/* Support for generating ACPI tables and passing them to Guests * * Copyright (C) 2008-2010 Kevin O'Connor * Copyright (C) 2006 Fabrice Bellard * Copyright (C) 2013 Red Hat Inc * * Author: Michael S. Tsirkin * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * You should have received a copy of the GNU General Public License along * with this program; if not, see . */ #include "qemu/osdep.h" #include "qemu/cutils.h" #include "qapi/error.h" #include "exec/memory.h" #include "hw/acpi/acpi.h" #include "hw/acpi/aml-build.h" #include "hw/acpi/bios-linker-loader.h" #include "hw/acpi/generic_event_device.h" #include "hw/acpi/utils.h" #include "hw/acpi/erst.h" #include "hw/i386/fw_cfg.h" #include "hw/i386/microvm.h" #include "hw/pci/pci.h" #include "hw/pci/pcie_host.h" #include "hw/usb/xhci.h" #include "hw/virtio/virtio-mmio.h" #include "acpi-common.h" #include "acpi-microvm.h" #include CONFIG_DEVICES static void acpi_dsdt_add_virtio(Aml *scope, MicrovmMachineState *mms) { gchar *separator; long int index; BusState *bus; BusChild *kid; bus = sysbus_get_default(); QTAILQ_FOREACH(kid, &bus->children, sibling) { DeviceState *dev = kid->child; Object *obj = object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MMIO); if (obj) { VirtIOMMIOProxy *mmio = VIRTIO_MMIO(obj); VirtioBusState *mmio_virtio_bus = &mmio->bus; BusState *mmio_bus = &mmio_virtio_bus->parent_obj; if (QTAILQ_EMPTY(&mmio_bus->children)) { continue; } separator = g_strrstr(mmio_bus->name, "."); if (!separator) { continue; } if (qemu_strtol(separator + 1, NULL, 10, &index) != 0) { continue; } uint32_t irq = mms->virtio_irq_base + index; hwaddr base = VIRTIO_MMIO_BASE + index * 512; hwaddr size = 512; Aml *dev = aml_device("VR%02u", (unsigned)index); aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0005"))); aml_append(dev, aml_name_decl("_UID", aml_int(index))); aml_append(dev, aml_name_decl("_CCA", aml_int(1))); Aml *crs = aml_resource_template(); aml_append(crs, aml_memory32_fixed(base, size, AML_READ_WRITE)); aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH, AML_EXCLUSIVE, &irq, 1)); aml_append(dev, aml_name_decl("_CRS", crs)); aml_append(scope, dev); } } } static void acpi_dsdt_add_xhci(Aml *scope, MicrovmMachineState *mms) { if (machine_usb(MACHINE(mms))) { xhci_sysbus_build_aml(scope, MICROVM_XHCI_BASE, MICROVM_XHCI_IRQ); } } static void acpi_dsdt_add_pci(Aml *scope, MicrovmMachineState *mms) { if (mms->pcie != ON_OFF_AUTO_ON) { return; } acpi_dsdt_add_gpex(scope, &mms->gpex); } static void build_dsdt_microvm(GArray *table_data, BIOSLinker *linker, MicrovmMachineState *mms) { X86MachineState *x86ms = X86_MACHINE(mms); Aml *dsdt, *sb_scope, *scope, *pkg; bool ambiguous; Object *isabus; AcpiTable table = { .sig = "DSDT", .rev = 2, .oem_id = x86ms->oem_id, .oem_table_id = x86ms->oem_table_id }; isabus = object_resolve_path_type("", TYPE_ISA_BUS, &ambiguous); assert(isabus); assert(!ambiguous); acpi_table_begin(&table, table_data); dsdt = init_aml_allocator(); sb_scope = aml_scope("_SB"); fw_cfg_add_acpi_dsdt(sb_scope, x86ms->fw_cfg); isa_build_aml(ISA_BUS(isabus), sb_scope); build_ged_aml(sb_scope, GED_DEVICE, x86ms->acpi_dev, GED_MMIO_IRQ, AML_SYSTEM_MEMORY, GED_MMIO_BASE); acpi_dsdt_add_power_button(sb_scope); acpi_dsdt_add_virtio(sb_scope, mms); acpi_dsdt_add_xhci(sb_scope, mms); acpi_dsdt_add_pci(sb_scope, mms); aml_append(dsdt, sb_scope); /* ACPI 5.0: Table 7-209 System State Package */ scope = aml_scope("\\"); pkg = aml_package(4); aml_append(pkg, aml_int(ACPI_GED_SLP_TYP_S5)); aml_append(pkg, aml_int(0)); /* ignored */ aml_append(pkg, aml_int(0)); /* reserved */ aml_append(pkg, aml_int(0)); /* reserved */ aml_append(scope, aml_name_decl("_S5", pkg)); aml_append(dsdt, scope); /* copy AML bytecode into ACPI tables blob */ g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len); acpi_table_end(linker, &table); free_aml_allocator(); } static void acpi_build_microvm(AcpiBuildTables *tables, MicrovmMachineState *mms) { MachineState *machine = MACHINE(mms); X86MachineState *x86ms = X86_MACHINE(mms); GArray *table_offsets; GArray *tables_blob = tables->table_data; unsigned dsdt, xsdt; AcpiFadtData pmfadt = { /* ACPI 5.0: 4.1 Hardware-Reduced ACPI */ .rev = 5, .flags = ((1 << ACPI_FADT_F_HW_REDUCED_ACPI) | (1 << ACPI_FADT_F_RESET_REG_SUP)), /* ACPI 5.0: 4.8.3.7 Sleep Control and Status Registers */ .sleep_ctl = { .space_id = AML_AS_SYSTEM_MEMORY, .bit_width = 8, .address = GED_MMIO_BASE_REGS + ACPI_GED_REG_SLEEP_CTL, }, .sleep_sts = { .space_id = AML_AS_SYSTEM_MEMORY, .bit_width = 8, .address = GED_MMIO_BASE_REGS + ACPI_GED_REG_SLEEP_STS, }, /* ACPI 5.0: 4.8.3.6 Reset Register */ .reset_reg = { .space_id = AML_AS_SYSTEM_MEMORY, .bit_width = 8, .address = GED_MMIO_BASE_REGS + ACPI_GED_REG_RESET, }, .reset_val = ACPI_GED_RESET_VALUE, }; table_offsets = g_array_new(false, true /* clear */, sizeof(uint32_t)); bios_linker_loader_alloc(tables->linker, ACPI_BUILD_TABLE_FILE, tables_blob, 64 /* Ensure FACS is aligned */, false /* high memory */); dsdt = tables_blob->len; build_dsdt_microvm(tables_blob, tables->linker, mms); pmfadt.dsdt_tbl_offset = &dsdt; pmfadt.xdsdt_tbl_offset = &dsdt; acpi_add_table(table_offsets, tables_blob); build_fadt(tables_blob, tables->linker, &pmfadt, x86ms->oem_id, x86ms->oem_table_id); acpi_add_table(table_offsets, tables_blob); acpi_build_madt(tables_blob, tables->linker, X86_MACHINE(machine), ACPI_DEVICE_IF(x86ms->acpi_dev), x86ms->oem_id, x86ms->oem_table_id); #ifdef CONFIG_ACPI_ERST { Object *erst_dev; erst_dev = find_erst_dev(); if (erst_dev) { acpi_add_table(table_offsets, tables_blob); build_erst(tables_blob, tables->linker, erst_dev, x86ms->oem_id, x86ms->oem_table_id); } } #endif xsdt = tables_blob->len; build_xsdt(tables_blob, tables->linker, table_offsets, x86ms->oem_id, x86ms->oem_table_id); /* RSDP is in FSEG memory, so allocate it separately */ { AcpiRsdpData rsdp_data = { /* ACPI 2.0: 5.2.4.3 RSDP Structure */ .revision = 2, /* xsdt needs v2 */ .oem_id = x86ms->oem_id, .xsdt_tbl_offset = &xsdt, .rsdt_tbl_offset = NULL, }; build_rsdp(tables->rsdp, tables->linker, &rsdp_data); } /* Cleanup memory that's no longer used. */ g_array_free(table_offsets, true); } static void acpi_build_no_update(void *build_opaque) { /* nothing, microvm tables don't change at runtime */ } void acpi_setup_microvm(MicrovmMachineState *mms) { X86MachineState *x86ms = X86_MACHINE(mms); AcpiBuildTables tables; assert(x86ms->fw_cfg); if (!x86_machine_is_acpi_enabled(x86ms)) { return; } acpi_build_tables_init(&tables); acpi_build_microvm(&tables, mms); /* Now expose it all to Guest */ acpi_add_rom_blob(acpi_build_no_update, NULL, tables.table_data, ACPI_BUILD_TABLE_FILE); acpi_add_rom_blob(acpi_build_no_update, NULL, tables.linker->cmd_blob, ACPI_BUILD_LOADER_FILE); acpi_add_rom_blob(acpi_build_no_update, NULL, tables.rsdp, ACPI_BUILD_RSDP_FILE); acpi_build_tables_cleanup(&tables, false); }