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<div style="border-left: medium none; border-right: medium none; border-top: medium none; border-bottom: 1.5pt solid windowtext; padding-left: 0in; padding-right: 0in; padding-top: 0in; padding-bottom: 1.0pt"> <p class="MsoNormal" style="border: medium none; padding: 0in"><b> <span style="font-size: 30.0pt; font-family: Arial Black">WinHEC 99 White Paper </span></b></div><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" style="border-collapse: collapse"> <tr> <td width="295" valign="top" style="width: 221.4pt; padding-left: 5.4pt; padding-right: 5.4pt; padding-top: 0in; padding-bottom: 0in"> <p class="Tt">Windows<span style="font-size: 8.0pt">�</span> Hardware Engineering Conference:<br> Advancing the Platform</td> <td width="304" valign="top" style="width: 228.0pt; padding-left: 5.4pt; padding-right: 5.4pt; padding-top: 0in; padding-bottom: 0in"> <p class="MsoNormal" align="right" style="text-align: right"> </td> </tr></table><p class="Ch"><a name="_Toc441982198">Windows 2000 Instrumentation: WMI and ACPI</a></p><p class="Tt">Abstract</p><div style="mso-border-top-alt: solid windowtext .75pt; border-left: medium none; border-right: medium none; border-top: 1.0pt solid windowtext; border-bottom: medium none; padding: 0in"> <p class="Tr"> </div><p class="MsoNormal">This paper describes the process that system manufacturers (OEMs) can use to provide instrumentation information by including ACPI objects in the systems they build that will be recognized by Microsoft� Windows� Management Instrumentation (WMI). This information applies for Windows 2000 and Windows 98 OSR 1. By including ACPI objects in the systems they build, OEMs can take advantage of a generic mapping driver that allows WMI to make the information available to the instrumentation consumers.</p><p class="MsoNormal"> </p><p class="MsoNormal">The ACPI subsystem contains a wealth of instrumentation information; OEMs are encouraged to use ACPI to add additional platform specific instrumentation information. However, ACPI objects are not readily accessible by instrumentation data consumers such as Web-Based Enterprise Management (WBEM).</p><p class="MsoNormal"> </p><p class="MsoNormal">This paper assumes the reader is familiar with driver mapping under Windows operating systems and the Data Block GUID Mapping control method for WMI. References for background and details are cited at http://www.microsoft.com/hwdev/manageability/; ACPI implementation information is available at http://www.teleport.com/~acpi/.</p><p class="MsoNormal"> </p><p class="MsoNormal"><!--[if supportFields]> DATE \@ "MMMM d, yyyy" \*
MERGEFORMAT <![endif]-->March 12, 1999<!--[if supportFields]><![endif]--></p><p class="Le"> </p><p class="Le"> </p><p class="Tt">Disclaimer and Copyright</p><div style="mso-border-top-alt: solid windowtext .75pt; border-left: medium none; border-right: medium none; border-top: 1.0pt solid windowtext; border-bottom: medium none; padding: 0in"> <p class="Tr"> </div><p class="Tpf" style="line-height: 9.0pt"><b><span style="font-size: 8.0pt">Microsoft Disclaimer: </span></b><span style="font-size: 7.0pt">This document is for informational purposes only. MICROSOFT MAKES NO WARRANTIES, EXPRESS OR IMPLIED, IN THIS DOCUMENT.</span></p><p class="Tpf" style="line-height: 9.0pt"><span style="font-size: 7.0pt">Microsoft Corporation may have patents or pending patent applications, trademarks, copyrights, or other intellectual property rights covering subject matter in this document. The furnishing of this document does not give you any license to the patents, trademarks, copyrights, or other intellectual property rights except as expressly provided in any written license agreement from Microsoft Corporation. </span></p><p class="Tpf" style="line-height: 9.0pt"><span style="font-size: 7.0pt">Microsoft does not make any representation or warranty regarding specifications in this document or any product or item developed based on these specifications. Microsoft disclaims all express and implied warranties, including but not limited to the implied warranties or merchantability, fitness for a particular purpose and freedom from infringement. Without limiting the generality of the foregoing, Microsoft does not make any warranty of any kind that any item developed based on these specifications, or any portion of a specification, will not infringe any copyright, patent, trade secret or other intellectual property right of any person or entity in any country. It is your responsibility to seek licenses for such intellectual property rights where 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. </span></p><p class="Tpf" style="line-height: normal"><span style="font-size: 7.0pt">Microsoft, DirectX, MS‑DOS, Win32, Windows, and Windows NT are registered trademarks of Microsoft Corporation. Other product and company names mentioned herein may be the trademarks of their respective owners.</span></p><p class="Tpf" style="line-height: normal"><span style="font-size: 7.0pt">� 1999 Microsoft Corporation. All rights reserved.</span></p><p class="Tt"> </p><p class="Tt">Contents</p><div style="mso-border-top-alt: solid windowtext .75pt; border-left: medium none; border-right: medium none; border-top: 1.0pt solid windowtext; border-bottom: medium none; padding: 0in"> <p class="Tr"> </div><p class="MsoToc1"><!--[if supportFields]> TOC \o "1-2" <![endif]-->Technology Overview for Windows 2000 Instrumentation.......................................................................................<!--[if supportFields]>PAGEREF _Toc445868966 \h <![endif]-->3<!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000E0000005F0054006F0063003400340035003800360038003900360036000000</w:data></xml><![endif]--><!--[if supportFields]><![endif]--></p><p class="MsoToc1">WMI Overview for Windows 2000 Instrumentation...................................................................................................<!--[if supportFields]>PAGEREF _Toc445868967 \h <![endif]-->3<!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000E0000005F0054006F0063003400340035003800360038003900360037000000</w:data></xml><![endif]--><!--[if supportFields]><![endif]--></p><p class="MsoToc1">ACPI-to-WMI Mapper Goals for Windows 2000 Instrumentation...........................................................................<!--[if supportFields]>PAGEREF _Toc445868968 \h <![endif]-->4<!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000E0000005F0054006F0063003400340035003800360038003900360038000000</w:data></xml><![endif]--><!--[if supportFields]><![endif]--></p><p class="MsoToc1">ACPI Control Method Naming Conventions and Functionality for Windows 2000 Instrumentation................ <!--[if supportFields]>PAGEREF
_Toc445868969 \h <![endif]-->5<!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000E0000005F0054006F0063003400340035003800360038003900360039000000</w:data></xml><![endif]--><!--[if supportFields]><![endif]--></p><p class="MsoToc1">Data Block Design for Windows 2000 Instrumentation.............................................................................................<!--[if supportFields]>PAGEREF _Toc445868970 \h <![endif]-->8<!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000E0000005F0054006F0063003400340035003800360038003900370030000000</w:data></xml><![endif]--><!--[if supportFields]><![endif]--></p><p class="MsoToc1">FAQ about WMI and ACPI for Windows 2000 Instrumentation...........................................................................<!--[if supportFields]>PAGEREF _Toc445868971 \h <![endif]-->11<!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000E0000005F0054006F0063003400340035003800360038003900370031000000</w:data></xml><![endif]--><!--[if supportFields]><![endif]--></p><p class="MsoToc1"><span style="layout-grid-mode: line">ASL Methods and Sample Code</span>..................................................................................................................................<!--[if supportFields]>PAGEREF _Toc445868972 \h <![endif]-->11<!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000E0000005F0054006F0063003400340035003800360038003900370032000000</w:data></xml><![endif]--><!--[if supportFields]><![endif]--></p><p class="MsoToc2"><span style="layout-grid-mode: line">ASL Sample Code for an Event and Initiating Method</span>......................................................................................<!--[if supportFields]>PAGEREF _Toc445868973 \h <![endif]-->12<!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000E0000005F0054006F0063003400340035003800360038003900370033000000</w:data></xml><![endif]--><!--[if supportFields]><![endif]--></p><p class="MsoToc2">Sample ASL Code Embedding MOD Data in ASL..............................................................................................<!--[if supportFields]>PAGEREF _Toc445868974 \h <![endif]-->14<!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000E0000005F0054006F0063003400340035003800360038003900370034000000</w:data></xml><![endif]--><!--[if supportFields]><![endif]--></p><p class="MsoToc2">Sample .Mof File.......................................................................................................................................................<!--[if supportFields]>PAGEREF _Toc445868975 \h <![endif]-->17<!--[if gte mso 9]><xml>
<w:data>08D0C9EA79F9BACE118C8200AA004BA90B02000000080000000E0000005F0054006F0063003400340035003800360038003900370035000000</w:data></xml><![endif]--><!--[if supportFields]><![endif]--></p><p class="Le"><!--[if supportFields]><![endif]--> </p><p><span style="font-size: 20.0pt; font-family: Arial"><br clear="all" style="page-break-before: always"> </span></p><div style="mso-border-top-alt: solid windowtext .5pt; border-left: medium none; border-right: medium none; border-top: 1.0pt solid windowtext; border-bottom: medium none; padding-left: 0in; padding-right: 0in; padding-top: 1.0pt; padding-bottom: 0in"> <h1><a name="_Toc440694666">Technology Overview</a> for Windows 2000 Instrumentation</h1></div><p class="MsoNormal">The ACPI-to-WMI mapping functionality is achieved by means of two device drivers provided with the Windows 2000 and Windows 98 OSR1 operating systems: </p><p class="MsoListBullet"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span>Acpi.sys is the regular ACPI device driver with some modifications. </p><p class="MsoListBullet"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span>Wmiacpi.sys registers with Plug and Play ID PNP0c14. </p><p class="Le"> </p><p class="MsoNormal">OEMs can differentiate their PC system capabilities by writing ACPI Source Language (ASL) code and a Managed Object Format (.mof or MOF) file. The .mof file can be in the BIOS or on disk. For more information about MOF, see the �MOF Data Types� section later in this paper.</p><p class="MsoNormal"> </p><p class="MsoNormal">ASL code is never executed directly by the Wmiacpi.sys driver. ASL code is always executed by the Acpi.sys driver (see the ASL information at http://www.teleport.com/~acpi/). Wmiacpi.sys will invoke Acpi.sys to call control methods that access the management data exposed by the mapping driver.