1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2012 Robert N. M. Watson 5 * All rights reserved. 6 * 7 * This software was developed by SRI International and the University of 8 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) 9 * ("CTSRD"), as part of the DARPA CRASH research programme. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/param.h> 34 #include <sys/bus.h> 35 #include <sys/condvar.h> 36 #include <sys/conf.h> 37 #include <sys/bio.h> 38 #include <sys/kernel.h> 39 #include <sys/lock.h> 40 #include <sys/malloc.h> 41 #include <sys/module.h> 42 #include <sys/mutex.h> 43 #include <sys/rman.h> 44 #include <sys/systm.h> 45 #include <sys/taskqueue.h> 46 47 #include <machine/bus.h> 48 #include <machine/resource.h> 49 50 #include <geom/geom_disk.h> 51 52 #include <dev/altera/sdcard/altera_sdcard.h> 53 54 /* 55 * Nexus bus attachment for the Altera SD Card IP core. Appropriate for most 56 * Altera FPGA SoC-style configurations in which the IP core will be exposed 57 * to the processor via a memory-mapped Avalon bus. 58 */ 59 static int 60 altera_sdcard_nexus_probe(device_t dev) 61 { 62 63 device_set_desc(dev, "Altera Secure Data Card IP Core"); 64 return (BUS_PROBE_NOWILDCARD); 65 } 66 67 static int 68 altera_sdcard_nexus_attach(device_t dev) 69 { 70 struct altera_sdcard_softc *sc; 71 72 sc = device_get_softc(dev); 73 sc->as_dev = dev; 74 sc->as_unit = device_get_unit(dev); 75 sc->as_rid = 0; 76 sc->as_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 77 &sc->as_rid, RF_ACTIVE); 78 if (sc->as_res == NULL) { 79 device_printf(dev, "couldn't map memory\n"); 80 return (ENXIO); 81 } 82 altera_sdcard_attach(sc); 83 return (0); 84 } 85 86 static int 87 altera_sdcard_nexus_detach(device_t dev) 88 { 89 struct altera_sdcard_softc *sc; 90 91 sc = device_get_softc(dev); 92 KASSERT(sc->as_res != NULL, ("%s: resources not allocated", 93 __func__)); 94 altera_sdcard_detach(sc); 95 bus_release_resource(dev, SYS_RES_MEMORY, sc->as_rid, sc->as_res); 96 return (0); 97 } 98 99 static device_method_t altera_sdcard_nexus_methods[] = { 100 DEVMETHOD(device_probe, altera_sdcard_nexus_probe), 101 DEVMETHOD(device_attach, altera_sdcard_nexus_attach), 102 DEVMETHOD(device_detach, altera_sdcard_nexus_detach), 103 { 0, 0 } 104 }; 105 106 static driver_t altera_sdcard_nexus_driver = { 107 "altera_sdcardc", 108 altera_sdcard_nexus_methods, 109 sizeof(struct altera_sdcard_softc), 110 }; 111 112 DRIVER_MODULE(altera_sdcard, nexus, altera_sdcard_nexus_driver, 0, 0); 113