From 99a7545f92378765ca98eb1b54b1087c9d2567ec Mon Sep 17 00:00:00 2001 From: Igor Mammedov Date: Fri, 24 Sep 2021 08:27:48 -0400 Subject: [PATCH] acpi: madt: arm/x86: use acpi_table_begin()/acpi_table_end() instead of build_header() it replaces error-prone pointer arithmetic for build_header() API, with 2 calls to start and finish table creation, which hides offsets magic from API user. Signed-off-by: Igor Mammedov Reviewed-by: Eric Auger Message-Id: <20210924122802.1455362-22-imammedo@redhat.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/arm/virt-acpi-build.c | 19 +++++++++++-------- hw/i386/acpi-common.c | 19 +++++++++++-------- include/hw/acpi/acpi-defs.h | 9 --------- 3 files changed, 22 insertions(+), 25 deletions(-) diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c index 6ba02cf281..e3bdcd44e8 100644 --- a/hw/arm/virt-acpi-build.c +++ b/hw/arm/virt-acpi-build.c @@ -567,19 +567,26 @@ build_gtdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) vms->oem_table_id); } -/* MADT */ +/* + * ACPI spec, Revision 5.0 + * 5.2.12 Multiple APIC Description Table (MADT) + */ static void build_madt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) { VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms); - int madt_start = table_data->len; const MemMapEntry *memmap = vms->memmap; const int *irqmap = vms->irqmap; AcpiMadtGenericDistributor *gicd; AcpiMadtGenericMsiFrame *gic_msi; int i; + AcpiTable table = { .sig = "APIC", .rev = 3, .oem_id = vms->oem_id, + .oem_table_id = vms->oem_table_id }; - acpi_data_push(table_data, sizeof(AcpiMultipleApicTable)); + acpi_table_begin(&table, table_data); + /* Local Interrupt Controller Address */ + build_append_int_noprefix(table_data, 0, 4); + build_append_int_noprefix(table_data, 0, 4); /* Flags */ gicd = acpi_data_push(table_data, sizeof *gicd); gicd->type = ACPI_APIC_GENERIC_DISTRIBUTOR; @@ -650,11 +657,7 @@ build_madt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms) gic_msi->spi_count = cpu_to_le16(NUM_GICV2M_SPIS); gic_msi->spi_base = cpu_to_le16(irqmap[VIRT_GIC_V2M] + ARM_SPI_BASE); } - - build_header(linker, table_data, - (void *)(table_data->data + madt_start), "APIC", - table_data->len - madt_start, 3, vms->oem_id, - vms->oem_table_id); + acpi_table_end(linker, &table); } /* FADT */ diff --git a/hw/i386/acpi-common.c b/hw/i386/acpi-common.c index 1f5947fcf9..a0cde1d874 100644 --- a/hw/i386/acpi-common.c +++ b/hw/i386/acpi-common.c @@ -71,24 +71,29 @@ void pc_madt_cpu_entry(AcpiDeviceIf *adev, int uid, } } +/* + * ACPI spec, Revision 1.0b + * 5.2.8 Multiple APIC Description Table + */ void acpi_build_madt(GArray *table_data, BIOSLinker *linker, X86MachineState *x86ms, AcpiDeviceIf *adev, const char *oem_id, const char *oem_table_id) { MachineClass *mc = MACHINE_GET_CLASS(x86ms); const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(MACHINE(x86ms)); - int madt_start = table_data->len; AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(adev); bool x2apic_mode = false; - AcpiMultipleApicTable *madt; AcpiMadtIoApic *io_apic; AcpiMadtIntsrcovr *intsrcovr; int i; + AcpiTable table = { .sig = "APIC", .rev = 1, .oem_id = oem_id, + .oem_table_id = oem_table_id }; - madt = acpi_data_push(table_data, sizeof *madt); - madt->local_apic_address = cpu_to_le32(APIC_DEFAULT_ADDRESS); - madt->flags = cpu_to_le32(1); + acpi_table_begin(&table, table_data); + /* Local APIC Address */ + build_append_int_noprefix(table_data, APIC_DEFAULT_ADDRESS, 4); + build_append_int_noprefix(table_data, 1 /* PCAT_COMPAT */, 4); /* Flags */ for (i = 0; i < apic_ids->len; i++) { adevc->madt_cpu(adev, i, apic_ids, table_data); @@ -156,8 +161,6 @@ void acpi_build_madt(GArray *table_data, BIOSLinker *linker, local_nmi->lint = 1; /* ACPI_LINT1 */ } - build_header(linker, table_data, - (void *)(table_data->data + madt_start), "APIC", - table_data->len - madt_start, 1, oem_id, oem_table_id); + acpi_table_end(linker, &table); } diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h index c4f0a202e8..c7fa5caa06 100644 --- a/include/hw/acpi/acpi-defs.h +++ b/include/hw/acpi/acpi-defs.h @@ -176,15 +176,6 @@ typedef struct AcpiFacsDescriptorRev1 AcpiFacsDescriptorRev1; #define ACPI_DUAL_PIC 0 #define ACPI_MULTIPLE_APIC 1 -/* Master MADT */ - -struct AcpiMultipleApicTable { - ACPI_TABLE_HEADER_DEF /* ACPI common table header */ - uint32_t local_apic_address; /* Physical address of local APIC */ - uint32_t flags; -} QEMU_PACKED; -typedef struct AcpiMultipleApicTable AcpiMultipleApicTable; - /* Values for Type in APIC sub-headers */ #define ACPI_APIC_PROCESSOR 0