Date: Wed, 6 May 1998 18:39:33 -0600 From: Nate Williams <nate@mt.sri.com> To: Mike Smith <mike@smith.net.au> Cc: Nate Williams <nate@mt.sri.com>, Archie Cobbs <archie@whistle.com>, stefan@promo.de (Stefan Bethke), luigi@labinfo.iet.unipi.it, freebsd-hackers@FreeBSD.ORG Subject: Re: ISA-PnP w\o BIOS support? Message-ID: <199805070039.SAA06961@mt.sri.com> In-Reply-To: <199805062212.PAA00530@antipodes.cdrom.com> References: <199805061517.JAA05337@mt.sri.com> <199805062212.PAA00530@antipodes.cdrom.com>
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> > Things is, this falls really short for non-ISA/non-PnP devices as well. > > No, it doesn't. But I may not have answered your specific qualms. > > > Think hot-swappable devices, and devices that *really* no one knows > > about? > > Yes, what about them? How about a concrete problem rather than FUD? There's no FUD. You just erased my specific examples. > > Also, devices that can use IRQ's, but don't necessarily need > > them. How do you say 'go ahead and use it', vs. 'don't bother'. > > Huh? You must specifically be talking about the resource starvation > case where the "can but don't have to" device comes up before a "must > have" device and takes the last interrupt. No, I'm talking about cases where hardware *can* use IRQ's, but don't need them. > Firstly, there aren't too many devices in the "can but don't have to" > class, so this is a pathalogical example. But it's an example of something we need to have now. (Like, if it were there, I could use it today.) Right not, to get a 'real' interrupt, you must be an ISA device. Otherwise, you've got to hope for the best. This is simply bogus. And, sysctl is a *huge* hack that's completely incapable of dealing with it. You can't tell a device to not use an interrupt via a sysctl, since by the time the syctl is active it's much too late. Nate To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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