-bionic-kernel.git] / drivers / scsi / qla4xxx / ql4_83xx.c
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 /**
253 * qla4_83xx_ms_mem_write_128b - Writes data to MS/off-chip memory
254 * @ha: Pointer to adapter structure
255 * @addr: Flash address to write to
256 * @data: Data to be written
257 * @count: word_count to be written
258 *
259 * Return: On success return QLA_SUCCESS
260 * On error return QLA_ERROR
261 **/
262 int qla4_83xx_ms_mem_write_128b(struct scsi_qla_host *ha, uint64_t addr,
263 uint32_t *data, uint32_t count)
264 {
265 int i, j;
266 uint32_t agt_ctrl;
267 unsigned long flags;
268 int ret_val = QLA_SUCCESS;
269
270 /* Only 128-bit aligned access */
271 if (addr & 0xF) {
272 ret_val = QLA_ERROR;
273 goto exit_ms_mem_write;
274 }
275
276 write_lock_irqsave(&ha->hw_lock, flags);
277
278 /* Write address */
279 ret_val = qla4_83xx_wr_reg_indirect(ha, MD_MIU_TEST_AGT_ADDR_HI, 0);
280 if (ret_val == QLA_ERROR) {
281 ql4_printk(KERN_ERR, ha, "%s: write to AGT_ADDR_HI failed\n",
282 __func__);
283 goto exit_ms_mem_write_unlock;
284 }
285
286 for (i = 0; i < count; i++, addr += 16) {
287 if (!((QLA8XXX_ADDR_IN_RANGE(addr, QLA8XXX_ADDR_QDR_NET,
288 QLA8XXX_ADDR_QDR_NET_MAX)) ||
289 (QLA8XXX_ADDR_IN_RANGE(addr, QLA8XXX_ADDR_DDR_NET,
290 QLA8XXX_ADDR_DDR_NET_MAX)))) {
291 ret_val = QLA_ERROR;
292 goto exit_ms_mem_write_unlock;
293 }
294
295 ret_val = qla4_83xx_wr_reg_indirect(ha, MD_MIU_TEST_AGT_ADDR_LO,
296 addr);
297 /* Write data */
298 ret_val |= qla4_83xx_wr_reg_indirect(ha,
299 MD_MIU_TEST_AGT_WRDATA_LO,
300 *data++);
301 ret_val |= qla4_83xx_wr_reg_indirect(ha,
302 MD_MIU_TEST_AGT_WRDATA_HI,
303 *data++);
304 ret_val |= qla4_83xx_wr_reg_indirect(ha,
305 MD_MIU_TEST_AGT_WRDATA_ULO,
306 *data++);
307 ret_val |= qla4_83xx_wr_reg_indirect(ha,
308 MD_MIU_TEST_AGT_WRDATA_UHI,
309 *data++);
310 if (ret_val == QLA_ERROR) {
311 ql4_printk(KERN_ERR, ha, "%s: write to AGT_WRDATA failed\n",
312 __func__);
313 goto exit_ms_mem_write_unlock;
314 }
315
316 /* Check write status */
317 ret_val = qla4_83xx_wr_reg_indirect(ha, MD_MIU_TEST_AGT_CTRL,
318 MIU_TA_CTL_WRITE_ENABLE);
319 ret_val |= qla4_83xx_wr_reg_indirect(ha, MD_MIU_TEST_AGT_CTRL,
320 MIU_TA_CTL_WRITE_START);
321 if (ret_val == QLA_ERROR) {
322 ql4_printk(KERN_ERR, ha, "%s: write to AGT_CTRL failed\n",
323 __func__);
324 goto exit_ms_mem_write_unlock;
325 }
326
327 for (j = 0; j < MAX_CTL_CHECK; j++) {
328 ret_val = qla4_83xx_rd_reg_indirect(ha,
329 MD_MIU_TEST_AGT_CTRL,
330 &agt_ctrl);
331 if (ret_val == QLA_ERROR) {
332 ql4_printk(KERN_ERR, ha, "%s: failed to read MD_MIU_TEST_AGT_CTRL\n",
333 __func__);
334 goto exit_ms_mem_write_unlock;
335 }
336 if ((agt_ctrl & MIU_TA_CTL_BUSY) == 0)
337 break;
338 }
339
340 /* Status check failed */
341 if (j >= MAX_CTL_CHECK) {
342 printk_ratelimited(KERN_ERR "%s: MS memory write failed!\n",
343 __func__);
344 ret_val = QLA_ERROR;
345 goto exit_ms_mem_write_unlock;
346 }
347 }
348
349 exit_ms_mem_write_unlock:
350 write_unlock_irqrestore(&ha->hw_lock, flags);
351
352 exit_ms_mem_write:
353 return ret_val;
354 }
355
356 #define INTENT_TO_RECOVER 0x01
357 #define PROCEED_TO_RECOVER 0x02
358
359 static int qla4_83xx_lock_recovery(struct scsi_qla_host *ha)
360 {
361
362 uint32_t lock = 0, lockid;
363 int ret_val = QLA_ERROR;
364
365 lockid = ha->isp_ops->rd_reg_direct(ha, QLA83XX_DRV_LOCKRECOVERY);
366
367 /* Check for other Recovery in progress, go wait */
368 if ((lockid & 0x3) != 0)
369 goto exit_lock_recovery;
370
371 /* Intent to Recover */
372 ha->isp_ops->wr_reg_direct(ha, QLA83XX_DRV_LOCKRECOVERY,
373 (ha->func_num << 2) | INTENT_TO_RECOVER);
374
375 msleep(200);
376
377 /* Check Intent to Recover is advertised */
378 lockid = ha->isp_ops->rd_reg_direct(ha, QLA83XX_DRV_LOCKRECOVERY);
379 if ((lockid & 0x3C) != (ha->func_num << 2))
380 goto exit_lock_recovery;
381
382 ql4_printk(KERN_INFO, ha, "%s: IDC Lock recovery initiated for func %d\n",
383 __func__, ha->func_num);
384
385 /* Proceed to Recover */
386 ha->isp_ops->wr_reg_direct(ha, QLA83XX_DRV_LOCKRECOVERY,
387 (ha->func_num << 2) | PROCEED_TO_RECOVER);
388
389 /* Force Unlock */
390 ha->isp_ops->wr_reg_direct(ha, QLA83XX_DRV_LOCK_ID, 0xFF);
391 ha->isp_ops->rd_reg_direct(ha, QLA83XX_DRV_UNLOCK);
392
393 /* Clear bits 0-5 in IDC_RECOVERY register*/
394 ha->isp_ops->wr_reg_direct(ha, QLA83XX_DRV_LOCKRECOVERY, 0);
395
396 /* Get lock */
397 lock = ha->isp_ops->rd_reg_direct(ha, QLA83XX_DRV_LOCK);
398 if (lock) {
399 lockid = ha->isp_ops->rd_reg_direct(ha, QLA83XX_DRV_LOCK_ID);
400 lockid = ((lockid + (1 << 8)) & ~0xFF) | ha->func_num;
401 ha->isp_ops->wr_reg_direct(ha, QLA83XX_DRV_LOCK_ID, lockid);
402 ret_val = QLA_SUCCESS;
403 }
404
405 exit_lock_recovery:
406 return ret_val;
407 }
408
409 #define QLA83XX_DRV_LOCK_MSLEEP 200
410
411 int qla4_83xx_drv_lock(struct scsi_qla_host *ha)
412 {
413 int timeout = 0;
414 uint32_t status = 0;
415 int ret_val = QLA_SUCCESS;
416 uint32_t first_owner = 0;
417 uint32_t tmo_owner = 0;
418 uint32_t lock_id;
419 uint32_t func_num;
420 uint32_t lock_cnt;
421
422 while (status == 0) {
423 status = qla4_83xx_rd_reg(ha, QLA83XX_DRV_LOCK);
424 if (status) {
425 /* Increment Counter (8-31) and update func_num (0-7) on
426 * getting a successful lock */
427 lock_id = qla4_83xx_rd_reg(ha, QLA83XX_DRV_LOCK_ID);
428 lock_id = ((lock_id + (1 << 8)) & ~0xFF) | ha->func_num;
429 qla4_83xx_wr_reg(ha, QLA83XX_DRV_LOCK_ID, lock_id);
430 break;
431 }
432
433 if (timeout == 0)
434 /* Save counter + ID of function holding the lock for
435 * first failure */
436 first_owner = ha->isp_ops->rd_reg_direct(ha,
437 QLA83XX_DRV_LOCK_ID);
438
439 if (++timeout >=
440 (QLA83XX_DRV_LOCK_TIMEOUT / QLA83XX_DRV_LOCK_MSLEEP)) {
441 tmo_owner = qla4_83xx_rd_reg(ha, QLA83XX_DRV_LOCK_ID);
442 func_num = tmo_owner & 0xFF;
443 lock_cnt = tmo_owner >> 8;
444 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",
445 __func__, ha->func_num, func_num, lock_cnt,
446 (first_owner & 0xFF));
447
448 if (first_owner != tmo_owner) {
449 /* Some other driver got lock, OR same driver
450 * got lock again (counter value changed), when
451 * we were waiting for lock.
