On Thursday 15 June 2006 4:14 am, rakesh kn wrote: > Hi all, Let me repeat my earlier multiple requests to you that you not send me private email that's duplicating what you send to the public linux-usb-devel list ... one copy is more than enough.
> If my processor is ARM based, i get the DMA address in Big-Endian, > and i convert the DMA address to Little-Endian and assigning in Qtd > Hardware Buffers. My EHCI Controller is ARC. Actually most ARM processors are little-endian, although some support both operational modes. Have you tried running your CPU in little-endian mode, which is more conventional? I took a quick glance at the EHCI spec and didn't see any text specifying endianness for those fields. Clearly all the PCI based controllers use little-endian encoding. So in theory I suppose some EHCI vendor might have chosen to implement DMA pointers in cpu-native format, rather than always being little-endian. OHCI has some ugly code to cope with that class of problem ... it's worst for systems that have both PCI (little-endian) and odd-endian hardware. - Dave _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
