/*
* Copyright 2001 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Eduardo Horvath and Simon Burge for Wasabi Systems, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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.
*/
/*-
* Copyright (C) 1995, 1996 Wolfgang Solfrank.
* Copyright (C) 1995, 1996 TooLs GmbH.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by TooLs GmbH.
* 4. The name of TooLs GmbH may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``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 TOOLS GMBH 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.
*/
#ifndef _IBM4XX_PMAP_H_
#define _IBM4XX_PMAP_H_
#ifdef _LOCORE
#error use assym.h instead
#endif
#if defined(_MODULE)
#error this file should not be included by loadable kernel modules
#endif
#include <powerpc/ibm4xx/tlb.h>
#define KERNEL_PID 1 /* TLB PID to use for kernel translation */
/*
* A TTE is a 16KB or greater TLB entry w/size and endianness bits
* stuffed in the (unused) low bits of the PA.
*/
#define TTE_PA_MASK 0xffffc000
#define TTE_RPN_MASK(sz) (~((1 << (10 + 2 * (sz))) - 1))
#define TTE_ENDIAN 0x00002000
#define TTE_SZ_MASK 0x00001c00
#define TTE_SZ_SHIFT 10
/* 2nd level tables map in any bits not mapped by 1st level tables. */
#define STSZ ((0xffffffffU / (PAGE_SIZE * PTSZ)) + 1)
#define STMAP (0xffffffffU)
#define STMSK (~(PTMAP - 1))
#define STIDX(v) ((v) >> (PGSHIFT + 12))
/*
* Extra flags to pass to pmap_enter() -- make sure they don't conflict
* w/PMAP_CANFAIL or PMAP_WIRED
*/
#define PME_NOCACHE 0x1000000
#define PME_WRITETHROUG 0x2000000
/*
* Pmap stuff
*/
struct pmap {
volatile int pm_ctx; /* PID to identify PMAP's entries in TLB */
int pm_refs; /* ref count */
struct pmap_statistics pm_stats; /* pmap statistics */
volatile u_int *pm_ptbl[STSZ]; /* Array of 64 pointers to page tables. */
};
/*
* Alternate mapping hooks for pool pages. Avoids thrashing the TLB.
*
* Note: This won't work if we have more memory than can be direct-mapped
* VA==PA all at once. But pmap_copy_page() and pmap_zero_page() will have
* this problem, too.
*/
#define PMAP_MAP_POOLPAGE(pa) (pa)
#define PMAP_UNMAP_POOLPAGE(pa) (pa)