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1 | /* |
1 | /* |
2 | * Copyright (C) 2005 Jakub Jermar |
2 | * Copyright (C) 2005 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 | /** |
29 | /** |
30 | * @file madt.c |
30 | * @file madt.c |
31 | * @brief Multiple APIC Description Table (MADT) parsing. |
31 | * @brief Multiple APIC Description Table (MADT) parsing. |
32 | */ |
32 | */ |
33 | 33 | ||
34 | #include <arch/types.h> |
34 | #include <arch/types.h> |
35 | #include <typedefs.h> |
35 | #include <typedefs.h> |
36 | #include <genarch/acpi/acpi.h> |
36 | #include <genarch/acpi/acpi.h> |
37 | #include <genarch/acpi/madt.h> |
37 | #include <genarch/acpi/madt.h> |
38 | #include <arch/smp/apic.h> |
38 | #include <arch/smp/apic.h> |
39 | #include <arch/smp/smp.h> |
39 | #include <arch/smp/smp.h> |
40 | #include <panic.h> |
40 | #include <panic.h> |
41 | #include <debug.h> |
41 | #include <debug.h> |
42 | #include <config.h> |
42 | #include <config.h> |
43 | #include <print.h> |
43 | #include <print.h> |
44 | #include <mm/slab.h> |
44 | #include <mm/slab.h> |
45 | #include <memstr.h> |
45 | #include <memstr.h> |
46 | #include <sort.h> |
46 | #include <sort.h> |
47 | 47 | ||
48 | struct acpi_madt *acpi_madt = NULL; |
48 | struct acpi_madt *acpi_madt = NULL; |
49 | 49 | ||
50 | #ifdef CONFIG_SMP |
50 | #ifdef CONFIG_SMP |
51 | 51 | ||
52 | /** Standard ISA IRQ map; can be overriden by Interrupt Source Override entries of MADT. */ |
52 | /** Standard ISA IRQ map; can be overriden by Interrupt Source Override entries of MADT. */ |
53 | int isa_irq_map[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }; |
53 | int isa_irq_map[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }; |
54 | 54 | ||
55 | static void madt_l_apic_entry(struct madt_l_apic *la, __u32 index); |
55 | static void madt_l_apic_entry(struct madt_l_apic *la, __u32 index); |
56 | static void madt_io_apic_entry(struct madt_io_apic *ioa, __u32 index); |
56 | static void madt_io_apic_entry(struct madt_io_apic *ioa, __u32 index); |
57 | static void madt_intr_src_ovrd_entry(struct madt_intr_src_ovrd *override, __u32 index); |
57 | static void madt_intr_src_ovrd_entry(struct madt_intr_src_ovrd *override, __u32 index); |
58 | static int madt_cmp(void * a, void * b); |
58 | static int madt_cmp(void * a, void * b); |
59 | 59 | ||
60 | struct madt_l_apic *madt_l_apic_entries = NULL; |
60 | struct madt_l_apic *madt_l_apic_entries = NULL; |
61 | struct madt_io_apic *madt_io_apic_entries = NULL; |
61 | struct madt_io_apic *madt_io_apic_entries = NULL; |
62 | 62 | ||
63 | index_t madt_l_apic_entry_index = 0; |
63 | index_t madt_l_apic_entry_index = 0; |
64 | index_t madt_io_apic_entry_index = 0; |
64 | index_t madt_io_apic_entry_index = 0; |
65 | count_t madt_l_apic_entry_cnt = 0; |
65 | count_t madt_l_apic_entry_cnt = 0; |
66 | count_t madt_io_apic_entry_cnt = 0; |
66 | count_t madt_io_apic_entry_cnt = 0; |
67 | count_t cpu_count = 0; |
67 | count_t cpu_count = 0; |
68 | 68 | ||
69 | struct madt_apic_header * * madt_entries_index = NULL; |
69 | struct madt_apic_header * * madt_entries_index = NULL; |
70 | int madt_entries_index_cnt = 0; |
70 | int madt_entries_index_cnt = 0; |
71 | 71 | ||
72 | char *entry[] = { |
72 | char *entry[] = { |
73 | "L_APIC", |
73 | "L_APIC", |
74 | "IO_APIC", |
74 | "IO_APIC", |
75 | "INTR_SRC_OVRD", |
75 | "INTR_SRC_OVRD", |
76 | "NMI_SRC", |
76 | "NMI_SRC", |
77 | "L_APIC_NMI", |
77 | "L_APIC_NMI", |
78 | "L_APIC_ADDR_OVRD", |
78 | "L_APIC_ADDR_OVRD", |
79 | "IO_SAPIC", |
79 | "IO_SAPIC", |
80 | "L_SAPIC", |
80 | "L_SAPIC", |
