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device_manager: Enable power button for ACPI on AArch64

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Current AArch64 power button is only for device tree using a PL061
GPIO controller device. Since AArch64 now supports ACPI, this
commit extend the power button on AArch64 to:

- Using GED for ACPI+UEFI boot.
- Using PL061 for device tree boot.

Signed-off-by: Henry Wang <Henry.Wang@arm.com>
This commit is contained in:
Henry Wang 2021-09-02 00:37:09 -04:00 committed by Bo Chen
parent e475b12cf7
commit c50051a686
1 changed files with 32 additions and 2 deletions
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34
vmm/src/device_manager.rs
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@ -3701,13 +3701,43 @@ impl DeviceManager {
#[cfg(target_arch = "aarch64")]
pub fn notify_power_button(&self) -> DeviceManagerResult<()> {
self.gpio_device
// There are three use cases:
// 1. The Cloud Hypervisor is built without feature acpi.
// 2. The Cloud Hypervisor is built with feature acpi, but users will
// use direct kernel boot with device tree.
// 3. The Cloud Hypervisor is built with feature acpi, and users will
// use ACPI+UEFI boot.
#[cfg(not(feature = "acpi"))]
// The `return` here will trigger a GPIO pin 3 event, which will trigger
// a power button event for use case 1.
return self
.gpio_device
.as_ref()
.unwrap()
.lock()
.unwrap()
.trigger_key(3)
.map_err(DeviceManagerError::AArch64PowerButtonNotification)
.map_err(DeviceManagerError::AArch64PowerButtonNotification);
#[cfg(feature = "acpi")]
{
// Trigger a GPIO pin 3 event to satisify use case 2.
self.gpio_device
.as_ref()
.unwrap()
.lock()
.unwrap()
.trigger_key(3)
.map_err(DeviceManagerError::AArch64PowerButtonNotification)?;
// Trigger a GED power button event to satisify use case 3.
return self
.ged_notification_device
.as_ref()
.unwrap()
.lock()
.unwrap()
.notify(AcpiNotificationFlags::POWER_BUTTON_CHANGED)
.map_err(DeviceManagerError::PowerButtonNotification);
}
}
pub fn iommu_attached_devices(&self) -> &Option<(u32, Vec<u32>)> {