2 * Copyright (c) 2016 QLogic Corporation.
6 * See LICENSE.qede_pmd for copyright and licensing details.
11 #include "ecore_gtt_reg_addr.h"
12 #include "ecore_hsi_common.h"
14 #include "ecore_sp_api.h"
15 #include "ecore_spq.h"
16 #include "ecore_iro.h"
17 #include "ecore_init_fw_funcs.h"
18 #include "ecore_cxt.h"
19 #include "ecore_int.h"
20 #include "ecore_dev_api.h"
21 #include "ecore_mcp.h"
23 #include "ecore_sriov.h"
25 /***************************************************************************
26 * Structures & Definitions
27 ***************************************************************************/
29 #define SPQ_HIGH_PRI_RESERVE_DEFAULT (1)
31 #define SPQ_BLOCK_DELAY_MAX_ITER (10)
32 #define SPQ_BLOCK_DELAY_US (10)
33 #define SPQ_BLOCK_SLEEP_MAX_ITER (1000)
34 #define SPQ_BLOCK_SLEEP_MS (5)
36 /***************************************************************************
37 * Blocking Imp. (BLOCK/EBLOCK mode)
38 ***************************************************************************/
39 static void ecore_spq_blocking_cb(struct ecore_hwfn *p_hwfn, void *cookie,
40 union event_ring_data OSAL_UNUSED * data,
43 struct ecore_spq_comp_done *comp_done;
45 comp_done = (struct ecore_spq_comp_done *)cookie;
47 comp_done->done = 0x1;
48 comp_done->fw_return_code = fw_return_code;
50 /* make update visible to waiting thread */
51 OSAL_SMP_WMB(p_hwfn->p_dev);
54 static enum _ecore_status_t __ecore_spq_block(struct ecore_hwfn *p_hwfn,
55 struct ecore_spq_entry *p_ent,
57 bool sleep_between_iter)
59 struct ecore_spq_comp_done *comp_done;
62 comp_done = (struct ecore_spq_comp_done *)p_ent->comp_cb.cookie;
63 iter_cnt = sleep_between_iter ? SPQ_BLOCK_SLEEP_MAX_ITER
64 : SPQ_BLOCK_DELAY_MAX_ITER;
67 OSAL_POLL_MODE_DPC(p_hwfn);
68 OSAL_SMP_RMB(p_hwfn->p_dev);
69 if (comp_done->done == 1) {
71 *p_fw_ret = comp_done->fw_return_code;
75 if (sleep_between_iter)
76 OSAL_MSLEEP(SPQ_BLOCK_SLEEP_MS);
78 OSAL_UDELAY(SPQ_BLOCK_DELAY_US);
84 static enum _ecore_status_t ecore_spq_block(struct ecore_hwfn *p_hwfn,
85 struct ecore_spq_entry *p_ent,
86 u8 *p_fw_ret, bool skip_quick_poll)
88 struct ecore_spq_comp_done *comp_done;
89 struct ecore_ptt *p_ptt;
90 enum _ecore_status_t rc;
92 /* A relatively short polling period w/o sleeping, to allow the FW to
93 * complete the ramrod and thus possibly to avoid the following sleeps.
95 if (!skip_quick_poll) {
96 rc = __ecore_spq_block(p_hwfn, p_ent, p_fw_ret, false);
97 if (rc == ECORE_SUCCESS)
101 /* Move to polling with a sleeping period between iterations */
102 rc = __ecore_spq_block(p_hwfn, p_ent, p_fw_ret, true);
103 if (rc == ECORE_SUCCESS)
104 return ECORE_SUCCESS;
106 p_ptt = ecore_ptt_acquire(p_hwfn);
110 DP_INFO(p_hwfn, "Ramrod is stuck, requesting MCP drain\n");
111 rc = ecore_mcp_drain(p_hwfn, p_ptt);
112 ecore_ptt_release(p_hwfn, p_ptt);
113 if (rc != ECORE_SUCCESS) {
114 DP_NOTICE(p_hwfn, true, "MCP drain failed\n");
118 /* Retry after drain */
119 rc = __ecore_spq_block(p_hwfn, p_ent, p_fw_ret, true);
120 if (rc == ECORE_SUCCESS)
121 return ECORE_SUCCESS;
123 comp_done = (struct ecore_spq_comp_done *)p_ent->comp_cb.cookie;
124 if (comp_done->done == 1) {
126 *p_fw_ret = comp_done->fw_return_code;
127 return ECORE_SUCCESS;
130 DP_NOTICE(p_hwfn, true,
131 "Ramrod is stuck [CID %08x cmd %02x proto %02x echo %04x]\n",
132 OSAL_LE32_TO_CPU(p_ent->elem.hdr.cid),
133 p_ent->elem.hdr.cmd_id, p_ent->elem.hdr.protocol_id,
134 OSAL_LE16_TO_CPU(p_ent->elem.hdr.echo));
