[XFRM]: Fix possible overflow of sock->sk_policy
[linux-3.10.git] / drivers / scsi / lpfc / lpfc_sli.c
1 /*******************************************************************
2  * This file is part of the Emulex Linux Device Driver for         *
3  * Enterprise Fibre Channel Host Bus Adapters.                     *
4  * Refer to the README file included with this package for         *
5  * driver version and adapter support.                             *
6  * Copyright (C) 2004 Emulex Corporation.                          *
7  * www.emulex.com                                                  *
8  *                                                                 *
9  * This program is free software; you can redistribute it and/or   *
10  * modify it under the terms of the GNU General Public License     *
11  * as published by the Free Software Foundation; either version 2  *
12  * of the License, or (at your option) any later version.          *
13  *                                                                 *
14  * This program is distributed in the hope that it will be useful, *
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of  *
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the   *
17  * GNU General Public License for more details, a copy of which    *
18  * can be found in the file COPYING included with this package.    *
19  *******************************************************************/
20
21 /*
22  * $Id: lpfc_sli.c 1.232 2005/04/13 11:59:16EDT sf_support Exp  $
23  */
24
25 #include <linux/blkdev.h>
26 #include <linux/pci.h>
27 #include <linux/interrupt.h>
28 #include <linux/delay.h>
29
30 #include <scsi/scsi_cmnd.h>
31 #include <scsi/scsi_device.h>
32 #include <scsi/scsi_host.h>
33
34 #include "lpfc_hw.h"
35 #include "lpfc_sli.h"
36 #include "lpfc_disc.h"
37 #include "lpfc_scsi.h"
38 #include "lpfc.h"
39 #include "lpfc_crtn.h"
40 #include "lpfc_logmsg.h"
41 #include "lpfc_compat.h"
42
43 /*
44  * Define macro to log: Mailbox command x%x cannot issue Data
45  * This allows multiple uses of lpfc_msgBlk0311
46  * w/o perturbing log msg utility.
47  */
48 #define LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag) \
49                         lpfc_printf_log(phba, \
50                                 KERN_INFO, \
51                                 LOG_MBOX | LOG_SLI, \
52                                 "%d:0311 Mailbox command x%x cannot issue " \
53                                 "Data: x%x x%x x%x\n", \
54                                 phba->brd_no, \
55                                 mb->mbxCommand,         \
56                                 phba->hba_state,        \
57                                 psli->sli_flag, \
58                                 flag);
59
60
61 /* There are only four IOCB completion types. */
62 typedef enum _lpfc_iocb_type {
63         LPFC_UNKNOWN_IOCB,
64         LPFC_UNSOL_IOCB,
65         LPFC_SOL_IOCB,
66         LPFC_ABORT_IOCB
67 } lpfc_iocb_type;
68
69 /*
70  * Translate the iocb command to an iocb command type used to decide the final
71  * disposition of each completed IOCB.
72  */
73 static lpfc_iocb_type
74 lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd)
75 {
76         lpfc_iocb_type type = LPFC_UNKNOWN_IOCB;
77
78         if (iocb_cmnd > CMD_MAX_IOCB_CMD)
79                 return 0;
80
81         switch (iocb_cmnd) {
82         case CMD_XMIT_SEQUENCE_CR:
83         case CMD_XMIT_SEQUENCE_CX:
84         case CMD_XMIT_BCAST_CN:
85         case CMD_XMIT_BCAST_CX:
86         case CMD_ELS_REQUEST_CR:
87         case CMD_ELS_REQUEST_CX:
88         case CMD_CREATE_XRI_CR:
89         case CMD_CREATE_XRI_CX:
90         case CMD_GET_RPI_CN:
91         case CMD_XMIT_ELS_RSP_CX:
92         case CMD_GET_RPI_CR:
93         case CMD_FCP_IWRITE_CR:
94         case CMD_FCP_IWRITE_CX:
95         case CMD_FCP_IREAD_CR:
96         case CMD_FCP_IREAD_CX:
97         case CMD_FCP_ICMND_CR:
98         case CMD_FCP_ICMND_CX:
99         case CMD_ADAPTER_MSG:
100         case CMD_ADAPTER_DUMP:
101         case CMD_XMIT_SEQUENCE64_CR:
102         case CMD_XMIT_SEQUENCE64_CX:
103         case CMD_XMIT_BCAST64_CN:
104         case CMD_XMIT_BCAST64_CX:
105         case CMD_ELS_REQUEST64_CR:
106         case CMD_ELS_REQUEST64_CX:
107         case CMD_FCP_IWRITE64_CR:
108         case CMD_FCP_IWRITE64_CX:
109         case CMD_FCP_IREAD64_CR:
110         case CMD_FCP_IREAD64_CX:
111         case CMD_FCP_ICMND64_CR:
112         case CMD_FCP_ICMND64_CX:
113         case CMD_GEN_REQUEST64_CR:
114         case CMD_GEN_REQUEST64_CX:
115         case CMD_XMIT_ELS_RSP64_CX:
116                 type = LPFC_SOL_IOCB;
117                 break;
118         case CMD_ABORT_XRI_CN:
119         case CMD_ABORT_XRI_CX:
120         case CMD_CLOSE_XRI_CN:
121         case CMD_CLOSE_XRI_CX:
122         case CMD_XRI_ABORTED_CX:
123         case CMD_ABORT_MXRI64_CN:
124                 type = LPFC_ABORT_IOCB;
125                 break;
126         case CMD_RCV_SEQUENCE_CX:
127         case CMD_RCV_ELS_REQ_CX:
128         case CMD_RCV_SEQUENCE64_CX:
129         case CMD_RCV_ELS_REQ64_CX:
130                 type = LPFC_UNSOL_IOCB;
131                 break;
132         default:
133                 type = LPFC_UNKNOWN_IOCB;
134                 break;
135         }
136
137         return type;
138 }
139
140 static int
141 lpfc_sli_ring_map(struct lpfc_hba * phba, LPFC_MBOXQ_t *pmb)
142 {
143         struct lpfc_sli *psli = &phba->sli;
144         MAILBOX_t *pmbox = &pmb->mb;
145         int i, rc;
146
147         for (i = 0; i < psli->num_rings; i++) {
148                 phba->hba_state = LPFC_INIT_MBX_CMDS;
149                 lpfc_config_ring(phba, i, pmb);
150                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
151                 if (rc != MBX_SUCCESS) {
152                         lpfc_printf_log(phba,
153                                         KERN_ERR,
154                                         LOG_INIT,
155                                         "%d:0446 Adapter failed to init, "
156                                         "mbxCmd x%x CFG_RING, mbxStatus x%x, "
157                                         "ring %d\n",
158                                         phba->brd_no,
159                                         pmbox->mbxCommand,
160                                         pmbox->mbxStatus,
161                                         i);
162                         phba->hba_state = LPFC_HBA_ERROR;
163                         return -ENXIO;
164                 }
165         }
166         return 0;
167 }
168
169 static int
170 lpfc_sli_ringtxcmpl_put(struct lpfc_hba * phba,
171                         struct lpfc_sli_ring * pring, struct lpfc_iocbq * piocb)
172 {
173         uint16_t iotag;
174
175         list_add_tail(&piocb->list, &pring->txcmplq);
176         pring->txcmplq_cnt++;
177         if (unlikely(pring->ringno == LPFC_ELS_RING))
178                 mod_timer(&phba->els_tmofunc,
179                                         jiffies + HZ * (phba->fc_ratov << 1));
180
181         if (pring->fast_lookup) {
182                 /* Setup fast lookup based on iotag for completion */
183                 iotag = piocb->iocb.ulpIoTag;
184                 if (iotag && (iotag < pring->fast_iotag))
185                         *(pring->fast_lookup + iotag) = piocb;
186                 else {
187
188                         /* Cmd ring <ringno> put: iotag <iotag> greater then
189                            configured max <fast_iotag> wd0 <icmd> */
190                         lpfc_printf_log(phba,
191                                         KERN_ERR,
192                                         LOG_SLI,
193                                         "%d:0316 Cmd ring %d put: iotag x%x "
194                                         "greater then configured max x%x "
195                                         "wd0 x%x\n",
196                                         phba->brd_no,
197                                         pring->ringno, iotag,
198                                         pring->fast_iotag,
199                                         *(((uint32_t *)(&piocb->iocb)) + 7));
200                 }
201         }
202         return (0);
203 }
204
205 static struct lpfc_iocbq *
206 lpfc_sli_ringtx_get(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
207 {
208         struct list_head *dlp;
209         struct lpfc_iocbq *cmd_iocb;
210
211         dlp = &pring->txq;
212         cmd_iocb = NULL;
213         list_remove_head((&pring->txq), cmd_iocb,
214                          struct lpfc_iocbq,
215                          list);
216         if (cmd_iocb) {
217                 /* If the first ptr is not equal to the list header,
218                  * deque the IOCBQ_t and return it.
219                  */
220                 pring->txq_cnt--;
221         }
222         return (cmd_iocb);
223 }
224
225 static IOCB_t *
226 lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
227 {
228         MAILBOX_t *mbox = (MAILBOX_t *)phba->sli.MBhostaddr;
229         PGP *pgp = (PGP *)&mbox->us.s2.port[pring->ringno];
230         uint32_t  max_cmd_idx = pring->numCiocb;
231         IOCB_t *iocb = NULL;
232
233         if ((pring->next_cmdidx == pring->cmdidx) &&
234            (++pring->next_cmdidx >= max_cmd_idx))
235                 pring->next_cmdidx = 0;
236
237         if (unlikely(pring->local_getidx == pring->next_cmdidx)) {
238
239                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
240
241                 if (unlikely(pring->local_getidx >= max_cmd_idx)) {
242                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
243                                         "%d:0315 Ring %d issue: portCmdGet %d "
244                                         "is bigger then cmd ring %d\n",
245                                         phba->brd_no, pring->ringno,
246                                         pring->local_getidx, max_cmd_idx);
247
248                         phba->hba_state = LPFC_HBA_ERROR;
249                         /*
250                          * All error attention handlers are posted to
251                          * worker thread
252                          */
253                         phba->work_ha |= HA_ERATT;
254                         phba->work_hs = HS_FFER3;
255                         if (phba->work_wait)
256                                 wake_up(phba->work_wait);
257
258                         return NULL;
259                 }
260
261                 if (pring->local_getidx == pring->next_cmdidx)
262                         return NULL;
263         }
264
265         iocb = IOCB_ENTRY(pring->cmdringaddr, pring->cmdidx);
266
267         return iocb;
268 }
269
270 static uint32_t
271 lpfc_sli_next_iotag(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
272 {
273         uint32_t search_start;
274
275         if (pring->fast_lookup == NULL) {
276                 pring->iotag_ctr++;
277                 if (pring->iotag_ctr >= pring->iotag_max)
278                         pring->iotag_ctr = 1;
279                 return pring->iotag_ctr;
280         }
281
282         search_start = pring->iotag_ctr;
283
284         do {
285                 pring->iotag_ctr++;
286                 if (pring->iotag_ctr >= pring->fast_iotag)
287                         pring->iotag_ctr = 1;
288
289                 if (*(pring->fast_lookup + pring->iotag_ctr) == NULL)
290                         return pring->iotag_ctr;
291
292         } while (pring->iotag_ctr != search_start);
293
294         /*
295          * Outstanding I/O count for ring <ringno> is at max <fast_iotag>
296          */
297         lpfc_printf_log(phba,
298                 KERN_ERR,
299                 LOG_SLI,
300                 "%d:0318 Outstanding I/O count for ring %d is at max x%x\n",
301                 phba->brd_no,
302                 pring->ringno,
303                 pring->fast_iotag);
304         return (0);
305 }
306
307 static void
308 lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
309                 IOCB_t *iocb, struct lpfc_iocbq *nextiocb)
310 {
311         /*
312          * Allocate and set up an iotag
313          */
314         nextiocb->iocb.ulpIoTag =
315                 lpfc_sli_next_iotag(phba, &phba->sli.ring[phba->sli.fcp_ring]);
316
317         /*
318          * Issue iocb command to adapter
319          */
320         lpfc_sli_pcimem_bcopy(&nextiocb->iocb, iocb, sizeof (IOCB_t));
321         wmb();
322         pring->stats.iocb_cmd++;
323
324         /*
325          * If there is no completion routine to call, we can release the
326          * IOCB buffer back right now. For IOCBs, like QUE_RING_BUF,
327          * that have no rsp ring completion, iocb_cmpl MUST be NULL.
328          */
329         if (nextiocb->iocb_cmpl)
330                 lpfc_sli_ringtxcmpl_put(phba, pring, nextiocb);
331         else {
332                 list_add_tail(&nextiocb->list, &phba->lpfc_iocb_list);
333         }
334
335         /*
336          * Let the HBA know what IOCB slot will be the next one the
337          * driver will put a command into.
338          */
339         pring->cmdidx = pring->next_cmdidx;
340         writeb(pring->cmdidx, phba->MBslimaddr
341                + (SLIMOFF + (pring->ringno * 2)) * 4);
342 }
343
344 static void
345 lpfc_sli_update_full_ring(struct lpfc_hba * phba,
346                           struct lpfc_sli_ring *pring)
347 {
348         int ringno = pring->ringno;
349
350         pring->flag |= LPFC_CALL_RING_AVAILABLE;
351
352         wmb();
353
354         /*
355          * Set ring 'ringno' to SET R0CE_REQ in Chip Att register.
356          * The HBA will tell us when an IOCB entry is available.
357          */
358         writel((CA_R0ATT|CA_R0CE_REQ) << (ringno*4), phba->CAregaddr);
359         readl(phba->CAregaddr); /* flush */
360
361         pring->stats.iocb_cmd_full++;
362 }
363
364 static void
365 lpfc_sli_update_ring(struct lpfc_hba * phba,
366                      struct lpfc_sli_ring *pring)
367 {
368         int ringno = pring->ringno;
369
370         /*
371          * Tell the HBA that there is work to do in this ring.
