Move this group of address-related functions into a new file. These use the flat device tree. Future work will provide new versions of these which can support the live tree. Signed-off-by: Simon Glass <sjg@chromium.org>master
Simon Glass
7 years ago
parent
9d922450aa
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d6ffb00a43
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/*
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* Device addresses |
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* |
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* Copyright (c) 2017 Google, Inc |
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* |
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* (C) Copyright 2012 |
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* Pavel Herrmann <morpheus.ibis@gmail.com> |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#include <common.h> |
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#include <dm.h> |
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#include <fdt_support.h> |
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#include <asm/io.h> |
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#include <dm/device-internal.h> |
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DECLARE_GLOBAL_DATA_PTR; |
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fdt_addr_t dev_get_addr_index(struct udevice *dev, int index) |
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{ |
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#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA) |
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fdt_addr_t addr; |
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if (CONFIG_IS_ENABLED(OF_TRANSLATE)) { |
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const fdt32_t *reg; |
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int len = 0; |
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int na, ns; |
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na = fdt_address_cells(gd->fdt_blob, |
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dev_of_offset(dev->parent)); |
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if (na < 1) { |
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debug("bad #address-cells\n"); |
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return FDT_ADDR_T_NONE; |
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} |
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ns = fdt_size_cells(gd->fdt_blob, dev_of_offset(dev->parent)); |
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if (ns < 0) { |
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debug("bad #size-cells\n"); |
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return FDT_ADDR_T_NONE; |
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} |
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reg = fdt_getprop(gd->fdt_blob, dev_of_offset(dev), "reg", |
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&len); |
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if (!reg || (len <= (index * sizeof(fdt32_t) * (na + ns)))) { |
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debug("Req index out of range\n"); |
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return FDT_ADDR_T_NONE; |
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} |
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reg += index * (na + ns); |
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/*
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* Use the full-fledged translate function for complex |
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* bus setups. |
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*/ |
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addr = fdt_translate_address((void *)gd->fdt_blob, |
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dev_of_offset(dev), reg); |
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} else { |
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/*
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* Use the "simple" translate function for less complex |
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* bus setups. |
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*/ |
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addr = fdtdec_get_addr_size_auto_parent(gd->fdt_blob, |
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dev_of_offset(dev->parent), dev_of_offset(dev), |
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"reg", index, NULL, false); |
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if (CONFIG_IS_ENABLED(SIMPLE_BUS) && addr != FDT_ADDR_T_NONE) { |
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if (device_get_uclass_id(dev->parent) == |
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UCLASS_SIMPLE_BUS) |
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addr = simple_bus_translate(dev->parent, addr); |
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} |
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} |
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/*
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* Some platforms need a special address translation. Those |
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* platforms (e.g. mvebu in SPL) can configure a translation |
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* offset in the DM by calling dm_set_translation_offset() that |
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* will get added to all addresses returned by dev_get_addr(). |
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*/ |
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addr += dm_get_translation_offset(); |
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return addr; |
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#else |
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return FDT_ADDR_T_NONE; |
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#endif |
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} |
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fdt_addr_t dev_get_addr_size_index(struct udevice *dev, int index, |
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fdt_size_t *size) |
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{ |
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#if CONFIG_IS_ENABLED(OF_CONTROL) |
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/*
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* Only get the size in this first call. We'll get the addr in the |
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* next call to the exisiting dev_get_xxx function which handles |
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* all config options. |
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*/ |
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fdtdec_get_addr_size_auto_noparent(gd->fdt_blob, dev_of_offset(dev), |
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"reg", index, size, false); |
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/*
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* Get the base address via the existing function which handles |
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* all Kconfig cases |
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*/ |
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return dev_get_addr_index(dev, index); |
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#else |
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return FDT_ADDR_T_NONE; |
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#endif |
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} |
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fdt_addr_t dev_get_addr_name(struct udevice *dev, const char *name) |
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{ |
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#if CONFIG_IS_ENABLED(OF_CONTROL) |
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int index; |
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index = fdt_stringlist_search(gd->fdt_blob, dev_of_offset(dev), |
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"reg-names", name); |
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if (index < 0) |
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return index; |
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return dev_get_addr_index(dev, index); |
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#else |
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return FDT_ADDR_T_NONE; |
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#endif |
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} |
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fdt_addr_t dev_get_addr(struct udevice *dev) |
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{ |
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return dev_get_addr_index(dev, 0); |
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} |
