On 16.03.2011 15:51, Bob Willcox wrote:
This change has broken SATA disk support on my Intel Atom D525 ITX system. By
reverting this change 8.2-STABLE works again on this system.
My 'uname -a' output is:
FreeBSD maul.immure.com 8.2-STABLE FreeBSD 8.2-STABLE #6: Wed Mar 16 08:15:43
CDT 2011 b...@maul.immure.com:/usr/obj/usr/src/sys/MAUL amd64
When booting the system I get tons of these messages:
Mar 16 07:38:19 maul kernel: ad4: WARNING - SETFEATURES ENABLE RCACHE requeued
due to channel reset
Mar 16 07:38:19 maul kernel: ad4: interrupt on idle channel ignored
As I can see, it means that channel has some active request, but it is
in IDLE state. It is strange, but I won't be surprised much if it is the
result of some locking problem in ata(4) in non-CAM mode.
repeated over and over, and then lots of these:
Mar 16 07:38:21 maul kernel: ad4: WARNING - READ_DMA48 requeued due to channel
reset LBA=617964479
Mar 16 07:38:21 maul kernel: ata2: FAILURE - already active DMA on this device
Mar 16 07:38:21 maul kernel: ata2: setting up DMA failed
for different LBA values.
As one might expect, I then start seeing I/O errors on the disk and programs
failing
I've attached the 'pciconf -lv' output.
Send me please full verbose log, if you can save it. I am especially
interested in place around first errors.
You may try to build kernel with `options ATA_CAM` to see if it helps.
I've mostly tested this patch in that mode.
On Sat, Feb 05, 2011 at 09:34:27PM +0000, Alexander Motin wrote:
Author: mav
Date: Sat Feb 5 21:34:26 2011
New Revision: 218347
URL: http://svn.freebsd.org/changeset/base/218347
Log:
MFC r217774:
ICH7 SATA controller in legacy mode can provide access to SATA registers
via AHCI-like memory resource at BAR(5). Use it if BIOS was so kind to
allocate memory for that BAR. This allows hot-plug support and connection
speed reporting.
--
Alexander Motin
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