81 | "PLATFORM_INTR_SRC" |
81 | "PLATFORM_INTR_SRC" |
82 | }; |
82 | }; |
83 | 83 | ||
84 | /* |
84 | /* |
85 | * ACPI MADT Implementation of SMP configuration interface. |
85 | * ACPI MADT Implementation of SMP configuration interface. |
86 | */ |
86 | */ |
87 | static count_t madt_cpu_count(void); |
87 | static count_t madt_cpu_count(void); |
88 | static bool madt_cpu_enabled(index_t i); |
88 | static bool madt_cpu_enabled(index_t i); |
89 | static bool madt_cpu_bootstrap(index_t i); |
89 | static bool madt_cpu_bootstrap(index_t i); |
90 | static __u8 madt_cpu_apic_id(index_t i); |
90 | static __u8 madt_cpu_apic_id(index_t i); |
91 | static int madt_irq_to_pin(int irq); |
91 | static int madt_irq_to_pin(int irq); |
92 | 92 | ||
93 | struct smp_config_operations madt_config_operations = { |
93 | struct smp_config_operations madt_config_operations = { |
94 | .cpu_count = madt_cpu_count, |
94 | .cpu_count = madt_cpu_count, |
95 | .cpu_enabled = madt_cpu_enabled, |
95 | .cpu_enabled = madt_cpu_enabled, |
96 | .cpu_bootstrap = madt_cpu_bootstrap, |
96 | .cpu_bootstrap = madt_cpu_bootstrap, |
97 | .cpu_apic_id = madt_cpu_apic_id, |
97 | .cpu_apic_id = madt_cpu_apic_id, |
98 | .irq_to_pin = madt_irq_to_pin |
98 | .irq_to_pin = madt_irq_to_pin |
99 | }; |
99 | }; |
100 | 100 | ||
101 | count_t madt_cpu_count(void) |
101 | count_t madt_cpu_count(void) |
102 | { |
102 | { |
103 | return madt_l_apic_entry_cnt; |
103 | return madt_l_apic_entry_cnt; |
104 | } |
104 | } |
105 | 105 | ||
106 | bool madt_cpu_enabled(index_t i) |
106 | bool madt_cpu_enabled(index_t i) |
107 | { |
107 | { |
108 | ASSERT(i < madt_l_apic_entry_cnt); |
108 | ASSERT(i < madt_l_apic_entry_cnt); |
109 | return ((struct madt_l_apic *) madt_entries_index[madt_l_apic_entry_index + i])->flags & 0x1; |
109 | return ((struct madt_l_apic *) madt_entries_index[madt_l_apic_entry_index + i])->flags & 0x1; |
110 | 110 | ||
111 | } |
111 | } |
112 | 112 | ||
113 | bool madt_cpu_bootstrap(index_t i) |
113 | bool madt_cpu_bootstrap(index_t i) |
114 | { |
114 | { |
115 | ASSERT(i < madt_l_apic_entry_cnt); |
115 | ASSERT(i < madt_l_apic_entry_cnt); |
116 | return ((struct madt_l_apic *) madt_entries_index[madt_l_apic_entry_index + i])->apic_id == l_apic_id(); |
116 | return ((struct madt_l_apic *) madt_entries_index[madt_l_apic_entry_index + i])->apic_id == l_apic_id(); |
117 | } |
117 | } |
118 | 118 | ||
119 | __u8 madt_cpu_apic_id(index_t i) |
119 | __u8 madt_cpu_apic_id(index_t i) |
120 | { |
120 | { |
121 | ASSERT(i < madt_l_apic_entry_cnt); |
121 | ASSERT(i < madt_l_apic_entry_cnt); |
122 | return ((struct madt_l_apic *) madt_entries_index[madt_l_apic_entry_index + i])->apic_id; |
122 | return ((struct madt_l_apic *) madt_entries_index[madt_l_apic_entry_index + i])->apic_id; |
123 | } |
123 | } |
124 | 124 | ||
125 | int madt_irq_to_pin(int irq) |
125 | int madt_irq_to_pin(int irq) |
126 | { |
126 | { |
127 | ASSERT(irq < sizeof(isa_irq_map)/sizeof(int)); |
127 | ASSERT(irq < sizeof(isa_irq_map)/sizeof(int)); |
128 | return isa_irq_map[irq]; |
128 | return isa_irq_map[irq]; |
129 | } |
129 | } |
130 | 130 | ||
131 | int madt_cmp(void * a, void * b) |
131 | int madt_cmp(void * a, void * b) |
132 | { |
132 | { |
133 | return |
133 | return |
134 | (((struct madt_apic_header *) a)->type > ((struct madt_apic_header *) b)->type) ? |
134 | (((struct madt_apic_header *) a)->type > ((struct madt_apic_header *) b)->type) ? |
135 | 1 : |
135 | 1 : |
136 | ((((struct madt_apic_header *) a)->type < ((struct madt_apic_header *) b)->type) ? -1 : 0); |
