2 * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 #include <linux/module.h>
34 #include <rdma/ib_umem.h>
38 /* not supported currently */
39 static int wq_signature
;
42 MLX5_IB_ACK_REQ_FREQ
= 8,
46 MLX5_IB_DEFAULT_SCHED_QUEUE
= 0x83,
47 MLX5_IB_DEFAULT_QP0_SCHED_QUEUE
= 0x3f,
48 MLX5_IB_LINK_TYPE_IB
= 0,
49 MLX5_IB_LINK_TYPE_ETH
= 1
53 MLX5_IB_SQ_STRIDE
= 6,
54 MLX5_IB_CACHE_LINE_SIZE
= 64,
57 static const u32 mlx5_ib_opcode
[] = {
58 [IB_WR_SEND
] = MLX5_OPCODE_SEND
,
59 [IB_WR_SEND_WITH_IMM
] = MLX5_OPCODE_SEND_IMM
,
60 [IB_WR_RDMA_WRITE
] = MLX5_OPCODE_RDMA_WRITE
,
61 [IB_WR_RDMA_WRITE_WITH_IMM
] = MLX5_OPCODE_RDMA_WRITE_IMM
,
62 [IB_WR_RDMA_READ
] = MLX5_OPCODE_RDMA_READ
,
63 [IB_WR_ATOMIC_CMP_AND_SWP
] = MLX5_OPCODE_ATOMIC_CS
,
64 [IB_WR_ATOMIC_FETCH_AND_ADD
] = MLX5_OPCODE_ATOMIC_FA
,
65 [IB_WR_SEND_WITH_INV
] = MLX5_OPCODE_SEND_INVAL
,
66 [IB_WR_LOCAL_INV
] = MLX5_OPCODE_UMR
,
67 [IB_WR_FAST_REG_MR
] = MLX5_OPCODE_UMR
,
68 [IB_WR_MASKED_ATOMIC_CMP_AND_SWP
] = MLX5_OPCODE_ATOMIC_MASKED_CS
,
69 [IB_WR_MASKED_ATOMIC_FETCH_AND_ADD
] = MLX5_OPCODE_ATOMIC_MASKED_FA
,
70 [MLX5_IB_WR_UMR
] = MLX5_OPCODE_UMR
,
76 unsigned int page_shift
;
83 static int is_qp0(enum ib_qp_type qp_type
)
85 return qp_type
== IB_QPT_SMI
;
88 static int is_qp1(enum ib_qp_type qp_type
)
90 return qp_type
== IB_QPT_GSI
;
93 static int is_sqp(enum ib_qp_type qp_type
)
95 return is_qp0(qp_type
) || is_qp1(qp_type
);
98 static void *get_wqe(struct mlx5_ib_qp
*qp
, int offset
)
100 return mlx5_buf_offset(&qp
->buf
, offset
);
103 static void *get_recv_wqe(struct mlx5_ib_qp
*qp
, int n
)
105 return get_wqe(qp
, qp
->rq
.offset
+ (n
<< qp
->rq
.wqe_shift
));
108 void *mlx5_get_send_wqe(struct mlx5_ib_qp
*qp
, int n
)
110 return get_wqe(qp
, qp
->sq
.offset
+ (n
<< MLX5_IB_SQ_STRIDE
));
113 static void mlx5_ib_qp_event(struct mlx5_core_qp
*qp
, int type
)
115 struct ib_qp
*ibqp
= &to_mibqp(qp
)->ibqp
;
116 struct ib_event event
;
118 if (type
== MLX5_EVENT_TYPE_PATH_MIG
)
119 to_mibqp(qp
)->port
= to_mibqp(qp
)->alt_port
;
121 if (ibqp
->event_handler
) {
122 event
.device
= ibqp
->device
;
123 event
.element
.qp
= ibqp
;
125 case MLX5_EVENT_TYPE_PATH_MIG
:
126 event
.event
= IB_EVENT_PATH_MIG
;
128 case MLX5_EVENT_TYPE_COMM_EST
:
129 event
.event
= IB_EVENT_COMM_EST
;
131 case MLX5_EVENT_TYPE_SQ_DRAINED
:
132 event
.event
= IB_EVENT_SQ_DRAINED
;
134 case MLX5_EVENT_TYPE_SRQ_LAST_WQE
:
135 event
.event
= IB_EVENT_QP_LAST_WQE_REACHED
;
137 case MLX5_EVENT_TYPE_WQ_CATAS_ERROR
:
138 event
.event
= IB_EVENT_QP_FATAL
;
140 case MLX5_EVENT_TYPE_PATH_MIG_FAILED
:
141 event
.event
= IB_EVENT_PATH_MIG_ERR
;
143 case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR
:
144 event
.event
= IB_EVENT_QP_REQ_ERR
;
146 case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR
:
147 event
.event
= IB_EVENT_QP_ACCESS_ERR
;
150 pr_warn("mlx5_ib: Unexpected event type %d on QP %06x\n", type
, qp
->qpn
);
154 ibqp
->event_handler(&event
, ibqp
->qp_context
);
158 static int set_rq_size(struct mlx5_ib_dev
*dev
, struct ib_qp_cap
*cap
,
159 int has_rq
, struct mlx5_ib_qp
*qp
, struct mlx5_ib_create_qp
*ucmd
)
164 /* Sanity check RQ size before proceeding */
165 if (cap
->max_recv_wr
> dev
->mdev
->caps
.max_wqes
)
171 qp
->rq
.wqe_shift
= 0;
174 qp
->rq
.wqe_cnt
= ucmd
->rq_wqe_count
;
175 qp
->rq
.wqe_shift
= ucmd
->rq_wqe_shift
;
176 qp
->rq
.max_gs
= (1 << qp
->rq
.wqe_shift
) / sizeof(struct mlx5_wqe_data_seg
) - qp
->wq_sig
;
177 qp
->rq
.max_post
= qp
->rq
.wqe_cnt
;
179 wqe_size
= qp
->wq_sig
? sizeof(struct mlx5_wqe_signature_seg
) : 0;
180 wqe_size
+= cap
->max_recv_sge
* sizeof(struct mlx5_wqe_data_seg
);
181 wqe_size
= roundup_pow_of_two(wqe_size
);
182 wq_size
= roundup_pow_of_two(cap
->max_recv_wr
) * wqe_size
;
183 wq_size
= max_t(int, wq_size
, MLX5_SEND_WQE_BB
);
184 qp
->rq
.wqe_cnt
= wq_size
/ wqe_size
;
185 if (wqe_size
> dev
->mdev
->caps
.max_rq_desc_sz
) {
186 mlx5_ib_dbg(dev
, "wqe_size %d, max %d\n",
188 dev
->mdev
->caps
.max_rq_desc_sz
);
191 qp
->rq
.wqe_shift
= ilog2(wqe_size
);
192 qp
->rq
.max_gs
= (1 << qp
->rq
.wqe_shift
) / sizeof(struct mlx5_wqe_data_seg
) - qp
->wq_sig
;
193 qp
->rq
.max_post
= qp
->rq
.wqe_cnt
;
200 static int sq_overhead(enum ib_qp_type qp_type
)
206 size
+= sizeof(struct mlx5_wqe_xrc_seg
);
209 size
+= sizeof(struct mlx5_wqe_ctrl_seg
) +
210 sizeof(struct mlx5_wqe_atomic_seg
) +
211 sizeof(struct mlx5_wqe_raddr_seg
);
218 size
+= sizeof(struct mlx5_wqe_ctrl_seg
) +
219 sizeof(struct mlx5_wqe_raddr_seg
) +
220 sizeof(struct mlx5_wqe_umr_ctrl_seg
) +
221 sizeof(struct mlx5_mkey_seg
);
227 size
+= sizeof(struct mlx5_wqe_ctrl_seg
) +
228 sizeof(struct mlx5_wqe_datagram_seg
);
231 case MLX5_IB_QPT_REG_UMR
:
232 size
+= sizeof(struct mlx5_wqe_ctrl_seg
) +
233 sizeof(struct mlx5_wqe_umr_ctrl_seg
) +
234 sizeof(struct mlx5_mkey_seg
);
244 static int calc_send_wqe(struct ib_qp_init_attr
*attr
)
249 size
= sq_overhead(attr
->qp_type
);
253 if (attr
->cap
.max_inline_data
) {
254 inl_size
= size
+ sizeof(struct mlx5_wqe_inline_seg
) +
255 attr
->cap
.max_inline_data
;
258 size
+= attr
->cap
.max_send_sge
* sizeof(struct mlx5_wqe_data_seg
);
259 if (attr
->create_flags
& IB_QP_CREATE_SIGNATURE_EN
&&
260 ALIGN(max_t(int, inl_size
, size
), MLX5_SEND_WQE_BB
) < MLX5_SIG_WQE_SIZE
)
261 return MLX5_SIG_WQE_SIZE
;
263 return ALIGN(max_t(int, inl_size
, size
), MLX5_SEND_WQE_BB
);
266 static int calc_sq_size(struct mlx5_ib_dev
*dev
, struct ib_qp_init_attr
*attr
,
267 struct mlx5_ib_qp
*qp
)
272 if (!attr
->cap
.max_send_wr
)
275 wqe_size
= calc_send_wqe(attr
);
276 mlx5_ib_dbg(dev
, "wqe_size %d\n", wqe_size
);
280 if (wqe_size
> dev
->mdev
->caps
.max_sq_desc_sz
) {
281 mlx5_ib_dbg(dev
, "wqe_size(%d) > max_sq_desc_sz(%d)\n",
282 wqe_size
, dev
->mdev
->caps
.max_sq_desc_sz
);
286 qp
->max_inline_data
= wqe_size
- sq_overhead(attr
->qp_type
) -
287 sizeof(struct mlx5_wqe_inline_seg
);
288 attr
->cap
.max_inline_data
= qp
->max_inline_data
;
290 if (attr
->create_flags
& IB_QP_CREATE_SIGNATURE_EN
)
291 qp
->signature_en
= true;
293 wq_size
= roundup_pow_of_two(attr
->cap
.max_send_wr
* wqe_size
);
294 qp
->sq
.wqe_cnt
= wq_size
/ MLX5_SEND_WQE_BB
;
295 if (qp
->sq
.wqe_cnt
> dev
->mdev
->caps
.max_wqes
) {
296 mlx5_ib_dbg(dev
, "wqe count(%d) exceeds limits(%d)\n",
297 qp
->sq
.wqe_cnt
, dev
->mdev
->caps
.max_wqes
);
300 qp
->sq
.wqe_shift
= ilog2(MLX5_SEND_WQE_BB
);
301 qp
->sq
.max_gs
= attr
->cap
.max_send_sge
;
302 qp
->sq
.max_post
= wq_size
/ wqe_size
;
303 attr
->cap
.max_send_wr
= qp
->sq
.max_post
;
308 static int set_user_buf_size(struct mlx5_ib_dev
*dev
,
309 struct mlx5_ib_qp
*qp
,
310 struct mlx5_ib_create_qp
*ucmd
)
312 int desc_sz
= 1 << qp
->sq
.wqe_shift
;
314 if (desc_sz
> dev
->mdev
->caps
.max_sq_desc_sz
) {
315 mlx5_ib_warn(dev
, "desc_sz %d, max_sq_desc_sz %d\n",
316 desc_sz
, dev
->mdev
->caps
.max_sq_desc_sz
);
320 if (ucmd
->sq_wqe_count
&& ((1 << ilog2(ucmd
->sq_wqe_count
)) != ucmd
->sq_wqe_count
)) {
321 mlx5_ib_warn(dev
, "sq_wqe_count %d, sq_wqe_count %d\n",
322 ucmd
->sq_wqe_count
, ucmd
->sq_wqe_count
);
326 qp
->sq
.wqe_cnt
= ucmd
->sq_wqe_count
;
328 if (qp
->sq
.wqe_cnt
> dev
->mdev
->caps
.max_wqes
) {
329 mlx5_ib_warn(dev
, "wqe_cnt %d, max_wqes %d\n",
330 qp
->sq
.wqe_cnt
, dev
->mdev
->caps
.max_wqes
);
334 qp
->buf_size
= (qp
->rq
.wqe_cnt
<< qp
->rq
.wqe_shift
) +
335 (qp
->sq
.wqe_cnt
<< 6);
340 static int qp_has_rq(struct ib_qp_init_attr
*attr
)
342 if (attr
->qp_type
== IB_QPT_XRC_INI
||
343 attr
->qp_type
== IB_QPT_XRC_TGT
|| attr
->srq
||
344 attr
->qp_type
== MLX5_IB_QPT_REG_UMR
||
345 !attr
->cap
.max_recv_wr
)
351 static int first_med_uuar(void)
356 static int next_uuar(int n
)
360 while (((n
% 4) & 2))
366 static int num_med_uuar(struct mlx5_uuar_info
*uuari
)
370 n
= uuari
->num_uars
* MLX5_NON_FP_BF_REGS_PER_PAGE
-
371 uuari
->num_low_latency_uuars
- 1;
373 return n
>= 0 ? n
: 0;
376 static int max_uuari(struct mlx5_uuar_info
*uuari
)
378 return uuari
->num_uars
* 4;
381 static int first_hi_uuar(struct mlx5_uuar_info
*uuari
)
387 med
= num_med_uuar(uuari
);
388 for (t
= 0, i
= first_med_uuar();; i
= next_uuar(i
)) {
397 static int alloc_high_class_uuar(struct mlx5_uuar_info
*uuari
)
401 for (i
= first_hi_uuar(uuari
); i
< max_uuari(uuari
); i
= next_uuar(i
)) {
402 if (!test_bit(i
, uuari
->bitmap
)) {
403 set_bit(i
, uuari
->bitmap
);
412 static int alloc_med_class_uuar(struct mlx5_uuar_info
*uuari
)
414 int minidx
= first_med_uuar();
417 for (i
= first_med_uuar(); i
< first_hi_uuar(uuari
); i
= next_uuar(i
)) {
418 if (uuari
->count
[i
] < uuari
->count
[minidx
])
422 uuari
->count
[minidx
]++;
426 static int alloc_uuar(struct mlx5_uuar_info
*uuari
,
427 enum mlx5_ib_latency_class lat
)
431 mutex_lock(&uuari
->lock
);
433 case MLX5_IB_LATENCY_CLASS_LOW
:
435 uuari
->count
[uuarn
]++;
438 case MLX5_IB_LATENCY_CLASS_MEDIUM
:
442 uuarn
= alloc_med_class_uuar(uuari
);
445 case MLX5_IB_LATENCY_CLASS_HIGH
:
449 uuarn
= alloc_high_class_uuar(uuari
);
452 case MLX5_IB_LATENCY_CLASS_FAST_PATH
:
456 mutex_unlock(&uuari
->lock
);
461 static void free_med_class_uuar(struct mlx5_uuar_info
*uuari
, int uuarn
)
463 clear_bit(uuarn
, uuari
->bitmap
);
464 --uuari
->count
[uuarn
];
467 static void free_high_class_uuar(struct mlx5_uuar_info
*uuari
, int uuarn
)
469 clear_bit(uuarn
, uuari
->bitmap
);
470 --uuari
->count
[uuarn
];
473 static void free_uuar(struct mlx5_uuar_info
*uuari
, int uuarn
)
475 int nuuars
= uuari
->num_uars
* MLX5_BF_REGS_PER_PAGE
;
476 int high_uuar
= nuuars
- uuari
->num_low_latency_uuars
;
