241 lines
7.0 KiB
C
241 lines
7.0 KiB
C
/* $NetBSD: fdc_isa.c,v 1.18 2008/04/28 20:23:52 martin Exp $ */
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/*-
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* Copyright (c) 1998 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 Charles M. Hannum.
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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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*
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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) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Don Ahn.
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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. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS OR CONTRIBUTORS 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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* @(#)fd.c 7.4 (Berkeley) 5/25/91
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: fdc_isa.c,v 1.18 2008/04/28 20:23:52 martin Exp $");
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#include "rnd.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/callout.h>
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#include <sys/device.h>
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#include <sys/buf.h>
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#include <sys/queue.h>
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#if NRND > 0
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#include <sys/rnd.h>
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#endif
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#include <sys/bus.h>
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#include <sys/intr.h>
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#include <dev/isa/isavar.h>
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#include <dev/isa/isadmavar.h>
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#include <dev/isa/fdreg.h>
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#include <dev/isa/fdcvar.h>
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static int fdc_isa_probe(device_t, cfdata_t, void *);
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static void fdc_isa_attach(device_t, device_t, void *);
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static int fdc_isa_detach(device_t, int);
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struct fdc_isa_softc {
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struct fdc_softc sc_fdc; /* base fdc device */
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bus_space_handle_t sc_baseioh; /* base I/O handle */
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};
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CFATTACH_DECL2_NEW(fdc_isa, sizeof(struct fdc_isa_softc),
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fdc_isa_probe, fdc_isa_attach, fdc_isa_detach, NULL, NULL, fdc_childdet);
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#ifdef NEWCONFIG
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void fdc_isa_forceintr(void *);
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#endif
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static int
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fdc_isa_probe(device_t parent, cfdata_t match, void *aux)
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{
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struct isa_attach_args *ia = aux;
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bus_space_tag_t iot;
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bus_space_handle_t ioh, ctl_ioh, base_ioh;
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int rv, iobase;
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iot = ia->ia_iot;
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rv = 0;
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if (ia->ia_nio < 1)
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return (0);
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if (ia->ia_nirq < 1)
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return (0);
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if (ia->ia_ndrq < 1)
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return (0);
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if (ISA_DIRECT_CONFIG(ia))
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return (0);
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/* Disallow wildcarded I/O addresses. */
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if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
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return (0);
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/* Don't allow wildcarded IRQ/DRQ. */
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if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ)
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return (0);
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if (ia->ia_drq[0].ir_drq == ISA_UNKNOWN_DRQ)
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return (0);
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/* Map the I/O space. */
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iobase = ia->ia_io[0].ir_addr;
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if (bus_space_map(iot, iobase, 6 /* FDC_NPORT */, 0, &base_ioh))
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return (0);
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if (bus_space_subregion(iot, base_ioh, 2, 4, &ioh)) {
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bus_space_unmap(iot, base_ioh, 6);
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return (0);
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}
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if (bus_space_map(iot, iobase + fdctl + 2, 1, 0, &ctl_ioh)) {
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bus_space_unmap(iot, base_ioh, 6);
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return (0);
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}
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/* Not needed for the rest of the probe. */
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bus_space_unmap(iot, ctl_ioh, 1);
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/* reset */
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bus_space_write_1(iot, ioh, fdout, 0);
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delay(100);
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bus_space_write_1(iot, ioh, fdout, FDO_FRST);
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/* see if it can handle a command */
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if (out_fdc(iot, ioh, NE7CMD_SPECIFY) < 0)
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goto out;
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out_fdc(iot, ioh, 0xdf);
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out_fdc(iot, ioh, 2);
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rv = 1;
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ia->ia_nio = 1;
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ia->ia_io[0].ir_size = FDC_NPORT;
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ia->ia_nirq = 1;
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ia->ia_ndrq = 1;
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ia->ia_niomem = 0;
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out:
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bus_space_unmap(iot, base_ioh, 6 /* FDC_NPORT */);
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return (rv);
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}
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static int
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fdc_isa_detach(device_t self, int flags)
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{
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int rc;
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struct fdc_isa_softc *isc = device_private(self);
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struct fdc_softc *fdc = &isc->sc_fdc;
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if ((rc = fdcdetach(self, flags)) != 0)
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return rc;
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isa_intr_disestablish(fdc->sc_ic, fdc->sc_ih);
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bus_space_unmap(fdc->sc_iot, fdc->sc_fdctlioh, 1);
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bus_space_unmap(fdc->sc_iot, isc->sc_baseioh, 6 /* FDC_NPORT */);
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return 0;
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}
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static void
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fdc_isa_attach(device_t parent, device_t self, void *aux)
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{
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struct fdc_isa_softc *isc = device_private(self);
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struct fdc_softc *fdc = &isc->sc_fdc;
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struct isa_attach_args *ia = aux;
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aprint_naive("\n");
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aprint_normal("\n");
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fdc->sc_dev = self;
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fdc->sc_iot = ia->ia_iot;
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fdc->sc_ic = ia->ia_ic;
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fdc->sc_drq = ia->ia_drq[0].ir_drq;
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if (bus_space_map(fdc->sc_iot, ia->ia_io[0].ir_addr,
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6 /* FDC_NPORT */, 0, &isc->sc_baseioh)) {
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aprint_normal_dev(fdc->sc_dev, "unable to map I/O space\n");
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return;
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}
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if (bus_space_subregion(fdc->sc_iot, isc->sc_baseioh, 2, 4,
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&fdc->sc_ioh)) {
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aprint_normal_dev(fdc->sc_dev,
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"unable to subregion I/O space\n");
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return;
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}
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if (bus_space_map(fdc->sc_iot, ia->ia_io[0].ir_addr + fdctl + 2, 1, 0,
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&fdc->sc_fdctlioh)) {
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aprint_normal_dev(fdc->sc_dev,
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"unable to map CTL I/O space\n");
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return;
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}
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fdc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
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IST_EDGE, IPL_BIO, fdcintr, fdc);
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fdcattach(fdc);
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}
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