* in vga_init(), set the screen type to WSCONS_DEFAULT_TYPE, which defaults
to "80x25".
XXX: the code currently makes no attempt to ensure that a font
with the appropriate width & height is available, effectively
limiting this default to either "80x25" or "80x24" at this
time.
* make wsdisplay_screentype_pick() non static, so that vga_init() can use it
"off_t" and the return value is a "paddr_t" to allow mappings
at offsets past 2^31 bytes. Somewhat inspired by FreeBSD, which
only changed the offset to a "vm_offset_t".
Includes updates for the i386, pc532 and sh3 mmmmap from Jason Thorpe.
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.)
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.
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
to take a single character at a time, where the character is an "int" now.
The old interface (took a string) was never called with more than 1
char to print, and the "int" allows us to handle charsets cleanly.
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.
sato