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-rw-r--r--drivers/scsi/lpfc/lpfc_sli.c3382
1 files changed, 3382 insertions, 0 deletions
diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c
index 706bb22a6e8e..cf42ada3ffcd 100644
--- a/drivers/scsi/lpfc/lpfc_sli.c
+++ b/drivers/scsi/lpfc/lpfc_sli.c
@@ -70,6 +70,350 @@ typedef enum _lpfc_iocb_type {
70 LPFC_ABORT_IOCB 70 LPFC_ABORT_IOCB
71} lpfc_iocb_type; 71} lpfc_iocb_type;
72 72
73
74/* Provide function prototypes local to this module. */
75static int lpfc_sli_issue_mbox_s4(struct lpfc_hba *, LPFC_MBOXQ_t *,
76 uint32_t);
77static int lpfc_sli4_read_rev(struct lpfc_hba *, LPFC_MBOXQ_t *,
78 uint8_t *, uint32_t *);
79
80static IOCB_t *
81lpfc_get_iocb_from_iocbq(struct lpfc_iocbq *iocbq)
82{
83 return &iocbq->iocb;
84}
85
86/**
87 * lpfc_sli4_wq_put - Put a Work Queue Entry on an Work Queue
88 * @q: The Work Queue to operate on.
89 * @wqe: The work Queue Entry to put on the Work queue.
90 *
91 * This routine will copy the contents of @wqe to the next available entry on
92 * the @q. This function will then ring the Work Queue Doorbell to signal the
93 * HBA to start processing the Work Queue Entry. This function returns 0 if
94 * successful. If no entries are available on @q then this function will return
95 * -ENOMEM.
96 * The caller is expected to hold the hbalock when calling this routine.
97 **/
98static uint32_t
99lpfc_sli4_wq_put(struct lpfc_queue *q, union lpfc_wqe *wqe)
100{
101 union lpfc_wqe *temp_wqe = q->qe[q->host_index].wqe;
102 struct lpfc_register doorbell;
103 uint32_t host_index;
104
105 /* If the host has not yet processed the next entry then we are done */
106 if (((q->host_index + 1) % q->entry_count) == q->hba_index)
107 return -ENOMEM;
108 /* set consumption flag every once in a while */
109 if (!((q->host_index + 1) % LPFC_RELEASE_NOTIFICATION_INTERVAL))
110 bf_set(lpfc_wqe_gen_wqec, &wqe->generic, 1);
111
112 lpfc_sli_pcimem_bcopy(wqe, temp_wqe, q->entry_size);
113
114 /* Update the host index before invoking device */
115 host_index = q->host_index;
116 q->host_index = ((q->host_index + 1) % q->entry_count);
117
118 /* Ring Doorbell */
119 doorbell.word0 = 0;
120 bf_set(lpfc_wq_doorbell_num_posted, &doorbell, 1);
121 bf_set(lpfc_wq_doorbell_index, &doorbell, host_index);
122 bf_set(lpfc_wq_doorbell_id, &doorbell, q->queue_id);
123 writel(doorbell.word0, q->phba->sli4_hba.WQDBregaddr);
124 readl(q->phba->sli4_hba.WQDBregaddr); /* Flush */
125
126 return 0;
127}
128
129/**
130 * lpfc_sli4_wq_release - Updates internal hba index for WQ
131 * @q: The Work Queue to operate on.
132 * @index: The index to advance the hba index to.
133 *
134 * This routine will update the HBA index of a queue to reflect consumption of
135 * Work Queue Entries by the HBA. When the HBA indicates that it has consumed
136 * an entry the host calls this function to update the queue's internal
137 * pointers. This routine returns the number of entries that were consumed by
138 * the HBA.
139 **/
140static uint32_t
141lpfc_sli4_wq_release(struct lpfc_queue *q, uint32_t index)
142{
143 uint32_t released = 0;
144
145 if (q->hba_index == index)
146 return 0;
147 do {
148 q->hba_index = ((q->hba_index + 1) % q->entry_count);
149 released++;
150 } while (q->hba_index != index);
151 return released;
152}
153
154/**
155 * lpfc_sli4_mq_put - Put a Mailbox Queue Entry on an Mailbox Queue
156 * @q: The Mailbox Queue to operate on.
157 * @wqe: The Mailbox Queue Entry to put on the Work queue.
158 *
159 * This routine will copy the contents of @mqe to the next available entry on
160 * the @q. This function will then ring the Work Queue Doorbell to signal the
161 * HBA to start processing the Work Queue Entry. This function returns 0 if
162 * successful. If no entries are available on @q then this function will return
163 * -ENOMEM.
164 * The caller is expected to hold the hbalock when calling this routine.
165 **/
166static uint32_t
167lpfc_sli4_mq_put(struct lpfc_queue *q, struct lpfc_mqe *mqe)
168{
169 struct lpfc_mqe *temp_mqe = q->qe[q->host_index].mqe;
170 struct lpfc_register doorbell;
171 uint32_t host_index;
172
173 /* If the host has not yet processed the next entry then we are done */
174 if (((q->host_index + 1) % q->entry_count) == q->hba_index)
175 return -ENOMEM;
176 lpfc_sli_pcimem_bcopy(mqe, temp_mqe, q->entry_size);
177 /* Save off the mailbox pointer for completion */
178 q->phba->mbox = (MAILBOX_t *)temp_mqe;
179
180 /* Update the host index before invoking device */
181 host_index = q->host_index;
182 q->host_index = ((q->host_index + 1) % q->entry_count);
183
184 /* Ring Doorbell */
185 doorbell.word0 = 0;
186 bf_set(lpfc_mq_doorbell_num_posted, &doorbell, 1);
187 bf_set(lpfc_mq_doorbell_id, &doorbell, q->queue_id);
188 writel(doorbell.word0, q->phba->sli4_hba.MQDBregaddr);
189 readl(q->phba->sli4_hba.MQDBregaddr); /* Flush */
190 return 0;
191}
192
193/**
194 * lpfc_sli4_mq_release - Updates internal hba index for MQ
195 * @q: The Mailbox Queue to operate on.
196 *
197 * This routine will update the HBA index of a queue to reflect consumption of
198 * a Mailbox Queue Entry by the HBA. When the HBA indicates that it has consumed
199 * an entry the host calls this function to update the queue's internal
200 * pointers. This routine returns the number of entries that were consumed by
201 * the HBA.
202 **/
203static uint32_t
204lpfc_sli4_mq_release(struct lpfc_queue *q)
205{
206 /* Clear the mailbox pointer for completion */
207 q->phba->mbox = NULL;
208 q->hba_index = ((q->hba_index + 1) % q->entry_count);
209 return 1;
210}
211
212/**
213 * lpfc_sli4_eq_get - Gets the next valid EQE from a EQ
214 * @q: The Event Queue to get the first valid EQE from
215 *
216 * This routine will get the first valid Event Queue Entry from @q, update
217 * the queue's internal hba index, and return the EQE. If no valid EQEs are in
218 * the Queue (no more work to do), or the Queue is full of EQEs that have been
219 * processed, but not popped back to the HBA then this routine will return NULL.
220 **/
221static struct lpfc_eqe *
222lpfc_sli4_eq_get(struct lpfc_queue *q)
223{
224 struct lpfc_eqe *eqe = q->qe[q->hba_index].eqe;
225
226 /* If the next EQE is not valid then we are done */
227 if (!bf_get(lpfc_eqe_valid, eqe))
228 return NULL;
229 /* If the host has not yet processed the next entry then we are done */
230 if (((q->hba_index + 1) % q->entry_count) == q->host_index)
231 return NULL;
232
233 q->hba_index = ((q->hba_index + 1) % q->entry_count);
234 return eqe;
235}
236
237/**
238 * lpfc_sli4_eq_release - Indicates the host has finished processing an EQ
239 * @q: The Event Queue that the host has completed processing for.
240 * @arm: Indicates whether the host wants to arms this CQ.
241 *
242 * This routine will mark all Event Queue Entries on @q, from the last
243 * known completed entry to the last entry that was processed, as completed
244 * by clearing the valid bit for each completion queue entry. Then it will
245 * notify the HBA, by ringing the doorbell, that the EQEs have been processed.
246 * The internal host index in the @q will be updated by this routine to indicate
247 * that the host has finished processing the entries. The @arm parameter
248 * indicates that the queue should be rearmed when ringing the doorbell.
249 *
250 * This function will return the number of EQEs that were popped.
251 **/
252uint32_t
253lpfc_sli4_eq_release(struct lpfc_queue *q, bool arm)
254{
255 uint32_t released = 0;
256 struct lpfc_eqe *temp_eqe;
257 struct lpfc_register doorbell;
258
259 /* while there are valid entries */
260 while (q->hba_index != q->host_index) {
261 temp_eqe = q->qe[q->host_index].eqe;
262 bf_set(lpfc_eqe_valid, temp_eqe, 0);
263 released++;
264 q->host_index = ((q->host_index + 1) % q->entry_count);
265 }
266 if (unlikely(released == 0 && !arm))
267 return 0;
268
269 /* ring doorbell for number popped */
270 doorbell.word0 = 0;
271 if (arm) {
272 bf_set(lpfc_eqcq_doorbell_arm, &doorbell, 1);
273 bf_set(lpfc_eqcq_doorbell_eqci, &doorbell, 1);
274 }
275 bf_set(lpfc_eqcq_doorbell_num_released, &doorbell, released);
276 bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_EVENT);
277 bf_set(lpfc_eqcq_doorbell_eqid, &doorbell, q->queue_id);
278 writel(doorbell.word0, q->phba->sli4_hba.EQCQDBregaddr);
279 return released;
280}
281
282/**
283 * lpfc_sli4_cq_get - Gets the next valid CQE from a CQ
284 * @q: The Completion Queue to get the first valid CQE from
285 *
286 * This routine will get the first valid Completion Queue Entry from @q, update
287 * the queue's internal hba index, and return the CQE. If no valid CQEs are in
288 * the Queue (no more work to do), or the Queue is full of CQEs that have been
289 * processed, but not popped back to the HBA then this routine will return NULL.
290 **/
291static struct lpfc_cqe *
292lpfc_sli4_cq_get(struct lpfc_queue *q)
293{
294 struct lpfc_cqe *cqe;
295
296 /* If the next CQE is not valid then we are done */
297 if (!bf_get(lpfc_cqe_valid, q->qe[q->hba_index].cqe))
298 return NULL;
299 /* If the host has not yet processed the next entry then we are done */
300 if (((q->hba_index + 1) % q->entry_count) == q->host_index)
301 return NULL;
302
303 cqe = q->qe[q->hba_index].cqe;
304 q->hba_index = ((q->hba_index + 1) % q->entry_count);
305 return cqe;
306}
307
308/**
309 * lpfc_sli4_cq_release - Indicates the host has finished processing a CQ
310 * @q: The Completion Queue that the host has completed processing for.
311 * @arm: Indicates whether the host wants to arms this CQ.
312 *
313 * This routine will mark all Completion queue entries on @q, from the last
314 * known completed entry to the last entry that was processed, as completed
315 * by clearing the valid bit for each completion queue entry. Then it will
316 * notify the HBA, by ringing the doorbell, that the CQEs have been processed.
317 * The internal host index in the @q will be updated by this routine to indicate
318 * that the host has finished processing the entries. The @arm parameter
319 * indicates that the queue should be rearmed when ringing the doorbell.
320 *
321 * This function will return the number of CQEs that were released.
322 **/
323uint32_t
324lpfc_sli4_cq_release(struct lpfc_queue *q, bool arm)
325{
326 uint32_t released = 0;
327 struct lpfc_cqe *temp_qe;
328 struct lpfc_register doorbell;
329
330 /* while there are valid entries */
331 while (q->hba_index != q->host_index) {
332 temp_qe = q->qe[q->host_index].cqe;
333 bf_set(lpfc_cqe_valid, temp_qe, 0);
334 released++;
335 q->host_index = ((q->host_index + 1) % q->entry_count);
336 }
337 if (unlikely(released == 0 && !arm))
338 return 0;
339
340 /* ring doorbell for number popped */
341 doorbell.word0 = 0;
342 if (arm)
343 bf_set(lpfc_eqcq_doorbell_arm, &doorbell, 1);
344 bf_set(lpfc_eqcq_doorbell_num_released, &doorbell, released);
345 bf_set(lpfc_eqcq_doorbell_qt, &doorbell, LPFC_QUEUE_TYPE_COMPLETION);
346 bf_set(lpfc_eqcq_doorbell_cqid, &doorbell, q->queue_id);
347 writel(doorbell.word0, q->phba->sli4_hba.EQCQDBregaddr);
348 return released;
349}
350
351/**
352 * lpfc_sli4_rq_put - Put a Receive Buffer Queue Entry on a Receive Queue
353 * @q: The Header Receive Queue to operate on.
354 * @wqe: The Receive Queue Entry to put on the Receive queue.
355 *
356 * This routine will copy the contents of @wqe to the next available entry on
357 * the @q. This function will then ring the Receive Queue Doorbell to signal the
358 * HBA to start processing the Receive Queue Entry. This function returns the
359 * index that the rqe was copied to if successful. If no entries are available
360 * on @q then this function will return -ENOMEM.
361 * The caller is expected to hold the hbalock when calling this routine.
362 **/
363static int
364lpfc_sli4_rq_put(struct lpfc_queue *hq, struct lpfc_queue *dq,
365 struct lpfc_rqe *hrqe, struct lpfc_rqe *drqe)
366{
367 struct lpfc_rqe *temp_hrqe = hq->qe[hq->host_index].rqe;
368 struct lpfc_rqe *temp_drqe = dq->qe[dq->host_index].rqe;
369 struct lpfc_register doorbell;
370 int put_index = hq->host_index;
371
372 if (hq->type != LPFC_HRQ || dq->type != LPFC_DRQ)
373 return -EINVAL;
374 if (hq->host_index != dq->host_index)
375 return -EINVAL;
376 /* If the host has not yet processed the next entry then we are done */
377 if (((hq->host_index + 1) % hq->entry_count) == hq->hba_index)
378 return -EBUSY;
379 lpfc_sli_pcimem_bcopy(hrqe, temp_hrqe, hq->entry_size);
380 lpfc_sli_pcimem_bcopy(drqe, temp_drqe, dq->entry_size);
381
382 /* Update the host index to point to the next slot */
383 hq->host_index = ((hq->host_index + 1) % hq->entry_count);
384 dq->host_index = ((dq->host_index + 1) % dq->entry_count);
385
386 /* Ring The Header Receive Queue Doorbell */
387 if (!(hq->host_index % LPFC_RQ_POST_BATCH)) {
388 doorbell.word0 = 0;
389 bf_set(lpfc_rq_doorbell_num_posted, &doorbell,
390 LPFC_RQ_POST_BATCH);
391 bf_set(lpfc_rq_doorbell_id, &doorbell, hq->queue_id);
392 writel(doorbell.word0, hq->phba->sli4_hba.RQDBregaddr);
393 }
394 return put_index;
395}
396
397/**
398 * lpfc_sli4_rq_release - Updates internal hba index for RQ
399 * @q: The Header Receive Queue to operate on.
400 *
401 * This routine will update the HBA index of a queue to reflect consumption of
402 * one Receive Queue Entry by the HBA. When the HBA indicates that it has
403 * consumed an entry the host calls this function to update the queue's
404 * internal pointers. This routine returns the number of entries that were
405 * consumed by the HBA.
406 **/
407static uint32_t
408lpfc_sli4_rq_release(struct lpfc_queue *hq, struct lpfc_queue *dq)
409{
410 if ((hq->type != LPFC_HRQ) || (dq->type != LPFC_DRQ))
411 return 0;
412 hq->hba_index = ((hq->hba_index + 1) % hq->entry_count);
413 dq->hba_index = ((dq->hba_index + 1) % dq->entry_count);
414 return 1;
415}
416
73/** 417/**
74 * lpfc_cmd_iocb - Get next command iocb entry in the ring 418 * lpfc_cmd_iocb - Get next command iocb entry in the ring
75 * @phba: Pointer to HBA context object. 419 * @phba: Pointer to HBA context object.
@@ -215,6 +559,59 @@ lpfc_sli_get_iocbq(struct lpfc_hba *phba)
215} 559}
216 560
217/** 561/**
562 * __lpfc_sli_release_iocbq_s4 - Release iocb to the iocb pool
563 * @phba: Pointer to HBA context object.
564 * @iocbq: Pointer to driver iocb object.
565 *
566 * This function is called with hbalock held to release driver
567 * iocb object to the iocb pool. The iotag in the iocb object
568 * does not change for each use of the iocb object. This function
569 * clears all other fields of the iocb object when it is freed.
570 * The sqlq structure that holds the xritag and phys and virtual
571 * mappings for the scatter gather list is retrieved from the
572 * active array of sglq. The get of the sglq pointer also clears
573 * the entry in the array. If the status of the IO indiactes that
574 * this IO was aborted then the sglq entry it put on the
575 * lpfc_abts_els_sgl_list until the CQ_ABORTED_XRI is received. If the
576 * IO has good status or fails for any other reason then the sglq
577 * entry is added to the free list (lpfc_sgl_list).
578 **/
579static void
580__lpfc_sli_release_iocbq_s4(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq)
581{
582 struct lpfc_sglq *sglq;
583 size_t start_clean = offsetof(struct lpfc_iocbq, iocb);
584 unsigned long iflag;
585
586 if (iocbq->sli4_xritag == NO_XRI)
587 sglq = NULL;
588 else
589 sglq = __lpfc_clear_active_sglq(phba, iocbq->sli4_xritag);
590 if (sglq) {
591 if (iocbq->iocb_flag & LPFC_DRIVER_ABORTED
592 || ((iocbq->iocb.ulpStatus == IOSTAT_LOCAL_REJECT)
593 && (iocbq->iocb.un.ulpWord[4]
594 == IOERR_SLI_ABORTED))) {
595 spin_lock_irqsave(&phba->sli4_hba.abts_sgl_list_lock,
596 iflag);
597 list_add(&sglq->list,
598 &phba->sli4_hba.lpfc_abts_els_sgl_list);
599 spin_unlock_irqrestore(
600 &phba->sli4_hba.abts_sgl_list_lock, iflag);
601 } else
602 list_add(&sglq->list, &phba->sli4_hba.lpfc_sgl_list);
603 }
604
605
606 /*
607 * Clean all volatile data fields, preserve iotag and node struct.
608 */
609 memset((char *)iocbq + start_clean, 0, sizeof(*iocbq) - start_clean);
610 iocbq->sli4_xritag = NO_XRI;
611 list_add_tail(&iocbq->list, &phba->lpfc_iocb_list);
612}
613
614/**
218 * __lpfc_sli_release_iocbq_s3 - Release iocb to the iocb pool 615 * __lpfc_sli_release_iocbq_s3 - Release iocb to the iocb pool
219 * @phba: Pointer to HBA context object. 616 * @phba: Pointer to HBA context object.
220 * @iocbq: Pointer to driver iocb object. 617 * @iocbq: Pointer to driver iocb object.
@@ -959,6 +1356,37 @@ lpfc_sli_hbq_to_firmware_s3(struct lpfc_hba *phba, uint32_t hbqno,
959 return -ENOMEM; 1356 return -ENOMEM;
960} 1357}
961 1358
1359/**
1360 * lpfc_sli_hbq_to_firmware_s4 - Post the hbq buffer to SLI4 firmware
1361 * @phba: Pointer to HBA context object.
1362 * @hbqno: HBQ number.
1363 * @hbq_buf: Pointer to HBQ buffer.
1364 *
1365 * This function is called with the hbalock held to post an RQE to the SLI4
1366 * firmware. If able to post the RQE to the RQ it will queue the hbq entry to
1367 * the hbq_buffer_list and return zero, otherwise it will return an error.
