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微软官方文档。5 W, R: z! J1 n6 d7 e- {- c
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.
! k/ P5 N' ~- [% _- g; K2 f- ?. z 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.
1 P) l1 K& ], v! Z) G# d2 g/ j8 E: B 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:% i1 ]# D% ~5 {* Z+ t! V- _4 U, c: C
• Only WDF or WDM drivers are supported.
6 q( T9 o# l6 k# | i' ]3 m$ X• 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！