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Merge remote-tracking branch 'selinux/next'
[deliverable/linux.git] / drivers / infiniband / hw / ocrdma / ocrdma_hw.c
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
48 #include <rdma/ib_verbs.h>
49 #include <rdma/ib_user_verbs.h>
50 #include <rdma/ib_cache.h>
51
52 #include "ocrdma.h"
53 #include "ocrdma_hw.h"
54 #include "ocrdma_verbs.h"
55 #include "ocrdma_ah.h"
56
57 enum mbx_status {
58 OCRDMA_MBX_STATUS_FAILED = 1,
59 OCRDMA_MBX_STATUS_ILLEGAL_FIELD = 3,
60 OCRDMA_MBX_STATUS_OOR = 100,
61 OCRDMA_MBX_STATUS_INVALID_PD = 101,
62 OCRDMA_MBX_STATUS_PD_INUSE = 102,
63 OCRDMA_MBX_STATUS_INVALID_CQ = 103,
64 OCRDMA_MBX_STATUS_INVALID_QP = 104,
65 OCRDMA_MBX_STATUS_INVALID_LKEY = 105,
66 OCRDMA_MBX_STATUS_ORD_EXCEEDS = 106,
67 OCRDMA_MBX_STATUS_IRD_EXCEEDS = 107,
68 OCRDMA_MBX_STATUS_SENDQ_WQE_EXCEEDS = 108,
69 OCRDMA_MBX_STATUS_RECVQ_RQE_EXCEEDS = 109,
70 OCRDMA_MBX_STATUS_SGE_SEND_EXCEEDS = 110,
71 OCRDMA_MBX_STATUS_SGE_WRITE_EXCEEDS = 111,
72 OCRDMA_MBX_STATUS_SGE_RECV_EXCEEDS = 112,
73 OCRDMA_MBX_STATUS_INVALID_STATE_CHANGE = 113,
74 OCRDMA_MBX_STATUS_MW_BOUND = 114,
75 OCRDMA_MBX_STATUS_INVALID_VA = 115,
76 OCRDMA_MBX_STATUS_INVALID_LENGTH = 116,
77 OCRDMA_MBX_STATUS_INVALID_FBO = 117,
78 OCRDMA_MBX_STATUS_INVALID_ACC_RIGHTS = 118,
79 OCRDMA_MBX_STATUS_INVALID_PBE_SIZE = 119,
80 OCRDMA_MBX_STATUS_INVALID_PBL_ENTRY = 120,
81 OCRDMA_MBX_STATUS_INVALID_PBL_SHIFT = 121,
82 OCRDMA_MBX_STATUS_INVALID_SRQ_ID = 129,
83 OCRDMA_MBX_STATUS_SRQ_ERROR = 133,
84 OCRDMA_MBX_STATUS_RQE_EXCEEDS = 134,
85 OCRDMA_MBX_STATUS_MTU_EXCEEDS = 135,
86 OCRDMA_MBX_STATUS_MAX_QP_EXCEEDS = 136,
87 OCRDMA_MBX_STATUS_SRQ_LIMIT_EXCEEDS = 137,
88 OCRDMA_MBX_STATUS_SRQ_SIZE_UNDERUNS = 138,
89 OCRDMA_MBX_STATUS_QP_BOUND = 130,
90 OCRDMA_MBX_STATUS_INVALID_CHANGE = 139,
91 OCRDMA_MBX_STATUS_ATOMIC_OPS_UNSUP = 140,
92 OCRDMA_MBX_STATUS_INVALID_RNR_NAK_TIMER = 141,
93 OCRDMA_MBX_STATUS_MW_STILL_BOUND = 142,
94 OCRDMA_MBX_STATUS_PKEY_INDEX_INVALID = 143,
95 OCRDMA_MBX_STATUS_PKEY_INDEX_EXCEEDS = 144
96 };
97
98 enum additional_status {
99 OCRDMA_MBX_ADDI_STATUS_INSUFFICIENT_RESOURCES = 22
100 };
101
102 enum cqe_status {
103 OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_PRIVILEDGES = 1,
104 OCRDMA_MBX_CQE_STATUS_INVALID_PARAMETER = 2,
105 OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_RESOURCES = 3,
106 OCRDMA_MBX_CQE_STATUS_QUEUE_FLUSHING = 4,
107 OCRDMA_MBX_CQE_STATUS_DMA_FAILED = 5
108 };
109
110 static inline void *ocrdma_get_eqe(struct ocrdma_eq *eq)
111 {
112 return eq->q.va + (eq->q.tail * sizeof(struct ocrdma_eqe));
113 }
114
115 static inline void ocrdma_eq_inc_tail(struct ocrdma_eq *eq)
116 {
117 eq->q.tail = (eq->q.tail + 1) & (OCRDMA_EQ_LEN - 1);
118 }
119
120 static inline void *ocrdma_get_mcqe(struct ocrdma_dev *dev)
121 {
122 struct ocrdma_mcqe *cqe = (struct ocrdma_mcqe *)
123 (dev->mq.cq.va + (dev->mq.cq.tail * sizeof(struct ocrdma_mcqe)));
124
125 if (!(le32_to_cpu(cqe->valid_ae_cmpl_cons) & OCRDMA_MCQE_VALID_MASK))
126 return NULL;
127 return cqe;
128 }
129
130 static inline void ocrdma_mcq_inc_tail(struct ocrdma_dev *dev)
131 {
132 dev->mq.cq.tail = (dev->mq.cq.tail + 1) & (OCRDMA_MQ_CQ_LEN - 1);
133 }
134
135 static inline struct ocrdma_mqe *ocrdma_get_mqe(struct ocrdma_dev *dev)
136 {
137 return dev->mq.sq.va + (dev->mq.sq.head * sizeof(struct ocrdma_mqe));
138 }
139
140 static inline void ocrdma_mq_inc_head(struct ocrdma_dev *dev)
141 {
142 dev->mq.sq.head = (dev->mq.sq.head + 1) & (OCRDMA_MQ_LEN - 1);
143 }
144
145 static inline void *ocrdma_get_mqe_rsp(struct ocrdma_dev *dev)
146 {
147 return dev->mq.sq.va + (dev->mqe_ctx.tag * sizeof(struct ocrdma_mqe));
148 }
149
150 enum ib_qp_state get_ibqp_state(enum ocrdma_qp_state qps)
151 {
152 switch (qps) {
153 case OCRDMA_QPS_RST:
154 return IB_QPS_RESET;
155 case OCRDMA_QPS_INIT:
156 return IB_QPS_INIT;
157 case OCRDMA_QPS_RTR:
158 return IB_QPS_RTR;
159 case OCRDMA_QPS_RTS:
160 return IB_QPS_RTS;
161 case OCRDMA_QPS_SQD:
162 case OCRDMA_QPS_SQ_DRAINING:
163 return IB_QPS_SQD;
164 case OCRDMA_QPS_SQE:
165 return IB_QPS_SQE;
166 case OCRDMA_QPS_ERR:
167 return IB_QPS_ERR;
168 }
169 return IB_QPS_ERR;
170 }
171
172 static enum ocrdma_qp_state get_ocrdma_qp_state(enum ib_qp_state qps)
173 {
174 switch (qps) {
175 case IB_QPS_RESET:
176 return OCRDMA_QPS_RST;
177 case IB_QPS_INIT:
178 return OCRDMA_QPS_INIT;
179 case IB_QPS_RTR:
180 return OCRDMA_QPS_RTR;
181 case IB_QPS_RTS:
182 return OCRDMA_QPS_RTS;
183 case IB_QPS_SQD:
184 return OCRDMA_QPS_SQD;
185 case IB_QPS_SQE:
186 return OCRDMA_QPS_SQE;
187 case IB_QPS_ERR:
188 return OCRDMA_QPS_ERR;
189 }
190 return OCRDMA_QPS_ERR;
191 }
192
193 static int ocrdma_get_mbx_errno(u32 status)
194 {
195 int err_num;
196 u8 mbox_status = (status & OCRDMA_MBX_RSP_STATUS_MASK) >>
197 OCRDMA_MBX_RSP_STATUS_SHIFT;
198 u8 add_status = (status & OCRDMA_MBX_RSP_ASTATUS_MASK) >>
199 OCRDMA_MBX_RSP_ASTATUS_SHIFT;
200
201 switch (mbox_status) {
202 case OCRDMA_MBX_STATUS_OOR:
203 case OCRDMA_MBX_STATUS_MAX_QP_EXCEEDS:
204 err_num = -EAGAIN;
205 break;
206
207 case OCRDMA_MBX_STATUS_INVALID_PD:
208 case OCRDMA_MBX_STATUS_INVALID_CQ:
209 case OCRDMA_MBX_STATUS_INVALID_SRQ_ID:
210 case OCRDMA_MBX_STATUS_INVALID_QP:
211 case OCRDMA_MBX_STATUS_INVALID_CHANGE:
212 case OCRDMA_MBX_STATUS_MTU_EXCEEDS:
213 case OCRDMA_MBX_STATUS_INVALID_RNR_NAK_TIMER:
214 case OCRDMA_MBX_STATUS_PKEY_INDEX_INVALID:
215 case OCRDMA_MBX_STATUS_PKEY_INDEX_EXCEEDS:
216 case OCRDMA_MBX_STATUS_ILLEGAL_FIELD:
217 case OCRDMA_MBX_STATUS_INVALID_PBL_ENTRY:
218 case OCRDMA_MBX_STATUS_INVALID_LKEY:
219 case OCRDMA_MBX_STATUS_INVALID_VA:
220 case OCRDMA_MBX_STATUS_INVALID_LENGTH:
221 case OCRDMA_MBX_STATUS_INVALID_FBO:
222 case OCRDMA_MBX_STATUS_INVALID_ACC_RIGHTS:
223 case OCRDMA_MBX_STATUS_INVALID_PBE_SIZE:
224 case OCRDMA_MBX_STATUS_ATOMIC_OPS_UNSUP:
225 case OCRDMA_MBX_STATUS_SRQ_ERROR:
226 case OCRDMA_MBX_STATUS_SRQ_SIZE_UNDERUNS:
227 err_num = -EINVAL;
228 break;
229
230 case OCRDMA_MBX_STATUS_PD_INUSE:
231 case OCRDMA_MBX_STATUS_QP_BOUND:
232 case OCRDMA_MBX_STATUS_MW_STILL_BOUND:
233 case OCRDMA_MBX_STATUS_MW_BOUND:
234 err_num = -EBUSY;
235 break;
236
237 case OCRDMA_MBX_STATUS_RECVQ_RQE_EXCEEDS:
238 case OCRDMA_MBX_STATUS_SGE_RECV_EXCEEDS:
239 case OCRDMA_MBX_STATUS_RQE_EXCEEDS:
240 case OCRDMA_MBX_STATUS_SRQ_LIMIT_EXCEEDS:
241 case OCRDMA_MBX_STATUS_ORD_EXCEEDS:
242 case OCRDMA_MBX_STATUS_IRD_EXCEEDS:
243 case OCRDMA_MBX_STATUS_SENDQ_WQE_EXCEEDS:
244 case OCRDMA_MBX_STATUS_SGE_SEND_EXCEEDS:
245 case OCRDMA_MBX_STATUS_SGE_WRITE_EXCEEDS:
246 err_num = -ENOBUFS;
247 break;
248
249 case OCRDMA_MBX_STATUS_FAILED:
250 switch (add_status) {
251 case OCRDMA_MBX_ADDI_STATUS_INSUFFICIENT_RESOURCES:
252 err_num = -EAGAIN;
253 break;
254 }
255 default:
256 err_num = -EFAULT;
257 }
258 return err_num;
259 }
260
261 char *port_speed_string(struct ocrdma_dev *dev)
262 {
263 char *str = "";
264 u16 speeds_supported;
265
266 speeds_supported = dev->phy.fixed_speeds_supported |
267 dev->phy.auto_speeds_supported;
268 if (speeds_supported & OCRDMA_PHY_SPEED_40GBPS)
269 str = "40Gbps ";
270 else if (speeds_supported & OCRDMA_PHY_SPEED_10GBPS)
271 str = "10Gbps ";
272 else if (speeds_supported & OCRDMA_PHY_SPEED_1GBPS)
273 str = "1Gbps ";
274
275 return str;
276 }
277
278 static int ocrdma_get_mbx_cqe_errno(u16 cqe_status)
279 {
280 int err_num = -EINVAL;
281
282 switch (cqe_status) {
283 case OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_PRIVILEDGES:
284 err_num = -EPERM;
285 break;
286 case OCRDMA_MBX_CQE_STATUS_INVALID_PARAMETER:
287 err_num = -EINVAL;
288 break;
289 case OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_RESOURCES:
290 case OCRDMA_MBX_CQE_STATUS_QUEUE_FLUSHING:
291 err_num = -EINVAL;
292 break;
293 case OCRDMA_MBX_CQE_STATUS_DMA_FAILED:
294 default:
295 err_num = -EINVAL;
296 break;
297 }
298 return err_num;
299 }
300
301 void ocrdma_ring_cq_db(struct ocrdma_dev *dev, u16 cq_id, bool armed,
302 bool solicited, u16 cqe_popped)
303 {
304 u32 val = cq_id & OCRDMA_DB_CQ_RING_ID_MASK;
305
306 val |= ((cq_id & OCRDMA_DB_CQ_RING_ID_EXT_MASK) <<
307 OCRDMA_DB_CQ_RING_ID_EXT_MASK_SHIFT);
308
309 if (armed)
310 val |= (1 << OCRDMA_DB_CQ_REARM_SHIFT);
311 if (solicited)
312 val |= (1 << OCRDMA_DB_CQ_SOLICIT_SHIFT);
313 val |= (cqe_popped << OCRDMA_DB_CQ_NUM_POPPED_SHIFT);
314 iowrite32(val, dev->nic_info.db + OCRDMA_DB_CQ_OFFSET);
315 }
316
317 static void ocrdma_ring_mq_db(struct ocrdma_dev *dev)
318 {
319 u32 val = 0;
320
321 val |= dev->mq.sq.id & OCRDMA_MQ_ID_MASK;
322 val |= 1 << OCRDMA_MQ_NUM_MQE_SHIFT;
323 iowrite32(val, dev->nic_info.db + OCRDMA_DB_MQ_OFFSET);
324 }
325
326 static void ocrdma_ring_eq_db(struct ocrdma_dev *dev, u16 eq_id,
327 bool arm, bool clear_int, u16 num_eqe)
328 {
329 u32 val = 0;
330
331 val |= eq_id & OCRDMA_EQ_ID_MASK;
332 val |= ((eq_id & OCRDMA_EQ_ID_EXT_MASK) << OCRDMA_EQ_ID_EXT_MASK_SHIFT);
333 if (arm)
334 val |= (1 << OCRDMA_REARM_SHIFT);
335 if (clear_int)
336 val |= (1 << OCRDMA_EQ_CLR_SHIFT);
337 val |= (1 << OCRDMA_EQ_TYPE_SHIFT);
338 val |= (num_eqe << OCRDMA_NUM_EQE_SHIFT);
339 iowrite32(val, dev->nic_info.db + OCRDMA_DB_EQ_OFFSET);
340 }
341
342 static void ocrdma_init_mch(struct ocrdma_mbx_hdr *cmd_hdr,
343 u8 opcode, u8 subsys, u32 cmd_len)
344 {
345 cmd_hdr->subsys_op = (opcode | (subsys << OCRDMA_MCH_SUBSYS_SHIFT));
346 cmd_hdr->timeout = 20; /* seconds */
347 cmd_hdr->cmd_len = cmd_len - sizeof(struct ocrdma_mbx_hdr);
348 }
349
350 static void *ocrdma_init_emb_mqe(u8 opcode, u32 cmd_len)
351 {
352 struct ocrdma_mqe *mqe;
353
354 mqe = kzalloc(sizeof(struct ocrdma_mqe), GFP_KERNEL);
355 if (!mqe)
356 return NULL;
357 mqe->hdr.spcl_sge_cnt_emb |=
358 (OCRDMA_MQE_EMBEDDED << OCRDMA_MQE_HDR_EMB_SHIFT) &
359 OCRDMA_MQE_HDR_EMB_MASK;
360 mqe->hdr.pyld_len = cmd_len - sizeof(struct ocrdma_mqe_hdr);
361
362 ocrdma_init_mch(&mqe->u.emb_req.mch, opcode, OCRDMA_SUBSYS_ROCE,
363 mqe->hdr.pyld_len);
364 return mqe;
365 }
366
367 static void ocrdma_free_q(struct ocrdma_dev *dev, struct ocrdma_queue_info *q)
368 {
369 dma_free_coherent(&dev->nic_info.pdev->dev, q->size, q->va, q->dma);
370 }
371
372 static int ocrdma_alloc_q(struct ocrdma_dev *dev,
373 struct ocrdma_queue_info *q, u16 len, u16 entry_size)
374 {
375 memset(q, 0, sizeof(*q));
376 q->len = len;
377 q->entry_size = entry_size;
378 q->size = len * entry_size;
379 q->va = dma_alloc_coherent(&dev->nic_info.pdev->dev, q->size,
380 &q->dma, GFP_KERNEL);
381 if (!q->va)
382 return -ENOMEM;
383 memset(q->va, 0, q->size);
384 return 0;
385 }
386
387 static void ocrdma_build_q_pages(struct ocrdma_pa *q_pa, int cnt,
388 dma_addr_t host_pa, int hw_page_size)
389 {
390 int i;
391
392 for (i = 0; i < cnt; i++) {
393 q_pa[i].lo = (u32) (host_pa & 0xffffffff);
394 q_pa[i].hi = (u32) upper_32_bits(host_pa);
395 host_pa += hw_page_size;
396 }
397 }
398
399 static int ocrdma_mbx_delete_q(struct ocrdma_dev *dev,
400 struct ocrdma_queue_info *q, int queue_type)
401 {
402 u8 opcode = 0;
403 int status;
404 struct ocrdma_delete_q_req *cmd = dev->mbx_cmd;
405
406 switch (queue_type) {
407 case QTYPE_MCCQ:
408 opcode = OCRDMA_CMD_DELETE_MQ;
409 break;
410 case QTYPE_CQ:
411 opcode = OCRDMA_CMD_DELETE_CQ;
412 break;
413 case QTYPE_EQ:
414 opcode = OCRDMA_CMD_DELETE_EQ;
415 break;
416 default:
417 BUG();
418 }
419 memset(cmd, 0, sizeof(*cmd));
420 ocrdma_init_mch(&cmd->req, opcode, OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
421 cmd->id = q->id;
422
423 status = be_roce_mcc_cmd(dev->nic_info.netdev,
424 cmd, sizeof(*cmd), NULL, NULL);
425 if (!status)
426 q->created = false;
427 return status;
428 }
429
430 static int ocrdma_mbx_create_eq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
431 {
432 int status;
433 struct ocrdma_create_eq_req *cmd = dev->mbx_cmd;
434 struct ocrdma_create_eq_rsp *rsp = dev->mbx_cmd;
435
436 memset(cmd, 0, sizeof(*cmd));
437 ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_EQ, OCRDMA_SUBSYS_COMMON,
438 sizeof(*cmd));
439
440 cmd->req.rsvd_version = 2;
441 cmd->num_pages = 4;
442 cmd->valid = OCRDMA_CREATE_EQ_VALID;
443 cmd->cnt = 4 << OCRDMA_CREATE_EQ_CNT_SHIFT;
444
445 ocrdma_build_q_pages(&cmd->pa[0], cmd->num_pages, eq->q.dma,
446 PAGE_SIZE_4K);
447 status = be_roce_mcc_cmd(dev->nic_info.netdev, cmd, sizeof(*cmd), NULL,
448 NULL);
449 if (!status) {
450 eq->q.id = rsp->vector_eqid & 0xffff;
451 eq->vector = (rsp->vector_eqid >> 16) & 0xffff;
452 eq->q.created = true;
453 }
454 return status;
455 }
456
457 static int ocrdma_create_eq(struct ocrdma_dev *dev,
458 struct ocrdma_eq *eq, u16 q_len)
459 {
460 int status;
461
462 status = ocrdma_alloc_q(dev, &eq->q, OCRDMA_EQ_LEN,
463 sizeof(struct ocrdma_eqe));
464 if (status)
465 return status;
466
467 status = ocrdma_mbx_create_eq(dev, eq);
468 if (status)
469 goto mbx_err;
470 eq->dev = dev;
471 ocrdma_ring_eq_db(dev, eq->q.id, true, true, 0);
472
473 return 0;
474 mbx_err:
475 ocrdma_free_q(dev, &eq->q);
476 return status;
477 }
478
479 int ocrdma_get_irq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
480 {
481 int irq;
482
483 if (dev->nic_info.intr_mode == BE_INTERRUPT_MODE_INTX)
484 irq = dev->nic_info.pdev->irq;
485 else
486 irq = dev->nic_info.msix.vector_list[eq->vector];
487 return irq;
488 }
489
490 static void _ocrdma_destroy_eq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
491 {
492 if (eq->q.created) {
493 ocrdma_mbx_delete_q(dev, &eq->q, QTYPE_EQ);
494 ocrdma_free_q(dev, &eq->q);
495 }
496 }
497
498 static void ocrdma_destroy_eq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
499 {
500 int irq;
501
502 /* disarm EQ so that interrupts are not generated
503 * during freeing and EQ delete is in progress.
