1 /* $OpenBSD: isa_machdep.h,v 1.19 2003/06/02 23:27:47 millert Exp $ */ 2 /* $NetBSD: isa_machdep.h,v 1.7 1997/06/06 23:28:42 thorpej Exp $ */ 3 4 /*- 5 * Copyright (c) 1996, 1997 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 85 /* 86 * XXX THIS FILE IS A MESS. copyright: berkeley's probably. 87 * contents from isavar.h and isareg.h, mostly the latter. 88 * perhaps charles's? 89 * 90 * copyright from berkeley's isa.h which is now dev/isa/isareg.h. 91 */ 92 93 /* 94 * Types provided to machine-independent ISA code. 95 */ 96 typedef void *isa_chipset_tag_t; 97 98 struct device; /* XXX */ 99 struct isabus_attach_args; /* XXX */ 100 101 /* 102 * Functions provided to machine-independent ISA code. 103 */ 104 void isa_attach_hook(struct device *, struct device *, 105 struct isabus_attach_args *); 106 int isa_intr_alloc(isa_chipset_tag_t, int, int, int *); 107 int isa_intr_check(isa_chipset_tag_t, int, int); 108 void *isa_intr_establish(isa_chipset_tag_t ic, int irq, int type, 109 int level, int (*ih_fun)(void *), void *ih_arg, char *ih_what); 110 void isa_intr_disestablish(isa_chipset_tag_t ic, void *handler); 111 112 /* 113 * ALL OF THE FOLLOWING ARE MACHINE-DEPENDENT, AND SHOULD NOT BE USED 114 * BY PORTABLE CODE. 115 */ 116 117 extern struct i386_bus_dma_tag isa_bus_dma_tag; 118 119 /* 120 * Cookie used by ISA dma. A pointer to one of these it stashed in 121 * the DMA map. 122 */ 123 struct i386_isa_dma_cookie { 124 int id_flags; /* flags; see below */ 125 126 void *id_origbuf; /* pointer to orig buffer if 127 bouncing */ 128 bus_size_t id_origbuflen; /* ...and size */ 129 130 void *id_bouncebuf; /* pointer to the bounce buffer */ 131 bus_size_t id_bouncebuflen; /* ...and size */ 132 int id_nbouncesegs; /* number of valid bounce segs */ 133 bus_dma_segment_t id_bouncesegs[0]; /* array of bounce buffer 134 physical memory segments */ 135 }; 136 137 /* id_flags */ 138 #define ID_MIGHT_NEED_BOUNCE 0x01 /* map could need bounce buffers */ 139 #define ID_HAS_BOUNCE 0x02 /* map currently has bounce buffers */ 140 #define ID_IS_BOUNCING 0x04 /* map is bouncing current xfer */ 141 142 /* 143 * XXX Various seemingly PC-specific constants, some of which may be 144 * unnecessary anyway. 145 */ 146 147 /* 148 * RAM Physical Address Space (ignoring the above mentioned "hole") 149 */ 150 #define RAM_BEGIN 0x0000000 /* Start of RAM Memory */ 151 #define RAM_END 0x1000000 /* End of RAM Memory */ 152 #define RAM_SIZE (RAM_END - RAM_BEGIN) 153 154 /* 155 * Oddball Physical Memory Addresses 156 */ 157 #define COMPAQ_RAMRELOC 0x80c00000 /* Compaq RAM relocation/diag */ 158 #define COMPAQ_RAMSETUP 0x80c00002 /* Compaq RAM setup */ 159 #define WEITEK_FPU 0xC0000000 /* WTL 2167 */ 160 #define CYRIX_EMC 0xC0000000 /* Cyrix EMC */ 161 162 /* 163 * stuff that used to be in pccons.c 164 */ 165 #define MONO_BUF 0xB0000 166 #define CGA_BUF 0xB8000 167 #define IOPHYSMEM 0xA0000 168 169 170 /* 171 * ISA DMA bounce buffers. 172 * XXX should be made partially machine- and bus-mapping-independent. 173 * 174 * DMA_BOUNCE is the number of pages of low-addressed physical memory 175 * to acquire for ISA bounce buffers. If physical memory below 16 MB 176 * then DMA_BOUNCE_LOW will be used. 177 * 178 * isaphysmem is the address of this physical contiguous low memory. 179 * isaphysmempgs is the number of pages allocated. 180 */ 181 182 #ifndef DMA_BOUNCE 183 #define DMA_BOUNCE 48 /* number of pages if memory > 16M */ 184 #endif 185 186 #ifndef DMA_BOUNCE_LOW 187 #define DMA_BOUNCE_LOW 16 /* number of pages if memory <= 16M */ 188 #endif 189 190 extern vaddr_t isaphysmem; 191 extern int isaphysmempgs; 192 193 194 /* 195 * Variables and macros to deal with the ISA I/O hole. 196 * XXX These should be converted to machine- and bus-mapping-independent 197 * function definitions, invoked through the softc. 198 */ 199 200 extern u_long atdevbase; /* kernel virtual address of "hole" */ 201 202 /* 203 * Given a kernel virtual address for some location 204 * in the "hole" I/O space, return a physical address. 205 */ 206 #define ISA_PHYSADDR(v) ((void *) ((u_long)(v) - atdevbase + IOM_BEGIN)) 207 208 /* 209 * Given a physical address in the "hole", 210 * return a kernel virtual address. 211 */ 212 #define ISA_HOLE_VADDR(p) ((void *) ((u_long)(p) - IOM_BEGIN + atdevbase)) 213 214 215 /* 216 * Miscellanous functions. 217 */ 218 void sysbeep(int, int); /* beep with the system speaker */ 219 220 #endif /* _I386_ISA_MACHDEP_H_ XXX */ 221