| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef _ASM_X8664_HPET_H |
| 2 | #define _ASM_X8664_HPET_H 1 |
| 3 | |
| 4 | /* |
| 5 | * Documentation on HPET can be found at: |
| 6 | * http://www.intel.com/ial/home/sp/pcmmspec.htm |
| 7 | * ftp://download.intel.com/ial/home/sp/mmts098.pdf |
| 8 | */ |
| 9 | |
| 10 | #define HPET_MMAP_SIZE 1024 |
| 11 | |
| 12 | #define HPET_ID 0x000 |
| 13 | #define HPET_PERIOD 0x004 |
| 14 | #define HPET_CFG 0x010 |
| 15 | #define HPET_STATUS 0x020 |
| 16 | #define HPET_COUNTER 0x0f0 |
| 17 | #define HPET_T0_CFG 0x100 |
| 18 | #define HPET_T0_CMP 0x108 |
| 19 | #define HPET_T0_ROUTE 0x110 |
| 20 | #define HPET_T1_CFG 0x120 |
| 21 | #define HPET_T1_CMP 0x128 |
| 22 | #define HPET_T1_ROUTE 0x130 |
| 23 | #define HPET_T2_CFG 0x140 |
| 24 | #define HPET_T2_CMP 0x148 |
| 25 | #define HPET_T2_ROUTE 0x150 |
| 26 | |
| 27 | #define HPET_ID_VENDOR 0xffff0000 |
| 28 | #define HPET_ID_LEGSUP 0x00008000 |
| 29 | #define HPET_ID_NUMBER 0x00001f00 |
| 30 | #define HPET_ID_REV 0x000000ff |
| 31 | #define HPET_ID_NUMBER_SHIFT 8 |
| 32 | |
| 33 | #define HPET_ID_VENDOR_SHIFT 16 |
| 34 | #define HPET_ID_VENDOR_8086 0x8086 |
| 35 | |
| 36 | #define HPET_CFG_ENABLE 0x001 |
| 37 | #define HPET_CFG_LEGACY 0x002 |
| 38 | #define HPET_LEGACY_8254 2 |
| 39 | #define HPET_LEGACY_RTC 8 |
| 40 | |
| 41 | #define HPET_TN_ENABLE 0x004 |
| 42 | #define HPET_TN_PERIODIC 0x008 |
| 43 | #define HPET_TN_PERIODIC_CAP 0x010 |
| 44 | #define HPET_TN_SETVAL 0x040 |
| 45 | #define HPET_TN_32BIT 0x100 |
| 46 | |
| 47 | extern int is_hpet_enabled(void); |
| 48 | extern int hpet_rtc_timer_init(void); |
| 49 | extern int oem_force_hpet_timer(void); |
| 50 | |
| 51 | #ifdef CONFIG_HPET_EMULATE_RTC |
| 52 | extern int hpet_mask_rtc_irq_bit(unsigned long bit_mask); |
| 53 | extern int hpet_set_rtc_irq_bit(unsigned long bit_mask); |
| 54 | extern int hpet_set_alarm_time(unsigned char hrs, unsigned char min, unsigned char sec); |
| 55 | extern int hpet_set_periodic_freq(unsigned long freq); |
| 56 | extern int hpet_rtc_dropped_irq(void); |
| 57 | extern int hpet_rtc_timer_init(void); |
| 58 | #endif /* CONFIG_HPET_EMULATE_RTC */ |
| 59 | |
| 60 | #endif |