On Wed, Nov 29, 2017 at 03:39:19PM +0000, Bean Huo (beanhuo) wrote: > Hi, Greg > > >On Mon, Nov 27, 2017 at 11:25:47AM +0000, Bean Huo (beanhuo) wrote: > >> Hi, all > >> Is there someone knows if exists one utilis dedicated to UFS device, rather > >than SCSI utils? > >> I have tried sg3-utils, but it is not convenient for the embedded ARM-based > >system. > >> And also it doesn't support several UFS special command. > > > >What specific UFS commands do you need to make to the device that the > >current driver does not support? > > > There are some UFS/vendor native commands. They are not SCSI based. Exactly what ones are missing? Again, there are numerous non-scsi UFS commands supported in sysfs files in the in-kernel, and lots in the different forks I mentioned. I bet if you pull all of those together, you should cover all of the ones you need, right? > >And yes, this is a trick question as there are about 4 different major forks that > >I know of of the UFS driver in different vendor trees, all of which support > >different types of UFS commands :( > > > >> If we don't have this kind of tool for UFS, is it necessary for us to develop a > >>ufs-utils? > > > >I doubt it, what neds to happen is getting all of the functionality that lives in > >these different forks all merged upstream into the in-kernel driver. Then I bet > >all of the needed functionality you are looking for will be there. > > > Sometimes customers tend to use user space tool to do some configuration. > And especially, for example the UFS FFU. Again, that's fine, have you looked at what is currently present and what is missing? thanks, greg k-h
