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093d0faf57
This allows SLUB debugging to be used without fear of messing up DMA transfers. SPI is one example that easily breaks without this patch. Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
39 lines
976 B
C
39 lines
976 B
C
#ifndef __ASM_AVR32_CACHE_H
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#define __ASM_AVR32_CACHE_H
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#define L1_CACHE_SHIFT 5
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#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
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/*
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* Memory returned by kmalloc() may be used for DMA, so we must make
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* sure that all such allocations are cache aligned. Otherwise,
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* unrelated code may cause parts of the buffer to be read into the
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* cache before the transfer is done, causing old data to be seen by
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* the CPU.
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*/
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#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES
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#ifndef __ASSEMBLER__
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struct cache_info {
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unsigned int ways;
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unsigned int sets;
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unsigned int linesz;
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};
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#endif /* __ASSEMBLER */
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/* Cache operation constants */
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#define ICACHE_FLUSH 0x00
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#define ICACHE_INVALIDATE 0x01
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#define ICACHE_LOCK 0x02
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#define ICACHE_UNLOCK 0x03
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#define ICACHE_PREFETCH 0x04
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#define DCACHE_FLUSH 0x08
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#define DCACHE_LOCK 0x09
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#define DCACHE_UNLOCK 0x0a
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#define DCACHE_INVALIDATE 0x0b
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#define DCACHE_CLEAN 0x0c
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#define DCACHE_CLEAN_INVAL 0x0d
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#endif /* __ASM_AVR32_CACHE_H */
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