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Diffstat (limited to 'include/dm/fdtaddr.h')
| -rw-r--r-- | include/dm/fdtaddr.h | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/include/dm/fdtaddr.h b/include/dm/fdtaddr.h new file mode 100644 index 0000000..959d3bc --- /dev/null +++ b/include/dm/fdtaddr.h @@ -0,0 +1,149 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (c) 2017 Google, Inc + * + * (C) Copyright 2012 + * Pavel Herrmann <morpheus.ibis@gmail.com> + * Marek Vasut <marex@denx.de> + */ + +#ifndef _DM_FDTADDR_H +#define _DM_FDTADDR_H + +#include <fdtdec.h> + +struct udevice; + +/** + * devfdt_get_addr() - Get the reg property of a device + * + * @dev: Pointer to a device + * + * @return addr + */ +fdt_addr_t devfdt_get_addr(struct udevice *dev); + +/** + * devfdt_get_addr_ptr() - Return pointer to the address of the reg property + * of a device + * + * @dev: Pointer to a device + * + * @return Pointer to addr, or NULL if there is no such property + */ +void *devfdt_get_addr_ptr(struct udevice *dev); + +/** + * devfdt_remap_addr() - Return pointer to the memory-mapped I/O address + * of the reg property of a device + * + * @dev: Pointer to a device + * + * @return Pointer to addr, or NULL if there is no such property + */ +void *devfdt_remap_addr(struct udevice *dev); + +/** + * devfdt_remap_addr_index() - Return indexed pointer to the memory-mapped + * I/O address of the reg property of a device + * @index: the 'reg' property can hold a list of <addr, size> pairs + * and @index is used to select which one is required + * + * @dev: Pointer to a device + * + * @return Pointer to addr, or NULL if there is no such property + */ +void *devfdt_remap_addr_index(struct udevice *dev, int index); + +/** + * devfdt_remap_addr_name() - Get the reg property of a device, indexed by + * name, as a memory-mapped I/O pointer + * @name: the 'reg' property can hold a list of <addr, size> pairs, with the + * 'reg-names' property providing named-based identification. @index + * indicates the value to search for in 'reg-names'. + * + * @dev: Pointer to a device + * + * @return Pointer to addr, or NULL if there is no such property + */ +void *devfdt_remap_addr_name(struct udevice *dev, const char *name); + +/** + * devfdt_map_physmem() - Read device address from reg property of the + * device node and map the address into CPU address + * space. + * + * @dev: Pointer to device + * @size: size of the memory to map + * + * @return mapped address, or NULL if the device does not have reg + * property. + */ +void *devfdt_map_physmem(struct udevice *dev, unsigned long size); + +/** + * devfdt_get_addr_index() - Get the indexed reg property of a device + * + * @dev: Pointer to a device + * @index: the 'reg' property can hold a list of <addr, size> pairs + * and @index is used to select which one is required + * + * @return addr + */ +fdt_addr_t devfdt_get_addr_index(struct udevice *dev, int index); + +/** + * devfdt_get_addr_size_index() - Get the indexed reg property of a device + * + * Returns the address and size specified in the 'reg' property of a device. + * + * @dev: Pointer to a device + * @index: the 'reg' property can hold a list of <addr, size> pairs + * and @index is used to select which one is required + * @size: Pointer to size varible - this function returns the size + * specified in the 'reg' property here + * + * @return addr + */ +fdt_addr_t devfdt_get_addr_size_index(struct udevice *dev, int index, + fdt_size_t *size); + +/** + * devfdt_get_addr_name() - Get the reg property of a device, indexed by name + * + * @dev: Pointer to a device + * @name: the 'reg' property can hold a list of <addr, size> pairs, with the + * 'reg-names' property providing named-based identification. @index + * indicates the value to search for in 'reg-names'. + * + * @return addr + */ +fdt_addr_t devfdt_get_addr_name(struct udevice *dev, const char *name); + +/** + * devfdt_get_addr_size_name() - Get the reg property and its size for a device, + * indexed by name + * + * Returns the address and size specified in the 'reg' property of a device. + * + * @dev: Pointer to a device + * @name: the 'reg' property can hold a list of <addr, size> pairs, with the + * 'reg-names' property providing named-based identification. @index + * indicates the value to search for in 'reg-names'. + * @size: Pointer to size variable - this function returns the size + * specified in the 'reg' property here + * + * @return addr + */ +fdt_addr_t devfdt_get_addr_size_name(struct udevice *dev, const char *name, + fdt_size_t *size); + +/** + * devfdt_get_addr_pci() - Read an address and handle PCI address translation + * + * @dev: Device to read from + * @return address or FDT_ADDR_T_NONE if not found + */ +fdt_addr_t devfdt_get_addr_pci(struct udevice *dev); + +#endif |