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e126ba97 EC |
1 | /* |
2 | * Copyright (c) 2013, Mellanox Technologies inc. All rights reserved. | |
3 | * | |
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: | |
9 | * | |
10 | * Redistribution and use in source and binary forms, with or | |
11 | * without modification, are permitted provided that the following | |
12 | * conditions are met: | |
13 | * | |
14 | * - Redistributions of source code must retain the above | |
15 | * copyright notice, this list of conditions and the following | |
16 | * disclaimer. | |
17 | * | |
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. | |
22 | * | |
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 | |
30 | * SOFTWARE. | |
31 | */ | |
32 | ||
33 | #include <linux/module.h> | |
34 | #include <rdma/ib_umem.h> | |
35 | #include "mlx5_ib.h" | |
36 | #include "user.h" | |
37 | ||
38 | /* not supported currently */ | |
39 | static int wq_signature; | |
40 | ||
41 | enum { | |
42 | MLX5_IB_ACK_REQ_FREQ = 8, | |
43 | }; | |
44 | ||
45 | enum { | |
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 | |
50 | }; | |
51 | ||
52 | enum { | |
53 | MLX5_IB_SQ_STRIDE = 6, | |
54 | MLX5_IB_CACHE_LINE_SIZE = 64, | |
55 | }; | |
56 | ||
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, | |
71 | }; | |
72 | ||
73 | struct umr_wr { | |
74 | u64 virt_addr; | |
75 | struct ib_pd *pd; | |
76 | unsigned int page_shift; | |
77 | unsigned int npages; | |
78 | u32 length; | |
79 | int access_flags; | |
80 | u32 mkey; | |
81 | }; | |
82 | ||
83 | static int is_qp0(enum ib_qp_type qp_type) | |
84 | { | |
85 | return qp_type == IB_QPT_SMI; | |
86 | } | |
87 | ||
88 | static int is_qp1(enum ib_qp_type qp_type) | |
89 | { | |
90 | return qp_type == IB_QPT_GSI; | |
91 | } | |
92 | ||
93 | static int is_sqp(enum ib_qp_type qp_type) | |
94 | { | |
95 | return is_qp0(qp_type) || is_qp1(qp_type); | |
96 | } | |
97 | ||
98 | static void *get_wqe(struct mlx5_ib_qp *qp, int offset) | |
99 | { | |
100 | return mlx5_buf_offset(&qp->buf, offset); | |
101 | } | |
102 | ||
103 | static void *get_recv_wqe(struct mlx5_ib_qp *qp, int n) | |
104 | { | |
105 | return get_wqe(qp, qp->rq.offset + (n << qp->rq.wqe_shift)); | |
106 | } | |
107 | ||
108 | void *mlx5_get_send_wqe(struct mlx5_ib_qp *qp, int n) | |
109 | { | |
110 | return get_wqe(qp, qp->sq.offset + (n << MLX5_IB_SQ_STRIDE)); | |
111 | } | |
112 | ||
113 | static void mlx5_ib_qp_event(struct mlx5_core_qp *qp, int type) | |
114 | { | |
115 | struct ib_qp *ibqp = &to_mibqp(qp)->ibqp; | |
116 | struct ib_event event; | |
117 | ||
118 | if (type == MLX5_EVENT_TYPE_PATH_MIG) | |
119 | to_mibqp(qp)->port = to_mibqp(qp)->alt_port; | |
120 | ||
121 | if (ibqp->event_handler) { | |
122 | event.device = ibqp->device; | |
123 | event.element.qp = ibqp; | |
124 | switch (type) { | |
125 | case MLX5_EVENT_TYPE_PATH_MIG: | |
126 | event.event = IB_EVENT_PATH_MIG; | |
127 | break; | |
128 | case MLX5_EVENT_TYPE_COMM_EST: | |
129 | event.event = IB_EVENT_COMM_EST; | |
130 | break; | |
131 | case MLX5_EVENT_TYPE_SQ_DRAINED: | |
132 | event.event = IB_EVENT_SQ_DRAINED; | |
133 | break; | |
134 | case MLX5_EVENT_TYPE_SRQ_LAST_WQE: | |
135 | event.event = IB_EVENT_QP_LAST_WQE_REACHED; | |
136 | break; | |
137 | case MLX5_EVENT_TYPE_WQ_CATAS_ERROR: | |
138 | event.event = IB_EVENT_QP_FATAL; | |
139 | break; | |
140 | case MLX5_EVENT_TYPE_PATH_MIG_FAILED: | |
141 | event.event = IB_EVENT_PATH_MIG_ERR; | |
142 | break; | |
143 | case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR: | |
144 | event.event = IB_EVENT_QP_REQ_ERR; | |
145 | break; | |
146 | case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR: | |
147 | event.event = IB_EVENT_QP_ACCESS_ERR; | |
148 | break; | |
149 | default: | |
150 | pr_warn("mlx5_ib: Unexpected event type %d on QP %06x\n", type, qp->qpn); | |
151 | return; | |
152 | } | |
153 | ||
154 | ibqp->event_handler(&event, ibqp->qp_context); | |
155 | } | |
156 | } | |
157 | ||
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) | |
160 | { | |
161 | int wqe_size; | |
162 | int wq_size; | |
163 | ||
164 | /* Sanity check RQ size before proceeding */ | |
165 | if (cap->max_recv_wr > dev->mdev.caps.max_wqes) | |
166 | return -EINVAL; | |
167 | ||
168 | if (!has_rq) { | |
169 | qp->rq.max_gs = 0; | |
170 | qp->rq.wqe_cnt = 0; | |
171 | qp->rq.wqe_shift = 0; | |
172 | } else { | |
173 | if (ucmd) { | |
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; | |
178 | } else { | |
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", | |
187 | wqe_size, | |
188 | dev->mdev.caps.max_rq_desc_sz); | |
189 | return -EINVAL; | |
190 | } | |
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; | |
194 | } | |
195 | } | |
196 | ||
197 | return 0; | |
198 | } | |
199 | ||
200 | static int sq_overhead(enum ib_qp_type qp_type) | |
201 | { | |
618af384 | 202 | int size = 0; |
e126ba97 EC |
203 | |
204 | switch (qp_type) { | |
205 | case IB_QPT_XRC_INI: | |
b125a54b | 206 | size += sizeof(struct mlx5_wqe_xrc_seg); |
e126ba97 EC |
207 | /* fall through */ |
208 | case IB_QPT_RC: | |
209 | size += sizeof(struct mlx5_wqe_ctrl_seg) + | |
210 | sizeof(struct mlx5_wqe_atomic_seg) + | |
211 | sizeof(struct mlx5_wqe_raddr_seg); | |
212 | break; | |
213 | ||
b125a54b EC |
214 | case IB_QPT_XRC_TGT: |
215 | return 0; | |
216 | ||
e126ba97 | 217 | case IB_QPT_UC: |
b125a54b | 218 | size += sizeof(struct mlx5_wqe_ctrl_seg) + |
9e65dc37 EC |
219 | sizeof(struct mlx5_wqe_raddr_seg) + |
220 | sizeof(struct mlx5_wqe_umr_ctrl_seg) + | |
221 | sizeof(struct mlx5_mkey_seg); | |
e126ba97 EC |
222 | break; |
223 | ||
224 | case IB_QPT_UD: | |
225 | case IB_QPT_SMI: | |
226 | case IB_QPT_GSI: | |
b125a54b | 227 | size += sizeof(struct mlx5_wqe_ctrl_seg) + |
e126ba97 EC |
228 | sizeof(struct mlx5_wqe_datagram_seg); |
229 | break; | |
230 | ||
231 | case MLX5_IB_QPT_REG_UMR: | |
b125a54b | 232 | size += sizeof(struct mlx5_wqe_ctrl_seg) + |
e126ba97 EC |
233 | sizeof(struct mlx5_wqe_umr_ctrl_seg) + |
234 | sizeof(struct mlx5_mkey_seg); | |
235 | break; | |
236 | ||
237 | default: | |
238 | return -EINVAL; | |
239 | } | |
240 | ||
241 | return size; | |
242 | } | |
243 | ||
244 | static int calc_send_wqe(struct ib_qp_init_attr *attr) | |
245 | { | |
246 | int inl_size = 0; | |
247 | int size; | |
248 | ||
249 | size = sq_overhead(attr->qp_type); | |
250 | if (size < 0) | |
251 | return size; | |
252 | ||
253 | if (attr->cap.max_inline_data) { | |
254 | inl_size = size + sizeof(struct mlx5_wqe_inline_seg) + | |
255 | attr->cap.max_inline_data; | |
256 | } | |
257 | ||
258 | size += attr->cap.max_send_sge * sizeof(struct mlx5_wqe_data_seg); | |
259 | ||
260 | return ALIGN(max_t(int, inl_size, size), MLX5_SEND_WQE_BB); | |
261 | } | |
262 | ||
263 | static int calc_sq_size(struct mlx5_ib_dev *dev, struct ib_qp_init_attr *attr, | |
264 | struct mlx5_ib_qp *qp) | |
265 | { | |
266 | int wqe_size; | |
267 | int wq_size; | |
268 | ||
269 | if (!attr->cap.max_send_wr) | |
270 | return 0; | |
271 | ||
272 | wqe_size = calc_send_wqe(attr); | |
273 | mlx5_ib_dbg(dev, "wqe_size %d\n", wqe_size); | |
274 | if (wqe_size < 0) | |
275 | return wqe_size; | |
276 | ||
277 | if (wqe_size > dev->mdev.caps.max_sq_desc_sz) { | |
b125a54b EC |
278 | mlx5_ib_dbg(dev, "wqe_size(%d) > max_sq_desc_sz(%d)\n", |
279 | wqe_size, dev->mdev.caps.max_sq_desc_sz); | |
e126ba97 EC |
280 | return -EINVAL; |
281 | } | |
282 | ||
283 | qp->max_inline_data = wqe_size - sq_overhead(attr->qp_type) - | |
284 | sizeof(struct mlx5_wqe_inline_seg); | |
285 | attr->cap.max_inline_data = qp->max_inline_data; | |
286 | ||
287 | wq_size = roundup_pow_of_two(attr->cap.max_send_wr * wqe_size); | |
288 | qp->sq.wqe_cnt = wq_size / MLX5_SEND_WQE_BB; | |
b125a54b EC |
289 | if (qp->sq.wqe_cnt > dev->mdev.caps.max_wqes) { |
290 | mlx5_ib_dbg(dev, "wqe count(%d) exceeds limits(%d)\n", | |
291 | qp->sq.wqe_cnt, dev->mdev.caps.max_wqes); | |
292 | return -ENOMEM; | |
293 | } | |
e126ba97 EC |
294 | qp->sq.wqe_shift = ilog2(MLX5_SEND_WQE_BB); |
295 | qp->sq.max_gs = attr->cap.max_send_sge; | |
b125a54b EC |
296 | qp->sq.max_post = wq_size / wqe_size; |
297 | attr->cap.max_send_wr = qp->sq.max_post; | |
e126ba97 EC |
298 | |
299 | return wq_size; | |
300 | } | |
301 | ||
302 | static int set_user_buf_size(struct mlx5_ib_dev *dev, | |
303 | struct mlx5_ib_qp *qp, | |
304 | struct mlx5_ib_create_qp *ucmd) | |
305 | { | |
306 | int desc_sz = 1 << qp->sq.wqe_shift; | |
307 | ||
308 | if (desc_sz > dev->mdev.caps.max_sq_desc_sz) { | |
309 | mlx5_ib_warn(dev, "desc_sz %d, max_sq_desc_sz %d\n", | |
310 | desc_sz, dev->mdev.caps.max_sq_desc_sz); | |
311 | return -EINVAL; | |
312 | } | |
313 | ||
314 | if (ucmd->sq_wqe_count && ((1 << ilog2(ucmd->sq_wqe_count)) != ucmd->sq_wqe_count)) { | |
315 | mlx5_ib_warn(dev, "sq_wqe_count %d, sq_wqe_count %d\n", | |
316 | ucmd->sq_wqe_count, ucmd->sq_wqe_count); | |
317 | return -EINVAL; | |
318 | } | |
319 | ||
320 | qp->sq.wqe_cnt = ucmd->sq_wqe_count; | |
321 | ||
322 | if (qp->sq.wqe_cnt > dev->mdev.caps.max_wqes) { | |
323 | mlx5_ib_warn(dev, "wqe_cnt %d, max_wqes %d\n", | |
324 | qp->sq.wqe_cnt, dev->mdev.caps.max_wqes); | |
325 | return -EINVAL; | |
326 | } | |
327 | ||
328 | qp->buf_size = (qp->rq.wqe_cnt << qp->rq.wqe_shift) + | |
329 | (qp->sq.wqe_cnt << 6); | |
330 | ||
331 | return 0; | |
332 | } | |
333 | ||
334 | static int qp_has_rq(struct ib_qp_init_attr *attr) | |
335 | { | |
336 | if (attr->qp_type == IB_QPT_XRC_INI || | |
337 | attr->qp_type == IB_QPT_XRC_TGT || attr->srq || | |
338 | attr->qp_type == MLX5_IB_QPT_REG_UMR || | |
339 | !attr->cap.max_recv_wr) | |
340 | return 0; | |
341 | ||
342 | return 1; | |
343 | } | |
344 | ||
c1be5232 EC |
345 | static int first_med_uuar(void) |
346 | { | |
347 | return 1; | |
348 | } | |
349 | ||
350 | static int next_uuar(int n) | |
351 | { | |
352 | n++; | |
353 | ||
354 | while (((n % 4) & 2)) | |
355 | n++; | |
356 | ||
357 | return n; | |
358 | } | |
359 | ||
360 | static int num_med_uuar(struct mlx5_uuar_info *uuari) | |
361 | { | |
362 | int n; | |
363 | ||
364 | n = uuari->num_uars * MLX5_NON_FP_BF_REGS_PER_PAGE - | |
365 | uuari->num_low_latency_uuars - 1; | |
366 | ||
367 | return n >= 0 ? n : 0; | |
368 | } | |
369 | ||
370 | static int max_uuari(struct mlx5_uuar_info *uuari) | |
371 | { | |
372 | return uuari->num_uars * 4; | |
373 | } | |
374 | ||
375 | static int first_hi_uuar(struct mlx5_uuar_info *uuari) | |
376 | { | |
377 | int med; | |
378 | int i; | |
379 | int t; | |
380 | ||
381 | med = num_med_uuar(uuari); | |
382 | for (t = 0, i = first_med_uuar();; i = next_uuar(i)) { | |
383 | t++; | |
384 | if (t == med) | |
385 | return next_uuar(i); | |
386 | } | |
387 | ||
388 | return 0; | |
389 | } | |
390 | ||
e126ba97 EC |
391 | static int alloc_high_class_uuar(struct mlx5_uuar_info *uuari) |
392 | { | |
e126ba97 EC |
393 | int i; |
394 | ||
c1be5232 | 395 | for (i = first_hi_uuar(uuari); i < max_uuari(uuari); i = next_uuar(i)) { |
