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[SCSI] lpfc 8.1.1 : Add polled-mode support
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / scsi / lpfc / lpfc_sli.c
1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2005 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
6 * www.emulex.com *
7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
8 * *
9 * This program is free software; you can redistribute it and/or *
10 * modify it under the terms of version 2 of the GNU General *
11 * Public License as published by the Free Software Foundation. *
12 * This program is distributed in the hope that it will be useful. *
13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17 * TO BE LEGALLY INVALID. See the GNU General Public License for *
18 * more details, a copy of which can be found in the file COPYING *
19 * included with this package. *
20 *******************************************************************/
21
22 #include <linux/blkdev.h>
23 #include <linux/pci.h>
24 #include <linux/interrupt.h>
25 #include <linux/delay.h>
26
27 #include <scsi/scsi.h>
28 #include <scsi/scsi_cmnd.h>
29 #include <scsi/scsi_device.h>
30 #include <scsi/scsi_host.h>
31 #include <scsi/scsi_transport_fc.h>
32
33 #include "lpfc_hw.h"
34 #include "lpfc_sli.h"
35 #include "lpfc_disc.h"
36 #include "lpfc_scsi.h"
37 #include "lpfc.h"
38 #include "lpfc_crtn.h"
39 #include "lpfc_logmsg.h"
40 #include "lpfc_compat.h"
41
42 /*
43 * Define macro to log: Mailbox command x%x cannot issue Data
44 * This allows multiple uses of lpfc_msgBlk0311
45 * w/o perturbing log msg utility.
46 */
47 #define LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag) \
48 lpfc_printf_log(phba, \
49 KERN_INFO, \
50 LOG_MBOX | LOG_SLI, \
51 "%d:0311 Mailbox command x%x cannot issue " \
52 "Data: x%x x%x x%x\n", \
53 phba->brd_no, \
54 mb->mbxCommand, \
55 phba->hba_state, \
56 psli->sli_flag, \
57 flag);
58
59
60 /* There are only four IOCB completion types. */
61 typedef enum _lpfc_iocb_type {
62 LPFC_UNKNOWN_IOCB,
63 LPFC_UNSOL_IOCB,
64 LPFC_SOL_IOCB,
65 LPFC_ABORT_IOCB
66 } lpfc_iocb_type;
67
68 struct lpfc_iocbq *
69 lpfc_sli_get_iocbq(struct lpfc_hba * phba)
70 {
71 struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
72 struct lpfc_iocbq * iocbq = NULL;
73
74 list_remove_head(lpfc_iocb_list, iocbq, struct lpfc_iocbq, list);
75 return iocbq;
76 }
77
78 void
79 lpfc_sli_release_iocbq(struct lpfc_hba * phba, struct lpfc_iocbq * iocbq)
80 {
81 size_t start_clean = (size_t)(&((struct lpfc_iocbq *)NULL)->iocb);
82
83 /*
84 * Clean all volatile data fields, preserve iotag and node struct.
85 */
86 memset((char*)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
87 list_add_tail(&iocbq->list, &phba->lpfc_iocb_list);
88 }
89
90 /*
91 * Translate the iocb command to an iocb command type used to decide the final
92 * disposition of each completed IOCB.
93 */
94 static lpfc_iocb_type
95 lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd)
96 {
97 lpfc_iocb_type type = LPFC_UNKNOWN_IOCB;
98
99 if (iocb_cmnd > CMD_MAX_IOCB_CMD)
100 return 0;
101
102 switch (iocb_cmnd) {
103 case CMD_XMIT_SEQUENCE_CR:
104 case CMD_XMIT_SEQUENCE_CX:
105 case CMD_XMIT_BCAST_CN:
106 case CMD_XMIT_BCAST_CX:
107 case CMD_ELS_REQUEST_CR:
108 case CMD_ELS_REQUEST_CX:
109 case CMD_CREATE_XRI_CR:
110 case CMD_CREATE_XRI_CX:
111 case CMD_GET_RPI_CN:
112 case CMD_XMIT_ELS_RSP_CX:
113 case CMD_GET_RPI_CR:
114 case CMD_FCP_IWRITE_CR:
115 case CMD_FCP_IWRITE_CX:
116 case CMD_FCP_IREAD_CR:
117 case CMD_FCP_IREAD_CX:
118 case CMD_FCP_ICMND_CR:
119 case CMD_FCP_ICMND_CX:
120 case CMD_ADAPTER_MSG:
121 case CMD_ADAPTER_DUMP:
122 case CMD_XMIT_SEQUENCE64_CR:
123 case CMD_XMIT_SEQUENCE64_CX:
124 case CMD_XMIT_BCAST64_CN:
125 case CMD_XMIT_BCAST64_CX:
126 case CMD_ELS_REQUEST64_CR:
127 case CMD_ELS_REQUEST64_CX:
128 case CMD_FCP_IWRITE64_CR:
129 case CMD_FCP_IWRITE64_CX:
130 case CMD_FCP_IREAD64_CR:
131 case CMD_FCP_IREAD64_CX:
132 case CMD_FCP_ICMND64_CR:
133 case CMD_FCP_ICMND64_CX:
134 case CMD_GEN_REQUEST64_CR:
135 case CMD_GEN_REQUEST64_CX:
136 case CMD_XMIT_ELS_RSP64_CX:
137 type = LPFC_SOL_IOCB;
138 break;
139 case CMD_ABORT_XRI_CN:
140 case CMD_ABORT_XRI_CX:
141 case CMD_CLOSE_XRI_CN:
142 case CMD_CLOSE_XRI_CX:
143 case CMD_XRI_ABORTED_CX:
144 case CMD_ABORT_MXRI64_CN:
145 type = LPFC_ABORT_IOCB;
146 break;
147 case CMD_RCV_SEQUENCE_CX:
148 case CMD_RCV_ELS_REQ_CX:
149 case CMD_RCV_SEQUENCE64_CX:
150 case CMD_RCV_ELS_REQ64_CX:
151 type = LPFC_UNSOL_IOCB;
152 break;
153 default:
154 type = LPFC_UNKNOWN_IOCB;
155 break;
156 }
157
158 return type;
159 }
160
161 static int
162 lpfc_sli_ring_map(struct lpfc_hba * phba, LPFC_MBOXQ_t *pmb)
163 {
164 struct lpfc_sli *psli = &phba->sli;
165 MAILBOX_t *pmbox = &pmb->mb;
166 int i, rc;
167
168 for (i = 0; i < psli->num_rings; i++) {
169 phba->hba_state = LPFC_INIT_MBX_CMDS;
170 lpfc_config_ring(phba, i, pmb);
171 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
172 if (rc != MBX_SUCCESS) {
173 lpfc_printf_log(phba,
174 KERN_ERR,
175 LOG_INIT,
176 "%d:0446 Adapter failed to init, "
177 "mbxCmd x%x CFG_RING, mbxStatus x%x, "
178 "ring %d\n",
179 phba->brd_no,
180 pmbox->mbxCommand,
181 pmbox->mbxStatus,
182 i);
183 phba->hba_state = LPFC_HBA_ERROR;
184 return -ENXIO;
185 }
186 }
187 return 0;
188 }
189
190 static int
191 lpfc_sli_ringtxcmpl_put(struct lpfc_hba * phba,
192 struct lpfc_sli_ring * pring, struct lpfc_iocbq * piocb)
193 {
194 uint16_t iotag;
195
196 list_add_tail(&piocb->list, &pring->txcmplq);
197 pring->txcmplq_cnt++;
198 if (unlikely(pring->ringno == LPFC_ELS_RING))
199 mod_timer(&phba->els_tmofunc,
200 jiffies + HZ * (phba->fc_ratov << 1));
201
202 if (pring->fast_lookup) {
203 /* Setup fast lookup based on iotag for completion */
204 iotag = piocb->iocb.ulpIoTag;
205 if (iotag && (iotag < pring->fast_iotag))
206 *(pring->fast_lookup + iotag) = piocb;
207 else {
208
209 /* Cmd ring <ringno> put: iotag <iotag> greater then
210 configured max <fast_iotag> wd0 <icmd> */
211 lpfc_printf_log(phba,
212 KERN_ERR,
213 LOG_SLI,
214 "%d:0316 Cmd ring %d put: iotag x%x "
215 "greater then configured max x%x "
216 "wd0 x%x\n",
217 phba->brd_no,
218 pring->ringno, iotag,
219 pring->fast_iotag,
220 *(((uint32_t *)(&piocb->iocb)) + 7));
221 }
222 }
223 return (0);
224 }
225
226 static struct lpfc_iocbq *
227 lpfc_sli_ringtx_get(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
228 {
229 struct list_head *dlp;
230 struct lpfc_iocbq *cmd_iocb;
231
232 dlp = &pring->txq;
233 cmd_iocb = NULL;
234 list_remove_head((&pring->txq), cmd_iocb,
235 struct lpfc_iocbq,
236 list);
237 if (cmd_iocb) {
238 /* If the first ptr is not equal to the list header,
239 * deque the IOCBQ_t and return it.
240 */
241 pring->txq_cnt--;
242 }
243 return (cmd_iocb);
244 }
245
246 static IOCB_t *
247 lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
248 {
249 struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
250 uint32_t max_cmd_idx = pring->numCiocb;
251 IOCB_t *iocb = NULL;
252
253 if ((pring->next_cmdidx == pring->cmdidx) &&
254 (++pring->next_cmdidx >= max_cmd_idx))
255 pring->next_cmdidx = 0;
256
257 if (unlikely(pring->local_getidx == pring->next_cmdidx)) {
258
259 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
260
261 if (unlikely(pring->local_getidx >= max_cmd_idx)) {
262 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
263 "%d:0315 Ring %d issue: portCmdGet %d "
264 "is bigger then cmd ring %d\n",
265 phba->brd_no, pring->ringno,
266 pring->local_getidx, max_cmd_idx);
267
268 phba->hba_state = LPFC_HBA_ERROR;
269 /*
270 * All error attention handlers are posted to
271 * worker thread
272 */
273 phba->work_ha |= HA_ERATT;
274 phba->work_hs = HS_FFER3;
275 if (phba->work_wait)
276 wake_up(phba->work_wait);
277
278 return NULL;
279 }
280
281 if (pring->local_getidx == pring->next_cmdidx)
282 return NULL;
283 }
284
285 iocb = IOCB_ENTRY(pring->cmdringaddr, pring->cmdidx);
286
287 return iocb;
288 }
289
290 uint16_t
291 lpfc_sli_next_iotag(struct lpfc_hba * phba, struct lpfc_iocbq * iocbq)
292 {
293 struct lpfc_iocbq ** new_arr;
294 struct lpfc_iocbq ** old_arr;
295 size_t new_len;
296 struct lpfc_sli *psli = &phba->sli;
297 uint16_t iotag;
298
299 spin_lock_irq(phba->host->host_lock);
300 iotag = psli->last_iotag;
301 if(++iotag < psli->iocbq_lookup_len) {
302 psli->last_iotag = iotag;
303 psli->iocbq_lookup[iotag] = iocbq;
304 spin_unlock_irq(phba->host->host_lock);
305 iocbq->iotag = iotag;
306 return iotag;
307 }
308 else if (psli->iocbq_lookup_len < (0xffff
309 - LPFC_IOCBQ_LOOKUP_INCREMENT)) {
310 new_len = psli->iocbq_lookup_len + LPFC_IOCBQ_LOOKUP_INCREMENT;
311 spin_unlock_irq(phba->host->host_lock);
312 new_arr = kmalloc(new_len * sizeof (struct lpfc_iocbq *),
313 GFP_KERNEL);
314 if (new_arr) {
315 memset((char *)new_arr, 0,
316 new_len * sizeof (struct lpfc_iocbq *));
317 spin_lock_irq(phba->host->host_lock);
318 old_arr = psli->iocbq_lookup;
319 if (new_len <= psli->iocbq_lookup_len) {
320 /* highly unprobable case */
321 kfree(new_arr);
322 iotag = psli->last_iotag;
323 if(++iotag < psli->iocbq_lookup_len) {
324 psli->last_iotag = iotag;
325 psli->iocbq_lookup[iotag] = iocbq;
326 spin_unlock_irq(phba->host->host_lock);
327 iocbq->iotag = iotag;
328 return iotag;
329 }
330 spin_unlock_irq(phba->host->host_lock);
331 return 0;
332 }
333 if (psli->iocbq_lookup)
334 memcpy(new_arr, old_arr,
335 ((psli->last_iotag + 1) *
336 sizeof (struct lpfc_iocbq *)));
337 psli->iocbq_lookup = new_arr;
338 psli->iocbq_lookup_len = new_len;
339 psli->last_iotag = iotag;
340 psli->iocbq_lookup[iotag] = iocbq;
341 spin_unlock_irq(phba->host->host_lock);
342 iocbq->iotag = iotag;
343 kfree(old_arr);
344 return iotag;
345 }
346 }
347
348 lpfc_printf_log(phba, KERN_ERR,LOG_SLI,
349 "%d:0318 Failed to allocate IOTAG.last IOTAG is %d\n",
350 phba->brd_no, psli->last_iotag);
351
352 return 0;
353 }
354
355 static void
356 lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
357 IOCB_t *iocb, struct lpfc_iocbq *nextiocb)
358 {
359 /*
360 * Set up an iotag
361 */
362 nextiocb->iocb.ulpIoTag = (nextiocb->iocb_cmpl) ? nextiocb->iotag : 0;
363
364 /*
365 * Issue iocb command to adapter
366 */
367 lpfc_sli_pcimem_bcopy(&nextiocb->iocb, iocb, sizeof (IOCB_t));
368 wmb();
369 pring->stats.iocb_cmd++;
370
371 /*
372 * If there is no completion routine to call, we can release the
373 * IOCB buffer back right now. For IOCBs, like QUE_RING_BUF,
374 * that have no rsp ring completion, iocb_cmpl MUST be NULL.
