dev-amdgpu: Handle framebuffer reads from device cache
Reads to the frame buffer are currently handled by either the MMIO trace
or from the GART table if the address is in the GART aperture. In some
cases the MMIO trace will not contain the address or the data may have
been written previously and be different from the MMIO trace. To handle
this, return the data that was written previously by the driver. The
priority order from lowest to highest is: MMIO trace, device cache,
special framebuffer registers.
Change-Id: Ia45ae19555508fcd780926fedbd7a65c3d294727
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/57589
Reviewed-by: Matt Sinclair <mattdsinclair@gmail.com>
Maintainer: Matt Sinclair <mattdsinclair@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
1 file changed
