isa_machdep.h revision 1.14
1/* $NetBSD: isa_machdep.h,v 1.7 1997/06/06 23:28:42 thorpej Exp $ */ 2 3/*- 4 * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, 9 * NASA Ames Research Center. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40/*- 41 * Copyright (c) 1990 The Regents of the University of California. 42 * All rights reserved. 43 * 44 * This code is derived from software contributed to Berkeley by 45 * William Jolitz. 46 * 47 * Redistribution and use in source and binary forms, with or without 48 * modification, are permitted provided that the following conditions 49 * are met: 50 * 1. Redistributions of source code must retain the above copyright 51 * notice, this list of conditions and the following disclaimer. 52 * 2. Redistributions in binary form must reproduce the above copyright 53 * notice, this list of conditions and the following disclaimer in the 54 * documentation and/or other materials provided with the distribution. 55 * 3. All advertising materials mentioning features or use of this software 56 * must display the following acknowledgement: 57 * This product includes software developed by the University of 58 * California, Berkeley and its contributors. 59 * 4. Neither the name of the University nor the names of its contributors 60 * may be used to endorse or promote products derived from this software 61 * without specific prior written permission. 62 * 63 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 64 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 65 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 66 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 67 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 68 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 69 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 70 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 71 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 72 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 73 * SUCH DAMAGE. 74 * 75 * @(#)isa.h 5.7 (Berkeley) 5/9/91 76 */ 77 78/* 79 * Various pieces of the i386 port want to include this file without 80 * or in spite of using isavar.h, and should be fixed. 81 */ 82 83#ifndef _I386_ISA_MACHDEP_H_ /* XXX */ 84#define _I386_ISA_MACHDEP_H_ /* XXX */ 85 86#include <machine/bus.h> 87 88/* 89 * XXX THIS FILE IS A MESS. copyright: berkeley's probably. 90 * contents from isavar.h and isareg.h, mostly the latter. 91 * perhaps charles's? 92 * 93 * copyright from berkeley's isa.h which is now dev/isa/isareg.h. 94 */ 95 96/* 97 * Types provided to machine-independent ISA code. 98 */ 99typedef void *isa_chipset_tag_t; 100 101struct device; /* XXX */ 102struct isabus_attach_args; /* XXX */ 103 104/* 105 * Functions provided to machine-independent ISA code. 106 */ 107void isa_attach_hook __P((struct device *, struct device *, 108 struct isabus_attach_args *)); 109int isa_intr_alloc __P((isa_chipset_tag_t, int, int, int *)); 110int isa_intr_check __P((isa_chipset_tag_t, int, int)); 111void *isa_intr_establish __P((isa_chipset_tag_t ic, int irq, int type, 112 int level, int (*ih_fun)(void *), void *ih_arg, char *ih_what)); 113void isa_intr_disestablish __P((isa_chipset_tag_t ic, void *handler)); 114 115/* 116 * ALL OF THE FOLLOWING ARE MACHINE-DEPENDENT, AND SHOULD NOT BE USED 117 * BY PORTABLE CODE. 118 */ 119 120extern struct i386_bus_dma_tag isa_bus_dma_tag; 121 122/* 123 * Cookie used by ISA dma. A pointer to one of these it stashed in 124 * the DMA map. 125 */ 126struct i386_isa_dma_cookie { 127 int id_flags; /* flags; see below */ 128 129 void *id_origbuf; /* pointer to orig buffer if 130 bouncing */ 131 bus_size_t id_origbuflen; /* ...and size */ 132 133 void *id_bouncebuf; /* pointer to the bounce buffer */ 134 bus_size_t id_bouncebuflen; /* ...and size */ 135 int id_nbouncesegs; /* number of valid bounce segs */ 136 bus_dma_segment_t id_bouncesegs[0]; /* array of bounce buffer 137 physical memory segments */ 138}; 139 140/* id_flags */ 141#define ID_MIGHT_NEED_BOUNCE 0x01 /* map could need bounce buffers */ 142#define ID_HAS_BOUNCE 0x02 /* map currently has bounce buffers */ 143#define ID_IS_BOUNCING 0x04 /* map is bouncing current xfer */ 144 145/* 146 * XXX Various seemingly PC-specific constants, some of which may be 147 * unnecessary anyway. 148 */ 149 150/* 151 * RAM Physical Address Space (ignoring the above mentioned "hole") 152 */ 153#define RAM_BEGIN 0x0000000 /* Start of RAM Memory */ 154#define RAM_END 0x1000000 /* End of RAM Memory */ 155#define RAM_SIZE (RAM_END - RAM_BEGIN) 156 157/* 158 * Oddball Physical Memory Addresses 159 */ 160#define COMPAQ_RAMRELOC 0x80c00000 /* Compaq RAM relocation/diag */ 161#define COMPAQ_RAMSETUP 0x80c00002 /* Compaq RAM setup */ 162#define WEITEK_FPU 0xC0000000 /* WTL 2167 */ 163#define CYRIX_EMC 0xC0000000 /* Cyrix EMC */ 164 165/* 166 * stuff that used to be in pccons.c 167 */ 168#define MONO_BUF 0xB0000 169#define CGA_BUF 0xB8000 170#define IOPHYSMEM 0xA0000 171 172 173/* 174 * ISA DMA bounce buffers. 175 * XXX should be made partially machine- and bus-mapping-independent. 176 * 177 * DMA_BOUNCE is the number of pages of low-addressed physical memory 178 * to acquire for ISA bounce buffers. If physical memory below 16 MB 179 * then DMA_BOUNCE_LOW will be used. 180 * 181 * isaphysmem is the address of this physical contiguous low memory. 182 * isaphysmempgs is the number of pages allocated. 183 */ 184 185#ifndef DMA_BOUNCE 186#define DMA_BOUNCE 48 /* number of pages if memory > 16M */ 187#endif 188 189#ifndef DMA_BOUNCE_LOW 190#define DMA_BOUNCE_LOW 16 /* number of pages if memory <= 16M */ 191#endif 192 193extern vm_offset_t isaphysmem; 194extern int isaphysmempgs; 195 196 197/* 198 * Variables and macros to deal with the ISA I/O hole. 199 * XXX These should be converted to machine- and bus-mapping-independent 200 * function definitions, invoked through the softc. 201 */ 202 203extern u_long atdevbase; /* kernel virtual address of "hole" */ 204 205/* 206 * Given a kernel virtual address for some location 207 * in the "hole" I/O space, return a physical address. 208 */ 209#define ISA_PHYSADDR(v) ((void *) ((u_long)(v) - atdevbase + IOM_BEGIN)) 210 211/* 212 * Given a physical address in the "hole", 213 * return a kernel virtual address. 214 */ 215#define ISA_HOLE_VADDR(p) ((void *) ((u_long)(p) - IOM_BEGIN + atdevbase)) 216 217 218/* 219 * Miscellanous functions. 220 */ 221void sysbeep __P((int, int)); /* beep with the system speaker */ 222 223#endif /* _I386_ISA_MACHDEP_H_ XXX */ 224