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34#include <linux/gfp.h>
35#include <linux/export.h>
36#include <linux/mlx5/cmd.h>
37#include <linux/mlx5/qp.h>
38#include <linux/mlx5/driver.h>
39#include <linux/mlx5/transobj.h>
40
41#include "mlx5_core.h"
42
43static struct mlx5_core_rsc_common *mlx5_get_rsc(struct mlx5_core_dev *dev,
44 u32 rsn)
45{
46 struct mlx5_qp_table *table = &dev->priv.qp_table;
47 struct mlx5_core_rsc_common *common;
48
49 spin_lock(&table->lock);
50
51 common = radix_tree_lookup(&table->tree, rsn);
52 if (common)
53 atomic_inc(&common->refcount);
54
55 spin_unlock(&table->lock);
56
57 if (!common) {
58 mlx5_core_warn(dev, "Async event for bogus resource 0x%x\n",
59 rsn);
60 return NULL;
61 }
62 return common;
63}
64
65void mlx5_core_put_rsc(struct mlx5_core_rsc_common *common)
66{
67 if (atomic_dec_and_test(&common->refcount))
68 complete(&common->free);
69}
70
71static u64 qp_allowed_event_types(void)
72{
73 u64 mask;
74
75 mask = BIT(MLX5_EVENT_TYPE_PATH_MIG) |
76 BIT(MLX5_EVENT_TYPE_COMM_EST) |
77 BIT(MLX5_EVENT_TYPE_SQ_DRAINED) |
78 BIT(MLX5_EVENT_TYPE_SRQ_LAST_WQE) |
79 BIT(MLX5_EVENT_TYPE_WQ_CATAS_ERROR) |
80 BIT(MLX5_EVENT_TYPE_PATH_MIG_FAILED) |
81 BIT(MLX5_EVENT_TYPE_WQ_INVAL_REQ_ERROR) |
82 BIT(MLX5_EVENT_TYPE_WQ_ACCESS_ERROR);
83
84 return mask;
85}
86
87static u64 rq_allowed_event_types(void)
88{
89 u64 mask;
90
91 mask = BIT(MLX5_EVENT_TYPE_SRQ_LAST_WQE) |
92 BIT(MLX5_EVENT_TYPE_WQ_CATAS_ERROR);
93
94 return mask;
95}
96
97static u64 sq_allowed_event_types(void)
98{
99 return BIT(MLX5_EVENT_TYPE_WQ_CATAS_ERROR);
100}
101
102static bool is_event_type_allowed(int rsc_type, int event_type)
103{
104 switch (rsc_type) {
105 case MLX5_EVENT_QUEUE_TYPE_QP:
106 return BIT(event_type) & qp_allowed_event_types();
107 case MLX5_EVENT_QUEUE_TYPE_RQ:
108 return BIT(event_type) & rq_allowed_event_types();
109 case MLX5_EVENT_QUEUE_TYPE_SQ:
110 return BIT(event_type) & sq_allowed_event_types();
111 default:
112 WARN(1, "Event arrived for unknown resource type");
113 return false;
114 }
115}
116
117void mlx5_rsc_event(struct mlx5_core_dev *dev, u32 rsn, int event_type)
118{
119 struct mlx5_core_rsc_common *common = mlx5_get_rsc(dev, rsn);
120 struct mlx5_core_qp *qp;
121
122 if (!common)
123 return;
124
125 if (!is_event_type_allowed((rsn >> MLX5_USER_INDEX_LEN), event_type)) {
126 mlx5_core_warn(dev, "event 0x%.2x is not allowed on resource 0x%.8x\n",
127 event_type, rsn);
128 return;
129 }
130
131 switch (common->res) {
132 case MLX5_RES_QP:
133 case MLX5_RES_RQ:
134 case MLX5_RES_SQ:
135 qp = (struct mlx5_core_qp *)common;
136 qp->event(qp, event_type);
137 break;
138
139 default:
140 mlx5_core_warn(dev, "invalid resource type for 0x%x\n", rsn);
141 }
142
143 mlx5_core_put_rsc(common);
144}
145
