On Wed, 15 Nov 2006, Scott Long wrote:
[EMAIL PROTECTED] wrote:
see http://people.freebsd.org/~mjacob for 2 bootverbose files.
Ah, it looks like the MPT chips support 8 messages. I think that
John's patch assumes only 1 message for it.
No, John's patch will only enable MSI for a count of one.
The PCI cards I have that support MSI are:
AMD:
QLogic 6312 (MSI 8)
LSI-Logic 1030 (MSI 1)
LSI-Logic 1030 (MSI 1)
[ STUPID ME- The FC929 doesn't have MSI ]
Broadcom NetXtreme (MSI 8)
Broadcom NetXtreme (MSI 8)
SuperMicro
LSI-Logic 4Gb (MSI-1 MSI-X 1)
LSI-Logic 4Gb (MSI-1 MSI-X 1)
LSI-Logic SAS (MSI-1 MSI-X 1)
QLogic 2422 4Gb (MSI 8)
QLogic 2422 4Gb (MSI 8)
em (MSI 1)
I would guess you were looking at the one of the other devs.
For some devices,
requesting 1 message when N are available will work, but it really is
undefined behaviour and is dependent on the device to DTRT. So in your
case, some of the MPT chips handled it well, some did not. Just out of
curiosity, do you have any MPT docs that describe its MSI capabilities?
In any case, it should probably be disabled in the MPT driver until we
have a better understanding of how it works there.
For your if_em problem, I'm not seeing what the problem is. It looks
like em0 was successful at getting an IP address over DHCP, so I would
assume that interrupts are working on it.
Nope. That's why I included the change to disable msi in the boot
verbose (there are two boot sessions there). You can have a *mostly*
functional ethernet w/o interrupts functioning- you just get watchdog
resets.
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