Commit Graph

125 Commits

Author SHA1 Message Date
Dave Airlie
2c07d5a8b8 This pull request brings in interlaced vblank timing and a 3D
rendering memory/CPU overhead reduction.
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Merge tag 'drm-vc4-next-2016-08-29' of https://github.com/anholt/linux into drm-next

This pull request brings in interlaced vblank timing and a 3D
rendering memory/CPU overhead reduction.

* tag 'drm-vc4-next-2016-08-29' of https://github.com/anholt/linux:
  drm/vc4: Don't force new binner overflow allocation per draw.
  drm/vc4: Enable/Disable vblanks properly in crtc en/disable.
  drm/vc4: Enable precise vblank timestamping for interlaced modes.
  drm/vc4: Reject doublescan modes.
  drm/vc4: Fix handling of interlaced video modes.
  drm/vc4: Disallow interlaced modes on DPI.
2016-09-02 15:50:19 +10:00
Liu Ying
2b58e98d42 drm/atomic-helper: Add NO_DISABLE_AFTER_MODESET flag support for plane commit
Drivers may set the NO_DISABLE_AFTER_MODESET flag in the 'flags' parameter
of the helper drm_atomic_helper_commit_planes() if the relevant display
controllers(e.g., IPUv3 for imx-drm) require to disable a CRTC's planes
when the CRTC is disabled. The helper would skip the ->atomic_disable
call for a plane if the CRTC of the old plane state needs a modesetting
operation. Of course, the drivers need to disable the planes in their CRTC
disable callbacks since no one else would do that.

Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: David Airlie <airlied@linux.ie>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Peter Senna Tschudin <peter.senna@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Liu Ying <gnuiyl@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1472461923-14364-1-git-send-email-gnuiyl@gmail.com
2016-08-29 11:29:37 +02:00
Eric Anholt
67f13690f4 drm/vc4: Don't force new binner overflow allocation per draw.
This came from the initial bringup code, which always idled the GPU
and always reset the overflow.  That massively increases the size of
the working set when you're doing lots of small draws, though, as is
common on X desktops or piglit.

Signed-off-by: Eric Anholt <eric@anholt.net>
2016-08-19 19:36:22 -07:00
Mario Kleiner
e941f05d3c drm/vc4: Enable/Disable vblanks properly in crtc en/disable.
Add missing drm_crtc_vblank_on/off() calls so vblank irq
handling/updating/timestamping never runs with a crtc shut down
or during its shutdown/startup, as that causes large jumps in
vblank count and trouble for compositors.

Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
2016-08-19 19:05:59 -07:00
Mario Kleiner
e538092cb1 drm/vc4: Enable precise vblank timestamping for interlaced modes.
On top of the interlaced video mode fix and with some additional
adjustments, this now works well. It has almost the same accuracy
as on regular progressive scan modes.

Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
2016-08-19 19:05:56 -07:00
Mario Kleiner
3645146706 drm/vc4: Reject doublescan modes.
We can't handle doublescan modes at the moment, so if
userspace tries to set one, reject the mode set.

Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
2016-08-19 19:05:52 -07:00
Mario Kleiner
acc1be1d35 drm/vc4: Fix handling of interlaced video modes.
We must not apply CRTC_INTERLACE_HALVE_V to interlaced modes during
mode enumeration, as drm_helper_probe_single_connector_modes
does, so wrap it and reset the effect of CRTC_INTERLACE_HALVE_V
on affected interlaced modes.

Also mode_fixup interlaced modes passed in from user space.

This fixes the vblank timestamping constants and entries in
the mode->crtc_xxx fields needed for precise vblank timestamping.

Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
2016-08-19 19:05:49 -07:00
Mario Kleiner
e2298350de drm/vc4: Disallow interlaced modes on DPI.
We already don't expose such modes to userspace, but make
sure userspace can't sneak some interlaced mode in.

Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
2016-08-19 19:05:43 -07:00
Laurent Pinchart
420382adf6 drm: Don't implement empty prepare_fb()/cleanup_fb()
The plane .prepare_fb() and .cleanup_fb() helpers are optional, there's
no need to implement empty stubs, and no need to explicitly set the
function pointers to NULL either.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
[danvet: Resolved conflicts with Chris' patch.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2016-08-19 10:58:55 +02:00
Daniel Vetter
44adece57e drm/fb-helper: Add a dummy remove_conflicting_framebuffers
Lots of drivers don't properly compile without this when CONFIG_FB=n.
It's kinda a hack, but since CONFIG_FB doesn't stub any fucntions when
it's disabled I think it makes sense to add it to drm_fb_helper.h.

