1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2001-2019
5 #include "ice_common.h"
8 #define ICE_CQ_INIT_REGS(qinfo, prefix) \
10 (qinfo)->sq.head = prefix##_ATQH; \
11 (qinfo)->sq.tail = prefix##_ATQT; \
12 (qinfo)->sq.len = prefix##_ATQLEN; \
13 (qinfo)->sq.bah = prefix##_ATQBAH; \
14 (qinfo)->sq.bal = prefix##_ATQBAL; \
15 (qinfo)->sq.len_mask = prefix##_ATQLEN_ATQLEN_M; \
16 (qinfo)->sq.len_ena_mask = prefix##_ATQLEN_ATQENABLE_M; \
17 (qinfo)->sq.head_mask = prefix##_ATQH_ATQH_M; \
18 (qinfo)->rq.head = prefix##_ARQH; \
19 (qinfo)->rq.tail = prefix##_ARQT; \
20 (qinfo)->rq.len = prefix##_ARQLEN; \
21 (qinfo)->rq.bah = prefix##_ARQBAH; \
22 (qinfo)->rq.bal = prefix##_ARQBAL; \
23 (qinfo)->rq.len_mask = prefix##_ARQLEN_ARQLEN_M; \
24 (qinfo)->rq.len_ena_mask = prefix##_ARQLEN_ARQENABLE_M; \
25 (qinfo)->rq.head_mask = prefix##_ARQH_ARQH_M; \
29 * ice_adminq_init_regs - Initialize AdminQ registers
30 * @hw: pointer to the hardware structure
32 * This assumes the alloc_sq and alloc_rq functions have already been called
34 static void ice_adminq_init_regs(struct ice_hw *hw)
36 struct ice_ctl_q_info *cq = &hw->adminq;
38 ICE_CQ_INIT_REGS(cq, PF_FW);
42 * ice_mailbox_init_regs - Initialize Mailbox registers
43 * @hw: pointer to the hardware structure
45 * This assumes the alloc_sq and alloc_rq functions have already been called
47 static void ice_mailbox_init_regs(struct ice_hw *hw)
49 struct ice_ctl_q_info *cq = &hw->mailboxq;
51 ICE_CQ_INIT_REGS(cq, PF_MBX);
57 * @hw: pointer to the HW struct
58 * @cq: pointer to the specific Control queue
60 * Returns true if Queue is enabled else false.
62 bool ice_check_sq_alive(struct ice_hw *hw, struct ice_ctl_q_info *cq)
64 /* check both queue-length and queue-enable fields */
65 if (cq->sq.len && cq->sq.len_mask && cq->sq.len_ena_mask)
66 return (rd32(hw, cq->sq.len) & (cq->sq.len_mask |
67 cq->sq.len_ena_mask)) ==
68 (cq->num_sq_entries | cq->sq.len_ena_mask);
74 * ice_alloc_ctrlq_sq_ring - Allocate Control Transmit Queue (ATQ) rings
75 * @hw: pointer to the hardware structure
76 * @cq: pointer to the specific Control queue
78 static enum ice_status
79 ice_alloc_ctrlq_sq_ring(struct ice_hw *hw, struct ice_ctl_q_info *cq)
81 size_t size = cq->num_sq_entries * sizeof(struct ice_aq_desc);
83 cq->sq.desc_buf.va = ice_alloc_dma_mem(hw, &cq->sq.desc_buf, size);
84 if (!cq->sq.desc_buf.va)
85 return ICE_ERR_NO_MEMORY;
87 cq->sq.cmd_buf = ice_calloc(hw, cq->num_sq_entries,
88 sizeof(struct ice_sq_cd));
89 if (!cq->sq.cmd_buf) {
90 ice_free_dma_mem(hw, &cq->sq.desc_buf);
91 return ICE_ERR_NO_MEMORY;
98 * ice_alloc_ctrlq_rq_ring - Allocate Control Receive Queue (ARQ) rings
99 * @hw: pointer to the hardware structure
100 * @cq: pointer to the specific Control queue
102 static enum ice_status
103 ice_alloc_ctrlq_rq_ring(struct ice_hw *hw, struct ice_ctl_q_info *cq)
105 size_t size = cq->num_rq_entries * sizeof(struct ice_aq_desc);
107 cq->rq.desc_buf.va = ice_alloc_dma_mem(hw, &cq->rq.desc_buf, size);
108 if (!cq->rq.desc_buf.va)
109 return ICE_ERR_NO_MEMORY;
114 * ice_free_cq_ring - Free control queue ring
115 * @hw: pointer to the hardware structure
116 * @ring: pointer to the specific control queue ring
118 * This assumes the posted buffers have already been cleaned
121 static void ice_free_cq_ring(struct ice_hw *hw, struct ice_ctl_q_ring *ring)
123 ice_free_dma_mem(hw, &ring->desc_buf);
127 * ice_alloc_rq_bufs - Allocate pre-posted buffers for the ARQ
128 * @hw: pointer to the hardware structure
129 * @cq: pointer to the specific Control queue
131 static enum ice_status
132 ice_alloc_rq_bufs(struct ice_hw *hw, struct ice_ctl_q_info *cq)
