[patch 02/54] Staging: hv: add the Hyper-V driver header files

[Greg Kroah-Hartman <gregkh@suse.de>]

[-- Attachment #1: staging-hv-add-the-hyper-v-driver-header-files.patch --]
[-- Type: text/plain, Size: 30311 bytes --]

From: Hank Janssen <hjanssen@microsoft.com>

These are the header files for the different Linux Hyper-V drivers to
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>
---
 drivers/staging/hv/include/NetVscApi.h  |  145 +++++++++++++++++
 drivers/staging/hv/include/StorVscApi.h |  137 ++++++++++++++++
 drivers/staging/hv/include/VmbusApi.h   |  262 +++++++++++++++++++++++++++++++
 drivers/staging/hv/include/logging.h    |  134 ++++++++++++++++
 drivers/staging/hv/include/osd.h        |  263 ++++++++++++++++++++++++++++++++
 drivers/staging/hv/include/vmbus.h      |  111 +++++++++++++
 6 files changed, 1052 insertions(+)
 create mode 100644 drivers/staging/hv/include/NetVscApi.h
 create mode 100644 drivers/staging/hv/include/StorVscApi.h
 create mode 100644 drivers/staging/hv/include/VmbusApi.h
 create mode 100644 drivers/staging/hv/include/logging.h
 create mode 100644 drivers/staging/hv/include/osd.h
 create mode 100644 drivers/staging/hv/include/vmbus.h

--- /dev/null
+++ b/drivers/staging/hv/include/logging.h
@@ -0,0 +1,134 @@
+/*
+ *
+ * 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 _LOGGING_H_
+#define _LOGGING_H_
+
+//#include <linux/init.h>
+//#include <linux/module.h>
+
+#include "osd.h"
+
+#define VMBUS				0x0001
+#define STORVSC				0x0002
+#define NETVSC				0x0004
+#define INPUTVSC			0x0008
+#define BLKVSC				0x0010
+#define VMBUS_DRV			0x0100
+#define STORVSC_DRV			0x0200
+#define NETVSC_DRV			0x0400
+#define INPUTVSC_DRV		0x0800
+#define BLKVSC_DRV			0x1000
+
+#define ALL_MODULES			(VMBUS		|\
+							STORVSC		|\
+							NETVSC		|\
+							INPUTVSC	|\
+							BLKVSC		|\
+							VMBUS_DRV	|\
+							STORVSC_DRV	|\
+							NETVSC_DRV	|\
+							INPUTVSC_DRV|\
+							BLKVSC_DRV)
+
+// Logging Level
+#define CRITICAL_LVL				2
+#define ERROR_LVL					3
+#define WARNING_LVL					4
+#define INFO_LVL					6
+#define DEBUG_LVL					7
+#define DEBUG_LVL_ENTEREXIT			8
+#define DEBUG_RING_LVL				9
+
+extern unsigned int vmbus_loglevel;
+
+#define ASSERT(expr)	\
+        if (!(expr)) {	\
+		LogMsg("<%d>Assertion failed! %s,%s,%s,line=%d\n", CRITICAL_LVL, #expr,__FILE__,__FUNCTION__,__LINE__);	\
+		__asm__ __volatile__("int3");	\
+        }
+
+#define DPRINT(mod, lvl, fmt, args...) do {\
+	if (mod & (HIWORD(vmbus_loglevel))) \
+		(lvl <= LOWORD(vmbus_loglevel))?(LogMsg("<%d>" #mod": %s() " fmt "\n", DEBUG_LVL, __FUNCTION__, ## args)):(0);\
+	} while (0)
+
+#define DPRINT_DBG(mod, fmt, args...) do {\
+	if (mod & (HIWORD(vmbus_loglevel))) \
+		(DEBUG_LVL <= LOWORD(vmbus_loglevel))?(LogMsg("<%d>" #mod": %s() " fmt "\n", DEBUG_LVL, __FUNCTION__, ## args)):(0);\
+	} while (0)