1368 **/
1369static int
1370lpfc_sli_hbq_to_firmware_s4(struct lpfc_hba *phba, uint32_t hbqno,
1371 struct hbq_dmabuf *hbq_buf)
1372{
1373 int rc;
1374 struct lpfc_rqe hrqe;
1375 struct lpfc_rqe drqe;
1376
1377 hrqe.address_lo = putPaddrLow(hbq_buf->hbuf.phys);
1378 hrqe.address_hi = putPaddrHigh(hbq_buf->hbuf.phys);
1379 drqe.address_lo = putPaddrLow(hbq_buf->dbuf.phys);
1380 drqe.address_hi = putPaddrHigh(hbq_buf->dbuf.phys);
1381 rc = lpfc_sli4_rq_put(phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq,
1382 &hrqe, &drqe);
1383 if (rc < 0)
1384 return rc;
1385 hbq_buf->tag = rc;
1386 list_add_tail(&hbq_buf->dbuf.list, &phba->hbqs[hbqno].hbq_buffer_list);
1387 return 0;
1388}
1389
962/* HBQ for ELS and CT traffic. */ 1390/* HBQ for ELS and CT traffic. */
963static struct lpfc_hbq_init lpfc_els_hbq = { 1391static struct lpfc_hbq_init lpfc_els_hbq = {
964 .rn = 1, 1392 .rn = 1,
@@ -2575,6 +3003,36 @@ lpfc_sli_handle_slow_ring_event_s3(struct lpfc_hba *phba,
2575} 3003}
2576 3004
2577/** 3005/**
3006 * lpfc_sli_handle_slow_ring_event_s4 - Handle SLI4 slow-path els events
3007 * @phba: Pointer to HBA context object.
3008 * @pring: Pointer to driver SLI ring object.
3009 * @mask: Host attention register mask for this ring.
3010 *
3011 * This function is called from the worker thread when there is a pending
3012 * ELS response iocb on the driver internal slow-path response iocb worker
3013 * queue. The caller does not hold any lock. The function will remove each
3014 * response iocb from the response worker queue and calls the handle
3015 * response iocb routine (lpfc_sli_sp_handle_rspiocb) to process it.
3016 **/
3017static void
3018lpfc_sli_handle_slow_ring_event_s4(struct lpfc_hba *phba,
3019 struct lpfc_sli_ring *pring, uint32_t mask)
3020{
3021 struct lpfc_iocbq *irspiocbq;
3022 unsigned long iflag;
3023
3024 while (!list_empty(&phba->sli4_hba.sp_rspiocb_work_queue)) {
3025 /* Get the response iocb from the head of work queue */
3026 spin_lock_irqsave(&phba->hbalock, iflag);
3027 list_remove_head(&phba->sli4_hba.sp_rspiocb_work_queue,
3028 irspiocbq, struct lpfc_iocbq, list);
3029 spin_unlock_irqrestore(&phba->hbalock, iflag);
3030 /* Process the response iocb */
3031 lpfc_sli_sp_handle_rspiocb(phba, pring, irspiocbq);
3032 }
3033}
3034
3035/**
2578 * lpfc_sli_abort_iocb_ring - Abort all iocbs in the ring 3036 * lpfc_sli_abort_iocb_ring - Abort all iocbs in the ring
2579 * @phba: Pointer to HBA context object. 3037 * @phba: Pointer to HBA context object.
2580 * @pring: Pointer to driver SLI ring object. 3038 * @pring: Pointer to driver SLI ring object.
@@ -3376,6 +3834,26 @@ lpfc_sli_hbq_setup(struct lpfc_hba *phba)
3376} 3834}
3377 3835
3378/** 3836/**
3837 * lpfc_sli4_rb_setup - Initialize and post RBs to HBA
3838 * @phba: Pointer to HBA context object.
3839 *
3840 * This function is called during the SLI initialization to configure
3841 * all the HBQs and post buffers to the HBQ. The caller is not
3842 * required to hold any locks. This function will return zero if successful
3843 * else it will return negative error code.
3844 **/
3845static int
3846lpfc_sli4_rb_setup(struct lpfc_hba *phba)
3847{
3848 phba->hbq_in_use = 1;
3849 phba->hbqs[0].entry_count = lpfc_hbq_defs[0]->entry_count;
3850 phba->hbq_count = 1;
3851 /* Initially populate or replenish the HBQs */
3852 lpfc_sli_hbqbuf_init_hbqs(phba, 0);
3853 return 0;
3854}
3855
3856/**
3379 * lpfc_sli_config_port - Issue config port mailbox command 3857 * lpfc_sli_config_port - Issue config port mailbox command
3380 * @phba: Pointer to HBA context object. 3858 * @phba: Pointer to HBA context object.
3381 * @sli_mode: sli mode - 2/3 3859 * @sli_mode: sli mode - 2/3
@@ -5130,6 +5608,448 @@ __lpfc_sli_issue_iocb_s3(struct lpfc_hba *phba, uint32_t ring_number,
5130} 5608}
5131 5609
5132/** 5610/**
5611 * lpfc_sli4_bpl2sgl - Convert the bpl/bde to a sgl.
5612 * @phba: Pointer to HBA context object.
5613 * @piocb: Pointer to command iocb.
5614 * @sglq: Pointer to the scatter gather queue object.
5615 *
5616 * This routine converts the bpl or bde that is in the IOCB
5617 * to a sgl list for the sli4 hardware. The physical address
5618 * of the bpl/bde is converted back to a virtual address.
5619 * If the IOCB contains a BPL then the list of BDE's is
5620 * converted to sli4_sge's. If the IOCB contains a single
5621 * BDE then it is converted to a single sli_sge.
5622 * The IOCB is still in cpu endianess so the contents of
5623 * the bpl can be used without byte swapping.
5624 *
5625 * Returns valid XRI = Success, NO_XRI = Failure.
5626**/
5627static uint16_t
5628lpfc_sli4_bpl2sgl(struct lpfc_hba *phba, struct lpfc_iocbq *piocbq,
5629 struct lpfc_sglq *sglq)
5630{
5631 uint16_t xritag = NO_XRI;
5632 struct ulp_bde64 *bpl = NULL;
5633 struct ulp_bde64 bde;
5634 struct sli4_sge *sgl = NULL;
5635 IOCB_t *icmd;
5636 int numBdes = 0;
5637 int i = 0;
5638
5639 if (!piocbq || !sglq)
5640 return xritag;
5641
5642 sgl = (struct sli4_sge *)sglq->sgl;
5643 icmd = &piocbq->iocb;
5644 if (icmd->un.genreq64.bdl.bdeFlags == BUFF_TYPE_BLP_64) {
5645 numBdes = icmd->un.genreq64.bdl.bdeSize /
5646 sizeof(struct ulp_bde64);
5647 /* The addrHigh and addrLow fields within the IOCB
5648 * have not been byteswapped yet so there is no
5649 * need to swap them back.
5650 */
5651 bpl = (struct ulp_bde64 *)
5652 ((struct lpfc_dmabuf *)piocbq->context3)->virt;
5653
5654 if (!bpl)
5655 return xritag;
5656
5657 for (i = 0; i < numBdes; i++) {
5658 /* Should already be byte swapped. */
5659 sgl->addr_hi = bpl->addrHigh;
5660 sgl->addr_lo = bpl->addrLow;
5661 /* swap the size field back to the cpu so we
5662 * can assign it to the sgl.
5663 */
5664 bde.tus.w = le32_to_cpu(bpl->tus.w);
5665 bf_set(lpfc_sli4_sge_len, sgl, bde.tus.f.bdeSize);
5666 if ((i+1) == numBdes)
5667 bf_set(lpfc_sli4_sge_last, sgl, 1);
5668 else
5669 bf_set(lpfc_sli4_sge_last, sgl, 0);
5670 sgl->word2 = cpu_to_le32(sgl->word2);
5671 sgl->word3 = cpu_to_le32(sgl->word3);
5672 bpl++;
5673 sgl++;
5674 }
5675 } else if (icmd->un.genreq64.bdl.bdeFlags == BUFF_TYPE_BDE_64) {
5676 /* The addrHigh and addrLow fields of the BDE have not
5677 * been byteswapped yet so they need to be swapped
5678 * before putting them in the sgl.
5679 */
5680 sgl->addr_hi =
5681 cpu_to_le32(icmd->un.genreq64.bdl.addrHigh);
5682 sgl->addr_lo =
5683 cpu_to_le32(icmd->un.genreq64.bdl.addrLow);
5684 bf_set(lpfc_sli4_sge_len, sgl,
5685 icmd->un.genreq64.bdl.bdeSize);
5686 bf_set(lpfc_sli4_sge_last, sgl, 1);
5687 sgl->word2 = cpu_to_le32(sgl->word2);
5688 sgl->word3 = cpu_to_le32(sgl->word3);
5689 }
5690 return sglq->sli4_xritag;
5691}
5692
5693/**
5694 * lpfc_sli4_scmd_to_wqidx_distr - scsi command to SLI4 WQ index distribution
5695 * @phba: Pointer to HBA context object.
5696 * @piocb: Pointer to command iocb.
5697 *
5698 * This routine performs a round robin SCSI command to SLI4 FCP WQ index
5699 * distribution.
5700 *
5701 * Return: index into SLI4 fast-path FCP queue index.
5702 **/
5703static uint32_t
5704lpfc_sli4_scmd_to_wqidx_distr(struct lpfc_hba *phba, struct lpfc_iocbq *piocb)
5705{
5706 static uint32_t fcp_qidx;
5707
5708 return fcp_qidx++ % phba->cfg_fcp_wq_count;
5709}
5710
5711/**
5712 * lpfc_sli_iocb2wqe - Convert the IOCB to a work queue entry.
5713 * @phba: Pointer to HBA context object.
5714 * @piocb: Pointer to command iocb.
5715 * @wqe: Pointer to the work queue entry.
5716 *
5717 * This routine converts the iocb command to its Work Queue Entry
5718 * equivalent. The wqe pointer should not have any fields set when
5719 * this routine is called because it will memcpy over them.
5720 * This routine does not set the CQ_ID or the WQEC bits in the
5721 * wqe.
5722 *
5723 * Returns: 0 = Success, IOCB_ERROR = Failure.
5724 **/
5725static int
5726lpfc_sli4_iocb2wqe(struct lpfc_hba *phba, struct lpfc_iocbq *iocbq,
5727 union lpfc_wqe *wqe)
5728{
5729 uint32_t payload_len = 0;
5730 uint8_t ct = 0;
5731 uint32_t fip;
5732 uint32_t abort_tag;
5733 uint8_t command_type = ELS_COMMAND_NON_FIP;
5734 uint8_t cmnd;
5735 uint16_t xritag;
5736 struct ulp_bde64 *bpl = NULL;
5737
5738 fip = bf_get(lpfc_fip_flag, &phba->sli4_hba.sli4_flags);
5739 /* The fcp commands will set command type */
5740 if ((!(iocbq->iocb_flag & LPFC_IO_FCP)) && (!fip))
5741 command_type = ELS_COMMAND_NON_FIP;
5742 else if (!(iocbq->iocb_flag & LPFC_IO_FCP))
5743 command_type = ELS_COMMAND_FIP;
5744 else if (iocbq->iocb_flag & LPFC_IO_FCP)
5745 command_type = FCP_COMMAND;
5746 else {
5747 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5748 "2019 Invalid cmd 0x%x\n",
5749 iocbq->iocb.ulpCommand);
5750 return IOCB_ERROR;
5751 }
5752 /* Some of the fields are in the right position already */
5753 memcpy(wqe, &iocbq->iocb, sizeof(union lpfc_wqe));
5754 abort_tag = (uint32_t) iocbq->iotag;
5755 xritag = iocbq->sli4_xritag;
5756 wqe->words[7] = 0; /* The ct field has moved so reset */
5757 /* words0-2 bpl convert bde */
5758 if (iocbq->iocb.un.genreq64.bdl.bdeFlags == BUFF_TYPE_BLP_64) {
5759 bpl = (struct ulp_bde64 *)
5760 ((struct lpfc_dmabuf *)iocbq->context3)->virt;
5761 if (!bpl)
5762 return IOCB_ERROR;
5763
5764 /* Should already be byte swapped. */
5765 wqe->generic.bde.addrHigh = le32_to_cpu(bpl->addrHigh);
5766 wqe->generic.bde.addrLow = le32_to_cpu(bpl->addrLow);
5767 /* swap the size field back to the cpu so we
5768 * can assign it to the sgl.
5769 */
5770 wqe->generic.bde.tus.w = le32_to_cpu(bpl->tus.w);
5771 payload_len = wqe->generic.bde.tus.f.bdeSize;
5772 } else
5773 payload_len = iocbq->iocb.un.fcpi64.bdl.bdeSize;
5774
5775 iocbq->iocb.ulpIoTag = iocbq->iotag;
5776 cmnd = iocbq->iocb.ulpCommand;
5777
5778 switch (iocbq->iocb.ulpCommand) {
5779 case CMD_ELS_REQUEST64_CR:
5780 if (!iocbq->iocb.ulpLe) {
5781 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5782 "2007 Only Limited Edition cmd Format"
5783 " supported 0x%x\n",
5784 iocbq->iocb.ulpCommand);
5785 return IOCB_ERROR;
5786 }
5787 wqe->els_req.payload_len = payload_len;
5788 /* Els_reguest64 has a TMO */
5789 bf_set(wqe_tmo, &wqe->els_req.wqe_com,
5790 iocbq->iocb.ulpTimeout);
5791 /* Need a VF for word 4 set the vf bit*/
5792 bf_set(els_req64_vf, &wqe->els_req, 0);
5793 /* And a VFID for word 12 */
5794 bf_set(els_req64_vfid, &wqe->els_req, 0);
5795 /*
5796 * Set ct field to 3, indicates that the context_tag field
5797 * contains the FCFI and remote N_Port_ID is
5798 * in word 5.
5799 */
5800
5801 ct = ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l);
5802 bf_set(lpfc_wqe_gen_context, &wqe->generic,
5803 iocbq->iocb.ulpContext);
5804
5805 if (iocbq->vport->fc_myDID != 0) {
5806 bf_set(els_req64_sid, &wqe->els_req,
5807 iocbq->vport->fc_myDID);
5808 bf_set(els_req64_sp, &wqe->els_req, 1);
5809 }
5810 bf_set(lpfc_wqe_gen_ct, &wqe->generic, ct);
5811 bf_set(lpfc_wqe_gen_pu, &wqe->generic, 0);
5812 /* CCP CCPE PV PRI in word10 were set in the memcpy */
5813 break;
5814 case CMD_XMIT_SEQUENCE64_CR:
5815 /* word3 iocb=io_tag32 wqe=payload_offset */
5816 /* payload offset used for multilpe outstanding
5817 * sequences on the same exchange
5818 */
5819 wqe->words[3] = 0;
5820 /* word4 relative_offset memcpy */
5821 /* word5 r_ctl/df_ctl memcpy */
5822 bf_set(lpfc_wqe_gen_pu, &wqe->generic, 0);
5823 wqe->xmit_sequence.xmit_len = payload_len;
5824 break;
5825 case CMD_XMIT_BCAST64_CN:
5826 /* word3 iocb=iotag32 wqe=payload_len */
5827 wqe->words[3] = 0; /* no definition for this in wqe */
5828 /* word4 iocb=rsvd wqe=rsvd */
5829 /* word5 iocb=rctl/type/df_ctl wqe=rctl/type/df_ctl memcpy */
5830 /* word6 iocb=ctxt_tag/io_tag wqe=ctxt_tag/xri */
5831 bf_set(lpfc_wqe_gen_ct, &wqe->generic,
5832 ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l));
5833 break;
5834 case CMD_FCP_IWRITE64_CR:
5835 command_type = FCP_COMMAND_DATA_OUT;
5836 /* The struct for wqe fcp_iwrite has 3 fields that are somewhat
5837 * confusing.
5838 * word3 is payload_len: byte offset to the sgl entry for the
5839 * fcp_command.
5840 * word4 is total xfer len, same as the IOCB->ulpParameter.
5841 * word5 is initial xfer len 0 = wait for xfer-ready
5842 */
5843
5844 /* Always wait for xfer-ready before sending data */
5845 wqe->fcp_iwrite.initial_xfer_len = 0;
5846 /* word 4 (xfer length) should have been set on the memcpy */
5847
5848 /* allow write to fall through to read */
5849 case CMD_FCP_IREAD64_CR:
5850 /* FCP_CMD is always the 1st sgl entry */
5851 wqe->fcp_iread.payload_len =
5852 payload_len + sizeof(struct fcp_rsp);
5853
5854 /* word 4 (xfer length) should have been set on the memcpy */
5855
5856 bf_set(lpfc_wqe_gen_erp, &wqe->generic,
5857 iocbq->iocb.ulpFCP2Rcvy);
5858 bf_set(lpfc_wqe_gen_lnk, &wqe->generic, iocbq->iocb.ulpXS);
5859 /* The XC bit and the XS bit are similar. The driver never
5860 * tracked whether or not the exchange was previouslly open.
5861 * XC = Exchange create, 0 is create. 1 is already open.
5862 * XS = link cmd: 1 do not close the exchange after command.
5863 * XS = 0 close exchange when command completes.
5864 * The only time we would not set the XC bit is when the XS bit
5865 * is set and we are sending our 2nd or greater command on
5866 * this exchange.
5867 */
5868
5869 /* ALLOW read & write to fall through to ICMD64 */
5870 case CMD_FCP_ICMND64_CR:
5871 /* Always open the exchange */
5872 bf_set(wqe_xc, &wqe->fcp_iread.wqe_com, 0);
5873
5874 wqe->words[10] &= 0xffff0000; /* zero out ebde count */
5875 bf_set(lpfc_wqe_gen_pu, &wqe->generic, iocbq->iocb.ulpPU);
5876 break;
5877 case CMD_GEN_REQUEST64_CR:
5878 /* word3 command length is described as byte offset to the
5879 * rsp_data. Would always be 16, sizeof(struct sli4_sge)
5880 * sgl[0] = cmnd
5881 * sgl[1] = rsp.
5882 *
5883 */
5884 wqe->gen_req.command_len = payload_len;
5885 /* Word4 parameter copied in the memcpy */
5886 /* Word5 [rctl, type, df_ctl, la] copied in memcpy */
5887 /* word6 context tag copied in memcpy */
5888 if (iocbq->iocb.ulpCt_h || iocbq->iocb.ulpCt_l) {
5889 ct = ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l);
5890 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5891 "2015 Invalid CT %x command 0x%x\n",
5892 ct, iocbq->iocb.ulpCommand);
5893 return IOCB_ERROR;
5894 }
5895 bf_set(lpfc_wqe_gen_ct, &wqe->generic, 0);
5896 bf_set(wqe_tmo, &wqe->gen_req.wqe_com,
5897 iocbq->iocb.ulpTimeout);
5898
5899 bf_set(lpfc_wqe_gen_pu, &wqe->generic, iocbq->iocb.ulpPU);
5900 command_type = OTHER_COMMAND;
5901 break;
5902 case CMD_XMIT_ELS_RSP64_CX:
5903 /* words0-2 BDE memcpy */
5904 /* word3 iocb=iotag32 wqe=rsvd */
5905 wqe->words[3] = 0;
5906 /* word4 iocb=did wge=rsvd. */
5907 wqe->words[4] = 0;
5908 /* word5 iocb=rsvd wge=did */
5909 bf_set(wqe_els_did, &wqe->xmit_els_rsp.wqe_dest,
5910 iocbq->iocb.un.elsreq64.remoteID);
5911
5912 bf_set(lpfc_wqe_gen_ct, &wqe->generic,
5913 ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l));
5914
5915 bf_set(lpfc_wqe_gen_pu, &wqe->generic, iocbq->iocb.ulpPU);
5916 bf_set(wqe_rcvoxid, &wqe->generic, iocbq->iocb.ulpContext);
5917 if (!iocbq->iocb.ulpCt_h && iocbq->iocb.ulpCt_l)
5918 bf_set(lpfc_wqe_gen_context, &wqe->generic,
5919 iocbq->vport->vpi + phba->vpi_base);
5920 command_type = OTHER_COMMAND;
5921 break;
5922 case CMD_CLOSE_XRI_CN:
5923 case CMD_ABORT_XRI_CN:
5924 case CMD_ABORT_XRI_CX:
5925 /* words 0-2 memcpy should be 0 rserved */
5926 /* port will send abts */
5927 if (iocbq->iocb.ulpCommand == CMD_CLOSE_XRI_CN)
5928 /*
5929 * The link is down so the fw does not need to send abts
5930 * on the wire.
