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a47abd7bf4
This reverts commit d64b9cdcd4
.
As pointed by [1] and [2], the reverted patch made every DT 'reg'
property translatable. What the patch was trying to fix was fixed in a
different way from previously submitted patches which instead of
correcting the generic address translation function fixed the issue with
appropriate platform code.
[1] https://patchwork.ozlabs.org/project/uboot/patch/1614324949-61314-1-git-send-email-bmeng.cn@gmail.com/
[2] https://lore.kernel.org/linux-clk/20210402192054.7934-1-dariobin@libero.it/T/
Signed-off-by: Dario Binacchi <dariobin@libero.it>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
227 lines
5.2 KiB
C
227 lines
5.2 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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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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#include <common.h>
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#include <dm.h>
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#include <fdt_support.h>
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#include <log.h>
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#include <asm/global_data.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 devfdt_get_addr_index(const 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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if (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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/* Non translatable if #size-cells == 0 */
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addr = fdt_read_number(reg, na);
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}
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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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#if defined(CONFIG_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 by setting this value in the GD and enaling this
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* feature via CONFIG_TRANSLATION_OFFSET. This value will
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* get added to all addresses returned by devfdt_get_addr().
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*/
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addr += gd->translation_offset;
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#endif
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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 devfdt_get_addr_size_index(const 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 devfdt_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 devfdt_get_addr_name(const 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 devfdt_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 devfdt_get_addr_size_name(const struct udevice *dev,
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const char *name, fdt_size_t *size)
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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 devfdt_get_addr_size_index(dev, index, size);
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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 devfdt_get_addr(const struct udevice *dev)
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{
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return devfdt_get_addr_index(dev, 0);
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}
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void *devfdt_get_addr_ptr(const struct udevice *dev)
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{
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fdt_addr_t addr = devfdt_get_addr_index(dev, 0);
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return (addr == FDT_ADDR_T_NONE) ? NULL : (void *)(uintptr_t)addr;
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}
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void *devfdt_remap_addr_index(const struct udevice *dev, int index)
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{
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fdt_addr_t addr = devfdt_get_addr_index(dev, index);
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if (addr == FDT_ADDR_T_NONE)
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return NULL;
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return map_physmem(addr, 0, MAP_NOCACHE);
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}
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void *devfdt_remap_addr_name(const struct udevice *dev, const char *name)
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{
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fdt_addr_t addr = devfdt_get_addr_name(dev, name);
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if (addr == FDT_ADDR_T_NONE)
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return NULL;
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return map_physmem(addr, 0, MAP_NOCACHE);
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}
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void *devfdt_remap_addr(const struct udevice *dev)
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{
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return devfdt_remap_addr_index(dev, 0);
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}
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void *devfdt_map_physmem(const struct udevice *dev, unsigned long size)
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{
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fdt_addr_t addr = devfdt_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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fdt_addr_t devfdt_get_addr_pci(const struct udevice *dev)
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{
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ulong addr;
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addr = devfdt_get_addr(dev);
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if (CONFIG_IS_ENABLED(PCI) && IS_ENABLED(CONFIG_DM_PCI) &&
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addr == FDT_ADDR_T_NONE) {
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struct fdt_pci_addr pci_addr;
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u32 bar;
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int ret;
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ret = ofnode_read_pci_addr(dev_ofnode(dev), FDT_PCI_SPACE_MEM32,
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"reg", &pci_addr);
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if (ret) {
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/* try if there is any i/o-mapped register */
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ret = ofnode_read_pci_addr(dev_ofnode(dev),
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FDT_PCI_SPACE_IO, "reg",
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&pci_addr);
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if (ret)
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return FDT_ADDR_T_NONE;
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}
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ret = fdtdec_get_pci_bar32(dev, &pci_addr, &bar);
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if (ret)
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return FDT_ADDR_T_NONE;
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addr = bar;
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}
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return addr;
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}
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