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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/page_ht.h> |
37 | #include <genarch/mm/page_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 | #include <config.h> |
40 | #include <config.h> |
41 | 41 | ||
42 | #ifdef CONFIG_TSB |
42 | #ifdef CONFIG_TSB |
43 | #include <arch/mm/tsb.h> |
43 | #include <arch/mm/tsb.h> |
44 | #include <arch/memstr.h> |
44 | #include <arch/memstr.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 /* CONFIG_TSB */ |
49 | #endif /* CONFIG_TSB */ |
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 | if (config.cpu_active == 1) { |
54 | if (config.cpu_active == 1) { |
55 | as_operations = &as_ht_operations; |
55 | as_operations = &as_ht_operations; |
56 | asid_fifo_init(); |
56 | asid_fifo_init(); |
57 | } |
57 | } |
58 | } |
58 | } |
59 | 59 | ||
60 | int as_constructor_arch(as_t *as, int flags) |
60 | int as_constructor_arch(as_t *as, int flags) |
61 | { |
61 | { |
62 | #ifdef CONFIG_TSB |
62 | #ifdef CONFIG_TSB |
63 | /* |
63 | /* |
64 | * The order must be calculated with respect to the emulated |
64 | * The order must be calculated with respect to the emulated |
65 | * 16K page size. |
65 | * 16K page size. |
66 | */ |
66 | */ |
67 | int order = fnzb32(((ITSB_ENTRY_COUNT + DTSB_ENTRY_COUNT) * |
67 | int order = fnzb32(((ITSB_ENTRY_COUNT + DTSB_ENTRY_COUNT) * |
68 | sizeof(tsb_entry_t)) >> FRAME_WIDTH); |
68 | sizeof(tsb_entry_t)) >> FRAME_WIDTH); |
69 | 69 | ||
70 | uintptr_t tsb = (uintptr_t) frame_alloc(order, flags | FRAME_KA); |
70 | uintptr_t tsb = (uintptr_t) frame_alloc(order, flags | FRAME_KA); |
71 | 71 | ||
72 | if (!tsb) |
72 | if (!tsb) |
73 | return -1; |
73 | return -1; |
74 | 74 | ||
75 | as->arch.itsb = (tsb_entry_t *) tsb; |
75 | as->arch.itsb = (tsb_entry_t *) tsb; |
76 | as->arch.dtsb = (tsb_entry_t *) (tsb + ITSB_ENTRY_COUNT * |
76 | as->arch.dtsb = (tsb_entry_t *) (tsb + ITSB_ENTRY_COUNT * |
77 | sizeof(tsb_entry_t)); |
77 | sizeof(tsb_entry_t)); |
78 | 78 | ||
79 | memsetb((uintptr_t) as->arch.itsb, |
79 | memsetb(as->arch.itsb, |
80 | (ITSB_ENTRY_COUNT + DTSB_ENTRY_COUNT) * sizeof(tsb_entry_t), 0); |
80 | (ITSB_ENTRY_COUNT + DTSB_ENTRY_COUNT) * sizeof(tsb_entry_t), 0); |
81 | #endif |
81 | #endif |
82 | return 0; |
82 | return 0; |
83 | } |
83 | } |
84 | 84 | ||
85 | int as_destructor_arch(as_t *as) |
85 | int as_destructor_arch(as_t *as) |
86 | { |
86 | { |
87 | #ifdef CONFIG_TSB |
87 | #ifdef CONFIG_TSB |
88 | /* |
88 | /* |
89 | * The count must be calculated with respect to the emualted 16K page |
89 | * The count must be calculated with respect to the emualted 16K page |
90 | * size. |
90 | * size. |
91 | */ |
91 | */ |
92 | count_t cnt = ((ITSB_ENTRY_COUNT + DTSB_ENTRY_COUNT) * |
92 | count_t cnt = ((ITSB_ENTRY_COUNT + DTSB_ENTRY_COUNT) * |
93 | sizeof(tsb_entry_t)) >> FRAME_WIDTH; |
93 | sizeof(tsb_entry_t)) >> FRAME_WIDTH; |
94 | frame_free(KA2PA((uintptr_t) as->arch.itsb)); |
94 | frame_free(KA2PA((uintptr_t) as->arch.itsb)); |
95 | return cnt; |
95 | return cnt; |
96 | #else |
96 | #else |
97 | return 0; |
97 | return 0; |
98 | #endif |
98 | #endif |
99 | } |
99 | } |
100 | 100 | ||
101 | int as_create_arch(as_t *as, int flags) |
101 | int as_create_arch(as_t *as, int flags) |
102 | { |
102 | { |
