207 lines
6.1 KiB
C
207 lines
6.1 KiB
C
/* $NetBSD: fdc_pcmcia.c,v 1.14 2004/08/10 19:54:30 mycroft Exp $ */
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/*-
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* Copyright (c) 1998, 2004 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 Christos Zoulas.
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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/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: fdc_pcmcia.c,v 1.14 2004/08/10 19:54:30 mycroft Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/device.h>
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#include <sys/disk.h>
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#include <sys/buf.h>
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#include <machine/bus.h>
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#include <machine/intr.h>
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#include <dev/pcmcia/pcmciareg.h>
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#include <dev/pcmcia/pcmciavar.h>
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#include <dev/pcmcia/pcmciadevs.h>
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#include <dev/isa/isavar.h>
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#include <dev/isa/fdreg.h>
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#include <dev/isa/fdcvar.h>
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struct fdc_pcmcia_softc {
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struct fdc_softc sc_fdc; /* real "fdc" softc */
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struct pcmcia_function *sc_pf; /* our PCMCIA function */
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};
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int fdc_pcmcia_match __P((struct device *, struct cfdata *, void *));
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int fdc_pcmcia_validate_config __P((struct pcmcia_config_entry *));
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void fdc_pcmcia_attach __P((struct device *, struct device *, void *));
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static void fdc_conf __P((struct fdc_softc *));
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CFATTACH_DECL(fdc_pcmcia, sizeof(struct fdc_pcmcia_softc),
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fdc_pcmcia_match, fdc_pcmcia_attach, NULL, NULL);
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const struct pcmcia_product fdc_pcmcia_products[] = {
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{ PCMCIA_VENDOR_YEDATA, PCMCIA_PRODUCT_YEDATA_EXTERNAL_FDD,
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PCMCIA_CIS_YEDATA_EXTERNAL_FDD },
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};
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const size_t fdc_pcmcia_nproducts =
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sizeof(fdc_pcmcia_products) / sizeof(fdc_pcmcia_products[0]);
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static void
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fdc_conf(fdc)
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struct fdc_softc *fdc;
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{
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bus_space_tag_t iot = fdc->sc_iot;
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bus_space_handle_t ioh = fdc->sc_ioh;
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int n;
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/* Figure out what we have */
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if (out_fdc_cmd(iot, ioh, FDC_CMD_VERSION) == -1 ||
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(n = fdcresult(fdc, 1)) != 1)
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return;
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/* Nec765 or equivalent */
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if (FDC_ST0(fdc->sc_status[0]) == FDC_ST0_INVL)
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return;
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#if 0
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/* ns8477 check */
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if (out_fdc_cmd(iot, ioh, FDC_CMD_NSC) == -1 ||
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(n = fdcresult(fdc, 1)) != 1) {
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printf("NSC command failed\n");
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return;
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}
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else
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printf("Version %x\n", fdc->sc_status[0]);
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#endif
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if (out_fdc_cmd(iot, ioh, FDC_CMD_DUMPREG) == -1 ||
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(n = fdcresult(fdc, -1)) == -1)
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return;
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/*
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* Expect 10 bytes of status; one means that it did not
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* understand the command
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*/
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if (n == 1)
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return;
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/*
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* Configure controller to use FIFO and 8 bytes of FIFO threshold
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*/
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(void)out_fdc_cmd(iot, ioh, FDC_CMD_CONFIGURE);
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(void)out_fdc(iot, ioh, 0x00); /* doc says 0 */
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(void)out_fdc(iot, ioh, 8); /* FIFO is active low. */
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(void)out_fdc(iot, ioh, fdc->sc_status[9]); /* same comp */
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/* No result phase */
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/* Lock this configuration */
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if (out_fdc_cmd(iot, ioh, FDC_CMD_LOCK(FDC_CMD_FLAGS_LOCK)) == -1 ||
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fdcresult(fdc, 1) != 1)
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return;
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}
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int
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fdc_pcmcia_match(parent, match, aux)
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struct device *parent;
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struct cfdata *match;
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void *aux;
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{
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struct pcmcia_attach_args *pa = aux;
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if (pcmcia_product_lookup(pa, fdc_pcmcia_products, fdc_pcmcia_nproducts,
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sizeof(fdc_pcmcia_products[0]), NULL))
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return (1);
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return (0);
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}
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void
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fdc_pcmcia_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct fdc_pcmcia_softc *psc = (void *)self;
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struct fdc_softc *fdc = &psc->sc_fdc;
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struct pcmcia_attach_args *pa = aux;
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struct pcmcia_config_entry *cfe;
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struct pcmcia_function *pf = pa->pf;
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struct fdc_attach_args fa;
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int error;
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psc->sc_pf = pf;
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error = pcmcia_function_configure(pf, fdc_pcmcia_validate_config);
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if (error) {
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aprint_error("%s: configure failed, error=%d\n", self->dv_xname,
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error);
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return;
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}
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cfe = pf->cfe;
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fdc->sc_iot = cfe->iospace[0].handle.iot;
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fdc->sc_iot = cfe->iospace[0].handle.ioh;
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if (pcmcia_function_enable(pf))
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goto fail;
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fdc->sc_flags = FDC_HEADSETTLE;
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fdc->sc_state = DEVIDLE;
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TAILQ_INIT(&fdc->sc_drives);
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if (!fdcfind(fdc->sc_iot, fdc->sc_ioh, 1))
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aprint_error("%s: coundn't find fdc\n", self->dv_xname);
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fdc_conf(fdc);
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/* Establish the interrupt handler. */
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fdc->sc_ih = pcmcia_intr_establish(pa->pf, IPL_BIO, fdchwintr, fdc);
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if (!fdc->sc_ih)
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goto fail;
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/* physical limit: four drives per controller. */
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for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) {
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if (fa.fa_drive < 2)
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fa.fa_deftype = &fd_types[0];
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else
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fa.fa_deftype = NULL; /* unknown */
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(void)config_found(self, (void *)&fa, fdprint);
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}
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return;
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fail:
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pcmcia_function_unconfigure(pf);
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}
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