wlcore: gather information about firmware stability

It's sometimes useful to gather information about the firmware
stability in long test runs, especially to see if problems are
recurring frequently or not.  With this commit we count the number of
times a hardware recovery was issued and print it out during recovery
and in the driver_state in debugfs.

Signed-off-by: Luciano Coelho <coelho@ti.com>
Signed-off-by: Igal Chernobelsky <igalc@ti.com>
Signed-off-by: Arik Nemtsov <arik@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

3 files changed, 6 insertions, 1 deletions

diff --git a/drivers/net/wireless/ti/wlcore/debugfs.c b/drivers/net/wireless/ti/wlcore/debugfs.c
index 1cf2cdbae292..e61fc2b01046 100644
--- a/drivers/net/wireless/ti/wlcore/debugfs.c
+++ b/drivers/net/wireless/ti/wlcore/debugfs.c
@@ -490,6 +490,7 @@ static ssize_t driver_state_read(struct file *file, char __user *user_buf,
         DRIVER_STATE_PRINT_HEX(chip.id);
         DRIVER_STATE_PRINT_STR(chip.fw_ver_str);
         DRIVER_STATE_PRINT_STR(chip.phy_fw_ver_str);
+        DRIVER_STATE_PRINT_INT(recovery_count);
 
 #undef DRIVER_STATE_PRINT_INT
 #undef DRIVER_STATE_PRINT_LONG
diff --git a/drivers/net/wireless/ti/wlcore/main.c b/drivers/net/wireless/ti/wlcore/main.c
index 5d3ca6ce9d20..615b40dc981e 100644
--- a/drivers/net/wireless/ti/wlcore/main.c
+++ b/drivers/net/wireless/ti/wlcore/main.c
@@ -879,7 +879,8 @@ static void wlcore_print_recovery(struct wl1271 *wl)
         if (ret < 0)
                 return;
 
-        wl1271_info("pc: 0x%x, hint_sts: 0x%08x", pc, hint_sts);
+        wl1271_info("pc: 0x%x, hint_sts: 0x%08x count: %d",
+                                pc, hint_sts, ++wl->recovery_count);
 
         wlcore_set_partition(wl, &wl->ptable[PART_WORK]);
 }
@@ -5685,6 +5686,7 @@ struct ieee80211_hw *wlcore_alloc_hw(size_t priv_size, u32 aggr_buf_size,
         wl->flags = 0;
         wl->sg_enabled = true;
         wl->sleep_auth = WL1271_PSM_ILLEGAL;
+        wl->recovery_count = 0;
         wl->hw_pg_ver = -1;
         wl->ap_ps_map = 0;
         wl->ap_fw_ps_map = 0;
diff --git a/drivers/net/wireless/ti/wlcore/wlcore.h b/drivers/net/wireless/ti/wlcore/wlcore.h
index 5f580e56a19b..4d5c69ecb022 100644
--- a/drivers/net/wireless/ti/wlcore/wlcore.h
+++ b/drivers/net/wireless/ti/wlcore/wlcore.h
@@ -337,6 +337,8 @@ struct wl1271 {
 
         bool enable_11a;
 
+        int recovery_count;
+
         /* Most recently reported noise in dBm */
         s8 noise;