VideoPortGetAgpServices function

Description

The VideoPortGetAgpServices function is obsolete and is supported only for backward compatibility with existing drivers. In its place, driver writers should use VideoPortQueryServices.

VideoPortGetAgpServices returns a list of video port driver-implemented AGP service functions.

Parameters

HwDeviceExtension [in]

Pointer to the miniport driver's device extension.

AgpServices [in]

Pointer to an uninitialized, miniport driver-allocated VIDEO_PORT_AGP_SERVICES structure.

Return value

VideoPortGetAgpServices returns TRUE after it successfully initializes the VIDEO_PORT_AGP_SERVICES structure to which AgpServices points; otherwise it returns FALSE.

Remarks

PnP video miniport drivers that can use AGP should call VideoPortGetAgpServices.

The video port driver initializes the VIDEO_PORT_AGP_SERVICES structure as follows:

• All function pointers are initialized to point to the corresponding video port driver-implemented AGP service functions.
• The AllocationLimit field is initialized to the maximum amount of AGP memory that a miniport driver is allowed to commit, in bytes.

See also

AgpCommitPhysical

AgpCommitVirtual

AgpFreePhysical

AgpFreeVirtual

AgpReleasePhysical

AgpReleaseVirtual

AgpReservePhysical

VIDEO_PORT_AGP_SERVICES

VideoPortQueryServices