[linux-block.git] / drivers / net / ethernet / mellanox / mlx5 / core / debugfs.c

/*
 * 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->bitmask, cmd->max_reg_cmds);
	field = cmd->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,
};

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);

	for (i = 0; i < MLX5_CMD_OP_MAX; i++) {
		stats = &dev->cmd.stats[i];
		namep = mlx5_command_str(i);
		if (strcmp(namep, "unknown command opcode")) {
			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)
{
	debugfs_remove_recursive(dev->priv.dbg.cmdif_debugfs);
}

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;
	}
}
Commit	Line	Data
e126ba97	1	/*
302bdf68	2	* Copyright (c) 2013-2015, Mellanox Technologies. All rights reserved.
e126ba97 EC	3	*
	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:
	9	*
	10	* Redistribution and use in source and binary forms, with or
	11	* without modification, are permitted provided that the following
	12	* conditions are met:
	13	*
	14	* - Redistributions of source code must retain the above
	15	* copyright notice, this list of conditions and the following
	16	* disclaimer.
	17	*
	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.
	22	*
	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
	28	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	29	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	30	* SOFTWARE.
	31	*/
	32
e126ba97 EC	33	#include <linux/debugfs.h>
	34	#include <linux/mlx5/qp.h>
	35	#include <linux/mlx5/cq.h>
	36	#include <linux/mlx5/driver.h>
	37	#include "mlx5_core.h"
f2f3df55	38	#include "lib/eq.h"
e126ba97 EC	39
	40	enum {
	41	QP_PID,
	42	QP_STATE,
	43	QP_XPORT,
	44	QP_MTU,
	45	QP_N_RECV,
	46	QP_RECV_SZ,
	47	QP_N_SEND,
	48	QP_LOG_PG_SZ,
	49	QP_RQPN,
	50	};
	51
	52	static char *qp_fields[] = {
	53	[QP_PID] = "pid",
	54	[QP_STATE] = "state",
	55	[QP_XPORT] = "transport",
	56	[QP_MTU] = "mtu",
	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",
	62	};
	63
	64	enum {
	65	EQ_NUM_EQES,
	66	EQ_INTR,
	67	EQ_LOG_PG_SZ,
	68	};
	69
	70	static char *eq_fields[] = {
	71	[EQ_NUM_EQES] = "num_eqes",
	72	[EQ_INTR] = "intr",
	73	[EQ_LOG_PG_SZ] = "log_page_size",
	74	};
	75
	76	enum {
	77	CQ_PID,
	78	CQ_NUM_CQES,
	79	CQ_LOG_PG_SZ,
	80	};
	81
	82	static char *cq_fields[] = {
	83	[CQ_PID] = "pid",
	84	[CQ_NUM_CQES] = "num_cqes",
	85	[CQ_LOG_PG_SZ] = "log_page_size",
	86	};
	87
	88	struct dentry *mlx5_debugfs_root;
	89	EXPORT_SYMBOL(mlx5_debugfs_root);
	90
	91	void mlx5_register_debugfs(void)
	92	{
	93	mlx5_debugfs_root = debugfs_create_dir("mlx5", NULL);
e126ba97 EC	94	}
	95
	96	void mlx5_unregister_debugfs(void)
	97	{
	98	debugfs_remove(mlx5_debugfs_root);
	99	}
	100
66771a1c MS	101	struct dentry mlx5_debugfs_get_dev_root(struct mlx5_core_dev dev)
	102	{
	103	return dev->priv.dbg.dbg_root;
	104	}
	105	EXPORT_SYMBOL(mlx5_debugfs_get_dev_root);
	106
9f818c8a	107	void mlx5_qp_debugfs_init(struct mlx5_core_dev *dev)
