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| Rev | Author | Line No. | Line |
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| 391 | jermar | 1 | /* |
| 2 | * Copyright (C) 2005 Jakub Jermar |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | #ifndef __ia64_ASID_H__ |
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| 30 | #define __ia64_ASID_H__ |
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| 31 | |||
| 869 | vana | 32 | #ifndef __ASM__ |
| 33 | |||
| 727 | jermar | 34 | #include <arch/types.h> |
| 391 | jermar | 35 | |
| 753 | jermar | 36 | typedef __u16 asid_t; |
| 901 | jermar | 37 | typedef __u32 rid_t; |
| 391 | jermar | 38 | |
| 901 | jermar | 39 | #endif /* __ASM__ */ |
| 40 | |||
| 741 | jermar | 41 | /** |
| 753 | jermar | 42 | * Number of ia64 RIDs (Region Identifiers) per kernel ASID. |
| 43 | * Note that some architectures may support more bits, |
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| 44 | * but those extra bits are not used by the kernel. |
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| 741 | jermar | 45 | */ |
| 740 | jermar | 46 | #define RIDS_PER_ASID 7 |
| 901 | jermar | 47 | |
| 753 | jermar | 48 | #define RID_MAX 262143 /* 2^18 - 1 */ |
| 901 | jermar | 49 | #define RID_KERNEL 0 |
| 50 | #define RID_INVALID 1 |
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| 740 | jermar | 51 | |
| 901 | jermar | 52 | #define ASID2RID(asid, vrn) (((asid)>RIDS_PER_ASID)?(((asid)*RIDS_PER_ASID)+(vrn)):(asid)) |
| 749 | jermar | 53 | #define RID2ASID(rid) ((rid)/RIDS_PER_ASID) |
| 54 | |||
| 753 | jermar | 55 | #define ASID_MAX_ARCH (RID_MAX/RIDS_PER_ASID) |
| 727 | jermar | 56 | |
| 391 | jermar | 57 | #endif |