e126ba97 EC |
396 | if (!test_bit(i, uuari->bitmap)) { |
397 | set_bit(i, uuari->bitmap); | |
398 | uuari->count[i]++; | |
399 | return i; | |
400 | } | |
401 | } | |
402 | ||
403 | return -ENOMEM; | |
404 | } | |
405 | ||
406 | static int alloc_med_class_uuar(struct mlx5_uuar_info *uuari) | |
407 | { | |
c1be5232 | 408 | int minidx = first_med_uuar(); |
e126ba97 EC |
409 | int i; |
410 | ||
c1be5232 | 411 | for (i = first_med_uuar(); i < first_hi_uuar(uuari); i = next_uuar(i)) { |
e126ba97 EC |
412 | if (uuari->count[i] < uuari->count[minidx]) |
413 | minidx = i; | |
414 | } | |
415 | ||
416 | uuari->count[minidx]++; | |
417 | return minidx; | |
418 | } | |
419 | ||
420 | static int alloc_uuar(struct mlx5_uuar_info *uuari, | |
421 | enum mlx5_ib_latency_class lat) | |
422 | { | |
423 | int uuarn = -EINVAL; | |
424 | ||
425 | mutex_lock(&uuari->lock); | |
426 | switch (lat) { | |
427 | case MLX5_IB_LATENCY_CLASS_LOW: | |
428 | uuarn = 0; | |
429 | uuari->count[uuarn]++; | |
430 | break; | |
431 | ||
432 | case MLX5_IB_LATENCY_CLASS_MEDIUM: | |
78c0f98c EC |
433 | if (uuari->ver < 2) |
434 | uuarn = -ENOMEM; | |
435 | else | |
436 | uuarn = alloc_med_class_uuar(uuari); | |
e126ba97 EC |
437 | break; |
438 | ||
439 | case MLX5_IB_LATENCY_CLASS_HIGH: | |
78c0f98c EC |
440 | if (uuari->ver < 2) |
441 | uuarn = -ENOMEM; | |
442 | else | |
443 | uuarn = alloc_high_class_uuar(uuari); | |
e126ba97 EC |
444 | break; |
445 | ||
446 | case MLX5_IB_LATENCY_CLASS_FAST_PATH: | |
447 | uuarn = 2; | |
448 | break; | |
449 | } | |
450 | mutex_unlock(&uuari->lock); | |
451 | ||
452 | return uuarn; | |
453 | } | |
454 | ||
455 | static void free_med_class_uuar(struct mlx5_uuar_info *uuari, int uuarn) | |
456 | { | |
457 | clear_bit(uuarn, uuari->bitmap); | |
458 | --uuari->count[uuarn]; | |
459 | } | |
460 | ||
461 | static void free_high_class_uuar(struct mlx5_uuar_info *uuari, int uuarn) | |
462 | { | |
463 | clear_bit(uuarn, uuari->bitmap); | |
464 | --uuari->count[uuarn]; | |
465 | } | |
466 | ||
467 | static void free_uuar(struct mlx5_uuar_info *uuari, int uuarn) | |
468 | { | |
469 | int nuuars = uuari->num_uars * MLX5_BF_REGS_PER_PAGE; | |
470 | int high_uuar = nuuars - uuari->num_low_latency_uuars; | |
471 | ||
472 | mutex_lock(&uuari->lock); | |
473 | if (uuarn == 0) { | |
474 | --uuari->count[uuarn]; | |
475 | goto out; | |
476 | } | |
477 | ||
478 | if (uuarn < high_uuar) { | |
479 | free_med_class_uuar(uuari, uuarn); | |
480 | goto out; | |
481 | } | |
482 | ||
483 | free_high_class_uuar(uuari, uuarn); | |
484 | ||
485 | out: | |
486 | mutex_unlock(&uuari->lock); | |
487 | } | |
488 | ||
489 | static enum mlx5_qp_state to_mlx5_state(enum ib_qp_state state) | |
490 | { | |
491 | switch (state) { | |
492 | case IB_QPS_RESET: return MLX5_QP_STATE_RST; | |
493 | case IB_QPS_INIT: return MLX5_QP_STATE_INIT; | |
494 | case IB_QPS_RTR: return MLX5_QP_STATE_RTR; | |
495 | case IB_QPS_RTS: return MLX5_QP_STATE_RTS; | |
496 | case IB_QPS_SQD: return MLX5_QP_STATE_SQD; | |
497 | case IB_QPS_SQE: return MLX5_QP_STATE_SQER; | |
498 | case IB_QPS_ERR: return MLX5_QP_STATE_ERR; | |
499 | default: return -1; | |
500 | } | |
501 | } | |
502 | ||
503 | static int to_mlx5_st(enum ib_qp_type type) | |
504 | { | |
505 | switch (type) { | |
506 | case IB_QPT_RC: return MLX5_QP_ST_RC; | |
507 | case IB_QPT_UC: return MLX5_QP_ST_UC; | |
508 | case IB_QPT_UD: return MLX5_QP_ST_UD; | |
509 | case MLX5_IB_QPT_REG_UMR: return MLX5_QP_ST_REG_UMR; | |
510 | case IB_QPT_XRC_INI: | |
511 | case IB_QPT_XRC_TGT: return MLX5_QP_ST_XRC; | |
512 | case IB_QPT_SMI: return MLX5_QP_ST_QP0; | |
513 | case IB_QPT_GSI: return MLX5_QP_ST_QP1; | |
514 | case IB_QPT_RAW_IPV6: return MLX5_QP_ST_RAW_IPV6; | |
515 | case IB_QPT_RAW_ETHERTYPE: return MLX5_QP_ST_RAW_ETHERTYPE; | |
516 | case IB_QPT_RAW_PACKET: | |
517 | case IB_QPT_MAX: | |
518 | default: return -EINVAL; | |
519 | } | |
520 | } | |
521 | ||
522 | static int uuarn_to_uar_index(struct mlx5_uuar_info *uuari, int uuarn) | |
523 | { | |
524 | return uuari->uars[uuarn / MLX5_BF_REGS_PER_PAGE].index; | |
525 | } | |
526 | ||
527 | static int create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd, | |
528 | struct mlx5_ib_qp *qp, struct ib_udata *udata, | |
529 | struct mlx5_create_qp_mbox_in **in, | |
530 | struct mlx5_ib_create_qp_resp *resp, int *inlen) | |
531 | { | |
532 | struct mlx5_ib_ucontext *context; | |
533 | struct mlx5_ib_create_qp ucmd; | |
9e9c47d0 | 534 | int page_shift = 0; |
e126ba97 EC |
535 | int uar_index; |
536 | int npages; | |
9e9c47d0 | 537 | u32 offset = 0; |
e126ba97 | 538 | int uuarn; |
9e9c47d0 | 539 | int ncont = 0; |
e126ba97 EC |
540 | int err; |
541 | ||
542 | err = ib_copy_from_udata(&ucmd, udata, sizeof(ucmd)); | |
543 | if (err) { | |
544 | mlx5_ib_dbg(dev, "copy failed\n"); | |
545 | return err; | |
546 | } | |
547 | ||
548 | context = to_mucontext(pd->uobject->context); | |
549 | /* | |
550 | * TBD: should come from the verbs when we have the API | |
551 | */ | |
552 | uuarn = alloc_uuar(&context->uuari, MLX5_IB_LATENCY_CLASS_HIGH); | |
553 | if (uuarn < 0) { | |
554 | mlx5_ib_dbg(dev, "failed to allocate low latency UUAR\n"); | |
c1be5232 EC |
555 | mlx5_ib_dbg(dev, "reverting to medium latency\n"); |
556 | uuarn = alloc_uuar(&context->uuari, MLX5_IB_LATENCY_CLASS_MEDIUM); | |
e126ba97 | 557 | if (uuarn < 0) { |
c1be5232 EC |
558 | mlx5_ib_dbg(dev, "failed to allocate medium latency UUAR\n"); |
559 | mlx5_ib_dbg(dev, "reverting to high latency\n"); | |
560 | uuarn = alloc_uuar(&context->uuari, MLX5_IB_LATENCY_CLASS_LOW); | |
561 | if (uuarn < 0) { | |
562 | mlx5_ib_warn(dev, "uuar allocation failed\n"); | |
563 | return uuarn; | |
564 | } | |
e126ba97 EC |
565 | } |
566 | } | |
567 | ||
568 | uar_index = uuarn_to_uar_index(&context->uuari, uuarn); | |
569 | mlx5_ib_dbg(dev, "uuarn 0x%x, uar_index 0x%x\n", uuarn, uar_index); | |
570 | ||
571 | err = set_user_buf_size(dev, qp, &ucmd); | |
572 | if (err) | |
573 | goto err_uuar; | |
574 | ||
9e9c47d0 EC |
575 | if (ucmd.buf_addr && qp->buf_size) { |
576 | qp->umem = ib_umem_get(pd->uobject->context, ucmd.buf_addr, | |
577 | qp->buf_size, 0, 0); | |
578 | if (IS_ERR(qp->umem)) { | |
579 | mlx5_ib_dbg(dev, "umem_get failed\n"); | |
580 | err = PTR_ERR(qp->umem); | |
581 | goto err_uuar; | |
582 | } | |
583 | } else { | |
584 | qp->umem = NULL; | |
e126ba97 EC |
585 | } |
586 | ||
9e9c47d0 EC |
587 | if (qp->umem) { |
588 | mlx5_ib_cont_pages(qp->umem, ucmd.buf_addr, &npages, &page_shift, | |
589 | &ncont, NULL); | |
590 | err = mlx5_ib_get_buf_offset(ucmd.buf_addr, page_shift, &offset); | |
591 | if (err) { | |
592 | mlx5_ib_warn(dev, "bad offset\n"); | |
593 | goto err_umem; | |
594 | } | |
595 | mlx5_ib_dbg(dev, "addr 0x%llx, size %d, npages %d, page_shift %d, ncont %d, offset %d\n", | |
596 | ucmd.buf_addr, qp->buf_size, npages, page_shift, ncont, offset); | |
e126ba97 | 597 | } |
e126ba97 EC |
598 | |
599 | *inlen = sizeof(**in) + sizeof(*(*in)->pas) * ncont; | |
600 | *in = mlx5_vzalloc(*inlen); | |
601 | if (!*in) { | |
602 | err = -ENOMEM; | |
603 | goto err_umem; | |
604 | } | |
9e9c47d0 EC |
605 | if (qp->umem) |
606 | mlx5_ib_populate_pas(dev, qp->umem, page_shift, (*in)->pas, 0); | |
e126ba97 | 607 | (*in)->ctx.log_pg_sz_remote_qpn = |
1b77d2bd | 608 | cpu_to_be32((page_shift - MLX5_ADAPTER_PAGE_SHIFT) << 24); |
e126ba97 EC |
609 | (*in)->ctx.params2 = cpu_to_be32(offset << 6); |
610 | ||
611 | (*in)->ctx.qp_counter_set_usr_page = cpu_to_be32(uar_index); | |
612 | resp->uuar_index = uuarn; | |
613 | qp->uuarn = uuarn; | |
614 | ||
615 | err = mlx5_ib_db_map_user(context, ucmd.db_addr, &qp->db); | |
616 | if (err) { | |
617 | mlx5_ib_dbg(dev, "map failed\n"); | |
618 | goto err_free; | |
619 | } | |
620 | ||
621 | err = ib_copy_to_udata(udata, resp, sizeof(*resp)); | |
622 | if (err) { | |
623 | mlx5_ib_dbg(dev, "copy failed\n"); | |
624 | goto err_unmap; | |
625 | } | |
626 | qp->create_type = MLX5_QP_USER; | |
627 | ||
628 | return 0; | |
629 | ||
630 | err_unmap: | |
631 | mlx5_ib_db_unmap_user(context, &qp->db); | |
632 | ||
633 | err_free: | |
634 | mlx5_vfree(*in); | |
635 | ||
636 | err_umem: | |
9e9c47d0 EC |
637 | if (qp->umem) |
638 | ib_umem_release(qp->umem); | |
e126ba97 EC |
639 | |
640 | err_uuar: | |
641 | free_uuar(&context->uuari, uuarn); | |
642 | return err; | |
643 | } | |
644 | ||
645 | static void destroy_qp_user(struct ib_pd *pd, struct mlx5_ib_qp *qp) | |
646 | { | |
647 | struct mlx5_ib_ucontext *context; | |
648 | ||
649 | context = to_mucontext(pd->uobject->context); | |
650 | mlx5_ib_db_unmap_user(context, &qp->db); | |
9e9c47d0 EC |
651 | if (qp->umem) |
652 | ib_umem_release(qp->umem); | |
e126ba97 EC |
653 | free_uuar(&context->uuari, qp->uuarn); |
654 | } | |
655 | ||
656 | static int create_kernel_qp(struct mlx5_ib_dev *dev, | |
657 | struct ib_qp_init_attr *init_attr, | |
658 | struct mlx5_ib_qp *qp, | |
659 | struct mlx5_create_qp_mbox_in **in, int *inlen) | |
660 | { | |
661 | enum mlx5_ib_latency_class lc = MLX5_IB_LATENCY_CLASS_LOW; | |
662 | struct mlx5_uuar_info *uuari; | |
663 | int uar_index; | |
664 | int uuarn; | |
665 | int err; | |
666 | ||
667 | uuari = &dev->mdev.priv.uuari; | |
1a4c3a3d EC |
668 | if (init_attr->create_flags) |
669 | return -EINVAL; | |
e126ba97 EC |
670 | |
671 | if (init_attr->qp_type == MLX5_IB_QPT_REG_UMR) | |
672 | lc = MLX5_IB_LATENCY_CLASS_FAST_PATH; | |
673 | ||
674 | uuarn = alloc_uuar(uuari, lc); | |
675 | if (uuarn < 0) { | |
676 | mlx5_ib_dbg(dev, "\n"); | |
677 | return -ENOMEM; | |
678 | } | |
679 | ||
680 | qp->bf = &uuari->bfs[uuarn]; | |
681 | uar_index = qp->bf->uar->index; | |
682 | ||
683 | err = calc_sq_size(dev, init_attr, qp); | |
684 | if (err < 0) { | |
685 | mlx5_ib_dbg(dev, "err %d\n", err); | |
686 | goto err_uuar; | |
687 | } | |
688 | ||
689 | qp->rq.offset = 0; | |
690 | qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift; | |
691 | qp->buf_size = err + (qp->rq.wqe_cnt << qp->rq.wqe_shift); | |
692 | ||
693 | err = mlx5_buf_alloc(&dev->mdev, qp->buf_size, PAGE_SIZE * 2, &qp->buf); | |
694 | if (err) { | |
695 | mlx5_ib_dbg(dev, "err %d\n", err); | |
696 | goto err_uuar; | |
697 | } | |
698 | ||
699 | qp->sq.qend = mlx5_get_send_wqe(qp, qp->sq.wqe_cnt); | |
700 | *inlen = sizeof(**in) + sizeof(*(*in)->pas) * qp->buf.npages; | |
701 | *in = mlx5_vzalloc(*inlen); | |
702 | if (!*in) { | |
703 | err = -ENOMEM; | |
704 | goto err_buf; | |
705 | } | |
706 | (*in)->ctx.qp_counter_set_usr_page = cpu_to_be32(uar_index); | |
1b77d2bd EC |
707 | (*in)->ctx.log_pg_sz_remote_qpn = |
708 | cpu_to_be32((qp->buf.page_shift - MLX5_ADAPTER_PAGE_SHIFT) << 24); | |
e126ba97 EC |
709 | /* Set "fast registration enabled" for all kernel QPs */ |
710 | (*in)->ctx.params1 |= cpu_to_be32(1 << 11); | |
711 | (*in)->ctx.sq_crq_size |= cpu_to_be16(1 << 4); | |
712 | ||
713 | mlx5_fill_page_array(&qp->buf, (*in)->pas); | |
714 | ||
715 | err = mlx5_db_alloc(&dev->mdev, &qp->db); | |
