xref: /illumos-gate/usr/src/uts/common/io/qede/579xx/drivers/ecore/ecore_spq.c (revision 04443fde3a2688e592571a7bcca114860cf07bb3)
1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, v.1,  (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://opensource.org/licenses/CDDL-1.0.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 
22 /*
23 * Copyright 2014-2017 Cavium, Inc.
24 * The contents of this file are subject to the terms of the Common Development
25 * and Distribution License, v.1,  (the "License").
26 
27 * You may not use this file except in compliance with the License.
28 
29 * You can obtain a copy of the License at available
30 * at http://opensource.org/licenses/CDDL-1.0
31 
32 * See the License for the specific language governing permissions and
33 * limitations under the License.
34 */
35 
36 #include "bcm_osal.h"
37 #include "reg_addr.h"
38 #include "ecore_gtt_reg_addr.h"
39 #include "ecore_hsi_common.h"
40 #include "ecore.h"
41 #include "ecore_sp_api.h"
42 #include "ecore_spq.h"
43 #include "ecore_iro.h"
44 #include "ecore_init_fw_funcs.h"
45 #include "ecore_cxt.h"
46 #include "ecore_int.h"
47 #include "ecore_dev_api.h"
48 #include "ecore_mcp.h"
49 #ifdef CONFIG_ECORE_ROCE
50 #include "ecore_roce.h"
51 #endif
52 #include "ecore_hw.h"
53 #include "ecore_sriov.h"
54 #ifdef CONFIG_ECORE_ISCSI
55 #include "ecore_iscsi.h"
56 #include "ecore_ooo.h"
57 #endif
58 
59 /***************************************************************************
60  * Structures & Definitions
61  ***************************************************************************/
62 
63 #define SPQ_HIGH_PRI_RESERVE_DEFAULT	(1)
64 
65 #define SPQ_BLOCK_DELAY_MAX_ITER	(10)
66 #define SPQ_BLOCK_DELAY_US		(10)
67 #define SPQ_BLOCK_SLEEP_MAX_ITER	(1000)
68 #define SPQ_BLOCK_SLEEP_MS		(5)
69 
70 #ifndef REMOVE_DBG
71 /***************************************************************************
72  * Debug [iSCSI] tool
73  ***************************************************************************/
ecore_iscsi_eq_dump(struct ecore_hwfn * p_hwfn,struct event_ring_entry * p_eqe)74 static void ecore_iscsi_eq_dump(struct ecore_hwfn *p_hwfn,
75 				struct event_ring_entry *p_eqe)
76 {
77 	if (p_eqe->opcode >= MAX_ISCSI_EQE_OPCODE) {
78 		DP_NOTICE(p_hwfn, false, "Unknown iSCSI EQ: %x\n",
79 			  p_eqe->opcode);
80 	}
81 
82 	switch (p_eqe->opcode) {
83 	case ISCSI_EVENT_TYPE_INIT_FUNC:
84 	case ISCSI_EVENT_TYPE_DESTROY_FUNC:
85 		/* NOPE */
86 		break;
87 	case ISCSI_EVENT_TYPE_OFFLOAD_CONN:
88 	case ISCSI_EVENT_TYPE_TERMINATE_CONN:
89 		DP_VERBOSE(p_hwfn, ECORE_MSG_STORAGE,
90 			   "iSCSI EQE: Port %x, Op %x, echo %x, FWret %x, CID %x, ConnID %x, ERR %x\n",
91 			   p_hwfn->port_id, p_eqe->opcode,
92 			   OSAL_LE16_TO_CPU(p_eqe->echo),
93 			   p_eqe->fw_return_code,
94 			   OSAL_LE32_TO_CPU(p_eqe->data.iscsi_info.cid),
95 			   OSAL_LE16_TO_CPU(p_eqe->data.iscsi_info.conn_id),
96 			   p_eqe->data.iscsi_info.error_code);
97 		break;
98 	case ISCSI_EVENT_TYPE_UPDATE_CONN:
99 	case ISCSI_EVENT_TYPE_CLEAR_SQ:
100 	case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE:
101 	case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE:
102 	case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD:
103 	case ISCSI_EVENT_TYPE_ASYN_CLOSE_RCVD:
104 	case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD:
105 	case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME:
106 	case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT:
107 	case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT:
108 	case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2:
109 	case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR:
110 	case ISCSI_EVENT_TYPE_TCP_CONN_ERROR:
111 	default:
112 		/* NOPE */
113 		break;
114 	}
115 }
116 #endif
117 
118 /***************************************************************************
119  * Blocking Imp. (BLOCK/EBLOCK mode)
120  ***************************************************************************/
ecore_spq_blocking_cb(struct ecore_hwfn * p_hwfn,void * cookie,union event_ring_data * data,u8 fw_return_code)121 static void ecore_spq_blocking_cb(struct ecore_hwfn *p_hwfn,
122 					void                  *cookie,
123 					union event_ring_data *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 
__ecore_spq_block(struct ecore_hwfn * p_hwfn,struct ecore_spq_entry * p_ent,u8 * p_fw_ret,bool sleep_between_iter)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 
149 	while (iter_cnt--) {
150 		OSAL_POLL_MODE_DPC(p_hwfn);
151 		OSAL_SMP_RMB(p_hwfn->p_dev);
152 		if (comp_done->done == 1) {
153 			if (p_fw_ret)
154 				*p_fw_ret = comp_done->fw_return_code;
155 			return ECORE_SUCCESS;
156 		}
157 
158 		if (sleep_between_iter)
159 			OSAL_MSLEEP(SPQ_BLOCK_SLEEP_MS);
160 		else
161 			OSAL_UDELAY(SPQ_BLOCK_DELAY_US);
162 	}
163 
164 	return ECORE_TIMEOUT;
165 }
166 
ecore_spq_block(struct ecore_hwfn * p_hwfn,struct ecore_spq_entry * p_ent,u8 * p_fw_ret,bool skip_quick_poll)167 static enum _ecore_status_t ecore_spq_block(struct ecore_hwfn *p_hwfn,
168 					    struct ecore_spq_entry *p_ent,
169 					    u8 *p_fw_ret, bool skip_quick_poll)
170 {
171 	struct ecore_spq_comp_done *comp_done;
172 	enum _ecore_status_t rc;
173 
174 	/* A relatively short polling period w/o sleeping, to allow the FW to
175 	 * complete the ramrod and thus possibly to avoid the following sleeps.
