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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 | #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 <synch/mutex.h> |
45 | #include <synch/mutex.h> |
46 | #include <arch/asm.h> |
46 | #include <arch/asm.h> |
47 | #include <mm/frame.h> |
47 | #include <mm/frame.h> |
48 | #include <bitops.h> |
48 | #include <bitops.h> |
49 | #include <macros.h> |
49 | #include <macros.h> |
50 | #endif |
50 | #endif |
51 | 51 | ||
52 | /** Architecture dependent address space init. */ |
52 | /** Architecture dependent address space init. */ |
53 | void as_arch_init(void) |
53 | void as_arch_init(void) |
54 | { |
54 | { |
55 | if (config.cpu_active == 1) { |
55 | if (config.cpu_active == 1) { |
56 | as_operations = &as_ht_operations; |
56 | as_operations = &as_ht_operations; |
57 | asid_fifo_init(); |
57 | asid_fifo_init(); |
58 | } |
58 | } |
59 | } |
59 | } |
60 | 60 | ||
61 | int as_constructor_arch(as_t *as, int flags) |
61 | int as_constructor_arch(as_t *as, int flags) |
62 | { |
62 | { |
63 | #ifdef CONFIG_TSB |
63 | #ifdef CONFIG_TSB |
64 | int order = fnzb32(((ITSB_ENTRY_COUNT+DTSB_ENTRY_COUNT)*sizeof(tsb_entry_t))>>FRAME_WIDTH); |
64 | int order = fnzb32(((ITSB_ENTRY_COUNT+DTSB_ENTRY_COUNT)*sizeof(tsb_entry_t))>>FRAME_WIDTH); |
65 | uintptr_t tsb = (uintptr_t) frame_alloc(order, flags); |
65 | uintptr_t tsb = (uintptr_t) frame_alloc(order, flags | FRAME_KA); |
66 | 66 | ||
67 | if (!tsb) |
67 | if (!tsb) |
68 | return -1; |
68 | return -1; |
69 | 69 | ||
70 | as->arch.itsb = (tsb_entry_t *) tsb; |
70 | as->arch.itsb = (tsb_entry_t *) tsb; |
71 | as->arch.dtsb = (tsb_entry_t *) (tsb + ITSB_ENTRY_COUNT * sizeof(tsb_entry_t)); |
71 | as->arch.dtsb = (tsb_entry_t *) (tsb + ITSB_ENTRY_COUNT * sizeof(tsb_entry_t)); |
72 | memsetb((uintptr_t) as->arch.itsb, (ITSB_ENTRY_COUNT+DTSB_ENTRY_COUNT)*sizeof(tsb_entry_t), 0); |
72 | memsetb((uintptr_t) as->arch.itsb, (ITSB_ENTRY_COUNT+DTSB_ENTRY_COUNT)*sizeof(tsb_entry_t), 0); |
73 | #endif |
73 | #endif |
74 | return 0; |
74 | return 0; |
75 | } |
75 | } |
76 | 76 | ||
77 | int as_destructor_arch(as_t *as) |
77 | int as_destructor_arch(as_t *as) |
78 | { |
78 | { |
79 | #ifdef CONFIG_TSB |
79 | #ifdef CONFIG_TSB |
80 | count_t cnt = ((ITSB_ENTRY_COUNT+DTSB_ENTRY_COUNT)*sizeof(tsb_entry_t))>>FRAME_WIDTH; |
80 | count_t cnt = ((ITSB_ENTRY_COUNT+DTSB_ENTRY_COUNT)*sizeof(tsb_entry_t))>>FRAME_WIDTH; |
81 | frame_free((uintptr_t) as->arch.itsb); |
81 | frame_free(KA2PA((uintptr_t) as->arch.itsb)); |
82 | return cnt; |
82 | return cnt; |
83 | #else |
83 | #else |
84 | return 0; |
84 | return 0; |
85 | #endif |
85 | #endif |
86 | } |
86 | } |
87 | 87 | ||
88 | int as_create_arch(as_t *as, int flags) |
88 | int as_create_arch(as_t *as, int flags) |
89 | { |
89 | { |
90 | #ifdef CONFIG_TSB |
90 | #ifdef CONFIG_TSB |
91 | ipl_t ipl; |
91 | ipl_t ipl; |
92 | 92 | ||
93 | ipl = interrupts_disable(); |
93 | ipl = interrupts_disable(); |
94 | mutex_lock_active(&as->lock); /* completely unnecessary, but polite */ |
94 | mutex_lock_active(&as->lock); /* completely unnecessary, but polite */ |
95 | tsb_invalidate(as, 0, (count_t) -1); |
