From b65db4089dfd161286634ec82c7aaec11dc84ac4 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@openwrt.org>
Date: Thu, 15 Sep 2011 17:55:16 +0000
Subject: mac80211: update to wireless-testing 2011-09-14

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@28245 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 .../mac80211/patches/571-ath9k_reset_debug.patch   | 122 +++++++++++++++++++++
 1 file changed, 122 insertions(+)
 create mode 100644 package/mac80211/patches/571-ath9k_reset_debug.patch

(limited to 'package/mac80211/patches/571-ath9k_reset_debug.patch')

diff --git a/package/mac80211/patches/571-ath9k_reset_debug.patch b/package/mac80211/patches/571-ath9k_reset_debug.patch
new file mode 100644
index 0000000000..b87b62c370
--- /dev/null
+++ b/package/mac80211/patches/571-ath9k_reset_debug.patch
@@ -0,0 +1,122 @@
+--- a/drivers/net/wireless/ath/ath9k/debug.h
++++ b/drivers/net/wireless/ath/ath9k/debug.h
+@@ -25,8 +25,10 @@ struct ath_buf;
+ 
+ #ifdef CONFIG_ATH9K_DEBUGFS
+ #define TX_STAT_INC(q, c) sc->debug.stats.txstats[q].c++
++#define RESET_STAT_INC(sc, type) sc->debug.stats.reset[type]++
+ #else
+ #define TX_STAT_INC(q, c) do { } while (0)
++#define RESET_STAT_INC(sc, type) do { } while (0)
+ #endif
+ 
+ #ifdef CONFIG_ATH9K_DEBUGFS
+@@ -171,10 +173,21 @@ struct ath_rx_stats {
+ 	u8 rs_antenna;
+ };
+ 
++enum ath_reset_type {
++	RESET_TYPE_BB_HANG,
++	RESET_TYPE_BB_WATCHDOG,
++	RESET_TYPE_FATAL_INT,
++	RESET_TYPE_TX_ERROR,
++	RESET_TYPE_TX_HANG,
++	RESET_TYPE_PLL_HANG,
++	__RESET_TYPE_MAX
++};
++
+ struct ath_stats {
+ 	struct ath_interrupt_stats istats;
+ 	struct ath_tx_stats txstats[ATH9K_NUM_TX_QUEUES];
+ 	struct ath_rx_stats rxstats;
++	u32 reset[__RESET_TYPE_MAX];
+ };
+ 
+ #define ATH_DBG_MAX_SAMPLES	10
+--- a/drivers/net/wireless/ath/ath9k/main.c
++++ b/drivers/net/wireless/ath/ath9k/main.c
+@@ -679,6 +679,14 @@ void ath9k_tasklet(unsigned long data)
+ 
+ 	if ((status & ATH9K_INT_FATAL) ||
+ 	    (status & ATH9K_INT_BB_WATCHDOG)) {
++		enum ath_reset_type type;
++
++		if (status & ATH9K_INT_FATAL)
++			type = RESET_TYPE_FATAL_INT;
++		else
++			type = RESET_TYPE_BB_WATCHDOG;
++
++		RESET_STAT_INC(sc, type);
+ 		ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
+ 		goto out;
+ 	}
+@@ -995,8 +1003,10 @@ void ath_hw_check(struct work_struct *wo
+ 	ath_dbg(common, ATH_DBG_RESET, "Possible baseband hang, "
+ 		"busy=%d (try %d)\n", busy, sc->hw_busy_count + 1);
+ 	if (busy >= 99) {
+-		if (++sc->hw_busy_count >= 3)
++		if (++sc->hw_busy_count >= 3) {
++			RESET_STAT_INC(sc, RESET_TYPE_BB_HANG);
+ 			ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
++		}
+ 
+ 	} else if (busy >= 0)
+ 		sc->hw_busy_count = 0;
+@@ -1016,6 +1026,7 @@ static void ath_hw_pll_rx_hang_check(str
+ 			/* Rx is hung for more than 500ms. Reset it */
+ 			ath_dbg(common, ATH_DBG_RESET,
+ 				"Possible RX hang, resetting");
++			RESET_STAT_INC(sc, RESET_TYPE_PLL_HANG);
+ 			ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
+ 			count = 0;
+ 		}
+--- a/drivers/net/wireless/ath/ath9k/xmit.c
++++ b/drivers/net/wireless/ath/ath9k/xmit.c
+@@ -587,8 +587,10 @@ static void ath_tx_complete_aggr(struct 
+ 
+ 	rcu_read_unlock();
+ 
+-	if (needreset)
++	if (needreset) {
++		RESET_STAT_INC(sc, RESET_TYPE_TX_ERROR);
+ 		ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
++	}
+ }
+ 
+ static bool ath_lookup_legacy(struct ath_buf *bf)
+@@ -2270,6 +2272,7 @@ static void ath_tx_complete_poll_work(st
+ 	if (needreset) {
+ 		ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_RESET,
+ 			"tx hung, resetting the chip\n");
++		RESET_STAT_INC(sc, RESET_TYPE_TX_HANG);
+ 		ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
+ 	}
+ 
+--- a/drivers/net/wireless/ath/ath9k/debug.c
++++ b/drivers/net/wireless/ath/ath9k/debug.c
+@@ -523,9 +523,22 @@ static ssize_t read_file_wiphy(struct fi
+ 	if (tmp & ATH9K_RX_FILTER_PHYRADAR)
+ 		len += snprintf(buf + len, sizeof(buf) - len, " PHYRADAR");
+ 	if (tmp & ATH9K_RX_FILTER_MCAST_BCAST_ALL)
+-		len += snprintf(buf + len, sizeof(buf) - len, " MCAST_BCAST_ALL\n");
+-	else
+-		len += snprintf(buf + len, sizeof(buf) - len, "\n");
++		len += snprintf(buf + len, sizeof(buf) - len, " MCAST_BCAST_ALL");
++
++	len += snprintf(buf + len, sizeof(buf) - len,
++		       "\n\nReset causes:\n"
++		       "  baseband hang: %d\n"
++		       "  baseband watchdog: %d\n"
++		       "  fatal hardware error interrupt: %d\n"
++		       "  tx hardware error: %d\n"
++		       "  tx path hang: %d\n"
++		       "  pll rx hang: %d\n",
++		       sc->debug.stats.reset[RESET_TYPE_BB_HANG],
++		       sc->debug.stats.reset[RESET_TYPE_BB_WATCHDOG],
++		       sc->debug.stats.reset[RESET_TYPE_FATAL_INT],
++		       sc->debug.stats.reset[RESET_TYPE_TX_ERROR],
++		       sc->debug.stats.reset[RESET_TYPE_TX_HANG],
++		       sc->debug.stats.reset[RESET_TYPE_PLL_HANG]);
+ 
+ 	if (len > sizeof(buf))
+ 		len = sizeof(buf);
-- 
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