windows-xp/Source/XPSP1/NT/drivers/wdm/usb/specs/i82930.doc

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w
here appropriate. Microsoft shall not be liable for any damages arising out of or in connection with the use of these specifications, including liability for lost profit, business interruption, or any other damages whatsoever. Some states do not allow the
 exclusion or limitation of liability or consequential or incidental damages; the above limitation may not apply to you. 
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NT are trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries. Other product and company names mentioned herein may be the trademarks of their respective owners.
\par \'a9\~1997\~Microsoft\~Corporation. All rights reserved.
\par }\pard\plain \s31\sb20\sa60\sl-220\slmult0\keepn\nowidctlpar\widctlpar\adjustright \b\fs19\cgrid {{\*\bkmkstart _Toc324035518}{\*\bkmkstart _Toc324035584}{\*\bkmkstart _Toc324064341}{\*\bkmkstart _Toc324064446}{\*\bkmkstart _Toc324126415}
{\*\bkmkstart _Toc325420562}{\*\bkmkstart _Toc325941761}{\*\bkmkstart _Toc325941835}{\*\bkmkstart _Toc327597423}{\*\bkmkstart _Toc327836240}{\*\bkmkstart _Toc327836405}{\*\bkmkstart _Toc327836708}{\*\bkmkstart _Toc327858794}{\*\bkmkstart _Toc327862029}

\par Revision History
\par }\trowd \trgaph108\trleft-108\trkeep \clvertalt\clbrdrb\brdrs\brdrw15 \cltxlrtb \cellx1440\clvertalt\clbrdrb\brdrs\brdrw15 \cltxlrtb \cellx7020\pard\plain \s25\sb20\sa60\sl-220\slmult0\keepn\nowidctlpar\widctlpar\intbl\adjustright \b\fs19\cgrid {
{\*\bkmkend _Toc324035518}{\*\bkmkend _Toc324035584}{\*\bkmkend _Toc324064341}{\*\bkmkend _Toc324064446}{\*\bkmkend _Toc324126415}{\*\bkmkend _Toc325420562}{\*\bkmkend _Toc325941761}{\*\bkmkend _Toc325941835}{\*\bkmkend _Toc327597423}
{\*\bkmkend _Toc327836240}{\*\bkmkend _Toc327836405}{\*\bkmkend _Toc327836708}{\*\bkmkend _Toc327858794}{\*\bkmkend _Toc327862029}Date\cell Description\cell }\pard\plain \nowidctlpar\widctlpar\intbl\adjustright \fs20\cgrid {\b \row }\trowd 
\trgaph108\trleft-108\trkeep \clvertalt\cltxlrtb \cellx1440\clvertalt\cltxlrtb \cellx7020\pard\plain \s26\sb20\sa60\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx280\tx560\adjustright \fs19\cgrid {1/6/97\cell January 97 Preview draft\cell }\pard\plain 
\nowidctlpar\widctlpar\intbl\adjustright \fs20\cgrid {\row }\pard\plain \s23\sa160\nowidctlpar\widctlpar\adjustright \fs21\cgrid {
\par }\pard\plain \s26\sb20\sa60\sl-220\slmult0\nowidctlpar\widctlpar\tx280\tx560\adjustright \fs19\cgrid {
\par }\pard\plain \s23\sa160\nowidctlpar\widctlpar\adjustright \fs21\cgrid {\page }{\fs40 Contents
\par }\pard\plain \s32\qr\sl-20\slmult0\keepn\nowidctlpar\widctlpar\brdrt\brdrs\brdrw15 \adjustright \fs8\cgrid {
\par }\pard\plain \s16\sl-220\slmult0\keepn\nowidctlpar\widctlpar\tqr\tldot\tx8640\adjustright \fs19\cgrid {\field\fldedit{\*\fldinst { TOC \\o "1-3" }}{\fldrslt {\lang1024 Overview\tab }{\field{\*\fldinst {\lang1024  PAGEREF _Toc381778549 \\h }{\lang1024 
{\*\datafield 08d0c9ea79f9bace118c8200aa004ba90b02000000080000000e0000005f0054006f0063003300380031003700370038003500340039000000}}}{\fldrslt {\lang1024 3}}}{\lang1024 
\par Background Notes\tab }{\field{\*\fldinst {\lang1024  PAGEREF _Toc381778550 \\h }{\lang1024 {\*\datafield 08d0c9ea79f9bace118c8200aa004ba90b02000000080000000e0000005f0054006f0063003300380031003700370038003500350030000000}}}{\fldrslt {\lang1024 3}}}{