176 	 */
177 	if (!skip_quick_poll) {
178 		rc = __ecore_spq_block(p_hwfn, p_ent, p_fw_ret, false);
179 		if (rc == ECORE_SUCCESS)
180 			return ECORE_SUCCESS;
181 	}
182 
183 	/* Move to polling with a sleeping period between iterations */
184 	rc = __ecore_spq_block(p_hwfn, p_ent, p_fw_ret, true);
185 	if (rc == ECORE_SUCCESS)
186 		return ECORE_SUCCESS;
187 
188 	DP_INFO(p_hwfn, "Ramrod is stuck, requesting MCP drain\n");
189 	rc = ecore_mcp_drain(p_hwfn, p_hwfn->p_main_ptt);
190 	if (rc != ECORE_SUCCESS) {
191 		DP_NOTICE(p_hwfn, true, "MCP drain failed\n");
192 		goto err;
193 	}
194 
195 	/* Retry after drain */
196 	rc = __ecore_spq_block(p_hwfn, p_ent, p_fw_ret, true);
197 	if (rc == ECORE_SUCCESS)
198 		return ECORE_SUCCESS;
199 
200 	comp_done = (struct ecore_spq_comp_done *)p_ent->comp_cb.cookie;
201 	if (comp_done->done == 1) {
202 		if (p_fw_ret)
203 			*p_fw_ret = comp_done->fw_return_code;
204 		return ECORE_SUCCESS;
205 	}
206 err:
207 	DP_NOTICE(p_hwfn, true,
208 		  "Ramrod is stuck [CID %08x cmd %02x protocol %02x echo %04x]\n",
209 		  OSAL_LE32_TO_CPU(p_ent->elem.hdr.cid),
210 		  p_ent->elem.hdr.cmd_id, p_ent->elem.hdr.protocol_id,
211 		  OSAL_LE16_TO_CPU(p_ent->elem.hdr.echo));
212 
213 	ecore_hw_err_notify(p_hwfn, ECORE_HW_ERR_RAMROD_FAIL);
214 
215 	return ECORE_BUSY;
216 }
217 
218 /***************************************************************************
219  * SPQ entries inner API
220  ***************************************************************************/
ecore_spq_fill_entry(struct ecore_hwfn * p_hwfn,struct ecore_spq_entry * p_ent)221 static enum _ecore_status_t ecore_spq_fill_entry(struct ecore_hwfn *p_hwfn,
222 						 struct ecore_spq_entry *p_ent)
223 {
224 	p_ent->flags = 0;
225 
226 	switch (p_ent->comp_mode) {
227 	case ECORE_SPQ_MODE_EBLOCK:
228 	case ECORE_SPQ_MODE_BLOCK:
229 		p_ent->comp_cb.function = ecore_spq_blocking_cb;
230 		break;
231 	case ECORE_SPQ_MODE_CB:
232 		break;
233 	default:
234 		DP_NOTICE(p_hwfn, true, "Unknown SPQE completion mode %d\n",
235 			  p_ent->comp_mode);
236 		return ECORE_INVAL;
237 	}
238 
239 	DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
240 		   "Ramrod header: [CID 0x%08x CMD 0x%02x protocol 0x%02x] Data pointer: [%08x:%08x] Completion Mode: %s\n",
241 		   p_ent->elem.hdr.cid, p_ent->elem.hdr.cmd_id,
242 		   p_ent->elem.hdr.protocol_id,
243 		   p_ent->elem.data_ptr.hi, p_ent->elem.data_ptr.lo,
244 		   D_TRINE(p_ent->comp_mode, ECORE_SPQ_MODE_EBLOCK,
245 			   ECORE_SPQ_MODE_BLOCK, "MODE_EBLOCK", "MODE_BLOCK",
246 			   "MODE_CB"));
247 
248 	return ECORE_SUCCESS;
249 }
250 
251 /***************************************************************************
252  * HSI access
253  ***************************************************************************/
ecore_spq_hw_initialize(struct ecore_hwfn * p_hwfn,struct ecore_spq * p_spq)254 static void ecore_spq_hw_initialize(struct ecore_hwfn *p_hwfn,
255 				    struct ecore_spq  *p_spq)
256 {
257 	struct ecore_cxt_info cxt_info;
258 	struct core_conn_context *p_cxt;
259 	enum _ecore_status_t rc;
260 	u16 physical_q;
261 
262 	cxt_info.iid = p_spq->cid;
263 
264 	rc = ecore_cxt_get_cid_info(p_hwfn, &cxt_info);
265 
266 	if (rc < 0) {
267 		DP_NOTICE(p_hwfn, true, "Cannot find context info for cid=%d\n",
268 			  p_spq->cid);
269 		return;
270 	}
271 
272 	p_cxt = cxt_info.p_cxt;
273 
274 	/* @@@TBD we zero the context until we have ilt_reset implemented. */
275 	OSAL_MEM_ZERO(p_cxt, sizeof(*p_cxt));
276 
277 	if (ECORE_IS_BB(p_hwfn->p_dev) || ECORE_IS_AH(p_hwfn->p_dev)) {
278 		SET_FIELD(p_cxt->xstorm_ag_context.flags10,
279 			  E4_XSTORM_CORE_CONN_AG_CTX_DQ_CF_EN, 1);
280 		SET_FIELD(p_cxt->xstorm_ag_context.flags1,
281 			  E4_XSTORM_CORE_CONN_AG_CTX_DQ_CF_ACTIVE, 1);
282 		/*SET_FIELD(p_cxt->xstorm_ag_context.flags10,
283 			  E4_XSTORM_CORE_CONN_AG_CTX_SLOW_PATH_EN, 1);*/
284 		SET_FIELD(p_cxt->xstorm_ag_context.flags9,
285 			  E4_XSTORM_CORE_CONN_AG_CTX_CONSOLID_PROD_CF_EN, 1);
286 	} else { /* E5 */
287 		ECORE_E5_MISSING_CODE;
288 	}
289 
290 	/* CDU validation - FIXME currently disabled */
291 
292 	/* QM physical queue */
293 	physical_q = ecore_get_cm_pq_idx(p_hwfn, PQ_FLAGS_LB);
294 	p_cxt->xstorm_ag_context.physical_q0 = OSAL_CPU_TO_LE16(physical_q);
295 
296 	p_cxt->xstorm_st_context.spq_base_lo =
297 		DMA_LO_LE(p_spq->chain.p_phys_addr);
298 	p_cxt->xstorm_st_context.spq_base_hi =
299 		DMA_HI_LE(p_spq->chain.p_phys_addr);
300 
301 	DMA_REGPAIR_LE(p_cxt->xstorm_st_context.consolid_base_addr,
302 		       p_hwfn->p_consq->chain.p_phys_addr);
303 }
304 
ecore_spq_hw_post(struct ecore_hwfn * p_hwfn,struct ecore_spq * p_spq,struct ecore_spq_entry * p_ent)305 static enum _ecore_status_t ecore_spq_hw_post(struct ecore_hwfn		*p_hwfn,
