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33 jermar 1
/*
2071 jermar 2
 * Copyright (c) 2005 Jakub Jermar
33 jermar 3
 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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1888 jermar 29
/** @addtogroup genarch
1702 cejka 30
 * @{
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 */
1266 jermar 32
/**
1704 cejka 33
 * @file
1266 jermar 34
 * @brief   Multiple APIC Description Table (MADT) parsing.
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 */
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34 jermar 37
#include <arch/types.h>
452 decky 38
#include <genarch/acpi/acpi.h>
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#include <genarch/acpi/madt.h>
34 jermar 40
#include <arch/smp/apic.h>
129 jermar 41
#include <arch/smp/smp.h>
127 jermar 42
#include <panic.h>
129 jermar 43
#include <debug.h>
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#include <config.h>
195 vana 45
#include <print.h>
814 palkovsky 46
#include <mm/slab.h>
310 bondari 47
#include <memstr.h>
331 bondari 48
#include <sort.h>
33 jermar 49
 
50
struct acpi_madt *acpi_madt = NULL;
34 jermar 51
 
458 decky 52
#ifdef CONFIG_SMP
34 jermar 53
 
512 jermar 54
/** Standard ISA IRQ map; can be overriden by Interrupt Source Override entries of MADT. */
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int isa_irq_map[] = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 };
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1780 jermar 57
static void madt_l_apic_entry(struct madt_l_apic *la, uint32_t index);
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static void madt_io_apic_entry(struct madt_io_apic *ioa, uint32_t index);
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static void madt_intr_src_ovrd_entry(struct madt_intr_src_ovrd *override, uint32_t index);
331 bondari 60
static int madt_cmp(void * a, void * b);
127 jermar 61
 
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struct madt_l_apic *madt_l_apic_entries = NULL;
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struct madt_io_apic *madt_io_apic_entries = NULL;
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370 jermar 65
index_t madt_l_apic_entry_index = 0;
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index_t madt_io_apic_entry_index = 0;
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count_t madt_l_apic_entry_cnt = 0;
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count_t madt_io_apic_entry_cnt = 0;
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count_t cpu_count = 0;
127 jermar 70
 
310 bondari 71
struct madt_apic_header * * madt_entries_index = NULL;
2101 decky 72
unsigned int madt_entries_index_cnt = 0;
310 bondari 73
 
34 jermar 74
char *entry[] = {
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    "L_APIC",
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    "IO_APIC",
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    "INTR_SRC_OVRD",
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    "NMI_SRC",
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    "L_APIC_NMI",
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    "L_APIC_ADDR_OVRD",
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    "IO_SAPIC",
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    "L_SAPIC",
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    "PLATFORM_INTR_SRC"
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};
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129 jermar 86
/*
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 * ACPI MADT Implementation of SMP configuration interface.
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 */
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static count_t madt_cpu_count(void);
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static bool madt_cpu_enabled(index_t i);
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static bool madt_cpu_bootstrap(index_t i);
1780 jermar 92
static uint8_t madt_cpu_apic_id(index_t i);
2101 decky 93
static int madt_irq_to_pin(unsigned int irq);
129 jermar 94
 
95
struct smp_config_operations madt_config_operations = {
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    .cpu_count = madt_cpu_count,
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    .cpu_enabled = madt_cpu_enabled,
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    .cpu_bootstrap = madt_cpu_bootstrap,
512 jermar 99
    .cpu_apic_id = madt_cpu_apic_id,
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    .irq_to_pin = madt_irq_to_pin
129 jermar 101
};
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512 jermar 103
count_t madt_cpu_count(void)
129 jermar 104
{
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    return madt_l_apic_entry_cnt;
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}
107
 
512 jermar 108
bool madt_cpu_enabled(index_t i)
129 jermar 109
{
110
    ASSERT(i < madt_l_apic_entry_cnt);
310 bondari 111
    return ((struct madt_l_apic *) madt_entries_index[madt_l_apic_entry_index + i])->flags & 0x1;
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129 jermar 113
}
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512 jermar 115
bool madt_cpu_bootstrap(index_t i)
129 jermar 116
{
117
    ASSERT(i < madt_l_apic_entry_cnt);
310 bondari 118
    return ((struct madt_l_apic *) madt_entries_index[madt_l_apic_entry_index + i])->apic_id == l_apic_id();
129 jermar 119
}
120
 
1780 jermar 121
uint8_t madt_cpu_apic_id(index_t i)
129 jermar 122
{
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    ASSERT(i < madt_l_apic_entry_cnt);
310 bondari 124
    return ((struct madt_l_apic *) madt_entries_index[madt_l_apic_entry_index + i])->apic_id;
129 jermar 125
}
126
 
2101 decky 127
int madt_irq_to_pin(unsigned int irq)
512 jermar 128
{
129
    ASSERT(irq < sizeof(isa_irq_map)/sizeof(int));
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        return isa_irq_map[irq];
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}
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331 bondari 133
int madt_cmp(void * a, void * b)
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{
349 jermar 135
    return
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        (((struct madt_apic_header *) a)->type > ((struct madt_apic_header *) b)->type) ?
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        1 :
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        ((((struct madt_apic_header *) a)->type < ((struct madt_apic_header *) b)->type) ? -1 : 0);
331 bondari 139
}
140
 
