3e9a158ce7
resist easy conversion since they implement a great deal of their attach logic inside probe(). Some of this could be fixed by moving it to attach(), but some requires something more subtle than BUS_PROBE_NOWILDCARD.
160 lines
4.1 KiB
C
160 lines
4.1 KiB
C
/*-
|
|
* 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);
|