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SubjectRe: Hangs in 2.4.19 and 2.4.20-pre5 (IDE-related?)
On Thu, Aug 29, 2002 at 08:04:58PM -0700, Andre Hedrick wrote:
>
> Good cause then I take responsiblity for it.
>
> On Thu, 29 Aug 2002, Vojtech Pavlik wrote:
>
> > On Thu, Aug 29, 2002 at 12:37:19PM -0700, Andre Hedrick wrote:
> >
> > > On Thu, 29 Aug 2002, Meelis Roos wrote:
> > >
> > > > pcibus = 33333
> > > > 00:07.1 vendor=8086 device=7111 class=0101 irq=0 base4=f001
> > > > ----------PIIX BusMastering IDE Configuration---------------
> > > > Driver Version: 1.3
> > > > South Bridge: 28945
> > > > Revision: IDE 0x1
> > > > Highest DMA rate: UDMA33
> > > > BM-DMA base: 0xf000
> > > > PCI clock: 33.3MHz
> > > > -----------------------Primary IDE-------Secondary IDE------
> > > > Enabled: yes yes
> > > > Simplex only: no no
> > > > Cable Type: 40w 40w
> > > > -------------------drive0----drive1----drive2----drive3-----
> > > > Prefetch+Post: yes yes yes yes
> > > > Transfer Mode: PIO PIO PIO PIO
> > > > Address Setup: 90ns 90ns 90ns 90ns
> > > > Cmd Active: 360ns 360ns 360ns 360ns
> > > > Cmd Recovery: 540ns 540ns 540ns 540ns
> > > > Data Active: 90ns 90ns 90ns 90ns
> > > > Data Recovery: 30ns 30ns 90ns 30ns
> > > > Cycle Time: 120ns 120ns 180ns 120ns
> > > > Transfer Rate: 16.6MB/s 16.6MB/s 11.1MB/s 16.6MB/s
> > >
> > > That is not my work and you are on your own for that mess.
> > > That looks straight out of 2.5.30.
> >
> > Don't be so quick with shooing people away - this is the output of the
> > 'atapci' userspace program. It only reads the PCI config registers and
>
> Well if atapci is that complete then I see no reason to keep proc about.
> So if it needs to go we delete it.

I think you can drop the chipset specific /proc code. It'll simplify the
drivers a lot as well as making them smaller.

On the other hand, I'd suggest that some generic /proc code is put in
place instead of the chipset-specific one - the values that cannot be
read from PCI config registers, like:

The PIO/MMIO/(U)DMA mode (and transfer rate) the IDE driver is operating
the in. The bus speed the driver thinks is running at. Whether the IDE
driver has detected a 80 or 40 wire cable. Etc, etc. This would be very
useful, can be done by a single common routine, and most users actually
don't need the exact timings.

--
Vojtech Pavlik
SuSE Labs
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