drm/radeon/kms/vm: set vram base offset properly for TN

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index 833892f1f48a..bae3ec332b45 100644
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -1746,7 +1746,12 @@ int cayman_vm_init(struct radeon_device *rdev)
         /* number of VMs */
         rdev->vm_manager.nvm = 8;
         /* base offset of vram pages */
-        rdev->vm_manager.vram_base_offset = 0;
+        if (rdev->flags & RADEON_IS_IGP) {
+                u64 tmp = RREG32(FUS_MC_VM_FB_OFFSET);
+                tmp <<= 22;
+                rdev->vm_manager.vram_base_offset = tmp;
+        } else
+                rdev->vm_manager.vram_base_offset = 0;
         return 0;
 }