1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright (c) 2016 - 2018 Cavium Inc.
9 #include "ecore_gtt_reg_addr.h"
10 #include "ecore_hsi_common.h"
12 #include "ecore_sp_api.h"
13 #include "ecore_spq.h"
14 #include "ecore_iro.h"
15 #include "ecore_init_fw_funcs.h"
16 #include "ecore_cxt.h"
17 #include "ecore_int.h"
18 #include "ecore_dev_api.h"
19 #include "ecore_mcp.h"
21 #include "ecore_sriov.h"
23 /***************************************************************************
24 * Structures & Definitions
25 ***************************************************************************/
27 #define SPQ_HIGH_PRI_RESERVE_DEFAULT (1)
29 #define SPQ_BLOCK_DELAY_MAX_ITER (10)
30 #define SPQ_BLOCK_DELAY_US (10)
31 #define SPQ_BLOCK_SLEEP_MAX_ITER (200)
32 #define SPQ_BLOCK_SLEEP_MS (5)
34 /***************************************************************************
35 * Blocking Imp. (BLOCK/EBLOCK mode)
36 ***************************************************************************/
37 static void ecore_spq_blocking_cb(struct ecore_hwfn *p_hwfn, void *cookie,
38 union event_ring_data OSAL_UNUSED * data,
41 struct ecore_spq_comp_done *comp_done;
43 comp_done = (struct ecore_spq_comp_done *)cookie;
45 comp_done->done = 0x1;
46 comp_done->fw_return_code = fw_return_code;
48 /* make update visible to waiting thread */
49 OSAL_SMP_WMB(p_hwfn->p_dev);
52 static enum _ecore_status_t __ecore_spq_block(struct ecore_hwfn *p_hwfn,
53 struct ecore_spq_entry *p_ent,
55 bool sleep_between_iter)
57 struct ecore_spq_comp_done *comp_done;
60 comp_done = (struct ecore_spq_comp_done *)p_ent->comp_cb.cookie;
61 iter_cnt = sleep_between_iter ? p_hwfn->p_spq->block_sleep_max_iter
62 : SPQ_BLOCK_DELAY_MAX_ITER;
64 if (CHIP_REV_IS_EMUL(p_hwfn->p_dev) && sleep_between_iter)
69 OSAL_POLL_MODE_DPC(p_hwfn);
70 OSAL_SMP_RMB(p_hwfn->p_dev);
71 if (comp_done->done == 1) {
73 *p_fw_ret = comp_done->fw_return_code;
77 if (sleep_between_iter)
78 OSAL_MSLEEP(SPQ_BLOCK_SLEEP_MS);
80 OSAL_UDELAY(SPQ_BLOCK_DELAY_US);
86 static enum _ecore_status_t ecore_spq_block(struct ecore_hwfn *p_hwfn,
87 struct ecore_spq_entry *p_ent,
88 u8 *p_fw_ret, bool skip_quick_poll)
90 struct ecore_spq_comp_done *comp_done;
91 struct ecore_ptt *p_ptt;
92 enum _ecore_status_t rc;
94 /* A relatively short polling period w/o sleeping, to allow the FW to
95 * complete the ramrod and thus possibly to avoid the following sleeps.
97 if (!skip_quick_poll) {
98 rc = __ecore_spq_block(p_hwfn, p_ent, p_fw_ret, false);
99 if (rc == ECORE_SUCCESS)
100 return ECORE_SUCCESS;
103 /* Move to polling with a sleeping period between iterations */
104 rc = __ecore_spq_block(p_hwfn, p_ent, p_fw_ret, true);
105 if (rc == ECORE_SUCCESS)
106 return ECORE_SUCCESS;
108 p_ptt = ecore_ptt_acquire(p_hwfn);
112 DP_INFO(p_hwfn, "Ramrod is stuck, requesting MCP drain\n");
113 rc = ecore_mcp_drain(p_hwfn, p_ptt);
114 ecore_ptt_release(p_hwfn, p_ptt);
115 if (rc != ECORE_SUCCESS) {
116 DP_NOTICE(p_hwfn, true, "MCP drain failed\n");
120 /* Retry after drain */
121 rc = __ecore_spq_block(p_hwfn, p_ent, p_fw_ret, true);
122 if (rc == ECORE_SUCCESS)
123 return ECORE_SUCCESS;
125 comp_done = (struct ecore_spq_comp_done *)p_ent->comp_cb.cookie;
126 if (comp_done->done == 1) {
128 *p_fw_ret = comp_done->fw_return_code;
129 return ECORE_SUCCESS;
132 DP_NOTICE(p_hwfn, true,
133 "Ramrod is stuck [CID %08x cmd %02x proto %02x echo %04x]\n",
134 OSAL_LE32_TO_CPU(p_ent->elem.hdr.cid),
135 p_ent->elem.hdr.cmd_id, p_ent->elem.hdr.protocol_id,
136 OSAL_LE16_TO_CPU(p_ent->elem.hdr.echo));
138 ecore_hw_err_notify(p_hwfn, ECORE_HW_ERR_RAMROD_FAIL);
143 void ecore_set_spq_block_timeout(struct ecore_hwfn *p_hwfn,
146 p_hwfn->p_spq->block_sleep_max_iter = spq_timeout_ms ?
