Re: Changes for IDE on PREP Hardware

On Tue, Jan 04, 2000 at 10:24:21PM -0700, Cort Dougan wrote:

} Attached is a patch which allows to work Motorola PREP hardware (like
} Blackhawk) to use IDE devices (disk and cdrom). The patch tries to
} selectively introduce the changes for the Motorola hardware only.
} IBM's can stay with their irq 13 for IDE and with their preferred
} method of non swapped data stream. I have no chance to test on IBM.

How would this work if both irqs arrive at the same time?

Johnnie, Matt - can you test this out on your systems?

Alois' IDE patch is a subset of the functionality that has made it into
2.2.14 from our IDE patch.  This patch doesn't account for the secondary
IDE controller on irq 15 among other things.  I'm attaching our full
patch as submitted versus 2.2.14pre4 so everybody can see the code I'm
talking about.  Note that changes to ide-pci.c, ide-probe.c, and sl82c105.c
in the patch got dropped and Alan said "maybe for 2.2.15".  The full patch
was tested on every board MCG has made with IDE. 

As for the 8259 patch, I think it may help the problem but will 
probably cause some bad situations disabling interrupts like that.  I
will test it out and see if it can be used or made better so we can
get these PReP 8259 problems behind us.

--
Matt Porter
mmporter@home.com
This is Linux Country. On a quiet night, you can hear Windows reboot.