- Copy stable/10 (r259064) to releng/10.0 as part of the
10.0-RELEASE cycle.
- Update __FreeBSD_version [1]
- Set branch name to -RC1

[1] 10.0-CURRENT __FreeBSD_version value ended at '55', so
start releng/10.0 at '100' so the branch is started with
a value ending in zero.

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

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

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

Use DEVMETHOD_END.

- Remove attempts to implement setting of BMCR_LOOP/MIIF_NOLOOP
(reporting IFM_LOOP based on BMCR_LOOP is left in place though as
it might provide useful for debugging). For most mii(4) drivers it
was unclear whether the PHYs driven by them actually support
loopback or not. Moreover, typically loopback mode also needs to
be activated on the MAC, which none of the Ethernet drivers using
mii(4) implements. Given that loopback media has no real use (and
obviously hardly had a chance to actually work) besides for driver
development (which just loopback mode should be sufficient for
though, i.e one doesn't necessary need support for loopback media)
support for it is just dropped as both NetBSD and OpenBSD already
did quite some time ago.
- Let mii_phy_add_media() also announce the support of IFM_NONE.
- Restructure the PHY entry points to use a structure of entry points
instead of discrete function pointers, and extend this to include
a "reset" entry point. Make sure any PHY-specific reset routine is
always used, and provide one for lxtphy(4) which disables MII
interrupts (as is done for a few other PHYs we have drivers for).
This includes changing NIC drivers which previously just called the
generic mii_phy_reset() to now actually call the PHY-specific reset
routine, which might be crucial in some cases. While at it, the
redundant checks in these NIC drivers for mii->mii_instance not being
zero before calling the reset routines were removed because as soon
as one PHY driver attaches mii->mii_instance is incremented and we
hardly can end up in their media change callbacks etc if no PHY driver
has attached as mii_attach() would have failed in that case and not
attach a miibus(4) instance.
Consequently, NIC drivers now no longer should call mii_phy_reset()
directly, so it was removed from EXPORT_SYMS.
- Add a mii_phy_dev_attach() as a companion helper to mii_phy_dev_probe().
The purpose of that function is to perform the common steps to attach
a PHY driver instance and to hook it up to the miibus(4) instance and to
optionally also handle the probing, addition and initialization of the
supported media. So all a PHY driver without any special requirements
has to do in its bus attach method is to call mii_phy_dev_attach()
along with PHY-specific MIIF_* flags, a pointer to its PHY functions
and the add_media set to one. All PHY drivers were updated to take
advantage of mii_phy_dev_attach() as appropriate. Along with these
changes the capability mask was added to the mii_softc structure so
PHY drivers taking advantage of mii_phy_dev_attach() but still
handling media on their own do not need to fiddle with the MII attach
arguments anyway.
- Keep track of the PHY offset in the mii_softc structure. This is done
for compatibility with NetBSD/OpenBSD.
- Keep track of the PHY's OUI, model and revision in the mii_softc
structure. Several PHY drivers require this information also after
attaching and previously had to wrap their own softc around mii_softc.
NetBSD/OpenBSD also keep track of the model and revision on their
mii_softc structure. All PHY drivers were updated to take advantage
as appropriate.
- Convert the mebers of the MII data structure to unsigned where
appropriate. This is partly inspired by NetBSD/OpenBSD.
- According to IEEE 802.3-2002 the bits actually have to be reversed
when mapping an OUI to the MII ID registers. All PHY drivers and
miidevs where changed as necessary. Actually this now again allows to
largely share miidevs with NetBSD, which fixed this problem already
9 years ago. Consequently miidevs was synced as far as possible.
- Add MIIF_NOMANPAUSE and mii_phy_flowstatus() calls to drivers that
weren't explicitly converted to support flow control before. It's
unclear whether flow control actually works with these but typically
it should and their net behavior should be more correct with these
changes in place than without if the MAC driver sets MIIF_DOPAUSE.

Obtained from: NetBSD (partially)
Reviewed by: yongari (earlier version), silence on arch@ and net@

- Even after masking the media with IFM_GMASK the result may have bits
besides the duplex ones set so just comparing it with IFM_FDX may lead
to false negatives.
- Simplify ciphy_service() to only set the manual configuration bits
once after we have figured them all out. This also means we no longer
unnecessarily update the hardware along the road.

MFC after: 1 week

Remove redundant cases and a style(9) bug.

Convert the PHY drivers to honor the mii_flags passed down and convert
the NIC drivers as well as the PHY drivers to take advantage of the
mii_attach() introduced in r213878 to get rid of certain hacks. For
the most part these were:
- Artificially limiting miibus_{read,write}reg methods to certain PHY
addresses; we now let mii_attach() only probe the PHY at the desired
address(es) instead.
- PHY drivers setting MIIF_* flags based on the NIC driver they hang
off from, partly even based on grabbing and using the softc of the
parent; we now pass these flags down from the NIC to the PHY drivers
via mii_attach(). This got us rid of all such hacks except those of
brgphy() in combination with bce(4) and bge(4), which is way beyond
what can be expressed with simple flags.

While at it, I took the opportunity to change the NIC drivers to pass
up the error returned by mii_attach() (previously by mii_phy_probe())
and unify the error message used in this case where and as appropriate
as mii_attach() actually can fail for a number of reasons, not just
because of no PHY(s) being present at the expected address(es).

