1 /*- 2 * Copyright (c) 2002 Mitsuru IWASAKI 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 /****************************************************************************** 30 * 31 * Name: acpica_machdep.h - arch-specific defines, etc. 32 * $Revision$ 33 * 34 *****************************************************************************/ 35 36 #ifndef __ACPICA_MACHDEP_H__ 37 #define __ACPICA_MACHDEP_H__ 38 39 #ifdef _KERNEL 40 /* 41 * Calling conventions: 42 * 43 * ACPI_SYSTEM_XFACE - Interfaces to host OS (handlers, threads) 44 * ACPI_EXTERNAL_XFACE - External ACPI interfaces 45 * ACPI_INTERNAL_XFACE - Internal ACPI interfaces 46 * ACPI_INTERNAL_VAR_XFACE - Internal variable-parameter list interfaces 47 */ 48 #define ACPI_SYSTEM_XFACE 49 #define ACPI_EXTERNAL_XFACE 50 #define ACPI_INTERNAL_XFACE 51 #define ACPI_INTERNAL_VAR_XFACE 52 53 /* Asm macros */ 54 55 #define ACPI_ASM_MACROS 56 #define BREAKPOINT3 57 #define ACPI_DISABLE_IRQS() disable_intr() 58 #define ACPI_ENABLE_IRQS() enable_intr() 59 60 #define ACPI_FLUSH_CPU_CACHE() wbinvd() 61 62 #define asm __asm 63 /*! [Begin] no source code translation 64 * 65 * A brief explanation as GNU inline assembly is a bit hairy 66 * %0 is the output parameter in EAX ("=a") 67 * %1 and %2 are the input parameters in ECX ("c") 68 * and an immediate value ("i") respectively 69 * All actual register references are preceded with "%%" as in "%%edx" 70 * Immediate values in the assembly are preceded by "$" as in "$0x1" 71 * The final asm parameter are the operation altered non-output registers. 72 */ 73 #define ACPI_ACQUIRE_GLOBAL_LOCK(GLptr, Acq) \ 74 do { \ 75 int dummy; \ 76 asm("1: movl (%1),%%eax;" \ 77 "movl %%eax,%%edx;" \ 78 "andl %2,%%edx;" \ 79 "btsl $0x1,%%edx;" \ 80 "adcl $0x0,%%edx;" \ 81 "lock; cmpxchgl %%edx,(%1);" \ 82 "jnz 1b;" \ 83 "cmpb $0x3,%%dl;" \ 84 "sbbl %%eax,%%eax" \ 85 :"=a"(Acq),"=c"(dummy):"c"(GLptr),"i"(~1L):"dx"); \ 86 } while(0) 87 88 #define ACPI_RELEASE_GLOBAL_LOCK(GLptr, Acq) \ 89 do { \ 90 int dummy; \ 91 asm("1: movl (%1),%%eax;" \ 92 "movl %%eax,%%edx;" \ 93 "andl %2,%%edx;" \ 94 "lock; cmpxchgl %%edx,(%1);" \ 95 "jnz 1b;" \ 96 "andl $0x1,%%eax" \ 97 :"=a"(Acq),"=c"(dummy):"c"(GLptr),"i"(~3L):"dx"); \ 98 } while(0) 99 100 101 /* 102 * Math helper asm macros 103 */ 104 #define ACPI_DIV_64_BY_32(n_hi, n_lo, d32, q32, r32) \ 105 asm("divl %2;" \ 106 :"=a"(q32), "=d"(r32) \ 107 :"r"(d32), \ 108 "0"(n_lo), "1"(n_hi)) 109 110 111 #define ACPI_SHIFT_RIGHT_64(n_hi, n_lo) \ 112 asm("shrl $1,%2;" \ 113 "rcrl $1,%3;" \ 114 :"=r"(n_hi), "=r"(n_lo) \ 115 :"0"(n_hi), "1"(n_lo)) 116 117 /*! [End] no source code translation !*/ 118 #endif /* _KERNEL */ 119 120 #define ACPI_MACHINE_WIDTH 32 121 #define COMPILER_DEPENDENT_INT64 long long 122 #define COMPILER_DEPENDENT_UINT64 unsigned long long 123 #define ACPI_USE_NATIVE_DIVIDE 124 125 #endif /* __ACPICA_MACHDEP_H__ */ 126