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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1896 | jermar | 1 | /* |
| 2 | * Copyright (C) 2006 Jakub Jermar |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | /** @addtogroup ofw |
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| 30 | * @{ |
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| 31 | */ |
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| 32 | /** |
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| 33 | * @file |
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| 34 | * @brief EBUS 'reg' and 'ranges' properties handling. |
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| 35 | * |
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| 36 | */ |
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| 37 | |||
| 38 | #include <genarch/ofw/ofw_tree.h> |
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| 39 | #include <arch/memstr.h> |
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| 40 | #include <func.h> |
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| 41 | #include <panic.h> |
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| 1909 | jermar | 42 | #include <debug.h> |
| 1896 | jermar | 43 | #include <macros.h> |
| 44 | |||
| 45 | bool ofw_ebus_apply_ranges(ofw_tree_node_t *node, ofw_ebus_reg_t *reg, uintptr_t *pa) |
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| 46 | { |
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| 47 | ofw_tree_property_t *prop; |
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| 48 | ofw_ebus_range_t *range; |
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| 49 | count_t ranges; |
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| 50 | |||
| 51 | prop = ofw_tree_getprop(node, "ranges"); |
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| 52 | if (!prop) |
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| 53 | return false; |
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| 54 | |||
| 55 | ranges = prop->size / sizeof(ofw_ebus_range_t); |
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| 56 | range = prop->value; |
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| 57 | |||
| 58 | int i; |
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| 59 | |||
| 60 | for (i = 0; i < ranges; i++) { |
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| 61 | if (reg->space != range[i].child_space) |
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| 62 | continue; |
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| 63 | if (overlaps(reg->addr, reg->size, range[i].child_base, range[i].size)) { |
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| 64 | ofw_pci_reg_t pci_reg; |
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| 65 | |||
| 66 | pci_reg.space = range[i].parent_space; |
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| 67 | pci_reg.addr = range[i].parent_base + (reg->addr - range[i].child_base); |
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| 68 | pci_reg.size = reg->size; |
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| 69 | |||
| 70 | return ofw_pci_apply_ranges(node->parent, &pci_reg, pa); |
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| 71 | } |
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| 72 | } |
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| 73 | |||
| 74 | return false; |
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| 75 | } |
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| 76 | |||
| 1910 | jermar | 77 | bool ofw_ebus_map_interrupts(ofw_tree_node_t *node, ofw_ebus_reg_t *reg, uint32_t interrupt, int *inr) |
| 1909 | jermar | 78 | { |
| 79 | ofw_tree_property_t *prop; |
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| 80 | ofw_tree_node_t *controller; |
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| 81 | |||
| 82 | prop = ofw_tree_getprop(node, "interrupt-map"); |
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| 83 | if (!prop || !prop->value) |
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| 84 | return false; |
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| 85 | |||
| 86 | ofw_ebus_intr_map_t *intr_map = prop->value; |
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| 87 | count_t count = prop->size / sizeof(ofw_ebus_intr_map_t); |
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| 88 | |||
| 89 | ASSERT(count); |
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| 90 | |||
| 91 | prop = ofw_tree_getprop(node, "interrupt-map-mask"); |
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| 92 | if (!prop || !prop->value) |
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| 93 | return false; |
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| 94 | |||
| 95 | ofw_ebus_intr_mask_t *intr_mask = prop->value; |
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| 96 | |||
| 97 | ASSERT(prop->size == sizeof(ofw_ebus_intr_mask_t)); |
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| 98 | |||
| 99 | uint32_t space = reg->space & intr_mask->space_mask; |
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| 100 | uint32_t addr = reg->addr & intr_mask->addr_mask; |
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| 101 | uint32_t intr = interrupt & intr_mask->intr_mask; |
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| 102 | |||
| 103 | int i; |
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| 104 | for (i = 0; i < count; i++) { |
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| 105 | if ((intr_map[i].space == space) && (intr_map[i].addr == addr) |
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| 106 | && (intr_map[i].intr == intr)) |
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| 107 | goto found; |
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| 108 | } |
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| 109 | return false; |
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| 110 | |||
| 111 | found: |
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| 112 | /* |
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| 113 | * We found the device that functions as an interrupt controller |
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| 1910 | jermar | 114 | * for the interrupt. We also found mapping from interrupt to INR. |
| 1909 | jermar | 115 | */ |
| 116 | |||
| 117 | controller = ofw_tree_find_node_by_handle(ofw_tree_lookup("/"), intr_map[i].controller_handle); |
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| 118 | |||
| 1910 | jermar | 119 | *inr = intr_map[i].controller_inr; |
| 1909 | jermar | 120 | return true; |
| 121 | } |
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| 122 | |||
| 1896 | jermar | 123 | /** @} |
| 124 | */ |