kernel-ark/include/asm-x86_64/hpet.h
john stultz c37e7bb5d2 [PATCH] time: x86_64: split x86_64/kernel/time.c up
In preparation for the x86_64 generic time conversion, this patch splits out
TSC and HPET related code from arch/x86_64/kernel/time.c into respective
hpet.c and tsc.c files.

[akpm@osdl.org: fix printk timestamps]
[akpm@osdl.org: cleanup]
Signed-off-by: John Stultz <johnstul@us.ibm.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Andi Kleen <ak@muc.de>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-16 08:14:00 -08:00

79 lines
2.2 KiB
C

#ifndef _ASM_X8664_HPET_H
#define _ASM_X8664_HPET_H 1
/*
* Documentation on HPET can be found at:
* http://www.intel.com/ial/home/sp/pcmmspec.htm
* ftp://download.intel.com/ial/home/sp/mmts098.pdf
*/
#define HPET_MMAP_SIZE 1024
#define HPET_ID 0x000
#define HPET_PERIOD 0x004
#define HPET_CFG 0x010
#define HPET_STATUS 0x020
#define HPET_COUNTER 0x0f0
#define HPET_Tn_OFFSET 0x20
#define HPET_Tn_CFG(n) (0x100 + (n) * HPET_Tn_OFFSET)
#define HPET_Tn_ROUTE(n) (0x104 + (n) * HPET_Tn_OFFSET)
#define HPET_Tn_CMP(n) (0x108 + (n) * HPET_Tn_OFFSET)
#define HPET_T0_CFG HPET_Tn_CFG(0)
#define HPET_T0_CMP HPET_Tn_CMP(0)
#define HPET_T1_CFG HPET_Tn_CFG(1)
#define HPET_T1_CMP HPET_Tn_CMP(1)
#define HPET_ID_VENDOR 0xffff0000
#define HPET_ID_LEGSUP 0x00008000
#define HPET_ID_64BIT 0x00002000
#define HPET_ID_NUMBER 0x00001f00
#define HPET_ID_REV 0x000000ff
#define HPET_ID_NUMBER_SHIFT 8
#define HPET_ID_VENDOR_SHIFT 16
#define HPET_ID_VENDOR_8086 0x8086
#define HPET_CFG_ENABLE 0x001
#define HPET_CFG_LEGACY 0x002
#define HPET_LEGACY_8254 2
#define HPET_LEGACY_RTC 8
#define HPET_TN_LEVEL 0x0002
#define HPET_TN_ENABLE 0x0004
#define HPET_TN_PERIODIC 0x0008
#define HPET_TN_PERIODIC_CAP 0x0010
#define HPET_TN_64BIT_CAP 0x0020
#define HPET_TN_SETVAL 0x0040
#define HPET_TN_32BIT 0x0100
#define HPET_TN_ROUTE 0x3e00
#define HPET_TN_FSB 0x4000
#define HPET_TN_FSB_CAP 0x8000
#define HPET_TN_ROUTE_SHIFT 9
#define HPET_TICK_RATE (HZ * 100000UL)
extern int is_hpet_enabled(void);
extern int hpet_rtc_timer_init(void);
extern int apic_is_clustered_box(void);
extern int hpet_arch_init(void);
extern int hpet_timer_stop_set_go(unsigned long tick);
extern int hpet_reenable(void);
extern unsigned int hpet_calibrate_tsc(void);
extern int hpet_use_timer;
extern unsigned long hpet_address;
extern unsigned long hpet_period;
extern unsigned long hpet_tick;
#ifdef CONFIG_HPET_EMULATE_RTC
extern int hpet_mask_rtc_irq_bit(unsigned long bit_mask);
extern int hpet_set_rtc_irq_bit(unsigned long bit_mask);
extern int hpet_set_alarm_time(unsigned char hrs, unsigned char min, unsigned char sec);
extern int hpet_set_periodic_freq(unsigned long freq);
extern int hpet_rtc_dropped_irq(void);
extern int hpet_rtc_timer_init(void);
#endif /* CONFIG_HPET_EMULATE_RTC */
#endif