File: /usr/src/linux/include/asm-arm/arch-nexuspci/memory.h

1     /*
2      * linux/include/asm-arm/arch-nexuspci/memory.h
3      *
4      * Copyright (c) 1997, 1998, 2000 FutureTV Labs Ltd.
5      * Copyright (c) 1999 Russell King
6      *
7      */
8     #ifndef __ASM_ARCH_MMU_H
9     #define __ASM_ARCH_MMU_H
10     
11     /*
12      * Task size: 3GB
13      */
14     #define TASK_SIZE	(0xc0000000UL)
15     #define TASK_SIZE_26	(0x04000000UL)
16     
17     /*
18      * This decides where the kernel will search for a free chunk of vm
19      * space during mmap's.
20      */
21     #define TASK_UNMAPPED_BASE (TASK_SIZE / 3)
22     
23     /*
24      * Page offset: 3GB
25      */
26     #define PAGE_OFFSET	(0xc0000000UL)
27     #define PHYS_OFFSET	(0x40000000UL)
28     #define BUS_OFFSET	(0xe0000000UL)
29     
30     /*
31      * DRAM is contiguous
32      */
33     #define __virt_to_phys(vpage) ((unsigned long)(vpage) - PAGE_OFFSET + PHYS_OFFSET)
34     #define __phys_to_virt(ppage) ((unsigned long)(ppage) + PAGE_OFFSET - PHYS_OFFSET)
35     #define __virt_to_phys__is_a_macro
36     #define __phys_to_virt__is_a_macro
37     
38     /*
39      * On the PCI bus the DRAM appears at address 0xe0000000
40      */
41     #define __virt_to_bus__is_a_macro
42     #define __virt_to_bus(x) ((unsigned long)(x) - PAGE_OFFSET + BUS_OFFSET)
43     #define __bus_to_virt__is_a_macro
44     #define __bus_to_virt(x) ((unsigned long)(x) + PAGE_OFFSET - BUS_OFFSET)
45     
46     #define PHYS_TO_NID(addr)	(0)
47     
48     #endif
49