452 * Retry for another 2 sec */
453 ql4_printk(KERN_INFO, ha, "%s: IDC lock failed for func %d\n",
454 __func__, ha->func_num);
455 timeout = 0;
456 } else {
457 /* Same driver holding lock > 2sec.
458 * Force Recovery */
459 ret_val = qla4_83xx_lock_recovery(ha);
460 if (ret_val == QLA_SUCCESS) {
461 /* Recovered and got lock */
462 ql4_printk(KERN_INFO, ha, "%s: IDC lock Recovery by %d successful\n",
463 __func__, ha->func_num);
464 break;
465 }
466 /* Recovery Failed, some other function
467 * has the lock, wait for 2secs and retry */
468 ql4_printk(KERN_INFO, ha, "%s: IDC lock Recovery by %d failed, Retrying timeout\n",
469 __func__, ha->func_num);
470 timeout = 0;
471 }
472 }
473 msleep(QLA83XX_DRV_LOCK_MSLEEP);
474 }
475
476 return ret_val;
477 }
478
479 void qla4_83xx_drv_unlock(struct scsi_qla_host *ha)
480 {
481 int id;
482
483 id = qla4_83xx_rd_reg(ha, QLA83XX_DRV_LOCK_ID);
484
485 if ((id & 0xFF) != ha->func_num) {
486 ql4_printk(KERN_ERR, ha, "%s: IDC Unlock by %d failed, lock owner is %d\n",
487 __func__, ha->func_num, (id & 0xFF));
488 return;
489 }
490
491 /* Keep lock counter value, update the ha->func_num to 0xFF */
492 qla4_83xx_wr_reg(ha, QLA83XX_DRV_LOCK_ID, (id | 0xFF));
493 qla4_83xx_rd_reg(ha, QLA83XX_DRV_UNLOCK);
494 }
495
496 void qla4_83xx_set_idc_dontreset(struct scsi_qla_host *ha)
497 {
498 uint32_t idc_ctrl;
499
500 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
501 idc_ctrl |= DONTRESET_BIT0;
502 qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL, idc_ctrl);
503 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: idc_ctrl = %d\n", __func__,
504 idc_ctrl));
505 }
506
507 void qla4_83xx_clear_idc_dontreset(struct scsi_qla_host *ha)
508 {
509 uint32_t idc_ctrl;
510
511 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
512 idc_ctrl &= ~DONTRESET_BIT0;
513 qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL, idc_ctrl);
514 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: idc_ctrl = %d\n", __func__,
515 idc_ctrl));
516 }
517
518 int qla4_83xx_idc_dontreset(struct scsi_qla_host *ha)
519 {
520 uint32_t idc_ctrl;
521
522 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
523 return idc_ctrl & DONTRESET_BIT0;
524 }
525
526 /*-------------------------IDC State Machine ---------------------*/
527
528 enum {
529 UNKNOWN_CLASS = 0,
530 NIC_CLASS,
531 FCOE_CLASS,
532 ISCSI_CLASS
533 };
534
535 struct device_info {
536 int func_num;
537 int device_type;
538 int port_num;
539 };
540
541 int qla4_83xx_can_perform_reset(struct scsi_qla_host *ha)
542 {
543 uint32_t drv_active;
544 uint32_t dev_part, dev_part1, dev_part2;
545 int i;
546 struct device_info device_map[16];
547 int func_nibble;
548 int nibble;
549 int nic_present = 0;
550 int iscsi_present = 0;
551 int iscsi_func_low = 0;
552
553 /* Use the dev_partition register to determine the PCI function number
554 * and then check drv_active register to see which driver is loaded */
555 dev_part1 = qla4_83xx_rd_reg(ha,
556 ha->reg_tbl[QLA8XXX_CRB_DEV_PART_INFO]);
557 dev_part2 = qla4_83xx_rd_reg(ha, QLA83XX_CRB_DEV_PART_INFO2);
558 drv_active = qla4_83xx_rd_reg(ha, ha->reg_tbl[QLA8XXX_CRB_DRV_ACTIVE]);
559
560 /* Each function has 4 bits in dev_partition Info register,
561 * Lower 2 bits - device type, Upper 2 bits - physical port number */
562 dev_part = dev_part1;
563 for (i = nibble = 0; i <= 15; i++, nibble++) {
564 func_nibble = dev_part & (0xF << (nibble * 4));
565 func_nibble >>= (nibble * 4);
566 device_map[i].func_num = i;
567 device_map[i].device_type = func_nibble & 0x3;
568 device_map[i].port_num = func_nibble & 0xC;
569
570 if (device_map[i].device_type == NIC_CLASS) {
571 if (drv_active & (1 << device_map[i].func_num)) {
572 nic_present++;
573 break;
574 }
575 } else if (device_map[i].device_type == ISCSI_CLASS) {
576 if (drv_active & (1 << device_map[i].func_num)) {
577 if (!iscsi_present ||
578 (iscsi_present &&
579 (iscsi_func_low > device_map[i].func_num)))
580 iscsi_func_low = device_map[i].func_num;
581
582 iscsi_present++;
583 }
584 }
585
586 /* For function_num[8..15] get info from dev_part2 register */
587 if (nibble == 7) {
588 nibble = 0;
589 dev_part = dev_part2;
590 }
591 }
592
593 /* NIC, iSCSI and FCOE are the Reset owners based on order, NIC gets
594 * precedence over iSCSI and FCOE and iSCSI over FCOE, based on drivers
595 * present. */
596 if (!nic_present && (ha->func_num == iscsi_func_low)) {
597 DEBUG2(ql4_printk(KERN_INFO, ha,
598 "%s: can reset - NIC not present and lower iSCSI function is %d\n",
599 __func__, ha->func_num));
600 return 1;
601 }
602
603 return 0;
604 }
605
606 /**
607 * qla4_83xx_need_reset_handler - Code to start reset sequence
608 * @ha: pointer to adapter structure
609 *
610 * Note: IDC lock must be held upon entry
611 **/
612 void qla4_83xx_need_reset_handler(struct scsi_qla_host *ha)
613 {
614 uint32_t dev_state, drv_state, drv_active;
615 unsigned long reset_timeout, dev_init_timeout;
616
617 ql4_printk(KERN_INFO, ha, "%s: Performing ISP error recovery\n",
618 __func__);
619
620 if (!test_bit(AF_8XXX_RST_OWNER, &ha->flags)) {
621 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: reset acknowledged\n",
622 __func__));
623 qla4_8xxx_set_rst_ready(ha);
624
625 /* Non-reset owners ACK Reset and wait for device INIT state
626 * as part of Reset Recovery by Reset Owner */
627 dev_init_timeout = jiffies + (ha->nx_dev_init_timeout * HZ);
628
629 do {
630 if (time_after_eq(jiffies, dev_init_timeout)) {
