drm/amdgpu: reverts commit ce316fa55e.

In preparation for doing XGMI reset synchronization using task barrier.

Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Le Ma <Le.Ma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu.h

@@ -994,8 +994,6 @@ struct amdgpu_device {
 
 	bool                            pm_sysfs_en;
 	bool                            ucode_sysfs_en;
-
-	bool				in_baco;
 };
 
 static inline struct amdgpu_device *amdgpu_ttm_adev(struct ttm_bo_device *bdev)

drivers/gpu/drm/amd/amdgpu/amdgpu_device.c

@@ -3797,18 +3797,13 @@ static int amdgpu_device_pre_asic_reset(struct amdgpu_device *adev,
 	return r;
 }
 
-static int amdgpu_do_asic_reset(struct amdgpu_device *adev,
+static int amdgpu_do_asic_reset(struct amdgpu_hive_info *hive,
-			       struct amdgpu_hive_info *hive,
 			       struct list_head *device_list_handle,
 			       bool *need_full_reset_arg)
 {
 	struct amdgpu_device *tmp_adev = NULL;
 	bool need_full_reset = *need_full_reset_arg, vram_lost = false;
 	int r = 0;
-	int cpu = smp_processor_id();
-	bool use_baco =
-		(amdgpu_asic_reset_method(adev) == AMD_RESET_METHOD_BACO) ?
-		true : false;
 
 	/*
 	 * ASIC reset has to be done on all HGMI hive nodes ASAP
@@ -3816,24 +3811,21 @@ static int amdgpu_do_asic_reset(struct amdgpu_device *adev,
 	 */
 	if (need_full_reset) {
 		list_for_each_entry(tmp_adev, device_list_handle, gmc.xgmi.head) {
-			/*
+			/* For XGMI run all resets in parallel to speed up the process */
-			 * For XGMI run all resets in parallel to speed up the
-			 * process by scheduling the highpri wq on different
-			 * cpus. For XGMI with baco reset, all nodes must enter
-			 * baco within close proximity before anyone exit.
-			 */
 			if (tmp_adev->gmc.xgmi.num_physical_nodes > 1) {
-				if (!queue_work_on(cpu, system_highpri_wq,
+				if (!queue_work(system_highpri_wq, &tmp_adev->xgmi_reset_work))
-						   &tmp_adev->xgmi_reset_work))
 					r = -EALREADY;
-				cpu = cpumask_next(cpu, cpu_online_mask);
 			} else
 				r = amdgpu_asic_reset(tmp_adev);
-			if (r)
+
+			if (r) {
+				DRM_ERROR("ASIC reset failed with error, %d for drm dev, %s",
+					 r, tmp_adev->ddev->unique);
 				break;
 			}
+		}
 
-		/* For XGMI wait for all work to complete before proceed */
+		/* For XGMI wait for all resets to complete before proceed */
 		if (!r) {
 			list_for_each_entry(tmp_adev, device_list_handle,
 					    gmc.xgmi.head) {
@@ -3842,53 +3834,9 @@ static int amdgpu_do_asic_reset(struct amdgpu_device *adev,
 					r = tmp_adev->asic_reset_res;
 					if (r)
 						break;
-					if (use_baco)
-						tmp_adev->in_baco = true;
 				}
 			}
 		}
-
-		/*
-		 * For XGMI with baco reset, need exit baco phase by scheduling
-		 * xgmi_reset_work one more time. PSP reset and sGPU skips this
-		 * phase. Not assume the situation that PSP reset and baco reset
-		 * coexist within an XGMI hive.
-		 */
-
-		if (!r && use_baco) {
-			cpu = smp_processor_id();
-			list_for_each_entry(tmp_adev, device_list_handle,
-					    gmc.xgmi.head) {
-				if (tmp_adev->gmc.xgmi.num_physical_nodes > 1) {
-					if (!queue_work_on(cpu,
-						system_highpri_wq,
-						&tmp_adev->xgmi_reset_work))
-						r = -EALREADY;
-					if (r)
-						break;
-					cpu = cpumask_next(cpu, cpu_online_mask);
-				}
-			}
-		}
-
-		if (!r && use_baco) {
-			list_for_each_entry(tmp_adev, device_list_handle,
-					    gmc.xgmi.head) {
-				if (tmp_adev->gmc.xgmi.num_physical_nodes > 1) {
-					flush_work(&tmp_adev->xgmi_reset_work);
-					r = tmp_adev->asic_reset_res;
-					if (r)
-						break;
-					tmp_adev->in_baco = false;
-				}
-			}
-		}
-
-		if (r) {
-			DRM_ERROR("ASIC reset failed with error, %d for drm dev, %s",
-				 r, tmp_adev->ddev->unique);
-			goto end;
-		}
 	}
 
 	if (!r && amdgpu_ras_intr_triggered())
@@ -4182,8 +4130,7 @@ retry:	/* Rest of adevs pre asic reset from XGMI hive. */
 		if (r)
 			adev->asic_reset_res = r;
 	} else {
-		r  = amdgpu_do_asic_reset(adev, hive, device_list_handle,
+		r  = amdgpu_do_asic_reset(hive, device_list_handle, &need_full_reset);
-					  &need_full_reset);
 		if (r && r == -EAGAIN)
 			goto retry;
 	}