60d51274fcf98c624a27384c9c8b49bfc4d4c389
[sfrench/cifs-2.6.git] / include / asm-x86_64 / hpet.h
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_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)
25
26 #define HPET_ID_VENDOR  0xffff0000
27 #define HPET_ID_LEGSUP  0x00008000
28 #define HPET_ID_64BIT   0x00002000
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_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
53
54 #define HPET_TICK_RATE (HZ * 100000UL)
55
56 extern int is_hpet_enabled(void);
57 extern int hpet_rtc_timer_init(void);
58 extern int apic_is_clustered_box(void);
59
60 extern int hpet_use_timer;
61 extern unsigned long hpet_address;
62
63 #ifdef CONFIG_HPET_EMULATE_RTC
64 extern int hpet_mask_rtc_irq_bit(unsigned long bit_mask);
65 extern int hpet_set_rtc_irq_bit(unsigned long bit_mask);
66 extern int hpet_set_alarm_time(unsigned char hrs, unsigned char min, unsigned char sec);
67 extern int hpet_set_periodic_freq(unsigned long freq);
68 extern int hpet_rtc_dropped_irq(void);
69 extern int hpet_rtc_timer_init(void);
70 #endif /* CONFIG_HPET_EMULATE_RTC */
71
72 #endif