blob: 09652dc89115476c060626ec653fe227a933a144 [file] [log] [blame]
/*
* Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <linux/debugfs.h>
#include <linux/mlx5/qp.h>
#include <linux/mlx5/cq.h>
#include <linux/mlx5/driver.h>
#include "mlx5_core.h"
#include "lib/eq.h"
enum {
QP_PID,
QP_STATE,
QP_XPORT,
QP_MTU,
QP_N_RECV,
QP_RECV_SZ,
QP_N_SEND,
QP_LOG_PG_SZ,
QP_RQPN,
};
static char *qp_fields[] = {
[QP_PID] = "pid",
[QP_STATE] = "state",
[QP_XPORT] = "transport",
[QP_MTU] = "mtu",
[QP_N_RECV] = "num_recv",
[QP_RECV_SZ] = "rcv_wqe_sz",
[QP_N_SEND] = "num_send",
[QP_LOG_PG_SZ] = "log2_page_sz",
[QP_RQPN] = "remote_qpn",
};
enum {
EQ_NUM_EQES,
EQ_INTR,
EQ_LOG_PG_SZ,
};
static char *eq_fields[] = {
[EQ_NUM_EQES] = "num_eqes",
[EQ_INTR] = "intr",
[EQ_LOG_PG_SZ] = "log_page_size",
};
enum {
CQ_PID,
CQ_NUM_CQES,
CQ_LOG_PG_SZ,
};
static char *cq_fields[] = {
[CQ_PID] = "pid",
[CQ_NUM_CQES] = "num_cqes",
[CQ_LOG_PG_SZ] = "log_page_size",
};
struct dentry *mlx5_debugfs_root;
EXPORT_SYMBOL(mlx5_debugfs_root);
void mlx5_register_debugfs(void)
{
mlx5_debugfs_root = debugfs_create_dir("mlx5", NULL);
}
void mlx5_unregister_debugfs(void)
{
debugfs_remove(mlx5_debugfs_root);
}
struct dentry *mlx5_debugfs_get_dev_root(struct mlx5_core_dev *dev)
{
return dev->priv.dbg.dbg_root;
}
EXPORT_SYMBOL(mlx5_debugfs_get_dev_root);
void mlx5_qp_debugfs_init(struct mlx5_core_dev *dev)
{
dev->priv.dbg.qp_debugfs = debugfs_create_dir("QPs", dev->priv.dbg.dbg_root);
}
EXPORT_SYMBOL(mlx5_qp_debugfs_init);
void mlx5_qp_debugfs_cleanup(struct mlx5_core_dev *dev)
{
debugfs_remove_recursive(dev->priv.dbg.qp_debugfs);
}
EXPORT_SYMBOL(mlx5_qp_debugfs_cleanup);
void mlx5_eq_debugfs_init(struct mlx5_core_dev *dev)
{
dev->priv.dbg.eq_debugfs = debugfs_create_dir("EQs", dev->priv.dbg.dbg_root);
}
void mlx5_eq_debugfs_cleanup(struct mlx5_core_dev *dev)
{
debugfs_remove_recursive(dev->priv.dbg.eq_debugfs);
}
static ssize_t average_read(struct file *filp, char __user *buf, size_t count,
loff_t *pos)
{
struct mlx5_cmd_stats *stats;
u64 field = 0;
int ret;
char tbuf[22];
stats = filp->private_data;
spin_lock_irq(&stats->lock);
if (stats->n)
field = div64_u64(stats->sum, stats->n);
spin_unlock_irq(&stats->lock);
ret = snprintf(tbuf, sizeof(tbuf), "%llu\n", field);
return simple_read_from_buffer(buf, count, pos, tbuf, ret);
}
static ssize_t average_write(struct file *filp, const char __user *buf,
size_t count, loff_t *pos)
{
struct mlx5_cmd_stats *stats;
stats = filp->private_data;
spin_lock_irq(&stats->lock);
stats->sum = 0;
stats->n = 0;
spin_unlock_irq(&stats->lock);
*pos += count;
return count;
}
static const struct file_operations stats_fops = {
.owner = THIS_MODULE,
.open = simple_open,
.read = average_read,
.write = average_write,
};
static ssize_t slots_read(struct file *filp, char __user *buf, size_t count,
loff_t *pos)
{
struct mlx5_cmd *cmd;
char tbuf[6];
int weight;
int field;
int ret;
cmd = filp->private_data;
weight = bitmap_weight(&cmd->vars.bitmask, cmd->vars.max_reg_cmds);
field = cmd->vars.max_reg_cmds - weight;