372          */
373         wmb();
374         writel(CA_R0ATT << (ringno * 4), phba->CAregaddr);
375         readl(phba->CAregaddr); /* flush */
376 }
377
378 static void
379 lpfc_sli_resume_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
380 {
381         IOCB_t *iocb;
382         struct lpfc_iocbq *nextiocb;
383
384         /*
385          * Check to see if:
386          *  (a) there is anything on the txq to send
387          *  (b) link is up
388          *  (c) link attention events can be processed (fcp ring only)
389          *  (d) IOCB processing is not blocked by the outstanding mbox command.
390          */
391         if (pring->txq_cnt &&
392             (phba->hba_state > LPFC_LINK_DOWN) &&
393             (pring->ringno != phba->sli.fcp_ring ||
394              phba->sli.sli_flag & LPFC_PROCESS_LA) &&
395             !(pring->flag & LPFC_STOP_IOCB_MBX)) {
396
397                 while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
398                        (nextiocb = lpfc_sli_ringtx_get(phba, pring)))
399                         lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
400
401                 if (iocb)
402                         lpfc_sli_update_ring(phba, pring);
403                 else
404                         lpfc_sli_update_full_ring(phba, pring);
405         }
406
407         return;
408 }
409
410 /* lpfc_sli_turn_on_ring is only called by lpfc_sli_handle_mb_event below */
411 static void
412 lpfc_sli_turn_on_ring(struct lpfc_hba * phba, int ringno)
413 {
414         PGP *pgp =
415                 ((PGP *) &
416                  (((MAILBOX_t *)phba->sli.MBhostaddr)->us.s2.port[ringno]));
417
418         /* If the ring is active, flag it */
419         if (phba->sli.ring[ringno].cmdringaddr) {
420                 if (phba->sli.ring[ringno].flag & LPFC_STOP_IOCB_MBX) {
421                         phba->sli.ring[ringno].flag &= ~LPFC_STOP_IOCB_MBX;
422                         /*
423                          * Force update of the local copy of cmdGetInx
424                          */
425                         phba->sli.ring[ringno].local_getidx
426                                 = le32_to_cpu(pgp->cmdGetInx);
427                         spin_lock_irq(phba->host->host_lock);
428                         lpfc_sli_resume_iocb(phba, &phba->sli.ring[ringno]);
429                         spin_unlock_irq(phba->host->host_lock);
430                 }
431         }
432 }
433
434 static int
435 lpfc_sli_chk_mbx_command(uint8_t mbxCommand)
436 {
437         uint8_t ret;
438
439         switch (mbxCommand) {
440         case MBX_LOAD_SM:
441         case MBX_READ_NV:
442         case MBX_WRITE_NV:
443         case MBX_RUN_BIU_DIAG:
444         case MBX_INIT_LINK:
445         case MBX_DOWN_LINK:
446         case MBX_CONFIG_LINK:
447         case MBX_CONFIG_RING:
448         case MBX_RESET_RING:
449         case MBX_READ_CONFIG:
450         case MBX_READ_RCONFIG:
451         case MBX_READ_SPARM:
452         case MBX_READ_STATUS:
453         case MBX_READ_RPI:
454         case MBX_READ_XRI:
455         case MBX_READ_REV:
456         case MBX_READ_LNK_STAT:
457         case MBX_REG_LOGIN:
458         case MBX_UNREG_LOGIN:
459         case MBX_READ_LA:
460         case MBX_CLEAR_LA:
461         case MBX_DUMP_MEMORY:
462         case MBX_DUMP_CONTEXT:
463         case MBX_RUN_DIAGS:
464         case MBX_RESTART:
465         case MBX_UPDATE_CFG:
466         case MBX_DOWN_LOAD:
467         case MBX_DEL_LD_ENTRY:
468         case MBX_RUN_PROGRAM:
469         case MBX_SET_MASK:
470         case MBX_SET_SLIM:
471         case MBX_UNREG_D_ID:
472         case MBX_CONFIG_FARP:
473         case MBX_LOAD_AREA:
474         case MBX_RUN_BIU_DIAG64:
475         case MBX_CONFIG_PORT:
476         case MBX_READ_SPARM64:
477         case MBX_READ_RPI64:
478         case MBX_REG_LOGIN64:
479         case MBX_READ_LA64:
480         case MBX_FLASH_WR_ULA:
481         case MBX_SET_DEBUG:
482         case MBX_LOAD_EXP_ROM:
483                 ret = mbxCommand;
484                 break;
485         default:
486                 ret = MBX_SHUTDOWN;
487                 break;
488         }
489         return (ret);
490 }
491 static void
492 lpfc_sli_wake_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
493 {
494         wait_queue_head_t *pdone_q;
495
496         /*
497          * If pdone_q is empty, the driver thread gave up waiting and
498          * continued running.
499          */
500         pdone_q = (wait_queue_head_t *) pmboxq->context1;
501         if (pdone_q)
502                 wake_up_interruptible(pdone_q);
503         return;
504 }
505
506 void
507 lpfc_sli_def_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
508 {
509         struct lpfc_dmabuf *mp;
510         mp = (struct lpfc_dmabuf *) (pmb->context1);
511         if (mp) {
512                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
513                 kfree(mp);
514         }
515         mempool_free( pmb, phba->mbox_mem_pool);
516         return;
517 }
518
519 int
520 lpfc_sli_handle_mb_event(struct lpfc_hba * phba)
521 {
522         MAILBOX_t *mbox;
523         MAILBOX_t *pmbox;
524         LPFC_MBOXQ_t *pmb;
525         struct lpfc_sli *psli;
526         int i, rc;
527         uint32_t process_next;
528
529         psli = &phba->sli;
530         /* We should only get here if we are in SLI2 mode */
531         if (!(phba->sli.sli_flag & LPFC_SLI2_ACTIVE)) {
532                 return (1);
533         }
534
535         phba->sli.slistat.mbox_event++;
536
537         /* Get a Mailbox buffer to setup mailbox commands for callback */
538         if ((pmb = phba->sli.mbox_active)) {
539                 pmbox = &pmb->mb;
540                 mbox = (MAILBOX_t *) phba->sli.MBhostaddr;
541
542                 /* First check out the status word */
543                 lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof (uint32_t));
544
545                 /* Sanity check to ensure the host owns the mailbox */
546                 if (pmbox->mbxOwner != OWN_HOST) {
547                         /* Lets try for a while */
548                         for (i = 0; i < 10240; i++) {
549                                 /* First copy command data */
550                                 lpfc_sli_pcimem_bcopy(mbox, pmbox,
551                                                         sizeof (uint32_t));
552                                 if (pmbox->mbxOwner == OWN_HOST)
553                                         goto mbout;
554                         }
555                         /* Stray Mailbox Interrupt, mbxCommand <cmd> mbxStatus
556                            <status> */
557                         lpfc_printf_log(phba,
558                                         KERN_ERR,
559                                         LOG_MBOX | LOG_SLI,
560                                         "%d:0304 Stray Mailbox Interrupt "
561                                         "mbxCommand x%x mbxStatus x%x\n",
562                                         phba->brd_no,
563                                         pmbox->mbxCommand,
564                                         pmbox->mbxStatus);
565
566                         spin_lock_irq(phba->host->host_lock);
567                         phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE;
568                         spin_unlock_irq(phba->host->host_lock);
569                         return (1);
570                 }
571
572               mbout:
573                 del_timer_sync(&phba->sli.mbox_tmo);
574                 phba->work_hba_events &= ~WORKER_MBOX_TMO;
575
576                 /*
577                  * It is a fatal error if unknown mbox command completion.
578                  */
579                 if (lpfc_sli_chk_mbx_command(pmbox->mbxCommand) ==
580                     MBX_SHUTDOWN) {
581
582                         /* Unknow mailbox command compl */
583                         lpfc_printf_log(phba,
584                                 KERN_ERR,
585                                 LOG_MBOX | LOG_SLI,
586                                 "%d:0323 Unknown Mailbox command %x Cmpl\n",
587                                 phba->brd_no,
588                                 pmbox->mbxCommand);
589                         phba->hba_state = LPFC_HBA_ERROR;
590                         phba->work_hs = HS_FFER3;
591                         lpfc_handle_eratt(phba);
592                         return (0);
593                 }
594
595                 phba->sli.mbox_active = NULL;
596                 if (pmbox->mbxStatus) {
597                         phba->sli.slistat.mbox_stat_err++;
598                         if (pmbox->mbxStatus == MBXERR_NO_RESOURCES) {
599                                 /* Mbox cmd cmpl error - RETRYing */
600                                 lpfc_printf_log(phba,
601                                         KERN_INFO,
602                                         LOG_MBOX | LOG_SLI,
603                                         "%d:0305 Mbox cmd cmpl error - "
604                                         "RETRYing Data: x%x x%x x%x x%x\n",
605                                         phba->brd_no,
606                                         pmbox->mbxCommand,
607                                         pmbox->mbxStatus,
608                                         pmbox->un.varWords[0],
609                                         phba->hba_state);
610                                 pmbox->mbxStatus = 0;
611                                 pmbox->mbxOwner = OWN_HOST;
612                                 spin_lock_irq(phba->host->host_lock);
613                                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
614                                 spin_unlock_irq(phba->host->host_lock);
615                                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
616                                 if (rc == MBX_SUCCESS)
617                                         return (0);
618                         }
619                 }
620
621                 /* Mailbox cmd <cmd> Cmpl <cmpl> */
622                 lpfc_printf_log(phba,
623                                 KERN_INFO,
624                                 LOG_MBOX | LOG_SLI,
625                                 "%d:0307 Mailbox cmd x%x Cmpl x%p "
626                                 "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x\n",
627                                 phba->brd_no,
628                                 pmbox->mbxCommand,
629                                 pmb->mbox_cmpl,
630                                 *((uint32_t *) pmbox),
631                                 pmbox->un.varWords[0],
632                                 pmbox->un.varWords[1],
633                                 pmbox->un.varWords[2],
634                                 pmbox->un.varWords[3],
635                                 pmbox->un.varWords[4],
636                                 pmbox->un.varWords[5],
637                                 pmbox->un.varWords[6],
638                                 pmbox->un.varWords[7]);
639
640                 if (pmb->mbox_cmpl) {
641                         lpfc_sli_pcimem_bcopy(mbox, pmbox, MAILBOX_CMD_SIZE);
642                         pmb->mbox_cmpl(phba,pmb);
643                 }
644         }
645
646
647         do {
648                 process_next = 0;       /* by default don't loop */
649                 spin_lock_irq(phba->host->host_lock);
650                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
651
652                 /* Process next mailbox command if there is one */
653                 if ((pmb = lpfc_mbox_get(phba))) {
654                         spin_unlock_irq(phba->host->host_lock);
655                         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
656                         if (rc == MBX_NOT_FINISHED) {
657                                 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
658                                 pmb->mbox_cmpl(phba,pmb);
659                                 process_next = 1;
660                                 continue;       /* loop back */
661                         }
662                 } else {
663                         spin_unlock_irq(phba->host->host_lock);
664                         /* Turn on IOCB processing */
665                         for (i = 0; i < phba->sli.num_rings; i++) {
666                                 lpfc_sli_turn_on_ring(phba, i);
667                         }
668
669                         /* Free any lpfc_dmabuf's waiting for mbox cmd cmpls */
670                         while (!list_empty(&phba->freebufList)) {
671                                 struct lpfc_dmabuf *mp;
672
673                                 mp = NULL;
674                                 list_remove_head((&phba->freebufList),
675                                                  mp,
676                                                  struct lpfc_dmabuf,
677                                                  list);
678                                 if (mp) {
679                                         lpfc_mbuf_free(phba, mp->virt,
680                                                        mp->phys);
681                                         kfree(mp);
682                                 }
683                         }
684                 }
685
686         } while (process_next);
687
688         return (0);
689 }
690 static int
691 lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
692                             struct lpfc_iocbq *saveq)
693 {
694         IOCB_t           * irsp;
695         WORD5            * w5p;
696         uint32_t           Rctl, Type;
697         uint32_t           match, i;
698
699         match = 0;
700         irsp = &(saveq->iocb);
701         if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX)
702             || (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX)) {
703                 Rctl = FC_ELS_REQ;
704                 Type = FC_ELS_DATA;
705         } else {
706                 w5p =
707                     (WORD5 *) & (saveq->iocb.un.
708                                  ulpWord[5]);
709                 Rctl = w5p->hcsw.Rctl;
710                 Type = w5p->hcsw.Type;
711
712                 /* Firmware Workaround */
713                 if ((Rctl == 0) && (pring->ringno == LPFC_ELS_RING) &&
714                         (irsp->ulpCommand == CMD_RCV_SEQUENCE64_CX)) {
715                         Rctl = FC_ELS_REQ;
716                         Type = FC_ELS_DATA;
717                         w5p->hcsw.Rctl = Rctl;
718                         w5p->hcsw.Type = Type;
719                 }
720         }
721         /* unSolicited Responses */
722         if (pring->prt[0].profile) {
723                 (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring, saveq);
724                 match = 1;
725         } else {
726                 /* We must search, based on rctl / type
727                    for the right routine */
728                 for (i = 0; i < pring->num_mask;
729                      i++) {
730                         if ((pring->prt[i].rctl ==
731                              Rctl)
732                             && (pring->prt[i].
