xref: /freebsd/sys/dev/qlnx/qlnxe/ecore_spq.c (revision 22cf89c938886d14f5796fc49f9f020c23ea8eaf)
1 /*
2  * Copyright (c) 2017-2018 Cavium, Inc.
3  * All rights reserved.
4  *
5  *  Redistribution and use in source and binary forms, with or without
6  *  modification, are permitted provided that the following conditions
7  *  are met:
8  *
9  *  1. Redistributions of source code must retain the above copyright
10  *     notice, this list of conditions and the following disclaimer.
11  *  2. Redistributions in binary form must reproduce the above copyright
12  *     notice, this list of conditions and the following disclaimer in the
13  *     documentation and/or other materials provided with the distribution.
14  *
15  *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16  *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17  *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
19  *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20  *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21  *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22  *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23  *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
24  *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25  *  POSSIBILITY OF SUCH DAMAGE.
26  */
27 /*
28  * File : ecore_spq.c
29  */
30 #include <sys/cdefs.h>
31 #include "bcm_osal.h"
32 #include "reg_addr.h"
33 #include "ecore_gtt_reg_addr.h"
34 #include "ecore_hsi_common.h"
35 #include "ecore.h"
36 #include "ecore_sp_api.h"
37 #include "ecore_spq.h"
38 #include "ecore_iro.h"
39 #include "ecore_init_fw_funcs.h"
40 #include "ecore_cxt.h"
41 #include "ecore_int.h"
42 #include "ecore_dev_api.h"
43 #include "ecore_mcp.h"
44 #ifdef CONFIG_ECORE_RDMA
45 #include "ecore_rdma.h"
46 #endif
47 #include "ecore_hw.h"
48 #include "ecore_sriov.h"
49 #ifdef CONFIG_ECORE_ISCSI
50 #include "ecore_iscsi.h"
51 #include "ecore_ooo.h"
52 #endif
53 
54 #ifdef _NTDDK_
55 #pragma warning(push)
56 #pragma warning(disable : 28167)
57 #pragma warning(disable : 28123)
58 #endif
59 
60 /***************************************************************************
61  * Structures & Definitions
62  ***************************************************************************/
63 
64 #define SPQ_HIGH_PRI_RESERVE_DEFAULT	(1)
65 
66 #define SPQ_BLOCK_DELAY_MAX_ITER	(10)
67 #define SPQ_BLOCK_DELAY_US		(10)
68 #define SPQ_BLOCK_SLEEP_MAX_ITER	(200)
69 #define SPQ_BLOCK_SLEEP_MS		(5)
70 
71 #ifndef REMOVE_DBG
72 /***************************************************************************
73  * Debug [iSCSI] tool
74  ***************************************************************************/
75 static void ecore_iscsi_eq_dump(struct ecore_hwfn *p_hwfn,
76 				struct event_ring_entry *p_eqe)
77 {
78 	if (p_eqe->opcode >= MAX_ISCSI_EQE_OPCODE) {
79 		DP_NOTICE(p_hwfn, false, "Unknown iSCSI EQ: %x\n",
80 			  p_eqe->opcode);
81 	}
82 
83 	switch (p_eqe->opcode) {
84 	case ISCSI_EVENT_TYPE_INIT_FUNC:
85 	case ISCSI_EVENT_TYPE_DESTROY_FUNC:
86 		/* NOPE */
87 		break;
88 	case ISCSI_EVENT_TYPE_OFFLOAD_CONN:
89 	case ISCSI_EVENT_TYPE_TERMINATE_CONN:
90 		DP_VERBOSE(p_hwfn, ECORE_MSG_STORAGE,
91 			   "iSCSI EQE: Port %x, Op %x, echo %x, FWret %x, CID %x, ConnID %x, ERR %x\n",
92 			   p_hwfn->port_id, p_eqe->opcode,
93 			   OSAL_LE16_TO_CPU(p_eqe->echo),
94 			   p_eqe->fw_return_code,
95 			   OSAL_LE16_TO_CPU(p_eqe->data.iscsi_info.icid),
96 			   OSAL_LE16_TO_CPU(p_eqe->data.iscsi_info.conn_id),
97 			   p_eqe->data.iscsi_info.error_code);
98 		break;
99 	case ISCSI_EVENT_TYPE_UPDATE_CONN:
100 	case ISCSI_EVENT_TYPE_CLEAR_SQ:
101 	case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE:
102 	case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE:
103 	case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD:
104 	case ISCSI_EVENT_TYPE_ASYN_CLOSE_RCVD:
105 	case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD:
106 	case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME:
107 	case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT:
108 	case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT:
109 	case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2:
110 	case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR:
111 	case ISCSI_EVENT_TYPE_TCP_CONN_ERROR:
112 	default:
113 		/* NOPE */
114 		break;
115 	}
116 }
117 #endif
118 
119 /***************************************************************************
120  * Blocking Imp. (BLOCK/EBLOCK mode)
121  ***************************************************************************/
122 static void ecore_spq_blocking_cb(struct ecore_hwfn *p_hwfn, void *cookie,
123 				  union event_ring_data OSAL_UNUSED *data,
124 				  u8 fw_return_code)
125 {
126 	struct ecore_spq_comp_done *comp_done;
127 
128 	comp_done = (struct ecore_spq_comp_done *)cookie;
129 
130 	comp_done->done = 0x1;
131 	comp_done->fw_return_code = fw_return_code;
132 
133 	/* make update visible to waiting thread */
134 	OSAL_SMP_WMB(p_hwfn->p_dev);
135 }
136 
137 static enum _ecore_status_t __ecore_spq_block(struct ecore_hwfn *p_hwfn,
138 					      struct ecore_spq_entry *p_ent,
139 					      u8 *p_fw_ret,
140 					      bool sleep_between_iter)
141 {
142 	struct ecore_spq_comp_done *comp_done;
143 	u32 iter_cnt;
144 
145 	comp_done = (struct ecore_spq_comp_done *)p_ent->comp_cb.cookie;
146 	iter_cnt = sleep_between_iter ? SPQ_BLOCK_SLEEP_MAX_ITER
147 				      : SPQ_BLOCK_DELAY_MAX_ITER;
148 #ifndef ASIC_ONLY
149 	if (CHIP_REV_IS_EMUL(p_hwfn->p_dev) && sleep_between_iter)
150 		iter_cnt *= 5;
151 #endif
152 
153 	while (iter_cnt--) {
154 		OSAL_POLL_MODE_DPC(p_hwfn);
155 		OSAL_SMP_RMB(p_hwfn->p_dev);
156 		if (comp_done->done == 1) {
157 			if (p_fw_ret)
158 				*p_fw_ret = comp_done->fw_return_code;
159 			return ECORE_SUCCESS;
160 		}
161 
162 		if (sleep_between_iter) {
163 			OSAL_MSLEEP(SPQ_BLOCK_SLEEP_MS);
164 		} else {
165 			OSAL_UDELAY(SPQ_BLOCK_DELAY_US);
166 		}
167 	}
168 
169 	return ECORE_TIMEOUT;
170 }
171 
172 static enum _ecore_status_t ecore_spq_block(struct ecore_hwfn *p_hwfn,
173 					    struct ecore_spq_entry *p_ent,
174 					    u8 *p_fw_ret, bool skip_quick_poll)
175 {
176 	struct ecore_spq_comp_done *comp_done;
177 	struct ecore_ptt *p_ptt;
178 	enum _ecore_status_t rc;
179 
180 	/* A relatively short polling period w/o sleeping, to allow the FW to
181 	 * complete the ramrod and thus possibly to avoid the following sleeps.
