addrspace.h

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    1 /*
    2  * This file is subject to the terms and conditions of the GNU General Public
    3  * License.  See the file "COPYING" in the main directory of this archive
    4  * for more details.
    5  *
    6  * Copyright (C) 1996, 1999 by Ralf Baechle
    7  * Copyright (C) 1990, 1999 by Silicon Graphics, Inc.
    8  * Copyright (C) 2002  Maciej W. Rozycki
    9  */
   10 #ifndef __ASM_MIPS64_ADDRSPACE_H
   11 #define __ASM_MIPS64_ADDRSPACE_H
   12 
   13 #include <linux/config.h>
   14 
   15 /*
   16  *  Configure language
   17  */
   18 #ifdef __ASSEMBLY__
   19 #define _ATYPE_
   20 #define _ATYPE32_
   21 #define _ATYPE64_
   22 #else
   23 #define _ATYPE_         __PTRDIFF_TYPE__
   24 #define _ATYPE32_       int
   25 #define _ATYPE64_       long long
   26 #endif
   27 
   28 /*
   29  *  32-bit MIPS address spaces
   30  */
   31 #ifdef __ASSEMBLY__
   32 #define _ACAST32_
   33 #define _ACAST64_
   34 #else
   35 #define _ACAST32_               (_ATYPE_)(_ATYPE32_)    /* widen if necessary */
   36 #define _ACAST64_               (_ATYPE64_)             /* do _not_ narrow */
   37 #endif
   38 
   39 /*
   40  * Memory segments (32bit kernel mode addresses)
   41  */
   42 #define KUSEG                   0x0000000000000000
   43 #define KSEG0                   0xffffffff80000000
   44 #define KSEG1                   0xffffffffa0000000
   45 #define KSEG2                   0xffffffffc0000000
   46 #define KSEG3                   0xffffffffe0000000
   47 
   48 /*
   49  * Returns the kernel segment base of a given address
   50  */
   51 #define KSEGX(a)                ((_ACAST64_ (a)) & 0xffffffffe0000000)
   52 
   53 /*
   54  * Returns the physical address of a KSEG0/KSEG1 address
   55  */
   56 #define XPHYSADDR(a)            ((_ACAST64_ (a)) & 0x000000ffffffffff)
   57 #define CPHYSADDR(a)            ((_ACAST64_ (a)) & 0x000000001fffffff)
   58 
   59 #ifndef __ASSEMBLY__
   60 #define PHYSADDR(a) ({                                          \
   61         const _ATYPE64_ _a = _ACAST64_ (a);                     \
   62         _a == _ACAST32_ _a ? CPHYSADDR(_a) : XPHYSADDR(_a); })
   63 #endif
   64 
   65 /*
   66  * Map an address to a certain kernel segment
   67  */
   68 #define KSEG0ADDR(a)            (CPHYSADDR(a) | KSEG0)
   69 #define KSEG1ADDR(a)            (CPHYSADDR(a) | KSEG1)
   70 #define KSEG2ADDR(a)            (CPHYSADDR(a) | KSEG2)
   71 #define KSEG3ADDR(a)            (CPHYSADDR(a) | KSEG3)
   72 
   73 /*
   74  * Memory segments (64bit kernel mode addresses)
   75  */
   76 #define XKUSEG                  0x0000000000000000
   77 #define XKSSEG                  0x4000000000000000
   78 #define XKPHYS                  0x8000000000000000
   79 #define XKSEG                   0xc000000000000000
   80 #define CKSEG0                  0xffffffff80000000
   81 #define CKSEG1                  0xffffffffa0000000
   82 #define CKSSEG                  0xffffffffc0000000
   83 #define CKSEG3                  0xffffffffe0000000
   84 
   85 #if defined (CONFIG_CPU_R4300)                                          \
   86     || defined (CONFIG_CPU_R4X00)                                       \
   87     || defined (CONFIG_CPU_R5000)                                       \
   88     || defined (CONFIG_CPU_NEVADA)                                      \
