new file mode 100644
@@ -0,0 +1,8 @@
+#ifndef HW_I386_ACPI_MICROVM_H
+#define HW_I386_ACPI_MICROVM_H
+
+#include "hw/i386/microvm.h"
+
+void acpi_setup_microvm(MicrovmMachineState *mms);
+
+#endif
@@ -24,12 +24,18 @@
#include "hw/boards.h"
#include "hw/i386/x86.h"
+#include "hw/acpi/acpi_dev_interface.h"
/* Platform virtio definitions */
#define VIRTIO_MMIO_BASE 0xfeb00000
#define VIRTIO_NUM_TRANSPORTS 8
#define VIRTIO_CMDLINE_MAXLEN 64
+#define GED_MMIO_BASE 0xfea00000
+#define GED_MMIO_BASE_MEMHP (GED_MMIO_BASE + 0x100)
+#define GED_MMIO_BASE_REGS (GED_MMIO_BASE + 0x200)
+#define GED_MMIO_IRQ 9
+
/* Machine type options */
#define MICROVM_MACHINE_PIT "pit"
#define MICROVM_MACHINE_PIC "pic"
@@ -58,6 +64,9 @@ typedef struct {
/* Machine state */
uint32_t virtio_irq_base;
bool kernel_cmdline_fixed;
+ Notifier machine_done;
+ Notifier powerdown_req;
+ AcpiDeviceIf *acpi_dev;
} MicrovmMachineState;
#define TYPE_MICROVM_MACHINE MACHINE_TYPE_NAME("microvm")
new file mode 100644
@@ -0,0 +1,181 @@
+/* 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 "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 "acpi-common.h"
+#include "acpi-microvm.h"
+
+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, HOTPLUG_HANDLER(mms->acpi_dev),
+ GED_MMIO_IRQ, AML_SYSTEM_MEMORY, GED_MMIO_BASE);
+ acpi_dsdt_add_power_button(sb_scope);
+ aml_append(dsdt, sb_scope);
+
+ scope = aml_scope("\\");
+ pkg = aml_package(4);
+ aml_append(pkg, aml_int(5)); /* SLEEP_CONTROL_REG.SLP_TYP */
+ 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, 5, NULL, NULL);
+ free_aml_allocator();
+}
+
+static void acpi_build_microvm(AcpiBuildTables *tables,
+ MicrovmMachineState *mms)
+{
+ MachineState *machine = MACHINE(mms);
+ GArray *table_offsets;
+ GArray *tables_blob = tables->table_data;
+ unsigned dsdt, xsdt;
+ AcpiFadtData pmfadt = {
+ .rev = 5,
+ .minor_ver = 1,
+ .flags = ((1 << ACPI_FADT_F_HW_REDUCED_ACPI) |
+ (1 << ACPI_FADT_F_RESET_REG_SUP)),
+ .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,
+ },
+ .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, NULL, NULL);
+
+ acpi_add_table(table_offsets, tables_blob);
+ acpi_build_madt(tables_blob, tables->linker, X86_MACHINE(machine),
+ mms->acpi_dev, false);
+
+ xsdt = tables_blob->len;
+ build_xsdt(tables_blob, tables->linker, table_offsets, NULL, NULL);
+
+ /* RSDP is in FSEG memory, so allocate it separately */
+ {
+ AcpiRsdpData rsdp_data = {
+ .revision = 2,
+ .oem_id = ACPI_BUILD_APPNAME6,
+ .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);
+}
@@ -26,6 +26,8 @@
#include "sysemu/cpus.h"
#include "sysemu/numa.h"
#include "sysemu/reset.h"
+#include "sysemu/runstate.h"
+#include "acpi-microvm.h"
#include "hw/loader.h"
#include "hw/irq.h"
@@ -41,6 +43,8 @@
#include "hw/i386/e820_memory_layout.h"
#include "hw/i386/fw_cfg.h"
#include "hw/virtio/virtio-mmio.h"