306 					      struct ecore_spq		*p_spq,
307 					      struct ecore_spq_entry	*p_ent)
308 {
309 	struct ecore_chain *p_chain = &p_hwfn->p_spq->chain;
310 	u16 echo = ecore_chain_get_prod_idx(p_chain);
311 	struct slow_path_element *elem;
312 	struct core_db_data db;
313 
314 	p_ent->elem.hdr.echo = OSAL_CPU_TO_LE16(echo);
315 	elem = ecore_chain_produce(p_chain);
316 	if (!elem) {
317 		DP_NOTICE(p_hwfn, true, "Failed to produce from SPQ chain\n");
318 		return ECORE_INVAL;
319 	}
320 
321 	*elem = p_ent->elem; /* struct assignment */
322 
323 	/* send a doorbell on the slow hwfn session */
324 	OSAL_MEMSET(&db, 0, sizeof(db));
325 	SET_FIELD(db.params, CORE_DB_DATA_DEST, DB_DEST_XCM);
326 	SET_FIELD(db.params, CORE_DB_DATA_AGG_CMD, DB_AGG_CMD_SET);
327 	SET_FIELD(db.params, CORE_DB_DATA_AGG_VAL_SEL, DQ_XCM_CORE_SPQ_PROD_CMD);
328 	db.agg_flags = DQ_XCM_CORE_DQ_CF_CMD;
329 	db.spq_prod = OSAL_CPU_TO_LE16(ecore_chain_get_prod_idx(p_chain));
330 
331 	/* make sure the SPQE is updated before the doorbell */
332 	OSAL_WMB(p_hwfn->p_dev);
333 
334 	DOORBELL(p_hwfn, DB_ADDR(p_spq->cid, DQ_DEMS_LEGACY), *(u32 *)&db);
335 
336 	/* make sure doorbell is rang */
337 	OSAL_WMB(p_hwfn->p_dev);
338 
339 	DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
340 		   "Doorbelled [0x%08x, CID 0x%08x] with Flags: %02x agg_params: %02x, prod: %04x\n",
341 		   DB_ADDR(p_spq->cid, DQ_DEMS_LEGACY), p_spq->cid, db.params,
342 		   db.agg_flags, ecore_chain_get_prod_idx(p_chain));
343 
344 	return ECORE_SUCCESS;
345 }
346 
347 /***************************************************************************
348  * Asynchronous events
349  ***************************************************************************/
350 
351 static enum _ecore_status_t
ecore_async_event_completion(struct ecore_hwfn * p_hwfn,struct event_ring_entry * p_eqe)352 ecore_async_event_completion(struct ecore_hwfn *p_hwfn,
353 			     struct event_ring_entry *p_eqe)
354 {
355 	switch (p_eqe->protocol_id) {
356 #ifdef CONFIG_ECORE_ROCE
357 	case PROTOCOLID_ROCE:
358 	{
359 		ecore_roce_async_event(p_hwfn,
360 				       p_eqe->opcode,
361 				       &p_eqe->data.rdma_data);
362 		return ECORE_SUCCESS;
363 	}
364 #ifdef CONFIG_ECORE_IWARP
365 	case PROTOCOLID_IWARP:
366 	{
367 		ecore_iwarp_async_event(p_hwfn,
368 					p_eqe->opcode,
369 					&p_eqe->data.rdma_data.async_handle,
370 					p_eqe->fw_return_code);
371 		return ECORE_SUCCESS;
372 	}
373 #endif
374 #endif
375 	case PROTOCOLID_COMMON:
376 		return ecore_sriov_eqe_event(p_hwfn,
377 					     p_eqe->opcode,
378 					     p_eqe->echo,
379 					     &p_eqe->data);
380 #ifdef CONFIG_ECORE_ISCSI
381 	case PROTOCOLID_ISCSI:
382 		if (p_hwfn->p_iscsi_info->event_cb != OSAL_NULL) {
383 			struct ecore_iscsi_info *p_iscsi = p_hwfn->p_iscsi_info;
384 
385 			return p_iscsi->event_cb(p_iscsi->event_context,
386 						 p_eqe->opcode, &p_eqe->data);
387 		} else {
388 			DP_NOTICE(p_hwfn,
389 				 false, "iSCSI async completion is not set\n");
390 			return ECORE_NOTIMPL;
391 		}
392 #endif
393 	default:
394 		DP_NOTICE(p_hwfn,
395 			 true, "Unknown Async completion for protocol: %d\n",
396 			 p_eqe->protocol_id);
397 		return ECORE_INVAL;
398 	}
399 }
400 
401 /***************************************************************************
402  * EQ API
403  ***************************************************************************/
ecore_eq_prod_update(struct ecore_hwfn * p_hwfn,u16 prod)404 void ecore_eq_prod_update(struct ecore_hwfn	*p_hwfn,
405 			  u16			prod)
406 {
407 	u32 addr = GTT_BAR0_MAP_REG_USDM_RAM +
408 		USTORM_EQE_CONS_OFFSET(p_hwfn->rel_pf_id);
409 
410 	REG_WR16(p_hwfn, addr, prod);
411 
412 	/* keep prod updates ordered */
413 	OSAL_MMIOWB(p_hwfn->p_dev);
414 }
415 
ecore_eq_completion(struct ecore_hwfn * p_hwfn,void * cookie)416 enum _ecore_status_t ecore_eq_completion(struct ecore_hwfn	*p_hwfn,
417 					 void                   *cookie)
418 
419 {
420 	struct ecore_eq    *p_eq    = cookie;
421 	struct ecore_chain *p_chain = &p_eq->chain;
422 	enum _ecore_status_t rc = 0;
423 
424 	/* take a snapshot of the FW consumer */
425 	u16 fw_cons_idx = OSAL_LE16_TO_CPU(*p_eq->p_fw_cons);
426 
427 	DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ, "fw_cons_idx %x\n", fw_cons_idx);
428 
429 	/* Need to guarantee the fw_cons index we use points to a usuable
430 	 * element (to comply with our chain), so our macros would comply
431 	 */
432 	if ((fw_cons_idx & ecore_chain_get_usable_per_page(p_chain)) ==
433 	    ecore_chain_get_usable_per_page(p_chain)) {
434 		fw_cons_idx += ecore_chain_get_unusable_per_page(p_chain);
435 	}
436 
437 	/* Complete current segment of eq entries */
438 	while (fw_cons_idx != ecore_chain_get_cons_idx(p_chain)) {