103 | #ifdef CONFIG_TSB |
103 | #ifdef CONFIG_TSB |
104 | tsb_invalidate(as, 0, (count_t) -1); |
104 | tsb_invalidate(as, 0, (count_t) -1); |
105 | #endif |
105 | #endif |
106 | return 0; |
106 | return 0; |
107 | } |
107 | } |
108 | 108 | ||
109 | /** Perform sparc64-specific tasks when an address space becomes active on the |
109 | /** Perform sparc64-specific tasks when an address space becomes active on the |
110 | * processor. |
110 | * processor. |
111 | * |
111 | * |
112 | * Install ASID and map TSBs. |
112 | * Install ASID and map TSBs. |
113 | * |
113 | * |
114 | * @param as Address space. |
114 | * @param as Address space. |
115 | */ |
115 | */ |
116 | void as_install_arch(as_t *as) |
116 | void as_install_arch(as_t *as) |
117 | { |
117 | { |
118 | tlb_context_reg_t ctx; |
118 | tlb_context_reg_t ctx; |
119 | 119 | ||
120 | /* |
120 | /* |
121 | * Note that we don't and may not lock the address space. That's ok |
121 | * Note that we don't and may not lock the address space. That's ok |
122 | * since we only read members that are currently read-only. |
122 | * since we only read members that are currently read-only. |
123 | * |
123 | * |
124 | * Moreover, the as->asid is protected by asidlock, which is being held. |
124 | * Moreover, the as->asid is protected by asidlock, which is being held. |
125 | */ |
125 | */ |
126 | 126 | ||
127 | /* |
127 | /* |
128 | * Write ASID to secondary context register. The primary context |
128 | * Write ASID to secondary context register. The primary context |
129 | * register has to be set from TL>0 so it will be filled from the |
129 | * register has to be set from TL>0 so it will be filled from the |
130 | * secondary context register from the TL=1 code just before switch to |
130 | * secondary context register from the TL=1 code just before switch to |
131 | * userspace. |
131 | * userspace. |
132 | */ |
132 | */ |
133 | ctx.v = 0; |
133 | ctx.v = 0; |
134 | ctx.context = as->asid; |
134 | ctx.context = as->asid; |
135 | mmu_secondary_context_write(ctx.v); |
135 | mmu_secondary_context_write(ctx.v); |
136 | 136 | ||
137 | #ifdef CONFIG_TSB |
137 | #ifdef CONFIG_TSB |
138 | uintptr_t base = ALIGN_DOWN(config.base, 1 << KERNEL_PAGE_WIDTH); |
138 | uintptr_t base = ALIGN_DOWN(config.base, 1 << KERNEL_PAGE_WIDTH); |
139 | 139 | ||
140 | ASSERT(as->arch.itsb && as->arch.dtsb); |
140 | ASSERT(as->arch.itsb && as->arch.dtsb); |
141 | 141 | ||
142 | uintptr_t tsb = (uintptr_t) as->arch.itsb; |
142 | uintptr_t tsb = (uintptr_t) as->arch.itsb; |
143 | 143 | ||
144 | if (!overlaps(tsb, 8 * MMU_PAGE_SIZE, base, 1 << KERNEL_PAGE_WIDTH)) { |
144 | if (!overlaps(tsb, 8 * MMU_PAGE_SIZE, base, 1 << KERNEL_PAGE_WIDTH)) { |
145 | /* |
145 | /* |
146 | * TSBs were allocated from memory not covered |
146 | * TSBs were allocated from memory not covered |
147 | * by the locked 4M kernel DTLB entry. We need |
147 | * by the locked 4M kernel DTLB entry. We need |
148 | * to map both TSBs explicitly. |
148 | * to map both TSBs explicitly. |
149 | */ |
149 | */ |
150 | dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, tsb); |
150 | dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, tsb); |
151 | dtlb_insert_mapping(tsb, KA2PA(tsb), PAGESIZE_64K, true, true); |
