1 /*******************************************************************
2 * This file is part of the Emulex Linux Device Driver for *
3 * Fibre Channel Host Bus Adapters. *
4 * Copyright (C) 2004-2008 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>
32 #include <scsi/fc/fc_fs.h>
37 #include "lpfc_sli4.h"
39 #include "lpfc_disc.h"
40 #include "lpfc_scsi.h"
42 #include "lpfc_crtn.h"
43 #include "lpfc_logmsg.h"
44 #include "lpfc_compat.h"
45 #include "lpfc_debugfs.h"
46 #include "lpfc_vport.h"
48 /* There are only four IOCB completion types. */
49 typedef enum _lpfc_iocb_type {
57 /* Provide function prototypes local to this module. */
58 static int lpfc_sli_issue_mbox_s4(struct lpfc_hba *, LPFC_MBOXQ_t *,
60 static int lpfc_sli4_read_rev(struct lpfc_hba *, LPFC_MBOXQ_t *,
61 uint8_t *, uint32_t *);
64 lpfc_get_iocb_from_iocbq(struct lpfc_iocbq *iocbq)
70 * lpfc_sli4_wq_put - Put a Work Queue Entry on an Work Queue
71 * @q: The Work Queue to operate on.
72 * @wqe: The work Queue Entry to put on the Work queue.
74 * This routine will copy the contents of @wqe to the next available entry on
75 * the @q. This function will then ring the Work Queue Doorbell to signal the
76 * HBA to start processing the Work Queue Entry. This function returns 0 if
77 * successful. If no entries are available on @q then this function will return
79 * The caller is expected to hold the hbalock when calling this routine.
82 lpfc_sli4_wq_put(struct lpfc_queue *q, union lpfc_wqe *wqe)
84 union lpfc_wqe *temp_wqe = q->qe[q->host_index].wqe;
85 struct lpfc_register doorbell;
88 /* If the host has not yet processed the next entry then we are done */
89 if (((q->host_index + 1) % q->entry_count) == q->hba_index)
91 /* set consumption flag every once in a while */
92 if (!((q->host_index + 1) % LPFC_RELEASE_NOTIFICATION_INTERVAL))
93 bf_set(lpfc_wqe_gen_wqec, &wqe->generic, 1);
95 lpfc_sli_pcimem_bcopy(wqe, temp_wqe, q->entry_size);
97 /* Update the host index before invoking device */
98 host_index = q->host_index;
99 q->host_index = ((q->host_index + 1) % q->entry_count);
103 bf_set(lpfc_wq_doorbell_num_posted, &doorbell, 1);
104 bf_set(lpfc_wq_doorbell_index, &doorbell, host_index);
105 bf_set(lpfc_wq_doorbell_id, &doorbell, q->queue_id);
106 writel(doorbell.word0, q->phba->sli4_hba.WQDBregaddr);
107 readl(q->phba->sli4_hba.WQDBregaddr); /* Flush */
113 * lpfc_sli4_wq_release - Updates internal hba index for WQ
114 * @q: The Work Queue to operate on.
115 * @index: The index to advance the hba index to.
117 * This routine will update the HBA index of a queue to reflect consumption of
118 * Work Queue Entries by the HBA. When the HBA indicates that it has consumed
119 * an entry the host calls this function to update the queue's internal
120 * pointers. This routine returns the number of entries that were consumed by
124 lpfc_sli4_wq_release(struct lpfc_queue *q, uint32_t index)
126 uint32_t released = 0;
128 if (q->hba_index == index)
131 q->hba_index = ((q->hba_index + 1) % q->entry_count);
133 } while (q->hba_index != index);
138 * lpfc_sli4_mq_put - Put a Mailbox Queue Entry on an Mailbox Queue
139 * @q: The Mailbox Queue to operate on.
140 * @wqe: The Mailbox Queue Entry to put on the Work queue.
142 * This routine will copy the contents of @mqe to the next available entry on
143 * the @q. This function will then ring the Work Queue Doorbell to signal the
144 * HBA to start processing the Work Queue Entry. This function returns 0 if
145 * successful. If no entries are available on @q then this function will return
147 * The caller is expected to hold the hbalock when calling this routine.
150 lpfc_sli4_mq_put(struct lpfc_queue *q, struct lpfc_mqe *mqe)
152 struct lpfc_mqe *temp_mqe = q->qe[q->host_index].mqe;
153 struct lpfc_register doorbell;
156 /* If the host has not yet processed the next entry then we are done */
157 if (((q->host_index + 1) % q->entry_count) == q->hba_index)
159 lpfc_sli_pcimem_bcopy(mqe, temp_mqe, q->entry_size);
160 /* Save off the mailbox pointer for completion */
161 q->phba->mbox = (MAILBOX_t *)temp_mqe;
163 /* Update the host index before invoking device */
164 host_index = q->host_index;
165 q->host_index = ((q->host_index + 1) % q->entry_count);
169 bf_set(lpfc_mq_doorbell_num_posted, &doorbell, 1);
170 bf_set(lpfc_mq_doorbell_id, &doorbell, q->queue_id);
171 writel(doorbell.word0, q->phba->sli4_hba.MQDBregaddr);
172 readl(q->phba->sli4_hba.MQDBregaddr); /* Flush */
177 * lpfc_sli4_mq_release - Updates internal hba index for MQ
178 * @q: The Mailbox Queue to operate on.
180 * This routine will update the HBA index of a queue to reflect consumption of
181 * a Mailbox Queue Entry by the HBA. When the HBA indicates that it has consumed
182 * an entry the host calls this function to update the queue's internal
183 * pointers. This routine returns the number of entries that were consumed by
187 lpfc_sli4_mq_release(struct lpfc_queue *q)
189 /* Clear the mailbox pointer for completion */
190 q->phba->mbox = NULL;
191 q->hba_index = ((q->hba_index + 1) % q->entry_count);
196 * lpfc_sli4_eq_get - Gets the next valid EQE from a EQ
197 * @q: The Event Queue to get the first valid EQE from
199 * This routine will get the first valid Event Queue Entry from @q, update
200 * the queue's internal hba index, and return the EQE. If no valid EQEs are in
201 * the Queue (no more work to do), or the Queue is full of EQEs that have been
202 * processed, but not popped back to the HBA then this routine will return NULL.
204 static struct lpfc_eqe *
205 lpfc_sli4_eq_get(struct lpfc_queue *q)
207 struct lpfc_eqe *eqe = q->qe[q->hba_index].eqe;
209 /* If the next EQE is not valid then we are done */
210 if (!bf_get(lpfc_eqe_valid, eqe))
212 /* If the host has not yet processed the next entry then we are done */
213 if (((q->hba_index + 1) % q->entry_count) == q->host_index)
216 q->hba_index = ((q->hba_index + 1) % q->entry_count);
221 * lpfc_sli4_eq_release - Indicates the host has finished processing an EQ
222 * @q: The Event Queue that the host has completed processing for.
223 * @arm: Indicates whether the host wants to arms this CQ.
225 * This routine will mark all Event Queue Entries on @q, from the last
226 * known completed entry to the last entry that was processed, as completed
227 * by clearing the valid bit for each completion queue entry. Then it will
228 * notify the HBA, by ringing the doorbell, that the EQEs have been processed.
229 * The internal host index in the @q will be updated by this routine to indicate
230 * that the host has finished processing the entries. The @arm parameter
231 * indicates that the queue should be rearmed when ringing the doorbell.
233 * This function will return the number of EQEs that were popped.
236 lpfc_sli4_eq_release(struct lpfc_queue *q, bool arm)
238 uint32_t released = 0;
239 struct lpfc_eqe *temp_eqe;
240 struct lpfc_register doorbell;
242 /* while there are valid entries */
243 while (q->hba_index != q->host_index) {
244 temp_eqe = q->qe[q->host_index].eqe;
245 bf_set(lpfc_eqe_valid, temp_eqe, 0);
247 q->host_index = ((q->host_index + 1) % q->entry_count);
249 if (unlikely(released == 0 && !arm))
252 /* ring doorbell for number popped */
255 bf_set(lpfc_eqcq_doorbell_arm, &doorbell, 1);
256 bf_set(lpfc_eqcq_doorbell_eqci, &doorbell, 1);
258 bf_set(lpfc_eqcq_doorbell_num_released, &doorbell, released);
259 bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_EVENT);
260 bf_set(lpfc_eqcq_doorbell_eqid, &doorbell, q->queue_id);
261 writel(doorbell.word0, q->phba->sli4_hba.EQCQDBregaddr);
266 * lpfc_sli4_cq_get - Gets the next valid CQE from a CQ
267 * @q: The Completion Queue to get the first valid CQE from
269 * This routine will get the first valid Completion Queue Entry from @q, update
270 * the queue's internal hba index, and return the CQE. If no valid CQEs are in
271 * the Queue (no more work to do), or the Queue is full of CQEs that have been
272 * processed, but not popped back to the HBA then this routine will return NULL.
274 static struct lpfc_cqe *
275 lpfc_sli4_cq_get(struct lpfc_queue *q)
277 struct lpfc_cqe *cqe;
279 /* If the next CQE is not valid then we are done */
280 if (!bf_get(lpfc_cqe_valid, q->qe[q->hba_index].cqe))
282 /* If the host has not yet processed the next entry then we are done */
283 if (((q->hba_index + 1) % q->entry_count) == q->host_index)
286 cqe = q->qe[q->hba_index].cqe;
287 q->hba_index = ((q->hba_index + 1) % q->entry_count);
292 * lpfc_sli4_cq_release - Indicates the host has finished processing a CQ
293 * @q: The Completion Queue that the host has completed processing for.
294 * @arm: Indicates whether the host wants to arms this CQ.
296 * This routine will mark all Completion queue entries on @q, from the last
297 * known completed entry to the last entry that was processed, as completed
298 * by clearing the valid bit for each completion queue entry. Then it will
299 * notify the HBA, by ringing the doorbell, that the CQEs have been processed.
300 * The internal host index in the @q will be updated by this routine to indicate
301 * that the host has finished processing the entries. The @arm parameter
302 * indicates that the queue should be rearmed when ringing the doorbell.
304 * This function will return the number of CQEs that were released.
307 lpfc_sli4_cq_release(struct lpfc_queue *q, bool arm)
309 uint32_t released = 0;
310 struct lpfc_cqe *temp_qe;
311 struct lpfc_register doorbell;
313 /* while there are valid entries */
314 while (q->hba_index != q->host_index) {
315 temp_qe = q->qe[q->host_index].cqe;
316 bf_set(lpfc_cqe_valid, temp_qe, 0);
318 q->host_index = ((q->host_index + 1) % q->entry_count);
320 if (unlikely(released == 0 && !arm))
323 /* ring doorbell for number popped */
326 bf_set(lpfc_eqcq_doorbell_arm, &doorbell, 1);
327 bf_set(lpfc_eqcq_doorbell_num_released, &doorbell, released);
328 bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_COMPLETION);
329 bf_set(lpfc_eqcq_doorbell_cqid, &doorbell, q->queue_id);
330 writel(doorbell.word0, q->phba->sli4_hba.EQCQDBregaddr);
335 * lpfc_sli4_rq_put - Put a Receive Buffer Queue Entry on a Receive Queue
336 * @q: The Header Receive Queue to operate on.
337 * @wqe: The Receive Queue Entry to put on the Receive queue.
339 * This routine will copy the contents of @wqe to the next available entry on
340 * the @q. This function will then ring the Receive Queue Doorbell to signal the
341 * HBA to start processing the Receive Queue Entry. This function returns the
342 * index that the rqe was copied to if successful. If no entries are available
343 * on @q then this function will return -ENOMEM.
344 * The caller is expected to hold the hbalock when calling this routine.
347 lpfc_sli4_rq_put(struct lpfc_queue *hq, struct lpfc_queue *dq,
348 struct lpfc_rqe *hrqe, struct lpfc_rqe *drqe)
350 struct lpfc_rqe *temp_hrqe = hq->qe[hq->host_index].rqe;
351 struct lpfc_rqe *temp_drqe = dq->qe[dq->host_index].rqe;
352 struct lpfc_register doorbell;
353 int put_index = hq->host_index;
355 if (hq->type != LPFC_HRQ || dq->type != LPFC_DRQ)
357 if (hq->host_index != dq->host_index)
359 /* If the host has not yet processed the next entry then we are done */
360 if (((hq->host_index + 1) % hq->entry_count) == hq->hba_index)
362 lpfc_sli_pcimem_bcopy(hrqe, temp_hrqe, hq->entry_size);
363 lpfc_sli_pcimem_bcopy(drqe, temp_drqe, dq->entry_size);
365 /* Update the host index to point to the next slot */
366 hq->host_index = ((hq->host_index + 1) % hq->entry_count);
367 dq->host_index = ((dq->host_index + 1) % dq->entry_count);
369 /* Ring The Header Receive Queue Doorbell */
370 if (!(hq->host_index % LPFC_RQ_POST_BATCH)) {
372 bf_set(lpfc_rq_doorbell_num_posted, &doorbell,
374 bf_set(lpfc_rq_doorbell_id, &doorbell, hq->queue_id);
375 writel(doorbell.word0, hq->phba->sli4_hba.RQDBregaddr);
381 * lpfc_sli4_rq_release - Updates internal hba index for RQ
382 * @q: The Header Receive Queue to operate on.
384 * This routine will update the HBA index of a queue to reflect consumption of
385 * one Receive Queue Entry by the HBA. When the HBA indicates that it has
386 * consumed an entry the host calls this function to update the queue's
387 * internal pointers. This routine returns the number of entries that were
388 * consumed by the HBA.
391 lpfc_sli4_rq_release(struct lpfc_queue *hq, struct lpfc_queue *dq)
393 if ((hq->type != LPFC_HRQ) || (dq->type != LPFC_DRQ))
395 hq->hba_index = ((hq->hba_index + 1) % hq->entry_count);
396 dq->hba_index = ((dq->hba_index + 1) % dq->entry_count);
401 * lpfc_cmd_iocb - Get next command iocb entry in the ring
402 * @phba: Pointer to HBA context object.
403 * @pring: Pointer to driver SLI ring object.
405 * This function returns pointer to next command iocb entry
406 * in the command ring. The caller must hold hbalock to prevent
407 * other threads consume the next command iocb.
408 * SLI-2/SLI-3 provide different sized iocbs.
410 static inline IOCB_t *
411 lpfc_cmd_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
413 return (IOCB_t *) (((char *) pring->cmdringaddr) +
414 pring->cmdidx * phba->iocb_cmd_size);
418 * lpfc_resp_iocb - Get next response iocb entry in the ring
419 * @phba: Pointer to HBA context object.
420 * @pring: Pointer to driver SLI ring object.
422 * This function returns pointer to next response iocb entry
423 * in the response ring. The caller must hold hbalock to make sure
424 * that no other thread consume the next response iocb.
425 * SLI-2/SLI-3 provide different sized iocbs.
427 static inline IOCB_t *
428 lpfc_resp_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
430 return (IOCB_t *) (((char *) pring->rspringaddr) +
431 pring->rspidx * phba->iocb_rsp_size);
435 * __lpfc_sli_get_iocbq - Allocates an iocb object from iocb pool
436 * @phba: Pointer to HBA context object.
438 * This function is called with hbalock held. This function
439 * allocates a new driver iocb object from the iocb pool. If the
440 * allocation is successful, it returns pointer to the newly
441 * allocated iocb object else it returns NULL.
443 static struct lpfc_iocbq *
444 __lpfc_sli_get_iocbq(struct lpfc_hba *phba)
446 struct list_head *lpfc_iocb_list = &phba->lpfc_iocb_list;
447 struct lpfc_iocbq * iocbq = NULL;
449 list_remove_head(lpfc_iocb_list, iocbq, struct lpfc_iocbq, list);
454 * __lpfc_clear_active_sglq - Remove the active sglq for this XRI.
455 * @phba: Pointer to HBA context object.
456 * @xritag: XRI value.
458 * This function clears the sglq pointer from the array of acive
459 * sglq's. The xritag that is passed in is used to index into the
460 * array. Before the xritag can be used it needs to be adjusted
461 * by subtracting the xribase.
463 * Returns sglq ponter = success, NULL = Failure.
465 static struct lpfc_sglq *
466 __lpfc_clear_active_sglq(struct lpfc_hba *phba, uint16_t xritag)
469 struct lpfc_sglq *sglq;
470 adj_xri = xritag - phba->sli4_hba.max_cfg_param.xri_base;
471 if (adj_xri > phba->sli4_hba.max_cfg_param.max_xri)
473 sglq = phba->sli4_hba.lpfc_sglq_active_list[adj_xri];
474 phba->sli4_hba.lpfc_sglq_active_list[adj_xri] = NULL;
479 * __lpfc_get_active_sglq - Get the active sglq for this XRI.
480 * @phba: Pointer to HBA context object.
481 * @xritag: XRI value.
483 * This function returns the sglq pointer from the array of acive
484 * sglq's. The xritag that is passed in is used to index into the
485 * array. Before the xritag can be used it needs to be adjusted
486 * by subtracting the xribase.
488 * Returns sglq ponter = success, NULL = Failure.
490 static struct lpfc_sglq *
491 __lpfc_get_active_sglq(struct lpfc_hba *phba, uint16_t xritag)
494 struct lpfc_sglq *sglq;
495 adj_xri = xritag - phba->sli4_hba.max_cfg_param.xri_base;
496 if (adj_xri > phba->sli4_hba.max_cfg_param.max_xri)
498 sglq = phba->sli4_hba.lpfc_sglq_active_list[adj_xri];
503 * __lpfc_sli_get_sglq - Allocates an iocb object from sgl pool
504 * @phba: Pointer to HBA context object.
506 * This function is called with hbalock held. This function
507 * Gets a new driver sglq object from the sglq list. If the
508 * list is not empty then it is successful, it returns pointer to the newly
509 * allocated sglq object else it returns NULL.
511 static struct lpfc_sglq *
512 __lpfc_sli_get_sglq(struct lpfc_hba *phba)
514 struct list_head *lpfc_sgl_list = &phba->sli4_hba.lpfc_sgl_list;
515 struct lpfc_sglq *sglq = NULL;
517 list_remove_head(lpfc_sgl_list, sglq, struct lpfc_sglq, list);
518 adj_xri = sglq->sli4_xritag - phba->sli4_hba.max_cfg_param.xri_base;
519 phba->sli4_hba.lpfc_sglq_active_list[adj_xri] = sglq;
524 * lpfc_sli_get_iocbq - Allocates an iocb object from iocb pool
525 * @phba: Pointer to HBA context object.
527 * This function is called with no lock held. This function
528 * allocates a new driver iocb object from the iocb pool. If the
529 * allocation is successful, it returns pointer to the newly
530 * allocated iocb object else it returns NULL.
533 lpfc_sli_get_iocbq(struct lpfc_hba *phba)
535 struct lpfc_iocbq * iocbq = NULL;
536 unsigned long iflags;
538 spin_lock_irqsave(&phba->hbalock, iflags);
539 iocbq = __lpfc_sli_get_iocbq(phba);
540 spin_unlock_irqrestore(&phba->hbalock, iflags);
545 * __lpfc_sli_release_iocbq_s4 - Release iocb to the iocb pool
546 * @phba: Pointer to HBA context object.
547 * @iocbq: Pointer to driver iocb object.
549 * This function is called with hbalock held to release driver
550 * iocb object to the iocb pool. The iotag in the iocb object
551 * does not change for each use of the iocb object. This function
552 * clears all other fields of the iocb object when it is freed.
553 * The sqlq structure that holds the xritag and phys and virtual
554 * mappings for the scatter gather list is retrieved from the
555 * active array of sglq. The get of the sglq pointer also clears
556 * the entry in the array. If the status of the IO indiactes that
557 * this IO was aborted then the sglq entry it put on the
558 * lpfc_abts_els_sgl_list until the CQ_ABORTED_XRI is received. If the
559 * IO has good status or fails for any other reason then the sglq
560 * entry is added to the free list (lpfc_sgl_list).
563 __lpfc_sli_release_iocbq_s4(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
565 struct lpfc_sglq *sglq;
566 size_t start_clean = offsetof(struct lpfc_iocbq, iocb);
569 if (iocbq->sli4_xritag == NO_XRI)
572 sglq = __lpfc_clear_active_sglq(phba, iocbq->sli4_xritag);
574 if (iocbq->iocb_flag & LPFC_DRIVER_ABORTED
575 || ((iocbq->iocb.ulpStatus == IOSTAT_LOCAL_REJECT)
576 && (iocbq->iocb.un.ulpWord[4]
577 == IOERR_SLI_ABORTED))) {
578 spin_lock_irqsave(&phba->sli4_hba.abts_sgl_list_lock,
580 list_add(&sglq->list,
581 &phba->sli4_hba.lpfc_abts_els_sgl_list);
582 spin_unlock_irqrestore(
583 &phba->sli4_hba.abts_sgl_list_lock, iflag);
585 list_add(&sglq->list, &phba->sli4_hba.lpfc_sgl_list);
590 * Clean all volatile data fields, preserve iotag and node struct.
592 memset((char *)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
593 iocbq->sli4_xritag = NO_XRI;
594 list_add_tail(&iocbq->list, &phba->lpfc_iocb_list);
598 * __lpfc_sli_release_iocbq_s3 - Release iocb to the iocb pool
599 * @phba: Pointer to HBA context object.
600 * @iocbq: Pointer to driver iocb object.
602 * This function is called with hbalock held to release driver
603 * iocb object to the iocb pool. The iotag in the iocb object
604 * does not change for each use of the iocb object. This function
605 * clears all other fields of the iocb object when it is freed.
608 __lpfc_sli_release_iocbq_s3(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
610 size_t start_clean = offsetof(struct lpfc_iocbq, iocb);
613 * Clean all volatile data fields, preserve iotag and node struct.
615 memset((char*)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
616 iocbq->sli4_xritag = NO_XRI;
617 list_add_tail(&iocbq->list, &phba->lpfc_iocb_list);
621 * __lpfc_sli_release_iocbq - Release iocb to the iocb pool
622 * @phba: Pointer to HBA context object.
623 * @iocbq: Pointer to driver iocb object.
625 * This function is called with hbalock held to release driver
626 * iocb object to the iocb pool. The iotag in the iocb object
627 * does not change for each use of the iocb object. This function
628 * clears all other fields of the iocb object when it is freed.
631 __lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
633 phba->__lpfc_sli_release_iocbq(phba, iocbq);
637 * lpfc_sli_release_iocbq - Release iocb to the iocb pool
638 * @phba: Pointer to HBA context object.
639 * @iocbq: Pointer to driver iocb object.
641 * This function is called with no lock held to release the iocb to
645 lpfc_sli_release_iocbq(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
647 unsigned long iflags;
650 * Clean all volatile data fields, preserve iotag and node struct.
652 spin_lock_irqsave(&phba->hbalock, iflags);
653 __lpfc_sli_release_iocbq(phba, iocbq);
654 spin_unlock_irqrestore(&phba->hbalock, iflags);
658 * lpfc_sli_cancel_iocbs - Cancel all iocbs from a list.
659 * @phba: Pointer to HBA context object.
660 * @iocblist: List of IOCBs.
661 * @ulpstatus: ULP status in IOCB command field.
662 * @ulpWord4: ULP word-4 in IOCB command field.
664 * This function is called with a list of IOCBs to cancel. It cancels the IOCB
665 * on the list by invoking the complete callback function associated with the
666 * IOCB with the provided @ulpstatus and @ulpword4 set to the IOCB commond
670 lpfc_sli_cancel_iocbs(struct lpfc_hba *phba, struct list_head *iocblist,
671 uint32_t ulpstatus, uint32_t ulpWord4)
673 struct lpfc_iocbq *piocb;
675 while (!list_empty(iocblist)) {
676 list_remove_head(iocblist, piocb, struct lpfc_iocbq, list);
678 if (!piocb->iocb_cmpl)
679 lpfc_sli_release_iocbq(phba, piocb);
681 piocb->iocb.ulpStatus = ulpstatus;
682 piocb->iocb.un.ulpWord[4] = ulpWord4;
683 (piocb->iocb_cmpl) (phba, piocb, piocb);
690 * lpfc_sli_iocb_cmd_type - Get the iocb type
691 * @iocb_cmnd: iocb command code.
693 * This function is called by ring event handler function to get the iocb type.
694 * This function translates the iocb command to an iocb command type used to
695 * decide the final disposition of each completed IOCB.
696 * The function returns
697 * LPFC_UNKNOWN_IOCB if it is an unsupported iocb
698 * LPFC_SOL_IOCB if it is a solicited iocb completion
699 * LPFC_ABORT_IOCB if it is an abort iocb
700 * LPFC_UNSOL_IOCB if it is an unsolicited iocb
702 * The caller is not required to hold any lock.
704 static lpfc_iocb_type
705 lpfc_sli_iocb_cmd_type(uint8_t iocb_cmnd)
707 lpfc_iocb_type type = LPFC_UNKNOWN_IOCB;
709 if (iocb_cmnd > CMD_MAX_IOCB_CMD)
713 case CMD_XMIT_SEQUENCE_CR:
714 case CMD_XMIT_SEQUENCE_CX:
715 case CMD_XMIT_BCAST_CN:
716 case CMD_XMIT_BCAST_CX:
717 case CMD_ELS_REQUEST_CR:
718 case CMD_ELS_REQUEST_CX:
719 case CMD_CREATE_XRI_CR:
720 case CMD_CREATE_XRI_CX:
722 case CMD_XMIT_ELS_RSP_CX:
724 case CMD_FCP_IWRITE_CR:
725 case CMD_FCP_IWRITE_CX:
726 case CMD_FCP_IREAD_CR:
727 case CMD_FCP_IREAD_CX:
728 case CMD_FCP_ICMND_CR:
729 case CMD_FCP_ICMND_CX:
730 case CMD_FCP_TSEND_CX:
731 case CMD_FCP_TRSP_CX:
732 case CMD_FCP_TRECEIVE_CX:
733 case CMD_FCP_AUTO_TRSP_CX:
734 case CMD_ADAPTER_MSG:
735 case CMD_ADAPTER_DUMP:
736 case CMD_XMIT_SEQUENCE64_CR:
737 case CMD_XMIT_SEQUENCE64_CX:
738 case CMD_XMIT_BCAST64_CN:
739 case CMD_XMIT_BCAST64_CX:
740 case CMD_ELS_REQUEST64_CR:
741 case CMD_ELS_REQUEST64_CX:
742 case CMD_FCP_IWRITE64_CR:
743 case CMD_FCP_IWRITE64_CX:
744 case CMD_FCP_IREAD64_CR:
745 case CMD_FCP_IREAD64_CX:
746 case CMD_FCP_ICMND64_CR:
747 case CMD_FCP_ICMND64_CX:
748 case CMD_FCP_TSEND64_CX:
749 case CMD_FCP_TRSP64_CX:
750 case CMD_FCP_TRECEIVE64_CX:
751 case CMD_GEN_REQUEST64_CR:
752 case CMD_GEN_REQUEST64_CX:
753 case CMD_XMIT_ELS_RSP64_CX:
754 case DSSCMD_IWRITE64_CR:
755 case DSSCMD_IWRITE64_CX:
756 case DSSCMD_IREAD64_CR:
757 case DSSCMD_IREAD64_CX:
758 case DSSCMD_INVALIDATE_DEK:
760 case DSSCMD_GET_KEK_ID:
761 case DSSCMD_GEN_XFER:
762 type = LPFC_SOL_IOCB;
764 case CMD_ABORT_XRI_CN:
765 case CMD_ABORT_XRI_CX:
766 case CMD_CLOSE_XRI_CN:
767 case CMD_CLOSE_XRI_CX:
768 case CMD_XRI_ABORTED_CX:
769 case CMD_ABORT_MXRI64_CN:
770 type = LPFC_ABORT_IOCB;
772 case CMD_RCV_SEQUENCE_CX:
773 case CMD_RCV_ELS_REQ_CX:
774 case CMD_RCV_SEQUENCE64_CX:
775 case CMD_RCV_ELS_REQ64_CX:
776 case CMD_ASYNC_STATUS:
777 case CMD_IOCB_RCV_SEQ64_CX:
778 case CMD_IOCB_RCV_ELS64_CX:
779 case CMD_IOCB_RCV_CONT64_CX:
780 case CMD_IOCB_RET_XRI64_CX:
781 type = LPFC_UNSOL_IOCB;
783 case CMD_IOCB_XMIT_MSEQ64_CR:
784 case CMD_IOCB_XMIT_MSEQ64_CX:
785 case CMD_IOCB_RCV_SEQ_LIST64_CX:
786 case CMD_IOCB_RCV_ELS_LIST64_CX:
787 case CMD_IOCB_CLOSE_EXTENDED_CN:
788 case CMD_IOCB_ABORT_EXTENDED_CN:
789 case CMD_IOCB_RET_HBQE64_CN:
790 case CMD_IOCB_FCP_IBIDIR64_CR:
791 case CMD_IOCB_FCP_IBIDIR64_CX:
792 case CMD_IOCB_FCP_ITASKMGT64_CX:
793 case CMD_IOCB_LOGENTRY_CN:
794 case CMD_IOCB_LOGENTRY_ASYNC_CN:
795 printk("%s - Unhandled SLI-3 Command x%x\n",
796 __func__, iocb_cmnd);
797 type = LPFC_UNKNOWN_IOCB;
800 type = LPFC_UNKNOWN_IOCB;
808 * lpfc_sli_ring_map - Issue config_ring mbox for all rings
809 * @phba: Pointer to HBA context object.
811 * This function is called from SLI initialization code
812 * to configure every ring of the HBA's SLI interface. The
813 * caller is not required to hold any lock. This function issues
814 * a config_ring mailbox command for each ring.
815 * This function returns zero if successful else returns a negative
819 lpfc_sli_ring_map(struct lpfc_hba *phba)
821 struct lpfc_sli *psli = &phba->sli;
826 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
830 phba->link_state = LPFC_INIT_MBX_CMDS;
831 for (i = 0; i < psli->num_rings; i++) {
832 lpfc_config_ring(phba, i, pmb);
833 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
834 if (rc != MBX_SUCCESS) {
835 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
836 "0446 Adapter failed to init (%d), "
837 "mbxCmd x%x CFG_RING, mbxStatus x%x, "
839 rc, pmbox->mbxCommand,
840 pmbox->mbxStatus, i);
841 phba->link_state = LPFC_HBA_ERROR;
846 mempool_free(pmb, phba->mbox_mem_pool);
851 * lpfc_sli_ringtxcmpl_put - Adds new iocb to the txcmplq
852 * @phba: Pointer to HBA context object.
853 * @pring: Pointer to driver SLI ring object.
854 * @piocb: Pointer to the driver iocb object.
856 * This function is called with hbalock held. The function adds the
857 * new iocb to txcmplq of the given ring. This function always returns
858 * 0. If this function is called for ELS ring, this function checks if
859 * there is a vport associated with the ELS command. This function also
860 * starts els_tmofunc timer if this is an ELS command.
863 lpfc_sli_ringtxcmpl_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
864 struct lpfc_iocbq *piocb)
866 list_add_tail(&piocb->list, &pring->txcmplq);
867 pring->txcmplq_cnt++;
868 if ((unlikely(pring->ringno == LPFC_ELS_RING)) &&
869 (piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) &&
870 (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN)) {
874 mod_timer(&piocb->vport->els_tmofunc,
875 jiffies + HZ * (phba->fc_ratov << 1));
883 * lpfc_sli_ringtx_get - Get first element of the txq
884 * @phba: Pointer to HBA context object.
885 * @pring: Pointer to driver SLI ring object.
887 * This function is called with hbalock held to get next
888 * iocb in txq of the given ring. If there is any iocb in
889 * the txq, the function returns first iocb in the list after
890 * removing the iocb from the list, else it returns NULL.
892 static struct lpfc_iocbq *
893 lpfc_sli_ringtx_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
895 struct lpfc_iocbq *cmd_iocb;
897 list_remove_head((&pring->txq), cmd_iocb, struct lpfc_iocbq, list);
898 if (cmd_iocb != NULL)
904 * lpfc_sli_next_iocb_slot - Get next iocb slot in the ring
905 * @phba: Pointer to HBA context object.
906 * @pring: Pointer to driver SLI ring object.
908 * This function is called with hbalock held and the caller must post the
909 * iocb without releasing the lock. If the caller releases the lock,
910 * iocb slot returned by the function is not guaranteed to be available.
911 * The function returns pointer to the next available iocb slot if there
912 * is available slot in the ring, else it returns NULL.
913 * If the get index of the ring is ahead of the put index, the function
914 * will post an error attention event to the worker thread to take the
915 * HBA to offline state.
918 lpfc_sli_next_iocb_slot (struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
920 struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno];
921 uint32_t max_cmd_idx = pring->numCiocb;
922 if ((pring->next_cmdidx == pring->cmdidx) &&
923 (++pring->next_cmdidx >= max_cmd_idx))
924 pring->next_cmdidx = 0;
926 if (unlikely(pring->local_getidx == pring->next_cmdidx)) {
928 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
930 if (unlikely(pring->local_getidx >= max_cmd_idx)) {
931 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
932 "0315 Ring %d issue: portCmdGet %d "
933 "is bigger than cmd ring %d\n",
935 pring->local_getidx, max_cmd_idx);
937 phba->link_state = LPFC_HBA_ERROR;
939 * All error attention handlers are posted to
942 phba->work_ha |= HA_ERATT;
943 phba->work_hs = HS_FFER3;
945 lpfc_worker_wake_up(phba);
950 if (pring->local_getidx == pring->next_cmdidx)
954 return lpfc_cmd_iocb(phba, pring);
958 * lpfc_sli_next_iotag - Get an iotag for the iocb
959 * @phba: Pointer to HBA context object.
960 * @iocbq: Pointer to driver iocb object.
962 * This function gets an iotag for the iocb. If there is no unused iotag and
963 * the iocbq_lookup_len < 0xffff, this function allocates a bigger iotag_lookup
964 * array and assigns a new iotag.
965 * The function returns the allocated iotag if successful, else returns zero.
966 * Zero is not a valid iotag.
967 * The caller is not required to hold any lock.
970 lpfc_sli_next_iotag(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
972 struct lpfc_iocbq **new_arr;
973 struct lpfc_iocbq **old_arr;
975 struct lpfc_sli *psli = &phba->sli;
978 spin_lock_irq(&phba->hbalock);
979 iotag = psli->last_iotag;
980 if(++iotag < psli->iocbq_lookup_len) {
981 psli->last_iotag = iotag;
982 psli->iocbq_lookup[iotag] = iocbq;
983 spin_unlock_irq(&phba->hbalock);
984 iocbq->iotag = iotag;
986 } else if (psli->iocbq_lookup_len < (0xffff
987 - LPFC_IOCBQ_LOOKUP_INCREMENT)) {
988 new_len = psli->iocbq_lookup_len + LPFC_IOCBQ_LOOKUP_INCREMENT;
989 spin_unlock_irq(&phba->hbalock);
990 new_arr = kzalloc(new_len * sizeof (struct lpfc_iocbq *),
993 spin_lock_irq(&phba->hbalock);
994 old_arr = psli->iocbq_lookup;
995 if (new_len <= psli->iocbq_lookup_len) {
996 /* highly unprobable case */
998 iotag = psli->last_iotag;
999 if(++iotag < psli->iocbq_lookup_len) {
1000 psli->last_iotag = iotag;
1001 psli->iocbq_lookup[iotag] = iocbq;
1002 spin_unlock_irq(&phba->hbalock);
1003 iocbq->iotag = iotag;
1006 spin_unlock_irq(&phba->hbalock);
1009 if (psli->iocbq_lookup)
1010 memcpy(new_arr, old_arr,
1011 ((psli->last_iotag + 1) *
1012 sizeof (struct lpfc_iocbq *)));
1013 psli->iocbq_lookup = new_arr;
1014 psli->iocbq_lookup_len = new_len;
1015 psli->last_iotag = iotag;
1016 psli->iocbq_lookup[iotag] = iocbq;
1017 spin_unlock_irq(&phba->hbalock);
1018 iocbq->iotag = iotag;
1023 spin_unlock_irq(&phba->hbalock);
1025 lpfc_printf_log(phba, KERN_ERR,LOG_SLI,
1026 "0318 Failed to allocate IOTAG.last IOTAG is %d\n",
1033 * lpfc_sli_submit_iocb - Submit an iocb to the firmware
1034 * @phba: Pointer to HBA context object.
1035 * @pring: Pointer to driver SLI ring object.
1036 * @iocb: Pointer to iocb slot in the ring.
1037 * @nextiocb: Pointer to driver iocb object which need to be
1038 * posted to firmware.
1040 * This function is called with hbalock held to post a new iocb to
1041 * the firmware. This function copies the new iocb to ring iocb slot and
1042 * updates the ring pointers. It adds the new iocb to txcmplq if there is
1043 * a completion call back for this iocb else the function will free the
1047 lpfc_sli_submit_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
1048 IOCB_t *iocb, struct lpfc_iocbq *nextiocb)
1053 nextiocb->iocb.ulpIoTag = (nextiocb->iocb_cmpl) ? nextiocb->iotag : 0;
1056 if (pring->ringno == LPFC_ELS_RING) {
1057 lpfc_debugfs_slow_ring_trc(phba,
1058 "IOCB cmd ring: wd4:x%08x wd6:x%08x wd7:x%08x",
1059 *(((uint32_t *) &nextiocb->iocb) + 4),
1060 *(((uint32_t *) &nextiocb->iocb) + 6),
1061 *(((uint32_t *) &nextiocb->iocb) + 7));
1065 * Issue iocb command to adapter
1067 lpfc_sli_pcimem_bcopy(&nextiocb->iocb, iocb, phba->iocb_cmd_size);
1069 pring->stats.iocb_cmd++;
1072 * If there is no completion routine to call, we can release the
1073 * IOCB buffer back right now. For IOCBs, like QUE_RING_BUF,
1074 * that have no rsp ring completion, iocb_cmpl MUST be NULL.
1076 if (nextiocb->iocb_cmpl)
1077 lpfc_sli_ringtxcmpl_put(phba, pring, nextiocb);
1079 __lpfc_sli_release_iocbq(phba, nextiocb);
1082 * Let the HBA know what IOCB slot will be the next one the
1083 * driver will put a command into.
1085 pring->cmdidx = pring->next_cmdidx;
1086 writel(pring->cmdidx, &phba->host_gp[pring->ringno].cmdPutInx);
1090 * lpfc_sli_update_full_ring - Update the chip attention register
1091 * @phba: Pointer to HBA context object.
1092 * @pring: Pointer to driver SLI ring object.
1094 * The caller is not required to hold any lock for calling this function.
1095 * This function updates the chip attention bits for the ring to inform firmware
1096 * that there are pending work to be done for this ring and requests an
1097 * interrupt when there is space available in the ring. This function is
1098 * called when the driver is unable to post more iocbs to the ring due
1099 * to unavailability of space in the ring.
1102 lpfc_sli_update_full_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1104 int ringno = pring->ringno;
1106 pring->flag |= LPFC_CALL_RING_AVAILABLE;
1111 * Set ring 'ringno' to SET R0CE_REQ in Chip Att register.
1112 * The HBA will tell us when an IOCB entry is available.
1114 writel((CA_R0ATT|CA_R0CE_REQ) << (ringno*4), phba->CAregaddr);
1115 readl(phba->CAregaddr); /* flush */
1117 pring->stats.iocb_cmd_full++;
1121 * lpfc_sli_update_ring - Update chip attention register
1122 * @phba: Pointer to HBA context object.
1123 * @pring: Pointer to driver SLI ring object.
1125 * This function updates the chip attention register bit for the
1126 * given ring to inform HBA that there is more work to be done
1127 * in this ring. The caller is not required to hold any lock.
1130 lpfc_sli_update_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1132 int ringno = pring->ringno;
1135 * Tell the HBA that there is work to do in this ring.
1137 if (!(phba->sli3_options & LPFC_SLI3_CRP_ENABLED)) {
1139 writel(CA_R0ATT << (ringno * 4), phba->CAregaddr);
1140 readl(phba->CAregaddr); /* flush */
1145 * lpfc_sli_resume_iocb - Process iocbs in the txq
1146 * @phba: Pointer to HBA context object.
1147 * @pring: Pointer to driver SLI ring object.
1149 * This function is called with hbalock held to post pending iocbs
1150 * in the txq to the firmware. This function is called when driver
1151 * detects space available in the ring.
1154 lpfc_sli_resume_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
1157 struct lpfc_iocbq *nextiocb;
1161 * (a) there is anything on the txq to send
1163 * (c) link attention events can be processed (fcp ring only)
1164 * (d) IOCB processing is not blocked by the outstanding mbox command.
1166 if (pring->txq_cnt &&
1167 lpfc_is_link_up(phba) &&
1168 (pring->ringno != phba->sli.fcp_ring ||
1169 phba->sli.sli_flag & LPFC_PROCESS_LA)) {
1171 while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
1172 (nextiocb = lpfc_sli_ringtx_get(phba, pring)))
1173 lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
1176 lpfc_sli_update_ring(phba, pring);
1178 lpfc_sli_update_full_ring(phba, pring);
1185 * lpfc_sli_next_hbq_slot - Get next hbq entry for the HBQ
1186 * @phba: Pointer to HBA context object.
1187 * @hbqno: HBQ number.
1189 * This function is called with hbalock held to get the next
1190 * available slot for the given HBQ. If there is free slot
1191 * available for the HBQ it will return pointer to the next available
1192 * HBQ entry else it will return NULL.
1194 static struct lpfc_hbq_entry *
1195 lpfc_sli_next_hbq_slot(struct lpfc_hba *phba, uint32_t hbqno)
1197 struct hbq_s *hbqp = &phba->hbqs[hbqno];
1199 if (hbqp->next_hbqPutIdx == hbqp->hbqPutIdx &&
1200 ++hbqp->next_hbqPutIdx >= hbqp->entry_count)
1201 hbqp->next_hbqPutIdx = 0;
1203 if (unlikely(hbqp->local_hbqGetIdx == hbqp->next_hbqPutIdx)) {
1204 uint32_t raw_index = phba->hbq_get[hbqno];
1205 uint32_t getidx = le32_to_cpu(raw_index);
1207 hbqp->local_hbqGetIdx = getidx;
1209 if (unlikely(hbqp->local_hbqGetIdx >= hbqp->entry_count)) {
1210 lpfc_printf_log(phba, KERN_ERR,
1211 LOG_SLI | LOG_VPORT,
1212 "1802 HBQ %d: local_hbqGetIdx "
1213 "%u is > than hbqp->entry_count %u\n",
1214 hbqno, hbqp->local_hbqGetIdx,
1217 phba->link_state = LPFC_HBA_ERROR;
1221 if (hbqp->local_hbqGetIdx == hbqp->next_hbqPutIdx)
1225 return (struct lpfc_hbq_entry *) phba->hbqs[hbqno].hbq_virt +
1230 * lpfc_sli_hbqbuf_free_all - Free all the hbq buffers
1231 * @phba: Pointer to HBA context object.
1233 * This function is called with no lock held to free all the
1234 * hbq buffers while uninitializing the SLI interface. It also
1235 * frees the HBQ buffers returned by the firmware but not yet
1236 * processed by the upper layers.
1239 lpfc_sli_hbqbuf_free_all(struct lpfc_hba *phba)
1241 struct lpfc_dmabuf *dmabuf, *next_dmabuf;
1242 struct hbq_dmabuf *hbq_buf;
1243 unsigned long flags;
1247 hbq_count = lpfc_sli_hbq_count();
1248 /* Return all memory used by all HBQs */
1249 spin_lock_irqsave(&phba->hbalock, flags);
1250 for (i = 0; i < hbq_count; ++i) {
1251 list_for_each_entry_safe(dmabuf, next_dmabuf,
1252 &phba->hbqs[i].hbq_buffer_list, list) {
1253 hbq_buf = container_of(dmabuf, struct hbq_dmabuf, dbuf);
1254 list_del(&hbq_buf->dbuf.list);
1255 (phba->hbqs[i].hbq_free_buffer)(phba, hbq_buf);
1257 phba->hbqs[i].buffer_count = 0;
1259 /* Return all HBQ buffer that are in-fly */
1260 list_for_each_entry_safe(dmabuf, next_dmabuf, &phba->rb_pend_list,
1262 hbq_buf = container_of(dmabuf, struct hbq_dmabuf, dbuf);
1263 list_del(&hbq_buf->dbuf.list);
1264 if (hbq_buf->tag == -1) {
1265 (phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer)
1268 hbqno = hbq_buf->tag >> 16;
1269 if (hbqno >= LPFC_MAX_HBQS)
1270 (phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer)
1273 (phba->hbqs[hbqno].hbq_free_buffer)(phba,
1278 /* Mark the HBQs not in use */
1279 phba->hbq_in_use = 0;
1280 spin_unlock_irqrestore(&phba->hbalock, flags);
1284 * lpfc_sli_hbq_to_firmware - Post the hbq buffer to firmware
1285 * @phba: Pointer to HBA context object.
1286 * @hbqno: HBQ number.
1287 * @hbq_buf: Pointer to HBQ buffer.
1289 * This function is called with the hbalock held to post a
1290 * hbq buffer to the firmware. If the function finds an empty
1291 * slot in the HBQ, it will post the buffer. The function will return
1292 * pointer to the hbq entry if it successfully post the buffer
1293 * else it will return NULL.
1296 lpfc_sli_hbq_to_firmware(struct lpfc_hba *phba, uint32_t hbqno,
1297 struct hbq_dmabuf *hbq_buf)
1299 return phba->lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buf);
1303 * lpfc_sli_hbq_to_firmware_s3 - Post the hbq buffer to SLI3 firmware
1304 * @phba: Pointer to HBA context object.
1305 * @hbqno: HBQ number.
1306 * @hbq_buf: Pointer to HBQ buffer.
1308 * This function is called with the hbalock held to post a hbq buffer to the
1309 * firmware. If the function finds an empty slot in the HBQ, it will post the
1310 * buffer and place it on the hbq_buffer_list. The function will return zero if
1311 * it successfully post the buffer else it will return an error.
1314 lpfc_sli_hbq_to_firmware_s3(struct lpfc_hba *phba, uint32_t hbqno,
1315 struct hbq_dmabuf *hbq_buf)
1317 struct lpfc_hbq_entry *hbqe;
1318 dma_addr_t physaddr = hbq_buf->dbuf.phys;
1320 /* Get next HBQ entry slot to use */
1321 hbqe = lpfc_sli_next_hbq_slot(phba, hbqno);
1323 struct hbq_s *hbqp = &phba->hbqs[hbqno];
1325 hbqe->bde.addrHigh = le32_to_cpu(putPaddrHigh(physaddr));
1326 hbqe->bde.addrLow = le32_to_cpu(putPaddrLow(physaddr));
1327 hbqe->bde.tus.f.bdeSize = hbq_buf->size;
1328 hbqe->bde.tus.f.bdeFlags = 0;
1329 hbqe->bde.tus.w = le32_to_cpu(hbqe->bde.tus.w);
1330 hbqe->buffer_tag = le32_to_cpu(hbq_buf->tag);
1332 hbqp->hbqPutIdx = hbqp->next_hbqPutIdx;
1333 writel(hbqp->hbqPutIdx, phba->hbq_put + hbqno);
1335 readl(phba->hbq_put + hbqno);
1336 list_add_tail(&hbq_buf->dbuf.list, &hbqp->hbq_buffer_list);
1343 * lpfc_sli_hbq_to_firmware_s4 - Post the hbq buffer to SLI4 firmware
1344 * @phba: Pointer to HBA context object.
1345 * @hbqno: HBQ number.
1346 * @hbq_buf: Pointer to HBQ buffer.
1348 * This function is called with the hbalock held to post an RQE to the SLI4
1349 * firmware. If able to post the RQE to the RQ it will queue the hbq entry to
1350 * the hbq_buffer_list and return zero, otherwise it will return an error.
1353 lpfc_sli_hbq_to_firmware_s4(struct lpfc_hba *phba, uint32_t hbqno,
1354 struct hbq_dmabuf *hbq_buf)
1357 struct lpfc_rqe hrqe;
1358 struct lpfc_rqe drqe;
1360 hrqe.address_lo = putPaddrLow(hbq_buf->hbuf.phys);
1361 hrqe.address_hi = putPaddrHigh(hbq_buf->hbuf.phys);
1362 drqe.address_lo = putPaddrLow(hbq_buf->dbuf.phys);
1363 drqe.address_hi = putPaddrHigh(hbq_buf->dbuf.phys);
1364 rc = lpfc_sli4_rq_put(phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq,
1369 list_add_tail(&hbq_buf->dbuf.list, &phba->hbqs[hbqno].hbq_buffer_list);
1373 /* HBQ for ELS and CT traffic. */
1374 static struct lpfc_hbq_init lpfc_els_hbq = {
1379 .ring_mask = (1 << LPFC_ELS_RING),
1385 /* HBQ for the extra ring if needed */
1386 static struct lpfc_hbq_init lpfc_extra_hbq = {
1391 .ring_mask = (1 << LPFC_EXTRA_RING),
1398 struct lpfc_hbq_init *lpfc_hbq_defs[] = {
1404 * lpfc_sli_hbqbuf_fill_hbqs - Post more hbq buffers to HBQ
1405 * @phba: Pointer to HBA context object.