5931 */
5932 bf_set(abort_cmd_ia, &wqe->abort_cmd, 1);
5933 else
5934 bf_set(abort_cmd_ia, &wqe->abort_cmd, 0);
5935 bf_set(abort_cmd_criteria, &wqe->abort_cmd, T_XRI_TAG);
5936 abort_tag = iocbq->iocb.un.acxri.abortIoTag;
5937 wqe->words[5] = 0;
5938 bf_set(lpfc_wqe_gen_ct, &wqe->generic,
5939 ((iocbq->iocb.ulpCt_h << 1) | iocbq->iocb.ulpCt_l));
5940 abort_tag = iocbq->iocb.un.acxri.abortIoTag;
5941 wqe->generic.abort_tag = abort_tag;
5942 /*
5943 * The abort handler will send us CMD_ABORT_XRI_CN or
5944 * CMD_CLOSE_XRI_CN and the fw only accepts CMD_ABORT_XRI_CX
5945 */
5946 bf_set(lpfc_wqe_gen_command, &wqe->generic, CMD_ABORT_XRI_CX);
5947 cmnd = CMD_ABORT_XRI_CX;
5948 command_type = OTHER_COMMAND;
5949 xritag = 0;
5950 break;
5951 case CMD_XRI_ABORTED_CX:
5952 case CMD_CREATE_XRI_CR: /* Do we expect to use this? */
5953 /* words0-2 are all 0's no bde */
5954 /* word3 and word4 are rsvrd */
5955 wqe->words[3] = 0;
5956 wqe->words[4] = 0;
5957 /* word5 iocb=rsvd wge=did */
5958 /* There is no remote port id in the IOCB? */
5959 /* Let this fall through and fail */
5960 case CMD_IOCB_FCP_IBIDIR64_CR: /* bidirectional xfer */
5961 case CMD_FCP_TSEND64_CX: /* Target mode send xfer-ready */
5962 case CMD_FCP_TRSP64_CX: /* Target mode rcv */
5963 case CMD_FCP_AUTO_TRSP_CX: /* Auto target rsp */
5964 default:
5965 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5966 "2014 Invalid command 0x%x\n",
5967 iocbq->iocb.ulpCommand);
5968 return IOCB_ERROR;
5969 break;
5970
5971 }
5972 bf_set(lpfc_wqe_gen_xri, &wqe->generic, xritag);
5973 bf_set(lpfc_wqe_gen_request_tag, &wqe->generic, iocbq->iotag);
5974 wqe->generic.abort_tag = abort_tag;
5975 bf_set(lpfc_wqe_gen_cmd_type, &wqe->generic, command_type);
5976 bf_set(lpfc_wqe_gen_command, &wqe->generic, cmnd);
5977 bf_set(lpfc_wqe_gen_class, &wqe->generic, iocbq->iocb.ulpClass);
5978 bf_set(lpfc_wqe_gen_cq_id, &wqe->generic, LPFC_WQE_CQ_ID_DEFAULT);
5979
5980 return 0;
5981}
5982
5983/**
5984 * __lpfc_sli_issue_iocb_s4 - SLI4 device lockless ver of lpfc_sli_issue_iocb
5985 * @phba: Pointer to HBA context object.
5986 * @ring_number: SLI ring number to issue iocb on.
5987 * @piocb: Pointer to command iocb.
5988 * @flag: Flag indicating if this command can be put into txq.
5989 *
5990 * __lpfc_sli_issue_iocb_s4 is used by other functions in the driver to issue
5991 * an iocb command to an HBA with SLI-4 interface spec.
5992 *
5993 * This function is called with hbalock held. The function will return success
5994 * after it successfully submit the iocb to firmware or after adding to the
5995 * txq.
5996 **/
5997static int
5998__lpfc_sli_issue_iocb_s4(struct lpfc_hba *phba, uint32_t ring_number,
5999 struct lpfc_iocbq *piocb, uint32_t flag)
6000{
6001 struct lpfc_sglq *sglq;
6002 uint16_t xritag;
6003 union lpfc_wqe wqe;
6004 struct lpfc_sli_ring *pring = &phba->sli.ring[ring_number];
6005 uint32_t fcp_wqidx;
6006
6007 if (piocb->sli4_xritag == NO_XRI) {
6008 if (piocb->iocb.ulpCommand == CMD_ABORT_XRI_CN ||
6009 piocb->iocb.ulpCommand == CMD_CLOSE_XRI_CN)
6010 sglq = NULL;
6011 else {
6012 sglq = __lpfc_sli_get_sglq(phba);
6013 if (!sglq)
6014 return IOCB_ERROR;
6015 piocb->sli4_xritag = sglq->sli4_xritag;
6016 }
6017 } else if (piocb->iocb_flag & LPFC_IO_FCP) {
6018 sglq = NULL; /* These IO's already have an XRI and
6019 * a mapped sgl.
6020 */
6021 } else {
6022 /* This is a continuation of a commandi,(CX) so this
6023 * sglq is on the active list
6024 */
6025 sglq = __lpfc_get_active_sglq(phba, piocb->sli4_xritag);
6026 if (!sglq)
6027 return IOCB_ERROR;
6028 }
6029
6030 if (sglq) {
6031 xritag = lpfc_sli4_bpl2sgl(phba, piocb, sglq);
6032 if (xritag != sglq->sli4_xritag)
6033 return IOCB_ERROR;
6034 }
6035
6036 if (lpfc_sli4_iocb2wqe(phba, piocb, &wqe))
6037 return IOCB_ERROR;
6038
6039 if (piocb->iocb_flag & LPFC_IO_FCP) {
6040 fcp_wqidx = lpfc_sli4_scmd_to_wqidx_distr(phba, piocb);
6041 if (lpfc_sli4_wq_put(phba->sli4_hba.fcp_wq[fcp_wqidx], &wqe))
6042 return IOCB_ERROR;
6043 } else {
6044 if (lpfc_sli4_wq_put(phba->sli4_hba.els_wq, &wqe))
6045 return IOCB_ERROR;
6046 }
6047 lpfc_sli_ringtxcmpl_put(phba, pring, piocb);
6048
6049 return 0;
6050}
6051
6052/**
5133 * __lpfc_sli_issue_iocb - Wrapper func of lockless version for issuing iocb 6053 * __lpfc_sli_issue_iocb - Wrapper func of lockless version for issuing iocb
5134 * 6054 *
5135 * This routine wraps the actual lockless version for issusing IOCB function 6055 * This routine wraps the actual lockless version for issusing IOCB function
@@ -5165,6 +6085,10 @@ lpfc_sli_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
5165 phba->__lpfc_sli_issue_iocb = __lpfc_sli_issue_iocb_s3; 6085 phba->__lpfc_sli_issue_iocb = __lpfc_sli_issue_iocb_s3;
5166 phba->__lpfc_sli_release_iocbq = __lpfc_sli_release_iocbq_s3; 6086 phba->__lpfc_sli_release_iocbq = __lpfc_sli_release_iocbq_s3;
5167 break; 6087 break;
6088 case LPFC_PCI_DEV_OC:
6089 phba->__lpfc_sli_issue_iocb = __lpfc_sli_issue_iocb_s4;
6090 phba->__lpfc_sli_release_iocbq = __lpfc_sli_release_iocbq_s4;
6091 break;
5168 default: 6092 default:
5169 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, 6093 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5170 "1419 Invalid HBA PCI-device group: 0x%x\n", 6094 "1419 Invalid HBA PCI-device group: 0x%x\n",
@@ -7152,3 +8076,2461 @@ lpfc_sli_intr_handler(int irq, void *dev_id)
7152 /* Return device-level interrupt handling status */ 8076 /* Return device-level interrupt handling status */
7153 return (sp_irq_rc == IRQ_HANDLED) ? sp_irq_rc : fp_irq_rc; 8077 return (sp_irq_rc == IRQ_HANDLED) ? sp_irq_rc : fp_irq_rc;
7154} /* lpfc_sli_intr_handler */ 8078} /* lpfc_sli_intr_handler */
8079
8080/**
8081 * lpfc_sli4_fcp_xri_abort_event_proc - Process fcp xri abort event
8082 * @phba: pointer to lpfc hba data structure.
8083 *
8084 * This routine is invoked by the worker thread to process all the pending
8085 * SLI4 FCP abort XRI events.
8086 **/
8087void lpfc_sli4_fcp_xri_abort_event_proc(struct lpfc_hba *phba)
8088{
8089 struct lpfc_cq_event *cq_event;
8090
8091 /* First, declare the fcp xri abort event has been handled */
8092 spin_lock_irq(&phba->hbalock);
8093 phba->hba_flag &= ~FCP_XRI_ABORT_EVENT;
8094 spin_unlock_irq(&phba->hbalock);
8095 /* Now, handle all the fcp xri abort events */
8096 while (!list_empty(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue)) {
8097 /* Get the first event from the head of the event queue */
8098 spin_lock_irq(&phba->hbalock);
8099 list_remove_head(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue,
8100 cq_event, struct lpfc_cq_event, list);
8101 spin_unlock_irq(&phba->hbalock);
8102 /* Notify aborted XRI for FCP work queue */
8103 lpfc_sli4_fcp_xri_aborted(phba, &cq_event->cqe.wcqe_axri);
8104 /* Free the event processed back to the free pool */
8105 lpfc_sli4_cq_event_release(phba, cq_event);
8106 }
8107}
8108
8109/**
8110 * lpfc_sli4_els_xri_abort_event_proc - Process els xri abort event
8111 * @phba: pointer to lpfc hba data structure.
8112 *
8113 * This routine is invoked by the worker thread to process all the pending
8114 * SLI4 els abort xri events.
8115 **/
8116void lpfc_sli4_els_xri_abort_event_proc(struct lpfc_hba *phba)
8117{
8118 struct lpfc_cq_event *cq_event;
8119
8120 /* First, declare the els xri abort event has been handled */
8121 spin_lock_irq(&phba->hbalock);
8122 phba->hba_flag &= ~ELS_XRI_ABORT_EVENT;
8123 spin_unlock_irq(&phba->hbalock);
8124 /* Now, handle all the els xri abort events */
8125 while (!list_empty(&phba->sli4_hba.sp_els_xri_aborted_work_queue)) {
8126 /* Get the first event from the head of the event queue */
8127 spin_lock_irq(&phba->hbalock);
8128 list_remove_head(&phba->sli4_hba.sp_els_xri_aborted_work_queue,
8129 cq_event, struct lpfc_cq_event, list);
8130 spin_unlock_irq(&phba->hbalock);
8131 /* Notify aborted XRI for ELS work queue */
8132 lpfc_sli4_els_xri_aborted(phba, &cq_event->cqe.wcqe_axri);
8133 /* Free the event processed back to the free pool */
8134 lpfc_sli4_cq_event_release(phba, cq_event);
8135 }
8136}
8137
8138static void
8139lpfc_sli4_iocb_param_transfer(struct lpfc_iocbq *pIocbIn,
8140 struct lpfc_iocbq *pIocbOut,
8141 struct lpfc_wcqe_complete *wcqe)
8142{
8143 size_t offset = offsetof(struct lpfc_iocbq, iocb);
8144
8145 memcpy((char *)pIocbIn + offset, (char *)pIocbOut + offset,
8146 sizeof(struct lpfc_iocbq) - offset);
8147 memset(&pIocbIn->sli4_info, 0,
8148 sizeof(struct lpfc_sli4_rspiocb_info));
8149 /* Map WCQE parameters into irspiocb parameters */
8150 pIocbIn->iocb.ulpStatus = bf_get(lpfc_wcqe_c_status, wcqe);
8151 if (pIocbOut->iocb_flag & LPFC_IO_FCP)
8152 if (pIocbIn->iocb.ulpStatus == IOSTAT_FCP_RSP_ERROR)
8153 pIocbIn->iocb.un.fcpi.fcpi_parm =
8154 pIocbOut->iocb.un.fcpi.fcpi_parm -
8155 wcqe->total_data_placed;
8156 else
8157 pIocbIn->iocb.un.ulpWord[4] = wcqe->parameter;
8158 else
8159 pIocbIn->iocb.un.ulpWord[4] = wcqe->parameter;
8160 /* Load in additional WCQE parameters */
8161 pIocbIn->sli4_info.hw_status = bf_get(lpfc_wcqe_c_hw_status, wcqe);
8162 pIocbIn->sli4_info.bfield = 0;
8163 if (bf_get(lpfc_wcqe_c_xb, wcqe))
8164 pIocbIn->sli4_info.bfield |= LPFC_XB;
8165 if (bf_get(lpfc_wcqe_c_pv, wcqe)) {
8166 pIocbIn->sli4_info.bfield |= LPFC_PV;
8167 pIocbIn->sli4_info.priority =
8168 bf_get(lpfc_wcqe_c_priority, wcqe);
8169 }
8170}
8171
8172/**
8173 * lpfc_sli4_sp_handle_els_wcqe - Handle els work-queue completion event
8174 * @phba: Pointer to HBA context object.
8175 * @wcqe: Pointer to work-queue completion queue entry.
8176 *
8177 * This routine handles an ELS work-queue completion event.
8178 *
8179 * Return: true if work posted to worker thread, otherwise false.
8180 **/
8181static bool
8182lpfc_sli4_sp_handle_els_wcqe(struct lpfc_hba *phba,
8183 struct lpfc_wcqe_complete *wcqe)
8184{
8185 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING];
8186 struct lpfc_iocbq *cmdiocbq;
8187 struct lpfc_iocbq *irspiocbq;
8188 unsigned long iflags;
8189 bool workposted = false;
8190
8191 spin_lock_irqsave(&phba->hbalock, iflags);
8192 pring->stats.iocb_event++;
8193 /* Look up the ELS command IOCB and create pseudo response IOCB */
8194 cmdiocbq = lpfc_sli_iocbq_lookup_by_tag(phba, pring,
8195 bf_get(lpfc_wcqe_c_request_tag, wcqe));
8196 spin_unlock_irqrestore(&phba->hbalock, iflags);
8197
8198 if (unlikely(!cmdiocbq)) {
8199 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8200 "0386 ELS complete with no corresponding "
8201 "cmdiocb: iotag (%d)\n",
8202 bf_get(lpfc_wcqe_c_request_tag, wcqe));
8203 return workposted;
8204 }
8205
8206 /* Fake the irspiocbq and copy necessary response information */
8207 irspiocbq = lpfc_sli_get_iocbq(phba);
8208 if (!irspiocbq) {
8209 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8210 "0387 Failed to allocate an iocbq\n");
8211 return workposted;
8212 }
8213 lpfc_sli4_iocb_param_transfer(irspiocbq, cmdiocbq, wcqe);
8214
8215 /* Add the irspiocb to the response IOCB work list */
8216 spin_lock_irqsave(&phba->hbalock, iflags);
8217 list_add_tail(&irspiocbq->list, &phba->sli4_hba.sp_rspiocb_work_queue);
8218 /* Indicate ELS ring attention */
8219 phba->work_ha |= (HA_R0ATT << (4*LPFC_ELS_RING));
8220 spin_unlock_irqrestore(&phba->hbalock, iflags);
8221 workposted = true;
8222
8223 return workposted;
8224}
8225
8226/**
8227 * lpfc_sli4_sp_handle_rel_wcqe - Handle slow-path WQ entry consumed event
8228 * @phba: Pointer to HBA context object.
8229 * @wcqe: Pointer to work-queue completion queue entry.
8230 *
8231 * This routine handles slow-path WQ entry comsumed event by invoking the
8232 * proper WQ release routine to the slow-path WQ.
8233 **/
8234static void
8235lpfc_sli4_sp_handle_rel_wcqe(struct lpfc_hba *phba,
8236 struct lpfc_wcqe_release *wcqe)
8237{
8238 /* Check for the slow-path ELS work queue */
8239 if (bf_get(lpfc_wcqe_r_wq_id, wcqe) == phba->sli4_hba.els_wq->queue_id)
8240 lpfc_sli4_wq_release(phba->sli4_hba.els_wq,
8241 bf_get(lpfc_wcqe_r_wqe_index, wcqe));
8242 else
8243 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8244 "2579 Slow-path wqe consume event carries "
8245 "miss-matched qid: wcqe-qid=x%x, sp-qid=x%x\n",
8246 bf_get(lpfc_wcqe_r_wqe_index, wcqe),
8247 phba->sli4_hba.els_wq->queue_id);
8248}
8249
8250/**
8251 * lpfc_sli4_sp_handle_abort_xri_wcqe - Handle a xri abort event
8252 * @phba: Pointer to HBA context object.
8253 * @cq: Pointer to a WQ completion queue.
8254 * @wcqe: Pointer to work-queue completion queue entry.
8255 *
8256 * This routine handles an XRI abort event.
8257 *
8258 * Return: true if work posted to worker thread, otherwise false.
8259 **/
8260static bool
8261lpfc_sli4_sp_handle_abort_xri_wcqe(struct lpfc_hba *phba,
8262 struct lpfc_queue *cq,
8263 struct sli4_wcqe_xri_aborted *wcqe)
8264{
8265 bool workposted = false;
8266 struct lpfc_cq_event *cq_event;
8267 unsigned long iflags;
8268
8269 /* Allocate a new internal CQ_EVENT entry */
8270 cq_event = lpfc_sli4_cq_event_alloc(phba);
8271 if (!cq_event) {
8272 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8273 "0602 Failed to allocate CQ_EVENT entry\n");
8274 return false;
8275 }
8276
8277 /* Move the CQE into the proper xri abort event list */
8278 memcpy(&cq_event->cqe, wcqe, sizeof(struct sli4_wcqe_xri_aborted));
8279 switch (cq->subtype) {
8280 case LPFC_FCP:
8281 spin_lock_irqsave(&phba->hbalock, iflags);
8282 list_add_tail(&cq_event->list,
8283 &phba->sli4_hba.sp_fcp_xri_aborted_work_queue);
8284 /* Set the fcp xri abort event flag */
8285 phba->hba_flag |= FCP_XRI_ABORT_EVENT;
8286 spin_unlock_irqrestore(&phba->hbalock, iflags);
8287 workposted = true;
8288 break;
8289 case LPFC_ELS:
8290 spin_lock_irqsave(&phba->hbalock, iflags);
8291 list_add_tail(&cq_event->list,
8292 &phba->sli4_hba.sp_els_xri_aborted_work_queue);
8293 /* Set the els xri abort event flag */
8294 phba->hba_flag |= ELS_XRI_ABORT_EVENT;
8295 spin_unlock_irqrestore(&phba->hbalock, iflags);
8296 workposted = true;
8297 break;
8298 default:
8299 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8300 "0603 Invalid work queue CQE subtype (x%x)\n",
8301 cq->subtype);
8302 workposted = false;
8303 break;
8304 }
8305 return workposted;
8306}
8307
8308/**
8309 * lpfc_sli4_sp_handle_wcqe - Process a work-queue completion queue entry
8310 * @phba: Pointer to HBA context object.
8311 * @cq: Pointer to the completion queue.
8312 * @wcqe: Pointer to a completion queue entry.
8313 *
8314 * This routine process a slow-path work-queue completion queue entry.
8315 *
8316 * Return: true if work posted to worker thread, otherwise false.
