On Thursday 22 April 2010 6:05:04 am Maxim Sobolev wrote: > Maxim Sobolev wrote: > > There is already a code to detect non-existing AT keyboard and avoid > > attaching atkbd to it. The code is i386-only at the moment, I am trying > > to figure out how to modify it so that it works on amd64 as well. > > Looks like this huge delay is caused by the inb() being astonishingly > slow, which is not factored by the timeout routines. Reading keyboard > status port once takes about 0.003s! I am not sure if it's common > behaviour of the platform, or something specific to this particular > model. Do you know by any chance?
Well, many BIOSes trigger an SMI# when doing inb/outb to the keyboard ports so they can emulate a PS/2 keyboard when a USB keyboard is inserted. Do you have any BIOS options related to the USB legacy compat? I know of the Nehalem systems I've seen they have a separate option for controlling port 60/64 emulation which we leave disabled by default. -- John Baldwin _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
