timeout()/untimeout() API:
- Clients supply callout handle storage, thus eliminating problems of
resource allocation.
- Insertion and removal of callouts is constant time, important as
this facility is used quite a lot in the kernel.
The old timeout()/untimeout() API has been removed from the kernel.
asynchronously, in the same style like the process attach/detach functions
-intercept the "cnpollc" call which originally went directly to the
keyboard driver and keep track whether the console is in "polling" state
(DDB!)
-pass a NULL callback to the screen switcher and the process attach/detach
functions if the console is "polling", to tell them that asynchronous
completion is forbidden
and one which isn't. The latter is now used for ttyEcfg, enabling the
VT-switching ioctls to work on it. (This allows Linux X servers to work when
/emul/linux/dev/tty0 is linked to /dev/ttyEcfg.)
WSDISPLAY_DEFAULTSCREENS or 0 if it's not defined) and use it instead
of WSDISPLAY_DEFAULTSCREENS as approptiate, so that number of screens
added on bootup is patchable
move printing of info about added screen into separate routine and
print just one message for all screens added in wsdisplay_common_attach(),
such as:
wsdisplay0: screen 1-7 added (80x25, vt100 emulation)
while here, do minor const poisoning
Reviewed by: drochner
Tested by: jdolecek
headaches.
Now console keyboard and display are connected at autoconfiguration time,
when the last of them is found. Other keyboards / displays remain
unconnected until a new ioctl (WSDISPLAYIO_SETKEYBOARD) is called.
autoconfiguration time; this can be done better from rc.local.
(For INSTALL kernels, WSDISPLAY_DEFAULTSCREENS can be defined which
sets up that many screens with default parameters.)
contiguous chunk of outq to emulation routine. Fix based on patch
from M. Drochner, modified to call output routine once with each
contiguous chunk when the ring buffer wraps around.
improvement in the "cat /usr/share/misc/termcap" benchmark on 486/75
ttwrite queues data for us in OBUFSIZ chunks. If we only consume
OBUFSIZ-1 bytes per call to wsdisplaystart(), we're *guaranteed* to
fall behind when given maximum-sized reads (which will defer
processing the leftovers until ttrstrt gets called, after a timeout)
Note that OBUFSIZ*4 may be overkill; OBUFSIZ*3 may be sufficient to
get maximal performance; OBUFSIZ*2 resulted in only about a 2.5x
performance improvement, but it's 2am and I've done enough tweaking
for the night.
1. If the current screen becomes invalid (ie no focus anymore), always
set the keyboard to translating mode. Otherwise, we could get stuck
because the command keystokes don't come through.
2. Catch errors in attaching to a process (X server) - For this,
implement a callback mechanism similar to the detach case. Add an
argument to report an errno via callback.
add handling of a "close all" command
-split out code common with wsdisplay_delscreen() into
wsdisplay_closescreen()
-add ttymodem call to signal a HUP to the application if the screen
is closed
-add flag to force a "clear screen" on close (XXX should actually be
controlled from userland)
-remove checks for existence of "reset" entries in the emulations - this
is required now
to download fonts and a per-screen call to select a font
allows easier sharing of ressources in the display driver
change the parameters to the load_font driver vector to pass all
available font information
its real meaning
support allocation and deallocation of virtual screens at runtime
implement a "control device" (minor number = 255) and ioctl()s for screen
allocation/deallocation
minor fixes to consistency checks / error handling
(again); put some constant data into shared structures. This makes it
more look like the mouse part, and it helps USB integration.
Implement wskbd_enable() to enable/disable the keyboard.
terminal emulation. For this, change the interface to wsdisplay_kbdinput()
to take a "keysym_t" as argument. From there, the code is handed to the
appropriate emulation module via a new entry point: "translate".
Nuke the ioctls dealing with global assignment of character sequences
to keypad/function keys.
The "sun" emulation works much better now!
The graphics device driver passes a "default attribute" for normal text
output to the wscons framework. If the emulation module needs more
attributes (for different "renditions") it can allocate them via a
callback.
For now, only the "sun" emulation makes use of it.
augustss