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/*-
* Copyright (c) 2015 Semihalf.
* Copyright (c) 2015 Stormshield.
* 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/bus.h>
#include <sys/conf.h>
#include <sys/rman.h>
#include <sys/types.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/resource.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <machine/fdt.h>
#include <machine/smp.h>
#include <dev/ofw/ofw_bus_subr.h>
#include <arm/mv/mvreg.h>
#include "pmsu.h"
static struct resource_spec pmsu_spec[] = {
{ SYS_RES_MEMORY, 0, RF_ACTIVE },
{ -1, 0 }
};
struct pmsu_softc {
device_t dev;
struct resource *res;
};
static int pmsu_probe(device_t dev);
static int pmsu_attach(device_t dev);
static int pmsu_detach(device_t dev);
static device_method_t pmsu_methods[] = {
DEVMETHOD(device_probe, pmsu_probe),
DEVMETHOD(device_attach, pmsu_attach),
DEVMETHOD(device_detach, pmsu_detach),
{ 0, 0 }
};
static driver_t pmsu_driver = {
"pmsu",
pmsu_methods,
sizeof(struct pmsu_softc)
};
static devclass_t pmsu_devclass;
DRIVER_MODULE(pmsu, simplebus, pmsu_driver, pmsu_devclass, 0, 0);
DRIVER_MODULE(pmsu, ofwbus, pmsu_driver, pmsu_devclass, 0, 0);
static int
pmsu_probe(device_t dev)
{
if (!ofw_bus_status_okay(dev))
return (ENXIO);
if (!ofw_bus_is_compatible(dev, "marvell,armada-380-pmsu"))
return (ENXIO);
device_set_desc(dev, "Power Management Service Unit");
return (BUS_PROBE_DEFAULT);
}
static int
pmsu_attach(device_t dev)
{
struct pmsu_softc *sc;
int err;
sc = device_get_softc(dev);
sc->dev = dev;
err = bus_alloc_resources(dev, pmsu_spec, &sc->res);
if (err != 0) {
device_printf(dev, "could not allocate resources\n");
return (ENXIO);
}
return (0);
}
static int
pmsu_detach(device_t dev)
{
struct pmsu_softc *sc;
sc = device_get_softc(dev);
bus_release_resources(dev, pmsu_spec, &sc->res);
return (0);
}
#ifdef SMP
int
pmsu_boot_secondary_cpu(void)
{
bus_space_handle_t vaddr;
int rv;
rv = bus_space_map(fdtbus_bs_tag, (bus_addr_t)MV_PMSU_BASE, MV_PMSU_REGS_LEN,
0, &vaddr);
if (rv != 0)
return (rv);
/* Boot cpu1 */
bus_space_write_4(fdtbus_bs_tag, vaddr, PMSU_BOOT_ADDR_REDIRECT_OFFSET(1),
pmap_kextract((vm_offset_t)mpentry));
cpu_idcache_wbinv_all();
cpu_l2cache_wbinv_all();
armv7_sev();
bus_space_unmap(fdtbus_bs_tag, vaddr, MV_PMSU_REGS_LEN);
return (0);
}
#endif
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