ia64/linux-2.6.18-xen.hg

view include/asm-i386/hpet.h @ 452:c7ed6fe5dca0

kexec: dont initialise regions in reserve_memory()

There is no need to initialise efi_memmap_res and boot_param_res in
reserve_memory() for the initial xen domain as it is done in
machine_kexec_setup_resources() using values from the kexec hypercall.

Signed-off-by: Simon Horman <horms@verge.net.au>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Feb 28 10:55:18 2008 +0000 (2008-02-28)
parents 831230e53067
children
line source
2 #ifndef _I386_HPET_H
3 #define _I386_HPET_H
5 #ifdef CONFIG_HPET_TIMER
7 #include <linux/errno.h>
8 #include <linux/module.h>
9 #include <linux/sched.h>
10 #include <linux/kernel.h>
11 #include <linux/param.h>
12 #include <linux/string.h>
13 #include <linux/mm.h>
14 #include <linux/interrupt.h>
15 #include <linux/time.h>
16 #include <linux/delay.h>
17 #include <linux/init.h>
18 #include <linux/smp.h>
20 #include <asm/io.h>
21 #include <asm/smp.h>
22 #include <asm/irq.h>
23 #include <asm/msr.h>
24 #include <asm/delay.h>
25 #include <asm/mpspec.h>
26 #include <asm/uaccess.h>
27 #include <asm/processor.h>
29 #include <linux/timex.h>
31 #include <asm/fixmap.h>
33 /*
34 * Documentation on HPET can be found at:
35 * http://www.intel.com/ial/home/sp/pcmmspec.htm
36 * ftp://download.intel.com/ial/home/sp/mmts098.pdf
37 */
39 #define HPET_MMAP_SIZE 1024
41 #define HPET_ID 0x000
42 #define HPET_PERIOD 0x004
43 #define HPET_CFG 0x010
44 #define HPET_STATUS 0x020
45 #define HPET_COUNTER 0x0f0
46 #define HPET_T0_CFG 0x100
47 #define HPET_T0_CMP 0x108
48 #define HPET_T0_ROUTE 0x110
49 #define HPET_T1_CFG 0x120
50 #define HPET_T1_CMP 0x128
51 #define HPET_T1_ROUTE 0x130
52 #define HPET_T2_CFG 0x140
53 #define HPET_T2_CMP 0x148
54 #define HPET_T2_ROUTE 0x150
56 #define HPET_ID_LEGSUP 0x00008000
57 #define HPET_ID_NUMBER 0x00001f00
58 #define HPET_ID_REV 0x000000ff
59 #define HPET_ID_NUMBER_SHIFT 8
61 #define HPET_CFG_ENABLE 0x001
62 #define HPET_CFG_LEGACY 0x002
63 #define HPET_LEGACY_8254 2
64 #define HPET_LEGACY_RTC 8
66 #define HPET_TN_ENABLE 0x004
67 #define HPET_TN_PERIODIC 0x008
68 #define HPET_TN_PERIODIC_CAP 0x010
69 #define HPET_TN_SETVAL 0x040
70 #define HPET_TN_32BIT 0x100
72 /* Use our own asm for 64 bit multiply/divide */
73 #define ASM_MUL64_REG(eax_out,edx_out,reg_in,eax_in) \
74 __asm__ __volatile__("mull %2" \
75 :"=a" (eax_out), "=d" (edx_out) \
76 :"r" (reg_in), "0" (eax_in))
78 #define ASM_DIV64_REG(eax_out,edx_out,reg_in,eax_in,edx_in) \
79 __asm__ __volatile__("divl %2" \
80 :"=a" (eax_out), "=d" (edx_out) \
81 :"r" (reg_in), "0" (eax_in), "1" (edx_in))
83 #define KERNEL_TICK_USEC (1000000UL/HZ) /* tick value in microsec */
84 /* Max HPET Period is 10^8 femto sec as in HPET spec */
85 #define HPET_MAX_PERIOD (100000000UL)
86 /*
87 * Min HPET period is 10^5 femto sec just for safety. If it is less than this,
88 * then 32 bit HPET counter wrapsaround in less than 0.5 sec.
89 */
90 #define HPET_MIN_PERIOD (100000UL)
91 #define HPET_TICK_RATE (HZ * 100000UL)
93 extern unsigned long hpet_tick; /* hpet clks count per tick */
94 extern unsigned long hpet_address; /* hpet memory map physical address */
95 extern int hpet_use_timer;
97 extern int hpet_rtc_timer_init(void);
98 extern int hpet_enable(void);
99 extern int hpet_reenable(void);
100 extern int is_hpet_enabled(void);
101 extern int is_hpet_capable(void);
102 extern int hpet_readl(unsigned long a);
104 #ifdef CONFIG_HPET_EMULATE_RTC
105 extern int hpet_mask_rtc_irq_bit(unsigned long bit_mask);
106 extern int hpet_set_rtc_irq_bit(unsigned long bit_mask);
107 extern int hpet_set_alarm_time(unsigned char hrs, unsigned char min, unsigned char sec);
108 extern int hpet_set_periodic_freq(unsigned long freq);
109 extern int hpet_rtc_dropped_irq(void);
110 extern int hpet_rtc_timer_init(void);
111 extern irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id, struct pt_regs *regs);
112 #endif /* CONFIG_HPET_EMULATE_RTC */
113 #endif /* CONFIG_HPET_TIMER */
114 #endif /* _I386_HPET_H */