136 lines
3.5 KiB
C
136 lines
3.5 KiB
C
/*
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* Copyright 2002 by Peter Grehan. All rights reserved.
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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. 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,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* 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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* $FreeBSD$
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*/
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/*
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* Mac-io ATA controller
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*/
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#include "opt_ata.h"
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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/module.h>
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#include <sys/bus.h>
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#include <sys/malloc.h>
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#include <machine/stdarg.h>
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#include <machine/resource.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <sys/ata.h>
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#include <dev/ata/ata-all.h>
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#include <dev/ofw/openfirm.h>
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#include <powerpc/powermac/maciovar.h>
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/*
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* Offset to control registers from base
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*/
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#define ATA_MACIO_ALTOFFSET 0x160
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/*
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* Define the gap between registers
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*/
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#define ATA_MACIO_REGGAP 16
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/*
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* Define the macio ata bus attachment.
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*/
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static int ata_macio_probe(device_t dev);
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static device_method_t ata_macio_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, ata_macio_probe),
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DEVMETHOD(device_attach, ata_attach),
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{ 0, 0 }
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};
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static driver_t ata_macio_driver = {
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"ata",
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ata_macio_methods,
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sizeof(struct ata_channel),
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};
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DRIVER_MODULE(ata, macio, ata_macio_driver, ata_devclass, 0, 0);
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static void
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ata_macio_locknoop(struct ata_channel *ch, int type)
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{
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/* XXX SMP ? */
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}
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static void
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ata_macio_setmode(struct ata_device *atadev, int mode)
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{
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#if 0
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atadev->mode = ata_limit_mode(atadev, mode, ATA_PIO_MAX);
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#endif
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atadev->mode = ATA_PIO;
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}
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static int
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ata_macio_probe(device_t dev)
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{
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char *type = macio_get_devtype(dev);
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struct ata_channel *ch;
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struct resource *mem;
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int rid, i;
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if (strcmp(type, "ata") != 0)
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return (ENXIO);
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ch = device_get_softc(dev);
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rid = 0;
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mem = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~1, 1,
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RF_ACTIVE);
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if (mem == NULL) {
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device_printf(dev, "could not allocate memory\n");
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return (ENXIO);
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}
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/*
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* Set up the resource vectors
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*/
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for (i = ATA_DATA; i <= ATA_STATUS; i++) {
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ch->r_io[i].res = mem;
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ch->r_io[i].offset = i * ATA_MACIO_REGGAP;
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}
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ch->r_io[ATA_ALTSTAT].res = mem;
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ch->r_io[ATA_ALTSTAT].offset = ATA_MACIO_ALTOFFSET;
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ch->unit = 0;
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ch->flags |= ATA_USE_16BIT;
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ch->locking = ata_macio_locknoop;
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ch->device[MASTER].setmode = ata_macio_setmode;
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ch->device[SLAVE].setmode = ata_macio_setmode;
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return (ata_probe(dev));
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}
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