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: Arik Nemtsov <arik@xxxxxxxxxx>
---
drivers/net/wireless/wl12xx/debugfs.c | 87 +++++++++++++++++++++++++++++++++
1 files changed, 87 insertions(+), 0 deletions(-)
diff --git a/drivers/net/wireless/wl12xx/debugfs.c b/drivers/net/wireless/wl12xx/debugfs.c
index 6eb48b7..6970455 100644
--- a/drivers/net/wireless/wl12xx/debugfs.c
+++ b/drivers/net/wireless/wl12xx/debugfs.c
@@ -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 int wl1271_debugfs_add_files(struct wl1271 *wl,
struct dentry *rootdir)
{
@@ -419,6 +505,7 @@ static int wl1271_debugfs_add_files(struct wl1271 *wl,
DEBUGFS_ADD(gpio_power, rootdir);
DEBUGFS_ADD(start_recovery, rootdir);
+ DEBUGFS_ADD(driver_state, rootdir);
return 0;
--
1.7.1
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