\lang1024 
\par }\pard\plain \s29\li280\sl-220\slmult0\nowidctlpar\widctlpar\tqr\tldot\tx8640\adjustright \fs19\cgrid {\lang1024 Notes on Writing USB Device Minidrivers\tab }{\field{\*\fldinst {\lang1024  PAGEREF _Toc381778551 \\h }{\lang1024 {\*\datafield 
08d0c9ea79f9bace118c8200aa004ba90b02000000080000000e0000005f0054006f0063003300380031003700370038003500350031000000}}}{\fldrslt {\lang1024 4}}}{\lang1024 
\par }\pard\plain \s16\sl-220\slmult0\keepn\nowidctlpar\widctlpar\tqr\tldot\tx8640\adjustright \fs19\cgrid {\lang1024 Anatomy of the Sample Minidriver\tab }{\field{\*\fldinst {\lang1024  PAGEREF _Toc381778552 \\h }{\lang1024 {\*\datafield 
08d0c9ea79f9bace118c8200aa004ba90b02000000080000000e0000005f0054006f0063003300380031003700370038003500350032000000}}}{\fldrslt {\lang1024 4}}}{\lang1024 
\par Event-driven Walkthrough of the Sample Minidriver\tab }{\field{\*\fldinst {\lang1024  PAGEREF _Toc381778553 \\h }{\lang1024 {\*\datafield 08d0c9ea79f9bace118c8200aa004ba90b02000000080000000e0000005f0054006f0063003300380031003700370038003500350033000000}}
}{\fldrslt {\lang1024 6}}}{\lang1024 
\par References\tab }{\field{\*\fldinst {\lang1024  PAGEREF _Toc381778554 \\h }{\lang1024 {\*\datafield 08d0c9ea79f9bace118c8200aa004ba90b02000000080000000e0000005f0054006f0063003300380031003700370038003500350034000000}}}{\fldrslt {\lang1024 6}}}{\lang1024 

\par }\pard\plain \s29\li280\sl-220\slmult0\nowidctlpar\widctlpar\tqr\tldot\tx8640\adjustright \fs19\cgrid {\lang1024\highlight7 LIST THEM HERE}{\lang1024 \tab }{\field{\*\fldinst {\lang1024  PAGEREF _Toc381778555 \\h }{\lang1024 {\*\datafield 
08d0c9ea79f9bace118c8200aa004ba90b02000000080000000e0000005f0054006f0063003300380031003700370038003500350035000000}}}{\fldrslt {\lang1024 6}}}{\lang1024 
\par Reference to Other Microsoft-supplied Samples\tab }{\field{\*\fldinst {\lang1024  PAGEREF _Toc381778556 \\h }{\lang1024 {\*\datafield 08d0c9ea79f9bace118c8200aa004ba90b02000000080000000e0000005f0054006f0063003300380031003700370038003500350036000000}}
}{\fldrslt {\lang1024 6}}}{\lang1024 
\par }\pard\plain \s1\sb200\sa80\sl-440\slmult0\keepn\nowidctlpar\widctlpar\outlinelevel0\adjustright \fs34\cgrid }}\pard\plain \s1\sb200\sa80\sl-440\slmult0\keepn\nowidctlpar\widctlpar\outlinelevel0\adjustright \fs34\cgrid {\fs19 \page }{
{\*\bkmkstart _Toc381778549}Overview{\*\bkmkend _Toc381778549}
\par }\pard\plain \s23\sa160\nowidctlpar\widctlpar\adjustright \fs21\cgrid {
The purpose of this Design Note is to document I82930, which is a sample USB device minidriver that is provided by Microsoft, in source-code form, to give the user assistance in writing their own minidriver.
 To be of maximum value, this document requires the user to have the following additional materials close at hand.
\par {\pntext\pard\plain\s21 \f3\fs21\cgrid \loch\af3\dbch\af0\hich\f3 \'b7\tab}}\pard\plain \s21\fi-360\li360\sa80\nowidctlpar\widctlpar\tx280\jclisttab\tx360{\*\pn \pnlvlblt\ilvl0\ls34\pnrnot0\pnf3\pnstart1\pnindent360\pnhang{\pntxtb \'b7}}\ls34\adjustright 
\fs21\cgrid {\i USB Driver and Minidriver Design Notes and Reference}{, which is another of the documents in the Memphis DDK. All USB device driver-provided function calls made by this sample minidriver are documented here.