504 */
505 ocrdma_ring_eq_db(dev, eq->q.id, false, false, 0);
506
507 irq = ocrdma_get_irq(dev, eq);
508 free_irq(irq, eq);
509 _ocrdma_destroy_eq(dev, eq);
510 }
511
512 static void ocrdma_destroy_eqs(struct ocrdma_dev *dev)
513 {
514 int i;
515
516 for (i = 0; i < dev->eq_cnt; i++)
517 ocrdma_destroy_eq(dev, &dev->eq_tbl[i]);
518 }
519
520 static int ocrdma_mbx_mq_cq_create(struct ocrdma_dev *dev,
521 struct ocrdma_queue_info *cq,
522 struct ocrdma_queue_info *eq)
523 {
524 struct ocrdma_create_cq_cmd *cmd = dev->mbx_cmd;
525 struct ocrdma_create_cq_cmd_rsp *rsp = dev->mbx_cmd;
526 int status;
527
528 memset(cmd, 0, sizeof(*cmd));
529 ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_CQ,
530 OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
531
532 cmd->req.rsvd_version = OCRDMA_CREATE_CQ_VER2;
533 cmd->pgsz_pgcnt = (cq->size / OCRDMA_MIN_Q_PAGE_SIZE) <<
534 OCRDMA_CREATE_CQ_PAGE_SIZE_SHIFT;
535 cmd->pgsz_pgcnt |= PAGES_4K_SPANNED(cq->va, cq->size);
536
537 cmd->ev_cnt_flags = OCRDMA_CREATE_CQ_DEF_FLAGS;
538 cmd->eqn = eq->id;
539 cmd->pdid_cqecnt = cq->size / sizeof(struct ocrdma_mcqe);
540
541 ocrdma_build_q_pages(&cmd->pa[0], cq->size / OCRDMA_MIN_Q_PAGE_SIZE,
542 cq->dma, PAGE_SIZE_4K);
543 status = be_roce_mcc_cmd(dev->nic_info.netdev,
544 cmd, sizeof(*cmd), NULL, NULL);
545 if (!status) {
546 cq->id = (u16) (rsp->cq_id & OCRDMA_CREATE_CQ_RSP_CQ_ID_MASK);
547 cq->created = true;
548 }
549 return status;
550 }
551
552 static u32 ocrdma_encoded_q_len(int q_len)
553 {
554 u32 len_encoded = fls(q_len); /* log2(len) + 1 */
555
556 if (len_encoded == 16)
557 len_encoded = 0;
558 return len_encoded;
559 }
560
561 static int ocrdma_mbx_create_mq(struct ocrdma_dev *dev,
562 struct ocrdma_queue_info *mq,
563 struct ocrdma_queue_info *cq)
564 {
565 int num_pages, status;
566 struct ocrdma_create_mq_req *cmd = dev->mbx_cmd;
567 struct ocrdma_create_mq_rsp *rsp = dev->mbx_cmd;
568 struct ocrdma_pa *pa;
569
570 memset(cmd, 0, sizeof(*cmd));
571 num_pages = PAGES_4K_SPANNED(mq->va, mq->size);
572
573 ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_MQ_EXT,
574 OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
575 cmd->req.rsvd_version = 1;
576 cmd->cqid_pages = num_pages;
577 cmd->cqid_pages |= (cq->id << OCRDMA_CREATE_MQ_CQ_ID_SHIFT);
578 cmd->async_cqid_valid = OCRDMA_CREATE_MQ_ASYNC_CQ_VALID;
579
580 cmd->async_event_bitmap = BIT(OCRDMA_ASYNC_GRP5_EVE_CODE);
581 cmd->async_event_bitmap |= BIT(OCRDMA_ASYNC_RDMA_EVE_CODE);
582 /* Request link events on this MQ. */
583 cmd->async_event_bitmap |= BIT(OCRDMA_ASYNC_LINK_EVE_CODE);
584
585 cmd->async_cqid_ringsize = cq->id;
586 cmd->async_cqid_ringsize |= (ocrdma_encoded_q_len(mq->len) <<
587 OCRDMA_CREATE_MQ_RING_SIZE_SHIFT);
588 cmd->valid = OCRDMA_CREATE_MQ_VALID;
589 pa = &cmd->pa[0];
590
591 ocrdma_build_q_pages(pa, num_pages, mq->dma, PAGE_SIZE_4K);
592 status = be_roce_mcc_cmd(dev->nic_info.netdev,
593 cmd, sizeof(*cmd), NULL, NULL);
594 if (!status) {
595 mq->id = rsp->id;
596 mq->created = true;
597 }
598 return status;
599 }
600
601 static int ocrdma_create_mq(struct ocrdma_dev *dev)
602 {
603 int status;
604
605 /* Alloc completion queue for Mailbox queue */
606 status = ocrdma_alloc_q(dev, &dev->mq.cq, OCRDMA_MQ_CQ_LEN,
607 sizeof(struct ocrdma_mcqe));
608 if (status)
609 goto alloc_err;
610
611 dev->eq_tbl[0].cq_cnt++;
612 status = ocrdma_mbx_mq_cq_create(dev, &dev->mq.cq, &dev->eq_tbl[0].q);
613 if (status)
614 goto mbx_cq_free;
615
616 memset(&dev->mqe_ctx, 0, sizeof(dev->mqe_ctx));
617 init_waitqueue_head(&dev->mqe_ctx.cmd_wait);
618 mutex_init(&dev->mqe_ctx.lock);
619
620 /* Alloc Mailbox queue */
621 status = ocrdma_alloc_q(dev, &dev->mq.sq, OCRDMA_MQ_LEN,
622 sizeof(struct ocrdma_mqe));
623 if (status)
624 goto mbx_cq_destroy;
625 status = ocrdma_mbx_create_mq(dev, &dev->mq.sq, &dev->mq.cq);
626 if (status)
627 goto mbx_q_free;
628 ocrdma_ring_cq_db(dev, dev->mq.cq.id, true, false, 0);
629 return 0;
630
631 mbx_q_free:
632 ocrdma_free_q(dev, &dev->mq.sq);
633 mbx_cq_destroy:
634 ocrdma_mbx_delete_q(dev, &dev->mq.cq, QTYPE_CQ);
635 mbx_cq_free:
636 ocrdma_free_q(dev, &dev->mq.cq);
637 alloc_err:
638 return status;
639 }
640
641 static void ocrdma_destroy_mq(struct ocrdma_dev *dev)
642 {
643 struct ocrdma_queue_info *mbxq, *cq;
644
645 /* mqe_ctx lock synchronizes with any other pending cmds. */
646 mutex_lock(&dev->mqe_ctx.lock);
647 mbxq = &dev->mq.sq;
648 if (mbxq->created) {
649 ocrdma_mbx_delete_q(dev, mbxq, QTYPE_MCCQ);
650 ocrdma_free_q(dev, mbxq);
651 }
652 mutex_unlock(&dev->mqe_ctx.lock);
653
654 cq = &dev->mq.cq;
655 if (cq->created) {
656 ocrdma_mbx_delete_q(dev, cq, QTYPE_CQ);
657 ocrdma_free_q(dev, cq);
658 }
659 }
660
661 static void ocrdma_process_qpcat_error(struct ocrdma_dev *dev,
662 struct ocrdma_qp *qp)
663 {
664 enum ib_qp_state new_ib_qps = IB_QPS_ERR;
665 enum ib_qp_state old_ib_qps;
666
667 if (qp == NULL)
668 BUG();
669 ocrdma_qp_state_change(qp, new_ib_qps, &old_ib_qps);
670 }
671
672 static void ocrdma_dispatch_ibevent(struct ocrdma_dev *dev,
673 struct ocrdma_ae_mcqe *cqe)
674 {
675 struct ocrdma_qp *qp = NULL;
676 struct ocrdma_cq *cq = NULL;
677 struct ib_event ib_evt;
678 int cq_event = 0;
679 int qp_event = 1;
680 int srq_event = 0;
681 int dev_event = 0;
682 int type = (cqe->valid_ae_event & OCRDMA_AE_MCQE_EVENT_TYPE_MASK) >>
683 OCRDMA_AE_MCQE_EVENT_TYPE_SHIFT;
684 u16 qpid = cqe->qpvalid_qpid & OCRDMA_AE_MCQE_QPID_MASK;
685 u16 cqid = cqe->cqvalid_cqid & OCRDMA_AE_MCQE_CQID_MASK;
686
687 /*
688 * Some FW version returns wrong qp or cq ids in CQEs.
689 * Checking whether the IDs are valid
690 */
691
692 if (cqe->qpvalid_qpid & OCRDMA_AE_MCQE_QPVALID) {
693 if (qpid < dev->attr.max_qp)
694 qp = dev->qp_tbl[qpid];
695 if (qp == NULL) {
696 pr_err("ocrdma%d:Async event - qpid %u is not valid\n",
697 dev->id, qpid);
698 return;
699 }
700 }
701
702 if (cqe->cqvalid_cqid & OCRDMA_AE_MCQE_CQVALID) {
703 if (cqid < dev->attr.max_cq)
704 cq = dev->cq_tbl[cqid];
705 if (cq == NULL) {
706 pr_err("ocrdma%d:Async event - cqid %u is not valid\n",
707 dev->id, cqid);
708 return;
709 }
710 }
711
712 memset(&ib_evt, 0, sizeof(ib_evt));
713
714 ib_evt.device = &dev->ibdev;
715
716 switch (type) {
717 case OCRDMA_CQ_ERROR:
718 ib_evt.element.cq = &cq->ibcq;
719 ib_evt.event = IB_EVENT_CQ_ERR;
720 cq_event = 1;
721 qp_event = 0;
722 break;
723 case OCRDMA_CQ_OVERRUN_ERROR:
724 ib_evt.element.cq = &cq->ibcq;
725 ib_evt.event = IB_EVENT_CQ_ERR;
726 cq_event = 1;
727 qp_event = 0;
728 break;
729 case OCRDMA_CQ_QPCAT_ERROR:
730 ib_evt.element.qp = &qp->ibqp;
731 ib_evt.event = IB_EVENT_QP_FATAL;
732 ocrdma_process_qpcat_error(dev, qp);
733 break;
734 case OCRDMA_QP_ACCESS_ERROR:
735 ib_evt.element.qp = &qp->ibqp;
736 ib_evt.event = IB_EVENT_QP_ACCESS_ERR;
737 break;
738 case OCRDMA_QP_COMM_EST_EVENT:
739 ib_evt.element.qp = &qp->ibqp;
740 ib_evt.event = IB_EVENT_COMM_EST;
741 break;
742 case OCRDMA_SQ_DRAINED_EVENT:
743 ib_evt.element.qp = &qp->ibqp;
744 ib_evt.event = IB_EVENT_SQ_DRAINED;
745 break;
746 case OCRDMA_DEVICE_FATAL_EVENT:
747 ib_evt.element.port_num = 1;
748 ib_evt.event = IB_EVENT_DEVICE_FATAL;
749 qp_event = 0;
750 dev_event = 1;
751 break;
752 case OCRDMA_SRQCAT_ERROR:
753 ib_evt.element.srq = &qp->srq->ibsrq;
754 ib_evt.event = IB_EVENT_SRQ_ERR;
755 srq_event = 1;
756 qp_event = 0;
757 break;
758 case OCRDMA_SRQ_LIMIT_EVENT:
759 ib_evt.element.srq = &qp->srq->ibsrq;
760 ib_evt.event = IB_EVENT_SRQ_LIMIT_REACHED;
761 srq_event = 1;
762 qp_event = 0;
763 break;
764 case OCRDMA_QP_LAST_WQE_EVENT:
765 ib_evt.element.qp = &qp->ibqp;
766 ib_evt.event = IB_EVENT_QP_LAST_WQE_REACHED;
767 break;
768 default:
769 cq_event = 0;
770 qp_event = 0;
771 srq_event = 0;
772 dev_event = 0;
773 pr_err("%s() unknown type=0x%x\n", __func__, type);
774 break;
775 }
776
777 if (type < OCRDMA_MAX_ASYNC_ERRORS)
778 atomic_inc(&dev->async_err_stats[type]);
779
780 if (qp_event) {
781 if (qp->ibqp.event_handler)
782 qp->ibqp.event_handler(&ib_evt, qp->ibqp.qp_context);
783 } else if (cq_event) {
784 if (cq->ibcq.event_handler)
785 cq->ibcq.event_handler(&ib_evt, cq->ibcq.cq_context);
786 } else if (srq_event) {
787 if (qp->srq->ibsrq.event_handler)
788 qp->srq->ibsrq.event_handler(&ib_evt,
789 qp->srq->ibsrq.
790 srq_context);
791 } else if (dev_event) {
792 pr_err("%s: Fatal event received\n", dev->ibdev.name);
793 ib_dispatch_event(&ib_evt);
794 }
795
796 }
797
798 static void ocrdma_process_grp5_aync(struct ocrdma_dev *dev,
799 struct ocrdma_ae_mcqe *cqe)
800 {
801 struct ocrdma_ae_pvid_mcqe *evt;
802 int type = (cqe->valid_ae_event & OCRDMA_AE_MCQE_EVENT_TYPE_MASK) >>
803 OCRDMA_AE_MCQE_EVENT_TYPE_SHIFT;
804
805 switch (type) {
806 case OCRDMA_ASYNC_EVENT_PVID_STATE:
807 evt = (struct ocrdma_ae_pvid_mcqe *)cqe;
808 if ((evt->tag_enabled & OCRDMA_AE_PVID_MCQE_ENABLED_MASK) >>
809 OCRDMA_AE_PVID_MCQE_ENABLED_SHIFT)
810 dev->pvid = ((evt->tag_enabled &
811 OCRDMA_AE_PVID_MCQE_TAG_MASK) >>
812 OCRDMA_AE_PVID_MCQE_TAG_SHIFT);
813 break;
814
815 case OCRDMA_ASYNC_EVENT_COS_VALUE:
816 atomic_set(&dev->update_sl, 1);
817 break;
818 default:
819 /* Not interested evts. */
820 break;
821 }
822 }
823
824 static void ocrdma_process_link_state(struct ocrdma_dev *dev,
825 struct ocrdma_ae_mcqe *cqe)
826 {
827 struct ocrdma_ae_lnkst_mcqe *evt;
828 u8 lstate;
829
830 evt = (struct ocrdma_ae_lnkst_mcqe *)cqe;
831 lstate = ocrdma_get_ae_link_state(evt->speed_state_ptn);
832
833 if (!(lstate & OCRDMA_AE_LSC_LLINK_MASK))
834 return;
835
836 if (dev->flags & OCRDMA_FLAGS_LINK_STATUS_INIT)
837 ocrdma_update_link_state(dev, (lstate & OCRDMA_LINK_ST_MASK));
838 }
839
840 static void ocrdma_process_acqe(struct ocrdma_dev *dev, void *ae_cqe)
841 {
842 /* async CQE processing */
843 struct ocrdma_ae_mcqe *cqe = ae_cqe;
844 u32 evt_code = (cqe->valid_ae_event & OCRDMA_AE_MCQE_EVENT_CODE_MASK) >>
845 OCRDMA_AE_MCQE_EVENT_CODE_SHIFT;
846 switch (evt_code) {
847 case OCRDMA_ASYNC_LINK_EVE_CODE:
848 ocrdma_process_link_state(dev, cqe);
849 break;
850 case OCRDMA_ASYNC_RDMA_EVE_CODE:
851 ocrdma_dispatch_ibevent(dev, cqe);
852 break;
853 case OCRDMA_ASYNC_GRP5_EVE_CODE:
854 ocrdma_process_grp5_aync(dev, cqe);
855 break;
856 default:
857 pr_err("%s(%d) invalid evt code=0x%x\n", __func__,
858 dev->id, evt_code);
859 }
860 }
861
862 static void ocrdma_process_mcqe(struct ocrdma_dev *dev, struct ocrdma_mcqe *cqe)
863 {
864 if (dev->mqe_ctx.tag == cqe->tag_lo && dev->mqe_ctx.cmd_done == false) {
865 dev->mqe_ctx.cqe_status = (cqe->status &
866 OCRDMA_MCQE_STATUS_MASK) >> OCRDMA_MCQE_STATUS_SHIFT;
867 dev->mqe_ctx.ext_status =
868 (cqe->status & OCRDMA_MCQE_ESTATUS_MASK)
869 >> OCRDMA_MCQE_ESTATUS_SHIFT;
870 dev->mqe_ctx.cmd_done = true;
871 wake_up(&dev->mqe_ctx.cmd_wait);
872 } else
873 pr_err("%s() cqe for invalid tag0x%x.expected=0x%x\n",
874 __func__, cqe->tag_lo, dev->mqe_ctx.tag);
875 }
876
877 static int ocrdma_mq_cq_handler(struct ocrdma_dev *dev, u16 cq_id)
878 {
879 u16 cqe_popped = 0;
880 struct ocrdma_mcqe *cqe;
881
882 while (1) {
883 cqe = ocrdma_get_mcqe(dev);
884 if (cqe == NULL)
885 break;
886 ocrdma_le32_to_cpu(cqe, sizeof(*cqe));
887 cqe_popped += 1;
888 if (cqe->valid_ae_cmpl_cons & OCRDMA_MCQE_AE_MASK)
889 ocrdma_process_acqe(dev, cqe);
890 else if (cqe->valid_ae_cmpl_cons & OCRDMA_MCQE_CMPL_MASK)
891 ocrdma_process_mcqe(dev, cqe);
892 memset(cqe, 0, sizeof(struct ocrdma_mcqe));
893 ocrdma_mcq_inc_tail(dev);
894 }
895 ocrdma_ring_cq_db(dev, dev->mq.cq.id, true, false, cqe_popped);
896 return 0;
897 }
898
899 static struct ocrdma_cq *_ocrdma_qp_buddy_cq_handler(struct ocrdma_dev *dev,
900 struct ocrdma_cq *cq, bool sq)
901 {
902 struct ocrdma_qp *qp;
903 struct list_head *cur;
904 struct ocrdma_cq *bcq = NULL;
905 struct list_head *head = sq?(&cq->sq_head):(&cq->rq_head);
906
907 list_for_each(cur, head) {
908 if (sq)
909 qp = list_entry(cur, struct ocrdma_qp, sq_entry);
910 else
911 qp = list_entry(cur, struct ocrdma_qp, rq_entry);
912
913 if (qp->srq)
914 continue;
915 /* if wq and rq share the same cq, than comp_handler
916 * is already invoked.
