Date: Tue, 18 Jan 2000 14:19:04 -0700 From: Warner Losh <imp@village.org> To: Mike Smith <msmith@FreeBSD.ORG> Cc: Tatsumi Hosokawa <hosokawa@itc.keio.ac.jp>, mobile@FreeBSD.ORG Subject: Re: Working pcic polling mode patch (Re: Polling mode of pcic as default?) Message-ID: <200001182119.OAA19882@harmony.village.org> In-Reply-To: Your message of "Tue, 18 Jan 2000 13:22:21 PST." <200001182122.NAA01429@mass.cdrom.com> References: <200001182122.NAA01429@mass.cdrom.com>
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In message <200001182122.NAA01429@mass.cdrom.com> Mike Smith writes: : Using an environment variable is just a placeholder for userconfig : becoming a real hint editor; making the pcic IRQ settable inside : userconfig would require a heap more work than anyone wants to spend. Really? Tell that to hosokawa-san who just added the ability to do that. In 3.x it was impossible to do this, but now that pcic lives inside the config system rather than outside of it it makes sense to use it. The only thing that userconfig can't do is to select polling vs non-polling by overloading the irq 0 to mean use polling. And that is easily handled by a flag (which I was thinking of adding anyway). : > Also, this rusian roulette of picking an IRQ is unwise. It breaks too : > many times. You must hardwire the IRQ, or use polling. Examining the : > machine is too unreliable to work. : : Er, hardwiring is just persistent state based on examining the machine. : This is an argument for a polling-only approach. Or at least a polling default approach. IT would make some things much easier. Warner To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-mobile" in the body of the message
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