\par {\pntext\pard\plain\s21 \f3\fs21\cgrid \loch\af3\dbch\af0\hich\f3 \'b7\tab}}\pard \s21\fi-360\li360\sa80\nowidctlpar\widctlpar\tx280\jclisttab\tx360{\*\pn \pnlvlblt\ilvl0\ls34\pnrnot0\pnf3\pnstart1\pnindent360\pnhang{\pntxtb \'b7}}\ls34\adjustright {\i 
WDM Design Notes and Reference}{, which is another of the documents in the Memphis DDK. References for I/O Request Packets (IRPs) that are used by this sample minidriver are documented here.
\par {\pntext\pard\plain\s21 \f3\fs21\cgrid \loch\af3\dbch\af0\hich\f3 \'b7\tab}}\pard \s21\fi-360\li360\sa80\nowidctlpar\widctlpar\tx280\jclisttab\tx360{\*\pn \pnlvlblt\ilvl0\ls34\pnrnot0\pnf3\pnstart1\pnindent360\pnhang{\pntxtb \'b7}}\ls34\adjustright {
The I82930 source-code files. After you install the WDM DDK, these source code files can be located at }{\highlight7 [}{\i\highlight7 path to be determined}{\highlight7 ].}{ \line 
\par }\pard\plain \s23\sa160\nowidctlpar\widctlpar\adjustright \fs21\cgrid {I82930 is a driver for the Intel 82930 USB test board. This sample demonstrates how a minidriver gets loaded, and how it submits requests to the USB Driver Interface (USBDI).
\par There are additional device-specific sample minidrivers located on this Memphis DDK. See the section titled \ldblquote Reference to Other Microsoft-provided Samples\rdblquote  for a list of additional sample minidrivers 
provided by Microsoft to give the user assistance in writing their own minidriver. The focus of this Design Note is on the USB device sample minidriver. No attempt is made here to explain the USB Driver Interface -- a \ldblquote and then a miracle occurs
\rdblquote  attitude is taken with regard to USBDI.
\par This Design Note is organized as follows:
\par }\pard\plain \s24\sl-240\slmult0\keepn\nowidctlpar\widctlpar\adjustright \fs21\cgrid {\b Background Notes
\par }\pard\plain \s18\li200\sa80\nowidctlpar\widctlpar\adjustright \fs21\cgrid {Provides important information relevant to writing USB device minidrivers.\line Clarifies the minidriver\rquote 
s role in a layered architecture, by showing what lives above and below it.\line Describes the nature of resources available to the minidriver.
\par }\pard\plain \s24\sl-240\slmult0\keepn\nowidctlpar\widctlpar\adjustright \fs21\cgrid {\b Anatomy of the Sample Minidriver
\par }\pard\plain \s18\li200\sa80\nowidctlpar\widctlpar\adjustright \fs21\cgrid {Provides a table that illustrates the anatomy of this sample minidriver.
\par }\pard\plain \s24\sl-240\slmult0\keepn\nowidctlpar\widctlpar\adjustright \fs21\cgrid {\b Event-driven Walkthrough of the Sample Minidriver
\par }\pard\plain \s18\li200\sa80\nowidctlpar\widctlpar\adjustright \fs21\cgrid {Provides helpful commentary on the sample source code.\line Identifies those portions of the minidriver that the user needs to adapt to meet their particular device requirements.

\par }\pard\plain \s24\sl-240\slmult0\keepn\nowidctlpar\widctlpar\adjustright \fs21\cgrid {\b References
\par }\pard\plain \s18\li200\sa80\nowidctlpar\widctlpar\adjustright \fs21\cgrid {References to material helpful toward understanding this sample minidriver.\line A reference to other Microsoft-provided sample minidrivers.
\par }\pard\plain \s1\sb200\sa80\sl-440\slmult0\keepn\nowidctlpar\widctlpar\outlinelevel0\adjustright \fs34\cgrid {{\*\bkmkstart _Toc381778550}Background Notes{\*\bkmkend _Toc381778550}
\par }\pard\plain \s23\sa160\nowidctlpar\widctlpar\adjustright \fs21\cgrid {A minidriver is a hardware-specific DLL that uses a Microsoft-provided class driver to accomplish most action
s through function calls, and provides only device-specific controls. Under WDM, the minidriver registers each adapter with the class driver, and the class driver creates a device object to represent each adapter that registers. The registration process i
s described in }{\i WDM Design Notes and Reference.}{ The minidriver uses the class driver\rquote s device object to make system calls.