733                                 type == Type)) {
734                                 (pring->prt[i].lpfc_sli_rcv_unsol_event)
735                                         (phba, pring, saveq);
736                                 match = 1;
737                                 break;
738                         }
739                 }
740         }
741         if (match == 0) {
742                 /* Unexpected Rctl / Type received */
743                 /* Ring <ringno> handler: unexpected
744                    Rctl <Rctl> Type <Type> received */
745                 lpfc_printf_log(phba,
746                                 KERN_WARNING,
747                                 LOG_SLI,
748                                 "%d:0313 Ring %d handler: unexpected Rctl x%x "
749                                 "Type x%x received \n",
750                                 phba->brd_no,
751                                 pring->ringno,
752                                 Rctl,
753                                 Type);
754         }
755         return(1);
756 }
757
758 static struct lpfc_iocbq *
759 lpfc_sli_txcmpl_ring_search_slow(struct lpfc_sli_ring * pring,
760                                  struct lpfc_iocbq * prspiocb)
761 {
762         IOCB_t *icmd = NULL;
763         IOCB_t *irsp = NULL;
764         struct lpfc_iocbq *cmd_iocb;
765         struct lpfc_iocbq *iocb, *next_iocb;
766         uint16_t iotag;
767
768         irsp = &prspiocb->iocb;
769         iotag = irsp->ulpIoTag;
770         cmd_iocb = NULL;
771
772         /* Search through txcmpl from the begining */
773         list_for_each_entry_safe(iocb, next_iocb, &(pring->txcmplq), list) {
774                 icmd = &iocb->iocb;
775                 if (iotag == icmd->ulpIoTag) {
776                         /* Found a match.  */
777                         cmd_iocb = iocb;
778                         list_del(&iocb->list);
779                         pring->txcmplq_cnt--;
780                         break;
781                 }
782         }
783
784         return (cmd_iocb);
785 }
786
787 static struct lpfc_iocbq *
788 lpfc_sli_txcmpl_ring_iotag_lookup(struct lpfc_hba * phba,
789                         struct lpfc_sli_ring * pring,
790                         struct lpfc_iocbq * prspiocb)
791 {
792         IOCB_t *irsp = NULL;
793         struct lpfc_iocbq *cmd_iocb = NULL;
794         uint16_t iotag;
795
796         if (unlikely(pring->fast_lookup == NULL))
797                 return NULL;
798
799         /* Use fast lookup based on iotag for completion */
800         irsp = &prspiocb->iocb;
801         iotag = irsp->ulpIoTag;
802         if (iotag < pring->fast_iotag) {
803                 cmd_iocb = *(pring->fast_lookup + iotag);
804                 *(pring->fast_lookup + iotag) = NULL;
805                 if (cmd_iocb) {
806                         list_del(&cmd_iocb->list);
807                         pring->txcmplq_cnt--;
808                         return cmd_iocb;
809                 } else {
810                         /*
811                          * This is clearly an error.  A ring that uses iotags
812                          * should never have a interrupt for a completion that
813                          * is not on the ring.  Return NULL and log a error.
814                          */
815                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
816                                 "%d:0327 Rsp ring %d error -  command "
817                                 "completion for iotag x%x not found\n",
818                                 phba->brd_no, pring->ringno, iotag);
819                         return NULL;
820                 }
821         }
822
823         /*
824          * Rsp ring <ringno> get: iotag <iotag> greater then
825          * configured max <fast_iotag> wd0 <irsp>.  This is an
826          * error.  Just return NULL.
827          */
828         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
829                         "%d:0317 Rsp ring %d get: iotag x%x greater then "
830                         "configured max x%x wd0 x%x\n",
831                         phba->brd_no, pring->ringno, iotag, pring->fast_iotag,
832                         *(((uint32_t *) irsp) + 7));
833         return NULL;
834 }
835
836 static int
837 lpfc_sli_process_sol_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
838                           struct lpfc_iocbq *saveq)
839 {
840         struct lpfc_iocbq * cmdiocbp;
841         int rc = 1;
842         unsigned long iflag;
843
844         /* Based on the iotag field, get the cmd IOCB from the txcmplq */
845         spin_lock_irqsave(phba->host->host_lock, iflag);
846         cmdiocbp = lpfc_sli_txcmpl_ring_search_slow(pring, saveq);
847         if (cmdiocbp) {
848                 if (cmdiocbp->iocb_cmpl) {
849                         /*
850                          * Post all ELS completions to the worker thread.
851                          * All other are passed to the completion callback.
852                          */
853                         if (pring->ringno == LPFC_ELS_RING) {
854                                 spin_unlock_irqrestore(phba->host->host_lock,
855                                                        iflag);
856                                 (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
857                                 spin_lock_irqsave(phba->host->host_lock, iflag);
858                         }
859                         else {
860                                 if (cmdiocbp->iocb_flag & LPFC_IO_POLL)
861                                         rc = 0;
862
863                                 spin_unlock_irqrestore(phba->host->host_lock,
864                                                        iflag);
865                                 (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
866                                 spin_lock_irqsave(phba->host->host_lock, iflag);
867                         }
868                 } else {
869                         list_add_tail(&cmdiocbp->list, &phba->lpfc_iocb_list);
870                 }
871         } else {
872                 /*
873                  * Unknown initiating command based on the response iotag.
874                  * This could be the case on the ELS ring because of
875                  * lpfc_els_abort().
876                  */
877                 if (pring->ringno != LPFC_ELS_RING) {
878                         /*
879                          * Ring <ringno> handler: unexpected completion IoTag
880                          * <IoTag>
881                          */
882                         lpfc_printf_log(phba,
883                                 KERN_WARNING,
884                                 LOG_SLI,
885                                 "%d:0322 Ring %d handler: unexpected "
886                                 "completion IoTag x%x Data: x%x x%x x%x x%x\n",
887                                 phba->brd_no,
888                                 pring->ringno,
889                                 saveq->iocb.ulpIoTag,
890                                 saveq->iocb.ulpStatus,
891                                 saveq->iocb.un.ulpWord[4],
892                                 saveq->iocb.ulpCommand,
893                                 saveq->iocb.ulpContext);
894                 }
895         }
896         spin_unlock_irqrestore(phba->host->host_lock, iflag);
897         return rc;
898 }
899
900 /*
901  * This routine presumes LPFC_FCP_RING handling and doesn't bother
902  * to check it explicitly.
903  */
904 static int
905 lpfc_sli_handle_fast_ring_event(struct lpfc_hba * phba,
906                                 struct lpfc_sli_ring * pring, uint32_t mask)
907 {
908         IOCB_t *irsp = NULL;
909         struct lpfc_iocbq *cmdiocbq = NULL;
910         struct lpfc_iocbq rspiocbq;
911         PGP *pgp;
912         uint32_t status;
913         uint32_t portRspPut, portRspMax;
914         int rc = 1;
915         lpfc_iocb_type type;
916         unsigned long iflag;
917         uint32_t rsp_cmpl = 0;
918         void __iomem  *to_slim;
919
920         spin_lock_irqsave(phba->host->host_lock, iflag);
921         pring->stats.iocb_event++;
922
923         /* The driver assumes SLI-2 mode */
924         pgp = (PGP *) &((MAILBOX_t *) phba->sli.MBhostaddr)
925                 ->us.s2.port[pring->ringno];
926
927         /*
928          * The next available response entry should never exceed the maximum
929          * entries.  If it does, treat it as an adapter hardware error.
930          */
931         portRspMax = pring->numRiocb;
932         portRspPut = le32_to_cpu(pgp->rspPutInx);
933         if (unlikely(portRspPut >= portRspMax)) {
934                 /*
935                  * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
936                  * rsp ring <portRspMax>
937                  */
938                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
939                                 "%d:0312 Ring %d handler: portRspPut %d "
940                                 "is bigger then rsp ring %d\n",
941                                 phba->brd_no, pring->ringno, portRspPut,
942                                 portRspMax);
943
944                 phba->hba_state = LPFC_HBA_ERROR;
945
946                 /* All error attention handlers are posted to worker thread */
947                 phba->work_ha |= HA_ERATT;
948                 phba->work_hs = HS_FFER3;
949                 if (phba->work_wait)
950                         wake_up(phba->work_wait);
951
952                 spin_unlock_irqrestore(phba->host->host_lock, iflag);
953                 return 1;
954         }
955
956         rmb();
957         while (pring->rspidx != portRspPut) {
958                 irsp = (IOCB_t *) IOCB_ENTRY(pring->rspringaddr, pring->rspidx);
959                 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
960                 pring->stats.iocb_rsp++;
961                 rsp_cmpl++;
962
963                 if (unlikely(irsp->ulpStatus)) {
964                         /* Rsp ring <ringno> error: IOCB */
965                         lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
966                                 "%d:0326 Rsp Ring %d error: IOCB Data: "
967                                 "x%x x%x x%x x%x x%x x%x x%x x%x\n",
968                                 phba->brd_no, pring->ringno,
969                                 irsp->un.ulpWord[0], irsp->un.ulpWord[1],
970                                 irsp->un.ulpWord[2], irsp->un.ulpWord[3],
971                                 irsp->un.ulpWord[4], irsp->un.ulpWord[5],
972                                 *(((uint32_t *) irsp) + 6),
973                                 *(((uint32_t *) irsp) + 7));
974                 }
975
976                 switch (type) {
977                 case LPFC_ABORT_IOCB:
978                 case LPFC_SOL_IOCB:
979                         /*
980                          * Idle exchange closed via ABTS from port.  No iocb
981                          * resources need to be recovered.
982                          */
983                         if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
984                                 printk(KERN_INFO "%s: IOCB cmd 0x%x processed. "
985                                        "Skipping completion\n", __FUNCTION__,
986                                        irsp->ulpCommand);
987                                 break;
988                         }
989
990                         rspiocbq.iocb.un.ulpWord[4] = irsp->un.ulpWord[4];
991                         rspiocbq.iocb.ulpStatus = irsp->ulpStatus;
992                         rspiocbq.iocb.ulpContext = irsp->ulpContext;
993                         rspiocbq.iocb.ulpIoTag = irsp->ulpIoTag;
994                         cmdiocbq = lpfc_sli_txcmpl_ring_iotag_lookup(phba,
995                                                                 pring,
996                                                                 &rspiocbq);
997                         if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
998                                 spin_unlock_irqrestore(
999                                        phba->host->host_lock, iflag);
1000                                 (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
1001                                                       &rspiocbq);
1002                                 spin_lock_irqsave(phba->host->host_lock,
1003                                                   iflag);
1004                         }
1005                         break;
1006                 default:
1007                         if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1008                                 char adaptermsg[LPFC_MAX_ADPTMSG];
1009                                 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
1010                                 memcpy(&adaptermsg[0], (uint8_t *) irsp,
1011                                        MAX_MSG_DATA);
1012                                 dev_warn(&((phba->pcidev)->dev), "lpfc%d: %s",
1013                                          phba->brd_no, adaptermsg);
1014                         } else {
1015                                 /* Unknown IOCB command */
1016                                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1017                                         "%d:0321 Unknown IOCB command "
1018                                         "Data: x%x, x%x x%x x%x x%x\n",
1019                                         phba->brd_no, type, irsp->ulpCommand,
1020                                         irsp->ulpStatus, irsp->ulpIoTag,
1021                                         irsp->ulpContext);
1022                         }
1023                         break;
1024                 }
1025
1026                 /*
1027                  * The response IOCB has been processed.  Update the ring
1028                  * pointer in SLIM.  If the port response put pointer has not
1029                  * been updated, sync the pgp->rspPutInx and fetch the new port
1030                  * response put pointer.
1031                  */
1032                 if (++pring->rspidx >= portRspMax)
1033                         pring->rspidx = 0;
1034
1035                 to_slim = phba->MBslimaddr +
1036                         (SLIMOFF + (pring->ringno * 2) + 1) * 4;
1037                 writeb(pring->rspidx, to_slim);
1038
1039                 if (pring->rspidx == portRspPut)
1040                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1041         }
1042
1043         if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) {
1044                 pring->stats.iocb_rsp_full++;
1045                 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1046                 writel(status, phba->CAregaddr);
1047                 readl(phba->CAregaddr);
1048         }
1049         if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1050                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1051                 pring->stats.iocb_cmd_empty++;
1052
1053                 /* Force update of the local copy of cmdGetInx */
1054                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1055                 lpfc_sli_resume_iocb(phba, pring);
1056
1057                 if ((pring->lpfc_sli_cmd_available))
1058                         (pring->lpfc_sli_cmd_available) (phba, pring);
1059
1060         }
1061
1062         spin_unlock_irqrestore(phba->host->host_lock, iflag);
1063         return rc;
1064 }
1065
1066
1067 int
1068 lpfc_sli_handle_slow_ring_event(struct lpfc_hba * phba,
1069                            struct lpfc_sli_ring * pring, uint32_t mask)
1070 {
1071         IOCB_t *entry;
1072         IOCB_t *irsp = NULL;
1073         struct lpfc_iocbq *rspiocbp = NULL;
1074         struct lpfc_iocbq *next_iocb;
1075         struct lpfc_iocbq *cmdiocbp;
1076         struct lpfc_iocbq *saveq;
1077         struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
1078         HGP *hgp;
1079         PGP *pgp;
1080         MAILBOX_t *mbox;
1081         uint8_t iocb_cmd_type;
1082         lpfc_iocb_type type;
1083         uint32_t status, free_saveq;
1084         uint32_t portRspPut, portRspMax;
1085         int rc = 1;
1086         unsigned long iflag;
1087         void __iomem  *to_slim;
1088
1089         spin_lock_irqsave(phba->host->host_lock, iflag);
1090         pring->stats.iocb_event++;
1091
1092         /* The driver assumes SLI-2 mode */
1093         mbox = (MAILBOX_t *) phba->sli.MBhostaddr;
1094         pgp = (PGP *) & mbox->us.s2.port[pring->ringno];
1095         hgp = (HGP *) & mbox->us.s2.host[pring->ringno];
1096
1097         /*
1098          * The next available response entry should never exceed the maximum
1099          * entries.  If it does, treat it as an adapter hardware error.