136 /* We'll be allocating the buffer info memory first, then we can
137 * allocate the mapped buffers for the event processing
139 cq->rq.dma_head = ice_calloc(hw, cq->num_rq_entries,
140 sizeof(cq->rq.desc_buf));
141 if (!cq->rq.dma_head)
142 return ICE_ERR_NO_MEMORY;
143 cq->rq.r.rq_bi = (struct ice_dma_mem *)cq->rq.dma_head;
145 /* allocate the mapped buffers */
146 for (i = 0; i < cq->num_rq_entries; i++) {
147 struct ice_aq_desc *desc;
148 struct ice_dma_mem *bi;
150 bi = &cq->rq.r.rq_bi[i];
151 bi->va = ice_alloc_dma_mem(hw, bi, cq->rq_buf_size);
153 goto unwind_alloc_rq_bufs;
155 /* now configure the descriptors for use */
156 desc = ICE_CTL_Q_DESC(cq->rq, i);
158 desc->flags = CPU_TO_LE16(ICE_AQ_FLAG_BUF);
159 if (cq->rq_buf_size > ICE_AQ_LG_BUF)
160 desc->flags |= CPU_TO_LE16(ICE_AQ_FLAG_LB);
162 /* This is in accordance with Admin queue design, there is no
163 * register for buffer size configuration
165 desc->datalen = CPU_TO_LE16(bi->size);
167 desc->cookie_high = 0;
168 desc->cookie_low = 0;
169 desc->params.generic.addr_high =
170 CPU_TO_LE32(ICE_HI_DWORD(bi->pa));
171 desc->params.generic.addr_low =
172 CPU_TO_LE32(ICE_LO_DWORD(bi->pa));
173 desc->params.generic.param0 = 0;
174 desc->params.generic.param1 = 0;
178 unwind_alloc_rq_bufs:
179 /* don't try to free the one that failed... */
182 ice_free_dma_mem(hw, &cq->rq.r.rq_bi[i]);
183 ice_free(hw, cq->rq.dma_head);
185 return ICE_ERR_NO_MEMORY;
189 * ice_alloc_sq_bufs - Allocate empty buffer structs for the ATQ
190 * @hw: pointer to the hardware structure
191 * @cq: pointer to the specific Control queue
193 static enum ice_status
194 ice_alloc_sq_bufs(struct ice_hw *hw, struct ice_ctl_q_info *cq)
198 /* No mapped memory needed yet, just the buffer info structures */
199 cq->sq.dma_head = ice_calloc(hw, cq->num_sq_entries,
200 sizeof(cq->sq.desc_buf));
201 if (!cq->sq.dma_head)
202 return ICE_ERR_NO_MEMORY;
203 cq->sq.r.sq_bi = (struct ice_dma_mem *)cq->sq.dma_head;
205 /* allocate the mapped buffers */
206 for (i = 0; i < cq->num_sq_entries; i++) {
207 struct ice_dma_mem *bi;
209 bi = &cq->sq.r.sq_bi[i];
210 bi->va = ice_alloc_dma_mem(hw, bi, cq->sq_buf_size);
212 goto unwind_alloc_sq_bufs;
216 unwind_alloc_sq_bufs:
217 /* don't try to free the one that failed... */
220 ice_free_dma_mem(hw, &cq->sq.r.sq_bi[i]);
221 ice_free(hw, cq->sq.dma_head);
223 return ICE_ERR_NO_MEMORY;
226 static enum ice_status
227 ice_cfg_cq_regs(struct ice_hw *hw, struct ice_ctl_q_ring *ring, u16 num_entries)
229 /* Clear Head and Tail */
230 wr32(hw, ring->head, 0);
231 wr32(hw, ring->tail, 0);
233 /* set starting point */
234 wr32(hw, ring->len, (num_entries | ring->len_ena_mask));
235 wr32(hw, ring->bal, ICE_LO_DWORD(ring->desc_buf.pa));
236 wr32(hw, ring->bah, ICE_HI_DWORD(ring->desc_buf.pa));
238 /* Check one register to verify that config was applied */
239 if (rd32(hw, ring->bal) != ICE_LO_DWORD(ring->desc_buf.pa))
240 return ICE_ERR_AQ_ERROR;
246 * ice_cfg_sq_regs - configure Control ATQ registers
247 * @hw: pointer to the hardware structure
248 * @cq: pointer to the specific Control queue
250 * Configure base address and length registers for the transmit queue
252 static enum ice_status
253 ice_cfg_sq_regs(struct ice_hw *hw, struct ice_ctl_q_info *cq)
255 return ice_cfg_cq_regs(hw, &cq->sq, cq->num_sq_entries);
259 * ice_cfg_rq_regs - configure Control ARQ register
260 * @hw: pointer to the hardware structure
261 * @cq: pointer to the specific Control queue
263 * Configure base address and length registers for the receive (event q)
265 static enum ice_status
266 ice_cfg_rq_regs(struct ice_hw *hw, struct ice_ctl_q_info *cq)
