1 | /* |
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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 | |
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29 | #ifndef KERN_OFW_TREE_H_ |
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30 | #define KERN_OFW_TREE_H_ |
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31 | |
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32 | #include <arch/types.h> |
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33 | #include <typedefs.h> |
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34 | |
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35 | #define OFW_TREE_PROPERTY_MAX_NAMELEN 32 |
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36 | |
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37 | /** Memory representation of OpenFirmware device tree node property. */ |
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38 | typedef struct { |
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39 | char name[OFW_TREE_PROPERTY_MAX_NAMELEN]; |
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40 | size_t size; |
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41 | void *value; |
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42 | } ofw_tree_property_t; |
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43 | |
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44 | /** Memory representation of OpenFirmware device tree node. */ |
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45 | typedef struct ofw_tree_node { |
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46 | struct ofw_tree_node *parent; |
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47 | struct ofw_tree_node *peer; |
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48 | struct ofw_tree_node *child; |
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49 | |
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50 | uint32_t node_handle; /**< Old OpenFirmware node handle. */ |
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51 | |
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52 | char *da_name; /**< Disambigued name. */ |
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53 | |
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54 | unsigned int properties; /**< Number of properties. */ |
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55 | ofw_tree_property_t *property; |
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56 | |
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57 | /** |
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58 | * Pointer to a structure representing respective device. |
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59 | * Its semantics is device dependent. |
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60 | */ |
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61 | void *device; |
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62 | } ofw_tree_node_t; |
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63 | |
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64 | /* Walker for visiting OpenFirmware device tree nodes. */ |
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65 | typedef bool (* ofw_tree_walker_t)(ofw_tree_node_t *, void *); |
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66 | |
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67 | extern void ofw_tree_init(ofw_tree_node_t *); |
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68 | extern void ofw_tree_print(void); |
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69 | |
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70 | extern const char *ofw_tree_node_name(const ofw_tree_node_t *); |
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71 | extern ofw_tree_node_t *ofw_tree_lookup(const char *); |
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72 | extern ofw_tree_property_t *ofw_tree_getprop(const ofw_tree_node_t *, |
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73 | const char *); |
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74 | extern void ofw_tree_walk_by_device_type(const char *, ofw_tree_walker_t, |
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75 | void *); |
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76 | |
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77 | extern ofw_tree_node_t *ofw_tree_find_child(ofw_tree_node_t *, const char *); |
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78 | extern ofw_tree_node_t *ofw_tree_find_child_by_device_type(ofw_tree_node_t *, |
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79 | const char *); |
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80 | |
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81 | extern ofw_tree_node_t *ofw_tree_find_peer_by_device_type(ofw_tree_node_t *, |
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82 | const char *); |
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83 | extern ofw_tree_node_t *ofw_tree_find_peer_by_name(ofw_tree_node_t *, |
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84 | const char *); |
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85 | extern ofw_tree_node_t *ofw_tree_find_node_by_handle(ofw_tree_node_t *, |
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86 | uint32_t); |
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87 | |
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88 | #endif |
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