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-rw-r--r--drivers/infiniband/hw/ocrdma/ocrdma_hw.c2640
1 files changed, 2640 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
new file mode 100644
index 000000000000..9b204b1ba336
--- /dev/null
+++ b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
@@ -0,0 +1,2640 @@
1/*******************************************************************
2 * This file is part of the Emulex RoCE Device Driver for *
3 * RoCE (RDMA over Converged Ethernet) CNA Adapters. *
4 * Copyright (C) 2008-2012 Emulex. All rights reserved. *
5 * EMULEX and SLI are trademarks of Emulex. *
6 * www.emulex.com *
7 * *
8 * This program is free software; you can redistribute it and/or *
9 * modify it under the terms of version 2 of the GNU General *
10 * Public License as published by the Free Software Foundation. *
11 * This program is distributed in the hope that it will be useful. *
12 * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
13 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
14 * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
15 * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
16 * TO BE LEGALLY INVALID. See the GNU General Public License for *
17 * more details, a copy of which can be found in the file COPYING *
18 * included with this package. *
19 *
20 * Contact Information:
21 * linux-drivers@emulex.com
22 *
23 * Emulex
24 * 3333 Susan Street
25 * Costa Mesa, CA 92626
26 *******************************************************************/
27
28#include <linux/sched.h>
29#include <linux/interrupt.h>
30#include <linux/log2.h>
31#include <linux/dma-mapping.h>
32
33#include <rdma/ib_verbs.h>
34#include <rdma/ib_user_verbs.h>
35#include <rdma/ib_addr.h>
36
37#include "ocrdma.h"
38#include "ocrdma_hw.h"
39#include "ocrdma_verbs.h"
40#include "ocrdma_ah.h"
41
42enum mbx_status {
43 OCRDMA_MBX_STATUS_FAILED = 1,
44 OCRDMA_MBX_STATUS_ILLEGAL_FIELD = 3,
45 OCRDMA_MBX_STATUS_OOR = 100,
46 OCRDMA_MBX_STATUS_INVALID_PD = 101,
47 OCRDMA_MBX_STATUS_PD_INUSE = 102,
48 OCRDMA_MBX_STATUS_INVALID_CQ = 103,
49 OCRDMA_MBX_STATUS_INVALID_QP = 104,
50 OCRDMA_MBX_STATUS_INVALID_LKEY = 105,
51 OCRDMA_MBX_STATUS_ORD_EXCEEDS = 106,
52 OCRDMA_MBX_STATUS_IRD_EXCEEDS = 107,
53 OCRDMA_MBX_STATUS_SENDQ_WQE_EXCEEDS = 108,
54 OCRDMA_MBX_STATUS_RECVQ_RQE_EXCEEDS = 109,
55 OCRDMA_MBX_STATUS_SGE_SEND_EXCEEDS = 110,
56 OCRDMA_MBX_STATUS_SGE_WRITE_EXCEEDS = 111,
57 OCRDMA_MBX_STATUS_SGE_RECV_EXCEEDS = 112,
58 OCRDMA_MBX_STATUS_INVALID_STATE_CHANGE = 113,
59 OCRDMA_MBX_STATUS_MW_BOUND = 114,
60 OCRDMA_MBX_STATUS_INVALID_VA = 115,
61 OCRDMA_MBX_STATUS_INVALID_LENGTH = 116,
62 OCRDMA_MBX_STATUS_INVALID_FBO = 117,
63 OCRDMA_MBX_STATUS_INVALID_ACC_RIGHTS = 118,
64 OCRDMA_MBX_STATUS_INVALID_PBE_SIZE = 119,
65 OCRDMA_MBX_STATUS_INVALID_PBL_ENTRY = 120,
66 OCRDMA_MBX_STATUS_INVALID_PBL_SHIFT = 121,
67 OCRDMA_MBX_STATUS_INVALID_SRQ_ID = 129,
68 OCRDMA_MBX_STATUS_SRQ_ERROR = 133,
69 OCRDMA_MBX_STATUS_RQE_EXCEEDS = 134,
70 OCRDMA_MBX_STATUS_MTU_EXCEEDS = 135,
71 OCRDMA_MBX_STATUS_MAX_QP_EXCEEDS = 136,
72 OCRDMA_MBX_STATUS_SRQ_LIMIT_EXCEEDS = 137,
73 OCRDMA_MBX_STATUS_SRQ_SIZE_UNDERUNS = 138,
74 OCRDMA_MBX_STATUS_QP_BOUND = 130,
75 OCRDMA_MBX_STATUS_INVALID_CHANGE = 139,
76 OCRDMA_MBX_STATUS_ATOMIC_OPS_UNSUP = 140,
77 OCRDMA_MBX_STATUS_INVALID_RNR_NAK_TIMER = 141,
78 OCRDMA_MBX_STATUS_MW_STILL_BOUND = 142,
79 OCRDMA_MBX_STATUS_PKEY_INDEX_INVALID = 143,
80 OCRDMA_MBX_STATUS_PKEY_INDEX_EXCEEDS = 144
81};
82
83enum additional_status {
84 OCRDMA_MBX_ADDI_STATUS_INSUFFICIENT_RESOURCES = 22
85};
86
87enum cqe_status {
88 OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_PRIVILEDGES = 1,
89 OCRDMA_MBX_CQE_STATUS_INVALID_PARAMETER = 2,
90 OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_RESOURCES = 3,
91 OCRDMA_MBX_CQE_STATUS_QUEUE_FLUSHING = 4,
92 OCRDMA_MBX_CQE_STATUS_DMA_FAILED = 5
93};
94
95static inline void *ocrdma_get_eqe(struct ocrdma_eq *eq)
96{
97 return (u8 *)eq->q.va + (eq->q.tail * sizeof(struct ocrdma_eqe));
98}
99
100static inline void ocrdma_eq_inc_tail(struct ocrdma_eq *eq)
101{
102 eq->q.tail = (eq->q.tail + 1) & (OCRDMA_EQ_LEN - 1);
103}
104
105static inline void *ocrdma_get_mcqe(struct ocrdma_dev *dev)
106{
107 struct ocrdma_mcqe *cqe = (struct ocrdma_mcqe *)
108 ((u8 *) dev->mq.cq.va +
109 (dev->mq.cq.tail * sizeof(struct ocrdma_mcqe)));
110
111 if (!(le32_to_cpu(cqe->valid_ae_cmpl_cons) & OCRDMA_MCQE_VALID_MASK))
112 return NULL;
113 return cqe;
114}
115
116static inline void ocrdma_mcq_inc_tail(struct ocrdma_dev *dev)
117{
118 dev->mq.cq.tail = (dev->mq.cq.tail + 1) & (OCRDMA_MQ_CQ_LEN - 1);
119}
120
121static inline struct ocrdma_mqe *ocrdma_get_mqe(struct ocrdma_dev *dev)
122{
123 return (struct ocrdma_mqe *)((u8 *) dev->mq.sq.va +
124 (dev->mq.sq.head *
125 sizeof(struct ocrdma_mqe)));
126}
127
128static inline void ocrdma_mq_inc_head(struct ocrdma_dev *dev)
129{
130 dev->mq.sq.head = (dev->mq.sq.head + 1) & (OCRDMA_MQ_LEN - 1);
131 atomic_inc(&dev->mq.sq.used);
132}
133
134static inline void *ocrdma_get_mqe_rsp(struct ocrdma_dev *dev)
135{
136 return (void *)((u8 *) dev->mq.sq.va +
137 (dev->mqe_ctx.tag * sizeof(struct ocrdma_mqe)));
138}
139
140enum ib_qp_state get_ibqp_state(enum ocrdma_qp_state qps)
141{
142 switch (qps) {
143 case OCRDMA_QPS_RST:
144 return IB_QPS_RESET;
145 case OCRDMA_QPS_INIT:
146 return IB_QPS_INIT;
147 case OCRDMA_QPS_RTR:
148 return IB_QPS_RTR;
149 case OCRDMA_QPS_RTS:
150 return IB_QPS_RTS;
151 case OCRDMA_QPS_SQD:
152 case OCRDMA_QPS_SQ_DRAINING:
153 return IB_QPS_SQD;
154 case OCRDMA_QPS_SQE:
155 return IB_QPS_SQE;
156 case OCRDMA_QPS_ERR:
157 return IB_QPS_ERR;
158 };
159 return IB_QPS_ERR;
160}
161
162static enum ocrdma_qp_state get_ocrdma_qp_state(enum ib_qp_state qps)
163{
164 switch (qps) {
165 case IB_QPS_RESET:
166 return OCRDMA_QPS_RST;
167 case IB_QPS_INIT:
168 return OCRDMA_QPS_INIT;
169 case IB_QPS_RTR:
170 return OCRDMA_QPS_RTR;
171 case IB_QPS_RTS:
172 return OCRDMA_QPS_RTS;
173 case IB_QPS_SQD:
174 return OCRDMA_QPS_SQD;
175 case IB_QPS_SQE:
176 return OCRDMA_QPS_SQE;
177 case IB_QPS_ERR:
178 return OCRDMA_QPS_ERR;
179 };
180 return OCRDMA_QPS_ERR;
181}
182
183static int ocrdma_get_mbx_errno(u32 status)
184{
185 int err_num = -EFAULT;
186 u8 mbox_status = (status & OCRDMA_MBX_RSP_STATUS_MASK) >>
187 OCRDMA_MBX_RSP_STATUS_SHIFT;
188 u8 add_status = (status & OCRDMA_MBX_RSP_ASTATUS_MASK) >>
189 OCRDMA_MBX_RSP_ASTATUS_SHIFT;
190
191 switch (mbox_status) {
192 case OCRDMA_MBX_STATUS_OOR:
193 case OCRDMA_MBX_STATUS_MAX_QP_EXCEEDS:
194 err_num = -EAGAIN;
195 break;
196
197 case OCRDMA_MBX_STATUS_INVALID_PD:
198 case OCRDMA_MBX_STATUS_INVALID_CQ:
199 case OCRDMA_MBX_STATUS_INVALID_SRQ_ID:
200 case OCRDMA_MBX_STATUS_INVALID_QP:
201 case OCRDMA_MBX_STATUS_INVALID_CHANGE:
202 case OCRDMA_MBX_STATUS_MTU_EXCEEDS:
203 case OCRDMA_MBX_STATUS_INVALID_RNR_NAK_TIMER:
204 case OCRDMA_MBX_STATUS_PKEY_INDEX_INVALID:
205 case OCRDMA_MBX_STATUS_PKEY_INDEX_EXCEEDS:
206 case OCRDMA_MBX_STATUS_ILLEGAL_FIELD:
207 case OCRDMA_MBX_STATUS_INVALID_PBL_ENTRY:
208 case OCRDMA_MBX_STATUS_INVALID_LKEY:
209 case OCRDMA_MBX_STATUS_INVALID_VA:
210 case OCRDMA_MBX_STATUS_INVALID_LENGTH:
211 case OCRDMA_MBX_STATUS_INVALID_FBO:
212 case OCRDMA_MBX_STATUS_INVALID_ACC_RIGHTS:
213 case OCRDMA_MBX_STATUS_INVALID_PBE_SIZE:
214 case OCRDMA_MBX_STATUS_ATOMIC_OPS_UNSUP:
215 case OCRDMA_MBX_STATUS_SRQ_ERROR:
216 case OCRDMA_MBX_STATUS_SRQ_SIZE_UNDERUNS:
217 err_num = -EINVAL;
218 break;
219
220 case OCRDMA_MBX_STATUS_PD_INUSE:
221 case OCRDMA_MBX_STATUS_QP_BOUND:
222 case OCRDMA_MBX_STATUS_MW_STILL_BOUND:
223 case OCRDMA_MBX_STATUS_MW_BOUND:
224 err_num = -EBUSY;
225 break;
226
227 case OCRDMA_MBX_STATUS_RECVQ_RQE_EXCEEDS:
228 case OCRDMA_MBX_STATUS_SGE_RECV_EXCEEDS:
229 case OCRDMA_MBX_STATUS_RQE_EXCEEDS:
230 case OCRDMA_MBX_STATUS_SRQ_LIMIT_EXCEEDS:
231 case OCRDMA_MBX_STATUS_ORD_EXCEEDS:
232 case OCRDMA_MBX_STATUS_IRD_EXCEEDS:
233 case OCRDMA_MBX_STATUS_SENDQ_WQE_EXCEEDS:
234 case OCRDMA_MBX_STATUS_SGE_SEND_EXCEEDS:
235 case OCRDMA_MBX_STATUS_SGE_WRITE_EXCEEDS:
236 err_num = -ENOBUFS;
237 break;
238
239 case OCRDMA_MBX_STATUS_FAILED:
240 switch (add_status) {
241 case OCRDMA_MBX_ADDI_STATUS_INSUFFICIENT_RESOURCES:
242 err_num = -EAGAIN;
243 break;
244 }
245 default:
246 err_num = -EFAULT;
247 }
248 return err_num;
249}
250
251static int ocrdma_get_mbx_cqe_errno(u16 cqe_status)
252{
253 int err_num = -EINVAL;
254
255 switch (cqe_status) {
256 case OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_PRIVILEDGES:
257 err_num = -EPERM;
258 break;
259 case OCRDMA_MBX_CQE_STATUS_INVALID_PARAMETER:
260 err_num = -EINVAL;
261 break;
262 case OCRDMA_MBX_CQE_STATUS_INSUFFICIENT_RESOURCES:
263 case OCRDMA_MBX_CQE_STATUS_QUEUE_FLUSHING:
264 err_num = -EAGAIN;
265 break;
266 case OCRDMA_MBX_CQE_STATUS_DMA_FAILED:
267 err_num = -EIO;
268 break;
269 }
270 return err_num;
271}
272
273void ocrdma_ring_cq_db(struct ocrdma_dev *dev, u16 cq_id, bool armed,
274 bool solicited, u16 cqe_popped)
275{
276 u32 val = cq_id & OCRDMA_DB_CQ_RING_ID_MASK;
277
278 val |= ((cq_id & OCRDMA_DB_CQ_RING_ID_EXT_MASK) <<
279 OCRDMA_DB_CQ_RING_ID_EXT_MASK_SHIFT);
280
281 if (armed)
282 val |= (1 << OCRDMA_DB_CQ_REARM_SHIFT);
283 if (solicited)
284 val |= (1 << OCRDMA_DB_CQ_SOLICIT_SHIFT);
285 val |= (cqe_popped << OCRDMA_DB_CQ_NUM_POPPED_SHIFT);
286 iowrite32(val, dev->nic_info.db + OCRDMA_DB_CQ_OFFSET);
287}
288
289static void ocrdma_ring_mq_db(struct ocrdma_dev *dev)
290{
291 u32 val = 0;
292
293 val |= dev->mq.sq.id & OCRDMA_MQ_ID_MASK;
294 val |= 1 << OCRDMA_MQ_NUM_MQE_SHIFT;
295 iowrite32(val, dev->nic_info.db + OCRDMA_DB_MQ_OFFSET);
296}
297
298static void ocrdma_ring_eq_db(struct ocrdma_dev *dev, u16 eq_id,
299 bool arm, bool clear_int, u16 num_eqe)
300{
301 u32 val = 0;
302
303 val |= eq_id & OCRDMA_EQ_ID_MASK;
304 val |= ((eq_id & OCRDMA_EQ_ID_EXT_MASK) << OCRDMA_EQ_ID_EXT_MASK_SHIFT);
305 if (arm)
306 val |= (1 << OCRDMA_REARM_SHIFT);
307 if (clear_int)
308 val |= (1 << OCRDMA_EQ_CLR_SHIFT);
309 val |= (1 << OCRDMA_EQ_TYPE_SHIFT);
310 val |= (num_eqe << OCRDMA_NUM_EQE_SHIFT);
311 iowrite32(val, dev->nic_info.db + OCRDMA_DB_EQ_OFFSET);
312}
313
314static void ocrdma_init_mch(struct ocrdma_mbx_hdr *cmd_hdr,
315 u8 opcode, u8 subsys, u32 cmd_len)
316{
317 cmd_hdr->subsys_op = (opcode | (subsys << OCRDMA_MCH_SUBSYS_SHIFT));
318 cmd_hdr->timeout = 20; /* seconds */
319 cmd_hdr->cmd_len = cmd_len - sizeof(struct ocrdma_mbx_hdr);
320}
321
322static void *ocrdma_init_emb_mqe(u8 opcode, u32 cmd_len)
323{
324 struct ocrdma_mqe *mqe;
325
326 mqe = kzalloc(sizeof(struct ocrdma_mqe), GFP_KERNEL);
327 if (!mqe)
328 return NULL;
329 mqe->hdr.spcl_sge_cnt_emb |=
330 (OCRDMA_MQE_EMBEDDED << OCRDMA_MQE_HDR_EMB_SHIFT) &
331 OCRDMA_MQE_HDR_EMB_MASK;
332 mqe->hdr.pyld_len = cmd_len - sizeof(struct ocrdma_mqe_hdr);
333
334 ocrdma_init_mch(&mqe->u.emb_req.mch, opcode, OCRDMA_SUBSYS_ROCE,
335 mqe->hdr.pyld_len);
336 return mqe;
337}
338
339static void ocrdma_free_q(struct ocrdma_dev *dev, struct ocrdma_queue_info *q)
340{
341 dma_free_coherent(&dev->nic_info.pdev->dev, q->size, q->va, q->dma);
342}
343
344static int ocrdma_alloc_q(struct ocrdma_dev *dev,
345 struct ocrdma_queue_info *q, u16 len, u16 entry_size)
346{
347 memset(q, 0, sizeof(*q));
348 q->len = len;
349 q->entry_size = entry_size;
350 q->size = len * entry_size;
351 q->va = dma_alloc_coherent(&dev->nic_info.pdev->dev, q->size,
352 &q->dma, GFP_KERNEL);
353 if (!q->va)
354 return -ENOMEM;
355 memset(q->va, 0, q->size);
356 return 0;
357}
358
359static void ocrdma_build_q_pages(struct ocrdma_pa *q_pa, int cnt,
360 dma_addr_t host_pa, int hw_page_size)
361{
362 int i;
363
364 for (i = 0; i < cnt; i++) {
365 q_pa[i].lo = (u32) (host_pa & 0xffffffff);
366 q_pa[i].hi = (u32) upper_32_bits(host_pa);
367 host_pa += hw_page_size;
368 }
369}
370
371static void ocrdma_assign_eq_vect_gen2(struct ocrdma_dev *dev,
372 struct ocrdma_eq *eq)
373{
374 /* assign vector and update vector id for next EQ */
375 eq->vector = dev->nic_info.msix.start_vector;
376 dev->nic_info.msix.start_vector += 1;
377}
378
379static void ocrdma_free_eq_vect_gen2(struct ocrdma_dev *dev)
380{
381 /* this assumes that EQs are freed in exactly reverse order
382 * as its allocation.
