- allow whitespace before a command, and if there is only whitespace,
don't print the help message (seeing a help message after just
tapping return can be a shade annoying).
lpt{open,close,write,ioctl} prototypes.
* Remove the cdev_decl(lpt). We get it from machine/conf.h.
* Add and use LPTSOFTC.
* Use level triggered interrupts (seems to work with less spurious interrupts).
* Do not use NLPT. Use lpt_cd.cd_ndevs to get the number of lpt devices.
* ether_ifattach now needs the ethernet address of the device. Supply a
dummy address.
* Include arp.h instead of ether.h.
* Remove softnet prototype. It is in cpu.h now.
* Remove calls to intr_init and intr_establish for softclock and softnet.
This is done in the mainbus attach routine now.
* Remove impintr. This seems to be dead.
* Add natmintr :-)
the address of the desired PTE location is readily available in the
callers context (setpte4m() retraces the entire 3-level structure
to arrive at the PTE location).
Also, in many cases we can do away with the distinction between pmaps
that have or have not allocated a context. This is really only useful
in cases where we're interested in the REF or MOD bits which can differ
in the TLB version of a PTE. By doing this, we avoid getpte()'s which
in many cases instruct the MMU to start a table walk only to find out
that there's nothing there after going 2/3 of the way, or waste a TLB
entry because of TLB flushing soon after getpte() completes.
In addition, there's a hook to flush the cache line corresponding to
the (kernel virtual) location of a PTE entry when it gets altered.
- Indent some comments appropriately per KNF.
- Output all diagnostics using the device name rather than a static string.
- Fix a (mostly marmless) bug in snintr(), where loss of heartbeat wasn't
properly ignored and could mask the `receive descriptors exhausted'
diagnostic.
thorpej