1 /* This file is part of the Emulex RoCE Device Driver for
2  * RoCE (RDMA over Converged Ethernet) adapters.
3  * Copyright (C) 2012-2015 Emulex. All rights reserved.
4  * EMULEX and SLI are trademarks of Emulex.
5  * www.emulex.com
6  *
7  * This software is available to you under a choice of one of two licenses.
8  * You may choose to be licensed under the terms of the GNU General Public
9  * License (GPL) Version 2, available from the file COPYING in the main
10  * directory of this source tree, or the BSD license below:
11  *
12  * Redistribution and use in source and binary forms, with or without
13  * modification, are permitted provided that the following conditions
14  * are met:
15  *
16  * - Redistributions of source code must retain the above copyright notice,
17  *   this list of conditions and the following disclaimer.
18  *
19  * - Redistributions in binary form must reproduce the above copyright
20  *   notice, this list of conditions and the following disclaimer in
21  *   the documentation and/or other materials provided with the distribution.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
24  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
27  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
28  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
29  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
30  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
31  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
32  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
33  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34  *
35  * Contact Information:
36  * linux-drivers@emulex.com
37  *
38  * Emulex
39  * 3333 Susan Street
40  * Costa Mesa, CA 92626
41  */
42 
43 #include <linux/sched.h>
44 #include <linux/interrupt.h>
45 #include <linux/log2.h>
46 #include <linux/dma-mapping.h>
47 #include <linux/if_ether.h>
48 
49 #include <rdma/ib_verbs.h>
50 #include <rdma/ib_user_verbs.h>
51 #include <rdma/ib_cache.h>
52 
53 #include "ocrdma.h"
54 #include "ocrdma_hw.h"
55 #include "ocrdma_verbs.h"
56 #include "ocrdma_ah.h"
57 
58 enum mbx_status {
59 	OCRDMA_MBX_STATUS_FAILED		= 1,
60 	OCRDMA_MBX_STATUS_ILLEGAL_FIELD		= 3,
61 	OCRDMA_MBX_STATUS_OOR			= 100,
62 	OCRDMA_MBX_STATUS_INVALID_PD		= 101,
63 	OCRDMA_MBX_STATUS_PD_INUSE		= 102,
64 	OCRDMA_MBX_STATUS_INVALID_CQ		= 103,
65 	OCRDMA_MBX_STATUS_INVALID_QP		= 104,
66 	OCRDMA_MBX_STATUS_INVALID_LKEY		= 105,
67 	OCRDMA_MBX_STATUS_ORD_EXCEEDS		= 106,
68 	OCRDMA_MBX_STATUS_IRD_EXCEEDS		= 107,
69 	OCRDMA_MBX_STATUS_SENDQ_WQE_EXCEEDS	= 108,
70 	OCRDMA_MBX_STATUS_RECVQ_RQE_EXCEEDS	= 109,
71 	OCRDMA_MBX_STATUS_SGE_SEND_EXCEEDS	= 110,
72 	OCRDMA_MBX_STATUS_SGE_WRITE_EXCEEDS	= 111,
73 	OCRDMA_MBX_STATUS_SGE_RECV_EXCEEDS	= 112,
74 	OCRDMA_MBX_STATUS_INVALID_STATE_CHANGE	= 113,
75 	OCRDMA_MBX_STATUS_MW_BOUND		= 114,
76 	OCRDMA_MBX_STATUS_INVALID_VA		= 115,
77 	OCRDMA_MBX_STATUS_INVALID_LENGTH	= 116,
78 	OCRDMA_MBX_STATUS_INVALID_FBO		= 117,
79 	OCRDMA_MBX_STATUS_INVALID_ACC_RIGHTS	= 118,
80 	OCRDMA_MBX_STATUS_INVALID_PBE_SIZE	= 119,
81 	OCRDMA_MBX_STATUS_INVALID_PBL_ENTRY	= 120,
82 	OCRDMA_MBX_STATUS_INVALID_PBL_SHIFT	= 121,
83 	OCRDMA_MBX_STATUS_INVALID_SRQ_ID	= 129,
84 	OCRDMA_MBX_STATUS_SRQ_ERROR		= 133,
85 	OCRDMA_MBX_STATUS_RQE_EXCEEDS		= 134,
86 	OCRDMA_MBX_STATUS_MTU_EXCEEDS		= 135,
87 	OCRDMA_MBX_STATUS_MAX_QP_EXCEEDS	= 136,
88 	OCRDMA_MBX_STATUS_SRQ_LIMIT_EXCEEDS	= 137,
89 	OCRDMA_MBX_STATUS_SRQ_SIZE_UNDERUNS	= 138,
90 	OCRDMA_MBX_STATUS_QP_BOUND		= 130,
91 	OCRDMA_MBX_STATUS_INVALID_CHANGE	= 139,
92 	OCRDMA_MBX_STATUS_ATOMIC_OPS_UNSUP	= 140,
93 	OCRDMA_MBX_STATUS_INVALID_RNR_NAK_TIMER	= 141,
94 	OCRDMA_MBX_STATUS_MW_STILL_BOUND	= 142,
95 	OCRDMA_MBX_STATUS_PKEY_INDEX_INVALID	= 143,
96 	OCRDMA_MBX_STATUS_PKEY_INDEX_EXCEEDS	= 144
97 };
98 
99 enum additional_status {
100 	OCRDMA_MBX_ADDI_STATUS_INSUFFICIENT_RESOURCES = 22
101 };
102 
103 enum cqe_status {
104 	OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_PRIVILEDGES	= 1,
105 	OCRDMA_MBX_CQE_STATUS_INVALID_PARAMETER		= 2,
106 	OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_RESOURCES	= 3,
107 	OCRDMA_MBX_CQE_STATUS_QUEUE_FLUSHING		= 4,
108 	OCRDMA_MBX_CQE_STATUS_DMA_FAILED		= 5
109 };
110 
ocrdma_get_eqe(struct ocrdma_eq * eq)111 static inline void *ocrdma_get_eqe(struct ocrdma_eq *eq)
112 {
113 	return eq->q.va + (eq->q.tail * sizeof(struct ocrdma_eqe));
114 }
115 
ocrdma_eq_inc_tail(struct ocrdma_eq * eq)116 static inline void ocrdma_eq_inc_tail(struct ocrdma_eq *eq)
117 {
118 	eq->q.tail = (eq->q.tail + 1) & (OCRDMA_EQ_LEN - 1);
119 }
120 
ocrdma_get_mcqe(struct ocrdma_dev * dev)121 static inline void *ocrdma_get_mcqe(struct ocrdma_dev *dev)
122 {
123 	struct ocrdma_mcqe *cqe = (struct ocrdma_mcqe *)
124 	    (dev->mq.cq.va + (dev->mq.cq.tail * sizeof(struct ocrdma_mcqe)));
125 
126 	if (!(le32_to_cpu(cqe->valid_ae_cmpl_cons) & OCRDMA_MCQE_VALID_MASK))
127 		return NULL;
128 	return cqe;
129 }
130 
ocrdma_mcq_inc_tail(struct ocrdma_dev * dev)131 static inline void ocrdma_mcq_inc_tail(struct ocrdma_dev *dev)
132 {
133 	dev->mq.cq.tail = (dev->mq.cq.tail + 1) & (OCRDMA_MQ_CQ_LEN - 1);
134 }
135 
ocrdma_get_mqe(struct ocrdma_dev * dev)136 static inline struct ocrdma_mqe *ocrdma_get_mqe(struct ocrdma_dev *dev)
137 {
138 	return dev->mq.sq.va + (dev->mq.sq.head * sizeof(struct ocrdma_mqe));
139 }
140 
ocrdma_mq_inc_head(struct ocrdma_dev * dev)141 static inline void ocrdma_mq_inc_head(struct ocrdma_dev *dev)
142 {
143 	dev->mq.sq.head = (dev->mq.sq.head + 1) & (OCRDMA_MQ_LEN - 1);
144 }
145 
ocrdma_get_mqe_rsp(struct ocrdma_dev * dev)146 static inline void *ocrdma_get_mqe_rsp(struct ocrdma_dev *dev)
147 {
148 	return dev->mq.sq.va + (dev->mqe_ctx.tag * sizeof(struct ocrdma_mqe));
149 }
150 
get_ibqp_state(enum ocrdma_qp_state qps)151 enum ib_qp_state get_ibqp_state(enum ocrdma_qp_state qps)
152 {
153 	switch (qps) {
154 	case OCRDMA_QPS_RST:
155 		return IB_QPS_RESET;
156 	case OCRDMA_QPS_INIT:
157 		return IB_QPS_INIT;
158 	case OCRDMA_QPS_RTR:
159 		return IB_QPS_RTR;
160 	case OCRDMA_QPS_RTS:
161 		return IB_QPS_RTS;
162 	case OCRDMA_QPS_SQD:
163 	case OCRDMA_QPS_SQ_DRAINING:
164 		return IB_QPS_SQD;
165 	case OCRDMA_QPS_SQE:
166 		return IB_QPS_SQE;
167 	case OCRDMA_QPS_ERR:
168 		return IB_QPS_ERR;
169 	}
170 	return IB_QPS_ERR;
171 }
172 
get_ocrdma_qp_state(enum ib_qp_state qps)173 static enum ocrdma_qp_state get_ocrdma_qp_state(enum ib_qp_state qps)
174 {
175 	switch (qps) {
176 	case IB_QPS_RESET:
177 		return OCRDMA_QPS_RST;
178 	case IB_QPS_INIT:
179 		return OCRDMA_QPS_INIT;
180 	case IB_QPS_RTR:
181 		return OCRDMA_QPS_RTR;
182 	case IB_QPS_RTS:
183 		return OCRDMA_QPS_RTS;
184 	case IB_QPS_SQD:
185 		return OCRDMA_QPS_SQD;
186 	case IB_QPS_SQE:
187 		return OCRDMA_QPS_SQE;
188 	case IB_QPS_ERR:
189 		return OCRDMA_QPS_ERR;
190 	}
191 	return OCRDMA_QPS_ERR;
192 }
193 
ocrdma_get_mbx_errno(u32 status)194 static int ocrdma_get_mbx_errno(u32 status)
195 {
196 	int err_num;
197 	u8 mbox_status = (status & OCRDMA_MBX_RSP_STATUS_MASK) >>
198 					OCRDMA_MBX_RSP_STATUS_SHIFT;
199 	u8 add_status = (status & OCRDMA_MBX_RSP_ASTATUS_MASK) >>
200 					OCRDMA_MBX_RSP_ASTATUS_SHIFT;
201 
202 	switch (mbox_status) {
203 	case OCRDMA_MBX_STATUS_OOR:
204 	case OCRDMA_MBX_STATUS_MAX_QP_EXCEEDS:
205 		err_num = -EAGAIN;
206 		break;
207 
208 	case OCRDMA_MBX_STATUS_INVALID_PD:
209 	case OCRDMA_MBX_STATUS_INVALID_CQ:
210 	case OCRDMA_MBX_STATUS_INVALID_SRQ_ID:
211 	case OCRDMA_MBX_STATUS_INVALID_QP:
212 	case OCRDMA_MBX_STATUS_INVALID_CHANGE:
213 	case OCRDMA_MBX_STATUS_MTU_EXCEEDS:
214 	case OCRDMA_MBX_STATUS_INVALID_RNR_NAK_TIMER:
215 	case OCRDMA_MBX_STATUS_PKEY_INDEX_INVALID:
216 	case OCRDMA_MBX_STATUS_PKEY_INDEX_EXCEEDS:
217 	case OCRDMA_MBX_STATUS_ILLEGAL_FIELD:
218 	case OCRDMA_MBX_STATUS_INVALID_PBL_ENTRY:
219 	case OCRDMA_MBX_STATUS_INVALID_LKEY:
220 	case OCRDMA_MBX_STATUS_INVALID_VA:
221 	case OCRDMA_MBX_STATUS_INVALID_LENGTH:
222 	case OCRDMA_MBX_STATUS_INVALID_FBO:
223 	case OCRDMA_MBX_STATUS_INVALID_ACC_RIGHTS:
224 	case OCRDMA_MBX_STATUS_INVALID_PBE_SIZE:
225 	case OCRDMA_MBX_STATUS_ATOMIC_OPS_UNSUP:
226 	case OCRDMA_MBX_STATUS_SRQ_ERROR:
227 	case OCRDMA_MBX_STATUS_SRQ_SIZE_UNDERUNS:
228 		err_num = -EINVAL;
229 		break;
230 
231 	case OCRDMA_MBX_STATUS_PD_INUSE:
232 	case OCRDMA_MBX_STATUS_QP_BOUND:
233 	case OCRDMA_MBX_STATUS_MW_STILL_BOUND:
234 	case OCRDMA_MBX_STATUS_MW_BOUND:
235 		err_num = -EBUSY;
236 		break;
237 
238 	case OCRDMA_MBX_STATUS_RECVQ_RQE_EXCEEDS:
239 	case OCRDMA_MBX_STATUS_SGE_RECV_EXCEEDS:
240 	case OCRDMA_MBX_STATUS_RQE_EXCEEDS:
241 	case OCRDMA_MBX_STATUS_SRQ_LIMIT_EXCEEDS:
242 	case OCRDMA_MBX_STATUS_ORD_EXCEEDS:
243 	case OCRDMA_MBX_STATUS_IRD_EXCEEDS:
244 	case OCRDMA_MBX_STATUS_SENDQ_WQE_EXCEEDS:
245 	case OCRDMA_MBX_STATUS_SGE_SEND_EXCEEDS:
246 	case OCRDMA_MBX_STATUS_SGE_WRITE_EXCEEDS:
247 		err_num = -ENOBUFS;
248 		break;
249 
250 	case OCRDMA_MBX_STATUS_FAILED:
251 		switch (add_status) {
252 		case OCRDMA_MBX_ADDI_STATUS_INSUFFICIENT_RESOURCES:
253 			err_num = -EAGAIN;
254 			break;
255 		default:
256 			err_num = -EFAULT;
257 		}
258 		break;
259 	default:
260 		err_num = -EFAULT;
261 	}
262 	return err_num;
263 }
264 
port_speed_string(struct ocrdma_dev * dev)265 char *port_speed_string(struct ocrdma_dev *dev)
266 {
267 	char *str = "";
268 	u16 speeds_supported;
269 
270 	speeds_supported = dev->phy.fixed_speeds_supported |
271 				dev->phy.auto_speeds_supported;
272 	if (speeds_supported & OCRDMA_PHY_SPEED_40GBPS)
273 		str = "40Gbps ";
274 	else if (speeds_supported & OCRDMA_PHY_SPEED_10GBPS)
275 		str = "10Gbps ";
276 	else if (speeds_supported & OCRDMA_PHY_SPEED_1GBPS)
277 		str = "1Gbps ";
278 
279 	return str;
280 }
281 
ocrdma_get_mbx_cqe_errno(u16 cqe_status)282 static int ocrdma_get_mbx_cqe_errno(u16 cqe_status)
283 {
284 	int err_num = -EINVAL;
285 
286 	switch (cqe_status) {
287 	case OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_PRIVILEDGES:
288 		err_num = -EPERM;
289 		break;
290 	case OCRDMA_MBX_CQE_STATUS_INVALID_PARAMETER:
291 		err_num = -EINVAL;
292 		break;
293 	case OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_RESOURCES:
294 	case OCRDMA_MBX_CQE_STATUS_QUEUE_FLUSHING:
295 		err_num = -EINVAL;
296 		break;
297 	case OCRDMA_MBX_CQE_STATUS_DMA_FAILED:
298 	default:
299 		err_num = -EINVAL;
300 		break;
301 	}
302 	return err_num;
303 }
304 
ocrdma_ring_cq_db(struct ocrdma_dev * dev,u16 cq_id,bool armed,bool solicited,u16 cqe_popped)305 void ocrdma_ring_cq_db(struct ocrdma_dev *dev, u16 cq_id, bool armed,
306 		       bool solicited, u16 cqe_popped)
307 {
308 	u32 val = cq_id & OCRDMA_DB_CQ_RING_ID_MASK;
309 
310 	val |= ((cq_id & OCRDMA_DB_CQ_RING_ID_EXT_MASK) <<
311 	     OCRDMA_DB_CQ_RING_ID_EXT_MASK_SHIFT);
312 
313 	if (armed)
314 		val |= (1 << OCRDMA_DB_CQ_REARM_SHIFT);
315 	if (solicited)
316 		val |= (1 << OCRDMA_DB_CQ_SOLICIT_SHIFT);
317 	val |= (cqe_popped << OCRDMA_DB_CQ_NUM_POPPED_SHIFT);
318 	iowrite32(val, dev->nic_info.db + OCRDMA_DB_CQ_OFFSET);
319 }
320 
ocrdma_ring_mq_db(struct ocrdma_dev * dev)321 static void ocrdma_ring_mq_db(struct ocrdma_dev *dev)
322 {
323 	u32 val = 0;
324 
325 	val |= dev->mq.sq.id & OCRDMA_MQ_ID_MASK;
326 	val |= 1 << OCRDMA_MQ_NUM_MQE_SHIFT;
327 	iowrite32(val, dev->nic_info.db + OCRDMA_DB_MQ_OFFSET);
328 }
329 
ocrdma_ring_eq_db(struct ocrdma_dev * dev,u16 eq_id,bool arm,bool clear_int,u16 num_eqe)330 static void ocrdma_ring_eq_db(struct ocrdma_dev *dev, u16 eq_id,
331 			      bool arm, bool clear_int, u16 num_eqe)
332 {
333 	u32 val = 0;
334 
335 	val |= eq_id & OCRDMA_EQ_ID_MASK;
336 	val |= ((eq_id & OCRDMA_EQ_ID_EXT_MASK) << OCRDMA_EQ_ID_EXT_MASK_SHIFT);
337 	if (arm)
338 		val |= (1 << OCRDMA_REARM_SHIFT);
339 	if (clear_int)
340 		val |= (1 << OCRDMA_EQ_CLR_SHIFT);
341 	val |= (1 << OCRDMA_EQ_TYPE_SHIFT);
342 	val |= (num_eqe << OCRDMA_NUM_EQE_SHIFT);
343 	iowrite32(val, dev->nic_info.db + OCRDMA_DB_EQ_OFFSET);
344 }
345 
ocrdma_init_mch(struct ocrdma_mbx_hdr * cmd_hdr,u8 opcode,u8 subsys,u32 cmd_len)346 static void ocrdma_init_mch(struct ocrdma_mbx_hdr *cmd_hdr,
347 			    u8 opcode, u8 subsys, u32 cmd_len)
348 {
349 	cmd_hdr->subsys_op = (opcode | (subsys << OCRDMA_MCH_SUBSYS_SHIFT));
350 	cmd_hdr->timeout = 20; /* seconds */
351 	cmd_hdr->cmd_len = cmd_len - sizeof(struct ocrdma_mbx_hdr);
352 }
353 
ocrdma_init_emb_mqe(u8 opcode,u32 cmd_len)354 static void *ocrdma_init_emb_mqe(u8 opcode, u32 cmd_len)
355 {
356 	struct ocrdma_mqe *mqe;
357 
358 	mqe = kzalloc(sizeof(struct ocrdma_mqe), GFP_KERNEL);
359 	if (!mqe)
360 		return NULL;
361 	mqe->hdr.spcl_sge_cnt_emb |=
362 		(OCRDMA_MQE_EMBEDDED << OCRDMA_MQE_HDR_EMB_SHIFT) &
363 					OCRDMA_MQE_HDR_EMB_MASK;
364 	mqe->hdr.pyld_len = cmd_len - sizeof(struct ocrdma_mqe_hdr);
365 
366 	ocrdma_init_mch(&mqe->u.emb_req.mch, opcode, OCRDMA_SUBSYS_ROCE,
367 			mqe->hdr.pyld_len);
368 	return mqe;
369 }
370 
ocrdma_free_q(struct ocrdma_dev * dev,struct ocrdma_queue_info * q)371 static void ocrdma_free_q(struct ocrdma_dev *dev, struct ocrdma_queue_info *q)
372 {
373 	dma_free_coherent(&dev->nic_info.pdev->dev, q->size, q->va, q->dma);
374 }
375 
ocrdma_alloc_q(struct ocrdma_dev * dev,struct ocrdma_queue_info * q,u16 len,u16 entry_size)376 static int ocrdma_alloc_q(struct ocrdma_dev *dev,
377 			  struct ocrdma_queue_info *q, u16 len, u16 entry_size)
378 {
379 	memset(q, 0, sizeof(*q));
380 	q->len = len;
381 	q->entry_size = entry_size;
382 	q->size = len * entry_size;
383 	q->va = dma_alloc_coherent(&dev->nic_info.pdev->dev, q->size, &q->dma,
384 				   GFP_KERNEL);
385 	if (!q->va)
386 		return -ENOMEM;
387 	return 0;
388 }
389 
ocrdma_build_q_pages(struct ocrdma_pa * q_pa,int cnt,dma_addr_t host_pa,int hw_page_size)390 static void ocrdma_build_q_pages(struct ocrdma_pa *q_pa, int cnt,
391 					dma_addr_t host_pa, int hw_page_size)
392 {
393 	int i;
394 
395 	for (i = 0; i < cnt; i++) {
396 		q_pa[i].lo = (u32) (host_pa & 0xffffffff);
397 		q_pa[i].hi = (u32) upper_32_bits(host_pa);
398 		host_pa += hw_page_size;
399 	}
400 }
401 
ocrdma_mbx_delete_q(struct ocrdma_dev * dev,struct ocrdma_queue_info * q,int queue_type)402 static int ocrdma_mbx_delete_q(struct ocrdma_dev *dev,
403 			       struct ocrdma_queue_info *q, int queue_type)
404 {
405 	u8 opcode = 0;
406 	int status;
407 	struct ocrdma_delete_q_req *cmd = dev->mbx_cmd;
408 
409 	switch (queue_type) {
410 	case QTYPE_MCCQ:
411 		opcode = OCRDMA_CMD_DELETE_MQ;
412 		break;
413 	case QTYPE_CQ:
414 		opcode = OCRDMA_CMD_DELETE_CQ;
415 		break;
416 	case QTYPE_EQ:
417 		opcode = OCRDMA_CMD_DELETE_EQ;
418 		break;
419 	default:
420 		BUG();
421 	}
422 	memset(cmd, 0, sizeof(*cmd));
423 	ocrdma_init_mch(&cmd->req, opcode, OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
424 	cmd->id = q->id;
425 
426 	status = be_roce_mcc_cmd(dev->nic_info.netdev,
427 				 cmd, sizeof(*cmd), NULL, NULL);
428 	if (!status)
429 		q->created = false;
430 	return status;
431 }
432 
ocrdma_mbx_create_eq(struct ocrdma_dev * dev,struct ocrdma_eq * eq)433 static int ocrdma_mbx_create_eq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
434 {
435 	int status;
436 	struct ocrdma_create_eq_req *cmd = dev->mbx_cmd;
437 	struct ocrdma_create_eq_rsp *rsp = dev->mbx_cmd;
438 
439 	memset(cmd, 0, sizeof(*cmd));
440 	ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_EQ, OCRDMA_SUBSYS_COMMON,
441 			sizeof(*cmd));
442 
443 	cmd->req.rsvd_version = 2;
444 	cmd->num_pages = 4;
445 	cmd->valid = OCRDMA_CREATE_EQ_VALID;
446 	cmd->cnt = 4 << OCRDMA_CREATE_EQ_CNT_SHIFT;
447 
448 	ocrdma_build_q_pages(&cmd->pa[0], cmd->num_pages, eq->q.dma,
449 			     PAGE_SIZE_4K);
450 	status = be_roce_mcc_cmd(dev->nic_info.netdev, cmd, sizeof(*cmd), NULL,
451 				 NULL);
452 	if (!status) {
453 		eq->q.id = rsp->vector_eqid & 0xffff;
454 		eq->vector = (rsp->vector_eqid >> 16) & 0xffff;
455 		eq->q.created = true;
456 	}
457 	return status;
458 }
459 
ocrdma_create_eq(struct ocrdma_dev * dev,struct ocrdma_eq * eq,u16 q_len)460 static int ocrdma_create_eq(struct ocrdma_dev *dev,
461 			    struct ocrdma_eq *eq, u16 q_len)
462 {
463 	int status;
464 
465 	status = ocrdma_alloc_q(dev, &eq->q, OCRDMA_EQ_LEN,
466 				sizeof(struct ocrdma_eqe));
467 	if (status)
468 		return status;
469 
470 	status = ocrdma_mbx_create_eq(dev, eq);
471 	if (status)
472 		goto mbx_err;
473 	eq->dev = dev;
474 	ocrdma_ring_eq_db(dev, eq->q.id, true, true, 0);
475 
476 	return 0;
477 mbx_err:
478 	ocrdma_free_q(dev, &eq->q);
479 	return status;
480 }
481 
ocrdma_get_irq(struct ocrdma_dev * dev,struct ocrdma_eq * eq)482 int ocrdma_get_irq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
483 {
484 	int irq;
485 
486 	if (dev->nic_info.intr_mode == BE_INTERRUPT_MODE_INTX)
487 		irq = dev->nic_info.pdev->irq;
488 	else
489 		irq = dev->nic_info.msix.vector_list[eq->vector];
490 	return irq;
491 }
492 
_ocrdma_destroy_eq(struct ocrdma_dev * dev,struct ocrdma_eq * eq)493 static void _ocrdma_destroy_eq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
494 {
495 	if (eq->q.created) {
496 		ocrdma_mbx_delete_q(dev, &eq->q, QTYPE_EQ);
497 		ocrdma_free_q(dev, &eq->q);
498 	}
499 }
500 
ocrdma_destroy_eq(struct ocrdma_dev * dev,struct ocrdma_eq * eq)501 static void ocrdma_destroy_eq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
502 {
503 	int irq;
504 
505 	/* disarm EQ so that interrupts are not generated
506 	 * during freeing and EQ delete is in progress.