917 */
918 if (qp->sq_cq == qp->rq_cq)
919 continue;
920 /* if completion came on sq, rq's cq is buddy cq.
921 * if completion came on rq, sq's cq is buddy cq.
922 */
923 if (qp->sq_cq == cq)
924 bcq = qp->rq_cq;
925 else
926 bcq = qp->sq_cq;
927 return bcq;
928 }
929 return NULL;
930 }
931
932 static void ocrdma_qp_buddy_cq_handler(struct ocrdma_dev *dev,
933 struct ocrdma_cq *cq)
934 {
935 unsigned long flags;
936 struct ocrdma_cq *bcq = NULL;
937
938 /* Go through list of QPs in error state which are using this CQ
939 * and invoke its callback handler to trigger CQE processing for
940 * error/flushed CQE. It is rare to find more than few entries in
941 * this list as most consumers stops after getting error CQE.
942 * List is traversed only once when a matching buddy cq found for a QP.
943 */
944 spin_lock_irqsave(&dev->flush_q_lock, flags);
945 /* Check if buddy CQ is present.
946 * true - Check for SQ CQ
947 * false - Check for RQ CQ
948 */
949 bcq = _ocrdma_qp_buddy_cq_handler(dev, cq, true);
950 if (bcq == NULL)
951 bcq = _ocrdma_qp_buddy_cq_handler(dev, cq, false);
952 spin_unlock_irqrestore(&dev->flush_q_lock, flags);
953
954 /* if there is valid buddy cq, look for its completion handler */
955 if (bcq && bcq->ibcq.comp_handler) {
956 spin_lock_irqsave(&bcq->comp_handler_lock, flags);
957 (*bcq->ibcq.comp_handler) (&bcq->ibcq, bcq->ibcq.cq_context);
958 spin_unlock_irqrestore(&bcq->comp_handler_lock, flags);
959 }
960 }
961
962 static void ocrdma_qp_cq_handler(struct ocrdma_dev *dev, u16 cq_idx)
963 {
964 unsigned long flags;
965 struct ocrdma_cq *cq;
966
967 if (cq_idx >= OCRDMA_MAX_CQ)
968 BUG();
969
970 cq = dev->cq_tbl[cq_idx];
971 if (cq == NULL)
972 return;
973
974 if (cq->ibcq.comp_handler) {
975 spin_lock_irqsave(&cq->comp_handler_lock, flags);
976 (*cq->ibcq.comp_handler) (&cq->ibcq, cq->ibcq.cq_context);
977 spin_unlock_irqrestore(&cq->comp_handler_lock, flags);
978 }
979 ocrdma_qp_buddy_cq_handler(dev, cq);
980 }
981
982 static void ocrdma_cq_handler(struct ocrdma_dev *dev, u16 cq_id)
983 {
984 /* process the MQ-CQE. */
985 if (cq_id == dev->mq.cq.id)
986 ocrdma_mq_cq_handler(dev, cq_id);
987 else
988 ocrdma_qp_cq_handler(dev, cq_id);
989 }
990
991 static irqreturn_t ocrdma_irq_handler(int irq, void *handle)
992 {
993 struct ocrdma_eq *eq = handle;
994 struct ocrdma_dev *dev = eq->dev;
995 struct ocrdma_eqe eqe;
996 struct ocrdma_eqe *ptr;
997 u16 cq_id;
998 u8 mcode;
999 int budget = eq->cq_cnt;
1000
1001 do {
1002 ptr = ocrdma_get_eqe(eq);
1003 eqe = *ptr;
1004 ocrdma_le32_to_cpu(&eqe, sizeof(eqe));
1005 mcode = (eqe.id_valid & OCRDMA_EQE_MAJOR_CODE_MASK)
1006 >> OCRDMA_EQE_MAJOR_CODE_SHIFT;
1007 if (mcode == OCRDMA_MAJOR_CODE_SENTINAL)
1008 pr_err("EQ full on eqid = 0x%x, eqe = 0x%x\n",
1009 eq->q.id, eqe.id_valid);
1010 if ((eqe.id_valid & OCRDMA_EQE_VALID_MASK) == 0)
1011 break;
1012
1013 ptr->id_valid = 0;
1014 /* ring eq doorbell as soon as its consumed. */
1015 ocrdma_ring_eq_db(dev, eq->q.id, false, true, 1);
1016 /* check whether its CQE or not. */
1017 if ((eqe.id_valid & OCRDMA_EQE_FOR_CQE_MASK) == 0) {
1018 cq_id = eqe.id_valid >> OCRDMA_EQE_RESOURCE_ID_SHIFT;
1019 ocrdma_cq_handler(dev, cq_id);
1020 }
1021 ocrdma_eq_inc_tail(eq);
1022
1023 /* There can be a stale EQE after the last bound CQ is
1024 * destroyed. EQE valid and budget == 0 implies this.
1025 */
1026 if (budget)
1027 budget--;
1028
1029 } while (budget);
1030
1031 eq->aic_obj.eq_intr_cnt++;
1032 ocrdma_ring_eq_db(dev, eq->q.id, true, true, 0);
1033 return IRQ_HANDLED;
1034 }
1035
1036 static void ocrdma_post_mqe(struct ocrdma_dev *dev, struct ocrdma_mqe *cmd)
1037 {
1038 struct ocrdma_mqe *mqe;
1039
1040 dev->mqe_ctx.tag = dev->mq.sq.head;
1041 dev->mqe_ctx.cmd_done = false;
1042 mqe = ocrdma_get_mqe(dev);
1043 cmd->hdr.tag_lo = dev->mq.sq.head;
1044 ocrdma_copy_cpu_to_le32(mqe, cmd, sizeof(*mqe));
1045 /* make sure descriptor is written before ringing doorbell */
1046 wmb();
1047 ocrdma_mq_inc_head(dev);
1048 ocrdma_ring_mq_db(dev);
1049 }
1050
1051 static int ocrdma_wait_mqe_cmpl(struct ocrdma_dev *dev)
1052 {
1053 long status;
1054 /* 30 sec timeout */
1055 status = wait_event_timeout(dev->mqe_ctx.cmd_wait,
1056 (dev->mqe_ctx.cmd_done != false),
1057 msecs_to_jiffies(30000));
1058 if (status)
1059 return 0;
1060 else {
1061 dev->mqe_ctx.fw_error_state = true;
1062 pr_err("%s(%d) mailbox timeout: fw not responding\n",
1063 __func__, dev->id);
1064 return -1;
1065 }
1066 }
1067
1068 /* issue a mailbox command on the MQ */
1069 static int ocrdma_mbx_cmd(struct ocrdma_dev *dev, struct ocrdma_mqe *mqe)
1070 {
1071 int status = 0;
1072 u16 cqe_status, ext_status;
1073 struct ocrdma_mqe *rsp_mqe;
1074 struct ocrdma_mbx_rsp *rsp = NULL;
1075
1076 mutex_lock(&dev->mqe_ctx.lock);
1077 if (dev->mqe_ctx.fw_error_state)
1078 goto mbx_err;
1079 ocrdma_post_mqe(dev, mqe);
1080 status = ocrdma_wait_mqe_cmpl(dev);
1081 if (status)
1082 goto mbx_err;
1083 cqe_status = dev->mqe_ctx.cqe_status;
1084 ext_status = dev->mqe_ctx.ext_status;
1085 rsp_mqe = ocrdma_get_mqe_rsp(dev);
1086 ocrdma_copy_le32_to_cpu(mqe, rsp_mqe, (sizeof(*mqe)));
1087 if ((mqe->hdr.spcl_sge_cnt_emb & OCRDMA_MQE_HDR_EMB_MASK) >>
1088 OCRDMA_MQE_HDR_EMB_SHIFT)
1089 rsp = &mqe->u.rsp;
1090
1091 if (cqe_status || ext_status) {
1092 pr_err("%s() cqe_status=0x%x, ext_status=0x%x,",
1093 __func__, cqe_status, ext_status);
1094 if (rsp) {
1095 /* This is for embedded cmds. */
1096 pr_err("opcode=0x%x, subsystem=0x%x\n",
1097 (rsp->subsys_op & OCRDMA_MBX_RSP_OPCODE_MASK) >>
1098 OCRDMA_MBX_RSP_OPCODE_SHIFT,
1099 (rsp->subsys_op & OCRDMA_MBX_RSP_SUBSYS_MASK) >>
1100 OCRDMA_MBX_RSP_SUBSYS_SHIFT);
1101 }
1102 status = ocrdma_get_mbx_cqe_errno(cqe_status);
1103 goto mbx_err;
1104 }
1105 /* For non embedded, rsp errors are handled in ocrdma_nonemb_mbx_cmd */
1106 if (rsp && (mqe->u.rsp.status & OCRDMA_MBX_RSP_STATUS_MASK))
1107 status = ocrdma_get_mbx_errno(mqe->u.rsp.status);
1108 mbx_err:
1109 mutex_unlock(&dev->mqe_ctx.lock);
1110 return status;
1111 }
1112
1113 static int ocrdma_nonemb_mbx_cmd(struct ocrdma_dev *dev, struct ocrdma_mqe *mqe,
1114 void *payload_va)
1115 {
1116 int status;
1117 struct ocrdma_mbx_rsp *rsp = payload_va;
1118
1119 if ((mqe->hdr.spcl_sge_cnt_emb & OCRDMA_MQE_HDR_EMB_MASK) >>
1120 OCRDMA_MQE_HDR_EMB_SHIFT)
1121 BUG();
1122
1123 status = ocrdma_mbx_cmd(dev, mqe);
1124 if (!status)
1125 /* For non embedded, only CQE failures are handled in
1126 * ocrdma_mbx_cmd. We need to check for RSP errors.
1127 */
1128 if (rsp->status & OCRDMA_MBX_RSP_STATUS_MASK)
1129 status = ocrdma_get_mbx_errno(rsp->status);
1130
1131 if (status)
1132 pr_err("opcode=0x%x, subsystem=0x%x\n",
1133 (rsp->subsys_op & OCRDMA_MBX_RSP_OPCODE_MASK) >>
1134 OCRDMA_MBX_RSP_OPCODE_SHIFT,
1135 (rsp->subsys_op & OCRDMA_MBX_RSP_SUBSYS_MASK) >>
1136 OCRDMA_MBX_RSP_SUBSYS_SHIFT);
1137 return status;
1138 }
1139
1140 static void ocrdma_get_attr(struct ocrdma_dev *dev,
1141 struct ocrdma_dev_attr *attr,
1142 struct ocrdma_mbx_query_config *rsp)
1143 {
1144 attr->max_pd =
1145 (rsp->max_pd_ca_ack_delay & OCRDMA_MBX_QUERY_CFG_MAX_PD_MASK) >>
1146 OCRDMA_MBX_QUERY_CFG_MAX_PD_SHIFT;
1147 attr->udp_encap = (rsp->max_pd_ca_ack_delay &
1148 OCRDMA_MBX_QUERY_CFG_L3_TYPE_MASK) >>
1149 OCRDMA_MBX_QUERY_CFG_L3_TYPE_SHIFT;
1150 attr->max_dpp_pds =
1151 (rsp->max_dpp_pds_credits & OCRDMA_MBX_QUERY_CFG_MAX_DPP_PDS_MASK) >>
1152 OCRDMA_MBX_QUERY_CFG_MAX_DPP_PDS_OFFSET;
1153 attr->max_qp =
1154 (rsp->qp_srq_cq_ird_ord & OCRDMA_MBX_QUERY_CFG_MAX_QP_MASK) >>
1155 OCRDMA_MBX_QUERY_CFG_MAX_QP_SHIFT;
1156 attr->max_srq =
1157 (rsp->max_srq_rpir_qps & OCRDMA_MBX_QUERY_CFG_MAX_SRQ_MASK) >>
1158 OCRDMA_MBX_QUERY_CFG_MAX_SRQ_OFFSET;
1159 attr->max_send_sge = ((rsp->max_recv_send_sge &
1160 OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_MASK) >>
1161 OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_SHIFT);
1162 attr->max_recv_sge = (rsp->max_recv_send_sge &
1163 OCRDMA_MBX_QUERY_CFG_MAX_RECV_SGE_MASK) >>
1164 OCRDMA_MBX_QUERY_CFG_MAX_RECV_SGE_SHIFT;
1165 attr->max_srq_sge = (rsp->max_srq_rqe_sge &
1166 OCRDMA_MBX_QUERY_CFG_MAX_SRQ_SGE_MASK) >>
1167 OCRDMA_MBX_QUERY_CFG_MAX_SRQ_SGE_OFFSET;
1168 attr->max_rdma_sge = (rsp->max_wr_rd_sge &
1169 OCRDMA_MBX_QUERY_CFG_MAX_RD_SGE_MASK) >>
1170 OCRDMA_MBX_QUERY_CFG_MAX_RD_SGE_SHIFT;
1171 attr->max_ord_per_qp = (rsp->max_ird_ord_per_qp &
1172 OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_MASK) >>
1173 OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_SHIFT;
1174 attr->max_ird_per_qp = (rsp->max_ird_ord_per_qp &
1175 OCRDMA_MBX_QUERY_CFG_MAX_IRD_PER_QP_MASK) >>
1176 OCRDMA_MBX_QUERY_CFG_MAX_IRD_PER_QP_SHIFT;
1177 attr->cq_overflow_detect = (rsp->qp_srq_cq_ird_ord &
1178 OCRDMA_MBX_QUERY_CFG_CQ_OVERFLOW_MASK) >>
1179 OCRDMA_MBX_QUERY_CFG_CQ_OVERFLOW_SHIFT;
1180 attr->srq_supported = (rsp->qp_srq_cq_ird_ord &
1181 OCRDMA_MBX_QUERY_CFG_SRQ_SUPPORTED_MASK) >>
1182 OCRDMA_MBX_QUERY_CFG_SRQ_SUPPORTED_SHIFT;
1183 attr->local_ca_ack_delay = (rsp->max_pd_ca_ack_delay &
1184 OCRDMA_MBX_QUERY_CFG_CA_ACK_DELAY_MASK) >>
1185 OCRDMA_MBX_QUERY_CFG_CA_ACK_DELAY_SHIFT;
1186 attr->max_mw = rsp->max_mw;
1187 attr->max_mr = rsp->max_mr;
1188 attr->max_mr_size = ((u64)rsp->max_mr_size_hi << 32) |
1189 rsp->max_mr_size_lo;
1190 attr->max_fmr = 0;
1191 attr->max_pages_per_frmr = rsp->max_pages_per_frmr;
1192 attr->max_num_mr_pbl = rsp->max_num_mr_pbl;
1193 attr->max_cqe = rsp->max_cq_cqes_per_cq &
1194 OCRDMA_MBX_QUERY_CFG_MAX_CQES_PER_CQ_MASK;
1195 attr->max_cq = (rsp->max_cq_cqes_per_cq &
1196 OCRDMA_MBX_QUERY_CFG_MAX_CQ_MASK) >>
1197 OCRDMA_MBX_QUERY_CFG_MAX_CQ_OFFSET;
1198 attr->wqe_size = ((rsp->wqe_rqe_stride_max_dpp_cqs &
1199 OCRDMA_MBX_QUERY_CFG_MAX_WQE_SIZE_MASK) >>
1200 OCRDMA_MBX_QUERY_CFG_MAX_WQE_SIZE_OFFSET) *
1201 OCRDMA_WQE_STRIDE;
1202 attr->rqe_size = ((rsp->wqe_rqe_stride_max_dpp_cqs &
1203 OCRDMA_MBX_QUERY_CFG_MAX_RQE_SIZE_MASK) >>
1204 OCRDMA_MBX_QUERY_CFG_MAX_RQE_SIZE_OFFSET) *
1205 OCRDMA_WQE_STRIDE;
1206 attr->max_inline_data =
1207 attr->wqe_size - (sizeof(struct ocrdma_hdr_wqe) +
1208 sizeof(struct ocrdma_sge));
1209 if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) {
1210 attr->ird = 1;
1211 attr->ird_page_size = OCRDMA_MIN_Q_PAGE_SIZE;
1212 attr->num_ird_pages = MAX_OCRDMA_IRD_PAGES;
1213 }
1214 dev->attr.max_wqe = rsp->max_wqes_rqes_per_q >>
1215 OCRDMA_MBX_QUERY_CFG_MAX_WQES_PER_WQ_OFFSET;
1216 dev->attr.max_rqe = rsp->max_wqes_rqes_per_q &
1217 OCRDMA_MBX_QUERY_CFG_MAX_RQES_PER_RQ_MASK;
1218 }
1219
1220 static int ocrdma_check_fw_config(struct ocrdma_dev *dev,
1221 struct ocrdma_fw_conf_rsp *conf)
1222 {
1223 u32 fn_mode;
1224
1225 fn_mode = conf->fn_mode & OCRDMA_FN_MODE_RDMA;
1226 if (fn_mode != OCRDMA_FN_MODE_RDMA)
1227 return -EINVAL;
1228 dev->base_eqid = conf->base_eqid;
1229 dev->max_eq = conf->max_eq;
1230 return 0;
1231 }
1232
1233 /* can be issued only during init time. */
1234 static int ocrdma_mbx_query_fw_ver(struct ocrdma_dev *dev)
1235 {
1236 int status = -ENOMEM;
1237 struct ocrdma_mqe *cmd;
1238 struct ocrdma_fw_ver_rsp *rsp;
1239
1240 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_GET_FW_VER, sizeof(*cmd));
1241 if (!cmd)
1242 return -ENOMEM;
1243 ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0],
1244 OCRDMA_CMD_GET_FW_VER,
1245 OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1246
1247 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1248 if (status)
1249 goto mbx_err;
1250 rsp = (struct ocrdma_fw_ver_rsp *)cmd;
1251 memset(&dev->attr.fw_ver[0], 0, sizeof(dev->attr.fw_ver));
1252 memcpy(&dev->attr.fw_ver[0], &rsp->running_ver[0],
1253 sizeof(rsp->running_ver));
1254 ocrdma_le32_to_cpu(dev->attr.fw_ver, sizeof(rsp->running_ver));
1255 mbx_err:
1256 kfree(cmd);
1257 return status;
1258 }
1259
1260 /* can be issued only during init time. */
1261 static int ocrdma_mbx_query_fw_config(struct ocrdma_dev *dev)
1262 {
1263 int status = -ENOMEM;
1264 struct ocrdma_mqe *cmd;
1265 struct ocrdma_fw_conf_rsp *rsp;
1266
1267 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_GET_FW_CONFIG, sizeof(*cmd));
1268 if (!cmd)
1269 return -ENOMEM;
1270 ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0],
1271 OCRDMA_CMD_GET_FW_CONFIG,
1272 OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1273 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1274 if (status)
1275 goto mbx_err;
1276 rsp = (struct ocrdma_fw_conf_rsp *)cmd;
1277 status = ocrdma_check_fw_config(dev, rsp);
1278 mbx_err:
1279 kfree(cmd);
1280 return status;
1281 }
1282
1283 int ocrdma_mbx_rdma_stats(struct ocrdma_dev *dev, bool reset)
1284 {
1285 struct ocrdma_rdma_stats_req *req = dev->stats_mem.va;
1286 struct ocrdma_mqe *mqe = &dev->stats_mem.mqe;
1287 struct ocrdma_rdma_stats_resp *old_stats;
1288 int status;
1289
1290 old_stats = kmalloc(sizeof(*old_stats), GFP_KERNEL);
1291 if (old_stats == NULL)
1292 return -ENOMEM;
1293
1294 memset(mqe, 0, sizeof(*mqe));
1295 mqe->hdr.pyld_len = dev->stats_mem.size;
1296 mqe->hdr.spcl_sge_cnt_emb |=
1297 (1 << OCRDMA_MQE_HDR_SGE_CNT_SHIFT) &
1298 OCRDMA_MQE_HDR_SGE_CNT_MASK;
1299 mqe->u.nonemb_req.sge[0].pa_lo = (u32) (dev->stats_mem.pa & 0xffffffff);
1300 mqe->u.nonemb_req.sge[0].pa_hi = (u32) upper_32_bits(dev->stats_mem.pa);
1301 mqe->u.nonemb_req.sge[0].len = dev->stats_mem.size;
1302
1303 /* Cache the old stats */
1304 memcpy(old_stats, req, sizeof(struct ocrdma_rdma_stats_resp));
1305 memset(req, 0, dev->stats_mem.size);
1306
1307 ocrdma_init_mch((struct ocrdma_mbx_hdr *)req,
1308 OCRDMA_CMD_GET_RDMA_STATS,
1309 OCRDMA_SUBSYS_ROCE,
1310 dev->stats_mem.size);
1311 if (reset)
1312 req->reset_stats = reset;
1313
1314 status = ocrdma_nonemb_mbx_cmd(dev, mqe, dev->stats_mem.va);
