| 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; |
| } |
| |
| /** @} |
| */ |