linux.git/include/uapi/drm/drm.h, branch v4.13-rc2

drm/syncobj: add sync_file interaction. (v1.2)

2017-06-14T02:11:04+00:00

This interface allows importing the fence from a sync_file into
an existing drm sync object, or exporting the fence attached to
an existing drm sync object into a new sync file object.

This should only be used to interact with sync files where necessary.

v1.1: fence put fixes (Chris), drop fence from ioctl names (Chris)
fixup for new fence replace API.

Reviewed-by: Sean Paul 
Reviewed-by: Chris Wilson 
Signed-off-by: Dave Airlie

drm: introduce sync objects (v4)

2017-06-14T02:10:22+00:00

Sync objects are new toplevel drm object, that contain a
pointer to a fence. This fence can be updated via command
submission ioctls via drivers.

There is also a generic wait obj API modelled on the vulkan
wait API (with code modelled on some amdgpu code).

These objects can be converted to an opaque fd that can be
passes between processes.

v2: rename reference/unreference to put/get (Chris)
fix leaked reference (David Zhou)
drop mutex in favour of cmpxchg (Chris)
v3: cleanups from danvet, rebase on drm_fops rename
check fd_flags is 0 in ioctls.
v4: export find/free, change replace fence to take a
syncobj. In order to support lookup first, replace
later semantics which seem in the end to be cleaner.

Reviewed-by: Sean Paul 
Reviewed-by: Chris Wilson 
Signed-off-by: Dave Airlie

drm: Pass CRTC ID in userspace vblank events

2017-04-04T19:59:12+00:00

With the atomic API, it is possible that a single commit affects
multiple crtcs. If the user requests an event with that commit, one
event will be sent for each CRTC, but it is not possible to distinguish
which crtc an event is for in user space. To solve this, the reserved
field in struct drm_vblank_event is repurposed to include the crtc_id
which the event is for.

The DRM_CAP_CRTC_IN_VBLANK_EVENT is added to allow userspace to query if
the crtc field will be set properly.

[daniels: Rebased, using Maarten's forward-port.]

Signed-off-by: Ander Conselvan de Oliveira 
Signed-off-by: Daniel Stone 
Cc: Maarten Lankhorst 
Link: http://patchwork.freedesktop.org/patch/msgid/20170404165221.28240-2-daniels@collabora.com

drm: Add DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE/RELATIVE flags v2

2016-08-10T18:28:09+00:00

These flags allow userspace to explicitly specify the target vertical
blank period when a flip should take effect.

v2:
* Add new struct drm_mode_crtc_page_flip_target instead of modifying
  struct drm_mode_crtc_page_flip, to make sure all existing userspace
  code keeps compiling (Daniel Vetter)

Acked-by: Christian König 
Reviewed-by: Daniel Vetter 
Signed-off-by: Michel Dänzer 
Signed-off-by: Alex Deucher

drm: add extern C guard for the UAPI headers

2016-05-13T12:57:17+00:00

Signed-off-by: Emil Velikov

drm: Make uapi headers C89 pendantic compliant

2016-03-31T05:57:50+00:00

This ports the below libdrm commit to the kernel

commit 0f4452bb51306024fbf4cbf77d8baab20cefba67
Author: Daniel Kurtz 
Date:   Mon Aug 26 23:39:16 2013 +0800

    libdrm: Make some drm headers compatible with gcc -std=c89 -pedantic

    The following minor changes were needed to these headers:
     * Convert // comments to /* */
     * No , after final member of enum

    With these changes, these header files can be included by a program that
    is built with gcc options:
      -std=c89 -Werror -pedantic

    Signed-off-by: Daniel Kurtz 
    Signed-off-by: Eric Anholt 
    Reviewed-by: Eric Anholt 

Reviewed-by: Emil Velikov 
Signed-off-by: Daniel Vetter 
Link: http://patchwork.freedesktop.org/patch/msgid/1459348943-12803-2-git-send-email-daniel.vetter@ffwll.ch

drm: Untangle KERNEL guards

2016-03-30T19:09:33+00:00

make headers_install can't handle fancy conditions, so let's simplify
things for it a bit.

Cc: Emil Velikov 
Reviewed-by: Emil Velikov 
Signed-off-by: Daniel Vetter 
Link: http://patchwork.freedesktop.org/patch/msgid/1459348943-12803-1-git-send-email-daniel.vetter@ffwll.ch

drm: align #include directives with libdrm in uapi headers

2016-03-30T19:08:09+00:00

We can't use  because that upsets the serach paths in libdrm.
Also, drop the circular inclusion in drm_mode.h.

v2: Actually change the right headers.

v3: Drop the #include removal per Emil's request.

Cc: Emil Velikov 
Reviewed-by: Emil Velikov 
Signed-off-by: Daniel Vetter 
Link: http://patchwork.freedesktop.org/patch/msgid/1459353292-9063-1-git-send-email-daniel.vetter@ffwll.ch

drm: Make drm.h uapi header safe for C++

2016-03-30T19:07:45+00:00

virtual is a protected keyword in C++ and can't be used at all. Ugh.

This aligns the kernel versions of the drm headers with the ones in
libdrm.

v2: Also annote with __user, as request by Emil&Ilia.

Cc: Ilia Mirkin 
Cc: Emil Velikov 
Reviewed-by: Emil Velikov 
Signed-off-by: Daniel Vetter 
Link: http://patchwork.freedesktop.org/patch/msgid/1459350753-18320-1-git-send-email-daniel.vetter@ffwll.ch

drm: prime: Honour O_RDWR during prime-handle-to-fd

2016-02-09T08:25:12+00:00

Currently DRM_IOCTL_PRIME_HANDLE_TO_FD rejects all flags except
(DRM|O)_CLOEXEC making it difficult (maybe impossible) for userspace
to mmap() the resulting dma-buf even when this is supported by the
DRM driver.

It is trivial to relax the restriction and permit read/write access.
This is safe because the flags are seldom touched by drm; mostly they
are passed verbatim to dma_buf calls.

v3 (Tiago): removed unused flags variable from drm_prime_handle_to_fd_ioctl.

Reviewed-by: Chris Wilson 
Signed-off-by: Daniel Thompson 
Signed-off-by: Tiago Vignatti 
Reviewed-by: Stéphane Marchesin 
Signed-off-by: Daniel Vetter 
Link: http://patchwork.freedesktop.org/patch/msgid/1450820214-12509-2-git-send-email-tiago.vignatti@intel.com