osfmk/i386/pic.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_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. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  * @OSF_COPYRIGHT@
  30  */
  31
  32 /*
  33  * Mach Operating System
  34  * Copyright (c) 1991,1990,1989 Carnegie Mellon University
  35  * All Rights Reserved.
  36  *
  37  * Permission to use, copy, modify and distribute this software and its
  38  * documentation is hereby granted, provided that both the copyright
  39  * notice and this permission notice appear in all copies of the
  40  * software, derivative works or modified versions, and any portions
  41  * thereof, and that both notices appear in supporting documentation.
  42  *
  43  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  44  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
  45  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  46  *
  47  * Carnegie Mellon requests users of this software to return to
  48  *
  49  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  50  *  School of Computer Science
  51  *  Carnegie Mellon University
  52  *  Pittsburgh PA 15213-3890
  53  *
  54  * any improvements or extensions that they make and grant Carnegie Mellon
  55  * the rights to redistribute these changes.
  56  */
  57 /*
  58  */
  59
  60 /*
  61 Copyright (c) 1988,1989 Prime Computer, Inc.  Natick, MA 01760
  62 All Rights Reserved.
  63
  64 Permission to use, copy, modify, and distribute this
  65 software and its documentation for any purpose and
  66 without fee is hereby granted, provided that the above
  67 copyright notice appears in all copies and that both the
  68 copyright notice and this permission notice appear in
  69 supporting documentation, and that the name of Prime
  70 Computer, Inc. not be used in advertising or publicity
  71 pertaining to distribution of the software without
  72 specific, written prior permission.
  73
  74 THIS SOFTWARE IS PROVIDED "AS IS", AND PRIME COMPUTER,
  75 INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
  76 SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  77 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  IN
  78 NO EVENT SHALL PRIME COMPUTER, INC.  BE LIABLE FOR ANY
  79 SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
  80 DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
  81 PROFITS, WHETHER IN ACTION OF CONTRACT, NEGLIGENCE, OR
  82 OTHER TORTIOUS ACTION, ARISING OUR OF OR IN CONNECTION
  83 WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  84 */
  85
  86 #ifndef _I386_PIC_H_
  87 #define _I386_PIC_H_
  88
  89 #include <platforms.h>
  90
  91 #define NINTR   0x10
  92 #define NPICS   0x02
  93
  94 /*
  95 ** The following are definitions used to locate the PICs in the system
  96 */
  97
  98 #define ADDR_PIC_BASE           0x20
  99 #define OFF_ICW                 0x00
 100 #define OFF_OCW                 0x01
 101 #define SIZE_PIC                0x80
 102
 103 /*
 104 ** The following banks of definitions ICW1, ICW2, ICW3, and ICW4 are used
 105 ** to define the fields of the various ICWs for initialisation of the PICs
 106 */
 107
 108 /*
 109 **      ICW1
 110 */
 111
 112 #define ICW_TEMPLATE            0x10
 113
 114 #define LEVL_TRIGGER            0x08
 115 #define EDGE_TRIGGER            0x00
 116 #define ADDR_INTRVL4            0x04
 117 #define ADDR_INTRVL8            0x00
 118 #define SINGLE__MODE            0x02
 119 #define CASCADE_MODE            0x00
 120 #define ICW4__NEEDED            0x01
 121 #define NO_ICW4_NEED            0x00
 122
 123 /*
 124 **      ICW2
 125 */
 126
 127 #define PICM_VECTBASE           0x40
 128 #define PICS_VECTBASE           PICM_VECTBASE + 0x08
 129
 130 /*
 131 **      ICW3
 132 */
 133
 134 #define SLAVE_ON_IR0            0x01
 135 #define SLAVE_ON_IR1            0x02
 136 #define SLAVE_ON_IR2            0x04
 137 #define SLAVE_ON_IR3            0x08
 138 #define SLAVE_ON_IR4            0x10
 139 #define SLAVE_ON_IR5            0x20
 140 #define SLAVE_ON_IR6            0x40
 141 #define SLAVE_ON_IR7            0x80
 142
 143 #define I_AM_SLAVE_0            0x00
 144 #define I_AM_SLAVE_1            0x01
 145 #define I_AM_SLAVE_2            0x02
 146 #define I_AM_SLAVE_3            0x03
 147 #define I_AM_SLAVE_4            0x04
 148 #define I_AM_SLAVE_5            0x05
 149 #define I_AM_SLAVE_6            0x06
 150 #define I_AM_SLAVE_7            0x07
 151
 152 /*
 153 **      ICW4
 154 */
 155
 156 #define SNF_MODE_ENA            0x10
 157 #define SNF_MODE_DIS            0x00
 158 #define BUFFERD_MODE            0x08
 159 #define NONBUFD_MODE            0x00
 160 #define AUTO_EOI_MOD            0x02
 161 #define NRML_EOI_MOD            0x00
 162 #define I8086_EMM_MOD           0x01
 163 #define SET_MCS_MODE            0x00
 164
 165 /*
 166 **      OCW1
 167 */
 168 #define PICM_MASK               0xFF
 169 #define PICS_MASK               0xFF
 170 /*
 171 **      OCW2
 172 */
 173
 174 #define NON_SPEC_EOI            0x20
 175 #define SPECIFIC_EOI            0x30
 176 #define ROT_NON_SPEC            0x50
 177 #define SET_ROT_AEOI            0x40
 178 #define RSET_ROTAEOI            0x00
 179 #define ROT_SPEC_EOI            0x70
 180 #define SET_PRIORITY            0x60
 181 #define NO_OPERATION            0x20
 182
 183 #define SEND_EOI_IR0            0x00
 184 #define SEND_EOI_IR1            0x01
 185 #define SEND_EOI_IR2            0x02
 186 #define SEND_EOI_IR3            0x03
 187 #define SEND_EOI_IR4            0x04
 188 #define SEND_EOI_IR5            0x05
 189 #define SEND_EOI_IR6            0x06
 190 #define SEND_EOI_IR7            0x07
 191
 192 /*
 193 **      OCW3
 194 */
 195
 196 #define OCW_TEMPLATE            0x08
 197 #define SPECIAL_MASK            0x40
 198 #define MASK_MDE_SET            0x20
 199 #define MASK_MDE_RST            0x00
 200 #define POLL_COMMAND            0x04
 201 #define NO_POLL_CMND            0x00
 202 #define READ_NEXT_RD            0x02
 203 #define READ_IR_ONRD            0x00
 204 #define READ_IS_ONRD            0x01
 205
 206 #endif  /* _I386_PIC_H_ */