| /* |
| * 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 _CONST64_(x) x |
| #else |
| #define _ATYPE_ __PTRDIFF_TYPE__ |
| #define _ATYPE32_ int |
| #define _ATYPE64_ __s64 |
| #ifdef CONFIG_64BIT |
| #define _CONST64_(x) x ## L |
| #else |
| #define _CONST64_(x) x ## LL |
| #endif |
| #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)) & _ACAST32_(0xe0000000)) |
| |
| /* |
| * Gives the size of each kernel segment |
| */ |
| #define CSEGX_SIZE 0x20000000 |
| |
| /* |
| * Returns the physical address of a CKSEGx / XKPHYS address |
| */ |
| #define CPHYSADDR(a) ((_ACAST32_(a)) & 0x1fffffff) |
| #define XPHYSADDR(a) ((_ACAST64_(a)) & \ |
| _CONST64_(0x0000ffffffffffff)) |
| |
| #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 _CONST64_(0x0000000000000000) |
| #define XKSSEG _CONST64_(0x4000000000000000) |
| #define XKPHYS _CONST64_(0x8000000000000000) |
| #define XKSEG _CONST64_(0xc000000000000000) |
| #define CKSEG0 _CONST64_(0xffffffff80000000) |
| #define CKSEG1 _CONST64_(0xffffffffa0000000) |
| #define CKSSEG _CONST64_(0xffffffffc0000000) |
| #define CKSEG3 _CONST64_(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) (XKPHYS | (_ACAST64_(cm) << 59) | (a)) |
| |
| /* |
| * The ultimate limited of the 64-bit MIPS architecture: 2 bits for selecting |
| * the region, 3 bits for the CCA mode. This leaves 59 bits of which the |
| * R8000 implements most with its 48-bit physical address space. |
| */ |
| #define TO_PHYS_MASK _CONST64_(0x07ffffffffffffff) /* 2^^59 - 1 */ |
| |
| #define COMPAT_K1BASE32 _CONST64_(0xffffffffa0000000) |
| #define PHYS_TO_COMPATK1(x) ((x) | COMPAT_K1BASE32) /* 32-bit compat k1 */ |
| |
| #define KDM_TO_PHYS(x) (_ACAST64_ (x) & TO_PHYS_MASK) |
| #define PHYS_TO_K0(x) (_ACAST64_ (x) | CAC_BASE) |
| |
| #endif /* _ASM_ADDRSPACE_H */ |
