166 lines
4.3 KiB
C
166 lines
4.3 KiB
C
/* $NetBSD: i82072.c,v 1.3 2000/12/03 04:51:05 matt Exp $ */
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/*-
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* Copyright (c) 2000 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 Wayne Knowles
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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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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/syslog.h>
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#include <sys/socket.h>
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#include <sys/device.h>
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#include <sys/conf.h>
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#include <machine/cpu.h>
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#include <machine/autoconf.h>
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#include <machine/mainboard.h>
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#include <machine/bus.h>
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dev_type_open(fdopen);
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dev_type_close(fdclose);
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dev_type_ioctl(fdioctl);
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dev_type_size(fdsize);
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dev_type_dump(fddump);
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dev_type_strategy(fdstrategy);
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#define I82072_STATUS 0x000003
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#define I82072_DATA 0x000007
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#define I82072_TC 0x800003
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struct fd_softc {
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struct device dev;
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struct evcnt fd_intrcnt;
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bus_space_tag_t fd_bst;
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bus_space_handle_t fd_bsh;
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int unit;
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};
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static int fd_match (struct device *, struct cfdata *, void *);
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static void fd_attach (struct device *, struct device *, void *);
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static void fd_reset (struct fd_softc *);
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struct cfattach fd_ca = {
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sizeof(struct fd_softc), fd_match, fd_attach
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};
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static int fd_intr (void *);
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int
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fd_match(struct device *parent, struct cfdata *cf, void *aux)
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{
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return 1;
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}
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void
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fd_attach(struct device *parent, struct device *self, void *aux)
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{
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struct fd_softc *sc = (void *)self;
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struct confargs *ca = aux;
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sc->fd_bst = ca->ca_bustag;
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if (bus_space_map(ca->ca_bustag, ca->ca_addr,
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0x1000000,
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BUS_SPACE_MAP_LINEAR,
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&sc->fd_bsh) != 0) {
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printf("%s: cannot map registers\n", self->dv_xname);
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return;
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}
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evcnt_attach_dynamic(&sc->fd_intrcnt, EVCNT_TYPE_INTR, NULL,
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self->dv_xname, "intr");
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bus_intr_establish(sc->fd_bst, SYS_INTR_FDC, 0, 0, fd_intr, sc);
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fd_reset(sc);
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printf(": not fully implemented\n");
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}
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void
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fd_reset(struct fd_softc *sc)
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{
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/* This clears any pending interrupts from the i82072 FDC */
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bus_space_write_1(sc->fd_bst, sc->fd_bsh, I82072_STATUS, 0x80);
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DELAY(1000);
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bus_space_write_1(sc->fd_bst, sc->fd_bsh, I82072_TC, 0x01);
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DELAY(1000);
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}
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int
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fdopen(dev_t dev, int flags, int mode, struct proc *p)
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{
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return (EBADF);
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}
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int
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fdclose(dev_t dev, int flags, int mode, struct proc *p)
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{
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return 0;
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}
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void
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fdstrategy(struct buf *bp)
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{
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panic("fdstrategy");
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}
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int
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fdioctl(dev_t dev, u_long cmd, caddr_t data, int flags, struct proc *p)
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{
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return (EINVAL);
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}
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int
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fddump(dev_t dev, daddr_t blkno, caddr_t va, size_t size)
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{
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return (ENODEV);
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}
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int
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fdsize(dev_t dev)
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{
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return (0);
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}
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static int
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fd_intr(arg)
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void *arg;
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{
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struct fd_softc *sc = arg;
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sc->fd_intrcnt.ev_count++;
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fd_reset(sc);
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return 0;
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}
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