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242 lines
6.6 KiB
C
242 lines
6.6 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/disk.h>
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#include <sys/module.h>
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#include <sys/bus.h>
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#include <sys/bio.h>
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#include <sys/malloc.h>
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#include <sys/devicestat.h>
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#include <sys/sysctl.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 <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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* Define the macio ata bus attachment. This creates a pseudo-bus that
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* the ATA device can be attached to
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*/
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static int ata_macio_attach(device_t dev);
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static int ata_macio_probe(device_t dev);
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static int ata_macio_print_child(device_t dev, device_t child);
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struct resource *ata_macio_alloc_resource(device_t, device_t, int, int *,
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u_long, u_long, u_long, u_int);
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static int ata_macio_release_resource(device_t, device_t, int, int,
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struct resource *);
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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_macio_attach),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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DEVMETHOD(device_suspend, bus_generic_suspend),
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DEVMETHOD(device_resume, bus_generic_resume),
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/* Bus methods */
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DEVMETHOD(bus_print_child, ata_macio_print_child),
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DEVMETHOD(bus_alloc_resource, ata_macio_alloc_resource),
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DEVMETHOD(bus_release_resource, ata_macio_release_resource),
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DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
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DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
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DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
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DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
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{ 0, 0 }
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};
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static driver_t ata_macio_driver = {
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"atamacio",
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ata_macio_methods,
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0,
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};
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static devclass_t ata_macio_devclass;
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DRIVER_MODULE(atamacio, macio, ata_macio_driver, ata_macio_devclass, 0, 0);
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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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if (strcmp(type, "ata") != 0)
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return (ENXIO);
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/* Print keylargo/pangea ??? */
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device_set_desc(dev, "Mac-IO ATA Controller");
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return (0);
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}
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static int
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ata_macio_attach(device_t dev)
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{
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/*
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* Add a single child per controller. Should be able
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* to add two
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*/
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device_add_child(dev, "ata",
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devclass_find_free_unit(ata_devclass, 0));
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return (bus_generic_attach(dev));
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}
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static int
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ata_macio_print_child(device_t dev, device_t child)
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{
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int retval = 0;
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retval += bus_print_child_header(dev, child);
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retval += bus_print_child_footer(dev, child);
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return (retval);
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}
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/* offset to control registers from base */
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#define ATA_MACIO_ALTOFFSET 0x160
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struct resource *
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ata_macio_alloc_resource(device_t dev, device_t child, int type, int *rid,
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u_long start, u_long end, u_long count, u_int flags)
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{
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struct resource *res = NULL;
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int myrid;
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u_int *ofw_regs;
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ofw_regs = macio_get_regs(dev);
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/*
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* The offset for the register bank is in the first ofw register,
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* with the base address coming from the parent macio bus (but
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* accessible via the ata-macio child)
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*/
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if (type == SYS_RES_IOPORT) {
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switch (*rid) {
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case ATA_IOADDR_RID:
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myrid = 0;
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start = ofw_regs[0];
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end = start + (ATA_IOSIZE << 4) - 1;
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count = ATA_IOSIZE << 4;
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res = BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
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SYS_RES_IOPORT, &myrid,
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start, end, count,
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PPC_BUS_SPARSE4 | flags);
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break;
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case ATA_ALTADDR_RID:
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myrid = 0;
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start = ofw_regs[0] + ATA_MACIO_ALTOFFSET;
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end = start + (ATA_ALTIOSIZE << 4) - 1;
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count = ATA_ALTIOSIZE << 4;
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res = BUS_ALLOC_RESOURCE(device_get_parent(dev), child,
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SYS_RES_IOPORT, &myrid,
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start, end, count,
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PPC_BUS_SPARSE4 | flags);
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break;
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case ATA_BMADDR_RID:
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/* looks difficult to support DBDMA in FreeBSD... */
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break;
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}
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return (res);
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} else if (type == SYS_RES_IRQ && *rid == ATA_IRQ_RID) {
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/*
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* Pass this on to the parent, using the IRQ from the
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* ATA pseudo-bus resource
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*/
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res = bus_generic_rl_alloc_resource(device_get_parent(dev),
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dev, SYS_RES_IRQ, 0, 0, ~0, 1, flags);
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return (res);
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} else {
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return (NULL);
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}
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}
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static int
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ata_macio_release_resource(device_t dev, device_t child, int type, int rid,
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struct resource *r)
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{
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printf("macio: release resource\n");
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return (0);
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}
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/*
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* Define the actual ATA device. This is a sub-bus to the ata-macio layer
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* to allow the higher layer bus to massage the resource allocation.
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*/
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static int ata_macio_sub_probe(device_t dev);
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static device_method_t ata_macio_sub_methods[] = {
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/* Device interface */
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DEVMETHOD(device_probe, ata_macio_sub_probe),
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DEVMETHOD(device_attach, ata_attach),
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DEVMETHOD(device_detach, ata_detach),
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DEVMETHOD(device_resume, ata_resume),
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{ 0, 0 }
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};
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static driver_t ata_macio_sub_driver = {
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"ata",
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ata_macio_sub_methods,
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sizeof(struct ata_channel),
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};
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DRIVER_MODULE(ata, atamacio, ata_macio_sub_driver, ata_devclass, 0, 0);
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static int
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ata_macio_sub_probe(device_t dev)
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{
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struct ata_channel *ch = device_get_softc(dev);
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ch->unit = 0;
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ch->flags = ATA_USE_16BIT;
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return ata_probe(dev);
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}
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