136 | ((((struct madt_apic_header *) a)->type < ((struct madt_apic_header *) b)->type) ? -1 : 0); |
137 | } |
137 | } |
138 | 138 | ||
139 | void acpi_madt_parse(void) |
139 | void acpi_madt_parse(void) |
140 | { |
140 | { |
141 | struct madt_apic_header *end = (struct madt_apic_header *) (((__u8 *) acpi_madt) + acpi_madt->header.length); |
141 | struct madt_apic_header *end = (struct madt_apic_header *) (((__u8 *) acpi_madt) + acpi_madt->header.length); |
142 | struct madt_apic_header *h; |
142 | struct madt_apic_header *h; |
143 | 143 | ||
144 | l_apic = (__u32 *) (__native) acpi_madt->l_apic_address; |
144 | l_apic = (__u32 *) (__native) acpi_madt->l_apic_address; |
145 | 145 | ||
146 | /* calculate madt entries */ |
146 | /* calculate madt entries */ |
147 | for (h = &acpi_madt->apic_header[0]; h < end; h = (struct madt_apic_header *) (((__u8 *) h) + h->length)) { |
147 | for (h = &acpi_madt->apic_header[0]; h < end; h = (struct madt_apic_header *) (((__u8 *) h) + h->length)) { |
148 | madt_entries_index_cnt++; |
148 | madt_entries_index_cnt++; |
149 | } |
149 | } |
150 | 150 | ||
151 | /* create madt apic entries index array */ |
151 | /* create madt apic entries index array */ |
152 | madt_entries_index = (struct madt_apic_header * *) malloc(madt_entries_index_cnt * sizeof(struct madt_apic_header * *), FRAME_ATOMIC); |
152 | madt_entries_index = (struct madt_apic_header * *) malloc(madt_entries_index_cnt * sizeof(struct madt_apic_header * *), FRAME_ATOMIC); |
153 | if (!madt_entries_index) |
153 | if (!madt_entries_index) |
154 | panic("Memory allocation error."); |
154 | panic("Memory allocation error."); |
155 | 155 | ||
156 | __u32 index = 0; |
156 | __u32 index = 0; |
157 | 157 | ||
158 | for (h = &acpi_madt->apic_header[0]; h < end; h = (struct madt_apic_header *) (((__u8 *) h) + h->length)) { |
158 | for (h = &acpi_madt->apic_header[0]; h < end; h = (struct madt_apic_header *) (((__u8 *) h) + h->length)) { |
159 | madt_entries_index[index++] = h; |
159 | madt_entries_index[index++] = h; |
160 | } |
160 | } |
161 | 161 | ||
162 | /* Quicksort MADT index structure */ |
162 | /* Quicksort MADT index structure */ |
163 | qsort(madt_entries_index, madt_entries_index_cnt, sizeof(__address), &madt_cmp); |
163 | qsort(madt_entries_index, madt_entries_index_cnt, sizeof(__address), &madt_cmp); |
164 | 164 | ||
165 | /* Parse MADT entries */ |
165 | /* Parse MADT entries */ |
166 | for (index = 0; index < madt_entries_index_cnt - 1; index++) { |
166 | for (index = 0; index < madt_entries_index_cnt - 1; index++) { |
167 | h = madt_entries_index[index]; |
167 | h = madt_entries_index[index]; |
168 | switch (h->type) { |
168 | switch (h->type) { |
169 | case MADT_L_APIC: |
169 | case MADT_L_APIC: |
170 | madt_l_apic_entry((struct madt_l_apic *) h, index); |
170 | madt_l_apic_entry((struct madt_l_apic *) h, index); |
171 | break; |
171 | break; |
172 | case MADT_IO_APIC: |
172 | case MADT_IO_APIC: |
173 | madt_io_apic_entry((struct madt_io_apic *) h, index); |
173 | madt_io_apic_entry((struct madt_io_apic *) h, index); |
174 | break; |
174 | break; |
175 | case MADT_INTR_SRC_OVRD: |
175 | case MADT_INTR_SRC_OVRD: |
176 | madt_intr_src_ovrd_entry((struct madt_intr_src_ovrd *) h, index); |
176 | madt_intr_src_ovrd_entry((struct madt_intr_src_ovrd *) h, index); |
177 | break; |
177 | break; |
178 | case MADT_NMI_SRC: |
178 | case MADT_NMI_SRC: |
179 | case MADT_L_APIC_NMI: |
179 | case MADT_L_APIC_NMI: |
180 | case MADT_L_APIC_ADDR_OVRD: |
180 | case MADT_L_APIC_ADDR_OVRD: |
181 | case MADT_IO_SAPIC: |
181 | case MADT_IO_SAPIC: |
182 | case MADT_L_SAPIC: |