268 enum ice_status status;
270 status = ice_cfg_cq_regs(hw, &cq->rq, cq->num_rq_entries);
274 /* Update tail in the HW to post pre-allocated buffers */
275 wr32(hw, cq->rq.tail, (u32)(cq->num_rq_entries - 1));
281 * ice_init_sq - main initialization routine for Control ATQ
282 * @hw: pointer to the hardware structure
283 * @cq: pointer to the specific Control queue
285 * This is the main initialization routine for the Control Send Queue
286 * Prior to calling this function, drivers *MUST* set the following fields
287 * in the cq->structure:
288 * - cq->num_sq_entries
291 * Do *NOT* hold the lock when calling this as the memory allocation routines
292 * called are not going to be atomic context safe
294 static enum ice_status ice_init_sq(struct ice_hw *hw, struct ice_ctl_q_info *cq)
296 enum ice_status ret_code;
298 if (cq->sq.count > 0) {
299 /* queue already initialized */
300 ret_code = ICE_ERR_NOT_READY;
301 goto init_ctrlq_exit;
304 /* verify input for valid configuration */
305 if (!cq->num_sq_entries || !cq->sq_buf_size) {
306 ret_code = ICE_ERR_CFG;
307 goto init_ctrlq_exit;
310 cq->sq.next_to_use = 0;
311 cq->sq.next_to_clean = 0;
313 /* allocate the ring memory */
314 ret_code = ice_alloc_ctrlq_sq_ring(hw, cq);
316 goto init_ctrlq_exit;
318 /* allocate buffers in the rings */
319 ret_code = ice_alloc_sq_bufs(hw, cq);
321 goto init_ctrlq_free_rings;
323 /* initialize base registers */
324 ret_code = ice_cfg_sq_regs(hw, cq);
326 goto init_ctrlq_free_rings;
329 cq->sq.count = cq->num_sq_entries;
330 goto init_ctrlq_exit;
332 init_ctrlq_free_rings:
333 ice_free_cq_ring(hw, &cq->sq);
340 * ice_init_rq - initialize ARQ
341 * @hw: pointer to the hardware structure
342 * @cq: pointer to the specific Control queue
344 * The main initialization routine for the Admin Receive (Event) Queue.
345 * Prior to calling this function, drivers *MUST* set the following fields
346 * in the cq->structure:
347 * - cq->num_rq_entries
350 * Do *NOT* hold the lock when calling this as the memory allocation routines
351 * called are not going to be atomic context safe
353 static enum ice_status ice_init_rq(struct ice_hw *hw, struct ice_ctl_q_info *cq)
355 enum ice_status ret_code;
357 if (cq->rq.count > 0) {
358 /* queue already initialized */
359 ret_code = ICE_ERR_NOT_READY;
360 goto init_ctrlq_exit;
363 /* verify input for valid configuration */
364 if (!cq->num_rq_entries || !cq->rq_buf_size) {
365 ret_code = ICE_ERR_CFG;
366 goto init_ctrlq_exit;
369 cq->rq.next_to_use = 0;
370 cq->rq.next_to_clean = 0;
372 /* allocate the ring memory */
373 ret_code = ice_alloc_ctrlq_rq_ring(hw, cq);
375 goto init_ctrlq_exit;
377 /* allocate buffers in the rings */
378 ret_code = ice_alloc_rq_bufs(hw, cq);
380 goto init_ctrlq_free_rings;
382 /* initialize base registers */
383 ret_code = ice_cfg_rq_regs(hw, cq);
385 goto init_ctrlq_free_rings;
388 cq->rq.count = cq->num_rq_entries;
389 goto init_ctrlq_exit;
391 init_ctrlq_free_rings:
392 ice_free_cq_ring(hw, &cq->rq);
398 #define ICE_FREE_CQ_BUFS(hw, qi, ring) \
401 /* free descriptors */ \
402 for (i = 0; i < (qi)->num_##ring##_entries; i++) \
403 if ((qi)->ring.r.ring##_bi[i].pa) \
404 ice_free_dma_mem((hw), \
405 &(qi)->ring.r.ring##_bi[i]); \
406 /* free the buffer info list */ \
407 if ((qi)->ring.cmd_buf) \
408 ice_free(hw, (qi)->ring.cmd_buf); \
409 /* free dma head */ \
410 ice_free(hw, (qi)->ring.dma_head); \
414 * ice_shutdown_sq - shutdown the Control ATQ
415 * @hw: pointer to the hardware structure
416 * @cq: pointer to the specific Control queue
418 * The main shutdown routine for the Control Transmit Queue