439 		struct event_ring_entry *p_eqe = ecore_chain_consume(p_chain);
440 		if (!p_eqe) {
441 			rc = ECORE_INVAL;
442 			break;
443 		}
444 
445 		DP_VERBOSE(p_hwfn,
446 			   ECORE_MSG_SPQ,
447 			   "op %x prot %x res0 %x echo %x fwret %x flags %x\n",
448 			   p_eqe->opcode,	     /* Event Opcode */
449 			   p_eqe->protocol_id,	     /* Event Protocol ID */
450 			   p_eqe->reserved0,	     /* Reserved */
451 			   OSAL_LE16_TO_CPU(p_eqe->echo),/* Echo value from
452 							ramrod data on the host
453 						      */
454 			   p_eqe->fw_return_code,    /* FW return code for SP
455 							ramrods
456 						      */
457 			   p_eqe->flags);
458 #ifndef REMOVE_DBG
459 		if (p_eqe->protocol_id == PROTOCOLID_ISCSI)
460 			ecore_iscsi_eq_dump(p_hwfn, p_eqe);
461 #endif
462 
463 		if (GET_FIELD(p_eqe->flags, EVENT_RING_ENTRY_ASYNC)) {
464 			if (ecore_async_event_completion(p_hwfn, p_eqe))
465 				rc = ECORE_INVAL;
466 		} else if (ecore_spq_completion(p_hwfn,
467 						p_eqe->echo,
468 						p_eqe->fw_return_code,
469 						&p_eqe->data)) {
470 			rc = ECORE_INVAL;
471 		}
472 
473 		ecore_chain_recycle_consumed(p_chain);
474 	}
475 
476 	ecore_eq_prod_update(p_hwfn, ecore_chain_get_prod_idx(p_chain));
477 
478 	return rc;
479 }
480 
ecore_eq_alloc(struct ecore_hwfn * p_hwfn,u16 num_elem)481 enum _ecore_status_t ecore_eq_alloc(struct ecore_hwfn *p_hwfn, u16 num_elem)
482 {
483 	struct ecore_eq	*p_eq;
484 
485 	/* Allocate EQ struct */
486 	p_eq = OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, sizeof(*p_eq));
487 	if (!p_eq) {
488 		DP_NOTICE(p_hwfn, true,
489 			  "Failed to allocate `struct ecore_eq'\n");
490 		return ECORE_NOMEM;
491 	}
492 
493 	/* Allocate and initialize EQ chain*/
494 	if (ecore_chain_alloc(p_hwfn->p_dev,
495 			      ECORE_CHAIN_USE_TO_PRODUCE,
496 			      ECORE_CHAIN_MODE_PBL,
497 			      ECORE_CHAIN_CNT_TYPE_U16,
498 			      num_elem,
499 			      sizeof(union event_ring_element),
500 			      &p_eq->chain, OSAL_NULL) != ECORE_SUCCESS) {
501 		DP_NOTICE(p_hwfn, true, "Failed to allocate eq chain\n");
502 		goto eq_allocate_fail;
503 	}
504 
505 	/* register EQ completion on the SP SB */
506 	ecore_int_register_cb(p_hwfn, ecore_eq_completion,
507 			      p_eq, &p_eq->eq_sb_index, &p_eq->p_fw_cons);
508 
509 	p_hwfn->p_eq = p_eq;
510 	return ECORE_SUCCESS;
511 
512 eq_allocate_fail:
513 	OSAL_FREE(p_hwfn->p_dev, p_eq);
514 	return ECORE_NOMEM;
515 }
516 
ecore_eq_setup(struct ecore_hwfn * p_hwfn)517 void ecore_eq_setup(struct ecore_hwfn *p_hwfn)
518 {
519 	ecore_chain_reset(&p_hwfn->p_eq->chain);
520 }
521 
ecore_eq_free(struct ecore_hwfn * p_hwfn)522 void ecore_eq_free(struct ecore_hwfn *p_hwfn)
523 {
524 	if (!p_hwfn->p_eq)
525 		return;
526 
527 	ecore_chain_free(p_hwfn->p_dev, &p_hwfn->p_eq->chain);
528 
529 	OSAL_FREE(p_hwfn->p_dev, p_hwfn->p_eq);
530 	p_hwfn->p_eq = OSAL_NULL;
531 }
532 
533 /***************************************************************************
534 * CQE API - manipulate EQ functionallity
535 ***************************************************************************/
ecore_cqe_completion(struct ecore_hwfn * p_hwfn,struct eth_slow_path_rx_cqe * cqe,enum protocol_type protocol)536 static enum _ecore_status_t ecore_cqe_completion(struct ecore_hwfn *p_hwfn,
537 						 struct eth_slow_path_rx_cqe *cqe,
538 						 enum protocol_type protocol)
539 {
540 	if (IS_VF(p_hwfn->p_dev))
541 		return OSAL_VF_CQE_COMPLETION(p_hwfn, cqe, protocol);
542 
543 	/* @@@tmp - it's possible we'll eventually want to handle some
544 	 * actual commands that can arrive here, but for now this is only
545 	 * used to complete the ramrod using the echo value on the cqe
546 	 */
547 	return ecore_spq_completion(p_hwfn, cqe->echo, 0, OSAL_NULL);
548 }
549 
ecore_eth_cqe_completion(struct ecore_hwfn * p_hwfn,struct eth_slow_path_rx_cqe * cqe)550 enum _ecore_status_t ecore_eth_cqe_completion(struct ecore_hwfn *p_hwfn,
551 					      struct eth_slow_path_rx_cqe *cqe)
552 {
553 	enum _ecore_status_t rc;
554 
555 	rc = ecore_cqe_completion(p_hwfn, cqe, PROTOCOLID_ETH);
556 	if (rc) {
557 		DP_NOTICE(p_hwfn, true,
558 			  "Failed to handle RXQ CQE [cmd 0x%02x]\n",
559 			  cqe->ramrod_cmd_id);
560 	}
561 
562 	return rc;
563 }
564 
565 /***************************************************************************
566  * Slow hwfn Queue (spq)
567  ***************************************************************************/
ecore_spq_setup(struct ecore_hwfn * p_hwfn)568 void ecore_spq_setup(struct ecore_hwfn *p_hwfn)
569 {
570 	struct ecore_spq *p_spq = p_hwfn->p_spq;
571 	struct ecore_spq_entry *p_virt = OSAL_NULL;
572 	dma_addr_t p_phys = 0;
573 	u32 i, capacity;
574 
575 	OSAL_LIST_INIT(&p_spq->pending);
576 	OSAL_LIST_INIT(&p_spq->completion_pending);
