1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2006 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
7 * Portions Copyright (C) 2004-2005 Christoph Hellwig *
9 * This program is free software; you can redistribute it and/or *
10 * modify it under the terms of version 2 of the GNU General *
11 * Public License as published by the Free Software Foundation. *
12 * This program is distributed in the hope that it will be useful. *
13 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
14 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
15 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
16 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
17 * TO BE LEGALLY INVALID. See the GNU General Public License for *
18 * more details, a copy of which can be found in the file COPYING *
19 * included with this package. *
20 *******************************************************************/
22 #include <linux/blkdev.h>
23 #include <linux/pci.h>
24 #include <linux/interrupt.h>
25 #include <linux/delay.h>
27 #include <scsi/scsi.h>
28 #include <scsi/scsi_cmnd.h>
29 #include <scsi/scsi_device.h>
30 #include <scsi/scsi_host.h>
31 #include <scsi/scsi_transport_fc.h>
35 #include "lpfc_disc.h"
36 #include "lpfc_scsi.h"
38 #include "lpfc_crtn.h"
39 #include "lpfc_logmsg.h"
40 #include "lpfc_compat.h"
43 * Define macro to log: Mailbox command x%x cannot issue Data
44 * This allows multiple uses of lpfc_msgBlk0311
45 * w/o perturbing log msg utility.
47 #define LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag) \
48 lpfc_printf_log(phba, \
51 "%d:0311 Mailbox command x%x cannot issue " \
52 "Data: x%x x%x x%x\n", \
60 /* There are only four IOCB completion types. */
61 typedef enum _lpfc_iocb_type {
69 lpfc_sli_get_iocbq(struct lpfc_hba * phba)
71 struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
72 struct lpfc_iocbq * iocbq = NULL;
74 list_remove_head(lpfc_iocb_list, iocbq, struct lpfc_iocbq, list);
79 lpfc_sli_release_iocbq(struct lpfc_hba * phba, struct lpfc_iocbq * iocbq)
81 size_t start_clean = (size_t)(&((struct lpfc_iocbq *)NULL)->iocb);
84 * Clean all volatile data fields, preserve iotag and node struct.
86 memset((char*)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
87 list_add_tail(&iocbq->list, &phba->lpfc_iocb_list);
91 * Translate the iocb command to an iocb command type used to decide the final
92 * disposition of each completed IOCB.
95 lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd)
97 lpfc_iocb_type type = LPFC_UNKNOWN_IOCB;
99 if (iocb_cmnd > CMD_MAX_IOCB_CMD)
103 case CMD_XMIT_SEQUENCE_CR:
104 case CMD_XMIT_SEQUENCE_CX:
105 case CMD_XMIT_BCAST_CN:
106 case CMD_XMIT_BCAST_CX:
107 case CMD_ELS_REQUEST_CR:
108 case CMD_ELS_REQUEST_CX:
109 case CMD_CREATE_XRI_CR:
110 case CMD_CREATE_XRI_CX:
112 case CMD_XMIT_ELS_RSP_CX:
114 case CMD_FCP_IWRITE_CR:
115 case CMD_FCP_IWRITE_CX:
116 case CMD_FCP_IREAD_CR:
117 case CMD_FCP_IREAD_CX:
118 case CMD_FCP_ICMND_CR:
119 case CMD_FCP_ICMND_CX:
120 case CMD_ADAPTER_MSG:
121 case CMD_ADAPTER_DUMP:
122 case CMD_XMIT_SEQUENCE64_CR:
123 case CMD_XMIT_SEQUENCE64_CX:
124 case CMD_XMIT_BCAST64_CN:
125 case CMD_XMIT_BCAST64_CX:
126 case CMD_ELS_REQUEST64_CR:
127 case CMD_ELS_REQUEST64_CX:
128 case CMD_FCP_IWRITE64_CR:
129 case CMD_FCP_IWRITE64_CX:
130 case CMD_FCP_IREAD64_CR:
131 case CMD_FCP_IREAD64_CX:
132 case CMD_FCP_ICMND64_CR:
133 case CMD_FCP_ICMND64_CX:
134 case CMD_GEN_REQUEST64_CR:
135 case CMD_GEN_REQUEST64_CX:
136 case CMD_XMIT_ELS_RSP64_CX:
137 type = LPFC_SOL_IOCB;
139 case CMD_ABORT_XRI_CN:
140 case CMD_ABORT_XRI_CX:
141 case CMD_CLOSE_XRI_CN:
142 case CMD_CLOSE_XRI_CX:
143 case CMD_XRI_ABORTED_CX:
144 case CMD_ABORT_MXRI64_CN:
145 type = LPFC_ABORT_IOCB;
147 case CMD_RCV_SEQUENCE_CX:
148 case CMD_RCV_ELS_REQ_CX:
149 case CMD_RCV_SEQUENCE64_CX:
150 case CMD_RCV_ELS_REQ64_CX:
151 type = LPFC_UNSOL_IOCB;
154 type = LPFC_UNKNOWN_IOCB;
162 lpfc_sli_ring_map(struct lpfc_hba * phba, LPFC_MBOXQ_t *pmb)
164 struct lpfc_sli *psli = &phba->sli;
165 MAILBOX_t *pmbox = &pmb->mb;
168 for (i = 0; i < psli->num_rings; i++) {
169 phba->hba_state = LPFC_INIT_MBX_CMDS;
170 lpfc_config_ring(phba, i, pmb);
171 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
172 if (rc != MBX_SUCCESS) {
173 lpfc_printf_log(phba,
176 "%d:0446 Adapter failed to init, "
177 "mbxCmd x%x CFG_RING, mbxStatus x%x, "
183 phba->hba_state = LPFC_HBA_ERROR;
191 lpfc_sli_ringtxcmpl_put(struct lpfc_hba * phba,
192 struct lpfc_sli_ring * pring, struct lpfc_iocbq * piocb)
196 list_add_tail(&piocb->list, &pring->txcmplq);
197 pring->txcmplq_cnt++;
198 if (unlikely(pring->ringno == LPFC_ELS_RING))
199 mod_timer(&phba->els_tmofunc,
200 jiffies + HZ * (phba->fc_ratov << 1));
202 if (pring->fast_lookup) {
203 /* Setup fast lookup based on iotag for completion */
204 iotag = piocb->iocb.ulpIoTag;
205 if (iotag && (iotag < pring->fast_iotag))
206 *(pring->fast_lookup + iotag) = piocb;
209 /* Cmd ring <ringno> put: iotag <iotag> greater then
210 configured max <fast_iotag> wd0 <icmd> */
211 lpfc_printf_log(phba,
214 "%d:0316 Cmd ring %d put: iotag x%x "
215 "greater then configured max x%x "
218 pring->ringno, iotag,
220 *(((uint32_t *)(&piocb->iocb)) + 7));
226 static struct lpfc_iocbq *
227 lpfc_sli_ringtx_get(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
229 struct list_head *dlp;
230 struct lpfc_iocbq *cmd_iocb;
234 list_remove_head((&pring->txq), cmd_iocb,
238 /* If the first ptr is not equal to the list header,
239 * deque the IOCBQ_t and return it.
247 lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
249 struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
250 uint32_t max_cmd_idx = pring->numCiocb;
253 if ((pring->next_cmdidx == pring->cmdidx) &&
254 (++pring->next_cmdidx >= max_cmd_idx))
255 pring->next_cmdidx = 0;
257 if (unlikely(pring->local_getidx == pring->next_cmdidx)) {
259 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
261 if (unlikely(pring->local_getidx >= max_cmd_idx)) {
262 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
263 "%d:0315 Ring %d issue: portCmdGet %d "
264 "is bigger then cmd ring %d\n",
265 phba->brd_no, pring->ringno,
266 pring->local_getidx, max_cmd_idx);
268 phba->hba_state = LPFC_HBA_ERROR;
270 * All error attention handlers are posted to
273 phba->work_ha |= HA_ERATT;
274 phba->work_hs = HS_FFER3;
276 wake_up(phba->work_wait);
281 if (pring->local_getidx == pring->next_cmdidx)
285 iocb = IOCB_ENTRY(pring->cmdringaddr, pring->cmdidx);
291 lpfc_sli_next_iotag(struct lpfc_hba * phba, struct lpfc_iocbq * iocbq)
293 struct lpfc_iocbq ** new_arr;
294 struct lpfc_iocbq ** old_arr;
296 struct lpfc_sli *psli = &phba->sli;
299 spin_lock_irq(phba->host->host_lock);
300 iotag = psli->last_iotag;
301 if(++iotag < psli->iocbq_lookup_len) {
302 psli->last_iotag = iotag;
303 psli->iocbq_lookup[iotag] = iocbq;
304 spin_unlock_irq(phba->host->host_lock);
305 iocbq->iotag = iotag;
308 else if (psli->iocbq_lookup_len < (0xffff
309 - LPFC_IOCBQ_LOOKUP_INCREMENT)) {
310 new_len = psli->iocbq_lookup_len + LPFC_IOCBQ_LOOKUP_INCREMENT;
311 spin_unlock_irq(phba->host->host_lock);
312 new_arr = kmalloc(new_len * sizeof (struct lpfc_iocbq *),
315 memset((char *)new_arr, 0,
316 new_len * sizeof (struct lpfc_iocbq *));
317 spin_lock_irq(phba->host->host_lock);
318 old_arr = psli->iocbq_lookup;
319 if (new_len <= psli->iocbq_lookup_len) {
320 /* highly unprobable case */
322 iotag = psli->last_iotag;
323 if(++iotag < psli->iocbq_lookup_len) {
324 psli->last_iotag = iotag;
325 psli->iocbq_lookup[iotag] = iocbq;
326 spin_unlock_irq(phba->host->host_lock);
327 iocbq->iotag = iotag;
330 spin_unlock_irq(phba->host->host_lock);
333 if (psli->iocbq_lookup)
334 memcpy(new_arr, old_arr,
335 ((psli->last_iotag + 1) *
336 sizeof (struct lpfc_iocbq *)));
337 psli->iocbq_lookup = new_arr;
338 psli->iocbq_lookup_len = new_len;
339 psli->last_iotag = iotag;
340 psli->iocbq_lookup[iotag] = iocbq;
341 spin_unlock_irq(phba->host->host_lock);
342 iocbq->iotag = iotag;
348 lpfc_printf_log(phba, KERN_ERR,LOG_SLI,
349 "%d:0318 Failed to allocate IOTAG.last IOTAG is %d\n",
350 phba->brd_no, psli->last_iotag);
356 lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
357 IOCB_t *iocb, struct lpfc_iocbq *nextiocb)
362 nextiocb->iocb.ulpIoTag = (nextiocb->iocb_cmpl) ? nextiocb->iotag : 0;
365 * Issue iocb command to adapter
367 lpfc_sli_pcimem_bcopy(&nextiocb->iocb, iocb, sizeof (IOCB_t));
369 pring->stats.iocb_cmd++;
372 * If there is no completion routine to call, we can release the
373 * IOCB buffer back right now. For IOCBs, like QUE_RING_BUF,
374 * that have no rsp ring completion, iocb_cmpl MUST be NULL.
