Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
[linux-3.10.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_cmnd.h>
28 #include <scsi/scsi_device.h>
29 #include <scsi/scsi_host.h>
30
31 #include "lpfc_hw.h"
32 #include "lpfc_sli.h"
33 #include "lpfc_disc.h"
34 #include "lpfc_scsi.h"
35 #include "lpfc.h"
36 #include "lpfc_crtn.h"
37 #include "lpfc_logmsg.h"
38 #include "lpfc_compat.h"
39
40 /*
41  * Define macro to log: Mailbox command x%x cannot issue Data
42  * This allows multiple uses of lpfc_msgBlk0311
43  * w/o perturbing log msg utility.
44  */
45 #define LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag) \
46                         lpfc_printf_log(phba, \
47                                 KERN_INFO, \
48                                 LOG_MBOX | LOG_SLI, \
49                                 "%d:0311 Mailbox command x%x cannot issue " \
50                                 "Data: x%x x%x x%x\n", \
51                                 phba->brd_no, \
52                                 mb->mbxCommand,         \
53                                 phba->hba_state,        \
54                                 psli->sli_flag, \
55                                 flag);
56
57
58 /* There are only four IOCB completion types. */
59 typedef enum _lpfc_iocb_type {
60         LPFC_UNKNOWN_IOCB,
61         LPFC_UNSOL_IOCB,
62         LPFC_SOL_IOCB,
63         LPFC_ABORT_IOCB
64 } lpfc_iocb_type;
65
66 /*
67  * Translate the iocb command to an iocb command type used to decide the final
68  * disposition of each completed IOCB.
69  */
70 static lpfc_iocb_type
71 lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd)
72 {
73         lpfc_iocb_type type = LPFC_UNKNOWN_IOCB;
74
75         if (iocb_cmnd > CMD_MAX_IOCB_CMD)
76                 return 0;
77
78         switch (iocb_cmnd) {
79         case CMD_XMIT_SEQUENCE_CR:
80         case CMD_XMIT_SEQUENCE_CX:
81         case CMD_XMIT_BCAST_CN:
82         case CMD_XMIT_BCAST_CX:
83         case CMD_ELS_REQUEST_CR:
84         case CMD_ELS_REQUEST_CX:
85         case CMD_CREATE_XRI_CR:
86         case CMD_CREATE_XRI_CX:
87         case CMD_GET_RPI_CN:
88         case CMD_XMIT_ELS_RSP_CX:
89         case CMD_GET_RPI_CR:
90         case CMD_FCP_IWRITE_CR:
91         case CMD_FCP_IWRITE_CX:
92         case CMD_FCP_IREAD_CR:
93         case CMD_FCP_IREAD_CX:
94         case CMD_FCP_ICMND_CR:
95         case CMD_FCP_ICMND_CX:
96         case CMD_ADAPTER_MSG:
97         case CMD_ADAPTER_DUMP:
98         case CMD_XMIT_SEQUENCE64_CR:
99         case CMD_XMIT_SEQUENCE64_CX:
100         case CMD_XMIT_BCAST64_CN:
101         case CMD_XMIT_BCAST64_CX:
102         case CMD_ELS_REQUEST64_CR:
103         case CMD_ELS_REQUEST64_CX:
104         case CMD_FCP_IWRITE64_CR:
105         case CMD_FCP_IWRITE64_CX:
106         case CMD_FCP_IREAD64_CR:
107         case CMD_FCP_IREAD64_CX:
108         case CMD_FCP_ICMND64_CR:
109         case CMD_FCP_ICMND64_CX:
110         case CMD_GEN_REQUEST64_CR:
111         case CMD_GEN_REQUEST64_CX:
112         case CMD_XMIT_ELS_RSP64_CX:
113                 type = LPFC_SOL_IOCB;
114                 break;
115         case CMD_ABORT_XRI_CN:
116         case CMD_ABORT_XRI_CX:
117         case CMD_CLOSE_XRI_CN:
118         case CMD_CLOSE_XRI_CX:
119         case CMD_XRI_ABORTED_CX:
120         case CMD_ABORT_MXRI64_CN:
121                 type = LPFC_ABORT_IOCB;
122                 break;
123         case CMD_RCV_SEQUENCE_CX:
124         case CMD_RCV_ELS_REQ_CX:
125         case CMD_RCV_SEQUENCE64_CX:
126         case CMD_RCV_ELS_REQ64_CX:
127                 type = LPFC_UNSOL_IOCB;
128                 break;
129         default:
130                 type = LPFC_UNKNOWN_IOCB;
131                 break;
132         }
133
134         return type;
135 }
136
137 static int
138 lpfc_sli_ring_map(struct lpfc_hba * phba, LPFC_MBOXQ_t *pmb)
139 {
140         struct lpfc_sli *psli = &phba->sli;
141         MAILBOX_t *pmbox = &pmb->mb;
142         int i, rc;
143
144         for (i = 0; i < psli->num_rings; i++) {
145                 phba->hba_state = LPFC_INIT_MBX_CMDS;
146                 lpfc_config_ring(phba, i, pmb);
147                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
148                 if (rc != MBX_SUCCESS) {
149                         lpfc_printf_log(phba,
150                                         KERN_ERR,
151                                         LOG_INIT,
152                                         "%d:0446 Adapter failed to init, "
153                                         "mbxCmd x%x CFG_RING, mbxStatus x%x, "
154                                         "ring %d\n",
155                                         phba->brd_no,
156                                         pmbox->mbxCommand,
157                                         pmbox->mbxStatus,
158                                         i);
159                         phba->hba_state = LPFC_HBA_ERROR;
160                         return -ENXIO;
161                 }
162         }
163         return 0;
164 }
165
166 static int
167 lpfc_sli_ringtxcmpl_put(struct lpfc_hba * phba,
168                         struct lpfc_sli_ring * pring, struct lpfc_iocbq * piocb)
169 {
170         uint16_t iotag;
171
172         list_add_tail(&piocb->list, &pring->txcmplq);
173         pring->txcmplq_cnt++;
174         if (unlikely(pring->ringno == LPFC_ELS_RING))
175                 mod_timer(&phba->els_tmofunc,
176                                         jiffies + HZ * (phba->fc_ratov << 1));
177
178         if (pring->fast_lookup) {
179                 /* Setup fast lookup based on iotag for completion */
180                 iotag = piocb->iocb.ulpIoTag;
181                 if (iotag && (iotag < pring->fast_iotag))
182                         *(pring->fast_lookup + iotag) = piocb;
183                 else {
184
185                         /* Cmd ring <ringno> put: iotag <iotag> greater then
186                            configured max <fast_iotag> wd0 <icmd> */
187                         lpfc_printf_log(phba,
188                                         KERN_ERR,
189                                         LOG_SLI,
190                                         "%d:0316 Cmd ring %d put: iotag x%x "
191                                         "greater then configured max x%x "
192                                         "wd0 x%x\n",
193                                         phba->brd_no,
194                                         pring->ringno, iotag,
195                                         pring->fast_iotag,
196                                         *(((uint32_t *)(&piocb->iocb)) + 7));
197                 }
198         }
199         return (0);
200 }
201
202 static struct lpfc_iocbq *
203 lpfc_sli_ringtx_get(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
204 {
205         struct list_head *dlp;
206         struct lpfc_iocbq *cmd_iocb;
207
208         dlp = &pring->txq;
209         cmd_iocb = NULL;
210         list_remove_head((&pring->txq), cmd_iocb,
211                          struct lpfc_iocbq,
212                          list);
213         if (cmd_iocb) {
214                 /* If the first ptr is not equal to the list header,
215                  * deque the IOCBQ_t and return it.
216                  */
217                 pring->txq_cnt--;
218         }
219         return (cmd_iocb);
220 }
221
222 static IOCB_t *
223 lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
224 {
225         struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
226         uint32_t  max_cmd_idx = pring->numCiocb;
227         IOCB_t *iocb = NULL;
228
229         if ((pring->next_cmdidx == pring->cmdidx) &&
230            (++pring->next_cmdidx >= max_cmd_idx))
231                 pring->next_cmdidx = 0;
232
233         if (unlikely(pring->local_getidx == pring->next_cmdidx)) {
234
235                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
236
237                 if (unlikely(pring->local_getidx >= max_cmd_idx)) {
238                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
239                                         "%d:0315 Ring %d issue: portCmdGet %d "
240                                         "is bigger then cmd ring %d\n",
241                                         phba->brd_no, pring->ringno,
242                                         pring->local_getidx, max_cmd_idx);
243
244                         phba->hba_state = LPFC_HBA_ERROR;
245                         /*
246                          * All error attention handlers are posted to
247                          * worker thread
248                          */
249                         phba->work_ha |= HA_ERATT;
250                         phba->work_hs = HS_FFER3;
251                         if (phba->work_wait)
252                                 wake_up(phba->work_wait);
253
254                         return NULL;
255                 }
256
257                 if (pring->local_getidx == pring->next_cmdidx)
258                         return NULL;
259         }
260
261         iocb = IOCB_ENTRY(pring->cmdringaddr, pring->cmdidx);
262
263         return iocb;
264 }
265
266 static uint32_t
267 lpfc_sli_next_iotag(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
268 {
269         uint32_t search_start;
270
271         if (pring->fast_lookup == NULL) {
272                 pring->iotag_ctr++;
273                 if (pring->iotag_ctr >= pring->iotag_max)
274                         pring->iotag_ctr = 1;
275                 return pring->iotag_ctr;
276         }
277
278         search_start = pring->iotag_ctr;
279
280         do {
281                 pring->iotag_ctr++;
282                 if (pring->iotag_ctr >= pring->fast_iotag)
283                         pring->iotag_ctr = 1;
284
285                 if (*(pring->fast_lookup + pring->iotag_ctr) == NULL)
286                         return pring->iotag_ctr;
287
288         } while (pring->iotag_ctr != search_start);
289
290         /*
291          * Outstanding I/O count for ring <ringno> is at max <fast_iotag>
292          */
293         lpfc_printf_log(phba,
294                 KERN_ERR,
295                 LOG_SLI,
296                 "%d:0318 Outstanding I/O count for ring %d is at max x%x\n",
297                 phba->brd_no,
298                 pring->ringno,
299                 pring->fast_iotag);
300         return (0);
301 }
302
303 static void
304 lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
305                 IOCB_t *iocb, struct lpfc_iocbq *nextiocb)
306 {
307         /*
308          * Allocate and set up an iotag
309          */
310         nextiocb->iocb.ulpIoTag =
311                 lpfc_sli_next_iotag(phba, &phba->sli.ring[phba->sli.fcp_ring]);
312
313         /*
314          * Issue iocb command to adapter
315          */
316         lpfc_sli_pcimem_bcopy(&nextiocb->iocb, iocb, sizeof (IOCB_t));
317         wmb();
318         pring->stats.iocb_cmd++;
319
320         /*
321          * If there is no completion routine to call, we can release the
322          * IOCB buffer back right now. For IOCBs, like QUE_RING_BUF,
323          * that have no rsp ring completion, iocb_cmpl MUST be NULL.
324          */
325         if (nextiocb->iocb_cmpl)
326                 lpfc_sli_ringtxcmpl_put(phba, pring, nextiocb);
327         else {
328                 list_add_tail(&nextiocb->list, &phba->lpfc_iocb_list);
329         }
330
331         /*
332          * Let the HBA know what IOCB slot will be the next one the
333          * driver will put a command into.
334          */
335         pring->cmdidx = pring->next_cmdidx;
336         writeb(pring->cmdidx, phba->MBslimaddr
337                + (SLIMOFF + (pring->ringno * 2)) * 4);
338 }
339
340 static void
341 lpfc_sli_update_full_ring(struct lpfc_hba * phba,
342                           struct lpfc_sli_ring *pring)
343 {
344         int ringno = pring->ringno;
345
346         pring->flag |= LPFC_CALL_RING_AVAILABLE;
347
348         wmb();
349
350         /*
351          * Set ring 'ringno' to SET R0CE_REQ in Chip Att register.
352          * The HBA will tell us when an IOCB entry is available.
353          */
354         writel((CA_R0ATT|CA_R0CE_REQ) << (ringno*4), phba->CAregaddr);
355         readl(phba->CAregaddr); /* flush */
356
357         pring->stats.iocb_cmd_full++;
358 }
359
360 static void
361 lpfc_sli_update_ring(struct lpfc_hba * phba,
362                      struct lpfc_sli_ring *pring)
363 {
364         int ringno = pring->ringno;
365
366         /*
367          * Tell the HBA that there is work to do in this ring.
368          */
369         wmb();
370         writel(CA_R0ATT << (ringno * 4), phba->CAregaddr);
371         readl(phba->CAregaddr); /* flush */
372 }
373
374 static void
375 lpfc_sli_resume_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
376 {
377         IOCB_t *iocb;
378         struct lpfc_iocbq *nextiocb;
379
380         /*
381          * Check to see if:
382          *  (a) there is anything on the txq to send
383          *  (b) link is up
384          *  (c) link attention events can be processed (fcp ring only)
385          *  (d) IOCB processing is not blocked by the outstanding mbox command.
