drm/amd/amdgpu: limit single process inside MES

This is for MES to limit only one process for the user queues

Signed-off-by: Shaoyun Liu <shaoyun.liu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Author: Shaoyun Liu

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

@@ -1598,9 +1598,11 @@ static ssize_t amdgpu_gfx_set_enforce_isolation(struct device *dev,
 		if (adev->enforce_isolation[i] && !partition_values[i]) {
 			/* Going from enabled to disabled */
 			amdgpu_vmid_free_reserved(adev, AMDGPU_GFXHUB(i));
+			amdgpu_mes_set_enforce_isolation(adev, i, false);
 		} else if (!adev->enforce_isolation[i] && partition_values[i]) {
 			/* Going from disabled to enabled */
 			amdgpu_vmid_alloc_reserved(adev, AMDGPU_GFXHUB(i));
+			amdgpu_mes_set_enforce_isolation(adev, i, true);
 		}
 		adev->enforce_isolation[i] = partition_values[i];
 	}

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

@@ -1678,6 +1678,29 @@ bool amdgpu_mes_suspend_resume_all_supported(struct amdgpu_device *adev)
 	return is_supported;
 }
 
+/* Fix me -- node_id is used to identify the correct MES instances in the future */
+int amdgpu_mes_set_enforce_isolation(struct amdgpu_device *adev, uint32_t node_id, bool enable)
+{
+	struct mes_misc_op_input op_input = {0};
+	int r;
+
+	op_input.op = MES_MISC_OP_CHANGE_CONFIG;
+	op_input.change_config.option.limit_single_process = enable ? 1 : 0;
+
+	if (!adev->mes.funcs->misc_op) {
+		dev_err(adev->dev, "mes change config is not supported!\n");
+		r = -EINVAL;
+		goto error;
+	}
+
+	r = adev->mes.funcs->misc_op(&adev->mes, &op_input);
+	if (r)
+		dev_err(adev->dev, "failed to change_config.\n");
+
+error:
+	return r;
+}
+
 #if defined(CONFIG_DEBUG_FS)
 
 static int amdgpu_debugfs_mes_event_log_show(struct seq_file *m, void *unused)

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

@@ -309,6 +309,7 @@ enum mes_misc_opcode {
 	MES_MISC_OP_WRM_REG_WAIT,
 	MES_MISC_OP_WRM_REG_WR_WAIT,
 	MES_MISC_OP_SET_SHADER_DEBUGGER,
+	MES_MISC_OP_CHANGE_CONFIG,
 };
 
 struct mes_misc_op_input {
@@ -347,6 +348,21 @@ struct mes_misc_op_input {
 			uint32_t tcp_watch_cntl[4];
 			uint32_t trap_en;
 		} set_shader_debugger;
+
+		struct {
+			union {
+				struct {
+					uint32_t limit_single_process : 1;
+					uint32_t enable_hws_logging_buffer : 1;
+					uint32_t reserved : 30;
+				};
+				uint32_t all;
+			} option;
+			struct {
+				uint32_t tdr_level;
+				uint32_t tdr_delay;
+			} tdr_config;
+		} change_config;
 	};
 };
 
@@ -517,4 +533,7 @@ static inline void amdgpu_mes_unlock(struct amdgpu_mes *mes)
 }
 
 bool amdgpu_mes_suspend_resume_all_supported(struct amdgpu_device *adev);
+
+int amdgpu_mes_set_enforce_isolation(struct amdgpu_device *adev, uint32_t node_id, bool enable);
+
 #endif /* __AMDGPU_MES_H__ */

drivers/gpu/drm/amd/amdgpu/mes_v11_0.c

@@ -644,6 +644,18 @@ static int mes_v11_0_misc_op(struct amdgpu_mes *mes,
 				sizeof(misc_pkt.set_shader_debugger.tcp_watch_cntl));
 		misc_pkt.set_shader_debugger.trap_en = input->set_shader_debugger.trap_en;
 		break;
+	case MES_MISC_OP_CHANGE_CONFIG:
+		if ((mes->adev->mes.sched_version & AMDGPU_MES_VERSION_MASK) < 0x63) {
+			dev_err(mes->adev->dev, "MES FW versoin must be larger than 0x63 to support limit single process feature.\n");
+			return -EINVAL;
+		}
+		misc_pkt.opcode = MESAPI_MISC__CHANGE_CONFIG;
+		misc_pkt.change_config.opcode =
+				MESAPI_MISC__CHANGE_CONFIG_OPTION_LIMIT_SINGLE_PROCESS;
+		misc_pkt.change_config.option.bits.limit_single_process =
+				input->change_config.option.limit_single_process;
+		break;
+
 	default:
 		DRM_ERROR("unsupported misc op (%d) \n", input->op);
 		return -EINVAL;
@@ -708,6 +720,9 @@ static int mes_v11_0_set_hw_resources(struct amdgpu_mes *mes)
 					mes->event_log_gpu_addr;
 	}
 
+	if (enforce_isolation)
+		mes_set_hw_res_pkt.limit_single_process = 1;
+
 	return mes_v11_0_submit_pkt_and_poll_completion(mes,
 			&mes_set_hw_res_pkt, sizeof(mes_set_hw_res_pkt),
 			offsetof(union MESAPI_SET_HW_RESOURCES, api_status));

drivers/gpu/drm/amd/amdgpu/mes_v12_0.c

@@ -531,6 +531,14 @@ static int mes_v12_0_misc_op(struct amdgpu_mes *mes,
 				sizeof(misc_pkt.set_shader_debugger.tcp_watch_cntl));
 		misc_pkt.set_shader_debugger.trap_en = input->set_shader_debugger.trap_en;
 		break;
+	case MES_MISC_OP_CHANGE_CONFIG:
+		misc_pkt.opcode = MESAPI_MISC__CHANGE_CONFIG;
+		misc_pkt.change_config.opcode =
+				MESAPI_MISC__CHANGE_CONFIG_OPTION_LIMIT_SINGLE_PROCESS;
+		misc_pkt.change_config.option.bits.limit_single_process =
+				input->change_config.option.limit_single_process;
+		break;
+
 	default:
 		DRM_ERROR("unsupported misc op (%d) \n", input->op);
 		return -EINVAL;
@@ -624,6 +632,9 @@ static int mes_v12_0_set_hw_resources(struct amdgpu_mes *mes, int pipe)
 		mes_set_hw_res_pkt.event_intr_history_gpu_mc_ptr = mes->event_log_gpu_addr + pipe * AMDGPU_MES_LOG_BUFFER_SIZE;
 	}
 
+	if (enforce_isolation)
+		mes_set_hw_res_pkt.limit_single_process = 1;
+
 	return mes_v12_0_submit_pkt_and_poll_completion(mes, pipe,
 			&mes_set_hw_res_pkt, sizeof(mes_set_hw_res_pkt),
 			offsetof(union MESAPI_SET_HW_RESOURCES, api_status));