+
+#define DPRINT_INFO(mod, fmt, args...) do {\
+	if (mod & (HIWORD(vmbus_loglevel))) \
+		(INFO_LVL <= LOWORD(vmbus_loglevel))?(LogMsg("<%d>" #mod": " fmt "\n", INFO_LVL, ## args)):(0);\
+	} while (0)
+
+#define DPRINT_WARN(mod, fmt, args...) do {\
+	if (mod & (HIWORD(vmbus_loglevel))) \
+		(WARNING_LVL <= LOWORD(vmbus_loglevel))?(LogMsg("<%d>" #mod": WARNING! " fmt "\n", WARNING_LVL, ## args)):(0);\
+	} while (0)
+
+#define DPRINT_ERR(mod, fmt, args...) do {\
+	if (mod & (HIWORD(vmbus_loglevel))) \
+		(ERROR_LVL <= LOWORD(vmbus_loglevel))?(LogMsg("<%d>" #mod": %s() ERROR!! " fmt "\n", ERROR_LVL, __FUNCTION__, ## args)):(0);\
+	} while (0)
+
+#ifdef DEBUG
+#define DPRINT_ENTER(mod) do {\
+	if (mod & (HIWORD(vmbus_loglevel))) \
+		(DEBUG_LVL_ENTEREXIT <= LOWORD(vmbus_loglevel))?(LogMsg("<%d>" "["#mod"]: %s() enter\n", DEBUG_LVL, __FUNCTION__)):(0);\
+	} while (0)
+
+#define DPRINT_EXIT(mod) do {\
+	if (mod & (HIWORD(vmbus_loglevel))) \
+		(DEBUG_LVL_ENTEREXIT <= LOWORD(vmbus_loglevel))?(LogMsg("<%d>" "["#mod"]: %s() exit\n", DEBUG_LVL, __FUNCTION__)):(0);\
+	} while (0)
+#else
+#define DPRINT_ENTER(mod)
+#define DPRINT_EXIT(mod)
+#endif
+
+static inline void PrintBytes(const unsigned char* bytes, int len)
+{
+	int i=0;
+
+	LogMsg("\n<< ");
+	for (i=0; i< len; i++)
+	{
+		LogMsg("0x%x ", bytes[i]);
+	}
+	LogMsg(">>\n");
+}
+
+//
+// Inline
+//
+//static inline void GuidToStr(const GUID g, char *str)
+//{
+//	sprintf(str, "{%02x%02x%02x%02x-%02x%02x-%02x%02x-%02x%02x%02x%02x%02x%02x%02x%02x}",
+//	g[3], g[2], g[1], g[0], g[5], g[4], g[7], g[6], g[8], g[9], g[10], g[11], g[12], g[13], g[14], g[15]);
+//
+//}
+
+#endif //_LOGGING_H_
--- /dev/null
+++ b/drivers/staging/hv/include/NetVscApi.h
@@ -0,0 +1,145 @@
+/*
+ *
+ * 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 _NETVSC_API_H_
+#define _NETVSC_API_H_
+
+#include "VmbusApi.h"
+
+//
+// Defines
+//
+#define NETVSC_DEVICE_RING_BUFFER_SIZE			64*PAGE_SIZE
+
+#define HW_MACADDR_LEN		6
+
+//
+// Fwd declaration
+//
+typedef struct _NETVSC_PACKET	*PNETVSC_PACKET;
+
+
+//
+// Data types
+//
+
+typedef int (*PFN_ON_OPEN)(DEVICE_OBJECT *Device);
+typedef int (*PFN_ON_CLOSE)(DEVICE_OBJECT *Device);
+
+typedef void (*PFN_QUERY_LINKSTATUS)(DEVICE_OBJECT *Device);
+typedef int (*PFN_ON_SEND)(DEVICE_OBJECT *dev, PNETVSC_PACKET packet);
+typedef void (*PFN_ON_SENDRECVCOMPLETION)(PVOID Context);
+
+typedef int (*PFN_ON_RECVCALLBACK)(DEVICE_OBJECT *dev, PNETVSC_PACKET packet);
+typedef void (*PFN_ON_LINKSTATUS_CHANGED)(DEVICE_OBJECT *dev, UINT32 Status);
+
+// Represent the xfer page packet which contains 1 or more netvsc packet
+typedef struct _XFERPAGE_PACKET {
+	DLIST_ENTRY			ListEntry;
+
+	// # of netvsc packets this xfer packet contains
+	UINT32				Count;
+} XFERPAGE_PACKET;
+
+
+// The number of pages which are enough to cover jumbo frame buffer.
