added support for disabling atheros reset button to k7.09
[openwrt/svn-archive/archive.git] / target / linux / atheros-2.6 / files / include / asm-mips / mach-atheros / dma-coherence.h
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 * Copyright (C) 2007 Felix Fietkau <nbd@openwrt.org>
8 *
9 */
10 #ifndef __ASM_MACH_GENERIC_DMA_COHERENCE_H
11 #define __ASM_MACH_GENERIC_DMA_COHERENCE_H
12
13 #if 0
14 #define PCI_DMA_OFFSET 0x20000000
15 #else
16 #define PCI_DMA_OFFSET 0x00000000
17 #endif
18
19 struct device;
20
21 static dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size)
22 {
23 return virt_to_phys(addr) + (dev != NULL ? PCI_DMA_OFFSET : 0);
24 }
25
26 static dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page)
27 {
28 return page_to_phys(page) + (dev != NULL ? PCI_DMA_OFFSET : 0);
29 }
30
31 static unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr)
32 {
33 return (dma_addr > PCI_DMA_OFFSET ? dma_addr - PCI_DMA_OFFSET : dma_addr);
34 }
35
36 static void plat_unmap_dma_mem(dma_addr_t dma_addr)
37 {
38 }
39
40 static inline int plat_device_is_coherent(struct device *dev)
41 {
42 return 0;
43 }
44
45 #endif /* __ASM_MACH_GENERIC_DMA_COHERENCE_H */