2 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
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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"
53 static char *qp_fields[] = {
56 [QP_XPORT] = "transport",
58 [QP_N_RECV] = "num_recv",
59 [QP_RECV_SZ] = "rcv_wqe_sz",
60 [QP_N_SEND] = "num_send",
61 [QP_LOG_PG_SZ] = "log2_page_sz",
62 [QP_RQPN] = "remote_qpn",
71 static char *eq_fields[] = {
72 [EQ_NUM_EQES] = "num_eqes",
74 [EQ_LOG_PG_SZ] = "log_page_size",
83 static char *cq_fields[] = {
85 [CQ_NUM_CQES] = "num_cqes",
86 [CQ_LOG_PG_SZ] = "log_page_size",
89 struct dentry *mlx5_debugfs_root;
90 EXPORT_SYMBOL(mlx5_debugfs_root);
92 void mlx5_register_debugfs(void)
94 mlx5_debugfs_root = debugfs_create_dir("mlx5", NULL);
97 void mlx5_unregister_debugfs(void)
99 debugfs_remove(mlx5_debugfs_root);
102 void mlx5_qp_debugfs_init(struct mlx5_core_dev *dev)
104 atomic_set(&dev->num_qps, 0);
106 dev->priv.qp_debugfs = debugfs_create_dir("QPs", dev->priv.dbg_root);
109 void mlx5_qp_debugfs_cleanup(struct mlx5_core_dev *dev)
111 debugfs_remove_recursive(dev->priv.qp_debugfs);
114 void mlx5_eq_debugfs_init(struct mlx5_core_dev *dev)
116 dev->priv.eq_debugfs = debugfs_create_dir("EQs", dev->priv.dbg_root);
119 void mlx5_eq_debugfs_cleanup(struct mlx5_core_dev *dev)
121 debugfs_remove_recursive(dev->priv.eq_debugfs);
124 static ssize_t average_read(struct file *filp, char __user *buf, size_t count,
127 struct mlx5_cmd_stats *stats;
132 stats = filp->private_data;
133 spin_lock_irq(&stats->lock);
135 field = div64_u64(stats->sum, stats->n);
136 spin_unlock_irq(&stats->lock);
137 ret = snprintf(tbuf, sizeof(tbuf), "%llu\n", field);
138 return simple_read_from_buffer(buf, count, pos, tbuf, ret);
141 static ssize_t average_write(struct file *filp, const char __user *buf,
142 size_t count, loff_t *pos)
144 struct mlx5_cmd_stats *stats;
146 stats = filp->private_data;
147 spin_lock_irq(&stats->lock);
150 spin_unlock_irq(&stats->lock);
157 static const struct file_operations stats_fops = {
158 .owner = THIS_MODULE,
160 .read = average_read,
161 .write = average_write,
164 void mlx5_cmdif_debugfs_init(struct mlx5_core_dev *dev)
166 struct mlx5_cmd_stats *stats;
171 cmd = &dev->priv.cmdif_debugfs;
172 *cmd = debugfs_create_dir("commands", dev->priv.dbg_root);
174 for (i = 0; i < ARRAY_SIZE(dev->cmd.stats); i++) {
175 stats = &dev->cmd.stats[i];
176 namep = mlx5_command_str(i);
177 if (strcmp(namep, "unknown command opcode")) {
178 stats->root = debugfs_create_dir(namep, *cmd);
180 debugfs_create_file("average", 0400, stats->root, stats,
182 debugfs_create_u64("n", 0400, stats->root, &stats->n);
187 void mlx5_cmdif_debugfs_cleanup(struct mlx5_core_dev *dev)
189 debugfs_remove_recursive(dev->priv.cmdif_debugfs);
192 void mlx5_cq_debugfs_init(struct mlx5_core_dev *dev)
194 dev->priv.cq_debugfs = debugfs_create_dir("CQs", dev->priv.dbg_root);
197 void mlx5_cq_debugfs_cleanup(struct mlx5_core_dev *dev)
199 debugfs_remove_recursive(dev->priv.cq_debugfs);
202 static u64 qp_read_field(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp,
203 int index, int *is_str)
205 int outlen = MLX5_ST_SZ_BYTES(query_qp_out);
206 struct mlx5_qp_context *ctx;
212 out = kzalloc(outlen, GFP_KERNEL);
216 err = mlx5_core_qp_query(dev, qp, out, outlen);
218 mlx5_core_warn(dev, "failed to query qp err=%d\n", err);
224 /* FIXME: use MLX5_GET rather than mlx5_qp_context manual struct */
225 ctx = (struct mlx5_qp_context *)MLX5_ADDR_OF(query_qp_out, out, qpc);
232 param = (unsigned long)mlx5_qp_state_str(be32_to_cpu(ctx->flags) >> 28);
236 param = (unsigned long)mlx5_qp_type_str((be32_to_cpu(ctx->flags) >> 16) & 0xff);
240 switch (ctx->mtu_msgmax >> 5) {
261 param = 1 << ((ctx->rq_size_stride >> 3) & 0xf);
264 param = 1 << ((ctx->rq_size_stride & 7) + 4);
267 no_sq = be16_to_cpu(ctx->sq_crq_size) >> 15;
269 param = 1 << (be16_to_cpu(ctx->sq_crq_size) >> 11);