716 | if (err) { | |
717 | mlx5_ib_dbg(dev, "err %d\n", err); | |
718 | goto err_free; | |
719 | } | |
720 | ||
721 | qp->db.db[0] = 0; | |
722 | qp->db.db[1] = 0; | |
723 | ||
724 | qp->sq.wrid = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.wrid), GFP_KERNEL); | |
725 | qp->sq.wr_data = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.wr_data), GFP_KERNEL); | |
726 | qp->rq.wrid = kmalloc(qp->rq.wqe_cnt * sizeof(*qp->rq.wrid), GFP_KERNEL); | |
727 | qp->sq.w_list = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.w_list), GFP_KERNEL); | |
728 | qp->sq.wqe_head = kmalloc(qp->sq.wqe_cnt * sizeof(*qp->sq.wqe_head), GFP_KERNEL); | |
729 | ||
730 | if (!qp->sq.wrid || !qp->sq.wr_data || !qp->rq.wrid || | |
731 | !qp->sq.w_list || !qp->sq.wqe_head) { | |
732 | err = -ENOMEM; | |
733 | goto err_wrid; | |
734 | } | |
735 | qp->create_type = MLX5_QP_KERNEL; | |
736 | ||
737 | return 0; | |
738 | ||
739 | err_wrid: | |
740 | mlx5_db_free(&dev->mdev, &qp->db); | |
741 | kfree(qp->sq.wqe_head); | |
742 | kfree(qp->sq.w_list); | |
743 | kfree(qp->sq.wrid); | |
744 | kfree(qp->sq.wr_data); | |
745 | kfree(qp->rq.wrid); | |
746 | ||
747 | err_free: | |
748 | mlx5_vfree(*in); | |
749 | ||
750 | err_buf: | |
751 | mlx5_buf_free(&dev->mdev, &qp->buf); | |
752 | ||
753 | err_uuar: | |
754 | free_uuar(&dev->mdev.priv.uuari, uuarn); | |
755 | return err; | |
756 | } | |
757 | ||
758 | static void destroy_qp_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp) | |
759 | { | |
760 | mlx5_db_free(&dev->mdev, &qp->db); | |
761 | kfree(qp->sq.wqe_head); | |
762 | kfree(qp->sq.w_list); | |
763 | kfree(qp->sq.wrid); | |
764 | kfree(qp->sq.wr_data); | |
765 | kfree(qp->rq.wrid); | |
766 | mlx5_buf_free(&dev->mdev, &qp->buf); | |
767 | free_uuar(&dev->mdev.priv.uuari, qp->bf->uuarn); | |
768 | } | |
769 | ||
770 | static __be32 get_rx_type(struct mlx5_ib_qp *qp, struct ib_qp_init_attr *attr) | |
771 | { | |
772 | if (attr->srq || (attr->qp_type == IB_QPT_XRC_TGT) || | |
773 | (attr->qp_type == IB_QPT_XRC_INI)) | |
774 | return cpu_to_be32(MLX5_SRQ_RQ); | |
775 | else if (!qp->has_rq) | |
776 | return cpu_to_be32(MLX5_ZERO_LEN_RQ); | |
777 | else | |
778 | return cpu_to_be32(MLX5_NON_ZERO_RQ); | |
779 | } | |
780 | ||
781 | static int is_connected(enum ib_qp_type qp_type) | |
782 | { | |
783 | if (qp_type == IB_QPT_RC || qp_type == IB_QPT_UC) | |
784 | return 1; | |
785 | ||
786 | return 0; | |
787 | } | |
788 | ||
789 | static int create_qp_common(struct mlx5_ib_dev *dev, struct ib_pd *pd, | |
790 | struct ib_qp_init_attr *init_attr, | |
791 | struct ib_udata *udata, struct mlx5_ib_qp *qp) | |
792 | { | |
793 | struct mlx5_ib_resources *devr = &dev->devr; | |
794 | struct mlx5_ib_create_qp_resp resp; | |
795 | struct mlx5_create_qp_mbox_in *in; | |
796 | struct mlx5_ib_create_qp ucmd; | |
797 | int inlen = sizeof(*in); | |
798 | int err; | |
799 | ||
800 | mutex_init(&qp->mutex); | |
801 | spin_lock_init(&qp->sq.lock); | |
802 | spin_lock_init(&qp->rq.lock); | |
803 | ||
804 | if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) | |
805 | qp->sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE; | |
806 | ||
807 | if (pd && pd->uobject) { | |
808 | if (ib_copy_from_udata(&ucmd, udata, sizeof(ucmd))) { | |
809 | mlx5_ib_dbg(dev, "copy failed\n"); | |
810 | return -EFAULT; | |
811 | } | |
812 | ||
813 | qp->wq_sig = !!(ucmd.flags & MLX5_QP_FLAG_SIGNATURE); | |
814 | qp->scat_cqe = !!(ucmd.flags & MLX5_QP_FLAG_SCATTER_CQE); | |
815 | } else { | |
816 | qp->wq_sig = !!wq_signature; | |
817 | } | |
818 | ||
819 | qp->has_rq = qp_has_rq(init_attr); | |
820 | err = set_rq_size(dev, &init_attr->cap, qp->has_rq, | |
821 | qp, (pd && pd->uobject) ? &ucmd : NULL); | |
822 | if (err) { | |
823 | mlx5_ib_dbg(dev, "err %d\n", err); | |
824 | return err; | |
825 | } | |
826 | ||
827 | if (pd) { | |
828 | if (pd->uobject) { | |
829 | mlx5_ib_dbg(dev, "requested sq_wqe_count (%d)\n", ucmd.sq_wqe_count); | |
830 | if (ucmd.rq_wqe_shift != qp->rq.wqe_shift || | |
831 | ucmd.rq_wqe_count != qp->rq.wqe_cnt) { | |
832 | mlx5_ib_dbg(dev, "invalid rq params\n"); | |
833 | return -EINVAL; | |
834 | } | |
835 | if (ucmd.sq_wqe_count > dev->mdev.caps.max_wqes) { | |
836 | mlx5_ib_dbg(dev, "requested sq_wqe_count (%d) > max allowed (%d)\n", | |
837 | ucmd.sq_wqe_count, dev->mdev.caps.max_wqes); | |
838 | return -EINVAL; | |
839 | } | |
840 | err = create_user_qp(dev, pd, qp, udata, &in, &resp, &inlen); | |
841 | if (err) | |
842 | mlx5_ib_dbg(dev, "err %d\n", err); | |
843 | } else { | |
844 | err = create_kernel_qp(dev, init_attr, qp, &in, &inlen); | |
845 | if (err) | |
846 | mlx5_ib_dbg(dev, "err %d\n", err); | |
847 | else | |
848 | qp->pa_lkey = to_mpd(pd)->pa_lkey; | |
849 | } | |
850 | ||
851 | if (err) | |
852 | return err; | |
853 | } else { | |
854 | in = mlx5_vzalloc(sizeof(*in)); | |
855 | if (!in) | |
856 | return -ENOMEM; | |
857 | ||
858 | qp->create_type = MLX5_QP_EMPTY; | |
859 | } | |
860 | ||
861 | if (is_sqp(init_attr->qp_type)) | |
862 | qp->port = init_attr->port_num; | |
863 | ||
864 | in->ctx.flags = cpu_to_be32(to_mlx5_st(init_attr->qp_type) << 16 | | |
865 | MLX5_QP_PM_MIGRATED << 11); | |
866 | ||
867 | if (init_attr->qp_type != MLX5_IB_QPT_REG_UMR) | |
868 | in->ctx.flags_pd = cpu_to_be32(to_mpd(pd ? pd : devr->p0)->pdn); | |
869 | else | |
870 | in->ctx.flags_pd = cpu_to_be32(MLX5_QP_LAT_SENSITIVE); | |
871 | ||
872 | if (qp->wq_sig) | |
873 | in->ctx.flags_pd |= cpu_to_be32(MLX5_QP_ENABLE_SIG); | |
874 | ||
875 | if (qp->scat_cqe && is_connected(init_attr->qp_type)) { | |
876 | int rcqe_sz; | |
877 | int scqe_sz; | |
878 | ||
879 | rcqe_sz = mlx5_ib_get_cqe_size(dev, init_attr->recv_cq); | |
880 | scqe_sz = mlx5_ib_get_cqe_size(dev, init_attr->send_cq); | |
881 | ||
882 | if (rcqe_sz == 128) | |
883 | in->ctx.cs_res = MLX5_RES_SCAT_DATA64_CQE; | |
884 | else | |
885 | in->ctx.cs_res = MLX5_RES_SCAT_DATA32_CQE; | |
886 | ||
887 | if (init_attr->sq_sig_type == IB_SIGNAL_ALL_WR) { | |
888 | if (scqe_sz == 128) | |
889 | in->ctx.cs_req = MLX5_REQ_SCAT_DATA64_CQE; | |
890 | else | |
891 | in->ctx.cs_req = MLX5_REQ_SCAT_DATA32_CQE; | |
892 | } | |
893 | } | |
894 | ||
895 | if (qp->rq.wqe_cnt) { | |
896 | in->ctx.rq_size_stride = (qp->rq.wqe_shift - 4); | |
897 | in->ctx.rq_size_stride |= ilog2(qp->rq.wqe_cnt) << 3; | |
898 | } | |
899 | ||
900 | in->ctx.rq_type_srqn = get_rx_type(qp, init_attr); | |
901 | ||
902 | if (qp->sq.wqe_cnt) | |
903 | in->ctx.sq_crq_size |= cpu_to_be16(ilog2(qp->sq.wqe_cnt) << 11); | |
904 | else | |
905 | in->ctx.sq_crq_size |= cpu_to_be16(0x8000); | |
906 | ||
907 | /* Set default resources */ | |
908 | switch (init_attr->qp_type) { | |
909 | case IB_QPT_XRC_TGT: | |
910 | in->ctx.cqn_recv = cpu_to_be32(to_mcq(devr->c0)->mcq.cqn); | |
911 | in->ctx.cqn_send = cpu_to_be32(to_mcq(devr->c0)->mcq.cqn); | |
912 | in->ctx.rq_type_srqn |= cpu_to_be32(to_msrq(devr->s0)->msrq.srqn); | |
913 | in->ctx.xrcd = cpu_to_be32(to_mxrcd(init_attr->xrcd)->xrcdn); | |
914 | break; | |
915 | case IB_QPT_XRC_INI: | |
916 | in->ctx.cqn_recv = cpu_to_be32(to_mcq(devr->c0)->mcq.cqn); | |
917 | in->ctx.xrcd = cpu_to_be32(to_mxrcd(devr->x1)->xrcdn); | |
918 | in->ctx.rq_type_srqn |= cpu_to_be32(to_msrq(devr->s0)->msrq.srqn); | |
919 | break; | |
920 | default: | |
921 | if (init_attr->srq) { | |
922 | in->ctx.xrcd = cpu_to_be32(to_mxrcd(devr->x0)->xrcdn); | |
923 | in->ctx.rq_type_srqn |= cpu_to_be32(to_msrq(init_attr->srq)->msrq.srqn); | |
924 | } else { | |
925 | in->ctx.xrcd = cpu_to_be32(to_mxrcd(devr->x1)->xrcdn); | |
926 | in->ctx.rq_type_srqn |= cpu_to_be32(to_msrq(devr->s0)->msrq.srqn); | |
927 | } | |
928 | } | |
929 | ||
930 | if (init_attr->send_cq) | |
931 | in->ctx.cqn_send = cpu_to_be32(to_mcq(init_attr->send_cq)->mcq.cqn); | |
932 | ||
933 | if (init_attr->recv_cq) | |
934 | in->ctx.cqn_recv = cpu_to_be32(to_mcq(init_attr->recv_cq)->mcq.cqn); | |
935 | ||
936 | in->ctx.db_rec_addr = cpu_to_be64(qp->db.dma); | |
937 | ||
938 | err = mlx5_core_create_qp(&dev->mdev, &qp->mqp, in, inlen); | |
939 | if (err) { | |
940 | mlx5_ib_dbg(dev, "create qp failed\n"); | |
941 | goto err_create; | |
942 | } | |
943 | ||
944 | mlx5_vfree(in); | |
945 | /* Hardware wants QPN written in big-endian order (after | |
946 | * shifting) for send doorbell. Precompute this value to save | |
947 | * a little bit when posting sends. | |
948 | */ | |
949 | qp->doorbell_qpn = swab32(qp->mqp.qpn << 8); | |
950 | ||
951 | qp->mqp.event = mlx5_ib_qp_event; | |
952 | ||
953 | return 0; | |
954 | ||
955 | err_create: | |
956 | if (qp->create_type == MLX5_QP_USER) | |
957 | destroy_qp_user(pd, qp); | |
958 | else if (qp->create_type == MLX5_QP_KERNEL) | |
959 | destroy_qp_kernel(dev, qp); | |
960 | ||
961 | mlx5_vfree(in); | |
962 | return err; | |
963 | } | |
964 | ||
965 | static void mlx5_ib_lock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq) | |
966 | __acquires(&send_cq->lock) __acquires(&recv_cq->lock) | |
967 | { | |
968 | if (send_cq) { | |
969 | if (recv_cq) { | |
970 | if (send_cq->mcq.cqn < recv_cq->mcq.cqn) { | |
971 | spin_lock_irq(&send_cq->lock); | |
972 | spin_lock_nested(&recv_cq->lock, | |
973 | SINGLE_DEPTH_NESTING); | |
974 | } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) { | |
975 | spin_lock_irq(&send_cq->lock); | |
976 | __acquire(&recv_cq->lock); | |
977 | } else { | |
978 | spin_lock_irq(&recv_cq->lock); | |
979 | spin_lock_nested(&send_cq->lock, | |
980 | SINGLE_DEPTH_NESTING); | |
981 | } | |
982 | } else { | |
983 | spin_lock_irq(&send_cq->lock); | |
984 | } | |
985 | } else if (recv_cq) { | |
986 | spin_lock_irq(&recv_cq->lock); | |
987 | } | |
988 | } | |
989 | ||
990 | static void mlx5_ib_unlock_cqs(struct mlx5_ib_cq *send_cq, struct mlx5_ib_cq *recv_cq) | |
991 | __releases(&send_cq->lock) __releases(&recv_cq->lock) | |
992 | { | |
993 | if (send_cq) { | |
994 | if (recv_cq) { | |
995 | if (send_cq->mcq.cqn < recv_cq->mcq.cqn) { | |
996 | spin_unlock(&recv_cq->lock); | |
997 | spin_unlock_irq(&send_cq->lock); | |
998 | } else if (send_cq->mcq.cqn == recv_cq->mcq.cqn) { | |
999 | __release(&recv_cq->lock); | |
1000 | spin_unlock_irq(&send_cq->lock); | |
1001 | } else { | |
1002 | spin_unlock(&send_cq->lock); | |
1003 | spin_unlock_irq(&recv_cq->lock); | |
1004 | } | |
1005 | } else { | |
1006 | spin_unlock_irq(&send_cq->lock); | |
1007 | } | |
1008 | } else if (recv_cq) { | |
1009 | spin_unlock_irq(&recv_cq->lock); | |
1010 | } | |
1011 | } | |
1012 | ||
1013 | static struct mlx5_ib_pd *get_pd(struct mlx5_ib_qp *qp) | |
1014 | { | |
1015 | return to_mpd(qp->ibqp.pd); | |
1016 | } | |
1017 | ||
1018 | static void get_cqs(struct mlx5_ib_qp *qp, | |
1019 | struct mlx5_ib_cq **send_cq, struct mlx5_ib_cq **recv_cq) | |
1020 | { | |
1021 | switch (qp->ibqp.qp_type) { | |
1022 | case IB_QPT_XRC_TGT: | |
1023 | *send_cq = NULL; | |
1024 | *recv_cq = NULL; | |
1025 | break; | |
1026 | case MLX5_IB_QPT_REG_UMR: | |
1027 | case IB_QPT_XRC_INI: | |
