drm/amdgpu: share drm device for pci amdgpu device with 1st partition device

To save render node resoure, share drm device setting for pci amdgpu
device with 1st XCP partition device.

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

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c
index 9687df9841eeb6752766fef0b74a66c726a73520..d175e862f2226a3d13dcce57b161d7223aa13adf 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xcp.c
@@ -234,7 +234,10 @@ static int amdgpu_xcp_dev_alloc(struct amdgpu_device *adev)
 
        ddev = adev_to_drm(adev);
 
-       for (i = 0; i < MAX_XCP; i++) {
+       /* xcp #0 shares drm device setting with adev */
+       adev->xcp_mgr->xcp->ddev = ddev;
+
+       for (i = 1; i < MAX_XCP; i++) {
                ret = amdgpu_xcp_drm_dev_alloc(&p_ddev);
                if (ret)
                        return ret;
@@ -324,7 +327,7 @@ int amdgpu_xcp_dev_register(struct amdgpu_device *adev,
        if (!adev->xcp_mgr)
                return 0;
 
-       for (i = 0; i < MAX_XCP; i++) {
+       for (i = 1; i < MAX_XCP; i++) {
                ret = drm_dev_register(adev->xcp_mgr->xcp[i].ddev, ent->driver_data);
                if (ret)
                        return ret;
@@ -341,7 +344,7 @@ void amdgpu_xcp_dev_unplug(struct amdgpu_device *adev)
        if (!adev->xcp_mgr)
                return;
 
-       for (i = 0; i < MAX_XCP; i++) {
+       for (i = 1; i < MAX_XCP; i++) {
                p_ddev = adev->xcp_mgr->xcp[i].ddev;
                drm_dev_unplug(p_ddev);
                p_ddev->render->dev = adev->xcp_mgr->xcp[i].rdev;