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/*-
* Copyright (c) 2006 Benno Rice. 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 ``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.
*
* from: FreeBSD: //depot/projects/arm/src/sys/arm/xscale/pxa2x0/pxa2x0_obio.c, rev 1
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/malloc.h>
#include <sys/rman.h>
#include <machine/bus.h>
#include <machine/intr.h>
#include <arm/mv/mvvar.h>
#include <arm/mv/mvreg.h>
static void mbus_identify(driver_t *, device_t);
static int mbus_probe(device_t);
static int mbus_attach(device_t);
static void
mbus_identify(driver_t *driver, device_t parent)
{
BUS_ADD_CHILD(parent, 0, "mbus", 0);
}
static int
mbus_probe(device_t dev)
{
device_set_desc(dev, "Marvell Internal Bus (Mbus)");
return (0);
}
static int
mbus_attach(device_t dev)
{
struct obio_softc *sc;
struct obio_device *od;
int i;
device_t child;
sc = device_get_softc(dev);
sc->obio_bst = obio_tag;
sc->obio_mem.rm_type = RMAN_ARRAY;
sc->obio_mem.rm_descr = "Marvell OBIO Memory";
if (rman_init(&sc->obio_mem) != 0)
panic("mbus_attach: failed to init obio mem rman");
if (rman_manage_region(&sc->obio_mem, 0, ~0) != 0)
panic("mbus_attach: failed to set up obio mem rman");
sc->obio_irq.rm_type = RMAN_ARRAY;
sc->obio_irq.rm_descr = "Marvell OBIO IRQ";
if (rman_init(&sc->obio_irq) != 0)
panic("mbus_attach: failed to init obio irq rman");
if (rman_manage_region(&sc->obio_irq, 0, NIRQ - 1) != 0)
panic("mbus_attach: failed to set up obio irq rman");
sc->obio_gpio.rm_type = RMAN_ARRAY;
sc->obio_gpio.rm_descr = "Marvell GPIO";
if (rman_init(&sc->obio_gpio) != 0)
panic("mbus_attach: failed to init gpio rman");
if (rman_manage_region(&sc->obio_gpio, 0, MV_GPIO_MAX_NPINS - 1) != 0)
panic("mbus_attach: failed to set up gpio rman");
for (od = obio_devices; od->od_name != NULL; od++) {
if (soc_power_ctrl_get(od->od_pwr_mask) != od->od_pwr_mask)
continue;
resource_list_init(&od->od_resources);
resource_list_add(&od->od_resources, SYS_RES_MEMORY, 0,
od->od_base, od->od_base + od->od_size, od->od_size);
for (i = 0; od->od_irqs[i] != -1; i++) {
resource_list_add(&od->od_resources, SYS_RES_IRQ, i,
od->od_irqs[i], od->od_irqs[i], 1);
}
for (i = 0; od->od_gpio[i] != -1; i++) {
resource_list_add(&od->od_resources, SYS_RES_GPIO, i,
od->od_gpio[i], od->od_gpio[i], 1);
}
child = device_add_child(dev, od->od_name, -1);
device_set_ivars(child, od);
}
bus_generic_probe(dev);
bus_generic_attach(dev);
return (0);
}
static int
mbus_print_child(device_t dev, device_t child)
{
struct obio_device *od;
int rv;
od = (struct obio_device *)device_get_ivars(child);
if (od == NULL)
panic("Unknown device on %s", device_get_nameunit(dev));
rv = 0;
rv += bus_print_child_header(dev, child);
rv += resource_list_print_type(&od->od_resources, "at mem",
SYS_RES_MEMORY, "0x%08lx");
rv += resource_list_print_type(&od->od_resources, "irq",
SYS_RES_IRQ, "%ld");
rv += resource_list_print_type(&od->od_resources, "gpio",
SYS_RES_GPIO, "%ld");
if (device_get_flags(child))
rv += printf(" flags %#x", device_get_flags(child));
rv += bus_print_child_footer(dev, child);
return (rv);
}
static int
mbus_setup_intr(device_t dev, device_t child, struct resource *ires, int flags,
driver_filter_t *filt, driver_intr_t *intr, void *arg, void **cookiep)
{
struct obio_softc *sc;
int error;
sc = (struct obio_softc *)device_get_softc(dev);
if (rman_is_region_manager(ires, &sc->obio_gpio)) {
error = mv_gpio_setup_intrhandler(
device_get_nameunit(child), filt, intr, arg,
rman_get_start(ires), flags, cookiep);
if (error != 0)
return (error);
mv_gpio_intr_unmask(rman_get_start(ires));
return (0);
}
BUS_SETUP_INTR(device_get_parent(dev), child, ires, flags, filt, intr, arg,
cookiep);
arm_unmask_irq(rman_get_start(ires));
return (0);
}
static int
mbus_teardown_intr(device_t dev, device_t child, struct resource *ires, void *cookie)
