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1 | /* |
1 | /* |
2 | * Copyright (C) 2005 Jakub Jermar |
2 | * Copyright (C) 2005 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 <arch/mm/as.h> |
29 | #include <arch/mm/as.h> |
30 | #include <arch/mm/tlb.h> |
30 | #include <arch/mm/tlb.h> |
31 | #include <mm/tlb.h> |
31 | #include <mm/tlb.h> |
32 | #include <mm/as.h> |
32 | #include <mm/as.h> |
33 | #include <arch/cp0.h> |
33 | #include <arch/cp0.h> |
34 | #include <arch.h> |
34 | #include <arch.h> |
35 | 35 | ||
36 | /** Install address space. |
36 | /** Install address space. |
37 | * |
37 | * |
38 | * Install ASID and if necessary, purge TLB. |
38 | * Install ASID. |
39 | * |
39 | * |
40 | * @param as Address space structure. |
40 | * @param as Address space structure. |
41 | */ |
41 | */ |
42 | void as_install_arch(as_t *as) |
42 | void as_install_arch(as_t *as) |
43 | { |
43 | { |
44 | entry_hi_t hi; |
44 | entry_hi_t hi; |
45 | ipl_t ipl; |
45 | ipl_t ipl; |
46 | 46 | ||
47 | /* |
- | |
48 | * If necessary, purge TLB. |
- | |
49 | */ |
- | |
50 | tlb_invalidate_asid(as->asid); /* TODO: do it only if necessary */ |
- | |
51 | - | ||
52 | /* |
47 | /* |
53 | * Install ASID. |
48 | * Install ASID. |
54 | */ |
49 | */ |
55 | hi.value = cp0_entry_hi_read(); |
50 | hi.value = cp0_entry_hi_read(); |
56 | 51 | ||
57 | ipl = interrupts_disable(); |
52 | ipl = interrupts_disable(); |
58 | spinlock_lock(&as->lock); |
53 | spinlock_lock(&as->lock); |
59 | hi.asid = as->asid; |
54 | hi.asid = as->asid; |
60 | cp0_entry_hi_write(hi.value); |
55 | cp0_entry_hi_write(hi.value); |
61 | spinlock_unlock(&as->lock); |
56 | spinlock_unlock(&as->lock); |
62 | interrupts_restore(ipl); |
57 | interrupts_restore(ipl); |
63 | } |
58 | } |
64 | 59 |