e126ba97	108	{
66771a1c	109	dev->priv.dbg.qp_debugfs = debugfs_create_dir("QPs", dev->priv.dbg.dbg_root);
e126ba97	110	}
333fbaa0	111	EXPORT_SYMBOL(mlx5_qp_debugfs_init);
e126ba97 EC	112
	113	void mlx5_qp_debugfs_cleanup(struct mlx5_core_dev *dev)
	114	{
66771a1c	115	debugfs_remove_recursive(dev->priv.dbg.qp_debugfs);
e126ba97	116	}
333fbaa0	117	EXPORT_SYMBOL(mlx5_qp_debugfs_cleanup);
e126ba97	118
9f818c8a	119	void mlx5_eq_debugfs_init(struct mlx5_core_dev *dev)
e126ba97	120	{
66771a1c	121	dev->priv.dbg.eq_debugfs = debugfs_create_dir("EQs", dev->priv.dbg.dbg_root);
e126ba97 EC	122	}
	123
	124	void mlx5_eq_debugfs_cleanup(struct mlx5_core_dev *dev)
	125	{
66771a1c	126	debugfs_remove_recursive(dev->priv.dbg.eq_debugfs);
e126ba97 EC	127	}
	128
	129	static ssize_t average_read(struct file filp, char __user buf, size_t count,
	130	loff_t *pos)
	131	{
	132	struct mlx5_cmd_stats *stats;
	133	u64 field = 0;
	134	int ret;
e126ba97 EC	135	char tbuf[22];
e126ba97 EC	136
e126ba97	137	stats = filp->private_data;
746b5583	138	spin_lock_irq(&stats->lock);
e126ba97	139	if (stats->n)
9a0f06fe	140	field = div64_u64(stats->sum, stats->n);
746b5583	141	spin_unlock_irq(&stats->lock);
e126ba97	142	ret = snprintf(tbuf, sizeof(tbuf), "%llu\n", field);
31e33a5b	143	return simple_read_from_buffer(buf, count, pos, tbuf, ret);
e126ba97 EC	144	}
e126ba97 EC	145
e126ba97 EC	146	static ssize_t average_write(struct file filp, const char __user buf,
	147	size_t count, loff_t *pos)
	148	{
	149	struct mlx5_cmd_stats *stats;
	150
	151	stats = filp->private_data;
746b5583	152	spin_lock_irq(&stats->lock);
e126ba97 EC	153	stats->sum = 0;
e126ba97 EC	154	stats->n = 0;
746b5583	155	spin_unlock_irq(&stats->lock);
e126ba97 EC	156
	157	*pos += count;
	158
	159	return count;
	160	}
	161
	162	static const struct file_operations stats_fops = {
	163	.owner = THIS_MODULE,
	164	.open = simple_open,
	165	.read = average_read,
	166	.write = average_write,
	167	};
	168
e723f866 TT	169	static ssize_t slots_read(struct file filp, char __user buf, size_t count,
	170	loff_t *pos)
	171	{
	172	struct mlx5_cmd *cmd;
	173	char tbuf[6];
	174	int weight;
	175	int field;
	176	int ret;
	177
	178	cmd = filp->private_data;
	179	weight = bitmap_weight(&cmd->bitmask, cmd->max_reg_cmds);
	180	field = cmd->max_reg_cmds - weight;
	181	ret = snprintf(tbuf, sizeof(tbuf), "%d\n", field);
	182	return simple_read_from_buffer(buf, count, pos, tbuf, ret);
	183	}
	184
	185	static const struct file_operations slots_fops = {
	186	.owner = THIS_MODULE,
	187	.open = simple_open,
	188	.read = slots_read,
	189	};
	190
9f818c8a	191	void mlx5_cmdif_debugfs_init(struct mlx5_core_dev *dev)
e126ba97 EC	192	{
	193	struct mlx5_cmd_stats *stats;
	194	struct dentry **cmd;
	195	const char *namep;
e126ba97 EC	196	int i;
e126ba97 EC	197
66771a1c MS	198	cmd = &dev->priv.dbg.cmdif_debugfs;
66771a1c MS	199	*cmd = debugfs_create_dir("commands", dev->priv.dbg.dbg_root);
