2 * Broadcom NetXtreme-E RoCE driver.
4 * Copyright (c) 2016 - 2017, Broadcom. All rights reserved. The term
5 * Broadcom refers to Broadcom Limited and/or its subsidiaries.
7 * This software is available to you under a choice of one of two
8 * licenses. You may choose to be licensed under the terms of the GNU
9 * General Public License (GPL) Version 2, available from the file
10 * COPYING in the main directory of this source tree, or the
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in
21 * the documentation and/or other materials provided with the
24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS''
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
26 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
27 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
28 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
31 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
32 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
33 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
34 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 * Description: RDMA Controller HW interface
38 #include <linux/interrupt.h>
39 #include <linux/spinlock.h>
40 #include <linux/pci.h>
41 #include <linux/prefetch.h>
42 #include <linux/delay.h>
45 #include "qplib_res.h"
46 #include "qplib_rcfw.h"
50 static void bnxt_qplib_service_creq(unsigned long data);
52 /* Hardware communication channel */
53 static int __wait_for_resp(struct bnxt_qplib_rcfw *rcfw, u16 cookie)
58 cbit = cookie % RCFW_MAX_OUTSTANDING_CMD;
59 rc = wait_event_timeout(rcfw->waitq,
60 !test_bit(cbit, rcfw->cmdq_bitmap),
61 msecs_to_jiffies(RCFW_CMD_WAIT_TIME_MS));
62 return rc ? 0 : -ETIMEDOUT;
65 static int __block_for_resp(struct bnxt_qplib_rcfw *rcfw, u16 cookie)
67 u32 count = RCFW_BLOCKED_CMD_WAIT_COUNT;
70 cbit = cookie % RCFW_MAX_OUTSTANDING_CMD;
71 if (!test_bit(cbit, rcfw->cmdq_bitmap))
74 mdelay(1); /* 1m sec */
75 bnxt_qplib_service_creq((unsigned long)rcfw);
76 } while (test_bit(cbit, rcfw->cmdq_bitmap) && --count);
78 return count ? 0 : -ETIMEDOUT;
81 static int __send_message(struct bnxt_qplib_rcfw *rcfw, struct cmdq_base *req,
82 struct creq_base *resp, void *sb, u8 is_block)
84 struct bnxt_qplib_cmdqe *cmdqe, **cmdq_ptr;
85 struct bnxt_qplib_hwq *cmdq = &rcfw->cmdq;
86 struct bnxt_qplib_crsq *crsqe;
87 u32 sw_prod, cmdq_prod;
95 if (!test_bit(FIRMWARE_INITIALIZED_FLAG, &rcfw->flags) &&
96 (opcode != CMDQ_BASE_OPCODE_QUERY_FUNC &&
97 opcode != CMDQ_BASE_OPCODE_INITIALIZE_FW)) {
98 dev_err(&rcfw->pdev->dev,
99 "QPLIB: RCFW not initialized, reject opcode 0x%x",
104 if (test_bit(FIRMWARE_INITIALIZED_FLAG, &rcfw->flags) &&
105 opcode == CMDQ_BASE_OPCODE_INITIALIZE_FW) {
106 dev_err(&rcfw->pdev->dev, "QPLIB: RCFW already initialized!");
110 if (test_bit(FIRMWARE_TIMED_OUT, &rcfw->flags))
113 /* Cmdq are in 16-byte units, each request can consume 1 or more
116 spin_lock_irqsave(&cmdq->lock, flags);
117 if (req->cmd_size >= HWQ_FREE_SLOTS(cmdq)) {
118 dev_err(&rcfw->pdev->dev, "QPLIB: RCFW: CMDQ is full!");
119 spin_unlock_irqrestore(&cmdq->lock, flags);
124 cookie = rcfw->seq_num & RCFW_MAX_COOKIE_VALUE;
125 cbit = cookie % RCFW_MAX_OUTSTANDING_CMD;