1028 | *send_cq = to_mcq(qp->ibqp.send_cq); | |
1029 | *recv_cq = NULL; | |
1030 | break; | |
1031 | ||
1032 | case IB_QPT_SMI: | |
1033 | case IB_QPT_GSI: | |
1034 | case IB_QPT_RC: | |
1035 | case IB_QPT_UC: | |
1036 | case IB_QPT_UD: | |
1037 | case IB_QPT_RAW_IPV6: | |
1038 | case IB_QPT_RAW_ETHERTYPE: | |
1039 | *send_cq = to_mcq(qp->ibqp.send_cq); | |
1040 | *recv_cq = to_mcq(qp->ibqp.recv_cq); | |
1041 | break; | |
1042 | ||
1043 | case IB_QPT_RAW_PACKET: | |
1044 | case IB_QPT_MAX: | |
1045 | default: | |
1046 | *send_cq = NULL; | |
1047 | *recv_cq = NULL; | |
1048 | break; | |
1049 | } | |
1050 | } | |
1051 | ||
1052 | static void destroy_qp_common(struct mlx5_ib_dev *dev, struct mlx5_ib_qp *qp) | |
1053 | { | |
1054 | struct mlx5_ib_cq *send_cq, *recv_cq; | |
1055 | struct mlx5_modify_qp_mbox_in *in; | |
1056 | int err; | |
1057 | ||
1058 | in = kzalloc(sizeof(*in), GFP_KERNEL); | |
1059 | if (!in) | |
1060 | return; | |
1061 | if (qp->state != IB_QPS_RESET) | |
1062 | if (mlx5_core_qp_modify(&dev->mdev, to_mlx5_state(qp->state), | |
1063 | MLX5_QP_STATE_RST, in, sizeof(*in), &qp->mqp)) | |
1064 | mlx5_ib_warn(dev, "mlx5_ib: modify QP %06x to RESET failed\n", | |
1065 | qp->mqp.qpn); | |
1066 | ||
1067 | get_cqs(qp, &send_cq, &recv_cq); | |
1068 | ||
1069 | if (qp->create_type == MLX5_QP_KERNEL) { | |
1070 | mlx5_ib_lock_cqs(send_cq, recv_cq); | |
1071 | __mlx5_ib_cq_clean(recv_cq, qp->mqp.qpn, | |
1072 | qp->ibqp.srq ? to_msrq(qp->ibqp.srq) : NULL); | |
1073 | if (send_cq != recv_cq) | |
1074 | __mlx5_ib_cq_clean(send_cq, qp->mqp.qpn, NULL); | |
1075 | mlx5_ib_unlock_cqs(send_cq, recv_cq); | |
1076 | } | |
1077 | ||
1078 | err = mlx5_core_destroy_qp(&dev->mdev, &qp->mqp); | |
1079 | if (err) | |
1080 | mlx5_ib_warn(dev, "failed to destroy QP 0x%x\n", qp->mqp.qpn); | |
1081 | kfree(in); | |
1082 | ||
1083 | ||
1084 | if (qp->create_type == MLX5_QP_KERNEL) | |
1085 | destroy_qp_kernel(dev, qp); | |
1086 | else if (qp->create_type == MLX5_QP_USER) | |
1087 | destroy_qp_user(&get_pd(qp)->ibpd, qp); | |
1088 | } | |
1089 | ||
1090 | static const char *ib_qp_type_str(enum ib_qp_type type) | |
1091 | { | |
1092 | switch (type) { | |
1093 | case IB_QPT_SMI: | |
1094 | return "IB_QPT_SMI"; | |
1095 | case IB_QPT_GSI: | |
1096 | return "IB_QPT_GSI"; | |
1097 | case IB_QPT_RC: | |
1098 | return "IB_QPT_RC"; | |
1099 | case IB_QPT_UC: | |
1100 | return "IB_QPT_UC"; | |
1101 | case IB_QPT_UD: | |
1102 | return "IB_QPT_UD"; | |
1103 | case IB_QPT_RAW_IPV6: | |
1104 | return "IB_QPT_RAW_IPV6"; | |
1105 | case IB_QPT_RAW_ETHERTYPE: | |
1106 | return "IB_QPT_RAW_ETHERTYPE"; | |
1107 | case IB_QPT_XRC_INI: | |
1108 | return "IB_QPT_XRC_INI"; | |
1109 | case IB_QPT_XRC_TGT: | |
1110 | return "IB_QPT_XRC_TGT"; | |
1111 | case IB_QPT_RAW_PACKET: | |
1112 | return "IB_QPT_RAW_PACKET"; | |
1113 | case MLX5_IB_QPT_REG_UMR: | |
1114 | return "MLX5_IB_QPT_REG_UMR"; | |
1115 | case IB_QPT_MAX: | |
1116 | default: | |
1117 | return "Invalid QP type"; | |
1118 | } | |
1119 | } | |
1120 | ||
1121 | struct ib_qp *mlx5_ib_create_qp(struct ib_pd *pd, | |
1122 | struct ib_qp_init_attr *init_attr, | |
1123 | struct ib_udata *udata) | |
1124 | { | |
1125 | struct mlx5_ib_dev *dev; | |
1126 | struct mlx5_ib_qp *qp; | |
1127 | u16 xrcdn = 0; | |
1128 | int err; | |
1129 | ||
1130 | if (pd) { | |
1131 | dev = to_mdev(pd->device); | |
1132 | } else { | |
1133 | /* being cautious here */ | |
1134 | if (init_attr->qp_type != IB_QPT_XRC_TGT && | |
1135 | init_attr->qp_type != MLX5_IB_QPT_REG_UMR) { | |
1136 | pr_warn("%s: no PD for transport %s\n", __func__, | |
1137 | ib_qp_type_str(init_attr->qp_type)); | |
1138 | return ERR_PTR(-EINVAL); | |
1139 | } | |
1140 | dev = to_mdev(to_mxrcd(init_attr->xrcd)->ibxrcd.device); | |
1141 | } | |
1142 | ||
1143 | switch (init_attr->qp_type) { | |
1144 | case IB_QPT_XRC_TGT: | |
1145 | case IB_QPT_XRC_INI: | |
1146 | if (!(dev->mdev.caps.flags & MLX5_DEV_CAP_FLAG_XRC)) { | |
1147 | mlx5_ib_dbg(dev, "XRC not supported\n"); | |
1148 | return ERR_PTR(-ENOSYS); | |
1149 | } | |
1150 | init_attr->recv_cq = NULL; | |
1151 | if (init_attr->qp_type == IB_QPT_XRC_TGT) { | |
1152 | xrcdn = to_mxrcd(init_attr->xrcd)->xrcdn; | |
1153 | init_attr->send_cq = NULL; | |
1154 | } | |
1155 | ||
1156 | /* fall through */ | |
1157 | case IB_QPT_RC: | |
1158 | case IB_QPT_UC: | |
1159 | case IB_QPT_UD: | |
1160 | case IB_QPT_SMI: | |
1161 | case IB_QPT_GSI: | |
1162 | case MLX5_IB_QPT_REG_UMR: | |
1163 | qp = kzalloc(sizeof(*qp), GFP_KERNEL); | |
1164 | if (!qp) | |
1165 | return ERR_PTR(-ENOMEM); | |
1166 | ||
1167 | err = create_qp_common(dev, pd, init_attr, udata, qp); | |
1168 | if (err) { | |
1169 | mlx5_ib_dbg(dev, "create_qp_common failed\n"); | |
1170 | kfree(qp); | |
1171 | return ERR_PTR(err); | |
1172 | } | |
1173 | ||
1174 | if (is_qp0(init_attr->qp_type)) | |
1175 | qp->ibqp.qp_num = 0; | |
1176 | else if (is_qp1(init_attr->qp_type)) | |
1177 | qp->ibqp.qp_num = 1; | |
1178 | else | |
1179 | qp->ibqp.qp_num = qp->mqp.qpn; | |
1180 | ||
1181 | mlx5_ib_dbg(dev, "ib qpnum 0x%x, mlx qpn 0x%x, rcqn 0x%x, scqn 0x%x\n", | |
1182 | qp->ibqp.qp_num, qp->mqp.qpn, to_mcq(init_attr->recv_cq)->mcq.cqn, | |
1183 | to_mcq(init_attr->send_cq)->mcq.cqn); | |
1184 | ||
1185 | qp->xrcdn = xrcdn; | |
1186 | ||
1187 | break; | |
1188 | ||
1189 | case IB_QPT_RAW_IPV6: | |
1190 | case IB_QPT_RAW_ETHERTYPE: | |
1191 | case IB_QPT_RAW_PACKET: | |
1192 | case IB_QPT_MAX: | |
1193 | default: | |
1194 | mlx5_ib_dbg(dev, "unsupported qp type %d\n", | |
1195 | init_attr->qp_type); | |
1196 | /* Don't support raw QPs */ | |
1197 | return ERR_PTR(-EINVAL); | |
1198 | } | |
1199 | ||
1200 | return &qp->ibqp; | |
1201 | } | |
1202 | ||
1203 | int mlx5_ib_destroy_qp(struct ib_qp *qp) | |
1204 | { | |
1205 | struct mlx5_ib_dev *dev = to_mdev(qp->device); | |
1206 | struct mlx5_ib_qp *mqp = to_mqp(qp); | |
1207 | ||
1208 | destroy_qp_common(dev, mqp); | |
1209 | ||
1210 | kfree(mqp); | |
1211 | ||
1212 | return 0; | |
1213 | } | |
1214 | ||
1215 | static __be32 to_mlx5_access_flags(struct mlx5_ib_qp *qp, const struct ib_qp_attr *attr, | |
1216 | int attr_mask) | |
1217 | { | |
1218 | u32 hw_access_flags = 0; | |
1219 | u8 dest_rd_atomic; | |
1220 | u32 access_flags; | |
1221 | ||
1222 | if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) | |
1223 | dest_rd_atomic = attr->max_dest_rd_atomic; | |
1224 | else | |
1225 | dest_rd_atomic = qp->resp_depth; | |
1226 | ||
1227 | if (attr_mask & IB_QP_ACCESS_FLAGS) | |
1228 | access_flags = attr->qp_access_flags; | |
1229 | else | |
1230 | access_flags = qp->atomic_rd_en; | |
1231 | ||
1232 | if (!dest_rd_atomic) | |
1233 | access_flags &= IB_ACCESS_REMOTE_WRITE; | |
1234 | ||
1235 | if (access_flags & IB_ACCESS_REMOTE_READ) | |
1236 | hw_access_flags |= MLX5_QP_BIT_RRE; | |
1237 | if (access_flags & IB_ACCESS_REMOTE_ATOMIC) | |
1238 | hw_access_flags |= (MLX5_QP_BIT_RAE | MLX5_ATOMIC_MODE_CX); | |
1239 | if (access_flags & IB_ACCESS_REMOTE_WRITE) | |
1240 | hw_access_flags |= MLX5_QP_BIT_RWE; | |
1241 | ||
1242 | return cpu_to_be32(hw_access_flags); | |
1243 | } | |
1244 | ||
1245 | enum { | |
1246 | MLX5_PATH_FLAG_FL = 1 << 0, | |
1247 | MLX5_PATH_FLAG_FREE_AR = 1 << 1, | |
1248 | MLX5_PATH_FLAG_COUNTER = 1 << 2, | |
1249 | }; | |
1250 | ||
1251 | static int ib_rate_to_mlx5(struct mlx5_ib_dev *dev, u8 rate) | |
1252 | { | |
1253 | if (rate == IB_RATE_PORT_CURRENT) { | |
1254 | return 0; | |
1255 | } else if (rate < IB_RATE_2_5_GBPS || rate > IB_RATE_300_GBPS) { | |
1256 | return -EINVAL; | |
1257 | } else { | |
1258 | while (rate != IB_RATE_2_5_GBPS && | |
1259 | !(1 << (rate + MLX5_STAT_RATE_OFFSET) & | |
1260 | dev->mdev.caps.stat_rate_support)) | |
1261 | --rate; | |
1262 | } | |
1263 | ||
1264 | return rate + MLX5_STAT_RATE_OFFSET; | |
1265 | } | |
1266 | ||
1267 | static int mlx5_set_path(struct mlx5_ib_dev *dev, const struct ib_ah_attr *ah, | |
1268 | struct mlx5_qp_path *path, u8 port, int attr_mask, | |
1269 | u32 path_flags, const struct ib_qp_attr *attr) | |
1270 | { | |
1271 | int err; | |
1272 | ||
1273 | path->fl = (path_flags & MLX5_PATH_FLAG_FL) ? 0x80 : 0; | |
1274 | path->free_ar = (path_flags & MLX5_PATH_FLAG_FREE_AR) ? 0x80 : 0; | |
1275 | ||
1276 | if (attr_mask & IB_QP_PKEY_INDEX) | |
1277 | path->pkey_index = attr->pkey_index; | |
1278 | ||
1279 | path->grh_mlid = ah->src_path_bits & 0x7f; | |
1280 | path->rlid = cpu_to_be16(ah->dlid); | |
1281 | ||
1282 | if (ah->ah_flags & IB_AH_GRH) { | |
1283 | path->grh_mlid |= 1 << 7; | |
1284 | path->mgid_index = ah->grh.sgid_index; | |
1285 | path->hop_limit = ah->grh.hop_limit; | |
1286 | path->tclass_flowlabel = | |
1287 | cpu_to_be32((ah->grh.traffic_class << 20) | | |
1288 | (ah->grh.flow_label)); | |
1289 | memcpy(path->rgid, ah->grh.dgid.raw, 16); | |
1290 | } | |
1291 | ||
1292 | err = ib_rate_to_mlx5(dev, ah->static_rate); | |
1293 | if (err < 0) | |
1294 | return err; | |
1295 | path->static_rate = err; | |
1296 | path->port = port; | |
1297 | ||
1298 | if (ah->ah_flags & IB_AH_GRH) { | |
1299 | if (ah->grh.sgid_index >= dev->mdev.caps.port[port - 1].gid_table_len) { | |
1300 | pr_err(KERN_ERR "sgid_index (%u) too large. max is %d\n", | |
1301 | ah->grh.sgid_index, dev->mdev.caps.port[port - 1].gid_table_len); | |
1302 | return -EINVAL; | |
1303 | } | |
1304 | ||
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); | |
1312 | } | |
1313 | ||
1314 | if (attr_mask & IB_QP_TIMEOUT) | |
1315 | path->ackto_lt = attr->timeout << 3; | |
1316 | ||
1317 | path->sl = ah->sl & 0xf; | |
1318 | ||
1319 | return 0; | |
1320 | } | |
1321 | ||
1322 | static enum mlx5_qp_optpar opt_mask[MLX5_QP_NUM_STATE][MLX5_QP_NUM_STATE][MLX5_QP_ST_MAX] = { | |
1323 | [MLX5_QP_STATE_INIT] = { | |
1324 | [MLX5_QP_STATE_INIT] = { | |
1325 | [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE | | |
1326 | MLX5_QP_OPTPAR_RAE | | |
1327 | MLX5_QP_OPTPAR_RWE | | |
1328 | MLX5_QP_OPTPAR_PKEY_INDEX | | |
1329 | MLX5_QP_OPTPAR_PRI_PORT, | |
1330 | [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE | | |
1331 | MLX5_QP_OPTPAR_PKEY_INDEX | | |
1332 | MLX5_QP_OPTPAR_PRI_PORT, | |
1333 | [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX | | |
1334 | MLX5_QP_OPTPAR_Q_KEY | | |
1335 | MLX5_QP_OPTPAR_PRI_PORT, | |
1336 | }, | |
1337 | [MLX5_QP_STATE_RTR] = { | |
1338 | [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH | | |
1339 | MLX5_QP_OPTPAR_RRE | | |
1340 | MLX5_QP_OPTPAR_RAE | | |
1341 | MLX5_QP_OPTPAR_RWE | | |
1342 | MLX5_QP_OPTPAR_PKEY_INDEX, | |
1343 | [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH | | |
1344 | MLX5_QP_OPTPAR_RWE | | |
1345 | MLX5_QP_OPTPAR_PKEY_INDEX, | |
1346 | [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_PKEY_INDEX | | |
1347 | MLX5_QP_OPTPAR_Q_KEY, | |
1348 | [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_PKEY_INDEX | | |
1349 | MLX5_QP_OPTPAR_Q_KEY, | |
a4774e90 EC |
1350 | [MLX5_QP_ST_XRC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH | |
1351 | MLX5_QP_OPTPAR_RRE | | |
1352 | MLX5_QP_OPTPAR_RAE | | |
1353 | MLX5_QP_OPTPAR_RWE | | |
1354 | MLX5_QP_OPTPAR_PKEY_INDEX, | |
e126ba97 EC |
1355 | }, |
1356 | }, | |
1357 | [MLX5_QP_STATE_RTR] = { | |
1358 | [MLX5_QP_STATE_RTS] = { | |
1359 | [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH | | |
1360 | MLX5_QP_OPTPAR_RRE | | |
1361 | MLX5_QP_OPTPAR_RAE | | |
1362 | MLX5_QP_OPTPAR_RWE | | |
1363 | MLX5_QP_OPTPAR_PM_STATE | | |
1364 | MLX5_QP_OPTPAR_RNR_TIMEOUT, | |
1365 | [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_ALT_ADDR_PATH | | |
1366 | MLX5_QP_OPTPAR_RWE | | |
1367 | MLX5_QP_OPTPAR_PM_STATE, | |
1368 | [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY, | |
1369 | }, | |
1370 | }, | |
1371 | [MLX5_QP_STATE_RTS] = { | |
1372 | [MLX5_QP_STATE_RTS] = { | |
1373 | [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RRE | | |
1374 | MLX5_QP_OPTPAR_RAE | | |
1375 | MLX5_QP_OPTPAR_RWE | | |
1376 | MLX5_QP_OPTPAR_RNR_TIMEOUT | | |
c2a3431e EC |
1377 | MLX5_QP_OPTPAR_PM_STATE | |
1378 | MLX5_QP_OPTPAR_ALT_ADDR_PATH, | |
e126ba97 | 1379 | [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE | |
c2a3431e EC |
1380 | MLX5_QP_OPTPAR_PM_STATE | |
1381 | MLX5_QP_OPTPAR_ALT_ADDR_PATH, | |
e126ba97 EC |
1382 | [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY | |
1383 | MLX5_QP_OPTPAR_SRQN | | |
1384 | MLX5_QP_OPTPAR_CQN_RCV, | |
1385 | }, | |
1386 | }, | |
1387 | [MLX5_QP_STATE_SQER] = { | |
1388 | [MLX5_QP_STATE_RTS] = { | |
1389 | [MLX5_QP_ST_UD] = MLX5_QP_OPTPAR_Q_KEY, | |
1390 | [MLX5_QP_ST_MLX] = MLX5_QP_OPTPAR_Q_KEY, | |
75959f56 | 1391 | [MLX5_QP_ST_UC] = MLX5_QP_OPTPAR_RWE, |
a4774e90 EC |
1392 | [MLX5_QP_ST_RC] = MLX5_QP_OPTPAR_RNR_TIMEOUT | |
1393 | MLX5_QP_OPTPAR_RWE | | |
1394 | MLX5_QP_OPTPAR_RAE | | |
1395 | MLX5_QP_OPTPAR_RRE, | |
e126ba97 EC |
1396 | }, |
1397 | }, | |
1398 | }; | |
1399 | ||
1400 | static int ib_nr_to_mlx5_nr(int ib_mask) | |
1401 | { | |
1402 | switch (ib_mask) { | |
1403 | case IB_QP_STATE: | |
1404 | return 0; | |
1405 | case IB_QP_CUR_STATE: | |
1406 | return 0; | |
1407 | case IB_QP_EN_SQD_ASYNC_NOTIFY: | |
1408 | return 0; | |
1409 | case IB_QP_ACCESS_FLAGS: | |
1410 | return MLX5_QP_OPTPAR_RWE | MLX5_QP_OPTPAR_RRE | | |
1411 | MLX5_QP_OPTPAR_RAE; | |
1412 | case IB_QP_PKEY_INDEX: | |
1413 | return MLX5_QP_OPTPAR_PKEY_INDEX; | |
1414 | case IB_QP_PORT: | |
1415 | return MLX5_QP_OPTPAR_PRI_PORT; | |
1416 | case IB_QP_QKEY: | |
1417 | return MLX5_QP_OPTPAR_Q_KEY; | |
1418 | case IB_QP_AV: | |
1419 | return MLX5_QP_OPTPAR_PRIMARY_ADDR_PATH | | |
1420 | MLX5_QP_OPTPAR_PRI_PORT; | |
1421 | case IB_QP_PATH_MTU: | |
1422 | return 0; | |
1423 | case IB_QP_TIMEOUT: | |
1424 | return MLX5_QP_OPTPAR_ACK_TIMEOUT; | |
1425 | case IB_QP_RETRY_CNT: | |
1426 | return MLX5_QP_OPTPAR_RETRY_COUNT; | |
1427 | case IB_QP_RNR_RETRY: | |
1428 | return MLX5_QP_OPTPAR_RNR_RETRY; | |
1429 | case IB_QP_RQ_PSN: | |
1430 | return 0; | |
1431 | case IB_QP_MAX_QP_RD_ATOMIC: | |
1432 | return MLX5_QP_OPTPAR_SRA_MAX; | |
1433 | case IB_QP_ALT_PATH: | |
1434 | return MLX5_QP_OPTPAR_ALT_ADDR_PATH; | |
1435 | case IB_QP_MIN_RNR_TIMER: | |
1436 | return MLX5_QP_OPTPAR_RNR_TIMEOUT; | |
1437 | case IB_QP_SQ_PSN: | |
1438 | return 0; | |
1439 | case IB_QP_MAX_DEST_RD_ATOMIC: | |
1440 | return MLX5_QP_OPTPAR_RRA_MAX | MLX5_QP_OPTPAR_RWE | | |
1441 | MLX5_QP_OPTPAR_RRE | MLX5_QP_OPTPAR_RAE; | |
1442 | case IB_QP_PATH_MIG_STATE: | |
1443 | return MLX5_QP_OPTPAR_PM_STATE; | |
1444 | case IB_QP_CAP: | |
1445 | return 0; | |
1446 | case IB_QP_DEST_QPN: | |
1447 | return 0; | |
1448 | } | |
1449 | return 0; | |
1450 | } | |
1451 | ||
1452 | static int ib_mask_to_mlx5_opt(int ib_mask) | |
1453 | { | |
1454 | int result = 0; | |
1455 | int i; | |
1456 | ||
1457 | for (i = 0; i < 8 * sizeof(int); i++) { | |
1458 | if ((1 << i) & ib_mask) | |
1459 | result |= ib_nr_to_mlx5_nr(1 << i); | |
1460 | } | |
1461 | ||
1462 | return result; | |
1463 | } | |
1464 | ||
1465 | static int __mlx5_ib_modify_qp(struct ib_qp *ibqp, | |
1466 | const struct ib_qp_attr *attr, int attr_mask, | |
1467 | enum ib_qp_state cur_state, enum ib_qp_state new_state) | |
1468 | { | |
1469 | struct mlx5_ib_dev *dev = to_mdev(ibqp->device); | |
1470 | struct mlx5_ib_qp *qp = to_mqp(ibqp); | |
1471 | struct mlx5_ib_cq *send_cq, *recv_cq; | |
1472 | struct mlx5_qp_context *context; | |
1473 | struct mlx5_modify_qp_mbox_in *in; | |
1474 | struct mlx5_ib_pd *pd; | |
1475 | enum mlx5_qp_state mlx5_cur, mlx5_new; | |
1476 | enum mlx5_qp_optpar optpar; | |
1477 | int sqd_event; | |
1478 | int mlx5_st; | |
1479 | int err; | |
1480 | ||
1481 | in = kzalloc(sizeof(*in), GFP_KERNEL); | |
1482 | if (!in) | |
1483 | return -ENOMEM; | |
1484 | ||
1485 | context = &in->ctx; | |
1486 | err = to_mlx5_st(ibqp->qp_type); | |
1487 | if (err < 0) | |
1488 | goto out; | |
1489 | ||
1490 | context->flags = cpu_to_be32(err << 16); | |
1491 | ||
1492 | if (!(attr_mask & IB_QP_PATH_MIG_STATE)) { | |
1493 | context->flags |= cpu_to_be32(MLX5_QP_PM_MIGRATED << 11); | |
1494 | } else { | |
1495 | switch (attr->path_mig_state) { | |
1496 | case IB_MIG_MIGRATED: | |
1497 | context->flags |= cpu_to_be32(MLX5_QP_PM_MIGRATED << 11); | |
1498 | break; | |
1499 | case IB_MIG_REARM: | |
1500 | context->flags |= cpu_to_be32(MLX5_QP_PM_REARM << 11); | |
1501 | break; | |
1502 | case IB_MIG_ARMED: | |
1503 | context->flags |= cpu_to_be32(MLX5_QP_PM_ARMED << 11); | |
1504 | break; | |
1505 | } | |
1506 | } | |
1507 | ||
1508 | if (ibqp->qp_type == IB_QPT_GSI || ibqp->qp_type == IB_QPT_SMI) { | |
1509 | context->mtu_msgmax = (IB_MTU_256 << 5) | 8; | |
1510 | } else if (ibqp->qp_type == IB_QPT_UD || | |
1511 | ibqp->qp_type == MLX5_IB_QPT_REG_UMR) { | |
1512 | context->mtu_msgmax = (IB_MTU_4096 << 5) | 12; | |
1513 | } else if (attr_mask & IB_QP_PATH_MTU) { | |
1514 | if (attr->path_mtu < IB_MTU_256 || | |
1515 | attr->path_mtu > IB_MTU_4096) { | |
1516 | mlx5_ib_warn(dev, "invalid mtu %d\n", attr->path_mtu); | |
1517 | err = -EINVAL; | |
1518 | goto out; | |
1519 | } | |
1520 | context->mtu_msgmax = (attr->path_mtu << 5) | dev->mdev.caps.log_max_msg; | |
1521 | } | |
1522 | ||
1523 | if (attr_mask & IB_QP_DEST_QPN) | |
1524 | context->log_pg_sz_remote_qpn = cpu_to_be32(attr->dest_qp_num); | |
1525 | ||
1526 | if (attr_mask & IB_QP_PKEY_INDEX) | |
1527 | context->pri_path.pkey_index = attr->pkey_index; | |
1528 | ||
1529 | /* todo implement counter_index functionality */ | |
1530 | ||
1531 | if (is_sqp(ibqp->qp_type)) | |
1532 | context->pri_path.port = qp->port; | |
1533 | ||
1534 | if (attr_mask & IB_QP_PORT) | |
1535 | context->pri_path.port = attr->port_num; | |
1536 | ||
1537 | if (attr_mask & IB_QP_AV) { | |
1538 | err = mlx5_set_path(dev, &attr->ah_attr, &context->pri_path, | |
1539 | attr_mask & IB_QP_PORT ? attr->port_num : qp->port, | |
1540 | attr_mask, 0, attr); | |
1541 | if (err) | |
1542 | goto out; | |
1543 | } | |
1544 | ||
1545 | if (attr_mask & IB_QP_TIMEOUT) | |
1546 | context->pri_path.ackto_lt |= attr->timeout << 3; | |
1547 | ||
1548 | if (attr_mask & IB_QP_ALT_PATH) { | |
1549 | err = mlx5_set_path(dev, &attr->alt_ah_attr, &context->alt_path, | |
1550 | attr->alt_port_num, attr_mask, 0, attr); | |
1551 | if (err) | |
1552 | goto out; | |
1553 | } | |
1554 | ||
1555 | pd = get_pd(qp); | |
1556 | get_cqs(qp, &send_cq, &recv_cq); | |
1557 | ||
1558 | context->flags_pd = cpu_to_be32(pd ? pd->pdn : to_mpd(dev->devr.p0)->pdn); | |
1559 | context->cqn_send = send_cq ? cpu_to_be32(send_cq->mcq.cqn) : 0; | |
1560 | context->cqn_recv = recv_cq ? cpu_to_be32(recv_cq->mcq.cqn) : 0; | |
1561 | context->params1 = cpu_to_be32(MLX5_IB_ACK_REQ_FREQ << 28); | |
1562 | ||
1563 | if (attr_mask & IB_QP_RNR_RETRY) | |
1564 | context->params1 |= cpu_to_be32(attr->rnr_retry << 13); | |
1565 | ||
1566 | if (attr_mask & IB_QP_RETRY_CNT) | |
1567 | context->params1 |= cpu_to_be32(attr->retry_cnt << 16); | |
1568 | ||
1569 | if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) { | |
1570 | if (attr->max_rd_atomic) | |
1571 | context->params1 |= | |
1572 | cpu_to_be32(fls(attr->max_rd_atomic - 1) << 21); | |
1573 | } | |
1574 | ||
1575 | if (attr_mask & IB_QP_SQ_PSN) | |
1576 | context->next_send_psn = cpu_to_be32(attr->sq_psn); | |
1577 | ||
1578 | if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) { | |
1579 | if (attr->max_dest_rd_atomic) | |
1580 | context->params2 |= | |
1581 | cpu_to_be32(fls(attr->max_dest_rd_atomic - 1) << 21); | |
1582 | } | |
1583 | ||
1584 | if (attr_mask & (IB_QP_ACCESS_FLAGS | IB_QP_MAX_DEST_RD_ATOMIC)) | |
1585 | context->params2 |= to_mlx5_access_flags(qp, attr, attr_mask); | |
1586 | ||
1587 | if (attr_mask & IB_QP_MIN_RNR_TIMER) | |
1588 | context->rnr_nextrecvpsn |= cpu_to_be32(attr->min_rnr_timer << 24); | |
1589 | ||
1590 | if (attr_mask & IB_QP_RQ_PSN) | |
1591 | context->rnr_nextrecvpsn |= cpu_to_be32(attr->rq_psn); | |
1592 | ||
1593 | if (attr_mask & IB_QP_QKEY) | |
1594 | context->qkey = cpu_to_be32(attr->qkey); | |
1595 | ||
1596 | if (qp->rq.wqe_cnt && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) | |
1597 | context->db_rec_addr = cpu_to_be64(qp->db.dma); | |
1598 | ||
1599 | if (cur_state == IB_QPS_RTS && new_state == IB_QPS_SQD && | |
1600 | attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY && attr->en_sqd_async_notify) | |
1601 | sqd_event = 1; | |
1602 | else | |
1603 | sqd_event = 0; | |
1604 | ||
1605 | if (!ibqp->uobject && cur_state == IB_QPS_RESET && new_state == IB_QPS_INIT) | |
1606 | context->sq_crq_size |= cpu_to_be16(1 << 4); | |
1607 | ||
1608 | ||
1609 | mlx5_cur = to_mlx5_state(cur_state); | |
1610 | mlx5_new = to_mlx5_state(new_state); | |
1611 | mlx5_st = to_mlx5_st(ibqp->qp_type); | |
07c9113f | 1612 | if (mlx5_st < 0) |
e126ba97 EC |
1613 | goto out; |
1614 | ||
1615 | optpar = ib_mask_to_mlx5_opt(attr_mask); | |
1616 | optpar &= opt_mask[mlx5_cur][mlx5_new][mlx5_st]; | |
1617 | in->optparam = cpu_to_be32(optpar); | |
1618 | err = mlx5_core_qp_modify(&dev->mdev, to_mlx5_state(cur_state), | |
1619 | to_mlx5_state(new_state), in, sqd_event, | |
1620 | &qp->mqp); | |
1621 | if (err) | |
1622 | goto out; | |
1623 | ||
1624 | qp->state = new_state; | |
1625 | ||
1626 | if (attr_mask & IB_QP_ACCESS_FLAGS) | |
1627 | qp->atomic_rd_en = attr->qp_access_flags; | |
1628 | if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) | |
1629 | qp->resp_depth = attr->max_dest_rd_atomic; | |
1630 | if (attr_mask & IB_QP_PORT) | |
1631 | qp->port = attr->port_num; | |
1632 | if (attr_mask & IB_QP_ALT_PATH) | |
1633 | qp->alt_port = attr->alt_port_num; | |
1634 | ||
1635 | /* | |
1636 | * If we moved a kernel QP to RESET, clean up all old CQ | |
1637 | * entries and reinitialize the QP. | |
1638 | */ | |
1639 | if (new_state == IB_QPS_RESET && !ibqp->uobject) { | |
1640 | mlx5_ib_cq_clean(recv_cq, qp->mqp.qpn, | |
1641 | ibqp->srq ? to_msrq(ibqp->srq) : NULL); | |
1642 | if (send_cq != recv_cq) | |
1643 | mlx5_ib_cq_clean(send_cq, qp->mqp.qpn, NULL); | |
