On Wed, 2007-01-03 at 10:45 -0500, Jeff Garzik wrote: > James Bottomley wrote: > > On Wed, 2007-01-03 at 00:42 -0500, Mark Lord wrote: > >> James Bottomley wrote: > >>> I don't think I quite understand what you're trying to do here. My > >>> understanding is that ATA_12 and ATA_16 are part of the SAT layer. i.e. > >>> they're used when we're speaking SCSI to an underlying ATA device to > >>> send taskfiles. However, ATAPI devices don't use SAT ... every SCSI > >>> command you send to an ATAPI device goes out as an ATA PACKET command > >>> without being translated. > >> ATAPI devices also implement quite a few ATA (non-packet) commands. > >> This patch gives us a way to issue them in response to SG_IO ATA passthru > >> and the existing (non working) libata HDIO_DRIVE_CMD and HDIO_DRIVE_TASK > >> ioctl calls. > > > > I know that ... but when you send ATA_16 down to an ATAPI device via > > SG_IO the code paths in libata don't unwrap it and send it out as a > > taskfile ... they put ATA_16 out as a packet command. > > He is aware of that. That's what his two patches address. Er I've only seen one patch ... I did ask if there was another to add the ATA_16 interpretation ... did that get lost by the SCSI reflector? James - 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
