ath9k: Add debugfs support for mac/baseband samples

This patch keep track of number of samples that includes
DMA debugs registers, PCU observe, CR, channel noise,
cycle conters, noisefloor history buffer and last N number
of tx and rx descriptor status. These samples are grouped
in table manner which dumping in debgufs.

Debugfs file location:
    <debugfs_mnt>/ieee80211/phy#/ath9k/samples

Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 47 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath9k/debug.h b/drivers/net/wireless/ath/ath9k/debug.h
index 4a04510e1111..95f85bdc8db7 100644
--- a/drivers/net/wireless/ath/ath9k/debug.h
+++ b/drivers/net/wireless/ath/ath9k/debug.h
@@ -177,14 +177,57 @@ struct ath_stats {
         struct ath_rx_stats rxstats;
 };
 
+#define ATH_DBG_MAX_SAMPLES     10
+struct ath_dbg_bb_mac_samp {
+        u32 dma_dbg_reg_vals[ATH9K_NUM_DMA_DEBUG_REGS];
+        u32 pcu_obs, pcu_cr, noise;
+        struct {
+                u64 jiffies;
+                int8_t rssi_ctl0;
+                int8_t rssi_ctl1;
+                int8_t rssi_ctl2;
+                int8_t rssi_ext0;
+                int8_t rssi_ext1;
+                int8_t rssi_ext2;
+                int8_t rssi;
+                bool isok;
+                u8 rts_fail_cnt;
+                u8 data_fail_cnt;
+                u8 rateindex;
+                u8 qid;
+                u8 tid;
+        } ts[ATH_DBG_MAX_SAMPLES];
+        struct {
+                u64 jiffies;
+                int8_t rssi_ctl0;
+                int8_t rssi_ctl1;
+                int8_t rssi_ctl2;
+                int8_t rssi_ext0;
+                int8_t rssi_ext1;
+                int8_t rssi_ext2;
+                int8_t rssi;
+                bool is_mybeacon;
+                u8 antenna;
+                u8 rate;
+        } rs[ATH_DBG_MAX_SAMPLES];
+        struct ath_cycle_counters cc;
+        struct ath9k_nfcal_hist nfCalHist[NUM_NF_READINGS];
+};
+
 struct ath9k_debug {
         struct dentry *debugfs_phy;
         u32 regidx;
         struct ath_stats stats;
+        spinlock_t samp_lock;
+        struct ath_dbg_bb_mac_samp bb_mac_samp[ATH_DBG_MAX_SAMPLES];
+        u8 sampidx;
+        u8 tsidx;
+        u8 rsidx;
 };
 
 int ath9k_init_debug(struct ath_hw *ah);
 
+void ath9k_debug_samp_bb_mac(struct ath_softc *sc);
 void ath_debug_stat_interrupt(struct ath_softc *sc, enum ath9k_int status);
 void ath_debug_stat_tx(struct ath_softc *sc, struct ath_buf *bf,
                        struct ath_tx_status *ts, struct ath_txq *txq);
@@ -197,6 +240,10 @@ static inline int ath9k_init_debug(struct ath_hw *ah)
         return 0;
 }
 
+static inline void ath9k_debug_samp_bb_mac(struct ath_softc *sc)
+{
+}
+
 static inline void ath_debug_stat_interrupt(struct ath_softc *sc,
                                             enum ath9k_int status)
 {