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authorMichael Hennerich <michael.hennerich@analog.com>2007-05-21 18:09:17 +0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-21 09:50:22 -0700
commit23ee968d96ef5ad564c0f0b8a30412fb93137ebb (patch)
treea323c73062fa32a794e254a39c519650f0efe4b9 /include/asm-blackfin
parentd1b945fdb62f3e6852fea5a8779c0151ac1e55a8 (diff)
downloadop-kernel-dev-23ee968d96ef5ad564c0f0b8a30412fb93137ebb.zip
op-kernel-dev-23ee968d96ef5ad564c0f0b8a30412fb93137ebb.tar.gz
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.h20
1 files changed, 14 insertions, 6 deletions
diff --git a/include/asm-blackfin/io.h b/include/asm-blackfin/io.h
index 7e6995e8..eac8bca 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.
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