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authorArik Nemtsov <arik@wizery.com>2011-04-18 14:15:29 +0300
committerLuciano Coelho <coelho@ti.com>2011-05-02 10:31:34 +0300
commit2d66bee7fbd38d28e9ed12f45b8e9db8e6aa0c49 (patch)
treed69b536641788a79568cd6e67c93b79812ce7187
parent7dece1c8e1044287287d44ac183a946333b55fc3 (diff)
downloadop-kernel-dev-2d66bee7fbd38d28e9ed12f45b8e9db8e6aa0c49.zip
op-kernel-dev-2d66bee7fbd38d28e9ed12f45b8e9db8e6aa0c49.tar.gz
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: Arik Nemtsov <arik@wizery.com> Signed-off-by: Luciano Coelho <coelho@ti.com>
-rw-r--r--drivers/net/wireless/wl12xx/debugfs.c87
1 files changed, 87 insertions, 0 deletions
diff --git a/drivers/net/wireless/wl12xx/debugfs.c b/drivers/net/wireless/wl12xx/debugfs.c
index a2b55e5..b2f692b 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 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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