8317 **/
8318static bool
8319lpfc_sli4_sp_handle_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
8320 struct lpfc_cqe *cqe)
8321{
8322 struct lpfc_wcqe_complete wcqe;
8323 bool workposted = false;
8324
8325 /* Copy the work queue CQE and convert endian order if needed */
8326 lpfc_sli_pcimem_bcopy(cqe, &wcqe, sizeof(struct lpfc_cqe));
8327
8328 /* Check and process for different type of WCQE and dispatch */
8329 switch (bf_get(lpfc_wcqe_c_code, &wcqe)) {
8330 case CQE_CODE_COMPL_WQE:
8331 /* Process the WQ complete event */
8332 workposted = lpfc_sli4_sp_handle_els_wcqe(phba,
8333 (struct lpfc_wcqe_complete *)&wcqe);
8334 break;
8335 case CQE_CODE_RELEASE_WQE:
8336 /* Process the WQ release event */
8337 lpfc_sli4_sp_handle_rel_wcqe(phba,
8338 (struct lpfc_wcqe_release *)&wcqe);
8339 break;
8340 case CQE_CODE_XRI_ABORTED:
8341 /* Process the WQ XRI abort event */
8342 workposted = lpfc_sli4_sp_handle_abort_xri_wcqe(phba, cq,
8343 (struct sli4_wcqe_xri_aborted *)&wcqe);
8344 break;
8345 default:
8346 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8347 "0388 Not a valid WCQE code: x%x\n",
8348 bf_get(lpfc_wcqe_c_code, &wcqe));
8349 break;
8350 }
8351 return workposted;
8352}
8353
8354/**
8355 * lpfc_sli4_sp_handle_rcqe - Process a receive-queue completion queue entry
8356 * @phba: Pointer to HBA context object.
8357 * @rcqe: Pointer to receive-queue completion queue entry.
8358 *
8359 * This routine process a receive-queue completion queue entry.
8360 *
8361 * Return: true if work posted to worker thread, otherwise false.
8362 **/
8363static bool
8364lpfc_sli4_sp_handle_rcqe(struct lpfc_hba *phba, struct lpfc_cqe *cqe)
8365{
8366 struct lpfc_rcqe rcqe;
8367 bool workposted = false;
8368 struct lpfc_queue *hrq = phba->sli4_hba.hdr_rq;
8369 struct lpfc_queue *drq = phba->sli4_hba.dat_rq;
8370 struct hbq_dmabuf *dma_buf;
8371 uint32_t status;
8372 unsigned long iflags;
8373
8374 /* Copy the receive queue CQE and convert endian order if needed */
8375 lpfc_sli_pcimem_bcopy(cqe, &rcqe, sizeof(struct lpfc_rcqe));
8376 lpfc_sli4_rq_release(hrq, drq);
8377 if (bf_get(lpfc_rcqe_code, &rcqe) != CQE_CODE_RECEIVE)
8378 goto out;
8379 if (bf_get(lpfc_rcqe_rq_id, &rcqe) != hrq->queue_id)
8380 goto out;
8381
8382 status = bf_get(lpfc_rcqe_status, &rcqe);
8383 switch (status) {
8384 case FC_STATUS_RQ_BUF_LEN_EXCEEDED:
8385 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8386 "2537 Receive Frame Truncated!!\n");
8387 case FC_STATUS_RQ_SUCCESS:
8388 spin_lock_irqsave(&phba->hbalock, iflags);
8389 dma_buf = lpfc_sli_hbqbuf_get(&phba->hbqs[0].hbq_buffer_list);
8390 if (!dma_buf) {
8391 spin_unlock_irqrestore(&phba->hbalock, iflags);
8392 goto out;
8393 }
8394 memcpy(&dma_buf->rcqe, &rcqe, sizeof(rcqe));
8395 /* save off the frame for the word thread to process */
8396 list_add_tail(&dma_buf->dbuf.list, &phba->rb_pend_list);
8397 /* Frame received */
8398 phba->hba_flag |= HBA_RECEIVE_BUFFER;
8399 spin_unlock_irqrestore(&phba->hbalock, iflags);
8400 workposted = true;
8401 break;
8402 case FC_STATUS_INSUFF_BUF_NEED_BUF:
8403 case FC_STATUS_INSUFF_BUF_FRM_DISC:
8404 /* Post more buffers if possible */
8405 spin_lock_irqsave(&phba->hbalock, iflags);
8406 phba->hba_flag |= HBA_POST_RECEIVE_BUFFER;
8407 spin_unlock_irqrestore(&phba->hbalock, iflags);
8408 workposted = true;
8409 break;
8410 }
8411out:
8412 return workposted;
8413
8414}
8415
8416/**
8417 * lpfc_sli4_sp_handle_eqe - Process a slow-path event queue entry
8418 * @phba: Pointer to HBA context object.
8419 * @eqe: Pointer to fast-path event queue entry.
8420 *
8421 * This routine process a event queue entry from the slow-path event queue.
8422 * It will check the MajorCode and MinorCode to determine this is for a
8423 * completion event on a completion queue, if not, an error shall be logged
8424 * and just return. Otherwise, it will get to the corresponding completion
8425 * queue and process all the entries on that completion queue, rearm the
8426 * completion queue, and then return.
8427 *
8428 **/
8429static void
8430lpfc_sli4_sp_handle_eqe(struct lpfc_hba *phba, struct lpfc_eqe *eqe)
8431{
8432 struct lpfc_queue *cq = NULL, *childq, *speq;
8433 struct lpfc_cqe *cqe;
8434 bool workposted = false;
8435 int ecount = 0;
8436 uint16_t cqid;
8437
8438 if (bf_get(lpfc_eqe_major_code, eqe) != 0 ||
8439 bf_get(lpfc_eqe_minor_code, eqe) != 0) {
8440 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8441 "0359 Not a valid slow-path completion "
8442 "event: majorcode=x%x, minorcode=x%x\n",
8443 bf_get(lpfc_eqe_major_code, eqe),
8444 bf_get(lpfc_eqe_minor_code, eqe));
8445 return;
8446 }
8447
8448 /* Get the reference to the corresponding CQ */
8449 cqid = bf_get(lpfc_eqe_resource_id, eqe);
8450
8451 /* Search for completion queue pointer matching this cqid */
8452 speq = phba->sli4_hba.sp_eq;
8453 list_for_each_entry(childq, &speq->child_list, list) {
8454 if (childq->queue_id == cqid) {
8455 cq = childq;
8456 break;
8457 }
8458 }
8459 if (unlikely(!cq)) {
8460 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8461 "0365 Slow-path CQ identifier (%d) does "
8462 "not exist\n", cqid);
8463 return;
8464 }
8465
8466 /* Process all the entries to the CQ */
8467 switch (cq->type) {
8468 case LPFC_MCQ:
8469 while ((cqe = lpfc_sli4_cq_get(cq))) {
8470 workposted |= lpfc_sli4_sp_handle_mcqe(phba, cqe);
8471 if (!(++ecount % LPFC_GET_QE_REL_INT))
8472 lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM);
8473 }
8474 break;
8475 case LPFC_WCQ:
8476 while ((cqe = lpfc_sli4_cq_get(cq))) {
8477 workposted |= lpfc_sli4_sp_handle_wcqe(phba, cq, cqe);
8478 if (!(++ecount % LPFC_GET_QE_REL_INT))
8479 lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM);
8480 }
8481 break;
8482 case LPFC_RCQ:
8483 while ((cqe = lpfc_sli4_cq_get(cq))) {
8484 workposted |= lpfc_sli4_sp_handle_rcqe(phba, cqe);
8485 if (!(++ecount % LPFC_GET_QE_REL_INT))
8486 lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM);
8487 }
8488 break;
8489 default:
8490 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8491 "0370 Invalid completion queue type (%d)\n",
8492 cq->type);
8493 return;
8494 }
8495
8496 /* Catch the no cq entry condition, log an error */
8497 if (unlikely(ecount == 0))
8498 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8499 "0371 No entry from the CQ: identifier "
8500 "(x%x), type (%d)\n", cq->queue_id, cq->type);
8501
8502 /* In any case, flash and re-arm the RCQ */
8503 lpfc_sli4_cq_release(cq, LPFC_QUEUE_REARM);
8504
8505 /* wake up worker thread if there are works to be done */
8506 if (workposted)
8507 lpfc_worker_wake_up(phba);
8508}
8509
8510/**
8511 * lpfc_sli4_fp_handle_fcp_wcqe - Process fast-path work queue completion entry
8512 * @eqe: Pointer to fast-path completion queue entry.
8513 *
8514 * This routine process a fast-path work queue completion entry from fast-path
8515 * event queue for FCP command response completion.
8516 **/
8517static void
8518lpfc_sli4_fp_handle_fcp_wcqe(struct lpfc_hba *phba,
8519 struct lpfc_wcqe_complete *wcqe)
8520{
8521 struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_FCP_RING];
8522 struct lpfc_iocbq *cmdiocbq;
8523 struct lpfc_iocbq irspiocbq;
8524 unsigned long iflags;
8525
8526 spin_lock_irqsave(&phba->hbalock, iflags);
8527 pring->stats.iocb_event++;
8528 spin_unlock_irqrestore(&phba->hbalock, iflags);
8529
8530 /* Check for response status */
8531 if (unlikely(bf_get(lpfc_wcqe_c_status, wcqe))) {
8532 /* If resource errors reported from HBA, reduce queue
8533 * depth of the SCSI device.
8534 */
8535 if ((bf_get(lpfc_wcqe_c_status, wcqe) ==
8536 IOSTAT_LOCAL_REJECT) &&
8537 (wcqe->parameter == IOERR_NO_RESOURCES)) {
8538 phba->lpfc_rampdown_queue_depth(phba);
8539 }
8540 /* Log the error status */
8541 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8542 "0373 FCP complete error: status=x%x, "
8543 "hw_status=x%x, total_data_specified=%d, "
8544 "parameter=x%x, word3=x%x\n",
8545 bf_get(lpfc_wcqe_c_status, wcqe),
8546 bf_get(lpfc_wcqe_c_hw_status, wcqe),
8547 wcqe->total_data_placed, wcqe->parameter,
8548 wcqe->word3);
8549 }
8550
8551 /* Look up the FCP command IOCB and create pseudo response IOCB */
8552 spin_lock_irqsave(&phba->hbalock, iflags);
8553 cmdiocbq = lpfc_sli_iocbq_lookup_by_tag(phba, pring,
8554 bf_get(lpfc_wcqe_c_request_tag, wcqe));
8555 spin_unlock_irqrestore(&phba->hbalock, iflags);
8556 if (unlikely(!cmdiocbq)) {
8557 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8558 "0374 FCP complete with no corresponding "
8559 "cmdiocb: iotag (%d)\n",
8560 bf_get(lpfc_wcqe_c_request_tag, wcqe));
8561 return;
8562 }
8563 if (unlikely(!cmdiocbq->iocb_cmpl)) {
8564 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8565 "0375 FCP cmdiocb not callback function "
8566 "iotag: (%d)\n",
8567 bf_get(lpfc_wcqe_c_request_tag, wcqe));
8568 return;
8569 }
8570
8571 /* Fake the irspiocb and copy necessary response information */
8572 lpfc_sli4_iocb_param_transfer(&irspiocbq, cmdiocbq, wcqe);
8573
8574 /* Pass the cmd_iocb and the rsp state to the upper layer */
8575 (cmdiocbq->iocb_cmpl)(phba, cmdiocbq, &irspiocbq);
8576}
8577
8578/**
8579 * lpfc_sli4_fp_handle_rel_wcqe - Handle fast-path WQ entry consumed event
8580 * @phba: Pointer to HBA context object.
8581 * @cq: Pointer to completion queue.
8582 * @wcqe: Pointer to work-queue completion queue entry.
8583 *
8584 * This routine handles an fast-path WQ entry comsumed event by invoking the
8585 * proper WQ release routine to the slow-path WQ.
8586 **/
8587static void
8588lpfc_sli4_fp_handle_rel_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
8589 struct lpfc_wcqe_release *wcqe)
8590{
8591 struct lpfc_queue *childwq;
8592 bool wqid_matched = false;
8593 uint16_t fcp_wqid;
8594
8595 /* Check for fast-path FCP work queue release */
8596 fcp_wqid = bf_get(lpfc_wcqe_r_wq_id, wcqe);
8597 list_for_each_entry(childwq, &cq->child_list, list) {
8598 if (childwq->queue_id == fcp_wqid) {
8599 lpfc_sli4_wq_release(childwq,
8600 bf_get(lpfc_wcqe_r_wqe_index, wcqe));
8601 wqid_matched = true;
8602 break;
8603 }
8604 }
8605 /* Report warning log message if no match found */
8606 if (wqid_matched != true)
8607 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8608 "2580 Fast-path wqe consume event carries "
8609 "miss-matched qid: wcqe-qid=x%x\n", fcp_wqid);
8610}
8611
8612/**
8613 * lpfc_sli4_fp_handle_wcqe - Process fast-path work queue completion entry
8614 * @cq: Pointer to the completion queue.
8615 * @eqe: Pointer to fast-path completion queue entry.
8616 *
8617 * This routine process a fast-path work queue completion entry from fast-path
8618 * event queue for FCP command response completion.
8619 **/
8620static int
8621lpfc_sli4_fp_handle_wcqe(struct lpfc_hba *phba, struct lpfc_queue *cq,
8622 struct lpfc_cqe *cqe)
8623{
8624 struct lpfc_wcqe_release wcqe;
8625 bool workposted = false;
8626
8627 /* Copy the work queue CQE and convert endian order if needed */
8628 lpfc_sli_pcimem_bcopy(cqe, &wcqe, sizeof(struct lpfc_cqe));
8629
8630 /* Check and process for different type of WCQE and dispatch */
8631 switch (bf_get(lpfc_wcqe_c_code, &wcqe)) {
8632 case CQE_CODE_COMPL_WQE:
8633 /* Process the WQ complete event */
8634 lpfc_sli4_fp_handle_fcp_wcqe(phba,
8635 (struct lpfc_wcqe_complete *)&wcqe);
8636 break;
8637 case CQE_CODE_RELEASE_WQE:
8638 /* Process the WQ release event */
8639 lpfc_sli4_fp_handle_rel_wcqe(phba, cq,
8640 (struct lpfc_wcqe_release *)&wcqe);
8641 break;
8642 case CQE_CODE_XRI_ABORTED:
8643 /* Process the WQ XRI abort event */
8644 workposted = lpfc_sli4_sp_handle_abort_xri_wcqe(phba, cq,
8645 (struct sli4_wcqe_xri_aborted *)&wcqe);
8646 break;
8647 default:
8648 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8649 "0144 Not a valid WCQE code: x%x\n",
8650 bf_get(lpfc_wcqe_c_code, &wcqe));
8651 break;
8652 }
8653 return workposted;
8654}
8655
8656/**
8657 * lpfc_sli4_fp_handle_eqe - Process a fast-path event queue entry
8658 * @phba: Pointer to HBA context object.
8659 * @eqe: Pointer to fast-path event queue entry.
8660 *
8661 * This routine process a event queue entry from the fast-path event queue.
8662 * It will check the MajorCode and MinorCode to determine this is for a
8663 * completion event on a completion queue, if not, an error shall be logged
8664 * and just return. Otherwise, it will get to the corresponding completion
8665 * queue and process all the entries on the completion queue, rearm the
8666 * completion queue, and then return.
8667 **/
8668static void
8669lpfc_sli4_fp_handle_eqe(struct lpfc_hba *phba, struct lpfc_eqe *eqe,
8670 uint32_t fcp_cqidx)
8671{
8672 struct lpfc_queue *cq;
8673 struct lpfc_cqe *cqe;
8674 bool workposted = false;
8675 uint16_t cqid;
8676 int ecount = 0;
8677
8678 if (unlikely(bf_get(lpfc_eqe_major_code, eqe) != 0) ||
8679 unlikely(bf_get(lpfc_eqe_minor_code, eqe) != 0)) {
8680 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8681 "0366 Not a valid fast-path completion "
8682 "event: majorcode=x%x, minorcode=x%x\n",
8683 bf_get(lpfc_eqe_major_code, eqe),
8684 bf_get(lpfc_eqe_minor_code, eqe));
8685 return;
8686 }
8687
8688 cq = phba->sli4_hba.fcp_cq[fcp_cqidx];
8689 if (unlikely(!cq)) {
8690 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8691 "0367 Fast-path completion queue does not "
8692 "exist\n");
8693 return;
8694 }
8695
8696 /* Get the reference to the corresponding CQ */
8697 cqid = bf_get(lpfc_eqe_resource_id, eqe);
8698 if (unlikely(cqid != cq->queue_id)) {
8699 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8700 "0368 Miss-matched fast-path completion "
8701 "queue identifier: eqcqid=%d, fcpcqid=%d\n",
8702 cqid, cq->queue_id);
8703 return;
8704 }
8705
8706 /* Process all the entries to the CQ */
8707 while ((cqe = lpfc_sli4_cq_get(cq))) {
8708 workposted |= lpfc_sli4_fp_handle_wcqe(phba, cq, cqe);
8709 if (!(++ecount % LPFC_GET_QE_REL_INT))
8710 lpfc_sli4_cq_release(cq, LPFC_QUEUE_NOARM);
8711 }
8712
8713 /* Catch the no cq entry condition */
8714 if (unlikely(ecount == 0))
8715 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
8716 "0369 No entry from fast-path completion "
8717 "queue fcpcqid=%d\n", cq->queue_id);
8718
8719 /* In any case, flash and re-arm the CQ */
8720 lpfc_sli4_cq_release(cq, LPFC_QUEUE_REARM);
8721
8722 /* wake up worker thread if there are works to be done */
8723 if (workposted)
8724 lpfc_worker_wake_up(phba);
8725}
8726
8727static void
8728lpfc_sli4_eq_flush(struct lpfc_hba *phba, struct lpfc_queue *eq)
8729{
8730 struct lpfc_eqe *eqe;
8731
8732 /* walk all the EQ entries and drop on the floor */
8733 while ((eqe = lpfc_sli4_eq_get(eq)))
8734 ;
8735
8736 /* Clear and re-arm the EQ */
8737 lpfc_sli4_eq_release(eq, LPFC_QUEUE_REARM);
8738}
8739
8740/**
8741 * lpfc_sli4_sp_intr_handler - Slow-path interrupt handler to SLI-4 device
8742 * @irq: Interrupt number.
8743 * @dev_id: The device context pointer.
8744 *
8745 * This function is directly called from the PCI layer as an interrupt
8746 * service routine when device with SLI-4 interface spec is enabled with
8747 * MSI-X multi-message interrupt mode and there are slow-path events in
8748 * the HBA. However, when the device is enabled with either MSI or Pin-IRQ
8749 * interrupt mode, this function is called as part of the device-level
8750 * interrupt handler. When the PCI slot is in error recovery or the HBA is
8751 * undergoing initialization, the interrupt handler will not process the
8752 * interrupt. The link attention and ELS ring attention events are handled
8753 * by the worker thread. The interrupt handler signals the worker thread
8754 * and returns for these events. This function is called without any lock
8755 * held. It gets the hbalock to access and update SLI data structures.
8756 *
8757 * This function returns IRQ_HANDLED when interrupt is handled else it
8758 * returns IRQ_NONE.