1315 if (status)
1316 /* Copy from cache, if mbox fails */
1317 memcpy(req, old_stats, sizeof(struct ocrdma_rdma_stats_resp));
1318 else
1319 ocrdma_le32_to_cpu(req, dev->stats_mem.size);
1320
1321 kfree(old_stats);
1322 return status;
1323 }
1324
1325 static int ocrdma_mbx_get_ctrl_attribs(struct ocrdma_dev *dev)
1326 {
1327 int status = -ENOMEM;
1328 struct ocrdma_dma_mem dma;
1329 struct ocrdma_mqe *mqe;
1330 struct ocrdma_get_ctrl_attribs_rsp *ctrl_attr_rsp;
1331 struct mgmt_hba_attribs *hba_attribs;
1332
1333 mqe = kzalloc(sizeof(struct ocrdma_mqe), GFP_KERNEL);
1334 if (!mqe)
1335 return status;
1336
1337 dma.size = sizeof(struct ocrdma_get_ctrl_attribs_rsp);
1338 dma.va = dma_alloc_coherent(&dev->nic_info.pdev->dev,
1339 dma.size, &dma.pa, GFP_KERNEL);
1340 if (!dma.va)
1341 goto free_mqe;
1342
1343 mqe->hdr.pyld_len = dma.size;
1344 mqe->hdr.spcl_sge_cnt_emb |=
1345 (1 << OCRDMA_MQE_HDR_SGE_CNT_SHIFT) &
1346 OCRDMA_MQE_HDR_SGE_CNT_MASK;
1347 mqe->u.nonemb_req.sge[0].pa_lo = (u32) (dma.pa & 0xffffffff);
1348 mqe->u.nonemb_req.sge[0].pa_hi = (u32) upper_32_bits(dma.pa);
1349 mqe->u.nonemb_req.sge[0].len = dma.size;
1350
1351 memset(dma.va, 0, dma.size);
1352 ocrdma_init_mch((struct ocrdma_mbx_hdr *)dma.va,
1353 OCRDMA_CMD_GET_CTRL_ATTRIBUTES,
1354 OCRDMA_SUBSYS_COMMON,
1355 dma.size);
1356
1357 status = ocrdma_nonemb_mbx_cmd(dev, mqe, dma.va);
1358 if (!status) {
1359 ctrl_attr_rsp = (struct ocrdma_get_ctrl_attribs_rsp *)dma.va;
1360 hba_attribs = &ctrl_attr_rsp->ctrl_attribs.hba_attribs;
1361
1362 dev->hba_port_num = (hba_attribs->ptpnum_maxdoms_hbast_cv &
1363 OCRDMA_HBA_ATTRB_PTNUM_MASK)
1364 >> OCRDMA_HBA_ATTRB_PTNUM_SHIFT;
1365 strncpy(dev->model_number,
1366 hba_attribs->controller_model_number, 31);
1367 }
1368 dma_free_coherent(&dev->nic_info.pdev->dev, dma.size, dma.va, dma.pa);
1369 free_mqe:
1370 kfree(mqe);
1371 return status;
1372 }
1373
1374 static int ocrdma_mbx_query_dev(struct ocrdma_dev *dev)
1375 {
1376 int status = -ENOMEM;
1377 struct ocrdma_mbx_query_config *rsp;
1378 struct ocrdma_mqe *cmd;
1379
1380 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_CONFIG, sizeof(*cmd));
1381 if (!cmd)
1382 return status;
1383 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1384 if (status)
1385 goto mbx_err;
1386 rsp = (struct ocrdma_mbx_query_config *)cmd;
1387 ocrdma_get_attr(dev, &dev->attr, rsp);
1388 mbx_err:
1389 kfree(cmd);
1390 return status;
1391 }
1392
1393 int ocrdma_mbx_get_link_speed(struct ocrdma_dev *dev, u8 *lnk_speed,
1394 u8 *lnk_state)
1395 {
1396 int status = -ENOMEM;
1397 struct ocrdma_get_link_speed_rsp *rsp;
1398 struct ocrdma_mqe *cmd;
1399
1400 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_NTWK_LINK_CONFIG_V1,
1401 sizeof(*cmd));
1402 if (!cmd)
1403 return status;
1404 ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0],
1405 OCRDMA_CMD_QUERY_NTWK_LINK_CONFIG_V1,
1406 OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1407
1408 ((struct ocrdma_mbx_hdr *)cmd->u.cmd)->rsvd_version = 0x1;
1409
1410 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1411 if (status)
1412 goto mbx_err;
1413
1414 rsp = (struct ocrdma_get_link_speed_rsp *)cmd;
1415 if (lnk_speed)
1416 *lnk_speed = (rsp->pflt_pps_ld_pnum & OCRDMA_PHY_PS_MASK)
1417 >> OCRDMA_PHY_PS_SHIFT;
1418 if (lnk_state)
1419 *lnk_state = (rsp->res_lnk_st & OCRDMA_LINK_ST_MASK);
1420
1421 mbx_err:
1422 kfree(cmd);
1423 return status;
1424 }
1425
1426 static int ocrdma_mbx_get_phy_info(struct ocrdma_dev *dev)
1427 {
1428 int status = -ENOMEM;
1429 struct ocrdma_mqe *cmd;
1430 struct ocrdma_get_phy_info_rsp *rsp;
1431
1432 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_PHY_DETAILS, sizeof(*cmd));
1433 if (!cmd)
1434 return status;
1435
1436 ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0],
1437 OCRDMA_CMD_PHY_DETAILS, OCRDMA_SUBSYS_COMMON,
1438 sizeof(*cmd));
1439
1440 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1441 if (status)
1442 goto mbx_err;
1443
1444 rsp = (struct ocrdma_get_phy_info_rsp *)cmd;
1445 dev->phy.phy_type =
1446 (rsp->ityp_ptyp & OCRDMA_PHY_TYPE_MASK);
1447 dev->phy.interface_type =
1448 (rsp->ityp_ptyp & OCRDMA_IF_TYPE_MASK)
1449 >> OCRDMA_IF_TYPE_SHIFT;
1450 dev->phy.auto_speeds_supported =
1451 (rsp->fspeed_aspeed & OCRDMA_ASPEED_SUPP_MASK);
1452 dev->phy.fixed_speeds_supported =
1453 (rsp->fspeed_aspeed & OCRDMA_FSPEED_SUPP_MASK)
1454 >> OCRDMA_FSPEED_SUPP_SHIFT;
1455 mbx_err:
1456 kfree(cmd);
1457 return status;
1458 }
1459
1460 int ocrdma_mbx_alloc_pd(struct ocrdma_dev *dev, struct ocrdma_pd *pd)
1461 {
1462 int status = -ENOMEM;
1463 struct ocrdma_alloc_pd *cmd;
1464 struct ocrdma_alloc_pd_rsp *rsp;
1465
1466 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_PD, sizeof(*cmd));
1467 if (!cmd)
1468 return status;
1469 if (pd->dpp_enabled)
1470 cmd->enable_dpp_rsvd |= OCRDMA_ALLOC_PD_ENABLE_DPP;
1471 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1472 if (status)
1473 goto mbx_err;
1474 rsp = (struct ocrdma_alloc_pd_rsp *)cmd;
1475 pd->id = rsp->dpp_page_pdid & OCRDMA_ALLOC_PD_RSP_PDID_MASK;
1476 if (rsp->dpp_page_pdid & OCRDMA_ALLOC_PD_RSP_DPP) {
1477 pd->dpp_enabled = true;
1478 pd->dpp_page = rsp->dpp_page_pdid >>
1479 OCRDMA_ALLOC_PD_RSP_DPP_PAGE_SHIFT;
1480 } else {
1481 pd->dpp_enabled = false;
1482 pd->num_dpp_qp = 0;
1483 }
1484 mbx_err:
1485 kfree(cmd);
1486 return status;
1487 }
1488
1489 int ocrdma_mbx_dealloc_pd(struct ocrdma_dev *dev, struct ocrdma_pd *pd)
1490 {
1491 int status = -ENOMEM;
1492 struct ocrdma_dealloc_pd *cmd;
1493
1494 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_PD, sizeof(*cmd));
1495 if (!cmd)
1496 return status;
1497 cmd->id = pd->id;
1498 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1499 kfree(cmd);
1500 return status;
1501 }
1502
1503
1504 static int ocrdma_mbx_alloc_pd_range(struct ocrdma_dev *dev)
1505 {
1506 int status = -ENOMEM;
1507 size_t pd_bitmap_size;
1508 struct ocrdma_alloc_pd_range *cmd;
1509 struct ocrdma_alloc_pd_range_rsp *rsp;
1510
1511 /* Pre allocate the DPP PDs */
1512 if (dev->attr.max_dpp_pds) {
1513 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_PD_RANGE,
1514 sizeof(*cmd));
1515 if (!cmd)
1516 return -ENOMEM;
1517 cmd->pd_count = dev->attr.max_dpp_pds;
1518 cmd->enable_dpp_rsvd |= OCRDMA_ALLOC_PD_ENABLE_DPP;
1519 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1520 rsp = (struct ocrdma_alloc_pd_range_rsp *)cmd;
1521
1522 if (!status && (rsp->dpp_page_pdid & OCRDMA_ALLOC_PD_RSP_DPP) &&
1523 rsp->pd_count) {
1524 dev->pd_mgr->dpp_page_index = rsp->dpp_page_pdid >>
1525 OCRDMA_ALLOC_PD_RSP_DPP_PAGE_SHIFT;
1526 dev->pd_mgr->pd_dpp_start = rsp->dpp_page_pdid &
1527 OCRDMA_ALLOC_PD_RNG_RSP_START_PDID_MASK;
1528 dev->pd_mgr->max_dpp_pd = rsp->pd_count;
1529 pd_bitmap_size =
1530 BITS_TO_LONGS(rsp->pd_count) * sizeof(long);
1531 dev->pd_mgr->pd_dpp_bitmap = kzalloc(pd_bitmap_size,
1532 GFP_KERNEL);
1533 }
1534 kfree(cmd);
1535 }
1536
1537 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_PD_RANGE, sizeof(*cmd));
1538 if (!cmd)
1539 return -ENOMEM;
1540
1541 cmd->pd_count = dev->attr.max_pd - dev->attr.max_dpp_pds;
1542 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1543 rsp = (struct ocrdma_alloc_pd_range_rsp *)cmd;
1544 if (!status && rsp->pd_count) {
1545 dev->pd_mgr->pd_norm_start = rsp->dpp_page_pdid &
1546 OCRDMA_ALLOC_PD_RNG_RSP_START_PDID_MASK;
1547 dev->pd_mgr->max_normal_pd = rsp->pd_count;
1548 pd_bitmap_size = BITS_TO_LONGS(rsp->pd_count) * sizeof(long);
1549 dev->pd_mgr->pd_norm_bitmap = kzalloc(pd_bitmap_size,
1550 GFP_KERNEL);
1551 }
1552 kfree(cmd);
1553
1554 if (dev->pd_mgr->pd_norm_bitmap || dev->pd_mgr->pd_dpp_bitmap) {
1555 /* Enable PD resource manager */
1556 dev->pd_mgr->pd_prealloc_valid = true;
1557 return 0;
1558 }
1559 return status;
1560 }
1561
1562 static void ocrdma_mbx_dealloc_pd_range(struct ocrdma_dev *dev)
1563 {
1564 struct ocrdma_dealloc_pd_range *cmd;
1565
1566 /* return normal PDs to firmware */
1567 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_PD_RANGE, sizeof(*cmd));
1568 if (!cmd)
1569 goto mbx_err;
1570
1571 if (dev->pd_mgr->max_normal_pd) {
1572 cmd->start_pd_id = dev->pd_mgr->pd_norm_start;
1573 cmd->pd_count = dev->pd_mgr->max_normal_pd;
1574 ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1575 }
1576
1577 if (dev->pd_mgr->max_dpp_pd) {
1578 kfree(cmd);
1579 /* return DPP PDs to firmware */
1580 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_PD_RANGE,
1581 sizeof(*cmd));
1582 if (!cmd)
1583 goto mbx_err;
1584
1585 cmd->start_pd_id = dev->pd_mgr->pd_dpp_start;
1586 cmd->pd_count = dev->pd_mgr->max_dpp_pd;
1587 ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1588 }
1589 mbx_err:
1590 kfree(cmd);
1591 }
1592
1593 void ocrdma_alloc_pd_pool(struct ocrdma_dev *dev)
1594 {
1595 int status;
1596
1597 dev->pd_mgr = kzalloc(sizeof(struct ocrdma_pd_resource_mgr),
1598 GFP_KERNEL);
1599 if (!dev->pd_mgr) {
1600 pr_err("%s(%d)Memory allocation failure.\n", __func__, dev->id);
1601 return;
1602 }
1603 status = ocrdma_mbx_alloc_pd_range(dev);
1604 if (status) {
1605 pr_err("%s(%d) Unable to initialize PD pool, using default.\n",
1606 __func__, dev->id);
1607 }
1608 }
1609
1610 static void ocrdma_free_pd_pool(struct ocrdma_dev *dev)
1611 {
1612 ocrdma_mbx_dealloc_pd_range(dev);
1613 kfree(dev->pd_mgr->pd_norm_bitmap);
1614 kfree(dev->pd_mgr->pd_dpp_bitmap);
1615 kfree(dev->pd_mgr);
1616 }
1617
1618 static int ocrdma_build_q_conf(u32 *num_entries, int entry_size,
1619 int *num_pages, int *page_size)
1620 {
1621 int i;
1622 int mem_size;
1623
1624 *num_entries = roundup_pow_of_two(*num_entries);
1625 mem_size = *num_entries * entry_size;
1626 /* find the possible lowest possible multiplier */
1627 for (i = 0; i < OCRDMA_MAX_Q_PAGE_SIZE_CNT; i++) {
1628 if (mem_size <= (OCRDMA_Q_PAGE_BASE_SIZE << i))
1629 break;
1630 }
1631 if (i >= OCRDMA_MAX_Q_PAGE_SIZE_CNT)
1632 return -EINVAL;
1633 mem_size = roundup(mem_size,
1634 ((OCRDMA_Q_PAGE_BASE_SIZE << i) / OCRDMA_MAX_Q_PAGES));
1635 *num_pages =
1636 mem_size / ((OCRDMA_Q_PAGE_BASE_SIZE << i) / OCRDMA_MAX_Q_PAGES);
1637 *page_size = ((OCRDMA_Q_PAGE_BASE_SIZE << i) / OCRDMA_MAX_Q_PAGES);
1638 *num_entries = mem_size / entry_size;
1639 return 0;
1640 }
1641
1642 static int ocrdma_mbx_create_ah_tbl(struct ocrdma_dev *dev)
1643 {
1644 int i;
1645 int status = 0;
1646 int max_ah;
1647 struct ocrdma_create_ah_tbl *cmd;
1648 struct ocrdma_create_ah_tbl_rsp *rsp;
1649 struct pci_dev *pdev = dev->nic_info.pdev;
1650 dma_addr_t pa;
1651 struct ocrdma_pbe *pbes;
1652
1653 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_AH_TBL, sizeof(*cmd));
1654 if (!cmd)
1655 return status;
1656
1657 max_ah = OCRDMA_MAX_AH;
1658 dev->av_tbl.size = sizeof(struct ocrdma_av) * max_ah;
1659
1660 /* number of PBEs in PBL */
1661 cmd->ah_conf = (OCRDMA_AH_TBL_PAGES <<
1662 OCRDMA_CREATE_AH_NUM_PAGES_SHIFT) &
1663 OCRDMA_CREATE_AH_NUM_PAGES_MASK;
1664
1665 /* page size */
1666 for (i = 0; i < OCRDMA_MAX_Q_PAGE_SIZE_CNT; i++) {
1667 if (PAGE_SIZE == (OCRDMA_MIN_Q_PAGE_SIZE << i))
1668 break;
1669 }
1670 cmd->ah_conf |= (i << OCRDMA_CREATE_AH_PAGE_SIZE_SHIFT) &
1671 OCRDMA_CREATE_AH_PAGE_SIZE_MASK;
1672
1673 /* ah_entry size */
1674 cmd->ah_conf |= (sizeof(struct ocrdma_av) <<
1675 OCRDMA_CREATE_AH_ENTRY_SIZE_SHIFT) &
1676 OCRDMA_CREATE_AH_ENTRY_SIZE_MASK;
1677
1678 dev->av_tbl.pbl.va = dma_alloc_coherent(&pdev->dev, PAGE_SIZE,
1679 &dev->av_tbl.pbl.pa,
1680 GFP_KERNEL);
1681 if (dev->av_tbl.pbl.va == NULL)
1682 goto mem_err;
1683
1684 dev->av_tbl.va = dma_alloc_coherent(&pdev->dev, dev->av_tbl.size,
1685 &pa, GFP_KERNEL);
1686 if (dev->av_tbl.va == NULL)
1687 goto mem_err_ah;
1688 dev->av_tbl.pa = pa;
1689 dev->av_tbl.num_ah = max_ah;
1690 memset(dev->av_tbl.va, 0, dev->av_tbl.size);
1691
1692 pbes = (struct ocrdma_pbe *)dev->av_tbl.pbl.va;
1693 for (i = 0; i < dev->av_tbl.size / OCRDMA_MIN_Q_PAGE_SIZE; i++) {
1694 pbes[i].pa_lo = (u32)cpu_to_le32(pa & 0xffffffff);
1695 pbes[i].pa_hi = (u32)cpu_to_le32(upper_32_bits(pa));
1696 pa += PAGE_SIZE;
1697 }
1698 cmd->tbl_addr[0].lo = (u32)(dev->av_tbl.pbl.pa & 0xFFFFFFFF);
1699 cmd->tbl_addr[0].hi = (u32)upper_32_bits(dev->av_tbl.pbl.pa);
1700 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1701 if (status)
1702 goto mbx_err;
1703 rsp = (struct ocrdma_create_ah_tbl_rsp *)cmd;
1704 dev->av_tbl.ahid = rsp->ahid & 0xFFFF;
1705 kfree(cmd);
1706 return 0;
1707
1708 mbx_err:
1709 dma_free_coherent(&pdev->dev, dev->av_tbl.size, dev->av_tbl.va,
1710 dev->av_tbl.pa);
1711 dev->av_tbl.va = NULL;
1712 mem_err_ah:
1713 dma_free_coherent(&pdev->dev, PAGE_SIZE, dev->av_tbl.pbl.va,
1714 dev->av_tbl.pbl.pa);
1715 dev->av_tbl.pbl.va = NULL;
1716 dev->av_tbl.size = 0;
1717 mem_err:
1718 kfree(cmd);
1719 return status;
1720 }
1721
1722 static void ocrdma_mbx_delete_ah_tbl(struct ocrdma_dev *dev)
1723 {
1724 struct ocrdma_delete_ah_tbl *cmd;
1725 struct pci_dev *pdev = dev->nic_info.pdev;
1726
1727 if (dev->av_tbl.va == NULL)
1728 return;
1729
1730 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_AH_TBL, sizeof(*cmd));
1731 if (!cmd)
1732 return;
1733 cmd->ahid = dev->av_tbl.ahid;
1734
1735 ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1736 dma_free_coherent(&pdev->dev, dev->av_tbl.size, dev->av_tbl.va,
1737 dev->av_tbl.pa);
1738 dev->av_tbl.va = NULL;
1739 dma_free_coherent(&pdev->dev, PAGE_SIZE, dev->av_tbl.pbl.va,
1740 dev->av_tbl.pbl.pa);
1741 kfree(cmd);
1742 }
1743
1744 /* Multiple CQs uses the EQ. This routine returns least used
1745 * EQ to associate with CQ. This will distributes the interrupt
1746 * processing and CPU load to associated EQ, vector and so to that CPU.