507 	 */
508 	ocrdma_ring_eq_db(dev, eq->q.id, false, false, 0);
509 
510 	irq = ocrdma_get_irq(dev, eq);
511 	free_irq(irq, eq);
512 	_ocrdma_destroy_eq(dev, eq);
513 }
514 
ocrdma_destroy_eqs(struct ocrdma_dev * dev)515 static void ocrdma_destroy_eqs(struct ocrdma_dev *dev)
516 {
517 	int i;
518 
519 	for (i = 0; i < dev->eq_cnt; i++)
520 		ocrdma_destroy_eq(dev, &dev->eq_tbl[i]);
521 }
522 
ocrdma_mbx_mq_cq_create(struct ocrdma_dev * dev,struct ocrdma_queue_info * cq,struct ocrdma_queue_info * eq)523 static int ocrdma_mbx_mq_cq_create(struct ocrdma_dev *dev,
524 				   struct ocrdma_queue_info *cq,
525 				   struct ocrdma_queue_info *eq)
526 {
527 	struct ocrdma_create_cq_cmd *cmd = dev->mbx_cmd;
528 	struct ocrdma_create_cq_cmd_rsp *rsp = dev->mbx_cmd;
529 	int status;
530 
531 	memset(cmd, 0, sizeof(*cmd));
532 	ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_CQ,
533 			OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
534 
535 	cmd->req.rsvd_version = OCRDMA_CREATE_CQ_VER2;
536 	cmd->pgsz_pgcnt = (cq->size / OCRDMA_MIN_Q_PAGE_SIZE) <<
537 		OCRDMA_CREATE_CQ_PAGE_SIZE_SHIFT;
538 	cmd->pgsz_pgcnt |= PAGES_4K_SPANNED(cq->va, cq->size);
539 
540 	cmd->ev_cnt_flags = OCRDMA_CREATE_CQ_DEF_FLAGS;
541 	cmd->eqn = eq->id;
542 	cmd->pdid_cqecnt = cq->size / sizeof(struct ocrdma_mcqe);
543 
544 	ocrdma_build_q_pages(&cmd->pa[0], cq->size / OCRDMA_MIN_Q_PAGE_SIZE,
545 			     cq->dma, PAGE_SIZE_4K);
546 	status = be_roce_mcc_cmd(dev->nic_info.netdev,
547 				 cmd, sizeof(*cmd), NULL, NULL);
548 	if (!status) {
549 		cq->id = (u16) (rsp->cq_id & OCRDMA_CREATE_CQ_RSP_CQ_ID_MASK);
550 		cq->created = true;
551 	}
552 	return status;
553 }
554 
ocrdma_encoded_q_len(int q_len)555 static u32 ocrdma_encoded_q_len(int q_len)
556 {
557 	u32 len_encoded = fls(q_len);	/* log2(len) + 1 */
558 
559 	if (len_encoded == 16)
560 		len_encoded = 0;
561 	return len_encoded;
562 }
563 
ocrdma_mbx_create_mq(struct ocrdma_dev * dev,struct ocrdma_queue_info * mq,struct ocrdma_queue_info * cq)564 static int ocrdma_mbx_create_mq(struct ocrdma_dev *dev,
565 				struct ocrdma_queue_info *mq,
566 				struct ocrdma_queue_info *cq)
567 {
568 	int num_pages, status;
569 	struct ocrdma_create_mq_req *cmd = dev->mbx_cmd;
570 	struct ocrdma_create_mq_rsp *rsp = dev->mbx_cmd;
571 	struct ocrdma_pa *pa;
572 
573 	memset(cmd, 0, sizeof(*cmd));
574 	num_pages = PAGES_4K_SPANNED(mq->va, mq->size);
575 
576 	ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_MQ_EXT,
577 			OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
578 	cmd->req.rsvd_version = 1;
579 	cmd->cqid_pages = num_pages;
580 	cmd->cqid_pages |= (cq->id << OCRDMA_CREATE_MQ_CQ_ID_SHIFT);
581 	cmd->async_cqid_valid = OCRDMA_CREATE_MQ_ASYNC_CQ_VALID;
582 
583 	cmd->async_event_bitmap = BIT(OCRDMA_ASYNC_GRP5_EVE_CODE);
584 	cmd->async_event_bitmap |= BIT(OCRDMA_ASYNC_RDMA_EVE_CODE);
585 	/* Request link events on this  MQ. */
586 	cmd->async_event_bitmap |= BIT(OCRDMA_ASYNC_LINK_EVE_CODE);
587 
588 	cmd->async_cqid_ringsize = cq->id;
589 	cmd->async_cqid_ringsize |= (ocrdma_encoded_q_len(mq->len) <<
590 				OCRDMA_CREATE_MQ_RING_SIZE_SHIFT);
591 	cmd->valid = OCRDMA_CREATE_MQ_VALID;
592 	pa = &cmd->pa[0];
593 
594 	ocrdma_build_q_pages(pa, num_pages, mq->dma, PAGE_SIZE_4K);
595 	status = be_roce_mcc_cmd(dev->nic_info.netdev,
596 				 cmd, sizeof(*cmd), NULL, NULL);
597 	if (!status) {
598 		mq->id = rsp->id;
599 		mq->created = true;
600 	}
601 	return status;
602 }
603 
ocrdma_create_mq(struct ocrdma_dev * dev)604 static int ocrdma_create_mq(struct ocrdma_dev *dev)
605 {
606 	int status;
607 
608 	/* Alloc completion queue for Mailbox queue */
609 	status = ocrdma_alloc_q(dev, &dev->mq.cq, OCRDMA_MQ_CQ_LEN,
610 				sizeof(struct ocrdma_mcqe));
611 	if (status)
612 		goto alloc_err;
613 
614 	dev->eq_tbl[0].cq_cnt++;
615 	status = ocrdma_mbx_mq_cq_create(dev, &dev->mq.cq, &dev->eq_tbl[0].q);
616 	if (status)
617 		goto mbx_cq_free;
618 
619 	memset(&dev->mqe_ctx, 0, sizeof(dev->mqe_ctx));
620 	init_waitqueue_head(&dev->mqe_ctx.cmd_wait);
621 	mutex_init(&dev->mqe_ctx.lock);
622 
623 	/* Alloc Mailbox queue */
624 	status = ocrdma_alloc_q(dev, &dev->mq.sq, OCRDMA_MQ_LEN,
625 				sizeof(struct ocrdma_mqe));
626 	if (status)
627 		goto mbx_cq_destroy;
628 	status = ocrdma_mbx_create_mq(dev, &dev->mq.sq, &dev->mq.cq);
629 	if (status)
630 		goto mbx_q_free;
631 	ocrdma_ring_cq_db(dev, dev->mq.cq.id, true, false, 0);
632 	return 0;
633 
634 mbx_q_free:
635 	ocrdma_free_q(dev, &dev->mq.sq);
636 mbx_cq_destroy:
637 	ocrdma_mbx_delete_q(dev, &dev->mq.cq, QTYPE_CQ);
638 mbx_cq_free:
639 	ocrdma_free_q(dev, &dev->mq.cq);
640 alloc_err:
641 	return status;
642 }
643 
ocrdma_destroy_mq(struct ocrdma_dev * dev)644 static void ocrdma_destroy_mq(struct ocrdma_dev *dev)
645 {
646 	struct ocrdma_queue_info *mbxq, *cq;
647 
648 	/* mqe_ctx lock synchronizes with any other pending cmds. */
649 	mutex_lock(&dev->mqe_ctx.lock);
650 	mbxq = &dev->mq.sq;
651 	if (mbxq->created) {
652 		ocrdma_mbx_delete_q(dev, mbxq, QTYPE_MCCQ);
653 		ocrdma_free_q(dev, mbxq);
654 	}
655 	mutex_unlock(&dev->mqe_ctx.lock);
656 
657 	cq = &dev->mq.cq;
658 	if (cq->created) {
659 		ocrdma_mbx_delete_q(dev, cq, QTYPE_CQ);
660 		ocrdma_free_q(dev, cq);
661 	}
662 }
663 
ocrdma_process_qpcat_error(struct ocrdma_dev * dev,struct ocrdma_qp * qp)664 static void ocrdma_process_qpcat_error(struct ocrdma_dev *dev,
665 				       struct ocrdma_qp *qp)
666 {
667 	enum ib_qp_state new_ib_qps = IB_QPS_ERR;
668 	enum ib_qp_state old_ib_qps;
669 
670 	if (qp == NULL)
671 		BUG();
672 	ocrdma_qp_state_change(qp, new_ib_qps, &old_ib_qps);
673 }
674 
ocrdma_dispatch_ibevent(struct ocrdma_dev * dev,struct ocrdma_ae_mcqe * cqe)675 static void ocrdma_dispatch_ibevent(struct ocrdma_dev *dev,
676 				    struct ocrdma_ae_mcqe *cqe)
677 {
678 	struct ocrdma_qp *qp = NULL;
679 	struct ocrdma_cq *cq = NULL;
680 	struct ib_event ib_evt;
681 	int cq_event = 0;
682 	int qp_event = 1;
683 	int srq_event = 0;
684 	int dev_event = 0;
685 	int type = (cqe->valid_ae_event & OCRDMA_AE_MCQE_EVENT_TYPE_MASK) >>
686 	    OCRDMA_AE_MCQE_EVENT_TYPE_SHIFT;
687 	u16 qpid = cqe->qpvalid_qpid & OCRDMA_AE_MCQE_QPID_MASK;
688 	u16 cqid = cqe->cqvalid_cqid & OCRDMA_AE_MCQE_CQID_MASK;
689 
690 	/*
691 	 * Some FW version returns wrong qp or cq ids in CQEs.
692 	 * Checking whether the IDs are valid
693 	 */
694 
695 	if (cqe->qpvalid_qpid & OCRDMA_AE_MCQE_QPVALID) {
696 		if (qpid < dev->attr.max_qp)
697 			qp = dev->qp_tbl[qpid];
698 		if (qp == NULL) {
699 			pr_err("ocrdma%d:Async event - qpid %u is not valid\n",
700 			       dev->id, qpid);
701 			return;
702 		}
703 	}
704 
705 	if (cqe->cqvalid_cqid & OCRDMA_AE_MCQE_CQVALID) {
706 		if (cqid < dev->attr.max_cq)
707 			cq = dev->cq_tbl[cqid];
708 		if (cq == NULL) {
709 			pr_err("ocrdma%d:Async event - cqid %u is not valid\n",
710 			       dev->id, cqid);
711 			return;
712 		}
713 	}
714 
715 	memset(&ib_evt, 0, sizeof(ib_evt));
716 
717 	ib_evt.device = &dev->ibdev;
718 
719 	switch (type) {
720 	case OCRDMA_CQ_ERROR:
721 		ib_evt.element.cq = &cq->ibcq;
722 		ib_evt.event = IB_EVENT_CQ_ERR;
723 		cq_event = 1;
724 		qp_event = 0;
725 		break;
726 	case OCRDMA_CQ_OVERRUN_ERROR:
727 		ib_evt.element.cq = &cq->ibcq;
728 		ib_evt.event = IB_EVENT_CQ_ERR;
729 		cq_event = 1;
730 		qp_event = 0;
731 		break;
732 	case OCRDMA_CQ_QPCAT_ERROR:
733 		ib_evt.element.qp = &qp->ibqp;
734 		ib_evt.event = IB_EVENT_QP_FATAL;
735 		ocrdma_process_qpcat_error(dev, qp);
736 		break;
737 	case OCRDMA_QP_ACCESS_ERROR:
738 		ib_evt.element.qp = &qp->ibqp;
739 		ib_evt.event = IB_EVENT_QP_ACCESS_ERR;
740 		break;
741 	case OCRDMA_QP_COMM_EST_EVENT:
742 		ib_evt.element.qp = &qp->ibqp;
743 		ib_evt.event = IB_EVENT_COMM_EST;
744 		break;
745 	case OCRDMA_SQ_DRAINED_EVENT:
746 		ib_evt.element.qp = &qp->ibqp;
747 		ib_evt.event = IB_EVENT_SQ_DRAINED;
748 		break;
749 	case OCRDMA_DEVICE_FATAL_EVENT:
750 		ib_evt.element.port_num = 1;
751 		ib_evt.event = IB_EVENT_DEVICE_FATAL;
752 		qp_event = 0;
753 		dev_event = 1;
754 		break;
755 	case OCRDMA_SRQCAT_ERROR:
756 		ib_evt.element.srq = &qp->srq->ibsrq;
757 		ib_evt.event = IB_EVENT_SRQ_ERR;
758 		srq_event = 1;
759 		qp_event = 0;
760 		break;
761 	case OCRDMA_SRQ_LIMIT_EVENT:
762 		ib_evt.element.srq = &qp->srq->ibsrq;
763 		ib_evt.event = IB_EVENT_SRQ_LIMIT_REACHED;
764 		srq_event = 1;
765 		qp_event = 0;
766 		break;
767 	case OCRDMA_QP_LAST_WQE_EVENT:
768 		ib_evt.element.qp = &qp->ibqp;
769 		ib_evt.event = IB_EVENT_QP_LAST_WQE_REACHED;
770 		break;
771 	default:
772 		cq_event = 0;
773 		qp_event = 0;
774 		srq_event = 0;
775 		dev_event = 0;
776 		pr_err("%s() unknown type=0x%x\n", __func__, type);
777 		break;
778 	}
779 
780 	if (type < OCRDMA_MAX_ASYNC_ERRORS)
781 		atomic_inc(&dev->async_err_stats[type]);
782 
783 	if (qp_event) {
784 		if (qp->ibqp.event_handler)
785 			qp->ibqp.event_handler(&ib_evt, qp->ibqp.qp_context);
786 	} else if (cq_event) {
787 		if (cq->ibcq.event_handler)
788 			cq->ibcq.event_handler(&ib_evt, cq->ibcq.cq_context);
789 	} else if (srq_event) {
790 		if (qp->srq->ibsrq.event_handler)
791 			qp->srq->ibsrq.event_handler(&ib_evt,
792 						     qp->srq->ibsrq.