+#define NETVSC_PACKET_MAXPAGE  4
+
+// Represent netvsc packet which contains 1 RNDIS and 1 ethernet frame within the RNDIS
+typedef struct _NETVSC_PACKET {
+	// Bookkeeping stuff
+	DLIST_ENTRY				ListEntry;
+
+	DEVICE_OBJECT			*Device;
+	BOOL					IsDataPacket;
+
+	// Valid only for receives when we break a xfer page packet into multiple netvsc packets
+	XFERPAGE_PACKET		*XferPagePacket;
+
+	union {
+		struct{
+			UINT64						ReceiveCompletionTid;
+			PVOID						ReceiveCompletionContext;
+			PFN_ON_SENDRECVCOMPLETION	OnReceiveCompletion;
+		} Recv;
+		struct{
+			UINT64						SendCompletionTid;
+			PVOID						SendCompletionContext;
+			PFN_ON_SENDRECVCOMPLETION	OnSendCompletion;
+		} Send;
+	} Completion;
+
+	// This points to the memory after PageBuffers
+	PVOID					Extension;
+
+	UINT32					TotalDataBufferLength;
+	// Points to the send/receive buffer where the ethernet frame is
+	UINT32					PageBufferCount;
+	PAGE_BUFFER				PageBuffers[NETVSC_PACKET_MAXPAGE];
+
+} NETVSC_PACKET;
+
+
+// Represents the net vsc driver
+typedef struct _NETVSC_DRIVER_OBJECT {
+	DRIVER_OBJECT				Base; // Must be the first field
+
+	UINT32						RingBufferSize;
+	UINT32						RequestExtSize;
+
+	// Additional num  of page buffers to allocate
+	UINT32						AdditionalRequestPageBufferCount;
+
+	// This is set by the caller to allow us to callback when we receive a packet
+	// from the "wire"
+	PFN_ON_RECVCALLBACK			OnReceiveCallback;
+
+	PFN_ON_LINKSTATUS_CHANGED	OnLinkStatusChanged;
+
+	// Specific to this driver
+	PFN_ON_OPEN					OnOpen;
+	PFN_ON_CLOSE				OnClose;
+	PFN_ON_SEND					OnSend;
+	//PFN_ON_RECVCOMPLETION	OnReceiveCompletion;
+
+	//PFN_QUERY_LINKSTATUS		QueryLinkStatus;
+
+	void*						Context;
+} NETVSC_DRIVER_OBJECT;
+
+
+typedef struct _NETVSC_DEVICE_INFO {
+    UCHAR	MacAddr[6];
+    BOOL	LinkState;	// 0 - link up, 1 - link down
+} NETVSC_DEVICE_INFO;
+
+//
+// Interface
+//
+int
+NetVscInitialize(
+	DRIVER_OBJECT* drv
+	);
+
+#endif // _NETVSC_API_H_
--- /dev/null
+++ b/drivers/staging/hv/include/osd.h
@@ -0,0 +1,263 @@
+/*
+ *
+ * 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 _OSD_H_
+#define _OSD_H_
+
+//
+// Defines
+//
+
+#ifndef PAGE_SIZE
+#define PAGE_SIZE 0x1000
+#endif
+
+#ifndef PAGE_SHIFT
+#define PAGE_SHIFT 12
+#endif
+
+#ifndef memcpy
+#define memcpy		__builtin_memcpy
+#endif
+
+#ifndef memset
+#define memset		__builtin_memset
+#endif
+
+#ifndef memcmp
+#define memcmp		__builtin_memcmp
+#endif
+
+#ifndef strcpy
+#define strcpy		__builtin_strcpy
+#endif
+
+//
+//#ifndef sprintf
+//#define sprintf				__builtin_sprintf
+//#endif
+
+#define STRUCT_PACKED		__attribute__((__packed__))
+#define STRUCT_ALIGNED(x)	__attribute__((__aligned__(x)))
+
+#define UNUSED_VAR(v)		v  __attribute__((__unused__))
+
+#define ALIGN_UP(value, align)			( ((value) & (align-1))? ( ((value) + (align-1)) & ~(align-1) ): (value) )
+#define ALIGN_DOWN(value, align)		( (value) & ~(align-1) )
+#define NUM_PAGES_SPANNED(addr, len)	( (ALIGN_UP(addr+len, PAGE_SIZE) - ALIGN_DOWN(addr, PAGE_SIZE)) >> PAGE_SHIFT )
+
+#define MIN(a, b)       ((a) < (b)? (a): (b))
+#define MAX(a, b)       ((a) > (b)? (a): (b))
+
+#define LOWORD(dw)		((unsigned short) (dw))
+#define HIWORD(dw)		((unsigned short) (((unsigned int) (dw) >> 16) & 0xFFFF))
+
+#define FIELD_OFFSET(t, f)    ((unsigned int)(unsigned long)&(((t *)0)->f))
+
+#ifdef FALSE
+#undef FALSE
+#endif
+#define FALSE 0
+
+#ifdef TRUE
+#undef TRUE
+#endif
+#define TRUE  1
+
+#ifndef NULL
+#define NULL  (void *)0
+#endif