1747 */
1748 static u16 ocrdma_bind_eq(struct ocrdma_dev *dev)
1749 {
1750 int i, selected_eq = 0, cq_cnt = 0;
1751 u16 eq_id;
1752
1753 mutex_lock(&dev->dev_lock);
1754 cq_cnt = dev->eq_tbl[0].cq_cnt;
1755 eq_id = dev->eq_tbl[0].q.id;
1756 /* find the EQ which is has the least number of
1757 * CQs associated with it.
1758 */
1759 for (i = 0; i < dev->eq_cnt; i++) {
1760 if (dev->eq_tbl[i].cq_cnt < cq_cnt) {
1761 cq_cnt = dev->eq_tbl[i].cq_cnt;
1762 eq_id = dev->eq_tbl[i].q.id;
1763 selected_eq = i;
1764 }
1765 }
1766 dev->eq_tbl[selected_eq].cq_cnt += 1;
1767 mutex_unlock(&dev->dev_lock);
1768 return eq_id;
1769 }
1770
1771 static void ocrdma_unbind_eq(struct ocrdma_dev *dev, u16 eq_id)
1772 {
1773 int i;
1774
1775 mutex_lock(&dev->dev_lock);
1776 i = ocrdma_get_eq_table_index(dev, eq_id);
1777 if (i == -EINVAL)
1778 BUG();
1779 dev->eq_tbl[i].cq_cnt -= 1;
1780 mutex_unlock(&dev->dev_lock);
1781 }
1782
1783 int ocrdma_mbx_create_cq(struct ocrdma_dev *dev, struct ocrdma_cq *cq,
1784 int entries, int dpp_cq, u16 pd_id)
1785 {
1786 int status = -ENOMEM; int max_hw_cqe;
1787 struct pci_dev *pdev = dev->nic_info.pdev;
1788 struct ocrdma_create_cq *cmd;
1789 struct ocrdma_create_cq_rsp *rsp;
1790 u32 hw_pages, cqe_size, page_size, cqe_count;
1791
1792 if (entries > dev->attr.max_cqe) {
1793 pr_err("%s(%d) max_cqe=0x%x, requester_cqe=0x%x\n",
1794 __func__, dev->id, dev->attr.max_cqe, entries);
1795 return -EINVAL;
1796 }
1797 if (dpp_cq && (ocrdma_get_asic_type(dev) != OCRDMA_ASIC_GEN_SKH_R))
1798 return -EINVAL;
1799
1800 if (dpp_cq) {
1801 cq->max_hw_cqe = 1;
1802 max_hw_cqe = 1;
1803 cqe_size = OCRDMA_DPP_CQE_SIZE;
1804 hw_pages = 1;
1805 } else {
1806 cq->max_hw_cqe = dev->attr.max_cqe;
1807 max_hw_cqe = dev->attr.max_cqe;
1808 cqe_size = sizeof(struct ocrdma_cqe);
1809 hw_pages = OCRDMA_CREATE_CQ_MAX_PAGES;
1810 }
1811
1812 cq->len = roundup(max_hw_cqe * cqe_size, OCRDMA_MIN_Q_PAGE_SIZE);
1813
1814 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_CQ, sizeof(*cmd));
1815 if (!cmd)
1816 return -ENOMEM;
1817 ocrdma_init_mch(&cmd->cmd.req, OCRDMA_CMD_CREATE_CQ,
1818 OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1819 cq->va = dma_alloc_coherent(&pdev->dev, cq->len, &cq->pa, GFP_KERNEL);
1820 if (!cq->va) {
1821 status = -ENOMEM;
1822 goto mem_err;
1823 }
1824 memset(cq->va, 0, cq->len);
1825 page_size = cq->len / hw_pages;
1826 cmd->cmd.pgsz_pgcnt = (page_size / OCRDMA_MIN_Q_PAGE_SIZE) <<
1827 OCRDMA_CREATE_CQ_PAGE_SIZE_SHIFT;
1828 cmd->cmd.pgsz_pgcnt |= hw_pages;
1829 cmd->cmd.ev_cnt_flags = OCRDMA_CREATE_CQ_DEF_FLAGS;
1830
1831 cq->eqn = ocrdma_bind_eq(dev);
1832 cmd->cmd.req.rsvd_version = OCRDMA_CREATE_CQ_VER3;
1833 cqe_count = cq->len / cqe_size;
1834 cq->cqe_cnt = cqe_count;
1835 if (cqe_count > 1024) {
1836 /* Set cnt to 3 to indicate more than 1024 cq entries */
1837 cmd->cmd.ev_cnt_flags |= (0x3 << OCRDMA_CREATE_CQ_CNT_SHIFT);
1838 } else {
1839 u8 count = 0;
1840 switch (cqe_count) {
1841 case 256:
1842 count = 0;
1843 break;
1844 case 512:
1845 count = 1;
1846 break;
1847 case 1024:
1848 count = 2;
1849 break;
1850 default:
1851 goto mbx_err;
1852 }
1853 cmd->cmd.ev_cnt_flags |= (count << OCRDMA_CREATE_CQ_CNT_SHIFT);
1854 }
1855 /* shared eq between all the consumer cqs. */
1856 cmd->cmd.eqn = cq->eqn;
1857 if (ocrdma_get_asic_type(dev) == OCRDMA_ASIC_GEN_SKH_R) {
1858 if (dpp_cq)
1859 cmd->cmd.pgsz_pgcnt |= OCRDMA_CREATE_CQ_DPP <<
1860 OCRDMA_CREATE_CQ_TYPE_SHIFT;
1861 cq->phase_change = false;
1862 cmd->cmd.pdid_cqecnt = (cq->len / cqe_size);
1863 } else {
1864 cmd->cmd.pdid_cqecnt = (cq->len / cqe_size) - 1;
1865 cmd->cmd.ev_cnt_flags |= OCRDMA_CREATE_CQ_FLAGS_AUTO_VALID;
1866 cq->phase_change = true;
1867 }
1868
1869 /* pd_id valid only for v3 */
1870 cmd->cmd.pdid_cqecnt |= (pd_id <<
1871 OCRDMA_CREATE_CQ_CMD_PDID_SHIFT);
1872 ocrdma_build_q_pages(&cmd->cmd.pa[0], hw_pages, cq->pa, page_size);
1873 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1874 if (status)
1875 goto mbx_err;
1876
1877 rsp = (struct ocrdma_create_cq_rsp *)cmd;
1878 cq->id = (u16) (rsp->rsp.cq_id & OCRDMA_CREATE_CQ_RSP_CQ_ID_MASK);
1879 kfree(cmd);
1880 return 0;
1881 mbx_err:
1882 ocrdma_unbind_eq(dev, cq->eqn);
1883 dma_free_coherent(&pdev->dev, cq->len, cq->va, cq->pa);
1884 mem_err:
1885 kfree(cmd);
1886 return status;
1887 }
1888
1889 int ocrdma_mbx_destroy_cq(struct ocrdma_dev *dev, struct ocrdma_cq *cq)
1890 {
1891 int status = -ENOMEM;
1892 struct ocrdma_destroy_cq *cmd;
1893
1894 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_CQ, sizeof(*cmd));
1895 if (!cmd)
1896 return status;
1897 ocrdma_init_mch(&cmd->req, OCRDMA_CMD_DELETE_CQ,
1898 OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1899
1900 cmd->bypass_flush_qid |=
1901 (cq->id << OCRDMA_DESTROY_CQ_QID_SHIFT) &
1902 OCRDMA_DESTROY_CQ_QID_MASK;
1903
1904 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1905 ocrdma_unbind_eq(dev, cq->eqn);
1906 dma_free_coherent(&dev->nic_info.pdev->dev, cq->len, cq->va, cq->pa);
1907 kfree(cmd);
1908 return status;
1909 }
1910
1911 int ocrdma_mbx_alloc_lkey(struct ocrdma_dev *dev, struct ocrdma_hw_mr *hwmr,
1912 u32 pdid, int addr_check)
1913 {
1914 int status = -ENOMEM;
1915 struct ocrdma_alloc_lkey *cmd;
1916 struct ocrdma_alloc_lkey_rsp *rsp;
1917
1918 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_LKEY, sizeof(*cmd));
1919 if (!cmd)
1920 return status;
1921 cmd->pdid = pdid;
1922 cmd->pbl_sz_flags |= addr_check;
1923 cmd->pbl_sz_flags |= (hwmr->fr_mr << OCRDMA_ALLOC_LKEY_FMR_SHIFT);
1924 cmd->pbl_sz_flags |=
1925 (hwmr->remote_wr << OCRDMA_ALLOC_LKEY_REMOTE_WR_SHIFT);
1926 cmd->pbl_sz_flags |=
1927 (hwmr->remote_rd << OCRDMA_ALLOC_LKEY_REMOTE_RD_SHIFT);
1928 cmd->pbl_sz_flags |=
1929 (hwmr->local_wr << OCRDMA_ALLOC_LKEY_LOCAL_WR_SHIFT);
1930 cmd->pbl_sz_flags |=
1931 (hwmr->remote_atomic << OCRDMA_ALLOC_LKEY_REMOTE_ATOMIC_SHIFT);
1932 cmd->pbl_sz_flags |=
1933 (hwmr->num_pbls << OCRDMA_ALLOC_LKEY_PBL_SIZE_SHIFT);
1934
1935 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1936 if (status)
1937 goto mbx_err;
1938 rsp = (struct ocrdma_alloc_lkey_rsp *)cmd;
1939 hwmr->lkey = rsp->lrkey;
1940 mbx_err:
1941 kfree(cmd);
1942 return status;
1943 }
1944
1945 int ocrdma_mbx_dealloc_lkey(struct ocrdma_dev *dev, int fr_mr, u32 lkey)
1946 {
1947 int status = -ENOMEM;
1948 struct ocrdma_dealloc_lkey *cmd;
1949
1950 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_LKEY, sizeof(*cmd));
1951 if (!cmd)
1952 return -ENOMEM;
1953 cmd->lkey = lkey;
1954 cmd->rsvd_frmr = fr_mr ? 1 : 0;
1955 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1956 if (status)
1957 goto mbx_err;
1958 mbx_err:
1959 kfree(cmd);
1960 return status;
1961 }
1962
1963 static int ocrdma_mbx_reg_mr(struct ocrdma_dev *dev, struct ocrdma_hw_mr *hwmr,
1964 u32 pdid, u32 pbl_cnt, u32 pbe_size, u32 last)
1965 {
1966 int status = -ENOMEM;
1967 int i;
1968 struct ocrdma_reg_nsmr *cmd;
1969 struct ocrdma_reg_nsmr_rsp *rsp;
1970
1971 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_REGISTER_NSMR, sizeof(*cmd));
1972 if (!cmd)
1973 return -ENOMEM;
1974 cmd->num_pbl_pdid =
1975 pdid | (hwmr->num_pbls << OCRDMA_REG_NSMR_NUM_PBL_SHIFT);
1976 cmd->fr_mr = hwmr->fr_mr;
1977
1978 cmd->flags_hpage_pbe_sz |= (hwmr->remote_wr <<
1979 OCRDMA_REG_NSMR_REMOTE_WR_SHIFT);
1980 cmd->flags_hpage_pbe_sz |= (hwmr->remote_rd <<
1981 OCRDMA_REG_NSMR_REMOTE_RD_SHIFT);
1982 cmd->flags_hpage_pbe_sz |= (hwmr->local_wr <<
1983 OCRDMA_REG_NSMR_LOCAL_WR_SHIFT);
1984 cmd->flags_hpage_pbe_sz |= (hwmr->remote_atomic <<
1985 OCRDMA_REG_NSMR_REMOTE_ATOMIC_SHIFT);
1986 cmd->flags_hpage_pbe_sz |= (hwmr->mw_bind <<
1987 OCRDMA_REG_NSMR_BIND_MEMWIN_SHIFT);
1988 cmd->flags_hpage_pbe_sz |= (last << OCRDMA_REG_NSMR_LAST_SHIFT);
1989
1990 cmd->flags_hpage_pbe_sz |= (hwmr->pbe_size / OCRDMA_MIN_HPAGE_SIZE);
1991 cmd->flags_hpage_pbe_sz |= (hwmr->pbl_size / OCRDMA_MIN_HPAGE_SIZE) <<
1992 OCRDMA_REG_NSMR_HPAGE_SIZE_SHIFT;
1993 cmd->totlen_low = hwmr->len;
1994 cmd->totlen_high = upper_32_bits(hwmr->len);
1995 cmd->fbo_low = (u32) (hwmr->fbo & 0xffffffff);
1996 cmd->fbo_high = (u32) upper_32_bits(hwmr->fbo);
1997 cmd->va_loaddr = (u32) hwmr->va;
1998 cmd->va_hiaddr = (u32) upper_32_bits(hwmr->va);
1999
2000 for (i = 0; i < pbl_cnt; i++) {
2001 cmd->pbl[i].lo = (u32) (hwmr->pbl_table[i].pa & 0xffffffff);
2002 cmd->pbl[i].hi = upper_32_bits(hwmr->pbl_table[i].pa);
2003 }
2004 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2005 if (status)
2006 goto mbx_err;
2007 rsp = (struct ocrdma_reg_nsmr_rsp *)cmd;
2008 hwmr->lkey = rsp->lrkey;
2009 mbx_err:
2010 kfree(cmd);
2011 return status;
2012 }
2013
2014 static int ocrdma_mbx_reg_mr_cont(struct ocrdma_dev *dev,
2015 struct ocrdma_hw_mr *hwmr, u32 pbl_cnt,
2016 u32 pbl_offset, u32 last)
2017 {
2018 int status = -ENOMEM;
2019 int i;
2020 struct ocrdma_reg_nsmr_cont *cmd;
2021
2022 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_REGISTER_NSMR_CONT, sizeof(*cmd));
2023 if (!cmd)
2024 return -ENOMEM;
2025 cmd->lrkey = hwmr->lkey;
2026 cmd->num_pbl_offset = (pbl_cnt << OCRDMA_REG_NSMR_CONT_NUM_PBL_SHIFT) |
2027 (pbl_offset & OCRDMA_REG_NSMR_CONT_PBL_SHIFT_MASK);
2028 cmd->last = last << OCRDMA_REG_NSMR_CONT_LAST_SHIFT;
2029
2030 for (i = 0; i < pbl_cnt; i++) {
2031 cmd->pbl[i].lo =
2032 (u32) (hwmr->pbl_table[i + pbl_offset].pa & 0xffffffff);
2033 cmd->pbl[i].hi =
2034 upper_32_bits(hwmr->pbl_table[i + pbl_offset].pa);
2035 }
2036 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2037 if (status)
2038 goto mbx_err;
2039 mbx_err:
2040 kfree(cmd);
2041 return status;
2042 }
2043
2044 int ocrdma_reg_mr(struct ocrdma_dev *dev,
2045 struct ocrdma_hw_mr *hwmr, u32 pdid, int acc)
2046 {
2047 int status;
2048 u32 last = 0;
2049 u32 cur_pbl_cnt, pbl_offset;
2050 u32 pending_pbl_cnt = hwmr->num_pbls;
2051
2052 pbl_offset = 0;
2053 cur_pbl_cnt = min(pending_pbl_cnt, MAX_OCRDMA_NSMR_PBL);
2054 if (cur_pbl_cnt == pending_pbl_cnt)
2055 last = 1;
2056
2057 status = ocrdma_mbx_reg_mr(dev, hwmr, pdid,
2058 cur_pbl_cnt, hwmr->pbe_size, last);
2059 if (status) {
2060 pr_err("%s() status=%d\n", __func__, status);
2061 return status;
2062 }
2063 /* if there is no more pbls to register then exit. */
2064 if (last)
2065 return 0;
2066
2067 while (!last) {
2068 pbl_offset += cur_pbl_cnt;
2069 pending_pbl_cnt -= cur_pbl_cnt;
2070 cur_pbl_cnt = min(pending_pbl_cnt, MAX_OCRDMA_NSMR_PBL);
2071 /* if we reach the end of the pbls, then need to set the last
2072 * bit, indicating no more pbls to register for this memory key.
