2 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
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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,
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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;
153 stats = filp->private_data;
154 spin_lock_irq(&stats->lock);
156 field = div64_u64(stats->sum, stats->n);
157 spin_unlock_irq(&stats->lock);
158 ret = snprintf(tbuf, sizeof(tbuf), "%llu\n", field);
159 return simple_read_from_buffer(buf, count, pos, tbuf, ret);
162 static ssize_t average_write(struct file *filp, const char __user *buf,
163 size_t count, loff_t *pos)
165 struct mlx5_cmd_stats *stats;
167 stats = filp->private_data;
168 spin_lock_irq(&stats->lock);
171 spin_unlock_irq(&stats->lock);
178 static const struct file_operations stats_fops = {
179 .owner = THIS_MODULE,
181 .read = average_read,
182 .write = average_write,
185 int mlx5_cmdif_debugfs_init(struct mlx5_core_dev *dev)
187 struct mlx5_cmd_stats *stats;
193 if (!mlx5_debugfs_root)
196 cmd = &dev->priv.cmdif_debugfs;
197 *cmd = debugfs_create_dir("commands", dev->priv.dbg_root);
201 for (i = 0; i < ARRAY_SIZE(dev->cmd.stats); i++) {
202 stats = &dev->cmd.stats[i];
203 namep = mlx5_command_str(i);
204 if (strcmp(namep, "unknown command opcode")) {
205 stats->root = debugfs_create_dir(namep, *cmd);
207 mlx5_core_warn(dev, "failed adding command %d\n",
213 stats->avg = debugfs_create_file("average", 0400,
217 mlx5_core_warn(dev, "failed creating debugfs file\n");
222 stats->count = debugfs_create_u64("n", 0400,
226 mlx5_core_warn(dev, "failed creating debugfs file\n");
235 debugfs_remove_recursive(dev->priv.cmdif_debugfs);
239 void mlx5_cmdif_debugfs_cleanup(struct mlx5_core_dev *dev)
241 if (!mlx5_debugfs_root)
244 debugfs_remove_recursive(dev->priv.cmdif_debugfs);
247 int mlx5_cq_debugfs_init(struct mlx5_core_dev *dev)
249 if (!mlx5_debugfs_root)
252 dev->priv.cq_debugfs = debugfs_create_dir("CQs", dev->priv.dbg_root);
253 if (!dev->priv.cq_debugfs)
259 void mlx5_cq_debugfs_cleanup(struct mlx5_core_dev *dev)
261 if (!mlx5_debugfs_root)
264 debugfs_remove_recursive(dev->priv.cq_debugfs);
267 static u64 qp_read_field(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp,
268 int index, int *is_str)
270 int outlen = MLX5_ST_SZ_BYTES(query_qp_out);
271 struct mlx5_qp_context *ctx;
277 out = kzalloc(outlen, GFP_KERNEL);
281 err = mlx5_core_qp_query(dev, qp, out, outlen);
283 mlx5_core_warn(dev, "failed to query qp err=%d\n", err);
289 /* FIXME: use MLX5_GET rather than mlx5_qp_context manual struct */
290 ctx = (struct mlx5_qp_context *)MLX5_ADDR_OF(query_qp_out, out, qpc);
297 param = (unsigned long)mlx5_qp_state_str(be32_to_cpu(ctx->flags) >> 28);
301 param = (unsigned long)mlx5_qp_type_str((be32_to_cpu(ctx->flags) >> 16) & 0xff);
305 switch (ctx->mtu_msgmax >> 5) {
326 param = 1 << ((ctx->rq_size_stride >> 3) & 0xf);
329 param = 1 << ((ctx->rq_size_stride & 7) + 4);
332 no_sq = be16_to_cpu(ctx->sq_crq_size) >> 15;
334 param = 1 << (be16_to_cpu(ctx->sq_crq_size) >> 11);
339 param = (be32_to_cpu(ctx->log_pg_sz_remote_qpn) >> 24) & 0x1f;
343 param = be32_to_cpu(ctx->log_pg_sz_remote_qpn) & 0xffffff;
352 static u64 eq_read_field(struct mlx5_core_dev *dev, struct mlx5_eq *eq,
355 int outlen = MLX5_ST_SZ_BYTES(query_eq_out);
361 out = kzalloc(outlen, GFP_KERNEL);