+
+typedef struct _DLIST_ENTRY {
+   struct _DLIST_ENTRY *Flink;
+   struct _DLIST_ENTRY *Blink;
+} DLIST_ENTRY;
+
+//
+// unsigned types
+//
+typedef unsigned char		UINT8;
+typedef unsigned short		UINT16;
+typedef unsigned int		UINT32;
+#ifdef __x86_64__
+typedef unsigned long		UINT64;
+#else
+typedef unsigned long long	UINT64;
+#endif
+
+typedef unsigned long long	ULONGLONG;
+typedef unsigned int		ULONG;
+typedef unsigned short		USHORT;
+typedef unsigned char		UCHAR;
+
+//
+// signed types
+//
+typedef char				INT8;
+typedef short				INT16;
+typedef int					INT32;
+#ifdef __x86_64__
+typedef long				INT64;
+#else
+typedef long long		INT64;
+#endif
+
+typedef int					LONG;
+typedef char				CHAR;
+typedef long long			LONGLONG;
+
+//
+// Other types
+//
+typedef unsigned long		SIZE_T;
+typedef void				VOID;
+//typedef unsigned char		GUID[16];
+typedef void*				PVOID;
+typedef unsigned char		BOOL;
+typedef unsigned char		BOOLEAN;
+typedef void*				HANDLE;
+typedef UINT32				DWORD;
+typedef char*				PCHAR;
+typedef unsigned char		BYTE;
+
+typedef unsigned long		ULONG_PTR;
+
+typedef struct {
+	unsigned char	Data[16];
+} GUID;
+
+typedef void (*PFN_WORKITEM_CALLBACK)(void* context);
+typedef void (*PFN_TIMER_CALLBACK)(void* context);
+
+
+#ifdef __x86_64__
+
+#define RDMSR(reg, v) {                                                        \
+    UINT32 h, l;                                                                 \
+     __asm__ __volatile__("rdmsr"                                                               \
+    : "=a" (l), "=d" (h)                                                       \
+    : "c" (reg));                                                              \
+    v = (((UINT64)h) << 32) | l;                                                         \
+}
+
+#define WRMSR(reg, v) {                                                        \
+    UINT32 h, l;                                                               \
+    l = (UINT32)(((UINT64)(v)) & 0xFFFFFFFF);                                  \
+    h = (UINT32)((((UINT64)(v)) >> 32) & 0xFFFFFFFF);                          \
+     __asm__ __volatile__("wrmsr"                                              \
+    : /* no outputs */                                                         \
+    : "c" (reg), "a" (l), "d" (h));                                            \
+}
+
+#else
+
+#define RDMSR(reg, v) 			                                               \
+     __asm__ __volatile__("rdmsr" 	                                           \
+    : "=A" (v) 			                                                       \
+    : "c" (reg))
+
+#define WRMSR(reg, v) 			                                               \
+     __asm__ __volatile__("wrmsr" 	                                           \
+    : /* no outputs */ 				                                           \
+    : "c" (reg), "A" ((UINT64)v))
+
+#endif
+
+
+static inline void do_cpuid(unsigned int op, unsigned int *eax, unsigned int *ebx, unsigned int *ecx, unsigned int *edx)
+{
+	__asm__ __volatile__("cpuid" : "=a" (*eax), "=b" (*ebx), "=c" (*ecx), "=d" (*edx) : "0" (op), "c" (ecx));
+}
+
+//
+// Osd routines
+//
+extern void LogMsg(const char *fmt, ...);
+
+extern void BitSet(unsigned int* addr, int value);
+extern void BitClear(unsigned int* addr, int value);
+extern int BitTest(unsigned int* addr, int value);
+extern int BitTestAndClear(unsigned int* addr, int value);
+extern int BitTestAndSet(unsigned int* addr, int value);
