Commit graph

66 commits

Author SHA1 Message Date
Martin Peres
a599b1c203 loader/dri3: import prime buffers in the currently-bound screen
This tries to mirrors the codepath taken by DRI2 in IntelSetTexBuffer2()
and fixes many applications when using DRI3:
 - Totem with libva on hw-accelerated decoding
 - obs-studio, using Window Capture (Xcomposite) as a Source
 - gstreamer with VAAPI

v2:
 - introduce get_dri_screen() in the dri3 loader's vtable (krh)

Tested-by: Timo Aaltonen <tjaalton@ubuntu.com>
Tested-by: Ionut Biru <biru.ionut@gmail.com>
Cc: mesa-stable@lists.freedesktop.org
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=71759
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Martin Peres <martin.peres@linux.intel.com>
2016-10-07 11:11:55 +03:00
Martin Peres
0247e5ee3e loader/dri3: add get_dri_screen() to the vtable
This allows querying the current active screen from the
loader's common code.

Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Signed-off-by: Martin Peres <martin.peres@linux.intel.com>
2016-10-07 11:11:44 +03:00
Michel Dänzer
dc3bb5db8c loader/dri3: Always use at least two back buffers
This can make a significant difference for performance with some extreme
test cases such as vblank_mode=0 glxgears.

Fixes: 1e3218bc5b ("loader/dri3: Overhaul dri3_update_num_back")
Cc: "12.0 11.2" <mesa-stable@lists.freedesktop.org>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97549
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Tested-by: Dieter Nützel <Dieter@nuetzel-hh.de>
2016-09-06 13:04:48 +09:00
Frank Binns
d5f65b8bf5 loader: fix sysfs uevent file parsing
When trying to get a device name for an fd using sysfs, it would always fail
as it was expecting key/value pairs to be delimited by '\0', which is not the
case.

Signed-off-by: Frank Binns <frank.binns@imgtec.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
2016-09-01 15:48:34 +01:00
Ilia Mirkin
91681302d0 nouveau: allow NV3x's to be used with nouveau_vieux
NV34 and possibly other NV3x hardware has the capability of exposing the
NV25 graph class. This allows forcing nouveau_vieux to be used instead
of the gallium driver, primarily for testing purposes. (Among other
things, NV2x only ever came as AGP or inside an Xbox, never PCI/PCIe).

Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
2016-08-30 00:21:42 -04:00
Michel Dänzer
1e3218bc5b loader/dri3: Overhaul dri3_update_num_back
Always use 3 buffers when flipping. With only 2 buffers, we have to wait
for a flip to complete (which takes non-0 time even with asynchronous
flips) before we can start working on the next frame. We were previously
only using 2 buffers for flipping if the X server supports asynchronous
flips, even when we're not using asynchronous flips. This could result
in bad performance (the referenced bug report is an extreme case, where
the inter-frame stalls were preventing the GPU from reaching its maximum
clocks).

I couldn't measure any performance boost using 4 buffers with flipping.
Performance actually seemed to go down slightly, but that might have
been just noise.

Without flipping, a single back buffer is enough for swap interval 0,
but we need to use 2 back buffers when the swap interval is non-0,
otherwise we have to wait for the swap interval to pass before we can
start working on the next frame. This condition was previously reversed.

Cc: "12.0 11.2" <mesa-stable@lists.freedesktop.org>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97260
Reviewed-by: Frank Binns <frank.binns@imgtec.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
2016-08-25 17:40:24 +09:00
Michel Dänzer
5d191bafa2 loader/dri3: Destroy Present event context when destroying drawable v2
Without this, the X server may accumulate stale Present event contexts
if a client ends up creating and destroying DRI drawables for the same
window.

v2: Based on Chris Wilson's review:
* Use xcb_present_select_input_checked so that protocol errors
  generated by old X servers can be handled gracefully
* Use xcb_discard_reply() instead of free(xcb_request_check())
2016-08-04 15:45:43 +09:00
Jan Ziak
fd32868590 loader: fix memory leak in loader_dri3_open
Found via "valgrind --leak-check=full glxgears".

Signed-off-by: Jan Ziak (http://atom-symbol.net) <0xe2.0x9a.0x9b@gmail.com>
Acked-by: Boyan Ding <boyan.j.ding@gmail.com>
Cc: "12.0 11.2" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
2016-08-03 10:25:09 -07:00
Matt Turner
20553e4a2d mesa: Use AC_HEADER_MAJOR to include correct header for major().
Gentoo has been smoke testing an upcoming change to glibc.

