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authorLinus Torvalds <torvalds@linux-foundation.org>2009-04-13 08:17:52 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-13 08:17:52 -0700
commitcec5455e457928153f5a51668dad3d68176feab5 (patch)
treebf62da1e26096c4cf97e56f8678269112dc306a1 /arch/microblaze/include/asm/dma-mapping.h
parentb0cbc861a3c05e634520b049b5cc27ad6febb51f (diff)
parentc6375b0a8007fffe65109aeea032a9243df070e1 (diff)
Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze
* 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze: (60 commits) microblaze_v8: Add MAINTAINERS fragment microblaze_v8: Uartlite for Microblaze microblaze_v8: Makefiles for Microblaze cpu microblaze_v8: Kconfig patches microblaze_v8: Interrupt handling and timer support microblaze_v8: syscalls.h microblaze_v8: pci headers microblaze_v8: Kbuild file microblaze_v8: string.h thread_info.h microblaze_v8: unistd.h microblaze_v8: fcntl.h sockios.h ucontext.h microblaze_v8: pool.h socket.h microblaze_v8: device.h param.h topology.h microblaze_v8: headers files entry.h current.h mman.h registers.h sembuf.h microblaze_v8: namei.h microblaze_v8: gpio.h, serial.h microblaze_v8: headers simple files - empty or redirect to asm-generic microblaze_v8: sigcontext.h siginfo.h microblaze_v8: termbits.h termios.h microblaze_v8: stats headers ...
Diffstat (limited to 'arch/microblaze/include/asm/dma-mapping.h')
-rw-r--r--arch/microblaze/include/asm/dma-mapping.h129
1 files changed, 129 insertions, 0 deletions
diff --git a/arch/microblaze/include/asm/dma-mapping.h b/arch/microblaze/include/asm/dma-mapping.h
new file mode 100644
index 00000000000..17336252a9b
--- /dev/null
+++ b/arch/microblaze/include/asm/dma-mapping.h
@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2006 Atmark Techno, Inc.
+ *
+ * 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.
+ */
+
+#ifndef _ASM_MICROBLAZE_DMA_MAPPING_H
+#define _ASM_MICROBLAZE_DMA_MAPPING_H
+
+#include <asm/cacheflush.h>
+#include <linux/io.h>
+#include <linux/bug.h>
+
+struct scatterlist;
+
+#define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
+#define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
+
+/* FIXME */
+static inline int
+dma_supported(struct device *dev, u64 mask)
+{
+ return 1;
+}
+
+static inline dma_addr_t
+dma_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG();
+ return 0;
+}
+
+static inline void
+dma_unmap_page(struct device *dev, dma_addr_t dma_address, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG();
+}
+
+static inline int
+dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
+ enum dma_data_direction direction)
+{
+ BUG();
+ return 0;
+}
+
+static inline void
+dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nhwentries,
+ enum dma_data_direction direction)
+{
+ BUG();
+}
+
+static inline void
+dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG();
+}
+
+static inline void
+dma_sync_single_for_device(struct device *dev, dma_addr_t dma_handle,
+ size_t size, enum dma_data_direction direction)
+{
+ BUG();
+}
+
+static inline void
+dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nelems,
+ enum dma_data_direction direction)
+{
+ BUG();
+}
+
+static inline void
+dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nelems,
+ enum dma_data_direction direction)
+{
+ BUG();
+}
+
+static inline int dma_mapping_error(struct device *dev, dma_addr_t dma_addr)
+{
+ return 0;
+}
+
+static inline void *dma_alloc_coherent(struct device *dev, size_t size,
+ dma_addr_t *dma_handle, int flag)
+{
+ return NULL; /* consistent_alloc(flag, size, dma_handle); */
+}
+
+static inline void dma_free_coherent(struct device *dev, size_t size,
+ void *vaddr, dma_addr_t dma_handle)
+{
+ BUG();
+}
+
+static inline dma_addr_t
+dma_map_single(struct device *dev, void *ptr, size_t size,
+ enum dma_data_direction direction)
+{
+ BUG_ON(direction == DMA_NONE);
+
+ return virt_to_bus(ptr);
+}
+
+static inline void dma_unmap_single(struct device *dev, dma_addr_t dma_addr,
+ size_t size,
+ enum dma_data_direction direction)
+{
+ switch (direction) {
+ case DMA_FROM_DEVICE:
+ flush_dcache_range((unsigned)dma_addr,
+ (unsigned)dma_addr + size);
+ /* Fall through */
+ case DMA_TO_DEVICE:
+ break;
+ default:
+ BUG();
+ }
+}
+
+#endif /* _ASM_MICROBLAZE_DMA_MAPPING_H */