386          */
387         if (pring->txq_cnt &&
388             (phba->hba_state > LPFC_LINK_DOWN) &&
389             (pring->ringno != phba->sli.fcp_ring ||
390              phba->sli.sli_flag & LPFC_PROCESS_LA) &&
391             !(pring->flag & LPFC_STOP_IOCB_MBX)) {
392
393                 while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
394                        (nextiocb = lpfc_sli_ringtx_get(phba, pring)))
395                         lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
396
397                 if (iocb)
398                         lpfc_sli_update_ring(phba, pring);
399                 else
400                         lpfc_sli_update_full_ring(phba, pring);
401         }
402
403         return;
404 }
405
406 /* lpfc_sli_turn_on_ring is only called by lpfc_sli_handle_mb_event below */
407 static void
408 lpfc_sli_turn_on_ring(struct lpfc_hba * phba, int ringno)
409 {
410         struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[ringno];
411
412         /* If the ring is active, flag it */
413         if (phba->sli.ring[ringno].cmdringaddr) {
414                 if (phba->sli.ring[ringno].flag & LPFC_STOP_IOCB_MBX) {
415                         phba->sli.ring[ringno].flag &= ~LPFC_STOP_IOCB_MBX;
416                         /*
417                          * Force update of the local copy of cmdGetInx
418                          */
419                         phba->sli.ring[ringno].local_getidx
420                                 = le32_to_cpu(pgp->cmdGetInx);
421                         spin_lock_irq(phba->host->host_lock);
422                         lpfc_sli_resume_iocb(phba, &phba->sli.ring[ringno]);
423                         spin_unlock_irq(phba->host->host_lock);
424                 }
425         }
426 }
427
428 static int
429 lpfc_sli_chk_mbx_command(uint8_t mbxCommand)
430 {
431         uint8_t ret;
432
433         switch (mbxCommand) {
434         case MBX_LOAD_SM:
435         case MBX_READ_NV:
436         case MBX_WRITE_NV:
437         case MBX_RUN_BIU_DIAG:
438         case MBX_INIT_LINK:
439         case MBX_DOWN_LINK:
440         case MBX_CONFIG_LINK:
441         case MBX_CONFIG_RING:
442         case MBX_RESET_RING:
443         case MBX_READ_CONFIG:
444         case MBX_READ_RCONFIG:
445         case MBX_READ_SPARM:
446         case MBX_READ_STATUS:
447         case MBX_READ_RPI:
448         case MBX_READ_XRI:
449         case MBX_READ_REV:
450         case MBX_READ_LNK_STAT:
451         case MBX_REG_LOGIN:
452         case MBX_UNREG_LOGIN:
453         case MBX_READ_LA:
454         case MBX_CLEAR_LA:
455         case MBX_DUMP_MEMORY:
456         case MBX_DUMP_CONTEXT:
457         case MBX_RUN_DIAGS:
458         case MBX_RESTART:
459         case MBX_UPDATE_CFG:
460         case MBX_DOWN_LOAD:
461         case MBX_DEL_LD_ENTRY:
462         case MBX_RUN_PROGRAM:
463         case MBX_SET_MASK:
464         case MBX_SET_SLIM:
465         case MBX_UNREG_D_ID:
466         case MBX_CONFIG_FARP:
467         case MBX_LOAD_AREA:
468         case MBX_RUN_BIU_DIAG64:
469         case MBX_CONFIG_PORT:
470         case MBX_READ_SPARM64:
471         case MBX_READ_RPI64:
472         case MBX_REG_LOGIN64:
473         case MBX_READ_LA64:
474         case MBX_FLASH_WR_ULA:
475         case MBX_SET_DEBUG:
476         case MBX_LOAD_EXP_ROM:
477                 ret = mbxCommand;
478                 break;
479         default:
480                 ret = MBX_SHUTDOWN;
481                 break;
482         }
483         return (ret);
484 }
485 static void
486 lpfc_sli_wake_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
487 {
488         wait_queue_head_t *pdone_q;
489
490         /*
491          * If pdone_q is empty, the driver thread gave up waiting and
492          * continued running.
493          */
494         pdone_q = (wait_queue_head_t *) pmboxq->context1;
495         if (pdone_q)
496                 wake_up_interruptible(pdone_q);
497         return;
498 }
499
500 void
501 lpfc_sli_def_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
502 {
503         struct lpfc_dmabuf *mp;
504         mp = (struct lpfc_dmabuf *) (pmb->context1);
505         if (mp) {
506                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
507                 kfree(mp);
508         }
509         mempool_free( pmb, phba->mbox_mem_pool);
510         return;
511 }
512
513 int
514 lpfc_sli_handle_mb_event(struct lpfc_hba * phba)
515 {
516         MAILBOX_t *mbox;
517         MAILBOX_t *pmbox;
518         LPFC_MBOXQ_t *pmb;
519         struct lpfc_sli *psli;
520         int i, rc;
521         uint32_t process_next;
522
523         psli = &phba->sli;
524         /* We should only get here if we are in SLI2 mode */
525         if (!(phba->sli.sli_flag & LPFC_SLI2_ACTIVE)) {
526                 return (1);
527         }
528
529         phba->sli.slistat.mbox_event++;
530
531         /* Get a Mailbox buffer to setup mailbox commands for callback */
532         if ((pmb = phba->sli.mbox_active)) {
533                 pmbox = &pmb->mb;
534                 mbox = &phba->slim2p->mbx;
535
536                 /* First check out the status word */
537                 lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof (uint32_t));
538
539                 /* Sanity check to ensure the host owns the mailbox */
540                 if (pmbox->mbxOwner != OWN_HOST) {
541                         /* Lets try for a while */
542                         for (i = 0; i < 10240; i++) {
543                                 /* First copy command data */
544                                 lpfc_sli_pcimem_bcopy(mbox, pmbox,
545                                                         sizeof (uint32_t));
546                                 if (pmbox->mbxOwner == OWN_HOST)
547                                         goto mbout;
548                         }
549                         /* Stray Mailbox Interrupt, mbxCommand <cmd> mbxStatus
550                            <status> */
551                         lpfc_printf_log(phba,
552                                         KERN_ERR,
553                                         LOG_MBOX | LOG_SLI,
554                                         "%d:0304 Stray Mailbox Interrupt "
555                                         "mbxCommand x%x mbxStatus x%x\n",
556                                         phba->brd_no,
557                                         pmbox->mbxCommand,
558                                         pmbox->mbxStatus);
559
560                         spin_lock_irq(phba->host->host_lock);
561                         phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE;
562                         spin_unlock_irq(phba->host->host_lock);
563                         return (1);
564                 }
565
566               mbout:
567                 del_timer_sync(&phba->sli.mbox_tmo);
568                 phba->work_hba_events &= ~WORKER_MBOX_TMO;
569
570                 /*
571                  * It is a fatal error if unknown mbox command completion.
572                  */
573                 if (lpfc_sli_chk_mbx_command(pmbox->mbxCommand) ==
574                     MBX_SHUTDOWN) {
575
576                         /* Unknow mailbox command compl */
577                         lpfc_printf_log(phba,
578                                 KERN_ERR,
579                                 LOG_MBOX | LOG_SLI,
580                                 "%d:0323 Unknown Mailbox command %x Cmpl\n",
581                                 phba->brd_no,
582                                 pmbox->mbxCommand);
583                         phba->hba_state = LPFC_HBA_ERROR;
584                         phba->work_hs = HS_FFER3;
585                         lpfc_handle_eratt(phba);
586                         return (0);
587                 }
588
589                 phba->sli.mbox_active = NULL;
590                 if (pmbox->mbxStatus) {
591                         phba->sli.slistat.mbox_stat_err++;
592                         if (pmbox->mbxStatus == MBXERR_NO_RESOURCES) {
593                                 /* Mbox cmd cmpl error - RETRYing */
594                                 lpfc_printf_log(phba,
595                                         KERN_INFO,
596                                         LOG_MBOX | LOG_SLI,
597                                         "%d:0305 Mbox cmd cmpl error - "
598                                         "RETRYing Data: x%x x%x x%x x%x\n",
599                                         phba->brd_no,
600                                         pmbox->mbxCommand,
601                                         pmbox->mbxStatus,
602                                         pmbox->un.varWords[0],
603                                         phba->hba_state);
604                                 pmbox->mbxStatus = 0;
605                                 pmbox->mbxOwner = OWN_HOST;
606                                 spin_lock_irq(phba->host->host_lock);
607                                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
608                                 spin_unlock_irq(phba->host->host_lock);
609                                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
610                                 if (rc == MBX_SUCCESS)
611                                         return (0);
612                         }
613                 }
614
615                 /* Mailbox cmd <cmd> Cmpl <cmpl> */
616                 lpfc_printf_log(phba,
617                                 KERN_INFO,
618                                 LOG_MBOX | LOG_SLI,
619                                 "%d:0307 Mailbox cmd x%x Cmpl x%p "
620                                 "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x\n",
621                                 phba->brd_no,
622                                 pmbox->mbxCommand,
623                                 pmb->mbox_cmpl,
624                                 *((uint32_t *) pmbox),
625                                 pmbox->un.varWords[0],
626                                 pmbox->un.varWords[1],
627                                 pmbox->un.varWords[2],
628                                 pmbox->un.varWords[3],
629                                 pmbox->un.varWords[4],
630                                 pmbox->un.varWords[5],
631                                 pmbox->un.varWords[6],
632                                 pmbox->un.varWords[7]);
633
634                 if (pmb->mbox_cmpl) {
635                         lpfc_sli_pcimem_bcopy(mbox, pmbox, MAILBOX_CMD_SIZE);
636                         pmb->mbox_cmpl(phba,pmb);
637                 }
638         }
639
640
641         do {
642                 process_next = 0;       /* by default don't loop */
643                 spin_lock_irq(phba->host->host_lock);
644                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
645
646                 /* Process next mailbox command if there is one */
647                 if ((pmb = lpfc_mbox_get(phba))) {
648                         spin_unlock_irq(phba->host->host_lock);
649                         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
650                         if (rc == MBX_NOT_FINISHED) {
651                                 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
652                                 pmb->mbox_cmpl(phba,pmb);
653                                 process_next = 1;
654                                 continue;       /* loop back */
655                         }
656                 } else {
657                         spin_unlock_irq(phba->host->host_lock);
658                         /* Turn on IOCB processing */
659                         for (i = 0; i < phba->sli.num_rings; i++) {
660                                 lpfc_sli_turn_on_ring(phba, i);
661                         }
662
663                         /* Free any lpfc_dmabuf's waiting for mbox cmd cmpls */
664                         while (!list_empty(&phba->freebufList)) {
665                                 struct lpfc_dmabuf *mp;
666
667                                 mp = NULL;
668                                 list_remove_head((&phba->freebufList),
669                                                  mp,
670                                                  struct lpfc_dmabuf,
671                                                  list);
672                                 if (mp) {
673                                         lpfc_mbuf_free(phba, mp->virt,
674                                                        mp->phys);
675                                         kfree(mp);
676                                 }
677                         }
678                 }
679
680         } while (process_next);
681
682         return (0);
683 }
684 static int
685 lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
686                             struct lpfc_iocbq *saveq)
687 {
688         IOCB_t           * irsp;
689         WORD5            * w5p;
690         uint32_t           Rctl, Type;
691         uint32_t           match, i;
692
693         match = 0;
694         irsp = &(saveq->iocb);
695         if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX)
696             || (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX)) {
697                 Rctl = FC_ELS_REQ;
698                 Type = FC_ELS_DATA;
699         } else {
700                 w5p =
701                     (WORD5 *) & (saveq->iocb.un.
702                                  ulpWord[5]);
703                 Rctl = w5p->hcsw.Rctl;
704                 Type = w5p->hcsw.Type;
705
706                 /* Firmware Workaround */
707                 if ((Rctl == 0) && (pring->ringno == LPFC_ELS_RING) &&
708                         (irsp->ulpCommand == CMD_RCV_SEQUENCE64_CX)) {
709                         Rctl = FC_ELS_REQ;
710                         Type = FC_ELS_DATA;
711                         w5p->hcsw.Rctl = Rctl;
712                         w5p->hcsw.Type = Type;
713                 }
714         }
715         /* unSolicited Responses */
716         if (pring->prt[0].profile) {
717                 (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring, saveq);
718                 match = 1;
719         } else {
720                 /* We must search, based on rctl / type
721                    for the right routine */
722                 for (i = 0; i < pring->num_mask;
723                      i++) {
724                         if ((pring->prt[i].rctl ==
725                              Rctl)
726                             && (pring->prt[i].
