Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Only treat positive values as errors...

Pointed out by: wsk
Message-ID: <45060FC4.2090308@gddsn.org.cn>

Last change to this file actually removed the oldcard compat code.
This change removes one last K&Rism.

Make sure that we call if_free(ifp) after bus_teardown_intr. Since we
could get an interrupt after we free the ifp, and the interrupt
handler depended on the ifp being still alive, this could, in theory,
cause a crash. Eliminate this possibility by moving the if_free to
after the bus_teardown_intr() call.

Remove bus_{mem,p}io.h and related code for a micro-optimization on i386
and amd64. The optimization is a trivial on recent machines.

Reviewed by: -arch (imp, marcel, dfr)

Start each of the license/copyright comments with /*-, minor shuffle of lines

Fix disordering of pccarddevs.h noticed by bde. Also remove a few
redundant includes and fix some of the include disordering.

Submitted by: bde

Move to generating pccarddevs.h on the fly, both for the kernel and
the modules.

Also generate usbdevs.h automatically now, but a non-kernel file is
stopping that at the moment.

Include pccard/pccard_cis.h here too

Fix copyright comment & FBSDID style nits.

Requested by: bde

Use __FBSDID().
Also some minor style cleanups.

No need to wrap siodetach() with sio_pccard_detach.

Be nice. There are evidentally a number of different cards that
identify themselves as serial cards that it would be desirable to
attach a different driver than sio to. Since we are claiming all
serial cards, this is not possible. Instead, return -100 to indicate
that we're willing to take the card, but still allow other drivers to
attach.

Pointed out by: Maksim Yevmenkin

Remove __P.

Add support for different serial clock frequencies and not just the
standard one of 1.8432MHz. This will be used by the puc (PCI
"universal" communication card) device driver.

Reviewed by: bde

Split the sio driver for pc98 into bus front end and back end.
(merged from the files in sys/dev/sio)

bde suggests that sio really wants to manage its own softc. This
allows us to move the sio softc data structure back into sio.c and
reduce the complexity of the non sio.c sio files.

Submitted by: bde

# I didn't fix the locking issues that bruce also submitted.

First part of patches to make sio grok 16-bit serial cards under
NEWCARD. Other patches may be reqiured to sio to prevent a hang on
eject. Also add commented out entries for sio_pccard.c in files.pc98
to match other architectures.

Submitted by: yamamoto shigeru-san

Break out the bus front ends into their own files. Rewrite
sio_pccard_detach to use new siodetach. Add an extra arg to sioprobe
to tell driver to probe/not probe the device for IRQs.

This incorporates most of Bruce's review material. I'm at a good
checkpoint, but there will be more to come based on bde's further
reviews.

Reviewed by: bde