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Diffstat (limited to 'arch/ia64/include/asm/dma-mapping.h')
-rw-r--r--arch/ia64/include/asm/dma-mapping.h97
1 files changed, 97 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/dma-mapping.h b/arch/ia64/include/asm/dma-mapping.h
new file mode 100644
index 000000000000..9f0df9bd46b7
--- /dev/null
+++ b/arch/ia64/include/asm/dma-mapping.h
@@ -0,0 +1,97 @@
+#ifndef _ASM_IA64_DMA_MAPPING_H
+#define _ASM_IA64_DMA_MAPPING_H
+
+/*
+ * Copyright (C) 2003-2004 Hewlett-Packard Co
+ * David Mosberger-Tang <davidm@hpl.hp.com>
+ */
+#include <asm/machvec.h>
+#include <linux/scatterlist.h>
+
+#define dma_alloc_coherent platform_dma_alloc_coherent
+/* coherent mem. is cheap */
+static inline void *
+dma_alloc_noncoherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
+ gfp_t flag)
+{
+ return dma_alloc_coherent(dev, size, dma_handle, flag);
+}
+#define dma_free_coherent platform_dma_free_coherent
+static inline void
+dma_free_noncoherent(struct device *dev, size_t size, void *cpu_addr,
+ dma_addr_t dma_handle)
+{
+ dma_free_coherent(dev, size, cpu_addr, dma_handle);
+}
+#define dma_map_single_attrs platform_dma_map_single_attrs
+static inline dma_addr_t dma_map_single(struct device *dev, void *cpu_addr,
+ size_t size, int dir)
+{
+ return dma_map_single_attrs(dev, cpu_addr, size, dir, NULL);
+}
+#define dma_map_sg_attrs platform_dma_map_sg_attrs
+static inline int dma_map_sg(struct device *dev, struct scatterlist *sgl,
+ int nents, int dir)
+{
+ return dma_map_sg_attrs(dev, sgl, nents, dir, NULL);
+}
+#define dma_unmap_single_attrs platform_dma_unmap_single_attrs
+static inline void dma_unmap_single(struct device *dev, dma_addr_t cpu_addr,
+ size_t size, int dir)
+{
+ return dma_unmap_single_attrs(dev, cpu_addr, size, dir, NULL);
+}
+#define dma_unmap_sg_attrs platform_dma_unmap_sg_attrs
+static inline void dma_unmap_sg(struct device *dev, struct scatterlist *sgl,
+ int nents, int dir)
+{
+ return dma_unmap_sg_attrs(dev, sgl, nents, dir, NULL);
+}
+#define dma_sync_single_for_cpu platform_dma_sync_single_for_cpu
+#define dma_sync_sg_for_cpu platform_dma_sync_sg_for_cpu
+#define dma_sync_single_for_device platform_dma_sync_single_for_device
+#define dma_sync_sg_for_device platform_dma_sync_sg_for_device
+#define dma_mapping_error platform_dma_mapping_error
+
+#define dma_map_page(dev, pg, off, size, dir) \
+ dma_map_single(dev, page_address(pg) + (off), (size), (dir))
+#define dma_unmap_page(dev, dma_addr, size, dir) \
+ dma_unmap_single(dev, dma_addr, size, dir)
+
+/*
+ * Rest of this file is part of the "Advanced DMA API". Use at your own risk.
+ * See Documentation/DMA-API.txt for details.
+ */
+
+#define dma_sync_single_range_for_cpu(dev, dma_handle, offset, size, dir) \
+ dma_sync_single_for_cpu(dev, dma_handle, size, dir)
+#define dma_sync_single_range_for_device(dev, dma_handle, offset, size, dir) \
+ dma_sync_single_for_device(dev, dma_handle, size, dir)
+
+#define dma_supported platform_dma_supported
+
+static inline int
+dma_set_mask (struct device *dev, u64 mask)
+{
+ if (!dev->dma_mask || !dma_supported(dev, mask))
+ return -EIO;
+ *dev->dma_mask = mask;
+ return 0;
+}
+
+extern int dma_get_cache_alignment(void);
+
+static inline void
+dma_cache_sync (struct device *dev, void *vaddr, size_t size,
+ enum dma_data_direction dir)
+{
+ /*
+ * IA-64 is cache-coherent, so this is mostly a no-op. However, we do need to
+ * ensure that dma_cache_sync() enforces order, hence the mb().
+ */
+ mb();
+}
+
+#define dma_is_consistent(d, h) (1) /* all we do is coherent memory... */
+
+#endif /* _ASM_IA64_DMA_MAPPING_H */