182 	 */
183 	if (!skip_quick_poll) {
184 		rc = __ecore_spq_block(p_hwfn, p_ent, p_fw_ret, false);
185 		if (rc == ECORE_SUCCESS)
186 			return ECORE_SUCCESS;
187 	}
188 
189 	/* Move to polling with a sleeping period between iterations */
190 	rc = __ecore_spq_block(p_hwfn, p_ent, p_fw_ret, true);
191 	if (rc == ECORE_SUCCESS)
192 		return ECORE_SUCCESS;
193 
194 	p_ptt = ecore_ptt_acquire(p_hwfn);
195 	if (!p_ptt)
196 		return ECORE_AGAIN;
197 
198 	DP_INFO(p_hwfn, "Ramrod is stuck, requesting MCP drain\n");
199 	rc = ecore_mcp_drain(p_hwfn, p_ptt);
200 	ecore_ptt_release(p_hwfn, p_ptt);
201 	if (rc != ECORE_SUCCESS) {
202 		DP_NOTICE(p_hwfn, true, "MCP drain failed\n");
203 		goto err;
204 	}
205 
206 	/* Retry after drain */
207 	rc = __ecore_spq_block(p_hwfn, p_ent, p_fw_ret, true);
208 	if (rc == ECORE_SUCCESS)
209 		return ECORE_SUCCESS;
210 
211 	comp_done = (struct ecore_spq_comp_done *)p_ent->comp_cb.cookie;
212 	if (comp_done->done == 1) {
213 		if (p_fw_ret)
214 			*p_fw_ret = comp_done->fw_return_code;
215 		return ECORE_SUCCESS;
216 	}
217 err:
218 	DP_NOTICE(p_hwfn, true,
219 		  "Ramrod is stuck [CID %08x cmd %02x protocol %02x echo %04x]\n",
220 		  OSAL_LE32_TO_CPU(p_ent->elem.hdr.cid),
221 		  p_ent->elem.hdr.cmd_id, p_ent->elem.hdr.protocol_id,
222 		  OSAL_LE16_TO_CPU(p_ent->elem.hdr.echo));
223 
224 	ecore_hw_err_notify(p_hwfn, ECORE_HW_ERR_RAMROD_FAIL);
225 
226 	return ECORE_BUSY;
227 }
228 
229 /***************************************************************************
230  * SPQ entries inner API
231  ***************************************************************************/
232 static enum _ecore_status_t ecore_spq_fill_entry(struct ecore_hwfn *p_hwfn,
233 						 struct ecore_spq_entry *p_ent)
234 {
235 	p_ent->flags = 0;
236 
237 	switch (p_ent->comp_mode) {
238 	case ECORE_SPQ_MODE_EBLOCK:
239 	case ECORE_SPQ_MODE_BLOCK:
240 		p_ent->comp_cb.function = ecore_spq_blocking_cb;
241 		break;
242 	case ECORE_SPQ_MODE_CB:
243 		break;
244 	default:
245 		DP_NOTICE(p_hwfn, true, "Unknown SPQE completion mode %d\n",
246 			  p_ent->comp_mode);
247 		return ECORE_INVAL;
248 	}
249 
250 	DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
251 		   "Ramrod header: [CID 0x%08x CMD 0x%02x protocol 0x%02x] Data pointer: [%08x:%08x] Completion Mode: %s\n",
252 		   p_ent->elem.hdr.cid, p_ent->elem.hdr.cmd_id,
253 		   p_ent->elem.hdr.protocol_id,
254 		   p_ent->elem.data_ptr.hi, p_ent->elem.data_ptr.lo,
255 		   D_TRINE(p_ent->comp_mode, ECORE_SPQ_MODE_EBLOCK,
256 			   ECORE_SPQ_MODE_BLOCK, "MODE_EBLOCK", "MODE_BLOCK",
257 			   "MODE_CB"));
258 
259 	return ECORE_SUCCESS;
260 }
261 
262 /***************************************************************************
263  * HSI access
264  ***************************************************************************/
265 static void ecore_spq_hw_initialize(struct ecore_hwfn *p_hwfn,
266 				    struct ecore_spq  *p_spq)
267 {
268 	struct e4_core_conn_context *p_cxt;
269 	struct ecore_cxt_info cxt_info;
270 	u16 physical_q;
271 	enum _ecore_status_t rc;
272 
273 	cxt_info.iid = p_spq->cid;
274 
275 	rc = ecore_cxt_get_cid_info(p_hwfn, &cxt_info);
276 
277 	if (rc < 0) {
278 		DP_NOTICE(p_hwfn, true, "Cannot find context info for cid=%d\n",
279 			  p_spq->cid);
280 		return;
281 	}
282 
283 	p_cxt = cxt_info.p_cxt;
284 
285 	/* @@@TBD we zero the context until we have ilt_reset implemented. */
286 	OSAL_MEM_ZERO(p_cxt, sizeof(*p_cxt));
287 
288 	if (ECORE_IS_BB(p_hwfn->p_dev) || ECORE_IS_AH(p_hwfn->p_dev)) {
289 		SET_FIELD(p_cxt->xstorm_ag_context.flags10,
290 			  E4_XSTORM_CORE_CONN_AG_CTX_DQ_CF_EN, 1);
291 		SET_FIELD(p_cxt->xstorm_ag_context.flags1,
292 			  E4_XSTORM_CORE_CONN_AG_CTX_DQ_CF_ACTIVE, 1);
293 		/*SET_FIELD(p_cxt->xstorm_ag_context.flags10,
294 			  E4_XSTORM_CORE_CONN_AG_CTX_SLOW_PATH_EN, 1);*/
295 		SET_FIELD(p_cxt->xstorm_ag_context.flags9,
296 			  E4_XSTORM_CORE_CONN_AG_CTX_CONSOLID_PROD_CF_EN, 1);
297 	} else { /* E5 */
298 		ECORE_E5_MISSING_CODE;
299 	}
300 
301 	/* CDU validation - FIXME currently disabled */
302 
303 	/* QM physical queue */
304 	physical_q = ecore_get_cm_pq_idx(p_hwfn, PQ_FLAGS_LB);