+#include "hw/acpi/acpi.h"
+#include "hw/acpi/generic_event_device.h"
#include "cpu.h"
#include "elf.h"
@@ -129,6 +133,17 @@ static void microvm_devices_init(MicrovmMachineState *mms)
}
/* Optional and legacy devices */
+ if (x86_machine_is_acpi_enabled(x86ms)) {
+ DeviceState *dev = qdev_new(TYPE_ACPI_GED_X86);
+ qdev_prop_set_uint32(dev, "ged-event", ACPI_GED_PWR_DOWN_EVT);
+ sysbus_mmio_map(SYS_BUS_DEVICE(dev), 0, GED_MMIO_BASE);
+ /* sysbus_mmio_map(SYS_BUS_DEVICE(dev), 1, GED_MMIO_BASE_MEMHP); */
+ sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, GED_MMIO_BASE_REGS);
+ sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0,
+ x86ms->gsi[GED_MMIO_IRQ]);
+ sysbus_realize(SYS_BUS_DEVICE(dev), &error_fatal);
+ mms->acpi_dev = ACPI_DEVICE_IF(dev);
+ }
if (mms->pic == ON_OFF_AUTO_ON || mms->pic == ON_OFF_AUTO_AUTO) {
qemu_irq *i8259;
@@ -438,6 +453,26 @@ static void microvm_machine_set_auto_kernel_cmdline(Object *obj, bool value,
mms->auto_kernel_cmdline = value;
}
+static void microvm_machine_done(Notifier *notifier, void *data)
+{
+ MicrovmMachineState *mms = container_of(notifier, MicrovmMachineState,
+ machine_done);
+
+ acpi_setup_microvm(mms);
+}
+
+static void microvm_powerdown_req(Notifier *notifier, void *data)
+{
+ MicrovmMachineState *mms = container_of(notifier, MicrovmMachineState,
+ powerdown_req);
+
+ if (mms->acpi_dev) {
+ Object *obj = OBJECT(mms->acpi_dev);
+ AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(obj);
+ adevc->send_event(mms->acpi_dev, ACPI_POWER_DOWN_STATUS);
+ }
+}
+
static void microvm_machine_initfn(Object *obj)
{
MicrovmMachineState *mms = MICROVM_MACHINE(obj);
@@ -452,6 +487,11 @@ static void microvm_machine_initfn(Object *obj)
/* State */
mms->kernel_cmdline_fixed = false;
+
+ mms->machine_done.notify = microvm_machine_done;
+ qemu_add_machine_init_done_notifier(&mms->machine_done);
+ mms->powerdown_req.notify = microvm_powerdown_req;
+ qemu_register_powerdown_notifier(&mms->powerdown_req);
}
static void microvm_class_init(ObjectClass *oc, void *data)
@@ -102,6 +102,7 @@ config MICROVM
select I8259
select MC146818RTC
select VIRTIO_MMIO
+ select ACPI_HW_REDUCED
config X86_IOMMU
bool
@@ -19,3 +19,4 @@ obj-y += kvmvapic.o
obj-$(CONFIG_ACPI) += acpi-common.o
obj-$(CONFIG_ACPI_HW_REDUCED) += generic_event_device_x86.o
obj-$(CONFIG_PC) += acpi-build.o
+obj-$(CONFIG_MICROVM) += acpi-microvm.o
$subject says all. Can be controlled using -M microvm,acpi=on/off. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> --- hw/i386/acpi-microvm.h | 8 ++ include/hw/i386/microvm.h | 9 ++ hw/i386/acpi-microvm.c | 181 ++++++++++++++++++++++++++++++++++++++ hw/i386/microvm.c | 40 +++++++++ hw/i386/Kconfig | 1 + hw/i386/Makefile.objs | 1 + 6 files changed, 240 insertions(+) create mode 100644 hw/i386/acpi-microvm.h create mode 100644 hw/i386/acpi-microvm.c