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>

diff --git a/arch/avr32/cpu/cache.c b/arch/avr32/cpu/cache.c
index ab0374e587b4ad478fc97d5ace0f426ad26c7745..b3ffc3348b514e90805336b4e1a308b37b84bf92 100644 (file)
--- 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 13d6d3aed366d875357f37e171ae315d63b52bd7..e08cd9de6d22687d22d1cde3872efb74f3f07271 100644 (file)
--- 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 95ea81ff5e624f7b2d11edf9293afe8b164b0518..dbdd2fee3806c32e7c8a48597d0b603882cd7564 100644 (file)
--- 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 7680102f523f2f8ba5ea090d08d7fad4235a0bd1..bf0997f98dc3802626418d190bb3cec2e165992c 100644 (file)
--- 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)