Long term we probably need to rethink all the logic to unload firmware
framebuffer drivers, at least if we want to be able to move away from
CONFIG_FB and fbcon.

v2: Unfortunately just stubbing out remove_conflicting_framebuffers in
drm_fb_helper.h upset gcc about static vs. non-static declarations, so
a new wrapper it needs to be. Means more churn :(

Cc: Tobias Jakobi <tjakobi@math.uni-bielefeld.de>
Cc: Noralf Trønnes <noralf@tronnes.org>
Cc: tomi.valkeinen@ti.com
Cc: dh.herrmann@gmail.com
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1470847958-28465-2-git-send-email-daniel.vetter@ffwll.ch
2016-08-12 10:41:18 +02:00
Daniel Vetter
2383050f6a Merge remote-tracking branch 'airlied/drm-next' into topic/drm-misc
Backmerge drm-next to be able to apply Chris' connector_unregister_all
cleanup (need latest i915 and sun4i state for that).

Also there's a trivial conflict in ttm_bo.c that git rerere fails to
remember.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2016-07-19 09:27:29 +02:00
Markus Elfring
63fe9bb865 drm/vc4: Delete unnecessary checks before two function calls
The following functions test whether their argument is NULL
and then return immediately.
* drm_fbdev_cma_hotplug_event
* drm_fbdev_cma_restore_mode

Thus the tests around their calls are not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/fb33d930-6a5c-c501-6676-26bd486f1cb5@users.sourceforge.net
2016-07-18 09:11:28 +02:00
Dave Airlie
2d635fded2 This pull request brings in vc4 shader validation for branching,
allowing GLSL shaders with non-unrolled loops.
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Merge tag 'drm-vc4-next-2016-07-15' of https://github.com/anholt/linux into drm-next

This pull request brings in vc4 shader validation for branching,
allowing GLSL shaders with non-unrolled loops.

* tag 'drm-vc4-next-2016-07-15' of https://github.com/anholt/linux:
  drm/vc4: Fix a "the the" typo in a comment.
  drm/vc4: Fix definition of QPU_R_MS_REV_FLAGS
  drm/vc4: Add a getparam to signal support for branches.
  drm/vc4: Add support for branching in shader validation.
  drm/vc4: Add a bitmap of branch targets during shader validation.
  drm/vc4: Move validation's current/max ip into the validation struct.
  drm/vc4: Add a getparam ioctl for getting the V3D identity regs.
2016-07-16 11:25:11 +10:00
Eric Anholt
a20d5fa61c drm/vc4: Fix a "the the" typo in a comment.
Signed-off-by: Eric Anholt <eric@anholt.net>
2016-07-15 15:19:52 -07:00
Eric Anholt
20e48fd6a9 drm/vc4: Fix definition of QPU_R_MS_REV_FLAGS
We don't use it in shader validation currently, so it had no effect,
but best to fix it anyway in case we do some day.

Signed-off-by: Eric Anholt <eric@anholt.net>
2016-07-15 15:19:52 -07:00
Eric Anholt
7363cee5b4 drm/vc4: Add a getparam to signal support for branches.
Userspace needs to know if it can create shaders that do branching.
Otherwise, for backwards compatibility with old kernels it needs to
lower if statements to conditional assignments.

Signed-off-by: Eric Anholt <eric@anholt.net>
2016-07-15 15:19:51 -07:00
Eric Anholt
6d45c81d22 drm/vc4: Add support for branching in shader validation.
We're already checking that branch instructions are between the start
of the shader and the proper PROG_END sequence.  The other thing we
need to make branching safe is to verify that the shader doesn't read
past the end of the uniforms stream.

To do that, we require that at any basic block reading uniforms have
the following instructions:

load_imm temp, <next offset within uniform stream>
add unif_addr, temp, unif

The instructions are generated by userspace, and the kernel verifies
that the load_imm is of the expected offset, and that the add adds it
to a uniform.  We track which uniform in the stream that is, and at
draw call time fix up the uniform stream to have the address of the
start of the shader's uniforms at that location.

Signed-off-by: Eric Anholt <eric@anholt.net>
2016-07-15 15:19:50 -07:00
Eric Anholt
93aa9ae3e5 drm/vc4: Add a bitmap of branch targets during shader validation.
This isn't used yet, it's just a first step toward loop validation.
During the main parsing of instructions, we need to know when we hit a
new basic block so that we can reset validated state.

v2: Fix a stray semicolon after an if block.  (caught by kbuild test).

