1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
2 /*
3 * Copyright (c) 2013-2018, Mellanox Technologies inc. All rights reserved.
4 */
5
6 #include <linux/kernel.h>
7 #include <linux/mlx5/driver.h>
8 #include "mlx5_ib.h"
9 #include "srq.h"
10 #include "qp.h"
11
get_pas_size(struct mlx5_srq_attr * in)12 static int get_pas_size(struct mlx5_srq_attr *in)
13 {
14 u32 log_page_size = in->log_page_size + 12;
15 u32 log_srq_size = in->log_size;
16 u32 log_rq_stride = in->wqe_shift;
17 u32 page_offset = in->page_offset;
18 u32 po_quanta = 1 << (log_page_size - 6);
19 u32 rq_sz = 1 << (log_srq_size + 4 + log_rq_stride);
20 u32 page_size = 1 << log_page_size;
21 u32 rq_sz_po = rq_sz + (page_offset * po_quanta);
22 u32 rq_num_pas = DIV_ROUND_UP(rq_sz_po, page_size);
23
24 return rq_num_pas * sizeof(u64);
25 }
26
set_wq(void * wq,struct mlx5_srq_attr * in)27 static void set_wq(void *wq, struct mlx5_srq_attr *in)
28 {
29 MLX5_SET(wq, wq, wq_signature, !!(in->flags
30 & MLX5_SRQ_FLAG_WQ_SIG));
31 MLX5_SET(wq, wq, log_wq_pg_sz, in->log_page_size);
32 MLX5_SET(wq, wq, log_wq_stride, in->wqe_shift + 4);
33 MLX5_SET(wq, wq, log_wq_sz, in->log_size);
34 MLX5_SET(wq, wq, page_offset, in->page_offset);
35 MLX5_SET(wq, wq, lwm, in->lwm);
36 MLX5_SET(wq, wq, pd, in->pd);
37 MLX5_SET64(wq, wq, dbr_addr, in->db_record);
38 }
39
set_srqc(void * srqc,struct mlx5_srq_attr * in)40 static void set_srqc(void *srqc, struct mlx5_srq_attr *in)
41 {
42 MLX5_SET(srqc, srqc, wq_signature, !!(in->flags
43 & MLX5_SRQ_FLAG_WQ_SIG));
44 MLX5_SET(srqc, srqc, log_page_size, in->log_page_size);
45 MLX5_SET(srqc, srqc, log_rq_stride, in->wqe_shift);
46 MLX5_SET(srqc, srqc, log_srq_size, in->log_size);
47 MLX5_SET(srqc, srqc, page_offset, in->page_offset);
48 MLX5_SET(srqc, srqc, lwm, in->lwm);
49 MLX5_SET(srqc, srqc, pd, in->pd);
50 MLX5_SET64(srqc, srqc, dbr_addr, in->db_record);
51 MLX5_SET(srqc, srqc, xrcd, in->xrcd);
52 MLX5_SET(srqc, srqc, cqn, in->cqn);
53 }
54
get_wq(void * wq,struct mlx5_srq_attr * in)55 static void get_wq(void *wq, struct mlx5_srq_attr *in)
56 {
57 if (MLX5_GET(wq, wq, wq_signature))
58 in->flags &= MLX5_SRQ_FLAG_WQ_SIG;
59 in->log_page_size = MLX5_GET(wq, wq, log_wq_pg_sz);
60 in->wqe_shift = MLX5_GET(wq, wq, log_wq_stride) - 4;
61 in->log_size = MLX5_GET(wq, wq, log_wq_sz);
62 in->page_offset = MLX5_GET(wq, wq, page_offset);
63 in->lwm = MLX5_GET(wq, wq, lwm);
64 in->pd = MLX5_GET(wq, wq, pd);
65 in->db_record = MLX5_GET64(wq, wq, dbr_addr);
66 }
67
get_srqc(void * srqc,struct mlx5_srq_attr * in)68 static void get_srqc(void *srqc, struct mlx5_srq_attr *in)
69 {
70 if (MLX5_GET(srqc, srqc, wq_signature))
71 in->flags &= MLX5_SRQ_FLAG_WQ_SIG;
72 in->log_page_size = MLX5_GET(srqc, srqc, log_page_size);
73 in->wqe_shift = MLX5_GET(srqc, srqc, log_rq_stride);
74 in->log_size = MLX5_GET(srqc, srqc, log_srq_size);
75 in->page_offset = MLX5_GET(srqc, srqc, page_offset);
