Loongson3 is dma coherent and uses swiotlb, so it will never used any
of these helpers.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
.../include/asm/mach-loongson64/dma-coherence.h | 16 +---------------
1 file changed, 1 insertion(+), 15 deletions(-)
diff --git a/arch/mips/include/asm/mach-loongson64/dma-coherence.h b/arch/mips/include/asm/mach-loongson64/dma-coherence.h
index b8825a7d1279..651dd2eb3ee5 100644
--- a/arch/mips/include/asm/mach-loongson64/dma-coherence.h
+++ b/arch/mips/include/asm/mach-loongson64/dma-coherence.h
@@ -20,29 +20,19 @@ struct device;
static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr,
size_t size)
{
-#ifdef CONFIG_CPU_LOONGSON3
- return __phys_to_dma(dev, virt_to_phys(addr));
-#else
return virt_to_phys(addr) | 0x80000000;
-#endif
}
static inline dma_addr_t plat_map_dma_mem_page(struct device *dev,
struct page *page)
{
-#ifdef CONFIG_CPU_LOONGSON3
- return __phys_to_dma(dev, page_to_phys(page));
-#else
return page_to_phys(page) | 0x80000000;
-#endif
}
static inline unsigned long plat_dma_addr_to_phys(struct device *dev,
dma_addr_t dma_addr)
{
-#if defined(CONFIG_CPU_LOONGSON3) && defined(CONFIG_64BIT)
- return __dma_to_phys(dev, dma_addr);
-#elif defined(CONFIG_CPU_LOONGSON2F) && defined(CONFIG_64BIT)
+#if defined(CONFIG_CPU_LOONGSON2F) && defined(CONFIG_64BIT)
return (dma_addr > 0x8fffffff) ? dma_addr : (dma_addr & 0x0fffffff);
#else
return dma_addr & 0x7fffffff;
@@ -69,11 +59,7 @@ static inline int plat_dma_supported(struct device *dev, u64 mask)
static inline int plat_device_is_coherent(struct device *dev)
{
-#ifdef CONFIG_DMA_NONCOHERENT
return 0;
-#else
- return 1;
-#endif /* CONFIG_DMA_NONCOHERENT */
}
static inline void plat_post_dma_flush(struct device *dev)
--
2.17.0
