right - that's what I was referring to - the data buffer alignment - looks like it's smart enough to handle that - perfect.
On Mon, Feb 11, 2013 at 5:41 PM, Andrew Fish <[email protected]> wrote: > > On Feb 11, 2013, at 5:34 PM, "David F." <[email protected]> wrote: > >> Hi, >> >> Is the DISK_IO protocol smart enough to handle using an internal >> buffer ONLY WHEN NEEDED? or does it always us it. i.e. Assuming all >> IO will be block size aligned on blocks, if a buffer is aligned does >> it transfer data directly to/from the buffer or does it still use the >> internal buffers? and/or is it implementation specific? >> > > It is not just block alignment, but IO alignment as well. It is legal for a > Block IO device to specify an alignment it requires to DMA into your buffer. > > Quality of service is implementation: > https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2/MdeModulePkg/Universal/Disk/DiskIoDxe/DiskIo.c > > Thanks, > > Andrew Fish > >> TIA!! >> >> ------------------------------------------------------------------------------ >> Free Next-Gen Firewall Hardware Offer >> Buy your Sophos next-gen firewall before the end March 2013 >> and get the hardware for free! Learn more. >> http://p.sf.net/sfu/sophos-d2d-feb >> _______________________________________________ >> edk2-devel mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/edk2-devel > > > ------------------------------------------------------------------------------ > Free Next-Gen Firewall Hardware Offer > Buy your Sophos next-gen firewall before the end March 2013 > and get the hardware for free! Learn more. > http://p.sf.net/sfu/sophos-d2d-feb > _______________________________________________ > edk2-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/edk2-devel ------------------------------------------------------------------------------ Free Next-Gen Firewall Hardware Offer Buy your Sophos next-gen firewall before the end March 2013 and get the hardware for free! Learn more. http://p.sf.net/sfu/sophos-d2d-feb _______________________________________________ edk2-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/edk2-devel
