Bug 5789

Summary:	ATAPI isn't working on sata-via
Product:	IO/Storage	Reporter:	Aaron Gyes (floam)
Component:	Serial ATA	Assignee:	Jeff Garzik (jgarzik)
Status:	CLOSED PATCH_ALREADY_AVAILABLE
Severity:	normal
Priority:	P2
Hardware:	i386
OS:	Linux
Kernel Version:	2.6.15-rc7	Subsystem:
Regression:	---	Bisected commit-id:
Attachments:	dmesg

Description Aaron Gyes 2005-12-27 22:23:46 UTC

According to the status report [1], ATAPI should work on every device that
supports it as of 2.6.15. I get some nasty bits in dmesg and it does not work.
I've got a Plextor PX-716SA and am using sata_via.

[1] http://linux.yyz.us/sata/software-status.html#atapi

Will attach a dmesg.

Comment 1 Aaron Gyes 2005-12-27 22:24:13 UTC

Created attachment 6894 [details]
dmesg

Comment 2 Aaron Gyes 2005-12-27 22:25:07 UTC

This was previously being worked on at the Ubuntu bugzilla:
http://bugzilla.ubuntu.com/show_bug.cgi?id=21515

Comment 3 Ben Collins 2005-12-28 08:45:26 UTC

Probably best if you try a stock 2.6.15-rc7 kernel if possible. I'm sure Jeff
wants to make sure that nothing in the Ubuntu kernel is causing this (although
we are pretty much stock in the libata code department, it always helps).

Comment 4 Aaron Gyes 2005-12-29 23:18:19 UTC

I've built my own 2.6.15-rc7 kernel and can confirm that the issue persists, in
the same manner.

Comment 5 Aaron Gyes 2006-01-27 22:42:46 UTC

Hi, I updated to 2.6.16-rc1-mm3 and the device appears to be working. I seem to
be getting some bad burns and google tells me that I may want to disable DMA for
the drive. How do I do this without hacking at the kernel source?

hdparm:
/dev/scd0:
 setting using_dma to 0 (off)
 HDIO_SET_DMA failed: Function not implemented

blktool:
HDIO_SET_DMA: Function not implemented