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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 sparc64mm |
29 | /** @addtogroup sparc64mm |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #include <arch/mm/as.h> |
35 | #include <arch/mm/as.h> |
36 | #include <arch/mm/tlb.h> |
36 | #include <arch/mm/tlb.h> |
37 | #include <genarch/mm/as_ht.h> |
37 | #include <genarch/mm/as_ht.h> |
38 | #include <genarch/mm/asid_fifo.h> |
38 | #include <genarch/mm/asid_fifo.h> |
39 | #include <debug.h> |
39 | #include <debug.h> |
40 | 40 | ||
41 | #ifdef CONFIG_TSB |
41 | #ifdef CONFIG_TSB |
42 | #include <arch/mm/tsb.h> |
42 | #include <arch/mm/tsb.h> |
43 | #include <arch/memstr.h> |
43 | #include <arch/memstr.h> |
44 | #include <synch/mutex.h> |
44 | #include <synch/mutex.h> |
45 | #include <arch/asm.h> |
45 | #include <arch/asm.h> |
46 | #include <mm/frame.h> |
46 | #include <mm/frame.h> |
47 | #include <bitops.h> |
47 | #include <bitops.h> |
48 | #include <macros.h> |
48 | #include <macros.h> |
49 | #endif |
49 | #endif |
50 | 50 | ||
51 | /** Architecture dependent address space init. */ |
51 | /** Architecture dependent address space init. */ |
52 | void as_arch_init(void) |
52 | void as_arch_init(void) |
53 | { |
53 | { |
54 | as_operations = &as_ht_operations; |
54 | as_operations = &as_ht_operations; |
55 | asid_fifo_init(); |
55 | asid_fifo_init(); |
56 | } |
56 | } |
57 | 57 | ||
58 | int as_constructor_arch(as_t *as, int flags) |
58 | int as_constructor_arch(as_t *as, int flags) |
59 | { |
59 | { |
60 | #ifdef CONFIG_TSB |
60 | #ifdef CONFIG_TSB |
61 | int order = fnzb32(((ITSB_ENTRY_COUNT+DTSB_ENTRY_COUNT)*sizeof(tsb_entry_t))>>FRAME_WIDTH); |
61 | int order = fnzb32(((ITSB_ENTRY_COUNT+DTSB_ENTRY_COUNT)*sizeof(tsb_entry_t))>>FRAME_WIDTH); |
62 | uintptr_t tsb = (uintptr_t) frame_alloc(order, flags); |
62 | uintptr_t tsb = (uintptr_t) frame_alloc(order, flags); |
63 | 63 | ||
64 | if (!tsb) |
64 | if (!tsb) |
65 | return -1; |
65 | return -1; |
66 | 66 | ||
67 | as->arch.itsb = (tsb_entry_t *) tsb; |
67 | as->arch.itsb = (tsb_entry_t *) tsb; |
68 | as->arch.dtsb = (tsb_entry_t *) (tsb + ITSB_ENTRY_COUNT * sizeof(tsb_entry_t)); |
68 | as->arch.dtsb = (tsb_entry_t *) (tsb + ITSB_ENTRY_COUNT * sizeof(tsb_entry_t)); |
- | 69 | memsetb((uintptr_t) as->arch.itsb, (ITSB_ENTRY_COUNT+DTSB_ENTRY_COUNT)*sizeof(tsb_entry_t), 0); |
|
69 | #endif |
70 | #endif |
70 | return 0; |
71 | return 0; |
71 | } |
72 | } |
72 | 73 | ||
73 | int as_destructor_arch(as_t *as) |
74 | int as_destructor_arch(as_t *as) |
74 | { |
75 | { |
75 | #ifdef CONFIG_TSB |
76 | #ifdef CONFIG_TSB |
76 | count_t cnt = ((ITSB_ENTRY_COUNT+DTSB_ENTRY_COUNT)*sizeof(tsb_entry_t))>>FRAME_WIDTH; |
77 | count_t cnt = ((ITSB_ENTRY_COUNT+DTSB_ENTRY_COUNT)*sizeof(tsb_entry_t))>>FRAME_WIDTH; |
77 | frame_free((uintptr_t) as->arch.itsb); |
78 | frame_free((uintptr_t) as->arch.itsb); |
78 | return cnt; |
79 | return cnt; |
79 | #else |
80 | #else |
80 | return 0; |
81 | return 0; |
81 | #endif |
82 | #endif |
82 | } |
83 | } |
83 | 84 | ||
84 | int as_create_arch(as_t *as, int flags) |
85 | int as_create_arch(as_t *as, int flags) |
85 | { |
86 | { |
86 | #ifdef CONFIG_TSB |
87 | #ifdef CONFIG_TSB |
87 | ipl_t ipl; |
88 | ipl_t ipl; |
88 | 89 | ||
89 | memsetb((uintptr_t) as->arch.itsb, (ITSB_ENTRY_COUNT+DTSB_ENTRY_COUNT)*sizeof(tsb_entry_t), 0); |