1406 * @hbqno: HBQ number.
1407 * @count: Number of HBQ buffers to be posted.
1409 * This function is called with no lock held to post more hbq buffers to the
1410 * given HBQ. The function returns the number of HBQ buffers successfully
1414 lpfc_sli_hbqbuf_fill_hbqs(struct lpfc_hba *phba, uint32_t hbqno, uint32_t count)
1416 uint32_t i, posted = 0;
1417 unsigned long flags;
1418 struct hbq_dmabuf *hbq_buffer;
1419 LIST_HEAD(hbq_buf_list);
1420 if (!phba->hbqs[hbqno].hbq_alloc_buffer)
1423 if ((phba->hbqs[hbqno].buffer_count + count) >
1424 lpfc_hbq_defs[hbqno]->entry_count)
1425 count = lpfc_hbq_defs[hbqno]->entry_count -
1426 phba->hbqs[hbqno].buffer_count;
1429 /* Allocate HBQ entries */
1430 for (i = 0; i < count; i++) {
1431 hbq_buffer = (phba->hbqs[hbqno].hbq_alloc_buffer)(phba);
1434 list_add_tail(&hbq_buffer->dbuf.list, &hbq_buf_list);
1436 /* Check whether HBQ is still in use */
1437 spin_lock_irqsave(&phba->hbalock, flags);
1438 if (!phba->hbq_in_use)
1440 while (!list_empty(&hbq_buf_list)) {
1441 list_remove_head(&hbq_buf_list, hbq_buffer, struct hbq_dmabuf,
1443 hbq_buffer->tag = (phba->hbqs[hbqno].buffer_count |
1445 if (!lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer)) {
1446 phba->hbqs[hbqno].buffer_count++;
1449 (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
1451 spin_unlock_irqrestore(&phba->hbalock, flags);
1454 spin_unlock_irqrestore(&phba->hbalock, flags);
1455 while (!list_empty(&hbq_buf_list)) {
1456 list_remove_head(&hbq_buf_list, hbq_buffer, struct hbq_dmabuf,
1458 (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
1464 * lpfc_sli_hbqbuf_add_hbqs - Post more HBQ buffers to firmware
1465 * @phba: Pointer to HBA context object.
1468 * This function posts more buffers to the HBQ. This function
1469 * is called with no lock held. The function returns the number of HBQ entries
1470 * successfully allocated.
1473 lpfc_sli_hbqbuf_add_hbqs(struct lpfc_hba *phba, uint32_t qno)
1475 return(lpfc_sli_hbqbuf_fill_hbqs(phba, qno,
1476 lpfc_hbq_defs[qno]->add_count));
1480 * lpfc_sli_hbqbuf_init_hbqs - Post initial buffers to the HBQ
1481 * @phba: Pointer to HBA context object.
1482 * @qno: HBQ queue number.
1484 * This function is called from SLI initialization code path with
1485 * no lock held to post initial HBQ buffers to firmware. The
1486 * function returns the number of HBQ entries successfully allocated.
1489 lpfc_sli_hbqbuf_init_hbqs(struct lpfc_hba *phba, uint32_t qno)
1491 return(lpfc_sli_hbqbuf_fill_hbqs(phba, qno,
1492 lpfc_hbq_defs[qno]->init_count));
1496 * lpfc_sli_hbqbuf_get - Remove the first hbq off of an hbq list
1497 * @phba: Pointer to HBA context object.
1498 * @hbqno: HBQ number.
1500 * This function removes the first hbq buffer on an hbq list and returns a
1501 * pointer to that buffer. If it finds no buffers on the list it returns NULL.
1503 static struct hbq_dmabuf *
1504 lpfc_sli_hbqbuf_get(struct list_head *rb_list)
1506 struct lpfc_dmabuf *d_buf;
1508 list_remove_head(rb_list, d_buf, struct lpfc_dmabuf, list);
1511 return container_of(d_buf, struct hbq_dmabuf, dbuf);
1515 * lpfc_sli_hbqbuf_find - Find the hbq buffer associated with a tag
1516 * @phba: Pointer to HBA context object.
1517 * @tag: Tag of the hbq buffer.
1519 * This function is called with hbalock held. This function searches
1520 * for the hbq buffer associated with the given tag in the hbq buffer
1521 * list. If it finds the hbq buffer, it returns the hbq_buffer other wise
1524 static struct hbq_dmabuf *
1525 lpfc_sli_hbqbuf_find(struct lpfc_hba *phba, uint32_t tag)
1527 struct lpfc_dmabuf *d_buf;
1528 struct hbq_dmabuf *hbq_buf;
1532 if (hbqno >= LPFC_MAX_HBQS)
1535 spin_lock_irq(&phba->hbalock);
1536 list_for_each_entry(d_buf, &phba->hbqs[hbqno].hbq_buffer_list, list) {
1537 hbq_buf = container_of(d_buf, struct hbq_dmabuf, dbuf);
1538 if (hbq_buf->tag == tag) {
1539 spin_unlock_irq(&phba->hbalock);
1543 spin_unlock_irq(&phba->hbalock);
1544 lpfc_printf_log(phba, KERN_ERR, LOG_SLI | LOG_VPORT,
1545 "1803 Bad hbq tag. Data: x%x x%x\n",
1546 tag, phba->hbqs[tag >> 16].buffer_count);
1551 * lpfc_sli_free_hbq - Give back the hbq buffer to firmware
1552 * @phba: Pointer to HBA context object.
1553 * @hbq_buffer: Pointer to HBQ buffer.
1555 * This function is called with hbalock. This function gives back
1556 * the hbq buffer to firmware. If the HBQ does not have space to
1557 * post the buffer, it will free the buffer.
1560 lpfc_sli_free_hbq(struct lpfc_hba *phba, struct hbq_dmabuf *hbq_buffer)
1565 hbqno = hbq_buffer->tag >> 16;
1566 if (lpfc_sli_hbq_to_firmware(phba, hbqno, hbq_buffer))
1567 (phba->hbqs[hbqno].hbq_free_buffer)(phba, hbq_buffer);
1572 * lpfc_sli_chk_mbx_command - Check if the mailbox is a legitimate mailbox
1573 * @mbxCommand: mailbox command code.
1575 * This function is called by the mailbox event handler function to verify
1576 * that the completed mailbox command is a legitimate mailbox command. If the
1577 * completed mailbox is not known to the function, it will return MBX_SHUTDOWN
1578 * and the mailbox event handler will take the HBA offline.
1581 lpfc_sli_chk_mbx_command(uint8_t mbxCommand)
1585 switch (mbxCommand) {
1589 case MBX_WRITE_VPARMS:
1590 case MBX_RUN_BIU_DIAG:
1593 case MBX_CONFIG_LINK:
1594 case MBX_CONFIG_RING:
1595 case MBX_RESET_RING:
1596 case MBX_READ_CONFIG:
1597 case MBX_READ_RCONFIG:
1598 case MBX_READ_SPARM:
1599 case MBX_READ_STATUS:
1603 case MBX_READ_LNK_STAT:
1605 case MBX_UNREG_LOGIN:
1608 case MBX_DUMP_MEMORY:
1609 case MBX_DUMP_CONTEXT:
1612 case MBX_UPDATE_CFG:
1614 case MBX_DEL_LD_ENTRY:
1615 case MBX_RUN_PROGRAM:
1617 case MBX_SET_VARIABLE:
1618 case MBX_UNREG_D_ID:
1619 case MBX_KILL_BOARD:
1620 case MBX_CONFIG_FARP:
1623 case MBX_RUN_BIU_DIAG64:
1624 case MBX_CONFIG_PORT:
1625 case MBX_READ_SPARM64:
1626 case MBX_READ_RPI64:
1627 case MBX_REG_LOGIN64:
1631 case MBX_LOAD_EXP_ROM:
1632 case MBX_ASYNCEVT_ENABLE:
1636 case MBX_PORT_CAPABILITIES:
1637 case MBX_PORT_IOV_CONTROL:
1638 case MBX_SLI4_CONFIG:
1639 case MBX_SLI4_REQ_FTRS:
1641 case MBX_UNREG_FCFI:
1646 case MBX_RESUME_RPI:
1657 * lpfc_sli_wake_mbox_wait - lpfc_sli_issue_mbox_wait mbox completion handler
1658 * @phba: Pointer to HBA context object.
1659 * @pmboxq: Pointer to mailbox command.
1661 * This is completion handler function for mailbox commands issued from
1662 * lpfc_sli_issue_mbox_wait function. This function is called by the
1663 * mailbox event handler function with no lock held. This function
1664 * will wake up thread waiting on the wait queue pointed by context1
1668 lpfc_sli_wake_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
1670 wait_queue_head_t *pdone_q;
1671 unsigned long drvr_flag;
1674 * If pdone_q is empty, the driver thread gave up waiting and
1675 * continued running.
1677 pmboxq->mbox_flag |= LPFC_MBX_WAKE;
1678 spin_lock_irqsave(&phba->hbalock, drvr_flag);
1679 pdone_q = (wait_queue_head_t *) pmboxq->context1;
1681 wake_up_interruptible(pdone_q);
1682 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
1688 * lpfc_sli_def_mbox_cmpl - Default mailbox completion handler
1689 * @phba: Pointer to HBA context object.
1690 * @pmb: Pointer to mailbox object.
1692 * This function is the default mailbox completion handler. It
1693 * frees the memory resources associated with the completed mailbox
1694 * command. If the completed command is a REG_LOGIN mailbox command,
1695 * this function will issue a UREG_LOGIN to re-claim the RPI.
1698 lpfc_sli_def_mbox_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmb)
1700 struct lpfc_dmabuf *mp;
1704 mp = (struct lpfc_dmabuf *) (pmb->context1);
1707 lpfc_mbuf_free(phba, mp->virt, mp->phys);
1711 if ((pmb->u.mb.mbxCommand == MBX_UNREG_LOGIN) &&
1712 (phba->sli_rev == LPFC_SLI_REV4))
1713 lpfc_sli4_free_rpi(phba, pmb->u.mb.un.varUnregLogin.rpi);
1716 * If a REG_LOGIN succeeded after node is destroyed or node
1717 * is in re-discovery driver need to cleanup the RPI.
1719 if (!(phba->pport->load_flag & FC_UNLOADING) &&
1720 pmb->u.mb.mbxCommand == MBX_REG_LOGIN64 &&
1721 !pmb->u.mb.mbxStatus) {
1722 rpi = pmb->u.mb.un.varWords[0];
1723 vpi = pmb->u.mb.un.varRegLogin.vpi - phba->vpi_base;
1724 lpfc_unreg_login(phba, vpi, rpi, pmb);
1725 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
1726 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
1727 if (rc != MBX_NOT_FINISHED)
1731 if (bf_get(lpfc_mqe_command, &pmb->u.mqe) == MBX_SLI4_CONFIG)
1732 lpfc_sli4_mbox_cmd_free(phba, pmb);
1734 mempool_free(pmb, phba->mbox_mem_pool);
1738 * lpfc_sli_handle_mb_event - Handle mailbox completions from firmware
1739 * @phba: Pointer to HBA context object.
1741 * This function is called with no lock held. This function processes all
1742 * the completed mailbox commands and gives it to upper layers. The interrupt
1743 * service routine processes mailbox completion interrupt and adds completed
1744 * mailbox commands to the mboxq_cmpl queue and signals the worker thread.
1745 * Worker thread call lpfc_sli_handle_mb_event, which will return the
1746 * completed mailbox commands in mboxq_cmpl queue to the upper layers. This
1747 * function returns the mailbox commands to the upper layer by calling the
1748 * completion handler function of each mailbox.
1751 lpfc_sli_handle_mb_event(struct lpfc_hba *phba)
1758 phba->sli.slistat.mbox_event++;
1760 /* Get all completed mailboxe buffers into the cmplq */
1761 spin_lock_irq(&phba->hbalock);
1762 list_splice_init(&phba->sli.mboxq_cmpl, &cmplq);
1763 spin_unlock_irq(&phba->hbalock);
1765 /* Get a Mailbox buffer to setup mailbox commands for callback */
1767 list_remove_head(&cmplq, pmb, LPFC_MBOXQ_t, list);
1773 if (pmbox->mbxCommand != MBX_HEARTBEAT) {
1775 lpfc_debugfs_disc_trc(pmb->vport,
1776 LPFC_DISC_TRC_MBOX_VPORT,
1777 "MBOX cmpl vport: cmd:x%x mb:x%x x%x",
1778 (uint32_t)pmbox->mbxCommand,
1779 pmbox->un.varWords[0],
1780 pmbox->un.varWords[1]);
1783 lpfc_debugfs_disc_trc(phba->pport,
1785 "MBOX cmpl: cmd:x%x mb:x%x x%x",
1786 (uint32_t)pmbox->mbxCommand,
1787 pmbox->un.varWords[0],
1788 pmbox->un.varWords[1]);
1793 * It is a fatal error if unknown mbox command completion.
1795 if (lpfc_sli_chk_mbx_command(pmbox->mbxCommand) ==
1797 /* Unknow mailbox command compl */
1798 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
1799 "(%d):0323 Unknown Mailbox command "
1801 pmb->vport ? pmb->vport->vpi : 0,
1803 lpfc_sli4_mbox_opcode_get(phba, pmb));
1804 phba->link_state = LPFC_HBA_ERROR;
1805 phba->work_hs = HS_FFER3;
1806 lpfc_handle_eratt(phba);
1810 if (pmbox->mbxStatus) {
1811 phba->sli.slistat.mbox_stat_err++;
1812 if (pmbox->mbxStatus == MBXERR_NO_RESOURCES) {
1813 /* Mbox cmd cmpl error - RETRYing */
1814 lpfc_printf_log(phba, KERN_INFO,
1816 "(%d):0305 Mbox cmd cmpl "
1817 "error - RETRYing Data: x%x "
1818 "(x%x) x%x x%x x%x\n",
1819 pmb->vport ? pmb->vport->vpi :0,
1821 lpfc_sli4_mbox_opcode_get(phba,
1824 pmbox->un.varWords[0],
1825 pmb->vport->port_state);
1826 pmbox->mbxStatus = 0;
1827 pmbox->mbxOwner = OWN_HOST;
1828 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
1829 if (rc != MBX_NOT_FINISHED)
1834 /* Mailbox cmd <cmd> Cmpl <cmpl> */
1835 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
1836 "(%d):0307 Mailbox cmd x%x (x%x) Cmpl x%p "
1837 "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x\n",
1838 pmb->vport ? pmb->vport->vpi : 0,
1840 lpfc_sli4_mbox_opcode_get(phba, pmb),
1842 *((uint32_t *) pmbox),
1843 pmbox->un.varWords[0],
1844 pmbox->un.varWords[1],
1845 pmbox->un.varWords[2],
1846 pmbox->un.varWords[3],
1847 pmbox->un.varWords[4],
1848 pmbox->un.varWords[5],
1849 pmbox->un.varWords[6],
1850 pmbox->un.varWords[7]);
1853 pmb->mbox_cmpl(phba,pmb);
1859 * lpfc_sli_get_buff - Get the buffer associated with the buffer tag
1860 * @phba: Pointer to HBA context object.
1861 * @pring: Pointer to driver SLI ring object.
1864 * This function is called with no lock held. When QUE_BUFTAG_BIT bit
1865 * is set in the tag the buffer is posted for a particular exchange,
1866 * the function will return the buffer without replacing the buffer.
1867 * If the buffer is for unsolicited ELS or CT traffic, this function
1868 * returns the buffer and also posts another buffer to the firmware.
1870 static struct lpfc_dmabuf *
1871 lpfc_sli_get_buff(struct lpfc_hba *phba,
1872 struct lpfc_sli_ring *pring,
1875 struct hbq_dmabuf *hbq_entry;
1877 if (tag & QUE_BUFTAG_BIT)
1878 return lpfc_sli_ring_taggedbuf_get(phba, pring, tag);
1879 hbq_entry = lpfc_sli_hbqbuf_find(phba, tag);
1882 return &hbq_entry->dbuf;
1886 * lpfc_complete_unsol_iocb - Complete an unsolicited sequence
1887 * @phba: Pointer to HBA context object.
1888 * @pring: Pointer to driver SLI ring object.
1889 * @saveq: Pointer to the iocbq struct representing the sequence starting frame.
1890 * @fch_r_ctl: the r_ctl for the first frame of the sequence.
1891 * @fch_type: the type for the first frame of the sequence.
1893 * This function is called with no lock held. This function uses the r_ctl and
1894 * type of the received sequence to find the correct callback function to call
1895 * to process the sequence.
1898 lpfc_complete_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
1899 struct lpfc_iocbq *saveq, uint32_t fch_r_ctl,
1904 /* unSolicited Responses */
1905 if (pring->prt[0].profile) {
1906 if (pring->prt[0].lpfc_sli_rcv_unsol_event)
1907 (pring->prt[0].lpfc_sli_rcv_unsol_event) (phba, pring,
1911 /* We must search, based on rctl / type
1912 for the right routine */
1913 for (i = 0; i < pring->num_mask; i++) {
1914 if ((pring->prt[i].rctl == fch_r_ctl) &&
1915 (pring->prt[i].type == fch_type)) {
1916 if (pring->prt[i].lpfc_sli_rcv_unsol_event)
1917 (pring->prt[i].lpfc_sli_rcv_unsol_event)
1918 (phba, pring, saveq);
1926 * lpfc_sli_process_unsol_iocb - Unsolicited iocb handler
1927 * @phba: Pointer to HBA context object.
1928 * @pring: Pointer to driver SLI ring object.
1929 * @saveq: Pointer to the unsolicited iocb.
1931 * This function is called with no lock held by the ring event handler
1932 * when there is an unsolicited iocb posted to the response ring by the
1933 * firmware. This function gets the buffer associated with the iocbs
1934 * and calls the event handler for the ring. This function handles both
1935 * qring buffers and hbq buffers.
1936 * When the function returns 1 the caller can free the iocb object otherwise
1937 * upper layer functions will free the iocb objects.
1940 lpfc_sli_process_unsol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
1941 struct lpfc_iocbq *saveq)
1945 uint32_t Rctl, Type;
1947 struct lpfc_iocbq *iocbq;
1948 struct lpfc_dmabuf *dmzbuf;
1951 irsp = &(saveq->iocb);
1953 if (irsp->ulpCommand == CMD_ASYNC_STATUS) {
1954 if (pring->lpfc_sli_rcv_async_status)
1955 pring->lpfc_sli_rcv_async_status(phba, pring, saveq);
1957 lpfc_printf_log(phba,
1960 "0316 Ring %d handler: unexpected "
1961 "ASYNC_STATUS iocb received evt_code "
1964 irsp->un.asyncstat.evt_code);
1968 if ((irsp->ulpCommand == CMD_IOCB_RET_XRI64_CX) &&
1969 (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)) {
1970 if (irsp->ulpBdeCount > 0) {
1971 dmzbuf = lpfc_sli_get_buff(phba, pring,
1972 irsp->un.ulpWord[3]);
1973 lpfc_in_buf_free(phba, dmzbuf);
1976 if (irsp->ulpBdeCount > 1) {
1977 dmzbuf = lpfc_sli_get_buff(phba, pring,
1978 irsp->unsli3.sli3Words[3]);
1979 lpfc_in_buf_free(phba, dmzbuf);
1982 if (irsp->ulpBdeCount > 2) {
1983 dmzbuf = lpfc_sli_get_buff(phba, pring,
1984 irsp->unsli3.sli3Words[7]);
1985 lpfc_in_buf_free(phba, dmzbuf);
1991 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
1992 if (irsp->ulpBdeCount != 0) {
1993 saveq->context2 = lpfc_sli_get_buff(phba, pring,
1994 irsp->un.ulpWord[3]);
1995 if (!saveq->context2)
1996 lpfc_printf_log(phba,
1999 "0341 Ring %d Cannot find buffer for "
2000 "an unsolicited iocb. tag 0x%x\n",
2002 irsp->un.ulpWord[3]);
2004 if (irsp->ulpBdeCount == 2) {
2005 saveq->context3 = lpfc_sli_get_buff(phba, pring,
2006 irsp->unsli3.sli3Words[7]);
2007 if (!saveq->context3)
2008 lpfc_printf_log(phba,
2011 "0342 Ring %d Cannot find buffer for an"
2012 " unsolicited iocb. tag 0x%x\n",
2014 irsp->unsli3.sli3Words[7]);
2016 list_for_each_entry(iocbq, &saveq->list, list) {
2017 irsp = &(iocbq->iocb);
2018 if (irsp->ulpBdeCount != 0) {
2019 iocbq->context2 = lpfc_sli_get_buff(phba, pring,
2020 irsp->un.ulpWord[3]);
2021 if (!iocbq->context2)
2022 lpfc_printf_log(phba,
2025 "0343 Ring %d Cannot find "
2026 "buffer for an unsolicited iocb"
2027 ". tag 0x%x\n", pring->ringno,
2028 irsp->un.ulpWord[3]);
2030 if (irsp->ulpBdeCount == 2) {
2031 iocbq->context3 = lpfc_sli_get_buff(phba, pring,
2032 irsp->unsli3.sli3Words[7]);
2033 if (!iocbq->context3)
2034 lpfc_printf_log(phba,
2037 "0344 Ring %d Cannot find "
2038 "buffer for an unsolicited "
2041 irsp->unsli3.sli3Words[7]);
2045 if (irsp->ulpBdeCount != 0 &&
2046 (irsp->ulpCommand == CMD_IOCB_RCV_CONT64_CX ||
2047 irsp->ulpStatus == IOSTAT_INTERMED_RSP)) {
2050 /* search continue save q for same XRI */
2051 list_for_each_entry(iocbq, &pring->iocb_continue_saveq, clist) {
2052 if (iocbq->iocb.ulpContext == saveq->iocb.ulpContext) {
2053 list_add_tail(&saveq->list, &iocbq->list);
2059 list_add_tail(&saveq->clist,
2060 &pring->iocb_continue_saveq);
2061 if (saveq->iocb.ulpStatus != IOSTAT_INTERMED_RSP) {
2062 list_del_init(&iocbq->clist);
2064 irsp = &(saveq->iocb);
2068 if ((irsp->ulpCommand == CMD_RCV_ELS_REQ64_CX) ||
2069 (irsp->ulpCommand == CMD_RCV_ELS_REQ_CX) ||
2070 (irsp->ulpCommand == CMD_IOCB_RCV_ELS64_CX)) {
2074 w5p = (WORD5 *)&(saveq->iocb.un.ulpWord[5]);
2075 Rctl = w5p->hcsw.Rctl;
2076 Type = w5p->hcsw.Type;
2078 /* Firmware Workaround */
2079 if ((Rctl == 0) && (pring->ringno == LPFC_ELS_RING) &&
2080 (irsp->ulpCommand == CMD_RCV_SEQUENCE64_CX ||
2081 irsp->ulpCommand == CMD_IOCB_RCV_SEQ64_CX)) {
2084 w5p->hcsw.Rctl = Rctl;
2085 w5p->hcsw.Type = Type;
2089 if (!lpfc_complete_unsol_iocb(phba, pring, saveq, Rctl, Type))
2090 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
2091 "0313 Ring %d handler: unexpected Rctl x%x "
2092 "Type x%x received\n",
2093 pring->ringno, Rctl, Type);
2099 * lpfc_sli_iocbq_lookup - Find command iocb for the given response iocb
2100 * @phba: Pointer to HBA context object.
2101 * @pring: Pointer to driver SLI ring object.
2102 * @prspiocb: Pointer to response iocb object.
2104 * This function looks up the iocb_lookup table to get the command iocb
2105 * corresponding to the given response iocb using the iotag of the
2106 * response iocb. This function is called with the hbalock held.
2107 * This function returns the command iocb object if it finds the command
2108 * iocb else returns NULL.
2110 static struct lpfc_iocbq *
2111 lpfc_sli_iocbq_lookup(struct lpfc_hba *phba,
2112 struct lpfc_sli_ring *pring,
2113 struct lpfc_iocbq *prspiocb)
2115 struct lpfc_iocbq *cmd_iocb = NULL;
2118 iotag = prspiocb->iocb.ulpIoTag;
2120 if (iotag != 0 && iotag <= phba->sli.last_iotag) {
2121 cmd_iocb = phba->sli.iocbq_lookup[iotag];
2122 list_del_init(&cmd_iocb->list);
2123 pring->txcmplq_cnt--;
2127 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2128 "0317 iotag x%x is out off "
2129 "range: max iotag x%x wd0 x%x\n",
2130 iotag, phba->sli.last_iotag,
2131 *(((uint32_t *) &prspiocb->iocb) + 7));
2136 * lpfc_sli_iocbq_lookup_by_tag - Find command iocb for the iotag
2137 * @phba: Pointer to HBA context object.
2138 * @pring: Pointer to driver SLI ring object.
2141 * This function looks up the iocb_lookup table to get the command iocb
2142 * corresponding to the given iotag. This function is called with the
2144 * This function returns the command iocb object if it finds the command
2145 * iocb else returns NULL.
2147 static struct lpfc_iocbq *
2148 lpfc_sli_iocbq_lookup_by_tag(struct lpfc_hba *phba,
2149 struct lpfc_sli_ring *pring, uint16_t iotag)
2151 struct lpfc_iocbq *cmd_iocb;
2153 if (iotag != 0 && iotag <= phba->sli.last_iotag) {
2154 cmd_iocb = phba->sli.iocbq_lookup[iotag];
2155 list_del_init(&cmd_iocb->list);
2156 pring->txcmplq_cnt--;
2160 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2161 "0372 iotag x%x is out off range: max iotag (x%x)\n",
2162 iotag, phba->sli.last_iotag);
2167 * lpfc_sli_process_sol_iocb - process solicited iocb completion
2168 * @phba: Pointer to HBA context object.
2169 * @pring: Pointer to driver SLI ring object.
2170 * @saveq: Pointer to the response iocb to be processed.
2172 * This function is called by the ring event handler for non-fcp
2173 * rings when there is a new response iocb in the response ring.
2174 * The caller is not required to hold any locks. This function
2175 * gets the command iocb associated with the response iocb and
2176 * calls the completion handler for the command iocb. If there
2177 * is no completion handler, the function will free the resources
2178 * associated with command iocb. If the response iocb is for
2179 * an already aborted command iocb, the status of the completion
2180 * is changed to IOSTAT_LOCAL_REJECT/IOERR_SLI_ABORTED.
2181 * This function always returns 1.
2184 lpfc_sli_process_sol_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2185 struct lpfc_iocbq *saveq)
2187 struct lpfc_iocbq *cmdiocbp;
2189 unsigned long iflag;
2191 /* Based on the iotag field, get the cmd IOCB from the txcmplq */
2192 spin_lock_irqsave(&phba->hbalock, iflag);
2193 cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring, saveq);
2194 spin_unlock_irqrestore(&phba->hbalock, iflag);
2197 if (cmdiocbp->iocb_cmpl) {
2199 * If an ELS command failed send an event to mgmt
2202 if (saveq->iocb.ulpStatus &&
2203 (pring->ringno == LPFC_ELS_RING) &&
2204 (cmdiocbp->iocb.ulpCommand ==
2205 CMD_ELS_REQUEST64_CR))
2206 lpfc_send_els_failure_event(phba,
2210 * Post all ELS completions to the worker thread.
2211 * All other are passed to the completion callback.
2213 if (pring->ringno == LPFC_ELS_RING) {
2214 if (cmdiocbp->iocb_flag & LPFC_DRIVER_ABORTED) {
2215 cmdiocbp->iocb_flag &=
2216 ~LPFC_DRIVER_ABORTED;
2217 saveq->iocb.ulpStatus =
2218 IOSTAT_LOCAL_REJECT;
2219 saveq->iocb.un.ulpWord[4] =
2222 /* Firmware could still be in progress
2223 * of DMAing payload, so don't free data
2224 * buffer till after a hbeat.
2226 saveq->iocb_flag |= LPFC_DELAY_MEM_FREE;
2229 (cmdiocbp->iocb_cmpl) (phba, cmdiocbp, saveq);
2231 lpfc_sli_release_iocbq(phba, cmdiocbp);
2234 * Unknown initiating command based on the response iotag.
2235 * This could be the case on the ELS ring because of
2238 if (pring->ringno != LPFC_ELS_RING) {
2240 * Ring <ringno> handler: unexpected completion IoTag
2243 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
2244 "0322 Ring %d handler: "
2245 "unexpected completion IoTag x%x "
2246 "Data: x%x x%x x%x x%x\n",
2248 saveq->iocb.ulpIoTag,
2249 saveq->iocb.ulpStatus,
2250 saveq->iocb.un.ulpWord[4],
2251 saveq->iocb.ulpCommand,
2252 saveq->iocb.ulpContext);
2260 * lpfc_sli_rsp_pointers_error - Response ring pointer error handler
2261 * @phba: Pointer to HBA context object.
2262 * @pring: Pointer to driver SLI ring object.
2264 * This function is called from the iocb ring event handlers when
2265 * put pointer is ahead of the get pointer for a ring. This function signal
2266 * an error attention condition to the worker thread and the worker
2267 * thread will transition the HBA to offline state.
2270 lpfc_sli_rsp_pointers_error(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
2272 struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno];
2274 * Ring <ringno> handler: portRspPut <portRspPut> is bigger than
2275 * rsp ring <portRspMax>
2277 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2278 "0312 Ring %d handler: portRspPut %d "
2279 "is bigger than rsp ring %d\n",
2280 pring->ringno, le32_to_cpu(pgp->rspPutInx),
2283 phba->link_state = LPFC_HBA_ERROR;
2286 * All error attention handlers are posted to
2289 phba->work_ha |= HA_ERATT;
2290 phba->work_hs = HS_FFER3;
2292 lpfc_worker_wake_up(phba);
2298 * lpfc_poll_eratt - Error attention polling timer timeout handler
2299 * @ptr: Pointer to address of HBA context object.
2301 * This function is invoked by the Error Attention polling timer when the
2302 * timer times out. It will check the SLI Error Attention register for
2303 * possible attention events. If so, it will post an Error Attention event
2304 * and wake up worker thread to process it. Otherwise, it will set up the
2305 * Error Attention polling timer for the next poll.
2307 void lpfc_poll_eratt(unsigned long ptr)
2309 struct lpfc_hba *phba;
2312 phba = (struct lpfc_hba *)ptr;
2314 /* Check chip HA register for error event */
2315 eratt = lpfc_sli_check_eratt(phba);
2318 /* Tell the worker thread there is work to do */
2319 lpfc_worker_wake_up(phba);
2321 /* Restart the timer for next eratt poll */
2322 mod_timer(&phba->eratt_poll, jiffies +
2323 HZ * LPFC_ERATT_POLL_INTERVAL);
2328 * lpfc_sli_poll_fcp_ring - Handle FCP ring completion in polling mode
2329 * @phba: Pointer to HBA context object.
2331 * This function is called from lpfc_queuecommand, lpfc_poll_timeout,
2332 * lpfc_abort_handler and lpfc_slave_configure when FCP_RING_POLLING
2335 * The caller does not hold any lock.
2336 * The function processes each response iocb in the response ring until it
2337 * finds an iocb with LE bit set and chains all the iocbs upto the iocb with
2338 * LE bit set. The function will call the completion handler of the command iocb
2339 * if the response iocb indicates a completion for a command iocb or it is
2340 * an abort completion.
2342 void lpfc_sli_poll_fcp_ring(struct lpfc_hba *phba)
2344 struct lpfc_sli *psli = &phba->sli;
2345 struct lpfc_sli_ring *pring = &psli->ring[LPFC_FCP_RING];
2346 IOCB_t *irsp = NULL;
2347 IOCB_t *entry = NULL;
2348 struct lpfc_iocbq *cmdiocbq = NULL;
2349 struct lpfc_iocbq rspiocbq;
2350 struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno];
2352 uint32_t portRspPut, portRspMax;
2354 uint32_t rsp_cmpl = 0;
2356 unsigned long iflags;
2358 pring->stats.iocb_event++;
2361 * The next available response entry should never exceed the maximum
2362 * entries. If it does, treat it as an adapter hardware error.
2364 portRspMax = pring->numRiocb;
2365 portRspPut = le32_to_cpu(pgp->rspPutInx);
2366 if (unlikely(portRspPut >= portRspMax)) {
2367 lpfc_sli_rsp_pointers_error(phba, pring);
2372 while (pring->rspidx != portRspPut) {
2373 entry = lpfc_resp_iocb(phba, pring);
2374 if (++pring->rspidx >= portRspMax)
2377 lpfc_sli_pcimem_bcopy((uint32_t *) entry,
2378 (uint32_t *) &rspiocbq.iocb,
2379 phba->iocb_rsp_size);
2380 irsp = &rspiocbq.iocb;
2381 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
2382 pring->stats.iocb_rsp++;
2385 if (unlikely(irsp->ulpStatus)) {
2386 /* Rsp ring <ringno> error: IOCB */
2387 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
2388 "0326 Rsp Ring %d error: IOCB Data: "
2389 "x%x x%x x%x x%x x%x x%x x%x x%x\n",
2391 irsp->un.ulpWord[0],
2392 irsp->un.ulpWord[1],
2393 irsp->un.ulpWord[2],
2394 irsp->un.ulpWord[3],
2395 irsp->un.ulpWord[4],
2396 irsp->un.ulpWord[5],
2397 *(uint32_t *)&irsp->un1,
2398 *((uint32_t *)&irsp->un1 + 1));
2402 case LPFC_ABORT_IOCB:
2405 * Idle exchange closed via ABTS from port. No iocb
2406 * resources need to be recovered.
2408 if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
2409 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
2410 "0314 IOCB cmd 0x%x "
2411 "processed. Skipping "
2417 spin_lock_irqsave(&phba->hbalock, iflags);
2418 cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
2420 spin_unlock_irqrestore(&phba->hbalock, iflags);
2421 if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
2422 (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
2427 if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
2428 char adaptermsg[LPFC_MAX_ADPTMSG];
2429 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
2430 memcpy(&adaptermsg[0], (uint8_t *) irsp,
2432 dev_warn(&((phba->pcidev)->dev),
2434 phba->brd_no, adaptermsg);
2436 /* Unknown IOCB command */
2437 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2438 "0321 Unknown IOCB command "
2439 "Data: x%x, x%x x%x x%x x%x\n",
2440 type, irsp->ulpCommand,
2449 * The response IOCB has been processed. Update the ring
2450 * pointer in SLIM. If the port response put pointer has not
2451 * been updated, sync the pgp->rspPutInx and fetch the new port
2452 * response put pointer.
2454 writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx);
2456 if (pring->rspidx == portRspPut)
2457 portRspPut = le32_to_cpu(pgp->rspPutInx);
2460 ha_copy = readl(phba->HAregaddr);
2461 ha_copy >>= (LPFC_FCP_RING * 4);
2463 if ((rsp_cmpl > 0) && (ha_copy & HA_R0RE_REQ)) {
2464 spin_lock_irqsave(&phba->hbalock, iflags);
2465 pring->stats.iocb_rsp_full++;
2466 status = ((CA_R0ATT | CA_R0RE_RSP) << (LPFC_FCP_RING * 4));
2467 writel(status, phba->CAregaddr);
2468 readl(phba->CAregaddr);
2469 spin_unlock_irqrestore(&phba->hbalock, iflags);
2471 if ((ha_copy & HA_R0CE_RSP) &&
2472 (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
2473 spin_lock_irqsave(&phba->hbalock, iflags);
2474 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
2475 pring->stats.iocb_cmd_empty++;
2477 /* Force update of the local copy of cmdGetInx */
2478 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
2479 lpfc_sli_resume_iocb(phba, pring);
2481 if ((pring->lpfc_sli_cmd_available))
2482 (pring->lpfc_sli_cmd_available) (phba, pring);
2484 spin_unlock_irqrestore(&phba->hbalock, iflags);
2491 * lpfc_sli_handle_fast_ring_event - Handle ring events on FCP ring
2492 * @phba: Pointer to HBA context object.
2493 * @pring: Pointer to driver SLI ring object.
2494 * @mask: Host attention register mask for this ring.
2496 * This function is called from the interrupt context when there is a ring
2497 * event for the fcp ring. The caller does not hold any lock.
2498 * The function processes each response iocb in the response ring until it
2499 * finds an iocb with LE bit set and chains all the iocbs upto the iocb with
2500 * LE bit set. The function will call the completion handler of the command iocb
2501 * if the response iocb indicates a completion for a command iocb or it is
2502 * an abort completion. The function will call lpfc_sli_process_unsol_iocb
2503 * function if this is an unsolicited iocb.
2504 * This routine presumes LPFC_FCP_RING handling and doesn't bother
2505 * to check it explicitly. This function always returns 1.
2508 lpfc_sli_handle_fast_ring_event(struct lpfc_hba *phba,
2509 struct lpfc_sli_ring *pring, uint32_t mask)
2511 struct lpfc_pgp *pgp = &phba->port_gp[pring->ringno];
2512 IOCB_t *irsp = NULL;
2513 IOCB_t *entry = NULL;
2514 struct lpfc_iocbq *cmdiocbq = NULL;
2515 struct lpfc_iocbq rspiocbq;
2517 uint32_t portRspPut, portRspMax;
2519 lpfc_iocb_type type;
2520 unsigned long iflag;
2521 uint32_t rsp_cmpl = 0;
2523 spin_lock_irqsave(&phba->hbalock, iflag);
2524 pring->stats.iocb_event++;
2527 * The next available response entry should never exceed the maximum
2528 * entries. If it does, treat it as an adapter hardware error.
2530 portRspMax = pring->numRiocb;
2531 portRspPut = le32_to_cpu(pgp->rspPutInx);
2532 if (unlikely(portRspPut >= portRspMax)) {
2533 lpfc_sli_rsp_pointers_error(phba, pring);
2534 spin_unlock_irqrestore(&phba->hbalock, iflag);
2539 while (pring->rspidx != portRspPut) {
2541 * Fetch an entry off the ring and copy it into a local data
2542 * structure. The copy involves a byte-swap since the
2543 * network byte order and pci byte orders are different.
2545 entry = lpfc_resp_iocb(phba, pring);
2546 phba->last_completion_time = jiffies;
2548 if (++pring->rspidx >= portRspMax)
2551 lpfc_sli_pcimem_bcopy((uint32_t *) entry,
2552 (uint32_t *) &rspiocbq.iocb,
2553 phba->iocb_rsp_size);
2554 INIT_LIST_HEAD(&(rspiocbq.list));
2555 irsp = &rspiocbq.iocb;
2557 type = lpfc_sli_iocb_cmd_type(irsp->ulpCommand & CMD_IOCB_MASK);
2558 pring->stats.iocb_rsp++;
2561 if (unlikely(irsp->ulpStatus)) {
2563 * If resource errors reported from HBA, reduce
2564 * queuedepths of the SCSI device.
2566 if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
2567 (irsp->un.ulpWord[4] == IOERR_NO_RESOURCES)) {
2568 spin_unlock_irqrestore(&phba->hbalock, iflag);
2569 phba->lpfc_rampdown_queue_depth(phba);
2570 spin_lock_irqsave(&phba->hbalock, iflag);
2573 /* Rsp ring <ringno> error: IOCB */
2574 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
2575 "0336 Rsp Ring %d error: IOCB Data: "
2576 "x%x x%x x%x x%x x%x x%x x%x x%x\n",
2578 irsp->un.ulpWord[0],
2579 irsp->un.ulpWord[1],
2580 irsp->un.ulpWord[2],
2581 irsp->un.ulpWord[3],
2582 irsp->un.ulpWord[4],
2583 irsp->un.ulpWord[5],
2584 *(uint32_t *)&irsp->un1,
2585 *((uint32_t *)&irsp->un1 + 1));
2589 case LPFC_ABORT_IOCB:
2592 * Idle exchange closed via ABTS from port. No iocb
2593 * resources need to be recovered.
2595 if (unlikely(irsp->ulpCommand == CMD_XRI_ABORTED_CX)) {
2596 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
2597 "0333 IOCB cmd 0x%x"
2598 " processed. Skipping"
2604 cmdiocbq = lpfc_sli_iocbq_lookup(phba, pring,
2606 if ((cmdiocbq) && (cmdiocbq->iocb_cmpl)) {
2607 if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
2608 (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
2611 spin_unlock_irqrestore(&phba->hbalock,
2613 (cmdiocbq->iocb_cmpl)(phba, cmdiocbq,
2615 spin_lock_irqsave(&phba->hbalock,
2620 case LPFC_UNSOL_IOCB:
2621 spin_unlock_irqrestore(&phba->hbalock, iflag);
2622 lpfc_sli_process_unsol_iocb(phba, pring, &rspiocbq);
2623 spin_lock_irqsave(&phba->hbalock, iflag);
2626 if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
2627 char adaptermsg[LPFC_MAX_ADPTMSG];
2628 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
2629 memcpy(&adaptermsg[0], (uint8_t *) irsp,
2631 dev_warn(&((phba->pcidev)->dev),
2633 phba->brd_no, adaptermsg);
2635 /* Unknown IOCB command */
2636 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2637 "0334 Unknown IOCB command "
2638 "Data: x%x, x%x x%x x%x x%x\n",
2639 type, irsp->ulpCommand,
2648 * The response IOCB has been processed. Update the ring
2649 * pointer in SLIM. If the port response put pointer has not
2650 * been updated, sync the pgp->rspPutInx and fetch the new port
2651 * response put pointer.
2653 writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx);
2655 if (pring->rspidx == portRspPut)
2656 portRspPut = le32_to_cpu(pgp->rspPutInx);
2659 if ((rsp_cmpl > 0) && (mask & HA_R0RE_REQ)) {
2660 pring->stats.iocb_rsp_full++;
2661 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
2662 writel(status, phba->CAregaddr);
2663 readl(phba->CAregaddr);
2665 if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
2666 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
2667 pring->stats.iocb_cmd_empty++;
2669 /* Force update of the local copy of cmdGetInx */
2670 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
2671 lpfc_sli_resume_iocb(phba, pring);
2673 if ((pring->lpfc_sli_cmd_available))
2674 (pring->lpfc_sli_cmd_available) (phba, pring);
2678 spin_unlock_irqrestore(&phba->hbalock, iflag);
2683 * lpfc_sli_sp_handle_rspiocb - Handle slow-path response iocb
2684 * @phba: Pointer to HBA context object.
2685 * @pring: Pointer to driver SLI ring object.
2686 * @rspiocbp: Pointer to driver response IOCB object.
2688 * This function is called from the worker thread when there is a slow-path
2689 * response IOCB to process. This function chains all the response iocbs until
2690 * seeing the iocb with the LE bit set. The function will call
2691 * lpfc_sli_process_sol_iocb function if the response iocb indicates a
2692 * completion of a command iocb. The function will call the
2693 * lpfc_sli_process_unsol_iocb function if this is an unsolicited iocb.
2694 * The function frees the resources or calls the completion handler if this
2695 * iocb is an abort completion. The function returns NULL when the response
2696 * iocb has the LE bit set and all the chained iocbs are processed, otherwise
2697 * this function shall chain the iocb on to the iocb_continueq and return the
2698 * response iocb passed in.
2700 static struct lpfc_iocbq *
2701 lpfc_sli_sp_handle_rspiocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
2702 struct lpfc_iocbq *rspiocbp)
2704 struct lpfc_iocbq *saveq;
2705 struct lpfc_iocbq *cmdiocbp;
2706 struct lpfc_iocbq *next_iocb;
2707 IOCB_t *irsp = NULL;
2708 uint32_t free_saveq;
2709 uint8_t iocb_cmd_type;
2710 lpfc_iocb_type type;
2711 unsigned long iflag;
2714 spin_lock_irqsave(&phba->hbalock, iflag);
2715 /* First add the response iocb to the countinueq list */
2716 list_add_tail(&rspiocbp->list, &(pring->iocb_continueq));
2717 pring->iocb_continueq_cnt++;
2719 /* Now, determine whetehr the list is completed for processing */
2720 irsp = &rspiocbp->iocb;
2723 * By default, the driver expects to free all resources
2724 * associated with this iocb completion.
2727 saveq = list_get_first(&pring->iocb_continueq,
2728 struct lpfc_iocbq, list);
2729 irsp = &(saveq->iocb);
2730 list_del_init(&pring->iocb_continueq);
2731 pring->iocb_continueq_cnt = 0;
2733 pring->stats.iocb_rsp++;
2736 * If resource errors reported from HBA, reduce
2737 * queuedepths of the SCSI device.
2739 if ((irsp->ulpStatus == IOSTAT_LOCAL_REJECT) &&
2740 (irsp->un.ulpWord[4] == IOERR_NO_RESOURCES)) {
2741 spin_unlock_irqrestore(&phba->hbalock, iflag);
2742 phba->lpfc_rampdown_queue_depth(phba);
2743 spin_lock_irqsave(&phba->hbalock, iflag);
2746 if (irsp->ulpStatus) {
2747 /* Rsp ring <ringno> error: IOCB */
2748 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
2749 "0328 Rsp Ring %d error: "
2754 "x%x x%x x%x x%x\n",
2756 irsp->un.ulpWord[0],
2757 irsp->un.ulpWord[1],
2758 irsp->un.ulpWord[2],
2759 irsp->un.ulpWord[3],
2760 irsp->un.ulpWord[4],
2761 irsp->un.ulpWord[5],
2762 *(((uint32_t *) irsp) + 6),
2763 *(((uint32_t *) irsp) + 7),
2764 *(((uint32_t *) irsp) + 8),
2765 *(((uint32_t *) irsp) + 9),
2766 *(((uint32_t *) irsp) + 10),
2767 *(((uint32_t *) irsp) + 11),
2768 *(((uint32_t *) irsp) + 12),
2769 *(((uint32_t *) irsp) + 13),
2770 *(((uint32_t *) irsp) + 14),
2771 *(((uint32_t *) irsp) + 15));
2775 * Fetch the IOCB command type and call the correct completion
2776 * routine. Solicited and Unsolicited IOCBs on the ELS ring
2777 * get freed back to the lpfc_iocb_list by the discovery
2780 iocb_cmd_type = irsp->ulpCommand & CMD_IOCB_MASK;
2781 type = lpfc_sli_iocb_cmd_type(iocb_cmd_type);
2784 spin_unlock_irqrestore(&phba->hbalock, iflag);
2785 rc = lpfc_sli_process_sol_iocb(phba, pring, saveq);
2786 spin_lock_irqsave(&phba->hbalock, iflag);
2789 case LPFC_UNSOL_IOCB:
2790 spin_unlock_irqrestore(&phba->hbalock, iflag);
2791 rc = lpfc_sli_process_unsol_iocb(phba, pring, saveq);
2792 spin_lock_irqsave(&phba->hbalock, iflag);
2797 case LPFC_ABORT_IOCB:
2799 if (irsp->ulpCommand != CMD_XRI_ABORTED_CX)
2800 cmdiocbp = lpfc_sli_iocbq_lookup(phba, pring,
2803 /* Call the specified completion routine */
2804 if (cmdiocbp->iocb_cmpl) {
2805 spin_unlock_irqrestore(&phba->hbalock,
2807 (cmdiocbp->iocb_cmpl)(phba, cmdiocbp,
2809 spin_lock_irqsave(&phba->hbalock,
2812 __lpfc_sli_release_iocbq(phba,
2817 case LPFC_UNKNOWN_IOCB:
2818 if (irsp->ulpCommand == CMD_ADAPTER_MSG) {
2819 char adaptermsg[LPFC_MAX_ADPTMSG];
2820 memset(adaptermsg, 0, LPFC_MAX_ADPTMSG);
2821 memcpy(&adaptermsg[0], (uint8_t *)irsp,
2823 dev_warn(&((phba->pcidev)->dev),
2825 phba->brd_no, adaptermsg);
2827 /* Unknown IOCB command */
2828 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2829 "0335 Unknown IOCB "
2830 "command Data: x%x "
2841 list_for_each_entry_safe(rspiocbp, next_iocb,
2842 &saveq->list, list) {
2843 list_del(&rspiocbp->list);
2844 __lpfc_sli_release_iocbq(phba, rspiocbp);
2846 __lpfc_sli_release_iocbq(phba, saveq);
2850 spin_unlock_irqrestore(&phba->hbalock, iflag);
2855 * lpfc_sli_handle_slow_ring_event - Wrapper func for handling slow-path iocbs
2856 * @phba: Pointer to HBA context object.
2857 * @pring: Pointer to driver SLI ring object.
2858 * @mask: Host attention register mask for this ring.
2860 * This routine wraps the actual slow_ring event process routine from the
2861 * API jump table function pointer from the lpfc_hba struct.
2864 lpfc_sli_handle_slow_ring_event(struct lpfc_hba *phba,
2865 struct lpfc_sli_ring *pring, uint32_t mask)
2867 phba->lpfc_sli_handle_slow_ring_event(phba, pring, mask);
2871 * lpfc_sli_handle_slow_ring_event_s3 - Handle SLI3 ring event for non-FCP rings
2872 * @phba: Pointer to HBA context object.
