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Add the implementation of OF_decode_addr().

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This commit is contained in:
Ruslan Bukin 2016-04-26 12:33:25 +00:00
parent 5c3a3f25ce
commit 63270b0b65
1 changed files with 58 additions and 0 deletions
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58
sys/riscv/riscv/ofw_machdep.c Normal file
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/*-
* Copyright (c) 2015 Ian Lepore <ian@freebsd.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/bus.h>
#include <machine/bus.h>
#include <dev/ofw/openfirm.h>
#include <dev/ofw/ofw_subr.h>
extern struct bus_space memmap_bus;
int
OF_decode_addr(phandle_t dev, int regno, bus_space_tag_t *tag,
bus_space_handle_t *handle, bus_size_t *sz)
{
bus_addr_t addr;
bus_size_t size;
int err;
err = ofw_reg_to_paddr(dev, regno, &addr, &size, NULL);
if (err != 0)
return (err);
*tag = &memmap_bus;
if (sz != NULL)
*sz = size;
return (bus_space_map(*tag, addr, size, 0, handle));
}