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According to an old, GPL'ed Linux driver at <ftp://ftp.mccdaq.com/downloads/iotech_software/DaqBoard_1000_2000_Series/Linux_driver_kernelv2.4.x/>, after programming the FPGA, the General Purpose Input (USERI) of the PLX PCI-9080 should go high shortly after a valid FPGA bitstream has been loaded. Add a new function `daqboard2000_wait_fpga_programmed()` to wait for that, performing up to 200 checks over a 20 ms period (this is loosely based on `pollFPGADone()` in the above-mentioned old driver). Return 0 if the FPGA appears to have loaded successfully, or `-ETIMEDOUT` if it runs out of checks. Call it from the firmware loading callback `daqboard2000_load_firmware()` after writing the firmware to the FPGA to check it is programmed successfully. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.