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33 | jermar | 1 | /* |
2 | * Copyright (C) 2005 Jakub Jermar |
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3 | * All rights reserved. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
34 | jermar | 29 | #include <arch/types.h> |
129 | jermar | 30 | #include <typedefs.h> |
452 | decky | 31 | #include <genarch/acpi/acpi.h> |
32 | #include <genarch/acpi/madt.h> |
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34 | jermar | 33 | #include <arch/smp/apic.h> |
129 | jermar | 34 | #include <arch/smp/smp.h> |
127 | jermar | 35 | #include <panic.h> |
129 | jermar | 36 | #include <debug.h> |
37 | #include <config.h> |
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195 | vana | 38 | #include <print.h> |
310 | bondari | 39 | #include <mm/heap.h> |
40 | #include <memstr.h> |
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331 | bondari | 41 | #include <sort.h> |
33 | jermar | 42 | |
43 | struct acpi_madt *acpi_madt = NULL; |
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34 | jermar | 44 | |
458 | decky | 45 | #ifdef CONFIG_SMP |
34 | jermar | 46 | |
512 | jermar | 47 | /** Standard ISA IRQ map; can be overriden by Interrupt Source Override entries of MADT. */ |
48 | int isa_irq_map[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 }; |
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49 | |||
310 | bondari | 50 | static void madt_l_apic_entry(struct madt_l_apic *la, __u32 index); |
51 | static void madt_io_apic_entry(struct madt_io_apic *ioa, __u32 index); |
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512 | jermar | 52 | static void madt_intr_src_ovrd_entry(struct madt_intr_src_ovrd *override, __u32 index); |
331 | bondari | 53 | static int madt_cmp(void * a, void * b); |
127 | jermar | 54 | |
55 | struct madt_l_apic *madt_l_apic_entries = NULL; |
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56 | struct madt_io_apic *madt_io_apic_entries = NULL; |
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57 | |||
370 | jermar | 58 | index_t madt_l_apic_entry_index = 0; |
59 | index_t madt_io_apic_entry_index = 0; |
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60 | count_t madt_l_apic_entry_cnt = 0; |
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61 | count_t madt_io_apic_entry_cnt = 0; |
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62 | count_t cpu_count = 0; |
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127 | jermar | 63 | |
310 | bondari | 64 | struct madt_apic_header * * madt_entries_index = NULL; |
65 | int madt_entries_index_cnt = 0; |
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66 | |||
34 | jermar | 67 | char *entry[] = { |
68 | "L_APIC", |
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69 | "IO_APIC", |
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70 | "INTR_SRC_OVRD", |
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71 | "NMI_SRC", |
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72 | "L_APIC_NMI", |
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73 | "L_APIC_ADDR_OVRD", |
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74 | "IO_SAPIC", |
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75 | "L_SAPIC", |
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76 | "PLATFORM_INTR_SRC" |
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77 | }; |
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78 | |||
129 | jermar | 79 | /* |
80 | * ACPI MADT Implementation of SMP configuration interface. |
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81 | */ |
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82 | static count_t madt_cpu_count(void); |
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83 | static bool madt_cpu_enabled(index_t i); |
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84 | static bool madt_cpu_bootstrap(index_t i); |
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85 | static __u8 madt_cpu_apic_id(index_t i); |
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512 | jermar | 86 | static int madt_irq_to_pin(int irq); |
129 | jermar | 87 | |
88 | struct smp_config_operations madt_config_operations = { |
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89 | .cpu_count = madt_cpu_count, |
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90 | .cpu_enabled = madt_cpu_enabled, |
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91 | .cpu_bootstrap = madt_cpu_bootstrap, |
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512 | jermar | 92 | .cpu_apic_id = madt_cpu_apic_id, |
93 | .irq_to_pin = madt_irq_to_pin |
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129 | jermar | 94 | }; |
95 | |||
512 | jermar | 96 | count_t madt_cpu_count(void) |
129 | jermar | 97 | { |
98 | return madt_l_apic_entry_cnt; |
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99 | } |
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100 | |||
512 | jermar | 101 | bool madt_cpu_enabled(index_t i) |
129 | jermar | 102 | { |
103 | ASSERT(i < madt_l_apic_entry_cnt); |
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310 | bondari | 104 | return ((struct madt_l_apic *) madt_entries_index[madt_l_apic_entry_index + i])->flags & 0x1; |
105 | |||
129 | jermar | 106 | } |
107 | |||
512 | jermar | 108 | bool madt_cpu_bootstrap(index_t i) |
129 | jermar | 109 | { |
110 | ASSERT(i < madt_l_apic_entry_cnt); |
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310 | bondari | 111 | return ((struct madt_l_apic *) madt_entries_index[madt_l_apic_entry_index + i])->apic_id == l_apic_id(); |
129 | jermar | 112 | } |
113 | |||
512 | jermar | 114 | __u8 madt_cpu_apic_id(index_t i) |
129 | jermar | 115 | { |
116 | ASSERT(i < madt_l_apic_entry_cnt); |
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310 | bondari | 117 | return ((struct madt_l_apic *) madt_entries_index[madt_l_apic_entry_index + i])->apic_id; |
129 | jermar | 118 | } |
119 | |||
512 | jermar | 120 | int madt_irq_to_pin(int irq) |
121 | { |
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122 | ASSERT(irq < sizeof(isa_irq_map)/sizeof(int)); |
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123 | return isa_irq_map[irq]; |
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124 | } |
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125 | |||
331 | bondari | 126 | int madt_cmp(void * a, void * b) |
127 | { |
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349 | jermar | 128 | return |
129 | (((struct madt_apic_header *) a)->type > ((struct madt_apic_header *) b)->type) ? |
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130 | 1 : |
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131 | ((((struct madt_apic_header *) a)->type < ((struct madt_apic_header *) b)->type) ? -1 : 0); |
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331 | bondari | 132 | } |
