CVS commit: [netbsd-6] src/sys/dev/pci

["Jeff Rizzo" <riz%netbsd.org@localhost>]

Module Name:    src
Committed By:   riz
Date:           Mon Sep  3 19:09:41 UTC 2012

Modified Files:
        src/sys/dev/pci [netbsd-6]: if_wm.c if_wmreg.h

Log Message:
Pull up following revision(s) (requested by bouyer in ticket #534):
        sys/dev/pci/if_wmreg.h: revision 1.48
        sys/dev/pci/if_wm.c: revision 1.232
        sys/dev/pci/if_wm.c: revision 1.233
        sys/dev/pci/if_wm.c: revision 1.234
Make vlan and all ip/ip6 checksum offload work for the I350.
On newer devices, when using the legacy TX descriptors, vlan-related flags
that were set on the last descriptor of a packet have to be set on the
first one.
For tso/checksum offloads, a new "advanced" descriptor format has to be
used.
Change wcd_txdescs to a union defining all types of descriptors (they
are all 16-bytes wide).
Define a new tx function wm_nq_start(), which handle newer devices.
There is some code duplication with wm_start(), but adding support to
the existing wm_start() would make it a if () {} else {} maze. This also
allows to get rid of some workaround for older chips that are not needed
here.
Use wm_nq_start() instead of wm_start() for the I350 (this should probably
be for all WM_F_NEWQUEUE devices, but I have no hardware but the I350 to
test). Call ifp->if_start() instead of wm_start() where is matters.
Tested on a I350, and a i80003 (which use the old format), both with and
without vlans, with and without checksum offloads.
Enable VLAN hardware tagging on all chips that have the new queue mechanism.
Tested with 82575{EB,GB}, 82576, 82580, I350 and ICH9.
Shut up gcc about some uninitialized variables.


To generate a diff of this commit:
cvs rdiff -u -r1.227.2.2 -r1.227.2.3 src/sys/dev/pci/if_wm.c
cvs rdiff -u -r1.46.2.1 -r1.46.2.2 src/sys/dev/pci/if_wmreg.h

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.