mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
637029c6cb
This reverts commit 13a229abc2.
Quoth Andi:
"After some consideration and feedback from various people it turns
out this wasn't that good an idea. It has some problems and needs
more work. Since it was only an optimization anyways it's best to
just back it out again for now."
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
171 lines
4.4 KiB
C
171 lines
4.4 KiB
C
/*
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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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#include <acpi/pdc_intel.h>
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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() local_irq_disable()
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#define ACPI_ENABLE_IRQS() local_irq_enable()
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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
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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_pci_disabled;
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extern int acpi_ht;
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static inline void disable_acpi(void)
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{
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acpi_disabled = 1;
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acpi_ht = 0;
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acpi_pci_disabled = 1;
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acpi_noirq = 1;
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}
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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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extern int acpi_gsi_to_irq(u32 gsi, unsigned int *irq);
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static inline void acpi_noirq_set(void) { acpi_noirq = 1; }
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static inline void acpi_disable_pci(void)
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{
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acpi_pci_disabled = 1;
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acpi_noirq_set();
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}
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extern int acpi_irq_balance_set(char *str);
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#else /* !CONFIG_ACPI */
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#define acpi_lapic 0
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#define acpi_ioapic 0
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static inline void acpi_noirq_set(void) { }
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static inline void acpi_disable_pci(void) { }
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#endif /* !CONFIG_ACPI */
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extern int acpi_numa;
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extern int acpi_scan_nodes(unsigned long start, unsigned long end);
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#define NR_NODE_MEMBLKS (MAX_NUMNODES*2)
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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 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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extern int acpi_disabled;
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extern int acpi_pci_disabled;
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extern u8 x86_acpiid_to_apicid[];
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#define ARCH_HAS_POWER_INIT 1
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extern int acpi_skip_timer_override;
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#endif /*__KERNEL__*/
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#endif /*_ASM_ACPI_H*/
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