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Regard whitespace Rev 2509 → Rev 2510

/trunk/kernel/genarch/src/ofw/sbus.c
0,0 → 1,79
/*
* Copyright (c) 2007 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*/
 
/** @addtogroup ofw
* @{
*/
/**
* @file
* @brief SBUS 'reg' and 'ranges' properties handling.
*
*/
 
#include <genarch/ofw/ofw_tree.h>
#include <macros.h>
 
bool ofw_sbus_apply_ranges(ofw_tree_node_t *node, ofw_sbus_reg_t *reg,
uintptr_t *pa)
{
ofw_tree_property_t *prop;
ofw_sbus_range_t *range;
count_t ranges;
/*
* The SBUS support is very rudimentary in that we simply assume
* that the SBUS bus in question is connected directly to the UPA bus.
* Should we come across configurations that need more robust support,
* the driver will have to be extended to handle different topologies.
*/
if (!node->parent || node->parent->parent)
return false;
prop = ofw_tree_getprop(node, "ranges");
if (!prop)
return false;
ranges = prop->size / sizeof(ofw_sbus_range_t);
range = prop->value;
int i;
for (i = 0; i < ranges; i++) {
if (overlaps(reg->addr, reg->size, range[i].child_base,
range[i].size)) {
*pa = range[i].parent_base +
(reg->addr - range[i].child_base);
return true;
}
}
return false;
}
 
/** @}
*/