e126ba97	200
e723f866 TT	201	debugfs_create_file("slots_inuse", 0400, *cmd, &dev->cmd, &slots_fops);
e723f866 TT	202
2553f421	203	for (i = 0; i < MLX5_CMD_OP_MAX; i++) {
e126ba97 EC	204	stats = &dev->cmd.stats[i];
	205	namep = mlx5_command_str(i);
	206	if (strcmp(namep, "unknown command opcode")) {
	207	stats->root = debugfs_create_dir(namep, *cmd);
9f818c8a GKH	208
	209	debugfs_create_file("average", 0400, stats->root, stats,
	210	&stats_fops);
	211	debugfs_create_u64("n", 0400, stats->root, &stats->n);
34f46ae0 MS	212	debugfs_create_u64("failed", 0400, stats->root, &stats->failed);
	213	debugfs_create_u64("failed_mbox_status", 0400, stats->root,
	214	&stats->failed_mbox_status);
	215	debugfs_create_u32("last_failed_errno", 0400, stats->root,
	216	&stats->last_failed_errno);
	217	debugfs_create_u8("last_failed_mbox_status", 0400, stats->root,
	218	&stats->last_failed_mbox_status);
1d2c717b MS	219	debugfs_create_x32("last_failed_syndrome", 0400, stats->root,
1d2c717b MS	220	&stats->last_failed_syndrome);
e126ba97 EC	221	}
e126ba97 EC	222	}
e126ba97 EC	223	}
	224
	225	void mlx5_cmdif_debugfs_cleanup(struct mlx5_core_dev *dev)
	226	{
66771a1c	227	debugfs_remove_recursive(dev->priv.dbg.cmdif_debugfs);
e126ba97 EC	228	}
e126ba97 EC	229
9f818c8a	230	void mlx5_cq_debugfs_init(struct mlx5_core_dev *dev)
e126ba97	231	{
66771a1c	232	dev->priv.dbg.cq_debugfs = debugfs_create_dir("CQs", dev->priv.dbg.dbg_root);
e126ba97 EC	233	}
	234
	235	void mlx5_cq_debugfs_cleanup(struct mlx5_core_dev *dev)
	236	{
66771a1c	237	debugfs_remove_recursive(dev->priv.dbg.cq_debugfs);
e126ba97 EC	238	}
e126ba97 EC	239
4e05cbf0 MS	240	void mlx5_pages_debugfs_init(struct mlx5_core_dev *dev)
	241	{
	242	struct dentry *pages;
	243
	244	dev->priv.dbg.pages_debugfs = debugfs_create_dir("pages", dev->priv.dbg.dbg_root);
	245	pages = dev->priv.dbg.pages_debugfs;
	246
	247	debugfs_create_u32("fw_pages_total", 0400, pages, &dev->priv.fw_pages);
c3bdbaea	248	debugfs_create_u32("fw_pages_vfs", 0400, pages, &dev->priv.page_counters[MLX5_VF]);
395ccd6e	249	debugfs_create_u32("fw_pages_ec_vfs", 0400, pages, &dev->priv.page_counters[MLX5_EC_VF]);
9965bbeb	250	debugfs_create_u32("fw_pages_sfs", 0400, pages, &dev->priv.page_counters[MLX5_SF]);
c3bdbaea	251	debugfs_create_u32("fw_pages_host_pf", 0400, pages, &dev->priv.page_counters[MLX5_HOST_PF]);
32071187 MS	252	debugfs_create_u32("fw_pages_alloc_failed", 0400, pages, &dev->priv.fw_pages_alloc_failed);
	253	debugfs_create_u32("fw_pages_give_dropped", 0400, pages, &dev->priv.give_pages_dropped);
	254	debugfs_create_u32("fw_pages_reclaim_discard", 0400, pages,
	255	&dev->priv.reclaim_pages_discard);
4e05cbf0 MS	256	}
	257
	258	void mlx5_pages_debugfs_cleanup(struct mlx5_core_dev *dev)
	259	{
	260	debugfs_remove_recursive(dev->priv.dbg.pages_debugfs);
	261	}
	262
e126ba97	263	static u64 qp_read_field(struct mlx5_core_dev dev, struct mlx5_core_qp qp,
