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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 | #include <mm/tlb.h> |
29 | #include <mm/tlb.h> |
30 | #include <arch/mm/tlb.h> |
30 | #include <arch/mm/tlb.h> |
31 | #include <smp/ipi.h> |
31 | #include <smp/ipi.h> |
32 | #include <synch/spinlock.h> |
32 | #include <synch/spinlock.h> |
33 | #include <typedefs.h> |
33 | #include <typedefs.h> |
34 | #include <arch/atomic.h> |
34 | #include <arch/atomic.h> |
35 | #include <arch/interrupt.h> |
35 | #include <arch/interrupt.h> |
36 | #include <config.h> |
36 | #include <config.h> |
37 | #include <arch.h> |
37 | #include <arch.h> |
38 | #include <panic.h> |
38 | #include <panic.h> |
39 | 39 | ||
40 | SPINLOCK_INITIALIZE(tlblock); |
40 | SPINLOCK_INITIALIZE(tlblock); |
41 | 41 | ||
42 | void tlb_init(void) |
42 | void tlb_init(void) |
43 | { |
43 | { |
44 | tlb_arch_init(); |
44 | tlb_arch_init(); |
45 | } |
45 | } |
46 | 46 | ||
47 | #ifdef CONFIG_SMP |
47 | #ifdef CONFIG_SMP |
48 | /* must be called with interrupts disabled */ |
48 | /* must be called with interrupts disabled */ |
49 | void tlb_shootdown_start(tlb_invalidate_type_t type, asid_t asid, __address page, count_t cnt) |
49 | void tlb_shootdown_start(tlb_invalidate_type_t type, asid_t asid, __address page, count_t cnt) |
50 | { |
50 | { |
51 | int i; |
51 | int i; |
52 | 52 | ||
53 | CPU->tlb_active = 0; |
53 | CPU->tlb_active = 0; |
54 | spinlock_lock(&tlblock); |
54 | spinlock_lock(&tlblock); |
55 | 55 | ||
56 | /* |
56 | /* |
57 | * TODO: assemble shootdown message. |
57 | * TODO: wrap parameters into a message and |
- | 58 | * dispatch it to all CPUs excluding this one. |
|
58 | */ |
59 | */ |
- | 60 | ||
59 | tlb_shootdown_ipi_send(); |
61 | tlb_shootdown_ipi_send(); |
60 | 62 | ||
61 | switch (type) { |
- | |
62 | case TLB_INVL_ALL: |
- | |
63 | tlb_invalidate_all(); |
- | |
64 | break; |
- | |
65 | case TLB_INVL_ASID: |
- | |
66 | tlb_invalidate_asid(asid); |
- | |
67 | break; |
- | |
68 | case TLB_INVL_PAGES: |
- | |
69 | tlb_invalidate_pages(asid, page, cnt); |
- | |
70 | break; |
- | |
71 | default: |
- | |
72 | panic("unknown tlb_invalidate_type_t value: %d\n", type); |
- | |
73 | break; |
- | |
74 | } |
- | |
75 | - | ||
76 | busy_wait: |
63 | busy_wait: |
77 | for (i = 0; i<config.cpu_count; i++) |
64 | for (i = 0; i<config.cpu_count; i++) |
78 | if (cpus[i].tlb_active) |
65 | if (cpus[i].tlb_active) |
79 | goto busy_wait; |
66 | goto busy_wait; |
80 | } |
67 | } |
81 | 68 | ||
82 | void tlb_shootdown_finalize(void) |
69 | void tlb_shootdown_finalize(void) |
83 | { |
70 | { |
84 | spinlock_unlock(&tlblock); |
71 | spinlock_unlock(&tlblock); |
85 | CPU->tlb_active = 1; |
72 | CPU->tlb_active = 1; |
86 | } |
73 | } |
87 | 74 | ||
88 | void tlb_shootdown_ipi_send(void) |
75 | void tlb_shootdown_ipi_send(void) |
89 | { |
76 | { |
90 | ipi_broadcast(VECTOR_TLB_SHOOTDOWN_IPI); |
77 | ipi_broadcast(VECTOR_TLB_SHOOTDOWN_IPI); |
91 | } |
78 | } |
92 | 79 | ||
93 | void tlb_shootdown_ipi_recv(void) |
80 | void tlb_shootdown_ipi_recv(void) |
94 | { |
81 | { |
95 | CPU->tlb_active = 0; |
82 | CPU->tlb_active = 0; |
96 | spinlock_lock(&tlblock); |
83 | spinlock_lock(&tlblock); |
97 | spinlock_unlock(&tlblock); |
84 | spinlock_unlock(&tlblock); |
98 | tlb_invalidate_all(); /* TODO: use valid ASID */ |
85 | tlb_invalidate_all(); /* TODO: be more finer-grained in what to invalidate */ |
99 | CPU->tlb_active = 1; |
86 | CPU->tlb_active = 1; |
100 | } |
87 | } |
101 | #endif /* CONFIG_SMP */ |
88 | #endif /* CONFIG_SMP */ |
102 | 89 |