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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 <synch/spinlock.h> |
|
- | 31 | #include <typedefs.h> |
|
- | 32 | #include <arch/atomic.h> |
|
- | 33 | #include <config.h> |
|
30 | 34 | ||
- | 35 | #ifdef __SMP__ |
|
- | 36 | static spinlock_t tlblock; |
|
- | 37 | static volatile int tlb_shutdown_cnt; |
|
- | 38 | ||
- | 39 | void tlb_init(void) |
|
- | 40 | { |
|
- | 41 | spinlock_initialize(&tlblock); |
|
- | 42 | tlb_shutdown_cnt = 0; |
|
- | 43 | } |
|
- | 44 | ||
- | 45 | /* must be called with interrupts disabled */ |
|
31 | void tlb_shutdown(void) |
46 | void tlb_shutdown_start(void) |
- | 47 | { |
|
- | 48 | spinlock_lock(&tlblock); |
|
- | 49 | tlb_shutdown_ipi_send(); |
|
- | 50 | ||
- | 51 | while (tlb_shutdown_cnt < config.cpu_active - 1) |
|
- | 52 | ; |
|
- | 53 | ||
- | 54 | tlb_shutdown_cnt = 0; |
|
- | 55 | } |
|
- | 56 | ||
- | 57 | void tlb_shutdown_finalize(void) |
|
- | 58 | { |
|
- | 59 | spinlock_unlock(&tlblock); |
|
- | 60 | } |
|
- | 61 | ||
- | 62 | void tlb_shutdown_ipi_recv(void) |
|
32 | { |
63 | { |
33 | /* TODO: implement tlb_shutdown */ |
64 | atomic_inc((int *) &tlb_shutdown_cnt); |
- | 65 | spinlock_lock(&tlblock); |
|
- | 66 | spinlock_unlock(&tlblock); |
|
- | 67 | tlb_invalidate(0); /* TODO: use valid ASID */ |
|
34 | } |
68 | } |
- | 69 | #endif /* __SMP__ */ |
|
35 | 70 |