127 cookie |= RCFW_CMD_IS_BLOCKING;
129 set_bit(cbit, rcfw->cmdq_bitmap);
130 req->cookie = cpu_to_le16(cookie);
131 crsqe = &rcfw->crsqe_tbl[cbit];
133 spin_unlock_irqrestore(&cmdq->lock, flags);
136 memset(resp, 0, sizeof(*resp));
137 crsqe->resp = (struct creq_qp_event *)resp;
138 crsqe->resp->cookie = req->cookie;
139 crsqe->req_size = req->cmd_size;
140 if (req->resp_size && sb) {
141 struct bnxt_qplib_rcfw_sbuf *sbuf = sb;
143 req->resp_addr = cpu_to_le64(sbuf->dma_addr);
144 req->resp_size = (sbuf->size + BNXT_QPLIB_CMDQE_UNITS - 1) /
145 BNXT_QPLIB_CMDQE_UNITS;
148 cmdq_ptr = (struct bnxt_qplib_cmdqe **)cmdq->pbl_ptr;
150 size = req->cmd_size * BNXT_QPLIB_CMDQE_UNITS;
155 /* Locate the next cmdq slot */
156 sw_prod = HWQ_CMP(cmdq->prod, cmdq);
157 cmdqe = &cmdq_ptr[get_cmdq_pg(sw_prod)][get_cmdq_idx(sw_prod)];
159 dev_err(&rcfw->pdev->dev,
160 "QPLIB: RCFW request failed with no cmdqe!");
163 /* Copy a segment of the req cmd to the cmdq */
164 memset(cmdqe, 0, sizeof(*cmdqe));
165 memcpy(cmdqe, preq, min_t(u32, size, sizeof(*cmdqe)));
166 preq += min_t(u32, size, sizeof(*cmdqe));
167 size -= min_t(u32, size, sizeof(*cmdqe));
174 cmdq_prod = cmdq->prod;
175 if (rcfw->flags & FIRMWARE_FIRST_FLAG) {
176 /* The very first doorbell write
177 * is required to set this flag
178 * which prompts the FW to reset
179 * its internal pointers
181 cmdq_prod |= FIRMWARE_FIRST_FLAG;
182 rcfw->flags &= ~FIRMWARE_FIRST_FLAG;
187 writel(cmdq_prod, rcfw->cmdq_bar_reg_iomem +
188 rcfw->cmdq_bar_reg_prod_off);
189 writel(RCFW_CMDQ_TRIG_VAL, rcfw->cmdq_bar_reg_iomem +
190 rcfw->cmdq_bar_reg_trig_off);
192 spin_unlock_irqrestore(&cmdq->lock, flags);
193 /* Return the CREQ response pointer */
197 int bnxt_qplib_rcfw_send_message(struct bnxt_qplib_rcfw *rcfw,
198 struct cmdq_base *req,
199 struct creq_base *resp,
200 void *sb, u8 is_block)
202 struct creq_qp_event *evnt = (struct creq_qp_event *)resp;
204 u8 opcode, retry_cnt = 0xFF;
208 opcode = req->opcode;
209 rc = __send_message(rcfw, req, resp, sb, is_block);
210 cookie = le16_to_cpu(req->cookie) & RCFW_MAX_COOKIE_VALUE;
214 if (!retry_cnt || (rc != -EAGAIN && rc != -EBUSY)) {
216 dev_err(&rcfw->pdev->dev, "QPLIB: cmdq[%#x]=%#x send failed",
220 is_block ? mdelay(1) : usleep_range(500, 1000);
222 } while (retry_cnt--);
225 rc = __block_for_resp(rcfw, cookie);
227 rc = __wait_for_resp(rcfw, cookie);
230 dev_err(&rcfw->pdev->dev, "QPLIB: cmdq[%#x]=%#x timedout (%d)msec",
231 cookie, opcode, RCFW_CMD_WAIT_TIME_MS);
232 set_bit(FIRMWARE_TIMED_OUT, &rcfw->flags);
237 /* failed with status */
238 dev_err(&rcfw->pdev->dev, "QPLIB: cmdq[%#x]=%#x status %#x",
239 cookie, opcode, evnt->status);
246 static int bnxt_qplib_process_func_event(struct bnxt_qplib_rcfw *rcfw,
247 struct creq_func_event *func_event)
249 switch (func_event->event) {
250 case CREQ_FUNC_EVENT_EVENT_TX_WQE_ERROR:
252 case CREQ_FUNC_EVENT_EVENT_TX_DATA_ERROR:
254 case CREQ_FUNC_EVENT_EVENT_RX_WQE_ERROR:
256 case CREQ_FUNC_EVENT_EVENT_RX_DATA_ERROR:
258 case CREQ_FUNC_EVENT_EVENT_CQ_ERROR:
260 case CREQ_FUNC_EVENT_EVENT_TQM_ERROR:
262 case CREQ_FUNC_EVENT_EVENT_CFCQ_ERROR:
264 case CREQ_FUNC_EVENT_EVENT_CFCS_ERROR:
265 /* SRQ ctx error, call srq_handler??
