Commit graph

23894 commits

Author SHA1 Message Date
Rajesh Kemisetti
b9ad61fb8e msm: kgsl: Add missing check for size against lower VA
_get_unmapped_area_topdown() subtracts the requested size
from lower entry base without really checking its value.

This leads to overflow while working at boundary conditions.

Add a condition to check entry base with the size and proceed.

Change-Id: Ic695da683b11de35c7c4b8936a35d693dc8fa452
Signed-off-by: Rajesh Kemisetti <rajeshk@codeaurora.org>
2016-03-23 21:14:53 -07:00
Tarun Karra
1757ab898b msm: kgsl: Prevent deadlock in cmdbatch timer
Dispatcher can acquire drawctxt->lock if context is pending
and the fence it is waiting on just got signalled.
Dispatcher acquires drawctxt->lock and tries to delete the
cmdbatch timer using delete_timer_sync(). Delete_timer_sync()
waits till timer and its pending handlers are deleted.
But if the timer expires at the same time, timer handler
could be waiting on drawctxt->lock leading to a
deadlock. To prevent this use spin_trylock_bh() instead of
spin_lock_bh(). spin_trylock_bh() does not wait for the lock
if it does not get it and allows the timer handler to finish.
This prevents the deadlock.

Change-Id: Ic2344fed5fccb581b58ec0b66b45ba68af9f1459
Signed-off-by: Tarun Karra <tkarra@codeaurora.org>
2016-03-23 21:14:52 -07:00
Oleg Perelet
d1fcd1dbe8 msm: kgsl: Add A540 limits management
Add ISENSE based limit management, provide interfaces to GPMU
and hardware LLM and BCL subsystems.

Change-Id: Ic0419509bdc6d4d9d478277cc90ae75dc527ca66
Signed-off-by: Oleg Perelet <operelet@codeaurora.org>
2016-03-23 21:13:43 -07:00
Tarun Karra
6dc0e71825 msm: kgsl: Add support for the A540 GPU
Add support for the A540 GPU device:
   * Add entry to the GPU list and add adreno_is_a540() functions
   * Add VBIF settings
   * Add hardware clock gating values

Change-Id: Ibd653597400ded01ca05607fbbdafea3e86e177f
Signed-off-by: Tarun Karra <tkarra@codeaurora.org>
Signed-off-by: Oleg Perelet <operelet@codeaurora.org>
2016-03-23 21:13:42 -07:00
Carter Cooper
53dbbb3ed6 msm: kgsl: Remove tracking virtual map sizes
mmapsize is no longer important to the memory descriptor
and the APIs that would use it never materialized. It currently
just tracks the size of the memdesc and is no longer needed.

Change-Id: I8fa1001c2f89f23034029de7de6ab77532bf45fa
Signed-off-by: Carter Cooper <ccooper@codeaurora.org>
2016-03-23 21:13:41 -07:00
Carter Cooper
6eb6712708 msm: kgsl: Verify the pointer isn't NULL before using it for kref
Probably overkill, but ensure that the struct pointer we are going
to dereference to send into kref calls is valid before we dereference.

Change-Id: I308176df9f7476a2a9f1357612381a93160ad698
Signed-off-by: Carter Cooper <ccooper@codeaurora.org>
2016-03-23 21:13:40 -07:00
Carter Cooper
048fc95836 msm: kgsl: Rework page allocation sizes
Alignment checks only need to be done once and can be moved down to
the lower layers.

Change-Id: Ia4683cf9db08506db810e80854c006d94dc80310
Signed-off-by: Carter Cooper <ccooper@codeaurora.org>
2016-03-23 21:13:39 -07:00
Carter Cooper
eaa62a6847 msm: kgsl: Cleanup iommu interactions for secured MMU cases
The code has gotten bloated and repeats the same logic in several
places leading to very stringy code. Consolidate this code to
enable easier readability as well as prep the code for future
changes to this area.

