NetBSD/sys/arch/arm32/mainbus/wdc_pioc.c

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/* $NetBSD: wdc_pioc.c,v 1.12 2000/03/23 06:35:15 thorpej Exp $ */
/*
* Copyright (c) 1997-1998 Mark Brinicombe.
* Copyright (c) 1997 Causality Limited.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Mark Brinicombe
* for the NetBSD Project.
* 4. The name of the company nor the name of the author may be used to
* endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
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#include <sys/malloc.h>
#include <machine/bus.h>
#include <machine/irqhandler.h>
#include <arm32/mainbus/piocvar.h>
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#include <dev/ata/atavar.h>
#include <dev/ic/wdcvar.h>
#include "locators.h"
#define WDC_PIOC_REG_NPORTS 8
#define WDC_PIOC_AUXREG_OFFSET (0x206 * 4)
#define WDC_PIOC_AUXREG_NPORTS 1
struct wdc_pioc_softc {
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struct wdc_softc sc_wdcdev;
struct channel_softc *wdc_chanptr;
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struct channel_softc wdc_channel;
void *sc_ih;
};
/* prototypes for functions */
static int wdc_pioc_probe __P((struct device *, struct cfdata *, void *));
static void wdc_pioc_attach __P((struct device *, struct device *, void *));
/* device attach structure */
struct cfattach wdc_pioc_ca = {
sizeof(struct wdc_pioc_softc), wdc_pioc_probe, wdc_pioc_attach
};
/*
* int wdc_pioc_probe(struct device *parent, struct cfdata *cf, void *aux)
*
* Make sure we are trying to attach a wdc device and then
* probe for one.
*/
static int
wdc_pioc_probe(parent, cf, aux)
struct device *parent;
struct cfdata *cf;
void *aux;
{
struct pioc_attach_args *pa = aux;
struct channel_softc ch;
int res;
u_int iobase;
if (pa->pa_name && strcmp(pa->pa_name, "wdc") != 0)
return(0);
/* We need an offset */
if (pa->pa_offset == PIOCCF_OFFSET_DEFAULT)
return(0);
memset(&ch, 0, sizeof(ch));
iobase = pa->pa_iobase + pa->pa_offset;
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ch.cmd_iot = pa->pa_iot;
ch.ctl_iot = pa->pa_iot;
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if (bus_space_map(ch.cmd_iot, iobase, WDC_PIOC_REG_NPORTS, 0,
&ch.cmd_ioh))
return(0);
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if (bus_space_map(ch.ctl_iot, iobase + WDC_PIOC_AUXREG_OFFSET,
WDC_PIOC_AUXREG_NPORTS, 0, &ch.ctl_ioh)) {
bus_space_unmap(ch.cmd_iot, ch.cmd_ioh, WDC_PIOC_REG_NPORTS);
return(0);
}
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res = wdcprobe(&ch);
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bus_space_unmap(ch.ctl_iot, ch.ctl_ioh, WDC_PIOC_AUXREG_NPORTS);
bus_space_unmap(ch.cmd_iot, ch.cmd_ioh, WDC_PIOC_REG_NPORTS);
if (res)
pa->pa_iosize = WDC_PIOC_REG_NPORTS;
return(res);
}
/*
* void wdc_pioc_attach(struct device *parent, struct device *self, void *aux)
*
* attach the wdc device
*/
static void
wdc_pioc_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct wdc_pioc_softc *sc = (void *)self;
struct pioc_attach_args *pa = aux;
u_int iobase;
printf("\n");
iobase = pa->pa_iobase + pa->pa_offset;
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sc->wdc_channel.cmd_iot = pa->pa_iot;
sc->wdc_channel.ctl_iot = pa->pa_iot;
if (bus_space_map(sc->wdc_channel.cmd_iot, iobase,
WDC_PIOC_REG_NPORTS, 0, &sc->wdc_channel.cmd_ioh))
panic("%s: couldn't map drive registers\n", self->dv_xname);
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if (bus_space_map(sc->wdc_channel.ctl_iot,
iobase + WDC_PIOC_AUXREG_OFFSET, WDC_PIOC_AUXREG_NPORTS, 0,
&sc->wdc_channel.ctl_ioh))
panic("%s: couldn't map aux registers\n", self->dv_xname);
sc->sc_ih = intr_claim(pa->pa_irq, IPL_BIO, "wdc", wdcintr,
&sc->wdc_channel);
if (!sc->sc_ih)
panic("%s: Cannot claim IRQ %d\n", self->dv_xname, pa->pa_irq);
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sc->sc_wdcdev.cap |= WDC_CAPABILITY_DATA16;
sc->sc_wdcdev.PIO_cap = 0;
sc->wdc_chanptr = &sc->wdc_channel;
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;
sc->wdc_channel.channel = 0;
sc->wdc_channel.ch_queue = malloc(sizeof(struct channel_queue),
M_DEVBUF, M_NOWAIT);
if (sc->wdc_channel.ch_queue == NULL) {
printf("%s: can't allocate memory for command queue",
sc->sc_wdcdev.sc_dev.dv_xname);
return;
}
wdcattach(&sc->wdc_channel);
}
/* End of wdc_pioc.c */