ofw_machdep.c

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    1 /*-
    2  * Copyright (c) 2015 Ian Lepore <ian@freebsd.org>
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  */
   26 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD: releng/11.2/sys/arm64/arm64/ofw_machdep.c 295662 2016-02-16 15:18:12Z andrew $");
   29 
   30 #include <sys/param.h>
   31 #include <sys/bus.h>
   32 
   33 #include <machine/bus.h>
   34 
   35 #include <dev/ofw/openfirm.h>
   36 #include <dev/ofw/ofw_subr.h>
   37 
   38 extern struct bus_space memmap_bus;
   39 
   40 int
   41 OF_decode_addr(phandle_t dev, int regno, bus_space_tag_t *tag,
   42     bus_space_handle_t *handle, bus_size_t *sz)
   43 {
   44         bus_addr_t addr;
   45         bus_size_t size;
   46         int err;
   47 
   48         err = ofw_reg_to_paddr(dev, regno, &addr, &size, NULL);
   49         if (err != 0)
   50                 return (err);
   51 
   52         *tag = &memmap_bus;
   53 
   54         if (sz != NULL)
   55                 *sz = size;
   56 
   57         return (bus_space_map(*tag, addr, size, 0, handle));
   58 }

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FreeBSD/Linux Kernel Cross Reference sys/arm64/arm64/ofw_machdep.c

FreeBSD/Linux Kernel Cross Reference
sys/arm64/arm64/ofw_machdep.c