prom_mmu.c revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1991-1994, by Sun Microsystems, Inc.
* All rights reserved.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* This file contains platform-dependent MMU support routines,
* suitable for mmu methods with 2-cell physical addresses.
* Use of these routines makes the caller platform-dependent,
* since the caller assumes knowledge of the physical layout of
* the machines address space. Generic programs should use the
* standard client interface memory allocators.
*/
#include <sys/promimpl.h>
prom_mmu_ihandle(void)
{
return (immu);
return (immu);
}
/*
* prom_map_phys:
*
* Create an MMU mapping for a given physical address to a given virtual
* address. The given resources are assumed to be owned by the caller,
* and are *not* removed from any free lists.
*
* This routine is suitable for mapping a 2-cell physical address.
*/
int
{
int rv;
return (-1);
if (rv != 0)
return (-1);
return (-1);
return (0);
}
void
{
}
/*
* Allocate aligned or unaligned virtual address space, unmapped.
*/
{
int rv;
return ((caddr_t)-1);
if (align == 0)
align = 1;
if (rv != 0)
return ((caddr_t)-1);
return ((caddr_t)-1);
}
/*
* Claim a region of virtual address space, unmapped.
*/
{
int rv;
return ((caddr_t)-1);
if (rv != 0)
return ((caddr_t)-1);
return ((caddr_t)-1);
}
/*
* Free virtual address resource (no unmapping is done).
*/
void
{
return;
(void) p1275_cif_handler(&ci);
}
/*
* Un-map virtual address. Does not free underlying resources.
*/
void
{
return;
(void) p1275_cif_handler(&ci);
}
/*
* Translate virtual address to physical address.
* Returns 0: Success; Non-zero: failure.
* Returns *phys_hi, *phys_lo and *mode only if successful.
*/
int
{
int rv;
*valid = 0;
return (-1);
return (-1);
return (-1);
return (0);
/* Res4: sr3: phys-hi ... Res5: sr4: phys-lo */
return (0);
}
/*
* prom_itlb_load, prom_dtlb_load:
*
* Manage the Spitfire TLB. Returns 0 if successful, -1 otherwise.
* Flush the address in context zero mapped by tte_data and virt,
* and load the {i,d} tlb entry index with tte_data and virt.
*/
int
{
int rv;
return (-1);
if (rv != 0)
return (-1);
return (-1);
return (0);
}
int
{
int rv;
return (-1);
if (rv != 0)
return (-1);
return (-1);
return (0);
}