diff options
Diffstat (limited to 'include/asm-mips/mach-ip32/dma-coherence.h')
-rw-r--r-- | include/asm-mips/mach-ip32/dma-coherence.h | 72 |
1 files changed, 0 insertions, 72 deletions
diff --git a/include/asm-mips/mach-ip32/dma-coherence.h b/include/asm-mips/mach-ip32/dma-coherence.h deleted file mode 100644 index a5511ebb2d53..000000000000 --- a/include/asm-mips/mach-ip32/dma-coherence.h +++ /dev/null | |||
@@ -1,72 +0,0 @@ | |||
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_IP32_DMA_COHERENCE_H | ||
10 | #define __ASM_MACH_IP32_DMA_COHERENCE_H | ||
11 | |||
12 | #include <asm/ip32/crime.h> | ||
13 | |||
14 | struct device; | ||
15 | |||
16 | /* | ||
17 | * Few notes. | ||
18 | * 1. CPU sees memory as two chunks: 0-256M@0x0, and the rest @0x40000000+256M | ||
19 | * 2. PCI sees memory as one big chunk @0x0 (or we could use 0x40000000 for | ||
20 | * native-endian) | ||
21 | * 3. All other devices see memory as one big chunk at 0x40000000 | ||
22 | * 4. Non-PCI devices will pass NULL as struct device* | ||
23 | * | ||
24 | * Thus we translate differently, depending on device. | ||
25 | */ | ||
26 | |||
27 | #define RAM_OFFSET_MASK 0x3fffffffUL | ||
28 | |||
29 | static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, | ||
30 | size_t size) | ||
31 | { | ||
32 | dma_addr_t pa = virt_to_phys(addr) & RAM_OFFSET_MASK; | ||
33 | |||
34 | if (dev == NULL) | ||
35 | pa += CRIME_HI_MEM_BASE; | ||
36 | |||
37 | return pa; | ||
38 | } | ||
39 | |||
40 | static dma_addr_t plat_map_dma_mem_page(struct device *dev, struct page *page) | ||
41 | { | ||
42 | dma_addr_t pa; | ||
43 | |||
44 | pa = page_to_phys(page) & RAM_OFFSET_MASK; | ||
45 | |||
46 | if (dev == NULL) | ||
47 | pa += CRIME_HI_MEM_BASE; | ||
48 | |||
49 | return pa; | ||
50 | } | ||
51 | |||
52 | /* This is almost certainly wrong but it's what dma-ip32.c used to use */ | ||
53 | static unsigned long plat_dma_addr_to_phys(dma_addr_t dma_addr) | ||
54 | { | ||
55 | unsigned long addr = dma_addr & RAM_OFFSET_MASK; | ||
56 | |||
57 | if (dma_addr >= 256*1024*1024) | ||
58 | addr += CRIME_HI_MEM_BASE; | ||
59 | |||
60 | return addr; | ||
61 | } | ||
62 | |||
63 | static inline void plat_unmap_dma_mem(dma_addr_t dma_addr) | ||
64 | { | ||
65 | } | ||
66 | |||
67 | static inline int plat_device_is_coherent(struct device *dev) | ||
68 | { | ||
69 | return 0; /* IP32 is non-cohernet */ | ||
70 | } | ||
71 | |||
72 | #endif /* __ASM_MACH_IP32_DMA_COHERENCE_H */ | ||