147 spq_timeout_ms / SPQ_BLOCK_SLEEP_MS :
148 SPQ_BLOCK_SLEEP_MAX_ITER;
151 /***************************************************************************
152 * SPQ entries inner API
153 ***************************************************************************/
154 static enum _ecore_status_t
155 ecore_spq_fill_entry(struct ecore_hwfn *p_hwfn, struct ecore_spq_entry *p_ent)
159 switch (p_ent->comp_mode) {
160 case ECORE_SPQ_MODE_EBLOCK:
161 case ECORE_SPQ_MODE_BLOCK:
162 p_ent->comp_cb.function = ecore_spq_blocking_cb;
164 case ECORE_SPQ_MODE_CB:
167 DP_NOTICE(p_hwfn, true, "Unknown SPQE completion mode %d\n",
172 DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
173 "Ramrod header: [CID 0x%08x CMD 0x%02x protocol 0x%02x]"
174 " Data pointer: [%08x:%08x] Completion Mode: %s\n",
175 p_ent->elem.hdr.cid, p_ent->elem.hdr.cmd_id,
176 p_ent->elem.hdr.protocol_id,
177 p_ent->elem.data_ptr.hi, p_ent->elem.data_ptr.lo,
178 D_TRINE(p_ent->comp_mode, ECORE_SPQ_MODE_EBLOCK,
179 ECORE_SPQ_MODE_BLOCK, "MODE_EBLOCK", "MODE_BLOCK",
182 return ECORE_SUCCESS;
185 /***************************************************************************
187 ***************************************************************************/
188 static void ecore_spq_hw_initialize(struct ecore_hwfn *p_hwfn,
189 struct ecore_spq *p_spq)
191 struct e4_core_conn_context *p_cxt;
192 struct ecore_cxt_info cxt_info;
194 enum _ecore_status_t rc;
196 cxt_info.iid = p_spq->cid;
198 rc = ecore_cxt_get_cid_info(p_hwfn, &cxt_info);
201 DP_NOTICE(p_hwfn, true, "Cannot find context info for cid=%d\n",
206 p_cxt = cxt_info.p_cxt;
208 /* @@@TBD we zero the context until we have ilt_reset implemented. */
209 OSAL_MEM_ZERO(p_cxt, sizeof(*p_cxt));
211 if (ECORE_IS_BB(p_hwfn->p_dev) || ECORE_IS_AH(p_hwfn->p_dev)) {
212 SET_FIELD(p_cxt->xstorm_ag_context.flags10,
213 E4_XSTORM_CORE_CONN_AG_CTX_DQ_CF_EN, 1);
214 SET_FIELD(p_cxt->xstorm_ag_context.flags1,
215 E4_XSTORM_CORE_CONN_AG_CTX_DQ_CF_ACTIVE, 1);
216 /* SET_FIELD(p_cxt->xstorm_ag_context.flags10,
217 * E4_XSTORM_CORE_CONN_AG_CTX_SLOW_PATH_EN, 1);
219 SET_FIELD(p_cxt->xstorm_ag_context.flags9,
220 E4_XSTORM_CORE_CONN_AG_CTX_CONSOLID_PROD_CF_EN, 1);
223 /* CDU validation - FIXME currently disabled */
225 /* QM physical queue */
226 physical_q = ecore_get_cm_pq_idx(p_hwfn, PQ_FLAGS_LB);
227 p_cxt->xstorm_ag_context.physical_q0 = OSAL_CPU_TO_LE16(physical_q);
229 p_cxt->xstorm_st_context.spq_base_lo =
230 DMA_LO_LE(p_spq->chain.p_phys_addr);
231 p_cxt->xstorm_st_context.spq_base_hi =
232 DMA_HI_LE(p_spq->chain.p_phys_addr);
234 DMA_REGPAIR_LE(p_cxt->xstorm_st_context.consolid_base_addr,
235 p_hwfn->p_consq->chain.p_phys_addr);
238 static enum _ecore_status_t ecore_spq_hw_post(struct ecore_hwfn *p_hwfn,
239 struct ecore_spq *p_spq,
240 struct ecore_spq_entry *p_ent)
242 struct ecore_chain *p_chain = &p_hwfn->p_spq->chain;
243 struct core_db_data *p_db_data = &p_spq->db_data;
244 u16 echo = ecore_chain_get_prod_idx(p_chain);
245 struct slow_path_element *elem;
247 p_ent->elem.hdr.echo = OSAL_CPU_TO_LE16(echo);
248 elem = ecore_chain_produce(p_chain);
