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/* * 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__ #include <acpi/pdc_intel.h> #include <asm/system.h> /* defines cmpxchg */ #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() static inline int __acpi_acquire_global_lock (unsigned int *lock) { unsigned int old, new, val; do { old = *lock; new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1)); val = cmpxchg(lock, old, new); } while (unlikely (val != old)); return (new < 3) ? -1 : 0; } static inline int __acpi_release_global_lock (unsigned int *lock) { unsigned int old, new, val; do { old = *lock; new = old & ~0x3; val = cmpxchg(lock, old, new); } while (unlikely (val != old)); return old & 0x1; } #define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) \ ((Acq) = __acpi_acquire_global_lock((unsigned int *) GLptr)) #define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq) \ ((Acq) = __acpi_release_global_lock((unsigned int *) GLptr)) /* * 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 extern int acpi_lapic; extern int acpi_ioapic; extern int acpi_noirq; extern int acpi_strict; extern int acpi_disabled; extern int acpi_ht; extern int acpi_pci_disabled; static inline void disable_acpi(void) { acpi_disabled = 1; acpi_ht = 0; acpi_pci_disabled = 1; acpi_noirq = 1; } /* Fixmap pages to reserve for ACPI boot-time tables (see fixmap.h) */ #define FIX_ACPI_PAGES 4 extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq); #ifdef CONFIG_X86_IO_APIC extern int skip_ioapic_setup; extern int acpi_skip_timer_override; extern void check_acpi_pci(void); 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) { } static inline void check_acpi_pci(void) { } #endif static inline void acpi_noirq_set(void) { acpi_noirq = 1; } static inline void acpi_disable_pci(void) { acpi_pci_disabled = 1; acpi_noirq_set(); } extern int acpi_irq_balance_set(char *str); #else /* !CONFIG_ACPI */ #define acpi_lapic 0 #define acpi_ioapic 0 static inline void acpi_noirq_set(void) { } static inline void acpi_disable_pci(void) { } #endif /* !CONFIG_ACPI */ #ifdef CONFIG_ACPI_SLEEP /* routines for saving/restoring kernel state */ extern int acpi_save_state_mem(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*/ extern u8 x86_acpiid_to_apicid[]; #define ARCH_HAS_POWER_INIT 1 #endif /*__KERNEL__*/ #endif /*_ASM_ACPI_H*/