631 ql4_printk(KERN_INFO, ha, "%s: Non Reset owner dev init timeout\n",
632 __func__);
633 break;
634 }
635
636 ha->isp_ops->idc_unlock(ha);
637 msleep(1000);
638 ha->isp_ops->idc_lock(ha);
639
640 dev_state = qla4_8xxx_rd_direct(ha,
641 QLA8XXX_CRB_DEV_STATE);
642 } while (dev_state == QLA8XXX_DEV_NEED_RESET);
643 } else {
644 qla4_8xxx_set_rst_ready(ha);
645 reset_timeout = jiffies + (ha->nx_reset_timeout * HZ);
646 drv_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DRV_STATE);
647 drv_active = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DRV_ACTIVE);
648
649 ql4_printk(KERN_INFO, ha, "%s: drv_state = 0x%x, drv_active = 0x%x\n",
650 __func__, drv_state, drv_active);
651
652 while (drv_state != drv_active) {
653 if (time_after_eq(jiffies, reset_timeout)) {
654 ql4_printk(KERN_INFO, ha, "%s: %s: RESET TIMEOUT! drv_state: 0x%08x, drv_active: 0x%08x\n",
655 __func__, DRIVER_NAME, drv_state,
656 drv_active);
657 break;
658 }
659
660 ha->isp_ops->idc_unlock(ha);
661 msleep(1000);
662 ha->isp_ops->idc_lock(ha);
663
664 drv_state = qla4_8xxx_rd_direct(ha,
665 QLA8XXX_CRB_DRV_STATE);
666 drv_active = qla4_8xxx_rd_direct(ha,
667 QLA8XXX_CRB_DRV_ACTIVE);
668 }
669
670 if (drv_state != drv_active) {
671 ql4_printk(KERN_INFO, ha, "%s: Reset_owner turning off drv_active of non-acking function 0x%x\n",
672 __func__, (drv_active ^ drv_state));
673 drv_active = drv_active & drv_state;
674 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_ACTIVE,
675 drv_active);
676 }
677
678 clear_bit(AF_8XXX_RST_OWNER, &ha->flags);
679 /* Start Reset Recovery */
680 qla4_8xxx_device_bootstrap(ha);
681 }
682 }
683
684 void qla4_83xx_get_idc_param(struct scsi_qla_host *ha)
685 {
686 uint32_t idc_params, ret_val;
687
688 ret_val = qla4_83xx_flash_read_u32(ha, QLA83XX_IDC_PARAM_ADDR,
689 (uint8_t *)&idc_params, 1);
690 if (ret_val == QLA_SUCCESS) {
691 ha->nx_dev_init_timeout = idc_params & 0xFFFF;
692 ha->nx_reset_timeout = (idc_params >> 16) & 0xFFFF;
693 } else {
694 ha->nx_dev_init_timeout = ROM_DEV_INIT_TIMEOUT;
695 ha->nx_reset_timeout = ROM_DRV_RESET_ACK_TIMEOUT;
696 }
697
698 DEBUG2(ql4_printk(KERN_DEBUG, ha,
699 "%s: ha->nx_dev_init_timeout = %d, ha->nx_reset_timeout = %d\n",
700 __func__, ha->nx_dev_init_timeout,
701 ha->nx_reset_timeout));
702 }
703
704 /*-------------------------Reset Sequence Functions-----------------------*/
705
706 static void qla4_83xx_dump_reset_seq_hdr(struct scsi_qla_host *ha)
707 {
708 uint8_t *phdr;
709
710 if (!ha->reset_tmplt.buff) {
711 ql4_printk(KERN_ERR, ha, "%s: Error: Invalid reset_seq_template\n",
712 __func__);
713 return;
714 }
715
716 phdr = ha->reset_tmplt.buff;
717
718 DEBUG2(ql4_printk(KERN_INFO, ha,
719 "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",
720 *phdr, *(phdr+1), *(phdr+2), *(phdr+3), *(phdr+4),
721 *(phdr+5), *(phdr+6), *(phdr+7), *(phdr + 8),
722 *(phdr+9), *(phdr+10), *(phdr+11), *(phdr+12),
723 *(phdr+13), *(phdr+14), *(phdr+15)));
724 }
725
726 static int qla4_83xx_copy_bootloader(struct scsi_qla_host *ha)
727 {
728 uint8_t *p_cache;
729 uint32_t src, count, size;
730 uint64_t dest;
731 int ret_val = QLA_SUCCESS;
732
733 src = QLA83XX_BOOTLOADER_FLASH_ADDR;
734 dest = qla4_83xx_rd_reg(ha, QLA83XX_BOOTLOADER_ADDR);
735 size = qla4_83xx_rd_reg(ha, QLA83XX_BOOTLOADER_SIZE);
736
737 /* 128 bit alignment check */
738 if (size & 0xF)
739 size = (size + 16) & ~0xF;
740
741 /* 16 byte count */
742 count = size/16;
743
744 p_cache = vmalloc(size);
745 if (p_cache == NULL) {
746 ql4_printk(KERN_ERR, ha, "%s: Failed to allocate memory for boot loader cache\n",
747 __func__);
748 ret_val = QLA_ERROR;
749 goto exit_copy_bootloader;
750 }
751
752 ret_val = qla4_83xx_lockless_flash_read_u32(ha, src, p_cache,
753 size / sizeof(uint32_t));
754 if (ret_val == QLA_ERROR) {
755 ql4_printk(KERN_ERR, ha, "%s: Error reading firmware from flash\n",
756 __func__);
757 goto exit_copy_error;
758 }
759 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Read firmware from flash\n",
760 __func__));
761
762 /* 128 bit/16 byte write to MS memory */
763 ret_val = qla4_83xx_ms_mem_write_128b(ha, dest, (uint32_t *)p_cache,
764 count);
765 if (ret_val == QLA_ERROR) {
766 ql4_printk(KERN_ERR, ha, "%s: Error writing firmware to MS\n",
767 __func__);
768 goto exit_copy_error;
769 }
770
771 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Wrote firmware size %d to MS\n",
772 __func__, size));
773
774 exit_copy_error:
775 vfree(p_cache);
776
777 exit_copy_bootloader:
778 return ret_val;
779 }
780
781 static int qla4_83xx_check_cmd_peg_status(struct scsi_qla_host *ha)
782 {
783 uint32_t val, ret_val = QLA_ERROR;
784 int retries = CRB_CMDPEG_CHECK_RETRY_COUNT;
785
786 do {
787 val = qla4_83xx_rd_reg(ha, QLA83XX_CMDPEG_STATE);
788 if (val == PHAN_INITIALIZE_COMPLETE) {
789 DEBUG2(ql4_printk(KERN_INFO, ha,
790 "%s: Command Peg initialization complete. State=0x%x\n",
791 __func__, val));
792 ret_val = QLA_SUCCESS;
793 break;
794 }
795 msleep(CRB_CMDPEG_CHECK_DELAY);
796 } while (--retries);
797
798 return ret_val;
799 }
800
801 /**
802 * qla4_83xx_poll_reg - Poll the given CRB addr for duration msecs till
803 * value read ANDed with test_mask is equal to test_result.
804 *
805 * @ha : Pointer to adapter structure
806 * @addr : CRB register address
807 * @duration : Poll for total of "duration" msecs
808 * @test_mask : Mask value read with "test_mask"
809 * @test_result : Compare (value&test_mask) with test_result.
