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/*
* 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, 99 Ralf Baechle
* Copyright (C) 2000, 2002 Maciej W. Rozycki
* Copyright (C) 1990, 1999 by Silicon Graphics, Inc.
*/
#ifndef _ASM_ADDRSPACE_H
#define _ASM_ADDRSPACE_H
#include <linux/config.h>
#include <spaces.h>
/*
* Configure language
*/
#ifdef __ASSEMBLY__
#define _ATYPE_
#define _ATYPE32_
#define _ATYPE64_
#else
#define _ATYPE_ __PTRDIFF_TYPE__
#define _ATYPE32_ int
#define _ATYPE64_ long long
#endif
/*
* 32-bit MIPS address spaces
*/
#ifdef __ASSEMBLY__
#define _ACAST32_
#define _ACAST64_
#else
#define _ACAST32_ (_ATYPE_)(_ATYPE32_) /* widen if necessary */
#define _ACAST64_ (_ATYPE64_) /* do _not_ narrow */
#endif
/*
* Returns the kernel segment base of a given address
*/
#define KSEGX(a) ((_ACAST32_ (a)) & 0xe0000000)
/*
* Returns the physical address of a CKSEGx / XKPHYS address
*/
#define CPHYSADDR(a) ((_ACAST32_ (a)) & 0x1fffffff)
#define XPHYSADDR(a) ((_ACAST64_ (a)) & 0x000000ffffffffff)
#ifdef CONFIG_64BIT
/*
* Memory segments (64bit kernel mode addresses)
* The compatibility segments use the full 64-bit sign extended value. Note
* the R8000 doesn't have them so don't reference these in generic MIPS code.
*/
#define XKUSEG 0x0000000000000000
#define XKSSEG 0x4000000000000000
#define XKPHYS 0x8000000000000000
#define XKSEG 0xc000000000000000
#define CKSEG0 0xffffffff80000000
#define CKSEG1 0xffffffffa0000000
#define CKSSEG 0xffffffffc0000000
#define CKSEG3 0xffffffffe0000000
#define CKSEG0ADDR(a) (CPHYSADDR(a) | CKSEG0)
#define CKSEG1ADDR(a) (CPHYSADDR(a) | CKSEG1)
#define CKSEG2ADDR(a) (CPHYSADDR(a) | CKSEG2)
#define CKSEG3ADDR(a) (CPHYSADDR(a) | CKSEG3)
#else
#define CKSEG0ADDR(a) (CPHYSADDR(a) | KSEG0)
#define CKSEG1ADDR(a) (CPHYSADDR(a) | KSEG1)
#define CKSEG2ADDR(a) (CPHYSADDR(a) | KSEG2)
#define CKSEG3ADDR(a) (CPHYSADDR(a) | KSEG3)
/*
* Map an address to a certain kernel segment
*/
#define KSEG0ADDR(a) (CPHYSADDR(a) | KSEG0)
#define KSEG1ADDR(a) (CPHYSADDR(a) | KSEG1)
#define KSEG2ADDR(a) (CPHYSADDR(a) | KSEG2)
#define KSEG3ADDR(a) (CPHYSADDR(a) | KSEG3)
/*
* Memory segments (32bit kernel mode addresses)
* These are the traditional names used in the 32-bit universe.
*/
#define KUSEG 0x00000000
#define KSEG0 0x80000000
#define KSEG1 0xa0000000
#define KSEG2 0xc0000000
#define KSEG3 0xe0000000
#define CKUSEG 0x00000000
#define CKSEG0 0x80000000
#define CKSEG1 0xa0000000
#define CKSEG2 0xc0000000
#define CKSEG3 0xe0000000
#endif
/*
* Cache modes for XKPHYS address conversion macros
*/
#define K_CALG_COH_EXCL1_NOL2 0
#define K_CALG_COH_SHRL1_NOL2 1
#define K_CALG_UNCACHED 2
#define K_CALG_NONCOHERENT 3
#define K_CALG_COH_EXCL 4
#define K_CALG_COH_SHAREABLE 5
#define K_CALG_NOTUSED 6
#define K_CALG_UNCACHED_ACCEL 7
/*
* 64-bit address conversions
*/
#define PHYS_TO_XKSEG_UNCACHED(p) PHYS_TO_XKPHYS(K_CALG_UNCACHED,(p))
#define PHYS_TO_XKSEG_CACHED(p) PHYS_TO_XKPHYS(K_CALG_COH_SHAREABLE,(p))
#define XKPHYS_TO_PHYS(p) ((p) & TO_PHYS_MASK)
#define PHYS_TO_XKPHYS(cm,a) (0x8000000000000000 | ((cm)<<59) | (a))
#if defined (CONFIG_CPU_R4300) \
|| defined (CONFIG_CPU_R4X00) \
|| defined (CONFIG_CPU_R5000) \
|| defined (CONFIG_CPU_NEVADA) \
|| defined (CONFIG_CPU_TX49XX) \
|| defined (CONFIG_CPU_MIPS64)
#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_EXL_WR 0xa800000000000000 /* exclusive on write */
#define K0BASE_NONCOH 0x9800000000000000 /* noncoherent */
#define K0BASE_EXL 0xa000000000000000 /* exclusive */
#ifndef CONFIG_CPU_R8000
/*
* The R8000 doesn't have the 32-bit compat spaces so we don't define them
* in order to catch bugs in the source code.
*/
#define COMPAT_K1BASE32 0xffffffffa0000000
#define PHYS_TO_COMPATK1(x) ((x) | COMPAT_K1BASE32) /* 32-bit compat k1 */
#endif
#define KDM_TO_PHYS(x) (_ACAST64_ (x) & TO_PHYS_MASK)
#define PHYS_TO_K0(x) (_ACAST64_ (x) | CAC_BASE)
#endif /* _ASM_ADDRSPACE_H */
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