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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 | /** @addtogroup sparc64proc sparc64 |
29 | /** @addtogroup sparc64proc |
30 | * @ingroup proc |
- | |
31 | * @{ |
30 | * @{ |
32 | */ |
31 | */ |
33 | /** @file |
32 | /** @file |
34 | */ |
33 | */ |
35 | 34 | ||
36 | #include <proc/scheduler.h> |
35 | #include <proc/scheduler.h> |
37 | #include <proc/thread.h> |
36 | #include <proc/thread.h> |
38 | #include <arch.h> |
37 | #include <arch.h> |
39 | #include <arch/mm/tlb.h> |
38 | #include <arch/mm/tlb.h> |
40 | #include <arch/mm/page.h> |
39 | #include <arch/mm/page.h> |
41 | #include <config.h> |
40 | #include <config.h> |
42 | #include <align.h> |
41 | #include <align.h> |
43 | 42 | ||
44 | /** Perform sparc64 specific tasks needed before the new task is run. */ |
43 | /** Perform sparc64 specific tasks needed before the new task is run. */ |
45 | void before_task_runs_arch(void) |
44 | void before_task_runs_arch(void) |
46 | { |
45 | { |
47 | } |
46 | } |
48 | 47 | ||
49 | /** Ensure that thread's kernel stack is locked in TLB. */ |
48 | /** Ensure that thread's kernel stack is locked in TLB. */ |
50 | void before_thread_runs_arch(void) |
49 | void before_thread_runs_arch(void) |
51 | { |
50 | { |
52 | __address base; |
51 | __address base; |
53 | 52 | ||
54 | base = ALIGN_DOWN(config.base, 1<<KERNEL_PAGE_WIDTH); |
53 | base = ALIGN_DOWN(config.base, 1<<KERNEL_PAGE_WIDTH); |
55 | 54 | ||
56 | if ((__address) THREAD->kstack < base || (__address) THREAD->kstack > base + (1<<KERNEL_PAGE_WIDTH)) { |
55 | if ((__address) THREAD->kstack < base || (__address) THREAD->kstack > base + (1<<KERNEL_PAGE_WIDTH)) { |
57 | /* |
56 | /* |
58 | * Kernel stack of this thread is not locked in DTLB. |
57 | * Kernel stack of this thread is not locked in DTLB. |
59 | * First, make sure it is not mapped already. |
58 | * First, make sure it is not mapped already. |
60 | * If not, create a locked mapping for it. |
59 | * If not, create a locked mapping for it. |
61 | */ |
60 | */ |
62 | dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, (__address) THREAD->kstack); |
61 | dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, (__address) THREAD->kstack); |
63 | dtlb_insert_mapping((__address) THREAD->kstack, KA2PA(THREAD->kstack), PAGESIZE_8K, true, true); |
62 | dtlb_insert_mapping((__address) THREAD->kstack, KA2PA(THREAD->kstack), PAGESIZE_8K, true, true); |
64 | } |
63 | } |
65 | } |
64 | } |
66 | 65 | ||
67 | /** Unlock thread's stack from TLB, if necessary. */ |
66 | /** Unlock thread's stack from TLB, if necessary. */ |
68 | void after_thread_ran_arch(void) |
67 | void after_thread_ran_arch(void) |
69 | { |
68 | { |
70 | __address base; |
69 | __address base; |
71 | 70 | ||
72 | base = ALIGN_DOWN(config.base, 1<<KERNEL_PAGE_WIDTH); |
71 | base = ALIGN_DOWN(config.base, 1<<KERNEL_PAGE_WIDTH); |
73 | 72 | ||
74 | if ((__address) THREAD->kstack < base || (__address) THREAD->kstack > base + (1<<KERNEL_PAGE_WIDTH)) { |
73 | if ((__address) THREAD->kstack < base || (__address) THREAD->kstack > base + (1<<KERNEL_PAGE_WIDTH)) { |
75 | /* |
74 | /* |
76 | * Kernel stack of this thread is locked in DTLB. |
75 | * Kernel stack of this thread is locked in DTLB. |
77 | * Destroy the mapping. |
76 | * Destroy the mapping. |
78 | */ |
77 | */ |
79 | dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, (__address) THREAD->kstack); |
78 | dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, (__address) THREAD->kstack); |
80 | } |
79 | } |
81 | } |
80 | } |
82 | 81 | ||
83 | /** @} |
82 | /** @} |
84 | */ |
83 | */ |
85 | 84 | ||
86 | 85 |