ath5k: enable combined michael mic in key cache
For mac revisions >= "Griffin," the hardware allows the mic tx and rx
authenticator keys to share the same cache line, whereas earlier
hardware can only store the rx. Enable the combined mic on hardware
that supports it.
Changes to ath5k.h
Changes-licensed-under: 3-Clause-BSD
Changes to attach.c, pcu.c, reg.h
Changes-licensed-under: ISC
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ath5k/pcu.c b/drivers/net/wireless/ath5k/pcu.c
index ad7ea36..dabe422 100644
--- a/drivers/net/wireless/ath5k/pcu.c
+++ b/drivers/net/wireless/ath5k/pcu.c
@@ -1096,20 +1096,20 @@
/* Install rx/tx MIC */
rxmic = (__le32 *) &key->key[16];
txmic = (__le32 *) &key->key[24];
-#if 0
- /* MISC_MODE register & 0x04 - for mac srev >= griffin */
- key_v[0] = rxmic[0];
- key_v[1] = (txmic[0] >> 16) & 0xffff;
- key_v[2] = rxmic[1];
- key_v[3] = txmic[0] & 0xffff;
- key_v[4] = txmic[1];
-#else
- key_v[0] = rxmic[0];
- key_v[1] = 0;
- key_v[2] = rxmic[1];
- key_v[3] = 0;
- key_v[4] = 0;
-#endif
+
+ if (ah->ah_combined_mic) {
+ key_v[0] = rxmic[0];
+ key_v[1] = (txmic[0] >> 16) & 0xffff;
+ key_v[2] = rxmic[1];
+ key_v[3] = txmic[0] & 0xffff;
+ key_v[4] = txmic[1];
+ } else {
+ key_v[0] = rxmic[0];
+ key_v[1] = 0;
+ key_v[2] = rxmic[1];
+ key_v[3] = 0;
+ key_v[4] = 0;
+ }
for (i = 0; i < ARRAY_SIZE(key_v); i++)
ath5k_hw_reg_write(ah, le32_to_cpu(key_v[i]),
AR5K_KEYTABLE_OFF(micentry, i));