| /* |
| * 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 <spaces.h> |
| |
| /* |
| * Configure language |
| */ |
| #ifdef __ASSEMBLY__ |
| #define _ATYPE_ |
| #define _ATYPE32_ |
| #define _ATYPE64_ |
| #define _LLCONST_(x) x |
| #else |
| #define _ATYPE_ __PTRDIFF_TYPE__ |
| #define _ATYPE32_ int |
| #define _ATYPE64_ long long |
| #define _LLCONST_(x) x ## LL |
| #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)) & \ |
| _LLCONST_(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 _LLCONST_(0x0000000000000000) |
| #define XKSSEG _LLCONST_(0x4000000000000000) |
| #define XKPHYS _LLCONST_(0x8000000000000000) |
| #define XKSEG _LLCONST_(0xc000000000000000) |
| #define CKSEG0 _LLCONST_(0xffffffff80000000) |
| #define CKSEG1 _LLCONST_(0xffffffffa0000000) |
| #define CKSSEG _LLCONST_(0xffffffffc0000000) |
| #define CKSEG3 _LLCONST_(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) (_LLCONST_(0x8000000000000000) | \ |
| ((cm)<<59) | (a)) |
| |
| #if defined (CONFIG_CPU_R4300) \ |
| || defined (CONFIG_CPU_R4X00) \ |
| || defined (CONFIG_CPU_R5000) \ |
| || defined (CONFIG_CPU_RM7000) \ |
| || defined (CONFIG_CPU_NEVADA) \ |
| || defined (CONFIG_CPU_TX49XX) \ |
| || defined (CONFIG_CPU_MIPS64) |
| #define TO_PHYS_MASK _LLCONST_(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 TO_PHYS_MASK _LLCONST_(0x000000ffffffffff) /* 2^^40 - 1 */ |
| #endif |
| |
| #if defined (CONFIG_CPU_R10000) |
| #define TO_PHYS_MASK _LLCONST_(0x000000ffffffffff) /* 2^^40 - 1 */ |
| #endif |
| |
| #if defined(CONFIG_CPU_SB1) || defined(CONFIG_CPU_SB1A) |
| #define TO_PHYS_MASK _LLCONST_(0x00000fffffffffff) /* 2^^44 - 1 */ |
| #endif |
| |
| #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 _LLCONST_(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 */ |