727                                 type == Type)) {
728                                 (pring->prt[i].lpfc_sli_rcv_unsol_event)
729                                         (phba, pring, saveq);
730                                 match = 1;
731                                 break;
732                         }
733                 }
734         }
735         if (match == 0) {
736                 /* Unexpected Rctl / Type received */
737                 /* Ring <ringno> handler: unexpected
738                    Rctl <Rctl> Type <Type> received */
739                 lpfc_printf_log(phba,
740                                 KERN_WARNING,
741                                 LOG_SLI,
742                                 "%d:0313 Ring %d handler: unexpected Rctl x%x "
743                                 "Type x%x received \n",
744                                 phba->brd_no,
745                                 pring->ringno,
746                                 Rctl,
747                                 Type);
748         }
749         return(1);
750 }
751
752 static struct lpfc_iocbq *
753 lpfc_sli_txcmpl_ring_search_slow(struct lpfc_sli_ring * pring,
754                                  struct lpfc_iocbq * prspiocb)
755 {
756         IOCB_t *icmd = NULL;
757         IOCB_t *irsp = NULL;
758         struct lpfc_iocbq *cmd_iocb;
759         struct lpfc_iocbq *iocb, *next_iocb;
760         uint16_t iotag;
761
762         irsp = &prspiocb->iocb;
763         iotag = irsp->ulpIoTag;
764         cmd_iocb = NULL;
765
766         /* Search through txcmpl from the begining */
767         list_for_each_entry_safe(iocb, next_iocb, &(pring->txcmplq), list) {
768                 icmd = &iocb->iocb;
769                 if (iotag == icmd->ulpIoTag) {
770                         /* Found a match.  */
771                         cmd_iocb = iocb;
772                         list_del(&iocb->list);
773                         pring->txcmplq_cnt--;
774                         break;
775                 }
776         }
777
778         return (cmd_iocb);
779 }
780
781 static struct lpfc_iocbq *
782 lpfc_sli_txcmpl_ring_iotag_lookup(struct lpfc_hba * phba,
783                         struct lpfc_sli_ring * pring,
784                         struct lpfc_iocbq * prspiocb)
785 {
786         IOCB_t *irsp = NULL;
787         struct lpfc_iocbq *cmd_iocb = NULL;
788         uint16_t iotag;
789
790         if (unlikely(pring->fast_lookup == NULL))
791                 return NULL;
792
793         /* Use fast lookup based on iotag for completion */
794         irsp = &prspiocb->iocb;
795         iotag = irsp->ulpIoTag;
796         if (iotag < pring->fast_iotag) {
797                 cmd_iocb = *(pring->fast_lookup + iotag);
798                 *(pring->fast_lookup + iotag) = NULL;
799                 if (cmd_iocb) {
800                         list_del(&cmd_iocb->list);
801                         pring->txcmplq_cnt--;
802                         return cmd_iocb;
803                 } else {
804                         /*
805                          * This is clearly an error.  A ring that uses iotags
806                          * should never have a interrupt for a completion that
807                          * is not on the ring.  Return NULL and log a error.
808                          */
809                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
810                                 "%d:0327 Rsp ring %d error -  command "
811                                 "completion for iotag x%x not found\n",
812                                 phba->brd_no, pring->ringno, iotag);
813                         return NULL;
814                 }
815         }
816
817         /*
818          * Rsp ring <ringno> get: iotag <iotag> greater then
819          * configured max <fast_iotag> wd0 <irsp>.  This is an
820          * error.  Just return NULL.
821          */
822         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
823                         "%d:0317 Rsp ring %d get: iotag x%x greater then "
824                         "configured max x%x wd0 x%x\n",
825                         phba->brd_no, pring->ringno, iotag, pring->fast_iotag,
826                         *(((uint32_t *) irsp) + 7));
827         return NULL;
828 }
829
830 static int
831 lpfc_sli_process_sol_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
832                           struct lpfc_iocbq *saveq)
833 {
834         struct lpfc_iocbq * cmdiocbp;
835         int rc = 1;
836         unsigned long iflag;
837
838         /* Based on the iotag field, get the cmd IOCB from the txcmplq */
839         spin_lock_irqsave(phba->host->host_lock, iflag);
840         cmdiocbp = lpfc_sli_txcmpl_ring_search_slow(pring, saveq);
841         if (cmdiocbp) {
842                 if (cmdiocbp->iocb_cmpl) {
843                         /*
844                          * Post all ELS completions to the worker thread.
845                          * All other are passed to the completion callback.
846                          */
847                         if (pring->ringno == LPFC_ELS_RING) {
848                                 spin_unlock_irqrestore(phba->host->host_lock,
849                                                        iflag);
850                                 (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
851                                 spin_lock_irqsave(phba->host->host_lock, iflag);
852                         }
853                         else {
854                                 if (cmdiocbp->iocb_flag & LPFC_IO_POLL)
855                                         rc = 0;
856
857                                 spin_unlock_irqrestore(phba->host->host_lock,
858                                                        iflag);
859                                 (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
860                                 spin_lock_irqsave(phba->host->host_lock, iflag);
861                         }
862                 } else {
863                         list_add_tail(&cmdiocbp->list, &phba->lpfc_iocb_list);
864                 }
865         } else {
866                 /*
867                  * Unknown initiating command based on the response iotag.
868                  * This could be the case on the ELS ring because of
869                  * lpfc_els_abort().
870                  */
871                 if (pring->ringno != LPFC_ELS_RING) {
872                         /*
873                          * Ring <ringno> handler: unexpected completion IoTag
874                          * <IoTag>
875                          */
876                         lpfc_printf_log(phba,
877                                 KERN_WARNING,
878                                 LOG_SLI,
879                                 "%d:0322 Ring %d handler: unexpected "
880                                 "completion IoTag x%x Data: x%x x%x x%x x%x\n",
881                                 phba->brd_no,
882                                 pring->ringno,
883                                 saveq->iocb.ulpIoTag,
884                                 saveq->iocb.ulpStatus,
885                                 saveq->iocb.un.ulpWord[4],
886                                 saveq->iocb.ulpCommand,
887                                 saveq->iocb.ulpContext);
888                 }
889         }
890         spin_unlock_irqrestore(phba->host->host_lock, iflag);
891         return rc;
892 }
893
894 /*
895  * This routine presumes LPFC_FCP_RING handling and doesn't bother
896  * to check it explicitly.
897  */
898 static int
899 lpfc_sli_handle_fast_ring_event(struct lpfc_hba * phba,
900                                 struct lpfc_sli_ring * pring, uint32_t mask)
901 {
902         struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
903         IOCB_t *irsp = NULL;
904         IOCB_t *entry = NULL;
905         struct lpfc_iocbq *cmdiocbq = NULL;
906         struct lpfc_iocbq rspiocbq;
907         uint32_t status;
908         uint32_t portRspPut, portRspMax;
909         int rc = 1;
910         lpfc_iocb_type type;
911         unsigned long iflag;
912         uint32_t rsp_cmpl = 0;
913         void __iomem  *to_slim;
914
915         spin_lock_irqsave(phba->host->host_lock, iflag);
916         pring->stats.iocb_event++;
917
918         /*
919          * The next available response entry should never exceed the maximum
920          * entries.  If it does, treat it as an adapter hardware error.
921          */
922         portRspMax = pring->numRiocb;
923         portRspPut = le32_to_cpu(pgp->rspPutInx);
924         if (unlikely(portRspPut >= portRspMax)) {
925                 /*
926                  * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
927                  * rsp ring <portRspMax>
928                  */
929                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
930                                 "%d:0312 Ring %d handler: portRspPut %d "
931                                 "is bigger then rsp ring %d\n",
932                                 phba->brd_no, pring->ringno, portRspPut,
933                                 portRspMax);
934
935                 phba->hba_state = LPFC_HBA_ERROR;
936
937                 /* All error attention handlers are posted to worker thread */
938                 phba->work_ha |= HA_ERATT;
939                 phba->work_hs = HS_FFER3;
940                 if (phba->work_wait)
941                         wake_up(phba->work_wait);
942
943                 spin_unlock_irqrestore(phba->host->host_lock, iflag);
944                 return 1;
945         }
946
947         rmb();
948         while (pring->rspidx != portRspPut) {
949                 /*
950                  * Fetch an entry off the ring and copy it into a local data
951                  * structure.  The copy involves a byte-swap since the
952                  * network byte order and pci byte orders are different.
953                  */
954                 entry = (IOCB_t *) IOCB_ENTRY(pring->rspringaddr, pring->rspidx);
955                 lpfc_sli_pcimem_bcopy((uint32_t *) entry,
956                                       (uint32_t *) &rspiocbq.iocb,
957                                       sizeof (IOCB_t));
958                 irsp = &rspiocbq.iocb;
959
960                 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
961                 pring->stats.iocb_rsp++;
962                 rsp_cmpl++;
963
964                 if (unlikely(irsp->ulpStatus)) {
965                         /* Rsp ring <ringno> error: IOCB */
966                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
967                                 "%d:0326 Rsp Ring %d error: IOCB Data: "
968                                 "x%x x%x x%x x%x x%x x%x x%x x%x\n",
969                                 phba->brd_no, pring->ringno,
970                                 irsp->un.ulpWord[0], irsp->un.ulpWord[1],
971                                 irsp->un.ulpWord[2], irsp->un.ulpWord[3],
972                                 irsp->un.ulpWord[4], irsp->un.ulpWord[5],
973                                 *(((uint32_t *) irsp) + 6),
974                                 *(((uint32_t *) irsp) + 7));
975                 }
976
977                 switch (type) {
978                 case LPFC_ABORT_IOCB:
979                 case LPFC_SOL_IOCB:
980                         /*
981                          * Idle exchange closed via ABTS from port.  No iocb
982                          * resources need to be recovered.
983                          */
984                         if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
985                                 printk(KERN_INFO "%s: IOCB cmd 0x%x processed. "
986                                        "Skipping completion\n", __FUNCTION__,
987                                        irsp->ulpCommand);
988                                 break;
989                         }
990
991                         cmdiocbq = lpfc_sli_txcmpl_ring_iotag_lookup(phba,
992                                                                 pring,
993                                                                 &rspiocbq);
994                         if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
995                                 spin_unlock_irqrestore(
996                                        phba->host->host_lock, iflag);
997                                 (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
998                                                       &rspiocbq);
999                                 spin_lock_irqsave(phba->host->host_lock,
1000                                                   iflag);
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, irsp->ulpCommand,
1017                                         irsp->ulpStatus, irsp->ulpIoTag,
1018                                         irsp->ulpContext);
1019                         }
1020                         break;
1021                 }
1022
1023                 /*
1024                  * The response IOCB has been processed.  Update the ring
1025                  * pointer in SLIM.  If the port response put pointer has not
1026                  * been updated, sync the pgp->rspPutInx and fetch the new port
1027                  * response put pointer.
1028                  */
1029                 if (++pring->rspidx >= portRspMax)
1030                         pring->rspidx = 0;
1031
1032                 to_slim = phba->MBslimaddr +
1033                         (SLIMOFF + (pring->ringno * 2) + 1) * 4;
1034                 writeb(pring->rspidx, to_slim);
1035
1036                 if (pring->rspidx == portRspPut)
1037                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1038         }
1039
1040         if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) {
1041                 pring->stats.iocb_rsp_full++;
1042                 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1043                 writel(status, phba->CAregaddr);
1044                 readl(phba->CAregaddr);
1045         }
1046         if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1047                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1048                 pring->stats.iocb_cmd_empty++;
1049
1050                 /* Force update of the local copy of cmdGetInx */
1051                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1052                 lpfc_sli_resume_iocb(phba, pring);
1053
1054                 if ((pring->lpfc_sli_cmd_available))
1055                         (pring->lpfc_sli_cmd_available) (phba, pring);
1056
1057         }
1058
1059         spin_unlock_irqrestore(phba->host->host_lock, iflag);
1060         return rc;
1061 }
1062
1063
1064 int
1065 lpfc_sli_handle_slow_ring_event(struct lpfc_hba * phba,
1066                            struct lpfc_sli_ring * pring, uint32_t mask)
1067 {
1068         IOCB_t *entry;
1069         IOCB_t *irsp = NULL;
1070         struct lpfc_iocbq *rspiocbp = NULL;
1071         struct lpfc_iocbq *next_iocb;
1072         struct lpfc_iocbq *cmdiocbp;
1073         struct lpfc_iocbq *saveq;
1074         struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
1075         struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
1076         uint8_t iocb_cmd_type;
1077         lpfc_iocb_type type;
1078         uint32_t status, free_saveq;
1079         uint32_t portRspPut, portRspMax;
1080         int rc = 1;
1081         unsigned long iflag;
1082         void __iomem  *to_slim;
1083
1084         spin_lock_irqsave(phba->host->host_lock, iflag);
1085         pring->stats.iocb_event++;
1086
1087         /*
1088          * The next available response entry should never exceed the maximum
1089          * entries.  If it does, treat it as an adapter hardware error.
1090          */
1091         portRspMax = pring->numRiocb;
1092         portRspPut = le32_to_cpu(pgp->rspPutInx);
1093         if (portRspPut >= portRspMax) {
1094                 /*
1095                  * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
1096                  * rsp ring <portRspMax>
1097                  */
1098                 lpfc_printf_log(phba,
1099                                 KERN_ERR,
1100                                 LOG_SLI,
1101                                 "%d:0312 Ring %d handler: portRspPut %d "
1102                                 "is bigger then rsp ring %d\n",
1103                                 phba->brd_no,
1104                                 pring->ringno, portRspPut, portRspMax);
1105
1106                 phba->hba_state = LPFC_HBA_ERROR;
1107                 spin_unlock_irqrestore(phba->host->host_lock, iflag);
1108
1109                 phba->work_hs = HS_FFER3;
1110                 lpfc_handle_eratt(phba);
1111
1112                 return 1;
1113         }
1114
1115         rmb();
1116         lpfc_iocb_list = &phba->lpfc_iocb_list;
1117         while (pring->rspidx != portRspPut) {
1118                 /*
1119                  * Build a completion list and call the appropriate handler.
1120                  * The process is to get the next available response iocb, get
1121                  * a free iocb from the list, copy the response data into the
1122                  * free iocb, insert to the continuation list, and update the
1123                  * next response index to slim.  This process makes response
1124                  * iocb's in the ring available to DMA as fast as possible but
1125                  * pays a penalty for a copy operation.  Since the iocb is
1126                  * only 32 bytes, this penalty is considered small relative to
1127                  * the PCI reads for register values and a slim write.  When
1128                  * the ulpLe field is set, the entire Command has been
1129                  * received.