1100          */
1101         portRspMax = pring->numRiocb;
1102         portRspPut = le32_to_cpu(pgp->rspPutInx);
1103         if (portRspPut >= portRspMax) {
1104                 /*
1105                  * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
1106                  * rsp ring <portRspMax>
1107                  */
1108                 lpfc_printf_log(phba,
1109                                 KERN_ERR,
1110                                 LOG_SLI,
1111                                 "%d:0312 Ring %d handler: portRspPut %d "
1112                                 "is bigger then rsp ring %d\n",
1113                                 phba->brd_no,
1114                                 pring->ringno, portRspPut, portRspMax);
1115
1116                 phba->hba_state = LPFC_HBA_ERROR;
1117                 spin_unlock_irqrestore(phba->host->host_lock, iflag);
1118
1119                 phba->work_hs = HS_FFER3;
1120                 lpfc_handle_eratt(phba);
1121
1122                 return 1;
1123         }
1124
1125         rmb();
1126         lpfc_iocb_list = &phba->lpfc_iocb_list;
1127         while (pring->rspidx != portRspPut) {
1128                 /*
1129                  * Build a completion list and call the appropriate handler.
1130                  * The process is to get the next available response iocb, get
1131                  * a free iocb from the list, copy the response data into the
1132                  * free iocb, insert to the continuation list, and update the
1133                  * next response index to slim.  This process makes response
1134                  * iocb's in the ring available to DMA as fast as possible but
1135                  * pays a penalty for a copy operation.  Since the iocb is
1136                  * only 32 bytes, this penalty is considered small relative to
1137                  * the PCI reads for register values and a slim write.  When
1138                  * the ulpLe field is set, the entire Command has been
1139                  * received.
1140                  */
1141                 entry = IOCB_ENTRY(pring->rspringaddr, pring->rspidx);
1142                 list_remove_head(lpfc_iocb_list, rspiocbp, struct lpfc_iocbq,
1143                                  list);
1144                 if (rspiocbp == NULL) {
1145                         printk(KERN_ERR "%s: out of buffers! Failing "
1146                                "completion.\n", __FUNCTION__);
1147                         break;
1148                 }
1149
1150                 lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb, sizeof (IOCB_t));
1151                 irsp = &rspiocbp->iocb;
1152
1153                 if (++pring->rspidx >= portRspMax)
1154                         pring->rspidx = 0;
1155
1156                 to_slim = phba->MBslimaddr + (SLIMOFF + (pring->ringno * 2)
1157                                               + 1) * 4;
1158                 writeb(pring->rspidx, to_slim);
1159
1160                 if (list_empty(&(pring->iocb_continueq))) {
1161                         list_add(&rspiocbp->list, &(pring->iocb_continueq));
1162                 } else {
1163                         list_add_tail(&rspiocbp->list,
1164                                       &(pring->iocb_continueq));
1165                 }
1166
1167                 pring->iocb_continueq_cnt++;
1168                 if (irsp->ulpLe) {
1169                         /*
1170                          * By default, the driver expects to free all resources
1171                          * associated with this iocb completion.
1172                          */
1173                         free_saveq = 1;
1174                         saveq = list_get_first(&pring->iocb_continueq,
1175                                                struct lpfc_iocbq, list);
1176                         irsp = &(saveq->iocb);
1177                         list_del_init(&pring->iocb_continueq);
1178                         pring->iocb_continueq_cnt = 0;
1179
1180                         pring->stats.iocb_rsp++;
1181
1182                         if (irsp->ulpStatus) {
1183                                 /* Rsp ring <ringno> error: IOCB */
1184                                 lpfc_printf_log(phba,
1185                                         KERN_WARNING,
1186                                         LOG_SLI,
1187                                         "%d:0328 Rsp Ring %d error: IOCB Data: "
1188                                         "x%x x%x x%x x%x x%x x%x x%x x%x\n",
1189                                         phba->brd_no,
1190                                         pring->ringno,
1191                                         irsp->un.ulpWord[0],
1192                                         irsp->un.ulpWord[1],
1193                                         irsp->un.ulpWord[2],
1194                                         irsp->un.ulpWord[3],
1195                                         irsp->un.ulpWord[4],
1196                                         irsp->un.ulpWord[5],
1197                                         *(((uint32_t *) irsp) + 6),
1198                                         *(((uint32_t *) irsp) + 7));
1199                         }
1200
1201                         /*
1202                          * Fetch the IOCB command type and call the correct
1203                          * completion routine.  Solicited and Unsolicited
1204                          * IOCBs on the ELS ring get freed back to the
1205                          * lpfc_iocb_list by the discovery kernel thread.
1206                          */
1207                         iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK;
1208                         type = lpfc_sli_iocb_cmd_type(iocb_cmd_type);
1209                         if (type == LPFC_SOL_IOCB) {
1210                                 spin_unlock_irqrestore(phba->host->host_lock,
1211                                                        iflag);
1212                                 rc = lpfc_sli_process_sol_iocb(phba, pring,
1213                                         saveq);
1214                                 spin_lock_irqsave(phba->host->host_lock, iflag);
1215                         } else if (type == LPFC_UNSOL_IOCB) {
1216                                 spin_unlock_irqrestore(phba->host->host_lock,
1217                                                        iflag);
1218                                 rc = lpfc_sli_process_unsol_iocb(phba, pring,
1219                                         saveq);
1220                                 spin_lock_irqsave(phba->host->host_lock, iflag);
1221                         } else if (type == LPFC_ABORT_IOCB) {
1222                                 if ((irsp->ulpCommand != CMD_XRI_ABORTED_CX) &&
1223                                     ((cmdiocbp =
1224                                       lpfc_sli_txcmpl_ring_search_slow(pring,
1225                                                 saveq)))) {
1226                                         /* Call the specified completion
1227                                            routine */
1228                                         if (cmdiocbp->iocb_cmpl) {
1229                                                 spin_unlock_irqrestore(
1230                                                        phba->host->host_lock,
1231                                                        iflag);
1232                                                 (cmdiocbp->iocb_cmpl) (phba,
1233                                                              cmdiocbp, saveq);
1234                                                 spin_lock_irqsave(
1235                                                           phba->host->host_lock,
1236                                                           iflag);
1237                                         } else {
1238                                                 list_add_tail(&cmdiocbp->list,
1239                                                                 lpfc_iocb_list);
1240                                         }
1241                                 }
1242                         } else if (type == LPFC_UNKNOWN_IOCB) {
1243                                 if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1244
1245                                         char adaptermsg[LPFC_MAX_ADPTMSG];
1246
1247                                         memset(adaptermsg, 0,
1248                                                LPFC_MAX_ADPTMSG);
1249                                         memcpy(&adaptermsg[0], (uint8_t *) irsp,
1250                                                MAX_MSG_DATA);
1251                                         dev_warn(&((phba->pcidev)->dev),
1252                                                  "lpfc%d: %s",
1253                                                  phba->brd_no, adaptermsg);
1254                                 } else {
1255                                         /* Unknown IOCB command */
1256                                         lpfc_printf_log(phba,
1257                                                 KERN_ERR,
1258                                                 LOG_SLI,
1259                                                 "%d:0321 Unknown IOCB command "
1260                                                 "Data: x%x x%x x%x x%x\n",
1261                                                 phba->brd_no,
1262                                                 irsp->ulpCommand,
1263                                                 irsp->ulpStatus,
1264                                                 irsp->ulpIoTag,
1265                                                 irsp->ulpContext);
1266                                 }
1267                         }
1268
1269                         if (free_saveq) {
1270                                 if (!list_empty(&saveq->list)) {
1271                                         list_for_each_entry_safe(rspiocbp,
1272                                                                  next_iocb,
1273                                                                  &saveq->list,
1274                                                                  list) {
1275                                                 list_add_tail(&rspiocbp->list,
1276                                                               lpfc_iocb_list);
1277                                         }
1278                                 }
1279
1280                                 list_add_tail(&saveq->list, lpfc_iocb_list);
1281                         }
1282                 }
1283
1284                 /*
1285                  * If the port response put pointer has not been updated, sync
1286                  * the pgp->rspPutInx in the MAILBOX_tand fetch the new port
1287                  * response put pointer.
1288                  */
1289                 if (pring->rspidx == portRspPut) {
1290                         portRspPut = le32_to_cpu(pgp->rspPutInx);
1291                 }
1292         } /* while (pring->rspidx != portRspPut) */
1293
1294         if ((rspiocbp != 0) && (mask & HA_R0RE_REQ)) {
1295                 /* At least one response entry has been freed */
1296                 pring->stats.iocb_rsp_full++;
1297                 /* SET RxRE_RSP in Chip Att register */
1298                 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1299                 writel(status, phba->CAregaddr);
1300                 readl(phba->CAregaddr); /* flush */
1301         }
1302         if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1303                 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1304                 pring->stats.iocb_cmd_empty++;
1305
1306                 /* Force update of the local copy of cmdGetInx */
1307                 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1308                 lpfc_sli_resume_iocb(phba, pring);
1309
1310                 if ((pring->lpfc_sli_cmd_available))
1311                         (pring->lpfc_sli_cmd_available) (phba, pring);
1312
1313         }
1314
1315         spin_unlock_irqrestore(phba->host->host_lock, iflag);
1316         return rc;
1317 }
1318
1319 int
1320 lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1321 {
1322         struct lpfc_iocbq *iocb, *next_iocb;
1323         IOCB_t *icmd = NULL, *cmd = NULL;
1324         int errcnt;
1325         uint16_t iotag;
1326
1327         errcnt = 0;
1328
1329         /* Error everything on txq and txcmplq
1330          * First do the txq.
1331          */
1332         spin_lock_irq(phba->host->host_lock);
1333         list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
1334                 list_del_init(&iocb->list);
1335                 if (iocb->iocb_cmpl) {
1336                         icmd = &iocb->iocb;
1337                         icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1338                         icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1339                         spin_unlock_irq(phba->host->host_lock);
1340                         (iocb->iocb_cmpl) (phba, iocb, iocb);
1341                         spin_lock_irq(phba->host->host_lock);
1342                 } else {
1343                         list_add_tail(&iocb->list, &phba->lpfc_iocb_list);
1344                 }
1345         }
1346         pring->txq_cnt = 0;
1347         INIT_LIST_HEAD(&(pring->txq));
1348
1349         /* Next issue ABTS for everything on the txcmplq */
1350         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
1351                 cmd = &iocb->iocb;
1352
1353                 /*
1354                  * Imediate abort of IOCB, clear fast_lookup entry,
1355                  * if any, deque and call compl
1356                  */
1357                 iotag = cmd->ulpIoTag;
1358                 if (iotag && pring->fast_lookup &&
1359                     (iotag < pring->fast_iotag))
1360                         pring->fast_lookup[iotag] = NULL;
1361
1362                 list_del_init(&iocb->list);
1363                 pring->txcmplq_cnt--;
1364
1365                 if (iocb->iocb_cmpl) {
1366                         cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1367                         cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1368                         spin_unlock_irq(phba->host->host_lock);
1369                         (iocb->iocb_cmpl) (phba, iocb, iocb);
1370                         spin_lock_irq(phba->host->host_lock);
1371                 } else {
1372                         list_add_tail(&iocb->list, &phba->lpfc_iocb_list);
1373                 }
1374         }
1375
1376         INIT_LIST_HEAD(&pring->txcmplq);
1377         pring->txcmplq_cnt = 0;
1378         spin_unlock_irq(phba->host->host_lock);
1379
1380         return errcnt;
1381 }
1382
1383 /******************************************************************************
1384 * lpfc_sli_send_reset
1385 *
1386 * Note: After returning from this function, the HBA cannot be accessed for
1387 * 1 ms. Since we do not wish to delay in interrupt context, it is the
1388 * responsibility of the caller to perform the mdelay(1) and flush via readl().
