File: /usr/src/linux/include/asm-mips/addrspace.h

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) 1996 by Ralf Baechle
7      * Copyright (C) 2000 by Maciej W. Rozycki
8      *
9      * Defitions for the address spaces of the MIPS CPUs.
10      */
11     #ifndef __ASM_MIPS_ADDRSPACE_H
12     #define __ASM_MIPS_ADDRSPACE_H
13     
14     /*
15      * Memory segments (32bit kernel mode addresses)
16      */
17     #define KUSEG                   0x00000000
18     #define KSEG0                   0x80000000
19     #define KSEG1                   0xa0000000
20     #define KSEG2                   0xc0000000
21     #define KSEG3                   0xe0000000
22     
23     #define K0BASE  KSEG0
24     
25     /*
26      * Returns the kernel segment base of a given address
27      */
28     #ifndef __ASSEMBLY__
29     #define KSEGX(a)                (((unsigned long)(a)) & 0xe0000000)
30     #else
31     #define KSEGX(a)                ((a) & 0xe0000000)
32     #endif
33     
34     /*
35      * Returns the physical address of a KSEG0/KSEG1 address
36      */
37     #ifndef __ASSEMBLY__
38     #define PHYSADDR(a)		(((unsigned long)(a)) & 0x1fffffff)
39     #else
40     #define PHYSADDR(a)		((a) & 0x1fffffff)
41     #endif
42     
43     /*
44      * Map an address to a certain kernel segment
45      */
46     #ifndef __ASSEMBLY__
47     #define KSEG0ADDR(a)		((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG0))
48     #define KSEG1ADDR(a)		((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG1))
49     #define KSEG2ADDR(a)		((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG2))
50     #define KSEG3ADDR(a)		((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG3))
51     #else
52     #define KSEG0ADDR(a)		(((a) & 0x1fffffff) | KSEG0)
53     #define KSEG1ADDR(a)		(((a) & 0x1fffffff) | KSEG1)
54     #define KSEG2ADDR(a)		(((a) & 0x1fffffff) | KSEG2)
55     #define KSEG3ADDR(a)		(((a) & 0x1fffffff) | KSEG3)
56     #endif
57     
58     /*
59      * Memory segments (64bit kernel mode addresses)
60      */
61     #define XKUSEG                  0x0000000000000000
62     #define XKSSEG                  0x4000000000000000
63     #define XKPHYS                  0x8000000000000000
64     #define XKSEG                   0xc000000000000000
65     #define CKSEG0                  0xffffffff80000000
66     #define CKSEG1                  0xffffffffa0000000
67     #define CKSSEG                  0xffffffffc0000000
68     #define CKSEG3                  0xffffffffe0000000
69     
70     #endif /* __ASM_MIPS_ADDRSPACE_H */
71