</p><p class="MsoNormal"> </p><p class="MsoNormal">Microsoft does not ship a .mof file that is associated with the Wmiacpi.sys driver. The only information surfaced through ACPI is the temperature zone information, which is surfaced through and associated with the Acpi.sys device driver. </p><p class="MsoNormal"> </p><div style="mso-border-top-alt: solid windowtext .5pt; border-left: medium none; border-right: medium none; border-top: 1.0pt solid windowtext; border-bottom: medium none; padding-left: 0in; padding-right: 0in; padding-top: 1.0pt; padding-bottom: 0in"> <h1><a name="_Toc440694667">WMI Overview</a> for Windows 2000 Instrumentation</h1></div><p class="MsoNormal">WMI organizes individual data items (properties) into data blocks (structures) that contain related information. Data blocks may have one or more data items. Each data item has a unique index within the data block, and each data block is named by a globally unique 128-bit number called a globally unique identifier (GUID). WMI can provide notifications to the data producer as to when to start and stop collecting the data items that compose a data block. WMI has no knowledge of the data format for individual data blocks.</p><p class="MsoNormal"> </p><p class="MsoNormal">WMI functionality allows for querying all instances of a data block or a single instance of a data block. It also allows for setting all data items in an instance of a data block or a single data item within a single instance of a data block.</p><p class="MsoNormal"> </p><p class="MsoNormal">In addition to queries and sets, WMI allows WMI method calls, which are functionally equivalent to an I/O control (IOCTL) call to a device. Each WMI method call is identified by a GUID and a method index for that GUID. All WMI method calls use one buffer for input and output parameters. WMI allows notifications of significant events to be delivered to interested user-mode applications. Each type of event is uniquely named by a GUID. Events may also carry a data block with additional information about the event. WMI can provide notifications to the event generator about when to enable and disable an event type.</p><p class="MsoNormal"> </p><p class="MsoNormal">WMI is an open architecture that allows OEMs to define their own data blocks, methods, and events. Along with the data that composes the custom data block, the OEM must also provide a description that generally represents how a data block or WMI method is mapped to a 2-character ID. This 2‑character ID is part of the names of the control methods that act upon the data block. </p><p class="MsoNormal"> </p><p class="MsoNormal">For example, when a call is made to query about the data block represented by a WMI GUID, the mapper will evaluate the WQ<i>xx</i> control method (where <i>xx</i> is the 2-character ID mapped to that GUID). These mappings are defined by the ACPI code and obtained by the mapper evaluating the _WDG control method. For more information, see �ACPI Control Method Naming Conventions and Functionality� later in this paper.</p><p class="MsoNormal"> </p><p class="MsoNormal">The mapping process is similar for events. The _WDG control method provides a mapping between the WMI event GUID that represents the event and the notification code specified in the ASL notify instruction. For example, when ACPI provides a callback to the mapper that a control method executed a <b>notify(mapper-device, 0x81)</b><i> </i>function<i>,</i> the mapper will look up the WMI GUID mapped to 0x81 and use this WMI GUID in building the WMI event. Before launching the WMI event, the mapper will evaluate _WED to retrieve any additional data that belongs with the event.</p><p class="MsoNormal"> </p><p class="MsoNormal"><a name="_Toc409597061"><b>Loading the Mapping Driver</b></a><b>.</b>The Plug and Play ID PNP0c14 is assigned as the WMI-mapping pseudo device; the operating system device INFs (Plug and Play ID-to-device driver lookup table) point this Plug and Play ID to the ACPI-to-WMI mapping driver. To cause the ACPI-to-WMI mapping driver to load, an ACPI system needs to define one or more devices with that Plug and Play ID in the ACPI device tree. Each device declared in the ACPI device tree would have its own operating system device object with its own set of mappings. </p><p class="MsoNormal"> </p><p class="MsoNormal">In this way, different sets of data blocks can be organized in the appropriate place within the device tree. This organization allows the different devices and their corresponding data blocks to come and go from the ACPI device tree. Note that if there are multiple WMI-mapping pseudo devices in the ACPI device tree, each device must have a unique value for its _UID.</p><p class="MsoNormal"> </p><p class="MsoNormal"><a name="_Toc409597062"><b>Mapping Driver Functionality</b></a><b>.</b>Essentially the mapping driver will do the following:</p><p class="MsoListBullet"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span>Manage all registration and unregistration with WMI and other interactions with the operating system. This registration of data and data blocks is done when the mapper gets the IRP_MN_REGINFO IRP.</p><p class="MsoListBullet"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span>At WMI initialization time, the mapping driver will query an ACPI method for the list of data block, event, and method GUIDs it supports, as well as the mapping from the GUID to control method IDs. With this information, the mapping driver will register those GUIDs with WMI.</p><p class="MsoListBullet"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span>Translate data block queries, sets, and method call I/O IRPs into the appropriate ACPI control method call.</p><p class="MsoListBullet"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span>Receive notifications from the ACPI event handler control methods and relaunch them as WMI events.</p><p class="MsoListBullet"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span>Translate strings between ASCIZ and UNICODE for data blocks marked as wholly composed of a string.</p><p class="Le"> </p><div style="mso-border-top-alt: solid windowtext .5pt; border-left: medium none; border-right: medium none; border-top: 1.0pt solid windowtext; border-bottom: medium none; padding-left: 0in; padding-right: 0in; padding-top: 1.0pt; padding-bottom: 0in"> <h1><a name="_Toc440694668">ACPI-to-WMI Mapper Goals</a> for Windows 2000 Instrumentation</h1></div><p class="MsoNormal">The following list describes the goals for the ACPI-to-WMI mapper:</p><p class="MsoListBullet"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span>Expose data maintained by the hardware or firmware and accessible through ACPI to user-mode instrumentation data consumers, such as WBEM or DMI.</p><p class="MsoListBullet"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span>Allow specific ACPI control methods to be called from a user-mode instrumentation data consumer or hardware configuration application�for example, from a control panel applet.</p><p class="MsoListBullet"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span>Deliver specific ACPI events to all user-mode callers that request notification of that particular event.</p><p class="MsoListBullet"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span>Allow OEMs to include OEM-specific data blocks, user-mode�callable ACPI control methods, and events without requiring any changes to the ACPI-to-WMI mapper.</p><p class="MsoListBullet"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span>Allow general-purpose data consumer applications�those written without any special knowledge of the data blocks exposed by a particular machine�to be able to access and understand the data blocks, user-mode�callable ACPI control methods, and events being mapped�including those that are OEM specific.</p><p class="MsoListBullet"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span>Define standard data block formats, user-mode�callable ACPI control methods, events and their WMI GUID mappings for common data blocks, and callable control methods and events expected to be provided by all OEMs. This can include dynamic data and functions identified by the industry in the SMBIOS specification and other specifications.</p><p class="Le"> </p><p class="MsoNormal">These goals are achieved by having supporting code in the ACPI-to-WMI mapper (Wmiacpi.sys) as well as in the core ACPI code itself (Acpi.sys).</p><p class="MsoNormal"> </p><p class="MsoNormal">The following are <i>not</i> goals for the ACPI-to-WMI mapper:</p><p class="MsoListBullet" style="page-break-after: avoid"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span>To have specific knowledge about any data block that passes through the mapper.</p><p class="MsoListBullet"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span>To provide interfaces specifically for SMBIOS data and functions. The mapper is an open architecture that is not restricted to SMBIOS data and functionality.</p><p class="Le"> </p><p class="MsoNormal"><a name="_Toc440962623"><b>How SMBIOS-provided information is handled</b></a><b>. </b>Vendors who want to provide OEM and system-specific instrumentation data may choose to use SMBIOS as the mechanism. To use the capabilities of the WMI infrastructure to surface this SMBIOS data, they must conform to any SMBIOS version between 2.0 and 2.2. (Microsoft intends to support future revisions of SMBIOS as and when they appear. To date, we have only one SMBIOS 2.2 machine for testing). This allows the Microsoft Win32<span style="font-size: 8.0pt">�</span> provider�which is shipped with Windows 2000 and future versions of Windows and is available as an update to Windows 98�to populate almost all of the SMBIOS-provided information into the CIMv2 namespace. In particular, almost all of the information is put into Win32 classes. Some of these Win32 classes are derived from the CIMv2.1 physical MOF. </p><p class="MsoNormal"> </p><p class="MsoNormal">The one exception where SMBIOS information will not be automatically populated by the Win32 provider into the CIMv2 namespace is SMBIOS vendor-specific data. Such SMBIOS vendor-defined data will be placed in a �VendorBucket� class in a �Root\VendorDefined� namespace, and will not be available in the CIMv2 namespace by default. Any system vendor who wants to provide such data must write a provider that will interpret this data.</p><p class="MsoNormal"> </p><p class="MsoNormal">The SMBIOS data is read only once, either at boot time in Windows 2000 or post boot on Windows 98. Dynamic updates that are made to the SMBIOS data after it has been read will not be reflected in the namespaces in this implementation. Microsoft is working with the industry to define standard ACPI methods for dynamic updates.