ath0: could not map interrupt (again?)

[Tim Chase]

On 2018-05-03 17:54, Oleksandr Tymoshenko wrote:
> Tim Chase (freebsd at tim.thechases.com) wrote:
> > If it makes any difference, booting OpenBSD 6.3 on the machine
> > says they're both successfully on INT 17 (the ath0/athn0 works
> > there)
> > 
> > ppb0 at pci0 dev 28 function 0 "Intel SCH PCIE" rev 0x07: apic 2
> > int 17 ...
> > athn0 at pci2 dev 0 function 0 "Atheros AR9281" rev 0x01: apic 2
> > int 17 athn0: AR9280 rev 2 (2T2R), ROM rev 22, address
> > 00:24:d2:b3:8c:b4
> > 
> > so it looks like the interrupt *can* be shared, it just appears
> > that FreeBSD is doing something peculiar with it.  
> 
> It looks like PCI bridge allocates interupt without RF_SHAREABLE
> (see dev/pci/pci_pci.c, pcib_alloc_pcie_irq). Could you test
> this patch [1]? I am not sure if non-shareable IRQs for PCI/PCI
> bridge is a design decision or it's just that nobody has hit this
> problem before.
> 
> [1]
> https://people.freebsd.org/~gonzo/patches/pci_pci-shareable-irq.diff

Updated to head, applied the patch and am building world/kernel now.
With this underpowered machine, I suspect it may take a while.  Just
wanted to let you know your suggestion didn't drop into the void
ignored.

-tim