146static int create_qprqsq_common(struct mlx5_core_dev *dev,
147 struct mlx5_core_qp *qp,
148 int rsc_type)
149{
150 struct mlx5_qp_table *table = &dev->priv.qp_table;
151 int err;
152
153 qp->common.res = rsc_type;
154 spin_lock_irq(&table->lock);
155 err = radix_tree_insert(&table->tree,
156 qp->qpn | (rsc_type << MLX5_USER_INDEX_LEN),
157 qp);
158 spin_unlock_irq(&table->lock);
159 if (err)
160 return err;
161
162 atomic_set(&qp->common.refcount, 1);
163 init_completion(&qp->common.free);
164 qp->pid = current->pid;
165
166 return 0;
167}
168
169static void destroy_qprqsq_common(struct mlx5_core_dev *dev,
170 struct mlx5_core_qp *qp)
171{
172 struct mlx5_qp_table *table = &dev->priv.qp_table;
173 unsigned long flags;
174
175 spin_lock_irqsave(&table->lock, flags);
176 radix_tree_delete(&table->tree,
177 qp->qpn | (qp->common.res << MLX5_USER_INDEX_LEN));
178 spin_unlock_irqrestore(&table->lock, flags);
179 mlx5_core_put_rsc((struct mlx5_core_rsc_common *)qp);
180 wait_for_completion(&qp->common.free);
181}
182
183int mlx5_core_create_qp(struct mlx5_core_dev *dev,
184 struct mlx5_core_qp *qp,
185 u32 *in, int inlen)
186{
187 u32 out[MLX5_ST_SZ_DW(create_qp_out)] = {0};
188 u32 dout[MLX5_ST_SZ_DW(destroy_qp_out)];
189 u32 din[MLX5_ST_SZ_DW(destroy_qp_in)];
190 int err;
191
192 MLX5_SET(create_qp_in, in, opcode, MLX5_CMD_OP_CREATE_QP);
193
194 err = mlx5_cmd_exec(dev, in, inlen, out, sizeof(out));
195 if (err)
196 return err;
197
198 qp->qpn = MLX5_GET(create_qp_out, out, qpn);
199 mlx5_core_dbg(dev, "qpn = 0x%x\n", qp->qpn);
200
201 err = create_qprqsq_common(dev, qp, MLX5_RES_QP);
202 if (err)
203 goto err_cmd;
204
205 err = mlx5_debug_qp_add(dev, qp);
206 if (err)
207 mlx5_core_dbg(dev, "failed adding QP 0x%x to debug file system\n",
208 qp->qpn);
209
210 atomic_inc(&dev->num_qps);
211
212 return 0;
213
214err_cmd:
215 memset(din, 0, sizeof(din));
216 memset(dout, 0, sizeof(dout));
217 MLX5_SET(destroy_qp_in, in, opcode, MLX5_CMD_OP_DESTROY_QP);
218 MLX5_SET(destroy_qp_in, in, qpn, qp->qpn);
219 mlx5_cmd_exec(dev, din, sizeof(din), dout, sizeof(dout));
220 return err;
221}
222EXPORT_SYMBOL_GPL(mlx5_core_create_qp);
223
224int mlx5_core_destroy_qp(struct mlx5_core_dev *dev,
225 struct mlx5_core_qp *qp)
226{
227 u32 out[MLX5_ST_SZ_DW(destroy_qp_out)] = {0};
228 u32 in[MLX5_ST_SZ_DW(destroy_qp_in)] = {0};
229 int err;
230
231 mlx5_debug_qp_remove(dev, qp);
232
233 destroy_qprqsq_common(dev, qp);
234
235 MLX5_SET(destroy_qp_in, in, opcode, MLX5_CMD_OP_DESTROY_QP);
236 MLX5_SET(destroy_qp_in, in, qpn, qp->qpn);
237 err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
238 if (err)
239 return err;
240
241 atomic_dec(&dev->num_qps);
242 return 0;
243}
244EXPORT_SYMBOL_GPL(mlx5_core_destroy_qp);
245
246struct mbox_info {
247 u32 *in;
