123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154 |
- /*
- * 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))
- /*
- * 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 */
- #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 _CONST64_(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 */
|