the lazy-transmit-interrupt logic, fixing a few minor logic problems.
Now unable to reproduce the lockup problem described in PR #6767. Changing
PR's state to "feedback".
Soren S. Jorvang <soren@t.dk>, with a lower match level.
Display the other accented characters which are not present in the IBM
character set by their non-accented equivalents, with an even lower
match level.
not, depending on the port-specific environment.
Separate panic() and exit() so that the mi/default panic() can be used
without conflicting with a local exit() definition, move exit(void)
prototype to the default exit() implementation.
Closes PR bin/6990 by Wolfgang Helbig <helbig@Informatik.BA-Stuttgart.DE>.
* Macroize hardware and software descriptor access (much easier to read).
* Simplify and optimize the transmit loop a bit, and use IFF_OACTIVE as
appropriate.
* Fix a potential race condition in the transmit loop. This change has
made the driver significantly more stable (almost completely eliminated
the "device timeout" errors that have plagued this driver).
* Implement transmit interrupt pacing.
* Add missing bus_dmamap_sync() calls (on transmit and receive descriptors
and fraglists). (Draining the write buffer when accessing these structures
may have also contributed to the increased stability of this driver on
the Alpha.)
like the SMC83C100 EPIC/100 driver:
* Rather than using pointers to the head and tail of the transmit and
receive rings, use wrapping indexes into arrays. This is a little more
obvious when reading the code.
* More cleanly separate the hardware descriptor from the software descriptor.
* bus_dma it everywhere.
* Implement interrupt pacing and avoid a potential race in the transmit
loop.
Now this looks more or less like the Rhine driver I was working on when
this driver was committed :-) Update copyright notice to reflect that.
Make the initializer for BAUDLO depend on PCLK directly; it was incorrect on
some ports where PCLK is not 4.9152MHz.
XXX Is the default value actually used?
thorpej