freebsd-dev/sys/i386/include/acpica_machdep.h
John Baldwin 9dc9d63d01 Reinstate the bug fix in revision 1.2 as it is correct. The errors I saw
on my laptop after this change were the result of a bug in the ACPICA code.
2003-06-07 14:34:18 +00:00

124 lines
4.2 KiB
C

/*-
* Copyright (c) 2002 Mitsuru IWASAKI
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
/******************************************************************************
*
* Name: acpica_machdep.h - arch-specific defines, etc.
* $Revision$
*
*****************************************************************************/
#ifndef __ACPICA_MACHDEP_H__
#define __ACPICA_MACHDEP_H__
#ifdef _KERNEL
/*
* 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() disable_intr()
#define ACPI_ENABLE_IRQS() enable_intr()
#define ACPI_FLUSH_CPU_CACHE() wbinvd()
#define asm __asm
/*! [Begin] no source code translation
*
* 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 { \
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), "+m" (GLptr) : "i" (~1L) : "edx"); \
} while(0)
#define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq) \
do { \
asm("1: movl %1,%%eax;" \
"movl %%eax,%%edx;" \
"andl %2,%%edx;" \
"lock; cmpxchgl %%edx,%1;" \
"jnz 1b;" \
"andl $0x1,%%eax" \
: "=a" (Acq), "+m" (GLptr) : "i" (~3L) : "edx"); \
} 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))
/*! [End] no source code translation !*/
#endif /* _KERNEL */
#define ACPI_MACHINE_WIDTH 32
#define COMPILER_DEPENDENT_INT64 long long
#define COMPILER_DEPENDENT_UINT64 unsigned long long
#define ACPI_USE_NATIVE_DIVIDE
#endif /* __ACPICA_MACHDEP_H__ */