MIPS: Loongson: Change naming methods

[cascardo/linux.git] / arch / mips / include / asm / mach-loongson / dma-coherence.h

diff --git a/arch/mips/include/asm/mach-loongson/dma-coherence.h b/arch/mips/include/asm/mach-loongson/dma-coherence.h
new file mode 100644 (file)
index 0000000..71a6851
--- /dev/null
+++ b/arch/mips/include/asm/mach-loongson/dma-coherence.h
@@ -0,0 +1,68 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2006, 07  Ralf Baechle <ralf@linux-mips.org>
+ * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
+ * Author: Fuxin Zhang, zhangfx@lemote.com
+ *
+ */
+#ifndef __ASM_MACH_LOONGSON_DMA_COHERENCE_H
+#define __ASM_MACH_LOONGSON_DMA_COHERENCE_H
+
+struct device;
+
+static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr,
+                                         size_t size)
+{
+       return virt_to_phys(addr) | 0x80000000;
+}
+
+static inline dma_addr_t plat_map_dma_mem_page(struct device *dev,
+                                              struct page *page)
+{
+       return page_to_phys(page) | 0x80000000;
+}
+
+static inline unsigned long plat_dma_addr_to_phys(struct device *dev,
+       dma_addr_t dma_addr)
+{
+       return dma_addr & 0x7fffffff;
+}
+
+static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr,
+       size_t size, enum dma_data_direction direction)
+{
+}
+
+static inline int plat_dma_supported(struct device *dev, u64 mask)
+{
+       /*
+        * we fall back to GFP_DMA when the mask isn't all 1s,
+        * so we can't guarantee allocations that must be
+        * within a tighter range than GFP_DMA..
+        */
+       if (mask < DMA_BIT_MASK(24))
+               return 0;
+
+       return 1;
+}
+
+static inline void plat_extra_sync_for_device(struct device *dev)
+{
+       return;
+}
+
+static inline int plat_dma_mapping_error(struct device *dev,
+                                        dma_addr_t dma_addr)
+{
+       return 0;
+}
+
+static inline int plat_device_is_coherent(struct device *dev)
+{
+       return 0;
+}
+
+#endif /* __ASM_MACH_LOONGSON_DMA_COHERENCE_H */