Hi, Bernhard Praschinger wrote: > I'd really like to hear of a success story (or how you call it). That a > zoran card works on a 64 bit machine with a 64bit kernel.
I have a DC10+ running with a 64-bit Linux 2.6.26 on Intel Core2 Machine. But I had to do some modifications to the driver because the Zoran card can only adress the lower 32-bit of RAM with its DMA engine so the buffers for data transfer need to be allocated in that area. I did post the necessary changes for some older Kernel versions two years ago on the developer list, but I didn't receive much feedback iirc. > I know that video playback works with xawtv works on a 64 bit kernel. > But I was not able to make the zoarn card (DC30 and buz) to record > anything. Unfortunately I don't have access to a DC30 or buz, but I guess the driver code for these cards needs similar changes to work on 64-bit. > One think I can try is installing on my machine a 32bit OS and check if > recording work. That we would know at least if it is a 32 <-> 64 bit > kernel problem. But for that I would need to find some (extra) time. Probably this isn't necessary. I think it should be enough to limit the amount of memory the kernel uses to the lower 2 or 3 GB of RAM so that the DMA area stays within the 32-bit address space. I guess it should suffice to pass mem=2G as a kernel parameter on the bootloader to make the card work with an unmodified driver on 64 bits. Regards, Klaus. ------------------------------------------------------------------------------ _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
