Andrew Morton wrote: > (argh, shit, resent. Please don't massage the cc list. Do reply-to-all) > > On Thu, 6 Dec 2007 01:33:16 +0000 (UTC) > Parag Warudkar <parag.warudkar@xxxxxxxxx> wrote: > >> Tom Lanyon <tomlanyon <at> gmail.com> writes: >> >>> scsi4: ahci >>> ata5: SATA link up at 1.5 Gbps (SStatus 113 SControl 300) >>> ata5.00: ATAPI, max UDMA/66 >>> ata5.00: qc timeout (cmd 0xef) >>> ata5.00: failed to set xfermode (err_mask=0x104) >>> ata5.00: limiting speed to UDMA/44 >>> ata5: failed to recover some devices, retrying in 5 secs >>> ata5: port is slow to respond, please be patient (Status 0x80) >>> ata5: port failed to respond (30 secs, status 0x80) >>> ata5: COMRESET failed (device not ready) >>> ata5: hardreset failed, retrying in 5 secs >>> ata5: SATA link up at 1.5 Gbps (SStatus 113 SControl 300) >>> ata5.00: ATAPI, max UDMA/66 >>> ata5.00: qc timeout (cmd 0xef) >>> ata5.00: failed to set xfermode (err_mask=0x104) >>> ata5.00: limiting speed to PIO0 >>> ata5: failed to recover some devices, retrying in 5 secs >>> ata5: port is slow to respond, please be patient (Status 0x80) >>> ata5: port failed to respond (30 secs, status 0x80) >>> ata5: COMRESET failed (device not ready) >>> ata5: hardreset failed, retrying in 5 secs >>> ata5.00: ATAPI, max UDMA/66 >>> ata5.00: qc timeout (cmd 0xef) >>> ata5.00: failed to set xfermode (err_mask=0x104) >>> ata5.00: disabled >>> >> Looks like it is trying to set transfer mode to UDMA/66 and failing. After >> that it tried UDMA/44 and failed again. Next UDMA/66 again with unsurprising >> result - failed. After that PIO0 which seems to cause some kind of trouble, >> then it tries UDMA/66 again, and I am not stating the result again :) ! >> >>> Any ideas what to try to get it working under AHCI? >>> >> I recall reading somewhere - the Pioneer drive needs UDMA/33 which it did not >> try in your case - need to some how have it try UDMA/33 but I don't find a >> boot parameter which will do that. So may be adding a quirk for this device to >> limit the xfer mode to 33 may work. >> >> What does your dmesg output for the drives look like when you run in IDE >> compat mode? (Particularly the DMA for this drive?) >> Also, does irqpoll help? -- tejun - 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
