diff options
Diffstat (limited to 'arch/arm/mach-davinci/include/mach/memory.h')
-rw-r--r-- | arch/arm/mach-davinci/include/mach/memory.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/include/mach/memory.h b/arch/arm/mach-davinci/include/mach/memory.h new file mode 100644 index 00000000000..dd1625c23cf --- /dev/null +++ b/arch/arm/mach-davinci/include/mach/memory.h | |||
@@ -0,0 +1,64 @@ | |||
1 | /* | ||
2 | * DaVinci memory space definitions | ||
3 | * | ||
4 | * Author: Kevin Hilman, MontaVista Software, Inc. <source@mvista.com> | ||
5 | * | ||
6 | * 2007 (c) MontaVista Software, Inc. This file is licensed under | ||
7 | * the terms of the GNU General Public License version 2. This program | ||
8 | * is licensed "as is" without any warranty of any kind, whether express | ||
9 | * or implied. | ||
10 | */ | ||
11 | #ifndef __ASM_ARCH_MEMORY_H | ||
12 | #define __ASM_ARCH_MEMORY_H | ||
13 | |||
14 | /************************************************************************** | ||
15 | * Included Files | ||
16 | **************************************************************************/ | ||
17 | #include <asm/page.h> | ||
18 | #include <asm/sizes.h> | ||
19 | |||
20 | /************************************************************************** | ||
21 | * Definitions | ||
22 | **************************************************************************/ | ||
23 | #define DAVINCI_DDR_BASE 0x80000000 | ||
24 | #define DAVINCI_IRAM_BASE 0x00008000 /* ARM Internal RAM */ | ||
25 | |||
26 | #define PHYS_OFFSET DAVINCI_DDR_BASE | ||
27 | |||
28 | /* | ||
29 | * Increase size of DMA-consistent memory region | ||
30 | */ | ||
31 | #define CONSISTENT_DMA_SIZE (14<<20) | ||
32 | |||
33 | #ifndef __ASSEMBLY__ | ||
34 | /* | ||
35 | * Restrict DMA-able region to workaround silicon bug. The bug | ||
36 | * restricts buffers available for DMA to video hardware to be | ||
37 | * below 128M | ||
38 | */ | ||
39 | static inline void | ||
40 | __arch_adjust_zones(int node, unsigned long *size, unsigned long *holes) | ||
41 | { | ||
42 | unsigned int sz = (128<<20) >> PAGE_SHIFT; | ||
43 | |||
44 | if (node != 0) | ||
45 | sz = 0; | ||
46 | |||
47 | size[1] = size[0] - sz; | ||
48 | size[0] = sz; | ||
49 | } | ||
50 | |||
51 | #define arch_adjust_zones(node, zone_size, holes) \ | ||
52 | if ((meminfo.bank[0].size >> 20) > 128) __arch_adjust_zones(node, zone_size, holes) | ||
53 | |||
54 | #define ISA_DMA_THRESHOLD (PHYS_OFFSET + (128<<20) - 1) | ||
55 | |||
56 | #endif | ||
57 | |||
58 | /* | ||
59 | * Bus address is physical address | ||
60 | */ | ||
61 | #define __virt_to_bus(x) __virt_to_phys(x) | ||
62 | #define __bus_to_virt(x) __phys_to_virt(x) | ||
63 | |||
64 | #endif /* __ASM_ARCH_MEMORY_H */ | ||