793 						     srq_context);
794 	} else if (dev_event) {
795 		dev_err(&dev->ibdev.dev, "Fatal event received\n");
796 		ib_dispatch_event(&ib_evt);
797 	}
798 
799 }
800 
ocrdma_process_grp5_aync(struct ocrdma_dev * dev,struct ocrdma_ae_mcqe * cqe)801 static void ocrdma_process_grp5_aync(struct ocrdma_dev *dev,
802 					struct ocrdma_ae_mcqe *cqe)
803 {
804 	struct ocrdma_ae_pvid_mcqe *evt;
805 	int type = (cqe->valid_ae_event & OCRDMA_AE_MCQE_EVENT_TYPE_MASK) >>
806 			OCRDMA_AE_MCQE_EVENT_TYPE_SHIFT;
807 
808 	switch (type) {
809 	case OCRDMA_ASYNC_EVENT_PVID_STATE:
810 		evt = (struct ocrdma_ae_pvid_mcqe *)cqe;
811 		if ((evt->tag_enabled & OCRDMA_AE_PVID_MCQE_ENABLED_MASK) >>
812 			OCRDMA_AE_PVID_MCQE_ENABLED_SHIFT)
813 			dev->pvid = ((evt->tag_enabled &
814 					OCRDMA_AE_PVID_MCQE_TAG_MASK) >>
815 					OCRDMA_AE_PVID_MCQE_TAG_SHIFT);
816 		break;
817 
818 	case OCRDMA_ASYNC_EVENT_COS_VALUE:
819 		atomic_set(&dev->update_sl, 1);
820 		break;
821 	default:
822 		/* Not interested evts. */
823 		break;
824 	}
825 }
826 
ocrdma_process_link_state(struct ocrdma_dev * dev,struct ocrdma_ae_mcqe * cqe)827 static void ocrdma_process_link_state(struct ocrdma_dev *dev,
828 				      struct ocrdma_ae_mcqe *cqe)
829 {
830 	struct ocrdma_ae_lnkst_mcqe *evt;
831 	u8 lstate;
832 
833 	evt = (struct ocrdma_ae_lnkst_mcqe *)cqe;
834 	lstate = ocrdma_get_ae_link_state(evt->speed_state_ptn);
835 
836 	if (!(lstate & OCRDMA_AE_LSC_LLINK_MASK))
837 		return;
838 
839 	if (dev->flags & OCRDMA_FLAGS_LINK_STATUS_INIT)
840 		ocrdma_update_link_state(dev, (lstate & OCRDMA_LINK_ST_MASK));
841 }
842 
ocrdma_process_acqe(struct ocrdma_dev * dev,void * ae_cqe)843 static void ocrdma_process_acqe(struct ocrdma_dev *dev, void *ae_cqe)
844 {
845 	/* async CQE processing */
846 	struct ocrdma_ae_mcqe *cqe = ae_cqe;
847 	u32 evt_code = (cqe->valid_ae_event & OCRDMA_AE_MCQE_EVENT_CODE_MASK) >>
848 			OCRDMA_AE_MCQE_EVENT_CODE_SHIFT;
849 	switch (evt_code) {
850 	case OCRDMA_ASYNC_LINK_EVE_CODE:
851 		ocrdma_process_link_state(dev, cqe);
852 		break;
853 	case OCRDMA_ASYNC_RDMA_EVE_CODE:
854 		ocrdma_dispatch_ibevent(dev, cqe);
855 		break;
856 	case OCRDMA_ASYNC_GRP5_EVE_CODE:
857 		ocrdma_process_grp5_aync(dev, cqe);
858 		break;
859 	default:
860 		pr_err("%s(%d) invalid evt code=0x%x\n", __func__,
861 		       dev->id, evt_code);
862 	}
863 }
864 
ocrdma_process_mcqe(struct ocrdma_dev * dev,struct ocrdma_mcqe * cqe)865 static void ocrdma_process_mcqe(struct ocrdma_dev *dev, struct ocrdma_mcqe *cqe)
866 {
867 	if (dev->mqe_ctx.tag == cqe->tag_lo && dev->mqe_ctx.cmd_done == false) {
868 		dev->mqe_ctx.cqe_status = (cqe->status &
869 		     OCRDMA_MCQE_STATUS_MASK) >> OCRDMA_MCQE_STATUS_SHIFT;
870 		dev->mqe_ctx.ext_status =
871 		    (cqe->status & OCRDMA_MCQE_ESTATUS_MASK)
872 		    >> OCRDMA_MCQE_ESTATUS_SHIFT;
873 		dev->mqe_ctx.cmd_done = true;
874 		wake_up(&dev->mqe_ctx.cmd_wait);
875 	} else
876 		pr_err("%s() cqe for invalid tag0x%x.expected=0x%x\n",
877 		       __func__, cqe->tag_lo, dev->mqe_ctx.tag);
878 }
879 
ocrdma_mq_cq_handler(struct ocrdma_dev * dev,u16 cq_id)880 static int ocrdma_mq_cq_handler(struct ocrdma_dev *dev, u16 cq_id)
881 {
882 	u16 cqe_popped = 0;
883 	struct ocrdma_mcqe *cqe;
884 
885 	while (1) {
886 		cqe = ocrdma_get_mcqe(dev);
887 		if (cqe == NULL)
888 			break;
889 		ocrdma_le32_to_cpu(cqe, sizeof(*cqe));
890 		cqe_popped += 1;
891 		if (cqe->valid_ae_cmpl_cons & OCRDMA_MCQE_AE_MASK)
892 			ocrdma_process_acqe(dev, cqe);
893 		else if (cqe->valid_ae_cmpl_cons & OCRDMA_MCQE_CMPL_MASK)
894 			ocrdma_process_mcqe(dev, cqe);
895 		memset(cqe, 0, sizeof(struct ocrdma_mcqe));
896 		ocrdma_mcq_inc_tail(dev);
897 	}
898 	ocrdma_ring_cq_db(dev, dev->mq.cq.id, true, false, cqe_popped);
899 	return 0;
900 }
901 
_ocrdma_qp_buddy_cq_handler(struct ocrdma_dev * dev,struct ocrdma_cq * cq,bool sq)902 static struct ocrdma_cq *_ocrdma_qp_buddy_cq_handler(struct ocrdma_dev *dev,
903 				struct ocrdma_cq *cq, bool sq)
904 {
905 	struct ocrdma_qp *qp;
906 	struct list_head *cur;
907 	struct ocrdma_cq *bcq = NULL;
908 	struct list_head *head = sq?(&cq->sq_head):(&cq->rq_head);
909 
910 	list_for_each(cur, head) {
911 		if (sq)
912 			qp = list_entry(cur, struct ocrdma_qp, sq_entry);
913 		else
914 			qp = list_entry(cur, struct ocrdma_qp, rq_entry);
915 
916 		if (qp->srq)
917 			continue;
918 		/* if wq and rq share the same cq, than comp_handler
919 		 * is already invoked.
920 		 */
921 		if (qp->sq_cq == qp->rq_cq)
922 			continue;
923 		/* if completion came on sq, rq's cq is buddy cq.
924 		 * if completion came on rq, sq's cq is buddy cq.
925 		 */
926 		if (qp->sq_cq == cq)
927 			bcq = qp->rq_cq;
928 		else
929 			bcq = qp->sq_cq;
930 		return bcq;
931 	}
932 	return NULL;
933 }
934 
ocrdma_qp_buddy_cq_handler(struct ocrdma_dev * dev,struct ocrdma_cq * cq)935 static void ocrdma_qp_buddy_cq_handler(struct ocrdma_dev *dev,
936 				       struct ocrdma_cq *cq)
937 {
938 	unsigned long flags;
939 	struct ocrdma_cq *bcq = NULL;
940 
941 	/* Go through list of QPs in error state which are using this CQ
942 	 * and invoke its callback handler to trigger CQE processing for
943 	 * error/flushed CQE. It is rare to find more than few entries in
944 	 * this list as most consumers stops after getting error CQE.
945 	 * List is traversed only once when a matching buddy cq found for a QP.
946 	 */
947 	spin_lock_irqsave(&dev->flush_q_lock, flags);
948 	/* Check if buddy CQ is present.
949 	 * true - Check for  SQ CQ
950 	 * false - Check for RQ CQ
951 	 */
952 	bcq = _ocrdma_qp_buddy_cq_handler(dev, cq, true);
953 	if (bcq == NULL)
954 		bcq = _ocrdma_qp_buddy_cq_handler(dev, cq, false);
955 	spin_unlock_irqrestore(&dev->flush_q_lock, flags);
956 
957 	/* if there is valid buddy cq, look for its completion handler */
958 	if (bcq && bcq->ibcq.comp_handler) {
959 		spin_lock_irqsave(&bcq->comp_handler_lock, flags);
960 		(*bcq->ibcq.comp_handler) (&bcq->ibcq, bcq->ibcq.cq_context);
961 		spin_unlock_irqrestore(&bcq->comp_handler_lock, flags);
962 	}
963 }
964 
ocrdma_qp_cq_handler(struct ocrdma_dev * dev,u16 cq_idx)965 static void ocrdma_qp_cq_handler(struct ocrdma_dev *dev, u16 cq_idx)
966 {
967 	unsigned long flags;
968 	struct ocrdma_cq *cq;
969 
970 	if (cq_idx >= OCRDMA_MAX_CQ)
971 		BUG();
972 
973 	cq = dev->cq_tbl[cq_idx];
974 	if (cq == NULL)
975 		return;
976 
977 	if (cq->ibcq.comp_handler) {
978 		spin_lock_irqsave(&cq->comp_handler_lock, flags);
979 		(*cq->ibcq.comp_handler) (&cq->ibcq, cq->ibcq.cq_context);
980 		spin_unlock_irqrestore(&cq->comp_handler_lock, flags);
981 	}
982 	ocrdma_qp_buddy_cq_handler(dev, cq);
983 }
984 
ocrdma_cq_handler(struct ocrdma_dev * dev,u16 cq_id)985 static void ocrdma_cq_handler(struct ocrdma_dev *dev, u16 cq_id)
986 {
987 	/* process the MQ-CQE. */
988 	if (cq_id == dev->mq.cq.id)
989 		ocrdma_mq_cq_handler(dev, cq_id);
990 	else
991 		ocrdma_qp_cq_handler(dev, cq_id);
992 }
993 
ocrdma_irq_handler(int irq,void * handle)994 static irqreturn_t ocrdma_irq_handler(int irq, void *handle)
995 {
996 	struct ocrdma_eq *eq = handle;
997 	struct ocrdma_dev *dev = eq->dev;
998 	struct ocrdma_eqe eqe;
999 	struct ocrdma_eqe *ptr;
1000 	u16 cq_id;
1001 	u8 mcode;
1002 	int budget = eq->cq_cnt;
1003 
1004 	do {
1005 		ptr = ocrdma_get_eqe(eq);
1006 		eqe = *ptr;
1007 		ocrdma_le32_to_cpu(&eqe, sizeof(eqe));
1008 		mcode = (eqe.id_valid & OCRDMA_EQE_MAJOR_CODE_MASK)
1009 				>> OCRDMA_EQE_MAJOR_CODE_SHIFT;
1010 		if (mcode == OCRDMA_MAJOR_CODE_SENTINAL)
1011 			pr_err("EQ full on eqid = 0x%x, eqe = 0x%x\n",
1012 			       eq->q.id, eqe.id_valid);
1013 		if ((eqe.id_valid & OCRDMA_EQE_VALID_MASK) == 0)
1014 			break;
1015 
1016 		ptr->id_valid = 0;
1017 		/* ring eq doorbell as soon as its consumed. */
1018 		ocrdma_ring_eq_db(dev, eq->q.id, false, true, 1);
1019 		/* check whether its CQE or not. */
1020 		if ((eqe.id_valid & OCRDMA_EQE_FOR_CQE_MASK) == 0) {
1021 			cq_id = eqe.id_valid >> OCRDMA_EQE_RESOURCE_ID_SHIFT;
1022 			ocrdma_cq_handler(dev, cq_id);
1023 		}
1024 		ocrdma_eq_inc_tail(eq);
1025 
1026 		/* There can be a stale EQE after the last bound CQ is
1027 		 * destroyed. EQE valid and budget == 0 implies this.
1028 		 */
1029 		if (budget)
1030 			budget--;
1031 
1032 	} while (budget);
1033 
1034 	eq->aic_obj.eq_intr_cnt++;
1035 	ocrdma_ring_eq_db(dev, eq->q.id, true, true, 0);
1036 	return IRQ_HANDLED;
1037 }
1038 
ocrdma_post_mqe(struct ocrdma_dev * dev,struct ocrdma_mqe * cmd)1039 static void ocrdma_post_mqe(struct ocrdma_dev *dev, struct ocrdma_mqe *cmd)
1040 {
1041 	struct ocrdma_mqe *mqe;
1042 
1043 	dev->mqe_ctx.tag = dev->mq.sq.head;
1044 	dev->mqe_ctx.cmd_done = false;
1045 	mqe = ocrdma_get_mqe(dev);
1046 	cmd->hdr.tag_lo = dev->mq.sq.head;
1047 	ocrdma_copy_cpu_to_le32(mqe, cmd, sizeof(*mqe));
1048 	/* make sure descriptor is written before ringing doorbell */
1049 	wmb();
1050 	ocrdma_mq_inc_head(dev);
1051 	ocrdma_ring_mq_db(dev);
1052 }
1053 
ocrdma_wait_mqe_cmpl(struct ocrdma_dev * dev)1054 static int ocrdma_wait_mqe_cmpl(struct ocrdma_dev *dev)
1055 {
1056 	long status;
1057 	/* 30 sec timeout */
1058 	status = wait_event_timeout(dev->mqe_ctx.cmd_wait,
1059 				    (dev->mqe_ctx.cmd_done != false),
1060 				    msecs_to_jiffies(30000));
1061 	if (status)
1062 		return 0;
1063 	else {
1064 		dev->mqe_ctx.fw_error_state = true;
1065 		pr_err("%s(%d) mailbox timeout: fw not responding\n",
1066 		       __func__, dev->id);
1067 		return -1;
1068 	}
1069 }
1070 
1071 /* issue a mailbox command on the MQ */
ocrdma_mbx_cmd(struct ocrdma_dev * dev,struct ocrdma_mqe * mqe)1072 static int ocrdma_mbx_cmd(struct ocrdma_dev *dev, struct ocrdma_mqe *mqe)
1073 {
1074 	int status = 0;
1075 	u16 cqe_status, ext_status;
1076 	struct ocrdma_mqe *rsp_mqe;
1077 	struct ocrdma_mbx_rsp *rsp = NULL;
1078 
1079 	mutex_lock(&dev->mqe_ctx.lock);
1080 	if (dev->mqe_ctx.fw_error_state)
1081 		goto mbx_err;
1082 	ocrdma_post_mqe(dev, mqe);
1083 	status = ocrdma_wait_mqe_cmpl(dev);
1084 	if (status)
1085 		goto mbx_err;
1086 	cqe_status = dev->mqe_ctx.cqe_status;
1087 	ext_status = dev->mqe_ctx.ext_status;
1088 	rsp_mqe = ocrdma_get_mqe_rsp(dev);
1089 	ocrdma_copy_le32_to_cpu(mqe, rsp_mqe, (sizeof(*mqe)));
1090 	if ((mqe->hdr.spcl_sge_cnt_emb & OCRDMA_MQE_HDR_EMB_MASK) >>
1091 				OCRDMA_MQE_HDR_EMB_SHIFT)
1092 		rsp = &mqe->u.rsp;
1093 
1094 	if (cqe_status || ext_status) {
1095 		pr_err("%s() cqe_status=0x%x, ext_status=0x%x,\n",
1096 		       __func__, cqe_status, ext_status);
1097 		if (rsp) {
1098 			/* This is for embedded cmds. */
1099 			pr_err("opcode=0x%x, subsystem=0x%x\n",
1100 			       (rsp->subsys_op & OCRDMA_MBX_RSP_OPCODE_MASK) >>
1101 				OCRDMA_MBX_RSP_OPCODE_SHIFT,
1102 				(rsp->subsys_op & OCRDMA_MBX_RSP_SUBSYS_MASK) >>
1103 				OCRDMA_MBX_RSP_SUBSYS_SHIFT);
1104 		}
1105 		status = ocrdma_get_mbx_cqe_errno(cqe_status);
1106 		goto mbx_err;
1107 	}
1108 	/* For non embedded, rsp errors are handled in ocrdma_nonemb_mbx_cmd */
1109 	if (rsp && (mqe->u.rsp.status & OCRDMA_MBX_RSP_STATUS_MASK))
1110 		status = ocrdma_get_mbx_errno(mqe->u.rsp.status);
1111 mbx_err:
1112 	mutex_unlock(&dev->mqe_ctx.lock);
1113 	return status;
1114 }
1115 
ocrdma_nonemb_mbx_cmd(struct ocrdma_dev * dev,struct ocrdma_mqe * mqe,void * payload_va)1116 static int ocrdma_nonemb_mbx_cmd(struct ocrdma_dev *dev, struct ocrdma_mqe *mqe,
1117 				 void *payload_va)
1118 {
1119 	int status;
1120 	struct ocrdma_mbx_rsp *rsp = payload_va;
1121 
1122 	if ((mqe->hdr.spcl_sge_cnt_emb & OCRDMA_MQE_HDR_EMB_MASK) >>
1123 				OCRDMA_MQE_HDR_EMB_SHIFT)
1124 		BUG();
1125 
1126 	status = ocrdma_mbx_cmd(dev, mqe);
1127 	if (!status)
1128 		/* For non embedded, only CQE failures are handled in
1129 		 * ocrdma_mbx_cmd. We need to check for RSP errors.
1130 		 */
1131 		if (rsp->status & OCRDMA_MBX_RSP_STATUS_MASK)
1132 			status = ocrdma_get_mbx_errno(rsp->status);
1133 
1134 	if (status)
1135 		pr_err("opcode=0x%x, subsystem=0x%x\n",
1136 		       (rsp->subsys_op & OCRDMA_MBX_RSP_OPCODE_MASK) >>
1137 			OCRDMA_MBX_RSP_OPCODE_SHIFT,
1138 			(rsp->subsys_op & OCRDMA_MBX_RSP_SUBSYS_MASK) >>
1139 			OCRDMA_MBX_RSP_SUBSYS_SHIFT);
1140 	return status;
1141 }
1142 
ocrdma_get_attr(struct ocrdma_dev * dev,struct ocrdma_dev_attr * attr,struct ocrdma_mbx_query_config * rsp)1143 static void ocrdma_get_attr(struct ocrdma_dev *dev,
1144 			      struct ocrdma_dev_attr *attr,
1145 			      struct ocrdma_mbx_query_config *rsp)
1146 {
1147 	attr->max_pd =
1148 	    (rsp->max_pd_ca_ack_delay & OCRDMA_MBX_QUERY_CFG_MAX_PD_MASK) >>
1149 	    OCRDMA_MBX_QUERY_CFG_MAX_PD_SHIFT;
1150 	attr->udp_encap = (rsp->max_pd_ca_ack_delay &
1151 			   OCRDMA_MBX_QUERY_CFG_L3_TYPE_MASK) >>
1152 			   OCRDMA_MBX_QUERY_CFG_L3_TYPE_SHIFT;
1153 	attr->max_dpp_pds =
1154 	   (rsp->max_dpp_pds_credits & OCRDMA_MBX_QUERY_CFG_MAX_DPP_PDS_MASK) >>
1155 	    OCRDMA_MBX_QUERY_CFG_MAX_DPP_PDS_OFFSET;
1156 	attr->max_qp =
1157 	    (rsp->qp_srq_cq_ird_ord & OCRDMA_MBX_QUERY_CFG_MAX_QP_MASK) >>
1158 	    OCRDMA_MBX_QUERY_CFG_MAX_QP_SHIFT;
1159 	attr->max_srq =
1160 		(rsp->max_srq_rpir_qps & OCRDMA_MBX_QUERY_CFG_MAX_SRQ_MASK) >>
1161 		OCRDMA_MBX_QUERY_CFG_MAX_SRQ_OFFSET;
1162 	attr->max_send_sge = ((rsp->max_recv_send_sge &
1163 			       OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_MASK) >>
1164 			      OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_SHIFT);
1165 	attr->max_recv_sge = (rsp->max_recv_send_sge &
1166 			      OCRDMA_MBX_QUERY_CFG_MAX_RECV_SGE_MASK) >>
1167 	    OCRDMA_MBX_QUERY_CFG_MAX_RECV_SGE_SHIFT;
1168 	attr->max_srq_sge = (rsp->max_srq_rqe_sge &
1169 			      OCRDMA_MBX_QUERY_CFG_MAX_SRQ_SGE_MASK) >>
1170 	    OCRDMA_MBX_QUERY_CFG_MAX_SRQ_SGE_OFFSET;
1171 	attr->max_rdma_sge = (rsp->max_wr_rd_sge &
1172 			      OCRDMA_MBX_QUERY_CFG_MAX_RD_SGE_MASK) >>
1173 	    OCRDMA_MBX_QUERY_CFG_MAX_RD_SGE_SHIFT;
1174 	attr->max_ord_per_qp = (rsp->max_ird_ord_per_qp &
1175 				OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_MASK) >>
1176 	    OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_SHIFT;
1177 	attr->max_ird_per_qp = (rsp->max_ird_ord_per_qp &
1178 				OCRDMA_MBX_QUERY_CFG_MAX_IRD_PER_QP_MASK) >>
1179 	    OCRDMA_MBX_QUERY_CFG_MAX_IRD_PER_QP_SHIFT;
1180 	attr->cq_overflow_detect = (rsp->qp_srq_cq_ird_ord &
1181 				    OCRDMA_MBX_QUERY_CFG_CQ_OVERFLOW_MASK) >>
1182 	    OCRDMA_MBX_QUERY_CFG_CQ_OVERFLOW_SHIFT;
1183 	attr->srq_supported = (rsp->qp_srq_cq_ird_ord &
1184 			       OCRDMA_MBX_QUERY_CFG_SRQ_SUPPORTED_MASK) >>
1185 	    OCRDMA_MBX_QUERY_CFG_SRQ_SUPPORTED_SHIFT;
1186 	attr->local_ca_ack_delay = (rsp->max_pd_ca_ack_delay &
1187 				    OCRDMA_MBX_QUERY_CFG_CA_ACK_DELAY_MASK) >>
1188 	    OCRDMA_MBX_QUERY_CFG_CA_ACK_DELAY_SHIFT;
1189 	attr->max_mw = rsp->max_mw;
1190 	attr->max_mr = rsp->max_mr;
1191 	attr->max_mr_size = ((u64)rsp->max_mr_size_hi << 32) |
1192 			      rsp->max_mr_size_lo;
1193 	attr->max_pages_per_frmr = rsp->max_pages_per_frmr;
1194 	attr->max_num_mr_pbl = rsp->max_num_mr_pbl;
1195 	attr->max_cqe = rsp->max_cq_cqes_per_cq &
1196 			OCRDMA_MBX_QUERY_CFG_MAX_CQES_PER_CQ_MASK;
1197 	attr->max_cq = (rsp->max_cq_cqes_per_cq &
1198 			OCRDMA_MBX_QUERY_CFG_MAX_CQ_MASK) >>
1199 			OCRDMA_MBX_QUERY_CFG_MAX_CQ_OFFSET;
1200 	attr->wqe_size = ((rsp->wqe_rqe_stride_max_dpp_cqs &
1201 		OCRDMA_MBX_QUERY_CFG_MAX_WQE_SIZE_MASK) >>
1202 		OCRDMA_MBX_QUERY_CFG_MAX_WQE_SIZE_OFFSET) *
1203 		OCRDMA_WQE_STRIDE;
1204 	attr->rqe_size = ((rsp->wqe_rqe_stride_max_dpp_cqs &
1205 		OCRDMA_MBX_QUERY_CFG_MAX_RQE_SIZE_MASK) >>
1206 		OCRDMA_MBX_QUERY_CFG_MAX_RQE_SIZE_OFFSET) *
1207 		OCRDMA_WQE_STRIDE;
1208 	attr->max_inline_data =
1209 	    attr->wqe_size - (sizeof(struct ocrdma_hdr_wqe) +
1210 			      sizeof(struct ocrdma_sge));
1211 	if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) {
1212 		attr->ird = 1;
1213 		attr->ird_page_size = OCRDMA_MIN_Q_PAGE_SIZE;
1214 		attr->num_ird_pages = MAX_OCRDMA_IRD_PAGES;
1215 	}
1216 	dev->attr.max_wqe = rsp->max_wqes_rqes_per_q >>
1217 		 OCRDMA_MBX_QUERY_CFG_MAX_WQES_PER_WQ_OFFSET;
1218 	dev->attr.max_rqe = rsp->max_wqes_rqes_per_q &
1219 		OCRDMA_MBX_QUERY_CFG_MAX_RQES_PER_RQ_MASK;
1220 }
1221 
ocrdma_check_fw_config(struct ocrdma_dev * dev,struct ocrdma_fw_conf_rsp * conf)1222 static int ocrdma_check_fw_config(struct ocrdma_dev *dev,
1223 				   struct ocrdma_fw_conf_rsp *conf)
1224 {
1225 	u32 fn_mode;
1226 
1227 	fn_mode = conf->fn_mode & OCRDMA_FN_MODE_RDMA;
1228 	if (fn_mode != OCRDMA_FN_MODE_RDMA)
1229 		return -EINVAL;
1230 	dev->base_eqid = conf->base_eqid;
1231 	dev->max_eq = conf->max_eq;
1232 	return 0;
1233 }
1234 
1235 /* can be issued only during init time. */
ocrdma_mbx_query_fw_ver(struct ocrdma_dev * dev)1236 static int ocrdma_mbx_query_fw_ver(struct ocrdma_dev *dev)
1237 {
1238 	int status = -ENOMEM;
1239 	struct ocrdma_mqe *cmd;
1240 	struct ocrdma_fw_ver_rsp *rsp;
1241 
1242 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_GET_FW_VER, sizeof(*cmd));
1243 	if (!cmd)
1244 		return -ENOMEM;
1245 	ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0],
1246 			OCRDMA_CMD_GET_FW_VER,
1247 			OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1248 
1249 	status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1250 	if (status)
