[U-Boot] [PATCH v4] nios2: convert dma_alloc_coherent to use malloc_cache_aligned

Thomas Chou thomas at wytron.com.tw
Wed Oct 14 03:48:21 CEST 2015


Hi Marek,

>>> On 10/12/2015 06:32 PM, Marek Vasut wrote:
>>>> Wouldn't invalidate_dcache_range() be enough here ? You don't care
>>>> about
>>>> the data in the newly allocated area at this point I guess -- either
>>>> you
>>>> fill them in and then flush, for DMA from CPU to device OR you receive
>>>> data from device to CPU and then you invalidate this buffer again.

Thanks a lot for your suggestion. I added invalidate_dcache_range() 
which will check if the initda instruction is supported by the nios2 cpu.

Best regards,
Thomas


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