1 files changed, 86 insertions, 0 deletions
diff --git a/sound/soc/intel/common/sst-ipc.h b/sound/soc/intel/common/sst-ipc.h
new file mode 100644
index 000000000..77d651e88
--- /dev/null
+++ b/sound/soc/intel/common/sst-ipc.h
@@ -0,0 +1,86 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Intel SST generic IPC Support
+ *
+ * Copyright (C) 2015, Intel Corporation. All rights reserved.
+ */
+
+#ifndef __SST_GENERIC_IPC_H
+#define __SST_GENERIC_IPC_H
+
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/wait.h>
+#include <linux/list.h>
+#include <linux/workqueue.h>
+#include <linux/sched.h>
+
+struct sst_ipc_message {
+	u64 header;
+	void *data;
+	size_t size;
+};
+
+struct ipc_message {
+	struct list_head list;
+	struct sst_ipc_message tx;
+	struct sst_ipc_message rx;
+
+	wait_queue_head_t waitq;
+	bool pending;
+	bool complete;
+	bool wait;
+	int errno;
+};
+
+struct sst_generic_ipc;
+struct sst_dsp;
+
+struct sst_plat_ipc_ops {
+	void (*tx_msg)(struct sst_generic_ipc *, struct ipc_message *);
+	void (*shim_dbg)(struct sst_generic_ipc *, const char *);
+	void (*tx_data_copy)(struct ipc_message *, char *, size_t);
+	u64  (*reply_msg_match)(u64 header, u64 *mask);
+	bool (*is_dsp_busy)(struct sst_dsp *dsp);
+	int (*check_dsp_lp_on)(struct sst_dsp *dsp, bool state);
+};
+
+/* SST generic IPC data */
+struct sst_generic_ipc {
+	struct device *dev;
+	struct sst_dsp *dsp;
+
+	/* IPC messaging */
+	struct list_head tx_list;
+	struct list_head rx_list;
+	struct list_head empty_list;
+	wait_queue_head_t wait_txq;
+	struct task_struct *tx_thread;
+	struct work_struct kwork;
+	bool pending;
+	struct ipc_message *msg;
+	int tx_data_max_size;
+	int rx_data_max_size;
+
+	struct sst_plat_ipc_ops ops;
+};
+
+int sst_ipc_tx_message_wait(struct sst_generic_ipc *ipc,
+	struct sst_ipc_message request, struct sst_ipc_message *reply);
+
+int sst_ipc_tx_message_nowait(struct sst_generic_ipc *ipc,
+	struct sst_ipc_message request);
+
+int sst_ipc_tx_message_nopm(struct sst_generic_ipc *ipc,
+	struct sst_ipc_message request, struct sst_ipc_message *reply);
+
+struct ipc_message *sst_ipc_reply_find_msg(struct sst_generic_ipc *ipc,
+	u64 header);
+
+void sst_ipc_tx_msg_reply_complete(struct sst_generic_ipc *ipc,
+	struct ipc_message *msg);
+
+int sst_ipc_init(struct sst_generic_ipc *ipc);
+void sst_ipc_fini(struct sst_generic_ipc *ipc);
+
+#endif