76 in->lwm = MLX5_GET(srqc, srqc, lwm);
77 in->pd = MLX5_GET(srqc, srqc, pd);
78 in->db_record = MLX5_GET64(srqc, srqc, dbr_addr);
79 }
80
mlx5_cmd_get_srq(struct mlx5_ib_dev * dev,u32 srqn)81 struct mlx5_core_srq *mlx5_cmd_get_srq(struct mlx5_ib_dev *dev, u32 srqn)
82 {
83 struct mlx5_srq_table *table = &dev->srq_table;
84 struct mlx5_core_srq *srq;
85
86 xa_lock_irq(&table->array);
87 srq = xa_load(&table->array, srqn);
88 if (srq)
89 refcount_inc(&srq->common.refcount);
90 xa_unlock_irq(&table->array);
91
92 return srq;
93 }
94
create_srq_cmd(struct mlx5_ib_dev * dev,struct mlx5_core_srq * srq,struct mlx5_srq_attr * in)95 static int create_srq_cmd(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq,
96 struct mlx5_srq_attr *in)
97 {
98 u32 create_out[MLX5_ST_SZ_DW(create_srq_out)] = {0};
99 void *create_in;
100 void *srqc;
101 void *pas;
102 int pas_size;
103 int inlen;
104 int err;
105
106 pas_size = get_pas_size(in);
107 inlen = MLX5_ST_SZ_BYTES(create_srq_in) + pas_size;
108 create_in = kvzalloc(inlen, GFP_KERNEL);
109 if (!create_in)
110 return -ENOMEM;
111
112 MLX5_SET(create_srq_in, create_in, uid, in->uid);
113 srqc = MLX5_ADDR_OF(create_srq_in, create_in, srq_context_entry);
114 pas = MLX5_ADDR_OF(create_srq_in, create_in, pas);
115
116 set_srqc(srqc, in);
117 memcpy(pas, in->pas, pas_size);
118
119 MLX5_SET(create_srq_in, create_in, opcode,
120 MLX5_CMD_OP_CREATE_SRQ);
121
122 err = mlx5_cmd_exec(dev->mdev, create_in, inlen, create_out,
123 sizeof(create_out));
124 kvfree(create_in);
125 if (!err) {
126 srq->srqn = MLX5_GET(create_srq_out, create_out, srqn);
127 srq->uid = in->uid;
128 }
129
130 return err;
131 }
132
destroy_srq_cmd(struct mlx5_ib_dev * dev,struct mlx5_core_srq * srq)133 static int destroy_srq_cmd(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq)
134 {
135 u32 in[MLX5_ST_SZ_DW(destroy_srq_in)] = {};
136
137 MLX5_SET(destroy_srq_in, in, opcode, MLX5_CMD_OP_DESTROY_SRQ);
138 MLX5_SET(destroy_srq_in, in, srqn, srq->srqn);
139 MLX5_SET(destroy_srq_in, in, uid, srq->uid);
140
141 return mlx5_cmd_exec_in(dev->mdev, destroy_srq, in);
142 }
143
arm_srq_cmd(struct mlx5_ib_dev * dev,struct mlx5_core_srq * srq,u16 lwm,int is_srq)144 static int arm_srq_cmd(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq,
145 u16 lwm, int is_srq)
146 {
147 u32 in[MLX5_ST_SZ_DW(arm_rq_in)] = {};
148
149 MLX5_SET(arm_rq_in, in, opcode, MLX5_CMD_OP_ARM_RQ);
150 MLX5_SET(arm_rq_in, in, op_mod, MLX5_ARM_RQ_IN_OP_MOD_SRQ);
151 MLX5_SET(arm_rq_in, in, srq_number, srq->srqn);
152 MLX5_SET(arm_rq_in, in, lwm, lwm);
153 MLX5_SET(arm_rq_in, in, uid, srq->uid);
154
155 return mlx5_cmd_exec_in(dev->mdev, arm_rq, in);
156 }
157
query_srq_cmd(struct mlx5_ib_dev * dev,struct mlx5_core_srq * srq,struct mlx5_srq_attr * out)158 static int query_srq_cmd(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq,
