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1 | /* |
1 | /* |
2 | * Copyright (C) 2001-2004 Jakub Jermar |
2 | * Copyright (C) 2001-2004 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 | #ifndef __TLB_H__ |
29 | #ifndef __TLB_H__ |
30 | #define __TLB_H__ |
30 | #define __TLB_H__ |
31 | 31 | ||
32 | #include <arch/mm/asid.h> |
32 | #include <arch/mm/asid.h> |
33 | #include <arch/types.h> |
33 | #include <arch/types.h> |
34 | #include <typedefs.h> |
34 | #include <typedefs.h> |
35 | 35 | ||
- | 36 | /** |
|
- | 37 | * Number of TLB shootdown messages that can be queued in processor |
|
- | 38 | * tlb_messages queue. |
|
- | 39 | */ |
|
- | 40 | #define TLB_MESSAGE_QUEUE_LEN 10 |
|
- | 41 | ||
36 | /** Type of TLB shootdown message. */ |
42 | /** Type of TLB shootdown message. */ |
37 | enum tlb_invalidate_type { |
43 | enum tlb_invalidate_type { |
38 | TLB_INVL_INVALID = 0, /**< Invalid type. */ |
44 | TLB_INVL_INVALID = 0, /**< Invalid type. */ |
39 | TLB_INVL_ALL, /**< Invalidate all entries in TLB. */ |
45 | TLB_INVL_ALL, /**< Invalidate all entries in TLB. */ |
40 | TLB_INVL_ASID, /**< Invalidate all entries belonging to one address space. */ |
46 | TLB_INVL_ASID, /**< Invalidate all entries belonging to one address space. */ |
41 | TLB_INVL_PAGES /**< Invalidate specified page range belonging to one address space. */ |
47 | TLB_INVL_PAGES /**< Invalidate specified page range belonging to one address space. */ |
42 | }; |
48 | }; |
43 | - | ||
44 | typedef enum tlb_invalidate_type tlb_invalidate_type_t; |
49 | typedef enum tlb_invalidate_type tlb_invalidate_type_t; |
45 | 50 | ||
46 | /** TLB shootdown message. */ |
51 | /** TLB shootdown message. */ |
47 | struct tlb_shootdown_msg { |
52 | struct tlb_shootdown_msg { |
48 | tlb_invalidate_type_t type; /**< Message type. */ |
53 | tlb_invalidate_type_t type; /**< Message type. */ |
49 | asid_t asid; /**< Address space identifier. */ |
54 | asid_t asid; /**< Address space identifier. */ |
50 | __address page; /**< Page address. */ |
55 | __address page; /**< Page address. */ |
- | 56 | count_t count; /**< Number of pages to invalidate. */ |
|
51 | }; |
57 | }; |
52 | - | ||
53 | typedef struct tlb_shootdown_msg tlb_shootdown_msg_t; |
58 | typedef struct tlb_shootdown_msg tlb_shootdown_msg_t; |
54 | 59 | ||
55 | extern void tlb_init(void); |
60 | extern void tlb_init(void); |
56 | 61 | ||
57 | #ifdef CONFIG_SMP |
62 | #ifdef CONFIG_SMP |
58 | extern void tlb_shootdown_start(tlb_invalidate_type_t type, asid_t asid, __address page, count_t cnt); |
63 | extern void tlb_shootdown_start(tlb_invalidate_type_t type, asid_t asid, __address page, count_t count); |
59 | extern void tlb_shootdown_finalize(void); |
64 | extern void tlb_shootdown_finalize(void); |
60 | extern void tlb_shootdown_ipi_recv(void); |
65 | extern void tlb_shootdown_ipi_recv(void); |
61 | #else |
66 | #else |
62 | # define tlb_shootdown_start(w, x, y, z) |
67 | # define tlb_shootdown_start(w, x, y, z) |
63 | # define tlb_shootdown_finalize() |
68 | # define tlb_shootdown_finalize() |
64 | # define tlb_shootdown_ipi_recv() |
69 | # define tlb_shootdown_ipi_recv() |
65 | #endif /* CONFIG_SMP */ |
70 | #endif /* CONFIG_SMP */ |
66 | 71 | ||
67 | 72 | ||
68 | /* Export TLB interface that each architecture must implement. */ |
73 | /* Export TLB interface that each architecture must implement. */ |
69 | extern void tlb_arch_init(void); |
74 | extern void tlb_arch_init(void); |
70 | extern void tlb_print(void); |
75 | extern void tlb_print(void); |
71 | extern void tlb_shootdown_ipi_send(void); |
76 | extern void tlb_shootdown_ipi_send(void); |
72 | 77 | ||
73 | extern void tlb_invalidate_all(void); |
78 | extern void tlb_invalidate_all(void); |
74 | extern void tlb_invalidate_asid(asid_t asid); |
79 | extern void tlb_invalidate_asid(asid_t asid); |
75 | extern void tlb_invalidate_pages(asid_t asid, __address page, count_t cnt); |
80 | extern void tlb_invalidate_pages(asid_t asid, __address page, count_t cnt); |
76 | #endif |
81 | #endif |
77 | 82 |