- | |
90 | ipl = interrupts_disable(); |
90 | ipl = interrupts_disable(); |
91 | mutex_lock_active(&as->lock); /* completely unnecessary, but polite */ |
91 | mutex_lock_active(&as->lock); /* completely unnecessary, but polite */ |
92 | tsb_invalidate(as, 0, (count_t) -1); |
92 | tsb_invalidate(as, 0, (count_t) -1); |
93 | mutex_unlock(&as->lock); |
93 | mutex_unlock(&as->lock); |
94 | interrupts_restore(ipl); |
94 | interrupts_restore(ipl); |
95 | #endif |
95 | #endif |
96 | return 0; |
96 | return 0; |
97 | } |
97 | } |
98 | 98 | ||
99 | /** Perform sparc64-specific tasks when an address space becomes active on the processor. |
99 | /** Perform sparc64-specific tasks when an address space becomes active on the processor. |
100 | * |
100 | * |
101 | * Install ASID and map TSBs. |
101 | * Install ASID and map TSBs. |
102 | * |
102 | * |
103 | * @param as Address space. |
103 | * @param as Address space. |
104 | */ |
104 | */ |
105 | void as_install_arch(as_t *as) |
105 | void as_install_arch(as_t *as) |
106 | { |
106 | { |
107 | tlb_context_reg_t ctx; |
107 | tlb_context_reg_t ctx; |
108 | 108 | ||
109 | /* |
109 | /* |
110 | * Note that we don't lock the address space. |
110 | * Note that we don't lock the address space. |
111 | * That's correct - we can afford it here |
111 | * That's correct - we can afford it here |
112 | * because we only read members that are |
112 | * because we only read members that are |
113 | * currently read-only. |
113 | * currently read-only. |
114 | */ |
114 | */ |
115 | 115 | ||
116 | /* |
116 | /* |
117 | * Write ASID to secondary context register. |
117 | * Write ASID to secondary context register. |
118 | * The primary context register has to be set |
118 | * The primary context register has to be set |
119 | * from TL>0 so it will be filled from the |
119 | * from TL>0 so it will be filled from the |
120 | * secondary context register from the TL=1 |
120 | * secondary context register from the TL=1 |
121 | * code just before switch to userspace. |
121 | * code just before switch to userspace. |
122 | */ |
122 | */ |
123 | ctx.v = 0; |
123 | ctx.v = 0; |
124 | ctx.context = as->asid; |
124 | ctx.context = as->asid; |
125 | mmu_secondary_context_write(ctx.v); |
125 | mmu_secondary_context_write(ctx.v); |
126 | 126 | ||
127 | #ifdef CONFIG_TSB |
127 | #ifdef CONFIG_TSB |
128 | uintptr_t base = ALIGN_DOWN(config.base, 1 << KERNEL_PAGE_WIDTH); |
128 | uintptr_t base = ALIGN_DOWN(config.base, 1 << KERNEL_PAGE_WIDTH); |
129 | 129 | ||
130 | ASSERT(as->arch.itsb && as->arch.dtsb); |
130 | ASSERT(as->arch.itsb && as->arch.dtsb); |
131 | 131 | ||
132 | uintptr_t tsb = (uintptr_t) as->arch.itsb; |
132 | uintptr_t tsb = (uintptr_t) as->arch.itsb; |
133 | 133 | ||
134 | if (!overlaps(tsb, 8*PAGE_SIZE, base, 1 << KERNEL_PAGE_WIDTH)) { |
134 | if (!overlaps(tsb, 8*PAGE_SIZE, base, 1 << KERNEL_PAGE_WIDTH)) { |
135 | /* |
135 | /* |
136 | * TSBs were allocated from memory not covered |
136 | * TSBs were allocated from memory not covered |
137 | * by the locked 4M kernel DTLB entry. We need |
137 | * by the locked 4M kernel DTLB entry. We need |
138 | * to map both TSBs explicitly. |
138 | * to map both TSBs explicitly. |
139 | */ |
139 | */ |
140 | dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, tsb); |
