Was the new BestComm support in the 2.6.23.1 kernel he is using? On Thu, Oct 23, 2008 at 6:28 PM, Matt Sealey <[EMAIL PROTECTED]> wrote: > You need to write a task that does the DMA operation you want; GenBD is > actually pretty generic and lets you just copy from one place to another. > > The API is pretty simple; make sure genbd is compiled in, get the task > structure using bcom_gen_bd_[tr]x_init, and then.. uhh.. this is where I > always forget. > > There is a way to submit a buffer descriptor and have the engine basically > perform that transfer. I think it's bcom_prepare_next_buffer and then > bcom_submit_next_buffer. > > Actually I can't even FIND those functions in the Linux tree right now, but > they have to be in there because the FEC driver uses them.. > > -- > Matt Sealey <[EMAIL PROTECTED]> > Genesi, Manager, Developer Relations > > Dave Best wrote: >> >> I am trying to connect a FPGA/FIFO with my MPC5200b on a phytec PCM 030 >> board while running a 2.6.23.1 Linux. >> >> The Linux Kernel source contains an implementation for the Bestcomm API in >> the form of a driver for ethernet (fec) and ATA.(situated in the >> arch-powerpc/sysdev/bestcomm path) I tried to make use of it but i've run >> into some problems. >> >> So i tried to include the API in a module to utilize its functionality but >> no luck till now. >> >> Freescale supports the Bestcomm DMA API not on an OS level. So the problem >> is adopting this API into a Linux environment, which distinguishes between >> kernel space and user space while writing to the appropriate registers. >> >> Further information is very hard to find for such a common task as >> starting a DMA transfer. >> >> Dave >> >> >> >> _______________________________________________ >> Linuxppc-embedded mailing list >> Linuxppc-embedded@ozlabs.org >> https://ozlabs.org/mailman/listinfo/linuxppc-embedded > > > _______________________________________________ > Linuxppc-embedded mailing list > Linuxppc-embedded@ozlabs.org > https://ozlabs.org/mailman/listinfo/linuxppc-embedded >
-- Jon Smirl [EMAIL PROTECTED] _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