250 DP_NOTICE(p_hwfn, true, "Failed to produce from SPQ chain\n");
254 *elem = p_ent->elem; /* Struct assignment */
256 p_db_data->spq_prod =
257 OSAL_CPU_TO_LE16(ecore_chain_get_prod_idx(p_chain));
259 /* Make sure the SPQE is updated before the doorbell */
260 OSAL_WMB(p_hwfn->p_dev);
262 DOORBELL(p_hwfn, p_spq->db_addr_offset, *(u32 *)p_db_data);
264 /* Make sure doorbell is rang */
265 OSAL_WMB(p_hwfn->p_dev);
267 DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
268 "Doorbelled [0x%08x, CID 0x%08x] with Flags: %02x"
269 " agg_params: %02x, prod: %04x\n",
270 p_spq->db_addr_offset, p_spq->cid, p_db_data->params,
271 p_db_data->agg_flags, ecore_chain_get_prod_idx(p_chain));
273 return ECORE_SUCCESS;
276 /***************************************************************************
277 * Asynchronous events
278 ***************************************************************************/
280 static enum _ecore_status_t
281 ecore_async_event_completion(struct ecore_hwfn *p_hwfn,
282 struct event_ring_entry *p_eqe)
284 ecore_spq_async_comp_cb cb;
286 if (!p_hwfn->p_spq || (p_eqe->protocol_id >= MAX_PROTOCOL_TYPE))
289 cb = p_hwfn->p_spq->async_comp_cb[p_eqe->protocol_id];
291 return cb(p_hwfn, p_eqe->opcode, p_eqe->echo,
292 &p_eqe->data, p_eqe->fw_return_code);
295 true, "Unknown Async completion for protocol: %d\n",
302 ecore_spq_register_async_cb(struct ecore_hwfn *p_hwfn,
303 enum protocol_type protocol_id,
304 ecore_spq_async_comp_cb cb)
306 if (!p_hwfn->p_spq || (protocol_id >= MAX_PROTOCOL_TYPE))
309 p_hwfn->p_spq->async_comp_cb[protocol_id] = cb;
310 return ECORE_SUCCESS;
314 ecore_spq_unregister_async_cb(struct ecore_hwfn *p_hwfn,
315 enum protocol_type protocol_id)
317 if (!p_hwfn->p_spq || (protocol_id >= MAX_PROTOCOL_TYPE))
320 p_hwfn->p_spq->async_comp_cb[protocol_id] = OSAL_NULL;
323 /***************************************************************************
325 ***************************************************************************/
326 void ecore_eq_prod_update(struct ecore_hwfn *p_hwfn, u16 prod)
328 u32 addr = GTT_BAR0_MAP_REG_USDM_RAM +
329 USTORM_EQE_CONS_OFFSET(p_hwfn->rel_pf_id);
331 REG_WR16(p_hwfn, addr, prod);
333 /* keep prod updates ordered */
334 OSAL_MMIOWB(p_hwfn->p_dev);
337 enum _ecore_status_t ecore_eq_completion(struct ecore_hwfn *p_hwfn,
340 struct ecore_eq *p_eq = cookie;
341 struct ecore_chain *p_chain = &p_eq->chain;
342 enum _ecore_status_t rc = 0;
344 /* take a snapshot of the FW consumer */
345 u16 fw_cons_idx = OSAL_LE16_TO_CPU(*p_eq->p_fw_cons);
347 DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ, "fw_cons_idx %x\n", fw_cons_idx);
349 /* Need to guarantee the fw_cons index we use points to a usuable
350 * element (to comply with our chain), so our macros would comply
352 if ((fw_cons_idx & ecore_chain_get_usable_per_page(p_chain)) ==
353 ecore_chain_get_usable_per_page(p_chain)) {
354 fw_cons_idx += ecore_chain_get_unusable_per_page(p_chain);
357 /* Complete current segment of eq entries */
358 while (fw_cons_idx != ecore_chain_get_cons_idx(p_chain)) {
359 struct event_ring_entry *p_eqe = ecore_chain_consume(p_chain);
