Commit 712b6cf5 authored by Tomas Winkler's avatar Tomas Winkler Committed by John W. Linville

iwlwifi: Add debugfs to iwl core

This patch adds debugfs support to iwl core
currently only iwl4965 is supported
Signed-off-by: default avatarTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: default avatarReinette Chatre <reinette.chatre@intel.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 19758bef
......@@ -76,6 +76,12 @@ config IWLWIFI_DEBUG
as the debug information can assist others in helping you resolve
any problems you may encounter.
config IWLWIFI_DEBUGFS
bool "Iwlwifi debugfs support"
depends on IWLCORE && IWLWIFI_DEBUG && MAC80211_DEBUGFS
---help---
Enable creation of debugfs files for the iwlwifi drivers.
config IWL3945
tristate "Intel PRO/Wireless 3945ABG/BG Network Connection"
depends on PCI && MAC80211 && WLAN_80211 && EXPERIMENTAL
......
obj-$(CONFIG_IWLCORE) += iwlcore.o
iwlcore-objs = iwl-core.o iwl-eeprom.o
ifeq ($(CONFIG_IWLWIFI_DEBUGFS),y)
iwlcore-objs += iwl-debugfs.o
endif
obj-$(CONFIG_IWL3945) += iwl3945.o
iwl3945-objs = iwl3945-base.o iwl-3945.o iwl-3945-rs.o
......
......@@ -1212,7 +1212,11 @@ struct iwl_priv {
/* debugging info */
u32 framecnt_to_us;
atomic_t restrict_refcnt;
#endif
#ifdef CONFIG_IWLWIFI_DEBUGFS
/* debugfs */
struct iwl_debugfs *dbgfs;
#endif /* CONFIG_IWLWIFI_DEBUGFS */
#endif /* CONFIG_IWLWIFI_DEBUG */
struct work_struct txpower_work;
#ifdef CONFIG_IWL4965_SENSITIVITY
......
......@@ -30,6 +30,7 @@
#include <linux/module.h>
#include <linux/version.h>
struct iwl_priv; /* FIXME: remove */
#include "iwl-debug.h"
#include "iwl-eeprom.h"
#include "iwl-core.h"
......@@ -37,7 +38,7 @@
MODULE_DESCRIPTION("iwl core");
MODULE_VERSION(IWLWIFI_VERSION);
MODULE_AUTHOR(DRV_COPYRIGHT);
MODULE_LICENSE("GPL/BSD");
MODULE_LICENSE("GPL");
#ifdef CONFIG_IWLWIFI_DEBUG
u32 iwl_debug_level;
......
......@@ -49,8 +49,27 @@ static inline void iwl_print_hex_dump(int level, void *p, u32 len)
print_hex_dump(KERN_DEBUG, "iwl data: ", DUMP_PREFIX_OFFSET, 16, 1,
p, len, 1);
}
#else
#ifdef CONFIG_IWLWIFI_DEBUGFS
struct iwl_debugfs {
const char *name;
struct dentry *dir_drv;
struct dentry *dir_data;
struct dir_data_files{
struct dentry *file_sram;
struct dentry *file_stations;
struct dentry *file_rx_statistics;
struct dentry *file_tx_statistics;
} dbgfs_data_files;
u32 sram_offset;
u32 sram_len;
};
int iwl_dbgfs_register(struct iwl_priv *priv, const char *name);
void iwl_dbgfs_unregister(struct iwl_priv *priv);
#endif
#else
static inline void IWL_DEBUG(int level, const char *fmt, ...)
{
}
......@@ -64,6 +83,16 @@ static inline void iwl_print_hex_dump(int level, void *p, u32 len)
#ifndef CONFIG_IWLWIFI_DEBUGFS
static inline int iwl_dbgfs_register(struct iwl_priv *priv, const char *name)
{
return 0;
}
static inline void iwl_dbgfs_unregister(struct iwl_priv *priv)
{
}
#endif /* CONFIG_IWLWIFI_DEBUGFS */
/*
* To use the debug system;
*
......
