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/* $Id: addrspace.h,v 1.5 2000/02/01 00:32:01 kanoj Exp $
*
* 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 */
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