Change-Id: Ibb70cbae3a8a5157e589020ccebefff11b6ffaf1
Signed-off-by: Carter Cooper <ccooper@codeaurora.org>
2016-03-23 21:13:38 -07:00
Rajesh Kemisetti
dd68fb8d5b msm: kgsl: Don't enable GPU 64bit when kernel is in 32bit configuration
Setting the GPU to 64bit when rest of world is in 32bit can
make the GPU misbehave. Hence, check the kernel configuration
before actually moving the GPU to 64bit mode.

Change-Id: Ie4cf6c2d4fdfa978287c86812bdce4bf8c56ef5f
Signed-off-by: Rajesh Kemisetti <rajeshk@codeaurora.org>
2016-03-23 21:12:33 -07:00
Prakash Kamliya
f5d225e2ff msm: kgsl: Fix state transition action from deep_nap state
Deep nap removes the quality of service latency vote. Restore device
before powering back the GPU while coming out of deep nap.

Change-Id: I9366ffa6f5f2768cb3ea10f9117678ba8cf8d190
Signed-off-by: Prakash Kamliya <pkamliya@codeaurora.org>
Signed-off-by: Divya Ponnusamy <pdivya@codeaurora.org>
2016-03-23 21:12:29 -07:00
Jordan Crouse
10ad380dc4 msm: kgsl: Add a macro to derive the device from the mmu structure
struct kgsl_mmu is a static member of struct kgsl_device so we can
use the usual container_of trick to get the device from a mmu
pointer rather than carry around an unneeded back reference.

Change-Id: Ic0dedbad7ff22e598b03d980dfbb738374ed5a7a
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
2016-03-23 21:11:49 -07:00
Jordan Crouse
bdd0368ce0 msm: kgsl: Add macros to facilitate checking MMU and pagetable ops
The MMU code does most of its magic by way of device specific MMU
and pagetable functions.  Add macros to make it easier for developers
to verify that hooks exist before calling them.

Change-Id: Ic0dedbadf74682adebec1a973384e1d3bbf4f79e
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
2016-03-23 21:11:48 -07:00
Jordan Crouse
6fce6a4e6f msm: kgsl: Skip a5xx_post_start if it isn't needed
a5xx_post_start() is currently only used for either an A530 workaround
OR preemption.  If neither are allocated then memory is allocated in
the ringbuffer for no reason and it confuses everybody.

Change-Id: Ic0dedbad7615ba0593da5eb701cc5943877883f4
Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
2016-03-23 21:11:47 -07:00
Harshdeep Dhatt
4aef0900ff msm: kgsl: Fix race condition in snapshot sysfs read
If there are concurrent sysfs reads of snapshot binary
there can be a race condition where the snapshot data
is prematurely free'd by one reader while the other reader
is still reading it. Fix this by proper refcounting using
an atomic.

CRs-Fixed: 902816
Change-Id: I7a156c3a22f5475df0394ae30328d0fd6140f3da
Signed-off-by: Harshdeep Dhatt <hdhatt@codeaurora.org>
2016-03-23 21:11:40 -07:00
Chintan Pandya
93a0f575cb iommu: Use proper bus for domain allocation in client drivers
When there are multiple IOMMU drivers in the system,
each one will be sitting on different busses. This
way, clients should be choosing the right bus to
declare their domain on. Once and for all, update
all the clients code to use proper bus abstraction
API msm_iommu_get_bus() to get right bus.

Change-Id: I5edf7037e7b1e4af6a559b6aeaa0b6de0976bf35
Signed-off-by: Chintan Pandya <cpandya@codeaurora.org>
[cip@codeaurora.org: Removed changes to
drivers/gpu/drm/msm/mdp/mdp5/mdp5_kms.c,
drivers/media/platform/msm/camera_v2/common/cam_smmu_api.c,
drivers/media/platform/msm/vidc/venus_boot.c,
drivers/platform/msm/ipa/ipa_v2/ipa.c,
drivers/platform/msm/ipa/ipa_v3/ipa.c,
drivers/platform/msm/msm_11ad/msm_11ad.c]
Signed-off-by: Clarence Ip <cip@codeaurora.org>
2016-03-23 20:45:54 -07:00
Jordan Crouse
a43bd89897 msm: kgsl: Increase GPMU timeouts
The existing timeout values for the various GPMU interactions seems
to have been a tad optimistic for all conditions. Increase them to
cover measured worse case scenarios.

Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
2016-03-22 11:15:54 -07:00
Jordan Crouse
d31b0d97e6 msm: kgsl: Conditionally use bwmon governor if it exists
Wrap the code to use the bwmon governor or not depending if it
exists.

Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
2016-03-22 11:15:53 -07:00
Jordan Crouse
56930b9f17 msm: kgsl: Update various exernal APIs for the 4.4 kernel
Make several changes to build the GPU driver for 4.4:

 - Rename CONFIG_MSM to CONFIG_QCOM where applicable
 - Add msm_kgsl.h to the Kbuild exports
 - Remove linux/coresight_of.h (as it has been merged into
   coresight.h) and remove the .owner member of the
   coresight_desc struct.
 - Use the new location for the sync.h file (in staging)
 - Remove an unused sync function
 - Move oneshot_sync.h inside of #ifdef wrappers

Signed-off-by: Jordan Crouse <jcrouse@codeauorora.org>
2016-03-22 11:15:52 -07:00
Jordan Crouse
318be96313 devfreq: Add Qualcomm GPU devfreq governors
Snapshot of the Qualcomm GPU devfreq governors and support
as of msm-3.18 commit e70ad0cd5efd
("Promotion of kernel.lnx.3.18-151201.").

Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
2016-03-22 11:15:51 -07:00
Jordan Crouse
5103db813f msm: kgsl: Add Qualcomm GPU driver
Snapshot of the Qualcom Adreno GPU driver (KGSL) as of msm-3.18 commit
commit e70ad0cd5efd ("Promotion of kernel.lnx.3.18-151201.").

Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
2016-03-22 11:15:49 -07:00
Dave Airlie
3bea6a4c78 Merge branch 'linux-4.4' of git://github.com/skeggsb/linux into drm-fixes
single nv40 oops fix.

* 'linux-4.4' of git://github.com/skeggsb/linux:
  drm/nouveau/gr/nv40: fix oops in interrupt handler
2016-01-07 17:18:45 +10:00
Ben Skeggs
9daf38f4fc drm/nouveau/gr/nv40: fix oops in interrupt handler
fdo#93557

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Cc: stable@vger.kernel.org
2016-01-05 07:51:18 +10:00
Linus Torvalds
4e5e384c46 Merge tag 'drm-intel-fixes-2016-01-02' of git://anongit.freedesktop.org/drm-intel
Pull i915 drm fixes from Jani Nikula:
 "Two display fixes still for v4.4.

  The new year's resolution is to start using signed tags per Linus'
  request.  This one is still unsigned; I want to fix this up in our
  maintainer scripts instead of doing it one-off"

* tag 'drm-intel-fixes-2016-01-02' of git://anongit.freedesktop.org/drm-intel:
  drm/i915: increase the tries for HDMI hotplug live status checking
  drm/i915: Unbreak check_digital_port_conflicts()
2016-01-03 11:36:26 -08:00
Gary Wang
3d8acd1f66 drm/i915: increase the tries for HDMI hotplug live status checking
The total delay of HDMI hotplug detecting with 30ms is sometimes not
enoughtfor HDMI live status up with specific HDMI monitors in BSW platform.

After doing experiments for following monitors, it needs 80ms at least
for those worst cases.

