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ath9k_hw: Add function to configure tx status ring buffer

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Also reset tx status ring suring chip reset.

Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Vasanthakumar Thiagarajan 2010-04-15 17:39:27 -04:00 committed by John W. Linville
parent cc610ac055
commit 744d402580
5 changed files with 59 additions and 1 deletions
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30
drivers/net/wireless/ath/ath9k/ar9003_mac.c
View File

@ -347,3 +347,33 @@ int ath9k_hw_process_rxdesc_edma(struct ath_hw *ah, struct ath_rx_status *rxs,
return 0;
}
EXPORT_SYMBOL(ath9k_hw_process_rxdesc_edma);
void ath9k_hw_reset_txstatus_ring(struct ath_hw *ah)
{
ah->ts_tail = 0;
memset((void *) ah->ts_ring, 0,
ah->ts_size * sizeof(struct ar9003_txs));
ath_print(ath9k_hw_common(ah), ATH_DBG_XMIT,
"TS Start 0x%x End 0x%x Virt %p, Size %d\n",
ah->ts_paddr_start, ah->ts_paddr_end,
ah->ts_ring, ah->ts_size);
REG_WRITE(ah, AR_Q_STATUS_RING_START, ah->ts_paddr_start);
REG_WRITE(ah, AR_Q_STATUS_RING_END, ah->ts_paddr_end);
}
void ath9k_hw_setup_statusring(struct ath_hw *ah, void *ts_start,
u32 ts_paddr_start,
u8 size)
{
ah->ts_paddr_start = ts_paddr_start;
ah->ts_paddr_end = ts_paddr_start + (size * sizeof(struct ar9003_txs));
ah->ts_size = size;
ah->ts_ring = (struct ar9003_txs *) ts_start;
ath9k_hw_reset_txstatus_ring(ah);
}
EXPORT_SYMBOL(ath9k_hw_setup_statusring);

17
drivers/net/wireless/ath/ath9k/ar9003_mac.h
View File

@ -73,6 +73,18 @@ struct ar9003_txc {
u32 pad[9]; /* pad to cache line (128 bytes/32 dwords) */
} __packed;
struct ar9003_txs {
u32 ds_info;
u32 status1;
u32 status2;
u32 status3;
u32 status4;
u32 status5;
u32 status6;
u32 status7;
u32 status8;
} __packed;
void ar9003_hw_attach_mac_ops(struct ath_hw *hw);
void ath9k_hw_set_rx_bufsize(struct ath_hw *ah, u16 buf_size);
void ath9k_hw_addrxbuf_edma(struct ath_hw *ah, u32 rxdp,
@ -81,5 +93,8 @@ void ath9k_hw_addrxbuf_edma(struct ath_hw *ah, u32 rxdp,
int ath9k_hw_process_rxdesc_edma(struct ath_hw *ah,
struct ath_rx_status *rxs,
void *buf_addr);
void ath9k_hw_reset_txstatus_ring(struct ath_hw *ah);
void ath9k_hw_setup_statusring(struct ath_hw *ah, void *ts_start,
u32 ts_paddr_start,
u8 size);
#endif

3
drivers/net/wireless/ath/ath9k/hw.c
View File

@ -895,6 +895,9 @@ static inline void ath9k_hw_set_dma(struct ath_hw *ah)
REG_WRITE(ah, AR_PCU_TXBUF_CTRL,
AR_PCU_TXBUF_CTRL_USABLE_SIZE);
}
if (AR_SREV_9300_20_OR_LATER(ah))
ath9k_hw_reset_txstatus_ring(ah);
}
static void ath9k_hw_set_operating_mode(struct ath_hw *ah, int opmode)

7
drivers/net/wireless/ath/ath9k/hw.h
View File

@ -761,6 +761,13 @@ struct ath_hw {
u32 intr_gen_timer_trigger;
u32 intr_gen_timer_thresh;
struct ath_gen_timer_table hw_gen_timers;
struct ar9003_txs *ts_ring;
void *ts_start;
u32 ts_paddr_start;
u32 ts_paddr_end;
u16 ts_tail;
u8 ts_size;
};
static inline struct ath_common *ath9k_hw_common(struct ath_hw *ah)

3
drivers/net/wireless/ath/ath9k/reg.h
View File

@ -383,6 +383,9 @@
#define AR_Q9_TXDP 0x0824
#define AR_QTXDP(_i) (AR_Q0_TXDP + ((_i)<<2))
#define AR_Q_STATUS_RING_START 0x830
#define AR_Q_STATUS_RING_END 0x834
#define AR_Q_TXE 0x0840
#define AR_Q_TXE_M 0x000003FF