blob: 81782c122da451b16fa2b650f8fbfc99d68ac3a2 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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) 2001 by Hiroyuki Kondo
7 *
8 * Defitions for the address spaces of the M32R CPUs.
9 */
10#ifndef __ASM_M32R_ADDRSPACE_H
11#define __ASM_M32R_ADDRSPACE_H
12
13/*
14 * Memory segments (32bit kernel mode addresses)
15 */
16#define KUSEG 0x00000000
17#define KSEG0 0x80000000
18#define KSEG1 0xa0000000
19#define KSEG2 0xc0000000
20#define KSEG3 0xe0000000
21
22#define K0BASE KSEG0
23
24/*
25 * Returns the kernel segment base of a given address
26 */
27#ifndef __ASSEMBLY__
28#define KSEGX(a) (((unsigned long)(a)) & 0xe0000000)
29#else
30#define KSEGX(a) ((a) & 0xe0000000)
31#endif
32
33/*
34 * Returns the physical address of a KSEG0/KSEG1 address
35 */
36#ifndef __ASSEMBLY__
37#define PHYSADDR(a) (((unsigned long)(a)) & 0x1fffffff)
38#else
39#define PHYSADDR(a) ((a) & 0x1fffffff)
40#endif
41
42/*
43 * Map an address to a certain kernel segment
44 */
45#ifndef __ASSEMBLY__
46#define KSEG0ADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG0))
47#define KSEG1ADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG1))
48#define KSEG2ADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG2))
49#define KSEG3ADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG3))
50#else
51#define KSEG0ADDR(a) (((a) & 0x1fffffff) | KSEG0)
52#define KSEG1ADDR(a) (((a) & 0x1fffffff) | KSEG1)
53#define KSEG2ADDR(a) (((a) & 0x1fffffff) | KSEG2)
54#define KSEG3ADDR(a) (((a) & 0x1fffffff) | KSEG3)
55#endif
56
57#endif /* __ASM_M32R_ADDRSPACE_H */