1130                  */
1131                 entry = IOCB_ENTRY(pring->rspringaddr, pring->rspidx);
1132                 list_remove_head(lpfc_iocb_list, rspiocbp, struct lpfc_iocbq,
1133                                  list);
1134                 if (rspiocbp == NULL) {
1135                         printk(KERN_ERR "%s: out of buffers! Failing "
1136                                "completion.\n", __FUNCTION__);
1137                         break;
1138                 }
1139
1140                 lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb, sizeof (IOCB_t));
1141                 irsp = &rspiocbp->iocb;
1142
1143                 if (++pring->rspidx >= portRspMax)
1144                         pring->rspidx = 0;
1145
1146                 to_slim = phba->MBslimaddr + (SLIMOFF + (pring->ringno * 2)
1147                                               + 1) * 4;
1148                 writeb(pring->rspidx, to_slim);
1149
1150                 if (list_empty(&(pring->iocb_continueq))) {
1151                         list_add(&rspiocbp->list, &(pring->iocb_continueq));
1152                 } else {
1153                         list_add_tail(&rspiocbp->list,
1154                                       &(pring->iocb_continueq));
1155                 }
1156
1157                 pring->iocb_continueq_cnt++;
1158                 if (irsp->ulpLe) {
1159                         /*
1160                          * By default, the driver expects to free all resources
1161                          * associated with this iocb completion.
1162                          */
1163                         free_saveq = 1;
1164                         saveq = list_get_first(&pring->iocb_continueq,
1165                                                struct lpfc_iocbq, list);
1166                         irsp = &(saveq->iocb);
1167                         list_del_init(&pring->iocb_continueq);
1168                         pring->iocb_continueq_cnt = 0;
1169
1170                         pring->stats.iocb_rsp++;
1171
1172                         if (irsp->ulpStatus) {
1173                                 /* Rsp ring <ringno> error: IOCB */
1174                                 lpfc_printf_log(phba,
1175                                         KERN_WARNING,
1176                                         LOG_SLI,
1177                                         "%d:0328 Rsp Ring %d error: IOCB Data: "
1178                                         "x%x x%x x%x x%x x%x x%x x%x x%x\n",
1179                                         phba->brd_no,
1180                                         pring->ringno,
1181                                         irsp->un.ulpWord[0],
1182                                         irsp->un.ulpWord[1],
1183                                         irsp->un.ulpWord[2],
1184                                         irsp->un.ulpWord[3],
1185                                         irsp->un.ulpWord[4],
1186                                         irsp->un.ulpWord[5],
1187                                         *(((uint32_t *) irsp) + 6),
1188                                         *(((uint32_t *) irsp) + 7));
1189                         }
1190
1191                         /*
1192                          * Fetch the IOCB command type and call the correct
1193                          * completion routine.  Solicited and Unsolicited
1194                          * IOCBs on the ELS ring get freed back to the
1195                          * lpfc_iocb_list by the discovery kernel thread.
1196                          */
1197                         iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK;
1198                         type = lpfc_sli_iocb_cmd_type(iocb_cmd_type);
1199                         if (type == LPFC_SOL_IOCB) {
1200                                 spin_unlock_irqrestore(phba->host->host_lock,
1201                                                        iflag);
1202                                 rc = lpfc_sli_process_sol_iocb(phba, pring,
1203                                         saveq);
1204                                 spin_lock_irqsave(phba->host->host_lock, iflag);
1205                         } else if (type == LPFC_UNSOL_IOCB) {
1206                                 spin_unlock_irqrestore(phba->host->host_lock,
1207                                                        iflag);
1208                                 rc = lpfc_sli_process_unsol_iocb(phba, pring,
1209                                         saveq);
1210                                 spin_lock_irqsave(phba->host->host_lock, iflag);
1211                         } else if (type == LPFC_ABORT_IOCB) {
1212                                 if ((irsp->ulpCommand != CMD_XRI_ABORTED_CX) &&
1213                                     ((cmdiocbp =
1214                                       lpfc_sli_txcmpl_ring_search_slow(pring,
1215                                                 saveq)))) {
1216                                         /* Call the specified completion
1217                                            routine */
1218                                         if (cmdiocbp->iocb_cmpl) {
1219                                                 spin_unlock_irqrestore(
1220                                                        phba->host->host_lock,
1221                                                        iflag);
1222                                                 (cmdiocbp->iocb_cmpl) (phba,
1223                                                              cmdiocbp, saveq);
1224                                                 spin_lock_irqsave(
1225                                                           phba->host->host_lock,
1226                                                           iflag);
1227                                         } else {
1228                                                 list_add_tail(&cmdiocbp->list,
1229                                                                 lpfc_iocb_list);
1230                                         }
1231                                 }
1232                         } else if (type == LPFC_UNKNOWN_IOCB) {
1233                                 if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1234
1235                                         char adaptermsg[LPFC_MAX_ADPTMSG];
1236
1237                                         memset(adaptermsg, 0,
1238                                                LPFC_MAX_ADPTMSG);
1239                                         memcpy(&adaptermsg[0], (uint8_t *) irsp,
1240                                                MAX_MSG_DATA);
1241                                         dev_warn(&((phba->pcidev)->dev),
1242                                                  "lpfc%d: %s",
1243                                                  phba->brd_no, adaptermsg);
1244                                 } else {
1245                                         /* Unknown IOCB command */
1246                                         lpfc_printf_log(phba,
1247                                                 KERN_ERR,
1248                                                 LOG_SLI,
1249                                                 "%d:0321 Unknown IOCB command "
1250                                                 "Data: x%x x%x x%x x%x\n",
1251                                                 phba->brd_no,
1252                                                 irsp->ulpCommand,
1253                                                 irsp->ulpStatus,
1254                                                 irsp->ulpIoTag,
1255                                                 irsp->ulpContext);
1256                                 }
1257                         }
1258
1259                         if (free_saveq) {
1260                                 if (!list_empty(&saveq->list)) {
1261                                         list_for_each_entry_safe(rspiocbp,
1262                                                                  next_iocb,
1263                                                                  &saveq->list,
1264                                                                  list) {
1265                                                 list_add_tail(&rspiocbp->list,
1266                                                               lpfc_iocb_list);
1267                                         }
1268                                 }
1269
1270                                 list_add_tail(&saveq->list, lpfc_iocb_list);
1271                         }
1272                 }
1273
1274                 /*
1275                  * If the port response put pointer has not been updated, sync
1276                  * the pgp->rspPutInx in the MAILBOX_tand fetch the new port
1277                  * response put pointer.
1278                  */
1279                 if (pring->rspidx == portRspPut) {
1280                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1281                 }
1282         } /* while (pring->rspidx != portRspPut) */
1283
1284         if ((rspiocbp != 0) && (mask & HA_R0RE_REQ)) {
1285                 /* At least one response entry has been freed */
1286                 pring->stats.iocb_rsp_full++;
1287                 /* SET RxRE_RSP in Chip Att register */
1288                 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1289                 writel(status, phba->CAregaddr);
1290                 readl(phba->CAregaddr); /* flush */
1291         }
1292         if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1293                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1294                 pring->stats.iocb_cmd_empty++;
1295
1296                 /* Force update of the local copy of cmdGetInx */
1297                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1298                 lpfc_sli_resume_iocb(phba, pring);
1299
1300                 if ((pring->lpfc_sli_cmd_available))
1301                         (pring->lpfc_sli_cmd_available) (phba, pring);
1302
1303         }
1304
1305         spin_unlock_irqrestore(phba->host->host_lock, iflag);
1306         return rc;
1307 }
1308
1309 int
1310 lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1311 {
1312         struct lpfc_iocbq *iocb, *next_iocb;
1313         IOCB_t *icmd = NULL, *cmd = NULL;
1314         int errcnt;
1315         uint16_t iotag;
1316
1317         errcnt = 0;
1318
1319         /* Error everything on txq and txcmplq
1320          * First do the txq.
1321          */
1322         spin_lock_irq(phba->host->host_lock);
1323         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
1324                 list_del_init(&iocb->list);
1325                 if (iocb->iocb_cmpl) {
1326                         icmd = &iocb->iocb;
1327                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1328                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1329                         spin_unlock_irq(phba->host->host_lock);
1330                         (iocb->iocb_cmpl) (phba, iocb, iocb);
1331                         spin_lock_irq(phba->host->host_lock);
1332                 } else {
1333                         list_add_tail(&iocb->list, &phba->lpfc_iocb_list);
1334                 }
1335         }
1336         pring->txq_cnt = 0;
1337         INIT_LIST_HEAD(&(pring->txq));
1338
1339         /* Next issue ABTS for everything on the txcmplq */
1340         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
1341                 cmd = &iocb->iocb;
1342
1343                 /*
1344                  * Imediate abort of IOCB, clear fast_lookup entry,
1345                  * if any, deque and call compl
1346                  */
1347                 iotag = cmd->ulpIoTag;
1348                 if (iotag && pring->fast_lookup &&
1349                     (iotag < pring->fast_iotag))
1350                         pring->fast_lookup[iotag] = NULL;
1351
1352                 list_del_init(&iocb->list);
1353                 pring->txcmplq_cnt--;
1354
1355                 if (iocb->iocb_cmpl) {
1356                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1357                         cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1358                         spin_unlock_irq(phba->host->host_lock);
1359                         (iocb->iocb_cmpl) (phba, iocb, iocb);
1360                         spin_lock_irq(phba->host->host_lock);
1361                 } else {
1362                         list_add_tail(&iocb->list, &phba->lpfc_iocb_list);
1363                 }
1364         }
1365
1366         INIT_LIST_HEAD(&pring->txcmplq);
1367         pring->txcmplq_cnt = 0;
1368         spin_unlock_irq(phba->host->host_lock);
1369
1370         return errcnt;
1371 }
1372
1373 /******************************************************************************
1374 * lpfc_sli_send_reset
1375 *
1376 * Note: After returning from this function, the HBA cannot be accessed for
1377 * 1 ms. Since we do not wish to delay in interrupt context, it is the
1378 * responsibility of the caller to perform the mdelay(1) and flush via readl().
1379 ******************************************************************************/
1380 static int
1381 lpfc_sli_send_reset(struct lpfc_hba * phba, uint16_t skip_post)
1382 {
1383         MAILBOX_t *swpmb;
1384         volatile uint32_t word0;
1385         void __iomem *to_slim;
1386         unsigned long flags = 0;
1387
1388         spin_lock_irqsave(phba->host->host_lock, flags);
1389
1390         /* A board reset must use REAL SLIM. */
1391         phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE;
1392
1393         word0 = 0;
1394         swpmb = (MAILBOX_t *) & word0;
1395         swpmb->mbxCommand = MBX_RESTART;
1396         swpmb->mbxHc = 1;
1397
1398         to_slim = phba->MBslimaddr;
1399         writel(*(uint32_t *) swpmb, to_slim);
1400         readl(to_slim); /* flush */
1401
1402         /* Only skip post after fc_ffinit is completed */
1403         if (skip_post) {
1404                 word0 = 1;      /* This is really setting up word1 */
1405         } else {
1406                 word0 = 0;      /* This is really setting up word1 */
1407         }
1408         to_slim = phba->MBslimaddr + sizeof (uint32_t);
1409         writel(*(uint32_t *) swpmb, to_slim);
1410         readl(to_slim); /* flush */
1411
1412         /* Turn off parity checking and serr during the physical reset */
1413         pci_read_config_word(phba->pcidev, PCI_COMMAND, &phba->pci_cfg_value);
1414         pci_write_config_word(phba->pcidev, PCI_COMMAND,
1415                               (phba->pci_cfg_value &
1416                                ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
1417
1418         writel(HC_INITFF, phba->HCregaddr);
1419
1420         phba->hba_state = LPFC_INIT_START;
1421         spin_unlock_irqrestore(phba->host->host_lock, flags);
1422
1423         return 0;
1424 }
1425
1426 static int
1427 lpfc_sli_brdreset(struct lpfc_hba * phba, uint16_t skip_post)
1428 {
1429         struct lpfc_sli_ring *pring;
1430         int i;
1431         struct lpfc_dmabuf *mp, *next_mp;
1432         unsigned long flags = 0;
1433
1434         lpfc_sli_send_reset(phba, skip_post);
1435         mdelay(1);
1436
1437         spin_lock_irqsave(phba->host->host_lock, flags);
1438         /* Risk the write on flush case ie no delay after the readl */
1439         readl(phba->HCregaddr); /* flush */
1440         /* Now toggle INITFF bit set by lpfc_sli_send_reset */
1441         writel(0, phba->HCregaddr);
1442         readl(phba->HCregaddr); /* flush */
1443
1444         /* Restore PCI cmd register */
1445         pci_write_config_word(phba->pcidev, PCI_COMMAND, phba->pci_cfg_value);
1446
1447         /* perform board reset */
1448         phba->fc_eventTag = 0;
1449         phba->fc_myDID = 0;
1450         phba->fc_prevDID = Mask_DID;
1451
1452         /* Reset HBA */
1453         lpfc_printf_log(phba,
1454                 KERN_INFO,
1455                 LOG_SLI,
1456                 "%d:0325 Reset HBA Data: x%x x%x x%x\n",
1457                 phba->brd_no,
1458                 phba->hba_state,
1459                 phba->sli.sli_flag,
1460                 skip_post);
1461
1462         /* Initialize relevant SLI info */
1463         for (i = 0; i < phba->sli.num_rings; i++) {
1464                 pring = &phba->sli.ring[i];
1465                 pring->flag = 0;
1466                 pring->rspidx = 0;
1467                 pring->next_cmdidx  = 0;
1468                 pring->local_getidx = 0;
1469                 pring->cmdidx = 0;
1470                 pring->missbufcnt = 0;
1471         }
1472         spin_unlock_irqrestore(phba->host->host_lock, flags);
1473
1474         if (skip_post) {
1475                 mdelay(100);
1476         } else {
1477                 mdelay(2000);
1478         }
1479
1480         spin_lock_irqsave(phba->host->host_lock, flags);
1481         /* Cleanup preposted buffers on the ELS ring */
1482         pring = &phba->sli.ring[LPFC_ELS_RING];
1483         list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
1484                 list_del(&mp->list);
1485                 pring->postbufq_cnt--;
1486                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1487                 kfree(mp);
1488         }
1489         spin_unlock_irqrestore(phba->host->host_lock, flags);
1490
1491         for (i = 0; i < phba->sli.num_rings; i++)
1492                 lpfc_sli_abort_iocb_ring(phba, &phba->sli.ring[i]);
1493
1494         return 0;
1495 }
1496
1497 static int
1498 lpfc_sli_chipset_init(struct lpfc_hba *phba)
1499 {
1500         uint32_t status, i = 0;
1501
1502         /* Read the HBA Host Status Register */
1503         status = readl(phba->HSregaddr);
1504
1505         /* Check status register to see what current state is */
1506         i = 0;
1507         while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) {
1508
1509                 /* Check every 100ms for 5 retries, then every 500ms for 5, then
1510                  * every 2.5 sec for 5, then reset board and every 2.5 sec for
1511                  * 4.
