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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/drivers/pci.h> |
39 | #include <arch/drivers/pci.h> |
40 | #include <arch/trap/interrupt.h> |
40 | #include <arch/trap/interrupt.h> |
41 | #include <arch/memstr.h> |
41 | #include <arch/memstr.h> |
42 | #include <func.h> |
42 | #include <func.h> |
43 | #include <panic.h> |
43 | #include <panic.h> |
44 | #include <macros.h> |
44 | #include <macros.h> |
45 | 45 | ||
46 | #define PCI_SPACE_MASK 0x03000000 |
46 | #define PCI_SPACE_MASK 0x03000000 |
47 | #define PCI_ABS_MASK 0x80000000 |
47 | #define PCI_ABS_MASK 0x80000000 |
48 | #define PCI_REG_MASK 0x000000ff |
48 | #define PCI_REG_MASK 0x000000ff |
49 | 49 | ||
50 | #define PCI_IGN 0x1f |
50 | #define PCI_IGN 0x1f |
51 | 51 | ||
52 | bool ofw_pci_apply_ranges(ofw_tree_node_t *node, ofw_pci_reg_t *reg, uintptr_t *pa) |
52 | bool ofw_pci_apply_ranges(ofw_tree_node_t *node, ofw_pci_reg_t *reg, uintptr_t *pa) |
53 | { |
53 | { |
54 | ofw_tree_property_t *prop; |
54 | ofw_tree_property_t *prop; |
55 | ofw_pci_range_t *range; |
55 | ofw_pci_range_t *range; |
56 | count_t ranges; |
56 | count_t ranges; |
57 | 57 | ||
58 | prop = ofw_tree_getprop(node, "ranges"); |
58 | prop = ofw_tree_getprop(node, "ranges"); |
59 | if (!prop) { |
59 | if (!prop) { |
60 | if (strcmp(ofw_tree_node_name(node->parent), "pci") == 0) |
60 | if (strcmp(ofw_tree_node_name(node->parent), "pci") == 0) |
61 | return ofw_pci_apply_ranges(node->parent, reg, pa); |
61 | return ofw_pci_apply_ranges(node->parent, reg, pa); |
62 | return false; |
62 | return false; |
63 | } |
63 | } |
64 | 64 | ||
65 | ranges = prop->size / sizeof(ofw_pci_range_t); |
65 | ranges = prop->size / sizeof(ofw_pci_range_t); |
66 | range = prop->value; |
66 | range = prop->value; |
67 | 67 | ||
68 | int i; |
68 | unsigned int i; |
69 | 69 | ||
70 | for (i = 0; i < ranges; i++) { |
70 | for (i = 0; i < ranges; i++) { |
71 | if ((reg->space & PCI_SPACE_MASK) != (range[i].space & PCI_SPACE_MASK)) |
71 | if ((reg->space & PCI_SPACE_MASK) != (range[i].space & PCI_SPACE_MASK)) |
72 | continue; |
72 | continue; |
73 | if (overlaps(reg->addr, reg->size, range[i].child_base, range[i].size)) { |
73 | if (overlaps(reg->addr, reg->size, range[i].child_base, range[i].size)) { |
74 | *pa = range[i].parent_base + (reg->addr - range[i].child_base); |
74 | *pa = range[i].parent_base + (reg->addr - range[i].child_base); |
75 | return true; |
75 | return true; |
76 | } |
76 | } |
77 | } |
77 | } |
78 | 78 | ||
79 | return false; |
79 | return false; |
80 | } |
80 | } |
81 | 81 | ||
82 | bool ofw_pci_reg_absolutize(ofw_tree_node_t *node, ofw_pci_reg_t *reg, ofw_pci_reg_t *out) |
82 | bool ofw_pci_reg_absolutize(ofw_tree_node_t *node, ofw_pci_reg_t *reg, ofw_pci_reg_t *out) |
83 | { |
83 | { |
84 | if (reg->space & PCI_ABS_MASK) { |
84 | if (reg->space & PCI_ABS_MASK) { |
85 | /* already absolute */ |
85 | /* already absolute */ |
86 | out->space = reg->space; |
