package/mac80211/patches/571-ath9k_reset_debug.patch

   1 --- a/drivers/net/wireless/ath/ath9k/debug.h
   2 +++ b/drivers/net/wireless/ath/ath9k/debug.h
   3 @@ -25,8 +25,10 @@ struct ath_buf;
   4
   5  #ifdef CONFIG_ATH9K_DEBUGFS
   6  #define TX_STAT_INC(q, c) sc->debug.stats.txstats[q].c++
   7 +#define RESET_STAT_INC(sc, type) sc->debug.stats.reset[type]++
   8  #else
   9  #define TX_STAT_INC(q, c) do { } while (0)
  10 +#define RESET_STAT_INC(sc, type) do { } while (0)
  11  #endif
  12
  13  #ifdef CONFIG_ATH9K_DEBUGFS
  14 @@ -171,10 +173,21 @@ struct ath_rx_stats {
  15         u8 rs_antenna;
  16  };
  17
  18 +enum ath_reset_type {
  19 +       RESET_TYPE_BB_HANG,
  20 +       RESET_TYPE_BB_WATCHDOG,
  21 +       RESET_TYPE_FATAL_INT,
  22 +       RESET_TYPE_TX_ERROR,
  23 +       RESET_TYPE_TX_HANG,
  24 +       RESET_TYPE_PLL_HANG,
  25 +       __RESET_TYPE_MAX
  26 +};
  27 +
  28  struct ath_stats {
  29         struct ath_interrupt_stats istats;
  30         struct ath_tx_stats txstats[ATH9K_NUM_TX_QUEUES];
  31         struct ath_rx_stats rxstats;
  32 +       u32 reset[__RESET_TYPE_MAX];
  33  };
  34
  35  #define ATH_DBG_MAX_SAMPLES    10
  36 --- a/drivers/net/wireless/ath/ath9k/main.c
  37 +++ b/drivers/net/wireless/ath/ath9k/main.c
  38 @@ -679,6 +679,16 @@ void ath9k_tasklet(unsigned long data)
  39
  40         if ((status & ATH9K_INT_FATAL) ||
  41             (status & ATH9K_INT_BB_WATCHDOG)) {
  42 +#ifdef CONFIG_ATH9K_DEBUGFS
  43 +               enum ath_reset_type type;
  44 +
  45 +               if (status & ATH9K_INT_FATAL)
  46 +                       type = RESET_TYPE_FATAL_INT;
  47 +               else
  48 +                       type = RESET_TYPE_BB_WATCHDOG;
  49 +
  50 +               RESET_STAT_INC(sc, type);
  51 +#endif
  52                 ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
  53                 goto out;
  54         }
  55 @@ -995,8 +1005,10 @@ void ath_hw_check(struct work_struct *wo
  56         ath_dbg(common, ATH_DBG_RESET, "Possible baseband hang, "
  57                 "busy=%d (try %d)\n", busy, sc->hw_busy_count + 1);
  58         if (busy >= 99) {
  59 -               if (++sc->hw_busy_count >= 3)
  60 +               if (++sc->hw_busy_count >= 3) {
  61 +                       RESET_STAT_INC(sc, RESET_TYPE_BB_HANG);
  62                         ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
  63 +               }
  64
  65         } else if (busy >= 0)
  66                 sc->hw_busy_count = 0;
  67 @@ -1016,6 +1028,7 @@ static void ath_hw_pll_rx_hang_check(str
  68                         /* Rx is hung for more than 500ms. Reset it */
  69                         ath_dbg(common, ATH_DBG_RESET,
  70                                 "Possible RX hang, resetting");
  71 +                       RESET_STAT_INC(sc, RESET_TYPE_PLL_HANG);
  72                         ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
  73                         count = 0;
  74                 }
  75 --- a/drivers/net/wireless/ath/ath9k/xmit.c
  76 +++ b/drivers/net/wireless/ath/ath9k/xmit.c
  77 @@ -587,8 +587,10 @@ static void ath_tx_complete_aggr(struct
  78
  79         rcu_read_unlock();
  80
  81 -       if (needreset)
  82 +       if (needreset) {
  83 +               RESET_STAT_INC(sc, RESET_TYPE_TX_ERROR);
  84                 ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
  85 +       }
  86  }
  87
  88  static bool ath_lookup_legacy(struct ath_buf *bf)
  89 @@ -2270,6 +2272,7 @@ static void ath_tx_complete_poll_work(st
  90         if (needreset) {
  91                 ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_RESET,
  92                         "tx hung, resetting the chip\n");
  93 +               RESET_STAT_INC(sc, RESET_TYPE_TX_HANG);
  94                 ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
  95         }
  96
  97 --- a/drivers/net/wireless/ath/ath9k/debug.c
  98 +++ b/drivers/net/wireless/ath/ath9k/debug.c
  99 @@ -523,9 +523,22 @@ static ssize_t read_file_wiphy(struct fi
 100         if (tmp & ATH9K_RX_FILTER_PHYRADAR)
 101                 len += snprintf(buf + len, sizeof(buf) - len, " PHYRADAR");
 102         if (tmp & ATH9K_RX_FILTER_MCAST_BCAST_ALL)
 103 -               len += snprintf(buf + len, sizeof(buf) - len, " MCAST_BCAST_ALL\n");
 104 -       else
 105 -               len += snprintf(buf + len, sizeof(buf) - len, "\n");
 106 +               len += snprintf(buf + len, sizeof(buf) - len, " MCAST_BCAST_ALL");
 107 +
 108 +       len += snprintf(buf + len, sizeof(buf) - len,
 109 +                      "\n\nReset causes:\n"
 110 +                      "  baseband hang: %d\n"
 111 +                      "  baseband watchdog: %d\n"
 112 +                      "  fatal hardware error interrupt: %d\n"
 113 +                      "  tx hardware error: %d\n"
 114 +                      "  tx path hang: %d\n"
 115 +                      "  pll rx hang: %d\n",
 116 +                      sc->debug.stats.reset[RESET_TYPE_BB_HANG],
 117 +                      sc->debug.stats.reset[RESET_TYPE_BB_WATCHDOG],
 118 +                      sc->debug.stats.reset[RESET_TYPE_FATAL_INT],
 119 +                      sc->debug.stats.reset[RESET_TYPE_TX_ERROR],
 120 +                      sc->debug.stats.reset[RESET_TYPE_TX_HANG],
 121 +                      sc->debug.stats.reset[RESET_TYPE_PLL_HANG]);
 122
 123         if (len > sizeof(buf))
 124                 len = sizeof(buf);