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<p class="MsoNormal">Hi, everyone,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My team is starting to work on Windows driver based on nvmewin reference driver. Thanks for sharing such excellent work.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I have a question around IOCTL: which file path should I open in order to send the call to?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The PT_IOCTL.doc in the library suggests to open file handle on
<a href="file:///\\.\ScsiN">\\.\ScsiN</a>: before sending DeviceIoControl() down. Unfortunately, our Windows driver never receives anything. The SPTI tool sample in WDK says ScsiN: only works when the device is unclaimed by a SCSI driver. In the case, proper
PathId, TargetId, and Lun must be set in the SCSI pass thru structure, but NVME_PASS_THROUGH_IOCTL doesn’t have these fields.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">According to <a href="http://msdn.microsoft.com/en-us/library/windows/hardware/ff556013(v=vs.85).aspx">
MSDN</a>, IOCTL send to storage class drivers are mapped to SRBs with function set to SRB_FUNCTION_EXECUTE_SCSI. If I open
<a href="file:///\\.\PhysicalDriveN">\\.\PhysicalDriveN</a>, then I do receive SRBs with such Execute SCSI function code. But the current driver code expects SRB_FUNCTION_IO_CONTROL.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">How do you guys do it?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Many thanks in advance,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:华文细黑;color:black">Yong Chen<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:华文细黑;color:black">Storage Architect<br>
</span><span lang="ZH-CN" style="font-size:10.0pt;font-family:宋体;color:black">华为技术有限公司</span><span style="font-size:10.0pt;font-family:华文细黑;color:black"> Huawei Technologies Co., Ltd<o:p></o:p></span></p>
<p class="MsoNormal"><!--[if gte vml 1]><v:shapetype id="_x0000_t75" coordsize="21600,21600" o:spt="75" o:preferrelative="t" path="m@4@5l@4@11@9@11@9@5xe" filled="f" stroked="f">
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</v:shapetype><v:shape id="ridImg" o:spid="_x0000_s1026" type="#_x0000_t75" alt="Company_logo" style='position:absolute;margin-left:0;margin-top:0;width:76.5pt;height:24pt;z-index:251657728;visibility:visible;mso-wrap-style:square;mso-wrap-distance-left:0;mso-wrap-distance-top:0;mso-wrap-distance-right:0;mso-wrap-distance-bottom:0;mso-position-horizontal:left;mso-position-horizontal-relative:text;mso-position-vertical:absolute;mso-position-vertical-relative:line' o:allowoverlap="f">
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</v:shape><![endif]--><![if !vml]><img width="102" height="32" src="cid:image002.jpg@01CD9FDE.03227B80" align="left" alt="Company_logo" v:shapes="ridImg"><![endif]><span style="font-size:10.0pt;font-family:华文细黑;color:black">Office:
408-330-5482<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Cambria","serif";color:black">Mobile: 425-922-0658</span><span style="font-size:10.0pt;font-family:华文细黑;color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black">Email: yong.sc.chen@huawei.com<br>
2330 Central Expressway<br>
Santa Clara, CA 95050<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black">http://www.huawei.com<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="ZH-CN" style="font-size:7.5pt;font-family:宋体;color:gray">本邮件及其附件含有华为公司的保密信息，仅限于发送给上面地址中列出的个人或群组。禁</span><span style="font-size:7.5pt;font-family:华文细黑;color:gray"><br>
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</span><span lang="ZH-CN" style="font-size:7.5pt;font-family:宋体;color:gray">的信息。如果您错收了本邮件，请您立即电话或邮件通知发件人并删除本邮件！</span><span style="font-size:7.5pt;font-family:华文细黑;color:gray"><br>
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