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Rob Clark ee8c9a1383 freedreno/kgsl: don't even bother trying CREATE_FD 
Don't even bother trying DRM_KGSL_GEM_CREATE_FD.  It hasn't worked since
(afaict) 2.6.35 kernels.  And in some cases seems to cause some
problems.  Instead just allocate a minimum size dummy object (just for
purposes of having a handle) and then mmap the framebuffer as user-mem
(which is deprecated, but seems to still work.. and as far as I can tell
is the best option for now).

Signed-off-by: Rob Clark <robclark@freedesktop.org>
 		2014-03-05 10:35:41 -05:00
..
kgsl freedreno/kgsl: don't even bother trying CREATE_FD 2014-03-05 10:35:41 -05:00
msm freedreno: some msm-ring reset/flush fixes 2014-02-19 11:47:40 -05:00
Makefile.am freedreno: set automake options to include subdir-objects 2013-08-30 11:37:14 -04:00
README freedreno: add freedreno DRM 2013-02-14 12:13:15 -05:00
freedreno_bo.c freedreno: add bo cache 2013-12-13 15:48:10 -05:00
freedreno_device.c freedreno: fix null ptr in error path 2014-03-05 09:40:19 -05:00
freedreno_drmif.h freedreno: add fd_device_new_dup() 2014-01-12 09:00:51 -05:00
freedreno_pipe.c freedreno: support either kgsl or msm 2013-08-28 15:50:15 -04:00
freedreno_priv.h freedreno: some msm-ring reset/flush fixes 2014-02-19 11:47:40 -05:00
freedreno_ringbuffer.c freedreno: some msm-ring reset/flush fixes 2014-02-19 11:47:40 -05:00
freedreno_ringbuffer.h freedreno: allow IB to different ringbuffer 2014-01-07 11:33:54 -05:00
libdrm_freedreno.pc.in freedreno: add freedreno DRM 2013-02-14 12:13:15 -05:00
list.h freedreno: add freedreno DRM 2013-02-14 12:13:15 -05:00

README 

Note that current msm kernel driver is a bit strange.  It provides a
DRM interface for GEM, which is basically sufficient to have DRI2
working.  But it does not provide KMS.  And interface to 2d and 3d
cores is via different other devices (/dev/kgsl-*).  This is not
quite how I'd write a DRM driver, but at this stage it is useful for
xf86-video-freedreno and fdre (and eventual gallium driver) to be
able to work on existing kernel driver from QCOM, to allow to
capture cmdstream dumps from the binary blob drivers without having
to reboot.  So libdrm_freedreno attempts to hide most of the crazy.
The intention is that when there is a proper kernel driver, it will
be mostly just changes in libdrm_freedreno to adapt the gallium
driver and xf86-video-freedreno (ignoring the fbdev->KMS changes).

So don't look at freedreno as an example of how to write a libdrm
module or a DRM driver.. it is just an attempt to paper over a non-
standard kernel driver architecture.