MFC r342086:
Add support for the nForce MCP89 adapter.

PR: 234015

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

Increase the number of TX DMA segments from 32 to 35. It turned
out 32 is not enough to support a full sized TSO packet.
While I'm here fix a long standing bug introduced in r169632 in
bce(4) where it didn't include L2 header length of TSO packet in
the maximum DMA segment size calculation.

In collaboration with: rmacklem
MFC after: 2 weeks

Add basic WOL support for MCP ethernet controllers. It seems the
controller does not perform automatic switching from 1000Mbps link
to 10/100Mbps link when WOL is activated. Implement establishing
10/100Mps link with auto-negotiation in driver. Link status change
handler was modified to remove taskqueue based approach since driver
now needs synchronous handling for link establishment.

Submitted by: Yamagi Burmeister (lists <> yamagi.org ) (initial version)
Tested by: Yamagi Burmeister (lists <> yamagi.org )
MFC after: 1 week

Add hardware MAC statistics support. Register information was
obtained from Linux forcedeth driver.
While I'm here move creating a sysctl node for process_limit to
function nfe_sysctl_node().

Tested by: "Arno J. Klaassen" < arno <at> heho dot snv dot jussieu dot fr >

Add device ids for MCP77/79 and set appropriate support flags.

Obtained from: OpenBSD
PR: kern/127529

Add support for MCP73 chips.

Tested by: "Daan Vreeken [PA4DAN]" ( Danovitsch AT vitsch DOT net )
MFC after: 1 week

Nuke local jumbo allocator and switch to use of UMA backed page
allocator for jumbo frame. Also remove unneeded jlist lock which
is no longer required to protect jumbo buffers.
With these changes jumbo frame performance of nfe(4) was slightly
increased and users should not encounter jumbo buffer allocation
failure anymore.

The maximum size of the sum of all segment lengths in a given DMA mapping
should be 65535 + link layer headers.

Pointed out by: gallatin

Increase a maximum segment size of DMA to 4096. Previously it used
MCLBYTES for the segment size but it used too many Tx descriptors in
TSO case.
While I'm here adjust maximum size of the sum of all segment lengths
in a given DMA mapping to 65535, the maximum size, in bytes, of a IP
packet.

Bring overhauled nfe(4) into tree.

o s/printf/device_printf/g
o Nuke OpenBSDism.
o Nuke NetBSD/OpenBSD specific DMA sync operations.(we don't have a way
to sync a single descriptor within a DMA map.)
o Remove recursive mutex.
o bus_dma(9) clean up.
o 40bit DMA address support.
o Add protection for Rx map load failure.
o Fix a long standing bug for watchdog timeout. [1]
o Add additional protections, missing Tx completion interrupt, losing
start Tx command, for watchdog timeout.
o Switch to taskqueue(9) API to handle interrupts.
o Use our own timer for watchdog instead of if_watchdog/if_timer
interface.
o Advertise VLAN header length/capability correctly to upper layer.
o Remove excessive kernel stack consumption in nfe_encap().
o Handle highly fragmented mbuf chains correctly.
o Enable etherenet address reprogramming with ifconfig(8).
o Add ALTQ/TSO, MSI/MSIX support.
o Increased Rx ring to 256 descriptors from 128.
o Align Tx/Rx descriptor ring on sizeof(struct nfe_desc64) boundary.
o Remove alignment restrictions on Tx/Rx buffers.
o Rewritten jumbo frame support code.
o Add support for hardware assistend VLAN tag insertion/stripping.
o Add support for Tx/Rx flow control based on patches from Peer Chen. [2]
o Add a routine that detects whether ethernet address swap routines is
required. [3]
o Add a workaround that take MAC/PHY out of power down mode.
o Add suspend/resume support.
o style(9) and code clean up.

Special thanks to Shigeaki Tagashira, the original porter of nfe(4),
who submitted lots of patches, performed uncountable number of
regression tests and maintained nfe(4) for a long time. Without his
enthusiastic help and support I could never have completed this
overhauling task.

The only weak point of nfe(4) compared to nve(4) is instability of
manual half-duplex media selection on certain hardwares(auto sensing
media type should work for all cases, though). This was a long
standing bug of nfe(4) and I still have no idea why it doesn't work
on some hardwares.

Obtained from: OpenBSD [1]
Submitted by: Peer Chen < pchen at nvidia dot com > [2], [3]
Reviewed by: Shigeaki Tagashira < shigeaki AT se DOT hiroshima-u DOT ac DOT jp >
Tested by: Shigeaki Tagashira, current
Discussed with: current
Silence from: obrien

Fix TX/RX checksum offload.

Submitted by: Peer Chen at nVIDIA

Fix the jumbo frame support.

Submitted by: Peer Chen at nVIDIA (reworked by me)

style(9)

Correct the WOL magic value.

Submitted by: Peer Chen at nVIDIA

Add support for MCP61 and MCP65 adaptors.

Submitted by: Peer Chen at nVIDIA

Add a pure open source nForce Ethernet driver, under BSDL.
This driver was ported from OpenBSD by Shigeaki Tagashira
<shigeaki@se.hiroshima-u.ac.jp> and posted at
http://www.se.hiroshima-u.ac.jp/~shigeaki/software/freebsd-nfe.html
It was additionally cleaned up by me.
It is still a work-in-progress and thus is purposefully not in GENERIC.
And it conflicts with nve(4), so only one should be loaded.

This commit was generated by cvs2svn to compensate for changes in r159952,
which included commits to RCS files with non-trunk default branches.

Import the nfe (nForce Ethernet) driver from OpenBSD.
This is a pure open source NIC driver with a BSD license.
These bits were taken from the OpenBSD public CVS repository on 1-May-06.