include/asm-ia64/kregs.h

   1 #ifndef _ASM_IA64_KREGS_H
   2 #define _ASM_IA64_KREGS_H
   3
   4 /*
   5  * Copyright (C) 2001-2002 Hewlett-Packard Co
   6  *      David Mosberger-Tang <davidm@hpl.hp.com>
   7  */
   8 /*
   9  * This file defines the kernel register usage convention used by Linux/ia64.
  10  */
  11
  12 /*
  13  * Kernel registers:
  14  */
  15 #define IA64_KR_IO_BASE         0       /* ar.k0: legacy I/O base address */
  16 #define IA64_KR_TSSD            1       /* ar.k1: IVE uses this as the TSSD */
  17 #define IA64_KR_PER_CPU_DATA    3       /* ar.k3: physical per-CPU base */
  18 #define IA64_KR_CURRENT_STACK   4       /* ar.k4: what's mapped in IA64_TR_CURRENT_STACK */
  19 #define IA64_KR_FPU_OWNER       5       /* ar.k5: fpu-owner (UP only, at the moment) */
  20 #define IA64_KR_CURRENT         6       /* ar.k6: "current" task pointer */
  21 #define IA64_KR_PT_BASE         7       /* ar.k7: page table base address (physical) */
  22
  23 #define _IA64_KR_PASTE(x,y)     x##y
  24 #define _IA64_KR_PREFIX(n)      _IA64_KR_PASTE(ar.k, n)
  25 #define IA64_KR(n)              _IA64_KR_PREFIX(IA64_KR_##n)
  26
  27 /*
  28  * Translation registers:
  29  */
  30 #define IA64_TR_KERNEL          0       /* itr0, dtr0: maps kernel image (code & data) */
  31 #define IA64_TR_PALCODE         1       /* itr1: maps PALcode as required by EFI */
  32 #define IA64_TR_CURRENT_STACK   1       /* dtr1: maps kernel's memory- & register-stacks */
  33
  34 /* Processor status register bits: */
  35 #define IA64_PSR_BE_BIT         1
  36 #define IA64_PSR_UP_BIT         2
  37 #define IA64_PSR_AC_BIT         3
  38 #define IA64_PSR_MFL_BIT        4
  39 #define IA64_PSR_MFH_BIT        5
  40 #define IA64_PSR_IC_BIT         13
  41 #define IA64_PSR_I_BIT          14
  42 #define IA64_PSR_PK_BIT         15
  43 #define IA64_PSR_DT_BIT         17
  44 #define IA64_PSR_DFL_BIT        18
  45 #define IA64_PSR_DFH_BIT        19
  46 #define IA64_PSR_SP_BIT         20
  47 #define IA64_PSR_PP_BIT         21
  48 #define IA64_PSR_DI_BIT         22
  49 #define IA64_PSR_SI_BIT         23
  50 #define IA64_PSR_DB_BIT         24
  51 #define IA64_PSR_LP_BIT         25
  52 #define IA64_PSR_TB_BIT         26
  53 #define IA64_PSR_RT_BIT         27
  54 /* The following are not affected by save_flags()/restore_flags(): */
  55 #define IA64_PSR_CPL0_BIT       32
  56 #define IA64_PSR_CPL1_BIT       33
  57 #define IA64_PSR_IS_BIT         34
  58 #define IA64_PSR_MC_BIT         35
  59 #define IA64_PSR_IT_BIT         36
  60 #define IA64_PSR_ID_BIT         37
  61 #define IA64_PSR_DA_BIT         38
  62 #define IA64_PSR_DD_BIT         39
  63 #define IA64_PSR_SS_BIT         40
  64 #define IA64_PSR_RI_BIT         41
  65 #define IA64_PSR_ED_BIT         43
