Annotation of sys/arch/hp300/dev/dioreg.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: dioreg.h,v 1.4 2007/01/07 15:12:19 miod Exp $ */
! 2: /* $NetBSD: dioreg.h,v 1.3 1997/01/30 09:18:40 thorpej Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 1996 The NetBSD Foundation, Inc.
! 6: * All rights reserved.
! 7: *
! 8: * This code is derived from software contributed to The NetBSD Foundation
! 9: * by Jason R. Thorpe.
! 10: *
! 11: * Portions of this file are derived from software contributed to Berkeley
! 12: * by the Systems Programming Group of the University of Utah Computer
! 13: * Science Department.
! 14: *
! 15: * Redistribution and use in source and binary forms, with or without
! 16: * modification, are permitted provided that the following conditions
! 17: * are met:
! 18: * 1. Redistributions of source code must retain the above copyright
! 19: * notice, this list of conditions and the following disclaimer.
! 20: * 2. Redistributions in binary form must reproduce the above copyright
! 21: * notice, this list of conditions and the following disclaimer in the
! 22: * documentation and/or other materials provided with the distribution.
! 23: * 3. All advertising materials mentioning features or use of this software
! 24: * must display the following acknowledgement:
! 25: * This product includes software developed by the NetBSD
! 26: * Foundation, Inc. and its contributors.
! 27: * 4. Neither the name of The NetBSD Foundation nor the names of its
! 28: * contributors may be used to endorse or promote products derived
! 29: * from this software without specific prior written permission.
! 30: *
! 31: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 32: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 33: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 34: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
! 35: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 36: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 37: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 38: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 39: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 40: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 41: * POSSIBILITY OF SUCH DAMAGE.
! 42: */
! 43:
! 44: /*
! 45: * Register definitions for the DIO and DIO-II bus.
! 46: */
! 47:
! 48: /*
! 49: * DIO/DIO-II device registers, offsets from base of device. All
! 50: * registers are 8-bit.
! 51: */
! 52: #define DIO_IDOFF 0x01 /* primary device id */
! 53: #define DIO_IPLOFF 0x03 /* interrupt level */
! 54: #define DIO_SECIDOFF 0x15 /* secondary device id */
! 55: #define DIOII_SIZEOFF 0x101 /* device size */
! 56:
! 57: /*
! 58: * System physical addresses of some `special' DIO devices.
! 59: */
! 60: #define DIO_IHPIBADDR 0x478000 /* internal HP-IB; select code 7 */
! 61:
! 62: /*
! 63: * DIO ranges from select codes 0-63 at physical addresses given by:
! 64: * 0x600000 + (sc - 32) * 0x10000
! 65: * DIO cards are addressed in the range 0-31 [0x600000-0x800000) for
! 66: * their control space and the remaining areas, [0x200000-0x400000) and
! 67: * [0x800000-0x1000000), are for additional space required by a card;
! 68: * e.g. a display framebuffer.
! 69: *
! 70: * DIO-II ranges from select codes 132-255 at physical addresses given by:
! 71: * 0x1000000 + (sc - 132) * 0x400000
! 72: * The address range of DIO-II space is thus [0x1000000-0x20000000).
! 73: *
! 74: * DIO/DIO-II space is too large to map in its entirety, instead devices
! 75: * are mapped into kernel virtual address space allocated from a range
! 76: * of EIOMAPSIZE pages (vmparam.h) starting at ``extiobase''.
! 77: */
! 78: #define DIO_BASE 0x600000 /* start of DIO space */
! 79: #define DIO_END 0x1000000 /* end of DIO space */
! 80: #define DIO_DEVSIZE 0x10000 /* size of a DIO device */
! 81:
! 82: #define DIOII_BASE 0x01000000 /* start of DIO-II space */
! 83: #define DIOII_END 0x20000000 /* end of DIO-II space */
! 84: #define DIOII_DEVSIZE 0x00400000 /* size of a DIO-II device */
! 85:
! 86: /*
! 87: * Find the highest select code for a given machine; HP320 doesn't
! 88: * have DIO-II.
! 89: */
! 90: #if defined(HP320)
! 91: #define DIO_SCMAX(machineid) ((machineid) == HP_320 ? 32 : 256)
! 92: #else
! 93: #define DIO_SCMAX(machineid) 256
! 94: #endif
! 95:
! 96: /*
! 97: * Base of DIO-II select codes.
! 98: */
! 99: #define DIOII_SCBASE 132
! 100:
! 101: /*
! 102: * Macro that returns true if a select code lies within
! 103: * the select code `hole'.
! 104: */
! 105: #define DIO_INHOLE(scode) ((scode) >= 32 && (scode) < DIOII_SCBASE)
! 106:
! 107: /*
! 108: * Macros to determine if device is DIO or DIO-II.
! 109: */
! 110: #define DIO_ISDIO(scode) ((scode) >= 0 && (scode) < 32)
! 111: #define DIO_ISDIOII(scode) ((scode) >= DIOII_SCBASE && (scode) < 256)
! 112:
! 113: /*
! 114: * Macro to determine if device is a framebuffer, given the
! 115: * primary id of the device. We key off this to determine if
! 116: * we should look at secondary id and ignore interrupt level.
! 117: */
! 118: #define DIO_ISFRAMEBUFFER(id) \
! 119: ((id) == DIO_DEVICE_ID_FRAMEBUFFER)
! 120:
! 121: /*
! 122: * Macro to extract primary and decondary device ids, given
! 123: * the base address of the device.
! 124: */
! 125: #define DIO_ID(base) \
! 126: (*((u_int8_t *)((u_long)(base) + DIO_IDOFF)))
! 127: #define DIO_SECID(base) \
! 128: (*((u_int8_t *)((u_long)(base) + DIO_SECIDOFF)))
! 129:
! 130: /*
! 131: * Macro to extract the interrupt level, given the
! 132: * base address of the device.
! 133: */
! 134: #define DIO_IPL(base) \
! 135: ((((*((u_int8_t *)((u_long)(base) + DIO_IPLOFF))) >> 4) & 0x03) + 3)
! 136:
! 137: /*
! 138: * Macro to compute the size of a DIO-II device's address
! 139: * space, given the base address of the device.
! 140: */
! 141: #define DIOII_SIZE(base) \
! 142: ((int)((*((u_int8_t *)((u_long)(base) + DIOII_SIZEOFF)) + 1) \
! 143: * 0x100000))
! 144:
! 145: /*
! 146: * Given a select code and device base address, compute
! 147: * the size of the DIO/DIO-II device.
! 148: */
! 149: #define DIO_SIZE(scode, base) \
! 150: (DIO_ISDIOII((scode)) ? DIOII_SIZE((base)) : DIO_DEVSIZE)
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