Part 2: Re: 2.5.31 boot failure on pdc20267

Andre Hedrick (andre@linux-ide.org)
Fri, 16 Aug 2002 03:23:21 -0700 (PDT)


Petr,

Try reading the entire document first before commenting and showing why
people should not believe you.

The author went through great lengths to explain and capture what
SFF-8038i defined. The object is to show the difference.

Now carefully look and see that BAR4 in d1510 is not the same as
BAR 4 for SFF-8038i.

Regards,

Andre Hedrick
LAD Storage Consulting Group

On Fri, 16 Aug 2002, Petr Vandrovec wrote:

> On 16 Aug 02 at 2:27, Andre Hedrick wrote:
> > On Fri, 16 Aug 2002, Petr Vandrovec wrote:
> >
> > > Yes. If you'll look at d1510r0c.pdf from ATA guys, you'll find that
> >
> > BUZZIT!
> >
> > That is an totally new transport protocol and if you research the pci
> > device class you would know that it has nothing to do with the problem.
> > If you guys are playing with ADMA on DMA Hosts, oh my!
>
> No. It just reveals that you have no idea what you are talking about.
> It was proven when you talked about EDD, and now it is proven again.
> Table 3 of rev 0f, page 11:
>
>
> Byte offset Description Attribute Value
> 09h Programming Interface Code | See Table 4 | Defined in table 1
> 0Ah Subclass code Read-only 01h - IDE
> 0Bh Base class code Read-only 01h - Mass Storage
>
> and to your surprise, my IDE interface is:
> 00:1f.1 Class 0101: 8086:244b (rev 05) (prog-if 80 [Master])
> so if this device should not have Class 0101, then there is certainly
> some problem somewhere.
>
> > The context of what is the EOT between the two HOST protocols has no
> > meaning.
>
> Yes? Then please tell me what chapter 6, PCI Compatibility and Native
> Bus Master Adapters, pages 22-28 of rev 0c, talks about...
>
> In rev 0f it is chapter 5, same name, PDF pages 19-26, document pages 10-17.
> EOT is back here in this revision, so actually current standard is OK,
> and Intel is misbehaving (or maybe just "extending" standard?).
>
> And if you insist that this chapter does not describe UDMA busmastering
> programming interface, then please point me to the correct document.
> There is no other document with simillar name on the T13 web.
> Petr Vandrovec
> vandrove@vc.cvut.cz
>
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