| 1 | /*␊ |
| 2 | * Copyright (c) 2005 Apple Computer, Inc. All Rights Reserved.␊ |
| 3 | */␊ |
| 4 | ␊ |
| 5 | #ifndef __DEVICE_TREE_H␊ |
| 6 | #define __DEVICE_TREE_H␊ |
| 7 | ␊ |
| 8 | #include <stdbool.h>␊ |
| 9 | #include <stdint.h>␊ |
| 10 | ␊ |
| 11 | typedef struct _Property {␊ |
| 12 | char * name;␊ |
| 13 | uint32_t length;␊ |
| 14 | void * value;␊ |
| 15 | ␊ |
| 16 | struct _Property * next;␊ |
| 17 | } Property;␊ |
| 18 | ␊ |
| 19 | typedef struct _Node {␊ |
| 20 | struct _Property * properties;␊ |
| 21 | struct _Property * last_prop;␊ |
| 22 | ␊ |
| 23 | struct _Node * children;␊ |
| 24 | ␊ |
| 25 | struct _Node * next;␊ |
| 26 | } Node;␊ |
| 27 | ␊ |
| 28 | #define MAX_PCI_DEV_PATHS 4␊ |
| 29 | #define MAX_STRING_NUM_ENTRIES 100␊ |
| 30 | ␊ |
| 31 | #define DEV_PATH_HEADER␉␉\␊ |
| 32 | uint8_t␉␉type;␉␉\␊ |
| 33 | uint8_t␉␉subtype;␉\␊ |
| 34 | uint16_t␉length;␊ |
| 35 | ␊ |
| 36 | struct ACPIDevPath {␊ |
| 37 | ␉//uint8_t␉␉type;␉␉// = 2 ACPI device-path␊ |
| 38 | ␉//uint8_t␉␉subtype;␉// = 1 ACPI Device-path␊ |
| 39 | ␉//uint16_t␉ length;␉␉// = 0x0c␊ |
| 40 | ␉DEV_PATH_HEADER␊ |
| 41 | ␉uint32_t␉_HID;␉␉// = 0xD041030A ?␊ |
| 42 | ␉uint32_t␉_UID;␉␉// = 0x00000000 PCI ROOT␊ |
| 43 | };␊ |
| 44 | ␊ |
| 45 | struct PCIDevPath {␊ |
| 46 | ␉//uint8_t␉␉type;␉␉// = 1 Hardware device-path␊ |
| 47 | ␉//uint8_t␉␉subtype;␉// = 1 PCI␊ |
| 48 | ␉//uint16_t␉ length;␉␉// = 6␊ |
| 49 | ␉DEV_PATH_HEADER␊ |
| 50 | ␉uint8_t␉␉function;␉// pci func number␊ |
| 51 | ␉uint8_t␉␉device;␉␉// pci dev number␊ |
| 52 | };␊ |
| 53 | ␊ |
| 54 | struct DevicePathEnd {␊ |
| 55 | ␉//uint8_t␉␉type;␉␉// = 0x7f␊ |
| 56 | ␉//uint8_t␉␉subtype;␉// = 0xff␊ |
| 57 | ␉//uint16_t␉␉length;␉␉// = 4;␊ |
| 58 | ␉DEV_PATH_HEADER␊ |
| 59 | };␊ |
| 60 | ␊ |
| 61 | struct DevPropDevice {␊ |
| 62 | ␉uint32_t length;␊ |
| 63 | ␉uint16_t numentries;␊ |
| 64 | ␉uint16_t WHAT2;␉␉␉␉␉␉␉␉␉␉// 0x0000 ?␊ |
| 65 | ␉struct ACPIDevPath acpi_dev_path;␉␉␉␉␉// = 0x02010c00 0xd041030a␊ |
| 66 | ␉struct PCIDevPath pci_dev_path[MAX_PCI_DEV_PATHS]; // = 0x01010600 func dev␊ |
| 67 | ␉struct DevicePathEnd path_end;␉␉␉␉␉␉// = 0x7fff0400␊ |
| 68 | ␉uint8_t *data;␊ |
| 69 | ␉␊ |
| 70 | ␉// ------------------------␊ |
| 71 | ␉uint8_t␉ num_pci_devpaths;␊ |
| 72 | ␉struct DevPropString *string;␊ |
| 73 | ␉// ------------------------␊ |
| 74 | };␊ |
| 75 | ␊ |
| 76 | struct DevPropString {␊ |
| 77 | ␉uint32_t length;␊ |
| 78 | ␉uint32_t WHAT2;␉␉␉// 0x01000000 ?␊ |
| 79 | ␉uint16_t numentries;␊ |
| 80 | ␉uint16_t WHAT3;␉␉␉// 0x0000 ?␊ |
| 81 | ␉struct DevPropDevice *entries;␊ |
| 82 | };␊ |
| 83 | ␊ |
| 84 | ␊ |
| 85 | extern Property *␊ |
| 86 | DT__AddProperty(Node *node, const char *name, uint32_t length, void *value);␊ |
| 87 | ␊ |
| 88 | extern Node *␊ |
| 89 | DT__AddChild(Node *parent, const char *name);␊ |
| 90 | ␊ |
| 91 | Node *␊ |
| 92 | DT__FindNode(const char *path, bool createIfMissing);␊ |
| 93 | ␊ |
| 94 | extern void␊ |
| 95 | DT__FreeProperty(Property *prop);␊ |
| 96 | ␊ |
| 97 | extern void␊ |
| 98 | DT__FreeNode(Node *node);␊ |
| 99 | ␊ |
| 100 | extern char *␊ |
| 101 | DT__GetName(Node *node);␊ |
| 102 | ␊ |
| 103 | void␊ |
| 104 | DT__Initialize(void);␊ |
| 105 | ␊ |
| 106 | /*␊ |
| 107 | * Free up memory used by in-memory representation␊ |
| 108 | * of device tree.␊ |
| 109 | */␊ |
| 110 | extern void␊ |
| 111 | DT__Finalize(void);␊ |
| 112 | ␊ |
| 113 | void␊ |
| 114 | DT__FlattenDeviceTree(void **result, uint32_t *length);␊ |
| 115 | ␊ |
| 116 | #endif /* __DEVICE_TREE_H */␊ |
| 117 | |
