| 0,0 → 1,140 |
|---|
| /* |
| * 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 EBUS 'reg' and 'ranges' properties handling. |
| * |
| */ |
| |
| #include <genarch/ofw/ofw_tree.h> |
| #include <arch/memstr.h> |
| #include <arch/trap/interrupt.h> |
| #include <func.h> |
| #include <panic.h> |
| #include <debug.h> |
| #include <macros.h> |
| |
| /** Apply EBUS ranges to EBUS register. */ |
| bool ofw_ebus_apply_ranges(ofw_tree_node_t *node, ofw_ebus_reg_t *reg, uintptr_t *pa) |
| { |
| ofw_tree_property_t *prop; |
| ofw_ebus_range_t *range; |
| count_t ranges; |
| |
| prop = ofw_tree_getprop(node, "ranges"); |
| if (!prop) |
| return false; |
| |
| ranges = prop->size / sizeof(ofw_ebus_range_t); |
| range = prop->value; |
| |
| unsigned int i; |
| |
| for (i = 0; i < ranges; i++) { |
| if (reg->space != range[i].child_space) |
| continue; |
| if (overlaps(reg->addr, reg->size, range[i].child_base, range[i].size)) { |
| ofw_pci_reg_t pci_reg; |
| |
| pci_reg.space = range[i].parent_space; |
| pci_reg.addr = range[i].parent_base + (reg->addr - range[i].child_base); |
| pci_reg.size = reg->size; |
| |
| return ofw_pci_apply_ranges(node->parent, &pci_reg, pa); |
| } |
| } |
| |
| return false; |
| } |
| |
| bool ofw_ebus_map_interrupt(ofw_tree_node_t *node, ofw_ebus_reg_t *reg, uint32_t interrupt, int *inr) |
| { |
| ofw_tree_property_t *prop; |
| ofw_tree_node_t *controller; |
| |
| prop = ofw_tree_getprop(node, "interrupt-map"); |
| if (!prop || !prop->value) |
| return false; |
| |
| ofw_ebus_intr_map_t *intr_map = prop->value; |
| count_t count = prop->size / sizeof(ofw_ebus_intr_map_t); |
| |
| ASSERT(count); |
| |
| prop = ofw_tree_getprop(node, "interrupt-map-mask"); |
| if (!prop || !prop->value) |
| return false; |
| |
| ofw_ebus_intr_mask_t *intr_mask = prop->value; |
| |
| ASSERT(prop->size == sizeof(ofw_ebus_intr_mask_t)); |
| |
| uint32_t space = reg->space & intr_mask->space_mask; |
| uint32_t addr = reg->addr & intr_mask->addr_mask; |
| uint32_t intr = interrupt & intr_mask->intr_mask; |
| |
| unsigned int i; |
| for (i = 0; i < count; i++) { |
| if ((intr_map[i].space == space) && (intr_map[i].addr == addr) |
| && (intr_map[i].intr == intr)) |
| goto found; |
| } |
| return false; |
| |
| found: |
| /* |
| * We found the device that functions as an interrupt controller |
| * for the interrupt. We also found partial mapping from interrupt to INO. |
| */ |
| |
| controller = ofw_tree_find_node_by_handle(ofw_tree_lookup("/"), intr_map[i].controller_handle); |
| if (!controller) |
| return false; |
| |
| if (strcmp(ofw_tree_node_name(controller), "pci") != 0) { |
| /* |
| * This is not a PCI node. |
| */ |
| return false; |
| } |
| |
| /* |
| * Let the PCI do the next step in mapping the interrupt. |
| */ |
| if (!ofw_pci_map_interrupt(controller, NULL, intr_map[i].controller_ino, inr)) |
| return false; |
| |
| return true; |
| } |
| |
| /** @} |
| */ |