365 err = mlx5_core_eq_query(dev, eq, out, outlen);
367 mlx5_core_warn(dev, "failed to query eq\n");
370 ctx = MLX5_ADDR_OF(query_eq_out, out, eq_context_entry);
374 param = 1 << MLX5_GET(eqc, ctx, log_eq_size);
377 param = MLX5_GET(eqc, ctx, intr);
380 param = MLX5_GET(eqc, ctx, log_page_size) + 12;
389 static u64 cq_read_field(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
392 int outlen = MLX5_ST_SZ_BYTES(query_cq_out);
398 out = kvzalloc(outlen, GFP_KERNEL);
402 err = mlx5_core_query_cq(dev, cq, out, outlen);
404 mlx5_core_warn(dev, "failed to query cq\n");
407 ctx = MLX5_ADDR_OF(query_cq_out, out, cq_context);
414 param = 1 << MLX5_GET(cqc, ctx, log_cq_size);
417 param = MLX5_GET(cqc, ctx, log_page_size);
426 static ssize_t dbg_read(struct file *filp, char __user *buf, size_t count,
429 struct mlx5_field_desc *desc;
430 struct mlx5_rsc_debug *d;
436 desc = filp->private_data;
437 d = (void *)(desc - desc->i) - sizeof(*d);
439 case MLX5_DBG_RSC_QP:
440 field = qp_read_field(d->dev, d->object, desc->i, &is_str);
443 case MLX5_DBG_RSC_EQ:
444 field = eq_read_field(d->dev, d->object, desc->i);
447 case MLX5_DBG_RSC_CQ:
448 field = cq_read_field(d->dev, d->object, desc->i);
452 mlx5_core_warn(d->dev, "invalid resource type %d\n", d->type);
457 ret = snprintf(tbuf, sizeof(tbuf), "%s\n", (const char *)(unsigned long)field);
459 ret = snprintf(tbuf, sizeof(tbuf), "0x%llx\n", field);
461 return simple_read_from_buffer(buf, count, pos, tbuf, ret);
464 static const struct file_operations fops = {
465 .owner = THIS_MODULE,
470 static int add_res_tree(struct mlx5_core_dev *dev, enum dbg_rsc_type type,
471 struct dentry *root, struct mlx5_rsc_debug **dbg,
472 int rsn, char **field, int nfile, void *data)
474 struct mlx5_rsc_debug *d;
479 d = kzalloc(struct_size(d, fields, nfile), GFP_KERNEL);
486 sprintf(resn, "0x%x", rsn);
487 d->root = debugfs_create_dir(resn, root);
493 for (i = 0; i < nfile; i++) {
495 d->fields[i].dent = debugfs_create_file(field[i], 0400,
496 d->root, &d->fields[i],
498 if (!d->fields[i].dent) {
507 debugfs_remove_recursive(d->root);
514 static void rem_res_tree(struct mlx5_rsc_debug *d)
516 debugfs_remove_recursive(d->root);
520 int mlx5_debug_qp_add(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp)
524 if (!mlx5_debugfs_root)
527 err = add_res_tree(dev, MLX5_DBG_RSC_QP, dev->priv.qp_debugfs,
528 &qp->dbg, qp->qpn, qp_fields,
529 ARRAY_SIZE(qp_fields), qp);
536 void mlx5_debug_qp_remove(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp)
538 if (!mlx5_debugfs_root)
542 rem_res_tree(qp->dbg);
545 int mlx5_debug_eq_add(struct mlx5_core_dev *dev, struct mlx5_eq *eq)
549 if (!mlx5_debugfs_root)
552 err = add_res_tree(dev, MLX5_DBG_RSC_EQ, dev->priv.eq_debugfs,
553 &eq->dbg, eq->eqn, eq_fields,
554 ARRAY_SIZE(eq_fields), eq);
561 void mlx5_debug_eq_remove(struct mlx5_core_dev *dev, struct mlx5_eq *eq)
563 if (!mlx5_debugfs_root)
567 rem_res_tree(eq->dbg);
570 int mlx5_debug_cq_add(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq)
574 if (!mlx5_debugfs_root)
577 err = add_res_tree(dev, MLX5_DBG_RSC_CQ, dev->priv.cq_debugfs,
578 &cq->dbg, cq->cqn, cq_fields,
579 ARRAY_SIZE(cq_fields), cq);
586 void mlx5_debug_cq_remove(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq)
588 if (!mlx5_debugfs_root)
592 rem_res_tree(cq->dbg);