266 * But there's no SRQ handle!
269 case CREQ_FUNC_EVENT_EVENT_CFCC_ERROR:
271 case CREQ_FUNC_EVENT_EVENT_CFCM_ERROR:
273 case CREQ_FUNC_EVENT_EVENT_TIM_ERROR:
275 case CREQ_FUNC_EVENT_EVENT_VF_COMM_REQUEST:
277 case CREQ_FUNC_EVENT_EVENT_RESOURCE_EXHAUSTED:
285 static int bnxt_qplib_process_qp_event(struct bnxt_qplib_rcfw *rcfw,
286 struct creq_qp_event *qp_event)
288 struct bnxt_qplib_hwq *cmdq = &rcfw->cmdq;
289 struct creq_qp_error_notification *err_event;
290 struct bnxt_qplib_crsq *crsqe;
292 struct bnxt_qplib_qp *qp;
293 u16 cbit, blocked = 0;
298 switch (qp_event->event) {
299 case CREQ_QP_EVENT_EVENT_QP_ERROR_NOTIFICATION:
300 err_event = (struct creq_qp_error_notification *)qp_event;
301 qp_id = le32_to_cpu(err_event->xid);
302 qp = rcfw->qp_tbl[qp_id].qp_handle;
303 dev_dbg(&rcfw->pdev->dev,
304 "QPLIB: Received QP error notification");
305 dev_dbg(&rcfw->pdev->dev,
306 "QPLIB: qpid 0x%x, req_err=0x%x, resp_err=0x%x\n",
307 qp_id, err_event->req_err_state_reason,
308 err_event->res_err_state_reason);
309 bnxt_qplib_acquire_cq_locks(qp, &flags);
310 bnxt_qplib_mark_qp_error(qp);
311 bnxt_qplib_release_cq_locks(qp, &flags);
316 * cmdq->lock needs to be acquired to synchronie
317 * the command send and completion reaping. This function
318 * is always called with creq->lock held. Using
319 * the nested variant of spin_lock.
323 spin_lock_irqsave_nested(&cmdq->lock, flags,
324 SINGLE_DEPTH_NESTING);
325 cookie = le16_to_cpu(qp_event->cookie);
326 mcookie = qp_event->cookie;
327 blocked = cookie & RCFW_CMD_IS_BLOCKING;
328 cookie &= RCFW_MAX_COOKIE_VALUE;
329 cbit = cookie % RCFW_MAX_OUTSTANDING_CMD;
330 crsqe = &rcfw->crsqe_tbl[cbit];
332 crsqe->resp->cookie == mcookie) {
333 memcpy(crsqe->resp, qp_event, sizeof(*qp_event));
336 dev_err(&rcfw->pdev->dev,
337 "QPLIB: CMD %s resp->cookie = %#x, evnt->cookie = %#x",
338 crsqe->resp ? "mismatch" : "collision",
339 crsqe->resp ? crsqe->resp->cookie : 0, mcookie);
341 if (!test_and_clear_bit(cbit, rcfw->cmdq_bitmap))
342 dev_warn(&rcfw->pdev->dev,
343 "QPLIB: CMD bit %d was not requested", cbit);
344 cmdq->cons += crsqe->req_size;
348 wake_up(&rcfw->waitq);
349 spin_unlock_irqrestore(&cmdq->lock, flags);
354 /* SP - CREQ Completion handlers */
355 static void bnxt_qplib_service_creq(unsigned long data)
357 struct bnxt_qplib_rcfw *rcfw = (struct bnxt_qplib_rcfw *)data;
358 struct bnxt_qplib_hwq *creq = &rcfw->creq;
359 struct creq_base *creqe, **creq_ptr;
360 u32 sw_cons, raw_cons;
362 u32 type, budget = CREQ_ENTRY_POLL_BUDGET;
364 /* Service the CREQ until budget is over */
365 spin_lock_irqsave(&creq->lock, flags);
366 raw_cons = creq->cons;