420 static enum ice_status
421 ice_shutdown_sq(struct ice_hw *hw, struct ice_ctl_q_info *cq)
423 enum ice_status ret_code = ICE_SUCCESS;
425 ice_acquire_lock(&cq->sq_lock);
428 ret_code = ICE_ERR_NOT_READY;
429 goto shutdown_sq_out;
432 /* Stop firmware AdminQ processing */
433 wr32(hw, cq->sq.head, 0);
434 wr32(hw, cq->sq.tail, 0);
435 wr32(hw, cq->sq.len, 0);
436 wr32(hw, cq->sq.bal, 0);
437 wr32(hw, cq->sq.bah, 0);
439 cq->sq.count = 0; /* to indicate uninitialized queue */
441 /* free ring buffers and the ring itself */
442 ICE_FREE_CQ_BUFS(hw, cq, sq);
443 ice_free_cq_ring(hw, &cq->sq);
446 ice_release_lock(&cq->sq_lock);
451 * ice_aq_ver_check - Check the reported AQ API version.
452 * @hw: pointer to the hardware structure
454 * Checks if the driver should load on a given AQ API version.
456 * Return: 'true' iff the driver should attempt to load. 'false' otherwise.
458 static bool ice_aq_ver_check(struct ice_hw *hw)
460 if (hw->api_maj_ver > EXP_FW_API_VER_MAJOR) {
461 /* Major API version is newer than expected, don't load */
462 ice_warn(hw, "The driver for the device stopped because the NVM image is newer than expected. You must install the most recent version of the network driver.\n");
464 } else if (hw->api_maj_ver == EXP_FW_API_VER_MAJOR) {
465 if (hw->api_min_ver > (EXP_FW_API_VER_MINOR + 2))
466 ice_info(hw, "The driver for the device detected a newer version of the NVM image than expected. Please install the most recent version of the network driver.\n");
467 else if ((hw->api_min_ver + 2) < EXP_FW_API_VER_MINOR)
468 ice_info(hw, "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
470 /* Major API version is older than expected, log a warning */
471 ice_info(hw, "The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n");
477 * ice_shutdown_rq - shutdown Control ARQ
478 * @hw: pointer to the hardware structure
479 * @cq: pointer to the specific Control queue
481 * The main shutdown routine for the Control Receive Queue
483 static enum ice_status
484 ice_shutdown_rq(struct ice_hw *hw, struct ice_ctl_q_info *cq)
486 enum ice_status ret_code = ICE_SUCCESS;
488 ice_acquire_lock(&cq->rq_lock);
491 ret_code = ICE_ERR_NOT_READY;
492 goto shutdown_rq_out;
495 /* Stop Control Queue processing */
496 wr32(hw, cq->rq.head, 0);
497 wr32(hw, cq->rq.tail, 0);
498 wr32(hw, cq->rq.len, 0);
499 wr32(hw, cq->rq.bal, 0);
500 wr32(hw, cq->rq.bah, 0);
502 /* set rq.count to 0 to indicate uninitialized queue */
505 /* free ring buffers and the ring itself */
506 ICE_FREE_CQ_BUFS(hw, cq, rq);
507 ice_free_cq_ring(hw, &cq->rq);
510 ice_release_lock(&cq->rq_lock);
516 * ice_init_check_adminq - Check version for Admin Queue to know if its alive
517 * @hw: pointer to the hardware structure
519 static enum ice_status ice_init_check_adminq(struct ice_hw *hw)
521 struct ice_ctl_q_info *cq = &hw->adminq;
522 enum ice_status status;
525 status = ice_aq_get_fw_ver(hw, NULL);
527 goto init_ctrlq_free_rq;
530 if (!ice_aq_ver_check(hw)) {
531 status = ICE_ERR_FW_API_VER;
532 goto init_ctrlq_free_rq;
539 ice_shutdown_rq(hw, cq);
540 ice_destroy_lock(&cq->rq_lock);
543 ice_shutdown_sq(hw, cq);
544 ice_destroy_lock(&cq->sq_lock);
550 * ice_init_ctrlq - main initialization routine for any control Queue
551 * @hw: pointer to the hardware structure
552 * @q_type: specific Control queue type
554 * Prior to calling this function, drivers *MUST* set the following fields
555 * in the cq->structure:
556 * - cq->num_sq_entries
557 * - cq->num_rq_entries
561 static enum ice_status ice_init_ctrlq(struct ice_hw *hw, enum ice_ctl_q q_type)
563 struct ice_ctl_q_info *cq;
564 enum ice_status ret_code;