383 */
384 dev->nic_info.msix.start_vector -= 1;
385}
386
387static int ocrdma_mbx_delete_q(struct ocrdma_dev *dev, struct ocrdma_queue_info *q,
388 int queue_type)
389{
390 u8 opcode = 0;
391 int status;
392 struct ocrdma_delete_q_req *cmd = dev->mbx_cmd;
393
394 switch (queue_type) {
395 case QTYPE_MCCQ:
396 opcode = OCRDMA_CMD_DELETE_MQ;
397 break;
398 case QTYPE_CQ:
399 opcode = OCRDMA_CMD_DELETE_CQ;
400 break;
401 case QTYPE_EQ:
402 opcode = OCRDMA_CMD_DELETE_EQ;
403 break;
404 default:
405 BUG();
406 }
407 memset(cmd, 0, sizeof(*cmd));
408 ocrdma_init_mch(&cmd->req, opcode, OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
409 cmd->id = q->id;
410
411 status = be_roce_mcc_cmd(dev->nic_info.netdev,
412 cmd, sizeof(*cmd), NULL, NULL);
413 if (!status)
414 q->created = false;
415 return status;
416}
417
418static int ocrdma_mbx_create_eq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
419{
420 int status;
421 struct ocrdma_create_eq_req *cmd = dev->mbx_cmd;
422 struct ocrdma_create_eq_rsp *rsp = dev->mbx_cmd;
423
424 memset(cmd, 0, sizeof(*cmd));
425 ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_EQ, OCRDMA_SUBSYS_COMMON,
426 sizeof(*cmd));
427 if (dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY)
428 cmd->req.rsvd_version = 0;
429 else
430 cmd->req.rsvd_version = 2;
431
432 cmd->num_pages = 4;
433 cmd->valid = OCRDMA_CREATE_EQ_VALID;
434 cmd->cnt = 4 << OCRDMA_CREATE_EQ_CNT_SHIFT;
435
436 ocrdma_build_q_pages(&cmd->pa[0], cmd->num_pages, eq->q.dma,
437 PAGE_SIZE_4K);
438 status = be_roce_mcc_cmd(dev->nic_info.netdev, cmd, sizeof(*cmd), NULL,
439 NULL);
440 if (!status) {
441 eq->q.id = rsp->vector_eqid & 0xffff;
442 if (dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY)
443 ocrdma_assign_eq_vect_gen2(dev, eq);
444 else {
445 eq->vector = (rsp->vector_eqid >> 16) & 0xffff;
446 dev->nic_info.msix.start_vector += 1;
447 }
448 eq->q.created = true;
449 }
450 return status;
451}
452
453static int ocrdma_create_eq(struct ocrdma_dev *dev,
454 struct ocrdma_eq *eq, u16 q_len)
455{
456 int status;
457
458 status = ocrdma_alloc_q(dev, &eq->q, OCRDMA_EQ_LEN,
459 sizeof(struct ocrdma_eqe));
460 if (status)
461 return status;
462
463 status = ocrdma_mbx_create_eq(dev, eq);
464 if (status)
465 goto mbx_err;
466 eq->dev = dev;
467 ocrdma_ring_eq_db(dev, eq->q.id, true, true, 0);
468
469 return 0;
470mbx_err:
471 ocrdma_free_q(dev, &eq->q);
472 return status;
473}
474
475static int ocrdma_get_irq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
476{
477 int irq;
478
479 if (dev->nic_info.intr_mode == BE_INTERRUPT_MODE_INTX)
480 irq = dev->nic_info.pdev->irq;
481 else
482 irq = dev->nic_info.msix.vector_list[eq->vector];
483 return irq;
484}
485
486static void _ocrdma_destroy_eq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
487{
488 if (eq->q.created) {
489 ocrdma_mbx_delete_q(dev, &eq->q, QTYPE_EQ);
490 if (dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY)
491 ocrdma_free_eq_vect_gen2(dev);
492 ocrdma_free_q(dev, &eq->q);
493 }
494}
495
496static void ocrdma_destroy_eq(struct ocrdma_dev *dev, struct ocrdma_eq *eq)
497{
498 int irq;
499
500 /* disarm EQ so that interrupts are not generated
501 * during freeing and EQ delete is in progress.
502 */
503 ocrdma_ring_eq_db(dev, eq->q.id, false, false, 0);
504
505 irq = ocrdma_get_irq(dev, eq);
506 free_irq(irq, eq);
507 _ocrdma_destroy_eq(dev, eq);
508}
509
510static void ocrdma_destroy_qp_eqs(struct ocrdma_dev *dev)
511{
512 int i;
513
514 /* deallocate the data path eqs */
515 for (i = 0; i < dev->eq_cnt; i++)
516 ocrdma_destroy_eq(dev, &dev->qp_eq_tbl[i]);
517}
518
519static int ocrdma_mbx_mq_cq_create(struct ocrdma_dev *dev,
520 struct ocrdma_queue_info *cq,
521 struct ocrdma_queue_info *eq)
522{
523 struct ocrdma_create_cq_cmd *cmd = dev->mbx_cmd;
524 struct ocrdma_create_cq_cmd_rsp *rsp = dev->mbx_cmd;
525 int status;
526
527 memset(cmd, 0, sizeof(*cmd));
528 ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_CQ,
529 OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
530
531 cmd->pgsz_pgcnt = PAGES_4K_SPANNED(cq->va, cq->size);
532 cmd->ev_cnt_flags = OCRDMA_CREATE_CQ_DEF_FLAGS;
533 cmd->eqn = (eq->id << OCRDMA_CREATE_CQ_EQID_SHIFT);
534
535 ocrdma_build_q_pages(&cmd->pa[0], cmd->pgsz_pgcnt,
536 cq->dma, PAGE_SIZE_4K);
537 status = be_roce_mcc_cmd(dev->nic_info.netdev,
538 cmd, sizeof(*cmd), NULL, NULL);
539 if (!status) {
540 cq->id = (rsp->cq_id & OCRDMA_CREATE_CQ_RSP_CQ_ID_MASK);
541 cq->created = true;
542 }
543 return status;
544}
545
546static u32 ocrdma_encoded_q_len(int q_len)
547{
548 u32 len_encoded = fls(q_len); /* log2(len) + 1 */
549
550 if (len_encoded == 16)
551 len_encoded = 0;
552 return len_encoded;
553}
554
555static int ocrdma_mbx_create_mq(struct ocrdma_dev *dev,
556 struct ocrdma_queue_info *mq,
557 struct ocrdma_queue_info *cq)
558{
559 int num_pages, status;
560 struct ocrdma_create_mq_req *cmd = dev->mbx_cmd;
561 struct ocrdma_create_mq_rsp *rsp = dev->mbx_cmd;
562 struct ocrdma_pa *pa;
563
564 memset(cmd, 0, sizeof(*cmd));
565 num_pages = PAGES_4K_SPANNED(mq->va, mq->size);
566
567 if (dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY) {
568 ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_MQ,
569 OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
570 cmd->v0.pages = num_pages;
571 cmd->v0.async_cqid_valid = OCRDMA_CREATE_MQ_ASYNC_CQ_VALID;
572 cmd->v0.async_cqid_valid = (cq->id << 1);
573 cmd->v0.cqid_ringsize |= (ocrdma_encoded_q_len(mq->len) <<
574 OCRDMA_CREATE_MQ_RING_SIZE_SHIFT);
575 cmd->v0.cqid_ringsize |=
576 (cq->id << OCRDMA_CREATE_MQ_V0_CQ_ID_SHIFT);
577 cmd->v0.valid = OCRDMA_CREATE_MQ_VALID;
578 pa = &cmd->v0.pa[0];
579 } else {
580 ocrdma_init_mch(&cmd->req, OCRDMA_CMD_CREATE_MQ_EXT,
581 OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
582 cmd->req.rsvd_version = 1;
583 cmd->v1.cqid_pages = num_pages;
584 cmd->v1.cqid_pages |= (cq->id << OCRDMA_CREATE_MQ_CQ_ID_SHIFT);
585 cmd->v1.async_cqid_valid = OCRDMA_CREATE_MQ_ASYNC_CQ_VALID;
586 cmd->v1.async_event_bitmap = Bit(20);
587 cmd->v1.async_cqid_ringsize = cq->id;
588 cmd->v1.async_cqid_ringsize |= (ocrdma_encoded_q_len(mq->len) <<
589 OCRDMA_CREATE_MQ_RING_SIZE_SHIFT);
590 cmd->v1.valid = OCRDMA_CREATE_MQ_VALID;
591 pa = &cmd->v1.pa[0];
592 }
593 ocrdma_build_q_pages(pa, num_pages, mq->dma, PAGE_SIZE_4K);
594 status = be_roce_mcc_cmd(dev->nic_info.netdev,
595 cmd, sizeof(*cmd), NULL, NULL);
596 if (!status) {
597 mq->id = rsp->id;
598 mq->created = true;
599 }
600 return status;
601}
602
603static int ocrdma_create_mq(struct ocrdma_dev *dev)
604{
605 int status;
606
607 /* Alloc completion queue for Mailbox queue */
608 status = ocrdma_alloc_q(dev, &dev->mq.cq, OCRDMA_MQ_CQ_LEN,
609 sizeof(struct ocrdma_mcqe));
610 if (status)
611 goto alloc_err;
612
613 status = ocrdma_mbx_mq_cq_create(dev, &dev->mq.cq, &dev->meq.q);
614 if (status)
615 goto mbx_cq_free;
616
617 memset(&dev->mqe_ctx, 0, sizeof(dev->mqe_ctx));
618 init_waitqueue_head(&dev->mqe_ctx.cmd_wait);
619 mutex_init(&dev->mqe_ctx.lock);
620
621 /* Alloc Mailbox queue */
622 status = ocrdma_alloc_q(dev, &dev->mq.sq, OCRDMA_MQ_LEN,
623 sizeof(struct ocrdma_mqe));
624 if (status)
625 goto mbx_cq_destroy;
626 status = ocrdma_mbx_create_mq(dev, &dev->mq.sq, &dev->mq.cq);
627 if (status)
628 goto mbx_q_free;
629 ocrdma_ring_cq_db(dev, dev->mq.cq.id, true, false, 0);
630 return 0;
631
632mbx_q_free:
633 ocrdma_free_q(dev, &dev->mq.sq);
634mbx_cq_destroy:
635 ocrdma_mbx_delete_q(dev, &dev->mq.cq, QTYPE_CQ);
636mbx_cq_free:
637 ocrdma_free_q(dev, &dev->mq.cq);
638alloc_err:
639 return status;
640}
641
642static void ocrdma_destroy_mq(struct ocrdma_dev *dev)
643{
644 struct ocrdma_queue_info *mbxq, *cq;
645
646 /* mqe_ctx lock synchronizes with any other pending cmds. */
647 mutex_lock(&dev->mqe_ctx.lock);
648 mbxq = &dev->mq.sq;
649 if (mbxq->created) {
650 ocrdma_mbx_delete_q(dev, mbxq, QTYPE_MCCQ);
651 ocrdma_free_q(dev, mbxq);
652 }
653 mutex_unlock(&dev->mqe_ctx.lock);
654
655 cq = &dev->mq.cq;
656 if (cq->created) {
657 ocrdma_mbx_delete_q(dev, cq, QTYPE_CQ);
658 ocrdma_free_q(dev, cq);
659 }
660}
661
662static void ocrdma_process_qpcat_error(struct ocrdma_dev *dev,
663 struct ocrdma_qp *qp)
664{
665 enum ib_qp_state new_ib_qps = IB_QPS_ERR;
666 enum ib_qp_state old_ib_qps;
667
668 if (qp == NULL)
669 BUG();
670 ocrdma_qp_state_machine(qp, new_ib_qps, &old_ib_qps);
671}
672
673static void ocrdma_dispatch_ibevent(struct ocrdma_dev *dev,
674 struct ocrdma_ae_mcqe *cqe)
675{
676 struct ocrdma_qp *qp = NULL;
677 struct ocrdma_cq *cq = NULL;
678 struct ib_event ib_evt;
679 int cq_event = 0;
680 int qp_event = 1;
681 int srq_event = 0;
682 int dev_event = 0;
683 int type = (cqe->valid_ae_event & OCRDMA_AE_MCQE_EVENT_TYPE_MASK) >>
684 OCRDMA_AE_MCQE_EVENT_TYPE_SHIFT;
685
686 if (cqe->qpvalid_qpid & OCRDMA_AE_MCQE_QPVALID)
687 qp = dev->qp_tbl[cqe->qpvalid_qpid & OCRDMA_AE_MCQE_QPID_MASK];
688 if (cqe->cqvalid_cqid & OCRDMA_AE_MCQE_CQVALID)
689 cq = dev->cq_tbl[cqe->cqvalid_cqid & OCRDMA_AE_MCQE_CQID_MASK];
690
691 ib_evt.device = &dev->ibdev;
692
693 switch (type) {
694 case OCRDMA_CQ_ERROR:
695 ib_evt.element.cq = &cq->ibcq;
696 ib_evt.event = IB_EVENT_CQ_ERR;
697 cq_event = 1;
698 qp_event = 0;
699 break;
700 case OCRDMA_CQ_OVERRUN_ERROR:
701 ib_evt.element.cq = &cq->ibcq;
702 ib_evt.event = IB_EVENT_CQ_ERR;
703 break;
704 case OCRDMA_CQ_QPCAT_ERROR:
705 ib_evt.element.qp = &qp->ibqp;
706 ib_evt.event = IB_EVENT_QP_FATAL;
707 ocrdma_process_qpcat_error(dev, qp);
708 break;
709 case OCRDMA_QP_ACCESS_ERROR:
710 ib_evt.element.qp = &qp->ibqp;
711 ib_evt.event = IB_EVENT_QP_ACCESS_ERR;
712 break;
713 case OCRDMA_QP_COMM_EST_EVENT:
714 ib_evt.element.qp = &qp->ibqp;
715 ib_evt.event = IB_EVENT_COMM_EST;
716 break;
717 case OCRDMA_SQ_DRAINED_EVENT:
718 ib_evt.element.qp = &qp->ibqp;
719 ib_evt.event = IB_EVENT_SQ_DRAINED;
720 break;
721 case OCRDMA_DEVICE_FATAL_EVENT:
722 ib_evt.element.port_num = 1;
723 ib_evt.event = IB_EVENT_DEVICE_FATAL;
724 qp_event = 0;
725 dev_event = 1;
726 break;
727 case OCRDMA_SRQCAT_ERROR:
728 ib_evt.element.srq = &qp->srq->ibsrq;
729 ib_evt.event = IB_EVENT_SRQ_ERR;
730 srq_event = 1;
731 qp_event = 0;
732 break;
733 case OCRDMA_SRQ_LIMIT_EVENT:
734 ib_evt.element.srq = &qp->srq->ibsrq;
735 ib_evt.event = IB_EVENT_QP_LAST_WQE_REACHED;
736 srq_event = 1;
737 qp_event = 0;
738 break;
739 case OCRDMA_QP_LAST_WQE_EVENT:
740 ib_evt.element.qp = &qp->ibqp;
741 ib_evt.event = IB_EVENT_QP_LAST_WQE_REACHED;
742 break;
743 default:
744 cq_event = 0;
745 qp_event = 0;
746 srq_event = 0;
747 dev_event = 0;
748 ocrdma_err("%s() unknown type=0x%x\n", __func__, type);
749 break;
750 }
751
752 if (qp_event) {
753 if (qp->ibqp.event_handler)
754 qp->ibqp.event_handler(&ib_evt, qp->ibqp.qp_context);
755 } else if (cq_event) {
756 if (cq->ibcq.event_handler)
757 cq->ibcq.event_handler(&ib_evt, cq->ibcq.cq_context);
758 } else if (srq_event) {
759 if (qp->srq->ibsrq.event_handler)
760 qp->srq->ibsrq.event_handler(&ib_evt,
761 qp->srq->ibsrq.