Lenovo L246 1xwA (4 failed, necessary hot-plug delay: 58/40/60/40ms)
Philips HH2AP (9 failed, necessary hot-plug delay: 80/50/50/60/46/40/58/58/39ms)
BENQ ET-0035-N (6 failed, necessary hot-plug delay: 60/50/50/80/80/40ms)
DELL U2713HM (2 failed, necessary hot-plug delay: 58/59ms)
HP HP-LP2475w (5 failed, necessary hot-plug delay: 70/50/40/60/40ms)

It looks like 70-80 ms is BSW platform needs in some bad cases of the
monitors at this end (8 times delay at most). Keep less than 100ms for
HDCP pulse HPD low (with at least 100ms) to respond a plug out.

Reviewed-by: Cooper Chiou <cooper.chiou@intel.com>
Tested-by: Gary Wang <gary.c.wang@intel.com>
Cc: Gavin Hindman <gavin.hindman@intel.com>
Cc: Sonika Jindal <sonika.jindal@intel.com>
Cc: Shashank Sharma <shashank.sharma@intel.com>
Cc: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Gary Wang <gary.c.wang@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1450858295-12804-1-git-send-email-gary.c.wang@intel.com
Tested-by: Shobhit Kumar <shobhit.kumar@intel.com>
Cc: drm-intel-fixes@lists.freedesktop.org
Fixes: 237ed86c69 ("drm/i915: Check live status before reading edid")
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit f8d03ea0053b23de42c828d559016eabe0b91523)
[Jani: undo the file mode change of the original commit]
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-12-30 13:58:37 +02:00
Linus Torvalds
5b726e06d6 Merge tag 'drm-intel-fixes-2015-12-23' of git://anongit.freedesktop.org/drm-intel
Pull i915 drm fixes from Jani Nikula:
 "Here's a batch of i915 fixes all around.  It may be slightly bigger
  than one would hope for at this stage, but they've all been through
  testing in our -next before being picked up for v4.4.  Also, I missed
  Dave's fixes pull earlier today just because I wanted an extra testing
  round on this.  So I'm fairly confident.

  Wishing you all the things it is customary to wish this time of the
  year"

* tag 'drm-intel-fixes-2015-12-23' of git://anongit.freedesktop.org/drm-intel:
  drm/i915: Correct max delay for HDMI hotplug live status checking
  drm/i915: mdelay(10) considered harmful
  drm/i915: Kill intel_crtc->cursor_bo
  drm/i915: Workaround CHV pipe C cursor fail
  drm/i915: Only spin whilst waiting on the current request
  drm/i915: Limit the busy wait on requests to 5us not 10ms!
  drm/i915: Break busywaiting for requests on pending signals
  drm/i915: Disable primary plane if we fail to reconstruct BIOS fb (v2)
  drm/i915: Set the map-and-fenceable flag for preallocated objects
  drm/i915: Drop the broken cursor base==0 special casing
2015-12-23 10:22:16 -08:00
Ville Syrjälä
ae35b56e36 drm/i915: Unbreak check_digital_port_conflicts()
Atomic changes broke check_digital_port_conflicts(). It needs to look
at the global situation instead of just trying to find a conflict
within the current atomic state.

This bug made my HSW explode spectacularly after I had split the DDI
encoders into separate DP and HDMI encoders. With the fix, things
seem much more solid.

I hope holding the connection_mutex is enough protection that we can
actually walk the connectors even if they're not part of the current
atomic state...

v2: Regenerate the patch so that it actually applies (Jani)

Cc: stable@vger.kernel.org
Cc: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Fixes: 5448a00d3f ("drm/i915: Don't use staged config in check_digital_port_conflicts()")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1449764551-12466-1-git-send-email-ville.syrjala@linux.intel.com
(cherry picked from commit 0bff4858653312a10c83709e0009c3adb87e6f1e)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-12-23 12:52:37 +02:00
Gary Wang
a98728e0bb drm/i915: Correct max delay for HDMI hotplug live status checking
The total delay of HDMI hotplug detecting with 30ms have already
been split into a resolution of 3 retries of 10ms each, for the worst
cases. But it still suffered from only waiting 10ms at most in
intel_hdmi_detect(). This patch corrects it by reading hotplug status
with 4 times at most for 30ms delay.

