Rename min/max -> uimin/uimax for better honesty.

These functions are defined on unsigned int. The generic name
min/max should not silently truncate to 32 bits on 64-bit systems.
This is purely a n

Rename min/max -> uimin/uimax for better honesty.

These functions are defined on unsigned int. The generic name
min/max should not silently truncate to 32 bits on 64-bit systems.
This is purely a name change -- no functional change intended.

HOWEVER! Some subsystems have

#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))

even though our standard name for that is MIN/MAX. Although these
may invite multiple evaluation bugs, these do _not_ cause integer
truncation.

To avoid `fixing' these cases, I first changed the name in libkern,
and then compile-tested every file where min/max occurred in order to
confirm that it failed -- and thus confirm that nothing shadowed
min/max -- before changing it.

I have left a handful of bootloaders that are too annoying to
compile-test, and some dead code:

cobalt ews4800mips hp300 hppa ia64 luna68k vax
acorn32/if_ie.c (not included in any kernels)
macppc/if_gm.c (superseded by gem(4))

It should be easy to fix the fallout once identified -- this way of
doing things fails safe, and the goal here, after all, is to _avoid_
silent integer truncations, not introduce them.

Maybe one day we can reintroduce min/max as type-generic things that
never silently truncate. But we should avoid doing that for a while,
so that existing code has a chance to be detected by the compiler for
conversion to uimin/uimax without changing the semantics until we can
properly audit it all. (Who knows, maybe in some cases integer
truncation is actually intended!)

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set BUS_SPACE_MAP_PREFETCHABLE when mapping the SFB32 range
now using alpha fonts is actually faster than using bitmap fonts

support anti-aliased fonts and let the hardware do the alpha blending

Add support for the WSDISPLAYIO_GET_EDID ioctl (requires passing a device_t
to ffb_attach).

#include <sys/bus.h> instead of <machine/bus.h>.

CFATTACH_DECL_NEW

* implement hw acceleration for putchar()
* use VCONS for copycols()
* don't map the framebuffer now that we don't access it anymore
* make a bunch of drawing engine syncs optional

merge ktrace-lwp.

Make ffb take part in the /dev/fbN circus.

Ansify.

The DAC registers do not need to be mapped linearly and thus should not.

Map the ffb's DAC register space and add support for video "blanking"
(aka WSDISPLAYIO_{S,G}VIDEO).

More on fbnode to prom_stdout_node rename.

__KERNEL_RCSID()

Port of OpenBSD ffb driver written by Jason L. Wright.