| /* |
| * asm-i386/acpi.h |
| * |
| * Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> |
| * Copyright (C) 2001 Patrick Mochel <mochel@osdl.org> |
| * |
| * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| * |
| * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| */ |
| |
| #ifndef _ASM_ACPI_H |
| #define _ASM_ACPI_H |
| |
| #ifdef __KERNEL__ |
| |
| #define COMPILER_DEPENDENT_INT64 long long |
| #define COMPILER_DEPENDENT_UINT64 unsigned long long |
| |
| /* |
| * Calling conventions: |
| * |
| * ACPI_SYSTEM_XFACE - Interfaces to host OS (handlers, threads) |
| * ACPI_EXTERNAL_XFACE - External ACPI interfaces |
| * ACPI_INTERNAL_XFACE - Internal ACPI interfaces |
| * ACPI_INTERNAL_VAR_XFACE - Internal variable-parameter list interfaces |
| */ |
| #define ACPI_SYSTEM_XFACE |
| #define ACPI_EXTERNAL_XFACE |
| #define ACPI_INTERNAL_XFACE |
| #define ACPI_INTERNAL_VAR_XFACE |
| |
| /* Asm macros */ |
| |
| #define ACPI_ASM_MACROS |
| #define BREAKPOINT3 |
| #define ACPI_DISABLE_IRQS() local_irq_disable() |
| #define ACPI_ENABLE_IRQS() local_irq_enable() |
| #define ACPI_FLUSH_CPU_CACHE() wbinvd() |
| |
| /* |
| * A brief explanation as GNU inline assembly is a bit hairy |
| * %0 is the output parameter in EAX ("=a") |
| * %1 and %2 are the input parameters in ECX ("c") |
| * and an immediate value ("i") respectively |
| * All actual register references are preceded with "%%" as in "%%edx" |
| * Immediate values in the assembly are preceded by "$" as in "$0x1" |
| * The final asm parameter are the operation altered non-output registers. |
| */ |
| #define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) \ |
| do { \ |
| int dummy; \ |
| asm("1: movl (%1),%%eax;" \ |
| "movl %%eax,%%edx;" \ |
| "andl %2,%%edx;" \ |
| "btsl $0x1,%%edx;" \ |
| "adcl $0x0,%%edx;" \ |
| "lock; cmpxchgl %%edx,(%1);" \ |
| "jnz 1b;" \ |
| "cmpb $0x3,%%dl;" \ |
| "sbbl %%eax,%%eax" \ |
| :"=a"(Acq),"=c"(dummy):"c"(GLptr),"i"(~1L):"dx"); \ |
| } while(0) |
| |
| #define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq) \ |
| do { \ |
| int dummy; \ |
| asm("1: movl (%1),%%eax;" \ |
| "movl %%eax,%%edx;" \ |
| "andl %2,%%edx;" \ |
| "lock; cmpxchgl %%edx,(%1);" \ |
| "jnz 1b;" \ |
| "andl $0x1,%%eax" \ |
| :"=a"(Acq),"=c"(dummy):"c"(GLptr),"i"(~3L):"dx"); \ |
| } while(0) |
| |
| |
| /* |
| * Math helper asm macros |
| */ |
| #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \ |
| asm("divl %2;" \ |
| :"=a"(q32), "=d"(r32) \ |
| :"r"(d32), \ |
| "0"(n_lo), "1"(n_hi)) |
| |
| |
| #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \ |
| asm("shrl $1,%2;" \ |
| "rcrl $1,%3;" \ |
| :"=r"(n_hi), "=r"(n_lo) \ |
| :"0"(n_hi), "1"(n_lo)) |
| |
| |
| #ifdef CONFIG_ACPI_BOOT |
| extern int acpi_lapic; |
| extern int acpi_ioapic; |
| extern int acpi_noirq; |
| |
| /* Fixmap pages to reserve for ACPI boot-time tables (see fixmap.h) */ |
| #define FIX_ACPI_PAGES 4 |
| |
| #ifdef CONFIG_X86_IO_APIC |
| extern int skip_ioapic_setup; |
| extern int acpi_irq_to_vector(u32 irq); |
| |
| static inline void disable_ioapic_setup(void) |
| { |
| skip_ioapic_setup = 1; |
| } |
| |
| static inline int ioapic_setup_disabled(void) |
| { |
| return skip_ioapic_setup; |
| } |
| |
| #else |
| static inline void disable_ioapic_setup(void) |
| { } |
| |
| #endif |
| |
| #else /* CONFIG_ACPI_BOOT */ |
| # define acpi_lapic 0 |
| # define acpi_ioapic 0 |
| |
| #endif |
| |
| #ifdef CONFIG_ACPI_PCI |
| static inline void acpi_noirq_set(void) { acpi_noirq = 1; } |
| extern int acpi_irq_balance_set(char *str); |
| #else |
| static inline void acpi_noirq_set(void) { } |
| static inline int acpi_irq_balance_set(char *str) { return 0; } |
| #endif |
| |
| #ifdef CONFIG_ACPI_SLEEP |
| |
| /* routines for saving/restoring kernel state */ |
| extern int acpi_save_state_mem(void); |
| extern int acpi_save_state_disk(void); |
| extern void acpi_restore_state_mem(void); |
| |
| extern unsigned long acpi_wakeup_address; |
| |
| /* early initialization routine */ |
| extern void acpi_reserve_bootmem(void); |
| |
| #endif /*CONFIG_ACPI_SLEEP*/ |
| |
| #endif /*__KERNEL__*/ |
| |
| #endif /*_ASM_ACPI_H*/ |