HelenOS Kernel (sparc64): kernel/arch/sparc64/include/mm/tte.h Source File

00001 /*
00002  * Copyright (C) 2005 Jakub Jermar
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  *
00009  * - Redistributions of source code must retain the above copyright
00010  *   notice, this list of conditions and the following disclaimer.
00011  * - Redistributions in binary form must reproduce the above copyright
00012  *   notice, this list of conditions and the following disclaimer in the
00013  *   documentation and/or other materials provided with the distribution.
00014  * - The name of the author may not be used to endorse or promote products
00015  *   derived from this software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
00018  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00019  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
00020  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
00021  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
00022  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
00023  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
00024  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00025  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
00026  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00027  */
00028 
00035 #ifndef __sparc64_TTE_H__
00036 #define __sparc64_TTE_H__
00037 
00038 #include <arch/types.h>
00039 
00041 union tte_tag {
00042         __u64 value;
00043         struct {
00044                 unsigned g : 1;         
00045                 unsigned : 2;           
00046                 unsigned context : 13;  
00047                 unsigned : 6;           
00048                 __u64 va_tag : 42;      
00049         } __attribute__ ((packed));
00050 };
00051 
00052 typedef union tte_tag tte_tag_t;
00053 
00055 union tte_data {
00056         __u64 value;
00057         struct {
00058                 unsigned v : 1;         
00059                 unsigned size : 2;      
00060                 unsigned nfo : 1;       
00061                 unsigned ie : 1;        
00062                 unsigned soft2 : 9;     
00063                 unsigned diag : 9;      
00064                 unsigned pfn : 28;      
00065                 unsigned soft : 6;      
00066                 unsigned l : 1;         
00067                 unsigned cp : 1;        
00068                 unsigned cv : 1;        
00069                 unsigned e : 1;         
00070                 unsigned p : 1;         
00071                 unsigned w : 1;         
00072                 unsigned g : 1;         
00073         } __attribute__ ((packed));
00074 };
00075 
00076 typedef union tte_data tte_data_t;
00077 
00078 #endif
00079