2 * Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
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23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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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 dev->priv.qp_debugfs = debugfs_create_dir("QPs", dev->priv.dbg_root);
106 EXPORT_SYMBOL(mlx5_qp_debugfs_init);
108 void mlx5_qp_debugfs_cleanup(struct mlx5_core_dev *dev)
110 debugfs_remove_recursive(dev->priv.qp_debugfs);
112 EXPORT_SYMBOL(mlx5_qp_debugfs_cleanup);
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 u32 out[MLX5_ST_SZ_BYTES(query_qp_out)] = {};
206 u32 in[MLX5_ST_SZ_DW(query_qp_in)] = {};
212 MLX5_SET(query_qp_in, in, opcode, MLX5_CMD_OP_QUERY_QP);
213 MLX5_SET(query_qp_in, in, qpn, qp->qpn);
214 err = mlx5_cmd_exec_inout(dev, query_qp, in, out);
220 qpc = MLX5_ADDR_OF(query_qp_out, out, qpc);
226 state = MLX5_GET(qpc, qpc, state);
227 param = (unsigned long)mlx5_qp_state_str(state);
231 param = (unsigned long)mlx5_qp_type_str(MLX5_GET(qpc, qpc, st));
235 switch (MLX5_GET(qpc, qpc, mtu)) {
256 param = 1 << MLX5_GET(qpc, qpc, log_rq_size);
259 param = 1 << (MLX5_GET(qpc, qpc, log_rq_stride) + 4);
262 if (!MLX5_GET(qpc, qpc, no_sq))
263 param = 1 << MLX5_GET(qpc, qpc, log_sq_size);
266 param = MLX5_GET(qpc, qpc, log_page_size) + 12;
269 param = MLX5_GET(qpc, qpc, remote_qpn);
276 static u64 eq_read_field(struct mlx5_core_dev *dev, struct mlx5_eq *eq,
279 int outlen = MLX5_ST_SZ_BYTES(query_eq_out);
280 u32 in[MLX5_ST_SZ_DW(query_eq_in)] = {};
286 out = kzalloc(outlen, GFP_KERNEL);
290 MLX5_SET(query_eq_in, in, opcode, MLX5_CMD_OP_QUERY_EQ);
291 MLX5_SET(query_eq_in, in, eq_number, eq->eqn);
292 err = mlx5_cmd_exec_inout(dev, query_eq, in, out);
294 mlx5_core_warn(dev, "failed to query eq\n");
297 ctx = MLX5_ADDR_OF(query_eq_out, out, eq_context_entry);
301 param = 1 << MLX5_GET(eqc, ctx, log_eq_size);
304 param = MLX5_GET(eqc, ctx, intr);
307 param = MLX5_GET(eqc, ctx, log_page_size) + 12;
316 static u64 cq_read_field(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
319 int outlen = MLX5_ST_SZ_BYTES(query_cq_out);
325 out = kvzalloc(outlen, GFP_KERNEL);
329 err = mlx5_core_query_cq(dev, cq, out);
331 mlx5_core_warn(dev, "failed to query cq\n");
334 ctx = MLX5_ADDR_OF(query_cq_out, out, cq_context);
341 param = 1 << MLX5_GET(cqc, ctx, log_cq_size);
344 param = MLX5_GET(cqc, ctx, log_page_size);
353 static ssize_t dbg_read(struct file *filp, char __user *buf, size_t count,
356 struct mlx5_field_desc *desc;
357 struct mlx5_rsc_debug *d;
363 desc = filp->private_data;
364 d = (void *)(desc - desc->i) - sizeof(*d);
366 case MLX5_DBG_RSC_QP:
367 field = qp_read_field(d->dev, d->object, desc->i, &is_str);
370 case MLX5_DBG_RSC_EQ:
371 field = eq_read_field(d->dev, d->object, desc->i);
374 case MLX5_DBG_RSC_CQ:
375 field = cq_read_field(d->dev, d->object, desc->i);
379 mlx5_core_warn(d->dev, "invalid resource type %d\n", d->type);
384 ret = snprintf(tbuf, sizeof(tbuf), "%s\n", (const char *)(unsigned long)field);
386 ret = snprintf(tbuf, sizeof(tbuf), "0x%llx\n", field);
388 return simple_read_from_buffer(buf, count, pos, tbuf, ret);
391 static const struct file_operations fops = {
392 .owner = THIS_MODULE,
397 static int add_res_tree(struct mlx5_core_dev *dev, enum dbg_rsc_type type,
398 struct dentry *root, struct mlx5_rsc_debug **dbg,
399 int rsn, char **field, int nfile, void *data)
401 struct mlx5_rsc_debug *d;
405 d = kzalloc(struct_size(d, fields, nfile), GFP_KERNEL);
412 sprintf(resn, "0x%x", rsn);
413 d->root = debugfs_create_dir(resn, root);
415 for (i = 0; i < nfile; i++) {
417 debugfs_create_file(field[i], 0400, d->root, &d->fields[i],
425 static void rem_res_tree(struct mlx5_rsc_debug *d)
427 debugfs_remove_recursive(d->root);
431 int mlx5_debug_qp_add(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp)
435 if (!mlx5_debugfs_root)
438 err = add_res_tree(dev, MLX5_DBG_RSC_QP, dev->priv.qp_debugfs,
439 &qp->dbg, qp->qpn, qp_fields,
440 ARRAY_SIZE(qp_fields), qp);
446 EXPORT_SYMBOL(mlx5_debug_qp_add);
448 void mlx5_debug_qp_remove(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp)
450 if (!mlx5_debugfs_root)
454 rem_res_tree(qp->dbg);
456 EXPORT_SYMBOL(mlx5_debug_qp_remove);
458 int mlx5_debug_eq_add(struct mlx5_core_dev *dev, struct mlx5_eq *eq)
462 if (!mlx5_debugfs_root)
465 err = add_res_tree(dev, MLX5_DBG_RSC_EQ, dev->priv.eq_debugfs,
466 &eq->dbg, eq->eqn, eq_fields,
467 ARRAY_SIZE(eq_fields), eq);
474 void mlx5_debug_eq_remove(struct mlx5_core_dev *dev, struct mlx5_eq *eq)
476 if (!mlx5_debugfs_root)
480 rem_res_tree(eq->dbg);
483 int mlx5_debug_cq_add(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq)
487 if (!mlx5_debugfs_root)
490 err = add_res_tree(dev, MLX5_DBG_RSC_CQ, dev->priv.cq_debugfs,
491 &cq->dbg, cq->cqn, cq_fields,
492 ARRAY_SIZE(cq_fields), cq);
499 void mlx5_debug_cq_remove(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq)
501 if (!mlx5_debugfs_root)
505 rem_res_tree(cq->dbg);