305 	p_cxt->xstorm_ag_context.physical_q0 = OSAL_CPU_TO_LE16(physical_q);
306 
307 	p_cxt->xstorm_st_context.spq_base_lo =
308 		DMA_LO_LE(p_spq->chain.p_phys_addr);
309 	p_cxt->xstorm_st_context.spq_base_hi =
310 		DMA_HI_LE(p_spq->chain.p_phys_addr);
311 
312 	DMA_REGPAIR_LE(p_cxt->xstorm_st_context.consolid_base_addr,
313 		       p_hwfn->p_consq->chain.p_phys_addr);
314 }
315 
316 static enum _ecore_status_t ecore_spq_hw_post(struct ecore_hwfn		*p_hwfn,
317 					      struct ecore_spq		*p_spq,
318 					      struct ecore_spq_entry	*p_ent)
319 {
320 	struct ecore_chain *p_chain = &p_hwfn->p_spq->chain;
321 	struct core_db_data *p_db_data = &p_spq->db_data;
322 	u16 echo = ecore_chain_get_prod_idx(p_chain);
323 	struct slow_path_element *elem;
324 
325 	p_ent->elem.hdr.echo = OSAL_CPU_TO_LE16(echo);
326 	elem = ecore_chain_produce(p_chain);
327 	if (!elem) {
328 		DP_NOTICE(p_hwfn, true, "Failed to produce from SPQ chain\n");
329 		return ECORE_INVAL;
330 	}
331 
332 	*elem = p_ent->elem; /* Struct assignment */
333 
334 	p_db_data->spq_prod =
335 		OSAL_CPU_TO_LE16(ecore_chain_get_prod_idx(p_chain));
336 
337 	/* Make sure the SPQE is updated before the doorbell */
338 	OSAL_WMB(p_hwfn->p_dev);
339 
340 	DOORBELL(p_hwfn, p_spq->db_addr_offset, *(u32 *)p_db_data);
341 
342 	/* Make sure doorbell was rung */
343 	OSAL_WMB(p_hwfn->p_dev);
344 
345 	DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
346 		   "Doorbelled [0x%08x, CID 0x%08x] with Flags: %02x agg_params: %02x, prod: %04x\n",
347 		   p_spq->db_addr_offset, p_spq->cid, p_db_data->params,
348 		   p_db_data->agg_flags, ecore_chain_get_prod_idx(p_chain));
349 
350 	return ECORE_SUCCESS;
351 }
352 
353 /***************************************************************************
354  * Asynchronous events
355  ***************************************************************************/
356 
357 static enum _ecore_status_t
358 ecore_async_event_completion(struct ecore_hwfn *p_hwfn,
359 			     struct event_ring_entry *p_eqe)
360 {
361 	ecore_spq_async_comp_cb cb;
362 
363 	if (!p_hwfn->p_spq || (p_eqe->protocol_id >= MAX_PROTOCOL_TYPE)) {
364 		return ECORE_INVAL;
365 	}
366 
367 	cb = p_hwfn->p_spq->async_comp_cb[p_eqe->protocol_id];
368 	if (cb) {
369 		return cb(p_hwfn, p_eqe->opcode, p_eqe->echo,
370 			  &p_eqe->data, p_eqe->fw_return_code);
371 	} else {
372 		DP_NOTICE(p_hwfn,
373 			  true, "Unknown Async completion for protocol: %d\n",
374 			  p_eqe->protocol_id);
375 		return ECORE_INVAL;
376 	}
377 }
378 
379 enum _ecore_status_t
380 ecore_spq_register_async_cb(struct ecore_hwfn *p_hwfn,
381 			    enum protocol_type protocol_id,
382 			    ecore_spq_async_comp_cb cb)
383 {
384 	if (!p_hwfn->p_spq || (protocol_id >= MAX_PROTOCOL_TYPE)) {
385 		return ECORE_INVAL;
386 	}
387 
388 	p_hwfn->p_spq->async_comp_cb[protocol_id] = cb;
389 	return ECORE_SUCCESS;
390 }
391 
392 void
393 ecore_spq_unregister_async_cb(struct ecore_hwfn *p_hwfn,
394 			      enum protocol_type protocol_id)
395 {
396 	if (!p_hwfn->p_spq || (protocol_id >= MAX_PROTOCOL_TYPE)) {
397 		return;
398 	}
399 
400 	p_hwfn->p_spq->async_comp_cb[protocol_id] = OSAL_NULL;
401 }
402 
403 /***************************************************************************
404  * EQ API
405  ***************************************************************************/
406 void ecore_eq_prod_update(struct ecore_hwfn	*p_hwfn,
407 			  u16			prod)
408 {
409 	u32 addr = GTT_BAR0_MAP_REG_USDM_RAM +
410 		USTORM_EQE_CONS_OFFSET(p_hwfn->rel_pf_id);
411 
412 	REG_WR16(p_hwfn, addr, prod);
413 
414 	/* keep prod updates ordered */
415 	OSAL_MMIOWB(p_hwfn->p_dev);
416 }
417 
418 enum _ecore_status_t ecore_eq_completion(struct ecore_hwfn	*p_hwfn,
419 					 void                   *cookie)
420 
421 {
422 	struct ecore_eq    *p_eq    = cookie;
423 	struct ecore_chain *p_chain = &p_eq->chain;
424 	enum _ecore_status_t rc = 0;
425 
426 	/* take a snapshot of the FW consumer */
427 	u16 fw_cons_idx = OSAL_LE16_TO_CPU(*p_eq->p_fw_cons);
428 
429 	DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ, "fw_cons_idx %x\n", fw_cons_idx);
430 
431 	/* Need to guarantee the fw_cons index we use points to a usuable
