6a347d023b
Make different bus attachments for Altera and Terasice device drivers share the same devclass_t. Sponsored by: DARPA, AFRL
155 lines
4.6 KiB
C
155 lines
4.6 KiB
C
/*-
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* Copyright (c) 2012-2013 Robert N. M. Watson
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* All rights reserved.
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*
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* This software was developed by SRI International and the University of
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* Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
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* ("CTSRD"), as part of the DARPA CRASH research programme.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/condvar.h>
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#include <sys/conf.h>
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#include <sys/kernel.h>
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#include <sys/lock.h>
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#include <sys/malloc.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <sys/rman.h>
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#include <sys/stat.h>
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#include <sys/systm.h>
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#include <sys/uio.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <machine/vm.h>
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#include <vm/vm.h>
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#include <dev/fdt/fdt_common.h>
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#include <dev/ofw/openfirm.h>
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#include <dev/ofw/ofw_bus.h>
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#include <dev/ofw/ofw_bus_subr.h>
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#include <dev/altera/avgen/altera_avgen.h>
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static int
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altera_avgen_fdt_probe(device_t dev)
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{
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if (ofw_bus_is_compatible(dev, "sri-cambridge,avgen")) {
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device_set_desc(dev, "Generic Altera Avalon device attachment");
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return (BUS_PROBE_DEFAULT);
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}
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return (ENXIO);
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}
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static int
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altera_avgen_fdt_attach(device_t dev)
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{
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struct altera_avgen_softc *sc;
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char *str_fileio, *str_mmapio;
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char *str_devname;
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phandle_t node;
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pcell_t cell;
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int devunit, error;
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sc = device_get_softc(dev);
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sc->avg_dev = dev;
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sc->avg_unit = device_get_unit(dev);
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/*
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* Query driver-specific OpenFirmware properties to determine how to
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* expose the device via /dev.
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*/
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str_fileio = NULL;
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str_mmapio = NULL;
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str_devname = NULL;
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devunit = -1;
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sc->avg_width = 1;
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node = ofw_bus_get_node(dev);
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if (OF_getprop(node, "sri-cambridge,width", &cell, sizeof(cell)) > 0)
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sc->avg_width = cell;
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(void)OF_getprop_alloc(node, "sri-cambridge,fileio", sizeof(char),
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(void **)&str_fileio);
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(void)OF_getprop_alloc(node, "sri-cambridge,mmapio", sizeof(char),
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(void **)&str_mmapio);
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(void)OF_getprop_alloc(node, "sri-cambridge,devname", sizeof(char),
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(void **)&str_devname);
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if (OF_getprop(node, "sri-cambridge,devunit", &cell, sizeof(cell)) > 0)
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devunit = cell;
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/* Memory allocation and checking. */
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sc->avg_rid = 0;
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sc->avg_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
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&sc->avg_rid, RF_ACTIVE);
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if (sc->avg_res == NULL) {
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device_printf(dev, "couldn't map memory\n");
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return (ENXIO);
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}
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error = altera_avgen_attach(sc, str_fileio, str_mmapio, str_devname,
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devunit);
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if (error != 0)
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bus_release_resource(dev, SYS_RES_MEMORY, sc->avg_rid,
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sc->avg_res);
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if (str_fileio != NULL)
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free(str_fileio, M_OFWPROP);
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if (str_mmapio != NULL)
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free(str_mmapio, M_OFWPROP);
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if (str_devname != NULL)
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free(str_devname, M_OFWPROP);
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return (error);
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}
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static int
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altera_avgen_fdt_detach(device_t dev)
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{
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struct altera_avgen_softc *sc;
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sc = device_get_softc(dev);
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altera_avgen_detach(sc);
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bus_release_resource(dev, SYS_RES_MEMORY, sc->avg_rid, sc->avg_res);
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return (0);
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}
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static device_method_t altera_avgen_fdt_methods[] = {
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DEVMETHOD(device_probe, altera_avgen_fdt_probe),
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DEVMETHOD(device_attach, altera_avgen_fdt_attach),
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DEVMETHOD(device_detach, altera_avgen_fdt_detach),
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{ 0, 0 }
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};
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static driver_t altera_avgen_fdt_driver = {
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"altera_avgen",
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altera_avgen_fdt_methods,
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sizeof(struct altera_avgen_softc),
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};
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DRIVER_MODULE(avgen, simplebus, altera_avgen_fdt_driver,
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altera_avgen_devclass, 0, 0);
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