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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | /* |
| 2 | * asm-i386/acpi.h |
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| 3 | * |
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| 4 | * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> |
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| 5 | * Copyright (C) 2001 Patrick Mochel <mochel@osdl.org> |
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| 6 | * |
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| 7 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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| 8 | * |
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| 9 | * This program is free software; you can redistribute it and/or modify |
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| 10 | * it under the terms of the GNU General Public License as published by |
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| 11 | * the Free Software Foundation; either version 2 of the License, or |
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| 12 | * (at your option) any later version. |
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| 13 | * |
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| 14 | * This program is distributed in the hope that it will be useful, |
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| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 17 | * GNU General Public License for more details. |
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| 18 | * |
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| 19 | * You should have received a copy of the GNU General Public License |
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| 20 | * along with this program; if not, write to the Free Software |
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| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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| 22 | * |
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| 23 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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| 24 | */ |
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| 25 | |||
| 26 | #ifndef _ASM_ACPI_H |
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| 27 | #define _ASM_ACPI_H |
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| 28 | |||
| 29 | #ifdef __KERNEL__ |
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| 30 | |||
| 31 | #define COMPILER_DEPENDENT_INT64 long long |
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| 32 | #define COMPILER_DEPENDENT_UINT64 unsigned long long |
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| 33 | |||
| 34 | /* |
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| 35 | * Calling conventions: |
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| 36 | * |
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| 37 | * ACPI_SYSTEM_XFACE - Interfaces to host OS (handlers, threads) |
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| 38 | * ACPI_EXTERNAL_XFACE - External ACPI interfaces |
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| 39 | * ACPI_INTERNAL_XFACE - Internal ACPI interfaces |
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| 40 | * ACPI_INTERNAL_VAR_XFACE - Internal variable-parameter list interfaces |
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| 41 | */ |
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| 42 | #define ACPI_SYSTEM_XFACE |
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| 43 | #define ACPI_EXTERNAL_XFACE |
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| 44 | #define ACPI_INTERNAL_XFACE |
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| 45 | #define ACPI_INTERNAL_VAR_XFACE |
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| 46 | |||
| 47 | /* Asm macros */ |
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| 48 | |||
| 49 | #define ACPI_ASM_MACROS |
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| 50 | #define BREAKPOINT3 |
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| 51 | #define ACPI_DISABLE_IRQS() local_irq_disable() |
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| 52 | #define ACPI_ENABLE_IRQS() local_irq_enable() |
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| 53 | #define ACPI_FLUSH_CPU_CACHE() wbinvd() |
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| 54 | |||
| 55 | /* |
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| 56 | * A brief explanation as GNU inline assembly is a bit hairy |
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| 57 | * %0 is the output parameter in EAX ("=a") |
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| 58 | * %1 and %2 are the input parameters in ECX ("c") |
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| 59 | * and an immediate value ("i") respectively |
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| 60 | * All actual register references are preceded with "%%" as in "%%edx" |
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| 61 | * Immediate values in the assembly are preceded by "$" as in "$0x1" |
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| 62 | * The final asm parameter are the operation altered non-output registers. |
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| 63 | */ |
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| 64 | #define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) \ |
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| 65 | do { \ |
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| 66 | int dummy; \ |
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| 67 | asm("1: movl (%1),%%eax;" \ |
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| 68 | "movl %%eax,%%edx;" \ |
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| 69 | "andl %2,%%edx;" \ |
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| 70 | "btsl $0x1,%%edx;" \ |
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| 71 | "adcl $0x0,%%edx;" \ |
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| 72 | "lock; cmpxchgl %%edx,(%1);" \ |
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| 73 | "jnz 1b;" \ |
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| 74 | "cmpb $0x3,%%dl;" \ |
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| 75 | "sbbl %%eax,%%eax" \ |
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| 76 | :"=a"(Acq),"=c"(dummy):"c"(GLptr),"i"(~1L):"dx"); \ |
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| 77 | } while(0) |
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| 78 | |||
| 79 | #define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq) \ |
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| 80 | do { \ |
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| 81 | int dummy; \ |
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| 82 | asm("1: movl (%1),%%eax;" \ |
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| 83 | "movl %%eax,%%edx;" \ |
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| 84 | "andl %2,%%edx;" \ |
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| 85 | "lock; cmpxchgl %%edx,(%1);" \ |
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| 86 | "jnz 1b;" \ |
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| 87 | "andl $0x1,%%eax" \ |
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| 88 | :"=a"(Acq),"=c"(dummy):"c"(GLptr),"i"(~3L):"dx"); \ |
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| 89 | } while(0) |
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| 90 | |||
| 91 | |||
| 92 | /* |
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| 93 | * Math helper asm macros |
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| 94 | */ |
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| 95 | #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \ |
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| 96 | asm("divl %2;" \ |
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| 97 | :"=a"(q32), "=d"(r32) \ |
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| 98 | :"r"(d32), \ |
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| 99 | "0"(n_lo), "1"(n_hi)) |
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| 100 | |||
| 101 | |||
| 102 | #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \ |
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| 103 | asm("shrl $1,%2;" \ |
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| 104 | "rcrl $1,%3;" \ |
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| 105 | :"=r"(n_hi), "=r"(n_lo) \ |
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| 106 | :"0"(n_hi), "1"(n_lo)) |
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| 107 | |||
| 108 | |||
| 109 | #ifdef CONFIG_ACPI_BOOT |
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| 110 | extern int acpi_lapic; |
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| 111 | extern int acpi_ioapic; |
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| 112 | |||
| 113 | |||
| 114 | /* Fixmap pages to reserve for ACPI boot-time tables (see fixmap.h) */ |
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| 115 | #define FIX_ACPI_PAGES 4 |
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| 116 | |||
| 117 | #ifdef CONFIG_X86_IO_APIC |
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| 118 | extern int skip_ioapic_setup; |
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| 119 | |||
| 120 | static inline void disable_ioapic_setup(void) |
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| 121 | { |
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| 122 | skip_ioapic_setup = 1; |
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| 123 | } |
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| 124 | |||
| 125 | static inline int ioapic_setup_disabled(void) |
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| 126 | { |
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| 127 | return skip_ioapic_setup; |
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| 128 | } |
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| 129 | |||
| 130 | #else |
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| 131 | static inline void disable_ioapic_setup(void) |
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| 132 | { } |
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| 133 | |||
| 134 | #endif |
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| 135 | |||
| 136 | #else /* CONFIG_ACPI_BOOT */ |
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| 137 | # define acpi_lapic 0 |
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| 138 | # define acpi_ioapic 0 |
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| 139 | |||
| 140 | #endif |
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| 141 | |||
| 142 | #ifdef CONFIG_ACPI_SLEEP |
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| 143 | |||
| 144 | /* routines for saving/restoring kernel state */ |
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| 145 | extern int acpi_save_state_mem(void); |
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| 146 | extern int acpi_save_state_disk(void); |
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| 147 | extern void acpi_restore_state_mem(void); |
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| 148 | |||
| 149 | extern unsigned long acpi_wakeup_address; |
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| 150 | |||
| 151 | /* early initialization routine */ |
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| 152 | extern void acpi_reserve_bootmem(void); |
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| 153 | |||
| 154 | #endif /*CONFIG_ACPI_SLEEP*/ |
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| 155 | |||
| 156 | #endif /*__KERNEL__*/ |
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| 157 | |||
| 158 | #endif /*_ASM_ACPI_H*/ |