/******************************************************************************
*
* GPL LICENSE SUMMARY
*
* Copyright(c) 2008 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
* USA
*
* The full GNU General Public License is included in this distribution
* in the file called LICENSE.GPL.
*
* Contact Information:
* Tomas Winkler <tomas.winkler@intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*****************************************************************************/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/debugfs.h>
#include <linux/ieee80211.h>
#include <net/mac80211.h>
#include "iwl-4965.h"
#include "iwl-debug.h"
#include "iwl-4965-io.h"
/* create and remove of files */
#define DEBUGFS_ADD_DIR(name, parent) do { \
dbgfs->dir_##name = debugfs_create_dir(#name, parent); \
if (!(dbgfs->dir_##name)) \
goto err; \
} while (0)
#define DEBUGFS_ADD_FILE(name, parent) do { \
dbgfs->dbgfs_##parent##_files.file_##name = \
debugfs_create_file(#name, 0644, dbgfs->dir_##parent, priv, \
&iwl_dbgfs_##name##_ops); \
if (!(dbgfs->dbgfs_##parent##_files.file_##name)) \
goto err; \
} while (0)
#define DEBUGFS_REMOVE(name) do { \
debugfs_remove(name); \
name = NULL; \
} while (0);
/* file operation */
#define DEBUGFS_READ_FUNC(name) \
static ssize_t iwl_dbgfs_##name##_read(struct file *file, \
char __user *user_buf, \
size_t count, loff_t *ppos);
#define DEBUGFS_WRITE_FUNC(name) \
static ssize_t iwl_dbgfs_##name##_write(struct file *file, \
const char __user *user_buf, \
size_t count, loff_t *ppos);
static int iwl_dbgfs_open_file_generic(struct inode *inode, struct file *file)
{
file->private_data = inode->i_private;
return 0;
}
#define DEBUGFS_READ_FILE_OPS(name) \
DEBUGFS_READ_FUNC(name); \
static const struct file_operations iwl_dbgfs_##name##_ops = { \
.read = iwl_dbgfs_##name##_read, \
.open = iwl_dbgfs_open_file_generic, \
};
#define DEBUGFS_READ_WRITE_FILE_OPS(name) \
DEBUGFS_READ_FUNC(name); \
DEBUGFS_WRITE_FUNC(name); \
static const struct file_operations iwl_dbgfs_##name##_ops = { \
.write = iwl_dbgfs_##name##_write, \
.read = iwl_dbgfs_##name##_read, \
.open = iwl_dbgfs_open_file_generic, \
};
static ssize_t iwl_dbgfs_tx_statistics_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos) {
struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
char buf[256];
int pos = 0;
pos += sprintf(buf+pos, "mgmt: %u\n", priv->tx_stats[0].cnt);
pos += sprintf(buf+pos, "ctrl: %u\n", priv->tx_stats[1].cnt);
pos += sprintf(buf+pos, "data: %u\n", priv->tx_stats[2].cnt);
return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}
static ssize_t iwl_dbgfs_rx_statistics_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos) {
struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
char buf[256];
int pos = 0;
pos += sprintf(buf+pos, "mgmt: %u\n", priv->rx_stats[0].cnt);
pos += sprintf(buf+pos, "ctrl: %u\n", priv->rx_stats[1].cnt);
pos += sprintf(buf+pos, "data: %u\n", priv->rx_stats[2].cnt);
return simple_read_from_buffer(user_buf, count, ppos, buf, pos);
}
#define BYTE1_MASK 0x000000ff;
#define BYTE2_MASK 0x0000ffff;