432 	 * element (to comply with our chain), so our macros would comply
433 	 */
434 	if ((fw_cons_idx & ecore_chain_get_usable_per_page(p_chain)) ==
435 	    ecore_chain_get_usable_per_page(p_chain)) {
436 		fw_cons_idx += ecore_chain_get_unusable_per_page(p_chain);
437 	}
438 
439 	/* Complete current segment of eq entries */
440 	while (fw_cons_idx != ecore_chain_get_cons_idx(p_chain)) {
441 		struct event_ring_entry *p_eqe = ecore_chain_consume(p_chain);
442 		if (!p_eqe) {
443 			rc = ECORE_INVAL;
444 			break;
445 		}
446 
447 		DP_VERBOSE(p_hwfn,
448 			   ECORE_MSG_SPQ,
449 			   "op %x prot %x res0 %x echo %x fwret %x flags %x\n",
450 			   p_eqe->opcode,	     /* Event Opcode */
451 			   p_eqe->protocol_id,	     /* Event Protocol ID */
452 			   p_eqe->reserved0,	     /* Reserved */
453 			   OSAL_LE16_TO_CPU(p_eqe->echo),/* Echo value from
454 							ramrod data on the host
455 						      */
456 			   p_eqe->fw_return_code,    /* FW return code for SP
457 							ramrods
458 						      */
459 			   p_eqe->flags);
460 #ifndef REMOVE_DBG
461 		if (p_eqe->protocol_id == PROTOCOLID_ISCSI)
462 			ecore_iscsi_eq_dump(p_hwfn, p_eqe);
463 #endif
464 
465 		if (GET_FIELD(p_eqe->flags, EVENT_RING_ENTRY_ASYNC)) {
466 			if (ecore_async_event_completion(p_hwfn, p_eqe))
467 				rc = ECORE_INVAL;
468 		} else if (ecore_spq_completion(p_hwfn,
469 						p_eqe->echo,
470 						p_eqe->fw_return_code,
471 						&p_eqe->data)) {
472 			rc = ECORE_INVAL;
473 		}
474 
475 		ecore_chain_recycle_consumed(p_chain);
476 	}
477 
478 	ecore_eq_prod_update(p_hwfn, ecore_chain_get_prod_idx(p_chain));
479 
480 	/* Attempt to post pending requests */
481 	OSAL_SPIN_LOCK(&p_hwfn->p_spq->lock);
482 	rc = ecore_spq_pend_post(p_hwfn);
483 	OSAL_SPIN_UNLOCK(&p_hwfn->p_spq->lock);
484 
485 	return rc;
486 }
487 
488 enum _ecore_status_t ecore_eq_alloc(struct ecore_hwfn *p_hwfn, u16 num_elem)
489 {
490 	struct ecore_eq	*p_eq;
491 
492 	/* Allocate EQ struct */
493 	p_eq = OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, sizeof(*p_eq));
494 	if (!p_eq) {
495 		DP_NOTICE(p_hwfn, false,
496 			  "Failed to allocate `struct ecore_eq'\n");
497 		return ECORE_NOMEM;
498 	}
499 
500 	/* Allocate and initialize EQ chain*/
501 	if (ecore_chain_alloc(p_hwfn->p_dev,
502 			      ECORE_CHAIN_USE_TO_PRODUCE,
503 			      ECORE_CHAIN_MODE_PBL,
504 			      ECORE_CHAIN_CNT_TYPE_U16,
505 			      num_elem,
506 			      sizeof(union event_ring_element),
507 			      &p_eq->chain, OSAL_NULL) != ECORE_SUCCESS) {
508 		DP_NOTICE(p_hwfn, false, "Failed to allocate eq chain\n");
509 		goto eq_allocate_fail;
510 	}
511 
512 	/* register EQ completion on the SP SB */
513 	ecore_int_register_cb(p_hwfn, ecore_eq_completion,
514 			      p_eq, &p_eq->eq_sb_index, &p_eq->p_fw_cons);
515 
516 	p_hwfn->p_eq = p_eq;
517 	return ECORE_SUCCESS;
518 
519 eq_allocate_fail:
520 	OSAL_FREE(p_hwfn->p_dev, p_eq);
521 	return ECORE_NOMEM;
522 }
523 
524 void ecore_eq_setup(struct ecore_hwfn *p_hwfn)
525 {
526 	ecore_chain_reset(&p_hwfn->p_eq->chain);
527 }
528 
529 void ecore_eq_free(struct ecore_hwfn *p_hwfn)
530 {
531 	if (!p_hwfn->p_eq)
532 		return;
533 
534 	ecore_chain_free(p_hwfn->p_dev, &p_hwfn->p_eq->chain);
535 
536 	OSAL_FREE(p_hwfn->p_dev, p_hwfn->p_eq);
537 	p_hwfn->p_eq = OSAL_NULL;
538 }
539 
540 /***************************************************************************
541 * CQE API - manipulate EQ functionallity
542 ***************************************************************************/
543 static enum _ecore_status_t ecore_cqe_completion(struct ecore_hwfn *p_hwfn,
544 						 struct eth_slow_path_rx_cqe *cqe,
545 						 enum protocol_type protocol)
546 {
547 	if (IS_VF(p_hwfn->p_dev))
548 		return OSAL_VF_CQE_COMPLETION(p_hwfn, cqe, protocol);
549 
550 	/* @@@tmp - it's possible we'll eventually want to handle some
551 	 * actual commands that can arrive here, but for now this is only
552 	 * used to complete the ramrod using the echo value on the cqe
553 	 */
554 	return ecore_spq_completion(p_hwfn, cqe->echo, 0, OSAL_NULL);
555 }
556 
557 enum _ecore_status_t ecore_eth_cqe_completion(struct ecore_hwfn *p_hwfn,
