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Yang Rong 98887140e3 intel: Export pooled EU and min no. of eus in a pool.
Update kernel interface with new I915_GETPARAM ioctl entries for
pooled EU and min no. of eus in a pool. Add a wrapping function
for each parameter. Userspace drivers need these values when decide
the thread count. This kernel enabled pooled eu by default for BXT
and for fused down 2x6 parts it is advised to turn it off.

But there is another HW issue in these parts (fused
down 2x6 parts) before C0 that requires Pooled EU to be enabled as a
workaround. In this case the pool configuration changes depending upon
which subslice is disabled and the no. of eus in a pool is different,
So userspace need to know min no. of eus in a pool.

V2: use return value as the query results.
    ret < 0 when error, ret = 0 when not support, and ret > 0 indicate
    query results.(Chris)
V3: Correct V2 errors.

Signed-off-by: Yang Rong <rong.r.yang@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
2016-09-07 13:50:23 +01:00
amdgpu amdgpu: add SI support 2016-09-05 15:46:29 +02:00
exynos exynos: Fix spelling mistake 2016-04-07 18:15:52 +01:00
freedreno automake: Don't include Android Makefiles in the release tarball 2016-07-23 09:45:53 +02:00
include/drm intel: Export pooled EU and min no. of eus in a pool. 2016-09-07 13:50:23 +01:00
intel intel: Export pooled EU and min no. of eus in a pool. 2016-09-07 13:50:23 +01:00
libkms automake: Don't include Android Makefiles in the release tarball 2016-07-23 09:45:53 +02:00
m4 build: Update autotools configuration 2011-03-21 13:43:43 +00:00
man man: Fix typo 2016-07-23 09:45:53 +02:00
nouveau automake: Don't include Android Makefiles in the release tarball 2016-07-23 09:45:53 +02:00
omap omap: Initialize DMA BUF file descriptor to -1 2015-08-26 15:15:54 +02:00
radeon radeon: sync radeon_drm.h with the kernel 2016-09-05 15:43:22 +02:00
tegra drm: remove drm_public macro 2015-04-28 11:19:15 +01:00
tests modetest: Also print the pixel clock 2016-09-01 16:02:46 +01:00
vc4 vc4: Add headers and .pc files for VC4 userspace development. 2016-02-03 11:29:52 -08:00
.gitignore gitignore: ignore kms-steal-crtc and kms-universal-planes 2016-03-28 22:12:54 +01:00
Android.mk Android: strip out header files from sources list 2016-07-06 16:58:38 +01:00
CleanSpec.mk tests: Split helpers into library 2015-12-18 17:43:40 +00:00
Makefile.am automake: Don't include Android Makefiles in the release tarball 2016-07-23 09:45:53 +02:00
Makefile.sources automake: Include virtgpu_drm.h in the release tarball 2016-07-23 09:45:53 +02:00
README Update README 2009-11-20 17:08:28 -05:00
RELEASING Simplify the RELEASING steps based on current release.sh. 2016-07-24 18:36:34 -07:00
autogen.sh autogen.sh: handle out-of-tree invokation 2015-03-17 22:35:51 +00:00
configure.ac Bump version for release 2016-07-23 09:25:48 -04:00
libdrm.pc.in Revert "Fix pkgconfig includes for /usr/include/drm" 2010-04-09 16:33:38 -04:00
libdrm_lists.h lists: add nicer+unsafe foreach, and list join macros 2012-04-14 02:47:04 +10:00
libdrm_macros.h drm: remove drm_public macro 2015-04-28 11:19:15 +01:00
util_double_list.h list: fix an issue with android build using clang 2016-08-02 16:22:45 -04:00
util_math.h util_math: add MAX3 macro 2015-09-21 17:42:51 +01:00
xf86atomic.h Fix SunOS/NetBSD atomic macro 2015-09-21 17:43:14 +01:00
xf86drm.c drm: fix drmFreeDevices memory leak on multi GPU setups 2016-07-20 23:44:40 +01:00
xf86drm.h xf86drm: add drm{Get,Free}Device 2015-09-21 17:43:08 +01:00
xf86drmHash.c drm: use correct printf modifiers 2015-04-05 15:33:33 +01:00
xf86drmHash.h tests/hash: extract test out of xf86drmHash.c 2015-04-05 15:19:42 +01:00
xf86drmMode.c xf86drm: Fix spelling mistakes 2016-04-07 18:16:01 +01:00
xf86drmMode.h remove usage of 'c_plusplus' preprocessor macro 2015-08-10 11:25:39 +03:00
xf86drmRandom.c drm: replace HASH_DEBUG with DEBUG 2015-04-05 15:33:33 +01:00
xf86drmRandom.h tests/random: extract test out of xf86drmRandom.c 2015-04-05 15:33:33 +01:00
xf86drmSL.c drm: replace HASH_DEBUG with DEBUG 2015-04-05 15:33:33 +01:00

README

libdrm - userspace library for drm

This  is libdrm,  a userspace  library for  accessing the  DRM, direct
rendering  manager, on  Linux,  BSD and  other  operating systes  that
support the  ioctl interface.  The library  provides wrapper functions
for the  ioctls to avoid  exposing the kernel interface  directly, and
for chipsets with drm memory manager, support for tracking relocations
and  buffers.   libdrm  is  a  low-level library,  typically  used  by
graphics drivers  such as the Mesa  DRI drivers, the  X drivers, libva
and  similar projects.  New  functionality in  the kernel  DRM drivers
typically requires  a new  libdrm, but a  new libdrm will  always work
with an older kernel.


Compiling
---------

libdrm  is  a  standard  autotools  packages and  follows  the  normal
configure, build  and install steps.   The first step is  to configure
the package, which is done by running the configure shell script:

	./configure

By default, libdrm  will install into the /usr/local/  prefix.  If you
want  to  install   this  DRM  to  replace  your   system  copy,  pass
--prefix=/usr and  --exec-prefix=/ to configure.  If  you are building
libdrm  from a  git checkout,  you first  need to  run  the autogen.sh
script.  You can  pass any options to autogen.sh  that you would other
wise  pass to configure,  or you  can just  re-run configure  with the
options you need once autogen.sh finishes.

Next step is to build libdrm:

	make

and once make finishes successfully, install the package using

	make install

If you are install into a system location, you will need to be root to
perform the install step.