For GMC 10 parts which support scatter/gather display (display
from system memory), we should allocate a larger gart size
to better handler larger displays. This mirrors what we already
do for GMC 9 parts.
v2: fix typo (Alex)
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c | 17 ++++++++++++++---
1 file changed, 14 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
index 25d5743ae91b..1772f006c61a 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
@@ -834,10 +834,21 @@ static int gmc_v10_0_mc_init(struct amdgpu_device *adev)
adev->gmc.visible_vram_size = adev->gmc.real_vram_size;
/* set the gart size */
- if (amdgpu_gart_size == -1)
- adev->gmc.gart_size = 512ULL << 20;
- else
+ if (amdgpu_gart_size == -1) {
+ switch (adev->ip_versions[GC_HWIP][0]) {
+ default:
+ adev->gmc.gart_size = 512ULL << 20;
+ break;
+ case IP_VERSION(10, 3, 1): /* DCE SG support */
+ case IP_VERSION(10, 3, 3): /* DCE SG support */
+ case IP_VERSION(10, 3, 6): /* DCE SG support */
+ case IP_VERSION(10, 3, 7): /* DCE SG support */
+ adev->gmc.gart_size = 1024ULL << 20;
+ break;
+ }
+ } else {
adev->gmc.gart_size = (u64)amdgpu_gart_size << 20;
+ }
gmc_v10_0_vram_gtt_location(adev, &adev->gmc);
--
2.35.3