567 case ICE_CTL_Q_ADMIN:
568 ice_adminq_init_regs(hw);
571 case ICE_CTL_Q_MAILBOX:
572 ice_mailbox_init_regs(hw);
576 return ICE_ERR_PARAM;
580 /* verify input for valid configuration */
581 if (!cq->num_rq_entries || !cq->num_sq_entries ||
582 !cq->rq_buf_size || !cq->sq_buf_size) {
585 ice_init_lock(&cq->sq_lock);
586 ice_init_lock(&cq->rq_lock);
588 /* setup SQ command write back timeout */
589 cq->sq_cmd_timeout = ICE_CTL_Q_SQ_CMD_TIMEOUT;
591 /* allocate the ATQ */
592 ret_code = ice_init_sq(hw, cq);
594 goto init_ctrlq_destroy_locks;
596 /* allocate the ARQ */
597 ret_code = ice_init_rq(hw, cq);
599 goto init_ctrlq_free_sq;
605 ice_shutdown_sq(hw, cq);
606 init_ctrlq_destroy_locks:
607 ice_destroy_lock(&cq->sq_lock);
608 ice_destroy_lock(&cq->rq_lock);
613 * ice_init_all_ctrlq - main initialization routine for all control queues
614 * @hw: pointer to the hardware structure
616 * Prior to calling this function, drivers *MUST* set the following fields
617 * in the cq->structure for all control queues:
618 * - cq->num_sq_entries
619 * - cq->num_rq_entries
623 enum ice_status ice_init_all_ctrlq(struct ice_hw *hw)
625 enum ice_status ret_code;
628 /* Init FW admin queue */
629 ret_code = ice_init_ctrlq(hw, ICE_CTL_Q_ADMIN);
633 ret_code = ice_init_check_adminq(hw);
636 /* Init Mailbox queue */
637 return ice_init_ctrlq(hw, ICE_CTL_Q_MAILBOX);
641 * ice_shutdown_ctrlq - shutdown routine for any control queue
642 * @hw: pointer to the hardware structure
643 * @q_type: specific Control queue type
645 static void ice_shutdown_ctrlq(struct ice_hw *hw, enum ice_ctl_q q_type)
647 struct ice_ctl_q_info *cq;
650 case ICE_CTL_Q_ADMIN:
652 if (ice_check_sq_alive(hw, cq))
653 ice_aq_q_shutdown(hw, true);
655 case ICE_CTL_Q_MAILBOX:
663 ice_shutdown_sq(hw, cq);
664 ice_destroy_lock(&cq->sq_lock);
667 ice_shutdown_rq(hw, cq);
668 ice_destroy_lock(&cq->rq_lock);
673 * ice_shutdown_all_ctrlq - shutdown routine for all control queues
674 * @hw: pointer to the hardware structure
676 void ice_shutdown_all_ctrlq(struct ice_hw *hw)
678 /* Shutdown FW admin queue */
679 ice_shutdown_ctrlq(hw, ICE_CTL_Q_ADMIN);
680 /* Shutdown PF-VF Mailbox */
681 ice_shutdown_ctrlq(hw, ICE_CTL_Q_MAILBOX);
685 * ice_clean_sq - cleans Admin send queue (ATQ)
686 * @hw: pointer to the hardware structure
687 * @cq: pointer to the specific Control queue
689 * returns the number of free desc
691 static u16 ice_clean_sq(struct ice_hw *hw, struct ice_ctl_q_info *cq)
693 struct ice_ctl_q_ring *sq = &cq->sq;
694 u16 ntc = sq->next_to_clean;
695 struct ice_sq_cd *details;
697 struct ice_aq_desc desc_cb;
699 struct ice_aq_desc *desc;
701 desc = ICE_CTL_Q_DESC(*sq, ntc);
702 details = ICE_CTL_Q_DETAILS(*sq, ntc);
704 while (rd32(hw, cq->sq.head) != ntc) {
705 ice_debug(hw, ICE_DBG_AQ_MSG,
706 "ntc %d head %d.\n", ntc, rd32(hw, cq->sq.head));
708 if (details->callback) {
709 ICE_CTL_Q_CALLBACK cb_func =
710 (ICE_CTL_Q_CALLBACK)details->callback;
711 ice_memcpy(&desc_cb, desc, sizeof(desc_cb),
713 cb_func(hw, &desc_cb);
716 ice_memset(desc, 0, sizeof(*desc), ICE_DMA_MEM);
717 ice_memset(details, 0, sizeof(*details), ICE_NONDMA_MEM);
719 if (ntc == sq->count)
721 desc = ICE_CTL_Q_DESC(*sq, ntc);
722 details = ICE_CTL_Q_DETAILS(*sq, ntc);
725 sq->next_to_clean = ntc;
727 return ICE_CTL_Q_DESC_UNUSED(sq);
731 * ice_sq_done - check if FW has processed the Admin Send Queue (ATQ)
732 * @hw: pointer to the HW struct
733 * @cq: pointer to the specific Control queue
735 * Returns true if the firmware has processed all descriptors on the
736 * admin send queue. Returns false if there are still requests pending.
