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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> |
| 33 | jermar | 31 | #include <arch/acpi/acpi.h> |
| 32 | #include <arch/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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| 33 | jermar | 41 | |
| 42 | struct acpi_madt *acpi_madt = NULL; |
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| 34 | jermar | 43 | |
| 44 | #ifdef __SMP__ |
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| 45 | |||
| 310 | bondari | 46 | static void madt_l_apic_entry(struct madt_l_apic *la, __u32 index); |
| 47 | static void madt_io_apic_entry(struct madt_io_apic *ioa, __u32 index); |
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| 127 | jermar | 48 | |
| 49 | struct madt_l_apic *madt_l_apic_entries = NULL; |
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| 50 | struct madt_io_apic *madt_io_apic_entries = NULL; |
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| 51 | |||
| 310 | bondari | 52 | __u32 madt_l_apic_entry_index = 0; |
| 53 | __u32 madt_io_apic_entry_index = 0; |
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| 127 | jermar | 54 | int madt_l_apic_entry_cnt = 0; |
| 55 | int madt_io_apic_entry_cnt = 0; |
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| 56 | |||
| 310 | bondari | 57 | struct madt_apic_header * * madt_entries_index = NULL; |
| 58 | int madt_entries_index_cnt = 0; |
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| 59 | |||
| 34 | jermar | 60 | char *entry[] = { |
| 61 | "L_APIC", |
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| 62 | "IO_APIC", |
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| 63 | "INTR_SRC_OVRD", |
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| 64 | "NMI_SRC", |
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| 65 | "L_APIC_NMI", |
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| 66 | "L_APIC_ADDR_OVRD", |
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| 67 | "IO_SAPIC", |
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| 68 | "L_SAPIC", |
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| 69 | "PLATFORM_INTR_SRC" |
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| 70 | }; |
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| 71 | |||
| 129 | jermar | 72 | /* |
| 73 | * ACPI MADT Implementation of SMP configuration interface. |
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| 74 | */ |
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| 75 | static count_t madt_cpu_count(void); |
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| 76 | static bool madt_cpu_enabled(index_t i); |
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| 77 | static bool madt_cpu_bootstrap(index_t i); |
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| 78 | static __u8 madt_cpu_apic_id(index_t i); |
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| 79 | |||
| 80 | struct smp_config_operations madt_config_operations = { |
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| 81 | .cpu_count = madt_cpu_count, |
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| 82 | .cpu_enabled = madt_cpu_enabled, |
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| 83 | .cpu_bootstrap = madt_cpu_bootstrap, |
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| 84 | .cpu_apic_id = madt_cpu_apic_id |
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| 85 | }; |
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| 86 | |||
| 87 | static count_t madt_cpu_count(void) |
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| 88 | { |
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| 89 | return madt_l_apic_entry_cnt; |
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| 90 | } |
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| 91 | |||
| 92 | static bool madt_cpu_enabled(index_t i) |
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| 93 | { |
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| 94 | ASSERT(i < madt_l_apic_entry_cnt); |
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| 310 | bondari | 95 | return ((struct madt_l_apic *) madt_entries_index[madt_l_apic_entry_index + i])->flags & 0x1; |
| 96 | |||
| 129 | jermar | 97 | } |
| 98 | |||
| 99 | static bool madt_cpu_bootstrap(index_t i) |
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| 100 | { |
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| 101 | ASSERT(i < madt_l_apic_entry_cnt); |
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| 310 | bondari | 102 | return ((struct madt_l_apic *) madt_entries_index[madt_l_apic_entry_index + i])->apic_id == l_apic_id(); |
| 129 | jermar | 103 | } |
| 104 | |||
| 105 | static __u8 madt_cpu_apic_id(index_t i) |
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| 106 | { |
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| 107 | ASSERT(i < madt_l_apic_entry_cnt); |
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| 310 | bondari | 108 | return ((struct madt_l_apic *) madt_entries_index[madt_l_apic_entry_index + i])->apic_id; |
| 129 | jermar | 109 | } |
| 110 | |||
| 34 | jermar | 111 | void acpi_madt_parse(void) |
| 112 | { |
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| 113 | struct madt_apic_header *end = (struct madt_apic_header *) (((__u8 *) acpi_madt) + acpi_madt->header.length); |
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| 310 | bondari | 114 | struct madt_apic_header *h; |
| 311 | bondari | 115 | |
| 116 | l_apic = (__u32 *) (__native) acpi_madt->l_apic_address; |
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| 34 | jermar | 117 | |
| 310 | bondari | 118 | /* calculate madt entries */ |
| 119 | for (h = &acpi_madt->apic_header[0]; h < end; h = (struct madt_apic_header *) (((__u8 *) h) + h->length)) { |
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| 120 | madt_entries_index_cnt++; |
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| 121 | } |
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| 122 | printf("MADT: Found %d entries\n", madt_entries_index_cnt); |
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| 127 | jermar | 123 | |
| 310 | bondari | 124 | /* create madt apic entries index array */ |