1644 | ||
1645 | qp->rq.head = 0; | |
1646 | qp->rq.tail = 0; | |
1647 | qp->sq.head = 0; | |
1648 | qp->sq.tail = 0; | |
1649 | qp->sq.cur_post = 0; | |
1650 | qp->sq.last_poll = 0; | |
1651 | qp->db.db[MLX5_RCV_DBR] = 0; | |
1652 | qp->db.db[MLX5_SND_DBR] = 0; | |
1653 | } | |
1654 | ||
1655 | out: | |
1656 | kfree(in); | |
1657 | return err; | |
1658 | } | |
1659 | ||
1660 | int mlx5_ib_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, | |
1661 | int attr_mask, struct ib_udata *udata) | |
1662 | { | |
1663 | struct mlx5_ib_dev *dev = to_mdev(ibqp->device); | |
1664 | struct mlx5_ib_qp *qp = to_mqp(ibqp); | |
1665 | enum ib_qp_state cur_state, new_state; | |
1666 | int err = -EINVAL; | |
1667 | int port; | |
1668 | ||
1669 | mutex_lock(&qp->mutex); | |
1670 | ||
1671 | cur_state = attr_mask & IB_QP_CUR_STATE ? attr->cur_qp_state : qp->state; | |
1672 | new_state = attr_mask & IB_QP_STATE ? attr->qp_state : cur_state; | |
1673 | ||
1674 | if (ibqp->qp_type != MLX5_IB_QPT_REG_UMR && | |
dd5f03be MB |
1675 | !ib_modify_qp_is_ok(cur_state, new_state, ibqp->qp_type, attr_mask, |
1676 | IB_LINK_LAYER_UNSPECIFIED)) | |
e126ba97 EC |
1677 | goto out; |
1678 | ||
1679 | if ((attr_mask & IB_QP_PORT) && | |
1680 | (attr->port_num == 0 || attr->port_num > dev->mdev.caps.num_ports)) | |
1681 | goto out; | |
1682 | ||
1683 | if (attr_mask & IB_QP_PKEY_INDEX) { | |
1684 | port = attr_mask & IB_QP_PORT ? attr->port_num : qp->port; | |
1685 | if (attr->pkey_index >= dev->mdev.caps.port[port - 1].pkey_table_len) | |
1686 | goto out; | |
1687 | } | |
1688 | ||
1689 | if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC && | |
1690 | attr->max_rd_atomic > dev->mdev.caps.max_ra_res_qp) | |
1691 | goto out; | |
1692 | ||
1693 | if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC && | |
1694 | attr->max_dest_rd_atomic > dev->mdev.caps.max_ra_req_qp) | |
1695 | goto out; | |
1696 | ||
1697 | if (cur_state == new_state && cur_state == IB_QPS_RESET) { | |
1698 | err = 0; | |
1699 | goto out; | |
1700 | } | |
1701 | ||
1702 | err = __mlx5_ib_modify_qp(ibqp, attr, attr_mask, cur_state, new_state); | |
1703 | ||
1704 | out: | |
1705 | mutex_unlock(&qp->mutex); | |
1706 | return err; | |
1707 | } | |
1708 | ||
1709 | static int mlx5_wq_overflow(struct mlx5_ib_wq *wq, int nreq, struct ib_cq *ib_cq) | |
1710 | { | |
1711 | struct mlx5_ib_cq *cq; | |
1712 | unsigned cur; | |
1713 | ||
1714 | cur = wq->head - wq->tail; | |
1715 | if (likely(cur + nreq < wq->max_post)) | |
1716 | return 0; | |
1717 | ||
1718 | cq = to_mcq(ib_cq); | |
1719 | spin_lock(&cq->lock); | |
1720 | cur = wq->head - wq->tail; | |
1721 | spin_unlock(&cq->lock); | |
1722 | ||
1723 | return cur + nreq >= wq->max_post; | |
1724 | } | |
1725 | ||
1726 | static __always_inline void set_raddr_seg(struct mlx5_wqe_raddr_seg *rseg, | |
1727 | u64 remote_addr, u32 rkey) | |
1728 | { | |
1729 | rseg->raddr = cpu_to_be64(remote_addr); | |
1730 | rseg->rkey = cpu_to_be32(rkey); | |
1731 | rseg->reserved = 0; | |
1732 | } | |
1733 | ||
e126ba97 EC |
1734 | static void set_datagram_seg(struct mlx5_wqe_datagram_seg *dseg, |
1735 | struct ib_send_wr *wr) | |
1736 | { | |
1737 | memcpy(&dseg->av, &to_mah(wr->wr.ud.ah)->av, sizeof(struct mlx5_av)); | |
1738 | dseg->av.dqp_dct = cpu_to_be32(wr->wr.ud.remote_qpn | MLX5_EXTENDED_UD_AV); | |
1739 | dseg->av.key.qkey.qkey = cpu_to_be32(wr->wr.ud.remote_qkey); | |
1740 | } | |
1741 | ||
1742 | static void set_data_ptr_seg(struct mlx5_wqe_data_seg *dseg, struct ib_sge *sg) | |
1743 | { | |
1744 | dseg->byte_count = cpu_to_be32(sg->length); | |
1745 | dseg->lkey = cpu_to_be32(sg->lkey); | |
1746 | dseg->addr = cpu_to_be64(sg->addr); | |
1747 | } | |
1748 | ||
1749 | static __be16 get_klm_octo(int npages) | |
1750 | { | |
1751 | return cpu_to_be16(ALIGN(npages, 8) / 2); | |
1752 | } | |
1753 | ||
1754 | static __be64 frwr_mkey_mask(void) | |
1755 | { | |
1756 | u64 result; | |
1757 | ||
1758 | result = MLX5_MKEY_MASK_LEN | | |
1759 | MLX5_MKEY_MASK_PAGE_SIZE | | |
1760 | MLX5_MKEY_MASK_START_ADDR | | |
1761 | MLX5_MKEY_MASK_EN_RINVAL | | |
1762 | MLX5_MKEY_MASK_KEY | | |
1763 | MLX5_MKEY_MASK_LR | | |
1764 | MLX5_MKEY_MASK_LW | | |
1765 | MLX5_MKEY_MASK_RR | | |
1766 | MLX5_MKEY_MASK_RW | | |
1767 | MLX5_MKEY_MASK_A | | |
1768 | MLX5_MKEY_MASK_SMALL_FENCE | | |
1769 | MLX5_MKEY_MASK_FREE; | |
1770 | ||
1771 | return cpu_to_be64(result); | |
1772 | } | |
1773 | ||
1774 | static void set_frwr_umr_segment(struct mlx5_wqe_umr_ctrl_seg *umr, | |
1775 | struct ib_send_wr *wr, int li) | |
1776 | { | |
1777 | memset(umr, 0, sizeof(*umr)); | |
1778 | ||
1779 | if (li) { | |
1780 | umr->mkey_mask = cpu_to_be64(MLX5_MKEY_MASK_FREE); | |
1781 | umr->flags = 1 << 7; | |
1782 | return; | |
1783 | } | |
1784 | ||
1785 | umr->flags = (1 << 5); /* fail if not free */ | |
1786 | umr->klm_octowords = get_klm_octo(wr->wr.fast_reg.page_list_len); | |
1787 | umr->mkey_mask = frwr_mkey_mask(); | |
1788 | } | |
1789 | ||
1790 | static void set_reg_umr_segment(struct mlx5_wqe_umr_ctrl_seg *umr, | |
1791 | struct ib_send_wr *wr) | |
1792 | { | |
1793 | struct umr_wr *umrwr = (struct umr_wr *)&wr->wr.fast_reg; | |
1794 | u64 mask; | |
1795 | ||
1796 | memset(umr, 0, sizeof(*umr)); | |
1797 | ||
1798 | if (!(wr->send_flags & MLX5_IB_SEND_UMR_UNREG)) { | |
1799 | umr->flags = 1 << 5; /* fail if not free */ | |
1800 | umr->klm_octowords = get_klm_octo(umrwr->npages); | |
1801 | mask = MLX5_MKEY_MASK_LEN | | |
1802 | MLX5_MKEY_MASK_PAGE_SIZE | | |
1803 | MLX5_MKEY_MASK_START_ADDR | | |
1804 | MLX5_MKEY_MASK_PD | | |
1805 | MLX5_MKEY_MASK_LR | | |
1806 | MLX5_MKEY_MASK_LW | | |
746b5583 | 1807 | MLX5_MKEY_MASK_KEY | |
e126ba97 EC |
1808 | MLX5_MKEY_MASK_RR | |
1809 | MLX5_MKEY_MASK_RW | | |
1810 | MLX5_MKEY_MASK_A | | |
1811 | MLX5_MKEY_MASK_FREE; | |
1812 | umr->mkey_mask = cpu_to_be64(mask); | |
1813 | } else { | |
1814 | umr->flags = 2 << 5; /* fail if free */ | |
1815 | mask = MLX5_MKEY_MASK_FREE; | |
1816 | umr->mkey_mask = cpu_to_be64(mask); | |
1817 | } | |
1818 | ||
1819 | if (!wr->num_sge) | |
1820 | umr->flags |= (1 << 7); /* inline */ | |
1821 | } | |
1822 | ||
1823 | static u8 get_umr_flags(int acc) | |
1824 | { | |
1825 | return (acc & IB_ACCESS_REMOTE_ATOMIC ? MLX5_PERM_ATOMIC : 0) | | |
1826 | (acc & IB_ACCESS_REMOTE_WRITE ? MLX5_PERM_REMOTE_WRITE : 0) | | |
1827 | (acc & IB_ACCESS_REMOTE_READ ? MLX5_PERM_REMOTE_READ : 0) | | |
1828 | (acc & IB_ACCESS_LOCAL_WRITE ? MLX5_PERM_LOCAL_WRITE : 0) | | |
1829 | MLX5_PERM_LOCAL_READ | MLX5_PERM_UMR_EN | MLX5_ACCESS_MODE_MTT; | |
1830 | } | |
1831 | ||
1832 | static void set_mkey_segment(struct mlx5_mkey_seg *seg, struct ib_send_wr *wr, | |
1833 | int li, int *writ) | |
1834 | { | |
1835 | memset(seg, 0, sizeof(*seg)); | |
1836 | if (li) { | |
1837 | seg->status = 1 << 6; | |
1838 | return; | |
1839 | } | |
1840 | ||
1841 | seg->flags = get_umr_flags(wr->wr.fast_reg.access_flags); | |
1842 | *writ = seg->flags & (MLX5_PERM_LOCAL_WRITE | IB_ACCESS_REMOTE_WRITE); | |
1843 | seg->qpn_mkey7_0 = cpu_to_be32((wr->wr.fast_reg.rkey & 0xff) | 0xffffff00); | |
1844 | seg->flags_pd = cpu_to_be32(MLX5_MKEY_REMOTE_INVAL); | |
1845 | seg->start_addr = cpu_to_be64(wr->wr.fast_reg.iova_start); | |
1846 | seg->len = cpu_to_be64(wr->wr.fast_reg.length); | |
1847 | seg->xlt_oct_size = cpu_to_be32((wr->wr.fast_reg.page_list_len + 1) / 2); | |
1848 | seg->log2_page_size = wr->wr.fast_reg.page_shift; | |
1849 | } | |
1850 | ||
1851 | static void set_reg_mkey_segment(struct mlx5_mkey_seg *seg, struct ib_send_wr *wr) | |
1852 | { | |
1853 | memset(seg, 0, sizeof(*seg)); | |
1854 | if (wr->send_flags & MLX5_IB_SEND_UMR_UNREG) { | |
1855 | seg->status = 1 << 6; | |
1856 | return; | |
1857 | } | |
1858 | ||
1859 | seg->flags = convert_access(wr->wr.fast_reg.access_flags); | |
1860 | seg->flags_pd = cpu_to_be32(to_mpd((struct ib_pd *)wr->wr.fast_reg.page_list)->pdn); | |
1861 | seg->start_addr = cpu_to_be64(wr->wr.fast_reg.iova_start); | |
1862 | seg->len = cpu_to_be64(wr->wr.fast_reg.length); | |
1863 | seg->log2_page_size = wr->wr.fast_reg.page_shift; | |
746b5583 EC |
1864 | seg->qpn_mkey7_0 = cpu_to_be32(0xffffff00 | |
1865 | mlx5_mkey_variant(wr->wr.fast_reg.rkey)); | |
e126ba97 EC |
1866 | } |
1867 | ||
1868 | static void set_frwr_pages(struct mlx5_wqe_data_seg *dseg, | |
1869 | struct ib_send_wr *wr, | |
1870 | struct mlx5_core_dev *mdev, | |
1871 | struct mlx5_ib_pd *pd, | |
1872 | int writ) | |
1873 | { | |
1874 | struct mlx5_ib_fast_reg_page_list *mfrpl = to_mfrpl(wr->wr.fast_reg.page_list); | |
1875 | u64 *page_list = wr->wr.fast_reg.page_list->page_list; | |
1876 | u64 perm = MLX5_EN_RD | (writ ? MLX5_EN_WR : 0); | |
1877 | int i; | |
1878 | ||
1879 | for (i = 0; i < wr->wr.fast_reg.page_list_len; i++) | |
1880 | mfrpl->mapped_page_list[i] = cpu_to_be64(page_list[i] | perm); | |
1881 | dseg->addr = cpu_to_be64(mfrpl->map); | |
1882 | dseg->byte_count = cpu_to_be32(ALIGN(sizeof(u64) * wr->wr.fast_reg.page_list_len, 64)); | |
1883 | dseg->lkey = cpu_to_be32(pd->pa_lkey); | |
1884 | } | |
1885 | ||
1886 | static __be32 send_ieth(struct ib_send_wr *wr) | |
1887 | { | |
1888 | switch (wr->opcode) { | |
1889 | case IB_WR_SEND_WITH_IMM: | |
1890 | case IB_WR_RDMA_WRITE_WITH_IMM: | |
1891 | return wr->ex.imm_data; | |
1892 | ||
1893 | case IB_WR_SEND_WITH_INV: | |
1894 | return cpu_to_be32(wr->ex.invalidate_rkey); | |
1895 | ||
1896 | default: | |
1897 | return 0; | |
1898 | } | |
1899 | } | |
1900 | ||
1901 | static u8 calc_sig(void *wqe, int size) | |
1902 | { | |
1903 | u8 *p = wqe; | |
1904 | u8 res = 0; | |
1905 | int i; | |
1906 | ||
1907 | for (i = 0; i < size; i++) | |
1908 | res ^= p[i]; | |
1909 | ||
1910 | return ~res; | |
1911 | } | |
1912 | ||
1913 | static u8 wq_sig(void *wqe) | |
1914 | { | |
1915 | return calc_sig(wqe, (*((u8 *)wqe + 8) & 0x3f) << 4); | |
1916 | } | |
1917 | ||
1918 | static int set_data_inl_seg(struct mlx5_ib_qp *qp, struct ib_send_wr *wr, | |
1919 | void *wqe, int *sz) | |
1920 | { | |
1921 | struct mlx5_wqe_inline_seg *seg; | |
1922 | void *qend = qp->sq.qend; | |
1923 | void *addr; | |
1924 | int inl = 0; | |
1925 | int copy; | |
1926 | int len; | |
1927 | int i; | |
1928 | ||
1929 | seg = wqe; | |
1930 | wqe += sizeof(*seg); | |
1931 | for (i = 0; i < wr->num_sge; i++) { | |
1932 | addr = (void *)(unsigned long)(wr->sg_list[i].addr); | |
1933 | len = wr->sg_list[i].length; | |
1934 | inl += len; | |
1935 | ||
1936 | if (unlikely(inl > qp->max_inline_data)) | |
1937 | return -ENOMEM; | |
1938 | ||
1939 | if (unlikely(wqe + len > qend)) { | |
1940 | copy = qend - wqe; | |
1941 | memcpy(wqe, addr, copy); | |
1942 | addr += copy; | |
1943 | len -= copy; | |
1944 | wqe = mlx5_get_send_wqe(qp, 0); | |
1945 | } | |
1946 | memcpy(wqe, addr, len); | |
1947 | wqe += len; | |
1948 | } | |
1949 | ||
1950 | seg->byte_count = cpu_to_be32(inl | MLX5_INLINE_SEG); | |
1951 | ||
1952 | *sz = ALIGN(inl + sizeof(seg->byte_count), 16) / 16; | |
1953 | ||