558 					      struct eth_slow_path_rx_cqe *cqe)
559 {
560 	enum _ecore_status_t rc;
561 
562 	rc = ecore_cqe_completion(p_hwfn, cqe, PROTOCOLID_ETH);
563 	if (rc) {
564 		DP_NOTICE(p_hwfn, true,
565 			  "Failed to handle RXQ CQE [cmd 0x%02x]\n",
566 			  cqe->ramrod_cmd_id);
567 	}
568 
569 	return rc;
570 }
571 
572 /***************************************************************************
573  * Slow hwfn Queue (spq)
574  ***************************************************************************/
575 void ecore_spq_setup(struct ecore_hwfn *p_hwfn)
576 {
577 	struct ecore_spq *p_spq = p_hwfn->p_spq;
578 	struct ecore_spq_entry *p_virt = OSAL_NULL;
579 	struct core_db_data *p_db_data;
580 	void OSAL_IOMEM *db_addr;
581 	dma_addr_t p_phys = 0;
582 	u32 i, capacity;
583 	enum _ecore_status_t rc;
584 
585 	OSAL_LIST_INIT(&p_spq->pending);
586 	OSAL_LIST_INIT(&p_spq->completion_pending);
587 	OSAL_LIST_INIT(&p_spq->free_pool);
588 	OSAL_LIST_INIT(&p_spq->unlimited_pending);
589 	OSAL_SPIN_LOCK_INIT(&p_spq->lock);
590 
591 	/* SPQ empty pool */
592 	p_phys = p_spq->p_phys + OFFSETOF(struct ecore_spq_entry, ramrod);
593 	p_virt = p_spq->p_virt;
594 
595 	capacity = ecore_chain_get_capacity(&p_spq->chain);
596 	for (i = 0; i < capacity; i++) {
597 		DMA_REGPAIR_LE(p_virt->elem.data_ptr, p_phys);
598 
599 		OSAL_LIST_PUSH_TAIL(&p_virt->list, &p_spq->free_pool);
600 
601 		p_virt++;
602 		p_phys += sizeof(struct ecore_spq_entry);
603 	}
604 
605 	/* Statistics */
606 	p_spq->normal_count		= 0;
607 	p_spq->comp_count		= 0;
608 	p_spq->comp_sent_count		= 0;
609 	p_spq->unlimited_pending_count	= 0;
610 
611 	OSAL_MEM_ZERO(p_spq->p_comp_bitmap,
612 		      SPQ_COMP_BMAP_SIZE * sizeof(unsigned long));
613 	p_spq->comp_bitmap_idx = 0;
614 
615 	/* SPQ cid, cannot fail */
616 	ecore_cxt_acquire_cid(p_hwfn, PROTOCOLID_CORE, &p_spq->cid);
617 	ecore_spq_hw_initialize(p_hwfn, p_spq);
618 
619 	/* reset the chain itself */
620 	ecore_chain_reset(&p_spq->chain);
621 
622 	/* Initialize the address/data of the SPQ doorbell */
623 	p_spq->db_addr_offset = DB_ADDR(p_spq->cid, DQ_DEMS_LEGACY);
624 	p_db_data = &p_spq->db_data;
625 	OSAL_MEM_ZERO(p_db_data, sizeof(*p_db_data));
626 	SET_FIELD(p_db_data->params, CORE_DB_DATA_DEST, DB_DEST_XCM);
627 	SET_FIELD(p_db_data->params, CORE_DB_DATA_AGG_CMD, DB_AGG_CMD_MAX);
628 	SET_FIELD(p_db_data->params, CORE_DB_DATA_AGG_VAL_SEL,
629 		  DQ_XCM_CORE_SPQ_PROD_CMD);
630 	p_db_data->agg_flags = DQ_XCM_CORE_DQ_CF_CMD;
631 
632 	/* Register the SPQ doorbell with the doorbell recovery mechanism */
633 	db_addr = (void *)((u8 *)p_hwfn->doorbells + p_spq->db_addr_offset);
634 	rc = ecore_db_recovery_add(p_hwfn->p_dev, db_addr, &p_spq->db_data,
635 				   DB_REC_WIDTH_32B, DB_REC_KERNEL);
636 	if (rc != ECORE_SUCCESS)
637 		DP_INFO(p_hwfn,
638 			"Failed to register the SPQ doorbell with the doorbell recovery mechanism\n");
639 }
640 
641 enum _ecore_status_t ecore_spq_alloc(struct ecore_hwfn *p_hwfn)
642 {
643 	struct ecore_spq_entry *p_virt = OSAL_NULL;
644 	struct ecore_spq *p_spq = OSAL_NULL;
645 	dma_addr_t p_phys = 0;
646 	u32 capacity;
647 
648 	/* SPQ struct */
649 	p_spq =
650 	    OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, sizeof(struct ecore_spq));
651 	if (!p_spq) {
652 		DP_NOTICE(p_hwfn, false, "Failed to allocate `struct ecore_spq'\n");
653 		return ECORE_NOMEM;
654 	}
655 
656 	/* SPQ ring  */
657 	if (ecore_chain_alloc(p_hwfn->p_dev,
658 			      ECORE_CHAIN_USE_TO_PRODUCE,
659 			      ECORE_CHAIN_MODE_SINGLE,
660 			      ECORE_CHAIN_CNT_TYPE_U16,
661 			      0, /* N/A when the mode is SINGLE */
662 			      sizeof(struct slow_path_element),
663 			      &p_spq->chain, OSAL_NULL)) {
664 		DP_NOTICE(p_hwfn, false, "Failed to allocate spq chain\n");
665 		goto spq_allocate_fail;
666 	}
667 
668 	/* allocate and fill the SPQ elements (incl. ramrod data list) */
669 	capacity = ecore_chain_get_capacity(&p_spq->chain);
670 	p_virt = OSAL_DMA_ALLOC_COHERENT(p_hwfn->p_dev, &p_phys,
671 					 capacity *
672 					 sizeof(struct ecore_spq_entry));
673 	if (!p_virt) {
674 		goto spq_allocate_fail;
675 	}
676 
677 	p_spq->p_virt = p_virt;