Reviewed by: jhb, yongari

- In the spirit of previous simplifications factor out the checks for a
different PHY instance being selected and isolation out into the wrappers
around the service methods rather than duplicating them over and over
again (besides, a PHY driver shouldn't need to care about which instance
it actually is).
- Centralize the check for the need to isolate a non-zero PHY instance not
supporting isolation in mii_mediachg() and just ignore it rather than
panicing, which should sufficient given that a) things are likely to
just work anyway if one doesn't plug in more than one port at a time and
b) refusing to attach in this case just leaves us in a unknown but most
likely also not exactly correct configuration (besides several drivers
setting MIIF_NOISOLATE didn't care about these anyway, probably due to
setting this flag for no real reason).
- Minor fixes like removing unnecessary setting of sc->mii_anegticks,
using sc->mii_anegticks instead of hardcoded values etc.

Use the mii_data provided via mii_attach_args and mii_pdata respectively
instead of reaching out for the softc of the parent.

Some style changes to a couple of PHY drivers:
- Fix some whitespace nits.
- Fix some spelling in comments.
- Use MII_ANEGTICKS instead of 5.
- Don't define variables in nested scope.
- Remove superfluous returns at the end of void functions.
- Remove unused static global rgephy_mii_model.
- Remove dupe $Id$ in tdkphy(4).
- Sort brgphys table.

MFC after: 2 weeks

Add a helper function mii_phy_dev_probe(), which wraps around the
mii_phy_match() API and takes care of the PHY device probe based on
the struct mii_phydesc array and the match return value provided.
Convert PHY drivers to take advantage of mii_phy_dev_probe(),
converting drivers to provide a mii_phydesc table in the first
place where necessary.

Reviewed by: yongari
MFC after: 2 weeks

Replace hard-coded magic constants to system defined constants
(BUS_PROBE_DEFAULT, BUS_PROBE_GENERIC etc).
There is no functional changes.

Reviewed by: oleg, scottl

Use ansi function definitions in preference to K&R to reduce diffs
with NetBSD (and cause it looks cooler).

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

Add some missing <sys/module.h> includes which are masked by the
one on death-row in <sys/kernel.h>

Remove double __FBSDID and move the remaining one into a common place after
the license(s) and before the driver comment (the latter only in drivers not
having __FBSDID at that location).

Correct the phy_service() routine case MII_TICK to correctly track
the falling edge of a media state change.

This is in preparation for media state change notification to the
routing socket.

No objections by: sam, wpaul, ru, bms
Brucification by: bde

Use __FBSDID().
Also some minor style cleanups.

Use __FBSDID rather than rcsid[].

Remove miidevs.h and generate it from miidevs at compile time.
The devlist2h.awk tool to do this has been repocopied to sys/tools/.

Remove unnecessary <sys/malloc.h> include.

Submitted by: marius@alchemy.franken.de
MFC after: 1 week

Put function return types on a line by themselves.
Cleanup my earlier de-__P sweep and remove whitespace between function
names and paramters.

Clean up mii/phy drivers: Remove the MIIF_DOINGAUTO which doesn't really
do anything at the end of the day except bloat the drivers which has
copy&pasted it.

Make one generic mii_phy_detach() to replace 19 slightly different ones.

Rename mii_phy_auto_stop() mii_phy_down().

Introduce mii_down(), use it from nge. Do not indirect it to 19 identical
case's in 19 switchstatements like NetBSD did.

Remove __P.

Cleanup pass for mii drivers.
. Make internal service routines static.
. Use a consistent ordering of checks in MII_TICK. Do the work in the
mii_phy_tick() subroutine if appropriate.
. Call mii_phy_update() to trigger the callbacks.

Tweak the xmphy driver a little bit based on something I learned about
the built-in 1000baseX interface in the Level 1 LXT1001 chip. The Level 1
PHY comes up with the isolate bit in the control register set by default,
but it also has the autonegotiate bit set. When you tell the xmphy driver
to select IFM_AUTO mode, it sees that the autoneg bit is already on, and
thus doesn't bother updating the control register. However this means that
the isolate bit is never turned off (unless you manually select 1000baseSX
full or half duplex mode, which does result in the control register being
modified and the ISO bit being turned off).

This subtle and unusual behavioral difference stopped me from being able
to receive packets on the SMC9462TX card for several days, since isolating
the PHY disconnects it from the MAC's data interface. The fix is to omit
the 'is the autoneg big set?' test, since it doesn't really provide much
of an optimization anyway.

This commit also updates the xmphy driver to support the Jato/Level 1
internal PHY. (I'm not sure how Jato Technologies is related to Level 1:
all I know is the OUI from the PHY ID registers maps to Jato in the OUI
database.) This will be used once I add the if_lge driver to support
the LXT10010 chip.

Grrrrr. That last commit was supposed to be to the head, not to -stable
(even though I want the fixes in -stable anyway). I'm sure I'm going
to get flamed now for committing to -stable and -current too quickly.
*sigh*

Remove unneeded #include <machine/clock.h>

Add PHY drivers for the XMAC II's internal PHY and the Broadcom BCM5400
1000baseTX PHY. These will be used by the SysKonnect gigabit ethernet
driver shortly.