include/asm-arm/glue.h

   1 /*
   2  *  linux/include/asm-arm/glue.h
   3  *
   4  *  Copyright (C) 1997-1999 Russell King
   5  *  Copyright (C) 2000-2002 Deep Blue Solutions Ltd.
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  *
  11  *  This file provides the glue to stick the processor-specific bits
  12  *  into the kernel in an efficient manner.  The idea is to use branches
  13  *  when we're only targetting one class of TLB, or indirect calls
  14  *  when we're targetting multiple classes of TLBs.
  15  */
  16 #ifdef __KERNEL__
  17
  18
  19 #ifdef __STDC__
  20 #define ____glue(name,fn)       name##fn
  21 #else
  22 #define ____glue(name,fn)       name/**/fn
  23 #endif
  24 #define __glue(name,fn)         ____glue(name,fn)
  25
  26
  27
  28 /*
  29  *      Data Abort Model
  30  *      ================
  31  *
  32  *      We have the following to choose from:
  33  *        arm6          - ARM6 style
  34  *        arm7          - ARM7 style
  35  *        v4_early      - ARMv4 without Thumb early abort handler
  36  *        v4t_late      - ARMv4 with Thumb late abort handler
  37  *        v4t_early     - ARMv4 with Thumb early abort handler
  38  *        v5tej_early   - ARMv5 with Thumb and Java early abort handler
  39  *        xscale        - ARMv5 with Thumb with Xscale extensions
  40  *        v6_early      - ARMv6 generic early abort handler
  41  *        v7_early      - ARMv7 generic early abort handler
  42  */
  43 #undef CPU_DABORT_HANDLER
  44 #undef MULTI_DABORT
  45
  46 #if defined(CONFIG_CPU_ARM610)
  47 # ifdef CPU_DABORT_HANDLER
  48 #  define MULTI_DABORT 1
  49 # else
  50 #  define CPU_DABORT_HANDLER cpu_arm6_data_abort
  51 # endif
  52 #endif
  53
  54 #if defined(CONFIG_CPU_ARM710)
  55 # ifdef CPU_DABORT_HANDLER
  56 #  define MULTI_DABORT 1
  57 # else
  58 #  define CPU_DABORT_HANDLER cpu_arm7_data_abort
  59 # endif
  60 #endif
  61
  62 #ifdef CONFIG_CPU_ABRT_LV4T
  63 # ifdef CPU_DABORT_HANDLER
  64 #  define MULTI_DABORT 1
  65 # else
  66 #  define CPU_DABORT_HANDLER v4t_late_abort
  67 # endif
  68 #endif
  69
  70 #ifdef CONFIG_CPU_ABRT_EV4
  71 # ifdef CPU_DABORT_HANDLER
  72 #  define MULTI_DABORT 1
  73 # else
  74 #  define CPU_DABORT_HANDLER v4_early_abort
  75 # endif
  76 #endif
  77
  78 #ifdef CONFIG_CPU_ABRT_EV4T
  79 # ifdef CPU_DABORT_HANDLER
  80 #  define MULTI_DABORT 1
  81 # else
  82 #  define CPU_DABORT_HANDLER v4t_early_abort
  83 # endif
  84 #endif
  85
  86 #ifdef CONFIG_CPU_ABRT_EV5TJ
  87 # ifdef CPU_DABORT_HANDLER
  88 #  define MULTI_DABORT 1
  89 # else
  90 #  define CPU_DABORT_HANDLER v5tj_early_abort
  91 # endif
  92 #endif
  93
  94 #ifdef CONFIG_CPU_ABRT_EV5T
  95 # ifdef CPU_DABORT_HANDLER
  96 #  define MULTI_DABORT 1
  97 # else
  98 #  define CPU_DABORT_HANDLER v5t_early_abort
  99 # endif
 100 #endif
 101
 102 #ifdef CONFIG_CPU_ABRT_EV6
 103 # ifdef CPU_DABORT_HANDLER
 104 #  define MULTI_DABORT 1
 105 # else
 106 #  define CPU_DABORT_HANDLER v6_early_abort
 107 # endif
 108 #endif
 109
 110 #ifdef CONFIG_CPU_ABRT_EV7
 111 # ifdef CPU_DABORT_HANDLER
 112 #  define MULTI_DABORT 1
 113 # else
 114 #  define CPU_DABORT_HANDLER v7_early_abort
 115 # endif
 116 #endif
 117
 118 #ifndef CPU_DABORT_HANDLER
 119 #error Unknown data abort handler type
 120 #endif
 121
 122 /*
 123  * Prefetch abort handler.  If the CPU has an IFAR use that, otherwise
 124  * use the address of the aborted instruction
 125  */
 126 #undef CPU_PABORT_HANDLER
 127 #undef MULTI_PABORT
 128
 129 #ifdef CONFIG_CPU_PABRT_IFAR
 130 # ifdef CPU_PABORT_HANDLER
 131 #  define MULTI_PABORT 1
 132 # else
 133 #  define CPU_PABORT_HANDLER(reg, insn) mrc p15, 0, reg, cr6, cr0, 2
 134 # endif
 135 #endif
 136
 137 #ifdef CONFIG_CPU_PABRT_NOIFAR
 138 # ifdef CPU_PABORT_HANDLER
 139 #  define MULTI_PABORT 1
 140 # else
 141 #  define CPU_PABORT_HANDLER(reg, insn) mov reg, insn
 142 # endif
 143 #endif
 144
 145 #ifndef CPU_PABORT_HANDLER
 146 #error Unknown prefetch abort handler type
 147 #endif
 148
 149 #endif