172 lines
5.2 KiB
C
172 lines
5.2 KiB
C
/* $NetBSD: wdc_pioc.c,v 1.12 2000/03/23 06:35:15 thorpej Exp $ */
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/*
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* Copyright (c) 1997-1998 Mark Brinicombe.
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* Copyright (c) 1997 Causality Limited.
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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 Mark Brinicombe
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* for the NetBSD Project.
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* 4. The name of the company nor the name of the author may be used to
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* endorse 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 THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/malloc.h>
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#include <machine/bus.h>
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#include <machine/irqhandler.h>
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#include <arm32/mainbus/piocvar.h>
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#include <dev/ata/atavar.h>
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#include <dev/ic/wdcvar.h>
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#include "locators.h"
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#define WDC_PIOC_REG_NPORTS 8
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#define WDC_PIOC_AUXREG_OFFSET (0x206 * 4)
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#define WDC_PIOC_AUXREG_NPORTS 1
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struct wdc_pioc_softc {
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struct wdc_softc sc_wdcdev;
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struct channel_softc *wdc_chanptr;
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struct channel_softc wdc_channel;
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void *sc_ih;
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};
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/* prototypes for functions */
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static int wdc_pioc_probe __P((struct device *, struct cfdata *, void *));
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static void wdc_pioc_attach __P((struct device *, struct device *, void *));
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/* device attach structure */
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struct cfattach wdc_pioc_ca = {
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sizeof(struct wdc_pioc_softc), wdc_pioc_probe, wdc_pioc_attach
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};
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/*
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* int wdc_pioc_probe(struct device *parent, struct cfdata *cf, void *aux)
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*
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* Make sure we are trying to attach a wdc device and then
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* probe for one.
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*/
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static int
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wdc_pioc_probe(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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struct pioc_attach_args *pa = aux;
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struct channel_softc ch;
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int res;
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u_int iobase;
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if (pa->pa_name && strcmp(pa->pa_name, "wdc") != 0)
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return(0);
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/* We need an offset */
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if (pa->pa_offset == PIOCCF_OFFSET_DEFAULT)
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return(0);
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memset(&ch, 0, sizeof(ch));
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iobase = pa->pa_iobase + pa->pa_offset;
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ch.cmd_iot = pa->pa_iot;
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ch.ctl_iot = pa->pa_iot;
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if (bus_space_map(ch.cmd_iot, iobase, WDC_PIOC_REG_NPORTS, 0,
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&ch.cmd_ioh))
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return(0);
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if (bus_space_map(ch.ctl_iot, iobase + WDC_PIOC_AUXREG_OFFSET,
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WDC_PIOC_AUXREG_NPORTS, 0, &ch.ctl_ioh)) {
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bus_space_unmap(ch.cmd_iot, ch.cmd_ioh, WDC_PIOC_REG_NPORTS);
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return(0);
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}
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res = wdcprobe(&ch);
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bus_space_unmap(ch.ctl_iot, ch.ctl_ioh, WDC_PIOC_AUXREG_NPORTS);
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bus_space_unmap(ch.cmd_iot, ch.cmd_ioh, WDC_PIOC_REG_NPORTS);
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if (res)
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pa->pa_iosize = WDC_PIOC_REG_NPORTS;
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return(res);
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}
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/*
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* void wdc_pioc_attach(struct device *parent, struct device *self, void *aux)
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*
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* attach the wdc device
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*/
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static void
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wdc_pioc_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 wdc_pioc_softc *sc = (void *)self;
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struct pioc_attach_args *pa = aux;
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u_int iobase;
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printf("\n");
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iobase = pa->pa_iobase + pa->pa_offset;
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sc->wdc_channel.cmd_iot = pa->pa_iot;
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sc->wdc_channel.ctl_iot = pa->pa_iot;
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if (bus_space_map(sc->wdc_channel.cmd_iot, iobase,
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WDC_PIOC_REG_NPORTS, 0, &sc->wdc_channel.cmd_ioh))
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panic("%s: couldn't map drive registers\n", self->dv_xname);
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if (bus_space_map(sc->wdc_channel.ctl_iot,
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iobase + WDC_PIOC_AUXREG_OFFSET, WDC_PIOC_AUXREG_NPORTS, 0,
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&sc->wdc_channel.ctl_ioh))
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panic("%s: couldn't map aux registers\n", self->dv_xname);
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sc->sc_ih = intr_claim(pa->pa_irq, IPL_BIO, "wdc", wdcintr,
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&sc->wdc_channel);
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if (!sc->sc_ih)
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panic("%s: Cannot claim IRQ %d\n", self->dv_xname, pa->pa_irq);
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sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16;
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sc->sc_wdcdev.PIO_cap = 0;
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sc->wdc_chanptr = &sc->wdc_channel;
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sc->sc_wdcdev.channels = &sc->wdc_chanptr;
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sc->wdc_channel.wdc = &sc->sc_wdcdev;
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sc->sc_wdcdev.nchannels = 1;
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sc->wdc_channel.channel = 0;
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sc->wdc_channel.ch_queue = malloc(sizeof(struct channel_queue),
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M_DEVBUF, M_NOWAIT);
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if (sc->wdc_channel.ch_queue == NULL) {
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printf("%s: can't allocate memory for command queue",
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sc->sc_wdcdev.sc_dev.dv_xname);
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return;
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}
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wdcattach(&sc->wdc_channel);
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}
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/* End of wdc_pioc.c */
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