8759 **/
8760irqreturn_t
8761lpfc_sli4_sp_intr_handler(int irq, void *dev_id)
8762{
8763 struct lpfc_hba *phba;
8764 struct lpfc_queue *speq;
8765 struct lpfc_eqe *eqe;
8766 unsigned long iflag;
8767 int ecount = 0;
8768
8769 /*
8770 * Get the driver's phba structure from the dev_id
8771 */
8772 phba = (struct lpfc_hba *)dev_id;
8773
8774 if (unlikely(!phba))
8775 return IRQ_NONE;
8776
8777 /* Get to the EQ struct associated with this vector */
8778 speq = phba->sli4_hba.sp_eq;
8779
8780 /* Check device state for handling interrupt */
8781 if (unlikely(lpfc_intr_state_check(phba))) {
8782 /* Check again for link_state with lock held */
8783 spin_lock_irqsave(&phba->hbalock, iflag);
8784 if (phba->link_state < LPFC_LINK_DOWN)
8785 /* Flush, clear interrupt, and rearm the EQ */
8786 lpfc_sli4_eq_flush(phba, speq);
8787 spin_unlock_irqrestore(&phba->hbalock, iflag);
8788 return IRQ_NONE;
8789 }
8790
8791 /*
8792 * Process all the event on FCP slow-path EQ
8793 */
8794 while ((eqe = lpfc_sli4_eq_get(speq))) {
8795 lpfc_sli4_sp_handle_eqe(phba, eqe);
8796 if (!(++ecount % LPFC_GET_QE_REL_INT))
8797 lpfc_sli4_eq_release(speq, LPFC_QUEUE_NOARM);
8798 }
8799
8800 /* Always clear and re-arm the slow-path EQ */
8801 lpfc_sli4_eq_release(speq, LPFC_QUEUE_REARM);
8802
8803 /* Catch the no cq entry condition */
8804 if (unlikely(ecount == 0)) {
8805 if (phba->intr_type == MSIX)
8806 /* MSI-X treated interrupt served as no EQ share INT */
8807 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8808 "0357 MSI-X interrupt with no EQE\n");
8809 else
8810 /* Non MSI-X treated on interrupt as EQ share INT */
8811 return IRQ_NONE;
8812 }
8813
8814 return IRQ_HANDLED;
8815} /* lpfc_sli4_sp_intr_handler */
8816
8817/**
8818 * lpfc_sli4_fp_intr_handler - Fast-path interrupt handler to SLI-4 device
8819 * @irq: Interrupt number.
8820 * @dev_id: The device context pointer.
8821 *
8822 * This function is directly called from the PCI layer as an interrupt
8823 * service routine when device with SLI-4 interface spec is enabled with
8824 * MSI-X multi-message interrupt mode and there is a fast-path FCP IOCB
8825 * ring event in the HBA. However, when the device is enabled with either
8826 * MSI or Pin-IRQ interrupt mode, this function is called as part of the
8827 * device-level interrupt handler. When the PCI slot is in error recovery
8828 * or the HBA is undergoing initialization, the interrupt handler will not
8829 * process the interrupt. The SCSI FCP fast-path ring event are handled in
8830 * the intrrupt context. This function is called without any lock held.
8831 * It gets the hbalock to access and update SLI data structures. Note that,
8832 * the FCP EQ to FCP CQ are one-to-one map such that the FCP EQ index is
8833 * equal to that of FCP CQ index.
8834 *
8835 * This function returns IRQ_HANDLED when interrupt is handled else it
8836 * returns IRQ_NONE.
8837 **/
8838irqreturn_t
8839lpfc_sli4_fp_intr_handler(int irq, void *dev_id)
8840{
8841 struct lpfc_hba *phba;
8842 struct lpfc_fcp_eq_hdl *fcp_eq_hdl;
8843 struct lpfc_queue *fpeq;
8844 struct lpfc_eqe *eqe;
8845 unsigned long iflag;
8846 int ecount = 0;
8847 uint32_t fcp_eqidx;
8848
8849 /* Get the driver's phba structure from the dev_id */
8850 fcp_eq_hdl = (struct lpfc_fcp_eq_hdl *)dev_id;
8851 phba = fcp_eq_hdl->phba;
8852 fcp_eqidx = fcp_eq_hdl->idx;
8853
8854 if (unlikely(!phba))
8855 return IRQ_NONE;
8856
8857 /* Get to the EQ struct associated with this vector */
8858 fpeq = phba->sli4_hba.fp_eq[fcp_eqidx];
8859
8860 /* Check device state for handling interrupt */
8861 if (unlikely(lpfc_intr_state_check(phba))) {
8862 /* Check again for link_state with lock held */
8863 spin_lock_irqsave(&phba->hbalock, iflag);
8864 if (phba->link_state < LPFC_LINK_DOWN)
8865 /* Flush, clear interrupt, and rearm the EQ */
8866 lpfc_sli4_eq_flush(phba, fpeq);
8867 spin_unlock_irqrestore(&phba->hbalock, iflag);
8868 return IRQ_NONE;
8869 }
8870
8871 /*
8872 * Process all the event on FCP fast-path EQ
8873 */
8874 while ((eqe = lpfc_sli4_eq_get(fpeq))) {
8875 lpfc_sli4_fp_handle_eqe(phba, eqe, fcp_eqidx);
8876 if (!(++ecount % LPFC_GET_QE_REL_INT))
8877 lpfc_sli4_eq_release(fpeq, LPFC_QUEUE_NOARM);
8878 }
8879
8880 /* Always clear and re-arm the fast-path EQ */
8881 lpfc_sli4_eq_release(fpeq, LPFC_QUEUE_REARM);
8882
8883 if (unlikely(ecount == 0)) {
8884 if (phba->intr_type == MSIX)
8885 /* MSI-X treated interrupt served as no EQ share INT */
8886 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
8887 "0358 MSI-X interrupt with no EQE\n");
8888 else
8889 /* Non MSI-X treated on interrupt as EQ share INT */
8890 return IRQ_NONE;
8891 }
8892
8893 return IRQ_HANDLED;
8894} /* lpfc_sli4_fp_intr_handler */
8895
8896/**
8897 * lpfc_sli4_intr_handler - Device-level interrupt handler for SLI-4 device
8898 * @irq: Interrupt number.
8899 * @dev_id: The device context pointer.
8900 *
8901 * This function is the device-level interrupt handler to device with SLI-4
8902 * interface spec, called from the PCI layer when either MSI or Pin-IRQ
8903 * interrupt mode is enabled and there is an event in the HBA which requires
8904 * driver attention. This function invokes the slow-path interrupt attention
8905 * handling function and fast-path interrupt attention handling function in
8906 * turn to process the relevant HBA attention events. This function is called
8907 * without any lock held. It gets the hbalock to access and update SLI data
8908 * structures.
8909 *
8910 * This function returns IRQ_HANDLED when interrupt is handled, else it
8911 * returns IRQ_NONE.
8912 **/
8913irqreturn_t
8914lpfc_sli4_intr_handler(int irq, void *dev_id)
8915{
8916 struct lpfc_hba *phba;
8917 irqreturn_t sp_irq_rc, fp_irq_rc;
8918 bool fp_handled = false;
8919 uint32_t fcp_eqidx;
8920
8921 /* Get the driver's phba structure from the dev_id */
8922 phba = (struct lpfc_hba *)dev_id;
8923
8924 if (unlikely(!phba))
8925 return IRQ_NONE;
8926
8927 /*
8928 * Invokes slow-path host attention interrupt handling as appropriate.
8929 */
8930 sp_irq_rc = lpfc_sli4_sp_intr_handler(irq, dev_id);
8931
8932 /*
8933 * Invoke fast-path host attention interrupt handling as appropriate.
8934 */
8935 for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++) {
8936 fp_irq_rc = lpfc_sli4_fp_intr_handler(irq,
8937 &phba->sli4_hba.fcp_eq_hdl[fcp_eqidx]);
8938 if (fp_irq_rc == IRQ_HANDLED)
8939 fp_handled |= true;
8940 }
8941
8942 return (fp_handled == true) ? IRQ_HANDLED : sp_irq_rc;
8943} /* lpfc_sli4_intr_handler */
8944
8945/**
8946 * lpfc_sli4_queue_free - free a queue structure and associated memory
8947 * @queue: The queue structure to free.
8948 *
8949 * This function frees a queue structure and the DMAable memeory used for
8950 * the host resident queue. This function must be called after destroying the
8951 * queue on the HBA.
8952 **/
8953void
8954lpfc_sli4_queue_free(struct lpfc_queue *queue)
8955{
8956 struct lpfc_dmabuf *dmabuf;
8957
8958 if (!queue)
8959 return;
8960
8961 while (!list_empty(&queue->page_list)) {
8962 list_remove_head(&queue->page_list, dmabuf, struct lpfc_dmabuf,
8963 list);
8964 dma_free_coherent(&queue->phba->pcidev->dev, PAGE_SIZE,
8965 dmabuf->virt, dmabuf->phys);
8966 kfree(dmabuf);
8967 }
8968 kfree(queue);
8969 return;
8970}
8971
8972/**
8973 * lpfc_sli4_queue_alloc - Allocate and initialize a queue structure
8974 * @phba: The HBA that this queue is being created on.
8975 * @entry_size: The size of each queue entry for this queue.
8976 * @entry count: The number of entries that this queue will handle.
8977 *
8978 * This function allocates a queue structure and the DMAable memory used for
8979 * the host resident queue. This function must be called before creating the
8980 * queue on the HBA.
8981 **/
8982struct lpfc_queue *
8983lpfc_sli4_queue_alloc(struct lpfc_hba *phba, uint32_t entry_size,
8984 uint32_t entry_count)
8985{
8986 struct lpfc_queue *queue;
8987 struct lpfc_dmabuf *dmabuf;
8988 int x, total_qe_count;
8989 void *dma_pointer;
8990
8991
8992 queue = kzalloc(sizeof(struct lpfc_queue) +
8993 (sizeof(union sli4_qe) * entry_count), GFP_KERNEL);
8994 if (!queue)
8995 return NULL;
8996 queue->page_count = (PAGE_ALIGN(entry_size * entry_count))/PAGE_SIZE;
8997 INIT_LIST_HEAD(&queue->list);
8998 INIT_LIST_HEAD(&queue->page_list);
8999 INIT_LIST_HEAD(&queue->child_list);
9000 for (x = 0, total_qe_count = 0; x < queue->page_count; x++) {
9001 dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
9002 if (!dmabuf)
9003 goto out_fail;
9004 dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
9005 PAGE_SIZE, &dmabuf->phys,
9006 GFP_KERNEL);
9007 if (!dmabuf->virt) {
9008 kfree(dmabuf);
9009 goto out_fail;
9010 }
9011 dmabuf->buffer_tag = x;
9012 list_add_tail(&dmabuf->list, &queue->page_list);
9013 /* initialize queue's entry array */
9014 dma_pointer = dmabuf->virt;
9015 for (; total_qe_count < entry_count &&
9016 dma_pointer < (PAGE_SIZE + dmabuf->virt);
9017 total_qe_count++, dma_pointer += entry_size) {
9018 queue->qe[total_qe_count].address = dma_pointer;
9019 }
9020 }
9021 queue->entry_size = entry_size;
9022 queue->entry_count = entry_count;
9023 queue->phba = phba;
9024
9025 return queue;
9026out_fail:
9027 lpfc_sli4_queue_free(queue);
9028 return NULL;
9029}
9030
9031/**
9032 * lpfc_eq_create - Create an Event Queue on the HBA
9033 * @phba: HBA structure that indicates port to create a queue on.
9034 * @eq: The queue structure to use to create the event queue.
9035 * @imax: The maximum interrupt per second limit.
9036 *
9037 * This function creates an event queue, as detailed in @eq, on a port,
9038 * described by @phba by sending an EQ_CREATE mailbox command to the HBA.
9039 *
9040 * The @phba struct is used to send mailbox command to HBA. The @eq struct
9041 * is used to get the entry count and entry size that are necessary to
9042 * determine the number of pages to allocate and use for this queue. This
9043 * function will send the EQ_CREATE mailbox command to the HBA to setup the
9044 * event queue. This function is asynchronous and will wait for the mailbox
9045 * command to finish before continuing.
9046 *
9047 * On success this function will return a zero. If unable to allocate enough
9048 * memory this function will return ENOMEM. If the queue create mailbox command
9049 * fails this function will return ENXIO.
9050 **/
9051uint32_t
9052lpfc_eq_create(struct lpfc_hba *phba, struct lpfc_queue *eq, uint16_t imax)
9053{
9054 struct lpfc_mbx_eq_create *eq_create;
9055 LPFC_MBOXQ_t *mbox;
9056 int rc, length, status = 0;
9057 struct lpfc_dmabuf *dmabuf;
9058 uint32_t shdr_status, shdr_add_status;
9059 union lpfc_sli4_cfg_shdr *shdr;
9060 uint16_t dmult;
9061
9062 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
9063 if (!mbox)
9064 return -ENOMEM;
9065 length = (sizeof(struct lpfc_mbx_eq_create) -
9066 sizeof(struct lpfc_sli4_cfg_mhdr));
9067 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
9068 LPFC_MBOX_OPCODE_EQ_CREATE,
9069 length, LPFC_SLI4_MBX_EMBED);
9070 eq_create = &mbox->u.mqe.un.eq_create;
9071 bf_set(lpfc_mbx_eq_create_num_pages, &eq_create->u.request,
9072 eq->page_count);
9073 bf_set(lpfc_eq_context_size, &eq_create->u.request.context,
9074 LPFC_EQE_SIZE);
9075 bf_set(lpfc_eq_context_valid, &eq_create->u.request.context, 1);
9076 /* Calculate delay multiper from maximum interrupt per second */
9077 dmult = LPFC_DMULT_CONST/imax - 1;
9078 bf_set(lpfc_eq_context_delay_multi, &eq_create->u.request.context,
9079 dmult);
9080 switch (eq->entry_count) {
9081 default:
9082 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
9083 "0360 Unsupported EQ count. (%d)\n",
9084 eq->entry_count);
9085 if (eq->entry_count < 256)
9086 return -EINVAL;
9087 /* otherwise default to smallest count (drop through) */
9088 case 256:
9089 bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
9090 LPFC_EQ_CNT_256);
9091 break;
9092 case 512:
9093 bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
9094 LPFC_EQ_CNT_512);
9095 break;
9096 case 1024:
9097 bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
9098 LPFC_EQ_CNT_1024);
9099 break;
9100 case 2048:
9101 bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
9102 LPFC_EQ_CNT_2048);
9103 break;
9104 case 4096:
9105 bf_set(lpfc_eq_context_count, &eq_create->u.request.context,
9106 LPFC_EQ_CNT_4096);
9107 break;
9108 }
9109 list_for_each_entry(dmabuf, &eq->page_list, list) {
9110 eq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
9111 putPaddrLow(dmabuf->phys);
9112 eq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
9113 putPaddrHigh(dmabuf->phys);
9114 }
9115 mbox->vport = phba->pport;
9116 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
9117 mbox->context1 = NULL;
9118 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
9119 shdr = (union lpfc_sli4_cfg_shdr *) &eq_create->header.cfg_shdr;
9120 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9121 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9122 if (shdr_status || shdr_add_status || rc) {
9123 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9124 "2500 EQ_CREATE mailbox failed with "
9125 "status x%x add_status x%x, mbx status x%x\n",
9126 shdr_status, shdr_add_status, rc);
9127 status = -ENXIO;
9128 }
9129 eq->type = LPFC_EQ;
9130 eq->subtype = LPFC_NONE;
9131 eq->queue_id = bf_get(lpfc_mbx_eq_create_q_id, &eq_create->u.response);
9132 if (eq->queue_id == 0xFFFF)
9133 status = -ENXIO;
9134 eq->host_index = 0;
9135 eq->hba_index = 0;
9136
9137 if (rc != MBX_TIMEOUT)
9138 mempool_free(mbox, phba->mbox_mem_pool);
9139 return status;
9140}
9141
9142/**
9143 * lpfc_cq_create - Create a Completion Queue on the HBA
9144 * @phba: HBA structure that indicates port to create a queue on.
9145 * @cq: The queue structure to use to create the completion queue.
9146 * @eq: The event queue to bind this completion queue to.
9147 *
9148 * This function creates a completion queue, as detailed in @wq, on a port,
9149 * described by @phba by sending a CQ_CREATE mailbox command to the HBA.
9150 *
9151 * The @phba struct is used to send mailbox command to HBA. The @cq struct
9152 * is used to get the entry count and entry size that are necessary to
9153 * determine the number of pages to allocate and use for this queue. The @eq
9154 * is used to indicate which event queue to bind this completion queue to. This
9155 * function will send the CQ_CREATE mailbox command to the HBA to setup the
9156 * completion queue. This function is asynchronous and will wait for the mailbox
9157 * command to finish before continuing.
9158 *
9159 * On success this function will return a zero. If unable to allocate enough
9160 * memory this function will return ENOMEM. If the queue create mailbox command
9161 * fails this function will return ENXIO.
9162 **/
9163uint32_t
9164lpfc_cq_create(struct lpfc_hba *phba, struct lpfc_queue *cq,
9165 struct lpfc_queue *eq, uint32_t type, uint32_t subtype)
9166{
9167 struct lpfc_mbx_cq_create *cq_create;
9168 struct lpfc_dmabuf *dmabuf;
9169 LPFC_MBOXQ_t *mbox;
9170 int rc, length, status = 0;
9171 uint32_t shdr_status, shdr_add_status;
9172 union lpfc_sli4_cfg_shdr *shdr;
9173
9174 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
9175 if (!mbox)
9176 return -ENOMEM;
9177 length = (sizeof(struct lpfc_mbx_cq_create) -
9178 sizeof(struct lpfc_sli4_cfg_mhdr));
9179 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
9180 LPFC_MBOX_OPCODE_CQ_CREATE,
9181 length, LPFC_SLI4_MBX_EMBED);
9182 cq_create = &mbox->u.mqe.un.cq_create;
9183 bf_set(lpfc_mbx_cq_create_num_pages, &cq_create->u.request,
9184 cq->page_count);
9185 bf_set(lpfc_cq_context_event, &cq_create->u.request.context, 1);
9186 bf_set(lpfc_cq_context_valid, &cq_create->u.request.context, 1);
9187 bf_set(lpfc_cq_eq_id, &cq_create->u.request.context, eq->queue_id);
9188 switch (cq->entry_count) {
9189 default:
9190 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
9191 "0361 Unsupported CQ count. (%d)\n",
9192 cq->entry_count);
9193 if (cq->entry_count < 256)
9194 return -EINVAL;
9195 /* otherwise default to smallest count (drop through) */
9196 case 256:
9197 bf_set(lpfc_cq_context_count, &cq_create->u.request.context,
9198 LPFC_CQ_CNT_256);
9199 break;
9200 case 512:
9201 bf_set(lpfc_cq_context_count, &cq_create->u.request.context,
9202 LPFC_CQ_CNT_512);
9203 break;
9204 case 1024:
9205 bf_set(lpfc_cq_context_count, &cq_create->u.request.context,
9206 LPFC_CQ_CNT_1024);
9207 break;
9208 }
9209 list_for_each_entry(dmabuf, &cq->page_list, list) {
9210 cq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
9211 putPaddrLow(dmabuf->phys);
9212 cq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
9213 putPaddrHigh(dmabuf->phys);
9214 }
9215 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
9216
9217 /* The IOCTL status is embedded in the mailbox subheader. */
9218 shdr = (union lpfc_sli4_cfg_shdr *) &cq_create->header.cfg_shdr;
9219 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9220 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9221 if (shdr_status || shdr_add_status || rc) {
9222 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9223 "2501 CQ_CREATE mailbox failed with "
9224 "status x%x add_status x%x, mbx status x%x\n",
9225 shdr_status, shdr_add_status, rc);
9226 status = -ENXIO;
9227 goto out;
9228 }
9229 cq->queue_id = bf_get(lpfc_mbx_cq_create_q_id, &cq_create->u.response);
9230 if (cq->queue_id == 0xFFFF) {
9231 status = -ENXIO;
9232 goto out;
9233 }
9234 /* link the cq onto the parent eq child list */
9235 list_add_tail(&cq->list, &eq->child_list);
9236 /* Set up completion queue's type and subtype */
9237 cq->type = type;
9238 cq->subtype = subtype;
9239 cq->queue_id = bf_get(lpfc_mbx_cq_create_q_id, &cq_create->u.response);
9240 cq->host_index = 0;
9241 cq->hba_index = 0;
9242out:
9243
9244 if (rc != MBX_TIMEOUT)
9245 mempool_free(mbox, phba->mbox_mem_pool);
9246 return status;
9247}
9248
9249/**
9250 * lpfc_wq_create - Create a Work Queue on the HBA
9251 * @phba: HBA structure that indicates port to create a queue on.
