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1da177e4 LT |
1 | /* $Id$ */ |
2 | /* | |
3 | * This file is subject to the terms and conditions of the GNU General Public | |
4 | * License. See the file "COPYING" in the main directory of this archive | |
5 | * for more details. | |
6 | * | |
7 | * Copyright (C) 2001 by Hiroyuki Kondo | |
8 | * | |
9 | * Defitions for the address spaces of the M32R CPUs. | |
10 | */ | |
11 | #ifndef __ASM_M32R_ADDRSPACE_H | |
12 | #define __ASM_M32R_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 | #endif /* __ASM_M32R_ADDRSPACE_H */ |