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1da177e4 LT |
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 |