376 if (nextiocb->iocb_cmpl)
377 lpfc_sli_ringtxcmpl_put(phba, pring, nextiocb);
379 lpfc_sli_release_iocbq(phba, nextiocb);
382 * Let the HBA know what IOCB slot will be the next one the
383 * driver will put a command into.
385 pring->cmdidx = pring->next_cmdidx;
386 writel(pring->cmdidx, phba->MBslimaddr
387 + (SLIMOFF + (pring->ringno * 2)) * 4);
391 lpfc_sli_update_full_ring(struct lpfc_hba * phba,
392 struct lpfc_sli_ring *pring)
394 int ringno = pring->ringno;
396 pring->flag |= LPFC_CALL_RING_AVAILABLE;
401 * Set ring 'ringno' to SET R0CE_REQ in Chip Att register.
402 * The HBA will tell us when an IOCB entry is available.
404 writel((CA_R0ATT|CA_R0CE_REQ) << (ringno*4), phba->CAregaddr);
405 readl(phba->CAregaddr); /* flush */
407 pring->stats.iocb_cmd_full++;
411 lpfc_sli_update_ring(struct lpfc_hba * phba,
412 struct lpfc_sli_ring *pring)
414 int ringno = pring->ringno;
417 * Tell the HBA that there is work to do in this ring.
420 writel(CA_R0ATT << (ringno * 4), phba->CAregaddr);
421 readl(phba->CAregaddr); /* flush */
425 lpfc_sli_resume_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring)
428 struct lpfc_iocbq *nextiocb;
432 * (a) there is anything on the txq to send
434 * (c) link attention events can be processed (fcp ring only)
435 * (d) IOCB processing is not blocked by the outstanding mbox command.
437 if (pring->txq_cnt &&
438 (phba->hba_state > LPFC_LINK_DOWN) &&
439 (pring->ringno != phba->sli.fcp_ring ||
440 phba->sli.sli_flag & LPFC_PROCESS_LA) &&
441 !(pring->flag & LPFC_STOP_IOCB_MBX)) {
443 while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
444 (nextiocb = lpfc_sli_ringtx_get(phba, pring)))
445 lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
448 lpfc_sli_update_ring(phba, pring);
450 lpfc_sli_update_full_ring(phba, pring);
456 /* lpfc_sli_turn_on_ring is only called by lpfc_sli_handle_mb_event below */
458 lpfc_sli_turn_on_ring(struct lpfc_hba * phba, int ringno)
460 struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[ringno];
462 /* If the ring is active, flag it */
463 if (phba->sli.ring[ringno].cmdringaddr) {
464 if (phba->sli.ring[ringno].flag & LPFC_STOP_IOCB_MBX) {
465 phba->sli.ring[ringno].flag &= ~LPFC_STOP_IOCB_MBX;
467 * Force update of the local copy of cmdGetInx
469 phba->sli.ring[ringno].local_getidx
470 = le32_to_cpu(pgp->cmdGetInx);
471 spin_lock_irq(phba->host->host_lock);
472 lpfc_sli_resume_iocb(phba, &phba->sli.ring[ringno]);
473 spin_unlock_irq(phba->host->host_lock);
479 lpfc_sli_chk_mbx_command(uint8_t mbxCommand)
483 switch (mbxCommand) {
487 case MBX_RUN_BIU_DIAG:
490 case MBX_CONFIG_LINK:
491 case MBX_CONFIG_RING:
493 case MBX_READ_CONFIG:
494 case MBX_READ_RCONFIG:
496 case MBX_READ_STATUS:
500 case MBX_READ_LNK_STAT:
502 case MBX_UNREG_LOGIN:
505 case MBX_DUMP_MEMORY:
506 case MBX_DUMP_CONTEXT:
511 case MBX_DEL_LD_ENTRY:
512 case MBX_RUN_PROGRAM:
517 case MBX_CONFIG_FARP:
520 case MBX_RUN_BIU_DIAG64:
521 case MBX_CONFIG_PORT:
522 case MBX_READ_SPARM64:
524 case MBX_REG_LOGIN64:
526 case MBX_FLASH_WR_ULA:
528 case MBX_LOAD_EXP_ROM:
538 lpfc_sli_wake_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
540 wait_queue_head_t *pdone_q;
543 * If pdone_q is empty, the driver thread gave up waiting and
546 pdone_q = (wait_queue_head_t *) pmboxq->context1;
548 wake_up_interruptible(pdone_q);
553 lpfc_sli_def_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmb)
555 struct lpfc_dmabuf *mp;
556 mp = (struct lpfc_dmabuf *) (pmb->context1);
558 lpfc_mbuf_free(phba, mp->virt, mp->phys);
561 mempool_free( pmb, phba->mbox_mem_pool);
566 lpfc_sli_handle_mb_event(struct lpfc_hba * phba)
571 struct lpfc_sli *psli;
573 uint32_t process_next;
576 /* We should only get here if we are in SLI2 mode */
577 if (!(phba->sli.sli_flag & LPFC_SLI2_ACTIVE)) {
581 phba->sli.slistat.mbox_event++;
583 /* Get a Mailbox buffer to setup mailbox commands for callback */
584 if ((pmb = phba->sli.mbox_active)) {
586 mbox = &phba->slim2p->mbx;
588 /* First check out the status word */
589 lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof (uint32_t));
591 /* Sanity check to ensure the host owns the mailbox */
592 if (pmbox->mbxOwner != OWN_HOST) {
593 /* Lets try for a while */
594 for (i = 0; i < 10240; i++) {
595 /* First copy command data */
596 lpfc_sli_pcimem_bcopy(mbox, pmbox,
598 if (pmbox->mbxOwner == OWN_HOST)
601 /* Stray Mailbox Interrupt, mbxCommand <cmd> mbxStatus
603 lpfc_printf_log(phba,
606 "%d:0304 Stray Mailbox Interrupt "
607 "mbxCommand x%x mbxStatus x%x\n",
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);
619 del_timer_sync(&phba->sli.mbox_tmo);
620 phba->work_hba_events &= ~WORKER_MBOX_TMO;
623 * It is a fatal error if unknown mbox command completion.
625 if (lpfc_sli_chk_mbx_command(pmbox->mbxCommand) ==
628 /* Unknow mailbox command compl */
629 lpfc_printf_log(phba,
632 "%d:0323 Unknown Mailbox command %x Cmpl\n",
635 phba->hba_state = LPFC_HBA_ERROR;
636 phba->work_hs = HS_FFER3;
637 lpfc_handle_eratt(phba);
641 phba->sli.mbox_active = NULL;
642 if (pmbox->mbxStatus) {
643 phba->sli.slistat.mbox_stat_err++;
644 if (pmbox->mbxStatus == MBXERR_NO_RESOURCES) {
645 /* Mbox cmd cmpl error - RETRYing */
646 lpfc_printf_log(phba,
649 "%d:0305 Mbox cmd cmpl error - "
650 "RETRYing Data: x%x x%x x%x x%x\n",
654 pmbox->un.varWords[0],
656 pmbox->mbxStatus = 0;
657 pmbox->mbxOwner = OWN_HOST;
658 spin_lock_irq(phba->host->host_lock);
659 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
660 spin_unlock_irq(phba->host->host_lock);
661 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
662 if (rc == MBX_SUCCESS)
667 /* Mailbox cmd <cmd> Cmpl <cmpl> */
668 lpfc_printf_log(phba,
671 "%d:0307 Mailbox cmd x%x Cmpl x%p "
672 "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x\n",
676 *((uint32_t *) pmbox),
677 pmbox->un.varWords[0],
678 pmbox->un.varWords[1],
679 pmbox->un.varWords[2],
680 pmbox->un.varWords[3],
681 pmbox->un.varWords[4],
682 pmbox->un.varWords[5],
683 pmbox->un.varWords[6],
684 pmbox->un.varWords[7]);
686 if (pmb->mbox_cmpl) {
687 lpfc_sli_pcimem_bcopy(mbox, pmbox, MAILBOX_CMD_SIZE);
688 pmb->mbox_cmpl(phba,pmb);
694 process_next = 0; /* by default don't loop */
695 spin_lock_irq(phba->host->host_lock);
696 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
698 /* Process next mailbox command if there is one */
699 if ((pmb = lpfc_mbox_get(phba))) {
700 spin_unlock_irq(phba->host->host_lock);
701 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
702 if (rc == MBX_NOT_FINISHED) {
703 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
704 pmb->mbox_cmpl(phba,pmb);
706 continue; /* loop back */
709 spin_unlock_irq(phba->host->host_lock);
710 /* Turn on IOCB processing */
711 for (i = 0; i < phba->sli.num_rings; i++) {
712 lpfc_sli_turn_on_ring(phba, i);
715 /* Free any lpfc_dmabuf's waiting for mbox cmd cmpls */
716 while (!list_empty(&phba->freebufList)) {
717 struct lpfc_dmabuf *mp;
720 list_remove_head((&phba->freebufList),
725 lpfc_mbuf_free(phba, mp->virt,
732 } while (process_next);
737 lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
738 struct lpfc_iocbq *saveq)
746 irsp = &(saveq->iocb);
747 if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX)
748 || (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX)) {
753 (WORD5 *) & (saveq->iocb.un.
755 Rctl = w5p->hcsw.Rctl;
756 Type = w5p->hcsw.Type;
758 /* Firmware Workaround */
759 if ((Rctl == 0) && (pring->ringno == LPFC_ELS_RING) &&
760 (irsp->ulpCommand == CMD_RCV_SEQUENCE64_CX)) {
763 w5p->hcsw.Rctl = Rctl;
764 w5p->hcsw.Type = Type;
767 /* unSolicited Responses */
768 if (pring->prt[0].profile) {
769 (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring, saveq);
772 /* We must search, based on rctl / type
773 for the right routine */
774 for (i = 0; i < pring->num_mask;
776 if ((pring->prt[i].rctl ==
780 (pring->prt[i].lpfc_sli_rcv_unsol_event)
781 (phba, pring, saveq);
788 /* Unexpected Rctl / Type received */
789 /* Ring <ringno> handler: unexpected
790 Rctl <Rctl> Type <Type> received */
791 lpfc_printf_log(phba,
794 "%d:0313 Ring %d handler: unexpected Rctl x%x "
795 "Type x%x received \n",
804 static struct lpfc_iocbq *
805 lpfc_sli_iocbq_lookup(struct lpfc_hba * phba,
806 struct lpfc_sli_ring * pring,
807 struct lpfc_iocbq * prspiocb)
809 struct lpfc_iocbq *cmd_iocb = NULL;
812 iotag = prspiocb->iocb.ulpIoTag;
814 if (iotag != 0 && iotag <= phba->sli.last_iotag) {
815 cmd_iocb = phba->sli.iocbq_lookup[iotag];
816 list_del(&cmd_iocb->list);
817 pring->txcmplq_cnt--;
821 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
822 "%d:0317 iotag x%x is out off "
823 "range: max iotag x%x wd0 x%x\n",
825 phba->sli.last_iotag,
826 *(((uint32_t *) &prspiocb->iocb) + 7));
831 lpfc_sli_process_sol_iocb(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
832 struct lpfc_iocbq *saveq)
834 struct lpfc_iocbq * cmdiocbp;
838 /* Based on the iotag field, get the cmd IOCB from the txcmplq */
839 spin_lock_irqsave(phba->host->host_lock, iflag);
840 cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring, saveq);
842 if (cmdiocbp->iocb_cmpl) {
844 * Post all ELS completions to the worker thread.