133 | |||
34 | jermar | 134 | void acpi_madt_parse(void) |
135 | { |
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136 | struct madt_apic_header *end = (struct madt_apic_header *) (((__u8 *) acpi_madt) + acpi_madt->header.length); |
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310 | bondari | 137 | struct madt_apic_header *h; |
311 | bondari | 138 | |
139 | l_apic = (__u32 *) (__native) acpi_madt->l_apic_address; |
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34 | jermar | 140 | |
310 | bondari | 141 | /* calculate madt entries */ |
142 | for (h = &acpi_madt->apic_header[0]; h < end; h = (struct madt_apic_header *) (((__u8 *) h) + h->length)) { |
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143 | madt_entries_index_cnt++; |
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144 | } |
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127 | jermar | 145 | |
310 | bondari | 146 | /* create madt apic entries index array */ |
147 | madt_entries_index = (struct madt_apic_header * *) malloc(madt_entries_index_cnt * sizeof(struct madt_apic_header * *)); |
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34 | jermar | 148 | |
310 | bondari | 149 | __u32 index = 0; |
150 | |||
151 | for (h = &acpi_madt->apic_header[0]; h < end; h = (struct madt_apic_header *) (((__u8 *) h) + h->length)) { |
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152 | madt_entries_index[index++] = h; |
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153 | } |
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154 | |||
331 | bondari | 155 | /* Quicksort MADT index structure */ |
156 | qsort(madt_entries_index, madt_entries_index_cnt, sizeof(__address), &madt_cmp); |
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310 | bondari | 157 | |
158 | /* Parse MADT entries */ |
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159 | for (index = 0; index < madt_entries_index_cnt - 1; index++) { |
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160 | h = madt_entries_index[index]; |
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34 | jermar | 161 | switch (h->type) { |
162 | case MADT_L_APIC: |
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310 | bondari | 163 | madt_l_apic_entry((struct madt_l_apic *) h, index); |
127 | jermar | 164 | break; |
34 | jermar | 165 | case MADT_IO_APIC: |
310 | bondari | 166 | madt_io_apic_entry((struct madt_io_apic *) h, index); |
127 | jermar | 167 | break; |
34 | jermar | 168 | case MADT_INTR_SRC_OVRD: |
512 | jermar | 169 | madt_intr_src_ovrd_entry((struct madt_intr_src_ovrd *) h, index); |
170 | break; |
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34 | jermar | 171 | case MADT_NMI_SRC: |
172 | case MADT_L_APIC_NMI: |
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173 | case MADT_L_APIC_ADDR_OVRD: |
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174 | case MADT_IO_SAPIC: |
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175 | case MADT_L_SAPIC: |
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176 | case MADT_PLATFORM_INTR_SRC: |
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177 | printf("MADT: skipping %s entry (type=%d)\n", entry[h->type], h->type); |
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178 | break; |
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179 | |||
180 | default: |
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181 | if (h->type >= MADT_RESERVED_SKIP_BEGIN && h->type <= MADT_RESERVED_SKIP_END) { |
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182 | printf("MADT: skipping reserved entry (type=%d)\n", h->type); |
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183 | } |
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184 | if (h->type >= MADT_RESERVED_OEM_BEGIN) { |
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185 | printf("MADT: skipping OEM entry (type=%d)\n", h->type); |
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186 | } |
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187 | break; |
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188 | } |
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310 | bondari | 189 | |
190 | |||
34 | jermar | 191 | } |
310 | bondari | 192 | |
34 | jermar | 193 | |
370 | jermar | 194 | if (cpu_count) |
195 | config.cpu_count = cpu_count; |
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34 | jermar | 196 | } |
127 | jermar | 197 | |
310 | bondari | 198 | |
199 | void madt_l_apic_entry(struct madt_l_apic *la, __u32 index) |
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127 | jermar | 200 | { |
310 | bondari | 201 | if (!madt_l_apic_entry_cnt++) { |
202 | madt_l_apic_entry_index = index; |
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203 | } |
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127 | jermar | 204 | |
205 | if (!(la->flags & 0x1)) { |
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206 | /* Processor is unusable, skip it. */ |
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207 | return; |
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208 | } |
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370 | jermar | 209 | |
210 | cpu_count++; |
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127 | jermar | 211 | apic_id_mask |= 1<<la->apic_id; |
212 | } |
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213 | |||
310 | bondari | 214 | void madt_io_apic_entry(struct madt_io_apic *ioa, __u32 index) |
127 | jermar | 215 | { |
216 | if (!madt_io_apic_entry_cnt++) { |
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310 | bondari | 217 | /* remember index of the first io apic entry */ |
218 | madt_io_apic_entry_index = index; |
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268 | palkovsky | 219 | io_apic = (__u32 *) (__native) ioa->io_apic_address; |
310 | bondari | 220 | } else { |
127 | jermar | 221 | /* currently not supported */ |
222 | return; |
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223 | } |
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224 | } |
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225 | |||
512 | jermar | 226 | void madt_intr_src_ovrd_entry(struct madt_intr_src_ovrd *override, __u32 index) |
227 | { |
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228 | ASSERT(override->source < sizeof(isa_irq_map)/sizeof(int)); |
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229 | printf("Remapping irq%d to IO APIC pin%d\n", override->source, override->global_intr); |
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230 | isa_irq_map[override->source] = override->global_intr; |
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231 | |||
232 | } |
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127 | jermar | 233 | |
458 | decky | 234 | #endif /* CONFIG_SMP */ |