1251 		goto mbx_err;
1252 	rsp = (struct ocrdma_fw_ver_rsp *)cmd;
1253 	memset(&dev->attr.fw_ver[0], 0, sizeof(dev->attr.fw_ver));
1254 	memcpy(&dev->attr.fw_ver[0], &rsp->running_ver[0],
1255 	       sizeof(rsp->running_ver));
1256 	ocrdma_le32_to_cpu(dev->attr.fw_ver, sizeof(rsp->running_ver));
1257 mbx_err:
1258 	kfree(cmd);
1259 	return status;
1260 }
1261 
1262 /* can be issued only during init time. */
ocrdma_mbx_query_fw_config(struct ocrdma_dev * dev)1263 static int ocrdma_mbx_query_fw_config(struct ocrdma_dev *dev)
1264 {
1265 	int status = -ENOMEM;
1266 	struct ocrdma_mqe *cmd;
1267 	struct ocrdma_fw_conf_rsp *rsp;
1268 
1269 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_GET_FW_CONFIG, sizeof(*cmd));
1270 	if (!cmd)
1271 		return -ENOMEM;
1272 	ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0],
1273 			OCRDMA_CMD_GET_FW_CONFIG,
1274 			OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1275 	status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1276 	if (status)
1277 		goto mbx_err;
1278 	rsp = (struct ocrdma_fw_conf_rsp *)cmd;
1279 	status = ocrdma_check_fw_config(dev, rsp);
1280 mbx_err:
1281 	kfree(cmd);
1282 	return status;
1283 }
1284 
ocrdma_mbx_rdma_stats(struct ocrdma_dev * dev,bool reset)1285 int ocrdma_mbx_rdma_stats(struct ocrdma_dev *dev, bool reset)
1286 {
1287 	struct ocrdma_rdma_stats_req *req = dev->stats_mem.va;
1288 	struct ocrdma_mqe *mqe = &dev->stats_mem.mqe;
1289 	struct ocrdma_rdma_stats_resp *old_stats;
1290 	int status;
1291 
1292 	old_stats = kmalloc(sizeof(*old_stats), GFP_KERNEL);
1293 	if (old_stats == NULL)
1294 		return -ENOMEM;
1295 
1296 	memset(mqe, 0, sizeof(*mqe));
1297 	mqe->hdr.pyld_len = dev->stats_mem.size;
1298 	mqe->hdr.spcl_sge_cnt_emb |=
1299 			(1 << OCRDMA_MQE_HDR_SGE_CNT_SHIFT) &
1300 				OCRDMA_MQE_HDR_SGE_CNT_MASK;
1301 	mqe->u.nonemb_req.sge[0].pa_lo = (u32) (dev->stats_mem.pa & 0xffffffff);
1302 	mqe->u.nonemb_req.sge[0].pa_hi = (u32) upper_32_bits(dev->stats_mem.pa);
1303 	mqe->u.nonemb_req.sge[0].len = dev->stats_mem.size;
1304 
1305 	/* Cache the old stats */
1306 	memcpy(old_stats, req, sizeof(struct ocrdma_rdma_stats_resp));
1307 	memset(req, 0, dev->stats_mem.size);
1308 
1309 	ocrdma_init_mch((struct ocrdma_mbx_hdr *)req,
1310 			OCRDMA_CMD_GET_RDMA_STATS,
1311 			OCRDMA_SUBSYS_ROCE,
1312 			dev->stats_mem.size);
1313 	if (reset)
1314 		req->reset_stats = reset;
1315 
1316 	status = ocrdma_nonemb_mbx_cmd(dev, mqe, dev->stats_mem.va);
1317 	if (status)
1318 		/* Copy from cache, if mbox fails */
1319 		memcpy(req, old_stats, sizeof(struct ocrdma_rdma_stats_resp));
1320 	else
1321 		ocrdma_le32_to_cpu(req, dev->stats_mem.size);
1322 
1323 	kfree(old_stats);
1324 	return status;
1325 }
1326 
ocrdma_mbx_get_ctrl_attribs(struct ocrdma_dev * dev)1327 static int ocrdma_mbx_get_ctrl_attribs(struct ocrdma_dev *dev)
1328 {
1329 	int status = -ENOMEM;
1330 	struct ocrdma_dma_mem dma;
1331 	struct ocrdma_mqe *mqe;
1332 	struct ocrdma_get_ctrl_attribs_rsp *ctrl_attr_rsp;
1333 	struct mgmt_hba_attribs *hba_attribs;
1334 
1335 	mqe = kzalloc(sizeof(struct ocrdma_mqe), GFP_KERNEL);
1336 	if (!mqe)
1337 		return status;
1338 
1339 	dma.size = sizeof(struct ocrdma_get_ctrl_attribs_rsp);
1340 	dma.va	 = dma_alloc_coherent(&dev->nic_info.pdev->dev,
1341 					dma.size, &dma.pa, GFP_KERNEL);
1342 	if (!dma.va)
1343 		goto free_mqe;
1344 
1345 	mqe->hdr.pyld_len = dma.size;
1346 	mqe->hdr.spcl_sge_cnt_emb |=
1347 			(1 << OCRDMA_MQE_HDR_SGE_CNT_SHIFT) &
1348 			OCRDMA_MQE_HDR_SGE_CNT_MASK;
1349 	mqe->u.nonemb_req.sge[0].pa_lo = (u32) (dma.pa & 0xffffffff);
1350 	mqe->u.nonemb_req.sge[0].pa_hi = (u32) upper_32_bits(dma.pa);
1351 	mqe->u.nonemb_req.sge[0].len = dma.size;
1352 
1353 	ocrdma_init_mch((struct ocrdma_mbx_hdr *)dma.va,
1354 			OCRDMA_CMD_GET_CTRL_ATTRIBUTES,
1355 			OCRDMA_SUBSYS_COMMON,
1356 			dma.size);
1357 
1358 	status = ocrdma_nonemb_mbx_cmd(dev, mqe, dma.va);
1359 	if (!status) {
1360 		ctrl_attr_rsp = (struct ocrdma_get_ctrl_attribs_rsp *)dma.va;
1361 		hba_attribs = &ctrl_attr_rsp->ctrl_attribs.hba_attribs;
1362 
1363 		dev->hba_port_num = (hba_attribs->ptpnum_maxdoms_hbast_cv &
1364 					OCRDMA_HBA_ATTRB_PTNUM_MASK)
1365 					>> OCRDMA_HBA_ATTRB_PTNUM_SHIFT;
1366 		strlcpy(dev->model_number,
1367 			hba_attribs->controller_model_number,
1368 			sizeof(dev->model_number));
1369 	}
1370 	dma_free_coherent(&dev->nic_info.pdev->dev, dma.size, dma.va, dma.pa);
1371 free_mqe:
1372 	kfree(mqe);
1373 	return status;
1374 }
1375 
ocrdma_mbx_query_dev(struct ocrdma_dev * dev)1376 static int ocrdma_mbx_query_dev(struct ocrdma_dev *dev)
1377 {
1378 	int status = -ENOMEM;
1379 	struct ocrdma_mbx_query_config *rsp;
1380 	struct ocrdma_mqe *cmd;
1381 
1382 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_CONFIG, sizeof(*cmd));
1383 	if (!cmd)
1384 		return status;
1385 	status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1386 	if (status)
1387 		goto mbx_err;
1388 	rsp = (struct ocrdma_mbx_query_config *)cmd;
1389 	ocrdma_get_attr(dev, &dev->attr, rsp);
1390 mbx_err:
1391 	kfree(cmd);
1392 	return status;
1393 }
1394 
ocrdma_mbx_get_link_speed(struct ocrdma_dev * dev,u8 * lnk_speed,u8 * lnk_state)1395 int ocrdma_mbx_get_link_speed(struct ocrdma_dev *dev, u8 *lnk_speed,
1396 			      u8 *lnk_state)
1397 {
1398 	int status = -ENOMEM;
1399 	struct ocrdma_get_link_speed_rsp *rsp;
1400 	struct ocrdma_mqe *cmd;
1401 
1402 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_NTWK_LINK_CONFIG_V1,
1403 				  sizeof(*cmd));
1404 	if (!cmd)
1405 		return status;
1406 	ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0],
1407 			OCRDMA_CMD_QUERY_NTWK_LINK_CONFIG_V1,
1408 			OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1409 
1410 	((struct ocrdma_mbx_hdr *)cmd->u.cmd)->rsvd_version = 0x1;
1411 
1412 	status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1413 	if (status)
1414 		goto mbx_err;
1415 
1416 	rsp = (struct ocrdma_get_link_speed_rsp *)cmd;
1417 	if (lnk_speed)
1418 		*lnk_speed = (rsp->pflt_pps_ld_pnum & OCRDMA_PHY_PS_MASK)
1419 			      >> OCRDMA_PHY_PS_SHIFT;
1420 	if (lnk_state)
1421 		*lnk_state = (rsp->res_lnk_st & OCRDMA_LINK_ST_MASK);
1422 
1423 mbx_err:
1424 	kfree(cmd);
1425 	return status;
1426 }
1427 
ocrdma_mbx_get_phy_info(struct ocrdma_dev * dev)1428 static int ocrdma_mbx_get_phy_info(struct ocrdma_dev *dev)
1429 {
1430 	int status = -ENOMEM;
1431 	struct ocrdma_mqe *cmd;
1432 	struct ocrdma_get_phy_info_rsp *rsp;
1433 
1434 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_PHY_DETAILS, sizeof(*cmd));
1435 	if (!cmd)
1436 		return status;
1437 
1438 	ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0],
1439 			OCRDMA_CMD_PHY_DETAILS, OCRDMA_SUBSYS_COMMON,
1440 			sizeof(*cmd));
1441 
1442 	status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1443 	if (status)
1444 		goto mbx_err;
1445 
1446 	rsp = (struct ocrdma_get_phy_info_rsp *)cmd;
1447 	dev->phy.phy_type =
1448 			(rsp->ityp_ptyp & OCRDMA_PHY_TYPE_MASK);
1449 	dev->phy.interface_type =
1450 			(rsp->ityp_ptyp & OCRDMA_IF_TYPE_MASK)
1451 				>> OCRDMA_IF_TYPE_SHIFT;
1452 	dev->phy.auto_speeds_supported  =
1453 			(rsp->fspeed_aspeed & OCRDMA_ASPEED_SUPP_MASK);
1454 	dev->phy.fixed_speeds_supported =
1455 			(rsp->fspeed_aspeed & OCRDMA_FSPEED_SUPP_MASK)
1456 				>> OCRDMA_FSPEED_SUPP_SHIFT;
1457 mbx_err:
1458 	kfree(cmd);
1459 	return status;
1460 }
1461 
ocrdma_mbx_alloc_pd(struct ocrdma_dev * dev,struct ocrdma_pd * pd)1462 int ocrdma_mbx_alloc_pd(struct ocrdma_dev *dev, struct ocrdma_pd *pd)
1463 {
1464 	int status = -ENOMEM;
1465 	struct ocrdma_alloc_pd *cmd;
1466 	struct ocrdma_alloc_pd_rsp *rsp;
1467 
1468 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_PD, sizeof(*cmd));
1469 	if (!cmd)
1470 		return status;
1471 	if (pd->dpp_enabled)
1472 		cmd->enable_dpp_rsvd |= OCRDMA_ALLOC_PD_ENABLE_DPP;
1473 	status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1474 	if (status)
1475 		goto mbx_err;
1476 	rsp = (struct ocrdma_alloc_pd_rsp *)cmd;
1477 	pd->id = rsp->dpp_page_pdid & OCRDMA_ALLOC_PD_RSP_PDID_MASK;
1478 	if (rsp->dpp_page_pdid & OCRDMA_ALLOC_PD_RSP_DPP) {
1479 		pd->dpp_enabled = true;
1480 		pd->dpp_page = rsp->dpp_page_pdid >>
1481 				OCRDMA_ALLOC_PD_RSP_DPP_PAGE_SHIFT;
1482 	} else {
1483 		pd->dpp_enabled = false;
1484 		pd->num_dpp_qp = 0;
1485 	}
1486 mbx_err:
1487 	kfree(cmd);
1488 	return status;
1489 }
1490 
ocrdma_mbx_dealloc_pd(struct ocrdma_dev * dev,struct ocrdma_pd * pd)1491 int ocrdma_mbx_dealloc_pd(struct ocrdma_dev *dev, struct ocrdma_pd *pd)
1492 {
1493 	int status = -ENOMEM;
1494 	struct ocrdma_dealloc_pd *cmd;
1495 
1496 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_PD, sizeof(*cmd));
1497 	if (!cmd)
1498 		return status;
1499 	cmd->id = pd->id;
1500 	status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1501 	kfree(cmd);
1502 	return status;
1503 }
1504 
1505 
ocrdma_mbx_alloc_pd_range(struct ocrdma_dev * dev)1506 static int ocrdma_mbx_alloc_pd_range(struct ocrdma_dev *dev)
1507 {
1508 	int status = -ENOMEM;
1509 	struct ocrdma_alloc_pd_range *cmd;
1510 	struct ocrdma_alloc_pd_range_rsp *rsp;
1511 
1512 	/* Pre allocate the DPP PDs */
1513 	if (dev->attr.max_dpp_pds) {
1514 		cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_PD_RANGE,
1515 					  sizeof(*cmd));
1516 		if (!cmd)
1517 			return -ENOMEM;
1518 		cmd->pd_count = dev->attr.max_dpp_pds;
1519 		cmd->enable_dpp_rsvd |= OCRDMA_ALLOC_PD_ENABLE_DPP;
1520 		status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1521 		rsp = (struct ocrdma_alloc_pd_range_rsp *)cmd;
1522 
1523 		if (!status && (rsp->dpp_page_pdid & OCRDMA_ALLOC_PD_RSP_DPP) &&
1524 		    rsp->pd_count) {
1525 			dev->pd_mgr->dpp_page_index = rsp->dpp_page_pdid >>
1526 					OCRDMA_ALLOC_PD_RSP_DPP_PAGE_SHIFT;
1527 			dev->pd_mgr->pd_dpp_start = rsp->dpp_page_pdid &
1528 					OCRDMA_ALLOC_PD_RNG_RSP_START_PDID_MASK;
1529 			dev->pd_mgr->max_dpp_pd = rsp->pd_count;
1530 			dev->pd_mgr->pd_dpp_bitmap = bitmap_zalloc(rsp->pd_count,
1531 								   GFP_KERNEL);
1532 		}
1533 		kfree(cmd);
1534 	}
1535 
1536 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_PD_RANGE, sizeof(*cmd));
1537 	if (!cmd)
1538 		return -ENOMEM;
1539 
1540 	cmd->pd_count = dev->attr.max_pd - dev->attr.max_dpp_pds;
1541 	status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1542 	rsp = (struct ocrdma_alloc_pd_range_rsp *)cmd;
1543 	if (!status && rsp->pd_count) {
1544 		dev->pd_mgr->pd_norm_start = rsp->dpp_page_pdid &
1545 					OCRDMA_ALLOC_PD_RNG_RSP_START_PDID_MASK;
1546 		dev->pd_mgr->max_normal_pd = rsp->pd_count;
1547 		dev->pd_mgr->pd_norm_bitmap = bitmap_zalloc(rsp->pd_count,
1548 							    GFP_KERNEL);
1549 	}
1550 	kfree(cmd);
1551 
1552 	if (dev->pd_mgr->pd_norm_bitmap || dev->pd_mgr->pd_dpp_bitmap) {
1553 		/* Enable PD resource manager */
1554 		dev->pd_mgr->pd_prealloc_valid = true;
1555 		return 0;
1556 	}
1557 	return status;
1558 }
1559 
ocrdma_mbx_dealloc_pd_range(struct ocrdma_dev * dev)1560 static void ocrdma_mbx_dealloc_pd_range(struct ocrdma_dev *dev)
1561 {
1562 	struct ocrdma_dealloc_pd_range *cmd;
1563 
1564 	/* return normal PDs to firmware */
1565 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_PD_RANGE, sizeof(*cmd));
1566 	if (!cmd)
1567 		goto mbx_err;
1568 
1569 	if (dev->pd_mgr->max_normal_pd) {
1570 		cmd->start_pd_id = dev->pd_mgr->pd_norm_start;
1571 		cmd->pd_count = dev->pd_mgr->max_normal_pd;
1572 		ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1573 	}
1574 
1575 	if (dev->pd_mgr->max_dpp_pd) {
1576 		kfree(cmd);
1577 		/* return DPP PDs to firmware */
1578 		cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_PD_RANGE,
1579 					  sizeof(*cmd));
1580 		if (!cmd)
1581 			goto mbx_err;
1582 
1583 		cmd->start_pd_id = dev->pd_mgr->pd_dpp_start;
1584 		cmd->pd_count = dev->pd_mgr->max_dpp_pd;
1585 		ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1586 	}
1587 mbx_err:
1588 	kfree(cmd);
1589 }
1590 
ocrdma_alloc_pd_pool(struct ocrdma_dev * dev)1591 void ocrdma_alloc_pd_pool(struct ocrdma_dev *dev)
1592 {
1593 	int status;
1594 
1595 	dev->pd_mgr = kzalloc(sizeof(struct ocrdma_pd_resource_mgr),
1596 			      GFP_KERNEL);
1597 	if (!dev->pd_mgr)
1598 		return;
1599 
1600 	status = ocrdma_mbx_alloc_pd_range(dev);
1601 	if (status) {
1602 		pr_err("%s(%d) Unable to initialize PD pool, using default.\n",
1603 			 __func__, dev->id);
1604 	}
1605 }
1606 
ocrdma_free_pd_pool(struct ocrdma_dev * dev)1607 static void ocrdma_free_pd_pool(struct ocrdma_dev *dev)
1608 {
1609 	ocrdma_mbx_dealloc_pd_range(dev);
1610 	bitmap_free(dev->pd_mgr->pd_norm_bitmap);
1611 	bitmap_free(dev->pd_mgr->pd_dpp_bitmap);
1612 	kfree(dev->pd_mgr);
1613 }
1614 
ocrdma_build_q_conf(u32 * num_entries,int entry_size,int * num_pages,int * page_size)1615 static int ocrdma_build_q_conf(u32 *num_entries, int entry_size,
1616 			       int *num_pages, int *page_size)
1617 {
1618 	int i;
1619 	int mem_size;
1620 
1621 	*num_entries = roundup_pow_of_two(*num_entries);
1622 	mem_size = *num_entries * entry_size;
1623 	/* find the possible lowest possible multiplier */
1624 	for (i = 0; i < OCRDMA_MAX_Q_PAGE_SIZE_CNT; i++) {
1625 		if (mem_size <= (OCRDMA_Q_PAGE_BASE_SIZE << i))
1626 			break;
1627 	}
1628 	if (i >= OCRDMA_MAX_Q_PAGE_SIZE_CNT)
1629 		return -EINVAL;
1630 	mem_size = roundup(mem_size,
1631 		       ((OCRDMA_Q_PAGE_BASE_SIZE << i) / OCRDMA_MAX_Q_PAGES));
1632 	*num_pages =
1633 	    mem_size / ((OCRDMA_Q_PAGE_BASE_SIZE << i) / OCRDMA_MAX_Q_PAGES);
1634 	*page_size = ((OCRDMA_Q_PAGE_BASE_SIZE << i) / OCRDMA_MAX_Q_PAGES);
1635 	*num_entries = mem_size / entry_size;
1636 	return 0;
1637 }
1638 
ocrdma_mbx_create_ah_tbl(struct ocrdma_dev * dev)1639 static int ocrdma_mbx_create_ah_tbl(struct ocrdma_dev *dev)
1640 {
1641 	int i;
1642 	int status = -ENOMEM;
1643 	int max_ah;
1644 	struct ocrdma_create_ah_tbl *cmd;
1645 	struct ocrdma_create_ah_tbl_rsp *rsp;
1646 	struct pci_dev *pdev = dev->nic_info.pdev;
1647 	dma_addr_t pa;
1648 	struct ocrdma_pbe *pbes;
1649 
1650 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_AH_TBL, sizeof(*cmd));
1651 	if (!cmd)
1652 		return status;
1653 
1654 	max_ah = OCRDMA_MAX_AH;
1655 	dev->av_tbl.size = sizeof(struct ocrdma_av) * max_ah;
1656 
1657 	/* number of PBEs in PBL */
1658 	cmd->ah_conf = (OCRDMA_AH_TBL_PAGES <<
1659 				OCRDMA_CREATE_AH_NUM_PAGES_SHIFT) &
1660 				OCRDMA_CREATE_AH_NUM_PAGES_MASK;
1661 
1662 	/* page size */
1663 	for (i = 0; i < OCRDMA_MAX_Q_PAGE_SIZE_CNT; i++) {
1664 		if (PAGE_SIZE == (OCRDMA_MIN_Q_PAGE_SIZE << i))
1665 			break;
1666 	}
1667 	cmd->ah_conf |= (i << OCRDMA_CREATE_AH_PAGE_SIZE_SHIFT) &
1668 				OCRDMA_CREATE_AH_PAGE_SIZE_MASK;
1669 
1670 	/* ah_entry size */
1671 	cmd->ah_conf |= (sizeof(struct ocrdma_av) <<
1672 				OCRDMA_CREATE_AH_ENTRY_SIZE_SHIFT) &
1673 				OCRDMA_CREATE_AH_ENTRY_SIZE_MASK;
1674 
1675 	dev->av_tbl.pbl.va = dma_alloc_coherent(&pdev->dev, PAGE_SIZE,
1676 						&dev->av_tbl.pbl.pa,
1677 						GFP_KERNEL);
1678 	if (dev->av_tbl.pbl.va == NULL)
1679 		goto mem_err;
1680 
1681 	dev->av_tbl.va = dma_alloc_coherent(&pdev->dev, dev->av_tbl.size,
1682 					    &pa, GFP_KERNEL);
1683 	if (dev->av_tbl.va == NULL)
1684 		goto mem_err_ah;
1685 	dev->av_tbl.pa = pa;
1686 	dev->av_tbl.num_ah = max_ah;
1687 
1688 	pbes = (struct ocrdma_pbe *)dev->av_tbl.pbl.va;
1689 	for (i = 0; i < dev->av_tbl.size / OCRDMA_MIN_Q_PAGE_SIZE; i++) {
1690 		pbes[i].pa_lo = (u32)cpu_to_le32(pa & 0xffffffff);
1691 		pbes[i].pa_hi = (u32)cpu_to_le32(upper_32_bits(pa));
1692 		pa += PAGE_SIZE;
1693 	}
1694 	cmd->tbl_addr[0].lo = (u32)(dev->av_tbl.pbl.pa & 0xFFFFFFFF);
1695 	cmd->tbl_addr[0].hi = (u32)upper_32_bits(dev->av_tbl.pbl.pa);
1696 	status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1697 	if (status)
1698 		goto mbx_err;
1699 	rsp = (struct ocrdma_create_ah_tbl_rsp *)cmd;
1700 	dev->av_tbl.ahid = rsp->ahid & 0xFFFF;
1701 	kfree(cmd);
1702 	return 0;
1703 
1704 mbx_err:
1705 	dma_free_coherent(&pdev->dev, dev->av_tbl.size, dev->av_tbl.va,
1706 			  dev->av_tbl.pa);
1707 	dev->av_tbl.va = NULL;
1708 mem_err_ah:
1709 	dma_free_coherent(&pdev->dev, PAGE_SIZE, dev->av_tbl.pbl.va,
1710 			  dev->av_tbl.pbl.pa);
1711 	dev->av_tbl.pbl.va = NULL;
1712 	dev->av_tbl.size = 0;
1713 mem_err:
1714 	kfree(cmd);
1715 	return status;
1716 }
1717 
ocrdma_mbx_delete_ah_tbl(struct ocrdma_dev * dev)1718 static void ocrdma_mbx_delete_ah_tbl(struct ocrdma_dev *dev)
1719 {
1720 	struct ocrdma_delete_ah_tbl *cmd;
1721 	struct pci_dev *pdev = dev->nic_info.pdev;
1722 
1723 	if (dev->av_tbl.va == NULL)
1724 		return;
1725 
1726 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_AH_TBL, sizeof(*cmd));
1727 	if (!cmd)
1728 		return;
1729 	cmd->ahid = dev->av_tbl.ahid;
1730 
1731 	ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1732 	dma_free_coherent(&pdev->dev, dev->av_tbl.size, dev->av_tbl.va,
1733 			  dev->av_tbl.pa);
1734 	dev->av_tbl.va = NULL;
1735 	dma_free_coherent(&pdev->dev, PAGE_SIZE, dev->av_tbl.pbl.va,
1736 			  dev->av_tbl.pbl.pa);
1737 	kfree(cmd);
1738 }
1739 
1740 /* Multiple CQs uses the EQ. This routine returns least used
1741  * EQ to associate with CQ. This will distributes the interrupt
1742  * processing and CPU load to associated EQ, vector and so to that CPU.
