Messages in this thread | | | Date | Sat, 18 Jan 2003 02:10:31 -0500 (EST) | From | Scott Murray <> | Subject | Re: [Pcihpd-discuss] Re: [BUG][2.5]deadlock on cpci hot insert |
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On 17 Jan 2003, Rusty Lynch wrote:
[snip] > I actually have two ZT5550C boards each using a ZT96073 mezzanine board > (which contains a hard drive a floppy) and each with ZT4804/ZT4802 rear > panel transition boards. > > I do not see anything in my BIOS (v5.15) about "High Availability" options, > but looking through the ZT5550 manual on the pt website, I noticed that > all ZT550 models before revision 'D' only have active-standby mode, so I > wonder if the bit we are looking at was only used in newer versions of the > ZT5550.
Hmm, based on the research I've done, that does seem to be the case.
> For what it is worth, I messed around with all the possible combinations > of system master and peripheral boards that I had, and noted what HCF_HCS > was in system log. [snip]
That's very useful information, thank you!
> Like I mentioned before, I suspect that the last three bits are not > implemented on older ZT5550 boards (pre 'D' versions). In the docs > you have access too, is there reference to a register we could find > out which version of 5550 this board is for? That would make this > easy to solve.
I've dug through the rss-1.0-1 tarball released by Ziatech/Intel, and have found the init code that handles setup for the different versions of the host controller. Once I decipher it a bit further, I should be able to handle the two board versions. Note, however, that my plan is to disable the driver on standby mode boards, since I'm not really in a position to work on a RSS capable driver (no hardware or time on my part, and SOMA isn't interested in RSS).
> hmm... if HCS_RH_STATE is talking about if the other system board is > active or standby, then we could assume both busses need to be added > if HCS_RH_STATE is not set. That is unless there such thing as being able to > completely turn off one of the busses.
The docs I have from PT are pretty much specific to the D version of the card, so I'll try and decipher the differing bits from the rss-1.0-1 code.
> BTW, I'm going to be at the Linux World show in NY next week, so I > will not be able to try anything new for a week.
I'll do some more experimenting here and try to come up with a patch sometime next week that should work with your ZT5550C boards.
Scott
-- Scott Murray SOMA Networks, Inc. Toronto, Ontario e-mail: scottm@somanetworks.com
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