- make IPI takes two arguments.
- add IPI event counters per-CPU.
- implement IPI functions which were missing or broken.
- insert DELAY while halting primary CPU in IPI handler.
tty subsystem locking is not consistent and Andrew didn't have
time to come up (or guide to) the right fix.
This prevents machines with serial console on zs(4) from deadlocking on
first input.
here will reenable interrupts as a side effect, and we don't want it here.
It could cause some event handlers to run twice (which should be harmless),
and trap() to be called on the wrong LWP in doreti_checkast (which can
probably cause some damage).
EMFILE. We treat _file as an unsigned short to double our range, with a
special case for -1 (closed). Make a note of what we should do about stdio
if we ever bump libc. We could change _file in the future compatibly to an
int by putting it in the extension space but for now we don't bother.
pre/postcall wrapper around the exported namei, since postcall no
longer needs to execute VFS_ROOT (which is a bad thing to do while
potentially holding on to a locked vnode, mmkay).
usable VGA console ("call ddb_vgapost")
-allow to switch from/to screens occupied by an X server if the graphics
device is console and in polling mode (ie DDB)
This together allows to get a DDB session on a VGA console if the
system crashed while X11 was running.
As long as the protocol to tell X servers about virtual screen switches
is as primitive as it is, it is unsafe to restart an X session afterwards.
So this is basically for crash analysis.
tricky) with the help of rump system calls instead of calling namei
by themselves. Trust me when I say it was non-trivial to get the
namei calls right.
Use fewer 'error = ...; break;' statements and more 'return
...;'
Make the SIOCSIFFLAGS case more clear by using a switch
statement instead of an if-else if-else chain.
Shorten a staircase, and remove two unnecessary curly
braces.
Improve PMF-ability.
Add a 'flags' argument to suspend/resume handlers and
callers such as pmf_system_suspend().
Define a flag, PMF_F_SELF, which indicates to PMF that a
device is suspending/resuming itself. Add helper routines,
pmf_device_suspend_self(dev) and pmf_device_resume_self(dev),
that call pmf_device_suspend(dev, PMF_F_SELF) and
pmf_device_resume(dev, PMF_F_SELF), respectively. Use
PMF_F_SELF to suspend/resume self in ath(4), audio(4),
rtw(4), and sip(4).
In ath(4) and in rtw(4), replace the icky sc_enable/sc_disable
callbacks, provided by the bus front-end, with
self-suspension/resumption. Also, clean up the bus
front-ends. Make sure that the interrupt handler is
disestablished during suspension. Get rid of driver-private
flags (e.g., RTW_F_ENABLED, ath_softc->sc_invalid); use
device_is_active()/device_has_power() calls, instead.
In the network-class suspend handler, call if_stop(, 0)
instead of if_stop(, 1), because the latter is superfluous
(bus- and driver-suspension hooks will 'disable' the NIC),
and it may cause recursion.
In the network-class resume handler, prevent infinite
recursion through if_init() by getting out early if we are
self-suspending (PMF_F_SELF).
rtw(4) improvements:
Destroy rtw(4) callouts when we detach it. Make rtw at
pci detachable. Print some more information with the "rx
frame too long" warning.
Remove activate() methods:
Get rid of rtw_activate() and ath_activate(). The device
activate() methods are not good for much these days.
Make ath at cardbus resume with crypto functions intact:
Introduce a boolean device property, "pmf-powerdown". If
pmf-powerdown is present and false, it indicates that a
bus back-end should not remove power from a device.
Honor this property in cardbus_child_suspend().
Set this property to 'false' in ath_attach(), since removing
power from an ath at cardbus seems to lobotomize the WPA
crypto engine. XXX Should the pmf-powerdown property
propagate toward the root of the device tree?
Miscellaneous ath(4) changes:
Warn if ath(4) tries to write crypto keys to suspended
hardware.
Reduce differences between FreeBSD and NetBSD in ath(4)
multicast filter setup.
Make ath_printrxbuf() print an rx descriptor's status &
key index, to help debug crypto errors.
Shorten a staircase in ath_ioctl(). Don't check for
ieee80211_ioctl() return code ERESTART, it never happens.
> Split device_t and softc for the NE2000 Ethernet chip and all its variants
> and attachments. Use device_t accessors, correct types, and ANSIfy when
> appropriate.
IFF_UP and IFF_RUNNING before running the 'disable' step, instead
of after. Soon I will handle the 'disable' step by calling into
PMF, which may call if_stop(, 0). Ordinarily, that is harmless.
This change lets the if_stop() routines exit early when they find
on entry that IFF_RUNNING is not set.
