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phoenix |
/*
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* asm-x86_64/acpi.h
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*
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* Copyright (C) 2001 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
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* Copyright (C) 2001 Patrick Mochel <mochel@osdl.org>
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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#ifndef _ASM_ACPI_H
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#define _ASM_ACPI_H
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#ifdef __KERNEL__
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#define COMPILER_DEPENDENT_INT64 long long
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#define COMPILER_DEPENDENT_UINT64 unsigned long long
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/*
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* Calling conventions:
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*
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* ACPI_SYSTEM_XFACE - Interfaces to host OS (handlers, threads)
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* ACPI_EXTERNAL_XFACE - External ACPI interfaces
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* ACPI_INTERNAL_XFACE - Internal ACPI interfaces
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* ACPI_INTERNAL_VAR_XFACE - Internal variable-parameter list interfaces
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*/
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#define ACPI_SYSTEM_XFACE
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#define ACPI_EXTERNAL_XFACE
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#define ACPI_INTERNAL_XFACE
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#define ACPI_INTERNAL_VAR_XFACE
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/* Asm macros */
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#define ACPI_ASM_MACROS
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#define BREAKPOINT3
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#define ACPI_DISABLE_IRQS() __cli()
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#define ACPI_ENABLE_IRQS() __sti()
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#define ACPI_FLUSH_CPU_CACHE() wbinvd()
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static inline int
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__acpi_acquire_global_lock (unsigned int *lock)
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{
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unsigned int old, new, val;
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do {
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old = *lock;
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new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1));
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val = cmpxchg(lock, old, new);
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} while (unlikely (val != old));
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return (new < 3) ? -1 : 0;
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}
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static inline int
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__acpi_release_global_lock (unsigned int *lock)
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{
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unsigned int old, new, val;
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do {
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old = *lock;
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new = old & ~0x3;
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val = cmpxchg(lock, old, new);
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} while (unlikely (val != old));
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return old & 0x1;
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}
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#define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) \
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((Acq) = __acpi_acquire_global_lock((unsigned int *) GLptr))
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#define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq) \
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((Acq) = __acpi_release_global_lock((unsigned int *) GLptr))
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/*
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* Math helper asm macros
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*/
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#define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \
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asm("divl %2;" \
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:"=a"(q32), "=d"(r32) \
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:"r"(d32), \
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"0"(n_lo), "1"(n_hi))
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#define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \
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asm("shrl $1,%2;" \
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"rcrl $1,%3;" \
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:"=r"(n_hi), "=r"(n_lo) \
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:"0"(n_hi), "1"(n_lo))
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#ifdef CONFIG_ACPI_BOOT
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extern int acpi_lapic;
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extern int acpi_ioapic;
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extern int acpi_noirq;
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extern int acpi_strict;
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extern int acpi_disabled;
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extern int acpi_ht;
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static inline void disable_acpi(void) { acpi_disabled = 1; acpi_ht = 0; }
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/* Fixmap pages to reserve for ACPI boot-time tables (see fixmap.h) */
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#define FIX_ACPI_PAGES 4
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#else /* CONFIG_ACPI_BOOT */
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# define acpi_lapic 0
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# define acpi_ioapic 0
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#endif
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#ifdef CONFIG_ACPI_PCI
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static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
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extern int acpi_irq_balance_set(char *str);
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#else
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static inline void acpi_noirq_set(void) { }
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static inline int acpi_irq_balance_set(char *str) { return 0; }
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#endif
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#ifdef CONFIG_ACPI_SLEEP
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/* routines for saving/restoring kernel state */
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extern int acpi_save_state_mem(void);
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extern int acpi_save_state_disk(void);
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extern void acpi_restore_state_mem(void);
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extern unsigned long acpi_wakeup_address;
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/* early initialization routine */
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extern void acpi_reserve_bootmem(void);
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#endif /*CONFIG_ACPI_SLEEP*/
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#define boot_cpu_physical_apicid boot_cpu_id
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#endif /*__KERNEL__*/
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#endif /*_ASM_ACPI_H*/
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