762 srq_context);
763 } else if (dev_event)
764 ib_dispatch_event(&ib_evt);
765
766}
767
768static void ocrdma_process_acqe(struct ocrdma_dev *dev, void *ae_cqe)
769{
770 /* async CQE processing */
771 struct ocrdma_ae_mcqe *cqe = ae_cqe;
772 u32 evt_code = (cqe->valid_ae_event & OCRDMA_AE_MCQE_EVENT_CODE_MASK) >>
773 OCRDMA_AE_MCQE_EVENT_CODE_SHIFT;
774
775 if (evt_code == OCRDMA_ASYNC_EVE_CODE)
776 ocrdma_dispatch_ibevent(dev, cqe);
777 else
778 ocrdma_err("%s(%d) invalid evt code=0x%x\n",
779 __func__, dev->id, evt_code);
780}
781
782static void ocrdma_process_mcqe(struct ocrdma_dev *dev, struct ocrdma_mcqe *cqe)
783{
784 if (dev->mqe_ctx.tag == cqe->tag_lo && dev->mqe_ctx.cmd_done == false) {
785 dev->mqe_ctx.cqe_status = (cqe->status &
786 OCRDMA_MCQE_STATUS_MASK) >> OCRDMA_MCQE_STATUS_SHIFT;
787 dev->mqe_ctx.ext_status =
788 (cqe->status & OCRDMA_MCQE_ESTATUS_MASK)
789 >> OCRDMA_MCQE_ESTATUS_SHIFT;
790 dev->mqe_ctx.cmd_done = true;
791 wake_up(&dev->mqe_ctx.cmd_wait);
792 } else
793 ocrdma_err("%s() cqe for invalid tag0x%x.expected=0x%x\n",
794 __func__, cqe->tag_lo, dev->mqe_ctx.tag);
795}
796
797static int ocrdma_mq_cq_handler(struct ocrdma_dev *dev, u16 cq_id)
798{
799 u16 cqe_popped = 0;
800 struct ocrdma_mcqe *cqe;
801
802 while (1) {
803 cqe = ocrdma_get_mcqe(dev);
804 if (cqe == NULL)
805 break;
806 ocrdma_le32_to_cpu(cqe, sizeof(*cqe));
807 cqe_popped += 1;
808 if (cqe->valid_ae_cmpl_cons & OCRDMA_MCQE_AE_MASK)
809 ocrdma_process_acqe(dev, cqe);
810 else if (cqe->valid_ae_cmpl_cons & OCRDMA_MCQE_CMPL_MASK)
811 ocrdma_process_mcqe(dev, cqe);
812 else
813 ocrdma_err("%s() cqe->compl is not set.\n", __func__);
814 memset(cqe, 0, sizeof(struct ocrdma_mcqe));
815 ocrdma_mcq_inc_tail(dev);
816 }
817 ocrdma_ring_cq_db(dev, dev->mq.cq.id, true, false, cqe_popped);
818 return 0;
819}
820
821static void ocrdma_qp_buddy_cq_handler(struct ocrdma_dev *dev,
822 struct ocrdma_cq *cq)
823{
824 unsigned long flags;
825 struct ocrdma_qp *qp;
826 bool buddy_cq_found = false;
827 /* Go through list of QPs in error state which are using this CQ
828 * and invoke its callback handler to trigger CQE processing for
829 * error/flushed CQE. It is rare to find more than few entries in
830 * this list as most consumers stops after getting error CQE.
831 * List is traversed only once when a matching buddy cq found for a QP.
832 */
833 spin_lock_irqsave(&dev->flush_q_lock, flags);
834 list_for_each_entry(qp, &cq->sq_head, sq_entry) {
835 if (qp->srq)
836 continue;
837 /* if wq and rq share the same cq, than comp_handler
838 * is already invoked.
839 */
840 if (qp->sq_cq == qp->rq_cq)
841 continue;
842 /* if completion came on sq, rq's cq is buddy cq.
843 * if completion came on rq, sq's cq is buddy cq.
844 */
845 if (qp->sq_cq == cq)
846 cq = qp->rq_cq;
847 else
848 cq = qp->sq_cq;
849 buddy_cq_found = true;
850 break;
851 }
852 spin_unlock_irqrestore(&dev->flush_q_lock, flags);
853 if (buddy_cq_found == false)
854 return;
855 if (cq->ibcq.comp_handler) {
856 spin_lock_irqsave(&cq->comp_handler_lock, flags);
857 (*cq->ibcq.comp_handler) (&cq->ibcq, cq->ibcq.cq_context);
858 spin_unlock_irqrestore(&cq->comp_handler_lock, flags);
859 }
860}
861
862static void ocrdma_qp_cq_handler(struct ocrdma_dev *dev, u16 cq_idx)
863{
864 unsigned long flags;
865 struct ocrdma_cq *cq;
866
867 if (cq_idx >= OCRDMA_MAX_CQ)
868 BUG();
869
870 cq = dev->cq_tbl[cq_idx];
871 if (cq == NULL) {
872 ocrdma_err("%s%d invalid id=0x%x\n", __func__, dev->id, cq_idx);
873 return;
874 }
875 spin_lock_irqsave(&cq->cq_lock, flags);
876 cq->armed = false;
877 cq->solicited = false;
878 spin_unlock_irqrestore(&cq->cq_lock, flags);
879
880 ocrdma_ring_cq_db(dev, cq->id, false, false, 0);
881
882 if (cq->ibcq.comp_handler) {
883 spin_lock_irqsave(&cq->comp_handler_lock, flags);
884 (*cq->ibcq.comp_handler) (&cq->ibcq, cq->ibcq.cq_context);
885 spin_unlock_irqrestore(&cq->comp_handler_lock, flags);
886 }
887 ocrdma_qp_buddy_cq_handler(dev, cq);
888}
889
890static void ocrdma_cq_handler(struct ocrdma_dev *dev, u16 cq_id)
891{
892 /* process the MQ-CQE. */
893 if (cq_id == dev->mq.cq.id)
894 ocrdma_mq_cq_handler(dev, cq_id);
895 else
896 ocrdma_qp_cq_handler(dev, cq_id);
897}
898
899static irqreturn_t ocrdma_irq_handler(int irq, void *handle)
900{
901 struct ocrdma_eq *eq = handle;
902 struct ocrdma_dev *dev = eq->dev;
903 struct ocrdma_eqe eqe;
904 struct ocrdma_eqe *ptr;
905 u16 eqe_popped = 0;
906 u16 cq_id;
907 while (1) {
908 ptr = ocrdma_get_eqe(eq);
909 eqe = *ptr;
910 ocrdma_le32_to_cpu(&eqe, sizeof(eqe));
911 if ((eqe.id_valid & OCRDMA_EQE_VALID_MASK) == 0)
912 break;
913 eqe_popped += 1;
914 ptr->id_valid = 0;
915 /* check whether its CQE or not. */
916 if ((eqe.id_valid & OCRDMA_EQE_FOR_CQE_MASK) == 0) {
917 cq_id = eqe.id_valid >> OCRDMA_EQE_RESOURCE_ID_SHIFT;
918 ocrdma_cq_handler(dev, cq_id);
919 }
920 ocrdma_eq_inc_tail(eq);
921 }
922 ocrdma_ring_eq_db(dev, eq->q.id, true, true, eqe_popped);
923 /* Ring EQ doorbell with num_popped to 0 to enable interrupts again. */
924 if (dev->nic_info.intr_mode == BE_INTERRUPT_MODE_INTX)
925 ocrdma_ring_eq_db(dev, eq->q.id, true, true, 0);
926 return IRQ_HANDLED;
927}
928
929static void ocrdma_post_mqe(struct ocrdma_dev *dev, struct ocrdma_mqe *cmd)
930{
931 struct ocrdma_mqe *mqe;
932
933 dev->mqe_ctx.tag = dev->mq.sq.head;
934 dev->mqe_ctx.cmd_done = false;
935 mqe = ocrdma_get_mqe(dev);
936 cmd->hdr.tag_lo = dev->mq.sq.head;
937 ocrdma_copy_cpu_to_le32(mqe, cmd, sizeof(*mqe));
938 /* make sure descriptor is written before ringing doorbell */
939 wmb();
940 ocrdma_mq_inc_head(dev);
941 ocrdma_ring_mq_db(dev);
942}
943
944static int ocrdma_wait_mqe_cmpl(struct ocrdma_dev *dev)
945{
946 long status;
947 /* 30 sec timeout */
948 status = wait_event_timeout(dev->mqe_ctx.cmd_wait,
949 (dev->mqe_ctx.cmd_done != false),
950 msecs_to_jiffies(30000));
951 if (status)
952 return 0;
953 else
954 return -1;
955}
956
957/* issue a mailbox command on the MQ */
958static int ocrdma_mbx_cmd(struct ocrdma_dev *dev, struct ocrdma_mqe *mqe)
959{
960 int status = 0;
961 u16 cqe_status, ext_status;
962 struct ocrdma_mqe *rsp;
963
964 mutex_lock(&dev->mqe_ctx.lock);
965 ocrdma_post_mqe(dev, mqe);
966 status = ocrdma_wait_mqe_cmpl(dev);
967 if (status)
968 goto mbx_err;
969 cqe_status = dev->mqe_ctx.cqe_status;
970 ext_status = dev->mqe_ctx.ext_status;
971 rsp = ocrdma_get_mqe_rsp(dev);
972 ocrdma_copy_le32_to_cpu(mqe, rsp, (sizeof(*mqe)));
973 if (cqe_status || ext_status) {
974 ocrdma_err
975 ("%s() opcode=0x%x, cqe_status=0x%x, ext_status=0x%x\n",
976 __func__,
977 (rsp->u.rsp.subsys_op & OCRDMA_MBX_RSP_OPCODE_MASK) >>
978 OCRDMA_MBX_RSP_OPCODE_SHIFT, cqe_status, ext_status);
979 status = ocrdma_get_mbx_cqe_errno(cqe_status);
980 goto mbx_err;
981 }
982 if (mqe->u.rsp.status & OCRDMA_MBX_RSP_STATUS_MASK)
983 status = ocrdma_get_mbx_errno(mqe->u.rsp.status);
984mbx_err:
985 mutex_unlock(&dev->mqe_ctx.lock);
986 return status;
987}
988
989static void ocrdma_get_attr(struct ocrdma_dev *dev,
990 struct ocrdma_dev_attr *attr,
991 struct ocrdma_mbx_query_config *rsp)
992{
993 int max_q_mem;
994
995 attr->max_pd =
996 (rsp->max_pd_ca_ack_delay & OCRDMA_MBX_QUERY_CFG_MAX_PD_MASK) >>
997 OCRDMA_MBX_QUERY_CFG_MAX_PD_SHIFT;
998 attr->max_qp =
999 (rsp->qp_srq_cq_ird_ord & OCRDMA_MBX_QUERY_CFG_MAX_QP_MASK) >>
1000 OCRDMA_MBX_QUERY_CFG_MAX_QP_SHIFT;
1001 attr->max_send_sge = ((rsp->max_write_send_sge &
1002 OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_MASK) >>
1003 OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_SHIFT);
1004 attr->max_recv_sge = (rsp->max_write_send_sge &
1005 OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_MASK) >>
1006 OCRDMA_MBX_QUERY_CFG_MAX_SEND_SGE_SHIFT;
1007 attr->max_ord_per_qp = (rsp->max_ird_ord_per_qp &
1008 OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_MASK) >>
1009 OCRDMA_MBX_QUERY_CFG_MAX_ORD_PER_QP_SHIFT;
1010 attr->max_ird_per_qp = (rsp->max_ird_ord_per_qp &
1011 OCRDMA_MBX_QUERY_CFG_MAX_IRD_PER_QP_MASK) >>
1012 OCRDMA_MBX_QUERY_CFG_MAX_IRD_PER_QP_SHIFT;
1013 attr->cq_overflow_detect = (rsp->qp_srq_cq_ird_ord &
1014 OCRDMA_MBX_QUERY_CFG_CQ_OVERFLOW_MASK) >>
1015 OCRDMA_MBX_QUERY_CFG_CQ_OVERFLOW_SHIFT;
1016 attr->srq_supported = (rsp->qp_srq_cq_ird_ord &
1017 OCRDMA_MBX_QUERY_CFG_SRQ_SUPPORTED_MASK) >>
1018 OCRDMA_MBX_QUERY_CFG_SRQ_SUPPORTED_SHIFT;
1019 attr->local_ca_ack_delay = (rsp->max_pd_ca_ack_delay &
1020 OCRDMA_MBX_QUERY_CFG_CA_ACK_DELAY_MASK) >>
1021 OCRDMA_MBX_QUERY_CFG_CA_ACK_DELAY_SHIFT;
1022 attr->max_mr = rsp->max_mr;
1023 attr->max_mr_size = ~0ull;
1024 attr->max_fmr = 0;
1025 attr->max_pages_per_frmr = rsp->max_pages_per_frmr;
1026 attr->max_num_mr_pbl = rsp->max_num_mr_pbl;
1027 attr->max_cqe = rsp->max_cq_cqes_per_cq &
1028 OCRDMA_MBX_QUERY_CFG_MAX_CQES_PER_CQ_MASK;
1029 attr->wqe_size = ((rsp->wqe_rqe_stride_max_dpp_cqs &
1030 OCRDMA_MBX_QUERY_CFG_MAX_WQE_SIZE_MASK) >>
1031 OCRDMA_MBX_QUERY_CFG_MAX_WQE_SIZE_OFFSET) *
1032 OCRDMA_WQE_STRIDE;
1033 attr->rqe_size = ((rsp->wqe_rqe_stride_max_dpp_cqs &
1034 OCRDMA_MBX_QUERY_CFG_MAX_RQE_SIZE_MASK) >>
1035 OCRDMA_MBX_QUERY_CFG_MAX_RQE_SIZE_OFFSET) *
1036 OCRDMA_WQE_STRIDE;
1037 attr->max_inline_data =
1038 attr->wqe_size - (sizeof(struct ocrdma_hdr_wqe) +
1039 sizeof(struct ocrdma_sge));
1040 max_q_mem = OCRDMA_Q_PAGE_BASE_SIZE << (OCRDMA_MAX_Q_PAGE_SIZE_CNT - 1);
1041 /* hw can queue one less then the configured size,
1042 * so publish less by one to stack.
