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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/arch/frv/lib/cache.S
10817 views
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/* cache.S: cache management routines

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 *

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 * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.

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 * Written by David Howells ([email protected])

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 *

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 * This program is free software; you can redistribute it and/or

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 * modify it under the terms of the GNU General Public License

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 * as published by the Free Software Foundation; either version

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 * 2 of the License, or (at your option) any later version.

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 */

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#include <asm/spr-regs.h>

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#include <asm/cache.h>

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        .text

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        .p2align	4

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###############################################################################

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#

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# Write back a range of dcache

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# - void frv_dcache_writeback(unsigned long start [GR8], unsigned long size [GR9])

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#

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###############################################################################

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        .globl		frv_dcache_writeback

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        .type		frv_dcache_writeback,@function

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frv_dcache_writeback:

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	andi		gr8,~(L1_CACHE_BYTES-1),gr8

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2:	dcf		@(gr8,gr0)

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	addi		gr8,#L1_CACHE_BYTES,gr8

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	cmp		gr9,gr8,icc0

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	bhi		icc0,#2,2b

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	membar

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	bralr

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	.size		frv_dcache_writeback, .-frv_dcache_writeback

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##############################################################################

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#

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# Invalidate a range of dcache and icache

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# - void frv_cache_invalidate(unsigned long start [GR8], unsigned long end [GR9]);

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#

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###############################################################################

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        .globl		frv_cache_invalidate

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        .type		frv_cache_invalidate,@function

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frv_cache_invalidate:

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	andi		gr8,~(L1_CACHE_BYTES-1),gr8

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2:	dci		@(gr8,gr0)

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	ici		@(gr8,gr0)

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	addi		gr8,#L1_CACHE_BYTES,gr8

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	cmp		gr9,gr8,icc0

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	bhi		icc0,#2,2b

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	membar

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	bralr

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	.size		frv_cache_invalidate, .-frv_cache_invalidate

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##############################################################################

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#

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# Invalidate a range of icache

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# - void frv_icache_invalidate(unsigned long start [GR8], unsigned long end [GR9]);

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#

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###############################################################################

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        .globl		frv_icache_invalidate

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        .type		frv_icache_invalidate,@function

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frv_icache_invalidate:

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	andi		gr8,~(L1_CACHE_BYTES-1),gr8

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2:	ici		@(gr8,gr0)

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	addi		gr8,#L1_CACHE_BYTES,gr8

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	cmp		gr9,gr8,icc0

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	bhi		icc0,#2,2b

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	membar

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	bralr

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	.size		frv_icache_invalidate, .-frv_icache_invalidate

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###############################################################################

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#

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# Write back and invalidate a range of dcache and icache

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# - void frv_cache_wback_inv(unsigned long start [GR8], unsigned long end [GR9])

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#

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###############################################################################

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        .globl		frv_cache_wback_inv

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        .type		frv_cache_wback_inv,@function

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frv_cache_wback_inv:

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	andi		gr8,~(L1_CACHE_BYTES-1),gr8

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2:	dcf		@(gr8,gr0)

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	ici		@(gr8,gr0)

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	addi		gr8,#L1_CACHE_BYTES,gr8

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	cmp		gr9,gr8,icc0

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	bhi		icc0,#2,2b

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	membar

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	bralr

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	.size		frv_cache_wback_inv, .-frv_cache_wback_inv

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