</p><p class="MsoNormal"> </p><p class="MsoNormal">The SMBIOS raw data will be available as a WMI data block in Windows 2000 and as a flat file in Windows 98. This data will be interpreted and populated into the namespaces by the Win32 provider.</p><p class="MsoNormal"> </p><p class="MsoNormal"><b>Note:</b> The Win32 provider capabilities used to read and populate SMBIOS data as described above will be available in Windows 2000 Beta 3.</p><p class="MsoNormal"> </p><div style="mso-border-top-alt: solid windowtext .5pt; border-left: medium none; border-right: medium none; border-top: 1.0pt solid windowtext; border-bottom: medium none; padding-left: 0in; padding-right: 0in; padding-top: 1.0pt; padding-bottom: 0in"> <h1><a name="_Toc409597063">ACPI Control Method Naming Conventions and Functionality</a> for Windows 2000 Instrumentation</h1></div><p class="MsoNormal">The <a name="_Toc409597064">Data Block GUID Mapping control method</a> named _WDG evaluates to a buffer that has the GUID mapping information for data blocks, events, and WMI methods. The result of the evaluation is a buffer containing an array of the following structure. </p><p class="MsoNormal"> </p><p class="Ex" style="page-break-after: avoid">typedef struct</p><p class="Ex" style="page-break-after: avoid">{</p><p class="Ex" style="page-break-after: avoid"> GUID guid; // GUID that names data block</p><p class="Ex" style="page-break-after: avoid"> union</p><p class="Ex" style="page-break-after: avoid"> {</p><p class="Ex" style="page-break-after: avoid"> CHAR ObjectId[2]; // 2-character ACPI ID (Data Blocks and Methods)</p><p class="Ex" style="page-break-after: avoid"> struct </p><p class="Ex" style="page-break-after: avoid"> {</p><p class="Ex" style="page-break-after: avoid; margin-right: -42.0pt"> UCHAR NotificationValue; // Byte value passed by event handler control method</p><p class="Ex" style="page-break-after: avoid"> UCHAR Reserved[1];</p><p class="Ex" style="page-break-after: avoid"> } NotifyId;</p><p class="Ex" style="page-break-after: avoid"> }</p><p class="Ex" style="page-break-after: avoid"> USHORT InstanceCount; // Number of separate instances of data block</p><p class="Ex" style="page-break-after: avoid"> USHORT Flags; // Flags</p><p class="Ex">};</p><p class="Ex"> </p><p class="Ex">// Set this flag if the WCxx control method should be run to whenever the first </p><p class="Ex">// data consumer is interested in collecting the data block and whenever the last data </p><p class="Ex">// consumer is no longer interested.</p><p class="Ex"> </p><p class="Ex">#define WMIACPI_REGFLAG_EXPENSIVE 0x1</p><p class="Ex"> </p><p class="Ex">// Set this flag if the GUID represents a set of WMI method calls and not a data block</p><p class="Ex"> </p><p class="Ex">#define WMIACPI_REGFLAG_METHOD 0x2</p><p class="Ex"> </p><p class="Ex">// Set this flag if the data block is wholly composed of a string and should be </p><p class="Ex">// translated from ASCIZ to UNICODE in returning queries and from UNICODE to ASCIZ </p><p class="Ex">// when passing sets</p><p class="Ex"> </p><p class="Ex">#define WMIACPI_REGFLAG_STRING 0x04</p><p class="Ex"> </p><p class="Ex">// Set this flag if the guid maps to an event rather than a data block or method</p><p class="Ex"> </p><p class="Ex">#define WMIACPI_REGFLAG_EVENT 0x08</p><p class="Ex"> </p><p class="Le"> </p><p class="MsoNormal">Each element in the array describes the mapping of a WMI data block GUID to a 2-letter ACPI method identifier used to compose the method names that operate on the data block or on the notification value used in the ASL <b>Notify</b> operation. Each element of the array also contains the number of instances of the data block that exist and any flags that are set.</p><p class="MsoNormal"> </p><p class="MsoNormal">This control method is required.</p><p class="MsoNormal"> </p><p class="MsoNormal"><a name="_Toc409597067">The following table summarizes the information for each control method described later in this section.</a></p><p class="MsoNormal"> </p><p class="Tt">Control Method Summary</p><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" style="border-collapse: collapse"> <tr> <td width="120" valign="top" style="width: 1.25in; border-left: medium none; border-right: medium none; border-top: 1.0pt solid windowtext; border-bottom: 1.0pt solid windowtext; padding: 0in; background: #CCCCCC"> <p class="Thf">Control method</td> <td width="96" valign="top" style="width: 1.0in; border-left: medium none; border-right: medium none; border-top: 1.0pt solid windowtext; border-bottom: 1.0pt solid windowtext; padding: 0in; background: #CCCCCC"> <p class="Th">Object name</td> <td width="103" valign="top" style="width: 77.4pt; border-left: medium none; border-right: medium none; border-top: 1.0pt solid windowtext; border-bottom: 1.0pt solid windowtext; padding: 0in; background: #CCCCCC"> <p class="Th">Parameters</td> <td width="281" valign="top" style="width: 210.6pt; border-left: medium none; border-right: medium none; border-top: 1.0pt solid windowtext; border-bottom: 1.0pt solid windowtext; padding: 0in; background: #CCCCCC"> <p class="Th">Control method required</td> </tr> <tr> <td width="120" valign="top" style="width: 1.25in; padding: 0in"> <p class="Tpf">Data Block Query</td> <td width="96" valign="top" style="width: 1.0in; padding: 0in"> <p class="Th"><span style="font-weight: normal">WQ<i>xx</i></span></td> <td width="103" valign="top" style="width: 77.4pt; padding: 0in"> <p class="Th"><span style="font-weight: normal">ULONG</span></td> <td width="281" valign="top" style="width: 210.6pt; padding: 0in"> <p class="Th"><span style="font-weight: normal">Yes.</span></td> </tr> <tr> <td width="120" valign="top" style="width: 1.25in; padding: 0in"> <p class="Tpf">Data Block Set</td> <td width="96" valign="top" style="width: 1.0in; padding: 0in"> <p class="Tp">WS<i>xx</i></td> <td width="103" valign="top" style="width: 77.4pt; padding: 0in"> <p class="Tp">ULONG, buffer</td> <td width="281" valign="top" style="width: 210.6pt; padding: 0in"> <p class="Tp">No. Not required for data blocks that are read only.</td> </tr> <tr> <td width="120" valign="top" style="width: 1.25in; padding: 0in"> <p class="Tpf">Data Item Set</td> <td width="96" valign="top" style="width: 1.0in; padding: 0in"> <p class="Tp">Not supported</td> <td width="103" valign="top" style="width: 77.4pt; padding: 0in"> <p class="Tp"> </td> <td width="281" valign="top" style="width: 210.6pt; padding: 0in"> <p class="Tp"> </td> </tr> <tr> <td width="120" valign="top" style="width: 1.25in; padding: 0in"> <p class="Tpf">Method Execution</td> <td width="96" valign="top" style="width: 1.0in; padding: 0in"> <p class="Tp">WM<i>xx</i></td> <td width="103" valign="top" style="width: 77.4pt; padding: 0in"> <p class="Tp">ULONG, method ID, <br> buffer</td> <td width="281" valign="top" style="width: 210.6pt; padding: 0in"> <p class="Tp">Yes. Required for data blocks specified in the data block GUID mapping array and that have the WMIACPI_REG_METHOD flag set.</td> </tr></table><p class="MsoNormal"> </p><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" style="border-collapse: collapse"> <tr> <td width="120" valign="top" style="width: 1.25in; padding: 0in"> <p class="Tpf">Event Enable and Disable</td> <td width="96" valign="top" style="width: 1.0in; padding: 0in"> <p class="Tp">WE<i>xx</i></td> <td width="103" valign="top" style="width: 77.4pt; padding: 0in"> <p class="Tp">UCHAR</td> <td width="281" valign="top" style="width: 210.6pt; padding: 0in"> <p class="Tp">No. Support only when keeping the event enabled incurs significant overhead.</td> </tr> <tr> <td width="120" valign="top" style="width: 1.25in; border-left: medium none; border-right: medium none; border-top: medium none; border-bottom: 1.0pt solid windowtext; padding: 0in"> <p class="Tpf">Data Collection <br> Enable and Disable</td> <td width="96" valign="top" style="width: 1.0in; border-left: medium none; border-right: medium none; border-top: medium none; border-bottom: 1.0pt solid windowtext; padding: 0in"> <p class="Tp">WC<i>xx</i></td> <td width="103" valign="top" style="width: 77.4pt; border-left: medium none; border-right: medium none; border-top: medium none; border-bottom: 1.0pt solid windowtext; padding: 0in"> <p class="Tp">UCHAR</td> <td width="281" valign="top" style="width: 210.6pt; border-left: medium none; border-right: medium none; border-top: medium none; border-bottom: 1.0pt solid windowtext; padding: 0in"> <p class="Tp">No. Support only when data collecting for the data block incurs significant overhead.</td> </tr></table><p class="Le"> </p><p class="MsoListBullet"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span><b>Data Block Query Control Method. </b>If the Data Block GUID Mapping control method describes a data block that does not have the WMIACPI_REG_METHOD flag set, there needs to be a control method that evaluates to the contents of an instance of the data block. </p><p class="Lp1">By convention, the name of the object is WQ<i>xx</i>, where <i>xx</i> is the 2-character ID that maps to the GUID being queried. One parameter is passed to the method�the index of the instance, which is of type ULONG. Data blocks registered with only a single instance can ignore the parameter. If the result of the evaluation of the WQ<i>xx</i> method is a string, then the mapper will convert that string to UNICODE so that it can be understood by WMI. </p><p class="Lp1">This control method is required.</p><p class="MsoListBullet"><a name="_Toc409597068"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span><b>Data Block Set Control Method</b></a><b>. </b>If the Data Block GUID Mapping control method describes a data block that does not have the WMIACPI_REG_METHOD flag set, there needs to be a control method that evaluates to the contents of an instance of the data block. </p><p class="Lp1">By convention, the name of the object is WS<i>xx</i>, where <i>xx</i> is the 2-character ID that maps to the GUID being set. Two parameters are passed to the method; one is a ULONG that is the index of the instance, and the other is a buffer that contains the new values for the data block. </p><p class="Lp1">If the GUID for the data block is registered with the WMIACPI_REGFLAG_STRING flag, then the mapper assumes that the data block passed is wholly composed of a single string and will convert that string from UNICODE to ASCIZ so that it can be understood by the WS<i>xx</i> control method. </p><p class="Lp1">This control method is not required for those data blocks that are read only. </p><p class="Lp1">Because the mapper is unaware of the format of the data block passed by the caller of the WMI method, it will pass the buffer as a single buffer parameter to the WM<i>xx</i> control method. The control method can use the ASL instructions <b>CreateBitField</b>, <b>CreateDWordField</b>, <b>CreateField</b>, and <b>CreateWordField</b> to break up the buffer into its parts</p><p class="MsoListBullet"><a name="_Toc409597069"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span><b>Data Item Set Control Method</b></a><b>. </b>Setting of individual data items within a data block is not supported. Typically, data items that can be modified should be placed in their own data block or the entire data block should be modified.