845 * All other are passed to the completion callback.
847 if (pring->ringno == LPFC_ELS_RING) {
848 spin_unlock_irqrestore(phba->host->host_lock,
850 (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
851 spin_lock_irqsave(phba->host->host_lock, iflag);
854 spin_unlock_irqrestore(phba->host->host_lock,
856 (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
857 spin_lock_irqsave(phba->host->host_lock, iflag);
860 lpfc_sli_release_iocbq(phba, cmdiocbp);
863 * Unknown initiating command based on the response iotag.
864 * This could be the case on the ELS ring because of
867 if (pring->ringno != LPFC_ELS_RING) {
869 * Ring <ringno> handler: unexpected completion IoTag
872 lpfc_printf_log(phba,
875 "%d:0322 Ring %d handler: unexpected "
876 "completion IoTag x%x Data: x%x x%x x%x x%x\n",
879 saveq->iocb.ulpIoTag,
880 saveq->iocb.ulpStatus,
881 saveq->iocb.un.ulpWord[4],
882 saveq->iocb.ulpCommand,
883 saveq->iocb.ulpContext);
887 spin_unlock_irqrestore(phba->host->host_lock, iflag);
891 static void lpfc_sli_rsp_pointers_error(struct lpfc_hba * phba,
892 struct lpfc_sli_ring * pring)
894 struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
896 * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
897 * rsp ring <portRspMax>
899 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
900 "%d:0312 Ring %d handler: portRspPut %d "
901 "is bigger then rsp ring %d\n",
902 phba->brd_no, pring->ringno,
903 le32_to_cpu(pgp->rspPutInx),
906 phba->hba_state = LPFC_HBA_ERROR;
909 * All error attention handlers are posted to
912 phba->work_ha |= HA_ERATT;
913 phba->work_hs = HS_FFER3;
915 wake_up(phba->work_wait);
920 void lpfc_sli_poll_fcp_ring(struct lpfc_hba * phba)
922 struct lpfc_sli * psli = &phba->sli;
923 struct lpfc_sli_ring * pring = &psli->ring[LPFC_FCP_RING];
925 IOCB_t *entry = NULL;
926 struct lpfc_iocbq *cmdiocbq = NULL;
927 struct lpfc_iocbq rspiocbq;
928 struct lpfc_pgp *pgp;
930 uint32_t portRspPut, portRspMax;
932 uint32_t rsp_cmpl = 0;
933 void __iomem *to_slim;
936 pring->stats.iocb_event++;
938 /* The driver assumes SLI-2 mode */
939 pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
942 * The next available response entry should never exceed the maximum
943 * entries. If it does, treat it as an adapter hardware error.
945 portRspMax = pring->numRiocb;
946 portRspPut = le32_to_cpu(pgp->rspPutInx);
947 if (unlikely(portRspPut >= portRspMax)) {
948 lpfc_sli_rsp_pointers_error(phba, pring);
953 while (pring->rspidx != portRspPut) {
955 entry = IOCB_ENTRY(pring->rspringaddr, pring->rspidx);
957 if (++pring->rspidx >= portRspMax)
960 lpfc_sli_pcimem_bcopy((uint32_t *) entry,
961 (uint32_t *) &rspiocbq.iocb,
963 irsp = &rspiocbq.iocb;
964 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
965 pring->stats.iocb_rsp++;
968 if (unlikely(irsp->ulpStatus)) {
969 /* Rsp ring <ringno> error: IOCB */
970 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
971 "%d:0326 Rsp Ring %d error: IOCB Data: "
972 "x%x x%x x%x x%x x%x x%x x%x x%x\n",
973 phba->brd_no, pring->ringno,
980 *(((uint32_t *) irsp) + 6),
981 *(((uint32_t *) irsp) + 7));
985 case LPFC_ABORT_IOCB:
988 * Idle exchange closed via ABTS from port. No iocb
989 * resources need to be recovered.
991 if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
992 printk(KERN_INFO "%s: IOCB cmd 0x%x processed."
993 " Skipping completion\n", __FUNCTION__,
998 cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
1000 if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
1001 (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
1006 if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1007 char adaptermsg[LPFC_MAX_ADPTMSG];
1008 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
1009 memcpy(&adaptermsg[0], (uint8_t *) irsp,
1011 dev_warn(&((phba->pcidev)->dev), "lpfc%d: %s",
1012 phba->brd_no, adaptermsg);
1014 /* Unknown IOCB command */
1015 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1016 "%d:0321 Unknown IOCB command "
1017 "Data: x%x, x%x x%x x%x x%x\n",
1028 * The response IOCB has been processed. Update the ring
1029 * pointer in SLIM. If the port response put pointer has not
1030 * been updated, sync the pgp->rspPutInx and fetch the new port
1031 * response put pointer.
1033 to_slim = phba->MBslimaddr +
1034 (SLIMOFF + (pring->ringno * 2) + 1) * 4;
1035 writeb(pring->rspidx, to_slim);
1037 if (pring->rspidx == portRspPut)
1038 portRspPut = le32_to_cpu(pgp->rspPutInx);
1041 ha_copy = readl(phba->HAregaddr);
1042 ha_copy >>= (LPFC_FCP_RING * 4);
1044 if ((rsp_cmpl > 0) && (ha_copy & HA_R0RE_REQ)) {
1045 pring->stats.iocb_rsp_full++;
1046 status = ((CA_R0ATT | CA_R0RE_RSP) << (LPFC_FCP_RING * 4));
1047 writel(status, phba->CAregaddr);
1048 readl(phba->CAregaddr);
1050 if ((ha_copy & HA_R0CE_RSP) &&
1051 (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1052 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1053 pring->stats.iocb_cmd_empty++;
1055 /* Force update of the local copy of cmdGetInx */
1056 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1057 lpfc_sli_resume_iocb(phba, pring);
1059 if ((pring->lpfc_sli_cmd_available))
1060 (pring->lpfc_sli_cmd_available) (phba, pring);
1068 * This routine presumes LPFC_FCP_RING handling and doesn't bother
1069 * to check it explicitly.
1072 lpfc_sli_handle_fast_ring_event(struct lpfc_hba * phba,
1073 struct lpfc_sli_ring * pring, uint32_t mask)
1075 struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
1076 IOCB_t *irsp = NULL;
1077 IOCB_t *entry = NULL;
1078 struct lpfc_iocbq *cmdiocbq = NULL;
1079 struct lpfc_iocbq rspiocbq;
1081 uint32_t portRspPut, portRspMax;
1083 lpfc_iocb_type type;
1084 unsigned long iflag;
1085 uint32_t rsp_cmpl = 0;
1086 void __iomem *to_slim;
1088 spin_lock_irqsave(phba->host->host_lock, iflag);
1089 pring->stats.iocb_event++;
1092 * The next available response entry should never exceed the maximum
1093 * entries. If it does, treat it as an adapter hardware error.
1095 portRspMax = pring->numRiocb;
1096 portRspPut = le32_to_cpu(pgp->rspPutInx);
1097 if (unlikely(portRspPut >= portRspMax)) {
1098 lpfc_sli_rsp_pointers_error(phba, pring);
1099 spin_unlock_irqrestore(phba->host->host_lock, iflag);
1104 while (pring->rspidx != portRspPut) {
1106 * Fetch an entry off the ring and copy it into a local data
1107 * structure. The copy involves a byte-swap since the
1108 * network byte order and pci byte orders are different.
1110 entry = IOCB_ENTRY(pring->rspringaddr, pring->rspidx);
1112 if (++pring->rspidx >= portRspMax)
1115 lpfc_sli_pcimem_bcopy((uint32_t *) entry,
1116 (uint32_t *) &rspiocbq.iocb,
1118 irsp = &rspiocbq.iocb;
1120 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
1121 pring->stats.iocb_rsp++;
1124 if (unlikely(irsp->ulpStatus)) {
1125 /* Rsp ring <ringno> error: IOCB */
1126 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
1127 "%d:0326 Rsp Ring %d error: IOCB Data: "
1128 "x%x x%x x%x x%x x%x x%x x%x x%x\n",
1129 phba->brd_no, pring->ringno,
1130 irsp->un.ulpWord[0], irsp->un.ulpWord[1],
1131 irsp->un.ulpWord[2], irsp->un.ulpWord[3],
1132 irsp->un.ulpWord[4], irsp->un.ulpWord[5],
1133 *(((uint32_t *) irsp) + 6),
1134 *(((uint32_t *) irsp) + 7));
1138 case LPFC_ABORT_IOCB:
1141 * Idle exchange closed via ABTS from port. No iocb
1142 * resources need to be recovered.
1144 if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
1145 printk(KERN_INFO "%s: IOCB cmd 0x%x processed. "
1146 "Skipping completion\n", __FUNCTION__,
1151 cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
1153 if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
1154 spin_unlock_irqrestore(
1155 phba->host->host_lock, iflag);
1156 (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
1158 spin_lock_irqsave(phba->host->host_lock,
1163 if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1164 char adaptermsg[LPFC_MAX_ADPTMSG];
1165 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
1166 memcpy(&adaptermsg[0], (uint8_t *) irsp,
1168 dev_warn(&((phba->pcidev)->dev), "lpfc%d: %s",
1169 phba->brd_no, adaptermsg);
1171 /* Unknown IOCB command */
1172 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
1173 "%d:0321 Unknown IOCB command "
1174 "Data: x%x, x%x x%x x%x x%x\n",
1175 phba->brd_no, type, irsp->ulpCommand,
1176 irsp->ulpStatus, irsp->ulpIoTag,
1183 * The response IOCB has been processed. Update the ring
1184 * pointer in SLIM. If the port response put pointer has not
1185 * been updated, sync the pgp->rspPutInx and fetch the new port
1186 * response put pointer.
