114 lines
4.0 KiB
C
114 lines
4.0 KiB
C
/*
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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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* from: BSDI Id: isavar.h,v 1.5 1992/12/01 18:06:00 karels Exp
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* $Id: isavar.h,v 1.10 1994/07/27 01:50:15 mycroft Exp $
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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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u_short ia_iobase; /* base i/o address */
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u_short ia_iosize; /* span of ports used */
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u_short ia_irq; /* interrupt request */
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u_short ia_drq; /* DMA request */
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caddr_t 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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};
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#define IOBASEUNK 0xffff /* i/o address is unknown */
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#define IRQUNK 0xffff /* interrupt request line is unknown */
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#define DRQUNK 0xffff /* DMA request line is unknown */
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#define MADDRUNK (caddr_t)-1 /* 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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struct isadev *id_bchain; /* forward link in bus chain */
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};
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/*
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* ISA masterbus
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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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struct isadev *sc_isadev; /* list of all children */
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};
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#define cf_iobase cf_loc[0]
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#define cf_iosize cf_loc[1]
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#define cf_maddr cf_loc[2]
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#define cf_msize cf_loc[3]
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#define cf_irq cf_loc[4]
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#define cf_drq cf_loc[5]
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/*
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* Interrupt handler chains. Interrupt handlers should return 0 for
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* `not I', 1 (`I took care of it'), or -1 (`I guess it was mine, but
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* I wasn't expecting it'). 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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};
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void intr_establish __P((int intr, struct intrhand *));
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void intr_disestablish __P((int intr, struct intrhand *));
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void isa_establish __P((struct isadev *, struct device *));
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/*
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* software conventions
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*/
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typedef enum { BUS_ISA, BUS_EISA, BUS_MCA } isa_type;
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extern int atdevbase; /* kernel virtual address of "hole" */
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extern isa_type isa_bustype; /* type of bus */
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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) ((caddr_t) ((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) ((caddr_t) ((u_long)(p) - IOM_BEGIN + atdevbase))
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