Hello, I found that any HDIO_DRIVE_CMD ioctl on sata drive connected through mpsas and backplane will fail. Basically the scsi_host_template structure is missing ioctl callback. after adding it and temporary tweaking domain_device structure associated to scsi_device (rphy only) i reached a point where ata_scsi_ioctl returns EIO and this why i need some clue on a way of adding such support similar way to aic94 where it has been done. I found also that mptsas leaves domain_device rather uninitialized. the example is rphy but there more fields i don't know if they are revelant to proper processing of HDIO_DRIVE_CMD. i need additional references on libata design, call flow and structures relationship. probably it would be the best to design mptsas from scratch using libsas but this seems to me as huge work although if i was guided i would probably complete this. I tried another approach where i used SG_IO ioctl and prepared ATA_16 cdb (just like libata does) but this failed on mptsas connected drives too altough this way works on drives connected to ICH6. Regards, Krzysztof Blaszkowski -- 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