159 struct mlx5_srq_attr *out)
160 {
161 u32 in[MLX5_ST_SZ_DW(query_srq_in)] = {};
162 u32 *srq_out;
163 void *srqc;
164 int err;
165
166 srq_out = kvzalloc(MLX5_ST_SZ_BYTES(query_srq_out), GFP_KERNEL);
167 if (!srq_out)
168 return -ENOMEM;
169
170 MLX5_SET(query_srq_in, in, opcode, MLX5_CMD_OP_QUERY_SRQ);
171 MLX5_SET(query_srq_in, in, srqn, srq->srqn);
172 err = mlx5_cmd_exec_inout(dev->mdev, query_srq, in, srq_out);
173 if (err)
174 goto out;
175
176 srqc = MLX5_ADDR_OF(query_srq_out, srq_out, srq_context_entry);
177 get_srqc(srqc, out);
178 if (MLX5_GET(srqc, srqc, state) != MLX5_SRQC_STATE_GOOD)
179 out->flags |= MLX5_SRQ_FLAG_ERR;
180 out:
181 kvfree(srq_out);
182 return err;
183 }
184
create_xrc_srq_cmd(struct mlx5_ib_dev * dev,struct mlx5_core_srq * srq,struct mlx5_srq_attr * in)185 static int create_xrc_srq_cmd(struct mlx5_ib_dev *dev,
186 struct mlx5_core_srq *srq,
187 struct mlx5_srq_attr *in)
188 {
189 u32 create_out[MLX5_ST_SZ_DW(create_xrc_srq_out)];
190 void *create_in;
191 void *xrc_srqc;
192 void *pas;
193 int pas_size;
194 int inlen;
195 int err;
196
197 pas_size = get_pas_size(in);
198 inlen = MLX5_ST_SZ_BYTES(create_xrc_srq_in) + pas_size;
199 create_in = kvzalloc(inlen, GFP_KERNEL);
200 if (!create_in)
201 return -ENOMEM;
202
203 MLX5_SET(create_xrc_srq_in, create_in, uid, in->uid);
204 xrc_srqc = MLX5_ADDR_OF(create_xrc_srq_in, create_in,
205 xrc_srq_context_entry);
206 pas = MLX5_ADDR_OF(create_xrc_srq_in, create_in, pas);
207
208 set_srqc(xrc_srqc, in);
209 MLX5_SET(xrc_srqc, xrc_srqc, user_index, in->user_index);
210 memcpy(pas, in->pas, pas_size);
211 MLX5_SET(create_xrc_srq_in, create_in, opcode,
212 MLX5_CMD_OP_CREATE_XRC_SRQ);
213
214 memset(create_out, 0, sizeof(create_out));
215 err = mlx5_cmd_exec(dev->mdev, create_in, inlen, create_out,
216 sizeof(create_out));
217 if (err)
218 goto out;
219
220 srq->srqn = MLX5_GET(create_xrc_srq_out, create_out, xrc_srqn);
221 srq->uid = in->uid;
222 out:
223 kvfree(create_in);
224 return err;
225 }
226
destroy_xrc_srq_cmd(struct mlx5_ib_dev * dev,struct mlx5_core_srq * srq)227 static int destroy_xrc_srq_cmd(struct mlx5_ib_dev *dev,
228 struct mlx5_core_srq *srq)
229 {
230 u32 in[MLX5_ST_SZ_DW(destroy_xrc_srq_in)] = {};
231
232 MLX5_SET(destroy_xrc_srq_in, in, opcode, MLX5_CMD_OP_DESTROY_XRC_SRQ);
233 MLX5_SET(destroy_xrc_srq_in, in, xrc_srqn, srq->srqn);
234 MLX5_SET(destroy_xrc_srq_in, in, uid, srq->uid);
235
236 return mlx5_cmd_exec_in(dev->mdev, destroy_xrc_srq, in);
237 }
238
arm_xrc_srq_cmd(struct mlx5_ib_dev * dev,struct mlx5_core_srq * srq,u16 lwm)239 static int arm_xrc_srq_cmd(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq,
240 u16 lwm)
241 {
242 u32 in[MLX5_ST_SZ_DW(arm_xrc_srq_in)] = {};
243
244 MLX5_SET(arm_xrc_srq_in, in, opcode, MLX5_CMD_OP_ARM_XRC_SRQ);
245 MLX5_SET(arm_xrc_srq_in, in, op_mod,
246 MLX5_ARM_XRC_SRQ_IN_OP_MOD_XRC_SRQ);