375 */
376 if (nextiocb->iocb_cmpl)
377 lpfc_sli_ringtxcmpl_put(phba, pring, nextiocb);
378 else
379 lpfc_sli_release_iocbq(phba, nextiocb);
380
381 /*
382 * Let the HBA know what IOCB slot will be the next one the
383 * driver will put a command into.
384 */
385 pring->cmdidx = pring->next_cmdidx;
386 writel(pring->cmdidx, phba->MBslimaddr
387 + (SLIMOFF + (pring->ringno * 2)) * 4);
388 }
389
390 static void
391 lpfc_sli_update_full_ring(struct lpfc_hba * phba,
392 struct lpfc_sli_ring *pring)
393 {
394 int ringno = pring->ringno;
395
396 pring->flag |= LPFC_CALL_RING_AVAILABLE;
397
398 wmb();
399
400 /*
401 * Set ring 'ringno' to SET R0CE_REQ in Chip Att register.
402 * The HBA will tell us when an IOCB entry is available.
403 */
404 writel((CA_R0ATT|CA_R0CE_REQ) << (ringno*4), phba->CAregaddr);
405 readl(phba->CAregaddr); /* flush */
406
407 pring->stats.iocb_cmd_full++;
408 }
409
410 static void
411 lpfc_sli_update_ring(struct lpfc_hba * phba,
412 struct lpfc_sli_ring *pring)
413 {
414 int ringno = pring->ringno;
415
416 /*
417 * Tell the HBA that there is work to do in this ring.
418 */
419 wmb();
420 writel(CA_R0ATT << (ringno * 4), phba->CAregaddr);
421 readl(phba->CAregaddr); /* flush */
422 }
423
424 static void
425 lpfc_sli_resume_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
426 {
427 IOCB_t *iocb;
428 struct lpfc_iocbq *nextiocb;
429
430 /*
431 * Check to see if:
432 * (a) there is anything on the txq to send
433 * (b) link is up
434 * (c) link attention events can be processed (fcp ring only)
435 * (d) IOCB processing is not blocked by the outstanding mbox command.
436 */
437 if (pring->txq_cnt &&
438 (phba->hba_state > LPFC_LINK_DOWN) &&
439 (pring->ringno != phba->sli.fcp_ring ||
440 phba->sli.sli_flag & LPFC_PROCESS_LA) &&
441 !(pring->flag & LPFC_STOP_IOCB_MBX)) {
442
443 while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
444 (nextiocb = lpfc_sli_ringtx_get(phba, pring)))
445 lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
446
447 if (iocb)
448 lpfc_sli_update_ring(phba, pring);
449 else
450 lpfc_sli_update_full_ring(phba, pring);
451 }
452
453 return;
454 }
455
456 /* lpfc_sli_turn_on_ring is only called by lpfc_sli_handle_mb_event below */
457 static void
458 lpfc_sli_turn_on_ring(struct lpfc_hba * phba, int ringno)
459 {
460 struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[ringno];
461
462 /* If the ring is active, flag it */
463 if (phba->sli.ring[ringno].cmdringaddr) {
464 if (phba->sli.ring[ringno].flag & LPFC_STOP_IOCB_MBX) {
465 phba->sli.ring[ringno].flag &= ~LPFC_STOP_IOCB_MBX;
466 /*
467 * Force update of the local copy of cmdGetInx
468 */
469 phba->sli.ring[ringno].local_getidx
470 = le32_to_cpu(pgp->cmdGetInx);
471 spin_lock_irq(phba->host->host_lock);
472 lpfc_sli_resume_iocb(phba, &phba->sli.ring[ringno]);
473 spin_unlock_irq(phba->host->host_lock);
474 }
475 }
476 }
477
478 static int
479 lpfc_sli_chk_mbx_command(uint8_t mbxCommand)
480 {
481 uint8_t ret;
482
483 switch (mbxCommand) {
484 case MBX_LOAD_SM:
485 case MBX_READ_NV:
486 case MBX_WRITE_NV:
487 case MBX_RUN_BIU_DIAG:
488 case MBX_INIT_LINK:
489 case MBX_DOWN_LINK:
490 case MBX_CONFIG_LINK:
491 case MBX_CONFIG_RING:
492 case MBX_RESET_RING:
493 case MBX_READ_CONFIG:
494 case MBX_READ_RCONFIG:
495 case MBX_READ_SPARM:
496 case MBX_READ_STATUS:
497 case MBX_READ_RPI:
498 case MBX_READ_XRI:
499 case MBX_READ_REV:
500 case MBX_READ_LNK_STAT:
501 case MBX_REG_LOGIN:
502 case MBX_UNREG_LOGIN:
503 case MBX_READ_LA:
504 case MBX_CLEAR_LA:
505 case MBX_DUMP_MEMORY:
506 case MBX_DUMP_CONTEXT:
507 case MBX_RUN_DIAGS:
508 case MBX_RESTART:
509 case MBX_UPDATE_CFG:
510 case MBX_DOWN_LOAD:
511 case MBX_DEL_LD_ENTRY:
512 case MBX_RUN_PROGRAM:
513 case MBX_SET_MASK:
514 case MBX_SET_SLIM:
515 case MBX_UNREG_D_ID:
516 case MBX_CONFIG_FARP:
517 case MBX_LOAD_AREA:
518 case MBX_RUN_BIU_DIAG64:
519 case MBX_CONFIG_PORT:
520 case MBX_READ_SPARM64:
521 case MBX_READ_RPI64:
522 case MBX_REG_LOGIN64:
523 case MBX_READ_LA64:
524 case MBX_FLASH_WR_ULA:
525 case MBX_SET_DEBUG:
526 case MBX_LOAD_EXP_ROM:
527 ret = mbxCommand;
528 break;
529 default:
530 ret = MBX_SHUTDOWN;
531 break;
532 }
533 return (ret);
534 }
535 static void
536 lpfc_sli_wake_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
537 {
538 wait_queue_head_t *pdone_q;
539
540 /*
541 * If pdone_q is empty, the driver thread gave up waiting and
542 * continued running.
543 */
544 pdone_q = (wait_queue_head_t *) pmboxq->context1;
545 if (pdone_q)
546 wake_up_interruptible(pdone_q);
547 return;
548 }
549
550 void
551 lpfc_sli_def_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
552 {
553 struct lpfc_dmabuf *mp;
554 mp = (struct lpfc_dmabuf *) (pmb->context1);
555 if (mp) {
556 lpfc_mbuf_free(phba, mp->virt, mp->phys);
557 kfree(mp);
558 }
559 mempool_free( pmb, phba->mbox_mem_pool);
560 return;
561 }
562
563 int
564 lpfc_sli_handle_mb_event(struct lpfc_hba * phba)
565 {
566 MAILBOX_t *mbox;
567 MAILBOX_t *pmbox;
568 LPFC_MBOXQ_t *pmb;
569 struct lpfc_sli *psli;
570 int i, rc;
571 uint32_t process_next;
572
573 psli = &phba->sli;
574 /* We should only get here if we are in SLI2 mode */
575 if (!(phba->sli.sli_flag & LPFC_SLI2_ACTIVE)) {
576 return (1);
577 }
578
579 phba->sli.slistat.mbox_event++;
580
581 /* Get a Mailbox buffer to setup mailbox commands for callback */
582 if ((pmb = phba->sli.mbox_active)) {
583 pmbox = &pmb->mb;
584 mbox = &phba->slim2p->mbx;
585
586 /* First check out the status word */
587 lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof (uint32_t));
588
589 /* Sanity check to ensure the host owns the mailbox */
590 if (pmbox->mbxOwner != OWN_HOST) {
591 /* Lets try for a while */
592 for (i = 0; i < 10240; i++) {
593 /* First copy command data */
594 lpfc_sli_pcimem_bcopy(mbox, pmbox,
595 sizeof (uint32_t));
596 if (pmbox->mbxOwner == OWN_HOST)
597 goto mbout;
598 }
599 /* Stray Mailbox Interrupt, mbxCommand <cmd> mbxStatus
600 <status> */
601 lpfc_printf_log(phba,
602 KERN_ERR,
603 LOG_MBOX | LOG_SLI,
604 "%d:0304 Stray Mailbox Interrupt "
605 "mbxCommand x%x mbxStatus x%x\n",
606 phba->brd_no,
607 pmbox->mbxCommand,
608 pmbox->mbxStatus);
609
610 spin_lock_irq(phba->host->host_lock);
611 phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE;
612 spin_unlock_irq(phba->host->host_lock);
613 return (1);
614 }
615
616 mbout:
617 del_timer_sync(&phba->sli.mbox_tmo);
618 phba->work_hba_events &= ~WORKER_MBOX_TMO;
619
620 /*
621 * It is a fatal error if unknown mbox command completion.
622 */
623 if (lpfc_sli_chk_mbx_command(pmbox->mbxCommand) ==
624 MBX_SHUTDOWN) {
625
626 /* Unknow mailbox command compl */
627 lpfc_printf_log(phba,
628 KERN_ERR,
629 LOG_MBOX | LOG_SLI,
630 "%d:0323 Unknown Mailbox command %x Cmpl\n",
631 phba->brd_no,
632 pmbox->mbxCommand);
633 phba->hba_state = LPFC_HBA_ERROR;
634 phba->work_hs = HS_FFER3;
635 lpfc_handle_eratt(phba);
636 return (0);
637 }
638
639 phba->sli.mbox_active = NULL;
640 if (pmbox->mbxStatus) {
641 phba->sli.slistat.mbox_stat_err++;
642 if (pmbox->mbxStatus == MBXERR_NO_RESOURCES) {
643 /* Mbox cmd cmpl error - RETRYing */
644 lpfc_printf_log(phba,
645 KERN_INFO,
646 LOG_MBOX | LOG_SLI,
647 "%d:0305 Mbox cmd cmpl error - "
648 "RETRYing Data: x%x x%x x%x x%x\n",
649 phba->brd_no,
650 pmbox->mbxCommand,
651 pmbox->mbxStatus,
652 pmbox->un.varWords[0],
653 phba->hba_state);
654 pmbox->mbxStatus = 0;
655 pmbox->mbxOwner = OWN_HOST;
656 spin_lock_irq(phba->host->host_lock);
657 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
658 spin_unlock_irq(phba->host->host_lock);
659 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
660 if (rc == MBX_SUCCESS)
661 return (0);
662 }
663 }
664
665 /* Mailbox cmd <cmd> Cmpl <cmpl> */
666 lpfc_printf_log(phba,
667 KERN_INFO,
668 LOG_MBOX | LOG_SLI,
669 "%d:0307 Mailbox cmd x%x Cmpl x%p "
670 "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x\n",
671 phba->brd_no,
672 pmbox->mbxCommand,
673 pmb->mbox_cmpl,
674 *((uint32_t *) pmbox),
675 pmbox->un.varWords[0],
676 pmbox->un.varWords[1],
677 pmbox->un.varWords[2],
678 pmbox->un.varWords[3],
679 pmbox->un.varWords[4],
680 pmbox->un.varWords[5],
681 pmbox->un.varWords[6],
682 pmbox->un.varWords[7]);
683
684 if (pmb->mbox_cmpl) {
685 lpfc_sli_pcimem_bcopy(mbox, pmbox, MAILBOX_CMD_SIZE);
686 pmb->mbox_cmpl(phba,pmb);
687 }
688 }
689
690
691 do {
692 process_next = 0; /* by default don't loop */
693 spin_lock_irq(phba->host->host_lock);
694 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
695
696 /* Process next mailbox command if there is one */
697 if ((pmb = lpfc_mbox_get(phba))) {
698 spin_unlock_irq(phba->host->host_lock);
699 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
700 if (rc == MBX_NOT_FINISHED) {
701 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
702 pmb->mbox_cmpl(phba,pmb);
703 process_next = 1;
704 continue; /* loop back */
705 }
706 } else {
707 spin_unlock_irq(phba->host->host_lock);
708 /* Turn on IOCB processing */
709 for (i = 0; i < phba->sli.num_rings; i++) {
710 lpfc_sli_turn_on_ring(phba, i);
711 }
712
713 /* Free any lpfc_dmabuf's waiting for mbox cmd cmpls */
714 while (!list_empty(&phba->freebufList)) {
715 struct lpfc_dmabuf *mp;
716
717 mp = NULL;
718 list_remove_head((&phba->freebufList),
719 mp,
720 struct lpfc_dmabuf,
721 list);
722 if (mp) {
723 lpfc_mbuf_free(phba, mp->virt,
724 mp->phys);
725 kfree(mp);
726 }
727 }
728 }
729
730 } while (process_next);
731
732 return (0);
733 }
734 static int
735 lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
736 struct lpfc_iocbq *saveq)
737 {
738 IOCB_t * irsp;
739 WORD5 * w5p;
740 uint32_t Rctl, Type;
741 uint32_t match, i;
742
743 match = 0;
744 irsp = &(saveq->iocb);
745 if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX)
746 || (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX)) {
747 Rctl = FC_ELS_REQ;
748 Type = FC_ELS_DATA;
749 } else {
750 w5p =
751 (WORD5 *) & (saveq->iocb.un.
752 ulpWord[5]);
753 Rctl = w5p->hcsw.Rctl;
754 Type = w5p->hcsw.Type;
755
756 /* Firmware Workaround */
757 if ((Rctl == 0) && (pring->ringno == LPFC_ELS_RING) &&
758 (irsp->ulpCommand == CMD_RCV_SEQUENCE64_CX)) {
759 Rctl = FC_ELS_REQ;
760 Type = FC_ELS_DATA;
761 w5p->hcsw.Rctl = Rctl;
762 w5p->hcsw.Type = Type;
763 }
764 }
765 /* unSolicited Responses */
766 if (pring->prt[0].profile) {
767 (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring, saveq);
768 match = 1;
769 } else {
770 /* We must search, based on rctl / type
771 for the right routine */
772 for (i = 0; i < pring->num_mask;
773 i++) {
774 if ((pring->prt[i].rctl ==
775 Rctl)
776 && (pring->prt[i].
