osfmk/i386/pic.h

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