188 lines
5.4 KiB
C
188 lines
5.4 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1996, 99 Ralf Baechle
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* Copyright (C) 2000, 2002 Maciej W. Rozycki
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* Copyright (C) 1990, 1999 by Silicon Graphics, Inc.
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*/
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#ifndef _ASM_ADDRSPACE_H
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#define _ASM_ADDRSPACE_H
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#include <linux/config.h>
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#include <spaces.h>
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/*
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* Configure language
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*/
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#ifdef __ASSEMBLY__
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#define _ATYPE_
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#define _ATYPE32_
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#define _ATYPE64_
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#else
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#define _ATYPE_ __PTRDIFF_TYPE__
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#define _ATYPE32_ int
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#define _ATYPE64_ long long
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#endif
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/*
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* 32-bit MIPS address spaces
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*/
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#ifdef __ASSEMBLY__
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#define _ACAST32_
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#define _ACAST64_
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#else
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#define _ACAST32_ (_ATYPE_)(_ATYPE32_) /* widen if necessary */
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#define _ACAST64_ (_ATYPE64_) /* do _not_ narrow */
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#endif
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/*
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* Returns the kernel segment base of a given address
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*/
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#define KSEGX(a) ((_ACAST32_ (a)) & 0xe0000000)
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/*
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* Returns the physical address of a CKSEGx / XKPHYS address
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*/
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#define CPHYSADDR(a) ((_ACAST32_ (a)) & 0x1fffffff)
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#define XPHYSADDR(a) ((_ACAST64_ (a)) & 0x000000ffffffffff)
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#ifdef CONFIG_MIPS64
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/*
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* Memory segments (64bit kernel mode addresses)
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* The compatibility segments use the full 64-bit sign extended value. Note
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* the R8000 doesn't have them so don't reference these in generic MIPS code.
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*/
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#define XKUSEG 0x0000000000000000
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#define XKSSEG 0x4000000000000000
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#define XKPHYS 0x8000000000000000
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#define XKSEG 0xc000000000000000
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#define CKSEG0 0xffffffff80000000
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#define CKSEG1 0xffffffffa0000000
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#define CKSSEG 0xffffffffc0000000
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#define CKSEG3 0xffffffffe0000000
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#define CKSEG0ADDR(a) (CPHYSADDR(a) | CKSEG0)
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#define CKSEG1ADDR(a) (CPHYSADDR(a) | CKSEG1)
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#define CKSEG2ADDR(a) (CPHYSADDR(a) | CKSEG2)
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#define CKSEG3ADDR(a) (CPHYSADDR(a) | CKSEG3)
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#else
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#define CKSEG0ADDR(a) (CPHYSADDR(a) | KSEG0)
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#define CKSEG1ADDR(a) (CPHYSADDR(a) | KSEG1)
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#define CKSEG2ADDR(a) (CPHYSADDR(a) | KSEG2)
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#define CKSEG3ADDR(a) (CPHYSADDR(a) | KSEG3)
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/*
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* Map an address to a certain kernel segment
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*/
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#define KSEG0ADDR(a) (CPHYSADDR(a) | KSEG0)
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#define KSEG1ADDR(a) (CPHYSADDR(a) | KSEG1)
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#define KSEG2ADDR(a) (CPHYSADDR(a) | KSEG2)
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#define KSEG3ADDR(a) (CPHYSADDR(a) | KSEG3)
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/*
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* Memory segments (32bit kernel mode addresses)
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* These are the traditional names used in the 32-bit universe.
