158 lines
4.5 KiB
C
158 lines
4.5 KiB
C
/* $NetBSD: wdc_pioc.c,v 1.1 1997/10/14 19:57:41 mark Exp $ */
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/*
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* Copyright (c) 1994, 1995 Charles M. Hannum. All rights reserved.
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*
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* DMA and multi-sector PIO handling are derived from code contributed by
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* Onno van der Linden.
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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 Charles M. Hannum.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* from: wd.c,v 1.156 1997/01/17 20:45:29 perry Exp
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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/kernel.h>
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#include <sys/buf.h>
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#include <sys/device.h>
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#include <sys/proc.h>
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#include <machine/bus.h>
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#include <machine/bootconfig.h>
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#include <machine/irqhandler.h>
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#include <arm32/mainbus/piocvar.h>
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#include <arm32/dev/wdreg.h>
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#include <arm32/dev/wdcvar.h>
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#include "locators.h"
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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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char *strstr __P((char *s1, char *s2));
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/* device attach structure */
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struct cfattach wdc_pioc_ca = {
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sizeof(struct wdc_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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bus_space_tag_t iot;
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bus_space_handle_t ioh;
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bus_space_handle_t aux_ioh;
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int rv = 0;
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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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/* XXX - need xname */
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iot = pa->pa_iot;
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iobase = pa->pa_iobase + pa->pa_offset;
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if (bus_space_map(iot, iobase, 8, 0, &ioh))
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return(0);
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if (bus_space_map(iot, iobase + (WD_ALTSTATUS*4), 1, 0, &aux_ioh))
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goto out;
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rv = wdcprobe_internal(iot, ioh, aux_ioh, ioh, -1, "wdc");
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pa->pa_iosize = 8*4;
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out:
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bus_space_unmap(iot, ioh, 8);
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bus_space_unmap(iot, aux_ioh, 1);
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return(rv);
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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_softc *wdc = (void *)self;
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struct pioc_attach_args *pa = aux;
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bus_space_tag_t iot;
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bus_space_handle_t ioh;
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bus_space_handle_t aux_ioh;
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u_int iobase;
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TAILQ_INIT(&wdc->sc_drives);
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iot = pa->pa_iot;
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iobase = pa->pa_iobase + pa->pa_offset;
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if (bus_space_map(iot, iobase, 8, 0, &ioh))
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panic("%s: Cannot map IO\n", wdc->sc_dev.dv_xname);
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if (bus_space_map(iot, iobase + (WD_ALTSTATUS*4), 1, 0,
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&aux_ioh))
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panic("%s: Cannot map IO\n", wdc->sc_dev.dv_xname);
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wdc->sc_ih = intr_claim(pa->pa_irq, IPL_BIO, "wdc",
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wdcintr, wdc);
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/* Hack needed for some drives */
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if (boot_args) {
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char *ptr;
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ptr = strstr(boot_args, "nowdreset");
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if (ptr)
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wdc->sc_flags |= WDCF_NORESET;
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}
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wdcattach_internal(wdc, iot, ioh, aux_ioh, ioh, -1, pa->pa_drq);
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}
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/* End of wdc_pioc.c */
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