2 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
4 * This software is available to you under a choice of one of two
5 * licenses. You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
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11 * without modification, are permitted provided that the following
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15 * copyright notice, this list of conditions and the following
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19 * copyright notice, this list of conditions and the following
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21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 #include <linux/gfp.h>
34 #include <linux/export.h>
35 #include <linux/mlx5/cmd.h>
36 #include <linux/mlx5/qp.h>
37 #include <linux/mlx5/driver.h>
38 #include <linux/mlx5/transobj.h>
40 #include "mlx5_core.h"
42 static struct mlx5_core_rsc_common *mlx5_get_rsc(struct mlx5_core_dev *dev,
45 struct mlx5_qp_table *table = &dev->priv.qp_table;
46 struct mlx5_core_rsc_common *common;
49 spin_lock_irqsave(&table->lock, flags);
51 common = radix_tree_lookup(&table->tree, rsn);
53 atomic_inc(&common->refcount);
55 spin_unlock_irqrestore(&table->lock, flags);
58 mlx5_core_warn(dev, "Async event for bogus resource 0x%x\n",
65 void mlx5_core_put_rsc(struct mlx5_core_rsc_common *common)
67 if (atomic_dec_and_test(&common->refcount))
68 complete(&common->free);
71 static u64 qp_allowed_event_types(void)
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);
87 static u64 rq_allowed_event_types(void)
91 mask = BIT(MLX5_EVENT_TYPE_SRQ_LAST_WQE) |
92 BIT(MLX5_EVENT_TYPE_WQ_CATAS_ERROR);
97 static u64 sq_allowed_event_types(void)
99 return BIT(MLX5_EVENT_TYPE_WQ_CATAS_ERROR);
102 static bool is_event_type_allowed(int rsc_type, int event_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();
112 WARN(1, "Event arrived for unknown resource type");
117 void mlx5_rsc_event(struct mlx5_core_dev *dev, u32 rsn, int event_type)
119 struct mlx5_core_rsc_common *common = mlx5_get_rsc(dev, rsn);
120 struct mlx5_core_qp *qp;
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",
131 switch (common->res) {
135 qp = (struct mlx5_core_qp *)common;
136 qp->event(qp, event_type);
140 mlx5_core_warn(dev, "invalid resource type for 0x%x\n", rsn);
143 mlx5_core_put_rsc(common);
146 static int create_qprqsq_common(struct mlx5_core_dev *dev,
147 struct mlx5_core_qp *qp,
150 struct mlx5_qp_table *table = &dev->priv.qp_table;
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),
158 spin_unlock_irq(&table->lock);
162 atomic_set(&qp->common.refcount, 1);
163 init_completion(&qp->common.free);
164 qp->pid = current->pid;
169 static void destroy_qprqsq_common(struct mlx5_core_dev *dev,
170 struct mlx5_core_qp *qp)
