On Tue, 19 Oct 2021 20:24:45 -0700 Bart Van Assche <bvanassche@xxxxxxx> wrote: > On 10/19/21 17:33, Yanling Song wrote: > > On Wed, 13 Oct 2021 15:00:07 -0700 > > Bart Van Assche <bvanassche@xxxxxxx> wrote: > >> Please take a look at the bsg_setup_queue() call in > >> ufs_bsg_probe(). That call associates a BSG queue with the UFS > >> host. That queue supports requests of type struct ufs_bsg_request. > >> The Fibre Channel transport driver does something similar. I > >> believe that this is a better solution than introducing entirely > >> new ioctls. > > > > I wish there was a standard way to address the ioctrl issue. > > Unfortunately ioctrl is the only way to meet our requirements as > > listed in the above. > > As discussed in previous megaraid's patchsets: > > https://lore.kernel.org/linux-scsi/yq1inc2y019.fsf@xxxxxxxxxx/, > > that's why every raid controller has it's own ioctrl. > > Why are ioctls the only solution? Why is a bsg interface attached to > the SCSI host not appropriate? I haven't found the answer in the > conversation about the Megaraid driver. > I just wanted to let you know that we are working on the feasibility of bsg, but it involves utility/drivers/fw and takes time. Please do not take my lack of responses during this time as ignoring you. Will update the thread when we have a conclusion. > Thanks, > > Bart. > >
