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ath10k: add cal_data debugfs file

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Provide calibration data used by the firmware to user space via a debugfs file.
This makes it easier to debug calibration related problems.

Example:

sudo cp /sys/kernel/debug/ieee80211/phy0/ath10k/cal_data 1.cal

Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Kalle Valo 2014-09-24 14:16:58 +03:00
parent eef254051f
commit 7869b4faf5
2 changed files with 84 additions and 0 deletions
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82
drivers/net/wireless/ath/ath10k/debug.c
View file

@ -23,6 +23,7 @@
#include "core.h"
#include "debug.h"
#include "hif.h"
/* ms */
#define ATH10K_DEBUG_HTT_STATS_INTERVAL 1000
@ -1041,6 +1042,84 @@ static const struct file_operations fops_fw_dbglog = {
.llseek = default_llseek,
};
static int ath10k_debug_cal_data_open(struct inode *inode, struct file *file)
{
struct ath10k *ar = inode->i_private;
void *buf;
u32 hi_addr;
__le32 addr;
int ret;
mutex_lock(&ar->conf_mutex);
if (ar->state != ATH10K_STATE_ON &&
ar->state != ATH10K_STATE_UTF) {
ret = -ENETDOWN;
goto err;
}
buf = vmalloc(QCA988X_CAL_DATA_LEN);
if (!buf) {
ret = -ENOMEM;
goto err;
}
hi_addr = host_interest_item_address(HI_ITEM(hi_board_data));
ret = ath10k_hif_diag_read(ar, hi_addr, &addr, sizeof(addr));
if (ret) {
ath10k_warn(ar, "failed to read hi_board_data address: %d\n", ret);
goto err_vfree;
}
ret = ath10k_hif_diag_read(ar, le32_to_cpu(addr), buf,
QCA988X_CAL_DATA_LEN);
if (ret) {
ath10k_warn(ar, "failed to read calibration data: %d\n", ret);
goto err_vfree;
}
file->private_data = buf;
mutex_unlock(&ar->conf_mutex);
return 0;
err_vfree:
vfree(buf);
err:
mutex_unlock(&ar->conf_mutex);
return ret;
}
static ssize_t ath10k_debug_cal_data_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
void *buf = file->private_data;
return simple_read_from_buffer(user_buf, count, ppos,
buf, QCA988X_CAL_DATA_LEN);
}
static int ath10k_debug_cal_data_release(struct inode *inode,
struct file *file)
{
vfree(file->private_data);
return 0;
}
static const struct file_operations fops_cal_data = {
.open = ath10k_debug_cal_data_open,
.read = ath10k_debug_cal_data_read,
.release = ath10k_debug_cal_data_release,
.owner = THIS_MODULE,
.llseek = default_llseek,
};
int ath10k_debug_start(struct ath10k *ar)
{
int ret;
@ -1214,6 +1293,9 @@ int ath10k_debug_register(struct ath10k *ar)
debugfs_create_file("fw_dbglog", S_IRUSR, ar->debug.debugfs_phy,
ar, &fops_fw_dbglog);
debugfs_create_file("cal_data", S_IRUSR, ar->debug.debugfs_phy,
ar, &fops_cal_data);
if (config_enabled(CONFIG_ATH10K_DFS_CERTIFIED)) {
debugfs_create_file("dfs_simulate_radar", S_IWUSR,
ar->debug.debugfs_phy, ar,

2
drivers/net/wireless/ath/ath10k/hw.h
View file

@ -43,6 +43,8 @@
#define REG_DUMP_COUNT_QCA988X 60
#define QCA988X_CAL_DATA_LEN 2116
struct ath10k_fw_ie {
__le32 id;
__le32 len;