Use the normal interrupt handler (npx_intr()) instead of a special
probe-time interrupt handler, although this causes problems due to
the bus_teardown_intr() not actually even tearing down the interrupt
(these problems were avoided by doing interrupt attachment for the
special interrupt handler directly). Fixed minor bitrot in comments.
The reason for the npxprobe()/npxprobe1() split mostly went away at
about the same time it was made (in 1992 or 1993 just before the
beginning of history). 386BSD ran all probes with interrupts completely
masked, and I didn't want to disturb this when I added an irq probe
to npxprobe(). An irq (not necessarily npx) must be acked for at least
external npx's to take the cpu out of the wait state that it enters
when an npx error occurs, so the probe must be done with a suitable
irq unmasked. npxprobe() went to great lengths to unmask precisely
the npx irq.
Running probes with all interrupts masked was never really needed in
FreeBSD, since FreeBSD always masked interrupts well enough using
splhigh(), but it wasn't until rev.1.48 (1995/12/12) of autoconf.c
that all probes were run with CPU interrupts enabled. This permits
npxprobe() to probe its irq using normal interrupt resources. Note
that most drivers still can't depend on this. It depends on the
interrupt handler being fast and the irq not being shared.
lost when the buggy code goes away completely:
- don't assume that the npx irq number is >= 8. Rev.1.73 only reversed
part of the hard-coding of it to 13 in rev.1.66.
- backed out the part of rev.1.84 that added a highly confused comment
about an enable_intr() being "highly bogus". The whole reason for
existence of npxprobe() (separate from the main probe, npxprobe1())
is to handle the complications to make this enable_intr() safe.
- backed out the part of rev.1.94 that modified npxprobe(). It mainly
broke the enable_intr() to restore_intr(). Restoring the interrupt
state in a nested way is precisely what is not wanted here. It was
harmless in practice because npxprobe() is called with interrupts
enabled, so restoring the interrupt state enables interrupts. Most
of npxprobe() is a no-op for the same reason...
argument names match those on Alpha.
o Map the fchown directly to FreeBSD. Since the old version of
fchown is also mapped to the native fchown, give the new one
type NODEF.
Tested by: Martin Blapp <mb@imp.ch>
to work, but haven't really due to subtle differences in structs etc.
This is still not perfect (some ioctls are still known not to work, while
others haven't been tested at all), but it's enough to get Debian's ifconfig
to produce relatively sane output.
More work will be needed to get all ioctls (or at least a reasonable subset)
working, and to support the Cisco Aironet config tool mentioned in the PR.
PR: 26546
Submitted by: Doug Ambrisko <ambrisko@ambrisko.com>
Firmware.
- Add a temporary disklabel header to boot off a NetBSD/sparc64
partition. This file can be deleted when we have got a FCode
bootblock.
The disklabel header was obtained from NetBSD.
- Use unsigned types for the (32-bit) Open Firmware device handles
to avoid sign extension on 64-bit architectures.
- Add a standard type definition for Open Firmware arguments.
What the heck, the OpenBSD version will benefit.
1. Add wx_txint_delay as a tunable (defaults to 5000 now, or ~5ms) and switch
to using delayed TXDW interrupts. Since the chip continues to reload the
TIDV with this value for each descriptor written back, this allows continued
deferral of the actual interrupt until the last packet completes (assuming
that 5ms between multiple packets transmitting is reasonable).
2. Add two other SYSCTL entities:
hw.wx.dump_stats
hw.wx.clear_stats
to be used, hackey hackey, to get the watchdog routine to dump/clear
the current softc statistics.
Usage would be:
sysctl -w hw.wx.dump_stats=UNIT
to cause the current stats to be dumped for UNIT.
3. Attempt to clean up wx_detach routine so we don't panic. Well, things
still panic, but given that the code is just like other NIC drivers,
I suspect it's actually something elsewhere, like e1000phy, that's actually
blowing up.
4. Skip the entire test for runt packets- after doing somet thinking
and experimenting, I believe that the chip only doesn't like it if
the whole frame to xmit is < 16 bytes- each TFD can be some fragment
of that. This should improve performance a chunk because of all of the
(14 byte ETHERHEADER + DATA) mbuf chains.
5. Keep track of total frame length. Try not to xmit an odd byte frame-
this is supposed to get around some dumb Cisco switch problems.
6. On the last packet, also set Interrupt Delay && Report Packet Sent
(see #1 above)
7. Attempt to do xmit garbage collection *first* in order to avoid setting
IFF_OACTIVE if at all possible.
MFC after: 1 week