ret = snprintf(tbuf, sizeof(tbuf), "%d\n", field);
return simple_read_from_buffer(buf, count, pos, tbuf, ret);
}
static const struct file_operations slots_fops = {
.owner = THIS_MODULE,
.open = simple_open,
.read = slots_read,
};
static struct mlx5_cmd_stats *
mlx5_cmdif_alloc_stats(struct xarray *stats_xa, int opcode)
{
struct mlx5_cmd_stats *stats = kzalloc(sizeof(*stats), GFP_KERNEL);
int err;
if (!stats)
return NULL;
err = xa_insert(stats_xa, opcode, stats, GFP_KERNEL);
if (err) {
kfree(stats);
return NULL;
}
spin_lock_init(&stats->lock);
return stats;
}
void mlx5_cmdif_debugfs_init(struct mlx5_core_dev *dev)
{
struct mlx5_cmd_stats *stats;
struct dentry **cmd;
const char *namep;
int i;
cmd = &dev->priv.dbg.cmdif_debugfs;
*cmd = debugfs_create_dir("commands", dev->priv.dbg.dbg_root);
debugfs_create_file("slots_inuse", 0400, *cmd, &dev->cmd, &slots_fops);
xa_init(&dev->cmd.stats);
for (i = 0; i < MLX5_CMD_OP_MAX; i++) {
namep = mlx5_command_str(i);
if (strcmp(namep, "unknown command opcode")) {
stats = mlx5_cmdif_alloc_stats(&dev->cmd.stats, i);
if (!stats)
continue;
stats->root = debugfs_create_dir(namep, *cmd);
debugfs_create_file("average", 0400, stats->root, stats,
&stats_fops);
debugfs_create_u64("n", 0400, stats->root, &stats->n);
debugfs_create_u64("failed", 0400, stats->root, &stats->failed);
debugfs_create_u64("failed_mbox_status", 0400, stats->root,
&stats->failed_mbox_status);
debugfs_create_u32("last_failed_errno", 0400, stats->root,
&stats->last_failed_errno);
debugfs_create_u8("last_failed_mbox_status", 0400, stats->root,
&stats->last_failed_mbox_status);
debugfs_create_x32("last_failed_syndrome", 0400, stats->root,
&stats->last_failed_syndrome);
}
}
}
void mlx5_cmdif_debugfs_cleanup(struct mlx5_core_dev *dev)
{
struct mlx5_cmd_stats *stats;
unsigned long i;
debugfs_remove_recursive(dev->priv.dbg.cmdif_debugfs);
xa_for_each(&dev->cmd.stats, i, stats)
kfree(stats);
xa_destroy(&dev->cmd.stats);
}
void mlx5_cq_debugfs_init(struct mlx5_core_dev *dev)
{
dev->priv.dbg.cq_debugfs = debugfs_create_dir("CQs", dev->priv.dbg.dbg_root);
}
void mlx5_cq_debugfs_cleanup(struct mlx5_core_dev *dev)
{
debugfs_remove_recursive(dev->priv.dbg.cq_debugfs);
}
void mlx5_pages_debugfs_init(struct mlx5_core_dev *dev)
{
struct dentry *pages;
dev->priv.dbg.pages_debugfs = debugfs_create_dir("pages", dev->priv.dbg.dbg_root);
pages = dev->priv.dbg.pages_debugfs;
debugfs_create_u32("fw_pages_total", 0400, pages, &dev->priv.fw_pages);
debugfs_create_u32("fw_pages_vfs", 0400, pages, &dev->priv.page_counters[MLX5_VF]);
debugfs_create_u32("fw_pages_ec_vfs", 0400, pages, &dev->priv.page_counters[MLX5_EC_VF]);
debugfs_create_u32("fw_pages_sfs", 0400, pages, &dev->priv.page_counters[MLX5_SF]);
debugfs_create_u32("fw_pages_host_pf", 0400, pages, &dev->priv.page_counters[MLX5_HOST_PF]);
debugfs_create_u32("fw_pages_alloc_failed", 0400, pages, &dev->priv.fw_pages_alloc_failed);
debugfs_create_u32("fw_pages_give_dropped", 0400, pages, &dev->priv.give_pages_dropped);
debugfs_create_u32("fw_pages_reclaim_discard", 0400, pages,