v2:
- straight up to loop execution for more clear in code readability
- mdelay will replace with msleep by Daniel's new patch

	drm/i915: mdelay(10) considered harmful

- suggest to re-evaluate try times for being compatible to old HDMI monitor

Reviewed-by: Cooper Chiou <cooper.chiou@intel.com>
Tested-by: Gary Wang <gary.c.wang@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Gavin Hindman <gavin.hindman@intel.com>
Cc: Sonika Jindal <sonika.jindal@intel.com>
Cc: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Gary Wang <gary.c.wang@intel.com>
[danvet: fixup conflict with s/mdelay/msleep/ patch.]
Cc: drm-intel-fixes@lists.freedesktop.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit 61fb3980dd396880ffba48523b1e27579868b82b)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-12-22 13:01:24 +02:00
Daniel Vetter
97f9010af0 drm/i915: mdelay(10) considered harmful
I missed this myself when reviewing

commit 237ed86c69
Author: Sonika Jindal <sonika.jindal@intel.com>
Date:   Tue Sep 15 09:44:20 2015 +0530

    drm/i915: Check live status before reading edid

Long sleeps like this really shouldn't waste cpu cycles spinning.

Cc: Sonika Jindal <sonika.jindal@intel.com>
Cc: "Wang, Gary C" <gary.c.wang@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1449859455-32609-1-git-send-email-daniel.vetter@ffwll.ch
Reviewed-by: Sonika Jindal <sonika.jindal@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit 71a199bacb398ee54eeac001699257dda083a455)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-12-22 13:00:45 +02:00
Ville Syrjälä
57a2af6bbc drm/i915: Kill intel_crtc->cursor_bo
The vma may have been rebound between the last time the cursor was
enabled and now, so skipping the cursor gtt offset deduction is not
safe unless we would also reset cursor_bo to NULL when disabling the
cursor. Just thow cursor_bo to the bin instead since it's lost all
other uses thanks to universal plane support.

Chris pointed out that cursor updates are currently too slow
via universal planes that micro optimizations like these wouldn't
even help.

v2: Add a note about futility of micro optimizations (Chris)

Cc: drm-intel-fixes@lists.freedesktop.org
References: http://lists.freedesktop.org/archives/intel-gfx/2015-December/082976.html
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1450107302-17171-1-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
(cherry picked from commit 1264859d648c4bdc9f0a098efbff90cbf462a075)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-12-22 12:59:06 +02:00
Ville Syrjälä
ef8dd37af8 drm/i915: Workaround CHV pipe C cursor fail
Turns out CHV pipe C was glued on somewhat poorly, and there's something
wrong with the cursor. If the cursor straddles the left screen edge,
and is then moved away from the edge or disabled, the pipe will often
underrun. If enough underruns are triggered quickly enough the pipe
will fall over and die (it just scans out a solid color and reports
a constant underrun). We need to turn the disp2d power well off and
on again to recover the pipe.

None of that is very nice for the user, so let's just refuse to place
the cursor in the compromised position. The ddx appears to fall back
to swcursor when the ioctl returns an error, so theoretically there's
no loss of functionality for the user (discounting swcursor bugs).
I suppose most cursors images actually have the hotspot not exactly
at 0,0 so under typical conditions the fallback will in fact kick in
as soon as the cursor touches the left edge of the screen.

Any atomic compositor should anyway be prepared to fall back to
GPU composition when things don't work out, so there should be no
problem with those.

Other things that I tried to solve this include flipping all
display related clock gating knobs I could find, increasing the
minimum gtt alignment all the way up to 512k. I also tried to see
if there are more specific screen coordinates that hit the bug, but
the findings were somewhat inconclusive. Sometimes the failures
happen almost across the whole left edge, sometimes more at the very
top and around the bottom half. I wasn't able to find any real pattern
to these variations, so it seems our only choice is to just refuse
to straddle the left screen edge at all.