172 struct mlx5_qp_table *table = &dev->priv.qp_table;
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);
183 int mlx5_core_create_qp(struct mlx5_core_dev *dev,
184 struct mlx5_core_qp *qp,
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)];
192 MLX5_SET(create_qp_in, in, opcode, MLX5_CMD_OP_CREATE_QP);
194 err = mlx5_cmd_exec(dev, in, inlen, out, sizeof(out));
198 qp->qpn = MLX5_GET(create_qp_out, out, qpn);
199 mlx5_core_dbg(dev, "qpn = 0x%x\n", qp->qpn);
201 err = create_qprqsq_common(dev, qp, MLX5_RES_QP);
205 err = mlx5_debug_qp_add(dev, qp);
207 mlx5_core_dbg(dev, "failed adding QP 0x%x to debug file system\n",
210 atomic_inc(&dev->num_qps);
215 memset(din, 0, sizeof(din));
216 memset(dout, 0, sizeof(dout));
217 MLX5_SET(destroy_qp_in, din, opcode, MLX5_CMD_OP_DESTROY_QP);
218 MLX5_SET(destroy_qp_in, din, qpn, qp->qpn);
219 mlx5_cmd_exec(dev, din, sizeof(din), dout, sizeof(dout));
222 EXPORT_SYMBOL_GPL(mlx5_core_create_qp);
224 int mlx5_core_destroy_qp(struct mlx5_core_dev *dev,
225 struct mlx5_core_qp *qp)
227 u32 out[MLX5_ST_SZ_DW(destroy_qp_out)] = {0};
228 u32 in[MLX5_ST_SZ_DW(destroy_qp_in)] = {0};
231 mlx5_debug_qp_remove(dev, qp);
233 destroy_qprqsq_common(dev, qp);
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));
241 atomic_dec(&dev->num_qps);
244 EXPORT_SYMBOL_GPL(mlx5_core_destroy_qp);
246 int mlx5_core_set_delay_drop(struct mlx5_core_dev *dev,
249 u32 out[MLX5_ST_SZ_DW(set_delay_drop_params_out)] = {0};
250 u32 in[MLX5_ST_SZ_DW(set_delay_drop_params_in)] = {0};
252 MLX5_SET(set_delay_drop_params_in, in, opcode,
253 MLX5_CMD_OP_SET_DELAY_DROP_PARAMS);
254 MLX5_SET(set_delay_drop_params_in, in, delay_drop_timeout,
256 return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
258 EXPORT_SYMBOL_GPL(mlx5_core_set_delay_drop);
267 static int mbox_alloc(struct mbox_info *mbox, int inlen, int outlen)
270 mbox->outlen = outlen;
271 mbox->in = kzalloc(mbox->inlen, GFP_KERNEL);
272 mbox->out = kzalloc(mbox->outlen, GFP_KERNEL);
273 if (!mbox->in || !mbox->out) {
282 static void mbox_free(struct mbox_info *mbox)
288 static int modify_qp_mbox_alloc(struct mlx5_core_dev *dev, u16 opcode, int qpn,
289 u32 opt_param_mask, void *qpc,
290 struct mbox_info *mbox)
295 #define MBOX_ALLOC(mbox, typ) \
296 mbox_alloc(mbox, MLX5_ST_SZ_BYTES(typ##_in), MLX5_ST_SZ_BYTES(typ##_out))
298 #define MOD_QP_IN_SET(typ, in, _opcode, _qpn) \
299 MLX5_SET(typ##_in, in, opcode, _opcode); \
300 MLX5_SET(typ##_in, in, qpn, _qpn)
302 #define MOD_QP_IN_SET_QPC(typ, in, _opcode, _qpn, _opt_p, _qpc) \
303 MOD_QP_IN_SET(typ, in, _opcode, _qpn); \
304 MLX5_SET(typ##_in, in, opt_param_mask, _opt_p); \
305 memcpy(MLX5_ADDR_OF(typ##_in, in, qpc), _qpc, MLX5_ST_SZ_BYTES(qpc))
309 case MLX5_CMD_OP_2RST_QP:
