319 lines
8.4 KiB
C
319 lines
8.4 KiB
C
/*
|
|
* Copyright 2002 by Peter Grehan. All rights reserved.
|
|
*
|
|
* 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. 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
/*
|
|
* Mac-io ATA controller
|
|
*/
|
|
#include "opt_ata.h"
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/malloc.h>
|
|
#include <machine/stdarg.h>
|
|
#include <machine/resource.h>
|
|
#include <machine/bus.h>
|
|
#include <sys/rman.h>
|
|
#include <sys/ata.h>
|
|
#include <dev/ata/ata-all.h>
|
|
|
|
#include <dev/ofw/openfirm.h>
|
|
#include <powerpc/powermac/maciovar.h>
|
|
|
|
struct ata_macio_softc {
|
|
struct resource *sc_memres;
|
|
int sc_memrid;
|
|
bus_space_tag_t sc_bt;
|
|
bus_space_handle_t sc_bh;
|
|
struct rman sc_mem_rman;
|
|
};
|
|
|
|
/*
|
|
* Define the macio ata bus attachment. This creates a pseudo-bus that
|
|
* the ATA device can be attached to
|
|
*/
|
|
static int ata_macio_attach(device_t dev);
|
|
static int ata_macio_probe(device_t dev);
|
|
static int ata_macio_print_child(device_t dev, device_t child);
|
|
struct resource *ata_macio_alloc_resource(device_t, device_t, int, int *,
|
|
u_long, u_long, u_long, u_int);
|
|
static int ata_macio_release_resource(device_t, device_t, int, int,
|
|
struct resource *);
|
|
|
|
static device_method_t ata_macio_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, ata_macio_probe),
|
|
DEVMETHOD(device_attach, ata_macio_attach),
|
|
DEVMETHOD(device_shutdown, bus_generic_shutdown),
|
|
DEVMETHOD(device_suspend, bus_generic_suspend),
|
|
DEVMETHOD(device_resume, bus_generic_resume),
|
|
|
|
/* Bus methods */
|
|
DEVMETHOD(bus_print_child, ata_macio_print_child),
|
|
DEVMETHOD(bus_alloc_resource, ata_macio_alloc_resource),
|
|
DEVMETHOD(bus_release_resource, ata_macio_release_resource),
|
|
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
|
|
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
|
|
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
|
|
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t ata_macio_driver = {
|
|
"atamacio",
|
|
ata_macio_methods,
|
|
sizeof(struct ata_macio_softc),
|
|
};
|
|
|
|
static devclass_t ata_macio_devclass;
|
|
|
|
DRIVER_MODULE(atamacio, macio, ata_macio_driver, ata_macio_devclass, 0, 0);
|
|
|
|
|
|
static int
|
|
ata_macio_probe(device_t dev)
|
|
{
|
|
char *type = macio_get_devtype(dev);
|
|
|
|
if (strcmp(type, "ata") != 0)
|
|
return (ENXIO);
|
|
|
|
/* Print keylargo/pangea ??? */
|
|
device_set_desc(dev, "MacIO ATA Controller");
|
|
return (0);
|
|
}
|
|
|
|
|
|
static int
|
|
ata_macio_attach(device_t dev)
|
|
{
|
|
struct ata_macio_softc *sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
|
|
sc->sc_memrid = 0;
|
|
sc->sc_memres = bus_alloc_resource(dev, SYS_RES_MEMORY, &sc->sc_memrid,
|
|
0, ~1, 1, RF_ACTIVE | PPC_BUS_SPARSE4);
|
|
if (sc->sc_memres == NULL) {
|
|
device_printf(dev, "could not allocate memory\n");
|
|
return (ENXIO);
|
|
}
|
|
|
|
sc->sc_bt = rman_get_bustag(sc->sc_memres);
|
|
sc->sc_bh = rman_get_bushandle(sc->sc_memres);
|
|
|
|
sc->sc_mem_rman.rm_type = RMAN_ARRAY;
|
|
sc->sc_mem_rman.rm_descr = device_get_nameunit(dev);
|
|
if (rman_init(&sc->sc_mem_rman) != 0) {
|
|
device_printf(dev, "failed to init memory rman\n");
|
|
bus_release_resource(dev, SYS_RES_MEMORY, sc->sc_memrid,
|
|
sc->sc_memres);
|
|
return (ENXIO);
|
|
}
|
|
rman_manage_region(&sc->sc_mem_rman, 0, rman_get_size(sc->sc_memres));
|
|
|
|
/*
|
|
* Add a single child per controller. Should be able
|
|
* to add two
|
|
*/
|
|
device_add_child(dev, "ata",
|
|
devclass_find_free_unit(ata_devclass, 0));
|
|
|
|
return (bus_generic_attach(dev));
|
|
}
|
|
|
|
|
|
static int
|
|
ata_macio_print_child(device_t dev, device_t child)
|
|
{
|
|
int retval = 0;
|
|
|
|
retval += bus_print_child_header(dev, child);
|
|
retval += bus_print_child_footer(dev, child);
|
|
|
|
return (retval);
|
|
}
|
|
|
|