Bugzilla: https://bugs.gentoo.org/show_bug.cgi?id=580392
2016-07-26 12:12:41 -07:00
Rob Herring
112e988329 Android: move libdrm settings to top-level Android.common.mk
Fix warnings like these due to HAVE_LIBDRM being inconsistently defined:

external/libdrm/include/drm/drm.h:839:30: warning: redefinition of typedef 'drm_clip_rect_t' is a C11 feature [-Wtypedef-redefinition]
typedef struct drm_clip_rect drm_clip_rect_t;

HAVE_LIBDRM needs to be set project wide to fix this. This change also
harmlessly links libdrm with everything, but simplifies the makefiles a
bit.

Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Emil Velikov <emil.velikov@collabora.com>
2016-06-13 15:31:29 +01:00
Jonathan Gray
28e3ae344b loader: add a libdrm case for loader_get_device_name_for_fd
Use dev_node_from_fd() with HAVE_LIBDRM to provide an implmentation
of loader_get_device_name_for_fd() for non-linux systems that
use libdrm but don't have udev or sysfs.

Signed-off-by: Jonathan Gray <jsg@jsg.id.au>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
2016-04-21 14:41:41 +01:00
Axel Davy
d943ac432d dri: add backbuffer use flag
This will be used by the next commit.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
2016-03-09 15:02:25 +01:00
Rob Herring
657dc4f533 virtio_gpu: Add PCI ID to driver map
Add the virtio-gpu PCI ID so the driver probing works.

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2016-01-23 12:35:24 +10:00
Emil Velikov
b9b0a1f58e loader: unconditionally add AM_CPPFLAGS to libloader_la_CPPFLAGS
It seems that due to the conditional autotools is getting confused and
forgetting to add AM_CPPFLAGS when building libloader (when
HAVE_DRICOMMON is not set).

Cc: mesa-stable@lists.freedesktop.org
Fixes: 5a79e0a8e3 "automake: loader: rework the CPPFLAGS"
Reported-by: Pali Rohár <pali.rohar@gmail.com>
Tested-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
2015-11-23 12:07:50 +00:00
Emil Velikov
7157085140 automake: loader: don't create an empty dri3 helper
Seems that creating an empty one does not fair too well with MacOSX's
ar. Considering that all the users of the helper include it only when
needed, let's reshuffle the makefile.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92985
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Tested-by: Vinson Lee <vlee@freedesktop.org>
Tested-by: Kai Wasserbäch <kai@dev.carbon-project.org>
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>
Reviewed-by: Matt Turner <mattst88@gmail.com>
2015-11-20 10:40:35 +00:00
Emil Velikov
115f179852 automake: loader: honour the XCB_DRI3 cflags
Without this the compilation will fail, as the headers are installed in
a non-default location.

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Tested-by: Kai Wasserbäch <kai@dev.carbon-project.org>
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>
Reviewed-by: Matt Turner <mattst88@gmail.com>
2015-11-20 10:40:29 +00:00
Emil Velikov
5a79e0a8e3 automake: loader: rework the CPPFLAGS
Rather than duplicating things, just use the generic AM_CPPFLAGS. This
has the fortunate side-effect of adding VISIBILITY_CFLAGS for the dri3
helper. The latter of which was erroneously exposing some internal
symbols.

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reported-by: Kai Wasserbäch <kai@dev.carbon-project.org>
Tested-by: Kai Wasserbäch <kai@dev.carbon-project.org>
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>
Reviewed-by: Matt Turner <mattst88@gmail.com>
2015-11-20 10:40:11 +00:00
Boyan Ding
bd6131a8d1 loader/dri3: Expose function to create __DRIimage from pixmap
Used to support EGL_KHR_image_pixmap.