310 if (MBOX_ALLOC(mbox, qp_2rst))
312 MOD_QP_IN_SET(qp_2rst, mbox->in, opcode, qpn);
314 case MLX5_CMD_OP_2ERR_QP:
315 if (MBOX_ALLOC(mbox, qp_2err))
317 MOD_QP_IN_SET(qp_2err, mbox->in, opcode, qpn);
320 /* MODIFY with QPC */
321 case MLX5_CMD_OP_RST2INIT_QP:
322 if (MBOX_ALLOC(mbox, rst2init_qp))
324 MOD_QP_IN_SET_QPC(rst2init_qp, mbox->in, opcode, qpn,
325 opt_param_mask, qpc);
327 case MLX5_CMD_OP_INIT2RTR_QP:
328 if (MBOX_ALLOC(mbox, init2rtr_qp))
330 MOD_QP_IN_SET_QPC(init2rtr_qp, mbox->in, opcode, qpn,
331 opt_param_mask, qpc);
333 case MLX5_CMD_OP_RTR2RTS_QP:
334 if (MBOX_ALLOC(mbox, rtr2rts_qp))
336 MOD_QP_IN_SET_QPC(rtr2rts_qp, mbox->in, opcode, qpn,
337 opt_param_mask, qpc);
339 case MLX5_CMD_OP_RTS2RTS_QP:
340 if (MBOX_ALLOC(mbox, rts2rts_qp))
342 MOD_QP_IN_SET_QPC(rts2rts_qp, mbox->in, opcode, qpn,
343 opt_param_mask, qpc);
345 case MLX5_CMD_OP_SQERR2RTS_QP:
346 if (MBOX_ALLOC(mbox, sqerr2rts_qp))
348 MOD_QP_IN_SET_QPC(sqerr2rts_qp, mbox->in, opcode, qpn,
349 opt_param_mask, qpc);
351 case MLX5_CMD_OP_INIT2INIT_QP:
352 if (MBOX_ALLOC(mbox, init2init_qp))
354 MOD_QP_IN_SET_QPC(init2init_qp, mbox->in, opcode, qpn,
355 opt_param_mask, qpc);
358 mlx5_core_err(dev, "Unknown transition for modify QP: OP(0x%x) QPN(0x%x)\n",
365 int mlx5_core_qp_modify(struct mlx5_core_dev *dev, u16 opcode,
366 u32 opt_param_mask, void *qpc,
367 struct mlx5_core_qp *qp)
369 struct mbox_info mbox;
372 err = modify_qp_mbox_alloc(dev, opcode, qp->qpn,
373 opt_param_mask, qpc, &mbox);
377 err = mlx5_cmd_exec(dev, mbox.in, mbox.inlen, mbox.out, mbox.outlen);
381 EXPORT_SYMBOL_GPL(mlx5_core_qp_modify);
383 void mlx5_init_qp_table(struct mlx5_core_dev *dev)
385 struct mlx5_qp_table *table = &dev->priv.qp_table;
387 memset(table, 0, sizeof(*table));
388 spin_lock_init(&table->lock);
389 INIT_RADIX_TREE(&table->tree, GFP_ATOMIC);
390 mlx5_qp_debugfs_init(dev);
393 void mlx5_cleanup_qp_table(struct mlx5_core_dev *dev)
395 mlx5_qp_debugfs_cleanup(dev);
398 int mlx5_core_qp_query(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp,
399 u32 *out, int outlen)
401 u32 in[MLX5_ST_SZ_DW(query_qp_in)] = {0};
403 MLX5_SET(query_qp_in, in, opcode, MLX5_CMD_OP_QUERY_QP);
404 MLX5_SET(query_qp_in, in, qpn, qp->qpn);
405 return mlx5_cmd_exec(dev, in, sizeof(in), out, outlen);
407 EXPORT_SYMBOL_GPL(mlx5_core_qp_query);
409 int mlx5_core_xrcd_alloc(struct mlx5_core_dev *dev, u32 *xrcdn)
411 u32 out[MLX5_ST_SZ_DW(alloc_xrcd_out)] = {0};
412 u32 in[MLX5_ST_SZ_DW(alloc_xrcd_in)] = {0};
415 MLX5_SET(alloc_xrcd_in, in, opcode, MLX5_CMD_OP_ALLOC_XRCD);
416 err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
418 *xrcdn = MLX5_GET(alloc_xrcd_out, out, xrcd);
421 EXPORT_SYMBOL_GPL(mlx5_core_xrcd_alloc);
423 int mlx5_core_xrcd_dealloc(struct mlx5_core_dev *dev, u32 xrcdn)