1188 to_slim = phba->MBslimaddr +
1189 (SLIMOFF + (pring->ringno * 2) + 1) * 4;
1190 writel(pring->rspidx, to_slim);
1192 if (pring->rspidx == portRspPut)
1193 portRspPut = le32_to_cpu(pgp->rspPutInx);
1196 if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) {
1197 pring->stats.iocb_rsp_full++;
1198 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1199 writel(status, phba->CAregaddr);
1200 readl(phba->CAregaddr);
1202 if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1203 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1204 pring->stats.iocb_cmd_empty++;
1206 /* Force update of the local copy of cmdGetInx */
1207 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1208 lpfc_sli_resume_iocb(phba, pring);
1210 if ((pring->lpfc_sli_cmd_available))
1211 (pring->lpfc_sli_cmd_available) (phba, pring);
1215 spin_unlock_irqrestore(phba->host->host_lock, iflag);
1221 lpfc_sli_handle_slow_ring_event(struct lpfc_hba * phba,
1222 struct lpfc_sli_ring * pring, uint32_t mask)
1225 IOCB_t *irsp = NULL;
1226 struct lpfc_iocbq *rspiocbp = NULL;
1227 struct lpfc_iocbq *next_iocb;
1228 struct lpfc_iocbq *cmdiocbp;
1229 struct lpfc_iocbq *saveq;
1230 struct lpfc_pgp *pgp = &phba->slim2p->mbx.us.s2.port[pring->ringno];
1231 uint8_t iocb_cmd_type;
1232 lpfc_iocb_type type;
1233 uint32_t status, free_saveq;
1234 uint32_t portRspPut, portRspMax;
1236 unsigned long iflag;
1237 void __iomem *to_slim;
1239 spin_lock_irqsave(phba->host->host_lock, iflag);
1240 pring->stats.iocb_event++;
1243 * The next available response entry should never exceed the maximum
1244 * entries. If it does, treat it as an adapter hardware error.
1246 portRspMax = pring->numRiocb;
1247 portRspPut = le32_to_cpu(pgp->rspPutInx);
1248 if (portRspPut >= portRspMax) {
1250 * Ring <ringno> handler: portRspPut <portRspPut> is bigger then
1251 * rsp ring <portRspMax>
1253 lpfc_printf_log(phba,
1256 "%d:0312 Ring %d handler: portRspPut %d "
1257 "is bigger then rsp ring %d\n",
1259 pring->ringno, portRspPut, portRspMax);
1261 phba->hba_state = LPFC_HBA_ERROR;
1262 spin_unlock_irqrestore(phba->host->host_lock, iflag);
1264 phba->work_hs = HS_FFER3;
1265 lpfc_handle_eratt(phba);
1271 while (pring->rspidx != portRspPut) {
1273 * Build a completion list and call the appropriate handler.
1274 * The process is to get the next available response iocb, get
1275 * a free iocb from the list, copy the response data into the
1276 * free iocb, insert to the continuation list, and update the
1277 * next response index to slim. This process makes response
1278 * iocb's in the ring available to DMA as fast as possible but
1279 * pays a penalty for a copy operation. Since the iocb is
1280 * only 32 bytes, this penalty is considered small relative to
1281 * the PCI reads for register values and a slim write. When
1282 * the ulpLe field is set, the entire Command has been
1285 entry = IOCB_ENTRY(pring->rspringaddr, pring->rspidx);
1286 rspiocbp = lpfc_sli_get_iocbq(phba);
1287 if (rspiocbp == NULL) {
1288 printk(KERN_ERR "%s: out of buffers! Failing "
1289 "completion.\n", __FUNCTION__);
1293 lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb, sizeof (IOCB_t));
1294 irsp = &rspiocbp->iocb;
1296 if (++pring->rspidx >= portRspMax)
1299 to_slim = phba->MBslimaddr + (SLIMOFF + (pring->ringno * 2)
1301 writel(pring->rspidx, to_slim);
1303 if (list_empty(&(pring->iocb_continueq))) {
1304 list_add(&rspiocbp->list, &(pring->iocb_continueq));
1306 list_add_tail(&rspiocbp->list,
1307 &(pring->iocb_continueq));
1310 pring->iocb_continueq_cnt++;
1313 * By default, the driver expects to free all resources
1314 * associated with this iocb completion.
1317 saveq = list_get_first(&pring->iocb_continueq,
1318 struct lpfc_iocbq, list);
1319 irsp = &(saveq->iocb);
1320 list_del_init(&pring->iocb_continueq);
1321 pring->iocb_continueq_cnt = 0;
1323 pring->stats.iocb_rsp++;
1325 if (irsp->ulpStatus) {
1326 /* Rsp ring <ringno> error: IOCB */
1327 lpfc_printf_log(phba,
1330 "%d:0328 Rsp Ring %d error: IOCB Data: "
1331 "x%x x%x x%x x%x x%x x%x x%x x%x\n",
1334 irsp->un.ulpWord[0],
1335 irsp->un.ulpWord[1],
1336 irsp->un.ulpWord[2],
1337 irsp->un.ulpWord[3],
1338 irsp->un.ulpWord[4],
1339 irsp->un.ulpWord[5],
1340 *(((uint32_t *) irsp) + 6),
1341 *(((uint32_t *) irsp) + 7));
1345 * Fetch the IOCB command type and call the correct
1346 * completion routine. Solicited and Unsolicited
1347 * IOCBs on the ELS ring get freed back to the
1348 * lpfc_iocb_list by the discovery kernel thread.
1350 iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK;
1351 type = lpfc_sli_iocb_cmd_type(iocb_cmd_type);
1352 if (type == LPFC_SOL_IOCB) {
1353 spin_unlock_irqrestore(phba->host->host_lock,
1355 rc = lpfc_sli_process_sol_iocb(phba, pring,
1357 spin_lock_irqsave(phba->host->host_lock, iflag);
1358 } else if (type == LPFC_UNSOL_IOCB) {
1359 spin_unlock_irqrestore(phba->host->host_lock,
1361 rc = lpfc_sli_process_unsol_iocb(phba, pring,
1363 spin_lock_irqsave(phba->host->host_lock, iflag);
1364 } else if (type == LPFC_ABORT_IOCB) {
1365 if ((irsp->ulpCommand != CMD_XRI_ABORTED_CX) &&
1367 lpfc_sli_iocbq_lookup(phba, pring,
1369 /* Call the specified completion
1371 if (cmdiocbp->iocb_cmpl) {
1372 spin_unlock_irqrestore(
1373 phba->host->host_lock,
1375 (cmdiocbp->iocb_cmpl) (phba,
1378 phba->host->host_lock,
1381 lpfc_sli_release_iocbq(phba,
1384 } else if (type == LPFC_UNKNOWN_IOCB) {
1385 if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
1387 char adaptermsg[LPFC_MAX_ADPTMSG];
1389 memset(adaptermsg, 0,
1391 memcpy(&adaptermsg[0], (uint8_t *) irsp,
1393 dev_warn(&((phba->pcidev)->dev),
1395 phba->brd_no, adaptermsg);
1397 /* Unknown IOCB command */
1398 lpfc_printf_log(phba,
1401 "%d:0321 Unknown IOCB command "
1402 "Data: x%x x%x x%x x%x\n",
1412 if (!list_empty(&saveq->list)) {
1413 list_for_each_entry_safe(rspiocbp,
1417 lpfc_sli_release_iocbq(phba,
1422 lpfc_sli_release_iocbq(phba, saveq);
1427 * If the port response put pointer has not been updated, sync
1428 * the pgp->rspPutInx in the MAILBOX_tand fetch the new port
1429 * response put pointer.
1431 if (pring->rspidx == portRspPut) {
1432 portRspPut = le32_to_cpu(pgp->rspPutInx);
1434 } /* while (pring->rspidx != portRspPut) */
1436 if ((rspiocbp != 0) && (mask & HA_R0RE_REQ)) {
1437 /* At least one response entry has been freed */
1438 pring->stats.iocb_rsp_full++;
1439 /* SET RxRE_RSP in Chip Att register */
1440 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
1441 writel(status, phba->CAregaddr);
1442 readl(phba->CAregaddr); /* flush */
1444 if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
1445 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
1446 pring->stats.iocb_cmd_empty++;
1448 /* Force update of the local copy of cmdGetInx */
1449 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
1450 lpfc_sli_resume_iocb(phba, pring);
1452 if ((pring->lpfc_sli_cmd_available))
1453 (pring->lpfc_sli_cmd_available) (phba, pring);
1457 spin_unlock_irqrestore(phba->host->host_lock, iflag);
1462 lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1464 struct lpfc_iocbq *iocb, *next_iocb;
1465 IOCB_t *icmd = NULL, *cmd = NULL;
1470 /* Error everything on txq and txcmplq
1473 spin_lock_irq(phba->host->host_lock);
1474 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
1475 list_del_init(&iocb->list);
1476 if (iocb->iocb_cmpl) {
1478 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1479 icmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1480 spin_unlock_irq(phba->host->host_lock);
1481 (iocb->iocb_cmpl) (phba, iocb, iocb);
1482 spin_lock_irq(phba->host->host_lock);
1484 lpfc_sli_release_iocbq(phba, iocb);
1487 INIT_LIST_HEAD(&(pring->txq));
1489 /* Next issue ABTS for everything on the txcmplq */
1490 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list) {
1494 * Imediate abort of IOCB, deque and call compl
1497 list_del_init(&iocb->list);
1498 pring->txcmplq_cnt--;
1500 if (iocb->iocb_cmpl) {
1501 cmd->ulpStatus = IOSTAT_LOCAL_REJECT;
1502 cmd->un.ulpWord[4] = IOERR_SLI_ABORTED;
1503 spin_unlock_irq(phba->host->host_lock);
1504 (iocb->iocb_cmpl) (phba, iocb, iocb);
1505 spin_lock_irq(phba->host->host_lock);
1507 lpfc_sli_release_iocbq(phba, iocb);
1510 INIT_LIST_HEAD(&pring->txcmplq);
1511 pring->txcmplq_cnt = 0;
1512 spin_unlock_irq(phba->host->host_lock);
1518 lpfc_sli_brdready(struct lpfc_hba * phba, uint32_t mask)
1524 /* Read the HBA Host Status Register */
1525 status = readl(phba->HSregaddr);
1528 * Check status register every 100ms for 5 retries, then every
1529 * 500ms for 5, then every 2.5 sec for 5, then reset board and
1530 * every 2.5 sec for 4.
1531 * Break our of the loop if errors occurred during init.
1533 while (((status & mask) != mask) &&
1534 !(status & HS_FFERM) &&
1545 phba->hba_state = LPFC_STATE_UNKNOWN; /* Do post */
1546 lpfc_sli_brdrestart(phba);
1548 /* Read the HBA Host Status Register */
1549 status = readl(phba->HSregaddr);
1552 /* Check to see if any errors occurred during init */
1553 if ((status & HS_FFERM) || (i >= 20)) {
1554 phba->hba_state = LPFC_HBA_ERROR;
1562 lpfc_sli_brdkill(struct lpfc_hba * phba)
1564 struct lpfc_sli *psli;
1574 lpfc_printf_log(phba,
1577 "%d:0329 Kill HBA Data: x%x x%x\n",
1582 if ((pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
1583 GFP_ATOMIC)) == 0) {
1587 /* Disable the error attention */
1588 spin_lock_irq(phba->host->host_lock);
1589 status = readl(phba->HCregaddr);
1590 status &= ~HC_ERINT_ENA;
1591 writel(status, phba->HCregaddr);
1592 readl(phba->HCregaddr); /* flush */
1593 spin_unlock_irq(phba->host->host_lock);
1595 lpfc_kill_board(phba, pmb);
1596 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1597 retval = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
1599 if (retval != MBX_SUCCESS) {
1600 if (retval != MBX_BUSY)
1601 mempool_free(pmb, phba->mbox_mem_pool);
1605 mempool_free(pmb, phba->mbox_mem_pool);
1607 /* There is no completion for a KILL_BOARD mbox cmd. Check for an error
1608 * attention every 100ms for 3 seconds. If we don't get ERATT after
1609 * 3 seconds we still set HBA_ERROR state because the status of the
1610 * board is now undefined.