Signed-off-by: Boyan Ding <boyan.j.ding@gmail.com>
Reviewed-by: Martin Peres <martin.peres@linux.intel.com>
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>
Reviewed-by: Emil Velikov <emil.velikov@collabora.co.uk>
2015-11-17 17:26:20 +02:00
Boyan Ding
6bd9ba7d07 loader: Add dri3 helper
v2: From Martin Peres
 - Try to fit in the 80-col limit as much as possible

v3: From Martin Peres
 - introduce loader_dri3_helper.la to avoid dragging the xcb dep everywhere (Kristian & Emil)
 - get rid of the width, height, dri_screen and is_different_gpu vfuncs (Kristian)
 - replace the create/destroy functions with init/fini for dri3 drawables
 - prefix static functions with dri3_ and exported ones with loader_dri3 (Emil)
 - keep the function definition consistent (Emil)

Signed-off-by: Boyan Ding <boyan.j.ding@gmail.com>
Signed-off-by: Martin Peres <martin.peres@linux.intel.com>
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>
Reviewed-by: Emil Velikov <emil.velikov@collabora.co.uk>
2015-11-17 17:26:20 +02:00
Emil Velikov
1c328b8aa7 loader: use HAVE_LIBDRM instead of ! __NOT_HAVE_DRM_H
Double negatives in English language are normally avoided, plus the
former seems cleaner and more consistent.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
2015-07-22 16:35:25 +01:00
Guillaume Desmottes
8108de4774 loader: don't leak udev_enumerate
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=90073
Signed-off-by: Guillaume Desmottes <guillaume.desmottes@collabora.co.uk>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
2015-07-11 20:49:25 +01:00
Chris Wilson
f241345793 loader: Look for any version of currently linked libudev.so
Since there was an ABI break and linking twice against libudev.so.0 and
libudev.so.1 causes the application to quickly crash, we first check if
the application is currently linked against libudev before dlopening a
local handle. However for backwards/forwards compatability, we need to
inspect the application for current linkage against all known versions
first. Not doing so causes a crash when both libraries are present and
so mesa chooses libudev.so.1 but the application was linked against
libudev.so.0.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

Emil Velikov:

I'm ever so slightly conserned that RTLD_NOLOAD is not part of the POSIX
standard, thus it's missing on some platforms (*BSD seems ok, while
Solaris, MacOS are not).

Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Cc: mesa-stable@lists.freedesktop.org
2015-07-08 11:04:02 +01:00
Julien Isorce
30d67d3824 loader: move loader_open_device out of HAVE_LIBUDEV block
Fixes the following build issue, when building without libudev.

CCLD   libGL.la
./.libs/libglx.a(dri2_glx.o): In function `dri2CreateScreen':
src/glx/dri2_glx.c:1186: undefined reference to `loader_open_device'
collect2: ld returned 1 exit status

CCLD     libEGL.la
Undefined symbols for architecture x86_64:
"_loader_open_device", referenced from:
  _dri2_initialize_x11_dri2 in libegl_dri2.a(platform_x11.o)

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=91077
Signed-off-by: Julien Isorce <j.isorce@samsung.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
2015-06-24 13:43:44 +01:00
Derek Foreman
9c92746349 loader: Rename drm_open_device() to loader_open_device() and share it
This is already our common idiom for opening files with CLOEXEC and
it's a little ugly, so let's share this one implementation.

Signed-off-by: Derek Foreman <derekf@osg.samsung.com>
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
2015-06-23 16:54:51 +01:00
Erik Faye-Lund
634f200256 mesa: build xmlconfig to a separate static library
As we use the file from both the dri modules and loader, we end up with
multiple definition of the symbols provided in our gallium dri  modules.
Additionally we compile the file twice.

Resolve both issues, effectively enabling the build on toolchains which
don't support -Wl,--allow-multiple-definition.

v2: [Emil Velikov]
 - Fix the Scons/Android build.
 - Resolve libgbm build issues (bring back the missing -lm)

Cc: Julien Isorce <j.isorce@samsung.com>
Cc: "10.5 10.6" <mesa-stable@lists.freedesktop.org>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=90310
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=90905
Acked-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
2015-06-12 15:32:18 +01:00
Chih-Wei Huang
b8213bbe4c android: loader: export the path to be included
Signed-off-by: Chih-Wei Huang <cwhuang@linux.org.tw>
Reviewed-by: Eric Anholt <eric@anholt.net>
2015-06-09 11:38:44 -07:00
Alexander von Gluck IV
8362068c1b egl: Add needed extern "C" for C++ access
* Haiku's egl driver is C++ due to the interface natively being C++

Reviewed-⁠by: Brian Paul <brianp@vmware.com>
2015-05-14 14:08:37 -04:00
Zoë Blade
05e7f7f438 Fix a few typos
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
2015-04-27 17:28:29 +03:00
Emil Velikov
86919352e3 android: use LOCAL_SHARED_LIBRARIES over TARGET_OUT_HEADERS
... to manage the LIBDRM*_CFLAGS. The former is the recommended approach
by the Android build system developers while the latter has been
depreciated for quite some time.