</p><p class="MsoListBullet"><a name="_Toc409597070"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span><b>Method Execution Control Method</b></a><b>. </b>If the Data Block GUID Mapping control method describes a data block that does have the WMIACPI_REG_METHOD flag set, there needs to be a control method that performs the action required of the method. </p><p class="Lp1">By convention, the name of the control method is WM<i>xx</i>, where <i>xx</i> is the 2-character ID that maps to the GUID. This method call has three parameters; the first is a ULONG that has the instance index being executed; the second contains the method ID for the method being executed; and the third is a buffer that contains the input for the method call. </p><p class="Lp1">If the GUID for the WMI method is registered with the WMIACPI_REGFLAG_STRING flag, then the mapper assumes that buffer passed in is a string. The mapper will convert the incoming string from UNICODE to ASCIZ. </p><p class="Lp1">If the result of the WM<i>xx</i> control method is a string, the mapper will convert the result string from ASCIZ to UNICODE. The return value of the WM<i>xx</i> method should be a buffer with the result of the method call.</p><p class="Lp1">This control method is<b> </b>required for those data blocks specified in the Data Block GUID Mapping array that have the WMIACPI_REG_METHOD flag set. </p><p class="Lp1">Because the mapper is unaware of the format of the data block passed by the caller of the WMI method, it will pass the buffer as a single buffer parameter to the WM<i>xx</i> control method. The control method can use the ASL instructions <b>CreateBitField</b>, <b>CreateDWordField</b>, <b>CreateField</b>, and <b>CreateWordField</b> to break the buffer into its parts.</p><p class="MsoListBullet"><a name="_Toc409597071"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span><b>Event Enable and Disable Control Method</b></a><b>. </b>For each event specified in the Event GUID Mapping control method that has the WMIACPI_REG_EXPENSIVE flag set, there needs to be a control method that is invoked whenever launching of the event should be enabled and disabled. </p><p class="Lp1">By convention, the control method is named WE<i>xx</i>, where <i>xx</i> is the hex value of the notification code passed by the event handler control method. This method has one parameter, a UCHAR that has a value of 0 if the event is to be disabled or a nonzero value if it is to be enabled. </p><p class="Lp1">This method is optional and should only be supported if keeping the event enabled incurs significant overhead.</p><p class="MsoListBullet"><a name="_Toc409597072"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span><b>Data Collection Enable and Disabl</b></a><b>e Control Method.</b>For each data block described in the Data Block GUID Mapping control method that has the WMIACPI_REG_EXPENSIVE flag set, there needs to be a control method that is invoked whenever collection of the data that composes the data block should be enabled and disabled </p><p class="Lp1">By convention, the control method is named WC<i>xx</i>, where <i>xx</i> is the 2-character ID that maps to the GUID. This method has one parameter, a UCHAR that has a value of 0 if data block collection is to be disabled or a nonzero value if it is to be enabled. </p><p class="Lp1">This method is optional and should only be supported if collecting the data for the data block incurs significant overhead.</p><p class="MsoListBullet"><a name="_Toc409597073"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span><b>Additional Event Data</b></a><b>. </b>The _WED control method is evaluated by the mapper in response to receiving a notification from a control method. The results of the evaluation are passed as part of the WMI event information. This mechanism allows additional data to be included with an event. </p><p class="Lp1">The control method takes one parameter, which is the notification code that caused the notification to occur. If the result of the _WED control method is a string, then the string is converted from ASCIZ to UNICODE before launching the WMI event.</p><p class="Le"> </p><div style="mso-border-top-alt: solid windowtext .5pt; border-left: medium none; border-right: medium none; border-top: 1.0pt solid windowtext; border-bottom: medium none; padding-left: 0in; padding-right: 0in; padding-top: 1.0pt; padding-bottom: 0in"> <h1><a name="_Toc409597075">Data Block Design </a>for Windows 2000 Instrumentation </h1></div><p class="MsoNormal"><b>Design Considerations. </b>Consider the following in designing data blocks for instrumentation under Windows 2000:</p><p class="MsoListBullet"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span>Data items that are read-only and are commonly used together should be combined into a single data block.</p><p class="MsoListBullet"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span>Data items that are strings must be segregated into their own data block and registered with the WMIACPI_REGFLAG_STRING flag set so that the mapper can convert between ASCIZ and UNICODE.</p><p class="MsoListBullet"><span style="font-family: Symbol">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span>Data items that can be set individually should be segregated into their own data blocks. For example, a set of data items that must be set all at the same time can be combined into a single data block.</p><p class="Le"> </p><p class="MsoNormal"><a name="_Toc409597076"><b>MOF</b></a><b> Data Types. </b>The Managed Object Format (MOF) for the data blocks implemented can be supplied as either a resource attached to a file or as the buffer that results from the evaluation of a control method. To establish the former, either bind the resource to the Wmiacpi.sys image or establish a REG_EXPAND_SZ registry value named <b>MofImagePath</b> under the WMIACPI service key. The contents of the value is a path to the image file that contains the resource. In either case, the resource must be named <b>MofResourceName</b>.</p><p class="MsoNormal"> </p><p class="MsoNormal">The buffer resulting from the evaluation of the WQ<i>xx</i> control method assigned to the binary MOF GUID describes all data blocks, WMI methods, and events for the device in a compressed binary format. This binary data is created by building a text file using the MOF language and compiling it with the MOF compiler.</p><p class="MsoNormal"> </p><p class="MsoNormal">MOF data types are very rich. MOF supports the basic data types of 8-, 16-, 32-, and 64-bit signed and unsigned integers, Boolean terms, floating points, strings, and UTC datetimes. Embedded classes�that is, structures that can contain basic data types and other embedded classes�are also supported. In addition, fixed and variable length arrays of basic data types and embedded classes are supported. </p><p class="MsoNormal"> </p><p class="MsoNormal">The MOF language defines the data types shown in the following table.</p><p class="MsoNormal"> </p><p class="Tt">MOF Data Types</p><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" style="border-collapse: collapse"> <tr> <td width="200" valign="top" style="width: 150.0pt; border-left: medium none; border-right: medium none; border-top: 1.0pt solid windowtext; border-bottom: 1.0pt solid windowtext; padding: 0in; background: #CCCCCC"> <p class="Thf">Data types</td> <td width="407" valign="top" style="width: 305.4pt; border-left: medium none; border-right: medium none; border-top: 1.0pt solid windowtext; border-bottom: 1.0pt solid windowtext; padding: 0in; background: #CCCCCC"> <p class="Thf">Data format</td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; padding: 0in"> <p class="Tpf">String</td> <td width="407" valign="top" style="width: 305.4pt; padding: 0in"> <p class="Tpf">Null terminated ANSI string</td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; padding: 0in"> <p class="Tpf">sint32</td> <td width="407" valign="top" style="width: 305.4pt; padding: 0in"> <p class="Tpf">Signed 32-bit integer </td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; padding: 0in"> <p class="Tpf">uint32</td> <td width="407" valign="top" style="width: 305.4pt; padding: 0in"> <p class="Tpf">Unsigned 32-bit integer</td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; padding: 0in"> <p class="Tpf">sint16 </td> <td width="407" valign="top" style="width: 305.4pt; padding: 0in"> <p class="Tpf">Signed 16-bit integer </td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; padding: 0in"> <p class="Tpf">uint16 </td> <td width="407" valign="top" style="width: 305.4pt; padding: 0in"> <p class="Tpf">Unsigned 16-bit integer </td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; padding: 0in"> <p class="Tpf">sint64</td> <td width="407" valign="top" style="width: 305.4pt; padding: 0in"> <p class="Tpf">Signed 64-bit integer</td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; padding: 0in"> <p class="Tpf">uint64</td> <td width="407" valign="top" style="width: 305.4pt; padding: 0in"> <p class="Tpf">Unsigned 64-bit integer</td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; padding: 0in"> <p class="Tpf">sint8</td> <td width="407" valign="top" style="width: 305.4pt; padding: 0in"> <p class="Tpf">Signed 8-bit character </td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; padding: 0in"> <p class="Tpf">uint8</td> <td width="407" valign="top" style="width: 305.4pt; padding: 0in"> <p class="Tpf">Unsigned 8-bit integer</td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; padding: 0in"> <p class="Tpf">Datetime</td> <td width="407" valign="top" style="width: 305.4pt; padding: 0in"> <p class="Tpf">25-character string used to specify absolute dates or time intervals. </td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; border-left: medium none; border-right: medium none; border-top: medium none; border-bottom: 1.0pt solid windowtext; padding: 0in"> <p class="Tpf">Boolean</td> <td width="407" valign="top" style="width: 305.4pt; border-left: medium none; border-right: medium none; border-top: medium none; border-bottom: 1.0pt solid windowtext; padding: 0in"> <p class="Tpf">Byte where 0 is FALSE, != 0 is TRUE </td> </tr></table><p class="Le"> </p><p class="MsoNormal"><b>Important: </b>Because the MOF data types are much richer than those for ACPI control methods, the control method must be careful to pack the data blocks correctly within an ACPI buffer. The control method can also restrict itself to using only common data types.</p><p class="MsoNormal"> </p><p class="MsoNormal">Each MOF class represents a data block and may contain one or more properties that represent data items within the data block. A MOF class would hold all information needed to parse a data block returned from the mapper. In addition, the MOF language allows rich meta-data to be included as qualifiers on properties and classes. Some qualifiers are required, but most are optional.