Date: Thu, 04 May 2006 06:51:45 +0900 From: takawata@jp.freebsd.org To: "M. Warner Losh" <imp@bsdimp.com> Cc: freebsd-current@freebsd.org Subject: Re: lpt0 disappear (ppc related) Message-ID: <200605032151.k43Lpjg2009960@ns.init-main.com> In-Reply-To: Your message of "Mon, 01 May 2006 22:27:43 CST." <20060501.222743.32503989.imp@bsdimp.com>
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In message <20060501.222743.32503989.imp@bsdimp.com>, "M. Warner Losh" さんいわ く: >In message: <200605020815.31012.doconnor@gsoft.com.au> > "Daniel O'Connor" <doconnor@gsoft.com.au> writes: >: On Tuesday 02 May 2006 01:23, M. Warner Losh wrote: >: > : However you wouldn't expect that using it as a module would result in >: > : reduced functionality. (The same as how you wouldn't expect compiling >: > : something into your kernel would result in reduced functionality) >: > >: > At the same time, you'd expect it to behave like every other 'bus' in >: > the tree. We omit the attachments for drivers to that bus when the >: > kernel is built w/o that bus. This is why if you have, say, ep in the >: > kernel, but pccard loaded as a module, the 3c589 you just inserted >: > into the pccard slot won't work. >: > >: > It is a minor imperfection in the config system that no one has taken >: > on as a Problem To Solve. Solving it turns out to be somewhat tricky. >: >: Hmm, but I load acpi as a module and get acpi attachments.. (for sio and ppc >) >: >: <shrugs> it's black magic to me anyway :) >: >: I didn't mean to belittle Marcel's work, I was just suprised that it would >: cause a functionality loss like that. > >I think it just points out a weakness in the underlying system... Is it time to hide isa_dma interface under isa_if ? All acpi capable archictectures links isa_if.c, I think.
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