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<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Hello All,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">My name is Sagi and I am quite new to NVME, actually making my first steps.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p><span style="color:#1F497D">I am currently trying to send an NVME IDNTIFY command to the device, but unfortunately I keep getting “</span>The request could not be performed because of an I/O device error.”.<o:p></o:p></p>
<p><span style="color:#1F497D">The code I am using is largely taken from PT_IOCTL document.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:blue">#define</span> <span style="color:#010001">NVME_PT_TIMEOUT</span> 240<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">BOOL</span> <span style="color:#010001">Status</span> = 0;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">DWORD</span> <span style="color:#010001">Count</span> = 0;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">DWORD</span> <span style="color:#010001">InputBufLen</span> = 0;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">DWORD</span> <span style="color:#010001">OutputBufLen</span> = 0;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">PNVME_PASS_THROUGH_IOCTL</span> <span style="color:#010001">
pInBuffer</span> = <span style="color:#010001">NULL</span>;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">PNVME_PASS_THROUGH_IOCTL</span> <span style="color:#010001">
pOutBuffer</span> = <span style="color:#010001">NULL</span>;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">DWORD</span> <span style="color:#010001">size_of_identify_buffer</span> =0x1000;
<span style="color:green">//4k<o:p></o:p></span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";color:green;background:white;mso-highlight:white"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:green">/* Allocate input buffer to accommodate size of NVME_PASS_THRUGH_IOCTL only */<o:p></o:p></span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">InputBufLen</span> = <span style="color:blue">sizeof</span>(<span style="color:#010001">NVME_PASS_THROUGH_IOCTL</span>);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">pInBuffer</span> = (<span style="color:#010001">PNVME_PASS_THROUGH_IOCTL</span>)
<span style="color:#010001">malloc</span>(<span style="color:#010001">InputBufLen</span>);
<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:green">/* Allocate output buffer to accommodate size of NVME_PASS_THRUGH_IOCTL and data */<o:p></o:p></span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">OutputBufLen</span> = <span style="color:blue">sizeof</span>(<span style="color:#010001">NVME_PASS_THROUGH_IOCTL</span>) +
<span style="color:#010001">size_of_identify_buffer</span> - 1;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">pOutBuffer</span> = (<span style="color:#010001">PNVME_PASS_THROUGH_IOCTL</span>)
<span style="color:#010001">malloc</span>(<span style="color:#010001">OutputBufLen</span>);
<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:blue">if</span> (<span style="color:#010001">pInBuffer</span> ==
<span style="color:#010001">NULL</span> || <span style="color:#010001">pOutBuffer</span> ==
<span style="color:#010001">NULL</span>)<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white"> {<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">cout</span><<<span style="color:#A31515">"ERROR allocating buffers for identify command \n"</span>;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:blue">return</span> <span style="color:#010001">ERROR_INVALID_PARAM</span>;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white"> }<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:green">/* Zero out the buffers */<o:p></o:p></span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">memset</span>(<span style="color:#010001">pInBuffer</span>, 0,
<span style="color:#010001">InputBufLen</span>);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">memset</span>(<span style="color:#010001">pOutBuffer</span>, 0,
<span style="color:#010001">OutputBufLen</span>);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:green">/* Populate SRB_IO_CONTROL fields in input buffer */<o:p></o:p></span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">pInBuffer</span>-><span style="color:#010001">SrbIoCtrl</span>.<span style="color:#010001">ControlCode</span> = (<span style="color:#010001">ULONG</span>)<span style="color:#010001">NVME_PASS_THROUGH_SRB_IO_CODE</span>;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">pInBuffer</span>-><span style="color:#010001">SrbIoCtrl</span>.<span style="color:#010001">HeaderLength</span> =
<span style="color:blue">sizeof</span>(<span style="color:#010001">SRB_IO_CONTROL</span>);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">memcpy</span>((<span style="color:#010001">UCHAR</span>*)(&<span style="color:#010001">pInBuffer</span>-><span style="color:#010001">SrbIoCtrl</span>.<span style="color:#010001">Signature</span>[0]),