</p><p class="MsoNormal"> </p><p class="MsoNormal">Class and data item qualifiers are defined in the following table.</p><p class="MsoNormal"> </p><p class="Tt">Class and Data Item Qualifiers</p><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" style="border-collapse: collapse"> <tr> <td width="200" valign="top" style="width: 150.0pt; border-left: medium none; border-right: medium none; border-top: 1.0pt solid windowtext; border-bottom: 1.0pt solid windowtext; padding: 0in; background: #CCCCCC"> <p class="Thf">Qualifier</td> <td width="400" valign="top" style="width: 300.0pt; border-left: medium none; border-right: medium none; border-top: 1.0pt solid windowtext; border-bottom: 1.0pt solid windowtext; padding: 0in; background: #CCCCCC"> <p class="Thf">Description</td> <td style="border: medium none; padding: 0in" width="7"> <p class="MsoNormal"> </td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; border-left: medium none; border-right: medium none; border-top: medium none; border-bottom: 1.0pt solid windowtext; padding: 0in; background: #CCCCCC"> <p class="Thf">Class qualifiers:</td> <td width="400" valign="top" style="width: 300.0pt; border-left: medium none; border-right: medium none; border-top: medium none; border-bottom: 1.0pt solid windowtext; padding: 0in; background: #CCCCCC"> <p class="Thf"><span style="font-size: 10.5pt"> </span></td> <td style="border: medium none; padding: 0in" width="7"> <p class="MsoNormal"> </td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; padding: 0in"> <p class="Tpf">[guid(�<i>guid-string</i>�)] </td> <td width="400" valign="top" style="width: 300.0pt; padding: 0in"> <p class="Tpf">Declares the GUID that represents the class within WMI. This qualifier is required.</td> <td style="border: medium none; padding: 0in" width="7"> <p class="MsoNormal"> </td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; padding: 0in"> <p class="Tpf">[Dynamic] </td> <td width="400" valign="top" style="width: 300.0pt; padding: 0in"> <p class="Tpf">Required for WBEM.</td> <td style="border: medium none; padding: 0in" width="7"> <p class="MsoNormal"> </td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; padding: 0in"> <p class="Tpf">[WMI] </td> <td width="400" valign="top" style="width: 300.0pt; padding: 0in"> <p class="Tpf">Required for WBEM.</td> <td style="border: medium none; padding: 0in" width="7"> <p class="MsoNormal"> </td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; padding: 0in"> <p class="Tpf">[Provider(�WmiProv�)] </td> <td width="400" valign="top" style="width: 300.0pt; padding: 0in"> <p class="Tpf">Required for WBEM.</td> <td style="border: medium none; padding: 0in" width="7"> <p class="MsoNormal"> </td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; padding: 0in"> <p class="Tpf">[Description(<i>�description-text�)</i>]<i> </i></td> <td width="400" valign="top" style="width: 300.0pt; padding: 0in"> <p class="Tpf">Specifies description text for the class or property in the locale specified for the locale qualifier.</td> <td style="border: medium none; padding: 0in" width="7"> <p class="MsoNormal"> </td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; padding: 0in"> <p class="Tpf">[WmiExpense(<i>expense-value</i>)] </td> <td width="400" valign="top" style="width: 300.0pt; padding: 0in"> <p class="Tpf">Specifies the quantity of system resources required in order to collect data in the data block; <i>expense-value</i> is defined to be the average number of CPU cycles needed to collect the data block. If this qualifier is not specified, then the <i>expense-value</i> is assumed to be 0.</td> <td style="border-left: medium none; border-right: medium none; border-top: medium none; border-bottom: 1.0pt solid windowtext" width="7"> <p class="MsoNormal"> </td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; border-left: medium none; border-right: medium none; border-top: 1.0pt solid windowtext; border-bottom: 1.0pt solid windowtext; padding: 0in; background: #CCCCCC"> <p class="Thf">Data item qualifiers:</td> <td width="407" colspan="2" valign="top" style="width: 305.4pt; border-left: medium none; border-right: medium none; border-top: 1.0pt solid windowtext; border-bottom: 1.0pt solid windowtext; padding: 0in; background: #CCCCCC"> <p class="Thf"><span style="font-size: 10.5pt"> </span></td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; padding: 0in"> <p class="Tpf">[read] </td> <td width="407" colspan="2" valign="top" style="width: 305.4pt; padding: 0in"> <p class="Tpf">Specifies that the data item may be read.</td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; padding: 0in"> <p class="Tpf">[write] </td> <td width="407" colspan="2" valign="top" style="width: 305.4pt; padding: 0in"> <p class="Tpf">Specifies that the data item may be written.</td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; padding: 0in"> <p class="Tpf">[WmiDataID(<i>data-item-ID</i>)] </td> <td width="407" colspan="2" valign="top" style="width: 305.4pt; padding: 0in"> <p class="Tpf">Specifies the data item ID for the data item. This qualifier is required.</td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; padding: 0in"> <p class="Tpf"><span style="layout-grid-mode: line">[WmiScale(<i>scale-factor</i>)] </span></td> <td width="407" colspan="2" valign="top" style="width: 305.4pt; padding: 0in"> <p class="Tpf"><span style="layout-grid-mode: line">Specifies the scaling factor to use when displaying the data. Before displaying the data returned from a query of the data item, it is multiplied by 10 to the power of <i> scale-factor</i>. If this qualifier is not specified, then the <i> scale-factor</i> is assumed to be 0.</span></td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; padding: 0in"> <p class="Tpf">[WmiComplexity(�<i>complexity-category�</i>)] </td> <td width="407" colspan="2" valign="top" style="width: 305.4pt; padding: 0in"> <p class="Tpf">Specifies the level of detail associated with the counter. <i> Complexity-category</i> can have the value of �Novice� for the information that anyone can understand, �Advanced� for information that is useful for advanced users, �Expert� for information that is useful to only expert users, and �Wizard� for information that is useful for the data provider designer. If this qualifier is not specified, then a <i>complexity-category</i> of �Novice� is assumed.</td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; padding: 0in"> <p class="Tpf">[WmiVolatility(<i>validity-interval</i>)] </td> <td width="407" colspan="2" valign="top" style="width: 305.4pt; padding: 0in"> <p class="Tpf">Specifies how often this data item value is updated internally. <i>Validity-interval</i> is defined in units of milliseconds, so a <i>validity-interval</i> of 1000 would mean that the data item is updated internally every second. Data consumers can use this measure to determine how frequently it should poll for changes in a data item. If this qualifier is not specified, then no assumption on the length of validity for a data item can be made.</td> </tr> <tr> <td width="200" valign="top" style="width: 150.0pt; border-left: medium none; border-right: medium none; border-top: medium none; border-bottom: 1.0pt solid windowtext; padding: 0in"> <p class="Tpf">[WmiSizeIs(�<i>property-name</i>�)] </td> <td width="407" colspan="2" valign="top" style="width: 305.4pt; border-left: medium none; border-right: medium none; border-top: medium none; border-bottom: 1.0pt solid windowtext; padding: 0in"> <p class="Tpf">Specifies the property within the current class that has the count of the number of array elements (not bytes) contained in a variable length array.</td> </tr></table><p class="Le"> </p><p class="MsoNormal" style="margin-right: -24.0pt">The order that the data items are laid out in the data block is controlled by the data item ID. Data item IDs must be allocated contiguously starting with data item ID 1. The data item order specified in the MOF is not relevant. </p><p class="MsoNormal" style="margin-right: -24.0pt"> </p><p class="MsoNormal" style="margin-right: -24.0pt">MOF supports arrays of the basic types shown in the �MOF Data Types� table shown earlier. A variable sized array must have a <b>WmiSizeIs()</b> qualifier that specifies the property that has the number of elements in the array. </p><p class="MsoNormal"> </p><p class="MsoNormal"><a name="_Toc409597077"><b>Data Block Format</b></a><b>.</b>The format of the data block buffer returned from the query control method and passed into the set control method must be consistent with the description of it specified by the MOF for that data block with respect to the order and size of the data items within the data block<span style="layout-grid-mode: line">.</span> The Boolean data type is 1 byte in length and has a value of 0 for FALSE and non-zero value for TRUE. The string data type is a C-style ANSI null-terminated string.</p><p class="MsoNormal"> </p><p class="MsoNormal"><a name="_Toc409597078"><b>Standard Data Blocks, Methods, and Events</b></a><b>. </b>Additional data blocks, events, and methods will be defined in the future; they should be implemented by all OEMs in order to ensure a minimum of functionality on all PCs. In the future, an industry standard will be defined for the globally unique GUIDs to be assigned to the data blocks. The WMI component within Windows will contain the MOF definition for these standard data blocks so it does not need to be part of the result from the binary .mof query.</p><p class="MsoNormal"> </p><p class="MsoNormal"><a name="_Toc440694672"><b>Custom Data Blocks, Methods and Events</b></a><b>. </b>Custom or OEM-specific data blocks, events, and methods can be added by including them in the result of the _WDG method. The GUIDs that are assigned must be globally unique so they can be generated by a tool such as Guidgen or Uuidgen, which are provided with the WMI information in the Microsoft Platform SDK.</p><p class="MsoNormal"> </p><p class="MsoNormal">The MOF definition for these custom data blocks must be included in the results of the WQ<i>xx</i> method, where <i>xx</i> has been mapped to the MOF Data GUID, which is the GUID that is queried and returns MOF data�in order for applications to be able to access the data blocks. Or the MOF could be added as a resource to Wmiacpi.sys with a name of <b>MofResourceName</b> and a type MOFDATA. It can also be a resource in another image file with same name and type that is pointed to by the <b>MofImagePath </b>value in the registry key HKLM\CurrentControlSet\Services\WmiAcpi</p><p class="MsoNormal"> </p><div style="mso-border-top-alt: solid windowtext .5pt; border-left: medium none; border-right: medium none; border-top: 1.0pt solid windowtext; border-bottom: medium none; padding-left: 0in; padding-right: 0in; padding-top: 1.0pt; padding-bottom: 0in"> <h1><a name="_Toc440694673">FAQ about WMI and ACPI</a> for Windows 2000 Instrumentation</h1></div><p class="Term1">How does WMI find ACPI/ASL code?