NetBSD/sys/dev/isa/isavar.h

184 lines
7.1 KiB
C

/* $NetBSD: isavar.h,v 1.38 2000/06/04 19:15:12 cgd Exp $ */
/*-
* Copyright (c) 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation 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 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) 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;
#include <machine/isa_machdep.h>
/*
* ISA bus attach arguments
*/
struct isabus_attach_args {
char *iba_busname; /* XXX should be common */
bus_space_tag_t iba_iot; /* isa i/o space tag */
bus_space_tag_t iba_memt; /* isa mem space tag */
bus_dma_tag_t iba_dmat; /* isa DMA tag */
isa_chipset_tag_t iba_ic;
};
/*
* ISA driver attach arguments
*/
struct isa_attach_args {
bus_space_tag_t ia_iot; /* isa i/o space tag */
bus_space_tag_t ia_memt; /* isa mem space tag */
bus_dma_tag_t ia_dmat; /* DMA tag */
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_drq2; /* second DMA request */
int ia_maddr; /* physical i/o mem addr */
u_int ia_msize; /* size of i/o memory */
void *ia_aux; /* driver specific */
};
#include "locators.h"
#define IOBASEUNK ISACF_PORT_DEFAULT /* i/o address is unknown */
#define IRQUNK ISACF_IRQ_DEFAULT /* interrupt request line is unknown */
#define DRQUNK ISACF_DRQ_DEFAULT /* DMA request line is unknown */
#define MADDRUNK ISACF_IOMEM_DEFAULT /* shared memory address is unknown */
/*
* ISA master bus
*/
struct isa_softc {
struct device sc_dev; /* base device */
bus_space_tag_t sc_iot; /* isa io space tag */
bus_space_tag_t sc_memt; /* isa mem space tag */
bus_dma_tag_t sc_dmat; /* isa DMA tag */
isa_chipset_tag_t sc_ic;
};
#define cf_iobase cf_loc[ISACF_PORT]
#define cf_iosize cf_loc[ISACF_SIZE]
#define cf_maddr cf_loc[ISACF_IOMEM]
#define cf_msize cf_loc[ISACF_IOSIZ]
#define cf_irq cf_loc[ISACF_IRQ]
#define cf_drq cf_loc[ISACF_DRQ]
#define cf_drq2 cf_loc[ISACF_DRQ2]
/*
* 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 returns NULL on failure.
* (XXX: some drivers can't handle this, since the former behaviour was to
* invoke panic() on failure). When the system does not accept any of the
* interrupt types supported by the driver, the driver should fail the attach.
* 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.
*
* The event counter (struct evcnt) associated with an interrupt line
* (to be used as 'parent' for an ISA device's interrupt handler's evcnt)
* can be obtained with isa_intr_evcnt().
*/
/* ISA interrupt sharing types */
char *isa_intr_typename __P((int type));
/*
* Some ISA devices (e.g. on a VLB) can perform 32-bit DMA. This
* flag is passed to bus_dmamap_create() to indicate that fact.
*/
#define ISABUS_DMA_32BIT BUS_DMA_BUS1
#endif /* _DEV_ISA_ISAVAR_H_ */