osfmk/i386/pic.h

   1 /*
   2  * Copyright (c) 2000 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 /*
  35  * Mach Operating System
  36  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
  37  * All Rights Reserved.
  38  *
  39  * Permission to use, copy, modify and distribute this software and its
  40  * documentation is hereby granted, provided that both the copyright
  41  * notice and this permission notice appear in all copies of the
  42  * software, derivative works or modified versions, and any portions
  43  * thereof, and that both notices appear in supporting documentation.
  44  *
  45  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  46  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  47  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  48  *
  49  * Carnegie Mellon requests users of this software to return to
  50  *
  51  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  52  *  School of Computer Science
  53  *  Carnegie Mellon University
  54  *  Pittsburgh PA 15213-3890
  55  *
  56  * any improvements or extensions that they make and grant Carnegie Mellon
  57  * the rights to redistribute these changes.
  58  */
  59 /*
  60  */
  61
  62 /*
  63 Copyright (c) 1988,1989 Prime Computer, Inc.  Natick, MA 01760
  64 All Rights Reserved.
  65
  66 Permission to use, copy, modify, and distribute this
  67 software and its documentation for any purpose and
  68 without fee is hereby granted, provided that the above
  69 copyright notice appears in all copies and that both the
  70 copyright notice and this permission notice appear in
  71 supporting documentation, and that the name of Prime
  72 Computer, Inc. not be used in advertising or publicity
  73 pertaining to distribution of the software without
  74 specific, written prior permission.
  75
  76 THIS SOFTWARE IS PROVIDED "AS IS", AND PRIME COMPUTER,
  77 INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
  78 SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  79 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  IN
  80 NO EVENT SHALL PRIME COMPUTER, INC.  BE LIABLE FOR ANY
  81 SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
  82 DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
  83 PROFITS, WHETHER IN ACTION OF CONTRACT, NEGLIGENCE, OR
  84 OTHER TORTIOUS ACTION, ARISING OUR OF OR IN CONNECTION
  85 WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  86 */
  87
  88 #ifndef _I386_PIC_H_
  89 #define _I386_PIC_H_
  90
  91 #include <platforms.h>
  92
  93 #define NINTR   0x10
  94 #define NPICS   0x02
  95
  96 /*
  97 ** The following are definitions used to locate the PICs in the system
  98 */
  99
 100 #define ADDR_PIC_BASE           0x20
 101 #define OFF_ICW                 0x00
 102 #define OFF_OCW                 0x01
 103 #define SIZE_PIC                0x80
 104
 105 /*
 106 ** The following banks of definitions ICW1, ICW2, ICW3, and ICW4 are used
 107 ** to define the fields of the various ICWs for initialisation of the PICs
 108 */
 109
 110 /*
 111 **      ICW1
 112 */
 113
 114 #define ICW_TEMPLATE            0x10
 115
 116 #define LEVL_TRIGGER            0x08
 117 #define EDGE_TRIGGER            0x00
 118 #define ADDR_INTRVL4            0x04
 119 #define ADDR_INTRVL8            0x00
 120 #define SINGLE__MODE            0x02
 121 #define CASCADE_MODE            0x00
 122 #define ICW4__NEEDED            0x01
 123 #define NO_ICW4_NEED            0x00
 124
 125 /*
 126 **      ICW2
 127 */
 128
 129 #define PICM_VECTBASE           0x40
 130 #define PICS_VECTBASE           PICM_VECTBASE + 0x08
 131
 132 /*
 133 **      ICW3
 134 */
 135
 136 #define SLAVE_ON_IR0            0x01
 137 #define SLAVE_ON_IR1            0x02
 138 #define SLAVE_ON_IR2            0x04
 139 #define SLAVE_ON_IR3            0x08
 140 #define SLAVE_ON_IR4            0x10
 141 #define SLAVE_ON_IR5            0x20
 142 #define SLAVE_ON_IR6            0x40
 143 #define SLAVE_ON_IR7            0x80
 144
 145 #define I_AM_SLAVE_0            0x00
 146 #define I_AM_SLAVE_1            0x01
 147 #define I_AM_SLAVE_2            0x02
 148 #define I_AM_SLAVE_3            0x03
 149 #define I_AM_SLAVE_4            0x04
 150 #define I_AM_SLAVE_5            0x05
 151 #define I_AM_SLAVE_6            0x06
 152 #define I_AM_SLAVE_7            0x07
 153
 154 /*
 155 **      ICW4
 156 */
 157
 158 #define SNF_MODE_ENA            0x10
 159 #define SNF_MODE_DIS            0x00
 160 #define BUFFERD_MODE            0x08
 161 #define NONBUFD_MODE            0x00
 162 #define AUTO_EOI_MOD            0x02
 163 #define NRML_EOI_MOD            0x00
 164 #define I8086_EMM_MOD           0x01
 165 #define SET_MCS_MODE            0x00
 166
 167 /*
 168 **      OCW1
 169 */
 170 #define PICM_MASK               0xFF
 171 #define PICS_MASK               0xFF
 172 /*
 173 **      OCW2
 174 */
 175
 176 #define NON_SPEC_EOI            0x20
 177 #define SPECIFIC_EOI            0x30
 178 #define ROT_NON_SPEC            0x50
 179 #define SET_ROT_AEOI            0x40
 180 #define RSET_ROTAEOI            0x00
 181 #define ROT_SPEC_EOI            0x70
 182 #define SET_PRIORITY            0x60
 183 #define NO_OPERATION            0x20
 184
 185 #define SEND_EOI_IR0            0x00
 186 #define SEND_EOI_IR1            0x01
 187 #define SEND_EOI_IR2            0x02
 188 #define SEND_EOI_IR3            0x03
 189 #define SEND_EOI_IR4            0x04
 190 #define SEND_EOI_IR5            0x05
 191 #define SEND_EOI_IR6            0x06
 192 #define SEND_EOI_IR7            0x07
 193
 194 /*
 195 **      OCW3
 196 */
 197
 198 #define OCW_TEMPLATE            0x08
 199 #define SPECIAL_MASK            0x40
 200 #define MASK_MDE_SET            0x20
 201 #define MASK_MDE_RST            0x00
 202 #define POLL_COMMAND            0x04
 203 #define NO_POLL_CMND            0x00
 204 #define READ_NEXT_RD            0x02
 205 #define READ_IR_ONRD            0x00
 206 #define READ_IS_ONRD            0x01
 207
 208 #endif  /* _I386_PIC_H_ */