db81a5c3	264	int index, int *is_str)
e126ba97	265	{
e1167e16	266	int outlen = MLX5_ST_SZ_BYTES(query_qp_out);
57a6c5e9	267	u32 in[MLX5_ST_SZ_DW(query_qp_in)] = {};
e126ba97	268	u64 param = 0;
e1167e16	269	u32 *out;
57a6c5e9 LR	270	int state;
57a6c5e9 LR	271	u32 *qpc;
e126ba97	272	int err;
e126ba97	273
e1167e16 AB	274	out = kzalloc(outlen, GFP_KERNEL);
	275	if (!out)
	276	return 0;
	277
57a6c5e9 LR	278	MLX5_SET(query_qp_in, in, opcode, MLX5_CMD_OP_QUERY_QP);
	279	MLX5_SET(query_qp_in, in, qpn, qp->qpn);
	280	err = mlx5_cmd_exec_inout(dev, query_qp, in, out);
	281	if (err)
e1167e16	282	goto out;
e126ba97	283
db81a5c3	284	*is_str = 0;
09a7d9ec	285
57a6c5e9	286	qpc = MLX5_ADDR_OF(query_qp_out, out, qpc);
e126ba97 EC	287	switch (index) {
	288	case QP_PID:
	289	param = qp->pid;
	290	break;
	291	case QP_STATE:
57a6c5e9 LR	292	state = MLX5_GET(qpc, qpc, state);
57a6c5e9 LR	293	param = (unsigned long)mlx5_qp_state_str(state);
db81a5c3	294	*is_str = 1;
e126ba97 EC	295	break;
e126ba97 EC	296	case QP_XPORT:
57a6c5e9	297	param = (unsigned long)mlx5_qp_type_str(MLX5_GET(qpc, qpc, st));
db81a5c3	298	*is_str = 1;
e126ba97 EC	299	break;
e126ba97 EC	300	case QP_MTU:
57a6c5e9	301	switch (MLX5_GET(qpc, qpc, mtu)) {
db81a5c3 EC	302	case IB_MTU_256:
	303	param = 256;
	304	break;
	305	case IB_MTU_512:
	306	param = 512;
	307	break;
	308	case IB_MTU_1024:
	309	param = 1024;
	310	break;
	311	case IB_MTU_2048:
	312	param = 2048;
	313	break;
	314	case IB_MTU_4096:
	315	param = 4096;
	316	break;
	317	default:
	318	param = 0;
	319	}
e126ba97 EC	320	break;
e126ba97 EC	321	case QP_N_RECV:
57a6c5e9	322	param = 1 << MLX5_GET(qpc, qpc, log_rq_size);
e126ba97 EC	323	break;
e126ba97 EC	324	case QP_RECV_SZ:
57a6c5e9	325	param = 1 << (MLX5_GET(qpc, qpc, log_rq_stride) + 4);
e126ba97 EC	326	break;
e126ba97 EC	327	case QP_N_SEND:
57a6c5e9 LR	328	if (!MLX5_GET(qpc, qpc, no_sq))
57a6c5e9 LR	329	param = 1 << MLX5_GET(qpc, qpc, log_sq_size);
e126ba97 EC	330	break;
e126ba97 EC	331	case QP_LOG_PG_SZ:
57a6c5e9	332	param = MLX5_GET(qpc, qpc, log_page_size) + 12;
e126ba97 EC	333	break;
e126ba97 EC	334	case QP_RQPN:
57a6c5e9	335	param = MLX5_GET(qpc, qpc, remote_qpn);
e126ba97 EC	336	break;
e126ba97 EC	337	}
e1167e16 AB	338	out:
e1167e16 AB	339	kfree(out);
e126ba97 EC	340	return param;
	341	}
	342
	343	static u64 eq_read_field(struct mlx5_core_dev dev, struct mlx5_eq eq,
	344	int index)
	345	{
73b626c1	346	int outlen = MLX5_ST_SZ_BYTES(query_eq_out);
e36fb468	347	u32 in[MLX5_ST_SZ_DW(query_eq_in)] = {};
e126ba97	348	u64 param = 0;
73b626c1 SM	349	void *ctx;
73b626c1 SM	350	u32 *out;
e126ba97 EC	351	int err;
e126ba97 EC	352
73b626c1	353	out = kzalloc(outlen, GFP_KERNEL);
e126ba97 EC	354	if (!out)
	355	return param;
	356
e36fb468 LR	357	MLX5_SET(query_eq_in, in, opcode, MLX5_CMD_OP_QUERY_EQ);
	358	MLX5_SET(query_eq_in, in, eq_number, eq->eqn);
	359	err = mlx5_cmd_exec_inout(dev, query_eq, in, out);