136 ecore_hw_err_notify(p_hwfn, ECORE_HW_ERR_RAMROD_FAIL);
141 /***************************************************************************
142 * SPQ entries inner API
143 ***************************************************************************/
144 static enum _ecore_status_t
145 ecore_spq_fill_entry(struct ecore_hwfn *p_hwfn, struct ecore_spq_entry *p_ent)
149 switch (p_ent->comp_mode) {
150 case ECORE_SPQ_MODE_EBLOCK:
151 case ECORE_SPQ_MODE_BLOCK:
152 p_ent->comp_cb.function = ecore_spq_blocking_cb;
154 case ECORE_SPQ_MODE_CB:
157 DP_NOTICE(p_hwfn, true, "Unknown SPQE completion mode %d\n",
162 DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
163 "Ramrod header: [CID 0x%08x CMD 0x%02x protocol 0x%02x]"
164 " Data pointer: [%08x:%08x] Completion Mode: %s\n",
165 p_ent->elem.hdr.cid, p_ent->elem.hdr.cmd_id,
166 p_ent->elem.hdr.protocol_id,
167 p_ent->elem.data_ptr.hi, p_ent->elem.data_ptr.lo,
168 D_TRINE(p_ent->comp_mode, ECORE_SPQ_MODE_EBLOCK,
169 ECORE_SPQ_MODE_BLOCK, "MODE_EBLOCK", "MODE_BLOCK",
172 return ECORE_SUCCESS;
175 /***************************************************************************
177 ***************************************************************************/
178 static void ecore_spq_hw_initialize(struct ecore_hwfn *p_hwfn,
179 struct ecore_spq *p_spq)
181 struct e4_core_conn_context *p_cxt;
182 struct ecore_cxt_info cxt_info;
184 enum _ecore_status_t rc;
186 cxt_info.iid = p_spq->cid;
188 rc = ecore_cxt_get_cid_info(p_hwfn, &cxt_info);
191 DP_NOTICE(p_hwfn, true, "Cannot find context info for cid=%d\n",
196 p_cxt = cxt_info.p_cxt;
198 /* @@@TBD we zero the context until we have ilt_reset implemented. */
199 OSAL_MEM_ZERO(p_cxt, sizeof(*p_cxt));
201 if (ECORE_IS_BB(p_hwfn->p_dev) || ECORE_IS_AH(p_hwfn->p_dev)) {
202 SET_FIELD(p_cxt->xstorm_ag_context.flags10,
203 E4_XSTORM_CORE_CONN_AG_CTX_DQ_CF_EN, 1);
204 SET_FIELD(p_cxt->xstorm_ag_context.flags1,
205 E4_XSTORM_CORE_CONN_AG_CTX_DQ_CF_ACTIVE, 1);
206 /* SET_FIELD(p_cxt->xstorm_ag_context.flags10,
207 * E4_XSTORM_CORE_CONN_AG_CTX_SLOW_PATH_EN, 1);
209 SET_FIELD(p_cxt->xstorm_ag_context.flags9,
210 E4_XSTORM_CORE_CONN_AG_CTX_CONSOLID_PROD_CF_EN, 1);
213 /* CDU validation - FIXME currently disabled */
215 /* QM physical queue */
216 physical_q = ecore_get_cm_pq_idx(p_hwfn, PQ_FLAGS_LB);
217 p_cxt->xstorm_ag_context.physical_q0 = OSAL_CPU_TO_LE16(physical_q);
219 p_cxt->xstorm_st_context.spq_base_lo =
220 DMA_LO_LE(p_spq->chain.p_phys_addr);
221 p_cxt->xstorm_st_context.spq_base_hi =
222 DMA_HI_LE(p_spq->chain.p_phys_addr);
224 DMA_REGPAIR_LE(p_cxt->xstorm_st_context.consolid_base_addr,
225 p_hwfn->p_consq->chain.p_phys_addr);
228 static enum _ecore_status_t ecore_spq_hw_post(struct ecore_hwfn *p_hwfn,
229 struct ecore_spq *p_spq,
230 struct ecore_spq_entry *p_ent)
232 struct ecore_chain *p_chain = &p_hwfn->p_spq->chain;
233 struct core_db_data *p_db_data = &p_spq->db_data;
234 u16 echo = ecore_chain_get_prod_idx(p_chain);
235 struct slow_path_element *elem;
237 p_ent->elem.hdr.echo = OSAL_CPU_TO_LE16(echo);
238 elem = ecore_chain_produce(p_chain);
240 DP_NOTICE(p_hwfn, true, "Failed to produce from SPQ chain\n");
244 *elem = p_ent->elem; /* Struct assignment */
246 p_db_data->spq_prod =
247 OSAL_CPU_TO_LE16(ecore_chain_get_prod_idx(p_chain));
249 /* Make sure the SPQE is updated before the doorbell */
250 OSAL_WMB(p_hwfn->p_dev);
252 DOORBELL(p_hwfn, p_spq->db_addr_offset, *(u32 *)p_db_data);
254 /* Make sure doorbell is rang */
255 OSAL_WMB(p_hwfn->p_dev);