777 type == Type)) {
778 (pring->prt[i].lpfc_sli_rcv_unsol_event)
779 (phba, pring, saveq);
780 match = 1;
781 break;
782 }
783 }
784 }
785 if (match == 0) {
786 /* Unexpected Rctl / Type received */
787 /* Ring <ringno> handler: unexpected
788 Rctl <Rctl> Type <Type> received */
789 lpfc_printf_log(phba,
790 KERN_WARNING,
791 LOG_SLI,
792 "%d:0313 Ring %d handler: unexpected Rctl x%x "
793 "Type x%x received \n",
794 phba->brd_no,
795 pring->ringno,
796 Rctl,
797 Type);
798 }
799 return(1);
800 }
801
802 static struct lpfc_iocbq *
803 lpfc_sli_iocbq_lookup(struct lpfc_hba * phba,
804 struct lpfc_sli_ring * pring,
805 struct lpfc_iocbq * prspiocb)
806 {
807 struct lpfc_iocbq *cmd_iocb = NULL;
808 uint16_t iotag;
809
810 iotag = prspiocb->iocb.ulpIoTag;
811
812 if (iotag != 0 && iotag <= phba->sli.last_iotag) {
813 cmd_iocb = phba->sli.iocbq_lookup[iotag];
814 list_del(&cmd_iocb->list);
815 pring->txcmplq_cnt--;
816 return cmd_iocb;
817 }
818
819 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
820 "%d:0317 iotag x%x is out off "
821 "range: max iotag x%x wd0 x%x\n",
822 phba->brd_no, iotag,
823 phba->sli.last_iotag,
824 *(((uint32_t *) &prspiocb->iocb) + 7));
825 return NULL;
826 }
827
828 static int
829 lpfc_sli_process_sol_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
830 struct lpfc_iocbq *saveq)
831 {
832 struct lpfc_iocbq * cmdiocbp;
833 int rc = 1;
834 unsigned long iflag;
835
836 /* Based on the iotag field, get the cmd IOCB from the txcmplq */
837 spin_lock_irqsave(phba->host->host_lock, iflag);
838 cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring, saveq);
839 if (cmdiocbp) {
840 if (cmdiocbp->iocb_cmpl) {
841 /*
842 * Post all ELS completions to the worker thread.
843 * All other are passed to the completion callback.
844 */
845 if (pring->ringno == LPFC_ELS_RING) {
846 spin_unlock_irqrestore(phba->host->host_lock,
847 iflag);
848 (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
849 spin_lock_irqsave(phba->host->host_lock, iflag);
850 }
851 else {
852 spin_unlock_irqrestore(phba->host->host_lock,
853 iflag);
854 (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
855 spin_lock_irqsave(phba->host->host_lock, iflag);
856 }
857 } else
858 lpfc_sli_release_iocbq(phba, cmdiocbp);
859 } else {
860 /*
861 * Unknown initiating command based on the response iotag.
862 * This could be the case on the ELS ring because of
863 * lpfc_els_abort().
864 */
865 if (pring->ringno != LPFC_ELS_RING) {
866 /*
867 * Ring <ringno> handler: unexpected completion IoTag
868 * <IoTag>
869 */
870 lpfc_printf_log(phba,
871 KERN_WARNING,
872 LOG_SLI,
873 "%d:0322 Ring %d handler: unexpected "
874 "completion IoTag x%x Data: x%x x%x x%x x%x\n",
875 phba->brd_no,
876 pring->ringno,
877 saveq->iocb.ulpIoTag,
878 saveq->iocb.ulpStatus,
879 saveq->iocb.un.ulpWord[4],
880 saveq->iocb.ulpCommand,
881 saveq->iocb.ulpContext);
882 }
883 }
884
885 spin_unlock_irqrestore(phba->host->host_lock, iflag);
886 return rc;
887 }
888
889 static void lpfc_sli_rsp_pointers_error(struct lpfc_hba * phba,
890 struct lpfc_sli_ring * pring)
891 {
892 struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
893 /*
894 * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
895 * rsp ring <portRspMax>
896 */
897 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
898 "%d:0312 Ring %d handler: portRspPut %d "
899 "is bigger then rsp ring %d\n",
900 phba->brd_no, pring->ringno,
901 le32_to_cpu(pgp->rspPutInx),
902 pring->numRiocb);
903
904 phba->hba_state = LPFC_HBA_ERROR;
905
906 /*
907 * All error attention handlers are posted to
908 * worker thread
909 */
910 phba->work_ha |= HA_ERATT;
911 phba->work_hs = HS_FFER3;
912 if (phba->work_wait)
913 wake_up(phba->work_wait);
914
915 return;
916 }
917
918 void lpfc_sli_poll_fcp_ring(struct lpfc_hba * phba)
919 {
920 struct lpfc_sli * psli = &phba->sli;
921 struct lpfc_sli_ring * pring = &psli->ring[LPFC_FCP_RING];
922 IOCB_t *irsp = NULL;
923 IOCB_t *entry = NULL;
924 struct lpfc_iocbq *cmdiocbq = NULL;
925 struct lpfc_iocbq rspiocbq;
926 struct lpfc_pgp *pgp;
927 uint32_t status;
928 uint32_t portRspPut, portRspMax;
929 int type;
930 uint32_t rsp_cmpl = 0;
931 void __iomem *to_slim;
932 uint32_t ha_copy;
933
934 pring->stats.iocb_event++;
935
936 /* The driver assumes SLI-2 mode */
937 pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
938
939 /*
940 * The next available response entry should never exceed the maximum
941 * entries. If it does, treat it as an adapter hardware error.
942 */
943 portRspMax = pring->numRiocb;
944 portRspPut = le32_to_cpu(pgp->rspPutInx);
945 if (unlikely(portRspPut >= portRspMax)) {
946 lpfc_sli_rsp_pointers_error(phba, pring);
947 return;
948 }
949
950 rmb();
951 while (pring->rspidx != portRspPut) {
952
953 entry = IOCB_ENTRY(pring->rspringaddr, pring->rspidx);
954
955 if (++pring->rspidx >= portRspMax)
956 pring->rspidx = 0;
957
958 lpfc_sli_pcimem_bcopy((uint32_t *) entry,
959 (uint32_t *) &rspiocbq.iocb,
960 sizeof (IOCB_t));
961 irsp = &rspiocbq.iocb;
962 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
963 pring->stats.iocb_rsp++;
964 rsp_cmpl++;
965
966 if (unlikely(irsp->ulpStatus)) {
967 /* Rsp ring <ringno> error: IOCB */
968 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
969 "%d:0326 Rsp Ring %d error: IOCB Data: "
970 "x%x x%x x%x x%x x%x x%x x%x x%x\n",
971 phba->brd_no, pring->ringno,
972 irsp->un.ulpWord[0],
973 irsp->un.ulpWord[1],
974 irsp->un.ulpWord[2],
975 irsp->un.ulpWord[3],
976 irsp->un.ulpWord[4],
977 irsp->un.ulpWord[5],
978 *(((uint32_t *) irsp) + 6),
979 *(((uint32_t *) irsp) + 7));
980 }
981
982 switch (type) {
983 case LPFC_ABORT_IOCB:
984 case LPFC_SOL_IOCB:
985 /*
986 * Idle exchange closed via ABTS from port. No iocb
987 * resources need to be recovered.
988 */
989 if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
990 printk(KERN_INFO "%s: IOCB cmd 0x%x processed."
991 " Skipping completion\n", __FUNCTION__,
992 irsp->ulpCommand);
993 break;
994 }
995
996 cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
997 &rspiocbq);
998 if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
999 (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
1000 &rspiocbq);
1001 }
1002 break;
1003 default:
1004 if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1005 char adaptermsg[LPFC_MAX_ADPTMSG];
1006 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
1007 memcpy(&adaptermsg[0], (uint8_t *) irsp,
1008 MAX_MSG_DATA);
1009 dev_warn(&((phba->pcidev)->dev), "lpfc%d: %s",
1010 phba->brd_no, adaptermsg);
1011 } else {
1012 /* Unknown IOCB command */
1013 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1014 "%d:0321 Unknown IOCB command "
1015 "Data: x%x, x%x x%x x%x x%x\n",
1016 phba->brd_no, type,
1017 irsp->ulpCommand,
1018 irsp->ulpStatus,
1019 irsp->ulpIoTag,
1020 irsp->ulpContext);
1021 }
1022 break;
1023 }
1024
1025 /*
1026 * The response IOCB has been processed. Update the ring
1027 * pointer in SLIM. If the port response put pointer has not
1028 * been updated, sync the pgp->rspPutInx and fetch the new port
1029 * response put pointer.
1030 */
1031 to_slim = phba->MBslimaddr +
1032 (SLIMOFF + (pring->ringno * 2) + 1) * 4;
1033 writeb(pring->rspidx, to_slim);
1034
1035 if (pring->rspidx == portRspPut)
1036 portRspPut = le32_to_cpu(pgp->rspPutInx);
1037 }
1038
1039 ha_copy = readl(phba->HAregaddr);
1040 ha_copy >>= (LPFC_FCP_RING * 4);
1041
1042 if ((rsp_cmpl > 0) && (ha_copy & HA_R0RE_REQ)) {
1043 pring->stats.iocb_rsp_full++;
1044 status = ((CA_R0ATT | CA_R0RE_RSP) << (LPFC_FCP_RING * 4));
1045 writel(status, phba->CAregaddr);
1046 readl(phba->CAregaddr);
1047 }
1048 if ((ha_copy & HA_R0CE_RSP) &&
1049 (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1050 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1051 pring->stats.iocb_cmd_empty++;
1052
1053 /* Force update of the local copy of cmdGetInx */
1054 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1055 lpfc_sli_resume_iocb(phba, pring);
1056
1057 if ((pring->lpfc_sli_cmd_available))
1058 (pring->lpfc_sli_cmd_available) (phba, pring);
1059
1060 }
1061
1062 return;
1063 }
1064
1065 /*
1066 * This routine presumes LPFC_FCP_RING handling and doesn't bother
1067 * to check it explicitly.
1068 */
1069 static int
1070 lpfc_sli_handle_fast_ring_event(struct lpfc_hba * phba,
1071 struct lpfc_sli_ring * pring, uint32_t mask)
1072 {
1073 struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
1074 IOCB_t *irsp = NULL;
1075 IOCB_t *entry = NULL;
1076 struct lpfc_iocbq *cmdiocbq = NULL;
1077 struct lpfc_iocbq rspiocbq;
1078 uint32_t status;
1079 uint32_t portRspPut, portRspMax;
1080 int rc = 1;
1081 lpfc_iocb_type type;
1082 unsigned long iflag;
1083 uint32_t rsp_cmpl = 0;
1084 void __iomem *to_slim;
1085
1086 spin_lock_irqsave(phba->host->host_lock, iflag);
1087 pring->stats.iocb_event++;
1088
1089 /*
1090 * The next available response entry should never exceed the maximum
1091 * entries. If it does, treat it as an adapter hardware error.
1092 */
1093 portRspMax = pring->numRiocb;
1094 portRspPut = le32_to_cpu(pgp->rspPutInx);
1095 if (unlikely(portRspPut >= portRspMax)) {
1096 lpfc_sli_rsp_pointers_error(phba, pring);
1097 spin_unlock_irqrestore(phba->host->host_lock, iflag);
1098 return 1;
1099 }
1100
1101 rmb();
1102 while (pring->rspidx != portRspPut) {
1103 /*
1104 * Fetch an entry off the ring and copy it into a local data
1105 * structure. The copy involves a byte-swap since the
1106 * network byte order and pci byte orders are different.
1107 */
1108 entry = IOCB_ENTRY(pring->rspringaddr, pring->rspidx);
1109
1110 if (++pring->rspidx >= portRspMax)
1111 pring->rspidx = 0;
1112
1113 lpfc_sli_pcimem_bcopy((uint32_t *) entry,
1114 (uint32_t *) &rspiocbq.iocb,
1115 sizeof (IOCB_t));
1116 irsp = &rspiocbq.iocb;
1117
1118 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
1119 pring->stats.iocb_rsp++;
1120 rsp_cmpl++;
1121
1122 if (unlikely(irsp->ulpStatus)) {
1123 /* Rsp ring <ringno> error: IOCB */
1124 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
1125 "%d:0326 Rsp Ring %d error: IOCB Data: "
1126 "x%x x%x x%x x%x x%x x%x x%x x%x\n",
1127 phba->brd_no, pring->ringno,
1128 irsp->un.ulpWord[0], irsp->un.ulpWord[1],
1129 irsp->un.ulpWord[2], irsp->un.ulpWord[3],
1130 irsp->un.ulpWord[4], irsp->un.ulpWord[5],
1131 *(((uint32_t *) irsp) + 6),
1132 *(((uint32_t *) irsp) + 7));
1133 }
1134
1135 switch (type) {
1136 case LPFC_ABORT_IOCB:
1137 case LPFC_SOL_IOCB:
1138 /*
1139 * Idle exchange closed via ABTS from port. No iocb
1140 * resources need to be recovered.