+
+extern int InterlockedIncrement(int *val);
+extern int InterlockedDecrement(int *val);
+extern int InterlockedCompareExchange(int *val, int new, int curr);
+
+extern void Sleep(unsigned long usecs);
+
+extern void* VirtualAllocExec(unsigned int size);
+extern void VirtualFree(void* VirtAddr);
+
+extern void* PageAlloc(unsigned int count);
+extern void PageFree(void* page, unsigned int count);
+
+extern void* MemMapIO(unsigned long phys, unsigned long size);
+extern void MemUnmapIO(void* virt);
+
+extern void* MemAlloc(unsigned int size);
+extern void* MemAllocZeroed(unsigned int size);
+extern void* MemAllocAtomic(unsigned int size);
+extern void MemFree(void* buf);
+extern void MemoryFence(VOID);
+
+extern HANDLE TimerCreate(PFN_TIMER_CALLBACK pfnTimerCB, void* context);
+extern void TimerClose(HANDLE hTimer);
+extern int TimerStop(HANDLE hTimer);
+extern void TimerStart(HANDLE hTimer, UINT32 expirationInUs);
+extern SIZE_T GetTickCount(void);
+
+extern HANDLE WaitEventCreate(void);
+extern void WaitEventClose(HANDLE hWait);
+extern void WaitEventSet(HANDLE hWait);
+extern int	WaitEventWait(HANDLE hWait);
+
+// If >0, hWait got signaled. If ==0, timeout. If < 0, error
+extern int	WaitEventWaitEx(HANDLE hWait, UINT32 TimeoutInMs);
+
+extern HANDLE SpinlockCreate(void);
+extern void SpinlockClose(HANDLE hSpin);
+extern void SpinlockAcquire(HANDLE hSpin);
+extern void	SpinlockRelease(HANDLE hSpin);
+
+
+#define GetVirtualAddress Physical2LogicalAddr
+void* Physical2LogicalAddr(ULONG_PTR PhysAddr);
+
+#define GetPhysicalAddress Logical2PhysicalAddr
+ULONG_PTR Logical2PhysicalAddr(PVOID LogicalAddr);
+
+ULONG_PTR Virtual2Physical(PVOID VirtAddr);
+
+void* PageMapVirtualAddress(unsigned long Pfn);
+void PageUnmapVirtualAddress(void* VirtAddr);
+
+
+extern HANDLE WorkQueueCreate(char* name);
+extern void WorkQueueClose(HANDLE hWorkQueue);
+extern int WorkQueueQueueWorkItem(HANDLE hWorkQueue, PFN_WORKITEM_CALLBACK workItem, void* context);
+
+extern void QueueWorkItem(PFN_WORKITEM_CALLBACK workItem, void* context);
+
+#endif // _OSD_H_
--- /dev/null
+++ b/drivers/staging/hv/include/StorVscApi.h
@@ -0,0 +1,137 @@
+/*
+ *
+ * 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 _STORVSC_API_H_
+#define _STORVSC_API_H_
+
+#include "VmbusApi.h"
+
+//
+// Defines
+//
+
+#define STORVSC_RING_BUFFER_SIZE			10*PAGE_SIZE
+#define BLKVSC_RING_BUFFER_SIZE				20*PAGE_SIZE
+
+#define STORVSC_MAX_IO_REQUESTS				64
+
+// In Hyper-V, each port/path/target maps to 1 scsi host adapter.
+// In reality, the path/target is not used (ie always set to 0) so
+// our scsi host adapter essentially has 1 bus with 1 target that contains
+// up to 256 luns.
+
+#define STORVSC_MAX_LUNS_PER_TARGET			64
+#define STORVSC_MAX_TARGETS					1
+#define STORVSC_MAX_CHANNELS				1
+
+
+// Fwd decl
+//
+//struct VMBUS_CHANNEL;
+typedef struct _STORVSC_REQUEST* PSTORVSC_REQUEST;
+
+//
+// Data types
+//
+typedef int (*PFN_ON_IO_REQUEST)(PDEVICE_OBJECT Device, PSTORVSC_REQUEST Request);
+typedef void (*PFN_ON_IO_REQUEST_COMPLTN)(PSTORVSC_REQUEST Request);
+
+typedef int (*PFN_ON_HOST_RESET)(PDEVICE_OBJECT Device);
+typedef void (*PFN_ON_HOST_RESCAN)(PDEVICE_OBJECT Device);
+
+
+// Matches Windows-end
+typedef enum _STORVSC_REQUEST_TYPE{
+	WRITE_TYPE,
+	READ_TYPE,
+	UNKNOWN_TYPE,
+} STORVSC_REQUEST_TYPE;
+
+
+typedef struct _STORVSC_REQUEST {
+	STORVSC_REQUEST_TYPE		Type;
+	UINT32					Host;
+	UINT32					Bus;
+	UINT32					TargetId;
+	UINT32					LunId;
+	UINT8*					Cdb;