247 MLX5_SET(arm_xrc_srq_in, in, xrc_srqn, srq->srqn);
248 MLX5_SET(arm_xrc_srq_in, in, lwm, lwm);
249 MLX5_SET(arm_xrc_srq_in, in, uid, srq->uid);
250
251 return mlx5_cmd_exec_in(dev->mdev, arm_xrc_srq, in);
252 }
253
query_xrc_srq_cmd(struct mlx5_ib_dev * dev,struct mlx5_core_srq * srq,struct mlx5_srq_attr * out)254 static int query_xrc_srq_cmd(struct mlx5_ib_dev *dev,
255 struct mlx5_core_srq *srq,
256 struct mlx5_srq_attr *out)
257 {
258 u32 in[MLX5_ST_SZ_DW(query_xrc_srq_in)] = {};
259 u32 *xrcsrq_out;
260 void *xrc_srqc;
261 int err;
262
263 xrcsrq_out = kvzalloc(MLX5_ST_SZ_BYTES(query_xrc_srq_out), GFP_KERNEL);
264 if (!xrcsrq_out)
265 return -ENOMEM;
266
267 MLX5_SET(query_xrc_srq_in, in, opcode, MLX5_CMD_OP_QUERY_XRC_SRQ);
268 MLX5_SET(query_xrc_srq_in, in, xrc_srqn, srq->srqn);
269
270 err = mlx5_cmd_exec_inout(dev->mdev, query_xrc_srq, in, xrcsrq_out);
271 if (err)
272 goto out;
273
274 xrc_srqc = MLX5_ADDR_OF(query_xrc_srq_out, xrcsrq_out,
275 xrc_srq_context_entry);
276 get_srqc(xrc_srqc, out);
277 if (MLX5_GET(xrc_srqc, xrc_srqc, state) != MLX5_XRC_SRQC_STATE_GOOD)
278 out->flags |= MLX5_SRQ_FLAG_ERR;
279
280 out:
281 kvfree(xrcsrq_out);
282 return err;
283 }
284
create_rmp_cmd(struct mlx5_ib_dev * dev,struct mlx5_core_srq * srq,struct mlx5_srq_attr * in)285 static int create_rmp_cmd(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq,
286 struct mlx5_srq_attr *in)
287 {
288 void *create_out = NULL;
289 void *create_in = NULL;
290 void *rmpc;
291 void *wq;
292 int pas_size;
293 int outlen;
294 int inlen;
295 int err;
296
297 pas_size = get_pas_size(in);
298 inlen = MLX5_ST_SZ_BYTES(create_rmp_in) + pas_size;
299 outlen = MLX5_ST_SZ_BYTES(create_rmp_out);
300 create_in = kvzalloc(inlen, GFP_KERNEL);
301 create_out = kvzalloc(outlen, GFP_KERNEL);
302 if (!create_in || !create_out) {
303 err = -ENOMEM;
304 goto out;
305 }
306
307 rmpc = MLX5_ADDR_OF(create_rmp_in, create_in, ctx);
308 wq = MLX5_ADDR_OF(rmpc, rmpc, wq);
309
310 MLX5_SET(rmpc, rmpc, state, MLX5_RMPC_STATE_RDY);
311 MLX5_SET(create_rmp_in, create_in, uid, in->uid);
312 set_wq(wq, in);
313 memcpy(MLX5_ADDR_OF(rmpc, rmpc, wq.pas), in->pas, pas_size);
314
315 MLX5_SET(create_rmp_in, create_in, opcode, MLX5_CMD_OP_CREATE_RMP);
316 err = mlx5_cmd_exec(dev->mdev, create_in, inlen, create_out, outlen);
317 if (!err) {
318 srq->srqn = MLX5_GET(create_rmp_out, create_out, rmpn);
319 srq->uid = in->uid;
320 }
321
322 out:
323 kvfree(create_in);
324 kvfree(create_out);
325 return err;
326 }
327
destroy_rmp_cmd(struct mlx5_ib_dev * dev,struct mlx5_core_srq * srq)328 static int destroy_rmp_cmd(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq)
329 {
330 u32 in[MLX5_ST_SZ_DW(destroy_rmp_in)] = {};
331
332 MLX5_SET(destroy_rmp_in, in, opcode, MLX5_CMD_OP_DESTROY_RMP);
333 MLX5_SET(destroy_rmp_in, in, rmpn, srq->srqn);
334 MLX5_SET(destroy_rmp_in, in, uid, srq->uid);
