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authorAubrey Li <aubrey.li@analog.com>2007-05-21 06:09:28 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-21 12:50:22 -0400
commit5f9a3e899897201a49965cd9e1bb2570b3bde2b5 (patch)
tree27616f6c6e49f2bafe2681441576e491bfbce0e1 /arch/blackfin/kernel/bfin_dma_5xx.c
parent5079df993c3ab45af10dc9a45b3b9e712fd56f23 (diff)
Blackfin arch: dma_memcpy borken for > 64K
Signed-off-by: Aubrey Li <aubrey.li@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/blackfin/kernel/bfin_dma_5xx.c')
-rw-r--r--arch/blackfin/kernel/bfin_dma_5xx.c17
1 files changed, 16 insertions, 1 deletions
diff --git a/arch/blackfin/kernel/bfin_dma_5xx.c b/arch/blackfin/kernel/bfin_dma_5xx.c
index 1c344acfd487..0ccb0dc3f833 100644
--- a/arch/blackfin/kernel/bfin_dma_5xx.c
+++ b/arch/blackfin/kernel/bfin_dma_5xx.c
@@ -595,7 +595,7 @@ unsigned short get_dma_curr_ycount(unsigned int channel)
595} 595}
596EXPORT_SYMBOL(get_dma_curr_ycount); 596EXPORT_SYMBOL(get_dma_curr_ycount);
597 597
598void *dma_memcpy(void *dest, const void *src, size_t size) 598void *_dma_memcpy(void *dest, const void *src, size_t size)
599{ 599{
600 int direction; /* 1 - address decrease, 0 - address increase */ 600 int direction; /* 1 - address decrease, 0 - address increase */
601 int flag_align; /* 1 - address aligned, 0 - address unaligned */ 601 int flag_align; /* 1 - address aligned, 0 - address unaligned */
@@ -734,6 +734,21 @@ void *dma_memcpy(void *dest, const void *src, size_t size)
734 734
735 return dest; 735 return dest;
736} 736}
737
738void *dma_memcpy(void *dest, const void *src, size_t size)
739{
740 size_t bulk;
741 size_t rest;
742 void * addr;
743
744 bulk = (size >> 16) << 16;
745 rest = size - bulk;
746 if (bulk)
747 _dma_memcpy(dest, src, bulk);
748 addr = _dma_memcpy(dest+bulk, src+bulk, rest);
749 return addr;
750}
751
737EXPORT_SYMBOL(dma_memcpy); 752EXPORT_SYMBOL(dma_memcpy);
738 753
739void *safe_dma_memcpy(void *dest, const void *src, size_t size) 754void *safe_dma_memcpy(void *dest, const void *src, size_t size)