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authorAndreas Bießmann <andreas.devel@googlemail.com>2014-06-12 22:07:52 +0200
committerAndreas Bießmann <andreas.devel@googlemail.com>2014-06-14 18:06:58 +0200
commit0e05543576b460afff506a169dfdaa6f02bde5c6 (patch)
treeaf1a8f951ff7509d99550bab33ba4a7e3d44eea3
parent0a26e1d6c394aacbf1153977b7348d1dff85db3f (diff)
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avr32: migrate cache functions
Unfortunately the avr32 cache implementation has another API than the one described in common.h. Migrate the flush/invalidate dcache functions to the common API to be usable in device drivers. Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com> CC: Josh Wu <josh.wu@atmel.com>
-rw-r--r--arch/avr32/cpu/cache.c20
-rw-r--r--arch/avr32/include/asm/arch-at32ap700x/cacheflush.h2
-rw-r--r--arch/avr32/include/asm/dma-mapping.h6
-rw-r--r--arch/avr32/lib/board.c4
4 files changed, 16 insertions, 16 deletions
diff --git a/arch/avr32/cpu/cache.c b/arch/avr32/cpu/cache.c
index ab0374e..b3ffc33 100644
--- a/arch/avr32/cpu/cache.c
+++ b/arch/avr32/cpu/cache.c
@@ -24,31 +24,31 @@ void dcache_clean_range(volatile void *start, size_t size)
sync_write_buffer();
}
-void dcache_invalidate_range(volatile void *start, size_t size)
+void invalidate_dcache_range(unsigned long start, unsigned long stop)
{
- unsigned long v, begin, end, linesz;
+ unsigned long v, linesz;
linesz = CONFIG_SYS_DCACHE_LINESZ;
/* You asked for it, you got it */
- begin = (unsigned long)start & ~(linesz - 1);
- end = ((unsigned long)start + size + linesz - 1) & ~(linesz - 1);
+ start = start & ~(linesz - 1);
+ stop = (stop + linesz - 1) & ~(linesz - 1);
- for (v = begin; v < end; v += linesz)
+ for (v = start; v < stop; v += linesz)
dcache_invalidate_line((void *)v);
}
-void dcache_flush_range(volatile void *start, size_t size)
+void flush_dcache_range(unsigned long start, unsigned long stop)
{
- unsigned long v, begin, end, linesz;
+ unsigned long v, linesz;
linesz = CONFIG_SYS_DCACHE_LINESZ;
/* You asked for it, you got it */
- begin = (unsigned long)start & ~(linesz - 1);
- end = ((unsigned long)start + size + linesz - 1) & ~(linesz - 1);
+ start = start & ~(linesz - 1);
+ stop = (stop + linesz - 1) & ~(linesz - 1);
- for (v = begin; v < end; v += linesz)
+ for (v = start; v < stop; v += linesz)
dcache_flush_line((void *)v);
sync_write_buffer();
diff --git a/arch/avr32/include/asm/arch-at32ap700x/cacheflush.h b/arch/avr32/include/asm/arch-at32ap700x/cacheflush.h
index 13d6d3a..e08cd9d 100644
--- a/arch/avr32/include/asm/arch-at32ap700x/cacheflush.h
+++ b/arch/avr32/include/asm/arch-at32ap700x/cacheflush.h
@@ -49,9 +49,7 @@ static inline void icache_invalidate_line(volatile void *vaddr)
* Applies the above functions on all lines that are touched by the
* specified virtual address range.
*/
-void dcache_invalidate_range(volatile void *start, size_t len);
void dcache_clean_range(volatile void *start, size_t len);
-void dcache_flush_range(volatile void *start, size_t len);
void icache_invalidate_range(volatile void *start, size_t len);
static inline void dcache_flush_unlocked(void)
diff --git a/arch/avr32/include/asm/dma-mapping.h b/arch/avr32/include/asm/dma-mapping.h
index 95ea81f..dbdd2fe 100644
--- a/arch/avr32/include/asm/dma-mapping.h
+++ b/arch/avr32/include/asm/dma-mapping.h
@@ -23,13 +23,15 @@ static inline unsigned long dma_map_single(volatile void *vaddr, size_t len,
switch (dir) {
case DMA_BIDIRECTIONAL:
- dcache_flush_range(vaddr, len);
+ flush_dcache_range((unsigned long)vaddr,
+ (unsigned long)vaddr + len);
break;
case DMA_TO_DEVICE:
dcache_clean_range(vaddr, len);
break;
case DMA_FROM_DEVICE:
- dcache_invalidate_range(vaddr, len);
+ invalidate_dcache_range((unsigned long)vaddr,
+ (unsigned long)vaddr + len);
break;
default:
/* This will cause a linker error */
diff --git a/arch/avr32/lib/board.c b/arch/avr32/lib/board.c
index 7680102..bf0997f 100644
--- a/arch/avr32/lib/board.c
+++ b/arch/avr32/lib/board.c
@@ -65,8 +65,8 @@ static void dma_alloc_init(void)
printf("DMA: Using memory from 0x%08lx to 0x%08lx\n",
dma_alloc_start, dma_alloc_end);
- dcache_invalidate_range(cached(dma_alloc_start),
- dma_alloc_end - dma_alloc_start);
+ invalidate_dcache_range((unsigned long)cached(dma_alloc_start),
+ dma_alloc_end);
}
void *dma_alloc_coherent(size_t len, unsigned long *handle)