1512                  */
1513                 if (i++ >= 20) {
1514                         /* Adapter failed to init, timeout, status reg
1515                            <status> */
1516                         lpfc_printf_log(phba,
1517                                         KERN_ERR,
1518                                         LOG_INIT,
1519                                         "%d:0436 Adapter failed to init, "
1520                                         "timeout, status reg x%x\n",
1521                                         phba->brd_no,
1522                                         status);
1523                         phba->hba_state = LPFC_HBA_ERROR;
1524                         return -ETIMEDOUT;
1525                 }
1526
1527                 /* Check to see if any errors occurred during init */
1528                 if (status & HS_FFERM) {
1529                         /* ERROR: During chipset initialization */
1530                         /* Adapter failed to init, chipset, status reg
1531                            <status> */
1532                         lpfc_printf_log(phba,
1533                                         KERN_ERR,
1534                                         LOG_INIT,
1535                                         "%d:0437 Adapter failed to init, "
1536                                         "chipset, status reg x%x\n",
1537                                         phba->brd_no,
1538                                         status);
1539                         phba->hba_state = LPFC_HBA_ERROR;
1540                         return -EIO;
1541                 }
1542
1543                 if (i <= 5) {
1544                         msleep(10);
1545                 } else if (i <= 10) {
1546                         msleep(500);
1547                 } else {
1548                         msleep(2500);
1549                 }
1550
1551                 if (i == 15) {
1552                         lpfc_sli_brdreset(phba, 0);
1553                 }
1554                 /* Read the HBA Host Status Register */
1555                 status = readl(phba->HSregaddr);
1556         }
1557
1558         /* Check to see if any errors occurred during init */
1559         if (status & HS_FFERM) {
1560                 /* ERROR: During chipset initialization */
1561                 /* Adapter failed to init, chipset, status reg <status> */
1562                 lpfc_printf_log(phba,
1563                                 KERN_ERR,
1564                                 LOG_INIT,
1565                                 "%d:0438 Adapter failed to init, chipset, "
1566                                 "status reg x%x\n",
1567                                 phba->brd_no,
1568                                 status);
1569                 phba->hba_state = LPFC_HBA_ERROR;
1570                 return -EIO;
1571         }
1572
1573         /* Clear all interrupt enable conditions */
1574         writel(0, phba->HCregaddr);
1575         readl(phba->HCregaddr); /* flush */
1576
1577         /* setup host attn register */
1578         writel(0xffffffff, phba->HAregaddr);
1579         readl(phba->HAregaddr); /* flush */
1580         return 0;
1581 }
1582
1583 int
1584 lpfc_sli_hba_setup(struct lpfc_hba * phba)
1585 {
1586         LPFC_MBOXQ_t *pmb;
1587         uint32_t resetcount = 0, rc = 0, done = 0;
1588
1589         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1590         if (!pmb) {
1591                 phba->hba_state = LPFC_HBA_ERROR;
1592                 return -ENOMEM;
1593         }
1594
1595         while (resetcount < 2 && !done) {
1596                 phba->hba_state = 0;
1597                 lpfc_sli_brdreset(phba, 0);
1598                 msleep(2500);
1599                 rc = lpfc_sli_chipset_init(phba);
1600                 if (rc)
1601                         break;
1602
1603                 resetcount++;
1604
1605         /* Call pre CONFIG_PORT mailbox command initialization.  A value of 0
1606          * means the call was successful.  Any other nonzero value is a failure,
1607          * but if ERESTART is returned, the driver may reset the HBA and try
1608          * again.
1609          */
1610                 rc = lpfc_config_port_prep(phba);
1611                 if (rc == -ERESTART) {
1612                         phba->hba_state = 0;
1613                         continue;
1614                 } else if (rc) {
1615                         break;
1616                 }
1617
1618                 phba->hba_state = LPFC_INIT_MBX_CMDS;
1619                 lpfc_config_port(phba, pmb);
1620                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
1621                 if (rc == MBX_SUCCESS)
1622                         done = 1;
1623                 else {
1624                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1625                                 "%d:0442 Adapter failed to init, mbxCmd x%x "
1626                                 "CONFIG_PORT, mbxStatus x%x Data: x%x\n",
1627                                 phba->brd_no, pmb->mb.mbxCommand,
1628                                 pmb->mb.mbxStatus, 0);
1629                         phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE;
1630                 }
1631         }
1632         if (!done)
1633                 goto lpfc_sli_hba_setup_error;
1634
1635         rc = lpfc_sli_ring_map(phba, pmb);
1636
1637         if (rc)
1638                 goto lpfc_sli_hba_setup_error;
1639
1640         phba->sli.sli_flag |= LPFC_PROCESS_LA;
1641
1642         rc = lpfc_config_port_post(phba);
1643         if (rc)
1644                 goto lpfc_sli_hba_setup_error;
1645
1646         goto lpfc_sli_hba_setup_exit;
1647 lpfc_sli_hba_setup_error:
1648         phba->hba_state = LPFC_HBA_ERROR;
1649 lpfc_sli_hba_setup_exit:
1650         mempool_free(pmb, phba->mbox_mem_pool);
1651         return rc;
1652 }
1653
1654 static void
1655 lpfc_mbox_abort(struct lpfc_hba * phba)
1656 {
1657         LPFC_MBOXQ_t *pmbox;
1658         MAILBOX_t *mb;
1659
1660         if (phba->sli.mbox_active) {
1661                 del_timer_sync(&phba->sli.mbox_tmo);
1662                 phba->work_hba_events &= ~WORKER_MBOX_TMO;
1663                 pmbox = phba->sli.mbox_active;
1664                 mb = &pmbox->mb;
1665                 phba->sli.mbox_active = NULL;
1666                 if (pmbox->mbox_cmpl) {
1667                         mb->mbxStatus = MBX_NOT_FINISHED;
1668                         (pmbox->mbox_cmpl) (phba, pmbox);
1669                 }
1670                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1671         }
1672
1673         /* Abort all the non active mailbox commands. */
1674         spin_lock_irq(phba->host->host_lock);
1675         pmbox = lpfc_mbox_get(phba);
1676         while (pmbox) {
1677                 mb = &pmbox->mb;
1678                 if (pmbox->mbox_cmpl) {
1679                         mb->mbxStatus = MBX_NOT_FINISHED;
1680                         spin_unlock_irq(phba->host->host_lock);
1681                         (pmbox->mbox_cmpl) (phba, pmbox);
1682                         spin_lock_irq(phba->host->host_lock);
1683                 }
1684                 pmbox = lpfc_mbox_get(phba);
1685         }
1686         spin_unlock_irq(phba->host->host_lock);
1687         return;
1688 }
1689
1690 /*! lpfc_mbox_timeout
1691  *
1692  * \pre
1693  * \post
1694  * \param hba Pointer to per struct lpfc_hba structure
1695  * \param l1  Pointer to the driver's mailbox queue.
1696  * \return
1697  *   void
1698  *
1699  * \b Description:
1700  *
1701  * This routine handles mailbox timeout events at timer interrupt context.
1702  */
1703 void
1704 lpfc_mbox_timeout(unsigned long ptr)
1705 {
1706         struct lpfc_hba *phba;
1707         unsigned long iflag;
1708
1709         phba = (struct lpfc_hba *)ptr;
1710         spin_lock_irqsave(phba->host->host_lock, iflag);
1711         if (!(phba->work_hba_events & WORKER_MBOX_TMO)) {
1712                 phba->work_hba_events |= WORKER_MBOX_TMO;
1713                 if (phba->work_wait)
1714                         wake_up(phba->work_wait);
1715         }
1716         spin_unlock_irqrestore(phba->host->host_lock, iflag);
1717 }
1718
1719 void
1720 lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
1721 {
1722         LPFC_MBOXQ_t *pmbox;
1723         MAILBOX_t *mb;
1724
1725         spin_lock_irq(phba->host->host_lock);
1726         if (!(phba->work_hba_events & WORKER_MBOX_TMO)) {
1727                 spin_unlock_irq(phba->host->host_lock);
1728                 return;
1729         }
1730
1731         phba->work_hba_events &= ~WORKER_MBOX_TMO;
1732
1733         pmbox = phba->sli.mbox_active;
1734         mb = &pmbox->mb;
1735
1736         /* Mbox cmd <mbxCommand> timeout */
1737         lpfc_printf_log(phba,
1738                 KERN_ERR,
1739                 LOG_MBOX | LOG_SLI,
1740                 "%d:0310 Mailbox command x%x timeout Data: x%x x%x x%p\n",
1741                 phba->brd_no,
1742                 mb->mbxCommand,
1743                 phba->hba_state,
1744                 phba->sli.sli_flag,
1745                 phba->sli.mbox_active);
1746
1747         phba->sli.mbox_active = NULL;
1748         if (pmbox->mbox_cmpl) {
1749                 mb->mbxStatus = MBX_NOT_FINISHED;
1750                 spin_unlock_irq(phba->host->host_lock);
1751                 (pmbox->mbox_cmpl) (phba, pmbox);
1752                 spin_lock_irq(phba->host->host_lock);
1753         }
1754         phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1755
1756         spin_unlock_irq(phba->host->host_lock);
1757         lpfc_mbox_abort(phba);
1758         return;
1759 }
1760
1761 int
1762 lpfc_sli_issue_mbox(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmbox, uint32_t flag)
1763 {
1764         MAILBOX_t *mb;
1765         struct lpfc_sli *psli;
1766         uint32_t status, evtctr;
1767         uint32_t ha_copy;
1768         int i;
1769         unsigned long drvr_flag = 0;
1770         volatile uint32_t word0, ldata;
1771         void __iomem *to_slim;
1772
1773         psli = &phba->sli;
1774
1775         spin_lock_irqsave(phba->host->host_lock, drvr_flag);
1776
1777
1778         mb = &pmbox->mb;
1779         status = MBX_SUCCESS;
1780
1781         if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
1782                 /* Polling for a mbox command when another one is already active
1783                  * is not allowed in SLI. Also, the driver must have established
1784                  * SLI2 mode to queue and process multiple mbox commands.
1785                  */
1786
1787                 if (flag & MBX_POLL) {
1788                         spin_unlock_irqrestore(phba->host->host_lock,
1789                                                drvr_flag);
1790
1791                         /* Mbox command <mbxCommand> cannot issue */
1792                         LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
1793                         return (MBX_NOT_FINISHED);
1794                 }
1795
1796                 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) {
1797                         spin_unlock_irqrestore(phba->host->host_lock,
1798                                                drvr_flag);
1799                         /* Mbox command <mbxCommand> cannot issue */
1800                         LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
1801                         return (MBX_NOT_FINISHED);
1802                 }
1803
1804                 /* Handle STOP IOCB processing flag. This is only meaningful
1805                  * if we are not polling for mbox completion.
1806                  */
1807                 if (flag & MBX_STOP_IOCB) {
1808                         flag &= ~MBX_STOP_IOCB;
1809                         /* Now flag each ring */
1810                         for (i = 0; i < psli->num_rings; i++) {
1811                                 /* If the ring is active, flag it */
1812                                 if (psli->ring[i].cmdringaddr) {
1813                                         psli->ring[i].flag |=
1814                                             LPFC_STOP_IOCB_MBX;
1815                                 }
1816                         }
1817                 }
1818
1819                 /* Another mailbox command is still being processed, queue this
1820                  * command to be processed later.
1821                  */
1822                 lpfc_mbox_put(phba, pmbox);
1823
1824                 /* Mbox cmd issue - BUSY */
1825                 lpfc_printf_log(phba,
1826                         KERN_INFO,
1827                         LOG_MBOX | LOG_SLI,
1828                         "%d:0308 Mbox cmd issue - BUSY Data: x%x x%x x%x x%x\n",
1829                         phba->brd_no,
1830                         mb->mbxCommand,
1831                         phba->hba_state,
1832                         psli->sli_flag,
1833                         flag);
1834
1835                 psli->slistat.mbox_busy++;
1836                 spin_unlock_irqrestore(phba->host->host_lock,
1837                                        drvr_flag);
1838
1839                 return (MBX_BUSY);
1840         }
1841
1842         /* Handle STOP IOCB processing flag. This is only meaningful
1843          * if we are not polling for mbox completion.
