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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">The attached zip file contains source code, project files and instructional documents for WMI and Driver tracing.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">The password is “hgst1234”<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">We tested the changes on w7, w8 and w8.1 – 64-bit<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">Testing included sdstress, iometer, quick and slow format: MBR and GPT and scsi compliance.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">Here is a description of the various changes:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:windowtext">WMI
</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">(WindowsWmiDesc.pdf in the attached zip file gives details on using the change)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">nvme.vcxproj - Menu for "Mof Compiler"<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -Create Binary Mof File = "../../source/%(FileName).bmf"<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -WMI Syntax Check = Yes (-WMI)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> menu for Linker->Input<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -added $(DDK_LIB_PATH)\scsiwmi.lib<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> directly in the file. This directive causes VS to create nvmeMofData.h:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> <ItemGroup><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> <Wmimofck Include="../../source/nvmeMofData.bmf"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> <HeaderOuputFile>"$(IntDir)nvmeMofData.h"</HeaderOuputFile><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> <AdditionalOptions>-u -h"$(IntDir)nvmeMofData.h"</AdditionalOptions><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> </Wmimofck><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> </ItemGroup><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">nvme.rc - Added "mofResource" statement<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">nvmeMofData.bmf - Visual studio generates this file on every compile. Exists in the "source" directory.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">nvmeMofData.mof – Used to define WMI obects. Exists in the "source" directory<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">nvmeMofData.h - Visual studio generates during compile. It is created based on nvmeMofData.mof. It exists in the project's intermediate directory (e.g. nvme/x64/Win7Debug).
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">nvmeStd.c
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -NVMeFindAdapter - indicate that the driver is a wmiProvider and initialize the wmiContext.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -NVMeBuildIo - Allow calls to WMI<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -NVMeStartIo - Allow calls to WMI<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">nvmeStd.h<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -WmiLibContext - Added this structure to the device extension. The WmiLibContext structure provides registration information for a miniport
driver's data and event blocks and defines entry points for the miniport driver's HwScsiWmiXxx callback routines.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -WmiReqContext - Added this structure to the srb extension. When processing a WMI command, this structure is used to save context information
for that particular command.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">precomp.h<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -added guiddef.h, scsiwmi.h, initguid.h, nvmeMofData.h, nmeWmi.h<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:windowtext">WPP - Driver tracing
</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">(WindowsTraceCollection.pdf in the attached zip file gives details on using the change)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">Relied heavily on the document "Using Storage Tracing Support In Miniport Drivers" - http://download.microsoft.com/download/8/e/8/8e85288f-b718-47d9-a7b2-af19d4c8f031/Storage-tracing-for-miniports.doc<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">nvme.vcxproj - in the Menu for "Wpp Tracing"<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -Func to Gen Trace = StorStorPortDebugPrint(LEVEL,MSG,...)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -Run Wpp Tracing = Yes<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -Scan Configuration Data = ..\..\source\nvme_tracing.h<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -Specify Template File = {km-StorDefault.tpl}*.tmh<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -Trace Kernel-Mode Components = Yes (-km)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">All c-files: Added include for "nvmeinit.tmh". A Visual Studio generated file to support driver tracing.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">nvmeStd.c - create a global variable for storing the trace context information. At cleanup time, the Port Driver calls a cleanup routine that uses this global
variable.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -DriverEntry - Include code to initialize driver tracing through wpp.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -WppCleanupRoutine - Added code to be called by the port driver to clean up driver tracing.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">nvmeStd.h -
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -add function prototype for Wpp Cleanup routine.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -Changed values for debug print levels to match values in evntrace.h<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> INFO = TRACE_LEVEL_INFORMATION,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> WARNING = TRACE_LEVEL_WARNING,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> ERROR = TRACE_LEVEL_ERROR,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> TRACE = TRACE_LEVEL_VERBOSE<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">precomp.h<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -added nvme_tracing.h<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:windowtext">Various Fixes<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">nvme.vcxproj<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -Changed c/c++ compiler warning level to W3/WX<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">nvmeSnti.c</span>
<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> SntiTranslateReadCapacity16 - The caller’s response buffer was being cleared and set up without regard to its size. I put in changes to allocate a read
capacity buffer on the stack. Once that temporary buffer was filled in, I used the response buffer size to determine how much data to copy into the caller’s response buffer.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#C00000">NOTE: It appears this same issue occurs in the handling of other scsi commands (e.g. in
</span><span style="font-size:9.5pt;font-family:Consolas;color:#C00000;background:white;mso-highlight:white">SntiTranslateDeviceIdentificationPage</span><span style="font-size:9.5pt;font-family:Consolas;color:#C00000">, if the response buffer was too short,
setting the fields in <span style="background:white;mso-highlight:white">pIdDescriptor</span> would overrun the response buffer). This may be a fix to be implemented in the future. The issue in SntiTranslateReadCapacity16 issue was seen during testing. The
potential issue with <span style="background:white;mso-highlight:white">SntiTranslateDeviceIdentificationPage</span> has not occurred in our testing.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:9.5pt;font-family:Consolas"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> SnitTranslateUnmap
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -Changes to ensure the DataSetManagement buffer was always 16-byte aligned.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -Use prp2 to allow the prplist to cross a page boundary
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -When building the dsm-deallocate command, cdw10->NR was used to count the number of ranges - starting with the value 1. Since NR is a zero-based
value, the count was decremented when command building was completed. Unfortunately, when 256 ranges are specified, NR has a value of 0 before decrementing. The value of 0 prevented the code from decrementing NR. A change was made to use a local uint16 variable
to cound the number of ranges.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> SntiTranslateWriteBuffer - The existing code set dword10 as a 1-based value. A change was made to correctly set this as a zero-based value.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> SntiTranslateLogSense - A pointer to the data buffer is saved in the srb extension. A change was made to also save the data buffer length in the srb
extension. The value is used when the data buffer is freed.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">nvmeStd.h<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -Increase size of dsmBuffer to allow for 16-byte alignment.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"> -add dataBufferSize to store size of data buffer allocated for log sense command.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">Tom Freeman<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">Software Engineer,</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">
</span><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">Device Manager and Driver Development
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">HGST, a Western Digital company<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext"><a href="mailto:Thomas.Freeman@hgst.com"><span style="color:#0563C1">Thomas.Freeman@hgst.com</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:windowtext">507-322-2311<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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