bsd/dev/i386/pio.h

   1 /*
   2  * Copyright (c) 2006 Apple Computer, Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License.  The rights granted to you under the
  10  * License may not be used to create, or enable the creation or
  11  * redistribution of, unlawful or unlicensed copies of an Apple operating
  12  * system, or to circumvent, violate, or enable the circumvention or
  13  * violation of, any terms of an Apple operating system software license
  14  * agreement.
  15  *
  16  * Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  29  */
  30 /*
  31  * @OSF_COPYRIGHT@
  32  */
  33 /*
  34  * HISTORY
  35  *
  36  * Revision 1.2  1998/09/30 21:20:45  wsanchez
  37  * Merged in IntelMerge1 (mburg: Intel support)
  38  *
  39  * Revision 1.1.2.1  1998/09/30 18:18:50  mburg
  40  * Changes for Intel port
  41  *
  42  * Revision 1.1.1.1  1998/03/07 02:25:38  wsanchez
  43  * Import of OSF Mach kernel (~mburg)
  44  *
  45  * Revision 1.1.8.2  1996/07/31  09:46:36  paire
  46  *      Merged with nmk20b7_shared (1.1.11.2 -> 1.1.11.1)
  47  *      [96/06/10            paire]
  48  *
  49  * Revision 1.1.11.2  1996/06/13  12:38:25  bernadat
  50  *      Do not use inline macros when MACH_ASSERT is configured.
  51  *      [96/05/24            bernadat]
  52  *
  53  * Revision 1.1.11.1  1996/05/14  13:50:23  paire
  54  *      Added new linl and loutl __inline__.
  55  *      Added conditional compilation for [l]{in|oub}[bwl]() __inline__.
  56  *      [95/11/24            paire]
  57  *
  58  * Revision 1.1.8.1  1994/09/23  02:00:28  ezf
  59  *      change marker to not FREE
  60  *      [1994/09/22  21:25:52  ezf]
  61  *
  62  * Revision 1.1.4.5  1993/08/09  19:40:41  dswartz
  63  *      Add ANSI prototypes - CR#9523
  64  *      [1993/08/06  17:45:57  dswartz]
  65  *
  66  * Revision 1.1.4.4  1993/06/11  15:17:37  jeffc
  67  *      CR9176 - ANSI C violations: inb/outb macros must be changed from
  68  *      ({ ... }) to inline functions, with proper type definitions. Callers
  69  *      must pass proper types to these functions: 386 I/O port addresses
  70  *      are unsigned shorts (not pointers).
  71  *      [1993/06/10  14:26:10  jeffc]
  72  *
  73  * Revision 1.1.4.3  1993/06/07  22:09:28  jeffc
  74  *      CR9176 - ANSI C violations: trailing tokens on CPP
  75  *      directives, extra semicolons after decl_ ..., asm keywords
  76  *      [1993/06/07  19:00:26  jeffc]
  77  *
  78  * Revision 1.1.4.2  1993/06/04  15:28:45  jeffc
  79  *      CR9176 - ANSI problems -
  80  *      Added casts to get macros to take caddr_t as an I/O space address.
  81  *      [1993/06/04  13:45:55  jeffc]
  82  *
  83  * Revision 1.1  1992/09/30  02:25:51  robert
  84  *      Initial revision
  85  *
  86  * $EndLog$
  87  */
  88 /* CMU_HIST */
  89 /*
  90  * Revision 2.5  91/05/14  16:14:20  mrt
  91  *      Correcting copyright
  92  *
  93  * Revision 2.4  91/02/05  17:13:56  mrt
  94  *      Changed to new Mach copyright
  95  *      [91/02/01  17:37:08  mrt]
  96  *
  97  * Revision 2.3  90/12/20  16:36:37  jeffreyh
  98  *      changes for __STDC__
  99  *      [90/12/07            jeffreyh]
 100  *
 101  * Revision 2.2  90/11/26  14:48:41  rvb
 102  *      Pulled from 2.5
 103  *      [90/11/22  10:09:38  rvb]
 104  *
 105  *      [90/08/14            mg32]
 106  *
 107  *      Now we know how types are factor in.
 108  *      Cleaned up a bunch: eliminated ({ for output and flushed unused
 109  *      output variables.
 110  *      [90/08/14            rvb]
 111  *
 112  *      This is how its done in gcc:
 113  *              Created.
