interrupts; if there's an interrupt pending (i.e. because the user pressed
a key or moved his mice while the kernel was being loaded), the interrupt
handler may safely be run. Fixes PR port-hp300/5397.
("CTLMODE") subdevice. There are legitimate uses for raw commands with
normal tape handles too.
[I'm not sure if this is a final solution. Administrators might want
to set up a more finegrained policy. However, this should not be mixed
with the "set defaults" semantics of the "CTLMODE" subdevice; another
flag should be used instead (eg execute permission or a minor number bit).]
tty structures, and on some machines (namely the DraCo internal lpt, and some
multi-i/o boards for Amigas and DraCos), tying spltty to the pretty high printer
interupt level would hurt serial performance.
On all affected ports but Amiga, spllpt() has been defined in machine/intr.h
to be spltty(), thus preserving old behaviour. Portmasters are encouraged to
change is, if they feel something else is better (e.g., one of its own were
possible).
us to call isp_reset/isp_init internally with impunity.
Rename isp_phoenix to isp_restart and make it global. Clean it up a tad.
If we get an ASYNC_SYSTEM_ERROR code in isp_intr, call isp_restart and
return- the f/w is toasted at this point (usually), so we have to bring
things back to a known state.
In isp_mboxcmd, when we don't see the HOST_INT bit go clear, try and
find out if the isp is trying to tell us something and try again. This
may avoid a potential deadlock where the previous mailbox command hasn't
been cleared by the ISP.
In isp_init don't try and get device parameters if we already have them-
this typically doesn't work if we're in the middle of an isp_restart.
suggestion in draft-floyd-incr-init-win-03. Rather than scaling cwnd back
by the ratio of new segment size to old segment size, we perform a slow start
using the Initial Window, computed with the new segment size.
thorpej