diff options
| author | Nicolas Saenz Julienne <nsaenzjulienne@suse.de> | 2021-01-12 13:55:26 +0100 |
|---|---|---|
| committer | Matthias Brugger <mbrugger@suse.com> | 2021-02-18 11:56:25 +0100 |
| commit | 2a15a25c362bbeddf0c8e6fcfb142321076eb904 (patch) | |
| tree | e8d5fab88c3f96d344f46bcd945d609a30b1aa96 /include/phys2bus.h | |
| parent | e88018769cd3ed69d2f1623fe03a02dcb0be073a (diff) | |
dm: Introduce dev_phys_to_bus()/dev_bus_to_phys()
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>
Diffstat (limited to 'include/phys2bus.h')
| -rw-r--r-- | include/phys2bus.h | 17 |
1 files changed, 17 insertions, 0 deletions
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 |