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https://github.com/AsahiLinux/u-boot
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2a15a25c36
These functions, instead of relying on hard-coded platform-specific address translations, make use of the DMA constraints provided by the DM core. This allows for per-device translations. We can't yet get rid of the legacy phys_to_bus()/bus_to_phys() implementations as some of its users are not integrated into the device model. Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Stefan Roese <sr@denx.de> Tested-by: Peter Robinson <pbrobinson@gmail.com> Signed-off-by: Matthias Brugger <mbrugger@suse.com>
41 lines
808 B
C
41 lines
808 B
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright 2015 Stephen Warren
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*/
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#ifndef _BUS_ADDR_H
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#define _BUS_ADDR_H
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#ifdef CONFIG_PHYS_TO_BUS
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unsigned long phys_to_bus(unsigned long phys);
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unsigned long bus_to_phys(unsigned long bus);
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#else
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static inline unsigned long phys_to_bus(unsigned long phys)
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{
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return phys;
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}
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static inline unsigned long bus_to_phys(unsigned long bus)
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{
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return bus;
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}
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#endif
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#if CONFIG_IS_ENABLED(DM)
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#include <dm/device.h>
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static inline dma_addr_t dev_phys_to_bus(struct udevice *dev, phys_addr_t phys)
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{
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return phys - dev_get_dma_offset(dev);
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}
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static inline phys_addr_t dev_bus_to_phys(struct udevice *dev, dma_addr_t bus)
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{
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return bus + dev_get_dma_offset(dev);
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}
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#else
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#define dev_phys_to_bus(_, _addr) _addr
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#define dev_bus_to_phys(_, _addr) _addr
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#endif
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#endif
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