osfmk/i386/pic.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * @OSF_COPYRIGHT@
  27  */
  28
  29 /*
  30  * Mach Operating System
  31  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
  32  * All Rights Reserved.
  33  *
  34  * Permission to use, copy, modify and distribute this software and its
  35  * documentation is hereby granted, provided that both the copyright
  36  * notice and this permission notice appear in all copies of the
  37  * software, derivative works or modified versions, and any portions
  38  * thereof, and that both notices appear in supporting documentation.
  39  *
  40  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  41  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  42  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  43  *
  44  * Carnegie Mellon requests users of this software to return to
  45  *
  46  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  47  *  School of Computer Science
  48  *  Carnegie Mellon University
  49  *  Pittsburgh PA 15213-3890
  50  *
  51  * any improvements or extensions that they make and grant Carnegie Mellon
  52  * the rights to redistribute these changes.
  53  */
  54 /*
  55  */
  56
  57 /*
  58 Copyright (c) 1988,1989 Prime Computer, Inc.  Natick, MA 01760
  59 All Rights Reserved.
  60
  61 Permission to use, copy, modify, and distribute this
  62 software and its documentation for any purpose and
  63 without fee is hereby granted, provided that the above
  64 copyright notice appears in all copies and that both the
  65 copyright notice and this permission notice appear in
  66 supporting documentation, and that the name of Prime
  67 Computer, Inc. not be used in advertising or publicity
  68 pertaining to distribution of the software without
  69 specific, written prior permission.
  70
  71 THIS SOFTWARE IS PROVIDED "AS IS", AND PRIME COMPUTER,
  72 INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
  73 SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  74 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  IN
  75 NO EVENT SHALL PRIME COMPUTER, INC.  BE LIABLE FOR ANY
  76 SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
  77 DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
  78 PROFITS, WHETHER IN ACTION OF CONTRACT, NEGLIGENCE, OR
  79 OTHER TORTIOUS ACTION, ARISING OUR OF OR IN CONNECTION
  80 WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  81 */
  82
  83 #ifndef _I386_PIC_H_
  84 #define _I386_PIC_H_
  85
  86 #include <platforms.h>
  87
  88 #define NINTR   0x10
  89 #define NPICS   0x02
  90
  91 /*
  92 ** The following are definitions used to locate the PICs in the system
  93 */
  94
  95 #define ADDR_PIC_BASE           0x20
  96 #define OFF_ICW                 0x00
  97 #define OFF_OCW                 0x01
  98 #define SIZE_PIC                0x80
  99
 100 /*
 101 ** The following banks of definitions ICW1, ICW2, ICW3, and ICW4 are used
 102 ** to define the fields of the various ICWs for initialisation of the PICs
 103 */
 104
 105 /*
 106 **      ICW1
 107 */
 108
 109 #define ICW_TEMPLATE            0x10
 110
 111 #define LEVL_TRIGGER            0x08
 112 #define EDGE_TRIGGER            0x00
 113 #define ADDR_INTRVL4            0x04
 114 #define ADDR_INTRVL8            0x00
 115 #define SINGLE__MODE            0x02
 116 #define CASCADE_MODE            0x00
 117 #define ICW4__NEEDED            0x01
 118 #define NO_ICW4_NEED            0x00
 119
 120 /*
 121 **      ICW2
 122 */
 123
 124 #define PICM_VECTBASE           0x40
 125 #define PICS_VECTBASE           PICM_VECTBASE + 0x08
 126
 127 /*
 128 **      ICW3
 129 */
 130
 131 #define SLAVE_ON_IR0            0x01
 132 #define SLAVE_ON_IR1            0x02
 133 #define SLAVE_ON_IR2            0x04
 134 #define SLAVE_ON_IR3            0x08
 135 #define SLAVE_ON_IR4            0x10
 136 #define SLAVE_ON_IR5            0x20
 137 #define SLAVE_ON_IR6            0x40
 138 #define SLAVE_ON_IR7            0x80
 139
 140 #define I_AM_SLAVE_0            0x00
 141 #define I_AM_SLAVE_1            0x01
 142 #define I_AM_SLAVE_2            0x02
 143 #define I_AM_SLAVE_3            0x03
 144 #define I_AM_SLAVE_4            0x04
 145 #define I_AM_SLAVE_5            0x05
 146 #define I_AM_SLAVE_6            0x06
 147 #define I_AM_SLAVE_7            0x07
 148
 149 /*
 150 **      ICW4
 151 */
 152
 153 #define SNF_MODE_ENA            0x10
 154 #define SNF_MODE_DIS            0x00
 155 #define BUFFERD_MODE            0x08
 156 #define NONBUFD_MODE            0x00
 157 #define AUTO_EOI_MOD            0x02
 158 #define NRML_EOI_MOD            0x00
 159 #define I8086_EMM_MOD           0x01
 160 #define SET_MCS_MODE            0x00
 161
 162 /*
 163 **      OCW1
 164 */
 165 #define PICM_MASK               0xFF
 166 #define PICS_MASK               0xFF
 167 /*
 168 **      OCW2
 169 */
 170
 171 #define NON_SPEC_EOI            0x20
 172 #define SPECIFIC_EOI            0x30
 173 #define ROT_NON_SPEC            0x50
 174 #define SET_ROT_AEOI            0x40
 175 #define RSET_ROTAEOI            0x00
 176 #define ROT_SPEC_EOI            0x70
 177 #define SET_PRIORITY            0x60
 178 #define NO_OPERATION            0x20
 179
 180 #define SEND_EOI_IR0            0x00
 181 #define SEND_EOI_IR1            0x01
 182 #define SEND_EOI_IR2            0x02
 183 #define SEND_EOI_IR3            0x03
 184 #define SEND_EOI_IR4            0x04
 185 #define SEND_EOI_IR5            0x05
 186 #define SEND_EOI_IR6            0x06
 187 #define SEND_EOI_IR7            0x07
 188
 189 /*
 190 **      OCW3
 191 */
 192
 193 #define OCW_TEMPLATE            0x08
 194 #define SPECIAL_MASK            0x40
 195 #define MASK_MDE_SET            0x20
 196 #define MASK_MDE_RST            0x00
 197 #define POLL_COMMAND            0x04
 198 #define NO_POLL_CMND            0x00
 199 #define READ_NEXT_RD            0x02
 200 #define READ_IR_ONRD            0x00
 201 #define READ_IS_ONRD            0x01
 202
 203 #endif  /* _I386_PIC_H_ */