92 lines
2.7 KiB
C
92 lines
2.7 KiB
C
/* $NetBSD: cache.c,v 1.2 2007/10/30 16:38:54 tsutsui Exp $ */
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/*
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* Copyright 2001 Wasabi Systems, Inc.
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* All rights reserved.
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*
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* Written by Jason R. Thorpe for Wasabi Systems, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed for the NetBSD Project by
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* Wasabi Systems, Inc.
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* 4. The name of Wasabi Systems, Inc. may not be used to endorse
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* or promote products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <lib/libsa/stand.h>
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#include <lib/libkern/libkern.h>
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#include <mips/cpuregs.h>
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#include <mips/cache_r4k.h>
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#include "boot.h"
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#define round_line(x) (((x) + (CACHELINESIZE - 1)) & ~(CACHELINESIZE - 1))
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#define trunc_line(x) ((x) & ~(CACHELINESIZE - 1))
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__asm(".set mips3");
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void
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pdcache_inv(uint32_t va, u_int size)
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{
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uint32_t eva;
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eva = round_line(va + size);
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va = trunc_line(va);
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while (va < eva) {
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cache_op_r4k_line(va, CACHE_R4K_D|CACHEOP_R4K_HIT_INV);
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va += CACHELINESIZE;
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}
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}
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void
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pdcache_wb(uint32_t va, u_int size)
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{
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uint32_t eva;
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eva = round_line(va + size);
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va = trunc_line(va);
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while (va < eva) {
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cache_op_r4k_line(va, CACHE_R4K_D|CACHEOP_R4K_HIT_WB);
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va += CACHELINESIZE;
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}
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}
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void
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pdcache_wbinv(uint32_t va, u_int size)
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{
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uint32_t eva;
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eva = round_line(va + size);
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va = trunc_line(va);
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while (va < eva) {
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cache_op_r4k_line(va, CACHE_R4K_D|CACHEOP_R4K_HIT_WB_INV);
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va += CACHELINESIZE;
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}
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}
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