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| 1 | jermar | 1 | /* |
| 2 | * Copyright (C) 2001-2004 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 __TLB_H__ |
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| 30 | #define __TLB_H__ |
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| 31 | |||
| 396 | jermar | 32 | #include <arch/mm/asid.h> |
| 597 | jermar | 33 | #include <arch/types.h> |
| 727 | jermar | 34 | #include <typedefs.h> |
| 396 | jermar | 35 | |
| 1002 | jermar | 36 | /** |
| 37 | * Number of TLB shootdown messages that can be queued in processor |
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| 38 | * tlb_messages queue. |
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| 39 | */ |
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| 40 | #define TLB_MESSAGE_QUEUE_LEN 10 |
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| 41 | |||
| 597 | jermar | 42 | /** Type of TLB shootdown message. */ |
| 43 | enum tlb_invalidate_type { |
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| 44 | TLB_INVL_INVALID = 0, /**< Invalid type. */ |
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| 45 | TLB_INVL_ALL, /**< Invalidate all entries in TLB. */ |
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| 46 | TLB_INVL_ASID, /**< Invalidate all entries belonging to one address space. */ |
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| 727 | jermar | 47 | TLB_INVL_PAGES /**< Invalidate specified page range belonging to one address space. */ |
| 597 | jermar | 48 | }; |
| 49 | typedef enum tlb_invalidate_type tlb_invalidate_type_t; |
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| 50 | |||
| 51 | /** TLB shootdown message. */ |
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| 52 | struct tlb_shootdown_msg { |
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| 53 | tlb_invalidate_type_t type; /**< Message type. */ |
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| 54 | asid_t asid; /**< Address space identifier. */ |
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| 55 | __address page; /**< Page address. */ |
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| 1002 | jermar | 56 | count_t count; /**< Number of pages to invalidate. */ |
| 597 | jermar | 57 | }; |
| 58 | typedef struct tlb_shootdown_msg tlb_shootdown_msg_t; |
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| 59 | |||
| 727 | jermar | 60 | extern void tlb_init(void); |
| 61 | |||
| 62 | #ifdef CONFIG_SMP |
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| 1002 | jermar | 63 | extern void tlb_shootdown_start(tlb_invalidate_type_t type, asid_t asid, __address page, count_t count); |
| 727 | jermar | 64 | extern void tlb_shootdown_finalize(void); |
| 65 | extern void tlb_shootdown_ipi_recv(void); |
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| 66 | #else |
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| 67 | # define tlb_shootdown_start(w, x, y, z) |
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| 68 | # define tlb_shootdown_finalize() |
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| 69 | # define tlb_shootdown_ipi_recv() |
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| 70 | #endif /* CONFIG_SMP */ |
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| 71 | |||
| 72 | |||
| 5 | jermar | 73 | /* Export TLB interface that each architecture must implement. */ |
| 569 | jermar | 74 | extern void tlb_arch_init(void); |
| 75 | extern void tlb_print(void); |
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| 6 | jermar | 76 | extern void tlb_shootdown_ipi_send(void); |
| 1 | jermar | 77 | |
| 597 | jermar | 78 | extern void tlb_invalidate_all(void); |
| 79 | extern void tlb_invalidate_asid(asid_t asid); |
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| 727 | jermar | 80 | extern void tlb_invalidate_pages(asid_t asid, __address page, count_t cnt); |
| 1 | jermar | 81 | #endif |