368 sw_cons = HWQ_CMP(raw_cons, creq);
369 creq_ptr = (struct creq_base **)creq->pbl_ptr;
370 creqe = &creq_ptr[get_creq_pg(sw_cons)][get_creq_idx(sw_cons)];
371 if (!CREQ_CMP_VALID(creqe, raw_cons, creq->max_elements))
374 type = creqe->type & CREQ_BASE_TYPE_MASK;
376 case CREQ_BASE_TYPE_QP_EVENT:
377 bnxt_qplib_process_qp_event
378 (rcfw, (struct creq_qp_event *)creqe);
379 rcfw->creq_qp_event_processed++;
381 case CREQ_BASE_TYPE_FUNC_EVENT:
382 if (!bnxt_qplib_process_func_event
383 (rcfw, (struct creq_func_event *)creqe))
384 rcfw->creq_func_event_processed++;
387 (&rcfw->pdev->dev, "QPLIB:aeqe:%#x Not handled",
391 dev_warn(&rcfw->pdev->dev, "QPLIB: creqe with ");
392 dev_warn(&rcfw->pdev->dev,
393 "QPLIB: op_event = 0x%x not handled", type);
400 if (creq->cons != raw_cons) {
401 creq->cons = raw_cons;
402 CREQ_DB_REARM(rcfw->creq_bar_reg_iomem, raw_cons,
405 spin_unlock_irqrestore(&creq->lock, flags);
408 static irqreturn_t bnxt_qplib_creq_irq(int irq, void *dev_instance)
410 struct bnxt_qplib_rcfw *rcfw = dev_instance;
411 struct bnxt_qplib_hwq *creq = &rcfw->creq;
412 struct creq_base **creq_ptr;
415 /* Prefetch the CREQ element */
416 sw_cons = HWQ_CMP(creq->cons, creq);
417 creq_ptr = (struct creq_base **)rcfw->creq.pbl_ptr;
418 prefetch(&creq_ptr[get_creq_pg(sw_cons)][get_creq_idx(sw_cons)]);
420 tasklet_schedule(&rcfw->worker);
426 int bnxt_qplib_deinit_rcfw(struct bnxt_qplib_rcfw *rcfw)
428 struct cmdq_deinitialize_fw req;
429 struct creq_deinitialize_fw_resp resp;
433 RCFW_CMD_PREP(req, DEINITIALIZE_FW, cmd_flags);
434 rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, (void *)&resp,
439 clear_bit(FIRMWARE_INITIALIZED_FLAG, &rcfw->flags);
443 static int __get_pbl_pg_idx(struct bnxt_qplib_pbl *pbl)
445 return (pbl->pg_size == ROCE_PG_SIZE_4K ?
446 CMDQ_INITIALIZE_FW_QPC_PG_SIZE_PG_4K :
447 pbl->pg_size == ROCE_PG_SIZE_8K ?
448 CMDQ_INITIALIZE_FW_QPC_PG_SIZE_PG_8K :
449 pbl->pg_size == ROCE_PG_SIZE_64K ?
450 CMDQ_INITIALIZE_FW_QPC_PG_SIZE_PG_64K :
451 pbl->pg_size == ROCE_PG_SIZE_2M ?
452 CMDQ_INITIALIZE_FW_QPC_PG_SIZE_PG_2M :
453 pbl->pg_size == ROCE_PG_SIZE_8M ?
454 CMDQ_INITIALIZE_FW_QPC_PG_SIZE_PG_8M :
455 pbl->pg_size == ROCE_PG_SIZE_1G ?
456 CMDQ_INITIALIZE_FW_QPC_PG_SIZE_PG_1G :
457 CMDQ_INITIALIZE_FW_QPC_PG_SIZE_PG_4K);
460 int bnxt_qplib_init_rcfw(struct bnxt_qplib_rcfw *rcfw,
461 struct bnxt_qplib_ctx *ctx, int is_virtfn)
463 struct cmdq_initialize_fw req;
464 struct creq_initialize_fw_resp resp;
465 u16 cmd_flags = 0, level;
468 RCFW_CMD_PREP(req, INITIALIZE_FW, cmd_flags);
469 /* Supply (log-base-2-of-host-page-size - base-page-shift)
470 * to bono to adjust the doorbell page sizes.
