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6#include <rdma/ib_user_verbs.h>
7#include <rdma/ib_verbs.h>
8#include <rdma/uverbs_types.h>
9#include <rdma/uverbs_ioctl.h>
10#include <rdma/mlx5_user_ioctl_cmds.h>
11#include <rdma/mlx5_user_ioctl_verbs.h>
12#include <rdma/ib_umem.h>
13#include <rdma/uverbs_std_types.h>
14#include <linux/mlx5/driver.h>
15#include <linux/mlx5/fs.h>
16#include "mlx5_ib.h"
17#include "devx.h"
18#include "qp.h"
19#include <linux/xarray.h>
20
21#define UVERBS_MODULE_NAME mlx5_ib
22#include <rdma/uverbs_named_ioctl.h>
23
24static void dispatch_event_fd(struct list_head *fd_list, const void *data);
25
26enum devx_obj_flags {
27 DEVX_OBJ_FLAGS_INDIRECT_MKEY = 1 << 0,
28 DEVX_OBJ_FLAGS_DCT = 1 << 1,
29 DEVX_OBJ_FLAGS_CQ = 1 << 2,
30};
31
32struct devx_async_data {
33 struct mlx5_ib_dev *mdev;
34 struct list_head list;
35 struct devx_async_cmd_event_file *ev_file;
36 struct mlx5_async_work cb_work;
37 u16 cmd_out_len;
38
39 struct mlx5_ib_uapi_devx_async_cmd_hdr hdr;
40};
41
42struct devx_async_event_data {
43 struct list_head list;
44 struct mlx5_ib_uapi_devx_async_event_hdr hdr;
45};
46
47
48struct devx_event {
49 struct xarray object_ids;
50 struct list_head unaffiliated_list;
51};
52
53
54struct devx_obj_event {
55 struct rcu_head rcu;
56 struct list_head obj_sub_list;
57};
58
59struct devx_event_subscription {
60 struct list_head file_list;
61
62
63 struct list_head xa_list;
64
65
66 struct list_head obj_list;
67 struct list_head event_list;
68
69
70
71 u8 is_cleaned:1;
72 u32 xa_key_level1;
73 u32 xa_key_level2;
74 struct rcu_head rcu;
75 u64 cookie;
76 struct devx_async_event_file *ev_file;
77 struct eventfd_ctx *eventfd;
78};
79
80struct devx_async_event_file {
81 struct ib_uobject uobj;
82
83 struct list_head subscribed_events_list;
84 spinlock_t lock;
85 wait_queue_head_t poll_wait;
86 struct list_head event_list;
87 struct mlx5_ib_dev *dev;
88 u8 omit_data:1;
89 u8 is_overflow_err:1;
90 u8 is_destroyed:1;
91};
92
93struct devx_umem {
94 struct mlx5_core_dev *mdev;
95 struct ib_umem *umem;
96 u32 dinlen;
97 u32 dinbox[MLX5_ST_SZ_DW(destroy_umem_in)];
98};
99
100struct devx_umem_reg_cmd {
101 void *in;
102 u32 inlen;
103 u32 out[MLX5_ST_SZ_DW(create_umem_out)];
104};
105
106static struct mlx5_ib_ucontext *
107devx_ufile2uctx(const struct uverbs_attr_bundle *attrs)
108{
109 return to_mucontext(ib_uverbs_get_ucontext(attrs));
110}
111
112int mlx5_ib_devx_create(struct mlx5_ib_dev *dev, bool is_user)
113{
114 u32 in[MLX5_ST_SZ_DW(create_uctx_in)] = {};
115 u32 out[MLX5_ST_SZ_DW(create_uctx_out)] = {};
116 void *uctx;
117 int err;
118 u16 uid;
119 u32 cap = 0;
120
121
122 if (!MLX5_CAP_GEN(dev->mdev, log_max_uctx))
123 return -EINVAL;
124
125 uctx = MLX5_ADDR_OF(create_uctx_in, in, uctx);
126 if (is_user && capable(CAP_NET_RAW) &&
127 (MLX5_CAP_GEN(dev->mdev, uctx_cap) & MLX5_UCTX_CAP_RAW_TX))
128 cap |= MLX5_UCTX_CAP_RAW_TX;
129 if (is_user && capable(CAP_SYS_RAWIO) &&
130 (MLX5_CAP_GEN(dev->mdev, uctx_cap) &
131 MLX5_UCTX_CAP_INTERNAL_DEV_RES))
132 cap |= MLX5_UCTX_CAP_INTERNAL_DEV_RES;
133
134 MLX5_SET(create_uctx_in, in, opcode, MLX5_CMD_OP_CREATE_UCTX);
135 MLX5_SET(uctx, uctx, cap, cap);
136
137 err = mlx5_cmd_exec(dev->mdev, in, sizeof(in), out, sizeof(out));
138 if (err)
139 return err;
140
141 uid = MLX5_GET(create_uctx_out, out, uid);
142 return uid;
143}
144
145void mlx5_ib_devx_destroy(struct mlx5_ib_dev *dev, u16 uid)
146{
147 u32 in[MLX5_ST_SZ_DW(destroy_uctx_in)] = {};
148 u32 out[MLX5_ST_SZ_DW(destroy_uctx_out)] = {};
149
150 MLX5_SET(destroy_uctx_in, in, opcode, MLX5_CMD_OP_DESTROY_UCTX);
151 MLX5_SET(destroy_uctx_in, in, uid, uid);
152
153 mlx5_cmd_exec(dev->mdev, in, sizeof(in), out, sizeof(out));
154}
155
156static bool is_legacy_unaffiliated_event_num(u16 event_num)
157{
158 switch (event_num) {
159 case MLX5_EVENT_TYPE_PORT_CHANGE:
160 return true;
161 default:
162 return false;
163 }
164}
165
166static bool is_legacy_obj_event_num(u16 event_num)
167{
168 switch (event_num) {
169 case MLX5_EVENT_TYPE_PATH_MIG:
170 case MLX5_EVENT_TYPE_COMM_EST:
171 case MLX5_EVENT_TYPE_SQ_DRAINED:
172 case MLX5_EVENT_TYPE_SRQ_LAST_WQE:
173 case MLX5_EVENT_TYPE_SRQ_RQ_LIMIT:
174 case MLX5_EVENT_TYPE_CQ_ERROR:
175 case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
176 case MLX5_EVENT_TYPE_PATH_MIG_FAILED:
177 case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
178 case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR:
179 case MLX5_EVENT_TYPE_SRQ_CATAS_ERROR:
180 case MLX5_EVENT_TYPE_DCT_DRAINED:
181 case MLX5_EVENT_TYPE_COMP:
182 case MLX5_EVENT_TYPE_DCT_KEY_VIOLATION:
183 case MLX5_EVENT_TYPE_XRQ_ERROR:
184 return true;
185 default:
186 return false;
187 }
188}
189
190static u16 get_legacy_obj_type(u16 opcode)
191{
192 switch (opcode) {
193 case MLX5_CMD_OP_CREATE_RQ:
194 return MLX5_EVENT_QUEUE_TYPE_RQ;
195 case MLX5_CMD_OP_CREATE_QP:
196 return MLX5_EVENT_QUEUE_TYPE_QP;
197 case MLX5_CMD_OP_CREATE_SQ:
198 return MLX5_EVENT_QUEUE_TYPE_SQ;
199 case MLX5_CMD_OP_CREATE_DCT:
200 return MLX5_EVENT_QUEUE_TYPE_DCT;
201 default:
202 return 0;
203 }
204}
205
206static u16 get_dec_obj_type(struct devx_obj *obj, u16 event_num)
207{
208 u16 opcode;
209
210 opcode = (obj->obj_id >> 32) & 0xffff;
211
212 if (is_legacy_obj_event_num(event_num))
213 return get_legacy_obj_type(opcode);
214
215 switch (opcode) {
216 case MLX5_CMD_OP_CREATE_GENERAL_OBJECT:
217 return (obj->obj_id >> 48);
218 case MLX5_CMD_OP_CREATE_RQ:
219 return MLX5_OBJ_TYPE_RQ;
220 case MLX5_CMD_OP_CREATE_QP:
221 return MLX5_OBJ_TYPE_QP;
222 case MLX5_CMD_OP_CREATE_SQ:
223 return MLX5_OBJ_TYPE_SQ;
224 case MLX5_CMD_OP_CREATE_DCT:
225 return MLX5_OBJ_TYPE_DCT;
226 case MLX5_CMD_OP_CREATE_TIR:
227 return MLX5_OBJ_TYPE_TIR;
228 case MLX5_CMD_OP_CREATE_TIS:
229 return MLX5_OBJ_TYPE_TIS;
230 case MLX5_CMD_OP_CREATE_PSV:
231 return MLX5_OBJ_TYPE_PSV;
232 case MLX5_OBJ_TYPE_MKEY:
233 return MLX5_OBJ_TYPE_MKEY;
234 case MLX5_CMD_OP_CREATE_RMP:
235 return MLX5_OBJ_TYPE_RMP;
236 case MLX5_CMD_OP_CREATE_XRC_SRQ:
237 return MLX5_OBJ_TYPE_XRC_SRQ;
238 case MLX5_CMD_OP_CREATE_XRQ:
239 return MLX5_OBJ_TYPE_XRQ;
240 case MLX5_CMD_OP_CREATE_RQT:
241 return MLX5_OBJ_TYPE_RQT;
242 case MLX5_CMD_OP_ALLOC_FLOW_COUNTER:
243 return MLX5_OBJ_TYPE_FLOW_COUNTER;
244 case MLX5_CMD_OP_CREATE_CQ:
245 return MLX5_OBJ_TYPE_CQ;
246 default:
247 return 0;
248 }
249}
250
251static u16 get_event_obj_type(unsigned long event_type, struct mlx5_eqe *eqe)
252{
253 switch (event_type) {
254 case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
255 case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR:
256 case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
257 case MLX5_EVENT_TYPE_SRQ_LAST_WQE:
258 case MLX5_EVENT_TYPE_PATH_MIG:
259 case MLX5_EVENT_TYPE_PATH_MIG_FAILED:
260 case MLX5_EVENT_TYPE_COMM_EST:
261 case MLX5_EVENT_TYPE_SQ_DRAINED:
262 case MLX5_EVENT_TYPE_SRQ_RQ_LIMIT:
263 case MLX5_EVENT_TYPE_SRQ_CATAS_ERROR:
264 return eqe->data.qp_srq.type;
265 case MLX5_EVENT_TYPE_CQ_ERROR:
266 case MLX5_EVENT_TYPE_XRQ_ERROR:
267 return 0;
268 case MLX5_EVENT_TYPE_DCT_DRAINED:
269 case MLX5_EVENT_TYPE_DCT_KEY_VIOLATION:
270 return MLX5_EVENT_QUEUE_TYPE_DCT;
271 default:
272 return MLX5_GET(affiliated_event_header, &eqe->data, obj_type);
273 }
274}
275
276static u32 get_dec_obj_id(u64 obj_id)
277{
278 return (obj_id & 0xffffffff);
279}
280
281
282
283
284
285
286static u64 get_enc_obj_id(u32 opcode, u32 obj_id)
287{
288 return ((u64)opcode << 32) | obj_id;
289}
290
291static u32 devx_get_created_obj_id(const void *in, const void *out, u16 opcode)
292{
293 switch (opcode) {
294 case MLX5_CMD_OP_CREATE_GENERAL_OBJECT:
295 return MLX5_GET(general_obj_out_cmd_hdr, out, obj_id);
296 case MLX5_CMD_OP_CREATE_UMEM:
297 return MLX5_GET(create_umem_out, out, umem_id);
298 case MLX5_CMD_OP_CREATE_MKEY:
299 return MLX5_GET(create_mkey_out, out, mkey_index);
300 case MLX5_CMD_OP_CREATE_CQ:
301 return MLX5_GET(create_cq_out, out, cqn);
302 case MLX5_CMD_OP_ALLOC_PD:
303 return MLX5_GET(alloc_pd_out, out, pd);
304 case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN:
305 return MLX5_GET(alloc_transport_domain_out, out,
306 transport_domain);
307 case MLX5_CMD_OP_CREATE_RMP:
308 return MLX5_GET(create_rmp_out, out, rmpn);
309 case MLX5_CMD_OP_CREATE_SQ:
310 return MLX5_GET(create_sq_out, out, sqn);
311 case MLX5_CMD_OP_CREATE_RQ:
312 return MLX5_GET(create_rq_out, out, rqn);
313 case MLX5_CMD_OP_CREATE_RQT:
314 return MLX5_GET(create_rqt_out, out, rqtn);
315 case MLX5_CMD_OP_CREATE_TIR:
316 return MLX5_GET(create_tir_out, out, tirn);
317 case MLX5_CMD_OP_CREATE_TIS:
318 return MLX5_GET(create_tis_out, out, tisn);
319 case MLX5_CMD_OP_ALLOC_Q_COUNTER:
320 return MLX5_GET(alloc_q_counter_out, out, counter_set_id);
321 case MLX5_CMD_OP_CREATE_FLOW_TABLE:
322 return MLX5_GET(create_flow_table_out, out, table_id);
323 case MLX5_CMD_OP_CREATE_FLOW_GROUP:
324 return MLX5_GET(create_flow_group_out, out, group_id);
325 case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY:
326 return MLX5_GET(set_fte_in, in, flow_index);
327 case MLX5_CMD_OP_ALLOC_FLOW_COUNTER:
328 return MLX5_GET(alloc_flow_counter_out, out, flow_counter_id);
329 case MLX5_CMD_OP_ALLOC_PACKET_REFORMAT_CONTEXT:
330 return MLX5_GET(alloc_packet_reformat_context_out, out,
331 packet_reformat_id);
332 case MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT:
333 return MLX5_GET(alloc_modify_header_context_out, out,
334 modify_header_id);
335 case MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT:
336 return MLX5_GET(create_scheduling_element_out, out,
337 scheduling_element_id);
338 case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT:
339 return MLX5_GET(add_vxlan_udp_dport_in, in, vxlan_udp_port);
340 case MLX5_CMD_OP_SET_L2_TABLE_ENTRY:
341 return MLX5_GET(set_l2_table_entry_in, in, table_index);
342 case MLX5_CMD_OP_CREATE_QP:
343 return MLX5_GET(create_qp_out, out, qpn);
344 case MLX5_CMD_OP_CREATE_SRQ:
345 return MLX5_GET(create_srq_out, out, srqn);
346 case MLX5_CMD_OP_CREATE_XRC_SRQ:
347 return MLX5_GET(create_xrc_srq_out, out, xrc_srqn);
348 case MLX5_CMD_OP_CREATE_DCT:
349 return MLX5_GET(create_dct_out, out, dctn);
350 case MLX5_CMD_OP_CREATE_XRQ:
351 return MLX5_GET(create_xrq_out, out, xrqn);
352 case MLX5_CMD_OP_ATTACH_TO_MCG:
353 return MLX5_GET(attach_to_mcg_in, in, qpn);
354 case MLX5_CMD_OP_ALLOC_XRCD:
355 return MLX5_GET(alloc_xrcd_out, out, xrcd);
356 case MLX5_CMD_OP_CREATE_PSV:
357 return MLX5_GET(create_psv_out, out, psv0_index);
358 default:
359
360 WARN_ON(true);
361 return 0;
362 }
363}
364
365static u64 devx_get_obj_id(const void *in)
366{
367 u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode);
368 u64 obj_id;
369
370 switch (opcode) {
371 case MLX5_CMD_OP_MODIFY_GENERAL_OBJECT:
372 case MLX5_CMD_OP_QUERY_GENERAL_OBJECT:
373 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_GENERAL_OBJECT |
374 MLX5_GET(general_obj_in_cmd_hdr, in,
375 obj_type) << 16,
376 MLX5_GET(general_obj_in_cmd_hdr, in,
377 obj_id));
378 break;
379 case MLX5_CMD_OP_QUERY_MKEY:
380 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_MKEY,
381 MLX5_GET(query_mkey_in, in,
382 mkey_index));
383 break;
384 case MLX5_CMD_OP_QUERY_CQ:
385 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_CQ,
386 MLX5_GET(query_cq_in, in, cqn));
387 break;
388 case MLX5_CMD_OP_MODIFY_CQ:
389 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_CQ,
390 MLX5_GET(modify_cq_in, in, cqn));
391 break;
392 case MLX5_CMD_OP_QUERY_SQ:
393 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SQ,
394 MLX5_GET(query_sq_in, in, sqn));
395 break;
396 case MLX5_CMD_OP_MODIFY_SQ:
397 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SQ,
398 MLX5_GET(modify_sq_in, in, sqn));