2873 * @pring: Pointer to driver SLI ring object.
2874 * @mask: Host attention register mask for this ring.
2876 * This function is called from the worker thread when there is a ring event
2877 * for non-fcp rings. The caller does not hold any lock. The function will
2878 * remove each response iocb in the response ring and calls the handle
2879 * response iocb routine (lpfc_sli_sp_handle_rspiocb) to process it.
2882 lpfc_sli_handle_slow_ring_event_s3(struct lpfc_hba *phba,
2883 struct lpfc_sli_ring *pring, uint32_t mask)
2885 struct lpfc_pgp *pgp;
2887 IOCB_t *irsp = NULL;
2888 struct lpfc_iocbq *rspiocbp = NULL;
2889 uint32_t portRspPut, portRspMax;
2890 unsigned long iflag;
2893 pgp = &phba->port_gp[pring->ringno];
2894 spin_lock_irqsave(&phba->hbalock, iflag);
2895 pring->stats.iocb_event++;
2898 * The next available response entry should never exceed the maximum
2899 * entries. If it does, treat it as an adapter hardware error.
2901 portRspMax = pring->numRiocb;
2902 portRspPut = le32_to_cpu(pgp->rspPutInx);
2903 if (portRspPut >= portRspMax) {
2905 * Ring <ringno> handler: portRspPut <portRspPut> is bigger than
2906 * rsp ring <portRspMax>
2908 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2909 "0303 Ring %d handler: portRspPut %d "
2910 "is bigger than rsp ring %d\n",
2911 pring->ringno, portRspPut, portRspMax);
2913 phba->link_state = LPFC_HBA_ERROR;
2914 spin_unlock_irqrestore(&phba->hbalock, iflag);
2916 phba->work_hs = HS_FFER3;
2917 lpfc_handle_eratt(phba);
2923 while (pring->rspidx != portRspPut) {
2925 * Build a completion list and call the appropriate handler.
2926 * The process is to get the next available response iocb, get
2927 * a free iocb from the list, copy the response data into the
2928 * free iocb, insert to the continuation list, and update the
2929 * next response index to slim. This process makes response
2930 * iocb's in the ring available to DMA as fast as possible but
2931 * pays a penalty for a copy operation. Since the iocb is
2932 * only 32 bytes, this penalty is considered small relative to
2933 * the PCI reads for register values and a slim write. When
2934 * the ulpLe field is set, the entire Command has been
2937 entry = lpfc_resp_iocb(phba, pring);
2939 phba->last_completion_time = jiffies;
2940 rspiocbp = __lpfc_sli_get_iocbq(phba);
2941 if (rspiocbp == NULL) {
2942 printk(KERN_ERR "%s: out of buffers! Failing "
2943 "completion.\n", __func__);
2947 lpfc_sli_pcimem_bcopy(entry, &rspiocbp->iocb,
2948 phba->iocb_rsp_size);
2949 irsp = &rspiocbp->iocb;
2951 if (++pring->rspidx >= portRspMax)
2954 if (pring->ringno == LPFC_ELS_RING) {
2955 lpfc_debugfs_slow_ring_trc(phba,
2956 "IOCB rsp ring: wd4:x%08x wd6:x%08x wd7:x%08x",
2957 *(((uint32_t *) irsp) + 4),
2958 *(((uint32_t *) irsp) + 6),
2959 *(((uint32_t *) irsp) + 7));
2962 writel(pring->rspidx, &phba->host_gp[pring->ringno].rspGetInx);
2964 spin_unlock_irqrestore(&phba->hbalock, iflag);
2965 /* Handle the response IOCB */
2966 rspiocbp = lpfc_sli_sp_handle_rspiocb(phba, pring, rspiocbp);
2967 spin_lock_irqsave(&phba->hbalock, iflag);
2970 * If the port response put pointer has not been updated, sync
2971 * the pgp->rspPutInx in the MAILBOX_tand fetch the new port
2972 * response put pointer.
2974 if (pring->rspidx == portRspPut) {
2975 portRspPut = le32_to_cpu(pgp->rspPutInx);
2977 } /* while (pring->rspidx != portRspPut) */
2979 if ((rspiocbp != NULL) && (mask & HA_R0RE_REQ)) {
2980 /* At least one response entry has been freed */
2981 pring->stats.iocb_rsp_full++;
2982 /* SET RxRE_RSP in Chip Att register */
2983 status = ((CA_R0ATT | CA_R0RE_RSP) << (pring->ringno * 4));
2984 writel(status, phba->CAregaddr);
2985 readl(phba->CAregaddr); /* flush */
2987 if ((mask & HA_R0CE_RSP) && (pring->flag & LPFC_CALL_RING_AVAILABLE)) {
2988 pring->flag &= ~LPFC_CALL_RING_AVAILABLE;
2989 pring->stats.iocb_cmd_empty++;
2991 /* Force update of the local copy of cmdGetInx */
2992 pring->local_getidx = le32_to_cpu(pgp->cmdGetInx);
2993 lpfc_sli_resume_iocb(phba, pring);
2995 if ((pring->lpfc_sli_cmd_available))
2996 (pring->lpfc_sli_cmd_available) (phba, pring);
3000 spin_unlock_irqrestore(&phba->hbalock, iflag);
3005 * lpfc_sli_handle_slow_ring_event_s4 - Handle SLI4 slow-path els events
3006 * @phba: Pointer to HBA context object.
3007 * @pring: Pointer to driver SLI ring object.
3008 * @mask: Host attention register mask for this ring.
3010 * This function is called from the worker thread when there is a pending
3011 * ELS response iocb on the driver internal slow-path response iocb worker
3012 * queue. The caller does not hold any lock. The function will remove each
3013 * response iocb from the response worker queue and calls the handle
3014 * response iocb routine (lpfc_sli_sp_handle_rspiocb) to process it.
3017 lpfc_sli_handle_slow_ring_event_s4(struct lpfc_hba *phba,
3018 struct lpfc_sli_ring *pring, uint32_t mask)
3020 struct lpfc_iocbq *irspiocbq;
3021 unsigned long iflag;
3023 while (!list_empty(&phba->sli4_hba.sp_rspiocb_work_queue)) {
3024 /* Get the response iocb from the head of work queue */
3025 spin_lock_irqsave(&phba->hbalock, iflag);
3026 list_remove_head(&phba->sli4_hba.sp_rspiocb_work_queue,
3027 irspiocbq, struct lpfc_iocbq, list);
3028 spin_unlock_irqrestore(&phba->hbalock, iflag);
3029 /* Process the response iocb */
3030 lpfc_sli_sp_handle_rspiocb(phba, pring, irspiocbq);
3035 * lpfc_sli_abort_iocb_ring - Abort all iocbs in the ring
3036 * @phba: Pointer to HBA context object.
3037 * @pring: Pointer to driver SLI ring object.
3039 * This function aborts all iocbs in the given ring and frees all the iocb
3040 * objects in txq. This function issues an abort iocb for all the iocb commands
3041 * in txcmplq. The iocbs in the txcmplq is not guaranteed to complete before
3042 * the return of this function. The caller is not required to hold any locks.
3045 lpfc_sli_abort_iocb_ring(struct lpfc_hba *phba, struct lpfc_sli_ring *pring)
3047 LIST_HEAD(completions);
3048 struct lpfc_iocbq *iocb, *next_iocb;
3050 if (pring->ringno == LPFC_ELS_RING) {
3051 lpfc_fabric_abort_hba(phba);
3054 /* Error everything on txq and txcmplq
3057 spin_lock_irq(&phba->hbalock);
3058 list_splice_init(&pring->txq, &completions);
3061 /* Next issue ABTS for everything on the txcmplq */
3062 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq, list)
3063 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
3065 spin_unlock_irq(&phba->hbalock);
3067 /* Cancel all the IOCBs from the completions list */
3068 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
3073 * lpfc_sli_flush_fcp_rings - flush all iocbs in the fcp ring
3074 * @phba: Pointer to HBA context object.
3076 * This function flushes all iocbs in the fcp ring and frees all the iocb
3077 * objects in txq and txcmplq. This function will not issue abort iocbs
3078 * for all the iocb commands in txcmplq, they will just be returned with
3079 * IOERR_SLI_DOWN. This function is invoked with EEH when device's PCI
3080 * slot has been permanently disabled.
3083 lpfc_sli_flush_fcp_rings(struct lpfc_hba *phba)
3087 struct lpfc_sli *psli = &phba->sli;
3088 struct lpfc_sli_ring *pring;
3090 /* Currently, only one fcp ring */
3091 pring = &psli->ring[psli->fcp_ring];
3093 spin_lock_irq(&phba->hbalock);
3094 /* Retrieve everything on txq */
3095 list_splice_init(&pring->txq, &txq);
3098 /* Retrieve everything on the txcmplq */
3099 list_splice_init(&pring->txcmplq, &txcmplq);
3100 pring->txcmplq_cnt = 0;
3101 spin_unlock_irq(&phba->hbalock);
3104 lpfc_sli_cancel_iocbs(phba, &txq, IOSTAT_LOCAL_REJECT,
3107 /* Flush the txcmpq */
3108 lpfc_sli_cancel_iocbs(phba, &txcmplq, IOSTAT_LOCAL_REJECT,
3113 * lpfc_sli_brdready_s3 - Check for sli3 host ready status
3114 * @phba: Pointer to HBA context object.
3115 * @mask: Bit mask to be checked.
3117 * This function reads the host status register and compares
3118 * with the provided bit mask to check if HBA completed
3119 * the restart. This function will wait in a loop for the
3120 * HBA to complete restart. If the HBA does not restart within
3121 * 15 iterations, the function will reset the HBA again. The
3122 * function returns 1 when HBA fail to restart otherwise returns
3126 lpfc_sli_brdready_s3(struct lpfc_hba *phba, uint32_t mask)
3132 /* Read the HBA Host Status Register */
3133 status = readl(phba->HSregaddr);
3136 * Check status register every 100ms for 5 retries, then every
3137 * 500ms for 5, then every 2.5 sec for 5, then reset board and
3138 * every 2.5 sec for 4.
3139 * Break our of the loop if errors occurred during init.
3141 while (((status & mask) != mask) &&
3142 !(status & HS_FFERM) &&
3154 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
3155 lpfc_sli_brdrestart(phba);
3157 /* Read the HBA Host Status Register */
3158 status = readl(phba->HSregaddr);
3161 /* Check to see if any errors occurred during init */
3162 if ((status & HS_FFERM) || (i >= 20)) {
3163 phba->link_state = LPFC_HBA_ERROR;
3171 * lpfc_sli_brdready_s4 - Check for sli4 host ready status
3172 * @phba: Pointer to HBA context object.
3173 * @mask: Bit mask to be checked.
3175 * This function checks the host status register to check if HBA is
3176 * ready. This function will wait in a loop for the HBA to be ready
3177 * If the HBA is not ready , the function will will reset the HBA PCI
3178 * function again. The function returns 1 when HBA fail to be ready
3179 * otherwise returns zero.
3182 lpfc_sli_brdready_s4(struct lpfc_hba *phba, uint32_t mask)
3187 /* Read the HBA Host Status Register */
3188 status = lpfc_sli4_post_status_check(phba);
3191 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
3192 lpfc_sli_brdrestart(phba);
3193 status = lpfc_sli4_post_status_check(phba);
3196 /* Check to see if any errors occurred during init */
3198 phba->link_state = LPFC_HBA_ERROR;
3201 phba->sli4_hba.intr_enable = 0;
3207 * lpfc_sli_brdready - Wrapper func for checking the hba readyness
3208 * @phba: Pointer to HBA context object.
3209 * @mask: Bit mask to be checked.
3211 * This routine wraps the actual SLI3 or SLI4 hba readyness check routine
3212 * from the API jump table function pointer from the lpfc_hba struct.
3215 lpfc_sli_brdready(struct lpfc_hba *phba, uint32_t mask)
3217 return phba->lpfc_sli_brdready(phba, mask);
3220 #define BARRIER_TEST_PATTERN (0xdeadbeef)
3223 * lpfc_reset_barrier - Make HBA ready for HBA reset
3224 * @phba: Pointer to HBA context object.
3226 * This function is called before resetting an HBA. This
3227 * function requests HBA to quiesce DMAs before a reset.
3229 void lpfc_reset_barrier(struct lpfc_hba *phba)
3231 uint32_t __iomem *resp_buf;
3232 uint32_t __iomem *mbox_buf;
3233 volatile uint32_t mbox;
3238 pci_read_config_byte(phba->pcidev, PCI_HEADER_TYPE, &hdrtype);
3239 if (hdrtype != 0x80 ||
3240 (FC_JEDEC_ID(phba->vpd.rev.biuRev) != HELIOS_JEDEC_ID &&
3241 FC_JEDEC_ID(phba->vpd.rev.biuRev) != THOR_JEDEC_ID))
3245 * Tell the other part of the chip to suspend temporarily all
3248 resp_buf = phba->MBslimaddr;
3250 /* Disable the error attention */
3251 hc_copy = readl(phba->HCregaddr);
3252 writel((hc_copy & ~HC_ERINT_ENA), phba->HCregaddr);
3253 readl(phba->HCregaddr); /* flush */
3254 phba->link_flag |= LS_IGNORE_ERATT;
3256 if (readl(phba->HAregaddr) & HA_ERATT) {
3257 /* Clear Chip error bit */
3258 writel(HA_ERATT, phba->HAregaddr);
3259 phba->pport->stopped = 1;
3263 ((MAILBOX_t *)&mbox)->mbxCommand = MBX_KILL_BOARD;
3264 ((MAILBOX_t *)&mbox)->mbxOwner = OWN_CHIP;
3266 writel(BARRIER_TEST_PATTERN, (resp_buf + 1));
3267 mbox_buf = phba->MBslimaddr;
3268 writel(mbox, mbox_buf);
3271 readl(resp_buf + 1) != ~(BARRIER_TEST_PATTERN) && i < 50; i++)
3274 if (readl(resp_buf + 1) != ~(BARRIER_TEST_PATTERN)) {
3275 if (phba->sli.sli_flag & LPFC_SLI2_ACTIVE ||
3276 phba->pport->stopped)
3282 ((MAILBOX_t *)&mbox)->mbxOwner = OWN_HOST;
3283 for (i = 0; readl(resp_buf) != mbox && i < 500; i++)
3288 while (!(readl(phba->HAregaddr) & HA_ERATT) && ++i < 500)
3291 if (readl(phba->HAregaddr) & HA_ERATT) {
3292 writel(HA_ERATT, phba->HAregaddr);
3293 phba->pport->stopped = 1;
3297 phba->link_flag &= ~LS_IGNORE_ERATT;
3298 writel(hc_copy, phba->HCregaddr);
3299 readl(phba->HCregaddr); /* flush */
3303 * lpfc_sli_brdkill - Issue a kill_board mailbox command
3304 * @phba: Pointer to HBA context object.
3306 * This function issues a kill_board mailbox command and waits for
3307 * the error attention interrupt. This function is called for stopping
3308 * the firmware processing. The caller is not required to hold any
3309 * locks. This function calls lpfc_hba_down_post function to free
3310 * any pending commands after the kill. The function will return 1 when it
3311 * fails to kill the board else will return 0.
3314 lpfc_sli_brdkill(struct lpfc_hba *phba)
3316 struct lpfc_sli *psli;
3326 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3327 "0329 Kill HBA Data: x%x x%x\n",
3328 phba->pport->port_state, psli->sli_flag);
3330 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3334 /* Disable the error attention */
3335 spin_lock_irq(&phba->hbalock);
3336 status = readl(phba->HCregaddr);
3337 status &= ~HC_ERINT_ENA;
3338 writel(status, phba->HCregaddr);
3339 readl(phba->HCregaddr); /* flush */
3340 phba->link_flag |= LS_IGNORE_ERATT;
3341 spin_unlock_irq(&phba->hbalock);
3343 lpfc_kill_board(phba, pmb);
3344 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
3345 retval = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
3347 if (retval != MBX_SUCCESS) {
3348 if (retval != MBX_BUSY)
3349 mempool_free(pmb, phba->mbox_mem_pool);
3350 spin_lock_irq(&phba->hbalock);
3351 phba->link_flag &= ~LS_IGNORE_ERATT;
3352 spin_unlock_irq(&phba->hbalock);
3356 psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
3358 mempool_free(pmb, phba->mbox_mem_pool);
3360 /* There is no completion for a KILL_BOARD mbox cmd. Check for an error
3361 * attention every 100ms for 3 seconds. If we don't get ERATT after
3362 * 3 seconds we still set HBA_ERROR state because the status of the
3363 * board is now undefined.
3365 ha_copy = readl(phba->HAregaddr);
3367 while ((i++ < 30) && !(ha_copy & HA_ERATT)) {
3369 ha_copy = readl(phba->HAregaddr);
3372 del_timer_sync(&psli->mbox_tmo);
3373 if (ha_copy & HA_ERATT) {
3374 writel(HA_ERATT, phba->HAregaddr);
3375 phba->pport->stopped = 1;
3377 spin_lock_irq(&phba->hbalock);
3378 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
3379 psli->mbox_active = NULL;
3380 phba->link_flag &= ~LS_IGNORE_ERATT;
3381 spin_unlock_irq(&phba->hbalock);
3383 lpfc_hba_down_post(phba);
3384 phba->link_state = LPFC_HBA_ERROR;
3386 return ha_copy & HA_ERATT ? 0 : 1;
3390 * lpfc_sli_brdreset - Reset a sli-2 or sli-3 HBA
3391 * @phba: Pointer to HBA context object.
3393 * This function resets the HBA by writing HC_INITFF to the control
3394 * register. After the HBA resets, this function resets all the iocb ring
3395 * indices. This function disables PCI layer parity checking during
3397 * This function returns 0 always.
3398 * The caller is not required to hold any locks.
3401 lpfc_sli_brdreset(struct lpfc_hba *phba)
3403 struct lpfc_sli *psli;
3404 struct lpfc_sli_ring *pring;
3411 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3412 "0325 Reset HBA Data: x%x x%x\n",
3413 phba->pport->port_state, psli->sli_flag);
3415 /* perform board reset */
3416 phba->fc_eventTag = 0;
3417 phba->pport->fc_myDID = 0;
3418 phba->pport->fc_prevDID = 0;
3420 /* Turn off parity checking and serr during the physical reset */
3421 pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value);
3422 pci_write_config_word(phba->pcidev, PCI_COMMAND,
3424 ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
3426 psli->sli_flag &= ~(LPFC_SLI_ACTIVE | LPFC_PROCESS_LA);
3428 /* Now toggle INITFF bit in the Host Control Register */
3429 writel(HC_INITFF, phba->HCregaddr);
3431 readl(phba->HCregaddr); /* flush */
3432 writel(0, phba->HCregaddr);
3433 readl(phba->HCregaddr); /* flush */
3435 /* Restore PCI cmd register */
3436 pci_write_config_word(phba->pcidev, PCI_COMMAND, cfg_value);
3438 /* Initialize relevant SLI info */
3439 for (i = 0; i < psli->num_rings; i++) {
3440 pring = &psli->ring[i];
3443 pring->next_cmdidx = 0;
3444 pring->local_getidx = 0;
3446 pring->missbufcnt = 0;
3449 phba->link_state = LPFC_WARM_START;
3454 * lpfc_sli4_brdreset - Reset a sli-4 HBA
3455 * @phba: Pointer to HBA context object.
3457 * This function resets a SLI4 HBA. This function disables PCI layer parity
3458 * checking during resets the device. The caller is not required to hold
3461 * This function returns 0 always.
3464 lpfc_sli4_brdreset(struct lpfc_hba *phba)
3466 struct lpfc_sli *psli = &phba->sli;
3471 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3472 "0295 Reset HBA Data: x%x x%x\n",
3473 phba->pport->port_state, psli->sli_flag);
3475 /* perform board reset */
3476 phba->fc_eventTag = 0;
3477 phba->pport->fc_myDID = 0;
3478 phba->pport->fc_prevDID = 0;
3480 /* Turn off parity checking and serr during the physical reset */
3481 pci_read_config_word(phba->pcidev, PCI_COMMAND, &cfg_value);
3482 pci_write_config_word(phba->pcidev, PCI_COMMAND,
3484 ~(PCI_COMMAND_PARITY | PCI_COMMAND_SERR)));
3486 spin_lock_irq(&phba->hbalock);
3487 psli->sli_flag &= ~(LPFC_PROCESS_LA);
3488 phba->fcf.fcf_flag = 0;
3489 /* Clean up the child queue list for the CQs */
3490 list_del_init(&phba->sli4_hba.mbx_wq->list);
3491 list_del_init(&phba->sli4_hba.els_wq->list);
3492 list_del_init(&phba->sli4_hba.hdr_rq->list);
3493 list_del_init(&phba->sli4_hba.dat_rq->list);
3494 list_del_init(&phba->sli4_hba.mbx_cq->list);
3495 list_del_init(&phba->sli4_hba.els_cq->list);
3496 list_del_init(&phba->sli4_hba.rxq_cq->list);
3497 for (qindx = 0; qindx < phba->cfg_fcp_wq_count; qindx++)
3498 list_del_init(&phba->sli4_hba.fcp_wq[qindx]->list);
3499 for (qindx = 0; qindx < phba->cfg_fcp_eq_count; qindx++)
3500 list_del_init(&phba->sli4_hba.fcp_cq[qindx]->list);
3501 spin_unlock_irq(&phba->hbalock);
3503 /* Now physically reset the device */
3504 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3505 "0389 Performing PCI function reset!\n");
3506 /* Perform FCoE PCI function reset */
3507 lpfc_pci_function_reset(phba);
3513 * lpfc_sli_brdrestart_s3 - Restart a sli-3 hba
3514 * @phba: Pointer to HBA context object.
3516 * This function is called in the SLI initialization code path to
3517 * restart the HBA. The caller is not required to hold any lock.
3518 * This function writes MBX_RESTART mailbox command to the SLIM and
3519 * resets the HBA. At the end of the function, it calls lpfc_hba_down_post
3520 * function to free any pending commands. The function enables
3521 * POST only during the first initialization. The function returns zero.
3522 * The function does not guarantee completion of MBX_RESTART mailbox
3523 * command before the return of this function.
3526 lpfc_sli_brdrestart_s3(struct lpfc_hba *phba)
3529 struct lpfc_sli *psli;
3530 volatile uint32_t word0;
3531 void __iomem *to_slim;
3533 spin_lock_irq(&phba->hbalock);
3538 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3539 "0337 Restart HBA Data: x%x x%x\n",
3540 phba->pport->port_state, psli->sli_flag);
3543 mb = (MAILBOX_t *) &word0;
3544 mb->mbxCommand = MBX_RESTART;
3547 lpfc_reset_barrier(phba);
3549 to_slim = phba->MBslimaddr;
3550 writel(*(uint32_t *) mb, to_slim);
3551 readl(to_slim); /* flush */
3553 /* Only skip post after fc_ffinit is completed */
3554 if (phba->pport->port_state)
3555 word0 = 1; /* This is really setting up word1 */
3557 word0 = 0; /* This is really setting up word1 */
3558 to_slim = phba->MBslimaddr + sizeof (uint32_t);
3559 writel(*(uint32_t *) mb, to_slim);
3560 readl(to_slim); /* flush */
3562 lpfc_sli_brdreset(phba);
3563 phba->pport->stopped = 0;
3564 phba->link_state = LPFC_INIT_START;
3566 spin_unlock_irq(&phba->hbalock);
3568 memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets));
3569 psli->stats_start = get_seconds();
3571 /* Give the INITFF and Post time to settle. */
3574 lpfc_hba_down_post(phba);
3580 * lpfc_sli_brdrestart_s4 - Restart the sli-4 hba
3581 * @phba: Pointer to HBA context object.
3583 * This function is called in the SLI initialization code path to restart
3584 * a SLI4 HBA. The caller is not required to hold any lock.
3585 * At the end of the function, it calls lpfc_hba_down_post function to
3586 * free any pending commands.
3589 lpfc_sli_brdrestart_s4(struct lpfc_hba *phba)
3591 struct lpfc_sli *psli = &phba->sli;
3595 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3596 "0296 Restart HBA Data: x%x x%x\n",
3597 phba->pport->port_state, psli->sli_flag);
3599 lpfc_sli4_brdreset(phba);
3601 spin_lock_irq(&phba->hbalock);
3602 phba->pport->stopped = 0;
3603 phba->link_state = LPFC_INIT_START;
3605 spin_unlock_irq(&phba->hbalock);
3607 memset(&psli->lnk_stat_offsets, 0, sizeof(psli->lnk_stat_offsets));
3608 psli->stats_start = get_seconds();
3610 lpfc_hba_down_post(phba);
3616 * lpfc_sli_brdrestart - Wrapper func for restarting hba
3617 * @phba: Pointer to HBA context object.
3619 * This routine wraps the actual SLI3 or SLI4 hba restart routine from the
3620 * API jump table function pointer from the lpfc_hba struct.
3623 lpfc_sli_brdrestart(struct lpfc_hba *phba)
3625 return phba->lpfc_sli_brdrestart(phba);
3629 * lpfc_sli_chipset_init - Wait for the restart of the HBA after a restart
3630 * @phba: Pointer to HBA context object.
3632 * This function is called after a HBA restart to wait for successful
3633 * restart of the HBA. Successful restart of the HBA is indicated by
3634 * HS_FFRDY and HS_MBRDY bits. If the HBA fails to restart even after 15
3635 * iteration, the function will restart the HBA again. The function returns
3636 * zero if HBA successfully restarted else returns negative error code.
3639 lpfc_sli_chipset_init(struct lpfc_hba *phba)
3641 uint32_t status, i = 0;
3643 /* Read the HBA Host Status Register */
3644 status = readl(phba->HSregaddr);
3646 /* Check status register to see what current state is */
3648 while ((status & (HS_FFRDY | HS_MBRDY)) != (HS_FFRDY | HS_MBRDY)) {
3650 /* Check every 100ms for 5 retries, then every 500ms for 5, then
3651 * every 2.5 sec for 5, then reset board and every 2.5 sec for
3655 /* Adapter failed to init, timeout, status reg
3657 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3658 "0436 Adapter failed to init, "
3659 "timeout, status reg x%x, "
3660 "FW Data: A8 x%x AC x%x\n", status,
3661 readl(phba->MBslimaddr + 0xa8),
3662 readl(phba->MBslimaddr + 0xac));
3663 phba->link_state = LPFC_HBA_ERROR;
3667 /* Check to see if any errors occurred during init */
3668 if (status & HS_FFERM) {
3669 /* ERROR: During chipset initialization */
3670 /* Adapter failed to init, chipset, status reg
3672 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3673 "0437 Adapter failed to init, "
3674 "chipset, status reg x%x, "
3675 "FW Data: A8 x%x AC x%x\n", status,
3676 readl(phba->MBslimaddr + 0xa8),
3677 readl(phba->MBslimaddr + 0xac));
3678 phba->link_state = LPFC_HBA_ERROR;
3684 } else if (i <= 10) {
3692 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
3693 lpfc_sli_brdrestart(phba);
3695 /* Read the HBA Host Status Register */
3696 status = readl(phba->HSregaddr);
3699 /* Check to see if any errors occurred during init */
3700 if (status & HS_FFERM) {
3701 /* ERROR: During chipset initialization */
3702 /* Adapter failed to init, chipset, status reg <status> */
3703 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3704 "0438 Adapter failed to init, chipset, "
3706 "FW Data: A8 x%x AC x%x\n", status,
3707 readl(phba->MBslimaddr + 0xa8),
3708 readl(phba->MBslimaddr + 0xac));
3709 phba->link_state = LPFC_HBA_ERROR;
3713 /* Clear all interrupt enable conditions */
3714 writel(0, phba->HCregaddr);
3715 readl(phba->HCregaddr); /* flush */
3717 /* setup host attn register */
3718 writel(0xffffffff, phba->HAregaddr);
3719 readl(phba->HAregaddr); /* flush */
3724 * lpfc_sli_hbq_count - Get the number of HBQs to be configured
3726 * This function calculates and returns the number of HBQs required to be
3730 lpfc_sli_hbq_count(void)
3732 return ARRAY_SIZE(lpfc_hbq_defs);
3736 * lpfc_sli_hbq_entry_count - Calculate total number of hbq entries
3738 * This function adds the number of hbq entries in every HBQ to get
3739 * the total number of hbq entries required for the HBA and returns
3743 lpfc_sli_hbq_entry_count(void)
3745 int hbq_count = lpfc_sli_hbq_count();
3749 for (i = 0; i < hbq_count; ++i)
3750 count += lpfc_hbq_defs[i]->entry_count;
3755 * lpfc_sli_hbq_size - Calculate memory required for all hbq entries
3757 * This function calculates amount of memory required for all hbq entries
3758 * to be configured and returns the total memory required.
3761 lpfc_sli_hbq_size(void)
3763 return lpfc_sli_hbq_entry_count() * sizeof(struct lpfc_hbq_entry);
3767 * lpfc_sli_hbq_setup - configure and initialize HBQs
3768 * @phba: Pointer to HBA context object.
3770 * This function is called during the SLI initialization to configure
3771 * all the HBQs and post buffers to the HBQ. The caller is not
3772 * required to hold any locks. This function will return zero if successful
3773 * else it will return negative error code.
3776 lpfc_sli_hbq_setup(struct lpfc_hba *phba)
3778 int hbq_count = lpfc_sli_hbq_count();
3782 uint32_t hbq_entry_index;
3784 /* Get a Mailbox buffer to setup mailbox
3785 * commands for HBA initialization
3787 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3794 /* Initialize the struct lpfc_sli_hbq structure for each hbq */
3795 phba->link_state = LPFC_INIT_MBX_CMDS;
3796 phba->hbq_in_use = 1;
3798 hbq_entry_index = 0;
3799 for (hbqno = 0; hbqno < hbq_count; ++hbqno) {
3800 phba->hbqs[hbqno].next_hbqPutIdx = 0;
3801 phba->hbqs[hbqno].hbqPutIdx = 0;
3802 phba->hbqs[hbqno].local_hbqGetIdx = 0;
3803 phba->hbqs[hbqno].entry_count =
3804 lpfc_hbq_defs[hbqno]->entry_count;
3805 lpfc_config_hbq(phba, hbqno, lpfc_hbq_defs[hbqno],
3806 hbq_entry_index, pmb);
3807 hbq_entry_index += phba->hbqs[hbqno].entry_count;
3809 if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
3810 /* Adapter failed to init, mbxCmd <cmd> CFG_RING,
3811 mbxStatus <status>, ring <num> */
3813 lpfc_printf_log(phba, KERN_ERR,
3814 LOG_SLI | LOG_VPORT,
3815 "1805 Adapter failed to init. "
3816 "Data: x%x x%x x%x\n",
3818 pmbox->mbxStatus, hbqno);
3820 phba->link_state = LPFC_HBA_ERROR;
3821 mempool_free(pmb, phba->mbox_mem_pool);
3825 phba->hbq_count = hbq_count;
3827 mempool_free(pmb, phba->mbox_mem_pool);
3829 /* Initially populate or replenish the HBQs */
3830 for (hbqno = 0; hbqno < hbq_count; ++hbqno)
3831 lpfc_sli_hbqbuf_init_hbqs(phba, hbqno);
3836 * lpfc_sli4_rb_setup - Initialize and post RBs to HBA
3837 * @phba: Pointer to HBA context object.
3839 * This function is called during the SLI initialization to configure
3840 * all the HBQs and post buffers to the HBQ. The caller is not
3841 * required to hold any locks. This function will return zero if successful
3842 * else it will return negative error code.
3845 lpfc_sli4_rb_setup(struct lpfc_hba *phba)
3847 phba->hbq_in_use = 1;
3848 phba->hbqs[0].entry_count = lpfc_hbq_defs[0]->entry_count;
3849 phba->hbq_count = 1;
3850 /* Initially populate or replenish the HBQs */
3851 lpfc_sli_hbqbuf_init_hbqs(phba, 0);
3856 * lpfc_sli_config_port - Issue config port mailbox command
3857 * @phba: Pointer to HBA context object.
3858 * @sli_mode: sli mode - 2/3
3860 * This function is called by the sli intialization code path
3861 * to issue config_port mailbox command. This function restarts the
3862 * HBA firmware and issues a config_port mailbox command to configure
3863 * the SLI interface in the sli mode specified by sli_mode
3864 * variable. The caller is not required to hold any locks.
3865 * The function returns 0 if successful, else returns negative error
3869 lpfc_sli_config_port(struct lpfc_hba *phba, int sli_mode)
3872 uint32_t resetcount = 0, rc = 0, done = 0;
3874 pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3876 phba->link_state = LPFC_HBA_ERROR;
3880 phba->sli_rev = sli_mode;
3881 while (resetcount < 2 && !done) {
3882 spin_lock_irq(&phba->hbalock);
3883 phba->sli.sli_flag |= LPFC_SLI_MBOX_ACTIVE;
3884 spin_unlock_irq(&phba->hbalock);
3885 phba->pport->port_state = LPFC_VPORT_UNKNOWN;
3886 lpfc_sli_brdrestart(phba);
3887 rc = lpfc_sli_chipset_init(phba);
3891 spin_lock_irq(&phba->hbalock);
3892 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
3893 spin_unlock_irq(&phba->hbalock);
3896 /* Call pre CONFIG_PORT mailbox command initialization. A
3897 * value of 0 means the call was successful. Any other
3898 * nonzero value is a failure, but if ERESTART is returned,
3899 * the driver may reset the HBA and try again.
3901 rc = lpfc_config_port_prep(phba);
3902 if (rc == -ERESTART) {
3903 phba->link_state = LPFC_LINK_UNKNOWN;
3907 phba->link_state = LPFC_INIT_MBX_CMDS;
3908 lpfc_config_port(phba, pmb);
3909 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
3910 phba->sli3_options &= ~(LPFC_SLI3_NPIV_ENABLED |
3911 LPFC_SLI3_HBQ_ENABLED |
3912 LPFC_SLI3_CRP_ENABLED |
3913 LPFC_SLI3_INB_ENABLED |
3914 LPFC_SLI3_BG_ENABLED);
3915 if (rc != MBX_SUCCESS) {
3916 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3917 "0442 Adapter failed to init, mbxCmd x%x "
3918 "CONFIG_PORT, mbxStatus x%x Data: x%x\n",
3919 pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus, 0);
3920 spin_lock_irq(&phba->hbalock);
3921 phba->sli.sli_flag &= ~LPFC_SLI_ACTIVE;
3922 spin_unlock_irq(&phba->hbalock);
3925 /* Allow asynchronous mailbox command to go through */
3926 spin_lock_irq(&phba->hbalock);
3927 phba->sli.sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK;
3928 spin_unlock_irq(&phba->hbalock);
3934 goto do_prep_failed;
3936 if (pmb->u.mb.un.varCfgPort.sli_mode == 3) {
3937 if (!pmb->u.mb.un.varCfgPort.cMA) {
3939 goto do_prep_failed;
3941 if (phba->max_vpi && pmb->u.mb.un.varCfgPort.gmv) {
3942 phba->sli3_options |= LPFC_SLI3_NPIV_ENABLED;
3943 phba->max_vpi = pmb->u.mb.un.varCfgPort.max_vpi;
3944 phba->max_vports = (phba->max_vpi > phba->max_vports) ?
3945 phba->max_vpi : phba->max_vports;
3949 if (pmb->u.mb.un.varCfgPort.gdss)
3950 phba->sli3_options |= LPFC_SLI3_DSS_ENABLED;
3951 if (pmb->u.mb.un.varCfgPort.gerbm)
3952 phba->sli3_options |= LPFC_SLI3_HBQ_ENABLED;
3953 if (pmb->u.mb.un.varCfgPort.gcrp)
3954 phba->sli3_options |= LPFC_SLI3_CRP_ENABLED;
3955 if (pmb->u.mb.un.varCfgPort.ginb) {
3956 phba->sli3_options |= LPFC_SLI3_INB_ENABLED;
3957 phba->hbq_get = phba->mbox->us.s3_inb_pgp.hbq_get;
3958 phba->port_gp = phba->mbox->us.s3_inb_pgp.port;
3959 phba->inb_ha_copy = &phba->mbox->us.s3_inb_pgp.ha_copy;
3960 phba->inb_counter = &phba->mbox->us.s3_inb_pgp.counter;
3961 phba->inb_last_counter =
3962 phba->mbox->us.s3_inb_pgp.counter;
3964 phba->hbq_get = phba->mbox->us.s3_pgp.hbq_get;
3965 phba->port_gp = phba->mbox->us.s3_pgp.port;
3966 phba->inb_ha_copy = NULL;
3967 phba->inb_counter = NULL;
3970 if (phba->cfg_enable_bg) {
3971 if (pmb->u.mb.un.varCfgPort.gbg)
3972 phba->sli3_options |= LPFC_SLI3_BG_ENABLED;
3974 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3975 "0443 Adapter did not grant "
3979 phba->hbq_get = NULL;
3980 phba->port_gp = phba->mbox->us.s2.port;
3981 phba->inb_ha_copy = NULL;
3982 phba->inb_counter = NULL;
3986 mempool_free(pmb, phba->mbox_mem_pool);
3992 * lpfc_sli_hba_setup - SLI intialization function
3993 * @phba: Pointer to HBA context object.
3995 * This function is the main SLI intialization function. This function
3996 * is called by the HBA intialization code, HBA reset code and HBA
3997 * error attention handler code. Caller is not required to hold any
3998 * locks. This function issues config_port mailbox command to configure
3999 * the SLI, setup iocb rings and HBQ rings. In the end the function
4000 * calls the config_port_post function to issue init_link mailbox
4001 * command and to start the discovery. The function will return zero
4002 * if successful, else it will return negative error code.
4005 lpfc_sli_hba_setup(struct lpfc_hba *phba)
4010 switch (lpfc_sli_mode) {
4012 if (phba->cfg_enable_npiv) {
4013 lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT,
4014 "1824 NPIV enabled: Override lpfc_sli_mode "
4015 "parameter (%d) to auto (0).\n",
4025 lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT,
4026 "1819 Unrecognized lpfc_sli_mode "
4027 "parameter: %d.\n", lpfc_sli_mode);
4032 rc = lpfc_sli_config_port(phba, mode);
4034 if (rc && lpfc_sli_mode == 3)
4035 lpfc_printf_log(phba, KERN_ERR, LOG_INIT | LOG_VPORT,
4036 "1820 Unable to select SLI-3. "
4037 "Not supported by adapter.\n");
4038 if (rc && mode != 2)
4039 rc = lpfc_sli_config_port(phba, 2);
4041 goto lpfc_sli_hba_setup_error;
4043 if (phba->sli_rev == 3) {
4044 phba->iocb_cmd_size = SLI3_IOCB_CMD_SIZE;
4045 phba->iocb_rsp_size = SLI3_IOCB_RSP_SIZE;
4047 phba->iocb_cmd_size = SLI2_IOCB_CMD_SIZE;
4048 phba->iocb_rsp_size = SLI2_IOCB_RSP_SIZE;
4049 phba->sli3_options = 0;
4052 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4053 "0444 Firmware in SLI %x mode. Max_vpi %d\n",
4054 phba->sli_rev, phba->max_vpi);
4055 rc = lpfc_sli_ring_map(phba);
4058 goto lpfc_sli_hba_setup_error;
4061 if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED) {
4062 rc = lpfc_sli_hbq_setup(phba);
4064 goto lpfc_sli_hba_setup_error;
4066 spin_lock_irq(&phba->hbalock);
4067 phba->sli.sli_flag |= LPFC_PROCESS_LA;
4068 spin_unlock_irq(&phba->hbalock);
4070 rc = lpfc_config_port_post(phba);
4072 goto lpfc_sli_hba_setup_error;
4076 lpfc_sli_hba_setup_error:
4077 phba->link_state = LPFC_HBA_ERROR;
4078 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
4079 "0445 Firmware initialization failed\n");
4084 * lpfc_sli4_read_fcoe_params - Read fcoe params from conf region
4085 * @phba: Pointer to HBA context object.
4086 * @mboxq: mailbox pointer.
4087 * This function issue a dump mailbox command to read config region
4088 * 23 and parse the records in the region and populate driver
4092 lpfc_sli4_read_fcoe_params(struct lpfc_hba *phba,
4093 LPFC_MBOXQ_t *mboxq)
4095 struct lpfc_dmabuf *mp;
4096 struct lpfc_mqe *mqe;
4097 uint32_t data_length;
4100 /* Program the default value of vlan_id and fc_map */
4101 phba->valid_vlan = 0;
4102 phba->fc_map[0] = LPFC_FCOE_FCF_MAP0;
4103 phba->fc_map[1] = LPFC_FCOE_FCF_MAP1;
4104 phba->fc_map[2] = LPFC_FCOE_FCF_MAP2;
4106 mqe = &mboxq->u.mqe;
4107 if (lpfc_dump_fcoe_param(phba, mboxq))
4110 mp = (struct lpfc_dmabuf *) mboxq->context1;
4111 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
4113 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
4114 "(%d):2571 Mailbox cmd x%x Status x%x "
4115 "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x "
4116 "x%x x%x x%x x%x x%x x%x x%x x%x x%x "
4117 "CQ: x%x x%x x%x x%x\n",
4118 mboxq->vport ? mboxq->vport->vpi : 0,
4119 bf_get(lpfc_mqe_command, mqe),
4120 bf_get(lpfc_mqe_status, mqe),
4121 mqe->un.mb_words[0], mqe->un.mb_words[1],
4122 mqe->un.mb_words[2], mqe->un.mb_words[3],
4123 mqe->un.mb_words[4], mqe->un.mb_words[5],
4124 mqe->un.mb_words[6], mqe->un.mb_words[7],
4125 mqe->un.mb_words[8], mqe->un.mb_words[9],
4126 mqe->un.mb_words[10], mqe->un.mb_words[11],
4127 mqe->un.mb_words[12], mqe->un.mb_words[13],
4128 mqe->un.mb_words[14], mqe->un.mb_words[15],
4129 mqe->un.mb_words[16], mqe->un.mb_words[50],
4131 mboxq->mcqe.mcqe_tag0, mboxq->mcqe.mcqe_tag1,
4132 mboxq->mcqe.trailer);
4135 lpfc_mbuf_free(phba, mp->virt, mp->phys);
4139 data_length = mqe->un.mb_words[5];
4140 if (data_length > DMP_FCOEPARAM_RGN_SIZE)
4143 lpfc_parse_fcoe_conf(phba, mp->virt, data_length);
4144 lpfc_mbuf_free(phba, mp->virt, mp->phys);
4150 * lpfc_sli4_read_rev - Issue READ_REV and collect vpd data
4151 * @phba: pointer to lpfc hba data structure.
4152 * @mboxq: pointer to the LPFC_MBOXQ_t structure.
4153 * @vpd: pointer to the memory to hold resulting port vpd data.
4154 * @vpd_size: On input, the number of bytes allocated to @vpd.
4155 * On output, the number of data bytes in @vpd.
4157 * This routine executes a READ_REV SLI4 mailbox command. In
4158 * addition, this routine gets the port vpd data.
4162 * ENOMEM - could not allocated memory.
4165 lpfc_sli4_read_rev(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
4166 uint8_t *vpd, uint32_t *vpd_size)
4170 struct lpfc_dmabuf *dmabuf;
4171 struct lpfc_mqe *mqe;
4173 dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
4178 * Get a DMA buffer for the vpd data resulting from the READ_REV
4181 dma_size = *vpd_size;
4182 dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
4186 if (!dmabuf->virt) {
4190 memset(dmabuf->virt, 0, dma_size);
4193 * The SLI4 implementation of READ_REV conflicts at word1,
4194 * bits 31:16 and SLI4 adds vpd functionality not present
4195 * in SLI3. This code corrects the conflicts.
4197 lpfc_read_rev(phba, mboxq);
4198 mqe = &mboxq->u.mqe;
4199 mqe->un.read_rev.vpd_paddr_high = putPaddrHigh(dmabuf->phys);
4200 mqe->un.read_rev.vpd_paddr_low = putPaddrLow(dmabuf->phys);
4201 mqe->un.read_rev.word1 &= 0x0000FFFF;
4202 bf_set(lpfc_mbx_rd_rev_vpd, &mqe->un.read_rev, 1);
4203 bf_set(lpfc_mbx_rd_rev_avail_len, &mqe->un.read_rev, dma_size);
4205 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
4207 dma_free_coherent(&phba->pcidev->dev, dma_size,
4208 dmabuf->virt, dmabuf->phys);
4212 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
4213 "(%d):0380 Mailbox cmd x%x Status x%x "
4214 "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x "
4215 "x%x x%x x%x x%x x%x x%x x%x x%x x%x "
4216 "CQ: x%x x%x x%x x%x\n",
4217 mboxq->vport ? mboxq->vport->vpi : 0,
4218 bf_get(lpfc_mqe_command, mqe),
4219 bf_get(lpfc_mqe_status, mqe),
4220 mqe->un.mb_words[0], mqe->un.mb_words[1],
4221 mqe->un.mb_words[2], mqe->un.mb_words[3],
4222 mqe->un.mb_words[4], mqe->un.mb_words[5],
4223 mqe->un.mb_words[6], mqe->un.mb_words[7],
4224 mqe->un.mb_words[8], mqe->un.mb_words[9],
4225 mqe->un.mb_words[10], mqe->un.mb_words[11],
4226 mqe->un.mb_words[12], mqe->un.mb_words[13],
4227 mqe->un.mb_words[14], mqe->un.mb_words[15],
4228 mqe->un.mb_words[16], mqe->un.mb_words[50],
4230 mboxq->mcqe.mcqe_tag0, mboxq->mcqe.mcqe_tag1,
4231 mboxq->mcqe.trailer);
4234 * The available vpd length cannot be bigger than the
4235 * DMA buffer passed to the port. Catch the less than
4236 * case and update the caller's size.
4238 if (mqe->un.read_rev.avail_vpd_len < *vpd_size)
4239 *vpd_size = mqe->un.read_rev.avail_vpd_len;
4241 lpfc_sli_pcimem_bcopy(dmabuf->virt, vpd, *vpd_size);
4242 dma_free_coherent(&phba->pcidev->dev, dma_size,
4243 dmabuf->virt, dmabuf->phys);
4249 * lpfc_sli4_arm_cqeq_intr - Arm sli-4 device completion and event queues
4250 * @phba: pointer to lpfc hba data structure.
4252 * This routine is called to explicitly arm the SLI4 device's completion and
4256 lpfc_sli4_arm_cqeq_intr(struct lpfc_hba *phba)
4260 lpfc_sli4_cq_release(phba->sli4_hba.mbx_cq, LPFC_QUEUE_REARM);
4261 lpfc_sli4_cq_release(phba->sli4_hba.els_cq, LPFC_QUEUE_REARM);
4262 lpfc_sli4_cq_release(phba->sli4_hba.rxq_cq, LPFC_QUEUE_REARM);
4263 for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++)
4264 lpfc_sli4_cq_release(phba->sli4_hba.fcp_cq[fcp_eqidx],
4266 lpfc_sli4_eq_release(phba->sli4_hba.sp_eq, LPFC_QUEUE_REARM);
4267 for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++)
4268 lpfc_sli4_eq_release(phba->sli4_hba.fp_eq[fcp_eqidx],
4273 * lpfc_sli4_hba_setup - SLI4 device intialization PCI function
4274 * @phba: Pointer to HBA context object.
4276 * This function is the main SLI4 device intialization PCI function. This
4277 * function is called by the HBA intialization code, HBA reset code and
4278 * HBA error attention handler code. Caller is not required to hold any
4282 lpfc_sli4_hba_setup(struct lpfc_hba *phba)
4285 LPFC_MBOXQ_t *mboxq;
4286 struct lpfc_mqe *mqe;
4289 uint32_t ftr_rsp = 0;
4290 struct Scsi_Host *shost = lpfc_shost_from_vport(phba->pport);
4291 struct lpfc_vport *vport = phba->pport;
4292 struct lpfc_dmabuf *mp;
4294 /* Perform a PCI function reset to start from clean */
4295 rc = lpfc_pci_function_reset(phba);
4299 /* Check the HBA Host Status Register for readyness */
4300 rc = lpfc_sli4_post_status_check(phba);
4304 spin_lock_irq(&phba->hbalock);
4305 phba->sli.sli_flag |= LPFC_SLI_ACTIVE;
4306 spin_unlock_irq(&phba->hbalock);
4310 * Allocate a single mailbox container for initializing the
4313 mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
4318 * Continue initialization with default values even if driver failed
4319 * to read FCoE param config regions
4321 if (lpfc_sli4_read_fcoe_params(phba, mboxq))
4322 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_INIT,
4323 "2570 Failed to read FCoE parameters \n");
4325 /* Issue READ_REV to collect vpd and FW information. */
4326 vpd_size = PAGE_SIZE;
4327 vpd = kzalloc(vpd_size, GFP_KERNEL);
4333 rc = lpfc_sli4_read_rev(phba, mboxq, vpd, &vpd_size);
4337 mqe = &mboxq->u.mqe;
4338 if ((bf_get(lpfc_mbx_rd_rev_sli_lvl,
4339 &mqe->un.read_rev) != LPFC_SLI_REV4) ||
4340 (bf_get(lpfc_mbx_rd_rev_fcoe, &mqe->un.read_rev) == 0)) {
4341 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
4342 "0376 READ_REV Error. SLI Level %d "
4343 "FCoE enabled %d\n",
4344 bf_get(lpfc_mbx_rd_rev_sli_lvl, &mqe->un.read_rev),
4345 bf_get(lpfc_mbx_rd_rev_fcoe, &mqe->un.read_rev));
4349 /* Single threaded at this point, no need for lock */
4350 spin_lock_irq(&phba->hbalock);
4351 phba->hba_flag |= HBA_FCOE_SUPPORT;
4352 spin_unlock_irq(&phba->hbalock);
4354 * Evaluate the read rev and vpd data. Populate the driver
4355 * state with the results. If this routine fails, the failure
4356 * is not fatal as the driver will use generic values.
