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Annotation of kernel/machdep/i386/io_inline.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: /*
        !            26:  * Copyright (c) 1992 NeXT Computer, Inc.
        !            27:  *
        !            28:  * Inlines for io space access.
        !            29:  *
        !            30:  * HISTORY
        !            31:  *
        !            32:  * 20 May 1992 ? at NeXT
        !            33:  *     Created.
        !            34:  */
        !            35:  
        !            36: #import <architecture/i386/io.h>
        !            37: 
        !            38: #if    !defined(DEFINE_INLINE_FUNCTIONS)
        !            39: static
        !            40: #endif
        !            41: inline
        !            42: unsigned char
        !            43: inb(
        !            44:     io_addr_t          port
        !            45: )
        !            46: {
        !            47:     unsigned char      data;
        !            48:     
        !            49:     asm volatile(
        !            50:        "inb %1,%0"
        !            51:        
        !            52:        : "=a" (data)
        !            53:        : "d" (port));
        !            54:        
        !            55:     return (data);
        !            56: }
        !            57:  
        !            58: #if    !defined(DEFINE_INLINE_FUNCTIONS)
        !            59: static
        !            60: #endif
        !            61: inline
        !            62: unsigned short
        !            63: inw(
        !            64:     io_addr_t          port
        !            65: )
        !            66: {
        !            67:     unsigned short     data;
        !            68:     
        !            69:     asm volatile(
        !            70:        "inw %1,%0"
        !            71:        
        !            72:        : "=a" (data)
        !            73:        : "d" (port));
        !            74:        
        !            75:     return (data);
        !            76: }
        !            77: 
        !            78: #if    !defined(DEFINE_INLINE_FUNCTIONS)
        !            79: static
        !            80: #endif
        !            81: inline
        !            82: unsigned short
        !            83: inl(
        !            84:     io_addr_t          port
        !            85: )
        !            86: {
        !            87:     unsigned short     data;
        !            88:     
        !            89:     asm volatile(
        !            90:        "inl %1,%0"
        !            91:        
        !            92:        : "=a" (data)
        !            93:        : "d" (port));
        !            94:        
        !            95:     return (data);
        !            96: }
        !            97: 
        !            98: #if    !defined(DEFINE_INLINE_FUNCTIONS)
        !            99: static
        !           100: #endif
        !           101: inline
        !           102: void
        !           103: outb(
        !           104:     io_addr_t          port,
        !           105:     unsigned char      data
        !           106: )
        !           107: {
        !           108:     static int         xxx;
        !           109: 
        !           110:     asm volatile(
        !           111:        "outb %2,%1; lock; incl %0"
        !           112:        
        !           113:        : "=m" (xxx)
        !           114:        : "d" (port), "a" (data), "0" (xxx)
        !           115:        : "cc");
        !           116: }
        !           117: 
        !           118: #if    !defined(DEFINE_INLINE_FUNCTIONS)
        !           119: static
        !           120: #endif
        !           121: inline
        !           122: void
        !           123: outw(
        !           124:     io_addr_t          port,
        !           125:     unsigned short     data
        !           126: )
        !           127: {
        !           128:     static int         xxx;
        !           129: 
        !           130:     asm volatile(
        !           131:        "outw %2,%1; lock; incl %0"
        !           132:        
        !           133:        : "=m" (xxx)
        !           134:        : "d" (port), "a" (data), "0" (xxx)
        !           135:        : "cc");
        !           136: }
        !           137: 
        !           138: #if    !defined(DEFINE_INLINE_FUNCTIONS)
        !           139: static
        !           140: #endif
        !           141: inline
        !           142: void
        !           143: outl(
        !           144:     io_addr_t          port,
        !           145:     unsigned short     data
        !           146: )
        !           147: {
        !           148:     static int         xxx;
        !           149: 
        !           150:     asm volatile(
        !           151:        "outl %2,%1; lock; incl %0"
        !           152:        
        !           153:        : "=m" (xxx)
        !           154:        : "d" (port), "a" (data), "0" (xxx)
        !           155:        : "cc");
        !           156: }
        !           157: 

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