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1da177e4 LT |
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 | */ | |
25 | ||
26 | #ifndef _ASM_ACPI_H | |
27 | #define _ASM_ACPI_H | |
28 | ||
29 | #ifdef __KERNEL__ | |
30 | ||
02df8b93 VP |
31 | #include <acpi/pdc_intel.h> |
32 | ||
1da177e4 LT |
33 | #include <asm/system.h> /* defines cmpxchg */ |
34 | ||
35 | #define COMPILER_DEPENDENT_INT64 long long | |
36 | #define COMPILER_DEPENDENT_UINT64 unsigned long long | |
37 | ||
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 | |
50 | ||
51 | /* Asm macros */ | |
52 | ||
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() | |
58 | ||
59 | ||
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 | } | |
71 | ||
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 | } | |
83 | ||
84 | #define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) \ | |
85 | ((Acq) = __acpi_acquire_global_lock((unsigned int *) GLptr)) | |
86 | ||
87 | #define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq) \ | |
88 | ((Acq) = __acpi_release_global_lock((unsigned int *) GLptr)) | |
89 | ||
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)) | |
98 | ||
99 | ||
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)) | |
105 | ||
888ba6c6 | 106 | #ifdef CONFIG_ACPI |
1da177e4 LT |
107 | extern int acpi_lapic; |
108 | extern int acpi_ioapic; | |
109 | extern int acpi_noirq; | |
110 | extern int acpi_strict; | |
111 | extern int acpi_disabled; | |
112 | extern int acpi_ht; | |
113 | extern int acpi_pci_disabled; | |
114 | static inline void disable_acpi(void) | |
115 | { | |
116 | acpi_disabled = 1; | |
117 | acpi_ht = 0; | |
118 | acpi_pci_disabled = 1; | |
119 | acpi_noirq = 1; | |
120 | } | |
121 | ||
122 | /* Fixmap pages to reserve for ACPI boot-time tables (see fixmap.h) */ | |
123 | #define FIX_ACPI_PAGES 4 | |
124 | ||
125 | extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq); | |
126 | ||
127 | #ifdef CONFIG_X86_IO_APIC | |
128 | extern int skip_ioapic_setup; | |
129 | extern int acpi_skip_timer_override; | |
130 | ||
131 | extern void check_acpi_pci(void); | |
132 | ||
133 | static inline void disable_ioapic_setup(void) | |
134 | { | |
135 | skip_ioapic_setup = 1; | |
136 | } | |
137 | ||
138 | static inline int ioapic_setup_disabled(void) | |
139 | { | |
140 | return skip_ioapic_setup; | |
141 | } | |
142 | ||
143 | #else | |
144 | static inline void disable_ioapic_setup(void) { } | |
145 | static inline void check_acpi_pci(void) { } | |
146 | ||
147 | #endif | |
148 | ||
1da177e4 LT |
149 | static inline void acpi_noirq_set(void) { acpi_noirq = 1; } |
150 | static inline void acpi_disable_pci(void) | |
151 | { | |
152 | acpi_pci_disabled = 1; | |
153 | acpi_noirq_set(); | |
154 | } | |
155 | extern int acpi_irq_balance_set(char *str); | |
6153df7b LB |
156 | |
157 | #else /* !CONFIG_ACPI */ | |
158 | ||
159 | #define acpi_lapic 0 | |
160 | #define acpi_ioapic 0 | |
1da177e4 LT |
161 | static inline void acpi_noirq_set(void) { } |
162 | static inline void acpi_disable_pci(void) { } | |
6153df7b LB |
163 | |
164 | #endif /* !CONFIG_ACPI */ | |
165 | ||
1da177e4 LT |
166 | |
167 | #ifdef CONFIG_ACPI_SLEEP | |
168 | ||
169 | /* routines for saving/restoring kernel state */ | |
170 | extern int acpi_save_state_mem(void); | |
171 | extern void acpi_restore_state_mem(void); | |
172 | ||
173 | extern unsigned long acpi_wakeup_address; | |
174 | ||
175 | /* early initialization routine */ | |
176 | extern void acpi_reserve_bootmem(void); | |
177 | ||
178 | #endif /*CONFIG_ACPI_SLEEP*/ | |
179 | ||
180 | extern u8 x86_acpiid_to_apicid[]; | |
181 | ||
02df8b93 VP |
182 | #define ARCH_HAS_POWER_PDC_INIT 1 |
183 | ||
1da177e4 LT |
184 | #endif /*__KERNEL__*/ |
185 | ||
186 | #endif /*_ASM_ACPI_H*/ |