Minimal ACPI device for PCI-less machines like microvm.
Signed-off-by: Gerd Hoffmann <kra...@redhat.com>
---
hw/acpi/isa-acpi.c | 114 ++++++++++++++++++++++++++++++++++++++++++
hw/acpi/Makefile.objs | 1 +
2 files changed, 115 insertions(+)
create mode 100644 hw/acpi/isa-acpi.c
diff --git a/hw/acpi/isa-acpi.c b/hw/acpi/isa-acpi.c
new file mode 100644
index 000000000000..5d7d770a5c0b
--- /dev/null
+++ b/hw/acpi/isa-acpi.c
@@ -0,0 +1,114 @@
+#include "qemu/osdep.h"
+#include "hw/i386/pc.h"
+#include "hw/acpi/acpi.h"
+#include "sysemu/runstate.h"
+
+typedef struct ISAACPI {
+ ISADevice base;
+
+ uint32_t io_base;
+ uint16_t sci_irq;
+ uint32_t gpe_base;
+ uint32_t gpe_len;
+
+ qemu_irq irq;
+ MemoryRegion io;
+ ACPIREGS acpi;
+ Notifier powerdown_req;
+} ISAACPI;
+
+#define TYPE_ISA_ACPI "isa-acpi"
+#define ISA_ACPI(obj) \
+ OBJECT_CHECK(ISAACPI, (obj), TYPE_ISA_ACPI)
+
+static void isa_acpi_timer(ACPIREGS *acpi)
+{
+ ISAACPI *s = container_of(acpi, ISAACPI, acpi);
+ acpi_update_sci(&s->acpi, s->irq);
+}
+
+static void isa_acpi_init(Object *obj)
+{
+ ISAACPI *s = ISA_ACPI(obj);
+
+ s->io_base = 0x600;
+ s->sci_irq = 9;
+ s->gpe_base = 0x680;
+ s->gpe_len = 4;
+}
+
+static void isa_acpi_powerdown_req(Notifier *n, void *opaque)
+{
+ ISAACPI *s = container_of(n, ISAACPI, powerdown_req);
+
+ acpi_pm1_evt_power_down(&s->acpi);
+}
+
+static void isa_acpi_add_propeties(ISAACPI *s)
+{
+ static const uint8_t zero;
+
+ object_property_add_uint8_ptr(OBJECT(s), ACPI_PM_PROP_ACPI_ENABLE_CMD,
+ &zero, NULL);
+ object_property_add_uint8_ptr(OBJECT(s), ACPI_PM_PROP_ACPI_DISABLE_CMD,
+ &zero, NULL);
+ object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_GPE0_BLK,
+ &s->gpe_base, NULL);
+ object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_GPE0_BLK_LEN,
+ &s->gpe_len, NULL);
+ object_property_add_uint16_ptr(OBJECT(s), ACPI_PM_PROP_SCI_INT,
+ &s->sci_irq, NULL);
+ object_property_add_uint32_ptr(OBJECT(s), ACPI_PM_PROP_PM_IO_BASE,
+ &s->io_base, NULL);
+}
+
+static void isa_acpi_realize(DeviceState *dev, Error **errp)
+{
+ ISADevice *isa = ISA_DEVICE(dev);
+ ISAACPI *s = ISA_ACPI(dev);
+
+ memory_region_init(&s->io, OBJECT(s), "isa-acpi", 64);
+ memory_region_set_enabled(&s->io, true);
+ isa_register_ioport(isa, &s->io, s->io_base);
+ isa_init_irq(isa, &s->irq, s->sci_irq);
+
+ acpi_pm_tmr_init(&s->acpi, isa_acpi_timer, &s->io);
+ acpi_pm1_evt_init(&s->acpi, isa_acpi_timer, &s->io);
+ acpi_pm1_cnt_init(&s->acpi, &s->io, true, true, 0);
+ acpi_gpe_init(&s->acpi, 4);
+
+ s->powerdown_req.notify = isa_acpi_powerdown_req;
+ qemu_register_powerdown_notifier(&s->powerdown_req);
+
+ isa_acpi_add_propeties(s);
+}
+
+static void isa_acpi_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_CLASS(klass);
+
+ dc->realize = isa_acpi_realize;
+ dc->user_creatable = false;
+ dc->hotpluggable = false;
+ adevc->madt_cpu = pc_madt_cpu_entry;
+}
+
+static const TypeInfo isa_acpi_info = {
+ .name = TYPE_ISA_ACPI,
+ .parent = TYPE_ISA_DEVICE,
+ .instance_size = sizeof(ISAACPI),
+ .instance_init = isa_acpi_init,
+ .class_init = isa_acpi_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { TYPE_ACPI_DEVICE_IF },
+ { }
+ }
+};
+
+static void register_types(void)
+{
+ type_register_static(&isa_acpi_info);
+}
+
+type_init(register_types)
diff --git a/hw/acpi/Makefile.objs b/hw/acpi/Makefile.objs
index 777da07f4d70..aae53c73ebbd 100644
--- a/hw/acpi/Makefile.objs
+++ b/hw/acpi/Makefile.objs
@@ -14,6 +14,7 @@ common-obj-$(call lnot,$(CONFIG_PC)) += acpi-x86-stub.o
common-obj-y += acpi_interface.o
common-obj-y += bios-linker-loader.o
common-obj-y += aml-build.o utils.o
+common-obj-$(CONFIG_PC) += isa-acpi.o
common-obj-$(CONFIG_ACPI_PCI) += pci.o
common-obj-$(CONFIG_TPM) += tpm.o
--
2.18.2
