[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v3 43/62] arm/acpi: Prepare MADT table for Dom0
From: Shannon Zhao <shannon.zhao@xxxxxxxxxx> Copy and modify MADT table before passing it to Dom0. Copy dom0_max_vcpus of GICCs and GICD as well. Signed-off-by: Shannon Zhao <shannon.zhao@xxxxxxxxxx> --- xen/arch/arm/domain_build.c | 98 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 98 insertions(+) diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c index 5d03dc0..4591955 100644 --- a/xen/arch/arm/domain_build.c +++ b/xen/arch/arm/domain_build.c @@ -1359,6 +1359,100 @@ static int prepare_dtb(struct domain *d, struct kernel_info *kinfo) #ifdef CONFIG_ACPI #define XEN_HYPERVISOR_ID 0x000058656E564D4D /* "XenVMM" */ +static int acpi_create_madt(struct domain *d, struct membank tbl_add[]) +{ + struct acpi_table_header *table = NULL; + struct acpi_table_madt *madt = NULL; + struct acpi_madt_generic_distributor gicd; + u64 table_size = sizeof(struct acpi_table_madt); + acpi_status status; + int i; + u8 *base_ptr; + u8 checksum; + + status = acpi_get_table(ACPI_SIG_MADT, 0, &table); + + if ( ACPI_FAILURE(status) ) + { + const char *msg = acpi_format_exception(status); + + printk("Failed to get MADT table, %s\n", msg); + return -EINVAL; + } + + base_ptr = d->arch.efi_acpi_table + + acpi_get_table_offset(tbl_add, TBL_MADT); + ACPI_MEMCPY(base_ptr, table, table_size); + + /* Add Generic Distributor */ + memset(&gicd, 0, sizeof(gicd)); + gicd.header.type = ACPI_MADT_TYPE_GENERIC_DISTRIBUTOR; + gicd.header.length = sizeof(gicd); + gicd.base_address = d->arch.vgic.dbase; + if ( d->arch.vgic.version == GIC_V2 ) + gicd.version = ACPI_MADT_GIC_VERSION_V2; + else if ( d->arch.vgic.version == GIC_V3 ) + gicd.version = ACPI_MADT_GIC_VERSION_V3; + else + gicd.version = ACPI_MADT_GIC_VERSION_NONE; + ACPI_MEMCPY(base_ptr + table_size, &gicd, sizeof(gicd)); + table_size += sizeof(gicd); + + if ( d->arch.vgic.version == GIC_V3 ) { + /* Add Generic Redistributor */ + for ( i = 0; i < d->arch.vgic.nr_regions; i++ ) { + struct acpi_madt_generic_redistributor gicr; + + memset(&gicr, 0, sizeof(gicr)); + gicr.header.type = ACPI_MADT_TYPE_GENERIC_REDISTRIBUTOR; + gicr.header.length = sizeof(gicr); + gicr.base_address = d->arch.vgic.rdist_regions[i].base; + gicr.length = d->arch.vgic.rdist_regions[i].size; + ACPI_MEMCPY(base_ptr + table_size, &gicr, sizeof(gicr)); + table_size += sizeof(gicr); + } + } else { + /* Add Generic Interrupt */ + for ( i = 0; i < d->max_vcpus; i++ ) + { + struct acpi_madt_generic_interrupt gicc; + u64 mpidr = 0; + u32 id = i, j = 0; + + memset(&gicc, 0, sizeof(gicc)); + gicc.header.type = ACPI_MADT_TYPE_GENERIC_INTERRUPT; + gicc.header.length = sizeof(gicc); + gicc.cpu_interface_number = i; + gicc.uid = i; + gicc.flags = ACPI_MADT_ENABLED; + gicc.base_address = d->arch.vgic.cbase; + + do { + mpidr |= (id % 4) << (8 * j); + j++; + if ( j ==3 ) + j++; + id = id / 4; + } while(id > 0); + gicc.arm_mpidr = mpidr; + + ACPI_MEMCPY(base_ptr + table_size, &gicc, sizeof(gicc)); + table_size += sizeof(gicc); + } + } + + madt = (struct acpi_table_madt *)base_ptr; + madt->header.length = table_size; + checksum = acpi_tb_checksum(ACPI_CAST_PTR(u8, madt), table_size); + madt->header.checksum -= checksum; + + tbl_add[TBL_MADT].start = d->arch.efi_acpi_gpa + + acpi_get_table_offset(tbl_add, TBL_MADT); + tbl_add[TBL_MADT].size = table_size; + + return 0; +} + static int acpi_create_fadt(struct domain *d, struct membank tbl_add[]) { struct acpi_table_header *table = NULL; @@ -1463,6 +1557,10 @@ static int prepare_acpi(struct domain *d, struct kernel_info *kinfo) if ( rc != 0 ) return rc; + rc = acpi_create_madt(d, tbl_add); + if ( rc != 0 ) + return rc; + return 0; } #else -- 2.1.0 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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