Rev 4490 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
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| 1896 | jermar | 1 | /* |
| 2071 | jermar | 2 | * Copyright (c) 2006 Jakub Jermar |
| 1896 | jermar | 3 | * All rights reserved. |
| 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 FHC '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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| 1909 | jermar | 39 | #include <arch/drivers/fhc.h> |
| 1896 | jermar | 40 | #include <arch/memstr.h> |
| 4011 | svoboda | 41 | #include <string.h> |
| 1896 | jermar | 42 | #include <panic.h> |
| 43 | #include <macros.h> |
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| 44 | |||
| 45 | bool ofw_fhc_apply_ranges(ofw_tree_node_t *node, ofw_fhc_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_fhc_range_t *range; |
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| 4490 | decky | 49 | size_t ranges; |
| 1896 | jermar | 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_fhc_range_t); |
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| 56 | range = prop->value; |
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| 57 | |||
| 2745 | decky | 58 | unsigned int i; |
| 1896 | jermar | 59 | |
| 60 | for (i = 0; i < ranges; i++) { |
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| 61 | if (overlaps(reg->addr, reg->size, range[i].child_base, range[i].size)) { |
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| 62 | uintptr_t addr; |
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| 63 | |||
| 64 | addr = range[i].parent_base + (reg->addr - range[i].child_base); |
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| 65 | if (!node->parent->parent) { |
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| 66 | *pa = addr; |
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| 67 | return true; |
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| 68 | } |
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| 4220 | decky | 69 | if (str_cmp(ofw_tree_node_name(node->parent), "central") != 0) |
| 3790 | svoboda | 70 | panic("Unexpected parent node: %s.", ofw_tree_node_name(node->parent)); |
| 1896 | jermar | 71 | |
| 72 | ofw_central_reg_t central_reg; |
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| 73 | |||
| 74 | central_reg.addr = addr; |
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| 75 | central_reg.size = reg->size; |
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| 76 | |||
| 77 | return ofw_central_apply_ranges(node->parent, ¢ral_reg, pa); |
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| 78 | } |
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| 79 | } |
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| 80 | |||
| 81 | return false; |
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| 82 | } |
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| 83 | |||
| 84 | bool ofw_central_apply_ranges(ofw_tree_node_t *node, ofw_central_reg_t *reg, uintptr_t *pa) |
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| 85 | { |
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| 86 | if (node->parent->parent) |
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| 3790 | svoboda | 87 | panic("Unexpected parent node: %s.", ofw_tree_node_name(node->parent)); |
| 1896 | jermar | 88 | |
| 89 | ofw_tree_property_t *prop; |
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| 90 | ofw_central_range_t *range; |
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| 4490 | decky | 91 | size_t ranges; |
| 1896 | jermar | 92 | |
| 93 | prop = ofw_tree_getprop(node, "ranges"); |
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| 94 | if (!prop) |
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| 95 | return false; |
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| 96 | |||
| 97 | ranges = prop->size / sizeof(ofw_central_range_t); |
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| 98 | range = prop->value; |
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| 99 | |||
| 2745 | decky | 100 | unsigned int i; |
| 1896 | jermar | 101 | |
| 102 | for (i = 0; i < ranges; i++) { |
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| 103 | if (overlaps(reg->addr, reg->size, range[i].child_base, range[i].size)) { |
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| 104 | *pa = range[i].parent_base + (reg->addr - range[i].child_base); |
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| 105 | return true; |
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| 106 | } |
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| 107 | } |
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| 108 | |||
| 109 | return false; |
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| 110 | } |
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| 111 | |||
| 3655 | jermar | 112 | bool |
| 113 | ofw_fhc_map_interrupt(ofw_tree_node_t *node, ofw_fhc_reg_t *reg, |
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| 114 | uint32_t interrupt, int *inr, cir_t *cir, void **cir_arg) |
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| 1909 | jermar | 115 | { |
| 116 | fhc_t *fhc = NULL; |
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| 117 | if (!node->device) { |
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| 118 | fhc = fhc_init(node); |
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| 119 | if (!fhc) |
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| 120 | return false; |
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| 121 | node->device = fhc; |
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| 122 | central_fhc = fhc; |
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| 123 | } |
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| 124 | |||
| 125 | /* |
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| 126 | * The interrupt controller for the interrupt is the FHC itself. |
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| 127 | */ |
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| 128 | fhc_enable_interrupt(fhc, interrupt); |
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| 129 | |||
| 1910 | jermar | 130 | *inr = interrupt; |
| 3655 | jermar | 131 | *cir = fhc_clear_interrupt; |
| 132 | *cir_arg = fhc; |
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| 1909 | jermar | 133 | return true; |
| 134 | } |
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| 135 | |||
| 1896 | jermar | 136 | /** @} |
| 137 | */ |