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 --- include/phys2bus.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)
diff --git a/include/phys2bus.h b/include/phys2bus.h index dc9b8e5a25..866b8b51a8 100644 --- a/include/phys2bus.h +++ b/include/phys2bus.h @@ -21,4 +21,21 @@ static inline unsigned long bus_to_phys(unsigned long bus) } #endif
+#if CONFIG_IS_ENABLED(DM) +#include <dm/device.h> + +static inline dma_addr_t dev_phys_to_bus(struct udevice *dev, phys_addr_t phys) +{ + return phys - dev_get_dma_offset(dev); +} + +static inline phys_addr_t dev_bus_to_phys(struct udevice *dev, dma_addr_t bus) +{ + return bus + dev_get_dma_offset(dev); +} +#else +#define dev_phys_to_bus(_, _addr) _addr +#define dev_bus_to_phys(_, _addr) _addr +#endif + #endif