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  * 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: releng/10.1/sys/dev/altera/sdcard/altera_sdcard_fdt.c 266152 2014-05-15 16:11:06Z ian $");
   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 #include <dev/fdt/fdt_common.h>
   56 #include <dev/ofw/openfirm.h>
   57 #include <dev/ofw/ofw_bus.h>
   58 #include <dev/ofw/ofw_bus_subr.h>
   59 
   60 /*
   61  * FDT bus attachment for the Altera SD Card IP core.
   62  */
   63 static int
   64 altera_sdcard_fdt_probe(device_t dev)
   65 {
   66 
   67         if (!ofw_bus_status_okay(dev))
   68                 return (ENXIO);
   69 
   70         if (ofw_bus_is_compatible(dev, "altera,sdcard_11_2011")) {
   71                 device_set_desc(dev, "Altera Secure Data Card IP Core");
   72                 return (BUS_PROBE_DEFAULT);
   73         }
   74         return (ENXIO);
   75 }
   76 
   77 static int
   78 altera_sdcard_fdt_attach(device_t dev)
   79 {
   80         struct altera_sdcard_softc *sc;
   81 
   82         sc = device_get_softc(dev);
   83         sc->as_dev = dev;
   84         sc->as_unit = device_get_unit(dev);
   85         sc->as_rid = 0;
   86         sc->as_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
   87             &sc->as_rid, RF_ACTIVE);
   88         if (sc->as_res == NULL) {
   89                 device_printf(dev, "couldn't map memory\n");
   90                 return (ENXIO);
   91         }
   92         altera_sdcard_attach(sc);
   93         return (0);
   94 }
   95 
   96 static int
   97 altera_sdcard_fdt_detach(device_t dev)
   98 {
   99         struct altera_sdcard_softc *sc;
  100 
  101         sc = device_get_softc(dev);
  102         KASSERT(sc->as_res != NULL, ("%s: resources not allocated",
  103             __func__));
  104         altera_sdcard_detach(sc);
  105         bus_release_resource(dev, SYS_RES_MEMORY, sc->as_rid, sc->as_res);
  106         return (0);
  107 }
  108 
  109 static device_method_t altera_sdcard_fdt_methods[] = {
  110         DEVMETHOD(device_probe,         altera_sdcard_fdt_probe),
  111         DEVMETHOD(device_attach,        altera_sdcard_fdt_attach),
  112         DEVMETHOD(device_detach,        altera_sdcard_fdt_detach),
  113         { 0, 0 }
  114 };
  115 
  116 static driver_t altera_sdcard_fdt_driver = {
  117         "altera_sdcardc",
  118         altera_sdcard_fdt_methods,
  119         sizeof(struct altera_sdcard_softc),
  120 };
  121 
  122 DRIVER_MODULE(altera_sdcard, simplebus, altera_sdcard_fdt_driver,
  123     altera_sdcard_devclass, 0, 0);

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