{
return (BUS_TEARDOWN_INTR(device_get_parent(dev), child, ires, cookie));
}
static int
mbus_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
{
struct obio_device *od;
od = (struct obio_device *)device_get_ivars(child);
switch (which) {
case MBUS_IVAR_BASE:
*((u_long *)result) = od->od_base;
break;
default:
return (ENOENT);
}
return (0);
}
static struct resource_list *
mbus_get_resource_list(device_t dev, device_t child)
{
struct obio_device *od;
od = (struct obio_device *)device_get_ivars(child);
if (od == NULL)
return (NULL);
return (&od->od_resources);
}
static struct resource *
mbus_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 obio_softc *sc;
struct obio_device *od;
struct resource *rv;
struct resource_list *rl;
struct resource_list_entry *rle = NULL;
struct rman *rm;
int needactivate;
sc = (struct obio_softc *)device_get_softc(dev);
if (type == SYS_RES_IRQ && IS_GPIO_IRQ(start)) {
type = SYS_RES_GPIO;
start = IRQ2GPIO(start);
}
switch (type) {
case SYS_RES_IRQ:
rm = &sc->obio_irq;
break;
case SYS_RES_MEMORY:
rm = &sc->obio_mem;
break;
case SYS_RES_GPIO:
rm = &sc->obio_gpio;
break;
default:
return (NULL);
}
if (device_get_parent(child) == dev) {
od = (struct obio_device *)device_get_ivars(child);
rl = &od->od_resources;
rle = resource_list_find(rl, type, *rid);
if (rle->res != NULL)
panic("mbus_alloc_resource: resource is busy");
}
if (rle) {
start = rle->start;
end = rle->end;
count = rle->count;
}
needactivate = flags & RF_ACTIVE;
flags &= ~RF_ACTIVE;
rv = rman_reserve_resource(rm, start, end, count, flags, child);
if (rv == NULL)
return (NULL);
if (rle)
rle->res = rv;
rman_set_rid(rv, *rid);
if (type == SYS_RES_MEMORY) {
rman_set_bustag(rv, sc->obio_bst);
rman_set_bushandle(rv, start);
}
if (needactivate)
if (bus_activate_resource(child, type, *rid, rv)) {
rman_release_resource(rv);
return (NULL);
}
return (rv);
}
static int
mbus_release_resource(device_t dev, device_t child, int type, int rid,
struct resource *r)
{
struct obio_device *od;
struct resource_list *rl;
struct resource_list_entry *rle;
if (device_get_parent(child) == dev) {
od = (struct obio_device *)device_get_ivars(child);
rl = &od->od_resources;
rle = resource_list_find(rl, type, rid);
if (!rle)
panic("mbus_release_resource: can't find resource");
if (!rle->res)
panic("mbus_release_resource: resource entry is not busy");
r = rle->res;
rle->res = NULL;
}
rman_release_resource(r);
return (0);
}
static int
mbus_activate_resource(device_t dev, device_t child, int type, int rid,
struct resource *r)
{
return (rman_activate_resource(r));
}
static device_t
mbus_add_child(device_t bus, int order, const char *name, int unit)
{
struct obio_device *od;
device_t child;
od = malloc(sizeof(struct obio_device), M_DEVBUF, M_NOWAIT | M_ZERO);
if (!od)
return (0);
resource_list_init(&od->od_resources);
od->od_name = name;
child = device_add_child_ordered(bus, order, name, unit);
device_set_ivars(child, od);
return (child);
}
static device_method_t mbus_methods[] = {
DEVMETHOD(device_identify, mbus_identify),
DEVMETHOD(device_probe, mbus_probe),
DEVMETHOD(device_attach, mbus_attach),
DEVMETHOD(bus_add_child, mbus_add_child),
DEVMETHOD(bus_print_child, mbus_print_child),
DEVMETHOD(bus_read_ivar, mbus_read_ivar),
DEVMETHOD(bus_setup_intr, mbus_setup_intr),
DEVMETHOD(bus_teardown_intr, mbus_teardown_intr),
DEVMETHOD(bus_set_resource, bus_generic_rl_set_resource),
DEVMETHOD(bus_get_resource_list, mbus_get_resource_list),
DEVMETHOD(bus_alloc_resource, mbus_alloc_resource),
DEVMETHOD(bus_release_resource, mbus_release_resource),
DEVMETHOD(bus_activate_resource, mbus_activate_resource),
{0, 0}
};
static driver_t mbus_driver = {
"mbus",
mbus_methods,
sizeof(struct obio_softc),
};
static devclass_t mbus_devclass;
DRIVER_MODULE(mbus, nexus, mbus_driver, mbus_devclass, 0, 0);
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