34 jermar 141
void acpi_madt_parse(void)
142
{
1780 jermar 143
    struct madt_apic_header *end = (struct madt_apic_header *) (((uint8_t *) acpi_madt) + acpi_madt->header.length);
310 bondari 144
    struct madt_apic_header *h;
311 bondari 145
 
2101 decky 146
    l_apic = (uint32_t *) (unative_t) acpi_madt->l_apic_address;
34 jermar 147
 
310 bondari 148
    /* calculate madt entries */
1780 jermar 149
    for (h = &acpi_madt->apic_header[0]; h < end; h = (struct madt_apic_header *) (((uint8_t *) h) + h->length)) {
310 bondari 150
        madt_entries_index_cnt++;
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    }
127 jermar 152
 
310 bondari 153
    /* create madt apic entries index array */
822 palkovsky 154
    madt_entries_index = (struct madt_apic_header * *) malloc(madt_entries_index_cnt * sizeof(struct madt_apic_header * *), FRAME_ATOMIC);
155
    if (!madt_entries_index)
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        panic("Memory allocation error.");
34 jermar 157
 
1780 jermar 158
    uint32_t index = 0;
310 bondari 159
 
1780 jermar 160
    for (h = &acpi_madt->apic_header[0]; h < end; h = (struct madt_apic_header *) (((uint8_t *) h) + h->length)) {
310 bondari 161
        madt_entries_index[index++] = h;
162
    }
163
 
331 bondari 164
    /* Quicksort MADT index structure */
1780 jermar 165
    qsort(madt_entries_index, madt_entries_index_cnt, sizeof(uintptr_t), &madt_cmp);
310 bondari 166
 
2101 decky 167
    /* Parse MADT entries */
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    if (madt_entries_index_cnt > 0) {  
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        for (index = 0; index < madt_entries_index_cnt - 1; index++) {
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            h = madt_entries_index[index];
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            switch (h->type) {
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                case MADT_L_APIC:
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                    madt_l_apic_entry((struct madt_l_apic *) h, index);
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                    break;
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                case MADT_IO_APIC:
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                    madt_io_apic_entry((struct madt_io_apic *) h, index);
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                    break;
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                case MADT_INTR_SRC_OVRD:
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                    madt_intr_src_ovrd_entry((struct madt_intr_src_ovrd *) h, index);
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                    break;
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                case MADT_NMI_SRC:
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                case MADT_L_APIC_NMI:
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                case MADT_L_APIC_ADDR_OVRD:
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                case MADT_IO_SAPIC:
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                case MADT_L_SAPIC:
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                case MADT_PLATFORM_INTR_SRC:
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                    printf("MADT: skipping %s entry (type=%zd)\n", entry[h->type], h->type);
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                    break;
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                default:
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                    if (h->type >= MADT_RESERVED_SKIP_BEGIN && h->type <= MADT_RESERVED_SKIP_END) {
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                        printf("MADT: skipping reserved entry (type=%zd)\n", h->type);
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                    }
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                    if (h->type >= MADT_RESERVED_OEM_BEGIN) {
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                        printf("MADT: skipping OEM entry (type=%zd)\n", h->type);
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                    }
197
                    break;
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            }
34 jermar 199
        }
200
    }
201
 
370 jermar 202
    if (cpu_count)
203
        config.cpu_count = cpu_count;
34 jermar 204
}
127 jermar 205
 
310 bondari 206
 
1780 jermar 207
void madt_l_apic_entry(struct madt_l_apic *la, uint32_t index)
127 jermar 208
{
310 bondari 209
    if (!madt_l_apic_entry_cnt++) {
210
        madt_l_apic_entry_index = index;
211
    }
127 jermar 212
 
213
    if (!(la->flags & 0x1)) {
214
        /* Processor is unusable, skip it. */
215
        return;
216
    }
370 jermar 217
 
218
    cpu_count++;   
127 jermar 219
    apic_id_mask |= 1<<la->apic_id;
220
}
221
 
1780 jermar 222
void madt_io_apic_entry(struct madt_io_apic *ioa, uint32_t index)
127 jermar 223
{
224
    if (!madt_io_apic_entry_cnt++) {
310 bondari 225
        /* remember index of the first io apic entry */
226
        madt_io_apic_entry_index = index;
1780 jermar 227
        io_apic = (uint32_t *) (unative_t) ioa->io_apic_address;
310 bondari 228
    } else {
127 jermar 229
        /* currently not supported */
230
        return;
231
    }
232
}
233
 
1780 jermar 234
void madt_intr_src_ovrd_entry(struct madt_intr_src_ovrd *override, uint32_t index)
512 jermar 235
{
236
    ASSERT(override->source < sizeof(isa_irq_map)/sizeof(int));
1735 decky 237
    printf("MADT: ignoring %s entry: bus=%zd, source=%zd, global_int=%zd, flags=%#hx\n",
515 jermar 238
        entry[override->header.type], override->bus, override->source,
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        override->global_int, override->flags);
512 jermar 240
}
127 jermar 241
 
458 decky 242
#endif /* CONFIG_SMP */
1702 cejka 243
 
1888 jermar 244
/** @}
1702 cejka 245
 */