ath5k: add capability flag for phyerror counters

Chipsets since revision AR5213A (0x59) have hardware counters for PHY errors
which we can read directly from the registers. Older hardware has to use the RX
descriptor status to get a count of PHY errors. This will be used in several
places in the ANI implementation, so a flag is useful.

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

diff --git a/drivers/net/wireless/ath/ath5k/ath5k.h b/drivers/net/wireless/ath/ath5k/ath5k.h
index ec626905655bcda35d2d668408382fabc7fc34f7..f578c1ed7f881e5ba64aaf08fb2ceebda0b57c99 100644 (file)
--- a/drivers/net/wireless/ath/ath5k/ath5k.h
+++ b/drivers/net/wireless/ath/ath5k/ath5k.h
@@ -982,6 +982,8 @@ struct ath5k_capabilities {
        struct {
                u8      q_tx_num;
        } cap_queues;
+
+       bool cap_has_phyerr_counters;
 };
 
 /* size of noise floor history (keep it a power of two) */

diff --git a/drivers/net/wireless/ath/ath5k/caps.c b/drivers/net/wireless/ath/ath5k/caps.c
index e618e71b1ce6223150185e720c2cd7e503d83e7f..74f007126f4100ce549e28b1569a43b5463eb42a 100644 (file)
--- a/drivers/net/wireless/ath/ath5k/caps.c
+++ b/drivers/net/wireless/ath/ath5k/caps.c
@@ -109,6 +109,12 @@ int ath5k_hw_set_capabilities(struct ath5k_hw *ah)
        else
                ah->ah_capabilities.cap_queues.q_tx_num = AR5K_NUM_TX_QUEUES;
 
+       /* newer hardware has PHY error counters */
+       if (ah->ah_mac_srev >= AR5K_SREV_AR5213A)
+               ah->ah_capabilities.cap_has_phyerr_counters = true;
+       else
+               ah->ah_capabilities.cap_has_phyerr_counters = false;
+
        return 0;
 }