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| 1 | /* |
1 | /* |
| 2 | * Copyright (C) 2006 Jakub Jermar |
2 | * Copyright (C) 2006 Jakub Jermar |
| 3 | * All rights reserved. |
3 | * All rights reserved. |
| 4 | * |
4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
7 | * are met: |
| 8 | * |
8 | * |
| 9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
| 14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
| 15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
| 16 | * |
16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
27 | */ |
| 28 | 28 | ||
| 29 | /** @addtogroup ofw |
29 | /** @addtogroup ofw |
| 30 | * @{ |
30 | * @{ |
| 31 | */ |
31 | */ |
| 32 | /** |
32 | /** |
| 33 | * @file |
33 | * @file |
| 34 | * @brief PCI 'reg' and 'ranges' properties handling. |
34 | * @brief PCI 'reg' and 'ranges' properties handling. |
| 35 | * |
35 | * |
| 36 | */ |
36 | */ |
| 37 | 37 | ||
| 38 | #include <genarch/ofw/ofw_tree.h> |
38 | #include <genarch/ofw/ofw_tree.h> |
| 39 | #include <arch/memstr.h> |
39 | #include <arch/memstr.h> |
| 40 | #include <func.h> |
40 | #include <func.h> |
| 41 | #include <panic.h> |
41 | #include <panic.h> |
| 42 | #include <macros.h> |
42 | #include <macros.h> |
| 43 | 43 | ||
| 44 | #define PCI_SPACE_MASK 0x03000000 |
44 | #define PCI_SPACE_MASK 0x03000000 |
| - | 45 | #define PCI_ABS_MASK 0x80000000 |
|
| - | 46 | #define PCI_REG_MASK 0x000000ff |
|
| 45 | 47 | ||
| 46 | bool ofw_pci_apply_ranges(ofw_tree_node_t *node, ofw_pci_reg_t *reg, uintptr_t *pa) |
48 | bool ofw_pci_apply_ranges(ofw_tree_node_t *node, ofw_pci_reg_t *reg, uintptr_t *pa) |
| 47 | { |
49 | { |
| 48 | ofw_tree_property_t *prop; |
50 | ofw_tree_property_t *prop; |
| 49 | ofw_pci_range_t *range; |
51 | ofw_pci_range_t *range; |
| 50 | count_t ranges; |
52 | count_t ranges; |
| 51 | 53 | ||
| 52 | prop = ofw_tree_getprop(node, "ranges"); |
54 | prop = ofw_tree_getprop(node, "ranges"); |
| 53 | if (!prop) { |
55 | if (!prop) { |
| 54 | if (strcmp(ofw_tree_node_name(node->parent), "pci") == 0) |
56 | if (strcmp(ofw_tree_node_name(node->parent), "pci") == 0) |
| 55 | return ofw_pci_apply_ranges(node->parent, reg, pa); |
57 | return ofw_pci_apply_ranges(node->parent, reg, pa); |
| 56 | return false; |
58 | return false; |
| 57 | } |
59 | } |
| 58 | 60 | ||
| 59 | ranges = prop->size / sizeof(ofw_pci_range_t); |
61 | ranges = prop->size / sizeof(ofw_pci_range_t); |
| 60 | range = prop->value; |
62 | range = prop->value; |
| 61 | 63 | ||
| 62 | int i; |
64 | int i; |
| 63 | 65 | ||
| 64 | for (i = 0; i < ranges; i++) { |
66 | for (i = 0; i < ranges; i++) { |
| 65 | if ((reg->space & PCI_SPACE_MASK) != (range[i].space & PCI_SPACE_MASK)) |
67 | if ((reg->space & PCI_SPACE_MASK) != (range[i].space & PCI_SPACE_MASK)) |
| 66 | continue; |
68 | continue; |
| 67 | if (overlaps(reg->addr, reg->size, range[i].child_base, range[i].size)) { |
69 | if (overlaps(reg->addr, reg->size, range[i].child_base, range[i].size)) { |
| 68 | *pa = range[i].parent_base + (reg->addr - range[i].child_base); |
70 | *pa = range[i].parent_base + (reg->addr - range[i].child_base); |
| 69 | return true; |
71 | return true; |
| 70 | } |
72 | } |
| 71 | } |
73 | } |
| 72 | 74 | ||
| 73 | return false; |
75 | return false; |
| - | 76 | } |
|
| - | 77 | ||
| - | 78 | bool ofw_pci_reg_absolutize(ofw_tree_node_t *node, ofw_pci_reg_t *reg, ofw_pci_reg_t *out) |
|
| - | 79 | { |
|
| - | 80 | if (reg->space & PCI_ABS_MASK) { |
|
| - | 81 | /* already absolute */ |
|
| - | 82 | out->space = reg->space; |
|
| - | 83 | out->addr = reg->addr; |
|
| - | 84 | out->size = reg->size; |
|
| - | 85 | return true; |
|
| - | 86 | } |
|
| - | 87 | ||
| - | 88 | ofw_tree_property_t *prop; |
|
| - | 89 | ofw_pci_reg_t *assigned_address; |
|
| - | 90 | count_t assigned_addresses; |
|
| - | 91 | ||
| - | 92 | prop = ofw_tree_getprop(node, "assigned-addresses"); |
|
| - | 93 | if (!prop) |
|
| - | 94 | panic("Can't find \"assigned-addresses\" property.\n"); |
|
| - | 95 | ||
| - | 96 | assigned_addresses = prop->size / sizeof(ofw_pci_reg_t); |
|
| - | 97 | assigned_address = prop->value; |
|
| - | 98 | ||
| - | 99 | int i; |
|
| - | 100 | ||
| - | 101 | for (i = 0; i < assigned_addresses; i++) { |
|
| - | 102 | if ((assigned_address[i].space & PCI_REG_MASK) == (reg->space & PCI_REG_MASK)) { |
|
| - | 103 | out->space = assigned_address[i].space; |
|
| - | 104 | out->addr = reg->addr + assigned_address[i].addr; |
|
| - | 105 | out->size = reg->size; |
|
| - | 106 | return true; |
|
| - | 107 | } |
|
| - | 108 | } |
|
| - | 109 | ||
| - | 110 | return false; |
|
| 74 | } |
111 | } |
| 75 | 112 | ||
| 76 | /** @} |
113 | /** @} |
| 77 | */ |
114 | */ |
| 78 | 115 | ||