| #ifndef ASM_X86__HPET_H |
| #define ASM_X86__HPET_H |
| |
| #ifdef CONFIG_HPET_TIMER |
| |
| #define HPET_MMAP_SIZE 1024 |
| |
| #define HPET_ID 0x000 |
| #define HPET_PERIOD 0x004 |
| #define HPET_CFG 0x010 |
| #define HPET_STATUS 0x020 |
| #define HPET_COUNTER 0x0f0 |
| #define HPET_T0_CFG 0x100 |
| #define HPET_T0_CMP 0x108 |
| #define HPET_T0_ROUTE 0x110 |
| #define HPET_T1_CFG 0x120 |
| #define HPET_T1_CMP 0x128 |
| #define HPET_T1_ROUTE 0x130 |
| #define HPET_T2_CFG 0x140 |
| #define HPET_T2_CMP 0x148 |
| #define HPET_T2_ROUTE 0x150 |
| |
| #define HPET_ID_REV 0x000000ff |
| #define HPET_ID_NUMBER 0x00001f00 |
| #define HPET_ID_64BIT 0x00002000 |
| #define HPET_ID_LEGSUP 0x00008000 |
| #define HPET_ID_VENDOR 0xffff0000 |
| #define HPET_ID_NUMBER_SHIFT 8 |
| #define HPET_ID_VENDOR_SHIFT 16 |
| |
| #define HPET_ID_VENDOR_8086 0x8086 |
| |
| #define HPET_CFG_ENABLE 0x001 |
| #define HPET_CFG_LEGACY 0x002 |
| #define HPET_LEGACY_8254 2 |
| #define HPET_LEGACY_RTC 8 |
| |
| #define HPET_TN_LEVEL 0x0002 |
| #define HPET_TN_ENABLE 0x0004 |
| #define HPET_TN_PERIODIC 0x0008 |
| #define HPET_TN_PERIODIC_CAP 0x0010 |
| #define HPET_TN_64BIT_CAP 0x0020 |
| #define HPET_TN_SETVAL 0x0040 |
| #define HPET_TN_32BIT 0x0100 |
| #define HPET_TN_ROUTE 0x3e00 |
| #define HPET_TN_FSB 0x4000 |
| #define HPET_TN_FSB_CAP 0x8000 |
| #define HPET_TN_ROUTE_SHIFT 9 |
| |
| /* Max HPET Period is 10^8 femto sec as in HPET spec */ |
| #define HPET_MAX_PERIOD 100000000UL |
| /* |
| * Min HPET period is 10^5 femto sec just for safety. If it is less than this, |
| * then 32 bit HPET counter wrapsaround in less than 0.5 sec. |
| */ |
| #define HPET_MIN_PERIOD 100000UL |
| |
| /* hpet memory map physical address */ |
| extern unsigned long hpet_address; |
| extern unsigned long force_hpet_address; |
| extern int hpet_force_user; |
| extern int is_hpet_enabled(void); |
| extern int hpet_enable(void); |
| extern void hpet_disable(void); |
| extern unsigned long hpet_readl(unsigned long a); |
| extern void force_hpet_resume(void); |
| |
| #ifdef CONFIG_HPET_EMULATE_RTC |
| |
| #include <linux/interrupt.h> |
| |
| typedef irqreturn_t (*rtc_irq_handler)(int interrupt, void *cookie); |
| extern int hpet_mask_rtc_irq_bit(unsigned long bit_mask); |
| extern int hpet_set_rtc_irq_bit(unsigned long bit_mask); |
| extern int hpet_set_alarm_time(unsigned char hrs, unsigned char min, |
| unsigned char sec); |
| extern int hpet_set_periodic_freq(unsigned long freq); |
| extern int hpet_rtc_dropped_irq(void); |
| extern int hpet_rtc_timer_init(void); |
| extern irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id); |
| extern int hpet_register_irq_handler(rtc_irq_handler handler); |
| extern void hpet_unregister_irq_handler(rtc_irq_handler handler); |
| |
| #endif /* CONFIG_HPET_EMULATE_RTC */ |
| |
| #else /* CONFIG_HPET_TIMER */ |
| |
| static inline int hpet_enable(void) { return 0; } |
| static inline int is_hpet_enabled(void) { return 0; } |
| #define hpet_readl(a) 0 |
| |
| #endif |
| #endif /* ASM_X86__HPET_H */ |