On Tue, May 9, 2017 at 7:49 PM, Christian König <deathsimple@xxxxxxxxxxx> wrote: > From: Christian König <christian.koenig@xxxxxxx> > > Try to resize BAR0 to let CPU access all of VRAM. > --- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c > +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c > @@ -372,13 +372,15 @@ static int gmc_v7_0_mc_init(struct amdgpu_device *adev) > } > adev->mc.vram_width = numchan * chansize; > } > - /* Could aper size report 0 ? */ > - adev->mc.aper_base = pci_resource_start(adev->pdev, 0); > - adev->mc.aper_size = pci_resource_len(adev->pdev, 0); > /* 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; > > + if (!(adev->flags & AMD_IS_APU)) > + amdgpu_resize_bar0(adev); > + adev->mc.aper_base = pci_resource_start(adev->pdev, 0); > + adev->mc.aper_size = pci_resource_len(adev->pdev, 0); > + Looks to me like a candidate to be a helper. (3x occurrences) -- With Best Regards, Andy Shevchenko
