CEDDK Dynamic-Link Library Bus Access IOCTLs (Windows CE 5.0)
The following table shows the IOCTLs that operate with a bus driver handle. These IOCTLs complement the CEDDK Dynamic-Link Library Bus Access Functions.
| IOCTL | Description |
|---|---|
| IOCTL_BUS_ACTIVATE_CHILD | This IOCTL loads a specified subordinate driver. |
| IOCTL_BUS_DEACTIVATE_CHILD | This IOCTL unloads a specified subordinate driver. |
| IOCTL_BUS_GET_CONFIGURE_DATA | This IOCTL reads from the configuration space of a subordinate driver specified by the bus name. Different buses have different configuration space names.
For a PCI bus, PCI_WHICHSPACE_CONFIG is supported. For a PC CARD bus, these names are supported:
|
| IOCTL_BUS_GET_POWER_STATE | This IOCTL obtains the bus power level for a subordinate driver. Power control operations should only be initiated by the subordinate driver affected by the request. |
| IOCTL_BUS_IS_CHILD_REMOVED | This IOCTL determines if the subordinate driver has been removed. Subordinate drivers can use this to check if the caller has been removed or not. This call also can be used in subordinate driver's power callback. |
| IOCTL_BUS_NAME_PREFIX | This IOCTL retrieves the bus name prefix. |
| IOCTL_BUS_POSTINIT | This IOCTL unloads a subordinate driver in an alternate thread, which allows subordinate drivers to request that they themselves be unloaded. |
| IOCTL_BUS_TRANSLATE_BUS_ADDRESS | This IOCTL translates the physical bus address to the physical system address. Use this function to replace the legacy HalTranslateBusAddress function. |
| IOCTL_BUS_SET_POWER_STATE | This IOCTL changes the bus power level for a subordinate driver specified by the bus name. Client drivers request this service from their bus drivers. Power control operations should only be initiated by the subordinate driver affected by the request. |
| IOCTL_BUS_SET_CONFIGURE_DATA | This IOCTL writes to configuration address space for a subordinate driver specified by the bus name. Different buses have different configuration address space names. |
| IOCTL_BUS_TRANSLATE_SYSTEM_ADDRESS | This IOCTL performs a device bus address translation. |
Send Feedback on this topic to the authors