399 break;
400 case MLX5_CMD_OP_QUERY_RQ:
401 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ,
402 MLX5_GET(query_rq_in, in, rqn));
403 break;
404 case MLX5_CMD_OP_MODIFY_RQ:
405 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ,
406 MLX5_GET(modify_rq_in, in, rqn));
407 break;
408 case MLX5_CMD_OP_QUERY_RMP:
409 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RMP,
410 MLX5_GET(query_rmp_in, in, rmpn));
411 break;
412 case MLX5_CMD_OP_MODIFY_RMP:
413 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RMP,
414 MLX5_GET(modify_rmp_in, in, rmpn));
415 break;
416 case MLX5_CMD_OP_QUERY_RQT:
417 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQT,
418 MLX5_GET(query_rqt_in, in, rqtn));
419 break;
420 case MLX5_CMD_OP_MODIFY_RQT:
421 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQT,
422 MLX5_GET(modify_rqt_in, in, rqtn));
423 break;
424 case MLX5_CMD_OP_QUERY_TIR:
425 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_TIR,
426 MLX5_GET(query_tir_in, in, tirn));
427 break;
428 case MLX5_CMD_OP_MODIFY_TIR:
429 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_TIR,
430 MLX5_GET(modify_tir_in, in, tirn));
431 break;
432 case MLX5_CMD_OP_QUERY_TIS:
433 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_TIS,
434 MLX5_GET(query_tis_in, in, tisn));
435 break;
436 case MLX5_CMD_OP_MODIFY_TIS:
437 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_TIS,
438 MLX5_GET(modify_tis_in, in, tisn));
439 break;
440 case MLX5_CMD_OP_QUERY_FLOW_TABLE:
441 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_FLOW_TABLE,
442 MLX5_GET(query_flow_table_in, in,
443 table_id));
444 break;
445 case MLX5_CMD_OP_MODIFY_FLOW_TABLE:
446 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_FLOW_TABLE,
447 MLX5_GET(modify_flow_table_in, in,
448 table_id));
449 break;
450 case MLX5_CMD_OP_QUERY_FLOW_GROUP:
451 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_FLOW_GROUP,
452 MLX5_GET(query_flow_group_in, in,
453 group_id));
454 break;
455 case MLX5_CMD_OP_QUERY_FLOW_TABLE_ENTRY:
456 obj_id = get_enc_obj_id(MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY,
457 MLX5_GET(query_fte_in, in,
458 flow_index));
459 break;
460 case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY:
461 obj_id = get_enc_obj_id(MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY,
462 MLX5_GET(set_fte_in, in, flow_index));
463 break;
464 case MLX5_CMD_OP_QUERY_Q_COUNTER:
465 obj_id = get_enc_obj_id(MLX5_CMD_OP_ALLOC_Q_COUNTER,
466 MLX5_GET(query_q_counter_in, in,
467 counter_set_id));
468 break;
469 case MLX5_CMD_OP_QUERY_FLOW_COUNTER:
470 obj_id = get_enc_obj_id(MLX5_CMD_OP_ALLOC_FLOW_COUNTER,
471 MLX5_GET(query_flow_counter_in, in,
472 flow_counter_id));
473 break;
474 case MLX5_CMD_OP_QUERY_MODIFY_HEADER_CONTEXT:
475 obj_id = get_enc_obj_id(MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT,
476 MLX5_GET(query_modify_header_context_in,
477 in, modify_header_id));
478 break;
479 case MLX5_CMD_OP_QUERY_SCHEDULING_ELEMENT:
480 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT,
481 MLX5_GET(query_scheduling_element_in,
482 in, scheduling_element_id));
483 break;
484 case MLX5_CMD_OP_MODIFY_SCHEDULING_ELEMENT:
485 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT,
486 MLX5_GET(modify_scheduling_element_in,
487 in, scheduling_element_id));
488 break;
489 case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT:
490 obj_id = get_enc_obj_id(MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT,
491 MLX5_GET(add_vxlan_udp_dport_in, in,
492 vxlan_udp_port));
493 break;
494 case MLX5_CMD_OP_QUERY_L2_TABLE_ENTRY:
495 obj_id = get_enc_obj_id(MLX5_CMD_OP_SET_L2_TABLE_ENTRY,
496 MLX5_GET(query_l2_table_entry_in, in,
497 table_index));
498 break;
499 case MLX5_CMD_OP_SET_L2_TABLE_ENTRY:
500 obj_id = get_enc_obj_id(MLX5_CMD_OP_SET_L2_TABLE_ENTRY,
501 MLX5_GET(set_l2_table_entry_in, in,
502 table_index));
503 break;
504 case MLX5_CMD_OP_QUERY_QP:
505 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP,
506 MLX5_GET(query_qp_in, in, qpn));
507 break;
508 case MLX5_CMD_OP_RST2INIT_QP:
509 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP,
510 MLX5_GET(rst2init_qp_in, in, qpn));
511 break;
512 case MLX5_CMD_OP_INIT2INIT_QP:
513 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP,
514 MLX5_GET(init2init_qp_in, in, qpn));
515 break;
516 case MLX5_CMD_OP_INIT2RTR_QP:
517 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP,
518 MLX5_GET(init2rtr_qp_in, in, qpn));
519 break;
520 case MLX5_CMD_OP_RTR2RTS_QP:
521 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP,
522 MLX5_GET(rtr2rts_qp_in, in, qpn));
523 break;
524 case MLX5_CMD_OP_RTS2RTS_QP:
525 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP,
526 MLX5_GET(rts2rts_qp_in, in, qpn));
527 break;
528 case MLX5_CMD_OP_SQERR2RTS_QP:
529 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP,
530 MLX5_GET(sqerr2rts_qp_in, in, qpn));
531 break;
532 case MLX5_CMD_OP_2ERR_QP:
533 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP,
534 MLX5_GET(qp_2err_in, in, qpn));
535 break;
536 case MLX5_CMD_OP_2RST_QP:
537 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_QP,
538 MLX5_GET(qp_2rst_in, in, qpn));
539 break;
540 case MLX5_CMD_OP_QUERY_DCT:
541 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_DCT,
542 MLX5_GET(query_dct_in, in, dctn));
543 break;
544 case MLX5_CMD_OP_QUERY_XRQ:
545 case MLX5_CMD_OP_QUERY_XRQ_DC_PARAMS_ENTRY:
546 case MLX5_CMD_OP_QUERY_XRQ_ERROR_PARAMS:
547 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_XRQ,
548 MLX5_GET(query_xrq_in, in, xrqn));
549 break;
550 case MLX5_CMD_OP_QUERY_XRC_SRQ:
551 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_XRC_SRQ,
552 MLX5_GET(query_xrc_srq_in, in,
553 xrc_srqn));
554 break;
555 case MLX5_CMD_OP_ARM_XRC_SRQ:
556 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_XRC_SRQ,
557 MLX5_GET(arm_xrc_srq_in, in, xrc_srqn));
558 break;
559 case MLX5_CMD_OP_QUERY_SRQ:
560 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_SRQ,
561 MLX5_GET(query_srq_in, in, srqn));
562 break;
563 case MLX5_CMD_OP_ARM_RQ:
564 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ,
565 MLX5_GET(arm_rq_in, in, srq_number));
566 break;
567 case MLX5_CMD_OP_ARM_DCT_FOR_KEY_VIOLATION:
568 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_DCT,
569 MLX5_GET(drain_dct_in, in, dctn));
570 break;
571 case MLX5_CMD_OP_ARM_XRQ:
572 case MLX5_CMD_OP_SET_XRQ_DC_PARAMS_ENTRY:
573 case MLX5_CMD_OP_RELEASE_XRQ_ERROR:
574 case MLX5_CMD_OP_MODIFY_XRQ:
575 obj_id = get_enc_obj_id(MLX5_CMD_OP_CREATE_XRQ,
576 MLX5_GET(arm_xrq_in, in, xrqn));
577 break;
578 case MLX5_CMD_OP_QUERY_PACKET_REFORMAT_CONTEXT:
579 obj_id = get_enc_obj_id
580 (MLX5_CMD_OP_ALLOC_PACKET_REFORMAT_CONTEXT,
581 MLX5_GET(query_packet_reformat_context_in,
582 in, packet_reformat_id));
583 break;
584 default:
585 obj_id = 0;
586 }
587
588 return obj_id;
589}
590
591static bool devx_is_valid_obj_id(struct uverbs_attr_bundle *attrs,
592 struct ib_uobject *uobj, const void *in)
593{
594 struct mlx5_ib_dev *dev = mlx5_udata_to_mdev(&attrs->driver_udata);
595 u64 obj_id = devx_get_obj_id(in);
596
597 if (!obj_id)
598 return false;
599
600 switch (uobj_get_object_id(uobj)) {
601 case UVERBS_OBJECT_CQ:
602 return get_enc_obj_id(MLX5_CMD_OP_CREATE_CQ,
603 to_mcq(uobj->object)->mcq.cqn) ==
604 obj_id;
605
606 case UVERBS_OBJECT_SRQ:
607 {
608 struct mlx5_core_srq *srq = &(to_msrq(uobj->object)->msrq);
609 u16 opcode;
610
611 switch (srq->common.res) {
612 case MLX5_RES_XSRQ:
613 opcode = MLX5_CMD_OP_CREATE_XRC_SRQ;
614 break;
615 case MLX5_RES_XRQ:
616 opcode = MLX5_CMD_OP_CREATE_XRQ;
617 break;
618 default:
619 if (!dev->mdev->issi)
620 opcode = MLX5_CMD_OP_CREATE_SRQ;
621 else
622 opcode = MLX5_CMD_OP_CREATE_RMP;
623 }
624
625 return get_enc_obj_id(opcode,
626 to_msrq(uobj->object)->msrq.srqn) ==
627 obj_id;
628 }
629
630 case UVERBS_OBJECT_QP:
631 {
632 struct mlx5_ib_qp *qp = to_mqp(uobj->object);
633
634 if (qp->type == IB_QPT_RAW_PACKET ||
635 (qp->flags & IB_QP_CREATE_SOURCE_QPN)) {
636 struct mlx5_ib_raw_packet_qp *raw_packet_qp =
637 &qp->raw_packet_qp;
638 struct mlx5_ib_rq *rq = &raw_packet_qp->rq;
639 struct mlx5_ib_sq *sq = &raw_packet_qp->sq;
640
641 return (get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ,
642 rq->base.mqp.qpn) == obj_id ||
643 get_enc_obj_id(MLX5_CMD_OP_CREATE_SQ,
644 sq->base.mqp.qpn) == obj_id ||
645 get_enc_obj_id(MLX5_CMD_OP_CREATE_TIR,
646 rq->tirn) == obj_id ||
647 get_enc_obj_id(MLX5_CMD_OP_CREATE_TIS,
648 sq->tisn) == obj_id);
649 }
650
651 if (qp->type == MLX5_IB_QPT_DCT)
652 return get_enc_obj_id(MLX5_CMD_OP_CREATE_DCT,
653 qp->dct.mdct.mqp.qpn) == obj_id;
654 return get_enc_obj_id(MLX5_CMD_OP_CREATE_QP,
655 qp->ibqp.qp_num) == obj_id;
656 }
657
658 case UVERBS_OBJECT_WQ:
659 return get_enc_obj_id(MLX5_CMD_OP_CREATE_RQ,
660 to_mrwq(uobj->object)->core_qp.qpn) ==
661 obj_id;
662
663 case UVERBS_OBJECT_RWQ_IND_TBL:
664 return get_enc_obj_id(MLX5_CMD_OP_CREATE_RQT,
665 to_mrwq_ind_table(uobj->object)->rqtn) ==
666 obj_id;
667
668 case MLX5_IB_OBJECT_DEVX_OBJ:
669 return ((struct devx_obj *)uobj->object)->obj_id == obj_id;
670
671 default:
672 return false;
673 }
674}
675
676static void devx_set_umem_valid(const void *in)
677{
678 u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode);
679
680 switch (opcode) {
681 case MLX5_CMD_OP_CREATE_MKEY:
682 MLX5_SET(create_mkey_in, in, mkey_umem_valid, 1);
683 break;
684 case MLX5_CMD_OP_CREATE_CQ:
685 {
686 void *cqc;
687
688 MLX5_SET(create_cq_in, in, cq_umem_valid, 1);
689 cqc = MLX5_ADDR_OF(create_cq_in, in, cq_context);
690 MLX5_SET(cqc, cqc, dbr_umem_valid, 1);
691 break;
692 }
693 case MLX5_CMD_OP_CREATE_QP:
694 {
695 void *qpc;
696
697 qpc = MLX5_ADDR_OF(create_qp_in, in, qpc);
698 MLX5_SET(qpc, qpc, dbr_umem_valid, 1);
699 MLX5_SET(create_qp_in, in, wq_umem_valid, 1);
700 break;
701 }
702
703 case MLX5_CMD_OP_CREATE_RQ:
704 {
705 void *rqc, *wq;
706
707 rqc = MLX5_ADDR_OF(create_rq_in, in, ctx);
708 wq = MLX5_ADDR_OF(rqc, rqc, wq);
709 MLX5_SET(wq, wq, dbr_umem_valid, 1);
710 MLX5_SET(wq, wq, wq_umem_valid, 1);
711 break;
712 }
713
714 case MLX5_CMD_OP_CREATE_SQ:
715 {
716 void *sqc, *wq;
717
718 sqc = MLX5_ADDR_OF(create_sq_in, in, ctx);
719 wq = MLX5_ADDR_OF(sqc, sqc, wq);
720 MLX5_SET(wq, wq, dbr_umem_valid, 1);
721 MLX5_SET(wq, wq, wq_umem_valid, 1);
722 break;
723 }
724
725 case MLX5_CMD_OP_MODIFY_CQ:
726 MLX5_SET(modify_cq_in, in, cq_umem_valid, 1);
727 break;
728
729 case MLX5_CMD_OP_CREATE_RMP:
730 {
731 void *rmpc, *wq;
732
733 rmpc = MLX5_ADDR_OF(create_rmp_in, in, ctx);
734 wq = MLX5_ADDR_OF(rmpc, rmpc, wq);
735 MLX5_SET(wq, wq, dbr_umem_valid, 1);
736 MLX5_SET(wq, wq, wq_umem_valid, 1);
737 break;
738 }
739
740 case MLX5_CMD_OP_CREATE_XRQ:
741 {
742 void *xrqc, *wq;
743
744 xrqc = MLX5_ADDR_OF(create_xrq_in, in, xrq_context);
745 wq = MLX5_ADDR_OF(xrqc, xrqc, wq);
746 MLX5_SET(wq, wq, dbr_umem_valid, 1);
747 MLX5_SET(wq, wq, wq_umem_valid, 1);
748 break;
749 }
750
751 case MLX5_CMD_OP_CREATE_XRC_SRQ:
752 {
753 void *xrc_srqc;
754
755 MLX5_SET(create_xrc_srq_in, in, xrc_srq_umem_valid, 1);
756 xrc_srqc = MLX5_ADDR_OF(create_xrc_srq_in, in,
757 xrc_srq_context_entry);
758 MLX5_SET(xrc_srqc, xrc_srqc, dbr_umem_valid, 1);
759 break;
760 }
761
762 default:
763 return;
764 }
765}
766
767static bool devx_is_obj_create_cmd(const void *in, u16 *opcode)
768{
769 *opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode);
770
771 switch (*opcode) {
772 case MLX5_CMD_OP_CREATE_GENERAL_OBJECT:
773 case MLX5_CMD_OP_CREATE_MKEY:
774 case MLX5_CMD_OP_CREATE_CQ:
775 case MLX5_CMD_OP_ALLOC_PD:
776 case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN:
777 case MLX5_CMD_OP_CREATE_RMP:
778 case MLX5_CMD_OP_CREATE_SQ:
