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/* $OpenBSD: isavar.h,v 1.10 1996/05/10 12:37:45 deraadt Exp $ */
/* $NetBSD: isavar.h,v 1.22 1996/05/05 01:14:14 thorpej Exp $ */
/*
* Copyright (c) 1995 Chris G. Demetriou
* Copyright (c) 1992 Berkeley Software Design, Inc.
* All rights reserved.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Berkeley Software
* Design, Inc.
* 4. The name of Berkeley Software Design must not be used to endorse
* or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN, INC. ``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 BERKELEY SOFTWARE DESIGN, INC. 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.
*
* BSDI Id: isavar.h,v 1.5 1992/12/01 18:06:00 karels Exp
*/
#ifndef _DEV_ISA_ISAVAR_H_
#define _DEV_ISA_ISAVAR_H_
/*
* Definitions for ISA autoconfiguration.
*/
#include <sys/queue.h>
#include <machine/bus.h>
/*
* Structures and definitions needed by the machine-dependent header.
*/
struct isabus_attach_args;
#if (alpha + amiga + i386 != 1)
ERROR: COMPILING FOR UNSUPPORTED MACHINE, OR MORE THAN ONE.
#endif
#if alpha
#include <alpha/isa/isa_machdep.h>
#endif
#if amiga
#include <amiga/isa/isa_machdep.h>
#endif
#if i386
#include <i386/isa/isa_machdep.h>
#endif
/*
* ISA bus attach arguments
*/
struct isabus_attach_args {
char *iba_busname; /* XXX should be common */
bus_chipset_tag_t iba_bc; /* XXX should be common */
isa_chipset_tag_t iba_ic;
};
/*
* ISA driver attach arguments
*/
struct isa_attach_args {
bus_chipset_tag_t ia_bc;
isa_chipset_tag_t ia_ic;
int ia_iobase; /* base i/o address */
int ia_iosize; /* span of ports used */
int ia_irq; /* interrupt request */
int ia_drq; /* DMA request */
int ia_maddr; /* physical i/o mem addr */
u_int ia_msize; /* size of i/o memory */
void *ia_aux; /* driver specific */
bus_io_handle_t ia_delayioh; /* i/o handle for `delay port' */
};
#define IOBASEUNK -1 /* i/o address is unknown */
#define IRQUNK -1 /* interrupt request line is unknown */
#define DRQUNK -1 /* DMA request line is unknown */
#define MADDRUNK -1 /* shared memory address is unknown */
/*
* Per-device ISA variables
*/
struct isadev {
struct device *id_dev; /* back pointer to generic */
TAILQ_ENTRY(isadev)
id_bchain; /* bus chain */
};
/*
* ISA master bus
*/
struct isa_softc {
struct device sc_dev; /* base device */
TAILQ_HEAD(, isadev)
sc_subdevs; /* list of all children */
bus_chipset_tag_t sc_bc;
isa_chipset_tag_t sc_ic;
/*
* This i/o handle is used to map port 0x84, which is
* read to provide a 2.5us delay. This i/o handle
* is mapped in isaattach(), and exported to drivers
* via isa_attach_args.
*/
bus_io_handle_t sc_delayioh;
};
#define cf_iobase cf_loc[0]
#define cf_iosize cf_loc[1]
#define cf_maddr cf_loc[2]
#define cf_msize cf_loc[3]
#define cf_irq cf_loc[4]
#define cf_drq cf_loc[5]
/*
* ISA interrupt handler manipulation.
*
* To establish an ISA interrupt handler, a driver calls isa_intr_establish()
* with the interrupt number, type, level, function, and function argument of
* the interrupt it wants to handle. Isa_intr_establish() returns an opaque
* handle to an event descriptor if it succeeds, and invokes panic() if it
* fails. (XXX It should return NULL, then drivers should handle that, but
* what should they do?) Interrupt handlers should return 0 for "interrupt
* not for me", 1 for "I took care of it", or -1 for "I guess it was mine,
* but I wasn't expecting it."
*
* To remove an interrupt handler, the driver calls isa_intr_disestablish()
* with the handle returned by isa_intr_establish() for that handler.
*/
/* ISA interrupt sharing types */
void isascan __P((struct device *parent, void *match));
char *isa_intr_typename __P((int type));
#ifdef NEWCONFIG
/*
* Establish a device as being on the ISA bus (XXX NOT IMPLEMENTED).
*/
void isa_establish __P((struct isadev *, struct device *));
#endif
#endif /* _DEV_ISA_ISAVAR_H_ */
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