target/linux/ubicom32/files/arch/ubicom32/include/asm/ip5000-asm.h

   1 /*
   2  * arch/ubicom32/include/asm/ip5000-asm.h
   3  *      Instruction macros for the IP5000.
   4  *
   5  * (C) Copyright 2009, Ubicom, Inc.
   6  *
   7  * This file is part of the Ubicom32 Linux Kernel Port.
   8  *
   9  * The Ubicom32 Linux Kernel Port is free software: you can redistribute
  10  * it and/or modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation, either version 2 of the
  12  * License, or (at your option) any later version.
  13  *
  14  * The Ubicom32 Linux Kernel Port is distributed in the hope that it
  15  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  16  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  17  * the GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with the Ubicom32 Linux Kernel Port.  If not,
  21  * see <http://www.gnu.org/licenses/>.
  22  *
  23  * Ubicom32 implementation derived from (with many thanks):
  24  *   arch/m68knommu
  25  *   arch/blackfin
  26  *   arch/parisc
  27  */
  28
  29 #ifndef _ASM_UBICOM32_IP5000_ASM_H
  30 #define _ASM_UBICOM32_IP5000_ASM_H
  31
  32 #if !defined(__LINKER__)
  33
  34 #if defined(__ASSEMBLY__)
  35 .macro  cycles  quant
  36 .if     (\quant) == 1
  37         nop
  38 .else
  39 .if     (((\quant) + 3) / 8) > 0
  40 .rept   (((\quant) + 3) / 8)
  41         jmpt.f          .+4
  42 .endr
  43 .endif
  44 .if     ((((\quant) + 3) % 8) / 4) > 0
  45         jmpt.t          .+4
  46 .endif
  47 .endif
  48 .endm
  49 #else
  50 /*
  51  * Same macro as above just in C inline asm
  52  */
  53 asm ("                                  \n\
  54 .macro  cycles  quant                   \n\
  55 .if     (\\quant) == 1                  \n\
  56         nop                             \n\
  57 .else                                   \n\
  58 .if     (((\\quant) + 3) / 8) > 0       \n\
  59 .rept   (((\\quant) + 3) / 8)           \n\
  60         jmpt.f          .+4             \n\
  61 .endr                                   \n\
  62 .endif                                  \n\
  63 .if     ((((\\quant) + 3) % 8) / 4) > 0 \n\
  64         jmpt.t          .+4             \n\
  65 .endif                                  \n\
  66 .endif                                  \n\
  67 .endm                                   \n\
  68 ");
  69 #endif
  70
  71
  72 #if defined(__ASSEMBLY__)
  73 .macro  pipe_flush      cyc
  74         cycles          11 - (\cyc)
  75 .endm
  76 #else
  77 /*
  78  * Same macro as above just in C inline asm
  79  */
  80 asm ("                                  \n\
  81 .macro  pipe_flush      cyc             \n\
  82         cycles          11 - (\\cyc)    \n\
  83 .endm                                   \n\
  84 ");
  85
  86 #endif
  87
  88 #if defined(__ASSEMBLY__)
  89 .macro  setcsr_flush    cyc
  90         cycles          5 - (\cyc)
  91 .endm
  92 #else
  93 /*
  94  * Same macro as above just in C inline asm
  95  */
  96 asm ("                                  \n\
  97 .macro  setcsr_flush    cyc             \n\
  98         cycles          5 - (\\cyc)     \n\
  99 .endm                                   \n\
 100 ");
 101 #endif
 102
 103 /*
 104  * Macros for prefetch (using miss-aligned memory write)
 105  */
 106 #if defined(__ASSEMBLY__)
 107
 108 .macro  pre_fetch_macro thread_num, Ascratch, Aaddress length
 109         bclr            MT_TRAP_EN, MT_TRAP_EN, #(\thread_num)
 110         bset            \Ascratch, \Aaddress, #0        ; force a miss-aligned address
 111         jmpt.t          .+4                             ; delay for both address setup and trap disable
 112         move.4          (\Ascratch), #0
 113         .if             (\length > 32)
 114         move.4          32(\Ascratch), #0
 115         .endif
 116         .if             (\length > 64)
 117         move.4          64(\Ascratch), #0
 118         .endif
 119         .if             (\length > 96)
 120         move.4          96(\Ascratch), #0
 121         .endif
 122         .if             (\length > 128)
 123         invalid_instruction                             ; maximum pre-fetch size is 4 cache lines
 124         .endif
 125         bset            MT_TRAP_EN, MT_TRAP_EN, #(\thread_num)
 126 .endm
 127
 128 #else
 129 /*
 130  * Same macro as above just in C inline asm
 131  */
 132 asm ("                                                          \n\
 133 .macro  pre_fetch_macro thread_num, Ascratch, Aaddress length   \n\
 134         bclr            MT_TRAP_EN, MT_TRAP_EN, #(\thread_num)  \n\
 135         bset            \\Ascratch, \\Aaddress, #0      ; force a miss-aligned address \n\
 136         jmpt.t          .+4                             ; delay for both address setup and trap disable \n\
 137         move.4          (\\Ascratch), #0                        \n\
 138         .if             (\\length > 32)                         \n\
 139         move.4          32(\\Ascratch), #0                      \n\
 140         .endif                                                  \n\
 141         .if             (\\length > 64)                         \n\
 142         move.4          64(\\Ascratch), #0                      \n\
 143         .endif                                                  \n\
 144         .if             (\\length > 96)                         \n\
 145         move.4          96(\\Ascratch), #0                      \n\
 146         .endif                                                  \n\
 147         .if             (\\length > 128)                        \n\
 148         invalid_instruction                             ; maximum pre-fetch size is 4 cache lines \n\
 149         .endif                                                  \n\
 150         bset            MT_TRAP_EN, MT_TRAP_EN, #(\\thread_num) \n\
 151 .endm                                                           \n\
 152 ");
 153 #endif
 154
 155 #endif /* !defined(__LINKER__) */
 156 #endif /* defined _ASM_UBICOM32_IP5000_ASM_H */