4358 rc = lpfc_parse_vpd(phba, vpd, vpd_size);
4359 if (unlikely(!rc)) {
4360 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
4361 "0377 Error %d parsing vpd. "
4362 "Using defaults.\n", rc);
4366 /* By now, we should determine the SLI revision, hard code for now */
4367 phba->sli_rev = LPFC_SLI_REV4;
4370 * Discover the port's supported feature set and match it against the
4373 lpfc_request_features(phba, mboxq);
4374 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
4381 * The port must support FCP initiator mode as this is the
4382 * only mode running in the host.
4384 if (!(bf_get(lpfc_mbx_rq_ftr_rsp_fcpi, &mqe->un.req_ftrs))) {
4385 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
4386 "0378 No support for fcpi mode.\n");
4391 * If the port cannot support the host's requested features
4392 * then turn off the global config parameters to disable the
4393 * feature in the driver. This is not a fatal error.
4395 if ((phba->cfg_enable_bg) &&
4396 !(bf_get(lpfc_mbx_rq_ftr_rsp_dif, &mqe->un.req_ftrs)))
4399 if (phba->max_vpi && phba->cfg_enable_npiv &&
4400 !(bf_get(lpfc_mbx_rq_ftr_rsp_npiv, &mqe->un.req_ftrs)))
4404 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
4405 "0379 Feature Mismatch Data: x%08x %08x "
4406 "x%x x%x x%x\n", mqe->un.req_ftrs.word2,
4407 mqe->un.req_ftrs.word3, phba->cfg_enable_bg,
4408 phba->cfg_enable_npiv, phba->max_vpi);
4409 if (!(bf_get(lpfc_mbx_rq_ftr_rsp_dif, &mqe->un.req_ftrs)))
4410 phba->cfg_enable_bg = 0;
4411 if (!(bf_get(lpfc_mbx_rq_ftr_rsp_npiv, &mqe->un.req_ftrs)))
4412 phba->cfg_enable_npiv = 0;
4415 /* These SLI3 features are assumed in SLI4 */
4416 spin_lock_irq(&phba->hbalock);
4417 phba->sli3_options |= (LPFC_SLI3_NPIV_ENABLED | LPFC_SLI3_HBQ_ENABLED);
4418 spin_unlock_irq(&phba->hbalock);
4420 /* Read the port's service parameters. */
4421 lpfc_read_sparam(phba, mboxq, vport->vpi);
4422 mboxq->vport = vport;
4423 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
4424 mp = (struct lpfc_dmabuf *) mboxq->context1;
4425 if (rc == MBX_SUCCESS) {
4426 memcpy(&vport->fc_sparam, mp->virt, sizeof(struct serv_parm));
4431 * This memory was allocated by the lpfc_read_sparam routine. Release
4432 * it to the mbuf pool.
4434 lpfc_mbuf_free(phba, mp->virt, mp->phys);
4436 mboxq->context1 = NULL;
4438 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
4439 "0382 READ_SPARAM command failed "
4440 "status %d, mbxStatus x%x\n",
4441 rc, bf_get(lpfc_mqe_status, mqe));
4442 phba->link_state = LPFC_HBA_ERROR;
4447 if (phba->cfg_soft_wwnn)
4448 u64_to_wwn(phba->cfg_soft_wwnn,
4449 vport->fc_sparam.nodeName.u.wwn);
4450 if (phba->cfg_soft_wwpn)
4451 u64_to_wwn(phba->cfg_soft_wwpn,
4452 vport->fc_sparam.portName.u.wwn);
4453 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
4454 sizeof(struct lpfc_name));
4455 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
4456 sizeof(struct lpfc_name));
4458 /* Update the fc_host data structures with new wwn. */
4459 fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
4460 fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
4462 /* Register SGL pool to the device using non-embedded mailbox command */
4463 rc = lpfc_sli4_post_sgl_list(phba);
4465 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
4466 "0582 Error %d during sgl post operation", rc);
4471 /* Register SCSI SGL pool to the device */
4472 rc = lpfc_sli4_repost_scsi_sgl_list(phba);
4474 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX | LOG_SLI,
4475 "0383 Error %d during scsi sgl post opeation",
4477 /* Some Scsi buffers were moved to the abort scsi list */
4478 /* A pci function reset will repost them */
4483 /* Post the rpi header region to the device. */
4484 rc = lpfc_sli4_post_all_rpi_hdrs(phba);
4486 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
4487 "0393 Error %d during rpi post operation\n",
4492 /* Temporary initialization of lpfc_fip_flag to non-fip */
4493 bf_set(lpfc_fip_flag, &phba->sli4_hba.sli4_flags, 0);
4495 /* Set up all the queues to the device */
4496 rc = lpfc_sli4_queue_setup(phba);
4498 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
4499 "0381 Error %d during queue setup.\n ", rc);
4500 goto out_stop_timers;
4503 /* Arm the CQs and then EQs on device */
4504 lpfc_sli4_arm_cqeq_intr(phba);
4506 /* Indicate device interrupt mode */
4507 phba->sli4_hba.intr_enable = 1;
4509 /* Allow asynchronous mailbox command to go through */
4510 spin_lock_irq(&phba->hbalock);
4511 phba->sli.sli_flag &= ~LPFC_SLI_ASYNC_MBX_BLK;
4512 spin_unlock_irq(&phba->hbalock);
4514 /* Post receive buffers to the device */
4515 lpfc_sli4_rb_setup(phba);
4517 /* Start the ELS watchdog timer */
4519 * The driver for SLI4 is not yet ready to process timeouts
4520 * or interrupts. Once it is, the comment bars can be removed.
4522 /* mod_timer(&vport->els_tmofunc,
4523 * jiffies + HZ * (phba->fc_ratov*2)); */
4525 /* Start heart beat timer */
4526 mod_timer(&phba->hb_tmofunc,
4527 jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
4528 phba->hb_outstanding = 0;
4529 phba->last_completion_time = jiffies;
4531 /* Start error attention (ERATT) polling timer */
4532 mod_timer(&phba->eratt_poll, jiffies + HZ * LPFC_ERATT_POLL_INTERVAL);
4535 * The port is ready, set the host's link state to LINK_DOWN
4536 * in preparation for link interrupts.
4538 lpfc_init_link(phba, mboxq, phba->cfg_topology, phba->cfg_link_speed);
4539 mboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
4540 lpfc_set_loopback_flag(phba);
4541 /* Change driver state to LPFC_LINK_DOWN right before init link */
4542 spin_lock_irq(&phba->hbalock);
4543 phba->link_state = LPFC_LINK_DOWN;
4544 spin_unlock_irq(&phba->hbalock);
4545 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_NOWAIT);
4546 if (unlikely(rc != MBX_NOT_FINISHED)) {
4552 /* Unset all the queues set up in this routine when error out */
4554 lpfc_sli4_queue_unset(phba);
4558 lpfc_stop_hba_timers(phba);
4562 mempool_free(mboxq, phba->mbox_mem_pool);
4567 * lpfc_mbox_timeout - Timeout call back function for mbox timer
4568 * @ptr: context object - pointer to hba structure.
4570 * This is the callback function for mailbox timer. The mailbox
4571 * timer is armed when a new mailbox command is issued and the timer
4572 * is deleted when the mailbox complete. The function is called by
4573 * the kernel timer code when a mailbox does not complete within
4574 * expected time. This function wakes up the worker thread to
4575 * process the mailbox timeout and returns. All the processing is
4576 * done by the worker thread function lpfc_mbox_timeout_handler.
4579 lpfc_mbox_timeout(unsigned long ptr)
4581 struct lpfc_hba *phba = (struct lpfc_hba *) ptr;
4582 unsigned long iflag;
4583 uint32_t tmo_posted;
4585 spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
4586 tmo_posted = phba->pport->work_port_events & WORKER_MBOX_TMO;
4588 phba->pport->work_port_events |= WORKER_MBOX_TMO;
4589 spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
4592 lpfc_worker_wake_up(phba);
4598 * lpfc_mbox_timeout_handler - Worker thread function to handle mailbox timeout
4599 * @phba: Pointer to HBA context object.
4601 * This function is called from worker thread when a mailbox command times out.
4602 * The caller is not required to hold any locks. This function will reset the
4603 * HBA and recover all the pending commands.
4606 lpfc_mbox_timeout_handler(struct lpfc_hba *phba)
4608 LPFC_MBOXQ_t *pmbox = phba->sli.mbox_active;
4609 MAILBOX_t *mb = &pmbox->u.mb;
4610 struct lpfc_sli *psli = &phba->sli;
4611 struct lpfc_sli_ring *pring;
4613 /* Check the pmbox pointer first. There is a race condition
4614 * between the mbox timeout handler getting executed in the
4615 * worklist and the mailbox actually completing. When this
4616 * race condition occurs, the mbox_active will be NULL.
4618 spin_lock_irq(&phba->hbalock);
4619 if (pmbox == NULL) {
4620 lpfc_printf_log(phba, KERN_WARNING,
4622 "0353 Active Mailbox cleared - mailbox timeout "
4624 spin_unlock_irq(&phba->hbalock);
4628 /* Mbox cmd <mbxCommand> timeout */
4629 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
4630 "0310 Mailbox command x%x timeout Data: x%x x%x x%p\n",
4632 phba->pport->port_state,
4634 phba->sli.mbox_active);
4635 spin_unlock_irq(&phba->hbalock);
4637 /* Setting state unknown so lpfc_sli_abort_iocb_ring
4638 * would get IOCB_ERROR from lpfc_sli_issue_iocb, allowing
4639 * it to fail all oustanding SCSI IO.
4641 spin_lock_irq(&phba->pport->work_port_lock);
4642 phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
4643 spin_unlock_irq(&phba->pport->work_port_lock);
4644 spin_lock_irq(&phba->hbalock);
4645 phba->link_state = LPFC_LINK_UNKNOWN;
4646 psli->sli_flag &= ~LPFC_SLI2_ACTIVE;
4647 spin_unlock_irq(&phba->hbalock);
4649 pring = &psli->ring[psli->fcp_ring];
4650 lpfc_sli_abort_iocb_ring(phba, pring);
4652 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
4653 "0345 Resetting board due to mailbox timeout\n");
4655 /* Reset the HBA device */
4656 lpfc_reset_hba(phba);
4660 * lpfc_sli_issue_mbox_s3 - Issue an SLI3 mailbox command to firmware
4661 * @phba: Pointer to HBA context object.
4662 * @pmbox: Pointer to mailbox object.
4663 * @flag: Flag indicating how the mailbox need to be processed.
4665 * This function is called by discovery code and HBA management code
4666 * to submit a mailbox command to firmware with SLI-3 interface spec. This
4667 * function gets the hbalock to protect the data structures.
4668 * The mailbox command can be submitted in polling mode, in which case
4669 * this function will wait in a polling loop for the completion of the
4671 * If the mailbox is submitted in no_wait mode (not polling) the
4672 * function will submit the command and returns immediately without waiting
4673 * for the mailbox completion. The no_wait is supported only when HBA
4674 * is in SLI2/SLI3 mode - interrupts are enabled.
4675 * The SLI interface allows only one mailbox pending at a time. If the
4676 * mailbox is issued in polling mode and there is already a mailbox
4677 * pending, then the function will return an error. If the mailbox is issued
4678 * in NO_WAIT mode and there is a mailbox pending already, the function
4679 * will return MBX_BUSY after queuing the mailbox into mailbox queue.
4680 * The sli layer owns the mailbox object until the completion of mailbox
4681 * command if this function return MBX_BUSY or MBX_SUCCESS. For all other
4682 * return codes the caller owns the mailbox command after the return of
4686 lpfc_sli_issue_mbox_s3(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox,
4690 struct lpfc_sli *psli = &phba->sli;
4691 uint32_t status, evtctr;
4694 unsigned long timeout;
4695 unsigned long drvr_flag = 0;
4696 uint32_t word0, ldata;
4697 void __iomem *to_slim;
4698 int processing_queue = 0;
4700 spin_lock_irqsave(&phba->hbalock, drvr_flag);
4702 /* processing mbox queue from intr_handler */
4703 if (unlikely(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) {
4704 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
4707 processing_queue = 1;
4708 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
4709 pmbox = lpfc_mbox_get(phba);
4711 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
4716 if (pmbox->mbox_cmpl && pmbox->mbox_cmpl != lpfc_sli_def_mbox_cmpl &&
4717 pmbox->mbox_cmpl != lpfc_sli_wake_mbox_wait) {
4719 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
4720 lpfc_printf_log(phba, KERN_ERR,
4721 LOG_MBOX | LOG_VPORT,
4722 "1806 Mbox x%x failed. No vport\n",
4723 pmbox->u.mb.mbxCommand);
4725 goto out_not_finished;
4729 /* If the PCI channel is in offline state, do not post mbox. */
4730 if (unlikely(pci_channel_offline(phba->pcidev))) {
4731 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
4732 goto out_not_finished;
4735 /* If HBA has a deferred error attention, fail the iocb. */
4736 if (unlikely(phba->hba_flag & DEFER_ERATT)) {
4737 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
4738 goto out_not_finished;
4744 status = MBX_SUCCESS;
4746 if (phba->link_state == LPFC_HBA_ERROR) {
4747 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
4749 /* Mbox command <mbxCommand> cannot issue */
4750 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
4751 "(%d):0311 Mailbox command x%x cannot "
4752 "issue Data: x%x x%x\n",
4753 pmbox->vport ? pmbox->vport->vpi : 0,
4754 pmbox->u.mb.mbxCommand, psli->sli_flag, flag);
4755 goto out_not_finished;
4758 if (mb->mbxCommand != MBX_KILL_BOARD && flag & MBX_NOWAIT &&
4759 !(readl(phba->HCregaddr) & HC_MBINT_ENA)) {
4760 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
4761 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
4762 "(%d):2528 Mailbox command x%x cannot "
4763 "issue Data: x%x x%x\n",
4764 pmbox->vport ? pmbox->vport->vpi : 0,
4765 pmbox->u.mb.mbxCommand, psli->sli_flag, flag);
4766 goto out_not_finished;
4769 if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
4770 /* Polling for a mbox command when another one is already active
4771 * is not allowed in SLI. Also, the driver must have established
4772 * SLI2 mode to queue and process multiple mbox commands.
4775 if (flag & MBX_POLL) {
4776 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
4778 /* Mbox command <mbxCommand> cannot issue */
4779 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
4780 "(%d):2529 Mailbox command x%x "
4781 "cannot issue Data: x%x x%x\n",
4782 pmbox->vport ? pmbox->vport->vpi : 0,
4783 pmbox->u.mb.mbxCommand,
4784 psli->sli_flag, flag);
4785 goto out_not_finished;
4788 if (!(psli->sli_flag & LPFC_SLI_ACTIVE)) {
4789 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
4790 /* Mbox command <mbxCommand> cannot issue */
4791 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
4792 "(%d):2530 Mailbox command x%x "
4793 "cannot issue Data: x%x x%x\n",
4794 pmbox->vport ? pmbox->vport->vpi : 0,
4795 pmbox->u.mb.mbxCommand,
4796 psli->sli_flag, flag);
4797 goto out_not_finished;
4800 /* Another mailbox command is still being processed, queue this
4801 * command to be processed later.
4803 lpfc_mbox_put(phba, pmbox);
4805 /* Mbox cmd issue - BUSY */
4806 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
4807 "(%d):0308 Mbox cmd issue - BUSY Data: "
4808 "x%x x%x x%x x%x\n",
4809 pmbox->vport ? pmbox->vport->vpi : 0xffffff,
4810 mb->mbxCommand, phba->pport->port_state,
4811 psli->sli_flag, flag);
4813 psli->slistat.mbox_busy++;
4814 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
4817 lpfc_debugfs_disc_trc(pmbox->vport,
4818 LPFC_DISC_TRC_MBOX_VPORT,
4819 "MBOX Bsy vport: cmd:x%x mb:x%x x%x",
4820 (uint32_t)mb->mbxCommand,
4821 mb->un.varWords[0], mb->un.varWords[1]);
4824 lpfc_debugfs_disc_trc(phba->pport,
4826 "MBOX Bsy: cmd:x%x mb:x%x x%x",
4827 (uint32_t)mb->mbxCommand,
4828 mb->un.varWords[0], mb->un.varWords[1]);
4834 psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
4836 /* If we are not polling, we MUST be in SLI2 mode */
4837 if (flag != MBX_POLL) {
4838 if (!(psli->sli_flag & LPFC_SLI_ACTIVE) &&
4839 (mb->mbxCommand != MBX_KILL_BOARD)) {
4840 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
4841 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
4842 /* Mbox command <mbxCommand> cannot issue */
4843 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
4844 "(%d):2531 Mailbox command x%x "
4845 "cannot issue Data: x%x x%x\n",
4846 pmbox->vport ? pmbox->vport->vpi : 0,
4847 pmbox->u.mb.mbxCommand,
4848 psli->sli_flag, flag);
4849 goto out_not_finished;
4851 /* timeout active mbox command */
4852 mod_timer(&psli->mbox_tmo, (jiffies +
4853 (HZ * lpfc_mbox_tmo_val(phba, mb->mbxCommand))));
4856 /* Mailbox cmd <cmd> issue */
4857 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
4858 "(%d):0309 Mailbox cmd x%x issue Data: x%x x%x "
4860 pmbox->vport ? pmbox->vport->vpi : 0,
4861 mb->mbxCommand, phba->pport->port_state,
4862 psli->sli_flag, flag);
4864 if (mb->mbxCommand != MBX_HEARTBEAT) {
4866 lpfc_debugfs_disc_trc(pmbox->vport,
4867 LPFC_DISC_TRC_MBOX_VPORT,
4868 "MBOX Send vport: cmd:x%x mb:x%x x%x",
4869 (uint32_t)mb->mbxCommand,
4870 mb->un.varWords[0], mb->un.varWords[1]);
4873 lpfc_debugfs_disc_trc(phba->pport,
4875 "MBOX Send: cmd:x%x mb:x%x x%x",
4876 (uint32_t)mb->mbxCommand,
4877 mb->un.varWords[0], mb->un.varWords[1]);
4881 psli->slistat.mbox_cmd++;
4882 evtctr = psli->slistat.mbox_event;
4884 /* next set own bit for the adapter and copy over command word */
4885 mb->mbxOwner = OWN_CHIP;
4887 if (psli->sli_flag & LPFC_SLI_ACTIVE) {
4888 /* First copy command data to host SLIM area */
4889 lpfc_sli_pcimem_bcopy(mb, phba->mbox, MAILBOX_CMD_SIZE);
4891 if (mb->mbxCommand == MBX_CONFIG_PORT) {
4892 /* copy command data into host mbox for cmpl */
4893 lpfc_sli_pcimem_bcopy(mb, phba->mbox, MAILBOX_CMD_SIZE);
4896 /* First copy mbox command data to HBA SLIM, skip past first
4898 to_slim = phba->MBslimaddr + sizeof (uint32_t);
4899 lpfc_memcpy_to_slim(to_slim, &mb->un.varWords[0],
4900 MAILBOX_CMD_SIZE - sizeof (uint32_t));
4902 /* Next copy over first word, with mbxOwner set */
4903 ldata = *((uint32_t *)mb);
4904 to_slim = phba->MBslimaddr;
4905 writel(ldata, to_slim);
4906 readl(to_slim); /* flush */
4908 if (mb->mbxCommand == MBX_CONFIG_PORT) {
4909 /* switch over to host mailbox */
4910 psli->sli_flag |= LPFC_SLI_ACTIVE;
4918 /* Set up reference to mailbox command */
4919 psli->mbox_active = pmbox;
4920 /* Interrupt board to do it */
4921 writel(CA_MBATT, phba->CAregaddr);
4922 readl(phba->CAregaddr); /* flush */
4923 /* Don't wait for it to finish, just return */
4927 /* Set up null reference to mailbox command */
4928 psli->mbox_active = NULL;
4929 /* Interrupt board to do it */
4930 writel(CA_MBATT, phba->CAregaddr);
4931 readl(phba->CAregaddr); /* flush */
4933 if (psli->sli_flag & LPFC_SLI_ACTIVE) {
4934 /* First read mbox status word */
4935 word0 = *((uint32_t *)phba->mbox);
4936 word0 = le32_to_cpu(word0);
4938 /* First read mbox status word */
4939 word0 = readl(phba->MBslimaddr);
4942 /* Read the HBA Host Attention Register */
4943 ha_copy = readl(phba->HAregaddr);
4944 timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba,
4948 /* Wait for command to complete */
4949 while (((word0 & OWN_CHIP) == OWN_CHIP) ||
4950 (!(ha_copy & HA_MBATT) &&
4951 (phba->link_state > LPFC_WARM_START))) {
4952 if (time_after(jiffies, timeout)) {
4953 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
4954 spin_unlock_irqrestore(&phba->hbalock,
4956 goto out_not_finished;
4959 /* Check if we took a mbox interrupt while we were
4961 if (((word0 & OWN_CHIP) != OWN_CHIP)
4962 && (evtctr != psli->slistat.mbox_event))
4966 spin_unlock_irqrestore(&phba->hbalock,
4969 spin_lock_irqsave(&phba->hbalock, drvr_flag);
4972 if (psli->sli_flag & LPFC_SLI_ACTIVE) {
4973 /* First copy command data */
4974 word0 = *((uint32_t *)phba->mbox);
4975 word0 = le32_to_cpu(word0);
4976 if (mb->mbxCommand == MBX_CONFIG_PORT) {
4979 /* Check real SLIM for any errors */
4980 slimword0 = readl(phba->MBslimaddr);
4981 slimmb = (MAILBOX_t *) & slimword0;
4982 if (((slimword0 & OWN_CHIP) != OWN_CHIP)
4983 && slimmb->mbxStatus) {
4990 /* First copy command data */
4991 word0 = readl(phba->MBslimaddr);
4993 /* Read the HBA Host Attention Register */
4994 ha_copy = readl(phba->HAregaddr);
4997 if (psli->sli_flag & LPFC_SLI_ACTIVE) {
4998 /* copy results back to user */
4999 lpfc_sli_pcimem_bcopy(phba->mbox, mb, MAILBOX_CMD_SIZE);
5001 /* First copy command data */
5002 lpfc_memcpy_from_slim(mb, phba->MBslimaddr,
5004 if ((mb->mbxCommand == MBX_DUMP_MEMORY) &&
5006 lpfc_memcpy_from_slim((void *)pmbox->context2,
5007 phba->MBslimaddr + DMP_RSP_OFFSET,
5008 mb->un.varDmp.word_cnt);
5012 writel(HA_MBATT, phba->HAregaddr);
5013 readl(phba->HAregaddr); /* flush */
5015 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
5016 status = mb->mbxStatus;
5019 spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
5023 if (processing_queue) {
5024 pmbox->u.mb.mbxStatus = MBX_NOT_FINISHED;
5025 lpfc_mbox_cmpl_put(phba, pmbox);
5027 return MBX_NOT_FINISHED;
5031 * lpfc_sli4_post_sync_mbox - Post an SLI4 mailbox to the bootstrap mailbox
5032 * @phba: Pointer to HBA context object.
5033 * @mboxq: Pointer to mailbox object.
5035 * The function posts a mailbox to the port. The mailbox is expected
5036 * to be comletely filled in and ready for the port to operate on it.
5037 * This routine executes a synchronous completion operation on the
5038 * mailbox by polling for its completion.
5040 * The caller must not be holding any locks when calling this routine.
5043 * MBX_SUCCESS - mailbox posted successfully
5044 * Any of the MBX error values.
5047 lpfc_sli4_post_sync_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
5049 int rc = MBX_SUCCESS;
5050 unsigned long iflag;
5052 uint32_t mcqe_status;
5054 unsigned long timeout;
5055 struct lpfc_sli *psli = &phba->sli;
5056 struct lpfc_mqe *mb = &mboxq->u.mqe;
5057 struct lpfc_bmbx_create *mbox_rgn;
5058 struct dma_address *dma_address;
5059 struct lpfc_register bmbx_reg;
5062 * Only one mailbox can be active to the bootstrap mailbox region
5063 * at a time and there is no queueing provided.
5065 spin_lock_irqsave(&phba->hbalock, iflag);
5066 if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
5067 spin_unlock_irqrestore(&phba->hbalock, iflag);
5068 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
5069 "(%d):2532 Mailbox command x%x (x%x) "
5070 "cannot issue Data: x%x x%x\n",
5071 mboxq->vport ? mboxq->vport->vpi : 0,
5072 mboxq->u.mb.mbxCommand,
5073 lpfc_sli4_mbox_opcode_get(phba, mboxq),
5074 psli->sli_flag, MBX_POLL);
5075 return MBXERR_ERROR;
5077 /* The server grabs the token and owns it until release */
5078 psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
5079 phba->sli.mbox_active = mboxq;
5080 spin_unlock_irqrestore(&phba->hbalock, iflag);
5083 * Initialize the bootstrap memory region to avoid stale data areas
5084 * in the mailbox post. Then copy the caller's mailbox contents to
5085 * the bmbx mailbox region.
5087 mbx_cmnd = bf_get(lpfc_mqe_command, mb);
5088 memset(phba->sli4_hba.bmbx.avirt, 0, sizeof(struct lpfc_bmbx_create));
5089 lpfc_sli_pcimem_bcopy(mb, phba->sli4_hba.bmbx.avirt,
5090 sizeof(struct lpfc_mqe));
5092 /* Post the high mailbox dma address to the port and wait for ready. */
5093 dma_address = &phba->sli4_hba.bmbx.dma_address;
5094 writel(dma_address->addr_hi, phba->sli4_hba.BMBXregaddr);
5096 timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, mbx_cmnd)
5099 bmbx_reg.word0 = readl(phba->sli4_hba.BMBXregaddr);
5100 db_ready = bf_get(lpfc_bmbx_rdy, &bmbx_reg);
5104 if (time_after(jiffies, timeout)) {
5108 } while (!db_ready);
5110 /* Post the low mailbox dma address to the port. */
5111 writel(dma_address->addr_lo, phba->sli4_hba.BMBXregaddr);
5112 timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, mbx_cmnd)
5115 bmbx_reg.word0 = readl(phba->sli4_hba.BMBXregaddr);
5116 db_ready = bf_get(lpfc_bmbx_rdy, &bmbx_reg);
5120 if (time_after(jiffies, timeout)) {
5124 } while (!db_ready);
5127 * Read the CQ to ensure the mailbox has completed.
5128 * If so, update the mailbox status so that the upper layers
5129 * can complete the request normally.
5131 lpfc_sli_pcimem_bcopy(phba->sli4_hba.bmbx.avirt, mb,
5132 sizeof(struct lpfc_mqe));
5133 mbox_rgn = (struct lpfc_bmbx_create *) phba->sli4_hba.bmbx.avirt;
5134 lpfc_sli_pcimem_bcopy(&mbox_rgn->mcqe, &mboxq->mcqe,
5135 sizeof(struct lpfc_mcqe));
5136 mcqe_status = bf_get(lpfc_mcqe_status, &mbox_rgn->mcqe);
5138 /* Prefix the mailbox status with range x4000 to note SLI4 status. */
5139 if (mcqe_status != MB_CQE_STATUS_SUCCESS) {
5140 bf_set(lpfc_mqe_status, mb, LPFC_MBX_ERROR_RANGE | mcqe_status);
5144 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
5145 "(%d):0356 Mailbox cmd x%x (x%x) Status x%x "
5146 "Data: x%x x%x x%x x%x x%x x%x x%x x%x x%x x%x x%x"
5147 " x%x x%x CQ: x%x x%x x%x x%x\n",
5148 mboxq->vport ? mboxq->vport->vpi : 0,
5149 mbx_cmnd, lpfc_sli4_mbox_opcode_get(phba, mboxq),
5150 bf_get(lpfc_mqe_status, mb),
5151 mb->un.mb_words[0], mb->un.mb_words[1],
5152 mb->un.mb_words[2], mb->un.mb_words[3],
5153 mb->un.mb_words[4], mb->un.mb_words[5],
5154 mb->un.mb_words[6], mb->un.mb_words[7],
5155 mb->un.mb_words[8], mb->un.mb_words[9],
5156 mb->un.mb_words[10], mb->un.mb_words[11],
5157 mb->un.mb_words[12], mboxq->mcqe.word0,
5158 mboxq->mcqe.mcqe_tag0, mboxq->mcqe.mcqe_tag1,
5159 mboxq->mcqe.trailer);
5161 /* We are holding the token, no needed for lock when release */
5162 spin_lock_irqsave(&phba->hbalock, iflag);
5163 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
5164 phba->sli.mbox_active = NULL;
5165 spin_unlock_irqrestore(&phba->hbalock, iflag);
5170 * lpfc_sli_issue_mbox_s4 - Issue an SLI4 mailbox command to firmware
5171 * @phba: Pointer to HBA context object.
5172 * @pmbox: Pointer to mailbox object.
5173 * @flag: Flag indicating how the mailbox need to be processed.
5175 * This function is called by discovery code and HBA management code to submit
5176 * a mailbox command to firmware with SLI-4 interface spec.
5178 * Return codes the caller owns the mailbox command after the return of the
5182 lpfc_sli_issue_mbox_s4(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq,
5185 struct lpfc_sli *psli = &phba->sli;
5186 unsigned long iflags;
5189 /* Detect polling mode and jump to a handler */
5190 if (!phba->sli4_hba.intr_enable) {
5191 if (flag == MBX_POLL)
5192 rc = lpfc_sli4_post_sync_mbox(phba, mboxq);
5195 if (rc != MBX_SUCCESS)
5196 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
5197 "(%d):2541 Mailbox command x%x "
5198 "(x%x) cannot issue Data: x%x x%x\n",
5199 mboxq->vport ? mboxq->vport->vpi : 0,
5200 mboxq->u.mb.mbxCommand,
5201 lpfc_sli4_mbox_opcode_get(phba, mboxq),
5202 psli->sli_flag, flag);
5204 } else if (flag == MBX_POLL) {
5205 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
5206 "(%d):2542 Mailbox command x%x (x%x) "
5207 "cannot issue Data: x%x x%x\n",
5208 mboxq->vport ? mboxq->vport->vpi : 0,
5209 mboxq->u.mb.mbxCommand,
5210 lpfc_sli4_mbox_opcode_get(phba, mboxq),
5211 psli->sli_flag, flag);
5215 /* Now, interrupt mode asynchrous mailbox command */
5216 rc = lpfc_mbox_cmd_check(phba, mboxq);
5218 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
5219 "(%d):2543 Mailbox command x%x (x%x) "
5220 "cannot issue Data: x%x x%x\n",
5221 mboxq->vport ? mboxq->vport->vpi : 0,
5222 mboxq->u.mb.mbxCommand,
5223 lpfc_sli4_mbox_opcode_get(phba, mboxq),
5224 psli->sli_flag, flag);
5225 goto out_not_finished;
5227 rc = lpfc_mbox_dev_check(phba);
5229 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
5230 "(%d):2544 Mailbox command x%x (x%x) "
5231 "cannot issue Data: x%x x%x\n",
5232 mboxq->vport ? mboxq->vport->vpi : 0,
5233 mboxq->u.mb.mbxCommand,
5234 lpfc_sli4_mbox_opcode_get(phba, mboxq),
5235 psli->sli_flag, flag);
5236 goto out_not_finished;
5239 /* Put the mailbox command to the driver internal FIFO */
5240 psli->slistat.mbox_busy++;
5241 spin_lock_irqsave(&phba->hbalock, iflags);
5242 lpfc_mbox_put(phba, mboxq);
5243 spin_unlock_irqrestore(&phba->hbalock, iflags);
5244 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
5245 "(%d):0354 Mbox cmd issue - Enqueue Data: "
5246 "x%x (x%x) x%x x%x x%x\n",
5247 mboxq->vport ? mboxq->vport->vpi : 0xffffff,
5248 bf_get(lpfc_mqe_command, &mboxq->u.mqe),
5249 lpfc_sli4_mbox_opcode_get(phba, mboxq),
5250 phba->pport->port_state,
5251 psli->sli_flag, MBX_NOWAIT);
5252 /* Wake up worker thread to transport mailbox command from head */
5253 lpfc_worker_wake_up(phba);
5258 return MBX_NOT_FINISHED;
5262 * lpfc_sli4_post_async_mbox - Post an SLI4 mailbox command to device
5263 * @phba: Pointer to HBA context object.
5265 * This function is called by worker thread to send a mailbox command to
5266 * SLI4 HBA firmware.
5270 lpfc_sli4_post_async_mbox(struct lpfc_hba *phba)
5272 struct lpfc_sli *psli = &phba->sli;
5273 LPFC_MBOXQ_t *mboxq;
5274 int rc = MBX_SUCCESS;
5275 unsigned long iflags;
5276 struct lpfc_mqe *mqe;
5279 /* Check interrupt mode before post async mailbox command */
5280 if (unlikely(!phba->sli4_hba.intr_enable))
5281 return MBX_NOT_FINISHED;
5283 /* Check for mailbox command service token */
5284 spin_lock_irqsave(&phba->hbalock, iflags);
5285 if (unlikely(psli->sli_flag & LPFC_SLI_ASYNC_MBX_BLK)) {
5286 spin_unlock_irqrestore(&phba->hbalock, iflags);
5287 return MBX_NOT_FINISHED;
5289 if (psli->sli_flag & LPFC_SLI_MBOX_ACTIVE) {
5290 spin_unlock_irqrestore(&phba->hbalock, iflags);
5291 return MBX_NOT_FINISHED;
5293 if (unlikely(phba->sli.mbox_active)) {
5294 spin_unlock_irqrestore(&phba->hbalock, iflags);
5295 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
5296 "0384 There is pending active mailbox cmd\n");
5297 return MBX_NOT_FINISHED;
5299 /* Take the mailbox command service token */
5300 psli->sli_flag |= LPFC_SLI_MBOX_ACTIVE;
5302 /* Get the next mailbox command from head of queue */
5303 mboxq = lpfc_mbox_get(phba);
5305 /* If no more mailbox command waiting for post, we're done */
5307 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
5308 spin_unlock_irqrestore(&phba->hbalock, iflags);
5311 phba->sli.mbox_active = mboxq;
5312 spin_unlock_irqrestore(&phba->hbalock, iflags);
5314 /* Check device readiness for posting mailbox command */
5315 rc = lpfc_mbox_dev_check(phba);
5317 /* Driver clean routine will clean up pending mailbox */
5318 goto out_not_finished;
5320 /* Prepare the mbox command to be posted */
5321 mqe = &mboxq->u.mqe;
5322 mbx_cmnd = bf_get(lpfc_mqe_command, mqe);
5324 /* Start timer for the mbox_tmo and log some mailbox post messages */
5325 mod_timer(&psli->mbox_tmo, (jiffies +
5326 (HZ * lpfc_mbox_tmo_val(phba, mbx_cmnd))));
5328 lpfc_printf_log(phba, KERN_INFO, LOG_MBOX | LOG_SLI,
5329 "(%d):0355 Mailbox cmd x%x (x%x) issue Data: "
5331 mboxq->vport ? mboxq->vport->vpi : 0, mbx_cmnd,
5332 lpfc_sli4_mbox_opcode_get(phba, mboxq),
5333 phba->pport->port_state, psli->sli_flag);
5335 if (mbx_cmnd != MBX_HEARTBEAT) {
5337 lpfc_debugfs_disc_trc(mboxq->vport,
5338 LPFC_DISC_TRC_MBOX_VPORT,
5339 "MBOX Send vport: cmd:x%x mb:x%x x%x",
5340 mbx_cmnd, mqe->un.mb_words[0],
5341 mqe->un.mb_words[1]);
5343 lpfc_debugfs_disc_trc(phba->pport,
5345 "MBOX Send: cmd:x%x mb:x%x x%x",
5346 mbx_cmnd, mqe->un.mb_words[0],
5347 mqe->un.mb_words[1]);
5350 psli->slistat.mbox_cmd++;
5352 /* Post the mailbox command to the port */
5353 rc = lpfc_sli4_mq_put(phba->sli4_hba.mbx_wq, mqe);
5354 if (rc != MBX_SUCCESS) {
5355 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
5356 "(%d):2533 Mailbox command x%x (x%x) "
5357 "cannot issue Data: x%x x%x\n",
5358 mboxq->vport ? mboxq->vport->vpi : 0,
5359 mboxq->u.mb.mbxCommand,
5360 lpfc_sli4_mbox_opcode_get(phba, mboxq),
5361 psli->sli_flag, MBX_NOWAIT);
5362 goto out_not_finished;
5368 spin_lock_irqsave(&phba->hbalock, iflags);
5369 mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED;
5370 __lpfc_mbox_cmpl_put(phba, mboxq);
5371 /* Release the token */
5372 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
5373 phba->sli.mbox_active = NULL;
5374 spin_unlock_irqrestore(&phba->hbalock, iflags);
5376 return MBX_NOT_FINISHED;
5380 * lpfc_sli_issue_mbox - Wrapper func for issuing mailbox command
5381 * @phba: Pointer to HBA context object.
5382 * @pmbox: Pointer to mailbox object.
5383 * @flag: Flag indicating how the mailbox need to be processed.
5385 * This routine wraps the actual SLI3 or SLI4 mailbox issuing routine from
5386 * the API jump table function pointer from the lpfc_hba struct.
5388 * Return codes the caller owns the mailbox command after the return of the
5392 lpfc_sli_issue_mbox(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmbox, uint32_t flag)
5394 return phba->lpfc_sli_issue_mbox(phba, pmbox, flag);
5398 * lpfc_mbox_api_table_setup - Set up mbox api fucntion jump table
5399 * @phba: The hba struct for which this call is being executed.
5400 * @dev_grp: The HBA PCI-Device group number.
5402 * This routine sets up the mbox interface API function jump table in @phba
5404 * Returns: 0 - success, -ENODEV - failure.
5407 lpfc_mbox_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
5411 case LPFC_PCI_DEV_LP:
5412 phba->lpfc_sli_issue_mbox = lpfc_sli_issue_mbox_s3;
5413 phba->lpfc_sli_handle_slow_ring_event =
5414 lpfc_sli_handle_slow_ring_event_s3;
5415 phba->lpfc_sli_hbq_to_firmware = lpfc_sli_hbq_to_firmware_s3;
5416 phba->lpfc_sli_brdrestart = lpfc_sli_brdrestart_s3;
5417 phba->lpfc_sli_brdready = lpfc_sli_brdready_s3;
5419 case LPFC_PCI_DEV_OC:
5420 phba->lpfc_sli_issue_mbox = lpfc_sli_issue_mbox_s4;
5421 phba->lpfc_sli_handle_slow_ring_event =
5422 lpfc_sli_handle_slow_ring_event_s4;
5423 phba->lpfc_sli_hbq_to_firmware = lpfc_sli_hbq_to_firmware_s4;
5424 phba->lpfc_sli_brdrestart = lpfc_sli_brdrestart_s4;
5425 phba->lpfc_sli_brdready = lpfc_sli_brdready_s4;
5428 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5429 "1420 Invalid HBA PCI-device group: 0x%x\n",
5438 * __lpfc_sli_ringtx_put - Add an iocb to the txq
5439 * @phba: Pointer to HBA context object.
5440 * @pring: Pointer to driver SLI ring object.
5441 * @piocb: Pointer to address of newly added command iocb.
5443 * This function is called with hbalock held to add a command
5444 * iocb to the txq when SLI layer cannot submit the command iocb
5448 __lpfc_sli_ringtx_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
5449 struct lpfc_iocbq *piocb)
5451 /* Insert the caller's iocb in the txq tail for later processing. */
5452 list_add_tail(&piocb->list, &pring->txq);
5457 * lpfc_sli_next_iocb - Get the next iocb in the txq
5458 * @phba: Pointer to HBA context object.
5459 * @pring: Pointer to driver SLI ring object.
5460 * @piocb: Pointer to address of newly added command iocb.
5462 * This function is called with hbalock held before a new
5463 * iocb is submitted to the firmware. This function checks
5464 * txq to flush the iocbs in txq to Firmware before
5465 * submitting new iocbs to the Firmware.
5466 * If there are iocbs in the txq which need to be submitted
5467 * to firmware, lpfc_sli_next_iocb returns the first element
5468 * of the txq after dequeuing it from txq.
5469 * If there is no iocb in the txq then the function will return
5470 * *piocb and *piocb is set to NULL. Caller needs to check
5471 * *piocb to find if there are more commands in the txq.
5473 static struct lpfc_iocbq *
5474 lpfc_sli_next_iocb(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
5475 struct lpfc_iocbq **piocb)
5477 struct lpfc_iocbq * nextiocb;
5479 nextiocb = lpfc_sli_ringtx_get(phba, pring);
5489 * __lpfc_sli_issue_iocb_s3 - SLI3 device lockless ver of lpfc_sli_issue_iocb
5490 * @phba: Pointer to HBA context object.
5491 * @ring_number: SLI ring number to issue iocb on.
5492 * @piocb: Pointer to command iocb.
5493 * @flag: Flag indicating if this command can be put into txq.
5495 * __lpfc_sli_issue_iocb_s3 is used by other functions in the driver to issue
5496 * an iocb command to an HBA with SLI-3 interface spec. If the PCI slot is
5497 * recovering from error state, if HBA is resetting or if LPFC_STOP_IOCB_EVENT
5498 * flag is turned on, the function returns IOCB_ERROR. When the link is down,
5499 * this function allows only iocbs for posting buffers. This function finds
5500 * next available slot in the command ring and posts the command to the
5501 * available slot and writes the port attention register to request HBA start
5502 * processing new iocb. If there is no slot available in the ring and
5503 * flag & SLI_IOCB_RET_IOCB is set, the new iocb is added to the txq, otherwise
5504 * the function returns IOCB_BUSY.
5506 * This function is called with hbalock held. The function will return success
5507 * after it successfully submit the iocb to firmware or after adding to the
5511 __lpfc_sli_issue_iocb_s3(struct lpfc_hba *phba, uint32_t ring_number,
5512 struct lpfc_iocbq *piocb, uint32_t flag)
5514 struct lpfc_iocbq *nextiocb;
5516 struct lpfc_sli_ring *pring = &phba->sli.ring[ring_number];
5518 if (piocb->iocb_cmpl && (!piocb->vport) &&
5519 (piocb->iocb.ulpCommand != CMD_ABORT_XRI_CN) &&
5520 (piocb->iocb.ulpCommand != CMD_CLOSE_XRI_CN)) {
5521 lpfc_printf_log(phba, KERN_ERR,
5522 LOG_SLI | LOG_VPORT,
5523 "1807 IOCB x%x failed. No vport\n",
5524 piocb->iocb.ulpCommand);
5530 /* If the PCI channel is in offline state, do not post iocbs. */
5531 if (unlikely(pci_channel_offline(phba->pcidev)))
5534 /* If HBA has a deferred error attention, fail the iocb. */
5535 if (unlikely(phba->hba_flag & DEFER_ERATT))
5539 * We should never get an IOCB if we are in a < LINK_DOWN state
5541 if (unlikely(phba->link_state < LPFC_LINK_DOWN))
5545 * Check to see if we are blocking IOCB processing because of a
5546 * outstanding event.
5548 if (unlikely(pring->flag & LPFC_STOP_IOCB_EVENT))
5551 if (unlikely(phba->link_state == LPFC_LINK_DOWN)) {
5553 * Only CREATE_XRI, CLOSE_XRI, and QUE_RING_BUF
5554 * can be issued if the link is not up.
5556 switch (piocb->iocb.ulpCommand) {
5557 case CMD_GEN_REQUEST64_CR:
5558 case CMD_GEN_REQUEST64_CX:
5559 if (!(phba->sli.sli_flag & LPFC_MENLO_MAINT) ||
5560 (piocb->iocb.un.genreq64.w5.hcsw.Rctl !=
5562 (piocb->iocb.un.genreq64.w5.hcsw.Type !=
5563 MENLO_TRANSPORT_TYPE))
5567 case CMD_QUE_RING_BUF_CN:
5568 case CMD_QUE_RING_BUF64_CN:
5570 * For IOCBs, like QUE_RING_BUF, that have no rsp ring
5571 * completion, iocb_cmpl MUST be 0.
5573 if (piocb->iocb_cmpl)
5574 piocb->iocb_cmpl = NULL;
5576 case CMD_CREATE_XRI_CR:
5577 case CMD_CLOSE_XRI_CN:
5578 case CMD_CLOSE_XRI_CX:
5585 * For FCP commands, we must be in a state where we can process link
5588 } else if (unlikely(pring->ringno == phba->sli.fcp_ring &&
5589 !(phba->sli.sli_flag & LPFC_PROCESS_LA))) {
5593 while ((iocb = lpfc_sli_next_iocb_slot(phba, pring)) &&
5594 (nextiocb = lpfc_sli_next_iocb(phba, pring, &piocb)))
5595 lpfc_sli_submit_iocb(phba, pring, iocb, nextiocb);
5598 lpfc_sli_update_ring(phba, pring);
5600 lpfc_sli_update_full_ring(phba, pring);
5603 return IOCB_SUCCESS;
5608 pring->stats.iocb_cmd_delay++;
5612 if (!(flag & SLI_IOCB_RET_IOCB)) {
5613 __lpfc_sli_ringtx_put(phba, pring, piocb);
5614 return IOCB_SUCCESS;
5621 * lpfc_sli4_bpl2sgl - Convert the bpl/bde to a sgl.
5622 * @phba: Pointer to HBA context object.
5623 * @piocb: Pointer to command iocb.
5624 * @sglq: Pointer to the scatter gather queue object.
5626 * This routine converts the bpl or bde that is in the IOCB
5627 * to a sgl list for the sli4 hardware. The physical address
5628 * of the bpl/bde is converted back to a virtual address.
5629 * If the IOCB contains a BPL then the list of BDE's is
5630 * converted to sli4_sge's. If the IOCB contains a single
5631 * BDE then it is converted to a single sli_sge.
5632 * The IOCB is still in cpu endianess so the contents of
5633 * the bpl can be used without byte swapping.
5635 * Returns valid XRI = Success, NO_XRI = Failure.
5638 lpfc_sli4_bpl2sgl(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq,
5639 struct lpfc_sglq *sglq)
5641 uint16_t xritag = NO_XRI;
5642 struct ulp_bde64 *bpl = NULL;
5643 struct ulp_bde64 bde;
5644 struct sli4_sge *sgl = NULL;
5649 if (!piocbq || !sglq)
5652 sgl = (struct sli4_sge *)sglq->sgl;
5653 icmd = &piocbq->iocb;
5654 if (icmd->un.genreq64.bdl.bdeFlags == BUFF_TYPE_BLP_64) {
5655 numBdes = icmd->un.genreq64.bdl.bdeSize /
5656 sizeof(struct ulp_bde64);
5657 /* The addrHigh and addrLow fields within the IOCB
5658 * have not been byteswapped yet so there is no
5659 * need to swap them back.
5661 bpl = (struct ulp_bde64 *)
5662 ((struct lpfc_dmabuf *)piocbq->context3)->virt;
5667 for (i = 0; i < numBdes; i++) {
5668 /* Should already be byte swapped. */
5669 sgl->addr_hi = bpl->addrHigh;
5670 sgl->addr_lo = bpl->addrLow;
5671 /* swap the size field back to the cpu so we
5672 * can assign it to the sgl.
5674 bde.tus.w = le32_to_cpu(bpl->tus.w);
5675 bf_set(lpfc_sli4_sge_len, sgl, bde.tus.f.bdeSize);
5676 if ((i+1) == numBdes)
5677 bf_set(lpfc_sli4_sge_last, sgl, 1);
5679 bf_set(lpfc_sli4_sge_last, sgl, 0);
5680 sgl->word2 = cpu_to_le32(sgl->word2);
5681 sgl->word3 = cpu_to_le32(sgl->word3);
5685 } else if (icmd->un.genreq64.bdl.bdeFlags == BUFF_TYPE_BDE_64) {
5686 /* The addrHigh and addrLow fields of the BDE have not
5687 * been byteswapped yet so they need to be swapped
5688 * before putting them in the sgl.