248 u32 *out;
249 int inlen;
250 int outlen;
251};
252
253static int mbox_alloc(struct mbox_info *mbox, int inlen, int outlen)
254{
255 mbox->inlen = inlen;
256 mbox->outlen = outlen;
257 mbox->in = kzalloc(mbox->inlen, GFP_KERNEL);
258 mbox->out = kzalloc(mbox->outlen, GFP_KERNEL);
259 if (!mbox->in || !mbox->out) {
260 kfree(mbox->in);
261 kfree(mbox->out);
262 return -ENOMEM;
263 }
264
265 return 0;
266}
267
268static void mbox_free(struct mbox_info *mbox)
269{
270 kfree(mbox->in);
271 kfree(mbox->out);
272}
273
274static int modify_qp_mbox_alloc(struct mlx5_core_dev *dev, u16 opcode, int qpn,
275 u32 opt_param_mask, void *qpc,
276 struct mbox_info *mbox)
277{
278 mbox->out = NULL;
279 mbox->in = NULL;
280
281#define MBOX_ALLOC(mbox, typ) \
282 mbox_alloc(mbox, MLX5_ST_SZ_BYTES(typ##_in), MLX5_ST_SZ_BYTES(typ##_out))
283
284#define MOD_QP_IN_SET(typ, in, _opcode, _qpn) \
285 MLX5_SET(typ##_in, in, opcode, _opcode); \
286 MLX5_SET(typ##_in, in, qpn, _qpn)
287
288#define MOD_QP_IN_SET_QPC(typ, in, _opcode, _qpn, _opt_p, _qpc) \
289 MOD_QP_IN_SET(typ, in, _opcode, _qpn); \
290 MLX5_SET(typ##_in, in, opt_param_mask, _opt_p); \
291 memcpy(MLX5_ADDR_OF(typ##_in, in, qpc), _qpc, MLX5_ST_SZ_BYTES(qpc))
292
293 switch (opcode) {
294
295 case MLX5_CMD_OP_2RST_QP:
296 if (MBOX_ALLOC(mbox, qp_2rst))
297 return -ENOMEM;
298 MOD_QP_IN_SET(qp_2rst, mbox->in, opcode, qpn);
299 break;
300 case MLX5_CMD_OP_2ERR_QP:
301 if (MBOX_ALLOC(mbox, qp_2err))
302 return -ENOMEM;
303 MOD_QP_IN_SET(qp_2err, mbox->in, opcode, qpn);
304 break;
305
306
307 case MLX5_CMD_OP_RST2INIT_QP:
308 if (MBOX_ALLOC(mbox, rst2init_qp))
309 return -ENOMEM;
310 MOD_QP_IN_SET_QPC(rst2init_qp, mbox->in, opcode, qpn,
311 opt_param_mask, qpc);
312 break;
313 case MLX5_CMD_OP_INIT2RTR_QP:
314 if (MBOX_ALLOC(mbox, init2rtr_qp))
315 return -ENOMEM;
316 MOD_QP_IN_SET_QPC(init2rtr_qp, mbox->in, opcode, qpn,
317 opt_param_mask, qpc);
318 break;
319 case MLX5_CMD_OP_RTR2RTS_QP:
320 if (MBOX_ALLOC(mbox, rtr2rts_qp))
321 return -ENOMEM;
322 MOD_QP_IN_SET_QPC(rtr2rts_qp, mbox->in, opcode, qpn,
323 opt_param_mask, qpc);
324 break;
325 case MLX5_CMD_OP_RTS2RTS_QP:
326 if (MBOX_ALLOC(mbox, rts2rts_qp))
327 return -ENOMEM;
328 MOD_QP_IN_SET_QPC(rts2rts_qp, mbox->in, opcode, qpn,
329 opt_param_mask, qpc);
330 break;
331 case MLX5_CMD_OP_SQERR2RTS_QP:
332 if (MBOX_ALLOC(mbox, sqerr2rts_qp))
333 return -ENOMEM;
334 MOD_QP_IN_SET_QPC(sqerr2rts_qp, mbox->in, opcode, qpn,
335 opt_param_mask, qpc);
336 break;
337 case MLX5_CMD_OP_INIT2INIT_QP:
338 if (MBOX_ALLOC(mbox, init2init_qp))
339 return -ENOMEM;
340 MOD_QP_IN_SET_QPC(init2init_qp, mbox->in, opcode, qpn,
341 opt_param_mask, qpc);
342 break;
343 default:
344 mlx5_core_err(dev, "Unknown transition for modify QP: OP(0x%x) QPN(0x%x)\n",
