As a next step, you could also remove HDP flushing on APUs. Regards, Felix
On 16-11-07 04:21 AM, Christian König wrote: > From: Christian König <[email protected]> > > We don't need to use the PCI BAR on APUs. This allows us to access > the full VRAM directly without being limited by the BAR size. > > Signed-off-by: Christian König <[email protected]> > --- > drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c | 9 ++++++++- > 1 file changed, 8 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c > b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c > index 3a25f72..70585b1 100644 > --- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c > +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c > @@ -375,9 +375,16 @@ static int gmc_v7_0_mc_init(struct amdgpu_device *adev) > /* size in MB on si */ > adev->mc.mc_vram_size = RREG32(mmCONFIG_MEMSIZE) * 1024ULL * 1024ULL; > adev->mc.real_vram_size = RREG32(mmCONFIG_MEMSIZE) * 1024ULL * 1024ULL; > - adev->mc.visible_vram_size = adev->mc.aper_size; > + > +#ifdef CONFIG_X86_64 > + if (adev->flags & AMD_IS_APU) { > + adev->mc.aper_base = RREG32(mmMC_VM_FB_OFFSET) << 22ULL; > + adev->mc.aper_size = adev->mc.real_vram_size; > + } > +#endif > > /* In case the PCI BAR is larger than the actual amount of vram */ > + adev->mc.visible_vram_size = adev->mc.aper_size; > if (adev->mc.visible_vram_size > adev->mc.real_vram_size) > adev->mc.visible_vram_size = adev->mc.real_vram_size; > _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
