It is a driver for a generic mars development board that implements the SDIO protocol without additional functionality.ĭownload the Storage SDIO driver sample from GitHub. The driver is written using the Kernel Mode Driver Framework. This sample (no longer supported) is a functional Secure Digital (SD) IO driver. For a description of these function request types, see SD_REQUEST_FUNCTION. SD device drivers can manage the host controller's common register set and the state of the device by calling SdBusSubmitRequest with function requests of type SDRF_GET_PROPERTY and SDRF_SET_PROPERTY. SD I/O commands that specify a function number of a different device stack. SD I/O commands that specify function zero but are outside the range of the address specified in the function basic register (FBR). SD commands that change the device state, such as SELECT_CARD. To ensure this independence, the bus driver rejects the following operations: The driver stacks for the various card functions on a multifunction card must operate independently of one another. Restrictions on SD Card DriversĬertain restrictions apply to Secure Digital (SD) card device drivers that manage a function on an SD combo or multifunction card. Restrictions on SD Card Drivers SD Card Hardware Identifiersįor information about Secure Digital (SD) device identification strings, see Identifiers for Secure Digital (SD) Devices. Managing SD Cards in User-Mode Applications Secure Digital Requests That Use Extended I/O Secure Digital Requests That Use Direct I/O Opening, Initializing and Closing an SD Card Bus Interface
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