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Diffstat (limited to 'include/asm-mips/addrspace.h')
| -rw-r--r-- | include/asm-mips/addrspace.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/include/asm-mips/addrspace.h b/include/asm-mips/addrspace.h new file mode 100644 index 0000000..0d1bf32 --- /dev/null +++ b/include/asm-mips/addrspace.h @@ -0,0 +1,70 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 1996 by Ralf Baechle + * Copyright (C) 2000 by Maciej W. Rozycki + * + * Defitions for the address spaces of the MIPS CPUs. + */ +#ifndef __ASM_MIPS_ADDRSPACE_H +#define __ASM_MIPS_ADDRSPACE_H + +/* + * Memory segments (32bit kernel mode addresses) + */ +#define KUSEG 0x00000000 +#define KSEG0 0x80000000 +#define KSEG1 0xa0000000 +#define KSEG2 0xc0000000 +#define KSEG3 0xe0000000 + +#define K0BASE KSEG0 + +/* + * Returns the kernel segment base of a given address + */ +#ifndef __ASSEMBLY__ +#define KSEGX(a) (((unsigned long)(a)) & 0xe0000000) +#else +#define KSEGX(a) ((a) & 0xe0000000) +#endif + +/* + * Returns the physical address of a KSEG0/KSEG1 address + */ +#ifndef __ASSEMBLY__ +#define PHYSADDR(a) (((unsigned long)(a)) & 0x1fffffff) +#else +#define PHYSADDR(a) ((a) & 0x1fffffff) +#endif + +/* + * Map an address to a certain kernel segment + */ +#ifndef __ASSEMBLY__ +#define KSEG0ADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG0)) +#define KSEG1ADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG1)) +#define KSEG2ADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG2)) +#define KSEG3ADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x1fffffff) | KSEG3)) +#else +#define KSEG0ADDR(a) (((a) & 0x1fffffff) | KSEG0) +#define KSEG1ADDR(a) (((a) & 0x1fffffff) | KSEG1) +#define KSEG2ADDR(a) (((a) & 0x1fffffff) | KSEG2) +#define KSEG3ADDR(a) (((a) & 0x1fffffff) | KSEG3) +#endif + +/* + * Memory segments (64bit kernel mode addresses) + */ +#define XKUSEG 0x0000000000000000 +#define XKSSEG 0x4000000000000000 +#define XKPHYS 0x8000000000000000 +#define XKSEG 0xc000000000000000 +#define CKSEG0 0xffffffff80000000 +#define CKSEG1 0xffffffffa0000000 +#define CKSSEG 0xffffffffc0000000 +#define CKSEG3 0xffffffffe0000000 + +#endif /* __ASM_MIPS_ADDRSPACE_H */ |