ASoC: Intel: avs: Add code loading requests

Before firmware and its modules can be used, they have to be loaded.
Code loading process is complex and is a combination of DMA and IPC
operations. Here, IPC part is being added and accounts for CLDMA and HDA
mechanisms both.

Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20220311153544.136854-6-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/avs/Makefile

@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0-only
 
-snd-soc-avs-objs := dsp.o ipc.o
+snd-soc-avs-objs := dsp.o ipc.o messages.o
 
 obj-$(CONFIG_SND_SOC_INTEL_AVS) += snd-soc-avs.o

sound/soc/intel/avs/messages.c

@@ -0,0 +1,65 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// Copyright(c) 2021-2022 Intel Corporation. All rights reserved.
+//
+// Authors: Cezary Rojewski <cezary.rojewski@intel.com>
+//          Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
+//
+
+#include "avs.h"
+#include "messages.h"
+
+#define AVS_CL_TIMEOUT_MS	5000
+
+int avs_ipc_load_modules(struct avs_dev *adev, u16 *mod_ids, u32 num_mod_ids)
+{
+	union avs_global_msg msg = AVS_GLOBAL_REQUEST(LOAD_MULTIPLE_MODULES);
+	struct avs_ipc_msg request;
+	int ret;
+
+	msg.load_multi_mods.mod_cnt = num_mod_ids;
+	request.header = msg.val;
+	request.data = mod_ids;
+	request.size = sizeof(*mod_ids) * num_mod_ids;
+
+	ret = avs_dsp_send_msg_timeout(adev, &request, NULL, AVS_CL_TIMEOUT_MS);
+	if (ret)
+		avs_ipc_err(adev, &request, "load multiple modules", ret);
+
+	return ret;
+}
+
+int avs_ipc_unload_modules(struct avs_dev *adev, u16 *mod_ids, u32 num_mod_ids)
+{
+	union avs_global_msg msg = AVS_GLOBAL_REQUEST(UNLOAD_MULTIPLE_MODULES);
+	struct avs_ipc_msg request;
+	int ret;
+
+	msg.load_multi_mods.mod_cnt = num_mod_ids;
+	request.header = msg.val;
+	request.data = mod_ids;
+	request.size = sizeof(*mod_ids) * num_mod_ids;
+
+	ret = avs_dsp_send_msg_timeout(adev, &request, NULL, AVS_CL_TIMEOUT_MS);
+	if (ret)
+		avs_ipc_err(adev, &request, "unload multiple modules", ret);
+
+	return ret;
+}
+
+int avs_ipc_load_library(struct avs_dev *adev, u32 dma_id, u32 lib_id)
+{
+	union avs_global_msg msg = AVS_GLOBAL_REQUEST(LOAD_LIBRARY);
+	struct avs_ipc_msg request = {{0}};
+	int ret;
+
+	msg.load_lib.dma_id = dma_id;
+	msg.load_lib.lib_id = lib_id;
+	request.header = msg.val;
+
+	ret = avs_dsp_send_msg_timeout(adev, &request, NULL, AVS_CL_TIMEOUT_MS);
+	if (ret)
+		avs_ipc_err(adev, &request, "load library", ret);
+
+	return ret;
+}

sound/soc/intel/avs/messages.h

@@ -24,6 +24,9 @@ enum avs_msg_direction {
 };
 
 enum avs_global_msg_type {
+	AVS_GLB_LOAD_MULTIPLE_MODULES = 15,
+	AVS_GLB_UNLOAD_MULTIPLE_MODULES = 16,
+	AVS_GLB_LOAD_LIBRARY = 24,
 	AVS_GLB_NOTIFICATION = 27,
 };
 
@@ -38,6 +41,16 @@ union avs_global_msg {
 				u32 msg_direction:1;
 				u32 msg_target:1;
 			};
+			/* module loading */
+			struct {
+				u32 mod_cnt:8;
+			} load_multi_mods;
+			/* library loading */
+			struct {
+				u32 dma_id:5;
+				u32 rsvd:11;
+				u32 lib_id:4;
+			} load_lib;
 		};
 		union {
 			u32 val;
@@ -84,6 +97,10 @@ union avs_reply_msg {
 		};
 		union {
 			u32 val;
+			/* module loading */
+			struct {
+				u32 err_mod_id:16;
+			} load_multi_mods;
 		} ext;
 	};
 } __packed;
@@ -167,4 +184,9 @@ struct avs_notify_mod_data {
 	u32 data[];
 } __packed;
 
+/* Code loading messages */
+int avs_ipc_load_modules(struct avs_dev *adev, u16 *mod_ids, u32 num_mod_ids);
+int avs_ipc_unload_modules(struct avs_dev *adev, u16 *mod_ids, u32 num_mod_ids);
+int avs_ipc_load_library(struct avs_dev *adev, u32 dma_id, u32 lib_id);
+
 #endif /* __SOUND_SOC_INTEL_AVS_MSGS_H */