1743  */
ocrdma_bind_eq(struct ocrdma_dev * dev)1744 static u16 ocrdma_bind_eq(struct ocrdma_dev *dev)
1745 {
1746 	int i, selected_eq = 0, cq_cnt = 0;
1747 	u16 eq_id;
1748 
1749 	mutex_lock(&dev->dev_lock);
1750 	cq_cnt = dev->eq_tbl[0].cq_cnt;
1751 	eq_id = dev->eq_tbl[0].q.id;
1752 	/* find the EQ which is has the least number of
1753 	 * CQs associated with it.
1754 	 */
1755 	for (i = 0; i < dev->eq_cnt; i++) {
1756 		if (dev->eq_tbl[i].cq_cnt < cq_cnt) {
1757 			cq_cnt = dev->eq_tbl[i].cq_cnt;
1758 			eq_id = dev->eq_tbl[i].q.id;
1759 			selected_eq = i;
1760 		}
1761 	}
1762 	dev->eq_tbl[selected_eq].cq_cnt += 1;
1763 	mutex_unlock(&dev->dev_lock);
1764 	return eq_id;
1765 }
1766 
ocrdma_unbind_eq(struct ocrdma_dev * dev,u16 eq_id)1767 static void ocrdma_unbind_eq(struct ocrdma_dev *dev, u16 eq_id)
1768 {
1769 	int i;
1770 
1771 	mutex_lock(&dev->dev_lock);
1772 	i = ocrdma_get_eq_table_index(dev, eq_id);
1773 	if (i == -EINVAL)
1774 		BUG();
1775 	dev->eq_tbl[i].cq_cnt -= 1;
1776 	mutex_unlock(&dev->dev_lock);
1777 }
1778 
ocrdma_mbx_create_cq(struct ocrdma_dev * dev,struct ocrdma_cq * cq,int entries,int dpp_cq,u16 pd_id)1779 int ocrdma_mbx_create_cq(struct ocrdma_dev *dev, struct ocrdma_cq *cq,
1780 			 int entries, int dpp_cq, u16 pd_id)
1781 {
1782 	int status = -ENOMEM; int max_hw_cqe;
1783 	struct pci_dev *pdev = dev->nic_info.pdev;
1784 	struct ocrdma_create_cq *cmd;
1785 	struct ocrdma_create_cq_rsp *rsp;
1786 	u32 hw_pages, cqe_size, page_size, cqe_count;
1787 
1788 	if (entries > dev->attr.max_cqe) {
1789 		pr_err("%s(%d) max_cqe=0x%x, requester_cqe=0x%x\n",
1790 		       __func__, dev->id, dev->attr.max_cqe, entries);
1791 		return -EINVAL;
1792 	}
1793 	if (dpp_cq && (ocrdma_get_asic_type(dev) != OCRDMA_ASIC_GEN_SKH_R))
1794 		return -EINVAL;
1795 
1796 	if (dpp_cq) {
1797 		cq->max_hw_cqe = 1;
1798 		max_hw_cqe = 1;
1799 		cqe_size = OCRDMA_DPP_CQE_SIZE;
1800 		hw_pages = 1;
1801 	} else {
1802 		cq->max_hw_cqe = dev->attr.max_cqe;
1803 		max_hw_cqe = dev->attr.max_cqe;
1804 		cqe_size = sizeof(struct ocrdma_cqe);
1805 		hw_pages = OCRDMA_CREATE_CQ_MAX_PAGES;
1806 	}
1807 
1808 	cq->len = roundup(max_hw_cqe * cqe_size, OCRDMA_MIN_Q_PAGE_SIZE);
1809 
1810 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_CQ, sizeof(*cmd));
1811 	if (!cmd)
1812 		return -ENOMEM;
1813 	ocrdma_init_mch(&cmd->cmd.req, OCRDMA_CMD_CREATE_CQ,
1814 			OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1815 	cq->va = dma_alloc_coherent(&pdev->dev, cq->len, &cq->pa, GFP_KERNEL);
1816 	if (!cq->va) {
1817 		status = -ENOMEM;
1818 		goto mem_err;
1819 	}
1820 	page_size = cq->len / hw_pages;
1821 	cmd->cmd.pgsz_pgcnt = (page_size / OCRDMA_MIN_Q_PAGE_SIZE) <<
1822 					OCRDMA_CREATE_CQ_PAGE_SIZE_SHIFT;
1823 	cmd->cmd.pgsz_pgcnt |= hw_pages;
1824 	cmd->cmd.ev_cnt_flags = OCRDMA_CREATE_CQ_DEF_FLAGS;
1825 
1826 	cq->eqn = ocrdma_bind_eq(dev);
1827 	cmd->cmd.req.rsvd_version = OCRDMA_CREATE_CQ_VER3;
1828 	cqe_count = cq->len / cqe_size;
1829 	cq->cqe_cnt = cqe_count;
1830 	if (cqe_count > 1024) {
1831 		/* Set cnt to 3 to indicate more than 1024 cq entries */
1832 		cmd->cmd.ev_cnt_flags |= (0x3 << OCRDMA_CREATE_CQ_CNT_SHIFT);
1833 	} else {
1834 		u8 count = 0;
1835 		switch (cqe_count) {
1836 		case 256:
1837 			count = 0;
1838 			break;
1839 		case 512:
1840 			count = 1;
1841 			break;
1842 		case 1024:
1843 			count = 2;
1844 			break;
1845 		default:
1846 			goto mbx_err;
1847 		}
1848 		cmd->cmd.ev_cnt_flags |= (count << OCRDMA_CREATE_CQ_CNT_SHIFT);
1849 	}
1850 	/* shared eq between all the consumer cqs. */
1851 	cmd->cmd.eqn = cq->eqn;
1852 	if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) {
1853 		if (dpp_cq)
1854 			cmd->cmd.pgsz_pgcnt |= OCRDMA_CREATE_CQ_DPP <<
1855 				OCRDMA_CREATE_CQ_TYPE_SHIFT;
1856 		cq->phase_change = false;
1857 		cmd->cmd.pdid_cqecnt = (cq->len / cqe_size);
1858 	} else {
1859 		cmd->cmd.pdid_cqecnt = (cq->len / cqe_size) - 1;
1860 		cmd->cmd.ev_cnt_flags |= OCRDMA_CREATE_CQ_FLAGS_AUTO_VALID;
1861 		cq->phase_change = true;
1862 	}
1863 
1864 	/* pd_id valid only for v3 */
1865 	cmd->cmd.pdid_cqecnt |= (pd_id <<
1866 		OCRDMA_CREATE_CQ_CMD_PDID_SHIFT);
1867 	ocrdma_build_q_pages(&cmd->cmd.pa[0], hw_pages, cq->pa, page_size);
1868 	status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1869 	if (status)
1870 		goto mbx_err;
1871 
1872 	rsp = (struct ocrdma_create_cq_rsp *)cmd;
1873 	cq->id = (u16) (rsp->rsp.cq_id & OCRDMA_CREATE_CQ_RSP_CQ_ID_MASK);
1874 	kfree(cmd);
1875 	return 0;
1876 mbx_err:
1877 	ocrdma_unbind_eq(dev, cq->eqn);
1878 	dma_free_coherent(&pdev->dev, cq->len, cq->va, cq->pa);
1879 mem_err:
1880 	kfree(cmd);
1881 	return status;
1882 }
1883 
ocrdma_mbx_destroy_cq(struct ocrdma_dev * dev,struct ocrdma_cq * cq)1884 void ocrdma_mbx_destroy_cq(struct ocrdma_dev *dev, struct ocrdma_cq *cq)
1885 {
1886 	struct ocrdma_destroy_cq *cmd;
1887 
1888 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_CQ, sizeof(*cmd));
1889 	if (!cmd)
1890 		return;
1891 	ocrdma_init_mch(&cmd->req, OCRDMA_CMD_DELETE_CQ,
1892 			OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1893 
1894 	cmd->bypass_flush_qid |=
1895 	    (cq->id << OCRDMA_DESTROY_CQ_QID_SHIFT) &
1896 	    OCRDMA_DESTROY_CQ_QID_MASK;
1897 
1898 	ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1899 	ocrdma_unbind_eq(dev, cq->eqn);
1900 	dma_free_coherent(&dev->nic_info.pdev->dev, cq->len, cq->va, cq->pa);
1901 	kfree(cmd);
1902 }
1903 
ocrdma_mbx_alloc_lkey(struct ocrdma_dev * dev,struct ocrdma_hw_mr * hwmr,u32 pdid,int addr_check)1904 int ocrdma_mbx_alloc_lkey(struct ocrdma_dev *dev, struct ocrdma_hw_mr *hwmr,
1905 			  u32 pdid, int addr_check)
1906 {
1907 	int status = -ENOMEM;
1908 	struct ocrdma_alloc_lkey *cmd;
1909 	struct ocrdma_alloc_lkey_rsp *rsp;
1910 
1911 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_LKEY, sizeof(*cmd));
1912 	if (!cmd)
1913 		return status;
1914 	cmd->pdid = pdid;
1915 	cmd->pbl_sz_flags |= addr_check;
1916 	cmd->pbl_sz_flags |= (hwmr->fr_mr << OCRDMA_ALLOC_LKEY_FMR_SHIFT);
1917 	cmd->pbl_sz_flags |=
1918 	    (hwmr->remote_wr << OCRDMA_ALLOC_LKEY_REMOTE_WR_SHIFT);
1919 	cmd->pbl_sz_flags |=
1920 	    (hwmr->remote_rd << OCRDMA_ALLOC_LKEY_REMOTE_RD_SHIFT);
1921 	cmd->pbl_sz_flags |=
1922 	    (hwmr->local_wr << OCRDMA_ALLOC_LKEY_LOCAL_WR_SHIFT);
1923 	cmd->pbl_sz_flags |=
1924 	    (hwmr->remote_atomic << OCRDMA_ALLOC_LKEY_REMOTE_ATOMIC_SHIFT);
1925 	cmd->pbl_sz_flags |=
1926 	    (hwmr->num_pbls << OCRDMA_ALLOC_LKEY_PBL_SIZE_SHIFT);
1927 
1928 	status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1929 	if (status)
1930 		goto mbx_err;
1931 	rsp = (struct ocrdma_alloc_lkey_rsp *)cmd;
1932 	hwmr->lkey = rsp->lrkey;
1933 mbx_err:
1934 	kfree(cmd);
1935 	return status;
1936 }
1937 
ocrdma_mbx_dealloc_lkey(struct ocrdma_dev * dev,int fr_mr,u32 lkey)1938 int ocrdma_mbx_dealloc_lkey(struct ocrdma_dev *dev, int fr_mr, u32 lkey)
1939 {
1940 	int status;
1941 	struct ocrdma_dealloc_lkey *cmd;
1942 
1943 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_LKEY, sizeof(*cmd));
1944 	if (!cmd)
1945 		return -ENOMEM;
1946 	cmd->lkey = lkey;
1947 	cmd->rsvd_frmr = fr_mr ? 1 : 0;
1948 	status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1949 
1950 	kfree(cmd);
1951 	return status;
1952 }
1953 
ocrdma_mbx_reg_mr(struct ocrdma_dev * dev,struct ocrdma_hw_mr * hwmr,u32 pdid,u32 pbl_cnt,u32 pbe_size,u32 last)1954 static int ocrdma_mbx_reg_mr(struct ocrdma_dev *dev, struct ocrdma_hw_mr *hwmr,
1955 			     u32 pdid, u32 pbl_cnt, u32 pbe_size, u32 last)
1956 {
1957 	int status = -ENOMEM;
1958 	int i;
1959 	struct ocrdma_reg_nsmr *cmd;
1960 	struct ocrdma_reg_nsmr_rsp *rsp;
1961 	u64 fbo = hwmr->va & (hwmr->pbe_size - 1);
1962 
1963 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_REGISTER_NSMR, sizeof(*cmd));
1964 	if (!cmd)
1965 		return -ENOMEM;
1966 	cmd->num_pbl_pdid =
1967 	    pdid | (hwmr->num_pbls << OCRDMA_REG_NSMR_NUM_PBL_SHIFT);
1968 	cmd->fr_mr = hwmr->fr_mr;
1969 
1970 	cmd->flags_hpage_pbe_sz |= (hwmr->remote_wr <<
1971 				    OCRDMA_REG_NSMR_REMOTE_WR_SHIFT);
1972 	cmd->flags_hpage_pbe_sz |= (hwmr->remote_rd <<
1973 				    OCRDMA_REG_NSMR_REMOTE_RD_SHIFT);
1974 	cmd->flags_hpage_pbe_sz |= (hwmr->local_wr <<
1975 				    OCRDMA_REG_NSMR_LOCAL_WR_SHIFT);
1976 	cmd->flags_hpage_pbe_sz |= (hwmr->remote_atomic <<
1977 				    OCRDMA_REG_NSMR_REMOTE_ATOMIC_SHIFT);
1978 	cmd->flags_hpage_pbe_sz |= (hwmr->mw_bind <<
1979 				    OCRDMA_REG_NSMR_BIND_MEMWIN_SHIFT);
1980 	cmd->flags_hpage_pbe_sz |= (last << OCRDMA_REG_NSMR_LAST_SHIFT);
1981 
1982 	cmd->flags_hpage_pbe_sz |= (hwmr->pbe_size / OCRDMA_MIN_HPAGE_SIZE);
1983 	cmd->flags_hpage_pbe_sz |= (hwmr->pbl_size / OCRDMA_MIN_HPAGE_SIZE) <<
1984 					OCRDMA_REG_NSMR_HPAGE_SIZE_SHIFT;
1985 	cmd->totlen_low = hwmr->len;
1986 	cmd->totlen_high = upper_32_bits(hwmr->len);
1987 	cmd->fbo_low = lower_32_bits(fbo);
1988 	cmd->fbo_high = upper_32_bits(fbo);
1989 	cmd->va_loaddr = (u32) hwmr->va;
1990 	cmd->va_hiaddr = (u32) upper_32_bits(hwmr->va);
1991 
1992 	for (i = 0; i < pbl_cnt; i++) {
1993 		cmd->pbl[i].lo = (u32) (hwmr->pbl_table[i].pa & 0xffffffff);
1994 		cmd->pbl[i].hi = upper_32_bits(hwmr->pbl_table[i].pa);
1995 	}
1996 	status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1997 	if (status)
1998 		goto mbx_err;
1999 	rsp = (struct ocrdma_reg_nsmr_rsp *)cmd;
2000 	hwmr->lkey = rsp->lrkey;
2001 mbx_err:
2002 	kfree(cmd);
2003 	return status;
2004 }
2005 
ocrdma_mbx_reg_mr_cont(struct ocrdma_dev * dev,struct ocrdma_hw_mr * hwmr,u32 pbl_cnt,u32 pbl_offset,u32 last)2006 static int ocrdma_mbx_reg_mr_cont(struct ocrdma_dev *dev,
2007 				  struct ocrdma_hw_mr *hwmr, u32 pbl_cnt,
2008 				  u32 pbl_offset, u32 last)
2009 {
2010 	int status;
2011 	int i;
2012 	struct ocrdma_reg_nsmr_cont *cmd;
2013 
2014 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_REGISTER_NSMR_CONT, sizeof(*cmd));
2015 	if (!cmd)
2016 		return -ENOMEM;
2017 	cmd->lrkey = hwmr->lkey;
2018 	cmd->num_pbl_offset = (pbl_cnt << OCRDMA_REG_NSMR_CONT_NUM_PBL_SHIFT) |
2019 	    (pbl_offset & OCRDMA_REG_NSMR_CONT_PBL_SHIFT_MASK);
2020 	cmd->last = last << OCRDMA_REG_NSMR_CONT_LAST_SHIFT;
2021 
2022 	for (i = 0; i < pbl_cnt; i++) {
2023 		cmd->pbl[i].lo =
2024 		    (u32) (hwmr->pbl_table[i + pbl_offset].pa & 0xffffffff);
2025 		cmd->pbl[i].hi =
2026 		    upper_32_bits(hwmr->pbl_table[i + pbl_offset].pa);
2027 	}
2028 	status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2029 
2030 	kfree(cmd);
2031 	return status;
2032 }
2033 
ocrdma_reg_mr(struct ocrdma_dev * dev,struct ocrdma_hw_mr * hwmr,u32 pdid,int acc)2034 int ocrdma_reg_mr(struct ocrdma_dev *dev,
2035 		  struct ocrdma_hw_mr *hwmr, u32 pdid, int acc)
2036 {
2037 	int status;
2038 	u32 last = 0;
2039 	u32 cur_pbl_cnt, pbl_offset;
2040 	u32 pending_pbl_cnt = hwmr->num_pbls;
2041 
2042 	pbl_offset = 0;
2043 	cur_pbl_cnt = min(pending_pbl_cnt, MAX_OCRDMA_NSMR_PBL);
2044 	if (cur_pbl_cnt == pending_pbl_cnt)
2045 		last = 1;
2046 
2047 	status = ocrdma_mbx_reg_mr(dev, hwmr, pdid,
2048 				   cur_pbl_cnt, hwmr->pbe_size, last);
2049 	if (status) {
2050 		pr_err("%s() status=%d\n", __func__, status);
2051 		return status;
2052 	}
2053 	/* if there is no more pbls to register then exit. */
2054 	if (last)
2055 		return 0;
2056 
2057 	while (!last) {
2058 		pbl_offset += cur_pbl_cnt;
2059 		pending_pbl_cnt -= cur_pbl_cnt;
2060 		cur_pbl_cnt = min(pending_pbl_cnt, MAX_OCRDMA_NSMR_PBL);
2061 		/* if we reach the end of the pbls, then need to set the last
2062 		 * bit, indicating no more pbls to register for this memory key.