5691 cpu_to_le32(icmd->un.genreq64.bdl.addrHigh);
5693 cpu_to_le32(icmd->un.genreq64.bdl.addrLow);
5694 bf_set(lpfc_sli4_sge_len, sgl,
5695 icmd->un.genreq64.bdl.bdeSize);
5696 bf_set(lpfc_sli4_sge_last, sgl, 1);
5697 sgl->word2 = cpu_to_le32(sgl->word2);
5698 sgl->word3 = cpu_to_le32(sgl->word3);
5700 return sglq->sli4_xritag;
5704 * lpfc_sli4_scmd_to_wqidx_distr - scsi command to SLI4 WQ index distribution
5705 * @phba: Pointer to HBA context object.
5706 * @piocb: Pointer to command iocb.
5708 * This routine performs a round robin SCSI command to SLI4 FCP WQ index
5711 * Return: index into SLI4 fast-path FCP queue index.
5714 lpfc_sli4_scmd_to_wqidx_distr(struct lpfc_hba *phba, struct lpfc_iocbq *piocb)
5716 static uint32_t fcp_qidx;
5718 return fcp_qidx++ % phba->cfg_fcp_wq_count;
5722 * lpfc_sli_iocb2wqe - Convert the IOCB to a work queue entry.
5723 * @phba: Pointer to HBA context object.
5724 * @piocb: Pointer to command iocb.
5725 * @wqe: Pointer to the work queue entry.
5727 * This routine converts the iocb command to its Work Queue Entry
5728 * equivalent. The wqe pointer should not have any fields set when
5729 * this routine is called because it will memcpy over them.
5730 * This routine does not set the CQ_ID or the WQEC bits in the
5733 * Returns: 0 = Success, IOCB_ERROR = Failure.
5736 lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq,
5737 union lpfc_wqe *wqe)
5739 uint32_t payload_len = 0;
5743 uint8_t command_type = ELS_COMMAND_NON_FIP;
5746 struct ulp_bde64 *bpl = NULL;
5748 fip = bf_get(lpfc_fip_flag, &phba->sli4_hba.sli4_flags);
5749 /* The fcp commands will set command type */
5750 if ((!(iocbq->iocb_flag & LPFC_IO_FCP)) && (!fip))
5751 command_type = ELS_COMMAND_NON_FIP;
5752 else if (!(iocbq->iocb_flag & LPFC_IO_FCP))
5753 command_type = ELS_COMMAND_FIP;
5754 else if (iocbq->iocb_flag & LPFC_IO_FCP)
5755 command_type = FCP_COMMAND;
5757 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5758 "2019 Invalid cmd 0x%x\n",
5759 iocbq->iocb.ulpCommand);
5762 /* Some of the fields are in the right position already */
5763 memcpy(wqe, &iocbq->iocb, sizeof(union lpfc_wqe));
5764 abort_tag = (uint32_t) iocbq->iotag;
5765 xritag = iocbq->sli4_xritag;
5766 wqe->words[7] = 0; /* The ct field has moved so reset */
5767 /* words0-2 bpl convert bde */
5768 if (iocbq->iocb.un.genreq64.bdl.bdeFlags == BUFF_TYPE_BLP_64) {
5769 bpl = (struct ulp_bde64 *)
5770 ((struct lpfc_dmabuf *)iocbq->context3)->virt;
5774 /* Should already be byte swapped. */
5775 wqe->generic.bde.addrHigh = le32_to_cpu(bpl->addrHigh);
5776 wqe->generic.bde.addrLow = le32_to_cpu(bpl->addrLow);
5777 /* swap the size field back to the cpu so we
5778 * can assign it to the sgl.
5780 wqe->generic.bde.tus.w = le32_to_cpu(bpl->tus.w);
5781 payload_len = wqe->generic.bde.tus.f.bdeSize;
5783 payload_len = iocbq->iocb.un.fcpi64.bdl.bdeSize;
5785 iocbq->iocb.ulpIoTag = iocbq->iotag;
5786 cmnd = iocbq->iocb.ulpCommand;
5788 switch (iocbq->iocb.ulpCommand) {
5789 case CMD_ELS_REQUEST64_CR:
5790 if (!iocbq->iocb.ulpLe) {
5791 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5792 "2007 Only Limited Edition cmd Format"
5793 " supported 0x%x\n",
5794 iocbq->iocb.ulpCommand);
5797 wqe->els_req.payload_len = payload_len;
5798 /* Els_reguest64 has a TMO */
5799 bf_set(wqe_tmo, &wqe->els_req.wqe_com,
5800 iocbq->iocb.ulpTimeout);
5801 /* Need a VF for word 4 set the vf bit*/
5802 bf_set(els_req64_vf, &wqe->els_req, 0);
5803 /* And a VFID for word 12 */
5804 bf_set(els_req64_vfid, &wqe->els_req, 0);
5806 * Set ct field to 3, indicates that the context_tag field
5807 * contains the FCFI and remote N_Port_ID is
5811 ct = ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l);
5812 bf_set(lpfc_wqe_gen_context, &wqe->generic,
5813 iocbq->iocb.ulpContext);
5815 if (iocbq->vport->fc_myDID != 0) {
5816 bf_set(els_req64_sid, &wqe->els_req,
5817 iocbq->vport->fc_myDID);
5818 bf_set(els_req64_sp, &wqe->els_req, 1);
5820 bf_set(lpfc_wqe_gen_ct, &wqe->generic, ct);
5821 bf_set(lpfc_wqe_gen_pu, &wqe->generic, 0);
5822 /* CCP CCPE PV PRI in word10 were set in the memcpy */
5824 case CMD_XMIT_SEQUENCE64_CR:
5825 /* word3 iocb=io_tag32 wqe=payload_offset */
5826 /* payload offset used for multilpe outstanding
5827 * sequences on the same exchange
5830 /* word4 relative_offset memcpy */
5831 /* word5 r_ctl/df_ctl memcpy */
5832 bf_set(lpfc_wqe_gen_pu, &wqe->generic, 0);
5833 wqe->xmit_sequence.xmit_len = payload_len;
5835 case CMD_XMIT_BCAST64_CN:
5836 /* word3 iocb=iotag32 wqe=payload_len */
5837 wqe->words[3] = 0; /* no definition for this in wqe */
5838 /* word4 iocb=rsvd wqe=rsvd */
5839 /* word5 iocb=rctl/type/df_ctl wqe=rctl/type/df_ctl memcpy */
5840 /* word6 iocb=ctxt_tag/io_tag wqe=ctxt_tag/xri */
5841 bf_set(lpfc_wqe_gen_ct, &wqe->generic,
5842 ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l));
5844 case CMD_FCP_IWRITE64_CR:
5845 command_type = FCP_COMMAND_DATA_OUT;
5846 /* The struct for wqe fcp_iwrite has 3 fields that are somewhat
5848 * word3 is payload_len: byte offset to the sgl entry for the
5850 * word4 is total xfer len, same as the IOCB->ulpParameter.
5851 * word5 is initial xfer len 0 = wait for xfer-ready
5854 /* Always wait for xfer-ready before sending data */
5855 wqe->fcp_iwrite.initial_xfer_len = 0;
5856 /* word 4 (xfer length) should have been set on the memcpy */
5858 /* allow write to fall through to read */
5859 case CMD_FCP_IREAD64_CR:
5860 /* FCP_CMD is always the 1st sgl entry */
5861 wqe->fcp_iread.payload_len =
5862 payload_len + sizeof(struct fcp_rsp);
5864 /* word 4 (xfer length) should have been set on the memcpy */
5866 bf_set(lpfc_wqe_gen_erp, &wqe->generic,
5867 iocbq->iocb.ulpFCP2Rcvy);
5868 bf_set(lpfc_wqe_gen_lnk, &wqe->generic, iocbq->iocb.ulpXS);
5869 /* The XC bit and the XS bit are similar. The driver never
5870 * tracked whether or not the exchange was previouslly open.
5871 * XC = Exchange create, 0 is create. 1 is already open.
5872 * XS = link cmd: 1 do not close the exchange after command.
5873 * XS = 0 close exchange when command completes.
5874 * The only time we would not set the XC bit is when the XS bit
5875 * is set and we are sending our 2nd or greater command on
5879 /* ALLOW read & write to fall through to ICMD64 */
5880 case CMD_FCP_ICMND64_CR:
5881 /* Always open the exchange */
5882 bf_set(wqe_xc, &wqe->fcp_iread.wqe_com, 0);
5884 wqe->words[10] &= 0xffff0000; /* zero out ebde count */
5885 bf_set(lpfc_wqe_gen_pu, &wqe->generic, iocbq->iocb.ulpPU);
5887 case CMD_GEN_REQUEST64_CR:
5888 /* word3 command length is described as byte offset to the
5889 * rsp_data. Would always be 16, sizeof(struct sli4_sge)
5894 wqe->gen_req.command_len = payload_len;
5895 /* Word4 parameter copied in the memcpy */
5896 /* Word5 [rctl, type, df_ctl, la] copied in memcpy */
5897 /* word6 context tag copied in memcpy */
5898 if (iocbq->iocb.ulpCt_h || iocbq->iocb.ulpCt_l) {
5899 ct = ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l);
5900 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5901 "2015 Invalid CT %x command 0x%x\n",
5902 ct, iocbq->iocb.ulpCommand);
5905 bf_set(lpfc_wqe_gen_ct, &wqe->generic, 0);
5906 bf_set(wqe_tmo, &wqe->gen_req.wqe_com,
5907 iocbq->iocb.ulpTimeout);
5909 bf_set(lpfc_wqe_gen_pu, &wqe->generic, iocbq->iocb.ulpPU);
5910 command_type = OTHER_COMMAND;
5912 case CMD_XMIT_ELS_RSP64_CX:
5913 /* words0-2 BDE memcpy */
5914 /* word3 iocb=iotag32 wqe=rsvd */
5916 /* word4 iocb=did wge=rsvd. */
5918 /* word5 iocb=rsvd wge=did */
5919 bf_set(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest,
5920 iocbq->iocb.un.elsreq64.remoteID);
5922 bf_set(lpfc_wqe_gen_ct, &wqe->generic,
5923 ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l));
5925 bf_set(lpfc_wqe_gen_pu, &wqe->generic, iocbq->iocb.ulpPU);
5926 bf_set(wqe_rcvoxid, &wqe->generic, iocbq->iocb.ulpContext);
5927 if (!iocbq->iocb.ulpCt_h && iocbq->iocb.ulpCt_l)
5928 bf_set(lpfc_wqe_gen_context, &wqe->generic,
5929 iocbq->vport->vpi + phba->vpi_base);
5930 command_type = OTHER_COMMAND;
5932 case CMD_CLOSE_XRI_CN:
5933 case CMD_ABORT_XRI_CN:
5934 case CMD_ABORT_XRI_CX:
5935 /* words 0-2 memcpy should be 0 rserved */
5936 /* port will send abts */
5937 if (iocbq->iocb.ulpCommand == CMD_CLOSE_XRI_CN)
5939 * The link is down so the fw does not need to send abts
5942 bf_set(abort_cmd_ia, &wqe->abort_cmd, 1);
5944 bf_set(abort_cmd_ia, &wqe->abort_cmd, 0);
5945 bf_set(abort_cmd_criteria, &wqe->abort_cmd, T_XRI_TAG);
5946 abort_tag = iocbq->iocb.un.acxri.abortIoTag;
5948 bf_set(lpfc_wqe_gen_ct, &wqe->generic,
5949 ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l));
5950 abort_tag = iocbq->iocb.un.acxri.abortIoTag;
5951 wqe->generic.abort_tag = abort_tag;
5953 * The abort handler will send us CMD_ABORT_XRI_CN or
5954 * CMD_CLOSE_XRI_CN and the fw only accepts CMD_ABORT_XRI_CX
5956 bf_set(lpfc_wqe_gen_command, &wqe->generic, CMD_ABORT_XRI_CX);
5957 cmnd = CMD_ABORT_XRI_CX;
5958 command_type = OTHER_COMMAND;
5961 case CMD_XRI_ABORTED_CX:
5962 case CMD_CREATE_XRI_CR: /* Do we expect to use this? */
5963 /* words0-2 are all 0's no bde */
5964 /* word3 and word4 are rsvrd */
5967 /* word5 iocb=rsvd wge=did */
5968 /* There is no remote port id in the IOCB? */
5969 /* Let this fall through and fail */
5970 case CMD_IOCB_FCP_IBIDIR64_CR: /* bidirectional xfer */
5971 case CMD_FCP_TSEND64_CX: /* Target mode send xfer-ready */
5972 case CMD_FCP_TRSP64_CX: /* Target mode rcv */
5973 case CMD_FCP_AUTO_TRSP_CX: /* Auto target rsp */
5975 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5976 "2014 Invalid command 0x%x\n",
5977 iocbq->iocb.ulpCommand);
5982 bf_set(lpfc_wqe_gen_xri, &wqe->generic, xritag);
5983 bf_set(lpfc_wqe_gen_request_tag, &wqe->generic, iocbq->iotag);
5984 wqe->generic.abort_tag = abort_tag;
5985 bf_set(lpfc_wqe_gen_cmd_type, &wqe->generic, command_type);
5986 bf_set(lpfc_wqe_gen_command, &wqe->generic, cmnd);
5987 bf_set(lpfc_wqe_gen_class, &wqe->generic, iocbq->iocb.ulpClass);
5988 bf_set(lpfc_wqe_gen_cq_id, &wqe->generic, LPFC_WQE_CQ_ID_DEFAULT);
5994 * __lpfc_sli_issue_iocb_s4 - SLI4 device lockless ver of lpfc_sli_issue_iocb
5995 * @phba: Pointer to HBA context object.
5996 * @ring_number: SLI ring number to issue iocb on.
5997 * @piocb: Pointer to command iocb.
5998 * @flag: Flag indicating if this command can be put into txq.
6000 * __lpfc_sli_issue_iocb_s4 is used by other functions in the driver to issue
6001 * an iocb command to an HBA with SLI-4 interface spec.
6003 * This function is called with hbalock held. The function will return success
6004 * after it successfully submit the iocb to firmware or after adding to the
6008 __lpfc_sli_issue_iocb_s4(struct lpfc_hba *phba, uint32_t ring_number,
6009 struct lpfc_iocbq *piocb, uint32_t flag)
6011 struct lpfc_sglq *sglq;
6014 struct lpfc_sli_ring *pring = &phba->sli.ring[ring_number];
6017 if (piocb->sli4_xritag == NO_XRI) {
6018 if (piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN ||
6019 piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN)
6022 sglq = __lpfc_sli_get_sglq(phba);
6025 piocb->sli4_xritag = sglq->sli4_xritag;
6027 } else if (piocb->iocb_flag & LPFC_IO_FCP) {
6028 sglq = NULL; /* These IO's already have an XRI and
6032 /* This is a continuation of a commandi,(CX) so this
6033 * sglq is on the active list
6035 sglq = __lpfc_get_active_sglq(phba, piocb->sli4_xritag);
6041 xritag = lpfc_sli4_bpl2sgl(phba, piocb, sglq);
6042 if (xritag != sglq->sli4_xritag)
6046 if (lpfc_sli4_iocb2wqe(phba, piocb, &wqe))
6049 if (piocb->iocb_flag & LPFC_IO_FCP) {
6050 fcp_wqidx = lpfc_sli4_scmd_to_wqidx_distr(phba, piocb);
6051 if (lpfc_sli4_wq_put(phba->sli4_hba.fcp_wq[fcp_wqidx], &wqe))
6054 if (lpfc_sli4_wq_put(phba->sli4_hba.els_wq, &wqe))
6057 lpfc_sli_ringtxcmpl_put(phba, pring, piocb);
6063 * __lpfc_sli_issue_iocb - Wrapper func of lockless version for issuing iocb
6065 * This routine wraps the actual lockless version for issusing IOCB function
6066 * pointer from the lpfc_hba struct.
6069 * IOCB_ERROR - Error
6070 * IOCB_SUCCESS - Success
6074 __lpfc_sli_issue_iocb(struct lpfc_hba *phba, uint32_t ring_number,
6075 struct lpfc_iocbq *piocb, uint32_t flag)
6077 return phba->__lpfc_sli_issue_iocb(phba, ring_number, piocb, flag);
6081 * lpfc_sli_api_table_setup - Set up sli api fucntion jump table
6082 * @phba: The hba struct for which this call is being executed.
6083 * @dev_grp: The HBA PCI-Device group number.
6085 * This routine sets up the SLI interface API function jump table in @phba
6087 * Returns: 0 - success, -ENODEV - failure.
6090 lpfc_sli_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
6094 case LPFC_PCI_DEV_LP:
6095 phba->__lpfc_sli_issue_iocb = __lpfc_sli_issue_iocb_s3;
6096 phba->__lpfc_sli_release_iocbq = __lpfc_sli_release_iocbq_s3;
6098 case LPFC_PCI_DEV_OC:
6099 phba->__lpfc_sli_issue_iocb = __lpfc_sli_issue_iocb_s4;
6100 phba->__lpfc_sli_release_iocbq = __lpfc_sli_release_iocbq_s4;
6103 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6104 "1419 Invalid HBA PCI-device group: 0x%x\n",
6109 phba->lpfc_get_iocb_from_iocbq = lpfc_get_iocb_from_iocbq;
6114 * lpfc_sli_issue_iocb - Wrapper function for __lpfc_sli_issue_iocb
6115 * @phba: Pointer to HBA context object.
6116 * @pring: Pointer to driver SLI ring object.
6117 * @piocb: Pointer to command iocb.
6118 * @flag: Flag indicating if this command can be put into txq.
6120 * lpfc_sli_issue_iocb is a wrapper around __lpfc_sli_issue_iocb
6121 * function. This function gets the hbalock and calls
6122 * __lpfc_sli_issue_iocb function and will return the error returned
6123 * by __lpfc_sli_issue_iocb function. This wrapper is used by
6124 * functions which do not hold hbalock.
6127 lpfc_sli_issue_iocb(struct lpfc_hba *phba, uint32_t ring_number,
6128 struct lpfc_iocbq *piocb, uint32_t flag)
6130 unsigned long iflags;
6133 spin_lock_irqsave(&phba->hbalock, iflags);
6134 rc = __lpfc_sli_issue_iocb(phba, ring_number, piocb, flag);
6135 spin_unlock_irqrestore(&phba->hbalock, iflags);
6141 * lpfc_extra_ring_setup - Extra ring setup function
6142 * @phba: Pointer to HBA context object.
6144 * This function is called while driver attaches with the
6145 * HBA to setup the extra ring. The extra ring is used
6146 * only when driver needs to support target mode functionality
6147 * or IP over FC functionalities.
6149 * This function is called with no lock held.
6152 lpfc_extra_ring_setup( struct lpfc_hba *phba)
6154 struct lpfc_sli *psli;
6155 struct lpfc_sli_ring *pring;
6159 /* Adjust cmd/rsp ring iocb entries more evenly */
6161 /* Take some away from the FCP ring */
6162 pring = &psli->ring[psli->fcp_ring];
6163 pring->numCiocb -= SLI2_IOCB_CMD_R1XTRA_ENTRIES;
6164 pring->numRiocb -= SLI2_IOCB_RSP_R1XTRA_ENTRIES;
6165 pring->numCiocb -= SLI2_IOCB_CMD_R3XTRA_ENTRIES;
6166 pring->numRiocb -= SLI2_IOCB_RSP_R3XTRA_ENTRIES;
6168 /* and give them to the extra ring */
6169 pring = &psli->ring[psli->extra_ring];
6171 pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
6172 pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
6173 pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
6174 pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
6176 /* Setup default profile for this ring */
6177 pring->iotag_max = 4096;
6178 pring->num_mask = 1;
6179 pring->prt[0].profile = 0; /* Mask 0 */
6180 pring->prt[0].rctl = phba->cfg_multi_ring_rctl;
6181 pring->prt[0].type = phba->cfg_multi_ring_type;
6182 pring->prt[0].lpfc_sli_rcv_unsol_event = NULL;
6187 * lpfc_sli_async_event_handler - ASYNC iocb handler function
6188 * @phba: Pointer to HBA context object.
6189 * @pring: Pointer to driver SLI ring object.
6190 * @iocbq: Pointer to iocb object.
6192 * This function is called by the slow ring event handler
6193 * function when there is an ASYNC event iocb in the ring.
6194 * This function is called with no lock held.
6195 * Currently this function handles only temperature related
6196 * ASYNC events. The function decodes the temperature sensor
6197 * event message and posts events for the management applications.
6200 lpfc_sli_async_event_handler(struct lpfc_hba * phba,
6201 struct lpfc_sli_ring * pring, struct lpfc_iocbq * iocbq)
6206 struct temp_event temp_event_data;
6207 struct Scsi_Host *shost;
6210 icmd = &iocbq->iocb;
6211 evt_code = icmd->un.asyncstat.evt_code;
6212 temp = icmd->ulpContext;
6214 if ((evt_code != ASYNC_TEMP_WARN) &&
6215 (evt_code != ASYNC_TEMP_SAFE)) {
6216 iocb_w = (uint32_t *) icmd;
6217 lpfc_printf_log(phba,
6220 "0346 Ring %d handler: unexpected ASYNC_STATUS"
6222 "W0 0x%08x W1 0x%08x W2 0x%08x W3 0x%08x\n"
6223 "W4 0x%08x W5 0x%08x W6 0x%08x W7 0x%08x\n"
6224 "W8 0x%08x W9 0x%08x W10 0x%08x W11 0x%08x\n"
6225 "W12 0x%08x W13 0x%08x W14 0x%08x W15 0x%08x\n",
6227 icmd->un.asyncstat.evt_code,
6228 iocb_w[0], iocb_w[1], iocb_w[2], iocb_w[3],
6229 iocb_w[4], iocb_w[5], iocb_w[6], iocb_w[7],
6230 iocb_w[8], iocb_w[9], iocb_w[10], iocb_w[11],
6231 iocb_w[12], iocb_w[13], iocb_w[14], iocb_w[15]);
6235 temp_event_data.data = (uint32_t)temp;
6236 temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
6237 if (evt_code == ASYNC_TEMP_WARN) {
6238 temp_event_data.event_code = LPFC_THRESHOLD_TEMP;
6239 lpfc_printf_log(phba,
6242 "0347 Adapter is very hot, please take "
6243 "corrective action. temperature : %d Celsius\n",
6246 if (evt_code == ASYNC_TEMP_SAFE) {
6247 temp_event_data.event_code = LPFC_NORMAL_TEMP;
6248 lpfc_printf_log(phba,
6251 "0340 Adapter temperature is OK now. "
6252 "temperature : %d Celsius\n",
6256 /* Send temperature change event to applications */
6257 shost = lpfc_shost_from_vport(phba->pport);
6258 fc_host_post_vendor_event(shost, fc_get_event_number(),
6259 sizeof(temp_event_data), (char *) &temp_event_data,
6266 * lpfc_sli_setup - SLI ring setup function
6267 * @phba: Pointer to HBA context object.
6269 * lpfc_sli_setup sets up rings of the SLI interface with
6270 * number of iocbs per ring and iotags. This function is
6271 * called while driver attach to the HBA and before the
6272 * interrupts are enabled. So there is no need for locking.
6274 * This function always returns 0.
6277 lpfc_sli_setup(struct lpfc_hba *phba)
6279 int i, totiocbsize = 0;
6280 struct lpfc_sli *psli = &phba->sli;
6281 struct lpfc_sli_ring *pring;
6283 psli->num_rings = MAX_CONFIGURED_RINGS;
6285 psli->fcp_ring = LPFC_FCP_RING;
6286 psli->next_ring = LPFC_FCP_NEXT_RING;
6287 psli->extra_ring = LPFC_EXTRA_RING;
6289 psli->iocbq_lookup = NULL;
6290 psli->iocbq_lookup_len = 0;
6291 psli->last_iotag = 0;
6293 for (i = 0; i < psli->num_rings; i++) {
6294 pring = &psli->ring[i];
6296 case LPFC_FCP_RING: /* ring 0 - FCP */
6297 /* numCiocb and numRiocb are used in config_port */
6298 pring->numCiocb = SLI2_IOCB_CMD_R0_ENTRIES;
6299 pring->numRiocb = SLI2_IOCB_RSP_R0_ENTRIES;
6300 pring->numCiocb += SLI2_IOCB_CMD_R1XTRA_ENTRIES;
6301 pring->numRiocb += SLI2_IOCB_RSP_R1XTRA_ENTRIES;
6302 pring->numCiocb += SLI2_IOCB_CMD_R3XTRA_ENTRIES;
6303 pring->numRiocb += SLI2_IOCB_RSP_R3XTRA_ENTRIES;
6304 pring->sizeCiocb = (phba->sli_rev == 3) ?
6305 SLI3_IOCB_CMD_SIZE :
6307 pring->sizeRiocb = (phba->sli_rev == 3) ?
6308 SLI3_IOCB_RSP_SIZE :
6310 pring->iotag_ctr = 0;
6312 (phba->cfg_hba_queue_depth * 2);
6313 pring->fast_iotag = pring->iotag_max;
6314 pring->num_mask = 0;
6316 case LPFC_EXTRA_RING: /* ring 1 - EXTRA */
6317 /* numCiocb and numRiocb are used in config_port */
6318 pring->numCiocb = SLI2_IOCB_CMD_R1_ENTRIES;
6319 pring->numRiocb = SLI2_IOCB_RSP_R1_ENTRIES;
6320 pring->sizeCiocb = (phba->sli_rev == 3) ?
6321 SLI3_IOCB_CMD_SIZE :
6323 pring->sizeRiocb = (phba->sli_rev == 3) ?
6324 SLI3_IOCB_RSP_SIZE :
6326 pring->iotag_max = phba->cfg_hba_queue_depth;
6327 pring->num_mask = 0;
6329 case LPFC_ELS_RING: /* ring 2 - ELS / CT */
6330 /* numCiocb and numRiocb are used in config_port */
6331 pring->numCiocb = SLI2_IOCB_CMD_R2_ENTRIES;
6332 pring->numRiocb = SLI2_IOCB_RSP_R2_ENTRIES;
6333 pring->sizeCiocb = (phba->sli_rev == 3) ?
6334 SLI3_IOCB_CMD_SIZE :
6336 pring->sizeRiocb = (phba->sli_rev == 3) ?
6337 SLI3_IOCB_RSP_SIZE :
6339 pring->fast_iotag = 0;
6340 pring->iotag_ctr = 0;
6341 pring->iotag_max = 4096;
6342 pring->lpfc_sli_rcv_async_status =
6343 lpfc_sli_async_event_handler;
6344 pring->num_mask = 4;
6345 pring->prt[0].profile = 0; /* Mask 0 */
6346 pring->prt[0].rctl = FC_ELS_REQ;
6347 pring->prt[0].type = FC_ELS_DATA;
6348 pring->prt[0].lpfc_sli_rcv_unsol_event =
6349 lpfc_els_unsol_event;
6350 pring->prt[1].profile = 0; /* Mask 1 */
6351 pring->prt[1].rctl = FC_ELS_RSP;
6352 pring->prt[1].type = FC_ELS_DATA;
6353 pring->prt[1].lpfc_sli_rcv_unsol_event =
6354 lpfc_els_unsol_event;
6355 pring->prt[2].profile = 0; /* Mask 2 */
6356 /* NameServer Inquiry */
6357 pring->prt[2].rctl = FC_UNSOL_CTL;
6359 pring->prt[2].type = FC_COMMON_TRANSPORT_ULP;
6360 pring->prt[2].lpfc_sli_rcv_unsol_event =
6361 lpfc_ct_unsol_event;
6362 pring->prt[3].profile = 0; /* Mask 3 */
6363 /* NameServer response */
6364 pring->prt[3].rctl = FC_SOL_CTL;
6366 pring->prt[3].type = FC_COMMON_TRANSPORT_ULP;
6367 pring->prt[3].lpfc_sli_rcv_unsol_event =
6368 lpfc_ct_unsol_event;
6371 totiocbsize += (pring->numCiocb * pring->sizeCiocb) +
6372 (pring->numRiocb * pring->sizeRiocb);
6374 if (totiocbsize > MAX_SLIM_IOCB_SIZE) {
6375 /* Too many cmd / rsp ring entries in SLI2 SLIM */
6376 printk(KERN_ERR "%d:0462 Too many cmd / rsp ring entries in "
6377 "SLI2 SLIM Data: x%x x%lx\n",
6378 phba->brd_no, totiocbsize,
6379 (unsigned long) MAX_SLIM_IOCB_SIZE);
6381 if (phba->cfg_multi_ring_support == 2)
6382 lpfc_extra_ring_setup(phba);
6388 * lpfc_sli_queue_setup - Queue initialization function
6389 * @phba: Pointer to HBA context object.
6391 * lpfc_sli_queue_setup sets up mailbox queues and iocb queues for each
6392 * ring. This function also initializes ring indices of each ring.
6393 * This function is called during the initialization of the SLI
6394 * interface of an HBA.
6395 * This function is called with no lock held and always returns
6399 lpfc_sli_queue_setup(struct lpfc_hba *phba)
6401 struct lpfc_sli *psli;
6402 struct lpfc_sli_ring *pring;
6406 spin_lock_irq(&phba->hbalock);
6407 INIT_LIST_HEAD(&psli->mboxq);
6408 INIT_LIST_HEAD(&psli->mboxq_cmpl);
6409 /* Initialize list headers for txq and txcmplq as double linked lists */
6410 for (i = 0; i < psli->num_rings; i++) {
6411 pring = &psli->ring[i];
6413 pring->next_cmdidx = 0;
6414 pring->local_getidx = 0;
6416 INIT_LIST_HEAD(&pring->txq);
6417 INIT_LIST_HEAD(&pring->txcmplq);
6418 INIT_LIST_HEAD(&pring->iocb_continueq);
6419 INIT_LIST_HEAD(&pring->iocb_continue_saveq);
6420 INIT_LIST_HEAD(&pring->postbufq);
6422 spin_unlock_irq(&phba->hbalock);
6427 * lpfc_sli_mbox_sys_flush - Flush mailbox command sub-system
6428 * @phba: Pointer to HBA context object.
6430 * This routine flushes the mailbox command subsystem. It will unconditionally
6431 * flush all the mailbox commands in the three possible stages in the mailbox
6432 * command sub-system: pending mailbox command queue; the outstanding mailbox
6433 * command; and completed mailbox command queue. It is caller's responsibility
6434 * to make sure that the driver is in the proper state to flush the mailbox
6435 * command sub-system. Namely, the posting of mailbox commands into the
6436 * pending mailbox command queue from the various clients must be stopped;
6437 * either the HBA is in a state that it will never works on the outstanding
6438 * mailbox command (such as in EEH or ERATT conditions) or the outstanding
6439 * mailbox command has been completed.
6442 lpfc_sli_mbox_sys_flush(struct lpfc_hba *phba)
6444 LIST_HEAD(completions);
6445 struct lpfc_sli *psli = &phba->sli;
6447 unsigned long iflag;
6449 /* Flush all the mailbox commands in the mbox system */
6450 spin_lock_irqsave(&phba->hbalock, iflag);
6451 /* The pending mailbox command queue */
6452 list_splice_init(&phba->sli.mboxq, &completions);
6453 /* The outstanding active mailbox command */
6454 if (psli->mbox_active) {
6455 list_add_tail(&psli->mbox_active->list, &completions);
6456 psli->mbox_active = NULL;
6457 psli->sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
6459 /* The completed mailbox command queue */
6460 list_splice_init(&phba->sli.mboxq_cmpl, &completions);
6461 spin_unlock_irqrestore(&phba->hbalock, iflag);
6463 /* Return all flushed mailbox commands with MBX_NOT_FINISHED status */
6464 while (!list_empty(&completions)) {
6465 list_remove_head(&completions, pmb, LPFC_MBOXQ_t, list);
6466 pmb->u.mb.mbxStatus = MBX_NOT_FINISHED;
6468 pmb->mbox_cmpl(phba, pmb);
6473 * lpfc_sli_host_down - Vport cleanup function
6474 * @vport: Pointer to virtual port object.
6476 * lpfc_sli_host_down is called to clean up the resources
6477 * associated with a vport before destroying virtual
6478 * port data structures.
6479 * This function does following operations:
6480 * - Free discovery resources associated with this virtual
6482 * - Free iocbs associated with this virtual port in
6484 * - Send abort for all iocb commands associated with this
6487 * This function is called with no lock held and always returns 1.
6490 lpfc_sli_host_down(struct lpfc_vport *vport)
6492 LIST_HEAD(completions);
6493 struct lpfc_hba *phba = vport->phba;
6494 struct lpfc_sli *psli = &phba->sli;
6495 struct lpfc_sli_ring *pring;
6496 struct lpfc_iocbq *iocb, *next_iocb;
6498 unsigned long flags = 0;
6499 uint16_t prev_pring_flag;
6501 lpfc_cleanup_discovery_resources(vport);
6503 spin_lock_irqsave(&phba->hbalock, flags);
6504 for (i = 0; i < psli->num_rings; i++) {
6505 pring = &psli->ring[i];
6506 prev_pring_flag = pring->flag;
6507 /* Only slow rings */
6508 if (pring->ringno == LPFC_ELS_RING) {
6509 pring->flag |= LPFC_DEFERRED_RING_EVENT;
6510 /* Set the lpfc data pending flag */
6511 set_bit(LPFC_DATA_READY, &phba->data_flags);
6514 * Error everything on the txq since these iocbs have not been
6515 * given to the FW yet.
6517 list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
6518 if (iocb->vport != vport)
6520 list_move_tail(&iocb->list, &completions);
6524 /* Next issue ABTS for everything on the txcmplq */
6525 list_for_each_entry_safe(iocb, next_iocb, &pring->txcmplq,
6527 if (iocb->vport != vport)
6529 lpfc_sli_issue_abort_iotag(phba, pring, iocb);
6532 pring->flag = prev_pring_flag;
6535 spin_unlock_irqrestore(&phba->hbalock, flags);
6537 /* Cancel all the IOCBs from the completions list */
6538 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6544 * lpfc_sli_hba_down - Resource cleanup function for the HBA
6545 * @phba: Pointer to HBA context object.
6547 * This function cleans up all iocb, buffers, mailbox commands
6548 * while shutting down the HBA. This function is called with no
6549 * lock held and always returns 1.
6550 * This function does the following to cleanup driver resources:
6551 * - Free discovery resources for each virtual port
6552 * - Cleanup any pending fabric iocbs
6553 * - Iterate through the iocb txq and free each entry
6555 * - Free up any buffer posted to the HBA
6556 * - Free mailbox commands in the mailbox queue.
6559 lpfc_sli_hba_down(struct lpfc_hba *phba)
6561 LIST_HEAD(completions);
6562 struct lpfc_sli *psli = &phba->sli;
6563 struct lpfc_sli_ring *pring;
6564 struct lpfc_dmabuf *buf_ptr;
6565 unsigned long flags = 0;
6568 /* Shutdown the mailbox command sub-system */
6569 lpfc_sli_mbox_sys_shutdown(phba);
6571 lpfc_hba_down_prep(phba);
6573 lpfc_fabric_abort_hba(phba);
6575 spin_lock_irqsave(&phba->hbalock, flags);
6576 for (i = 0; i < psli->num_rings; i++) {
6577 pring = &psli->ring[i];
6578 /* Only slow rings */
6579 if (pring->ringno == LPFC_ELS_RING) {
6580 pring->flag |= LPFC_DEFERRED_RING_EVENT;
6581 /* Set the lpfc data pending flag */
6582 set_bit(LPFC_DATA_READY, &phba->data_flags);
6586 * Error everything on the txq since these iocbs have not been
6587 * given to the FW yet.
6589 list_splice_init(&pring->txq, &completions);
6593 spin_unlock_irqrestore(&phba->hbalock, flags);
6595 /* Cancel all the IOCBs from the completions list */
6596 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
6599 spin_lock_irqsave(&phba->hbalock, flags);
6600 list_splice_init(&phba->elsbuf, &completions);
6601 phba->elsbuf_cnt = 0;
6602 phba->elsbuf_prev_cnt = 0;
6603 spin_unlock_irqrestore(&phba->hbalock, flags);
6605 while (!list_empty(&completions)) {
6606 list_remove_head(&completions, buf_ptr,
6607 struct lpfc_dmabuf, list);
6608 lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
6612 /* Return any active mbox cmds */
6613 del_timer_sync(&psli->mbox_tmo);
6615 spin_lock_irqsave(&phba->pport->work_port_lock, flags);
6616 phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
6617 spin_unlock_irqrestore(&phba->pport->work_port_lock, flags);
6623 * lpfc_sli4_hba_down - PCI function resource cleanup for the SLI4 HBA
6624 * @phba: Pointer to HBA context object.
6626 * This function cleans up all queues, iocb, buffers, mailbox commands while
6627 * shutting down the SLI4 HBA FCoE function. This function is called with no
6628 * lock held and always returns 1.
6630 * This function does the following to cleanup driver FCoE function resources:
6631 * - Free discovery resources for each virtual port
6632 * - Cleanup any pending fabric iocbs
6633 * - Iterate through the iocb txq and free each entry in the list.
6634 * - Free up any buffer posted to the HBA.
6635 * - Clean up all the queue entries: WQ, RQ, MQ, EQ, CQ, etc.
6636 * - Free mailbox commands in the mailbox queue.
6639 lpfc_sli4_hba_down(struct lpfc_hba *phba)
6641 /* Stop the SLI4 device port */
6642 lpfc_stop_port(phba);
6644 /* Tear down the queues in the HBA */
6645 lpfc_sli4_queue_unset(phba);
6647 /* unregister default FCFI from the HBA */
6648 lpfc_sli4_fcfi_unreg(phba, phba->fcf.fcfi);
6654 * lpfc_sli_pcimem_bcopy - SLI memory copy function
6655 * @srcp: Source memory pointer.
6656 * @destp: Destination memory pointer.
6657 * @cnt: Number of words required to be copied.
6659 * This function is used for copying data between driver memory
6660 * and the SLI memory. This function also changes the endianness
6661 * of each word if native endianness is different from SLI
6662 * endianness. This function can be called with or without
6666 lpfc_sli_pcimem_bcopy(void *srcp, void *destp, uint32_t cnt)
6668 uint32_t *src = srcp;
6669 uint32_t *dest = destp;
6673 for (i = 0; i < (int)cnt; i += sizeof (uint32_t)) {
6675 ldata = le32_to_cpu(ldata);
6684 * lpfc_sli_ringpostbuf_put - Function to add a buffer to postbufq
6685 * @phba: Pointer to HBA context object.
6686 * @pring: Pointer to driver SLI ring object.
6687 * @mp: Pointer to driver buffer object.
6689 * This function is called with no lock held.
6690 * It always return zero after adding the buffer to the postbufq
6694 lpfc_sli_ringpostbuf_put(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
6695 struct lpfc_dmabuf *mp)
6697 /* Stick struct lpfc_dmabuf at end of postbufq so driver can look it up
6699 spin_lock_irq(&phba->hbalock);
6700 list_add_tail(&mp->list, &pring->postbufq);
6701 pring->postbufq_cnt++;
6702 spin_unlock_irq(&phba->hbalock);
6707 * lpfc_sli_get_buffer_tag - allocates a tag for a CMD_QUE_XRI64_CX buffer
6708 * @phba: Pointer to HBA context object.
6710 * When HBQ is enabled, buffers are searched based on tags. This function
6711 * allocates a tag for buffer posted using CMD_QUE_XRI64_CX iocb. The
6712 * tag is bit wise or-ed with QUE_BUFTAG_BIT to make sure that the tag
6713 * does not conflict with tags of buffer posted for unsolicited events.
6714 * The function returns the allocated tag. The function is called with
6718 lpfc_sli_get_buffer_tag(struct lpfc_hba *phba)
6720 spin_lock_irq(&phba->hbalock);
6721 phba->buffer_tag_count++;
6723 * Always set the QUE_BUFTAG_BIT to distiguish between
6724 * a tag assigned by HBQ.
6726 phba->buffer_tag_count |= QUE_BUFTAG_BIT;
6727 spin_unlock_irq(&phba->hbalock);
6728 return phba->buffer_tag_count;
6732 * lpfc_sli_ring_taggedbuf_get - find HBQ buffer associated with given tag
6733 * @phba: Pointer to HBA context object.
6734 * @pring: Pointer to driver SLI ring object.
6737 * Buffers posted using CMD_QUE_XRI64_CX iocb are in pring->postbufq
6738 * list. After HBA DMA data to these buffers, CMD_IOCB_RET_XRI64_CX
6739 * iocb is posted to the response ring with the tag of the buffer.
6740 * This function searches the pring->postbufq list using the tag
6741 * to find buffer associated with CMD_IOCB_RET_XRI64_CX
6742 * iocb. If the buffer is found then lpfc_dmabuf object of the
6743 * buffer is returned to the caller else NULL is returned.
6744 * This function is called with no lock held.
6746 struct lpfc_dmabuf *
6747 lpfc_sli_ring_taggedbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
6750 struct lpfc_dmabuf *mp, *next_mp;
6751 struct list_head *slp = &pring->postbufq;
6753 /* Search postbufq, from the begining, looking for a match on tag */
6754 spin_lock_irq(&phba->hbalock);
6755 list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
6756 if (mp->buffer_tag == tag) {
6757 list_del_init(&mp->list);
6758 pring->postbufq_cnt--;
6759 spin_unlock_irq(&phba->hbalock);
6764 spin_unlock_irq(&phba->hbalock);
6765 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6766 "0402 Cannot find virtual addr for buffer tag on "
6767 "ring %d Data x%lx x%p x%p x%x\n",
6768 pring->ringno, (unsigned long) tag,
6769 slp->next, slp->prev, pring->postbufq_cnt);
6775 * lpfc_sli_ringpostbuf_get - search buffers for unsolicited CT and ELS events
6776 * @phba: Pointer to HBA context object.
6777 * @pring: Pointer to driver SLI ring object.
6778 * @phys: DMA address of the buffer.
6780 * This function searches the buffer list using the dma_address
6781 * of unsolicited event to find the driver's lpfc_dmabuf object
6782 * corresponding to the dma_address. The function returns the
6783 * lpfc_dmabuf object if a buffer is found else it returns NULL.
6784 * This function is called by the ct and els unsolicited event
6785 * handlers to get the buffer associated with the unsolicited
6788 * This function is called with no lock held.
6790 struct lpfc_dmabuf *
6791 lpfc_sli_ringpostbuf_get(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
6794 struct lpfc_dmabuf *mp, *next_mp;
6795 struct list_head *slp = &pring->postbufq;
6797 /* Search postbufq, from the begining, looking for a match on phys */
6798 spin_lock_irq(&phba->hbalock);
6799 list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
6800 if (mp->phys == phys) {
6801 list_del_init(&mp->list);
6802 pring->postbufq_cnt--;
6803 spin_unlock_irq(&phba->hbalock);
6808 spin_unlock_irq(&phba->hbalock);
6809 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6810 "0410 Cannot find virtual addr for mapped buf on "
6811 "ring %d Data x%llx x%p x%p x%x\n",
6812 pring->ringno, (unsigned long long)phys,
6813 slp->next, slp->prev, pring->postbufq_cnt);
6818 * lpfc_sli_abort_els_cmpl - Completion handler for the els abort iocbs
6819 * @phba: Pointer to HBA context object.
6820 * @cmdiocb: Pointer to driver command iocb object.
6821 * @rspiocb: Pointer to driver response iocb object.
6823 * This function is the completion handler for the abort iocbs for
6824 * ELS commands. This function is called from the ELS ring event
6825 * handler with no lock held. This function frees memory resources
6826 * associated with the abort iocb.
6829 lpfc_sli_abort_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
6830 struct lpfc_iocbq *rspiocb)
6832 IOCB_t *irsp = &rspiocb->iocb;
6833 uint16_t abort_iotag, abort_context;
6834 struct lpfc_iocbq *abort_iocb;
6835 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
6839 if (irsp->ulpStatus) {
6840 abort_context = cmdiocb->iocb.un.acxri.abortContextTag;
6841 abort_iotag = cmdiocb->iocb.un.acxri.abortIoTag;
6843 spin_lock_irq(&phba->hbalock);
6844 if (abort_iotag != 0 && abort_iotag <= phba->sli.last_iotag)
6845 abort_iocb = phba->sli.iocbq_lookup[abort_iotag];
6847 lpfc_printf_log(phba, KERN_INFO, LOG_ELS | LOG_SLI,
6848 "0327 Cannot abort els iocb %p "
6849 "with tag %x context %x, abort status %x, "
6851 abort_iocb, abort_iotag, abort_context,
6852 irsp->ulpStatus, irsp->un.ulpWord[4]);
6855 * If the iocb is not found in Firmware queue the iocb
6856 * might have completed already. Do not free it again.
6858 if (irsp->ulpStatus == IOSTAT_LOCAL_REJECT) {
6859 spin_unlock_irq(&phba->hbalock);
6860 lpfc_sli_release_iocbq(phba, cmdiocb);
6864 * make sure we have the right iocbq before taking it
6865 * off the txcmplq and try to call completion routine.
6868 abort_iocb->iocb.ulpContext != abort_context ||
6869 (abort_iocb->iocb_flag & LPFC_DRIVER_ABORTED) == 0)
6870 spin_unlock_irq(&phba->hbalock);
6872 list_del_init(&abort_iocb->list);
6873 pring->txcmplq_cnt--;
6874 spin_unlock_irq(&phba->hbalock);
6876 /* Firmware could still be in progress of DMAing
6877 * payload, so don't free data buffer till after
6880 abort_iocb->iocb_flag |= LPFC_DELAY_MEM_FREE;
6882 abort_iocb->iocb_flag &= ~LPFC_DRIVER_ABORTED;
6883 abort_iocb->iocb.ulpStatus = IOSTAT_LOCAL_REJECT;
6884 abort_iocb->iocb.un.ulpWord[4] = IOERR_SLI_ABORTED;
6885 (abort_iocb->iocb_cmpl)(phba, abort_iocb, abort_iocb);
6889 lpfc_sli_release_iocbq(phba, cmdiocb);
6894 * lpfc_ignore_els_cmpl - Completion handler for aborted ELS command
6895 * @phba: Pointer to HBA context object.
6896 * @cmdiocb: Pointer to driver command iocb object.
6897 * @rspiocb: Pointer to driver response iocb object.
6899 * The function is called from SLI ring event handler with no
6900 * lock held. This function is the completion handler for ELS commands
6901 * which are aborted. The function frees memory resources used for
6902 * the aborted ELS commands.
6905 lpfc_ignore_els_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
6906 struct lpfc_iocbq *rspiocb)
6908 IOCB_t *irsp = &rspiocb->iocb;
6910 /* ELS cmd tag <ulpIoTag> completes */
6911 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
6912 "0139 Ignoring ELS cmd tag x%x completion Data: "
6914 irsp->ulpIoTag, irsp->ulpStatus,
6915 irsp->un.ulpWord[4], irsp->ulpTimeout);
6916 if (cmdiocb->iocb.ulpCommand == CMD_GEN_REQUEST64_CR)
6917 lpfc_ct_free_iocb(phba, cmdiocb);
6919 lpfc_els_free_iocb(phba, cmdiocb);
6924 * lpfc_sli_issue_abort_iotag - Abort function for a command iocb
6925 * @phba: Pointer to HBA context object.
6926 * @pring: Pointer to driver SLI ring object.
6927 * @cmdiocb: Pointer to driver command iocb object.
6929 * This function issues an abort iocb for the provided command
6930 * iocb. This function is called with hbalock held.
6931 * The function returns 0 when it fails due to memory allocation
6932 * failure or when the command iocb is an abort request.
6935 lpfc_sli_issue_abort_iotag(struct lpfc_hba *phba, struct lpfc_sli_ring *pring,
6936 struct lpfc_iocbq *cmdiocb)
6938 struct lpfc_vport *vport = cmdiocb->vport;
6939 struct lpfc_iocbq *abtsiocbp;
6940 IOCB_t *icmd = NULL;
6941 IOCB_t *iabt = NULL;
6942 int retval = IOCB_ERROR;
6945 * There are certain command types we don't want to abort. And we
6946 * don't want to abort commands that are already in the process of
6949 icmd = &cmdiocb->iocb;
6950 if (icmd->ulpCommand == CMD_ABORT_XRI_CN ||
6951 icmd->ulpCommand == CMD_CLOSE_XRI_CN ||
6952 (cmdiocb->iocb_flag & LPFC_DRIVER_ABORTED) != 0)
6955 /* If we're unloading, don't abort iocb on the ELS ring, but change the
6956 * callback so that nothing happens when it finishes.
6958 if ((vport->load_flag & FC_UNLOADING) &&
6959 (pring->ringno == LPFC_ELS_RING)) {
6960 if (cmdiocb->iocb_flag & LPFC_IO_FABRIC)
6961 cmdiocb->fabric_iocb_cmpl = lpfc_ignore_els_cmpl;
6963 cmdiocb->iocb_cmpl = lpfc_ignore_els_cmpl;
6964 goto abort_iotag_exit;
6967 /* issue ABTS for this IOCB based on iotag */
6968 abtsiocbp = __lpfc_sli_get_iocbq(phba);
6969 if (abtsiocbp == NULL)
6972 /* This signals the response to set the correct status
6973 * before calling the completion handler.
