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* Copyright (c) 2006 Jakub Jermar
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* - The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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* @brief EBUS 'reg' and 'ranges' properties handling.
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#include <genarch/ofw/ofw_tree.h>
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#include <arch/memstr.h>
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#include <arch/trap/interrupt.h>
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/** Apply EBUS ranges to EBUS register. */
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ofw_ebus_apply_ranges(ofw_tree_node_t *node, ofw_ebus_reg_t *reg, uintptr_t *pa)
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ofw_tree_property_t *prop;
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ofw_ebus_range_t *range;
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prop = ofw_tree_getprop(node, "ranges");
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ranges = prop->size / sizeof(ofw_ebus_range_t);
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for (i = 0; i < ranges; i++) {
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if (reg->space != range[i].child_space)
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if (overlaps(reg->addr, reg->size, range[i].child_base,
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ofw_pci_reg_t pci_reg;
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pci_reg.space = range[i].parent_space;
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pci_reg.addr = range[i].parent_base +
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(reg->addr - range[i].child_base);
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pci_reg.size = reg->size;
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return ofw_pci_apply_ranges(node->parent, &pci_reg, pa);
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ofw_ebus_map_interrupt(ofw_tree_node_t *node, ofw_ebus_reg_t *reg,
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uint32_t interrupt, int *inr, cir_t *cir, void **cir_arg)
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ofw_tree_property_t *prop;
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ofw_tree_node_t *controller;
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prop = ofw_tree_getprop(node, "interrupt-map");
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if (!prop || !prop->value)
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ofw_ebus_intr_map_t *intr_map = prop->value;
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size_t count = prop->size / sizeof(ofw_ebus_intr_map_t);
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prop = ofw_tree_getprop(node, "interrupt-map-mask");
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if (!prop || !prop->value)
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ofw_ebus_intr_mask_t *intr_mask = prop->value;
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ASSERT(prop->size == sizeof(ofw_ebus_intr_mask_t));
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uint32_t space = reg->space & intr_mask->space_mask;
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uint32_t addr = reg->addr & intr_mask->addr_mask;
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uint32_t intr = interrupt & intr_mask->intr_mask;
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for (i = 0; i < count; i++) {
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if ((intr_map[i].space == space) &&
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(intr_map[i].addr == addr) && (intr_map[i].intr == intr))
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* We found the device that functions as an interrupt controller
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* for the interrupt. We also found partial mapping from interrupt to
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controller = ofw_tree_find_node_by_handle(ofw_tree_lookup("/"),
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intr_map[i].controller_handle);
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if (str_cmp(ofw_tree_node_name(controller), "pci") != 0) {
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* This is not a PCI node.
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* Let the PCI do the next step in mapping the interrupt.
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if (!ofw_pci_map_interrupt(controller, NULL, intr_map[i].controller_ino,