usr/src/uts/common/sys/pic.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1990, 1991 UNIX System Laboratories, Inc. */
  28 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989, 1990 AT&T   */
  29 /*        All Rights Reserved   */
  30
  31 #ifndef _SYS_PIC_H
  32 #define _SYS_PIC_H
  33
  34 #pragma ident   "%Z%%M% %I%     %E% SMI"
  35
  36 #include <sys/avintr.h>
  37
  38 #ifdef  __cplusplus
  39 extern "C" {
  40 #endif
  41
  42 /* Definitions for 8259 Programmable Interrupt Controller */
  43
  44 #define PIC_NEEDICW4    0x01            /* ICW4 needed */
  45 #define PIC_ICW1BASE    0x10            /* base for ICW1 */
  46 #define PIC_LTIM        0x08            /* level-triggered mode */
  47 #define PIC_86MODE      0x01            /* MCS 86 mode */
  48 #define PIC_AUTOEOI     0x02            /* do auto eoi's */
  49 #define PIC_SLAVEBUF    0x08            /* put slave in buffered mode */
  50 #define PIC_MASTERBUF   0x0C            /* put master in buffered mode */
  51 #define PIC_SPFMODE     0x10            /* special fully nested mode */
  52 #define PIC_READISR     0x0B            /* Read the ISR */
  53 #define PIC_READIRR     0x0A            /* Read the IRR */
  54 #define PIC_NSEOI       0x20            /* Non-specific EOI command */
  55 #define PIC_SEOI        0x60            /* specific EOI command */
  56 #define PIC_SEOI_LVL7   (PIC_SEOI | 0x7)        /* specific EOI for level 7 */
  57
  58 #if defined(__i386) || defined(__amd64)
  59 #define PIC_VECTBASE    0x20            /* Vectors for external interrupts */
  60                                         /* start at 32. */
  61 #endif  /* __i386 || __amd64 */
  62
  63 /*
  64  * Interrupt configuration information specific to a particular computer.
  65  * These constants are used to initialize tables in modules/pic/space.c.
  66  * NOTE: The master pic must always be pic zero.
  67  */
  68
  69 #define NPIC            2               /* 2 PICs */
  70 /* Port addresses */
  71 #define MCMD_PORT       0x20            /* master command port */
  72 #define MIMR_PORT       0x21            /* master intr mask register port */
  73 #define SCMD_PORT       0xA0            /* slave command port */
  74 #define SIMR_PORT       0xA1            /* slave intr mask register port */
  75 #define MASTERLINE      0x02            /* slave on IR2 of master PIC */
  76 #define SLAVEBASE       8               /* slave IR0 interrupt number */
  77 #define PICBUFFERED     0               /* PICs not in buffered mode */
  78
  79 struct standard_pic {
  80         short c_npic;
  81         uchar_t c_curmask[NPIC];
  82         uchar_t c_iplmask[MAXIPL*NPIC];
  83 };
  84
  85 #define CLOCK_VECTOR    0       /* line at which clock interrupt comes */
  86
  87 #ifdef  __cplusplus
  88 }
  89 #endif
  90
  91 #endif /* _SYS_PIC_H */