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authorRalf Baechle <ralf@linux-mips.org>2006-11-15 21:56:12 -0500
committerRalf Baechle <ralf@linux-mips.org>2007-02-13 17:40:50 -0500
commit9a88cbb5227970757881b1a65be01dea61fe2584 (patch)
tree2a1e6934ae253e75141efd383ae9df7042452d7c /include/asm-mips/mach-generic/dma-coherence.h
parentf65e4fa8e0c6022ad58dc88d1b11b12589ed7f9f (diff)
[MIPS] Unify dma-{coherent,noncoherent.ip27,ip32}
Platforms will now have to supply a function dma_device_is_coherent which returns if a particular device participates in the coherence domain. For most platforms this function will always return 0 or 1. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'include/asm-mips/mach-generic/dma-coherence.h')
-rw-r--r--include/asm-mips/mach-generic/dma-coherence.h43
1 files changed, 43 insertions, 0 deletions
diff --git a/include/asm-mips/mach-generic/dma-coherence.h b/include/asm-mips/mach-generic/dma-coherence.h
new file mode 100644
index 000000000000..df71822fd27b
--- /dev/null
+++ b/include/asm-mips/mach-generic/dma-coherence.h
@@ -0,0 +1,43 @@
1/*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
5 *
6 * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org>
7 *
8 */
9#ifndef __ASM_MACH_GENERIC_DMA_COHERENCE_H
10#define __ASM_MACH_GENERIC_DMA_COHERENCE_H
11
12struct device;
13
14static dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size)
15{
16 return virt_to_phys(addr);
17}
18
19static dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page)
20{
21 return page_to_phys(page);
22}
23
24static unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr)
25{
26 return dma_addr;
27}
28
29static void plat_unmap_dma_mem(dma_addr_t dma_addr)
30{
31}
32
33static inline int plat_device_is_coherent(struct device *dev)
34{
35#ifdef CONFIG_DMA_COHERENT
36 return 1;
37#endif
38#ifdef CONFIG_DMA_NONCOHERENT
39 return 0;
40#endif
41}
42
43#endif /* __ASM_MACH_GENERIC_DMA_COHERENCE_H */