 114  *      [90/03/26            rvb]
 115  *
 116  */
 117 /* CMU_ENDHIST */
 118 /*
 119  * Mach Operating System
 120  * Copyright (c) 1991,1990 Carnegie Mellon University
 121  * All Rights Reserved.
 122  *
 123  * Permission to use, copy, modify and distribute this software and its
 124  * documentation is hereby granted, provided that both the copyright
 125  * notice and this permission notice appear in all copies of the
 126  * software, derivative works or modified versions, and any portions
 127  * thereof, and that both notices appear in supporting documentation.
 128  *
 129  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 130  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 131  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 132  *
 133  * Carnegie Mellon requests users of this software to return to
 134  *
 135  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 136  *  School of Computer Science
 137  *  Carnegie Mellon University
 138  *  Pittsburgh PA 15213-3890
 139  *
 140  * any improvements or extensions that they make and grant Carnegie Mellon
 141  * the rights to redistribute these changes.
 142  */
 143 /*
 144  */
 145 #ifndef I386_PIO_H
 146 #define I386_PIO_H
 147
 148 typedef unsigned short i386_ioport_t;
 149
 150 /* read a longword */
 151 extern unsigned long    inl(
 152                                 i386_ioport_t   port);
 153 /* read a shortword */
 154 extern unsigned short   inw(
 155                                 i386_ioport_t   port);
 156 /* read a byte */
 157 extern unsigned char    inb(
 158                                 i386_ioport_t   port);
 159 /* write a longword */
 160 extern void             outl(
 161                                 i386_ioport_t   port,
 162                                 unsigned long   datum);
 163 /* write a word */
 164 extern void             outw(
 165                                 i386_ioport_t   port,
 166                                 unsigned short  datum);
 167 /* write a longword */
 168 extern void             outb(
 169                                 i386_ioport_t   port,
 170                                 unsigned char   datum);
 171
 172 /* input an array of longwords */
 173 extern void             linl(
 174                                 i386_ioport_t   port,
 175                                 int             * data,
 176                                 int             count);
 177 /* output an array of longwords */
 178 extern void             loutl(
 179                                 i386_ioport_t   port,
 180                                 int             * data,
 181                                 int             count);
 182
 183 /* input an array of words */
 184 extern void             linw(
 185                                 i386_ioport_t   port,
 186                                 int             * data,
 187                                 int             count);
 188 /* output an array of words */
 189 extern void             loutw(
 190                                 i386_ioport_t   port,
 191                                 int             * data,
 192                                 int             count);
 193
 194 /* input an array of bytes */
 195 extern void             linb(
 196                                 i386_ioport_t   port,
 197                                 char            * data,
 198                                 int             count);
 199 /* output an array of bytes */
 200 extern void             loutb(
 201                                 i386_ioport_t   port,
 202                                 char            * data,
 203                                 int             count);
 204
 205 extern __inline__ unsigned long inl(
 206                                 i386_ioport_t port)
 207 {
 208         unsigned long datum;
 209         __asm__ volatile("inl %1, %0" : "=a" (datum) : "d" (port));
 210         return(datum);
 211 }
 212
 213 extern __inline__ unsigned short inw(
 214                                 i386_ioport_t port)
 215 {
 216         unsigned short datum;
 217         __asm__ volatile(".byte 0x66; inl %1, %0" : "=a" (datum) : "d" (port));
 218         return(datum);
 219 }
 220
 221 extern __inline__ unsigned char inb(
 222                                 i386_ioport_t port)
 223 {
 224         unsigned char datum;
 225         __asm__ volatile("inb %1, %0" : "=a" (datum) : "d" (port));
 226         return(datum);
 227 }
 228
 229 extern __inline__ void outl(
 230                                 i386_ioport_t port,
 231                                 unsigned long datum)
 232 {
 233         __asm__ volatile("outl %0, %1" : : "a" (datum), "d" (port));
 234 }
 235
 236 extern __inline__ void outw(
 237                                 i386_ioport_t port,
 238                                 unsigned short datum)
 239 {
 240         __asm__ volatile(".byte 0x66; outl %0, %1" : : "a" (datum), "d" (port));
 241 }
 242
 243 extern __inline__ void outb(
 244                                 i386_ioport_t port,
 245                                 unsigned char datum)
 246 {
 247         __asm__ volatile("outb %0, %1" : : "a" (datum), "d" (port));
 248 }
 249
 250 #endif /* I386_PIO_H */