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/drivers/vservices/debug.h b/drivers/vservices/debug.h
new file mode 100644
index 0000000..b379b04
--- /dev/null
+++ b/drivers/vservices/debug.h
@@ -0,0 +1,74 @@
+/*
+ * drivers/vservices/debug.h
+ *
+ * Copyright (c) 2012-2018 General Dynamics
+ * Copyright (c) 2014 Open Kernel Labs, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * Debugging macros and support functions for Virtual Services.
+ */
+#ifndef _VSERVICES_DEBUG_H
+#define _VSERVICES_DEBUG_H
+
+#include <linux/version.h>
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 38)
+#include <linux/printk.h>
+#else
+#ifndef no_printk
+#define no_printk(format, args...) do { } while (0)
+#endif
+#endif
+
+#include <vservices/session.h>
+#include "transport.h"
+
+#define VS_DEBUG_TRANSPORT (1 << 0)
+#define VS_DEBUG_TRANSPORT_MESSAGES (1 << 1)
+#define VS_DEBUG_SESSION (1 << 2)
+#define VS_DEBUG_CLIENT (1 << 3)
+#define VS_DEBUG_CLIENT_CORE (1 << 4)
+#define VS_DEBUG_SERVER (1 << 5)
+#define VS_DEBUG_SERVER_CORE (1 << 6)
+#define VS_DEBUG_PROTOCOL (1 << 7)
+#define VS_DEBUG_ALL 0xff
+
+#ifdef CONFIG_VSERVICES_DEBUG
+
+#define vs_debug(type, session, format, args...) \
+ do { \
+ if ((session)->debug_mask & (type)) \
+ dev_dbg(&(session)->dev, format, ##args); \
+ } while (0)
+
+#define vs_dev_debug(type, session, dev, format, args...) \
+ do { \
+ if ((session)->debug_mask & (type)) \
+ dev_dbg(dev, format, ##args); \
+ } while (0)
+
+static inline void vs_debug_dump_mbuf(struct vs_session_device *session,
+ struct vs_mbuf *mbuf)
+{
+ if (session->debug_mask & VS_DEBUG_TRANSPORT_MESSAGES)
+ print_hex_dump_bytes("msg:", DUMP_PREFIX_OFFSET,
+ mbuf->data, mbuf->size);
+}
+
+#else
+
+/* Dummy versions: Use no_printk to retain type/format string checking */
+#define vs_debug(type, session, format, args...) \
+ do { (void)session; no_printk(format, ##args); } while(0)
+
+#define vs_dev_debug(type, session, dev, format, args...) \
+ do { (void)session; (void)dev; no_printk(format, ##args); } while(0)
+
+static inline void vs_debug_dump_mbuf(struct vs_session_device *session,
+ struct vs_mbuf *mbuf) {}
+
+#endif /* CONFIG_VSERVICES_DEBUG */
+
+#endif /* _VSERVICES_DEBUG_H */