345 opcode, qpn);
346 return -EINVAL;
347 }
348 return 0;
349}
350
351int mlx5_core_qp_modify(struct mlx5_core_dev *dev, u16 opcode,
352 u32 opt_param_mask, void *qpc,
353 struct mlx5_core_qp *qp)
354{
355 struct mbox_info mbox;
356 int err;
357
358 err = modify_qp_mbox_alloc(dev, opcode, qp->qpn,
359 opt_param_mask, qpc, &mbox);
360 if (err)
361 return err;
362
363 err = mlx5_cmd_exec(dev, mbox.in, mbox.inlen, mbox.out, mbox.outlen);
364 mbox_free(&mbox);
365 return err;
366}
367EXPORT_SYMBOL_GPL(mlx5_core_qp_modify);
368
369void mlx5_init_qp_table(struct mlx5_core_dev *dev)
370{
371 struct mlx5_qp_table *table = &dev->priv.qp_table;
372
373 memset(table, 0, sizeof(*table));
374 spin_lock_init(&table->lock);
375 INIT_RADIX_TREE(&table->tree, GFP_ATOMIC);
376 mlx5_qp_debugfs_init(dev);
377}
378
379void mlx5_cleanup_qp_table(struct mlx5_core_dev *dev)
380{
381 mlx5_qp_debugfs_cleanup(dev);
382}
383
384int mlx5_core_qp_query(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp,
385 u32 *out, int outlen)
386{
387 u32 in[MLX5_ST_SZ_DW(query_qp_in)] = {0};
388
389 MLX5_SET(query_qp_in, in, opcode, MLX5_CMD_OP_QUERY_QP);
390 MLX5_SET(query_qp_in, in, qpn, qp->qpn);
391 return mlx5_cmd_exec(dev, in, sizeof(in), out, outlen);
392}
393EXPORT_SYMBOL_GPL(mlx5_core_qp_query);
394
395int mlx5_core_xrcd_alloc(struct mlx5_core_dev *dev, u32 *xrcdn)
396{
397 u32 out[MLX5_ST_SZ_DW(alloc_xrcd_out)] = {0};
398 u32 in[MLX5_ST_SZ_DW(alloc_xrcd_in)] = {0};
399 int err;
400
401 MLX5_SET(alloc_xrcd_in, in, opcode, MLX5_CMD_OP_ALLOC_XRCD);
402 err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
403 if (!err)
404 *xrcdn = MLX5_GET(alloc_xrcd_out, out, xrcd);
405 return err;
406}
407EXPORT_SYMBOL_GPL(mlx5_core_xrcd_alloc);
408
409int mlx5_core_xrcd_dealloc(struct mlx5_core_dev *dev, u32 xrcdn)
410{
411 u32 out[MLX5_ST_SZ_DW(dealloc_xrcd_out)] = {0};
412 u32 in[MLX5_ST_SZ_DW(dealloc_xrcd_in)] = {0};
413
414 MLX5_SET(dealloc_xrcd_in, in, opcode, MLX5_CMD_OP_DEALLOC_XRCD);
415 MLX5_SET(dealloc_xrcd_in, in, xrcd, xrcdn);
416 return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
417}
418EXPORT_SYMBOL_GPL(mlx5_core_xrcd_dealloc);
419
420int mlx5_core_create_rq_tracked(struct mlx5_core_dev *dev, u32 *in, int inlen,
421 struct mlx5_core_qp *rq)
422{
423 int err;
424 u32 rqn;
425
426 err = mlx5_core_create_rq(dev, in, inlen, &rqn);
427 if (err)
428 return err;
429
430 rq->qpn = rqn;
431 err = create_qprqsq_common(dev, rq, MLX5_RES_RQ);
432 if (err)
433 goto err_destroy_rq;
434
435 return 0;
436
437err_destroy_rq:
438 mlx5_core_destroy_rq(dev, rq->qpn);
439
440 return err;
441}
442EXPORT_SYMBOL(mlx5_core_create_rq_tracked);
443
444void mlx5_core_destroy_rq_tracked(struct mlx5_core_dev *dev,
445 struct mlx5_core_qp *rq)
446{
447 destroy_qprqsq_common(dev, rq);