#define BYTE3_MASK 0x00ffffff;
static ssize_t iwl_dbgfs_sram_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
u32 val;
char buf[1024];
ssize_t ret;
int i;
int pos = 0;
struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
printk(KERN_DEBUG "offset is: 0x%x\tlen is: 0x%x\n",
priv->dbgfs->sram_offset, priv->dbgfs->sram_len);
iwl4965_grab_nic_access(priv);
for (i = priv->dbgfs->sram_len; i > 0; i -= 4) {
val = iwl4965_read_targ_mem(priv, priv->dbgfs->sram_offset + \
priv->dbgfs->sram_len - i);
if (i < 4) {
switch (i) {
case 1:
val &= BYTE1_MASK;
break;
case 2:
val &= BYTE2_MASK;
break;
case 3:
val &= BYTE3_MASK;
break;
}
}
pos += sprintf(buf+pos, "0x%08x ", val);
}
pos += sprintf(buf+pos, "\n");
iwl4965_release_nic_access(priv);
ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
return ret;
}
static ssize_t iwl_dbgfs_sram_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct iwl_priv *priv = file->private_data;
char buf[64];
int buf_size;
u32 offset, len;
memset(buf, 0, sizeof(buf));
buf_size = min(count, sizeof(buf) - 1);
if (copy_from_user(buf, user_buf, buf_size))
return -EFAULT;
if (sscanf(buf, "%x,%x", &offset, &len) == 2) {
priv->dbgfs->sram_offset = offset;
priv->dbgfs->sram_len = len;
} else {
priv->dbgfs->sram_offset = 0;
priv->dbgfs->sram_len = 0;
}
return count;
}
static ssize_t iwl_dbgfs_stations_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct iwl_priv *priv = (struct iwl_priv *)file->private_data;
struct iwl4965_station_entry *station;
int max_sta = priv->hw_setting.max_stations;
char *buf;
int i, j, pos = 0;
ssize_t ret;
/* Add 30 for initial string */
const size_t bufsz = 30 + sizeof(char) * 500 * (priv->num_stations);
DECLARE_MAC_BUF(mac);
buf = kmalloc(bufsz, GFP_KERNEL);
if(!buf)
return -ENOMEM;
pos += sprintf(buf+pos, "num of stations: %d\n\n",
priv->num_stations);
for (i = 0; i < max_sta; i++) {
station = &priv->stations[i];
if (station->used) {
pos += sprintf(buf+pos, "station %d:\ngeneral data:\n",
i+1);
print_mac(mac, station->sta.sta.addr);
pos += sprintf(buf+pos, "id: %u\n",
station->sta.sta.sta_id);
pos += sprintf(buf+pos, "mode: %u\n",
station->sta.mode);
pos += sprintf(buf+pos, "flags: 0x%x\n",
station->sta.station_flags_msk);
pos += sprintf(buf+pos, "ps_status: %u\n",
station->ps_status);
pos += sprintf(buf+pos, "tid data:\n");
pos += sprintf(buf+pos, "seq_num\t\ttxq_id\t");
pos += sprintf(buf+pos, "frame_count\twait_for_ba\t");
pos += sprintf(buf+pos, "start_idx\tbitmap0\t");
pos += sprintf(buf+pos, "bitmap1\trate_n_flags\n");
for (j = 0; j < MAX_TID_COUNT; j++) {
pos += sprintf(buf+pos, "[%d]:\t\t%u\t",
j, station->tid[j].seq_number);
pos += sprintf(buf+pos, "%u\t\t%u\t\t%u\t\t",
station->tid[j].agg.txq_id,
station->tid[j].agg.frame_count,
station->tid[j].agg.wait_for_ba);
pos += sprintf(buf+pos, "%u\t%llu\t%u\n",
station->tid[j].agg.start_idx,
station->tid[j].agg.bitmap,
station->tid[j].agg.rate_n_flags);
}
pos += sprintf(buf+pos, "\n");
}
}
ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
kfree(buf);
return ret;
}
DEBUGFS_READ_WRITE_FILE_OPS(sram);