182 | case MADT_L_SAPIC: |
183 | case MADT_PLATFORM_INTR_SRC: |
183 | case MADT_PLATFORM_INTR_SRC: |
184 | printf("MADT: skipping %s entry (type=%zd)\n", entry[h->type], h->type); |
184 | printf("MADT: skipping %s entry (type=%zd)\n", entry[h->type], h->type); |
185 | break; |
185 | break; |
186 | 186 | ||
187 | default: |
187 | default: |
188 | if (h->type >= MADT_RESERVED_SKIP_BEGIN && h->type <= MADT_RESERVED_SKIP_END) { |
188 | if (h->type >= MADT_RESERVED_SKIP_BEGIN && h->type <= MADT_RESERVED_SKIP_END) { |
189 | printf("MADT: skipping reserved entry (type=%zd)\n", h->type); |
189 | printf("MADT: skipping reserved entry (type=%zd)\n", h->type); |
190 | } |
190 | } |
191 | if (h->type >= MADT_RESERVED_OEM_BEGIN) { |
191 | if (h->type >= MADT_RESERVED_OEM_BEGIN) { |
192 | printf("MADT: skipping OEM entry (type=%zd)\n", h->type); |
192 | printf("MADT: skipping OEM entry (type=%zd)\n", h->type); |
193 | } |
193 | } |
194 | break; |
194 | break; |
195 | } |
195 | } |
196 | 196 | ||
197 | 197 | ||
198 | } |
198 | } |
199 | 199 | ||
200 | 200 | ||
201 | if (cpu_count) |
201 | if (cpu_count) |
202 | config.cpu_count = cpu_count; |
202 | config.cpu_count = cpu_count; |
203 | } |
203 | } |
204 | 204 | ||
205 | 205 | ||
206 | void madt_l_apic_entry(struct madt_l_apic *la, __u32 index) |
206 | void madt_l_apic_entry(struct madt_l_apic *la, __u32 index) |
207 | { |
207 | { |
208 | if (!madt_l_apic_entry_cnt++) { |
208 | if (!madt_l_apic_entry_cnt++) { |
209 | madt_l_apic_entry_index = index; |
209 | madt_l_apic_entry_index = index; |
210 | } |
210 | } |
211 | 211 | ||
212 | if (!(la->flags & 0x1)) { |
212 | if (!(la->flags & 0x1)) { |
213 | /* Processor is unusable, skip it. */ |
213 | /* Processor is unusable, skip it. */ |
214 | return; |
214 | return; |
215 | } |
215 | } |
216 | 216 | ||
217 | cpu_count++; |
217 | cpu_count++; |
218 | apic_id_mask |= 1<<la->apic_id; |
218 | apic_id_mask |= 1<<la->apic_id; |
219 | } |
219 | } |
220 | 220 | ||
221 | void madt_io_apic_entry(struct madt_io_apic *ioa, __u32 index) |
221 | void madt_io_apic_entry(struct madt_io_apic *ioa, __u32 index) |
222 | { |
222 | { |
223 | if (!madt_io_apic_entry_cnt++) { |
223 | if (!madt_io_apic_entry_cnt++) { |
224 | /* remember index of the first io apic entry */ |
224 | /* remember index of the first io apic entry */ |
225 | madt_io_apic_entry_index = index; |
225 | madt_io_apic_entry_index = index; |
226 | io_apic = (__u32 *) (__native) ioa->io_apic_address; |
226 | io_apic = (__u32 *) (__native) ioa->io_apic_address; |
227 | } else { |
227 | } else { |
228 | /* currently not supported */ |
228 | /* currently not supported */ |
229 | return; |
229 | return; |
230 | } |
230 | } |
231 | } |
231 | } |
232 | 232 | ||
233 | void madt_intr_src_ovrd_entry(struct madt_intr_src_ovrd *override, __u32 index) |
233 | void madt_intr_src_ovrd_entry(struct madt_intr_src_ovrd *override, __u32 index) |
234 | { |
234 | { |
235 | ASSERT(override->source < sizeof(isa_irq_map)/sizeof(int)); |
235 | ASSERT(override->source < sizeof(isa_irq_map)/sizeof(int)); |
236 | printf("MADT: ignoring %s entry: bus=%zd, source=%zd, global_int=%zd, flags=%#hX\n", |
236 | printf("MADT: ignoring %s entry: bus=%zd, source=%zd, global_int=%zd, flags=%#hX\n", |
237 | entry[override->header.type], override->bus, override->source, |
237 | entry[override->header.type], override->bus, override->source, |
238 | override->global_int, override->flags); |
238 | override->global_int, override->flags); |
239 | } |
239 | } |
240 | 240 | ||
241 | #endif /* CONFIG_SMP */ |
241 | #endif /* CONFIG_SMP */ |
242 | 242 |