257 DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
258 "Doorbelled [0x%08x, CID 0x%08x] with Flags: %02x"
259 " agg_params: %02x, prod: %04x\n",
260 p_spq->db_addr_offset, p_spq->cid, p_db_data->params,
261 p_db_data->agg_flags, ecore_chain_get_prod_idx(p_chain));
263 return ECORE_SUCCESS;
266 /***************************************************************************
267 * Asynchronous events
268 ***************************************************************************/
270 static enum _ecore_status_t
271 ecore_async_event_completion(struct ecore_hwfn *p_hwfn,
272 struct event_ring_entry *p_eqe)
274 ecore_spq_async_comp_cb cb;
276 if (!p_hwfn->p_spq || (p_eqe->protocol_id >= MAX_PROTOCOL_TYPE))
279 cb = p_hwfn->p_spq->async_comp_cb[p_eqe->protocol_id];
281 return cb(p_hwfn, p_eqe->opcode, p_eqe->echo,
282 &p_eqe->data, p_eqe->fw_return_code);
285 true, "Unknown Async completion for protocol: %d\n",
292 ecore_spq_register_async_cb(struct ecore_hwfn *p_hwfn,
293 enum protocol_type protocol_id,
294 ecore_spq_async_comp_cb cb)
296 if (!p_hwfn->p_spq || (protocol_id >= MAX_PROTOCOL_TYPE))
299 p_hwfn->p_spq->async_comp_cb[protocol_id] = cb;
300 return ECORE_SUCCESS;
304 ecore_spq_unregister_async_cb(struct ecore_hwfn *p_hwfn,
305 enum protocol_type protocol_id)
307 if (!p_hwfn->p_spq || (protocol_id >= MAX_PROTOCOL_TYPE))
310 p_hwfn->p_spq->async_comp_cb[protocol_id] = OSAL_NULL;
313 /***************************************************************************
315 ***************************************************************************/
316 void ecore_eq_prod_update(struct ecore_hwfn *p_hwfn, u16 prod)
318 u32 addr = GTT_BAR0_MAP_REG_USDM_RAM +
319 USTORM_EQE_CONS_OFFSET(p_hwfn->rel_pf_id);
321 REG_WR16(p_hwfn, addr, prod);
323 /* keep prod updates ordered */
324 OSAL_MMIOWB(p_hwfn->p_dev);
327 enum _ecore_status_t ecore_eq_completion(struct ecore_hwfn *p_hwfn,
330 struct ecore_eq *p_eq = cookie;
331 struct ecore_chain *p_chain = &p_eq->chain;
332 enum _ecore_status_t rc = 0;
334 /* take a snapshot of the FW consumer */
335 u16 fw_cons_idx = OSAL_LE16_TO_CPU(*p_eq->p_fw_cons);
337 DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ, "fw_cons_idx %x\n", fw_cons_idx);
339 /* Need to guarantee the fw_cons index we use points to a usuable
340 * element (to comply with our chain), so our macros would comply
342 if ((fw_cons_idx & ecore_chain_get_usable_per_page(p_chain)) ==
343 ecore_chain_get_usable_per_page(p_chain)) {
344 fw_cons_idx += ecore_chain_get_unusable_per_page(p_chain);
347 /* Complete current segment of eq entries */
348 while (fw_cons_idx != ecore_chain_get_cons_idx(p_chain)) {
349 struct event_ring_entry *p_eqe = ecore_chain_consume(p_chain);
355 DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
356 "op %x prot %x res0 %x echo %x fwret %x flags %x\n",
357 p_eqe->opcode, /* Event Opcode */
358 p_eqe->protocol_id, /* Event Protocol ID */
359 p_eqe->reserved0, /* Reserved */
360 /* Echo value from ramrod data on the host */
361 OSAL_LE16_TO_CPU(p_eqe->echo),
362 p_eqe->fw_return_code, /* FW return code for SP
367 if (GET_FIELD(p_eqe->flags, EVENT_RING_ENTRY_ASYNC)) {
368 if (ecore_async_event_completion(p_hwfn, p_eqe))
370 } else if (ecore_spq_completion(p_hwfn,
372 p_eqe->fw_return_code,
377 ecore_chain_recycle_consumed(p_chain);
380 ecore_eq_prod_update(p_hwfn, ecore_chain_get_prod_idx(p_chain));
385 enum _ecore_status_t ecore_eq_alloc(struct ecore_hwfn *p_hwfn, u16 num_elem)
