Subversion Repositories HelenOS

Rev

Rev 740 | Rev 747 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
391 jermar 1
/*
2
 * Copyright (C) 2005 Jakub Jermar
3
 * All rights reserved.
4
 *
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
7
 * are met:
8
 *
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
13
 *   documentation and/or other materials provided with the distribution.
14
 * - The name of the author may not be used to endorse or promote products
15
 *   derived from this software without specific prior written permission.
16
 *
17
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
28
 
29
#ifndef __ia64_ASID_H__
30
#define __ia64_ASID_H__
31
 
727 jermar 32
#include <arch/types.h>
391 jermar 33
 
727 jermar 34
typedef __u32 asid_t;
391 jermar 35
 
741 jermar 36
/**
37
 * This macro eliminates the stealing branch of asid_get().
38
 */
39
#define ASID_STEALING_ENABLED   0
40
 
740 jermar 41
/** Number of ia64 RIDs (Region Identifiers) per kernel ASID. */
42
#define RIDS_PER_ASID       7
43
#define RID_OVERFLOW        16777216    /* 2^24 */
44
 
45
/**
741 jermar 46
 * This macro is needed only to compile the kernel.
47
 * On ia64, its value is ignored.
727 jermar 48
 */
741 jermar 49
#define ASID_MAX_ARCH       0
727 jermar 50
 
740 jermar 51
/**
52
 * Value used to recognize the situation when all ASIDs were already allocated.
53
 */
54
#define ASID_OVERFLOW       (RID_OVERFLOW/RIDS_PER_ASID)
55
 
730 jermar 56
#define asid_put_arch(x)
57
 
391 jermar 58
#endif