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

158 lines
4.5 KiB
C

/* $NetBSD: wdc_pioc.c,v 1.2 1997/10/17 06:52:26 mark Exp $ */
/*
* Copyright (c) 1994, 1995 Charles M. Hannum. All rights reserved.
*
* DMA and multi-sector PIO handling are derived from code contributed by
* Onno van der Linden.
*
* 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 Charles M. Hannum.
* 4. The name of the author may not 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 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.
*
* from: wd.c,v 1.156 1997/01/17 20:45:29 perry Exp
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/buf.h>
#include <sys/device.h>
#include <sys/proc.h>
#include <machine/bus.h>
#include <machine/bootconfig.h>
#include <machine/irqhandler.h>
#include <arm32/mainbus/piocvar.h>
#include <arm32/dev/wdreg.h>
#include <arm32/dev/wdlink.h>
#include "locators.h"
/* 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 *));
char *strstr __P((char *s1, char *s2));
/* device attach structure */
struct cfattach wdc_pioc_ca = {
sizeof(struct wdc_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;
bus_space_tag_t iot;
bus_space_handle_t ioh;
bus_space_handle_t aux_ioh;
int rv = 0;
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);
/* XXX - need xname */
iot = pa->pa_iot;
iobase = pa->pa_iobase + pa->pa_offset;
if (bus_space_map(iot, iobase, 8, 0, &ioh))
return(0);
if (bus_space_map(iot, iobase + (WD_ALTSTATUS*4), 1, 0, &aux_ioh))
goto out;
rv = wdcprobe_internal(iot, ioh, aux_ioh, ioh, -1, "wdc");
pa->pa_iosize = 8*4;
out:
bus_space_unmap(iot, ioh, 8);
bus_space_unmap(iot, aux_ioh, 1);
return(rv);
}
/*
* 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_softc *wdc = (void *)self;
struct pioc_attach_args *pa = aux;
bus_space_tag_t iot;
bus_space_handle_t ioh;
bus_space_handle_t aux_ioh;
u_int iobase;
/* TAILQ_INIT(&wdc->sc_drives);*/
iot = pa->pa_iot;
iobase = pa->pa_iobase + pa->pa_offset;
if (bus_space_map(iot, iobase, 8, 0, &ioh))
panic("%s: Cannot map IO\n", wdc->sc_dev.dv_xname);
if (bus_space_map(iot, iobase + (WD_ALTSTATUS*4), 1, 0,
&aux_ioh))
panic("%s: Cannot map IO\n", wdc->sc_dev.dv_xname);
wdc->sc_ih = intr_claim(pa->pa_irq, IPL_BIO, "wdc",
wdcintr, wdc);
/* Hack needed for some drives */
if (boot_args) {
char *ptr;
ptr = strstr(boot_args, "nowdreset");
if (ptr)
wdc->sc_flags |= WDCF_NORESET;
}
wdcattach_internal(wdc, iot, ioh, aux_ioh, ioh, -1, pa->pa_drq);
}
/* End of wdc_pioc.c */