1612 ha_copy = readl(phba->HAregaddr);
1614 while ((i++ < 30) && !(ha_copy & HA_ERATT)) {
1616 ha_copy = readl(phba->HAregaddr);
1619 del_timer_sync(&psli->mbox_tmo);
1621 spin_lock_irq(phba->host->host_lock);
1622 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1623 spin_unlock_irq(phba->host->host_lock);
1625 psli->mbox_active = NULL;
1626 lpfc_hba_down_post(phba);
1627 phba->hba_state = LPFC_HBA_ERROR;
1629 return (ha_copy & HA_ERATT ? 0 : 1);
1633 lpfc_sli_brdreset(struct lpfc_hba * phba)
1635 struct lpfc_sli *psli;
1636 struct lpfc_sli_ring *pring;
1643 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
1644 "%d:0325 Reset HBA Data: x%x x%x\n", phba->brd_no,
1645 phba->hba_state, psli->sli_flag);
1647 /* perform board reset */
1648 phba->fc_eventTag = 0;
1650 phba->fc_prevDID = 0;
1654 /* Turn off parity checking and serr during the physical reset */
1655 pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value);
1656 pci_write_config_word(phba->pcidev, PCI_COMMAND,
1658 ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
1660 /* Now toggle INITFF bit in the Host Control Register */
1661 writel(HC_INITFF, phba->HCregaddr);
1663 readl(phba->HCregaddr); /* flush */
1664 writel(0, phba->HCregaddr);
1665 readl(phba->HCregaddr); /* flush */
1667 /* Restore PCI cmd register */
1668 pci_write_config_word(phba->pcidev, PCI_COMMAND, cfg_value);
1670 /* Initialize relevant SLI info */
1671 for (i = 0; i < psli->num_rings; i++) {
1672 pring = &psli->ring[i];
1675 pring->next_cmdidx = 0;
1676 pring->local_getidx = 0;
1678 pring->missbufcnt = 0;
1681 phba->hba_state = LPFC_WARM_START;
1686 lpfc_sli_brdrestart(struct lpfc_hba * phba)
1689 struct lpfc_sli *psli;
1691 volatile uint32_t word0;
1692 void __iomem *to_slim;
1694 spin_lock_irq(phba->host->host_lock);
1699 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
1700 "%d:0328 Restart HBA Data: x%x x%x\n", phba->brd_no,
1701 phba->hba_state, psli->sli_flag);
1704 mb = (MAILBOX_t *) &word0;
1705 mb->mbxCommand = MBX_RESTART;
1708 to_slim = phba->MBslimaddr;
1709 writel(*(uint32_t *) mb, to_slim);
1710 readl(to_slim); /* flush */
1712 /* Only skip post after fc_ffinit is completed */
1713 if (phba->hba_state) {
1715 word0 = 1; /* This is really setting up word1 */
1718 word0 = 0; /* This is really setting up word1 */
1720 to_slim = (uint8_t *) phba->MBslimaddr + sizeof (uint32_t);
1721 writel(*(uint32_t *) mb, to_slim);
1722 readl(to_slim); /* flush */
1724 lpfc_sli_brdreset(phba);
1726 phba->hba_state = LPFC_INIT_START;
1728 spin_unlock_irq(phba->host->host_lock);
1735 lpfc_hba_down_post(phba);
1741 lpfc_sli_chipset_init(struct lpfc_hba *phba)
1743 uint32_t status, i = 0;
1745 /* Read the HBA Host Status Register */
1746 status = readl(phba->HSregaddr);
1748 /* Check status register to see what current state is */
1750 while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) {
1752 /* Check every 100ms for 5 retries, then every 500ms for 5, then
1753 * every 2.5 sec for 5, then reset board and every 2.5 sec for
1757 /* Adapter failed to init, timeout, status reg
1759 lpfc_printf_log(phba,
1762 "%d:0436 Adapter failed to init, "
1763 "timeout, status reg x%x\n",
1766 phba->hba_state = LPFC_HBA_ERROR;
1770 /* Check to see if any errors occurred during init */
1771 if (status & HS_FFERM) {
1772 /* ERROR: During chipset initialization */
1773 /* Adapter failed to init, chipset, status reg
1775 lpfc_printf_log(phba,
1778 "%d:0437 Adapter failed to init, "
1779 "chipset, status reg x%x\n",
1782 phba->hba_state = LPFC_HBA_ERROR;
1788 } else if (i <= 10) {
1795 phba->hba_state = LPFC_STATE_UNKNOWN; /* Do post */
1796 lpfc_sli_brdrestart(phba);
1798 /* Read the HBA Host Status Register */
1799 status = readl(phba->HSregaddr);
1802 /* Check to see if any errors occurred during init */
1803 if (status & HS_FFERM) {
1804 /* ERROR: During chipset initialization */
1805 /* Adapter failed to init, chipset, status reg <status> */
1806 lpfc_printf_log(phba,
1809 "%d:0438 Adapter failed to init, chipset, "
1813 phba->hba_state = LPFC_HBA_ERROR;
1817 /* Clear all interrupt enable conditions */
1818 writel(0, phba->HCregaddr);
1819 readl(phba->HCregaddr); /* flush */
1821 /* setup host attn register */
1822 writel(0xffffffff, phba->HAregaddr);
1823 readl(phba->HAregaddr); /* flush */
1828 lpfc_sli_hba_setup(struct lpfc_hba * phba)
1831 uint32_t resetcount = 0, rc = 0, done = 0;
1833 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1835 phba->hba_state = LPFC_HBA_ERROR;
1839 while (resetcount < 2 && !done) {
1840 phba->hba_state = LPFC_STATE_UNKNOWN;
1841 lpfc_sli_brdrestart(phba);
1843 rc = lpfc_sli_chipset_init(phba);
1849 /* Call pre CONFIG_PORT mailbox command initialization. A value of 0
1850 * means the call was successful. Any other nonzero value is a failure,
1851 * but if ERESTART is returned, the driver may reset the HBA and try
1854 rc = lpfc_config_port_prep(phba);
1855 if (rc == -ERESTART) {
1856 phba->hba_state = 0;
1862 phba->hba_state = LPFC_INIT_MBX_CMDS;
1863 lpfc_config_port(phba, pmb);
1864 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
1865 if (rc == MBX_SUCCESS)
1868 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1869 "%d:0442 Adapter failed to init, mbxCmd x%x "
1870 "CONFIG_PORT, mbxStatus x%x Data: x%x\n",
1871 phba->brd_no, pmb->mb.mbxCommand,
1872 pmb->mb.mbxStatus, 0);
1873 phba->sli.sli_flag &= ~LPFC_SLI2_ACTIVE;
1877 goto lpfc_sli_hba_setup_error;
1879 rc = lpfc_sli_ring_map(phba, pmb);
1882 goto lpfc_sli_hba_setup_error;
1884 phba->sli.sli_flag |= LPFC_PROCESS_LA;
1886 rc = lpfc_config_port_post(phba);
1888 goto lpfc_sli_hba_setup_error;
1890 goto lpfc_sli_hba_setup_exit;
1891 lpfc_sli_hba_setup_error:
1892 phba->hba_state = LPFC_HBA_ERROR;
1893 lpfc_sli_hba_setup_exit:
1894 mempool_free(pmb, phba->mbox_mem_pool);
1899 lpfc_mbox_abort(struct lpfc_hba * phba)
1901 LPFC_MBOXQ_t *pmbox;
1904 if (phba->sli.mbox_active) {
1905 del_timer_sync(&phba->sli.mbox_tmo);
1906 phba->work_hba_events &= ~WORKER_MBOX_TMO;
1907 pmbox = phba->sli.mbox_active;
1909 phba->sli.mbox_active = NULL;
1910 if (pmbox->mbox_cmpl) {
1911 mb->mbxStatus = MBX_NOT_FINISHED;
1912 (pmbox->mbox_cmpl) (phba, pmbox);
1914 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
1917 /* Abort all the non active mailbox commands. */
1918 spin_lock_irq(phba->host->host_lock);
1919 pmbox = lpfc_mbox_get(phba);
1922 if (pmbox->mbox_cmpl) {
1923 mb->mbxStatus = MBX_NOT_FINISHED;
1924 spin_unlock_irq(phba->host->host_lock);
1925 (pmbox->mbox_cmpl) (phba, pmbox);
1926 spin_lock_irq(phba->host->host_lock);
1928 pmbox = lpfc_mbox_get(phba);
1930 spin_unlock_irq(phba->host->host_lock);
1934 /*! lpfc_mbox_timeout
1938 * \param hba Pointer to per struct lpfc_hba structure
1939 * \param l1 Pointer to the driver's mailbox queue.
1945 * This routine handles mailbox timeout events at timer interrupt context.
1948 lpfc_mbox_timeout(unsigned long ptr)
1950 struct lpfc_hba *phba;
1951 unsigned long iflag;
1953 phba = (struct lpfc_hba *)ptr;
1954 spin_lock_irqsave(phba->host->host_lock, iflag);
1955 if (!(phba->work_hba_events & WORKER_MBOX_TMO)) {
1956 phba->work_hba_events |= WORKER_MBOX_TMO;
1957 if (phba->work_wait)
1958 wake_up(phba->work_wait);
1960 spin_unlock_irqrestore(phba->host->host_lock, iflag);
1964 lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
1966 LPFC_MBOXQ_t *pmbox;
1969 spin_lock_irq(phba->host->host_lock);
1970 if (!(phba->work_hba_events & WORKER_MBOX_TMO)) {
1971 spin_unlock_irq(phba->host->host_lock);
1975 phba->work_hba_events &= ~WORKER_MBOX_TMO;
1977 pmbox = phba->sli.mbox_active;
1980 /* Mbox cmd <mbxCommand> timeout */
1981 lpfc_printf_log(phba,
1984 "%d:0310 Mailbox command x%x timeout Data: x%x x%x x%p\n",
1989 phba->sli.mbox_active);
1991 phba->sli.mbox_active = NULL;
1992 if (pmbox->mbox_cmpl) {
1993 mb->mbxStatus = MBX_NOT_FINISHED;
1994 spin_unlock_irq(phba->host->host_lock);
1995 (pmbox->mbox_cmpl) (phba, pmbox);
1996 spin_lock_irq(phba->host->host_lock);
1998 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2000 spin_unlock_irq(phba->host->host_lock);
2001 lpfc_mbox_abort(phba);
2006 lpfc_sli_issue_mbox(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmbox, uint32_t flag)
2009 struct lpfc_sli *psli;
2010 uint32_t status, evtctr;
2013 unsigned long drvr_flag = 0;
2014 volatile uint32_t word0, ldata;
2015 void __iomem *to_slim;
2019 spin_lock_irqsave(phba->host->host_lock, drvr_flag);
2023 status = MBX_SUCCESS;
2025 if (phba->hba_state == LPFC_HBA_ERROR) {
2026 spin_unlock_irqrestore(phba->host->host_lock, drvr_flag);
2028 /* Mbox command <mbxCommand> cannot issue */
2029 LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
2030 return (MBX_NOT_FINISHED);
2033 if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
2034 /* Polling for a mbox command when another one is already active
2035 * is not allowed in SLI. Also, the driver must have established
2036 * SLI2 mode to queue and process multiple mbox commands.
