Re: Issues with SIS 964 chipset on SATA

[Jeff Garzik <jgarzik@pobox.com>]

Gary Poppitz wrote:
> We tracked down a problem with the 964 chipset with a 0x180 ID code that 
> may save someone on the list some time.
> 
> The chip will only transfer multiples of 4 bytes. Anything else will 
> cause it to hang.

Interesting, either ULi or SiS set me a needs-to-be-cleaned-up-a-lot fix 
for this.

SATA transport is dword-based, so this is not surprising.

For the SIS (or ULi, I forget) controller, and perhaps others, a 
workaround needs to be applied.  Suggestions/patches welcome.

We may want to guarantee _DMA_ of 4-byte-aligned chunks, but still only 
reflect the true amount in ATAPI CDB.

	Jeff