GPIO_CLIENT_CONTROLLER_SPECIFIC_FUNCTION_PARAMETERS - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// gpioclx.h
typedef struct _GPIO_CLIENT_CONTROLLER_SPECIFIC_FUNCTION_PARAMETERS {
PVOID InputBuffer;
SIZE_T InputBufferLength;
PVOID OutputBuffer;
SIZE_T OutputBufferLength;
ULONG BytesWritten;
} GPIO_CLIENT_CONTROLLER_SPECIFIC_FUNCTION_PARAMETERS, *PGPIO_CLIENT_CONTROLLER_SPECIFIC_FUNCTION_PARAMETERS;
View the official Windows Driver Kit DDI referenceNo description available.
The GPIO_CLIENT_CONTROLLER_SPECIFIC_FUNCTION_PARAMETERS structure describes the input and output buffers for a controller-specific operation.
InputBufferA pointer to an input buffer from which the general-purpose I/O (GPIO) controller driver reads the input parameters for the controller-specific operation. This member can be NULL if the operation does not require input parameters.
InputBufferLengthThe size, in bytes, of the input buffer pointed to by InputBuffer.
OutputBufferA pointer to an output buffer to which the GPIO controller driver writes the results for the controller-specific operation. This member can be NULL if the operation does not require output parameters.
OutputBufferLengthThe size, in bytes, of the output buffer pointed to by OutputBuffer.
BytesWrittenThe number of bytes written to the output buffer. The GPIO controller driver sets the value of this member to indicate how much data was written to the output buffer. If no data was written to the output buffer, or if OutputBuffer = NULL, the driver should set BytesWritten = 0.
The Parameters parameter to the CLIENT_ControllerSpecificFunction function is a pointer to a GPIO_CLIENT_CONTROLLER_SPECIFIC_FUNCTION_PARAMETERS structure. This structure describes the input and output buffers from a custom I/O control request (IOCTL) for a hardware-specific operation that is implemented by the GPIO controller and supported by the GPIO controller driver.
The GPIO framework extension (GpioClx) fills in the first four members of the structure before the call to the CLIENT_ControllerSpecificFunction function. This function fills in the last member, BytesWritten.
CLIENT_ControllerSpecificFunction