</p><p class="Def1"><span style="layout-grid-mode: line">In ASL, the developer creates a device with an _HID of </span>PNP0c14<span style="layout-grid-mode: line">. The operating system enumerates the device and loads the Wmiacpi.sys driver on top of it.</span></p><p class="Term1"><span style="layout-grid-mode: line">How does the MOF associated with ACPI BIOS get registered?</span></p><p class="Def1"><span style="layout-grid-mode: line">It is either a resource attached to Wmiacpi.sys or another image file such as a resource-only DLL.</span></p><p class="Term1"><span style="layout-grid-mode: line">How does a management application discover the classes and properties provided by ASL instrumentation?</span></p><p class="Def1"><span style="layout-grid-mode: line">By looking in the WMI namespace of the schema.</span></p><p class="Term1"><span style="layout-grid-mode: line">Is the following true? Because very few ACPI standards exist for instrumentation, most of the ACPI instrumented features will appear differently on each vendor�s product, and management applications will have to be �taught� to interpret the varying classes and methods.</span></p><p class="Def1"><span style="layout-grid-mode: line">Microsoft is looking at standardizing this. Any suggestions are appreciated.</span></p><p class="Term1"><span style="layout-grid-mode: line">Who provides the .mof files for standard ACPI features such as thermal monitoring?</span></p><p class="Def1"><span style="layout-grid-mode: line">Windows 2000 has a .mof file for thermal zone temperature as part of the operating system and instruments it within Acpi.sys, outside of the mapper.</span></p><p class="Def1"><span style="layout-grid-mode: line">Typically, .mof files are compiled into .bmf files and attached to a driver as a resource. The .bmf files can be in the ROM or on disk. WMI determines the location of the .mof information by looking at the registry for the <b>MofImagePath</b> value under the WMIACPI service. If this does not exist, then WMI looks at the <b>ImagePath</b> value. If Wmiacpi.sys does not have a .mof resource, then WMI will query the binary .mof GUID for the .mof information.</span></p><p class="Def1"><span style="layout-grid-mode: line">A driver may have a static list of pre-built .mof files; if so, it can �dynamically� report one of them. The mechanism is to report the file using a predefined GUID that returns a binary .mof.</span></p><p class="Def1"><span style="layout-grid-mode: line">To dynamically build a .mof file, a driver would have to build a .mof file and then launch the .mof compiler, which is difficult. Currently, to do this on the machine running Wmiacpi.sys, the <b>mofcomp</b> command can be used to load the .mof file directly into the CIMOM database. </span></p><div style="mso-border-top-alt: solid windowtext .5pt; border-left: medium none; border-right: medium none; border-top: 1.0pt solid windowtext; border-bottom: medium none; padding-left: 0in; padding-right: 0in; padding-top: 1.0pt; padding-bottom: 0in"> <h1><a name="_Toc440694675"><span style="layout-grid-mode: line">ASL Methods and Sample Code</span></a></h1></div><p class="MsoNormal"><span style="layout-grid-mode: line">The following list represents some of the ASL methods defined by the ACPI specification. These methods are of particular interest for systems management. None of these methods have been implemented yet within the WMI/ACPI mapper to date. </span>A BIOS developer, for example, could use these methods to expose data using the mapper.<span style="layout-grid-mode: line">These methods represent good opportunities for OEMs to differentiate their products with minimal effort:</span></p><p class="MsoListBullet"><span style="font-family: Symbol; layout-grid-mode: line">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span><span style="layout-grid-mode: line">_ACX � Temperature threshold at which various degrees of active cooling are engaged</span></p><p class="MsoListBullet"><span style="font-family: Symbol; layout-grid-mode: line">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span><span style="layout-grid-mode: line">_CRT � Critical temperature at which system will shut down</span></p><p class="MsoListBullet"><span style="font-family: Symbol; layout-grid-mode: line">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span><span style="layout-grid-mode: line">_PSV � Temperature at which system will throttle CPU in order to cool system</span></p><p class="MsoListBullet"><span style="font-family: Symbol; layout-grid-mode: line">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span><span style="layout-grid-mode: line">_LID � Status of the lid (open or closed)</span></p><p class="MsoListBullet"><span style="font-family: Symbol; layout-grid-mode: line">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span><span style="layout-grid-mode: line">_PSR� Whether the machine running on AC </span></p><p class="Le"><span style="layout-grid-mode: line"> </span></p><p class="MsoNormal"><span style="layout-grid-mode: line">The same applies for these method for Control Method Battery devices:</span></p><p class="MsoListBullet"><span style="font-family: Symbol; layout-grid-mode: line">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span><span style="layout-grid-mode: line">_BIF � Battery information such as model, serial number, design capacity, last full charge capacity, technology, and battery capacity</span></p><p class="MsoListBullet"><span style="font-family: Symbol; layout-grid-mode: line">�<span style="font-style: normal; font-variant: normal; font-weight: normal; font-size: 7.0pt; font-family: Times New Roman"> </span></span><span style="layout-grid-mode: line">_BST � Battery state, battery present rate, battery remaining capacity, and battery voltage present</span></p><p class="Le"> </p><h2><a name="_Toc445868973"><span style="layout-grid-mode: line">ASL Sample Code for an Event and Initiating Method</span></a></h2><p class="MsoNormal"><span style="layout-grid-mode: line">The following ASL code implements an event and a method that can be called to initiate that event.</span></p><p class="Ex">Device(AMW0)</p><p class="Ex">{</p><p class="Ex"> // pnp0c14 is Plug and Play ID assigned to WMI mapper</p><p class="Ex"> Name(_HID, "*pnp0c14")</p><p class="Ex"> Name(_UID, 0x0)</p><p class="Ex"> </p><p class="Ex"> //</p><p class="Ex"> // Description of data and events supported</p><p class="Ex"> Name(_WDG, Buffer() {</p><p class="Ex" style="margin-right: -.75in"> 0x6a, 0x0f, 0xBC, 0xAB, 0xa1, 0x8e, 0xd1, 0x11, 0x00, 0xa0, 0xc9, 0x06, 0x29, 0x10, 0, 0,</p><p class="Ex"> 66, 65, // Object ID (BA)</p><p class="Ex"> 3, // Instance Count</p><p class="Ex"> 0x01, // Flags (WMIACPI_REGFLAG_EXPENSIVE)</p><p class="Ex"> </p><p class="Ex" style="margin-right: -.75in"> 0x6b, 0x0f, 0xBC, 0xAB, 0xa1, 0x8e, 0xd1, 0x11, 0x00, 0xa0, 0xc9, 0x06, 0x29, 0x10, 0, 0,</p><p class="Ex"> 66, 66, // Object ID (BB)</p><p class="Ex"> 3, // Instance Count</p><p class="Ex"> 0x02, // Flags (WMIACPI_REGFLAG_METHOD)</p><p class="Ex"> </p><p class="Ex" style="margin-right: -1.0in"> 0x6c, 0x0f, 0xBC, 0xAB, 0xa1, 0x8e, 0xd1, 0x11, 0x00, 0xa0, 0xc9, 0x06, 0x29, 0x10, 0, 0,</p><p class="Ex"> 0xb0, 0, // Notification ID</p><p class="Ex"> 1, // Instance Count</p><p class="Ex"> 0x08 // Flags (WMIACPI_REGFLAG_EVENT)</p><p class="Ex"> })</p><p class="Ex"> </p><p class="Ex"> //</p><p class="Ex"> // Storage for the 3 instances of BA</p><p class="Ex"> Name(STB0, Buffer(0x10) { </p><p class="Ex"> 1,0,0,0, 2,0,0,0, 3,0,0,0, 4,0,0,0</p><p class="Ex"> })</p><p class="Ex"> Name(STB1, Buffer(0x10) {</p><p class="Ex"> 0,1,0,0, 0,2,0,0, 0,3,0,0, 0,4,0,0</p><p class="Ex"> })</p><p class="Ex"> Name(STB2, Buffer(0x10) {</p><p class="Ex"> 0,0,1,0, 0,0,2,0, 0,0,3,0, 0,0,4,0</p><p class="Ex"> })</p><p class="Ex"> </p><p class="Ex"> //</p><p class="Ex"> // Query data block</p><p class="Ex"> // Arg0 has the instance being queried</p><p class="Ex"> Method(WQBA, 1) {</p><p class="Ex"> if (LEqual(Arg0, 0)) {</p><p class="Ex"> Return(STB0)</p><p class="Ex"> }</p><p class="Ex"> if (LEqual(Arg0, 1)) {</p><p class="Ex"> Return(STB1)</p><p class="Ex"> }</p><p class="Ex"> if (LEqual(Arg0, 2)) {</p><p class="Ex"> Return(STB2)</p><p class="Ex"> }</p><p class="Ex"> }</p><p class="Ex"> </p><p class="Ex" style="page-break-after: avoid"> //</p><p class="Ex" style="page-break-after: avoid"> // Set Data Block</p><p class="Ex" style="page-break-after: avoid"> // Arg0 has the instance being queried</p><p class="Ex" style="page-break-after: avoid"> // Arg1 has the new value for the data block instance</p><p class="Ex" style="page-break-after: avoid"> Method(WSBA, 2) {</p><p class="Ex" style="page-break-after: avoid"> if (LEqual(Arg0, 0)) {</p><p class="Ex" style="page-break-after: avoid"> Store(Arg1, STB0)</p><p class="Ex" style="page-break-after: avoid"> }</p><p class="Ex" style="page-break-after: avoid"> if (LEqual(Arg0, 1)) {</p><p class="Ex" style="page-break-after: avoid"> Store(Arg1, STB1)</p><p class="Ex" style="page-break-after: avoid"> }</p><p class="Ex"> if (LEqual(Arg0, 2)) {</p><p class="Ex"> Store(Arg1, STB2)</p><p class="Ex"> }</p><p class="Ex"> }</p><p class="Ex"> </p><p class="Ex"> //</p><p class="Ex"> // Storage for data block BB</p><p class="Ex"> Name(B0ED, Buffer(0x10) { </p><p class="Ex"> 0,0,0,1, 0,0,0,2, 0,0,0,3, 0,0,0,4</p><p class="Ex"> })</p><p class="Ex"> </p><p class="Ex"> //</p><p class="Ex"> // Method Execution</p><p class="Ex"> // Arg0 is instance being queried</p><p class="Ex"> // Arg1 is the method ID</p><p class="Ex"> // Arg2 is the method data passed</p><p class="Ex"> Method(WMBB, 3) {</p><p class="Ex"> if (LEqual(Arg1, 1))</p><p class="Ex"> {</p><p class="Ex"> Store(Arg3, B0ED)</p><p class="Ex"> Notify(AMW0, 0xB0)</p><p class="Ex"> Return(Arg3)</p><p class="Ex"> } else {</p><p class="Ex"> Return(Arg1)</p><p class="Ex"> }</p><p class="Ex"> }</p><p class="Ex"> </p><p class="Ex"> //</p><p class="Ex"> // More info about an event</p><p class="Ex"> // Arg0 is the event ID that was launched (�fired�)</p><p class="Ex"> Method(_WED, 1) {</p><p class="Ex"> if (LEqual(Arg0, 0xB0)) {</p><p class="Ex"> Return(B0ED)</p><p class="Ex"> }</p><p class="Ex"> }</p><p class="Ex"> </p><p class="Ex">}</p><p class="Ex"> </p><h2><a name="_Toc445868974">Sample ASL Code Embedding MOD Data in ASL</a></h2><p class="MsoNormal" style="page-break-after: avoid">The following sample ASL code shows another example of implementing an event mechanism using ASL code. It also provides an example of embedding MOF data into ASL.</p><p class="Ex" style="page-break-after: avoid">Device(AMW0)</p><p class="Ex" style="page-break-after: avoid">{</p><p class="Ex" style="page-break-after: avoid">//</p><p class="Ex" style="page-break-after: avoid">// pnp0c14 is the ID assigned by Microsoft to the WMI to ACPI mapper</p><p class="Ex" style="page-break-after: avoid"> Name(_HID, "*pnp0c14")</p><p class="Ex" style="page-break-after: avoid"> Name(_UID, 0x0)</p><p class="Ex" style="page-break-after: avoid">//</p><p class="Ex" style="page-break-after: avoid">// _WDG evaluates to a data structure that specifies the data blocks supported</p><p class="Ex" style="page-break-after: avoid">// by the ACPI device.