/* $OpenBSD: isa_machdep.h,v 1.25 2009/08/22 02:54:50 mk Exp $ */ /* $NetBSD: isa_machdep.h,v 1.7 1997/06/06 23:28:42 thorpej Exp $ */ /*- * Copyright (c) 1996, 1997 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility, * NASA Ames Research Center. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /*- * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * William Jolitz. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)isa.h 5.7 (Berkeley) 5/9/91 */ /* * Various pieces of the i386 port want to include this file without * or in spite of using isavar.h, and should be fixed. */ #ifndef _I386_ISA_MACHDEP_H_ /* XXX */ #define _I386_ISA_MACHDEP_H_ /* XXX */ #include /* * ISA can only DMA to 0-16M. */ #define ISA_DMA_BOUNCE_THRESHOLD 0x00ffffff /* * XXX THIS FILE IS A MESS. copyright: berkeley's probably. * contents from isavar.h and isareg.h, mostly the latter. * perhaps charles's? * * copyright from berkeley's isa.h which is now dev/isa/isareg.h. */ /* * Types provided to machine-independent ISA code. */ typedef void *isa_chipset_tag_t; struct device; /* XXX */ struct isabus_attach_args; /* XXX */ /* * Functions provided to machine-independent ISA code. */ void isa_attach_hook(struct device *, struct device *, struct isabus_attach_args *); int isa_intr_alloc(isa_chipset_tag_t, int, int, int *); int isa_intr_check(isa_chipset_tag_t, int, int); void *isa_intr_establish(isa_chipset_tag_t ic, int irq, int type, int level, int (*ih_fun)(void *), void *ih_arg, const char *ih_what); void isa_intr_disestablish(isa_chipset_tag_t ic, void *handler); /* * ALL OF THE FOLLOWING ARE MACHINE-DEPENDENT, AND SHOULD NOT BE USED * BY PORTABLE CODE. */ extern struct bus_dma_tag isa_bus_dma_tag; /* * Cookie used by ISA dma. A pointer to one of these it stashed in * the DMA map. */ struct isa_dma_cookie { int id_flags; /* flags; see below */ void *id_origbuf; /* pointer to orig buffer if bouncing */ bus_size_t id_origbuflen; /* ...and size */ void *id_bouncebuf; /* pointer to the bounce buffer */ bus_size_t id_bouncebuflen; /* ...and size */ int id_nbouncesegs; /* number of valid bounce segs */ bus_dma_segment_t id_bouncesegs[0]; /* array of bounce buffer physical memory segments */ }; /* id_flags */ #define ID_MIGHT_NEED_BOUNCE 0x01 /* map could need bounce buffers */ #define ID_HAS_BOUNCE 0x02 /* map currently has bounce buffers */ #define ID_IS_BOUNCING 0x04 /* map is bouncing current xfer */ /* * XXX Various seemingly PC-specific constants, some of which may be * unnecessary anyway. */ /* * RAM Physical Address Space (ignoring the above mentioned "hole") */ #define RAM_BEGIN 0x0000000 /* Start of RAM Memory */ #define RAM_END 0x1000000 /* End of RAM Memory */ #define RAM_SIZE (RAM_END - RAM_BEGIN) /* * Oddball Physical Memory Addresses */ #define COMPAQ_RAMRELOC 0x80c00000 /* Compaq RAM relocation/diag */ #define COMPAQ_RAMSETUP 0x80c00002 /* Compaq RAM setup */ #define WEITEK_FPU 0xC0000000 /* WTL 2167 */ #define CYRIX_EMC 0xC0000000 /* Cyrix EMC */ /* * stuff that used to be in pccons.c */ #define MONO_BUF 0xB0000 #define CGA_BUF 0xB8000 #define IOPHYSMEM 0xA0000 /* * ISA DMA bounce buffers. * XXX should be made partially machine- and bus-mapping-independent. * * DMA_BOUNCE is the number of pages of low-addressed physical memory * to acquire for ISA bounce buffers. If physical memory below 16 MB * then DMA_BOUNCE_LOW will be used. * * isaphysmem is the address of this physical contiguous low memory. * isaphysmempgs is the number of pages allocated. */ #ifndef DMA_BOUNCE #define DMA_BOUNCE 48 /* number of pages if memory > 16M */ #endif #ifndef DMA_BOUNCE_LOW #define DMA_BOUNCE_LOW 16 /* number of pages if memory <= 16M */ #endif extern vaddr_t isaphysmem; extern int isaphysmempgs; /* * Variables and macros to deal with the ISA I/O hole. * XXX These should be converted to machine- and bus-mapping-independent * function definitions, invoked through the softc. */ extern u_long atdevbase; /* kernel virtual address of "hole" */ /* * Given a kernel virtual address for some location * in the "hole" I/O space, return a physical address. */ #define ISA_PHYSADDR(v) ((void *) ((u_long)(v) - atdevbase + IOM_BEGIN)) /* * Given a physical address in the "hole", * return a kernel virtual address. */ #define ISA_HOLE_VADDR(p) ((void *) ((u_long)(p) - IOM_BEGIN + atdevbase)) #endif /* _I386_ISA_MACHDEP_H_ XXX */