IOCTL_GNSS_LISTEN_DRIVER_REQUEST IOCTL

Description

The IOCTL_GNSS_LISTEN_DRIVER_REQUEST control code is used by the GNSS driver to get data from the HLOS.

Parameters

Major code

Input buffer

Set to NULL.

Input buffer length

Set to 0.

Output buffer

A pointer to a GNSS_EVENT structure.

The EventType must be set to GNSS_Event_DriverRequest and the DriverRequestedData member filled in.

Output buffer length

Set to sizeof(GNSS_EVENT).

Input/output buffer

Input/output buffer length

Status block

Irp->IoStatus.Status is set to STATUS_SUCCESS if the request is successful. Otherwise, Status to the appropriate error condition as a NTSTATUS code.

Remarks

GNSS adapter notes

The GNSS adapter keeps a pending request all the time.

When the driver completes the I/O call, the adapter issues another IOCTL to receive the next driver request.

GNSS driver notes

There will be a pending IOCTL all the time. Whenever there is a need to request data from HLOS the I/O operation should be completed. The GNSS driver should fill out the required data requested by filling the GNSS_DRIVER_REQUEST_DATA structure.

The driver should use this IOCTL to get data in only rare circumstances and not during normal operations. On possible use case would be to request SUPL configuration if somehow the configuration is lost.

See also

Creating IOCTL Requests in Drivers

WdfIoTargetSendInternalIoctlOthersSynchronously

WdfIoTargetSendInternalIoctlSynchronously

WdfIoTargetSendIoctlSynchronously