1141 */
1142 if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
1143 printk(KERN_INFO "%s: IOCB cmd 0x%x processed. "
1144 "Skipping completion\n", __FUNCTION__,
1145 irsp->ulpCommand);
1146 break;
1147 }
1148
1149 cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
1150 &rspiocbq);
1151 if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
1152 spin_unlock_irqrestore(
1153 phba->host->host_lock, iflag);
1154 (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
1155 &rspiocbq);
1156 spin_lock_irqsave(phba->host->host_lock,
1157 iflag);
1158 }
1159 break;
1160 default:
1161 if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1162 char adaptermsg[LPFC_MAX_ADPTMSG];
1163 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
1164 memcpy(&adaptermsg[0], (uint8_t *) irsp,
1165 MAX_MSG_DATA);
1166 dev_warn(&((phba->pcidev)->dev), "lpfc%d: %s",
1167 phba->brd_no, adaptermsg);
1168 } else {
1169 /* Unknown IOCB command */
1170 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1171 "%d:0321 Unknown IOCB command "
1172 "Data: x%x, x%x x%x x%x x%x\n",
1173 phba->brd_no, type, irsp->ulpCommand,
1174 irsp->ulpStatus, irsp->ulpIoTag,
1175 irsp->ulpContext);
1176 }
1177 break;
1178 }
1179
1180 /*
1181 * The response IOCB has been processed. Update the ring
1182 * pointer in SLIM. If the port response put pointer has not
1183 * been updated, sync the pgp->rspPutInx and fetch the new port
1184 * response put pointer.
1185 */
1186 to_slim = phba->MBslimaddr +
1187 (SLIMOFF + (pring->ringno * 2) + 1) * 4;
1188 writel(pring->rspidx, to_slim);
1189
1190 if (pring->rspidx == portRspPut)
1191 portRspPut = le32_to_cpu(pgp->rspPutInx);
1192 }
1193
1194 if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) {
1195 pring->stats.iocb_rsp_full++;
1196 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1197 writel(status, phba->CAregaddr);
1198 readl(phba->CAregaddr);
1199 }
1200 if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1201 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1202 pring->stats.iocb_cmd_empty++;
1203
1204 /* Force update of the local copy of cmdGetInx */
1205 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1206 lpfc_sli_resume_iocb(phba, pring);
1207
1208 if ((pring->lpfc_sli_cmd_available))
1209 (pring->lpfc_sli_cmd_available) (phba, pring);
1210
1211 }
1212
1213 spin_unlock_irqrestore(phba->host->host_lock, iflag);
1214 return rc;
1215 }
1216
1217
1218 int
1219 lpfc_sli_handle_slow_ring_event(struct lpfc_hba * phba,
1220 struct lpfc_sli_ring * pring, uint32_t mask)
1221 {
1222 IOCB_t *entry;
1223 IOCB_t *irsp = NULL;
1224 struct lpfc_iocbq *rspiocbp = NULL;
1225 struct lpfc_iocbq *next_iocb;
1226 struct lpfc_iocbq *cmdiocbp;
1227 struct lpfc_iocbq *saveq;
1228 struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
1229 uint8_t iocb_cmd_type;
1230 lpfc_iocb_type type;
1231 uint32_t status, free_saveq;
1232 uint32_t portRspPut, portRspMax;
1233 int rc = 1;
1234 unsigned long iflag;
1235 void __iomem *to_slim;
1236
1237 spin_lock_irqsave(phba->host->host_lock, iflag);
1238 pring->stats.iocb_event++;
1239
1240 /*
1241 * The next available response entry should never exceed the maximum
1242 * entries. If it does, treat it as an adapter hardware error.
1243 */
1244 portRspMax = pring->numRiocb;
1245 portRspPut = le32_to_cpu(pgp->rspPutInx);
1246 if (portRspPut >= portRspMax) {
1247 /*
1248 * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
1249 * rsp ring <portRspMax>
1250 */
1251 lpfc_printf_log(phba,
1252 KERN_ERR,
1253 LOG_SLI,
1254 "%d:0312 Ring %d handler: portRspPut %d "
1255 "is bigger then rsp ring %d\n",
1256 phba->brd_no,
1257 pring->ringno, portRspPut, portRspMax);
1258
1259 phba->hba_state = LPFC_HBA_ERROR;
1260 spin_unlock_irqrestore(phba->host->host_lock, iflag);
1261
1262 phba->work_hs = HS_FFER3;
1263 lpfc_handle_eratt(phba);
1264
1265 return 1;
1266 }
1267
1268 rmb();
1269 while (pring->rspidx != portRspPut) {
1270 /*
1271 * Build a completion list and call the appropriate handler.
1272 * The process is to get the next available response iocb, get
1273 * a free iocb from the list, copy the response data into the
1274 * free iocb, insert to the continuation list, and update the
1275 * next response index to slim. This process makes response
1276 * iocb's in the ring available to DMA as fast as possible but
1277 * pays a penalty for a copy operation. Since the iocb is
1278 * only 32 bytes, this penalty is considered small relative to
1279 * the PCI reads for register values and a slim write. When
1280 * the ulpLe field is set, the entire Command has been
1281 * received.
1282 */
1283 entry = IOCB_ENTRY(pring->rspringaddr, pring->rspidx);
1284 rspiocbp = lpfc_sli_get_iocbq(phba);
1285 if (rspiocbp == NULL) {
1286 printk(KERN_ERR "%s: out of buffers! Failing "
1287 "completion.\n", __FUNCTION__);
1288 break;
1289 }
1290
1291 lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb, sizeof (IOCB_t));
1292 irsp = &rspiocbp->iocb;
1293
1294 if (++pring->rspidx >= portRspMax)
1295 pring->rspidx = 0;
1296
1297 to_slim = phba->MBslimaddr + (SLIMOFF + (pring->ringno * 2)
1298 + 1) * 4;
1299 writel(pring->rspidx, to_slim);
1300
1301 if (list_empty(&(pring->iocb_continueq))) {
1302 list_add(&rspiocbp->list, &(pring->iocb_continueq));
1303 } else {
1304 list_add_tail(&rspiocbp->list,
1305 &(pring->iocb_continueq));
1306 }
1307
1308 pring->iocb_continueq_cnt++;
1309 if (irsp->ulpLe) {
1310 /*
1311 * By default, the driver expects to free all resources
1312 * associated with this iocb completion.
1313 */
1314 free_saveq = 1;
1315 saveq = list_get_first(&pring->iocb_continueq,
1316 struct lpfc_iocbq, list);
1317 irsp = &(saveq->iocb);
1318 list_del_init(&pring->iocb_continueq);
1319 pring->iocb_continueq_cnt = 0;
1320
1321 pring->stats.iocb_rsp++;
1322
1323 if (irsp->ulpStatus) {
1324 /* Rsp ring <ringno> error: IOCB */
1325 lpfc_printf_log(phba,
1326 KERN_WARNING,
1327 LOG_SLI,
1328 "%d:0328 Rsp Ring %d error: IOCB Data: "
1329 "x%x x%x x%x x%x x%x x%x x%x x%x\n",
1330 phba->brd_no,
1331 pring->ringno,
1332 irsp->un.ulpWord[0],
1333 irsp->un.ulpWord[1],
1334 irsp->un.ulpWord[2],
1335 irsp->un.ulpWord[3],
1336 irsp->un.ulpWord[4],
1337 irsp->un.ulpWord[5],
1338 *(((uint32_t *) irsp) + 6),
1339 *(((uint32_t *) irsp) + 7));
1340 }
1341
1342 /*
1343 * Fetch the IOCB command type and call the correct
1344 * completion routine. Solicited and Unsolicited
1345 * IOCBs on the ELS ring get freed back to the
1346 * lpfc_iocb_list by the discovery kernel thread.
1347 */
1348 iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK;
1349 type = lpfc_sli_iocb_cmd_type(iocb_cmd_type);
1350 if (type == LPFC_SOL_IOCB) {
1351 spin_unlock_irqrestore(phba->host->host_lock,
1352 iflag);
1353 rc = lpfc_sli_process_sol_iocb(phba, pring,
1354 saveq);
1355 spin_lock_irqsave(phba->host->host_lock, iflag);
1356 } else if (type == LPFC_UNSOL_IOCB) {
1357 spin_unlock_irqrestore(phba->host->host_lock,
1358 iflag);
1359 rc = lpfc_sli_process_unsol_iocb(phba, pring,
1360 saveq);
1361 spin_lock_irqsave(phba->host->host_lock, iflag);
1362 } else if (type == LPFC_ABORT_IOCB) {
1363 if ((irsp->ulpCommand != CMD_XRI_ABORTED_CX) &&
1364 ((cmdiocbp =
1365 lpfc_sli_iocbq_lookup(phba, pring,
1366 saveq)))) {
1367 /* Call the specified completion
1368 routine */
1369 if (cmdiocbp->iocb_cmpl) {
1370 spin_unlock_irqrestore(
1371 phba->host->host_lock,
1372 iflag);
1373 (cmdiocbp->iocb_cmpl) (phba,
1374 cmdiocbp, saveq);
1375 spin_lock_irqsave(
1376 phba->host->host_lock,
1377 iflag);
1378 } else
1379 lpfc_sli_release_iocbq(phba,
1380 cmdiocbp);
1381 }
1382 } else if (type == LPFC_UNKNOWN_IOCB) {
1383 if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1384
1385 char adaptermsg[LPFC_MAX_ADPTMSG];
1386
1387 memset(adaptermsg, 0,
1388 LPFC_MAX_ADPTMSG);
1389 memcpy(&adaptermsg[0], (uint8_t *) irsp,
1390 MAX_MSG_DATA);
1391 dev_warn(&((phba->pcidev)->dev),
1392 "lpfc%d: %s",
1393 phba->brd_no, adaptermsg);
1394 } else {
1395 /* Unknown IOCB command */
1396 lpfc_printf_log(phba,
1397 KERN_ERR,
1398 LOG_SLI,
1399 "%d:0321 Unknown IOCB command "
1400 "Data: x%x x%x x%x x%x\n",
1401 phba->brd_no,
1402 irsp->ulpCommand,
1403 irsp->ulpStatus,
1404 irsp->ulpIoTag,
1405 irsp->ulpContext);
1406 }
1407 }
1408
1409 if (free_saveq) {
1410 if (!list_empty(&saveq->list)) {
1411 list_for_each_entry_safe(rspiocbp,
1412 next_iocb,
1413 &saveq->list,
1414 list) {
1415 lpfc_sli_release_iocbq(phba,
1416 rspiocbp);
1417 }
1418 }
1419
1420 lpfc_sli_release_iocbq(phba, saveq);
1421 }
1422 }
1423
1424 /*
1425 * If the port response put pointer has not been updated, sync
1426 * the pgp->rspPutInx in the MAILBOX_tand fetch the new port
1427 * response put pointer.
1428 */
1429 if (pring->rspidx == portRspPut) {
1430 portRspPut = le32_to_cpu(pgp->rspPutInx);
1431 }
1432 } /* while (pring->rspidx != portRspPut) */
1433
1434 if ((rspiocbp != 0) && (mask & HA_R0RE_REQ)) {
1435 /* At least one response entry has been freed */
1436 pring->stats.iocb_rsp_full++;
1437 /* SET RxRE_RSP in Chip Att register */
1438 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1439 writel(status, phba->CAregaddr);
1440 readl(phba->CAregaddr); /* flush */
1441 }
1442 if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1443 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1444 pring->stats.iocb_cmd_empty++;
1445
1446 /* Force update of the local copy of cmdGetInx */
1447 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1448 lpfc_sli_resume_iocb(phba, pring);
1449
1450 if ((pring->lpfc_sli_cmd_available))
1451 (pring->lpfc_sli_cmd_available) (phba, pring);
1452
1453 }
1454
1455 spin_unlock_irqrestore(phba->host->host_lock, iflag);
1456 return rc;
1457 }
1458
1459 int
1460 lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1461 {
1462 struct lpfc_iocbq *iocb, *next_iocb;
1463 IOCB_t *icmd = NULL, *cmd = NULL;
1464 int errcnt;
1465
1466 errcnt = 0;
1467
1468 /* Error everything on txq and txcmplq
1469 * First do the txq.
1470 */
1471 spin_lock_irq(phba->host->host_lock);
1472 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
1473 list_del_init(&iocb->list);
1474 if (iocb->iocb_cmpl) {
1475 icmd = &iocb->iocb;
1476 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1477 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1478 spin_unlock_irq(phba->host->host_lock);
1479 (iocb->iocb_cmpl) (phba, iocb, iocb);
1480 spin_lock_irq(phba->host->host_lock);
1481 } else
1482 lpfc_sli_release_iocbq(phba, iocb);
1483 }
1484 pring->txq_cnt = 0;
1485 INIT_LIST_HEAD(&(pring->txq));
1486
1487 /* Next issue ABTS for everything on the txcmplq */
1488 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
1489 cmd = &iocb->iocb;
1490
1491 /*
1492 * Imediate abort of IOCB, deque and call compl
1493 */
1494
1495 list_del_init(&iocb->list);
1496 pring->txcmplq_cnt--;
1497
1498 if (iocb->iocb_cmpl) {
1499 cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1500 cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1501 spin_unlock_irq(phba->host->host_lock);
1502 (iocb->iocb_cmpl) (phba, iocb, iocb);
1503 spin_lock_irq(phba->host->host_lock);
1504 } else
1505 lpfc_sli_release_iocbq(phba, iocb);
1506 }
1507
1508 INIT_LIST_HEAD(&pring->txcmplq);
1509 pring->txcmplq_cnt = 0;
1510 spin_unlock_irq(phba->host->host_lock);
1511
1512 return errcnt;
1513 }
1514
1515 /******************************************************************************
1516 * lpfc_sli_send_reset
1517 *
1518 * Note: After returning from this function, the HBA cannot be accessed for
1519 * 1 ms. Since we do not wish to delay in interrupt context, it is the
1520 * responsibility of the caller to perform the mdelay(1) and flush via readl().
