61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
#ifndef _ASM_X8664_HPET_H
|
|
#define _ASM_X8664_HPET_H 1
|
|
|
|
/*
|
|
* Documentation on HPET can be found at:
|
|
* http://www.intel.com/ial/home/sp/pcmmspec.htm
|
|
* ftp://download.intel.com/ial/home/sp/mmts098.pdf
|
|
*/
|
|
|
|
#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_VENDOR 0xffff0000
|
|
#define HPET_ID_LEGSUP 0x00008000
|
|
#define HPET_ID_NUMBER 0x00001f00
|
|
#define HPET_ID_REV 0x000000ff
|
|
#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_ENABLE 0x004
|
|
#define HPET_TN_PERIODIC 0x008
|
|
#define HPET_TN_PERIODIC_CAP 0x010
|
|
#define HPET_TN_SETVAL 0x040
|
|
#define HPET_TN_32BIT 0x100
|
|
|
|
extern int is_hpet_enabled(void);
|
|
extern int hpet_rtc_timer_init(void);
|
|
extern int oem_force_hpet_timer(void);
|
|
|
|
#ifdef CONFIG_HPET_EMULATE_RTC
|
|
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);
|
|
#endif /* CONFIG_HPET_EMULATE_RTC */
|
|
|
|
#endif
|