On Mon, 25 Nov 2002, Marc Fonvieille wrote: [polled mode for sio0 and ppc0]
> But what about ppc0 ? I have to remove the IRQ line as well? > (sorry I can't test now) I don't know exactly (I rarely use it). > I also noted that lptcontrol(8) "does not" work under 4.X and 5.X. > It seems that since lpt(4) use ppbus(4), it is not possible to use > lptcontrol(8). Well maybe that question does not fit with > freebsd-current mailing list :) "lptcontrol -i" and "lptcontrol -p" work for me under -current. They presumably work because the driver sets up the interrupt for every write(2) if interrupts are enabled. This used to cause panics because a thread was created for every write and it was possible for threads to be created faster than they could exit. But everything except the thread creation and destruction seems to be necessary because the interrupt may be switched fairly dynamically between children of ppc0. I think this means that no one should want to force polled mode at the ppc0 level, and its children should have control programs like lptcontrol that permit configuring it if necessary. Bruce To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
