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| 1 | /* |
1 | /* |
| 2 | * Copyright (C) 2005 Jakub Jermar |
2 | * Copyright (C) 2005 Jakub Jermar |
| 3 | * All rights reserved. |
3 | * All rights reserved. |
| 4 | * |
4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
7 | * are met: |
| 8 | * |
8 | * |
| 9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
| 13 | * documentation and/or other materials provided with the distribution. |
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 |
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. |
15 | * derived from this software without specific prior written permission. |
| 16 | * |
16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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 |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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 |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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 |
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. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
27 | */ |
| 28 | 28 | ||
| 29 | /** @addtogroup ia64mm |
29 | /** @addtogroup ia64mm |
| 30 | * @{ |
30 | * @{ |
| 31 | */ |
31 | */ |
| 32 | /** @file |
32 | /** @file |
| 33 | */ |
33 | */ |
| 34 | 34 | ||
| 35 | #ifndef __ia64_ASID_H__ |
35 | #ifndef __ia64_ASID_H__ |
| 36 | #define __ia64_ASID_H__ |
36 | #define __ia64_ASID_H__ |
| 37 | 37 | ||
| 38 | #ifndef __ASM__ |
38 | #ifndef __ASM__ |
| 39 | 39 | ||
| 40 | #include <arch/types.h> |
40 | #include <arch/types.h> |
| 41 | 41 | ||
| 42 | typedef __u16 asid_t; |
42 | typedef uint16_t asid_t; |
| 43 | typedef __u32 rid_t; |
43 | typedef uint32_t rid_t; |
| 44 | 44 | ||
| 45 | #endif /* __ASM__ */ |
45 | #endif /* __ASM__ */ |
| 46 | 46 | ||
| 47 | /** |
47 | /** |
| 48 | * Number of ia64 RIDs (Region Identifiers) per kernel ASID. |
48 | * Number of ia64 RIDs (Region Identifiers) per kernel ASID. |
| 49 | * Note that some architectures may support more bits, |
49 | * Note that some architectures may support more bits, |
| 50 | * but those extra bits are not used by the kernel. |
50 | * but those extra bits are not used by the kernel. |
| 51 | */ |
51 | */ |
| 52 | #define RIDS_PER_ASID 7 |
52 | #define RIDS_PER_ASID 7 |
| 53 | 53 | ||
| 54 | #define RID_MAX 262143 /* 2^18 - 1 */ |
54 | #define RID_MAX 262143 /* 2^18 - 1 */ |
| 55 | #define RID_KERNEL 0 |
55 | #define RID_KERNEL 0 |
| 56 | #define RID_INVALID 1 |
56 | #define RID_INVALID 1 |
| 57 | 57 | ||
| 58 | #define ASID2RID(asid, vrn) (((asid)>RIDS_PER_ASID)?(((asid)*RIDS_PER_ASID)+(vrn)):(asid)) |
58 | #define ASID2RID(asid, vrn) (((asid)>RIDS_PER_ASID)?(((asid)*RIDS_PER_ASID)+(vrn)):(asid)) |
| 59 | #define RID2ASID(rid) ((rid)/RIDS_PER_ASID) |
59 | #define RID2ASID(rid) ((rid)/RIDS_PER_ASID) |
| 60 | 60 | ||
| 61 | #define ASID_MAX_ARCH (RID_MAX/RIDS_PER_ASID) |
61 | #define ASID_MAX_ARCH (RID_MAX/RIDS_PER_ASID) |
| 62 | 62 | ||
| 63 | #endif |
63 | #endif |
| 64 | 64 | ||
| 65 | /** @} |
65 | /** @} |
| 66 | */ |
66 | */ |
| 67 | 67 | ||
| 68 | 68 | ||