From owner-freebsd-current Fri Jun 4 4:12:19 1999 Delivered-To: freebsd-current@freebsd.org Received: from titan.metropolitan.at (mail.metropolitan.at [195.212.98.131]) by hub.freebsd.org (Postfix) with ESMTP id 779051595A for ; Fri, 4 Jun 1999 04:12:09 -0700 (PDT) (envelope-from mladavac@metropolitan.at) Received: by TITAN with Internet Mail Service (5.0.1458.49) id ; Fri, 4 Jun 1999 13:14:58 +0200 Message-ID: <55586E7391ACD211B9730000C110027617963A@r-lmh-wi-100.corpnet.at> From: Ladavac Marino To: 'Garrett Wollman' , Bruce Evans Cc: dfr@nlsystems.com, current@FreeBSD.ORG, newton@atdot.dotat.org Subject: RE: IRQ sharing with newbus Date: Fri, 4 Jun 1999 13:09:41 +0200 X-Priority: 3 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.0.1458.49) Content-Type: text/plain Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > -----Original Message----- > From: Garrett Wollman [SMTP:wollman@khavrinen.lcs.mit.edu] > Sent: Wednesday, June 02, 1999 9:13 PM > To: Bruce Evans > Cc: dfr@nlsystems.com; wollman@khavrinen.lcs.mit.edu; > current@FreeBSD.ORG; newton@atdot.dotat.org > Subject: Re: IRQ sharing with newbus > > < > said: > > >> But the sio non-multiport stuff should be able to use RF_TIMESHARE. > -- > >> If I'm not using my serial port, I should be able to use my > >> infrared.... > > > Preemptive timesharing would be hard to implement reasonably for > irqs. > > A uniform timeslice would have to be 86 usec to work properly for > > unbuffered sio devices at 115200 bps. > > You're talking intervals about six orders of magnitude smaller than I > am. [ML] If I understand you correctly, you want to resource track the IRQ's so if one device that uses one particular IRQ is active, another one cannot be activated? Example: I have a modem on sio1 and digicam on sio3 (both on IRQ3). I can either use my modem or download the photos, but not both at the same time. That would be nice. I don't known whether this is already supported as I don't have sio3 :) (I don't have sio1 either :) /Marino > -GAWollman > > -- > Garrett A. Wollman | O Siem / We are all family / O Siem / We're all > the same > wollman@lcs.mit.edu | O Siem / The fires of freedom > Opinions not those of| Dance in the burning flame > MIT, LCS, CRS, or NSA| - Susan Aglukark and Chad > Irschick > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-current" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message