From 14404dd2d1c18529f619461e09e3065e1aa46c7b Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Tue, 15 Sep 2020 14:08:52 +0200 Subject: acpi: ged: add control regs Add control regs (sleep, reset) for hw-reduced acpi. Signed-off-by: Gerd Hoffmann Reviewed-by: Igor Mammedov Message-id: 20200915120909.20838-5-kraxel@redhat.com --- hw/acpi/generic_event_device.c | 44 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) (limited to 'hw/acpi') diff --git a/hw/acpi/generic_event_device.c b/hw/acpi/generic_event_device.c index b8abdefa1c..491df80a5c 100644 --- a/hw/acpi/generic_event_device.c +++ b/hw/acpi/generic_event_device.c @@ -20,6 +20,7 @@ #include "hw/qdev-properties.h" #include "migration/vmstate.h" #include "qemu/error-report.h" +#include "sysemu/runstate.h" static const uint32_t ged_supported_events[] = { ACPI_GED_MEM_HOTPLUG_EVT, @@ -176,6 +177,45 @@ static const MemoryRegionOps ged_evt_ops = { }, }; +static uint64_t ged_regs_read(void *opaque, hwaddr addr, unsigned size) +{ + return 0; +} + +static void ged_regs_write(void *opaque, hwaddr addr, uint64_t data, + unsigned int size) +{ + bool slp_en; + int slp_typ; + + switch (addr) { + case ACPI_GED_REG_SLEEP_CTL: + slp_typ = (data >> 2) & 0x07; + slp_en = (data >> 5) & 0x01; + if (slp_en && slp_typ == 5) { + qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); + } + return; + case ACPI_GED_REG_SLEEP_STS: + return; + case ACPI_GED_REG_RESET: + if (data == ACPI_GED_RESET_VALUE) { + qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN); + } + return; + } +} + +static const MemoryRegionOps ged_regs_ops = { + .read = ged_regs_read, + .write = ged_regs_write, + .endianness = DEVICE_LITTLE_ENDIAN, + .valid = { + .min_access_size = 1, + .max_access_size = 1, + }, +}; + static void acpi_ged_device_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { @@ -332,6 +372,10 @@ static void acpi_ged_initfn(Object *obj) sysbus_init_mmio(sbd, &s->container_memhp); acpi_memory_hotplug_init(&s->container_memhp, OBJECT(dev), &s->memhp_state, 0); + + memory_region_init_io(&ged_st->regs, obj, &ged_regs_ops, ged_st, + TYPE_ACPI_GED "-regs", ACPI_GED_REG_COUNT); + sysbus_init_mmio(sbd, &ged_st->regs); } static void acpi_ged_class_init(ObjectClass *class, void *data) -- cgit v1.2.3-55-g7522