1043 */
1044 if (dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY) {
1045 dev->attr.max_wqe = max_q_mem / dev->attr.wqe_size;
1046 attr->ird = 1;
1047 attr->ird_page_size = OCRDMA_MIN_Q_PAGE_SIZE;
1048 attr->num_ird_pages = MAX_OCRDMA_IRD_PAGES;
1049 } else
1050 dev->attr.max_wqe = (max_q_mem / dev->attr.wqe_size) - 1;
1051 dev->attr.max_rqe = (max_q_mem / dev->attr.rqe_size) - 1;
1052}
1053
1054static int ocrdma_check_fw_config(struct ocrdma_dev *dev,
1055 struct ocrdma_fw_conf_rsp *conf)
1056{
1057 u32 fn_mode;
1058
1059 fn_mode = conf->fn_mode & OCRDMA_FN_MODE_RDMA;
1060 if (fn_mode != OCRDMA_FN_MODE_RDMA)
1061 return -EINVAL;
1062 dev->base_eqid = conf->base_eqid;
1063 dev->max_eq = conf->max_eq;
1064 dev->attr.max_cq = OCRDMA_MAX_CQ - 1;
1065 return 0;
1066}
1067
1068/* can be issued only during init time. */
1069static int ocrdma_mbx_query_fw_ver(struct ocrdma_dev *dev)
1070{
1071 int status = -ENOMEM;
1072 struct ocrdma_mqe *cmd;
1073 struct ocrdma_fw_ver_rsp *rsp;
1074
1075 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_GET_FW_VER, sizeof(*cmd));
1076 if (!cmd)
1077 return -ENOMEM;
1078 ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0],
1079 OCRDMA_CMD_GET_FW_VER,
1080 OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1081
1082 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1083 if (status)
1084 goto mbx_err;
1085 rsp = (struct ocrdma_fw_ver_rsp *)cmd;
1086 memset(&dev->attr.fw_ver[0], 0, sizeof(dev->attr.fw_ver));
1087 memcpy(&dev->attr.fw_ver[0], &rsp->running_ver[0],
1088 sizeof(rsp->running_ver));
1089 ocrdma_le32_to_cpu(dev->attr.fw_ver, sizeof(rsp->running_ver));
1090mbx_err:
1091 kfree(cmd);
1092 return status;
1093}
1094
1095/* can be issued only during init time. */
1096static int ocrdma_mbx_query_fw_config(struct ocrdma_dev *dev)
1097{
1098 int status = -ENOMEM;
1099 struct ocrdma_mqe *cmd;
1100 struct ocrdma_fw_conf_rsp *rsp;
1101
1102 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_GET_FW_CONFIG, sizeof(*cmd));
1103 if (!cmd)
1104 return -ENOMEM;
1105 ocrdma_init_mch((struct ocrdma_mbx_hdr *)&cmd->u.cmd[0],
1106 OCRDMA_CMD_GET_FW_CONFIG,
1107 OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1108 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1109 if (status)
1110 goto mbx_err;
1111 rsp = (struct ocrdma_fw_conf_rsp *)cmd;
1112 status = ocrdma_check_fw_config(dev, rsp);
1113mbx_err:
1114 kfree(cmd);
1115 return status;
1116}
1117
1118static int ocrdma_mbx_query_dev(struct ocrdma_dev *dev)
1119{
1120 int status = -ENOMEM;
1121 struct ocrdma_mbx_query_config *rsp;
1122 struct ocrdma_mqe *cmd;
1123
1124 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_CONFIG, sizeof(*cmd));
1125 if (!cmd)
1126 return status;
1127 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1128 if (status)
1129 goto mbx_err;
1130 rsp = (struct ocrdma_mbx_query_config *)cmd;
1131 ocrdma_get_attr(dev, &dev->attr, rsp);
1132mbx_err:
1133 kfree(cmd);
1134 return status;
1135}
1136
1137int ocrdma_mbx_alloc_pd(struct ocrdma_dev *dev, struct ocrdma_pd *pd)
1138{
1139 int status = -ENOMEM;
1140 struct ocrdma_alloc_pd *cmd;
1141 struct ocrdma_alloc_pd_rsp *rsp;
1142
1143 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_PD, sizeof(*cmd));
1144 if (!cmd)
1145 return status;
1146 if (pd->dpp_enabled)
1147 cmd->enable_dpp_rsvd |= OCRDMA_ALLOC_PD_ENABLE_DPP;
1148 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1149 if (status)
1150 goto mbx_err;
1151 rsp = (struct ocrdma_alloc_pd_rsp *)cmd;
1152 pd->id = rsp->dpp_page_pdid & OCRDMA_ALLOC_PD_RSP_PDID_MASK;
1153 if (rsp->dpp_page_pdid & OCRDMA_ALLOC_PD_RSP_DPP) {
1154 pd->dpp_enabled = true;
1155 pd->dpp_page = rsp->dpp_page_pdid >>
1156 OCRDMA_ALLOC_PD_RSP_DPP_PAGE_SHIFT;
1157 } else {
1158 pd->dpp_enabled = false;
1159 pd->num_dpp_qp = 0;
1160 }
1161mbx_err:
1162 kfree(cmd);
1163 return status;
1164}
1165
1166int ocrdma_mbx_dealloc_pd(struct ocrdma_dev *dev, struct ocrdma_pd *pd)
1167{
1168 int status = -ENOMEM;
1169 struct ocrdma_dealloc_pd *cmd;
1170
1171 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_PD, sizeof(*cmd));
1172 if (!cmd)
1173 return status;
1174 cmd->id = pd->id;
1175 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1176 kfree(cmd);
1177 return status;
1178}
1179
1180static int ocrdma_build_q_conf(u32 *num_entries, int entry_size,
1181 int *num_pages, int *page_size)
1182{
1183 int i;
1184 int mem_size;
1185
1186 *num_entries = roundup_pow_of_two(*num_entries);
1187 mem_size = *num_entries * entry_size;
1188 /* find the possible lowest possible multiplier */
1189 for (i = 0; i < OCRDMA_MAX_Q_PAGE_SIZE_CNT; i++) {
1190 if (mem_size <= (OCRDMA_Q_PAGE_BASE_SIZE << i))
1191 break;
1192 }
1193 if (i >= OCRDMA_MAX_Q_PAGE_SIZE_CNT)
1194 return -EINVAL;
1195 mem_size = roundup(mem_size,
1196 ((OCRDMA_Q_PAGE_BASE_SIZE << i) / OCRDMA_MAX_Q_PAGES));
1197 *num_pages =
1198 mem_size / ((OCRDMA_Q_PAGE_BASE_SIZE << i) / OCRDMA_MAX_Q_PAGES);
1199 *page_size = ((OCRDMA_Q_PAGE_BASE_SIZE << i) / OCRDMA_MAX_Q_PAGES);
1200 *num_entries = mem_size / entry_size;
1201 return 0;
1202}
1203
1204static int ocrdma_mbx_create_ah_tbl(struct ocrdma_dev *dev)
1205{
1206 int i ;
1207 int status = 0;
1208 int max_ah;
1209 struct ocrdma_create_ah_tbl *cmd;
1210 struct ocrdma_create_ah_tbl_rsp *rsp;
1211 struct pci_dev *pdev = dev->nic_info.pdev;
1212 dma_addr_t pa;
1213 struct ocrdma_pbe *pbes;
1214
1215 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_AH_TBL, sizeof(*cmd));
1216 if (!cmd)
1217 return status;
1218
1219 max_ah = OCRDMA_MAX_AH;
1220 dev->av_tbl.size = sizeof(struct ocrdma_av) * max_ah;
1221
1222 /* number of PBEs in PBL */
1223 cmd->ah_conf = (OCRDMA_AH_TBL_PAGES <<
1224 OCRDMA_CREATE_AH_NUM_PAGES_SHIFT) &
1225 OCRDMA_CREATE_AH_NUM_PAGES_MASK;
1226
1227 /* page size */
1228 for (i = 0; i < OCRDMA_MAX_Q_PAGE_SIZE_CNT; i++) {
1229 if (PAGE_SIZE == (OCRDMA_MIN_Q_PAGE_SIZE << i))
1230 break;
1231 }
1232 cmd->ah_conf |= (i << OCRDMA_CREATE_AH_PAGE_SIZE_SHIFT) &
1233 OCRDMA_CREATE_AH_PAGE_SIZE_MASK;
1234
1235 /* ah_entry size */
1236 cmd->ah_conf |= (sizeof(struct ocrdma_av) <<
1237 OCRDMA_CREATE_AH_ENTRY_SIZE_SHIFT) &
1238 OCRDMA_CREATE_AH_ENTRY_SIZE_MASK;
1239
1240 dev->av_tbl.pbl.va = dma_alloc_coherent(&pdev->dev, PAGE_SIZE,
1241 &dev->av_tbl.pbl.pa,
1242 GFP_KERNEL);
1243 if (dev->av_tbl.pbl.va == NULL)
1244 goto mem_err;
1245
1246 dev->av_tbl.va = dma_alloc_coherent(&pdev->dev, dev->av_tbl.size,
1247 &pa, GFP_KERNEL);
1248 if (dev->av_tbl.va == NULL)
1249 goto mem_err_ah;
1250 dev->av_tbl.pa = pa;
1251 dev->av_tbl.num_ah = max_ah;
1252 memset(dev->av_tbl.va, 0, dev->av_tbl.size);
1253
1254 pbes = (struct ocrdma_pbe *)dev->av_tbl.pbl.va;
1255 for (i = 0; i < dev->av_tbl.size / OCRDMA_MIN_Q_PAGE_SIZE; i++) {
1256 pbes[i].pa_lo = (u32) (pa & 0xffffffff);
1257 pbes[i].pa_hi = (u32) upper_32_bits(pa);
1258 pa += PAGE_SIZE;
1259 }
1260 cmd->tbl_addr[0].lo = (u32)(dev->av_tbl.pbl.pa & 0xFFFFFFFF);
1261 cmd->tbl_addr[0].hi = (u32)upper_32_bits(dev->av_tbl.pbl.pa);
1262 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1263 if (status)
1264 goto mbx_err;
1265 rsp = (struct ocrdma_create_ah_tbl_rsp *)cmd;
1266 dev->av_tbl.ahid = rsp->ahid & 0xFFFF;
1267 kfree(cmd);
1268 return 0;
1269
1270mbx_err:
1271 dma_free_coherent(&pdev->dev, dev->av_tbl.size, dev->av_tbl.va,
1272 dev->av_tbl.pa);
1273 dev->av_tbl.va = NULL;
1274mem_err_ah:
1275 dma_free_coherent(&pdev->dev, PAGE_SIZE, dev->av_tbl.pbl.va,
1276 dev->av_tbl.pbl.pa);
1277 dev->av_tbl.pbl.va = NULL;
1278 dev->av_tbl.size = 0;
1279mem_err:
1280 kfree(cmd);
1281 return status;
1282}
1283
1284static void ocrdma_mbx_delete_ah_tbl(struct ocrdma_dev *dev)
1285{
1286 struct ocrdma_delete_ah_tbl *cmd;
1287 struct pci_dev *pdev = dev->nic_info.pdev;
1288
1289 if (dev->av_tbl.va == NULL)
1290 return;
1291
1292 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_AH_TBL, sizeof(*cmd));
1293 if (!cmd)
1294 return;
1295 cmd->ahid = dev->av_tbl.ahid;
1296
1297 ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1298 dma_free_coherent(&pdev->dev, dev->av_tbl.size, dev->av_tbl.va,
1299 dev->av_tbl.pa);
1300 dma_free_coherent(&pdev->dev, PAGE_SIZE, dev->av_tbl.pbl.va,
1301 dev->av_tbl.pbl.pa);
1302 kfree(cmd);
1303}
1304
1305/* Multiple CQs uses the EQ. This routine returns least used
1306 * EQ to associate with CQ. This will distributes the interrupt
1307 * processing and CPU load to associated EQ, vector and so to that CPU.
1308 */
1309static u16 ocrdma_bind_eq(struct ocrdma_dev *dev)
1310{
1311 int i, selected_eq = 0, cq_cnt = 0;
1312 u16 eq_id;
1313
1314 mutex_lock(&dev->dev_lock);
1315 cq_cnt = dev->qp_eq_tbl[0].cq_cnt;
1316 eq_id = dev->qp_eq_tbl[0].q.id;
1317 /* find the EQ which is has the least number of
1318 * CQs associated with it.
