6a347d023b
Make different bus attachments for Altera and Terasice device drivers share the same devclass_t. Sponsored by: DARPA, AFRL
119 lines
3.6 KiB
C
119 lines
3.6 KiB
C
/*-
|
|
* Copyright (c) 2012 Robert N. M. Watson
|
|
* All rights reserved.
|
|
*
|
|
* This software was developed by SRI International and the University of
|
|
* Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
|
|
* ("CTSRD"), as part of the DARPA CRASH research programme.
|
|
*
|
|
* 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/condvar.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/bio.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/module.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/rman.h>
|
|
#include <sys/systm.h>
|
|
|
|
#include <machine/bus.h>
|
|
#include <machine/resource.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>
|
|
|
|
#include <dev/terasic/de4led/terasic_de4led.h>
|
|
|
|
/*
|
|
* Nexus bus attachment for the 8-element LED on the Terasic DE-4 FPGA board,
|
|
* which is hooked up to the processor via a memory-mapped Avalon bus.
|
|
*/
|
|
static int
|
|
terasic_de4led_fdt_probe(device_t dev)
|
|
{
|
|
|
|
if (ofw_bus_is_compatible(dev, "sri-cambridge,de4led")) {
|
|
device_set_desc(dev, "Terasic DE4 8-element LED");
|
|
return (BUS_PROBE_DEFAULT);
|
|
}
|
|
return (ENXIO);
|
|
}
|
|
|
|
static int
|
|
terasic_de4led_fdt_attach(device_t dev)
|
|
{
|
|
struct terasic_de4led_softc *sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
sc->tdl_dev = dev;
|
|
sc->tdl_unit = device_get_unit(dev);
|
|
sc->tdl_rid = 0;
|
|
sc->tdl_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
|
|
&sc->tdl_rid, RF_ACTIVE);
|
|
if (sc->tdl_res == NULL) {
|
|
device_printf(dev, "couldn't map memory\n");
|
|
return (ENXIO);
|
|
}
|
|
terasic_de4led_attach(sc);
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
terasic_de4led_fdt_detach(device_t dev)
|
|
{
|
|
struct terasic_de4led_softc *sc;
|
|
|
|
sc = device_get_softc(dev);
|
|
KASSERT(sc->tdl_res != NULL, ("%s: resources not allocated",
|
|
__func__));
|
|
terasic_de4led_detach(sc);
|
|
bus_release_resource(dev, SYS_RES_MEMORY, sc->tdl_rid, sc->tdl_res);
|
|
return (0);
|
|
}
|
|
|
|
static device_method_t terasic_de4led_fdt_methods[] = {
|
|
DEVMETHOD(device_probe, terasic_de4led_fdt_probe),
|
|
DEVMETHOD(device_attach, terasic_de4led_fdt_attach),
|
|
DEVMETHOD(device_detach, terasic_de4led_fdt_detach),
|
|
{ 0, 0 }
|
|
};
|
|
|
|
static driver_t terasic_de4led_fdt_driver = {
|
|
"terasic_de4led",
|
|
terasic_de4led_fdt_methods,
|
|
sizeof(struct terasic_de4led_softc),
|
|
};
|
|
|
|
DRIVER_MODULE(terasic_de4led, simplebus, terasic_de4led_fdt_driver,
|
|
terasic_de4led_devclass, 0, 0);
|