/*
* Copyright (C) 2006 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* TLB management.
*/
#include <mm/tlb.h>
#include <arch/mm/tlb.h>
/** Invalidate all TLB entries. */
void tlb_invalidate_all(void)
{
/* TODO */
}
/** Invalidate entries belonging to an address space.
*
* @param asid Address space identifier.
*/
void tlb_invalidate_asid(asid_t asid)
{
/* TODO */
}
void tlb_fill_data(__address va,asid_t asid,vhpt_entry_t entry)
{
region_register rr;
if(!(entry.not_present.p)) return;
rr.word=rr_read(VA_REGION(va));
if(rr.map.rid==ASID2RID(asid,VA_REGION(va)))
{
asm
(
"srlz.i;;\n"
"srlz.d;;\n"
"mov r8=psr;;\n"
"and r9=r8,%0;;\n" /*(~PSR_IC_MASK)*/
"mov psr.l=r9;;\n"
"srlz.d;;\n"
"srlz.i;;\n"
"mov cr20=%1\n" /*va*/ /*cr20 == IFA*/
"mov cr21=%2;;\n" /*entry.word[1]*/ /*cr21=ITIR*/
"itc.d %3;;\n" /*entry.word[0]*/
"mov psr.l=r8;;\n"
"srlz.d;;\n"
:
:"r"(~PSR_IC_MASK),"r"(va),"r"(entry.word[1]),"r"(entry.word[0])
:"r8","r9"
);
}
else
{
region_register rr0;
rr0=rr;
rr0.map.rid=ASID2RID(asid,VA_REGION(va));
rr_write(VA_REGION(va),rr0.word);
asm
(
"mov r8=psr;;\n"
"and r9=r8,%0;;\n" /*(~PSR_IC_MASK)*/
"mov psr.l=r9;;\n"
"srlz.d;;\n"
"mov cr20=%1\n" /*va*/ /*cr20 == IFA*/
"mov cr21=%2;;\n" /*entry.word[1]*/ /*cr21=ITIR*/
"itc.d %3;;\n" /*entry.word[0]*/
"mov psr.l=r8;;\n"
"srlz.d;;\n"
:
:"r"(~PSR_IC_MASK),"r"(va),"r"(entry.word[1]),"r"(entry.word[0])
:"r8","r9"
);
rr_write(VA_REGION(va),rr.word);
}
}
void tlb_fill_code(__address va,asid_t asid,vhpt_entry_t entry)
{
region_register rr;
if(!(entry.not_present.p)) return;
rr.word=rr_read(VA_REGION(va));
if(rr.map.rid==ASID2RID(asid,VA_REGION(va)))
{
asm
(
"srlz.i;;\n"
"srlz.d;;\n"
"mov r8=psr;;\n"
"and r9=r8,%0;;\n" /*(~PSR_IC_MASK)*/
"mov psr.l=r9;;\n"
"srlz.d;;\n"
"srlz.i;;\n"
"mov cr20=%1\n" /*va*/ /*cr20 == IFA*/
"mov cr21=%2;;\n" /*entry.word[1]*/ /*cr21=ITIR*/
"itc.i %3;;\n" /*entry.word[0]*/
"mov psr.l=r8;;\n"
"srlz.d;;\n"
:
:"r"(~PSR_IC_MASK),"r"(va),"r"(entry.word[1]),"r"(entry.word[0])
:"r8","r9"
);
}
else
{
region_register rr0;
rr0=rr;
rr0.map.rid=ASID2RID(asid,VA_REGION(va));
rr_write(VA_REGION(va),rr0.word);
asm
(
"mov r8=psr;;\n"
"and r9=r8,%0;;\n" /*(~PSR_IC_MASK)*/
"mov psr.l=r9;;\n"
"srlz.d;;\n"
"mov cr20=%1\n" /*va*/ /*cr20 == IFA*/
"mov cr21=%2;;\n" /*entry.word[1]*/ /*cr21=ITIR*/
"itc.i %3;;\n" /*entry.word[0]*/
"mov psr.l=r8;;\n"
"srlz.d;;\n"
:
:"r"(~PSR_IC_MASK),"r"(va),"r"(entry.word[1]),"r"(entry.word[0])
:"r8","r9"
);
rr_write(VA_REGION(va),rr.word);
}
}