dp: application: restore double mapping for userspace

Since Zephyr has removed double mapping per Kconfig switch we need to
restore it in SOF. Next we should try to optimize mappings to only
use the ones we really need.

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

Author: lyakh

src/schedule/zephyr_dp_schedule.h

@@ -25,7 +25,9 @@ struct scheduler_dp_data {
 
 enum sof_dp_part_type {
 	SOF_DP_PART_HEAP,
+	SOF_DP_PART_HEAP_CACHE,
 	SOF_DP_PART_CFG,
+	SOF_DP_PART_CFG_CACHE,
 	SOF_DP_PART_TYPE_COUNT,
 };
 

src/schedule/zephyr_dp_schedule_application.c

@@ -395,7 +395,9 @@ void scheduler_dp_domain_free(struct processing_module *pmod)
 	struct task_dp_pdata *pdata = pmod->dev->task->priv_data;
 
 	k_mem_domain_remove_partition(dp_mdom + core, pdata->mpart + SOF_DP_PART_HEAP);
+	k_mem_domain_remove_partition(dp_mdom + core, pdata->mpart + SOF_DP_PART_HEAP_CACHE);
 	k_mem_domain_remove_partition(dp_mdom + core, pdata->mpart + SOF_DP_PART_CFG);
+	k_mem_domain_remove_partition(dp_mdom + core, pdata->mpart + SOF_DP_PART_CFG_CACHE);
 #endif
 }
 
@@ -518,12 +520,22 @@ int scheduler_dp_task_init(struct task **task, const struct sof_uuid_entry *uid,
 		.size = size,
 		.attr = K_MEM_PARTITION_P_RW_U_RW,
 	};
+	pdata->mpart[SOF_DP_PART_HEAP_CACHE] = (struct k_mem_partition){
+		.start = (uintptr_t)sys_cache_cached_ptr_get((void *)start),
+		.size = size,
+		.attr = K_MEM_PARTITION_P_RW_U_RW | XTENSA_MMU_CACHED_WB,
+	};
 	/* Host mailbox partition for additional IPC parameters: read-only */
 	pdata->mpart[SOF_DP_PART_CFG] = (struct k_mem_partition){
-		.start = (uintptr_t)MAILBOX_HOSTBOX_BASE,
+		.start = (uintptr_t)sys_cache_uncached_ptr_get((void *)MAILBOX_HOSTBOX_BASE),
 		.size = 4096,
 		.attr = K_MEM_PARTITION_P_RO_U_RO,
 	};
+	pdata->mpart[SOF_DP_PART_CFG_CACHE] = (struct k_mem_partition){
+		.start = (uintptr_t)MAILBOX_HOSTBOX_BASE,
+		.size = 4096,
+		.attr = K_MEM_PARTITION_P_RO_U_RO | XTENSA_MMU_CACHED_WB,
+	};
 
 	for (pidx = 0; pidx < SOF_DP_PART_TYPE_COUNT; pidx++) {
 		ret = k_mem_domain_add_partition(dp_mdom + core, pdata->mpart + pidx);