Revert r330897:

This was intended to be a non-functional change. It wasn't. The commit
message was thus wrong. In addition it broke arm, and merged crypto
related code.

Revert with prejudice.

This revert skips files touched in r316370 since that commit was since
MFCed. This revert also skips files that require $FreeBSD$ property
changes.

Thank you to those who helped me get out of this mess including but not
limited to gonzo, kevans, rgrimes.

Requested by: gjb (re)

Partial merge of the SPDX changes

These changes are incomplete but are making it difficult
to determine what other changes can/should be merged.

No objections from: pfg

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

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

Provide includes that are needed in these files, and before were read
in implicitly via if.h -> if_var.h pollution.

Sponsored by: Netflix
Sponsored by: Nginx, Inc.

Add support for Farallon EtherMAC PC Card.
Move ethernet MAC address setting into pccard attachment
Fix panic from IFP2ENADDR() use prior to if_alloc
Remove OLDCARD compat support. This should work still on oldcard, however.
sn_attach now requires that the resources be activated now, so adjust.

Approved by: re (scottl)

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

Don't establish the ISR in the sn_activate routine. I've had two
crashes that had sn0 as the irq that's being serviced, when there was
no sn0 in the system. This seems to prevent them. Also, we want to
wait until after we've registered with the network layer before we
turn on the interrupt spigot to avoid races.

Use __FBSDID().
Also some minor style cleanups.

- Express hard dependencies on bus (pci, isa, pccard) and
network layer (ether).
- Don't abuse module names to facilitate ifconfig module loading;
such abuse isn't really needed. (And if we do need type information
associated with a module then we should make it explicit and not
use hacks.)

Add isa support:
o write isa driver routines.
o factor detach routine in sn_detach.

Remove unneeded #include <machine/clock.h>

Remove 8 unnecessary includes from phk's script

Implement indirection in the pccard probe/attach. This should make it
possible to have different probe/attach semantics between the two
systems and yet still use the same driver for both.

Compatibility methods for OLDCARD drivers. We use these routines to make
it possible to call the OLDCARD driver's probe routine in the context that
it expects. For OLDCARD these are implemented as pass throughs to the
device_{probe,attach} routines. For NEWCARD they are implemented such
such that probe becomes strictly a matching routine and attach does both
the old probe and old attach.

compat devices should use the following:

/* Device interface */
DEVMETHOD(device_probe), pccard_compat_probe),
DEVMETHOD(device_attach), pccard_compat_attach),
/* Card interface */
DEVMETHOD(card_compat_match, foo_match), /* newly written */
DEVMETHOD(card_compat_probe, foo_probe), /* old probe */
DEVMETHOD(card_compat_attach, foo_attach), /* old attach */

This will allow a single driver binary image to be used for both
OLDCARD and NEWCARD.

Drivers wishing to not retain OLDCARD compatibility needn't do this.

ep driver minorly updated.

sn driver updated more than minorly. Add module dependencies to allow
module to load. Also change name to if_sn. Add some debugging code.
attempt to fix the cannot allocate memory problem I'd been seeing.
Minor formatting nits.

Don't claim devices that we fail to probe for. Reverse the sense of a test
so that we return failure when we've failed and succeed when we succeed.
Otherwise, users always get a sn device :-(.

PR: 18431
Submitted by: <sanpei@sanpei.org> MIHIRA Yoshiro-san

Re-enable probe for isa and correct the plug and play issue that
caused this device to be disabled. It will no longer claim all
devices with PNPBIOS enabled.

Don't execute MAC address initialization for non-pccard sn devices.

Two nits and disable isa probe due to its overly agressive claiming of
devices.
o Return ENXIO from sn_isa_probe
o Fix SN_DEBUG printf
o Use IFQ_MAXLEN rather than 8

I'll fix the isa probe when I get access to a real isa attachment
device to test against here in a few days.

Overly agressive snagging behavior noticed by: phk

Newbusify the driver.

Add support, kinda, for megaheartz xjack nic cards. This support
works well for one machine per ethernet segment because it hard codes
the MAC address. The pccardd in -current doesn't have support to
parse the ethernet address from the CIS in the funky way that the
megaheartz card does things (it includes it in the info tuple, as
ascii, which is non-standard). I'd rather kludge this for the moment
and work to read the CIS from the kernel rather than mess with
pccardd.

The isa attachment is untested. The pccard attachment is known to
work since I'm committing over it.

Card Obtained from: Chris D. Faulhaber <jedger@fxp.org>