1844          */
1845         if (flag & MBX_STOP_IOCB) {
1846                 flag &= ~MBX_STOP_IOCB;
1847                 if (flag == MBX_NOWAIT) {
1848                         /* Now flag each ring */
1849                         for (i = 0; i < psli->num_rings; i++) {
1850                                 /* If the ring is active, flag it */
1851                                 if (psli->ring[i].cmdringaddr) {
1852                                         psli->ring[i].flag |=
1853                                             LPFC_STOP_IOCB_MBX;
1854                                 }
1855                         }
1856                 }
1857         }
1858
1859         psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
1860
1861         /* If we are not polling, we MUST be in SLI2 mode */
1862         if (flag != MBX_POLL) {
1863                 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) {
1864                         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1865                         spin_unlock_irqrestore(phba->host->host_lock,
1866                                                drvr_flag);
1867                         /* Mbox command <mbxCommand> cannot issue */
1868                         LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag);
1869                         return (MBX_NOT_FINISHED);
1870                 }
1871                 /* timeout active mbox command */
1872                 mod_timer(&psli->mbox_tmo, jiffies + HZ * LPFC_MBOX_TMO);
1873         }
1874
1875         /* Mailbox cmd <cmd> issue */
1876         lpfc_printf_log(phba,
1877                 KERN_INFO,
1878                 LOG_MBOX | LOG_SLI,
1879                 "%d:0309 Mailbox cmd x%x issue Data: x%x x%x x%x\n",
1880                 phba->brd_no,
1881                 mb->mbxCommand,
1882                 phba->hba_state,
1883                 psli->sli_flag,
1884                 flag);
1885
1886         psli->slistat.mbox_cmd++;
1887         evtctr = psli->slistat.mbox_event;
1888
1889         /* next set own bit for the adapter and copy over command word */
1890         mb->mbxOwner = OWN_CHIP;
1891
1892         if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
1893                 /* First copy command data to host SLIM area */
1894                 lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx, MAILBOX_CMD_SIZE);
1895         } else {
1896                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
1897                         /* copy command data into host mbox for cmpl */
1898                         lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx,
1899                                         MAILBOX_CMD_SIZE);
1900                 }
1901
1902                 /* First copy mbox command data to HBA SLIM, skip past first
1903                    word */
1904                 to_slim = phba->MBslimaddr + sizeof (uint32_t);
1905                 lpfc_memcpy_to_slim(to_slim, &mb->un.varWords[0],
1906                             MAILBOX_CMD_SIZE - sizeof (uint32_t));
1907
1908                 /* Next copy over first word, with mbxOwner set */
1909                 ldata = *((volatile uint32_t *)mb);
1910                 to_slim = phba->MBslimaddr;
1911                 writel(ldata, to_slim);
1912                 readl(to_slim); /* flush */
1913
1914                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
1915                         /* switch over to host mailbox */
1916                         psli->sli_flag |= LPFC_SLI2_ACTIVE;
1917                 }
1918         }
1919
1920         wmb();
1921         /* interrupt board to doit right away */
1922         writel(CA_MBATT, phba->CAregaddr);
1923         readl(phba->CAregaddr); /* flush */
1924
1925         switch (flag) {
1926         case MBX_NOWAIT:
1927                 /* Don't wait for it to finish, just return */
1928                 psli->mbox_active = pmbox;
1929                 break;
1930
1931         case MBX_POLL:
1932                 i = 0;
1933                 psli->mbox_active = NULL;
1934                 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
1935                         /* First read mbox status word */
1936                         word0 = *((volatile uint32_t *)&phba->slim2p->mbx);
1937                         word0 = le32_to_cpu(word0);
1938                 } else {
1939                         /* First read mbox status word */
1940                         word0 = readl(phba->MBslimaddr);
1941                 }
1942
1943                 /* Read the HBA Host Attention Register */
1944                 ha_copy = readl(phba->HAregaddr);
1945
1946                 /* Wait for command to complete */
1947                 while (((word0 & OWN_CHIP) == OWN_CHIP)
1948                        || !(ha_copy & HA_MBATT)) {
1949                         if (i++ >= 100) {
1950                                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1951                                 spin_unlock_irqrestore(phba->host->host_lock,
1952                                                        drvr_flag);
1953                                 return (MBX_NOT_FINISHED);
1954                         }
1955
1956                         /* Check if we took a mbox interrupt while we were
1957                            polling */
1958                         if (((word0 & OWN_CHIP) != OWN_CHIP)
1959                             && (evtctr != psli->slistat.mbox_event))
1960                                 break;
1961
1962                         spin_unlock_irqrestore(phba->host->host_lock,
1963                                                drvr_flag);
1964
1965                         /* Can be in interrupt context, do not sleep */
1966                         /* (or might be called with interrupts disabled) */
1967                         mdelay(i);
1968
1969                         spin_lock_irqsave(phba->host->host_lock, drvr_flag);
1970
1971                         if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
1972                                 /* First copy command data */
1973                                 word0 = *((volatile uint32_t *)
1974                                                 &phba->slim2p->mbx);
1975                                 word0 = le32_to_cpu(word0);
1976                                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
1977                                         MAILBOX_t *slimmb;
1978                                         volatile uint32_t slimword0;
1979                                         /* Check real SLIM for any errors */
1980                                         slimword0 = readl(phba->MBslimaddr);
1981                                         slimmb = (MAILBOX_t *) & slimword0;
1982                                         if (((slimword0 & OWN_CHIP) != OWN_CHIP)
1983                                             && slimmb->mbxStatus) {
1984                                                 psli->sli_flag &=
1985                                                     ~LPFC_SLI2_ACTIVE;
1986                                                 word0 = slimword0;
1987                                         }
1988                                 }
1989                         } else {
1990                                 /* First copy command data */
1991                                 word0 = readl(phba->MBslimaddr);
1992                         }
1993                         /* Read the HBA Host Attention Register */
1994                         ha_copy = readl(phba->HAregaddr);
1995                 }
1996
1997                 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
1998                         /* copy results back to user */
1999                         lpfc_sli_pcimem_bcopy(&phba->slim2p->mbx, mb,
2000                                         MAILBOX_CMD_SIZE);
2001                 } else {
2002                         /* First copy command data */
2003                         lpfc_memcpy_from_slim(mb, phba->MBslimaddr,
2004                                                         MAILBOX_CMD_SIZE);
2005                         if ((mb->mbxCommand == MBX_DUMP_MEMORY) &&
2006                                 pmbox->context2) {
2007                                 lpfc_memcpy_from_slim((void *)pmbox->context2,
2008                                       phba->MBslimaddr + DMP_RSP_OFFSET,
2009                                                       mb->un.varDmp.word_cnt);
2010                         }
2011                 }
2012
2013                 writel(HA_MBATT, phba->HAregaddr);
2014                 readl(phba->HAregaddr); /* flush */
2015
2016                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2017                 status = mb->mbxStatus;
2018         }
2019
2020         spin_unlock_irqrestore(phba->host->host_lock, drvr_flag);
2021         return (status);
2022 }
2023
2024 static int
2025 lpfc_sli_ringtx_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
2026                     struct lpfc_iocbq * piocb)
2027 {
2028         /* Insert the caller's iocb in the txq tail for later processing. */
2029         list_add_tail(&piocb->list, &pring->txq);
2030         pring->txq_cnt++;
2031         return (0);
2032 }
2033
2034 static struct lpfc_iocbq *
2035 lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2036                    struct lpfc_iocbq ** piocb)
2037 {
2038         struct lpfc_iocbq * nextiocb;
2039
2040         nextiocb = lpfc_sli_ringtx_get(phba, pring);
2041         if (!nextiocb) {
2042                 nextiocb = *piocb;
2043                 *piocb = NULL;
2044         }
2045
2046         return nextiocb;
2047 }
2048
2049 int
2050 lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2051                     struct lpfc_iocbq *piocb, uint32_t flag)
2052 {
2053         struct lpfc_iocbq *nextiocb;
2054         IOCB_t *iocb;
2055
2056         /*
2057          * We should never get an IOCB if we are in a < LINK_DOWN state
2058          */
2059         if (unlikely(phba->hba_state < LPFC_LINK_DOWN))
2060                 return IOCB_ERROR;
2061
2062         /*
2063          * Check to see if we are blocking IOCB processing because of a
2064          * outstanding mbox command.
2065          */
2066         if (unlikely(pring->flag & LPFC_STOP_IOCB_MBX))
2067                 goto iocb_busy;
2068
2069         if (unlikely(phba->hba_state == LPFC_LINK_DOWN)) {
2070                 /*
2071                  * Only CREATE_XRI, CLOSE_XRI, ABORT_XRI, and QUE_RING_BUF
2072                  * can be issued if the link is not up.
2073                  */
2074                 switch (piocb->iocb.ulpCommand) {
2075                 case CMD_QUE_RING_BUF_CN:
2076                 case CMD_QUE_RING_BUF64_CN:
2077                         /*
2078                          * For IOCBs, like QUE_RING_BUF, that have no rsp ring
2079                          * completion, iocb_cmpl MUST be 0.
2080                          */
2081                         if (piocb->iocb_cmpl)
2082                                 piocb->iocb_cmpl = NULL;
2083                         /*FALLTHROUGH*/
2084                 case CMD_CREATE_XRI_CR:
2085                         break;
2086                 default:
2087                         goto iocb_busy;
2088                 }
2089
2090         /*
2091          * For FCP commands, we must be in a state where we can process link
2092          * attention events.
2093          */
2094         } else if (unlikely(pring->ringno == phba->sli.fcp_ring &&
2095                    !(phba->sli.sli_flag & LPFC_PROCESS_LA)))
2096                 goto iocb_busy;
2097
2098         /*
2099          * Check to see if this is a high priority command.
2100          * If so bypass tx queue processing.
2101          */
2102         if (unlikely((flag & SLI_IOCB_HIGH_PRIORITY) &&
2103                      (iocb = lpfc_sli_next_iocb_slot(phba, pring)))) {
2104                 lpfc_sli_submit_iocb(phba, pring, iocb, piocb);
2105                 piocb = NULL;
2106         }
2107
2108         while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
2109                (nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb)))
2110                 lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
2111
2112         if (iocb)
2113                 lpfc_sli_update_ring(phba, pring);
2114         else
2115                 lpfc_sli_update_full_ring(phba, pring);
2116
2117         if (!piocb)
2118                 return IOCB_SUCCESS;
2119
2120         goto out_busy;
2121
2122  iocb_busy:
2123         pring->stats.iocb_cmd_delay++;
2124
2125  out_busy:
2126
2127         if (!(flag & SLI_IOCB_RET_IOCB)) {
2128                 lpfc_sli_ringtx_put(phba, pring, piocb);
2129                 return IOCB_SUCCESS;
2130         }
2131
2132         return IOCB_BUSY;
2133 }
2134
2135 int
2136 lpfc_sli_setup(struct lpfc_hba *phba)
2137 {
2138         int i, totiocb = 0;
2139         struct lpfc_sli *psli = &phba->sli;
2140         struct lpfc_sli_ring *pring;
2141
2142         psli->num_rings = MAX_CONFIGURED_RINGS;
2143         psli->sli_flag = 0;
2144         psli->fcp_ring = LPFC_FCP_RING;
2145         psli->next_ring = LPFC_FCP_NEXT_RING;
2146         psli->ip_ring = LPFC_IP_RING;
2147
2148         for (i = 0; i < psli->num_rings; i++) {
2149                 pring = &psli->ring[i];
2150                 switch (i) {
2151                 case LPFC_FCP_RING:     /* ring 0 - FCP */
2152                         /* numCiocb and numRiocb are used in config_port */
2153                         pring->numCiocb = SLI2_IOCB_CMD_R0_ENTRIES;
2154                         pring->numRiocb = SLI2_IOCB_RSP_R0_ENTRIES;
2155                         pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
2156                         pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
2157                         pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
2158                         pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
2159                         pring->iotag_ctr = 0;
2160                         pring->iotag_max =
2161                             (phba->cfg_hba_queue_depth * 2);
2162                         pring->fast_iotag = pring->iotag_max;
2163                         pring->num_mask = 0;
2164                         break;
2165                 case LPFC_IP_RING:      /* ring 1 - IP */
2166                         /* numCiocb and numRiocb are used in config_port */
2167                         pring->numCiocb = SLI2_IOCB_CMD_R1_ENTRIES;
2168                         pring->numRiocb = SLI2_IOCB_RSP_R1_ENTRIES;
2169                         pring->num_mask = 0;
2170                         break;
2171                 case LPFC_ELS_RING:     /* ring 2 - ELS / CT */
2172                         /* numCiocb and numRiocb are used in config_port */
2173                         pring->numCiocb = SLI2_IOCB_CMD_R2_ENTRIES;
2174                         pring->numRiocb = SLI2_IOCB_RSP_R2_ENTRIES;
2175                         pring->fast_iotag = 0;
2176                         pring->iotag_ctr = 0;
2177                         pring->iotag_max = 4096;
2178                         pring->num_mask = 4;
2179                         pring->prt[0].profile = 0;      /* Mask 0 */
2180                         pring->prt[0].rctl = FC_ELS_REQ;
2181                         pring->prt[0].type = FC_ELS_DATA;
2182                         pring->prt[0].lpfc_sli_rcv_unsol_event =
2183                             lpfc_els_unsol_event;
2184                         pring->prt[1].profile = 0;      /* Mask 1 */
2185                         pring->prt[1].rctl = FC_ELS_RSP;
2186                         pring->prt[1].type = FC_ELS_DATA;
2187                         pring->prt[1].lpfc_sli_rcv_unsol_event =
2188                             lpfc_els_unsol_event;
2189                         pring->prt[2].profile = 0;      /* Mask 2 */
2190                         /* NameServer Inquiry */
2191                         pring->prt[2].rctl = FC_UNSOL_CTL;
2192                         /* NameServer */
2193                         pring->prt[2].type = FC_COMMON_TRANSPORT_ULP;
2194                         pring->prt[2].lpfc_sli_rcv_unsol_event =
2195                             lpfc_ct_unsol_event;
2196                         pring->prt[3].profile = 0;      /* Mask 3 */
2197                         /* NameServer response */
2198                         pring->prt[3].rctl = FC_SOL_CTL;
2199                         /* NameServer */
2200                         pring->prt[3].type = FC_COMMON_TRANSPORT_ULP;
2201                         pring->prt[3].lpfc_sli_rcv_unsol_event =
2202                             lpfc_ct_unsol_event;
2203                         break;
2204                 }
2205                 totiocb += (pring->numCiocb + pring->numRiocb);
2206         }
2207         if (totiocb > MAX_SLI2_IOCB) {
2208                 /* Too many cmd / rsp ring entries in SLI2 SLIM */
2209                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2210                                 "%d:0462 Too many cmd / rsp ring entries in "
2211                                 "SLI2 SLIM Data: x%x x%x\n",
2212                                 phba->brd_no, totiocb, MAX_SLI2_IOCB);
2213         }
2214
2215         return 0;
2216 }
2217
2218 int
2219 lpfc_sli_queue_setup(struct lpfc_hba * phba)
2220 {
2221         struct lpfc_sli *psli;
2222         struct lpfc_sli_ring *pring;
2223         int i, cnt;
2224
2225         psli = &phba->sli;
2226         spin_lock_irq(phba->host->host_lock);
2227         INIT_LIST_HEAD(&psli->mboxq);
2228         /* Initialize list headers for txq and txcmplq as double linked lists */
2229         for (i = 0; i < psli->num_rings; i++) {
2230                 pring = &psli->ring[i];
2231                 pring->ringno = i;
2232                 pring->next_cmdidx  = 0;
2233                 pring->local_getidx = 0;
2234                 pring->cmdidx = 0;
2235                 INIT_LIST_HEAD(&pring->txq);
2236                 INIT_LIST_HEAD(&pring->txcmplq);
2237                 INIT_LIST_HEAD(&pring->iocb_continueq);
2238                 INIT_LIST_HEAD(&pring->postbufq);
2239                 cnt = pring->fast_iotag;
2240                 spin_unlock_irq(phba->host->host_lock);
2241                 if (cnt) {
2242                         pring->fast_lookup =
2243                                 kmalloc(cnt * sizeof (struct lpfc_iocbq *),
2244                                         GFP_KERNEL);
2245                         if (pring->fast_lookup == 0) {
2246                                 return (0);
2247                         }
2248                         memset((char *)pring->fast_lookup, 0,
2249                                cnt * sizeof (struct lpfc_iocbq *));
2250                 }
2251                 spin_lock_irq(phba->host->host_lock);
2252         }
2253         spin_unlock_irq(phba->host->host_lock);
2254         return (1);
2255 }
2256
2257 int
2258 lpfc_sli_hba_down(struct lpfc_hba * phba)
2259 {
2260         struct lpfc_sli *psli;
2261         struct lpfc_sli_ring *pring;
2262         LPFC_MBOXQ_t *pmb;
2263         struct lpfc_iocbq *iocb, *next_iocb;
2264         IOCB_t *icmd = NULL;
2265         int i;
2266         unsigned long flags = 0;
2267
2268         psli = &phba->sli;
2269         lpfc_hba_down_prep(phba);
2270
2271         spin_lock_irqsave(phba->host->host_lock, flags);
2272
2273         for (i = 0; i < psli->num_rings; i++) {
2274                 pring = &psli->ring[i];
2275                 pring->flag |= LPFC_DEFERRED_RING_EVENT;
2276
2277                 /*
2278                  * Error everything on the txq since these iocbs have not been
2279                  * given to the FW yet.
