Staging: hv: add the Hyper-V virtual bus

This is the virtual bus that all of the Linux Hyper-V drivers use.

Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 184 insertions, 0 deletions

diff --git a/drivers/staging/hv/Hv.h b/drivers/staging/hv/Hv.h
new file mode 100644
index 0000000..cbc77d2
--- /dev/null
+++ b/drivers/staging/hv/Hv.h
@@ -0,0 +1,184 @@
+/*
+ *
+ * Copyright (c) 2009, Microsoft Corporation.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place - Suite 330, Boston, MA 02111-1307 USA.
+ *
+ * Authors:
+ *   Haiyang Zhang <haiyangz@microsoft.com>
+ *   Hank Janssen  <hjanssen@microsoft.com>
+ *
+ */
+
+
+#ifndef __HV_H__
+#define __HV_H__
+
+#include "osd.h"
+
+#include "HvTypes.h"
+#include "HvStatus.h"
+//#include "HvVmApi.h"
+//#include "HvKeApi.h"
+//#include "HvMmApi.h"
+//#include "HvCpuApi.h"
+#include "HvHalApi.h"
+#include "HvVpApi.h"
+//#include "HvTrApi.h"
+#include "HvSynicApi.h"
+//#include "HvAmApi.h"
+//#include "HvHkApi.h"
+//#include "HvValApi.h"
+#include "HvHcApi.h"
+#include "HvPtApi.h"
+
+enum
+{
+    VMBUS_MESSAGE_CONNECTION_ID = 1,
+    VMBUS_MESSAGE_PORT_ID       = 1,
+    VMBUS_EVENT_CONNECTION_ID   = 2,
+    VMBUS_EVENT_PORT_ID         = 2,
+    VMBUS_MONITOR_CONNECTION_ID = 3,
+    VMBUS_MONITOR_PORT_ID       = 3,
+    VMBUS_MESSAGE_SINT          = 2
+};
+//
+// #defines
+//
+#define HV_PRESENT_BIT				0x80000000
+
+#define HV_XENLINUX_GUEST_ID_LO     0x00000000
+#define HV_XENLINUX_GUEST_ID_HI		0x0B00B135
+#define HV_XENLINUX_GUEST_ID		(((UINT64)HV_XENLINUX_GUEST_ID_HI << 32) | HV_XENLINUX_GUEST_ID_LO)
+
+#define HV_LINUX_GUEST_ID_LO		0x00000000
+#define HV_LINUX_GUEST_ID_HI		0xB16B00B5
+#define HV_LINUX_GUEST_ID			(((UINT64)HV_LINUX_GUEST_ID_HI << 32) | HV_LINUX_GUEST_ID_LO)
+
+#define HV_CPU_POWER_MANAGEMENT     (1 << 0)
+#define HV_RECOMMENDATIONS_MAX      4
+
+#define HV_X64_MAX                  5
+#define HV_CAPS_MAX                 8
+
+
+#define HV_HYPERCALL_PARAM_ALIGN	sizeof(UINT64)
+
+//
+// Service definitions
+//
+#define HV_SERVICE_PARENT_PORT (0)
+#define HV_SERVICE_PARENT_CONNECTION (0)
+
+#define HV_SERVICE_CONNECT_RESPONSE_SUCCESS             (0)
+#define HV_SERVICE_CONNECT_RESPONSE_INVALID_PARAMETER   (1)
+#define HV_SERVICE_CONNECT_RESPONSE_UNKNOWN_SERVICE     (2)
+#define HV_SERVICE_CONNECT_RESPONSE_CONNECTION_REJECTED (3)
+
+#define HV_SERVICE_CONNECT_REQUEST_MESSAGE_ID		(1)
+#define HV_SERVICE_CONNECT_RESPONSE_MESSAGE_ID		(2)
+#define HV_SERVICE_DISCONNECT_REQUEST_MESSAGE_ID	(3)
+#define HV_SERVICE_DISCONNECT_RESPONSE_MESSAGE_ID	(4)
+#define HV_SERVICE_MAX_MESSAGE_ID					(4)
+
+#define HV_SERVICE_PROTOCOL_VERSION (0x0010)
+#define HV_CONNECT_PAYLOAD_BYTE_COUNT 64
+
+//#define VMBUS_REVISION_NUMBER	6
+//#define VMBUS_PORT_ID			11		// Our local vmbus's port and connection id. Anything >0 is fine
+
+// 628180B8-308D-4c5e-B7DB-1BEB62E62EF4
+static const GUID VMBUS_SERVICE_ID = {.Data = {0xb8, 0x80, 0x81, 0x62, 0x8d, 0x30, 0x5e, 0x4c, 0xb7, 0xdb, 0x1b, 0xeb, 0x62, 0xe6, 0x2e, 0xf4} };
+
+#define MAX_NUM_CPUS	1
+
+
+typedef struct {
+	UINT64					Align8;
+	HV_INPUT_SIGNAL_EVENT	Event;
+} HV_INPUT_SIGNAL_EVENT_BUFFER;
+
+typedef struct {
+	UINT64	GuestId;			// XenLinux or native Linux. If XenLinux, the hypercall and synic pages has already been initialized
+	void*	HypercallPage;
+
+	BOOL	SynICInitialized;
+	// This is used as an input param to HvCallSignalEvent hypercall. The input param is immutable
+	// in our usage and must be dynamic mem (vs stack or global).
+	HV_INPUT_SIGNAL_EVENT_BUFFER *SignalEventBuffer;
+	HV_INPUT_SIGNAL_EVENT *SignalEventParam; // 8-bytes aligned of the buffer above
+
+	HANDLE	synICMessagePage[MAX_NUM_CPUS];
+	HANDLE	synICEventPage[MAX_NUM_CPUS];
+} HV_CONTEXT;
+
+extern HV_CONTEXT gHvContext;
+
+
+//
+// Inline routines
+//
+static inline unsigned long long ReadMsr(int msr)
+{
+	unsigned long long val;
+
+	RDMSR(msr, val);
+
+	return val;
+}
+
+static inline void WriteMsr(int msr, UINT64 val)
+{
+	WRMSR(msr, val);
+
+	return;
+}
+
+//
+// Hv Interface
+//
+INTERNAL int
+HvInit(
+    VOID
+    );
+
+INTERNAL VOID
+HvCleanup(
+    VOID
+    );
+
+INTERNAL HV_STATUS
+HvPostMessage(
+	HV_CONNECTION_ID connectionId,
+	HV_MESSAGE_TYPE  messageType,
+	PVOID            payload,
+	SIZE_T           payloadSize
+	);
+
+INTERNAL HV_STATUS
+HvSignalEvent(
+	VOID
+	);
+
+INTERNAL int
+HvSynicInit(
+	UINT32		irqVector
+	);
+
+INTERNAL VOID
+HvSynicCleanup(
+	VOID
+	);
+
+#endif // __HV_H__