779 case MLX5_CMD_OP_CREATE_RQ:
780 case MLX5_CMD_OP_CREATE_RQT:
781 case MLX5_CMD_OP_CREATE_TIR:
782 case MLX5_CMD_OP_CREATE_TIS:
783 case MLX5_CMD_OP_ALLOC_Q_COUNTER:
784 case MLX5_CMD_OP_CREATE_FLOW_TABLE:
785 case MLX5_CMD_OP_CREATE_FLOW_GROUP:
786 case MLX5_CMD_OP_ALLOC_FLOW_COUNTER:
787 case MLX5_CMD_OP_ALLOC_PACKET_REFORMAT_CONTEXT:
788 case MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT:
789 case MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT:
790 case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT:
791 case MLX5_CMD_OP_SET_L2_TABLE_ENTRY:
792 case MLX5_CMD_OP_CREATE_QP:
793 case MLX5_CMD_OP_CREATE_SRQ:
794 case MLX5_CMD_OP_CREATE_XRC_SRQ:
795 case MLX5_CMD_OP_CREATE_DCT:
796 case MLX5_CMD_OP_CREATE_XRQ:
797 case MLX5_CMD_OP_ATTACH_TO_MCG:
798 case MLX5_CMD_OP_ALLOC_XRCD:
799 return true;
800 case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY:
801 {
802 u16 op_mod = MLX5_GET(set_fte_in, in, op_mod);
803 if (op_mod == 0)
804 return true;
805 return false;
806 }
807 case MLX5_CMD_OP_CREATE_PSV:
808 {
809 u8 num_psv = MLX5_GET(create_psv_in, in, num_psv);
810
811 if (num_psv == 1)
812 return true;
813 return false;
814 }
815 default:
816 return false;
817 }
818}
819
820static bool devx_is_obj_modify_cmd(const void *in)
821{
822 u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode);
823
824 switch (opcode) {
825 case MLX5_CMD_OP_MODIFY_GENERAL_OBJECT:
826 case MLX5_CMD_OP_MODIFY_CQ:
827 case MLX5_CMD_OP_MODIFY_RMP:
828 case MLX5_CMD_OP_MODIFY_SQ:
829 case MLX5_CMD_OP_MODIFY_RQ:
830 case MLX5_CMD_OP_MODIFY_RQT:
831 case MLX5_CMD_OP_MODIFY_TIR:
832 case MLX5_CMD_OP_MODIFY_TIS:
833 case MLX5_CMD_OP_MODIFY_FLOW_TABLE:
834 case MLX5_CMD_OP_MODIFY_SCHEDULING_ELEMENT:
835 case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT:
836 case MLX5_CMD_OP_SET_L2_TABLE_ENTRY:
837 case MLX5_CMD_OP_RST2INIT_QP:
838 case MLX5_CMD_OP_INIT2RTR_QP:
839 case MLX5_CMD_OP_INIT2INIT_QP:
840 case MLX5_CMD_OP_RTR2RTS_QP:
841 case MLX5_CMD_OP_RTS2RTS_QP:
842 case MLX5_CMD_OP_SQERR2RTS_QP:
843 case MLX5_CMD_OP_2ERR_QP:
844 case MLX5_CMD_OP_2RST_QP:
845 case MLX5_CMD_OP_ARM_XRC_SRQ:
846 case MLX5_CMD_OP_ARM_RQ:
847 case MLX5_CMD_OP_ARM_DCT_FOR_KEY_VIOLATION:
848 case MLX5_CMD_OP_ARM_XRQ:
849 case MLX5_CMD_OP_SET_XRQ_DC_PARAMS_ENTRY:
850 case MLX5_CMD_OP_RELEASE_XRQ_ERROR:
851 case MLX5_CMD_OP_MODIFY_XRQ:
852 return true;
853 case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY:
854 {
855 u16 op_mod = MLX5_GET(set_fte_in, in, op_mod);
856
857 if (op_mod == 1)
858 return true;
859 return false;
860 }
861 default:
862 return false;
863 }
864}
865
866static bool devx_is_obj_query_cmd(const void *in)
867{
868 u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode);
869
870 switch (opcode) {
871 case MLX5_CMD_OP_QUERY_GENERAL_OBJECT:
872 case MLX5_CMD_OP_QUERY_MKEY:
873 case MLX5_CMD_OP_QUERY_CQ:
874 case MLX5_CMD_OP_QUERY_RMP:
875 case MLX5_CMD_OP_QUERY_SQ:
876 case MLX5_CMD_OP_QUERY_RQ:
877 case MLX5_CMD_OP_QUERY_RQT:
878 case MLX5_CMD_OP_QUERY_TIR:
879 case MLX5_CMD_OP_QUERY_TIS:
880 case MLX5_CMD_OP_QUERY_Q_COUNTER:
881 case MLX5_CMD_OP_QUERY_FLOW_TABLE:
882 case MLX5_CMD_OP_QUERY_FLOW_GROUP:
883 case MLX5_CMD_OP_QUERY_FLOW_TABLE_ENTRY:
884 case MLX5_CMD_OP_QUERY_FLOW_COUNTER:
885 case MLX5_CMD_OP_QUERY_MODIFY_HEADER_CONTEXT:
886 case MLX5_CMD_OP_QUERY_SCHEDULING_ELEMENT:
887 case MLX5_CMD_OP_QUERY_L2_TABLE_ENTRY:
888 case MLX5_CMD_OP_QUERY_QP:
889 case MLX5_CMD_OP_QUERY_SRQ:
890 case MLX5_CMD_OP_QUERY_XRC_SRQ:
891 case MLX5_CMD_OP_QUERY_DCT:
892 case MLX5_CMD_OP_QUERY_XRQ:
893 case MLX5_CMD_OP_QUERY_XRQ_DC_PARAMS_ENTRY:
894 case MLX5_CMD_OP_QUERY_XRQ_ERROR_PARAMS:
895 case MLX5_CMD_OP_QUERY_PACKET_REFORMAT_CONTEXT:
896 return true;
897 default:
898 return false;
899 }
900}
901
902static bool devx_is_whitelist_cmd(void *in)
903{
904 u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode);
905
906 switch (opcode) {
907 case MLX5_CMD_OP_QUERY_HCA_CAP:
908 case MLX5_CMD_OP_QUERY_HCA_VPORT_CONTEXT:
909 case MLX5_CMD_OP_QUERY_ESW_VPORT_CONTEXT:
910 return true;
911 default:
912 return false;
913 }
914}
915
916static int devx_get_uid(struct mlx5_ib_ucontext *c, void *cmd_in)
917{
918 if (devx_is_whitelist_cmd(cmd_in)) {
919 struct mlx5_ib_dev *dev;
920
921 if (c->devx_uid)
922 return c->devx_uid;
923
924 dev = to_mdev(c->ibucontext.device);
925 if (dev->devx_whitelist_uid)
926 return dev->devx_whitelist_uid;
927
928 return -EOPNOTSUPP;
929 }
930
931 if (!c->devx_uid)
932 return -EINVAL;
933
934 return c->devx_uid;
935}
936
937static bool devx_is_general_cmd(void *in, struct mlx5_ib_dev *dev)
938{
939 u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode);
940
941
942 if ((MLX5_CAP_GEN_64(dev->mdev, vhca_tunnel_commands) &&
943 MLX5_GET(general_obj_in_cmd_hdr, in, vhca_tunnel_id)) ||
944 (opcode >= MLX5_CMD_OP_GENERAL_START &&
945 opcode < MLX5_CMD_OP_GENERAL_END))
946 return true;
947
948 switch (opcode) {
949 case MLX5_CMD_OP_QUERY_HCA_CAP:
950 case MLX5_CMD_OP_QUERY_HCA_VPORT_CONTEXT:
951 case MLX5_CMD_OP_QUERY_ESW_VPORT_CONTEXT:
952 case MLX5_CMD_OP_QUERY_VPORT_STATE:
953 case MLX5_CMD_OP_QUERY_ADAPTER:
954 case MLX5_CMD_OP_QUERY_ISSI:
955 case MLX5_CMD_OP_QUERY_NIC_VPORT_CONTEXT:
956 case MLX5_CMD_OP_QUERY_ROCE_ADDRESS:
957 case MLX5_CMD_OP_QUERY_VNIC_ENV:
958 case MLX5_CMD_OP_QUERY_VPORT_COUNTER:
959 case MLX5_CMD_OP_GET_DROPPED_PACKET_LOG:
960 case MLX5_CMD_OP_NOP:
961 case MLX5_CMD_OP_QUERY_CONG_STATUS:
962 case MLX5_CMD_OP_QUERY_CONG_PARAMS:
963 case MLX5_CMD_OP_QUERY_CONG_STATISTICS:
964 case MLX5_CMD_OP_QUERY_LAG:
965 return true;
966 default:
967 return false;
968 }
969}
970
971static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_QUERY_EQN)(
972 struct uverbs_attr_bundle *attrs)
973{
974 struct mlx5_ib_ucontext *c;
975 struct mlx5_ib_dev *dev;
976 int user_vector;
977 int dev_eqn;
978 int err;
979
980 if (uverbs_copy_from(&user_vector, attrs,
981 MLX5_IB_ATTR_DEVX_QUERY_EQN_USER_VEC))
982 return -EFAULT;
983
984 c = devx_ufile2uctx(attrs);
985 if (IS_ERR(c))
986 return PTR_ERR(c);
987 dev = to_mdev(c->ibucontext.device);
988
989 err = mlx5_vector2eqn(dev->mdev, user_vector, &dev_eqn);
990 if (err < 0)
991 return err;
992
993 if (uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_QUERY_EQN_DEV_EQN,
994 &dev_eqn, sizeof(dev_eqn)))
995 return -EFAULT;
996
997 return 0;
998}
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_QUERY_UAR)(
1021 struct uverbs_attr_bundle *attrs)
1022{
1023 struct mlx5_ib_ucontext *c;
1024 struct mlx5_ib_dev *dev;
1025 u32 user_idx;
1026 s32 dev_idx;
1027
1028 c = devx_ufile2uctx(attrs);
1029 if (IS_ERR(c))
1030 return PTR_ERR(c);
1031 dev = to_mdev(c->ibucontext.device);
1032
1033 if (uverbs_copy_from(&user_idx, attrs,
1034 MLX5_IB_ATTR_DEVX_QUERY_UAR_USER_IDX))
1035 return -EFAULT;
1036
1037 dev_idx = bfregn_to_uar_index(dev, &c->bfregi, user_idx, true);
1038 if (dev_idx < 0)
1039 return dev_idx;
1040
1041 if (uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_QUERY_UAR_DEV_IDX,
1042 &dev_idx, sizeof(dev_idx)))
1043 return -EFAULT;
1044
1045 return 0;
1046}
1047
1048static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OTHER)(
1049 struct uverbs_attr_bundle *attrs)
1050{
1051 struct mlx5_ib_ucontext *c;
1052 struct mlx5_ib_dev *dev;
1053 void *cmd_in = uverbs_attr_get_alloced_ptr(
1054 attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_IN);
1055 int cmd_out_len = uverbs_attr_get_len(attrs,
1056 MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT);
1057 void *cmd_out;
1058 int err;
1059 int uid;
1060
1061 c = devx_ufile2uctx(attrs);
1062 if (IS_ERR(c))
1063 return PTR_ERR(c);
1064 dev = to_mdev(c->ibucontext.device);
1065
1066 uid = devx_get_uid(c, cmd_in);
1067 if (uid < 0)
1068 return uid;
1069
1070
1071 if (!devx_is_general_cmd(cmd_in, dev))
1072 return -EINVAL;
1073
1074 cmd_out = uverbs_zalloc(attrs, cmd_out_len);
1075 if (IS_ERR(cmd_out))
1076 return PTR_ERR(cmd_out);
1077
1078 MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid);
1079 err = mlx5_cmd_exec(dev->mdev, cmd_in,
1080 uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_IN),
1081 cmd_out, cmd_out_len);
1082 if (err)
1083 return err;
1084
1085 return uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT, cmd_out,
1086 cmd_out_len);
1087}
1088
1089static void devx_obj_build_destroy_cmd(void *in, void *out, void *din,
1090 u32 *dinlen,
1091 u32 *obj_id)
1092{
1093 u16 opcode = MLX5_GET(general_obj_in_cmd_hdr, in, opcode);
1094 u16 uid = MLX5_GET(general_obj_in_cmd_hdr, in, uid);
1095
1096 *obj_id = devx_get_created_obj_id(in, out, opcode);
1097 *dinlen = MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr);
1098 MLX5_SET(general_obj_in_cmd_hdr, din, uid, uid);
1099
1100 switch (opcode) {
1101 case MLX5_CMD_OP_CREATE_GENERAL_OBJECT:
1102 MLX5_SET(general_obj_in_cmd_hdr, din, opcode, MLX5_CMD_OP_DESTROY_GENERAL_OBJECT);
1103 MLX5_SET(general_obj_in_cmd_hdr, din, obj_id, *obj_id);
1104 MLX5_SET(general_obj_in_cmd_hdr, din, obj_type,
1105 MLX5_GET(general_obj_in_cmd_hdr, in, obj_type));
1106 break;
1107
1108 case MLX5_CMD_OP_CREATE_UMEM:
1109 MLX5_SET(destroy_umem_in, din, opcode,
1110 MLX5_CMD_OP_DESTROY_UMEM);
1111 MLX5_SET(destroy_umem_in, din, umem_id, *obj_id);
1112 break;
1113 case MLX5_CMD_OP_CREATE_MKEY:
1114 MLX5_SET(destroy_mkey_in, din, opcode,
1115 MLX5_CMD_OP_DESTROY_MKEY);
1116 MLX5_SET(destroy_mkey_in, din, mkey_index, *obj_id);
1117 break;
1118 case MLX5_CMD_OP_CREATE_CQ:
1119 MLX5_SET(destroy_cq_in, din, opcode, MLX5_CMD_OP_DESTROY_CQ);
1120 MLX5_SET(destroy_cq_in, din, cqn, *obj_id);
1121 break;
1122 case MLX5_CMD_OP_ALLOC_PD:
1123 MLX5_SET(dealloc_pd_in, din, opcode, MLX5_CMD_OP_DEALLOC_PD);
1124 MLX5_SET(dealloc_pd_in, din, pd, *obj_id);
1125 break;
1126 case MLX5_CMD_OP_ALLOC_TRANSPORT_DOMAIN:
1127 MLX5_SET(dealloc_transport_domain_in, din, opcode,
1128 MLX5_CMD_OP_DEALLOC_TRANSPORT_DOMAIN);
1129 MLX5_SET(dealloc_transport_domain_in, din, transport_domain,
1130 *obj_id);
1131 break;
1132 case MLX5_CMD_OP_CREATE_RMP:
1133 MLX5_SET(destroy_rmp_in, din, opcode, MLX5_CMD_OP_DESTROY_RMP);
1134 MLX5_SET(destroy_rmp_in, din, rmpn, *obj_id);
1135 break;
1136 case MLX5_CMD_OP_CREATE_SQ:
1137 MLX5_SET(destroy_sq_in, din, opcode, MLX5_CMD_OP_DESTROY_SQ);
1138 MLX5_SET(destroy_sq_in, din, sqn, *obj_id);
1139 break;
1140 case MLX5_CMD_OP_CREATE_RQ:
1141 MLX5_SET(destroy_rq_in, din, opcode, MLX5_CMD_OP_DESTROY_RQ);
1142 MLX5_SET(destroy_rq_in, din, rqn, *obj_id);
1143 break;
1144 case MLX5_CMD_OP_CREATE_RQT:
1145 MLX5_SET(destroy_rqt_in, din, opcode, MLX5_CMD_OP_DESTROY_RQT);
1146 MLX5_SET(destroy_rqt_in, din, rqtn, *obj_id);
1147 break;
1148 case MLX5_CMD_OP_CREATE_TIR:
1149 MLX5_SET(destroy_tir_in, din, opcode, MLX5_CMD_OP_DESTROY_TIR);
1150 MLX5_SET(destroy_tir_in, din, tirn, *obj_id);
1151 break;
1152 case MLX5_CMD_OP_CREATE_TIS:
1153 MLX5_SET(destroy_tis_in, din, opcode, MLX5_CMD_OP_DESTROY_TIS);
1154 MLX5_SET(destroy_tis_in, din, tisn, *obj_id);
1155 break;
1156 case MLX5_CMD_OP_ALLOC_Q_COUNTER:
1157 MLX5_SET(dealloc_q_counter_in, din, opcode,
1158 MLX5_CMD_OP_DEALLOC_Q_COUNTER);
1159 MLX5_SET(dealloc_q_counter_in, din, counter_set_id, *obj_id);
1160 break;
1161 case MLX5_CMD_OP_CREATE_FLOW_TABLE:
1162 *dinlen = MLX5_ST_SZ_BYTES(destroy_flow_table_in);
1163 MLX5_SET(destroy_flow_table_in, din, other_vport,
1164 MLX5_GET(create_flow_table_in, in, other_vport));
1165 MLX5_SET(destroy_flow_table_in, din, vport_number,
1166 MLX5_GET(create_flow_table_in, in, vport_number));
1167 MLX5_SET(destroy_flow_table_in, din, table_type,
1168 MLX5_GET(create_flow_table_in, in, table_type));
1169 MLX5_SET(destroy_flow_table_in, din, table_id, *obj_id);
1170 MLX5_SET(destroy_flow_table_in, din, opcode,