365 DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
366 "op %x prot %x res0 %x echo %x fwret %x flags %x\n",
367 p_eqe->opcode, /* Event Opcode */
368 p_eqe->protocol_id, /* Event Protocol ID */
369 p_eqe->reserved0, /* Reserved */
370 /* Echo value from ramrod data on the host */
371 OSAL_LE16_TO_CPU(p_eqe->echo),
372 p_eqe->fw_return_code, /* FW return code for SP
377 if (GET_FIELD(p_eqe->flags, EVENT_RING_ENTRY_ASYNC)) {
378 if (ecore_async_event_completion(p_hwfn, p_eqe))
380 } else if (ecore_spq_completion(p_hwfn,
382 p_eqe->fw_return_code,
387 ecore_chain_recycle_consumed(p_chain);
390 ecore_eq_prod_update(p_hwfn, ecore_chain_get_prod_idx(p_chain));
395 enum _ecore_status_t ecore_eq_alloc(struct ecore_hwfn *p_hwfn, u16 num_elem)
397 struct ecore_eq *p_eq;
399 /* Allocate EQ struct */
400 p_eq = OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, sizeof(*p_eq));
402 DP_NOTICE(p_hwfn, false,
403 "Failed to allocate `struct ecore_eq'\n");
407 /* Allocate and initialize EQ chain*/
408 if (ecore_chain_alloc(p_hwfn->p_dev,
409 ECORE_CHAIN_USE_TO_PRODUCE,
410 ECORE_CHAIN_MODE_PBL,
411 ECORE_CHAIN_CNT_TYPE_U16,
413 sizeof(union event_ring_element),
414 &p_eq->chain, OSAL_NULL) != ECORE_SUCCESS) {
415 DP_NOTICE(p_hwfn, false, "Failed to allocate eq chain\n");
416 goto eq_allocate_fail;
419 /* register EQ completion on the SP SB */
420 ecore_int_register_cb(p_hwfn, ecore_eq_completion,
421 p_eq, &p_eq->eq_sb_index, &p_eq->p_fw_cons);
424 return ECORE_SUCCESS;
427 OSAL_FREE(p_hwfn->p_dev, p_eq);
431 void ecore_eq_setup(struct ecore_hwfn *p_hwfn)
433 ecore_chain_reset(&p_hwfn->p_eq->chain);
436 void ecore_eq_free(struct ecore_hwfn *p_hwfn)
441 ecore_chain_free(p_hwfn->p_dev, &p_hwfn->p_eq->chain);
443 OSAL_FREE(p_hwfn->p_dev, p_hwfn->p_eq);
444 p_hwfn->p_eq = OSAL_NULL;
447 /***************************************************************************
448 * CQE API - manipulate EQ functionality
449 ***************************************************************************/
450 static enum _ecore_status_t ecore_cqe_completion(struct ecore_hwfn *p_hwfn,
451 struct eth_slow_path_rx_cqe
453 enum protocol_type protocol)
455 if (IS_VF(p_hwfn->p_dev))
456 return OSAL_VF_CQE_COMPLETION(p_hwfn, cqe, protocol);
458 /* @@@tmp - it's possible we'll eventually want to handle some
459 * actual commands that can arrive here, but for now this is only
460 * used to complete the ramrod using the echo value on the cqe
462 return ecore_spq_completion(p_hwfn, cqe->echo, 0, OSAL_NULL);
465 enum _ecore_status_t ecore_eth_cqe_completion(struct ecore_hwfn *p_hwfn,
466 struct eth_slow_path_rx_cqe *cqe)
468 enum _ecore_status_t rc;
470 rc = ecore_cqe_completion(p_hwfn, cqe, PROTOCOLID_ETH);
472 DP_NOTICE(p_hwfn, true,
473 "Failed to handle RXQ CQE [cmd 0x%02x]\n",
480 /***************************************************************************
481 * Slow hwfn Queue (spq)
482 ***************************************************************************/
483 void ecore_spq_setup(struct ecore_hwfn *p_hwfn)
485 struct ecore_spq *p_spq = p_hwfn->p_spq;
