Commit | Line | Data |
---|---|---|
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 | |
979edfad JB |
17 | #define HPET_Tn_OFFSET 0x20 |
18 | #define HPET_Tn_CFG(n) (0x100 + (n) * HPET_Tn_OFFSET) | |
19 | #define HPET_Tn_ROUTE(n) (0x104 + (n) * HPET_Tn_OFFSET) | |
20 | #define HPET_Tn_CMP(n) (0x108 + (n) * HPET_Tn_OFFSET) | |
21 | #define HPET_T0_CFG HPET_Tn_CFG(0) | |
22 | #define HPET_T0_CMP HPET_Tn_CMP(0) | |
23 | #define HPET_T1_CFG HPET_Tn_CFG(1) | |
24 | #define HPET_T1_CMP HPET_Tn_CMP(1) | |
1da177e4 LT |
25 | |
26 | #define HPET_ID_VENDOR 0xffff0000 | |
27 | #define HPET_ID_LEGSUP 0x00008000 | |
979edfad | 28 | #define HPET_ID_64BIT 0x00002000 |
1da177e4 LT |
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 | ||
979edfad JB |
41 | #define HPET_TN_LEVEL 0x0002 |
42 | #define HPET_TN_ENABLE 0x0004 | |
43 | #define HPET_TN_PERIODIC 0x0008 | |
44 | #define HPET_TN_PERIODIC_CAP 0x0010 | |
45 | #define HPET_TN_64BIT_CAP 0x0020 | |
46 | #define HPET_TN_SETVAL 0x0040 | |
47 | #define HPET_TN_32BIT 0x0100 | |
48 | #define HPET_TN_ROUTE 0x3e00 | |
49 | #define HPET_TN_FSB 0x4000 | |
50 | #define HPET_TN_FSB_CAP 0x8000 | |
51 | ||
52 | #define HPET_TN_ROUTE_SHIFT 9 | |
1da177e4 | 53 | |
b20367a6 JH |
54 | #define HPET_TICK_RATE (HZ * 100000UL) |
55 | ||
1da177e4 LT |
56 | extern int is_hpet_enabled(void); |
57 | extern int hpet_rtc_timer_init(void); | |
f8bf3c65 | 58 | extern int apic_is_clustered_box(void); |
1da177e4 | 59 | |
33042a9f CM |
60 | extern int hpet_use_timer; |
61 | ||
1da177e4 LT |
62 | #ifdef CONFIG_HPET_EMULATE_RTC |
63 | extern int hpet_mask_rtc_irq_bit(unsigned long bit_mask); | |
64 | extern int hpet_set_rtc_irq_bit(unsigned long bit_mask); | |
65 | extern int hpet_set_alarm_time(unsigned char hrs, unsigned char min, unsigned char sec); | |
66 | extern int hpet_set_periodic_freq(unsigned long freq); | |
67 | extern int hpet_rtc_dropped_irq(void); | |
68 | extern int hpet_rtc_timer_init(void); | |
69 | #endif /* CONFIG_HPET_EMULATE_RTC */ | |
70 | ||
71 | #endif |