1171 MLX5_CMD_OP_DESTROY_FLOW_TABLE);
1172 break;
1173 case MLX5_CMD_OP_CREATE_FLOW_GROUP:
1174 *dinlen = MLX5_ST_SZ_BYTES(destroy_flow_group_in);
1175 MLX5_SET(destroy_flow_group_in, din, other_vport,
1176 MLX5_GET(create_flow_group_in, in, other_vport));
1177 MLX5_SET(destroy_flow_group_in, din, vport_number,
1178 MLX5_GET(create_flow_group_in, in, vport_number));
1179 MLX5_SET(destroy_flow_group_in, din, table_type,
1180 MLX5_GET(create_flow_group_in, in, table_type));
1181 MLX5_SET(destroy_flow_group_in, din, table_id,
1182 MLX5_GET(create_flow_group_in, in, table_id));
1183 MLX5_SET(destroy_flow_group_in, din, group_id, *obj_id);
1184 MLX5_SET(destroy_flow_group_in, din, opcode,
1185 MLX5_CMD_OP_DESTROY_FLOW_GROUP);
1186 break;
1187 case MLX5_CMD_OP_SET_FLOW_TABLE_ENTRY:
1188 *dinlen = MLX5_ST_SZ_BYTES(delete_fte_in);
1189 MLX5_SET(delete_fte_in, din, other_vport,
1190 MLX5_GET(set_fte_in, in, other_vport));
1191 MLX5_SET(delete_fte_in, din, vport_number,
1192 MLX5_GET(set_fte_in, in, vport_number));
1193 MLX5_SET(delete_fte_in, din, table_type,
1194 MLX5_GET(set_fte_in, in, table_type));
1195 MLX5_SET(delete_fte_in, din, table_id,
1196 MLX5_GET(set_fte_in, in, table_id));
1197 MLX5_SET(delete_fte_in, din, flow_index, *obj_id);
1198 MLX5_SET(delete_fte_in, din, opcode,
1199 MLX5_CMD_OP_DELETE_FLOW_TABLE_ENTRY);
1200 break;
1201 case MLX5_CMD_OP_ALLOC_FLOW_COUNTER:
1202 MLX5_SET(dealloc_flow_counter_in, din, opcode,
1203 MLX5_CMD_OP_DEALLOC_FLOW_COUNTER);
1204 MLX5_SET(dealloc_flow_counter_in, din, flow_counter_id,
1205 *obj_id);
1206 break;
1207 case MLX5_CMD_OP_ALLOC_PACKET_REFORMAT_CONTEXT:
1208 MLX5_SET(dealloc_packet_reformat_context_in, din, opcode,
1209 MLX5_CMD_OP_DEALLOC_PACKET_REFORMAT_CONTEXT);
1210 MLX5_SET(dealloc_packet_reformat_context_in, din,
1211 packet_reformat_id, *obj_id);
1212 break;
1213 case MLX5_CMD_OP_ALLOC_MODIFY_HEADER_CONTEXT:
1214 MLX5_SET(dealloc_modify_header_context_in, din, opcode,
1215 MLX5_CMD_OP_DEALLOC_MODIFY_HEADER_CONTEXT);
1216 MLX5_SET(dealloc_modify_header_context_in, din,
1217 modify_header_id, *obj_id);
1218 break;
1219 case MLX5_CMD_OP_CREATE_SCHEDULING_ELEMENT:
1220 *dinlen = MLX5_ST_SZ_BYTES(destroy_scheduling_element_in);
1221 MLX5_SET(destroy_scheduling_element_in, din,
1222 scheduling_hierarchy,
1223 MLX5_GET(create_scheduling_element_in, in,
1224 scheduling_hierarchy));
1225 MLX5_SET(destroy_scheduling_element_in, din,
1226 scheduling_element_id, *obj_id);
1227 MLX5_SET(destroy_scheduling_element_in, din, opcode,
1228 MLX5_CMD_OP_DESTROY_SCHEDULING_ELEMENT);
1229 break;
1230 case MLX5_CMD_OP_ADD_VXLAN_UDP_DPORT:
1231 *dinlen = MLX5_ST_SZ_BYTES(delete_vxlan_udp_dport_in);
1232 MLX5_SET(delete_vxlan_udp_dport_in, din, vxlan_udp_port, *obj_id);
1233 MLX5_SET(delete_vxlan_udp_dport_in, din, opcode,
1234 MLX5_CMD_OP_DELETE_VXLAN_UDP_DPORT);
1235 break;
1236 case MLX5_CMD_OP_SET_L2_TABLE_ENTRY:
1237 *dinlen = MLX5_ST_SZ_BYTES(delete_l2_table_entry_in);
1238 MLX5_SET(delete_l2_table_entry_in, din, table_index, *obj_id);
1239 MLX5_SET(delete_l2_table_entry_in, din, opcode,
1240 MLX5_CMD_OP_DELETE_L2_TABLE_ENTRY);
1241 break;
1242 case MLX5_CMD_OP_CREATE_QP:
1243 MLX5_SET(destroy_qp_in, din, opcode, MLX5_CMD_OP_DESTROY_QP);
1244 MLX5_SET(destroy_qp_in, din, qpn, *obj_id);
1245 break;
1246 case MLX5_CMD_OP_CREATE_SRQ:
1247 MLX5_SET(destroy_srq_in, din, opcode, MLX5_CMD_OP_DESTROY_SRQ);
1248 MLX5_SET(destroy_srq_in, din, srqn, *obj_id);
1249 break;
1250 case MLX5_CMD_OP_CREATE_XRC_SRQ:
1251 MLX5_SET(destroy_xrc_srq_in, din, opcode,
1252 MLX5_CMD_OP_DESTROY_XRC_SRQ);
1253 MLX5_SET(destroy_xrc_srq_in, din, xrc_srqn, *obj_id);
1254 break;
1255 case MLX5_CMD_OP_CREATE_DCT:
1256 MLX5_SET(destroy_dct_in, din, opcode, MLX5_CMD_OP_DESTROY_DCT);
1257 MLX5_SET(destroy_dct_in, din, dctn, *obj_id);
1258 break;
1259 case MLX5_CMD_OP_CREATE_XRQ:
1260 MLX5_SET(destroy_xrq_in, din, opcode, MLX5_CMD_OP_DESTROY_XRQ);
1261 MLX5_SET(destroy_xrq_in, din, xrqn, *obj_id);
1262 break;
1263 case MLX5_CMD_OP_ATTACH_TO_MCG:
1264 *dinlen = MLX5_ST_SZ_BYTES(detach_from_mcg_in);
1265 MLX5_SET(detach_from_mcg_in, din, qpn,
1266 MLX5_GET(attach_to_mcg_in, in, qpn));
1267 memcpy(MLX5_ADDR_OF(detach_from_mcg_in, din, multicast_gid),
1268 MLX5_ADDR_OF(attach_to_mcg_in, in, multicast_gid),
1269 MLX5_FLD_SZ_BYTES(attach_to_mcg_in, multicast_gid));
1270 MLX5_SET(detach_from_mcg_in, din, opcode,
1271 MLX5_CMD_OP_DETACH_FROM_MCG);
1272 MLX5_SET(detach_from_mcg_in, din, qpn, *obj_id);
1273 break;
1274 case MLX5_CMD_OP_ALLOC_XRCD:
1275 MLX5_SET(dealloc_xrcd_in, din, opcode,
1276 MLX5_CMD_OP_DEALLOC_XRCD);
1277 MLX5_SET(dealloc_xrcd_in, din, xrcd, *obj_id);
1278 break;
1279 case MLX5_CMD_OP_CREATE_PSV:
1280 MLX5_SET(destroy_psv_in, din, opcode,
1281 MLX5_CMD_OP_DESTROY_PSV);
1282 MLX5_SET(destroy_psv_in, din, psvn, *obj_id);
1283 break;
1284 default:
1285
1286 WARN_ON(true);
1287 break;
1288 }
1289}
1290
1291static int devx_handle_mkey_indirect(struct devx_obj *obj,
1292 struct mlx5_ib_dev *dev,
1293 void *in, void *out)
1294{
1295 struct mlx5_ib_devx_mr *devx_mr = &obj->devx_mr;
1296 struct mlx5_core_mkey *mkey;
1297 void *mkc;
1298 u8 key;
1299
1300 mkey = &devx_mr->mmkey;
1301 mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry);
1302 key = MLX5_GET(mkc, mkc, mkey_7_0);
1303 mkey->key = mlx5_idx_to_mkey(
1304 MLX5_GET(create_mkey_out, out, mkey_index)) | key;
1305 mkey->type = MLX5_MKEY_INDIRECT_DEVX;
1306 mkey->iova = MLX5_GET64(mkc, mkc, start_addr);
1307 mkey->size = MLX5_GET64(mkc, mkc, len);
1308 mkey->pd = MLX5_GET(mkc, mkc, pd);
1309 devx_mr->ndescs = MLX5_GET(mkc, mkc, translations_octword_size);
1310 init_waitqueue_head(&mkey->wait);
1311
1312 return mlx5r_store_odp_mkey(dev, mkey);
1313}
1314
1315static int devx_handle_mkey_create(struct mlx5_ib_dev *dev,
1316 struct devx_obj *obj,
1317 void *in, int in_len)
1318{
1319 int min_len = MLX5_BYTE_OFF(create_mkey_in, memory_key_mkey_entry) +
1320 MLX5_FLD_SZ_BYTES(create_mkey_in,
1321 memory_key_mkey_entry);
1322 void *mkc;
1323 u8 access_mode;
1324
1325 if (in_len < min_len)
1326 return -EINVAL;
1327
1328 mkc = MLX5_ADDR_OF(create_mkey_in, in, memory_key_mkey_entry);
1329
1330 access_mode = MLX5_GET(mkc, mkc, access_mode_1_0);
1331 access_mode |= MLX5_GET(mkc, mkc, access_mode_4_2) << 2;
1332
1333 if (access_mode == MLX5_MKC_ACCESS_MODE_KLMS ||
1334 access_mode == MLX5_MKC_ACCESS_MODE_KSM) {
1335 if (IS_ENABLED(CONFIG_INFINIBAND_ON_DEMAND_PAGING))
1336 obj->flags |= DEVX_OBJ_FLAGS_INDIRECT_MKEY;
1337 return 0;
1338 }
1339
1340 MLX5_SET(create_mkey_in, in, mkey_umem_valid, 1);
1341 return 0;
1342}
1343
1344static void devx_cleanup_subscription(struct mlx5_ib_dev *dev,
1345 struct devx_event_subscription *sub)
1346{
1347 struct devx_event *event;
1348 struct devx_obj_event *xa_val_level2;
1349
1350 if (sub->is_cleaned)
1351 return;
1352
1353 sub->is_cleaned = 1;
1354 list_del_rcu(&sub->xa_list);
1355
1356 if (list_empty(&sub->obj_list))
1357 return;
1358
1359 list_del_rcu(&sub->obj_list);
1360
1361 event = xa_load(&dev->devx_event_table.event_xa,
1362 sub->xa_key_level1);
1363 WARN_ON(!event);
1364
1365 xa_val_level2 = xa_load(&event->object_ids, sub->xa_key_level2);
1366 if (list_empty(&xa_val_level2->obj_sub_list)) {
1367 xa_erase(&event->object_ids,
1368 sub->xa_key_level2);
1369 kfree_rcu(xa_val_level2, rcu);
1370 }
1371}
1372
1373static int devx_obj_cleanup(struct ib_uobject *uobject,
1374 enum rdma_remove_reason why,
1375 struct uverbs_attr_bundle *attrs)
1376{
1377 u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)];
1378 struct mlx5_devx_event_table *devx_event_table;
1379 struct devx_obj *obj = uobject->object;
1380 struct devx_event_subscription *sub_entry, *tmp;
1381 struct mlx5_ib_dev *dev;
1382 int ret;
1383
1384 dev = mlx5_udata_to_mdev(&attrs->driver_udata);
1385 if (obj->flags & DEVX_OBJ_FLAGS_INDIRECT_MKEY &&
1386 xa_erase(&obj->ib_dev->odp_mkeys,
1387 mlx5_base_mkey(obj->devx_mr.mmkey.key)))
1388
1389
1390
1391
1392
1393 mlx5r_deref_wait_odp_mkey(&obj->devx_mr.mmkey);
1394
1395 if (obj->flags & DEVX_OBJ_FLAGS_DCT)
1396 ret = mlx5_core_destroy_dct(obj->ib_dev, &obj->core_dct);
1397 else if (obj->flags & DEVX_OBJ_FLAGS_CQ)
1398 ret = mlx5_core_destroy_cq(obj->ib_dev->mdev, &obj->core_cq);
1399 else
1400 ret = mlx5_cmd_exec(obj->ib_dev->mdev, obj->dinbox,
1401 obj->dinlen, out, sizeof(out));
1402 if (ret)
1403 return ret;
1404
1405 devx_event_table = &dev->devx_event_table;
1406
1407 mutex_lock(&devx_event_table->event_xa_lock);
1408 list_for_each_entry_safe(sub_entry, tmp, &obj->event_sub, obj_list)
1409 devx_cleanup_subscription(dev, sub_entry);
1410 mutex_unlock(&devx_event_table->event_xa_lock);
1411
1412 kfree(obj);
1413 return ret;
1414}
1415
1416static void devx_cq_comp(struct mlx5_core_cq *mcq, struct mlx5_eqe *eqe)
1417{
1418 struct devx_obj *obj = container_of(mcq, struct devx_obj, core_cq);
1419 struct mlx5_devx_event_table *table;
1420 struct devx_event *event;
1421 struct devx_obj_event *obj_event;
1422 u32 obj_id = mcq->cqn;
1423
1424 table = &obj->ib_dev->devx_event_table;
1425 rcu_read_lock();
1426 event = xa_load(&table->event_xa, MLX5_EVENT_TYPE_COMP);
1427 if (!event)
1428 goto out;
1429
1430 obj_event = xa_load(&event->object_ids, obj_id);
1431 if (!obj_event)
1432 goto out;
1433
1434 dispatch_event_fd(&obj_event->obj_sub_list, eqe);
1435out:
1436 rcu_read_unlock();
1437}
1438
1439static bool is_apu_thread_cq(struct mlx5_ib_dev *dev, const void *in)
1440{
1441 if (!MLX5_CAP_GEN(dev->mdev, apu) ||
1442 !MLX5_GET(cqc, MLX5_ADDR_OF(create_cq_in, in, cq_context),
1443 apu_thread_cq))
1444 return false;
1445
1446 return true;
1447}
1448
1449static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_CREATE)(
1450 struct uverbs_attr_bundle *attrs)
1451{
1452 void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN);
1453 int cmd_out_len = uverbs_attr_get_len(attrs,
1454 MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT);
1455 int cmd_in_len = uverbs_attr_get_len(attrs,
1456 MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN);
1457 void *cmd_out;
1458 struct ib_uobject *uobj = uverbs_attr_get_uobject(
1459 attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_HANDLE);
1460 struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context(
1461 &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext);
1462 struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device);
1463 u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)];
1464 struct devx_obj *obj;
1465 u16 obj_type = 0;
1466 int err;
1467 int uid;
1468 u32 obj_id;
1469 u16 opcode;
1470
1471 if (MLX5_GET(general_obj_in_cmd_hdr, cmd_in, vhca_tunnel_id))
1472 return -EINVAL;
1473
1474 uid = devx_get_uid(c, cmd_in);
1475 if (uid < 0)
1476 return uid;
1477
1478 if (!devx_is_obj_create_cmd(cmd_in, &opcode))
1479 return -EINVAL;
1480
1481 cmd_out = uverbs_zalloc(attrs, cmd_out_len);
1482 if (IS_ERR(cmd_out))
1483 return PTR_ERR(cmd_out);
1484
1485 obj = kzalloc(sizeof(struct devx_obj), GFP_KERNEL);
1486 if (!obj)
1487 return -ENOMEM;
1488
1489 MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid);
1490 if (opcode == MLX5_CMD_OP_CREATE_MKEY) {
1491 err = devx_handle_mkey_create(dev, obj, cmd_in, cmd_in_len);
1492 if (err)
1493 goto obj_free;
1494 } else {
1495 devx_set_umem_valid(cmd_in);
1496 }
1497
1498 if (opcode == MLX5_CMD_OP_CREATE_DCT) {
1499 obj->flags |= DEVX_OBJ_FLAGS_DCT;
1500 err = mlx5_core_create_dct(dev, &obj->core_dct, cmd_in,
1501 cmd_in_len, cmd_out, cmd_out_len);
1502 } else if (opcode == MLX5_CMD_OP_CREATE_CQ &&
1503 !is_apu_thread_cq(dev, cmd_in)) {
1504 obj->flags |= DEVX_OBJ_FLAGS_CQ;
1505 obj->core_cq.comp = devx_cq_comp;
1506 err = mlx5_core_create_cq(dev->mdev, &obj->core_cq,
1507 cmd_in, cmd_in_len, cmd_out,