2280                  */
2281                 pring->txq_cnt = 0;
2282
2283                 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2284                         list_del_init(&iocb->list);
2285                         if (iocb->iocb_cmpl) {
2286                                 icmd = &iocb->iocb;
2287                                 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2288                                 icmd->un.ulpWord[4] = IOERR_SLI_DOWN;
2289                                 spin_unlock_irqrestore(phba->host->host_lock,
2290                                                        flags);
2291                                 (iocb->iocb_cmpl) (phba, iocb, iocb);
2292                                 spin_lock_irqsave(phba->host->host_lock, flags);
2293                         } else {
2294                                 list_add_tail(&iocb->list,
2295                                               &phba->lpfc_iocb_list);
2296                         }
2297                 }
2298
2299                 INIT_LIST_HEAD(&(pring->txq));
2300
2301                 if (pring->fast_lookup) {
2302                         kfree(pring->fast_lookup);
2303                         pring->fast_lookup = NULL;
2304                 }
2305
2306         }
2307
2308         spin_unlock_irqrestore(phba->host->host_lock, flags);
2309
2310         /* Return any active mbox cmds */
2311         del_timer_sync(&psli->mbox_tmo);
2312         spin_lock_irqsave(phba->host->host_lock, flags);
2313         phba->work_hba_events &= ~WORKER_MBOX_TMO;
2314         if (psli->mbox_active) {
2315                 pmb = psli->mbox_active;
2316                 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
2317                 if (pmb->mbox_cmpl) {
2318                         spin_unlock_irqrestore(phba->host->host_lock, flags);
2319                         pmb->mbox_cmpl(phba,pmb);
2320                         spin_lock_irqsave(phba->host->host_lock, flags);
2321                 }
2322         }
2323         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2324         psli->mbox_active = NULL;
2325
2326         /* Return any pending mbox cmds */
2327         while ((pmb = lpfc_mbox_get(phba)) != NULL) {
2328                 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
2329                 if (pmb->mbox_cmpl) {
2330                         spin_unlock_irqrestore(phba->host->host_lock, flags);
2331                         pmb->mbox_cmpl(phba,pmb);
2332                         spin_lock_irqsave(phba->host->host_lock, flags);
2333                 }
2334         }
2335
2336         INIT_LIST_HEAD(&psli->mboxq);
2337
2338         spin_unlock_irqrestore(phba->host->host_lock, flags);
2339
2340         /*
2341          * Provided the hba is not in an error state, reset it.  It is not
2342          * capable of IO anymore.
2343          */
2344         if (phba->hba_state != LPFC_HBA_ERROR) {
2345                 phba->hba_state = LPFC_INIT_START;
2346                 lpfc_sli_brdreset(phba, 1);
2347         }
2348
2349         return 1;
2350 }
2351
2352 void
2353 lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt)
2354 {
2355         uint32_t *src = srcp;
2356         uint32_t *dest = destp;
2357         uint32_t ldata;
2358         int i;
2359
2360         for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) {
2361                 ldata = *src;
2362                 ldata = le32_to_cpu(ldata);
2363                 *dest = ldata;
2364                 src++;
2365                 dest++;
2366         }
2367 }
2368
2369 int
2370 lpfc_sli_ringpostbuf_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
2371                          struct lpfc_dmabuf * mp)
2372 {
2373         /* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up
2374            later */
2375         list_add_tail(&mp->list, &pring->postbufq);
2376
2377         pring->postbufq_cnt++;
2378         return 0;
2379 }
2380
2381
2382 struct lpfc_dmabuf *
2383 lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2384                          dma_addr_t phys)
2385 {
2386         struct lpfc_dmabuf *mp, *next_mp;
2387         struct list_head *slp = &pring->postbufq;
2388
2389         /* Search postbufq, from the begining, looking for a match on phys */
2390         list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
2391                 if (mp->phys == phys) {
2392                         list_del_init(&mp->list);
2393                         pring->postbufq_cnt--;
2394                         return mp;
2395                 }
2396         }
2397
2398         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2399                         "%d:0410 Cannot find virtual addr for mapped buf on "
2400                         "ring %d Data x%llx x%p x%p x%x\n",
2401                         phba->brd_no, pring->ringno, (unsigned long long)phys,
2402                         slp->next, slp->prev, pring->postbufq_cnt);
2403         return NULL;
2404 }
2405
2406 static void
2407 lpfc_sli_abort_elsreq_cmpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
2408                            struct lpfc_iocbq * rspiocb)
2409 {
2410         struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
2411         /* Free the resources associated with the ELS_REQUEST64 IOCB the driver
2412          * just aborted.
2413          * In this case, context2  = cmd,  context2->next = rsp, context3 = bpl
2414          */
2415         if (cmdiocb->context2) {
2416                 buf_ptr1 = (struct lpfc_dmabuf *) cmdiocb->context2;
2417
2418                 /* Free the response IOCB before completing the abort
2419                    command.  */
2420                 buf_ptr = NULL;
2421                 list_remove_head((&buf_ptr1->list), buf_ptr,
2422                                  struct lpfc_dmabuf, list);
2423                 if (buf_ptr) {
2424                         lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
2425                         kfree(buf_ptr);
2426                 }
2427                 lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
2428                 kfree(buf_ptr1);
2429         }
2430
2431         if (cmdiocb->context3) {
2432                 buf_ptr = (struct lpfc_dmabuf *) cmdiocb->context3;
2433                 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
2434                 kfree(buf_ptr);
2435         }
2436
2437         list_add_tail(&cmdiocb->list, &phba->lpfc_iocb_list);
2438         return;
2439 }
2440
2441 int
2442 lpfc_sli_issue_abort_iotag32(struct lpfc_hba * phba,
2443                              struct lpfc_sli_ring * pring,
2444                              struct lpfc_iocbq * cmdiocb)
2445 {
2446         struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
2447         struct lpfc_iocbq *abtsiocbp = NULL;
2448         IOCB_t *icmd = NULL;
2449         IOCB_t *iabt = NULL;
2450
2451         /* issue ABTS for this IOCB based on iotag */
2452         list_remove_head(lpfc_iocb_list, abtsiocbp, struct lpfc_iocbq, list);
2453         if (abtsiocbp == NULL)
2454                 return 0;
2455         memset(abtsiocbp, 0, sizeof (struct lpfc_iocbq));
2456
2457         iabt = &abtsiocbp->iocb;
2458         icmd = &cmdiocb->iocb;
2459         switch (icmd->ulpCommand) {
2460         case CMD_ELS_REQUEST64_CR:
2461                 /* Even though we abort the ELS command, the firmware may access
2462                  * the BPL or other resources before it processes our
2463                  * ABORT_MXRI64. Thus we must delay reusing the cmdiocb
2464                  * resources till the actual abort request completes.