9252 * @wq: The queue structure to use to create the work queue.
9253 * @cq: The completion queue to bind this work queue to.
9254 * @subtype: The subtype of the work queue indicating its functionality.
9255 *
9256 * This function creates a work queue, as detailed in @wq, on a port, described
9257 * by @phba by sending a WQ_CREATE mailbox command to the HBA.
9258 *
9259 * The @phba struct is used to send mailbox command to HBA. The @wq struct
9260 * is used to get the entry count and entry size that are necessary to
9261 * determine the number of pages to allocate and use for this queue. The @cq
9262 * is used to indicate which completion queue to bind this work queue to. This
9263 * function will send the WQ_CREATE mailbox command to the HBA to setup the
9264 * work queue. This function is asynchronous and will wait for the mailbox
9265 * command to finish before continuing.
9266 *
9267 * On success this function will return a zero. If unable to allocate enough
9268 * memory this function will return ENOMEM. If the queue create mailbox command
9269 * fails this function will return ENXIO.
9270 **/
9271uint32_t
9272lpfc_wq_create(struct lpfc_hba *phba, struct lpfc_queue *wq,
9273 struct lpfc_queue *cq, uint32_t subtype)
9274{
9275 struct lpfc_mbx_wq_create *wq_create;
9276 struct lpfc_dmabuf *dmabuf;
9277 LPFC_MBOXQ_t *mbox;
9278 int rc, length, status = 0;
9279 uint32_t shdr_status, shdr_add_status;
9280 union lpfc_sli4_cfg_shdr *shdr;
9281
9282 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
9283 if (!mbox)
9284 return -ENOMEM;
9285 length = (sizeof(struct lpfc_mbx_wq_create) -
9286 sizeof(struct lpfc_sli4_cfg_mhdr));
9287 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
9288 LPFC_MBOX_OPCODE_FCOE_WQ_CREATE,
9289 length, LPFC_SLI4_MBX_EMBED);
9290 wq_create = &mbox->u.mqe.un.wq_create;
9291 bf_set(lpfc_mbx_wq_create_num_pages, &wq_create->u.request,
9292 wq->page_count);
9293 bf_set(lpfc_mbx_wq_create_cq_id, &wq_create->u.request,
9294 cq->queue_id);
9295 list_for_each_entry(dmabuf, &wq->page_list, list) {
9296 wq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
9297 putPaddrLow(dmabuf->phys);
9298 wq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
9299 putPaddrHigh(dmabuf->phys);
9300 }
9301 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
9302 /* The IOCTL status is embedded in the mailbox subheader. */
9303 shdr = (union lpfc_sli4_cfg_shdr *) &wq_create->header.cfg_shdr;
9304 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9305 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9306 if (shdr_status || shdr_add_status || rc) {
9307 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9308 "2503 WQ_CREATE mailbox failed with "
9309 "status x%x add_status x%x, mbx status x%x\n",
9310 shdr_status, shdr_add_status, rc);
9311 status = -ENXIO;
9312 goto out;
9313 }
9314 wq->queue_id = bf_get(lpfc_mbx_wq_create_q_id, &wq_create->u.response);
9315 if (wq->queue_id == 0xFFFF) {
9316 status = -ENXIO;
9317 goto out;
9318 }
9319 wq->type = LPFC_WQ;
9320 wq->subtype = subtype;
9321 wq->host_index = 0;
9322 wq->hba_index = 0;
9323
9324 /* link the wq onto the parent cq child list */
9325 list_add_tail(&wq->list, &cq->child_list);
9326out:
9327 if (rc == MBX_TIMEOUT)
9328 mempool_free(mbox, phba->mbox_mem_pool);
9329 return status;
9330}
9331
9332/**
9333 * lpfc_rq_create - Create a Receive Queue on the HBA
9334 * @phba: HBA structure that indicates port to create a queue on.
9335 * @hrq: The queue structure to use to create the header receive queue.
9336 * @drq: The queue structure to use to create the data receive queue.
9337 * @cq: The completion queue to bind this work queue to.
9338 *
9339 * This function creates a receive buffer queue pair , as detailed in @hrq and
9340 * @drq, on a port, described by @phba by sending a RQ_CREATE mailbox command
9341 * to the HBA.
9342 *
9343 * The @phba struct is used to send mailbox command to HBA. The @drq and @hrq
9344 * struct is used to get the entry count that is necessary to determine the
9345 * number of pages to use for this queue. The @cq is used to indicate which
9346 * completion queue to bind received buffers that are posted to these queues to.
9347 * This function will send the RQ_CREATE mailbox command to the HBA to setup the
9348 * receive queue pair. This function is asynchronous and will wait for the
9349 * mailbox command to finish before continuing.
9350 *
9351 * On success this function will return a zero. If unable to allocate enough
9352 * memory this function will return ENOMEM. If the queue create mailbox command
9353 * fails this function will return ENXIO.
9354 **/
9355uint32_t
9356lpfc_rq_create(struct lpfc_hba *phba, struct lpfc_queue *hrq,
9357 struct lpfc_queue *drq, struct lpfc_queue *cq, uint32_t subtype)
9358{
9359 struct lpfc_mbx_rq_create *rq_create;
9360 struct lpfc_dmabuf *dmabuf;
9361 LPFC_MBOXQ_t *mbox;
9362 int rc, length, status = 0;
9363 uint32_t shdr_status, shdr_add_status;
9364 union lpfc_sli4_cfg_shdr *shdr;
9365
9366 if (hrq->entry_count != drq->entry_count)
9367 return -EINVAL;
9368 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
9369 if (!mbox)
9370 return -ENOMEM;
9371 length = (sizeof(struct lpfc_mbx_rq_create) -
9372 sizeof(struct lpfc_sli4_cfg_mhdr));
9373 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
9374 LPFC_MBOX_OPCODE_FCOE_RQ_CREATE,
9375 length, LPFC_SLI4_MBX_EMBED);
9376 rq_create = &mbox->u.mqe.un.rq_create;
9377 switch (hrq->entry_count) {
9378 default:
9379 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
9380 "2535 Unsupported RQ count. (%d)\n",
9381 hrq->entry_count);
9382 if (hrq->entry_count < 512)
9383 return -EINVAL;
9384 /* otherwise default to smallest count (drop through) */
9385 case 512:
9386 bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
9387 LPFC_RQ_RING_SIZE_512);
9388 break;
9389 case 1024:
9390 bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
9391 LPFC_RQ_RING_SIZE_1024);
9392 break;
9393 case 2048:
9394 bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
9395 LPFC_RQ_RING_SIZE_2048);
9396 break;
9397 case 4096:
9398 bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
9399 LPFC_RQ_RING_SIZE_4096);
9400 break;
9401 }
9402 bf_set(lpfc_rq_context_cq_id, &rq_create->u.request.context,
9403 cq->queue_id);
9404 bf_set(lpfc_mbx_rq_create_num_pages, &rq_create->u.request,
9405 hrq->page_count);
9406 bf_set(lpfc_rq_context_buf_size, &rq_create->u.request.context,
9407 LPFC_HDR_BUF_SIZE);
9408 list_for_each_entry(dmabuf, &hrq->page_list, list) {
9409 rq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
9410 putPaddrLow(dmabuf->phys);
9411 rq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
9412 putPaddrHigh(dmabuf->phys);
9413 }
9414 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
9415 /* The IOCTL status is embedded in the mailbox subheader. */
9416 shdr = (union lpfc_sli4_cfg_shdr *) &rq_create->header.cfg_shdr;
9417 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9418 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9419 if (shdr_status || shdr_add_status || rc) {
9420 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9421 "2504 RQ_CREATE mailbox failed with "
9422 "status x%x add_status x%x, mbx status x%x\n",
9423 shdr_status, shdr_add_status, rc);
9424 status = -ENXIO;
9425 goto out;
9426 }
9427 hrq->queue_id = bf_get(lpfc_mbx_rq_create_q_id, &rq_create->u.response);
9428 if (hrq->queue_id == 0xFFFF) {
9429 status = -ENXIO;
9430 goto out;
9431 }
9432 hrq->type = LPFC_HRQ;
9433 hrq->subtype = subtype;
9434 hrq->host_index = 0;
9435 hrq->hba_index = 0;
9436
9437 /* now create the data queue */
9438 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
9439 LPFC_MBOX_OPCODE_FCOE_RQ_CREATE,
9440 length, LPFC_SLI4_MBX_EMBED);
9441 switch (drq->entry_count) {
9442 default:
9443 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
9444 "2536 Unsupported RQ count. (%d)\n",
9445 drq->entry_count);
9446 if (drq->entry_count < 512)
9447 return -EINVAL;
9448 /* otherwise default to smallest count (drop through) */
9449 case 512:
9450 bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
9451 LPFC_RQ_RING_SIZE_512);
9452 break;
9453 case 1024:
9454 bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
9455 LPFC_RQ_RING_SIZE_1024);
9456 break;
9457 case 2048:
9458 bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
9459 LPFC_RQ_RING_SIZE_2048);
9460 break;
9461 case 4096:
9462 bf_set(lpfc_rq_context_rq_size, &rq_create->u.request.context,
9463 LPFC_RQ_RING_SIZE_4096);
9464 break;
9465 }
9466 bf_set(lpfc_rq_context_cq_id, &rq_create->u.request.context,
9467 cq->queue_id);
9468 bf_set(lpfc_mbx_rq_create_num_pages, &rq_create->u.request,
9469 drq->page_count);
9470 bf_set(lpfc_rq_context_buf_size, &rq_create->u.request.context,
9471 LPFC_DATA_BUF_SIZE);
9472 list_for_each_entry(dmabuf, &drq->page_list, list) {
9473 rq_create->u.request.page[dmabuf->buffer_tag].addr_lo =
9474 putPaddrLow(dmabuf->phys);
9475 rq_create->u.request.page[dmabuf->buffer_tag].addr_hi =
9476 putPaddrHigh(dmabuf->phys);
9477 }
9478 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
9479 /* The IOCTL status is embedded in the mailbox subheader. */
9480 shdr = (union lpfc_sli4_cfg_shdr *) &rq_create->header.cfg_shdr;
9481 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9482 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9483 if (shdr_status || shdr_add_status || rc) {
9484 status = -ENXIO;
9485 goto out;
9486 }
9487 drq->queue_id = bf_get(lpfc_mbx_rq_create_q_id, &rq_create->u.response);
9488 if (drq->queue_id == 0xFFFF) {
9489 status = -ENXIO;
9490 goto out;
9491 }
9492 drq->type = LPFC_DRQ;
9493 drq->subtype = subtype;
9494 drq->host_index = 0;
9495 drq->hba_index = 0;
9496
9497 /* link the header and data RQs onto the parent cq child list */
9498 list_add_tail(&hrq->list, &cq->child_list);
9499 list_add_tail(&drq->list, &cq->child_list);
9500
9501out:
9502 if (rc != MBX_TIMEOUT)
9503 mempool_free(mbox, phba->mbox_mem_pool);
9504 return status;
9505}
9506
9507/**
9508 * lpfc_eq_destroy - Destroy an event Queue on the HBA
9509 * @eq: The queue structure associated with the queue to destroy.
9510 *
9511 * This function destroys a queue, as detailed in @eq by sending an mailbox
9512 * command, specific to the type of queue, to the HBA.
9513 *
9514 * The @eq struct is used to get the queue ID of the queue to destroy.
9515 *
9516 * On success this function will return a zero. If the queue destroy mailbox
9517 * command fails this function will return ENXIO.
9518 **/
9519uint32_t
9520lpfc_eq_destroy(struct lpfc_hba *phba, struct lpfc_queue *eq)
9521{
9522 LPFC_MBOXQ_t *mbox;
9523 int rc, length, status = 0;
9524 uint32_t shdr_status, shdr_add_status;
9525 union lpfc_sli4_cfg_shdr *shdr;
9526
9527 if (!eq)
9528 return -ENODEV;
9529 mbox = mempool_alloc(eq->phba->mbox_mem_pool, GFP_KERNEL);
9530 if (!mbox)
9531 return -ENOMEM;
9532 length = (sizeof(struct lpfc_mbx_eq_destroy) -
9533 sizeof(struct lpfc_sli4_cfg_mhdr));
9534 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
9535 LPFC_MBOX_OPCODE_EQ_DESTROY,
9536 length, LPFC_SLI4_MBX_EMBED);
9537 bf_set(lpfc_mbx_eq_destroy_q_id, &mbox->u.mqe.un.eq_destroy.u.request,
9538 eq->queue_id);
9539 mbox->vport = eq->phba->pport;
9540 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
9541
9542 rc = lpfc_sli_issue_mbox(eq->phba, mbox, MBX_POLL);
9543 /* The IOCTL status is embedded in the mailbox subheader. */
9544 shdr = (union lpfc_sli4_cfg_shdr *)
9545 &mbox->u.mqe.un.eq_destroy.header.cfg_shdr;
9546 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9547 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9548 if (shdr_status || shdr_add_status || rc) {
9549 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9550 "2505 EQ_DESTROY mailbox failed with "
9551 "status x%x add_status x%x, mbx status x%x\n",
9552 shdr_status, shdr_add_status, rc);
9553 status = -ENXIO;
9554 }
9555
9556 /* Remove eq from any list */
9557 list_del_init(&eq->list);
9558 if (rc != MBX_TIMEOUT)
9559 mempool_free(mbox, eq->phba->mbox_mem_pool);
9560 return status;
9561}
9562
9563/**
9564 * lpfc_cq_destroy - Destroy a Completion Queue on the HBA
9565 * @cq: The queue structure associated with the queue to destroy.
9566 *
9567 * This function destroys a queue, as detailed in @cq by sending an mailbox
9568 * command, specific to the type of queue, to the HBA.
9569 *
9570 * The @cq struct is used to get the queue ID of the queue to destroy.
9571 *
9572 * On success this function will return a zero. If the queue destroy mailbox
9573 * command fails this function will return ENXIO.
9574 **/
9575uint32_t
9576lpfc_cq_destroy(struct lpfc_hba *phba, struct lpfc_queue *cq)
9577{
9578 LPFC_MBOXQ_t *mbox;
9579 int rc, length, status = 0;
9580 uint32_t shdr_status, shdr_add_status;
9581 union lpfc_sli4_cfg_shdr *shdr;
9582
9583 if (!cq)
9584 return -ENODEV;
9585 mbox = mempool_alloc(cq->phba->mbox_mem_pool, GFP_KERNEL);
9586 if (!mbox)
9587 return -ENOMEM;
9588 length = (sizeof(struct lpfc_mbx_cq_destroy) -
9589 sizeof(struct lpfc_sli4_cfg_mhdr));
9590 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_COMMON,
9591 LPFC_MBOX_OPCODE_CQ_DESTROY,
9592 length, LPFC_SLI4_MBX_EMBED);
9593 bf_set(lpfc_mbx_cq_destroy_q_id, &mbox->u.mqe.un.cq_destroy.u.request,
9594 cq->queue_id);
9595 mbox->vport = cq->phba->pport;
9596 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
9597 rc = lpfc_sli_issue_mbox(cq->phba, mbox, MBX_POLL);
9598 /* The IOCTL status is embedded in the mailbox subheader. */
9599 shdr = (union lpfc_sli4_cfg_shdr *)
9600 &mbox->u.mqe.un.wq_create.header.cfg_shdr;
9601 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9602 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9603 if (shdr_status || shdr_add_status || rc) {
9604 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9605 "2506 CQ_DESTROY mailbox failed with "
9606 "status x%x add_status x%x, mbx status x%x\n",
9607 shdr_status, shdr_add_status, rc);
9608 status = -ENXIO;
9609 }
9610 /* Remove cq from any list */
9611 list_del_init(&cq->list);
9612 if (rc != MBX_TIMEOUT)
9613 mempool_free(mbox, cq->phba->mbox_mem_pool);
9614 return status;
9615}
9616
9617/**
9618 * lpfc_wq_destroy - Destroy a Work Queue on the HBA
9619 * @wq: The queue structure associated with the queue to destroy.
9620 *
9621 * This function destroys a queue, as detailed in @wq by sending an mailbox
9622 * command, specific to the type of queue, to the HBA.
9623 *
9624 * The @wq struct is used to get the queue ID of the queue to destroy.
9625 *
9626 * On success this function will return a zero. If the queue destroy mailbox
9627 * command fails this function will return ENXIO.
9628 **/
9629uint32_t
9630lpfc_wq_destroy(struct lpfc_hba *phba, struct lpfc_queue *wq)
9631{
9632 LPFC_MBOXQ_t *mbox;
9633 int rc, length, status = 0;
9634 uint32_t shdr_status, shdr_add_status;
9635 union lpfc_sli4_cfg_shdr *shdr;
9636
9637 if (!wq)
9638 return -ENODEV;
9639 mbox = mempool_alloc(wq->phba->mbox_mem_pool, GFP_KERNEL);
9640 if (!mbox)
9641 return -ENOMEM;
9642 length = (sizeof(struct lpfc_mbx_wq_destroy) -
9643 sizeof(struct lpfc_sli4_cfg_mhdr));
9644 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
9645 LPFC_MBOX_OPCODE_FCOE_WQ_DESTROY,
9646 length, LPFC_SLI4_MBX_EMBED);
9647 bf_set(lpfc_mbx_wq_destroy_q_id, &mbox->u.mqe.un.wq_destroy.u.request,
9648 wq->queue_id);
9649 mbox->vport = wq->phba->pport;
9650 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
9651 rc = lpfc_sli_issue_mbox(wq->phba, mbox, MBX_POLL);
9652 shdr = (union lpfc_sli4_cfg_shdr *)
9653 &mbox->u.mqe.un.wq_destroy.header.cfg_shdr;
9654 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9655 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9656 if (shdr_status || shdr_add_status || rc) {
9657 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9658 "2508 WQ_DESTROY mailbox failed with "
9659 "status x%x add_status x%x, mbx status x%x\n",
9660 shdr_status, shdr_add_status, rc);
9661 status = -ENXIO;
9662 }
9663 /* Remove wq from any list */
9664 list_del_init(&wq->list);
9665 if (rc != MBX_TIMEOUT)
9666 mempool_free(mbox, wq->phba->mbox_mem_pool);
9667 return status;
9668}
9669
9670/**
9671 * lpfc_rq_destroy - Destroy a Receive Queue on the HBA
9672 * @rq: The queue structure associated with the queue to destroy.
9673 *
9674 * This function destroys a queue, as detailed in @rq by sending an mailbox
9675 * command, specific to the type of queue, to the HBA.
9676 *
9677 * The @rq struct is used to get the queue ID of the queue to destroy.
9678 *
9679 * On success this function will return a zero. If the queue destroy mailbox
9680 * command fails this function will return ENXIO.
