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ath9k: Add infrastructure for generic hw timers

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Signed-off-by: Vasanthakumar Thiagarajan <vasanth@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Vasanthakumar Thiagarajan
2009-08-26 21:08:49 +05:30
committed by John W. Linville
parent 81fa16fbe0
commit ff155a45ce
4 changed files with 278 additions and 2 deletions
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52
drivers/net/wireless/ath/ath9k/hw.h
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@@ -237,6 +237,7 @@ enum ath9k_int {
ATH9K_INT_GPIO = 0x01000000,
ATH9K_INT_CABEND = 0x02000000,
ATH9K_INT_TSFOOR = 0x04000000,
ATH9K_INT_GENTIMER = 0x08000000,
ATH9K_INT_CST = 0x10000000,
ATH9K_INT_GTT = 0x20000000,
ATH9K_INT_FATAL = 0x40000000,
@@ -390,6 +391,41 @@ struct ath9k_hw_version {
u16 analog2GhzRev;
};
/* Generic TSF timer definitions */
#define ATH_MAX_GEN_TIMER 16
#define AR_GENTMR_BIT(_index) (1 << (_index))
/*
* Using de Bruijin sequence to to look up 1's index in a 32 bit number
* debruijn32 = 0000 0111 0111 1100 1011 0101 0011 0001
*/
#define debruijn32 0x077CB531UL
struct ath_gen_timer_configuration {
u32 next_addr;
u32 period_addr;
u32 mode_addr;
u32 mode_mask;
};
struct ath_gen_timer {
void (*trigger)(void *arg);
void (*overflow)(void *arg);
void *arg;
u8 index;
};
struct ath_gen_timer_table {
u32 gen_timer_index[32];
struct ath_gen_timer *timers[ATH_MAX_GEN_TIMER];
union {
unsigned long timer_bits;
u16 val;
} timer_mask;
};
struct ath_hw {
struct ath_softc *ah_sc;
struct ath9k_hw_version hw_version;
@@ -536,6 +572,10 @@ struct ath_hw {
struct ar5416IniArray iniModesAdditional;
struct ar5416IniArray iniModesRxGain;
struct ar5416IniArray iniModesTxGain;
u32 intr_gen_timer_trigger;
u32 intr_gen_timer_thresh;
struct ath_gen_timer_table hw_gen_timers;
};
/* Initialization, Detach, Reset */
@@ -611,4 +651,16 @@ bool ath9k_hw_intrpend(struct ath_hw *ah);
bool ath9k_hw_getisr(struct ath_hw *ah, enum ath9k_int *masked);
enum ath9k_int ath9k_hw_set_interrupts(struct ath_hw *ah, enum ath9k_int ints);
/* Generic hw timer primitives */
struct ath_gen_timer *ath_gen_timer_alloc(struct ath_hw *ah,
void (*trigger)(void *),
void (*overflow)(void *),
void *arg,
u8 timer_index);
void ath_gen_timer_start(struct ath_hw *ah, struct ath_gen_timer *timer,
u32 timer_next, u32 timer_period);
void ath_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer);
void ath_gen_timer_free(struct ath_hw *ah, struct ath_gen_timer *timer);
void ath_gen_timer_isr(struct ath_hw *hw);
#endif