95 | tsb_invalidate(as, 0, (count_t) -1); |
96 | mutex_unlock(&as->lock); |
96 | mutex_unlock(&as->lock); |
97 | interrupts_restore(ipl); |
97 | interrupts_restore(ipl); |
98 | #endif |
98 | #endif |
99 | return 0; |
99 | return 0; |
100 | } |
100 | } |
101 | 101 | ||
102 | /** Perform sparc64-specific tasks when an address space becomes active on the processor. |
102 | /** Perform sparc64-specific tasks when an address space becomes active on the processor. |
103 | * |
103 | * |
104 | * Install ASID and map TSBs. |
104 | * Install ASID and map TSBs. |
105 | * |
105 | * |
106 | * @param as Address space. |
106 | * @param as Address space. |
107 | */ |
107 | */ |
108 | void as_install_arch(as_t *as) |
108 | void as_install_arch(as_t *as) |
109 | { |
109 | { |
110 | tlb_context_reg_t ctx; |
110 | tlb_context_reg_t ctx; |
111 | 111 | ||
112 | /* |
112 | /* |
113 | * Note that we don't lock the address space. |
113 | * Note that we don't lock the address space. |
114 | * That's correct - we can afford it here |
114 | * That's correct - we can afford it here |
115 | * because we only read members that are |
115 | * because we only read members that are |
116 | * currently read-only. |
116 | * currently read-only. |
117 | */ |
117 | */ |
118 | 118 | ||
119 | /* |
119 | /* |
120 | * Write ASID to secondary context register. |
120 | * Write ASID to secondary context register. |
121 | * The primary context register has to be set |
121 | * The primary context register has to be set |
122 | * from TL>0 so it will be filled from the |
122 | * from TL>0 so it will be filled from the |
123 | * secondary context register from the TL=1 |
123 | * secondary context register from the TL=1 |
124 | * code just before switch to userspace. |
124 | * code just before switch to userspace. |
125 | */ |
125 | */ |
126 | ctx.v = 0; |
126 | ctx.v = 0; |
127 | ctx.context = as->asid; |
127 | ctx.context = as->asid; |
128 | mmu_secondary_context_write(ctx.v); |
128 | mmu_secondary_context_write(ctx.v); |
129 | 129 | ||
130 | #ifdef CONFIG_TSB |
130 | #ifdef CONFIG_TSB |
131 | uintptr_t base = ALIGN_DOWN(config.base, 1 << KERNEL_PAGE_WIDTH); |
131 | uintptr_t base = ALIGN_DOWN(config.base, 1 << KERNEL_PAGE_WIDTH); |
132 | 132 | ||
133 | ASSERT(as->arch.itsb && as->arch.dtsb); |
133 | ASSERT(as->arch.itsb && as->arch.dtsb); |
134 | 134 | ||
135 | uintptr_t tsb = (uintptr_t) as->arch.itsb; |
135 | uintptr_t tsb = (uintptr_t) as->arch.itsb; |
136 | 136 | ||
137 | if (!overlaps(tsb, 8*PAGE_SIZE, base, 1 << KERNEL_PAGE_WIDTH)) { |
137 | if (!overlaps(tsb, 8*PAGE_SIZE, base, 1 << KERNEL_PAGE_WIDTH)) { |
138 | /* |
138 | /* |
139 | * TSBs were allocated from memory not covered |
139 | * TSBs were allocated from memory not covered |
140 | * by the locked 4M kernel DTLB entry. We need |
140 | * by the locked 4M kernel DTLB entry. We need |
141 | * to map both TSBs explicitly. |
141 | * to map both TSBs explicitly. |
142 | */ |
142 | */ |
143 | dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, tsb); |
143 | dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, tsb); |
144 | dtlb_insert_mapping(tsb, KA2PA(tsb), PAGESIZE_64K, true, true); |
