/*-
* Copyright (c) 2003 Jake Burkholder.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <dev/ofw/openfirm.h>
#include <machine/bus.h>
#include <machine/nexusvar.h>
#include <machine/ofw_upa.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <sparc64/central/centralvar.h>
#include <sparc64/sbus/ofw_sbus.h>
#include <sparc64/sbus/sbusreg.h>
struct central_devinfo {
char *cdi_name;
char *cdi_type;
phandle_t cdi_node;
};
struct central_softc {
phandle_t sc_node;
int sc_nrange;
struct sbus_ranges *sc_ranges;
};
static int central_probe(device_t dev);
static int central_attach(device_t dev);
static void central_probe_nomatch(device_t dev, device_t child);
static int central_read_ivar(device_t, device_t, int, uintptr_t *);
static int central_write_ivar(device_t, device_t, int, uintptr_t);
static struct resource *central_alloc_resource(device_t, device_t, int, int *,
u_long, u_long, u_long, u_int);
static device_method_t central_methods[] = {
/* Device interface. */
DEVMETHOD(device_probe, central_probe),
DEVMETHOD(device_attach, central_attach),
/* Bus interface. */
DEVMETHOD(bus_print_child, bus_generic_print_child),
DEVMETHOD(bus_probe_nomatch, central_probe_nomatch),
DEVMETHOD(bus_read_ivar, central_read_ivar),
DEVMETHOD(bus_write_ivar, central_write_ivar),
DEVMETHOD(bus_setup_intr, bus_generic_setup_intr),
DEVMETHOD(bus_teardown_intr, bus_generic_teardown_intr),
DEVMETHOD(bus_alloc_resource, central_alloc_resource),
DEVMETHOD(bus_release_resource, bus_generic_release_resource),
DEVMETHOD(bus_activate_resource, bus_generic_activate_resource),
DEVMETHOD(bus_deactivate_resource, bus_generic_deactivate_resource),
{ NULL, NULL }
};
static driver_t central_driver = {
"central",
central_methods,
sizeof(struct central_softc),
};
static devclass_t central_devclass;
DRIVER_MODULE(central, nexus, central_driver, central_devclass, 0, 0);
static int
central_probe(device_t dev)
{
if (strcmp(nexus_get_name(dev), "central") == 0) {
device_set_desc(dev, "central");
return (0);
}
return (ENXIO);
}
static int
central_attach(device_t dev)
{
struct central_devinfo *cdi;
struct central_softc *sc;
phandle_t child;
phandle_t node;
device_t cdev;
char *name;
sc = device_get_softc(dev);
node = nexus_get_node(dev);
sc->sc_node = node;
sc->sc_nrange = OF_getprop_alloc(node, "ranges",
sizeof(*sc->sc_ranges), (void **)&sc->sc_ranges);
if (sc->sc_nrange == -1) {
device_printf(dev, "can't get ranges");
return (ENXIO);
}
for (child = OF_child(node); child != 0; child = OF_peer(child)) {
if ((OF_getprop_alloc(child, "name", 1, (void **)&name)) == -1)
continue;
cdev = device_add_child(dev, NULL, -1);
if (cdev != NULL) {
cdi = malloc(sizeof(*cdi), M_DEVBUF,
M_WAITOK | M_ZERO);
cdi->cdi_name = name;
cdi->cdi_node = child;
OF_getprop_alloc(child, "device_type", 1,
(void **)&cdi->cdi_type);
device_set_ivars(cdev, cdi);
} else
free(name, M_OFWPROP);
}
return (bus_generic_attach(dev));
}
static void
central_probe_nomatch(device_t dev, device_t child)
{
struct central_devinfo *cdi;
cdi = device_get_ivars(child);
device_printf(dev, "<%s> type %s (no driver attached)\n",
cdi->cdi_name, cdi->cdi_type != NULL ? cdi->cdi_type : "unknown");
}
static int
central_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
{
struct central_devinfo *cdi;
if ((cdi = device_get_ivars(child)) == 0)
return (ENOENT);
switch (which) {
case CENTRAL_IVAR_NAME:
*result = (uintptr_t)cdi->cdi_name;
break;
case CENTRAL_IVAR_NODE:
*result = cdi->cdi_node;
break;
case CENTRAL_IVAR_TYPE:
*result = (uintptr_t)cdi->cdi_type;
break;
default:
return (ENOENT);
}
return (0);
}
static int
central_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
{
struct central_devinfo *cdi;
if ((cdi = device_get_ivars(child)) == 0)
return (ENOENT);
switch (which) {
case CENTRAL_IVAR_NAME:
case CENTRAL_IVAR_NODE:
case CENTRAL_IVAR_TYPE:
return (EINVAL);
default:
return (ENOENT);
}
return (0);
}
static struct resource *
central_alloc_resource(device_t bus, device_t child, int type, int *rid,
u_long start, u_long end, u_long count, u_int flags)
{
struct central_softc *sc;
struct resource *res;
bus_addr_t coffset;
bus_addr_t cend;
bus_addr_t phys;
int i;
if (type != SYS_RES_MEMORY) {
return (bus_generic_alloc_resource(bus, child, type, rid,
start, end, count, flags));
}
res = NULL;
sc = device_get_softc(bus);
for (i = 0; i < sc->sc_nrange; i++) {
coffset = sc->sc_ranges[i].coffset;
cend = coffset + sc->sc_ranges[i].size - 1;
if (start >= coffset && end <= cend) {
start -= coffset;
end -= coffset;
phys = sc->sc_ranges[i].poffset |
((bus_addr_t)sc->sc_ranges[i].pspace << 32);
res = bus_generic_alloc_resource(bus, child, type,
rid, phys + start, phys + end, count, flags);
break;
}
}
return (res);
}