810 **/
811 static int qla4_83xx_poll_reg(struct scsi_qla_host *ha, uint32_t addr,
812 int duration, uint32_t test_mask,
813 uint32_t test_result)
814 {
815 uint32_t value;
816 uint8_t retries;
817 int ret_val = QLA_SUCCESS;
818
819 ret_val = qla4_83xx_rd_reg_indirect(ha, addr, &value);
820 if (ret_val == QLA_ERROR)
821 goto exit_poll_reg;
822
823 retries = duration / 10;
824 do {
825 if ((value & test_mask) != test_result) {
826 msleep(duration / 10);
827 ret_val = qla4_83xx_rd_reg_indirect(ha, addr, &value);
828 if (ret_val == QLA_ERROR)
829 goto exit_poll_reg;
830
831 ret_val = QLA_ERROR;
832 } else {
833 ret_val = QLA_SUCCESS;
834 break;
835 }
836 } while (retries--);
837
838 exit_poll_reg:
839 if (ret_val == QLA_ERROR) {
840 ha->reset_tmplt.seq_error++;
841 ql4_printk(KERN_ERR, ha, "%s: Poll Failed: 0x%08x 0x%08x 0x%08x\n",
842 __func__, value, test_mask, test_result);
843 }
844
845 return ret_val;
846 }
847
848 static int qla4_83xx_reset_seq_checksum_test(struct scsi_qla_host *ha)
849 {
850 uint32_t sum = 0;
851 uint16_t *buff = (uint16_t *)ha->reset_tmplt.buff;
852 int u16_count = ha->reset_tmplt.hdr->size / sizeof(uint16_t);
853 int ret_val;
854
855 while (u16_count-- > 0)
856 sum += *buff++;
857
858 while (sum >> 16)
859 sum = (sum & 0xFFFF) + (sum >> 16);
860
861 /* checksum of 0 indicates a valid template */
862 if (~sum) {
863 ret_val = QLA_SUCCESS;
864 } else {
865 ql4_printk(KERN_ERR, ha, "%s: Reset seq checksum failed\n",
866 __func__);
867 ret_val = QLA_ERROR;
868 }
869
870 return ret_val;
871 }
872
873 /**
874 * qla4_83xx_read_reset_template - Read Reset Template from Flash
875 * @ha: Pointer to adapter structure
876 **/
877 void qla4_83xx_read_reset_template(struct scsi_qla_host *ha)
878 {
879 uint8_t *p_buff;
880 uint32_t addr, tmplt_hdr_def_size, tmplt_hdr_size;
881 uint32_t ret_val;
882
883 ha->reset_tmplt.seq_error = 0;
884 ha->reset_tmplt.buff = vmalloc(QLA83XX_RESTART_TEMPLATE_SIZE);
885 if (ha->reset_tmplt.buff == NULL) {
886 ql4_printk(KERN_ERR, ha, "%s: Failed to allocate reset template resources\n",
887 __func__);
888 goto exit_read_reset_template;
889 }
890
891 p_buff = ha->reset_tmplt.buff;
892 addr = QLA83XX_RESET_TEMPLATE_ADDR;
893
894 tmplt_hdr_def_size = sizeof(struct qla4_83xx_reset_template_hdr) /
895 sizeof(uint32_t);
896
897 DEBUG2(ql4_printk(KERN_INFO, ha,
898 "%s: Read template hdr size %d from Flash\n",
899 __func__, tmplt_hdr_def_size));
900
901 /* Copy template header from flash */
902 ret_val = qla4_83xx_flash_read_u32(ha, addr, p_buff,
903 tmplt_hdr_def_size);
904 if (ret_val != QLA_SUCCESS) {
905 ql4_printk(KERN_ERR, ha, "%s: Failed to read reset template\n",
906 __func__);
907 goto exit_read_template_error;
908 }
909
910 ha->reset_tmplt.hdr =
911 (struct qla4_83xx_reset_template_hdr *)ha->reset_tmplt.buff;
912
913 /* Validate the template header size and signature */
914 tmplt_hdr_size = ha->reset_tmplt.hdr->hdr_size/sizeof(uint32_t);
915 if ((tmplt_hdr_size != tmplt_hdr_def_size) ||
916 (ha->reset_tmplt.hdr->signature != RESET_TMPLT_HDR_SIGNATURE)) {
917 ql4_printk(KERN_ERR, ha, "%s: Template Header size %d is invalid, tmplt_hdr_def_size %d\n",
918 __func__, tmplt_hdr_size, tmplt_hdr_def_size);
919 goto exit_read_template_error;
920 }
921
922 addr = QLA83XX_RESET_TEMPLATE_ADDR + ha->reset_tmplt.hdr->hdr_size;
923 p_buff = ha->reset_tmplt.buff + ha->reset_tmplt.hdr->hdr_size;
924 tmplt_hdr_def_size = (ha->reset_tmplt.hdr->size -
925 ha->reset_tmplt.hdr->hdr_size) / sizeof(uint32_t);
926
927 DEBUG2(ql4_printk(KERN_INFO, ha,
928 "%s: Read rest of the template size %d\n",
929 __func__, ha->reset_tmplt.hdr->size));
930
931 /* Copy rest of the template */
932 ret_val = qla4_83xx_flash_read_u32(ha, addr, p_buff,
933 tmplt_hdr_def_size);
934 if (ret_val != QLA_SUCCESS) {
935 ql4_printk(KERN_ERR, ha, "%s: Failed to read reset tempelate\n",
936 __func__);
937 goto exit_read_template_error;
938 }
939
940 /* Integrity check */
941 if (qla4_83xx_reset_seq_checksum_test(ha)) {
942 ql4_printk(KERN_ERR, ha, "%s: Reset Seq checksum failed!\n",
943 __func__);
944 goto exit_read_template_error;
945 }
946 DEBUG2(ql4_printk(KERN_INFO, ha,
947 "%s: Reset Seq checksum passed, Get stop, start and init seq offsets\n",
948 __func__));
949
950 /* Get STOP, START, INIT sequence offsets */
951 ha->reset_tmplt.init_offset = ha->reset_tmplt.buff +
952 ha->reset_tmplt.hdr->init_seq_offset;
953 ha->reset_tmplt.start_offset = ha->reset_tmplt.buff +
954 ha->reset_tmplt.hdr->start_seq_offset;
955 ha->reset_tmplt.stop_offset = ha->reset_tmplt.buff +
956 ha->reset_tmplt.hdr->hdr_size;
957 qla4_83xx_dump_reset_seq_hdr(ha);
958
959 goto exit_read_reset_template;
960
961 exit_read_template_error:
962 vfree(ha->reset_tmplt.buff);
963
964 exit_read_reset_template:
965 return;
966 }
967
968 /**
969 * qla4_83xx_read_write_crb_reg - Read from raddr and write value to waddr.
970 *
971 * @ha : Pointer to adapter structure
972 * @raddr : CRB address to read from
973 * @waddr : CRB address to write to
974 **/
975 static void qla4_83xx_read_write_crb_reg(struct scsi_qla_host *ha,
976 uint32_t raddr, uint32_t waddr)
977 {
978 uint32_t value;
979
980 qla4_83xx_rd_reg_indirect(ha, raddr, &value);
981 qla4_83xx_wr_reg_indirect(ha, waddr, value);
982 }
983
984 /**
985 * qla4_83xx_rmw_crb_reg - Read Modify Write crb register
986 *
987 * This function read value from raddr, AND with test_mask,
988 * Shift Left,Right/OR/XOR with values RMW header and write value to waddr.
989 *
990 * @ha : Pointer to adapter structure
991 * @raddr : CRB address to read from
992 * @waddr : CRB address to write to
993 * @p_rmw_hdr : header with shift/or/xor values.