144 | dtlb_insert_mapping(tsb, KA2PA(tsb), PAGESIZE_64K, true, true); |
145 | } |
145 | } |
146 | 146 | ||
147 | /* |
147 | /* |
148 | * Setup TSB Base registers. |
148 | * Setup TSB Base registers. |
149 | */ |
149 | */ |
150 | tsb_base_reg_t tsb_base; |
150 | tsb_base_reg_t tsb_base; |
151 | 151 | ||
152 | tsb_base.value = 0; |
152 | tsb_base.value = 0; |
153 | tsb_base.size = TSB_SIZE; |
153 | tsb_base.size = TSB_SIZE; |
154 | tsb_base.split = 0; |
154 | tsb_base.split = 0; |
155 | 155 | ||
156 | tsb_base.base = ((uintptr_t) as->arch.itsb) >> PAGE_WIDTH; |
156 | tsb_base.base = ((uintptr_t) as->arch.itsb) >> PAGE_WIDTH; |
157 | itsb_base_write(tsb_base.value); |
157 | itsb_base_write(tsb_base.value); |
158 | tsb_base.base = ((uintptr_t) as->arch.dtsb) >> PAGE_WIDTH; |
158 | tsb_base.base = ((uintptr_t) as->arch.dtsb) >> PAGE_WIDTH; |
159 | dtsb_base_write(tsb_base.value); |
159 | dtsb_base_write(tsb_base.value); |
160 | #endif |
160 | #endif |
161 | } |
161 | } |
162 | 162 | ||
163 | /** Perform sparc64-specific tasks when an address space is removed from the processor. |
163 | /** Perform sparc64-specific tasks when an address space is removed from the processor. |
164 | * |
164 | * |
165 | * Demap TSBs. |
165 | * Demap TSBs. |
166 | * |
166 | * |
167 | * @param as Address space. |
167 | * @param as Address space. |
168 | */ |
168 | */ |
169 | void as_deinstall_arch(as_t *as) |
169 | void as_deinstall_arch(as_t *as) |
170 | { |
170 | { |
171 | 171 | ||
172 | /* |
172 | /* |
173 | * Note that we don't lock the address space. |
173 | * Note that we don't lock the address space. |
174 | * That's correct - we can afford it here |
174 | * That's correct - we can afford it here |
175 | * because we only read members that are |
175 | * because we only read members that are |
176 | * currently read-only. |
176 | * currently read-only. |
177 | */ |
177 | */ |
178 | 178 | ||
179 | #ifdef CONFIG_TSB |
179 | #ifdef CONFIG_TSB |
180 | uintptr_t base = ALIGN_DOWN(config.base, 1 << KERNEL_PAGE_WIDTH); |
180 | uintptr_t base = ALIGN_DOWN(config.base, 1 << KERNEL_PAGE_WIDTH); |
181 | 181 | ||
182 | ASSERT(as->arch.itsb && as->arch.dtsb); |
182 | ASSERT(as->arch.itsb && as->arch.dtsb); |
183 | 183 | ||
184 | uintptr_t tsb = (uintptr_t) as->arch.itsb; |
184 | uintptr_t tsb = (uintptr_t) as->arch.itsb; |
185 | 185 | ||
186 | if (!overlaps(tsb, 8*PAGE_SIZE, base, 1 << KERNEL_PAGE_WIDTH)) { |
186 | if (!overlaps(tsb, 8*PAGE_SIZE, base, 1 << KERNEL_PAGE_WIDTH)) { |
187 | /* |
187 | /* |
188 | * TSBs were allocated from memory not covered |
188 | * TSBs were allocated from memory not covered |
189 | * by the locked 4M kernel DTLB entry. We need |
189 | * by the locked 4M kernel DTLB entry. We need |
190 | * to demap the entry installed by as_install_arch(). |
190 | * to demap the entry installed by as_install_arch(). |
191 | */ |
191 | */ |
192 | dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, tsb); |
192 | dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, tsb); |
193 | } |
193 | } |
194 | #endif |
194 | #endif |
195 | } |
195 | } |
196 | 196 | ||
197 | /** @} |
197 | /** @} |
198 | */ |
198 | */ |
199 | 199 |