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/* $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 <machine/bus.h>
/*
* 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 */
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