On Wed, Jun 18, 2008 at 4:59 AM, Jeff Garzik <jeff@xxxxxxxxxx> wrote:
> I really think it's more generalized ATAPI brokenness, perhaps specific to
> AHCI.
>
> I'm going to allocate some time to dig into this, if Tejun doesn't find the
> problem, because it's not just limited to a few models. We've been getting
> _tons_ of timeout bug reports, and in fact, my own AHCI-based workstation
> cannot rip audio CDs at all:
>
...maybe the following is related?
I have a problem report against an ICH9R platform in ahci mode. The
customer is trying to send 'set streaming' (0xb6) ATAPI commands to an
optical drive. They report that it works fine with sata_mv, but the
same test fails on ahci.
ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
ata2.00: ATAPI: HL-DT-ST BD-RE GBW-H20L, 8.B8, max UDMA/100
ata2.00: configured for UDMA/100
scsi 1:0:0:0: CD-ROM HL-DT-ST BD-RE GBW-H20L 8.B8 PQ: 0 ANSI: 5
sr0: scsi3-mmc drive: 40x/40x writer dvd-ram cd/rw xa/form2 cdda tray
Uniform CD-ROM driver Revision: 3.20
sr 1:0:0:0: Attached scsi CD-ROM sr0
sr 1:0:0:0: Attached scsi generic sg1 type 5
[..]
ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
ata2.00: cmd a0/00:00:00:1c:00/00:00:00:00:00/a0 tag 0 pio 28 out
cdb b6 00 00 00 00 1c 00 00 00 00 00 00 00 00 00 00
res 40/00:03:00:00:00/00:00:00:00:00/a0 Emask 0x4 (timeout)
ata2.00: status: { DRDY }
ata2: hard resetting link
ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 310)
ata2.00: configured for UDMA/100
ata2: EH complete
I'll try to get a reproducer, in the meantime any ideas?
Thanks,
Dan
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