+	UINT32					CdbLen;
+	UINT32					Status;
+	UINT32					BytesXfer;
+
+	UCHAR*					SenseBuffer;
+	UINT32					SenseBufferSize;
+
+	PVOID					Context;
+
+	PFN_ON_IO_REQUEST_COMPLTN	OnIOCompletion;
+
+	// This points to the memory after DataBuffer
+	PVOID					Extension;
+
+	MULTIPAGE_BUFFER		DataBuffer;
+} STORVSC_REQUEST;
+
+
+// Represents the block vsc driver
+typedef struct _STORVSC_DRIVER_OBJECT {
+	DRIVER_OBJECT			Base; // Must be the first field
+
+	// Set by caller (in bytes)
+	UINT32					RingBufferSize;
+
+	// Allocate this much private extension for each I/O request
+	UINT32					RequestExtSize;
+
+	// Maximum # of requests in flight per channel/device
+	UINT32					MaxOutstandingRequestsPerChannel;
+
+	// Set by the caller to allow us to re-enumerate the bus on the host
+	PFN_ON_HOST_RESCAN		OnHostRescan;
+
+	// Specific to this driver
+	PFN_ON_IO_REQUEST		OnIORequest;
+	PFN_ON_HOST_RESET		OnHostReset;
+
+} STORVSC_DRIVER_OBJECT;
+
+typedef struct _STORVSC_DEVICE_INFO {
+	ULONG	PortNumber;
+    UCHAR	PathId;
+    UCHAR	TargetId;
+} STORVSC_DEVICE_INFO;
+
+//
+// Interface
+//
+int
+StorVscInitialize(
+	DRIVER_OBJECT	*Driver
+	);
+
+int
+BlkVscInitialize(
+	DRIVER_OBJECT	*Driver
+	);
+#endif // _STORVSC_API_H_
--- /dev/null
+++ b/drivers/staging/hv/include/VmbusApi.h
@@ -0,0 +1,262 @@
+/*
+ *
+ * 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 _VMBUS_API_H_
+#define _VMBUS_API_H_
+
+#include "osd.h"
+
+//
+// Defines
+//
+
+#define MAX_PAGE_BUFFER_COUNT				16
+#define MAX_MULTIPAGE_BUFFER_COUNT			32 // 128K
+
+
+//
+// Fwd declarations
+//
+typedef struct _DRIVER_OBJECT *PDRIVER_OBJECT;
+typedef struct _DEVICE_OBJECT *PDEVICE_OBJECT;
+
+//
+// Data types
+//
+
+#pragma pack(push,1)
+
+// Single-page buffer
+typedef struct _PAGE_BUFFER {
+	UINT32	Length;
+	UINT32	Offset;
+	UINT64	Pfn;
+} PAGE_BUFFER;
+
+// Multiple-page buffer
+typedef struct _MULTIPAGE_BUFFER {
+	// Length and Offset determines the # of pfns in the array
+	UINT32	Length;
+	UINT32	Offset;
+	UINT64	PfnArray[MAX_MULTIPAGE_BUFFER_COUNT];
+}MULTIPAGE_BUFFER;
+
+//0x18 includes the proprietary packet header
+#define MAX_PAGE_BUFFER_PACKET			(0x18 + (sizeof(PAGE_BUFFER) * MAX_PAGE_BUFFER_COUNT))
+#define MAX_MULTIPAGE_BUFFER_PACKET		(0x18 + sizeof(MULTIPAGE_BUFFER))
+
+
+#pragma pack(pop)
+
+// All drivers
+typedef int (*PFN_ON_DEVICEADD)(PDEVICE_OBJECT Device, void* AdditionalInfo);
+typedef int (*PFN_ON_DEVICEREMOVE)(PDEVICE_OBJECT Device);
+typedef char** (*PFN_ON_GETDEVICEIDS)(void);
+typedef void (*PFN_ON_CLEANUP)(PDRIVER_OBJECT Driver);
+
+// Vmbus extensions
+//typedef int (*PFN_ON_MATCH)(PDEVICE_OBJECT dev, PDRIVER_OBJECT drv);
+//typedef int (*PFN_ON_PROBE)(PDEVICE_OBJECT dev);
+typedef int	(*PFN_ON_ISR)(PDRIVER_OBJECT drv);
+typedef void (*PFN_ON_DPC)(PDRIVER_OBJECT drv);
+typedef void (*PFN_GET_CHANNEL_OFFERS)(void);
+
+typedef PDEVICE_OBJECT (*PFN_ON_CHILDDEVICE_CREATE)(GUID DeviceType, GUID DeviceInstance, void *Context);
+typedef void (*PFN_ON_CHILDDEVICE_DESTROY)(PDEVICE_OBJECT Device);
+typedef int (*PFN_ON_CHILDDEVICE_ADD)(PDEVICE_OBJECT RootDevice, PDEVICE_OBJECT ChildDevice);
+typedef void (*PFN_ON_CHILDDEVICE_REMOVE)(PDEVICE_OBJECT Device);
+
+// Vmbus channel interface
+typedef void (*VMBUS_CHANNEL_CALLBACK)(PVOID context);
+
+typedef int	(*VMBUS_CHANNEL_OPEN)(
+	PDEVICE_OBJECT		Device,
+	UINT32				SendBufferSize,
+	UINT32				RecvRingBufferSize,
+	PVOID				UserData,
+	UINT32				UserDataLen,
+	VMBUS_CHANNEL_CALLBACK ChannelCallback,
+	PVOID				Context
