Commit 2d66bee7 authored by Arik Nemtsov's avatar Arik Nemtsov Committed by Luciano Coelho
Browse files

wl12xx: export driver state to debugfs 



By reading the "driver_state" debugfs value we get all the important
state information from the wl12xx driver. This helps testing and
debugging, particularly in situations where the driver seems "stuck".

Signed-off-by: default avatarArik Nemtsov <arik@wizery.com>
Signed-off-by: default avatarLuciano Coelho <coelho@ti.com>
parent 7dece1c8

drivers/net/wireless/wl12xx/debugfs.c

+87 −0
Original line number Diff line number Diff line
@@ -310,6 +310,92 @@ static const struct file_operations start_recovery_ops = { 
	.llseek = default_llseek,

};



static ssize_t driver_state_read(struct file *file, char __user *user_buf,

				 size_t count, loff_t *ppos)

{

	struct wl1271 *wl = file->private_data;

	int res = 0;

	char buf[1024];



	mutex_lock(&wl->mutex);



#define DRIVER_STATE_PRINT(x, fmt)   \

	(res += scnprintf(buf + res, sizeof(buf) - res,\

			  #x " = " fmt "\n", wl->x))



#define DRIVER_STATE_PRINT_LONG(x) DRIVER_STATE_PRINT(x, "%ld")

#define DRIVER_STATE_PRINT_INT(x)  DRIVER_STATE_PRINT(x, "%d")

#define DRIVER_STATE_PRINT_STR(x)  DRIVER_STATE_PRINT(x, "%s")

#define DRIVER_STATE_PRINT_LHEX(x) DRIVER_STATE_PRINT(x, "0x%lx")

#define DRIVER_STATE_PRINT_HEX(x)  DRIVER_STATE_PRINT(x, "0x%x")



	DRIVER_STATE_PRINT_INT(tx_blocks_available);

	DRIVER_STATE_PRINT_INT(tx_allocated_blocks);

	DRIVER_STATE_PRINT_INT(tx_frames_cnt);

	DRIVER_STATE_PRINT_LHEX(tx_frames_map[0]);

	DRIVER_STATE_PRINT_INT(tx_queue_count);

	DRIVER_STATE_PRINT_INT(tx_packets_count);

	DRIVER_STATE_PRINT_INT(tx_results_count);

	DRIVER_STATE_PRINT_LHEX(flags);

	DRIVER_STATE_PRINT_INT(tx_blocks_freed[0]);

	DRIVER_STATE_PRINT_INT(tx_blocks_freed[1]);

	DRIVER_STATE_PRINT_INT(tx_blocks_freed[2]);

	DRIVER_STATE_PRINT_INT(tx_blocks_freed[3]);

	DRIVER_STATE_PRINT_INT(tx_security_last_seq);

	DRIVER_STATE_PRINT_INT(rx_counter);

	DRIVER_STATE_PRINT_INT(session_counter);

	DRIVER_STATE_PRINT_INT(state);

	DRIVER_STATE_PRINT_INT(bss_type);

	DRIVER_STATE_PRINT_INT(channel);

	DRIVER_STATE_PRINT_HEX(rate_set);

	DRIVER_STATE_PRINT_HEX(basic_rate_set);

	DRIVER_STATE_PRINT_HEX(basic_rate);

	DRIVER_STATE_PRINT_INT(band);

	DRIVER_STATE_PRINT_INT(beacon_int);

	DRIVER_STATE_PRINT_INT(psm_entry_retry);

	DRIVER_STATE_PRINT_INT(ps_poll_failures);

	DRIVER_STATE_PRINT_HEX(filters);

	DRIVER_STATE_PRINT_HEX(rx_config);

	DRIVER_STATE_PRINT_HEX(rx_filter);

	DRIVER_STATE_PRINT_INT(power_level);

	DRIVER_STATE_PRINT_INT(rssi_thold);

	DRIVER_STATE_PRINT_INT(last_rssi_event);

	DRIVER_STATE_PRINT_INT(sg_enabled);

	DRIVER_STATE_PRINT_INT(enable_11a);

	DRIVER_STATE_PRINT_INT(noise);

	DRIVER_STATE_PRINT_LHEX(ap_hlid_map[0]);

	DRIVER_STATE_PRINT_INT(last_tx_hlid);

	DRIVER_STATE_PRINT_INT(ba_support);

	DRIVER_STATE_PRINT_HEX(ba_rx_bitmap);

	DRIVER_STATE_PRINT_HEX(ap_fw_ps_map);

	DRIVER_STATE_PRINT_LHEX(ap_ps_map);

	DRIVER_STATE_PRINT_HEX(quirks);

	DRIVER_STATE_PRINT_HEX(irq);

	DRIVER_STATE_PRINT_HEX(ref_clock);

	DRIVER_STATE_PRINT_HEX(tcxo_clock);

	DRIVER_STATE_PRINT_HEX(hw_pg_ver);

	DRIVER_STATE_PRINT_HEX(platform_quirks);

	DRIVER_STATE_PRINT_HEX(chip.id);

	DRIVER_STATE_PRINT_STR(chip.fw_ver_str);



#undef DRIVER_STATE_PRINT_INT

#undef DRIVER_STATE_PRINT_LONG

#undef DRIVER_STATE_PRINT_HEX

#undef DRIVER_STATE_PRINT_LHEX

#undef DRIVER_STATE_PRINT_STR

#undef DRIVER_STATE_PRINT



	mutex_unlock(&wl->mutex);



	return simple_read_from_buffer(user_buf, count, ppos, buf, res);

}



static const struct file_operations driver_state_ops = {

	.read = driver_state_read,

	.open = wl1271_open_file_generic,

	.llseek = default_llseek,

};



static ssize_t dtim_interval_read(struct file *file, char __user *user_buf,

				  size_t count, loff_t *ppos)

{
@@ -549,6 +635,7 @@ static int wl1271_debugfs_add_files(struct wl1271 *wl, 


	DEBUGFS_ADD(gpio_power, rootdir);

	DEBUGFS_ADD(start_recovery, rootdir);

	DEBUGFS_ADD(driver_state, rootdir);

	DEBUGFS_ADD(dtim_interval, rootdir);

	DEBUGFS_ADD(beacon_interval, rootdir);

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