994 **/
995 static void qla4_83xx_rmw_crb_reg(struct scsi_qla_host *ha, uint32_t raddr,
996 uint32_t waddr,
997 struct qla4_83xx_rmw *p_rmw_hdr)
998 {
999 uint32_t value;
1000
1001 if (p_rmw_hdr->index_a)
1002 value = ha->reset_tmplt.array[p_rmw_hdr->index_a];
1003 else
1004 qla4_83xx_rd_reg_indirect(ha, raddr, &value);
1005
1006 value &= p_rmw_hdr->test_mask;
1007 value <<= p_rmw_hdr->shl;
1008 value >>= p_rmw_hdr->shr;
1009 value |= p_rmw_hdr->or_value;
1010 value ^= p_rmw_hdr->xor_value;
1011
1012 qla4_83xx_wr_reg_indirect(ha, waddr, value);
1013
1014 return;
1015 }
1016
1017 static void qla4_83xx_write_list(struct scsi_qla_host *ha,
1018 struct qla4_83xx_reset_entry_hdr *p_hdr)
1019 {
1020 struct qla4_83xx_entry *p_entry;
1021 uint32_t i;
1022
1023 p_entry = (struct qla4_83xx_entry *)
1024 ((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
1025
1026 for (i = 0; i < p_hdr->count; i++, p_entry++) {
1027 qla4_83xx_wr_reg_indirect(ha, p_entry->arg1, p_entry->arg2);
1028 if (p_hdr->delay)
1029 udelay((uint32_t)(p_hdr->delay));
1030 }
1031 }
1032
1033 static void qla4_83xx_read_write_list(struct scsi_qla_host *ha,
1034 struct qla4_83xx_reset_entry_hdr *p_hdr)
1035 {
1036 struct qla4_83xx_entry *p_entry;
1037 uint32_t i;
1038
1039 p_entry = (struct qla4_83xx_entry *)
1040 ((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
1041
1042 for (i = 0; i < p_hdr->count; i++, p_entry++) {
1043 qla4_83xx_read_write_crb_reg(ha, p_entry->arg1, p_entry->arg2);
1044 if (p_hdr->delay)
1045 udelay((uint32_t)(p_hdr->delay));
1046 }
1047 }
1048
1049 static void qla4_83xx_poll_list(struct scsi_qla_host *ha,
1050 struct qla4_83xx_reset_entry_hdr *p_hdr)
1051 {
1052 long delay;
1053 struct qla4_83xx_entry *p_entry;
1054 struct qla4_83xx_poll *p_poll;
1055 uint32_t i;
1056 uint32_t value;
1057
1058 p_poll = (struct qla4_83xx_poll *)
1059 ((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
1060
1061 /* Entries start after 8 byte qla4_83xx_poll, poll header contains
1062 * the test_mask, test_value. */
1063 p_entry = (struct qla4_83xx_entry *)((char *)p_poll +
1064 sizeof(struct qla4_83xx_poll));
1065
1066 delay = (long)p_hdr->delay;
1067 if (!delay) {
1068 for (i = 0; i < p_hdr->count; i++, p_entry++) {
1069 qla4_83xx_poll_reg(ha, p_entry->arg1, delay,
1070 p_poll->test_mask,
1071 p_poll->test_value);
1072 }
1073 } else {
1074 for (i = 0; i < p_hdr->count; i++, p_entry++) {
1075 if (qla4_83xx_poll_reg(ha, p_entry->arg1, delay,
1076 p_poll->test_mask,
1077 p_poll->test_value)) {
1078 qla4_83xx_rd_reg_indirect(ha, p_entry->arg1,
1079 &value);
1080 qla4_83xx_rd_reg_indirect(ha, p_entry->arg2,
1081 &value);
1082 }
1083 }
1084 }
1085 }
1086
1087 static void qla4_83xx_poll_write_list(struct scsi_qla_host *ha,
1088 struct qla4_83xx_reset_entry_hdr *p_hdr)
1089 {
1090 long delay;
1091 struct qla4_83xx_quad_entry *p_entry;
1092 struct qla4_83xx_poll *p_poll;
1093 uint32_t i;
1094
1095 p_poll = (struct qla4_83xx_poll *)
1096 ((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
1097 p_entry = (struct qla4_83xx_quad_entry *)
1098 ((char *)p_poll + sizeof(struct qla4_83xx_poll));
1099 delay = (long)p_hdr->delay;
1100
1101 for (i = 0; i < p_hdr->count; i++, p_entry++) {
1102 qla4_83xx_wr_reg_indirect(ha, p_entry->dr_addr,
1103 p_entry->dr_value);
1104 qla4_83xx_wr_reg_indirect(ha, p_entry->ar_addr,
1105 p_entry->ar_value);
1106 if (delay) {
1107 if (qla4_83xx_poll_reg(ha, p_entry->ar_addr, delay,
1108 p_poll->test_mask,
1109 p_poll->test_value)) {
1110 DEBUG2(ql4_printk(KERN_INFO, ha,
1111 "%s: Timeout Error: poll list, item_num %d, entry_num %d\n",
1112 __func__, i,
1113 ha->reset_tmplt.seq_index));
1114 }
1115 }
1116 }
1117 }
1118
1119 static void qla4_83xx_read_modify_write(struct scsi_qla_host *ha,
1120 struct qla4_83xx_reset_entry_hdr *p_hdr)
1121 {
1122 struct qla4_83xx_entry *p_entry;
1123 struct qla4_83xx_rmw *p_rmw_hdr;
1124 uint32_t i;
1125
1126 p_rmw_hdr = (struct qla4_83xx_rmw *)
1127 ((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
1128 p_entry = (struct qla4_83xx_entry *)
1129 ((char *)p_rmw_hdr + sizeof(struct qla4_83xx_rmw));
1130
1131 for (i = 0; i < p_hdr->count; i++, p_entry++) {
1132 qla4_83xx_rmw_crb_reg(ha, p_entry->arg1, p_entry->arg2,
1133 p_rmw_hdr);
1134 if (p_hdr->delay)
1135 udelay((uint32_t)(p_hdr->delay));
1136 }
1137 }
1138
1139 static void qla4_83xx_pause(struct scsi_qla_host *ha,
1140 struct qla4_83xx_reset_entry_hdr *p_hdr)
1141 {
1142 if (p_hdr->delay)
1143 mdelay((uint32_t)((long)p_hdr->delay));
1144 }
1145
1146 static void qla4_83xx_poll_read_list(struct scsi_qla_host *ha,
1147 struct qla4_83xx_reset_entry_hdr *p_hdr)
1148 {
1149 long delay;
1150 int index;
1151 struct qla4_83xx_quad_entry *p_entry;
1152 struct qla4_83xx_poll *p_poll;
1153 uint32_t i;
1154 uint32_t value;
1155
1156 p_poll = (struct qla4_83xx_poll *)
1157 ((char *)p_hdr + sizeof(struct qla4_83xx_reset_entry_hdr));
1158 p_entry = (struct qla4_83xx_quad_entry *)
1159 ((char *)p_poll + sizeof(struct qla4_83xx_poll));
1160 delay = (long)p_hdr->delay;
1161
1162 for (i = 0; i < p_hdr->count; i++, p_entry++) {
1163 qla4_83xx_wr_reg_indirect(ha, p_entry->ar_addr,
1164 p_entry->ar_value);
1165 if (delay) {
1166 if (qla4_83xx_poll_reg(ha, p_entry->ar_addr, delay,
1167 p_poll->test_mask,
1168 p_poll->test_value)) {
1169 DEBUG2(ql4_printk(KERN_INFO, ha,
1170 "%s: Timeout Error: poll list, Item_num %d, entry_num %d\n",
1171 __func__, i,
1172 ha->reset_tmplt.seq_index));
1173 } else {
1174 index = ha->reset_tmplt.array_index;
1175 qla4_83xx_rd_reg_indirect(ha, p_entry->dr_addr,
1176 &value);
1177 ha->reset_tmplt.array[index++] = value;
1178
1179 if (index == QLA83XX_MAX_RESET_SEQ_ENTRIES)
1180 ha->reset_tmplt.array_index = 1;
1181 }
1182 }
1183 }
1184 }
1185
1186 static void qla4_83xx_seq_end(struct scsi_qla_host *ha,
1187 struct qla4_83xx_reset_entry_hdr *p_hdr)
1188 {
1189 ha->reset_tmplt.seq_end = 1;
1190 }
1191
1192 static void qla4_83xx_template_end(struct scsi_qla_host *ha,
1193 struct qla4_83xx_reset_entry_hdr *p_hdr)
1194 {
1195 ha->reset_tmplt.template_end = 1;
1196
1197 if (ha->reset_tmplt.seq_error == 0) {
1198 DEBUG2(ql4_printk(KERN_INFO, ha,
1199 "%s: Reset sequence completed SUCCESSFULLY.\n",
1200 __func__));
1201 } else {
1202 ql4_printk(KERN_ERR, ha, "%s: Reset sequence completed with some timeout errors.\n",
1203 __func__);
1204 }
1205 }
1206
1207 /**
1208 * qla4_83xx_process_reset_template - Process reset template.
