freebsd-skq/sys/i386
Bruce Evans 33dc7e1b84 Reduce timeout frequency from `hz' to 0 if no ports are open or to 1 if
no ports are active, provided there are no polled ports and no
`LOSESOUTINTS' ports.  Do a little more in the interrupt handler instead.
This is a little less efficient if there are are many active ports but
a little more efficient otherwise.  Polled ports are ones with no irq
specified (as before).  `LOSESOUTINTS' ports are ones with 0x08 set in
their config flags.  Unless this flag is set, it will now take up to one
second to recover from lost output interrupts, if any.  Some 8250s and
16450s lose output interrupts.

Improve output buffering: copy the clist buffer to 2 linear buffers if
necessary and possible instead of to 1.  Handle an arbitrary queue of
buffers in the interrupt handler.  Check for waking up sleepers after
copying characters out of the clist buffer instead of before.

Delay translation of TIOCM_DTR to MCR_DTR etc. so that the top level
routines are more machine independent.

Fix bogus device register in unused code.
1995-06-25 04:51:01 +00:00
..
apm Remove trailing whitespace. 1995-05-30 08:16:23 +00:00
bios Remove trailing whitespace. 1995-05-30 08:16:23 +00:00
boot 1) Enable boot from root partition which end > cyl 1023, it isn't criminal 1995-06-23 01:42:42 +00:00
conf Add an option to the psm driver to skip the parts of the probe which break 1995-06-22 10:56:56 +00:00
eisa Remove trailing whitespace. 1995-05-30 08:16:23 +00:00
i386 Replace \n\r by \n in error messages. 1995-06-14 05:06:51 +00:00
ibcs2 Remove trailing whitespace. 1995-05-30 08:16:23 +00:00
include Remove trailing whitespace. 1995-05-30 08:16:23 +00:00
isa Reduce timeout frequency from `hz' to 0 if no ports are open or to 1 if 1995-06-25 04:51:01 +00:00
pci
scsi Merge RELENG_2_0_5 into HEAD 1995-06-11 19:33:05 +00:00
Makefile