Is there any jumper there?
YH
-----Original Message----- From: linuxbios-bounces@linuxbios.org [mailto:linuxbios-bounces@linuxbios.org] On Behalf Of mcqmcqmcq@fastmail.fm Sent: Friday, February 02, 2007 12:54 PM To: linuxbios@linuxbios.org Subject: [LinuxBIOS] DK8-HTX: 8131 A-bus running slow
Guys,
Once my DK8-HTX is up and running in Linux, I observe that the 8131 is programmed thusly (full regdump and my cute little utility attached):
/proc/bus/pci/00/0b.0: AMD 8131 PCI-X Tunnel PCI-X Bridge 0x40 PCI-X Miscellaneous Register 1-1 Conentional PCI mode frequency RW 0 0 33 MHz 0xa0 PCI-X Secondary Status Register 24-22 Secondary clock frequency R 0 3 133 MHz PCI-X
/proc/bus/pci/00/0a.0: AMD 8131 PCI-X Tunnel PCI-X Bridge 0x40 PCI-X Miscellaneous Register 1-1 Conentional PCI mode frequency RW 0 1 66 Mhz 0xa0 PCI-X Secondary Status Register 24-22 Secondary clock frequency R 0 0 conventional PCI
In particular, the A-bus 0a.0 is massively horribly slow (50MB/s to my RAID card as opposed to 350MB/s in the 0b.0 slot). I only see one speed line during LB bootup and would expect two (one for each bus):
Capability: 0x07 @ 0xa0 PCI: 03: 133MHz PCI-X
So my theory is that the A-bus is just never getting configued at all (nobody who uses LB does I/O, right? ;-). Can anybody confirm or deny this theory, and possibly point me toward what I might do to fix it?
As an aside, I'm still working from the r2520 I was ages ago. YH, you were once going to look into repeating the hangs I was seeing with a Pathscale HTX IB card installed (during HT reset in iwill/dk8_htx/cache_as_ram_auto.c) -- did that ever go anywhere? Once I get this sucker fully tested, I'll summarize what I've done to get it there and compare to svn head for you guys' continued entertainment.
Thanks, y'all,
-mcq