2 * Copyright (c) 2013, Mellanox Technologies inc. 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
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
14 * - Redistributions of source code must retain the above
15 * copyright notice, this list of conditions and the following
18 * - Redistributions in binary form must reproduce the above
19 * copyright notice, this list of conditions and the following
20 * disclaimer in the documentation and/or other materials
21 * provided with the distribution.
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
33 #include <linux/module.h>
34 #include <linux/debugfs.h>
35 #include <linux/mlx5/qp.h>
36 #include <linux/mlx5/cq.h>
37 #include <linux/mlx5/driver.h>
38 #include "mlx5_core.h"
52 static char *qp_fields[] = {
55 [QP_XPORT] = "transport",
57 [QP_N_RECV] = "num_recv",
58 [QP_RECV_SZ] = "rcv_wqe_sz",
59 [QP_N_SEND] = "num_send",
60 [QP_LOG_PG_SZ] = "log2_page_sz",
61 [QP_RQPN] = "remote_qpn",
70 static char *eq_fields[] = {
71 [EQ_NUM_EQES] = "num_eqes",
73 [EQ_LOG_PG_SZ] = "log_page_size",
82 static char *cq_fields[] = {
84 [CQ_NUM_CQES] = "num_cqes",
85 [CQ_LOG_PG_SZ] = "log_page_size",
88 struct dentry *mlx5_debugfs_root;
89 EXPORT_SYMBOL(mlx5_debugfs_root);
91 void mlx5_register_debugfs(void)
93 mlx5_debugfs_root = debugfs_create_dir("mlx5", NULL);
94 if (IS_ERR_OR_NULL(mlx5_debugfs_root))
95 mlx5_debugfs_root = NULL;
98 void mlx5_unregister_debugfs(void)
100 debugfs_remove(mlx5_debugfs_root);
103 int mlx5_qp_debugfs_init(struct mlx5_core_dev *dev)
105 if (!mlx5_debugfs_root)
108 atomic_set(&dev->num_qps, 0);
110 dev->priv.qp_debugfs = debugfs_create_dir("QPs", dev->priv.dbg_root);
111 if (!dev->priv.qp_debugfs)
117 void mlx5_qp_debugfs_cleanup(struct mlx5_core_dev *dev)
119 if (!mlx5_debugfs_root)
122 debugfs_remove_recursive(dev->priv.qp_debugfs);
125 int mlx5_eq_debugfs_init(struct mlx5_core_dev *dev)
127 if (!mlx5_debugfs_root)
130 dev->priv.eq_debugfs = debugfs_create_dir("EQs", dev->priv.dbg_root);
131 if (!dev->priv.eq_debugfs)
137 void mlx5_eq_debugfs_cleanup(struct mlx5_core_dev *dev)
139 if (!mlx5_debugfs_root)
142 debugfs_remove_recursive(dev->priv.eq_debugfs);
145 static ssize_t average_read(struct file *filp, char __user *buf, size_t count,
148 struct mlx5_cmd_stats *stats;
157 stats = filp->private_data;
158 spin_lock(&stats->lock);
160 field = stats->sum / stats->n;
161 spin_unlock(&stats->lock);
162 ret = snprintf(tbuf, sizeof(tbuf), "%llu\n", field);
164 err = copy_to_user(buf, tbuf, ret);
174 static ssize_t average_write(struct file *filp, const char __user *buf,
175 size_t count, loff_t *pos)
177 struct mlx5_cmd_stats *stats;
179 stats = filp->private_data;
180 spin_lock(&stats->lock);
183 spin_unlock(&stats->lock);
190 static const struct file_operations stats_fops = {
191 .owner = THIS_MODULE,
193 .read = average_read,
194 .write = average_write,
197 int mlx5_cmdif_debugfs_init(struct mlx5_core_dev *dev)
199 struct mlx5_cmd_stats *stats;
205 if (!mlx5_debugfs_root)
208 cmd = &dev->priv.cmdif_debugfs;
209 *cmd = debugfs_create_dir("commands", dev->priv.dbg_root);
213 for (i = 0; i < ARRAY_SIZE(dev->cmd.stats); i++) {
214 stats = &dev->cmd.stats[i];
215 namep = mlx5_command_str(i);
216 if (strcmp(namep, "unknown command opcode")) {
217 stats->root = debugfs_create_dir(namep, *cmd);
219 mlx5_core_warn(dev, "failed adding command %d\n",
225 stats->avg = debugfs_create_file("average", 0400,
229 mlx5_core_warn(dev, "failed creating debugfs file\n");
234 stats->count = debugfs_create_u64("n", 0400,
238 mlx5_core_warn(dev, "failed creating debugfs file\n");
247 debugfs_remove_recursive(dev->priv.cmdif_debugfs);
251 void mlx5_cmdif_debugfs_cleanup(struct mlx5_core_dev *dev)
253 if (!mlx5_debugfs_root)
256 debugfs_remove_recursive(dev->priv.cmdif_debugfs);
259 int mlx5_cq_debugfs_init(struct mlx5_core_dev *dev)
261 if (!mlx5_debugfs_root)
264 dev->priv.cq_debugfs = debugfs_create_dir("CQs", dev->priv.dbg_root);
265 if (!dev->priv.cq_debugfs)
271 void mlx5_cq_debugfs_cleanup(struct mlx5_core_dev *dev)
273 if (!mlx5_debugfs_root)
276 debugfs_remove_recursive(dev->priv.cq_debugfs);