2039 if (flag & MBX_POLL) {
2040 spin_unlock_irqrestore(phba->host->host_lock,
2043 /* Mbox command <mbxCommand> cannot issue */
2044 LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
2045 return (MBX_NOT_FINISHED);
2048 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE)) {
2049 spin_unlock_irqrestore(phba->host->host_lock,
2051 /* Mbox command <mbxCommand> cannot issue */
2052 LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag)
2053 return (MBX_NOT_FINISHED);
2056 /* Handle STOP IOCB processing flag. This is only meaningful
2057 * if we are not polling for mbox completion.
2059 if (flag & MBX_STOP_IOCB) {
2060 flag &= ~MBX_STOP_IOCB;
2061 /* Now flag each ring */
2062 for (i = 0; i < psli->num_rings; i++) {
2063 /* If the ring is active, flag it */
2064 if (psli->ring[i].cmdringaddr) {
2065 psli->ring[i].flag |=
2071 /* Another mailbox command is still being processed, queue this
2072 * command to be processed later.
2074 lpfc_mbox_put(phba, pmbox);
2076 /* Mbox cmd issue - BUSY */
2077 lpfc_printf_log(phba,
2080 "%d:0308 Mbox cmd issue - BUSY Data: x%x x%x x%x x%x\n",
2087 psli->slistat.mbox_busy++;
2088 spin_unlock_irqrestore(phba->host->host_lock,
2094 /* Handle STOP IOCB processing flag. This is only meaningful
2095 * if we are not polling for mbox completion.
2097 if (flag & MBX_STOP_IOCB) {
2098 flag &= ~MBX_STOP_IOCB;
2099 if (flag == MBX_NOWAIT) {
2100 /* Now flag each ring */
2101 for (i = 0; i < psli->num_rings; i++) {
2102 /* If the ring is active, flag it */
2103 if (psli->ring[i].cmdringaddr) {
2104 psli->ring[i].flag |=
2111 psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
2113 /* If we are not polling, we MUST be in SLI2 mode */
2114 if (flag != MBX_POLL) {
2115 if (!(psli->sli_flag & LPFC_SLI2_ACTIVE) &&
2116 (mb->mbxCommand != MBX_KILL_BOARD)) {
2117 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2118 spin_unlock_irqrestore(phba->host->host_lock,
2120 /* Mbox command <mbxCommand> cannot issue */
2121 LOG_MBOX_CANNOT_ISSUE_DATA( phba, mb, psli, flag);
2122 return (MBX_NOT_FINISHED);
2124 /* timeout active mbox command */
2125 mod_timer(&psli->mbox_tmo, jiffies + HZ * LPFC_MBOX_TMO);
2128 /* Mailbox cmd <cmd> issue */
2129 lpfc_printf_log(phba,
2132 "%d:0309 Mailbox cmd x%x issue Data: x%x x%x x%x\n",
2139 psli->slistat.mbox_cmd++;
2140 evtctr = psli->slistat.mbox_event;
2142 /* next set own bit for the adapter and copy over command word */
2143 mb->mbxOwner = OWN_CHIP;
2145 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2146 /* First copy command data to host SLIM area */
2147 lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx, MAILBOX_CMD_SIZE);
2149 if (mb->mbxCommand == MBX_CONFIG_PORT ||
2150 mb->mbxCommand == MBX_KILL_BOARD) {
2151 /* copy command data into host mbox for cmpl */
2152 lpfc_sli_pcimem_bcopy(mb, &phba->slim2p->mbx,
2156 /* First copy mbox command data to HBA SLIM, skip past first
2158 to_slim = phba->MBslimaddr + sizeof (uint32_t);
2159 lpfc_memcpy_to_slim(to_slim, &mb->un.varWords[0],
2160 MAILBOX_CMD_SIZE - sizeof (uint32_t));
2162 /* Next copy over first word, with mbxOwner set */
2163 ldata = *((volatile uint32_t *)mb);
2164 to_slim = phba->MBslimaddr;
2165 writel(ldata, to_slim);
2166 readl(to_slim); /* flush */
2168 if (mb->mbxCommand == MBX_CONFIG_PORT) {
2169 /* switch over to host mailbox */
2170 psli->sli_flag |= LPFC_SLI2_ACTIVE;
2175 /* interrupt board to doit right away */
2176 writel(CA_MBATT, phba->CAregaddr);
2177 readl(phba->CAregaddr); /* flush */
2181 /* Don't wait for it to finish, just return */
2182 psli->mbox_active = pmbox;
2187 psli->mbox_active = NULL;
2188 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2189 /* First read mbox status word */
2190 word0 = *((volatile uint32_t *)&phba->slim2p->mbx);
2191 word0 = le32_to_cpu(word0);
2193 /* First read mbox status word */
2194 word0 = readl(phba->MBslimaddr);
2197 /* Read the HBA Host Attention Register */
2198 ha_copy = readl(phba->HAregaddr);
2200 /* Wait for command to complete */
2201 while (((word0 & OWN_CHIP) == OWN_CHIP) ||
2202 (!(ha_copy & HA_MBATT) &&
2203 (phba->hba_state > LPFC_WARM_START))) {
2205 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2206 spin_unlock_irqrestore(phba->host->host_lock,
2208 return (MBX_NOT_FINISHED);
2211 /* Check if we took a mbox interrupt while we were
2213 if (((word0 & OWN_CHIP) != OWN_CHIP)
2214 && (evtctr != psli->slistat.mbox_event))
2217 spin_unlock_irqrestore(phba->host->host_lock,
2220 /* Can be in interrupt context, do not sleep */
2221 /* (or might be called with interrupts disabled) */
2224 spin_lock_irqsave(phba->host->host_lock, drvr_flag);
2226 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2227 /* First copy command data */
2228 word0 = *((volatile uint32_t *)
2229 &phba->slim2p->mbx);
2230 word0 = le32_to_cpu(word0);
2231 if (mb->mbxCommand == MBX_CONFIG_PORT) {
2233 volatile uint32_t slimword0;
2234 /* Check real SLIM for any errors */
2235 slimword0 = readl(phba->MBslimaddr);
2236 slimmb = (MAILBOX_t *) & slimword0;
2237 if (((slimword0 & OWN_CHIP) != OWN_CHIP)
2238 && slimmb->mbxStatus) {
2245 /* First copy command data */
2246 word0 = readl(phba->MBslimaddr);
2248 /* Read the HBA Host Attention Register */
2249 ha_copy = readl(phba->HAregaddr);
2252 if (psli->sli_flag & LPFC_SLI2_ACTIVE) {
2253 /* copy results back to user */
2254 lpfc_sli_pcimem_bcopy(&phba->slim2p->mbx, mb,
2257 /* First copy command data */
2258 lpfc_memcpy_from_slim(mb, phba->MBslimaddr,
2260 if ((mb->mbxCommand == MBX_DUMP_MEMORY) &&
2262 lpfc_memcpy_from_slim((void *)pmbox->context2,
2263 phba->MBslimaddr + DMP_RSP_OFFSET,
2264 mb->un.varDmp.word_cnt);
2268 writel(HA_MBATT, phba->HAregaddr);
2269 readl(phba->HAregaddr); /* flush */
2271 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2272 status = mb->mbxStatus;
2275 spin_unlock_irqrestore(phba->host->host_lock, drvr_flag);
2280 lpfc_sli_ringtx_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
2281 struct lpfc_iocbq * piocb)
2283 /* Insert the caller's iocb in the txq tail for later processing. */
2284 list_add_tail(&piocb->list, &pring->txq);
2289 static struct lpfc_iocbq *
2290 lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2291 struct lpfc_iocbq ** piocb)
2293 struct lpfc_iocbq * nextiocb;
2295 nextiocb = lpfc_sli_ringtx_get(phba, pring);
2305 lpfc_sli_issue_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2306 struct lpfc_iocbq *piocb, uint32_t flag)
2308 struct lpfc_iocbq *nextiocb;
2312 * We should never get an IOCB if we are in a < LINK_DOWN state
2314 if (unlikely(phba->hba_state < LPFC_LINK_DOWN))
2318 * Check to see if we are blocking IOCB processing because of a
2319 * outstanding mbox command.
2321 if (unlikely(pring->flag & LPFC_STOP_IOCB_MBX))
2324 if (unlikely(phba->hba_state == LPFC_LINK_DOWN)) {
2326 * Only CREATE_XRI, CLOSE_XRI, ABORT_XRI, and QUE_RING_BUF
2327 * can be issued if the link is not up.
2329 switch (piocb->iocb.ulpCommand) {
2330 case CMD_QUE_RING_BUF_CN:
2331 case CMD_QUE_RING_BUF64_CN:
2333 * For IOCBs, like QUE_RING_BUF, that have no rsp ring
2334 * completion, iocb_cmpl MUST be 0.