/* offset to control registers from base */
|
|
#define ATA_MACIO_ALTOFFSET 0x160
|
|
|
|
struct resource *
|
|
ata_macio_alloc_resource(device_t dev, device_t child, int type, int *rid,
|
|
u_long start, u_long end, u_long count, u_int flags)
|
|
{
|
|
struct ata_macio_softc *sc;
|
|
struct resource *res;
|
|
int myrid;
|
|
bus_space_handle_t bh;
|
|
|
|
sc = device_get_softc(dev);
|
|
res = NULL;
|
|
|
|
/*
|
|
* The offset for the register bank is in the first ofw register,
|
|
* with the base address coming from the parent macio bus (but
|
|
* accessible via the ata-macio child)
|
|
*/
|
|
if (type == SYS_RES_IOPORT) {
|
|
switch (*rid) {
|
|
case ATA_IOADDR_RID:
|
|
start = 0;
|
|
end = (ATA_IOSIZE << 4) - 1;
|
|
count = ATA_IOSIZE << 4;
|
|
res = rman_reserve_resource(&sc->sc_mem_rman, start,
|
|
end, count, flags | PPC_BUS_SPARSE4, child);
|
|
if (res == NULL) {
|
|
device_printf(dev, "rman_reserve failed\n");
|
|
return (NULL);
|
|
}
|
|
|
|
rman_set_bustag(res, sc->sc_bt);
|
|
bus_space_subregion(sc->sc_bt, sc->sc_bh,
|
|
rman_get_start(res), rman_get_size(res), &bh);
|
|
rman_set_bushandle(res, bh);
|
|
rman_set_rid(res, ATA_IOADDR_RID);
|
|
|
|
break;
|
|
|
|
case ATA_ALTADDR_RID:
|
|
start = ATA_MACIO_ALTOFFSET;
|
|
end = start + (ATA_ALTIOSIZE << 4) - 1;
|
|
count = ATA_ALTIOSIZE << 4;
|
|
|
|
res = rman_reserve_resource(&sc->sc_mem_rman, start,
|
|
end, count, flags | PPC_BUS_SPARSE4, child);
|
|
if (res == NULL) {
|
|
device_printf(dev, "rman_reserve failed\n");
|
|
return (NULL);
|
|
}
|
|
|
|
rman_set_bustag(res, sc->sc_bt);
|
|
bus_space_subregion(sc->sc_bt, sc->sc_bh,
|
|
rman_get_start(res), rman_get_size(res), &bh);
|
|
rman_set_bushandle(res, bh);
|
|
rman_set_rid(res, ATA_ALTADDR_RID);
|
|
|
|
break;
|
|
|
|
case ATA_BMADDR_RID:
|
|
/* looks difficult to support DBDMA in FreeBSD... */
|
|
break;
|
|
}
|
|
return (res);
|
|
|
|
} else if (type == SYS_RES_IRQ && *rid == ATA_IRQ_RID) {
|
|
/*
|
|
* Pass this on to the parent, using the IRQ from the
|
|
* ATA pseudo-bus resource
|
|
*/
|
|
myrid = 0;
|
|
res = bus_generic_rl_alloc_resource(device_get_parent(dev),
|
|
dev, SYS_RES_IRQ, &myrid, 0, ~0, 1, flags);
|
|
return (res);
|
|
|
|
} else {
|
|
return (NULL);
|
|
}
|
|
}
|
|
|
|
|
|
static int
|
|
ata_macio_release_resource(device_t dev, device_t child, int type, int rid,
|
|
struct resource *r)
|
|
{
|
|
|
|
if (type == SYS_RES_IRQ)
|
|
return (bus_release_resource(device_get_parent(dev), type,
|
|
rid, r));
|
|
|
|
if (type == SYS_RES_IOPORT || type == SYS_RES_MEMORY)
|
|
return (rman_release_resource(r));
|
|
|
|
return (ENXIO);
|
|
}
|
|
|
|
|
|
/*
|
|
* Define the actual ATA device. This is a sub-bus to the ata-macio layer
|
|
* to allow the higher layer bus to massage the resource allocation.
|
|
*/
|
|
|
|
static int ata_macio_sub_probe(device_t dev);
|
|
|
|
static device_method_t ata_macio_sub_methods[] = {
|
|
/* Device interface */
|
|
DEVMETHOD(device_probe, ata_macio_sub_probe),
|
|
DEVMETHOD(device_attach, ata_attach),
|
|
DEVMETHOD(device_detach, ata_detach),
|
|
DEVMETHOD(device_resume, ata_resume),
|
|
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t ata_macio_sub_driver = {
|
|
"ata",
|
|
ata_macio_sub_methods,
|
|
sizeof(struct ata_channel),
|
|
};
|
|
|
|
DRIVER_MODULE(ata, atamacio, ata_macio_sub_driver, ata_devclass, 0, 0);
|
|
|
|
static void
|
|
ata_macio_locknoop(struct ata_channel *ch, int type)
|
|
{
|
|
/* XXX SMP ? */
|
|
}
|
|
|
|
static void
|
|
ata_macio_setmode(struct ata_device *atadev, int mode)
|
|
{
|
|
atadev->mode = ATA_PIO;
|
|
}
|
|
|
|
static int
|
|
ata_macio_sub_probe(device_t dev)
|
|
{
|
|
struct ata_channel *ch;
|
|
|
|
ch = device_get_softc(dev);
|
|
|
|
ch->unit = 0;
|
|
ch->flags |= ATA_USE_16BIT;
|
|
ch->locking = ata_macio_locknoop;
|
|
ch->device[MASTER].setmode = ata_macio_setmode;
|
|
ch->device[SLAVE].setmode = ata_macio_setmode;
|
|
|
|
return (ata_probe(dev));
|
|
}
|
|
|
|
|
|
|