1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Copyright (c) 2017 Google, Inc 4 * 5 * (C) Copyright 2012 6 * Pavel Herrmann <morpheus.ibis@gmail.com> 7 * Marek Vasut <marex@denx.de> 8 */ 9 10 #ifndef _DM_FDTADDR_H 11 #define _DM_FDTADDR_H 12 13 #include <fdtdec.h> 14 15 struct udevice; 16 17 /** 18 * devfdt_get_addr() - Get the reg property of a device 19 * 20 * @dev: Pointer to a device 21 * 22 * @return addr 23 */ 24 fdt_addr_t devfdt_get_addr(struct udevice *dev); 25 26 /** 27 * devfdt_get_addr_ptr() - Return pointer to the address of the reg property 28 * of a device 29 * 30 * @dev: Pointer to a device 31 * 32 * @return Pointer to addr, or NULL if there is no such property 33 */ 34 void *devfdt_get_addr_ptr(struct udevice *dev); 35 36 /** 37 * devfdt_remap_addr() - Return pointer to the memory-mapped I/O address 38 * of the reg property of a device 39 * 40 * @dev: Pointer to a device 41 * 42 * @return Pointer to addr, or NULL if there is no such property 43 */ 44 void *devfdt_remap_addr(struct udevice *dev); 45 46 /** 47 * devfdt_remap_addr_index() - Return indexed pointer to the memory-mapped 48 * I/O address of the reg property of a device 49 * @index: the 'reg' property can hold a list of <addr, size> pairs 50 * and @index is used to select which one is required 51 * 52 * @dev: Pointer to a device 53 * 54 * @return Pointer to addr, or NULL if there is no such property 55 */ 56 void *devfdt_remap_addr_index(struct udevice *dev, int index); 57 58 /** 59 * devfdt_remap_addr_name() - Get the reg property of a device, indexed by 60 * name, as a memory-mapped I/O pointer 61 * @name: the 'reg' property can hold a list of <addr, size> pairs, with the 62 * 'reg-names' property providing named-based identification. @index 63 * indicates the value to search for in 'reg-names'. 64 * 65 * @dev: Pointer to a device 66 * 67 * @return Pointer to addr, or NULL if there is no such property 68 */ 69 void *devfdt_remap_addr_name(struct udevice *dev, const char *name); 70 71 /** 72 * devfdt_map_physmem() - Read device address from reg property of the 73 * device node and map the address into CPU address 74 * space. 75 * 76 * @dev: Pointer to device 77 * @size: size of the memory to map 78 * 79 * @return mapped address, or NULL if the device does not have reg 80 * property. 81 */ 82 void *devfdt_map_physmem(struct udevice *dev, unsigned long size); 83 84 /** 85 * devfdt_get_addr_index() - Get the indexed reg property of a device 86 * 87 * @dev: Pointer to a device 88 * @index: the 'reg' property can hold a list of <addr, size> pairs 89 * and @index is used to select which one is required 90 * 91 * @return addr 92 */ 93 fdt_addr_t devfdt_get_addr_index(struct udevice *dev, int index); 94 95 /** 96 * devfdt_get_addr_size_index() - Get the indexed reg property of a device 97 * 98 * Returns the address and size specified in the 'reg' property of a device. 99 * 100 * @dev: Pointer to a device 101 * @index: the 'reg' property can hold a list of <addr, size> pairs 102 * and @index is used to select which one is required 103 * @size: Pointer to size varible - this function returns the size 104 * specified in the 'reg' property here 105 * 106 * @return addr 107 */ 108 fdt_addr_t devfdt_get_addr_size_index(struct udevice *dev, int index, 109 fdt_size_t *size); 110 111 /** 112 * devfdt_get_addr_name() - Get the reg property of a device, indexed by name 113 * 114 * @dev: Pointer to a device 115 * @name: the 'reg' property can hold a list of <addr, size> pairs, with the 116 * 'reg-names' property providing named-based identification. @index 117 * indicates the value to search for in 'reg-names'. 118 * 119 * @return addr 120 */ 121 fdt_addr_t devfdt_get_addr_name(struct udevice *dev, const char *name); 122 123 /** 124 * dm_set_translation_offset() - Set translation offset 125 * @offs: Translation offset 126 * 127 * Some platforms need a special address translation. Those 128 * platforms (e.g. mvebu in SPL) can configure a translation 129 * offset in the DM by calling this function. It will be 130 * added to all addresses returned in devfdt_get_addr(). 131 */ 132 void dm_set_translation_offset(fdt_addr_t offs); 133 134 /** 135 * dm_get_translation_offset() - Get translation offset 136 * 137 * This function returns the translation offset that can 138 * be configured by calling dm_set_translation_offset(). 139 * 140 * @return translation offset for the device address (0 as default). 141 */ 142 fdt_addr_t dm_get_translation_offset(void); 143 144 #endif 145