Date: Tue, 05 Sep 2000 20:44:09 -0700 From: Peter Wemm <peter@netplex.com.au> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: obrien@FreeBSD.ORG, alpha@FreeBSD.ORG, mjacob@FreeBSD.ORG Subject: Re: what was the last patch you sent out? Message-ID: <200009060344.e863i9G48367@netplex.com.au> In-Reply-To: <14773.43042.883756.240283@grasshopper.cs.duke.edu>
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Andrew Gallatin wrote:
>
> David O'Brien writes:
> > On Tue, Sep 05, 2000 at 01:59:18PM -0400, Andrew Gallatin wrote:
> > > Does Peter have 164LX, 164SX. Or does he have a 164<flat> like Matt?
> >
> > For the record (so we know who can test what):
> >
> > Beast.freebsd.org -- PC164
> > David -- PWS600au (MX5), AS 250 4/266, DS-200 (265DP)
>
> I assume you mean "DS-20 (2x21264)" ?
>
> > Andrew -- PWS500au (GL), UP-1000, AS 200 4/166
>
> + XP1000
> + AS500 5/266
> - AS200 4/166 (its currently burried under a whole pile of junk, I'm
> trying to work up the movtivation to excavate it..)
>
> > Peter -- PC164SX
> > Wilko -- PWS600au (GL), PWS500a (MX5), AS 1200
> > JDP -- 164LX
> > jhb -- PWS500a (MX5)
> >
> >
> > Current is known to work on PWS600au(MX5), PWS500au(MX5), and PC164SX.
>
> As of yesterday's sources, -current also works on the following:
> PWS500au (GL), XP1000, AS500-5/266, UP1000
What I'd like to know is what is different about the CIA setup in the PC164
(vs PC164SX)..
Also, consider this difference:
PC164:
cia0: ALCOR/ALCOR2, pass 3
cia0: extended capabilities: 21<DWEN,BWEN>
PC164SX:
cia0: Pyxis, pass 1
cia0: extended capabilities: 1<BWEN>
And consider:
if (cia_rev >= 2 || cia_ispyxis)
cia_config = REGVAL(CIA_CSR_CNFG);
else
cia_config = 0;
..
if (alpha_implver() != ALPHA_IMPLVER_EV5
|| alpha_amask(ALPHA_AMASK_BWX)
|| !(cia_config & CNFG_BWEN)) {
..
chipset = cia_swiz_chipset;
} else {
..
chipset = cia_bwx_chipset;
}
IE: we are setting cia_bwx_chipset for all capable chipsets, including
both the ALCOR and Pyxis ones that I've seen console cut/pastes from.
While later:
if (cia_ispyxis) {
snprintf(chipset_type, sizeof(chipset_type), "pyxis");
chipset_bwx = 1;
chipset_ports = CIA_EV56_BWIO;
chipset_memory = CIA_EV56_BWMEM;
chipset_dense = CIA_PCI_DENSE;
} else {
snprintf(chipset_type, sizeof(chipset_type), "cia");
chipset_bwx = 0;
chipset_ports = CIA_PCI_SIO1;
chipset_memory = CIA_PCI_SMEM1;
chipset_dense = CIA_PCI_DENSE;
chipset_hae_mask = 7L << 29;
}
It seems to me that at one point, we are setting the Pyxis/ALCOR to use
BWX and later on we are setting BWX modes on Pyxis-only (missing out the
PC164's ALCOR chips), but we are leaving the chipset[] vector pointer
setup for BWX.
Could this possibly explain it? (ie: machine half setup for SWIZ and half
for BWX) I really do not understand the finer details of this area of the
Alphas.
Cheers,
-Peter
--
Peter Wemm - peter@FreeBSD.org; peter@yahoo-inc.com; peter@netplex.com.au
"All of this is for nothing if we don't go to the stars" - JMS/B5
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