738 static bool ice_sq_done(struct ice_hw *hw, struct ice_ctl_q_info *cq)
740 /* AQ designers suggest use of head for better
741 * timing reliability than DD bit
743 return rd32(hw, cq->sq.head) == cq->sq.next_to_use;
747 * ice_sq_send_cmd - send command to Control Queue (ATQ)
748 * @hw: pointer to the HW struct
749 * @cq: pointer to the specific Control queue
750 * @desc: prefilled descriptor describing the command (non DMA mem)
751 * @buf: buffer to use for indirect commands (or NULL for direct commands)
752 * @buf_size: size of buffer for indirect commands (or 0 for direct commands)
753 * @cd: pointer to command details structure
755 * This is the main send command routine for the ATQ. It runs the queue,
756 * cleans the queue, etc.
759 ice_sq_send_cmd(struct ice_hw *hw, struct ice_ctl_q_info *cq,
760 struct ice_aq_desc *desc, void *buf, u16 buf_size,
761 struct ice_sq_cd *cd)
763 struct ice_dma_mem *dma_buf = NULL;
764 struct ice_aq_desc *desc_on_ring;
765 bool cmd_completed = false;
766 enum ice_status status = ICE_SUCCESS;
767 struct ice_sq_cd *details;
772 /* if reset is in progress return a soft error */
773 if (hw->reset_ongoing)
774 return ICE_ERR_RESET_ONGOING;
775 ice_acquire_lock(&cq->sq_lock);
777 cq->sq_last_status = ICE_AQ_RC_OK;
780 ice_debug(hw, ICE_DBG_AQ_MSG,
781 "Control Send queue not initialized.\n");
782 status = ICE_ERR_AQ_EMPTY;
783 goto sq_send_command_error;
786 if ((buf && !buf_size) || (!buf && buf_size)) {
787 status = ICE_ERR_PARAM;
788 goto sq_send_command_error;
792 if (buf_size > cq->sq_buf_size) {
793 ice_debug(hw, ICE_DBG_AQ_MSG,
794 "Invalid buffer size for Control Send queue: %d.\n",
796 status = ICE_ERR_INVAL_SIZE;
797 goto sq_send_command_error;
800 desc->flags |= CPU_TO_LE16(ICE_AQ_FLAG_BUF);
801 if (buf_size > ICE_AQ_LG_BUF)
802 desc->flags |= CPU_TO_LE16(ICE_AQ_FLAG_LB);
805 val = rd32(hw, cq->sq.head);
806 if (val >= cq->num_sq_entries) {
807 ice_debug(hw, ICE_DBG_AQ_MSG,
808 "head overrun at %d in the Control Send Queue ring\n",
810 status = ICE_ERR_AQ_EMPTY;
811 goto sq_send_command_error;
814 details = ICE_CTL_Q_DETAILS(cq->sq, cq->sq.next_to_use);
818 /* FIXME: if/when this block gets enabled (when the #if 0
819 * is removed), add braces to both branches of the surrounding
820 * conditional expression. The braces have been removed to
821 * prevent checkpatch complaining.
824 /* If the command details are defined copy the cookie. The
825 * CPU_TO_LE32 is not needed here because the data is ignored
826 * by the FW, only used by the driver
828 if (details->cookie) {
830 CPU_TO_LE32(ICE_HI_DWORD(details->cookie));
832 CPU_TO_LE32(ICE_LO_DWORD(details->cookie));
836 ice_memset(details, 0, sizeof(*details), ICE_NONDMA_MEM);
838 /* clear requested flags and then set additional flags if defined */
839 desc->flags &= ~CPU_TO_LE16(details->flags_dis);
840 desc->flags |= CPU_TO_LE16(details->flags_ena);
842 if (details->postpone && !details->async) {
843 ice_debug(hw, ICE_DBG_AQ_MSG,
844 "Async flag not set along with postpone flag\n");
845 status = ICE_ERR_PARAM;
846 goto sq_send_command_error;
850 /* Call clean and check queue available function to reclaim the
851 * descriptors that were processed by FW/MBX; the function returns the
852 * number of desc available. The clean function called here could be
853 * called in a separate thread in case of asynchronous completions.