1521 ******************************************************************************/
1522 static int
1523 lpfc_sli_send_reset(struct lpfc_hba * phba, uint16_t skip_post)
1524 {
1525 MAILBOX_t *swpmb;
1526 volatile uint32_t word0;
1527 void __iomem *to_slim;
1528 unsigned long flags = 0;
1529
1530 spin_lock_irqsave(phba->host->host_lock, flags);
1531
1532 /* A board reset must use REAL SLIM. */
1533 phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE;
1534
1535 word0 = 0;
1536 swpmb = (MAILBOX_t *) & word0;
1537 swpmb->mbxCommand = MBX_RESTART;
1538 swpmb->mbxHc = 1;
1539
1540 to_slim = phba->MBslimaddr;
1541 writel(*(uint32_t *) swpmb, to_slim);
1542 readl(to_slim); /* flush */
1543
1544 /* Only skip post after fc_ffinit is completed */
1545 if (skip_post) {
1546 word0 = 1; /* This is really setting up word1 */
1547 } else {
1548 word0 = 0; /* This is really setting up word1 */
1549 }
1550 to_slim = phba->MBslimaddr + sizeof (uint32_t);
1551 writel(*(uint32_t *) swpmb, to_slim);
1552 readl(to_slim); /* flush */
1553
1554 /* Turn off parity checking and serr during the physical reset */
1555 pci_read_config_word(phba->pcidev, PCI_COMMAND, &phba->pci_cfg_value);
1556 pci_write_config_word(phba->pcidev, PCI_COMMAND,
1557 (phba->pci_cfg_value &
1558 ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
1559
1560 writel(HC_INITFF, phba->HCregaddr);
1561
1562 phba->hba_state = LPFC_INIT_START;
1563 spin_unlock_irqrestore(phba->host->host_lock, flags);
1564
1565 return 0;
1566 }
1567
1568 static int
1569 lpfc_sli_brdreset(struct lpfc_hba * phba, uint16_t skip_post)
1570 {
1571 struct lpfc_sli_ring *pring;
1572 int i;
1573 struct lpfc_dmabuf *mp, *next_mp;
1574 unsigned long flags = 0;
1575
1576 lpfc_sli_send_reset(phba, skip_post);
1577 mdelay(1);
1578
1579 spin_lock_irqsave(phba->host->host_lock, flags);
1580 /* Risk the write on flush case ie no delay after the readl */
1581 readl(phba->HCregaddr); /* flush */
1582 /* Now toggle INITFF bit set by lpfc_sli_send_reset */
1583 writel(0, phba->HCregaddr);
1584 readl(phba->HCregaddr); /* flush */
1585
1586 /* Restore PCI cmd register */
1587 pci_write_config_word(phba->pcidev, PCI_COMMAND, phba->pci_cfg_value);
1588
1589 /* perform board reset */
1590 phba->fc_eventTag = 0;
1591 phba->fc_myDID = 0;
1592 phba->fc_prevDID = Mask_DID;
1593
1594 /* Reset HBA */
1595 lpfc_printf_log(phba,
1596 KERN_INFO,
1597 LOG_SLI,
1598 "%d:0325 Reset HBA Data: x%x x%x x%x\n",
1599 phba->brd_no,
1600 phba->hba_state,
1601 phba->sli.sli_flag,
1602 skip_post);
1603
1604 /* Initialize relevant SLI info */
1605 for (i = 0; i < phba->sli.num_rings; i++) {
1606 pring = &phba->sli.ring[i];
1607 pring->flag = 0;
1608 pring->rspidx = 0;
1609 pring->next_cmdidx = 0;
1610 pring->local_getidx = 0;
1611 pring->cmdidx = 0;
1612 pring->missbufcnt = 0;
1613 }
1614 spin_unlock_irqrestore(phba->host->host_lock, flags);
1615
1616 if (skip_post) {
1617 mdelay(100);
1618 } else {
1619 mdelay(2000);
1620 }
1621
1622 spin_lock_irqsave(phba->host->host_lock, flags);
1623 /* Cleanup preposted buffers on the ELS ring */
1624 pring = &phba->sli.ring[LPFC_ELS_RING];
1625 list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
1626 list_del(&mp->list);
1627 pring->postbufq_cnt--;
1628 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1629 kfree(mp);
1630 }
1631 spin_unlock_irqrestore(phba->host->host_lock, flags);
1632
1633 for (i = 0; i < phba->sli.num_rings; i++)
1634 lpfc_sli_abort_iocb_ring(phba, &phba->sli.ring[i]);
1635
1636 return 0;
1637 }
1638
1639 static int
1640 lpfc_sli_chipset_init(struct lpfc_hba *phba)
1641 {
1642 uint32_t status, i = 0;
1643
1644 /* Read the HBA Host Status Register */
1645 status = readl(phba->HSregaddr);
1646
1647 /* Check status register to see what current state is */
1648 i = 0;
1649 while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) {
1650
1651 /* Check every 100ms for 5 retries, then every 500ms for 5, then
1652 * every 2.5 sec for 5, then reset board and every 2.5 sec for
1653 * 4.
1654 */
1655 if (i++ >= 20) {
1656 /* Adapter failed to init, timeout, status reg
1657 <status> */
1658 lpfc_printf_log(phba,
1659 KERN_ERR,
1660 LOG_INIT,
1661 "%d:0436 Adapter failed to init, "
1662 "timeout, status reg x%x\n",
1663 phba->brd_no,
1664 status);
1665 phba->hba_state = LPFC_HBA_ERROR;
1666 return -ETIMEDOUT;
1667 }
1668
1669 /* Check to see if any errors occurred during init */
1670 if (status & HS_FFERM) {
1671 /* ERROR: During chipset initialization */
1672 /* Adapter failed to init, chipset, status reg
1673 <status> */
1674 lpfc_printf_log(phba,
1675 KERN_ERR,
1676 LOG_INIT,
1677 "%d:0437 Adapter failed to init, "
1678 "chipset, status reg x%x\n",
1679 phba->brd_no,
1680 status);
1681 phba->hba_state = LPFC_HBA_ERROR;
1682 return -EIO;
1683 }
1684
1685 if (i <= 5) {
1686 msleep(10);
1687 } else if (i <= 10) {
1688 msleep(500);
1689 } else {
1690 msleep(2500);
1691 }
1692
1693 if (i == 15) {
1694 lpfc_sli_brdreset(phba, 0);
1695 }
1696 /* Read the HBA Host Status Register */
1697 status = readl(phba->HSregaddr);
1698 }
1699
1700 /* Check to see if any errors occurred during init */
1701 if (status & HS_FFERM) {
1702 /* ERROR: During chipset initialization */
1703 /* Adapter failed to init, chipset, status reg <status> */
1704 lpfc_printf_log(phba,
1705 KERN_ERR,
1706 LOG_INIT,
1707 "%d:0438 Adapter failed to init, chipset, "
1708 "status reg x%x\n",
1709 phba->brd_no,
1710 status);
1711 phba->hba_state = LPFC_HBA_ERROR;
1712 return -EIO;
1713 }
1714
1715 /* Clear all interrupt enable conditions */
1716 writel(0, phba->HCregaddr);
1717 readl(phba->HCregaddr); /* flush */
1718
1719 /* setup host attn register */
1720 writel(0xffffffff, phba->HAregaddr);
1721 readl(phba->HAregaddr); /* flush */
1722 return 0;
1723 }
1724
1725 int
1726 lpfc_sli_hba_setup(struct lpfc_hba * phba)
1727 {
1728 LPFC_MBOXQ_t *pmb;
1729 uint32_t resetcount = 0, rc = 0, done = 0;
1730
1731 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1732 if (!pmb) {
1733 phba->hba_state = LPFC_HBA_ERROR;
1734 return -ENOMEM;
1735 }
1736
1737 while (resetcount < 2 && !done) {
1738 phba->hba_state = 0;
1739 lpfc_sli_brdreset(phba, 0);
1740 msleep(2500);
1741 rc = lpfc_sli_chipset_init(phba);
1742 if (rc)
1743 break;
1744
1745 resetcount++;
1746
1747 /* Call pre CONFIG_PORT mailbox command initialization. A value of 0
1748 * means the call was successful. Any other nonzero value is a failure,
1749 * but if ERESTART is returned, the driver may reset the HBA and try
1750 * again.
1751 */
1752 rc = lpfc_config_port_prep(phba);
1753 if (rc == -ERESTART) {
1754 phba->hba_state = 0;
1755 continue;
1756 } else if (rc) {
1757 break;
1758 }
1759
1760 phba->hba_state = LPFC_INIT_MBX_CMDS;
1761 lpfc_config_port(phba, pmb);
1762 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
1763 if (rc == MBX_SUCCESS)
1764 done = 1;
1765 else {
1766 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1767 "%d:0442 Adapter failed to init, mbxCmd x%x "
1768 "CONFIG_PORT, mbxStatus x%x Data: x%x\n",
1769 phba->brd_no, pmb->mb.mbxCommand,
1770 pmb->mb.mbxStatus, 0);
1771 phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE;
1772 }
1773 }
1774 if (!done)
1775 goto lpfc_sli_hba_setup_error;
1776
1777 rc = lpfc_sli_ring_map(phba, pmb);
1778
1779 if (rc)
1780 goto lpfc_sli_hba_setup_error;
1781
1782 phba->sli.sli_flag |= LPFC_PROCESS_LA;
1783
1784 rc = lpfc_config_port_post(phba);
1785 if (rc)
1786 goto lpfc_sli_hba_setup_error;
1787
1788 goto lpfc_sli_hba_setup_exit;
1789 lpfc_sli_hba_setup_error:
1790 phba->hba_state = LPFC_HBA_ERROR;
1791 lpfc_sli_hba_setup_exit:
1792 mempool_free(pmb, phba->mbox_mem_pool);
1793 return rc;
1794 }
1795
1796 static void
1797 lpfc_mbox_abort(struct lpfc_hba * phba)
1798 {
1799 LPFC_MBOXQ_t *pmbox;
1800 MAILBOX_t *mb;
1801
1802 if (phba->sli.mbox_active) {
1803 del_timer_sync(&phba->sli.mbox_tmo);
1804 phba->work_hba_events &= ~WORKER_MBOX_TMO;
1805 pmbox = phba->sli.mbox_active;
1806 mb = &pmbox->mb;
1807 phba->sli.mbox_active = NULL;
1808 if (pmbox->mbox_cmpl) {
1809 mb->mbxStatus = MBX_NOT_FINISHED;
1810 (pmbox->mbox_cmpl) (phba, pmbox);
1811 }
1812 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1813 }
1814
1815 /* Abort all the non active mailbox commands. */
1816 spin_lock_irq(phba->host->host_lock);
1817 pmbox = lpfc_mbox_get(phba);
1818 while (pmbox) {
1819 mb = &pmbox->mb;
1820 if (pmbox->mbox_cmpl) {
1821 mb->mbxStatus = MBX_NOT_FINISHED;
1822 spin_unlock_irq(phba->host->host_lock);
1823 (pmbox->mbox_cmpl) (phba, pmbox);
1824 spin_lock_irq(phba->host->host_lock);
1825 }
1826 pmbox = lpfc_mbox_get(phba);
1827 }
1828 spin_unlock_irq(phba->host->host_lock);
1829 return;
1830 }
1831
1832 /*! lpfc_mbox_timeout
1833 *
1834 * \pre
1835 * \post
1836 * \param hba Pointer to per struct lpfc_hba structure
1837 * \param l1 Pointer to the driver's mailbox queue.
1838 * \return
1839 * void
1840 *
1841 * \b Description:
1842 *
1843 * This routine handles mailbox timeout events at timer interrupt context.
1844 */
1845 void
1846 lpfc_mbox_timeout(unsigned long ptr)
1847 {
1848 struct lpfc_hba *phba;
1849 unsigned long iflag;
1850
1851 phba = (struct lpfc_hba *)ptr;
1852 spin_lock_irqsave(phba->host->host_lock, iflag);
1853 if (!(phba->work_hba_events & WORKER_MBOX_TMO)) {
1854 phba->work_hba_events |= WORKER_MBOX_TMO;
1855 if (phba->work_wait)
1856 wake_up(phba->work_wait);
1857 }
1858 spin_unlock_irqrestore(phba->host->host_lock, iflag);
1859 }
1860
1861 void
1862 lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
1863 {
1864 LPFC_MBOXQ_t *pmbox;
1865 MAILBOX_t *mb;
1866
1867 spin_lock_irq(phba->host->host_lock);
1868 if (!(phba->work_hba_events & WORKER_MBOX_TMO)) {
1869 spin_unlock_irq(phba->host->host_lock);
1870 return;
1871 }
1872
1873 phba->work_hba_events &= ~WORKER_MBOX_TMO;
1874
1875 pmbox = phba->sli.mbox_active;
1876 mb = &pmbox->mb;
1877
1878 /* Mbox cmd <mbxCommand> timeout */
1879 lpfc_printf_log(phba,
1880 KERN_ERR,
1881 LOG_MBOX | LOG_SLI,
1882 "%d:0310 Mailbox command x%x timeout Data: x%x x%x x%p\n",
1883 phba->brd_no,
1884 mb->mbxCommand,
1885 phba->hba_state,
1886 phba->sli.sli_flag,
1887 phba->sli.mbox_active);
1888
1889 phba->sli.mbox_active = NULL;
1890 if (pmbox->mbox_cmpl) {
1891 mb->mbxStatus = MBX_NOT_FINISHED;
1892 spin_unlock_irq(phba->host->host_lock);
1893 (pmbox->mbox_cmpl) (phba, pmbox);
1894 spin_lock_irq(phba->host->host_lock);
1895 }
1896 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1897
1898 spin_unlock_irq(phba->host->host_lock);
1899 lpfc_mbox_abort(phba);
1900 return;
1901 }
1902
1903 int
1904 lpfc_sli_issue_mbox(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmbox, uint32_t flag)
1905 {
1906 MAILBOX_t *mb;
1907 struct lpfc_sli *psli;
1908 uint32_t status, evtctr;
1909 uint32_t ha_copy;
1910 int i;
1911 unsigned long drvr_flag = 0;
1912 volatile uint32_t word0, ldata;
1913 void __iomem *to_slim;
1914
1915 psli = &phba->sli;
1916
1917 spin_lock_irqsave(phba->host->host_lock, drvr_flag);
1918
1919
1920 mb = &pmbox->mb;
1921 status = MBX_SUCCESS;
1922
1923 if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
1924 /* Polling for a mbox command when another one is already active
1925 * is not allowed in SLI. Also, the driver must have established
1926 * SLI2 mode to queue and process multiple mbox commands.