\par }{A WDM USB device driver communicates with a WDM USB stack through an IRP interface. There are two ways to call DDIs:
\par {\pntext\pard\plain\s21 \f3\fs21\cgrid \loch\af3\dbch\af0\hich\f3 \'b7\tab}}\pard\plain \s21\fi-360\li360\sa80\nowidctlpar\widctlpar\tx280{\*\pn \pnlvlblt\ilvl0\ls40\pnrnot0\pnf3\pnstart1\pnindent360\pnhang{\pntxtb \'b7}}\ls40\adjustright \fs21\cgrid {
The client device driver passes USB Request Block (URB) structures to the next-lower driver as a parameter in an IRP with Irp->Majo
rFunction set to IRP_MJ_INTERNAL_DEVICE_CONTROL and the next IRP stack location Parameters.DeviceIoControl.IoControlCode field set to IOCTL_INTERNAL_USB_SUBMIT_URB.
\par {\pntext\pard\plain\s21 \f3\fs21\cgrid \loch\af3\dbch\af0\hich\f3 \'b7\tab}}\pard \s21\fi-360\li360\sa80\nowidctlpar\widctlpar\tx280{\*\pn \pnlvlblt\ilvl0\ls40\pnrnot0\pnf3\pnstart1\pnindent360\pnhang{\pntxtb \'b7}}\ls40\adjustright {
The client device driver passes an IRP with Irp->Majorfunction set to IRP_MJ_INTERNAL_DEVICE_CONTROL, and the next IRP stack location Parameters.DeviceIoControl.IoControlCode field set to one of the other IOCTL_INTERNAL_USB_ function codes. \line 
\par }\pard\plain \s23\sa160\nowidctlpar\widctlpar{\*\pn \pnlvlcont\ilvl0\ls0\pnrnot0\pndec }\adjustright \fs21\cgrid {The client device driver and bus driver share information in the common structures USBD_INTERFACE_INFORMATION and USBD_PIPE_INFORMATION.

\par }{\b {\*\bkmkstart _Toc370556571}{\*\bkmkstart _Toc381151170}I/O Request Packet (IRP) Transfers}{{\*\bkmkend _Toc370556571}{\*\bkmkend _Toc381151170}
. IRPs are passed to the next lower driver by using the WDM function IoCallDriver with the device object of the next lower driver as a
 parameter.The device object of the next lower driver for all USB client device drivers is the DeviceObject returned from the call to IoAttachDeviceToStack.
\par }{\b {\*\bkmkstart _Toc370556575}{\*\bkmkstart _Toc381151172}USB Request Block (URB) Transfers}{{\*\bkmkend _Toc370556575}{\*\bkmkend _Toc381151172}. Clients send
 these requests to the bus by including them in an IRP a pointer to a URB structure; a function code within the URB identifies the specific request. For transfer requests, multiple URB structures may be linked and passed in with a single IRP.}{ }{
The USB driver stack components assume all URB structures passed to them are allocated from the nonpaged pool.
\par }{\b {\*\bkmkstart _Toc370556576}{\*\bkmkstart _Toc381151173}Common URB Header Structure}{{\*\bkmkend _Toc370556576}{\*\bkmkend _Toc381151173}. Different URB structures are defined for each function. However, every URB has a commo}{n header, _URB_HEADER}{
. The header portion of a URB must always be initialized with the input parameters }{\i Length }{and }{\i Function}{, and will always return the output parameter }{\i Status}{.
\par }{\b {\*\bkmkstart _Toc370556577}{\*\bkmkstart _Toc381151174}Bandwidth Allocation}{{\*\bkmkend _Toc370556577}{\*\bkmkend _Toc381151174}
. Bandwidth allocation occurs through the process of selecting a configuration or interface and acquiring open pipe handles. While a driver holds an open handle for a specific pipe, the bandwidth necessary to transfer data on that pipe (based 
on maximum packet size and service interval) is reserved.
\par }{\b {\*\bkmkstart _Toc370556578}{\*\bkmkstart _Toc381151175}IOCTL Codes}{. For a discussion of the IOCTL codes that a USB client device driver must use, see }{\i USB Driver and Minidriver Design Notes and Reference}{.
\par }{\b URB Transfer Requests}{{\*\bkmkend _Toc370556578}{\*\bkmkend _Toc381151175}. For a discussion of URB transfer requests: transfer flags, status codes, halt/stall behavior, and linked URBs, see }{\i USB Driver and Minidriver Design Notes and Reference}
{.