1389 ******************************************************************************/
1390 static int
1391 lpfc_sli_send_reset(struct lpfc_hba * phba, uint16_t skip_post)
1392 {
1393         MAILBOX_t *swpmb;
1394         volatile uint32_t word0;
1395         void __iomem *to_slim;
1396         unsigned long flags = 0;
1397
1398         spin_lock_irqsave(phba->host->host_lock, flags);
1399
1400         /* A board reset must use REAL SLIM. */
1401         phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE;
1402
1403         word0 = 0;
1404         swpmb = (MAILBOX_t *) & word0;
1405         swpmb->mbxCommand = MBX_RESTART;
1406         swpmb->mbxHc = 1;
1407
1408         to_slim = phba->MBslimaddr;
1409         writel(*(uint32_t *) swpmb, to_slim);
1410         readl(to_slim); /* flush */
1411
1412         /* Only skip post after fc_ffinit is completed */
1413         if (skip_post) {
1414                 word0 = 1;      /* This is really setting up word1 */
1415         } else {
1416                 word0 = 0;      /* This is really setting up word1 */
1417         }
1418         to_slim = phba->MBslimaddr + sizeof (uint32_t);
1419         writel(*(uint32_t *) swpmb, to_slim);
1420         readl(to_slim); /* flush */
1421
1422         /* Turn off parity checking and serr during the physical reset */
1423         pci_read_config_word(phba->pcidev, PCI_COMMAND, &phba->pci_cfg_value);
1424         pci_write_config_word(phba->pcidev, PCI_COMMAND,
1425                               (phba->pci_cfg_value &
1426                                ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
1427
1428         writel(HC_INITFF, phba->HCregaddr);
1429
1430         phba->hba_state = LPFC_INIT_START;
1431         spin_unlock_irqrestore(phba->host->host_lock, flags);
1432
1433         return 0;
1434 }
1435
1436 static int
1437 lpfc_sli_brdreset(struct lpfc_hba * phba, uint16_t skip_post)
1438 {
1439         struct lpfc_sli_ring *pring;
1440         int i;
1441         struct lpfc_dmabuf *mp, *next_mp;
1442         unsigned long flags = 0;
1443
1444         lpfc_sli_send_reset(phba, skip_post);
1445         mdelay(1);
1446
1447         spin_lock_irqsave(phba->host->host_lock, flags);
1448         /* Risk the write on flush case ie no delay after the readl */
1449         readl(phba->HCregaddr); /* flush */
1450         /* Now toggle INITFF bit set by lpfc_sli_send_reset */
1451         writel(0, phba->HCregaddr);
1452         readl(phba->HCregaddr); /* flush */
1453
1454         /* Restore PCI cmd register */
1455         pci_write_config_word(phba->pcidev, PCI_COMMAND, phba->pci_cfg_value);
1456
1457         /* perform board reset */
1458         phba->fc_eventTag = 0;
1459         phba->fc_myDID = 0;
1460         phba->fc_prevDID = Mask_DID;
1461
1462         /* Reset HBA */
1463         lpfc_printf_log(phba,
1464                 KERN_INFO,
1465                 LOG_SLI,
1466                 "%d:0325 Reset HBA Data: x%x x%x x%x\n",
1467                 phba->brd_no,
1468                 phba->hba_state,
1469                 phba->sli.sli_flag,
1470                 skip_post);
1471
1472         /* Initialize relevant SLI info */
1473         for (i = 0; i < phba->sli.num_rings; i++) {
1474                 pring = &phba->sli.ring[i];
1475                 pring->flag = 0;
1476                 pring->rspidx = 0;
1477                 pring->next_cmdidx  = 0;
1478                 pring->local_getidx = 0;
1479                 pring->cmdidx = 0;
1480                 pring->missbufcnt = 0;
1481         }
1482         spin_unlock_irqrestore(phba->host->host_lock, flags);
1483
1484         if (skip_post) {
1485                 mdelay(100);
1486         } else {
1487                 mdelay(2000);
1488         }
1489
1490         spin_lock_irqsave(phba->host->host_lock, flags);
1491         /* Cleanup preposted buffers on the ELS ring */
1492         pring = &phba->sli.ring[LPFC_ELS_RING];
1493         list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
1494                 list_del(&mp->list);
1495                 pring->postbufq_cnt--;
1496                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1497                 kfree(mp);
1498         }
1499         spin_unlock_irqrestore(phba->host->host_lock, flags);
1500
1501         for (i = 0; i < phba->sli.num_rings; i++)
1502                 lpfc_sli_abort_iocb_ring(phba, &phba->sli.ring[i]);
1503
1504         return 0;
1505 }
1506
1507 static int
1508 lpfc_sli_chipset_init(struct lpfc_hba *phba)
1509 {
1510         uint32_t status, i = 0;
1511
1512         /* Read the HBA Host Status Register */
1513         status = readl(phba->HSregaddr);
1514
1515         /* Check status register to see what current state is */
1516         i = 0;
1517         while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) {
1518
1519                 /* Check every 100ms for 5 retries, then every 500ms for 5, then
1520                  * every 2.5 sec for 5, then reset board and every 2.5 sec for
1521                  * 4.
1522                  */
1523                 if (i++ >= 20) {
1524                         /* Adapter failed to init, timeout, status reg
1525                            <status> */
1526                         lpfc_printf_log(phba,
1527                                         KERN_ERR,
1528                                         LOG_INIT,
1529                                         "%d:0436 Adapter failed to init, "
1530                                         "timeout, status reg x%x\n",
1531                                         phba->brd_no,
1532                                         status);
1533                         phba->hba_state = LPFC_HBA_ERROR;
1534                         return -ETIMEDOUT;
1535                 }
1536
1537                 /* Check to see if any errors occurred during init */
1538                 if (status & HS_FFERM) {
1539                         /* ERROR: During chipset initialization */
1540                         /* Adapter failed to init, chipset, status reg
1541                            <status> */
1542                         lpfc_printf_log(phba,
1543                                         KERN_ERR,
1544                                         LOG_INIT,
1545                                         "%d:0437 Adapter failed to init, "
1546                                         "chipset, status reg x%x\n",
1547                                         phba->brd_no,
1548                                         status);
1549                         phba->hba_state = LPFC_HBA_ERROR;
1550                         return -EIO;
1551                 }
1552
1553                 if (i <= 5) {
1554                         msleep(10);
1555                 } else if (i <= 10) {
1556                         msleep(500);
1557                 } else {
1558                         msleep(2500);
1559                 }
1560
1561                 if (i == 15) {
1562                         lpfc_sli_brdreset(phba, 0);
1563                 }
1564                 /* Read the HBA Host Status Register */
1565                 status = readl(phba->HSregaddr);
1566         }
1567
1568         /* Check to see if any errors occurred during init */
1569         if (status & HS_FFERM) {
1570                 /* ERROR: During chipset initialization */
1571                 /* Adapter failed to init, chipset, status reg <status> */
1572                 lpfc_printf_log(phba,
1573                                 KERN_ERR,
1574                                 LOG_INIT,
1575                                 "%d:0438 Adapter failed to init, chipset, "
1576                                 "status reg x%x\n",
1577                                 phba->brd_no,
1578                                 status);
1579                 phba->hba_state = LPFC_HBA_ERROR;
1580                 return -EIO;
1581         }
1582
1583         /* Clear all interrupt enable conditions */
1584         writel(0, phba->HCregaddr);
1585         readl(phba->HCregaddr); /* flush */
1586
1587         /* setup host attn register */
1588         writel(0xffffffff, phba->HAregaddr);
1589         readl(phba->HAregaddr); /* flush */
1590         return 0;
1591 }
1592
1593 int
1594 lpfc_sli_hba_setup(struct lpfc_hba * phba)
1595 {
1596         LPFC_MBOXQ_t *pmb;
1597         uint32_t resetcount = 0, rc = 0, done = 0;
1598
1599         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1600         if (!pmb) {
1601                 phba->hba_state = LPFC_HBA_ERROR;
1602                 return -ENOMEM;
1603         }
1604
1605         while (resetcount < 2 && !done) {
1606                 phba->hba_state = 0;
1607                 lpfc_sli_brdreset(phba, 0);
1608                 msleep(2500);
1609                 rc = lpfc_sli_chipset_init(phba);
1610                 if (rc)
1611                         break;
1612
1613                 resetcount++;
1614
1615         /* Call pre CONFIG_PORT mailbox command initialization.  A value of 0
1616          * means the call was successful.  Any other nonzero value is a failure,
1617          * but if ERESTART is returned, the driver may reset the HBA and try
1618          * again.
1619          */
1620                 rc = lpfc_config_port_prep(phba);
1621                 if (rc == -ERESTART) {
1622                         phba->hba_state = 0;
1623                         continue;
1624                 } else if (rc) {
1625                         break;
1626                 }
1627
1628                 phba->hba_state = LPFC_INIT_MBX_CMDS;
1629                 lpfc_config_port(phba, pmb);
1630                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
1631                 if (rc == MBX_SUCCESS)
1632                         done = 1;
1633                 else {
1634                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1635                                 "%d:0442 Adapter failed to init, mbxCmd x%x "
1636                                 "CONFIG_PORT, mbxStatus x%x Data: x%x\n",
1637                                 phba->brd_no, pmb->mb.mbxCommand,
1638                                 pmb->mb.mbxStatus, 0);
1639                         phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE;
1640                 }
1641         }
1642         if (!done)
1643                 goto lpfc_sli_hba_setup_error;
1644
1645         rc = lpfc_sli_ring_map(phba, pmb);
1646
1647         if (rc)
1648                 goto lpfc_sli_hba_setup_error;
1649
1650         phba->sli.sli_flag |= LPFC_PROCESS_LA;
1651
1652         rc = lpfc_config_port_post(phba);
1653         if (rc)
1654                 goto lpfc_sli_hba_setup_error;
1655
1656         goto lpfc_sli_hba_setup_exit;
1657 lpfc_sli_hba_setup_error:
1658         phba->hba_state = LPFC_HBA_ERROR;
1659 lpfc_sli_hba_setup_exit:
1660         mempool_free(pmb, phba->mbox_mem_pool);
1661         return rc;
1662 }
1663
1664 static void
1665 lpfc_mbox_abort(struct lpfc_hba * phba)
1666 {
1667         LPFC_MBOXQ_t *pmbox;
1668         MAILBOX_t *mb;
1669
1670         if (phba->sli.mbox_active) {
1671                 del_timer_sync(&phba->sli.mbox_tmo);
1672                 phba->work_hba_events &= ~WORKER_MBOX_TMO;
1673                 pmbox = phba->sli.mbox_active;
1674                 mb = &pmbox->mb;
1675                 phba->sli.mbox_active = NULL;
1676                 if (pmbox->mbox_cmpl) {
1677                         mb->mbxStatus = MBX_NOT_FINISHED;
1678                         (pmbox->mbox_cmpl) (phba, pmbox);
1679                 }
1680                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1681         }
1682
1683         /* Abort all the non active mailbox commands. */
1684         spin_lock_irq(phba->host->host_lock);
1685         pmbox = lpfc_mbox_get(phba);
1686         while (pmbox) {
1687                 mb = &pmbox->mb;
1688                 if (pmbox->mbox_cmpl) {
1689                         mb->mbxStatus = MBX_NOT_FINISHED;
1690                         spin_unlock_irq(phba->host->host_lock);
1691                         (pmbox->mbox_cmpl) (phba, pmbox);
1692                         spin_lock_irq(phba->host->host_lock);
1693                 }
1694                 pmbox = lpfc_mbox_get(phba);
1695         }
1696         spin_unlock_irq(phba->host->host_lock);
1697         return;
1698 }
1699
1700 /*! lpfc_mbox_timeout
1701  *
1702  * \pre
1703  * \post
1704  * \param hba Pointer to per struct lpfc_hba structure
1705  * \param l1  Pointer to the driver's mailbox queue.
1706  * \return
1707  *   void
1708  *
1709  * \b Description:
1710  *
1711  * This routine handles mailbox timeout events at timer interrupt context.
1712  */
1713 void
1714 lpfc_mbox_timeout(unsigned long ptr)
1715 {
1716         struct lpfc_hba *phba;
1717         unsigned long iflag;
1718
1719         phba = (struct lpfc_hba *)ptr;
1720         spin_lock_irqsave(phba->host->host_lock, iflag);
1721         if (!(phba->work_hba_events & WORKER_MBOX_TMO)) {
1722                 phba->work_hba_events |= WORKER_MBOX_TMO;
1723                 if (phba->work_wait)
1724                         wake_up(phba->work_wait);
1725         }
1726         spin_unlock_irqrestore(phba->host->host_lock, iflag);
1727 }
1728
1729 void
1730 lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
1731 {
1732         LPFC_MBOXQ_t *pmbox;
1733         MAILBOX_t *mb;
1734
1735         spin_lock_irq(phba->host->host_lock);
1736         if (!(phba->work_hba_events & WORKER_MBOX_TMO)) {
1737                 spin_unlock_irq(phba->host->host_lock);
1738                 return;
1739         }
1740
1741         pmbox = phba->sli.mbox_active;
1742         mb = &pmbox->mb;
1743
1744         /* Mbox cmd <mbxCommand> timeout */
1745         lpfc_printf_log(phba,
1746                 KERN_ERR,
1747                 LOG_MBOX | LOG_SLI,
1748                 "%d:0310 Mailbox command x%x timeout Data: x%x x%x x%p\n",
1749                 phba->brd_no,
1750                 mb->mbxCommand,
1751                 phba->hba_state,
1752                 phba->sli.sli_flag,
1753                 phba->sli.mbox_active);
1754
1755         if (phba->sli.mbox_active == pmbox) {
1756                 phba->sli.mbox_active = NULL;
1757                 if (pmbox->mbox_cmpl) {
1758                         mb->mbxStatus = MBX_NOT_FINISHED;
1759                         spin_unlock_irq(phba->host->host_lock);
1760                         (pmbox->mbox_cmpl) (phba, pmbox);
1761                         spin_lock_irq(phba->host->host_lock);
1762                 }
1763                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1764         }
1765
1766         spin_unlock_irq(phba->host->host_lock);
1767         lpfc_mbox_abort(phba);
1768         return;
1769 }
1770
1771 int
1772 lpfc_sli_issue_mbox(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmbox, uint32_t flag)
1773 {
1774         MAILBOX_t *mbox;
1775         MAILBOX_t *mb;
1776         struct lpfc_sli *psli;
1777         uint32_t status, evtctr;
1778         uint32_t ha_copy;
1779         int i;
1780         unsigned long drvr_flag = 0;
1781         volatile uint32_t word0, ldata;
1782         void __iomem *to_slim;
1783
1784         psli = &phba->sli;
1785
1786         spin_lock_irqsave(phba->host->host_lock, drvr_flag);
1787
1788
1789         mb = &pmbox->mb;
1790         status = MBX_SUCCESS;
1791
1792         if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
1793                 /* Polling for a mbox command when another one is already active
1794                  * is not allowed in SLI. Also, the driver must have established
1795                  * SLI2 mode to queue and process multiple mbox commands.
1796                  */
1797
1798                 if (flag & MBX_POLL) {
1799                         spin_unlock_irqrestore(phba->host->host_lock,
1800                                                drvr_flag);
1801
1802                         /* Mbox command <mbxCommand> cannot issue */
1803                         LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
1804                         return (MBX_NOT_FINISHED);
1805                 }
1806
1807                 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) {
1808                         spin_unlock_irqrestore(phba->host->host_lock,
1809                                                drvr_flag);
1810                         /* Mbox command <mbxCommand> cannot issue */
1811                         LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
1812                         return (MBX_NOT_FINISHED);
1813                 }
1814
1815                 /* Handle STOP IOCB processing flag. This is only meaningful
1816                  * if we are not polling for mbox completion.
1817                  */
1818                 if (flag & MBX_STOP_IOCB) {
1819                         flag &= ~MBX_STOP_IOCB;
1820                         /* Now flag each ring */
1821                         for (i = 0; i < psli->num_rings; i++) {
1822                                 /* If the ring is active, flag it */
1823                                 if (psli->ring[i].cmdringaddr) {
1824                                         psli->ring[i].flag |=
1825                                             LPFC_STOP_IOCB_MBX;
1826                                 }
1827                         }
1828                 }
1829
1830                 /* Another mailbox command is still being processed, queue this
1831                  * command to be processed later.