486 struct ecore_spq_entry *p_virt = OSAL_NULL;
487 struct core_db_data *p_db_data;
488 void OSAL_IOMEM *db_addr;
489 dma_addr_t p_phys = 0;
491 enum _ecore_status_t rc;
493 OSAL_LIST_INIT(&p_spq->pending);
494 OSAL_LIST_INIT(&p_spq->completion_pending);
495 OSAL_LIST_INIT(&p_spq->free_pool);
496 OSAL_LIST_INIT(&p_spq->unlimited_pending);
497 OSAL_SPIN_LOCK_INIT(&p_spq->lock);
500 p_phys = p_spq->p_phys + OFFSETOF(struct ecore_spq_entry, ramrod);
501 p_virt = p_spq->p_virt;
503 capacity = ecore_chain_get_capacity(&p_spq->chain);
504 for (i = 0; i < capacity; i++) {
505 DMA_REGPAIR_LE(p_virt->elem.data_ptr, p_phys);
507 OSAL_LIST_PUSH_TAIL(&p_virt->list, &p_spq->free_pool);
510 p_phys += sizeof(struct ecore_spq_entry);
514 p_spq->normal_count = 0;
515 p_spq->comp_count = 0;
516 p_spq->comp_sent_count = 0;
517 p_spq->unlimited_pending_count = 0;
519 OSAL_MEM_ZERO(p_spq->p_comp_bitmap,
520 SPQ_COMP_BMAP_SIZE * sizeof(unsigned long));
521 p_spq->comp_bitmap_idx = 0;
523 /* SPQ cid, cannot fail */
524 ecore_cxt_acquire_cid(p_hwfn, PROTOCOLID_CORE, &p_spq->cid);
525 ecore_spq_hw_initialize(p_hwfn, p_spq);
527 /* reset the chain itself */
528 ecore_chain_reset(&p_spq->chain);
530 /* Initialize the address/data of the SPQ doorbell */
531 p_spq->db_addr_offset = DB_ADDR(p_spq->cid, DQ_DEMS_LEGACY);
532 p_db_data = &p_spq->db_data;
533 OSAL_MEM_ZERO(p_db_data, sizeof(*p_db_data));
534 SET_FIELD(p_db_data->params, CORE_DB_DATA_DEST, DB_DEST_XCM);
535 SET_FIELD(p_db_data->params, CORE_DB_DATA_AGG_CMD, DB_AGG_CMD_MAX);
536 SET_FIELD(p_db_data->params, CORE_DB_DATA_AGG_VAL_SEL,
537 DQ_XCM_CORE_SPQ_PROD_CMD);
538 p_db_data->agg_flags = DQ_XCM_CORE_DQ_CF_CMD;
540 /* Register the SPQ doorbell with the doorbell recovery mechanism */
541 db_addr = (void *)((u8 *)p_hwfn->doorbells + p_spq->db_addr_offset);
542 rc = ecore_db_recovery_add(p_hwfn->p_dev, db_addr, &p_spq->db_data,
543 DB_REC_WIDTH_32B, DB_REC_KERNEL);
544 if (rc != ECORE_SUCCESS)
546 "Failed to register the SPQ doorbell with the doorbell recovery mechanism\n");
549 enum _ecore_status_t ecore_spq_alloc(struct ecore_hwfn *p_hwfn)
551 struct ecore_spq_entry *p_virt = OSAL_NULL;
552 struct ecore_spq *p_spq = OSAL_NULL;
553 dma_addr_t p_phys = 0;
558 OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, sizeof(struct ecore_spq));
560 DP_NOTICE(p_hwfn, false, "Failed to allocate `struct ecore_spq'\n");
565 if (ecore_chain_alloc(p_hwfn->p_dev,
566 ECORE_CHAIN_USE_TO_PRODUCE,
567 ECORE_CHAIN_MODE_SINGLE,
568 ECORE_CHAIN_CNT_TYPE_U16,
569 0, /* N/A when the mode is SINGLE */
570 sizeof(struct slow_path_element),
571 &p_spq->chain, OSAL_NULL)) {
572 DP_NOTICE(p_hwfn, false, "Failed to allocate spq chain\n");
573 goto spq_allocate_fail;
576 /* allocate and fill the SPQ elements (incl. ramrod data list) */
577 capacity = ecore_chain_get_capacity(&p_spq->chain);
578 p_virt = OSAL_DMA_ALLOC_COHERENT(p_hwfn->p_dev, &p_phys,
580 sizeof(struct ecore_spq_entry));
582 goto spq_allocate_fail;
584 p_spq->p_virt = p_virt;
585 p_spq->p_phys = p_phys;
587 #ifdef CONFIG_ECORE_LOCK_ALLOC
588 if (OSAL_SPIN_LOCK_ALLOC(p_hwfn, &p_spq->lock))
