isa_machdep.h revision 1.6
1/* $OpenBSD: isa_machdep.h,v 1.6 2006/03/01 21:51:39 deraadt Exp $ */ 2/* $NetBSD: isa_machdep.h,v 1.2 2003/05/09 23:51:28 fvdl Exp $ */ 3 4/*- 5 * Copyright (c) 1996, 1997, 1998 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 of the Numerical Aerospace Simulation Facility, 10 * NASA Ames Research Center. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the NetBSD 23 * Foundation, Inc. and its contributors. 24 * 4. Neither the name of The NetBSD Foundation nor the names of its 25 * contributors may be used to endorse or promote products derived 26 * from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 */ 40 41/*- 42 * Copyright (c) 1990 The Regents of the University of California. 43 * All rights reserved. 44 * 45 * This code is derived from software contributed to Berkeley by 46 * William Jolitz. 47 * 48 * Redistribution and use in source and binary forms, with or without 49 * modification, are permitted provided that the following conditions 50 * are met: 51 * 1. Redistributions of source code must retain the above copyright 52 * notice, this list of conditions and the following disclaimer. 53 * 2. Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in the 55 * documentation and/or other materials provided with the distribution. 56 * 3. Neither the name of the University nor the names of its contributors 57 * may be used to endorse or promote products derived from this software 58 * without specific prior written permission. 59 * 60 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 61 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 62 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 63 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 64 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 65 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 66 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 67 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 68 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 69 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 70 * SUCH DAMAGE. 71 * 72 * @(#)isa.h 5.7 (Berkeley) 5/9/91 73 */ 74 75/* 76 * Various pieces of the i386 port want to include this file without 77 * or in spite of using isavar.h, and should be fixed. 78 */ 79 80#ifndef _I386_ISA_MACHDEP_H_ /* XXX */ 81#define _I386_ISA_MACHDEP_H_ /* XXX */ 82 83#include <machine/bus.h> 84#include <dev/isa/isadmavar.h> 85 86/* 87 * ISA can only DMA to 0-16M. 88 */ 89#define ISA_DMA_BOUNCE_THRESHOLD 0x00ffffff 90 91/* 92 * XXX THIS FILE IS A MESS. copyright: berkeley's probably. 93 * contents from isavar.h and isareg.h, mostly the latter. 94 * perhaps charles's? 95 * 96 * copyright from berkeley's isa.h which is now dev/isa/isareg.h. 97 */ 98 99/* 100 * Types provided to machine-independent ISA code. 101 */ 102 103typedef void *isa_chipset_tag_t; 104 105struct device; /* XXX */ 106struct isabus_attach_args; /* XXX */ 107 108/* 109 * Functions provided to machine-independent ISA code. 110 */ 111void isa_attach_hook(struct device *, struct device *, 112 struct isabus_attach_args *); 113int isa_intr_alloc(isa_chipset_tag_t, int, int, int *); 114void *isa_intr_establish(isa_chipset_tag_t ic, int irq, int type, 115 int level, int (*ih_fun)(void *), void *ih_arg, char *); 116void isa_intr_disestablish(isa_chipset_tag_t ic, void *handler); 117int isa_mem_alloc(bus_space_tag_t, bus_size_t, bus_size_t, 118 bus_addr_t, int, bus_addr_t *, bus_space_handle_t *); 119void isa_mem_free(bus_space_tag_t, bus_space_handle_t, bus_size_t); 120 121int isa_intr_check(isa_chipset_tag_t, int, int); 122 123/* 124 * for ACPI code 125 */ 126 127void isa_reinit_irq(void); 128 129/* 130 * ALL OF THE FOLLOWING ARE MACHINE-DEPENDENT, AND SHOULD NOT BE USED 131 * BY PORTABLE CODE. 132 */ 133 134extern struct x86_bus_dma_tag isa_bus_dma_tag; 135 136/* 137 * Cookie used by ISA dma. A pointer to one of these it stashed in 138 * the DMA map. 139 */ 140struct x86_isa_dma_cookie { 141 int id_flags; /* flags; see below */ 142 143 void *id_origbuf; /* pointer to orig buffer if 144 bouncing */ 145 bus_size_t id_origbuflen; /* ...and size */ 146 147 void *id_bouncebuf; /* pointer to the bounce buffer */ 148 bus_size_t id_bouncebuflen; /* ...and size */ 149 int id_nbouncesegs; /* number of valid bounce segs */ 150 bus_dma_segment_t id_bouncesegs[0]; /* array of bounce buffer 151 physical memory segments */ 152}; 153 154/* id_flags */ 155#define ID_MIGHT_NEED_BOUNCE 0x01 /* map could need bounce buffers */ 156#define ID_HAS_BOUNCE 0x02 /* map currently has bounce buffers */ 157#define ID_IS_BOUNCING 0x04 /* map is bouncing current xfer */ 158 159 160 161/* 162 * XXX Various seemingly PC-specific constants, some of which may be 163 * unnecessary anyway. 164 */ 165 166/* 167 * RAM Physical Address Space (ignoring the above mentioned "hole") 168 */ 169#define RAM_BEGIN 0x0000000 /* Start of RAM Memory */ 170#define RAM_END 0x1000000 /* End of RAM Memory */ 171#define RAM_SIZE (RAM_END - RAM_BEGIN) 172 173/* 174 * Oddball Physical Memory Addresses 175 */ 176#define COMPAQ_RAMRELOC 0x80c00000 /* Compaq RAM relocation/diag */ 177#define COMPAQ_RAMSETUP 0x80c00002 /* Compaq RAM setup */ 178#define WEITEK_FPU 0xC0000000 /* WTL 2167 */ 179#define CYRIX_EMC 0xC0000000 /* Cyrix EMC */ 180 181/* 182 * stuff that used to be in pccons.c 183 */ 184#define MONO_BASE 0x3B4 185#define MONO_BUF 0xB0000 186#define CGA_BASE 0x3D4 187#define CGA_BUF 0xB8000 188 189/* 190 * Variables and macros to deal with the ISA I/O hole. 191 * XXX These should be converted to machine- and bus-mapping-independent 192 * function definitions, invoked through the softc. 193 */ 194 195extern u_long atdevbase; /* kernel virtual address of "hole" */ 196 197/* 198 * Given a kernel virtual address for some location 199 * in the "hole" I/O space, return a physical address. 200 */ 201#define ISA_PHYSADDR(v) ((void *) ((u_long)(v) - atdevbase + IOM_BEGIN)) 202 203/* 204 * Given a physical address in the "hole", 205 * return a kernel virtual address. 206 */ 207#define ISA_HOLE_VADDR(p) ((void *) ((u_long)(p) - IOM_BEGIN + atdevbase)) 208 209#endif /* _I386_ISA_MACHDEP_H_ XXX */ 210