NetBSD/sys/dev/isa/isavar.h

251 lines
8.6 KiB
C

/* $NetBSD: isavar.h,v 1.31 1998/02/17 18:27:10 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;
#if (alpha + arm32 + atari + bebox + i386 != 1)
ERROR: COMPILING FOR UNSUPPORTED MACHINE, OR MORE THAN ONE.
#endif
#if alpha
#include <alpha/isa/isa_machdep.h>
#endif
#if arm32
#include <arm32/isa/isa_machdep.h>
#endif
#if atari
#include <atari/isa/isa_machdep.h>
#endif
#if bebox
#include <bebox/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_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 */
bus_space_handle_t ia_delaybah; /* i/o handle for `delay port' */
};
#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 */
/*
* 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_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;
/*
* Bitmap representing the DRQ channels available
* for ISA.
*/
int sc_drqmap;
bus_space_handle_t sc_dma1h; /* i/o handle for DMA controller #1 */
bus_space_handle_t sc_dma2h; /* i/o handle for DMA controller #2 */
bus_space_handle_t sc_dmapgh; /* i/o handle for DMA page registers */
/*
* DMA maps used for the 8 DMA channels.
*/
bus_dmamap_t sc_dmamaps[8];
vm_size_t sc_dmalength[8];
int sc_dmareads; /* state for isa_dmadone() */
int sc_dmafinished; /* DMA completion state */
/*
* This i/o handle is used to map port 0x84, which is
* read to provide a 1.25us delay. This access handle
* is mapped in isaattach(), and exported to drivers
* via isa_attach_args.
*/
bus_space_handle_t sc_delaybah;
};
#define ISA_DRQ_ISFREE(isadev, drq) \
((((struct isa_softc *)(isadev))->sc_drqmap & (1 << (drq))) == 0)
#define ISA_DRQ_ALLOC(isadev, drq) \
((struct isa_softc *)(isadev))->sc_drqmap |= (1 << (drq))
#define ISA_DRQ_FREE(isadev, drq) \
((struct isa_softc *)(isadev))->sc_drqmap &= ~(1 << (drq))
#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 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 */
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
/*
* 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_ */