1319 */
1320 for (i = 0; i < dev->eq_cnt; i++) {
1321 if (dev->qp_eq_tbl[i].cq_cnt < cq_cnt) {
1322 cq_cnt = dev->qp_eq_tbl[i].cq_cnt;
1323 eq_id = dev->qp_eq_tbl[i].q.id;
1324 selected_eq = i;
1325 }
1326 }
1327 dev->qp_eq_tbl[selected_eq].cq_cnt += 1;
1328 mutex_unlock(&dev->dev_lock);
1329 return eq_id;
1330}
1331
1332static void ocrdma_unbind_eq(struct ocrdma_dev *dev, u16 eq_id)
1333{
1334 int i;
1335
1336 mutex_lock(&dev->dev_lock);
1337 for (i = 0; i < dev->eq_cnt; i++) {
1338 if (dev->qp_eq_tbl[i].q.id != eq_id)
1339 continue;
1340 dev->qp_eq_tbl[i].cq_cnt -= 1;
1341 break;
1342 }
1343 mutex_unlock(&dev->dev_lock);
1344}
1345
1346int ocrdma_mbx_create_cq(struct ocrdma_dev *dev, struct ocrdma_cq *cq,
1347 int entries, int dpp_cq)
1348{
1349 int status = -ENOMEM; int max_hw_cqe;
1350 struct pci_dev *pdev = dev->nic_info.pdev;
1351 struct ocrdma_create_cq *cmd;
1352 struct ocrdma_create_cq_rsp *rsp;
1353 u32 hw_pages, cqe_size, page_size, cqe_count;
1354
1355 if (dpp_cq)
1356 return -EINVAL;
1357 if (entries > dev->attr.max_cqe) {
1358 ocrdma_err("%s(%d) max_cqe=0x%x, requester_cqe=0x%x\n",
1359 __func__, dev->id, dev->attr.max_cqe, entries);
1360 return -EINVAL;
1361 }
1362 if (dpp_cq && (dev->nic_info.dev_family != OCRDMA_GEN2_FAMILY))
1363 return -EINVAL;
1364
1365 if (dpp_cq) {
1366 cq->max_hw_cqe = 1;
1367 max_hw_cqe = 1;
1368 cqe_size = OCRDMA_DPP_CQE_SIZE;
1369 hw_pages = 1;
1370 } else {
1371 cq->max_hw_cqe = dev->attr.max_cqe;
1372 max_hw_cqe = dev->attr.max_cqe;
1373 cqe_size = sizeof(struct ocrdma_cqe);
1374 hw_pages = OCRDMA_CREATE_CQ_MAX_PAGES;
1375 }
1376
1377 cq->len = roundup(max_hw_cqe * cqe_size, OCRDMA_MIN_Q_PAGE_SIZE);
1378
1379 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_CQ, sizeof(*cmd));
1380 if (!cmd)
1381 return -ENOMEM;
1382 ocrdma_init_mch(&cmd->cmd.req, OCRDMA_CMD_CREATE_CQ,
1383 OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1384 cq->va = dma_alloc_coherent(&pdev->dev, cq->len, &cq->pa, GFP_KERNEL);
1385 if (!cq->va) {
1386 status = -ENOMEM;
1387 goto mem_err;
1388 }
1389 memset(cq->va, 0, cq->len);
1390 page_size = cq->len / hw_pages;
1391 cmd->cmd.pgsz_pgcnt = (page_size / OCRDMA_MIN_Q_PAGE_SIZE) <<
1392 OCRDMA_CREATE_CQ_PAGE_SIZE_SHIFT;
1393 cmd->cmd.pgsz_pgcnt |= hw_pages;
1394 cmd->cmd.ev_cnt_flags = OCRDMA_CREATE_CQ_DEF_FLAGS;
1395
1396 if (dev->eq_cnt < 0)
1397 goto eq_err;
1398 cq->eqn = ocrdma_bind_eq(dev);
1399 cmd->cmd.req.rsvd_version = OCRDMA_CREATE_CQ_VER2;
1400 cqe_count = cq->len / cqe_size;
1401 if (cqe_count > 1024)
1402 /* Set cnt to 3 to indicate more than 1024 cq entries */
1403 cmd->cmd.ev_cnt_flags |= (0x3 << OCRDMA_CREATE_CQ_CNT_SHIFT);
1404 else {
1405 u8 count = 0;
1406 switch (cqe_count) {
1407 case 256:
1408 count = 0;
1409 break;
1410 case 512:
1411 count = 1;
1412 break;
1413 case 1024:
1414 count = 2;
1415 break;
1416 default:
1417 goto mbx_err;
1418 }
1419 cmd->cmd.ev_cnt_flags |= (count << OCRDMA_CREATE_CQ_CNT_SHIFT);
1420 }
1421 /* shared eq between all the consumer cqs. */
1422 cmd->cmd.eqn = cq->eqn;
1423 if (dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY) {
1424 if (dpp_cq)
1425 cmd->cmd.pgsz_pgcnt |= OCRDMA_CREATE_CQ_DPP <<
1426 OCRDMA_CREATE_CQ_TYPE_SHIFT;
1427 cq->phase_change = false;
1428 cmd->cmd.cqe_count = (cq->len / cqe_size);
1429 } else {
1430 cmd->cmd.cqe_count = (cq->len / cqe_size) - 1;
1431 cmd->cmd.ev_cnt_flags |= OCRDMA_CREATE_CQ_FLAGS_AUTO_VALID;
1432 cq->phase_change = true;
1433 }
1434
1435 ocrdma_build_q_pages(&cmd->cmd.pa[0], hw_pages, cq->pa, page_size);
1436 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1437 if (status)
1438 goto mbx_err;
1439
1440 rsp = (struct ocrdma_create_cq_rsp *)cmd;
1441 cq->id = (u16) (rsp->rsp.cq_id & OCRDMA_CREATE_CQ_RSP_CQ_ID_MASK);
1442 kfree(cmd);
1443 return 0;
1444mbx_err:
1445 ocrdma_unbind_eq(dev, cq->eqn);
1446eq_err:
1447 dma_free_coherent(&pdev->dev, cq->len, cq->va, cq->pa);
1448mem_err:
1449 kfree(cmd);
1450 return status;
1451}
1452
1453int ocrdma_mbx_destroy_cq(struct ocrdma_dev *dev, struct ocrdma_cq *cq)
1454{
1455 int status = -ENOMEM;
1456 struct ocrdma_destroy_cq *cmd;
1457
1458 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_CQ, sizeof(*cmd));
1459 if (!cmd)
1460 return status;
1461 ocrdma_init_mch(&cmd->req, OCRDMA_CMD_DELETE_CQ,
1462 OCRDMA_SUBSYS_COMMON, sizeof(*cmd));
1463
1464 cmd->bypass_flush_qid |=
1465 (cq->id << OCRDMA_DESTROY_CQ_QID_SHIFT) &
1466 OCRDMA_DESTROY_CQ_QID_MASK;
1467
1468 ocrdma_unbind_eq(dev, cq->eqn);
1469 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1470 if (status)
1471 goto mbx_err;
1472 dma_free_coherent(&dev->nic_info.pdev->dev, cq->len, cq->va, cq->pa);
1473mbx_err:
1474 kfree(cmd);
1475 return status;
1476}
1477
1478int ocrdma_mbx_alloc_lkey(struct ocrdma_dev *dev, struct ocrdma_hw_mr *hwmr,
1479 u32 pdid, int addr_check)
1480{
1481 int status = -ENOMEM;
1482 struct ocrdma_alloc_lkey *cmd;
1483 struct ocrdma_alloc_lkey_rsp *rsp;
1484
1485 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_ALLOC_LKEY, sizeof(*cmd));
1486 if (!cmd)
1487 return status;
1488 cmd->pdid = pdid;
1489 cmd->pbl_sz_flags |= addr_check;
1490 cmd->pbl_sz_flags |= (hwmr->fr_mr << OCRDMA_ALLOC_LKEY_FMR_SHIFT);
1491 cmd->pbl_sz_flags |=
1492 (hwmr->remote_wr << OCRDMA_ALLOC_LKEY_REMOTE_WR_SHIFT);
1493 cmd->pbl_sz_flags |=
1494 (hwmr->remote_rd << OCRDMA_ALLOC_LKEY_REMOTE_RD_SHIFT);
1495 cmd->pbl_sz_flags |=
1496 (hwmr->local_wr << OCRDMA_ALLOC_LKEY_LOCAL_WR_SHIFT);
1497 cmd->pbl_sz_flags |=
1498 (hwmr->remote_atomic << OCRDMA_ALLOC_LKEY_REMOTE_ATOMIC_SHIFT);
1499 cmd->pbl_sz_flags |=
1500 (hwmr->num_pbls << OCRDMA_ALLOC_LKEY_PBL_SIZE_SHIFT);
1501
1502 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1503 if (status)
1504 goto mbx_err;
1505 rsp = (struct ocrdma_alloc_lkey_rsp *)cmd;
1506 hwmr->lkey = rsp->lrkey;
1507mbx_err:
1508 kfree(cmd);
1509 return status;
1510}
1511
1512int ocrdma_mbx_dealloc_lkey(struct ocrdma_dev *dev, int fr_mr, u32 lkey)
1513{
1514 int status = -ENOMEM;
1515 struct ocrdma_dealloc_lkey *cmd;
1516
1517 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DEALLOC_LKEY, sizeof(*cmd));
1518 if (!cmd)
1519 return -ENOMEM;
1520 cmd->lkey = lkey;
1521 cmd->rsvd_frmr = fr_mr ? 1 : 0;
1522 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1523 if (status)
1524 goto mbx_err;
1525mbx_err:
1526 kfree(cmd);
1527 return status;
1528}
1529
1530static int ocrdma_mbx_reg_mr(struct ocrdma_dev *dev, struct ocrdma_hw_mr *hwmr,
1531 u32 pdid, u32 pbl_cnt, u32 pbe_size, u32 last)
1532{
1533 int status = -ENOMEM;
1534 int i;
1535 struct ocrdma_reg_nsmr *cmd;
1536 struct ocrdma_reg_nsmr_rsp *rsp;
1537
1538 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_REGISTER_NSMR, sizeof(*cmd));
1539 if (!cmd)
1540 return -ENOMEM;
1541 cmd->num_pbl_pdid =
1542 pdid | (hwmr->num_pbls << OCRDMA_REG_NSMR_NUM_PBL_SHIFT);
1543
1544 cmd->flags_hpage_pbe_sz |= (hwmr->remote_wr <<
1545 OCRDMA_REG_NSMR_REMOTE_WR_SHIFT);
1546 cmd->flags_hpage_pbe_sz |= (hwmr->remote_rd <<
1547 OCRDMA_REG_NSMR_REMOTE_RD_SHIFT);
1548 cmd->flags_hpage_pbe_sz |= (hwmr->local_wr <<
1549 OCRDMA_REG_NSMR_LOCAL_WR_SHIFT);
1550 cmd->flags_hpage_pbe_sz |= (hwmr->remote_atomic <<
1551 OCRDMA_REG_NSMR_REMOTE_ATOMIC_SHIFT);
1552 cmd->flags_hpage_pbe_sz |= (hwmr->mw_bind <<
1553 OCRDMA_REG_NSMR_BIND_MEMWIN_SHIFT);
1554 cmd->flags_hpage_pbe_sz |= (last << OCRDMA_REG_NSMR_LAST_SHIFT);
1555
1556 cmd->flags_hpage_pbe_sz |= (hwmr->pbe_size / OCRDMA_MIN_HPAGE_SIZE);
1557 cmd->flags_hpage_pbe_sz |= (hwmr->pbl_size / OCRDMA_MIN_HPAGE_SIZE) <<
1558 OCRDMA_REG_NSMR_HPAGE_SIZE_SHIFT;
1559 cmd->totlen_low = hwmr->len;
1560 cmd->totlen_high = upper_32_bits(hwmr->len);
1561 cmd->fbo_low = (u32) (hwmr->fbo & 0xffffffff);
1562 cmd->fbo_high = (u32) upper_32_bits(hwmr->fbo);
1563 cmd->va_loaddr = (u32) hwmr->va;
1564 cmd->va_hiaddr = (u32) upper_32_bits(hwmr->va);
1565
1566 for (i = 0; i < pbl_cnt; i++) {
1567 cmd->pbl[i].lo = (u32) (hwmr->pbl_table[i].pa & 0xffffffff);
1568 cmd->pbl[i].hi = upper_32_bits(hwmr->pbl_table[i].pa);
1569 }
1570 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1571 if (status)
1572 goto mbx_err;
1573 rsp = (struct ocrdma_reg_nsmr_rsp *)cmd;
1574 hwmr->lkey = rsp->lrkey;
1575mbx_err:
1576 kfree(cmd);
1577 return status;
1578}
1579
1580static int ocrdma_mbx_reg_mr_cont(struct ocrdma_dev *dev,
1581 struct ocrdma_hw_mr *hwmr, u32 pbl_cnt,
1582 u32 pbl_offset, u32 last)
1583{
1584 int status = -ENOMEM;
1585 int i;
1586 struct ocrdma_reg_nsmr_cont *cmd;
1587
1588 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_REGISTER_NSMR_CONT, sizeof(*cmd));
1589 if (!cmd)
1590 return -ENOMEM;
1591 cmd->lrkey = hwmr->lkey;
1592 cmd->num_pbl_offset = (pbl_cnt << OCRDMA_REG_NSMR_CONT_NUM_PBL_SHIFT) |
1593 (pbl_offset & OCRDMA_REG_NSMR_CONT_PBL_SHIFT_MASK);
1594 cmd->last = last << OCRDMA_REG_NSMR_CONT_LAST_SHIFT;
1595
1596 for (i = 0; i < pbl_cnt; i++) {
1597 cmd->pbl[i].lo =
1598 (u32) (hwmr->pbl_table[i + pbl_offset].pa & 0xffffffff);
1599 cmd->pbl[i].hi =
1600 upper_32_bits(hwmr->pbl_table[i + pbl_offset].pa);
1601 }
1602 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
1603 if (status)
1604 goto mbx_err;
1605mbx_err:
1606 kfree(cmd);
1607 return status;
1608}
1609
1610int ocrdma_reg_mr(struct ocrdma_dev *dev,
1611 struct ocrdma_hw_mr *hwmr, u32 pdid, int acc)
1612{
1613 int status;
1614 u32 last = 0;
1615 u32 cur_pbl_cnt, pbl_offset;
1616 u32 pending_pbl_cnt = hwmr->num_pbls;
1617
1618 pbl_offset = 0;
1619 cur_pbl_cnt = min(pending_pbl_cnt, MAX_OCRDMA_NSMR_PBL);
1620 if (cur_pbl_cnt == pending_pbl_cnt)
1621 last = 1;
1622
1623 status = ocrdma_mbx_reg_mr(dev, hwmr, pdid,
1624 cur_pbl_cnt, hwmr->pbe_size, last);
1625 if (status) {
1626 ocrdma_err("%s() status=%d\n", __func__, status);
1627 return status;
1628 }
1629 /* if there is no more pbls to register then exit. */
1630 if (last)
1631 return 0;
1632
1633 while (!last) {
1634 pbl_offset += cur_pbl_cnt;
1635 pending_pbl_cnt -= cur_pbl_cnt;
1636 cur_pbl_cnt = min(pending_pbl_cnt, MAX_OCRDMA_NSMR_PBL);
1637 /* if we reach the end of the pbls, then need to set the last
1638 * bit, indicating no more pbls to register for this memory key.
