On Monday 19 February 2007 12:20, M. Warner Losh wrote: > In message: <[EMAIL PROTECTED]> > Daniel Rudy <[EMAIL PROTECTED]> writes: > : At about the time of 2/15/2007 12:14 AM, Peter Jeremy stated the following: > : > On 2007-Feb-14 00:27:36 -0800, Daniel Rudy <[EMAIL PROTECTED]> wrote: > : >> Changing the slot did help. I moved it from slot 3 to slot 1. But, now > : >> it's dropping characters with a port speed of 57600, and I am also > : >> getting irq overrun errors from the kernel too now. > : > > : > This is not good. Interrupt latency is a bit of a sore point but the > : > FIFO trigger level is 8 bytes so getting SILO overflows implies a > : > latency of >1.38msec. Does sio4 report as [FAST] in the dmesg? > : > : No, it does not report as fast. I changed the /boot/device.hints file > : and commented out all the sio devices, since all the serial ports on the > : system are disabled anyways. This is the only one that is up and running. > : > : Here is the verbose dmesg from a reboot that I did just now: > : > : sio0: Reserved 0x100 bytes for rid 0x14 type 4 at 0xd400 > : sio0: configured irq 17 not in bitmap of probed irqs 0 > : sio0: port may not be enabled > : sio0: irq maps: 0xcb9 0xcb9 0xcb9 0xcb9 > : sio0: <Lucent kermit based PCI Modem> port > : 0xd400-0xd4ff,0xd800-0xd8ff,0xdc00-0xdc07 mem 0xeb105000-0xeb1050ff > : irq 17 at device 9.0 on pci0 > : sio0: type 16550A > : > : What I don't understand is why it keeps saying that "configured irq 17 > : not in bitmap of probed irqs 0"... What exactly does that mean? > > IRQ 17 was configured for the sio device. The sio probe provokes an > interrupt and then reads the interrupt mask. When it read it, the > mask was '0' meaning nothing was interrupting...
Yeah, but the mask is meaningless for non-ISA IRQs as the mask is the mask from the 8259As, but IRQ 17 isn't routed via those, so sio complains about a missing interrupt even though it is working fine. Also, in 6.2, SIO should always be able to probe a FAST since 6.1 and later have the changes that let FAST and non-FAST share IRQs. -- John Baldwin _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
