Intel Extensible Firmware Interface - Manual (Page 333)

Protocols — Console Support
Version 1.10 12/01/02 10-39
PUGA_FW_SERVICE_DISPATCH.DispatchService()
Summary
This function is the main UGA service dispatch routine for all UGA_IO_REQUEST s.
Prototype
typedef
UGA_STATUS
(EFIAPI *PUGA_FW_SERVICE_DISPATCH) (
IN PUGA_DEVICE pDevice,
IN OUT PUGA_IO_REQUEST pIoRequest
);
Parameters
pDevice pDevice specifies a pointer to a device object associated with a device
enumerated by a pIoRequest->ioRequestCode of type
UgaIoGetChildDevice . The root device for the
EFI_UGA_IO_PROTOCOL is represented by pDevice being set
to NULL .
pIoRequest pIoRequest points to a caller allocated buffer that contains data
defined by pIoRequest->ioRequestCode . See “Related
Definitions” below for a definition of UGA_IO_REQUEST_CODE s and
their associated data structures.
Related Definitions
typedef UINT32 UGA_STATUS;
typedef enum _UGA_DEVICE_TYPE {
UgaDtParentBus = 1,
UgaDtGraphicsController,
UgaDtOutputController,
UgaDtOutputPort,
UgaDtOther
} UGA_DEVICE_TYPE, *PUGA_DEVICE_TYPE;
typedef UINT32 UGA_DEVICE_ID, *PUGA_DEVICE_ID;
typedef struct _UGA_DEVICE_DATA {
UGA_DEVICE_TYPE deviceType;
UGA_DEVICE_ID deviceId;
UINT32 ui32DeviceContextSize;
UINT32 ui32SharedContextSize;
} UGA_DEVICE_DATA, *PUGA_DEVICE_DATA;