1832                  */
1833                 lpfc_mbox_put(phba, pmbox);
1834
1835                 /* Mbox cmd issue - BUSY */
1836                 lpfc_printf_log(phba,
1837                         KERN_INFO,
1838                         LOG_MBOX | LOG_SLI,
1839                         "%d:0308 Mbox cmd issue - BUSY Data: x%x x%x x%x x%x\n",
1840                         phba->brd_no,
1841                         mb->mbxCommand,
1842                         phba->hba_state,
1843                         psli->sli_flag,
1844                         flag);
1845
1846                 psli->slistat.mbox_busy++;
1847                 spin_unlock_irqrestore(phba->host->host_lock,
1848                                        drvr_flag);
1849
1850                 return (MBX_BUSY);
1851         }
1852
1853         /* Handle STOP IOCB processing flag. This is only meaningful
1854          * if we are not polling for mbox completion.
1855          */
1856         if (flag & MBX_STOP_IOCB) {
1857                 flag &= ~MBX_STOP_IOCB;
1858                 if (flag == MBX_NOWAIT) {
1859                         /* Now flag each ring */
1860                         for (i = 0; i < psli->num_rings; i++) {
1861                                 /* If the ring is active, flag it */
1862                                 if (psli->ring[i].cmdringaddr) {
1863                                         psli->ring[i].flag |=
1864                                             LPFC_STOP_IOCB_MBX;
1865                                 }
1866                         }
1867                 }
1868         }
1869
1870         psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
1871
1872         /* If we are not polling, we MUST be in SLI2 mode */
1873         if (flag != MBX_POLL) {
1874                 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) {
1875                         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1876                         spin_unlock_irqrestore(phba->host->host_lock,
1877                                                drvr_flag);
1878                         /* Mbox command <mbxCommand> cannot issue */
1879                         LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag);
1880                         return (MBX_NOT_FINISHED);
1881                 }
1882                 /* timeout active mbox command */
1883                 mod_timer(&psli->mbox_tmo, jiffies + HZ * LPFC_MBOX_TMO);
1884         }
1885
1886         /* Mailbox cmd <cmd> issue */
1887         lpfc_printf_log(phba,
1888                 KERN_INFO,
1889                 LOG_MBOX | LOG_SLI,
1890                 "%d:0309 Mailbox cmd x%x issue Data: x%x x%x x%x\n",
1891                 phba->brd_no,
1892                 mb->mbxCommand,
1893                 phba->hba_state,
1894                 psli->sli_flag,
1895                 flag);
1896
1897         psli->slistat.mbox_cmd++;
1898         evtctr = psli->slistat.mbox_event;
1899
1900         /* next set own bit for the adapter and copy over command word */
1901         mb->mbxOwner = OWN_CHIP;
1902
1903         if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
1904
1905                 /* First copy command data to host SLIM area */
1906                 mbox = (MAILBOX_t *) psli->MBhostaddr;
1907                 lpfc_sli_pcimem_bcopy(mb, mbox, MAILBOX_CMD_SIZE);
1908         } else {
1909                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
1910                         /* copy command data into host mbox for cmpl */
1911                         mbox = (MAILBOX_t *) psli->MBhostaddr;
1912                         lpfc_sli_pcimem_bcopy(mb, mbox, MAILBOX_CMD_SIZE);
1913                 }
1914
1915                 /* First copy mbox command data to HBA SLIM, skip past first
1916                    word */
1917                 to_slim = phba->MBslimaddr + sizeof (uint32_t);
1918                 lpfc_memcpy_to_slim(to_slim, &mb->un.varWords[0],
1919                             MAILBOX_CMD_SIZE - sizeof (uint32_t));
1920
1921                 /* Next copy over first word, with mbxOwner set */
1922                 ldata = *((volatile uint32_t *)mb);
1923                 to_slim = phba->MBslimaddr;
1924                 writel(ldata, to_slim);
1925                 readl(to_slim); /* flush */
1926
1927                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
1928                         /* switch over to host mailbox */
1929                         psli->sli_flag |= LPFC_SLI2_ACTIVE;
1930                 }
1931         }
1932
1933         wmb();
1934         /* interrupt board to doit right away */
1935         writel(CA_MBATT, phba->CAregaddr);
1936         readl(phba->CAregaddr); /* flush */
1937
1938         switch (flag) {
1939         case MBX_NOWAIT:
1940                 /* Don't wait for it to finish, just return */
1941                 psli->mbox_active = pmbox;
1942                 break;
1943
1944         case MBX_POLL:
1945                 i = 0;
1946                 psli->mbox_active = NULL;
1947                 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
1948                         /* First read mbox status word */
1949                         mbox = (MAILBOX_t *) psli->MBhostaddr;
1950                         word0 = *((volatile uint32_t *)mbox);
1951                         word0 = le32_to_cpu(word0);
1952                 } else {
1953                         /* First read mbox status word */
1954                         word0 = readl(phba->MBslimaddr);
1955                 }
1956
1957                 /* Read the HBA Host Attention Register */
1958                 ha_copy = readl(phba->HAregaddr);
1959
1960                 /* Wait for command to complete */
1961                 while (((word0 & OWN_CHIP) == OWN_CHIP)
1962                        || !(ha_copy & HA_MBATT)) {
1963                         if (i++ >= 100) {
1964                                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1965                                 spin_unlock_irqrestore(phba->host->host_lock,
1966                                                        drvr_flag);
1967                                 return (MBX_NOT_FINISHED);
1968                         }
1969
1970                         /* Check if we took a mbox interrupt while we were
1971                            polling */
1972                         if (((word0 & OWN_CHIP) != OWN_CHIP)
1973                             && (evtctr != psli->slistat.mbox_event))
1974                                 break;
1975
1976                         spin_unlock_irqrestore(phba->host->host_lock,
1977                                                drvr_flag);
1978
1979                         /* Can be in interrupt context, do not sleep */
1980                         /* (or might be called with interrupts disabled) */
1981                         mdelay(i);
1982
1983                         spin_lock_irqsave(phba->host->host_lock, drvr_flag);
1984
1985                         if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
1986                                 /* First copy command data */
1987                                 mbox = (MAILBOX_t *) psli->MBhostaddr;
1988                                 word0 = *((volatile uint32_t *)mbox);
1989                                 word0 = le32_to_cpu(word0);
1990                                 if (mb->mbxCommand == MBX_CONFIG_PORT) {
1991                                         MAILBOX_t *slimmb;
1992                                         volatile uint32_t slimword0;
1993                                         /* Check real SLIM for any errors */
1994                                         slimword0 = readl(phba->MBslimaddr);
1995                                         slimmb = (MAILBOX_t *) & slimword0;
1996                                         if (((slimword0 & OWN_CHIP) != OWN_CHIP)
1997                                             && slimmb->mbxStatus) {
1998                                                 psli->sli_flag &=
1999                                                     ~LPFC_SLI2_ACTIVE;
2000                                                 word0 = slimword0;
2001                                         }
2002                                 }
2003                         } else {
2004                                 /* First copy command data */
2005                                 word0 = readl(phba->MBslimaddr);
2006                         }
2007                         /* Read the HBA Host Attention Register */
2008                         ha_copy = readl(phba->HAregaddr);
2009                 }
2010
2011                 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2012                         /* First copy command data */
2013                         mbox = (MAILBOX_t *) psli->MBhostaddr;
2014                         /* copy results back to user */
2015                         lpfc_sli_pcimem_bcopy(mbox, mb, MAILBOX_CMD_SIZE);
2016                 } else {
2017                         /* First copy command data */
2018                         lpfc_memcpy_from_slim(mb, phba->MBslimaddr,
2019                                                         MAILBOX_CMD_SIZE);
2020                         if ((mb->mbxCommand == MBX_DUMP_MEMORY) &&
2021                                 pmbox->context2) {
2022                                 lpfc_memcpy_from_slim((void *)pmbox->context2,
2023                                       phba->MBslimaddr + DMP_RSP_OFFSET,
2024                                                       mb->un.varDmp.word_cnt);
2025                         }
2026                 }
2027
2028                 writel(HA_MBATT, phba->HAregaddr);
2029                 readl(phba->HAregaddr); /* flush */
2030
2031                 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2032                 status = mb->mbxStatus;
2033         }
2034
2035         spin_unlock_irqrestore(phba->host->host_lock, drvr_flag);
2036         return (status);
2037 }
2038
2039 static int
2040 lpfc_sli_ringtx_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
2041                     struct lpfc_iocbq * piocb)
2042 {
2043         /* Insert the caller's iocb in the txq tail for later processing. */
2044         list_add_tail(&piocb->list, &pring->txq);
2045         pring->txq_cnt++;
2046         return (0);
2047 }
2048
2049 static struct lpfc_iocbq *
2050 lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2051                    struct lpfc_iocbq ** piocb)
2052 {
2053         struct lpfc_iocbq * nextiocb;
2054
2055         nextiocb = lpfc_sli_ringtx_get(phba, pring);
2056         if (!nextiocb) {
2057                 nextiocb = *piocb;
2058                 *piocb = NULL;
2059         }
2060
2061         return nextiocb;
2062 }
2063
2064 int
2065 lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2066                     struct lpfc_iocbq *piocb, uint32_t flag)
2067 {
2068         struct lpfc_iocbq *nextiocb;
2069         IOCB_t *iocb;
2070
2071         /*
2072          * We should never get an IOCB if we are in a < LINK_DOWN state
2073          */
2074         if (unlikely(phba->hba_state < LPFC_LINK_DOWN))
2075                 return IOCB_ERROR;
2076
2077         /*
2078          * Check to see if we are blocking IOCB processing because of a
2079          * outstanding mbox command.
2080          */
2081         if (unlikely(pring->flag & LPFC_STOP_IOCB_MBX))
2082                 goto iocb_busy;
2083
2084         if (unlikely(phba->hba_state == LPFC_LINK_DOWN)) {
2085                 /*
2086                  * Only CREATE_XRI, CLOSE_XRI, ABORT_XRI, and QUE_RING_BUF
2087                  * can be issued if the link is not up.
2088                  */
2089                 switch (piocb->iocb.ulpCommand) {
2090                 case CMD_QUE_RING_BUF_CN:
2091                 case CMD_QUE_RING_BUF64_CN:
2092                 case CMD_CLOSE_XRI_CN:
2093                 case CMD_ABORT_XRI_CN:
2094                         /*
2095                          * For IOCBs, like QUE_RING_BUF, that have no rsp ring
2096                          * completion, iocb_cmpl MUST be 0.
2097                          */
2098                         if (piocb->iocb_cmpl)
2099                                 piocb->iocb_cmpl = NULL;
2100                         /*FALLTHROUGH*/
2101                 case CMD_CREATE_XRI_CR:
2102                         break;
2103                 default:
2104                         goto iocb_busy;
2105                 }
2106
2107         /*
2108          * For FCP commands, we must be in a state where we can process link
2109          * attention events.
2110          */
2111         } else if (unlikely(pring->ringno == phba->sli.fcp_ring &&
2112                    !(phba->sli.sli_flag & LPFC_PROCESS_LA)))
2113                 goto iocb_busy;
2114
2115         /*
2116          * Check to see if this is a high priority command.
2117          * If so bypass tx queue processing.