335 return mlx5_cmd_exec_in(dev->mdev, destroy_rmp, in);
336 }
337
arm_rmp_cmd(struct mlx5_ib_dev * dev,struct mlx5_core_srq * srq,u16 lwm)338 static int arm_rmp_cmd(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq,
339 u16 lwm)
340 {
341 void *out = NULL;
342 void *in = NULL;
343 void *rmpc;
344 void *wq;
345 void *bitmask;
346 int outlen;
347 int inlen;
348 int err;
349
350 inlen = MLX5_ST_SZ_BYTES(modify_rmp_in);
351 outlen = MLX5_ST_SZ_BYTES(modify_rmp_out);
352
353 in = kvzalloc(inlen, GFP_KERNEL);
354 out = kvzalloc(outlen, GFP_KERNEL);
355 if (!in || !out) {
356 err = -ENOMEM;
357 goto out;
358 }
359
360 rmpc = MLX5_ADDR_OF(modify_rmp_in, in, ctx);
361 bitmask = MLX5_ADDR_OF(modify_rmp_in, in, bitmask);
362 wq = MLX5_ADDR_OF(rmpc, rmpc, wq);
363
364 MLX5_SET(modify_rmp_in, in, rmp_state, MLX5_RMPC_STATE_RDY);
365 MLX5_SET(modify_rmp_in, in, rmpn, srq->srqn);
366 MLX5_SET(modify_rmp_in, in, uid, srq->uid);
367 MLX5_SET(wq, wq, lwm, lwm);
368 MLX5_SET(rmp_bitmask, bitmask, lwm, 1);
369 MLX5_SET(rmpc, rmpc, state, MLX5_RMPC_STATE_RDY);
370 MLX5_SET(modify_rmp_in, in, opcode, MLX5_CMD_OP_MODIFY_RMP);
371
372 err = mlx5_cmd_exec_inout(dev->mdev, modify_rmp, in, out);
373
374 out:
375 kvfree(in);
376 kvfree(out);
377 return err;
378 }
379
query_rmp_cmd(struct mlx5_ib_dev * dev,struct mlx5_core_srq * srq,struct mlx5_srq_attr * out)380 static int query_rmp_cmd(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq,
381 struct mlx5_srq_attr *out)
382 {
383 u32 *rmp_out = NULL;
384 u32 *rmp_in = NULL;
385 void *rmpc;
386 int outlen;
387 int inlen;
388 int err;
389
390 outlen = MLX5_ST_SZ_BYTES(query_rmp_out);
391 inlen = MLX5_ST_SZ_BYTES(query_rmp_in);
392
393 rmp_out = kvzalloc(outlen, GFP_KERNEL);
394 rmp_in = kvzalloc(inlen, GFP_KERNEL);
395 if (!rmp_out || !rmp_in) {
396 err = -ENOMEM;
397 goto out;
398 }
399
400 MLX5_SET(query_rmp_in, rmp_in, opcode, MLX5_CMD_OP_QUERY_RMP);
401 MLX5_SET(query_rmp_in, rmp_in, rmpn, srq->srqn);
402 err = mlx5_cmd_exec_inout(dev->mdev, query_rmp, rmp_in, rmp_out);
403 if (err)
404 goto out;
405
406 rmpc = MLX5_ADDR_OF(query_rmp_out, rmp_out, rmp_context);
407 get_wq(MLX5_ADDR_OF(rmpc, rmpc, wq), out);
408 if (MLX5_GET(rmpc, rmpc, state) != MLX5_RMPC_STATE_RDY)
409 out->flags |= MLX5_SRQ_FLAG_ERR;
410
411 out:
412 kvfree(rmp_out);
413 kvfree(rmp_in);
414 return err;
415 }
416
create_xrq_cmd(struct mlx5_ib_dev * dev,struct mlx5_core_srq * srq,struct mlx5_srq_attr * in)417 static int create_xrq_cmd(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq,
418 struct mlx5_srq_attr *in)
419 {
420 u32 create_out[MLX5_ST_SZ_DW(create_xrq_out)] = {0};
421 void *create_in;
422 void *xrqc;
423 void *wq;
424 int pas_size;
425 int inlen;
426 int err;
427
428 pas_size = get_pas_size(in);
429 inlen = MLX5_ST_SZ_BYTES(create_xrq_in) + pas_size;
430 create_in = kvzalloc(inlen, GFP_KERNEL);
431 if (!create_in)
432 return -ENOMEM;