1209 *
1210 * Process all entries in reset template till entry with SEQ_END opcode,
1211 * which indicates end of the reset template processing. Each entry has a
1212 * Reset Entry header, entry opcode/command, with size of the entry, number
1213 * of entries in sub-sequence and delay in microsecs or timeout in millisecs.
1214 *
1215 * @ha : Pointer to adapter structure
1216 * @p_buff : Common reset entry header.
1217 **/
1218 static void qla4_83xx_process_reset_template(struct scsi_qla_host *ha,
1219 char *p_buff)
1220 {
1221 int index, entries;
1222 struct qla4_83xx_reset_entry_hdr *p_hdr;
1223 char *p_entry = p_buff;
1224
1225 ha->reset_tmplt.seq_end = 0;
1226 ha->reset_tmplt.template_end = 0;
1227 entries = ha->reset_tmplt.hdr->entries;
1228 index = ha->reset_tmplt.seq_index;
1229
1230 for (; (!ha->reset_tmplt.seq_end) && (index < entries); index++) {
1231
1232 p_hdr = (struct qla4_83xx_reset_entry_hdr *)p_entry;
1233 switch (p_hdr->cmd) {
1234 case OPCODE_NOP:
1235 break;
1236 case OPCODE_WRITE_LIST:
1237 qla4_83xx_write_list(ha, p_hdr);
1238 break;
1239 case OPCODE_READ_WRITE_LIST:
1240 qla4_83xx_read_write_list(ha, p_hdr);
1241 break;
1242 case OPCODE_POLL_LIST:
1243 qla4_83xx_poll_list(ha, p_hdr);
1244 break;
1245 case OPCODE_POLL_WRITE_LIST:
1246 qla4_83xx_poll_write_list(ha, p_hdr);
1247 break;
1248 case OPCODE_READ_MODIFY_WRITE:
1249 qla4_83xx_read_modify_write(ha, p_hdr);
1250 break;
1251 case OPCODE_SEQ_PAUSE:
1252 qla4_83xx_pause(ha, p_hdr);
1253 break;
1254 case OPCODE_SEQ_END:
1255 qla4_83xx_seq_end(ha, p_hdr);
1256 break;
1257 case OPCODE_TMPL_END:
1258 qla4_83xx_template_end(ha, p_hdr);
1259 break;
1260 case OPCODE_POLL_READ_LIST:
1261 qla4_83xx_poll_read_list(ha, p_hdr);
1262 break;
1263 default:
1264 ql4_printk(KERN_ERR, ha, "%s: Unknown command ==> 0x%04x on entry = %d\n",
1265 __func__, p_hdr->cmd, index);
1266 break;
1267 }
1268
1269 /* Set pointer to next entry in the sequence. */
1270 p_entry += p_hdr->size;
1271 }
1272
1273 ha->reset_tmplt.seq_index = index;
1274 }
1275
1276 static void qla4_83xx_process_stop_seq(struct scsi_qla_host *ha)
1277 {
1278 ha->reset_tmplt.seq_index = 0;
1279 qla4_83xx_process_reset_template(ha, ha->reset_tmplt.stop_offset);
1280
1281 if (ha->reset_tmplt.seq_end != 1)
1282 ql4_printk(KERN_ERR, ha, "%s: Abrupt STOP Sub-Sequence end.\n",
1283 __func__);
1284 }
1285
1286 static void qla4_83xx_process_start_seq(struct scsi_qla_host *ha)
1287 {
1288 qla4_83xx_process_reset_template(ha, ha->reset_tmplt.start_offset);
1289
1290 if (ha->reset_tmplt.template_end != 1)
1291 ql4_printk(KERN_ERR, ha, "%s: Abrupt START Sub-Sequence end.\n",
1292 __func__);
1293 }
1294
1295 static void qla4_83xx_process_init_seq(struct scsi_qla_host *ha)
1296 {
1297 qla4_83xx_process_reset_template(ha, ha->reset_tmplt.init_offset);
1298
1299 if (ha->reset_tmplt.seq_end != 1)
1300 ql4_printk(KERN_ERR, ha, "%s: Abrupt INIT Sub-Sequence end.\n",
1301 __func__);
1302 }
1303
1304 static int qla4_83xx_restart(struct scsi_qla_host *ha)
1305 {
1306 int ret_val = QLA_SUCCESS;
1307 uint32_t idc_ctrl;
1308
1309 qla4_83xx_process_stop_seq(ha);
1310
1311 /*
1312 * Collect minidump.
