Hi Nicolas,
On Tue, 15 Dec 2020 at 10:23, Nicolas Saenz Julienne nsaenzjulienne@suse.de wrote:
Add the following functions to get a specific device's DMA ranges:
- dev_get_dma_range()
- ofnode_get_dma_range()
- of_get_dma_range()
- fdt_get_dma_range()
They are specially useful in oder to be able validate a physical address space range into a bus's and to convert addresses from and to address spaces.
Signed-off-by: Nicolas Saenz Julienne nsaenzjulienne@suse.de
Changes since v2:
- Return ENOENT instead of ENODEV
- Refcount OF nodes
Changes since v1:
- Fix wrong arguments in of_get_dma_range()'s call to of_translate_dma_address()
- Fix build in SPL/TPL and no LIBFDT supprt
- Add missing declaration in 'core/read.c'
- Address Matthias' comments
common/fdt_support.c | 73 +++++++++++++++++++++++++++++++++++++++ drivers/core/of_addr.c | 78 ++++++++++++++++++++++++++++++++++++++++++ drivers/core/ofnode.c | 9 +++++ drivers/core/read.c | 6 ++++ include/dm/of_addr.h | 17 +++++++++ include/dm/ofnode.h | 16 +++++++++ include/dm/read.h | 21 ++++++++++++ include/fdt_support.h | 14 ++++++++ 8 files changed, 234 insertions(+)
Reviewed-by: Simon Glass sjg@chromium.org
I don't suppose it is worth writing a version that uses the ofnode API and thus reduce code size? Probably not since if livetree is enabled, I doubt we would ever call the flattree one. Also it is nice to have the same livetree code as Linux, where possible.