472 req.log2_dbr_pg_size = cpu_to_le16(PAGE_SHIFT -
473 RCFW_DBR_BASE_PAGE_SHIFT);
475 * VFs need not setup the HW context area, PF
476 * shall setup this area for VF. Skipping the
482 level = ctx->qpc_tbl.level;
483 req.qpc_pg_size_qpc_lvl = (level << CMDQ_INITIALIZE_FW_QPC_LVL_SFT) |
484 __get_pbl_pg_idx(&ctx->qpc_tbl.pbl[level]);
485 level = ctx->mrw_tbl.level;
486 req.mrw_pg_size_mrw_lvl = (level << CMDQ_INITIALIZE_FW_MRW_LVL_SFT) |
487 __get_pbl_pg_idx(&ctx->mrw_tbl.pbl[level]);
488 level = ctx->srqc_tbl.level;
489 req.srq_pg_size_srq_lvl = (level << CMDQ_INITIALIZE_FW_SRQ_LVL_SFT) |
490 __get_pbl_pg_idx(&ctx->srqc_tbl.pbl[level]);
491 level = ctx->cq_tbl.level;
492 req.cq_pg_size_cq_lvl = (level << CMDQ_INITIALIZE_FW_CQ_LVL_SFT) |
493 __get_pbl_pg_idx(&ctx->cq_tbl.pbl[level]);
494 level = ctx->srqc_tbl.level;
495 req.srq_pg_size_srq_lvl = (level << CMDQ_INITIALIZE_FW_SRQ_LVL_SFT) |
496 __get_pbl_pg_idx(&ctx->srqc_tbl.pbl[level]);
497 level = ctx->cq_tbl.level;
498 req.cq_pg_size_cq_lvl = (level << CMDQ_INITIALIZE_FW_CQ_LVL_SFT) |
499 __get_pbl_pg_idx(&ctx->cq_tbl.pbl[level]);
500 level = ctx->tim_tbl.level;
501 req.tim_pg_size_tim_lvl = (level << CMDQ_INITIALIZE_FW_TIM_LVL_SFT) |
502 __get_pbl_pg_idx(&ctx->tim_tbl.pbl[level]);
503 level = ctx->tqm_pde_level;
504 req.tqm_pg_size_tqm_lvl = (level << CMDQ_INITIALIZE_FW_TQM_LVL_SFT) |
505 __get_pbl_pg_idx(&ctx->tqm_pde.pbl[level]);
508 cpu_to_le64(ctx->qpc_tbl.pbl[PBL_LVL_0].pg_map_arr[0]);
510 cpu_to_le64(ctx->mrw_tbl.pbl[PBL_LVL_0].pg_map_arr[0]);
512 cpu_to_le64(ctx->srqc_tbl.pbl[PBL_LVL_0].pg_map_arr[0]);
514 cpu_to_le64(ctx->cq_tbl.pbl[PBL_LVL_0].pg_map_arr[0]);
516 cpu_to_le64(ctx->tim_tbl.pbl[PBL_LVL_0].pg_map_arr[0]);
518 cpu_to_le64(ctx->tqm_pde.pbl[PBL_LVL_0].pg_map_arr[0]);
520 req.number_of_qp = cpu_to_le32(ctx->qpc_tbl.max_elements);
521 req.number_of_mrw = cpu_to_le32(ctx->mrw_tbl.max_elements);
522 req.number_of_srq = cpu_to_le32(ctx->srqc_tbl.max_elements);
523 req.number_of_cq = cpu_to_le32(ctx->cq_tbl.max_elements);
525 req.max_qp_per_vf = cpu_to_le32(ctx->vf_res.max_qp_per_vf);
526 req.max_mrw_per_vf = cpu_to_le32(ctx->vf_res.max_mrw_per_vf);
527 req.max_srq_per_vf = cpu_to_le32(ctx->vf_res.max_srq_per_vf);
528 req.max_cq_per_vf = cpu_to_le32(ctx->vf_res.max_cq_per_vf);
529 req.max_gid_per_vf = cpu_to_le32(ctx->vf_res.max_gid_per_vf);
532 req.stat_ctx_id = cpu_to_le32(ctx->stats.fw_id);
533 rc = bnxt_qplib_rcfw_send_message(rcfw, (void *)&req, (void *)&resp,
