Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Venkatesh Pallipadi | 02df8b9 | 2005-04-15 15:07:10 -0400 | [diff] [blame] | 31 | #include <acpi/pdc_intel.h> |
| 32 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Len Brown | 888ba6c | 2005-08-24 12:07:20 -0400 | [diff] [blame] | 106 | #ifdef CONFIG_ACPI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |
Len Brown | 6153df7 | 2005-08-25 12:27:09 -0400 | [diff] [blame] | 156 | |
| 157 | #else /* !CONFIG_ACPI */ |
| 158 | |
| 159 | #define acpi_lapic 0 |
| 160 | #define acpi_ioapic 0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | static inline void acpi_noirq_set(void) { } |
| 162 | static inline void acpi_disable_pci(void) { } |
Len Brown | 6153df7 | 2005-08-25 12:27:09 -0400 | [diff] [blame] | 163 | |
| 164 | #endif /* !CONFIG_ACPI */ |
| 165 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Venkatesh Pallipadi | 02df8b9 | 2005-04-15 15:07:10 -0400 | [diff] [blame] | 182 | #define ARCH_HAS_POWER_PDC_INIT 1 |
| 183 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | #endif /*__KERNEL__*/ |
| 185 | |
| 186 | #endif /*_ASM_ACPI_H*/ |