678 	p_spq->p_phys = p_phys;
679 
680 #ifdef CONFIG_ECORE_LOCK_ALLOC
681 	if (OSAL_SPIN_LOCK_ALLOC(p_hwfn, &p_spq->lock))
682 		goto spq_allocate_fail;
683 #endif
684 
685 	p_hwfn->p_spq = p_spq;
686 	return ECORE_SUCCESS;
687 
688 spq_allocate_fail:
689 	ecore_chain_free(p_hwfn->p_dev, &p_spq->chain);
690 	OSAL_FREE(p_hwfn->p_dev, p_spq);
691 	return ECORE_NOMEM;
692 }
693 
694 void ecore_spq_free(struct ecore_hwfn *p_hwfn)
695 {
696 	struct ecore_spq *p_spq = p_hwfn->p_spq;
697 	void OSAL_IOMEM *db_addr;
698 	u32 capacity;
699 
700 	if (!p_spq)
701 		return;
702 
703 	/* Delete the SPQ doorbell from the doorbell recovery mechanism */
704 	db_addr = (void *)((u8 *)p_hwfn->doorbells + p_spq->db_addr_offset);
705 	ecore_db_recovery_del(p_hwfn->p_dev, db_addr, &p_spq->db_data);
706 
707 	if (p_spq->p_virt) {
708 		capacity = ecore_chain_get_capacity(&p_spq->chain);
709 		OSAL_DMA_FREE_COHERENT(p_hwfn->p_dev,
710 				       p_spq->p_virt,
711 				       p_spq->p_phys,
712 				       capacity *
713 				       sizeof(struct ecore_spq_entry));
714 	}
715 
716 	ecore_chain_free(p_hwfn->p_dev, &p_spq->chain);
717 #ifdef CONFIG_ECORE_LOCK_ALLOC
718 	OSAL_SPIN_LOCK_DEALLOC(&p_spq->lock);
719 #endif
720 
721 	OSAL_FREE(p_hwfn->p_dev, p_spq);
722 	p_hwfn->p_spq = OSAL_NULL;
723 }
724 
725 enum _ecore_status_t ecore_spq_get_entry(struct ecore_hwfn *p_hwfn,
726 					 struct ecore_spq_entry **pp_ent)
727 {
728 	struct ecore_spq *p_spq = p_hwfn->p_spq;
729 	struct ecore_spq_entry *p_ent = OSAL_NULL;
730 	enum _ecore_status_t rc = ECORE_SUCCESS;
731 
732 	OSAL_SPIN_LOCK(&p_spq->lock);
733 
734 	if (OSAL_LIST_IS_EMPTY(&p_spq->free_pool)) {
735 		p_ent = OSAL_ZALLOC(p_hwfn->p_dev, GFP_ATOMIC, sizeof(*p_ent));
736 		if (!p_ent) {
737 			DP_NOTICE(p_hwfn, false, "Failed to allocate an SPQ entry for a pending ramrod\n");
738 			rc = ECORE_NOMEM;
739 			goto out_unlock;
740 		}
741 		p_ent->queue = &p_spq->unlimited_pending;
742 	} else {
743 		p_ent = OSAL_LIST_FIRST_ENTRY(&p_spq->free_pool,
744 					      struct ecore_spq_entry,
745 					      list);
746 		OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->free_pool);
747 		p_ent->queue = &p_spq->pending;
748 	}
749 
750 	*pp_ent = p_ent;
751 
752 out_unlock:
753 	OSAL_SPIN_UNLOCK(&p_spq->lock);
754 	return rc;
755 }
756 
757 /* Locked variant; Should be called while the SPQ lock is taken */
758 static void __ecore_spq_return_entry(struct ecore_hwfn *p_hwfn,
759 			      struct ecore_spq_entry *p_ent)
760 {
761 	OSAL_LIST_PUSH_TAIL(&p_ent->list, &p_hwfn->p_spq->free_pool);
762 }
763 
764 void ecore_spq_return_entry(struct ecore_hwfn *p_hwfn,
765 			    struct ecore_spq_entry *p_ent)
766 {
767 	OSAL_SPIN_LOCK(&p_hwfn->p_spq->lock);
768 	__ecore_spq_return_entry(p_hwfn, p_ent);
769 	OSAL_SPIN_UNLOCK(&p_hwfn->p_spq->lock);
770 }
771 
772 /**
773  * @brief ecore_spq_add_entry - adds a new entry to the pending
774  *        list. Should be used while lock is being held.
775  *
776  * Addes an entry to the pending list is there is room (en empty
777  * element is avaliable in the free_pool), or else places the
778  * entry in the unlimited_pending pool.
779  *
780  * @param p_hwfn
781  * @param p_ent
782  * @param priority
783  *
784  * @return enum _ecore_status_t
785  */
786 static enum _ecore_status_t ecore_spq_add_entry(struct ecore_hwfn *p_hwfn,
787 						struct ecore_spq_entry *p_ent,
788 						enum spq_priority priority)
789 {
790 	struct ecore_spq	*p_spq	= p_hwfn->p_spq;
791 
792 	if (p_ent->queue == &p_spq->unlimited_pending) {
793 		if (OSAL_LIST_IS_EMPTY(&p_spq->free_pool)) {
794 			OSAL_LIST_PUSH_TAIL(&p_ent->list,
795 					    &p_spq->unlimited_pending);
796 			p_spq->unlimited_pending_count++;
797 
798 			return ECORE_SUCCESS;
799 
800 		} else {
801 			struct ecore_spq_entry *p_en2;
802 
803 			p_en2 = OSAL_LIST_FIRST_ENTRY(&p_spq->free_pool,
804 						     struct ecore_spq_entry,
805 						     list);
806 			OSAL_LIST_REMOVE_ENTRY(&p_en2->list, &p_spq->free_pool);
807 
808 			/* Copy the ring element physical pointer to the new
809 			 * entry, since we are about to override the entire ring
810 			 * entry and don't want to lose the pointer.
