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* No NCQ support on X61s Ultrabay?  (Intel ICH8 SATA controller question)
@ 2009-04-30  2:07 Theodore Ts'o
  2009-04-30  2:19 ` Tejun Heo
  2009-04-30  2:27 ` Jeff Garzik
  0 siblings, 2 replies; 22+ messages in thread
From: Theodore Ts'o @ 2009-04-30  2:07 UTC (permalink / raw)
  To: linux-kernel; +Cc: Matthew Wilcox

I was taking a look at why I can't get NCQ working on the Ultrabay drive
on the X61s Thinkpad (which is a big deal if you're using the X25-M
SSD):

[ 4563.614247] ata4.00: 390721968 sectors, multi 16: LBA48 NCQ (depth 0/32)
                                                                ^^^^^^^

which as near as I can tell is because ATA_FLAG_NCQ isn't set in struct
ata_port->flag.  This looks like it should be set to ata_piix.c if the
controller supports NCQ --- but ata_piix.c doesn't set ATA_FLAG_NCQ at
all.  However, this web page:

	http://www.intel.com/support/chipsets/imst/sb/CS-012304.htm

Seems to imply the 82801HBM/HEM SATA controller from the ICH8M/ICHM8-E
supports AHCI and NCQ, and this is the controller which is in the X61s
laptop.

So I wonder if it's safe to simply add ATA_FLAG_NCQ to ata_piix.c or
not?  Can someone who's more familiar with Intel's ICH8 SATA controller
comment on whether this would be a safe thing to do?

Thanks,

						- Ted

^ permalink raw reply	[flat|nested] 22+ messages in thread

end of thread, other threads:[~2009-05-03 23:17 UTC | newest]

Thread overview: 22+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2009-04-30  2:07 No NCQ support on X61s Ultrabay? (Intel ICH8 SATA controller question) Theodore Ts'o
2009-04-30  2:19 ` Tejun Heo
2009-04-30  2:27 ` Jeff Garzik
2009-04-30  7:33   ` Alex Buell
2009-04-30  7:45     ` Tejun Heo
2009-04-30 13:47       ` Alan Cox
2009-04-30 15:35         ` Matthew Wilcox
2009-04-30 15:47           ` Matthew Garrett
2009-05-01  1:49             ` Robert Hancock
2009-05-03  2:07               ` Tejun Heo
2009-05-03 20:50                 ` Robert Hancock
2009-05-03 22:35                   ` Jason Riedy
2009-04-30 11:34     ` Theodore Tso
2009-04-30 11:38       ` Theodore Tso
2009-05-01  1:51         ` Robert Hancock
2009-05-01  2:51           ` Theodore Tso
2009-05-01  4:21             ` Robert Hancock
2009-05-01 11:35               ` Matthew Wilcox
2009-05-01 13:14                 ` Theodore Tso
2009-05-01 13:59                   ` Matthew Garrett
2009-05-01 14:09                   ` Matthew Wilcox
2009-04-30 15:42       ` Henrique de Moraes Holschuh

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