9681 **/
9682uint32_t
9683lpfc_rq_destroy(struct lpfc_hba *phba, struct lpfc_queue *hrq,
9684 struct lpfc_queue *drq)
9685{
9686 LPFC_MBOXQ_t *mbox;
9687 int rc, length, status = 0;
9688 uint32_t shdr_status, shdr_add_status;
9689 union lpfc_sli4_cfg_shdr *shdr;
9690
9691 if (!hrq || !drq)
9692 return -ENODEV;
9693 mbox = mempool_alloc(hrq->phba->mbox_mem_pool, GFP_KERNEL);
9694 if (!mbox)
9695 return -ENOMEM;
9696 length = (sizeof(struct lpfc_mbx_rq_destroy) -
9697 sizeof(struct mbox_header));
9698 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
9699 LPFC_MBOX_OPCODE_FCOE_RQ_DESTROY,
9700 length, LPFC_SLI4_MBX_EMBED);
9701 bf_set(lpfc_mbx_rq_destroy_q_id, &mbox->u.mqe.un.rq_destroy.u.request,
9702 hrq->queue_id);
9703 mbox->vport = hrq->phba->pport;
9704 mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
9705 rc = lpfc_sli_issue_mbox(hrq->phba, mbox, MBX_POLL);
9706 /* The IOCTL status is embedded in the mailbox subheader. */
9707 shdr = (union lpfc_sli4_cfg_shdr *)
9708 &mbox->u.mqe.un.rq_destroy.header.cfg_shdr;
9709 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9710 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9711 if (shdr_status || shdr_add_status || rc) {
9712 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9713 "2509 RQ_DESTROY mailbox failed with "
9714 "status x%x add_status x%x, mbx status x%x\n",
9715 shdr_status, shdr_add_status, rc);
9716 if (rc != MBX_TIMEOUT)
9717 mempool_free(mbox, hrq->phba->mbox_mem_pool);
9718 return -ENXIO;
9719 }
9720 bf_set(lpfc_mbx_rq_destroy_q_id, &mbox->u.mqe.un.rq_destroy.u.request,
9721 drq->queue_id);
9722 rc = lpfc_sli_issue_mbox(drq->phba, mbox, MBX_POLL);
9723 shdr = (union lpfc_sli4_cfg_shdr *)
9724 &mbox->u.mqe.un.rq_destroy.header.cfg_shdr;
9725 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9726 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9727 if (shdr_status || shdr_add_status || rc) {
9728 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9729 "2510 RQ_DESTROY mailbox failed with "
9730 "status x%x add_status x%x, mbx status x%x\n",
9731 shdr_status, shdr_add_status, rc);
9732 status = -ENXIO;
9733 }
9734 list_del_init(&hrq->list);
9735 list_del_init(&drq->list);
9736 if (rc != MBX_TIMEOUT)
9737 mempool_free(mbox, hrq->phba->mbox_mem_pool);
9738 return status;
9739}
9740
9741/**
9742 * lpfc_sli4_post_sgl - Post scatter gather list for an XRI to HBA
9743 * @phba: The virtual port for which this call being executed.
9744 * @pdma_phys_addr0: Physical address of the 1st SGL page.
9745 * @pdma_phys_addr1: Physical address of the 2nd SGL page.
9746 * @xritag: the xritag that ties this io to the SGL pages.
9747 *
9748 * This routine will post the sgl pages for the IO that has the xritag
9749 * that is in the iocbq structure. The xritag is assigned during iocbq
9750 * creation and persists for as long as the driver is loaded.
9751 * if the caller has fewer than 256 scatter gather segments to map then
9752 * pdma_phys_addr1 should be 0.
9753 * If the caller needs to map more than 256 scatter gather segment then
9754 * pdma_phys_addr1 should be a valid physical address.
9755 * physical address for SGLs must be 64 byte aligned.
9756 * If you are going to map 2 SGL's then the first one must have 256 entries
9757 * the second sgl can have between 1 and 256 entries.
9758 *
9759 * Return codes:
9760 * 0 - Success
9761 * -ENXIO, -ENOMEM - Failure
9762 **/
9763int
9764lpfc_sli4_post_sgl(struct lpfc_hba *phba,
9765 dma_addr_t pdma_phys_addr0,
9766 dma_addr_t pdma_phys_addr1,
9767 uint16_t xritag)
9768{
9769 struct lpfc_mbx_post_sgl_pages *post_sgl_pages;
9770 LPFC_MBOXQ_t *mbox;
9771 int rc;
9772 uint32_t shdr_status, shdr_add_status;
9773 union lpfc_sli4_cfg_shdr *shdr;
9774
9775 if (xritag == NO_XRI) {
9776 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
9777 "0364 Invalid param:\n");
9778 return -EINVAL;
9779 }
9780
9781 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
9782 if (!mbox)
9783 return -ENOMEM;
9784
9785 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
9786 LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES,
9787 sizeof(struct lpfc_mbx_post_sgl_pages) -
9788 sizeof(struct mbox_header), LPFC_SLI4_MBX_EMBED);
9789
9790 post_sgl_pages = (struct lpfc_mbx_post_sgl_pages *)
9791 &mbox->u.mqe.un.post_sgl_pages;
9792 bf_set(lpfc_post_sgl_pages_xri, post_sgl_pages, xritag);
9793 bf_set(lpfc_post_sgl_pages_xricnt, post_sgl_pages, 1);
9794
9795 post_sgl_pages->sgl_pg_pairs[0].sgl_pg0_addr_lo =
9796 cpu_to_le32(putPaddrLow(pdma_phys_addr0));
9797 post_sgl_pages->sgl_pg_pairs[0].sgl_pg0_addr_hi =
9798 cpu_to_le32(putPaddrHigh(pdma_phys_addr0));
9799
9800 post_sgl_pages->sgl_pg_pairs[0].sgl_pg1_addr_lo =
9801 cpu_to_le32(putPaddrLow(pdma_phys_addr1));
9802 post_sgl_pages->sgl_pg_pairs[0].sgl_pg1_addr_hi =
9803 cpu_to_le32(putPaddrHigh(pdma_phys_addr1));
9804 if (!phba->sli4_hba.intr_enable)
9805 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
9806 else
9807 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
9808 /* The IOCTL status is embedded in the mailbox subheader. */
9809 shdr = (union lpfc_sli4_cfg_shdr *) &post_sgl_pages->header.cfg_shdr;
9810 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9811 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9812 if (rc != MBX_TIMEOUT)
9813 mempool_free(mbox, phba->mbox_mem_pool);
9814 if (shdr_status || shdr_add_status || rc) {
9815 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9816 "2511 POST_SGL mailbox failed with "
9817 "status x%x add_status x%x, mbx status x%x\n",
9818 shdr_status, shdr_add_status, rc);
9819 rc = -ENXIO;
9820 }
9821 return 0;
9822}
9823/**
9824 * lpfc_sli4_remove_all_sgl_pages - Post scatter gather list for an XRI to HBA
9825 * @phba: The virtual port for which this call being executed.
9826 *
9827 * This routine will remove all of the sgl pages registered with the hba.
9828 *
9829 * Return codes:
9830 * 0 - Success
9831 * -ENXIO, -ENOMEM - Failure
9832 **/
9833int
9834lpfc_sli4_remove_all_sgl_pages(struct lpfc_hba *phba)
9835{
9836 LPFC_MBOXQ_t *mbox;
9837 int rc;
9838 uint32_t shdr_status, shdr_add_status;
9839 union lpfc_sli4_cfg_shdr *shdr;
9840
9841 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
9842 if (!mbox)
9843 return -ENOMEM;
9844
9845 lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
9846 LPFC_MBOX_OPCODE_FCOE_REMOVE_SGL_PAGES, 0,
9847 LPFC_SLI4_MBX_EMBED);
9848 if (!phba->sli4_hba.intr_enable)
9849 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
9850 else
9851 rc = lpfc_sli_issue_mbox_wait(phba, mbox, LPFC_MBOX_TMO);
9852 /* The IOCTL status is embedded in the mailbox subheader. */
9853 shdr = (union lpfc_sli4_cfg_shdr *)
9854 &mbox->u.mqe.un.sli4_config.header.cfg_shdr;
9855 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
9856 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
9857 if (rc != MBX_TIMEOUT)
9858 mempool_free(mbox, phba->mbox_mem_pool);
9859 if (shdr_status || shdr_add_status || rc) {
9860 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9861 "2512 REMOVE_ALL_SGL_PAGES mailbox failed with "
9862 "status x%x add_status x%x, mbx status x%x\n",
9863 shdr_status, shdr_add_status, rc);
9864 rc = -ENXIO;
9865 }
9866 return rc;
9867}
9868
9869/**
9870 * lpfc_sli4_next_xritag - Get an xritag for the io
9871 * @phba: Pointer to HBA context object.
9872 *
9873 * This function gets an xritag for the iocb. If there is no unused xritag
9874 * it will return 0xffff.
9875 * The function returns the allocated xritag if successful, else returns zero.
9876 * Zero is not a valid xritag.
9877 * The caller is not required to hold any lock.
9878 **/
9879uint16_t
9880lpfc_sli4_next_xritag(struct lpfc_hba *phba)
9881{
9882 uint16_t xritag;
9883
9884 spin_lock_irq(&phba->hbalock);
9885 xritag = phba->sli4_hba.next_xri;
9886 if ((xritag != (uint16_t) -1) && xritag <
9887 (phba->sli4_hba.max_cfg_param.max_xri
9888 + phba->sli4_hba.max_cfg_param.xri_base)) {
9889 phba->sli4_hba.next_xri++;
9890 phba->sli4_hba.max_cfg_param.xri_used++;
9891 spin_unlock_irq(&phba->hbalock);
9892 return xritag;
9893 }
9894 spin_unlock_irq(&phba->hbalock);
9895
9896 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
9897 "2004 Failed to allocate XRI.last XRITAG is %d"
9898 " Max XRI is %d, Used XRI is %d\n",
9899 phba->sli4_hba.next_xri,
9900 phba->sli4_hba.max_cfg_param.max_xri,
9901 phba->sli4_hba.max_cfg_param.xri_used);
9902 return -1;
9903}
9904
9905/**
9906 * lpfc_sli4_post_sgl_list - post a block of sgl list to the firmware.
9907 * @phba: pointer to lpfc hba data structure.
9908 *
9909 * This routine is invoked to post a block of driver's sgl pages to the
9910 * HBA using non-embedded mailbox command. No Lock is held. This routine
9911 * is only called when the driver is loading and after all IO has been
9912 * stopped.
9913 **/
9914int
9915lpfc_sli4_post_sgl_list(struct lpfc_hba *phba)
9916{
9917 struct lpfc_sglq *sglq_entry;
9918 struct lpfc_mbx_post_uembed_sgl_page1 *sgl;
9919 struct sgl_page_pairs *sgl_pg_pairs;
9920 void *viraddr;
9921 LPFC_MBOXQ_t *mbox;
9922 uint32_t reqlen, alloclen, pg_pairs;
9923 uint32_t mbox_tmo;
9924 uint16_t xritag_start = 0;
9925 int els_xri_cnt, rc = 0;
9926 uint32_t shdr_status, shdr_add_status;
9927 union lpfc_sli4_cfg_shdr *shdr;
9928
9929 /* The number of sgls to be posted */
9930 els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
9931
9932 reqlen = els_xri_cnt * sizeof(struct sgl_page_pairs) +
9933 sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t);
9934 if (reqlen > PAGE_SIZE) {
9935 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
9936 "2559 Block sgl registration required DMA "
9937 "size (%d) great than a page\n", reqlen);
9938 return -ENOMEM;
9939 }
9940 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
9941 if (!mbox) {
9942 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9943 "2560 Failed to allocate mbox cmd memory\n");
9944 return -ENOMEM;
9945 }
9946
9947 /* Allocate DMA memory and set up the non-embedded mailbox command */
9948 alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
9949 LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, reqlen,
9950 LPFC_SLI4_MBX_NEMBED);
9951
9952 if (alloclen < reqlen) {
9953 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9954 "0285 Allocated DMA memory size (%d) is "
9955 "less than the requested DMA memory "
9956 "size (%d)\n", alloclen, reqlen);
9957 lpfc_sli4_mbox_cmd_free(phba, mbox);
9958 return -ENOMEM;
9959 }
9960
9961 /* Get the first SGE entry from the non-embedded DMA memory */
9962 if (unlikely(!mbox->sge_array)) {
9963 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
9964 "2525 Failed to get the non-embedded SGE "
9965 "virtual address\n");
9966 lpfc_sli4_mbox_cmd_free(phba, mbox);
9967 return -ENOMEM;
9968 }
9969 viraddr = mbox->sge_array->addr[0];
9970
9971 /* Set up the SGL pages in the non-embedded DMA pages */
9972 sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr;
9973 sgl_pg_pairs = &sgl->sgl_pg_pairs;
9974
9975 for (pg_pairs = 0; pg_pairs < els_xri_cnt; pg_pairs++) {
9976 sglq_entry = phba->sli4_hba.lpfc_els_sgl_array[pg_pairs];
9977 /* Set up the sge entry */
9978 sgl_pg_pairs->sgl_pg0_addr_lo =
9979 cpu_to_le32(putPaddrLow(sglq_entry->phys));
9980 sgl_pg_pairs->sgl_pg0_addr_hi =
9981 cpu_to_le32(putPaddrHigh(sglq_entry->phys));
9982 sgl_pg_pairs->sgl_pg1_addr_lo =
9983 cpu_to_le32(putPaddrLow(0));
9984 sgl_pg_pairs->sgl_pg1_addr_hi =
9985 cpu_to_le32(putPaddrHigh(0));
9986 /* Keep the first xritag on the list */
9987 if (pg_pairs == 0)
9988 xritag_start = sglq_entry->sli4_xritag;
9989 sgl_pg_pairs++;
9990 }
9991 bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start);
9992 pg_pairs = (pg_pairs > 0) ? (pg_pairs - 1) : pg_pairs;
9993 bf_set(lpfc_post_sgl_pages_xricnt, sgl, pg_pairs);
9994 /* Perform endian conversion if necessary */
9995 sgl->word0 = cpu_to_le32(sgl->word0);
9996
9997 if (!phba->sli4_hba.intr_enable)
9998 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
9999 else {
10000 mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG);
10001 rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
10002 }
10003 shdr = (union lpfc_sli4_cfg_shdr *) &sgl->cfg_shdr;
10004 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
10005 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
10006 if (rc != MBX_TIMEOUT)
10007 lpfc_sli4_mbox_cmd_free(phba, mbox);
10008 if (shdr_status || shdr_add_status || rc) {
10009 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
10010 "2513 POST_SGL_BLOCK mailbox command failed "
10011 "status x%x add_status x%x mbx status x%x\n",
10012 shdr_status, shdr_add_status, rc);
10013 rc = -ENXIO;
10014 }
10015 return rc;
10016}
10017
10018/**
10019 * lpfc_sli4_post_scsi_sgl_block - post a block of scsi sgl list to firmware
10020 * @phba: pointer to lpfc hba data structure.
10021 * @sblist: pointer to scsi buffer list.
10022 * @count: number of scsi buffers on the list.
10023 *
10024 * This routine is invoked to post a block of @count scsi sgl pages from a
10025 * SCSI buffer list @sblist to the HBA using non-embedded mailbox command.
10026 * No Lock is held.
10027 *
10028 **/
10029int
10030lpfc_sli4_post_scsi_sgl_block(struct lpfc_hba *phba, struct list_head *sblist,
10031 int cnt)
10032{
10033 struct lpfc_scsi_buf *psb;
10034 struct lpfc_mbx_post_uembed_sgl_page1 *sgl;
10035 struct sgl_page_pairs *sgl_pg_pairs;
10036 void *viraddr;
10037 LPFC_MBOXQ_t *mbox;
10038 uint32_t reqlen, alloclen, pg_pairs;
10039 uint32_t mbox_tmo;
10040 uint16_t xritag_start = 0;
10041 int rc = 0;
10042 uint32_t shdr_status, shdr_add_status;
10043 dma_addr_t pdma_phys_bpl1;
10044 union lpfc_sli4_cfg_shdr *shdr;
10045
10046 /* Calculate the requested length of the dma memory */
10047 reqlen = cnt * sizeof(struct sgl_page_pairs) +
10048 sizeof(union lpfc_sli4_cfg_shdr) + sizeof(uint32_t);
10049 if (reqlen > PAGE_SIZE) {
10050 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
10051 "0217 Block sgl registration required DMA "
10052 "size (%d) great than a page\n", reqlen);
10053 return -ENOMEM;
10054 }
10055 mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
10056 if (!mbox) {
10057 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10058 "0283 Failed to allocate mbox cmd memory\n");
10059 return -ENOMEM;
10060 }
10061
10062 /* Allocate DMA memory and set up the non-embedded mailbox command */
10063 alloclen = lpfc_sli4_config(phba, mbox, LPFC_MBOX_SUBSYSTEM_FCOE,
10064 LPFC_MBOX_OPCODE_FCOE_POST_SGL_PAGES, reqlen,
10065 LPFC_SLI4_MBX_NEMBED);
10066
10067 if (alloclen < reqlen) {
10068 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
10069 "2561 Allocated DMA memory size (%d) is "
10070 "less than the requested DMA memory "
10071 "size (%d)\n", alloclen, reqlen);
10072 lpfc_sli4_mbox_cmd_free(phba, mbox);
10073 return -ENOMEM;
10074 }
10075
10076 /* Get the first SGE entry from the non-embedded DMA memory */
10077 if (unlikely(!mbox->sge_array)) {
10078 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
10079 "2565 Failed to get the non-embedded SGE "
10080 "virtual address\n");
10081 lpfc_sli4_mbox_cmd_free(phba, mbox);
10082 return -ENOMEM;
10083 }
10084 viraddr = mbox->sge_array->addr[0];
10085
10086 /* Set up the SGL pages in the non-embedded DMA pages */
10087 sgl = (struct lpfc_mbx_post_uembed_sgl_page1 *)viraddr;
10088 sgl_pg_pairs = &sgl->sgl_pg_pairs;
10089
10090 pg_pairs = 0;
10091 list_for_each_entry(psb, sblist, list) {
10092 /* Set up the sge entry */
10093 sgl_pg_pairs->sgl_pg0_addr_lo =
10094 cpu_to_le32(putPaddrLow(psb->dma_phys_bpl));
10095 sgl_pg_pairs->sgl_pg0_addr_hi =
10096 cpu_to_le32(putPaddrHigh(psb->dma_phys_bpl));
10097 if (phba->cfg_sg_dma_buf_size > SGL_PAGE_SIZE)
10098 pdma_phys_bpl1 = psb->dma_phys_bpl + SGL_PAGE_SIZE;
10099 else
10100 pdma_phys_bpl1 = 0;
10101 sgl_pg_pairs->sgl_pg1_addr_lo =
10102 cpu_to_le32(putPaddrLow(pdma_phys_bpl1));
10103 sgl_pg_pairs->sgl_pg1_addr_hi =
10104 cpu_to_le32(putPaddrHigh(pdma_phys_bpl1));
10105 /* Keep the first xritag on the list */
10106 if (pg_pairs == 0)
10107 xritag_start = psb->cur_iocbq.sli4_xritag;
10108 sgl_pg_pairs++;
10109 pg_pairs++;
10110 }
10111 bf_set(lpfc_post_sgl_pages_xri, sgl, xritag_start);
10112 bf_set(lpfc_post_sgl_pages_xricnt, sgl, pg_pairs);
10113 /* Perform endian conversion if necessary */
10114 sgl->word0 = cpu_to_le32(sgl->word0);
10115
10116 if (!phba->sli4_hba.intr_enable)
10117 rc = lpfc_sli_issue_mbox(phba, mbox, MBX_POLL);
10118 else {
10119 mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG);
10120 rc = lpfc_sli_issue_mbox_wait(phba, mbox, mbox_tmo);
10121 }
10122 shdr = (union lpfc_sli4_cfg_shdr *) &sgl->cfg_shdr;
10123 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
10124 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
10125 if (rc != MBX_TIMEOUT)
10126 lpfc_sli4_mbox_cmd_free(phba, mbox);
10127 if (shdr_status || shdr_add_status || rc) {
10128 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
10129 "2564 POST_SGL_BLOCK mailbox command failed "
10130 "status x%x add_status x%x mbx status x%x\n",
10131 shdr_status, shdr_add_status, rc);
10132 rc = -ENXIO;
10133 }
10134 return rc;
10135}
10136
10137/**
10138 * lpfc_fc_frame_check - Check that this frame is a valid frame to handle
10139 * @phba: pointer to lpfc_hba struct that the frame was received on
10140 * @fc_hdr: A pointer to the FC Header data (In Big Endian Format)
10141 *
10142 * This function checks the fields in the @fc_hdr to see if the FC frame is a
10143 * valid type of frame that the LPFC driver will handle. This function will
10144 * return a zero if the frame is a valid frame or a non zero value when the
10145 * frame does not pass the check.