433
434 xrqc = MLX5_ADDR_OF(create_xrq_in, create_in, xrq_context);
435 wq = MLX5_ADDR_OF(xrqc, xrqc, wq);
436
437 set_wq(wq, in);
438 memcpy(MLX5_ADDR_OF(xrqc, xrqc, wq.pas), in->pas, pas_size);
439
440 if (in->type == IB_SRQT_TM) {
441 MLX5_SET(xrqc, xrqc, topology, MLX5_XRQC_TOPOLOGY_TAG_MATCHING);
442 if (in->flags & MLX5_SRQ_FLAG_RNDV)
443 MLX5_SET(xrqc, xrqc, offload, MLX5_XRQC_OFFLOAD_RNDV);
444 MLX5_SET(xrqc, xrqc,
445 tag_matching_topology_context.log_matching_list_sz,
446 in->tm_log_list_size);
447 }
448 MLX5_SET(xrqc, xrqc, user_index, in->user_index);
449 MLX5_SET(xrqc, xrqc, cqn, in->cqn);
450 MLX5_SET(create_xrq_in, create_in, opcode, MLX5_CMD_OP_CREATE_XRQ);
451 MLX5_SET(create_xrq_in, create_in, uid, in->uid);
452 err = mlx5_cmd_exec(dev->mdev, create_in, inlen, create_out,
453 sizeof(create_out));
454 kvfree(create_in);
455 if (!err) {
456 srq->srqn = MLX5_GET(create_xrq_out, create_out, xrqn);
457 srq->uid = in->uid;
458 }
459
460 return err;
461 }
462
destroy_xrq_cmd(struct mlx5_ib_dev * dev,struct mlx5_core_srq * srq)463 static int destroy_xrq_cmd(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq)
464 {
465 u32 in[MLX5_ST_SZ_DW(destroy_xrq_in)] = {};
466
467 MLX5_SET(destroy_xrq_in, in, opcode, MLX5_CMD_OP_DESTROY_XRQ);
468 MLX5_SET(destroy_xrq_in, in, xrqn, srq->srqn);
469 MLX5_SET(destroy_xrq_in, in, uid, srq->uid);
470
471 return mlx5_cmd_exec_in(dev->mdev, destroy_xrq, in);
472 }
473
arm_xrq_cmd(struct mlx5_ib_dev * dev,struct mlx5_core_srq * srq,u16 lwm)474 static int arm_xrq_cmd(struct mlx5_ib_dev *dev,
475 struct mlx5_core_srq *srq,
476 u16 lwm)
477 {
478 u32 in[MLX5_ST_SZ_DW(arm_rq_in)] = {};
479
480 MLX5_SET(arm_rq_in, in, opcode, MLX5_CMD_OP_ARM_RQ);
481 MLX5_SET(arm_rq_in, in, op_mod, MLX5_ARM_RQ_IN_OP_MOD_XRQ);
482 MLX5_SET(arm_rq_in, in, srq_number, srq->srqn);
483 MLX5_SET(arm_rq_in, in, lwm, lwm);
484 MLX5_SET(arm_rq_in, in, uid, srq->uid);
485
486 return mlx5_cmd_exec_in(dev->mdev, arm_rq, in);
487 }
488
query_xrq_cmd(struct mlx5_ib_dev * dev,struct mlx5_core_srq * srq,struct mlx5_srq_attr * out)489 static int query_xrq_cmd(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq,
490 struct mlx5_srq_attr *out)
491 {
492 u32 in[MLX5_ST_SZ_DW(query_xrq_in)] = {};
493 u32 *xrq_out;
494 int outlen = MLX5_ST_SZ_BYTES(query_xrq_out);
495 void *xrqc;
496 int err;
497
498 xrq_out = kvzalloc(outlen, GFP_KERNEL);
499 if (!xrq_out)
500 return -ENOMEM;
501
502 MLX5_SET(query_xrq_in, in, opcode, MLX5_CMD_OP_QUERY_XRQ);
503 MLX5_SET(query_xrq_in, in, xrqn, srq->srqn);
504
505 err = mlx5_cmd_exec_inout(dev->mdev, query_xrq, in, xrq_out);
506 if (err)
507 goto out;
508
509 xrqc = MLX5_ADDR_OF(query_xrq_out, xrq_out, xrq_context);
510 get_wq(MLX5_ADDR_OF(xrqc, xrqc, wq), out);
511 if (MLX5_GET(xrqc, xrqc, state) != MLX5_XRQC_STATE_GOOD)
512 out->flags |= MLX5_SRQ_FLAG_ERR;
513 out->tm_next_tag =
514 MLX5_GET(xrqc, xrqc,