589 goto spq_allocate_fail;
592 p_hwfn->p_spq = p_spq;
593 return ECORE_SUCCESS;
596 ecore_chain_free(p_hwfn->p_dev, &p_spq->chain);
597 OSAL_FREE(p_hwfn->p_dev, p_spq);
601 void ecore_spq_free(struct ecore_hwfn *p_hwfn)
603 struct ecore_spq *p_spq = p_hwfn->p_spq;
604 void OSAL_IOMEM *db_addr;
610 /* Delete the SPQ doorbell from the doorbell recovery mechanism */
611 db_addr = (void *)((u8 *)p_hwfn->doorbells + p_spq->db_addr_offset);
612 ecore_db_recovery_del(p_hwfn->p_dev, db_addr, &p_spq->db_data);
615 capacity = ecore_chain_get_capacity(&p_spq->chain);
616 OSAL_DMA_FREE_COHERENT(p_hwfn->p_dev,
620 sizeof(struct ecore_spq_entry));
623 ecore_chain_free(p_hwfn->p_dev, &p_spq->chain);
624 #ifdef CONFIG_ECORE_LOCK_ALLOC
625 OSAL_SPIN_LOCK_DEALLOC(&p_spq->lock);
628 OSAL_FREE(p_hwfn->p_dev, p_spq);
632 ecore_spq_get_entry(struct ecore_hwfn *p_hwfn, struct ecore_spq_entry **pp_ent)
634 struct ecore_spq *p_spq = p_hwfn->p_spq;
635 struct ecore_spq_entry *p_ent = OSAL_NULL;
636 enum _ecore_status_t rc = ECORE_SUCCESS;
638 OSAL_SPIN_LOCK(&p_spq->lock);
640 if (OSAL_LIST_IS_EMPTY(&p_spq->free_pool)) {
641 p_ent = OSAL_ZALLOC(p_hwfn->p_dev, GFP_ATOMIC, sizeof(*p_ent));
643 DP_NOTICE(p_hwfn, false, "Failed to allocate an SPQ entry for a pending ramrod\n");
647 p_ent->queue = &p_spq->unlimited_pending;
649 p_ent = OSAL_LIST_FIRST_ENTRY(&p_spq->free_pool,
650 struct ecore_spq_entry, list);
651 OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->free_pool);
652 p_ent->queue = &p_spq->pending;
658 OSAL_SPIN_UNLOCK(&p_spq->lock);
662 /* Locked variant; Should be called while the SPQ lock is taken */
663 static void __ecore_spq_return_entry(struct ecore_hwfn *p_hwfn,
664 struct ecore_spq_entry *p_ent)
666 OSAL_LIST_PUSH_TAIL(&p_ent->list, &p_hwfn->p_spq->free_pool);
669 void ecore_spq_return_entry(struct ecore_hwfn *p_hwfn,
670 struct ecore_spq_entry *p_ent)
672 OSAL_SPIN_LOCK(&p_hwfn->p_spq->lock);
673 __ecore_spq_return_entry(p_hwfn, p_ent);
674 OSAL_SPIN_UNLOCK(&p_hwfn->p_spq->lock);
678 * @brief ecore_spq_add_entry - adds a new entry to the pending
679 * list. Should be used while lock is being held.
681 * Addes an entry to the pending list is there is room (en empty
682 * element is available in the free_pool), or else places the
683 * entry in the unlimited_pending pool.
689 * @return enum _ecore_status_t
691 static enum _ecore_status_t
692 ecore_spq_add_entry(struct ecore_hwfn *p_hwfn,
693 struct ecore_spq_entry *p_ent, enum spq_priority priority)
695 struct ecore_spq *p_spq = p_hwfn->p_spq;
697 if (p_ent->queue == &p_spq->unlimited_pending) {
698 if (OSAL_LIST_IS_EMPTY(&p_spq->free_pool)) {
699 OSAL_LIST_PUSH_TAIL(&p_ent->list,
700 &p_spq->unlimited_pending);
701 p_spq->unlimited_pending_count++;
703 return ECORE_SUCCESS;
706 struct ecore_spq_entry *p_en2;
708 p_en2 = OSAL_LIST_FIRST_ENTRY(&p_spq->free_pool,
709 struct ecore_spq_entry,
711 OSAL_LIST_REMOVE_ENTRY(&p_en2->list, &p_spq->free_pool);
713 /* Copy the ring element physical pointer to the new
714 * entry, since we are about to override the entire ring
715 * entry and don't want to lose the pointer.
