Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 */