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微软官方文档。8 x5 C" E/ G' S2 @( e4 f; A* p
Kernel-mode device drivers are able to evaluate ACPI control methods via I/O control codes (IOCTLs). Typically, a driver evaluates ACPI control methods to initiate or configure platform-specific functionality.
' Q0 L; h! ]/ s8 P9 e An ACPI control method is a definition of how to interrogate or adjust system hardware. Control methods are written in the ACPI Machine Language (AML) and are interpreted by the ACPI driver in Microsoft® Windows®. These objects are loaded from the system definition in firmware into the ACPI namespace.+ w' p! M/ `9 a( l$ @
Drivers can evaluate ACPI control methods within the namespace of the device object on which they are loaded. This also includes control methods in the namespace of child objects. A driver must meet the following requirements when evaluating ACPI control methods:( Q0 n- i1 ~; i+ O; s3 d; C, Q+ F6 C" z
• Only WDF or WDM drivers are supported.+ d8 K" H* \6 m8 k& }$ F _$ [4 }
• Drivers may evaluate control methods only within the namespace of the device object on which they are loaded. This includes the namespace of child device objects. |
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狗仔卡
发表于 2007-11-16 19:19:40
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发表于 2011-1-30 13:54:51
多谢楼主的资料too！