  66 #define IA64_PSR_BN_BIT         44
  67 #define IA64_PSR_IA_BIT         45
  68
  69 /* A mask of PSR bits that we generally don't want to inherit across a clone2() or an
  70    execve().  Only list flags here that need to be cleared/set for BOTH clone2() and
  71    execve().  */
  72 #define IA64_PSR_BITS_TO_CLEAR  (IA64_PSR_MFL | IA64_PSR_MFH | IA64_PSR_DB | IA64_PSR_LP | \
  73                                  IA64_PSR_TB  | IA64_PSR_ID  | IA64_PSR_DA | IA64_PSR_DD | \
  74                                  IA64_PSR_SS  | IA64_PSR_ED  | IA64_PSR_IA)
  75 #define IA64_PSR_BITS_TO_SET    (IA64_PSR_DFH | IA64_PSR_SP)
  76
  77 #define IA64_PSR_BE     (__IA64_UL(1) << IA64_PSR_BE_BIT)
  78 #define IA64_PSR_UP     (__IA64_UL(1) << IA64_PSR_UP_BIT)
  79 #define IA64_PSR_AC     (__IA64_UL(1) << IA64_PSR_AC_BIT)
  80 #define IA64_PSR_MFL    (__IA64_UL(1) << IA64_PSR_MFL_BIT)
  81 #define IA64_PSR_MFH    (__IA64_UL(1) << IA64_PSR_MFH_BIT)
  82 #define IA64_PSR_IC     (__IA64_UL(1) << IA64_PSR_IC_BIT)
  83 #define IA64_PSR_I      (__IA64_UL(1) << IA64_PSR_I_BIT)
  84 #define IA64_PSR_PK     (__IA64_UL(1) << IA64_PSR_PK_BIT)
  85 #define IA64_PSR_DT     (__IA64_UL(1) << IA64_PSR_DT_BIT)
  86 #define IA64_PSR_DFL    (__IA64_UL(1) << IA64_PSR_DFL_BIT)
  87 #define IA64_PSR_DFH    (__IA64_UL(1) << IA64_PSR_DFH_BIT)
  88 #define IA64_PSR_SP     (__IA64_UL(1) << IA64_PSR_SP_BIT)
  89 #define IA64_PSR_PP     (__IA64_UL(1) << IA64_PSR_PP_BIT)
  90 #define IA64_PSR_DI     (__IA64_UL(1) << IA64_PSR_DI_BIT)
  91 #define IA64_PSR_SI     (__IA64_UL(1) << IA64_PSR_SI_BIT)
  92 #define IA64_PSR_DB     (__IA64_UL(1) << IA64_PSR_DB_BIT)
  93 #define IA64_PSR_LP     (__IA64_UL(1) << IA64_PSR_LP_BIT)
  94 #define IA64_PSR_TB     (__IA64_UL(1) << IA64_PSR_TB_BIT)
  95 #define IA64_PSR_RT     (__IA64_UL(1) << IA64_PSR_RT_BIT)
  96 /* The following are not affected by save_flags()/restore_flags(): */
  97 #define IA64_PSR_CPL    (__IA64_UL(3) << IA64_PSR_CPL0_BIT)
  98 #define IA64_PSR_IS     (__IA64_UL(1) << IA64_PSR_IS_BIT)
  99 #define IA64_PSR_MC     (__IA64_UL(1) << IA64_PSR_MC_BIT)
 100 #define IA64_PSR_IT     (__IA64_UL(1) << IA64_PSR_IT_BIT)
 101 #define IA64_PSR_ID     (__IA64_UL(1) << IA64_PSR_ID_BIT)
 102 #define IA64_PSR_DA     (__IA64_UL(1) << IA64_PSR_DA_BIT)
 103 #define IA64_PSR_DD     (__IA64_UL(1) << IA64_PSR_DD_BIT)
 104 #define IA64_PSR_SS     (__IA64_UL(1) << IA64_PSR_SS_BIT)
 105 #define IA64_PSR_RI     (__IA64_UL(3) << IA64_PSR_RI_BIT)
 106 #define IA64_PSR_ED     (__IA64_UL(1) << IA64_PSR_ED_BIT)
 107 #define IA64_PSR_BN     (__IA64_UL(1) << IA64_PSR_BN_BIT)
 108 #define IA64_PSR_IA     (__IA64_UL(1) << IA64_PSR_IA_BIT)
 109
 110 /* User mask bits: */
 111 #define IA64_PSR_UM     (IA64_PSR_BE | IA64_PSR_UP | IA64_PSR_AC | IA64_PSR_MFL | IA64_PSR_MFH)
