/* * include/asm-xtensa/cacheasm.h * * This file is subject to the terms and conditions of the GNU General Public * License.  See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 2006 Tensilica Inc. */ #include <asm/cache.h>#include <asm/asmmacro.h>#include <linux/stringify.h> /* * Define cache functions as macros here so that they can be used * by the kernel and boot loader. We should consider moving them to a * library that can be linked by both. * * Locking * *   ___unlock_dcache_all *   ___unlock_icache_all * * Flush and invaldating * *   ___flush_invalidate_dcache_{all|range|page} *   ___flush_dcache_{all|range|page} *   ___invalidate_dcache_{all|range|page} *   ___invalidate_icache_{all|range|page} * */  	.macro	__loop_cache_unroll ar at insn size line_width max_immed 	.if	(1 << (\line_width)) > (\max_immed)	.set	_reps, 1	.elseif	(2 << (\line_width)) > (\max_immed)	.set	_reps, 2	.else	.set	_reps, 4	.endif 	__loopi	\ar, \at, \size, (_reps << (\line_width))	.set	_index, 0	.rep	_reps	\insn	\ar, _index << (\line_width)	.set	_index, _index + 1	.endr	__endla	\ar, \at, _reps << (\line_width) 	.endm  	.macro	__loop_cache_all ar at insn size line_width max_immed 	movi	\ar, 0	__loop_cache_unroll \ar, \at, \insn, \size, \line_width, \max_immed 	.endm  	.macro	__loop_cache_range ar as at insn line_width 	extui	\at, \ar, 0, \line_width	add	\as, \as, \at 	__loops	\ar, \as, \at, \line_width	\insn	\ar, 0	__endla	\ar, \at, (1 << (\line_width)) 	.endm  	.macro	__loop_cache_page ar at insn line_width max_immed 	__loop_cache_unroll \ar, \at, \insn, PAGE_SIZE, \line_width, \max_immed 	.endm  	.macro	___unlock_dcache_all ar at #if XCHAL_DCACHE_LINE_LOCKABLE && XCHAL_DCACHE_SIZE	__loop_cache_all \ar \at diu XCHAL_DCACHE_SIZE \		XCHAL_DCACHE_LINEWIDTH 240#endif 	.endm  	.macro	___unlock_icache_all ar at #if XCHAL_ICACHE_LINE_LOCKABLE && XCHAL_ICACHE_SIZE	__loop_cache_all \ar \at iiu XCHAL_ICACHE_SIZE \		XCHAL_ICACHE_LINEWIDTH 240#endif 	.endm  	.macro	___flush_invalidate_dcache_all ar at #if XCHAL_DCACHE_SIZE	__loop_cache_all \ar \at diwbi XCHAL_DCACHE_SIZE \		XCHAL_DCACHE_LINEWIDTH 240#endif 	.endm  	.macro	___flush_dcache_all ar at #if XCHAL_DCACHE_SIZE	__loop_cache_all \ar \at diwb XCHAL_DCACHE_SIZE \		XCHAL_DCACHE_LINEWIDTH 240#endif 	.endm  	.macro	___invalidate_dcache_all ar at #if XCHAL_DCACHE_SIZE	__loop_cache_all \ar \at dii XCHAL_DCACHE_SIZE \			 XCHAL_DCACHE_LINEWIDTH 1020#endif 	.endm  	.macro	___invalidate_icache_all ar at #if XCHAL_ICACHE_SIZE	__loop_cache_all \ar \at iii XCHAL_ICACHE_SIZE \			 XCHAL_ICACHE_LINEWIDTH 1020#endif 	.endm   	.macro	___flush_invalidate_dcache_range ar as at #if XCHAL_DCACHE_SIZE	__loop_cache_range \ar \as \at dhwbi XCHAL_DCACHE_LINEWIDTH#endif 	.endm  	.macro	___flush_dcache_range ar as at #if XCHAL_DCACHE_SIZE	__loop_cache_range \ar \as \at dhwb XCHAL_DCACHE_LINEWIDTH#endif 	.endm  	.macro	___invalidate_dcache_range ar as at #if XCHAL_DCACHE_SIZE	__loop_cache_range \ar \as \at dhi XCHAL_DCACHE_LINEWIDTH#endif 	.endm  	.macro	___invalidate_icache_range ar as at #if XCHAL_ICACHE_SIZE	__loop_cache_range \ar \as \at ihi XCHAL_ICACHE_LINEWIDTH#endif 	.endm   	.macro	___flush_invalidate_dcache_page ar as #if XCHAL_DCACHE_SIZE	__loop_cache_page \ar \as dhwbi XCHAL_DCACHE_LINEWIDTH 1020#endif 	.endm  	.macro ___flush_dcache_page ar as #if XCHAL_DCACHE_SIZE	__loop_cache_page \ar \as dhwb XCHAL_DCACHE_LINEWIDTH 1020#endif 	.endm  	.macro	___invalidate_dcache_page ar as #if XCHAL_DCACHE_SIZE	__loop_cache_page \ar \as dhi XCHAL_DCACHE_LINEWIDTH 1020#endif 	.endm  	.macro	___invalidate_icache_page ar as #if XCHAL_ICACHE_SIZE	__loop_cache_page \ar \as ihi XCHAL_ICACHE_LINEWIDTH 1020#endif 	.endm