1508 cmd_out_len);
1509 } else {
1510 err = mlx5_cmd_exec(dev->mdev, cmd_in,
1511 cmd_in_len,
1512 cmd_out, cmd_out_len);
1513 }
1514
1515 if (err)
1516 goto obj_free;
1517
1518 if (opcode == MLX5_CMD_OP_ALLOC_FLOW_COUNTER) {
1519 u8 bulk = MLX5_GET(alloc_flow_counter_in,
1520 cmd_in,
1521 flow_counter_bulk);
1522 obj->flow_counter_bulk_size = 128UL * bulk;
1523 }
1524
1525 uobj->object = obj;
1526 INIT_LIST_HEAD(&obj->event_sub);
1527 obj->ib_dev = dev;
1528 devx_obj_build_destroy_cmd(cmd_in, cmd_out, obj->dinbox, &obj->dinlen,
1529 &obj_id);
1530 WARN_ON(obj->dinlen > MLX5_MAX_DESTROY_INBOX_SIZE_DW * sizeof(u32));
1531
1532 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT, cmd_out, cmd_out_len);
1533 if (err)
1534 goto obj_destroy;
1535
1536 if (opcode == MLX5_CMD_OP_CREATE_GENERAL_OBJECT)
1537 obj_type = MLX5_GET(general_obj_in_cmd_hdr, cmd_in, obj_type);
1538 obj->obj_id = get_enc_obj_id(opcode | obj_type << 16, obj_id);
1539
1540 if (obj->flags & DEVX_OBJ_FLAGS_INDIRECT_MKEY) {
1541 err = devx_handle_mkey_indirect(obj, dev, cmd_in, cmd_out);
1542 if (err)
1543 goto obj_destroy;
1544 }
1545 return 0;
1546
1547obj_destroy:
1548 if (obj->flags & DEVX_OBJ_FLAGS_DCT)
1549 mlx5_core_destroy_dct(obj->ib_dev, &obj->core_dct);
1550 else if (obj->flags & DEVX_OBJ_FLAGS_CQ)
1551 mlx5_core_destroy_cq(obj->ib_dev->mdev, &obj->core_cq);
1552 else
1553 mlx5_cmd_exec(obj->ib_dev->mdev, obj->dinbox, obj->dinlen, out,
1554 sizeof(out));
1555obj_free:
1556 kfree(obj);
1557 return err;
1558}
1559
1560static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_MODIFY)(
1561 struct uverbs_attr_bundle *attrs)
1562{
1563 void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN);
1564 int cmd_out_len = uverbs_attr_get_len(attrs,
1565 MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT);
1566 struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs,
1567 MLX5_IB_ATTR_DEVX_OBJ_MODIFY_HANDLE);
1568 struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context(
1569 &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext);
1570 struct mlx5_ib_dev *mdev = to_mdev(c->ibucontext.device);
1571 void *cmd_out;
1572 int err;
1573 int uid;
1574
1575 if (MLX5_GET(general_obj_in_cmd_hdr, cmd_in, vhca_tunnel_id))
1576 return -EINVAL;
1577
1578 uid = devx_get_uid(c, cmd_in);
1579 if (uid < 0)
1580 return uid;
1581
1582 if (!devx_is_obj_modify_cmd(cmd_in))
1583 return -EINVAL;
1584
1585 if (!devx_is_valid_obj_id(attrs, uobj, cmd_in))
1586 return -EINVAL;
1587
1588 cmd_out = uverbs_zalloc(attrs, cmd_out_len);
1589 if (IS_ERR(cmd_out))
1590 return PTR_ERR(cmd_out);
1591
1592 MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid);
1593 devx_set_umem_valid(cmd_in);
1594
1595 err = mlx5_cmd_exec(mdev->mdev, cmd_in,
1596 uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN),
1597 cmd_out, cmd_out_len);
1598 if (err)
1599 return err;
1600
1601 return uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT,
1602 cmd_out, cmd_out_len);
1603}
1604
1605static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_QUERY)(
1606 struct uverbs_attr_bundle *attrs)
1607{
1608 void *cmd_in = uverbs_attr_get_alloced_ptr(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN);
1609 int cmd_out_len = uverbs_attr_get_len(attrs,
1610 MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT);
1611 struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs,
1612 MLX5_IB_ATTR_DEVX_OBJ_QUERY_HANDLE);
1613 struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context(
1614 &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext);
1615 void *cmd_out;
1616 int err;
1617 int uid;
1618 struct mlx5_ib_dev *mdev = to_mdev(c->ibucontext.device);
1619
1620 if (MLX5_GET(general_obj_in_cmd_hdr, cmd_in, vhca_tunnel_id))
1621 return -EINVAL;
1622
1623 uid = devx_get_uid(c, cmd_in);
1624 if (uid < 0)
1625 return uid;
1626
1627 if (!devx_is_obj_query_cmd(cmd_in))
1628 return -EINVAL;
1629
1630 if (!devx_is_valid_obj_id(attrs, uobj, cmd_in))
1631 return -EINVAL;
1632
1633 cmd_out = uverbs_zalloc(attrs, cmd_out_len);
1634 if (IS_ERR(cmd_out))
1635 return PTR_ERR(cmd_out);
1636
1637 MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid);
1638 err = mlx5_cmd_exec(mdev->mdev, cmd_in,
1639 uverbs_attr_get_len(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN),
1640 cmd_out, cmd_out_len);
1641 if (err)
1642 return err;
1643
1644 return uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT,
1645 cmd_out, cmd_out_len);
1646}
1647
1648struct devx_async_event_queue {
1649 spinlock_t lock;
1650 wait_queue_head_t poll_wait;
1651 struct list_head event_list;
1652 atomic_t bytes_in_use;
1653 u8 is_destroyed:1;
1654};
1655
1656struct devx_async_cmd_event_file {
1657 struct ib_uobject uobj;
1658 struct devx_async_event_queue ev_queue;
1659 struct mlx5_async_ctx async_ctx;
1660};
1661
1662static void devx_init_event_queue(struct devx_async_event_queue *ev_queue)
1663{
1664 spin_lock_init(&ev_queue->lock);
1665 INIT_LIST_HEAD(&ev_queue->event_list);
1666 init_waitqueue_head(&ev_queue->poll_wait);
1667 atomic_set(&ev_queue->bytes_in_use, 0);
1668 ev_queue->is_destroyed = 0;
1669}
1670
1671static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_ASYNC_CMD_FD_ALLOC)(
1672 struct uverbs_attr_bundle *attrs)
1673{
1674 struct devx_async_cmd_event_file *ev_file;
1675
1676 struct ib_uobject *uobj = uverbs_attr_get_uobject(
1677 attrs, MLX5_IB_ATTR_DEVX_ASYNC_CMD_FD_ALLOC_HANDLE);
1678 struct mlx5_ib_dev *mdev = mlx5_udata_to_mdev(&attrs->driver_udata);
1679
1680 ev_file = container_of(uobj, struct devx_async_cmd_event_file,
1681 uobj);
1682 devx_init_event_queue(&ev_file->ev_queue);
1683 mlx5_cmd_init_async_ctx(mdev->mdev, &ev_file->async_ctx);
1684 return 0;
1685}
1686
1687static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_ASYNC_EVENT_FD_ALLOC)(
1688 struct uverbs_attr_bundle *attrs)
1689{
1690 struct ib_uobject *uobj = uverbs_attr_get_uobject(
1691 attrs, MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_HANDLE);
1692 struct devx_async_event_file *ev_file;
1693 struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context(
1694 &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext);
1695 struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device);
1696 u32 flags;
1697 int err;
1698
1699 err = uverbs_get_flags32(&flags, attrs,
1700 MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_FLAGS,
1701 MLX5_IB_UAPI_DEVX_CR_EV_CH_FLAGS_OMIT_DATA);
1702
1703 if (err)
1704 return err;
1705
1706 ev_file = container_of(uobj, struct devx_async_event_file,
1707 uobj);
1708 spin_lock_init(&ev_file->lock);
1709 INIT_LIST_HEAD(&ev_file->event_list);
1710 init_waitqueue_head(&ev_file->poll_wait);
1711 if (flags & MLX5_IB_UAPI_DEVX_CR_EV_CH_FLAGS_OMIT_DATA)
1712 ev_file->omit_data = 1;
1713 INIT_LIST_HEAD(&ev_file->subscribed_events_list);
1714 ev_file->dev = dev;
1715 get_device(&dev->ib_dev.dev);
1716 return 0;
1717}
1718
1719static void devx_query_callback(int status, struct mlx5_async_work *context)
1720{
1721 struct devx_async_data *async_data =
1722 container_of(context, struct devx_async_data, cb_work);
1723 struct devx_async_cmd_event_file *ev_file = async_data->ev_file;
1724 struct devx_async_event_queue *ev_queue = &ev_file->ev_queue;
1725 unsigned long flags;
1726
1727
1728
1729
1730
1731
1732 spin_lock_irqsave(&ev_queue->lock, flags);
1733 list_add_tail(&async_data->list, &ev_queue->event_list);
1734 spin_unlock_irqrestore(&ev_queue->lock, flags);
1735
1736 wake_up_interruptible(&ev_queue->poll_wait);
1737}
1738
1739#define MAX_ASYNC_BYTES_IN_USE (1024 * 1024)
1740
1741static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_OBJ_ASYNC_QUERY)(
1742 struct uverbs_attr_bundle *attrs)
1743{
1744 void *cmd_in = uverbs_attr_get_alloced_ptr(attrs,
1745 MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_CMD_IN);
1746 struct ib_uobject *uobj = uverbs_attr_get_uobject(
1747 attrs,
1748 MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_HANDLE);
1749 u16 cmd_out_len;
1750 struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context(
1751 &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext);
1752 struct ib_uobject *fd_uobj;
1753 int err;
1754 int uid;
1755 struct mlx5_ib_dev *mdev = to_mdev(c->ibucontext.device);
1756 struct devx_async_cmd_event_file *ev_file;
1757 struct devx_async_data *async_data;
1758
1759 if (MLX5_GET(general_obj_in_cmd_hdr, cmd_in, vhca_tunnel_id))
1760 return -EINVAL;
1761
1762 uid = devx_get_uid(c, cmd_in);
1763 if (uid < 0)
1764 return uid;
1765
1766 if (!devx_is_obj_query_cmd(cmd_in))
1767 return -EINVAL;
1768
1769 err = uverbs_get_const(&cmd_out_len, attrs,
1770 MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_OUT_LEN);
1771 if (err)
1772 return err;
1773
1774 if (!devx_is_valid_obj_id(attrs, uobj, cmd_in))
1775 return -EINVAL;
1776
1777 fd_uobj = uverbs_attr_get_uobject(attrs,
1778 MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_FD);
1779 if (IS_ERR(fd_uobj))
1780 return PTR_ERR(fd_uobj);
1781
1782 ev_file = container_of(fd_uobj, struct devx_async_cmd_event_file,
1783 uobj);
1784
1785 if (atomic_add_return(cmd_out_len, &ev_file->ev_queue.bytes_in_use) >
1786 MAX_ASYNC_BYTES_IN_USE) {
1787 atomic_sub(cmd_out_len, &ev_file->ev_queue.bytes_in_use);
1788 return -EAGAIN;
1789 }
1790
1791 async_data = kvzalloc(struct_size(async_data, hdr.out_data,
1792 cmd_out_len), GFP_KERNEL);
1793 if (!async_data) {
1794 err = -ENOMEM;
1795 goto sub_bytes;
1796 }
1797
1798 err = uverbs_copy_from(&async_data->hdr.wr_id, attrs,
1799 MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_WR_ID);
1800 if (err)
1801 goto free_async;
1802
1803 async_data->cmd_out_len = cmd_out_len;
1804 async_data->mdev = mdev;
1805 async_data->ev_file = ev_file;
1806
1807 MLX5_SET(general_obj_in_cmd_hdr, cmd_in, uid, uid);
1808 err = mlx5_cmd_exec_cb(&ev_file->async_ctx, cmd_in,
1809 uverbs_attr_get_len(attrs,
1810 MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_CMD_IN),
1811 async_data->hdr.out_data,
1812 async_data->cmd_out_len,
1813 devx_query_callback, &async_data->cb_work);
1814
1815 if (err)
1816 goto free_async;
1817
1818 return 0;
1819
1820free_async:
1821 kvfree(async_data);
1822sub_bytes:
1823 atomic_sub(cmd_out_len, &ev_file->ev_queue.bytes_in_use);
1824 return err;
1825}
1826
1827static void
1828subscribe_event_xa_dealloc(struct mlx5_devx_event_table *devx_event_table,
1829 u32 key_level1,
1830 bool is_level2,
1831 u32 key_level2)
1832{
1833 struct devx_event *event;
1834 struct devx_obj_event *xa_val_level2;
1835
1836
1837 if (!is_level2)
1838 return;
1839
1840 event = xa_load(&devx_event_table->event_xa, key_level1);
1841 WARN_ON(!event);
1842
1843 xa_val_level2 = xa_load(&event->object_ids,
1844 key_level2);
1845 if (list_empty(&xa_val_level2->obj_sub_list)) {
1846 xa_erase(&event->object_ids,
1847 key_level2);
1848 kfree_rcu(xa_val_level2, rcu);
1849 }
1850}
1851
1852static int
1853subscribe_event_xa_alloc(struct mlx5_devx_event_table *devx_event_table,
1854 u32 key_level1,
1855 bool is_level2,
1856 u32 key_level2)
1857{
1858 struct devx_obj_event *obj_event;
1859 struct devx_event *event;
1860 int err;
1861
1862 event = xa_load(&devx_event_table->event_xa, key_level1);
1863 if (!event) {
1864 event = kzalloc(sizeof(*event), GFP_KERNEL);
1865 if (!event)
1866 return -ENOMEM;
1867
1868 INIT_LIST_HEAD(&event->unaffiliated_list);
1869 xa_init(&event->object_ids);
1870
1871 err = xa_insert(&devx_event_table->event_xa,
1872 key_level1,
1873 event,
1874 GFP_KERNEL);
1875 if (err) {
1876 kfree(event);
1877 return err;
1878 }
1879 }
1880
1881 if (!is_level2)
1882 return 0;
1883
1884 obj_event = xa_load(&event->object_ids, key_level2);
1885 if (!obj_event) {
