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a383c96892
Rework dev_phys_to_bus() and dev_bus_to_phys() to respect the size of the area specified in dma-ranges DT property. The area outside of ranges is remapped 1:1, while the area in the ranges is remapped according to the description in the dma-ranges property. Adjust the test to test the area within the remapped range, not area outside the remapped range, which was incorrect. Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> Reviewed-by: Markus Schneider-Pargmann <msp@baylibre.com>
48 lines
1.0 KiB
C
48 lines
1.0 KiB
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_DMA)
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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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/* If the PA is in the remap range, apply remap. */
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if (phys >= dev->dma_cpu && phys < dev->dma_cpu + dev->dma_size)
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phys -= dev->dma_cpu - dev->dma_bus;
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return phys;
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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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/* If the DA is in the remap range, apply remap. */
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if (bus >= dev->dma_bus && bus < dev->dma_bus + dev->dma_size)
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bus += dev->dma_cpu - dev->dma_bus;
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return bus;
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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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