Commit f650470a authored by Bob Copeland's avatar Bob Copeland Committed by John W. Linville

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: default avatarBob Copeland <me@bobcopeland.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 67143490
......@@ -1052,6 +1052,7 @@ struct ath5k_hw {
bool ah_calibration;
bool ah_running;
bool ah_single_chip;
bool ah_combined_mic;
enum ath5k_rfgain ah_rf_gain;
u32 ah_mac_srev;
......
......@@ -317,6 +317,12 @@ struct ath5k_hw *ath5k_hw_attach(struct ath5k_softc *sc, u8 mac_version)
goto err_free;
}
if (srev >= AR5K_SREV_AR2414) {
ah->ah_combined_mic = true;
AR5K_REG_ENABLE_BITS(ah, AR5K_MISC_MODE,
AR5K_MISC_MODE_COMBINED_MIC);
}
/* MAC address is cleared until add_interface */
ath5k_hw_set_lladdr(ah, mac);
......
......@@ -1096,20 +1096,20 @@ int ath5k_hw_set_key(struct ath5k_hw *ah, u16 entry,
/* Install rx/tx MIC */
rxmic = (__le32 *) &key->key[16];
txmic = (__le32 *) &key->key[24];
#if 0
/* MISC_MODE register & 0x04 - for mac srev >= griffin */
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
} else {
key_v[0] = rxmic[0];
key_v[1] = 0;
key_v[2] = rxmic[1];
key_v[3] = 0;
key_v[4] = 0;
#endif
}
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));
......
......@@ -1729,6 +1729,7 @@
#define AR5K_MISC_MODE 0x8120 /* Register Address */
#define AR5K_MISC_MODE_FBSSID_MATCH 0x00000001 /* Force BSSID match */
#define AR5K_MISC_MODE_ACKSIFS_MEM 0x00000002 /* ACK SIFS memory (?) */
#define AR5K_MISC_MODE_COMBINED_MIC 0x00000004 /* use rx/tx MIC key */
/* more bits */
/*
......
Markdown is supported
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment