}
/**
- * amdgpu_device_ip_suspend - run suspend for hardware IPs
+ * amdgpu_device_ip_suspend_phase1 - run suspend for hardware IPs (phase 1)
*
* @adev: amdgpu_device pointer
*
* in each IP into a state suitable for suspend.
* Returns 0 on success, negative error code on failure.
*/
-int amdgpu_device_ip_suspend(struct amdgpu_device *adev)
+static int amdgpu_device_ip_suspend_phase1(struct amdgpu_device *adev)
+{
+ int i, r;
+
+ if (amdgpu_sriov_vf(adev))
+ amdgpu_virt_request_full_gpu(adev, false);
+
+ for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
+ if (!adev->ip_blocks[i].status.valid)
+ continue;
+ /* displays are handled separately */
+ if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_DCE) {
+ /* ungate blocks so that suspend can properly shut them down */
+ if (adev->ip_blocks[i].version->funcs->set_clockgating_state) {
+ r = adev->ip_blocks[i].version->funcs->set_clockgating_state((void *)adev,
+ AMD_CG_STATE_UNGATE);
+ if (r) {
+ DRM_ERROR("set_clockgating_state(ungate) of IP block <%s> failed %d\n",
+ adev->ip_blocks[i].version->funcs->name, r);
+ }
+ }
+ /* XXX handle errors */
+ r = adev->ip_blocks[i].version->funcs->suspend(adev);
+ /* XXX handle errors */
+ if (r) {
+ DRM_ERROR("suspend of IP block <%s> failed %d\n",
+ adev->ip_blocks[i].version->funcs->name, r);
+ }
+ }
+ }
+
+ if (amdgpu_sriov_vf(adev))
+ amdgpu_virt_release_full_gpu(adev, false);
+
+ return 0;
+}
+
+/**
+ * amdgpu_device_ip_suspend_phase2 - run suspend for hardware IPs (phase 2)
+ *
+ * @adev: amdgpu_device pointer
+ *
+ * Main suspend function for hardware IPs. The list of all the hardware
+ * IPs that make up the asic is walked, clockgating is disabled and the
+ * suspend callbacks are run. suspend puts the hardware and software state
+ * in each IP into a state suitable for suspend.
+ * Returns 0 on success, negative error code on failure.
+ */
+static int amdgpu_device_ip_suspend_phase2(struct amdgpu_device *adev)
{
int i, r;
for (i = adev->num_ip_blocks - 1; i >= 0; i--) {
if (!adev->ip_blocks[i].status.valid)
continue;
+ /* displays are handled in phase1 */
+ if (adev->ip_blocks[i].version->type == AMD_IP_BLOCK_TYPE_DCE)
+ continue;
/* ungate blocks so that suspend can properly shut them down */
if (adev->ip_blocks[i].version->type != AMD_IP_BLOCK_TYPE_SMC &&
adev->ip_blocks[i].version->funcs->set_clockgating_state) {
return 0;
}
+/**
+ * amdgpu_device_ip_suspend - run suspend for hardware IPs
+ *
+ * @adev: amdgpu_device pointer
+ *
+ * Main suspend function for hardware IPs. The list of all the hardware
+ * IPs that make up the asic is walked, clockgating is disabled and the
+ * suspend callbacks are run. suspend puts the hardware and software state
+ * in each IP into a state suitable for suspend.
+ * Returns 0 on success, negative error code on failure.
+ */
+int amdgpu_device_ip_suspend(struct amdgpu_device *adev)
+{
+ int r;
+
+ r = amdgpu_device_ip_suspend_phase1(adev);
+ if (r)
+ return r;
+ r = amdgpu_device_ip_suspend_phase2(adev);
+
+ return r;
+}
+
static int amdgpu_device_ip_reinit_early_sriov(struct amdgpu_device *adev)
{
int i, r;