86 | out->space = reg->space; |
87 | out->addr = reg->addr; |
87 | out->addr = reg->addr; |
88 | out->size = reg->size; |
88 | out->size = reg->size; |
89 | return true; |
89 | return true; |
90 | } |
90 | } |
91 | 91 | ||
92 | ofw_tree_property_t *prop; |
92 | ofw_tree_property_t *prop; |
93 | ofw_pci_reg_t *assigned_address; |
93 | ofw_pci_reg_t *assigned_address; |
94 | count_t assigned_addresses; |
94 | count_t assigned_addresses; |
95 | 95 | ||
96 | prop = ofw_tree_getprop(node, "assigned-addresses"); |
96 | prop = ofw_tree_getprop(node, "assigned-addresses"); |
97 | if (!prop) |
97 | if (!prop) |
98 | panic("Can't find \"assigned-addresses\" property.\n"); |
98 | panic("Can't find \"assigned-addresses\" property.\n"); |
99 | 99 | ||
100 | assigned_addresses = prop->size / sizeof(ofw_pci_reg_t); |
100 | assigned_addresses = prop->size / sizeof(ofw_pci_reg_t); |
101 | assigned_address = prop->value; |
101 | assigned_address = prop->value; |
102 | 102 | ||
103 | int i; |
103 | unsigned int i; |
104 | 104 | ||
105 | for (i = 0; i < assigned_addresses; i++) { |
105 | for (i = 0; i < assigned_addresses; i++) { |
106 | if ((assigned_address[i].space & PCI_REG_MASK) == (reg->space & PCI_REG_MASK)) { |
106 | if ((assigned_address[i].space & PCI_REG_MASK) == (reg->space & PCI_REG_MASK)) { |
107 | out->space = assigned_address[i].space; |
107 | out->space = assigned_address[i].space; |
108 | out->addr = reg->addr + assigned_address[i].addr; |
108 | out->addr = reg->addr + assigned_address[i].addr; |
109 | out->size = reg->size; |
109 | out->size = reg->size; |
110 | return true; |
110 | return true; |
111 | } |
111 | } |
112 | } |
112 | } |
113 | 113 | ||
114 | return false; |
114 | return false; |
115 | } |
115 | } |
116 | 116 | ||
117 | /** Map PCI interrupt. |
117 | /** Map PCI interrupt. |
118 | * |
118 | * |
119 | * So far, we only know how to map interrupts of non-PCI devices connected |
119 | * So far, we only know how to map interrupts of non-PCI devices connected |
120 | * to a PCI bridge. |
120 | * to a PCI bridge. |
121 | */ |
121 | */ |
122 | bool ofw_pci_map_interrupt(ofw_tree_node_t *node, ofw_pci_reg_t *reg, int ino, int *inr) |
122 | bool ofw_pci_map_interrupt(ofw_tree_node_t *node, ofw_pci_reg_t *reg, int ino, int *inr) |
123 | { |
123 | { |
124 | pci_t *pci = node->device; |
124 | pci_t *pci = node->device; |
125 | if (!pci) { |
125 | if (!pci) { |
126 | pci = pci_init(node); |
126 | pci = pci_init(node); |
127 | if (!pci) |
127 | if (!pci) |
128 | return false; |
128 | return false; |
129 | node->device = pci; |
129 | node->device = pci; |
130 | } |
130 | } |
131 | 131 | ||
132 | pci_enable_interrupt(pci, ino); |
132 | pci_enable_interrupt(pci, ino); |
133 | 133 | ||
134 | *inr = (PCI_IGN << IGN_SHIFT) | ino; |
134 | *inr = (PCI_IGN << IGN_SHIFT) | ino; |
135 | 135 | ||
136 | return true; |
136 | return true; |
137 | } |
137 | } |
138 | 138 | ||
139 | /** @} |
139 | /** @} |
140 | */ |
140 | */ |
141 | 141 |