• Stephen Neuendorffer's avatar
    [POWERPC] Xilinx: hwicap driver · ef141a0b
    Stephen Neuendorffer authored
    
    
    This includes code for new fifo-based xps_hwicap in addition to the
    older opb_hwicap, which has a significantly different interface.  The
    common code between the two drivers is largely shared.
    
    Significant differences exists between this driver and what is
    supported in the EDK drivers.  In particular, most of the
    architecture-specific code for reconfiguring individual FPGA resources
    has been removed.  This functionality is likely better provided in a
    user-space support library.  In addition, read and write access is
    supported.  In addition, although the xps_hwicap cores support
    interrupt-driver mode, this driver only supports polled operation, in
    order to make the code simpler, and since the interrupt processing
    overhead is likely to slow down the throughput under Linux.
    
    Signed-off-by: default avatarStephen Neuendorffer <stephen.neuendorffer@xilinx.com>
    Signed-off-by: default avatarGrant Likely <grant.likely@secretlab.ca>
    ef141a0b