134 lines
3.7 KiB
C
134 lines
3.7 KiB
C
/*-
|
|
* Copyright (c) 2012 Oleksandr Tymoshenko <gonzo@freebsd.org>
|
|
* 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.
|
|
*/
|
|
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/bus.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/ktr.h>
|
|
#include <sys/module.h>
|
|
#include <sys/rman.h>
|
|
#include <machine/bus.h>
|
|
#include <machine/intr.h>
|
|
|
|
#include <dev/fdt/fdt_common.h>
|
|
#include <dev/ofw/openfirm.h>
|
|
#include <dev/ofw/ofw_bus.h>
|
|
#include <dev/ofw/ofw_bus_subr.h>
|
|
|
|
#ifdef DEBUG
|
|
#define dprintf(fmt, args...) printf(fmt, ##args)
|
|
#else
|
|
#define dprintf(fmt, args...)
|
|
#endif
|
|
|
|
#define SIC_STATUS 0x00
|
|
#define SIC_RAWSTAT 0x04
|
|
#define SIC_ENABLE 0x08
|
|
#define SIC_ENSET 0x08
|
|
#define SIC_ENCLR 0x0C
|
|
#define SIC_SOFTINTSET 0x10
|
|
#define SIC_SOFTINTCLR 0x14
|
|
#define SIC_PICENABLE 0x20
|
|
#define SIC_PICENSET 0x20
|
|
#define SIC_PICENCLR 0x24
|
|
|
|
struct versatile_sic_softc {
|
|
device_t sc_dev;
|
|
struct resource * mem_res;
|
|
};
|
|
|
|
#define sic_read_4(sc, reg) \
|
|
bus_read_4(sc->mem_res, (reg))
|
|
#define sic_write_4(sc, reg, val) \
|
|
bus_write_4(sc->mem_res, (reg), (val))
|
|
|
|
static int
|
|
versatile_sic_probe(device_t dev)
|
|
{
|
|
if (!ofw_bus_is_compatible(dev, "arm,versatile-sic"))
|
|
return (ENXIO);
|
|
device_set_desc(dev, "ARM Versatile SIC");
|
|
return (BUS_PROBE_DEFAULT);
|
|
}
|
|
|
|
static int
|
|
versatile_sic_attach(device_t dev)
|
|
{
|
|
struct versatile_sic_softc *sc = device_get_softc(dev);
|
|
uint32_t pass_irqs;
|
|
int rid;
|
|
|
|
sc->sc_dev = dev;
|
|
|
|
/* Request memory resources */
|
|
rid = 0;
|
|
sc->mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
|
|
RF_ACTIVE);
|
|
if (sc->mem_res == NULL) {
|
|
device_printf(dev, "Error: could not allocate memory resources\n");
|
|
return (ENXIO);
|
|
}
|
|
|
|
/* Disable all interrupts on SIC */
|
|
sic_write_4(sc, SIC_ENCLR, 0xffffffff);
|
|
|
|
/*
|
|
* XXX: Enable IRQ3 for KMI
|
|
* Should be replaced by proper interrupts cascading
|
|
*/
|
|
sic_write_4(sc, SIC_ENSET, (1 << 3));
|
|
|
|
/*
|
|
* Let PCI and Ethernet interrupts pass through
|
|
* IRQ25, IRQ27..IRQ31
|
|
*/
|
|
pass_irqs = (0x1f << 27) | (1 << 25);
|
|
sic_write_4(sc, SIC_PICENSET, pass_irqs);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static device_method_t versatile_sic_methods[] = {
|
|
DEVMETHOD(device_probe, versatile_sic_probe),
|
|
DEVMETHOD(device_attach, versatile_sic_attach),
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t versatile_sic_driver = {
|
|
"sic",
|
|
versatile_sic_methods,
|
|
sizeof(struct versatile_sic_softc),
|
|
};
|
|
|
|
static devclass_t versatile_sic_devclass;
|
|
|
|
DRIVER_MODULE(sic, simplebus, versatile_sic_driver, versatile_sic_devclass, 0, 0);
|