2336 if (piocb->iocb_cmpl)
2337 piocb->iocb_cmpl = NULL;
2339 case CMD_CREATE_XRI_CR:
2346 * For FCP commands, we must be in a state where we can process link
2349 } else if (unlikely(pring->ringno == phba->sli.fcp_ring &&
2350 !(phba->sli.sli_flag & LPFC_PROCESS_LA)))
2353 while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
2354 (nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb)))
2355 lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
2358 lpfc_sli_update_ring(phba, pring);
2360 lpfc_sli_update_full_ring(phba, pring);
2363 return IOCB_SUCCESS;
2368 pring->stats.iocb_cmd_delay++;
2372 if (!(flag & SLI_IOCB_RET_IOCB)) {
2373 lpfc_sli_ringtx_put(phba, pring, piocb);
2374 return IOCB_SUCCESS;
2381 lpfc_sli_setup(struct lpfc_hba *phba)
2384 struct lpfc_sli *psli = &phba->sli;
2385 struct lpfc_sli_ring *pring;
2387 psli->num_rings = MAX_CONFIGURED_RINGS;
2389 psli->fcp_ring = LPFC_FCP_RING;
2390 psli->next_ring = LPFC_FCP_NEXT_RING;
2391 psli->ip_ring = LPFC_IP_RING;
2393 psli->iocbq_lookup = NULL;
2394 psli->iocbq_lookup_len = 0;
2395 psli->last_iotag = 0;
2397 for (i = 0; i < psli->num_rings; i++) {
2398 pring = &psli->ring[i];
2400 case LPFC_FCP_RING: /* ring 0 - FCP */
2401 /* numCiocb and numRiocb are used in config_port */
2402 pring->numCiocb = SLI2_IOCB_CMD_R0_ENTRIES;
2403 pring->numRiocb = SLI2_IOCB_RSP_R0_ENTRIES;
2404 pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
2405 pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
2406 pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
2407 pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
2408 pring->iotag_ctr = 0;
2410 (phba->cfg_hba_queue_depth * 2);
2411 pring->fast_iotag = pring->iotag_max;
2412 pring->num_mask = 0;
2414 case LPFC_IP_RING: /* ring 1 - IP */
2415 /* numCiocb and numRiocb are used in config_port */
2416 pring->numCiocb = SLI2_IOCB_CMD_R1_ENTRIES;
2417 pring->numRiocb = SLI2_IOCB_RSP_R1_ENTRIES;
2418 pring->num_mask = 0;
2420 case LPFC_ELS_RING: /* ring 2 - ELS / CT */
2421 /* numCiocb and numRiocb are used in config_port */
2422 pring->numCiocb = SLI2_IOCB_CMD_R2_ENTRIES;
2423 pring->numRiocb = SLI2_IOCB_RSP_R2_ENTRIES;
2424 pring->fast_iotag = 0;
2425 pring->iotag_ctr = 0;
2426 pring->iotag_max = 4096;
2427 pring->num_mask = 4;
2428 pring->prt[0].profile = 0; /* Mask 0 */
2429 pring->prt[0].rctl = FC_ELS_REQ;
2430 pring->prt[0].type = FC_ELS_DATA;
2431 pring->prt[0].lpfc_sli_rcv_unsol_event =
2432 lpfc_els_unsol_event;
2433 pring->prt[1].profile = 0; /* Mask 1 */
2434 pring->prt[1].rctl = FC_ELS_RSP;
2435 pring->prt[1].type = FC_ELS_DATA;
2436 pring->prt[1].lpfc_sli_rcv_unsol_event =
2437 lpfc_els_unsol_event;
2438 pring->prt[2].profile = 0; /* Mask 2 */
2439 /* NameServer Inquiry */
2440 pring->prt[2].rctl = FC_UNSOL_CTL;
2442 pring->prt[2].type = FC_COMMON_TRANSPORT_ULP;
2443 pring->prt[2].lpfc_sli_rcv_unsol_event =
2444 lpfc_ct_unsol_event;
2445 pring->prt[3].profile = 0; /* Mask 3 */
2446 /* NameServer response */
2447 pring->prt[3].rctl = FC_SOL_CTL;
2449 pring->prt[3].type = FC_COMMON_TRANSPORT_ULP;
2450 pring->prt[3].lpfc_sli_rcv_unsol_event =
2451 lpfc_ct_unsol_event;
2454 totiocb += (pring->numCiocb + pring->numRiocb);
2456 if (totiocb > MAX_SLI2_IOCB) {
2457 /* Too many cmd / rsp ring entries in SLI2 SLIM */
2458 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2459 "%d:0462 Too many cmd / rsp ring entries in "
2460 "SLI2 SLIM Data: x%x x%x\n",
2461 phba->brd_no, totiocb, MAX_SLI2_IOCB);
2468 lpfc_sli_queue_setup(struct lpfc_hba * phba)
2470 struct lpfc_sli *psli;
2471 struct lpfc_sli_ring *pring;
2475 spin_lock_irq(phba->host->host_lock);
2476 INIT_LIST_HEAD(&psli->mboxq);
2477 /* Initialize list headers for txq and txcmplq as double linked lists */
2478 for (i = 0; i < psli->num_rings; i++) {
2479 pring = &psli->ring[i];
2481 pring->next_cmdidx = 0;
2482 pring->local_getidx = 0;
2484 INIT_LIST_HEAD(&pring->txq);
2485 INIT_LIST_HEAD(&pring->txcmplq);
2486 INIT_LIST_HEAD(&pring->iocb_continueq);
2487 INIT_LIST_HEAD(&pring->postbufq);
2489 spin_unlock_irq(phba->host->host_lock);
2494 lpfc_sli_hba_down(struct lpfc_hba * phba)
2496 struct lpfc_sli *psli;
2497 struct lpfc_sli_ring *pring;
2499 struct lpfc_iocbq *iocb, *next_iocb;
2500 IOCB_t *icmd = NULL;
2502 unsigned long flags = 0;
2505 lpfc_hba_down_prep(phba);
2507 spin_lock_irqsave(phba->host->host_lock, flags);
2509 for (i = 0; i < psli->num_rings; i++) {
2510 pring = &psli->ring[i];
2511 pring->flag |= LPFC_DEFERRED_RING_EVENT;
2514 * Error everything on the txq since these iocbs have not been
2515 * given to the FW yet.
2519 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
2520 list_del_init(&iocb->list);
2521 if (iocb->iocb_cmpl) {
2523 icmd->ulpStatus = IOSTAT_LOCAL_REJECT;
2524 icmd->un.ulpWord[4] = IOERR_SLI_DOWN;
2525 spin_unlock_irqrestore(phba->host->host_lock,
2527 (iocb->iocb_cmpl) (phba, iocb, iocb);
2528 spin_lock_irqsave(phba->host->host_lock, flags);
2530 lpfc_sli_release_iocbq(phba, iocb);
2533 INIT_LIST_HEAD(&(pring->txq));
2535 kfree(pring->fast_lookup);
2536 pring->fast_lookup = NULL;
2539 spin_unlock_irqrestore(phba->host->host_lock, flags);
2541 /* Return any active mbox cmds */
2542 del_timer_sync(&psli->mbox_tmo);
2543 spin_lock_irqsave(phba->host->host_lock, flags);
2544 phba->work_hba_events &= ~WORKER_MBOX_TMO;
2545 if (psli->mbox_active) {
2546 pmb = psli->mbox_active;
2547 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
2548 if (pmb->mbox_cmpl) {
2549 spin_unlock_irqrestore(phba->host->host_lock, flags);
2550 pmb->mbox_cmpl(phba,pmb);
2551 spin_lock_irqsave(phba->host->host_lock, flags);
2554 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
2555 psli->mbox_active = NULL;
2557 /* Return any pending mbox cmds */
2558 while ((pmb = lpfc_mbox_get(phba)) != NULL) {
2559 pmb->mb.mbxStatus = MBX_NOT_FINISHED;
2560 if (pmb->mbox_cmpl) {
2561 spin_unlock_irqrestore(phba->host->host_lock, flags);
2562 pmb->mbox_cmpl(phba,pmb);
2563 spin_lock_irqsave(phba->host->host_lock, flags);
2567 INIT_LIST_HEAD(&psli->mboxq);
2569 spin_unlock_irqrestore(phba->host->host_lock, flags);
2575 lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt)
2577 uint32_t *src = srcp;
2578 uint32_t *dest = destp;
2582 for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) {
2584 ldata = le32_to_cpu(ldata);
2592 lpfc_sli_ringpostbuf_put(struct lpfc_hba * phba, struct lpfc_sli_ring * pring,
2593 struct lpfc_dmabuf * mp)
2595 /* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up
2597 list_add_tail(&mp->list, &pring->postbufq);
2599 pring->postbufq_cnt++;
2604 struct lpfc_dmabuf *
2605 lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2608 struct lpfc_dmabuf *mp, *next_mp;
2609 struct list_head *slp = &pring->postbufq;
2611 /* Search postbufq, from the begining, looking for a match on phys */
2612 list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
2613 if (mp->phys == phys) {
2614 list_del_init(&mp->list);
2615 pring->postbufq_cnt--;
2620 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2621 "%d:0410 Cannot find virtual addr for mapped buf on "
2622 "ring %d Data x%llx x%p x%p x%x\n",
2623 phba->brd_no, pring->ringno, (unsigned long long)phys,
2624 slp->next, slp->prev, pring->postbufq_cnt);
2629 lpfc_sli_abort_elsreq_cmpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
2630 struct lpfc_iocbq * rspiocb)
2632 struct lpfc_dmabuf *buf_ptr, *buf_ptr1;
2633 /* Free the resources associated with the ELS_REQUEST64 IOCB the driver
2635 * In this case, context2 = cmd, context2->next = rsp, context3 = bpl
2637 if (cmdiocb->context2) {
2638 buf_ptr1 = (struct lpfc_dmabuf *) cmdiocb->context2;
2640 /* Free the response IOCB before completing the abort
2643 list_remove_head((&buf_ptr1->list), buf_ptr,
2644 struct lpfc_dmabuf, list);
2646 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
2649 lpfc_mbuf_free(phba, buf_ptr1->virt, buf_ptr1->phys);
2653 if (cmdiocb->context3) {
2654 buf_ptr = (struct lpfc_dmabuf *) cmdiocb->context3;
2655 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
2659 lpfc_sli_release_iocbq(phba, cmdiocb);
2664 lpfc_sli_issue_abort_iotag32(struct lpfc_hba * phba,
2665 struct lpfc_sli_ring * pring,
2666 struct lpfc_iocbq * cmdiocb)
2668 struct lpfc_iocbq *abtsiocbp;
2669 IOCB_t *icmd = NULL;
2670 IOCB_t *iabt = NULL;
2672 /* issue ABTS for this IOCB based on iotag */
2673 abtsiocbp = lpfc_sli_get_iocbq(phba);
2674 if (abtsiocbp == NULL)
2677 iabt = &abtsiocbp->iocb;
2678 icmd = &cmdiocb->iocb;
2679 switch (icmd->ulpCommand) {
2680 case CMD_ELS_REQUEST64_CR:
2681 /* Even though we abort the ELS command, the firmware may access
2682 * the BPL or other resources before it processes our
2683 * ABORT_MXRI64. Thus we must delay reusing the cmdiocb
2684 * resources till the actual abort request completes.