1954 | return 0; | |
1955 | } | |
1956 | ||
1957 | static int set_frwr_li_wr(void **seg, struct ib_send_wr *wr, int *size, | |
1958 | struct mlx5_core_dev *mdev, struct mlx5_ib_pd *pd, struct mlx5_ib_qp *qp) | |
1959 | { | |
1960 | int writ = 0; | |
1961 | int li; | |
1962 | ||
1963 | li = wr->opcode == IB_WR_LOCAL_INV ? 1 : 0; | |
1964 | if (unlikely(wr->send_flags & IB_SEND_INLINE)) | |
1965 | return -EINVAL; | |
1966 | ||
1967 | set_frwr_umr_segment(*seg, wr, li); | |
1968 | *seg += sizeof(struct mlx5_wqe_umr_ctrl_seg); | |
1969 | *size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16; | |
1970 | if (unlikely((*seg == qp->sq.qend))) | |
1971 | *seg = mlx5_get_send_wqe(qp, 0); | |
1972 | set_mkey_segment(*seg, wr, li, &writ); | |
1973 | *seg += sizeof(struct mlx5_mkey_seg); | |
1974 | *size += sizeof(struct mlx5_mkey_seg) / 16; | |
1975 | if (unlikely((*seg == qp->sq.qend))) | |
1976 | *seg = mlx5_get_send_wqe(qp, 0); | |
1977 | if (!li) { | |
9641b74e EC |
1978 | if (unlikely(wr->wr.fast_reg.page_list_len > |
1979 | wr->wr.fast_reg.page_list->max_page_list_len)) | |
1980 | return -ENOMEM; | |
1981 | ||
e126ba97 EC |
1982 | set_frwr_pages(*seg, wr, mdev, pd, writ); |
1983 | *seg += sizeof(struct mlx5_wqe_data_seg); | |
1984 | *size += (sizeof(struct mlx5_wqe_data_seg) / 16); | |
1985 | } | |
1986 | return 0; | |
1987 | } | |
1988 | ||
1989 | static void dump_wqe(struct mlx5_ib_qp *qp, int idx, int size_16) | |
1990 | { | |
1991 | __be32 *p = NULL; | |
1992 | int tidx = idx; | |
1993 | int i, j; | |
1994 | ||
1995 | pr_debug("dump wqe at %p\n", mlx5_get_send_wqe(qp, tidx)); | |
1996 | for (i = 0, j = 0; i < size_16 * 4; i += 4, j += 4) { | |
1997 | if ((i & 0xf) == 0) { | |
1998 | void *buf = mlx5_get_send_wqe(qp, tidx); | |
1999 | tidx = (tidx + 1) & (qp->sq.wqe_cnt - 1); | |
2000 | p = buf; | |
2001 | j = 0; | |
2002 | } | |
2003 | pr_debug("%08x %08x %08x %08x\n", be32_to_cpu(p[j]), | |
2004 | be32_to_cpu(p[j + 1]), be32_to_cpu(p[j + 2]), | |
2005 | be32_to_cpu(p[j + 3])); | |
2006 | } | |
2007 | } | |
2008 | ||
2009 | static void mlx5_bf_copy(u64 __iomem *dst, u64 *src, | |
2010 | unsigned bytecnt, struct mlx5_ib_qp *qp) | |
2011 | { | |
2012 | while (bytecnt > 0) { | |
2013 | __iowrite64_copy(dst++, src++, 8); | |
2014 | __iowrite64_copy(dst++, src++, 8); | |
2015 | __iowrite64_copy(dst++, src++, 8); | |
2016 | __iowrite64_copy(dst++, src++, 8); | |
2017 | __iowrite64_copy(dst++, src++, 8); | |
2018 | __iowrite64_copy(dst++, src++, 8); | |
2019 | __iowrite64_copy(dst++, src++, 8); | |
2020 | __iowrite64_copy(dst++, src++, 8); | |
2021 | bytecnt -= 64; | |
2022 | if (unlikely(src == qp->sq.qend)) | |
2023 | src = mlx5_get_send_wqe(qp, 0); | |
2024 | } | |
2025 | } | |
2026 | ||
2027 | static u8 get_fence(u8 fence, struct ib_send_wr *wr) | |
2028 | { | |
2029 | if (unlikely(wr->opcode == IB_WR_LOCAL_INV && | |
2030 | wr->send_flags & IB_SEND_FENCE)) | |
2031 | return MLX5_FENCE_MODE_STRONG_ORDERING; | |
2032 | ||
2033 | if (unlikely(fence)) { | |
2034 | if (wr->send_flags & IB_SEND_FENCE) | |
2035 | return MLX5_FENCE_MODE_SMALL_AND_FENCE; | |
2036 | else | |
2037 | return fence; | |
2038 | ||
2039 | } else { | |
2040 | return 0; | |
2041 | } | |
2042 | } | |
2043 | ||
2044 | int mlx5_ib_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, | |
2045 | struct ib_send_wr **bad_wr) | |
2046 | { | |
2047 | struct mlx5_wqe_ctrl_seg *ctrl = NULL; /* compiler warning */ | |
2048 | struct mlx5_ib_dev *dev = to_mdev(ibqp->device); | |
2049 | struct mlx5_core_dev *mdev = &dev->mdev; | |
2050 | struct mlx5_ib_qp *qp = to_mqp(ibqp); | |
2051 | struct mlx5_wqe_data_seg *dpseg; | |
2052 | struct mlx5_wqe_xrc_seg *xrc; | |
2053 | struct mlx5_bf *bf = qp->bf; | |
2054 | int uninitialized_var(size); | |
2055 | void *qend = qp->sq.qend; | |
2056 | unsigned long flags; | |
2057 | u32 mlx5_opcode; | |
2058 | unsigned idx; | |
2059 | int err = 0; | |
2060 | int inl = 0; | |
2061 | int num_sge; | |
2062 | void *seg; | |
2063 | int nreq; | |
2064 | int i; | |
2065 | u8 next_fence = 0; | |
2066 | u8 opmod = 0; | |
2067 | u8 fence; | |
2068 | ||
2069 | spin_lock_irqsave(&qp->sq.lock, flags); | |
2070 | ||
2071 | for (nreq = 0; wr; nreq++, wr = wr->next) { | |
2072 | if (unlikely(wr->opcode >= sizeof(mlx5_ib_opcode) / sizeof(mlx5_ib_opcode[0]))) { | |
2073 | mlx5_ib_warn(dev, "\n"); | |
2074 | err = -EINVAL; | |
2075 | *bad_wr = wr; | |
2076 | goto out; | |
2077 | } | |
2078 | ||
2079 | if (unlikely(mlx5_wq_overflow(&qp->sq, nreq, qp->ibqp.send_cq))) { | |
2080 | mlx5_ib_warn(dev, "\n"); | |
2081 | err = -ENOMEM; | |
2082 | *bad_wr = wr; | |
2083 | goto out; | |
2084 | } | |
2085 | ||
2086 | fence = qp->fm_cache; | |
2087 | num_sge = wr->num_sge; | |
2088 | if (unlikely(num_sge > qp->sq.max_gs)) { | |
2089 | mlx5_ib_warn(dev, "\n"); | |
2090 | err = -ENOMEM; | |
2091 | *bad_wr = wr; | |
2092 | goto out; | |
2093 | } | |
2094 | ||
2095 | idx = qp->sq.cur_post & (qp->sq.wqe_cnt - 1); | |
2096 | seg = mlx5_get_send_wqe(qp, idx); | |
2097 | ctrl = seg; | |
2098 | *(uint32_t *)(seg + 8) = 0; | |
2099 | ctrl->imm = send_ieth(wr); | |
2100 | ctrl->fm_ce_se = qp->sq_signal_bits | | |
2101 | (wr->send_flags & IB_SEND_SIGNALED ? | |
2102 | MLX5_WQE_CTRL_CQ_UPDATE : 0) | | |
2103 | (wr->send_flags & IB_SEND_SOLICITED ? | |
2104 | MLX5_WQE_CTRL_SOLICITED : 0); | |
2105 | ||
2106 | seg += sizeof(*ctrl); | |
2107 | size = sizeof(*ctrl) / 16; | |
2108 | ||
2109 | switch (ibqp->qp_type) { | |
2110 | case IB_QPT_XRC_INI: | |
2111 | xrc = seg; | |
2112 | xrc->xrc_srqn = htonl(wr->xrc_remote_srq_num); | |
2113 | seg += sizeof(*xrc); | |
2114 | size += sizeof(*xrc) / 16; | |
2115 | /* fall through */ | |
2116 | case IB_QPT_RC: | |
2117 | switch (wr->opcode) { | |
2118 | case IB_WR_RDMA_READ: | |
2119 | case IB_WR_RDMA_WRITE: | |
2120 | case IB_WR_RDMA_WRITE_WITH_IMM: | |
2121 | set_raddr_seg(seg, wr->wr.rdma.remote_addr, | |
2122 | wr->wr.rdma.rkey); | |
2123 | seg += sizeof(struct mlx5_wqe_raddr_seg); | |
2124 | size += sizeof(struct mlx5_wqe_raddr_seg) / 16; | |
2125 | break; | |
2126 | ||
2127 | case IB_WR_ATOMIC_CMP_AND_SWP: | |
2128 | case IB_WR_ATOMIC_FETCH_AND_ADD: | |
e126ba97 | 2129 | case IB_WR_MASKED_ATOMIC_CMP_AND_SWP: |
81bea28f EC |
2130 | mlx5_ib_warn(dev, "Atomic operations are not supported yet\n"); |
2131 | err = -ENOSYS; | |
2132 | *bad_wr = wr; | |
2133 | goto out; | |
e126ba97 EC |
2134 | |
2135 | case IB_WR_LOCAL_INV: | |
2136 | next_fence = MLX5_FENCE_MODE_INITIATOR_SMALL; | |
2137 | qp->sq.wr_data[idx] = IB_WR_LOCAL_INV; | |
2138 | ctrl->imm = cpu_to_be32(wr->ex.invalidate_rkey); | |
2139 | err = set_frwr_li_wr(&seg, wr, &size, mdev, to_mpd(ibqp->pd), qp); | |
2140 | if (err) { | |
2141 | mlx5_ib_warn(dev, "\n"); | |
2142 | *bad_wr = wr; | |
2143 | goto out; | |
2144 | } | |
2145 | num_sge = 0; | |
2146 | break; | |
2147 | ||
2148 | case IB_WR_FAST_REG_MR: | |
2149 | next_fence = MLX5_FENCE_MODE_INITIATOR_SMALL; | |
2150 | qp->sq.wr_data[idx] = IB_WR_FAST_REG_MR; | |
2151 | ctrl->imm = cpu_to_be32(wr->wr.fast_reg.rkey); | |
2152 | err = set_frwr_li_wr(&seg, wr, &size, mdev, to_mpd(ibqp->pd), qp); | |
2153 | if (err) { | |
2154 | mlx5_ib_warn(dev, "\n"); | |
2155 | *bad_wr = wr; | |
2156 | goto out; | |
2157 | } | |
2158 | num_sge = 0; | |
2159 | break; | |
2160 | ||
2161 | default: | |
2162 | break; | |
2163 | } | |
2164 | break; | |
2165 | ||
2166 | case IB_QPT_UC: | |
2167 | switch (wr->opcode) { | |
2168 | case IB_WR_RDMA_WRITE: | |
2169 | case IB_WR_RDMA_WRITE_WITH_IMM: | |
2170 | set_raddr_seg(seg, wr->wr.rdma.remote_addr, | |
2171 | wr->wr.rdma.rkey); | |
2172 | seg += sizeof(struct mlx5_wqe_raddr_seg); | |
2173 | size += sizeof(struct mlx5_wqe_raddr_seg) / 16; | |
2174 | break; | |
2175 | ||
2176 | default: | |
2177 | break; | |
2178 | } | |
2179 | break; | |
2180 | ||
2181 | case IB_QPT_UD: | |
2182 | case IB_QPT_SMI: | |
2183 | case IB_QPT_GSI: | |
2184 | set_datagram_seg(seg, wr); | |
2185 | seg += sizeof(struct mlx5_wqe_datagram_seg); | |
2186 | size += sizeof(struct mlx5_wqe_datagram_seg) / 16; | |
2187 | if (unlikely((seg == qend))) | |
2188 | seg = mlx5_get_send_wqe(qp, 0); | |
2189 | break; | |
2190 | ||
2191 | case MLX5_IB_QPT_REG_UMR: | |
2192 | if (wr->opcode != MLX5_IB_WR_UMR) { | |
2193 | err = -EINVAL; | |
2194 | mlx5_ib_warn(dev, "bad opcode\n"); | |
2195 | goto out; | |
2196 | } | |
2197 | qp->sq.wr_data[idx] = MLX5_IB_WR_UMR; | |
2198 | ctrl->imm = cpu_to_be32(wr->wr.fast_reg.rkey); | |
2199 | set_reg_umr_segment(seg, wr); | |
2200 | seg += sizeof(struct mlx5_wqe_umr_ctrl_seg); | |
2201 | size += sizeof(struct mlx5_wqe_umr_ctrl_seg) / 16; | |
2202 | if (unlikely((seg == qend))) | |
2203 | seg = mlx5_get_send_wqe(qp, 0); | |
2204 | set_reg_mkey_segment(seg, wr); | |
2205 | seg += sizeof(struct mlx5_mkey_seg); | |
2206 | size += sizeof(struct mlx5_mkey_seg) / 16; | |
2207 | if (unlikely((seg == qend))) | |
2208 | seg = mlx5_get_send_wqe(qp, 0); | |
2209 | break; | |
2210 | ||
2211 | default: | |
2212 | break; | |
2213 | } | |
2214 | ||
2215 | if (wr->send_flags & IB_SEND_INLINE && num_sge) { | |
2216 | int uninitialized_var(sz); | |
2217 | ||
2218 | err = set_data_inl_seg(qp, wr, seg, &sz); | |
2219 | if (unlikely(err)) { | |
2220 | mlx5_ib_warn(dev, "\n"); | |
2221 | *bad_wr = wr; | |
2222 | goto out; | |
2223 | } | |
2224 | inl = 1; | |
2225 | size += sz; | |
2226 | } else { | |
2227 | dpseg = seg; | |
2228 | for (i = 0; i < num_sge; i++) { | |
2229 | if (unlikely(dpseg == qend)) { | |
2230 | seg = mlx5_get_send_wqe(qp, 0); | |
2231 | dpseg = seg; | |
2232 | } | |
2233 | if (likely(wr->sg_list[i].length)) { | |
2234 | set_data_ptr_seg(dpseg, wr->sg_list + i); | |
2235 | size += sizeof(struct mlx5_wqe_data_seg) / 16; | |
2236 | dpseg++; | |
2237 | } | |
2238 | } | |
2239 | } | |
2240 | ||
2241 | mlx5_opcode = mlx5_ib_opcode[wr->opcode]; | |
2242 | ctrl->opmod_idx_opcode = cpu_to_be32(((u32)(qp->sq.cur_post) << 8) | | |
2243 | mlx5_opcode | | |
2244 | ((u32)opmod << 24)); | |
2245 | ctrl->qpn_ds = cpu_to_be32(size | (qp->mqp.qpn << 8)); | |
2246 | ctrl->fm_ce_se |= get_fence(fence, wr); | |
2247 | qp->fm_cache = next_fence; | |
2248 | if (unlikely(qp->wq_sig)) | |
2249 | ctrl->signature = wq_sig(ctrl); | |
2250 | ||
2251 | qp->sq.wrid[idx] = wr->wr_id; | |
2252 | qp->sq.w_list[idx].opcode = mlx5_opcode; | |
2253 | qp->sq.wqe_head[idx] = qp->sq.head + nreq; | |
2254 | qp->sq.cur_post += DIV_ROUND_UP(size * 16, MLX5_SEND_WQE_BB); | |
2255 | qp->sq.w_list[idx].next = qp->sq.cur_post; | |
2256 | ||
2257 | if (0) | |
2258 | dump_wqe(qp, idx, size); | |
2259 | } | |
2260 | ||
2261 | out: | |
2262 | if (likely(nreq)) { | |
2263 | qp->sq.head += nreq; | |
2264 | ||
2265 | /* Make sure that descriptors are written before | |
2266 | * updating doorbell record and ringing the doorbell | |
2267 | */ | |
2268 | wmb(); | |
2269 | ||
2270 | qp->db.db[MLX5_SND_DBR] = cpu_to_be32(qp->sq.cur_post); | |
2271 | ||
ada388f7 EC |
2272 | /* Make sure doorbell record is visible to the HCA before |