717 p_ent->elem.data_ptr = p_en2->elem.data_ptr;
721 /* EBLOCK responsible to free the allocated p_ent */
722 if (p_ent->comp_mode != ECORE_SPQ_MODE_EBLOCK)
723 OSAL_FREE(p_hwfn->p_dev, p_ent);
729 /* entry is to be placed in 'pending' queue */
731 case ECORE_SPQ_PRIORITY_NORMAL:
732 OSAL_LIST_PUSH_TAIL(&p_ent->list, &p_spq->pending);
733 p_spq->normal_count++;
735 case ECORE_SPQ_PRIORITY_HIGH:
736 OSAL_LIST_PUSH_HEAD(&p_ent->list, &p_spq->pending);
743 return ECORE_SUCCESS;
746 /***************************************************************************
748 ***************************************************************************/
750 u32 ecore_spq_get_cid(struct ecore_hwfn *p_hwfn)
753 return 0xffffffff; /* illegal */
754 return p_hwfn->p_spq->cid;
757 /***************************************************************************
758 * Posting new Ramrods
759 ***************************************************************************/
761 static enum _ecore_status_t ecore_spq_post_list(struct ecore_hwfn *p_hwfn,
765 struct ecore_spq *p_spq = p_hwfn->p_spq;
766 enum _ecore_status_t rc;
768 /* TODO - implementation might be wasteful; will always keep room
769 * for an additional high priority ramrod (even if one is already
772 while (ecore_chain_get_elem_left(&p_spq->chain) > keep_reserve &&
773 !OSAL_LIST_IS_EMPTY(head)) {
774 struct ecore_spq_entry *p_ent =
775 OSAL_LIST_FIRST_ENTRY(head, struct ecore_spq_entry, list);
776 if (p_ent != OSAL_NULL) {
778 #pragma warning(suppress : 6011 28182)
780 OSAL_LIST_REMOVE_ENTRY(&p_ent->list, head);
781 OSAL_LIST_PUSH_TAIL(&p_ent->list,
782 &p_spq->completion_pending);
783 p_spq->comp_sent_count++;
785 rc = ecore_spq_hw_post(p_hwfn, p_spq, p_ent);
787 OSAL_LIST_REMOVE_ENTRY(&p_ent->list,
788 &p_spq->completion_pending);
789 __ecore_spq_return_entry(p_hwfn, p_ent);
795 return ECORE_SUCCESS;
798 static enum _ecore_status_t ecore_spq_pend_post(struct ecore_hwfn *p_hwfn)
800 struct ecore_spq *p_spq = p_hwfn->p_spq;
801 struct ecore_spq_entry *p_ent = OSAL_NULL;
803 while (!OSAL_LIST_IS_EMPTY(&p_spq->free_pool)) {
804 if (OSAL_LIST_IS_EMPTY(&p_spq->unlimited_pending))
807 p_ent = OSAL_LIST_FIRST_ENTRY(&p_spq->unlimited_pending,
808 struct ecore_spq_entry, list);
813 #pragma warning(suppress : 6011)
815 OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->unlimited_pending);
817 ecore_spq_add_entry(p_hwfn, p_ent, p_ent->priority);
820 return ecore_spq_post_list(p_hwfn,
821 &p_spq->pending, SPQ_HIGH_PRI_RESERVE_DEFAULT);
824 enum _ecore_status_t ecore_spq_post(struct ecore_hwfn *p_hwfn,
825 struct ecore_spq_entry *p_ent,
828 enum _ecore_status_t rc = ECORE_SUCCESS;
829 struct ecore_spq *p_spq = p_hwfn ? p_hwfn->p_spq : OSAL_NULL;
830 bool b_ret_ent = true;
836 DP_NOTICE(p_hwfn, true, "Got a NULL pointer\n");
840 if (p_hwfn->p_dev->recov_in_prog) {
841 DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
842 "Recovery is in progress -> skip spq post"
843 " [cmd %02x protocol %02x]\n",
844 p_ent->elem.hdr.cmd_id, p_ent->elem.hdr.protocol_id);
845 /* Return success to let the flows to be completed successfully
846 * w/o any error handling.
848 return ECORE_SUCCESS;
851 OSAL_SPIN_LOCK(&p_spq->lock);
853 /* Complete the entry */
854 rc = ecore_spq_fill_entry(p_hwfn, p_ent);
856 /* Check return value after LOCK is taken for cleaner error flow */
860 /* Add the request to the pending queue */
861 rc = ecore_spq_add_entry(p_hwfn, p_ent, p_ent->priority);
865 rc = ecore_spq_pend_post(p_hwfn);
867 /* Since it's possible that pending failed for a different
868 * entry [although unlikely], the failed entry was already
869 * dealt with; No need to return it here.
875 OSAL_SPIN_UNLOCK(&p_spq->lock);
877 if (p_ent->comp_mode == ECORE_SPQ_MODE_EBLOCK) {
878 /* For entries in ECORE BLOCK mode, the completion code cannot
879 * perform the necessary cleanup - if it did, we couldn't
880 * access p_ent here to see whether it's successful or not.
881 * Thus, after gaining the answer perform the cleanup here.
883 rc = ecore_spq_block(p_hwfn, p_ent, fw_return_code,
884 p_ent->queue == &p_spq->unlimited_pending);
886 if (p_ent->queue == &p_spq->unlimited_pending) {
887 /* This is an allocated p_ent which does not need to
890 OSAL_FREE(p_hwfn->p_dev, p_ent);
892 /* TBD: handle error flow and remove p_ent from
902 ecore_spq_return_entry(p_hwfn, p_ent);
907 OSAL_SPIN_LOCK(&p_spq->lock);
908 OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->completion_pending);
909 ecore_chain_return_produced(&p_spq->chain);
912 /* return to the free pool */
914 __ecore_spq_return_entry(p_hwfn, p_ent);
915 OSAL_SPIN_UNLOCK(&p_spq->lock);
920 enum _ecore_status_t ecore_spq_completion(struct ecore_hwfn *p_hwfn,
923 union event_ring_data *p_data)
925 struct ecore_spq *p_spq;
926 struct ecore_spq_entry *p_ent = OSAL_NULL;
927 struct ecore_spq_entry *tmp;
928 struct ecore_spq_entry *found = OSAL_NULL;
929 enum _ecore_status_t rc;
934 p_spq = p_hwfn->p_spq;
938 OSAL_SPIN_LOCK(&p_spq->lock);
939 OSAL_LIST_FOR_EACH_ENTRY_SAFE(p_ent,
941 &p_spq->completion_pending,
942 list, struct ecore_spq_entry) {
943 if (p_ent->elem.hdr.echo == echo) {
944 OSAL_LIST_REMOVE_ENTRY(&p_ent->list,
945 &p_spq->completion_pending);
947 /* Avoid overriding of SPQ entries when getting
948 * out-of-order completions, by marking the completions
949 * in a bitmap and increasing the chain consumer only
950 * for the first successive completed entries.
