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ath9k_hw: Use helper functions to simplify HW reset
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Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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Sujith Manoharan authored and John W. Linville committed Mar 6, 2013
1 parent fcb9a3d commit 15d2b58
Showing 1 changed file with 103 additions and 79 deletions.
182 changes: 103 additions & 79 deletions drivers/net/wireless/ath/ath9k/hw.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1667,6 +1667,104 @@ bool ath9k_hw_check_alive(struct ath_hw *ah)
}
EXPORT_SYMBOL(ath9k_hw_check_alive);

static void ath9k_hw_init_mfp(struct ath_hw *ah)
{
/* Setup MFP options for CCMP */
if (AR_SREV_9280_20_OR_LATER(ah)) {
/* Mask Retry(b11), PwrMgt(b12), MoreData(b13) to 0 in mgmt
* frames when constructing CCMP AAD. */
REG_RMW_FIELD(ah, AR_AES_MUTE_MASK1, AR_AES_MUTE_MASK1_FC_MGMT,
0xc7ff);
ah->sw_mgmt_crypto = false;
} else if (AR_SREV_9160_10_OR_LATER(ah)) {
/* Disable hardware crypto for management frames */
REG_CLR_BIT(ah, AR_PCU_MISC_MODE2,
AR_PCU_MISC_MODE2_MGMT_CRYPTO_ENABLE);
REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
AR_PCU_MISC_MODE2_NO_CRYPTO_FOR_NON_DATA_PKT);
ah->sw_mgmt_crypto = true;
} else {
ah->sw_mgmt_crypto = true;
}
}

static void ath9k_hw_reset_opmode(struct ath_hw *ah,
u32 macStaId1, u32 saveDefAntenna)
{
struct ath_common *common = ath9k_hw_common(ah);

ENABLE_REGWRITE_BUFFER(ah);

REG_WRITE(ah, AR_STA_ID0, get_unaligned_le32(common->macaddr));
REG_WRITE(ah, AR_STA_ID1, get_unaligned_le16(common->macaddr + 4)
| macStaId1
| AR_STA_ID1_RTS_USE_DEF
| (ah->config.ack_6mb ? AR_STA_ID1_ACKCTS_6MB : 0)
| ah->sta_id1_defaults);
ath_hw_setbssidmask(common);
REG_WRITE(ah, AR_DEF_ANTENNA, saveDefAntenna);
ath9k_hw_write_associd(ah);
REG_WRITE(ah, AR_ISR, ~0);
REG_WRITE(ah, AR_RSSI_THR, INIT_RSSI_THR);

REGWRITE_BUFFER_FLUSH(ah);

ath9k_hw_set_operating_mode(ah, ah->opmode);
}

static void ath9k_hw_init_queues(struct ath_hw *ah)
{
int i;

ENABLE_REGWRITE_BUFFER(ah);

for (i = 0; i < AR_NUM_DCU; i++)
REG_WRITE(ah, AR_DQCUMASK(i), 1 << i);

REGWRITE_BUFFER_FLUSH(ah);

ah->intr_txqs = 0;
for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
ath9k_hw_resettxqueue(ah, i);
}

/*
* For big endian systems turn on swapping for descriptors
*/
static void ath9k_hw_init_desc(struct ath_hw *ah)
{
struct ath_common *common = ath9k_hw_common(ah);

if (AR_SREV_9100(ah)) {
u32 mask;
mask = REG_READ(ah, AR_CFG);
if (mask & (AR_CFG_SWRB | AR_CFG_SWTB | AR_CFG_SWRG)) {
ath_dbg(common, RESET, "CFG Byte Swap Set 0x%x\n",
mask);
} else {
mask = INIT_CONFIG_STATUS | AR_CFG_SWRB | AR_CFG_SWTB;
REG_WRITE(ah, AR_CFG, mask);
ath_dbg(common, RESET, "Setting CFG 0x%x\n",
REG_READ(ah, AR_CFG));
}
} else {
if (common->bus_ops->ath_bus_type == ATH_USB) {
/* Configure AR9271 target WLAN */
if (AR_SREV_9271(ah))
REG_WRITE(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB);
else
REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
}
#ifdef __BIG_ENDIAN
else if (AR_SREV_9330(ah) || AR_SREV_9340(ah) ||
AR_SREV_9550(ah))
REG_RMW(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB, 0);
else
REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
#endif
}
}

/*
* Fast channel change:
* (Change synthesizer based on channel freq without resetting chip)
Expand Down Expand Up @@ -1744,7 +1842,7 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
u32 saveDefAntenna;
u32 macStaId1;
u64 tsf = 0;
int i, r;
int r;
bool start_mci_reset = false;
bool save_fullsleep = ah->chip_fullsleep;

Expand Down Expand Up @@ -1849,65 +1947,23 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
ath9k_hw_settsf64(ah, tsf);
}