577 	OSAL_LIST_INIT(&p_spq->free_pool);
578 	OSAL_LIST_INIT(&p_spq->unlimited_pending);
579 	OSAL_SPIN_LOCK_INIT(&p_spq->lock);
580 
581 	/* SPQ empty pool */
582 	p_phys = p_spq->p_phys + offsetof(struct ecore_spq_entry, ramrod);
583 	p_virt = p_spq->p_virt;
584 
585 	capacity = ecore_chain_get_capacity(&p_spq->chain);
586 	for (i = 0; i < capacity; i++) {
587 		DMA_REGPAIR_LE(p_virt->elem.data_ptr, p_phys);
588 
589 		OSAL_LIST_PUSH_TAIL(&p_virt->list, &p_spq->free_pool);
590 
591 		p_virt++;
592 		p_phys += sizeof(struct ecore_spq_entry);
593 	}
594 
595 	/* Statistics */
596 	p_spq->normal_count		= 0;
597 	p_spq->comp_count		= 0;
598 	p_spq->comp_sent_count		= 0;
599 	p_spq->unlimited_pending_count	= 0;
600 
601 	OSAL_MEM_ZERO(p_spq->p_comp_bitmap,
602 		      SPQ_COMP_BMAP_SIZE * sizeof(unsigned long));
603 	p_spq->comp_bitmap_idx = 0;
604 
605 	/* SPQ cid, cannot fail */
606 	ecore_cxt_acquire_cid(p_hwfn, PROTOCOLID_CORE, &p_spq->cid);
607 	ecore_spq_hw_initialize(p_hwfn, p_spq);
608 
609 	/* reset the chain itself */
610 	ecore_chain_reset(&p_spq->chain);
611 }
612 
ecore_spq_alloc(struct ecore_hwfn * p_hwfn)613 enum _ecore_status_t ecore_spq_alloc(struct ecore_hwfn *p_hwfn)
614 {
615 	struct ecore_spq_entry *p_virt = OSAL_NULL;
616 	struct ecore_spq *p_spq = OSAL_NULL;
617 	dma_addr_t p_phys = 0;
618 	u32 capacity;
619 
620 	/* SPQ struct */
621 	p_spq =
622 	    OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, sizeof(struct ecore_spq));
623 	if (!p_spq) {
624 		DP_NOTICE(p_hwfn, true, "Failed to allocate `struct ecore_spq'\n");
625 		return ECORE_NOMEM;
626 	}
627 
628 	/* SPQ ring  */
629 	if (ecore_chain_alloc(p_hwfn->p_dev,
630 			      ECORE_CHAIN_USE_TO_PRODUCE,
631 			      ECORE_CHAIN_MODE_SINGLE,
632 			      ECORE_CHAIN_CNT_TYPE_U16,
633 			      0, /* N/A when the mode is SINGLE */
634 			      sizeof(struct slow_path_element),
635 			      &p_spq->chain, OSAL_NULL)) {
636 		DP_NOTICE(p_hwfn, true, "Failed to allocate spq chain\n");
637 		goto spq_allocate_fail;
638 	}
639 
640 	/* allocate and fill the SPQ elements (incl. ramrod data list) */
641 	capacity = ecore_chain_get_capacity(&p_spq->chain);
642 	p_virt = OSAL_DMA_ALLOC_COHERENT(p_hwfn->p_dev, &p_phys,
643 					 capacity *
644 					 sizeof(struct ecore_spq_entry));
645 	if (!p_virt) {
646 		goto spq_allocate_fail;
647 	}
648 
649 	p_spq->p_virt = p_virt;
650 	p_spq->p_phys = p_phys;
651 
652 	OSAL_SPIN_LOCK_ALLOC(p_hwfn, &p_spq->lock);
653 
654 	p_hwfn->p_spq = p_spq;
655 	return ECORE_SUCCESS;
656 
657 spq_allocate_fail:
658 	ecore_chain_free(p_hwfn->p_dev, &p_spq->chain);
659 	OSAL_FREE(p_hwfn->p_dev, p_spq);
660 	return ECORE_NOMEM;
661 }
662 
ecore_spq_free(struct ecore_hwfn * p_hwfn)663 void ecore_spq_free(struct ecore_hwfn *p_hwfn)
664 {
665 	struct ecore_spq *p_spq = p_hwfn->p_spq;
666 	u32 capacity;
667 
668 	if (!p_spq)
669 		return;
670 
671 	if (p_spq->p_virt) {
672 		capacity = ecore_chain_get_capacity(&p_spq->chain);
673 		OSAL_DMA_FREE_COHERENT(p_hwfn->p_dev,
674 				       p_spq->p_virt,
675 				       p_spq->p_phys,
676 				       capacity *
677 				       sizeof(struct ecore_spq_entry));
678 	}
679 
680 	ecore_chain_free(p_hwfn->p_dev, &p_spq->chain);
681 	OSAL_SPIN_LOCK_DEALLOC(&p_spq->lock);
682 
683 	OSAL_FREE(p_hwfn->p_dev, p_spq);
684 	p_hwfn->p_spq = OSAL_NULL;
685 }
686 
ecore_spq_get_entry(struct ecore_hwfn * p_hwfn,struct ecore_spq_entry ** pp_ent)687 enum _ecore_status_t ecore_spq_get_entry(struct ecore_hwfn *p_hwfn,
688 					 struct ecore_spq_entry **pp_ent)
689 {
690 	struct ecore_spq *p_spq = p_hwfn->p_spq;
691 	struct ecore_spq_entry *p_ent = OSAL_NULL;
692 	enum _ecore_status_t rc = ECORE_SUCCESS;
693 
694 	OSAL_SPIN_LOCK(&p_spq->lock);
695 
696 	if (OSAL_LIST_IS_EMPTY(&p_spq->free_pool)) {
697 
698 		p_ent = OSAL_ZALLOC(p_hwfn->p_dev, GFP_ATOMIC, sizeof(*p_ent));
699 		if (!p_ent) {
700 			DP_NOTICE(p_hwfn, true, "Failed to allocate an SPQ entry for a pending ramrod\n");
701 			rc = ECORE_NOMEM;
702 			goto out_unlock;
703 		}
704 		p_ent->queue = &p_spq->unlimited_pending;
705 	} else {
706 		p_ent = OSAL_LIST_FIRST_ENTRY(&p_spq->free_pool,
707 					      struct ecore_spq_entry,
708 					      list);
709 		OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->free_pool);
710 		p_ent->queue = &p_spq->pending;
711 	}
712 
713 	*pp_ent = p_ent;
714 
715 out_unlock:
716 	OSAL_SPIN_UNLOCK(&p_spq->lock);
717 	return rc;
718 }
719 
720 /* Locked variant; Should be called while the SPQ lock is taken */
__ecore_spq_return_entry(struct ecore_hwfn * p_hwfn,struct ecore_spq_entry * p_ent)721 static void __ecore_spq_return_entry(struct ecore_hwfn *p_hwfn,
722 			      struct ecore_spq_entry *p_ent)
723 {
724 	OSAL_LIST_PUSH_TAIL(&p_ent->list, &p_hwfn->p_spq->free_pool);
725 }
726 
ecore_spq_return_entry(struct ecore_hwfn * p_hwfn,struct ecore_spq_entry * p_ent)727 void ecore_spq_return_entry(struct ecore_hwfn *p_hwfn,
728 			    struct ecore_spq_entry *p_ent)
729 {
730 	OSAL_SPIN_LOCK(&p_hwfn->p_spq->lock);
731 	__ecore_spq_return_entry(p_hwfn, p_ent);
732 	OSAL_SPIN_UNLOCK(&p_hwfn->p_spq->lock);
733 }
734 
735 /**
736  * @brief ecore_spq_add_entry - adds a new entry to the pending
737  *        list. Should be used while lock is being held.
738  *
739  * Addes an entry to the pending list is there is room (en empty
740  * element is avaliable in the free_pool), or else places the
741  * entry in the unlimited_pending pool.
742  *
743  * @param p_hwfn
744  * @param p_ent
745  * @param priority
746  *
747  * @return enum _ecore_status_t
748  */
ecore_spq_add_entry(struct ecore_hwfn * p_hwfn,struct ecore_spq_entry * p_ent,enum spq_priority priority)749 static enum _ecore_status_t ecore_spq_add_entry(struct ecore_hwfn *p_hwfn,
750 						struct ecore_spq_entry *p_ent,
751 						enum spq_priority priority)
752 {
753 	struct ecore_spq	*p_spq	= p_hwfn->p_spq;
754 
755 	if (p_ent->queue == &p_spq->unlimited_pending) {
756 		if (OSAL_LIST_IS_EMPTY(&p_spq->free_pool)) {
757 
758 			OSAL_LIST_PUSH_TAIL(&p_ent->list,
759 					    &p_spq->unlimited_pending);
760 			p_spq->unlimited_pending_count++;
761 
762 			return ECORE_SUCCESS;
763 
764 		} else {
765 			struct ecore_spq_entry *p_en2;
766 
767 			p_en2 = OSAL_LIST_FIRST_ENTRY(&p_spq->free_pool,
768 						     struct ecore_spq_entry,
769 						     list);
770 			OSAL_LIST_REMOVE_ENTRY(&p_en2->list, &p_spq->free_pool);
771 
772 			/* Copy the ring element physical pointer to the new
773 			 * entry, since we are about to override the entire ring
774 			 * entry and don't want to lose the pointer.
775 			 */
776 			p_ent->elem.data_ptr = p_en2->elem.data_ptr;
777 
778 			*p_en2 = *p_ent;
779 
780 			/* EBLOCK responsible to free the allocated p_ent */
781 			if (p_ent->comp_mode != ECORE_SPQ_MODE_EBLOCK)
782 				OSAL_FREE(p_hwfn->p_dev, p_ent);
783 
784 			p_ent = p_en2;
785 		}
786 	}
787 
788 	/* entry is to be placed in 'pending' queue */
789 	switch (priority) {
790 	case ECORE_SPQ_PRIORITY_NORMAL:
791 		OSAL_LIST_PUSH_TAIL(&p_ent->list, &p_spq->pending);
792 		p_spq->normal_count++;
793 		break;
794 	case ECORE_SPQ_PRIORITY_HIGH:
795 		OSAL_LIST_PUSH_HEAD(&p_ent->list, &p_spq->pending);
796 		p_spq->high_count++;
797 		break;
798 	default:
799 		return ECORE_INVAL;
800 	}
801 
802 	return ECORE_SUCCESS;
803 }
804 
805 /***************************************************************************
806  * Accessor
807  ***************************************************************************/
808 
ecore_spq_get_cid(struct ecore_hwfn * p_hwfn)809 u32 ecore_spq_get_cid(struct ecore_hwfn *p_hwfn)
810 {
811 	if (!p_hwfn->p_spq) {
812 		return 0xffffffff;	/* illegal */
813 	}
814 	return p_hwfn->p_spq->cid;
815 }
816 
817 /***************************************************************************
818  * Posting new Ramrods
819  ***************************************************************************/
820 
ecore_spq_post_list(struct ecore_hwfn * p_hwfn,osal_list_t * head,u32 keep_reserve)821 static enum _ecore_status_t ecore_spq_post_list(struct ecore_hwfn *p_hwfn,
822 						osal_list_t	  *head,
823 						u32		  keep_reserve)
824 {
825 	struct ecore_spq	*p_spq = p_hwfn->p_spq;
826 	enum _ecore_status_t	rc;
827 
828 	/* TODO - implementation might be wasteful; will always keep room
829 	 * for an additional high priority ramrod (even if one is already
830 	 * pending FW)
831 	 */
832 	while (ecore_chain_get_elem_left(&p_spq->chain) > keep_reserve &&
833 	       !OSAL_LIST_IS_EMPTY(head)) {
834 		struct ecore_spq_entry  *p_ent =
835 		    OSAL_LIST_FIRST_ENTRY(head, struct ecore_spq_entry, list);
836 		if (p_ent != OSAL_NULL) {
837 #if defined(_NTDDK_)
838 #pragma warning(suppress : 6011 28182)
839 #endif
840 			OSAL_LIST_REMOVE_ENTRY(&p_ent->list, head);
841 			OSAL_LIST_PUSH_TAIL(&p_ent->list, &p_spq->completion_pending);
842 			p_spq->comp_sent_count++;
843 
844 			rc = ecore_spq_hw_post(p_hwfn, p_spq, p_ent);
845 			if (rc) {
846 				OSAL_LIST_REMOVE_ENTRY(&p_ent->list,
847 									&p_spq->completion_pending);
848 				__ecore_spq_return_entry(p_hwfn, p_ent);
849 				return rc;
850 			}
851 		}
852 	}
853 
854 	return ECORE_SUCCESS;
855 }
856 
ecore_spq_pend_post(struct ecore_hwfn * p_hwfn)857 static enum _ecore_status_t ecore_spq_pend_post(struct ecore_hwfn *p_hwfn)
858 {
859 	struct ecore_spq *p_spq = p_hwfn->p_spq;
860 	struct ecore_spq_entry *p_ent = OSAL_NULL;
861 
862 	while (!OSAL_LIST_IS_EMPTY(&p_spq->free_pool))
863 	{
864 		if (OSAL_LIST_IS_EMPTY(&p_spq->unlimited_pending))
