@@ -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();
@@ -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)
@@ -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 */
@@ -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)
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> --- This patch is required to apply 'net: macb: enable dcache in macb' [1] without build errors. The patch is currently only compile tested, runtime tests pending. [1] http://patchwork.ozlabs.org/patch/352786/ arch/avr32/cpu/cache.c | 20 ++++++++++---------- arch/avr32/include/asm/arch-at32ap700x/cacheflush.h | 2 -- arch/avr32/include/asm/dma-mapping.h | 6 ++++-- arch/avr32/lib/board.c | 4 ++-- 4 files changed, 16 insertions(+), 16 deletions(-)