| /* Support for generating ACPI tables and passing them to Guests |
| * |
| * Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net> |
| * Copyright (C) 2006 Fabrice Bellard |
| * Copyright (C) 2013 Red Hat Inc |
| * |
| * Author: Michael S. Tsirkin <mst@redhat.com> |
| * |
| * 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 <http://www.gnu.org/licenses/>. |
| */ |
| |
| #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/boards.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" |
| |
| 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; |
| |
| isabus = object_resolve_path_type("", TYPE_ISA_BUS, &ambiguous); |
| assert(isabus); |
| assert(!ambiguous); |
| |
| dsdt = init_aml_allocator(); |
| |
| /* Reserve space for header */ |
| acpi_data_push(dsdt->buf, sizeof(AcpiTableHeader)); |
| |
| 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 table into ACPI tables blob and patch header there */ |
| g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len); |
| build_header(linker, table_data, |
| (void *)(table_data->data + table_data->len - dsdt->buf->len), |
| "DSDT", dsdt->buf->len, 2, mms->oem_id, mms->oem_table_id); |
| 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, mms->oem_id, |
| mms->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), mms->oem_id, |
| mms->oem_table_id); |
| |
| xsdt = tables_blob->len; |
| build_xsdt(tables_blob, tables->linker, table_offsets, mms->oem_id, |
| mms->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 = mms->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_BUILD_TABLE_MAX_SIZE); |
| acpi_add_rom_blob(acpi_build_no_update, NULL, |
| tables.linker->cmd_blob, |
| "etc/table-loader", 0); |
| acpi_add_rom_blob(acpi_build_no_update, NULL, |
| tables.rsdp, |
| ACPI_BUILD_RSDP_FILE, 0); |
| |
| acpi_build_tables_cleanup(&tables, false); |
| } |