478 mutex_lock(&uuari
->lock
);
480 --uuari
->count
[uuarn
];
484 if (uuarn
< high_uuar
) {
485 free_med_class_uuar(uuari
, uuarn
);
489 free_high_class_uuar(uuari
, uuarn
);
492 mutex_unlock(&uuari
->lock
);
495 static enum mlx5_qp_state
to_mlx5_state(enum ib_qp_state state
)
498 case IB_QPS_RESET
: return MLX5_QP_STATE_RST
;
499 case IB_QPS_INIT
: return MLX5_QP_STATE_INIT
;
500 case IB_QPS_RTR
: return MLX5_QP_STATE_RTR
;
501 case IB_QPS_RTS
: return MLX5_QP_STATE_RTS
;
502 case IB_QPS_SQD
: return MLX5_QP_STATE_SQD
;
503 case IB_QPS_SQE
: return MLX5_QP_STATE_SQER
;
504 case IB_QPS_ERR
: return MLX5_QP_STATE_ERR
;
509 static int to_mlx5_st(enum ib_qp_type type
)
512 case IB_QPT_RC
: return MLX5_QP_ST_RC
;
513 case IB_QPT_UC
: return MLX5_QP_ST_UC
;
514 case IB_QPT_UD
: return MLX5_QP_ST_UD
;
515 case MLX5_IB_QPT_REG_UMR
: return MLX5_QP_ST_REG_UMR
;
517 case IB_QPT_XRC_TGT
: return MLX5_QP_ST_XRC
;
518 case IB_QPT_SMI
: return MLX5_QP_ST_QP0
;
519 case IB_QPT_GSI
: return MLX5_QP_ST_QP1
;
520 case IB_QPT_RAW_IPV6
: return MLX5_QP_ST_RAW_IPV6
;
521 case IB_QPT_RAW_ETHERTYPE
: return MLX5_QP_ST_RAW_ETHERTYPE
;
522 case IB_QPT_RAW_PACKET
:
524 default: return -EINVAL
;
528 static int uuarn_to_uar_index(struct mlx5_uuar_info
*uuari
, int uuarn
)
530 return uuari
->uars
[uuarn
/ MLX5_BF_REGS_PER_PAGE
].index
;
533 static int create_user_qp(struct mlx5_ib_dev
*dev
, struct ib_pd
*pd
,
534 struct mlx5_ib_qp
*qp
, struct ib_udata
*udata
,
535 struct mlx5_create_qp_mbox_in
**in
,
536 struct mlx5_ib_create_qp_resp
*resp
, int *inlen
)
538 struct mlx5_ib_ucontext
*context
;
539 struct mlx5_ib_create_qp ucmd
;
548 err
= ib_copy_from_udata(&ucmd
, udata
, sizeof(ucmd
));
550 mlx5_ib_dbg(dev
, "copy failed\n");
554 context
= to_mucontext(pd
->uobject
->context
);
556 * TBD: should come from the verbs when we have the API
558 uuarn
= alloc_uuar(&context
->uuari
, MLX5_IB_LATENCY_CLASS_HIGH
);
560 mlx5_ib_dbg(dev
, "failed to allocate low latency UUAR\n");
561 mlx5_ib_dbg(dev
, "reverting to medium latency\n");
562 uuarn
= alloc_uuar(&context
->uuari
, MLX5_IB_LATENCY_CLASS_MEDIUM
);
564 mlx5_ib_dbg(dev
, "failed to allocate medium latency UUAR\n");
565 mlx5_ib_dbg(dev
, "reverting to high latency\n");
566 uuarn
= alloc_uuar(&context
->uuari
, MLX5_IB_LATENCY_CLASS_LOW
);
568 mlx5_ib_warn(dev
, "uuar allocation failed\n");
574 uar_index
= uuarn_to_uar_index(&context
->uuari
, uuarn
);
575 mlx5_ib_dbg(dev
, "uuarn 0x%x, uar_index 0x%x\n", uuarn
, uar_index
);
578 qp
->sq
.wqe_shift
= ilog2(MLX5_SEND_WQE_BB
);
579 qp
->sq
.offset
= qp
->rq
.wqe_cnt
<< qp
->rq
.wqe_shift
;
581 err
= set_user_buf_size(dev
, qp
, &ucmd
);
585 if (ucmd
.buf_addr
&& qp
->buf_size
) {
586 qp
->umem
= ib_umem_get(pd
->uobject
->context
, ucmd
.buf_addr
,
588 if (IS_ERR(qp
->umem
)) {
589 mlx5_ib_dbg(dev
, "umem_get failed\n");
590 err
= PTR_ERR(qp
->umem
);
598 mlx5_ib_cont_pages(qp
->umem
, ucmd
.buf_addr
, &npages
, &page_shift
,
600 err
= mlx5_ib_get_buf_offset(ucmd
.buf_addr
, page_shift
, &offset
);
602 mlx5_ib_warn(dev
, "bad offset\n");
605 mlx5_ib_dbg(dev
, "addr 0x%llx, size %d, npages %d, page_shift %d, ncont %d, offset %d\n",
606 ucmd
.buf_addr
, qp
->buf_size
, npages
, page_shift
, ncont
, offset
);
609 *inlen
= sizeof(**in
) + sizeof(*(*in
)->pas
) * ncont
;
610 *in
= mlx5_vzalloc(*inlen
);
616 mlx5_ib_populate_pas(dev
, qp
->umem
, page_shift
, (*in
)->pas
, 0);
617 (*in
)->ctx
.log_pg_sz_remote_qpn
=
618 cpu_to_be32((page_shift
- MLX5_ADAPTER_PAGE_SHIFT
) << 24);
619 (*in
)->ctx
.params2
= cpu_to_be32(offset
<< 6);
621 (*in
)->ctx
.qp_counter_set_usr_page
= cpu_to_be32(uar_index
);
622 resp
->uuar_index
= uuarn
;
625 err
= mlx5_ib_db_map_user(context
, ucmd
.db_addr
, &qp
->db
);
627 mlx5_ib_dbg(dev
, "map failed\n");
631 err
= ib_copy_to_udata(udata
, resp
, sizeof(*resp
));
633 mlx5_ib_dbg(dev
, "copy failed\n");
636 qp
->create_type
= MLX5_QP_USER
;
641 mlx5_ib_db_unmap_user(context
, &qp
->db
);
648 ib_umem_release(qp
->umem
);
651 free_uuar(&context
->uuari
, uuarn
);
655 static void destroy_qp_user(struct ib_pd
*pd
, struct mlx5_ib_qp
*qp
)
657 struct mlx5_ib_ucontext
*context
;
659 context
= to_mucontext(pd
->uobject
->context
);
660 mlx5_ib_db_unmap_user(context
, &qp
->db
);
662 ib_umem_release(qp
->umem
);
663 free_uuar(&context
->uuari
, qp
->uuarn
);
666 static int create_kernel_qp(struct mlx5_ib_dev
*dev
,
667 struct ib_qp_init_attr
*init_attr
,
668 struct mlx5_ib_qp
*qp
,
669 struct mlx5_create_qp_mbox_in
**in
, int *inlen
)
671 enum mlx5_ib_latency_class lc
= MLX5_IB_LATENCY_CLASS_LOW
;
672 struct mlx5_uuar_info
*uuari
;
677 uuari
= &dev
->mdev
->priv
.uuari
;
678 if (init_attr
->create_flags
& ~(IB_QP_CREATE_SIGNATURE_EN
| IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK
))
681 if (init_attr
->qp_type
== MLX5_IB_QPT_REG_UMR
)
682 lc
= MLX5_IB_LATENCY_CLASS_FAST_PATH
;
684 uuarn
= alloc_uuar(uuari
, lc
);
686 mlx5_ib_dbg(dev
, "\n");
690 qp
->bf
= &uuari
->bfs
[uuarn
];
691 uar_index
= qp
->bf
->uar
->index
;
693 err
= calc_sq_size(dev
, init_attr
, qp
);
695 mlx5_ib_dbg(dev
, "err %d\n", err
);
700 qp
->sq
.offset
= qp
->rq
.wqe_cnt
<< qp
->rq
.wqe_shift
;
701 qp
->buf_size
= err
+ (qp
->rq
.wqe_cnt
<< qp
->rq
.wqe_shift
);
703 err
= mlx5_buf_alloc(dev
->mdev
, qp
->buf_size
, PAGE_SIZE
* 2, &qp
->buf
);
705 mlx5_ib_dbg(dev
, "err %d\n", err
);
709 qp
->sq
.qend
= mlx5_get_send_wqe(qp
, qp
->sq
.wqe_cnt
);
710 *inlen
= sizeof(**in
) + sizeof(*(*in
)->pas
) * qp
->buf
.npages
;
711 *in
= mlx5_vzalloc(*inlen
);
716 (*in
)->ctx
.qp_counter_set_usr_page
= cpu_to_be32(uar_index
);
717 (*in
)->ctx
.log_pg_sz_remote_qpn
=
718 cpu_to_be32((qp
->buf
.page_shift
- MLX5_ADAPTER_PAGE_SHIFT
) << 24);
719 /* Set "fast registration enabled" for all kernel QPs */
720 (*in
)->ctx
.params1
|= cpu_to_be32(1 << 11);
721 (*in
)->ctx
.sq_crq_size
|= cpu_to_be16(1 << 4);
723 mlx5_fill_page_array(&qp
->buf
, (*in
)->pas
);
725 err
= mlx5_db_alloc(dev
->mdev
, &qp
->db
);
727 mlx5_ib_dbg(dev
, "err %d\n", err
);
734 qp
->sq
.wrid
= kmalloc(qp
->sq
.wqe_cnt
* sizeof(*qp
->sq
.wrid
), GFP_KERNEL
);
735 qp
->sq
.wr_data
= kmalloc(qp
->sq
.wqe_cnt
* sizeof(*qp
->sq
.wr_data
), GFP_KERNEL
);
736 qp
->rq
.wrid
= kmalloc(qp
->rq
.wqe_cnt
* sizeof(*qp
->rq
.wrid
), GFP_KERNEL
);
737 qp
->sq
.w_list
= kmalloc(qp
->sq
.wqe_cnt
* sizeof(*qp
->sq
.w_list
), GFP_KERNEL
);
738 qp
->sq
.wqe_head
= kmalloc(qp
->sq
.wqe_cnt
* sizeof(*qp
->sq
.wqe_head
), GFP_KERNEL
);
740 if (!qp
->sq
.wrid
|| !qp
->sq
.wr_data
|| !qp
->rq
.wrid
||
741 !qp
->sq
.w_list
|| !qp
->sq
.wqe_head
) {
745 qp
->create_type
= MLX5_QP_KERNEL
;
750 mlx5_db_free(dev
->mdev
, &qp
->db
);
751 kfree(qp
->sq
.wqe_head
);
752 kfree(qp
->sq
.w_list
);
754 kfree(qp
->sq
.wr_data
);
761 mlx5_buf_free(dev
->mdev
, &qp
->buf
);
764 free_uuar(&dev
->mdev
->priv
.uuari
, uuarn
);
768 static void destroy_qp_kernel(struct mlx5_ib_dev
*dev
, struct mlx5_ib_qp
*qp
)
770 mlx5_db_free(dev
->mdev
, &qp
->db
);
771 kfree(qp
->sq
.wqe_head
);
772 kfree(qp
->sq
.w_list
);
774 kfree(qp
->sq
.wr_data
);
776 mlx5_buf_free(dev
->mdev
, &qp
->buf
);
777 free_uuar(&dev
->mdev
->priv
.uuari
, qp
->bf
->uuarn
);
780 static __be32
get_rx_type(struct mlx5_ib_qp
*qp
, struct ib_qp_init_attr
*attr
)
782 if (attr
->srq
|| (attr
->qp_type
== IB_QPT_XRC_TGT
) ||
783 (attr
->qp_type
== IB_QPT_XRC_INI
))
784 return cpu_to_be32(MLX5_SRQ_RQ
);
785 else if (!qp
->has_rq
)
786 return cpu_to_be32(MLX5_ZERO_LEN_RQ
);
788 return cpu_to_be32(MLX5_NON_ZERO_RQ
);
791 static int is_connected(enum ib_qp_type qp_type
)
793 if (qp_type
== IB_QPT_RC
|| qp_type
== IB_QPT_UC
)
799 static int create_qp_common(struct mlx5_ib_dev
*dev
, struct ib_pd
*pd
,
800 struct ib_qp_init_attr
*init_attr
,
801 struct ib_udata
*udata
, struct mlx5_ib_qp
*qp
)
803 struct mlx5_ib_resources
*devr
= &dev
->devr
;
804 struct mlx5_ib_create_qp_resp resp
;
805 struct mlx5_create_qp_mbox_in
*in
;
806 struct mlx5_ib_create_qp ucmd
;
807 int inlen
= sizeof(*in
);
810 mutex_init(&qp
->mutex
);
811 spin_lock_init(&qp
->sq
.lock
);
812 spin_lock_init(&qp
->rq
.lock
);
814 if (init_attr
->create_flags
& IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK
) {
815 if (!(dev
->mdev
->caps
.flags
& MLX5_DEV_CAP_FLAG_BLOCK_MCAST
)) {
816 mlx5_ib_dbg(dev
, "block multicast loopback isn't supported\n");
819 qp
->flags
|= MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK
;
823 if (init_attr
->sq_sig_type
== IB_SIGNAL_ALL_WR
)
824 qp
->sq_signal_bits
= MLX5_WQE_CTRL_CQ_UPDATE
;
826 if (pd
&& pd
->uobject
) {
827 if (ib_copy_from_udata(&ucmd
, udata
, sizeof(ucmd
))) {
828 mlx5_ib_dbg(dev
, "copy failed\n");
832 qp
->wq_sig
= !!(ucmd
.flags
& MLX5_QP_FLAG_SIGNATURE
);
833 qp
->scat_cqe
= !!(ucmd
.flags
& MLX5_QP_FLAG_SCATTER_CQE
);
835 qp
->wq_sig
= !!wq_signature
;
838 qp
->has_rq
= qp_has_rq(init_attr
);
839 err
= set_rq_size(dev
, &init_attr
->cap
, qp
->has_rq
,
840 qp
, (pd
&& pd
->uobject
) ? &ucmd
: NULL
);
842 mlx5_ib_dbg(dev
, "err %d\n", err
);
848 mlx5_ib_dbg(dev
, "requested sq_wqe_count (%d)\n", ucmd
.sq_wqe_count
);
849 if (ucmd
.rq_wqe_shift
!= qp
->rq
.wqe_shift
||
850 ucmd
.rq_wqe_count
!= qp
->rq
.wqe_cnt
) {
851 mlx5_ib_dbg(dev
, "invalid rq params\n");
854 if (ucmd
.sq_wqe_count
> dev
->mdev
->caps
.max_wqes
) {
855 mlx5_ib_dbg(dev
, "requested sq_wqe_count (%d) > max allowed (%d)\n",
856 ucmd
.sq_wqe_count
, dev
->mdev
->caps
.max_wqes
);
859 err
= create_user_qp(dev
, pd
, qp
, udata
, &in
, &resp
, &inlen
);
861 mlx5_ib_dbg(dev
, "err %d\n", err
);
863 err
= create_kernel_qp(dev
