firmware.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10

    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause
    3  *
    4  * Copyright (c) 2019 Ruslan Bukin <br@bsdpad.com>
    5  *
    6  * This software was developed by SRI International and the University of
    7  * Cambridge Computer Laboratory (Department of Computer Science and
    8  * Technology) under DARPA contract HR0011-18-C-0016 ("ECATS"), as part of the
    9  * DARPA SSITH 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/systm.h>
   38 #include <sys/kernel.h>
   39 #include <sys/module.h>
   40 
   41 #include <dev/fdt/simplebus.h>
   42 #include <dev/fdt/fdt_common.h>
   43 #include <dev/ofw/ofw_bus_subr.h>
   44 
   45 struct firmware_softc {
   46         struct simplebus_softc  simplebus_sc;
   47         device_t                dev;
   48 };
   49 
   50 static int
   51 firmware_probe(device_t dev)
   52 {
   53         phandle_t node;
   54 
   55         node = ofw_bus_get_node(dev);
   56 
   57         /*
   58          * The firmware node has no property compatible.
   59          * Look for a known child.
   60          */
   61         if (!fdt_depth_search_compatible(node, "intel,stratix10-svc", 0))
   62                 return (ENXIO);
   63 
   64         if (!ofw_bus_status_okay(dev))
   65                 return (ENXIO);
   66 
   67         device_set_desc(dev, "Firmware node");
   68 
   69         return (BUS_PROBE_DEFAULT);
   70 }
   71 
   72 static int
   73 firmware_attach(device_t dev)
   74 {
   75         struct firmware_softc *sc;
   76         phandle_t node;
   77 
   78         sc = device_get_softc(dev);
   79         sc->dev = dev;
   80 
   81         node = ofw_bus_get_node(dev);
   82         if (node == -1)
   83                 return (ENXIO);
   84 
   85         simplebus_init(dev, node);
   86 
   87         /*
   88          * Allow devices to identify.
   89          */
   90         bus_generic_probe(dev);
   91 
   92         /*
   93          * Now walk the OFW tree and attach top-level devices.
   94          */
   95         for (node = OF_child(node); node > 0; node = OF_peer(node))
   96                 simplebus_add_device(dev, node, 0, NULL, -1, NULL);
   97 
   98         return (bus_generic_attach(dev));
   99 }
  100 
  101 static int
  102 firmware_detach(device_t dev)
  103 {
  104 
  105         return (0);
  106 }
  107 
  108 static device_method_t firmware_methods[] = {
  109         DEVMETHOD(device_probe,         firmware_probe),
  110         DEVMETHOD(device_attach,        firmware_attach),
  111         DEVMETHOD(device_detach,        firmware_detach),
  112         DEVMETHOD_END
  113 };
  114 
  115 DEFINE_CLASS_1(firmware, firmware_driver, firmware_methods,
  116     sizeof(struct firmware_softc), simplebus_driver);
  117 
  118 EARLY_DRIVER_MODULE(firmware, simplebus, firmware_driver, 0, 0,
  119     BUS_PASS_INTERRUPT + BUS_PASS_ORDER_MIDDLE);
  120 MODULE_VERSION(firmware, 1);

Cache object: c53539db2617ea1b6915327019d4606c

[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.

FreeBSD/Linux Kernel Cross Reference sys/arm64/intel/firmware.c

FreeBSD/Linux Kernel Cross Reference
sys/arm64/intel/firmware.c