Cc: "10.4 10.5" <mesa-stable@lists.freedesktop.org>
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
2015-04-22 14:23:28 +01:00
Jose Fonseca
47870d658b scons: Don't build loader on Windows.
EGL was the last user.

Reviewed-by: Brian Paul <brianp@vmware.com>
2015-03-25 10:42:35 +00:00
Emil Velikov
771cd266b9 loader: include <sys/stat.h> for non-sysfs builds
Required by fstat(), otherwise we'll error out due to implicit function
declaration.

Cc: "10.4 10.5" <mesa-stable@lists.freedesktop.org>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89530
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reported-by: Vadim Rutkovsky <vrutkovs@redhat.com>
Tested-by: Vadim Rutkovsky <vrutkovs@redhat.com>
2015-03-16 20:48:07 +00:00
Jose Fonseca
00faf9f000 scons: Use -Werror MSVC compatibility flags per-directory.
Matching what we already do with autotools builds.

Reviewed-by: Brian Paul <brianp@vmware.com>
2015-03-04 15:12:06 +00:00
Jose Fonseca
80c5bd7ef0 configure: Leverage gcc warn options to enable safe use of C99 features where possible.
The main objective of this change is to enable Linux developers to use
more of C99 throughout Mesa, with confidence that the portions that need
to be built with MSVC -- and only those portions --, stay portable.

This is achieved by using the appropriate -Werror= options only on the
places they need to be used.

Unfortunately we still need MSVC 2008 on a few portions of the code
(namely llvmpipe and its dependencies).  I hope to eventually eliminate
this so that we can use C99 everywhere, but there are technical/logistic
challenges (specifically, newer Windows SDKs no longer bundle MSVC,
instead require a full installation of Visual Studio, and that has
hindered adoption of newer MSVC versions on our build processes.)
Thankfully we have more directy control over our OpenGL driver, which is
why we're now able to migrate to MSVC 2013 for most of the tree.

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
2015-03-03 09:25:11 +00:00
Kenneth Graunke
982723dfa2 Revert "configure: Leverage gcc warn options to enable safe use of C99 features where possible."
This reverts commit 79daa510c7.

I apparently hadn't done a clean build when testing this; it broke the
build for Tom, Ben, and myself.  We like the idea; let's try a v2.
2015-02-27 16:13:10 -08:00
Jose Fonseca
79daa510c7 configure: Leverage gcc warn options to enable safe use of C99 features where possible.
The main objective of this change is to enable Linux developers to use
more of C99 throughout Mesa, with confidence that the portions that need
to be built with MSVC -- and only those portions --, stay portable.

This is achieved by using the appropriate -Werror= options only on the
places they need to be used.

Unfortunately we still need MSVC 2008 on a few portions of the code
(namely llvmpipe and its dependencies).  I hope to eventually eliminate
this so that we can use C99 everywhere, but there are technical/logistic
challenges (specifically, newer Windows SDKs no longer bundle MSVC,
instead require a full installation of Visual Studio, and that has
hindered adoption of newer MSVC versions on our build processes.)
Thankfully we have more directy control over our OpenGL driver, which is
why we're now able to migrate to MSVC 2013 for most of the tree.

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
2015-02-27 14:30:36 +00:00
Rob Clark
9153dd4b7e loader: not having a pci-id should not be a warn
If there is no pci-id, which is valid for vc4 and freedreno, just emit
an info msg.  Keep malformed but existing pci-id's as a warning.

Mostly just to clean up a warning that confuses users for the non-pci
devices.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
2015-02-21 17:11:02 -05:00
Matt Turner
9b5efac461 loader: Remove NEED_OPENGL_COMMON check.
HAVE_DRICOMMON is sufficient since OpenGL must be enabled for DRI.
2015-01-23 14:28:44 -08:00
Matt Turner
952b324b23 mesa: Add scons files to distribution. 2014-12-12 12:11:50 -08:00
Matt Turner
9f565f5f8a loader: Add headers to distribution. 2014-12-12 12:11:47 -08:00
Michael Forney
5d64da401c loader: Add missing EXPAT_CFLAGS to libloader.la CPPFLAGS
Reviewed-by: Matt Turner <mattst88@gmail.com>
2014-12-08 08:50:27 -08:00
Juha-Pekka Heikkila
261120daef loader: Check dlsym() did not fail in libudev_get_device_name_for_fd()
Signed-off-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Reviewed-by: Anuj Phogat <anuj.phogat@gmail.com>
2014-09-23 10:25:02 +03:00
Dave Airlie
291ae622fd loader: fds can be 0
Possible resource leak reported by coverity.