/* Setup MFP options for CCMP */
if (AR_SREV_9280_20_OR_LATER(ah)) {
/* Mask Retry(b11), PwrMgt(b12), MoreData(b13) to 0 in mgmt
* frames when constructing CCMP AAD. */
REG_RMW_FIELD(ah, AR_AES_MUTE_MASK1, AR_AES_MUTE_MASK1_FC_MGMT,
0xc7ff);
ah->sw_mgmt_crypto = false;
} else if (AR_SREV_9160_10_OR_LATER(ah)) {
/* Disable hardware crypto for management frames */
REG_CLR_BIT(ah, AR_PCU_MISC_MODE2,
AR_PCU_MISC_MODE2_MGMT_CRYPTO_ENABLE);
REG_SET_BIT(ah, AR_PCU_MISC_MODE2,
AR_PCU_MISC_MODE2_NO_CRYPTO_FOR_NON_DATA_PKT);
ah->sw_mgmt_crypto = true;
} else
ah->sw_mgmt_crypto = true;
ath9k_hw_init_mfp(ah);

if (IS_CHAN_OFDM(chan) || IS_CHAN_HT(chan))
ath9k_hw_set_delta_slope(ah, chan);

ath9k_hw_spur_mitigate_freq(ah, chan);
ah->eep_ops->set_board_values(ah, chan);

ENABLE_REGWRITE_BUFFER(ah);

REG_WRITE(ah, AR_STA_ID0, get_unaligned_le32(common->macaddr));
REG_WRITE(ah, AR_STA_ID1, get_unaligned_le16(common->macaddr + 4)
| macStaId1
| AR_STA_ID1_RTS_USE_DEF
| (ah->config.
ack_6mb ? AR_STA_ID1_ACKCTS_6MB : 0)
| ah->sta_id1_defaults);
ath_hw_setbssidmask(common);
REG_WRITE(ah, AR_DEF_ANTENNA, saveDefAntenna);
ath9k_hw_write_associd(ah);
REG_WRITE(ah, AR_ISR, ~0);
REG_WRITE(ah, AR_RSSI_THR, INIT_RSSI_THR);

REGWRITE_BUFFER_FLUSH(ah);

ath9k_hw_set_operating_mode(ah, ah->opmode);
ath9k_hw_reset_opmode(ah, macStaId1, saveDefAntenna);

r = ath9k_hw_rf_set_freq(ah, chan);
if (r)
return r;

ath9k_hw_set_clockrate(ah);

ENABLE_REGWRITE_BUFFER(ah);

for (i = 0; i < AR_NUM_DCU; i++)
REG_WRITE(ah, AR_DQCUMASK(i), 1 << i);

REGWRITE_BUFFER_FLUSH(ah);

ah->intr_txqs = 0;
for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
ath9k_hw_resettxqueue(ah, i);

ath9k_hw_init_queues(ah);
ath9k_hw_init_interrupt_masks(ah, ah->opmode);
ath9k_hw_ani_cache_ini_regs(ah);
ath9k_hw_init_qos(ah);
Expand Down Expand Up @@ -1962,38 +2018,7 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,

REGWRITE_BUFFER_FLUSH(ah);

/*
* For big endian systems turn on swapping for descriptors
*/
if (AR_SREV_9100(ah)) {
u32 mask;
mask = REG_READ(ah, AR_CFG);
if (mask & (AR_CFG_SWRB | AR_CFG_SWTB | AR_CFG_SWRG)) {
ath_dbg(common, RESET, "CFG Byte Swap Set 0x%x\n",
mask);
} else {
mask =
INIT_CONFIG_STATUS | AR_CFG_SWRB | AR_CFG_SWTB;
REG_WRITE(ah, AR_CFG, mask);
ath_dbg(common, RESET, "Setting CFG 0x%x\n",
REG_READ(ah, AR_CFG));
}
} else {
if (common->bus_ops->ath_bus_type == ATH_USB) {
/* Configure AR9271 target WLAN */
if (AR_SREV_9271(ah))
REG_WRITE(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB);
else
REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
}
#ifdef __BIG_ENDIAN
else if (AR_SREV_9330(ah) || AR_SREV_9340(ah) ||
AR_SREV_9550(ah))
REG_RMW(ah, AR_CFG, AR_CFG_SWRB | AR_CFG_SWTB, 0);
else
REG_WRITE(ah, AR_CFG, AR_CFG_SWTD | AR_CFG_SWRD);
#endif
}
ath9k_hw_init_desc(ah);

if (ath9k_hw_btcoex_is_enabled(ah))
ath9k_hw_btcoex_enable(ah);
Expand All @@ -2006,7 +2031,6 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,

if (AR_SREV_9300_20_OR_LATER(ah)) {
ar9003_hw_bb_watchdog_config(ah);

ar9003_hw_disable_phy_restart(ah);
}

Expand Down

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