387 struct ecore_eq *p_eq;
389 /* Allocate EQ struct */
390 p_eq = OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, sizeof(*p_eq));
392 DP_NOTICE(p_hwfn, true,
393 "Failed to allocate `struct ecore_eq'\n");
397 /* Allocate and initialize EQ chain*/
398 if (ecore_chain_alloc(p_hwfn->p_dev,
399 ECORE_CHAIN_USE_TO_PRODUCE,
400 ECORE_CHAIN_MODE_PBL,
401 ECORE_CHAIN_CNT_TYPE_U16,
403 sizeof(union event_ring_element),
404 &p_eq->chain, OSAL_NULL) != ECORE_SUCCESS) {
405 DP_NOTICE(p_hwfn, true, "Failed to allocate eq chain\n");
406 goto eq_allocate_fail;
409 /* register EQ completion on the SP SB */
410 ecore_int_register_cb(p_hwfn, ecore_eq_completion,
411 p_eq, &p_eq->eq_sb_index, &p_eq->p_fw_cons);
414 return ECORE_SUCCESS;
417 OSAL_FREE(p_hwfn->p_dev, p_eq);
421 void ecore_eq_setup(struct ecore_hwfn *p_hwfn)
423 ecore_chain_reset(&p_hwfn->p_eq->chain);
426 void ecore_eq_free(struct ecore_hwfn *p_hwfn)
431 ecore_chain_free(p_hwfn->p_dev, &p_hwfn->p_eq->chain);
433 OSAL_FREE(p_hwfn->p_dev, p_hwfn->p_eq);
434 p_hwfn->p_eq = OSAL_NULL;
437 /***************************************************************************
438 * CQE API - manipulate EQ functionality
439 ***************************************************************************/
440 static enum _ecore_status_t ecore_cqe_completion(struct ecore_hwfn *p_hwfn,
441 struct eth_slow_path_rx_cqe
443 enum protocol_type protocol)
445 if (IS_VF(p_hwfn->p_dev))
446 return OSAL_VF_CQE_COMPLETION(p_hwfn, cqe, protocol);
448 /* @@@tmp - it's possible we'll eventually want to handle some
449 * actual commands that can arrive here, but for now this is only
450 * used to complete the ramrod using the echo value on the cqe
452 return ecore_spq_completion(p_hwfn, cqe->echo, 0, OSAL_NULL);
455 enum _ecore_status_t ecore_eth_cqe_completion(struct ecore_hwfn *p_hwfn,
456 struct eth_slow_path_rx_cqe *cqe)
458 enum _ecore_status_t rc;
460 rc = ecore_cqe_completion(p_hwfn, cqe, PROTOCOLID_ETH);
462 DP_NOTICE(p_hwfn, true,
463 "Failed to handle RXQ CQE [cmd 0x%02x]\n",
470 /***************************************************************************
471 * Slow hwfn Queue (spq)
472 ***************************************************************************/
473 void ecore_spq_setup(struct ecore_hwfn *p_hwfn)
475 struct ecore_spq *p_spq = p_hwfn->p_spq;
476 struct ecore_spq_entry *p_virt = OSAL_NULL;
477 struct core_db_data *p_db_data;
478 void OSAL_IOMEM *db_addr;
479 dma_addr_t p_phys = 0;
481 enum _ecore_status_t rc;
483 OSAL_LIST_INIT(&p_spq->pending);
484 OSAL_LIST_INIT(&p_spq->completion_pending);
485 OSAL_LIST_INIT(&p_spq->free_pool);
486 OSAL_LIST_INIT(&p_spq->unlimited_pending);
487 OSAL_SPIN_LOCK_INIT(&p_spq->lock);
490 p_phys = p_spq->p_phys + OFFSETOF(struct ecore_spq_entry, ramrod);
491 p_virt = p_spq->p_virt;
493 capacity = ecore_chain_get_capacity(&p_spq->chain);
494 for (i = 0; i < capacity; i++) {
495 DMA_REGPAIR_LE(p_virt->elem.data_ptr, p_phys);
497 OSAL_LIST_PUSH_TAIL(&p_virt->list, &p_spq->free_pool);
500 p_phys += sizeof(struct ecore_spq_entry);
504 p_spq->normal_count = 0;
505 p_spq->comp_count = 0;
506 p_spq->comp_sent_count = 0;
507 p_spq->unlimited_pending_count = 0;
509 OSAL_MEM_ZERO(p_spq->p_comp_bitmap,
510 SPQ_COMP_BMAP_SIZE * sizeof(unsigned long));
511 p_spq->comp_bitmap_idx = 0;
513 /* SPQ cid, cannot fail */
514 ecore_cxt_acquire_cid(p_hwfn, PROTOCOLID_CORE, &p_spq->cid);
515 ecore_spq_hw_initialize(p_hwfn, p_spq);
517 /* reset the chain itself */
518 ecore_chain_reset(&p_spq->chain);
520 /* Initialize the address/data of the SPQ doorbell */
521 p_spq->db_addr_offset = DB_ADDR(p_spq->cid, DQ_DEMS_LEGACY);
522 p_db_data = &p_spq->db_data;
523 OSAL_MEM_ZERO(p_db_data, sizeof(*p_db_data));
524 SET_FIELD(p_db_data->params, CORE_DB_DATA_DEST, DB_DEST_XCM);
525 SET_FIELD(p_db_data->params, CORE_DB_DATA_AGG_CMD, DB_AGG_CMD_MAX);
526 SET_FIELD(p_db_data->params, CORE_DB_DATA_AGG_VAL_SEL,
527 DQ_XCM_CORE_SPQ_PROD_CMD);
528 p_db_data->agg_flags = DQ_XCM_CORE_DQ_CF_CMD;
530 /* Register the SPQ doorbell with the doorbell recovery mechanism */
531 db_addr = (void *)((u8 *)p_hwfn->doorbells + p_spq->db_addr_offset);
532 rc = ecore_db_recovery_add(p_hwfn->p_dev, db_addr, &p_spq->db_data,
533 DB_REC_WIDTH_32B, DB_REC_KERNEL);
534 if (rc != ECORE_SUCCESS)
536 "Failed to register the SPQ doorbell with the doorbell recovery mechanism\n");
539 enum _ecore_status_t ecore_spq_alloc(struct ecore_hwfn *p_hwfn)
541 struct ecore_spq_entry *p_virt = OSAL_NULL;
542 struct ecore_spq *p_spq = OSAL_NULL;
543 dma_addr_t p_phys = 0;
548 OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, sizeof(struct ecore_spq));
550 DP_NOTICE(p_hwfn, true,
551 "Failed to allocate `struct ecore_spq'\n");
556 if (ecore_chain_alloc(p_hwfn->p_dev,
557 ECORE_CHAIN_USE_TO_PRODUCE,
558 ECORE_CHAIN_MODE_SINGLE,
559 ECORE_CHAIN_CNT_TYPE_U16,
560 0, /* N/A when the mode is SINGLE */
561 sizeof(struct slow_path_element),
562 &p_spq->chain, OSAL_NULL)) {
563 DP_NOTICE(p_hwfn, true, "Failed to allocate spq chain\n");
564 goto spq_allocate_fail;
567 /* allocate and fill the SPQ elements (incl. ramrod data list) */
568 capacity = ecore_chain_get_capacity(&p_spq->chain);
569 p_virt = OSAL_DMA_ALLOC_COHERENT(p_hwfn->p_dev, &p_phys,
571 sizeof(struct ecore_spq_entry));
573 goto spq_allocate_fail;
575 p_spq->p_virt = p_virt;
576 p_spq->p_phys = p_phys;
578 #ifdef CONFIG_ECORE_LOCK_ALLOC
579 OSAL_SPIN_LOCK_ALLOC(p_hwfn, &p_spq->lock);
582 p_hwfn->p_spq = p_spq;
583 return ECORE_SUCCESS;
586 ecore_chain_free(p_hwfn->p_dev, &p_spq->chain);
587 OSAL_FREE(p_hwfn->p_dev, p_spq);
591 void ecore_spq_free(struct ecore_hwfn *p_hwfn)
593 struct ecore_spq *p_spq = p_hwfn->p_spq;
594 void OSAL_IOMEM *db_addr;
600 /* Delete the SPQ doorbell from the doorbell recovery mechanism */
601 db_addr = (void *)((u8 *)p_hwfn->doorbells + p_spq->db_addr_offset);
602 ecore_db_recovery_del(p_hwfn->p_dev, db_addr, &p_spq->db_data);
605 capacity = ecore_chain_get_capacity(&p_spq->chain);
606 OSAL_DMA_FREE_COHERENT(p_hwfn->p_dev,
610 sizeof(struct ecore_spq_entry));
613 ecore_chain_free(p_hwfn->p_dev, &p_spq->chain);
614 #ifdef CONFIG_ECORE_LOCK_ALLOC
615 OSAL_SPIN_LOCK_DEALLOC(&p_spq->lock);
618 OSAL_FREE(p_hwfn->p_dev, p_spq);
622 ecore_spq_get_entry(struct ecore_hwfn *p_hwfn, struct ecore_spq_entry **pp_ent)
624 struct ecore_spq *p_spq = p_hwfn->p_spq;
625 struct ecore_spq_entry *p_ent = OSAL_NULL;
626 enum _ecore_status_t rc = ECORE_SUCCESS;
628 OSAL_SPIN_LOCK(&p_spq->lock);
630 if (OSAL_LIST_IS_EMPTY(&p_spq->free_pool)) {
631 p_ent = OSAL_ZALLOC(p_hwfn->p_dev, GFP_ATOMIC, sizeof(*p_ent));
633 DP_NOTICE(p_hwfn, true,
634 "Failed to allocate an SPQ entry for a pending"
639 p_ent->queue = &p_spq->unlimited_pending;
641 p_ent = OSAL_LIST_FIRST_ENTRY(&p_spq->free_pool,
642 struct ecore_spq_entry, list);
643 OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->free_pool);
644 p_ent->queue = &p_spq->pending;
650 OSAL_SPIN_UNLOCK(&p_spq->lock);
