0,0 → 1,133 |
/* |
* Copyright (c) 2006 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 FHC 'reg' and 'ranges' properties handling. |
* |
*/ |
|
#include <genarch/ofw/ofw_tree.h> |
#include <arch/drivers/fhc.h> |
#include <arch/memstr.h> |
#include <func.h> |
#include <panic.h> |
#include <macros.h> |
|
bool ofw_fhc_apply_ranges(ofw_tree_node_t *node, ofw_fhc_reg_t *reg, uintptr_t *pa) |
{ |
ofw_tree_property_t *prop; |
ofw_fhc_range_t *range; |
count_t ranges; |
|
prop = ofw_tree_getprop(node, "ranges"); |
if (!prop) |
return false; |
|
ranges = prop->size / sizeof(ofw_fhc_range_t); |
range = prop->value; |
|
unsigned int i; |
|
for (i = 0; i < ranges; i++) { |
if (overlaps(reg->addr, reg->size, range[i].child_base, range[i].size)) { |
uintptr_t addr; |
|
addr = range[i].parent_base + (reg->addr - range[i].child_base); |
if (!node->parent->parent) { |
*pa = addr; |
return true; |
} |
if (strcmp(ofw_tree_node_name(node->parent), "central") != 0) |
panic("Unexpected parent node: %s.\n", ofw_tree_node_name(node->parent)); |
|
ofw_central_reg_t central_reg; |
|
central_reg.addr = addr; |
central_reg.size = reg->size; |
|
return ofw_central_apply_ranges(node->parent, ¢ral_reg, pa); |
} |
} |
|
return false; |
} |
|
bool ofw_central_apply_ranges(ofw_tree_node_t *node, ofw_central_reg_t *reg, uintptr_t *pa) |
{ |
if (node->parent->parent) |
panic("Unexpected parent node: %s.\n", ofw_tree_node_name(node->parent)); |
|
ofw_tree_property_t *prop; |
ofw_central_range_t *range; |
count_t ranges; |
|
prop = ofw_tree_getprop(node, "ranges"); |
if (!prop) |
return false; |
|
ranges = prop->size / sizeof(ofw_central_range_t); |
range = prop->value; |
|
unsigned 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; |
} |
|
bool ofw_fhc_map_interrupt(ofw_tree_node_t *node, ofw_fhc_reg_t *reg, uint32_t interrupt, int *inr) |
{ |
fhc_t *fhc = NULL; |
if (!node->device) { |
fhc = fhc_init(node); |
if (!fhc) |
return false; |
node->device = fhc; |
central_fhc = fhc; |
} |
|
/* |
* The interrupt controller for the interrupt is the FHC itself. |
*/ |
fhc_enable_interrupt(fhc, interrupt); |
|
*inr = interrupt; |
return true; |
} |
|
/** @} |
*/ |