osfmk/i386/pic.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * @OSF_COPYRIGHT@
  24  */
  25
  26 /*
  27  * Mach Operating System
  28  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
  29  * All Rights Reserved.
  30  *
  31  * Permission to use, copy, modify and distribute this software and its
  32  * documentation is hereby granted, provided that both the copyright
  33  * notice and this permission notice appear in all copies of the
  34  * software, derivative works or modified versions, and any portions
  35  * thereof, and that both notices appear in supporting documentation.
  36  *
  37  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  38  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  39  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  40  *
  41  * Carnegie Mellon requests users of this software to return to
  42  *
  43  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  44  *  School of Computer Science
  45  *  Carnegie Mellon University
  46  *  Pittsburgh PA 15213-3890
  47  *
  48  * any improvements or extensions that they make and grant Carnegie Mellon
  49  * the rights to redistribute these changes.
  50  */
  51 /*
  52  */
  53
  54 /*
  55 Copyright (c) 1988,1989 Prime Computer, Inc.  Natick, MA 01760
  56 All Rights Reserved.
  57
  58 Permission to use, copy, modify, and distribute this
  59 software and its documentation for any purpose and
  60 without fee is hereby granted, provided that the above
  61 copyright notice appears in all copies and that both the
  62 copyright notice and this permission notice appear in
  63 supporting documentation, and that the name of Prime
  64 Computer, Inc. not be used in advertising or publicity
  65 pertaining to distribution of the software without
  66 specific, written prior permission.
  67
  68 THIS SOFTWARE IS PROVIDED "AS IS", AND PRIME COMPUTER,
  69 INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
  70 SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  71 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  IN
  72 NO EVENT SHALL PRIME COMPUTER, INC.  BE LIABLE FOR ANY
  73 SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
  74 DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
  75 PROFITS, WHETHER IN ACTION OF CONTRACT, NEGLIGENCE, OR
  76 OTHER TORTIOUS ACTION, ARISING OUR OF OR IN CONNECTION
  77 WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  78 */
  79
  80 #ifndef _I386_PIC_H_
  81 #define _I386_PIC_H_
  82
  83 #include <platforms.h>
  84
  85 #define NINTR   0x10
  86 #define NPICS   0x02
  87
  88 /*
  89 ** The following are definitions used to locate the PICs in the system
  90 */
  91
  92 #define ADDR_PIC_BASE           0x20
  93 #define OFF_ICW                 0x00
  94 #define OFF_OCW                 0x01
  95 #define SIZE_PIC                0x80
  96
  97 /*
  98 ** The following banks of definitions ICW1, ICW2, ICW3, and ICW4 are used
  99 ** to define the fields of the various ICWs for initialisation of the PICs
 100 */
 101
 102 /*
 103 **      ICW1
 104 */
 105
 106 #define ICW_TEMPLATE            0x10
 107
 108 #define LEVL_TRIGGER            0x08
 109 #define EDGE_TRIGGER            0x00
 110 #define ADDR_INTRVL4            0x04
 111 #define ADDR_INTRVL8            0x00
 112 #define SINGLE__MODE            0x02
 113 #define CASCADE_MODE            0x00
 114 #define ICW4__NEEDED            0x01
 115 #define NO_ICW4_NEED            0x00
 116
 117 /*
 118 **      ICW2
 119 */
 120
 121 #define PICM_VECTBASE           0x40
 122 #define PICS_VECTBASE           PICM_VECTBASE + 0x08
 123
 124 /*
 125 **      ICW3
 126 */
 127
 128 #define SLAVE_ON_IR0            0x01
 129 #define SLAVE_ON_IR1            0x02
 130 #define SLAVE_ON_IR2            0x04
 131 #define SLAVE_ON_IR3            0x08
 132 #define SLAVE_ON_IR4            0x10
 133 #define SLAVE_ON_IR5            0x20
 134 #define SLAVE_ON_IR6            0x40
 135 #define SLAVE_ON_IR7            0x80
 136
 137 #define I_AM_SLAVE_0            0x00
 138 #define I_AM_SLAVE_1            0x01
 139 #define I_AM_SLAVE_2            0x02
 140 #define I_AM_SLAVE_3            0x03
 141 #define I_AM_SLAVE_4            0x04
 142 #define I_AM_SLAVE_5            0x05
 143 #define I_AM_SLAVE_6            0x06
 144 #define I_AM_SLAVE_7            0x07
 145
 146 /*
 147 **      ICW4
 148 */
 149
 150 #define SNF_MODE_ENA            0x10
 151 #define SNF_MODE_DIS            0x00
 152 #define BUFFERD_MODE            0x08
 153 #define NONBUFD_MODE            0x00
 154 #define AUTO_EOI_MOD            0x02
 155 #define NRML_EOI_MOD            0x00
 156 #define I8086_EMM_MOD           0x01
 157 #define SET_MCS_MODE            0x00
 158
 159 /*
 160 **      OCW1
 161 */
 162 #define PICM_MASK               0xFF
 163 #define PICS_MASK               0xFF
 164 /*
 165 **      OCW2
 166 */
 167
 168 #define NON_SPEC_EOI            0x20
 169 #define SPECIFIC_EOI            0x30
 170 #define ROT_NON_SPEC            0x50
 171 #define SET_ROT_AEOI            0x40
 172 #define RSET_ROTAEOI            0x00
 173 #define ROT_SPEC_EOI            0x70
 174 #define SET_PRIORITY            0x60
 175 #define NO_OPERATION            0x20
 176
 177 #define SEND_EOI_IR0            0x00
 178 #define SEND_EOI_IR1            0x01
 179 #define SEND_EOI_IR2            0x02
 180 #define SEND_EOI_IR3            0x03
 181 #define SEND_EOI_IR4            0x04
 182 #define SEND_EOI_IR5            0x05
 183 #define SEND_EOI_IR6            0x06
 184 #define SEND_EOI_IR7            0x07
 185
 186 /*
 187 **      OCW3
 188 */
 189
 190 #define OCW_TEMPLATE            0x08
 191 #define SPECIAL_MASK            0x40
 192 #define MASK_MDE_SET            0x20
 193 #define MASK_MDE_RST            0x00
 194 #define POLL_COMMAND            0x04
 195 #define NO_POLL_CMND            0x00
 196 #define READ_NEXT_RD            0x02
 197 #define READ_IR_ONRD            0x00
 198 #define READ_IS_ONRD            0x01
 199
 200 #endif  /* _I386_PIC_H_ */