2063 		 */
2064 		if (cur_pbl_cnt == pending_pbl_cnt)
2065 			last = 1;
2066 
2067 		status = ocrdma_mbx_reg_mr_cont(dev, hwmr, cur_pbl_cnt,
2068 						pbl_offset, last);
2069 		if (status)
2070 			break;
2071 	}
2072 	if (status)
2073 		pr_err("%s() err. status=%d\n", __func__, status);
2074 
2075 	return status;
2076 }
2077 
ocrdma_is_qp_in_sq_flushlist(struct ocrdma_cq * cq,struct ocrdma_qp * qp)2078 bool ocrdma_is_qp_in_sq_flushlist(struct ocrdma_cq *cq, struct ocrdma_qp *qp)
2079 {
2080 	struct ocrdma_qp *tmp;
2081 	bool found = false;
2082 	list_for_each_entry(tmp, &cq->sq_head, sq_entry) {
2083 		if (qp == tmp) {
2084 			found = true;
2085 			break;
2086 		}
2087 	}
2088 	return found;
2089 }
2090 
ocrdma_is_qp_in_rq_flushlist(struct ocrdma_cq * cq,struct ocrdma_qp * qp)2091 bool ocrdma_is_qp_in_rq_flushlist(struct ocrdma_cq *cq, struct ocrdma_qp *qp)
2092 {
2093 	struct ocrdma_qp *tmp;
2094 	bool found = false;
2095 	list_for_each_entry(tmp, &cq->rq_head, rq_entry) {
2096 		if (qp == tmp) {
2097 			found = true;
2098 			break;
2099 		}
2100 	}
2101 	return found;
2102 }
2103 
ocrdma_flush_qp(struct ocrdma_qp * qp)2104 void ocrdma_flush_qp(struct ocrdma_qp *qp)
2105 {
2106 	bool found;
2107 	unsigned long flags;
2108 	struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device);
2109 
2110 	spin_lock_irqsave(&dev->flush_q_lock, flags);
2111 	found = ocrdma_is_qp_in_sq_flushlist(qp->sq_cq, qp);
2112 	if (!found)
2113 		list_add_tail(&qp->sq_entry, &qp->sq_cq->sq_head);
2114 	if (!qp->srq) {
2115 		found = ocrdma_is_qp_in_rq_flushlist(qp->rq_cq, qp);
2116 		if (!found)
2117 			list_add_tail(&qp->rq_entry, &qp->rq_cq->rq_head);
2118 	}
2119 	spin_unlock_irqrestore(&dev->flush_q_lock, flags);
2120 }
2121 
ocrdma_init_hwq_ptr(struct ocrdma_qp * qp)2122 static void ocrdma_init_hwq_ptr(struct ocrdma_qp *qp)
2123 {
2124 	qp->sq.head = 0;
2125 	qp->sq.tail = 0;
2126 	qp->rq.head = 0;
2127 	qp->rq.tail = 0;
2128 }
2129 
ocrdma_qp_state_change(struct ocrdma_qp * qp,enum ib_qp_state new_ib_state,enum ib_qp_state * old_ib_state)2130 int ocrdma_qp_state_change(struct ocrdma_qp *qp, enum ib_qp_state new_ib_state,
2131 			   enum ib_qp_state *old_ib_state)
2132 {
2133 	unsigned long flags;
2134 	enum ocrdma_qp_state new_state;
2135 	new_state = get_ocrdma_qp_state(new_ib_state);
2136 
2137 	/* sync with wqe and rqe posting */
2138 	spin_lock_irqsave(&qp->q_lock, flags);
2139 
2140 	if (old_ib_state)
2141 		*old_ib_state = get_ibqp_state(qp->state);
2142 	if (new_state == qp->state) {
2143 		spin_unlock_irqrestore(&qp->q_lock, flags);
2144 		return 1;
2145 	}
2146 
2147 
2148 	if (new_state == OCRDMA_QPS_INIT) {
2149 		ocrdma_init_hwq_ptr(qp);
2150 		ocrdma_del_flush_qp(qp);
2151 	} else if (new_state == OCRDMA_QPS_ERR) {
2152 		ocrdma_flush_qp(qp);
2153 	}
2154 
2155 	qp->state = new_state;
2156 
2157 	spin_unlock_irqrestore(&qp->q_lock, flags);
2158 	return 0;
2159 }
2160 
ocrdma_set_create_qp_mbx_access_flags(struct ocrdma_qp * qp)2161 static u32 ocrdma_set_create_qp_mbx_access_flags(struct ocrdma_qp *qp)
2162 {
2163 	u32 flags = 0;
2164 	if (qp->cap_flags & OCRDMA_QP_INB_RD)
2165 		flags |= OCRDMA_CREATE_QP_REQ_INB_RDEN_MASK;
2166 	if (qp->cap_flags & OCRDMA_QP_INB_WR)
2167 		flags |= OCRDMA_CREATE_QP_REQ_INB_WREN_MASK;
2168 	if (qp->cap_flags & OCRDMA_QP_MW_BIND)
2169 		flags |= OCRDMA_CREATE_QP_REQ_BIND_MEMWIN_MASK;
2170 	if (qp->cap_flags & OCRDMA_QP_LKEY0)
2171 		flags |= OCRDMA_CREATE_QP_REQ_ZERO_LKEYEN_MASK;
2172 	if (qp->cap_flags & OCRDMA_QP_FAST_REG)
2173 		flags |= OCRDMA_CREATE_QP_REQ_FMR_EN_MASK;
2174 	return flags;
2175 }
2176 
ocrdma_set_create_qp_sq_cmd(struct ocrdma_create_qp_req * cmd,struct ib_qp_init_attr * attrs,struct ocrdma_qp * qp)2177 static int ocrdma_set_create_qp_sq_cmd(struct ocrdma_create_qp_req *cmd,
2178 					struct ib_qp_init_attr *attrs,
2179 					struct ocrdma_qp *qp)
2180 {
2181 	int status;
2182 	u32 len, hw_pages, hw_page_size;
2183 	dma_addr_t pa;
2184 	struct ocrdma_pd *pd = qp->pd;
2185 	struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
2186 	struct pci_dev *pdev = dev->nic_info.pdev;
2187 	u32 max_wqe_allocated;
2188 	u32 max_sges = attrs->cap.max_send_sge;
2189 
2190 	/* QP1 may exceed 127 */
2191 	max_wqe_allocated = min_t(u32, attrs->cap.max_send_wr + 1,
2192 				dev->attr.max_wqe);
2193 
2194 	status = ocrdma_build_q_conf(&max_wqe_allocated,
2195 		dev->attr.wqe_size, &hw_pages, &hw_page_size);
2196 	if (status) {
2197 		pr_err("%s() req. max_send_wr=0x%x\n", __func__,
2198 		       max_wqe_allocated);
2199 		return -EINVAL;
2200 	}
2201 	qp->sq.max_cnt = max_wqe_allocated;
2202 	len = (hw_pages * hw_page_size);
2203 
2204 	qp->sq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL);
2205 	if (!qp->sq.va)
2206 		return -EINVAL;
2207 	qp->sq.len = len;
2208 	qp->sq.pa = pa;
2209 	qp->sq.entry_size = dev->attr.wqe_size;
2210 	ocrdma_build_q_pages(&cmd->wq_addr[0], hw_pages, pa, hw_page_size);
2211 
2212 	cmd->type_pgsz_pdn |= (ilog2(hw_page_size / OCRDMA_MIN_Q_PAGE_SIZE)
2213 				<< OCRDMA_CREATE_QP_REQ_SQ_PAGE_SIZE_SHIFT);
2214 	cmd->num_wq_rq_pages |= (hw_pages <<
2215 				 OCRDMA_CREATE_QP_REQ_NUM_WQ_PAGES_SHIFT) &
2216 	    OCRDMA_CREATE_QP_REQ_NUM_WQ_PAGES_MASK;
2217 	cmd->max_sge_send_write |= (max_sges <<
2218 				    OCRDMA_CREATE_QP_REQ_MAX_SGE_SEND_SHIFT) &
2219 	    OCRDMA_CREATE_QP_REQ_MAX_SGE_SEND_MASK;
2220 	cmd->max_sge_send_write |= (max_sges <<
2221 				    OCRDMA_CREATE_QP_REQ_MAX_SGE_WRITE_SHIFT) &
2222 					OCRDMA_CREATE_QP_REQ_MAX_SGE_WRITE_MASK;
2223 	cmd->max_wqe_rqe |= (ilog2(qp->sq.max_cnt) <<
2224 			     OCRDMA_CREATE_QP_REQ_MAX_WQE_SHIFT) &
2225 				OCRDMA_CREATE_QP_REQ_MAX_WQE_MASK;
2226 	cmd->wqe_rqe_size |= (dev->attr.wqe_size <<
2227 			      OCRDMA_CREATE_QP_REQ_WQE_SIZE_SHIFT) &
2228 				OCRDMA_CREATE_QP_REQ_WQE_SIZE_MASK;
2229 	return 0;
2230 }
2231 
ocrdma_set_create_qp_rq_cmd(struct ocrdma_create_qp_req * cmd,struct ib_qp_init_attr * attrs,struct ocrdma_qp * qp)2232 static int ocrdma_set_create_qp_rq_cmd(struct ocrdma_create_qp_req *cmd,
2233 					struct ib_qp_init_attr *attrs,
2234 					struct ocrdma_qp *qp)
2235 {
2236 	int status;
2237 	u32 len, hw_pages, hw_page_size;
2238 	dma_addr_t pa = 0;
2239 	struct ocrdma_pd *pd = qp->pd;
2240 	struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
2241 	struct pci_dev *pdev = dev->nic_info.pdev;
2242 	u32 max_rqe_allocated = attrs->cap.max_recv_wr + 1;
2243 
2244 	status = ocrdma_build_q_conf(&max_rqe_allocated, dev->attr.rqe_size,
2245 				     &hw_pages, &hw_page_size);
2246 	if (status) {
2247 		pr_err("%s() req. max_recv_wr=0x%x\n", __func__,
2248 		       attrs->cap.max_recv_wr + 1);
2249 		return status;
2250 	}
2251 	qp->rq.max_cnt = max_rqe_allocated;
2252 	len = (hw_pages * hw_page_size);
2253 
2254 	qp->rq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL);
2255 	if (!qp->rq.va)
2256 		return -ENOMEM;
2257 	qp->rq.pa = pa;
2258 	qp->rq.len = len;
2259 	qp->rq.entry_size = dev->attr.rqe_size;
2260 
2261 	ocrdma_build_q_pages(&cmd->rq_addr[0], hw_pages, pa, hw_page_size);
2262 	cmd->type_pgsz_pdn |= (ilog2(hw_page_size / OCRDMA_MIN_Q_PAGE_SIZE) <<
2263 		OCRDMA_CREATE_QP_REQ_RQ_PAGE_SIZE_SHIFT);
2264 	cmd->num_wq_rq_pages |=
2265 	    (hw_pages << OCRDMA_CREATE_QP_REQ_NUM_RQ_PAGES_SHIFT) &
2266 	    OCRDMA_CREATE_QP_REQ_NUM_RQ_PAGES_MASK;
2267 	cmd->max_sge_recv_flags |= (attrs->cap.max_recv_sge <<
2268 				OCRDMA_CREATE_QP_REQ_MAX_SGE_RECV_SHIFT) &
2269 				OCRDMA_CREATE_QP_REQ_MAX_SGE_RECV_MASK;
2270 	cmd->max_wqe_rqe |= (ilog2(qp->rq.max_cnt) <<
2271 				OCRDMA_CREATE_QP_REQ_MAX_RQE_SHIFT) &
2272 				OCRDMA_CREATE_QP_REQ_MAX_RQE_MASK;
2273 	cmd->wqe_rqe_size |= (dev->attr.rqe_size <<
2274 			OCRDMA_CREATE_QP_REQ_RQE_SIZE_SHIFT) &
2275 			OCRDMA_CREATE_QP_REQ_RQE_SIZE_MASK;
2276 	return 0;
2277 }
2278 
ocrdma_set_create_qp_dpp_cmd(struct ocrdma_create_qp_req * cmd,struct ocrdma_pd * pd,struct ocrdma_qp * qp,u8 enable_dpp_cq,u16 dpp_cq_id)2279 static void ocrdma_set_create_qp_dpp_cmd(struct ocrdma_create_qp_req *cmd,
2280 					 struct ocrdma_pd *pd,
2281 					 struct ocrdma_qp *qp,
2282 					 u8 enable_dpp_cq, u16 dpp_cq_id)
2283 {
2284 	pd->num_dpp_qp--;
2285 	qp->dpp_enabled = true;
2286 	cmd->max_sge_recv_flags |= OCRDMA_CREATE_QP_REQ_ENABLE_DPP_MASK;
2287 	if (!enable_dpp_cq)
2288 		return;
2289 	cmd->max_sge_recv_flags |= OCRDMA_CREATE_QP_REQ_ENABLE_DPP_MASK;
2290 	cmd->dpp_credits_cqid = dpp_cq_id;
2291 	cmd->dpp_credits_cqid |= OCRDMA_CREATE_QP_REQ_DPP_CREDIT_LIMIT <<
2292 					OCRDMA_CREATE_QP_REQ_DPP_CREDIT_SHIFT;
2293 }
2294 
ocrdma_set_create_qp_ird_cmd(struct ocrdma_create_qp_req * cmd,struct ocrdma_qp * qp)2295 static int ocrdma_set_create_qp_ird_cmd(struct ocrdma_create_qp_req *cmd,
2296 					struct ocrdma_qp *qp)
2297 {
2298 	struct ocrdma_pd *pd = qp->pd;
2299 	struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
2300 	struct pci_dev *pdev = dev->nic_info.pdev;
2301 	dma_addr_t pa = 0;
2302 	int ird_page_size = dev->attr.ird_page_size;
2303 	int ird_q_len = dev->attr.num_ird_pages * ird_page_size;
2304 	struct ocrdma_hdr_wqe *rqe;
2305 	int i  = 0;
2306 
2307 	if (dev->attr.ird == 0)
2308 		return 0;
2309 
2310 	qp->ird_q_va = dma_alloc_coherent(&pdev->dev, ird_q_len, &pa,
2311 					  GFP_KERNEL);
2312 	if (!qp->ird_q_va)
2313 		return -ENOMEM;
2314 	ocrdma_build_q_pages(&cmd->ird_addr[0], dev->attr.num_ird_pages,
2315 			     pa, ird_page_size);
2316 	for (; i < ird_q_len / dev->attr.rqe_size; i++) {
2317 		rqe = (struct ocrdma_hdr_wqe *)(qp->ird_q_va +
2318 			(i * dev->attr.rqe_size));
2319 		rqe->cw = 0;
2320 		rqe->cw |= 2;
2321 		rqe->cw |= (OCRDMA_TYPE_LKEY << OCRDMA_WQE_TYPE_SHIFT);
2322 		rqe->cw |= (8 << OCRDMA_WQE_SIZE_SHIFT);
2323 		rqe->cw |= (8 << OCRDMA_WQE_NXT_WQE_SIZE_SHIFT);
2324 	}
2325 	return 0;
2326 }
2327 
ocrdma_get_create_qp_rsp(struct ocrdma_create_qp_rsp * rsp,struct ocrdma_qp * qp,struct ib_qp_init_attr * attrs,u16 * dpp_offset,u16 * dpp_credit_lmt)2328 static void ocrdma_get_create_qp_rsp(struct ocrdma_create_qp_rsp *rsp,
2329 				     struct ocrdma_qp *qp,
2330 				     struct ib_qp_init_attr *attrs,
2331 				     u16 *dpp_offset, u16 *dpp_credit_lmt)
2332 {
2333 	u32 max_wqe_allocated, max_rqe_allocated;
2334 	qp->id = rsp->qp_id & OCRDMA_CREATE_QP_RSP_QP_ID_MASK;
2335 	qp->rq.dbid = rsp->sq_rq_id & OCRDMA_CREATE_QP_RSP_RQ_ID_MASK;
2336 	qp->sq.dbid = rsp->sq_rq_id >> OCRDMA_CREATE_QP_RSP_SQ_ID_SHIFT;
2337 	qp->max_ird = rsp->max_ord_ird & OCRDMA_CREATE_QP_RSP_MAX_IRD_MASK;
2338 	qp->max_ord = (rsp->max_ord_ird >> OCRDMA_CREATE_QP_RSP_MAX_ORD_SHIFT);
2339 	qp->dpp_enabled = false;
2340 	if (rsp->dpp_response & OCRDMA_CREATE_QP_RSP_DPP_ENABLED_MASK) {
2341 		qp->dpp_enabled = true;
2342 		*dpp_credit_lmt = (rsp->dpp_response &
2343 				OCRDMA_CREATE_QP_RSP_DPP_CREDITS_MASK) >>
2344 				OCRDMA_CREATE_QP_RSP_DPP_CREDITS_SHIFT;
2345 		*dpp_offset = (rsp->dpp_response &
2346 				OCRDMA_CREATE_QP_RSP_DPP_PAGE_OFFSET_MASK) >>
2347 				OCRDMA_CREATE_QP_RSP_DPP_PAGE_OFFSET_SHIFT;
2348 	}
2349 	max_wqe_allocated =
2350 		rsp->max_wqe_rqe >> OCRDMA_CREATE_QP_RSP_MAX_WQE_SHIFT;
2351 	max_wqe_allocated = 1 << max_wqe_allocated;
2352 	max_rqe_allocated = 1 << ((u16)rsp->max_wqe_rqe);
2353 
2354 	qp->sq.max_cnt = max_wqe_allocated;
2355 	qp->sq.max_wqe_idx = max_wqe_allocated - 1;
2356 
2357 	if (!attrs->srq) {
2358 		qp->rq.max_cnt = max_rqe_allocated;
2359 		qp->rq.max_wqe_idx = max_rqe_allocated - 1;
2360 	}
2361 }
2362 
ocrdma_mbx_create_qp(struct ocrdma_qp * qp,struct ib_qp_init_attr * attrs,u8 enable_dpp_cq,u16 dpp_cq_id,u16 * dpp_offset,u16 * dpp_credit_lmt)2363 int ocrdma_mbx_create_qp(struct ocrdma_qp *qp, struct ib_qp_init_attr *attrs,
2364 			 u8 enable_dpp_cq, u16 dpp_cq_id, u16 *dpp_offset,
2365 			 u16 *dpp_credit_lmt)
2366 {
2367 	int status = -ENOMEM;
2368 	u32 flags = 0;
2369 	struct ocrdma_pd *pd = qp->pd;
2370 	struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
2371 	struct pci_dev *pdev = dev->nic_info.pdev;
2372 	struct ocrdma_cq *cq;
2373 	struct ocrdma_create_qp_req *cmd;
2374 	struct ocrdma_create_qp_rsp *rsp;
2375 	int qptype;
2376 
2377 	switch (attrs->qp_type) {
2378 	case IB_QPT_GSI:
2379 		qptype = OCRDMA_QPT_GSI;
2380 		break;
2381 	case IB_QPT_RC:
2382 		qptype = OCRDMA_QPT_RC;
2383 		break;
2384 	case IB_QPT_UD:
2385 		qptype = OCRDMA_QPT_UD;
2386 		break;
2387 	default:
2388 		return -EINVAL;
2389 	}
2390 
2391 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_QP, sizeof(*cmd));
2392 	if (!cmd)
2393 		return status;
2394 	cmd->type_pgsz_pdn |= (qptype << OCRDMA_CREATE_QP_REQ_QPT_SHIFT) &
2395 						OCRDMA_CREATE_QP_REQ_QPT_MASK;
2396 	status = ocrdma_set_create_qp_sq_cmd(cmd, attrs, qp);
2397 	if (status)
2398 		goto sq_err;
2399 
2400 	if (attrs->srq) {
2401 		struct ocrdma_srq *srq = get_ocrdma_srq(attrs->srq);
2402 		cmd->max_sge_recv_flags |= OCRDMA_CREATE_QP_REQ_USE_SRQ_MASK;
2403 		cmd->rq_addr[0].lo = srq->id;
2404 		qp->srq = srq;
2405 	} else {
2406 		status = ocrdma_set_create_qp_rq_cmd(cmd, attrs, qp);
2407 		if (status)
2408 			goto rq_err;
2409 	}
2410 
2411 	status = ocrdma_set_create_qp_ird_cmd(cmd, qp);
2412 	if (status)
2413 		goto mbx_err;
2414 
2415 	cmd->type_pgsz_pdn |= (pd->id << OCRDMA_CREATE_QP_REQ_PD_ID_SHIFT) &
2416 				OCRDMA_CREATE_QP_REQ_PD_ID_MASK;
2417 
2418 	flags = ocrdma_set_create_qp_mbx_access_flags(qp);
2419 
2420 	cmd->max_sge_recv_flags |= flags;
2421 	cmd->max_ord_ird |= (dev->attr.max_ord_per_qp <<
2422 			     OCRDMA_CREATE_QP_REQ_MAX_ORD_SHIFT) &
2423 				OCRDMA_CREATE_QP_REQ_MAX_ORD_MASK;
2424 	cmd->max_ord_ird |= (dev->attr.max_ird_per_qp <<
2425 			     OCRDMA_CREATE_QP_REQ_MAX_IRD_SHIFT) &
2426 				OCRDMA_CREATE_QP_REQ_MAX_IRD_MASK;
2427 	cq = get_ocrdma_cq(attrs->send_cq);
2428 	cmd->wq_rq_cqid |= (cq->id << OCRDMA_CREATE_QP_REQ_WQ_CQID_SHIFT) &
2429 				OCRDMA_CREATE_QP_REQ_WQ_CQID_MASK;
2430 	qp->sq_cq = cq;
2431 	cq = get_ocrdma_cq(attrs->recv_cq);
2432 	cmd->wq_rq_cqid |= (cq->id << OCRDMA_CREATE_QP_REQ_RQ_CQID_SHIFT) &
2433 				OCRDMA_CREATE_QP_REQ_RQ_CQID_MASK;
2434 	qp->rq_cq = cq;
2435 
2436 	if (pd->dpp_enabled && attrs->cap.max_inline_data && pd->num_dpp_qp &&