Signed-off-by: Eric Anholt <eric@anholt.net>
2016-07-15 15:19:12 -07:00
Dave Airlie
35b8a74924 This pull request brings in new vc4 plane formats for Android, precise
vblank timestamping, and a couple of small cleanups.
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Merge tag 'drm-vc4-next-2016-07-12' of https://github.com/anholt/linux into drm-next

This pull request brings in new vc4 plane formats for Android, precise
vblank timestamping, and a couple of small cleanups.

* tag 'drm-vc4-next-2016-07-12' of https://github.com/anholt/linux:
  drm/vc4: remove redundant ret status check
  drm/vc4: Implement precise vblank timestamping.
  drm/vc4: Bind the HVS before we bind the individual CRTCs.
  gpu: drm: vc4_hdmi: add missing of_node_put after calling of_parse_phandle
  drm: vc4: enable XBGR8888 and ABGR8888 pixel formats
  drm/vc4: clean up error exit path on failed dpi_connector allocation
2016-07-15 13:56:11 +10:00
Eric Anholt
d0566c2a2f drm/vc4: Move validation's current/max ip into the validation struct.
Reduces the argument count for some of the functions, and will be used
more with the upcoming looping support.

Signed-off-by: Eric Anholt <eric@anholt.net>
2016-07-14 08:09:27 -07:00
Eric Anholt
af713795c5 drm/vc4: Add a getparam ioctl for getting the V3D identity regs.
As I extend the driver to support different V3D revisions, userspace
needs to know what version it's targeting.  This is most easily
detected using the V3D identity registers.

v2: Make sure V3D is runtime PM on when reading the registers.
v3: Switch to a 64-bit param value (suggested by Rob Clark in review)

Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch> (v2)
Reviewed-by: Rob Clark <robdclark@gmail.com> (v3, over irc)
2016-07-14 08:08:35 -07:00
Colin Ian King
deb4765db3 drm/vc4: remove redundant ret status check
At the current point where ret is being checked for non-zero it has
not changed since it was initialized to zero, hence the check and the
label unref are redundant and can be removed.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
2016-07-11 17:23:50 -07:00
Mario Kleiner
1bf59f1dcb drm/vc4: Implement precise vblank timestamping.
Precise vblank timestamping is implemented via the
usual scanout position based method. On VC4 the
pixelvalves PV do not have a scanout position
register. Only the hardware video scaler HVS has a
similar register which describes which scanline for
the output is currently composited and stored in the
HVS fifo for later consumption by the PV.

This causes a problem in that the HVS runs at a much
faster clock (system clock / audio gate) than the PV
which runs at video mode dot clock, so the unless the
fifo between HVS and PV is full, the HVS will progress
faster in its observable read line position than video
scan rate, so the HVS position reading can't be directly
translated into a scanout position for timestamp correction.

Additionally when the PV is in vblank, it doesn't consume
from the fifo, so the fifo gets full very quickly and then
the HVS stops compositing until the PV enters active scanout
and starts consuming scanlines from the fifo again, making
new space for the HVS to composite.

Therefore a simple translation of HVS read position into
elapsed time since (or to) start of active scanout does
not work, but for the most interesting cases we can still
get useful and sufficiently accurate results:

1. The PV enters active scanout of a new frame with the
   fifo of the HVS completely full, and the HVS can refill
   any fifo line which gets consumed and thereby freed up by
   the PV during active scanout very quickly. Therefore the
   PV and HVS work effectively in lock-step during active
   scanout with the fifo never having more than 1 scanline
   freed up by the PV before it gets refilled. The PV's
   real scanout position is therefore trailing the HVS
   compositing position as scanoutpos = hvspos - fifosize
   and we can get the true scanoutpos as HVS readpos minus
   fifo size, so precise timestamping works while in active
   scanout, except for the last few scanlines of the frame,
   when the HVS reaches end of frame, stops compositing and
   the PV catches up and drains the fifo. This special case
   would only introduce minor errors though.

2. If we are in vblank, then we can only guess something
   reasonable. If called from vblank irq, we assume the irq is
   usually dispatched with minimum delay, so we can take a
   timestamp taken at entry into the vblank irq handler as a
   baseline and then add a full vblank duration until the
   guessed start of active scanout. As irq dispatch is usually
   pretty low latency this works with relatively low jitter and
   good results.

   If we aren't called from vblank then we could be anywhere
   within the vblank interval, so we return a neutral result,
   simply the current system timestamp, and hope for the best.

Measurement shows the generated timestamps to be rather precise,
and at least never off more than 1 vblank duration worst-case.