\par }\pard\plain \s2\sb140\sa60\sl-380\slmult0\keepn\nowidctlpar\widctlpar{\*\pn \pnlvlcont\ilvl0\ls0\pnrnot0\pndec }\outlinelevel1\adjustright \fs30\cgrid {{\*\bkmkstart _Toc381778551}Notes on Writing USB Device Minidrivers{\*\bkmkend _Toc381778551}
\par {\pntext\pard\plain\s21 \f3\fs21\highlight7\cgrid \loch\af3\dbch\af0\hich\f3 \'b7\tab}}\pard\plain \s21\fi-360\li360\sa80\nowidctlpar\widctlpar\tx280{\*\pn \pnlvlblt\ilvl0\ls27\pnrnot0\pnf3\pnstart1\pnindent360\pnhang{\pntxtb \'b7}}\ls27\adjustright 
\fs21\cgrid {\highlight7 [}{\i\highlight7 need notes???}{\highlight7 ]}{\line 
\par }\pard\plain \s23\sa160\nowidctlpar\widctlpar\adjustright \fs21\cgrid {This section has described general issues relevant to writing USB device minidrivers. Now you are ready to start looking at the SONYDCR source code. The following section is an 
\ldblquote anatomy\rdblquote  of the sample minidriver code in terms of C modules and driver entry points.
\par }\pard\plain \s1\sb200\sa80\sl-440\slmult0\keepn\nowidctlpar\widctlpar\outlinelevel0\adjustright \fs34\cgrid {{\*\bkmkstart _Toc380474380}{\*\bkmkstart _Toc381778552}Anatomy of the Sample Minidriver{\*\bkmkend _Toc380474380}{\*\bkmkend _Toc381778552}

\par }\pard\plain \s23\sa160\nowidctlpar\widctlpar\adjustright \fs21\cgrid {After you install the WDM DDK, the following source code files can be located at [}{\i path to be determined}{].
\par }\trowd \trgaph108\trleft-108 \clvertalt\cltxlrtb \cellx1440\clvertalt\cltxlrtb \cellx8748\pard\plain \s26\sb20\sa60\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx280\tx560\adjustright \fs19\cgrid {I82930.c\cell 
Shows how a driver gets loaded, and how it submits requests to the USB Driver Interface.\cell }\pard\plain \nowidctlpar\widctlpar\intbl\adjustright \fs20\cgrid {\row }\pard\plain \s35\qr\sl-160\slmult0\nowidctlpar\widctlpar\adjustright \fs12\cgrid {

\par }\pard\plain \s23\sa160\nowidctlpar\widctlpar\adjustright \fs21\cgrid {After you install the WDM DDK, the following header files can be located at [}{\i path to be determined}{].
\par }\pard\plain \s26\sb20\sa60\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx280\tx560\adjustright \fs19\cgrid {I82930.h\cell Contains structures that are samples of information that could be used in a device extension structure.\cell }\pard\plain 
\nowidctlpar\widctlpar\intbl\adjustright \fs20\cgrid {\row }\pard\plain \s35\qr\sl-160\slmult0\nowidctlpar\widctlpar\adjustright \fs12\cgrid {
\par }\pard\plain \s23\sa160\nowidctlpar\widctlpar\adjustright \fs21\cgrid {
These sample files are heavily commented, to aid the user in understanding their purpose and their relationship to the stream class driver. Documentation for the DDIs referenced below may be found in }{\i 
USB Driver and Minidriver Design Notes and Reference}{, in }{\i WDM Design Notes and Reference}{
, or in the source code files for the sample minidriver, listed above. Documentation for the class driver DDIs can be quickly found by looking to the Table of Contents for these documents. When DDIs are part of the sample min
idriver source code, their file locations are noted in parentheses.\line 
\par }\trowd \trgaph108\trleft-108 \clvertalt\cltxlrtb \cellx4080\clvertalt\cltxlrtb \cellx8760\pard\plain \s25\sb20\sa60\sl-220\slmult0\keepn\nowidctlpar\widctlpar\intbl\adjustright \b\fs19\cgrid {Minidriver DDI\cell Description\cell }\pard\plain 
\nowidctlpar\widctlpar\intbl\adjustright \fs20\cgrid {\row }\trowd \trgaph108\trleft-108 \clvertalt\cltxlrtb \cellx4080\clvertalt\cltxlrtb \cellx8760\pard\plain \s20\sl-220\slmult0\nowidctlpar\widctlpar\intbl
\tx390\tx780\tx1170\tx1560\tx1950\tx2340\tx2730\tx3120\tx3510\tx3900\tx4290\tx4680\tx5070\tx5460\tx5850\tx6240\tx6630\adjustright \f2\fs16\cgrid {NTSTATUS  DriverEntry(
