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authorGabor Juhos <juhosg@openwrt.org>2009-04-29 07:01:58 -0400
committerJohn W. Linville <linville@tuxdriver.com>2009-05-06 15:14:52 -0400
commitfb4a3d35a26aa8ef5049f10666e6a163b4c32855 (patch)
tree6222a7edae518828d92584e63a904de1c2dfe922
parent5cff20e6c5a6591a79d3b027af222870f52bb550 (diff)
ath9k: uninline ath9k_io{read,write}32 routines
The spin_lock handling uses lots of instructions on some archs. With this patch the size of the ath9k module will be significantly smaller. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Acked-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--drivers/net/wireless/ath/ath9k/ath9k.h33
-rw-r--r--drivers/net/wireless/ath/ath9k/hw.c32
2 files changed, 34 insertions, 31 deletions
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index d5084ddf44ff..90b6314a8169 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -697,36 +697,7 @@ void ath9k_wiphy_pause_all_forced(struct ath_softc *sc,
697bool ath9k_wiphy_scanning(struct ath_softc *sc); 697bool ath9k_wiphy_scanning(struct ath_softc *sc);
698void ath9k_wiphy_work(struct work_struct *work); 698void ath9k_wiphy_work(struct work_struct *work);
699 699
700/* 700void ath9k_iowrite32(struct ath_hw *ah, u32 reg_offset, u32 val);
701 * Read and write, they both share the same lock. We do this to serialize 701unsigned int ath9k_ioread32(struct ath_hw *ah, u32 reg_offset);
702 * reads and writes on Atheros 802.11n PCI devices only. This is required
703 * as the FIFO on these devices can only accept sanely 2 requests. After
704 * that the device goes bananas. Serializing the reads/writes prevents this
705 * from happening.
706 */
707
708static inline void ath9k_iowrite32(struct ath_hw *ah, u32 reg_offset, u32 val)
709{
710 if (ah->config.serialize_regmode == SER_REG_MODE_ON) {
711 unsigned long flags;
712 spin_lock_irqsave(&ah->ah_sc->sc_serial_rw, flags);
713 iowrite32(val, ah->ah_sc->mem + reg_offset);
714 spin_unlock_irqrestore(&ah->ah_sc->sc_serial_rw, flags);
715 } else
716 iowrite32(val, ah->ah_sc->mem + reg_offset);
717}
718
719static inline unsigned int ath9k_ioread32(struct ath_hw *ah, u32 reg_offset)
720{
721 u32 val;
722 if (ah->config.serialize_regmode == SER_REG_MODE_ON) {
723 unsigned long flags;
724 spin_lock_irqsave(&ah->ah_sc->sc_serial_rw, flags);
725 val = ioread32(ah->ah_sc->mem + reg_offset);
726 spin_unlock_irqrestore(&ah->ah_sc->sc_serial_rw, flags);
727 } else
728 val = ioread32(ah->ah_sc->mem + reg_offset);
729 return val;
730}
731 702
732#endif /* ATH9K_H */ 703#endif /* ATH9K_H */
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index ec2a7a40b00d..02f40154e831 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -84,6 +84,38 @@ static u32 ath9k_hw_mac_to_clks(struct ath_hw *ah, u32 usecs)
84 return ath9k_hw_mac_clks(ah, usecs); 84 return ath9k_hw_mac_clks(ah, usecs);
85} 85}
86 86
87/*
88 * Read and write, they both share the same lock. We do this to serialize
89 * reads and writes on Atheros 802.11n PCI devices only. This is required
90 * as the FIFO on these devices can only accept sanely 2 requests. After
91 * that the device goes bananas. Serializing the reads/writes prevents this
92 * from happening.
93 */
94
95void ath9k_iowrite32(struct ath_hw *ah, u32 reg_offset, u32 val)
96{
97 if (ah->config.serialize_regmode == SER_REG_MODE_ON) {
98 unsigned long flags;
99 spin_lock_irqsave(&ah->ah_sc->sc_serial_rw, flags);
100 iowrite32(val, ah->ah_sc->mem + reg_offset);
101 spin_unlock_irqrestore(&ah->ah_sc->sc_serial_rw, flags);
102 } else
103 iowrite32(val, ah->ah_sc->mem + reg_offset);
104}
105
106unsigned int ath9k_ioread32(struct ath_hw *ah, u32 reg_offset)
107{
108 u32 val;
109 if (ah->config.serialize_regmode == SER_REG_MODE_ON) {
110 unsigned long flags;
111 spin_lock_irqsave(&ah->ah_sc->sc_serial_rw, flags);
112 val = ioread32(ah->ah_sc->mem + reg_offset);
113 spin_unlock_irqrestore(&ah->ah_sc->sc_serial_rw, flags);
114 } else
115 val = ioread32(ah->ah_sc->mem + reg_offset);
116 return val;
117}
118
87bool ath9k_hw_wait(struct ath_hw *ah, u32 reg, u32 mask, u32 val, u32 timeout) 119bool ath9k_hw_wait(struct ath_hw *ah, u32 reg, u32 mask, u32 val, u32 timeout)
88{ 120{
89 int i; 121 int i;