, init_attr
, qp
, &in
, &inlen
);
865 mlx5_ib_dbg(dev
, "err %d\n", err
);
867 qp
->pa_lkey
= to_mpd(pd
)->pa_lkey
;
873 in
= mlx5_vzalloc(sizeof(*in
));
877 qp
->create_type
= MLX5_QP_EMPTY
;
880 if (is_sqp(init_attr
->qp_type
))
881 qp
->port
= init_attr
->port_num
;
883 in
->ctx
.flags
= cpu_to_be32(to_mlx5_st(init_attr
->qp_type
) << 16 |
884 MLX5_QP_PM_MIGRATED
<< 11);
886 if (init_attr
->qp_type
!= MLX5_IB_QPT_REG_UMR
)
887 in
->ctx
.flags_pd
= cpu_to_be32(to_mpd(pd
? pd
: devr
->p0
)->pdn
);
889 in
->ctx
.flags_pd
= cpu_to_be32(MLX5_QP_LAT_SENSITIVE
);
892 in
->ctx
.flags_pd
|= cpu_to_be32(MLX5_QP_ENABLE_SIG
);
894 if (qp
->flags
& MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK
)
895 in
->ctx
.flags_pd
|= cpu_to_be32(MLX5_QP_BLOCK_MCAST
);
897 if (qp
->scat_cqe
&& is_connected(init_attr
->qp_type
)) {
901 rcqe_sz
= mlx5_ib_get_cqe_size(dev
, init_attr
->recv_cq
);
902 scqe_sz
= mlx5_ib_get_cqe_size(dev
, init_attr
->send_cq
);
905 in
->ctx
.cs_res
= MLX5_RES_SCAT_DATA64_CQE
;
907 in
->ctx
.cs_res
= MLX5_RES_SCAT_DATA32_CQE
;
909 if (init_attr
->sq_sig_type
== IB_SIGNAL_ALL_WR
) {
911 in
->ctx
.cs_req
= MLX5_REQ_SCAT_DATA64_CQE
;
913 in
->ctx
.cs_req
= MLX5_REQ_SCAT_DATA32_CQE
;
917 if (qp
->rq
.wqe_cnt
) {
918 in
->ctx
.rq_size_stride
= (qp
->rq
.wqe_shift
- 4);
919 in
->ctx
.rq_size_stride
|= ilog2(qp
->rq
.wqe_cnt
) << 3;
922 in
->ctx
.rq_type_srqn
= get_rx_type(qp
, init_attr
);
925 in
->ctx
.sq_crq_size
|= cpu_to_be16(ilog2(qp
->sq
.wqe_cnt
) << 11);
927 in
->ctx
.sq_crq_size
|= cpu_to_be16(0x8000);
929 /* Set default resources */
930 switch (init_attr
->qp_type
) {
932 in
->ctx
.cqn_recv
= cpu_to_be32(to_mcq(devr
->c0
)->mcq
.cqn
);
933 in
->ctx
.cqn_send
= cpu_to_be32(to_mcq(devr
->c0
)->mcq
.cqn
);
934 in
->ctx
.rq_type_srqn
|= cpu_to_be32(to_msrq(devr
->s0
)->msrq
.srqn
);
935 in
->ctx
.xrcd
= cpu_to_be32(to_mxrcd(init_attr
->xrcd
)->xrcdn
);
938 in
->ctx
.cqn_recv
= cpu_to_be32(to_mcq(devr
->c0
)->mcq
.cqn
);
939 in
->ctx
.xrcd
= cpu_to_be32(to_mxrcd(devr
->x1
)->xrcdn
);
940 in
->ctx
.rq_type_srqn
|= cpu_to_be32(to_msrq(devr
->s0
)->msrq
.srqn
);
943 if (init_attr
->srq
) {
944 in
->ctx
.xrcd
= cpu_to_be32(to_mxrcd(devr
->x0
)->xrcdn
);
945 in
->ctx
.rq_type_srqn
|= cpu_to_be32(to_msrq(init_attr
->srq
)->msrq
.srqn
);
947 in
->ctx
.xrcd
= cpu_to_be32(to_mxrcd(devr
->x1
)->xrcdn
);
948 in
->ctx
.rq_type_srqn
|= cpu_to_be32(to_msrq(devr
->s0
)->msrq
.srqn
);
952 if (init_attr
->send_cq
)
953 in
->ctx
.cqn_send
= cpu_to_be32(to_mcq(init_attr
->send_cq
)->mcq
.cqn
);
955 if (init_attr
->recv_cq
)
956 in
->ctx
.cqn_recv
= cpu_to_be32(to_mcq(init_attr
->recv_cq
)->mcq
.cqn
);
958 in
->ctx
.db_rec_addr
= cpu_to_be64(qp
->db
.dma
);
960 err
= mlx5_core_create_qp(dev
->mdev
, &qp
->mqp
, in
, inlen
);
962 mlx5_ib_dbg(dev
, "create qp failed\n");
967 /* Hardware wants QPN written in big-endian order (after
968 * shifting) for send doorbell. Precompute this value to save
969 * a little bit when posting sends.
971 qp
->doorbell_qpn
= swab32(qp
->mqp
.qpn
<< 8);
973 qp
->mqp
.event
= mlx5_ib_qp_event
;
978 if (qp
->create_type
== MLX5_QP_USER
)
979 destroy_qp_user(pd
, qp
);
980 else if (qp
->create_type
== MLX5_QP_KERNEL
)
981 destroy_qp_kernel(dev
, qp
);
987 static void mlx5_ib_lock_cqs(struct mlx5_ib_cq
*send_cq
, struct mlx5_ib_cq
*recv_cq
)
988 __acquires(&send_cq
->lock
) __acquires(&recv_cq
->lock
)
992 if (send_cq
->mcq
.cqn
< recv_cq
->mcq
.cqn
) {
993 spin_lock_irq(&send_cq
->lock
);
994 spin_lock_nested(&recv_cq
->lock
,
995 SINGLE_DEPTH_NESTING
);
996 } else if (send_cq
->mcq
.cqn
== recv_cq
->mcq
.cqn
) {
997 spin_lock_irq(&send_cq
->lock
);
998 __acquire(&recv_cq
->lock
);
1000 spin_lock_irq(&recv_cq
->lock
);
1001 spin_lock_nested(&send_cq
->lock
,
1002 SINGLE_DEPTH_NESTING
);
1005 spin_lock_irq(&send_cq
->lock
);
1007 } else if (recv_cq
) {
1008 spin_lock_irq(&recv_cq
->lock
);
1012 static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq
*send_cq
, struct mlx5_ib_cq
*recv_cq
)
1013 __releases(&send_cq
->lock
) __releases(&recv_cq
->lock
)
1017 if (send_cq
->mcq
.cqn
< recv_cq
->mcq
.cqn
) {
1018 spin_unlock(&recv_cq
->lock
);
1019 spin_unlock_irq(&send_cq
->lock
);
1020 } else if (send_cq
->mcq
.cqn
== recv_cq
->mcq
.cqn
) {
1021 __release(&recv_cq
->lock
);
1022 spin_unlock_irq(&send_cq
->lock
);
1024 spin_unlock(&send_cq
->lock
);
1025 spin_unlock_irq(&recv_cq
->lock
);
1028 spin_unlock_irq(&send_cq
->lock
);
1030 } else if (recv_cq
) {
1031 spin_unlock_irq(&recv_cq
->lock
);
1035 static struct mlx5_ib_pd
*get_pd(struct mlx5_ib_qp
*qp
)
1037 return to_mpd(qp
->ibqp
.pd
);
1040 static void get_cqs(struct mlx5_ib_qp
*qp
,
1041 struct mlx5_ib_cq
**send_cq
, struct mlx5_ib_cq
**recv_cq
)
1043 switch (qp
->ibqp
.qp_type
) {
1044 case IB_QPT_XRC_TGT
:
1048 case MLX5_IB_QPT_REG_UMR
:
1049 case IB_QPT_XRC_INI
:
1050 *send_cq
= to_mcq(qp
->ibqp
.send_cq
);
1059 case IB_QPT_RAW_IPV6
:
1060 case IB_QPT_RAW_ETHERTYPE
:
1061 *send_cq
= to_mcq(qp
->ibqp
.send_cq
);
1062 *recv_cq
= to_mcq(qp
->ibqp
.recv_cq
);
1065 case IB_QPT_RAW_PACKET
:
1074 static void destroy_qp_common(struct mlx5_ib_dev
*dev
, struct mlx5_ib_qp
*qp
)
1076 struct mlx5_ib_cq
*send_cq
, *recv_cq
;
1077 struct mlx5_modify_qp_mbox_in
*in
;
1080 in
= kzalloc(sizeof(*in
), GFP_KERNEL
);
1083 if (qp
->state
!= IB_QPS_RESET
)
1084 if (mlx5_core_qp_modify(dev
->mdev
, to_mlx5_state(qp
->state
),
1085 MLX5_QP_STATE_RST
, in
, sizeof(*in
), &qp
->mqp
))
1086 mlx5_ib_warn(dev
, "mlx5_ib: modify QP %06x to RESET failed\n",
1089 get_cqs(qp
, &send_cq
, &recv_cq
);
1091 if (qp
->create_type
== MLX5_QP_KERNEL
) {
1092 mlx5_ib_lock_cqs(send_cq
, recv_cq
);
1093 __mlx5_ib_cq_clean(recv_cq
, qp
->mqp
.qpn
,
1094 qp
->ibqp
.srq
? to_msrq(qp
->ibqp
.srq
) : NULL
);
1095 if (send_cq
!= recv_cq
)
1096 __mlx5_ib_cq_clean(send_cq
, qp
->mqp
.qpn
, NULL
);
1097 mlx5_ib_unlock_cqs(send_cq
, recv_cq
);
1100 err
= mlx5_core_destroy_qp(dev
->mdev
, &qp
->mqp
);
1102 mlx5_ib_warn(dev
, "failed to destroy QP 0x%x\n", qp
->mqp
.qpn
);
1106 if (qp
->create_type
== MLX5_QP_KERNEL
)
1107 destroy_qp_kernel(dev
, qp
);
1108 else if (qp
->create_type
== MLX5_QP_USER
)
1109 destroy_qp_user(&get_pd(qp
)->ibpd
, qp
);
1112 static const char *ib_qp_type_str(enum ib_qp_type type
)
1116 return "IB_QPT_SMI";
1118 return "IB_QPT_GSI";
1125 case IB_QPT_RAW_IPV6
:
1126 return "IB_QPT_RAW_IPV6";
1127 case IB_QPT_RAW_ETHERTYPE
:
1128 return "IB_QPT_RAW_ETHERTYPE";
1129 case IB_QPT_XRC_INI
:
1130 return "IB_QPT_XRC_INI";
1131 case IB_QPT_XRC_TGT
:
1132 return "IB_QPT_XRC_TGT";
1133 case IB_QPT_RAW_PACKET
:
1134 return "IB_QPT_RAW_PACKET";
1135 case MLX5_IB_QPT_REG_UMR
:
1136 return "MLX5_IB_QPT_REG_UMR";
1139 return "Invalid QP type";
1143 struct ib_qp
*mlx5_ib_create_qp(struct ib_pd
*pd
,
1144 struct ib_qp_init_attr
*init_attr
,
1145 struct ib_udata
*udata
)
1147 struct mlx5_ib_dev
*dev
;
1148 struct mlx5_ib_qp
*qp
;
1153 dev
= to_mdev(pd
->device
);
1155 /* being cautious here */
1156 if (init_attr
->qp_type
!= IB_QPT_XRC_TGT
&&
1157 init_attr
->qp_type
!= MLX5_IB_QPT_REG_UMR
) {
1158 pr_warn("%s: no PD for transport %s\n", __func__
,
1159 ib_qp_type_str(init_attr
->qp_type
));
1160 return ERR_PTR(-EINVAL
);
1162 dev
= to_mdev(to_mxrcd(init_attr
->xrcd
)->ibxrcd
.device
);
1165 switch (init_attr
->qp_type
) {
1166 case IB_QPT_XRC_TGT
:
1167 case IB_QPT_XRC_INI
:
1168 if (!(dev
->mdev
->caps
.flags
& MLX5_DEV_CAP_FLAG_XRC
)) {
1169 mlx5_ib_dbg(dev
, "XRC not supported\n");
1170 return ERR_PTR(-ENOSYS
);
1172 init_attr
->recv_cq
= NULL
;
1173 if (init_attr
->qp_type
== IB_QPT_XRC_TGT
) {
1174 xrcdn
= to_mxrcd(init_attr
->xrcd
)->xrcdn
;
1175 init_attr
->send_cq
= NULL
;
1184 case MLX5_IB_QPT_REG_UMR
:
1185 qp
= kzalloc(sizeof(*qp
), GFP_KERNEL
);
1187 return ERR_PTR(-ENOMEM
);
1189 err
= create_qp_common(dev
, pd
, init_attr
, udata
, qp
);
1191 mlx5_ib_dbg(dev
, "create_qp_common failed\n");
1193 return ERR_PTR(err
);
1196 if (is_qp0(init_attr
->qp_type
))
1197 qp
->ibqp
.qp_num
= 0;
1198 else if (is_qp1(init_attr
->qp_type
))
1199 qp
->ibqp
.qp_num
= 1;
1201 qp
->ibqp
.qp_num
= qp
->mqp
.qpn
;
1203 mlx5_ib_dbg(dev
, "ib qpnum 0x%x, mlx qpn 0x%x, rcqn 0x%x, scqn 0x%x\n",
1204 qp
->ibqp
.qp_num
, qp
->mqp
.qpn
, to_mcq(init_attr
->recv_cq
)->mcq
.cqn
,
1205 to_mcq(init_attr
->send_cq
)->mcq
.cqn
);
1211 case IB_QPT_RAW_IPV6
:
1212 case IB_QPT_RAW_ETHERTYPE
:
1213 case IB_QPT_RAW_PACKET
:
1216 mlx5_ib_dbg(dev
, "unsupported qp type %d\n",
1217 init_attr
->qp_type
);
1218 /* Don't support raw QPs */
1219 return ERR_PTR(-EINVAL
);
1225 int mlx5_ib_destroy_qp(struct ib_qp
*qp
)
1227 struct mlx5_ib_dev
*dev
= to_mdev(qp
->device
);
1228 struct mlx5_ib_qp
*mqp
= to_mqp(qp
);
1230 destroy_qp_common(dev
, mqp
);
1237 static __be32
to_mlx5_access_flags(struct mlx5_ib_qp
*qp
, const struct ib_qp_attr
*attr
,
1240 u32 hw_access_flags
= 0;
1244 if (attr_mask
& IB_QP_MAX_DEST_RD_ATOMIC
)
1245 dest_rd_atomic
= attr
->max_dest_rd_atomic
;
1247 dest_rd_atomic
= qp
->resp_depth
;
1249 if (attr_mask
& IB_QP_ACCESS_FLAGS
)
1250 access_flags
= attr
->qp_access_flags
;
1252 access_flags
= qp
->atomic_rd_en
;
1254 if (!dest_rd_atomic
)
1255 access_flags
&= IB_ACCESS_REMOTE_WRITE
;
1257 if (access_flags
& IB_ACCESS_REMOTE_READ
)
1258 hw_access_flags
|= MLX5_QP_BIT_RRE
;
1259 if (access_flags
& IB_ACCESS_REMOTE_ATOMIC
)
1260 hw_access_flags
|= (MLX5_QP_BIT_RAE
| MLX5_ATOMIC_MODE_CX
);
1261 if (access_flags
& IB_ACCESS_REMOTE_WRITE
)
1262 hw_access_flags
|= MLX5_QP_BIT_RWE
;
1264 return cpu_to_be32(hw_access_flags
);