537 set_bit(FIRMWARE_INITIALIZED_FLAG, &rcfw->flags);
541 void bnxt_qplib_free_rcfw_channel(struct bnxt_qplib_rcfw *rcfw)
544 kfree(rcfw->crsqe_tbl);
545 bnxt_qplib_free_hwq(rcfw->pdev, &rcfw->cmdq);
546 bnxt_qplib_free_hwq(rcfw->pdev, &rcfw->creq);
550 int bnxt_qplib_alloc_rcfw_channel(struct pci_dev *pdev,
551 struct bnxt_qplib_rcfw *rcfw,
555 rcfw->creq.max_elements = BNXT_QPLIB_CREQE_MAX_CNT;
556 if (bnxt_qplib_alloc_init_hwq(rcfw->pdev, &rcfw->creq, NULL, 0,
557 &rcfw->creq.max_elements,
558 BNXT_QPLIB_CREQE_UNITS, 0, PAGE_SIZE,
560 dev_err(&rcfw->pdev->dev,
561 "QPLIB: HW channel CREQ allocation failed");
564 rcfw->cmdq.max_elements = BNXT_QPLIB_CMDQE_MAX_CNT;
565 if (bnxt_qplib_alloc_init_hwq(rcfw->pdev, &rcfw->cmdq, NULL, 0,
566 &rcfw->cmdq.max_elements,
567 BNXT_QPLIB_CMDQE_UNITS, 0, PAGE_SIZE,
569 dev_err(&rcfw->pdev->dev,
570 "QPLIB: HW channel CMDQ allocation failed");
574 rcfw->crsqe_tbl = kcalloc(rcfw->cmdq.max_elements,
575 sizeof(*rcfw->crsqe_tbl), GFP_KERNEL);
576 if (!rcfw->crsqe_tbl)
579 rcfw->qp_tbl_size = qp_tbl_sz;
580 rcfw->qp_tbl = kcalloc(qp_tbl_sz, sizeof(struct bnxt_qplib_qp_node),
588 bnxt_qplib_free_rcfw_channel(rcfw);
592 void bnxt_qplib_disable_rcfw_channel(struct bnxt_qplib_rcfw *rcfw)
596 /* Make sure the HW channel is stopped! */
597 synchronize_irq(rcfw->vector);
598 tasklet_disable(&rcfw->worker);
599 tasklet_kill(&rcfw->worker);
601 if (rcfw->requested) {
602 free_irq(rcfw->vector, rcfw);
603 rcfw->requested = false;
605 if (rcfw->cmdq_bar_reg_iomem)
606 iounmap(rcfw->cmdq_bar_reg_iomem);
607 rcfw->cmdq_bar_reg_iomem = NULL;
609 if (rcfw->creq_bar_reg_iomem)
610 iounmap(rcfw->creq_bar_reg_iomem);
611 rcfw->creq_bar_reg_iomem = NULL;
613 indx = find_first_bit(rcfw->cmdq_bitmap, rcfw->bmap_size);
614 if (indx != rcfw->bmap_size)
615 dev_err(&rcfw->pdev->dev,
616 "QPLIB: disabling RCFW with pending cmd-bit %lx", indx);
617 kfree(rcfw->cmdq_bitmap);
620 rcfw->aeq_handler = NULL;
624 int bnxt_qplib_enable_rcfw_channel(struct pci_dev *pdev,
625 struct bnxt_qplib_rcfw *rcfw,
627 int cp_bar_reg_off, int virt_fn,
628 int (*aeq_handler)(struct bnxt_qplib_rcfw *,
629 struct creq_func_event *))
631 resource_size_t res_base;
632 struct cmdq_init init;
638 rcfw->flags = FIRMWARE_FIRST_FLAG;
639 bmap_size = BITS_TO_LONGS(RCFW_MAX_OUTSTANDING_CMD *
640 sizeof(unsigned long));
641 rcfw->cmdq_bitmap = kzalloc(bmap_size, GFP_KERNEL);
642 if (!rcfw->cmdq_bitmap)
