On Fri, Jun 08, 2007 at 04:38:04PM +0100, Alan Cox wrote:
> > See a URL I posted earlier in this thread. With dumb ATAPI devices we
> > actually have to wait a bit for BSY to be asserted. Not only at reset,
> > but also for every command
>
> 400nS and the current code correctly accounts for it.
No, _far_ longer than 400nS. 2ms minimum by the spec, but,
ATADRVR. blackmagic.html and googling around shows plenty of ATAPI
devices that don't get their shit together for 50-100ms.
The BIOS source I'm reviewing right now waits 50ms, after SRST.
Jeff
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