WIP: ipc: implement creation of user audio thread

Author: kv2019i

src/include/sof/ipc/common.h

@@ -64,6 +64,7 @@ struct ipc_user {
 	/** @brief Result code from user thread processing */
 	int result;
 	struct ipc *ipc;
+	struct k_thread *audio_thread;
 };
 
 struct ipc {

src/ipc/ipc-common.c

@@ -24,6 +24,8 @@
 #include <sof/lib/memory.h>
 #include <sof/list.h>
 #include <sof/platform.h>
+#include <sof/schedule/ll_schedule.h>
+#include <sof/schedule/ll_schedule_domain.h>
 #include <rtos/sof.h>
 #include <rtos/spinlock.h>
 #include <ipc/dai.h>
@@ -278,7 +280,7 @@ void ipc_msg_send(struct ipc_msg *msg, void *data, bool high_priority)
 			list_item_append(&msg->list, &ipc->msg_list);
 	}
 
-#ifdef CONFIG_SOF_USERSPACE_LL
+#if 0 /*def CONFIG_SOF_USERSPACE_LL */
 	LOG_WRN("Skipping IPC worker schedule. TODO to fix\n");
 #else
 	schedule_ipc_worker();
@@ -460,6 +462,11 @@ __cold int ipc_user_init(void)
 
 	k_thread_start(&ipc_user_thread);
 
+	struct task *task = zephyr_ll_task_alloc();
+	schedule_task_init_ll(task, SOF_UUID(ipc_uuid), SOF_SCHEDULE_LL_TIMER,
+			0, NULL, NULL, cpu_get_id(), 0);
+	ipc_user->audio_thread = scheduler_init_context(task);
+
 	/* Wait for user thread startup — consumes the initial k_sem_give from thread */
 	k_sem_take(ipc->ipc_user_pdata->sem, K_FOREVER);
 

src/ipc/ipc4/helper.c

@@ -726,6 +726,14 @@ __cold int ipc_comp_connect(struct ipc *ipc, ipc_pipe_comp_connect *_connect)
 #else
 	dp_heap = NULL;
 #endif /* CONFIG_ZEPHYR_DP_SCHEDULER */
+
+#ifdef CONFIG_SOF_USERSPACE_LL
+	if (!dp_heap) {
+		/* use system user heap for non-DP module buffers */
+		dp_heap = sof_sys_user_heap_get();
+	}
+#endif
+
 	bool cross_core_bind = source->ipc_config.core != sink->ipc_config.core;
 
 	/* If both components are on same core -- process IPC on that core,