&dev->priv.reclaim_pages_discard);
}
void mlx5_pages_debugfs_cleanup(struct mlx5_core_dev *dev)
{
debugfs_remove_recursive(dev->priv.dbg.pages_debugfs);
}
static u64 qp_read_field(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp,
int index, int *is_str)
{
int outlen = MLX5_ST_SZ_BYTES(query_qp_out);
u32 in[MLX5_ST_SZ_DW(query_qp_in)] = {};
u64 param = 0;
u32 *out;
int state;
u32 *qpc;
int err;
out = kzalloc(outlen, GFP_KERNEL);
if (!out)
return 0;
MLX5_SET(query_qp_in, in, opcode, MLX5_CMD_OP_QUERY_QP);
MLX5_SET(query_qp_in, in, qpn, qp->qpn);
err = mlx5_cmd_exec_inout(dev, query_qp, in, out);
if (err)
goto out;
*is_str = 0;
qpc = MLX5_ADDR_OF(query_qp_out, out, qpc);
switch (index) {
case QP_PID:
param = qp->pid;
break;
case QP_STATE:
state = MLX5_GET(qpc, qpc, state);
param = (unsigned long)mlx5_qp_state_str(state);
*is_str = 1;
break;
case QP_XPORT:
param = (unsigned long)mlx5_qp_type_str(MLX5_GET(qpc, qpc, st));
*is_str = 1;
break;
case QP_MTU:
switch (MLX5_GET(qpc, qpc, mtu)) {
case IB_MTU_256:
param = 256;
break;
case IB_MTU_512:
param = 512;
break;
case IB_MTU_1024:
param = 1024;
break;
case IB_MTU_2048:
param = 2048;
break;
case IB_MTU_4096:
param = 4096;
break;
default:
param = 0;
}
break;
case QP_N_RECV:
param = 1 << MLX5_GET(qpc, qpc, log_rq_size);
break;
case QP_RECV_SZ:
param = 1 << (MLX5_GET(qpc, qpc, log_rq_stride) + 4);
break;
case QP_N_SEND:
if (!MLX5_GET(qpc, qpc, no_sq))
param = 1 << MLX5_GET(qpc, qpc, log_sq_size);
break;
case QP_LOG_PG_SZ:
param = MLX5_GET(qpc, qpc, log_page_size) + 12;
break;
case QP_RQPN:
param = MLX5_GET(qpc, qpc, remote_qpn);
break;
}
out:
kfree(out);
return param;
}
static u64 eq_read_field(struct mlx5_core_dev *dev, struct mlx5_eq *eq,
int index)
{
int outlen = MLX5_ST_SZ_BYTES(query_eq_out);
u32 in[MLX5_ST_SZ_DW(query_eq_in)] = {};
u64 param = 0;
void *ctx;
u32 *out;
int err;
out = kzalloc(outlen, GFP_KERNEL);
if (!out)
return param;
MLX5_SET(query_eq_in, in, opcode, MLX5_CMD_OP_QUERY_EQ);
MLX5_SET(query_eq_in, in, eq_number, eq->eqn);
err = mlx5_cmd_exec_inout(dev, query_eq, in, out);
if (err) {
mlx5_core_warn(dev, "failed to query eq\n");
goto out;
}
ctx = MLX5_ADDR_OF(query_eq_out, out, eq_context_entry);
switch (index) {
case EQ_NUM_EQES:
param = 1 << MLX5_GET(eqc, ctx, log_eq_size);
break;
case EQ_INTR:
param = MLX5_GET(eqc, ctx, intr);
break;
case EQ_LOG_PG_SZ:
param = MLX5_GET(eqc, ctx, log_page_size) + 12;
break;
}
out:
kfree(out);
return param;
}
static u64 cq_read_field(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq,
int index)
{
int outlen = MLX5_ST_SZ_BYTES(query_cq_out);
u64 param = 0;
void *ctx;
u32 *out;
int err;
out = kvzalloc(outlen, GFP_KERNEL);
if (!out)
return param;
err = mlx5_core_query_cq(dev, cq, out);
if (err) {
mlx5_core_warn(dev, "failed to query cq\n");
goto out;
}
ctx = MLX5_ADDR_OF(query_cq_out, out, cq_context);
switch (index) {
case CQ_PID:
param = cq->pid;
break;
case CQ_NUM_CQES:
param = 1 << MLX5_GET(cqc, ctx, log_cq_size);
break;
case CQ_LOG_PG_SZ:
param = MLX5_GET(cqc, ctx, log_page_size);
break;