151 | dtlb_insert_mapping(tsb, KA2PA(tsb), PAGESIZE_64K, true, true); |
152 | } |
152 | } |
153 | 153 | ||
154 | /* |
154 | /* |
155 | * Setup TSB Base registers. |
155 | * Setup TSB Base registers. |
156 | */ |
156 | */ |
157 | tsb_base_reg_t tsb_base; |
157 | tsb_base_reg_t tsb_base; |
158 | 158 | ||
159 | tsb_base.value = 0; |
159 | tsb_base.value = 0; |
160 | tsb_base.size = TSB_SIZE; |
160 | tsb_base.size = TSB_SIZE; |
161 | tsb_base.split = 0; |
161 | tsb_base.split = 0; |
162 | 162 | ||
163 | tsb_base.base = ((uintptr_t) as->arch.itsb) >> MMU_PAGE_WIDTH; |
163 | tsb_base.base = ((uintptr_t) as->arch.itsb) >> MMU_PAGE_WIDTH; |
164 | itsb_base_write(tsb_base.value); |
164 | itsb_base_write(tsb_base.value); |
165 | tsb_base.base = ((uintptr_t) as->arch.dtsb) >> MMU_PAGE_WIDTH; |
165 | tsb_base.base = ((uintptr_t) as->arch.dtsb) >> MMU_PAGE_WIDTH; |
166 | dtsb_base_write(tsb_base.value); |
166 | dtsb_base_write(tsb_base.value); |
167 | #endif |
167 | #endif |
168 | } |
168 | } |
169 | 169 | ||
170 | /** Perform sparc64-specific tasks when an address space is removed from the |
170 | /** Perform sparc64-specific tasks when an address space is removed from the |
171 | * processor. |
171 | * processor. |
172 | * |
172 | * |
173 | * Demap TSBs. |
173 | * Demap TSBs. |
174 | * |
174 | * |
175 | * @param as Address space. |
175 | * @param as Address space. |
176 | */ |
176 | */ |
177 | void as_deinstall_arch(as_t *as) |
177 | void as_deinstall_arch(as_t *as) |
178 | { |
178 | { |
179 | 179 | ||
180 | /* |
180 | /* |
181 | * Note that we don't and may not lock the address space. That's ok |
181 | * Note that we don't and may not lock the address space. That's ok |
182 | * since we only read members that are currently read-only. |
182 | * since we only read members that are currently read-only. |
183 | * |
183 | * |
184 | * Moreover, the as->asid is protected by asidlock, which is being held. |
184 | * Moreover, the as->asid is protected by asidlock, which is being held. |
185 | */ |
185 | */ |
186 | 186 | ||
187 | #ifdef CONFIG_TSB |
187 | #ifdef CONFIG_TSB |
188 | uintptr_t base = ALIGN_DOWN(config.base, 1 << KERNEL_PAGE_WIDTH); |
188 | uintptr_t base = ALIGN_DOWN(config.base, 1 << KERNEL_PAGE_WIDTH); |
189 | 189 | ||
190 | ASSERT(as->arch.itsb && as->arch.dtsb); |
190 | ASSERT(as->arch.itsb && as->arch.dtsb); |
191 | 191 | ||
192 | uintptr_t tsb = (uintptr_t) as->arch.itsb; |
192 | uintptr_t tsb = (uintptr_t) as->arch.itsb; |
193 | 193 | ||
194 | if (!overlaps(tsb, 8 * MMU_PAGE_SIZE, base, 1 << KERNEL_PAGE_WIDTH)) { |
194 | if (!overlaps(tsb, 8 * MMU_PAGE_SIZE, base, 1 << KERNEL_PAGE_WIDTH)) { |
195 | /* |
195 | /* |
196 | * TSBs were allocated from memory not covered |
196 | * TSBs were allocated from memory not covered |
197 | * by the locked 4M kernel DTLB entry. We need |
197 | * by the locked 4M kernel DTLB entry. We need |
198 | * to demap the entry installed by as_install_arch(). |
198 | * to demap the entry installed by as_install_arch(). |
199 | */ |
199 | */ |
200 | dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, tsb); |
200 | dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, tsb); |
201 | } |
201 | } |
202 | #endif |
202 | #endif |
203 | } |
203 | } |
204 | 204 | ||
205 | /** @} |
205 | /** @} |
206 | */ |
206 | */ |
207 | 207 |