2465                  */
2466                 abtsiocbp->context1 = (void *)((unsigned long)icmd->ulpCommand);
2467                 abtsiocbp->context2 = cmdiocb->context2;
2468                 abtsiocbp->context3 = cmdiocb->context3;
2469                 cmdiocb->context2 = NULL;
2470                 cmdiocb->context3 = NULL;
2471                 abtsiocbp->iocb_cmpl = lpfc_sli_abort_elsreq_cmpl;
2472                 break;
2473         default:
2474                 list_add_tail(&abtsiocbp->list, lpfc_iocb_list);
2475                 return 0;
2476         }
2477
2478         iabt->un.amxri.abortType = ABORT_TYPE_ABTS;
2479         iabt->un.amxri.iotag32 = icmd->un.elsreq64.bdl.ulpIoTag32;
2480
2481         iabt->ulpLe = 1;
2482         iabt->ulpClass = CLASS3;
2483         iabt->ulpCommand = CMD_ABORT_MXRI64_CN;
2484
2485         if (lpfc_sli_issue_iocb(phba, pring, abtsiocbp, 0) == IOCB_ERROR) {
2486                 list_add_tail(&abtsiocbp->list, lpfc_iocb_list);
2487                 return 0;
2488         }
2489
2490         return 1;
2491 }
2492
2493 static int
2494 lpfc_sli_validate_iocb_cmd(struct lpfc_scsi_buf *lpfc_cmd, uint16_t tgt_id,
2495                              uint64_t lun_id, struct lpfc_iocbq *iocb,
2496                              uint32_t ctx, lpfc_ctx_cmd ctx_cmd)
2497 {
2498         int rc = 1;
2499
2500         if (lpfc_cmd == NULL)
2501                 return rc;
2502
2503         switch (ctx_cmd) {
2504         case LPFC_CTX_LUN:
2505                 if ((lpfc_cmd->pCmd->device->id == tgt_id) &&
2506                     (lpfc_cmd->pCmd->device->lun == lun_id))
2507                         rc = 0;
2508                 break;
2509         case LPFC_CTX_TGT:
2510                 if (lpfc_cmd->pCmd->device->id == tgt_id)
2511                         rc = 0;
2512                 break;
2513         case LPFC_CTX_CTX:
2514                 if (iocb->iocb.ulpContext == ctx)
2515                         rc = 0;
2516         case LPFC_CTX_HOST:
2517                 rc = 0;
2518                 break;
2519         default:
2520                 printk(KERN_ERR "%s: Unknown context cmd type, value %d\n",
2521                         __FUNCTION__, ctx_cmd);
2522                 break;
2523         }
2524
2525         return rc;
2526 }
2527
2528 int
2529 lpfc_sli_sum_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2530                 uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd ctx_cmd)
2531 {
2532         struct lpfc_iocbq *iocb, *next_iocb;
2533         IOCB_t *cmd = NULL;
2534         struct lpfc_scsi_buf *lpfc_cmd;
2535         int sum = 0, ret_val = 0;
2536
2537         /* Next check the txcmplq */
2538         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2539                 cmd = &iocb->iocb;
2540
2541                 /* Must be a FCP command */
2542                 if ((cmd->ulpCommand != CMD_FCP_ICMND64_CR) &&
2543                     (cmd->ulpCommand != CMD_FCP_IWRITE64_CR) &&
2544                     (cmd->ulpCommand != CMD_FCP_IREAD64_CR)) {
2545                         continue;
2546                 }
2547
2548                 /* context1 MUST be a struct lpfc_scsi_buf */
2549                 lpfc_cmd = (struct lpfc_scsi_buf *) (iocb->context1);
2550                 ret_val = lpfc_sli_validate_iocb_cmd(lpfc_cmd, tgt_id, lun_id,
2551                                                      NULL, 0, ctx_cmd);
2552                 if (ret_val != 0)
2553                         continue;
2554                 sum++;
2555         }
2556         return sum;
2557 }
2558
2559 void
2560 lpfc_sli_abort_fcp_cmpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
2561                            struct lpfc_iocbq * rspiocb)
2562 {
2563         spin_lock_irq(phba->host->host_lock);
2564         list_add_tail(&cmdiocb->list, &phba->lpfc_iocb_list);
2565         spin_unlock_irq(phba->host->host_lock);
2566         return;
2567 }
2568
2569 int
2570 lpfc_sli_abort_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2571                     uint16_t tgt_id, uint64_t lun_id, uint32_t ctx,
2572                     lpfc_ctx_cmd abort_cmd)
2573 {
2574         struct lpfc_iocbq *iocb, *next_iocb;
2575         struct lpfc_iocbq *abtsiocb = NULL;
2576         struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
2577         IOCB_t *cmd = NULL;
2578         struct lpfc_scsi_buf *lpfc_cmd;
2579         int errcnt = 0, ret_val = 0;
2580
2581         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2582                 cmd = &iocb->iocb;
2583
2584                 /* Must be a FCP command */
2585                 if ((cmd->ulpCommand != CMD_FCP_ICMND64_CR) &&
2586                     (cmd->ulpCommand != CMD_FCP_IWRITE64_CR) &&
2587                     (cmd->ulpCommand != CMD_FCP_IREAD64_CR)) {
2588                         continue;
2589                 }
2590
2591                 /* context1 MUST be a struct lpfc_scsi_buf */
2592                 lpfc_cmd = (struct lpfc_scsi_buf *) (iocb->context1);
2593                 ret_val = lpfc_sli_validate_iocb_cmd(lpfc_cmd, tgt_id, lun_id,
2594                                                      iocb, ctx, abort_cmd);
2595                 if (ret_val != 0)
2596                         continue;
2597
2598                 /* issue ABTS for this IOCB based on iotag */
2599                 list_remove_head(lpfc_iocb_list, abtsiocb, struct lpfc_iocbq,
2600                                  list);
2601                 if (abtsiocb == NULL) {
2602                         errcnt++;
2603                         continue;
2604                 }
2605                 memset(abtsiocb, 0, sizeof (struct lpfc_iocbq));
2606
2607                 abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS;
2608                 abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext;
2609                 abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag;
2610                 abtsiocb->iocb.ulpLe = 1;
2611                 abtsiocb->iocb.ulpClass = cmd->ulpClass;
2612
2613                 if (phba->hba_state >= LPFC_LINK_UP)
2614                         abtsiocb->iocb.ulpCommand = CMD_ABORT_XRI_CN;
2615                 else
2616                         abtsiocb->iocb.ulpCommand = CMD_CLOSE_XRI_CN;
2617
2618                 /* Setup callback routine and issue the command. */
2619                 abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
2620                 ret_val = lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0);
2621                 if (ret_val == IOCB_ERROR) {
2622                         list_add_tail(&abtsiocb->list, lpfc_iocb_list);
2623                         errcnt++;
2624                         continue;
2625                 }
2626         }
2627
2628         return errcnt;
2629 }
2630
2631 void
2632 lpfc_sli_wake_iocb_high_priority(struct lpfc_hba * phba,
2633                                  struct lpfc_iocbq * queue1,
2634                                  struct lpfc_iocbq * queue2)
2635 {
2636         if (queue1->context2 && queue2)
2637                 memcpy(queue1->context2, queue2, sizeof (struct lpfc_iocbq));
2638
2639         /* The waiter is looking for LPFC_IO_HIPRI bit to be set
2640            as a signal to wake up */
2641         queue1->iocb_flag |= LPFC_IO_HIPRI;
2642         return;
2643 }
2644
2645 int
2646 lpfc_sli_issue_iocb_wait_high_priority(struct lpfc_hba * phba,
2647                                        struct lpfc_sli_ring * pring,
2648                                        struct lpfc_iocbq * piocb,
2649                                        uint32_t flag,
2650                                        struct lpfc_iocbq * prspiocbq,
2651                                        uint32_t timeout)
2652 {
2653         int j, delay_time,  retval = IOCB_ERROR;
2654
2655         /* The caller must left context1 empty.  */
2656         if (piocb->context_un.hipri_wait_queue != 0) {
2657                 return IOCB_ERROR;
2658         }
2659
2660         /*
2661          * If the caller has provided a response iocbq buffer, context2 must
2662          * be NULL or its an error.
2663          */
2664         if (prspiocbq && piocb->context2) {
2665                 return IOCB_ERROR;
2666         }
2667
2668         piocb->context2 = prspiocbq;
2669
2670         /* Setup callback routine and issue the command. */
2671         piocb->iocb_cmpl = lpfc_sli_wake_iocb_high_priority;
2672         retval = lpfc_sli_issue_iocb(phba, pring, piocb,
2673                                         flag | SLI_IOCB_HIGH_PRIORITY);
2674         if (retval != IOCB_SUCCESS) {
2675                 piocb->context2 = NULL;
2676                 return IOCB_ERROR;
2677         }
2678
2679         /*
2680          * This high-priority iocb was sent out-of-band.  Poll for its
2681          * completion rather than wait for a signal.  Note that the host_lock
2682          * is held by the midlayer and must be released here to allow the
2683          * interrupt handlers to complete the IO and signal this routine via
2684          * the iocb_flag.
2685          * Also, the delay_time is computed to be one second longer than
2686          * the scsi command timeout to give the FW time to abort on
2687          * timeout rather than the driver just giving up.  Typically,
2688          * the midlayer does not specify a time for this command so the
2689          * driver is free to enforce its own timeout.
2690          */
2691
2692         delay_time = ((timeout + 1) * 1000) >> 6;
2693         retval = IOCB_ERROR;
2694         spin_unlock_irq(phba->host->host_lock);
2695         for (j = 0; j < 64; j++) {
2696                 msleep(delay_time);
2697                 if (piocb->iocb_flag & LPFC_IO_HIPRI) {
2698                         piocb->iocb_flag &= ~LPFC_IO_HIPRI;
2699                         retval = IOCB_SUCCESS;
2700                         break;
2701                 }
2702         }
2703
2704         spin_lock_irq(phba->host->host_lock);
2705         piocb->context2 = NULL;
2706         return retval;
2707 }
2708 int
2709 lpfc_sli_issue_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq,
2710                          uint32_t timeout)
2711 {
2712         DECLARE_WAIT_QUEUE_HEAD(done_q);
2713         DECLARE_WAITQUEUE(wq_entry, current);
2714         uint32_t timeleft = 0;
2715         int retval;
2716
2717         /* The caller must leave context1 empty. */
2718         if (pmboxq->context1 != 0) {
2719                 return (MBX_NOT_FINISHED);
2720         }
2721
2722         /* setup wake call as IOCB callback */
2723         pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait;
2724         /* setup context field to pass wait_queue pointer to wake function  */
2725         pmboxq->context1 = &done_q;
2726
2727         /* start to sleep before we wait, to avoid races */
2728         set_current_state(TASK_INTERRUPTIBLE);
2729         add_wait_queue(&done_q, &wq_entry);
2730
2731         /* now issue the command */
2732         retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
2733
2734         if (retval == MBX_BUSY || retval == MBX_SUCCESS) {
2735                 timeleft = schedule_timeout(timeout * HZ);
2736                 pmboxq->context1 = NULL;
2737                 /* if schedule_timeout returns 0, we timed out and were not
2738                    woken up */
2739                 if (timeleft == 0) {
2740                         retval = MBX_TIMEOUT;
2741                 } else {
2742                         retval = MBX_SUCCESS;
2743                 }
2744         }
2745
2746
2747         set_current_state(TASK_RUNNING);
2748         remove_wait_queue(&done_q, &wq_entry);
2749         return retval;
2750 }
2751
2752 irqreturn_t
2753 lpfc_intr_handler(int irq, void *dev_id, struct pt_regs * regs)
2754 {
2755         struct lpfc_hba *phba;
2756         uint32_t ha_copy;
2757         uint32_t work_ha_copy;
2758         unsigned long status;
2759         int i;
2760         uint32_t control;
2761
2762         /*
2763          * Get the driver's phba structure from the dev_id and
2764          * assume the HBA is not interrupting.
2765          */
2766         phba = (struct lpfc_hba *) dev_id;
2767
2768         if (unlikely(!phba))
2769                 return IRQ_NONE;
2770
2771         phba->sli.slistat.sli_intr++;
2772
2773         /*
2774          * Call the HBA to see if it is interrupting.  If not, don't claim
2775          * the interrupt
2776          */
2777
2778         /* Ignore all interrupts during initialization. */
2779         if (unlikely(phba->hba_state < LPFC_LINK_DOWN))
2780                 return IRQ_NONE;
2781
2782         /*
2783          * Read host attention register to determine interrupt source
2784          * Clear Attention Sources, except Error Attention (to
2785          * preserve status) and Link Attention
2786          */
2787         spin_lock(phba->host->host_lock);
2788         ha_copy = readl(phba->HAregaddr);
2789         writel((ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr);
2790         readl(phba->HAregaddr); /* flush */
2791         spin_unlock(phba->host->host_lock);
2792
2793         if (unlikely(!ha_copy))
2794                 return IRQ_NONE;
2795
2796         work_ha_copy = ha_copy & phba->work_ha_mask;
2797
2798         if (unlikely(work_ha_copy)) {
2799                 if (work_ha_copy & HA_LATT) {
2800                         if (phba->sli.sli_flag & LPFC_PROCESS_LA) {
2801                                 /*
2802                                  * Turn off Link Attention interrupts
2803                                  * until CLEAR_LA done
2804                                  */
2805                                 spin_lock(phba->host->host_lock);
2806                                 phba->sli.sli_flag &= ~LPFC_PROCESS_LA;
2807                                 control = readl(phba->HCregaddr);
2808                                 control &= ~HC_LAINT_ENA;
2809                                 writel(control, phba->HCregaddr);
2810                                 readl(phba->HCregaddr); /* flush */
2811                                 spin_unlock(phba->host->host_lock);
2812                         }
2813                         else
2814                                 work_ha_copy &= ~HA_LATT;
2815                 }
2816
2817                 if (work_ha_copy & ~(HA_ERATT|HA_MBATT|HA_LATT)) {
2818                         for (i = 0; i < phba->sli.num_rings; i++) {
2819                                 if (work_ha_copy & (HA_RXATT << (4*i))) {
2820                                         /*
2821                                          * Turn off Slow Rings interrupts
2822                                          */
2823                                         spin_lock(phba->host->host_lock);
2824                                         control = readl(phba->HCregaddr);
2825                                         control &= ~(HC_R0INT_ENA << i);
2826                                         writel(control, phba->HCregaddr);
2827                                         readl(phba->HCregaddr); /* flush */
2828                                         spin_unlock(phba->host->host_lock);
2829                                 }
2830                         }
2831                 }
2832
2833                 if (work_ha_copy & HA_ERATT) {
2834                         phba->hba_state = LPFC_HBA_ERROR;
2835                         /*
2836                          * There was a link/board error.  Read the
2837                          * status register to retrieve the error event
2838                          * and process it.
2839                          */
2840                         phba->sli.slistat.err_attn_event++;
2841                         /* Save status info */
2842                         phba->work_hs = readl(phba->HSregaddr);
2843                         phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
2844                         phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
2845
2846                         /* Clear Chip error bit */
2847                         writel(HA_ERATT, phba->HAregaddr);
2848                         readl(phba->HAregaddr); /* flush */
2849
2850                         /*
2851                          * Reseting the HBA is the only reliable way
2852                          * to shutdown interrupt when there is a
2853                          * ERROR.
2854                          */
2855                         lpfc_sli_send_reset(phba, phba->hba_state);
2856                 }
2857
2858                 spin_lock(phba->host->host_lock);
2859                 phba->work_ha |= work_ha_copy;
2860                 if (phba->work_wait)
2861                         wake_up(phba->work_wait);
2862                 spin_unlock(phba->host->host_lock);
2863         }
2864
2865         ha_copy &= ~(phba->work_ha_mask);
2866
2867         /*
2868          * Process all events on FCP ring.  Take the optimized path for
2869          * FCP IO.  Any other IO is slow path and is handled by
2870          * the worker thread.
2871          */
2872         status = (ha_copy & (HA_RXMASK  << (4*LPFC_FCP_RING)));
2873         status >>= (4*LPFC_FCP_RING);
2874         if (status & HA_RXATT)
2875                 lpfc_sli_handle_fast_ring_event(phba,
2876                                                 &phba->sli.ring[LPFC_FCP_RING],
2877                                                 status);
2878         return IRQ_HANDLED;
2879
2880 } /* lpfc_intr_handler */