1639 */
1640 if (cur_pbl_cnt == pending_pbl_cnt)
1641 last = 1;
1642
1643 status = ocrdma_mbx_reg_mr_cont(dev, hwmr, cur_pbl_cnt,
1644 pbl_offset, last);
1645 if (status)
1646 break;
1647 }
1648 if (status)
1649 ocrdma_err("%s() err. status=%d\n", __func__, status);
1650
1651 return status;
1652}
1653
1654bool ocrdma_is_qp_in_sq_flushlist(struct ocrdma_cq *cq, struct ocrdma_qp *qp)
1655{
1656 struct ocrdma_qp *tmp;
1657 bool found = false;
1658 list_for_each_entry(tmp, &cq->sq_head, sq_entry) {
1659 if (qp == tmp) {
1660 found = true;
1661 break;
1662 }
1663 }
1664 return found;
1665}
1666
1667bool ocrdma_is_qp_in_rq_flushlist(struct ocrdma_cq *cq, struct ocrdma_qp *qp)
1668{
1669 struct ocrdma_qp *tmp;
1670 bool found = false;
1671 list_for_each_entry(tmp, &cq->rq_head, rq_entry) {
1672 if (qp == tmp) {
1673 found = true;
1674 break;
1675 }
1676 }
1677 return found;
1678}
1679
1680void ocrdma_flush_qp(struct ocrdma_qp *qp)
1681{
1682 bool found;
1683 unsigned long flags;
1684
1685 spin_lock_irqsave(&qp->dev->flush_q_lock, flags);
1686 found = ocrdma_is_qp_in_sq_flushlist(qp->sq_cq, qp);
1687 if (!found)
1688 list_add_tail(&qp->sq_entry, &qp->sq_cq->sq_head);
1689 if (!qp->srq) {
1690 found = ocrdma_is_qp_in_rq_flushlist(qp->rq_cq, qp);
1691 if (!found)
1692 list_add_tail(&qp->rq_entry, &qp->rq_cq->rq_head);
1693 }
1694 spin_unlock_irqrestore(&qp->dev->flush_q_lock, flags);
1695}
1696
1697int ocrdma_qp_state_machine(struct ocrdma_qp *qp, enum ib_qp_state new_ib_state,
1698 enum ib_qp_state *old_ib_state)
1699{
1700 unsigned long flags;
1701 int status = 0;
1702 enum ocrdma_qp_state new_state;
1703 new_state = get_ocrdma_qp_state(new_ib_state);
1704
1705 /* sync with wqe and rqe posting */
1706 spin_lock_irqsave(&qp->q_lock, flags);
1707
1708 if (old_ib_state)
1709 *old_ib_state = get_ibqp_state(qp->state);
1710 if (new_state == qp->state) {
1711 spin_unlock_irqrestore(&qp->q_lock, flags);
1712 return 1;
1713 }
1714
1715 switch (qp->state) {
1716 case OCRDMA_QPS_RST:
1717 switch (new_state) {
1718 case OCRDMA_QPS_RST:
1719 case OCRDMA_QPS_INIT:
1720 break;
1721 default:
1722 status = -EINVAL;
1723 break;
1724 };
1725 break;
1726 case OCRDMA_QPS_INIT:
1727 /* qps: INIT->XXX */
1728 switch (new_state) {
1729 case OCRDMA_QPS_INIT:
1730 case OCRDMA_QPS_RTR:
1731 break;
1732 case OCRDMA_QPS_ERR:
1733 ocrdma_flush_qp(qp);
1734 break;
1735 default:
1736 status = -EINVAL;
1737 break;
1738 };
1739 break;
1740 case OCRDMA_QPS_RTR:
1741 /* qps: RTS->XXX */
1742 switch (new_state) {
1743 case OCRDMA_QPS_RTS:
1744 break;
1745 case OCRDMA_QPS_ERR:
1746 ocrdma_flush_qp(qp);
1747 break;
1748 default:
1749 status = -EINVAL;
1750 break;
1751 };
1752 break;
1753 case OCRDMA_QPS_RTS:
1754 /* qps: RTS->XXX */
1755 switch (new_state) {
1756 case OCRDMA_QPS_SQD:
1757 case OCRDMA_QPS_SQE:
1758 break;
1759 case OCRDMA_QPS_ERR:
1760 ocrdma_flush_qp(qp);
1761 break;
1762 default:
1763 status = -EINVAL;
1764 break;
1765 };
1766 break;
1767 case OCRDMA_QPS_SQD:
1768 /* qps: SQD->XXX */
1769 switch (new_state) {
1770 case OCRDMA_QPS_RTS:
1771 case OCRDMA_QPS_SQE:
1772 case OCRDMA_QPS_ERR:
1773 break;
1774 default:
1775 status = -EINVAL;
1776 break;
1777 };
1778 break;
1779 case OCRDMA_QPS_SQE:
1780 switch (new_state) {
1781 case OCRDMA_QPS_RTS:
1782 case OCRDMA_QPS_ERR:
1783 break;
1784 default:
1785 status = -EINVAL;
1786 break;
1787 };
1788 break;
1789 case OCRDMA_QPS_ERR:
1790 /* qps: ERR->XXX */
1791 switch (new_state) {
1792 case OCRDMA_QPS_RST:
1793 break;
1794 default:
1795 status = -EINVAL;
1796 break;
1797 };
1798 break;
1799 default:
1800 status = -EINVAL;
1801 break;
1802 };
1803 if (!status)
1804 qp->state = new_state;
1805
1806 spin_unlock_irqrestore(&qp->q_lock, flags);
1807 return status;
1808}
1809
1810static u32 ocrdma_set_create_qp_mbx_access_flags(struct ocrdma_qp *qp)
1811{
1812 u32 flags = 0;
1813 if (qp->cap_flags & OCRDMA_QP_INB_RD)
1814 flags |= OCRDMA_CREATE_QP_REQ_INB_RDEN_MASK;
1815 if (qp->cap_flags & OCRDMA_QP_INB_WR)
1816 flags |= OCRDMA_CREATE_QP_REQ_INB_WREN_MASK;
1817 if (qp->cap_flags & OCRDMA_QP_MW_BIND)
1818 flags |= OCRDMA_CREATE_QP_REQ_BIND_MEMWIN_MASK;
1819 if (qp->cap_flags & OCRDMA_QP_LKEY0)
1820 flags |= OCRDMA_CREATE_QP_REQ_ZERO_LKEYEN_MASK;
1821 if (qp->cap_flags & OCRDMA_QP_FAST_REG)
1822 flags |= OCRDMA_CREATE_QP_REQ_FMR_EN_MASK;
1823 return flags;
1824}
1825
1826static int ocrdma_set_create_qp_sq_cmd(struct ocrdma_create_qp_req *cmd,
1827 struct ib_qp_init_attr *attrs,
1828 struct ocrdma_qp *qp)
1829{
1830 int status;
1831 u32 len, hw_pages, hw_page_size;
1832 dma_addr_t pa;
1833 struct ocrdma_dev *dev = qp->dev;
1834 struct pci_dev *pdev = dev->nic_info.pdev;
1835 u32 max_wqe_allocated;
1836 u32 max_sges = attrs->cap.max_send_sge;
1837
1838 max_wqe_allocated = attrs->cap.max_send_wr;
1839 /* need to allocate one extra to for GEN1 family */
1840 if (dev->nic_info.dev_family != OCRDMA_GEN2_FAMILY)
1841 max_wqe_allocated += 1;
1842
1843 status = ocrdma_build_q_conf(&max_wqe_allocated,
1844 dev->attr.wqe_size, &hw_pages, &hw_page_size);
1845 if (status) {
1846 ocrdma_err("%s() req. max_send_wr=0x%x\n", __func__,
1847 max_wqe_allocated);
1848 return -EINVAL;
1849 }
1850 qp->sq.max_cnt = max_wqe_allocated;
1851 len = (hw_pages * hw_page_size);
1852
1853 qp->sq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL);
1854 if (!qp->sq.va)
1855 return -EINVAL;
1856 memset(qp->sq.va, 0, len);
1857 qp->sq.len = len;
1858 qp->sq.pa = pa;
1859 qp->sq.entry_size = dev->attr.wqe_size;
1860 ocrdma_build_q_pages(&cmd->wq_addr[0], hw_pages, pa, hw_page_size);
1861
1862 cmd->type_pgsz_pdn |= (ilog2(hw_page_size / OCRDMA_MIN_Q_PAGE_SIZE)
1863 << OCRDMA_CREATE_QP_REQ_SQ_PAGE_SIZE_SHIFT);
1864 cmd->num_wq_rq_pages |= (hw_pages <<
1865 OCRDMA_CREATE_QP_REQ_NUM_WQ_PAGES_SHIFT) &
1866 OCRDMA_CREATE_QP_REQ_NUM_WQ_PAGES_MASK;
1867 cmd->max_sge_send_write |= (max_sges <<
1868 OCRDMA_CREATE_QP_REQ_MAX_SGE_SEND_SHIFT) &
1869 OCRDMA_CREATE_QP_REQ_MAX_SGE_SEND_MASK;
1870 cmd->max_sge_send_write |= (max_sges <<
1871 OCRDMA_CREATE_QP_REQ_MAX_SGE_WRITE_SHIFT) &
1872 OCRDMA_CREATE_QP_REQ_MAX_SGE_WRITE_MASK;
1873 cmd->max_wqe_rqe |= (ilog2(qp->sq.max_cnt) <<
1874 OCRDMA_CREATE_QP_REQ_MAX_WQE_SHIFT) &
1875 OCRDMA_CREATE_QP_REQ_MAX_WQE_MASK;
1876 cmd->wqe_rqe_size |= (dev->attr.wqe_size <<
1877 OCRDMA_CREATE_QP_REQ_WQE_SIZE_SHIFT) &
1878 OCRDMA_CREATE_QP_REQ_WQE_SIZE_MASK;
1879 return 0;
1880}
1881
1882static int ocrdma_set_create_qp_rq_cmd(struct ocrdma_create_qp_req *cmd,
1883 struct ib_qp_init_attr *attrs,
1884 struct ocrdma_qp *qp)
1885{
1886 int status;
1887 u32 len, hw_pages, hw_page_size;
1888 dma_addr_t pa = 0;
1889 struct ocrdma_dev *dev = qp->dev;
1890 struct pci_dev *pdev = dev->nic_info.pdev;
1891 u32 max_rqe_allocated = attrs->cap.max_recv_wr + 1;
1892
1893 status = ocrdma_build_q_conf(&max_rqe_allocated, dev->attr.rqe_size,
1894 &hw_pages, &hw_page_size);
1895 if (status) {
1896 ocrdma_err("%s() req. max_recv_wr=0x%x\n", __func__,
1897 attrs->cap.max_recv_wr + 1);
1898 return status;
1899 }
1900 qp->rq.max_cnt = max_rqe_allocated;
1901 len = (hw_pages * hw_page_size);
1902
1903 qp->rq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL);
1904 if (!qp->rq.va)
1905 return status;
1906 memset(qp->rq.va, 0, len);
1907 qp->rq.pa = pa;
1908 qp->rq.len = len;
1909 qp->rq.entry_size = dev->attr.rqe_size;
1910
1911 ocrdma_build_q_pages(&cmd->rq_addr[0], hw_pages, pa, hw_page_size);
1912 cmd->type_pgsz_pdn |= (ilog2(hw_page_size / OCRDMA_MIN_Q_PAGE_SIZE) <<
1913 OCRDMA_CREATE_QP_REQ_RQ_PAGE_SIZE_SHIFT);
1914 cmd->num_wq_rq_pages |=
1915 (hw_pages << OCRDMA_CREATE_QP_REQ_NUM_RQ_PAGES_SHIFT) &
1916 OCRDMA_CREATE_QP_REQ_NUM_RQ_PAGES_MASK;
1917 cmd->max_sge_recv_flags |= (attrs->cap.max_recv_sge <<
1918 OCRDMA_CREATE_QP_REQ_MAX_SGE_RECV_SHIFT) &
1919 OCRDMA_CREATE_QP_REQ_MAX_SGE_RECV_MASK;
1920 cmd->max_wqe_rqe |= (ilog2(qp->rq.max_cnt) <<
1921 OCRDMA_CREATE_QP_REQ_MAX_RQE_SHIFT) &
1922 OCRDMA_CREATE_QP_REQ_MAX_RQE_MASK;
1923 cmd->wqe_rqe_size |= (dev->attr.rqe_size <<
1924 OCRDMA_CREATE_QP_REQ_RQE_SIZE_SHIFT) &
1925 OCRDMA_CREATE_QP_REQ_RQE_SIZE_MASK;
1926 return 0;
1927}
1928
1929static void ocrdma_set_create_qp_dpp_cmd(struct ocrdma_create_qp_req *cmd,
1930 struct ocrdma_pd *pd,
1931 struct ocrdma_qp *qp,
1932 u8 enable_dpp_cq, u16 dpp_cq_id)
1933{
1934 pd->num_dpp_qp--;
1935 qp->dpp_enabled = true;
1936 cmd->max_sge_recv_flags |= OCRDMA_CREATE_QP_REQ_ENABLE_DPP_MASK;
1937 if (!enable_dpp_cq)
1938 return;
1939 cmd->max_sge_recv_flags |= OCRDMA_CREATE_QP_REQ_ENABLE_DPP_MASK;
1940 cmd->dpp_credits_cqid = dpp_cq_id;
1941 cmd->dpp_credits_cqid |= OCRDMA_CREATE_QP_REQ_DPP_CREDIT_LIMIT <<
1942 OCRDMA_CREATE_QP_REQ_DPP_CREDIT_SHIFT;
1943}
1944
1945static int ocrdma_set_create_qp_ird_cmd(struct ocrdma_create_qp_req *cmd,
1946 struct ocrdma_qp *qp)
1947{
1948 struct ocrdma_dev *dev = qp->dev;
1949 struct pci_dev *pdev = dev->nic_info.pdev;
1950 dma_addr_t pa = 0;
1951 int ird_page_size = dev->attr.ird_page_size;
1952 int ird_q_len = dev->attr.num_ird_pages * ird_page_size;
1953
1954 if (dev->attr.ird == 0)
1955 return 0;
1956
1957 qp->ird_q_va = dma_alloc_coherent(&pdev->dev, ird_q_len,
1958 &pa, GFP_KERNEL);
1959 if (!qp->ird_q_va)
1960 return -ENOMEM;
1961 memset(qp->ird_q_va, 0, ird_q_len);
1962 ocrdma_build_q_pages(&cmd->ird_addr[0], dev->attr.num_ird_pages,
1963 pa, ird_page_size);
1964 return 0;
1965}
1966
1967static void ocrdma_get_create_qp_rsp(struct ocrdma_create_qp_rsp *rsp,
1968 struct ocrdma_qp *qp,
1969 struct ib_qp_init_attr *attrs,
1970 u16 *dpp_offset, u16 *dpp_credit_lmt)
1971{
1972 u32 max_wqe_allocated, max_rqe_allocated;
1973 qp->id = rsp->qp_id & OCRDMA_CREATE_QP_RSP_QP_ID_MASK;
1974 qp->rq.dbid = rsp->sq_rq_id & OCRDMA_CREATE_QP_RSP_RQ_ID_MASK;
1975 qp->sq.dbid = rsp->sq_rq_id >> OCRDMA_CREATE_QP_RSP_SQ_ID_SHIFT;
1976 qp->max_ird = rsp->max_ord_ird & OCRDMA_CREATE_QP_RSP_MAX_IRD_MASK;
1977 qp->max_ord = (rsp->max_ord_ird >> OCRDMA_CREATE_QP_RSP_MAX_ORD_SHIFT);
1978 qp->dpp_enabled = false;
1979 if (rsp->dpp_response & OCRDMA_CREATE_QP_RSP_DPP_ENABLED_MASK) {
1980 qp->dpp_enabled = true;
1981 *dpp_credit_lmt = (rsp->dpp_response &
1982 OCRDMA_CREATE_QP_RSP_DPP_CREDITS_MASK) >>
1983 OCRDMA_CREATE_QP_RSP_DPP_CREDITS_SHIFT;
1984 *dpp_offset = (rsp->dpp_response &
1985 OCRDMA_CREATE_QP_RSP_DPP_PAGE_OFFSET_MASK) >>
1986 OCRDMA_CREATE_QP_RSP_DPP_PAGE_OFFSET_SHIFT;
1987 }
1988 max_wqe_allocated =
1989 rsp->max_wqe_rqe >> OCRDMA_CREATE_QP_RSP_MAX_WQE_SHIFT;