1886 obj_event = kzalloc(sizeof(*obj_event), GFP_KERNEL);
1887 if (!obj_event)
1888
1889 return -ENOMEM;
1890
1891 err = xa_insert(&event->object_ids,
1892 key_level2,
1893 obj_event,
1894 GFP_KERNEL);
1895 if (err)
1896 return err;
1897 INIT_LIST_HEAD(&obj_event->obj_sub_list);
1898 }
1899
1900 return 0;
1901}
1902
1903static bool is_valid_events_legacy(int num_events, u16 *event_type_num_list,
1904 struct devx_obj *obj)
1905{
1906 int i;
1907
1908 for (i = 0; i < num_events; i++) {
1909 if (obj) {
1910 if (!is_legacy_obj_event_num(event_type_num_list[i]))
1911 return false;
1912 } else if (!is_legacy_unaffiliated_event_num(
1913 event_type_num_list[i])) {
1914 return false;
1915 }
1916 }
1917
1918 return true;
1919}
1920
1921#define MAX_SUPP_EVENT_NUM 255
1922static bool is_valid_events(struct mlx5_core_dev *dev,
1923 int num_events, u16 *event_type_num_list,
1924 struct devx_obj *obj)
1925{
1926 __be64 *aff_events;
1927 __be64 *unaff_events;
1928 int mask_entry;
1929 int mask_bit;
1930 int i;
1931
1932 if (MLX5_CAP_GEN(dev, event_cap)) {
1933 aff_events = MLX5_CAP_DEV_EVENT(dev,
1934 user_affiliated_events);
1935 unaff_events = MLX5_CAP_DEV_EVENT(dev,
1936 user_unaffiliated_events);
1937 } else {
1938 return is_valid_events_legacy(num_events, event_type_num_list,
1939 obj);
1940 }
1941
1942 for (i = 0; i < num_events; i++) {
1943 if (event_type_num_list[i] > MAX_SUPP_EVENT_NUM)
1944 return false;
1945
1946 mask_entry = event_type_num_list[i] / 64;
1947 mask_bit = event_type_num_list[i] % 64;
1948
1949 if (obj) {
1950
1951 if (event_type_num_list[i] == 0)
1952 continue;
1953
1954 if (!(be64_to_cpu(aff_events[mask_entry]) &
1955 (1ull << mask_bit)))
1956 return false;
1957
1958 continue;
1959 }
1960
1961 if (!(be64_to_cpu(unaff_events[mask_entry]) &
1962 (1ull << mask_bit)))
1963 return false;
1964 }
1965
1966 return true;
1967}
1968
1969#define MAX_NUM_EVENTS 16
1970static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_SUBSCRIBE_EVENT)(
1971 struct uverbs_attr_bundle *attrs)
1972{
1973 struct ib_uobject *devx_uobj = uverbs_attr_get_uobject(
1974 attrs,
1975 MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_OBJ_HANDLE);
1976 struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context(
1977 &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext);
1978 struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device);
1979 struct ib_uobject *fd_uobj;
1980 struct devx_obj *obj = NULL;
1981 struct devx_async_event_file *ev_file;
1982 struct mlx5_devx_event_table *devx_event_table = &dev->devx_event_table;
1983 u16 *event_type_num_list;
1984 struct devx_event_subscription *event_sub, *tmp_sub;
1985 struct list_head sub_list;
1986 int redirect_fd;
1987 bool use_eventfd = false;
1988 int num_events;
1989 int num_alloc_xa_entries = 0;
1990 u16 obj_type = 0;
1991 u64 cookie = 0;
1992 u32 obj_id = 0;
1993 int err;
1994 int i;
1995
1996 if (!c->devx_uid)
1997 return -EINVAL;
1998
1999 if (!IS_ERR(devx_uobj)) {
2000 obj = (struct devx_obj *)devx_uobj->object;
2001 if (obj)
2002 obj_id = get_dec_obj_id(obj->obj_id);
2003 }
2004
2005 fd_uobj = uverbs_attr_get_uobject(attrs,
2006 MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_HANDLE);
2007 if (IS_ERR(fd_uobj))
2008 return PTR_ERR(fd_uobj);
2009
2010 ev_file = container_of(fd_uobj, struct devx_async_event_file,
2011 uobj);
2012
2013 if (uverbs_attr_is_valid(attrs,
2014 MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_NUM)) {
2015 err = uverbs_copy_from(&redirect_fd, attrs,
2016 MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_NUM);
2017 if (err)
2018 return err;
2019
2020 use_eventfd = true;
2021 }
2022
2023 if (uverbs_attr_is_valid(attrs,
2024 MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_COOKIE)) {
2025 if (use_eventfd)
2026 return -EINVAL;
2027
2028 err = uverbs_copy_from(&cookie, attrs,
2029 MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_COOKIE);
2030 if (err)
2031 return err;
2032 }
2033
2034 num_events = uverbs_attr_ptr_get_array_size(
2035 attrs, MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_TYPE_NUM_LIST,
2036 sizeof(u16));
2037
2038 if (num_events < 0)
2039 return num_events;
2040
2041 if (num_events > MAX_NUM_EVENTS)
2042 return -EINVAL;
2043
2044 event_type_num_list = uverbs_attr_get_alloced_ptr(attrs,
2045 MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_TYPE_NUM_LIST);
2046
2047 if (!is_valid_events(dev->mdev, num_events, event_type_num_list, obj))
2048 return -EINVAL;
2049
2050 INIT_LIST_HEAD(&sub_list);
2051
2052
2053
2054
2055 mutex_lock(&devx_event_table->event_xa_lock);
2056 for (i = 0; i < num_events; i++) {
2057 u32 key_level1;
2058
2059 if (obj)
2060 obj_type = get_dec_obj_type(obj,
2061 event_type_num_list[i]);
2062 key_level1 = event_type_num_list[i] | obj_type << 16;
2063
2064 err = subscribe_event_xa_alloc(devx_event_table,
2065 key_level1,
2066 obj,
2067 obj_id);
2068 if (err)
2069 goto err;
2070
2071 num_alloc_xa_entries++;
2072 event_sub = kzalloc(sizeof(*event_sub), GFP_KERNEL);
2073 if (!event_sub) {
2074 err = -ENOMEM;
2075 goto err;
2076 }
2077
2078 list_add_tail(&event_sub->event_list, &sub_list);
2079 uverbs_uobject_get(&ev_file->uobj);
2080 if (use_eventfd) {
2081 event_sub->eventfd =
2082 eventfd_ctx_fdget(redirect_fd);
2083
2084 if (IS_ERR(event_sub->eventfd)) {
2085 err = PTR_ERR(event_sub->eventfd);
2086 event_sub->eventfd = NULL;
2087 goto err;
2088 }
2089 }
2090
2091 event_sub->cookie = cookie;
2092 event_sub->ev_file = ev_file;
2093
2094 event_sub->xa_key_level1 = key_level1;
2095 event_sub->xa_key_level2 = obj_id;
2096 INIT_LIST_HEAD(&event_sub->obj_list);
2097 }
2098
2099
2100
2101
2102
2103 list_for_each_entry_safe(event_sub, tmp_sub, &sub_list, event_list) {
2104 struct devx_event *event;
2105 struct devx_obj_event *obj_event;
2106
2107 list_del_init(&event_sub->event_list);
2108
2109 spin_lock_irq(&ev_file->lock);
2110 list_add_tail_rcu(&event_sub->file_list,
2111 &ev_file->subscribed_events_list);
2112 spin_unlock_irq(&ev_file->lock);
2113
2114 event = xa_load(&devx_event_table->event_xa,
2115 event_sub->xa_key_level1);
2116 WARN_ON(!event);
2117
2118 if (!obj) {
2119 list_add_tail_rcu(&event_sub->xa_list,
2120 &event->unaffiliated_list);
2121 continue;
2122 }
2123
2124 obj_event = xa_load(&event->object_ids, obj_id);
2125 WARN_ON(!obj_event);
2126 list_add_tail_rcu(&event_sub->xa_list,
2127 &obj_event->obj_sub_list);
2128 list_add_tail_rcu(&event_sub->obj_list,
2129 &obj->event_sub);
2130 }
2131
2132 mutex_unlock(&devx_event_table->event_xa_lock);
2133 return 0;
2134
2135err:
2136 list_for_each_entry_safe(event_sub, tmp_sub, &sub_list, event_list) {
2137 list_del(&event_sub->event_list);
2138
2139 subscribe_event_xa_dealloc(devx_event_table,
2140 event_sub->xa_key_level1,
2141 obj,
2142 obj_id);
2143
2144 if (event_sub->eventfd)
2145 eventfd_ctx_put(event_sub->eventfd);
2146 uverbs_uobject_put(&event_sub->ev_file->uobj);
2147 kfree(event_sub);
2148 }
2149
2150 mutex_unlock(&devx_event_table->event_xa_lock);
2151 return err;
2152}
2153
2154static int devx_umem_get(struct mlx5_ib_dev *dev, struct ib_ucontext *ucontext,
2155 struct uverbs_attr_bundle *attrs,
2156 struct devx_umem *obj)
2157{
2158 u64 addr;
2159 size_t size;
2160 u32 access;
2161 int err;
2162
2163 if (uverbs_copy_from(&addr, attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_ADDR) ||
2164 uverbs_copy_from(&size, attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_LEN))
2165 return -EFAULT;
2166
2167 err = uverbs_get_flags32(&access, attrs,
2168 MLX5_IB_ATTR_DEVX_UMEM_REG_ACCESS,
2169 IB_ACCESS_LOCAL_WRITE |
2170 IB_ACCESS_REMOTE_WRITE |
2171 IB_ACCESS_REMOTE_READ);
2172 if (err)
2173 return err;
2174
2175 err = ib_check_mr_access(&dev->ib_dev, access);
2176 if (err)
2177 return err;
2178
2179 obj->umem = ib_umem_get(&attrs->driver_udata, addr, size, access);
2180 if (IS_ERR(obj->umem))
2181 return PTR_ERR(obj->umem);
2182 return 0;
2183}
2184
2185static unsigned int devx_umem_find_best_pgsize(struct ib_umem *umem,
2186 unsigned long pgsz_bitmap)
2187{
2188 unsigned long page_size;
2189
2190
2191
2192
2193 pgsz_bitmap &= GENMASK_ULL(max_t(u64, order_base_2(umem->length),
2194 PAGE_SHIFT),
2195 MLX5_ADAPTER_PAGE_SHIFT);
2196 if (!pgsz_bitmap)
2197 return 0;
2198
2199 page_size = ib_umem_find_best_pgoff(umem, pgsz_bitmap, U64_MAX);
2200 if (!page_size)
2201 return 0;
2202
2203
2204
2205
2206
2207
2208
2209 while ((ib_umem_dma_offset(umem, page_size) != 0 ||
2210 (umem->length % page_size) != 0) &&
2211 page_size > PAGE_SIZE)
2212 page_size /= 2;
2213
2214 return page_size;
2215}
2216
2217static int devx_umem_reg_cmd_alloc(struct mlx5_ib_dev *dev,
2218 struct uverbs_attr_bundle *attrs,
2219 struct devx_umem *obj,
2220 struct devx_umem_reg_cmd *cmd)
2221{
2222 unsigned long pgsz_bitmap;
2223 unsigned int page_size;
2224 __be64 *mtt;
2225 void *umem;
2226 int ret;
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240 ret = uverbs_get_const_default(&pgsz_bitmap, attrs,
2241 MLX5_IB_ATTR_DEVX_UMEM_REG_PGSZ_BITMAP,
2242 GENMASK_ULL(63,
2243 min(PAGE_SHIFT, MLX5_ADAPTER_PAGE_SHIFT)));
2244 if (ret)
2245 return ret;
2246
2247 page_size = devx_umem_find_best_pgsize(obj->umem, pgsz_bitmap);
2248 if (!page_size)
2249 return -EINVAL;
2250
2251 cmd->inlen = MLX5_ST_SZ_BYTES(create_umem_in) +
2252 (MLX5_ST_SZ_BYTES(mtt) *
2253 ib_umem_num_dma_blocks(obj->umem, page_size));
2254 cmd->in = uverbs_zalloc(attrs, cmd->inlen);
2255 if (IS_ERR(cmd->in))
2256 return PTR_ERR(cmd->in);
2257
2258 umem = MLX5_ADDR_OF(create_umem_in, cmd->in, umem);
2259 mtt = (__be64 *)MLX5_ADDR_OF(umem, umem, mtt);
2260
2261 MLX5_SET(create_umem_in, cmd->in, opcode, MLX5_CMD_OP_CREATE_UMEM);
2262 MLX5_SET64(umem, umem, num_of_mtt,
2263 ib_umem_num_dma_blocks(obj->umem, page_size));
2264 MLX5_SET(umem, umem, log_page_size,
2265 order_base_2(page_size) - MLX5_ADAPTER_PAGE_SHIFT);
2266 MLX5_SET(umem, umem, page_offset,
2267 ib_umem_dma_offset(obj->umem, page_size));
2268
2269 mlx5_ib_populate_pas(obj->umem, page_size, mtt,
2270 (obj->umem->writable ? MLX5_IB_MTT_WRITE : 0) |
2271 MLX5_IB_MTT_READ);
2272 return 0;
2273}
2274
2275static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_UMEM_REG)(
2276 struct uverbs_attr_bundle *attrs)
2277{
2278 struct devx_umem_reg_cmd cmd;
2279 struct devx_umem *obj;
2280 struct ib_uobject *uobj = uverbs_attr_get_uobject(
2281 attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE);
2282 u32 obj_id;
2283 struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context(
2284 &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext);
2285 struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device);
2286 int err;
2287
2288 if (!c->devx_uid)
2289 return -EINVAL;
2290
2291 obj = kzalloc(sizeof(struct devx_umem), GFP_KERNEL);
2292 if (!obj)
2293 return -ENOMEM;
2294
2295 err = devx_umem_get(dev, &c->ibucontext, attrs, obj);
2296 if (err)
2297 goto err_obj_free;
2298
2299 err = devx_umem_reg_cmd_alloc(dev, attrs, obj, &cmd);
2300 if (err)
2301 goto err_umem_release;
2302
2303 MLX5_SET(create_umem_in, cmd.in, uid, c->devx_uid);
2304 err = mlx5_cmd_exec(dev->mdev, cmd.in, cmd.inlen, cmd.out,
2305 sizeof(cmd.out));
2306 if (err)
2307 goto err_umem_release;
2308
2309 obj->mdev = dev->mdev;
2310 uobj->object = obj;
2311 devx_obj_build_destroy_cmd(cmd.in, cmd.out, obj->dinbox, &obj->dinlen, &obj_id);
2312 uverbs_finalize_uobj_create(attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE);
2313
2314 err = uverbs_copy_to(attrs, MLX5_IB_ATTR_DEVX_UMEM_REG_OUT_ID, &obj_id,
2315 sizeof(obj_id));
2316 return err;
2317
2318err_umem_release:
2319 ib_umem_release(obj->umem);
2320err_obj_free:
2321 kfree(obj);
2322 return err;
2323}
2324
2325static int devx_umem_cleanup(struct ib_uobject *uobject,
