| 0,0 → 1,216 |
|---|
| /* |
| * Copyright (C) 2005 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <arch/types.h> |
| #include <typedefs.h> |
| #include <arch/acpi/acpi.h> |
| #include <arch/acpi/madt.h> |
| #include <arch/smp/apic.h> |
| #include <arch/smp/smp.h> |
| #include <panic.h> |
| #include <debug.h> |
| #include <config.h> |
| #include <print.h> |
| #include <mm/heap.h> |
| #include <memstr.h> |
| |
| struct acpi_madt *acpi_madt = NULL; |
| |
| #ifdef __SMP__ |
| |
| static void madt_l_apic_entry(struct madt_l_apic *la, __u32 index); |
| static void madt_io_apic_entry(struct madt_io_apic *ioa, __u32 index); |
| |
| struct madt_l_apic *madt_l_apic_entries = NULL; |
| struct madt_io_apic *madt_io_apic_entries = NULL; |
| |
| __u32 madt_l_apic_entry_index = 0; |
| __u32 madt_io_apic_entry_index = 0; |
| int madt_l_apic_entry_cnt = 0; |
| int madt_io_apic_entry_cnt = 0; |
| |
| struct madt_apic_header * * madt_entries_index = NULL; |
| int madt_entries_index_cnt = 0; |
| |
| char *entry[] = { |
| "L_APIC", |
| "IO_APIC", |
| "INTR_SRC_OVRD", |
| "NMI_SRC", |
| "L_APIC_NMI", |
| "L_APIC_ADDR_OVRD", |
| "IO_SAPIC", |
| "L_SAPIC", |
| "PLATFORM_INTR_SRC" |
| }; |
| |
| /* |
| * ACPI MADT Implementation of SMP configuration interface. |
| */ |
| static count_t madt_cpu_count(void); |
| static bool madt_cpu_enabled(index_t i); |
| static bool madt_cpu_bootstrap(index_t i); |
| static __u8 madt_cpu_apic_id(index_t i); |
| |
| struct smp_config_operations madt_config_operations = { |
| .cpu_count = madt_cpu_count, |
| .cpu_enabled = madt_cpu_enabled, |
| .cpu_bootstrap = madt_cpu_bootstrap, |
| .cpu_apic_id = madt_cpu_apic_id |
| }; |
| |
| static count_t madt_cpu_count(void) |
| { |
| return madt_l_apic_entry_cnt; |
| } |
| |
| static bool madt_cpu_enabled(index_t i) |
| { |
| ASSERT(i < madt_l_apic_entry_cnt); |
| return ((struct madt_l_apic *) madt_entries_index[madt_l_apic_entry_index + i])->flags & 0x1; |
| |
| } |
| |
| static bool madt_cpu_bootstrap(index_t i) |
| { |
| ASSERT(i < madt_l_apic_entry_cnt); |
| return ((struct madt_l_apic *) madt_entries_index[madt_l_apic_entry_index + i])->apic_id == l_apic_id(); |
| } |
| |
| static __u8 madt_cpu_apic_id(index_t i) |
| { |
| ASSERT(i < madt_l_apic_entry_cnt); |
| return ((struct madt_l_apic *) madt_entries_index[madt_l_apic_entry_index + i])->apic_id; |
| } |
| |
| void acpi_madt_parse(void) |
| { |
| struct madt_apic_header *end = (struct madt_apic_header *) (((__u8 *) acpi_madt) + acpi_madt->header.length); |
| struct madt_apic_header *h; |
| |
| /* calculate madt entries */ |
| for (h = &acpi_madt->apic_header[0]; h < end; h = (struct madt_apic_header *) (((__u8 *) h) + h->length)) { |
| madt_entries_index_cnt++; |
| } |
| printf("MADT: Found %d entries\n", madt_entries_index_cnt); |
| |
| /* create madt apic entries index array */ |
| madt_entries_index = (struct madt_apic_header * *) malloc(madt_entries_index_cnt * sizeof(struct madt_apic_header * *)); |
| |
| __u32 index = 0; |
| |
| for (h = &acpi_madt->apic_header[0]; h < end; h = (struct madt_apic_header *) (((__u8 *) h) + h->length)) { |
| madt_entries_index[index++] = h; |
| } |
| |
| |
| /* Bublesort madt index. Quicksort later. */ |
| bool done = false; |
| |
| while (!done) { |
| done = true; |
| for (index = 0; index < madt_entries_index_cnt - 1; index++) { |
| if (madt_entries_index[index]->type > madt_entries_index[index + 1]->type) { |
| h = madt_entries_index[index]; |
| madt_entries_index[index] = madt_entries_index[index + 1]; |
| madt_entries_index[index + 1] = h; |
| done = false; |
| } |
| } |
| |
| } |
| |
| |
| /* Parse MADT entries */ |
| for (index = 0; index < madt_entries_index_cnt - 1; index++) { |
| h = madt_entries_index[index]; |
| switch (h->type) { |
| case MADT_L_APIC: |
| madt_l_apic_entry((struct madt_l_apic *) h, index); |
| break; |
| case MADT_IO_APIC: |
| madt_io_apic_entry((struct madt_io_apic *) h, index); |
| break; |
| case MADT_INTR_SRC_OVRD: |
| case MADT_NMI_SRC: |
| case MADT_L_APIC_NMI: |
| case MADT_L_APIC_ADDR_OVRD: |
| case MADT_IO_SAPIC: |
| case MADT_L_SAPIC: |
| case MADT_PLATFORM_INTR_SRC: |
| printf("MADT: skipping %s entry (type=%d)\n", entry[h->type], h->type); |
| break; |
| |
| default: |
| if (h->type >= MADT_RESERVED_SKIP_BEGIN && h->type <= MADT_RESERVED_SKIP_END) { |
| printf("MADT: skipping reserved entry (type=%d)\n", h->type); |
| } |
| if (h->type >= MADT_RESERVED_OEM_BEGIN) { |
| printf("MADT: skipping OEM entry (type=%d)\n", h->type); |
| } |
| break; |
| } |
| |
| |
| } |
| |
| |
| if (madt_l_apic_entry_cnt) |
| config.cpu_count = madt_l_apic_entry_cnt; |
| } |
| |
| |
| void madt_l_apic_entry(struct madt_l_apic *la, __u32 index) |
| { |
| if (!madt_l_apic_entry_cnt++) { |
| madt_l_apic_entry_index = index; |
| } |
| |
| if (!(la->flags & 0x1)) { |
| /* Processor is unusable, skip it. */ |
| return; |
| } |
| |
| apic_id_mask |= 1<<la->apic_id; |
| } |
| |
| void madt_io_apic_entry(struct madt_io_apic *ioa, __u32 index) |
| { |
| if (!madt_io_apic_entry_cnt++) { |
| /* remember index of the first io apic entry */ |
| madt_io_apic_entry_index = index; |
| /* ????!!!! */ |
| io_apic = (__u32 *) (__native) ioa->io_apic_address; |
| } else { |
| /* currently not supported */ |
| return; |
| } |
| } |
| |
| |
| #endif /* __SMP__ */ |