+	);
+
+typedef void (*VMBUS_CHANNEL_CLOSE)(
+	PDEVICE_OBJECT		Device
+	);
+
+typedef int	(*VMBUS_CHANNEL_SEND_PACKET)(
+	PDEVICE_OBJECT		Device,
+	const PVOID			Buffer,
+	UINT32				BufferLen,
+	UINT64				RequestId,
+	UINT32				Type,
+	UINT32				Flags
+);
+
+typedef int	(*VMBUS_CHANNEL_SEND_PACKET_PAGEBUFFER)(
+	PDEVICE_OBJECT		Device,
+	PAGE_BUFFER			PageBuffers[],
+	UINT32				PageCount,
+	PVOID				Buffer,
+	UINT32				BufferLen,
+	UINT64				RequestId
+	);
+
+typedef int	(*VMBUS_CHANNEL_SEND_PACKET_MULTIPAGEBUFFER)(
+	PDEVICE_OBJECT		Device,
+	MULTIPAGE_BUFFER	*MultiPageBuffer,
+	PVOID				Buffer,
+	UINT32				BufferLen,
+	UINT64				RequestId
+);
+
+typedef int	(*VMBUS_CHANNEL_RECV_PACKET)(
+	PDEVICE_OBJECT		Device,
+	PVOID				Buffer,
+	UINT32				BufferLen,
+	UINT32*				BufferActualLen,
+	UINT64*				RequestId
+	);
+
+typedef int	(*VMBUS_CHANNEL_RECV_PACKET_PAW)(
+	PDEVICE_OBJECT		Device,
+	PVOID				Buffer,
+	UINT32				BufferLen,
+	UINT32*				BufferActualLen,
+	UINT64*				RequestId
+	);
+
+typedef int	(*VMBUS_CHANNEL_ESTABLISH_GPADL)(
+	PDEVICE_OBJECT		Device,
+	PVOID				Buffer,	// from kmalloc()
+	UINT32				BufferLen,		// page-size multiple
+	UINT32*				GpadlHandle
+	);
+
+typedef int	(*VMBUS_CHANNEL_TEARDOWN_GPADL)(
+	PDEVICE_OBJECT		Device,
+	UINT32				GpadlHandle
+	);
+
+
+typedef struct _PORT_INFO {
+	UINT32		InterruptMask;
+	UINT32		ReadIndex;
+	UINT32		WriteIndex;
+	UINT32		BytesAvailToRead;
+	UINT32		BytesAvailToWrite;
+} PORT_INFO;
+
+
+typedef struct _DEVICE_INFO {
+	UINT32		ChannelId;
+	UINT32		ChannelState;
+	GUID		ChannelType;
+	GUID		ChannelInstance;
+
+	UINT32						MonitorId;
+	UINT32						ServerMonitorPending;
+	UINT32						ServerMonitorLatency;
+	UINT32						ServerMonitorConnectionId;
+	UINT32						ClientMonitorPending;
+	UINT32						ClientMonitorLatency;
+	UINT32						ClientMonitorConnectionId;
+
+	PORT_INFO	Inbound;
+	PORT_INFO	Outbound;
+} DEVICE_INFO;
+
+typedef void (*VMBUS_GET_CHANNEL_INFO)(PDEVICE_OBJECT Device, DEVICE_INFO* DeviceInfo);
+
+typedef struct _VMBUS_CHANNEL_INTERFACE {
+	VMBUS_CHANNEL_OPEN							Open;
+	VMBUS_CHANNEL_CLOSE							Close;
+	VMBUS_CHANNEL_SEND_PACKET					SendPacket;
+	VMBUS_CHANNEL_SEND_PACKET_PAGEBUFFER		SendPacketPageBuffer;
+	VMBUS_CHANNEL_SEND_PACKET_MULTIPAGEBUFFER	SendPacketMultiPageBuffer;
+	VMBUS_CHANNEL_RECV_PACKET					RecvPacket;
+	VMBUS_CHANNEL_RECV_PACKET_PAW				RecvPacketRaw;
+	VMBUS_CHANNEL_ESTABLISH_GPADL				EstablishGpadl;
+	VMBUS_CHANNEL_TEARDOWN_GPADL				TeardownGpadl;
+	VMBUS_GET_CHANNEL_INFO						GetInfo;
+} VMBUS_CHANNEL_INTERFACE;
+
+typedef void (*VMBUS_GET_CHANNEL_INTERFACE)(VMBUS_CHANNEL_INTERFACE *Interface);
+
+// Base driver object
+typedef struct _DRIVER_OBJECT {
+	const char*				name;
+	GUID					deviceType; // the device type supported by this driver
+
+	PFN_ON_DEVICEADD		OnDeviceAdd;
+	PFN_ON_DEVICEREMOVE		OnDeviceRemove;
+	PFN_ON_GETDEVICEIDS		OnGetDeviceIds; // device ids supported by this driver
+	PFN_ON_CLEANUP			OnCleanup;
+
+	VMBUS_CHANNEL_INTERFACE VmbusChannelInterface;
+} DRIVER_OBJECT;
+
+
+// Base device object
+typedef struct _DEVICE_OBJECT {
+	DRIVER_OBJECT*		Driver;		// the driver for this device
+	char				name[64];
+	GUID				deviceType; // the device type id of this device
+	GUID				deviceInstance; // the device instance id of this device
+	void*				context;
+	void*				Extension;		// Device extension;
+} DEVICE_OBJECT;
+
+
+// Vmbus driver object
+typedef struct _VMBUS_DRIVER_OBJECT {
+	DRIVER_OBJECT		Base; // !! Must be the 1st field !!