1268 MLX5_PATH_FLAG_FL
= 1 << 0,
1269 MLX5_PATH_FLAG_FREE_AR
= 1 << 1,
1270 MLX5_PATH_FLAG_COUNTER
= 1 << 2,
1273 static int ib_rate_to_mlx5(struct mlx5_ib_dev
*dev
, u8 rate
)
1275 if (rate
== IB_RATE_PORT_CURRENT
) {
1277 } else if (rate
< IB_RATE_2_5_GBPS
|| rate
> IB_RATE_300_GBPS
) {
1280 while (rate
!= IB_RATE_2_5_GBPS
&&
1281 !(1 << (rate
+ MLX5_STAT_RATE_OFFSET
) &
1282 dev
->mdev
->caps
.stat_rate_support
))
1286 return rate
+ MLX5_STAT_RATE_OFFSET
;
1289 static int mlx5_set_path(struct mlx5_ib_dev
*dev
, const struct ib_ah_attr
*ah
,
1290 struct mlx5_qp_path
*path
, u8 port
, int attr_mask
,
1291 u32 path_flags
, const struct ib_qp_attr
*attr
)
1295 path
->fl
= (path_flags
& MLX5_PATH_FLAG_FL
) ? 0x80 : 0;
1296 path
->free_ar
= (path_flags
& MLX5_PATH_FLAG_FREE_AR
) ? 0x80 : 0;
1298 if (attr_mask
& IB_QP_PKEY_INDEX
)
1299 path
->pkey_index
= attr
->pkey_index
;
1301 path
->grh_mlid
= ah
->src_path_bits
& 0x7f;
1302 path
->rlid
= cpu_to_be16(ah
->dlid
);
1304 if (ah
->ah_flags
& IB_AH_GRH
) {
1305 path
->grh_mlid
|= 1 << 7;
1306 path
->mgid_index
= ah
->grh
.sgid_index
;
1307 path
->hop_limit
= ah
->grh
.hop_limit
;
1308 path
->tclass_flowlabel
=
1309 cpu_to_be32((ah
->grh
.traffic_class
<< 20) |
1310 (ah
->grh
.flow_label
));
1311 memcpy(path
->rgid
, ah
->grh
.dgid
.raw
, 16);
1314 err
= ib_rate_to_mlx5(dev
, ah
->static_rate
);
1317 path
->static_rate
= err
;
1320 if (ah
->ah_flags
& IB_AH_GRH
) {
1321 if (ah
->grh
.sgid_index
>= dev
->mdev
->caps
.port
[port
- 1].gid_table_len
) {
1322 pr_err(KERN_ERR
"sgid_index (%u) too large. max is %d\n",
1323 ah
->grh
.sgid_index
, dev
->mdev
->caps
.port
[port
- 1].gid_table_len
);
1327 path
->grh_mlid
|= 1 << 7;
1328 path
->mgid_index
= ah
->grh
.sgid_index
;
1329 path
->hop_limit
= ah
->grh
.hop_limit
;
1330 path
->tclass_flowlabel
=
1331 cpu_to_be32((ah
->grh
.traffic_class
<< 20) |
1332 (ah
->grh
.flow_label
));
1333 memcpy(path
->rgid
, ah
->grh
.dgid
.raw
, 16);
1336 if (attr_mask
& IB_QP_TIMEOUT
)
1337 path
->ackto_lt
= attr
->timeout
<< 3;
1339 path
->sl
= ah
->sl
& 0xf;
1344 static enum mlx5_qp_optpar opt_mask
[MLX5_QP_NUM_STATE
][MLX5_QP_NUM_STATE
][MLX5_QP_ST_MAX
] = {
1345 [MLX5_QP_STATE_INIT
] = {
1346 [MLX5_QP_STATE_INIT
] = {
1347 [MLX5_QP_ST_RC
] = MLX5_QP_OPTPAR_RRE
|
1348 MLX5_QP_OPTPAR_RAE
|
1349 MLX5_QP_OPTPAR_RWE
|
1350 MLX5_QP_OPTPAR_PKEY_INDEX
|
1351 MLX5_QP_OPTPAR_PRI_PORT
,
1352 [MLX5_QP_ST_UC
] = MLX5_QP_OPTPAR_RWE
|
1353 MLX5_QP_OPTPAR_PKEY_INDEX
|
1354 MLX5_QP_OPTPAR_PRI_PORT
,
1355 [MLX5_QP_ST_UD
] = MLX5_QP_OPTPAR_PKEY_INDEX
|
1356 MLX5_QP_OPTPAR_Q_KEY
|
1357 MLX5_QP_OPTPAR_PRI_PORT
,
1359 [MLX5_QP_STATE_RTR
] = {
1360 [MLX5_QP_ST_RC
] = MLX5_QP_OPTPAR_ALT_ADDR_PATH
|
1361 MLX5_QP_OPTPAR_RRE
|
1362 MLX5_QP_OPTPAR_RAE
|
1363 MLX5_QP_OPTPAR_RWE
|
1364 MLX5_QP_OPTPAR_PKEY_INDEX
,
1365 [MLX5_QP_ST_UC
] = MLX5_QP_OPTPAR_ALT_ADDR_PATH
|
1366 MLX5_QP_OPTPAR_RWE
|
1367 MLX5_QP_OPTPAR_PKEY_INDEX
,
1368 [MLX5_QP_ST_UD
] = MLX5_QP_OPTPAR_PKEY_INDEX
|
1369 MLX5_QP_OPTPAR_Q_KEY
,
1370 [MLX5_QP_ST_MLX
] = MLX5_QP_OPTPAR_PKEY_INDEX
|
1371 MLX5_QP_OPTPAR_Q_KEY
,
1372 [MLX5_QP_ST_XRC
] = MLX5_QP_OPTPAR_ALT_ADDR_PATH
|
1373 MLX5_QP_OPTPAR_RRE
|
1374 MLX5_QP_OPTPAR_RAE
|
1375 MLX5_QP_OPTPAR_RWE
|
1376 MLX5_QP_OPTPAR_PKEY_INDEX
,
1379 [MLX5_QP_STATE_RTR
] = {
1380 [MLX5_QP_STATE_RTS
] = {
1381 [MLX5_QP_ST_RC
] = MLX5_QP_OPTPAR_ALT_ADDR_PATH
|
1382 MLX5_QP_OPTPAR_RRE
|
1383 MLX5_QP_OPTPAR_RAE
|
1384 MLX5_QP_OPTPAR_RWE
|
1385 MLX5_QP_OPTPAR_PM_STATE
|
1386 MLX5_QP_OPTPAR_RNR_TIMEOUT
,
1387 [MLX5_QP_ST_UC
] = MLX5_QP_OPTPAR_ALT_ADDR_PATH
|
1388 MLX5_QP_OPTPAR_RWE
|
1389 MLX5_QP_OPTPAR_PM_STATE
,
1390 [MLX5_QP_ST_UD
] = MLX5_QP_OPTPAR_Q_KEY
,
1393 [MLX5_QP_STATE_RTS
] = {
1394 [MLX5_QP_STATE_RTS
] = {
1395 [MLX5_QP_ST_RC
] = MLX5_QP_OPTPAR_RRE
|
1396 MLX5_QP_OPTPAR_RAE
|
1397 MLX5_QP_OPTPAR_RWE
|
1398 MLX5_QP_OPTPAR_RNR_TIMEOUT
|
1399 MLX5_QP_OPTPAR_PM_STATE
|
1400 MLX5_QP_OPTPAR_ALT_ADDR_PATH
,
1401 [MLX5_QP_ST_UC
] = MLX5_QP_OPTPAR_RWE
|
1402 MLX5_QP_OPTPAR_PM_STATE
|
1403 MLX5_QP_OPTPAR_ALT_ADDR_PATH
,
1404 [MLX5_QP_ST_UD
] = MLX5_QP_OPTPAR_Q_KEY
|
1405 MLX5_QP_OPTPAR_SRQN
|
1406 MLX5_QP_OPTPAR_CQN_RCV
,
1409 [MLX5_QP_STATE_SQER
] = {
1410 [MLX5_QP_STATE_RTS
] = {
1411 [MLX5_QP_ST_UD
] = MLX5_QP_OPTPAR_Q_KEY
,
1412 [MLX5_QP_ST_MLX
] = MLX5_QP_OPTPAR_Q_KEY
,
1413 [MLX5_QP_ST_UC
] = MLX5_QP_OPTPAR_RWE
,
1414 [MLX5_QP_ST_RC
] = MLX5_QP_OPTPAR_RNR_TIMEOUT
|
1415 MLX5_QP_OPTPAR_RWE
|
1416 MLX5_QP_OPTPAR_RAE
|
1422 static int ib_nr_to_mlx5_nr(int ib_mask
)
1427 case IB_QP_CUR_STATE
:
1429 case IB_QP_EN_SQD_ASYNC_NOTIFY
:
1431 case IB_QP_ACCESS_FLAGS
:
1432 return MLX5_QP_OPTPAR_RWE
| MLX5_QP_OPTPAR_RRE
|
1434 case IB_QP_PKEY_INDEX
:
1435 return MLX5_QP_OPTPAR_PKEY_INDEX
;
1437 return MLX5_QP_OPTPAR_PRI_PORT
;
1439 return MLX5_QP_OPTPAR_Q_KEY
;
1441 return MLX5_QP_OPTPAR_PRIMARY_ADDR_PATH
|
1442 MLX5_QP_OPTPAR_PRI_PORT
;
1443 case IB_QP_PATH_MTU
:
1446 return MLX5_QP_OPTPAR_ACK_TIMEOUT
;
1447 case IB_QP_RETRY_CNT
:
1448 return MLX5_QP_OPTPAR_RETRY_COUNT
;
1449 case IB_QP_RNR_RETRY
:
1450 return MLX5_QP_OPTPAR_RNR_RETRY
;
1453 case IB_QP_MAX_QP_RD_ATOMIC
:
1454 return MLX5_QP_OPTPAR_SRA_MAX
;
1455 case IB_QP_ALT_PATH
:
1456 return MLX5_QP_OPTPAR_ALT_ADDR_PATH
;
1457 case IB_QP_MIN_RNR_TIMER
:
1458 return MLX5_QP_OPTPAR_RNR_TIMEOUT
;
1461 case IB_QP_MAX_DEST_RD_ATOMIC
:
1462 return MLX5_QP_OPTPAR_RRA_MAX
| MLX5_QP_OPTPAR_RWE
|
1463 MLX5_QP_OPTPAR_RRE
| MLX5_QP_OPTPAR_RAE
;
1464 case IB_QP_PATH_MIG_STATE
:
1465 return MLX5_QP_OPTPAR_PM_STATE
;
1468 case IB_QP_DEST_QPN
:
1474 static int ib_mask_to_mlx5_opt(int ib_mask
)
1479 for (i
= 0; i
< 8 * sizeof(int); i
++) {
1480 if ((1 << i
) & ib_mask
)
1481 result
|= ib_nr_to_mlx5_nr(1 << i
);
1487 static int __mlx5_ib_modify_qp(struct ib_qp
*ibqp
,
1488 const struct ib_qp_attr
*attr
, int attr_mask
,
1489 enum ib_qp_state cur_state
, enum ib_qp_state new_state
)
1491 struct mlx5_ib_dev
*dev
= to_mdev(ibqp
->device
);
1492 struct mlx5_ib_qp
*qp
= to_mqp(ibqp
);
1493 struct mlx5_ib_cq
*send_cq
, *recv_cq
;
1494 struct mlx5_qp_context
*context
;
1495 struct mlx5_modify_qp_mbox_in
*in
;
1496 struct mlx5_ib_pd
*pd
;
1497 enum mlx5_qp_state mlx5_cur
, mlx5_new
;
1498 enum mlx5_qp_optpar optpar
;
1503 in
= kzalloc(sizeof(*in
), GFP_KERNEL
);
1508 err
= to_mlx5_st(ibqp
->qp_type
);
1512 context
->flags
= cpu_to_be32(err
<< 16);
1514 if (!(attr_mask
& IB_QP_PATH_MIG_STATE
)) {
1515 context
->flags
|= cpu_to_be32(MLX5_QP_PM_MIGRATED
<< 11);
1517 switch (attr
->path_mig_state
) {
1518 case IB_MIG_MIGRATED
:
1519 context
->flags
|= cpu_to_be32(MLX5_QP_PM_MIGRATED
<< 11);
1522 context
->flags
|= cpu_to_be32(MLX5_QP_PM_REARM
<< 11);
1525 context
->flags
|= cpu_to_be32(MLX5_QP_PM_ARMED
<< 11);
1530 if (ibqp
->qp_type
== IB_QPT_GSI
|| ibqp
->qp_type
== IB_QPT_SMI
) {
1531 context
->mtu_msgmax
= (IB_MTU_256
<< 5) | 8;
1532 } else if (ibqp
->qp_type
== IB_QPT_UD
||
1533 ibqp
->qp_type
== MLX5_IB_QPT_REG_UMR
) {
1534 context
->mtu_msgmax
= (IB_MTU_4096
<< 5) | 12;
1535 } else if (attr_mask
& IB_QP_PATH_MTU
) {
1536 if (attr
->path_mtu
< IB_MTU_256
||
1537 attr
->path_mtu
> IB_MTU_4096
) {
1538 mlx5_ib_warn(dev
, "invalid mtu %d\n", attr
->path_mtu
);
1542 context
->mtu_msgmax
= (attr
->path_mtu
<< 5) | dev
->mdev
->caps
.log_max_msg
;
1545 if (attr_mask
& IB_QP_DEST_QPN
)
1546 context
->log_pg_sz_remote_qpn
= cpu_to_be32(attr
->dest_qp_num
);
1548 if (attr_mask
& IB_QP_PKEY_INDEX
)
1549 context
->pri_path
.pkey_index
= attr
->pkey_index
;
1551 /* todo implement counter_index functionality */
1553 if (is_sqp(ibqp
->qp_type
))
1554 context
->pri_path
.port
= qp
->port
;
1556 if (attr_mask
& IB_QP_PORT
)
1557 context
->pri_path
.port
= attr
->port_num
;
1559 if (attr_mask
& IB_QP_AV
) {
1560 err
= mlx5_set_path(dev
, &attr
->ah_attr
, &context
->pri_path
,
1561 attr_mask
& IB_QP_PORT
? attr
->port_num
: qp
->port
,
1562 attr_mask
, 0, attr
);
1567 if (attr_mask
& IB_QP_TIMEOUT
)
1568 context
->pri_path
.ackto_lt
|= attr
->timeout
<< 3;
1570 if (attr_mask
& IB_QP_ALT_PATH
) {
1571 err
= mlx5_set_path(dev
, &attr
->alt_ah_attr
, &context
->alt_path
,
1572 attr
->alt_port_num
, attr_mask
, 0, attr
);
1578 get_cqs(qp
, &send_cq
, &recv_cq
);
1580 context
->flags_pd
= cpu_to_be32(pd
? pd
->pdn
: to_mpd(dev
->devr
.p0
)->pdn
);
1581 context
->cqn_send
= send_cq
? cpu_to_be32(send_cq
->mcq
.cqn
) : 0;
1582 context
->cqn_recv
= recv_cq
? cpu_to_be32(recv_cq
->mcq
.cqn
) : 0;
1583 context
->params1
= cpu_to_be32(MLX5_IB_ACK_REQ_FREQ
<< 28);
1585 if (attr_mask
& IB_QP_RNR_RETRY
)
1586 context
->params1
|= cpu_to_be32(attr
->rnr_retry
<< 13);
1588 if (attr_mask
& IB_QP_RETRY_CNT
)
1589 context
->params1
|= cpu_to_be32(attr
->retry_cnt
<< 16);
1591 if (attr_mask
& IB_QP_MAX_QP_RD_ATOMIC
) {
1592 if (attr
->max_rd_atomic
)
1594 cpu_to_be32(fls(attr
->max_rd_atomic
- 1) << 21);
1597 if (attr_mask
& IB_QP_SQ_PSN
)
1598 context
->next_send_psn
= cpu_to_be32(attr
->sq_psn
);
1600 if (attr_mask
& IB_QP_MAX_DEST_RD_ATOMIC
) {
1601 if (attr
->max_dest_rd_atomic
)
1603 cpu_to_be32(fls(attr
->max_dest_rd_atomic
- 1) << 21);
1606 if (attr_mask
& (IB_QP_ACCESS_FLAGS
| IB_QP_MAX_DEST_RD_ATOMIC
))
1607 context
->params2
|= to_mlx5_access_flags(qp
, attr
, attr_mask
);
1609 if (attr_mask
& IB_QP_MIN_RNR_TIMER
)
1610 context
->rnr_nextrecvpsn
|= cpu_to_be32(attr
->min_rnr_timer
<< 24);
1612 if (attr_mask
& IB_QP_RQ_PSN
)
1613 context
->rnr_nextrecvpsn
|= cpu_to_be32(attr
->rq_psn
);
1615 if (attr_mask
& IB_QP_QKEY
)
1616 context
->qkey
= cpu_to_be32(attr
->qkey
);
1618 if (qp
->rq
.wqe_cnt
&& cur_state
== IB_QPS_RESET
