blob: e101be98acf4b835fc28f2af132755fd5e687595 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
/*
* Copyright 2004-2009 Freescale Semiconductor, Inc. All Rights Reserved.
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __ASM_ARCH_MXC_MEMORY_H__
#define __ASM_ARCH_MXC_MEMORY_H__
#include <asm/page.h>
#include <asm/sizes.h>
/* Start of physical RAM */
#if defined(CONFIG_MACH_MX35EVB) || defined(CONFIG_ARCH_MX51)
#define PHYS_OFFSET UL(0x90000000)
#endif
#ifdef CONFIG_MACH_MX27ADS
#define PHYS_OFFSET UL(0xA0000000)
#endif
#ifdef CONFIG_MACH_MX37_3DS
#define PHYS_OFFSET UL(0x40000000)
#endif
#ifndef PHYS_OFFSET
#define PHYS_OFFSET UL(0x80000000)
#endif
/* Size of contiguous memory for DMA and other h/w blocks */
#ifdef CONFIG_ARCH_MX51
#define CONSISTENT_DMA_SIZE (64 * SZ_1M)
#else
#define CONSISTENT_DMA_SIZE (32 * SZ_1M)
#endif
#ifndef __ASSEMBLY__
#ifdef CONFIG_DMA_ZONE_SIZE
#define MXC_DMA_ZONE_SIZE ((CONFIG_DMA_ZONE_SIZE * SZ_1M) >> PAGE_SHIFT)
#else
#define MXC_DMA_ZONE_SIZE ((12 * SZ_1M) >> PAGE_SHIFT)
#endif
static inline void __arch_adjust_zones(int node, unsigned long *zone_size,
unsigned long *zhole_size)
{
if (node != 0)
return;
/* Create separate zone to reserve memory for DMA */
zone_size[1] = zone_size[0] - MXC_DMA_ZONE_SIZE;
zone_size[0] = MXC_DMA_ZONE_SIZE;
zhole_size[1] = zhole_size[0];
zhole_size[0] = 0;
}
#define arch_adjust_zones(node, size, holes) \
__arch_adjust_zones(node, size, holes)
#endif
/*
* Virtual view <-> DMA view memory address translations
* This macro is used to translate the virtual address to an address
* suitable to be passed to set_dma_addr()
*/
#define __virt_to_bus(a) __virt_to_phys(a)
/*
* Used to convert an address for DMA operations to an address that the
* kernel can use.
*/
#define __bus_to_virt(a) __phys_to_virt(a)
#endif /* __ASM_ARCH_MXC_MEMORY_H__ */
|
