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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.
*/
/*
* Driver to swallow up memory ranges reserved by CFE platform firmware.
* CFE on Sentry5 doesn't specify reserved ranges, so this is not useful
* at the present time.
* TODO: Don't attach this off nexus.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/socket.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <dev/cfe/cfe_api.h>
#include <dev/cfe/cfe_error.h>
#define MAX_CFE_RESERVATIONS 16
struct cferes_softc {
int rnum;
int rid[MAX_CFE_RESERVATIONS];
struct resource *res[MAX_CFE_RESERVATIONS];
};
static int
cferes_probe(device_t dev)
{
return (BUS_PROBE_NOWILDCARD);
}
static int
cferes_attach(device_t dev)
{
return (0);
}
static void
cferes_identify(driver_t* driver, device_t parent)
{
device_t child;
int i;
struct resource *res;
int result;
int rid;
struct cferes_softc *sc;
uint64_t addr, len, type;
child = BUS_ADD_CHILD(parent, 100, "cferes", -1);
device_set_driver(child, driver);
sc = device_get_softc(child);
sc->rnum = 0;
for (i = 0; i < ~0U; i++) {
result = cfe_enummem(i, CFE_FLG_FULL_ARENA, &addr, &len, &type);
if (result < 0)
break;
if (type != CFE_MI_RESERVED) {
if (bootverbose)
printf("%s: skipping non reserved range 0x%0jx(%jd)\n",
device_getnameunit(child),
(uintmax_t)addr, (uintmax_t)len);
continue;
}
bus_set_resource(child, SYS_RES_MEMORY, sc->rnum, addr, len);
rid = sc->rnum;
res = bus_alloc_resource_any(child, SYS_RES_MEMORY, &rid, 0);
if (res == NULL) {
bus_delete_resource(child, SYS_RES_MEMORY, sc->rnum);
continue;
}
sc->rid[sc->rnum] = rid;
sc->res[sc->rnum] = res;
sc->rnum++;
if (sc->rnum == MAX_CFE_RESERVATIONS)
break;
}
if (sc->rnum == 0) {
device_delete_child(parent, child);
return;
}
device_set_desc(child, "CFE reserved memory");
}
static int
cferes_detach(device_t dev)
{
int i;
struct cferes_softc *sc = device_get_softc(dev);
for (i = 0; i < sc->rnum; i++) {
bus_release_resource(dev, SYS_RES_MEMORY, sc->rid[i],
sc->res[i]);
}
return (0);
}
static device_method_t cferes_methods[] = {
/* Device interface */
DEVMETHOD(device_identify, cferes_identify),
DEVMETHOD(device_probe, cferes_probe),
DEVMETHOD(device_attach, cferes_attach),
DEVMETHOD(device_detach, cferes_detach),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
{ 0, 0 }
};
static driver_t cferes_driver = {
"cferes",
cferes_methods,
sizeof (struct cferes_softc)
};
static devclass_t cferes_devclass;
DRIVER_MODULE(cfe, nexus, cferes_driver, cferes_devclass, 0, 0);
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