Cc: stable@vger.kernel.org
Cc: Jason Plum <max@warheads.net>
Testcase: igt/kms_chv_cursor_fail
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92826
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1450459479-16286-1-git-send-email-ville.syrjala@linux.intel.com
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit b29ec92c4f5e6d45d8bae8194e664427a01c6687)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-12-22 12:57:56 +02:00
Chris Wilson
0f0cd47206 drm/i915: Only spin whilst waiting on the current request
Limit busywaiting only to the request currently being processed by the
GPU. If the request is not currently being processed by the GPU, there
is a very low likelihood of it being completed within the 2 microsecond
spin timeout and so we will just be wasting CPU cycles.

v2: Check for logical inversion when rebasing - we were incorrectly
checking for this request being active, and instead busywaiting for
when the GPU was not yet processing the request of interest.

v3: Try another colour for the seqno names.
v4: Another colour for the function names.

v5: Remove the forced coherency when checking for the active request. On
reflection and plenty of recent experimentation, the issue is not a
cache coherency problem - but an irq/seqno ordering problem (timing issue).
Here, we do not need the w/a to force ordering of the read with an
interrupt.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: "Rogozhkin, Dmitry V" <dmitry.v.rogozhkin@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Eero Tamminen <eero.t.tamminen@intel.com>
Cc: "Rantala, Valtteri" <valtteri.rantala@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1449833608-22125-4-git-send-email-chris@chris-wilson.co.uk
(cherry picked from commit 821485dc2ad665f136c57ee589bf7a8210160fe2)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-12-22 12:56:58 +02:00
Chris Wilson
f87a780f07 drm/i915: Limit the busy wait on requests to 5us not 10ms!
When waiting for high frequency requests, the finite amount of time
required to set up the irq and wait upon it limits the response rate. By
busywaiting on the request completion for a short while we can service
the high frequency waits as quick as possible. However, if it is a slow
request, we want to sleep as quickly as possible. The tradeoff between
waiting and sleeping is roughly the time it takes to sleep on a request,
on the order of a microsecond. Based on measurements of synchronous
workloads from across big core and little atom, I have set the limit for
busywaiting as 10 microseconds. In most of the synchronous cases, we can
reduce the limit down to as little as 2 miscroseconds, but that leaves
quite a few test cases regressing by factors of 3 and more.

The code currently uses the jiffie clock, but that is far too coarse (on
the order of 10 milliseconds) and results in poor interactivity as the
CPU ends up being hogged by slow requests. To get microsecond resolution
we need to use a high resolution timer. The cheapest of which is polling
local_clock(), but that is only valid on the same CPU. If we switch CPUs
because the task was preempted, we can also use that as an indicator that
 the system is too busy to waste cycles on spinning and we should sleep
instead.

__i915_spin_request was introduced in
commit 2def4ad99b [v4.2]
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Tue Apr 7 16:20:41 2015 +0100

     drm/i915: Optimistically spin for the request completion

v2: Drop full u64 for unsigned long - the timer is 32bit wraparound safe,
so we can use native register sizes on smaller architectures. Mention
the approximate microseconds units for elapsed time and add some extra
comments describing the reason for busywaiting.

v3: Raise the limit to 10us
v4: Now 5us.

Reported-by: Jens Axboe <axboe@kernel.dk>
Link: https://lkml.org/lkml/2015/11/12/621
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: "Rogozhkin, Dmitry V" <dmitry.v.rogozhkin@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Eero Tamminen <eero.t.tamminen@intel.com>
Cc: "Rantala, Valtteri" <valtteri.rantala@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1449833608-22125-3-git-send-email-chris@chris-wilson.co.uk
(cherry picked from commit ca5b721e238226af1d767103ac852aeb8e4c0764)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-12-22 12:55:50 +02:00
Chris Wilson
e7571f7fd6 drm/i915: Break busywaiting for requests on pending signals
The busywait in __i915_spin_request() does not respect pending signals
and so may consume the entire timeslice for the task instead of
returning to userspace to handle the signal.

