drm/amdgpu: add new gttsize module parameter v2

This allows setting the gtt size independent of the gart size.

v2: fix copy and paste typo

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 84ff824ea260..49dd8e0ddd17 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1141,6 +1141,13 @@ static void amdgpu_check_arguments(struct amdgpu_device *adev)
                 }
         }
 
+        if (amdgpu_gtt_size != -1 && amdgpu_gtt_size < 32) {
+                /* gtt size must be greater or equal to 32M */
+                dev_warn(adev->dev, "gtt size (%d) too small\n",
+                                 amdgpu_gtt_size);
+                amdgpu_gtt_size = -1;
+        }
+
         amdgpu_check_vm_size(adev);
 
         amdgpu_check_block_size(adev);