altera_avgen_fdt.c revision 245376
1239674Srwatson/*- 2245376Srwatson * Copyright (c) 2012-2013 Robert N. M. Watson 3239674Srwatson * All rights reserved. 4239674Srwatson * 5239674Srwatson * This software was developed by SRI International and the University of 6239674Srwatson * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) 7239674Srwatson * ("CTSRD"), as part of the DARPA CRASH research programme. 8239674Srwatson * 9239674Srwatson * Redistribution and use in source and binary forms, with or without 10239674Srwatson * modification, are permitted provided that the following conditions 11239674Srwatson * are met: 12239674Srwatson * 1. Redistributions of source code must retain the above copyright 13239674Srwatson * notice, this list of conditions and the following disclaimer. 14239674Srwatson * 2. Redistributions in binary form must reproduce the above copyright 15239674Srwatson * notice, this list of conditions and the following disclaimer in the 16239674Srwatson * documentation and/or other materials provided with the distribution. 17239674Srwatson * 18239674Srwatson * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19239674Srwatson * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20239674Srwatson * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21239674Srwatson * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22239674Srwatson * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23239674Srwatson * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24239674Srwatson * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25239674Srwatson * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26239674Srwatson * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27239674Srwatson * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28239674Srwatson * SUCH DAMAGE. 29239674Srwatson */ 30239674Srwatson 31239674Srwatson#include <sys/cdefs.h> 32239674Srwatson__FBSDID("$FreeBSD: head/sys/dev/altera/avgen/altera_avgen_nexus.c 245376 2013-01-13 16:43:59Z rwatson $"); 33239674Srwatson 34239674Srwatson#include <sys/param.h> 35239674Srwatson#include <sys/bus.h> 36239674Srwatson#include <sys/condvar.h> 37239674Srwatson#include <sys/conf.h> 38239674Srwatson#include <sys/kernel.h> 39239674Srwatson#include <sys/lock.h> 40239674Srwatson#include <sys/malloc.h> 41239674Srwatson#include <sys/module.h> 42239674Srwatson#include <sys/mutex.h> 43239674Srwatson#include <sys/rman.h> 44239674Srwatson#include <sys/stat.h> 45239674Srwatson#include <sys/systm.h> 46239674Srwatson#include <sys/uio.h> 47239674Srwatson 48239674Srwatson#include <machine/bus.h> 49239674Srwatson#include <machine/resource.h> 50239674Srwatson#include <machine/vm.h> 51239674Srwatson 52239674Srwatson#include <vm/vm.h> 53239674Srwatson 54239674Srwatson#include <dev/altera/avgen/altera_avgen.h> 55239674Srwatson 56239674Srwatsonstatic int 57239674Srwatsonaltera_avgen_nexus_probe(device_t dev) 58239674Srwatson{ 59239674Srwatson 60239674Srwatson device_set_desc(dev, "Generic Altera Avalon device attachment"); 61239674Srwatson return (BUS_PROBE_DEFAULT); 62239674Srwatson} 63239674Srwatson 64239674Srwatsonstatic int 65239674Srwatsonaltera_avgen_nexus_attach(device_t dev) 66239674Srwatson{ 67239674Srwatson struct altera_avgen_softc *sc; 68239674Srwatson const char *str_fileio, *str_mmapio; 69239674Srwatson const char *str_devname; 70239674Srwatson int devunit, error; 71239674Srwatson 72239674Srwatson sc = device_get_softc(dev); 73239674Srwatson sc->avg_dev = dev; 74239674Srwatson sc->avg_unit = device_get_unit(dev); 75239674Srwatson 76239674Srwatson /* 77239674Srwatson * Query non-standard hints to find out what operations are permitted 78239674Srwatson * on the device, and whether it is cached. 79239674Srwatson */ 80239674Srwatson str_fileio = NULL; 81239674Srwatson str_mmapio = NULL; 82239674Srwatson str_devname = NULL; 83239674Srwatson devunit = -1; 84239674Srwatson sc->avg_width = 1; 85239674Srwatson error = resource_int_value(device_get_name(dev), device_get_unit(dev), 86239674Srwatson ALTERA_AVALON_STR_WIDTH, &sc->avg_width); 87239674Srwatson if (error != 0 && error != ENOENT) { 88239674Srwatson device_printf(dev, "invalid %s\n", ALTERA_AVALON_STR_WIDTH); 89239674Srwatson return (error); 90239674Srwatson } 91239674Srwatson (void)resource_string_value(device_get_name(dev), 92239674Srwatson device_get_unit(dev), ALTERA_AVALON_STR_FILEIO, &str_fileio); 93239674Srwatson (void)resource_string_value(device_get_name(dev), 94239674Srwatson device_get_unit(dev), ALTERA_AVALON_STR_MMAPIO, &str_mmapio); 95239674Srwatson (void)resource_string_value(device_get_name(dev), 96239674Srwatson device_get_unit(dev), ALTERA_AVALON_STR_DEVNAME, &str_devname); 97239674Srwatson (void)resource_int_value(device_get_name(dev), device_get_unit(dev), 98239674Srwatson ALTERA_AVALON_STR_DEVUNIT, &devunit); 99239674Srwatson 100239674Srwatson /* Memory allocation and checking. */ 101239674Srwatson sc->avg_rid = 0; 102239674Srwatson sc->avg_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 103239674Srwatson &sc->avg_rid, RF_ACTIVE); 104239674Srwatson if (sc->avg_res == NULL) { 105239674Srwatson device_printf(dev, "couldn't map memory\n"); 106239674Srwatson return (ENXIO); 107239674Srwatson } 108245376Srwatson error = altera_avgen_attach(sc, str_fileio, str_mmapio, str_devname, 109245376Srwatson devunit); 110245376Srwatson if (error != 0) 111245376Srwatson bus_release_resource(dev, SYS_RES_MEMORY, sc->avg_rid, 112245376Srwatson sc->avg_res); 113239674Srwatson return (error); 114239674Srwatson} 115239674Srwatson 116239674Srwatsonstatic int 117239674Srwatsonaltera_avgen_nexus_detach(device_t dev) 118239674Srwatson{ 119239674Srwatson struct altera_avgen_softc *sc; 120239674Srwatson 121239674Srwatson sc = device_get_softc(dev); 122245376Srwatson altera_avgen_detach(sc); 123239674Srwatson bus_release_resource(dev, SYS_RES_MEMORY, sc->avg_rid, sc->avg_res); 124239674Srwatson return (0); 125239674Srwatson} 126239674Srwatson 127239674Srwatsonstatic device_method_t altera_avgen_nexus_methods[] = { 128239674Srwatson DEVMETHOD(device_probe, altera_avgen_nexus_probe), 129239674Srwatson DEVMETHOD(device_attach, altera_avgen_nexus_attach), 130239674Srwatson DEVMETHOD(device_detach, altera_avgen_nexus_detach), 131239674Srwatson { 0, 0 } 132239674Srwatson}; 133239674Srwatson 134239674Srwatsonstatic driver_t altera_avgen_nexus_driver = { 135239674Srwatson "altera_avgen", 136239674Srwatson altera_avgen_nexus_methods, 137239674Srwatson sizeof(struct altera_avgen_softc), 138239674Srwatson}; 139239674Srwatson 140239674Srwatsonstatic devclass_t altera_avgen_devclass; 141239674Srwatson 142239674SrwatsonDRIVER_MODULE(avgen, nexus, altera_avgen_nexus_driver, altera_avgen_devclass, 143239674Srwatson 0, 0); 144