version has 2GB direct map starting at 2GB, and either 256MB or 1GB
S/G starting at 1MB. I've done *some* testing on this, but I'm not
quite happy with it yet.
out how much s/g ram is available. Can't really use the 128K entry S/G
ram yet- but I'll fix that later. More importantly, add in a dwlpx_iointr
handler that will try and figure out what the DWLPX error is and at
least print out what is happening- I actually found it useful in S/G
entry debugging as it could tell me that I had some bad S/G entries.
certain 17" monitors. Change from Michael R. Zucca, PR 4988.
XXX - This can cause problems on system with the DAFB chip which currently
use only a NuBus-based video adapter. In particular, grf devices may not be
attached properly in this case. This unfortunate situation is less annoying
than not having a reasonable console, however. A reasonable, reliable
monitor sense algorithm for the DAFB would resolve the problem.
This should allow to use old X servers which depend on the old mouse
interface to work in the future.
XXX There can be only one attachment - either to an old console driver
or to the new pckbc driver - be configured.
-rename the "pckbd" internal attribute to pckbcport, it conflicts with the
real pckbd device in dev/pckbc
-add attachments of pccons and pms to the new mi keyboard controller
driver (more or less for testing)
-include the new "files.wscons" and "files.pckbc"
-add declarations for VGA - must be done here for now to avoid conflicts
with alpha's private VGA driver
-allow to bus_space_map() for the memory hole in early startup
-add calls to the new XXX_cnattach() functions to consinit()
-add a "pckbc_machdep_cnattach()" dispatch function to allow the
combination of old console driver - new keyboard controller driver
* Add more #ifdef pmax/#endif, #ifdef alpha/#endif where appropriate.
Config and heade files need more work (or replacement)
change TK_NOTYET to HAVE_RCONS
change commented-out /* && cn_tab.cn_screen */ to && raster_console()
* Add DDB hooks.
* Note where Alpha console ignores carrier on consoles.
* Add pmax-derived console tty-size code inside HAVE_RCONS
* Fold in gross pmax rcons-input hooks, inside HAVE_RCONS
Untested, but whitespace/ifdef only, cross-compiles OK,
preprocessing shows no significat differences (famous last words)
the TLB and I-cache in the SWITCH_CONTEXT macro.
- Right after switching to proc0's newly-created context at startup time,
flush the TLB and I-cache; this is the only place where it's not done
automatically.
- Fix a nasty bug in a critical section of cpu_switch(); change the
pmap_activate -> SWITCH_CONTEXT -> pmap_deactivate sequence to
pmap_deactivate -> pmap_activate -> SWITCH_CONTEXT. This prevents
erroneously marking a pmap inactive if switching to a process that
shares it's address space (and thus its pmap) with the oldproc! Noticed
by Chris Demetriou.
of TLB and I-cache flushes, significantly speeding up context switches.
Once again, many thanks to Chris Demetriou and Ross Harvey for code
review and debugging assistance!
mjacob