644 rcfw->bmap_size = bmap_size;
647 rcfw->cmdq_bar_reg = RCFW_COMM_PCI_BAR_REGION;
648 res_base = pci_resource_start(pdev, rcfw->cmdq_bar_reg);
652 rcfw->cmdq_bar_reg_iomem = ioremap_nocache(res_base +
653 RCFW_COMM_BASE_OFFSET,
655 if (!rcfw->cmdq_bar_reg_iomem) {
656 dev_err(&rcfw->pdev->dev,
657 "QPLIB: CMDQ BAR region %d mapping failed",
662 rcfw->cmdq_bar_reg_prod_off = virt_fn ? RCFW_VF_COMM_PROD_OFFSET :
663 RCFW_PF_COMM_PROD_OFFSET;
665 rcfw->cmdq_bar_reg_trig_off = RCFW_COMM_TRIG_OFFSET;
668 rcfw->creq_bar_reg = RCFW_COMM_CONS_PCI_BAR_REGION;
669 res_base = pci_resource_start(pdev, rcfw->creq_bar_reg);
671 dev_err(&rcfw->pdev->dev,
672 "QPLIB: CREQ BAR region %d resc start is 0!",
674 rcfw->creq_bar_reg_iomem = ioremap_nocache(res_base + cp_bar_reg_off,
676 if (!rcfw->creq_bar_reg_iomem) {
677 dev_err(&rcfw->pdev->dev,
678 "QPLIB: CREQ BAR region %d mapping failed",
682 rcfw->creq_qp_event_processed = 0;
683 rcfw->creq_func_event_processed = 0;
685 rcfw->vector = msix_vector;
687 rcfw->aeq_handler = aeq_handler;
689 tasklet_init(&rcfw->worker, bnxt_qplib_service_creq,
690 (unsigned long)rcfw);
692 rcfw->requested = false;
693 rc = request_irq(rcfw->vector, bnxt_qplib_creq_irq, 0,
694 "bnxt_qplib_creq", rcfw);
696 dev_err(&rcfw->pdev->dev,
697 "QPLIB: Failed to request IRQ for CREQ rc = 0x%x", rc);
698 bnxt_qplib_disable_rcfw_channel(rcfw);
701 rcfw->requested = true;
703 init_waitqueue_head(&rcfw->waitq);
705 CREQ_DB_REARM(rcfw->creq_bar_reg_iomem, 0, rcfw->creq.max_elements);
707 init.cmdq_pbl = cpu_to_le64(rcfw->cmdq.pbl[PBL_LVL_0].pg_map_arr[0]);
708 init.cmdq_size_cmdq_lvl = cpu_to_le16(
709 ((BNXT_QPLIB_CMDQE_MAX_CNT << CMDQ_INIT_CMDQ_SIZE_SFT) &
710 CMDQ_INIT_CMDQ_SIZE_MASK) |
711 ((rcfw->cmdq.level << CMDQ_INIT_CMDQ_LVL_SFT) &
712 CMDQ_INIT_CMDQ_LVL_MASK));
713 init.creq_ring_id = cpu_to_le16(rcfw->creq_ring_id);
715 /* Write to the Bono mailbox register */
716 __iowrite32_copy(rcfw->cmdq_bar_reg_iomem, &init, sizeof(init) / 4);
720 struct bnxt_qplib_rcfw_sbuf *bnxt_qplib_rcfw_alloc_sbuf(
721 struct bnxt_qplib_rcfw *rcfw,
724 struct bnxt_qplib_rcfw_sbuf *sbuf;
726 sbuf = kzalloc(sizeof(*sbuf), GFP_ATOMIC);
731 sbuf->sb = dma_zalloc_coherent(&rcfw->pdev->dev, sbuf->size,
732 &sbuf->dma_addr, GFP_ATOMIC);
742 void bnxt_qplib_rcfw_free_sbuf(struct bnxt_qplib_rcfw *rcfw,
743 struct bnxt_qplib_rcfw_sbuf *sbuf)
746 dma_free_coherent(&rcfw->pdev->dev, sbuf->size,
747 sbuf->sb, sbuf->dma_addr);