DEBUGFS_READ_FILE_OPS(stations);
DEBUGFS_READ_FILE_OPS(rx_statistics);
DEBUGFS_READ_FILE_OPS(tx_statistics);
/*
* Create the debugfs files and directories
*
*/
int iwl_dbgfs_register(struct iwl_priv *priv, const char *name)
{
struct iwl_debugfs *dbgfs;
dbgfs = kzalloc(sizeof(struct iwl_debugfs), GFP_KERNEL);
if (!dbgfs) {
goto err;
}
priv->dbgfs = dbgfs;
dbgfs->name = name;
dbgfs->dir_drv = debugfs_create_dir(name, NULL);
if (!dbgfs->dir_drv || IS_ERR(dbgfs->dir_drv)){
goto err;
}
DEBUGFS_ADD_DIR(data, dbgfs->dir_drv);
DEBUGFS_ADD_FILE(sram, data);
DEBUGFS_ADD_FILE(stations, data);
DEBUGFS_ADD_FILE(rx_statistics, data);
DEBUGFS_ADD_FILE(tx_statistics, data);
return 0;
err:
IWL_ERROR("Can't open the debugfs directory\n");
iwl_dbgfs_unregister(priv);
return -ENOENT;
}
EXPORT_SYMBOL(iwl_dbgfs_register);
/**
* Remove the debugfs files and directories
*
*/
void iwl_dbgfs_unregister(struct iwl_priv *priv)
{
if (!(priv->dbgfs))
return;
DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_rx_statistics);
DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_tx_statistics);
DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_sram);
DEBUGFS_REMOVE(priv->dbgfs->dbgfs_data_files.file_stations);
DEBUGFS_REMOVE(priv->dbgfs->dir_data);
DEBUGFS_REMOVE(priv->dbgfs->dir_drv);
kfree(priv->dbgfs);
priv->dbgfs = NULL;
}
EXPORT_SYMBOL(iwl_dbgfs_unregister);
......@@ -8690,6 +8690,11 @@ static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e
goto out_release_irq;
}
err = iwl_dbgfs_register(priv, DRV_NAME);
if (err) {
IWL_ERROR("failed to create debugfs files\n");
goto out_remove_sysfs;
}
/* nic init */
iwl4965_set_bit(priv, CSR_GIO_CHICKEN_BITS,
CSR_GIO_CHICKEN_BITS_REG_BIT_DIS_L0S_EXIT_TIMER);
......@@ -8700,13 +8705,13 @@ static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e
CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000);
if (err < 0) {
IWL_DEBUG_INFO("Failed to init the card\n");
goto out_remove_sysfs;
goto out_remove_dbgfs;
}
/* Read the EEPROM */
err = iwl_eeprom_init(priv);
if (err) {
IWL_ERROR("Unable to init EEPROM\n");
goto out_remove_sysfs;
goto out_remove_dbgfs;
}
/* MAC Address location in EEPROM same for 3945/4965 */
iwl_eeprom_get_mac(priv, priv->mac_addr);
......@@ -8716,7 +8721,7 @@ static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e
err = iwl4965_init_channel_map(priv);
if (err) {
IWL_ERROR("initializing regulatory failed: %d\n", err);
goto out_remove_sysfs;
goto out_remove_dbgfs;
}
err = iwl4965_init_geos(priv);
......@@ -8743,6 +8748,8 @@ static int iwl4965_pci_probe(struct pci_dev *pdev, const struct pci_device_id *e
iwl4965_free_geos(priv);
out_free_channel_map:
iwl4965_free_channel_map(priv);
out_remove_dbgfs:
iwl_dbgfs_unregister(priv);
out_remove_sysfs:
sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
......@@ -8787,6 +8794,7 @@ static void iwl4965_pci_remove(struct pci_dev *pdev)
}
}
iwl_dbgfs_unregister(priv);
sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
iwl4965_dealloc_ucode_pci(priv);
......
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