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| author |   Michael Hennerich <michael.hennerich@analog.com> | 2007-05-21 18:09:17 +0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-21 09:50:22 -0700 |
| commit | 23ee968d96ef5ad564c0f0b8a30412fb93137ebb (patch) | |
| tree | a323c73062fa32a794e254a39c519650f0efe4b9 /include/asm-blackfin | |
| parent | Blackfin arch: Move write to VR_CTL closer to IDLE (diff) | |
| download | linux-dev-23ee968d96ef5ad564c0f0b8a30412fb93137ebb.tar.xz linux-dev-23ee968d96ef5ad564c0f0b8a30412fb93137ebb.zip | |
Blackfin arch: DMA operation cleanup
1) Disable Interrupts during DMA memcpy to avoid raise conditions.
2) Mark MDMA channel 0 as reserved, since were using it internally.
3) Add DMA based equivalents for insX and outsX.
4) Our insX and outsX only handles len <= 2^16.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-blackfin')
| -rw-r--r-- | include/asm-blackfin/io.h | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/include/asm-blackfin/io.h b/include/asm-blackfin/io.h index 7e6995e80d97..eac8bcaf64c2 100644 --- a/include/asm-blackfin/io.h +++ b/include/asm-blackfin/io.h @@ -115,13 +115,21 @@ static inline unsigned int readl(void __iomem *addr) #ifndef __ASSEMBLY__ -extern void outsb(void __iomem *port, const void *addr, unsigned long count); -extern void outsw(void __iomem *port, const void *addr, unsigned long count); -extern void outsl(void __iomem *port, const void *addr, unsigned long count); +extern void outsb(void __iomem *port, const void *addr, unsigned short count); +extern void outsw(void __iomem *port, const void *addr, unsigned short count); +extern void outsl(void __iomem *port, const void *addr, unsigned short count); -extern void insb(const void __iomem *port, void *addr, unsigned long count); -extern void insw(const void __iomem *port, void *addr, unsigned long count); -extern void insl(const void __iomem *port, void *addr, unsigned long count); +extern void insb(const void __iomem *port, void *addr, unsigned short count); +extern void insw(const void __iomem *port, void *addr, unsigned short count); +extern void insl(const void __iomem *port, void *addr, unsigned short count); + +extern void dma_outsb(void __iomem *port, const void *addr, unsigned short count); +extern void dma_outsw(void __iomem *port, const void *addr, unsigned short count); +extern void dma_outsl(void __iomem *port, const void *addr, unsigned short count); + +extern void dma_insb(const void __iomem *port, void *addr, unsigned short count); +extern void dma_insw(const void __iomem *port, void *addr, unsigned short count); +extern void dma_insl(const void __iomem *port, void *addr, unsigned short count); /* * Map some physical address range into the kernel address space. |