Prior to this fix, IEVENT register was always cleared before calling
tsec_error_intr_locked(), which prevented error recovery actions from
happening with polling enabled (and could lead to serious problems, including
controller hang).
Submitted by: Marcin Ligenza marcinl ! pacomp dot com dot pl
- interrupt coalescing
- polling
- jumbo frames
- multicast
- VLAN tagging
The enhanced version of the chip (eTSEC) can also take advantage of:
- TCP/IP checksum calculation h/w offloading
Obtained from: Freescale, Semihalf
Split the driver into the core functionality part (sys/dev/tsec/if_tsec.c) and
the bus attachment (sys/dev/tsec/if_tsec_ocp.c).
This lets better integrate and maintain the driver in other environments with
different attachment abstractions (there is at least one other FreeBSD port --
MPC83xx -- which uses this TSEC driver, but with different local bus model
i.e. some OF derivative). While there, clean up and fix minor cosmetics.
Obtained from: Semihalf
might be currently programmed into the registers.
Underlying firmware (U-Boot) would typically program MAC address into the
first unit only, and others are left uninitialized. It is now possible to
retrieve and program MAC address for all units properly, provided they were
passed on in the bootinfo metadata.
Reviewed by: imp, marcel
Approved by: cognet (mentor)
TSEC is the MAC engine offering 10, 100 or 1000 Mbps speed and is found on
different Freescale parts (MPC83xx, MPC85xx). Depending on the silicon version
there are up to four TSEC units integrated on the chip.
This driver also works with the enhanced version of the controller (eTSEC),
which is backwards compatible, but doesn't take advantage of its additional
features (various off-loading mechanisms) at the moment.
Approved by: cognet (mentor)
Obtained from: Semihalf
MFp4: e500