2073 */
2074 if (cur_pbl_cnt == pending_pbl_cnt)
2075 last = 1;
2076
2077 status = ocrdma_mbx_reg_mr_cont(dev, hwmr, cur_pbl_cnt,
2078 pbl_offset, last);
2079 if (status)
2080 break;
2081 }
2082 if (status)
2083 pr_err("%s() err. status=%d\n", __func__, status);
2084
2085 return status;
2086 }
2087
2088 bool ocrdma_is_qp_in_sq_flushlist(struct ocrdma_cq *cq, struct ocrdma_qp *qp)
2089 {
2090 struct ocrdma_qp *tmp;
2091 bool found = false;
2092 list_for_each_entry(tmp, &cq->sq_head, sq_entry) {
2093 if (qp == tmp) {
2094 found = true;
2095 break;
2096 }
2097 }
2098 return found;
2099 }
2100
2101 bool ocrdma_is_qp_in_rq_flushlist(struct ocrdma_cq *cq, struct ocrdma_qp *qp)
2102 {
2103 struct ocrdma_qp *tmp;
2104 bool found = false;
2105 list_for_each_entry(tmp, &cq->rq_head, rq_entry) {
2106 if (qp == tmp) {
2107 found = true;
2108 break;
2109 }
2110 }
2111 return found;
2112 }
2113
2114 void ocrdma_flush_qp(struct ocrdma_qp *qp)
2115 {
2116 bool found;
2117 unsigned long flags;
2118 struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device);
2119
2120 spin_lock_irqsave(&dev->flush_q_lock, flags);
2121 found = ocrdma_is_qp_in_sq_flushlist(qp->sq_cq, qp);
2122 if (!found)
2123 list_add_tail(&qp->sq_entry, &qp->sq_cq->sq_head);
2124 if (!qp->srq) {
2125 found = ocrdma_is_qp_in_rq_flushlist(qp->rq_cq, qp);
2126 if (!found)
2127 list_add_tail(&qp->rq_entry, &qp->rq_cq->rq_head);
2128 }
2129 spin_unlock_irqrestore(&dev->flush_q_lock, flags);
2130 }
2131
2132 static void ocrdma_init_hwq_ptr(struct ocrdma_qp *qp)
2133 {
2134 qp->sq.head = 0;
2135 qp->sq.tail = 0;
2136 qp->rq.head = 0;
2137 qp->rq.tail = 0;
2138 }
2139
2140 int ocrdma_qp_state_change(struct ocrdma_qp *qp, enum ib_qp_state new_ib_state,
2141 enum ib_qp_state *old_ib_state)
2142 {
2143 unsigned long flags;
2144 enum ocrdma_qp_state new_state;
2145 new_state = get_ocrdma_qp_state(new_ib_state);
2146
2147 /* sync with wqe and rqe posting */
2148 spin_lock_irqsave(&qp->q_lock, flags);
2149
2150 if (old_ib_state)
2151 *old_ib_state = get_ibqp_state(qp->state);
2152 if (new_state == qp->state) {
2153 spin_unlock_irqrestore(&qp->q_lock, flags);
2154 return 1;
2155 }
2156
2157
2158 if (new_state == OCRDMA_QPS_INIT) {
2159 ocrdma_init_hwq_ptr(qp);
2160 ocrdma_del_flush_qp(qp);
2161 } else if (new_state == OCRDMA_QPS_ERR) {
2162 ocrdma_flush_qp(qp);
2163 }
2164
2165 qp->state = new_state;
2166
2167 spin_unlock_irqrestore(&qp->q_lock, flags);
2168 return 0;
2169 }
2170
2171 static u32 ocrdma_set_create_qp_mbx_access_flags(struct ocrdma_qp *qp)
2172 {
2173 u32 flags = 0;
2174 if (qp->cap_flags & OCRDMA_QP_INB_RD)
2175 flags |= OCRDMA_CREATE_QP_REQ_INB_RDEN_MASK;
2176 if (qp->cap_flags & OCRDMA_QP_INB_WR)
2177 flags |= OCRDMA_CREATE_QP_REQ_INB_WREN_MASK;
2178 if (qp->cap_flags & OCRDMA_QP_MW_BIND)
2179 flags |= OCRDMA_CREATE_QP_REQ_BIND_MEMWIN_MASK;
2180 if (qp->cap_flags & OCRDMA_QP_LKEY0)
2181 flags |= OCRDMA_CREATE_QP_REQ_ZERO_LKEYEN_MASK;
2182 if (qp->cap_flags & OCRDMA_QP_FAST_REG)
2183 flags |= OCRDMA_CREATE_QP_REQ_FMR_EN_MASK;
2184 return flags;
2185 }
2186
2187 static int ocrdma_set_create_qp_sq_cmd(struct ocrdma_create_qp_req *cmd,
2188 struct ib_qp_init_attr *attrs,
2189 struct ocrdma_qp *qp)
2190 {
2191 int status;
2192 u32 len, hw_pages, hw_page_size;
2193 dma_addr_t pa;
2194 struct ocrdma_pd *pd = qp->pd;
2195 struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
2196 struct pci_dev *pdev = dev->nic_info.pdev;
2197 u32 max_wqe_allocated;
2198 u32 max_sges = attrs->cap.max_send_sge;
2199
2200 /* QP1 may exceed 127 */
2201 max_wqe_allocated = min_t(u32, attrs->cap.max_send_wr + 1,
2202 dev->attr.max_wqe);
2203
2204 status = ocrdma_build_q_conf(&max_wqe_allocated,
2205 dev->attr.wqe_size, &hw_pages, &hw_page_size);
2206 if (status) {
2207 pr_err("%s() req. max_send_wr=0x%x\n", __func__,
2208 max_wqe_allocated);
2209 return -EINVAL;
2210 }
2211 qp->sq.max_cnt = max_wqe_allocated;
2212 len = (hw_pages * hw_page_size);
2213
2214 qp->sq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL);
2215 if (!qp->sq.va)
2216 return -EINVAL;
2217 memset(qp->sq.va, 0, len);
2218 qp->sq.len = len;
2219 qp->sq.pa = pa;
2220 qp->sq.entry_size = dev->attr.wqe_size;
2221 ocrdma_build_q_pages(&cmd->wq_addr[0], hw_pages, pa, hw_page_size);
2222
2223 cmd->type_pgsz_pdn |= (ilog2(hw_page_size / OCRDMA_MIN_Q_PAGE_SIZE)
2224 << OCRDMA_CREATE_QP_REQ_SQ_PAGE_SIZE_SHIFT);
2225 cmd->num_wq_rq_pages |= (hw_pages <<
2226 OCRDMA_CREATE_QP_REQ_NUM_WQ_PAGES_SHIFT) &
2227 OCRDMA_CREATE_QP_REQ_NUM_WQ_PAGES_MASK;
2228 cmd->max_sge_send_write |= (max_sges <<
2229 OCRDMA_CREATE_QP_REQ_MAX_SGE_SEND_SHIFT) &
2230 OCRDMA_CREATE_QP_REQ_MAX_SGE_SEND_MASK;
2231 cmd->max_sge_send_write |= (max_sges <<
2232 OCRDMA_CREATE_QP_REQ_MAX_SGE_WRITE_SHIFT) &
2233 OCRDMA_CREATE_QP_REQ_MAX_SGE_WRITE_MASK;
2234 cmd->max_wqe_rqe |= (ilog2(qp->sq.max_cnt) <<
2235 OCRDMA_CREATE_QP_REQ_MAX_WQE_SHIFT) &
2236 OCRDMA_CREATE_QP_REQ_MAX_WQE_MASK;
2237 cmd->wqe_rqe_size |= (dev->attr.wqe_size <<
2238 OCRDMA_CREATE_QP_REQ_WQE_SIZE_SHIFT) &
2239 OCRDMA_CREATE_QP_REQ_WQE_SIZE_MASK;
2240 return 0;
2241 }
2242
2243 static int ocrdma_set_create_qp_rq_cmd(struct ocrdma_create_qp_req *cmd,
2244 struct ib_qp_init_attr *attrs,
2245 struct ocrdma_qp *qp)
2246 {
2247 int status;
2248 u32 len, hw_pages, hw_page_size;
2249 dma_addr_t pa = 0;
2250 struct ocrdma_pd *pd = qp->pd;
2251 struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
2252 struct pci_dev *pdev = dev->nic_info.pdev;
2253 u32 max_rqe_allocated = attrs->cap.max_recv_wr + 1;
2254
2255 status = ocrdma_build_q_conf(&max_rqe_allocated, dev->attr.rqe_size,
2256 &hw_pages, &hw_page_size);
2257 if (status) {
2258 pr_err("%s() req. max_recv_wr=0x%x\n", __func__,
2259 attrs->cap.max_recv_wr + 1);
2260 return status;
2261 }
2262 qp->rq.max_cnt = max_rqe_allocated;
2263 len = (hw_pages * hw_page_size);
2264
2265 qp->rq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL);
2266 if (!qp->rq.va)
2267 return -ENOMEM;
2268 memset(qp->rq.va, 0, len);
2269 qp->rq.pa = pa;
2270 qp->rq.len = len;
2271 qp->rq.entry_size = dev->attr.rqe_size;
2272
2273 ocrdma_build_q_pages(&cmd->rq_addr[0], hw_pages, pa, hw_page_size);
2274 cmd->type_pgsz_pdn |= (ilog2(hw_page_size / OCRDMA_MIN_Q_PAGE_SIZE) <<
2275 OCRDMA_CREATE_QP_REQ_RQ_PAGE_SIZE_SHIFT);
2276 cmd->num_wq_rq_pages |=
2277 (hw_pages << OCRDMA_CREATE_QP_REQ_NUM_RQ_PAGES_SHIFT) &
2278 OCRDMA_CREATE_QP_REQ_NUM_RQ_PAGES_MASK;
2279 cmd->max_sge_recv_flags |= (attrs->cap.max_recv_sge <<
2280 OCRDMA_CREATE_QP_REQ_MAX_SGE_RECV_SHIFT) &
2281 OCRDMA_CREATE_QP_REQ_MAX_SGE_RECV_MASK;
2282 cmd->max_wqe_rqe |= (ilog2(qp->rq.max_cnt) <<
2283 OCRDMA_CREATE_QP_REQ_MAX_RQE_SHIFT) &
2284 OCRDMA_CREATE_QP_REQ_MAX_RQE_MASK;
2285 cmd->wqe_rqe_size |= (dev->attr.rqe_size <<
2286 OCRDMA_CREATE_QP_REQ_RQE_SIZE_SHIFT) &
2287 OCRDMA_CREATE_QP_REQ_RQE_SIZE_MASK;
2288 return 0;
2289 }
2290
2291 static void ocrdma_set_create_qp_dpp_cmd(struct ocrdma_create_qp_req *cmd,
2292 struct ocrdma_pd *pd,
2293 struct ocrdma_qp *qp,
2294 u8 enable_dpp_cq, u16 dpp_cq_id)
2295 {
2296 pd->num_dpp_qp--;
2297 qp->dpp_enabled = true;
2298 cmd->max_sge_recv_flags |= OCRDMA_CREATE_QP_REQ_ENABLE_DPP_MASK;
2299 if (!enable_dpp_cq)
2300 return;
2301 cmd->max_sge_recv_flags |= OCRDMA_CREATE_QP_REQ_ENABLE_DPP_MASK;
2302 cmd->dpp_credits_cqid = dpp_cq_id;
2303 cmd->dpp_credits_cqid |= OCRDMA_CREATE_QP_REQ_DPP_CREDIT_LIMIT <<
2304 OCRDMA_CREATE_QP_REQ_DPP_CREDIT_SHIFT;
2305 }
2306
2307 static int ocrdma_set_create_qp_ird_cmd(struct ocrdma_create_qp_req *cmd,
2308 struct ocrdma_qp *qp)
2309 {
2310 struct ocrdma_pd *pd = qp->pd;
2311 struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
2312 struct pci_dev *pdev = dev->nic_info.pdev;
2313 dma_addr_t pa = 0;
2314 int ird_page_size = dev->attr.ird_page_size;
2315 int ird_q_len = dev->attr.num_ird_pages * ird_page_size;
2316 struct ocrdma_hdr_wqe *rqe;
2317 int i = 0;
2318
2319 if (dev->attr.ird == 0)
2320 return 0;
2321
2322 qp->ird_q_va = dma_alloc_coherent(&pdev->dev, ird_q_len,
2323 &pa, GFP_KERNEL);
2324 if (!qp->ird_q_va)
2325 return -ENOMEM;
2326 memset(qp->ird_q_va, 0, ird_q_len);
2327 ocrdma_build_q_pages(&cmd->ird_addr[0], dev->attr.num_ird_pages,
2328 pa, ird_page_size);
2329 for (; i < ird_q_len / dev->attr.rqe_size; i++) {
2330 rqe = (struct ocrdma_hdr_wqe *)(qp->ird_q_va +
2331 (i * dev->attr.rqe_size));
2332 rqe->cw = 0;
2333 rqe->cw |= 2;
2334 rqe->cw |= (OCRDMA_TYPE_LKEY << OCRDMA_WQE_TYPE_SHIFT);
2335 rqe->cw |= (8 << OCRDMA_WQE_SIZE_SHIFT);
2336 rqe->cw |= (8 << OCRDMA_WQE_NXT_WQE_SIZE_SHIFT);
2337 }
2338 return 0;
2339 }
2340
2341 static void ocrdma_get_create_qp_rsp(struct ocrdma_create_qp_rsp *rsp,
2342 struct ocrdma_qp *qp,
2343 struct ib_qp_init_attr *attrs,
2344 u16 *dpp_offset, u16 *dpp_credit_lmt)
2345 {
2346 u32 max_wqe_allocated, max_rqe_allocated;
2347 qp->id = rsp->qp_id & OCRDMA_CREATE_QP_RSP_QP_ID_MASK;
2348 qp->rq.dbid = rsp->sq_rq_id & OCRDMA_CREATE_QP_RSP_RQ_ID_MASK;
2349 qp->sq.dbid = rsp->sq_rq_id >> OCRDMA_CREATE_QP_RSP_SQ_ID_SHIFT;
2350 qp->max_ird = rsp->max_ord_ird & OCRDMA_CREATE_QP_RSP_MAX_IRD_MASK;
2351 qp->max_ord = (rsp->max_ord_ird >> OCRDMA_CREATE_QP_RSP_MAX_ORD_SHIFT);
2352 qp->dpp_enabled = false;
2353 if (rsp->dpp_response & OCRDMA_CREATE_QP_RSP_DPP_ENABLED_MASK) {
2354 qp->dpp_enabled = true;
2355 *dpp_credit_lmt = (rsp->dpp_response &
2356 OCRDMA_CREATE_QP_RSP_DPP_CREDITS_MASK) >>
2357 OCRDMA_CREATE_QP_RSP_DPP_CREDITS_SHIFT;
2358 *dpp_offset = (rsp->dpp_response &
2359 OCRDMA_CREATE_QP_RSP_DPP_PAGE_OFFSET_MASK) >>
2360 OCRDMA_CREATE_QP_RSP_DPP_PAGE_OFFSET_SHIFT;
2361 }
2362 max_wqe_allocated =
2363 rsp->max_wqe_rqe >> OCRDMA_CREATE_QP_RSP_MAX_WQE_SHIFT;
2364 max_wqe_allocated = 1 << max_wqe_allocated;
2365 max_rqe_allocated = 1 << ((u16)rsp->max_wqe_rqe);
2366
2367 qp->sq.max_cnt = max_wqe_allocated;
2368 qp->sq.max_wqe_idx = max_wqe_allocated - 1;
2369
2370 if (!attrs->srq) {
2371 qp->rq.max_cnt = max_rqe_allocated;
2372 qp->rq.max_wqe_idx = max_rqe_allocated - 1;
2373 }
2374 }
2375
2376 int ocrdma_mbx_create_qp(struct ocrdma_qp *qp, struct ib_qp_init_attr *attrs,
2377 u8 enable_dpp_cq, u16 dpp_cq_id, u16 *dpp_offset,
2378 u16 *dpp_credit_lmt)
2379 {
2380 int status = -ENOMEM;
2381 u32 flags = 0;
2382 struct ocrdma_pd *pd = qp->pd;
2383 struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
2384 struct pci_dev *pdev = dev->nic_info.pdev;
2385 struct ocrdma_cq *cq;
2386 struct ocrdma_create_qp_req *cmd;
2387 struct ocrdma_create_qp_rsp *rsp;
2388 int qptype;
2389
2390 switch (attrs->qp_type) {
2391 case IB_QPT_GSI:
2392 qptype = OCRDMA_QPT_GSI;
2393 break;
2394 case IB_QPT_RC:
2395 qptype = OCRDMA_QPT_RC;
2396 break;
2397 case IB_QPT_UD:
2398 qptype = OCRDMA_QPT_UD;
2399 break;
2400 default:
2401 return -EINVAL;
2402 }
2403
2404 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_QP, sizeof(*cmd));
2405 if (!cmd)
2406 return status;
2407 cmd->type_pgsz_pdn |= (qptype << OCRDMA_CREATE_QP_REQ_QPT_SHIFT) &
2408 OCRDMA_CREATE_QP_REQ_QPT_MASK;
2409 status = ocrdma_set_create_qp_sq_cmd(cmd, attrs, qp);
2410 if (status)
2411 goto sq_err;
2412
2413 if (attrs->srq) {
2414 struct ocrdma_srq *srq = get_ocrdma_srq(attrs->srq);
2415 cmd->max_sge_recv_flags |= OCRDMA_CREATE_QP_REQ_USE_SRQ_MASK;
2416 cmd->rq_addr[0].lo = srq->id;
2417 qp->srq = srq;
2418 } else {
2419 status = ocrdma_set_create_qp_rq_cmd(cmd, attrs, qp);
2420 if (status)
2421 goto rq_err;
2422 }
2423
2424 status = ocrdma_set_create_qp_ird_cmd(cmd, qp);
2425 if (status)
2426 goto mbx_err;
2427
2428 cmd->type_pgsz_pdn |= (pd->id << OCRDMA_CREATE_QP_REQ_PD_ID_SHIFT) &
2429 OCRDMA_CREATE_QP_REQ_PD_ID_MASK;
2430
2431 flags = ocrdma_set_create_qp_mbx_access_flags(qp);
2432
2433 cmd->max_sge_recv_flags |= flags;
2434 cmd->max_ord_ird |= (dev->attr.max_ord_per_qp <<
2435 OCRDMA_CREATE_QP_REQ_MAX_ORD_SHIFT) &
2436 OCRDMA_CREATE_QP_REQ_MAX_ORD_MASK;
2437 cmd->max_ord_ird |= (dev->attr.max_ird_per_qp <<
2438 OCRDMA_CREATE_QP_REQ_MAX_IRD_SHIFT) &
2439 OCRDMA_CREATE_QP_REQ_MAX_IRD_MASK;
2440 cq = get_ocrdma_cq(attrs->send_cq);
2441 cmd->wq_rq_cqid |= (cq->id << OCRDMA_CREATE_QP_REQ_WQ_CQID_SHIFT) &
2442 OCRDMA_CREATE_QP_REQ_WQ_CQID_MASK;
2443 qp->sq_cq = cq;
2444 cq = get_ocrdma_cq(attrs->recv_cq);
2445 cmd->wq_rq_cqid |= (cq->id << OCRDMA_CREATE_QP_REQ_RQ_CQID_SHIFT) &
2446 OCRDMA_CREATE_QP_REQ_RQ_CQID_MASK;
2447 qp->rq_cq = cq;
2448
2449 if (pd->dpp_enabled && attrs->cap.max_inline_data && pd->num_dpp_qp &&
2450 (attrs->cap.max_inline_data <= dev->attr.max_inline_data)) {
2451 ocrdma_set_create_qp_dpp_cmd(cmd, pd, qp, enable_dpp_cq,
2452 dpp_cq_id);
2453 }
2454
2455 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2456 if (status)
2457 goto mbx_err;
2458 rsp = (struct ocrdma_create_qp_rsp *)cmd;
