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Merge Perforce changeset 219941 to head:
Copy altera_avgen(4) nexus attachment as a starting point for an FDT attachment. Sponsored by: DARPA, AFRL
This commit is contained in:
Robert Watson
parent
b364a5252e
commit
1925f29537
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=245377
143
sys/dev/altera/avgen/altera_avgen_fdt.c
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143
sys/dev/altera/avgen/altera_avgen_fdt.c
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/*-
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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/altera/avgen/altera_avgen.h>
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static int
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altera_avgen_nexus_probe(device_t dev)
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{
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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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static int
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altera_avgen_nexus_attach(device_t dev)
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{
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struct altera_avgen_softc *sc;
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const char *str_fileio, *str_mmapio;
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const char *str_devname;
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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 non-standard hints to find out what operations are permitted
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* on the device, and whether it is cached.
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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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error = resource_int_value(device_get_name(dev), device_get_unit(dev),
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ALTERA_AVALON_STR_WIDTH, &sc->avg_width);
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if (error != 0 && error != ENOENT) {
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device_printf(dev, "invalid %s\n", ALTERA_AVALON_STR_WIDTH);
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return (error);
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}
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(void)resource_string_value(device_get_name(dev),
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device_get_unit(dev), ALTERA_AVALON_STR_FILEIO, &str_fileio);
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(void)resource_string_value(device_get_name(dev),
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device_get_unit(dev), ALTERA_AVALON_STR_MMAPIO, &str_mmapio);
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(void)resource_string_value(device_get_name(dev),
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device_get_unit(dev), ALTERA_AVALON_STR_DEVNAME, &str_devname);
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(void)resource_int_value(device_get_name(dev), device_get_unit(dev),
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ALTERA_AVALON_STR_DEVUNIT, &devunit);
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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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return (error);
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}
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static int
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altera_avgen_nexus_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_nexus_methods[] = {
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DEVMETHOD(device_probe, altera_avgen_nexus_probe),
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DEVMETHOD(device_attach, altera_avgen_nexus_attach),
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DEVMETHOD(device_detach, altera_avgen_nexus_detach),
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{ 0, 0 }
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};
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static driver_t altera_avgen_nexus_driver = {
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"altera_avgen",
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altera_avgen_nexus_methods,
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sizeof(struct altera_avgen_softc),
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};
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static devclass_t altera_avgen_devclass;
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DRIVER_MODULE(avgen, nexus, altera_avgen_nexus_driver, altera_avgen_devclass,
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0, 0);
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