2686 abtsiocbp->context1 = (void *)((unsigned long)icmd->ulpCommand);
2687 abtsiocbp->context2 = cmdiocb->context2;
2688 abtsiocbp->context3 = cmdiocb->context3;
2689 cmdiocb->context2 = NULL;
2690 cmdiocb->context3 = NULL;
2691 abtsiocbp->iocb_cmpl = lpfc_sli_abort_elsreq_cmpl;
2694 lpfc_sli_release_iocbq(phba, abtsiocbp);
2698 iabt->un.amxri.abortType = ABORT_TYPE_ABTS;
2699 iabt->un.amxri.iotag32 = icmd->un.elsreq64.bdl.ulpIoTag32;
2702 iabt->ulpClass = CLASS3;
2703 iabt->ulpCommand = CMD_ABORT_MXRI64_CN;
2705 if (lpfc_sli_issue_iocb(phba, pring, abtsiocbp, 0) == IOCB_ERROR) {
2706 lpfc_sli_release_iocbq(phba, abtsiocbp);
2714 lpfc_sli_validate_fcp_iocb(struct lpfc_iocbq *iocbq, uint16_t tgt_id,
2715 uint64_t lun_id, uint32_t ctx,
2716 lpfc_ctx_cmd ctx_cmd)
2718 struct lpfc_scsi_buf *lpfc_cmd;
2719 struct scsi_cmnd *cmnd;
2722 if (!(iocbq->iocb_flag & LPFC_IO_FCP))
2725 lpfc_cmd = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq);
2726 cmnd = lpfc_cmd->pCmd;
2733 if ((cmnd->device->id == tgt_id) &&
2734 (cmnd->device->lun == lun_id))
2738 if (cmnd->device->id == tgt_id)
2742 if (iocbq->iocb.ulpContext == ctx)
2749 printk(KERN_ERR "%s: Unknown context cmd type, value %d\n",
2750 __FUNCTION__, ctx_cmd);
2758 lpfc_sli_sum_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2759 uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd ctx_cmd)
2761 struct lpfc_iocbq *iocbq;
2764 for (i = 1, sum = 0; i <= phba->sli.last_iotag; i++) {
2765 iocbq = phba->sli.iocbq_lookup[i];
2767 if (lpfc_sli_validate_fcp_iocb (iocbq, tgt_id, lun_id,
2776 lpfc_sli_abort_fcp_cmpl(struct lpfc_hba * phba, struct lpfc_iocbq * cmdiocb,
2777 struct lpfc_iocbq * rspiocb)
2779 spin_lock_irq(phba->host->host_lock);
2780 lpfc_sli_release_iocbq(phba, cmdiocb);
2781 spin_unlock_irq(phba->host->host_lock);
2786 lpfc_sli_abort_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2787 uint16_t tgt_id, uint64_t lun_id, uint32_t ctx,
2788 lpfc_ctx_cmd abort_cmd)
2790 struct lpfc_iocbq *iocbq;
2791 struct lpfc_iocbq *abtsiocb;
2793 int errcnt = 0, ret_val = 0;
2796 for (i = 1; i <= phba->sli.last_iotag; i++) {
2797 iocbq = phba->sli.iocbq_lookup[i];
2799 if (lpfc_sli_validate_fcp_iocb (iocbq, tgt_id, lun_id,
2803 /* issue ABTS for this IOCB based on iotag */
2804 abtsiocb = lpfc_sli_get_iocbq(phba);
2805 if (abtsiocb == NULL) {
2811 abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS;
2812 abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext;
2813 abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag;
2814 abtsiocb->iocb.ulpLe = 1;
2815 abtsiocb->iocb.ulpClass = cmd->ulpClass;
2817 if (phba->hba_state >= LPFC_LINK_UP)
2818 abtsiocb->iocb.ulpCommand = CMD_ABORT_XRI_CN;
2820 abtsiocb->iocb.ulpCommand = CMD_CLOSE_XRI_CN;
2822 /* Setup callback routine and issue the command. */
2823 abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
2824 ret_val = lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0);
2825 if (ret_val == IOCB_ERROR) {
2826 lpfc_sli_release_iocbq(phba, abtsiocb);
2836 lpfc_sli_wake_iocb_wait(struct lpfc_hba *phba,
2837 struct lpfc_iocbq *cmdiocbq,
2838 struct lpfc_iocbq *rspiocbq)
2840 wait_queue_head_t *pdone_q;
2841 unsigned long iflags;
2843 spin_lock_irqsave(phba->host->host_lock, iflags);
2844 cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
2845 if (cmdiocbq->context2 && rspiocbq)
2846 memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
2847 &rspiocbq->iocb, sizeof(IOCB_t));
2849 pdone_q = cmdiocbq->context_un.wait_queue;
2850 spin_unlock_irqrestore(phba->host->host_lock, iflags);
2857 * Issue the caller's iocb and wait for its completion, but no longer than the
2858 * caller's timeout. Note that iocb_flags is cleared before the
2859 * lpfc_sli_issue_call since the wake routine sets a unique value and by
2860 * definition this is a wait function.
2863 lpfc_sli_issue_iocb_wait(struct lpfc_hba * phba,
2864 struct lpfc_sli_ring * pring,
2865 struct lpfc_iocbq * piocb,
2866 struct lpfc_iocbq * prspiocbq,
2869 DECLARE_WAIT_QUEUE_HEAD(done_q);
2870 long timeleft, timeout_req = 0;
2871 int retval = IOCB_SUCCESS;
2875 * If the caller has provided a response iocbq buffer, then context2
2876 * is NULL or its an error.
2879 if (piocb->context2)
2881 piocb->context2 = prspiocbq;
2884 piocb->iocb_cmpl = lpfc_sli_wake_iocb_wait;
2885 piocb->context_un.wait_queue = &done_q;
2886 piocb->iocb_flag &= ~LPFC_IO_WAKE;
2888 if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
2889 creg_val = readl(phba->HCregaddr);
2890 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
2891 writel(creg_val, phba->HCregaddr);
2892 readl(phba->HCregaddr); /* flush */
2895 retval = lpfc_sli_issue_iocb(phba, pring, piocb, 0);
2896 if (retval == IOCB_SUCCESS) {
2897 timeout_req = timeout * HZ;
2898 spin_unlock_irq(phba->host->host_lock);
2899 timeleft = wait_event_timeout(done_q,
2900 piocb->iocb_flag & LPFC_IO_WAKE,
2902 spin_lock_irq(phba->host->host_lock);
2904 if (timeleft == 0) {
2905 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2906 "%d:0329 IOCB wait timeout error - no "
2907 "wake response Data x%x\n",
2908 phba->brd_no, timeout);
2909 retval = IOCB_TIMEDOUT;
2910 } else if (!(piocb->iocb_flag & LPFC_IO_WAKE)) {
2911 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2912 "%d:0330 IOCB wake NOT set, "
2913 "Data x%x x%lx\n", phba->brd_no,
2914 timeout, (timeleft / jiffies));
2915 retval = IOCB_TIMEDOUT;
2917 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
2918 "%d:0331 IOCB wake signaled\n",
2922 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
2923 "%d:0332 IOCB wait issue failed, Data x%x\n",
2924 phba->brd_no, retval);
2925 retval = IOCB_ERROR;
2928 if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
2929 creg_val = readl(phba->HCregaddr);
2930 creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
2931 writel(creg_val, phba->HCregaddr);
2932 readl(phba->HCregaddr); /* flush */
2936 piocb->context2 = NULL;
2938 piocb->context_un.wait_queue = NULL;
2939 piocb->iocb_cmpl = NULL;
2944 lpfc_sli_issue_mbox_wait(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq,
2947 DECLARE_WAIT_QUEUE_HEAD(done_q);
2948 DECLARE_WAITQUEUE(wq_entry, current);
2949 uint32_t timeleft = 0;
2952 /* The caller must leave context1 empty. */
2953 if (pmboxq->context1 != 0) {
2954 return (MBX_NOT_FINISHED);
2957 /* setup wake call as IOCB callback */
2958 pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait;
2959 /* setup context field to pass wait_queue pointer to wake function */
2960 pmboxq->context1 = &done_q;
2962 /* start to sleep before we wait, to avoid races */
2963 set_current_state(TASK_INTERRUPTIBLE);
2964 add_wait_queue(&done_q, &wq_entry);
2966 /* now issue the command */
2967 retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
2969 if (retval == MBX_BUSY || retval == MBX_SUCCESS) {
2970 timeleft = schedule_timeout(timeout * HZ);
2971 pmboxq->context1 = NULL;
2972 /* if schedule_timeout returns 0, we timed out and were not
2974 if ((timeleft == 0) || signal_pending(current))
2975 retval = MBX_TIMEOUT;
2977 retval = MBX_SUCCESS;
2981 set_current_state(TASK_RUNNING);
2982 remove_wait_queue(&done_q, &wq_entry);
2987 lpfc_intr_handler(int irq, void *dev_id, struct pt_regs * regs)
2989 struct lpfc_hba *phba;
2991 uint32_t work_ha_copy;
2992 unsigned long status;
2997 * Get the driver's phba structure from the dev_id and
2998 * assume the HBA is not interrupting.
3000 phba = (struct lpfc_hba *) dev_id;
3002 if (unlikely(!phba))
3005 phba->sli.slistat.sli_intr++;
3008 * Call the HBA to see if it is interrupting. If not, don't claim
3012 /* Ignore all interrupts during initialization. */
3013 if (unlikely(phba->hba_state < LPFC_LINK_DOWN))
3017 * Read host attention register to determine interrupt source
3018 * Clear Attention Sources, except Error Attention (to
3019 * preserve status) and Link Attention
3021 spin_lock(phba->host->host_lock);
3022 ha_copy = readl(phba->HAregaddr);
3023 writel((ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr);
3024 readl(phba->HAregaddr); /* flush */
3025 spin_unlock(phba->host->host_lock);
3027 if (unlikely(!ha_copy))
3030 work_ha_copy = ha_copy & phba->work_ha_mask;
3032 if (unlikely(work_ha_copy)) {
3033 if (work_ha_copy & HA_LATT) {
3034 if (phba->sli.sli_flag & LPFC_PROCESS_LA) {
3036 * Turn off Link Attention interrupts
3037 * until CLEAR_LA done
3039 spin_lock(phba->host->host_lock);
3040 phba->sli.sli_flag &= ~LPFC_PROCESS_LA;
3041 control = readl(phba->HCregaddr);
3042 control &= ~HC_LAINT_ENA;
3043 writel(control, phba->HCregaddr);
3044 readl(phba->HCregaddr); /* flush */
3045 spin_unlock(phba->host->host_lock);
3048 work_ha_copy &= ~HA_LATT;
3051 if (work_ha_copy & ~(HA_ERATT|HA_MBATT|HA_LATT)) {
3052 for (i = 0; i < phba->sli.num_rings; i++) {
3053 if (work_ha_copy & (HA_RXATT << (4*i))) {
3055 * Turn off Slow Rings interrupts
3057 spin_lock(phba->host->host_lock);
3058 control = readl(phba->HCregaddr);
3059 control &= ~(HC_R0INT_ENA << i);
3060 writel(control, phba->HCregaddr);
3061 readl(phba->HCregaddr); /* flush */
3062 spin_unlock(phba->host->host_lock);
3067 if (work_ha_copy & HA_ERATT) {
3068 phba->hba_state = LPFC_HBA_ERROR;
3070 * There was a link/board error. Read the
3071 * status register to retrieve the error event
3074 phba->sli.slistat.err_attn_event++;
3075 /* Save status info */
3076 phba->work_hs = readl(phba->HSregaddr);
3077 phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
3078 phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
3080 /* Clear Chip error bit */
3081 writel(HA_ERATT, phba->HAregaddr);
3082 readl(phba->HAregaddr); /* flush */
3085 spin_lock(phba->host->host_lock);
3086 phba->work_ha |= work_ha_copy;
3087 if (phba->work_wait)
3088 wake_up(phba->work_wait);
3089 spin_unlock(phba->host->host_lock);
3092 ha_copy &= ~(phba->work_ha_mask);
3095 * Process all events on FCP ring. Take the optimized path for
3096 * FCP IO. Any other IO is slow path and is handled by
3097 * the worker thread.
3099 status = (ha_copy & (HA_RXMASK << (4*LPFC_FCP_RING)));
3100 status >>= (4*LPFC_FCP_RING);
3101 if (status & HA_RXATT)
3102 lpfc_sli_handle_fast_ring_event(phba,
3103 &phba->sli.ring[LPFC_FCP_RING],
3107 } /* lpfc_intr_handler */