654 /* Locked variant; Should be called while the SPQ lock is taken */
655 static void __ecore_spq_return_entry(struct ecore_hwfn *p_hwfn,
656 struct ecore_spq_entry *p_ent)
658 OSAL_LIST_PUSH_TAIL(&p_ent->list, &p_hwfn->p_spq->free_pool);
661 void ecore_spq_return_entry(struct ecore_hwfn *p_hwfn,
662 struct ecore_spq_entry *p_ent)
664 OSAL_SPIN_LOCK(&p_hwfn->p_spq->lock);
665 __ecore_spq_return_entry(p_hwfn, p_ent);
666 OSAL_SPIN_UNLOCK(&p_hwfn->p_spq->lock);
670 * @brief ecore_spq_add_entry - adds a new entry to the pending
671 * list. Should be used while lock is being held.
673 * Addes an entry to the pending list is there is room (en empty
674 * element is available in the free_pool), or else places the
675 * entry in the unlimited_pending pool.
681 * @return enum _ecore_status_t
683 static enum _ecore_status_t
684 ecore_spq_add_entry(struct ecore_hwfn *p_hwfn,
685 struct ecore_spq_entry *p_ent, enum spq_priority priority)
687 struct ecore_spq *p_spq = p_hwfn->p_spq;
689 if (p_ent->queue == &p_spq->unlimited_pending) {
690 if (OSAL_LIST_IS_EMPTY(&p_spq->free_pool)) {
691 OSAL_LIST_PUSH_TAIL(&p_ent->list,
692 &p_spq->unlimited_pending);
693 p_spq->unlimited_pending_count++;
695 return ECORE_SUCCESS;
698 struct ecore_spq_entry *p_en2;
700 p_en2 = OSAL_LIST_FIRST_ENTRY(&p_spq->free_pool,
701 struct ecore_spq_entry,
703 OSAL_LIST_REMOVE_ENTRY(&p_en2->list, &p_spq->free_pool);
705 /* Copy the ring element physical pointer to the new
706 * entry, since we are about to override the entire ring
707 * entry and don't want to lose the pointer.
709 p_ent->elem.data_ptr = p_en2->elem.data_ptr;
713 /* EBLOCK responsible to free the allocated p_ent */
714 if (p_ent->comp_mode != ECORE_SPQ_MODE_EBLOCK)
715 OSAL_FREE(p_hwfn->p_dev, p_ent);
721 /* entry is to be placed in 'pending' queue */
723 case ECORE_SPQ_PRIORITY_NORMAL:
724 OSAL_LIST_PUSH_TAIL(&p_ent->list, &p_spq->pending);
725 p_spq->normal_count++;
727 case ECORE_SPQ_PRIORITY_HIGH:
728 OSAL_LIST_PUSH_HEAD(&p_ent->list, &p_spq->pending);
735 return ECORE_SUCCESS;
738 /***************************************************************************
740 ***************************************************************************/
742 u32 ecore_spq_get_cid(struct ecore_hwfn *p_hwfn)
745 return 0xffffffff; /* illegal */
746 return p_hwfn->p_spq->cid;
749 /***************************************************************************
750 * Posting new Ramrods
751 ***************************************************************************/
753 static enum _ecore_status_t ecore_spq_post_list(struct ecore_hwfn *p_hwfn,
757 struct ecore_spq *p_spq = p_hwfn->p_spq;
758 enum _ecore_status_t rc;
760 /* TODO - implementation might be wasteful; will always keep room
761 * for an additional high priority ramrod (even if one is already
764 while (ecore_chain_get_elem_left(&p_spq->chain) > keep_reserve &&
765 !OSAL_LIST_IS_EMPTY(head)) {
766 struct ecore_spq_entry *p_ent =
767 OSAL_LIST_FIRST_ENTRY(head, struct ecore_spq_entry, list);
768 if (p_ent != OSAL_NULL) {
770 #pragma warning(suppress : 6011 28182)
772 OSAL_LIST_REMOVE_ENTRY(&p_ent->list, head);
773 OSAL_LIST_PUSH_TAIL(&p_ent->list,
774 &p_spq->completion_pending);
775 p_spq->comp_sent_count++;
777 rc = ecore_spq_hw_post(p_hwfn, p_spq, p_ent);
779 OSAL_LIST_REMOVE_ENTRY(&p_ent->list,
780 &p_spq->completion_pending);
781 __ecore_spq_return_entry(p_hwfn, p_ent);
787 return ECORE_SUCCESS;
790 static enum _ecore_status_t ecore_spq_pend_post(struct ecore_hwfn *p_hwfn)
