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Release 4.12 include/linux/hpet.h

Directory: include/linux
#ifndef	__HPET__

#define	__HPET__ 1

#include <uapi/linux/hpet.h>


/*
 * Offsets into HPET Registers
 */


struct hpet {
	
u64 hpet_cap;		/* capabilities */
	
u64 res0;		/* reserved */
	
u64 hpet_config;	/* configuration */
	
u64 res1;		/* reserved */
	
u64 hpet_isr;		/* interrupt status reg */
	
u64 res2[25];		/* reserved */
	union {			/* main counter */
		
u64 _hpet_mc64;
		
u32 _hpet_mc32;
		
unsigned long _hpet_mc;
	
} _u0;
	
u64 res3;		/* reserved */
	
struct hpet_timer {
		
u64 hpet_config;	/* configuration/cap */
		union {		/* timer compare register */
			
u64 _hpet_hc64;
			
u32 _hpet_hc32;
			
unsigned long _hpet_compare;
		
} _u1;
		
u64 hpet_fsb[2];	/* FSB route */
	
} hpet_timers[1];
};


#define	hpet_mc		_u0._hpet_mc

#define	hpet_compare	_u1._hpet_compare


#define	HPET_MAX_TIMERS	(32)

#define	HPET_MAX_IRQ	(32)

/*
 * HPET general capabilities register
 */


#define	HPET_COUNTER_CLK_PERIOD_MASK	(0xffffffff00000000ULL)

#define	HPET_COUNTER_CLK_PERIOD_SHIFT	(32UL)

#define	HPET_VENDOR_ID_MASK		(0x00000000ffff0000ULL)

#define	HPET_VENDOR_ID_SHIFT		(16ULL)

#define	HPET_LEG_RT_CAP_MASK		(0x8000)

#define	HPET_COUNTER_SIZE_MASK		(0x2000)

#define	HPET_NUM_TIM_CAP_MASK		(0x1f00)

#define	HPET_NUM_TIM_CAP_SHIFT		(8ULL)

/*
 * HPET general configuration register
 */


#define	HPET_LEG_RT_CNF_MASK		(2UL)

#define	HPET_ENABLE_CNF_MASK		(1UL)


/*
 * Timer configuration register
 */


#define	Tn_INT_ROUTE_CAP_MASK		(0xffffffff00000000ULL)

#define	Tn_INT_ROUTE_CAP_SHIFT		(32UL)

#define	Tn_FSB_INT_DELCAP_MASK		(0x8000UL)

#define	Tn_FSB_INT_DELCAP_SHIFT		(15)

#define	Tn_FSB_EN_CNF_MASK		(0x4000UL)

#define	Tn_FSB_EN_CNF_SHIFT		(14)

#define	Tn_INT_ROUTE_CNF_MASK		(0x3e00UL)

#define	Tn_INT_ROUTE_CNF_SHIFT		(9)

#define	Tn_32MODE_CNF_MASK		(0x0100UL)

#define	Tn_VAL_SET_CNF_MASK		(0x0040UL)

#define	Tn_SIZE_CAP_MASK		(0x0020UL)

#define	Tn_PER_INT_CAP_MASK		(0x0010UL)

#define	Tn_TYPE_CNF_MASK		(0x0008UL)

#define	Tn_INT_ENB_CNF_MASK		(0x0004UL)

#define	Tn_INT_TYPE_CNF_MASK		(0x0002UL)

/*
 * Timer FSB Interrupt Route Register
 */


#define	Tn_FSB_INT_ADDR_MASK		(0xffffffff00000000ULL)

#define	Tn_FSB_INT_ADDR_SHIFT		(32UL)

#define	Tn_FSB_INT_VAL_MASK		(0x00000000ffffffffULL)

/*
 * exported interfaces
 */


struct hpet_data {
	
unsigned long hd_phys_address;
	
void __iomem *hd_address;
	
unsigned short hd_nirqs;
	
unsigned int hd_state;	/* timer allocated */
	
unsigned int hd_irq[HPET_MAX_TIMERS];
};


static inline void hpet_reserve_timer(struct hpet_data *hd, int timer) { hd->hd_state |= (1 << timer); return; }

Contributors

PersonTokensPropCommitsCommitProp
Robert Picco26100.00%1100.00%
Total26100.00%1100.00%

int hpet_alloc(struct hpet_data *); #endif /* !__HPET__ */

Overall Contributors

PersonTokensPropCommitsCommitProp
Robert Picco28494.98%233.33%
Linus Torvalds51.67%116.67%
Kevin Hao51.67%116.67%
Björn Helgaas41.34%116.67%
David Howells10.33%116.67%
Total299100.00%6100.00%
Directory: include/linux
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