 112
 113 /* Default Control Register */
 114 #define IA64_DCR_PP_BIT          0      /* privileged performance monitor default */
 115 #define IA64_DCR_BE_BIT          1      /* big-endian default */
 116 #define IA64_DCR_LC_BIT          2      /* ia32 lock-check enable */
 117 #define IA64_DCR_DM_BIT          8      /* defer TLB miss faults */
 118 #define IA64_DCR_DP_BIT          9      /* defer page-not-present faults */
 119 #define IA64_DCR_DK_BIT         10      /* defer key miss faults */
 120 #define IA64_DCR_DX_BIT         11      /* defer key permission faults */
 121 #define IA64_DCR_DR_BIT         12      /* defer access right faults */
 122 #define IA64_DCR_DA_BIT         13      /* defer access bit faults */
 123 #define IA64_DCR_DD_BIT         14      /* defer debug faults */
 124
 125 #define IA64_DCR_PP     (__IA64_UL(1) << IA64_DCR_PP_BIT)
 126 #define IA64_DCR_BE     (__IA64_UL(1) << IA64_DCR_BE_BIT)
 127 #define IA64_DCR_LC     (__IA64_UL(1) << IA64_DCR_LC_BIT)
 128 #define IA64_DCR_DM     (__IA64_UL(1) << IA64_DCR_DM_BIT)
 129 #define IA64_DCR_DP     (__IA64_UL(1) << IA64_DCR_DP_BIT)
 130 #define IA64_DCR_DK     (__IA64_UL(1) << IA64_DCR_DK_BIT)
 131 #define IA64_DCR_DX     (__IA64_UL(1) << IA64_DCR_DX_BIT)
 132 #define IA64_DCR_DR     (__IA64_UL(1) << IA64_DCR_DR_BIT)
 133 #define IA64_DCR_DA     (__IA64_UL(1) << IA64_DCR_DA_BIT)
 134 #define IA64_DCR_DD     (__IA64_UL(1) << IA64_DCR_DD_BIT)
 135
 136 /* Interrupt Status Register */
 137 #define IA64_ISR_X_BIT          32      /* execute access */
 138 #define IA64_ISR_W_BIT          33      /* write access */
 139 #define IA64_ISR_R_BIT          34      /* read access */
 140 #define IA64_ISR_NA_BIT         35      /* non-access */
 141 #define IA64_ISR_SP_BIT         36      /* speculative load exception */
 142 #define IA64_ISR_RS_BIT         37      /* mandatory register-stack exception */
 143 #define IA64_ISR_IR_BIT         38      /* invalid register frame exception */
 144 #define IA64_ISR_CODE_MASK      0xf
 145
 146 #define IA64_ISR_X      (__IA64_UL(1) << IA64_ISR_X_BIT)
 147 #define IA64_ISR_W      (__IA64_UL(1) << IA64_ISR_W_BIT)
 148 #define IA64_ISR_R      (__IA64_UL(1) << IA64_ISR_R_BIT)
 149 #define IA64_ISR_NA     (__IA64_UL(1) << IA64_ISR_NA_BIT)
 150 #define IA64_ISR_SP     (__IA64_UL(1) << IA64_ISR_SP_BIT)
 151 #define IA64_ISR_RS     (__IA64_UL(1) << IA64_ISR_RS_BIT)
 152 #define IA64_ISR_IR     (__IA64_UL(1) << IA64_ISR_IR_BIT)
 153
 154 /* ISR code field for non-access instructions */
 155 #define IA64_ISR_CODE_TPA       0
 156 #define IA64_ISR_CODE_FC        1
 157 #define IA64_ISR_CODE_PROBE     2
 158 #define IA64_ISR_CODE_TAK       3
 159 #define IA64_ISR_CODE_LFETCH    4
 160 #define IA64_ISR_CODE_PROBEF    5
 161
 162 #endif /* _ASM_IA64_kREGS_H */