On Sat, Aug 23, 2008 at 8:19 PM, Mikael Pettersson <mikpe@xxxxxxxx> wrote: > Mark Nelson writes: > > On Sat, Aug 23, 2008 at 8:01 AM, Mikael Pettersson <mikpe@xxxxxxxx> wrote: > > > Jeff Garzik writes: > > > > Mikael Pettersson wrote: > > > > > Mark Nelson writes: > > > > > > > But without docs or a reference driver I cannot really say what it > > > > > > > would take to support it, sorry. > > > > > > > > > > > > Yeah, I figured as much after reading that hardware docs > > > > > > are only available under NDA... I do have Promise's "partial > > > > > > open source driver" all working with the controller; but I > > > > > > don't think that's what you meant by reference driver, is it? > > > > > > > > > > No. Promise's partial-source drivers sometimes contain some useful > > > > > information, like register definitions, but the only useful info > > > > > in the TX4650 driver is the PCI ID list for the T3 chip family. > > > > > > > > FWIW there's always the chance it belongs to drivers/scsi/stex.c... > > > > > > True, but unfortunately I doubt it as the PCI IDs in the tx4650 > > > (partial) sources bear no resemblance to the ones in stex.c. > > > > Would the other PCI IDs that are found in the tx4650 driver give any > > clue as to which other chips the T3 controller is similar to (or does > > that just show that Promise likes to reuse the open source wrapper > > around their binary blob)? > > The latter. The tx4650 sources lists chips from Intel (AHCI), ATI, and > Marvell, and they are definitely dissimilar to Promise's own chips. > > > Forgive my ignorance, but does the fact that the T3 controller can also > > use SAS disks mean we should be looking for a SCSI driver? > > Promise lists only this one partial-source driver for the tx4650, > and it /is/ a Linux scsi driver. > Oh sorry, I meant to ask should we be looking at an in-kernel (or fully open source driver) that is a SCSI driver that we could make work with the T3? So maybe my question is actually: does the fact that this controller supports SAS disks mean that the driver for it should be a scsi driver (rather than an ATA driver)? Thanks! Mark -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