274 param = (be32_to_cpu(ctx->log_pg_sz_remote_qpn) >> 24) & 0x1f;
278 param = be32_to_cpu(ctx->log_pg_sz_remote_qpn) & 0xffffff;
287 static int mlx5_core_eq_query(struct mlx5_core_dev *dev, struct mlx5_eq *eq,
288 u32 *out, int outlen)
290 u32 in[MLX5_ST_SZ_DW(query_eq_in)] = {};
292 MLX5_SET(query_eq_in, in, opcode, MLX5_CMD_OP_QUERY_EQ);
293 MLX5_SET(query_eq_in, in, eq_number, eq->eqn);
294 return mlx5_cmd_exec(dev, in, sizeof(in), out, outlen);
297 static u64 eq_read_field(struct mlx5_core_dev *dev, struct mlx5_eq *eq,
300 int outlen = MLX5_ST_SZ_BYTES(query_eq_out);
306 out = kzalloc(outlen, GFP_KERNEL);
310 err = mlx5_core_eq_query(dev, eq, out, outlen);
312 mlx5_core_warn(dev, "failed to query eq\n");
315 ctx = MLX5_ADDR_OF(query_eq_out, out, eq_context_entry);
319 param = 1 << MLX5_GET(eqc, ctx, log_eq_size);
322 param = MLX5_GET(eqc, ctx, intr);
325 param = MLX5_GET(eqc, ctx, log_page_size) + 12;
334 static u64 cq_read_field(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
337 int outlen = MLX5_ST_SZ_BYTES(query_cq_out);
343 out = kvzalloc(outlen, GFP_KERNEL);
347 err = mlx5_core_query_cq(dev, cq, out, outlen);
349 mlx5_core_warn(dev, "failed to query cq\n");
352 ctx = MLX5_ADDR_OF(query_cq_out, out, cq_context);
359 param = 1 << MLX5_GET(cqc, ctx, log_cq_size);
362 param = MLX5_GET(cqc, ctx, log_page_size);
371 static ssize_t dbg_read(struct file *filp, char __user *buf, size_t count,
374 struct mlx5_field_desc *desc;
375 struct mlx5_rsc_debug *d;
381 desc = filp->private_data;
382 d = (void *)(desc - desc->i) - sizeof(*d);
384 case MLX5_DBG_RSC_QP:
385 field = qp_read_field(d->dev, d->object, desc->i, &is_str);
388 case MLX5_DBG_RSC_EQ:
389 field = eq_read_field(d->dev, d->object, desc->i);
392 case MLX5_DBG_RSC_CQ:
393 field = cq_read_field(d->dev, d->object, desc->i);
397 mlx5_core_warn(d->dev, "invalid resource type %d\n", d->type);
402 ret = snprintf(tbuf, sizeof(tbuf), "%s\n", (const char *)(unsigned long)field);
404 ret = snprintf(tbuf, sizeof(tbuf), "0x%llx\n", field);
406 return simple_read_from_buffer(buf, count, pos, tbuf, ret);
409 static const struct file_operations fops = {
410 .owner = THIS_MODULE,
415 static int add_res_tree(struct mlx5_core_dev *dev, enum dbg_rsc_type type,
416 struct dentry *root, struct mlx5_rsc_debug **dbg,
417 int rsn, char **field, int nfile, void *data)
419 struct mlx5_rsc_debug *d;
423 d = kzalloc(struct_size(d, fields, nfile), GFP_KERNEL);
430 sprintf(resn, "0x%x", rsn);
431 d->root = debugfs_create_dir(resn, root);
433 for (i = 0; i < nfile; i++) {
435 debugfs_create_file(field[i], 0400, d->root, &d->fields[i],
443 static void rem_res_tree(struct mlx5_rsc_debug *d)
445 debugfs_remove_recursive(d->root);
449 int mlx5_debug_qp_add(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp)
453 if (!mlx5_debugfs_root)
456 err = add_res_tree(dev, MLX5_DBG_RSC_QP, dev->priv.qp_debugfs,
457 &qp->dbg, qp->qpn, qp_fields,
458 ARRAY_SIZE(qp_fields), qp);
465 void mlx5_debug_qp_remove(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp)
467 if (!mlx5_debugfs_root)
471 rem_res_tree(qp->dbg);
474 int mlx5_debug_eq_add(struct mlx5_core_dev *dev, struct mlx5_eq *eq)
478 if (!mlx5_debugfs_root)
481 err = add_res_tree(dev, MLX5_DBG_RSC_EQ, dev->priv.eq_debugfs,
482 &eq->dbg, eq->eqn, eq_fields,
483 ARRAY_SIZE(eq_fields), eq);
490 void mlx5_debug_eq_remove(struct mlx5_core_dev *dev, struct mlx5_eq *eq)
492 if (!mlx5_debugfs_root)
496 rem_res_tree(eq->dbg);
499 int mlx5_debug_cq_add(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq)
503 if (!mlx5_debugfs_root)
506 err = add_res_tree(dev, MLX5_DBG_RSC_CQ, dev->priv.cq_debugfs,
507 &cq->dbg, cq->cqn, cq_fields,
508 ARRAY_SIZE(cq_fields), cq);
515 void mlx5_debug_cq_remove(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq)
517 if (!mlx5_debugfs_root)
521 rem_res_tree(cq->dbg);