In the worst case this could cause a delay in signal processing of 20ms,
which would be a noticeable jitter in cursor tracking. If a higher
resolution signal was being used, for example to provide fairness of a
server timeslices between clients, we could expect to detect some
unfairness between clients (i.e. some windows not updating as fast as
others). This issue was noticed when inspecting a report of poor
interactivity resulting from excessively high __i915_spin_request usage.

Fixes regression from
commit 2def4ad99b [v4.2]
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date:   Tue Apr 7 16:20:41 2015 +0100

     drm/i915: Optimistically spin for the request completion

v2: Try to assess the impact of the bug

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc; "Rogozhkin, Dmitry V" <dmitry.v.rogozhkin@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Eero Tamminen <eero.t.tamminen@intel.com>
Cc: "Rantala, Valtteri" <valtteri.rantala@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1449833608-22125-2-git-send-email-chris@chris-wilson.co.uk
(cherry picked from commit 91b0c352ace9afec1fb51590c7b8bd60e0eb9fbd)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-12-22 12:55:01 +02:00
Matt Roper
a59fac67d3 drm/i915: Disable primary plane if we fail to reconstruct BIOS fb (v2)
If we fail to reconstruct the BIOS fb (e.g., because the FB is too
large), we'll be left with plane state that indicates the primary plane
is visible yet has a NULL fb.  This mismatch causes problems later on
(e.g., for the watermark code).  Since we've failed to reconstruct the
BIOS FB, the best solution is to just disable the primary plane and
pretend the BIOS never had it enabled.

v2: Add intel_pre_disable_primary() call (Maarten)

Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Ville Syrjälä <ville.syrjala@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: drm-intel-fixes@lists.freedesktop.org
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1449171462-30763-2-git-send-email-matthew.d.roper@intel.com
(cherry picked from commit 200757f5d7c6f7f7032a0a07bbb8c02a840bbf7d)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-12-22 11:52:50 +02:00
Chris Wilson
62d622c1f8 drm/i915: Set the map-and-fenceable flag for preallocated objects
As we mark the preallocated objects as bound, we should also flag them
correctly as being map-and-fenceable (if appropriate!) so that later
users do not get confused and try and rebind the pinned vma in order to
get a map-and-fenceable binding.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: "Goel, Akash" <akash.goel@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: drm-intel-fixes@lists.freedesktop.org
Link: http://patchwork.freedesktop.org/patch/msgid/1448029000-10616-1-git-send-email-chris@chris-wilson.co.uk
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
(cherry picked from commit d0710abbcd88b1ff17760e97d74a673e67b49ea1)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-12-22 11:52:27 +02:00
Ville Syrjälä
615cb24326 drm/i915: Drop the broken cursor base==0 special casing
The cursor code tries to treat base==0 to mean disabled. That fails
when the cursor bo gets bound at ggtt offset 0, and the user is left
looking at an invisible cursor.

We lose the disabled->disabled optimization, but that seems like
something better handled at a slightly higher level.

Cc: drm-intel-fixes@lists.freedesktop.org
Cc: Takashi Iwai <tiwai@suse.de>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1450091808-32607-3-git-send-email-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
(cherry picked from commit 663f3122d00c0b412d429f105dca129aa8f4f094)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-12-22 11:51:28 +02:00
Andrzej Hajda
c4e074074c drm/exynos: atomic check only enabled crtc states
Since atomic check is called also for disabled crtcs it should skip
mode checking as it can be uninitialized. The patch fixes it.

Signed-off-by: Andrzej Hajda <a.hajda@samsung.com>
Suggested-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Tested-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
2015-12-20 01:39:10 +09:00
Dave Airlie
6545f31897 Merge branch 'linux-4.4' of git://github.com/skeggsb/linux into drm-fixes
single nouveau fix.