1927 */
1928
1929 if (flag & MBX_POLL) {
1930 spin_unlock_irqrestore(phba->host->host_lock,
1931 drvr_flag);
1932
1933 /* Mbox command <mbxCommand> cannot issue */
1934 LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
1935 return (MBX_NOT_FINISHED);
1936 }
1937
1938 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) {
1939 spin_unlock_irqrestore(phba->host->host_lock,
1940 drvr_flag);
1941 /* Mbox command <mbxCommand> cannot issue */
1942 LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
1943 return (MBX_NOT_FINISHED);
1944 }
1945
1946 /* Handle STOP IOCB processing flag. This is only meaningful
1947 * if we are not polling for mbox completion.
1948 */
1949 if (flag & MBX_STOP_IOCB) {
1950 flag &= ~MBX_STOP_IOCB;
1951 /* Now flag each ring */
1952 for (i = 0; i < psli->num_rings; i++) {
1953 /* If the ring is active, flag it */
1954 if (psli->ring[i].cmdringaddr) {
1955 psli->ring[i].flag |=
1956 LPFC_STOP_IOCB_MBX;
1957 }
1958 }
1959 }
1960
1961 /* Another mailbox command is still being processed, queue this
1962 * command to be processed later.
1963 */
1964 lpfc_mbox_put(phba, pmbox);
1965
1966 /* Mbox cmd issue - BUSY */
1967 lpfc_printf_log(phba,
1968 KERN_INFO,
1969 LOG_MBOX | LOG_SLI,
1970 "%d:0308 Mbox cmd issue - BUSY Data: x%x x%x x%x x%x\n",
1971 phba->brd_no,
1972 mb->mbxCommand,
1973 phba->hba_state,
1974 psli->sli_flag,
1975 flag);
1976
1977 psli->slistat.mbox_busy++;
1978 spin_unlock_irqrestore(phba->host->host_lock,
1979 drvr_flag);
1980
1981 return (MBX_BUSY);
1982 }
1983
1984 /* Handle STOP IOCB processing flag. This is only meaningful
1985 * if we are not polling for mbox completion.
1986 */
1987 if (flag & MBX_STOP_IOCB) {
1988 flag &= ~MBX_STOP_IOCB;
1989 if (flag == MBX_NOWAIT) {
1990 /* Now flag each ring */
1991 for (i = 0; i < psli->num_rings; i++) {
1992 /* If the ring is active, flag it */
1993 if (psli->ring[i].cmdringaddr) {
1994 psli->ring[i].flag |=
1995 LPFC_STOP_IOCB_MBX;
1996 }
1997 }
1998 }
1999 }
2000
2001 psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
2002
2003 /* If we are not polling, we MUST be in SLI2 mode */
2004 if (flag != MBX_POLL) {
2005 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) {
2006 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2007 spin_unlock_irqrestore(phba->host->host_lock,
2008 drvr_flag);
2009 /* Mbox command <mbxCommand> cannot issue */
2010 LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag);
2011 return (MBX_NOT_FINISHED);
2012 }
2013 /* timeout active mbox command */
2014 mod_timer(&psli->mbox_tmo, jiffies + HZ * LPFC_MBOX_TMO);
2015 }
2016
2017 /* Mailbox cmd <cmd> issue */
2018 lpfc_printf_log(phba,
2019 KERN_INFO,
2020 LOG_MBOX | LOG_SLI,
2021 "%d:0309 Mailbox cmd x%x issue Data: x%x x%x x%x\n",
2022 phba->brd_no,
2023 mb->mbxCommand,
2024 phba->hba_state,
2025 psli->sli_flag,
2026 flag);
2027
2028 psli->slistat.mbox_cmd++;
2029 evtctr = psli->slistat.mbox_event;
2030
2031 /* next set own bit for the adapter and copy over command word */
2032 mb->mbxOwner = OWN_CHIP;
2033
2034 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2035 /* First copy command data to host SLIM area */
2036 lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx, MAILBOX_CMD_SIZE);
2037 } else {
2038 if (mb->mbxCommand == MBX_CONFIG_PORT) {
2039 /* copy command data into host mbox for cmpl */
2040 lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx,
2041 MAILBOX_CMD_SIZE);
2042 }
2043
2044 /* First copy mbox command data to HBA SLIM, skip past first
2045 word */
2046 to_slim = phba->MBslimaddr + sizeof (uint32_t);
2047 lpfc_memcpy_to_slim(to_slim, &mb->un.varWords[0],
2048 MAILBOX_CMD_SIZE - sizeof (uint32_t));
2049
2050 /* Next copy over first word, with mbxOwner set */
2051 ldata = *((volatile uint32_t *)mb);
2052 to_slim = phba->MBslimaddr;
2053 writel(ldata, to_slim);
2054 readl(to_slim); /* flush */
2055
2056 if (mb->mbxCommand == MBX_CONFIG_PORT) {
2057 /* switch over to host mailbox */
2058 psli->sli_flag |= LPFC_SLI2_ACTIVE;
2059 }
2060 }
2061
2062 wmb();
2063 /* interrupt board to doit right away */
2064 writel(CA_MBATT, phba->CAregaddr);
2065 readl(phba->CAregaddr); /* flush */
2066
2067 switch (flag) {
2068 case MBX_NOWAIT:
2069 /* Don't wait for it to finish, just return */
2070 psli->mbox_active = pmbox;
2071 break;
2072
2073 case MBX_POLL:
2074 i = 0;
2075 psli->mbox_active = NULL;
2076 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2077 /* First read mbox status word */
2078 word0 = *((volatile uint32_t *)&phba->slim2p->mbx);
2079 word0 = le32_to_cpu(word0);
2080 } else {
2081 /* First read mbox status word */
2082 word0 = readl(phba->MBslimaddr);
2083 }
2084
2085 /* Read the HBA Host Attention Register */
2086 ha_copy = readl(phba->HAregaddr);
2087
2088 /* Wait for command to complete */
2089 while (((word0 & OWN_CHIP) == OWN_CHIP)
2090 || !(ha_copy & HA_MBATT)) {
2091 if (i++ >= 100) {
2092 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2093 spin_unlock_irqrestore(phba->host->host_lock,
2094 drvr_flag);
2095 return (MBX_NOT_FINISHED);
2096 }
2097
2098 /* Check if we took a mbox interrupt while we were
2099 polling */
2100 if (((word0 & OWN_CHIP) != OWN_CHIP)
2101 && (evtctr != psli->slistat.mbox_event))
2102 break;
2103
2104 spin_unlock_irqrestore(phba->host->host_lock,
2105 drvr_flag);
2106
2107 /* Can be in interrupt context, do not sleep */
2108 /* (or might be called with interrupts disabled) */
2109 mdelay(i);
2110
2111 spin_lock_irqsave(phba->host->host_lock, drvr_flag);
2112
2113 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2114 /* First copy command data */
2115 word0 = *((volatile uint32_t *)
2116 &phba->slim2p->mbx);
2117 word0 = le32_to_cpu(word0);
2118 if (mb->mbxCommand == MBX_CONFIG_PORT) {
2119 MAILBOX_t *slimmb;
2120 volatile uint32_t slimword0;
2121 /* Check real SLIM for any errors */
2122 slimword0 = readl(phba->MBslimaddr);
2123 slimmb = (MAILBOX_t *) & slimword0;
2124 if (((slimword0 & OWN_CHIP) != OWN_CHIP)
2125 && slimmb->mbxStatus) {
2126 psli->sli_flag &=
2127 ~LPFC_SLI2_ACTIVE;
2128 word0 = slimword0;
2129 }
2130 }
2131 } else {
2132 /* First copy command data */
2133 word0 = readl(phba->MBslimaddr);
2134 }
2135 /* Read the HBA Host Attention Register */
2136 ha_copy = readl(phba->HAregaddr);
2137 }
2138
2139 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2140 /* copy results back to user */
2141 lpfc_sli_pcimem_bcopy(&phba->slim2p->mbx, mb,
2142 MAILBOX_CMD_SIZE);
2143 } else {
2144 /* First copy command data */
2145 lpfc_memcpy_from_slim(mb, phba->MBslimaddr,
2146 MAILBOX_CMD_SIZE);
2147 if ((mb->mbxCommand == MBX_DUMP_MEMORY) &&
2148 pmbox->context2) {
2149 lpfc_memcpy_from_slim((void *)pmbox->context2,
2150 phba->MBslimaddr + DMP_RSP_OFFSET,
2151 mb->un.varDmp.word_cnt);
2152 }
2153 }
2154
2155 writel(HA_MBATT, phba->HAregaddr);
2156 readl(phba->HAregaddr); /* flush */
2157
2158 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2159 status = mb->mbxStatus;
2160 }
2161
2162 spin_unlock_irqrestore(phba->host->host_lock, drvr_flag);
2163 return (status);
2164 }
2165
2166 static int
2167 lpfc_sli_ringtx_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
2168 struct lpfc_iocbq * piocb)
2169 {
2170 /* Insert the caller's iocb in the txq tail for later processing. */
2171 list_add_tail(&piocb->list, &pring->txq);
2172 pring->txq_cnt++;
2173 return (0);
2174 }
2175
2176 static struct lpfc_iocbq *
2177 lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2178 struct lpfc_iocbq ** piocb)
2179 {
2180 struct lpfc_iocbq * nextiocb;
2181
2182 nextiocb = lpfc_sli_ringtx_get(phba, pring);
2183 if (!nextiocb) {
2184 nextiocb = *piocb;
2185 *piocb = NULL;
2186 }
2187
2188 return nextiocb;
2189 }
2190
2191 int
2192 lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2193 struct lpfc_iocbq *piocb, uint32_t flag)
2194 {
2195 struct lpfc_iocbq *nextiocb;
2196 IOCB_t *iocb;
2197
2198 /*
2199 * We should never get an IOCB if we are in a < LINK_DOWN state
2200 */
2201 if (unlikely(phba->hba_state < LPFC_LINK_DOWN))
2202 return IOCB_ERROR;
2203
2204 /*
2205 * Check to see if we are blocking IOCB processing because of a
2206 * outstanding mbox command.
2207 */
2208 if (unlikely(pring->flag & LPFC_STOP_IOCB_MBX))
2209 goto iocb_busy;
2210
2211 if (unlikely(phba->hba_state == LPFC_LINK_DOWN)) {
2212 /*
2213 * Only CREATE_XRI, CLOSE_XRI, ABORT_XRI, and QUE_RING_BUF
2214 * can be issued if the link is not up.
2215 */
2216 switch (piocb->iocb.ulpCommand) {
2217 case CMD_QUE_RING_BUF_CN:
2218 case CMD_QUE_RING_BUF64_CN:
2219 /*
2220 * For IOCBs, like QUE_RING_BUF, that have no rsp ring
2221 * completion, iocb_cmpl MUST be 0.
2222 */
2223 if (piocb->iocb_cmpl)
2224 piocb->iocb_cmpl = NULL;
2225 /*FALLTHROUGH*/
2226 case CMD_CREATE_XRI_CR:
2227 break;
2228 default:
2229 goto iocb_busy;
2230 }
2231
2232 /*
2233 * For FCP commands, we must be in a state where we can process link
2234 * attention events.
2235 */
2236 } else if (unlikely(pring->ringno == phba->sli.fcp_ring &&
2237 !(phba->sli.sli_flag & LPFC_PROCESS_LA)))
2238 goto iocb_busy;
2239
2240 /*
2241 * Check to see if this is a high priority command.
2242 * If so bypass tx queue processing.