865 			break;
866 
867 		p_ent = OSAL_LIST_FIRST_ENTRY(&p_spq->unlimited_pending,
868 					      struct ecore_spq_entry,
869 					      list);
870 		if (!p_ent)
871 			return ECORE_INVAL;
872 
873 #if defined(_NTDDK_)
874 #pragma warning(suppress : 6011)
875 #endif
876 		OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->unlimited_pending);
877 
878 		ecore_spq_add_entry(p_hwfn, p_ent, p_ent->priority);
879 	}
880 
881 	return ecore_spq_post_list(p_hwfn, &p_spq->pending,
882 				   SPQ_HIGH_PRI_RESERVE_DEFAULT);
883 }
884 
ecore_spq_post(struct ecore_hwfn * p_hwfn,struct ecore_spq_entry * p_ent,u8 * fw_return_code)885 enum _ecore_status_t ecore_spq_post(struct ecore_hwfn		*p_hwfn,
886 				    struct ecore_spq_entry	*p_ent,
887 				    u8                          *fw_return_code)
888 {
889 	enum _ecore_status_t	rc = ECORE_SUCCESS;
890 	struct ecore_spq	*p_spq = p_hwfn ? p_hwfn->p_spq : OSAL_NULL;
891 	bool			b_ret_ent = true;
892 
893 	if (!p_hwfn)
894 		return ECORE_INVAL;
895 
896 	if (!p_ent) {
897 		DP_NOTICE(p_hwfn, true, "Got a NULL pointer\n");
898 		return ECORE_INVAL;
899 	}
900 
901 	if (p_hwfn->p_dev->recov_in_prog) {
902 		DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
903 			   "Recovery is in progress -> skip spq post [cmd %02x protocol %02x]\n",
904 			   p_ent->elem.hdr.cmd_id, p_ent->elem.hdr.protocol_id);
905 		/* Return success to let the flows to be completed successfully
906 		 * w/o any error handling.
907 		 */
908 		return ECORE_SUCCESS;
909 	}
910 
911 	OSAL_SPIN_LOCK(&p_spq->lock);
912 
913 	/* Complete the entry */
914 	rc = ecore_spq_fill_entry(p_hwfn, p_ent);
915 
916 	/* Check return value after LOCK is taken for cleaner error flow */
917 	if (rc)
918 		goto spq_post_fail;
919 
920 	/* Add the request to the pending queue */
921 	rc = ecore_spq_add_entry(p_hwfn, p_ent, p_ent->priority);
922 	if (rc)
923 		goto spq_post_fail;
924 
925 	rc = ecore_spq_pend_post(p_hwfn);
926 	if (rc) {
927 		/* Since it's possible that pending failed for a different
928 		 * entry [altough unlikely], the failed entry was already
929 		 * dealt with; No need to return it here.
930 		 */
931 		b_ret_ent = false;
932 		goto spq_post_fail;
933 	}
934 
935 	OSAL_SPIN_UNLOCK(&p_spq->lock);
936 
937 	if (p_ent->comp_mode == ECORE_SPQ_MODE_EBLOCK) {
938 		/* For entries in ECORE BLOCK mode, the completion code cannot
939 		 * perform the neccessary cleanup - if it did, we couldn't
940 		 * access p_ent here to see whether it's successful or not.
941 		 * Thus, after gaining the answer - perform the cleanup here.
942 		 */
943 		rc = ecore_spq_block(p_hwfn, p_ent, fw_return_code,
944 				     p_ent->queue == &p_spq->unlimited_pending);
945 
946 		if (p_ent->queue == &p_spq->unlimited_pending) {
947 			/* This is an allocated p_ent which does not need to
948 			 * return to pool.
949 			 */
950 			OSAL_FREE(p_hwfn->p_dev, p_ent);
951 
952 			/* TBD: handle error flow and remove p_ent from
953 			 * completion pending
954 			 */
955 			return rc;
956 		}
957 
958 		if (rc)
959 			goto spq_post_fail2;
960 
961 		/* return to pool */
962 		ecore_spq_return_entry(p_hwfn, p_ent);
963 	}
964 	return rc;
965 
966 spq_post_fail2:
967 	OSAL_SPIN_LOCK(&p_spq->lock);
968 	OSAL_LIST_REMOVE_ENTRY(&p_ent->list, &p_spq->completion_pending);
969 	ecore_chain_return_produced(&p_spq->chain);
970 
971 spq_post_fail:
972 	/* return to the free pool */
973 	if (b_ret_ent)
974 		__ecore_spq_return_entry(p_hwfn, p_ent);
975 	OSAL_SPIN_UNLOCK(&p_spq->lock);
976 
977 	return rc;
978 }
979 
ecore_spq_completion(struct ecore_hwfn * p_hwfn,__le16 echo,u8 fw_return_code,union event_ring_data * p_data)980 enum _ecore_status_t ecore_spq_completion(struct ecore_hwfn *p_hwfn,
981 					  __le16 echo,
982 					  u8 fw_return_code,
983 					  union event_ring_data	*p_data)
984 {
985 	struct ecore_spq	*p_spq;
986 	struct ecore_spq_entry	*p_ent = OSAL_NULL;
987 	struct ecore_spq_entry	*tmp;
988 	struct ecore_spq_entry	*found = OSAL_NULL;
989 	enum _ecore_status_t	rc;
990 
991 	if (!p_hwfn) {
992 		return ECORE_INVAL;
993 	}
994 
995 	p_spq = p_hwfn->p_spq;
996 	if (!p_spq) {
997 		return ECORE_INVAL;
998 	}
999 
1000 	OSAL_SPIN_LOCK(&p_spq->lock);
1001 	OSAL_LIST_FOR_EACH_ENTRY_SAFE(p_ent,
1002 				      tmp,
1003 				      &p_spq->completion_pending,
1004 				      list,
1005 				      struct ecore_spq_entry) {
1006 
1007 		if (p_ent->elem.hdr.echo == echo) {
1008 			OSAL_LIST_REMOVE_ENTRY(&p_ent->list,
1009 					       &p_spq->completion_pending);
1010 
1011 			/* Avoid overriding of SPQ entries when getting
1012 			 * out-of-order completions, by marking the completions
1013 			 * in a bitmap and increasing the chain consumer only
1014 			 * for the first successive completed entries.
