e0cc03a09b
kqueue provides a stateful and efficient event notification framework currently supported events include socket, file, directory, fifo, pipe, tty and device changes, and monitoring of processes and signals kqueue is supported by all writable filesystems in NetBSD tree (with exception of Coda) and all device drivers supporting poll(2) based on work done by Jonathan Lemon for FreeBSD initial NetBSD port done by Luke Mewburn and Jason Thorpe
146 lines
4.2 KiB
C
146 lines
4.2 KiB
C
/* $NetBSD: i82072.c,v 1.7 2002/10/23 09:11:39 jdolecek 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 <sys/event.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_strategy(fdstrategy);
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const struct bdevsw fd_bdevsw = {
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fdopen, nullclose, fdstrategy, noioctl, nodump, nosize, D_DISK
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};
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const struct cdevsw fd_cdevsw = {
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fdopen, nullclose, noread, nowrite, noioctl,
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nostop, notty, nopoll, nommap, nokqfilter, D_DISK
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};
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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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CFATTACH_DECL(fd, sizeof(struct fd_softc),
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fd_match, fd_attach, NULL, NULL);
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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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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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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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