Limitations: Doesn't work well yet for interlaced video modes,
             therefore disabled in interlaced mode for now.

v2: Use the DISPBASE registers to determine the FIFO size (changes
    by anholt)

Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-and-tested-by: Mario Kleiner <mario.kleiner.de@gmail.com> (v2)
2016-07-11 17:17:34 -07:00
Eric Anholt
7a100969f3 drm/vc4: Bind the HVS before we bind the individual CRTCs.
We need to be able to look at the CRTC's registers in the HVS as part
of initialization, while the HVS doesn't need to look at the PV
registers.

Signed-off-by: Eric Anholt <eric@anholt.net>
Reviewed-and-tested-by: Mario Kleiner <mario.kleiner.de@gmail.com>
2016-07-11 17:17:13 -07:00
Eric Anholt
9f4e62f152 This pull request brings in vblank/pageflip fixes I had hoped to see
merged before 4.7rc1, plus two new fixes that have come in since then.
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Merge tag 'drm-vc4-fixes-2016-06-06' into drm-vc4-next

Merge Mario's get_vblank_counter fix forward to prevent conflicts with
his followon patch to add precise vblank timestamping.
2016-07-07 18:53:53 -07:00
Peter Chen
027a697677 gpu: drm: vc4_hdmi: add missing of_node_put after calling of_parse_phandle
of_node_put needs to be called when the device node which is got
from of_parse_phandle has finished using.

Signed-off-by: Peter Chen <peter.chen@nxp.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
2016-07-07 18:45:11 -07:00
Rob Herring
93977767f0 drm: vc4: enable XBGR8888 and ABGR8888 pixel formats
DRM_FORMAT_XBGR8888 and DRM_FORMAT_ABGR8888 are 2 of the native formats
used in Android, so enable them for VC4. There seems to be no logic behind
HVS_PIXEL_ORDER_xxxx naming, but HVS_PIXEL_ORDER_ARGB seems to work
correctly.

Signed-off-by: Rob Herring <robh@kernel.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
2016-07-07 18:45:07 -07:00
Dave Airlie
542d972221 Linux 4.7-rc5
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Back-merge tag 'v4.7-rc5' into drm-next

Linux 4.7-rc5

The fsl-dcu pull needs -rc3 so go to -rc5 for now.
2016-07-02 15:56:01 +10:00
Daniel Vetter
f510f34c12 drm/vc4: Remove unused connector
Somehow I didn't spot this when pushing :(

Fixes: 398e97994f ("drm/vc4: Remove open-coded drm_connector_register_all()")
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
2016-06-22 12:41:47 +02:00
Chris Wilson
398e97994f drm/vc4: Remove open-coded drm_connector_register_all()
drm_dev_register() will now register all known connectors, so we no
longer have to do so manually.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Eric Anholt <eric@anholt.net>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1466501283-19976-3-git-send-email-chris@chris-wilson.co.uk
2016-06-22 09:57:28 +02:00
Boris Brezillon
b2d61d66ad drm: vc4: Rely on the default ->best_encoder() behavior
All outputs have a 1:1 relationship between connectors and encoders and
the driver is relying on the atomic helpers: we can drop the custom
->best_encoder() implementations and let the core call
drm_atomic_helper_best_encoder() for us.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1465300095-16971-15-git-send-email-boris.brezillon@free-electrons.com
2016-06-10 17:24:58 +02:00
Daniel Vetter
5e84c2690b drm/atomic-helper: Massage swap_state signature somewhat
- dev is redundant, we have state->atomic
- add stall parameter, which must be set when swapping needs to stall
  for preceeding commits to stop looking at ->state pointers. Currently
  all drivers need this to be, just prep work for a glorious future.

v2: Rebased on top of

commit e7cf0963f8
Author: Gerd Hoffmann <kraxel@redhat.com>
Date:   Tue May 31 08:50:47 2016 +0200

    virtio-gpu: add atomic_commit function

Cc: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1465509992-19284-1-git-send-email-daniel.vetter@ffwll.ch
Link: http://patchwork.freedesktop.org/patch/msgid/1465388359-8070-2-git-send-email-daniel.vetter@ffwll.ch
2016-06-10 16:52:12 +02:00
Maarten Lankhorst
7ea7728387 drm/core: Change declaration for gamma_set.
Change return value to int to propagate errors from gamma_set,
and remove start parameter. Updates always use the full size,
and some drivers even ignore the start parameter altogether.

This is needed for atomic drivers, where an atomic commit can
fail with -EINTR or -ENOMEM and should be restarted. This is already
and issue for drm_atomic_helper_legacy_set_gamma, which this patch
fixes up.

