The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/altera/sdcard/altera_sdcard_fdt.c

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    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: releng/12.0/sys/dev/altera/sdcard/altera_sdcard_fdt.c 326255 2017-11-27 14:52:40Z pfg $");
   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 #include <dev/fdt/fdt_common.h>
   58 #include <dev/ofw/openfirm.h>
   59 #include <dev/ofw/ofw_bus.h>
   60 #include <dev/ofw/ofw_bus_subr.h>
   61 
   62 /*
   63  * FDT bus attachment for the Altera SD Card IP core.
   64  */
   65 static int
   66 altera_sdcard_fdt_probe(device_t dev)
   67 {
   68 
   69         if (!ofw_bus_status_okay(dev))
   70                 return (ENXIO);
   71 
   72         if (ofw_bus_is_compatible(dev, "altera,sdcard_11_2011")) {
   73                 device_set_desc(dev, "Altera Secure Data Card IP Core");
   74                 return (BUS_PROBE_DEFAULT);
   75         }
   76         return (ENXIO);
   77 }
   78 
   79 static int
   80 altera_sdcard_fdt_attach(device_t dev)
   81 {
   82         struct altera_sdcard_softc *sc;
   83 
   84         sc = device_get_softc(dev);
   85         sc->as_dev = dev;
   86         sc->as_unit = device_get_unit(dev);
   87         sc->as_rid = 0;
   88         sc->as_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
   89             &sc->as_rid, RF_ACTIVE);
   90         if (sc->as_res == NULL) {
   91                 device_printf(dev, "couldn't map memory\n");
   92                 return (ENXIO);
   93         }
   94         altera_sdcard_attach(sc);
   95         return (0);
   96 }
   97 
   98 static int
   99 altera_sdcard_fdt_detach(device_t dev)
  100 {
  101         struct altera_sdcard_softc *sc;
  102 
  103         sc = device_get_softc(dev);
  104         KASSERT(sc->as_res != NULL, ("%s: resources not allocated",
  105             __func__));
  106         altera_sdcard_detach(sc);
  107         bus_release_resource(dev, SYS_RES_MEMORY, sc->as_rid, sc->as_res);
  108         return (0);
  109 }
  110 
  111 static device_method_t altera_sdcard_fdt_methods[] = {
  112         DEVMETHOD(device_probe,         altera_sdcard_fdt_probe),
  113         DEVMETHOD(device_attach,        altera_sdcard_fdt_attach),
  114         DEVMETHOD(device_detach,        altera_sdcard_fdt_detach),
  115         { 0, 0 }
  116 };
  117 
  118 static driver_t altera_sdcard_fdt_driver = {
  119         "altera_sdcardc",
  120         altera_sdcard_fdt_methods,
  121         sizeof(struct altera_sdcard_softc),
  122 };
  123 
  124 DRIVER_MODULE(altera_sdcard, simplebus, altera_sdcard_fdt_driver,
  125     altera_sdcard_devclass, 0, 0);

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