/* * 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_MIPS64 /* * 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 */