1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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/cdefs.h> 34 __FBSDID("$FreeBSD$"); 35 36 #include <sys/param.h> 37 #include <sys/bus.h> 38 #include <sys/condvar.h> 39 #include <sys/conf.h> 40 #include <sys/bio.h> 41 #include <sys/kernel.h> 42 #include <sys/lock.h> 43 #include <sys/malloc.h> 44 #include <sys/module.h> 45 #include <sys/mutex.h> 46 #include <sys/rman.h> 47 #include <sys/systm.h> 48 #include <sys/taskqueue.h> 49 50 #include <machine/bus.h> 51 #include <machine/resource.h> 52 53 #include <geom/geom_disk.h> 54 55 #include <dev/altera/sdcard/altera_sdcard.h> 56 57 /* 58 * Nexus bus attachment for the Altera SD Card IP core. Appropriate for most 59 * Altera FPGA SoC-style configurations in which the IP core will be exposed 60 * to the processor via a memory-mapped Avalon bus. 61 */ 62 static int 63 altera_sdcard_nexus_probe(device_t dev) 64 { 65 66 device_set_desc(dev, "Altera Secure Data Card IP Core"); 67 return (BUS_PROBE_NOWILDCARD); 68 } 69 70 static int 71 altera_sdcard_nexus_attach(device_t dev) 72 { 73 struct altera_sdcard_softc *sc; 74 75 sc = device_get_softc(dev); 76 sc->as_dev = dev; 77 sc->as_unit = device_get_unit(dev); 78 sc->as_rid = 0; 79 sc->as_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 80 &sc->as_rid, RF_ACTIVE); 81 if (sc->as_res == NULL) { 82 device_printf(dev, "couldn't map memory\n"); 83 return (ENXIO); 84 } 85 altera_sdcard_attach(sc); 86 return (0); 87 } 88 89 static int 90 altera_sdcard_nexus_detach(device_t dev) 91 { 92 struct altera_sdcard_softc *sc; 93 94 sc = device_get_softc(dev); 95 KASSERT(sc->as_res != NULL, ("%s: resources not allocated", 96 __func__)); 97 altera_sdcard_detach(sc); 98 bus_release_resource(dev, SYS_RES_MEMORY, sc->as_rid, sc->as_res); 99 return (0); 100 } 101 102 static device_method_t altera_sdcard_nexus_methods[] = { 103 DEVMETHOD(device_probe, altera_sdcard_nexus_probe), 104 DEVMETHOD(device_attach, altera_sdcard_nexus_attach), 105 DEVMETHOD(device_detach, altera_sdcard_nexus_detach), 106 { 0, 0 } 107 }; 108 109 static driver_t altera_sdcard_nexus_driver = { 110 "altera_sdcardc", 111 altera_sdcard_nexus_methods, 112 sizeof(struct altera_sdcard_softc), 113 }; 114 115 DRIVER_MODULE(altera_sdcard, nexus, altera_sdcard_nexus_driver, 116 altera_sdcard_devclass, 0, 0); 117