<span style="color:#010001">NVME_SIG_STR</span>, <span style="color:#010001">NVME_SIG_STR_LEN</span>);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">pInBuffer</span>-><span style="color:#010001">SrbIoCtrl</span>.<span style="color:#010001">Timeout</span> =
<span style="color:#010001">NVME_PT_TIMEOUT</span>;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">pInBuffer</span>-><span style="color:#010001">SrbIoCtrl</span>.<span style="color:#010001">Length</span> =
<span style="color:#010001">InputBufLen</span> - <span style="color:blue">sizeof</span>(<span style="color:#010001">SRB_IO_CONTROL</span>);<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">pInBuffer</span>-><span style="color:#010001">Direction</span> =
<span style="color:#010001">NVME_FROM_DEV_TO_HOST</span>;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">pInBuffer</span>-><span style="color:#010001">NVMeCmd</span>[0]=0x6;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">pInBuffer</span>-><span style="color:#010001">NVMeCmd</span>[10]=0x1;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">pInBuffer</span>-><span style="color:#010001">DataBufferLen</span> =
<span style="color:#010001">ByteSizeTX</span>;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">pInBuffer</span>-><span style="color:#010001">ReturnBufferLen</span>=<span style="color:#010001">OutputBufLen</span>;<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">Status</span> = <span style="color:#010001">DeviceIoControl</span>(<o:p></o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">disk_handle</span>, <span style="color:green">
/* Handle to \\.\scsi device via CreateFile */<o:p></o:p></span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">IOCTL_SCSI_MINIPORT</span>, <span style="color:green">
/* IO control function to a miniport driver */<o:p></o:p></span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">pInBuffer</span> , <span style="color:green">
/* Input buffer with data sent to driver */<o:p></o:p></span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">InputBufLen</span>, <span style="color:green">
/* Length of data sent to driver (in bytes) */<o:p></o:p></span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">pOutBuffer</span>, <span style="color:green">
/* Output buffer with data received from driver */<o:p></o:p></span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">OutputBufLen</span>, <span style="color:green">
/* Length of data received from driver */<o:p></o:p></span></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white"> &<span style="color:#010001">Count</span>,
<span style="color:green">/* Bytes placed in DataBuffer */<o:p></o:p></span></span></p>
<p><span style="font-family:"Verdana","sans-serif";background:white;mso-highlight:white">
<span style="color:#010001">NULL</span>); <span style="color:green">
/* NULL = no overlap */</span></span><span style="font-family:"Verdana","sans-serif";color:green"><o:p></o:p></span></p>
<p><span style="font-family:"Verdana","sans-serif";color:green"><o:p> </o:p></span></p>
<p><span style="color:#1F497D">In addition, I have launched “DebugView” on the test machine and I seem to get the following messages, produced by sending the IOCTL<o:p></o:p></span></p>
<p><span style="color:#1F497D">“<o:p></o:p></span></p>
<p><span style="color:#1F497D">55461250000 - STORMINI: NVMeProcessIoctl: Code = 0xe0002000, Signature = 0xNvmeMinið<o:p></o:p></span></p>
<p><span style="color:#1F497D">55461250000 - STORMINI: NVMeGetPhysAddr: <Error> Invalid phys addr.<o:p></o:p></span></p>
<p><span style="color:#1F497D">“<o:p></o:p></span></p>
<p><span style="color:#1F497D">Can you please help me to understand what am I doing wrong ?
<o:p></o:p></span></p>
<p><span style="color:#1F497D"><o:p> </o:p></span></p>
<p>Thank you, <o:p></o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:14.0pt;color:#1F497D">Sagi Bar</span><span style="color:#1F497D"><br>
Test & Tools Staff FW Engineer<br>
</span></b><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D"><img width="61" height="12" id="Picture_x0020_1" src="cid:image001.png@01CF954C.A683EAB0" alt="cid:image001.png@01CEA3CD.FE1957E0"><br>
</span><span style="color:#7F7F7F">7 Atir Yeda St, Kfar – Saba 44425, Israel<br>
T: +</span><span style="color:gray">972-9-7632774 </span><span style="color:#7F7F7F">| M: +</span><span style="color:gray">972-54-7665567 </span><span style="color:#7F7F7F"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#7F7F7F">F: +</span><span style="color:gray">972-3-5488666 </span><span style="color:#7F7F7F"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><a href="mailto:sagi.bar@SanDisk.com"><span style="color:blue">sagi.bar@SanDisk.com</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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