&& new_state
== IB_QPS_INIT
)
1619 context
->db_rec_addr
= cpu_to_be64(qp
->db
.dma
);
1621 if (cur_state
== IB_QPS_RTS
&& new_state
== IB_QPS_SQD
&&
1622 attr_mask
& IB_QP_EN_SQD_ASYNC_NOTIFY
&& attr
->en_sqd_async_notify
)
1627 if (!ibqp
->uobject
&& cur_state
== IB_QPS_RESET
&& new_state
== IB_QPS_INIT
)
1628 context
->sq_crq_size
|= cpu_to_be16(1 << 4);
1631 mlx5_cur
= to_mlx5_state(cur_state
);
1632 mlx5_new
= to_mlx5_state(new_state
);
1633 mlx5_st
= to_mlx5_st(ibqp
->qp_type
);
1637 optpar
= ib_mask_to_mlx5_opt(attr_mask
);
1638 optpar
&= opt_mask
[mlx5_cur
][mlx5_new
][mlx5_st
];
1639 in
->optparam
= cpu_to_be32(optpar
);
1640 err
= mlx5_core_qp_modify(dev
->mdev
, to_mlx5_state(cur_state
),
1641 to_mlx5_state(new_state
), in
, sqd_event
,
1646 qp
->state
= new_state
;
1648 if (attr_mask
& IB_QP_ACCESS_FLAGS
)
1649 qp
->atomic_rd_en
= attr
->qp_access_flags
;
1650 if (attr_mask
& IB_QP_MAX_DEST_RD_ATOMIC
)
1651 qp
->resp_depth
= attr
->max_dest_rd_atomic
;
1652 if (attr_mask
& IB_QP_PORT
)
1653 qp
->port
= attr
->port_num
;
1654 if (attr_mask
& IB_QP_ALT_PATH
)
1655 qp
->alt_port
= attr
->alt_port_num
;
1658 * If we moved a kernel QP to RESET, clean up all old CQ
1659 * entries and reinitialize the QP.
1661 if (new_state
== IB_QPS_RESET
&& !ibqp
->uobject
) {
1662 mlx5_ib_cq_clean(recv_cq
, qp
->mqp
.qpn
,
1663 ibqp
->srq
? to_msrq(ibqp
->srq
) : NULL
);
1664 if (send_cq
!= recv_cq
)
1665 mlx5_ib_cq_clean(send_cq
, qp
->mqp
.qpn
, NULL
);
1671 qp
->sq
.cur_post
= 0;
1672 qp
->sq
.last_poll
= 0;
1673 qp
->db
.db
[MLX5_RCV_DBR
] = 0;
1674 qp
->db
.db
[MLX5_SND_DBR
] = 0;
1682 int mlx5_ib_modify_qp(struct ib_qp
*ibqp
, struct ib_qp_attr
*attr
,
1683 int attr_mask
, struct ib_udata
*udata
)
1685 struct mlx5_ib_dev
*dev
= to_mdev(ibqp
->device
);
1686 struct mlx5_ib_qp
*qp
= to_mqp(ibqp
);
1687 enum ib_qp_state cur_state
, new_state
;
1691 mutex_lock(&qp
->mutex
);
1693 cur_state
= attr_mask
& IB_QP_CUR_STATE
? attr
->cur_qp_state
: qp
->state
;
1694 new_state
= attr_mask
& IB_QP_STATE
? attr
->qp_state
: cur_state
;
1696 if (ibqp
->qp_type
!= MLX5_IB_QPT_REG_UMR
&&
1697 !ib_modify_qp_is_ok(cur_state
, new_state
, ibqp
->qp_type
, attr_mask
,
1698 IB_LINK_LAYER_UNSPECIFIED
))
1701 if ((attr_mask
& IB_QP_PORT
) &&
1702 (attr
->port_num
== 0 || attr
->port_num
> dev
->mdev
->caps
.num_ports
))
1705 if (attr_mask
& IB_QP_PKEY_INDEX
) {
1706 port
= attr_mask
& IB_QP_PORT
? attr
->port_num
: qp
->port
;
1707 if (attr
->pkey_index
>= dev
->mdev
->caps
.port
[port
- 1].pkey_table_len
)
1711 if (attr_mask
& IB_QP_MAX_QP_RD_ATOMIC
&&
1712 attr
->max_rd_atomic
> dev
->mdev
->caps
.max_ra_res_qp
)
1715 if (attr_mask
& IB_QP_MAX_DEST_RD_ATOMIC
&&
1716 attr
->max_dest_rd_atomic
> dev
->mdev
->caps
.max_ra_req_qp
)
1719 if (cur_state
== new_state
&& cur_state
== IB_QPS_RESET
) {
1724 err
= __mlx5_ib_modify_qp(ibqp
, attr
, attr_mask
, cur_state
, new_state
);
1727 mutex_unlock(&qp
->mutex
);
1731 static int mlx5_wq_overflow(struct mlx5_ib_wq
*wq
, int nreq
, struct ib_cq
*ib_cq
)
1733 struct mlx5_ib_cq
*cq
;
1736 cur
= wq
->head
- wq
->tail
;
1737 if (likely(cur
+ nreq
< wq
->max_post
))
1741 spin_lock(&cq
->lock
);
1742 cur
= wq
->head
- wq
->tail
;
1743 spin_unlock(&cq
->lock
);
1745 return cur
+ nreq
>= wq
->max_post
;
1748 static __always_inline
void set_raddr_seg(struct mlx5_wqe_raddr_seg
*rseg
,
1749 u64 remote_addr
, u32 rkey
)
1751 rseg
->raddr
= cpu_to_be64(remote_addr
);
1752 rseg
->rkey
= cpu_to_be32(rkey
);
1756 static void set_datagram_seg(struct mlx5_wqe_datagram_seg
*dseg
,
1757 struct ib_send_wr
*wr
)
1759 memcpy(&dseg
->av
, &to_mah(wr
->wr
.ud
.ah
)->av
, sizeof(struct mlx5_av
));
1760 dseg
->av
.dqp_dct
= cpu_to_be32(wr
->wr
.ud
.remote_qpn
| MLX5_EXTENDED_UD_AV
);
1761 dseg
->av
.key
.qkey
.qkey
= cpu_to_be32(wr
->wr
.ud
.remote_qkey
);
1764 static void set_data_ptr_seg(struct mlx5_wqe_data_seg
*dseg
, struct ib_sge
*sg
)
1766 dseg
->byte_count
= cpu_to_be32(sg
->length
);
1767 dseg
->lkey
= cpu_to_be32(sg
->lkey
);
1768 dseg
->addr
= cpu_to_be64(sg
->addr
);
1771 static __be16
get_klm_octo(int npages
)
1773 return cpu_to_be16(ALIGN(npages
, 8) / 2);
1776 static __be64
frwr_mkey_mask(void)
1780 result
= MLX5_MKEY_MASK_LEN
|
1781 MLX5_MKEY_MASK_PAGE_SIZE
|
1782 MLX5_MKEY_MASK_START_ADDR
|
1783 MLX5_MKEY_MASK_EN_RINVAL
|
1784 MLX5_MKEY_MASK_KEY
|
1790 MLX5_MKEY_MASK_SMALL_FENCE
|
1791 MLX5_MKEY_MASK_FREE
;
1793 return cpu_to_be64(result
);
1796 static __be64
sig_mkey_mask(void)
1800 result
= MLX5_MKEY_MASK_LEN
|
1801 MLX5_MKEY_MASK_PAGE_SIZE
|
1802 MLX5_MKEY_MASK_START_ADDR
|
1803 MLX5_MKEY_MASK_EN_SIGERR
|
1804 MLX5_MKEY_MASK_EN_RINVAL
|
1805 MLX5_MKEY_MASK_KEY
|
1810 MLX5_MKEY_MASK_SMALL_FENCE
|
1811 MLX5_MKEY_MASK_FREE
|
1812 MLX5_MKEY_MASK_BSF_EN
;
1814 return cpu_to_be64(result
);
1817 static void set_frwr_umr_segment(struct mlx5_wqe_umr_ctrl_seg
*umr
,
1818 struct ib_send_wr
*wr
, int li
)
1820 memset(umr
, 0, sizeof(*umr
));
1823 umr
->mkey_mask
= cpu_to_be64(MLX5_MKEY_MASK_FREE
);
1824 umr
->flags
= 1 << 7;
1828 umr
->flags
= (1 << 5); /* fail if not free */
1829 umr
->klm_octowords
= get_klm_octo(wr
->wr
.fast_reg
.page_list_len
);
1830 umr
->mkey_mask
= frwr_mkey_mask();
1833 static void set_reg_umr_segment(struct mlx5_wqe_umr_ctrl_seg
*umr
,
1834 struct ib_send_wr
*wr
)
1836 struct umr_wr
*umrwr
= (struct umr_wr
*)&wr
->wr
.fast_reg
;
1839 memset(umr
, 0, sizeof(*umr
));
1841 if (!(wr
->send_flags
& MLX5_IB_SEND_UMR_UNREG
)) {
1842 umr
->flags
= 1 << 5; /* fail if not free */
1843 umr
->klm_octowords
= get_klm_octo(umrwr
->npages
);
1844 mask
= MLX5_MKEY_MASK_LEN
|
1845 MLX5_MKEY_MASK_PAGE_SIZE
|
1846 MLX5_MKEY_MASK_START_ADDR
|
1850 MLX5_MKEY_MASK_KEY
|
1854 MLX5_MKEY_MASK_FREE
;
1855 umr
->mkey_mask
= cpu_to_be64(mask
);
1857 umr
->flags
= 2 << 5; /* fail if free */
1858 mask
= MLX5_MKEY_MASK_FREE
;
1859 umr
->mkey_mask
= cpu_to_be64(mask
);
1863 umr
->flags
|= (1 << 7); /* inline */
1866 static u8
get_umr_flags(int acc
)
1868 return (acc
& IB_ACCESS_REMOTE_ATOMIC
? MLX5_PERM_ATOMIC
: 0) |
1869 (acc
& IB_ACCESS_REMOTE_WRITE
? MLX5_PERM_REMOTE_WRITE
: 0) |
1870 (acc
& IB_ACCESS_REMOTE_READ
? MLX5_PERM_REMOTE_READ
: 0) |
1871 (acc
& IB_ACCESS_LOCAL_WRITE
? MLX5_PERM_LOCAL_WRITE
: 0) |
1872 MLX5_PERM_LOCAL_READ
| MLX5_PERM_UMR_EN
;
1875 static void set_mkey_segment(struct mlx5_mkey_seg
*seg
, struct ib_send_wr
*wr
,
1878 memset(seg
, 0, sizeof(*seg
));
1880 seg
->status
= 1 << 6;
1884 seg
->flags
= get_umr_flags(wr
->wr
.fast_reg
.access_flags
) |
1885 MLX5_ACCESS_MODE_MTT
;
1886 *writ
= seg
->flags
& (MLX5_PERM_LOCAL_WRITE
| IB_ACCESS_REMOTE_WRITE
);
1887 seg
->qpn_mkey7_0
= cpu_to_be32((wr
->wr
.fast_reg
.rkey
& 0xff) | 0xffffff00);
1888 seg
->flags_pd
= cpu_to_be32(MLX5_MKEY_REMOTE_INVAL
);
1889 seg
->start_addr
= cpu_to_be64(wr
->wr
.fast_reg
.iova_start
);
1890 seg
->len
= cpu_to_be64(wr
->wr
.fast_reg
.length
);
1891 seg
->xlt_oct_size
= cpu_to_be32((wr
->wr
.fast_reg
.page_list_len
+ 1) / 2);
1892 seg
->log2_page_size
= wr
->wr
.fast_reg
.page_shift
;
1895 static void set_reg_mkey_segment(struct mlx5_mkey_seg
*seg
, struct ib_send_wr
*wr
)
1897 memset(seg
, 0, sizeof(*seg
));
1898 if (wr
->send_flags
& MLX5_IB_SEND_UMR_UNREG
) {
1899 seg
->status
= 1 << 6;
1903 seg
->flags
= convert_access(wr
->wr
.fast_reg
.access_flags
);
1904 seg
->flags_pd
= cpu_to_be32(to_mpd((struct ib_pd
*)wr
->wr
.fast_reg
.page_list
)->pdn
);
1905 seg
->start_addr
= cpu_to_be64(wr
->wr
.fast_reg
.iova_start
);
1906 seg
->len
= cpu_to_be64(wr
->wr
.fast_reg
.length
);
1907 seg
->log2_page_size
= wr
->wr
.fast_reg
.page_shift
;
1908 seg
->qpn_mkey7_0
= cpu_to_be32(0xffffff00 |
1909 mlx5_mkey_variant(wr
->wr
.fast_reg
.rkey
));
1912 static void set_frwr_pages(struct mlx5_wqe_data_seg
*dseg
,
1913 struct ib_send_wr
*wr
,
1914 struct mlx5_core_dev
*mdev
,
1915 struct mlx5_ib_pd
*pd
,
1918 struct mlx5_ib_fast_reg_page_list
*mfrpl
= to_mfrpl(wr
->wr
.fast_reg
.page_list
);
1919 u64
*page_list
= wr
->wr
.fast_reg
.page_list
->page_list
;
1920 u64 perm
= MLX5_EN_RD
| (writ
? MLX5_EN_WR
: 0);
1923 for (i
= 0; i
< wr
->wr
.fast_reg
.page_list_len
; i
++)
1924 mfrpl
->mapped_page_list
[i
] = cpu_to_be64(page_list
[i
] | perm
);
1925 dseg
->addr
= cpu_to_be64(mfrpl
->map
);
1926 dseg
->byte_count
= cpu_to_be32(ALIGN(sizeof(u64
) * wr
->wr
.fast_reg
.page_list_len
, 64));
1927 dseg
->lkey
= cpu_to_be32(pd
->pa_lkey
);
1930 static __be32
send_ieth(struct ib_send_wr
*wr
)
1932 switch (wr
->opcode
) {
1933 case IB_WR_SEND_WITH_IMM
:
1934 case IB_WR_RDMA_WRITE_WITH_IMM
:
1935 return wr
->ex
.imm_data
;
1937 case IB_WR_SEND_WITH_INV
:
1938 return cpu_to_be32(wr
->ex
.invalidate_rkey
);
1945 static u8
calc_sig(void *wqe
, int size
)
1951 for (i
= 0; i
< size
; i
++)
1957 static u8
wq_sig(void *wqe
)
1959 return calc_sig(wqe
, (*((u8
*)wqe
+ 8) & 0x3f) << 4);
1962 static int set_data_inl_seg(struct mlx5_ib_qp
*qp
, struct ib_send_wr
*wr
,
1965 struct mlx5_wqe_inline_seg
*seg
;
1966 void *qend
= qp
->sq
.qend
;
1974 wqe
+= sizeof(*seg
);
1975 for (i
= 0; i
< wr
->num_sge
; i
++) {
1976 addr
= (void *)(unsigned long)(wr
->sg_list
[i
].addr
);
1977 len
= wr
->sg_list
[i
].length
;
1980 if (unlikely(inl
> qp
->max_inline_data
))
1983 if (unlikely(wqe
+ len
> qend
)) {
1985 memcpy(wqe
, addr
, copy
);
1988 wqe
= mlx5_get_send_wqe(qp
, 0);
1990 memcpy(wqe
, addr
, len
);
1994 seg
->byte_count
= cpu_to_be32(inl
| MLX5_INLINE_SEG
);
1996 *sz
= ALIGN(inl
+ sizeof(seg
->byte_count
), 16) / 16;
2001 static u16
prot_field_size(enum ib_signature_type type
)
2004 case IB_SIG_TYPE_T10_DIF