1990 max_wqe_allocated = 1 << max_wqe_allocated;
1991 max_rqe_allocated = 1 << ((u16)rsp->max_wqe_rqe);
1992
1993 if (qp->dev->nic_info.dev_family == OCRDMA_GEN2_FAMILY) {
1994 qp->sq.free_delta = 0;
1995 qp->rq.free_delta = 1;
1996 } else
1997 qp->sq.free_delta = 1;
1998
1999 qp->sq.max_cnt = max_wqe_allocated;
2000 qp->sq.max_wqe_idx = max_wqe_allocated - 1;
2001
2002 if (!attrs->srq) {
2003 qp->rq.max_cnt = max_rqe_allocated;
2004 qp->rq.max_wqe_idx = max_rqe_allocated - 1;
2005 qp->rq.free_delta = 1;
2006 }
2007}
2008
2009int ocrdma_mbx_create_qp(struct ocrdma_qp *qp, struct ib_qp_init_attr *attrs,
2010 u8 enable_dpp_cq, u16 dpp_cq_id, u16 *dpp_offset,
2011 u16 *dpp_credit_lmt)
2012{
2013 int status = -ENOMEM;
2014 u32 flags = 0;
2015 struct ocrdma_dev *dev = qp->dev;
2016 struct ocrdma_pd *pd = qp->pd;
2017 struct pci_dev *pdev = dev->nic_info.pdev;
2018 struct ocrdma_cq *cq;
2019 struct ocrdma_create_qp_req *cmd;
2020 struct ocrdma_create_qp_rsp *rsp;
2021 int qptype;
2022
2023 switch (attrs->qp_type) {
2024 case IB_QPT_GSI:
2025 qptype = OCRDMA_QPT_GSI;
2026 break;
2027 case IB_QPT_RC:
2028 qptype = OCRDMA_QPT_RC;
2029 break;
2030 case IB_QPT_UD:
2031 qptype = OCRDMA_QPT_UD;
2032 break;
2033 default:
2034 return -EINVAL;
2035 };
2036
2037 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_QP, sizeof(*cmd));
2038 if (!cmd)
2039 return status;
2040 cmd->type_pgsz_pdn |= (qptype << OCRDMA_CREATE_QP_REQ_QPT_SHIFT) &
2041 OCRDMA_CREATE_QP_REQ_QPT_MASK;
2042 status = ocrdma_set_create_qp_sq_cmd(cmd, attrs, qp);
2043 if (status)
2044 goto sq_err;
2045
2046 if (attrs->srq) {
2047 struct ocrdma_srq *srq = get_ocrdma_srq(attrs->srq);
2048 cmd->max_sge_recv_flags |= OCRDMA_CREATE_QP_REQ_USE_SRQ_MASK;
2049 cmd->rq_addr[0].lo = srq->id;
2050 qp->srq = srq;
2051 } else {
2052 status = ocrdma_set_create_qp_rq_cmd(cmd, attrs, qp);
2053 if (status)
2054 goto rq_err;
2055 }
2056
2057 status = ocrdma_set_create_qp_ird_cmd(cmd, qp);
2058 if (status)
2059 goto mbx_err;
2060
2061 cmd->type_pgsz_pdn |= (pd->id << OCRDMA_CREATE_QP_REQ_PD_ID_SHIFT) &
2062 OCRDMA_CREATE_QP_REQ_PD_ID_MASK;
2063
2064 flags = ocrdma_set_create_qp_mbx_access_flags(qp);
2065
2066 cmd->max_sge_recv_flags |= flags;
2067 cmd->max_ord_ird |= (dev->attr.max_ord_per_qp <<
2068 OCRDMA_CREATE_QP_REQ_MAX_ORD_SHIFT) &
2069 OCRDMA_CREATE_QP_REQ_MAX_ORD_MASK;
2070 cmd->max_ord_ird |= (dev->attr.max_ird_per_qp <<
2071 OCRDMA_CREATE_QP_REQ_MAX_IRD_SHIFT) &
2072 OCRDMA_CREATE_QP_REQ_MAX_IRD_MASK;
2073 cq = get_ocrdma_cq(attrs->send_cq);
2074 cmd->wq_rq_cqid |= (cq->id << OCRDMA_CREATE_QP_REQ_WQ_CQID_SHIFT) &
2075 OCRDMA_CREATE_QP_REQ_WQ_CQID_MASK;
2076 qp->sq_cq = cq;
2077 cq = get_ocrdma_cq(attrs->recv_cq);
2078 cmd->wq_rq_cqid |= (cq->id << OCRDMA_CREATE_QP_REQ_RQ_CQID_SHIFT) &
2079 OCRDMA_CREATE_QP_REQ_RQ_CQID_MASK;
2080 qp->rq_cq = cq;
2081
2082 if (pd->dpp_enabled && attrs->cap.max_inline_data && pd->num_dpp_qp &&
2083 (attrs->cap.max_inline_data <= dev->attr.max_inline_data))
2084 ocrdma_set_create_qp_dpp_cmd(cmd, pd, qp, enable_dpp_cq,
2085 dpp_cq_id);
2086
2087 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2088 if (status)
2089 goto mbx_err;
2090 rsp = (struct ocrdma_create_qp_rsp *)cmd;
2091 ocrdma_get_create_qp_rsp(rsp, qp, attrs, dpp_offset, dpp_credit_lmt);
2092 qp->state = OCRDMA_QPS_RST;
2093 kfree(cmd);
2094 return 0;
2095mbx_err:
2096 if (qp->rq.va)
2097 dma_free_coherent(&pdev->dev, qp->rq.len, qp->rq.va, qp->rq.pa);
2098rq_err:
2099 ocrdma_err("%s(%d) rq_err\n", __func__, dev->id);
2100 dma_free_coherent(&pdev->dev, qp->sq.len, qp->sq.va, qp->sq.pa);
2101sq_err:
2102 ocrdma_err("%s(%d) sq_err\n", __func__, dev->id);
2103 kfree(cmd);
2104 return status;
2105}
2106
2107int ocrdma_mbx_query_qp(struct ocrdma_dev *dev, struct ocrdma_qp *qp,
2108 struct ocrdma_qp_params *param)
2109{
2110 int status = -ENOMEM;
2111 struct ocrdma_query_qp *cmd;
2112 struct ocrdma_query_qp_rsp *rsp;
2113
2114 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_QUERY_QP, sizeof(*cmd));
2115 if (!cmd)
2116 return status;
2117 cmd->qp_id = qp->id;
2118 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2119 if (status)
2120 goto mbx_err;
2121 rsp = (struct ocrdma_query_qp_rsp *)cmd;
2122 memcpy(param, &rsp->params, sizeof(struct ocrdma_qp_params));
2123mbx_err:
2124 kfree(cmd);
2125 return status;
2126}
2127
2128int ocrdma_resolve_dgid(struct ocrdma_dev *dev, union ib_gid *dgid,
2129 u8 *mac_addr)
2130{
2131 struct in6_addr in6;
2132
2133 memcpy(&in6, dgid, sizeof in6);
2134 if (rdma_is_multicast_addr(&in6))
2135 rdma_get_mcast_mac(&in6, mac_addr);
2136 else if (rdma_link_local_addr(&in6))
2137 rdma_get_ll_mac(&in6, mac_addr);
2138 else {
2139 ocrdma_err("%s() fail to resolve mac_addr.\n", __func__);
2140 return -EINVAL;
2141 }
2142 return 0;
2143}
2144
2145static void ocrdma_set_av_params(struct ocrdma_qp *qp,
2146 struct ocrdma_modify_qp *cmd,
2147 struct ib_qp_attr *attrs)
2148{
2149 struct ib_ah_attr *ah_attr = &attrs->ah_attr;
2150 union ib_gid sgid;
2151 u32 vlan_id;
2152 u8 mac_addr[6];
2153 if ((ah_attr->ah_flags & IB_AH_GRH) == 0)
2154 return;
2155 cmd->params.tclass_sq_psn |=
2156 (ah_attr->grh.traffic_class << OCRDMA_QP_PARAMS_TCLASS_SHIFT);
2157 cmd->params.rnt_rc_sl_fl |=
2158 (ah_attr->grh.flow_label & OCRDMA_QP_PARAMS_FLOW_LABEL_MASK);
2159 cmd->params.hop_lmt_rq_psn |=
2160 (ah_attr->grh.hop_limit << OCRDMA_QP_PARAMS_HOP_LMT_SHIFT);
2161 cmd->flags |= OCRDMA_QP_PARA_FLOW_LBL_VALID;
2162 memcpy(&cmd->params.dgid[0], &ah_attr->grh.dgid.raw[0],
2163 sizeof(cmd->params.dgid));
2164 ocrdma_query_gid(&qp->dev->ibdev, 1,
2165 ah_attr->grh.sgid_index, &sgid);
2166 qp->sgid_idx = ah_attr->grh.sgid_index;
2167 memcpy(&cmd->params.sgid[0], &sgid.raw[0], sizeof(cmd->params.sgid));
2168 ocrdma_resolve_dgid(qp->dev, &ah_attr->grh.dgid, &mac_addr[0]);
2169 cmd->params.dmac_b0_to_b3 = mac_addr[0] | (mac_addr[1] << 8) |
2170 (mac_addr[2] << 16) | (mac_addr[3] << 24);
2171 /* convert them to LE format. */
2172 ocrdma_cpu_to_le32(&cmd->params.dgid[0], sizeof(cmd->params.dgid));
2173 ocrdma_cpu_to_le32(&cmd->params.sgid[0], sizeof(cmd->params.sgid));
2174 cmd->params.vlan_dmac_b4_to_b5 = mac_addr[4] | (mac_addr[5] << 8);
2175 vlan_id = rdma_get_vlan_id(&sgid);
2176 if (vlan_id && (vlan_id < 0x1000)) {
2177 cmd->params.vlan_dmac_b4_to_b5 |=
2178 vlan_id << OCRDMA_QP_PARAMS_VLAN_SHIFT;
2179 cmd->flags |= OCRDMA_QP_PARA_VLAN_EN_VALID;
2180 }
2181}
2182
2183static int ocrdma_set_qp_params(struct ocrdma_qp *qp,
2184 struct ocrdma_modify_qp *cmd,
2185 struct ib_qp_attr *attrs, int attr_mask,
2186 enum ib_qp_state old_qps)
2187{
2188 int status = 0;
2189 struct net_device *netdev = qp->dev->nic_info.netdev;
2190 int eth_mtu = iboe_get_mtu(netdev->mtu);
2191
2192 if (attr_mask & IB_QP_PKEY_INDEX) {
2193 cmd->params.path_mtu_pkey_indx |= (attrs->pkey_index &
2194 OCRDMA_QP_PARAMS_PKEY_INDEX_MASK);
2195 cmd->flags |= OCRDMA_QP_PARA_PKEY_VALID;
2196 }
2197 if (attr_mask & IB_QP_QKEY) {
2198 qp->qkey = attrs->qkey;
2199 cmd->params.qkey = attrs->qkey;
2200 cmd->flags |= OCRDMA_QP_PARA_QKEY_VALID;
2201 }
2202 if (attr_mask & IB_QP_AV)
2203 ocrdma_set_av_params(qp, cmd, attrs);
2204 else if (qp->qp_type == IB_QPT_GSI || qp->qp_type == IB_QPT_UD) {
2205 /* set the default mac address for UD, GSI QPs */
2206 cmd->params.dmac_b0_to_b3 = qp->dev->nic_info.mac_addr[0] |
2207 (qp->dev->nic_info.mac_addr[1] << 8) |
2208 (qp->dev->nic_info.mac_addr[2] << 16) |
2209 (qp->dev->nic_info.mac_addr[3] << 24);
2210 cmd->params.vlan_dmac_b4_to_b5 = qp->dev->nic_info.mac_addr[4] |
2211 (qp->dev->nic_info.mac_addr[5] << 8);
2212 }
2213 if ((attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY) &&
2214 attrs->en_sqd_async_notify) {
2215 cmd->params.max_sge_recv_flags |=
2216 OCRDMA_QP_PARAMS_FLAGS_SQD_ASYNC;
2217 cmd->flags |= OCRDMA_QP_PARA_DST_QPN_VALID;
2218 }
2219 if (attr_mask & IB_QP_DEST_QPN) {
2220 cmd->params.ack_to_rnr_rtc_dest_qpn |= (attrs->dest_qp_num &
2221 OCRDMA_QP_PARAMS_DEST_QPN_MASK);
2222 cmd->flags |= OCRDMA_QP_PARA_DST_QPN_VALID;
2223 }
2224 if (attr_mask & IB_QP_PATH_MTU) {
2225 if (ib_mtu_enum_to_int(eth_mtu) <
2226 ib_mtu_enum_to_int(attrs->path_mtu)) {
2227 status = -EINVAL;
2228 goto pmtu_err;
2229 }
2230 cmd->params.path_mtu_pkey_indx |=
2231 (ib_mtu_enum_to_int(attrs->path_mtu) <<
2232 OCRDMA_QP_PARAMS_PATH_MTU_SHIFT) &
2233 OCRDMA_QP_PARAMS_PATH_MTU_MASK;
2234 cmd->flags |= OCRDMA_QP_PARA_PMTU_VALID;
2235 }
2236 if (attr_mask & IB_QP_TIMEOUT) {
2237 cmd->params.ack_to_rnr_rtc_dest_qpn |= attrs->timeout <<
2238 OCRDMA_QP_PARAMS_ACK_TIMEOUT_SHIFT;
2239 cmd->flags |= OCRDMA_QP_PARA_ACK_TO_VALID;
2240 }
2241 if (attr_mask & IB_QP_RETRY_CNT) {
2242 cmd->params.rnt_rc_sl_fl |= (attrs->retry_cnt <<
2243 OCRDMA_QP_PARAMS_RETRY_CNT_SHIFT) &
2244 OCRDMA_QP_PARAMS_RETRY_CNT_MASK;
2245 cmd->flags |= OCRDMA_QP_PARA_RETRY_CNT_VALID;
2246 }
2247 if (attr_mask & IB_QP_MIN_RNR_TIMER) {
2248 cmd->params.rnt_rc_sl_fl |= (attrs->min_rnr_timer <<
2249 OCRDMA_QP_PARAMS_RNR_NAK_TIMER_SHIFT) &
2250 OCRDMA_QP_PARAMS_RNR_NAK_TIMER_MASK;
2251 cmd->flags |= OCRDMA_QP_PARA_RNT_VALID;
2252 }
2253 if (attr_mask & IB_QP_RNR_RETRY) {
2254 cmd->params.ack_to_rnr_rtc_dest_qpn |= (attrs->rnr_retry <<
2255 OCRDMA_QP_PARAMS_RNR_RETRY_CNT_SHIFT)
2256 & OCRDMA_QP_PARAMS_RNR_RETRY_CNT_MASK;
2257 cmd->flags |= OCRDMA_QP_PARA_RRC_VALID;
2258 }
2259 if (attr_mask & IB_QP_SQ_PSN) {
2260 cmd->params.tclass_sq_psn |= (attrs->sq_psn & 0x00ffffff);
2261 cmd->flags |= OCRDMA_QP_PARA_SQPSN_VALID;
2262 }
2263 if (attr_mask & IB_QP_RQ_PSN) {
2264 cmd->params.hop_lmt_rq_psn |= (attrs->rq_psn & 0x00ffffff);
2265 cmd->flags |= OCRDMA_QP_PARA_RQPSN_VALID;
2266 }
2267 if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
2268 if (attrs->max_rd_atomic > qp->dev->attr.max_ord_per_qp) {
2269 status = -EINVAL;
2270 goto pmtu_err;
2271 }
2272 qp->max_ord = attrs->max_rd_atomic;
2273 cmd->flags |= OCRDMA_QP_PARA_MAX_ORD_VALID;
2274 }
2275 if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
2276 if (attrs->max_dest_rd_atomic > qp->dev->attr.max_ird_per_qp) {
2277 status = -EINVAL;
2278 goto pmtu_err;
2279 }
2280 qp->max_ird = attrs->max_dest_rd_atomic;
2281 cmd->flags |= OCRDMA_QP_PARA_MAX_IRD_VALID;
2282 }
2283 cmd->params.max_ord_ird = (qp->max_ord <<
2284 OCRDMA_QP_PARAMS_MAX_ORD_SHIFT) |
2285 (qp->max_ird & OCRDMA_QP_PARAMS_MAX_IRD_MASK);
2286pmtu_err:
2287 return status;
2288}
2289
2290int ocrdma_mbx_modify_qp(struct ocrdma_dev *dev, struct ocrdma_qp *qp,
