diff options
| -rw-r--r-- | sys/dev/altera/avgen/altera_avgen_fdt.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/sys/dev/altera/avgen/altera_avgen_fdt.c b/sys/dev/altera/avgen/altera_avgen_fdt.c new file mode 100644 index 0000000..38dd446 --- /dev/null +++ b/sys/dev/altera/avgen/altera_avgen_fdt.c @@ -0,0 +1,143 @@ +/*- + * Copyright (c) 2012-2013 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/kernel.h> +#include <sys/lock.h> +#include <sys/malloc.h> +#include <sys/module.h> +#include <sys/mutex.h> +#include <sys/rman.h> +#include <sys/stat.h> +#include <sys/systm.h> +#include <sys/uio.h> + +#include <machine/bus.h> +#include <machine/resource.h> +#include <machine/vm.h> + +#include <vm/vm.h> + +#include <dev/altera/avgen/altera_avgen.h> + +static int +altera_avgen_nexus_probe(device_t dev) +{ + + device_set_desc(dev, "Generic Altera Avalon device attachment"); + return (BUS_PROBE_DEFAULT); +} + +static int +altera_avgen_nexus_attach(device_t dev) +{ + struct altera_avgen_softc *sc; + const char *str_fileio, *str_mmapio; + const char *str_devname; + int devunit, error; + + sc = device_get_softc(dev); + sc->avg_dev = dev; + sc->avg_unit = device_get_unit(dev); + + /* + * Query non-standard hints to find out what operations are permitted + * on the device, and whether it is cached. + */ + str_fileio = NULL; + str_mmapio = NULL; + str_devname = NULL; + devunit = -1; + sc->avg_width = 1; + error = resource_int_value(device_get_name(dev), device_get_unit(dev), + ALTERA_AVALON_STR_WIDTH, &sc->avg_width); + if (error != 0 && error != ENOENT) { + device_printf(dev, "invalid %s\n", ALTERA_AVALON_STR_WIDTH); + return (error); + } + (void)resource_string_value(device_get_name(dev), + device_get_unit(dev), ALTERA_AVALON_STR_FILEIO, &str_fileio); + (void)resource_string_value(device_get_name(dev), + device_get_unit(dev), ALTERA_AVALON_STR_MMAPIO, &str_mmapio); + (void)resource_string_value(device_get_name(dev), + device_get_unit(dev), ALTERA_AVALON_STR_DEVNAME, &str_devname); + (void)resource_int_value(device_get_name(dev), device_get_unit(dev), + ALTERA_AVALON_STR_DEVUNIT, &devunit); + + /* Memory allocation and checking. */ + sc->avg_rid = 0; + sc->avg_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, + &sc->avg_rid, RF_ACTIVE); + if (sc->avg_res == NULL) { + device_printf(dev, "couldn't map memory\n"); + return (ENXIO); + } + error = altera_avgen_attach(sc, str_fileio, str_mmapio, str_devname, + devunit); + if (error != 0) + bus_release_resource(dev, SYS_RES_MEMORY, sc->avg_rid, + sc->avg_res); + return (error); +} + +static int +altera_avgen_nexus_detach(device_t dev) +{ + struct altera_avgen_softc *sc; + + sc = device_get_softc(dev); + altera_avgen_detach(sc); + bus_release_resource(dev, SYS_RES_MEMORY, sc->avg_rid, sc->avg_res); + return (0); +} + +static device_method_t altera_avgen_nexus_methods[] = { + DEVMETHOD(device_probe, altera_avgen_nexus_probe), + DEVMETHOD(device_attach, altera_avgen_nexus_attach), + DEVMETHOD(device_detach, altera_avgen_nexus_detach), + { 0, 0 } +}; + +static driver_t altera_avgen_nexus_driver = { + "altera_avgen", + altera_avgen_nexus_methods, + sizeof(struct altera_avgen_softc), +}; + +static devclass_t altera_avgen_devclass; + +DRIVER_MODULE(avgen, nexus, altera_avgen_nexus_driver, altera_avgen_devclass, + 0, 0); |