855 if (ice_clean_sq(hw, cq) == 0) {
856 ice_debug(hw, ICE_DBG_AQ_MSG,
857 "Error: Control Send Queue is full.\n");
858 status = ICE_ERR_AQ_FULL;
859 goto sq_send_command_error;
862 /* initialize the temp desc pointer with the right desc */
863 desc_on_ring = ICE_CTL_Q_DESC(cq->sq, cq->sq.next_to_use);
865 /* if the desc is available copy the temp desc to the right place */
866 ice_memcpy(desc_on_ring, desc, sizeof(*desc_on_ring),
869 /* if buf is not NULL assume indirect command */
871 dma_buf = &cq->sq.r.sq_bi[cq->sq.next_to_use];
872 /* copy the user buf into the respective DMA buf */
873 ice_memcpy(dma_buf->va, buf, buf_size, ICE_NONDMA_TO_DMA);
874 desc_on_ring->datalen = CPU_TO_LE16(buf_size);
876 /* Update the address values in the desc with the pa value
877 * for respective buffer
879 desc_on_ring->params.generic.addr_high =
880 CPU_TO_LE32(ICE_HI_DWORD(dma_buf->pa));
881 desc_on_ring->params.generic.addr_low =
882 CPU_TO_LE32(ICE_LO_DWORD(dma_buf->pa));
885 /* Debug desc and buffer */
886 ice_debug(hw, ICE_DBG_AQ_MSG,
887 "ATQ: Control Send queue desc and buffer:\n");
889 ice_debug_cq(hw, ICE_DBG_AQ_CMD, (void *)desc_on_ring, buf, buf_size);
892 (cq->sq.next_to_use)++;
893 if (cq->sq.next_to_use == cq->sq.count)
894 cq->sq.next_to_use = 0;
896 /* FIXME - handle this case? */
897 if (!details->postpone)
899 wr32(hw, cq->sq.tail, cq->sq.next_to_use);
902 /* if command details are not defined or async flag is not set,
903 * we need to wait for desc write back
905 if (!details->async && !details->postpone) {
906 /* FIXME - handle this case? */
910 if (ice_sq_done(hw, cq))
913 ice_msec_delay(1, false);
915 } while (total_delay < cq->sq_cmd_timeout);
917 /* if ready, copy the desc back to temp */
918 if (ice_sq_done(hw, cq)) {
919 ice_memcpy(desc, desc_on_ring, sizeof(*desc),
922 /* get returned length to copy */
923 u16 copy_size = LE16_TO_CPU(desc->datalen);
925 if (copy_size > buf_size) {
926 ice_debug(hw, ICE_DBG_AQ_MSG,
927 "Return len %d > than buf len %d\n",
928 copy_size, buf_size);
929 status = ICE_ERR_AQ_ERROR;
931 ice_memcpy(buf, dma_buf->va, copy_size,
935 retval = LE16_TO_CPU(desc->retval);
937 ice_debug(hw, ICE_DBG_AQ_MSG,
938 "Control Send Queue command completed with error 0x%x\n",
941 /* strip off FW internal code */
944 cmd_completed = true;
945 if (!status && retval != ICE_AQ_RC_OK)
946 status = ICE_ERR_AQ_ERROR;
947 cq->sq_last_status = (enum ice_aq_err)retval;
950 ice_debug(hw, ICE_DBG_AQ_MSG,
951 "ATQ: desc and buffer writeback:\n");
953 ice_debug_cq(hw, ICE_DBG_AQ_CMD, (void *)desc, buf, buf_size);
956 /* save writeback AQ if requested */
957 if (details->wb_desc)
958 ice_memcpy(details->wb_desc, desc_on_ring,
959 sizeof(*details->wb_desc), ICE_DMA_TO_NONDMA);
961 /* update the error if time out occurred */
962 if (!cmd_completed) {
964 (!details->async && !details->postpone)) {
966 ice_debug(hw, ICE_DBG_AQ_MSG,
967 "Control Send Queue Writeback timeout.\n");
968 status = ICE_ERR_AQ_TIMEOUT;
971 sq_send_command_error:
972 ice_release_lock(&cq->sq_lock);
977 * ice_fill_dflt_direct_cmd_desc - AQ descriptor helper function
978 * @desc: pointer to the temp descriptor (non DMA mem)
979 * @opcode: the opcode can be used to decide which flags to turn off or on
981 * Fill the desc with default values
983 void ice_fill_dflt_direct_cmd_desc(struct ice_aq_desc *desc, u16 opcode)
985 /* zero out the desc */
986 ice_memset(desc, 0, sizeof(*desc), ICE_NONDMA_MEM);
987 desc->opcode = CPU_TO_LE16(opcode);
988 desc->flags = CPU_TO_LE16(ICE_AQ_FLAG_SI);
993 * @hw: pointer to the HW struct
994 * @cq: pointer to the specific Control queue
995 * @e: event info from the receive descriptor, includes any buffers
996 * @pending: number of events that could be left to process
998 * This function cleans one Admin Receive Queue element and returns
999 * the contents through e. It can also return how many events are
1000 * left to process through 'pending'.
