BusTransBusAddrToStatic (Compact 2013)

3/26/2014

This function translates a bus address to a system address. Then, it creates a static, process independent, virtual address mapping for that address.

Syntax

BOOL BusTransBusAddrToStatic (
  HANDLE hBusAccess,
  INTERFACE_TYPE InterfaceType,
  ULONG BusNumber,
  PHYSICAL_ADDRESS BusAddress,
  ULONG Length,
  PULONG AddressSpace,
  PPVOID MappedAddress
);

Parameters

• hBusAccess
  [in] Handle obtained from CreateBusAccessHandle.

• InterfaceType
  [in] Bus type specified by an element of INTERFACE_TYPE.

• BusNumber
  [in] Bus number where the device resides.

• BusAddress
  [in] Bus-relative address of registers and ports on the device. The PHYSICAL_ADDRESS is represented by 40 bits. BusTransBusAddrToStatic calls CreateStaticMapping, which right-shifts (>>) the 40-bit address by 8 bits.

• Length
  [in] Number of bytes to map on the device.

• AddressSpace
  [in, out] Flag to indicate whether what this function maps to is in I/O space or memory space. On input, this is an initialized variable. On output, this is the flag. AddressSpace 0x0 indicates memory space and AddressSpace 0x1 indicates I/O space.

• MappedAddress
  [out] Virtual address where this function mapped the physical address.

Return Value

Returns TRUE if successful. Otherwise, it returns FALSE.

Requirements

See Also

Reference

Ceddk.dll Bus Access Functions
CreateBusAccessHandle
INTERFACE_TYPE

Other Resources

CreateStaticMapping