448 mlx5_core_destroy_rq(dev, rq->qpn);
449}
450EXPORT_SYMBOL(mlx5_core_destroy_rq_tracked);
451
452int mlx5_core_create_sq_tracked(struct mlx5_core_dev *dev, u32 *in, int inlen,
453 struct mlx5_core_qp *sq)
454{
455 int err;
456 u32 sqn;
457
458 err = mlx5_core_create_sq(dev, in, inlen, &sqn);
459 if (err)
460 return err;
461
462 sq->qpn = sqn;
463 err = create_qprqsq_common(dev, sq, MLX5_RES_SQ);
464 if (err)
465 goto err_destroy_sq;
466
467 return 0;
468
469err_destroy_sq:
470 mlx5_core_destroy_sq(dev, sq->qpn);
471
472 return err;
473}
474EXPORT_SYMBOL(mlx5_core_create_sq_tracked);
475
476void mlx5_core_destroy_sq_tracked(struct mlx5_core_dev *dev,
477 struct mlx5_core_qp *sq)
478{
479 destroy_qprqsq_common(dev, sq);
480 mlx5_core_destroy_sq(dev, sq->qpn);
481}
482EXPORT_SYMBOL(mlx5_core_destroy_sq_tracked);
483
484int mlx5_core_alloc_q_counter(struct mlx5_core_dev *dev, u16 *counter_id)
485{
486 u32 in[MLX5_ST_SZ_DW(alloc_q_counter_in)] = {0};
487 u32 out[MLX5_ST_SZ_DW(alloc_q_counter_out)] = {0};
488 int err;
489
490 MLX5_SET(alloc_q_counter_in, in, opcode, MLX5_CMD_OP_ALLOC_Q_COUNTER);
491 err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
492 if (!err)
493 *counter_id = MLX5_GET(alloc_q_counter_out, out,
494 counter_set_id);
495 return err;
496}
497EXPORT_SYMBOL_GPL(mlx5_core_alloc_q_counter);
498
499int mlx5_core_dealloc_q_counter(struct mlx5_core_dev *dev, u16 counter_id)
500{
501 u32 in[MLX5_ST_SZ_DW(dealloc_q_counter_in)] = {0};
502 u32 out[MLX5_ST_SZ_DW(dealloc_q_counter_out)] = {0};
503
504 MLX5_SET(dealloc_q_counter_in, in, opcode,
505 MLX5_CMD_OP_DEALLOC_Q_COUNTER);
506 MLX5_SET(dealloc_q_counter_in, in, counter_set_id, counter_id);
507 return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
508}
509EXPORT_SYMBOL_GPL(mlx5_core_dealloc_q_counter);
510
511int mlx5_core_query_q_counter(struct mlx5_core_dev *dev, u16 counter_id,
512 int reset, void *out, int out_size)
513{
514 u32 in[MLX5_ST_SZ_DW(query_q_counter_in)] = {0};
515
516 MLX5_SET(query_q_counter_in, in, opcode, MLX5_CMD_OP_QUERY_Q_COUNTER);
517 MLX5_SET(query_q_counter_in, in, clear, reset);
518 MLX5_SET(query_q_counter_in, in, counter_set_id, counter_id);
519 return mlx5_cmd_exec(dev, in, sizeof(in), out, out_size);
520}
521EXPORT_SYMBOL_GPL(mlx5_core_query_q_counter);
522
523int mlx5_core_query_out_of_buffer(struct mlx5_core_dev *dev, u16 counter_id,
524 u32 *out_of_buffer)
525{
526 int outlen = MLX5_ST_SZ_BYTES(query_q_counter_out);
527 void *out;
528 int err;
529
530 out = mlx5_vzalloc(outlen);
531 if (!out)
532 return -ENOMEM;
533
534 err = mlx5_core_query_q_counter(dev, counter_id, 0, out, outlen);
535 if (!err)
536 *out_of_buffer = MLX5_GET(query_q_counter_out, out,
537 out_of_buffer);
538
539 kfree(out);
540 return err;
541}
542
