MC_VM_SYSTEM_APERTURE_DEFAULT_ADDR
WREG32(MC_VM_SYSTEM_APERTURE_DEFAULT_ADDR,
WREG32(MC_VM_SYSTEM_APERTURE_DEFAULT_ADDR, rdev->vram_scratch.gpu_addr >> 12);
WREG32(MC_VM_SYSTEM_APERTURE_DEFAULT_ADDR, rdev->vram_scratch.gpu_addr >> 12);
WREG32(MC_VM_SYSTEM_APERTURE_DEFAULT_ADDR, rdev->vram_scratch.gpu_addr >> 12);
WREG32(MC_VM_SYSTEM_APERTURE_DEFAULT_ADDR,