On Thu, 8 Jan 2009 20:14:36 -0200 "Thiago Galesi" <thiagogalesi@xxxxxxxxx> wrote: > > > > Hi, > > > > I have written some code to program a FPGA in Linux, for two > > > > different types of boards: one uses a serial interface (SPI) and > > > > the second a parallel interface. I have been able to sucessfully > > > > program both boards. I'm now trying to clean my code and make it > > > > more generic, as well as better in line with the Linux driver > > > > model. > > Considering the several FPGA models available and ways to program it, > I guess the important thing to consider is what can be made generic. > (that is what will become fpgaload) I have a pretty good idea of what goes into the core and what goes into the specific interface modules (spi, parallel, etc). > Also, there may be cases where after FPGA is programmed it "becomes a > device" (PCI or whatever) This is exactly the case for my board, but it doesn´t change anything to the programming side of things, apart for the fact that the FPGA must be configured before using any in-FPGA PCI bus for example. > > > - fpgaload-core which contains all the code that can be shared > > > between the drivers like requesting firmware, providing sysfs > > > attributes, > > > - fpgaload-spi would handle the low-level SPI connection > > > - fpgaload-par would handle the low-level parallel connection > > I think this maybe split into three layers (maybe) > > 1 - low level connection: paralell / spi / i2c / whatever > 2 - vendor: xylinx, altera, etc > 3 - generic stuff > > Take a look at the MTD and SPI drivers and how they split things I think that for the moment, I will focus on implementing the core module and the parallel/SPI interfaces only. Later we may want to add more fonctionality (vendors, JTAG, etc). But for now, my main problem is that I need to have some insight on how I actually implement the different modules: Bus driver? class driver? platform driver? Can anybody give some advice on that? Thank-you, Hugo. --------------- Hugo Villeneuve www.hugovil.com --------------- -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
