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author | Igor Mammedov <imammedo@redhat.com> | 2021-09-24 08:27:51 -0400 |
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committer | Michael S. Tsirkin <mst@redhat.com> | 2021-10-05 17:30:57 -0400 |
commit | dd092b9c6008149785d7789c729f468fb762aa0b (patch) | |
tree | 8f7e200f9aae187a67d7c666c63a854ff894f35c /hw/i386 | |
parent | d0aa026a498cdd4e082f12618767f19a2532712a (diff) | |
download | qemu-dd092b9c6008149785d7789c729f468fb762aa0b.zip qemu-dd092b9c6008149785d7789c729f468fb762aa0b.tar.gz qemu-dd092b9c6008149785d7789c729f468fb762aa0b.tar.bz2 |
acpi: x86: madt: use build_append_int_noprefix() API to compose MADT table
Drop usage of packed structures and explicit endian conversions
when building MADT table for arm/x86 and use endian agnostic
build_append_int_noprefix() API to build it.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Message-Id: <20210924122802.1455362-25-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/i386')
-rw-r--r-- | hw/i386/acpi-common.c | 129 |
1 files changed, 67 insertions, 62 deletions
diff --git a/hw/i386/acpi-common.c b/hw/i386/acpi-common.c index 7983a13..4aaafbd 100644 --- a/hw/i386/acpi-common.c +++ b/hw/i386/acpi-common.c @@ -38,7 +38,9 @@ void pc_madt_cpu_entry(AcpiDeviceIf *adev, int uid, bool force_enabled) { uint32_t apic_id = apic_ids->cpus[uid].arch_id; - uint32_t flags = apic_ids->cpus[uid].cpu != NULL || force_enabled ? 1 : 0; + /* Flags – Local APIC Flags */ + uint32_t flags = apic_ids->cpus[uid].cpu != NULL || force_enabled ? + 1 /* Enabled */ : 0; /* ACPI spec says that LAPIC entry for non present * CPU may be omitted from MADT or it must be marked @@ -47,24 +49,47 @@ void pc_madt_cpu_entry(AcpiDeviceIf *adev, int uid, * should be put in MADT but kept disabled. */ if (apic_id < 255) { - AcpiMadtProcessorApic *apic = acpi_data_push(entry, sizeof *apic); - - apic->type = ACPI_APIC_PROCESSOR; - apic->length = sizeof(*apic); - apic->processor_id = uid; - apic->local_apic_id = apic_id; - apic->flags = cpu_to_le32(flags); + /* Rev 1.0b, Table 5-13 Processor Local APIC Structure */ + build_append_int_noprefix(entry, 0, 1); /* Type */ + build_append_int_noprefix(entry, 8, 1); /* Length */ + build_append_int_noprefix(entry, uid, 1); /* ACPI Processor ID */ + build_append_int_noprefix(entry, apic_id, 1); /* APIC ID */ + build_append_int_noprefix(entry, flags, 4); /* Flags */ } else { - AcpiMadtProcessorX2Apic *apic = acpi_data_push(entry, sizeof *apic); - - apic->type = ACPI_APIC_LOCAL_X2APIC; - apic->length = sizeof(*apic); - apic->uid = cpu_to_le32(uid); - apic->x2apic_id = cpu_to_le32(apic_id); - apic->flags = cpu_to_le32(flags); + /* Rev 4.0, 5.2.12.12 Processor Local x2APIC Structure */ + build_append_int_noprefix(entry, 9, 1); /* Type */ + build_append_int_noprefix(entry, 16, 1); /* Length */ + build_append_int_noprefix(entry, 0, 2); /* Reserved */ + build_append_int_noprefix(entry, apic_id, 4); /* X2APIC ID */ + build_append_int_noprefix(entry, flags, 4); /* Flags */ + build_append_int_noprefix(entry, uid, 4); /* ACPI Processor UID */ } } +static void build_ioapic(GArray *entry, uint8_t id, uint32_t addr, uint32_t irq) +{ + /* Rev 1.0b, 5.2.8.2 IO APIC */ + build_append_int_noprefix(entry, 1, 1); /* Type */ + build_append_int_noprefix(entry, 12, 1); /* Length */ + build_append_int_noprefix(entry, id, 1); /* IO APIC ID */ + build_append_int_noprefix(entry, 0, 1); /* Reserved */ + build_append_int_noprefix(entry, addr, 4); /* IO APIC Address */ + build_append_int_noprefix(entry, irq, 4); /* System Vector Base */ +} + +static void +build_xrupt_override(GArray *entry, uint8_t src, uint32_t gsi, uint16_t flags) +{ + /* Rev 1.0b, 5.2.8.3.1 Interrupt Source Overrides */ + build_append_int_noprefix(entry, 2, 1); /* Type */ + build_append_int_noprefix(entry, 10, 1); /* Length */ + build_append_int_noprefix(entry, 0, 1); /* Bus */ + build_append_int_noprefix(entry, src, 1); /* Source */ + /* Global System Interrupt Vector */ + build_append_int_noprefix(entry, gsi, 4); + build_append_int_noprefix(entry, flags, 2); /* Flags */ +} + /* * ACPI spec, Revision 