}
out:
kvfree(out);
return param;
}
static ssize_t dbg_read(struct file *filp, char __user *buf, size_t count,
loff_t *pos)
{
struct mlx5_field_desc *desc;
struct mlx5_rsc_debug *d;
char tbuf[18];
int is_str = 0;
u64 field;
int ret;
desc = filp->private_data;
d = (void *)(desc - desc->i) - sizeof(*d);
switch (d->type) {
case MLX5_DBG_RSC_QP:
field = qp_read_field(d->dev, d->object, desc->i, &is_str);
break;
case MLX5_DBG_RSC_EQ:
field = eq_read_field(d->dev, d->object, desc->i);
break;
case MLX5_DBG_RSC_CQ:
field = cq_read_field(d->dev, d->object, desc->i);
break;
default:
mlx5_core_warn(d->dev, "invalid resource type %d\n", d->type);
return -EINVAL;
}
if (is_str)
ret = snprintf(tbuf, sizeof(tbuf), "%s\n", (const char *)(unsigned long)field);
else
ret = snprintf(tbuf, sizeof(tbuf), "0x%llx\n", field);
return simple_read_from_buffer(buf, count, pos, tbuf, ret);
}
static const struct file_operations fops = {
.owner = THIS_MODULE,
.open = simple_open,
.read = dbg_read,
};
static int add_res_tree(struct mlx5_core_dev *dev, enum dbg_rsc_type type,
struct dentry *root, struct mlx5_rsc_debug **dbg,
int rsn, char **field, int nfile, void *data)
{
struct mlx5_rsc_debug *d;
char resn[32];
int i;
d = kzalloc(struct_size(d, fields, nfile), GFP_KERNEL);
if (!d)
return -ENOMEM;
d->dev = dev;
d->object = data;
d->type = type;
sprintf(resn, "0x%x", rsn);
d->root = debugfs_create_dir(resn, root);
for (i = 0; i < nfile; i++) {
d->fields[i].i = i;
debugfs_create_file(field[i], 0400, d->root, &d->fields[i],
&fops);
}
*dbg = d;
return 0;
}
static void rem_res_tree(struct mlx5_rsc_debug *d)
{
debugfs_remove_recursive(d->root);
kfree(d);
}
int mlx5_debug_qp_add(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp)
{
int err;
if (!mlx5_debugfs_root)
return 0;
err = add_res_tree(dev, MLX5_DBG_RSC_QP, dev->priv.dbg.qp_debugfs,
&qp->dbg, qp->qpn, qp_fields,
ARRAY_SIZE(qp_fields), qp);
if (err)
qp->dbg = NULL;
return err;
}
EXPORT_SYMBOL(mlx5_debug_qp_add);
void mlx5_debug_qp_remove(struct mlx5_core_dev *dev, struct mlx5_core_qp *qp)
{
if (!mlx5_debugfs_root || !qp->dbg)
return;
rem_res_tree(qp->dbg);
qp->dbg = NULL;
}
EXPORT_SYMBOL(mlx5_debug_qp_remove);
int mlx5_debug_eq_add(struct mlx5_core_dev *dev, struct mlx5_eq *eq)
{
int err;
if (!mlx5_debugfs_root)
return 0;
err = add_res_tree(dev, MLX5_DBG_RSC_EQ, dev->priv.dbg.eq_debugfs,
&eq->dbg, eq->eqn, eq_fields,
ARRAY_SIZE(eq_fields), eq);
if (err)
eq->dbg = NULL;
return err;
}
void mlx5_debug_eq_remove(struct mlx5_core_dev *dev, struct mlx5_eq *eq)
{
if (!mlx5_debugfs_root)
return;
if (eq->dbg)
rem_res_tree(eq->dbg);
}
int mlx5_debug_cq_add(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq)
{
int err;
if (!mlx5_debugfs_root)
return 0;
err = add_res_tree(dev, MLX5_DBG_RSC_CQ, dev->priv.dbg.cq_debugfs,
&cq->dbg, cq->cqn, cq_fields,
ARRAY_SIZE(cq_fields), cq);
if (err)
cq->dbg = NULL;
return err;
}
void mlx5_debug_cq_remove(struct mlx5_core_dev *dev, struct mlx5_core_cq *cq)
{
if (!mlx5_debugfs_root)
return;
if (cq->dbg) {
rem_res_tree(cq->dbg);
cq->dbg = NULL;
}
}