:
2005 return MLX5_DIF_SIZE
;
2011 static u8
bs_selector(int block_size
)
2013 switch (block_size
) {
2014 case 512: return 0x1;
2015 case 520: return 0x2;
2016 case 4096: return 0x3;
2017 case 4160: return 0x4;
2018 case 1073741824: return 0x5;
2023 static int format_selector(struct ib_sig_attrs
*attr
,
2024 struct ib_sig_domain
*domain
,
2028 #define FORMAT_DIF_NONE 0
2029 #define FORMAT_DIF_CRC_INC 8
2030 #define FORMAT_DIF_CRC_NO_INC 12
2031 #define FORMAT_DIF_CSUM_INC 13
2032 #define FORMAT_DIF_CSUM_NO_INC 14
2034 switch (domain
->sig
.dif
.type
) {
2035 case IB_T10DIF_NONE
:
2037 *selector
= FORMAT_DIF_NONE
;
2039 case IB_T10DIF_TYPE1
: /* Fall through */
2040 case IB_T10DIF_TYPE2
:
2041 switch (domain
->sig
.dif
.bg_type
) {
2043 *selector
= FORMAT_DIF_CRC_INC
;
2045 case IB_T10DIF_CSUM
:
2046 *selector
= FORMAT_DIF_CSUM_INC
;
2052 case IB_T10DIF_TYPE3
:
2053 switch (domain
->sig
.dif
.bg_type
) {
2055 *selector
= domain
->sig
.dif
.type3_inc_reftag
?
2056 FORMAT_DIF_CRC_INC
:
2057 FORMAT_DIF_CRC_NO_INC
;
2059 case IB_T10DIF_CSUM
:
2060 *selector
= domain
->sig
.dif
.type3_inc_reftag
?
2061 FORMAT_DIF_CSUM_INC
:
2062 FORMAT_DIF_CSUM_NO_INC
;
2075 static int mlx5_set_bsf(struct ib_mr
*sig_mr
,
2076 struct ib_sig_attrs
*sig_attrs
,
2077 struct mlx5_bsf
*bsf
, u32 data_size
)
2079 struct mlx5_core_sig_ctx
*msig
= to_mmr(sig_mr
)->sig
;
2080 struct mlx5_bsf_basic
*basic
= &bsf
->basic
;
2081 struct ib_sig_domain
*mem
= &sig_attrs
->mem
;
2082 struct ib_sig_domain
*wire
= &sig_attrs
->wire
;
2085 memset(bsf
, 0, sizeof(*bsf
));
2086 switch (sig_attrs
->mem
.sig_type
) {
2087 case IB_SIG_TYPE_T10_DIF
:
2088 if (sig_attrs
->wire
.sig_type
!= IB_SIG_TYPE_T10_DIF
)
2091 /* Input domain check byte mask */
2092 basic
->check_byte_mask
= sig_attrs
->check_mask
;
2093 if (mem
->sig
.dif
.pi_interval
== wire
->sig
.dif
.pi_interval
&&
2094 mem
->sig
.dif
.type
== wire
->sig
.dif
.type
) {
2095 /* Same block structure */
2096 basic
->bsf_size_sbs
= 1 << 4;
2097 if (mem
->sig
.dif
.bg_type
== wire
->sig
.dif
.bg_type
)
2098 basic
->wire
.copy_byte_mask
|= 0xc0;
2099 if (mem
->sig
.dif
.app_tag
== wire
->sig
.dif
.app_tag
)
2100 basic
->wire
.copy_byte_mask
|= 0x30;
2101 if (mem
->sig
.dif
.ref_tag
== wire
->sig
.dif
.ref_tag
)
2102 basic
->wire
.copy_byte_mask
|= 0x0f;
2104 basic
->wire
.bs_selector
= bs_selector(wire
->sig
.dif
.pi_interval
);
2106 basic
->mem
.bs_selector
= bs_selector(mem
->sig
.dif
.pi_interval
);
2107 basic
->raw_data_size
= cpu_to_be32(data_size
);
2109 ret
= format_selector(sig_attrs
, mem
, &selector
);
2112 basic
->m_bfs_psv
= cpu_to_be32(selector
<< 24 |
2113 msig
->psv_memory
.psv_idx
);
2115 ret
= format_selector(sig_attrs
, wire
, &selector
);
2118 basic
->w_bfs_psv
= cpu_to_be32(selector
<< 24 |
2119 msig
->psv_wire
.psv_idx
);
2129 static int set_sig_data_segment(struct ib_send_wr
*wr
, struct mlx5_ib_qp
*qp
,
2130 void **seg
, int *size
)
2132 struct ib_sig_attrs
*sig_attrs
= wr
->wr
.sig_handover
.sig_attrs
;
2133 struct ib_mr
*sig_mr
= wr
->wr
.sig_handover
.sig_mr
;
2134 struct mlx5_bsf
*bsf
;
2135 u32 data_len
= wr
->sg_list
->length
;
2136 u32 data_key
= wr
->sg_list
->lkey
;
2137 u64 data_va
= wr
->sg_list
->addr
;
2141 if (!wr
->wr
.sig_handover
.prot
||
2142 (data_key
== wr
->wr
.sig_handover
.prot
->lkey
&&
2143 data_va
== wr
->wr
.sig_handover
.prot
->addr
&&
2144 data_len
== wr
->wr
.sig_handover
.prot
->length
)) {
2146 * Source domain doesn't contain signature information
2147 * or data and protection are interleaved in memory.
2148 * So need construct:
2149 * ------------------
2151 * ------------------
2153 * ------------------
2155 struct mlx5_klm
*data_klm
= *seg
;
2157 data_klm
->bcount
= cpu_to_be32(data_len
);
2158 data_klm
->key
= cpu_to_be32(data_key
);
2159 data_klm
->va
= cpu_to_be64(data_va
);
2160 wqe_size
= ALIGN(sizeof(*data_klm
), 64);
2163 * Source domain contains signature information
2164 * So need construct a strided block format:
2165 * ---------------------------
2166 * | stride_block_ctrl |
2167 * ---------------------------
2169 * ---------------------------
2171 * ---------------------------
2173 * ---------------------------
2175 struct mlx5_stride_block_ctrl_seg
*sblock_ctrl
;
2176 struct mlx5_stride_block_entry
*data_sentry
;
2177 struct mlx5_stride_block_entry
*prot_sentry
;
2178 u32 prot_key
= wr
->wr
.sig_handover
.prot
->lkey
;
2179 u64 prot_va
= wr
->wr
.sig_handover
.prot
->addr
;
2180 u16 block_size
= sig_attrs
->mem
.sig
.dif
.pi_interval
;
2184 data_sentry
= (void *)sblock_ctrl
+ sizeof(*sblock_ctrl
);
2185 prot_sentry
= (void *)data_sentry
+ sizeof(*data_sentry
);
2187 prot_size
= prot_field_size(sig_attrs
->mem
.sig_type
);
2189 pr_err("Bad block size given: %u\n", block_size
);
2192 sblock_ctrl
->bcount_per_cycle
= cpu_to_be32(block_size
+
2194 sblock_ctrl
->op
= cpu_to_be32(MLX5_STRIDE_BLOCK_OP
);
2195 sblock_ctrl
->repeat_count
= cpu_to_be32(data_len
/ block_size
);
2196 sblock_ctrl
->num_entries
= cpu_to_be16(2);
2198 data_sentry
->bcount
= cpu_to_be16(block_size
);
2199 data_sentry
->key
= cpu_to_be32(data_key
);
2200 data_sentry
->va
= cpu_to_be64(data_va
);
2201 data_sentry
->stride
= cpu_to_be16(block_size
);
2203 prot_sentry
->bcount
= cpu_to_be16(prot_size
);
2204 prot_sentry
->key
= cpu_to_be32(prot_key
);
2205 prot_sentry
->va
= cpu_to_be64(prot_va
);
2206 prot_sentry
->stride
= cpu_to_be16(prot_size
);
2208 wqe_size
= ALIGN(sizeof(*sblock_ctrl
) + sizeof(*data_sentry
) +
2209 sizeof(*prot_sentry
), 64);
2213 *size
+= wqe_size
/ 16;
2214 if (unlikely((*seg
== qp
->sq
.qend
)))
2215 *seg
= mlx5_get_send_wqe(qp
, 0);
2218 ret
= mlx5_set_bsf(sig_mr
, sig_attrs
, bsf
, data_len
);
2222 *seg
+= sizeof(*bsf
);
2223 *size
+= sizeof(*bsf
) / 16;
2224 if (unlikely((*seg
== qp
->sq
.qend
)))
2225 *seg
= mlx5_get_send_wqe(qp
, 0);
2230 static void set_sig_mkey_segment(struct mlx5_mkey_seg
*seg
,
2231 struct ib_send_wr
*wr
, u32 nelements
,
2232 u32 length
, u32 pdn
)
2234 struct ib_mr
*sig_mr
= wr
->wr
.sig_handover
.sig_mr
;
2235 u32 sig_key
= sig_mr
->rkey
;
2236 u8 sigerr
= to_mmr(sig_mr
)->sig
->sigerr_count
& 1;
2238 memset(seg
, 0, sizeof(*seg
));
2240 seg
->flags
= get_umr_flags(wr
->wr
.sig_handover
.access_flags
) |
2241 MLX5_ACCESS_MODE_KLM
;
2242 seg
->qpn_mkey7_0
= cpu_to_be32((sig_key
& 0xff) | 0xffffff00);
2243 seg
->flags_pd
= cpu_to_be32(MLX5_MKEY_REMOTE_INVAL
| sigerr
<< 26 |
2244 MLX5_MKEY_BSF_EN
| pdn
);
2245 seg
->len
= cpu_to_be64(length
);
2246 seg
->xlt_oct_size
= cpu_to_be32(be16_to_cpu(get_klm_octo(nelements
)));
2247 seg
->bsfs_octo_size
= cpu_to_be32(MLX5_MKEY_BSF_OCTO_SIZE
);
2250 static void set_sig_umr_segment(struct mlx5_wqe_umr_ctrl_seg
*umr
,
2251 struct ib_send_wr
*wr
, u32 nelements
)
2253 memset(umr
, 0, sizeof(*umr
));
2255 umr
->flags
= MLX5_FLAGS_INLINE
| MLX5_FLAGS_CHECK_FREE
;
2256 umr
->klm_octowords
= get_klm_octo(nelements
);
2257 umr
->bsf_octowords
= cpu_to_be16(MLX5_MKEY_BSF_OCTO_SIZE
);
2258 umr
->mkey_mask
= sig_mkey_mask();
2262 static int set_sig_umr_wr(struct ib_send_wr
*wr
, struct mlx5_ib_qp
*qp
,
2263 void **seg
, int *size
)
2265 struct mlx5_ib_mr
*sig_mr
= to_mmr(wr
->wr
.sig_handover
.sig_mr
);
2266 u32 pdn
= get_pd(qp
)->pdn
;
2268 int region_len
, ret
;
2270 if (unlikely(wr
->num_sge
!= 1) ||
2271 unlikely(wr
->wr
.sig_handover
.access_flags
&
2272 IB_ACCESS_REMOTE_ATOMIC
) ||
2273 unlikely(!sig_mr
->sig
) || unlikely(!qp
->signature_en
) ||
2274 unlikely(!sig_mr
->sig
->sig_status_checked
))
2277 /* length of the protected region, data + protection */
2278 region_len
= wr
->sg_list
->length
;
2279 if (wr
->wr
.sig_handover
.prot
&&
2280 (wr
->wr
.sig_handover
.prot
->lkey
!= wr
->sg_list
->lkey
||
2281 wr
->wr
.sig_handover
.prot
->addr
!= wr
->sg_list
->addr
||
2282 wr
->wr
.sig_handover
.prot
->length
!= wr
->sg_list
->length
))
2283 region_len
+= wr
->wr
.sig_handover
.prot
->length
;
2286 * KLM octoword size - if protection was provided
2287 * then we use strided block format (3 octowords),
2288 * else we use single KLM (1 octoword)
2290 klm_oct_size
= wr
->wr
.sig_handover
.prot
? 3 : 1;
2292 set_sig_umr_segment(*seg
, wr
, klm_oct_size
);
2293 *seg
+= sizeof(struct mlx5_wqe_umr_ctrl_seg
);
2294 *size
+= sizeof(struct mlx5_wqe_umr_ctrl_seg
) / 16;
2295 if (unlikely((*seg
== qp
->sq
.qend
)))
2296 *seg
= mlx5_get_send_wqe(qp
, 0);
2298 set_sig_mkey_segment(*seg
, wr
, klm_oct_size
, region_len
, pdn
);
2299 *seg
+= sizeof(struct mlx5_mkey_seg
);
2300 *size
+= sizeof(struct mlx5_mkey_seg
) / 16;
2301 if (unlikely((*seg
== qp
->sq
.qend
)))
2302 *seg
= mlx5_get_send_wqe(qp
, 0);
2304 ret
= set_sig_data_segment(wr
, qp
, seg
, size
);
2308 sig_mr
->sig
->sig_status_checked
= false;
2312 static int set_psv_wr(struct ib_sig_domain
*domain
,
2313 u32 psv_idx
, void **seg
, int *size
)
2315 struct mlx5_seg_set_psv
*psv_seg
= *seg
;
2317 memset(psv_seg
, 0, sizeof(*psv_seg
));
2318 psv_seg
->psv_num
= cpu_to_be32(psv_idx
);
2319 switch (domain
->sig_type
) {
2320 case IB_SIG_TYPE_T10_DIF
:
2321 psv_seg
->transient_sig
= cpu_to_be32(domain
->sig
.dif
.bg
<< 16 |
2322 domain
->sig
.dif
.app_tag
);
2323 psv_seg
->ref_tag
= cpu_to_be32(domain
->sig
.dif
.ref_tag
);
2325 *seg
+= sizeof(*psv_seg
);
2326 *size
+= sizeof(*psv_seg
) / 16;
2330 pr_err("Bad signature type given.\n");
2337 static int set_frwr_li_wr(void **seg
, struct ib_send_wr
*wr
, int *size
,
2338 struct mlx5_core_dev
*mdev
, struct mlx5_ib_pd
*pd
, struct mlx5_ib_qp
*qp
)
2343 li
= wr
->opcode
== IB_WR_LOCAL_INV
? 1 : 0;
2344 if (unlikely(wr
