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1 | /* |
1 | /* |
2 | * Copyright (C) 2006 Jakub Jermar |
2 | * Copyright (C) 2006 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/asid.h> |
|
- | 31 | #include <arch/mm/page.h> |
|
30 | #include <genarch/mm/as_ht.h> |
32 | #include <genarch/mm/as_ht.h> |
31 | #include <genarch/mm/asid_fifo.h> |
33 | #include <genarch/mm/asid_fifo.h> |
- | 34 | #include <mm/asid.h> |
|
- | 35 | #include <arch.h> |
|
- | 36 | #include <arch/barrier.h> |
|
- | 37 | #include <synch/spinlock.h> |
|
32 | 38 | ||
33 | /** Architecture dependent address space init. */ |
39 | /** Architecture dependent address space init. */ |
34 | void as_arch_init(void) |
40 | void as_arch_init(void) |
35 | { |
41 | { |
36 | as_operations = &as_ht_operations; |
42 | as_operations = &as_ht_operations; |
37 | asid_fifo_init(); |
43 | asid_fifo_init(); |
38 | } |
44 | } |
- | 45 | ||
- | 46 | /** Prepare registers for switching to another address space. |
|
- | 47 | * |
|
- | 48 | * @param as Address space. |
|
- | 49 | */ |
|
- | 50 | void as_install_arch(as_t *as) |
|
- | 51 | { |
|
- | 52 | ipl_t ipl; |
|
- | 53 | region_register rr; |
|
- | 54 | int i; |
|
- | 55 | ||
- | 56 | ipl = interrupts_disable(); |
|
- | 57 | spinlock_lock(&as->lock); |
|
- | 58 | ||
- | 59 | ASSERT(as->asid != ASID_INVALID); |
|
- | 60 | ||
- | 61 | /* |
|
- | 62 | * Load respective ASID (7 consecutive RIDs) to |
|
- | 63 | * region registers. |
|
- | 64 | */ |
|
- | 65 | for (i = 0; i < REGION_REGISTERS; i++) { |
|
- | 66 | if (i == VRN_KERNEL) |
|
- | 67 | continue; |
|
- | 68 | ||
- | 69 | rr.word = rr_read(i); |
|
- | 70 | rr.map.ve = false; /* disable VHPT walker */ |
|
- | 71 | rr.map.rid = ASID2RID(as->asid, i); |
|
- | 72 | rr.map.ps = PAGE_WIDTH; |
|
- | 73 | rr_write(i, rr.word); |
|
- | 74 | } |
|
- | 75 | srlz_d(); |
|
- | 76 | srlz_i(); |
|
- | 77 | ||
- | 78 | spinlock_unlock(&as->lock); |
|
- | 79 | interrupts_restore(ipl); |
|
- | 80 | } |
|
39 | 81 |