Changes since v1:
- Fix compiler warning. (Emil)
- Fix commit message (Daniel)

Cc: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: VMware Graphics <linux-graphics-maintainer@vmware.com>
Cc: Mathieu Larouche <mathieu.larouche@matrox.com>
Cc: Thierry Reding <treding@nvidia.com>
Acked-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
[danvet: Improve commit message a bit more, mention that this fixes
the helper.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/742944bc-9f41-1acb-df4f-0fd4c8a10168@linux.intel.com
2016-06-07 15:30:09 +02:00
Colin Ian King
a9402dfe17 drm/vc4: clean up error exit path on failed dpi_connector allocation
There is redundant code in the clean up exit path when dpi_connector
fails to be allocated.  The current code checks if connector is NULL
before destroying it, in fact, connector is NULL at this point so
the check is redundant and can be removed. The final clean up is
that we can remove the goto fail with a simple return and the unused
variable ret.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
2016-06-06 14:28:40 -07:00
Mario Kleiner
56d1fe0979 drm/vc4: Make pageflip completion handling more robust.
Protect both the setup of the pageflip event and the
latching of the new requested displaylist head pointer
by the event lock, so we can't get into a situation
where vc4_atomic_flush latches the new display list via
HVS_WRITE, then immediately gets preempted before queueing
the pageflip event, then the page-flip completes in hw and
the vc4_crtc_handle_page_flip() runs and no-ops due to
lack of a pending pageflip event, then vc4_atomic_flush
continues and only then queues the pageflip event - after
the page flip handling already no-oped. This would cause
flip completion handling only at the next vblank - one
frame too late.

In vc4_crtc_handle_page_flip() check the actual DL head
pointer in SCALER_DISPLACTX against the requested pointer
for page flip to make sure that the flip actually really
completed in the current vblank and doesn't get deferred
to the next one because the DL head pointer was written
a bit too late into SCALER_DISPLISTX, after start of
vblank, and missed the boat. This avoids handling a
pageflip completion too early - one frame too early.

According to Eric, DL head pointer updates which were
written into the HVS DISPLISTX reg get committed to hardware
at the last pixel of active scanout. Our vblank interrupt
handler, as triggered by PV_INT_VFP_START irq, gets to run
earliest at the first pixel of HBLANK at the end of the
last scanline of active scanout, ie. vblank irq handling
runs at least 1 pixel duration after a potential pageflip
completion happened in hardware.

This ordering of events in the hardware, together with the
lock protection and SCALER_DISPLACTX sampling of this patch,
guarantees that pageflip completion handling only runs at
exactly the vblank irq of actual pageflip completion in all
cases.

Background info from Eric about the relative timing of
HVS, PV's and trigger points for interrupts, DL updates:

https://lists.freedesktop.org/archives/dri-devel/2016-May/107510.html

Tested on RPi 2B with hardware timing measurement equipment
and shown to no longer complete flips too early or too late.

Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
2016-06-06 13:00:40 -07:00
Herve Jourdain
b10c22e5f9 drm/vc4: Fix ioctl permissions for render nodes.
Contrary to other flags to DRM_IOCTL_DEF_DRV(), which restrict usage,
the flag for render node is an enabler (the IOCTL can't be used from
render node if it's not present).  So DRM_RENDER_ALLOW needs to be
added to all the flags that were previously 0.

Signed-off-by: Herve Jourdain <herve.jourdain@neuf.fr>
Reviewed-by: Eric Anholt <eric@anholt.net>
Fixes: 0cd3e27476 ("drm/vc4: Add missing render node support")
2016-06-06 13:00:30 -07:00
Daniel Vetter
2f196b7c4b drm/atomic: Add drm_atomic_crtc_state_for_each_plane_state
... and use it in msm&vc4. Again just want to encapsulate
drm_atomic_state internals a bit.

The const threading is a bit awkward in vc4 since C sucks, but I still
think it's worth to enforce this. Eventually I want to make all the
obj->state pointers const too, but that's a lot more work ...

v2: Provide safe macro to wrap up the unsafe helper better, suggested
by Maarten.

v3: Fixup subject (Maarten) and spelling fixes (Eric Engestrom).

Cc: Eric Anholt <eric@anholt.net>
Cc: Rob Clark <robdclark@gmail.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1464877304-4213-1-git-send-email-daniel.vetter@ffwll.ch
2016-06-02 16:59:05 +02:00
Daniel Vetter
833cd78adb drm/vc4: Use for_each_plane_in_state
We want to hide drm_atomic_stat internals a bit better.

