ia64/linux-2.6.18-xen.hg

view include/asm-i386/acpi.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 a9f723af5e18
children 0d6c9c975eae
line source
1 /*
2 * asm-i386/acpi.h
3 *
4 * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
5 * Copyright (C) 2001 Patrick Mochel <mochel@osdl.org>
6 *
7 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
24 */
26 #ifndef _ASM_ACPI_H
27 #define _ASM_ACPI_H
29 #ifdef __KERNEL__
31 #include <acpi/pdc_intel.h>
33 #include <asm/system.h> /* defines cmpxchg */
35 #define COMPILER_DEPENDENT_INT64 long long
36 #define COMPILER_DEPENDENT_UINT64 unsigned long long
38 /*
39 * Calling conventions:
40 *
41 * ACPI_SYSTEM_XFACE - Interfaces to host OS (handlers, threads)
42 * ACPI_EXTERNAL_XFACE - External ACPI interfaces
43 * ACPI_INTERNAL_XFACE - Internal ACPI interfaces
44 * ACPI_INTERNAL_VAR_XFACE - Internal variable-parameter list interfaces
45 */
46 #define ACPI_SYSTEM_XFACE
47 #define ACPI_EXTERNAL_XFACE
48 #define ACPI_INTERNAL_XFACE
49 #define ACPI_INTERNAL_VAR_XFACE
51 /* Asm macros */
53 #define ACPI_ASM_MACROS
54 #define BREAKPOINT3
55 #define ACPI_DISABLE_IRQS() local_irq_disable()
56 #define ACPI_ENABLE_IRQS() local_irq_enable()
57 #define ACPI_FLUSH_CPU_CACHE() wbinvd()
60 static inline int
61 __acpi_acquire_global_lock (unsigned int *lock)
62 {
63 unsigned int old, new, val;
64 do {
65 old = *lock;
66 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
67 val = cmpxchg(lock, old, new);
68 } while (unlikely (val != old));
69 return (new < 3) ? -1 : 0;
70 }
72 static inline int
73 __acpi_release_global_lock (unsigned int *lock)
74 {
75 unsigned int old, new, val;
76 do {
77 old = *lock;
78 new = old & ~0x3;
79 val = cmpxchg(lock, old, new);
80 } while (unlikely (val != old));
81 return old & 0x1;
82 }
84 #define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) \
85 ((Acq) = __acpi_acquire_global_lock((unsigned int *) GLptr))
87 #define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq) \
88 ((Acq) = __acpi_release_global_lock((unsigned int *) GLptr))
90 /*
91 * Math helper asm macros
92 */
93 #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
94 asm("divl %2;" \
95 :"=a"(q32), "=d"(r32) \
96 :"r"(d32), \
97 "0"(n_lo), "1"(n_hi))
100 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
101 asm("shrl $1,%2;" \
102 "rcrl $1,%3;" \
103 :"=r"(n_hi), "=r"(n_lo) \
104 :"0"(n_hi), "1"(n_lo))
106 #ifdef CONFIG_X86_IO_APIC
107 extern void check_acpi_pci(void);
108 #else
109 static inline void check_acpi_pci(void) { }
110 #endif
112 #ifdef CONFIG_ACPI
113 extern int acpi_lapic;
114 extern int acpi_ioapic;
115 extern int acpi_noirq;
116 extern int acpi_strict;
117 extern int acpi_disabled;
118 extern int acpi_ht;
119 extern int acpi_pci_disabled;
120 static inline void disable_acpi(void)
121 {
122 acpi_disabled = 1;
123 acpi_ht = 0;
124 acpi_pci_disabled = 1;
125 acpi_noirq = 1;
126 }
128 /* Fixmap pages to reserve for ACPI boot-time tables (see fixmap.h) */
129 #define FIX_ACPI_PAGES 4
131 extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
133 #ifdef CONFIG_X86_IO_APIC
134 extern int skip_ioapic_setup;
135 extern int acpi_skip_timer_override;
137 static inline void disable_ioapic_setup(void)
138 {
139 skip_ioapic_setup = 1;
140 }
142 static inline int ioapic_setup_disabled(void)
143 {
144 return skip_ioapic_setup;
145 }
147 #else
148 static inline void disable_ioapic_setup(void) { }
149 #endif
151 static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
152 static inline void acpi_disable_pci(void)
153 {
154 acpi_pci_disabled = 1;
155 acpi_noirq_set();
156 }
157 extern int acpi_irq_balance_set(char *str);
159 #else /* !CONFIG_ACPI */
161 #define acpi_lapic 0
162 #define acpi_ioapic 0
163 static inline void acpi_noirq_set(void) { }
164 static inline void acpi_disable_pci(void) { }
166 #endif /* !CONFIG_ACPI */
169 #ifdef CONFIG_ACPI_SLEEP
171 /* routines for saving/restoring kernel state */
172 extern int acpi_save_state_mem(void);
173 extern void acpi_restore_state_mem(void);
175 extern unsigned long acpi_wakeup_address;
177 /* early initialization routine */
178 extern void acpi_reserve_bootmem(void);
180 #ifdef CONFIG_ACPI_PV_SLEEP
181 extern int acpi_notify_hypervisor_state(u8 sleep_state,
182 u32 pm1a_cnt, u32 pm1b_cnt);
183 #endif /* CONFIG_ACPI_PV_SLEEP */
184 #endif /*CONFIG_ACPI_SLEEP*/
186 extern u8 x86_acpiid_to_apicid[];
188 #ifndef CONFIG_XEN
189 #define ARCH_HAS_POWER_INIT 1
190 #endif
192 #endif /*__KERNEL__*/
194 #endif /*_ASM_ACPI_H*/