792 struct ecore_spq *p_spq = p_hwfn->p_spq;
793 struct ecore_spq_entry *p_ent = OSAL_NULL;
795 while (!OSAL_LIST_IS_EMPTY(&p_spq->free_pool)) {
796 if (OSAL_LIST_IS_EMPTY(&p_spq->unlimited_pending))
799 p_ent = OSAL_LIST_FIRST_ENTRY(&p_spq->unlimited_pending,
800 struct ecore_spq_entry, list);
805 #pragma warning(suppress : 6011)
807 OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->unlimited_pending);
809 ecore_spq_add_entry(p_hwfn, p_ent, p_ent->priority);
812 return ecore_spq_post_list(p_hwfn,
813 &p_spq->pending, SPQ_HIGH_PRI_RESERVE_DEFAULT);
816 enum _ecore_status_t ecore_spq_post(struct ecore_hwfn *p_hwfn,
817 struct ecore_spq_entry *p_ent,
820 enum _ecore_status_t rc = ECORE_SUCCESS;
821 struct ecore_spq *p_spq = p_hwfn ? p_hwfn->p_spq : OSAL_NULL;
822 bool b_ret_ent = true;
828 DP_NOTICE(p_hwfn, true, "Got a NULL pointer\n");
832 if (p_hwfn->p_dev->recov_in_prog) {
833 DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
834 "Recovery is in progress -> skip spq post"
835 " [cmd %02x protocol %02x]\n",
836 p_ent->elem.hdr.cmd_id, p_ent->elem.hdr.protocol_id);
837 /* Return success to let the flows to be completed successfully
838 * w/o any error handling.
840 return ECORE_SUCCESS;
843 OSAL_SPIN_LOCK(&p_spq->lock);
845 /* Complete the entry */
846 rc = ecore_spq_fill_entry(p_hwfn, p_ent);
848 /* Check return value after LOCK is taken for cleaner error flow */
852 /* Add the request to the pending queue */
853 rc = ecore_spq_add_entry(p_hwfn, p_ent, p_ent->priority);
857 rc = ecore_spq_pend_post(p_hwfn);
859 /* Since it's possible that pending failed for a different
860 * entry [although unlikely], the failed entry was already
861 * dealt with; No need to return it here.
867 OSAL_SPIN_UNLOCK(&p_spq->lock);
869 if (p_ent->comp_mode == ECORE_SPQ_MODE_EBLOCK) {
870 /* For entries in ECORE BLOCK mode, the completion code cannot
871 * perform the necessary cleanup - if it did, we couldn't
872 * access p_ent here to see whether it's successful or not.
873 * Thus, after gaining the answer perform the cleanup here.
875 rc = ecore_spq_block(p_hwfn, p_ent, fw_return_code,
876 p_ent->queue == &p_spq->unlimited_pending);
878 if (p_ent->queue == &p_spq->unlimited_pending) {
879 /* This is an allocated p_ent which does not need to
882 OSAL_FREE(p_hwfn->p_dev, p_ent);
884 /* TBD: handle error flow and remove p_ent from
894 ecore_spq_return_entry(p_hwfn, p_ent);
899 OSAL_SPIN_LOCK(&p_spq->lock);
900 OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->completion_pending);
901 ecore_chain_return_produced(&p_spq->chain);
904 /* return to the free pool */
906 __ecore_spq_return_entry(p_hwfn, p_ent);
907 OSAL_SPIN_UNLOCK(&p_spq->lock);
912 enum _ecore_status_t ecore_spq_completion(struct ecore_hwfn *p_hwfn,
915 union event_ring_data *p_data)
917 struct ecore_spq *p_spq;
918 struct ecore_spq_entry *p_ent = OSAL_NULL;
919 struct ecore_spq_entry *tmp;
920 struct ecore_spq_entry *found = OSAL_NULL;
921 enum _ecore_status_t rc;
926 p_spq = p_hwfn->p_spq;
930 OSAL_SPIN_LOCK(&p_spq->lock);
931 OSAL_LIST_FOR_EACH_ENTRY_SAFE(p_ent,
933 &p_spq->completion_pending,
934 list, struct ecore_spq_entry) {
935 if (p_ent->elem.hdr.echo == echo) {
936 OSAL_LIST_REMOVE_ENTRY(&p_ent->list,
937 &p_spq->completion_pending);
939 /* Avoid overriding of SPQ entries when getting
940 * out-of-order completions, by marking the completions
941 * in a bitmap and increasing the chain consumer only
942 * for the first successive completed entries.