6975 cmdiocb->iocb_flag |= LPFC_DRIVER_ABORTED;
6977 iabt = &abtsiocbp->iocb;
6978 iabt->un.acxri.abortType = ABORT_TYPE_ABTS;
6979 iabt->un.acxri.abortContextTag = icmd->ulpContext;
6980 if (phba->sli_rev == LPFC_SLI_REV4)
6981 iabt->un.acxri.abortIoTag = cmdiocb->sli4_xritag;
6983 iabt->un.acxri.abortIoTag = icmd->ulpIoTag;
6985 iabt->ulpClass = icmd->ulpClass;
6987 if (phba->link_state >= LPFC_LINK_UP)
6988 iabt->ulpCommand = CMD_ABORT_XRI_CN;
6990 iabt->ulpCommand = CMD_CLOSE_XRI_CN;
6992 abtsiocbp->iocb_cmpl = lpfc_sli_abort_els_cmpl;
6994 lpfc_printf_vlog(vport, KERN_INFO, LOG_SLI,
6995 "0339 Abort xri x%x, original iotag x%x, "
6996 "abort cmd iotag x%x\n",
6997 iabt->un.acxri.abortContextTag,
6998 iabt->un.acxri.abortIoTag, abtsiocbp->iotag);
6999 retval = __lpfc_sli_issue_iocb(phba, pring->ringno, abtsiocbp, 0);
7002 __lpfc_sli_release_iocbq(phba, abtsiocbp);
7005 * Caller to this routine should check for IOCB_ERROR
7006 * and handle it properly. This routine no longer removes
7007 * iocb off txcmplq and call compl in case of IOCB_ERROR.
7013 * lpfc_sli_validate_fcp_iocb - find commands associated with a vport or LUN
7014 * @iocbq: Pointer to driver iocb object.
7015 * @vport: Pointer to driver virtual port object.
7016 * @tgt_id: SCSI ID of the target.
7017 * @lun_id: LUN ID of the scsi device.
7018 * @ctx_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST
7020 * This function acts as an iocb filter for functions which abort or count
7021 * all FCP iocbs pending on a lun/SCSI target/SCSI host. It will return
7022 * 0 if the filtering criteria is met for the given iocb and will return
7023 * 1 if the filtering criteria is not met.
7024 * If ctx_cmd == LPFC_CTX_LUN, the function returns 0 only if the
7025 * given iocb is for the SCSI device specified by vport, tgt_id and
7027 * If ctx_cmd == LPFC_CTX_TGT, the function returns 0 only if the
7028 * given iocb is for the SCSI target specified by vport and tgt_id
7030 * If ctx_cmd == LPFC_CTX_HOST, the function returns 0 only if the
7031 * given iocb is for the SCSI host associated with the given vport.
7032 * This function is called with no locks held.
7035 lpfc_sli_validate_fcp_iocb(struct lpfc_iocbq *iocbq, struct lpfc_vport *vport,
7036 uint16_t tgt_id, uint64_t lun_id,
7037 lpfc_ctx_cmd ctx_cmd)
7039 struct lpfc_scsi_buf *lpfc_cmd;
7042 if (!(iocbq->iocb_flag & LPFC_IO_FCP))
7045 if (iocbq->vport != vport)
7048 lpfc_cmd = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq);
7050 if (lpfc_cmd->pCmd == NULL)
7055 if ((lpfc_cmd->rdata->pnode) &&
7056 (lpfc_cmd->rdata->pnode->nlp_sid == tgt_id) &&
7057 (scsilun_to_int(&lpfc_cmd->fcp_cmnd->fcp_lun) == lun_id))
7061 if ((lpfc_cmd->rdata->pnode) &&
7062 (lpfc_cmd->rdata->pnode->nlp_sid == tgt_id))
7069 printk(KERN_ERR "%s: Unknown context cmd type, value %d\n",
7078 * lpfc_sli_sum_iocb - Function to count the number of FCP iocbs pending
7079 * @vport: Pointer to virtual port.
7080 * @tgt_id: SCSI ID of the target.
7081 * @lun_id: LUN ID of the scsi device.
7082 * @ctx_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST.
7084 * This function returns number of FCP commands pending for the vport.
7085 * When ctx_cmd == LPFC_CTX_LUN, the function returns number of FCP
7086 * commands pending on the vport associated with SCSI device specified
7087 * by tgt_id and lun_id parameters.
7088 * When ctx_cmd == LPFC_CTX_TGT, the function returns number of FCP
7089 * commands pending on the vport associated with SCSI target specified
7090 * by tgt_id parameter.
7091 * When ctx_cmd == LPFC_CTX_HOST, the function returns number of FCP
7092 * commands pending on the vport.
7093 * This function returns the number of iocbs which satisfy the filter.
7094 * This function is called without any lock held.
7097 lpfc_sli_sum_iocb(struct lpfc_vport *vport, uint16_t tgt_id, uint64_t lun_id,
7098 lpfc_ctx_cmd ctx_cmd)
7100 struct lpfc_hba *phba = vport->phba;
7101 struct lpfc_iocbq *iocbq;
7104 for (i = 1, sum = 0; i <= phba->sli.last_iotag; i++) {
7105 iocbq = phba->sli.iocbq_lookup[i];
7107 if (lpfc_sli_validate_fcp_iocb (iocbq, vport, tgt_id, lun_id,
7116 * lpfc_sli_abort_fcp_cmpl - Completion handler function for aborted FCP IOCBs
7117 * @phba: Pointer to HBA context object
7118 * @cmdiocb: Pointer to command iocb object.
7119 * @rspiocb: Pointer to response iocb object.
7121 * This function is called when an aborted FCP iocb completes. This
7122 * function is called by the ring event handler with no lock held.
7123 * This function frees the iocb.
7126 lpfc_sli_abort_fcp_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
7127 struct lpfc_iocbq *rspiocb)
7129 lpfc_sli_release_iocbq(phba, cmdiocb);
7134 * lpfc_sli_abort_iocb - issue abort for all commands on a host/target/LUN
7135 * @vport: Pointer to virtual port.
7136 * @pring: Pointer to driver SLI ring object.
7137 * @tgt_id: SCSI ID of the target.
7138 * @lun_id: LUN ID of the scsi device.
7139 * @abort_cmd: LPFC_CTX_LUN/LPFC_CTX_TGT/LPFC_CTX_HOST.
7141 * This function sends an abort command for every SCSI command
7142 * associated with the given virtual port pending on the ring
7143 * filtered by lpfc_sli_validate_fcp_iocb function.
7144 * When abort_cmd == LPFC_CTX_LUN, the function sends abort only to the
7145 * FCP iocbs associated with lun specified by tgt_id and lun_id
7147 * When abort_cmd == LPFC_CTX_TGT, the function sends abort only to the
7148 * FCP iocbs associated with SCSI target specified by tgt_id parameter.
7149 * When abort_cmd == LPFC_CTX_HOST, the function sends abort to all
7150 * FCP iocbs associated with virtual port.
7151 * This function returns number of iocbs it failed to abort.
7152 * This function is called with no locks held.
7155 lpfc_sli_abort_iocb(struct lpfc_vport *vport, struct lpfc_sli_ring *pring,
7156 uint16_t tgt_id, uint64_t lun_id, lpfc_ctx_cmd abort_cmd)
7158 struct lpfc_hba *phba = vport->phba;
7159 struct lpfc_iocbq *iocbq;
7160 struct lpfc_iocbq *abtsiocb;
7162 int errcnt = 0, ret_val = 0;
7165 for (i = 1; i <= phba->sli.last_iotag; i++) {
7166 iocbq = phba->sli.iocbq_lookup[i];
7168 if (lpfc_sli_validate_fcp_iocb(iocbq, vport, tgt_id, lun_id,
7172 /* issue ABTS for this IOCB based on iotag */
7173 abtsiocb = lpfc_sli_get_iocbq(phba);
7174 if (abtsiocb == NULL) {
7180 abtsiocb->iocb.un.acxri.abortType = ABORT_TYPE_ABTS;
7181 abtsiocb->iocb.un.acxri.abortContextTag = cmd->ulpContext;
7182 if (phba->sli_rev == LPFC_SLI_REV4)
7183 abtsiocb->iocb.un.acxri.abortIoTag = iocbq->sli4_xritag;
7185 abtsiocb->iocb.un.acxri.abortIoTag = cmd->ulpIoTag;
7186 abtsiocb->iocb.ulpLe = 1;
7187 abtsiocb->iocb.ulpClass = cmd->ulpClass;
7188 abtsiocb->vport = phba->pport;
7190 if (lpfc_is_link_up(phba))
7191 abtsiocb->iocb.ulpCommand = CMD_ABORT_XRI_CN;
7193 abtsiocb->iocb.ulpCommand = CMD_CLOSE_XRI_CN;
7195 /* Setup callback routine and issue the command. */
7196 abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl;
7197 ret_val = lpfc_sli_issue_iocb(phba, pring->ringno,
7199 if (ret_val == IOCB_ERROR) {
7200 lpfc_sli_release_iocbq(phba, abtsiocb);
7210 * lpfc_sli_wake_iocb_wait - lpfc_sli_issue_iocb_wait's completion handler
7211 * @phba: Pointer to HBA context object.
7212 * @cmdiocbq: Pointer to command iocb.
7213 * @rspiocbq: Pointer to response iocb.
7215 * This function is the completion handler for iocbs issued using
7216 * lpfc_sli_issue_iocb_wait function. This function is called by the
7217 * ring event handler function without any lock held. This function
7218 * can be called from both worker thread context and interrupt
7219 * context. This function also can be called from other thread which
7220 * cleans up the SLI layer objects.
7221 * This function copy the contents of the response iocb to the
7222 * response iocb memory object provided by the caller of
7223 * lpfc_sli_issue_iocb_wait and then wakes up the thread which
7224 * sleeps for the iocb completion.
7227 lpfc_sli_wake_iocb_wait(struct lpfc_hba *phba,
7228 struct lpfc_iocbq *cmdiocbq,
7229 struct lpfc_iocbq *rspiocbq)
7231 wait_queue_head_t *pdone_q;
7232 unsigned long iflags;
7234 spin_lock_irqsave(&phba->hbalock, iflags);
7235 cmdiocbq->iocb_flag |= LPFC_IO_WAKE;
7236 if (cmdiocbq->context2 && rspiocbq)
7237 memcpy(&((struct lpfc_iocbq *)cmdiocbq->context2)->iocb,
7238 &rspiocbq->iocb, sizeof(IOCB_t));
7240 pdone_q = cmdiocbq->context_un.wait_queue;
7243 spin_unlock_irqrestore(&phba->hbalock, iflags);
7248 * lpfc_sli_issue_iocb_wait - Synchronous function to issue iocb commands
7249 * @phba: Pointer to HBA context object..
7250 * @pring: Pointer to sli ring.
7251 * @piocb: Pointer to command iocb.
7252 * @prspiocbq: Pointer to response iocb.
7253 * @timeout: Timeout in number of seconds.
7255 * This function issues the iocb to firmware and waits for the
7256 * iocb to complete. If the iocb command is not
7257 * completed within timeout seconds, it returns IOCB_TIMEDOUT.
7258 * Caller should not free the iocb resources if this function
7259 * returns IOCB_TIMEDOUT.
7260 * The function waits for the iocb completion using an
7261 * non-interruptible wait.
7262 * This function will sleep while waiting for iocb completion.
7263 * So, this function should not be called from any context which
7264 * does not allow sleeping. Due to the same reason, this function
7265 * cannot be called with interrupt disabled.
7266 * This function assumes that the iocb completions occur while
7267 * this function sleep. So, this function cannot be called from
7268 * the thread which process iocb completion for this ring.
7269 * This function clears the iocb_flag of the iocb object before
7270 * issuing the iocb and the iocb completion handler sets this
7271 * flag and wakes this thread when the iocb completes.
7272 * The contents of the response iocb will be copied to prspiocbq
7273 * by the completion handler when the command completes.
7274 * This function returns IOCB_SUCCESS when success.
7275 * This function is called with no lock held.
7278 lpfc_sli_issue_iocb_wait(struct lpfc_hba *phba,
7279 uint32_t ring_number,
7280 struct lpfc_iocbq *piocb,
7281 struct lpfc_iocbq *prspiocbq,
7284 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q);
7285 long timeleft, timeout_req = 0;
7286 int retval = IOCB_SUCCESS;
7290 * If the caller has provided a response iocbq buffer, then context2
7291 * is NULL or its an error.
7294 if (piocb->context2)
7296 piocb->context2 = prspiocbq;
7299 piocb->iocb_cmpl = lpfc_sli_wake_iocb_wait;
7300 piocb->context_un.wait_queue = &done_q;
7301 piocb->iocb_flag &= ~LPFC_IO_WAKE;
7303 if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
7304 creg_val = readl(phba->HCregaddr);
7305 creg_val |= (HC_R0INT_ENA << LPFC_FCP_RING);
7306 writel(creg_val, phba->HCregaddr);
7307 readl(phba->HCregaddr); /* flush */
7310 retval = lpfc_sli_issue_iocb(phba, ring_number, piocb, 0);
7311 if (retval == IOCB_SUCCESS) {
7312 timeout_req = timeout * HZ;
7313 timeleft = wait_event_timeout(done_q,
7314 piocb->iocb_flag & LPFC_IO_WAKE,
7317 if (piocb->iocb_flag & LPFC_IO_WAKE) {
7318 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
7319 "0331 IOCB wake signaled\n");
7320 } else if (timeleft == 0) {
7321 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
7322 "0338 IOCB wait timeout error - no "
7323 "wake response Data x%x\n", timeout);
7324 retval = IOCB_TIMEDOUT;
7326 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
7327 "0330 IOCB wake NOT set, "
7329 timeout, (timeleft / jiffies));
7330 retval = IOCB_TIMEDOUT;
7333 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
7334 "0332 IOCB wait issue failed, Data x%x\n",
7336 retval = IOCB_ERROR;
7339 if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
7340 creg_val = readl(phba->HCregaddr);
7341 creg_val &= ~(HC_R0INT_ENA << LPFC_FCP_RING);
7342 writel(creg_val, phba->HCregaddr);
7343 readl(phba->HCregaddr); /* flush */
7347 piocb->context2 = NULL;
7349 piocb->context_un.wait_queue = NULL;
7350 piocb->iocb_cmpl = NULL;
7355 * lpfc_sli_issue_mbox_wait - Synchronous function to issue mailbox
7356 * @phba: Pointer to HBA context object.
7357 * @pmboxq: Pointer to driver mailbox object.
7358 * @timeout: Timeout in number of seconds.
7360 * This function issues the mailbox to firmware and waits for the
7361 * mailbox command to complete. If the mailbox command is not
7362 * completed within timeout seconds, it returns MBX_TIMEOUT.
7363 * The function waits for the mailbox completion using an
7364 * interruptible wait. If the thread is woken up due to a
7365 * signal, MBX_TIMEOUT error is returned to the caller. Caller
7366 * should not free the mailbox resources, if this function returns
7368 * This function will sleep while waiting for mailbox completion.
7369 * So, this function should not be called from any context which
7370 * does not allow sleeping. Due to the same reason, this function
7371 * cannot be called with interrupt disabled.
7372 * This function assumes that the mailbox completion occurs while
7373 * this function sleep. So, this function cannot be called from
7374 * the worker thread which processes mailbox completion.
7375 * This function is called in the context of HBA management
7377 * This function returns MBX_SUCCESS when successful.
7378 * This function is called with no lock held.
7381 lpfc_sli_issue_mbox_wait(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq,
7384 DECLARE_WAIT_QUEUE_HEAD_ONSTACK(done_q);
7388 /* The caller must leave context1 empty. */
7389 if (pmboxq->context1)
7390 return MBX_NOT_FINISHED;
7392 pmboxq->mbox_flag &= ~LPFC_MBX_WAKE;
7393 /* setup wake call as IOCB callback */
7394 pmboxq->mbox_cmpl = lpfc_sli_wake_mbox_wait;
7395 /* setup context field to pass wait_queue pointer to wake function */
7396 pmboxq->context1 = &done_q;
7398 /* now issue the command */
7399 retval = lpfc_sli_issue_mbox(phba, pmboxq, MBX_NOWAIT);
7401 if (retval == MBX_BUSY || retval == MBX_SUCCESS) {
7402 wait_event_interruptible_timeout(done_q,
7403 pmboxq->mbox_flag & LPFC_MBX_WAKE,
7406 spin_lock_irqsave(&phba->hbalock, flag);
7407 pmboxq->context1 = NULL;
7409 * if LPFC_MBX_WAKE flag is set the mailbox is completed
7410 * else do not free the resources.
7412 if (pmboxq->mbox_flag & LPFC_MBX_WAKE)
7413 retval = MBX_SUCCESS;
7415 retval = MBX_TIMEOUT;
7416 pmboxq->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
7418 spin_unlock_irqrestore(&phba->hbalock, flag);
7425 * lpfc_sli_mbox_sys_shutdown - shutdown mailbox command sub-system
7426 * @phba: Pointer to HBA context.
7428 * This function is called to shutdown the driver's mailbox sub-system.
7429 * It first marks the mailbox sub-system is in a block state to prevent
7430 * the asynchronous mailbox command from issued off the pending mailbox
7431 * command queue. If the mailbox command sub-system shutdown is due to
7432 * HBA error conditions such as EEH or ERATT, this routine shall invoke
7433 * the mailbox sub-system flush routine to forcefully bring down the
7434 * mailbox sub-system. Otherwise, if it is due to normal condition (such
7435 * as with offline or HBA function reset), this routine will wait for the
7436 * outstanding mailbox command to complete before invoking the mailbox
7437 * sub-system flush routine to gracefully bring down mailbox sub-system.
7440 lpfc_sli_mbox_sys_shutdown(struct lpfc_hba *phba)
7442 struct lpfc_sli *psli = &phba->sli;
7443 uint8_t actcmd = MBX_HEARTBEAT;
7444 unsigned long timeout;
7446 spin_lock_irq(&phba->hbalock);
7447 psli->sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
7448 spin_unlock_irq(&phba->hbalock);
7450 if (psli->sli_flag & LPFC_SLI_ACTIVE) {
7451 spin_lock_irq(&phba->hbalock);
7452 if (phba->sli.mbox_active)
7453 actcmd = phba->sli.mbox_active->u.mb.mbxCommand;
7454 spin_unlock_irq(&phba->hbalock);
7455 /* Determine how long we might wait for the active mailbox
7456 * command to be gracefully completed by firmware.
7458 timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, actcmd) *
7460 while (phba->sli.mbox_active) {
7461 /* Check active mailbox complete status every 2ms */
7463 if (time_after(jiffies, timeout))
7464 /* Timeout, let the mailbox flush routine to
7465 * forcefully release active mailbox command
7470 lpfc_sli_mbox_sys_flush(phba);
7474 * lpfc_sli_eratt_read - read sli-3 error attention events
7475 * @phba: Pointer to HBA context.
7477 * This function is called to read the SLI3 device error attention registers
7478 * for possible error attention events. The caller must hold the hostlock
7479 * with spin_lock_irq().
7481 * This fucntion returns 1 when there is Error Attention in the Host Attention
7482 * Register and returns 0 otherwise.
7485 lpfc_sli_eratt_read(struct lpfc_hba *phba)
7489 /* Read chip Host Attention (HA) register */
7490 ha_copy = readl(phba->HAregaddr);
7491 if (ha_copy & HA_ERATT) {
7492 /* Read host status register to retrieve error event */
7493 lpfc_sli_read_hs(phba);
7495 /* Check if there is a deferred error condition is active */
7496 if ((HS_FFER1 & phba->work_hs) &&
7497 ((HS_FFER2 | HS_FFER3 | HS_FFER4 | HS_FFER5 |
7498 HS_FFER6 | HS_FFER7) & phba->work_hs)) {
7499 spin_lock_irq(&phba->hbalock);
7500 phba->hba_flag |= DEFER_ERATT;
7501 spin_unlock_irq(&phba->hbalock);
7502 /* Clear all interrupt enable conditions */
7503 writel(0, phba->HCregaddr);
7504 readl(phba->HCregaddr);
7507 /* Set the driver HA work bitmap */
7508 spin_lock_irq(&phba->hbalock);
7509 phba->work_ha |= HA_ERATT;
7510 /* Indicate polling handles this ERATT */
7511 phba->hba_flag |= HBA_ERATT_HANDLED;
7512 spin_unlock_irq(&phba->hbalock);
7519 * lpfc_sli4_eratt_read - read sli-4 error attention events
7520 * @phba: Pointer to HBA context.
7522 * This function is called to read the SLI4 device error attention registers
7523 * for possible error attention events. The caller must hold the hostlock
7524 * with spin_lock_irq().
7526 * This fucntion returns 1 when there is Error Attention in the Host Attention
7527 * Register and returns 0 otherwise.
7530 lpfc_sli4_eratt_read(struct lpfc_hba *phba)
7532 uint32_t uerr_sta_hi, uerr_sta_lo;
7533 uint32_t onlnreg0, onlnreg1;
7535 /* For now, use the SLI4 device internal unrecoverable error
7536 * registers for error attention. This can be changed later.
7538 onlnreg0 = readl(phba->sli4_hba.ONLINE0regaddr);
7539 onlnreg1 = readl(phba->sli4_hba.ONLINE1regaddr);
7540 if ((onlnreg0 != LPFC_ONLINE_NERR) || (onlnreg1 != LPFC_ONLINE_NERR)) {
7541 uerr_sta_lo = readl(phba->sli4_hba.UERRLOregaddr);
7542 uerr_sta_hi = readl(phba->sli4_hba.UERRHIregaddr);
7543 if (uerr_sta_lo || uerr_sta_hi) {
7544 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7545 "1423 HBA Unrecoverable error: "
7546 "uerr_lo_reg=0x%x, uerr_hi_reg=0x%x, "
7547 "online0_reg=0x%x, online1_reg=0x%x\n",
7548 uerr_sta_lo, uerr_sta_hi,
7549 onlnreg0, onlnreg1);
7550 /* TEMP: as the driver error recover logic is not
7551 * fully developed, we just log the error message
7552 * and the device error attention action is now
7553 * temporarily disabled.
7556 phba->work_status[0] = uerr_sta_lo;
7557 phba->work_status[1] = uerr_sta_hi;
7558 spin_lock_irq(&phba->hbalock);
7559 /* Set the driver HA work bitmap */
7560 phba->work_ha |= HA_ERATT;
7561 /* Indicate polling handles this ERATT */
7562 phba->hba_flag |= HBA_ERATT_HANDLED;
7563 spin_unlock_irq(&phba->hbalock);
7571 * lpfc_sli_check_eratt - check error attention events
7572 * @phba: Pointer to HBA context.
7574 * This function is called from timer soft interrupt context to check HBA's
7575 * error attention register bit for error attention events.
7577 * This fucntion returns 1 when there is Error Attention in the Host Attention
7578 * Register and returns 0 otherwise.
7581 lpfc_sli_check_eratt(struct lpfc_hba *phba)
7585 /* If somebody is waiting to handle an eratt, don't process it
7586 * here. The brdkill function will do this.
7588 if (phba->link_flag & LS_IGNORE_ERATT)
7591 /* Check if interrupt handler handles this ERATT */
7592 spin_lock_irq(&phba->hbalock);
7593 if (phba->hba_flag & HBA_ERATT_HANDLED) {
7594 /* Interrupt handler has handled ERATT */
7595 spin_unlock_irq(&phba->hbalock);
7600 * If there is deferred error attention, do not check for error
7603 if (unlikely(phba->hba_flag & DEFER_ERATT)) {
7604 spin_unlock_irq(&phba->hbalock);
7608 /* If PCI channel is offline, don't process it */
7609 if (unlikely(pci_channel_offline(phba->pcidev))) {
7610 spin_unlock_irq(&phba->hbalock);
7614 switch (phba->sli_rev) {
7617 /* Read chip Host Attention (HA) register */
7618 ha_copy = lpfc_sli_eratt_read(phba);
7621 /* Read devcie Uncoverable Error (UERR) registers */
7622 ha_copy = lpfc_sli4_eratt_read(phba);
7625 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7626 "0299 Invalid SLI revision (%d)\n",
7631 spin_unlock_irq(&phba->hbalock);
7637 * lpfc_intr_state_check - Check device state for interrupt handling
7638 * @phba: Pointer to HBA context.
7640 * This inline routine checks whether a device or its PCI slot is in a state
7641 * that the interrupt should be handled.
7643 * This function returns 0 if the device or the PCI slot is in a state that
7644 * interrupt should be handled, otherwise -EIO.
7647 lpfc_intr_state_check(struct lpfc_hba *phba)
7649 /* If the pci channel is offline, ignore all the interrupts */
7650 if (unlikely(pci_channel_offline(phba->pcidev)))
7653 /* Update device level interrupt statistics */
7654 phba->sli.slistat.sli_intr++;
7656 /* Ignore all interrupts during initialization. */
7657 if (unlikely(phba->link_state < LPFC_LINK_DOWN))
7664 * lpfc_sli_sp_intr_handler - Slow-path interrupt handler to SLI-3 device
7665 * @irq: Interrupt number.
7666 * @dev_id: The device context pointer.
7668 * This function is directly called from the PCI layer as an interrupt
7669 * service routine when device with SLI-3 interface spec is enabled with
7670 * MSI-X multi-message interrupt mode and there are slow-path events in
7671 * the HBA. However, when the device is enabled with either MSI or Pin-IRQ
7672 * interrupt mode, this function is called as part of the device-level
7673 * interrupt handler. When the PCI slot is in error recovery or the HBA
7674 * is undergoing initialization, the interrupt handler will not process
7675 * the interrupt. The link attention and ELS ring attention events are
7676 * handled by the worker thread. The interrupt handler signals the worker
7677 * thread and returns for these events. This function is called without
7678 * any lock held. It gets the hbalock to access and update SLI data
7681 * This function returns IRQ_HANDLED when interrupt is handled else it
7685 lpfc_sli_sp_intr_handler(int irq, void *dev_id)
7687 struct lpfc_hba *phba;
7689 uint32_t work_ha_copy;
7690 unsigned long status;
7691 unsigned long iflag;
7694 MAILBOX_t *mbox, *pmbox;
7695 struct lpfc_vport *vport;
7696 struct lpfc_nodelist *ndlp;
7697 struct lpfc_dmabuf *mp;
7702 * Get the driver's phba structure from the dev_id and
7703 * assume the HBA is not interrupting.
7705 phba = (struct lpfc_hba *)dev_id;
7707 if (unlikely(!phba))
7711 * Stuff needs to be attented to when this function is invoked as an
7712 * individual interrupt handler in MSI-X multi-message interrupt mode
7714 if (phba->intr_type == MSIX) {
7715 /* Check device state for handling interrupt */
7716 if (lpfc_intr_state_check(phba))
7718 /* Need to read HA REG for slow-path events */
7719 spin_lock_irqsave(&phba->hbalock, iflag);
7720 ha_copy = readl(phba->HAregaddr);
7721 /* If somebody is waiting to handle an eratt don't process it
7722 * here. The brdkill function will do this.
7724 if (phba->link_flag & LS_IGNORE_ERATT)
7725 ha_copy &= ~HA_ERATT;
7726 /* Check the need for handling ERATT in interrupt handler */
7727 if (ha_copy & HA_ERATT) {
7728 if (phba->hba_flag & HBA_ERATT_HANDLED)
7729 /* ERATT polling has handled ERATT */
7730 ha_copy &= ~HA_ERATT;
7732 /* Indicate interrupt handler handles ERATT */
7733 phba->hba_flag |= HBA_ERATT_HANDLED;
7737 * If there is deferred error attention, do not check for any
7740 if (unlikely(phba->hba_flag & DEFER_ERATT)) {
7741 spin_unlock_irqrestore(&phba->hbalock, iflag);
7745 /* Clear up only attention source related to slow-path */
7746 writel((ha_copy & (HA_MBATT | HA_R2_CLR_MSK)),
7748 readl(phba->HAregaddr); /* flush */
7749 spin_unlock_irqrestore(&phba->hbalock, iflag);
7751 ha_copy = phba->ha_copy;
7753 work_ha_copy = ha_copy & phba->work_ha_mask;
7756 if (work_ha_copy & HA_LATT) {
7757 if (phba->sli.sli_flag & LPFC_PROCESS_LA) {
7759 * Turn off Link Attention interrupts
7760 * until CLEAR_LA done
7762 spin_lock_irqsave(&phba->hbalock, iflag);
7763 phba->sli.sli_flag &= ~LPFC_PROCESS_LA;
7764 control = readl(phba->HCregaddr);
7765 control &= ~HC_LAINT_ENA;
7766 writel(control, phba->HCregaddr);
7767 readl(phba->HCregaddr); /* flush */
7768 spin_unlock_irqrestore(&phba->hbalock, iflag);
7771 work_ha_copy &= ~HA_LATT;
7774 if (work_ha_copy & ~(HA_ERATT | HA_MBATT | HA_LATT)) {
7776 * Turn off Slow Rings interrupts, LPFC_ELS_RING is
7777 * the only slow ring.
7779 status = (work_ha_copy &
7780 (HA_RXMASK << (4*LPFC_ELS_RING)));
7781 status >>= (4*LPFC_ELS_RING);
7782 if (status & HA_RXMASK) {
7783 spin_lock_irqsave(&phba->hbalock, iflag);
7784 control = readl(phba->HCregaddr);
7786 lpfc_debugfs_slow_ring_trc(phba,
7787 "ISR slow ring: ctl:x%x stat:x%x isrcnt:x%x",
7789 (uint32_t)phba->sli.slistat.sli_intr);
7791 if (control & (HC_R0INT_ENA << LPFC_ELS_RING)) {
7792 lpfc_debugfs_slow_ring_trc(phba,
7794 "pwork:x%x hawork:x%x wait:x%x",
7795 phba->work_ha, work_ha_copy,
7796 (uint32_t)((unsigned long)
7797 &phba->work_waitq));
7800 ~(HC_R0INT_ENA << LPFC_ELS_RING);
7801 writel(control, phba->HCregaddr);
7802 readl(phba->HCregaddr); /* flush */
7805 lpfc_debugfs_slow_ring_trc(phba,
7806 "ISR slow ring: pwork:"
7807 "x%x hawork:x%x wait:x%x",
7808 phba->work_ha, work_ha_copy,
7809 (uint32_t)((unsigned long)
7810 &phba->work_waitq));
7812 spin_unlock_irqrestore(&phba->hbalock, iflag);
7815 spin_lock_irqsave(&phba->hbalock, iflag);
7816 if (work_ha_copy & HA_ERATT) {
7817 lpfc_sli_read_hs(phba);
7819 * Check if there is a deferred error condition
7822 if ((HS_FFER1 & phba->work_hs) &&
7823 ((HS_FFER2 | HS_FFER3 | HS_FFER4 | HS_FFER5 |
7824 HS_FFER6 | HS_FFER7) & phba->work_hs)) {
7825 phba->hba_flag |= DEFER_ERATT;
7826 /* Clear all interrupt enable conditions */
7827 writel(0, phba->HCregaddr);
7828 readl(phba->HCregaddr);
7832 if ((work_ha_copy & HA_MBATT) && (phba->sli.mbox_active)) {
7833 pmb = phba->sli.mbox_active;
7838 /* First check out the status word */
7839 lpfc_sli_pcimem_bcopy(mbox, pmbox, sizeof(uint32_t));
7840 if (pmbox->mbxOwner != OWN_HOST) {
7841 spin_unlock_irqrestore(&phba->hbalock, iflag);
7843 * Stray Mailbox Interrupt, mbxCommand <cmd>
7844 * mbxStatus <status>
7846 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX |
7848 "(%d):0304 Stray Mailbox "
7849 "Interrupt mbxCommand x%x "
7851 (vport ? vport->vpi : 0),
7854 /* clear mailbox attention bit */
7855 work_ha_copy &= ~HA_MBATT;
7857 phba->sli.mbox_active = NULL;
7858 spin_unlock_irqrestore(&phba->hbalock, iflag);
7859 phba->last_completion_time = jiffies;
7860 del_timer(&phba->sli.mbox_tmo);
7861 if (pmb->mbox_cmpl) {
7862 lpfc_sli_pcimem_bcopy(mbox, pmbox,
7865 if (pmb->mbox_flag & LPFC_MBX_IMED_UNREG) {
7866 pmb->mbox_flag &= ~LPFC_MBX_IMED_UNREG;
7868 lpfc_debugfs_disc_trc(vport,
7869 LPFC_DISC_TRC_MBOX_VPORT,
7871 "status:x%x rpi:x%x",
7872 (uint32_t)pmbox->mbxStatus,
7873 pmbox->un.varWords[0], 0);
7875 if (!pmbox->mbxStatus) {
7876 mp = (struct lpfc_dmabuf *)
7878 ndlp = (struct lpfc_nodelist *)
7881 /* Reg_LOGIN of dflt RPI was
7882 * successful. new lets get
7883 * rid of the RPI using the
7886 lpfc_unreg_login(phba,
7888 pmbox->un.varWords[0],
7891 lpfc_mbx_cmpl_dflt_rpi;
7893 pmb->context2 = ndlp;
7895 rc = lpfc_sli_issue_mbox(phba,
7899 lpfc_printf_log(phba,
7902 "0350 rc should have"
7904 if (rc != MBX_NOT_FINISHED)
7905 goto send_current_mbox;
7909 &phba->pport->work_port_lock,
7911 phba->pport->work_port_events &=
7913 spin_unlock_irqrestore(
7914 &phba->pport->work_port_lock,
7916 lpfc_mbox_cmpl_put(phba, pmb);
7919 spin_unlock_irqrestore(&phba->hbalock, iflag);
7921 if ((work_ha_copy & HA_MBATT) &&
7922 (phba->sli.mbox_active == NULL)) {
7924 /* Process next mailbox command if there is one */
7926 rc = lpfc_sli_issue_mbox(phba, NULL,
7928 } while (rc == MBX_NOT_FINISHED);
7929 if (rc != MBX_SUCCESS)
7930 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX |
7931 LOG_SLI, "0349 rc should be "
7935 spin_lock_irqsave(&phba->hbalock, iflag);
7936 phba->work_ha |= work_ha_copy;
7937 spin_unlock_irqrestore(&phba->hbalock, iflag);
7938 lpfc_worker_wake_up(phba);
7942 } /* lpfc_sli_sp_intr_handler */
7945 * lpfc_sli_fp_intr_handler - Fast-path interrupt handler to SLI-3 device.
7946 * @irq: Interrupt number.
7947 * @dev_id: The device context pointer.
7949 * This function is directly called from the PCI layer as an interrupt
7950 * service routine when device with SLI-3 interface spec is enabled with
7951 * MSI-X multi-message interrupt mode and there is a fast-path FCP IOCB
7952 * ring event in the HBA. However, when the device is enabled with either
7953 * MSI or Pin-IRQ interrupt mode, this function is called as part of the
7954 * device-level interrupt handler. When the PCI slot is in error recovery
7955 * or the HBA is undergoing initialization, the interrupt handler will not
7956 * process the interrupt. The SCSI FCP fast-path ring event are handled in
7957 * the intrrupt context. This function is called without any lock held.
7958 * It gets the hbalock to access and update SLI data structures.
7960 * This function returns IRQ_HANDLED when interrupt is handled else it
7964 lpfc_sli_fp_intr_handler(int irq, void *dev_id)
7966 struct lpfc_hba *phba;
7968 unsigned long status;
7969 unsigned long iflag;
7971 /* Get the driver's phba structure from the dev_id and
7972 * assume the HBA is not interrupting.
7974 phba = (struct lpfc_hba *) dev_id;
7976 if (unlikely(!phba))
7980 * Stuff needs to be attented to when this function is invoked as an
7981 * individual interrupt handler in MSI-X multi-message interrupt mode
7983 if (phba->intr_type == MSIX) {
7984 /* Check device state for handling interrupt */
7985 if (lpfc_intr_state_check(phba))
7987 /* Need to read HA REG for FCP ring and other ring events */
7988 ha_copy = readl(phba->HAregaddr);
7989 /* Clear up only attention source related to fast-path */
7990 spin_lock_irqsave(&phba->hbalock, iflag);
7992 * If there is deferred error attention, do not check for
7995 if (unlikely(phba->hba_flag & DEFER_ERATT)) {
7996 spin_unlock_irqrestore(&phba->hbalock, iflag);
7999 writel((ha_copy & (HA_R0_CLR_MSK | HA_R1_CLR_MSK)),
8001 readl(phba->HAregaddr); /* flush */
8002 spin_unlock_irqrestore(&phba->hbalock, iflag);
8004 ha_copy = phba->ha_copy;
8007 * Process all events on FCP ring. Take the optimized path for FCP IO.
8009 ha_copy &= ~(phba->work_ha_mask);
8011 status = (ha_copy & (HA_RXMASK << (4*LPFC_FCP_RING)));
8012 status >>= (4*LPFC_FCP_RING);
8013 if (status & HA_RXMASK)
8014 lpfc_sli_handle_fast_ring_event(phba,
8015 &phba->sli.ring[LPFC_FCP_RING],
8018 if (phba->cfg_multi_ring_support == 2) {
8020 * Process all events on extra ring. Take the optimized path
8021 * for extra ring IO.
8023 status = (ha_copy & (HA_RXMASK << (4*LPFC_EXTRA_RING)));
8024 status >>= (4*LPFC_EXTRA_RING);
8025 if (status & HA_RXMASK) {
8026 lpfc_sli_handle_fast_ring_event(phba,
8027 &phba->sli.ring[LPFC_EXTRA_RING],
8032 } /* lpfc_sli_fp_intr_handler */
8035 * lpfc_sli_intr_handler - Device-level interrupt handler to SLI-3 device
8036 * @irq: Interrupt number.
8037 * @dev_id: The device context pointer.
8039 * This function is the HBA device-level interrupt handler to device with
8040 * SLI-3 interface spec, called from the PCI layer when either MSI or
8041 * Pin-IRQ interrupt mode is enabled and there is an event in the HBA which
8042 * requires driver attention. This function invokes the slow-path interrupt
8043 * attention handling function and fast-path interrupt attention handling
8044 * function in turn to process the relevant HBA attention events. This
8045 * function is called without any lock held. It gets the hbalock to access
8046 * and update SLI data structures.
8048 * This function returns IRQ_HANDLED when interrupt is handled, else it
8052 lpfc_sli_intr_handler(int irq, void *dev_id)
8054 struct lpfc_hba *phba;
8055 irqreturn_t sp_irq_rc, fp_irq_rc;
8056 unsigned long status1, status2;
8059 * Get the driver's phba structure from the dev_id and
8060 * assume the HBA is not interrupting.
8062 phba = (struct lpfc_hba *) dev_id;
8064 if (unlikely(!phba))
8067 /* Check device state for handling interrupt */
8068 if (lpfc_intr_state_check(phba))
8071 spin_lock(&phba->hbalock);
8072 phba->ha_copy = readl(phba->HAregaddr);
8073 if (unlikely(!phba->ha_copy)) {
8074 spin_unlock(&phba->hbalock);
8076 } else if (phba->ha_copy & HA_ERATT) {
8077 if (phba->hba_flag & HBA_ERATT_HANDLED)
8078 /* ERATT polling has handled ERATT */
8079 phba->ha_copy &= ~HA_ERATT;
8081 /* Indicate interrupt handler handles ERATT */
8082 phba->hba_flag |= HBA_ERATT_HANDLED;
8086 * If there is deferred error attention, do not check for any interrupt.
8088 if (unlikely(phba->hba_flag & DEFER_ERATT)) {
8089 spin_unlock_irq(&phba->hbalock);
8093 /* Clear attention sources except link and error attentions */
8094 writel((phba->ha_copy & ~(HA_LATT | HA_ERATT)), phba->HAregaddr);
8095 readl(phba->HAregaddr); /* flush */
8096 spin_unlock(&phba->hbalock);
8099 * Invokes slow-path host attention interrupt handling as appropriate.
8102 /* status of events with mailbox and link attention */
8103 status1 = phba->ha_copy & (HA_MBATT | HA_LATT | HA_ERATT);
8105 /* status of events with ELS ring */
8106 status2 = (phba->ha_copy & (HA_RXMASK << (4*LPFC_ELS_RING)));
8107 status2 >>= (4*LPFC_ELS_RING);
8109 if (status1 || (status2 & HA_RXMASK))
8110 sp_irq_rc = lpfc_sli_sp_intr_handler(irq, dev_id);
8112 sp_irq_rc = IRQ_NONE;
8115 * Invoke fast-path host attention interrupt handling as appropriate.
8118 /* status of events with FCP ring */
8119 status1 = (phba->ha_copy & (HA_RXMASK << (4*LPFC_FCP_RING)));
8120 status1 >>= (4*LPFC_FCP_RING);
8122 /* status of events with extra ring */
8123 if (phba->cfg_multi_ring_support == 2) {
8124 status2 = (phba->ha_copy & (HA_RXMASK << (4*LPFC_EXTRA_RING)));
8125 status2 >>= (4*LPFC_EXTRA_RING);
8129 if ((status1 & HA_RXMASK) || (status2 & HA_RXMASK))
8130 fp_irq_rc = lpfc_sli_fp_intr_handler(irq, dev_id);
8132 fp_irq_rc = IRQ_NONE;
8134 /* Return device-level interrupt handling status */
8135 return (sp_irq_rc == IRQ_HANDLED) ? sp_irq_rc : fp_irq_rc;
8136 } /* lpfc_sli_intr_handler */
8139 * lpfc_sli4_fcp_xri_abort_event_proc - Process fcp xri abort event
8140 * @phba: pointer to lpfc hba data structure.
8142 * This routine is invoked by the worker thread to process all the pending
8143 * SLI4 FCP abort XRI events.
8145 void lpfc_sli4_fcp_xri_abort_event_proc(struct lpfc_hba *phba)
8147 struct lpfc_cq_event *cq_event;
8149 /* First, declare the fcp xri abort event has been handled */
8150 spin_lock_irq(&phba->hbalock);
8151 phba->hba_flag &= ~FCP_XRI_ABORT_EVENT;
8152 spin_unlock_irq(&phba->hbalock);
8153 /* Now, handle all the fcp xri abort events */
8154 while (!list_empty(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue)) {
8155 /* Get the first event from the head of the event queue */
8156 spin_lock_irq(&phba->hbalock);
8157 list_remove_head(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue,
8158 cq_event, struct lpfc_cq_event, list);
8159 spin_unlock_irq(&phba->hbalock);
8160 /* Notify aborted XRI for FCP work queue */
8161 lpfc_sli4_fcp_xri_aborted(phba, &cq_event->cqe.wcqe_axri);
8162 /* Free the event processed back to the free pool */
8163 lpfc_sli4_cq_event_release(phba, cq_event);
8168 * lpfc_sli4_els_xri_abort_event_proc - Process els xri abort event
8169 * @phba: pointer to lpfc hba data structure.
8171 * This routine is invoked by the worker thread to process all the pending
8172 * SLI4 els abort xri events.
8174 void lpfc_sli4_els_xri_abort_event_proc(struct lpfc_hba *phba)
8176 struct lpfc_cq_event *cq_event;
8178 /* First, declare the els xri abort event has been handled */
8179 spin_lock_irq(&phba->hbalock);
8180 phba->hba_flag &= ~ELS_XRI_ABORT_EVENT;
8181 spin_unlock_irq(&phba->hbalock);
8182 /* Now, handle all the els xri abort events */
8183 while (!list_empty(&phba->sli4_hba.sp_els_xri_aborted_work_queue)) {
8184 /* Get the first event from the head of the event queue */
8185 spin_lock_irq(&phba->hbalock);
8186 list_remove_head(&phba->sli4_hba.sp_els_xri_aborted_work_queue,
8187 cq_event, struct lpfc_cq_event, list);
8188 spin_unlock_irq(&phba->hbalock);
8189 /* Notify aborted XRI for ELS work queue */
8190 lpfc_sli4_els_xri_aborted(phba, &cq_event->cqe.wcqe_axri);
8191 /* Free the event processed back to the free pool */
8192 lpfc_sli4_cq_event_release(phba, cq_event);
8197 lpfc_sli4_iocb_param_transfer(struct lpfc_iocbq *pIocbIn,
8198 struct lpfc_iocbq *pIocbOut,
8199 struct lpfc_wcqe_complete *wcqe)
8201 size_t offset = offsetof(struct lpfc_iocbq, iocb);
8203 memcpy((char *)pIocbIn + offset, (char *)pIocbOut + offset,
8204 sizeof(struct lpfc_iocbq) - offset);
8205 memset(&pIocbIn->sli4_info, 0,
8206 sizeof(struct lpfc_sli4_rspiocb_info));
8207 /* Map WCQE parameters into irspiocb parameters */
8208 pIocbIn->iocb.ulpStatus = bf_get(lpfc_wcqe_c_status, wcqe);
8209 if (pIocbOut->iocb_flag & LPFC_IO_FCP)
8210 if (pIocbIn->iocb.ulpStatus == IOSTAT_FCP_RSP_ERROR)
8211 pIocbIn->iocb.un.fcpi.fcpi_parm =
8212 pIocbOut->iocb.un.fcpi.fcpi_parm -
8213 wcqe->total_data_placed;
8215 pIocbIn->iocb.un.ulpWord[4] = wcqe->parameter;
8217 pIocbIn->iocb.un.ulpWord[4] = wcqe->parameter;
8218 /* Load in additional WCQE parameters */
8219 pIocbIn->sli4_info.hw_status = bf_get(lpfc_wcqe_c_hw_status, wcqe);
8220 pIocbIn->sli4_info.bfield = 0;
8221 if (bf_get(lpfc_wcqe_c_xb, wcqe))
8222 pIocbIn->sli4_info.bfield |= LPFC_XB;
8223 if (bf_get(lpfc_wcqe_c_pv, wcqe)) {
8224 pIocbIn->sli4_info.bfield |= LPFC_PV;
8225 pIocbIn->sli4_info.priority =
8226 bf_get(lpfc_wcqe_c_priority, wcqe);
8231 * lpfc_sli4_sp_handle_async_event - Handle an asynchroous event
8232 * @phba: Pointer to HBA context object.
8233 * @cqe: Pointer to mailbox completion queue entry.
8235 * This routine process a mailbox completion queue entry with asynchrous
8238 * Return: true if work posted to worker thread, otherwise false.
8241 lpfc_sli4_sp_handle_async_event(struct lpfc_hba *phba, struct lpfc_mcqe *mcqe)
8243 struct lpfc_cq_event *cq_event;
8244 unsigned long iflags;
8246 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
8247 "0392 Async Event: word0:x%x, word1:x%x, "
8248 "word2:x%x, word3:x%x\n", mcqe->word0,
8249 mcqe->mcqe_tag0, mcqe->mcqe_tag1, mcqe->trailer);
8251 /* Allocate a new internal CQ_EVENT entry */
8252 cq_event = lpfc_sli4_cq_event_alloc(phba);
8254 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8255 "0394 Failed to allocate CQ_EVENT entry\n");
8259 /* Move the CQE into an asynchronous event entry */
8260 memcpy(&cq_event->cqe, mcqe, sizeof(struct lpfc_mcqe));
8261 spin_lock_irqsave(&phba->hbalock, iflags);
8262 list_add_tail(&cq_event->list, &phba->sli4_hba.sp_asynce_work_queue);
8263 /* Set the async event flag */
8264 phba->hba_flag |= ASYNC_EVENT;
8265 spin_unlock_irqrestore(&phba->hbalock, iflags);
8271 * lpfc_sli4_sp_handle_mbox_event - Handle a mailbox completion event
8272 * @phba: Pointer to HBA context object.
8273 * @cqe: Pointer to mailbox completion queue entry.
8275 * This routine process a mailbox completion queue entry with mailbox
8278 * Return: true if work posted to worker thread, otherwise false.
