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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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C
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112/* SPDX-License-Identifier: GPL-2.0 */#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[];};
#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;}
int hpet_alloc(struct hpet_data *);
#endif /* !__HPET__ */