279 static u64 qp_read_field(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp,
282 struct mlx5_query_qp_mbox_out *out;
283 struct mlx5_qp_context *ctx;
288 out = kzalloc(sizeof(*out), GFP_KERNEL);
292 err = mlx5_core_qp_query(dev, qp, out, sizeof(*out));
294 mlx5_core_warn(dev, "failed to query qp\n");
304 param = be32_to_cpu(ctx->flags) >> 28;
307 param = (be32_to_cpu(ctx->flags) >> 16) & 0xff;
310 param = ctx->mtu_msgmax >> 5;
313 param = 1 << ((ctx->rq_size_stride >> 3) & 0xf);
316 param = 1 << ((ctx->rq_size_stride & 7) + 4);
319 no_sq = be16_to_cpu(ctx->sq_crq_size) >> 15;
321 param = 1 << (be16_to_cpu(ctx->sq_crq_size) >> 11);
326 param = ((cpu_to_be32(ctx->log_pg_sz_remote_qpn) >> 24) & 0x1f);
330 param = cpu_to_be32(ctx->log_pg_sz_remote_qpn) & 0xffffff;
339 static u64 eq_read_field(struct mlx5_core_dev *dev, struct mlx5_eq *eq,
342 struct mlx5_query_eq_mbox_out *out;
343 struct mlx5_eq_context *ctx;
347 out = kzalloc(sizeof(*out), GFP_KERNEL);
353 err = mlx5_core_eq_query(dev, eq, out, sizeof(*out));
355 mlx5_core_warn(dev, "failed to query eq\n");
361 param = 1 << ((be32_to_cpu(ctx->log_sz_usr_page) >> 24) & 0x1f);
367 param = (ctx->log_page_size & 0x1f) + 12;
376 static u64 cq_read_field(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
379 struct mlx5_query_cq_mbox_out *out;
380 struct mlx5_cq_context *ctx;
384 out = kzalloc(sizeof(*out), GFP_KERNEL);
390 err = mlx5_core_query_cq(dev, cq, out);
392 mlx5_core_warn(dev, "failed to query cq\n");
401 param = 1 << ((be32_to_cpu(ctx->log_sz_usr_page) >> 24) & 0x1f);
404 param = (ctx->log_pg_sz & 0x1f) + 12;
413 static ssize_t dbg_read(struct file *filp, char __user *buf, size_t count,
416 struct mlx5_field_desc *desc;
417 struct mlx5_rsc_debug *d;
426 desc = filp->private_data;
427 d = (void *)(desc - desc->i) - sizeof(*d);
429 case MLX5_DBG_RSC_QP:
430 field = qp_read_field(d->dev, d->object, desc->i);
433 case MLX5_DBG_RSC_EQ:
434 field = eq_read_field(d->dev, d->object, desc->i);
437 case MLX5_DBG_RSC_CQ:
438 field = cq_read_field(d->dev, d->object, desc->i);
442 mlx5_core_warn(d->dev, "invalid resource type %d\n", d->type);
446 ret = snprintf(tbuf, sizeof(tbuf), "0x%llx\n", field);
448 err = copy_to_user(buf, tbuf, ret);
457 static const struct file_operations fops = {
458 .owner = THIS_MODULE,
463 static int add_res_tree(struct mlx5_core_dev *dev, enum dbg_rsc_type type,
464 struct dentry *root, struct mlx5_rsc_debug **dbg,
465 int rsn, char **field, int nfile, void *data)
467 struct mlx5_rsc_debug *d;
472 d = kzalloc(sizeof(*d) + nfile * sizeof(d->fields[0]), GFP_KERNEL);
479 sprintf(resn, "0x%x", rsn);
480 d->root = debugfs_create_dir(resn, root);
486 for (i = 0; i < nfile; i++) {
488 d->fields[i].dent = debugfs_create_file(field[i], 0400,
489 d->root, &d->fields[i],
491 if (!d->fields[i].dent) {
500 debugfs_remove_recursive(d->root);
507 static void rem_res_tree(struct mlx5_rsc_debug *d)
509 debugfs_remove_recursive(d->root);
513 int mlx5_debug_qp_add(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp)
517 if (!mlx5_debugfs_root)
520 err = add_res_tree(dev, MLX5_DBG_RSC_QP, dev->priv.qp_debugfs,
521 &qp->dbg, qp->qpn, qp_fields,
522 ARRAY_SIZE(qp_fields), qp);
529 void mlx5_debug_qp_remove(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp)
531 if (!mlx5_debugfs_root)
535 rem_res_tree(qp->dbg);
539 int mlx5_debug_eq_add(struct mlx5_core_dev *dev, struct mlx5_eq *eq)
543 if (!mlx5_debugfs_root)
546 err = add_res_tree(dev, MLX5_DBG_RSC_EQ, dev->priv.eq_debugfs,
547 &eq->dbg, eq->eqn, eq_fields,
548 ARRAY_SIZE(eq_fields), eq);
555 void mlx5_debug_eq_remove(struct mlx5_core_dev *dev, struct mlx5_eq *eq)
557 if (!mlx5_debugfs_root)
561 rem_res_tree(eq->dbg);
564 int mlx5_debug_cq_add(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq)
568 if (!mlx5_debugfs_root)
571 err = add_res_tree(dev, MLX5_DBG_RSC_CQ, dev->priv.cq_debugfs,
572 &cq->dbg, cq->cqn, cq_fields,
573 ARRAY_SIZE(cq_fields), cq);
580 void mlx5_debug_cq_remove(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq)
582 if (!mlx5_debugfs_root)
586 rem_res_tree(cq->dbg);