2243 */
2244 if (unlikely((flag & SLI_IOCB_HIGH_PRIORITY) &&
2245 (iocb = lpfc_sli_next_iocb_slot(phba, pring)))) {
2246 lpfc_sli_submit_iocb(phba, pring, iocb, piocb);
2247 piocb = NULL;
2248 }
2249
2250 while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
2251 (nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb)))
2252 lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
2253
2254 if (iocb)
2255 lpfc_sli_update_ring(phba, pring);
2256 else
2257 lpfc_sli_update_full_ring(phba, pring);
2258
2259 if (!piocb)
2260 return IOCB_SUCCESS;
2261
2262 goto out_busy;
2263
2264 iocb_busy:
2265 pring->stats.iocb_cmd_delay++;
2266
2267 out_busy:
2268
2269 if (!(flag & SLI_IOCB_RET_IOCB)) {
2270 lpfc_sli_ringtx_put(phba, pring, piocb);
2271 return IOCB_SUCCESS;
2272 }
2273
2274 return IOCB_BUSY;
2275 }
2276
2277 int
2278 lpfc_sli_setup(struct lpfc_hba *phba)
2279 {
2280 int i, totiocb = 0;
2281 struct lpfc_sli *psli = &phba->sli;
2282 struct lpfc_sli_ring *pring;
2283
2284 psli->num_rings = MAX_CONFIGURED_RINGS;
2285 psli->sli_flag = 0;
2286 psli->fcp_ring = LPFC_FCP_RING;
2287 psli->next_ring = LPFC_FCP_NEXT_RING;
2288 psli->ip_ring = LPFC_IP_RING;
2289
2290 psli->iocbq_lookup = NULL;
2291 psli->iocbq_lookup_len = 0;
2292 psli->last_iotag = 0;
2293
2294 for (i = 0; i < psli->num_rings; i++) {
2295 pring = &psli->ring[i];
2296 switch (i) {
2297 case LPFC_FCP_RING: /* ring 0 - FCP */
2298 /* numCiocb and numRiocb are used in config_port */
2299 pring->numCiocb = SLI2_IOCB_CMD_R0_ENTRIES;
2300 pring->numRiocb = SLI2_IOCB_RSP_R0_ENTRIES;
2301 pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
2302 pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
2303 pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
2304 pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
2305 pring->iotag_ctr = 0;
2306 pring->iotag_max =
2307 (phba->cfg_hba_queue_depth * 2);
2308 pring->fast_iotag = pring->iotag_max;
2309 pring->num_mask = 0;
2310 break;
2311 case LPFC_IP_RING: /* ring 1 - IP */
2312 /* numCiocb and numRiocb are used in config_port */
2313 pring->numCiocb = SLI2_IOCB_CMD_R1_ENTRIES;
2314 pring->numRiocb = SLI2_IOCB_RSP_R1_ENTRIES;
2315 pring->num_mask = 0;
2316 break;
2317 case LPFC_ELS_RING: /* ring 2 - ELS / CT */
2318 /* numCiocb and numRiocb are used in config_port */
2319 pring->numCiocb = SLI2_IOCB_CMD_R2_ENTRIES;
2320 pring->numRiocb = SLI2_IOCB_RSP_R2_ENTRIES;
2321 pring->fast_iotag = 0;
2322 pring->iotag_ctr = 0;
2323 pring->iotag_max = 4096;
2324 pring->num_mask = 4;
2325 pring->prt[0].profile = 0; /* Mask 0 */
2326 pring->prt[0].rctl = FC_ELS_REQ;
2327 pring->prt[0].type = FC_ELS_DATA;
2328 pring->prt[0].lpfc_sli_rcv_unsol_event =
2329 lpfc_els_unsol_event;
2330 pring->prt[1].profile = 0; /* Mask 1 */
2331 pring->prt[1].rctl = FC_ELS_RSP;
2332 pring->prt[1].type = FC_ELS_DATA;
2333 pring->prt[1].lpfc_sli_rcv_unsol_event =
2334 lpfc_els_unsol_event;
2335 pring->prt[2].profile = 0; /* Mask 2 */
2336 /* NameServer Inquiry */
2337 pring->prt[2].rctl = FC_UNSOL_CTL;
2338 /* NameServer */
2339 pring->prt[2].type = FC_COMMON_TRANSPORT_ULP;
2340 pring->prt[2].lpfc_sli_rcv_unsol_event =
2341 lpfc_ct_unsol_event;
2342 pring->prt[3].profile = 0; /* Mask 3 */
2343 /* NameServer response */
2344 pring->prt[3].rctl = FC_SOL_CTL;
2345 /* NameServer */
2346 pring->prt[3].type = FC_COMMON_TRANSPORT_ULP;
2347 pring->prt[3].lpfc_sli_rcv_unsol_event =
2348 lpfc_ct_unsol_event;
2349 break;
2350 }
2351 totiocb += (pring->numCiocb + pring->numRiocb);
2352 }
2353 if (totiocb > MAX_SLI2_IOCB) {
2354 /* Too many cmd / rsp ring entries in SLI2 SLIM */
2355 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2356 "%d:0462 Too many cmd / rsp ring entries in "
2357 "SLI2 SLIM Data: x%x x%x\n",
2358 phba->brd_no, totiocb, MAX_SLI2_IOCB);
2359 }
2360
2361 return 0;
2362 }
2363
2364 int
2365 lpfc_sli_queue_setup(struct lpfc_hba * phba)
2366 {
2367 struct lpfc_sli *psli;
2368 struct lpfc_sli_ring *pring;
2369 int i;
2370
2371 psli = &phba->sli;
2372 spin_lock_irq(phba->host->host_lock);
2373 INIT_LIST_HEAD(&psli->mboxq);
2374 /* Initialize list headers for txq and txcmplq as double linked lists */
2375 for (i = 0; i < psli->num_rings; i++) {
2376 pring = &psli->ring[i];
2377 pring->ringno = i;
2378 pring->next_cmdidx = 0;
2379 pring->local_getidx = 0;
2380 pring->cmdidx = 0;
2381 INIT_LIST_HEAD(&pring->txq);
2382 INIT_LIST_HEAD(&pring->txcmplq);
2383 INIT_LIST_HEAD(&pring->iocb_continueq);
2384 INIT_LIST_HEAD(&pring->postbufq);
2385 }
2386 spin_unlock_irq(phba->host->host_lock);
2387 return (1);
2388 }
2389
2390 int
2391 lpfc_sli_hba_down(struct lpfc_hba * phba)
2392 {
2393 struct lpfc_sli *psli;
2394 struct lpfc_sli_ring *pring;
2395 LPFC_MBOXQ_t *pmb;
2396 struct lpfc_iocbq *iocb, *next_iocb;
2397 IOCB_t *icmd = NULL;
2398 int i;
2399 unsigned long flags = 0;
2400
2401 psli = &phba->sli;
2402 lpfc_hba_down_prep(phba);
2403
2404 spin_lock_irqsave(phba->host->host_lock, flags);
2405
2406 for (i = 0; i < psli->num_rings; i++) {
2407 pring = &psli->ring[i];
2408 pring->flag |= LPFC_DEFERRED_RING_EVENT;
2409
2410 /*
2411 * Error everything on the txq since these iocbs have not been
2412 * given to the FW yet.
2413 */
2414 pring->txq_cnt = 0;
2415
2416 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2417 list_del_init(&iocb->list);
2418 if (iocb->iocb_cmpl) {
2419 icmd = &iocb->iocb;
2420 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2421 icmd->un.ulpWord[4] = IOERR_SLI_DOWN;
2422 spin_unlock_irqrestore(phba->host->host_lock,
2423 flags);
2424 (iocb->iocb_cmpl) (phba, iocb, iocb);
2425 spin_lock_irqsave(phba->host->host_lock, flags);
2426 } else
2427 lpfc_sli_release_iocbq(phba, iocb);
2428 }
2429
2430 INIT_LIST_HEAD(&(pring->txq));
2431
2432 kfree(pring->fast_lookup);
2433 pring->fast_lookup = NULL;
2434 }
2435
2436 spin_unlock_irqrestore(phba->host->host_lock, flags);
2437
2438 /* Return any active mbox cmds */
2439 del_timer_sync(&psli->mbox_tmo);
2440 spin_lock_irqsave(phba->host->host_lock, flags);
2441 phba->work_hba_events &= ~WORKER_MBOX_TMO;
2442 if (psli->mbox_active) {
2443 pmb = psli->mbox_active;
2444 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
2445 if (pmb->mbox_cmpl) {
2446 spin_unlock_irqrestore(phba->host->host_lock, flags);
2447 pmb->mbox_cmpl(phba,pmb);
2448 spin_lock_irqsave(phba->host->host_lock, flags);
2449 }
2450 }
2451 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2452 psli->mbox_active = NULL;
2453
2454 /* Return any pending mbox cmds */
2455 while ((pmb = lpfc_mbox_get(phba)) != NULL) {
2456 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
2457 if (pmb->mbox_cmpl) {
2458 spin_unlock_irqrestore(phba->host->host_lock, flags);
2459 pmb->mbox_cmpl(phba,pmb);
2460 spin_lock_irqsave(phba->host->host_lock, flags);
2461 }
2462 }
2463
2464 INIT_LIST_HEAD(&psli->mboxq);
2465
2466 spin_unlock_irqrestore(phba->host->host_lock, flags);
2467
2468 /*
2469 * Provided the hba is not in an error state, reset it. It is not
2470 * capable of IO anymore.
2471 */
2472 if (phba->hba_state != LPFC_HBA_ERROR) {
2473 phba->hba_state = LPFC_INIT_START;
2474 lpfc_sli_brdreset(phba, 1);
2475 }
2476
2477 return 1;
2478 }
2479
2480 void
2481 lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt)
2482 {
2483 uint32_t *src = srcp;
2484 uint32_t *dest = destp;
2485 uint32_t ldata;
2486 int i;
2487
2488 for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) {
2489 ldata = *src;
2490 ldata = le32_to_cpu(ldata);
2491 *dest = ldata;
2492 src++;
2493 dest++;
2494 }
2495 }
2496
2497 int
2498 lpfc_sli_ringpostbuf_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
2499 struct lpfc_dmabuf * mp)
2500 {
2501 /* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up
2502 later */
2503 list_add_tail(&mp->list, &pring->postbufq);
2504
2505 pring->postbufq_cnt++;
2506 return 0;
2507 }
2508
2509
2510 struct lpfc_dmabuf *
2511 lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2512 dma_addr_t phys)
2513 {
2514 struct lpfc_dmabuf *mp, *next_mp;
2515 struct list_head *slp = &pring->postbufq;
2516
2517 /* Search postbufq, from the begining, looking for a match on phys */
2518 list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
2519 if (mp->phys == phys) {
2520 list_del_init(&mp->list);
2521 pring->postbufq_cnt--;
2522 return mp;
2523 }
2524 }
2525
2526 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2527 "%d:0410 Cannot find virtual addr for mapped buf on "
2528 "ring %d Data x%llx x%p x%p x%x\n",
2529 phba->brd_no, pring->ringno, (unsigned long long)phys,
2530 slp->next, slp->prev, pring->postbufq_cnt);
2531 return NULL;
2532 }
2533
2534 static void
2535 lpfc_sli_abort_elsreq_cmpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
2536 struct lpfc_iocbq * rspiocb)
2537 {
2538 struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
2539 /* Free the resources associated with the ELS_REQUEST64 IOCB the driver
2540 * just aborted.
2541 * In this case, context2 = cmd, context2->next = rsp, context3 = bpl
2542 */
2543 if (cmdiocb->context2) {
2544 buf_ptr1 = (struct lpfc_dmabuf *) cmdiocb->context2;
2545
2546 /* Free the response IOCB before completing the abort
2547 command. */
2548 buf_ptr = NULL;
2549 list_remove_head((&buf_ptr1->list), buf_ptr,
2550 struct lpfc_dmabuf, list);
2551 if (buf_ptr) {
2552 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
2553 kfree(buf_ptr);
2554 }
2555 lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
2556 kfree(buf_ptr1);
2557 }
2558
2559 if (cmdiocb->context3) {
2560 buf_ptr = (struct lpfc_dmabuf *) cmdiocb->context3;
2561 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
2562 kfree(buf_ptr);
2563 }
2564
2565 lpfc_sli_release_iocbq(phba, cmdiocb);
2566 return;
2567 }
2568
2569 int
2570 lpfc_sli_issue_abort_iotag32(struct lpfc_hba * phba,
2571 struct lpfc_sli_ring * pring,
2572 struct lpfc_iocbq * cmdiocb)
2573 {
2574 struct lpfc_iocbq *abtsiocbp;
2575 IOCB_t *icmd = NULL;
2576 IOCB_t *iabt = NULL;
2577
2578 /* issue ABTS for this IOCB based on iotag */
2579 abtsiocbp = lpfc_sli_get_iocbq(phba);
2580 if (abtsiocbp == NULL)
2581 return 0;
2582
2583 iabt = &abtsiocbp->iocb;
2584 icmd = &cmdiocb->iocb;
2585 switch (icmd->ulpCommand) {
2586 case CMD_ELS_REQUEST64_CR:
2587 /* Even though we abort the ELS command, the firmware may access
2588 * the BPL or other resources before it processes our
2589 * ABORT_MXRI64. Thus we must delay reusing the cmdiocb
2590 * resources till the actual abort request completes.
