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