811 			 */
812 			p_ent->elem.data_ptr = p_en2->elem.data_ptr;
813 
814 			*p_en2 = *p_ent;
815 
816 			/* EBLOCK responsible to free the allocated p_ent */
817 			if (p_ent->comp_mode != ECORE_SPQ_MODE_EBLOCK)
818 				OSAL_FREE(p_hwfn->p_dev, p_ent);
819 
820 			p_ent = p_en2;
821 		}
822 	}
823 
824 	/* entry is to be placed in 'pending' queue */
825 	switch (priority) {
826 	case ECORE_SPQ_PRIORITY_NORMAL:
827 		OSAL_LIST_PUSH_TAIL(&p_ent->list, &p_spq->pending);
828 		p_spq->normal_count++;
829 		break;
830 	case ECORE_SPQ_PRIORITY_HIGH:
831 		OSAL_LIST_PUSH_HEAD(&p_ent->list, &p_spq->pending);
832 		p_spq->high_count++;
833 		break;
834 	default:
835 		return ECORE_INVAL;
836 	}
837 
838 	return ECORE_SUCCESS;
839 }
840 
841 /***************************************************************************
842  * Accessor
843  ***************************************************************************/
844 
845 u32 ecore_spq_get_cid(struct ecore_hwfn *p_hwfn)
846 {
847 	if (!p_hwfn->p_spq) {
848 		return 0xffffffff;	/* illegal */
849 	}
850 	return p_hwfn->p_spq->cid;
851 }
852 
853 /***************************************************************************
854  * Posting new Ramrods
855  ***************************************************************************/
856 
857 static enum _ecore_status_t ecore_spq_post_list(struct ecore_hwfn *p_hwfn,
858 						osal_list_t	  *head,
859 						u32		  keep_reserve)
860 {
861 	struct ecore_spq	*p_spq = p_hwfn->p_spq;
862 	enum _ecore_status_t	rc;
863 
864 	/* TODO - implementation might be wasteful; will always keep room
865 	 * for an additional high priority ramrod (even if one is already
866 	 * pending FW)
867 	 */
868 	while (ecore_chain_get_elem_left(&p_spq->chain) > keep_reserve &&
869 	       !OSAL_LIST_IS_EMPTY(head)) {
870 		struct ecore_spq_entry  *p_ent =
871 		    OSAL_LIST_FIRST_ENTRY(head, struct ecore_spq_entry, list);
872 		if (p_ent != OSAL_NULL) {
873 #if defined(_NTDDK_)
874 #pragma warning(suppress : 6011 28182)
875 #endif
876 			OSAL_LIST_REMOVE_ENTRY(&p_ent->list, head);
877 			OSAL_LIST_PUSH_TAIL(&p_ent->list, &p_spq->completion_pending);
878 			p_spq->comp_sent_count++;
879 
880 			rc = ecore_spq_hw_post(p_hwfn, p_spq, p_ent);
881 			if (rc) {
882 				OSAL_LIST_REMOVE_ENTRY(&p_ent->list,
883 									&p_spq->completion_pending);
884 				__ecore_spq_return_entry(p_hwfn, p_ent);
885 				return rc;
886 			}
887 		}
888 	}
889 
890 	return ECORE_SUCCESS;
891 }
892 
893 enum _ecore_status_t ecore_spq_pend_post(struct ecore_hwfn *p_hwfn)
894 {
895 	struct ecore_spq *p_spq = p_hwfn->p_spq;
896 	struct ecore_spq_entry *p_ent = OSAL_NULL;
897 
898 	while (!OSAL_LIST_IS_EMPTY(&p_spq->free_pool))
899 	{
900 		if (OSAL_LIST_IS_EMPTY(&p_spq->unlimited_pending))
901 			break;
902 
903 		p_ent = OSAL_LIST_FIRST_ENTRY(&p_spq->unlimited_pending,
904 					      struct ecore_spq_entry,
905 					      list);
906 		if (!p_ent)
907 			return ECORE_INVAL;
908 
909 #if defined(_NTDDK_)
910 #pragma warning(suppress : 6011)
911 #endif
912 		OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->unlimited_pending);
913 
914 		ecore_spq_add_entry(p_hwfn, p_ent, p_ent->priority);
915 	}
916 
917 	return ecore_spq_post_list(p_hwfn, &p_spq->pending,
918 				   SPQ_HIGH_PRI_RESERVE_DEFAULT);
919 }
920 
921 enum _ecore_status_t ecore_spq_post(struct ecore_hwfn		*p_hwfn,
922 				    struct ecore_spq_entry	*p_ent,
923 				    u8                          *fw_return_code)
924 {
925 	enum _ecore_status_t	rc = ECORE_SUCCESS;
926 	struct ecore_spq	*p_spq = p_hwfn ? p_hwfn->p_spq : OSAL_NULL;
927 	bool			b_ret_ent = true;
928 
929 	if (!p_hwfn)
930 		return ECORE_INVAL;
931 
932 	if (!p_ent) {
933 		DP_NOTICE(p_hwfn, true, "Got a NULL pointer\n");
934 		return ECORE_INVAL;
935 	}
936 
937 	if (p_hwfn->p_dev->recov_in_prog) {
938 		DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
939 			   "Recovery is in progress -> skip spq post [cmd %02x protocol %02x]\n",
940 			   p_ent->elem.hdr.cmd_id, p_ent->elem.hdr.protocol_id);
941 		/* Return success to let the flows to be completed successfully
942 		 * w/o any error handling.
943 		 */
944 		return ECORE_SUCCESS;
945 	}
946 
947 	OSAL_SPIN_LOCK(&p_spq->lock);
948 
949 	/* Complete the entry */
950 	rc = ecore_spq_fill_entry(p_hwfn, p_ent);
951 
952 	/* Check return value after LOCK is taken for cleaner error flow */
953 	if (rc)
954 		goto spq_post_fail;
955 
956 	/* Add the request to the pending queue */
957 	rc = ecore_spq_add_entry(p_hwfn, p_ent, p_ent->priority);
958 	if (rc)
959 		goto spq_post_fail;
960 
961 	rc = ecore_spq_pend_post(p_hwfn);
962 	if (rc) {
963 		/* Since it's possible that pending failed for a different
964 		 * entry [although unlikely], the failed entry was already
965 		 * dealt with; No need to return it here.
966 		 */
967 		b_ret_ent = false;
968 		goto spq_post_fail;
969 	}
970 
971 	OSAL_SPIN_UNLOCK(&p_spq->lock);
972 
973 	if (p_ent->comp_mode == ECORE_SPQ_MODE_EBLOCK) {
974 		/* For entries in ECORE BLOCK mode, the completion code cannot
975 		 * perform the necessary cleanup - if it did, we couldn't
976 		 * access p_ent here to see whether it's successful or not.
977 		 * Thus, after gaining the answer perform the cleanup here.
978 		 */
979 		rc = ecore_spq_block(p_hwfn, p_ent, fw_return_code,
980 				     p_ent->queue == &p_spq->unlimited_pending);
981 
982 		if (p_ent->queue == &p_spq->unlimited_pending) {
983 			/* This is an allocated p_ent which does not need to
984 			 * return to pool.