8281 lpfc_sli4_sp_handle_mbox_event(struct lpfc_hba *phba, struct lpfc_mcqe *mcqe)
8283 uint32_t mcqe_status;
8284 MAILBOX_t *mbox, *pmbox;
8285 struct lpfc_mqe *mqe;
8286 struct lpfc_vport *vport;
8287 struct lpfc_nodelist *ndlp;
8288 struct lpfc_dmabuf *mp;
8289 unsigned long iflags;
8291 bool workposted = false;
8294 /* If not a mailbox complete MCQE, out by checking mailbox consume */
8295 if (!bf_get(lpfc_trailer_completed, mcqe))
8296 goto out_no_mqe_complete;
8298 /* Get the reference to the active mbox command */
8299 spin_lock_irqsave(&phba->hbalock, iflags);
8300 pmb = phba->sli.mbox_active;
8301 if (unlikely(!pmb)) {
8302 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
8303 "1832 No pending MBOX command to handle\n");
8304 spin_unlock_irqrestore(&phba->hbalock, iflags);
8305 goto out_no_mqe_complete;
8307 spin_unlock_irqrestore(&phba->hbalock, iflags);
8309 pmbox = (MAILBOX_t *)&pmb->u.mqe;
8313 /* Reset heartbeat timer */
8314 phba->last_completion_time = jiffies;
8315 del_timer(&phba->sli.mbox_tmo);
8317 /* Move mbox data to caller's mailbox region, do endian swapping */
8318 if (pmb->mbox_cmpl && mbox)
8319 lpfc_sli_pcimem_bcopy(mbox, mqe, sizeof(struct lpfc_mqe));
8320 /* Set the mailbox status with SLI4 range 0x4000 */
8321 mcqe_status = bf_get(lpfc_mcqe_status, mcqe);
8322 if (mcqe_status != MB_CQE_STATUS_SUCCESS)
8323 bf_set(lpfc_mqe_status, mqe,
8324 (LPFC_MBX_ERROR_RANGE | mcqe_status));
8326 if (pmb->mbox_flag & LPFC_MBX_IMED_UNREG) {
8327 pmb->mbox_flag &= ~LPFC_MBX_IMED_UNREG;
8328 lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_MBOX_VPORT,
8329 "MBOX dflt rpi: status:x%x rpi:x%x",
8331 pmbox->un.varWords[0], 0);
8332 if (mcqe_status == MB_CQE_STATUS_SUCCESS) {
8333 mp = (struct lpfc_dmabuf *)(pmb->context1);
8334 ndlp = (struct lpfc_nodelist *)pmb->context2;
8335 /* Reg_LOGIN of dflt RPI was successful. Now lets get
8336 * RID of the PPI using the same mbox buffer.
8338 lpfc_unreg_login(phba, vport->vpi,
8339 pmbox->un.varWords[0], pmb);
8340 pmb->mbox_cmpl = lpfc_mbx_cmpl_dflt_rpi;
8342 pmb->context2 = ndlp;
8344 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
8346 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX |
8347 LOG_SLI, "0385 rc should "
8348 "have been MBX_BUSY\n");
8349 if (rc != MBX_NOT_FINISHED)
8350 goto send_current_mbox;
8353 spin_lock_irqsave(&phba->pport->work_port_lock, iflags);
8354 phba->pport->work_port_events &= ~WORKER_MBOX_TMO;
8355 spin_unlock_irqrestore(&phba->pport->work_port_lock, iflags);
8357 /* There is mailbox completion work to do */
8358 spin_lock_irqsave(&phba->hbalock, iflags);
8359 __lpfc_mbox_cmpl_put(phba, pmb);
8360 phba->work_ha |= HA_MBATT;
8361 spin_unlock_irqrestore(&phba->hbalock, iflags);
8365 spin_lock_irqsave(&phba->hbalock, iflags);
8366 /* Release the mailbox command posting token */
8367 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
8368 /* Setting active mailbox pointer need to be in sync to flag clear */
8369 phba->sli.mbox_active = NULL;
8370 spin_unlock_irqrestore(&phba->hbalock, iflags);
8371 /* Wake up worker thread to post the next pending mailbox command */
8372 lpfc_worker_wake_up(phba);
8373 out_no_mqe_complete:
8374 if (bf_get(lpfc_trailer_consumed, mcqe))
8375 lpfc_sli4_mq_release(phba->sli4_hba.mbx_wq);
8380 * lpfc_sli4_sp_handle_mcqe - Process a mailbox completion queue entry
8381 * @phba: Pointer to HBA context object.
8382 * @cqe: Pointer to mailbox completion queue entry.
8384 * This routine process a mailbox completion queue entry, it invokes the
8385 * proper mailbox complete handling or asynchrous event handling routine
8386 * according to the MCQE's async bit.
8388 * Return: true if work posted to worker thread, otherwise false.
8391 lpfc_sli4_sp_handle_mcqe(struct lpfc_hba *phba, struct lpfc_cqe *cqe)
8393 struct lpfc_mcqe mcqe;
8396 /* Copy the mailbox MCQE and convert endian order as needed */
8397 lpfc_sli_pcimem_bcopy(cqe, &mcqe, sizeof(struct lpfc_mcqe));
8399 /* Invoke the proper event handling routine */
8400 if (!bf_get(lpfc_trailer_async, &mcqe))
8401 workposted = lpfc_sli4_sp_handle_mbox_event(phba, &mcqe);
8403 workposted = lpfc_sli4_sp_handle_async_event(phba, &mcqe);
8408 * lpfc_sli4_sp_handle_els_wcqe - Handle els work-queue completion event
8409 * @phba: Pointer to HBA context object.
8410 * @wcqe: Pointer to work-queue completion queue entry.
8412 * This routine handles an ELS work-queue completion event.
8414 * Return: true if work posted to worker thread, otherwise false.
8417 lpfc_sli4_sp_handle_els_wcqe(struct lpfc_hba *phba,
8418 struct lpfc_wcqe_complete *wcqe)
8420 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
8421 struct lpfc_iocbq *cmdiocbq;
8422 struct lpfc_iocbq *irspiocbq;
8423 unsigned long iflags;
8424 bool workposted = false;
8426 spin_lock_irqsave(&phba->hbalock, iflags);
8427 pring->stats.iocb_event++;
8428 /* Look up the ELS command IOCB and create pseudo response IOCB */
8429 cmdiocbq = lpfc_sli_iocbq_lookup_by_tag(phba, pring,
8430 bf_get(lpfc_wcqe_c_request_tag, wcqe));
8431 spin_unlock_irqrestore(&phba->hbalock, iflags);
8433 if (unlikely(!cmdiocbq)) {
8434 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8435 "0386 ELS complete with no corresponding "
8436 "cmdiocb: iotag (%d)\n",
8437 bf_get(lpfc_wcqe_c_request_tag, wcqe));
8441 /* Fake the irspiocbq and copy necessary response information */
8442 irspiocbq = lpfc_sli_get_iocbq(phba);
8444 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8445 "0387 Failed to allocate an iocbq\n");
8448 lpfc_sli4_iocb_param_transfer(irspiocbq, cmdiocbq, wcqe);
8450 /* Add the irspiocb to the response IOCB work list */
8451 spin_lock_irqsave(&phba->hbalock, iflags);
8452 list_add_tail(&irspiocbq->list, &phba->sli4_hba.sp_rspiocb_work_queue);
8453 /* Indicate ELS ring attention */
8454 phba->work_ha |= (HA_R0ATT << (4*LPFC_ELS_RING));
8455 spin_unlock_irqrestore(&phba->hbalock, iflags);
8462 * lpfc_sli4_sp_handle_rel_wcqe - Handle slow-path WQ entry consumed event
8463 * @phba: Pointer to HBA context object.
8464 * @wcqe: Pointer to work-queue completion queue entry.
8466 * This routine handles slow-path WQ entry comsumed event by invoking the
8467 * proper WQ release routine to the slow-path WQ.
8470 lpfc_sli4_sp_handle_rel_wcqe(struct lpfc_hba *phba,
8471 struct lpfc_wcqe_release *wcqe)
8473 /* Check for the slow-path ELS work queue */
8474 if (bf_get(lpfc_wcqe_r_wq_id, wcqe) == phba->sli4_hba.els_wq->queue_id)
8475 lpfc_sli4_wq_release(phba->sli4_hba.els_wq,
8476 bf_get(lpfc_wcqe_r_wqe_index, wcqe));
8478 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8479 "2579 Slow-path wqe consume event carries "
8480 "miss-matched qid: wcqe-qid=x%x, sp-qid=x%x\n",
8481 bf_get(lpfc_wcqe_r_wqe_index, wcqe),
8482 phba->sli4_hba.els_wq->queue_id);
8486 * lpfc_sli4_sp_handle_abort_xri_wcqe - Handle a xri abort event
8487 * @phba: Pointer to HBA context object.
8488 * @cq: Pointer to a WQ completion queue.
8489 * @wcqe: Pointer to work-queue completion queue entry.
8491 * This routine handles an XRI abort event.
8493 * Return: true if work posted to worker thread, otherwise false.
8496 lpfc_sli4_sp_handle_abort_xri_wcqe(struct lpfc_hba *phba,
8497 struct lpfc_queue *cq,
8498 struct sli4_wcqe_xri_aborted *wcqe)
8500 bool workposted = false;
8501 struct lpfc_cq_event *cq_event;
8502 unsigned long iflags;
8504 /* Allocate a new internal CQ_EVENT entry */
8505 cq_event = lpfc_sli4_cq_event_alloc(phba);
8507 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8508 "0602 Failed to allocate CQ_EVENT entry\n");
8512 /* Move the CQE into the proper xri abort event list */
8513 memcpy(&cq_event->cqe, wcqe, sizeof(struct sli4_wcqe_xri_aborted));
8514 switch (cq->subtype) {
8516 spin_lock_irqsave(&phba->hbalock, iflags);
8517 list_add_tail(&cq_event->list,
8518 &phba->sli4_hba.sp_fcp_xri_aborted_work_queue);
8519 /* Set the fcp xri abort event flag */
8520 phba->hba_flag |= FCP_XRI_ABORT_EVENT;
8521 spin_unlock_irqrestore(&phba->hbalock, iflags);
8525 spin_lock_irqsave(&phba->hbalock, iflags);
8526 list_add_tail(&cq_event->list,
8527 &phba->sli4_hba.sp_els_xri_aborted_work_queue);
8528 /* Set the els xri abort event flag */
8529 phba->hba_flag |= ELS_XRI_ABORT_EVENT;
8530 spin_unlock_irqrestore(&phba->hbalock, iflags);
8534 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8535 "0603 Invalid work queue CQE subtype (x%x)\n",
8544 * lpfc_sli4_sp_handle_wcqe - Process a work-queue completion queue entry
8545 * @phba: Pointer to HBA context object.
8546 * @cq: Pointer to the completion queue.
8547 * @wcqe: Pointer to a completion queue entry.
8549 * This routine process a slow-path work-queue completion queue entry.
8551 * Return: true if work posted to worker thread, otherwise false.
8554 lpfc_sli4_sp_handle_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
8555 struct lpfc_cqe *cqe)
8557 struct lpfc_wcqe_complete wcqe;
8558 bool workposted = false;
8560 /* Copy the work queue CQE and convert endian order if needed */
8561 lpfc_sli_pcimem_bcopy(cqe, &wcqe, sizeof(struct lpfc_cqe));
8563 /* Check and process for different type of WCQE and dispatch */
8564 switch (bf_get(lpfc_wcqe_c_code, &wcqe)) {
8565 case CQE_CODE_COMPL_WQE:
8566 /* Process the WQ complete event */
8567 workposted = lpfc_sli4_sp_handle_els_wcqe(phba,
8568 (struct lpfc_wcqe_complete *)&wcqe);
8570 case CQE_CODE_RELEASE_WQE:
8571 /* Process the WQ release event */
8572 lpfc_sli4_sp_handle_rel_wcqe(phba,
8573 (struct lpfc_wcqe_release *)&wcqe);
8575 case CQE_CODE_XRI_ABORTED:
8576 /* Process the WQ XRI abort event */
8577 workposted = lpfc_sli4_sp_handle_abort_xri_wcqe(phba, cq,
8578 (struct sli4_wcqe_xri_aborted *)&wcqe);
8581 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8582 "0388 Not a valid WCQE code: x%x\n",
8583 bf_get(lpfc_wcqe_c_code, &wcqe));
8590 * lpfc_sli4_sp_handle_rcqe - Process a receive-queue completion queue entry
8591 * @phba: Pointer to HBA context object.
8592 * @rcqe: Pointer to receive-queue completion queue entry.
8594 * This routine process a receive-queue completion queue entry.
8596 * Return: true if work posted to worker thread, otherwise false.
8599 lpfc_sli4_sp_handle_rcqe(struct lpfc_hba *phba, struct lpfc_cqe *cqe)
8601 struct lpfc_rcqe rcqe;
8602 bool workposted = false;
8603 struct lpfc_queue *hrq = phba->sli4_hba.hdr_rq;
8604 struct lpfc_queue *drq = phba->sli4_hba.dat_rq;
8605 struct hbq_dmabuf *dma_buf;
8607 unsigned long iflags;
8609 /* Copy the receive queue CQE and convert endian order if needed */
8610 lpfc_sli_pcimem_bcopy(cqe, &rcqe, sizeof(struct lpfc_rcqe));
8611 lpfc_sli4_rq_release(hrq, drq);
8612 if (bf_get(lpfc_rcqe_code, &rcqe) != CQE_CODE_RECEIVE)
8614 if (bf_get(lpfc_rcqe_rq_id, &rcqe) != hrq->queue_id)
8617 status = bf_get(lpfc_rcqe_status, &rcqe);
8619 case FC_STATUS_RQ_BUF_LEN_EXCEEDED:
8620 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8621 "2537 Receive Frame Truncated!!\n");
8622 case FC_STATUS_RQ_SUCCESS:
8623 spin_lock_irqsave(&phba->hbalock, iflags);
8624 dma_buf = lpfc_sli_hbqbuf_get(&phba->hbqs[0].hbq_buffer_list);
8626 spin_unlock_irqrestore(&phba->hbalock, iflags);
8629 memcpy(&dma_buf->rcqe, &rcqe, sizeof(rcqe));
8630 /* save off the frame for the word thread to process */
8631 list_add_tail(&dma_buf->dbuf.list, &phba->rb_pend_list);
8632 /* Frame received */
8633 phba->hba_flag |= HBA_RECEIVE_BUFFER;
8634 spin_unlock_irqrestore(&phba->hbalock, iflags);
8637 case FC_STATUS_INSUFF_BUF_NEED_BUF:
8638 case FC_STATUS_INSUFF_BUF_FRM_DISC:
8639 /* Post more buffers if possible */
8640 spin_lock_irqsave(&phba->hbalock, iflags);
8641 phba->hba_flag |= HBA_POST_RECEIVE_BUFFER;
8642 spin_unlock_irqrestore(&phba->hbalock, iflags);
8652 * lpfc_sli4_sp_handle_eqe - Process a slow-path event queue entry
8653 * @phba: Pointer to HBA context object.
8654 * @eqe: Pointer to fast-path event queue entry.
8656 * This routine process a event queue entry from the slow-path event queue.
8657 * It will check the MajorCode and MinorCode to determine this is for a
8658 * completion event on a completion queue, if not, an error shall be logged
8659 * and just return. Otherwise, it will get to the corresponding completion
8660 * queue and process all the entries on that completion queue, rearm the
8661 * completion queue, and then return.
8665 lpfc_sli4_sp_handle_eqe(struct lpfc_hba *phba, struct lpfc_eqe *eqe)
8667 struct lpfc_queue *cq = NULL, *childq, *speq;
8668 struct lpfc_cqe *cqe;
8669 bool workposted = false;
8673 if (bf_get(lpfc_eqe_major_code, eqe) != 0 ||
8674 bf_get(lpfc_eqe_minor_code, eqe) != 0) {
8675 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8676 "0359 Not a valid slow-path completion "
8677 "event: majorcode=x%x, minorcode=x%x\n",
8678 bf_get(lpfc_eqe_major_code, eqe),
8679 bf_get(lpfc_eqe_minor_code, eqe));
8683 /* Get the reference to the corresponding CQ */
8684 cqid = bf_get(lpfc_eqe_resource_id, eqe);
8686 /* Search for completion queue pointer matching this cqid */
8687 speq = phba->sli4_hba.sp_eq;
8688 list_for_each_entry(childq, &speq->child_list, list) {
8689 if (childq->queue_id == cqid) {
8694 if (unlikely(!cq)) {
8695 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8696 "0365 Slow-path CQ identifier (%d) does "
8697 "not exist\n", cqid);
8701 /* Process all the entries to the CQ */
8704 while ((cqe = lpfc_sli4_cq_get(cq))) {
8705 workposted |= lpfc_sli4_sp_handle_mcqe(phba, cqe);
8706 if (!(++ecount % LPFC_GET_QE_REL_INT))
8707 lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM);
8711 while ((cqe = lpfc_sli4_cq_get(cq))) {
8712 workposted |= lpfc_sli4_sp_handle_wcqe(phba, cq, cqe);
8713 if (!(++ecount % LPFC_GET_QE_REL_INT))
8714 lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM);
8718 while ((cqe = lpfc_sli4_cq_get(cq))) {
8719 workposted |= lpfc_sli4_sp_handle_rcqe(phba, cqe);
8720 if (!(++ecount % LPFC_GET_QE_REL_INT))
8721 lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM);
8725 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8726 "0370 Invalid completion queue type (%d)\n",
8731 /* Catch the no cq entry condition, log an error */
8732 if (unlikely(ecount == 0))
8733 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8734 "0371 No entry from the CQ: identifier "
8735 "(x%x), type (%d)\n", cq->queue_id, cq->type);
8737 /* In any case, flash and re-arm the RCQ */
8738 lpfc_sli4_cq_release(cq, LPFC_QUEUE_REARM);
8740 /* wake up worker thread if there are works to be done */
8742 lpfc_worker_wake_up(phba);
8746 * lpfc_sli4_fp_handle_fcp_wcqe - Process fast-path work queue completion entry
8747 * @eqe: Pointer to fast-path completion queue entry.
8749 * This routine process a fast-path work queue completion entry from fast-path
8750 * event queue for FCP command response completion.
8753 lpfc_sli4_fp_handle_fcp_wcqe(struct lpfc_hba *phba,
8754 struct lpfc_wcqe_complete *wcqe)
8756 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_FCP_RING];
8757 struct lpfc_iocbq *cmdiocbq;
8758 struct lpfc_iocbq irspiocbq;
8759 unsigned long iflags;
8761 spin_lock_irqsave(&phba->hbalock, iflags);
8762 pring->stats.iocb_event++;
8763 spin_unlock_irqrestore(&phba->hbalock, iflags);
8765 /* Check for response status */
8766 if (unlikely(bf_get(lpfc_wcqe_c_status, wcqe))) {
8767 /* If resource errors reported from HBA, reduce queue
8768 * depth of the SCSI device.
8770 if ((bf_get(lpfc_wcqe_c_status, wcqe) ==
8771 IOSTAT_LOCAL_REJECT) &&
8772 (wcqe->parameter == IOERR_NO_RESOURCES)) {
8773 phba->lpfc_rampdown_queue_depth(phba);
8775 /* Log the error status */
8776 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8777 "0373 FCP complete error: status=x%x, "
8778 "hw_status=x%x, total_data_specified=%d, "
8779 "parameter=x%x, word3=x%x\n",
8780 bf_get(lpfc_wcqe_c_status, wcqe),
8781 bf_get(lpfc_wcqe_c_hw_status, wcqe),
8782 wcqe->total_data_placed, wcqe->parameter,
8786 /* Look up the FCP command IOCB and create pseudo response IOCB */
8787 spin_lock_irqsave(&phba->hbalock, iflags);
8788 cmdiocbq = lpfc_sli_iocbq_lookup_by_tag(phba, pring,
8789 bf_get(lpfc_wcqe_c_request_tag, wcqe));
8790 spin_unlock_irqrestore(&phba->hbalock, iflags);
8791 if (unlikely(!cmdiocbq)) {
8792 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8793 "0374 FCP complete with no corresponding "
8794 "cmdiocb: iotag (%d)\n",
8795 bf_get(lpfc_wcqe_c_request_tag, wcqe));
8798 if (unlikely(!cmdiocbq->iocb_cmpl)) {
8799 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8800 "0375 FCP cmdiocb not callback function "
8802 bf_get(lpfc_wcqe_c_request_tag, wcqe));
8806 /* Fake the irspiocb and copy necessary response information */
8807 lpfc_sli4_iocb_param_transfer(&irspiocbq, cmdiocbq, wcqe);
8809 /* Pass the cmd_iocb and the rsp state to the upper layer */
8810 (cmdiocbq->iocb_cmpl)(phba, cmdiocbq, &irspiocbq);
8814 * lpfc_sli4_fp_handle_rel_wcqe - Handle fast-path WQ entry consumed event
8815 * @phba: Pointer to HBA context object.
8816 * @cq: Pointer to completion queue.
8817 * @wcqe: Pointer to work-queue completion queue entry.
8819 * This routine handles an fast-path WQ entry comsumed event by invoking the
8820 * proper WQ release routine to the slow-path WQ.
8823 lpfc_sli4_fp_handle_rel_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
8824 struct lpfc_wcqe_release *wcqe)
8826 struct lpfc_queue *childwq;
8827 bool wqid_matched = false;
8830 /* Check for fast-path FCP work queue release */
8831 fcp_wqid = bf_get(lpfc_wcqe_r_wq_id, wcqe);
8832 list_for_each_entry(childwq, &cq->child_list, list) {
8833 if (childwq->queue_id == fcp_wqid) {
8834 lpfc_sli4_wq_release(childwq,
8835 bf_get(lpfc_wcqe_r_wqe_index, wcqe));
8836 wqid_matched = true;
8840 /* Report warning log message if no match found */
8841 if (wqid_matched != true)
8842 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8843 "2580 Fast-path wqe consume event carries "
8844 "miss-matched qid: wcqe-qid=x%x\n", fcp_wqid);
8848 * lpfc_sli4_fp_handle_wcqe - Process fast-path work queue completion entry
8849 * @cq: Pointer to the completion queue.
8850 * @eqe: Pointer to fast-path completion queue entry.
8852 * This routine process a fast-path work queue completion entry from fast-path
8853 * event queue for FCP command response completion.
8856 lpfc_sli4_fp_handle_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
8857 struct lpfc_cqe *cqe)
8859 struct lpfc_wcqe_release wcqe;
8860 bool workposted = false;
8862 /* Copy the work queue CQE and convert endian order if needed */
8863 lpfc_sli_pcimem_bcopy(cqe, &wcqe, sizeof(struct lpfc_cqe));
8865 /* Check and process for different type of WCQE and dispatch */
8866 switch (bf_get(lpfc_wcqe_c_code, &wcqe)) {
8867 case CQE_CODE_COMPL_WQE:
8868 /* Process the WQ complete event */
8869 lpfc_sli4_fp_handle_fcp_wcqe(phba,
8870 (struct lpfc_wcqe_complete *)&wcqe);
8872 case CQE_CODE_RELEASE_WQE:
8873 /* Process the WQ release event */
8874 lpfc_sli4_fp_handle_rel_wcqe(phba, cq,
8875 (struct lpfc_wcqe_release *)&wcqe);
8877 case CQE_CODE_XRI_ABORTED:
8878 /* Process the WQ XRI abort event */
8879 workposted = lpfc_sli4_sp_handle_abort_xri_wcqe(phba, cq,
8880 (struct sli4_wcqe_xri_aborted *)&wcqe);
8883 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8884 "0144 Not a valid WCQE code: x%x\n",
8885 bf_get(lpfc_wcqe_c_code, &wcqe));
8892 * lpfc_sli4_fp_handle_eqe - Process a fast-path event queue entry
8893 * @phba: Pointer to HBA context object.
8894 * @eqe: Pointer to fast-path event queue entry.
8896 * This routine process a event queue entry from the fast-path event queue.
8897 * It will check the MajorCode and MinorCode to determine this is for a
8898 * completion event on a completion queue, if not, an error shall be logged
8899 * and just return. Otherwise, it will get to the corresponding completion
8900 * queue and process all the entries on the completion queue, rearm the
8901 * completion queue, and then return.
8904 lpfc_sli4_fp_handle_eqe(struct lpfc_hba *phba, struct lpfc_eqe *eqe,
8907 struct lpfc_queue *cq;
8908 struct lpfc_cqe *cqe;
8909 bool workposted = false;
8913 if (unlikely(bf_get(lpfc_eqe_major_code, eqe) != 0) ||
8914 unlikely(bf_get(lpfc_eqe_minor_code, eqe) != 0)) {
8915 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8916 "0366 Not a valid fast-path completion "
8917 "event: majorcode=x%x, minorcode=x%x\n",
8918 bf_get(lpfc_eqe_major_code, eqe),
8919 bf_get(lpfc_eqe_minor_code, eqe));
8923 cq = phba->sli4_hba.fcp_cq[fcp_cqidx];
8924 if (unlikely(!cq)) {
8925 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8926 "0367 Fast-path completion queue does not "
8931 /* Get the reference to the corresponding CQ */
8932 cqid = bf_get(lpfc_eqe_resource_id, eqe);
8933 if (unlikely(cqid != cq->queue_id)) {
8934 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8935 "0368 Miss-matched fast-path completion "
8936 "queue identifier: eqcqid=%d, fcpcqid=%d\n",
8937 cqid, cq->queue_id);
8941 /* Process all the entries to the CQ */
8942 while ((cqe = lpfc_sli4_cq_get(cq))) {
8943 workposted |= lpfc_sli4_fp_handle_wcqe(phba, cq, cqe);
8944 if (!(++ecount % LPFC_GET_QE_REL_INT))
8945 lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM);
8948 /* Catch the no cq entry condition */
8949 if (unlikely(ecount == 0))
8950 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8951 "0369 No entry from fast-path completion "
8952 "queue fcpcqid=%d\n", cq->queue_id);
8954 /* In any case, flash and re-arm the CQ */
8955 lpfc_sli4_cq_release(cq, LPFC_QUEUE_REARM);
8957 /* wake up worker thread if there are works to be done */
8959 lpfc_worker_wake_up(phba);
8963 lpfc_sli4_eq_flush(struct lpfc_hba *phba, struct lpfc_queue *eq)
8965 struct lpfc_eqe *eqe;
8967 /* walk all the EQ entries and drop on the floor */
8968 while ((eqe = lpfc_sli4_eq_get(eq)))
8971 /* Clear and re-arm the EQ */
8972 lpfc_sli4_eq_release(eq, LPFC_QUEUE_REARM);
8976 * lpfc_sli4_sp_intr_handler - Slow-path interrupt handler to SLI-4 device
8977 * @irq: Interrupt number.
8978 * @dev_id: The device context pointer.
8980 * This function is directly called from the PCI layer as an interrupt
8981 * service routine when device with SLI-4 interface spec is enabled with
8982 * MSI-X multi-message interrupt mode and there are slow-path events in
8983 * the HBA. However, when the device is enabled with either MSI or Pin-IRQ
8984 * interrupt mode, this function is called as part of the device-level
8985 * interrupt handler. When the PCI slot is in error recovery or the HBA is
8986 * undergoing initialization, the interrupt handler will not process the
8987 * interrupt. The link attention and ELS ring attention events are handled
8988 * by the worker thread. The interrupt handler signals the worker thread
8989 * and returns for these events. This function is called without any lock
8990 * held. It gets the hbalock to access and update SLI data structures.
8992 * This function returns IRQ_HANDLED when interrupt is handled else it
8996 lpfc_sli4_sp_intr_handler(int irq, void *dev_id)
8998 struct lpfc_hba *phba;
8999 struct lpfc_queue *speq;
9000 struct lpfc_eqe *eqe;
9001 unsigned long iflag;
9005 * Get the driver's phba structure from the dev_id
9007 phba = (struct lpfc_hba *)dev_id;
9009 if (unlikely(!phba))
9012 /* Get to the EQ struct associated with this vector */
9013 speq = phba->sli4_hba.sp_eq;
9015 /* Check device state for handling interrupt */
9016 if (unlikely(lpfc_intr_state_check(phba))) {
9017 /* Check again for link_state with lock held */
9018 spin_lock_irqsave(&phba->hbalock, iflag);
9019 if (phba->link_state < LPFC_LINK_DOWN)
9020 /* Flush, clear interrupt, and rearm the EQ */
9021 lpfc_sli4_eq_flush(phba, speq);
9022 spin_unlock_irqrestore(&phba->hbalock, iflag);
9027 * Process all the event on FCP slow-path EQ
9029 while ((eqe = lpfc_sli4_eq_get(speq))) {
9030 lpfc_sli4_sp_handle_eqe(phba, eqe);
9031 if (!(++ecount % LPFC_GET_QE_REL_INT))
9032 lpfc_sli4_eq_release(speq, LPFC_QUEUE_NOARM);
9035 /* Always clear and re-arm the slow-path EQ */
9036 lpfc_sli4_eq_release(speq, LPFC_QUEUE_REARM);
9038 /* Catch the no cq entry condition */
9039 if (unlikely(ecount == 0)) {
9040 if (phba->intr_type == MSIX)
9041 /* MSI-X treated interrupt served as no EQ share INT */
9042 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
9043 "0357 MSI-X interrupt with no EQE\n");
9045 /* Non MSI-X treated on interrupt as EQ share INT */
9050 } /* lpfc_sli4_sp_intr_handler */
9053 * lpfc_sli4_fp_intr_handler - Fast-path interrupt handler to SLI-4 device
9054 * @irq: Interrupt number.
9055 * @dev_id: The device context pointer.
9057 * This function is directly called from the PCI layer as an interrupt
9058 * service routine when device with SLI-4 interface spec is enabled with
9059 * MSI-X multi-message interrupt mode and there is a fast-path FCP IOCB
9060 * ring event in the HBA. However, when the device is enabled with either
9061 * MSI or Pin-IRQ interrupt mode, this function is called as part of the
9062 * device-level interrupt handler. When the PCI slot is in error recovery
9063 * or the HBA is undergoing initialization, the interrupt handler will not
9064 * process the interrupt. The SCSI FCP fast-path ring event are handled in
9065 * the intrrupt context. This function is called without any lock held.
9066 * It gets the hbalock to access and update SLI data structures. Note that,
9067 * the FCP EQ to FCP CQ are one-to-one map such that the FCP EQ index is
9068 * equal to that of FCP CQ index.
9070 * This function returns IRQ_HANDLED when interrupt is handled else it
9074 lpfc_sli4_fp_intr_handler(int irq, void *dev_id)
9076 struct lpfc_hba *phba;
9077 struct lpfc_fcp_eq_hdl *fcp_eq_hdl;
9078 struct lpfc_queue *fpeq;
9079 struct lpfc_eqe *eqe;
9080 unsigned long iflag;
9084 /* Get the driver's phba structure from the dev_id */
9085 fcp_eq_hdl = (struct lpfc_fcp_eq_hdl *)dev_id;
9086 phba = fcp_eq_hdl->phba;
9087 fcp_eqidx = fcp_eq_hdl->idx;
9089 if (unlikely(!phba))
9092 /* Get to the EQ struct associated with this vector */
9093 fpeq = phba->sli4_hba.fp_eq[fcp_eqidx];
9095 /* Check device state for handling interrupt */
9096 if (unlikely(lpfc_intr_state_check(phba))) {
9097 /* Check again for link_state with lock held */
9098 spin_lock_irqsave(&phba->hbalock, iflag);
9099 if (phba->link_state < LPFC_LINK_DOWN)
9100 /* Flush, clear interrupt, and rearm the EQ */
9101 lpfc_sli4_eq_flush(phba, fpeq);
9102 spin_unlock_irqrestore(&phba->hbalock, iflag);
9107 * Process all the event on FCP fast-path EQ
9109 while ((eqe = lpfc_sli4_eq_get(fpeq))) {
9110 lpfc_sli4_fp_handle_eqe(phba, eqe, fcp_eqidx);
9111 if (!(++ecount % LPFC_GET_QE_REL_INT))
9112 lpfc_sli4_eq_release(fpeq, LPFC_QUEUE_NOARM);
9115 /* Always clear and re-arm the fast-path EQ */
9116 lpfc_sli4_eq_release(fpeq, LPFC_QUEUE_REARM);
9118 if (unlikely(ecount == 0)) {
9119 if (phba->intr_type == MSIX)
9120 /* MSI-X treated interrupt served as no EQ share INT */
9121 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
9122 "0358 MSI-X interrupt with no EQE\n");
9124 /* Non MSI-X treated on interrupt as EQ share INT */
9129 } /* lpfc_sli4_fp_intr_handler */
9132 * lpfc_sli4_intr_handler - Device-level interrupt handler for SLI-4 device
9133 * @irq: Interrupt number.
9134 * @dev_id: The device context pointer.
9136 * This function is the device-level interrupt handler to device with SLI-4
9137 * interface spec, called from the PCI layer when either MSI or Pin-IRQ
9138 * interrupt mode is enabled and there is an event in the HBA which requires
9139 * driver attention. This function invokes the slow-path interrupt attention
9140 * handling function and fast-path interrupt attention handling function in
9141 * turn to process the relevant HBA attention events. This function is called
9142 * without any lock held. It gets the hbalock to access and update SLI data
9145 * This function returns IRQ_HANDLED when interrupt is handled, else it
9149 lpfc_sli4_intr_handler(int irq, void *dev_id)
9151 struct lpfc_hba *phba;
9152 irqreturn_t sp_irq_rc, fp_irq_rc;
9153 bool fp_handled = false;
9156 /* Get the driver's phba structure from the dev_id */
9157 phba = (struct lpfc_hba *)dev_id;
9159 if (unlikely(!phba))
9163 * Invokes slow-path host attention interrupt handling as appropriate.
9165 sp_irq_rc = lpfc_sli4_sp_intr_handler(irq, dev_id);
9168 * Invoke fast-path host attention interrupt handling as appropriate.
9170 for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++) {
9171 fp_irq_rc = lpfc_sli4_fp_intr_handler(irq,
9172 &phba->sli4_hba.fcp_eq_hdl[fcp_eqidx]);
9173 if (fp_irq_rc == IRQ_HANDLED)
9177 return (fp_handled == true) ? IRQ_HANDLED : sp_irq_rc;
9178 } /* lpfc_sli4_intr_handler */
9181 * lpfc_sli4_queue_free - free a queue structure and associated memory
9182 * @queue: The queue structure to free.
9184 * This function frees a queue structure and the DMAable memeory used for
9185 * the host resident queue. This function must be called after destroying the
9189 lpfc_sli4_queue_free(struct lpfc_queue *queue)
9191 struct lpfc_dmabuf *dmabuf;
9196 while (!list_empty(&queue->page_list)) {
9197 list_remove_head(&queue->page_list, dmabuf, struct lpfc_dmabuf,
9199 dma_free_coherent(&queue->phba->pcidev->dev, PAGE_SIZE,
9200 dmabuf->virt, dmabuf->phys);
9208 * lpfc_sli4_queue_alloc - Allocate and initialize a queue structure
9209 * @phba: The HBA that this queue is being created on.
9210 * @entry_size: The size of each queue entry for this queue.
9211 * @entry count: The number of entries that this queue will handle.
9213 * This function allocates a queue structure and the DMAable memory used for
9214 * the host resident queue. This function must be called before creating the
9218 lpfc_sli4_queue_alloc(struct lpfc_hba *phba, uint32_t entry_size,
9219 uint32_t entry_count)
9221 struct lpfc_queue *queue;
9222 struct lpfc_dmabuf *dmabuf;
9223 int x, total_qe_count;
9227 queue = kzalloc(sizeof(struct lpfc_queue) +
9228 (sizeof(union sli4_qe) * entry_count), GFP_KERNEL);
9231 queue->page_count = (PAGE_ALIGN(entry_size * entry_count))/PAGE_SIZE;
9232 INIT_LIST_HEAD(&queue->list);
9233 INIT_LIST_HEAD(&queue->page_list);
9234 INIT_LIST_HEAD(&queue->child_list);
9235 for (x = 0, total_qe_count = 0; x < queue->page_count; x++) {
9236 dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
9239 dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
9240 PAGE_SIZE, &dmabuf->phys,
9242 if (!dmabuf->virt) {
9246 dmabuf->buffer_tag = x;
9247 list_add_tail(&dmabuf->list, &queue->page_list);
9248 /* initialize queue's entry array */
9249 dma_pointer = dmabuf->virt;
9250 for (; total_qe_count < entry_count &&
9251 dma_pointer < (PAGE_SIZE + dmabuf->virt);
9252 total_qe_count++, dma_pointer += entry_size) {
9253 queue->qe[total_qe_count].address = dma_pointer;
9256 queue->entry_size = entry_size;
9257 queue->entry_count = entry_count;
9262 lpfc_sli4_queue_free(queue);
9267 * lpfc_eq_create - Create an Event Queue on the HBA
9268 * @phba: HBA structure that indicates port to create a queue on.
9269 * @eq: The queue structure to use to create the event queue.
9270 * @imax: The maximum interrupt per second limit.
9272 * This function creates an event queue, as detailed in @eq, on a port,
9273 * described by @phba by sending an EQ_CREATE mailbox command to the HBA.
9275 * The @phba struct is used to send mailbox command to HBA. The @eq struct
9276 * is used to get the entry count and entry size that are necessary to
9277 * determine the number of pages to allocate and use for this queue. This
9278 * function will send the EQ_CREATE mailbox command to the HBA to setup the
9279 * event queue. This function is asynchronous and will wait for the mailbox
9280 * command to finish before continuing.
9282 * On success this function will return a zero. If unable to allocate enough
9283 * memory this function will return ENOMEM. If the queue create mailbox command
9284 * fails this function will return ENXIO.
9287 lpfc_eq_create(struct lpfc_hba *phba, struct lpfc_queue *eq, uint16_t imax)
9289 struct lpfc_mbx_eq_create *eq_create;
9291 int rc, length, status = 0;
9292 struct lpfc_dmabuf *dmabuf;
9293 uint32_t shdr_status, shdr_add_status;
9294 union lpfc_sli4_cfg_shdr *shdr;
9297 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
9300 length = (sizeof(struct lpfc_mbx_eq_create) -
9301 sizeof(struct lpfc_sli4_cfg_mhdr));
9302 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
9303 LPFC_MBOX_OPCODE_EQ_CREATE,
9304 length, LPFC_SLI4_MBX_EMBED);
9305 eq_create = &mbox->u.mqe.un.eq_create;
9306 bf_set(lpfc_mbx_eq_create_num_pages, &eq_create->u.request,
9308 bf_set(lpfc_eq_context_size, &eq_create->u.request.context,
9310 bf_set(lpfc_eq_context_valid, &eq_create->u.request.context, 1);
9311 /* Calculate delay multiper from maximum interrupt per second */
9312 dmult = LPFC_DMULT_CONST/imax - 1;
9313 bf_set(lpfc_eq_context_delay_multi, &eq_create->u.request.context,
9315 switch (eq->entry_count) {
9317 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
9318 "0360 Unsupported EQ count. (%d)\n",
9320 if (eq->entry_count < 256)
9322 /* otherwise default to smallest count (drop through) */
9324 bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
9328 bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
9332 bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
9336 bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
9340 bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
9344 list_for_each_entry(dmabuf, &eq->page_list, list) {
9345 eq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
9346 putPaddrLow(dmabuf->phys);
9347 eq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
9348 putPaddrHigh(dmabuf->phys);
9350 mbox->vport = phba->pport;
9351 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
9352 mbox->context1 = NULL;
9353 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
9354 shdr = (union lpfc_sli4_cfg_shdr *) &eq_create->header.cfg_shdr;
9355 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9356 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9357 if (shdr_status || shdr_add_status || rc) {
9358 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9359 "2500 EQ_CREATE mailbox failed with "
9360 "status x%x add_status x%x, mbx status x%x\n",
9361 shdr_status, shdr_add_status, rc);
9365 eq->subtype = LPFC_NONE;
9366 eq->queue_id = bf_get(lpfc_mbx_eq_create_q_id, &eq_create->u.response);
9367 if (eq->queue_id == 0xFFFF)
9372 if (rc != MBX_TIMEOUT)
9373 mempool_free(mbox, phba->mbox_mem_pool);
9378 * lpfc_cq_create - Create a Completion Queue on the HBA
9379 * @phba: HBA structure that indicates port to create a queue on.
9380 * @cq: The queue structure to use to create the completion queue.
9381 * @eq: The event queue to bind this completion queue to.
9383 * This function creates a completion queue, as detailed in @wq, on a port,
9384 * described by @phba by sending a CQ_CREATE mailbox command to the HBA.
9386 * The @phba struct is used to send mailbox command to HBA. The @cq struct
9387 * is used to get the entry count and entry size that are necessary to
9388 * determine the number of pages to allocate and use for this queue. The @eq
9389 * is used to indicate which event queue to bind this completion queue to. This
9390 * function will send the CQ_CREATE mailbox command to the HBA to setup the
9391 * completion queue. This function is asynchronous and will wait for the mailbox
9392 * command to finish before continuing.
9394 * On success this function will return a zero. If unable to allocate enough
9395 * memory this function will return ENOMEM. If the queue create mailbox command
9396 * fails this function will return ENXIO.
9399 lpfc_cq_create(struct lpfc_hba *phba, struct lpfc_queue *cq,
9400 struct lpfc_queue *eq, uint32_t type, uint32_t subtype)
9402 struct lpfc_mbx_cq_create *cq_create;
9403 struct lpfc_dmabuf *dmabuf;
9405 int rc, length, status = 0;
9406 uint32_t shdr_status, shdr_add_status;
9407 union lpfc_sli4_cfg_shdr *shdr;
9409 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
9412 length = (sizeof(struct lpfc_mbx_cq_create) -
9413 sizeof(struct lpfc_sli4_cfg_mhdr));
9414 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
9415 LPFC_MBOX_OPCODE_CQ_CREATE,
9416 length, LPFC_SLI4_MBX_EMBED);
9417 cq_create = &mbox->u.mqe.un.cq_create;
9418 bf_set(lpfc_mbx_cq_create_num_pages, &cq_create->u.request,
9420 bf_set(lpfc_cq_context_event, &cq_create->u.request.context, 1);
9421 bf_set(lpfc_cq_context_valid, &cq_create->u.request.context, 1);
9422 bf_set(lpfc_cq_eq_id, &cq_create->u.request.context, eq->queue_id);
9423 switch (cq->entry_count) {
9425 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
9426 "0361 Unsupported CQ count. (%d)\n",
9428 if (cq->entry_count < 256)
9430 /* otherwise default to smallest count (drop through) */
9432 bf_set(lpfc_cq_context_count, &cq_create->u.request.context,
9436 bf_set(lpfc_cq_context_count, &cq_create->u.request.context,
9440 bf_set(lpfc_cq_context_count, &cq_create->u.request.context,
9444 list_for_each_entry(dmabuf, &cq->page_list, list) {
9445 cq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
9446 putPaddrLow(dmabuf->phys);
9447 cq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
9448 putPaddrHigh(dmabuf->phys);
9450 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
9452 /* The IOCTL status is embedded in the mailbox subheader. */
9453 shdr = (union lpfc_sli4_cfg_shdr *) &cq_create->header.cfg_shdr;
9454 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9455 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9456 if (shdr_status || shdr_add_status || rc) {
9457 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9458 "2501 CQ_CREATE mailbox failed with "
9459 "status x%x add_status x%x, mbx status x%x\n",
9460 shdr_status, shdr_add_status, rc);
9464 cq->queue_id = bf_get(lpfc_mbx_cq_create_q_id, &cq_create->u.response);
9465 if (cq->queue_id == 0xFFFF) {
9469 /* link the cq onto the parent eq child list */
9470 list_add_tail(&cq->list, &eq->child_list);
9471 /* Set up completion queue's type and subtype */
9473 cq->subtype = subtype;
9474 cq->queue_id = bf_get(lpfc_mbx_cq_create_q_id, &cq_create->u.response);
9479 if (rc != MBX_TIMEOUT)
9480 mempool_free(mbox, phba->mbox_mem_pool);
9485 * lpfc_mq_create - Create a mailbox Queue on the HBA
9486 * @phba: HBA structure that indicates port to create a queue on.
9487 * @mq: The queue structure to use to create the mailbox queue.
9489 * This function creates a mailbox queue, as detailed in @mq, on a port,
9490 * described by @phba by sending a MQ_CREATE mailbox command to the HBA.
9492 * The @phba struct is used to send mailbox command to HBA. The @cq struct
9493 * is used to get the entry count and entry size that are necessary to
9494 * determine the number of pages to allocate and use for this queue. This
9495 * function will send the MQ_CREATE mailbox command to the HBA to setup the
9496 * mailbox queue. This function is asynchronous and will wait for the mailbox
9497 * command to finish before continuing.
9499 * On success this function will return a zero. If unable to allocate enough
9500 * memory this function will return ENOMEM. If the queue create mailbox command
9501 * fails this function will return ENXIO.
9504 lpfc_mq_create(struct lpfc_hba *phba, struct lpfc_queue *mq,
9505 struct lpfc_queue *cq, uint32_t subtype)
9507 struct lpfc_mbx_mq_create *mq_create;
9508 struct lpfc_dmabuf *dmabuf;
9510 int rc, length, status = 0;
9511 uint32_t shdr_status, shdr_add_status;
9512 union lpfc_sli4_cfg_shdr *shdr;
9514 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
9517 length = (sizeof(struct lpfc_mbx_mq_create) -
9518 sizeof(struct lpfc_sli4_cfg_mhdr));
9519 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
9520 LPFC_MBOX_OPCODE_MQ_CREATE,
9521 length, LPFC_SLI4_MBX_EMBED);
9522 mq_create = &mbox->u.mqe.un.mq_create;
9523 bf_set(lpfc_mbx_mq_create_num_pages, &mq_create->u.request,
9525 bf_set(lpfc_mq_context_cq_id, &mq_create->u.request.context,
9527 bf_set(lpfc_mq_context_valid, &mq_create->u.request.context, 1);
9528 switch (mq->entry_count) {
9530 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
9531 "0362 Unsupported MQ count. (%d)\n",
9533 if (mq->entry_count < 16)
9535 /* otherwise default to smallest count (drop through) */
9537 bf_set(lpfc_mq_context_count, &mq_create->u.request.context,
9541 bf_set(lpfc_mq_context_count, &mq_create->u.request.context,
9545 bf_set(lpfc_mq_context_count, &mq_create->u.request.context,
9549 bf_set(lpfc_mq_context_count, &mq_create->u.request.context,
9553 list_for_each_entry(dmabuf, &mq->page_list, list) {
9554 mq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
9555 putPaddrLow(dmabuf->phys);
9556 mq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
9557 putPaddrHigh(dmabuf->phys);
9559 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
9560 /* The IOCTL status is embedded in the mailbox subheader. */
9561 shdr = (union lpfc_sli4_cfg_shdr *) &mq_create->header.cfg_shdr;
9562 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9563 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9564 if (shdr_status || shdr_add_status || rc) {
9565 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9566 "2502 MQ_CREATE mailbox failed with "
9567 "status x%x add_status x%x, mbx status x%x\n",
9568 shdr_status, shdr_add_status, rc);
9572 mq->queue_id = bf_get(lpfc_mbx_mq_create_q_id, &mq_create->u.response);
9573 if (mq->queue_id == 0xFFFF) {
9578 mq->subtype = subtype;
9582 /* link the mq onto the parent cq child list */
9583 list_add_tail(&mq->list, &cq->child_list);
9585 if (rc != MBX_TIMEOUT)
9586 mempool_free(mbox, phba->mbox_mem_pool);
9591 * lpfc_wq_create - Create a Work Queue on the HBA
9592 * @phba: HBA structure that indicates port to create a queue on.
9593 * @wq: The queue structure to use to create the work queue.
9594 * @cq: The completion queue to bind this work queue to.
9595 * @subtype: The subtype of the work queue indicating its functionality.
9597 * This function creates a work queue, as detailed in @wq, on a port, described
9598 * by @phba by sending a WQ_CREATE mailbox command to the HBA.
9600 * The @phba struct is used to send mailbox command to HBA. The @wq struct
9601 * is used to get the entry count and entry size that are necessary to
9602 * determine the number of pages to allocate and use for this queue. The @cq
9603 * is used to indicate which completion queue to bind this work queue to. This
9604 * function will send the WQ_CREATE mailbox command to the HBA to setup the
9605 * work queue. This function is asynchronous and will wait for the mailbox
9606 * command to finish before continuing.
9608 * On success this function will return a zero. If unable to allocate enough
9609 * memory this function will return ENOMEM. If the queue create mailbox command
9610 * fails this function will return ENXIO.
9613 lpfc_wq_create(struct lpfc_hba *phba, struct lpfc_queue *wq,
9614 struct lpfc_queue *cq, uint32_t subtype)
9616 struct lpfc_mbx_wq_create *wq_create;
9617 struct lpfc_dmabuf *dmabuf;
9619 int rc, length, status = 0;
9620 uint32_t shdr_status, shdr_add_status;
9621 union lpfc_sli4_cfg_shdr *shdr;
9623 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
9626 length = (sizeof(struct lpfc_mbx_wq_create) -
9627 sizeof(struct lpfc_sli4_cfg_mhdr));
9628 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
9629 LPFC_MBOX_OPCODE_FCOE_WQ_CREATE,
9630 length, LPFC_SLI4_MBX_EMBED);
9631 wq_create = &mbox->u.mqe.un.wq_create;
9632 bf_set(lpfc_mbx_wq_create_num_pages, &wq_create->u.request,
9634 bf_set(lpfc_mbx_wq_create_cq_id, &wq_create->u.request,
9636 list_for_each_entry(dmabuf, &wq->page_list, list) {
9637 wq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
9638 putPaddrLow(dmabuf->phys);
9639 wq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
9640 putPaddrHigh(dmabuf->phys);
9642 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
9643 /* The IOCTL status is embedded in the mailbox subheader. */
9644 shdr = (union lpfc_sli4_cfg_shdr *) &wq_create->header.cfg_shdr;
9645 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9646 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9647 if (shdr_status || shdr_add_status || rc) {
9648 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9649 "2503 WQ_CREATE mailbox failed with "
9650 "status x%x add_status x%x, mbx status x%x\n",
9651 shdr_status, shdr_add_status, rc);
9655 wq->queue_id = bf_get(lpfc_mbx_wq_create_q_id, &wq_create->u.response);
9656 if (wq->queue_id == 0xFFFF) {
9661 wq->subtype = subtype;
9665 /* link the wq onto the parent cq child list */
9666 list_add_tail(&wq->list, &cq->child_list);
9668 if (rc == MBX_TIMEOUT)
9669 mempool_free(mbox, phba->mbox_mem_pool);
9674 * lpfc_rq_create - Create a Receive Queue on the HBA
9675 * @phba: HBA structure that indicates port to create a queue on.