   89     || defined (CONFIG_CPU_MIPS64)
   90 #define KUSIZE                  0x0000010000000000      /* 2^^40 */
   91 #define KUSIZE_64               0x0000010000000000      /* 2^^40 */
   92 #define K0SIZE                  0x0000001000000000      /* 2^^36 */
   93 #define K1SIZE                  0x0000001000000000      /* 2^^36 */
   94 #define K2SIZE                  0x000000ff80000000
   95 #define KSEGSIZE                0x000000ff80000000      /* max syssegsz */
   96 #define TO_PHYS_MASK            0x0000000fffffffff      /* 2^^36 - 1 */
   97 #endif
   98 
   99 #if defined (CONFIG_CPU_R8000)
  100 /* We keep KUSIZE consistent with R4000 for now (2^^40) instead of (2^^48) */
  101 #define KUSIZE                  0x0000010000000000      /* 2^^40 */
  102 #define KUSIZE_64               0x0000010000000000      /* 2^^40 */
  103 #define K0SIZE                  0x0000010000000000      /* 2^^40 */
  104 #define K1SIZE                  0x0000010000000000      /* 2^^40 */
  105 #define K2SIZE                  0x0001000000000000
  106 #define KSEGSIZE                0x0000010000000000      /* max syssegsz */
  107 #define TO_PHYS_MASK            0x000000ffffffffff      /* 2^^40 - 1 */
  108 #endif
  109 
  110 #if defined (CONFIG_CPU_R10000)
  111 #define KUSIZE                  0x0000010000000000      /* 2^^40 */
  112 #define KUSIZE_64               0x0000010000000000      /* 2^^40 */
  113 #define K0SIZE                  0x0000010000000000      /* 2^^40 */
  114 #define K1SIZE                  0x0000010000000000      /* 2^^40 */
  115 #define K2SIZE                  0x00000fff80000000
  116 #define KSEGSIZE                0x00000fff80000000      /* max syssegsz */
  117 #define TO_PHYS_MASK            0x000000ffffffffff      /* 2^^40 - 1 */
  118 #endif
  119 
  120 /*
  121  * Further names for SGI source compatibility.  These are stolen from
  122  * IRIX's <sys/mips_addrspace.h>.
  123  */
  124 #define KUBASE                  0
  125 #define KUSIZE_32               0x0000000080000000      /* KUSIZE
  126                                                            for a 32 bit proc */
  127 #define K0BASE                  0xa800000000000000
  128 #define K0BASE_EXL_WR           K0BASE                  /* exclusive on write */
  129 #define K0BASE_NONCOH           0x9800000000000000      /* noncoherent */
  130 #define K0BASE_EXL              0xa000000000000000      /* exclusive */
  131 
  132 #ifdef CONFIG_SGI_IP27
  133 #define K1BASE                  0x9600000000000000      /* uncached attr 3,
  134                                                            uncac */
  135 #else
  136 #define K1BASE                  0x9000000000000000
  137 #endif
  138 #define K2BASE                  0xc000000000000000
  139 
  140 #if !defined (CONFIG_CPU_R8000)
  141 #define COMPAT_K1BASE32         0xffffffffa0000000
  142 #define PHYS_TO_COMPATK1(x)     ((x) | COMPAT_K1BASE32) /* 32-bit compat k1 */
  143 #endif
  144 
  145 #define KDM_TO_PHYS(x)          (_ACAST64_ (x) & TO_PHYS_MASK)
  146 #define PHYS_TO_K0(x)           (_ACAST64_ (x) | K0BASE)
  147 
  148 #endif /* __ASM_MIPS64_ADDRSPACE_H */

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FreeBSD/Linux Kernel Cross Reference sys/include/asm-mips64/addrspace.h

FreeBSD/Linux Kernel Cross Reference
sys/include/asm-mips64/addrspace.h