Cc: Eric Anholt <eric@anholt.net>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1464818821-5736-6-git-send-email-daniel.vetter@ffwll.ch
2016-06-02 15:49:22 +02:00
Dave Airlie
65439b68bb Merge tag 'topic/drm-misc-2016-06-01' of git://anongit.freedesktop.org/drm-intel into drm-next
Frist -misc pull for 4.8, with pretty much just random all over plus a few
more lockless gem BO patches acked/reviewed by driver maintainers.

I'm starting a bit earlier this time around because there's a few invasive
patch series to land (nonblocking atomic prep work, fence prep work,
rst/sphinx kerneldoc finally happening) and I need a baseline with all the
branches merged.

* tag 'topic/drm-misc-2016-06-01' of git://anongit.freedesktop.org/drm-intel: (21 commits)
  drm/vc4: Use lockless gem BO free callback
  drm/vc4: Use drm_gem_object_unreference_unlocked
  drm: Initialize a linear gamma table by default
  drm/vgem: Use lockless gem BO free callback
  drm/qxl: Don't set a gamma table size
  drm/msm: Nuke dummy gamma_set/get functions
  drm/cirrus: Drop redundnant gamma size check
  drm/fb-helper: Remove dead code in setcolreg
  drm/mediatek: Use lockless gem BO free callback
  drm/hisilicon: Use lockless gem BO free callback
  drm/hlcd: Use lockless gem BO free callback
  vga_switcheroo: Support deferred probing of audio clients
  vga_switcheroo: Add helper for deferred probing
  virtio-gpu: fix output lookup
  drm/doc: Unify KMS Locking docs
  drm/atomic-helper: Do not call ->mode_fixup for CRTC which will be disabled
  Fix annoyingly awkward typo in drm_edid_load.c
  drm/doc: Drop vblank_disable_allow wording
  drm: use seqlock for vblank time/count
  drm/mm: avoid possible null pointer dereference
  ...
2016-06-02 07:50:23 +10:00
Robert Foss
e7c31f6f25 drm/vc4: Return -EBUSY if there's already a pending flip event.
As per the documentation in drm_crtc.h, atomic_commit should return
-EBUSY if an asynchronous update is requested and there is an earlier
update pending.

v2: Rebase on the s/async/nonblock/ change.

Signed-off-by: Robert Foss <robert.foss@collabora.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
2016-05-31 15:15:55 -07:00
Mario Kleiner
ee7c10e10b drm/vc4: Fix drm_vblank_put/get imbalance in page flip path.
The async page flip path was missing drm_crtc_vblank_get/put
completely. The sync flip path was missing a vblank put, so async
flips only reported proper pageflip completion events by chance,
and vblank irq's never turned off after a first vsync'ed page flip
until system reboot.

Tested against Raspian kernel 4.4.8 tree on RPi 2B.

Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Fixes: b501bacc60 ("drm/vc4: Add support for async pageflips.")
2016-05-31 15:15:35 -07:00
Mario Kleiner
792293cfd5 drm/vc4: Fix get_vblank_counter with proper no-op for Linux 4.4+
get_vblank_counter hooked up to drm_vblank_count() which alway was
non-sensical but didn't hurt in the past. Since Linux 4.4 it
triggers a WARN_ON_ONCE in drm_update_vblank_count on first vblank
irq disable, so fix it by hooking to drm_vblank_no_hw_counter().

Tested against Raspian kernel 4.4.8 tree on RPi 2B.

Signed-off-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Fixes: c8b75bca92 ("drm/vc4: Add KMS support for Raspberry Pi.")
2016-05-31 15:15:29 -07:00
Daniel Vetter
b82caafcf2 drm/vc4: Use lockless gem BO free callback
No dev->struct_mutex anywhere to be seen.

Cc: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1464630800-30786-16-git-send-email-daniel.vetter@ffwll.ch
2016-05-31 21:14:02 +02:00
Daniel Vetter
db3697295c drm/vc4: Use drm_gem_object_unreference_unlocked
Since my last struct_mutex crusade someone escaped!

This already has the advantage that for the common case when someone
else holds a ref the unref won't even acquire dev->struct_mutex. And
I'm working on code to allow drivers to completely opt-out of any and
all dev->struct_mutex usage, but that only works if they use the
_unlocked variants everywhere.

v2: Drop comment too.

v3: Drop the other comment too.

Cc: Eric Anholt <eric@anholt.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1464630800-30786-15-git-send-email-daniel.vetter@ffwll.ch
2016-05-31 21:13:23 +02:00
Linus Torvalds
1d6da87a32 Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
Pull drm updates from Dave Airlie:
 "Here's the main drm pull request for 4.7, it's been a busy one, and
  I've been a bit more distracted in real life this merge window.  Lots
  more ARM drivers, not sure if it'll ever end.  I think I've at least
  one more coming the next merge window.