944 SPQ_COMP_BMAP_SET_BIT(p_spq, echo);
945 while (SPQ_COMP_BMAP_TEST_BIT(p_spq,
946 p_spq->comp_bitmap_idx)) {
947 SPQ_COMP_BMAP_CLEAR_BIT(p_spq,
948 p_spq->comp_bitmap_idx);
949 p_spq->comp_bitmap_idx++;
950 ecore_chain_return_produced(&p_spq->chain);
958 /* This is debug and should be relatively uncommon - depends
959 * on scenarios which have mutliple per-PF sent ramrods.
961 DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
962 "Got completion for echo %04x - doesn't match"
963 " echo %04x in completion pending list\n",
964 OSAL_LE16_TO_CPU(echo),
965 OSAL_LE16_TO_CPU(p_ent->elem.hdr.echo));
968 /* Release lock before callback, as callback may post
969 * an additional ramrod.
971 OSAL_SPIN_UNLOCK(&p_spq->lock);
974 DP_NOTICE(p_hwfn, true,
975 "Failed to find an entry this"
976 " EQE [echo %04x] completes\n",
977 OSAL_LE16_TO_CPU(echo));
981 DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
982 "Complete EQE [echo %04x]: func %p cookie %p)\n",
983 OSAL_LE16_TO_CPU(echo),
984 p_ent->comp_cb.function, p_ent->comp_cb.cookie);
985 if (found->comp_cb.function)
986 found->comp_cb.function(p_hwfn, found->comp_cb.cookie, p_data,
989 DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
990 "Got a completion without a callback function\n");
992 if ((found->comp_mode != ECORE_SPQ_MODE_EBLOCK) ||
993 (found->queue == &p_spq->unlimited_pending))
994 /* EBLOCK is responsible for returning its own entry into the
995 * free list, unless it originally added the entry into the
996 * unlimited pending list.
998 ecore_spq_return_entry(p_hwfn, found);
1000 /* Attempt to post pending requests */
1001 OSAL_SPIN_LOCK(&p_spq->lock);
1002 rc = ecore_spq_pend_post(p_hwfn);
1003 OSAL_SPIN_UNLOCK(&p_spq->lock);
1008 enum _ecore_status_t ecore_consq_alloc(struct ecore_hwfn *p_hwfn)
1010 struct ecore_consq *p_consq;
1012 /* Allocate ConsQ struct */
1014 OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, sizeof(*p_consq));
1016 DP_NOTICE(p_hwfn, true,
1017 "Failed to allocate `struct ecore_consq'\n");
1021 /* Allocate and initialize EQ chain */
1022 if (ecore_chain_alloc(p_hwfn->p_dev,
1023 ECORE_CHAIN_USE_TO_PRODUCE,
1024 ECORE_CHAIN_MODE_PBL,
1025 ECORE_CHAIN_CNT_TYPE_U16,
1026 ECORE_CHAIN_PAGE_SIZE / 0x80,
1028 &p_consq->chain, OSAL_NULL) != ECORE_SUCCESS) {
1029 DP_NOTICE(p_hwfn, true, "Failed to allocate consq chain");
1030 goto consq_allocate_fail;
1033 p_hwfn->p_consq = p_consq;
1034 return ECORE_SUCCESS;
1036 consq_allocate_fail:
1037 OSAL_FREE(p_hwfn->p_dev, p_consq);
1041 void ecore_consq_setup(struct ecore_hwfn *p_hwfn)
1043 ecore_chain_reset(&p_hwfn->p_consq->chain);
1046 void ecore_consq_free(struct ecore_hwfn *p_hwfn)
1048 if (!p_hwfn->p_consq)
1051 ecore_chain_free(p_hwfn->p_dev, &p_hwfn->p_consq->chain);
1052 OSAL_FREE(p_hwfn->p_dev, p_hwfn->p_consq);