515 tag_matching_topology_context.append_next_index);
516 out->tm_hw_phase_cnt =
517 MLX5_GET(xrqc, xrqc,
518 tag_matching_topology_context.hw_phase_cnt);
519 out->tm_sw_phase_cnt =
520 MLX5_GET(xrqc, xrqc,
521 tag_matching_topology_context.sw_phase_cnt);
522
523 out:
524 kvfree(xrq_out);
525 return err;
526 }
527
create_srq_split(struct mlx5_ib_dev * dev,struct mlx5_core_srq * srq,struct mlx5_srq_attr * in)528 static int create_srq_split(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq,
529 struct mlx5_srq_attr *in)
530 {
531 if (!dev->mdev->issi)
532 return create_srq_cmd(dev, srq, in);
533 switch (srq->common.res) {
534 case MLX5_RES_XSRQ:
535 return create_xrc_srq_cmd(dev, srq, in);
536 case MLX5_RES_XRQ:
537 return create_xrq_cmd(dev, srq, in);
538 default:
539 return create_rmp_cmd(dev, srq, in);
540 }
541 }
542
destroy_srq_split(struct mlx5_ib_dev * dev,struct mlx5_core_srq * srq)543 static int destroy_srq_split(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq)
544 {
545 if (!dev->mdev->issi)
546 return destroy_srq_cmd(dev, srq);
547 switch (srq->common.res) {
548 case MLX5_RES_XSRQ:
549 return destroy_xrc_srq_cmd(dev, srq);
550 case MLX5_RES_XRQ:
551 return destroy_xrq_cmd(dev, srq);
552 default:
553 return destroy_rmp_cmd(dev, srq);
554 }
555 }
556
mlx5_cmd_create_srq(struct mlx5_ib_dev * dev,struct mlx5_core_srq * srq,struct mlx5_srq_attr * in)557 int mlx5_cmd_create_srq(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq,
558 struct mlx5_srq_attr *in)
559 {
560 struct mlx5_srq_table *table = &dev->srq_table;
561 int err;
562
563 switch (in->type) {
564 case IB_SRQT_XRC:
565 srq->common.res = MLX5_RES_XSRQ;
566 break;
567 case IB_SRQT_TM:
568 srq->common.res = MLX5_RES_XRQ;
569 break;
570 default:
571 srq->common.res = MLX5_RES_SRQ;
572 }
573
574 err = create_srq_split(dev, srq, in);
575 if (err)
576 return err;
577
578 refcount_set(&srq->common.refcount, 1);
579 init_completion(&srq->common.free);
580
581 err = xa_err(xa_store_irq(&table->array, srq->srqn, srq, GFP_KERNEL));
582 if (err)
583 goto err_destroy_srq_split;
584
585 return 0;
586
587 err_destroy_srq_split:
588 destroy_srq_split(dev, srq);
589
590 return err;
591 }
592
mlx5_cmd_destroy_srq(struct mlx5_ib_dev * dev,struct mlx5_core_srq * srq)593 int mlx5_cmd_destroy_srq(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq)
594 {
595 struct mlx5_srq_table *table = &dev->srq_table;
596 struct mlx5_core_srq *tmp;
597 int err;
598
599 /* Delete entry, but leave index occupied */
600 tmp = xa_cmpxchg_irq(&table->array, srq->srqn, srq, XA_ZERO_ENTRY, 0);
601 if (WARN_ON(tmp != srq))
602 return xa_err(tmp) ?: -EINVAL;
603
604 err = destroy_srq_split(dev, srq);
605 if (err) {
606 /*
607 * We don't need to check returned result for an error,
608 * because we are storing in pre-allocated space xarray
609 * entry and it can't fail at this stage.