985 			 */
986 			OSAL_FREE(p_hwfn->p_dev, p_ent);
987 
988 			/* TBD: handle error flow and remove p_ent from
989 			 * completion pending
990 			 */
991 			return rc;
992 		}
993 
994 		if (rc)
995 			goto spq_post_fail2;
996 
997 		/* return to pool */
998 		ecore_spq_return_entry(p_hwfn, p_ent);
999 	}
1000 	return rc;
1001 
1002 spq_post_fail2:
1003 	OSAL_SPIN_LOCK(&p_spq->lock);
1004 	OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->completion_pending);
1005 	ecore_chain_return_produced(&p_spq->chain);
1006 
1007 spq_post_fail:
1008 	/* return to the free pool */
1009 	if (b_ret_ent)
1010 		__ecore_spq_return_entry(p_hwfn, p_ent);
1011 	OSAL_SPIN_UNLOCK(&p_spq->lock);
1012 
1013 	return rc;
1014 }
1015 
1016 enum _ecore_status_t ecore_spq_completion(struct ecore_hwfn *p_hwfn,
1017 					  __le16 echo,
1018 					  u8 fw_return_code,
1019 					  union event_ring_data	*p_data)
1020 {
1021 	struct ecore_spq	*p_spq;
1022 	struct ecore_spq_entry	*p_ent = OSAL_NULL;
1023 	struct ecore_spq_entry	*tmp;
1024 	struct ecore_spq_entry	*found = OSAL_NULL;
1025 
1026 	if (!p_hwfn) {
1027 		return ECORE_INVAL;
1028 	}
1029 
1030 	p_spq = p_hwfn->p_spq;
1031 	if (!p_spq) {
1032 		return ECORE_INVAL;
1033 	}
1034 
1035 	OSAL_SPIN_LOCK(&p_spq->lock);
1036 	OSAL_LIST_FOR_EACH_ENTRY_SAFE(p_ent,
1037 				      tmp,
1038 				      &p_spq->completion_pending,
1039 				      list,
1040 				      struct ecore_spq_entry) {
1041 		if (p_ent->elem.hdr.echo == echo) {
1042 			OSAL_LIST_REMOVE_ENTRY(&p_ent->list,
1043 					       &p_spq->completion_pending);
1044 
1045 			/* Avoid overriding of SPQ entries when getting
1046 			 * out-of-order completions, by marking the completions
1047 			 * in a bitmap and increasing the chain consumer only
1048 			 * for the first successive completed entries.
1049 			 */
1050 			SPQ_COMP_BMAP_SET_BIT(p_spq, echo);
1051 			while (SPQ_COMP_BMAP_TEST_BIT(p_spq,
1052 						      p_spq->comp_bitmap_idx)) {
1053 				SPQ_COMP_BMAP_CLEAR_BIT(p_spq,
1054 							p_spq->comp_bitmap_idx);
1055 				p_spq->comp_bitmap_idx++;
1056 				ecore_chain_return_produced(&p_spq->chain);
1057 			}
1058 
1059 			p_spq->comp_count++;
1060 			found = p_ent;
1061 			break;
1062 		}
1063 
1064 		/* This is debug and should be relatively uncommon - depends
1065 		 * on scenarios which have mutliple per-PF sent ramrods.
1066 		 */
1067 		DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
1068 			   "Got completion for echo %04x - doesn't match echo %04x in completion pending list\n",
1069 			   OSAL_LE16_TO_CPU(echo),
1070 			   OSAL_LE16_TO_CPU(p_ent->elem.hdr.echo));
1071 	}
1072 
1073 	/* Release lock before callback, as callback may post
1074 	 * an additional ramrod.
1075 	 */
1076 	OSAL_SPIN_UNLOCK(&p_spq->lock);
1077 
1078 	if (!found) {
1079 		DP_NOTICE(p_hwfn, true,
1080 			  "Failed to find an entry this EQE [echo %04x] completes\n",
1081 			  OSAL_LE16_TO_CPU(echo));
1082 		return ECORE_EXISTS;
1083 	}
1084 
1085 	DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
1086 		   "Complete EQE [echo %04x]: func %p cookie %p)\n",
1087 		   OSAL_LE16_TO_CPU(echo),
1088 		   p_ent->comp_cb.function, p_ent->comp_cb.cookie);
1089 	if (found->comp_cb.function)
1090 		found->comp_cb.function(p_hwfn, found->comp_cb.cookie, p_data,
1091 					fw_return_code);
1092 	else
1093 		DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ, "Got a completion without a callback function\n");
1094 
1095 	if ((found->comp_mode != ECORE_SPQ_MODE_EBLOCK) ||
1096 	    (found->queue == &p_spq->unlimited_pending))
1097 		/* EBLOCK  is responsible for returning its own entry into the
1098 		 * free list, unless it originally added the entry into the
1099 		 * unlimited pending list.
1100 		 */
1101 		ecore_spq_return_entry(p_hwfn, found);
1102 
1103 	return ECORE_SUCCESS;
1104 }
1105 
1106 enum _ecore_status_t ecore_consq_alloc(struct ecore_hwfn *p_hwfn)
1107 {
1108 	struct ecore_consq *p_consq;
1109 
1110 	/* Allocate ConsQ struct */
1111 	p_consq = OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, sizeof(*p_consq));
1112 	if (!p_consq) {
1113 		DP_NOTICE(p_hwfn, false,
1114 			  "Failed to allocate `struct ecore_consq'\n");
1115 		return ECORE_NOMEM;
1116 	}
1117 
1118 	/* Allocate and initialize EQ chain*/
1119 	if (ecore_chain_alloc(p_hwfn->p_dev,
1120 			      ECORE_CHAIN_USE_TO_PRODUCE,
1121 			      ECORE_CHAIN_MODE_PBL,
1122 			      ECORE_CHAIN_CNT_TYPE_U16,
1123 			      ECORE_CHAIN_PAGE_SIZE/0x80,
1124 			      0x80,
1125 			      &p_consq->chain, OSAL_NULL) != ECORE_SUCCESS) {
1126 		DP_NOTICE(p_hwfn, false, "Failed to allocate consq chain");
1127 		goto consq_allocate_fail;
1128 	}
1129 
1130 	p_hwfn->p_consq = p_consq;
1131 	return ECORE_SUCCESS;
1132 
1133 consq_allocate_fail:
1134 	OSAL_FREE(p_hwfn->p_dev, p_consq);
1135 	return ECORE_NOMEM;
1136 }
1137 
1138 void ecore_consq_setup(struct ecore_hwfn *p_hwfn)
1139 {
1140 	ecore_chain_reset(&p_hwfn->p_consq->chain);
1141 }
1142 
1143 void ecore_consq_free(struct ecore_hwfn *p_hwfn)
1144 {
1145 	if (!p_hwfn->p_consq)
1146 		return;
1147 
1148 	ecore_chain_free(p_hwfn->p_dev, &p_hwfn->p_consq->chain);
1149 
1150 	OSAL_FREE(p_hwfn->p_dev, p_hwfn->p_consq);
1151 	p_hwfn->p_consq = OSAL_NULL;
1152 }
1153 
1154 #ifdef _NTDDK_
1155 #pragma warning(pop)
1156 #endif
1157