1015 			 */
1016 			SPQ_COMP_BMAP_SET_BIT(p_spq, echo);
1017 			while (SPQ_COMP_BMAP_TEST_BIT(p_spq,
1018 						      p_spq->comp_bitmap_idx)) {
1019 				SPQ_COMP_BMAP_CLEAR_BIT(p_spq,
1020 							p_spq->comp_bitmap_idx);
1021 				p_spq->comp_bitmap_idx++;
1022 				ecore_chain_return_produced(&p_spq->chain);
1023 			}
1024 
1025 			p_spq->comp_count++;
1026 			found = p_ent;
1027 			break;
1028 		}
1029 
1030 		/* This is debug and should be relatively uncommon - depends
1031 		 * on scenarios which have mutliple per-PF sent ramrods.
1032 		 */
1033 		DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
1034 			   "Got completion for echo %04x - doesn't match echo %04x in completion pending list\n",
1035 			   OSAL_LE16_TO_CPU(echo),
1036 			   OSAL_LE16_TO_CPU(p_ent->elem.hdr.echo));
1037 	}
1038 
1039 	/* Release lock before callback, as callback may post
1040 	 * an additional ramrod.
1041 	 */
1042 	OSAL_SPIN_UNLOCK(&p_spq->lock);
1043 
1044 	if (!found) {
1045 		DP_NOTICE(p_hwfn, true,
1046 			  "Failed to find an entry this EQE [echo %04x] completes\n",
1047 			  OSAL_LE16_TO_CPU(echo));
1048 		return ECORE_EXISTS;
1049 	}
1050 
1051 	DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ,
1052 		   "Complete EQE [echo %04x]: func %p cookie %p)\n",
1053 		   OSAL_LE16_TO_CPU(echo),
1054 		   p_ent->comp_cb.function, p_ent->comp_cb.cookie);
1055 	if (found->comp_cb.function)
1056 		found->comp_cb.function(p_hwfn, found->comp_cb.cookie, p_data,
1057 					fw_return_code);
1058 	else
1059 		DP_VERBOSE(p_hwfn, ECORE_MSG_SPQ, "Got a completion without a callback function\n");
1060 
1061 	if ((found->comp_mode != ECORE_SPQ_MODE_EBLOCK) ||
1062 	    (found->queue == &p_spq->unlimited_pending))
1063 		/* EBLOCK  is responsible for returning its own entry into the
1064 		 * free list, unless it originally added the entry into the
1065 		 * unlimited pending list.
1066 		 */
1067 		ecore_spq_return_entry(p_hwfn, found);
1068 
1069 	/* Attempt to post pending requests */
1070 	OSAL_SPIN_LOCK(&p_spq->lock);
1071 	rc = ecore_spq_pend_post(p_hwfn);
1072 	OSAL_SPIN_UNLOCK(&p_spq->lock);
1073 
1074 	return rc;
1075 }
1076 
ecore_consq_alloc(struct ecore_hwfn * p_hwfn)1077 enum _ecore_status_t ecore_consq_alloc(struct ecore_hwfn *p_hwfn)
1078 {
1079 	struct ecore_consq *p_consq;
1080 
1081 	/* Allocate ConsQ struct */
1082 	p_consq = OSAL_ZALLOC(p_hwfn->p_dev, GFP_KERNEL, sizeof(*p_consq));
1083 	if (!p_consq) {
1084 		DP_NOTICE(p_hwfn, true,
1085 			  "Failed to allocate `struct ecore_consq'\n");
1086 		return ECORE_NOMEM;
1087 	}
1088 
1089 	/* Allocate and initialize EQ chain*/
1090 	if (ecore_chain_alloc(p_hwfn->p_dev,
1091 			      ECORE_CHAIN_USE_TO_PRODUCE,
1092 			      ECORE_CHAIN_MODE_PBL,
1093 			      ECORE_CHAIN_CNT_TYPE_U16,
1094 			      ECORE_CHAIN_PAGE_SIZE/0x80,
1095 			      0x80,
1096 			      &p_consq->chain, OSAL_NULL) != ECORE_SUCCESS) {
1097 		DP_NOTICE(p_hwfn, true, "Failed to allocate consq chain");
1098 		goto consq_allocate_fail;
1099 	}
1100 
1101 	p_hwfn->p_consq = p_consq;
1102 	return ECORE_SUCCESS;
1103 
1104 consq_allocate_fail:
1105 	OSAL_FREE(p_hwfn->p_dev, p_consq);
1106 	return ECORE_NOMEM;
1107 }
1108 
ecore_consq_setup(struct ecore_hwfn * p_hwfn)1109 void ecore_consq_setup(struct ecore_hwfn *p_hwfn)
1110 {
1111 	ecore_chain_reset(&p_hwfn->p_consq->chain);
1112 }
1113 
ecore_consq_free(struct ecore_hwfn * p_hwfn)1114 void ecore_consq_free(struct ecore_hwfn *p_hwfn)
1115 {
1116 	if (!p_hwfn->p_consq)
1117 		return;
1118 
1119 	ecore_chain_free(p_hwfn->p_dev, &p_hwfn->p_consq->chain);
1120 
1121 	OSAL_FREE(p_hwfn->p_dev, p_hwfn->p_consq);
1122 	p_hwfn->p_consq = OSAL_NULL;
1123 }
1124 
1125