->send_flags
& IB_SEND_INLINE
))
2347 set_frwr_umr_segment(*seg
, wr
, li
);
2348 *seg
+= sizeof(struct mlx5_wqe_umr_ctrl_seg
);
2349 *size
+= sizeof(struct mlx5_wqe_umr_ctrl_seg
) / 16;
2350 if (unlikely((*seg
== qp
->sq
.qend
)))
2351 *seg
= mlx5_get_send_wqe(qp
, 0);
2352 set_mkey_segment(*seg
, wr
, li
, &writ
);
2353 *seg
+= sizeof(struct mlx5_mkey_seg
);
2354 *size
+= sizeof(struct mlx5_mkey_seg
) / 16;
2355 if (unlikely((*seg
== qp
->sq
.qend
)))
2356 *seg
= mlx5_get_send_wqe(qp
, 0);
2358 if (unlikely(wr
->wr
.fast_reg
.page_list_len
>
2359 wr
->wr
.fast_reg
.page_list
->max_page_list_len
))
2362 set_frwr_pages(*seg
, wr
, mdev
, pd
, writ
);
2363 *seg
+= sizeof(struct mlx5_wqe_data_seg
);
2364 *size
+= (sizeof(struct mlx5_wqe_data_seg
) / 16);
2369 static void dump_wqe(struct mlx5_ib_qp
*qp
, int idx
, int size_16
)
2375 pr_debug("dump wqe at %p\n", mlx5_get_send_wqe(qp
, tidx
));
2376 for (i
= 0, j
= 0; i
< size_16
* 4; i
+= 4, j
+= 4) {
2377 if ((i
& 0xf) == 0) {
2378 void *buf
= mlx5_get_send_wqe(qp
, tidx
);
2379 tidx
= (tidx
+ 1) & (qp
->sq
.wqe_cnt
- 1);
2383 pr_debug("%08x %08x %08x %08x\n", be32_to_cpu(p
[j
]),
2384 be32_to_cpu(p
[j
+ 1]), be32_to_cpu(p
[j
+ 2]),
2385 be32_to_cpu(p
[j
+ 3]));
2389 static void mlx5_bf_copy(u64 __iomem
*dst
, u64
*src
,
2390 unsigned bytecnt
, struct mlx5_ib_qp
*qp
)
2392 while (bytecnt
> 0) {
2393 __iowrite64_copy(dst
++, src
++, 8);
2394 __iowrite64_copy(dst
++, src
++, 8);
2395 __iowrite64_copy(dst
++, src
++, 8);
2396 __iowrite64_copy(dst
++, src
++, 8);
2397 __iowrite64_copy(dst
++, src
++, 8);
2398 __iowrite64_copy(dst
++, src
++, 8);
2399 __iowrite64_copy(dst
++, src
++, 8);
2400 __iowrite64_copy(dst
++, src
++, 8);
2402 if (unlikely(src
== qp
->sq
.qend
))
2403 src
= mlx5_get_send_wqe(qp
, 0);
2407 static u8
get_fence(u8 fence
, struct ib_send_wr
*wr
)
2409 if (unlikely(wr
->opcode
== IB_WR_LOCAL_INV
&&
2410 wr
->send_flags
& IB_SEND_FENCE
))
2411 return MLX5_FENCE_MODE_STRONG_ORDERING
;
2413 if (unlikely(fence
)) {
2414 if (wr
->send_flags
& IB_SEND_FENCE
)
2415 return MLX5_FENCE_MODE_SMALL_AND_FENCE
;
2424 static int begin_wqe(struct mlx5_ib_qp
*qp
, void **seg
,
2425 struct mlx5_wqe_ctrl_seg
**ctrl
,
2426 struct ib_send_wr
*wr
, int *idx
,
2427 int *size
, int nreq
)
2431 if (unlikely(mlx5_wq_overflow(&qp
->sq
, nreq
, qp
->ibqp
.send_cq
))) {
2436 *idx
= qp
->sq
.cur_post
& (qp
->sq
.wqe_cnt
- 1);
2437 *seg
= mlx5_get_send_wqe(qp
, *idx
);
2439 *(uint32_t *)(*seg
+ 8) = 0;
2440 (*ctrl
)->imm
= send_ieth(wr
);
2441 (*ctrl
)->fm_ce_se
= qp
->sq_signal_bits
|
2442 (wr
->send_flags
& IB_SEND_SIGNALED
?
2443 MLX5_WQE_CTRL_CQ_UPDATE
: 0) |
2444 (wr
->send_flags
& IB_SEND_SOLICITED
?
2445 MLX5_WQE_CTRL_SOLICITED
: 0);
2447 *seg
+= sizeof(**ctrl
);
2448 *size
= sizeof(**ctrl
) / 16;
2453 static void finish_wqe(struct mlx5_ib_qp
*qp
,
2454 struct mlx5_wqe_ctrl_seg
*ctrl
,
2455 u8 size
, unsigned idx
, u64 wr_id
,
2456 int nreq
, u8 fence
, u8 next_fence
,
2461 ctrl
->opmod_idx_opcode
= cpu_to_be32(((u32
)(qp
->sq
.cur_post
) << 8) |
2462 mlx5_opcode
| ((u32
)opmod
<< 24));
2463 ctrl
->qpn_ds
= cpu_to_be32(size
| (qp
->mqp
.qpn
<< 8));
2464 ctrl
->fm_ce_se
|= fence
;
2465 qp
->fm_cache
= next_fence
;
2466 if (unlikely(qp
->wq_sig
))
2467 ctrl
->signature
= wq_sig(ctrl
);
2469 qp
->sq
.wrid
[idx
] = wr_id
;
2470 qp
->sq
.w_list
[idx
].opcode
= mlx5_opcode
;
2471 qp
->sq
.wqe_head
[idx
] = qp
->sq
.head
+ nreq
;
2472 qp
->sq
.cur_post
+= DIV_ROUND_UP(size
* 16, MLX5_SEND_WQE_BB
);
2473 qp
->sq
.w_list
[idx
].next
= qp
->sq
.cur_post
;
2477 int mlx5_ib_post_send(struct ib_qp
*ibqp
, struct ib_send_wr
*wr
,
2478 struct ib_send_wr
**bad_wr
)
2480 struct mlx5_wqe_ctrl_seg
*ctrl
= NULL
; /* compiler warning */
2481 struct mlx5_ib_dev
*dev
= to_mdev(ibqp
->device
);
2482 struct mlx5_core_dev
*mdev
= dev
->mdev
;
2483 struct mlx5_ib_qp
*qp
= to_mqp(ibqp
);
2484 struct mlx5_ib_mr
*mr
;
2485 struct mlx5_wqe_data_seg
*dpseg
;
2486 struct mlx5_wqe_xrc_seg
*xrc
;
2487 struct mlx5_bf
*bf
= qp
->bf
;
2488 int uninitialized_var(size
);
2489 void *qend
= qp
->sq
.qend
;
2490 unsigned long flags
;
2501 spin_lock_irqsave(&qp
->sq
.lock
, flags
);
2503 for (nreq
= 0; wr
; nreq
++, wr
= wr
->next
) {
2504 if (unlikely(wr
->opcode
>= sizeof(mlx5_ib_opcode
) / sizeof(mlx5_ib_opcode
[0]))) {
2505 mlx5_ib_warn(dev
, "\n");
2511 fence
= qp
->fm_cache
;
2512 num_sge
= wr
->num_sge
;
2513 if (unlikely(num_sge
> qp
->sq
.max_gs
)) {
2514 mlx5_ib_warn(dev
, "\n");
2520 err
= begin_wqe(qp
, &seg
, &ctrl
, wr
, &idx
, &size
, nreq
);
2522 mlx5_ib_warn(dev
, "\n");
2528 switch (ibqp
->qp_type
) {
2529 case IB_QPT_XRC_INI
:
2531 xrc
->xrc_srqn
= htonl(wr
->xrc_remote_srq_num
);
2532 seg
+= sizeof(*xrc
);
2533 size
+= sizeof(*xrc
) / 16;
2536 switch (wr
->opcode
) {
2537 case IB_WR_RDMA_READ
:
2538 case IB_WR_RDMA_WRITE
:
2539 case IB_WR_RDMA_WRITE_WITH_IMM
:
2540 set_raddr_seg(seg
, wr
->wr
.rdma
.remote_addr
,
2542 seg
+= sizeof(struct mlx5_wqe_raddr_seg
);
2543 size
+= sizeof(struct mlx5_wqe_raddr_seg
) / 16;
2546 case IB_WR_ATOMIC_CMP_AND_SWP
:
2547 case IB_WR_ATOMIC_FETCH_AND_ADD
:
2548 case IB_WR_MASKED_ATOMIC_CMP_AND_SWP
:
2549 mlx5_ib_warn(dev
, "Atomic operations are not supported yet\n");
2554 case IB_WR_LOCAL_INV
:
2555 next_fence
= MLX5_FENCE_MODE_INITIATOR_SMALL
;
2556 qp
->sq
.wr_data
[idx
] = IB_WR_LOCAL_INV
;
2557 ctrl
->imm
= cpu_to_be32(wr
->ex
.invalidate_rkey
);
2558 err
= set_frwr_li_wr(&seg
, wr
, &size
, mdev
, to_mpd(ibqp
->pd
), qp
);
2560 mlx5_ib_warn(dev
, "\n");
2567 case IB_WR_FAST_REG_MR
:
2568 next_fence
= MLX5_FENCE_MODE_INITIATOR_SMALL
;
2569 qp
->sq
.wr_data
[idx
] = IB_WR_FAST_REG_MR
;
2570 ctrl
->imm
= cpu_to_be32(wr
->wr
.fast_reg
.rkey
);
2571 err
= set_frwr_li_wr(&seg
, wr
, &size
, mdev
, to_mpd(ibqp
->pd
), qp
);
2573 mlx5_ib_warn(dev
, "\n");
2580 case IB_WR_REG_SIG_MR
:
2581 qp
->sq
.wr_data
[idx
] = IB_WR_REG_SIG_MR
;
2582 mr
= to_mmr(wr
->wr
.sig_handover
.sig_mr
);
2584 ctrl
->imm
= cpu_to_be32(mr
->ibmr
.rkey
);
2585 err
= set_sig_umr_wr(wr
, qp
, &seg
, &size
);
2587 mlx5_ib_warn(dev
, "\n");
2592 finish_wqe(qp
, ctrl
, size
, idx
, wr
->wr_id
,
2593 nreq
, get_fence(fence
, wr
),
2594 next_fence
, MLX5_OPCODE_UMR
);
2596 * SET_PSV WQEs are not signaled and solicited
2599 wr
->send_flags
&= ~IB_SEND_SIGNALED
;
2600 wr
->send_flags
|= IB_SEND_SOLICITED
;
2601 err
= begin_wqe(qp
, &seg
, &ctrl
, wr
,
2604 mlx5_ib_warn(dev
, "\n");
2610 err
= set_psv_wr(&wr
->wr
.sig_handover
.sig_attrs
->mem
,
2611 mr
->sig
->psv_memory
.psv_idx
, &seg
,
2614 mlx5_ib_warn(dev
, "\n");
2619 finish_wqe(qp
, ctrl
, size
, idx
, wr
->wr_id
,
2620 nreq
, get_fence(fence
, wr
),
2621 next_fence
, MLX5_OPCODE_SET_PSV
);
2622 err
= begin_wqe(qp
, &seg
, &ctrl
, wr
,
2625 mlx5_ib_warn(dev
, "\n");
2631 next_fence
= MLX5_FENCE_MODE_INITIATOR_SMALL
;
2632 err
= set_psv_wr(&wr
->wr
.sig_handover
.sig_attrs
->wire
,
2633 mr
->sig
->psv_wire
.psv_idx
, &seg
,
2636 mlx5_ib_warn(dev
, "\n");
2641 finish_wqe(qp
, ctrl
, size
, idx
, wr
->wr_id
,
2642 nreq
, get_fence(fence
, wr
),
2643 next_fence
, MLX5_OPCODE_SET_PSV
);
2653 switch (wr
->opcode
) {
2654 case IB_WR_RDMA_WRITE
:
2655 case IB_WR_RDMA_WRITE_WITH_IMM
:
2656 set_raddr_seg(seg
, wr
->wr
.rdma
.remote_addr
,
2658 seg
+= sizeof(struct mlx5_wqe_raddr_seg
);
2659 size
+= sizeof(struct mlx5_wqe_raddr_seg
) / 16;
2670 set_datagram_seg(seg
, wr
);
2671 seg
+= sizeof(struct mlx5_wqe_datagram_seg
);
2672 size
+= sizeof(struct mlx5_wqe_datagram_seg
) / 16;
2673 if (unlikely((seg
== qend
)))
2674 seg
= mlx5_get_send_wqe(qp
, 0);
2677 case MLX5_IB_QPT_REG_UMR
:
2678 if (wr
->opcode
!= MLX5_IB_WR_UMR
) {
2680 mlx5_ib_warn(dev
, "bad opcode\n");
2683 qp
->sq
.wr_data
[idx
] = MLX5_IB_WR_UMR
;
2684 ctrl
->imm
= cpu_to_be32(wr
->wr
.fast_reg
.rkey
);
2685 set_reg_umr_segment(seg
, wr
);
2686 seg
+= sizeof(struct mlx5_wqe_umr_ctrl_seg
);
2687 size
+= sizeof(struct mlx5_wqe_umr_ctrl_seg
) / 16;
2688 if (unlikely((seg
== qend
)))
2689 seg
= mlx5_get_send_wqe(qp
, 0);
2690 set_reg_mkey_segment(seg
, wr
);
2691 seg
+= sizeof(struct mlx5_mkey_seg
);
2692 size
+= sizeof(struct mlx5_mkey_seg
) / 16;
2693 if (unlikely((seg
== qend
)))
2694 seg
= mlx5_get_send_wqe(qp
, 0);
2701 if (wr
->send_flags
& IB_SEND_INLINE
&& num_sge
) {
2702 int uninitialized_var(sz
);
2704 err
= set_data_inl_seg(qp
, wr
, seg
, &sz
);
2705 if (unlikely(err
)) {
2706 mlx5_ib_warn(dev
, "\n");
2714 for (i
= 0; i
< num_sge
; i
++) {
2715 if (unlikely(dpseg
== qend
)) {
2716 seg
= mlx5_get_send_wqe(qp
, 0);
2719 if (likely(wr
->sg_list
[i
].length
)) {
2720 set_data_ptr_seg(dpseg
, wr
->sg_list
+ i
);
2721 size
+= sizeof(struct mlx5_wqe_data_seg
) / 16;
2727 finish_wqe(qp
, ctrl
, size
, idx
, wr
->wr_id
, nreq
,
2728 get_fence(fence
, wr
), next_fence
,
2729 mlx5_ib_opcode
[wr
->opcode
]);
2732 dump_wqe(qp
, idx
, size
);
2737 qp
->sq
.head
+= nreq
;
2739 /* Make sure that descriptors are written before
2740 * updating doorbell record and ringing the doorbell
2744 qp
->db
.db
[MLX5_SND_DBR
] = cpu_to_be32(qp
->sq
.cur_post
);
2746 /* Make sure doorbell record is visible to the HCA before
2747 * we hit doorbell */
2751 spin_lock(&bf
->lock
);
2754 if (0 && nreq
== 1 && bf
->uuarn
&& inl
&& size
> 1 && size
<= bf
->buf_size
/ 16) {
2755 mlx5_bf_copy(bf
->reg
+ bf
->offset
, (u64
*)ctrl
, ALIGN(size
* 16, 64), qp
);
2758 mlx5_write64((__be32
*)ctrl
, bf
->regreg
+ bf
->offset
,
2759 MLX5_GET_DOORBELL_LOCK(&bf
->lock32
));
2760 /* Make sure doorbells don't leak out of SQ spinlock
2761 * and reach the HCA out of order.