  But changes are all over the place, support for AMD Polaris GPUs is in
  here, some missing GM108 support for nouveau (found in some Lenovos),
  a bunch of MST and skylake fixes.

  I've also noticed a few fixes from Arnd in my inbox, that I'll try and
  get in asap, but I didn't think they should hold this up.

  New drivers:
   - Hisilicon kirin display driver
   - Mediatek MT8173 display driver
   - ARC PGU - bitstreamer on Synopsys ARC SDP boards
   - Allwinner A13 initial RGB output driver
   - Analogix driver for DisplayPort IP found in exynos and rockchip

  DRM Core:
   - UAPI headers fixes and C++ safety
   - DRM connector reference counting
   - DisplayID mode parsing for Dell 5K monitors
   - Removal of struct_mutex from drivers
   - Connector registration cleanups
   - MST robustness fixes
   - MAINTAINERS updates
   - Lockless GEM object freeing
   - Generic fbdev deferred IO support

  panel:
   - Support for a bunch of new panels

  i915:
   - VBT refactoring
   - PLL computation cleanups
   - DSI support for BXT
   - Color manager support
   - More atomic patches
   - GEM improvements
   - GuC fw loading fixes
   - DP detection fixes
   - SKL GPU hang fixes
   - Lots of BXT fixes

  radeon/amdgpu:
   - Initial Polaris support
   - GPUVM/Scheduler/Clock/Power improvements
   - ASYNC pageflip support
   - New mesa feature support

  nouveau:
   - GM108 support
   - Power sensor support improvements
   - GR init + ucode fixes.
   - Use GPU provided topology information

  vmwgfx:
   - Add host messaging support

  gma500:
   - Some cleanups and fixes

  atmel:
   - Bridge support
   - Async atomic commit support

  fsl-dcu:
   - Timing controller for LCD support
   - Pixel clock polarity support

  rcar-du:
   - Misc fixes

  exynos:
   - Pipeline clock support
   - Exynoss4533 SoC support
   - HW trigger mode support
   - export HDMI_PHY clock
   - DECON5433 fixes
   - Use generic prime functions
   - use DMA mapping APIs

  rockchip:
   - Lots of little fixes

  vc4:
   - Render node support
   - Gamma ramp support
   - DPI output support

  msm:
   - Mostly cleanups and fixes
   - Conversion to generic struct fence

  etnaviv:
   - Fix for prime buffer handling
   - Allow hangcheck to be coalesced with other wakeups

  tegra:
   - Gamme table size fix"

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (1050 commits)
  drm/edid: add displayid detailed 1 timings to the modelist. (v1.1)
  drm/edid: move displayid validation to it's own function.
  drm/displayid: Iterate over all DisplayID blocks
  drm/edid: move displayid tiled block parsing into separate function.
  drm: Nuke ->vblank_disable_allowed
  drm/vmwgfx: Report vmwgfx version to vmware.log
  drm/vmwgfx: Add VMWare host messaging capability
  drm/vmwgfx: Kill some lockdep warnings
  drm/nouveau/gr/gf100-: fix race condition in fecs/gpccs ucode
  drm/nouveau/core: recognise GM108 chipsets
  drm/nouveau/gr/gm107-: fix touching non-existent ppcs in attrib cb setup
  drm/nouveau/gr/gk104-: share implementation of ppc exception init
  drm/nouveau/gr/gk104-: move rop_active_fbps init to nonctx
  drm/nouveau/bios/pll: check BIT table version before trying to parse it
  drm/nouveau/bios/pll: prevent oops when limits table can't be parsed
  drm/nouveau/volt/gk104: round up in gk104_volt_set
  drm/nouveau/fb/gm200: setup mmu debug buffer registers at init()
  drm/nouveau/fb/gk20a,gm20b: setup mmu debug buffer registers at init()
  drm/nouveau/fb/gf100-: allocate mmu debug buffers
  drm/nouveau/fb: allow chipset-specific actions for oneinit()
  ...
2016-05-23 11:48:48 -07:00
Daniel Vetter
fcee59065e drm: Nuke ->vblank_disable_allowed
This was added in

commit 0a3e67a4ca
Author: Jesse Barnes <jbarnes@virtuousgeek.org>
Date:   Tue Sep 30 12:14:26 2008 -0700

    drm: Rework vblank-wait handling to allow interrupt reduction.

to stay backwards-compatible with old UMS code that didn't even tell
the kernel when it did a modeset, so that the kernel could
save/restore vblank counters. At worst this means vblanks will be
somewhat funky on a setup that very likely no one still runs.