</p><p class="Ex" style="page-break-after: avoid; margin-right: -84.0pt"> Name(_WDG, Buffer() {</p><p class="Ex" style="margin-right: -1.25in"> 0x5a, 0x0f, 0xBC, 0xAB, 0xa1, 0x8e, 0xd1, 0x11, 0x00, 0xa0, 0xc9, 0x06, 0x29, 0x10, 0, 0,</p><p class="Ex"> 65, 65, // Object ID (AA)</p><p class="Ex"> 2, // Instance Count</p><p class="Ex"> 0x01, // Flags WMIACPI_REGFLAG_EXPENSIVE</p><p class="Ex"> </p><p class="Ex" style="margin-right: -1.25in"> 0x5b, 0x0f, 0xBC, 0xAB, 0xa1, 0x8e, 0xd1, 0x11, 0x00, 0xa0, 0xc9, 0x06, 0x29, 0x10, 0, 0,</p><p class="Ex"> 65, 66, // Object ID (AB)</p><p class="Ex"> 2, // Instance Count</p><p class="Ex"> 0x02, // Flags WMIACPI_REGFLAG_METHOD</p><p class="Ex"> </p><p class="Ex" style="margin-right: -78.0pt"> 0x5c, 0x0f, 0xBC, 0xAB, 0xa1, 0x8e, 0xd1, 0x11, 0x00, 0xa0, 0xc9, 0x06, 0x29, 0x10, 0, 0,</p><p class="Ex"> 0xa0, 0, // Notification ID</p><p class="Ex"> 1, // Instance Count</p><p class="Ex"> 0x08, // Flags (WMIACPI_REGFLAG_EVENT)</p><p class="Ex"> </p><p class="Ex">//</p><p class="Ex">// This <span style="layout-grid-mode: line">GUID</span> for returning the MOF data</p><p class="Ex"> </p><p class="Ex" style="margin-right: -1.25in"> 0x21, 0x12, 0x90, 0x05, 0x66, 0xd5, 0xd1, 0x11, 0xb2, 0xf0, 0x00, 0xa0, 0xc9, 0x06, 0x29, 0x10,</p><p class="Ex"> 66, 65, // Object ID (BA)</p><p class="Ex"> 1, // Instance Count</p><p class="Ex"> 0x00, // Flags</p><p class="Ex"> </p><p class="Ex"> })</p><p class="Ex"> </p><p class="Ex">//</p><p class="Ex">// Collection control method. If Arg0 is not zero then collection for the</p><p class="Ex">// data block is enabled. If Arg0 is zero then collection is disabled. If </p><p class="Ex">// this method does not exist then it is assumed that collection control is</p><p class="Ex">// not required. Collection control is only useful when collection of the </p><p class="Ex">// data block causes overhead.</p><p class="Ex"> Method(WCAA, 1) {</p><p class="Ex"> if (LEqual(Arg0, Zero)) {</p><p class="Ex"> // Disable collection of data</p><p class="Ex"> } else {</p><p class="Ex"> // Enable collection of data</p><p class="Ex"> }</p><p class="Ex"> }</p><p class="Ex"> </p><p class="Ex" style="page-break-after: avoid">//</p><p class="Ex" style="page-break-after: avoid">// Query method for data block AA. Arg0 has the data block instance index</p><p class="Ex" style="page-break-after: avoid"> Method(WQAA, 1) {</p><p class="Ex" style="page-break-after: avoid"> if (LEqual(Arg0, Zero)) {</p><p class="Ex" style="page-break-after: avoid"> // Query is for first instance of data block</p><p class="Ex" style="page-break-after: avoid"> return(0x10)</p><p class="Ex" style="page-break-after: avoid"> } else {</p><p class="Ex" style="page-break-after: avoid"> // Query is for second instance of data block</p><p class="Ex" style="page-break-after: avoid"> return(0x20)</p><p class="Ex" style="page-break-after: avoid"> }</p><p class="Ex" style="page-break-after: avoid"> }</p><p class="Ex"> </p><p class="Ex">//</p><p class="Ex">// Set method for data block AA. If data block is read-only then this method</p><p class="Ex">// does not need to exist. Arg0 has the instance index of the data block,</p><p class="Ex">// Arg1 has the new value for the data block.</p><p class="Ex"> Method(WSAA, 2) {</p><p class="Ex"> if (LEqual(Arg0, Zero)) {</p><p class="Ex"> // Set is for first instance of data block</p><p class="Ex"> } else {</p><p class="Ex"> // Set is for second instance of data block</p><p class="Ex"> }</p><p class="Ex"> }</p><p class="Ex"> </p><p class="Ex">//</p><p class="Ex">// Event enable/disable method. If event does not need to be armed/disarmed</p><p class="Ex">// then this method is not needed. Arg0 is Zero if event is being disarmed or</p><p class="Ex">// non zero if event is being armed.</p><p class="Ex"> Name(ACEN, 0)</p><p class="Ex"> Method(WEA0, 1) {</p><p class="Ex"> Store(Arg0, ACEN)</p><p class="Ex"> }</p><p class="Ex"> </p><p class="Ex">//</p><p class="Ex">// _WED is called in response to an event launching (�firing�) to gain additional </p><p class="Ex">// information about the event. Arg0 has the NotifyId for the event launched.</p><p class="Ex"> Method(_WED, 1) {</p><p class="Ex"> if (LEqual(Arg0, 0xA0)) {</p><p class="Ex"> Return(0x100)</p><p class="Ex"> }</p><p class="Ex"> }</p><p class="Ex">//</p><p class="Ex">// Evaluation of this method causes the event 0xA0 to be fired. Since it is</p><p class="Ex">// defined by the _WDG method it is callable via WMI. Arg0 has the instance</p><p class="Ex">// index and Arg1 has any input parameters.</p><p class="Ex"> Method(WMAB, 3) {</p><p class="Ex"> //</p><p class="Ex"> // If event was armed then launch it</p><p class="Ex"> if (LEqual(ACEN, 1)) {</p><p class="Ex"> Notify(AMW0, 0xa0)</p><p class="Ex"> }</p><p class="Ex"> Return(Arg1)</p><p class="Ex"> }</p><p class="Ex"> </p><p class="Ex" style="page-break-after: avoid"> Name(WQBA, Buffer(926) {</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x46, 0x4f, 0x4d, 0x42, 0x01, 0x00, 0x00, 0x00, 0x8e, 0x03, 0x00, 0x00, 0xf6, 0x0f, 0x00, 0x00,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x44, 0x53, 0x00, 0x01, 0x1a, 0x7d, 0xda, 0x54, 0x98, 0xdd, 0x87, 0x00, 0x01, 0x06, 0x18, 0x42,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x10, 0x0b, 0x10, 0x0a, 0x0b, 0x21, 0x02, 0xcb, 0x82, 0x50, 0x3c, 0x18, 0x14, 0xa0, 0x25, 0x41,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0xc8, 0x05, 0x14, 0x55, 0x02, 0x21, 0xc3, 0x02, 0x14, 0x0b, 0x70, 0x2e, 0x40, 0xba, 0x00, 0xe5,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x28, 0x72, 0x0c, 0x22, 0x82, 0xfd, 0xfb, 0x07, 0xc1, 0x90, 0x02, 0x08, 0x29, 0x84, 0x90, 0x08,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x58, 0x2a, 0x04, 0x8d, 0x10, 0xf4, 0x2b, 0x00, 0xa1, 0x43, 0x01, 0x32, 0x05, 0x18, 0x14, 0xe0,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x14, 0x41, 0x04, 0x41, 0x62, 0x17, 0x2e, 0xc0, 0x34, 0x8c, 0x06, 0xd0, 0x36, 0x8a, 0x64, 0x0b,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0xb0, 0x0c, 0x2e, 0x98, 0xa3, 0x08, 0x92, 0xa0, 0xc6, 0x09, 0xa0, 0xc4, 0x4c, 0x00, 0xa5, 0x13,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x5c, 0x36, 0x05, 0x58, 0xc4, 0x96, 0x50, 0x14, 0x0d, 0x22, 0x4a, 0x82, 0x13, 0xea, 0x1b, 0x41,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x13, 0x2a, 0x57, 0x80, 0x64, 0x78, 0x69, 0x1e, 0x81, 0xac, 0xcf, 0x41, 0x93, 0xf2, 0x04, 0xb8,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x9a, 0x05, 0x7a, 0x8c, 0x34, 0xff, 0x30, 0x41, 0x99, 0x14, 0x43, 0x0e, 0x20, 0x24, 0x71, 0x98,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0xa0, 0x9d, 0x59, 0xed, 0x18, 0xd2, 0x3d, 0x07, 0x32, 0x4d, 0x60, 0x21, 0x70, 0x9e, 0xb8, 0x19,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0xa0, 0xf0, 0x5b, 0x1d, 0x80, 0xe0, 0x2b, 0x1d, 0x15, 0xd2, 0xeb, 0x34, 0x64, 0x72, 0x46, 0x48,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0xf8, 0xff, 0x7f, 0x02, 0x26, 0xe3, 0xb7, 0x60, 0x02, 0xa5, 0xd9, 0xb2, 0x82, 0x4b, 0x80, 0xc1,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x68, 0x00, 0x91, 0xa2, 0x69, 0xa3, 0xe6, 0xea, 0xf9, 0x36, 0x8f, 0xaf, 0x59, 0x7a, 0x9e, 0x47,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x7a, 0x34, 0x56, 0x36, 0x05, 0xd4, 0xf8, 0x3d, 0x9d, 0x93, 0xf3, 0x4c, 0x02, 0x1e, 0x9c, 0x61,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x4e, 0x87, 0x83, 0xf1, 0xb1, 0xb1, 0x51, 0x70, 0x74, 0x03, 0xb2, 0x31, 0x38, 0xc6, 0xb0, 0xd1,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x73, 0x39, 0x81, 0x47, 0x82, 0x43, 0x89, 0x7e, 0x0e, 0x6f, 0x00, 0x47, 0x17, 0xe3, 0x04, 0xce,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x27, 0xc1, 0x61, 0x06, 0x39, 0xe3, 0x33, 0xf4, 0x44, 0x2c, 0x68, 0xd6, 0x02, 0x0a, 0x62, 0xa4,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x58, 0xa7, 0xf5, 0x7c, 0x10, 0x8b, 0x41, 0x05, 0x8b, 0x11, 0xdb, 0x50, 0x87, 0x60, 0x18, 0x8b,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x46, 0x11, 0xc8, 0x49, 0x3c, 0x49, 0x30, 0x94, 0x40, 0x51, 0x0c, 0x12, 0xda, 0xc3, 0x36, 0x92,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x81, 0xcf, 0xdb, 0x20, 0xc7, 0x84, 0x51, 0x01, 0x21, 0xcf, 0xe3, 0xd0, 0x28, 0x4d, 0xd0, 0xfd,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x29, 0x40, 0x37, 0x8b, 0x08, 0x67, 0x54, 0xd8, 0x44, 0x64, 0x6d, 0x02, 0xb2, 0x25, 0x40, 0x1c,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0xbe, 0x40, 0x1a, 0x43, 0x11, 0x44, 0x84, 0x98, 0x51, 0x8c, 0x19, 0x30, 0x82, 0x51, 0x0e, 0xa6,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x39, 0x10, 0x69, 0x13, 0x30, 0xf6, 0x20, 0xd1, 0x62, 0x31, 0x04, 0xdb, 0x9f, 0x83, 0x30, 0x0e,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x05, 0xa3, 0x03, 0x42, 0xe7, 0x84, 0xc3, 0x3b, 0x30, 0x9f, 0x1e, 0x4c, 0x70, 0xda, 0xcf, 0x07,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0xaf, 0x0b, 0x21, 0x8b, 0x17, 0x20, 0x0d, 0x43, 0xf8, 0x09, 0x6a, 0x7d, 0x51, 0xe8, 0x5a, 0xe0,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x34, 0xe0, 0xa8, 0xeb, 0x82, 0x6f, 0x01, 0xbe, 0x01, 0x9c, 0xe0, 0xe3, 0x85, 0xf1, 0x83, 0x1c,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0xc1, 0x01, 0x3c, 0x44, 0xbc, 0x1a, 0x78, 0x08, 0x9e, 0xc3, 0xfb, 0x05, 0x3b, 0x0f, 0x60, 0xff,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0xff, 0x04, 0x5d, 0xe3, 0xe9, 0x92, 0x70, 0x02, 0x96, 0x83, 0x86, 0x1a, 0xac, 0x2f, 0x00, 0x27,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0xe9, 0xc1, 0x1a, 0xae, 0xae, 0xd3, 0x06, 0x7a, 0xba, 0xa7, 0x72, 0x5a, 0xa5, 0x0a, 0x30, 0x7b,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x94, 0x20, 0x04, 0xcf, 0x1e, 0x6c, 0xde, 0x67, 0x73, 0xe6, 0x09, 0x9e, 0x14, 0x3c, 0x05, 0x3e,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x2d, 0xcf, 0xd2, 0x97, 0x0e, 0x5f, 0x09, 0x7c, 0x9f, 0x30, 0x41, 0xf4, 0x27, 0x17, 0x36, 0x1a,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0xb8, 0xc3, 0xc6, 0x8d, 0x06, 0xce, 0xe5, 0xe0, 0xb1, 0xc3, 0x33, 0xf7, 0x5c, 0x4d, 0x50, 0xf3,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0xe5, 0x42, 0x4e, 0x66, 0x83, 0xd2, 0x03, 0xa2, 0x01, 0x3f, 0x34, 0x60, 0xd0, 0x1f, 0x19, 0xb8,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0xc8, 0x8b, 0x02, 0x95, 0x86, 0xac, 0xbf, 0x86, 0x45, 0x8d, 0x9b, 0x12, 0x58, 0xca, 0xa1, 0x82,</p><p class="Ex" style="margin-right: -1.25in"> 0xdc, 0x33, 0x7c, 0x9e, 0x38, 0x8c, 0x57, 0x00, 0xcf, 0xe6, 0xa0, 0x7c, 0x73, 0x71, 0xba, 0x7b,</p><p class="Ex" style="margin-right: -1.25in"> 0x05, 0x68, 0x66, 0x83, 0xbb, 0x51, 0x80, 0x05, 0xc3, 0xd7, 0x03, 0xdf, 0x30, 0xd8, 0xf1, 0xc3,</p><p class="Ex" style="margin-right: -1.25in"> 0xd7, 0x0c, 0x36, 0x24, 0x83, 0x45, 0x89, 0x14, 0x9b, 0x4d, 0xca, 0x03, 0xc0, 0xe0, 0xbd, 0xd7,</p><p class="Ex" style="margin-right: -1.25in"> 0xf8, 0x70, 0x61, 0x48, 0x9f, 0x31, 0xe0, 0x1e, 0x05, 0xe0, 0xfd, 0xff, 0xcf, 0x09, 0xe0, 0xb8,</p><p class="Ex" style="margin-right: -1.25in"> 0x6d, 0xf8, 0x2a, 0x62, 0x67, 0xf7, 0x0b, 0x5d, 0x6f, 0xb0, 0xf7, 0x1d, 0x78, 0xf8, 0x87, 0x85,</p><p class="Ex" style="margin-right: -1.25in"> 0xbb, 0x0b, 0x30, 0xb0, 0x13, 0xc5, 0x1c, 0x78, 0x80, 0xc7, 0x64, 0x1e, 0x78, 0xc0, 0x75, 0x96,</p><p class="Ex" style="margin-right: -1.25in"> 0x82, 0x3d, 0x04, 0xae, 0xfa, 0xc0, 0x83, 0xca, 0xf1, 0x6a, 0xa0, 0x67, 0x1e, 0xc0, 0xec, 0xff,</p><p class="Ex" style="margin-right: -1.25in"> 0xff, 0xcc, 0x03, 0x8c, 0xe0, 0x9f, 0x79, 0x80, 0x6b, 0xf4, 0x6b, 0x81, 0xde, 0x57, 0x3e, 0xf3,</p><p class="Ex" style="margin-right: -1.25in"> 0x00, 0x7c, 0x50, 0x79, 0x33, 0x01, 0xcd, 0xff, 0xff, 0x66, 0x02, 0xe3, 0xe0, 0xe0, 0x83, 0x88,</p><p class="Ex" style="margin-right: -1.25in"> 0xaf, 0x32, 0x3e, 0x11, 0x02, 0x93, 0xab, 0x09, 0x70, 0x09, 0x79, 0x27, 0xa2, 0x01, 0x07, 0x41,</p><p class="Ex" style="margin-right: -1.25in"> 0xaf, 0x01, 0x5c, 0x0b, 0x88, 0x66, 0xc8, 0xa6, 0x89, 0x25, 0x98, 0xe5, 0x22, 0x40, 0xef, 0x8a,</p><p class="Ex" style="margin-right: -1.25in"> 0x3e, 0x2a, 0xf1, 0x31, 0xfa, 0xa8, 0xc4, 0x70, 0xdf, 0x85, 0x8c, 0x7b, 0x7a, 0x67, 0xf7, 0xac,</p><p class="Ex" style="margin-right: -1.25in"> 0x84, 0xb9, 0x04, 0xbc, 0x8f, 0x80, 0x65, 0xf2, 0xf8, 0xd3, 0x07, 0x47, 0xf4, 0x85, 0xc1, 0x77,</p><p class="Ex" style="margin-right: -1.25in"> 0x23, 0x78, 0x04, 0xd5, 0x5f, 0x65, 0xa8, 0xfe, 0xbd, 0x48, 0x2f, 0x0c, 0xea, 0x2a, 0x03, 0x5c,</p><p class="Ex" style="margin-right: -1.25in"> 0xff, 0xff, 0x57, 0x19, 0x36, 0xc8, 0x63, 0x05, 0xcb, 0xf9, 0x11, 0x33, 0xc7, 0xd3, 0x8c, 0xe2,</p><p class="Ex" style="margin-right: -1.25in"> 0xa9, 0x78, 0xb8, 0xec, 0x62, 0x65, 0xef, 0x53, 0x25, 0xc7, 0x17, 0x5f, 0xab, 0xf0, 0x20, 0x8f,</p><p class="Ex" style="margin-right: -1.25in"> 0x31, 0xbe, 0xc3, 0x80, 0x71, 0x04, 0xef, 0x30, 0xc0, 0x35, 0xf0, 0xcb, 0x41, 0xd7, 0x40, 0xc0,</p><p class="Ex" style="margin-right: -1.25in"> 0xf6, 0xff, 0xff, 0x0e, 0x03, 0x96, 0xe0, 0x10, 0xba, 0x06, 0xe2, 0x64, 0x1c, 0x5b, 0xc8, 0x4d,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0xca, 0x53, 0x36, 0xc1, 0xa0, 0x13, 0xa6, 0x47, 0x40, 0xf0, 0xdc, 0x2b, 0x7c, 0x98, 0x00, 0xc7,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x48, 0x30, 0xe7, 0x08, 0x9f, 0x1f, 0x7c, 0x7d, 0x78, 0x93, 0x60, 0x37, 0x0e, 0xc3, 0xf8, 0xca,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0x07, 0x0f, 0xf2, 0x15, 0x8b, 0x5d, 0x26, 0xf8, 0x49, 0x0f, 0x6c, 0x17, 0x65, 0x70, 0xdc, 0x7f,</p><p class="Ex" style="page-break-after: avoid; margin-right: -1.25in"> 0xe0, 0x5c, 0x94, 0x81, 0x11, 0xee, 0xe3, 0x0f, 0xf8, 0x0f, 0xcb, 0x70, 0xfe, 0xff</p><p class="Ex" style="page-break-after: avoid"> })</p><p class="Ex" style="page-break-after: avoid"> }</p><p class="Ex" style="page-break-after: avoid"> </p><h2><a name="_Toc445868975">Sample .Mof File</a></h2><p class="MsoNormal" style="page-break-after: avoid">This sample .mof file complements the previous ASL code.</p><p class="Ex" style="page-break-after: avoid">[abstract]</p><p class="Ex" style="page-break-after: avoid">class AcpiSampleBase</p><p class="Ex" style="page-break-after: avoid">{</p><p class="Ex" style="page-break-after: avoid">};</p><p class="Ex" style="page-break-after: avoid"> </p><p class="Ex" style="page-break-after: avoid">[abstract]</p><p class="Ex" style="page-break-after: avoid">class AcpiSampleEvent : WMIEvent</p><p class="Ex" style="page-break-after: avoid">{</p><p class="Ex" style="page-break-after: avoid">};</p><p class="Ex" style="page-break-after: avoid"> </p><p class="Ex" style="page-break-after: avoid">[Dynamic, Provider("WMIProv"),</p><p class="Ex" style="page-break-after: avoid"> WMI,</p><p class="Ex" style="page-break-after: avoid"> Description("Counter for number of times the case has been hit"),</p><p class="Ex" style="page-break-after: avoid"> <span style="layout-grid-mode: line">GUID</span>("{ABBC0f5a-8ea1-11d1-A000-c90629100000}"),</p><p class="Ex"> locale("MS\\0x409")]</p><p class="Ex">class MachineHitSensor : AcpiSampleBase</p><p class="Ex">{</p><p class="Ex"> [key, read]</p><p class="Ex"> string InstanceName;</p><p class="Ex"> [read] Boolean Active;</p><p class="Ex"> </p><p class="Ex"> [WmiDataId(1),</p><p class="Ex"> Description("Number of times the case sensor determined that the machine has been hit"),</p><p class="Ex"> read</p><p class="Ex"> ] uint32 NumberTimesHit;</p><p class="Ex">};</p><p class="Ex"> </p><p class="Ex">[Dynamic, Provider("WMIProv"),</p><p class="Ex"> WMI,</p><p class="Ex"> Description("Counter for number of times the case has been hit"),</p><p class="Ex"> <span style="layout-grid-mode: line">GUID</span>("{ABBC0f5b-8ea1-11d1-A000-c90629100000}"),</p><p class="Ex"> locale("MS\\0x409")]</p><p class="Ex">class MachineHitSimulate : AcpiSampleBase</p><p class="Ex">{</p><p class="Ex"> [key, read]</p><p class="Ex"> string InstanceName;</p><p class="Ex"> [read] Boolean Active;</p><p class="Ex"> </p><p class="Ex"> [WmiMethodId(1),</p><p class="Ex"> Description("Simulate hitting the machine")</p><p class="Ex"> ] void HitMachine();</p><p class="Ex">};</p><p class="Ex"> </p><p class="Ex">[Dynamic, Provider("WMIProv"),</p><p class="Ex"> WMI,</p><p class="Ex"> Description("Event generated when machine is hit"),</p><p class="Ex"> <span style="layout-grid-mode: line">GUID</span>("{ABBC0f5c-8ea1-11d1-A000-c90629100000}"),</p><p class="Ex"> locale("MS\\0x409")]</p><p class="Ex">class MachineHitEvent : AcpiSampleEvent</p><p class="Ex">{</p><p class="Ex"> [key, read]</p><p class="Ex"> string InstanceName;</p><p class="Ex"> [read] Boolean Active;</p><p class="Ex"> </p><p class="Ex"> [WmiDataId(1),</p><p class="Ex"> Description("Force with which the machine was hit")</p><p class="Ex"> ] uint32 Force;</p><p class="Ex">};</p><p class="Ex"> </p><p class="MsoNormal">Appendix C�ASL sample code</p><p class="Ex">Device(WMI1) {</p><p class="Ex"> Name (_HID, EISAID("PNP0Cxx")) // Plug and Play ID for mapping driver (TBD)</p><p class="Ex"> _UID(1)</p><p class="Ex"> </p><p class="Ex"> //</p><p class="Ex"> // Data block and Wmi method to Object ID mappings</p><p class="Ex"> Name(_WDG, Buffer() {</p><p class="Ex"> // Object AA - {ABBC0F5A-8EA1-11d1-A53F-00A0C9062910}</p><p class="Ex"> 0xABBC0F5A, 0x8ea1, 0x11d1, 0x00, 0xa0, 0xc9, 0x06, 0x29, 0x10,</p><p class="Ex"> `A','A', // Object ID</p><p class="Ex"> 1, // Instance Count</p><p class="Ex"> 0x04, // Flags (WMIACPI_REGFLAG_STRING)</p><p class="Ex"> </p><p class="Ex"> // Object AB - {ABBC0F5B-8EA1-11d1-A53F-00A0C9062910}</p><p class="Ex"> 0xABBC0F5B, 0x8ea1, 0x11d1, 0x00, 0xa0, 0xc9, 0x06, 0x29, 0x10,</p><p class="Ex"> `A','B', // Object ID</p><p class="Ex"> 2, // Instance Count</p><p class="Ex"> 0x01, // Flag (WMIACPI_REGFLAG_EXPENSIVE)</p><p class="Ex"> </p><p class="Ex"> // Object AC - {ABBC0F5C-8EA1-11d1-A53F-00A0C9062910}</p><p class="Ex"> 0xABBC0F5C, 0x8ea1, 0x11d1, 0x00, 0xa0, 0xc9, 0x06, 0x29, 0x10,</p><p class="Ex"> `A','C', // Object ID</p><p class="Ex"> 1, // Instance Count</p><p class="Ex"> 0x06, // Flag (WMIACPI_REGFLAG_METHOD | _STRING)</p><p class="Ex"> </p><p class="Ex"> // Event 0x80 - {ABBC0F5D-8EA1-11d1-A53F-00A0C9062910}</p><p class="Ex"> 0xABBC0F5D, 0x8ea1, 0x11d1, 0x00, 0xa0, 0xc9, 0x06, 0x29, 0x10,</p><p class="Ex"> 0x80, // Notification value</p><p class="Ex"> 0, // Reserved</p><p class="Ex"> 0, // Instance Count (Not meaningful for events)</p><p class="Ex"> 0x0D // Flags (WMIACPI_REGFLAG_EXPENSIVE | _STRING |_EVENT)</p><p class="Ex"> })</p><p class="Ex"> </p><p class="Ex"> </p><p class="Ex"> </p><p class="Ex"> //</p><p class="Ex"> // IO ports for configuration of Object AB</p><p class="Ex"> OperationRegion(CAB0, SystemIo, 0xf8, 1) // Instance 0</p><p class="Ex"> OperationRegion(CAB1, SystemIo, 0xfc, 1) // Instance 1</p><p class="Ex"> OperationRegion(CABC, SystemIo, 0xf4, 1) // Enable/Disable Collection</p><p class="Ex"> </p><p class="Ex"> Method(WQAB, 1) {</p><p class="Ex"> //</p><p class="Ex"> // Read value from IO space for instance</p><p class="Ex"> if (LEqual(Arg0, Zero) {</p><p class="Ex"> Store(CAB0, Local0)</p><p class="Ex"> } else {</p><p class="Ex"> Store(CAB1, Local0)</p><p class="Ex"> }</p><p class="Ex"> </p><p class="Ex"> //</p><p class="Ex"> // If any of the lower 3 bits are set then return TRUE, else FALSE</p><p class="Ex"> if (And(Local0, 7))</p><p class="Ex"> Return( 0x00000001 )</p><p class="Ex"> } else {</p><p class="Ex"> Return( 0x00000000 )</p><p class="Ex"> }</p><p class="Ex"> }</p><p class="Ex"> </p><p class="Ex"> //</p><p class="Ex"> // Set the values for object AB</p><p class="Ex"> Method(WSAB, 2) {</p><p class="Ex"> if (LEqual(Arg0, Zero) {</p><p class="Ex"> // Change contents of first instance of data block to </p><p class="Ex"> // values in buffer in Arg1</p><p class="Ex"> } else {</p><p class="Ex"> // Change contents of second instance of data block to </p><p class="Ex"> // values in buffer in Arg1</p><p class="Ex"> }</p><p class="Ex"> }</p><p class="Ex"> </p><p class="Ex"> //</p><p class="Ex"> // Collection notification for object AB</p><p class="Ex"> Method(WCAB, 1) {</p><p class="Ex"> if (LEqual(Arg0, 1)</p><p class="Ex"> {</p><p class="Ex"> Store(One, CABC) // If enable, write all 1's to port</p><p class="Ex"> } else {</p><p class="Ex"> Store(Zero, CABC) // If disable, write all 0's to port</p><p class="Ex"> }</p><p class="Ex"> }</p><p class="Ex"> </p><p class="Ex"> </p><p class="Ex"> //</p><p class="Ex"> // Storage for maintaining values for the AA method. </p><p class="Ex"> Name(STAA, "XYZZY")</p><p class="Ex"> </p><p class="Ex"> Method(WQAA, 1) {</p><p class="Ex"> //</p><p class="Ex"> // Only one instance for AA so no need to check arg</p><p class="Ex"> return(STAA);</p><p class="Ex"> }</p><p class="Ex"> </p><p class="Ex"> // Data block mapped to Object AA does not support set so it does not need</p><p class="Ex"> // a WSAA method</p><p class="Ex"> </p><p class="Ex"> //</p><p class="Ex"> // Storage for maintaining state of flag that determines whether to fire (launch)</p><p class="Ex"> // the event or not. By default firing is disabled</p><p class="Ex"> Name(FIRE, 0)</p><p class="Ex"> </p><p class="Ex" style="page-break-after: avoid"> //</p><p class="Ex" style="page-break-after: avoid"> // This method will reset the values for AA and send a notification of</p><p class="Ex" style="page-break-after: avoid"> // its occurrence</p><p class="Ex" style="page-break-after: avoid"> Method(WMAC, 3) {</p><p class="Ex" style="page-break-after: avoid"> Store(STAA, Local0)</p><p class="Ex" style="page-break-after: avoid"> Store("XYZZY", STAA)</p><p class="Ex" style="page-break-after: avoid"> if (LEqual(FIRE, 1))</p><p class="Ex"> {</p><p class="Ex"> Notify(WMI1, 0x80)</p><p class="Ex"> }</p><p class="Ex"> Return(Local0)</p><p class="Ex"> }</p><p class="Ex"> </p><p class="Ex"> //</p><p class="Ex"> // Additional information about event</p><p class="Ex"> Method(_WED) {</p><p class="Ex"> return("Fired")</p><p class="Ex"> }</p><p class="Ex"> </p><p class="Ex"> //</p><p class="Ex"> // Event 0x80 Enable/Disable control method</p><p class="Ex"> Method(WE80, 1) {</p><p class="Ex"> Store(FIRE, Arg0)</p><p class="Ex"> }</p><p class="Ex">)</p><p class="Ex"> </p><p class="MsoNormal"><i> </i></p><p class="MsoNormal"> </p>
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