blob: 6940a14f32a0abb58fa07f14b08fd72fbe21e3c7 (
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
|
/*
* include/asm-arm/arch-ixp23xx/memory.h
*
* Copyright (c) 2003-2004 Intel Corp.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#ifndef __ASM_ARCH_MEMORY_H
#define __ASM_ARCH_MEMORY_H
#include <asm/hardware.h>
/*
* Physical DRAM offset.
*/
#define PHYS_OFFSET (0x00000000)
/*
* Virtual view <-> DMA view memory address translations
* virt_to_bus: Used to translate the virtual address to an
* address suitable to be passed to set_dma_addr
* bus_to_virt: Used to convert an address for DMA operations
* to an address that the kernel can use.
*/
#ifndef __ASSEMBLY__
#define __virt_to_bus(v) \
({ unsigned int ret; \
ret = ((__virt_to_phys(v) - 0x00000000) + \
(*((volatile int *)IXP23XX_PCI_SDRAM_BAR) & 0xfffffff0)); \
ret; })
#define __bus_to_virt(b) \
({ unsigned int data; \
data = *((volatile int *)IXP23XX_PCI_SDRAM_BAR); \
__phys_to_virt((((b - (data & 0xfffffff0)) + 0x00000000))); })
#define arch_is_coherent() 1
#endif
#endif
|
