251 lines
8.6 KiB
C
251 lines
8.6 KiB
C
/* $NetBSD: isavar.h,v 1.31 1998/02/17 18:27:10 cgd Exp $ */
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/*-
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* Copyright (c) 1997 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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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 NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1995 Chris G. Demetriou
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* Copyright (c) 1992 Berkeley Software Design, Inc.
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* All rights reserved.
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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 Berkeley Software
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* Design, Inc.
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* 4. The name of Berkeley Software Design must not be used to endorse
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* or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY BERKELEY SOFTWARE DESIGN, INC. ``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 BERKELEY SOFTWARE DESIGN, INC. 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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* BSDI Id: isavar.h,v 1.5 1992/12/01 18:06:00 karels Exp
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*/
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#ifndef _DEV_ISA_ISAVAR_H_
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#define _DEV_ISA_ISAVAR_H_
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/*
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* Definitions for ISA autoconfiguration.
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*/
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#include <sys/queue.h>
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#include <machine/bus.h>
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/*
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* Structures and definitions needed by the machine-dependent header.
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*/
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struct isabus_attach_args;
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#if (alpha + arm32 + atari + bebox + i386 != 1)
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ERROR: COMPILING FOR UNSUPPORTED MACHINE, OR MORE THAN ONE.
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#endif
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#if alpha
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#include <alpha/isa/isa_machdep.h>
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#endif
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#if arm32
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#include <arm32/isa/isa_machdep.h>
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#endif
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#if atari
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#include <atari/isa/isa_machdep.h>
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#endif
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#if bebox
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#include <bebox/isa/isa_machdep.h>
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#endif
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#if i386
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#include <i386/isa/isa_machdep.h>
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#endif
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/*
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* ISA bus attach arguments
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*/
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struct isabus_attach_args {
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char *iba_busname; /* XXX should be common */
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bus_space_tag_t iba_iot; /* isa i/o space tag */
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bus_space_tag_t iba_memt; /* isa mem space tag */
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bus_dma_tag_t iba_dmat; /* isa DMA tag */
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isa_chipset_tag_t iba_ic;
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};
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/*
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* ISA driver attach arguments
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*/
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struct isa_attach_args {
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bus_space_tag_t ia_iot; /* isa i/o space tag */
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bus_space_tag_t ia_memt; /* isa mem space tag */
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bus_dma_tag_t ia_dmat; /* DMA tag */
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isa_chipset_tag_t ia_ic;
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int ia_iobase; /* base i/o address */
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int ia_iosize; /* span of ports used */
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int ia_irq; /* interrupt request */
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int ia_drq; /* DMA request */
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int ia_drq2; /* second DMA request */
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int ia_maddr; /* physical i/o mem addr */
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u_int ia_msize; /* size of i/o memory */
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void *ia_aux; /* driver specific */
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bus_space_handle_t ia_delaybah; /* i/o handle for `delay port' */
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};
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#include "locators.h"
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#define IOBASEUNK ISACF_PORT_DEFAULT /* i/o address is unknown */
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#define IRQUNK ISACF_IRQ_DEFAULT /* interrupt request line is unknown */
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#define DRQUNK ISACF_DRQ_DEFAULT /* DMA request line is unknown */
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#define MADDRUNK ISACF_IOMEM_DEFAULT /* shared memory address is unknown */
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/*
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* Per-device ISA variables
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*/
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struct isadev {
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struct device *id_dev; /* back pointer to generic */
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TAILQ_ENTRY(isadev)
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id_bchain; /* bus chain */
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};
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/*
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* ISA master bus
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*/
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struct isa_softc {
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struct device sc_dev; /* base device */
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TAILQ_HEAD(, isadev)
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sc_subdevs; /* list of all children */
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bus_space_tag_t sc_iot; /* isa io space tag */
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bus_space_tag_t sc_memt; /* isa mem space tag */
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bus_dma_tag_t sc_dmat; /* isa DMA tag */
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isa_chipset_tag_t sc_ic;
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/*
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* Bitmap representing the DRQ channels available
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* for ISA.
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*/
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int sc_drqmap;
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bus_space_handle_t sc_dma1h; /* i/o handle for DMA controller #1 */
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bus_space_handle_t sc_dma2h; /* i/o handle for DMA controller #2 */
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bus_space_handle_t sc_dmapgh; /* i/o handle for DMA page registers */
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/*
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* DMA maps used for the 8 DMA channels.
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*/
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bus_dmamap_t sc_dmamaps[8];
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vm_size_t sc_dmalength[8];
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int sc_dmareads; /* state for isa_dmadone() */
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int sc_dmafinished; /* DMA completion state */
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/*
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* This i/o handle is used to map port 0x84, which is
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* read to provide a 1.25us delay. This access handle
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* is mapped in isaattach(), and exported to drivers
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* via isa_attach_args.
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*/
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bus_space_handle_t sc_delaybah;
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};
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#define ISA_DRQ_ISFREE(isadev, drq) \
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((((struct isa_softc *)(isadev))->sc_drqmap & (1 << (drq))) == 0)
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#define ISA_DRQ_ALLOC(isadev, drq) \
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((struct isa_softc *)(isadev))->sc_drqmap |= (1 << (drq))
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#define ISA_DRQ_FREE(isadev, drq) \
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((struct isa_softc *)(isadev))->sc_drqmap &= ~(1 << (drq))
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#define cf_iobase cf_loc[ISACF_PORT]
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#define cf_iosize cf_loc[ISACF_SIZE]
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#define cf_maddr cf_loc[ISACF_IOMEM]
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#define cf_msize cf_loc[ISACF_IOSIZ]
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#define cf_irq cf_loc[ISACF_IRQ]
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#define cf_drq cf_loc[ISACF_DRQ]
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#define cf_drq2 cf_loc[ISACF_DRQ2]
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/*
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* ISA interrupt handler manipulation.
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*
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* To establish an ISA interrupt handler, a driver calls isa_intr_establish()
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* with the interrupt number, type, level, function, and function argument of
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* the interrupt it wants to handle. Isa_intr_establish() returns an opaque
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* handle to an event descriptor if it succeeds, and invokes panic() if it
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* fails. (XXX It should return NULL, then drivers should handle that, but
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* what should they do?) Interrupt handlers should return 0 for "interrupt
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* not for me", 1 for "I took care of it", or -1 for "I guess it was mine,
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* but I wasn't expecting it."
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*
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* To remove an interrupt handler, the driver calls isa_intr_disestablish()
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* with the handle returned by isa_intr_establish() for that handler.
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*/
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/* ISA interrupt sharing types */
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char *isa_intr_typename __P((int type));
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#ifdef NEWCONFIG
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/*
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* Establish a device as being on the ISA bus (XXX NOT IMPLEMENTED).
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*/
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void isa_establish __P((struct isadev *, struct device *));
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#endif
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/*
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* Some ISA devices (e.g. on a VLB) can perform 32-bit DMA. This
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* flag is passed to bus_dmamap_create() to indicate that fact.
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*/
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#define ISABUS_DMA_32BIT BUS_DMA_BUS1
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#endif /* _DEV_ISA_ISAVAR_H_ */
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