\par   IN PDRIVER_OBJECT  DriverObject,
\par   IN PUNICODE_STRING  RegistryPath
\par   );\cell }\pard\plain \s26\sb20\sa60\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx280\tx560\adjustright \fs19\cgrid {Installable driver initialization entry point. This entry point is called directly by the I/O system.\cell }\pard\plain 
\nowidctlpar\widctlpar\intbl\adjustright \fs20\cgrid {\fs21 \row }\pard\plain \s20\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx390\tx780\tx1170\tx1560\tx1950\tx2340\tx2730\tx3120\tx3510\tx3900\tx4290\tx4680\tx5070\tx5460\tx5850\tx6240\tx6630\adjustright 
\f2\fs16\cgrid {NTSTATUS  I82930_Dispatch(
\par   IN PDEVICE_OBJECT  DeviceObject,
\par   IN PIRP  Irp
\par   );\cell }\pard\plain \s26\sb20\sa60\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx280\tx560\adjustright \fs19\cgrid {Process the IRPs sent to this device.\cell }\pard\plain \nowidctlpar\widctlpar\intbl\adjustright \fs20\cgrid {\fs21 \row }\pard\plain 
\s20\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx390\tx780\tx1170\tx1560\tx1950\tx2340\tx2730\tx3120\tx3510\tx3900\tx4290\tx4680\tx5070\tx5460\tx5850\tx6240\tx6630\adjustright \f2\fs16\cgrid {VOID  I82930_Unload(
\par   IN PDRIVER_OBJECT  DriverObject
\par   );\cell }\pard\plain \s26\sb20\sa60\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx280\tx560\adjustright \fs19\cgrid {Free allocated resources.\cell }\pard\plain \nowidctlpar\widctlpar\intbl\adjustright \fs20\cgrid {\fs21 \row }\pard\plain 
\s20\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx390\tx780\tx1170\tx1560\tx1950\tx2340\tx2730\tx3120\tx3510\tx3900\tx4290\tx4680\tx5070\tx5460\tx5850\tx6240\tx6630\adjustright \f2\fs16\cgrid {NTSTATUS  I82930_StartDevice(
\par   IN PDEVICE_OBJECT  DeviceObject
\par   );\cell }\pard\plain \s26\sb20\sa60\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx280\tx560\adjustright \fs19\cgrid {Initializes a given instance of the device on the USB. The device descriptor is obtained and stored.\cell }\pard\plain 
\nowidctlpar\widctlpar\intbl\adjustright \fs20\cgrid {\fs21 \row }\pard\plain \s20\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx390\tx780\tx1170\tx1560\tx1950\tx2340\tx2730\tx3120\tx3510\tx3900\tx4290\tx4680\tx5070\tx5460\tx5850\tx6240\tx6630\adjustright 
\f2\fs16\cgrid {NTSTATUS  I82930_RemoveDevice(
\par   IN PDEVICE_OBJECT  DeviceObject
\par   );\cell }\pard\plain \s26\sb20\sa60\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx280\tx560\adjustright \fs19\cgrid {Stops a given instance of an 82930 device on the USB.\cell }\pard\plain \nowidctlpar\widctlpar\intbl\adjustright \fs20\cgrid {\fs21 \row 
}\pard\plain \s20\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx390\tx780\tx1170\tx1560\tx1950\tx2340\tx2730\tx3120\tx3510\tx3900\tx4290\tx4680\tx5070\tx5460\tx5850\tx6240\tx6630\adjustright \f2\fs16\cgrid {NTSTATUS  I82930_StopDevice(
\par   IN PDEVICE_OBJECT  DeviceObject
\par   );\cell }\pard\plain \s26\sb20\sa60\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx280\tx560\adjustright \fs19\cgrid {Stops a given instance of an 82930 device on the USB.\cell }\pard\plain \nowidctlpar\widctlpar\intbl\adjustright \fs20\cgrid {\fs21 \row 
}\pard\plain \s20\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx390\tx780\tx1170\tx1560\tx1950\tx2340\tx2730\tx3120\tx3510\tx3900\tx4290\tx4680\tx5070\tx5460\tx5850\tx6240\tx6630\adjustright \f2\fs16\cgrid {NTSTATUS  I82930_PnPAddDevice(
\par   IN PDRIVER_OBJECT  DriverObject,
\par   IN PDEVICE_OBJECT  PhysicalDeviceObject
\par   );\cell }\pard\plain \s26\sb20\sa60\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx280\tx560\adjustright \fs19\cgrid {Creates a new instance of the device.\cell }\pard\plain \nowidctlpar\widctlpar\intbl\adjustright \fs20\cgrid {\fs21 \row }\pard\plain 