2291 struct ib_qp_attr *attrs, int attr_mask,
2292 enum ib_qp_state old_qps)
2293{
2294 int status = -ENOMEM;
2295 struct ocrdma_modify_qp *cmd;
2296
2297 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_MODIFY_QP, sizeof(*cmd));
2298 if (!cmd)
2299 return status;
2300
2301 cmd->params.id = qp->id;
2302 cmd->flags = 0;
2303 if (attr_mask & IB_QP_STATE) {
2304 cmd->params.max_sge_recv_flags |=
2305 (get_ocrdma_qp_state(attrs->qp_state) <<
2306 OCRDMA_QP_PARAMS_STATE_SHIFT) &
2307 OCRDMA_QP_PARAMS_STATE_MASK;
2308 cmd->flags |= OCRDMA_QP_PARA_QPS_VALID;
2309 } else
2310 cmd->params.max_sge_recv_flags |=
2311 (qp->state << OCRDMA_QP_PARAMS_STATE_SHIFT) &
2312 OCRDMA_QP_PARAMS_STATE_MASK;
2313 status = ocrdma_set_qp_params(qp, cmd, attrs, attr_mask, old_qps);
2314 if (status)
2315 goto mbx_err;
2316 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2317 if (status)
2318 goto mbx_err;
2319
2320mbx_err:
2321 kfree(cmd);
2322 return status;
2323}
2324
2325int ocrdma_mbx_destroy_qp(struct ocrdma_dev *dev, struct ocrdma_qp *qp)
2326{
2327 int status = -ENOMEM;
2328 struct ocrdma_destroy_qp *cmd;
2329 struct pci_dev *pdev = dev->nic_info.pdev;
2330
2331 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_QP, sizeof(*cmd));
2332 if (!cmd)
2333 return status;
2334 cmd->qp_id = qp->id;
2335 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2336 if (status)
2337 goto mbx_err;
2338
2339mbx_err:
2340 kfree(cmd);
2341 if (qp->sq.va)
2342 dma_free_coherent(&pdev->dev, qp->sq.len, qp->sq.va, qp->sq.pa);
2343 if (!qp->srq && qp->rq.va)
2344 dma_free_coherent(&pdev->dev, qp->rq.len, qp->rq.va, qp->rq.pa);
2345 if (qp->dpp_enabled)
2346 qp->pd->num_dpp_qp++;
2347 return status;
2348}
2349
2350int ocrdma_mbx_create_srq(struct ocrdma_srq *srq,
2351 struct ib_srq_init_attr *srq_attr,
2352 struct ocrdma_pd *pd)
2353{
2354 int status = -ENOMEM;
2355 int hw_pages, hw_page_size;
2356 int len;
2357 struct ocrdma_create_srq_rsp *rsp;
2358 struct ocrdma_create_srq *cmd;
2359 dma_addr_t pa;
2360 struct ocrdma_dev *dev = srq->dev;
2361 struct pci_dev *pdev = dev->nic_info.pdev;
2362 u32 max_rqe_allocated;
2363
2364 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_SRQ, sizeof(*cmd));
2365 if (!cmd)
2366 return status;
2367
2368 cmd->pgsz_pdid = pd->id & OCRDMA_CREATE_SRQ_PD_ID_MASK;
2369 max_rqe_allocated = srq_attr->attr.max_wr + 1;
2370 status = ocrdma_build_q_conf(&max_rqe_allocated,
2371 dev->attr.rqe_size,
2372 &hw_pages, &hw_page_size);
2373 if (status) {
2374 ocrdma_err("%s() req. max_wr=0x%x\n", __func__,
2375 srq_attr->attr.max_wr);
2376 status = -EINVAL;
2377 goto ret;
2378 }
2379 len = hw_pages * hw_page_size;
2380 srq->rq.va = dma_alloc_coherent(&pdev->dev, len, &pa, GFP_KERNEL);
2381 if (!srq->rq.va) {
2382 status = -ENOMEM;
2383 goto ret;
2384 }
2385 ocrdma_build_q_pages(&cmd->rq_addr[0], hw_pages, pa, hw_page_size);
2386
2387 srq->rq.entry_size = dev->attr.rqe_size;
2388 srq->rq.pa = pa;
2389 srq->rq.len = len;
2390 srq->rq.max_cnt = max_rqe_allocated;
2391
2392 cmd->max_sge_rqe = ilog2(max_rqe_allocated);
2393 cmd->max_sge_rqe |= srq_attr->attr.max_sge <<
2394 OCRDMA_CREATE_SRQ_MAX_SGE_RECV_SHIFT;
2395
2396 cmd->pgsz_pdid |= (ilog2(hw_page_size / OCRDMA_MIN_Q_PAGE_SIZE)
2397 << OCRDMA_CREATE_SRQ_PG_SZ_SHIFT);
2398 cmd->pages_rqe_sz |= (dev->attr.rqe_size
2399 << OCRDMA_CREATE_SRQ_RQE_SIZE_SHIFT)
2400 & OCRDMA_CREATE_SRQ_RQE_SIZE_MASK;
2401 cmd->pages_rqe_sz |= hw_pages << OCRDMA_CREATE_SRQ_NUM_RQ_PAGES_SHIFT;
2402
2403 status = ocrdma_mbx_cmd(dev, (struct ocrdma_mqe *)cmd);
2404 if (status)
2405 goto mbx_err;
2406 rsp = (struct ocrdma_create_srq_rsp *)cmd;
2407 srq->id = rsp->id;
2408 srq->rq.dbid = rsp->id;
2409 max_rqe_allocated = ((rsp->max_sge_rqe_allocated &
2410 OCRDMA_CREATE_SRQ_RSP_MAX_RQE_ALLOCATED_MASK) >>
2411 OCRDMA_CREATE_SRQ_RSP_MAX_RQE_ALLOCATED_SHIFT);
2412 max_rqe_allocated = (1 << max_rqe_allocated);
2413 srq->rq.max_cnt = max_rqe_allocated;
2414 srq->rq.max_wqe_idx = max_rqe_allocated - 1;
2415 srq->rq.max_sges = (rsp->max_sge_rqe_allocated &
2416 OCRDMA_CREATE_SRQ_RSP_MAX_SGE_RECV_ALLOCATED_MASK) >>
2417 OCRDMA_CREATE_SRQ_RSP_MAX_SGE_RECV_ALLOCATED_SHIFT;
2418 goto ret;
2419mbx_err:
2420 dma_free_coherent(&pdev->dev, srq->rq.len, srq->rq.va, pa);
2421ret:
2422 kfree(cmd);
2423 return status;
2424}
2425
2426int ocrdma_mbx_modify_srq(struct ocrdma_srq *srq, struct ib_srq_attr *srq_attr)
2427{
2428 int status = -ENOMEM;
2429 struct ocrdma_modify_srq *cmd;
2430 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_SRQ, sizeof(*cmd));
2431 if (!cmd)
2432 return status;
2433 cmd->id = srq->id;
2434 cmd->limit_max_rqe |= srq_attr->srq_limit <<
2435 OCRDMA_MODIFY_SRQ_LIMIT_SHIFT;
2436 status = ocrdma_mbx_cmd(srq->dev, (struct ocrdma_mqe *)cmd);
2437 kfree(cmd);
2438 return status;
2439}
2440
2441int ocrdma_mbx_query_srq(struct ocrdma_srq *srq, struct ib_srq_attr *srq_attr)
2442{
2443 int status = -ENOMEM;
2444 struct ocrdma_query_srq *cmd;
2445 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_CREATE_SRQ, sizeof(*cmd));
2446 if (!cmd)
2447 return status;
2448 cmd->id = srq->rq.dbid;
2449 status = ocrdma_mbx_cmd(srq->dev, (struct ocrdma_mqe *)cmd);
2450 if (status == 0) {
2451 struct ocrdma_query_srq_rsp *rsp =
2452 (struct ocrdma_query_srq_rsp *)cmd;
2453 srq_attr->max_sge =
2454 rsp->srq_lmt_max_sge &
2455 OCRDMA_QUERY_SRQ_RSP_MAX_SGE_RECV_MASK;
2456 srq_attr->max_wr =
2457 rsp->max_rqe_pdid >> OCRDMA_QUERY_SRQ_RSP_MAX_RQE_SHIFT;
2458 srq_attr->srq_limit = rsp->srq_lmt_max_sge >>
2459 OCRDMA_QUERY_SRQ_RSP_SRQ_LIMIT_SHIFT;
2460 }
2461 kfree(cmd);
2462 return status;
2463}
2464
2465int ocrdma_mbx_destroy_srq(struct ocrdma_dev *dev, struct ocrdma_srq *srq)
2466{
2467 int status = -ENOMEM;
2468 struct ocrdma_destroy_srq *cmd;
2469 struct pci_dev *pdev = dev->nic_info.pdev;
2470 cmd = ocrdma_init_emb_mqe(OCRDMA_CMD_DELETE_SRQ, sizeof(*cmd));
2471 if (!cmd)
2472 return status;
2473 cmd->id = srq->id;
2474 status = ocrdma_mbx_cmd(srq->dev, (struct ocrdma_mqe *)cmd);
2475 if (srq->rq.va)
2476 dma_free_coherent(&pdev->dev, srq->rq.len,
2477 srq->rq.va, srq->rq.pa);
2478 kfree(cmd);
2479 return status;
2480}
2481
2482int ocrdma_alloc_av(struct ocrdma_dev *dev, struct ocrdma_ah *ah)
2483{
2484 int i;
2485 int status = -EINVAL;
2486 struct ocrdma_av *av;
2487 unsigned long flags;
2488
2489 av = dev->av_tbl.va;
2490 spin_lock_irqsave(&dev->av_tbl.lock, flags);
2491 for (i = 0; i < dev->av_tbl.num_ah; i++) {
2492 if (av->valid == 0) {
2493 av->valid = OCRDMA_AV_VALID;
2494 ah->av = av;
2495 ah->id = i;
2496 status = 0;
2497 break;
2498 }
2499 av++;
2500 }
2501 if (i == dev->av_tbl.num_ah)
2502 status = -EAGAIN;
2503 spin_unlock_irqrestore(&dev->av_tbl.lock, flags);
2504 return status;
2505}
2506
2507int ocrdma_free_av(struct ocrdma_dev *dev, struct ocrdma_ah *ah)
2508{
2509 unsigned long flags;
2510 spin_lock_irqsave(&dev->av_tbl.lock, flags);
2511 ah->av->valid = 0;
2512 spin_unlock_irqrestore(&dev->av_tbl.lock, flags);
2513 return 0;
2514}
2515
2516static int ocrdma_create_mq_eq(struct ocrdma_dev *dev)
2517{
2518 int status;
2519 int irq;
2520 unsigned long flags = 0;
2521 int num_eq = 0;
2522
2523 if (dev->nic_info.intr_mode == BE_INTERRUPT_MODE_INTX)
2524 flags = IRQF_SHARED;
2525 else {
2526 num_eq = dev->nic_info.msix.num_vectors -
2527 dev->nic_info.msix.start_vector;
2528 /* minimum two vectors/eq are required for rdma to work.
2529 * one for control path and one for data path.
2530 */
2531 if (num_eq < 2)
2532 return -EBUSY;
2533 }
2534
2535 status = ocrdma_create_eq(dev, &dev->meq, OCRDMA_EQ_LEN);
2536 if (status)
2537 return status;
2538 sprintf(dev->meq.irq_name, "ocrdma_mq%d", dev->id);
2539 irq = ocrdma_get_irq(dev, &dev->meq);
2540 status = request_irq(irq, ocrdma_irq_handler, flags, dev->meq.irq_name,
2541 &dev->meq);
2542 if (status)
2543 _ocrdma_destroy_eq(dev, &dev->meq);
2544 return status;
2545}
2546
2547static int ocrdma_create_qp_eqs(struct ocrdma_dev *dev)
2548{
2549 int num_eq, i, status = 0;
2550 int irq;
2551 unsigned long flags = 0;
2552
2553 num_eq = dev->nic_info.msix.num_vectors -
2554 dev->nic_info.msix.start_vector;
2555 if (dev->nic_info.intr_mode == BE_INTERRUPT_MODE_INTX) {
2556 num_eq = 1;
2557 flags = IRQF_SHARED;
2558 } else
2559 num_eq = min_t(u32, num_eq, num_online_cpus());
2560 dev->qp_eq_tbl = kzalloc(sizeof(struct ocrdma_eq) * num_eq, GFP_KERNEL);
2561 if (!dev->qp_eq_tbl)
2562 return -ENOMEM;
2563
2564 for (i = 0; i < num_eq; i++) {
2565 status = ocrdma_create_eq(dev, &dev->qp_eq_tbl[i],
2566 OCRDMA_EQ_LEN);
2567 if (status) {
2568 status = -EINVAL;
2569 break;
2570 }
2571 sprintf(dev->qp_eq_tbl[i].irq_name, "ocrdma_qp%d-%d",
2572 dev->id, i);
2573 irq = ocrdma_get_irq(dev, &dev->qp_eq_tbl[i]);
2574 status = request_irq(irq, ocrdma_irq_handler, flags,
2575 dev->qp_eq_tbl[i].irq_name,
2576 &dev->qp_eq_tbl[i]);
2577 if (status) {
2578 _ocrdma_destroy_eq(dev, &dev->qp_eq_tbl[i]);
2579 status = -EINVAL;
2580 break;
2581 }
2582 dev->eq_cnt += 1;
2583 }
2584 /* one eq is sufficient for data path to work */
2585 if (dev->eq_cnt >= 1)
2586 return 0;
2587 if (status)
2588 ocrdma_destroy_qp_eqs(dev);
2589 return status;
2590}
2591
2592int ocrdma_init_hw(struct ocrdma_dev *dev)
2593{
2594 int status;
2595 /* set up control path eq */
2596 status = ocrdma_create_mq_eq(dev);
2597 if (status)
2598 return status;
2599 /* set up data path eq */
2600 status = ocrdma_create_qp_eqs(dev);
2601 if (status)
2602 goto qpeq_err;
2603 status = ocrdma_create_mq(dev);
2604 if (status)
2605 goto mq_err;
2606 status = ocrdma_mbx_query_fw_config(dev);
2607 if (status)
2608 goto conf_err;
2609 status = ocrdma_mbx_query_dev(dev);
2610 if (status)
2611 goto conf_err;
2612 status = ocrdma_mbx_query_fw_ver(dev);
2613 if (status)
2614 goto conf_err;
2615 status = ocrdma_mbx_create_ah_tbl(dev);
2616 if (status)
2617 goto conf_err;
2618 return 0;
2619
2620conf_err:
2621 ocrdma_destroy_mq(dev);
2622mq_err:
2623 ocrdma_destroy_qp_eqs(dev);
2624qpeq_err:
2625 ocrdma_destroy_eq(dev, &dev->meq);
2626 ocrdma_err("%s() status=%d\n", __func__, status);
2627 return status;
2628}
2629
2630void ocrdma_cleanup_hw(struct ocrdma_dev *dev)
2631{
2632 ocrdma_mbx_delete_ah_tbl(dev);
2633
2634 /* cleanup the data path eqs */
2635 ocrdma_destroy_qp_eqs(dev);
2636
2637 /* cleanup the control path */
2638 ocrdma_destroy_mq(dev);
2639 ocrdma_destroy_eq(dev, &dev->meq);
2640}
generated by cgit v1.2.2 (git 2.25.0) at 2025-02-26 19:29:51 -0500