2591 */
2592 abtsiocbp->context1 = (void *)((unsigned long)icmd->ulpCommand);
2593 abtsiocbp->context2 = cmdiocb->context2;
2594 abtsiocbp->context3 = cmdiocb->context3;
2595 cmdiocb->context2 = NULL;
2596 cmdiocb->context3 = NULL;
2597 abtsiocbp->iocb_cmpl = lpfc_sli_abort_elsreq_cmpl;
2598 break;
2599 default:
2600 lpfc_sli_release_iocbq(phba, abtsiocbp);
2601 return 0;
2602 }
2603
2604 iabt->un.amxri.abortType = ABORT_TYPE_ABTS;
2605 iabt->un.amxri.iotag32 = icmd->un.elsreq64.bdl.ulpIoTag32;
2606
2607 iabt->ulpLe = 1;
2608 iabt->ulpClass = CLASS3;
2609 iabt->ulpCommand = CMD_ABORT_MXRI64_CN;
2610
2611 if (lpfc_sli_issue_iocb(phba, pring, abtsiocbp, 0) == IOCB_ERROR) {
2612 lpfc_sli_release_iocbq(phba, abtsiocbp);
2613 return 0;
2614 }
2615
2616 return 1;
2617 }
2618
2619 static int
2620 lpfc_sli_validate_fcp_iocb(struct lpfc_iocbq *iocbq, uint16_t tgt_id,
2621 uint64_t lun_id, uint32_t ctx,
2622 lpfc_ctx_cmd ctx_cmd)
2623 {
2624 struct lpfc_scsi_buf *lpfc_cmd;
2625 struct scsi_cmnd *cmnd;
2626 int rc = 1;
2627
2628 if (!(iocbq->iocb_flag & LPFC_IO_FCP))
2629 return rc;
2630
2631 lpfc_cmd = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq);
2632 cmnd = lpfc_cmd->pCmd;
2633
2634 if (cmnd == NULL)
2635 return rc;
2636
2637 switch (ctx_cmd) {
2638 case LPFC_CTX_LUN:
2639 if ((cmnd->device->id == tgt_id) &&
2640 (cmnd->device->lun == lun_id))
2641 rc = 0;
2642 break;
2643 case LPFC_CTX_TGT:
2644 if (cmnd->device->id == tgt_id)
2645 rc = 0;
2646 break;
2647 case LPFC_CTX_CTX:
2648 if (iocbq->iocb.ulpContext == ctx)
2649 rc = 0;
2650 break;
2651 case LPFC_CTX_HOST:
2652 rc = 0;
2653 break;
2654 default:
2655 printk(KERN_ERR "%s: Unknown context cmd type, value %d\n",
2656 __FUNCTION__, ctx_cmd);
2657 break;
2658 }
2659
2660 return rc;
2661 }
2662
2663 int
2664 lpfc_sli_sum_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2665 uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd ctx_cmd)
2666 {
2667 struct lpfc_iocbq *iocbq;
2668 int sum, i;
2669
2670 for (i = 1, sum = 0; i <= phba->sli.last_iotag; i++) {
2671 iocbq = phba->sli.iocbq_lookup[i];
2672
2673 if (lpfc_sli_validate_fcp_iocb (iocbq, tgt_id, lun_id,
2674 0, ctx_cmd) == 0)
2675 sum++;
2676 }
2677
2678 return sum;
2679 }
2680
2681 void
2682 lpfc_sli_abort_fcp_cmpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
2683 struct lpfc_iocbq * rspiocb)
2684 {
2685 spin_lock_irq(phba->host->host_lock);
2686 lpfc_sli_release_iocbq(phba, cmdiocb);
2687 spin_unlock_irq(phba->host->host_lock);
2688 return;
2689 }
2690
2691 int
2692 lpfc_sli_abort_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2693 uint16_t tgt_id, uint64_t lun_id, uint32_t ctx,
2694 lpfc_ctx_cmd abort_cmd)
2695 {
2696 struct lpfc_iocbq *iocbq;
2697 struct lpfc_iocbq *abtsiocb;
2698 IOCB_t *cmd = NULL;
2699 int errcnt = 0, ret_val = 0;
2700 int i;
2701
2702 for (i = 1; i <= phba->sli.last_iotag; i++) {
2703 iocbq = phba->sli.iocbq_lookup[i];
2704
2705 if (lpfc_sli_validate_fcp_iocb (iocbq, tgt_id, lun_id,
2706 0, abort_cmd) != 0)
2707 continue;
2708
2709 /* issue ABTS for this IOCB based on iotag */
2710 abtsiocb = lpfc_sli_get_iocbq(phba);
2711 if (abtsiocb == NULL) {
2712 errcnt++;
2713 continue;
2714 }
2715
2716 cmd = &iocbq->iocb;
2717 abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS;
2718 abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext;
2719 abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag;
2720 abtsiocb->iocb.ulpLe = 1;
2721 abtsiocb->iocb.ulpClass = cmd->ulpClass;
2722
2723 if (phba->hba_state >= LPFC_LINK_UP)
2724 abtsiocb->iocb.ulpCommand = CMD_ABORT_XRI_CN;
2725 else
2726 abtsiocb->iocb.ulpCommand = CMD_CLOSE_XRI_CN;
2727
2728 /* Setup callback routine and issue the command. */
2729 abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
2730 ret_val = lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0);
2731 if (ret_val == IOCB_ERROR) {
2732 lpfc_sli_release_iocbq(phba, abtsiocb);
2733 errcnt++;
2734 continue;
2735 }
2736 }
2737
2738 return errcnt;
2739 }
2740
2741 static void
2742 lpfc_sli_wake_iocb_wait(struct lpfc_hba *phba,
2743 struct lpfc_iocbq *cmdiocbq,
2744 struct lpfc_iocbq *rspiocbq)
2745 {
2746 wait_queue_head_t *pdone_q;
2747 unsigned long iflags;
2748
2749 spin_lock_irqsave(phba->host->host_lock, iflags);
2750 cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
2751 if (cmdiocbq->context2 && rspiocbq)
2752 memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
2753 &rspiocbq->iocb, sizeof(IOCB_t));
2754
2755 pdone_q = cmdiocbq->context_un.wait_queue;
2756 spin_unlock_irqrestore(phba->host->host_lock, iflags);
2757 if (pdone_q)
2758 wake_up(pdone_q);
2759 return;
2760 }
2761
2762 /*
2763 * Issue the caller's iocb and wait for its completion, but no longer than the
2764 * caller's timeout. Note that iocb_flags is cleared before the
2765 * lpfc_sli_issue_call since the wake routine sets a unique value and by
2766 * definition this is a wait function.
2767 */
2768 int
2769 lpfc_sli_issue_iocb_wait(struct lpfc_hba * phba,
2770 struct lpfc_sli_ring * pring,
2771 struct lpfc_iocbq * piocb,
2772 struct lpfc_iocbq * prspiocbq,
2773 uint32_t timeout)
2774 {
2775 DECLARE_WAIT_QUEUE_HEAD(done_q);
2776 long timeleft, timeout_req = 0;
2777 int retval = IOCB_SUCCESS;
2778 uint32_t creg_val;
2779
2780 /*
2781 * If the caller has provided a response iocbq buffer, then context2
2782 * is NULL or its an error.
2783 */
2784 if (prspiocbq) {
2785 if (piocb->context2)
2786 return IOCB_ERROR;
2787 piocb->context2 = prspiocbq;
2788 }
2789
2790 piocb->iocb_cmpl = lpfc_sli_wake_iocb_wait;
2791 piocb->context_un.wait_queue = &done_q;
2792 piocb->iocb_flag &= ~LPFC_IO_WAKE;
2793
2794 if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
2795 creg_val = readl(phba->HCregaddr);
2796 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
2797 writel(creg_val, phba->HCregaddr);
2798 readl(phba->HCregaddr); /* flush */
2799 }
2800
2801 retval = lpfc_sli_issue_iocb(phba, pring, piocb, 0);
2802 if (retval == IOCB_SUCCESS) {
2803 timeout_req = timeout * HZ;
2804 spin_unlock_irq(phba->host->host_lock);
2805 timeleft = wait_event_timeout(done_q,
2806 piocb->iocb_flag & LPFC_IO_WAKE,
2807 timeout_req);
2808 spin_lock_irq(phba->host->host_lock);
2809
2810 if (timeleft == 0) {
2811 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2812 "%d:0329 IOCB wait timeout error - no "
2813 "wake response Data x%x\n",
2814 phba->brd_no, timeout);
2815 retval = IOCB_TIMEDOUT;
2816 } else if (!(piocb->iocb_flag & LPFC_IO_WAKE)) {
2817 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2818 "%d:0330 IOCB wake NOT set, "
2819 "Data x%x x%lx\n", phba->brd_no,
2820 timeout, (timeleft / jiffies));
2821 retval = IOCB_TIMEDOUT;
2822 } else {
2823 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
2824 "%d:0331 IOCB wake signaled\n",
2825 phba->brd_no);
2826 }
2827 } else {
2828 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
2829 "%d:0332 IOCB wait issue failed, Data x%x\n",
2830 phba->brd_no, retval);
2831 retval = IOCB_ERROR;
2832 }
2833
2834 if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
2835 creg_val = readl(phba->HCregaddr);
2836 creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
2837 writel(creg_val, phba->HCregaddr);
2838 readl(phba->HCregaddr); /* flush */
2839 }
2840
2841 if (prspiocbq)
2842 piocb->context2 = NULL;
2843
2844 piocb->context_un.wait_queue = NULL;
2845 piocb->iocb_cmpl = NULL;
2846 return retval;
2847 }
2848
2849 int
2850 lpfc_sli_issue_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq,
2851 uint32_t timeout)
2852 {
2853 DECLARE_WAIT_QUEUE_HEAD(done_q);
2854 DECLARE_WAITQUEUE(wq_entry, current);
2855 uint32_t timeleft = 0;
2856 int retval;
2857
2858 /* The caller must leave context1 empty. */
2859 if (pmboxq->context1 != 0) {
2860 return (MBX_NOT_FINISHED);
2861 }
2862
2863 /* setup wake call as IOCB callback */
2864 pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait;
2865 /* setup context field to pass wait_queue pointer to wake function */
2866 pmboxq->context1 = &done_q;
2867
2868 /* start to sleep before we wait, to avoid races */
2869 set_current_state(TASK_INTERRUPTIBLE);
2870 add_wait_queue(&done_q, &wq_entry);
2871
2872 /* now issue the command */
2873 retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
2874
2875 if (retval == MBX_BUSY || retval == MBX_SUCCESS) {
2876 timeleft = schedule_timeout(timeout * HZ);
2877 pmboxq->context1 = NULL;
2878 /* if schedule_timeout returns 0, we timed out and were not
2879 woken up */
2880 if (timeleft == 0) {
2881 retval = MBX_TIMEOUT;
2882 } else {
2883 retval = MBX_SUCCESS;
2884 }
2885 }
2886
2887
2888 set_current_state(TASK_RUNNING);
2889 remove_wait_queue(&done_q, &wq_entry);
2890 return retval;
2891 }
2892
2893 irqreturn_t
2894 lpfc_intr_handler(int irq, void *dev_id, struct pt_regs * regs)
2895 {
2896 struct lpfc_hba *phba;
2897 uint32_t ha_copy;
2898 uint32_t work_ha_copy;
2899 unsigned long status;
2900 int i;
2901 uint32_t control;
2902
2903 /*
2904 * Get the driver's phba structure from the dev_id and
2905 * assume the HBA is not interrupting.
2906 */
2907 phba = (struct lpfc_hba *) dev_id;
2908
2909 if (unlikely(!phba))
2910 return IRQ_NONE;
2911
2912 phba->sli.slistat.sli_intr++;
2913
2914 /*
2915 * Call the HBA to see if it is interrupting. If not, don't claim
2916 * the interrupt
2917 */
2918
2919 /* Ignore all interrupts during initialization. */
2920 if (unlikely(phba->hba_state < LPFC_LINK_DOWN))
2921 return IRQ_NONE;
2922
2923 /*
2924 * Read host attention register to determine interrupt source
2925 * Clear Attention Sources, except Error Attention (to
2926 * preserve status) and Link Attention
2927 */
2928 spin_lock(phba->host->host_lock);
2929 ha_copy = readl(phba->HAregaddr);
2930 writel((ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr);
2931 readl(phba->HAregaddr); /* flush */
2932 spin_unlock(phba->host->host_lock);
2933
2934 if (unlikely(!ha_copy))
2935 return IRQ_NONE;
2936
2937 work_ha_copy = ha_copy & phba->work_ha_mask;
2938
2939 if (unlikely(work_ha_copy)) {
2940 if (work_ha_copy & HA_LATT) {
2941 if (phba->sli.sli_flag & LPFC_PROCESS_LA) {
2942 /*
2943 * Turn off Link Attention interrupts
2944 * until CLEAR_LA done
2945 */
2946 spin_lock(phba->host->host_lock);
2947 phba->sli.sli_flag &= ~LPFC_PROCESS_LA;
2948 control = readl(phba->HCregaddr);
2949 control &= ~HC_LAINT_ENA;
2950 writel(control, phba->HCregaddr);
2951 readl(phba->HCregaddr); /* flush */
2952 spin_unlock(phba->host->host_lock);
2953 }
2954 else
2955 work_ha_copy &= ~HA_LATT;
2956 }
2957
2958 if (work_ha_copy & ~(HA_ERATT|HA_MBATT|HA_LATT)) {
2959 for (i = 0; i < phba->sli.num_rings; i++) {
2960 if (work_ha_copy & (HA_RXATT << (4*i))) {
2961 /*
2962 * Turn off Slow Rings interrupts
2963 */
2964 spin_lock(phba->host->host_lock);
2965 control = readl(phba->HCregaddr);
2966 control &= ~(HC_R0INT_ENA << i);
2967 writel(control, phba->HCregaddr);
2968 readl(phba->HCregaddr); /* flush */
2969 spin_unlock(phba->host->host_lock);
2970 }
2971 }
2972 }
2973
2974 if (work_ha_copy & HA_ERATT) {
2975 phba->hba_state = LPFC_HBA_ERROR;
2976 /*
2977 * There was a link/board error. Read the
2978 * status register to retrieve the error event
2979 * and process it.
2980 */
2981 phba->sli.slistat.err_attn_event++;
2982 /* Save status info */
2983 phba->work_hs = readl(phba->HSregaddr);
2984 phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
2985 phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
2986
2987 /* Clear Chip error bit */
2988 writel(HA_ERATT, phba->HAregaddr);
2989 readl(phba->HAregaddr); /* flush */
2990
2991 /*
2992 * Reseting the HBA is the only reliable way
2993 * to shutdown interrupt when there is a
2994 * ERROR.
2995 */
2996 lpfc_sli_send_reset(phba, phba->hba_state);
2997 }
2998
2999 spin_lock(phba->host->host_lock);
3000 phba->work_ha |= work_ha_copy;
3001 if (phba->work_wait)
3002 wake_up(phba->work_wait);
3003 spin_unlock(phba->host->host_lock);
3004 }
3005
3006 ha_copy &= ~(phba->work_ha_mask);
3007
3008 /*
3009 * Process all events on FCP ring. Take the optimized path for
3010 * FCP IO. Any other IO is slow path and is handled by
3011 * the worker thread.
3012 */
3013 status = (ha_copy & (HA_RXMASK << (4*LPFC_FCP_RING)));
3014 status >>= (4*LPFC_FCP_RING);
3015 if (status & HA_RXATT)
3016 lpfc_sli_handle_fast_ring_event(phba,
3017 &phba->sli.ring[LPFC_FCP_RING],
3018 status);
3019 return IRQ_HANDLED;
3020
3021 } /* lpfc_intr_handler */
kernel source for telekom puls (alcatel/mediatek)