This also removes static from some other functions that had been copied out
to at least the intel driver, but perhaps others that were doing mode list
handling.
RRGetInfo can be expensive. Don't invoke it when quering Xinerama
information or setting a new CRTC configuration.
(cherry picked from commit b5aa9eb8e6)
To allow RandR objects to be created before the screen object exists,
the resource types must be registered with the resource database.
A driver wishing to create RandR objects must call RRInit before doing so.
Also, fix a segfault when setting Output data before it is associated with a
screen.
xf86 drivers need to create RandR object in the PreInit stage,
before the ScreenRec is allocated. Changing the RandR DIX code
to permit this required the addition of functions that later associate the
objects with the related screen.
An additional change is that modes are now global, and no longer associated
with a specific screen. This change actually makes mode management cleaner
as there is no more per-screen list of modes to deal with.
This changes the RandR 1.2 ABI/API for drivers.
With Xinerama support built into the X server but not in use,
sprite.screen is NULL and yet the SyntheticMotion
macro would dereference it. Avoid that by just passing sprite.screen
to PostSyntheticMotion which can then dereference it when Xinerama is
enabled.
Also, define PostSyntheticMotion in dixevents.h and include dixevents.h in
getevents.c
Only try to build Linux support on Linux. We should probably disable all
OS-dependent DDXes if we don't have a workable OS (and only build
Xephyr/Xfake), but that's future work.
If we're mapping something in the "legacy range" (0-1Mb), we shouldn't
expand the requested range to the entire 0-1Mb range. Typically this
is for mapping the VGA frame buffer, and some platforms support mmap of
the frame buffer but not the entire 0-1Mb range.
For example, HP sx1000 and sx2000 ia64 platforms can have memory from
0-0x9ffff, VGA frame buffer from 0xa0000-0xbffff, and memory from
0xc0000-0xfffff. On these platforms, we can't map the entire 0-1Mb
range with the same attribute because the memory only supports WB,
while the frame buffer supports only UC. But an mmap of just the
frame buffer should work fine.
Mach64 driver bails out on ia64 because it cannot map device
memory. It turns out that some bogus and unneeded code attempts
to find the root bridge of the device and fails to do so proberly
as there this host-to-pci bridge is not existant. This code has
been around for years although it completely unclear what it had
been intended for. Fixing this by eliminating the bogus code.