- /*
- * 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, 1999 by Ralf Baechle
- * Copyright (C) 1990, 1999 by Silicon Graphics, Inc.
- */
- #ifndef _ASM_ADDRSPACE_H
- #define _ASM_ADDRSPACE_H
- #include <linux/config.h>
- /*
- * Memory segments (32bit kernel mode addresses)
- */
- #define KUSEG 0x0000000000000000
- #define KSEG0 0xffffffff80000000
- #define KSEG1 0xffffffffa0000000
- #define KSEG2 0xffffffffc0000000
- #define KSEG3 0xffffffffe0000000
- /*
- * Returns the kernel segment base of a given address
- */
- #define KSEGX(a) (((unsigned long)(a)) & 0xe0000000)
- /*
- * Returns the physical address of a KSEG0/KSEG1 address
- */
- #define CPHYSADDR(a) (((unsigned long)(a)) & 0x000000001fffffffUL)
- #define PHYSADDR(a) (((unsigned long)(a)) & 0x000000ffffffffffUL)
- /*
- * Map an address to a certain kernel segment
- */
- #define KSEG0ADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x000000ffffffffffUL) | KSEG0))
- #define KSEG1ADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x000000ffffffffffUL) | KSEG1))
- #define KSEG2ADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x000000ffffffffffUL) | KSEG2))
- #define KSEG3ADDR(a) ((__typeof__(a))(((unsigned long)(a) & 0x000000ffffffffffUL) | KSEG3))
- /*
- * 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
- #if defined (CONFIG_CPU_R4300)
- || defined (CONFIG_CPU_R4X00)
- || defined (CONFIG_CPU_R5000)
- || defined (CONFIG_CPU_NEVADA)
- #define KUSIZE 0x0000010000000000 /* 2^^40 */
- #define KUSIZE_64 0x0000010000000000 /* 2^^40 */
- #define K0SIZE 0x0000001000000000 /* 2^^36 */
- #define K1SIZE 0x0000001000000000 /* 2^^36 */
- #define K2SIZE 0x000000ff80000000
- #define KSEGSIZE 0x000000ff80000000 /* max syssegsz */
- #define TO_PHYS_MASK 0x0000000fffffffff /* 2^^36 - 1 */
- #endif
- #if defined (CONFIG_CPU_R8000)
- /* We keep KUSIZE consistent with R4000 for now (2^^40) instead of (2^^48) */
- #define KUSIZE 0x0000010000000000 /* 2^^40 */
- #define KUSIZE_64 0x0000010000000000 /* 2^^40 */
- #define K0SIZE 0x0000010000000000 /* 2^^40 */
- #define K1SIZE 0x0000010000000000 /* 2^^40 */
- #define K2SIZE 0x0001000000000000
- #define KSEGSIZE 0x0000010000000000 /* max syssegsz */
- #define TO_PHYS_MASK 0x000000ffffffffff /* 2^^40 - 1 */
- #endif
- #if defined (CONFIG_CPU_R10000)
- #define KUSIZE 0x0000010000000000 /* 2^^40 */
- #define KUSIZE_64 0x0000010000000000 /* 2^^40 */
- #define K0SIZE 0x0000010000000000 /* 2^^40 */
- #define K1SIZE 0x0000010000000000 /* 2^^40 */
- #define K2SIZE 0x00000fff80000000
- #define KSEGSIZE 0x00000fff80000000 /* max syssegsz */
- #define TO_PHYS_MASK 0x000000ffffffffff /* 2^^40 - 1 */
- #endif
- /*
- * Further names for SGI source compatibility. These are stolen from
- * IRIX's <sys/mips_addrspace.h>.
- */
- #define KUBASE 0
- #define KUSIZE_32 0x0000000080000000 /* KUSIZE for a 32 bit proc */
- #define K0BASE 0xa800000000000000
- #define K0BASE_EXL_WR K0BASE /* exclusive on write */
- #define K0BASE_NONCOH 0x9800000000000000 /* noncoherent */
- #define K0BASE_EXL 0xa000000000000000 /* exclusive */
- #ifdef CONFIG_SGI_IP27
- #define K1BASE 0x9600000000000000 /* Uncached attr 3, uncac */
- #else
- #define K1BASE 0x9000000000000000
- #endif
- #define K2BASE 0xc000000000000000
- #if !defined (CONFIG_CPU_R8000)
- #define COMPAT_K1BASE32 0xffffffffa0000000
- #define PHYS_TO_COMPATK1(x) ((x) | COMPAT_K1BASE32) /* 32-bit compat k1 */
- #endif
- #define KDM_TO_PHYS(x) ((unsigned long)(x) & TO_PHYS_MASK)
- #define PHYS_TO_K0(x) ((unsigned long)(x) | K0BASE)
- #endif /* _ASM_ADDRSPACE_H */