hypervisor/src/sample/mmu.c

/*
* ========== Copyright Header Begin ==========================================
*
* Hypervisor Software File: mmu.c
*
* Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved.
*
*  - Do no alter or remove copyright notices
*
*  - Redistribution and use of this software in source and binary forms, with
*    or without modification, are permitted provided that the following
*    conditions are met:
*
*  - Redistribution of source code must retain the above copyright notice,
*    this list of conditions and the following disclaimer.
*
*  - Redistribution 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.
*
*    Neither the name of Sun Microsystems, Inc. or the names of contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
*     This software is provided "AS IS," without a warranty of any kind.
* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
* INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
* MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
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* DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
* ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
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*
* You acknowledge that this software is not designed, licensed or
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*
* ========== Copyright Header End ============================================
*/
/*
 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#pragma ident   "@(#)mmu.c      1.5     07/06/07 SMI"
#include <stdio.h>
#include <stdarg.h>
#include <sys/types.h>
#include <malloc.h>
#include <unistd.h>

#include <sample/sample.h>

extern int hv_mmu_map_addr(uint64_t va, int ctx, uint64_t tte, int flags);
extern int hv_mmu_demap_page(uint64_t va, int ctx, int flags);

/*
 * Sun4V TTE bits
 */
#define NPABITS         (43)
#define TTE_WRITABLE    (1 << 6)
#define TTE_PRIV        (1 << 8)
#define TTE_EFFECT      (1 << 11)
#define TTE_CV          (1 << 9)
#define TTE_CP          (1 << 10)

#define TTE_64K         (0xa)
#define TTE_512K        (0xc)
#define TTE_4M          (0xe)

int
map_addr(uint64_t va, uint64_t ra, uint64_t size, int mmu)
{
        int mode;
        uint64_t sz;
        uint64_t tte;
        if ((int64_t)(ra << (64-NPABITS)) < 0)
                mode = TTE_PRIV|TTE_EFFECT|TTE_WRITABLE;
        else
                mode = TTE_PRIV|TTE_CV|TTE_CP|TTE_WRITABLE;

        switch (size) {
        case K(8):
                sz = 0;
                break;
        case K(64):
                sz = 1ULL;
                break;
        case M(4):
                sz = 3ULL;
                break;
        default:
                printf("Illegal size %x\n", size);
                return (1);
        }
        tte = sz | ra | mode | (1ULL << 63);
#if 0
        printf("mmu map va=%x tte=%x\n", va, tte);
#endif
        return (hv_mmu_map_addr(va, 0, tte, mmu));
}

int
map_iaddr(uint64_t va, uint64_t ra, uint64_t size)
{
        return (map_addr(va, ra, size, 2));
}

int
map_daddr(uint64_t va, uint64_t ra, uint64_t size)
{
        return (map_addr(va, ra, size, 1));
}

int
unmap_addr(uint64_t va, int ctx)
{
        return (hv_mmu_demap_page(va, ctx, 3));
}