Re: [PATCH v6 15/22] ASoC: qdsp6: audioreach: add q6apm support

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Thanks Pierre for review,

On 15/09/2021 17:02, Pierre-Louis Bossart wrote:

+static void audioreach_populate_graph(struct apm_graph_open_params *open,
+				      struct list_head *sg_list,
+				      int num_sub_graphs)
+{
+	struct apm_mod_conn_list_params *mc_data = open->mod_conn_list_data;
+	struct apm_module_list_params *ml_data = open->mod_list_data;
+	struct apm_prop_list_params *mp_data = open->mod_prop_data;
+	struct apm_container_params *c_data = open->cont_data;
+	struct apm_sub_graph_params *sg_data = open->sg_data;
+	int ncontainer = 0, nmodule = 0, nconn = 0;
+	struct apm_mod_prop_obj *module_prop_obj;
+	struct audioreach_container *container;
+	struct apm_module_conn_obj *conn_obj;
+	struct audioreach_module *module;
+	struct audioreach_sub_graph *sg;
+	struct apm_container_obj *cobj;
+	struct apm_mod_list_obj *mlobj;
+	int i = 0;
+
+	mlobj = &ml_data->mod_list_obj[0];
+
+	list_for_each_entry(sg, sg_list, node) {
+		struct apm_sub_graph_data *sg_cfg = &sg_data->sg_cfg[i++];
+
+		apm_populate_sub_graph_config(sg_cfg, sg);
+
+		list_for_each_entry(container, &sg->container_list, node) {
+			cobj = &c_data->cont_obj[ncontainer];
+
+			apm_populate_container_config(cobj, container);
+			apm_populate_module_list_obj(mlobj, container, sg->sub_graph_id);
+
+			list_for_each_container_module(module, container) {
+				uint32_t src_mod_inst_id;
+
+				src_mod_inst_id = module->src_mod_inst_id;
+
+				module_prop_obj = &mp_data->mod_prop_obj[nmodule];
+				apm_populate_module_prop_obj(module_prop_obj, module);
+
+				if (src_mod_inst_id /*&& dst_mod_inst_id*/) {

remove left-over code or uncomment required condition?

Yes, this can be removed.


+					conn_obj = &mc_data->conn_obj[nconn];
+					apm_populate_connection_obj(conn_obj, module);
+					nconn++;
+				}
+
+				nmodule++;
+			}
+			mlobj = (void *) mlobj + APM_MOD_LIST_OBJ_PSIZE(container->num_modules);
+
+			ncontainer++;
+		}
+	}
+}

+static struct audioreach_graph *q6apm_get_audioreach_graph(struct q6apm *apm, uint32_t graph_id)
+{
+	struct audioreach_graph_info *info;
+	struct audioreach_graph *graph;
+
+	mutex_lock(&apm->lock);
+	graph = idr_find(&apm->graph_idr, graph_id);
+	mutex_unlock(&apm->lock);
+
+	if (graph) {
+		kref_get(&graph->refcount);
+		return graph;
+	}
+
+	info = idr_find(&apm->graph_info_idr, graph_id);
+
+	if (!info)
+		return ERR_PTR(-ENODEV);
+
+	graph = kzalloc(sizeof(*graph), GFP_KERNEL);
+	if (!graph)
+		return ERR_PTR(-ENOMEM);
+
+	graph->apm = apm;
+	graph->info = info;
+	graph->id = graph_id;
+
+	graph->graph = audioreach_alloc_graph_pkt(apm, &info->sg_list, graph_id);
+	if (IS_ERR(graph->graph)) {
+		kfree(graph);
+		return ERR_PTR(-ENOMEM);
+	}
+
+	mutex_lock(&apm->lock);
+	idr_alloc(&apm->graph_idr, graph, graph_id, graph_id + 1, GFP_KERNEL);

test for idr_alloc() success? You have error checks for idr_find() but
not for the _alloc() case.

Yes, error handing is missing in this case, fixed in next version.


+	mutex_unlock(&apm->lock);
+
+	kref_init(&graph->refcount);
+
+	q6apm_send_cmd_sync(apm, graph->graph, 0);
+
+	return graph;
+}
+

+static int apm_callback(struct gpr_resp_pkt *data, void *priv, int op)
+{
+	gpr_device_t *gdev = priv;
+	struct q6apm *apm = dev_get_drvdata(&gdev->dev);
+	struct device *dev = &gdev->dev;
+	struct gpr_ibasic_rsp_result_t *result;
+	struct gpr_hdr *hdr = &data->hdr;
+	int ret = -EINVAL;
+
+	result = data->payload;
+
+	switch (hdr->opcode) {
+	case APM_CMD_RSP_GET_SPF_STATE:
+		apm->result.opcode = hdr->opcode;
+		apm->result.status = 0;
+		/* First word of result it state */
+		apm->state = result->opcode;
+		wake_up(&apm->wait);
+		break;

this would keep ret = -EINVAL and return it, that seems suspicious since
this doesn't look as an error case?

+	case GPR_BASIC_RSP_RESULT:
+		switch (result->opcode) {
+		case APM_CMD_GRAPH_START:
+		case APM_CMD_GRAPH_OPEN:
+		case APM_CMD_GRAPH_PREPARE:
+		case APM_CMD_GRAPH_CLOSE:
+		case APM_CMD_GRAPH_FLUSH:
+		case APM_CMD_GRAPH_STOP:
+		case APM_CMD_SET_CFG:
+			apm->result.opcode = result->opcode;
+			apm->result.status = result->status;
+			if (result->status) {
+				dev_err(dev, "Error (%d) Processing 0x%08x cmd\n",
+					result->status, result->opcode);
+				ret = -EINVAL;
+			} else {
+				ret = 0;

That's also weird, maybe initialize to zero and return an error code in
error cases, or fix the case APM_CMD_RSP_GET_SPF_STATE above.

this is now fixed by initializing the ret to 0 and setting it in error path.

--srini


+			}
+			wake_up(&apm->wait);
+			break;
+		default:
+			break;
+		}
+		break;
+	default:
+		break;

so all the defaults are errors?

+	}
+
+	return ret;
+}



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