[PATCH v2 0/3] firmware: zynqmp-fpga: fix fpga loading with optimized string functions

[Sascha Hauer]

On Thu, Aug 19, 2021 at 10:12:48AM +0200, Michael Tretter wrote:
> If CONFIG_ARM_OPTIMZED_STRING_FUNCTIONS is enabled, loading the FPGA fails
> with an abort, because the optimized memcpy can only be used on cached memory.
> As the bitstream can be several MBs large, we want to use the optimized
> functions. Fix the abort by using a cached mapping with streaming DMA.
> 
> v2 drops the explicit dma_sync_single_for_device and instead uses
> dma_map_single to flush the temporary buffer. I also fixed the error handling
> in case the mapping fails and made the size of the extra space at the end of
> the temporary buffer more explicit.
> 
> Michael
> 
> Changelog:
> 
> Michael Tretter (3):
>   firmware: zynqmp-fpga: initialize flags at function start
>   firmware: zynqmp-fpga: avoid additional buffer for size argument
>   firmware: zynqmp-fpga: do not use DMA coherent memory for bitstream
> 
>  drivers/firmware/zynqmp-fpga.c | 55 +++++++++++++++++-----------------
>  1 file changed, 27 insertions(+), 28 deletions(-)

Applied, thanks

Sascha

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