1003 ice_clean_rq_elem(struct ice_hw *hw, struct ice_ctl_q_info *cq,
1004 struct ice_rq_event_info *e, u16 *pending)
1006 u16 ntc = cq->rq.next_to_clean;
1007 enum ice_status ret_code = ICE_SUCCESS;
1008 struct ice_aq_desc *desc;
1009 struct ice_dma_mem *bi;
1015 /* pre-clean the event info */
1016 ice_memset(&e->desc, 0, sizeof(e->desc), ICE_NONDMA_MEM);
1018 /* take the lock before we start messing with the ring */
1019 ice_acquire_lock(&cq->rq_lock);
1021 if (!cq->rq.count) {
1022 ice_debug(hw, ICE_DBG_AQ_MSG,
1023 "Control Receive queue not initialized.\n");
1024 ret_code = ICE_ERR_AQ_EMPTY;
1025 goto clean_rq_elem_err;
1028 /* set next_to_use to head */
1029 ntu = (u16)(rd32(hw, cq->rq.head) & cq->rq.head_mask);
1032 /* nothing to do - shouldn't need to update ring's values */
1033 ret_code = ICE_ERR_AQ_NO_WORK;
1034 goto clean_rq_elem_out;
1037 /* now clean the next descriptor */
1038 desc = ICE_CTL_Q_DESC(cq->rq, ntc);
1041 cq->rq_last_status = (enum ice_aq_err)LE16_TO_CPU(desc->retval);
1042 flags = LE16_TO_CPU(desc->flags);
1043 if (flags & ICE_AQ_FLAG_ERR) {
1044 ret_code = ICE_ERR_AQ_ERROR;
1045 ice_debug(hw, ICE_DBG_AQ_MSG,
1046 "Control Receive Queue Event received with error 0x%x\n",
1047 cq->rq_last_status);
1049 ice_memcpy(&e->desc, desc, sizeof(e->desc), ICE_DMA_TO_NONDMA);
1050 datalen = LE16_TO_CPU(desc->datalen);
1051 e->msg_len = min(datalen, e->buf_len);
1052 if (e->msg_buf && e->msg_len)
1053 ice_memcpy(e->msg_buf, cq->rq.r.rq_bi[desc_idx].va,
1054 e->msg_len, ICE_DMA_TO_NONDMA);
1056 ice_debug(hw, ICE_DBG_AQ_MSG, "ARQ: desc and buffer:\n");
1058 ice_debug_cq(hw, ICE_DBG_AQ_CMD, (void *)desc, e->msg_buf,
1062 /* Restore the original datalen and buffer address in the desc,
1063 * FW updates datalen to indicate the event message size
1065 bi = &cq->rq.r.rq_bi[ntc];
1066 ice_memset(desc, 0, sizeof(*desc), ICE_DMA_MEM);
1068 desc->flags = CPU_TO_LE16(ICE_AQ_FLAG_BUF);
1069 if (cq->rq_buf_size > ICE_AQ_LG_BUF)
1070 desc->flags |= CPU_TO_LE16(ICE_AQ_FLAG_LB);
1071 desc->datalen = CPU_TO_LE16(bi->size);
1072 desc->params.generic.addr_high = CPU_TO_LE32(ICE_HI_DWORD(bi->pa));
1073 desc->params.generic.addr_low = CPU_TO_LE32(ICE_LO_DWORD(bi->pa));
1075 /* set tail = the last cleaned desc index. */
1076 wr32(hw, cq->rq.tail, ntc);
1077 /* ntc is updated to tail + 1 */
1079 if (ntc == cq->num_rq_entries)
1081 cq->rq.next_to_clean = ntc;
1082 cq->rq.next_to_use = ntu;
1085 ice_nvmupd_check_wait_event(hw, LE16_TO_CPU(e->desc.opcode));
1088 /* Set pending if needed, unlock and return */
1090 /* re-read HW head to calculate actual pending messages */
1091 ntu = (u16)(rd32(hw, cq->rq.head) & cq->rq.head_mask);
1092 *pending = (u16)((ntc > ntu ? cq->rq.count : 0) + (ntu - ntc));
1095 ice_release_lock(&cq->rq_lock);