RE: [SiS IDE patch] various fixes

["Marcin Wiacek" <Marcin@MWiacek.com>]

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Hi,

> here's a patch against 2.4.21-rc2-ac1 (applies cleanly on 2.4.21-rc2 
> too) which brings the following to the
> SiS IDE driver :
> - support for SiS655,
> - support for SiS630S/ET UDMA5 mode,
> - corrected /proc/ide/sis output for ATA133 chipsets (drives' 
> positions 
> were swapped),
> - use of pci_read_config instead of direct pci poking for 
> SiS962+ detection,
> I don't have the hardware for testing any of these changes, so SiS 
> owners, please test and report if you :
> - use an ATA133 chipset,
> - use a SiS630 (original, or SiS630S/ET).

I wanted to check if very carefully (Sis 655). DMA seems to be enabled
for HDD. But still there are some problems OR with 2.4.21 at all (I
quess something wrong generally in IDE support) OR still with Sis
driver. Why ? It seems, that DMA is NOT enabled for DVD and CDRW. I hear
it - they work very slow. Also hdparm shows errors, when get info about
them. In attachments examples.

Also there are some problems with Silicon Image driver (see
"DriveReadySeekCompleteError" in syslog). Because of it rather there is
problem with 2.4.21.

What can be done with it ? (both with enabling DMA for non HDD devices
and errors). If any of developers need something, please tell me.

Pozdrowienia/Best Regards
-- 
Marcin Wiacek (www.mwiacek.com marcin@mwiacek.com)

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