schedule: ll: userspace: grant the LL thread rights on DP

The LL userspace thread has to interact with the DP one. Grant
required rights.

Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>

Author: lyakh

src/include/sof/schedule/ll_schedule_domain.h

@@ -329,6 +329,8 @@ struct ll_schedule_domain *zephyr_domain_init(int clk);
 #ifdef CONFIG_SOF_USERSPACE_LL
 struct k_thread *zephyr_domain_thread_tid(struct ll_schedule_domain *domain);
 struct k_mem_domain *zephyr_ll_mem_domain(void);
+struct ll_schedule_domain *zephyr_ll_domain_for_core(unsigned int core);
+struct k_thread *zephyr_ll_domain_thread(unsigned int core);
 #endif /* CONFIG_SOF_USERSPACE_LL */
 #endif /* __ZEPHYR__ */
 

src/schedule/zephyr_domain.c

@@ -498,6 +498,20 @@ struct k_thread *zephyr_domain_thread_tid(struct ll_schedule_domain *domain)
 	return dt->ll_thread;
 }
 
+struct k_thread *zephyr_ll_domain_thread(unsigned int core)
+{
+	struct ll_schedule_domain *ll_domain = zephyr_ll_domain_for_core(core);
+
+	if (!ll_domain)
+		return NULL;
+
+	struct zephyr_domain *zephyr_domain = ll_sch_domain_get_pdata(ll_domain);
+
+	struct zephyr_domain_thread *dt = zephyr_domain->domain_thread + core;
+
+	return dt->ll_thread;
+}
+
 #endif /* CONFIG_SOF_USERSPACE_LL */
 
 #if CONFIG_CROSS_CORE_STREAM

src/schedule/zephyr_dp_schedule_application.c

@@ -536,6 +536,7 @@ int scheduler_dp_task_init(struct task **task, const struct sof_uuid_entry *uid,
 
 	k_thread_access_grant(thread_ipc, pdata->event, pdata->thread_id, p_stack, &dp_sync[core]);
 	scheduler_dp_grant(thread_ipc, core);
+	scheduler_dp_grant(zephyr_ll_domain_thread(core), core);
 #endif
 
 	struct k_mem_domain *mdom = objpool_alloc(&dp_mdom_head, sizeof(*mdom),

src/schedule/zephyr_ll.c

@@ -831,3 +831,15 @@ struct ll_schedule_domain *zephyr_ll_domain(void)
 
 	return ll_sch ? ll_sch->ll_domain : NULL;
 }
+
+/* Return a pointer to the LL scheduler timer domain */
+struct ll_schedule_domain *zephyr_ll_domain_for_core(unsigned int core)
+{
+#if CONFIG_SOF_USERSPACE_LL
+	struct zephyr_ll *ll_sch = scheduler_get_data_for_core(SOF_SCHEDULE_LL_TIMER, core);
+#else
+	struct zephyr_ll *ll_sch = scheduler_get_data(SOF_SCHEDULE_LL_TIMER);
+#endif
+
+	return ll_sch ? ll_sch->ll_domain : NULL;
+}