direct-io.hg

view xen/include/asm-x86/acpi.h @ 11135:88e6bd5e2b54

Whitespace clean-ups.

Signed-off-by: Steven Hand <steven@xensource.com>
author shand@kneesaa.uk.xensource.com
date Wed Aug 16 11:36:13 2006 +0100 (2006-08-16)
parents d16ae85cb89e
children f312c2d01d8b
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 #include <xen/config.h>
30 #include <asm/system.h> /* defines cmpxchg */
32 #define COMPILER_DEPENDENT_INT64 long long
33 #define COMPILER_DEPENDENT_UINT64 unsigned long long
35 /*
36 * Calling conventions:
37 *
38 * ACPI_SYSTEM_XFACE - Interfaces to host OS (handlers, threads)
39 * ACPI_EXTERNAL_XFACE - External ACPI interfaces
40 * ACPI_INTERNAL_XFACE - Internal ACPI interfaces
41 * ACPI_INTERNAL_VAR_XFACE - Internal variable-parameter list interfaces
42 */
43 #define ACPI_SYSTEM_XFACE
44 #define ACPI_EXTERNAL_XFACE
45 #define ACPI_INTERNAL_XFACE
46 #define ACPI_INTERNAL_VAR_XFACE
48 /* Asm macros */
50 #define ACPI_ASM_MACROS
51 #define BREAKPOINT3
52 #define ACPI_DISABLE_IRQS() local_irq_disable()
53 #define ACPI_ENABLE_IRQS() local_irq_enable()
54 #define ACPI_FLUSH_CPU_CACHE() wbinvd()
57 static inline int
58 __acpi_acquire_global_lock (unsigned int *lock)
59 {
60 unsigned int old, new, val;
61 do {
62 old = *lock;
63 new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
64 val = cmpxchg(lock, old, new);
65 } while (unlikely (val != old));
66 return (new < 3) ? -1 : 0;
67 }
69 static inline int
70 __acpi_release_global_lock (unsigned int *lock)
71 {
72 unsigned int old, new, val;
73 do {
74 old = *lock;
75 new = old & ~0x3;
76 val = cmpxchg(lock, old, new);
77 } while (unlikely (val != old));
78 return old & 0x1;
79 }
81 #define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) \
82 ((Acq) = __acpi_acquire_global_lock((unsigned int *) GLptr))
84 #define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq) \
85 ((Acq) = __acpi_release_global_lock((unsigned int *) GLptr))
87 /*
88 * Math helper asm macros
89 */
90 #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
91 asm("divl %2;" \
92 :"=a"(q32), "=d"(r32) \
93 :"r"(d32), \
94 "0"(n_lo), "1"(n_hi))
97 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
98 asm("shrl $1,%2;" \
99 "rcrl $1,%3;" \
100 :"=r"(n_hi), "=r"(n_lo) \
101 :"0"(n_hi), "1"(n_lo))
103 /*
104 * Refer Intel ACPI _PDC support document for bit definitions
105 */
106 #define ACPI_PDC_EST_CAPABILITY_SMP 0xa
107 #define ACPI_PDC_EST_CAPABILITY_MSR 0x1
109 #ifdef CONFIG_ACPI_BOOT
110 extern int acpi_lapic;
111 extern int acpi_ioapic;
112 extern int acpi_noirq;
113 extern int acpi_strict;
114 extern int acpi_disabled;
115 extern int acpi_ht;
116 extern int acpi_pci_disabled;
117 static inline void disable_acpi(void)
118 {
119 acpi_disabled = 1;
120 acpi_ht = 0;
121 acpi_pci_disabled = 1;
122 acpi_noirq = 1;
123 }
125 /* Fixmap pages to reserve for ACPI boot-time tables (see fixmap.h) */
126 #define FIX_ACPI_PAGES 4
128 extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
130 #ifdef CONFIG_X86_IO_APIC
131 extern int skip_ioapic_setup;
132 extern int acpi_skip_timer_override;
134 extern void check_acpi_pci(void);
136 static inline void disable_ioapic_setup(void)
137 {
138 skip_ioapic_setup = 1;
139 }
141 static inline int ioapic_setup_disabled(void)
142 {
143 return skip_ioapic_setup;
144 }
146 #else
147 static inline void disable_ioapic_setup(void) { }
148 static inline void check_acpi_pci(void) { }
150 #endif
152 #else /* CONFIG_ACPI_BOOT */
153 # define acpi_lapic 0
154 # define acpi_ioapic 0
156 #endif
158 static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
159 static inline int acpi_irq_balance_set(char *str) { return 0; }
161 #ifdef CONFIG_ACPI_SLEEP
163 /* routines for saving/restoring kernel state */
164 extern int acpi_save_state_mem(void);
165 extern int acpi_save_state_disk(void);
166 extern void acpi_restore_state_mem(void);
168 extern unsigned long acpi_wakeup_address;
170 /* early initialization routine */
171 extern void acpi_reserve_bootmem(void);
173 #endif /*CONFIG_ACPI_SLEEP*/
175 extern u8 x86_acpiid_to_apicid[];
177 #endif /*_ASM_ACPI_H*/