140 | dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, tsb); |
141 | dtlb_insert_mapping(tsb, KA2PA(tsb), PAGESIZE_64K, true, true); |
141 | dtlb_insert_mapping(tsb, KA2PA(tsb), PAGESIZE_64K, true, true); |
142 | } |
142 | } |
143 | 143 | ||
144 | /* |
144 | /* |
145 | * Setup TSB Base registers. |
145 | * Setup TSB Base registers. |
146 | */ |
146 | */ |
147 | tsb_base_reg_t tsb_base; |
147 | tsb_base_reg_t tsb_base; |
148 | 148 | ||
149 | tsb_base.value = 0; |
149 | tsb_base.value = 0; |
150 | tsb_base.size = TSB_SIZE; |
150 | tsb_base.size = TSB_SIZE; |
151 | tsb_base.split = 0; |
151 | tsb_base.split = 0; |
152 | 152 | ||
153 | tsb_base.base = ((uintptr_t) as->arch.itsb) >> PAGE_WIDTH; |
153 | tsb_base.base = ((uintptr_t) as->arch.itsb) >> PAGE_WIDTH; |
154 | itsb_base_write(tsb_base.value); |
154 | itsb_base_write(tsb_base.value); |
155 | tsb_base.base = ((uintptr_t) as->arch.dtsb) >> PAGE_WIDTH; |
155 | tsb_base.base = ((uintptr_t) as->arch.dtsb) >> PAGE_WIDTH; |
156 | dtsb_base_write(tsb_base.value); |
156 | dtsb_base_write(tsb_base.value); |
157 | #endif |
157 | #endif |
158 | } |
158 | } |
159 | 159 | ||
160 | /** Perform sparc64-specific tasks when an address space is removed from the processor. |
160 | /** Perform sparc64-specific tasks when an address space is removed from the processor. |
161 | * |
161 | * |
162 | * Demap TSBs. |
162 | * Demap TSBs. |
163 | * |
163 | * |
164 | * @param as Address space. |
164 | * @param as Address space. |
165 | */ |
165 | */ |
166 | void as_deinstall_arch(as_t *as) |
166 | void as_deinstall_arch(as_t *as) |
167 | { |
167 | { |
168 | 168 | ||
169 | /* |
169 | /* |
170 | * Note that we don't lock the address space. |
170 | * Note that we don't lock the address space. |
171 | * That's correct - we can afford it here |
171 | * That's correct - we can afford it here |
172 | * because we only read members that are |
172 | * because we only read members that are |
173 | * currently read-only. |
173 | * currently read-only. |
174 | */ |
174 | */ |
175 | 175 | ||
176 | #ifdef CONFIG_TSB |
176 | #ifdef CONFIG_TSB |
177 | uintptr_t base = ALIGN_DOWN(config.base, 1 << KERNEL_PAGE_WIDTH); |
177 | uintptr_t base = ALIGN_DOWN(config.base, 1 << KERNEL_PAGE_WIDTH); |
178 | 178 | ||
179 | ASSERT(as->arch.itsb && as->arch.dtsb); |
179 | ASSERT(as->arch.itsb && as->arch.dtsb); |
180 | 180 | ||
181 | uintptr_t tsb = (uintptr_t) as->arch.itsb; |
181 | uintptr_t tsb = (uintptr_t) as->arch.itsb; |
182 | 182 | ||
183 | if (!overlaps(tsb, 8*PAGE_SIZE, base, 1 << KERNEL_PAGE_WIDTH)) { |
183 | if (!overlaps(tsb, 8*PAGE_SIZE, base, 1 << KERNEL_PAGE_WIDTH)) { |
184 | /* |
184 | /* |
185 | * TSBs were allocated from memory not covered |
185 | * TSBs were allocated from memory not covered |
186 | * by the locked 4M kernel DTLB entry. We need |
186 | * by the locked 4M kernel DTLB entry. We need |
187 | * to demap the entry installed by as_install_arch(). |
187 | * to demap the entry installed by as_install_arch(). |
188 | */ |
188 | */ |
189 | dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, tsb); |
189 | dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, tsb); |
190 | } |
190 | } |
191 | #endif |
191 | #endif |
192 | } |
192 | } |
193 | 193 | ||
194 | /** @} |
194 | /** @} |
195 | */ |
195 | */ |
196 | 196 |