Staging: hv: add the Hyper-V driver header files
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>
diff --git a/drivers/staging/hv/include/StorVscApi.h b/drivers/staging/hv/include/StorVscApi.h
new file mode 100644
index 0000000..492a1d2
--- /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_