\s20\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx390\tx780\tx1170\tx1560\tx1950\tx2340\tx2730\tx3120\tx3510\tx3900\tx4290\tx4680\tx5070\tx5460\tx5850\tx6240\tx6630\adjustright \f2\fs16\cgrid {NTSTATUS  I82930_CreateDeviceObject(
\par   IN PDRIVER_OBJECT  DriverObject,
\par   IN PDEVICE_OBJECT  *DeviceObject,
\par   LONG Instance
\par   );\cell }\pard\plain \s26\sb20\sa60\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx280\tx560\adjustright \fs19\cgrid {Creates a FunctionalDeviceObject.\cell }\pard\plain \nowidctlpar\widctlpar\intbl\adjustright \fs20\cgrid {\fs21 \row }\pard\plain 
\s20\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx390\tx780\tx1170\tx1560\tx1950\tx2340\tx2730\tx3120\tx3510\tx3900\tx4290\tx4680\tx5070\tx5460\tx5850\tx6240\tx6630\adjustright \f2\fs16\cgrid {NTSTATUS  I82930_CallUSBD(
\par   IN PDEVICE_OBJECT  DeviceObject,
\par   IN PURB Urb
\par   );\cell }\pard\plain \s26\sb20\sa60\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx280\tx560\adjustright \fs19\cgrid {Passes a URB to the USBD class driver.\cell }\pard\plain \nowidctlpar\widctlpar\intbl\adjustright \fs20\cgrid {\fs21 \row }\pard\plain 
\s20\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx390\tx780\tx1170\tx1560\tx1950\tx2340\tx2730\tx3120\tx3510\tx3900\tx4290\tx4680\tx5070\tx5460\tx5850\tx6240\tx6630\adjustright \f2\fs16\cgrid {NTSTATUS  I82930_ConfigureDevice(
\par   IN PDEVICE_OBJECT  DeviceObject
\par   );\cell }\pard\plain \s26\sb20\sa60\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx280\tx560\adjustright \fs19\cgrid {Initializes a given instance of the device on the USB and selects the configuration.\cell }\pard\plain 
\nowidctlpar\widctlpar\intbl\adjustright \fs20\cgrid {\fs21 \row }\pard\plain \s20\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx390\tx780\tx1170\tx1560\tx1950\tx2340\tx2730\tx3120\tx3510\tx3900\tx4290\tx4680\tx5070\tx5460\tx5850\tx6240\tx6630\adjustright 
\f2\fs16\cgrid {NTSTATUS  I82930_SelectInterface(
\par   IN PDEVICE_OBJECT  DeviceObject,
\par   IN PUSB_CONFIGURATION_DESCRIPTOR\line     ConfigurationDescriptor,
\par   PUSB_INTERFACE_INFORMATION  Interface
\par   );\cell }\pard\plain \s26\sb20\sa60\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx280\tx560\adjustright \fs19\cgrid {Initializes an 82930 with multiple interfaces.\cell }\pard\plain \nowidctlpar\widctlpar\intbl\adjustright \fs20\cgrid {\fs21 \row 
}\pard\plain \s20\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx390\tx780\tx1170\tx1560\tx1950\tx2340\tx2730\tx3120\tx3510\tx3900\tx4290\tx4680\tx5070\tx5460\tx5850\tx6240\tx6630\adjustright \f2\fs16\cgrid {VOID  I82930_Cleanup(
\par   PDEVICE_OBJECT  DeviceObject
\par   (;\cell }\pard\plain \s26\sb20\sa60\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx280\tx560\adjustright \fs19\cgrid {???\cell }\pard\plain \nowidctlpar\widctlpar\intbl\adjustright \fs20\cgrid {\fs21 \row }\pard\plain \s20\sl-220\slmult0
\nowidctlpar\widctlpar\intbl\tx390\tx780\tx1170\tx1560\tx1950\tx2340\tx2730\tx3120\tx3510\tx3900\tx4290\tx4680\tx5070\tx5460\tx5850\tx6240\tx6630\adjustright \f2\fs16\cgrid {NTSTATUS  I82930_BuildPipeList(
\par   IN PDEVICE_OBJECT  DeviceObject
\par   );\cell }\pard\plain \s26\sb20\sa60\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx280\tx560\adjustright \fs19\cgrid {???\cell }\pard\plain \nowidctlpar\widctlpar\intbl\adjustright \fs20\cgrid {\fs21 \row }\pard\plain \s20\sl-220\slmult0
\nowidctlpar\widctlpar\intbl\tx390\tx780\tx1170\tx1560\tx1950\tx2340\tx2730\tx3120\tx3510\tx3900\tx4290\tx4680\tx5070\tx5460\tx5850\tx6240\tx6630\adjustright \f2\fs16\cgrid {NTSTATUS  I82930_ResetPipe(
