tte.h

Go to the documentation of this file.

/*
 * Copyright (c) 2005 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.
 */

#ifndef KERN_sparc64_sun4u_TTE_H_
#define KERN_sparc64_sun4u_TTE_H_

#define TTE_G       (1 << 0)
#define TTE_W       (1 << 1)
#define TTE_P       (1 << 2)
#define TTE_E       (1 << 3)
#define TTE_CV      (1 << 4)
#define TTE_CP      (1 << 5)
#define TTE_L       (1 << 6)

#define TTE_V_SHIFT 63
#define TTE_SIZE_SHIFT  61

#ifndef __ASM__

#include <arch/types.h>

/* TTE tag's VA_tag field contains bits <63:VA_TAG_PAGE_SHIFT> of the VA */
#define VA_TAG_PAGE_SHIFT   22

union tte_tag {
    uint64_t value;
    struct {
        unsigned g : 1;     
        unsigned : 2;       
        unsigned context : 13;  
        unsigned : 6;       
        uint64_t va_tag : 42;   
    } __attribute__ ((packed));
};

typedef union tte_tag tte_tag_t;

union tte_data {
    uint64_t value;
    struct {
        unsigned v : 1;     
        unsigned size : 2;  
        unsigned nfo : 1;   
        unsigned ie : 1;    
        unsigned soft2 : 9; 
#if defined (US)
        unsigned diag : 9;  
        unsigned pfn : 28;  
#elif defined (US3)
        unsigned : 7;       
        unsigned pfn : 30;  
#endif
        unsigned soft : 6;  
        unsigned l : 1;     
        unsigned cp : 1;    
        unsigned cv : 1;    
        unsigned e : 1;     
        unsigned p : 1;     
        unsigned w : 1;     
        unsigned g : 1;     
    } __attribute__ ((packed));
};

typedef union tte_data tte_data_t;

#endif /* !def __ASM__ */

#endif