2273 | * we hit doorbell */ | |
2274 | wmb(); | |
2275 | ||
e126ba97 EC |
2276 | if (bf->need_lock) |
2277 | spin_lock(&bf->lock); | |
2278 | ||
2279 | /* TBD enable WC */ | |
2280 | if (0 && nreq == 1 && bf->uuarn && inl && size > 1 && size <= bf->buf_size / 16) { | |
2281 | mlx5_bf_copy(bf->reg + bf->offset, (u64 *)ctrl, ALIGN(size * 16, 64), qp); | |
2282 | /* wc_wmb(); */ | |
2283 | } else { | |
2284 | mlx5_write64((__be32 *)ctrl, bf->regreg + bf->offset, | |
2285 | MLX5_GET_DOORBELL_LOCK(&bf->lock32)); | |
2286 | /* Make sure doorbells don't leak out of SQ spinlock | |
2287 | * and reach the HCA out of order. | |
2288 | */ | |
2289 | mmiowb(); | |
2290 | } | |
2291 | bf->offset ^= bf->buf_size; | |
2292 | if (bf->need_lock) | |
2293 | spin_unlock(&bf->lock); | |
2294 | } | |
2295 | ||
2296 | spin_unlock_irqrestore(&qp->sq.lock, flags); | |
2297 | ||
2298 | return err; | |
2299 | } | |
2300 | ||
2301 | static void set_sig_seg(struct mlx5_rwqe_sig *sig, int size) | |
2302 | { | |
2303 | sig->signature = calc_sig(sig, size); | |
2304 | } | |
2305 | ||
2306 | int mlx5_ib_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr, | |
2307 | struct ib_recv_wr **bad_wr) | |
2308 | { | |
2309 | struct mlx5_ib_qp *qp = to_mqp(ibqp); | |
2310 | struct mlx5_wqe_data_seg *scat; | |
2311 | struct mlx5_rwqe_sig *sig; | |
2312 | unsigned long flags; | |
2313 | int err = 0; | |
2314 | int nreq; | |
2315 | int ind; | |
2316 | int i; | |
2317 | ||
2318 | spin_lock_irqsave(&qp->rq.lock, flags); | |
2319 | ||
2320 | ind = qp->rq.head & (qp->rq.wqe_cnt - 1); | |
2321 | ||
2322 | for (nreq = 0; wr; nreq++, wr = wr->next) { | |
2323 | if (mlx5_wq_overflow(&qp->rq, nreq, qp->ibqp.recv_cq)) { | |
2324 | err = -ENOMEM; | |
2325 | *bad_wr = wr; | |
2326 | goto out; | |
2327 | } | |
2328 | ||
2329 | if (unlikely(wr->num_sge > qp->rq.max_gs)) { | |
2330 | err = -EINVAL; | |
2331 | *bad_wr = wr; | |
2332 | goto out; | |
2333 | } | |
2334 | ||
2335 | scat = get_recv_wqe(qp, ind); | |
2336 | if (qp->wq_sig) | |
2337 | scat++; | |
2338 | ||
2339 | for (i = 0; i < wr->num_sge; i++) | |
2340 | set_data_ptr_seg(scat + i, wr->sg_list + i); | |
2341 | ||
2342 | if (i < qp->rq.max_gs) { | |
2343 | scat[i].byte_count = 0; | |
2344 | scat[i].lkey = cpu_to_be32(MLX5_INVALID_LKEY); | |
2345 | scat[i].addr = 0; | |
2346 | } | |
2347 | ||
2348 | if (qp->wq_sig) { | |
2349 | sig = (struct mlx5_rwqe_sig *)scat; | |
2350 | set_sig_seg(sig, (qp->rq.max_gs + 1) << 2); | |
2351 | } | |
2352 | ||
2353 | qp->rq.wrid[ind] = wr->wr_id; | |
2354 | ||
2355 | ind = (ind + 1) & (qp->rq.wqe_cnt - 1); | |
2356 | } | |
2357 | ||
2358 | out: | |
2359 | if (likely(nreq)) { | |
2360 | qp->rq.head += nreq; | |
2361 | ||
2362 | /* Make sure that descriptors are written before | |
2363 | * doorbell record. | |
2364 | */ | |
2365 | wmb(); | |
2366 | ||
2367 | *qp->db.db = cpu_to_be32(qp->rq.head & 0xffff); | |
2368 | } | |
2369 | ||
2370 | spin_unlock_irqrestore(&qp->rq.lock, flags); | |
2371 | ||
2372 | return err; | |
2373 | } | |
2374 | ||
2375 | static inline enum ib_qp_state to_ib_qp_state(enum mlx5_qp_state mlx5_state) | |
2376 | { | |
2377 | switch (mlx5_state) { | |
2378 | case MLX5_QP_STATE_RST: return IB_QPS_RESET; | |
2379 | case MLX5_QP_STATE_INIT: return IB_QPS_INIT; | |
2380 | case MLX5_QP_STATE_RTR: return IB_QPS_RTR; | |
2381 | case MLX5_QP_STATE_RTS: return IB_QPS_RTS; | |
2382 | case MLX5_QP_STATE_SQ_DRAINING: | |
2383 | case MLX5_QP_STATE_SQD: return IB_QPS_SQD; | |
2384 | case MLX5_QP_STATE_SQER: return IB_QPS_SQE; | |
2385 | case MLX5_QP_STATE_ERR: return IB_QPS_ERR; | |
2386 | default: return -1; | |
2387 | } | |
2388 | } | |
2389 | ||
2390 | static inline enum ib_mig_state to_ib_mig_state(int mlx5_mig_state) | |
2391 | { | |
2392 | switch (mlx5_mig_state) { | |
2393 | case MLX5_QP_PM_ARMED: return IB_MIG_ARMED; | |
2394 | case MLX5_QP_PM_REARM: return IB_MIG_REARM; | |
2395 | case MLX5_QP_PM_MIGRATED: return IB_MIG_MIGRATED; | |
2396 | default: return -1; | |
2397 | } | |
2398 | } | |
2399 | ||
2400 | static int to_ib_qp_access_flags(int mlx5_flags) | |
2401 | { | |
2402 | int ib_flags = 0; | |
2403 | ||
2404 | if (mlx5_flags & MLX5_QP_BIT_RRE) | |
2405 | ib_flags |= IB_ACCESS_REMOTE_READ; | |
2406 | if (mlx5_flags & MLX5_QP_BIT_RWE) | |
2407 | ib_flags |= IB_ACCESS_REMOTE_WRITE; | |
2408 | if (mlx5_flags & MLX5_QP_BIT_RAE) | |
2409 | ib_flags |= IB_ACCESS_REMOTE_ATOMIC; | |
2410 | ||
2411 | return ib_flags; | |
2412 | } | |
2413 | ||
2414 | static void to_ib_ah_attr(struct mlx5_ib_dev *ibdev, struct ib_ah_attr *ib_ah_attr, | |
2415 | struct mlx5_qp_path *path) | |
2416 | { | |
2417 | struct mlx5_core_dev *dev = &ibdev->mdev; | |
2418 | ||
2419 | memset(ib_ah_attr, 0, sizeof(*ib_ah_attr)); | |
2420 | ib_ah_attr->port_num = path->port; | |
2421 | ||
2422 | if (ib_ah_attr->port_num == 0 || ib_ah_attr->port_num > dev->caps.num_ports) | |
2423 | return; | |
2424 | ||
2425 | ib_ah_attr->sl = path->sl & 0xf; | |
2426 | ||
2427 | ib_ah_attr->dlid = be16_to_cpu(path->rlid); | |
2428 | ib_ah_attr->src_path_bits = path->grh_mlid & 0x7f; | |
2429 | ib_ah_attr->static_rate = path->static_rate ? path->static_rate - 5 : 0; | |
2430 | ib_ah_attr->ah_flags = (path->grh_mlid & (1 << 7)) ? IB_AH_GRH : 0; | |
2431 | if (ib_ah_attr->ah_flags) { | |
2432 | ib_ah_attr->grh.sgid_index = path->mgid_index; | |
2433 | ib_ah_attr->grh.hop_limit = path->hop_limit; | |
2434 | ib_ah_attr->grh.traffic_class = | |
2435 | (be32_to_cpu(path->tclass_flowlabel) >> 20) & 0xff; | |
2436 | ib_ah_attr->grh.flow_label = | |
2437 | be32_to_cpu(path->tclass_flowlabel) & 0xfffff; | |
2438 | memcpy(ib_ah_attr->grh.dgid.raw, | |
2439 | path->rgid, sizeof(ib_ah_attr->grh.dgid.raw)); | |
2440 | } | |
2441 | } | |
2442 | ||
2443 | int mlx5_ib_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr, int qp_attr_mask, | |
2444 | struct ib_qp_init_attr *qp_init_attr) | |
2445 | { | |
2446 | struct mlx5_ib_dev *dev = to_mdev(ibqp->device); | |
2447 | struct mlx5_ib_qp *qp = to_mqp(ibqp); | |
2448 | struct mlx5_query_qp_mbox_out *outb; | |
2449 | struct mlx5_qp_context *context; | |
2450 | int mlx5_state; | |
2451 | int err = 0; | |
2452 | ||
2453 | mutex_lock(&qp->mutex); | |
2454 | outb = kzalloc(sizeof(*outb), GFP_KERNEL); | |
2455 | if (!outb) { | |
2456 | err = -ENOMEM; | |
2457 | goto out; | |
2458 | } | |
2459 | context = &outb->ctx; | |
2460 | err = mlx5_core_qp_query(&dev->mdev, &qp->mqp, outb, sizeof(*outb)); | |
2461 | if (err) | |
2462 | goto out_free; | |
2463 | ||
2464 | mlx5_state = be32_to_cpu(context->flags) >> 28; | |
2465 | ||
2466 | qp->state = to_ib_qp_state(mlx5_state); | |
2467 | qp_attr->qp_state = qp->state; | |
2468 | qp_attr->path_mtu = context->mtu_msgmax >> 5; | |
2469 | qp_attr->path_mig_state = | |
2470 | to_ib_mig_state((be32_to_cpu(context->flags) >> 11) & 0x3); | |
2471 | qp_attr->qkey = be32_to_cpu(context->qkey); | |
2472 | qp_attr->rq_psn = be32_to_cpu(context->rnr_nextrecvpsn) & 0xffffff; | |
2473 | qp_attr->sq_psn = be32_to_cpu(context->next_send_psn) & 0xffffff; | |
2474 | qp_attr->dest_qp_num = be32_to_cpu(context->log_pg_sz_remote_qpn) & 0xffffff; | |
2475 | qp_attr->qp_access_flags = | |
2476 | to_ib_qp_access_flags(be32_to_cpu(context->params2)); | |
2477 | ||
2478 | if (qp->ibqp.qp_type == IB_QPT_RC || qp->ibqp.qp_type == IB_QPT_UC) { | |
2479 | to_ib_ah_attr(dev, &qp_attr->ah_attr, &context->pri_path); | |
2480 | to_ib_ah_attr(dev, &qp_attr->alt_ah_attr, &context->alt_path); | |
2481 | qp_attr->alt_pkey_index = context->alt_path.pkey_index & 0x7f; | |
2482 | qp_attr->alt_port_num = qp_attr->alt_ah_attr.port_num; | |
2483 | } | |
2484 | ||
2485 | qp_attr->pkey_index = context->pri_path.pkey_index & 0x7f; | |
2486 | qp_attr->port_num = context->pri_path.port; | |
2487 | ||
2488 | /* qp_attr->en_sqd_async_notify is only applicable in modify qp */ | |
2489 | qp_attr->sq_draining = mlx5_state == MLX5_QP_STATE_SQ_DRAINING; | |
2490 | ||
2491 | qp_attr->max_rd_atomic = 1 << ((be32_to_cpu(context->params1) >> 21) & 0x7); | |
2492 | ||
2493 | qp_attr->max_dest_rd_atomic = | |
2494 | 1 << ((be32_to_cpu(context->params2) >> 21) & 0x7); | |
2495 | qp_attr->min_rnr_timer = | |
2496 | (be32_to_cpu(context->rnr_nextrecvpsn) >> 24) & 0x1f; | |
2497 | qp_attr->timeout = context->pri_path.ackto_lt >> 3; | |
2498 | qp_attr->retry_cnt = (be32_to_cpu(context->params1) >> 16) & 0x7; | |
2499 | qp_attr->rnr_retry = (be32_to_cpu(context->params1) >> 13) & 0x7; | |
2500 | qp_attr->alt_timeout = context->alt_path.ackto_lt >> 3; | |
2501 | qp_attr->cur_qp_state = qp_attr->qp_state; | |
2502 | qp_attr->cap.max_recv_wr = qp->rq.wqe_cnt; | |
2503 | qp_attr->cap.max_recv_sge = qp->rq.max_gs; | |
2504 | ||
2505 | if (!ibqp->uobject) { | |
2506 | qp_attr->cap.max_send_wr = qp->sq.wqe_cnt; | |
2507 | qp_attr->cap.max_send_sge = qp->sq.max_gs; | |
2508 | } else { | |
2509 | qp_attr->cap.max_send_wr = 0; | |
2510 | qp_attr->cap.max_send_sge = 0; | |
2511 | } | |
2512 | ||
2513 | /* We don't support inline sends for kernel QPs (yet), and we | |
2514 | * don't know what userspace's value should be. | |
2515 | */ | |
2516 | qp_attr->cap.max_inline_data = 0; | |
2517 | ||
2518 | qp_init_attr->cap = qp_attr->cap; | |
2519 | ||
2520 | qp_init_attr->create_flags = 0; | |
2521 | if (qp->flags & MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK) | |
2522 | qp_init_attr->create_flags |= IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK; | |
2523 | ||
2524 | qp_init_attr->sq_sig_type = qp->sq_signal_bits & MLX5_WQE_CTRL_CQ_UPDATE ? | |
2525 | IB_SIGNAL_ALL_WR : IB_SIGNAL_REQ_WR; | |
2526 | ||
2527 | out_free: | |
2528 | kfree(outb); | |
2529 | ||
2530 | out: | |
2531 | mutex_unlock(&qp->mutex); | |
2532 | return err; | |
2533 | } | |
2534 | ||
2535 | struct ib_xrcd *mlx5_ib_alloc_xrcd(struct ib_device *ibdev, | |
2536 | struct ib_ucontext *context, | |
2537 | struct ib_udata *udata) | |
2538 | { | |
2539 | struct mlx5_ib_dev *dev = to_mdev(ibdev); | |
2540 | struct mlx5_ib_xrcd *xrcd; | |
2541 | int err; | |
2542 | ||
2543 | if (!(dev->mdev.caps.flags & MLX5_DEV_CAP_FLAG_XRC)) | |
2544 | return ERR_PTR(-ENOSYS); | |
2545 | ||
2546 | xrcd = kmalloc(sizeof(*xrcd), GFP_KERNEL); | |
2547 | if (!xrcd) | |
2548 | return ERR_PTR(-ENOMEM); | |
2549 | ||
2550 | err = mlx5_core_xrcd_alloc(&dev->mdev, &xrcd->xrcdn); | |
2551 | if (err) { | |
2552 | kfree(xrcd); | |
2553 | return ERR_PTR(-ENOMEM); | |
2554 | } | |
2555 | ||
2556 | return &xrcd->ibxrcd; | |
2557 | } | |
2558 | ||
2559 | int mlx5_ib_dealloc_xrcd(struct ib_xrcd *xrcd) | |
2560 | { | |
2561 | struct mlx5_ib_dev *dev = to_mdev(xrcd->device); | |
2562 | u32 xrcdn = to_mxrcd(xrcd)->xrcdn; | |
2563 | int err; | |
2564 | ||
2565 | err = mlx5_core_xrcd_dealloc(&dev->mdev, xrcdn); | |
2566 | if (err) { | |
2567 | mlx5_ib_warn(dev, "failed to dealloc xrcdn 0x%x\n", xrcdn); | |
2568 | return err; | |
2569 | } | |
2570 | ||
2571 | kfree(xrcd); | |
2572 | ||
2573 | return 0; | |
2574 | } |