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gerrit-public.fairphone.software / kernel / msm-4.9 / 3ebf44902f77537b5784eb5059c2b78d8b5a920a / . / include / asm-x86_64 / hpet.h
blob: 59a66f084611c676be7306d1b458b6e678b492da [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 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
Jan Beulich979edfa2005-11-05 17:25:53 +0100[diff] [blame]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)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]25
26#define HPET_ID_VENDOR 0xffff0000
27#define HPET_ID_LEGSUP 0x00008000
Jan Beulich979edfa2005-11-05 17:25:53 +0100[diff] [blame]28#define HPET_ID_64BIT 0x00002000
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]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
Jan Beulich979edfa2005-11-05 17:25:53 +0100[diff] [blame]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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]53
Jordan Hargraveb20367a2006-04-07 19:50:18 +0200[diff] [blame]54#define HPET_TICK_RATE (HZ * 100000UL)
55
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]56extern int is_hpet_enabled(void);
57extern int hpet_rtc_timer_init(void);
Vojtech Pavlikf8bf3c62006-06-26 13:58:23 +0200[diff] [blame]58extern int apic_is_clustered_box(void);
john stultzc37e7bb2007-02-16 01:28:19 -0800[diff] [blame]59extern int hpet_arch_init(void);
60extern int hpet_timer_stop_set_go(unsigned long tick);
61extern int hpet_reenable(void);
62extern unsigned int hpet_calibrate_tsc(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]63
Chris McDermott33042a92006-02-11 17:55:50 -0800[diff] [blame]64extern int hpet_use_timer;
john stultz2d0c87c2007-02-16 01:28:18 -0800[diff] [blame]65extern unsigned long hpet_address;
john stultzc37e7bb2007-02-16 01:28:19 -0800[diff] [blame]66extern unsigned long hpet_period;
67extern unsigned long hpet_tick;
Chris McDermott33042a92006-02-11 17:55:50 -0800[diff] [blame]68
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]69#ifdef CONFIG_HPET_EMULATE_RTC
70extern int hpet_mask_rtc_irq_bit(unsigned long bit_mask);
71extern int hpet_set_rtc_irq_bit(unsigned long bit_mask);
72extern int hpet_set_alarm_time(unsigned char hrs, unsigned char min, unsigned char sec);
73extern int hpet_set_periodic_freq(unsigned long freq);
74extern int hpet_rtc_dropped_irq(void);
75extern int hpet_rtc_timer_init(void);
76#endif /* CONFIG_HPET_EMULATE_RTC */
77
78#endif