2326 enum rdma_remove_reason why,
2327 struct uverbs_attr_bundle *attrs)
2328{
2329 struct devx_umem *obj = uobject->object;
2330 u32 out[MLX5_ST_SZ_DW(general_obj_out_cmd_hdr)];
2331 int err;
2332
2333 err = mlx5_cmd_exec(obj->mdev, obj->dinbox, obj->dinlen, out, sizeof(out));
2334 if (err)
2335 return err;
2336
2337 ib_umem_release(obj->umem);
2338 kfree(obj);
2339 return 0;
2340}
2341
2342static bool is_unaffiliated_event(struct mlx5_core_dev *dev,
2343 unsigned long event_type)
2344{
2345 __be64 *unaff_events;
2346 int mask_entry;
2347 int mask_bit;
2348
2349 if (!MLX5_CAP_GEN(dev, event_cap))
2350 return is_legacy_unaffiliated_event_num(event_type);
2351
2352 unaff_events = MLX5_CAP_DEV_EVENT(dev,
2353 user_unaffiliated_events);
2354 WARN_ON(event_type > MAX_SUPP_EVENT_NUM);
2355
2356 mask_entry = event_type / 64;
2357 mask_bit = event_type % 64;
2358
2359 if (!(be64_to_cpu(unaff_events[mask_entry]) & (1ull << mask_bit)))
2360 return false;
2361
2362 return true;
2363}
2364
2365static u32 devx_get_obj_id_from_event(unsigned long event_type, void *data)
2366{
2367 struct mlx5_eqe *eqe = data;
2368 u32 obj_id = 0;
2369
2370 switch (event_type) {
2371 case MLX5_EVENT_TYPE_SRQ_CATAS_ERROR:
2372 case MLX5_EVENT_TYPE_SRQ_RQ_LIMIT:
2373 case MLX5_EVENT_TYPE_PATH_MIG:
2374 case MLX5_EVENT_TYPE_COMM_EST:
2375 case MLX5_EVENT_TYPE_SQ_DRAINED:
2376 case MLX5_EVENT_TYPE_SRQ_LAST_WQE:
2377 case MLX5_EVENT_TYPE_WQ_CATAS_ERROR:
2378 case MLX5_EVENT_TYPE_PATH_MIG_FAILED:
2379 case MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR:
2380 case MLX5_EVENT_TYPE_WQ_ACCESS_ERROR:
2381 obj_id = be32_to_cpu(eqe->data.qp_srq.qp_srq_n) & 0xffffff;
2382 break;
2383 case MLX5_EVENT_TYPE_XRQ_ERROR:
2384 obj_id = be32_to_cpu(eqe->data.xrq_err.type_xrqn) & 0xffffff;
2385 break;
2386 case MLX5_EVENT_TYPE_DCT_DRAINED:
2387 case MLX5_EVENT_TYPE_DCT_KEY_VIOLATION:
2388 obj_id = be32_to_cpu(eqe->data.dct.dctn) & 0xffffff;
2389 break;
2390 case MLX5_EVENT_TYPE_CQ_ERROR:
2391 obj_id = be32_to_cpu(eqe->data.cq_err.cqn) & 0xffffff;
2392 break;
2393 default:
2394 obj_id = MLX5_GET(affiliated_event_header, &eqe->data, obj_id);
2395 break;
2396 }
2397
2398 return obj_id;
2399}
2400
2401static int deliver_event(struct devx_event_subscription *event_sub,
2402 const void *data)
2403{
2404 struct devx_async_event_file *ev_file;
2405 struct devx_async_event_data *event_data;
2406 unsigned long flags;
2407
2408 ev_file = event_sub->ev_file;
2409
2410 if (ev_file->omit_data) {
2411 spin_lock_irqsave(&ev_file->lock, flags);
2412 if (!list_empty(&event_sub->event_list) ||
2413 ev_file->is_destroyed) {
2414 spin_unlock_irqrestore(&ev_file->lock, flags);
2415 return 0;
2416 }
2417
2418 list_add_tail(&event_sub->event_list, &ev_file->event_list);
2419 spin_unlock_irqrestore(&ev_file->lock, flags);
2420 wake_up_interruptible(&ev_file->poll_wait);
2421 return 0;
2422 }
2423
2424 event_data = kzalloc(sizeof(*event_data) + sizeof(struct mlx5_eqe),
2425 GFP_ATOMIC);
2426 if (!event_data) {
2427 spin_lock_irqsave(&ev_file->lock, flags);
2428 ev_file->is_overflow_err = 1;
2429 spin_unlock_irqrestore(&ev_file->lock, flags);
2430 return -ENOMEM;
2431 }
2432
2433 event_data->hdr.cookie = event_sub->cookie;
2434 memcpy(event_data->hdr.out_data, data, sizeof(struct mlx5_eqe));
2435
2436 spin_lock_irqsave(&ev_file->lock, flags);
2437 if (!ev_file->is_destroyed)
2438 list_add_tail(&event_data->list, &ev_file->event_list);
2439 else
2440 kfree(event_data);
2441 spin_unlock_irqrestore(&ev_file->lock, flags);
2442 wake_up_interruptible(&ev_file->poll_wait);
2443
2444 return 0;
2445}
2446
2447static void dispatch_event_fd(struct list_head *fd_list,
2448 const void *data)
2449{
2450 struct devx_event_subscription *item;
2451
2452 list_for_each_entry_rcu(item, fd_list, xa_list) {
2453 if (item->eventfd)
2454 eventfd_signal(item->eventfd, 1);
2455 else
2456 deliver_event(item, data);
2457 }
2458}
2459
2460static int devx_event_notifier(struct notifier_block *nb,
2461 unsigned long event_type, void *data)
2462{
2463 struct mlx5_devx_event_table *table;
2464 struct mlx5_ib_dev *dev;
2465 struct devx_event *event;
2466 struct devx_obj_event *obj_event;
2467 u16 obj_type = 0;
2468 bool is_unaffiliated;
2469 u32 obj_id;
2470
2471
2472 if (event_type == MLX5_EVENT_TYPE_CMD ||
2473 event_type == MLX5_EVENT_TYPE_PAGE_REQUEST)
2474 return NOTIFY_OK;
2475
2476 table = container_of(nb, struct mlx5_devx_event_table, devx_nb.nb);
2477 dev = container_of(table, struct mlx5_ib_dev, devx_event_table);
2478 is_unaffiliated = is_unaffiliated_event(dev->mdev, event_type);
2479
2480 if (!is_unaffiliated)
2481 obj_type = get_event_obj_type(event_type, data);
2482
2483 rcu_read_lock();
2484 event = xa_load(&table->event_xa, event_type | (obj_type << 16));
2485 if (!event) {
2486 rcu_read_unlock();
2487 return NOTIFY_DONE;
2488 }
2489
2490 if (is_unaffiliated) {
2491 dispatch_event_fd(&event->unaffiliated_list, data);
2492 rcu_read_unlock();
2493 return NOTIFY_OK;
2494 }
2495
2496 obj_id = devx_get_obj_id_from_event(event_type, data);
2497 obj_event = xa_load(&event->object_ids, obj_id);
2498 if (!obj_event) {
2499 rcu_read_unlock();
2500 return NOTIFY_DONE;
2501 }
2502
2503 dispatch_event_fd(&obj_event->obj_sub_list, data);
2504
2505 rcu_read_unlock();
2506 return NOTIFY_OK;
2507}
2508
2509int mlx5_ib_devx_init(struct mlx5_ib_dev *dev)
2510{
2511 struct mlx5_devx_event_table *table = &dev->devx_event_table;
2512 int uid;
2513
2514 uid = mlx5_ib_devx_create(dev, false);
2515 if (uid > 0) {
2516 dev->devx_whitelist_uid = uid;
2517 xa_init(&table->event_xa);
2518 mutex_init(&table->event_xa_lock);
2519 MLX5_NB_INIT(&table->devx_nb, devx_event_notifier, NOTIFY_ANY);
2520 mlx5_eq_notifier_register(dev->mdev, &table->devx_nb);
2521 }
2522
2523 return 0;
2524}
2525
2526void mlx5_ib_devx_cleanup(struct mlx5_ib_dev *dev)
2527{
2528 struct mlx5_devx_event_table *table = &dev->devx_event_table;
2529 struct devx_event_subscription *sub, *tmp;
2530 struct devx_event *event;
2531 void *entry;
2532 unsigned long id;
2533
2534 if (dev->devx_whitelist_uid) {
2535 mlx5_eq_notifier_unregister(dev->mdev, &table->devx_nb);
2536 mutex_lock(&dev->devx_event_table.event_xa_lock);
2537 xa_for_each(&table->event_xa, id, entry) {
2538 event = entry;
2539 list_for_each_entry_safe(
2540 sub, tmp, &event->unaffiliated_list, xa_list)
2541 devx_cleanup_subscription(dev, sub);
2542 kfree(entry);
2543 }
2544 mutex_unlock(&dev->devx_event_table.event_xa_lock);
2545 xa_destroy(&table->event_xa);
2546
2547 mlx5_ib_devx_destroy(dev, dev->devx_whitelist_uid);
2548 }
2549}
2550
2551static ssize_t devx_async_cmd_event_read(struct file *filp, char __user *buf,
2552 size_t count, loff_t *pos)
2553{
2554 struct devx_async_cmd_event_file *comp_ev_file = filp->private_data;
2555 struct devx_async_event_queue *ev_queue = &comp_ev_file->ev_queue;
2556 struct devx_async_data *event;
2557 int ret = 0;
2558 size_t eventsz;
2559
2560 spin_lock_irq(&ev_queue->lock);
2561
2562 while (list_empty(&ev_queue->event_list)) {
2563 spin_unlock_irq(&ev_queue->lock);
2564
2565 if (filp->f_flags & O_NONBLOCK)
2566 return -EAGAIN;
2567
2568 if (wait_event_interruptible(
2569 ev_queue->poll_wait,
2570 (!list_empty(&ev_queue->event_list) ||
2571 ev_queue->is_destroyed))) {
2572 return -ERESTARTSYS;
2573 }
2574
2575 spin_lock_irq(&ev_queue->lock);
2576 if (ev_queue->is_destroyed) {
2577 spin_unlock_irq(&ev_queue->lock);
2578 return -EIO;
2579 }
2580 }
2581
2582 event = list_entry(ev_queue->event_list.next,
2583 struct devx_async_data, list);
2584 eventsz = event->cmd_out_len +
2585 sizeof(struct mlx5_ib_uapi_devx_async_cmd_hdr);
2586
2587 if (eventsz > count) {
2588 spin_unlock_irq(&ev_queue->lock);
2589 return -ENOSPC;
2590 }
2591
2592 list_del(ev_queue->event_list.next);
2593 spin_unlock_irq(&ev_queue->lock);
2594
2595 if (copy_to_user(buf, &event->hdr, eventsz))
2596 ret = -EFAULT;
2597 else
2598 ret = eventsz;
2599
2600 atomic_sub(event->cmd_out_len, &ev_queue->bytes_in_use);
2601 kvfree(event);
2602 return ret;
2603}
2604
2605static __poll_t devx_async_cmd_event_poll(struct file *filp,
2606 struct poll_table_struct *wait)
2607{
2608 struct devx_async_cmd_event_file *comp_ev_file = filp->private_data;
2609 struct devx_async_event_queue *ev_queue = &comp_ev_file->ev_queue;
2610 __poll_t pollflags = 0;
2611
2612 poll_wait(filp, &ev_queue->poll_wait, wait);
2613
2614 spin_lock_irq(&ev_queue->lock);
2615 if (ev_queue->is_destroyed)
2616 pollflags = EPOLLIN | EPOLLRDNORM | EPOLLRDHUP;
2617 else if (!list_empty(&ev_queue->event_list))
2618 pollflags = EPOLLIN | EPOLLRDNORM;
2619 spin_unlock_irq(&ev_queue->lock);
2620
2621 return pollflags;
2622}
2623
2624static const struct file_operations devx_async_cmd_event_fops = {
2625 .owner = THIS_MODULE,
2626 .read = devx_async_cmd_event_read,
2627 .poll = devx_async_cmd_event_poll,
2628 .release = uverbs_uobject_fd_release,
2629 .llseek = no_llseek,
2630};
2631
2632static ssize_t devx_async_event_read(struct file *filp, char __user *buf,
2633 size_t count, loff_t *pos)
2634{
2635 struct devx_async_event_file *ev_file = filp->private_data;
2636 struct devx_event_subscription *event_sub;
2637 struct devx_async_event_data *uninitialized_var(event);
2638 int ret = 0;
2639 size_t eventsz;
2640 bool omit_data;
2641 void *event_data;
2642
2643 omit_data = ev_file->omit_data;
2644
2645 spin_lock_irq(&ev_file->lock);
2646
2647 if (ev_file->is_overflow_err) {
2648 ev_file->is_overflow_err = 0;
2649 spin_unlock_irq(&ev_file->lock);
2650 return -EOVERFLOW;
2651 }
2652
2653
2654 while (list_empty(&ev_file->event_list)) {
2655 spin_unlock_irq(&ev_file->lock);
2656
2657 if (filp->f_flags & O_NONBLOCK)
2658 return -EAGAIN;
2659
2660 if (wait_event_interruptible(ev_file->poll_wait,
2661 (!list_empty(&ev_file->event_list) ||
2662 ev_file->is_destroyed))) {
2663 return -ERESTARTSYS;
2664 }
2665
2666 spin_lock_irq(&ev_file->lock);
2667 if (ev_file->is_destroyed) {
2668 spin_unlock_irq(&ev_file->lock);
2669 return -EIO;
2670 }
2671 }
2672
2673 if (omit_data) {
2674 event_sub = list_first_entry(&ev_file->event_list,
2675 struct devx_event_subscription,
2676 event_list);
2677 eventsz = sizeof(event_sub->cookie);
2678 event_data = &event_sub->cookie;
2679 } else {
2680 event = list_first_entry(&ev_file->event_list,
2681 struct devx_async_event_data, list);
2682 eventsz = sizeof(struct mlx5_eqe) +
2683 sizeof(struct mlx5_ib_uapi_devx_async_event_hdr);
2684 event_data = &event->hdr;
2685 }
2686
2687 if (eventsz > count) {
2688 spin_unlock_irq(&ev_file->lock);
2689 return -EINVAL;
2690 }
2691
2692 if (omit_data)
2693 list_del_init(&event_sub->event_list);
2694 else
2695 list_del(&event->list);
2696
2697 spin_unlock_irq(&ev_file->lock);
2698
2699 if (copy_to_user(buf, event_data, eventsz))
2700
2701 ret = -EFAULT;
2702 else
2703 ret = eventsz;
2704
2705 if (!omit_data)
2706 kfree(event);
2707 return ret;
2708}
2709
2710static __poll_t devx_async_event_poll(struct file *filp,
2711 struct poll_table_struct *wait)
2712{
2713 struct devx_async_event_file *ev_file = filp->private_data;
2714 __poll_t pollflags = 0;
2715
2716 poll_wait(filp, &ev_file->poll_wait, wait);
2717
2718 spin_lock_irq(&ev_file->lock);
2719 if (ev_file->is_destroyed)
2720 pollflags = EPOLLIN | EPOLLRDNORM | EPOLLRDHUP;
2721 else if (!list_empty(&ev_file->event_list))
2722 pollflags = EPOLLIN | EPOLLRDNORM;
2723 spin_unlock_irq(&ev_file->lock);
2724
2725 return pollflags;
2726}
2727
2728static void devx_free_subscription(struct rcu_head *rcu)
2729{
2730 struct devx_event_subscription *event_sub =
2731 container_of(rcu, struct devx_event_subscription, rcu);
2732
2733 if (event_sub->eventfd)
2734 eventfd_ctx_put(event_sub->eventfd);