+
+	// Set by the caller
+	PFN_ON_CHILDDEVICE_CREATE	OnChildDeviceCreate;
+	PFN_ON_CHILDDEVICE_DESTROY	OnChildDeviceDestroy;
+	PFN_ON_CHILDDEVICE_ADD		OnChildDeviceAdd;
+	PFN_ON_CHILDDEVICE_REMOVE	OnChildDeviceRemove;
+
+	// Set by the callee
+	//PFN_ON_MATCH		OnMatch;
+	//PFN_ON_PROBE		OnProbe;
+	PFN_ON_ISR				OnIsr;
+	PFN_ON_DPC				OnMsgDpc;
+	PFN_ON_DPC				OnEventDpc;
+	PFN_GET_CHANNEL_OFFERS	GetChannelOffers;
+
+	VMBUS_GET_CHANNEL_INTERFACE GetChannelInterface;
+	VMBUS_GET_CHANNEL_INFO		GetChannelInfo;
+} VMBUS_DRIVER_OBJECT;
+
+
+//
+// Interface
+//
+int
+VmbusInitialize(
+	DRIVER_OBJECT* drv
+	);
+
+#endif // _VMBUS_API_H_
--- /dev/null
+++ b/drivers/staging/hv/include/vmbus.h
@@ -0,0 +1,111 @@
+/*
+ *
+ * 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 _VMBUS_H_
+#define _VMBUS_H_
+
+#include <linux/device.h>
+
+#include "VmbusApi.h"
+
+//
+// Data types
+//
+
+typedef int (*PFN_DRIVERINITIALIZE)(DRIVER_OBJECT *drv);
+typedef int (*PFN_DRIVEREXIT)(DRIVER_OBJECT *drv);
+
+struct driver_context {
+	GUID					class_id;
+
+	struct device_driver	driver;
+
+	// Use these methods instead of the struct device_driver so 2.6 kernel stops complaining
+	int (*probe)(struct device *);
+	int (*remove)(struct device *);
+	void (*shutdown)(struct device *);
+};
+
+struct device_context {
+	struct work_struct              probe_failed_work_item;
+	GUID					class_id;
+	GUID					device_id;
+	int						probe_error;
+	struct device			device;
+	DEVICE_OBJECT			device_obj;
+};
+
+
+//
+// Global
+//
+
+//
+// Inlines
+//
+static inline struct device_context *to_device_context(DEVICE_OBJECT *device_obj)
+{
+	return container_of(device_obj, struct device_context, device_obj);
+}
+
+static inline struct device_context *device_to_device_context(struct device *device)
+{
+	return container_of(device, struct device_context, device);
+}
+
+static inline struct driver_context *driver_to_driver_context(struct device_driver *driver)
+{
+	return container_of(driver, struct driver_context, driver);
+}
+
+#if defined(KERNEL_2_6_5)
+static inline void* kzalloc(int size, int flags)
+{
+	void *p;
+	p = kmalloc(size, flags);
+	if (p) memset(p, 0, size);
+
+	return p;
+}
+#endif // KERNEL_2_6_5
+
+//
+// Vmbus interface
+//
+void
+vmbus_child_driver_register(
+	struct driver_context* driver_ctx
+	);
+
+void
+vmbus_child_driver_unregister(
+	struct driver_context *driver_ctx
+	);
+
+void
+vmbus_get_interface(
+	VMBUS_CHANNEL_INTERFACE *interface
+	);
+
+#endif // _VMBUS_H_