2459 ocrdma_get_create_qp_rsp(rsp, qp, attrs, dpp_offset, dpp_credit_lmt);
2460 qp->state = OCRDMA_QPS_RST;
2461 kfree(cmd);
2462 return 0;
2463 mbx_err:
2464 if (qp->rq.va)
2465 dma_free_coherent(&pdev->dev, qp->rq.len, qp->rq.va, qp->rq.pa);
2466 rq_err:
2467 pr_err("%s(%d) rq_err\n", __func__, dev->id);
2468 dma_free_coherent(&pdev->dev, qp->sq.len, qp->sq.va, qp->sq.pa);
2469 sq_err:
2470 pr_err("%s(%d) sq_err\n", __func__, dev->id);
2471 kfree(cmd);
2472 return status;
2473 }
2474
2475 int ocrdma_mbx_query_qp(struct ocrdma_dev *dev, struct ocrdma_qp *qp,
2476 struct ocrdma_qp_params *param)
2477 {
2478 int status = -ENOMEM;
2479 struct ocrdma_query_qp *cmd;
2480 struct ocrdma_query_qp_rsp *rsp;
2481
2482 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_QP, sizeof(*rsp));
2483 if (!cmd)
2484 return status;
2485 cmd->qp_id = qp->id;
2486 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2487 if (status)
2488 goto mbx_err;
2489 rsp = (struct ocrdma_query_qp_rsp *)cmd;
2490 memcpy(param, &rsp->params, sizeof(struct ocrdma_qp_params));
2491 mbx_err:
2492 kfree(cmd);
2493 return status;
2494 }
2495
2496 static int ocrdma_set_av_params(struct ocrdma_qp *qp,
2497 struct ocrdma_modify_qp *cmd,
2498 struct ib_qp_attr *attrs,
2499 int attr_mask)
2500 {
2501 int status;
2502 struct ib_ah_attr *ah_attr = &attrs->ah_attr;
2503 union ib_gid sgid, zgid;
2504 struct ib_gid_attr sgid_attr;
2505 u32 vlan_id = 0xFFFF;
2506 u8 mac_addr[6], hdr_type;
2507 union {
2508 struct sockaddr _sockaddr;
2509 struct sockaddr_in _sockaddr_in;
2510 struct sockaddr_in6 _sockaddr_in6;
2511 } sgid_addr, dgid_addr;
2512 struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device);
2513
2514 if ((ah_attr->ah_flags & IB_AH_GRH) == 0)
2515 return -EINVAL;
2516 if (atomic_cmpxchg(&dev->update_sl, 1, 0))
2517 ocrdma_init_service_level(dev);
2518 cmd->params.tclass_sq_psn |=
2519 (ah_attr->grh.traffic_class << OCRDMA_QP_PARAMS_TCLASS_SHIFT);
2520 cmd->params.rnt_rc_sl_fl |=
2521 (ah_attr->grh.flow_label & OCRDMA_QP_PARAMS_FLOW_LABEL_MASK);
2522 cmd->params.rnt_rc_sl_fl |= (ah_attr->sl << OCRDMA_QP_PARAMS_SL_SHIFT);
2523 cmd->params.hop_lmt_rq_psn |=
2524 (ah_attr->grh.hop_limit << OCRDMA_QP_PARAMS_HOP_LMT_SHIFT);
2525 cmd->flags |= OCRDMA_QP_PARA_FLOW_LBL_VALID;
2526
2527 /* GIDs */
2528 memcpy(&cmd->params.dgid[0], &ah_attr->grh.dgid.raw[0],
2529 sizeof(cmd->params.dgid));
2530
2531 status = ib_get_cached_gid(&dev->ibdev, 1, ah_attr->grh.sgid_index,
2532 &sgid, &sgid_attr);
2533 if (!status && sgid_attr.ndev) {
2534 vlan_id = rdma_vlan_dev_vlan_id(sgid_attr.ndev);
2535 memcpy(mac_addr, sgid_attr.ndev->dev_addr, ETH_ALEN);
2536 dev_put(sgid_attr.ndev);
2537 }
2538
2539 memset(&zgid, 0, sizeof(zgid));
2540 if (!memcmp(&sgid, &zgid, sizeof(zgid)))
2541 return -EINVAL;
2542
2543 qp->sgid_idx = ah_attr->grh.sgid_index;
2544 memcpy(&cmd->params.sgid[0], &sgid.raw[0], sizeof(cmd->params.sgid));
2545 status = ocrdma_resolve_dmac(dev, ah_attr, &mac_addr[0]);
2546 if (status)
2547 return status;
2548 cmd->params.dmac_b0_to_b3 = mac_addr[0] | (mac_addr[1] << 8) |
2549 (mac_addr[2] << 16) | (mac_addr[3] << 24);
2550
2551 hdr_type = ib_gid_to_network_type(sgid_attr.gid_type, &sgid);
2552 if (hdr_type == RDMA_NETWORK_IPV4) {
2553 rdma_gid2ip(&sgid_addr._sockaddr, &sgid);
2554 rdma_gid2ip(&dgid_addr._sockaddr, &ah_attr->grh.dgid);
2555 memcpy(&cmd->params.dgid[0],
2556 &dgid_addr._sockaddr_in.sin_addr.s_addr, 4);
2557 memcpy(&cmd->params.sgid[0],
2558 &sgid_addr._sockaddr_in.sin_addr.s_addr, 4);
2559 }
2560 /* convert them to LE format. */
2561 ocrdma_cpu_to_le32(&cmd->params.dgid[0], sizeof(cmd->params.dgid));
2562 ocrdma_cpu_to_le32(&cmd->params.sgid[0], sizeof(cmd->params.sgid));
2563 cmd->params.vlan_dmac_b4_to_b5 = mac_addr[4] | (mac_addr[5] << 8);
2564
2565 if (vlan_id == 0xFFFF)
2566 vlan_id = 0;
2567 if (vlan_id || dev->pfc_state) {
2568 if (!vlan_id) {
2569 pr_err("ocrdma%d:Using VLAN with PFC is recommended\n",
2570 dev->id);
2571 pr_err("ocrdma%d:Using VLAN 0 for this connection\n",
2572 dev->id);
2573 }
2574 cmd->params.vlan_dmac_b4_to_b5 |=
2575 vlan_id << OCRDMA_QP_PARAMS_VLAN_SHIFT;
2576 cmd->flags |= OCRDMA_QP_PARA_VLAN_EN_VALID;
2577 cmd->params.rnt_rc_sl_fl |=
2578 (dev->sl & 0x07) << OCRDMA_QP_PARAMS_SL_SHIFT;
2579 }
2580 cmd->params.max_sge_recv_flags |= ((hdr_type <<
2581 OCRDMA_QP_PARAMS_FLAGS_L3_TYPE_SHIFT) &
2582 OCRDMA_QP_PARAMS_FLAGS_L3_TYPE_MASK);
2583 return 0;
2584 }
2585
2586 static int ocrdma_set_qp_params(struct ocrdma_qp *qp,
2587 struct ocrdma_modify_qp *cmd,
2588 struct ib_qp_attr *attrs, int attr_mask)
2589 {
2590 int status = 0;
2591 struct ocrdma_dev *dev = get_ocrdma_dev(qp->ibqp.device);
2592
2593 if (attr_mask & IB_QP_PKEY_INDEX) {
2594 cmd->params.path_mtu_pkey_indx |= (attrs->pkey_index &
2595 OCRDMA_QP_PARAMS_PKEY_INDEX_MASK);
2596 cmd->flags |= OCRDMA_QP_PARA_PKEY_VALID;
2597 }
2598 if (attr_mask & IB_QP_QKEY) {
2599 qp->qkey = attrs->qkey;
2600 cmd->params.qkey = attrs->qkey;
2601 cmd->flags |= OCRDMA_QP_PARA_QKEY_VALID;
2602 }
2603 if (attr_mask & IB_QP_AV) {
2604 status = ocrdma_set_av_params(qp, cmd, attrs, attr_mask);
2605 if (status)
2606 return status;
2607 } else if (qp->qp_type == IB_QPT_GSI || qp->qp_type == IB_QPT_UD) {
2608 /* set the default mac address for UD, GSI QPs */
2609 cmd->params.dmac_b0_to_b3 = dev->nic_info.mac_addr[0] |
2610 (dev->nic_info.mac_addr[1] << 8) |
2611 (dev->nic_info.mac_addr[2] << 16) |
2612 (dev->nic_info.mac_addr[3] << 24);
2613 cmd->params.vlan_dmac_b4_to_b5 = dev->nic_info.mac_addr[4] |
2614 (dev->nic_info.mac_addr[5] << 8);
2615 }
2616 if ((attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY) &&
2617 attrs->en_sqd_async_notify) {
2618 cmd->params.max_sge_recv_flags |=
2619 OCRDMA_QP_PARAMS_FLAGS_SQD_ASYNC;
2620 cmd->flags |= OCRDMA_QP_PARA_DST_QPN_VALID;
2621 }
2622 if (attr_mask & IB_QP_DEST_QPN) {
2623 cmd->params.ack_to_rnr_rtc_dest_qpn |= (attrs->dest_qp_num &
2624 OCRDMA_QP_PARAMS_DEST_QPN_MASK);
2625 cmd->flags |= OCRDMA_QP_PARA_DST_QPN_VALID;
2626 }
2627 if (attr_mask & IB_QP_PATH_MTU) {
2628 if (attrs->path_mtu < IB_MTU_512 ||
2629 attrs->path_mtu > IB_MTU_4096) {
2630 pr_err("ocrdma%d: IB MTU %d is not supported\n",
2631 dev->id, ib_mtu_enum_to_int(attrs->path_mtu));
2632 status = -EINVAL;
2633 goto pmtu_err;
2634 }
2635 cmd->params.path_mtu_pkey_indx |=
2636 (ib_mtu_enum_to_int(attrs->path_mtu) <<
2637 OCRDMA_QP_PARAMS_PATH_MTU_SHIFT) &
2638 OCRDMA_QP_PARAMS_PATH_MTU_MASK;
2639 cmd->flags |= OCRDMA_QP_PARA_PMTU_VALID;
2640 }
2641 if (attr_mask & IB_QP_TIMEOUT) {
2642 cmd->params.ack_to_rnr_rtc_dest_qpn |= attrs->timeout <<
2643 OCRDMA_QP_PARAMS_ACK_TIMEOUT_SHIFT;
2644 cmd->flags |= OCRDMA_QP_PARA_ACK_TO_VALID;
2645 }
2646 if (attr_mask & IB_QP_RETRY_CNT) {
2647 cmd->params.rnt_rc_sl_fl |= (attrs->retry_cnt <<
2648 OCRDMA_QP_PARAMS_RETRY_CNT_SHIFT) &
2649 OCRDMA_QP_PARAMS_RETRY_CNT_MASK;
2650 cmd->flags |= OCRDMA_QP_PARA_RETRY_CNT_VALID;
2651 }
2652 if (attr_mask & IB_QP_MIN_RNR_TIMER) {
2653 cmd->params.rnt_rc_sl_fl |= (attrs->min_rnr_timer <<
2654 OCRDMA_QP_PARAMS_RNR_NAK_TIMER_SHIFT) &
2655 OCRDMA_QP_PARAMS_RNR_NAK_TIMER_MASK;
2656 cmd->flags |= OCRDMA_QP_PARA_RNT_VALID;
2657 }
2658 if (attr_mask & IB_QP_RNR_RETRY) {
2659 cmd->params.ack_to_rnr_rtc_dest_qpn |= (attrs->rnr_retry <<
2660 OCRDMA_QP_PARAMS_RNR_RETRY_CNT_SHIFT)
2661 & OCRDMA_QP_PARAMS_RNR_RETRY_CNT_MASK;
2662 cmd->flags |= OCRDMA_QP_PARA_RRC_VALID;
2663 }
2664 if (attr_mask & IB_QP_SQ_PSN) {
2665 cmd->params.tclass_sq_psn |= (attrs->sq_psn & 0x00ffffff);
2666 cmd->flags |= OCRDMA_QP_PARA_SQPSN_VALID;
2667 }
2668 if (attr_mask & IB_QP_RQ_PSN) {
2669 cmd->params.hop_lmt_rq_psn |= (attrs->rq_psn & 0x00ffffff);
2670 cmd->flags |= OCRDMA_QP_PARA_RQPSN_VALID;
2671 }
2672 if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
2673 if (attrs->max_rd_atomic > dev->attr.max_ord_per_qp) {
2674 status = -EINVAL;
2675 goto pmtu_err;
2676 }
2677 qp->max_ord = attrs->max_rd_atomic;
2678 cmd->flags |= OCRDMA_QP_PARA_MAX_ORD_VALID;
2679 }
2680 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
2681 if (attrs->max_dest_rd_atomic > dev->attr.max_ird_per_qp) {
2682 status = -EINVAL;
2683 goto pmtu_err;
2684 }
2685 qp->max_ird = attrs->max_dest_rd_atomic;
2686 cmd->flags |= OCRDMA_QP_PARA_MAX_IRD_VALID;
2687 }
2688 cmd->params.max_ord_ird = (qp->max_ord <<
2689 OCRDMA_QP_PARAMS_MAX_ORD_SHIFT) |
2690 (qp->max_ird & OCRDMA_QP_PARAMS_MAX_IRD_MASK);
2691 pmtu_err:
2692 return status;
2693 }
2694
2695 int ocrdma_mbx_modify_qp(struct ocrdma_dev *dev, struct ocrdma_qp *qp,
2696 struct ib_qp_attr *attrs, int attr_mask)
2697 {
2698 int status = -ENOMEM;
2699 struct ocrdma_modify_qp *cmd;
2700
2701 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_MODIFY_QP, sizeof(*cmd));
2702 if (!cmd)
2703 return status;
2704
2705 cmd->params.id = qp->id;
2706 cmd->flags = 0;
2707 if (attr_mask & IB_QP_STATE) {
2708 cmd->params.max_sge_recv_flags |=
2709 (get_ocrdma_qp_state(attrs->qp_state) <<
2710 OCRDMA_QP_PARAMS_STATE_SHIFT) &
2711 OCRDMA_QP_PARAMS_STATE_MASK;
2712 cmd->flags |= OCRDMA_QP_PARA_QPS_VALID;
2713 } else {
2714 cmd->params.max_sge_recv_flags |=
2715 (qp->state << OCRDMA_QP_PARAMS_STATE_SHIFT) &
2716 OCRDMA_QP_PARAMS_STATE_MASK;
2717 }
2718
2719 status = ocrdma_set_qp_params(qp, cmd, attrs, attr_mask);
2720 if (status)
2721 goto mbx_err;
2722 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2723 if (status)
2724 goto mbx_err;
2725
2726 mbx_err:
2727 kfree(cmd);
2728 return status;
2729 }
2730
2731 int ocrdma_mbx_destroy_qp(struct ocrdma_dev *dev, struct ocrdma_qp *qp)
2732 {
2733 int status = -ENOMEM;
2734 struct ocrdma_destroy_qp *cmd;
2735 struct pci_dev *pdev = dev->nic_info.pdev;
2736
2737 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_QP, sizeof(*cmd));
2738 if (!cmd)
2739 return status;
2740 cmd->qp_id = qp->id;
2741 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2742 if (status)
2743 goto mbx_err;
2744
2745 mbx_err:
2746 kfree(cmd);
2747 if (qp->sq.va)
2748 dma_free_coherent(&pdev->dev, qp->sq.len, qp->sq.va, qp->sq.pa);
2749 if (!qp->srq && qp->rq.va)
2750 dma_free_coherent(&pdev->dev, qp->rq.len, qp->rq.va, qp->rq.pa);
2751 if (qp->dpp_enabled)
2752 qp->pd->num_dpp_qp++;
2753 return status;
2754 }
2755
2756 int ocrdma_mbx_create_srq(struct ocrdma_dev *dev, struct ocrdma_srq *srq,
2757 struct ib_srq_init_attr *srq_attr,
2758 struct ocrdma_pd *pd)
2759 {
2760 int status = -ENOMEM;
2761 int hw_pages, hw_page_size;
2762 int len;
2763 struct ocrdma_create_srq_rsp *rsp;
2764 struct ocrdma_create_srq *cmd;
2765 dma_addr_t pa;
2766 struct pci_dev *pdev = dev->nic_info.pdev;
2767 u32 max_rqe_allocated;
2768
2769 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_SRQ, sizeof(*cmd));
2770 if (!cmd)
2771 return status;
2772
2773 cmd->pgsz_pdid = pd->id & OCRDMA_CREATE_SRQ_PD_ID_MASK;
2774 max_rqe_allocated = srq_attr->attr.max_wr + 1;
2775 status = ocrdma_build_q_conf(&max_rqe_allocated,
2776 dev->attr.rqe_size,
2777 &hw_pages, &hw_page_size);
2778 if (status) {
2779 pr_err("%s() req. max_wr=0x%x\n", __func__,
2780 srq_attr->attr.max_wr);
2781 status = -EINVAL;
2782 goto ret;
2783 }
2784 len = hw_pages * hw_page_size;
2785 srq->rq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL);
2786 if (!srq->rq.va) {
2787 status = -ENOMEM;
2788 goto ret;
2789 }
2790 ocrdma_build_q_pages(&cmd->rq_addr[0], hw_pages, pa, hw_page_size);
2791
2792 srq->rq.entry_size = dev->attr.rqe_size;
2793 srq->rq.pa = pa;
2794 srq->rq.len = len;
2795 srq->rq.max_cnt = max_rqe_allocated;
2796
2797 cmd->max_sge_rqe = ilog2(max_rqe_allocated);
2798 cmd->max_sge_rqe |= srq_attr->attr.max_sge <<
2799 OCRDMA_CREATE_SRQ_MAX_SGE_RECV_SHIFT;
2800
2801 cmd->pgsz_pdid |= (ilog2(hw_page_size / OCRDMA_MIN_Q_PAGE_SIZE)
2802 << OCRDMA_CREATE_SRQ_PG_SZ_SHIFT);
2803 cmd->pages_rqe_sz |= (dev->attr.rqe_size
2804 << OCRDMA_CREATE_SRQ_RQE_SIZE_SHIFT)
2805 & OCRDMA_CREATE_SRQ_RQE_SIZE_MASK;
2806 cmd->pages_rqe_sz |= hw_pages << OCRDMA_CREATE_SRQ_NUM_RQ_PAGES_SHIFT;
2807
2808 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2809 if (status)
2810 goto mbx_err;
2811 rsp = (struct ocrdma_create_srq_rsp *)cmd;
2812 srq->id = rsp->id;
2813 srq->rq.dbid = rsp->id;
2814 max_rqe_allocated = ((rsp->max_sge_rqe_allocated &
2815 OCRDMA_CREATE_SRQ_RSP_MAX_RQE_ALLOCATED_MASK) >>
2816 OCRDMA_CREATE_SRQ_RSP_MAX_RQE_ALLOCATED_SHIFT);
2817 max_rqe_allocated = (1 << max_rqe_allocated);
2818 srq->rq.max_cnt = max_rqe_allocated;
2819 srq->rq.max_wqe_idx = max_rqe_allocated - 1;
2820 srq->rq.max_sges = (rsp->max_sge_rqe_allocated &
2821 OCRDMA_CREATE_SRQ_RSP_MAX_SGE_RECV_ALLOCATED_MASK) >>
2822 OCRDMA_CREATE_SRQ_RSP_MAX_SGE_RECV_ALLOCATED_SHIFT;
2823 goto ret;
2824 mbx_err:
2825 dma_free_coherent(&pdev->dev, srq->rq.len, srq->rq.va, pa);