425 u32 out[MLX5_ST_SZ_DW(dealloc_xrcd_out)] = {0};
426 u32 in[MLX5_ST_SZ_DW(dealloc_xrcd_in)] = {0};
428 MLX5_SET(dealloc_xrcd_in, in, opcode, MLX5_CMD_OP_DEALLOC_XRCD);
429 MLX5_SET(dealloc_xrcd_in, in, xrcd, xrcdn);
430 return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
432 EXPORT_SYMBOL_GPL(mlx5_core_xrcd_dealloc);
434 int mlx5_core_create_rq_tracked(struct mlx5_core_dev *dev, u32 *in, int inlen,
435 struct mlx5_core_qp *rq)
440 err = mlx5_core_create_rq(dev, in, inlen, &rqn);
445 err = create_qprqsq_common(dev, rq, MLX5_RES_RQ);
452 mlx5_core_destroy_rq(dev, rq->qpn);
456 EXPORT_SYMBOL(mlx5_core_create_rq_tracked);
458 void mlx5_core_destroy_rq_tracked(struct mlx5_core_dev *dev,
459 struct mlx5_core_qp *rq)
461 destroy_qprqsq_common(dev, rq);
462 mlx5_core_destroy_rq(dev, rq->qpn);
464 EXPORT_SYMBOL(mlx5_core_destroy_rq_tracked);
466 int mlx5_core_create_sq_tracked(struct mlx5_core_dev *dev, u32 *in, int inlen,
467 struct mlx5_core_qp *sq)
472 err = mlx5_core_create_sq(dev, in, inlen, &sqn);
477 err = create_qprqsq_common(dev, sq, MLX5_RES_SQ);
484 mlx5_core_destroy_sq(dev, sq->qpn);
488 EXPORT_SYMBOL(mlx5_core_create_sq_tracked);
490 void mlx5_core_destroy_sq_tracked(struct mlx5_core_dev *dev,
491 struct mlx5_core_qp *sq)
493 destroy_qprqsq_common(dev, sq);
494 mlx5_core_destroy_sq(dev, sq->qpn);
496 EXPORT_SYMBOL(mlx5_core_destroy_sq_tracked);
498 int mlx5_core_alloc_q_counter(struct mlx5_core_dev *dev, u16 *counter_id)
500 u32 in[MLX5_ST_SZ_DW(alloc_q_counter_in)] = {0};
501 u32 out[MLX5_ST_SZ_DW(alloc_q_counter_out)] = {0};
504 MLX5_SET(alloc_q_counter_in, in, opcode, MLX5_CMD_OP_ALLOC_Q_COUNTER);
505 err = mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
507 *counter_id = MLX5_GET(alloc_q_counter_out, out,
511 EXPORT_SYMBOL_GPL(mlx5_core_alloc_q_counter);
513 int mlx5_core_dealloc_q_counter(struct mlx5_core_dev *dev, u16 counter_id)
515 u32 in[MLX5_ST_SZ_DW(dealloc_q_counter_in)] = {0};
516 u32 out[MLX5_ST_SZ_DW(dealloc_q_counter_out)] = {0};
518 MLX5_SET(dealloc_q_counter_in, in, opcode,
519 MLX5_CMD_OP_DEALLOC_Q_COUNTER);
520 MLX5_SET(dealloc_q_counter_in, in, counter_set_id, counter_id);
521 return mlx5_cmd_exec(dev, in, sizeof(in), out, sizeof(out));
523 EXPORT_SYMBOL_GPL(mlx5_core_dealloc_q_counter);
525 int mlx5_core_query_q_counter(struct mlx5_core_dev *dev, u16 counter_id,
526 int reset, void *out, int out_size)
528 u32 in[MLX5_ST_SZ_DW(query_q_counter_in)] = {0};
530 MLX5_SET(query_q_counter_in, in, opcode, MLX5_CMD_OP_QUERY_Q_COUNTER);
531 MLX5_SET(query_q_counter_in, in, clear, reset);
532 MLX5_SET(query_q_counter_in, in, counter_set_id, counter_id);
533 return mlx5_cmd_exec(dev, in, sizeof(in), out, out_size);
535 EXPORT_SYMBOL_GPL(mlx5_core_query_q_counter);