610 */
611 xa_cmpxchg_irq(&table->array, srq->srqn, XA_ZERO_ENTRY, srq, 0);
612 return err;
613 }
614 xa_erase_irq(&table->array, srq->srqn);
615
616 mlx5_core_res_put(&srq->common);
617 wait_for_completion(&srq->common.free);
618 return 0;
619 }
620
mlx5_cmd_query_srq(struct mlx5_ib_dev * dev,struct mlx5_core_srq * srq,struct mlx5_srq_attr * out)621 int mlx5_cmd_query_srq(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq,
622 struct mlx5_srq_attr *out)
623 {
624 if (!dev->mdev->issi)
625 return query_srq_cmd(dev, srq, out);
626 switch (srq->common.res) {
627 case MLX5_RES_XSRQ:
628 return query_xrc_srq_cmd(dev, srq, out);
629 case MLX5_RES_XRQ:
630 return query_xrq_cmd(dev, srq, out);
631 default:
632 return query_rmp_cmd(dev, srq, out);
633 }
634 }
635
mlx5_cmd_arm_srq(struct mlx5_ib_dev * dev,struct mlx5_core_srq * srq,u16 lwm,int is_srq)636 int mlx5_cmd_arm_srq(struct mlx5_ib_dev *dev, struct mlx5_core_srq *srq,
637 u16 lwm, int is_srq)
638 {
639 if (!dev->mdev->issi)
640 return arm_srq_cmd(dev, srq, lwm, is_srq);
641 switch (srq->common.res) {
642 case MLX5_RES_XSRQ:
643 return arm_xrc_srq_cmd(dev, srq, lwm);
644 case MLX5_RES_XRQ:
645 return arm_xrq_cmd(dev, srq, lwm);
646 default:
647 return arm_rmp_cmd(dev, srq, lwm);
648 }
649 }
650
srq_event_notifier(struct notifier_block * nb,unsigned long type,void * data)651 static int srq_event_notifier(struct notifier_block *nb,
652 unsigned long type, void *data)
653 {
654 struct mlx5_srq_table *table;
655 struct mlx5_core_srq *srq;
656 struct mlx5_eqe *eqe;
657 u32 srqn;
658
659 if (type != MLX5_EVENT_TYPE_SRQ_CATAS_ERROR &&
660 type != MLX5_EVENT_TYPE_SRQ_RQ_LIMIT)
661 return NOTIFY_DONE;
662
663 table = container_of(nb, struct mlx5_srq_table, nb);
664
665 eqe = data;
666 srqn = be32_to_cpu(eqe->data.qp_srq.qp_srq_n) & 0xffffff;
667
668 xa_lock(&table->array);
669 srq = xa_load(&table->array, srqn);
670 if (srq)
671 refcount_inc(&srq->common.refcount);
672 xa_unlock(&table->array);
673
674 if (!srq)
675 return NOTIFY_OK;
676
677 srq->event(srq, eqe->type);
678
679 mlx5_core_res_put(&srq->common);
680
681 return NOTIFY_OK;
682 }
683
mlx5_init_srq_table(struct mlx5_ib_dev * dev)684 int mlx5_init_srq_table(struct mlx5_ib_dev *dev)
685 {
686 struct mlx5_srq_table *table = &dev->srq_table;
687
688 memset(table, 0, sizeof(*table));
689 xa_init_flags(&table->array, XA_FLAGS_LOCK_IRQ);
690
691 table->nb.notifier_call = srq_event_notifier;
692 mlx5_notifier_register(dev->mdev, &table->nb);
693
694 return 0;
695 }
696
mlx5_cleanup_srq_table(struct mlx5_ib_dev * dev)697 void mlx5_cleanup_srq_table(struct mlx5_ib_dev *dev)
698 {
699 struct mlx5_srq_table *table = &dev->srq_table;
700
701 mlx5_notifier_unregister(dev->mdev, &table->nb);
702 }
703