10146 **/
10147static int
10148lpfc_fc_frame_check(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr)
10149{
10150 char *rctl_names[] = FC_RCTL_NAMES_INIT;
10151 char *type_names[] = FC_TYPE_NAMES_INIT;
10152 struct fc_vft_header *fc_vft_hdr;
10153
10154 switch (fc_hdr->fh_r_ctl) {
10155 case FC_RCTL_DD_UNCAT: /* uncategorized information */
10156 case FC_RCTL_DD_SOL_DATA: /* solicited data */
10157 case FC_RCTL_DD_UNSOL_CTL: /* unsolicited control */
10158 case FC_RCTL_DD_SOL_CTL: /* solicited control or reply */
10159 case FC_RCTL_DD_UNSOL_DATA: /* unsolicited data */
10160 case FC_RCTL_DD_DATA_DESC: /* data descriptor */
10161 case FC_RCTL_DD_UNSOL_CMD: /* unsolicited command */
10162 case FC_RCTL_DD_CMD_STATUS: /* command status */
10163 case FC_RCTL_ELS_REQ: /* extended link services request */
10164 case FC_RCTL_ELS_REP: /* extended link services reply */
10165 case FC_RCTL_ELS4_REQ: /* FC-4 ELS request */
10166 case FC_RCTL_ELS4_REP: /* FC-4 ELS reply */
10167 case FC_RCTL_BA_NOP: /* basic link service NOP */
10168 case FC_RCTL_BA_ABTS: /* basic link service abort */
10169 case FC_RCTL_BA_RMC: /* remove connection */
10170 case FC_RCTL_BA_ACC: /* basic accept */
10171 case FC_RCTL_BA_RJT: /* basic reject */
10172 case FC_RCTL_BA_PRMT:
10173 case FC_RCTL_ACK_1: /* acknowledge_1 */
10174 case FC_RCTL_ACK_0: /* acknowledge_0 */
10175 case FC_RCTL_P_RJT: /* port reject */
10176 case FC_RCTL_F_RJT: /* fabric reject */
10177 case FC_RCTL_P_BSY: /* port busy */
10178 case FC_RCTL_F_BSY: /* fabric busy to data frame */
10179 case FC_RCTL_F_BSYL: /* fabric busy to link control frame */
10180 case FC_RCTL_LCR: /* link credit reset */
10181 case FC_RCTL_END: /* end */
10182 break;
10183 case FC_RCTL_VFTH: /* Virtual Fabric tagging Header */
10184 fc_vft_hdr = (struct fc_vft_header *)fc_hdr;
10185 fc_hdr = &((struct fc_frame_header *)fc_vft_hdr)[1];
10186 return lpfc_fc_frame_check(phba, fc_hdr);
10187 default:
10188 goto drop;
10189 }
10190 switch (fc_hdr->fh_type) {
10191 case FC_TYPE_BLS:
10192 case FC_TYPE_ELS:
10193 case FC_TYPE_FCP:
10194 case FC_TYPE_CT:
10195 break;
10196 case FC_TYPE_IP:
10197 case FC_TYPE_ILS:
10198 default:
10199 goto drop;
10200 }
10201 lpfc_printf_log(phba, KERN_INFO, LOG_ELS,
10202 "2538 Received frame rctl:%s type:%s\n",
10203 rctl_names[fc_hdr->fh_r_ctl],
10204 type_names[fc_hdr->fh_type]);
10205 return 0;
10206drop:
10207 lpfc_printf_log(phba, KERN_WARNING, LOG_ELS,
10208 "2539 Dropped frame rctl:%s type:%s\n",
10209 rctl_names[fc_hdr->fh_r_ctl],
10210 type_names[fc_hdr->fh_type]);
10211 return 1;
10212}
10213
10214/**
10215 * lpfc_fc_hdr_get_vfi - Get the VFI from an FC frame
10216 * @fc_hdr: A pointer to the FC Header data (In Big Endian Format)
10217 *
10218 * This function processes the FC header to retrieve the VFI from the VF
10219 * header, if one exists. This function will return the VFI if one exists
10220 * or 0 if no VSAN Header exists.
10221 **/
10222static uint32_t
10223lpfc_fc_hdr_get_vfi(struct fc_frame_header *fc_hdr)
10224{
10225 struct fc_vft_header *fc_vft_hdr = (struct fc_vft_header *)fc_hdr;
10226
10227 if (fc_hdr->fh_r_ctl != FC_RCTL_VFTH)
10228 return 0;
10229 return bf_get(fc_vft_hdr_vf_id, fc_vft_hdr);
10230}
10231
10232/**
10233 * lpfc_fc_frame_to_vport - Finds the vport that a frame is destined to
10234 * @phba: Pointer to the HBA structure to search for the vport on
10235 * @fc_hdr: A pointer to the FC Header data (In Big Endian Format)
10236 * @fcfi: The FC Fabric ID that the frame came from
10237 *
10238 * This function searches the @phba for a vport that matches the content of the
10239 * @fc_hdr passed in and the @fcfi. This function uses the @fc_hdr to fetch the
10240 * VFI, if the Virtual Fabric Tagging Header exists, and the DID. This function
10241 * returns the matching vport pointer or NULL if unable to match frame to a
10242 * vport.
10243 **/
10244static struct lpfc_vport *
10245lpfc_fc_frame_to_vport(struct lpfc_hba *phba, struct fc_frame_header *fc_hdr,
10246 uint16_t fcfi)
10247{
10248 struct lpfc_vport **vports;
10249 struct lpfc_vport *vport = NULL;
10250 int i;
10251 uint32_t did = (fc_hdr->fh_d_id[0] << 16 |
10252 fc_hdr->fh_d_id[1] << 8 |
10253 fc_hdr->fh_d_id[2]);
10254
10255 vports = lpfc_create_vport_work_array(phba);
10256 if (vports != NULL)
10257 for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) {
10258 if (phba->fcf.fcfi == fcfi &&
10259 vports[i]->vfi == lpfc_fc_hdr_get_vfi(fc_hdr) &&
10260 vports[i]->fc_myDID == did) {
10261 vport = vports[i];
10262 break;
10263 }
10264 }
10265 lpfc_destroy_vport_work_array(phba, vports);
10266 return vport;
10267}
10268
10269/**
10270 * lpfc_fc_frame_add - Adds a frame to the vport's list of received sequences
10271 * @dmabuf: pointer to a dmabuf that describes the hdr and data of the FC frame
10272 *
10273 * This function searches through the existing incomplete sequences that have
10274 * been sent to this @vport. If the frame matches one of the incomplete
10275 * sequences then the dbuf in the @dmabuf is added to the list of frames that
10276 * make up that sequence. If no sequence is found that matches this frame then
10277 * the function will add the hbuf in the @dmabuf to the @vport's rcv_buffer_list
10278 * This function returns a pointer to the first dmabuf in the sequence list that
10279 * the frame was linked to.
10280 **/
10281static struct hbq_dmabuf *
10282lpfc_fc_frame_add(struct lpfc_vport *vport, struct hbq_dmabuf *dmabuf)
10283{
10284 struct fc_frame_header *new_hdr;
10285 struct fc_frame_header *temp_hdr;
10286 struct lpfc_dmabuf *d_buf;
10287 struct lpfc_dmabuf *h_buf;
10288 struct hbq_dmabuf *seq_dmabuf = NULL;
10289 struct hbq_dmabuf *temp_dmabuf = NULL;
10290
10291 new_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
10292 /* Use the hdr_buf to find the sequence that this frame belongs to */
10293 list_for_each_entry(h_buf, &vport->rcv_buffer_list, list) {
10294 temp_hdr = (struct fc_frame_header *)h_buf->virt;
10295 if ((temp_hdr->fh_seq_id != new_hdr->fh_seq_id) ||
10296 (temp_hdr->fh_ox_id != new_hdr->fh_ox_id) ||
10297 (memcmp(&temp_hdr->fh_s_id, &new_hdr->fh_s_id, 3)))
10298 continue;
10299 /* found a pending sequence that matches this frame */
10300 seq_dmabuf = container_of(h_buf, struct hbq_dmabuf, hbuf);
10301 break;
10302 }
10303 if (!seq_dmabuf) {
10304 /*
10305 * This indicates first frame received for this sequence.
10306 * Queue the buffer on the vport's rcv_buffer_list.
10307 */
10308 list_add_tail(&dmabuf->hbuf.list, &vport->rcv_buffer_list);
10309 return dmabuf;
10310 }
10311 temp_hdr = seq_dmabuf->hbuf.virt;
10312 if (new_hdr->fh_seq_cnt < temp_hdr->fh_seq_cnt) {
10313 list_add(&seq_dmabuf->dbuf.list, &dmabuf->dbuf.list);
10314 return dmabuf;
10315 }
10316 /* find the correct place in the sequence to insert this frame */
10317 list_for_each_entry_reverse(d_buf, &seq_dmabuf->dbuf.list, list) {
10318 temp_dmabuf = container_of(d_buf, struct hbq_dmabuf, dbuf);
10319 temp_hdr = (struct fc_frame_header *)temp_dmabuf->hbuf.virt;
10320 /*
10321 * If the frame's sequence count is greater than the frame on
10322 * the list then insert the frame right after this frame
10323 */
10324 if (new_hdr->fh_seq_cnt > temp_hdr->fh_seq_cnt) {
10325 list_add(&dmabuf->dbuf.list, &temp_dmabuf->dbuf.list);
10326 return seq_dmabuf;
10327 }
10328 }
10329 return NULL;
10330}
10331
10332/**
10333 * lpfc_seq_complete - Indicates if a sequence is complete
10334 * @dmabuf: pointer to a dmabuf that describes the FC sequence
10335 *
10336 * This function checks the sequence, starting with the frame described by
10337 * @dmabuf, to see if all the frames associated with this sequence are present.
10338 * the frames associated with this sequence are linked to the @dmabuf using the
10339 * dbuf list. This function looks for two major things. 1) That the first frame
10340 * has a sequence count of zero. 2) There is a frame with last frame of sequence
10341 * set. 3) That there are no holes in the sequence count. The function will
10342 * return 1 when the sequence is complete, otherwise it will return 0.
10343 **/
10344static int
10345lpfc_seq_complete(struct hbq_dmabuf *dmabuf)
10346{
10347 struct fc_frame_header *hdr;
10348 struct lpfc_dmabuf *d_buf;
10349 struct hbq_dmabuf *seq_dmabuf;
10350 uint32_t fctl;
10351 int seq_count = 0;
10352
10353 hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
10354 /* make sure first fame of sequence has a sequence count of zero */
10355 if (hdr->fh_seq_cnt != seq_count)
10356 return 0;
10357 fctl = (hdr->fh_f_ctl[0] << 16 |
10358 hdr->fh_f_ctl[1] << 8 |
10359 hdr->fh_f_ctl[2]);
10360 /* If last frame of sequence we can return success. */
10361 if (fctl & FC_FC_END_SEQ)
10362 return 1;
10363 list_for_each_entry(d_buf, &dmabuf->dbuf.list, list) {
10364 seq_dmabuf = container_of(d_buf, struct hbq_dmabuf, dbuf);
10365 hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt;
10366 /* If there is a hole in the sequence count then fail. */
10367 if (++seq_count != hdr->fh_seq_cnt)
10368 return 0;
10369 fctl = (hdr->fh_f_ctl[0] << 16 |
10370 hdr->fh_f_ctl[1] << 8 |
10371 hdr->fh_f_ctl[2]);
10372 /* If last frame of sequence we can return success. */
10373 if (fctl & FC_FC_END_SEQ)
10374 return 1;
10375 }
10376 return 0;
10377}
10378
10379/**
10380 * lpfc_prep_seq - Prep sequence for ULP processing
10381 * @vport: Pointer to the vport on which this sequence was received
10382 * @dmabuf: pointer to a dmabuf that describes the FC sequence
10383 *
10384 * This function takes a sequence, described by a list of frames, and creates
10385 * a list of iocbq structures to describe the sequence. This iocbq list will be
10386 * used to issue to the generic unsolicited sequence handler. This routine
10387 * returns a pointer to the first iocbq in the list. If the function is unable
10388 * to allocate an iocbq then it throw out the received frames that were not
10389 * able to be described and return a pointer to the first iocbq. If unable to
10390 * allocate any iocbqs (including the first) this function will return NULL.
10391 **/
10392static struct lpfc_iocbq *
10393lpfc_prep_seq(struct lpfc_vport *vport, struct hbq_dmabuf *seq_dmabuf)
10394{
10395 struct lpfc_dmabuf *d_buf, *n_buf;
10396 struct lpfc_iocbq *first_iocbq, *iocbq;
10397 struct fc_frame_header *fc_hdr;
10398 uint32_t sid;
10399
10400 fc_hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt;
10401 /* remove from receive buffer list */
10402 list_del_init(&seq_dmabuf->hbuf.list);
10403 /* get the Remote Port's SID */
10404 sid = (fc_hdr->fh_s_id[0] << 16 |
10405 fc_hdr->fh_s_id[1] << 8 |
10406 fc_hdr->fh_s_id[2]);
10407 /* Get an iocbq struct to fill in. */
10408 first_iocbq = lpfc_sli_get_iocbq(vport->phba);
10409 if (first_iocbq) {
10410 /* Initialize the first IOCB. */
10411 first_iocbq->iocb.ulpStatus = IOSTAT_SUCCESS;
10412 first_iocbq->iocb.ulpCommand = CMD_IOCB_RCV_SEQ64_CX;
10413 first_iocbq->iocb.ulpContext = be16_to_cpu(fc_hdr->fh_ox_id);
10414 first_iocbq->iocb.unsli3.rcvsli3.vpi =
10415 vport->vpi + vport->phba->vpi_base;
10416 /* put the first buffer into the first IOCBq */
10417 first_iocbq->context2 = &seq_dmabuf->dbuf;
10418 first_iocbq->context3 = NULL;
10419 first_iocbq->iocb.ulpBdeCount = 1;
10420 first_iocbq->iocb.un.cont64[0].tus.f.bdeSize =
10421 LPFC_DATA_BUF_SIZE;
10422 first_iocbq->iocb.un.rcvels.remoteID = sid;
10423 }
10424 iocbq = first_iocbq;
10425 /*
10426 * Each IOCBq can have two Buffers assigned, so go through the list
10427 * of buffers for this sequence and save two buffers in each IOCBq
10428 */
10429 list_for_each_entry_safe(d_buf, n_buf, &seq_dmabuf->dbuf.list, list) {
10430 if (!iocbq) {
10431 lpfc_in_buf_free(vport->phba, d_buf);
10432 continue;
10433 }
10434 if (!iocbq->context3) {
10435 iocbq->context3 = d_buf;
10436 iocbq->iocb.ulpBdeCount++;
10437 iocbq->iocb.unsli3.rcvsli3.bde2.tus.f.bdeSize =
10438 LPFC_DATA_BUF_SIZE;
10439 } else {
10440 iocbq = lpfc_sli_get_iocbq(vport->phba);
10441 if (!iocbq) {
10442 if (first_iocbq) {
10443 first_iocbq->iocb.ulpStatus =
10444 IOSTAT_FCP_RSP_ERROR;
10445 first_iocbq->iocb.un.ulpWord[4] =
10446 IOERR_NO_RESOURCES;
10447 }
10448 lpfc_in_buf_free(vport->phba, d_buf);
10449 continue;
10450 }
10451 iocbq->context2 = d_buf;
10452 iocbq->context3 = NULL;
10453 iocbq->iocb.ulpBdeCount = 1;
10454 iocbq->iocb.un.cont64[0].tus.f.bdeSize =
10455 LPFC_DATA_BUF_SIZE;
10456 iocbq->iocb.un.rcvels.remoteID = sid;
10457 list_add_tail(&iocbq->list, &first_iocbq->list);
10458 }
10459 }
10460 return first_iocbq;
10461}
10462
10463/**
10464 * lpfc_sli4_handle_received_buffer - Handle received buffers from firmware
10465 * @phba: Pointer to HBA context object.
10466 *
10467 * This function is called with no lock held. This function processes all
10468 * the received buffers and gives it to upper layers when a received buffer
10469 * indicates that it is the final frame in the sequence. The interrupt
10470 * service routine processes received buffers at interrupt contexts and adds
10471 * received dma buffers to the rb_pend_list queue and signals the worker thread.
10472 * Worker thread calls lpfc_sli4_handle_received_buffer, which will call the
10473 * appropriate receive function when the final frame in a sequence is received.
10474 **/
10475int
10476lpfc_sli4_handle_received_buffer(struct lpfc_hba *phba)
10477{
10478 LIST_HEAD(cmplq);
10479 struct hbq_dmabuf *dmabuf, *seq_dmabuf;
10480 struct fc_frame_header *fc_hdr;
10481 struct lpfc_vport *vport;
10482 uint32_t fcfi;
10483 struct lpfc_iocbq *iocbq;
10484
10485 /* Clear hba flag and get all received buffers into the cmplq */
10486 spin_lock_irq(&phba->hbalock);
10487 phba->hba_flag &= ~HBA_RECEIVE_BUFFER;
10488 list_splice_init(&phba->rb_pend_list, &cmplq);
10489 spin_unlock_irq(&phba->hbalock);
10490
10491 /* Process each received buffer */
10492 while ((dmabuf = lpfc_sli_hbqbuf_get(&cmplq)) != NULL) {
10493 fc_hdr = (struct fc_frame_header *)dmabuf->hbuf.virt;
10494 /* check to see if this a valid type of frame */
10495 if (lpfc_fc_frame_check(phba, fc_hdr)) {
10496 lpfc_in_buf_free(phba, &dmabuf->dbuf);
10497 continue;
10498 }
10499 fcfi = bf_get(lpfc_rcqe_fcf_id, &dmabuf->rcqe);
10500 vport = lpfc_fc_frame_to_vport(phba, fc_hdr, fcfi);
10501 if (!vport) {
10502 /* throw out the frame */
10503 lpfc_in_buf_free(phba, &dmabuf->dbuf);
10504 continue;
10505 }
10506 /* Link this frame */
10507 seq_dmabuf = lpfc_fc_frame_add(vport, dmabuf);
10508 if (!seq_dmabuf) {
10509 /* unable to add frame to vport - throw it out */
10510 lpfc_in_buf_free(phba, &dmabuf->dbuf);
10511 continue;
10512 }
10513 /* If not last frame in sequence continue processing frames. */
10514 if (!lpfc_seq_complete(seq_dmabuf)) {
10515 /*
10516 * When saving off frames post a new one and mark this
10517 * frame to be freed when it is finished.
10518 **/
10519 lpfc_sli_hbqbuf_fill_hbqs(phba, LPFC_ELS_HBQ, 1);
10520 dmabuf->tag = -1;
10521 continue;
10522 }
10523 fc_hdr = (struct fc_frame_header *)seq_dmabuf->hbuf.virt;
10524 iocbq = lpfc_prep_seq(vport, seq_dmabuf);
10525 if (!lpfc_complete_unsol_iocb(phba,
10526 &phba->sli.ring[LPFC_ELS_RING],
10527 iocbq, fc_hdr->fh_r_ctl,
10528 fc_hdr->fh_type))
10529 lpfc_printf_log(phba, KERN_WARNING, LOG_SLI,
10530 "2540 Ring %d handler: unexpected Rctl "
10531 "x%x Type x%x received\n",
10532 LPFC_ELS_RING,
10533 fc_hdr->fh_r_ctl, fc_hdr->fh_type);
10534 };
10535 return 0;
10536}
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-01 13:02:40 -0500