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