Reported-by: Coverity scanner.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-09-06 10:24:25 +10:00
Emil Velikov
73121a34d4 android: loader: prefix static libraries with libmesa_*
Will make it easier on us as CleanSpec.mk comes along and improves
consistency across the Android build.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
2014-08-13 00:46:57 +01:00
Emil Velikov
5f3022e97f android: loader: use the installed libdrm headers
One step closer to the way we handle automake builds.

Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
2014-08-13 00:46:56 +01:00
Jason Ekstrand
efa0aa8ffc util: Gather some common macros
This gathers macros that have been included across components into util so
that the include chain can be more vertical.  In particular, this makes
util stand on its own without any dependence whatsoever on the rest of
mesa.

Signed-off-by: "Jason Ekstrand" <jason.ekstrand@intel.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
2014-08-04 11:07:10 -07:00
Axel Davy
4d6c9352f3 mesa: fix the condition in src/loader/Makefile.am
We want to have the dri common files compiled to define USE_DRICONF.
We need to check both NEED_OPENGL_COMMON and HAVE_DRICOMMON

Signed-off-by: Axel Davy <axel.davy@ens.fr>
Tested-by: Brian Paul <brianp@vmware.com>
2014-07-01 09:42:44 -06:00
Axel Davy
3ecd9e1a93 loader: Use drirc device_id parameter in complement to DRI_PRIME
DRI_PRIME is not very handy, because you have to launch the executable
with it set, which is not always easy to do.
By using drirc, the user specifies the target executable
and the device to use. After that the program will be launched everytime
on the target device.

For example if .drirc contains:

<driconf>
    <device driver="loader">
        <application name="Glmark2" executable="glmark2">
            <option name="device_id" value="pci-0000_01_00_0" />
        </application>
    </device>
</driconf>

Then glmark2 will use if possible the render-node of
ID_PATH_TAG pci-0000_01_00_0.

v2: Fix compilation issue
v3: Add "-lm" and rebase.

Signed-off-by: Axel Davy <axel.davy@ens.fr>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-07-01 13:07:40 +10:00
Axel Davy
7ab925a6aa loader: add gpu selection code via DRI_PRIME.
v2: Fix the leak of device_name
v3: Rebased

It enables to use the DRI_PRIME env var to specify
which gpu to use.
Two syntax are supported:
If DRI_PRIME is 1 it means: take any other gpu than the default one.
If DRI_PRIME is the ID_PATH_TAG of a device: choose this device if
possible.

The ID_PATH_TAG is a tag filled by udev.
You can check it with 'udevadm info' on the device node.
For example it can be "pci-0000_01_00_0".

Render-nodes need to be enabled to choose another gpu,
and they need to have the ID_PATH_TAG advertised.
It is possible for not very recent udev that the tag
is not advertised for render-nodes, then
ones need to add a file containing:

SUBSYSTEM=="drm", IMPORT{builtin}="path_id"

in /etc/udev/rules.d/

Signed-off-by: Axel Davy <axel.davy@ens.fr>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2014-07-01 13:07:30 +10:00
Gary Wong
85b6f36ca5 loader: add optional /sys filesystem method for PCI identification.
Introduce a simple PCI identification method of looking up the answer
the /sys filesystem (available on Linux).  Attempted after libudev, but
before DRM.

Disabled by default (available only when the --enable-sysfs configure
option is specified).

Signed-off-by: Gary Wong <gtw@gnu.org>
Acked-by: Emil Velikov <emil.l.velikov@gmail.com>
2014-05-29 20:25:37 -06:00
Gary Wong
090c772b8a loader: allow attempting more than one method of PCI identification.
loader_get_pci_id_for_fd() and loader_get_device_name_for_fd() now attempt
all available strategies to identify the hardware, instead of conditionally
compiling in a single test.  The existing libudev and DRM approaches have
been retained, attempting first libudev (if available) and then DRM (if
necessary).

Signed-off-by: Gary Wong <gtw@gnu.org>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
2014-05-29 20:25:37 -06:00