linux-ide@xxxxxxxxxxxxxxxxx wrote:
Hello, several Sony Vaio laptops seem to have the PIONEER DVD-RW DVRTD08 DVD/CD drive built in. This drive is available only when a disc is inserted during boot. when no disc is present, dmesg has [ 3.715535] ata2: SATA max UDMA/133 abar m2048@0xd3e04000 port 0xd3e04180 irq 218 [ 4.368166] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 4.380063] ata2.00: ATAPI: PIONEER DVD-RW DVRTD08, 1.00, max UDMA/33 [ 9.380102] ata2.00: qc timeout (cmd 0xef) [ 9.380112] ata2.00: failed to set xfermode (err_mask=0x4) [ 9.700093] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 19.712097] ata2.00: qc timeout (cmd 0xef) [ 19.712105] ata2.00: failed to set xfermode (err_mask=0x4) [ 19.712158] ata2: limiting SATA link speed to 1.5 Gbps [ 19.712160] ata2.00: limiting speed to UDMA/33:PIO3 [ 20.032106] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310) [ 30.040084] ata2.00: qc timeout (cmd 0xef) [ 30.040091] ata2.00: failed to set xfermode (err_mask=0x4) [ 30.040144] ata2.00: disabled [ 30.056102] ata2: hard resetting link [ 30.376108] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310) [ 30.376114] ata2: EH complete when a disc is present, dmesg has [ 3.804304] ata2: SATA max UDMA/133 irq_stat 0x00000040, cirq 219 [ 5.268599] ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ 5.270213] ata2.00: ATAPI: PIONEER DVD-RW DVRTD08, 1.00, max UDMA/33 [ 5.272217] ata2.00: configured for UDMA/33 You'll find more details at http://ubuntuforums.org/showthread.php?p=6412465#post6412465 Having read http://www.mail-archive.com/linux-ide@xxxxxxxxxxxxxxx/msg06127.html I guess it is not OK for the device to timeout in response to 0xef. Still I would like to be able to use the drive without having to insert a CD at every boot. Is there any workaround? Can't the driver just treat repeated timeouts like it would treat an abort?
That case was a bit different in that it was a CompactFlash device (which has some different rules, especially older ones), but there was also a SATA-PATA bridge chip involved (which seems quite likely the case here too since the drive reports UDMA33 maximum). This could be another case of the bridge chip being broken. Set Features - Set Transfer Mode is a mandatory command that all ATA devices must implement, and the device really can't be used properly if it's not successful (for true SATA devices it's mostly vestigial, but if there's any actual PATA involved, it's required). It's rather bizarre that having a disc inserted avoids the problem.
Is there any firmware update available for the drive? -- 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
