1 files changed, 103 insertions, 0 deletions
diff --git a/drivers/staging/vc04_services/include/linux/raspberrypi/vchiq.h b/drivers/staging/vc04_services/include/linux/raspberrypi/vchiq.h
new file mode 100644
index 000000000000..18d63df368c4
--- /dev/null
+++ b/drivers/staging/vc04_services/include/linux/raspberrypi/vchiq.h
@@ -0,0 +1,103 @@
+/* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
+/* Copyright (c) 2010-2012 Broadcom. All rights reserved. */
+
+#ifndef VCHIQ_H
+#define VCHIQ_H
+
+#define VCHIQ_MAKE_FOURCC(x0, x1, x2, x3) \
+			(((x0) << 24) | ((x1) << 16) | ((x2) << 8) | (x3))
+
+enum vchiq_reason {
+	VCHIQ_SERVICE_OPENED,         /* service, -, -             */
+	VCHIQ_SERVICE_CLOSED,         /* service, -, -             */
+	VCHIQ_MESSAGE_AVAILABLE,      /* service, header, -        */
+	VCHIQ_BULK_TRANSMIT_DONE,     /* service, -, bulk_userdata */
+	VCHIQ_BULK_RECEIVE_DONE,      /* service, -, bulk_userdata */
+	VCHIQ_BULK_TRANSMIT_ABORTED,  /* service, -, bulk_userdata */
+	VCHIQ_BULK_RECEIVE_ABORTED    /* service, -, bulk_userdata */
+};
+
+enum vchiq_status {
+	VCHIQ_ERROR   = -1,
+	VCHIQ_SUCCESS = 0,
+	VCHIQ_RETRY   = 1
+};
+
+enum vchiq_bulk_mode {
+	VCHIQ_BULK_MODE_CALLBACK,
+	VCHIQ_BULK_MODE_BLOCKING,
+	VCHIQ_BULK_MODE_NOCALLBACK,
+	VCHIQ_BULK_MODE_WAITING		/* Reserved for internal use */
+};
+
+enum vchiq_service_option {
+	VCHIQ_SERVICE_OPTION_AUTOCLOSE,
+	VCHIQ_SERVICE_OPTION_SLOT_QUOTA,
+	VCHIQ_SERVICE_OPTION_MESSAGE_QUOTA,
+	VCHIQ_SERVICE_OPTION_SYNCHRONOUS,
+	VCHIQ_SERVICE_OPTION_TRACE
+};
+
+struct vchiq_header {
+	/* The message identifier - opaque to applications. */
+	int msgid;
+
+	/* Size of message data. */
+	unsigned int size;
+
+	char data[0];           /* message */
+};
+
+struct vchiq_element {
+	const void __user *data;
+	unsigned int size;
+};
+
+struct vchiq_service_base {
+	int fourcc;
+	enum vchiq_status (*callback)(enum vchiq_reason reason,
+				      struct vchiq_header *header,
+				      unsigned int handle,
+				      void *bulk_userdata);
+	void *userdata;
+};
+
+struct vchiq_service_params {
+	int fourcc;
+	enum vchiq_status (*callback)(enum vchiq_reason reason,
+				      struct vchiq_header *header,
+				      unsigned int handle,
+				      void *bulk_userdata);
+	void *userdata;
+	short version;       /* Increment for non-trivial changes */
+	short version_min;   /* Update for incompatible changes */
+};
+
+struct vchiq_instance;
+
+extern enum vchiq_status vchiq_initialise(struct vchiq_instance **pinstance);
+extern enum vchiq_status vchiq_shutdown(struct vchiq_instance *instance);
+extern enum vchiq_status vchiq_connect(struct vchiq_instance *instance);
+extern enum vchiq_status vchiq_open_service(struct vchiq_instance *instance,
+	const struct vchiq_service_params *params,
+	unsigned int *pservice);
+extern enum vchiq_status vchiq_close_service(unsigned int service);
+extern enum vchiq_status vchiq_use_service(unsigned int service);
+extern enum vchiq_status vchiq_release_service(unsigned int service);
+extern void vchiq_msg_queue_push(unsigned int handle, struct vchiq_header *header);
+extern void           vchiq_release_message(unsigned int service,
+	struct vchiq_header *header);
+extern int vchiq_queue_kernel_message(unsigned int handle, void *data,
+				      unsigned int size);
+extern enum vchiq_status vchiq_bulk_transmit(unsigned int service,
+	const void *data, unsigned int size, void *userdata,
+	enum vchiq_bulk_mode mode);
+extern enum vchiq_status vchiq_bulk_receive(unsigned int service,
+	void *data, unsigned int size, void *userdata,
+	enum vchiq_bulk_mode mode);
+extern void *vchiq_get_service_userdata(unsigned int service);
+extern enum vchiq_status vchiq_get_peer_version(unsigned int handle,
+      short *peer_version);
+extern struct vchiq_header *vchiq_msg_hold(unsigned int handle);
+
+#endif /* VCHIQ_H */