ath5k: update phy errors codes

Update PHY error codes from the HAL, and keep them in statistics for debugging
via the 'frameerrors' file. This will also be used by ANI.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

4 files changed, 37 insertions, 9 deletions

diff --git a/drivers/net/wireless/ath/ath5k/base.c b/drivers/net/wireless/ath/ath5k/base.c
index ea33b993b28e..a1c0dcb4926e 100644
--- a/drivers/net/wireless/ath/ath5k/base.c
+++ b/drivers/net/wireless/ath/ath5k/base.c
@@ -1940,6 +1940,8 @@ ath5k_tasklet_rx(unsigned long data)
                                 sc->stats.rxerr_fifo++;
                         if (rs.rs_status & AR5K_RXERR_PHY) {
                                 sc->stats.rxerr_phy++;
+                                if (rs.rs_phyerr > 0 && rs.rs_phyerr < 32)
+                                        sc->stats.rxerr_phy_code[rs.rs_phyerr]++;
                                 goto next;
                         }
                         if (rs.rs_status & AR5K_RXERR_DECRYPT) {
diff --git a/drivers/net/wireless/ath/ath5k/base.h b/drivers/net/wireless/ath/ath5k/base.h
index fe5dae517545..a572a4844800 100644
--- a/drivers/net/wireless/ath/ath5k/base.h
+++ b/drivers/net/wireless/ath/ath5k/base.h
@@ -116,6 +116,7 @@ struct ath5k_statistics {
         unsigned int tx_all_count;      /* all TX frames, including errors */
         unsigned int rxerr_crc;
         unsigned int rxerr_phy;
+        unsigned int rxerr_phy_code[32];
         unsigned int rxerr_fifo;
         unsigned int rxerr_decrypt;
         unsigned int rxerr_mic;
diff --git a/drivers/net/wireless/ath/ath5k/debug.c b/drivers/net/wireless/ath/ath5k/debug.c
index bccd4a78027e..90247dc74198 100644
--- a/drivers/net/wireless/ath/ath5k/debug.c
+++ b/drivers/net/wireless/ath/ath5k/debug.c
@@ -474,6 +474,7 @@ static ssize_t read_file_frameerrors(struct file *file, char __user *user_buf,
         struct ath5k_statistics *st = &sc->stats;
         char buf[700];
         unsigned int len = 0;
+        int i;
 
         len += snprintf(buf+len, sizeof(buf)-len,
                         "RX\n---------------------\n");
@@ -485,6 +486,13 @@ static ssize_t read_file_frameerrors(struct file *file, char __user *user_buf,
                         st->rxerr_phy,
                         st->rx_all_count > 0 ?
                                 st->rxerr_phy*100/st->rx_all_count : 0);
+        for (i = 0; i < 32; i++) {
+                if (st->rxerr_phy_code[i])
+                        len += snprintf(buf+len, sizeof(buf)-len,
+                                " phy_err[%d]\t%d\n",
+                                i, st->rxerr_phy_code[i]);
+        }
+
         len += snprintf(buf+len, sizeof(buf)-len, "FIFO\t%d\t(%d%%)\n",
                         st->rxerr_fifo,
                         st->rx_all_count > 0 ?
diff --git a/drivers/net/wireless/ath/ath5k/desc.h b/drivers/net/wireless/ath/ath5k/desc.h
index 56158c804e3e..64538fbe4167 100644
--- a/drivers/net/wireless/ath/ath5k/desc.h
+++ b/drivers/net/wireless/ath/ath5k/desc.h
@@ -112,15 +112,32 @@ struct ath5k_hw_rx_error {
 #define AR5K_RX_DESC_ERROR1_PHY_ERROR_CODE      0x0000ff00
 #define AR5K_RX_DESC_ERROR1_PHY_ERROR_CODE_S    8
 
-/* PHY Error codes */
-#define AR5K_DESC_RX_PHY_ERROR_NONE             0x00
-#define AR5K_DESC_RX_PHY_ERROR_TIMING           0x20
-#define AR5K_DESC_RX_PHY_ERROR_PARITY           0x40
-#define AR5K_DESC_RX_PHY_ERROR_RATE             0x60
-#define AR5K_DESC_RX_PHY_ERROR_LENGTH           0x80
-#define AR5K_DESC_RX_PHY_ERROR_64QAM            0xa0
-#define AR5K_DESC_RX_PHY_ERROR_SERVICE          0xc0
-#define AR5K_DESC_RX_PHY_ERROR_TRANSMITOVR      0xe0
+/**
+ * enum ath5k_phy_error_code - PHY Error codes
+ */
+enum ath5k_phy_error_code {
+        AR5K_RX_PHY_ERROR_UNDERRUN              = 0,    /* Transmit underrun */
+        AR5K_RX_PHY_ERROR_TIMING                = 1,    /* Timing error */
+        AR5K_RX_PHY_ERROR_PARITY                = 2,    /* Illegal parity */
+        AR5K_RX_PHY_ERROR_RATE                  = 3,    /* Illegal rate */
+        AR5K_RX_PHY_ERROR_LENGTH                = 4,    /* Illegal length */
+        AR5K_RX_PHY_ERROR_RADAR                 = 5,    /* Radar detect */
+        AR5K_RX_PHY_ERROR_SERVICE               = 6,    /* Illegal service */
+        AR5K_RX_PHY_ERROR_TOR                   = 7,    /* Transmit override receive */
+        /* these are specific to the 5212 */
+        AR5K_RX_PHY_ERROR_OFDM_TIMING           = 17,
+        AR5K_RX_PHY_ERROR_OFDM_SIGNAL_PARITY    = 18,
+        AR5K_RX_PHY_ERROR_OFDM_RATE_ILLEGAL     = 19,
+        AR5K_RX_PHY_ERROR_OFDM_LENGTH_ILLEGAL   = 20,
+        AR5K_RX_PHY_ERROR_OFDM_POWER_DROP       = 21,
+        AR5K_RX_PHY_ERROR_OFDM_SERVICE          = 22,
+        AR5K_RX_PHY_ERROR_OFDM_RESTART          = 23,
+        AR5K_RX_PHY_ERROR_CCK_TIMING            = 25,
+        AR5K_RX_PHY_ERROR_CCK_HEADER_CRC        = 26,
+        AR5K_RX_PHY_ERROR_CCK_RATE_ILLEGAL      = 27,
+        AR5K_RX_PHY_ERROR_CCK_SERVICE           = 30,
+        AR5K_RX_PHY_ERROR_CCK_RESTART           = 31,
+};
 
 /*
  * 5210/5211 hardware 2-word TX control descriptor