nios2: convert dma_alloc_coherent to use malloc_cache_aligned

Convert dma_alloc_coherent to use memalign.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Reviewed-by: Marek Vasut <marex@denx.de>

diff --git a/arch/nios2/include/asm/dma-mapping.h b/arch/nios2/include/asm/dma-mapping.h
index 1350e3b96fdd9afc2acc056de07886603ad5fbd6..1562d35f0dc424376f025ee78e9344248a8407df 100644 (file)
--- a/arch/nios2/include/asm/dma-mapping.h
+++ b/arch/nios2/include/asm/dma-mapping.h
@@ -1,23 +1,24 @@
 #ifndef __ASM_NIOS2_DMA_MAPPING_H
 #define __ASM_NIOS2_DMA_MAPPING_H
 
-/* dma_alloc_coherent() return cache-line aligned allocation which is mapped
+#include <memalign.h>
+#include <asm/io.h>
+
+/*
+ * dma_alloc_coherent() return cache-line aligned allocation which is mapped
  * to uncached io region.
- *
- * IO_REGION_BASE should be defined in board config header file
- *   0x80000000 for nommu, 0xe0000000 for mmu
  */
-
 static inline void *dma_alloc_coherent(size_t len, unsigned long *handle)
 {
-       void *addr = malloc(len + CONFIG_SYS_DCACHELINE_SIZE);
+       unsigned long addr = (unsigned long)malloc_cache_aligned(len);
+
        if (!addr)
-               return 0;
-       flush_dcache((unsigned long)addr, len + CONFIG_SYS_DCACHELINE_SIZE);
-       *handle = ((unsigned long)addr +
-                  (CONFIG_SYS_DCACHELINE_SIZE - 1)) &
-               ~(CONFIG_SYS_DCACHELINE_SIZE - 1) & ~(IO_REGION_BASE);
-       return (void *)(*handle | IO_REGION_BASE);
-}
+               return NULL;
+
+       invalidate_dcache_range(addr, addr + len);
+       if (handle)
+               *handle = addr;
 
+       return ioremap(addr, len);
+}
 #endif /* __ASM_NIOS2_DMA_MAPPING_H */