1 /*- 2 * Copyright (c) 2012 Robert N. M. Watson 3 * All rights reserved. 4 * 5 * This software was developed by SRI International and the University of 6 * Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237) 7 * ("CTSRD"), as part of the DARPA CRASH research programme. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #include <sys/cdefs.h> 32 __FBSDID("$FreeBSD$"); 33 34 #include <sys/param.h> 35 #include <sys/bus.h> 36 #include <sys/condvar.h> 37 #include <sys/conf.h> 38 #include <sys/bio.h> 39 #include <sys/kernel.h> 40 #include <sys/lock.h> 41 #include <sys/malloc.h> 42 #include <sys/module.h> 43 #include <sys/mutex.h> 44 #include <sys/rman.h> 45 #include <sys/systm.h> 46 #include <sys/taskqueue.h> 47 48 #include <machine/bus.h> 49 #include <machine/resource.h> 50 51 #include <geom/geom_disk.h> 52 53 #include <dev/altera/sdcard/altera_sdcard.h> 54 55 /* 56 * Nexus bus attachment for the Altera SD Card IP core. Appropriate for most 57 * Altera FPGA SoC-style configurations in which the IP core will be exposed 58 * to the processor via a memory-mapped Avalon bus. 59 */ 60 static int 61 altera_sdcard_nexus_probe(device_t dev) 62 { 63 64 device_set_desc(dev, "Altera Secure Data Card IP Core"); 65 return (BUS_PROBE_DEFAULT); 66 } 67 68 static int 69 altera_sdcard_nexus_attach(device_t dev) 70 { 71 struct altera_sdcard_softc *sc; 72 73 sc = device_get_softc(dev); 74 sc->as_dev = dev; 75 sc->as_unit = device_get_unit(dev); 76 sc->as_rid = 0; 77 sc->as_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 78 &sc->as_rid, RF_ACTIVE); 79 if (sc->as_res == NULL) { 80 device_printf(dev, "couldn't map memory\n"); 81 return (ENXIO); 82 } 83 altera_sdcard_attach(sc); 84 return (0); 85 } 86 87 static int 88 altera_sdcard_nexus_detach(device_t dev) 89 { 90 struct altera_sdcard_softc *sc; 91 92 sc = device_get_softc(dev); 93 KASSERT(sc->as_res != NULL, ("%s: resources not allocated", 94 __func__)); 95 altera_sdcard_detach(sc); 96 bus_release_resource(dev, SYS_RES_MEMORY, sc->as_rid, sc->as_res); 97 return (0); 98 } 99 100 static device_method_t altera_sdcard_nexus_methods[] = { 101 DEVMETHOD(device_probe, altera_sdcard_nexus_probe), 102 DEVMETHOD(device_attach, altera_sdcard_nexus_attach), 103 DEVMETHOD(device_detach, altera_sdcard_nexus_detach), 104 { 0, 0 } 105 }; 106 107 static driver_t altera_sdcard_nexus_driver = { 108 "altera_sdcardc", 109 altera_sdcard_nexus_methods, 110 sizeof(struct altera_sdcard_softc), 111 }; 112 113 static devclass_t altera_sdcard_devclass; 114 115 DRIVER_MODULE(altera_sdcard, nexus, altera_sdcard_nexus_driver, 116 altera_sdcard_devclass, 0, 0); 117