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/*-
* Copyright (c) 2007 Bruce M. Simpson.
* 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.
*/
/*
* Child driver for ChipCommon core.
* This is not MI code at the moment.
* Two 16C550 compatible UARTs live here. On the WGT634U, uart1 is the
* system console, and uart0 is not pinned out.
* Because their presence is conditional, they should probably
* be attached from here.
* GPIO lives here.
* The hardware watchdog lives here.
* Clock control registers live here.
* You don't need to read them to determine the clock speed on the 5365,
* which is always 200MHz and thus may be hardcoded (for now).
* Flash config registers live here. There may or may not be system flash.
* The external interface bus lives here (conditionally).
* There is a JTAG interface here which may be used to attach probes to
* the SoC for debugging.
*/
#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/rman.h>
#include <sys/malloc.h>
#include <machine/bus.h>
#include <dev/siba/sibavar.h>
#include <dev/siba/sibareg.h>
#include <dev/siba/siba_ids.h>
static int siba_cc_attach(device_t);
static int siba_cc_probe(device_t);
static void siba_cc_intr(void *v);
static int
siba_cc_probe(device_t dev)
{
if (siba_get_vendor(dev) == SIBA_VID_BROADCOM &&
siba_get_device(dev) == SIBA_DEVID_CHIPCOMMON) {
device_set_desc(dev, "ChipCommon core");
return (BUS_PROBE_DEFAULT);
}
return (ENXIO);
}
struct siba_cc_softc {
void *notused;
};
static int
siba_cc_attach(device_t dev)
{
//struct siba_cc_softc *sc = device_get_softc(dev);
struct resource *mem;
struct resource *irq;
int rid;
/*
* Allocate the resources which the parent bus has already
* determined for us.
* TODO: interrupt routing
*/
#define MIPS_MEM_RID 0x20
rid = MIPS_MEM_RID;
mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE);
if (mem == NULL) {
device_printf(dev, "unable to allocate memory\n");
return (ENXIO);
}
rid = 0;
irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 0);
if (irq == NULL) {
device_printf(dev, "unable to allocate irq\n");
return (ENXIO);
}
/* now setup the interrupt */
/* may be fast, exclusive or mpsafe at a later date */
/*
* XXX is this interrupt line in ChipCommon used for anything
* other than the uart? in that case we shouldn't hog it ourselves
* and let uart claim it to avoid polled mode.
*/
int err;
void *cookie;
err = bus_setup_intr(dev, irq, INTR_TYPE_TTY, NULL, siba_cc_intr, NULL,
&cookie);
if (err != 0) {
device_printf(dev, "unable to setup intr\n");
return (ENXIO);
}
/* TODO: attach uart child */
return (0);
}
static void
siba_cc_intr(void *v)
{
}
static device_method_t siba_cc_methods[] = {
/* Device interface */
DEVMETHOD(device_attach, siba_cc_attach),
DEVMETHOD(device_probe, siba_cc_probe),
{0, 0},
};
static driver_t siba_cc_driver = {
"siba_cc",
siba_cc_methods,
sizeof(struct siba_softc),
};
static devclass_t siba_cc_devclass;
DRIVER_MODULE(siba_cc, siba, siba_cc_driver, siba_cc_devclass, 0, 0);
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