9676 * @hrq: The queue structure to use to create the header receive queue.
9677 * @drq: The queue structure to use to create the data receive queue.
9678 * @cq: The completion queue to bind this work queue to.
9680 * This function creates a receive buffer queue pair , as detailed in @hrq and
9681 * @drq, on a port, described by @phba by sending a RQ_CREATE mailbox command
9684 * The @phba struct is used to send mailbox command to HBA. The @drq and @hrq
9685 * struct is used to get the entry count that is necessary to determine the
9686 * number of pages to use for this queue. The @cq is used to indicate which
9687 * completion queue to bind received buffers that are posted to these queues to.
9688 * This function will send the RQ_CREATE mailbox command to the HBA to setup the
9689 * receive queue pair. This function is asynchronous and will wait for the
9690 * mailbox command to finish before continuing.
9692 * On success this function will return a zero. If unable to allocate enough
9693 * memory this function will return ENOMEM. If the queue create mailbox command
9694 * fails this function will return ENXIO.
9697 lpfc_rq_create(struct lpfc_hba *phba, struct lpfc_queue *hrq,
9698 struct lpfc_queue *drq, struct lpfc_queue *cq, uint32_t subtype)
9700 struct lpfc_mbx_rq_create *rq_create;
9701 struct lpfc_dmabuf *dmabuf;
9703 int rc, length, status = 0;
9704 uint32_t shdr_status, shdr_add_status;
9705 union lpfc_sli4_cfg_shdr *shdr;
9707 if (hrq->entry_count != drq->entry_count)
9709 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
9712 length = (sizeof(struct lpfc_mbx_rq_create) -
9713 sizeof(struct lpfc_sli4_cfg_mhdr));
9714 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
9715 LPFC_MBOX_OPCODE_FCOE_RQ_CREATE,
9716 length, LPFC_SLI4_MBX_EMBED);
9717 rq_create = &mbox->u.mqe.un.rq_create;
9718 switch (hrq->entry_count) {
9720 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
9721 "2535 Unsupported RQ count. (%d)\n",
9723 if (hrq->entry_count < 512)
9725 /* otherwise default to smallest count (drop through) */
9727 bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
9728 LPFC_RQ_RING_SIZE_512);
9731 bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
9732 LPFC_RQ_RING_SIZE_1024);
9735 bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
9736 LPFC_RQ_RING_SIZE_2048);
9739 bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
9740 LPFC_RQ_RING_SIZE_4096);
9743 bf_set(lpfc_rq_context_cq_id, &rq_create->u.request.context,
9745 bf_set(lpfc_mbx_rq_create_num_pages, &rq_create->u.request,
9747 bf_set(lpfc_rq_context_buf_size, &rq_create->u.request.context,
9749 list_for_each_entry(dmabuf, &hrq->page_list, list) {
9750 rq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
9751 putPaddrLow(dmabuf->phys);
9752 rq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
9753 putPaddrHigh(dmabuf->phys);
9755 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
9756 /* The IOCTL status is embedded in the mailbox subheader. */
9757 shdr = (union lpfc_sli4_cfg_shdr *) &rq_create->header.cfg_shdr;
9758 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9759 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9760 if (shdr_status || shdr_add_status || rc) {
9761 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9762 "2504 RQ_CREATE mailbox failed with "
9763 "status x%x add_status x%x, mbx status x%x\n",
9764 shdr_status, shdr_add_status, rc);
9768 hrq->queue_id = bf_get(lpfc_mbx_rq_create_q_id, &rq_create->u.response);
9769 if (hrq->queue_id == 0xFFFF) {
9773 hrq->type = LPFC_HRQ;
9774 hrq->subtype = subtype;
9775 hrq->host_index = 0;
9778 /* now create the data queue */
9779 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
9780 LPFC_MBOX_OPCODE_FCOE_RQ_CREATE,
9781 length, LPFC_SLI4_MBX_EMBED);
9782 switch (drq->entry_count) {
9784 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
9785 "2536 Unsupported RQ count. (%d)\n",
9787 if (drq->entry_count < 512)
9789 /* otherwise default to smallest count (drop through) */
9791 bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
9792 LPFC_RQ_RING_SIZE_512);
9795 bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
9796 LPFC_RQ_RING_SIZE_1024);
9799 bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
9800 LPFC_RQ_RING_SIZE_2048);
9803 bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
9804 LPFC_RQ_RING_SIZE_4096);
9807 bf_set(lpfc_rq_context_cq_id, &rq_create->u.request.context,
9809 bf_set(lpfc_mbx_rq_create_num_pages, &rq_create->u.request,
9811 bf_set(lpfc_rq_context_buf_size, &rq_create->u.request.context,
9812 LPFC_DATA_BUF_SIZE);
9813 list_for_each_entry(dmabuf, &drq->page_list, list) {
9814 rq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
9815 putPaddrLow(dmabuf->phys);
9816 rq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
9817 putPaddrHigh(dmabuf->phys);
9819 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
9820 /* The IOCTL status is embedded in the mailbox subheader. */
9821 shdr = (union lpfc_sli4_cfg_shdr *) &rq_create->header.cfg_shdr;
9822 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9823 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9824 if (shdr_status || shdr_add_status || rc) {
9828 drq->queue_id = bf_get(lpfc_mbx_rq_create_q_id, &rq_create->u.response);
9829 if (drq->queue_id == 0xFFFF) {
9833 drq->type = LPFC_DRQ;
9834 drq->subtype = subtype;
9835 drq->host_index = 0;
9838 /* link the header and data RQs onto the parent cq child list */
9839 list_add_tail(&hrq->list, &cq->child_list);
9840 list_add_tail(&drq->list, &cq->child_list);
9843 if (rc != MBX_TIMEOUT)
9844 mempool_free(mbox, phba->mbox_mem_pool);
9849 * lpfc_eq_destroy - Destroy an event Queue on the HBA
9850 * @eq: The queue structure associated with the queue to destroy.
9852 * This function destroys a queue, as detailed in @eq by sending an mailbox
9853 * command, specific to the type of queue, to the HBA.
9855 * The @eq struct is used to get the queue ID of the queue to destroy.
9857 * On success this function will return a zero. If the queue destroy mailbox
9858 * command fails this function will return ENXIO.
9861 lpfc_eq_destroy(struct lpfc_hba *phba, struct lpfc_queue *eq)
9864 int rc, length, status = 0;
9865 uint32_t shdr_status, shdr_add_status;
9866 union lpfc_sli4_cfg_shdr *shdr;
9870 mbox = mempool_alloc(eq->phba->mbox_mem_pool, GFP_KERNEL);
9873 length = (sizeof(struct lpfc_mbx_eq_destroy) -
9874 sizeof(struct lpfc_sli4_cfg_mhdr));
9875 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
9876 LPFC_MBOX_OPCODE_EQ_DESTROY,
9877 length, LPFC_SLI4_MBX_EMBED);
9878 bf_set(lpfc_mbx_eq_destroy_q_id, &mbox->u.mqe.un.eq_destroy.u.request,
9880 mbox->vport = eq->phba->pport;
9881 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
9883 rc = lpfc_sli_issue_mbox(eq->phba, mbox, MBX_POLL);
9884 /* The IOCTL status is embedded in the mailbox subheader. */
9885 shdr = (union lpfc_sli4_cfg_shdr *)
9886 &mbox->u.mqe.un.eq_destroy.header.cfg_shdr;
9887 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9888 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9889 if (shdr_status || shdr_add_status || rc) {
9890 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9891 "2505 EQ_DESTROY mailbox failed with "
9892 "status x%x add_status x%x, mbx status x%x\n",
9893 shdr_status, shdr_add_status, rc);
9897 /* Remove eq from any list */
9898 list_del_init(&eq->list);
9899 if (rc != MBX_TIMEOUT)
9900 mempool_free(mbox, eq->phba->mbox_mem_pool);
9905 * lpfc_cq_destroy - Destroy a Completion Queue on the HBA
9906 * @cq: The queue structure associated with the queue to destroy.
9908 * This function destroys a queue, as detailed in @cq by sending an mailbox
9909 * command, specific to the type of queue, to the HBA.
9911 * The @cq struct is used to get the queue ID of the queue to destroy.
9913 * On success this function will return a zero. If the queue destroy mailbox
9914 * command fails this function will return ENXIO.
9917 lpfc_cq_destroy(struct lpfc_hba *phba, struct lpfc_queue *cq)
9920 int rc, length, status = 0;
9921 uint32_t shdr_status, shdr_add_status;
9922 union lpfc_sli4_cfg_shdr *shdr;
9926 mbox = mempool_alloc(cq->phba->mbox_mem_pool, GFP_KERNEL);
9929 length = (sizeof(struct lpfc_mbx_cq_destroy) -
9930 sizeof(struct lpfc_sli4_cfg_mhdr));
9931 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
9932 LPFC_MBOX_OPCODE_CQ_DESTROY,
9933 length, LPFC_SLI4_MBX_EMBED);
9934 bf_set(lpfc_mbx_cq_destroy_q_id, &mbox->u.mqe.un.cq_destroy.u.request,
9936 mbox->vport = cq->phba->pport;
9937 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
9938 rc = lpfc_sli_issue_mbox(cq->phba, mbox, MBX_POLL);
9939 /* The IOCTL status is embedded in the mailbox subheader. */
9940 shdr = (union lpfc_sli4_cfg_shdr *)
9941 &mbox->u.mqe.un.wq_create.header.cfg_shdr;
9942 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9943 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9944 if (shdr_status || shdr_add_status || rc) {
9945 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9946 "2506 CQ_DESTROY mailbox failed with "
9947 "status x%x add_status x%x, mbx status x%x\n",
9948 shdr_status, shdr_add_status, rc);
9951 /* Remove cq from any list */
9952 list_del_init(&cq->list);
9953 if (rc != MBX_TIMEOUT)
9954 mempool_free(mbox, cq->phba->mbox_mem_pool);
9959 * lpfc_mq_destroy - Destroy a Mailbox Queue on the HBA
9960 * @qm: The queue structure associated with the queue to destroy.
9962 * This function destroys a queue, as detailed in @mq by sending an mailbox
9963 * command, specific to the type of queue, to the HBA.
9965 * The @mq struct is used to get the queue ID of the queue to destroy.
9967 * On success this function will return a zero. If the queue destroy mailbox
9968 * command fails this function will return ENXIO.
9971 lpfc_mq_destroy(struct lpfc_hba *phba, struct lpfc_queue *mq)
9974 int rc, length, status = 0;
9975 uint32_t shdr_status, shdr_add_status;
9976 union lpfc_sli4_cfg_shdr *shdr;
9980 mbox = mempool_alloc(mq->phba->mbox_mem_pool, GFP_KERNEL);
9983 length = (sizeof(struct lpfc_mbx_mq_destroy) -
9984 sizeof(struct lpfc_sli4_cfg_mhdr));
9985 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
9986 LPFC_MBOX_OPCODE_MQ_DESTROY,
9987 length, LPFC_SLI4_MBX_EMBED);
9988 bf_set(lpfc_mbx_mq_destroy_q_id, &mbox->u.mqe.un.mq_destroy.u.request,
9990 mbox->vport = mq->phba->pport;
9991 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
9992 rc = lpfc_sli_issue_mbox(mq->phba, mbox, MBX_POLL);
9993 /* The IOCTL status is embedded in the mailbox subheader. */
9994 shdr = (union lpfc_sli4_cfg_shdr *)
9995 &mbox->u.mqe.un.mq_destroy.header.cfg_shdr;
9996 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9997 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9998 if (shdr_status || shdr_add_status || rc) {
9999 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10000 "2507 MQ_DESTROY mailbox failed with "
10001 "status x%x add_status x%x, mbx status x%x\n",
10002 shdr_status, shdr_add_status, rc);
10005 /* Remove mq from any list */
10006 list_del_init(&mq->list);
10007 if (rc != MBX_TIMEOUT)
10008 mempool_free(mbox, mq->phba->mbox_mem_pool);
10013 * lpfc_wq_destroy - Destroy a Work Queue on the HBA
10014 * @wq: The queue structure associated with the queue to destroy.
10016 * This function destroys a queue, as detailed in @wq by sending an mailbox
10017 * command, specific to the type of queue, to the HBA.
10019 * The @wq struct is used to get the queue ID of the queue to destroy.
10021 * On success this function will return a zero. If the queue destroy mailbox
10022 * command fails this function will return ENXIO.
10025 lpfc_wq_destroy(struct lpfc_hba *phba, struct lpfc_queue *wq)
10027 LPFC_MBOXQ_t *mbox;
10028 int rc, length, status = 0;
10029 uint32_t shdr_status, shdr_add_status;
10030 union lpfc_sli4_cfg_shdr *shdr;
10034 mbox = mempool_alloc(wq->phba->mbox_mem_pool, GFP_KERNEL);
10037 length = (sizeof(struct lpfc_mbx_wq_destroy) -
10038 sizeof(struct lpfc_sli4_cfg_mhdr));
10039 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
10040 LPFC_MBOX_OPCODE_FCOE_WQ_DESTROY,
10041 length, LPFC_SLI4_MBX_EMBED);
10042 bf_set(lpfc_mbx_wq_destroy_q_id, &mbox->u.mqe.un.wq_destroy.u.request,
10044 mbox->vport = wq->phba->pport;
10045 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
10046 rc = lpfc_sli_issue_mbox(wq->phba, mbox, MBX_POLL);
10047 shdr = (union lpfc_sli4_cfg_shdr *)
10048 &mbox->u.mqe.un.wq_destroy.header.cfg_shdr;
10049 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
10050 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
10051 if (shdr_status || shdr_add_status || rc) {
10052 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10053 "2508 WQ_DESTROY mailbox failed with "
10054 "status x%x add_status x%x, mbx status x%x\n",
10055 shdr_status, shdr_add_status, rc);
10058 /* Remove wq from any list */
10059 list_del_init(&wq->list);
10060 if (rc != MBX_TIMEOUT)
10061 mempool_free(mbox, wq->phba->mbox_mem_pool);
10066 * lpfc_rq_destroy - Destroy a Receive Queue on the HBA
10067 * @rq: The queue structure associated with the queue to destroy.
10069 * This function destroys a queue, as detailed in @rq by sending an mailbox
10070 * command, specific to the type of queue, to the HBA.
10072 * The @rq struct is used to get the queue ID of the queue to destroy.
10074 * On success this function will return a zero. If the queue destroy mailbox
10075 * command fails this function will return ENXIO.
10078 lpfc_rq_destroy(struct lpfc_hba *phba, struct lpfc_queue *hrq,
10079 struct lpfc_queue *drq)
10081 LPFC_MBOXQ_t *mbox;
10082 int rc, length, status = 0;
10083 uint32_t shdr_status, shdr_add_status;
10084 union lpfc_sli4_cfg_shdr *shdr;
10088 mbox = mempool_alloc(hrq->phba->mbox_mem_pool, GFP_KERNEL);
10091 length = (sizeof(struct lpfc_mbx_rq_destroy) -
10092 sizeof(struct mbox_header));
10093 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
10094 LPFC_MBOX_OPCODE_FCOE_RQ_DESTROY,
10095 length, LPFC_SLI4_MBX_EMBED);
10096 bf_set(lpfc_mbx_rq_destroy_q_id, &mbox->u.mqe.un.rq_destroy.u.request,
10098 mbox->vport = hrq->phba->pport;
10099 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
10100 rc = lpfc_sli_issue_mbox(hrq->phba, mbox, MBX_POLL);
10101 /* The IOCTL status is embedded in the mailbox subheader. */
10102 shdr = (union lpfc_sli4_cfg_shdr *)
10103 &mbox->u.mqe.un.rq_destroy.header.cfg_shdr;
10104 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
10105 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
10106 if (shdr_status || shdr_add_status || rc) {
10107 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10108 "2509 RQ_DESTROY mailbox failed with "
10109 "status x%x add_status x%x, mbx status x%x\n",
10110 shdr_status, shdr_add_status, rc);
10111 if (rc != MBX_TIMEOUT)
10112 mempool_free(mbox, hrq->phba->mbox_mem_pool);
10115 bf_set(lpfc_mbx_rq_destroy_q_id, &mbox->u.mqe.un.rq_destroy.u.request,
10117 rc = lpfc_sli_issue_mbox(drq->phba, mbox, MBX_POLL);
10118 shdr = (union lpfc_sli4_cfg_shdr *)
10119 &mbox->u.mqe.un.rq_destroy.header.cfg_shdr;
10120 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
10121 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
10122 if (shdr_status || shdr_add_status || rc) {
10123 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10124 "2510 RQ_DESTROY mailbox failed with "
10125 "status x%x add_status x%x, mbx status x%x\n",
10126 shdr_status, shdr_add_status, rc);
10129 list_del_init(&hrq->list);
10130 list_del_init(&drq->list);
10131 if (rc != MBX_TIMEOUT)
10132 mempool_free(mbox, hrq->phba->mbox_mem_pool);
10137 * lpfc_sli4_post_sgl - Post scatter gather list for an XRI to HBA
10138 * @phba: The virtual port for which this call being executed.
10139 * @pdma_phys_addr0: Physical address of the 1st SGL page.
10140 * @pdma_phys_addr1: Physical address of the 2nd SGL page.
10141 * @xritag: the xritag that ties this io to the SGL pages.
10143 * This routine will post the sgl pages for the IO that has the xritag
10144 * that is in the iocbq structure. The xritag is assigned during iocbq
10145 * creation and persists for as long as the driver is loaded.
10146 * if the caller has fewer than 256 scatter gather segments to map then
10147 * pdma_phys_addr1 should be 0.
10148 * If the caller needs to map more than 256 scatter gather segment then
10149 * pdma_phys_addr1 should be a valid physical address.
10150 * physical address for SGLs must be 64 byte aligned.
10151 * If you are going to map 2 SGL's then the first one must have 256 entries
10152 * the second sgl can have between 1 and 256 entries.
10156 * -ENXIO, -ENOMEM - Failure
10159 lpfc_sli4_post_sgl(struct lpfc_hba *phba,
10160 dma_addr_t pdma_phys_addr0,
10161 dma_addr_t pdma_phys_addr1,
10164 struct lpfc_mbx_post_sgl_pages *post_sgl_pages;
10165 LPFC_MBOXQ_t *mbox;
10167 uint32_t shdr_status, shdr_add_status;
10168 union lpfc_sli4_cfg_shdr *shdr;
10170 if (xritag == NO_XRI) {
10171 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
10172 "0364 Invalid param:\n");
10176 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
10180 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
10181 LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES,
10182 sizeof(struct lpfc_mbx_post_sgl_pages) -
10183 sizeof(struct mbox_header), LPFC_SLI4_MBX_EMBED);
10185 post_sgl_pages = (struct lpfc_mbx_post_sgl_pages *)
10186 &mbox->u.mqe.un.post_sgl_pages;
10187 bf_set(lpfc_post_sgl_pages_xri, post_sgl_pages, xritag);
10188 bf_set(lpfc_post_sgl_pages_xricnt, post_sgl_pages, 1);
10190 post_sgl_pages->sgl_pg_pairs[0].sgl_pg0_addr_lo =
10191 cpu_to_le32(putPaddrLow(pdma_phys_addr0));
10192 post_sgl_pages->sgl_pg_pairs[0].sgl_pg0_addr_hi =
10193 cpu_to_le32(putPaddrHigh(pdma_phys_addr0));
10195 post_sgl_pages->sgl_pg_pairs[0].sgl_pg1_addr_lo =
10196 cpu_to_le32(putPaddrLow(pdma_phys_addr1));
10197 post_sgl_pages->sgl_pg_pairs[0].sgl_pg1_addr_hi =
10198 cpu_to_le32(putPaddrHigh(pdma_phys_addr1));
10199 if (!phba->sli4_hba.intr_enable)
10200 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
10202 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
10203 /* The IOCTL status is embedded in the mailbox subheader. */
10204 shdr = (union lpfc_sli4_cfg_shdr *) &post_sgl_pages->header.cfg_shdr;
10205 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
10206 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
10207 if (rc != MBX_TIMEOUT)
10208 mempool_free(mbox, phba->mbox_mem_pool);
10209 if (shdr_status || shdr_add_status || rc) {
10210 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10211 "2511 POST_SGL mailbox failed with "
10212 "status x%x add_status x%x, mbx status x%x\n",
10213 shdr_status, shdr_add_status, rc);
10219 * lpfc_sli4_remove_all_sgl_pages - Post scatter gather list for an XRI to HBA
10220 * @phba: The virtual port for which this call being executed.
10222 * This routine will remove all of the sgl pages registered with the hba.
10226 * -ENXIO, -ENOMEM - Failure
10229 lpfc_sli4_remove_all_sgl_pages(struct lpfc_hba *phba)
10231 LPFC_MBOXQ_t *mbox;
10233 uint32_t shdr_status, shdr_add_status;
10234 union lpfc_sli4_cfg_shdr *shdr;
10236 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
10240 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
10241 LPFC_MBOX_OPCODE_FCOE_REMOVE_SGL_PAGES, 0,
10242 LPFC_SLI4_MBX_EMBED);
10243 if (!phba->sli4_hba.intr_enable)
10244 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
10246 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
10247 /* The IOCTL status is embedded in the mailbox subheader. */
10248 shdr = (union lpfc_sli4_cfg_shdr *)
10249 &mbox->u.mqe.un.sli4_config.header.cfg_shdr;
10250 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
10251 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
10252 if (rc != MBX_TIMEOUT)
10253 mempool_free(mbox, phba->mbox_mem_pool);
10254 if (shdr_status || shdr_add_status || rc) {
10255 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10256 "2512 REMOVE_ALL_SGL_PAGES mailbox failed with "
10257 "status x%x add_status x%x, mbx status x%x\n",
10258 shdr_status, shdr_add_status, rc);
10265 * lpfc_sli4_next_xritag - Get an xritag for the io
10266 * @phba: Pointer to HBA context object.
10268 * This function gets an xritag for the iocb. If there is no unused xritag
10269 * it will return 0xffff.
10270 * The function returns the allocated xritag if successful, else returns zero.
10271 * Zero is not a valid xritag.
10272 * The caller is not required to hold any lock.
10275 lpfc_sli4_next_xritag(struct lpfc_hba *phba)
10279 spin_lock_irq(&phba->hbalock);
10280 xritag = phba->sli4_hba.next_xri;
10281 if ((xritag != (uint16_t) -1) && xritag <
10282 (phba->sli4_hba.max_cfg_param.max_xri
10283 + phba->sli4_hba.max_cfg_param.xri_base)) {
10284 phba->sli4_hba.next_xri++;
10285 phba->sli4_hba.max_cfg_param.xri_used++;
10286 spin_unlock_irq(&phba->hbalock);
10289 spin_unlock_irq(&phba->hbalock);
10291 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
10292 "2004 Failed to allocate XRI.last XRITAG is %d"
10293 " Max XRI is %d, Used XRI is %d\n",
10294 phba->sli4_hba.next_xri,
10295 phba->sli4_hba.max_cfg_param.max_xri,
10296 phba->sli4_hba.max_cfg_param.xri_used);
10301 * lpfc_sli4_post_sgl_list - post a block of sgl list to the firmware.
10302 * @phba: pointer to lpfc hba data structure.
10304 * This routine is invoked to post a block of driver's sgl pages to the
10305 * HBA using non-embedded mailbox command. No Lock is held. This routine
10306 * is only called when the driver is loading and after all IO has been
10310 lpfc_sli4_post_sgl_list(struct lpfc_hba *phba)
10312 struct lpfc_sglq *sglq_entry;
10313 struct lpfc_mbx_post_uembed_sgl_page1 *sgl;
10314 struct sgl_page_pairs *sgl_pg_pairs;
10316 LPFC_MBOXQ_t *mbox;
10317 uint32_t reqlen, alloclen, pg_pairs;
10319 uint16_t xritag_start = 0;
10320 int els_xri_cnt, rc = 0;
10321 uint32_t shdr_status, shdr_add_status;
10322 union lpfc_sli4_cfg_shdr *shdr;
10324 /* The number of sgls to be posted */
10325 els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
10327 reqlen = els_xri_cnt * sizeof(struct sgl_page_pairs) +
10328 sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t);
10329 if (reqlen > PAGE_SIZE) {
10330 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
10331 "2559 Block sgl registration required DMA "
10332 "size (%d) great than a page\n", reqlen);
10335 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
10337 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10338 "2560 Failed to allocate mbox cmd memory\n");
10342 /* Allocate DMA memory and set up the non-embedded mailbox command */
10343 alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
10344 LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, reqlen,
10345 LPFC_SLI4_MBX_NEMBED);
10347 if (alloclen < reqlen) {
10348 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10349 "0285 Allocated DMA memory size (%d) is "
10350 "less than the requested DMA memory "
10351 "size (%d)\n", alloclen, reqlen);
10352 lpfc_sli4_mbox_cmd_free(phba, mbox);
10356 /* Get the first SGE entry from the non-embedded DMA memory */
10357 if (unlikely(!mbox->sge_array)) {
10358 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
10359 "2525 Failed to get the non-embedded SGE "
10360 "virtual address\n");
10361 lpfc_sli4_mbox_cmd_free(phba, mbox);
10364 viraddr = mbox->sge_array->addr[0];
10366 /* Set up the SGL pages in the non-embedded DMA pages */
10367 sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr;
10368 sgl_pg_pairs = &sgl->sgl_pg_pairs;
10370 for (pg_pairs = 0; pg_pairs < els_xri_cnt; pg_pairs++) {
10371 sglq_entry = phba->sli4_hba.lpfc_els_sgl_array[pg_pairs];
10372 /* Set up the sge entry */
10373 sgl_pg_pairs->sgl_pg0_addr_lo =
10374 cpu_to_le32(putPaddrLow(sglq_entry->phys));
10375 sgl_pg_pairs->sgl_pg0_addr_hi =
10376 cpu_to_le32(putPaddrHigh(sglq_entry->phys));
10377 sgl_pg_pairs->sgl_pg1_addr_lo =
10378 cpu_to_le32(putPaddrLow(0));
10379 sgl_pg_pairs->sgl_pg1_addr_hi =
10380 cpu_to_le32(putPaddrHigh(0));
10381 /* Keep the first xritag on the list */
10383 xritag_start = sglq_entry->sli4_xritag;
10386 bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start);
10387 pg_pairs = (pg_pairs > 0) ? (pg_pairs - 1) : pg_pairs;
10388 bf_set(lpfc_post_sgl_pages_xricnt, sgl, pg_pairs);
10389 /* Perform endian conversion if necessary */
10390 sgl->word0 = cpu_to_le32(sgl->word0);
10392 if (!phba->sli4_hba.intr_enable)
10393 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
10395 mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG);
10396 rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
10398 shdr = (union lpfc_sli4_cfg_shdr *) &sgl->cfg_shdr;
10399 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
10400 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
10401 if (rc != MBX_TIMEOUT)
10402 lpfc_sli4_mbox_cmd_free(phba, mbox);
10403 if (shdr_status || shdr_add_status || rc) {
10404 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
10405 "2513 POST_SGL_BLOCK mailbox command failed "
10406 "status x%x add_status x%x mbx status x%x\n",
10407 shdr_status, shdr_add_status, rc);
10414 * lpfc_sli4_post_scsi_sgl_block - post a block of scsi sgl list to firmware
10415 * @phba: pointer to lpfc hba data structure.
10416 * @sblist: pointer to scsi buffer list.
10417 * @count: number of scsi buffers on the list.
10419 * This routine is invoked to post a block of @count scsi sgl pages from a
10420 * SCSI buffer list @sblist to the HBA using non-embedded mailbox command.
10425 lpfc_sli4_post_scsi_sgl_block(struct lpfc_hba *phba, struct list_head *sblist,
10428 struct lpfc_scsi_buf *psb;
10429 struct lpfc_mbx_post_uembed_sgl_page1 *sgl;
10430 struct sgl_page_pairs *sgl_pg_pairs;
10432 LPFC_MBOXQ_t *mbox;
10433 uint32_t reqlen, alloclen, pg_pairs;
10435 uint16_t xritag_start = 0;
10437 uint32_t shdr_status, shdr_add_status;
10438 dma_addr_t pdma_phys_bpl1;
10439 union lpfc_sli4_cfg_shdr *shdr;
10441 /* Calculate the requested length of the dma memory */
10442 reqlen = cnt * sizeof(struct sgl_page_pairs) +
10443 sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t);
10444 if (reqlen > PAGE_SIZE) {
10445 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
10446 "0217 Block sgl registration required DMA "
10447 "size (%d) great than a page\n", reqlen);
10450 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
10452 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10453 "0283 Failed to allocate mbox cmd memory\n");
10457 /* Allocate DMA memory and set up the non-embedded mailbox command */
10458 alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
10459 LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, reqlen,
10460 LPFC_SLI4_MBX_NEMBED);
10462 if (alloclen < reqlen) {
10463 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10464 "2561 Allocated DMA memory size (%d) is "
10465 "less than the requested DMA memory "
10466 "size (%d)\n", alloclen, reqlen);
10467 lpfc_sli4_mbox_cmd_free(phba, mbox);
10471 /* Get the first SGE entry from the non-embedded DMA memory */
10472 if (unlikely(!mbox->sge_array)) {
10473 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
10474 "2565 Failed to get the non-embedded SGE "
10475 "virtual address\n");
10476 lpfc_sli4_mbox_cmd_free(phba, mbox);
10479 viraddr = mbox->sge_array->addr[0];
10481 /* Set up the SGL pages in the non-embedded DMA pages */
10482 sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr;
10483 sgl_pg_pairs = &sgl->sgl_pg_pairs;
10486 list_for_each_entry(psb, sblist, list) {
10487 /* Set up the sge entry */
10488 sgl_pg_pairs->sgl_pg0_addr_lo =
10489 cpu_to_le32(putPaddrLow(psb->dma_phys_bpl));
10490 sgl_pg_pairs->sgl_pg0_addr_hi =
10491 cpu_to_le32(putPaddrHigh(psb->dma_phys_bpl));
10492 if (phba->cfg_sg_dma_buf_size > SGL_PAGE_SIZE)
10493 pdma_phys_bpl1 = psb->dma_phys_bpl + SGL_PAGE_SIZE;
10495 pdma_phys_bpl1 = 0;
10496 sgl_pg_pairs->sgl_pg1_addr_lo =
10497 cpu_to_le32(putPaddrLow(pdma_phys_bpl1));
10498 sgl_pg_pairs->sgl_pg1_addr_hi =
10499 cpu_to_le32(putPaddrHigh(pdma_phys_bpl1));
10500 /* Keep the first xritag on the list */
10502 xritag_start = psb->cur_iocbq.sli4_xritag;
10506 bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start);
10507 bf_set(lpfc_post_sgl_pages_xricnt, sgl, pg_pairs);
10508 /* Perform endian conversion if necessary */
10509 sgl->word0 = cpu_to_le32(sgl->word0);
10511 if (!phba->sli4_hba.intr_enable)
10512 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
10514 mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG);
10515 rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
10517 shdr = (union lpfc_sli4_cfg_shdr *) &sgl->cfg_shdr;
10518 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
10519 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
10520 if (rc != MBX_TIMEOUT)
10521 lpfc_sli4_mbox_cmd_free(phba, mbox);
10522 if (shdr_status || shdr_add_status || rc) {
10523 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
10524 "2564 POST_SGL_BLOCK mailbox command failed "
10525 "status x%x add_status x%x mbx status x%x\n",
10526 shdr_status, shdr_add_status, rc);
10533 * lpfc_fc_frame_check - Check that this frame is a valid frame to handle
10534 * @phba: pointer to lpfc_hba struct that the frame was received on
10535 * @fc_hdr: A pointer to the FC Header data (In Big Endian Format)
10537 * This function checks the fields in the @fc_hdr to see if the FC frame is a
10538 * valid type of frame that the LPFC driver will handle. This function will
10539 * return a zero if the frame is a valid frame or a non zero value when the
10540 * frame does not pass the check.
10543 lpfc_fc_frame_check(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr)
10545 char *rctl_names[] = FC_RCTL_NAMES_INIT;
10546 char *type_names[] = FC_TYPE_NAMES_INIT;
10547 struct fc_vft_header *fc_vft_hdr;
10549 switch (fc_hdr->fh_r_ctl) {
10550 case FC_RCTL_DD_UNCAT: /* uncategorized information */
10551 case FC_RCTL_DD_SOL_DATA: /* solicited data */
10552 case FC_RCTL_DD_UNSOL_CTL: /* unsolicited control */
10553 case FC_RCTL_DD_SOL_CTL: /* solicited control or reply */
10554 case FC_RCTL_DD_UNSOL_DATA: /* unsolicited data */
10555 case FC_RCTL_DD_DATA_DESC: /* data descriptor */
10556 case FC_RCTL_DD_UNSOL_CMD: /* unsolicited command */
10557 case FC_RCTL_DD_CMD_STATUS: /* command status */
10558 case FC_RCTL_ELS_REQ: /* extended link services request */
10559 case FC_RCTL_ELS_REP: /* extended link services reply */
10560 case FC_RCTL_ELS4_REQ: /* FC-4 ELS request */
10561 case FC_RCTL_ELS4_REP: /* FC-4 ELS reply */
10562 case FC_RCTL_BA_NOP: /* basic link service NOP */
10563 case FC_RCTL_BA_ABTS: /* basic link service abort */
10564 case FC_RCTL_BA_RMC: /* remove connection */
10565 case FC_RCTL_BA_ACC: /* basic accept */
10566 case FC_RCTL_BA_RJT: /* basic reject */
10567 case FC_RCTL_BA_PRMT:
10568 case FC_RCTL_ACK_1: /* acknowledge_1 */
10569 case FC_RCTL_ACK_0: /* acknowledge_0 */
10570 case FC_RCTL_P_RJT: /* port reject */
10571 case FC_RCTL_F_RJT: /* fabric reject */
10572 case FC_RCTL_P_BSY: /* port busy */
10573 case FC_RCTL_F_BSY: /* fabric busy to data frame */
10574 case FC_RCTL_F_BSYL: /* fabric busy to link control frame */
10575 case FC_RCTL_LCR: /* link credit reset */
10576 case FC_RCTL_END: /* end */
10578 case FC_RCTL_VFTH: /* Virtual Fabric tagging Header */
10579 fc_vft_hdr = (struct fc_vft_header *)fc_hdr;
10580 fc_hdr = &((struct fc_frame_header *)fc_vft_hdr)[1];
10581 return lpfc_fc_frame_check(phba, fc_hdr);
10585 switch (fc_hdr->fh_type) {
10596 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
10597 "2538 Received frame rctl:%s type:%s\n",
10598 rctl_names[fc_hdr->fh_r_ctl],
10599 type_names[fc_hdr->fh_type]);
10602 lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
10603 "2539 Dropped frame rctl:%s type:%s\n",
10604 rctl_names[fc_hdr->fh_r_ctl],
10605 type_names[fc_hdr->fh_type]);
10610 * lpfc_fc_hdr_get_vfi - Get the VFI from an FC frame
10611 * @fc_hdr: A pointer to the FC Header data (In Big Endian Format)
10613 * This function processes the FC header to retrieve the VFI from the VF
10614 * header, if one exists. This function will return the VFI if one exists
10615 * or 0 if no VSAN Header exists.
10618 lpfc_fc_hdr_get_vfi(struct fc_frame_header *fc_hdr)
10620 struct fc_vft_header *fc_vft_hdr = (struct fc_vft_header *)fc_hdr;
10622 if (fc_hdr->fh_r_ctl != FC_RCTL_VFTH)
10624 return bf_get(fc_vft_hdr_vf_id, fc_vft_hdr);
10628 * lpfc_fc_frame_to_vport - Finds the vport that a frame is destined to
10629 * @phba: Pointer to the HBA structure to search for the vport on
10630 * @fc_hdr: A pointer to the FC Header data (In Big Endian Format)
10631 * @fcfi: The FC Fabric ID that the frame came from
10633 * This function searches the @phba for a vport that matches the content of the
10634 * @fc_hdr passed in and the @fcfi. This function uses the @fc_hdr to fetch the
10635 * VFI, if the Virtual Fabric Tagging Header exists, and the DID. This function
10636 * returns the matching vport pointer or NULL if unable to match frame to a
10639 static struct lpfc_vport *
10640 lpfc_fc_frame_to_vport(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr,
10643 struct lpfc_vport **vports;
10644 struct lpfc_vport *vport = NULL;
10646 uint32_t did = (fc_hdr->fh_d_id[0] << 16 |
10647 fc_hdr->fh_d_id[1] << 8 |
10648 fc_hdr->fh_d_id[2]);
10650 vports = lpfc_create_vport_work_array(phba);
10651 if (vports != NULL)
10652 for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
10653 if (phba->fcf.fcfi == fcfi &&
10654 vports[i]->vfi == lpfc_fc_hdr_get_vfi(fc_hdr) &&
10655 vports[i]->fc_myDID == did) {
10660 lpfc_destroy_vport_work_array(phba, vports);
10665 * lpfc_fc_frame_add - Adds a frame to the vport's list of received sequences
10666 * @dmabuf: pointer to a dmabuf that describes the hdr and data of the FC frame
10668 * This function searches through the existing incomplete sequences that have
10669 * been sent to this @vport. If the frame matches one of the incomplete
10670 * sequences then the dbuf in the @dmabuf is added to the list of frames that
10671 * make up that sequence. If no sequence is found that matches this frame then
10672 * the function will add the hbuf in the @dmabuf to the @vport's rcv_buffer_list
10673 * This function returns a pointer to the first dmabuf in the sequence list that
10674 * the frame was linked to.
10676 static struct hbq_dmabuf *
10677 lpfc_fc_frame_add(struct lpfc_vport *vport, struct hbq_dmabuf *dmabuf)
10679 struct fc_frame_header *new_hdr;
10680 struct fc_frame_header *temp_hdr;
10681 struct lpfc_dmabuf *d_buf;
10682 struct lpfc_dmabuf *h_buf;
10683 struct hbq_dmabuf *seq_dmabuf = NULL;
10684 struct hbq_dmabuf *temp_dmabuf = NULL;
10686 new_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
10687 /* Use the hdr_buf to find the sequence that this frame belongs to */
10688 list_for_each_entry(h_buf, &vport->rcv_buffer_list, list) {
10689 temp_hdr = (struct fc_frame_header *)h_buf->virt;
10690 if ((temp_hdr->fh_seq_id != new_hdr->fh_seq_id) ||
10691 (temp_hdr->fh_ox_id != new_hdr->fh_ox_id) ||
10692 (memcmp(&temp_hdr->fh_s_id, &new_hdr->fh_s_id, 3)))
10694 /* found a pending sequence that matches this frame */
10695 seq_dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf);
10700 * This indicates first frame received for this sequence.
10701 * Queue the buffer on the vport's rcv_buffer_list.
10703 list_add_tail(&dmabuf->hbuf.list, &vport->rcv_buffer_list);
10706 temp_hdr = seq_dmabuf->hbuf.virt;
10707 if (new_hdr->fh_seq_cnt < temp_hdr->fh_seq_cnt) {
10708 list_add(&seq_dmabuf->dbuf.list, &dmabuf->dbuf.list);
10711 /* find the correct place in the sequence to insert this frame */
10712 list_for_each_entry_reverse(d_buf, &seq_dmabuf->dbuf.list, list) {
10713 temp_dmabuf = container_of(d_buf, struct hbq_dmabuf, dbuf);
10714 temp_hdr = (struct fc_frame_header *)temp_dmabuf->hbuf.virt;
10716 * If the frame's sequence count is greater than the frame on
10717 * the list then insert the frame right after this frame
10719 if (new_hdr->fh_seq_cnt > temp_hdr->fh_seq_cnt) {
10720 list_add(&dmabuf->dbuf.list, &temp_dmabuf->dbuf.list);
10728 * lpfc_seq_complete - Indicates if a sequence is complete
10729 * @dmabuf: pointer to a dmabuf that describes the FC sequence
10731 * This function checks the sequence, starting with the frame described by
10732 * @dmabuf, to see if all the frames associated with this sequence are present.
10733 * the frames associated with this sequence are linked to the @dmabuf using the
10734 * dbuf list. This function looks for two major things. 1) That the first frame
10735 * has a sequence count of zero. 2) There is a frame with last frame of sequence
10736 * set. 3) That there are no holes in the sequence count. The function will
10737 * return 1 when the sequence is complete, otherwise it will return 0.
10740 lpfc_seq_complete(struct hbq_dmabuf *dmabuf)
10742 struct fc_frame_header *hdr;
10743 struct lpfc_dmabuf *d_buf;
10744 struct hbq_dmabuf *seq_dmabuf;
10748 hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
10749 /* make sure first fame of sequence has a sequence count of zero */
10750 if (hdr->fh_seq_cnt != seq_count)
10752 fctl = (hdr->fh_f_ctl[0] << 16 |
10753 hdr->fh_f_ctl[1] << 8 |
10755 /* If last frame of sequence we can return success. */
10756 if (fctl & FC_FC_END_SEQ)
10758 list_for_each_entry(d_buf, &dmabuf->dbuf.list, list) {
10759 seq_dmabuf = container_of(d_buf, struct hbq_dmabuf, dbuf);
10760 hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt;
10761 /* If there is a hole in the sequence count then fail. */
10762 if (++seq_count != hdr->fh_seq_cnt)
10764 fctl = (hdr->fh_f_ctl[0] << 16 |
10765 hdr->fh_f_ctl[1] << 8 |
10767 /* If last frame of sequence we can return success. */
10768 if (fctl & FC_FC_END_SEQ)
10775 * lpfc_prep_seq - Prep sequence for ULP processing
10776 * @vport: Pointer to the vport on which this sequence was received
10777 * @dmabuf: pointer to a dmabuf that describes the FC sequence
10779 * This function takes a sequence, described by a list of frames, and creates
10780 * a list of iocbq structures to describe the sequence. This iocbq list will be
10781 * used to issue to the generic unsolicited sequence handler. This routine
10782 * returns a pointer to the first iocbq in the list. If the function is unable
10783 * to allocate an iocbq then it throw out the received frames that were not
10784 * able to be described and return a pointer to the first iocbq. If unable to
10785 * allocate any iocbqs (including the first) this function will return NULL.
10787 static struct lpfc_iocbq *
10788 lpfc_prep_seq(struct lpfc_vport *vport, struct hbq_dmabuf *seq_dmabuf)
10790 struct lpfc_dmabuf *d_buf, *n_buf;
10791 struct lpfc_iocbq *first_iocbq, *iocbq;
10792 struct fc_frame_header *fc_hdr;
10795 fc_hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt;
10796 /* remove from receive buffer list */
10797 list_del_init(&seq_dmabuf->hbuf.list);
10798 /* get the Remote Port's SID */
10799 sid = (fc_hdr->fh_s_id[0] << 16 |
10800 fc_hdr->fh_s_id[1] << 8 |
10801 fc_hdr->fh_s_id[2]);
10802 /* Get an iocbq struct to fill in. */
10803 first_iocbq = lpfc_sli_get_iocbq(vport->phba);
10805 /* Initialize the first IOCB. */
10806 first_iocbq->iocb.ulpStatus = IOSTAT_SUCCESS;
10807 first_iocbq->iocb.ulpCommand = CMD_IOCB_RCV_SEQ64_CX;
10808 first_iocbq->iocb.ulpContext = be16_to_cpu(fc_hdr->fh_ox_id);
10809 first_iocbq->iocb.unsli3.rcvsli3.vpi =
10810 vport->vpi + vport->phba->vpi_base;
10811 /* put the first buffer into the first IOCBq */
10812 first_iocbq->context2 = &seq_dmabuf->dbuf;
10813 first_iocbq->context3 = NULL;
10814 first_iocbq->iocb.ulpBdeCount = 1;
10815 first_iocbq->iocb.un.cont64[0].tus.f.bdeSize =
10816 LPFC_DATA_BUF_SIZE;
10817 first_iocbq->iocb.un.rcvels.remoteID = sid;
10819 iocbq = first_iocbq;
10821 * Each IOCBq can have two Buffers assigned, so go through the list
10822 * of buffers for this sequence and save two buffers in each IOCBq
10824 list_for_each_entry_safe(d_buf, n_buf, &seq_dmabuf->dbuf.list, list) {
10826 lpfc_in_buf_free(vport->phba, d_buf);
10829 if (!iocbq->context3) {
10830 iocbq->context3 = d_buf;
10831 iocbq->iocb.ulpBdeCount++;
10832 iocbq->iocb.unsli3.rcvsli3.bde2.tus.f.bdeSize =
10833 LPFC_DATA_BUF_SIZE;
10835 iocbq = lpfc_sli_get_iocbq(vport->phba);
10838 first_iocbq->iocb.ulpStatus =
10839 IOSTAT_FCP_RSP_ERROR;
10840 first_iocbq->iocb.un.ulpWord[4] =
10841 IOERR_NO_RESOURCES;
10843 lpfc_in_buf_free(vport->phba, d_buf);
10846 iocbq->context2 = d_buf;
10847 iocbq->context3 = NULL;
10848 iocbq->iocb.ulpBdeCount = 1;
10849 iocbq->iocb.un.cont64[0].tus.f.bdeSize =
10850 LPFC_DATA_BUF_SIZE;
10851 iocbq->iocb.un.rcvels.remoteID = sid;
10852 list_add_tail(&iocbq->list, &first_iocbq->list);
10855 return first_iocbq;
10859 * lpfc_sli4_handle_received_buffer - Handle received buffers from firmware
10860 * @phba: Pointer to HBA context object.
10862 * This function is called with no lock held. This function processes all
10863 * the received buffers and gives it to upper layers when a received buffer
10864 * indicates that it is the final frame in the sequence. The interrupt
10865 * service routine processes received buffers at interrupt contexts and adds
10866 * received dma buffers to the rb_pend_list queue and signals the worker thread.
10867 * Worker thread calls lpfc_sli4_handle_received_buffer, which will call the
10868 * appropriate receive function when the final frame in a sequence is received.
10871 lpfc_sli4_handle_received_buffer(struct lpfc_hba *phba)
10874 struct hbq_dmabuf *dmabuf, *seq_dmabuf;
10875 struct fc_frame_header *fc_hdr;
10876 struct lpfc_vport *vport;
10878 struct lpfc_iocbq *iocbq;
10880 /* Clear hba flag and get all received buffers into the cmplq */
10881 spin_lock_irq(&phba->hbalock);
10882 phba->hba_flag &= ~HBA_RECEIVE_BUFFER;
10883 list_splice_init(&phba->rb_pend_list, &cmplq);
10884 spin_unlock_irq(&phba->hbalock);
10886 /* Process each received buffer */
10887 while ((dmabuf = lpfc_sli_hbqbuf_get(&cmplq)) != NULL) {
10888 fc_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
10889 /* check to see if this a valid type of frame */
10890 if (lpfc_fc_frame_check(phba, fc_hdr)) {
10891 lpfc_in_buf_free(phba, &dmabuf->dbuf);
10894 fcfi = bf_get(lpfc_rcqe_fcf_id, &dmabuf->rcqe);
10895 vport = lpfc_fc_frame_to_vport(phba, fc_hdr, fcfi);
10897 /* throw out the frame */
10898 lpfc_in_buf_free(phba, &dmabuf->dbuf);
10901 /* Link this frame */
10902 seq_dmabuf = lpfc_fc_frame_add(vport, dmabuf);
10904 /* unable to add frame to vport - throw it out */
10905 lpfc_in_buf_free(phba, &dmabuf->dbuf);
10908 /* If not last frame in sequence continue processing frames. */
10909 if (!lpfc_seq_complete(seq_dmabuf)) {
10911 * When saving off frames post a new one and mark this
10912 * frame to be freed when it is finished.
10914 lpfc_sli_hbqbuf_fill_hbqs(phba, LPFC_ELS_HBQ, 1);
10918 fc_hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt;
10919 iocbq = lpfc_prep_seq(vport, seq_dmabuf);
10920 if (!lpfc_complete_unsol_iocb(phba,
10921 &phba->sli.ring[LPFC_ELS_RING],
10922 iocbq, fc_hdr->fh_r_ctl,
10924 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
10925 "2540 Ring %d handler: unexpected Rctl "
10926 "x%x Type x%x received\n",
10928 fc_hdr->fh_r_ctl, fc_hdr->fh_type);