optimizations I have been working on yet, but does bring in some bug fixes
and performance improvments that were easy to regression test:
Setup the data fifo threshold and bus off timing correctly for 27/284x cards.
Users of these adapters with fast periferals (greater than 5MB/s) will notice
a big performance difference. (Sometimes as large as going from 3.7->8.3MB/s).
Fix handling of the active target flags. Some of the outbs where missing
the base offset in the abort code. The abort code still needs lots of work.
Support 3940 controllers, but only with 16 SCBs for now. Eventually I'll
add support for all 255, but I need to find a tester for the code first since
we have to enable the cards external SRAM to do this.
Add Dan Eischen's serial eeprom reading facilities. This allows the 2940
adapters to pull additional information left over from SCSI-Select right out
out of the configuration seeprom.
If the BIOS is disabled on 274x controllers, reset all target parameters
to there defaults since you can't rely on what is stored in scratch ram.
Report motherboard controllers as such.
Stick the first SG address and count into the SCB data and count areas for
all transfers in preparation of a later sequencer optimization.
Keep track of which targets can are allowed to have the disconnection
priveledge since this will be handled by the kernel driver in the future.
If a target issues a message reject in response to a tagged message,
disable tagged queuing for that target. Some seagates say they can do
tagged queuing, but lie, and its a shame to have to disable tagged queuing
on all devices just because you have one that can't cope.
For those where it was easy, drivers were also fixed to call
dev_attach() during probe rather than attach (in keeping with the
new design articulated in a mail message five months ago). For
a few that were really easy, correct state tracking was added as well.
The `fd' driver was fixed to correctly fill in the description.
The CPU identify code was fixed to attach a `cpu' device. The code
was also massively reordered to fill in cpu_model with somethingremotely
resembling what identifycpu() prints out. A few bytes saved by using
%b to format the features list rather than lots of ifs.
values for syncronous negotiation. The 284x series adaptors can now be
supported without the Bios being enabled. If you disable the Bios on the
274x series adaptors, all configuration parameters revert to the default
since there is no way to retrieve them.
Justin T. Gibbs
Rodney W. Grimes
Garrett Wollman
Andreas Schulz
Jordan K. Hubbard