952 SPQ_COMP_BMAP_SET_BIT(p_spq, echo);
953 while (SPQ_COMP_BMAP_TEST_BIT(p_spq,
954 p_spq->comp_bitmap_idx)) {
955 SPQ_COMP_BMAP_CLEAR_BIT(p_spq,
956 p_spq->comp_bitmap_idx);
957 p_spq->comp_bitmap_idx++;
958 ecore_chain_return_produced(&p_spq->chain);
966 /* This is debug and should be relatively uncommon - depends
967 * on scenarios which have mutliple per-PF sent ramrods.
969 DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
970 "Got completion for echo %04x - doesn't match"
971 " echo %04x in completion pending list\n",
972 OSAL_LE16_TO_CPU(echo),
973 OSAL_LE16_TO_CPU(p_ent->elem.hdr.echo));
976 /* Release lock before callback, as callback may post
977 * an additional ramrod.
979 OSAL_SPIN_UNLOCK(&p_spq->lock);
982 DP_NOTICE(p_hwfn, true,
983 "Failed to find an entry this"
984 " EQE [echo %04x] completes\n",
985 OSAL_LE16_TO_CPU(echo));
989 DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
990 "Complete EQE [echo %04x]: func %p cookie %p)\n",
991 OSAL_LE16_TO_CPU(echo),
992 p_ent->comp_cb.function, p_ent->comp_cb.cookie);
993 if (found->comp_cb.function)
994 found->comp_cb.function(p_hwfn, found->comp_cb.cookie, p_data,
997 DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
998 "Got a completion without a callback function\n");
1000 if ((found->comp_mode != ECORE_SPQ_MODE_EBLOCK) ||
1001 (found->queue == &p_spq->unlimited_pending))
1002 /* EBLOCK is responsible for returning its own entry into the
1003 * free list, unless it originally added the entry into the
1004 * unlimited pending list.
1006 ecore_spq_return_entry(p_hwfn, found);
1008 /* Attempt to post pending requests */
1009 OSAL_SPIN_LOCK(&p_spq->lock);
1010 rc = ecore_spq_pend_post(p_hwfn);
1011 OSAL_SPIN_UNLOCK(&p_spq->lock);
1016 enum _ecore_status_t ecore_consq_alloc(struct ecore_hwfn *p_hwfn)
1018 struct ecore_consq *p_consq;
1020 /* Allocate ConsQ struct */
1022 OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, sizeof(*p_consq));
1024 DP_NOTICE(p_hwfn, false,
1025 "Failed to allocate `struct ecore_consq'\n");
1029 /* Allocate and initialize EQ chain */
1030 if (ecore_chain_alloc(p_hwfn->p_dev,
1031 ECORE_CHAIN_USE_TO_PRODUCE,
1032 ECORE_CHAIN_MODE_PBL,
1033 ECORE_CHAIN_CNT_TYPE_U16,
1034 ECORE_CHAIN_PAGE_SIZE / 0x80,
1036 &p_consq->chain, OSAL_NULL) != ECORE_SUCCESS) {
1037 DP_NOTICE(p_hwfn, false, "Failed to allocate consq chain");
1038 goto consq_allocate_fail;
1041 p_hwfn->p_consq = p_consq;
1042 return ECORE_SUCCESS;
1044 consq_allocate_fail:
1045 OSAL_FREE(p_hwfn->p_dev, p_consq);
1049 void ecore_consq_setup(struct ecore_hwfn *p_hwfn)
1051 ecore_chain_reset(&p_hwfn->p_consq->chain);
1054 void ecore_consq_free(struct ecore_hwfn *p_hwfn)
1056 if (!p_hwfn->p_consq)
1059 ecore_chain_free(p_hwfn->p_dev, &p_hwfn->p_consq->chain);
1060 OSAL_FREE(p_hwfn->p_dev, p_hwfn->p_consq);