2437 	    (attrs->cap.max_inline_data <= dev->attr.max_inline_data)) {
2438 		ocrdma_set_create_qp_dpp_cmd(cmd, pd, qp, enable_dpp_cq,
2439 					     dpp_cq_id);
2440 	}
2441 
2442 	status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2443 	if (status)
2444 		goto mbx_err;
2445 	rsp = (struct ocrdma_create_qp_rsp *)cmd;
2446 	ocrdma_get_create_qp_rsp(rsp, qp, attrs, dpp_offset, dpp_credit_lmt);
2447 	qp->state = OCRDMA_QPS_RST;
2448 	kfree(cmd);
2449 	return 0;
2450 mbx_err:
2451 	if (qp->rq.va)
2452 		dma_free_coherent(&pdev->dev, qp->rq.len, qp->rq.va, qp->rq.pa);
2453 rq_err:
2454 	pr_err("%s(%d) rq_err\n", __func__, dev->id);
2455 	dma_free_coherent(&pdev->dev, qp->sq.len, qp->sq.va, qp->sq.pa);
2456 sq_err:
2457 	pr_err("%s(%d) sq_err\n", __func__, dev->id);
2458 	kfree(cmd);
2459 	return status;
2460 }
2461 
ocrdma_mbx_query_qp(struct ocrdma_dev * dev,struct ocrdma_qp * qp,struct ocrdma_qp_params * param)2462 int ocrdma_mbx_query_qp(struct ocrdma_dev *dev, struct ocrdma_qp *qp,
2463 			struct ocrdma_qp_params *param)
2464 {
2465 	int status = -ENOMEM;
2466 	struct ocrdma_query_qp *cmd;
2467 	struct ocrdma_query_qp_rsp *rsp;
2468 
2469 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_QP, sizeof(*rsp));
2470 	if (!cmd)
2471 		return status;
2472 	cmd->qp_id = qp->id;
2473 	status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2474 	if (status)
2475 		goto mbx_err;
2476 	rsp = (struct ocrdma_query_qp_rsp *)cmd;
2477 	memcpy(param, &rsp->params, sizeof(struct ocrdma_qp_params));
2478 mbx_err:
2479 	kfree(cmd);
2480 	return status;
2481 }
2482 
ocrdma_set_av_params(struct ocrdma_qp * qp,struct ocrdma_modify_qp * cmd,struct ib_qp_attr * attrs,int attr_mask)2483 static int ocrdma_set_av_params(struct ocrdma_qp *qp,
2484 				struct ocrdma_modify_qp *cmd,
2485 				struct ib_qp_attr *attrs,
2486 				int attr_mask)
2487 {
2488 	int status;
2489 	struct rdma_ah_attr *ah_attr = &attrs->ah_attr;
2490 	const struct ib_gid_attr *sgid_attr;
2491 	u16 vlan_id = 0xFFFF;
2492 	u8 mac_addr[6], hdr_type;
2493 	union {
2494 		struct sockaddr_in  _sockaddr_in;
2495 		struct sockaddr_in6 _sockaddr_in6;
2496 	} sgid_addr, dgid_addr;
2497 	struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device);
2498 	const struct ib_global_route *grh;
2499 
2500 	if ((rdma_ah_get_ah_flags(ah_attr) & IB_AH_GRH) == 0)
2501 		return -EINVAL;
2502 	grh = rdma_ah_read_grh(ah_attr);
2503 	if (atomic_cmpxchg(&dev->update_sl, 1, 0))
2504 		ocrdma_init_service_level(dev);
2505 	cmd->params.tclass_sq_psn |=
2506 	    (grh->traffic_class << OCRDMA_QP_PARAMS_TCLASS_SHIFT);
2507 	cmd->params.rnt_rc_sl_fl |=
2508 	    (grh->flow_label & OCRDMA_QP_PARAMS_FLOW_LABEL_MASK);
2509 	cmd->params.rnt_rc_sl_fl |= (rdma_ah_get_sl(ah_attr) <<
2510 				     OCRDMA_QP_PARAMS_SL_SHIFT);
2511 	cmd->params.hop_lmt_rq_psn |=
2512 	    (grh->hop_limit << OCRDMA_QP_PARAMS_HOP_LMT_SHIFT);
2513 	cmd->flags |= OCRDMA_QP_PARA_FLOW_LBL_VALID;
2514 
2515 	/* GIDs */
2516 	memcpy(&cmd->params.dgid[0], &grh->dgid.raw[0],
2517 	       sizeof(cmd->params.dgid));
2518 
2519 	sgid_attr = ah_attr->grh.sgid_attr;
2520 	status = rdma_read_gid_l2_fields(sgid_attr, &vlan_id, &mac_addr[0]);
2521 	if (status)
2522 		return status;
2523 
2524 	qp->sgid_idx = grh->sgid_index;
2525 	memcpy(&cmd->params.sgid[0], &sgid_attr->gid.raw[0],
2526 	       sizeof(cmd->params.sgid));
2527 	status = ocrdma_resolve_dmac(dev, ah_attr, &mac_addr[0]);
2528 	if (status)
2529 		return status;
2530 
2531 	cmd->params.dmac_b0_to_b3 = mac_addr[0] | (mac_addr[1] << 8) |
2532 				(mac_addr[2] << 16) | (mac_addr[3] << 24);
2533 
2534 	hdr_type = rdma_gid_attr_network_type(sgid_attr);
2535 	if (hdr_type == RDMA_NETWORK_IPV4) {
2536 		rdma_gid2ip((struct sockaddr *)&sgid_addr, &sgid_attr->gid);
2537 		rdma_gid2ip((struct sockaddr *)&dgid_addr, &grh->dgid);
2538 		memcpy(&cmd->params.dgid[0],
2539 		       &dgid_addr._sockaddr_in.sin_addr.s_addr, 4);
2540 		memcpy(&cmd->params.sgid[0],
2541 		       &sgid_addr._sockaddr_in.sin_addr.s_addr, 4);
2542 	}
2543 	/* convert them to LE format. */
2544 	ocrdma_cpu_to_le32(&cmd->params.dgid[0], sizeof(cmd->params.dgid));
2545 	ocrdma_cpu_to_le32(&cmd->params.sgid[0], sizeof(cmd->params.sgid));
2546 	cmd->params.vlan_dmac_b4_to_b5 = mac_addr[4] | (mac_addr[5] << 8);
2547 
2548 	if (vlan_id == 0xFFFF)
2549 		vlan_id = 0;
2550 	if (vlan_id || dev->pfc_state) {
2551 		if (!vlan_id) {
2552 			pr_err("ocrdma%d:Using VLAN with PFC is recommended\n",
2553 			       dev->id);
2554 			pr_err("ocrdma%d:Using VLAN 0 for this connection\n",
2555 			       dev->id);
2556 		}
2557 		cmd->params.vlan_dmac_b4_to_b5 |=
2558 		    vlan_id << OCRDMA_QP_PARAMS_VLAN_SHIFT;
2559 		cmd->flags |= OCRDMA_QP_PARA_VLAN_EN_VALID;
2560 		cmd->params.rnt_rc_sl_fl |=
2561 			(dev->sl & 0x07) << OCRDMA_QP_PARAMS_SL_SHIFT;
2562 	}
2563 	cmd->params.max_sge_recv_flags |= ((hdr_type <<
2564 					OCRDMA_QP_PARAMS_FLAGS_L3_TYPE_SHIFT) &
2565 					OCRDMA_QP_PARAMS_FLAGS_L3_TYPE_MASK);
2566 	return 0;
2567 }
2568 
ocrdma_set_qp_params(struct ocrdma_qp * qp,struct ocrdma_modify_qp * cmd,struct ib_qp_attr * attrs,int attr_mask)2569 static int ocrdma_set_qp_params(struct ocrdma_qp *qp,
2570 				struct ocrdma_modify_qp *cmd,
2571 				struct ib_qp_attr *attrs, int attr_mask)
2572 {
2573 	int status = 0;
2574 	struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device);
2575 
2576 	if (attr_mask & IB_QP_PKEY_INDEX) {
2577 		cmd->params.path_mtu_pkey_indx |= (attrs->pkey_index &
2578 					    OCRDMA_QP_PARAMS_PKEY_INDEX_MASK);
2579 		cmd->flags |= OCRDMA_QP_PARA_PKEY_VALID;
2580 	}
2581 	if (attr_mask & IB_QP_QKEY) {
2582 		qp->qkey = attrs->qkey;
2583 		cmd->params.qkey = attrs->qkey;
2584 		cmd->flags |= OCRDMA_QP_PARA_QKEY_VALID;
2585 	}
2586 	if (attr_mask & IB_QP_AV) {
2587 		status = ocrdma_set_av_params(qp, cmd, attrs, attr_mask);
2588 		if (status)
2589 			return status;
2590 	} else if (qp->qp_type == IB_QPT_GSI || qp->qp_type == IB_QPT_UD) {
2591 		/* set the default mac address for UD, GSI QPs */
2592 		cmd->params.dmac_b0_to_b3 = dev->nic_info.mac_addr[0] |
2593 			(dev->nic_info.mac_addr[1] << 8) |
2594 			(dev->nic_info.mac_addr[2] << 16) |
2595 			(dev->nic_info.mac_addr[3] << 24);
2596 		cmd->params.vlan_dmac_b4_to_b5 = dev->nic_info.mac_addr[4] |
2597 					(dev->nic_info.mac_addr[5] << 8);
2598 	}
2599 	if ((attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY) &&
2600 	    attrs->en_sqd_async_notify) {
2601 		cmd->params.max_sge_recv_flags |=
2602 			OCRDMA_QP_PARAMS_FLAGS_SQD_ASYNC;
2603 		cmd->flags |= OCRDMA_QP_PARA_DST_QPN_VALID;
2604 	}
2605 	if (attr_mask & IB_QP_DEST_QPN) {
2606 		cmd->params.ack_to_rnr_rtc_dest_qpn |= (attrs->dest_qp_num &
2607 				OCRDMA_QP_PARAMS_DEST_QPN_MASK);
2608 		cmd->flags |= OCRDMA_QP_PARA_DST_QPN_VALID;
2609 	}
2610 	if (attr_mask & IB_QP_PATH_MTU) {
2611 		if (attrs->path_mtu < IB_MTU_512 ||
2612 		    attrs->path_mtu > IB_MTU_4096) {
2613 			pr_err("ocrdma%d: IB MTU %d is not supported\n",
2614 			       dev->id, ib_mtu_enum_to_int(attrs->path_mtu));
2615 			status = -EINVAL;
2616 			goto pmtu_err;
2617 		}
2618 		cmd->params.path_mtu_pkey_indx |=
2619 		    (ib_mtu_enum_to_int(attrs->path_mtu) <<
2620 		     OCRDMA_QP_PARAMS_PATH_MTU_SHIFT) &
2621 		    OCRDMA_QP_PARAMS_PATH_MTU_MASK;
2622 		cmd->flags |= OCRDMA_QP_PARA_PMTU_VALID;
2623 	}
2624 	if (attr_mask & IB_QP_TIMEOUT) {
2625 		cmd->params.ack_to_rnr_rtc_dest_qpn |= attrs->timeout <<
2626 		    OCRDMA_QP_PARAMS_ACK_TIMEOUT_SHIFT;
2627 		cmd->flags |= OCRDMA_QP_PARA_ACK_TO_VALID;
2628 	}
2629 	if (attr_mask & IB_QP_RETRY_CNT) {
2630 		cmd->params.rnt_rc_sl_fl |= (attrs->retry_cnt <<
2631 				      OCRDMA_QP_PARAMS_RETRY_CNT_SHIFT) &
2632 		    OCRDMA_QP_PARAMS_RETRY_CNT_MASK;
2633 		cmd->flags |= OCRDMA_QP_PARA_RETRY_CNT_VALID;
2634 	}
2635 	if (attr_mask & IB_QP_MIN_RNR_TIMER) {
2636 		cmd->params.rnt_rc_sl_fl |= (attrs->min_rnr_timer <<
2637 				      OCRDMA_QP_PARAMS_RNR_NAK_TIMER_SHIFT) &
2638 		    OCRDMA_QP_PARAMS_RNR_NAK_TIMER_MASK;
2639 		cmd->flags |= OCRDMA_QP_PARA_RNT_VALID;
2640 	}
2641 	if (attr_mask & IB_QP_RNR_RETRY) {
2642 		cmd->params.ack_to_rnr_rtc_dest_qpn |= (attrs->rnr_retry <<
2643 			OCRDMA_QP_PARAMS_RNR_RETRY_CNT_SHIFT)
2644 			& OCRDMA_QP_PARAMS_RNR_RETRY_CNT_MASK;
2645 		cmd->flags |= OCRDMA_QP_PARA_RRC_VALID;
2646 	}
2647 	if (attr_mask & IB_QP_SQ_PSN) {
2648 		cmd->params.tclass_sq_psn |= (attrs->sq_psn & 0x00ffffff);
2649 		cmd->flags |= OCRDMA_QP_PARA_SQPSN_VALID;
2650 	}
2651 	if (attr_mask & IB_QP_RQ_PSN) {
2652 		cmd->params.hop_lmt_rq_psn |= (attrs->rq_psn & 0x00ffffff);
2653 		cmd->flags |= OCRDMA_QP_PARA_RQPSN_VALID;
2654 	}
2655 	if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
2656 		if (attrs->max_rd_atomic > dev->attr.max_ord_per_qp) {
2657 			status = -EINVAL;
2658 			goto pmtu_err;
2659 		}
2660 		qp->max_ord = attrs->max_rd_atomic;
2661 		cmd->flags |= OCRDMA_QP_PARA_MAX_ORD_VALID;
2662 	}
2663 	if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
2664 		if (attrs->max_dest_rd_atomic > dev->attr.max_ird_per_qp) {
2665 			status = -EINVAL;
2666 			goto pmtu_err;
2667 		}
2668 		qp->max_ird = attrs->max_dest_rd_atomic;
2669 		cmd->flags |= OCRDMA_QP_PARA_MAX_IRD_VALID;
2670 	}
2671 	cmd->params.max_ord_ird = (qp->max_ord <<
2672 				OCRDMA_QP_PARAMS_MAX_ORD_SHIFT) |
2673 				(qp->max_ird & OCRDMA_QP_PARAMS_MAX_IRD_MASK);
2674 pmtu_err:
2675 	return status;
2676 }
2677 
ocrdma_mbx_modify_qp(struct ocrdma_dev * dev,struct ocrdma_qp * qp,struct ib_qp_attr * attrs,int attr_mask)2678 int ocrdma_mbx_modify_qp(struct ocrdma_dev *dev, struct ocrdma_qp *qp,
2679 			 struct ib_qp_attr *attrs, int attr_mask)
2680 {
2681 	int status = -ENOMEM;
2682 	struct ocrdma_modify_qp *cmd;
2683 
2684 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_MODIFY_QP, sizeof(*cmd));
2685 	if (!cmd)
2686 		return status;
2687 
2688 	cmd->params.id = qp->id;
2689 	cmd->flags = 0;
2690 	if (attr_mask & IB_QP_STATE) {
2691 		cmd->params.max_sge_recv_flags |=
2692 		    (get_ocrdma_qp_state(attrs->qp_state) <<
2693 		     OCRDMA_QP_PARAMS_STATE_SHIFT) &
2694 		    OCRDMA_QP_PARAMS_STATE_MASK;
2695 		cmd->flags |= OCRDMA_QP_PARA_QPS_VALID;
2696 	} else {
2697 		cmd->params.max_sge_recv_flags |=
2698 		    (qp->state << OCRDMA_QP_PARAMS_STATE_SHIFT) &
2699 		    OCRDMA_QP_PARAMS_STATE_MASK;
2700 	}
2701 
2702 	status = ocrdma_set_qp_params(qp, cmd, attrs, attr_mask);
2703 	if (status)
2704 		goto mbx_err;
2705 	status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2706 	if (status)
2707 		goto mbx_err;
2708 
2709 mbx_err:
2710 	kfree(cmd);
2711 	return status;
2712 }
2713 
ocrdma_mbx_destroy_qp(struct ocrdma_dev * dev,struct ocrdma_qp * qp)2714 int ocrdma_mbx_destroy_qp(struct ocrdma_dev *dev, struct ocrdma_qp *qp)
2715 {
2716 	int status = -ENOMEM;
2717 	struct ocrdma_destroy_qp *cmd;
2718 	struct pci_dev *pdev = dev->nic_info.pdev;
2719 
2720 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_QP, sizeof(*cmd));
2721 	if (!cmd)
2722 		return status;
2723 	cmd->qp_id = qp->id;
2724 	status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2725 	if (status)
2726 		goto mbx_err;
2727 
2728 mbx_err:
2729 	kfree(cmd);
2730 	if (qp->sq.va)
2731 		dma_free_coherent(&pdev->dev, qp->sq.len, qp->sq.va, qp->sq.pa);
2732 	if (!qp->srq && qp->rq.va)
2733 		dma_free_coherent(&pdev->dev, qp->rq.len, qp->rq.va, qp->rq.pa);
2734 	if (qp->dpp_enabled)
2735 		qp->pd->num_dpp_qp++;
2736 	return status;
2737 }
2738 
ocrdma_mbx_create_srq(struct ocrdma_dev * dev,struct ocrdma_srq * srq,struct ib_srq_init_attr * srq_attr,struct ocrdma_pd * pd)2739 int ocrdma_mbx_create_srq(struct ocrdma_dev *dev, struct ocrdma_srq *srq,
2740 			  struct ib_srq_init_attr *srq_attr,
2741 			  struct ocrdma_pd *pd)
2742 {
2743 	int status = -ENOMEM;
2744 	int hw_pages, hw_page_size;
2745 	int len;
2746 	struct ocrdma_create_srq_rsp *rsp;
2747 	struct ocrdma_create_srq *cmd;
2748 	dma_addr_t pa;
2749 	struct pci_dev *pdev = dev->nic_info.pdev;
2750 	u32 max_rqe_allocated;
2751 
2752 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_SRQ, sizeof(*cmd));
2753 	if (!cmd)
2754 		return status;
2755 
2756 	cmd->pgsz_pdid = pd->id & OCRDMA_CREATE_SRQ_PD_ID_MASK;
2757 	max_rqe_allocated = srq_attr->attr.max_wr + 1;
2758 	status = ocrdma_build_q_conf(&max_rqe_allocated,
2759 				dev->attr.rqe_size,
2760 				&hw_pages, &hw_page_size);
2761 	if (status) {
2762 		pr_err("%s() req. max_wr=0x%x\n", __func__,
2763 		       srq_attr->attr.max_wr);
2764 		status = -EINVAL;
2765 		goto ret;
2766 	}
2767 	len = hw_pages * hw_page_size;
2768 	srq->rq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL);
2769 	if (!srq->rq.va) {
2770 		status = -ENOMEM;
2771 		goto ret;
2772 	}
2773 	ocrdma_build_q_pages(&cmd->rq_addr[0], hw_pages, pa, hw_page_size);
2774 
2775 	srq->rq.entry_size = dev->attr.rqe_size;
2776 	srq->rq.pa = pa;
2777 	srq->rq.len = len;
2778 	srq->rq.max_cnt = max_rqe_allocated;
2779 
2780 	cmd->max_sge_rqe = ilog2(max_rqe_allocated);
2781 	cmd->max_sge_rqe |= srq_attr->attr.max_sge <<
2782 				OCRDMA_CREATE_SRQ_MAX_SGE_RECV_SHIFT;
2783 
2784 	cmd->pgsz_pdid |= (ilog2(hw_page_size / OCRDMA_MIN_Q_PAGE_SIZE)
2785 		<< OCRDMA_CREATE_SRQ_PG_SZ_SHIFT);
2786 	cmd->pages_rqe_sz |= (dev->attr.rqe_size
2787 		<< OCRDMA_CREATE_SRQ_RQE_SIZE_SHIFT)
2788 		& OCRDMA_CREATE_SRQ_RQE_SIZE_MASK;
2789 	cmd->pages_rqe_sz |= hw_pages << OCRDMA_CREATE_SRQ_NUM_RQ_PAGES_SHIFT;
2790 
2791 	status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2792 	if (status)
2793 		goto mbx_err;
2794 	rsp = (struct ocrdma_create_srq_rsp *)cmd;
2795 	srq->id = rsp->id;
2796 	srq->rq.dbid = rsp->id;
2797 	max_rqe_allocated = ((rsp->max_sge_rqe_allocated &
2798 		OCRDMA_CREATE_SRQ_RSP_MAX_RQE_ALLOCATED_MASK) >>
2799 		OCRDMA_CREATE_SRQ_RSP_MAX_RQE_ALLOCATED_SHIFT);
2800 	max_rqe_allocated = (1 << max_rqe_allocated);
2801 	srq->rq.max_cnt = max_rqe_allocated;
2802 	srq->rq.max_wqe_idx = max_rqe_allocated - 1;
2803 	srq->rq.max_sges = (rsp->max_sge_rqe_allocated &
2804 		OCRDMA_CREATE_SRQ_RSP_MAX_SGE_RECV_ALLOCATED_MASK) >>
2805 		OCRDMA_CREATE_SRQ_RSP_MAX_SGE_RECV_ALLOCATED_SHIFT;
2806 	goto ret;
2807 mbx_err:
