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Commit 7869b4fa authored by Kalle Valo's avatar Kalle Valo
Browse files

ath10k: add cal_data debugfs file 



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: default avatarKalle Valo <kvalo@qca.qualcomm.com>
parent eef25405

drivers/net/wireless/ath/ath10k/debug.c

+82 −0
Original line number Diff line number Diff line
@@ -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,

drivers/net/wireless/ath/ath10k/hw.h

+2 −0
Original line number Diff line number Diff line
@@ -43,6 +43,8 @@ 


#define REG_DUMP_COUNT_QCA988X 60



#define QCA988X_CAL_DATA_LEN		2116



struct ath10k_fw_ie {

	__le32 id;

	__le32 len;