1313 * If IDC_CTRL BIT1 is set, clear it on going to INIT state and
1314 * don't collect minidump
1315 */
1316 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
1317 if (idc_ctrl & GRACEFUL_RESET_BIT1) {
1318 qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL,
1319 (idc_ctrl & ~GRACEFUL_RESET_BIT1));
1320 ql4_printk(KERN_INFO, ha, "%s: Graceful RESET: Not collecting minidump\n",
1321 __func__);
1322 } else {
1323 qla4_8xxx_get_minidump(ha);
1324 }
1325
1326 qla4_83xx_process_init_seq(ha);
1327
1328 if (qla4_83xx_copy_bootloader(ha)) {
1329 ql4_printk(KERN_ERR, ha, "%s: Copy bootloader, firmware restart failed!\n",
1330 __func__);
1331 ret_val = QLA_ERROR;
1332 goto exit_restart;
1333 }
1334
1335 qla4_83xx_wr_reg(ha, QLA83XX_FW_IMAGE_VALID, QLA83XX_BOOT_FROM_FLASH);
1336 qla4_83xx_process_start_seq(ha);
1337
1338 exit_restart:
1339 return ret_val;
1340 }
1341
1342 int qla4_83xx_start_firmware(struct scsi_qla_host *ha)
1343 {
1344 int ret_val = QLA_SUCCESS;
1345
1346 ret_val = qla4_83xx_restart(ha);
1347 if (ret_val == QLA_ERROR) {
1348 ql4_printk(KERN_ERR, ha, "%s: Restart error\n", __func__);
1349 goto exit_start_fw;
1350 } else {
1351 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Restart done\n",
1352 __func__));
1353 }
1354
1355 ret_val = qla4_83xx_check_cmd_peg_status(ha);
1356 if (ret_val == QLA_ERROR)
1357 ql4_printk(KERN_ERR, ha, "%s: Peg not initialized\n",
1358 __func__);
1359
1360 exit_start_fw:
1361 return ret_val;
1362 }
1363
1364 /*----------------------Interrupt Related functions ---------------------*/
1365
1366 static void qla4_83xx_disable_iocb_intrs(struct scsi_qla_host *ha)
1367 {
1368 if (test_and_clear_bit(AF_83XX_IOCB_INTR_ON, &ha->flags))
1369 qla4_8xxx_intr_disable(ha);
1370 }
1371
1372 static void qla4_83xx_disable_mbox_intrs(struct scsi_qla_host *ha)
1373 {
1374 uint32_t mb_int, ret;
1375
1376 if (test_and_clear_bit(AF_83XX_MBOX_INTR_ON, &ha->flags)) {
1377 ret = readl(&ha->qla4_83xx_reg->mbox_int);
1378 mb_int = ret & ~INT_ENABLE_FW_MB;
1379 writel(mb_int, &ha->qla4_83xx_reg->mbox_int);
1380 writel(1, &ha->qla4_83xx_reg->leg_int_mask);
1381 }
1382 }
1383
1384 void qla4_83xx_disable_intrs(struct scsi_qla_host *ha)
1385 {
1386 qla4_83xx_disable_mbox_intrs(ha);
1387 qla4_83xx_disable_iocb_intrs(ha);
1388 }
1389
1390 static void qla4_83xx_enable_iocb_intrs(struct scsi_qla_host *ha)
1391 {
1392 if (!test_bit(AF_83XX_IOCB_INTR_ON, &ha->flags)) {
1393 qla4_8xxx_intr_enable(ha);
1394 set_bit(AF_83XX_IOCB_INTR_ON, &ha->flags);
1395 }
1396 }
1397
1398 void qla4_83xx_enable_mbox_intrs(struct scsi_qla_host *ha)
1399 {
1400 uint32_t mb_int;
1401
1402 if (!test_bit(AF_83XX_MBOX_INTR_ON, &ha->flags)) {
1403 mb_int = INT_ENABLE_FW_MB;
1404 writel(mb_int, &ha->qla4_83xx_reg->mbox_int);
1405 writel(0, &ha->qla4_83xx_reg->leg_int_mask);
1406 set_bit(AF_83XX_MBOX_INTR_ON, &ha->flags);
1407 }
1408 }
1409
1410
1411 void qla4_83xx_enable_intrs(struct scsi_qla_host *ha)
1412 {
1413 qla4_83xx_enable_mbox_intrs(ha);
1414 qla4_83xx_enable_iocb_intrs(ha);
1415 }
1416
1417
1418 void qla4_83xx_queue_mbox_cmd(struct scsi_qla_host *ha, uint32_t *mbx_cmd,
1419 int incount)
1420 {
1421 int i;
1422
1423 /* Load all mailbox registers, except mailbox 0. */
1424 for (i = 1; i < incount; i++)
1425 writel(mbx_cmd[i], &ha->qla4_83xx_reg->mailbox_in[i]);
1426
1427 writel(mbx_cmd[0], &ha->qla4_83xx_reg->mailbox_in[0]);
1428
1429 /* Set Host Interrupt register to 1, to tell the firmware that
1430 * a mailbox command is pending. Firmware after reading the
1431 * mailbox command, clears the host interrupt register */
1432 writel(HINT_MBX_INT_PENDING, &ha->qla4_83xx_reg->host_intr);
1433 }
1434
1435 void qla4_83xx_process_mbox_intr(struct scsi_qla_host *ha, int outcount)
1436 {
1437 int intr_status;
1438
1439 intr_status = readl(&ha->qla4_83xx_reg->risc_intr);
1440 if (intr_status) {
1441 ha->mbox_status_count = outcount;
1442 ha->isp_ops->interrupt_service_routine(ha, intr_status);
1443 }
1444 }
1445
1446 /**
1447 * qla4_83xx_isp_reset - Resets ISP and aborts all outstanding commands.
1448 * @ha: pointer to host adapter structure.
1449 **/
1450 int qla4_83xx_isp_reset(struct scsi_qla_host *ha)
1451 {
1452 int rval;
1453 uint32_t dev_state;
1454
1455 ha->isp_ops->idc_lock(ha);
1456 dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
1457
1458 if (ql4xdontresethba)
1459 qla4_83xx_set_idc_dontreset(ha);
1460
1461 if (dev_state == QLA8XXX_DEV_READY) {
1462 /* If IDC_CTRL DONTRESETHBA_BIT0 is set dont do reset
1463 * recovery */
1464 if (qla4_83xx_idc_dontreset(ha) == DONTRESET_BIT0) {
1465 ql4_printk(KERN_ERR, ha, "%s: Reset recovery disabled\n",
1466 __func__);
1467 rval = QLA_ERROR;
1468 goto exit_isp_reset;
1469 }
1470
1471 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: HW State: NEED RESET\n",
1472 __func__));
1473 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
1474 QLA8XXX_DEV_NEED_RESET);
1475
1476 } else {
1477 /* If device_state is NEED_RESET, go ahead with
1478 * Reset,irrespective of ql4xdontresethba. This is to allow a
1479 * non-reset-owner to force a reset. Non-reset-owner sets
1480 * the IDC_CTRL BIT0 to prevent Reset-owner from doing a Reset
1481 * and then forces a Reset by setting device_state to
1482 * NEED_RESET. */
1483 DEBUG2(ql4_printk(KERN_INFO, ha,
1484 "%s: HW state already set to NEED_RESET\n",
1485 __func__));
1486 }
1487
1488 /* For ISP8324 and ISP8042, Reset owner is NIC, iSCSI or FCOE based on
1489 * priority and which drivers are present. Unlike ISP8022, the function
1490 * setting NEED_RESET, may not be the Reset owner. */
1491 if (qla4_83xx_can_perform_reset(ha))
1492 set_bit(AF_8XXX_RST_OWNER, &ha->flags);
1493
1494 ha->isp_ops->idc_unlock(ha);
1495 rval = qla4_8xxx_device_state_handler(ha);
1496
1497 ha->isp_ops->idc_lock(ha);
1498 qla4_8xxx_clear_rst_ready(ha);
1499 exit_isp_reset:
1500 ha->isp_ops->idc_unlock(ha);
1501
1502 if (rval == QLA_SUCCESS)
1503 clear_bit(AF_FW_RECOVERY, &ha->flags);
1504
1505 return rval;
1506 }
1507
1508 static void qla4_83xx_dump_pause_control_regs(struct scsi_qla_host *ha)
1509 {
1510 u32 val = 0, val1 = 0;
1511 int i, status = QLA_SUCCESS;
1512
1513 status = qla4_83xx_rd_reg_indirect(ha, QLA83XX_SRE_SHIM_CONTROL, &val);
1514 DEBUG2(ql4_printk(KERN_INFO, ha, "SRE-Shim Ctrl:0x%x\n", val));
1515
1516 /* Port 0 Rx Buffer Pause Threshold Registers. */