2735 uverbs_uobject_put(&event_sub->ev_file->uobj);
2736 kfree(event_sub);
2737}
2738
2739static const struct file_operations devx_async_event_fops = {
2740 .owner = THIS_MODULE,
2741 .read = devx_async_event_read,
2742 .poll = devx_async_event_poll,
2743 .release = uverbs_uobject_fd_release,
2744 .llseek = no_llseek,
2745};
2746
2747static void devx_async_cmd_event_destroy_uobj(struct ib_uobject *uobj,
2748 enum rdma_remove_reason why)
2749{
2750 struct devx_async_cmd_event_file *comp_ev_file =
2751 container_of(uobj, struct devx_async_cmd_event_file,
2752 uobj);
2753 struct devx_async_event_queue *ev_queue = &comp_ev_file->ev_queue;
2754 struct devx_async_data *entry, *tmp;
2755
2756 spin_lock_irq(&ev_queue->lock);
2757 ev_queue->is_destroyed = 1;
2758 spin_unlock_irq(&ev_queue->lock);
2759 wake_up_interruptible(&ev_queue->poll_wait);
2760
2761 mlx5_cmd_cleanup_async_ctx(&comp_ev_file->async_ctx);
2762
2763 spin_lock_irq(&comp_ev_file->ev_queue.lock);
2764 list_for_each_entry_safe(entry, tmp,
2765 &comp_ev_file->ev_queue.event_list, list) {
2766 list_del(&entry->list);
2767 kvfree(entry);
2768 }
2769 spin_unlock_irq(&comp_ev_file->ev_queue.lock);
2770};
2771
2772static void devx_async_event_destroy_uobj(struct ib_uobject *uobj,
2773 enum rdma_remove_reason why)
2774{
2775 struct devx_async_event_file *ev_file =
2776 container_of(uobj, struct devx_async_event_file,
2777 uobj);
2778 struct devx_event_subscription *event_sub, *event_sub_tmp;
2779 struct mlx5_ib_dev *dev = ev_file->dev;
2780
2781 spin_lock_irq(&ev_file->lock);
2782 ev_file->is_destroyed = 1;
2783
2784
2785 if (ev_file->omit_data) {
2786 struct devx_event_subscription *event_sub, *tmp;
2787
2788 list_for_each_entry_safe(event_sub, tmp, &ev_file->event_list,
2789 event_list)
2790 list_del_init(&event_sub->event_list);
2791
2792 } else {
2793 struct devx_async_event_data *entry, *tmp;
2794
2795 list_for_each_entry_safe(entry, tmp, &ev_file->event_list,
2796 list) {
2797 list_del(&entry->list);
2798 kfree(entry);
2799 }
2800 }
2801
2802 spin_unlock_irq(&ev_file->lock);
2803 wake_up_interruptible(&ev_file->poll_wait);
2804
2805 mutex_lock(&dev->devx_event_table.event_xa_lock);
2806
2807 list_for_each_entry_safe(event_sub, event_sub_tmp,
2808 &ev_file->subscribed_events_list, file_list) {
2809 devx_cleanup_subscription(dev, event_sub);
2810 list_del_rcu(&event_sub->file_list);
2811
2812 call_rcu(&event_sub->rcu, devx_free_subscription);
2813 }
2814 mutex_unlock(&dev->devx_event_table.event_xa_lock);
2815
2816 put_device(&dev->ib_dev.dev);
2817};
2818
2819DECLARE_UVERBS_NAMED_METHOD(
2820 MLX5_IB_METHOD_DEVX_UMEM_REG,
2821 UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE,
2822 MLX5_IB_OBJECT_DEVX_UMEM,
2823 UVERBS_ACCESS_NEW,
2824 UA_MANDATORY),
2825 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_ADDR,
2826 UVERBS_ATTR_TYPE(u64),
2827 UA_MANDATORY),
2828 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_LEN,
2829 UVERBS_ATTR_TYPE(u64),
2830 UA_MANDATORY),
2831 UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_ACCESS,
2832 enum ib_access_flags),
2833 UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_DEVX_UMEM_REG_PGSZ_BITMAP,
2834 u64),
2835 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_UMEM_REG_OUT_ID,
2836 UVERBS_ATTR_TYPE(u32),
2837 UA_MANDATORY));
2838
2839DECLARE_UVERBS_NAMED_METHOD_DESTROY(
2840 MLX5_IB_METHOD_DEVX_UMEM_DEREG,
2841 UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_UMEM_DEREG_HANDLE,
2842 MLX5_IB_OBJECT_DEVX_UMEM,
2843 UVERBS_ACCESS_DESTROY,
2844 UA_MANDATORY));
2845
2846DECLARE_UVERBS_NAMED_METHOD(
2847 MLX5_IB_METHOD_DEVX_QUERY_EQN,
2848 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_QUERY_EQN_USER_VEC,
2849 UVERBS_ATTR_TYPE(u32),
2850 UA_MANDATORY),
2851 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_QUERY_EQN_DEV_EQN,
2852 UVERBS_ATTR_TYPE(u32),
2853 UA_MANDATORY));
2854
2855DECLARE_UVERBS_NAMED_METHOD(
2856 MLX5_IB_METHOD_DEVX_QUERY_UAR,
2857 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_QUERY_UAR_USER_IDX,
2858 UVERBS_ATTR_TYPE(u32),
2859 UA_MANDATORY),
2860 UVERBS_ATTR_PTR_OUT(MLX5_IB_ATTR_DEVX_QUERY_UAR_DEV_IDX,
2861 UVERBS_ATTR_TYPE(u32),
2862 UA_MANDATORY));
2863
2864DECLARE_UVERBS_NAMED_METHOD(
2865 MLX5_IB_METHOD_DEVX_OTHER,
2866 UVERBS_ATTR_PTR_IN(
2867 MLX5_IB_ATTR_DEVX_OTHER_CMD_IN,
2868 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
2869 UA_MANDATORY,
2870 UA_ALLOC_AND_COPY),
2871 UVERBS_ATTR_PTR_OUT(
2872 MLX5_IB_ATTR_DEVX_OTHER_CMD_OUT,
2873 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
2874 UA_MANDATORY));
2875
2876DECLARE_UVERBS_NAMED_METHOD(
2877 MLX5_IB_METHOD_DEVX_OBJ_CREATE,
2878 UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_CREATE_HANDLE,
2879 MLX5_IB_OBJECT_DEVX_OBJ,
2880 UVERBS_ACCESS_NEW,
2881 UA_MANDATORY),
2882 UVERBS_ATTR_PTR_IN(
2883 MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_IN,
2884 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
2885 UA_MANDATORY,
2886 UA_ALLOC_AND_COPY),
2887 UVERBS_ATTR_PTR_OUT(
2888 MLX5_IB_ATTR_DEVX_OBJ_CREATE_CMD_OUT,
2889 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
2890 UA_MANDATORY));
2891
2892DECLARE_UVERBS_NAMED_METHOD_DESTROY(
2893 MLX5_IB_METHOD_DEVX_OBJ_DESTROY,
2894 UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_DESTROY_HANDLE,
2895 MLX5_IB_OBJECT_DEVX_OBJ,
2896 UVERBS_ACCESS_DESTROY,
2897 UA_MANDATORY));
2898
2899DECLARE_UVERBS_NAMED_METHOD(
2900 MLX5_IB_METHOD_DEVX_OBJ_MODIFY,
2901 UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_MODIFY_HANDLE,
2902 UVERBS_IDR_ANY_OBJECT,
2903 UVERBS_ACCESS_WRITE,
2904 UA_MANDATORY),
2905 UVERBS_ATTR_PTR_IN(
2906 MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_IN,
2907 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
2908 UA_MANDATORY,
2909 UA_ALLOC_AND_COPY),
2910 UVERBS_ATTR_PTR_OUT(
2911 MLX5_IB_ATTR_DEVX_OBJ_MODIFY_CMD_OUT,
2912 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
2913 UA_MANDATORY));
2914
2915DECLARE_UVERBS_NAMED_METHOD(
2916 MLX5_IB_METHOD_DEVX_OBJ_QUERY,
2917 UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_QUERY_HANDLE,
2918 UVERBS_IDR_ANY_OBJECT,
2919 UVERBS_ACCESS_READ,
2920 UA_MANDATORY),
2921 UVERBS_ATTR_PTR_IN(
2922 MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN,
2923 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
2924 UA_MANDATORY,
2925 UA_ALLOC_AND_COPY),
2926 UVERBS_ATTR_PTR_OUT(
2927 MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_OUT,
2928 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_out_cmd_hdr)),
2929 UA_MANDATORY));
2930
2931DECLARE_UVERBS_NAMED_METHOD(
2932 MLX5_IB_METHOD_DEVX_OBJ_ASYNC_QUERY,
2933 UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_OBJ_QUERY_HANDLE,
2934 UVERBS_IDR_ANY_OBJECT,
2935 UVERBS_ACCESS_READ,
2936 UA_MANDATORY),
2937 UVERBS_ATTR_PTR_IN(
2938 MLX5_IB_ATTR_DEVX_OBJ_QUERY_CMD_IN,
2939 UVERBS_ATTR_MIN_SIZE(MLX5_ST_SZ_BYTES(general_obj_in_cmd_hdr)),
2940 UA_MANDATORY,
2941 UA_ALLOC_AND_COPY),
2942 UVERBS_ATTR_CONST_IN(MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_OUT_LEN,
2943 u16, UA_MANDATORY),
2944 UVERBS_ATTR_FD(MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_FD,
2945 MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD,
2946 UVERBS_ACCESS_READ,
2947 UA_MANDATORY),
2948 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_OBJ_QUERY_ASYNC_WR_ID,
2949 UVERBS_ATTR_TYPE(u64),
2950 UA_MANDATORY));
2951
2952DECLARE_UVERBS_NAMED_METHOD(
2953 MLX5_IB_METHOD_DEVX_SUBSCRIBE_EVENT,
2954 UVERBS_ATTR_FD(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_HANDLE,
2955 MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD,
2956 UVERBS_ACCESS_READ,
2957 UA_MANDATORY),
2958 UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_OBJ_HANDLE,
2959 MLX5_IB_OBJECT_DEVX_OBJ,
2960 UVERBS_ACCESS_READ,
2961 UA_OPTIONAL),
2962 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_TYPE_NUM_LIST,
2963 UVERBS_ATTR_MIN_SIZE(sizeof(u16)),
2964 UA_MANDATORY,
2965 UA_ALLOC_AND_COPY),
2966 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_COOKIE,
2967 UVERBS_ATTR_TYPE(u64),
2968 UA_OPTIONAL),
2969 UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_DEVX_SUBSCRIBE_EVENT_FD_NUM,
2970 UVERBS_ATTR_TYPE(u32),
2971 UA_OPTIONAL));
2972
2973DECLARE_UVERBS_GLOBAL_METHODS(MLX5_IB_OBJECT_DEVX,
2974 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OTHER),
2975 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_QUERY_UAR),
2976 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_QUERY_EQN),
2977 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_SUBSCRIBE_EVENT));
2978
2979DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_DEVX_OBJ,
2980 UVERBS_TYPE_ALLOC_IDR(devx_obj_cleanup),
2981 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_CREATE),
2982 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_DESTROY),
2983 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_MODIFY),
2984 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_QUERY),
2985 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_OBJ_ASYNC_QUERY));
2986
2987DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_DEVX_UMEM,
2988 UVERBS_TYPE_ALLOC_IDR(devx_umem_cleanup),
2989 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_UMEM_REG),
2990 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_UMEM_DEREG));
2991
2992
2993DECLARE_UVERBS_NAMED_METHOD(
2994 MLX5_IB_METHOD_DEVX_ASYNC_CMD_FD_ALLOC,
2995 UVERBS_ATTR_FD(MLX5_IB_ATTR_DEVX_ASYNC_CMD_FD_ALLOC_HANDLE,
2996 MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD,
2997 UVERBS_ACCESS_NEW,
2998 UA_MANDATORY));
2999
3000DECLARE_UVERBS_NAMED_OBJECT(
3001 MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD,
3002 UVERBS_TYPE_ALLOC_FD(sizeof(struct devx_async_cmd_event_file),
3003 devx_async_cmd_event_destroy_uobj,
3004 &devx_async_cmd_event_fops, "[devx_async_cmd]",
3005 O_RDONLY),
3006 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_ASYNC_CMD_FD_ALLOC));
3007
3008DECLARE_UVERBS_NAMED_METHOD(
3009 MLX5_IB_METHOD_DEVX_ASYNC_EVENT_FD_ALLOC,
3010 UVERBS_ATTR_FD(MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_HANDLE,
3011 MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD,
3012 UVERBS_ACCESS_NEW,
3013 UA_MANDATORY),
3014 UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_FLAGS,
3015 enum mlx5_ib_uapi_devx_create_event_channel_flags,
3016 UA_MANDATORY));
3017
3018DECLARE_UVERBS_NAMED_OBJECT(
3019 MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD,
3020 UVERBS_TYPE_ALLOC_FD(sizeof(struct devx_async_event_file),
3021 devx_async_event_destroy_uobj,
3022 &devx_async_event_fops, "[devx_async_event]",
3023 O_RDONLY),
3024 &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_ASYNC_EVENT_FD_ALLOC));
3025
3026static bool devx_is_supported(struct ib_device *device)
3027{
3028 struct mlx5_ib_dev *dev = to_mdev(device);
3029
3030 return MLX5_CAP_GEN(dev->mdev, log_max_uctx);
3031}
3032
3033const struct uapi_definition mlx5_ib_devx_defs[] = {
3034 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
3035 MLX5_IB_OBJECT_DEVX,
3036 UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)),
3037 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
3038 MLX5_IB_OBJECT_DEVX_OBJ,
3039 UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)),
3040 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
3041 MLX5_IB_OBJECT_DEVX_UMEM,
3042 UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)),
3043 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
3044 MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD,
3045 UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)),
3046 UAPI_DEF_CHAIN_OBJ_TREE_NAMED(
3047 MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD,
3048 UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)),
3049 {},
3050};
3051
