Date: Wed, 24 Mar 1999 08:21:11 +0800 (CST) From: Michael Robinson <robinson@netrinsics.com> To: sean@stat.Duke.EDU Cc: freebsd-mobile@freebsd.org Subject: Re: Force pccard controller to specific irq Message-ID: <199903240021.IAA58195@netrinsics.com> In-Reply-To: <19990323131738.B2058@stat.Duke.EDU>
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"Sean O'Connell" <sean@stat.Duke.EDU> writes:
>I have been continually frustrated by the way the IRQ is being
>selected for the PCCard controller. It is grabbing IRQ3
>regardless of whether I put something into /boot/loader.rc or not.
>Is there a way to hardcode IRQ10 into the kernel config file or
>the /sys/pccard code?
To specify the IRQ for the PCIC, put the following in your boot/loader.rc file:
set machdep.pccard.pcic.irq=10
To enable a specific interrupt that you "know" is available and needed for
a PC-CARD (for example, IRQ9, that my ethernet card needs), add something
like this to /sys/pccard/pccard.c:
+ slt->ctrl->irqs |= 0x200;
+ desc->irqmask |= 0x200;
if ((slt->ctrl->irqs & desc->irqmask) == 0)
If the IRQ actually *is* being used for something, the request will fail
further down in the code anyway.
The IRQ configuration commands in /etc/pccard.conf are almost completely
non-functional.
Hopefully a better compromise between architectural purity and real-world
necessities will be possible under the pending "new bus" code.
-Michael Robinson
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