driver: vservices: Add the vservices framework and core
Adds the Virtual Services framework and core protocol code.
The Virtual Services framework provides a bus for generic inter-vm
communications using a high level abstract model. The vservices
bus provides support for both HLOS and embedded C clients and servers,
allowing VMs to communicate in a common OS independent manner.
The vservices bus and services over it are hot-plug capable and
can support a wide variety of use cases, including device virtualization
using virtual device protocol (classes) and drivers, similar in
concept to USB or virtual IO.
Change-Id: I7a696354f59730e0ad340fb92dc85661a7376dee
Signed-off-by: Carl van Schaik <carl@cog.systems>
Git-commit: 42814676e8bf5fb34060ee80e05e2175ae146292
Git-repo: https://github.com/CogSystems/linux-msm.git
Signed-off-by: Minming Qi <mqi@codeaurora.org>
diff --git a/include/vservices/ioctl.h b/include/vservices/ioctl.h
new file mode 100644
index 0000000..d96fcab
--- /dev/null
+++ b/include/vservices/ioctl.h
@@ -0,0 +1,48 @@
+/*
+ * vservices/ioctl.h - Interface to service character devices
+ *
+ * Copyright (c) 2016, Cog Systems Pty Ltd
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __LINUX_PUBLIC_VSERVICES_IOCTL_H__
+#define __LINUX_PUBLIC_VSERVICES_IOCTL_H__
+
+#include <linux/types.h>
+#include <linux/compiler.h>
+
+/* ioctls that work on any opened service device */
+#define IOCTL_VS_RESET_SERVICE _IO('4', 0)
+#define IOCTL_VS_GET_NAME _IOR('4', 1, char[16])
+#define IOCTL_VS_GET_PROTOCOL _IOR('4', 2, char[32])
+
+/*
+ * Claim a device for user I/O (if no kernel driver is attached). The claim
+ * persists until the char device is closed.
+ */
+struct vs_ioctl_bind {
+ __u32 send_quota;
+ __u32 recv_quota;
+ __u32 send_notify_bits;
+ __u32 recv_notify_bits;
+ size_t msg_size;
+};
+#define IOCTL_VS_BIND_CLIENT _IOR('4', 3, struct vs_ioctl_bind)
+#define IOCTL_VS_BIND_SERVER _IOWR('4', 4, struct vs_ioctl_bind)
+
+/* send and receive messages and notifications */
+#define IOCTL_VS_NOTIFY _IOW('4', 5, __u32)
+struct vs_ioctl_iovec {
+ union {
+ __u32 iovcnt; /* input */
+ __u32 notify_bits; /* output (recv only) */
+ };
+ struct iovec *iov;
+};
+#define IOCTL_VS_SEND _IOW('4', 6, struct vs_ioctl_iovec)
+#define IOCTL_VS_RECV _IOWR('4', 7, struct vs_ioctl_iovec)
+
+#endif /* __LINUX_PUBLIC_VSERVICES_IOCTL_H__ */