Hello Tejun,
I recently purchased a Norco DS-1220[1] 12-bay SATA enclosure from
Newegg[2]. It comes with a sil3124-based PCI/X card and uses sil3726
port multipliers. Ater unsuccesfully wrestling with buggy proprietry
drivers included in the box, I found your libata-tj-stable[3] patches
and applied them to 2.6.16.19. With the minor fix below, it seems to
be working wonderfully. Thank you!!
The enclosure takes 4 SATA connections. Bays appear connected like this:
ata1.00 = bay 5
ata1.01-04 = bay 1-4
ata2.00 = bay 10
ata2.01-04 = bay 6-9
ata3.00 = bay 11
ata4.00 = bay 12
Your patches only detected the first 4 out of 5 ports on each PM.
To fix this, I made this (admittedly naïve) change:
--- drivers/scsi/libata-pm.orig 2006-06-11 21:01:28.000000000 -0400
+++ drivers/scsi/libata-pm.c 2006-06-11 21:03:57.000000000 -0400
@@ -324,7 +324,7 @@
* it requires hardreset to resume PM links.
*/
if (vendor == 0x1095 && devid == 0x4726) {
- *nr_ports -= 2;
+ *nr_ports -= 1;
*link_flags |= ATA_LFLAG_HRST_TO_RESUME;
}
}
The patch is also available here[4], along with dmesg and lspci output.
With this, all 12 bays are working fine. I also did some limited
hotplug testing and ran into no problems at all. Again, thank you!
-jim
[1] http://www.norcotek.com/news.php?news_id=24
[2] http://www.newegg.com/Product/Product.asp?Item=N82E16816133001
[3] http://home-tj.org/wiki/index.php/Libata-tj-stable
[4] http://jim.sh/~jim/libata/
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