1.0b * 5.2.8 Multiple APIC Description Table @@ -73,14 +98,11 @@ void acpi_build_madt(GArray *table_data, BIOSLinker *linker, X86MachineState *x86ms, AcpiDeviceIf *adev, const char *oem_id, const char *oem_table_id) { + int i; + bool x2apic_mode = false; MachineClass *mc = MACHINE_GET_CLASS(x86ms); const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(MACHINE(x86ms)); AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(adev); - bool x2apic_mode = false; - - AcpiMadtIoApic *io_apic; - AcpiMadtIntsrcovr *intsrcovr; - int i; AcpiTable table = { .sig = "APIC", .rev = 1, .oem_id = oem_id, .oem_table_id = oem_table_id }; @@ -96,30 +118,15 @@ void acpi_build_madt(GArray *table_data, BIOSLinker *linker, } } - io_apic = acpi_data_push(table_data, sizeof *io_apic); - io_apic->type = ACPI_APIC_IO; - io_apic->length = sizeof(*io_apic); - io_apic->io_apic_id = ACPI_BUILD_IOAPIC_ID; - io_apic->address = cpu_to_le32(IO_APIC_DEFAULT_ADDRESS); - io_apic->interrupt = cpu_to_le32(0); - + build_ioapic(table_data, ACPI_BUILD_IOAPIC_ID, IO_APIC_DEFAULT_ADDRESS, 0); if (x86ms->ioapic2) { - AcpiMadtIoApic *io_apic2; - io_apic2 = acpi_data_push(table_data, sizeof *io_apic); - io_apic2->type = ACPI_APIC_IO; - io_apic2->length = sizeof(*io_apic); - io_apic2->io_apic_id = ACPI_BUILD_IOAPIC_ID + 1; - io_apic2->address = cpu_to_le32(IO_APIC_SECONDARY_ADDRESS); - io_apic2->interrupt = cpu_to_le32(IO_APIC_SECONDARY_IRQBASE); + build_ioapic(table_data, ACPI_BUILD_IOAPIC_ID + 1, + IO_APIC_SECONDARY_ADDRESS, IO_APIC_SECONDARY_IRQBASE); } if (x86ms->apic_xrupt_override) { - intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr); - intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE; - intsrcovr->length = sizeof(*intsrcovr); - intsrcovr->source = 0; - intsrcovr->gsi = cpu_to_le32(2); - intsrcovr->flags = cpu_to_le16(0); /* conforms to bus specifications */ + build_xrupt_override(table_data, 0, 2, + 0 /* Flags: Conforms to the specifications of the bus */); } for (i = 1; i < 16; i++) { @@ -127,32 +134,30 @@ void acpi_build_madt(GArray *table_data, BIOSLinker *linker, /* No need for a INT source override structure. */ continue; } - intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr); - intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE; - intsrcovr->length = sizeof(*intsrcovr); - intsrcovr->source = i; - intsrcovr->gsi = cpu_to_le32(i); - intsrcovr->flags = cpu_to_le16(0xd); /* active high, level triggered */ + build_xrupt_override(table_data, i, i, + 0xd /* Flags: Active high, Level Triggered */); } if (x2apic_mode) { - AcpiMadtLocalX2ApicNmi *local_nmi; - - local_nmi = acpi_data_push(table_data, sizeof *local_nmi); - local_nmi->type = ACPI_APIC_LOCAL_X2APIC_NMI; - local_nmi->length = sizeof(*local_nmi); - local_nmi->uid = 0xFFFFFFFF; /* all processors */ - local_nmi->flags = cpu_to_le16(0); - local_nmi->lint = 1; /* ACPI_LINT1 */ + /* Rev 4.0, 5.2.12.13 Local x2APIC NMI Structure*/ + build_append_int_noprefix(table_data, 0xA, 1); /* Type */ + build_append_int_noprefix(table_data, 12, 1); /* Length */ + build_append_int_noprefix(table_data, 0, 2); /* Flags */ + /* ACPI Processor UID */ + build_append_int_noprefix(table_data, 0xFFFFFFFF /* all processors */, + 4); + /* Local x2APIC LINT# */ + build_append_int_noprefix(table_data, 1 /* ACPI_LINT1 */, 1); + build_append_int_noprefix(table_data, 0, 3); /* Reserved */ } else { - AcpiMadtLocalNmi *local_nmi; - - local_nmi = acpi_data_push(table_data, sizeof *local_nmi); - local_nmi->type = ACPI_APIC_LOCAL_NMI; - local_nmi->length = sizeof(*local_nmi); - local_nmi->processor_id = 0xff; /* all processors */ - local_nmi->flags = cpu_to_le16(0); - local_nmi->lint = 1; /* ACPI_LINT1 */ + /* Rev 1.0b, 5.2.8.3.3 Local APIC NMI */ + build_append_int_noprefix(table_data, 4, 1); /* Type */ + build_append_int_noprefix(table_data, 6, 1); /* Length */ + /* ACPI Processor ID */ + build_append_int_noprefix(table_data, 0xFF /* all processors */, 1); + build_append_int_noprefix(table_data, 0, 2); /* Flags */ + /* Local APIC INTI# */ + build_append_int_noprefix(table_data, 1 /* ACPI_LINT1 */, 1); } acpi_table_end(linker, &table); |