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/*
* arch/ubicom32/include/asm/ip5000-asm.h
* Instruction macros for the IP5000.
*
* (C) Copyright 2009, Ubicom, Inc.
*
* This file is part of the Ubicom32 Linux Kernel Port.
*
* The Ubicom32 Linux Kernel Port is free software: you can redistribute
* it and/or modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, either version 2 of the
* License, or (at your option) any later version.
*
* The Ubicom32 Linux Kernel Port is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with the Ubicom32 Linux Kernel Port. If not,
* see <http://www.gnu.org/licenses/>.
*
* Ubicom32 implementation derived from (with many thanks):
* arch/m68knommu
* arch/blackfin
* arch/parisc
*/
#ifndef _ASM_UBICOM32_IP5000_ASM_H
#define _ASM_UBICOM32_IP5000_ASM_H
#if !defined(__LINKER__)
#if defined(__ASSEMBLY__)
.macro cycles quant
.if (\quant) == 1
nop
.else
.if (((\quant) + 3) / 8) > 0
.rept (((\quant) + 3) / 8)
jmpt.f .+4
.endr
.endif
.if ((((\quant) + 3) % 8) / 4) > 0
jmpt.t .+4
.endif
.endif
.endm
#else
/*
* Same macro as above just in C inline asm
*/
asm (" \n\
.macro cycles quant \n\
.if (\\quant) == 1 \n\
nop \n\
.else \n\
.if (((\\quant) + 3) / 8) > 0 \n\
.rept (((\\quant) + 3) / 8) \n\
jmpt.f .+4 \n\
.endr \n\
.endif \n\
.if ((((\\quant) + 3) % 8) / 4) > 0 \n\
jmpt.t .+4 \n\
.endif \n\
.endif \n\
.endm \n\
");
#endif
#if defined(__ASSEMBLY__)
.macro pipe_flush cyc
cycles 11 - (\cyc)
.endm
#else
/*
* Same macro as above just in C inline asm
*/
asm (" \n\
.macro pipe_flush cyc \n\
cycles 11 - (\\cyc) \n\
.endm \n\
");
#endif
#if defined(__ASSEMBLY__)
.macro setcsr_flush cyc
cycles 5 - (\cyc)
.endm
#else
/*
* Same macro as above just in C inline asm
*/
asm (" \n\
.macro setcsr_flush cyc \n\
cycles 5 - (\\cyc) \n\
.endm \n\
");
#endif
/*
* Macros for prefetch (using miss-aligned memory write)
*/
#if defined(__ASSEMBLY__)
.macro pre_fetch_macro thread_num, Ascratch, Aaddress length
bclr MT_TRAP_EN, MT_TRAP_EN, #(\thread_num)
bset \Ascratch, \Aaddress, #0 ; force a miss-aligned address
jmpt.t .+4 ; delay for both address setup and trap disable
move.4 (\Ascratch), #0
.if (\length > 32)
move.4 32(\Ascratch), #0
.endif
.if (\length > 64)
move.4 64(\Ascratch), #0
.endif
.if (\length > 96)
move.4 96(\Ascratch), #0
.endif
.if (\length > 128)
invalid_instruction ; maximum pre-fetch size is 4 cache lines
.endif
bset MT_TRAP_EN, MT_TRAP_EN, #(\thread_num)
.endm
#else
/*
* Same macro as above just in C inline asm
*/
asm (" \n\
.macro pre_fetch_macro thread_num, Ascratch, Aaddress length \n\
bclr MT_TRAP_EN, MT_TRAP_EN, #(\thread_num) \n\
bset \\Ascratch, \\Aaddress, #0 ; force a miss-aligned address \n\
jmpt.t .+4 ; delay for both address setup and trap disable \n\
move.4 (\\Ascratch), #0 \n\
.if (\\length > 32) \n\
move.4 32(\\Ascratch), #0 \n\
.endif \n\
.if (\\length > 64) \n\
move.4 64(\\Ascratch), #0 \n\
.endif \n\
.if (\\length > 96) \n\
move.4 96(\\Ascratch), #0 \n\
.endif \n\
.if (\\length > 128) \n\
invalid_instruction ; maximum pre-fetch size is 4 cache lines \n\
.endif \n\
bset MT_TRAP_EN, MT_TRAP_EN, #(\\thread_num) \n\
.endm \n\
");
#endif
#endif /* !defined(__LINKER__) */
#endif /* defined _ASM_UBICOM32_IP5000_ASM_H */
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