2e0e8fc49d
wrap the various uses of the chip (including the uses of the NVRAM on it) around the new defintions, structures, and functions specified in the header.
138 lines
4.3 KiB
C
138 lines
4.3 KiB
C
/* $NetBSD: isa_machdep.h,v 1.4 1995/05/04 19:39:46 cgd Exp $ */
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/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)isa.h 5.7 (Berkeley) 5/9/91
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*/
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/*
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* XXX THIS FILE IS A MESS. copyright: berkeley's probably.
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* contents from isavar.h and isareg.h, mostly the latter.
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* perhaps charles's?
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*
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* copyright from berkeley's isa.h which is now dev/isa/isareg.h.
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*/
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/*
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* XXX Various seemingly PC-specific constants, some of which may be
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* unnecessary anyway.
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*/
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/*
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* RAM Physical Address Space (ignoring the above mentioned "hole")
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*/
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#define RAM_BEGIN 0x0000000 /* Start of RAM Memory */
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#define RAM_END 0x1000000 /* End of RAM Memory */
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#define RAM_SIZE (RAM_END - RAM_BEGIN)
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/*
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* Oddball Physical Memory Addresses
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*/
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#define COMPAQ_RAMRELOC 0x80c00000 /* Compaq RAM relocation/diag */
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#define COMPAQ_RAMSETUP 0x80c00002 /* Compaq RAM setup */
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#define WEITEK_FPU 0xC0000000 /* WTL 2167 */
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#define CYRIX_EMC 0xC0000000 /* Cyrix EMC */
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/*
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* stuff that used to be in pccons.c
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*/
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#define MONO_BASE 0x3B4
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#define MONO_BUF 0xB0000
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#define CGA_BASE 0x3D4
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#define CGA_BUF 0xB8000
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#define IOPHYSMEM 0xA0000
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/*
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* Interrupt handler chains. isa_intr_establish() inserts a handler into
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* the list. The handler is called with its (single) argument.
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*/
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struct intrhand {
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int (*ih_fun)();
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void *ih_arg;
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u_long ih_count;
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struct intrhand *ih_next;
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int ih_level;
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int ih_irq;
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};
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/*
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* ISA DMA bounce buffers.
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* XXX should be made partially machine- and bus-mapping-independent.
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*
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* DMA_BOUNCE is the number of pages of low-addressed physical memory
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* to acquire for ISA bounce buffers.
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*
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* isaphysmem is the location of those bounce buffers. (They are currently
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* assumed to be contiguous.
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*/
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#ifndef DMA_BOUNCE
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#define DMA_BOUNCE 8 /* one buffer per channel */
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#endif
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extern vm_offset_t isaphysmem;
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/*
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* Variables and macros to deal with the ISA I/O hole.
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* XXX These should be converted to machine- and bus-mapping-independent
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* function definitions, invoked through the softc.
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*/
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extern u_long atdevbase; /* kernel virtual address of "hole" */
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/*
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* Given a kernel virtual address for some location
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* in the "hole" I/O space, return a physical address.
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*/
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#define ISA_PHYSADDR(v) ((void *) ((u_long)(v) - atdevbase + IOM_BEGIN))
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/*
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* Given a physical address in the "hole",
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* return a kernel virtual address.
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*/
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#define ISA_HOLE_VADDR(p) ((void *) ((u_long)(p) - IOM_BEGIN + atdevbase))
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/*
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* Miscellanous functions.
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*/
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void sysbeep __P((int, int)); /* beep with the system speaker */
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