Correction..i meant LUNS behind the SCSI Targets --- Somnath kotur <[EMAIL PROTECTED]> wrote:
> Hi David/anybody else who could provide an answer to > this one > > I would like to know if there is an DDI/DKI > API > or some undocumented call by which one can inform > the > OS of a target thats been added/removed ,this is > especially useful in a non-DAS environment,(SCSI > interconnect is not the regular SPI) and targets can > be added/removed on the fly and the same needs to be > conveyed to the OS (solaris x86) ...basicaly > simulating a tgt probe from inside the SCSI HBA > driver?? > > Thanks in advance > > Som > > --- David Gwynne <[EMAIL PROTECTED]> wrote: > > > On Fri, Dec 21, 2007 at 12:59:23AM -0800, Somnath > > kotur wrote: > > > Hi David, > > > I am involved in writing a SCSI HBA > > Driver > > > myself for properietary card, i noticed that in > > > tran_init_pkt , you first stash away the DMA > > cookies > > > for the 'buf' structure in an intermediate > > structure > > > called the ccb_sgl[] ,and then in tran_start you > > load > > > the hw sgl with this ccb_sgl (referring to > > function > > > mfi_load_sgl()) ..Is there a reason the hw sgl > was > > not > > > directly loaded in tran_init_pkt in the same > loop > > as > > > the ccb_sgl[] is loaded ? i saw the svn commit > for > > the > > > same and am not sure i fully understood, could > you > > pls > > > explain? > > > > solaris has a really annoying "feature" where you > > cant iterate over its > > dma descriptors more than once. so if you want to > > use them twice you > > have to keep a copy of their values yourself. i > > stash the values > > because i need their value twice, the first time > in > > init_pkt to figure > > out how much you're going to transfer in that io, > > and the second time > > in tran_start as you describe above. > > > > the reason i dont write the sgl to the hardware > > descriptor during > > init_pkt is because i dont know what type of > command > > im doing at that > > point. mfi handles block io operation with a > > differently sized command > > to the one you pass the rest of the scsi commands > to > > the firmware with. > > this means the beginning of the sgl can be in two > > different offsets. i > > cant write the sgl till tran_start when i figure > out > > what command > > it is. > > > > hope this helps, > > dlg > > > > > > > > Thanks > > > Som > > > --- David Gwynne <[EMAIL PROTECTED]> wrote: > > > > > > > Hi, > > > > > > > > I have written a driver called mfi that > supports > > the > > > > LSI MegaRAID SAS > > > > and Dell PERC 5 RAID controllers. This > hardware > > > > currently lacks > > > > support in OpenSolaris, but a lot of of the > big > > > > vendors (it seems > > > > like everyone except Sun) are now shipping > these > > > > boards in their > > > > machines. Integrating this driver could open > > doors > > > > for OpenSolaris > > > > based distributions on these machines. > > > > > > > > I currently have a RFE 6556091 open against > this > > > > code, however, I'd > > > > like to see the process of integration done in > > the > > > > open and by the > > > > community, hence this project proposal. > > > > > > > > The code for the driver is available at the > > > > following urls: > > > > > > > > http://www.itee.uq.edu.au/~dlg/mfi/ > > > > https://svn.itee.uq.edu.au/repo/mfi/ (svn) > > > > https://svn.itee.uq.edu.au/viewvc/mfi/ > > > > > > > > Feel free to contact me if you need further > > > > information. > > > > > > > > dlg > > > > > _______________________________________________ > > > > driver-discuss mailing list > > > > driver-discuss@opensolaris.org > > > > > > > > > > http://mail.opensolaris.org/mailman/listinfo/driver-discuss > > > > > > > > > > > > > > > > > > > ____________________________________________________________________________________ > > > Looking for last minute shopping deals? > > > Find them fast with Yahoo! Search. > > > http://tools.search.yahoo.com/newsearch/category.php?category=shopping > > > > > > > ____________________________________________________________________________________ > Be a better friend, newshound, and > know-it-all with Yahoo! Mobile. Try it now. > http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ > > > _______________________________________________ > driver-discuss mailing list > driver-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/driver-discuss > ____________________________________________________________________________________ Looking for last minute shopping deals? Find them fast with Yahoo! Search. http://tools.search.yahoo.com/newsearch/category.php?category=shopping _______________________________________________ driver-discuss mailing list driver-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/driver-discuss