e126ba97 EC	360	if (err) {
	361	mlx5_core_warn(dev, "failed to query eq\n");
	362	goto out;
	363	}
73b626c1	364	ctx = MLX5_ADDR_OF(query_eq_out, out, eq_context_entry);
e126ba97 EC	365
	366	switch (index) {
	367	case EQ_NUM_EQES:
73b626c1	368	param = 1 << MLX5_GET(eqc, ctx, log_eq_size);
e126ba97 EC	369	break;
e126ba97 EC	370	case EQ_INTR:
73b626c1	371	param = MLX5_GET(eqc, ctx, intr);
e126ba97 EC	372	break;
e126ba97 EC	373	case EQ_LOG_PG_SZ:
73b626c1	374	param = MLX5_GET(eqc, ctx, log_page_size) + 12;
e126ba97 EC	375	break;
	376	}
	377
	378	out:
	379	kfree(out);
	380	return param;
	381	}
	382
	383	static u64 cq_read_field(struct mlx5_core_dev dev, struct mlx5_core_cq cq,
	384	int index)
	385	{
27827786	386	int outlen = MLX5_ST_SZ_BYTES(query_cq_out);
e126ba97	387	u64 param = 0;
27827786 SM	388	void *ctx;
27827786 SM	389	u32 *out;
e126ba97 EC	390	int err;
e126ba97 EC	391
1b9a07ee	392	out = kvzalloc(outlen, GFP_KERNEL);
e126ba97 EC	393	if (!out)
	394	return param;
	395
d1f62050	396	err = mlx5_core_query_cq(dev, cq, out);
e126ba97 EC	397	if (err) {
	398	mlx5_core_warn(dev, "failed to query cq\n");
	399	goto out;
	400	}
27827786	401	ctx = MLX5_ADDR_OF(query_cq_out, out, cq_context);
e126ba97 EC	402
	403	switch (index) {
	404	case CQ_PID:
	405	param = cq->pid;
	406	break;
	407	case CQ_NUM_CQES:
27827786	408	param = 1 << MLX5_GET(cqc, ctx, log_cq_size);
e126ba97 EC	409	break;
e126ba97 EC	410	case CQ_LOG_PG_SZ:
27827786	411	param = MLX5_GET(cqc, ctx, log_page_size);
e126ba97 EC	412	break;
	413	}
	414
	415	out:
27827786	416	kvfree(out);
e126ba97 EC	417	return param;
	418	}
	419
	420	static ssize_t dbg_read(struct file filp, char __user buf, size_t count,
	421	loff_t *pos)
	422	{
	423	struct mlx5_field_desc *desc;
	424	struct mlx5_rsc_debug *d;
	425	char tbuf[18];
db81a5c3	426	int is_str = 0;
e126ba97 EC	427	u64 field;
e126ba97 EC	428	int ret;
e126ba97	429
e126ba97 EC	430	desc = filp->private_data;
	431	d = (void )(desc - desc->i) - sizeof(d);
	432	switch (d->type) {
	433	case MLX5_DBG_RSC_QP:
db81a5c3	434	field = qp_read_field(d->dev, d->object, desc->i, &is_str);
e126ba97 EC	435	break;
	436
	437	case MLX5_DBG_RSC_EQ:
	438	field = eq_read_field(d->dev, d->object, desc->i);
	439	break;
	440
	441	case MLX5_DBG_RSC_CQ:
	442	field = cq_read_field(d->dev, d->object, desc->i);
	443	break;
	444
	445	default:
	446	mlx5_core_warn(d->dev, "invalid resource type %d\n", d->type);
	447	return -EINVAL;
	448	}
	449
db81a5c3	450	if (is_str)
065bd8c2	451	ret = snprintf(tbuf, sizeof(tbuf), "%s\n", (const char *)(unsigned long)field);
db81a5c3 EC	452	else
	453	ret = snprintf(tbuf, sizeof(tbuf), "0x%llx\n", field);
	454
31e33a5b	455	return simple_read_from_buffer(buf, count, pos, tbuf, ret);
e126ba97 EC	456	}
	457
	458	static const struct file_operations fops = {
	459	.owner = THIS_MODULE,
	460	.open = simple_open,
	461	.read = dbg_read,
	462	};
	463
