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33 jermar 1
/*
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 * Copyright (C) 2005 Jakub Jermar
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 * 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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34 jermar 29
#include <arch/types.h>
129 jermar 30
#include <typedefs.h>
452 decky 31
#include <genarch/acpi/acpi.h>
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#include <genarch/acpi/madt.h>
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>
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#include <config.h>
195 vana 38
#include <print.h>
310 bondari 39
#include <mm/heap.h>
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#include <memstr.h>
331 bondari 41
#include <sort.h>
33 jermar 42
 
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struct acpi_madt *acpi_madt = NULL;
34 jermar 44
 
458 decky 45
#ifdef CONFIG_SMP
34 jermar 46
 
310 bondari 47
static void madt_l_apic_entry(struct madt_l_apic *la, __u32 index);
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static void madt_io_apic_entry(struct madt_io_apic *ioa, __u32 index);
331 bondari 49
static int madt_cmp(void * a, void * b);
127 jermar 50
 
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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 54
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 59
 
310 bondari 60
struct madt_apic_header * * madt_entries_index = NULL;
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int madt_entries_index_cnt = 0;
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34 jermar 63
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 75
/*
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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);
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static __u8 madt_cpu_apic_id(index_t i);
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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,
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    .cpu_apic_id = madt_cpu_apic_id
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};
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static count_t madt_cpu_count(void)
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{
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    return madt_l_apic_entry_cnt;
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}
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static bool madt_cpu_enabled(index_t i)
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{
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    ASSERT(i < madt_l_apic_entry_cnt);
310 bondari 98
    return ((struct madt_l_apic *) madt_entries_index[madt_l_apic_entry_index + i])->flags & 0x1;
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129 jermar 100
}
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static bool madt_cpu_bootstrap(index_t i)
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{
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    ASSERT(i < madt_l_apic_entry_cnt);
310 bondari 105
    return ((struct madt_l_apic *) madt_entries_index[madt_l_apic_entry_index + i])->apic_id == l_apic_id();
129 jermar 106
}
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static __u8 madt_cpu_apic_id(index_t i)
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{
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    ASSERT(i < madt_l_apic_entry_cnt);
310 bondari 111
    return ((struct madt_l_apic *) madt_entries_index[madt_l_apic_entry_index + i])->apic_id;
129 jermar 112
}
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331 bondari 114
int madt_cmp(void * a, void * b)
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{
349 jermar 116
    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 120
}
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34 jermar 122
void acpi_madt_parse(void)
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{
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    struct madt_apic_header *end = (struct madt_apic_header *) (((__u8 *) acpi_madt) + acpi_madt->header.length);
310 bondari 125
    struct madt_apic_header *h;
311 bondari 126
 
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        l_apic = (__u32 *) (__native) acpi_madt->l_apic_address;
34 jermar 128
 
310 bondari 129
    /* calculate madt entries */
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    for (h = &acpi_madt->apic_header[0]; h < end; h = (struct madt_apic_header *) (((__u8 *) h) + h->length)) {
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        madt_entries_index_cnt++;
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    }
127 jermar 133
 
310 bondari 134
    /* create madt apic entries index array */
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    madt_entries_index = (struct madt_apic_header * *) malloc(madt_entries_index_cnt * sizeof(struct madt_apic_header * *));
34 jermar 136
 
310 bondari 137
    __u32 index = 0;
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    for (h = &acpi_madt->apic_header[0]; h < end; h = (struct madt_apic_header *) (((__u8 *) h) + h->length)) {
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        madt_entries_index[index++] = h;
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    }
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331 bondari 143
    /* Quicksort MADT index structure */
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    qsort(madt_entries_index, madt_entries_index_cnt, sizeof(__address), &madt_cmp);
310 bondari 145
 
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    /* Parse MADT entries */   
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    for (index = 0; index < madt_entries_index_cnt - 1; index++) {
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        h = madt_entries_index[index];
34 jermar 149
        switch (h->type) {
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            case MADT_L_APIC:
310 bondari 151
                madt_l_apic_entry((struct madt_l_apic *) h, index);
127 jermar 152
                break;
34 jermar 153
            case MADT_IO_APIC:
310 bondari 154
                madt_io_apic_entry((struct madt_io_apic *) h, index);
127 jermar 155
                break;
34 jermar 156
            case MADT_INTR_SRC_OVRD:
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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=%d)\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=%d)\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=%d)\n", h->type);
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                }
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                break;
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        }
310 bondari 175
 
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34 jermar 177
    }
310 bondari 178
 
34 jermar 179
 
370 jermar 180
    if (cpu_count)
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        config.cpu_count = cpu_count;
34 jermar 182
}
127 jermar 183
 
310 bondari 184
 
185
void madt_l_apic_entry(struct madt_l_apic *la, __u32 index)
127 jermar 186
{
310 bondari 187
    if (!madt_l_apic_entry_cnt++) {
188
        madt_l_apic_entry_index = index;
189
    }
127 jermar 190
 
191
    if (!(la->flags & 0x1)) {
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        /* Processor is unusable, skip it. */
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        return;
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    }
370 jermar 195
 
196
    cpu_count++;   
127 jermar 197
    apic_id_mask |= 1<<la->apic_id;
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}
199
 
310 bondari 200
void madt_io_apic_entry(struct madt_io_apic *ioa, __u32 index)
127 jermar 201
{
202
    if (!madt_io_apic_entry_cnt++) {
310 bondari 203
        /* remember index of the first io apic entry */
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        madt_io_apic_entry_index = index;
268 palkovsky 205
        io_apic = (__u32 *) (__native) ioa->io_apic_address;
310 bondari 206
    } else {
127 jermar 207
        /* currently not supported */
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        return;
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    }
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}
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212
 
458 decky 213
#endif /* CONFIG_SMP */