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void *dev_get_addr_ptr(struct udevice *dev) |
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{ |
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return (void *)(uintptr_t)dev_get_addr_index(dev, 0); |
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} |
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void *dev_map_physmem(struct udevice *dev, unsigned long size) |
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{ |
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fdt_addr_t addr = dev_get_addr(dev); |
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if (addr == FDT_ADDR_T_NONE) |
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return NULL; |
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return map_physmem(addr, size, MAP_NOCACHE); |
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} |
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@ -0,0 +1,110 @@ |
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/*
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* Copyright (c) 2017 Google, Inc |
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* |
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* (C) Copyright 2012 |
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* Pavel Herrmann <morpheus.ibis@gmail.com> |
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* Marek Vasut <marex@denx.de> |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#ifndef _DM_ADDR_H |
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#define _DM_ADDR_H |
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#include <fdtdec.h> |
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struct udevice; |
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/**
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* dev_get_addr() - Get the reg property of a device |
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* |
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* @dev: Pointer to a device |
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* |
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* @return addr |
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*/ |
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fdt_addr_t dev_get_addr(struct udevice *dev); |
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/**
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* dev_get_addr_ptr() - Return pointer to the address of the reg property |
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* of a device |
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* |
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* @dev: Pointer to a device |
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* |
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* @return Pointer to addr, or NULL if there is no such property |
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*/ |
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void *dev_get_addr_ptr(struct udevice *dev); |
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/**
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* dev_map_physmem() - Read device address from reg property of the |
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* device node and map the address into CPU address |
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* space. |
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* |
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* @dev: Pointer to device |
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* @size: size of the memory to map |
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* |
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* @return mapped address, or NULL if the device does not have reg |
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* property. |
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*/ |
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void *dev_map_physmem(struct udevice *dev, unsigned long size); |
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/**
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* dev_get_addr_index() - Get the indexed reg property of a device |
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* |
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* @dev: Pointer to a device |
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* @index: the 'reg' property can hold a list of <addr, size> pairs |
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* and @index is used to select which one is required |
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* |
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* @return addr |
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*/ |
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fdt_addr_t dev_get_addr_index(struct udevice *dev, int index); |
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/**
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* dev_get_addr_size_index() - Get the indexed reg property of a device |
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* |
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* Returns the address and size specified in the 'reg' property of a device. |
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* |
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* @dev: Pointer to a device |
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* @index: the 'reg' property can hold a list of <addr, size> pairs |
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* and @index is used to select which one is required |
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* @size: Pointer to size varible - this function returns the size |
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* specified in the 'reg' property here |
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* |
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* @return addr |
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*/ |
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fdt_addr_t dev_get_addr_size_index(struct udevice *dev, int index, |
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fdt_size_t *size); |
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/**
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* dev_get_addr_name() - Get the reg property of a device, indexed by name |
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* |
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* @dev: Pointer to a device |
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* @name: the 'reg' property can hold a list of <addr, size> pairs, with the |
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* 'reg-names' property providing named-based identification. @index |
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* indicates the value to search for in 'reg-names'. |
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* |
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* @return addr |
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*/ |
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fdt_addr_t dev_get_addr_name(struct udevice *dev, const char *name); |
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/**
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* dm_set_translation_offset() - Set translation offset |
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* @offs: Translation offset |
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* |
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* Some platforms need a special address translation. Those |
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* platforms (e.g. mvebu in SPL) can configure a translation |
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* offset in the DM by calling this function. It will be |
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* added to all addresses returned in dev_get_addr(). |
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*/ |
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void dm_set_translation_offset(fdt_addr_t offs); |
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/**
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* dm_get_translation_offset() - Get translation offset |
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* |
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* This function returns the translation offset that can |
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* be configured by calling dm_set_translation_offset(). |
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* |
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* @return translation offset for the device address (0 as default). |
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*/ |
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fdt_addr_t dm_get_translation_offset(void); |
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#endif |
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