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微软官方文档。
4 e( j4 W& x! F# s 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.
9 M3 O% I1 i2 T! i 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. a# f, p" y. _( U' e
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:* s+ i! i- [, B9 N1 `- K
• Only WDF or WDM drivers are supported." y/ g) v7 F3 n8 [% L' F' T2 S. w
• 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！