2808 	dma_free_coherent(&pdev->dev, srq->rq.len, srq->rq.va, pa);
2809 ret:
2810 	kfree(cmd);
2811 	return status;
2812 }
2813 
ocrdma_mbx_modify_srq(struct ocrdma_srq * srq,struct ib_srq_attr * srq_attr)2814 int ocrdma_mbx_modify_srq(struct ocrdma_srq *srq, struct ib_srq_attr *srq_attr)
2815 {
2816 	int status = -ENOMEM;
2817 	struct ocrdma_modify_srq *cmd;
2818 	struct ocrdma_pd *pd = srq->pd;
2819 	struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
2820 
2821 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_MODIFY_SRQ, sizeof(*cmd));
2822 	if (!cmd)
2823 		return status;
2824 	cmd->id = srq->id;
2825 	cmd->limit_max_rqe |= srq_attr->srq_limit <<
2826 	    OCRDMA_MODIFY_SRQ_LIMIT_SHIFT;
2827 	status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2828 	kfree(cmd);
2829 	return status;
2830 }
2831 
ocrdma_mbx_query_srq(struct ocrdma_srq * srq,struct ib_srq_attr * srq_attr)2832 int ocrdma_mbx_query_srq(struct ocrdma_srq *srq, struct ib_srq_attr *srq_attr)
2833 {
2834 	int status = -ENOMEM;
2835 	struct ocrdma_query_srq *cmd;
2836 	struct ocrdma_dev *dev = get_ocrdma_dev(srq->ibsrq.device);
2837 
2838 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_SRQ, sizeof(*cmd));
2839 	if (!cmd)
2840 		return status;
2841 	cmd->id = srq->rq.dbid;
2842 	status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2843 	if (status == 0) {
2844 		struct ocrdma_query_srq_rsp *rsp =
2845 		    (struct ocrdma_query_srq_rsp *)cmd;
2846 		srq_attr->max_sge =
2847 		    rsp->srq_lmt_max_sge &
2848 		    OCRDMA_QUERY_SRQ_RSP_MAX_SGE_RECV_MASK;
2849 		srq_attr->max_wr =
2850 		    rsp->max_rqe_pdid >> OCRDMA_QUERY_SRQ_RSP_MAX_RQE_SHIFT;
2851 		srq_attr->srq_limit = rsp->srq_lmt_max_sge >>
2852 		    OCRDMA_QUERY_SRQ_RSP_SRQ_LIMIT_SHIFT;
2853 	}
2854 	kfree(cmd);
2855 	return status;
2856 }
2857 
ocrdma_mbx_destroy_srq(struct ocrdma_dev * dev,struct ocrdma_srq * srq)2858 void ocrdma_mbx_destroy_srq(struct ocrdma_dev *dev, struct ocrdma_srq *srq)
2859 {
2860 	struct ocrdma_destroy_srq *cmd;
2861 	struct pci_dev *pdev = dev->nic_info.pdev;
2862 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_SRQ, sizeof(*cmd));
2863 	if (!cmd)
2864 		return;
2865 	cmd->id = srq->id;
2866 	ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2867 	if (srq->rq.va)
2868 		dma_free_coherent(&pdev->dev, srq->rq.len,
2869 				  srq->rq.va, srq->rq.pa);
2870 	kfree(cmd);
2871 }
2872 
ocrdma_mbx_get_dcbx_config(struct ocrdma_dev * dev,u32 ptype,struct ocrdma_dcbx_cfg * dcbxcfg)2873 static int ocrdma_mbx_get_dcbx_config(struct ocrdma_dev *dev, u32 ptype,
2874 				      struct ocrdma_dcbx_cfg *dcbxcfg)
2875 {
2876 	int status;
2877 	dma_addr_t pa;
2878 	struct ocrdma_mqe cmd;
2879 
2880 	struct ocrdma_get_dcbx_cfg_req *req = NULL;
2881 	struct ocrdma_get_dcbx_cfg_rsp *rsp = NULL;
2882 	struct pci_dev *pdev = dev->nic_info.pdev;
2883 	struct ocrdma_mqe_sge *mqe_sge = cmd.u.nonemb_req.sge;
2884 
2885 	memset(&cmd, 0, sizeof(struct ocrdma_mqe));
2886 	cmd.hdr.pyld_len = max_t (u32, sizeof(struct ocrdma_get_dcbx_cfg_rsp),
2887 					sizeof(struct ocrdma_get_dcbx_cfg_req));
2888 	req = dma_alloc_coherent(&pdev->dev, cmd.hdr.pyld_len, &pa, GFP_KERNEL);
2889 	if (!req) {
2890 		status = -ENOMEM;
2891 		goto mem_err;
2892 	}
2893 
2894 	cmd.hdr.spcl_sge_cnt_emb |= (1 << OCRDMA_MQE_HDR_SGE_CNT_SHIFT) &
2895 					OCRDMA_MQE_HDR_SGE_CNT_MASK;
2896 	mqe_sge->pa_lo = (u32) (pa & 0xFFFFFFFFUL);
2897 	mqe_sge->pa_hi = (u32) upper_32_bits(pa);
2898 	mqe_sge->len = cmd.hdr.pyld_len;
2899 
2900 	ocrdma_init_mch(&req->hdr, OCRDMA_CMD_GET_DCBX_CONFIG,
2901 			OCRDMA_SUBSYS_DCBX, cmd.hdr.pyld_len);
2902 	req->param_type = ptype;
2903 
2904 	status = ocrdma_mbx_cmd(dev, &cmd);
2905 	if (status)
2906 		goto mbx_err;
2907 
2908 	rsp = (struct ocrdma_get_dcbx_cfg_rsp *)req;
2909 	ocrdma_le32_to_cpu(rsp, sizeof(struct ocrdma_get_dcbx_cfg_rsp));
2910 	memcpy(dcbxcfg, &rsp->cfg, sizeof(struct ocrdma_dcbx_cfg));
2911 
2912 mbx_err:
2913 	dma_free_coherent(&pdev->dev, cmd.hdr.pyld_len, req, pa);
2914 mem_err:
2915 	return status;
2916 }
2917 
2918 #define OCRDMA_MAX_SERVICE_LEVEL_INDEX	0x08
2919 #define OCRDMA_DEFAULT_SERVICE_LEVEL	0x05
2920 
ocrdma_parse_dcbxcfg_rsp(struct ocrdma_dev * dev,int ptype,struct ocrdma_dcbx_cfg * dcbxcfg,u8 * srvc_lvl)2921 static int ocrdma_parse_dcbxcfg_rsp(struct ocrdma_dev *dev, int ptype,
2922 				    struct ocrdma_dcbx_cfg *dcbxcfg,
2923 				    u8 *srvc_lvl)
2924 {
2925 	int status = -EINVAL, indx, slindx;
2926 	int ventry_cnt;
2927 	struct ocrdma_app_parameter *app_param;
2928 	u8 valid, proto_sel;
2929 	u8 app_prio, pfc_prio;
2930 	u16 proto;
2931 
2932 	if (!(dcbxcfg->tcv_aev_opv_st & OCRDMA_DCBX_STATE_MASK)) {
2933 		pr_info("%s ocrdma%d DCBX is disabled\n",
2934 			dev_name(&dev->nic_info.pdev->dev), dev->id);
2935 		goto out;
2936 	}
2937 
2938 	if (!ocrdma_is_enabled_and_synced(dcbxcfg->pfc_state)) {
2939 		pr_info("%s ocrdma%d priority flow control(%s) is %s%s\n",
2940 			dev_name(&dev->nic_info.pdev->dev), dev->id,
2941 			(ptype > 0 ? "operational" : "admin"),
2942 			(dcbxcfg->pfc_state & OCRDMA_STATE_FLAG_ENABLED) ?
2943 			"enabled" : "disabled",
2944 			(dcbxcfg->pfc_state & OCRDMA_STATE_FLAG_SYNC) ?
2945 			"" : ", not sync'ed");
2946 		goto out;
2947 	} else {
2948 		pr_info("%s ocrdma%d priority flow control is enabled and sync'ed\n",
2949 			dev_name(&dev->nic_info.pdev->dev), dev->id);
2950 	}
2951 
2952 	ventry_cnt = (dcbxcfg->tcv_aev_opv_st >>
2953 				OCRDMA_DCBX_APP_ENTRY_SHIFT)
2954 				& OCRDMA_DCBX_STATE_MASK;
2955 
2956 	for (indx = 0; indx < ventry_cnt; indx++) {
2957 		app_param = &dcbxcfg->app_param[indx];
2958 		valid = (app_param->valid_proto_app >>
2959 				OCRDMA_APP_PARAM_VALID_SHIFT)
2960 				& OCRDMA_APP_PARAM_VALID_MASK;
2961 		proto_sel = (app_param->valid_proto_app
2962 				>>  OCRDMA_APP_PARAM_PROTO_SEL_SHIFT)
2963 				& OCRDMA_APP_PARAM_PROTO_SEL_MASK;
2964 		proto = app_param->valid_proto_app &
2965 				OCRDMA_APP_PARAM_APP_PROTO_MASK;
2966 
2967 		if (
2968 			valid && proto == ETH_P_IBOE &&
2969 			proto_sel == OCRDMA_PROTO_SELECT_L2) {
2970 			for (slindx = 0; slindx <
2971 				OCRDMA_MAX_SERVICE_LEVEL_INDEX; slindx++) {
2972 				app_prio = ocrdma_get_app_prio(
2973 						(u8 *)app_param->app_prio,
2974 						slindx);
2975 				pfc_prio = ocrdma_get_pfc_prio(
2976 						(u8 *)dcbxcfg->pfc_prio,
2977 						slindx);
2978 
2979 				if (app_prio && pfc_prio) {
2980 					*srvc_lvl = slindx;
2981 					status = 0;
2982 					goto out;
2983 				}
2984 			}
2985 			if (slindx == OCRDMA_MAX_SERVICE_LEVEL_INDEX) {
2986 				pr_info("%s ocrdma%d application priority not set for 0x%x protocol\n",
2987 					dev_name(&dev->nic_info.pdev->dev),
2988 					dev->id, proto);
2989 			}
2990 		}
2991 	}
2992 
2993 out:
2994 	return status;
2995 }
2996 
ocrdma_init_service_level(struct ocrdma_dev * dev)2997 void ocrdma_init_service_level(struct ocrdma_dev *dev)
2998 {
2999 	int status = 0, indx;
3000 	struct ocrdma_dcbx_cfg dcbxcfg;
3001 	u8 srvc_lvl = OCRDMA_DEFAULT_SERVICE_LEVEL;
3002 	int ptype = OCRDMA_PARAMETER_TYPE_OPER;
3003 
3004 	for (indx = 0; indx < 2; indx++) {
3005 		status = ocrdma_mbx_get_dcbx_config(dev, ptype, &dcbxcfg);
3006 		if (status) {
3007 			pr_err("%s(): status=%d\n", __func__, status);
3008 			ptype = OCRDMA_PARAMETER_TYPE_ADMIN;
3009 			continue;
3010 		}
3011 
3012 		status = ocrdma_parse_dcbxcfg_rsp(dev, ptype,
3013 						  &dcbxcfg, &srvc_lvl);
3014 		if (status) {
3015 			ptype = OCRDMA_PARAMETER_TYPE_ADMIN;
3016 			continue;
3017 		}
3018 
3019 		break;
3020 	}
3021 
3022 	if (status)
3023 		pr_info("%s ocrdma%d service level default\n",
3024 			dev_name(&dev->nic_info.pdev->dev), dev->id);
3025 	else
3026 		pr_info("%s ocrdma%d service level %d\n",
3027 			dev_name(&dev->nic_info.pdev->dev), dev->id,
3028 			srvc_lvl);
3029 
3030 	dev->pfc_state = ocrdma_is_enabled_and_synced(dcbxcfg.pfc_state);
3031 	dev->sl = srvc_lvl;
3032 }
3033 
ocrdma_alloc_av(struct ocrdma_dev * dev,struct ocrdma_ah * ah)3034 int ocrdma_alloc_av(struct ocrdma_dev *dev, struct ocrdma_ah *ah)
3035 {
3036 	int i;
3037 	int status = -EINVAL;
3038 	struct ocrdma_av *av;
3039 	unsigned long flags;
3040 
3041 	av = dev->av_tbl.va;
3042 	spin_lock_irqsave(&dev->av_tbl.lock, flags);
3043 	for (i = 0; i < dev->av_tbl.num_ah; i++) {
3044 		if (av->valid == 0) {
3045 			av->valid = OCRDMA_AV_VALID;
3046 			ah->av = av;
3047 			ah->id = i;
3048 			status = 0;
3049 			break;
3050 		}
3051 		av++;
3052 	}
3053 	if (i == dev->av_tbl.num_ah)
3054 		status = -EAGAIN;
3055 	spin_unlock_irqrestore(&dev->av_tbl.lock, flags);
3056 	return status;
3057 }
3058 
ocrdma_free_av(struct ocrdma_dev * dev,struct ocrdma_ah * ah)3059 void ocrdma_free_av(struct ocrdma_dev *dev, struct ocrdma_ah *ah)
3060 {
3061 	unsigned long flags;
3062 	spin_lock_irqsave(&dev->av_tbl.lock, flags);
3063 	ah->av->valid = 0;
3064 	spin_unlock_irqrestore(&dev->av_tbl.lock, flags);
3065 }
3066 
ocrdma_create_eqs(struct ocrdma_dev * dev)3067 static int ocrdma_create_eqs(struct ocrdma_dev *dev)
3068 {
3069 	int num_eq, i, status = 0;
3070 	int irq;
3071 	unsigned long flags = 0;
3072 
3073 	num_eq = dev->nic_info.msix.num_vectors -
3074 			dev->nic_info.msix.start_vector;
3075 	if (dev->nic_info.intr_mode == BE_INTERRUPT_MODE_INTX) {
3076 		num_eq = 1;
3077 		flags = IRQF_SHARED;
3078 	} else {
3079 		num_eq = min_t(u32, num_eq, num_online_cpus());
3080 	}
3081 
3082 	if (!num_eq)
3083 		return -EINVAL;
3084 
3085 	dev->eq_tbl = kcalloc(num_eq, sizeof(struct ocrdma_eq), GFP_KERNEL);
3086 	if (!dev->eq_tbl)
3087 		return -ENOMEM;
3088 
3089 	for (i = 0; i < num_eq; i++) {
3090 		status = ocrdma_create_eq(dev, &dev->eq_tbl[i],
3091 					OCRDMA_EQ_LEN);
3092 		if (status) {
3093 			status = -EINVAL;
3094 			break;
3095 		}
3096 		sprintf(dev->eq_tbl[i].irq_name, "ocrdma%d-%d",
3097 			dev->id, i);
3098 		irq = ocrdma_get_irq(dev, &dev->eq_tbl[i]);
3099 		status = request_irq(irq, ocrdma_irq_handler, flags,
3100 				     dev->eq_tbl[i].irq_name,
3101 				     &dev->eq_tbl[i]);
3102 		if (status)
3103 			goto done;
3104 		dev->eq_cnt += 1;
3105 	}
3106 	/* one eq is sufficient for data path to work */
3107 	return 0;
3108 done:
3109 	ocrdma_destroy_eqs(dev);
3110 	return status;
3111 }
3112 
ocrdma_mbx_modify_eqd(struct ocrdma_dev * dev,struct ocrdma_eq * eq,int num)3113 static int ocrdma_mbx_modify_eqd(struct ocrdma_dev *dev, struct ocrdma_eq *eq,
3114 				 int num)
3115 {
3116 	int i, status;
3117 	struct ocrdma_modify_eqd_req *cmd;
3118 
3119 	cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_MODIFY_EQ_DELAY, sizeof(*cmd));
3120 	if (!cmd)
3121 		return -ENOMEM;
3122 
3123 	ocrdma_init_mch(&cmd->cmd.req, OCRDMA_CMD_MODIFY_EQ_DELAY,
3124 			OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
3125 
3126 	cmd->cmd.num_eq = num;
3127 	for (i = 0; i < num; i++) {
3128 		cmd->cmd.set_eqd[i].eq_id = eq[i].q.id;
3129 		cmd->cmd.set_eqd[i].phase = 0;
3130 		cmd->cmd.set_eqd[i].delay_multiplier =
3131 				(eq[i].aic_obj.prev_eqd * 65)/100;
3132 	}
3133 	status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
3134 
3135 	kfree(cmd);
3136 	return status;
3137 }
3138 
ocrdma_modify_eqd(struct ocrdma_dev * dev,struct ocrdma_eq * eq,int num)3139 static int ocrdma_modify_eqd(struct ocrdma_dev *dev, struct ocrdma_eq *eq,
3140 			     int num)
3141 {
3142 	int num_eqs, i = 0;
3143 	if (num > 8) {
3144 		while (num) {
3145 			num_eqs = min(num, 8);
3146 			ocrdma_mbx_modify_eqd(dev, &eq[i], num_eqs);
3147 			i += num_eqs;
3148 			num -= num_eqs;
3149 		}
3150 	} else {
3151 		ocrdma_mbx_modify_eqd(dev, eq, num);
3152 	}
3153 	return 0;
3154 }
3155 
ocrdma_eqd_set_task(struct work_struct * work)3156 void ocrdma_eqd_set_task(struct work_struct *work)
3157 {
3158 	struct ocrdma_dev *dev =
3159 		container_of(work, struct ocrdma_dev, eqd_work.work);
3160 	struct ocrdma_eq *eq = NULL;
3161 	int i, num = 0;
3162 	u64 eq_intr;
3163 
3164 	for (i = 0; i < dev->eq_cnt; i++) {
3165 		eq = &dev->eq_tbl[i];
3166 		if (eq->aic_obj.eq_intr_cnt > eq->aic_obj.prev_eq_intr_cnt) {
3167 			eq_intr = eq->aic_obj.eq_intr_cnt -
3168 				  eq->aic_obj.prev_eq_intr_cnt;
3169 			if ((eq_intr > EQ_INTR_PER_SEC_THRSH_HI) &&
3170 			    (eq->aic_obj.prev_eqd == EQ_AIC_MIN_EQD)) {
3171 				eq->aic_obj.prev_eqd = EQ_AIC_MAX_EQD;
3172 				num++;
3173 			} else if ((eq_intr < EQ_INTR_PER_SEC_THRSH_LOW) &&
3174 				   (eq->aic_obj.prev_eqd == EQ_AIC_MAX_EQD)) {
3175 				eq->aic_obj.prev_eqd = EQ_AIC_MIN_EQD;
3176 				num++;
3177 			}
3178 		}
3179 		eq->aic_obj.prev_eq_intr_cnt = eq->aic_obj.eq_intr_cnt;
3180 	}
3181 
3182 	if (num)
3183 		ocrdma_modify_eqd(dev, &dev->eq_tbl[0], num);
3184 	schedule_delayed_work(&dev->eqd_work, msecs_to_jiffies(1000));
3185 }
3186 
ocrdma_init_hw(struct ocrdma_dev * dev)3187 int ocrdma_init_hw(struct ocrdma_dev *dev)
3188 {
3189 	int status;
3190 
3191 	/* create the eqs  */
3192 	status = ocrdma_create_eqs(dev);
3193 	if (status)
3194 		goto qpeq_err;
3195 	status = ocrdma_create_mq(dev);
3196 	if (status)
3197 		goto mq_err;
3198 	status = ocrdma_mbx_query_fw_config(dev);
3199 	if (status)
3200 		goto conf_err;
3201 	status = ocrdma_mbx_query_dev(dev);
3202 	if (status)
3203 		goto conf_err;
3204 	status = ocrdma_mbx_query_fw_ver(dev);
3205 	if (status)
3206 		goto conf_err;
3207 	status = ocrdma_mbx_create_ah_tbl(dev);
3208 	if (status)
3209 		goto conf_err;
3210 	status = ocrdma_mbx_get_phy_info(dev);
3211 	if (status)
3212 		goto info_attrb_err;
3213 	status = ocrdma_mbx_get_ctrl_attribs(dev);
3214 	if (status)
3215 		goto info_attrb_err;
3216 
3217 	return 0;
3218 
3219 info_attrb_err:
3220 	ocrdma_mbx_delete_ah_tbl(dev);
3221 conf_err:
3222 	ocrdma_destroy_mq(dev);
3223 mq_err:
3224 	ocrdma_destroy_eqs(dev);
3225 qpeq_err:
3226 	pr_err("%s() status=%d\n", __func__, status);
3227 	return status;
3228 }
3229 
ocrdma_cleanup_hw(struct ocrdma_dev * dev)3230 void ocrdma_cleanup_hw(struct ocrdma_dev *dev)
3231 {
3232 	ocrdma_free_pd_pool(dev);
3233 	ocrdma_mbx_delete_ah_tbl(dev);
3234 
3235 	/* cleanup the control path */
3236 	ocrdma_destroy_mq(dev);
3237 
3238 	/* cleanup the eqs */
3239 	ocrdma_destroy_eqs(dev);
3240 }
3241