2826 ret:
2827 kfree(cmd);
2828 return status;
2829 }
2830
2831 int ocrdma_mbx_modify_srq(struct ocrdma_srq *srq, struct ib_srq_attr *srq_attr)
2832 {
2833 int status = -ENOMEM;
2834 struct ocrdma_modify_srq *cmd;
2835 struct ocrdma_pd *pd = srq->pd;
2836 struct ocrdma_dev *dev = get_ocrdma_dev(pd->ibpd.device);
2837
2838 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_MODIFY_SRQ, sizeof(*cmd));
2839 if (!cmd)
2840 return status;
2841 cmd->id = srq->id;
2842 cmd->limit_max_rqe |= srq_attr->srq_limit <<
2843 OCRDMA_MODIFY_SRQ_LIMIT_SHIFT;
2844 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2845 kfree(cmd);
2846 return status;
2847 }
2848
2849 int ocrdma_mbx_query_srq(struct ocrdma_srq *srq, struct ib_srq_attr *srq_attr)
2850 {
2851 int status = -ENOMEM;
2852 struct ocrdma_query_srq *cmd;
2853 struct ocrdma_dev *dev = get_ocrdma_dev(srq->ibsrq.device);
2854
2855 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_SRQ, sizeof(*cmd));
2856 if (!cmd)
2857 return status;
2858 cmd->id = srq->rq.dbid;
2859 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2860 if (status == 0) {
2861 struct ocrdma_query_srq_rsp *rsp =
2862 (struct ocrdma_query_srq_rsp *)cmd;
2863 srq_attr->max_sge =
2864 rsp->srq_lmt_max_sge &
2865 OCRDMA_QUERY_SRQ_RSP_MAX_SGE_RECV_MASK;
2866 srq_attr->max_wr =
2867 rsp->max_rqe_pdid >> OCRDMA_QUERY_SRQ_RSP_MAX_RQE_SHIFT;
2868 srq_attr->srq_limit = rsp->srq_lmt_max_sge >>
2869 OCRDMA_QUERY_SRQ_RSP_SRQ_LIMIT_SHIFT;
2870 }
2871 kfree(cmd);
2872 return status;
2873 }
2874
2875 int ocrdma_mbx_destroy_srq(struct ocrdma_dev *dev, struct ocrdma_srq *srq)
2876 {
2877 int status = -ENOMEM;
2878 struct ocrdma_destroy_srq *cmd;
2879 struct pci_dev *pdev = dev->nic_info.pdev;
2880 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_SRQ, sizeof(*cmd));
2881 if (!cmd)
2882 return status;
2883 cmd->id = srq->id;
2884 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2885 if (srq->rq.va)
2886 dma_free_coherent(&pdev->dev, srq->rq.len,
2887 srq->rq.va, srq->rq.pa);
2888 kfree(cmd);
2889 return status;
2890 }
2891
2892 static int ocrdma_mbx_get_dcbx_config(struct ocrdma_dev *dev, u32 ptype,
2893 struct ocrdma_dcbx_cfg *dcbxcfg)
2894 {
2895 int status;
2896 dma_addr_t pa;
2897 struct ocrdma_mqe cmd;
2898
2899 struct ocrdma_get_dcbx_cfg_req *req = NULL;
2900 struct ocrdma_get_dcbx_cfg_rsp *rsp = NULL;
2901 struct pci_dev *pdev = dev->nic_info.pdev;
2902 struct ocrdma_mqe_sge *mqe_sge = cmd.u.nonemb_req.sge;
2903
2904 memset(&cmd, 0, sizeof(struct ocrdma_mqe));
2905 cmd.hdr.pyld_len = max_t (u32, sizeof(struct ocrdma_get_dcbx_cfg_rsp),
2906 sizeof(struct ocrdma_get_dcbx_cfg_req));
2907 req = dma_alloc_coherent(&pdev->dev, cmd.hdr.pyld_len, &pa, GFP_KERNEL);
2908 if (!req) {
2909 status = -ENOMEM;
2910 goto mem_err;
2911 }
2912
2913 cmd.hdr.spcl_sge_cnt_emb |= (1 << OCRDMA_MQE_HDR_SGE_CNT_SHIFT) &
2914 OCRDMA_MQE_HDR_SGE_CNT_MASK;
2915 mqe_sge->pa_lo = (u32) (pa & 0xFFFFFFFFUL);
2916 mqe_sge->pa_hi = (u32) upper_32_bits(pa);
2917 mqe_sge->len = cmd.hdr.pyld_len;
2918
2919 memset(req, 0, sizeof(struct ocrdma_get_dcbx_cfg_req));
2920 ocrdma_init_mch(&req->hdr, OCRDMA_CMD_GET_DCBX_CONFIG,
2921 OCRDMA_SUBSYS_DCBX, cmd.hdr.pyld_len);
2922 req->param_type = ptype;
2923
2924 status = ocrdma_mbx_cmd(dev, &cmd);
2925 if (status)
2926 goto mbx_err;
2927
2928 rsp = (struct ocrdma_get_dcbx_cfg_rsp *)req;
2929 ocrdma_le32_to_cpu(rsp, sizeof(struct ocrdma_get_dcbx_cfg_rsp));
2930 memcpy(dcbxcfg, &rsp->cfg, sizeof(struct ocrdma_dcbx_cfg));
2931
2932 mbx_err:
2933 dma_free_coherent(&pdev->dev, cmd.hdr.pyld_len, req, pa);
2934 mem_err:
2935 return status;
2936 }
2937
2938 #define OCRDMA_MAX_SERVICE_LEVEL_INDEX 0x08
2939 #define OCRDMA_DEFAULT_SERVICE_LEVEL 0x05
2940
2941 static int ocrdma_parse_dcbxcfg_rsp(struct ocrdma_dev *dev, int ptype,
2942 struct ocrdma_dcbx_cfg *dcbxcfg,
2943 u8 *srvc_lvl)
2944 {
2945 int status = -EINVAL, indx, slindx;
2946 int ventry_cnt;
2947 struct ocrdma_app_parameter *app_param;
2948 u8 valid, proto_sel;
2949 u8 app_prio, pfc_prio;
2950 u16 proto;
2951
2952 if (!(dcbxcfg->tcv_aev_opv_st & OCRDMA_DCBX_STATE_MASK)) {
2953 pr_info("%s ocrdma%d DCBX is disabled\n",
2954 dev_name(&dev->nic_info.pdev->dev), dev->id);
2955 goto out;
2956 }
2957
2958 if (!ocrdma_is_enabled_and_synced(dcbxcfg->pfc_state)) {
2959 pr_info("%s ocrdma%d priority flow control(%s) is %s%s\n",
2960 dev_name(&dev->nic_info.pdev->dev), dev->id,
2961 (ptype > 0 ? "operational" : "admin"),
2962 (dcbxcfg->pfc_state & OCRDMA_STATE_FLAG_ENABLED) ?
2963 "enabled" : "disabled",
2964 (dcbxcfg->pfc_state & OCRDMA_STATE_FLAG_SYNC) ?
2965 "" : ", not sync'ed");
2966 goto out;
2967 } else {
2968 pr_info("%s ocrdma%d priority flow control is enabled and sync'ed\n",
2969 dev_name(&dev->nic_info.pdev->dev), dev->id);
2970 }
2971
2972 ventry_cnt = (dcbxcfg->tcv_aev_opv_st >>
2973 OCRDMA_DCBX_APP_ENTRY_SHIFT)
2974 & OCRDMA_DCBX_STATE_MASK;
2975
2976 for (indx = 0; indx < ventry_cnt; indx++) {
2977 app_param = &dcbxcfg->app_param[indx];
2978 valid = (app_param->valid_proto_app >>
2979 OCRDMA_APP_PARAM_VALID_SHIFT)
2980 & OCRDMA_APP_PARAM_VALID_MASK;
2981 proto_sel = (app_param->valid_proto_app
2982 >> OCRDMA_APP_PARAM_PROTO_SEL_SHIFT)
2983 & OCRDMA_APP_PARAM_PROTO_SEL_MASK;
2984 proto = app_param->valid_proto_app &
2985 OCRDMA_APP_PARAM_APP_PROTO_MASK;
2986
2987 if (
2988 valid && proto == OCRDMA_APP_PROTO_ROCE &&
2989 proto_sel == OCRDMA_PROTO_SELECT_L2) {
2990 for (slindx = 0; slindx <
2991 OCRDMA_MAX_SERVICE_LEVEL_INDEX; slindx++) {
2992 app_prio = ocrdma_get_app_prio(
2993 (u8 *)app_param->app_prio,
2994 slindx);
2995 pfc_prio = ocrdma_get_pfc_prio(
2996 (u8 *)dcbxcfg->pfc_prio,
2997 slindx);
2998
2999 if (app_prio && pfc_prio) {
3000 *srvc_lvl = slindx;
3001 status = 0;
3002 goto out;
3003 }
3004 }
3005 if (slindx == OCRDMA_MAX_SERVICE_LEVEL_INDEX) {
3006 pr_info("%s ocrdma%d application priority not set for 0x%x protocol\n",
3007 dev_name(&dev->nic_info.pdev->dev),
3008 dev->id, proto);
3009 }
3010 }
3011 }
3012
3013 out:
3014 return status;
3015 }
3016
3017 void ocrdma_init_service_level(struct ocrdma_dev *dev)
3018 {
3019 int status = 0, indx;
3020 struct ocrdma_dcbx_cfg dcbxcfg;
3021 u8 srvc_lvl = OCRDMA_DEFAULT_SERVICE_LEVEL;
3022 int ptype = OCRDMA_PARAMETER_TYPE_OPER;
3023
3024 for (indx = 0; indx < 2; indx++) {
3025 status = ocrdma_mbx_get_dcbx_config(dev, ptype, &dcbxcfg);
3026 if (status) {
3027 pr_err("%s(): status=%d\n", __func__, status);
3028 ptype = OCRDMA_PARAMETER_TYPE_ADMIN;
3029 continue;
3030 }
3031
3032 status = ocrdma_parse_dcbxcfg_rsp(dev, ptype,
3033 &dcbxcfg, &srvc_lvl);
3034 if (status) {
3035 ptype = OCRDMA_PARAMETER_TYPE_ADMIN;
3036 continue;
3037 }
3038
3039 break;
3040 }
3041
3042 if (status)
3043 pr_info("%s ocrdma%d service level default\n",
3044 dev_name(&dev->nic_info.pdev->dev), dev->id);
3045 else
3046 pr_info("%s ocrdma%d service level %d\n",
3047 dev_name(&dev->nic_info.pdev->dev), dev->id,
3048 srvc_lvl);
3049
3050 dev->pfc_state = ocrdma_is_enabled_and_synced(dcbxcfg.pfc_state);
3051 dev->sl = srvc_lvl;
3052 }
3053
3054 int ocrdma_alloc_av(struct ocrdma_dev *dev, struct ocrdma_ah *ah)
3055 {
3056 int i;
3057 int status = -EINVAL;
3058 struct ocrdma_av *av;
3059 unsigned long flags;
3060
3061 av = dev->av_tbl.va;
3062 spin_lock_irqsave(&dev->av_tbl.lock, flags);
3063 for (i = 0; i < dev->av_tbl.num_ah; i++) {
3064 if (av->valid == 0) {
3065 av->valid = OCRDMA_AV_VALID;
3066 ah->av = av;
3067 ah->id = i;
3068 status = 0;
3069 break;
3070 }
3071 av++;
3072 }
3073 if (i == dev->av_tbl.num_ah)
3074 status = -EAGAIN;
3075 spin_unlock_irqrestore(&dev->av_tbl.lock, flags);
3076 return status;
3077 }
3078
3079 int ocrdma_free_av(struct ocrdma_dev *dev, struct ocrdma_ah *ah)
3080 {
3081 unsigned long flags;
3082 spin_lock_irqsave(&dev->av_tbl.lock, flags);
3083 ah->av->valid = 0;
3084 spin_unlock_irqrestore(&dev->av_tbl.lock, flags);
3085 return 0;
3086 }
3087
3088 static int ocrdma_create_eqs(struct ocrdma_dev *dev)
3089 {
3090 int num_eq, i, status = 0;
3091 int irq;
3092 unsigned long flags = 0;
3093
3094 num_eq = dev->nic_info.msix.num_vectors -
3095 dev->nic_info.msix.start_vector;
3096 if (dev->nic_info.intr_mode == BE_INTERRUPT_MODE_INTX) {
3097 num_eq = 1;
3098 flags = IRQF_SHARED;
3099 } else {
3100 num_eq = min_t(u32, num_eq, num_online_cpus());
3101 }
3102
3103 if (!num_eq)
3104 return -EINVAL;
3105
3106 dev->eq_tbl = kzalloc(sizeof(struct ocrdma_eq) * num_eq, GFP_KERNEL);
3107 if (!dev->eq_tbl)
3108 return -ENOMEM;
3109
3110 for (i = 0; i < num_eq; i++) {
3111 status = ocrdma_create_eq(dev, &dev->eq_tbl[i],
3112 OCRDMA_EQ_LEN);
3113 if (status) {
3114 status = -EINVAL;
3115 break;
3116 }
3117 sprintf(dev->eq_tbl[i].irq_name, "ocrdma%d-%d",
3118 dev->id, i);
3119 irq = ocrdma_get_irq(dev, &dev->eq_tbl[i]);
3120 status = request_irq(irq, ocrdma_irq_handler, flags,
3121 dev->eq_tbl[i].irq_name,
3122 &dev->eq_tbl[i]);
3123 if (status)
3124 goto done;
3125 dev->eq_cnt += 1;
3126 }
3127 /* one eq is sufficient for data path to work */
3128 return 0;
3129 done:
3130 ocrdma_destroy_eqs(dev);
3131 return status;
3132 }
3133
3134 static int ocrdma_mbx_modify_eqd(struct ocrdma_dev *dev, struct ocrdma_eq *eq,
3135 int num)
3136 {
3137 int i, status = -ENOMEM;
3138 struct ocrdma_modify_eqd_req *cmd;
3139
3140 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_MODIFY_EQ_DELAY, sizeof(*cmd));
3141 if (!cmd)
3142 return status;
3143
3144 ocrdma_init_mch(&cmd->cmd.req, OCRDMA_CMD_MODIFY_EQ_DELAY,
3145 OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
3146
3147 cmd->cmd.num_eq = num;
3148 for (i = 0; i < num; i++) {
3149 cmd->cmd.set_eqd[i].eq_id = eq[i].q.id;
3150 cmd->cmd.set_eqd[i].phase = 0;
3151 cmd->cmd.set_eqd[i].delay_multiplier =
3152 (eq[i].aic_obj.prev_eqd * 65)/100;
3153 }
3154 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
3155 if (status)
3156 goto mbx_err;
3157 mbx_err:
3158 kfree(cmd);
3159 return status;
3160 }
3161
3162 static int ocrdma_modify_eqd(struct ocrdma_dev *dev, struct ocrdma_eq *eq,
3163 int num)
3164 {
3165 int num_eqs, i = 0;
3166 if (num > 8) {
3167 while (num) {
3168 num_eqs = min(num, 8);
3169 ocrdma_mbx_modify_eqd(dev, &eq[i], num_eqs);
3170 i += num_eqs;
3171 num -= num_eqs;
3172 }
3173 } else {
3174 ocrdma_mbx_modify_eqd(dev, eq, num);
3175 }
3176 return 0;
3177 }
3178
3179 void ocrdma_eqd_set_task(struct work_struct *work)
3180 {
3181 struct ocrdma_dev *dev =
3182 container_of(work, struct ocrdma_dev, eqd_work.work);
3183 struct ocrdma_eq *eq = 0;
3184 int i, num = 0, status = -EINVAL;
3185 u64 eq_intr;
3186
3187 for (i = 0; i < dev->eq_cnt; i++) {
3188 eq = &dev->eq_tbl[i];
3189 if (eq->aic_obj.eq_intr_cnt > eq->aic_obj.prev_eq_intr_cnt) {
3190 eq_intr = eq->aic_obj.eq_intr_cnt -
3191 eq->aic_obj.prev_eq_intr_cnt;
3192 if ((eq_intr > EQ_INTR_PER_SEC_THRSH_HI) &&
3193 (eq->aic_obj.prev_eqd == EQ_AIC_MIN_EQD)) {
3194 eq->aic_obj.prev_eqd = EQ_AIC_MAX_EQD;
3195 num++;
3196 } else if ((eq_intr < EQ_INTR_PER_SEC_THRSH_LOW) &&
3197 (eq->aic_obj.prev_eqd == EQ_AIC_MAX_EQD)) {
3198 eq->aic_obj.prev_eqd = EQ_AIC_MIN_EQD;
3199 num++;
3200 }
3201 }
3202 eq->aic_obj.prev_eq_intr_cnt = eq->aic_obj.eq_intr_cnt;
3203 }
3204
3205 if (num)
3206 status = ocrdma_modify_eqd(dev, &dev->eq_tbl[0], num);
3207 schedule_delayed_work(&dev->eqd_work, msecs_to_jiffies(1000));
3208 }
3209
3210 int ocrdma_init_hw(struct ocrdma_dev *dev)
3211 {
3212 int status;
3213
3214 /* create the eqs */
3215 status = ocrdma_create_eqs(dev);
3216 if (status)
3217 goto qpeq_err;
3218 status = ocrdma_create_mq(dev);
3219 if (status)
3220 goto mq_err;
3221 status = ocrdma_mbx_query_fw_config(dev);
3222 if (status)
3223 goto conf_err;
3224 status = ocrdma_mbx_query_dev(dev);
3225 if (status)
3226 goto conf_err;
3227 status = ocrdma_mbx_query_fw_ver(dev);
3228 if (status)
3229 goto conf_err;
3230 status = ocrdma_mbx_create_ah_tbl(dev);
3231 if (status)
3232 goto conf_err;
3233 status = ocrdma_mbx_get_phy_info(dev);
3234 if (status)
3235 goto info_attrb_err;
3236 status = ocrdma_mbx_get_ctrl_attribs(dev);
3237 if (status)
3238 goto info_attrb_err;
3239
3240 return 0;
3241
3242 info_attrb_err:
3243 ocrdma_mbx_delete_ah_tbl(dev);
3244 conf_err:
3245 ocrdma_destroy_mq(dev);
3246 mq_err:
3247 ocrdma_destroy_eqs(dev);
3248 qpeq_err:
3249 pr_err("%s() status=%d\n", __func__, status);
3250 return status;
3251 }
3252
3253 void ocrdma_cleanup_hw(struct ocrdma_dev *dev)
3254 {
3255 ocrdma_free_pd_pool(dev);
3256 ocrdma_mbx_delete_ah_tbl(dev);
3257
3258 /* cleanup the control path */
3259 ocrdma_destroy_mq(dev);
3260
3261 /* cleanup the eqs */
3262 ocrdma_destroy_eqs(dev);
3263 }
Linux kernel - Deliverables
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