2118          */
2119         if (unlikely((flag & SLI_IOCB_HIGH_PRIORITY) &&
2120                      (iocb = lpfc_sli_next_iocb_slot(phba, pring)))) {
2121                 lpfc_sli_submit_iocb(phba, pring, iocb, piocb);
2122                 piocb = NULL;
2123         }
2124
2125         while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
2126                (nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb)))
2127                 lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
2128
2129         if (iocb)
2130                 lpfc_sli_update_ring(phba, pring);
2131         else
2132                 lpfc_sli_update_full_ring(phba, pring);
2133
2134         if (!piocb)
2135                 return IOCB_SUCCESS;
2136
2137         goto out_busy;
2138
2139  iocb_busy:
2140         pring->stats.iocb_cmd_delay++;
2141
2142  out_busy:
2143
2144         if (!(flag & SLI_IOCB_RET_IOCB)) {
2145                 lpfc_sli_ringtx_put(phba, pring, piocb);
2146                 return IOCB_SUCCESS;
2147         }
2148
2149         return IOCB_BUSY;
2150 }
2151
2152 int
2153 lpfc_sli_setup(struct lpfc_hba *phba)
2154 {
2155         int i, totiocb = 0;
2156         struct lpfc_sli *psli = &phba->sli;
2157         struct lpfc_sli_ring *pring;
2158
2159         psli->num_rings = MAX_CONFIGURED_RINGS;
2160         psli->sli_flag = 0;
2161         psli->fcp_ring = LPFC_FCP_RING;
2162         psli->next_ring = LPFC_FCP_NEXT_RING;
2163         psli->ip_ring = LPFC_IP_RING;
2164
2165         for (i = 0; i < psli->num_rings; i++) {
2166                 pring = &psli->ring[i];
2167                 switch (i) {
2168                 case LPFC_FCP_RING:     /* ring 0 - FCP */
2169                         /* numCiocb and numRiocb are used in config_port */
2170                         pring->numCiocb = SLI2_IOCB_CMD_R0_ENTRIES;
2171                         pring->numRiocb = SLI2_IOCB_RSP_R0_ENTRIES;
2172                         pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
2173                         pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
2174                         pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
2175                         pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
2176                         pring->iotag_ctr = 0;
2177                         pring->iotag_max =
2178                             (phba->cfg_hba_queue_depth * 2);
2179                         pring->fast_iotag = pring->iotag_max;
2180                         pring->num_mask = 0;
2181                         break;
2182                 case LPFC_IP_RING:      /* ring 1 - IP */
2183                         /* numCiocb and numRiocb are used in config_port */
2184                         pring->numCiocb = SLI2_IOCB_CMD_R1_ENTRIES;
2185                         pring->numRiocb = SLI2_IOCB_RSP_R1_ENTRIES;
2186                         pring->num_mask = 0;
2187                         break;
2188                 case LPFC_ELS_RING:     /* ring 2 - ELS / CT */
2189                         /* numCiocb and numRiocb are used in config_port */
2190                         pring->numCiocb = SLI2_IOCB_CMD_R2_ENTRIES;
2191                         pring->numRiocb = SLI2_IOCB_RSP_R2_ENTRIES;
2192                         pring->fast_iotag = 0;
2193                         pring->iotag_ctr = 0;
2194                         pring->iotag_max = 4096;
2195                         pring->num_mask = 4;
2196                         pring->prt[0].profile = 0;      /* Mask 0 */
2197                         pring->prt[0].rctl = FC_ELS_REQ;
2198                         pring->prt[0].type = FC_ELS_DATA;
2199                         pring->prt[0].lpfc_sli_rcv_unsol_event =
2200                             lpfc_els_unsol_event;
2201                         pring->prt[1].profile = 0;      /* Mask 1 */
2202                         pring->prt[1].rctl = FC_ELS_RSP;
2203                         pring->prt[1].type = FC_ELS_DATA;
2204                         pring->prt[1].lpfc_sli_rcv_unsol_event =
2205                             lpfc_els_unsol_event;
2206                         pring->prt[2].profile = 0;      /* Mask 2 */
2207                         /* NameServer Inquiry */
2208                         pring->prt[2].rctl = FC_UNSOL_CTL;
2209                         /* NameServer */
2210                         pring->prt[2].type = FC_COMMON_TRANSPORT_ULP;
2211                         pring->prt[2].lpfc_sli_rcv_unsol_event =
2212                             lpfc_ct_unsol_event;
2213                         pring->prt[3].profile = 0;      /* Mask 3 */
2214                         /* NameServer response */
2215                         pring->prt[3].rctl = FC_SOL_CTL;
2216                         /* NameServer */
2217                         pring->prt[3].type = FC_COMMON_TRANSPORT_ULP;
2218                         pring->prt[3].lpfc_sli_rcv_unsol_event =
2219                             lpfc_ct_unsol_event;
2220                         break;
2221                 }
2222                 totiocb += (pring->numCiocb + pring->numRiocb);
2223         }
2224         if (totiocb > MAX_SLI2_IOCB) {
2225                 /* Too many cmd / rsp ring entries in SLI2 SLIM */
2226                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2227                                 "%d:0462 Too many cmd / rsp ring entries in "
2228                                 "SLI2 SLIM Data: x%x x%x\n",
2229                                 phba->brd_no, totiocb, MAX_SLI2_IOCB);
2230         }
2231
2232         return 0;
2233 }
2234
2235 int
2236 lpfc_sli_queue_setup(struct lpfc_hba * phba)
2237 {
2238         struct lpfc_sli *psli;
2239         struct lpfc_sli_ring *pring;
2240         int i, cnt;
2241
2242         psli = &phba->sli;
2243         spin_lock_irq(phba->host->host_lock);
2244         INIT_LIST_HEAD(&psli->mboxq);
2245         /* Initialize list headers for txq and txcmplq as double linked lists */
2246         for (i = 0; i < psli->num_rings; i++) {
2247                 pring = &psli->ring[i];
2248                 pring->ringno = i;
2249                 pring->next_cmdidx  = 0;
2250                 pring->local_getidx = 0;
2251                 pring->cmdidx = 0;
2252                 INIT_LIST_HEAD(&pring->txq);
2253                 INIT_LIST_HEAD(&pring->txcmplq);
2254                 INIT_LIST_HEAD(&pring->iocb_continueq);
2255                 INIT_LIST_HEAD(&pring->postbufq);
2256                 cnt = pring->fast_iotag;
2257                 spin_unlock_irq(phba->host->host_lock);
2258                 if (cnt) {
2259                         pring->fast_lookup =
2260                                 kmalloc(cnt * sizeof (struct lpfc_iocbq *),
2261                                         GFP_KERNEL);
2262                         if (pring->fast_lookup == 0) {
2263                                 return (0);
2264                         }
2265                         memset((char *)pring->fast_lookup, 0,
2266                                cnt * sizeof (struct lpfc_iocbq *));
2267                 }
2268                 spin_lock_irq(phba->host->host_lock);
2269         }
2270         spin_unlock_irq(phba->host->host_lock);
2271         return (1);
2272 }
2273
2274 int
2275 lpfc_sli_hba_down(struct lpfc_hba * phba)
2276 {
2277         struct lpfc_sli *psli;
2278         struct lpfc_sli_ring *pring;
2279         LPFC_MBOXQ_t *pmb;
2280         struct lpfc_iocbq *iocb, *next_iocb;
2281         IOCB_t *icmd = NULL;
2282         int i;
2283         unsigned long flags = 0;
2284
2285         psli = &phba->sli;
2286         lpfc_hba_down_prep(phba);
2287
2288         spin_lock_irqsave(phba->host->host_lock, flags);
2289
2290         for (i = 0; i < psli->num_rings; i++) {
2291                 pring = &psli->ring[i];
2292                 pring->flag |= LPFC_DEFERRED_RING_EVENT;
2293
2294                 /*
2295                  * Error everything on the txq since these iocbs have not been
2296                  * given to the FW yet.
2297                  */
2298                 pring->txq_cnt = 0;
2299
2300                 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2301                         list_del_init(&iocb->list);
2302                         if (iocb->iocb_cmpl) {
2303                                 icmd = &iocb->iocb;
2304                                 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2305                                 icmd->un.ulpWord[4] = IOERR_SLI_DOWN;
2306                                 spin_unlock_irqrestore(phba->host->host_lock,
2307                                                        flags);
2308                                 (iocb->iocb_cmpl) (phba, iocb, iocb);
2309                                 spin_lock_irqsave(phba->host->host_lock, flags);
2310                         } else {
2311                                 list_add_tail(&iocb->list,
2312                                               &phba->lpfc_iocb_list);
2313                         }
2314                 }
2315
2316                 INIT_LIST_HEAD(&(pring->txq));
2317
2318                 if (pring->fast_lookup) {
2319                         kfree(pring->fast_lookup);
2320                         pring->fast_lookup = NULL;
2321                 }
2322
2323         }
2324
2325         spin_unlock_irqrestore(phba->host->host_lock, flags);
2326
2327         /* Return any active mbox cmds */
2328         del_timer_sync(&psli->mbox_tmo);
2329         spin_lock_irqsave(phba->host->host_lock, flags);
2330         phba->work_hba_events &= ~WORKER_MBOX_TMO;
2331         if (psli->mbox_active) {
2332                 pmb = psli->mbox_active;
2333                 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
2334                 if (pmb->mbox_cmpl) {
2335                         spin_unlock_irqrestore(phba->host->host_lock, flags);
2336                         pmb->mbox_cmpl(phba,pmb);
2337                         spin_lock_irqsave(phba->host->host_lock, flags);
2338                 }
2339         }
2340         psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2341         psli->mbox_active = NULL;
2342
2343         /* Return any pending mbox cmds */
2344         while ((pmb = lpfc_mbox_get(phba)) != NULL) {
2345                 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
2346                 if (pmb->mbox_cmpl) {
2347                         spin_unlock_irqrestore(phba->host->host_lock, flags);
2348                         pmb->mbox_cmpl(phba,pmb);
2349                         spin_lock_irqsave(phba->host->host_lock, flags);
2350                 }
2351         }
2352
2353         INIT_LIST_HEAD(&psli->mboxq);
2354
2355         spin_unlock_irqrestore(phba->host->host_lock, flags);
2356
2357         /*
2358          * Provided the hba is not in an error state, reset it.  It is not
2359          * capable of IO anymore.
2360          */
2361         if (phba->hba_state != LPFC_HBA_ERROR) {
2362                 phba->hba_state = LPFC_INIT_START;
2363                 lpfc_sli_brdreset(phba, 1);
2364         }
2365
2366         return 1;
2367 }
2368
2369 void
2370 lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt)
2371 {
2372         uint32_t *src = srcp;
2373         uint32_t *dest = destp;
2374         uint32_t ldata;
2375         int i;
2376
2377         for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) {
2378                 ldata = *src;
2379                 ldata = le32_to_cpu(ldata);
2380                 *dest = ldata;
2381                 src++;
2382                 dest++;
2383         }
2384 }
2385
2386 int
2387 lpfc_sli_ringpostbuf_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
2388                          struct lpfc_dmabuf * mp)
2389 {
2390         /* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up
2391            later */
2392         list_add_tail(&mp->list, &pring->postbufq);
2393
2394         pring->postbufq_cnt++;
2395         return 0;
2396 }
2397
2398
2399 struct lpfc_dmabuf *
2400 lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2401                          dma_addr_t phys)
2402 {
2403         struct lpfc_dmabuf *mp, *next_mp;
2404         struct list_head *slp = &pring->postbufq;
2405
2406         /* Search postbufq, from the begining, looking for a match on phys */
2407         list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
2408                 if (mp->phys == phys) {
2409                         list_del_init(&mp->list);
2410                         pring->postbufq_cnt--;
2411                         return mp;
2412                 }
2413         }
2414
2415         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2416                         "%d:0410 Cannot find virtual addr for mapped buf on "
2417                         "ring %d Data x%llx x%p x%p x%x\n",
2418                         phba->brd_no, pring->ringno, (unsigned long long)phys,
2419                         slp->next, slp->prev, pring->postbufq_cnt);
2420         return NULL;
2421 }
2422
2423 static void
2424 lpfc_sli_abort_elsreq_cmpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
2425                            struct lpfc_iocbq * rspiocb)
2426 {
2427         struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
2428         /* Free the resources associated with the ELS_REQUEST64 IOCB the driver
2429          * just aborted.
2430          * In this case, context2  = cmd,  context2->next = rsp, context3 = bpl
2431          */
2432         if (cmdiocb->context2) {
2433                 buf_ptr1 = (struct lpfc_dmabuf *) cmdiocb->context2;
2434
2435                 /* Free the response IOCB before completing the abort
2436                    command.  */
2437                 buf_ptr = NULL;
2438                 list_remove_head((&buf_ptr1->list), buf_ptr,
2439                                  struct lpfc_dmabuf, list);
2440                 if (buf_ptr) {
2441                         lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
2442                         kfree(buf_ptr);
2443                 }
2444                 lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
2445                 kfree(buf_ptr1);
2446         }
2447
2448         if (cmdiocb->context3) {
2449                 buf_ptr = (struct lpfc_dmabuf *) cmdiocb->context3;
2450                 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
2451                 kfree(buf_ptr);
2452         }
2453
2454         list_add_tail(&cmdiocb->list, &phba->lpfc_iocb_list);
2455         return;
2456 }
2457
2458 int
2459 lpfc_sli_issue_abort_iotag32(struct lpfc_hba * phba,
2460                              struct lpfc_sli_ring * pring,
2461                              struct lpfc_iocbq * cmdiocb)
2462 {
2463         struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
2464         struct lpfc_iocbq *abtsiocbp = NULL;
2465         IOCB_t *icmd = NULL;
2466         IOCB_t *iabt = NULL;
2467
2468         /* issue ABTS for this IOCB based on iotag */
2469         list_remove_head(lpfc_iocb_list, abtsiocbp, struct lpfc_iocbq, list);
2470         if (abtsiocbp == NULL)
2471                 return 0;
2472         memset(abtsiocbp, 0, sizeof (struct lpfc_iocbq));
2473
2474         iabt = &abtsiocbp->iocb;
2475         icmd = &cmdiocb->iocb;
2476         switch (icmd->ulpCommand) {
2477         case CMD_ELS_REQUEST64_CR:
2478                 /* Even though we abort the ELS command, the firmware may access
2479                  * the BPL or other resources before it processes our
2480                  * ABORT_MXRI64. Thus we must delay reusing the cmdiocb
2481                  * resources till the actual abort request completes.