	464	static int add_res_tree(struct mlx5_core_dev *dev, enum dbg_rsc_type type,
	465	struct dentry root, struct mlx5_rsc_debug *dbg,
	466	int rsn, char *field, int nfile, void data)
	467	{
	468	struct mlx5_rsc_debug *d;
	469	char resn[32];
e126ba97 EC	470	int i;
e126ba97 EC	471
acafe7e3	472	d = kzalloc(struct_size(d, fields, nfile), GFP_KERNEL);
e126ba97 EC	473	if (!d)
	474	return -ENOMEM;
	475
	476	d->dev = dev;
	477	d->object = data;
	478	d->type = type;
	479	sprintf(resn, "0x%x", rsn);
	480	d->root = debugfs_create_dir(resn, root);
e126ba97 EC	481
	482	for (i = 0; i < nfile; i++) {
	483	d->fields[i].i = i;
9f818c8a GKH	484	debugfs_create_file(field[i], 0400, d->root, &d->fields[i],
9f818c8a GKH	485	&fops);
e126ba97 EC	486	}
	487	*dbg = d;
	488
	489	return 0;
e126ba97 EC	490	}
	491
	492	static void rem_res_tree(struct mlx5_rsc_debug *d)
	493	{
	494	debugfs_remove_recursive(d->root);
	495	kfree(d);
	496	}
	497
	498	int mlx5_debug_qp_add(struct mlx5_core_dev dev, struct mlx5_core_qp qp)
	499	{
	500	int err;
	501
	502	if (!mlx5_debugfs_root)
	503	return 0;
	504
66771a1c	505	err = add_res_tree(dev, MLX5_DBG_RSC_QP, dev->priv.dbg.qp_debugfs,
e126ba97 EC	506	&qp->dbg, qp->qpn, qp_fields,
	507	ARRAY_SIZE(qp_fields), qp);
	508	if (err)
	509	qp->dbg = NULL;
	510
	511	return err;
	512	}
333fbaa0	513	EXPORT_SYMBOL(mlx5_debug_qp_add);
e126ba97 EC	514
	515	void mlx5_debug_qp_remove(struct mlx5_core_dev dev, struct mlx5_core_qp qp)
	516	{
c023b61a	517	if (!mlx5_debugfs_root \|\| !qp->dbg)
e126ba97 EC	518	return;
e126ba97 EC	519
c023b61a PH	520	rem_res_tree(qp->dbg);
c023b61a PH	521	qp->dbg = NULL;
e126ba97	522	}
333fbaa0	523	EXPORT_SYMBOL(mlx5_debug_qp_remove);
e126ba97	524
e126ba97 EC	525	int mlx5_debug_eq_add(struct mlx5_core_dev dev, struct mlx5_eq eq)
	526	{
	527	int err;
	528
	529	if (!mlx5_debugfs_root)
	530	return 0;
	531
66771a1c	532	err = add_res_tree(dev, MLX5_DBG_RSC_EQ, dev->priv.dbg.eq_debugfs,
e126ba97 EC	533	&eq->dbg, eq->eqn, eq_fields,
	534	ARRAY_SIZE(eq_fields), eq);
	535	if (err)
	536	eq->dbg = NULL;
	537
	538	return err;
	539	}
	540
	541	void mlx5_debug_eq_remove(struct mlx5_core_dev dev, struct mlx5_eq eq)
	542	{
	543	if (!mlx5_debugfs_root)
	544	return;
	545
	546	if (eq->dbg)
	547	rem_res_tree(eq->dbg);
	548	}
	549
	550	int mlx5_debug_cq_add(struct mlx5_core_dev dev, struct mlx5_core_cq cq)
	551	{
	552	int err;
	553
	554	if (!mlx5_debugfs_root)
	555	return 0;
	556
66771a1c	557	err = add_res_tree(dev, MLX5_DBG_RSC_CQ, dev->priv.dbg.cq_debugfs,
e126ba97 EC	558	&cq->dbg, cq->cqn, cq_fields,
	559	ARRAY_SIZE(cq_fields), cq);
	560	if (err)
	561	cq->dbg = NULL;
	562
	563	return err;
	564	}
	565
	566	void mlx5_debug_cq_remove(struct mlx5_core_dev dev, struct mlx5_core_cq cq)
	567	{
	568	if (!mlx5_debugfs_root)
	569	return;
	570
76ded29d	571	if (cq->dbg) {
e126ba97	572	rem_res_tree(cq->dbg);
76ded29d VF	573	cq->dbg = NULL;
76ded29d VF	574	}
e126ba97	575	}