So let's just nuke it.

Plan B would be to set it unconditionally in drm_vblank_init for kms
drivers, instead of in each driver separately. So if this patch breaks
anything please only restore the hunks in drmP.h and drm_irq.c, plus
add a check for DRIVER_MODESET in drm_vblank_init.

Stumbled over this in a discussion on irc with Chris.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Mark Yao <mark.yao@rock-chips.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2016-05-21 07:03:31 +10:00
Daniel Vetter
2f701695fd drm: Drop plane argument from __drm_atomic_helper_plane_destroy_state
It's unused, and really this helper should only look at the state
structure and nothing else.

v2: Fix commit message (Laurent).

v3: Rebase onto mtk driver merge.

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Inki Dae <inki.dae@samsung.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: Mark Yao <mark.yao@rock-chips.com>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1462804451-15318-2-git-send-email-daniel.vetter@ffwll.ch
2016-05-17 08:56:55 +02:00
Daniel Vetter
ec2dc6a0fe drm: Drop crtc argument from __drm_atomic_helper_crtc_destroy_state
It's unused, and really this helper should only look at the state
structure and nothing else.

v2: Rebase on top of rockchip changes

v3: Drop unrelated hunk, spotted by Laurent.

v4: Rebase onto mtk driver merge.

Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Eric Anholt <eric@anholt.net>
Cc: Mark Yao <mark.yao@rock-chips.com>
Acked-by: Thierry Reding <thierry.reding@gmail.com>
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1462804451-15318-1-git-send-email-daniel.vetter@ffwll.ch
2016-05-17 08:56:41 +02:00
Chris Wilson
a8ad0bd84f drm: Remove unused drm_device from drm_gem_object_lookup()
drm_gem_object_lookup() has never required the drm_device for its file
local translation of the user handle to the GEM object. Let's remove the
unused parameter and save some space.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: dri-devel@lists.freedesktop.org
Cc: Dave Airlie <airlied@redhat.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
[danvet: Fixup kerneldoc too.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2016-05-17 08:47:30 +02:00
Dave Airlie
21daaeee9f Merge tag 'topic/drm-misc-2016-05-04' of git://anongit.freedesktop.org/drm-intel into drm-next
Ofc I promise just a few leftovers for drm-misc and somehow it's the
biggest pull. But really mostly trivial stuff:
- MAINTAINERS updates from Emil
- rename async to nonblock in atomic_commit to avoid the confusion between
  nonblocking ioctl and async flip (= not vblank synced), from Maarten.
  Needs to be regened with newer drivers, but probably only after -rc1 to
  catch them all.
- actually lockless gem_object_free, plus acked driver conversion patches.
  All the trickier prep stuff already is in drm-next.
- Noralf's nice work for generic defio support in our fbdev emulation.
  Keeps the udl hack, and qxl is tested by Gerd.

* tag 'topic/drm-misc-2016-05-04' of git://anongit.freedesktop.org/drm-intel: (47 commits)
  drm: Fixup locking WARN_ON mistake around gem_object_free_unlocked
  drm/etnaviv: Use lockless gem BO free callback
  drm/imx: Use lockless gem BO free callback
  drm/radeon: Use lockless gem BO free callback
  drm/amdgpu: Use lockless gem BO free callback
  drm/gem: support BO freeing without dev->struct_mutex
  MAINTAINERS: Add myself for the new VC4 (RPi GPU) graphics driver.
  MAINTAINERS: Add a bunch of legacy (UMS) DRM drivers
  MAINTAINERS: Add a few DRM drivers by Dave Airlie
  MAINTAINERS: List the correct git repo for the Renesas DRM drivers
  MAINTAINERS: Update the files list for the Renesas DRM drivers
  MAINTAINERS: Update the files list for the Armada DRM driver
  MAINTAINERS: Update the files list for the Rockchip DRM driver
  MAINTAINERS: Update the files list for the Exynos DRM driver
  MAINTAINERS: Add maintainer entry for the VMWGFX DRM driver
  MAINTAINERS: Add maintainer entry for the MSM DRM driver
  MAINTAINERS: Add maintainer entry for the Nouveau DRM driver
  MAINTAINERS: Update the files list for the Etnaviv DRM driver
  MAINTAINERS: Remove unneded wildcard for the i915 DRM driver
  drm/atomic: Add WARN_ON when state->acquire_ctx is not set.
  ...
2016-05-05 09:56:30 +10:00