1517 DEBUG2(ql4_printk(KERN_INFO, ha,
1518 "Port 0 Rx Buffer Pause Threshold Registers[TC7..TC0]:"));
1519 for (i = 0; i < 8; i++) {
1520 status = qla4_83xx_rd_reg_indirect(ha,
1521 QLA83XX_PORT0_RXB_PAUSE_THRS + (i * 0x4), &val);
1522 DEBUG2(pr_info("0x%x ", val));
1523 }
1524
1525 DEBUG2(pr_info("\n"));
1526
1527 /* Port 1 Rx Buffer Pause Threshold Registers. */
1528 DEBUG2(ql4_printk(KERN_INFO, ha,
1529 "Port 1 Rx Buffer Pause Threshold Registers[TC7..TC0]:"));
1530 for (i = 0; i < 8; i++) {
1531 status = qla4_83xx_rd_reg_indirect(ha,
1532 QLA83XX_PORT1_RXB_PAUSE_THRS + (i * 0x4), &val);
1533 DEBUG2(pr_info("0x%x ", val));
1534 }
1535
1536 DEBUG2(pr_info("\n"));
1537
1538 /* Port 0 RxB Traffic Class Max Cell Registers. */
1539 DEBUG2(ql4_printk(KERN_INFO, ha,
1540 "Port 0 RxB Traffic Class Max Cell Registers[3..0]:"));
1541 for (i = 0; i < 4; i++) {
1542 status = qla4_83xx_rd_reg_indirect(ha,
1543 QLA83XX_PORT0_RXB_TC_MAX_CELL + (i * 0x4), &val);
1544 DEBUG2(pr_info("0x%x ", val));
1545 }
1546
1547 DEBUG2(pr_info("\n"));
1548
1549 /* Port 1 RxB Traffic Class Max Cell Registers. */
1550 DEBUG2(ql4_printk(KERN_INFO, ha,
1551 "Port 1 RxB Traffic Class Max Cell Registers[3..0]:"));
1552 for (i = 0; i < 4; i++) {
1553 status = qla4_83xx_rd_reg_indirect(ha,
1554 QLA83XX_PORT1_RXB_TC_MAX_CELL + (i * 0x4), &val);
1555 DEBUG2(pr_info("0x%x ", val));
1556 }
1557
1558 DEBUG2(pr_info("\n"));
1559
1560 /* Port 0 RxB Rx Traffic Class Stats. */
1561 DEBUG2(ql4_printk(KERN_INFO, ha,
1562 "Port 0 RxB Rx Traffic Class Stats [TC7..TC0]"));
1563 for (i = 7; i >= 0; i--) {
1564 status = qla4_83xx_rd_reg_indirect(ha,
1565 QLA83XX_PORT0_RXB_TC_STATS,
1566 &val);
1567 val &= ~(0x7 << 29); /* Reset bits 29 to 31 */
1568 qla4_83xx_wr_reg_indirect(ha, QLA83XX_PORT0_RXB_TC_STATS,
1569 (val | (i << 29)));
1570 status = qla4_83xx_rd_reg_indirect(ha,
1571 QLA83XX_PORT0_RXB_TC_STATS,
1572 &val);
1573 DEBUG2(pr_info("0x%x ", val));
1574 }
1575
1576 DEBUG2(pr_info("\n"));
1577
1578 /* Port 1 RxB Rx Traffic Class Stats. */
1579 DEBUG2(ql4_printk(KERN_INFO, ha,
1580 "Port 1 RxB Rx Traffic Class Stats [TC7..TC0]"));
1581 for (i = 7; i >= 0; i--) {
1582 status = qla4_83xx_rd_reg_indirect(ha,
1583 QLA83XX_PORT1_RXB_TC_STATS,
1584 &val);
1585 val &= ~(0x7 << 29); /* Reset bits 29 to 31 */
1586 qla4_83xx_wr_reg_indirect(ha, QLA83XX_PORT1_RXB_TC_STATS,
1587 (val | (i << 29)));
1588 status = qla4_83xx_rd_reg_indirect(ha,
1589 QLA83XX_PORT1_RXB_TC_STATS,
1590 &val);
1591 DEBUG2(pr_info("0x%x ", val));
1592 }
1593
1594 DEBUG2(pr_info("\n"));
1595
1596 status = qla4_83xx_rd_reg_indirect(ha, QLA83XX_PORT2_IFB_PAUSE_THRS,
1597 &val);
1598 status = qla4_83xx_rd_reg_indirect(ha, QLA83XX_PORT3_IFB_PAUSE_THRS,
1599 &val1);
1600
1601 DEBUG2(ql4_printk(KERN_INFO, ha,
1602 "IFB-Pause Thresholds: Port 2:0x%x, Port 3:0x%x\n",
1603 val, val1));
1604 }
1605
1606 static void __qla4_83xx_disable_pause(struct scsi_qla_host *ha)
1607 {
1608 int i;
1609
1610 /* set SRE-Shim Control Register */
1611 qla4_83xx_wr_reg_indirect(ha, QLA83XX_SRE_SHIM_CONTROL,
1612 QLA83XX_SET_PAUSE_VAL);
1613
1614 for (i = 0; i < 8; i++) {
1615 /* Port 0 Rx Buffer Pause Threshold Registers. */
1616 qla4_83xx_wr_reg_indirect(ha,
1617 QLA83XX_PORT0_RXB_PAUSE_THRS + (i * 0x4),
1618 QLA83XX_SET_PAUSE_VAL);
1619 /* Port 1 Rx Buffer Pause Threshold Registers. */
1620 qla4_83xx_wr_reg_indirect(ha,
1621 QLA83XX_PORT1_RXB_PAUSE_THRS + (i * 0x4),
1622 QLA83XX_SET_PAUSE_VAL);
1623 }
1624
1625 for (i = 0; i < 4; i++) {
1626 /* Port 0 RxB Traffic Class Max Cell Registers. */
1627 qla4_83xx_wr_reg_indirect(ha,
1628 QLA83XX_PORT0_RXB_TC_MAX_CELL + (i * 0x4),
1629 QLA83XX_SET_TC_MAX_CELL_VAL);
1630 /* Port 1 RxB Traffic Class Max Cell Registers. */
1631 qla4_83xx_wr_reg_indirect(ha,
1632 QLA83XX_PORT1_RXB_TC_MAX_CELL + (i * 0x4),
1633 QLA83XX_SET_TC_MAX_CELL_VAL);
1634 }
1635
1636 qla4_83xx_wr_reg_indirect(ha, QLA83XX_PORT2_IFB_PAUSE_THRS,
1637 QLA83XX_SET_PAUSE_VAL);
1638 qla4_83xx_wr_reg_indirect(ha, QLA83XX_PORT3_IFB_PAUSE_THRS,
1639 QLA83XX_SET_PAUSE_VAL);
1640
1641 ql4_printk(KERN_INFO, ha, "Disabled pause frames successfully.\n");
1642 }
1643
1644 /**
1645 * qla4_83xx_eport_init - Initialize EPort.
1646 * @ha: Pointer to host adapter structure.
1647 *
1648 * If EPort hardware is in reset state before disabling pause, there would be
1649 * serious hardware wedging issues. To prevent this perform eport init everytime
1650 * before disabling pause frames.
1651 **/
1652 static void qla4_83xx_eport_init(struct scsi_qla_host *ha)
1653 {
1654 /* Clear the 8 registers */
1655 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_REG, 0x0);
1656 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_PORT0, 0x0);
1657 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_PORT1, 0x0);
1658 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_PORT2, 0x0);
1659 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_PORT3, 0x0);
1660 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_SRE_SHIM, 0x0);
1661 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_EPG_SHIM, 0x0);
1662 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_ETHER_PCS, 0x0);
1663
1664 /* Write any value to Reset Control register */
1665 qla4_83xx_wr_reg_indirect(ha, QLA83XX_RESET_CONTROL, 0xFF);
1666
1667 ql4_printk(KERN_INFO, ha, "EPORT is out of reset.\n");
1668 }
1669
1670 void qla4_83xx_disable_pause(struct scsi_qla_host *ha)
1671 {
1672 ha->isp_ops->idc_lock(ha);
1673 /* Before disabling pause frames, ensure that eport is not in reset */
1674 qla4_83xx_eport_init(ha);
1675 qla4_83xx_dump_pause_control_regs(ha);
1676 __qla4_83xx_disable_pause(ha);
1677 ha->isp_ops->idc_unlock(ha);
1678 }
1679
1680 /**
1681 * qla4_83xx_is_detached - Check if we are marked invisible.
1682 * @ha: Pointer to host adapter structure.
1683 **/
1684 int qla4_83xx_is_detached(struct scsi_qla_host *ha)
1685 {
1686 uint32_t drv_active;
1687
1688 drv_active = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DRV_ACTIVE);
1689
1690 if (test_bit(AF_INIT_DONE, &ha->flags) &&
1691 !(drv_active & (1 << ha->func_num))) {
1692 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: drv_active = 0x%X\n",
1693 __func__, drv_active));
1694 return QLA_SUCCESS;
1695 }
1696
1697 return QLA_ERROR;
1698 }
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