| 125 | madt_entries_index = (struct madt_apic_header * *) malloc(madt_entries_index_cnt * sizeof(struct madt_apic_header * *)); |
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| 34 | jermar | 126 | |
| 310 | bondari | 127 | __u32 index = 0; |
| 128 | |||
| 129 | for (h = &acpi_madt->apic_header[0]; h < end; h = (struct madt_apic_header *) (((__u8 *) h) + h->length)) { |
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| 130 | madt_entries_index[index++] = h; |
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| 131 | } |
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| 132 | |||
| 133 | |||
| 134 | /* Bublesort madt index. Quicksort later. */ |
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| 135 | bool done = false; |
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| 136 | |||
| 137 | while (!done) { |
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| 138 | done = true; |
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| 139 | for (index = 0; index < madt_entries_index_cnt - 1; index++) { |
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| 140 | if (madt_entries_index[index]->type > madt_entries_index[index + 1]->type) { |
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| 141 | h = madt_entries_index[index]; |
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| 142 | madt_entries_index[index] = madt_entries_index[index + 1]; |
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| 143 | madt_entries_index[index + 1] = h; |
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| 144 | done = false; |
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| 145 | } |
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| 146 | } |
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| 147 | |||
| 148 | } |
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| 149 | |||
| 150 | |||
| 151 | /* Parse MADT entries */ |
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| 152 | for (index = 0; index < madt_entries_index_cnt - 1; index++) { |
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| 153 | h = madt_entries_index[index]; |
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| 34 | jermar | 154 | switch (h->type) { |
| 155 | case MADT_L_APIC: |
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| 310 | bondari | 156 | madt_l_apic_entry((struct madt_l_apic *) h, index); |
| 127 | jermar | 157 | break; |
| 34 | jermar | 158 | case MADT_IO_APIC: |
| 310 | bondari | 159 | madt_io_apic_entry((struct madt_io_apic *) h, index); |
| 127 | jermar | 160 | break; |
| 34 | jermar | 161 | case MADT_INTR_SRC_OVRD: |
| 162 | case MADT_NMI_SRC: |
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| 163 | case MADT_L_APIC_NMI: |
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| 164 | case MADT_L_APIC_ADDR_OVRD: |
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| 165 | case MADT_IO_SAPIC: |
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| 166 | case MADT_L_SAPIC: |
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| 167 | case MADT_PLATFORM_INTR_SRC: |
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| 168 | printf("MADT: skipping %s entry (type=%d)\n", entry[h->type], h->type); |
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| 169 | break; |
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| 170 | |||
| 171 | default: |
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| 172 | if (h->type >= MADT_RESERVED_SKIP_BEGIN && h->type <= MADT_RESERVED_SKIP_END) { |
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| 173 | printf("MADT: skipping reserved entry (type=%d)\n", h->type); |
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| 174 | } |
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| 175 | if (h->type >= MADT_RESERVED_OEM_BEGIN) { |
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| 176 | printf("MADT: skipping OEM entry (type=%d)\n", h->type); |
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| 177 | } |
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| 178 | break; |
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| 179 | } |
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| 310 | bondari | 180 | |
| 181 | |||
| 34 | jermar | 182 | } |
| 310 | bondari | 183 | |
| 34 | jermar | 184 | |
| 129 | jermar | 185 | if (madt_l_apic_entry_cnt) |
| 186 | config.cpu_count = madt_l_apic_entry_cnt; |
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| 34 | jermar | 187 | } |
| 127 | jermar | 188 | |
| 310 | bondari | 189 | |
| 190 | void madt_l_apic_entry(struct madt_l_apic *la, __u32 index) |
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| 127 | jermar | 191 | { |
| 310 | bondari | 192 | if (!madt_l_apic_entry_cnt++) { |
| 193 | madt_l_apic_entry_index = index; |
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| 194 | } |
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| 127 | jermar | 195 | |
| 196 | if (!(la->flags & 0x1)) { |
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| 197 | /* Processor is unusable, skip it. */ |
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| 198 | return; |
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| 199 | } |
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| 200 | |||
| 201 | apic_id_mask |= 1<<la->apic_id; |
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| 202 | } |
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| 203 | |||
| 310 | bondari | 204 | void madt_io_apic_entry(struct madt_io_apic *ioa, __u32 index) |
| 127 | jermar | 205 | { |
| 206 | if (!madt_io_apic_entry_cnt++) { |
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| 310 | bondari | 207 | /* remember index of the first io apic entry */ |
| 208 | madt_io_apic_entry_index = index; |
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| 268 | palkovsky | 209 | io_apic = (__u32 *) (__native) ioa->io_apic_address; |
| 310 | bondari | 210 | } else { |
| 127 | jermar | 211 | /* currently not supported */ |
| 212 | return; |
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| 213 | } |
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| 214 | } |
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| 215 | |||
| 216 | |||
| 34 | jermar | 217 | #endif /* __SMP__ */ |