Annotation of sys/arch/amd64/include/isa_machdep.h, Revision 1.1
1.1 ! nbrk 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:
! 103: typedef void *isa_chipset_tag_t;
! 104:
! 105: struct device; /* XXX */
! 106: struct isabus_attach_args; /* XXX */
! 107:
! 108: /*
! 109: * Functions provided to machine-independent ISA code.
! 110: */
! 111: void isa_attach_hook(struct device *, struct device *,
! 112: struct isabus_attach_args *);
! 113: int isa_intr_alloc(isa_chipset_tag_t, int, int, int *);
! 114: void *isa_intr_establish(isa_chipset_tag_t ic, int irq, int type,
! 115: int level, int (*ih_fun)(void *), void *ih_arg, char *);
! 116: void isa_intr_disestablish(isa_chipset_tag_t ic, void *handler);
! 117: int 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 *);
! 119: void isa_mem_free(bus_space_tag_t, bus_space_handle_t, bus_size_t);
! 120:
! 121: int isa_intr_check(isa_chipset_tag_t, int, int);
! 122:
! 123: /*
! 124: * for ACPI code
! 125: */
! 126:
! 127: void 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:
! 134: extern 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: */
! 140: struct 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:
! 195: extern 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 */
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