#include <linux/dma-attrs.h>
#include <asm/io.h>
#include <asm-generic/dma-coherent.h>
+#include <asm/cacheflush.h>
#define DMA_ERROR_CODE (~(dma_addr_t)0x0)
#define __dma_alloc_coherent(dev, gfp, size, handle) NULL
#define __dma_free_coherent(size, addr) ((void)0)
-#define __dma_sync(addr, size, rw) ((void)0)
static inline unsigned long device_to_mask(struct device *dev)
{
#include <asm-generic/dma-mapping-common.h>
+static inline void __dma_sync(unsigned long paddr,
+ size_t size, enum dma_data_direction direction)
+{
+ switch (direction) {
+ case DMA_TO_DEVICE:
+ case DMA_BIDIRECTIONAL:
+ flush_dcache_range(paddr, paddr + size);
+ break;
+ case DMA_FROM_DEVICE:
+ invalidate_dcache_range(paddr, paddr + size);
+ break;
+ default:
+ BUG();
+ }
+}
+
static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
{
struct dma_map_ops *ops = get_dma_ops(dev);
enum dma_data_direction direction)
{
BUG_ON(direction == DMA_NONE);
- __dma_sync(vaddr, size, (int)direction);
+ __dma_sync(virt_to_phys(vaddr), size, (int)direction);
}
#endif /* _ASM_MICROBLAZE_DMA_MAPPING_H */
#include <linux/gfp.h>
#include <linux/dma-debug.h>
#include <asm/bug.h>
-#include <asm/cacheflush.h>
/*
* Generic direct DMA implementation
* can set archdata.dma_data to an unsigned long holding the offset. By
* default the offset is PCI_DRAM_OFFSET.
*/
-static inline void __dma_sync_page(unsigned long paddr, unsigned long offset,
- size_t size, enum dma_data_direction direction)
-{
- switch (direction) {
- case DMA_TO_DEVICE:
- case DMA_BIDIRECTIONAL:
- flush_dcache_range(paddr + offset, paddr + offset + size);
- break;
- case DMA_FROM_DEVICE:
- invalidate_dcache_range(paddr + offset, paddr + offset + size);
- break;
- default:
- BUG();
- }
-}
static unsigned long get_dma_direct_offset(struct device *dev)
{
/* FIXME this part of code is untested */
for_each_sg(sgl, sg, nents, i) {
sg->dma_address = sg_phys(sg) + get_dma_direct_offset(dev);
- __dma_sync_page(page_to_phys(sg_page(sg)), sg->offset,
+ __dma_sync(page_to_phys(sg_page(sg)) + sg->offset,
sg->length, direction);
}
enum dma_data_direction direction,
struct dma_attrs *attrs)
{
- __dma_sync_page(page_to_phys(page), offset, size, direction);
+ __dma_sync(page_to_phys(page) + offset, size, direction);
return page_to_phys(page) + offset + get_dma_direct_offset(dev);
}
* phys_to_virt is here because in __dma_sync_page is __virt_to_phys and
* dma_address is physical address
*/
- __dma_sync_page(dma_address, 0 , size, direction);
+ __dma_sync(dma_address, size, direction);
}
struct dma_map_ops dma_direct_ops = {