Contents

getApertureRange

Return reference to IODeviceMemory object representing memory range of framebuffer.

Declaration

virtual IODeviceMemory * getApertureRange(
 IOPixelApertureaperture ) = 0;

Parameters

  • aperture:

    The system will only access the aperture kIOFBSystemAperture.

Return Value

an IODeviceMemory instance. A reference will be consumed by the caller for each call of this method - the implementatation should create a new instance of IODeviceMemory for each call, or return one instance with a retain for each call.

Overview

IOFramebuffer subclasses must implement this method to describe the memory used by the framebuffer in the current mode. The OS will map this memory range into user space for client access - the range should only include vram memory not hardware registers.

See Also

Miscellaneous