drm/amdgpu: make display pinning more flexible (v2)

commit 81d0bcf9900932633d270d5bc4a54ff599c6ebdb upstream.

Only apply the static threshold for Stoney and Carrizo.
This hardware has certain requirements that don't allow
mixing of GTT and VRAM.  Newer asics do not have these
requirements so we should be able to be more flexible
with where buffers end up.

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2270
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2291
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2255
Acked-by: Luben Tuikov <luben.tuikov@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index a0b1bf1..b1d0cad 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -1510,7 +1510,8 @@ u64 amdgpu_bo_gpu_offset_no_check(struct amdgpu_bo *bo)
 uint32_t amdgpu_bo_get_preferred_domain(struct amdgpu_device *adev,
                                            uint32_t domain)
 {
-       if (domain == (AMDGPU_GEM_DOMAIN_VRAM | AMDGPU_GEM_DOMAIN_GTT)) {
+       if ((domain == (AMDGPU_GEM_DOMAIN_VRAM | AMDGPU_GEM_DOMAIN_GTT)) &&
+           ((adev->asic_type == CHIP_CARRIZO) || (adev->asic_type == CHIP_STONEY))) {
                domain = AMDGPU_GEM_DOMAIN_VRAM;
                if (adev->gmc.real_vram_size <= AMDGPU_SG_THRESHOLD)
                        domain = AMDGPU_GEM_DOMAIN_GTT;