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*/
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#define KUSEG 0x00000000
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#define KSEG0 0x80000000
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#define KSEG1 0xa0000000
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#define KSEG2 0xc0000000
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#define KSEG3 0xe0000000
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#define CKUSEG 0x00000000
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#define CKSEG0 0x80000000
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#define CKSEG1 0xa0000000
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#define CKSEG2 0xc0000000
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#define CKSEG3 0xe0000000
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#endif
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/*
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* Cache modes for XKPHYS address conversion macros
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*/
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#define K_CALG_COH_EXCL1_NOL2 0
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#define K_CALG_COH_SHRL1_NOL2 1
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#define K_CALG_UNCACHED 2
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#define K_CALG_NONCOHERENT 3
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#define K_CALG_COH_EXCL 4
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#define K_CALG_COH_SHAREABLE 5
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#define K_CALG_NOTUSED 6
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#define K_CALG_UNCACHED_ACCEL 7
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/*
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* 64-bit address conversions
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*/
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#define PHYS_TO_XKSEG_UNCACHED(p) PHYS_TO_XKPHYS(K_CALG_UNCACHED,(p))
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#define PHYS_TO_XKSEG_CACHED(p) PHYS_TO_XKPHYS(K_CALG_COH_SHAREABLE,(p))
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#define XKPHYS_TO_PHYS(p) ((p) & TO_PHYS_MASK)
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#define PHYS_TO_XKPHYS(cm,a) (0x8000000000000000 | ((cm)<<59) | (a))
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#if defined (CONFIG_CPU_R4300) \
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|| defined (CONFIG_CPU_R4X00) \
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|| defined (CONFIG_CPU_R5000) \
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|| defined (CONFIG_CPU_NEVADA) \
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|| defined (CONFIG_CPU_TX49XX) \
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|| defined (CONFIG_CPU_MIPS64)
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#define KUSIZE 0x0000010000000000 /* 2^^40 */
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#define KUSIZE_64 0x0000010000000000 /* 2^^40 */
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#define K0SIZE 0x0000001000000000 /* 2^^36 */
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#define K1SIZE 0x0000001000000000 /* 2^^36 */
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#define K2SIZE 0x000000ff80000000
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#define KSEGSIZE 0x000000ff80000000 /* max syssegsz */
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#define TO_PHYS_MASK 0x0000000fffffffff /* 2^^36 - 1 */
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#endif
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#if defined (CONFIG_CPU_R8000)
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/* We keep KUSIZE consistent with R4000 for now (2^^40) instead of (2^^48) */
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#define KUSIZE 0x0000010000000000 /* 2^^40 */
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#define KUSIZE_64 0x0000010000000000 /* 2^^40 */
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#define K0SIZE 0x0000010000000000 /* 2^^40 */
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#define K1SIZE 0x0000010000000000 /* 2^^40 */
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#define K2SIZE 0x0001000000000000
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#define KSEGSIZE 0x0000010000000000 /* max syssegsz */
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#define TO_PHYS_MASK 0x000000ffffffffff /* 2^^40 - 1 */
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#endif
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#if defined (CONFIG_CPU_R10000)
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#define KUSIZE 0x0000010000000000 /* 2^^40 */
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#define KUSIZE_64 0x0000010000000000 /* 2^^40 */
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#define K0SIZE 0x0000010000000000 /* 2^^40 */
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#define K1SIZE 0x0000010000000000 /* 2^^40 */
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#define K2SIZE 0x00000fff80000000
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#define KSEGSIZE 0x00000fff80000000 /* max syssegsz */
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#define TO_PHYS_MASK 0x000000ffffffffff /* 2^^40 - 1 */
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#endif
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/*
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* Further names for SGI source compatibility. These are stolen from
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* IRIX's <sys/mips_addrspace.h>.
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*/
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#define KUBASE 0
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#define KUSIZE_32 0x0000000080000000 /* KUSIZE
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for a 32 bit proc */
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#define K0BASE_EXL_WR 0xa800000000000000 /* exclusive on write */
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#define K0BASE_NONCOH 0x9800000000000000 /* noncoherent */
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#define K0BASE_EXL 0xa000000000000000 /* exclusive */
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#ifndef CONFIG_CPU_R8000
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/*
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* The R8000 doesn't have the 32-bit compat spaces so we don't define them
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* in order to catch bugs in the source code.
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*/
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#define COMPAT_K1BASE32 0xffffffffa0000000
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#define PHYS_TO_COMPATK1(x) ((x) | COMPAT_K1BASE32) /* 32-bit compat k1 */
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#endif
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#define KDM_TO_PHYS(x) (_ACAST64_ (x) & TO_PHYS_MASK)
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#define PHYS_TO_K0(x) (_ACAST64_ (x) | CAC_BASE)
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#endif /* _ASM_ADDRSPACE_H */
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