\par   IN PDEVICE_OBJECT  DeviceObject,
\par   IN PI82930_PIPE  Pipe
\par   );\cell }\pard\plain \s26\sb20\sa60\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx280\tx560\adjustright \fs19\cgrid {Reset both pipes associated with a video channel on the camera.\cell }\pard\plain \nowidctlpar\widctlpar\intbl\adjustright \fs20\cgrid {
\fs21 \row }\pard\plain \s20\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx390\tx780\tx1170\tx1560\tx1950\tx2340\tx2730\tx3120\tx3510\tx3900\tx4290\tx4680\tx5070\tx5460\tx5850\tx6240\tx6630\adjustright \f2\fs16\cgrid {VOID  I82930_DecrementIoCount(
\par   IN PDEVICE_OBJECT  DeviceObject
\par   );\cell }\pard\plain \s26\sb20\sa60\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx280\tx560\adjustright \fs19\cgrid {???\cell }\pard\plain \nowidctlpar\widctlpar\intbl\adjustright \fs20\cgrid {\fs21 \row }\trowd \trgaph108\trleft-108 \clvertalt\cltxlrtb 
\cellx4080\clvertalt\cltxlrtb \cellx8760\pard\plain \s20\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx390\tx780\tx1170\tx1560\tx1950\tx2340\tx2730\tx3120\tx3510\tx3900\tx4290\tx4680\tx5070\tx5460\tx5850\tx6240\tx6630\adjustright \f2\fs16\cgrid {
VOID  I82930_IncrementIoCount(
\par   IN PDEVICE_OBJECT  DeviceObject
\par   );\cell }\pard\plain \s26\sb20\sa60\sl-220\slmult0\nowidctlpar\widctlpar\intbl\tx280\tx560\adjustright \fs19\cgrid {???\cell }\pard\plain \nowidctlpar\widctlpar\intbl\adjustright \fs20\cgrid {\fs21 \row }\pard\plain 
\s23\sa160\nowidctlpar\widctlpar\adjustright \fs21\cgrid {
\par }\pard\plain \s1\sb200\sa80\sl-440\slmult0\keepn\nowidctlpar\widctlpar\outlinelevel0\adjustright \fs34\cgrid {{\*\bkmkstart _Toc381778553}Event-driven Walkthrough of the Sample Minidriver{\*\bkmkend _Toc381778553}
\par }\pard\plain \s23\sa160\nowidctlpar\widctlpar\adjustright \fs21\cgrid {
The following steps briefly describe ??????????????????? for the sample USB device minidriver. The sample minidriver routines mentioned here are described in greater detail in the comments of the sample source code and i
n routine-specific notes that follow.
\par {\pntext\pard\plain\s23 \fs21\highlight7\cgrid \hich\af0\dbch\af0\loch\f0 1.\tab}}\pard \s23\fi-360\li360\sa160\nowidctlpar\widctlpar\jclisttab\tx360{\*\pn \pnlvlbody\ilvl0\ls35\pnrnot0\pndec\pnstart1\pnindent360\pnhang{\pntxta .}}\ls35\adjustright {
\highlight7 [}{\i\highlight7 need event-driven walkthrough}{\highlight7 ]}{
\par }\pard\plain \s1\sb200\sa80\sl-440\slmult0\keepn\nowidctlpar\widctlpar\outlinelevel0\adjustright \fs34\cgrid {{\*\bkmkstart _Toc381778554}References{\*\bkmkend _Toc381778554}
\par }\pard\plain \s23\sa160\nowidctlpar\widctlpar\adjustright \fs21\cgrid {Documentation for the class driver DDIs can be quickly found by looking to the Table of Contents for }{\i WDM Design Notes and Reference,}{ or }{\i USB Drive
r and Minidriver Design Notes and Reference}{. However, some DDIs need additional documentation when viewed in the context of this sample minidriver.
\par }\pard\plain \s2\sb140\sa60\sl-380\slmult0\keepn\nowidctlpar\widctlpar\outlinelevel1\adjustright \fs30\cgrid {\highlight7 {\*\bkmkstart _Toc381778555}LIST THEM HERE}{{\*\bkmkend _Toc381778555}
\par {\*\bkmkstart _Toc381778556}Reference to Other Microsoft-supplied Samples{\*\bkmkend _Toc381778556}
\par }\pard\plain \s23\sa160\nowidctlpar\widctlpar\adjustright \fs21\cgrid {The following Microsoft-supplied minidrivers are available as part of this Memphis DDK.
\par }{\i SCSAMPLE: Stream Class Sample Minidriver Design Notes }{documents the SCSAMPLE sample minidriver. The location of the sample source code is given in that document. (}{\i need info on demonstration value of this minidriver}{)
\par 
\par }}