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 #ifndef __ASM_MACH_JAZZ_DMA_COHERENCE_H
9 #define __ASM_MACH_JAZZ_DMA_COHERENCE_H
10
11 #include <asm/jazzdma.h>
12
13 struct device;
14
plat_map_dma_mem(struct device * dev,void * addr,size_t size)15 static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, size_t size)
16 {
17 return vdma_alloc(virt_to_phys(addr), size);
18 }
19
plat_map_dma_mem_page(struct device * dev,struct page * page)20 static inline dma_addr_t plat_map_dma_mem_page(struct device *dev,
21 struct page *page)
22 {
23 return vdma_alloc(page_to_phys(page), PAGE_SIZE);
24 }
25
plat_dma_addr_to_phys(struct device * dev,dma_addr_t dma_addr)26 static inline unsigned long plat_dma_addr_to_phys(struct device *dev,
27 dma_addr_t dma_addr)
28 {
29 return vdma_log2phys(dma_addr);
30 }
31
plat_unmap_dma_mem(struct device * dev,dma_addr_t dma_addr,size_t size,enum dma_data_direction direction)32 static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr,
33 size_t size, enum dma_data_direction direction)
34 {
35 vdma_free(dma_addr);
36 }
37
plat_dma_supported(struct device * dev,u64 mask)38 static inline int plat_dma_supported(struct device *dev, u64 mask)
39 {
40 /*
41 * we fall back to GFP_DMA when the mask isn't all 1s,
42 * so we can't guarantee allocations that must be
43 * within a tighter range than GFP_DMA..
44 */
45 if (mask < DMA_BIT_MASK(24))
46 return 0;
47
48 return 1;
49 }
50
plat_extra_sync_for_device(struct device * dev)51 static inline void plat_extra_sync_for_device(struct device *dev)
52 {
53 }
54
plat_dma_mapping_error(struct device * dev,dma_addr_t dma_addr)55 static inline int plat_dma_mapping_error(struct device *dev,
56 dma_addr_t dma_addr)
57 {
58 return 0;
59 }
60
plat_device_is_coherent(struct device * dev)61 static inline int plat_device_is_coherent(struct device *dev)
62 {
63 return 0;
64 }
65
66 #endif /* __ASM_MACH_JAZZ_DMA_COHERENCE_H */
67