svn commit: r297501 - head/usr.sbin/pciconf

[Oliver Pinter]

On Monday, April 4, 2016, John Baldwin <jhb at freebsd.org> wrote:

> On Saturday, April 02, 2016 11:49:53 AM Oliver Pinter wrote:
> > > +       if (cap & PCIEM_SLOT_CAP_HPS)
> > > +               printf(" surprise");
> >
> >
> > What is this surprise string or state? Or is this a forgotten debug
> string?
>
> It's an actual thing in the spec.  "Surprise" insertion/removal means that
> devices
> can be hotplugged without requiring notification to the OS ahead of time.
> The
> expresscard slots in my x220 actually report this:



Okay, thanks for the clarification.


>
> pcib3 at pci0:0:28:3:      class=0x060400 card=0x21da17aa chip=0x1c168086
> rev=0xb4 hdr=0x01
>     cap 10[40] = PCI-Express 2 root port max data 128(128)
>                  link x0(x1) speed 0.0(5.0) ASPM L0s/L1(L0s/L1)
>                  slot 3 power limit 100 mW HotPlug(empty) surprise
>     cap 05[80] = MSI supports 1 message
>     cap 0d[90] = PCI Bridge card=0x21da17aa
>     cap 01[a0] = powerspec 2  supports D0 D3  current D0
>
> and after inserting a card:
>
> pcib3 at pci0:0:28:3:      class=0x060400 card=0x21da17aa chip=0x1c168086
> rev=0xb4 hdr=0x01
>     cap 10[40] = PCI-Express 2 root port max data 128(128)
>                  link x1(x1) speed 2.5(5.0) ASPM disabled(L0s/L1)
>                  slot 3 power limit 100 mW HotPlug(present) surprise
>     cap 05[80] = MSI supports 1 message
>     cap 0d[90] = PCI Bridge card=0x21da17aa
>     cap 01[a0] = powerspec 2  supports D0 D3  current D0
>
> --
> John Baldwin
>