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nios2: use the generic uncached segment support in dma-direct

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Stop providing our own arch alloc/free hooks and just expose the segment
offset and use the generic dma-direct allocator.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Ley Foon Tan <ley.foon.tan@intel.com>
This commit is contained in:
Christoph Hellwig
2019-04-28 14:00:52 -05:00
parent 6309513c1b
commit b1acd4b8a8
3 changed files with 19 additions and 28 deletions
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6
arch/nios2/include/asm/page.h
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@@ -101,12 +101,6 @@ static inline bool pfn_valid(unsigned long pfn)
# define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \
VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
# define UNCAC_ADDR(addr) \
((void *)((unsigned)(addr) | CONFIG_NIOS2_IO_REGION_BASE))
# define CAC_ADDR(addr) \
((void *)(((unsigned)(addr) & ~CONFIG_NIOS2_IO_REGION_BASE) | \
CONFIG_NIOS2_KERNEL_REGION_BASE))
#include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h>