2482                  */
2483                 abtsiocbp->context1 = (void *)((unsigned long)icmd->ulpCommand);
2484                 abtsiocbp->context2 = cmdiocb->context2;
2485                 abtsiocbp->context3 = cmdiocb->context3;
2486                 cmdiocb->context2 = NULL;
2487                 cmdiocb->context3 = NULL;
2488                 abtsiocbp->iocb_cmpl = lpfc_sli_abort_elsreq_cmpl;
2489                 break;
2490         default:
2491                 list_add_tail(&abtsiocbp->list, lpfc_iocb_list);
2492                 return 0;
2493         }
2494
2495         iabt->un.amxri.abortType = ABORT_TYPE_ABTS;
2496         iabt->un.amxri.iotag32 = icmd->un.elsreq64.bdl.ulpIoTag32;
2497
2498         iabt->ulpLe = 1;
2499         iabt->ulpClass = CLASS3;
2500         iabt->ulpCommand = CMD_ABORT_MXRI64_CN;
2501
2502         if (lpfc_sli_issue_iocb(phba, pring, abtsiocbp, 0) == IOCB_ERROR) {
2503                 list_add_tail(&abtsiocbp->list, lpfc_iocb_list);
2504                 return 0;
2505         }
2506
2507         return 1;
2508 }
2509
2510 static int
2511 lpfc_sli_validate_iocb_cmd(struct lpfc_scsi_buf *lpfc_cmd, uint16_t tgt_id,
2512                              uint64_t lun_id, struct lpfc_iocbq *iocb,
2513                              uint32_t ctx, lpfc_ctx_cmd ctx_cmd)
2514 {
2515         int rc = 1;
2516
2517         if (lpfc_cmd == NULL)
2518                 return rc;
2519
2520         switch (ctx_cmd) {
2521         case LPFC_CTX_LUN:
2522                 if ((lpfc_cmd->pCmd->device->id == tgt_id) &&
2523                     (lpfc_cmd->pCmd->device->lun == lun_id))
2524                         rc = 0;
2525                 break;
2526         case LPFC_CTX_TGT:
2527                 if (lpfc_cmd->pCmd->device->id == tgt_id)
2528                         rc = 0;
2529                 break;
2530         case LPFC_CTX_CTX:
2531                 if (iocb->iocb.ulpContext == ctx)
2532                         rc = 0;
2533         case LPFC_CTX_HOST:
2534                 rc = 0;
2535                 break;
2536         default:
2537                 printk(KERN_ERR "%s: Unknown context cmd type, value %d\n",
2538                         __FUNCTION__, ctx_cmd);
2539                 break;
2540         }
2541
2542         return rc;
2543 }
2544
2545 int
2546 lpfc_sli_sum_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2547                 uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd ctx_cmd)
2548 {
2549         struct lpfc_iocbq *iocb, *next_iocb;
2550         IOCB_t *cmd = NULL;
2551         struct lpfc_scsi_buf *lpfc_cmd;
2552         int sum = 0, ret_val = 0;
2553
2554         /* Next check the txcmplq */
2555         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2556                 cmd = &iocb->iocb;
2557
2558                 /* Must be a FCP command */
2559                 if ((cmd->ulpCommand != CMD_FCP_ICMND64_CR) &&
2560                     (cmd->ulpCommand != CMD_FCP_IWRITE64_CR) &&
2561                     (cmd->ulpCommand != CMD_FCP_IREAD64_CR)) {
2562                         continue;
2563                 }
2564
2565                 /* context1 MUST be a struct lpfc_scsi_buf */
2566                 lpfc_cmd = (struct lpfc_scsi_buf *) (iocb->context1);
2567                 ret_val = lpfc_sli_validate_iocb_cmd(lpfc_cmd, tgt_id, lun_id,
2568                                                      NULL, 0, ctx_cmd);
2569                 if (ret_val != 0)
2570                         continue;
2571                 sum++;
2572         }
2573         return sum;
2574 }
2575
2576 int
2577 lpfc_sli_abort_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2578                     uint16_t tgt_id, uint64_t lun_id, uint32_t ctx,
2579                     lpfc_ctx_cmd abort_cmd)
2580 {
2581         struct lpfc_iocbq *iocb, *next_iocb;
2582         struct lpfc_iocbq *abtsiocb = NULL;
2583         struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
2584         IOCB_t *cmd = NULL;
2585         struct lpfc_scsi_buf *lpfc_cmd;
2586         int errcnt = 0, ret_val = 0;
2587
2588         list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
2589                 cmd = &iocb->iocb;
2590
2591                 /* Must be a FCP command */
2592                 if ((cmd->ulpCommand != CMD_FCP_ICMND64_CR) &&
2593                     (cmd->ulpCommand != CMD_FCP_IWRITE64_CR) &&
2594                     (cmd->ulpCommand != CMD_FCP_IREAD64_CR)) {
2595                         continue;
2596                 }
2597
2598                 /* context1 MUST be a struct lpfc_scsi_buf */
2599                 lpfc_cmd = (struct lpfc_scsi_buf *) (iocb->context1);
2600                 ret_val = lpfc_sli_validate_iocb_cmd(lpfc_cmd, tgt_id, lun_id,
2601                                                      iocb, ctx, abort_cmd);
2602                 if (ret_val != 0)
2603                         continue;
2604
2605                 /* issue ABTS for this IOCB based on iotag */
2606                 list_remove_head(lpfc_iocb_list, abtsiocb, struct lpfc_iocbq,
2607                                  list);
2608                 if (abtsiocb == NULL) {
2609                         errcnt++;
2610                         continue;
2611                 }
2612                 memset(abtsiocb, 0, sizeof (struct lpfc_iocbq));
2613
2614                 abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS;
2615                 abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext;
2616                 abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag;
2617                 abtsiocb->iocb.ulpLe = 1;
2618                 abtsiocb->iocb.ulpClass = cmd->ulpClass;
2619
2620                 if (phba->hba_state >= LPFC_LINK_UP)
2621                         abtsiocb->iocb.ulpCommand = CMD_ABORT_XRI_CN;
2622                 else
2623                         abtsiocb->iocb.ulpCommand = CMD_CLOSE_XRI_CN;
2624
2625                 ret_val = lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0);
2626                 if (ret_val == IOCB_ERROR) {
2627                         list_add_tail(&abtsiocb->list, lpfc_iocb_list);
2628                         errcnt++;
2629                         continue;
2630                 }
2631         }
2632
2633         return errcnt;
2634 }
2635
2636 void
2637 lpfc_sli_wake_iocb_high_priority(struct lpfc_hba * phba,
2638                                  struct lpfc_iocbq * queue1,
2639                                  struct lpfc_iocbq * queue2)
2640 {
2641         if (queue1->context2 && queue2)
2642                 memcpy(queue1->context2, queue2, sizeof (struct lpfc_iocbq));
2643
2644         /* The waiter is looking for LPFC_IO_HIPRI bit to be set
2645            as a signal to wake up */
2646         queue1->iocb_flag |= LPFC_IO_HIPRI;
2647         return;
2648 }
2649
2650 int
2651 lpfc_sli_issue_iocb_wait_high_priority(struct lpfc_hba * phba,
2652                                        struct lpfc_sli_ring * pring,
2653                                        struct lpfc_iocbq * piocb,
2654                                        uint32_t flag,
2655                                        struct lpfc_iocbq * prspiocbq,
2656                                        uint32_t timeout)
2657 {
2658         int j, delay_time,  retval = IOCB_ERROR;
2659
2660         /* The caller must left context1 empty.  */
2661         if (piocb->context_un.hipri_wait_queue != 0) {
2662                 return IOCB_ERROR;
2663         }
2664
2665         /*
2666          * If the caller has provided a response iocbq buffer, context2 must
2667          * be NULL or its an error.
2668          */
2669         if (prspiocbq && piocb->context2) {
2670                 return IOCB_ERROR;
2671         }
2672
2673         piocb->context2 = prspiocbq;
2674
2675         /* Setup callback routine and issue the command. */
2676         piocb->iocb_cmpl = lpfc_sli_wake_iocb_high_priority;
2677         retval = lpfc_sli_issue_iocb(phba, pring, piocb,
2678                                         flag | SLI_IOCB_HIGH_PRIORITY);
2679         if (retval != IOCB_SUCCESS) {
2680                 piocb->context2 = NULL;
2681                 return IOCB_ERROR;
2682         }
2683
2684         /*
2685          * This high-priority iocb was sent out-of-band.  Poll for its
2686          * completion rather than wait for a signal.  Note that the host_lock
2687          * is held by the midlayer and must be released here to allow the
2688          * interrupt handlers to complete the IO and signal this routine via
2689          * the iocb_flag.
2690          * Also, the delay_time is computed to be one second longer than
2691          * the scsi command timeout to give the FW time to abort on
2692          * timeout rather than the driver just giving up.  Typically,
2693          * the midlayer does not specify a time for this command so the
2694          * driver is free to enforce its own timeout.
2695          */
2696
2697         delay_time = ((timeout + 1) * 1000) >> 6;
2698         retval = IOCB_ERROR;
2699         spin_unlock_irq(phba->host->host_lock);
2700         for (j = 0; j < 64; j++) {
2701                 msleep(delay_time);
2702                 if (piocb->iocb_flag & LPFC_IO_HIPRI) {
2703                         piocb->iocb_flag &= ~LPFC_IO_HIPRI;
2704                         retval = IOCB_SUCCESS;
2705                         break;
2706                 }
2707         }
2708
2709         spin_lock_irq(phba->host->host_lock);
2710         piocb->context2 = NULL;
2711         return retval;
2712 }
2713 int
2714 lpfc_sli_issue_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq,
2715                          uint32_t timeout)
2716 {
2717         DECLARE_WAIT_QUEUE_HEAD(done_q);
2718         DECLARE_WAITQUEUE(wq_entry, current);
2719         uint32_t timeleft = 0;
2720         int retval;
2721
2722         /* The caller must leave context1 empty. */
2723         if (pmboxq->context1 != 0) {
2724                 return (MBX_NOT_FINISHED);
2725         }
2726
2727         /* setup wake call as IOCB callback */
2728         pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait;
2729         /* setup context field to pass wait_queue pointer to wake function  */
2730         pmboxq->context1 = &done_q;
2731
2732         /* start to sleep before we wait, to avoid races */
2733         set_current_state(TASK_INTERRUPTIBLE);
2734         add_wait_queue(&done_q, &wq_entry);
2735
2736         /* now issue the command */
2737         retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
2738
2739         if (retval == MBX_BUSY || retval == MBX_SUCCESS) {
2740                 timeleft = schedule_timeout(timeout * HZ);
2741                 pmboxq->context1 = NULL;
2742                 /* if schedule_timeout returns 0, we timed out and were not
2743                    woken up */
2744                 if (timeleft == 0) {
2745                         retval = MBX_TIMEOUT;
2746                 } else {
2747                         retval = MBX_SUCCESS;
2748                 }
2749         }
2750
2751
2752         set_current_state(TASK_RUNNING);
2753         remove_wait_queue(&done_q, &wq_entry);
2754         return retval;
2755 }
2756
2757 irqreturn_t
2758 lpfc_intr_handler(int irq, void *dev_id, struct pt_regs * regs)
2759 {
2760         struct lpfc_hba *phba;
2761         uint32_t ha_copy;
2762         uint32_t work_ha_copy;
2763         unsigned long status;
2764         int i;
2765         uint32_t control;
2766
2767         /*
2768          * Get the driver's phba structure from the dev_id and
2769          * assume the HBA is not interrupting.
2770          */
2771         phba = (struct lpfc_hba *) dev_id;
2772
2773         if (unlikely(!phba))
2774                 return IRQ_NONE;
2775
2776         phba->sli.slistat.sli_intr++;
2777
2778         /*
2779          * Call the HBA to see if it is interrupting.  If not, don't claim
2780          * the interrupt
2781          */
2782
2783         /* Ignore all interrupts during initialization. */
2784         if (unlikely(phba->hba_state < LPFC_LINK_DOWN))
2785                 return IRQ_NONE;
2786
2787         /*
2788          * Read host attention register to determine interrupt source
2789          * Clear Attention Sources, except Error Attention (to
2790          * preserve status) and Link Attention
2791          */
2792         spin_lock(phba->host->host_lock);
2793         ha_copy = readl(phba->HAregaddr);
2794         writel((ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr);
2795         readl(phba->HAregaddr); /* flush */
2796         spin_unlock(phba->host->host_lock);
2797
2798         if (unlikely(!ha_copy))
2799                 return IRQ_NONE;
2800
2801         work_ha_copy = ha_copy & phba->work_ha_mask;
2802
2803         if (unlikely(work_ha_copy)) {
2804                 if (work_ha_copy & HA_LATT) {
2805                         if (phba->sli.sli_flag & LPFC_PROCESS_LA) {
2806                                 /*
2807                                  * Turn off Link Attention interrupts
2808                                  * until CLEAR_LA done
2809                                  */
2810                                 spin_lock(phba->host->host_lock);
2811                                 phba->sli.sli_flag &= ~LPFC_PROCESS_LA;
2812                                 control = readl(phba->HCregaddr);
2813                                 control &= ~HC_LAINT_ENA;
2814                                 writel(control, phba->HCregaddr);
2815                                 readl(phba->HCregaddr); /* flush */
2816                                 spin_unlock(phba->host->host_lock);
2817                         }
2818                         else
2819                                 work_ha_copy &= ~HA_LATT;
2820                 }
2821
2822                 if (work_ha_copy & ~(HA_ERATT|HA_MBATT|HA_LATT)) {
2823                         for (i = 0; i < phba->sli.num_rings; i++) {
2824                                 if (work_ha_copy & (HA_RXATT << (4*i))) {
2825                                         /*
2826                                          * Turn off Slow Rings interrupts
2827                                          */
2828                                         spin_lock(phba->host->host_lock);
2829                                         control = readl(phba->HCregaddr);
2830                                         control &= ~(HC_R0INT_ENA << i);
2831                                         writel(control, phba->HCregaddr);
2832                                         readl(phba->HCregaddr); /* flush */
2833                                         spin_unlock(phba->host->host_lock);
2834                                 }
2835                         }
2836                 }
2837
2838                 if (work_ha_copy & HA_ERATT) {
2839                         phba->hba_state = LPFC_HBA_ERROR;
2840                         /*
2841                          * There was a link/board error.  Read the
2842                          * status register to retrieve the error event
2843                          * and process it.
2844                          */
2845                         phba->sli.slistat.err_attn_event++;
2846                         /* Save status info */
2847                         phba->work_hs = readl(phba->HSregaddr);
2848                         phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
2849                         phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
2850
2851                         /* Clear Chip error bit */
2852                         writel(HA_ERATT, phba->HAregaddr);
2853                         readl(phba->HAregaddr); /* flush */
2854
2855                         /*
2856                          * Reseting the HBA is the only reliable way
2857                          * to shutdown interrupt when there is a
2858                          * ERROR.
2859                          */
2860                         lpfc_sli_send_reset(phba, phba->hba_state);
2861                 }
2862
2863                 spin_lock(phba->host->host_lock);
2864                 phba->work_ha |= work_ha_copy;
2865                 if (phba->work_wait)
2866                         wake_up(phba->work_wait);
2867                 spin_unlock(phba->host->host_lock);
2868         }
2869
2870         ha_copy &= ~(phba->work_ha_mask);
2871
2872         /*
2873          * Process all events on FCP ring.  Take the optimized path for
2874          * FCP IO.  Any other IO is slow path and is handled by
2875          * the worker thread.
2876          */
2877         status = (ha_copy & (HA_RXMASK  << (4*LPFC_FCP_RING)));
2878         status >>= (4*LPFC_FCP_RING);
2879         if (status & HA_RXATT)
2880                 lpfc_sli_handle_fast_ring_event(phba,
2881                                                 &phba->sli.ring[LPFC_FCP_RING],
2882                                                 status);
2883         return IRQ_HANDLED;
2884
2885 } /* lpfc_intr_handler */