2765 bf
->offset
^= bf
->buf_size
;
2767 spin_unlock(&bf
->lock
);
2770 spin_unlock_irqrestore(&qp
->sq
.lock
, flags
);
2775 static void set_sig_seg(struct mlx5_rwqe_sig
*sig
, int size
)
2777 sig
->signature
= calc_sig(sig
, size
);
2780 int mlx5_ib_post_recv(struct ib_qp
*ibqp
, struct ib_recv_wr
*wr
,
2781 struct ib_recv_wr
**bad_wr
)
2783 struct mlx5_ib_qp
*qp
= to_mqp(ibqp
);
2784 struct mlx5_wqe_data_seg
*scat
;
2785 struct mlx5_rwqe_sig
*sig
;
2786 unsigned long flags
;
2792 spin_lock_irqsave(&qp
->rq
.lock
, flags
);
2794 ind
= qp
->rq
.head
& (qp
->rq
.wqe_cnt
- 1);
2796 for (nreq
= 0; wr
; nreq
++, wr
= wr
->next
) {
2797 if (mlx5_wq_overflow(&qp
->rq
, nreq
, qp
->ibqp
.recv_cq
)) {
2803 if (unlikely(wr
->num_sge
> qp
->rq
.max_gs
)) {
2809 scat
= get_recv_wqe(qp
, ind
);
2813 for (i
= 0; i
< wr
->num_sge
; i
++)
2814 set_data_ptr_seg(scat
+ i
, wr
->sg_list
+ i
);
2816 if (i
< qp
->rq
.max_gs
) {
2817 scat
[i
].byte_count
= 0;
2818 scat
[i
].lkey
= cpu_to_be32(MLX5_INVALID_LKEY
);
2823 sig
= (struct mlx5_rwqe_sig
*)scat
;
2824 set_sig_seg(sig
, (qp
->rq
.max_gs
+ 1) << 2);
2827 qp
->rq
.wrid
[ind
] = wr
->wr_id
;
2829 ind
= (ind
+ 1) & (qp
->rq
.wqe_cnt
- 1);
2834 qp
->rq
.head
+= nreq
;
2836 /* Make sure that descriptors are written before
2841 *qp
->db
.db
= cpu_to_be32(qp
->rq
.head
& 0xffff);
2844 spin_unlock_irqrestore(&qp
->rq
.lock
, flags
);
2849 static inline enum ib_qp_state
to_ib_qp_state(enum mlx5_qp_state mlx5_state
)
2851 switch (mlx5_state
) {
2852 case MLX5_QP_STATE_RST
: return IB_QPS_RESET
;
2853 case MLX5_QP_STATE_INIT
: return IB_QPS_INIT
;
2854 case MLX5_QP_STATE_RTR
: return IB_QPS_RTR
;
2855 case MLX5_QP_STATE_RTS
: return IB_QPS_RTS
;
2856 case MLX5_QP_STATE_SQ_DRAINING
:
2857 case MLX5_QP_STATE_SQD
: return IB_QPS_SQD
;
2858 case MLX5_QP_STATE_SQER
: return IB_QPS_SQE
;
2859 case MLX5_QP_STATE_ERR
: return IB_QPS_ERR
;
2864 static inline enum ib_mig_state
to_ib_mig_state(int mlx5_mig_state
)
2866 switch (mlx5_mig_state
) {
2867 case MLX5_QP_PM_ARMED
: return IB_MIG_ARMED
;
2868 case MLX5_QP_PM_REARM
: return IB_MIG_REARM
;
2869 case MLX5_QP_PM_MIGRATED
: return IB_MIG_MIGRATED
;
2874 static int to_ib_qp_access_flags(int mlx5_flags
)
2878 if (mlx5_flags
& MLX5_QP_BIT_RRE
)
2879 ib_flags
|= IB_ACCESS_REMOTE_READ
;
2880 if (mlx5_flags
& MLX5_QP_BIT_RWE
)
2881 ib_flags
|= IB_ACCESS_REMOTE_WRITE
;
2882 if (mlx5_flags
& MLX5_QP_BIT_RAE
)
2883 ib_flags
|= IB_ACCESS_REMOTE_ATOMIC
;
2888 static void to_ib_ah_attr(struct mlx5_ib_dev
*ibdev
, struct ib_ah_attr
*ib_ah_attr
,
2889 struct mlx5_qp_path
*path
)
2891 struct mlx5_core_dev
*dev
= ibdev
->mdev
;
2893 memset(ib_ah_attr
, 0, sizeof(*ib_ah_attr
));
2894 ib_ah_attr
->port_num
= path
->port
;
2896 if (ib_ah_attr
->port_num
== 0 || ib_ah_attr
->port_num
> dev
->caps
.num_ports
)
2899 ib_ah_attr
->sl
= path
->sl
& 0xf;
2901 ib_ah_attr
->dlid
= be16_to_cpu(path
->rlid
);
2902 ib_ah_attr
->src_path_bits
= path
->grh_mlid
& 0x7f;
2903 ib_ah_attr
->static_rate
= path
->static_rate
? path
->static_rate
- 5 : 0;
2904 ib_ah_attr
->ah_flags
= (path
->grh_mlid
& (1 << 7)) ? IB_AH_GRH
: 0;
2905 if (ib_ah_attr
->ah_flags
) {
2906 ib_ah_attr
->grh
.sgid_index
= path
->mgid_index
;
2907 ib_ah_attr
->grh
.hop_limit
= path
->hop_limit
;
2908 ib_ah_attr
->grh
.traffic_class
=
2909 (be32_to_cpu(path
->tclass_flowlabel
) >> 20) & 0xff;
2910 ib_ah_attr
->grh
.flow_label
=
2911 be32_to_cpu(path
->tclass_flowlabel
) & 0xfffff;
2912 memcpy(ib_ah_attr
->grh
.dgid
.raw
,
2913 path
->rgid
, sizeof(ib_ah_attr
->grh
.dgid
.raw
));
2917 int mlx5_ib_query_qp(struct ib_qp
*ibqp
, struct ib_qp_attr
*qp_attr
, int qp_attr_mask
,
2918 struct ib_qp_init_attr
*qp_init_attr
)
2920 struct mlx5_ib_dev
*dev
= to_mdev(ibqp
->device
);
2921 struct mlx5_ib_qp
*qp
= to_mqp(ibqp
);
2922 struct mlx5_query_qp_mbox_out
*outb
;
2923 struct mlx5_qp_context
*context
;
2927 mutex_lock(&qp
->mutex
);
2928 outb
= kzalloc(sizeof(*outb
), GFP_KERNEL
);
2933 context
= &outb
->ctx
;
2934 err
= mlx5_core_qp_query(dev
->mdev
, &qp
->mqp
, outb
, sizeof(*outb
));
2938 mlx5_state
= be32_to_cpu(context
->flags
) >> 28;
2940 qp
->state
= to_ib_qp_state(mlx5_state
);
2941 qp_attr
->qp_state
= qp
->state
;
2942 qp_attr
->path_mtu
= context
->mtu_msgmax
>> 5;
2943 qp_attr
->path_mig_state
=
2944 to_ib_mig_state((be32_to_cpu(context
->flags
) >> 11) & 0x3);
2945 qp_attr
->qkey
= be32_to_cpu(context
->qkey
);
2946 qp_attr
->rq_psn
= be32_to_cpu(context
->rnr_nextrecvpsn
) & 0xffffff;
2947 qp_attr
->sq_psn
= be32_to_cpu(context
->next_send_psn
) & 0xffffff;
2948 qp_attr
->dest_qp_num
= be32_to_cpu(context
->log_pg_sz_remote_qpn
) & 0xffffff;
2949 qp_attr
->qp_access_flags
=
2950 to_ib_qp_access_flags(be32_to_cpu(context
->params2
));
2952 if (qp
->ibqp
.qp_type
== IB_QPT_RC
|| qp
->ibqp
.qp_type
== IB_QPT_UC
) {
2953 to_ib_ah_attr(dev
, &qp_attr
->ah_attr
, &context
->pri_path
);
2954 to_ib_ah_attr(dev
, &qp_attr
->alt_ah_attr
, &context
->alt_path
);
2955 qp_attr
->alt_pkey_index
= context
->alt_path
.pkey_index
& 0x7f;
2956 qp_attr
->alt_port_num
= qp_attr
->alt_ah_attr
.port_num
;
2959 qp_attr
->pkey_index
= context
->pri_path
.pkey_index
& 0x7f;
2960 qp_attr
->port_num
= context
->pri_path
.port
;
2962 /* qp_attr->en_sqd_async_notify is only applicable in modify qp */
2963 qp_attr
->sq_draining
= mlx5_state
== MLX5_QP_STATE_SQ_DRAINING
;
2965 qp_attr
->max_rd_atomic
= 1 << ((be32_to_cpu(context
->params1
) >> 21) & 0x7);
2967 qp_attr
->max_dest_rd_atomic
=
2968 1 << ((be32_to_cpu(context
->params2
) >> 21) & 0x7);
2969 qp_attr
->min_rnr_timer
=
2970 (be32_to_cpu(context
->rnr_nextrecvpsn
) >> 24) & 0x1f;
2971 qp_attr
->timeout
= context
->pri_path
.ackto_lt
>> 3;
2972 qp_attr
->retry_cnt
= (be32_to_cpu(context
->params1
) >> 16) & 0x7;
2973 qp_attr
->rnr_retry
= (be32_to_cpu(context
->params1
) >> 13) & 0x7;
2974 qp_attr
->alt_timeout
= context
->alt_path
.ackto_lt
>> 3;
2975 qp_attr
->cur_qp_state
= qp_attr
->qp_state
;
2976 qp_attr
->cap
.max_recv_wr
= qp
->rq
.wqe_cnt
;
2977 qp_attr
->cap
.max_recv_sge
= qp
->rq
.max_gs
;
2979 if (!ibqp
->uobject
) {
2980 qp_attr
->cap
.max_send_wr
= qp
->sq
.wqe_cnt
;
2981 qp_attr
->cap
.max_send_sge
= qp
->sq
.max_gs
;
2983 qp_attr
->cap
.max_send_wr
= 0;
2984 qp_attr
->cap
.max_send_sge
= 0;
2987 /* We don't support inline sends for kernel QPs (yet), and we
2988 * don't know what userspace's value should be.
2990 qp_attr
->cap
.max_inline_data
= 0;
2992 qp_init_attr
->cap
= qp_attr
->cap
;
2994 qp_init_attr
->create_flags
= 0;
2995 if (qp
->flags
& MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK
)
2996 qp_init_attr
->create_flags
|= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK
;
2998 qp_init_attr
->sq_sig_type
= qp
->sq_signal_bits
& MLX5_WQE_CTRL_CQ_UPDATE
?
2999 IB_SIGNAL_ALL_WR
: IB_SIGNAL_REQ_WR
;
3005 mutex_unlock(&qp
->mutex
);
3009 struct ib_xrcd
*mlx5_ib_alloc_xrcd(struct ib_device
*ibdev
,
3010 struct ib_ucontext
*context
,
3011 struct ib_udata
*udata
)
3013 struct mlx5_ib_dev
*dev
= to_mdev(ibdev
);
3014 struct mlx5_ib_xrcd
*xrcd
;
3017 if (!(dev
->mdev
->caps
.flags
& MLX5_DEV_CAP_FLAG_XRC
))
3018 return ERR_PTR(-ENOSYS
);
3020 xrcd
= kmalloc(sizeof(*xrcd
), GFP_KERNEL
);
3022 return ERR_PTR(-ENOMEM
);
3024 err
= mlx5_core_xrcd_alloc(dev
->mdev
, &xrcd
->xrcdn
);
3027 return ERR_PTR(-ENOMEM
);
3030 return &xrcd
->ibxrcd
;
3033 int mlx5_ib_dealloc_xrcd(struct ib_xrcd
*xrcd
)
3035 struct mlx5_ib_dev
*dev
= to_mdev(xrcd
->device
);
3036 u32 xrcdn
= to_mxrcd(xrcd
)->xrcdn
;
3039 err
= mlx5_core_xrcd_dealloc(dev
->mdev
, xrcdn
);
3041 mlx5_ib_warn(dev
, "failed to dealloc xrcdn 0x%x\n", xrcdn
);