* 'linux-4.4' of git://github.com/skeggsb/linux:
  drm/nouveau/bios/fan: hardcode the fan mode to linear
2015-12-19 13:25:42 +10:00
Martin Peres
a814a29d7b drm/nouveau/bios/fan: hardcode the fan mode to linear
This is an oversight that made use of the trip-point-based fan managenent on
cards that never expose those. This led the fan to stay at fan_min.

Fortunately, the emergency code would kick when the temperature would reach
90°C.

Reported-by: Tom Englund <tomenglund26@gmail.com>
Tested-by: Tom Englund <tomenglund26@gmail.com>
Signed-off-by: Martin Peres <martin.peres@free.fr>
Tested-by: Daemon32 <lnf.purple@gmail.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92126
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Cc: stable@vger.kernel.org
2015-12-18 09:01:22 +10:00
Christian König
91acbeb68a drm/amdgpu: fix user fence handling
This fixes a random corruption under memory pressure. We need to fence
the BO for the user fence as well, otherwise it might be swapped out
and the GPU could write the fence value to an undesired location.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2015-12-16 17:48:59 -05:00
Ville Syrjälä
4655a12b81 drm: Don't overwrite UNVERFIED mode status to OK
The way the mode probing works is this:
1. All modes currently on the mode list are marked as UNVERIFIED
2. New modes are on the probed_modes list (they start with
   status OK)
3. Modes are moved from the probed_modes list to the actual
   mode list. If a mode already on the mode list is deemed
   to match one of the probed modes, the duplicate is dropped
   and the mode status updated to OK. After this the
   probed_modes list will be empty.
4. All modes on the mode list are verified to not violate any
   constraints. Any that do are marked as such.
5. Any mode left with a non-OK status is pruned from the list,
   with an appropriate debug message.

What all this means is that any mode on the original list that
didn't have a duplicate on the probed_modes list, should be left
with status UNVERFIED (or previously could have been left with
some other status, but never OK).

I broke that in
commit 05acaec334 ("drm: Reorganize probed mode validation")
by always assigning something to the mode->status during the validation
step. So any mode from the old list that still passed the validation
would be left on the list with status OK in the end.

Fix this by not doing the basic mode validation unless the mode
already has status OK (meaning it came from the probed_modes list,
or at least a duplicate of it was on that list). This way we will
correctly prune away any mode from the old mode list that didn't
appear on the probed_modes list.

Cc: stable@vger.kernel.org
Cc: Adam Jackson <ajax@redhat.com>
Fixes: 05acaec334 ("drm: Reorganize probed mode validation")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1449177255-9515-2-git-send-email-ville.syrjala@linux.intel.com
Testcase: igt/kms_force_connector_basic/prune-stale-modes
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=93332
[danvet: Also applying to drm-misc to avoid too much conflict hell -
there's a big pile of patches from Ville on top of this one.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-12-15 11:00:10 +10:00
Dave Airlie
2344164a27 Merge tag 'drm-intel-fixes-2015-12-11' of git://anongit.freedesktop.org/drm-intel into drm-fixes
Here are some i915 fixes for v4.4, sorry for being late this week.

* tag 'drm-intel-fixes-2015-12-11' of git://anongit.freedesktop.org/drm-intel:
  drm/i915: Do a better job at disabling primary plane in the noatomic case.
  drm/i915/skl: Double RC6 WRL always on
  drm/i915/skl: Disable coarse power gating up until F0
  drm/i915: Remove incorrect warning in context cleanup
2015-12-15 10:25:21 +10:00
Tomi Valkeinen
1d977b06f8 drm/omap: fix fbdev pix format to support all platforms
omap_fbdev always creates a framebuffer with ARGB8888 pixel format. On
OMAP3 we have VIDEO1 overlay that does not support ARGB8888, and on
OMAP2 none of the overlays support ARGB888.

This patch changes the omap_fbdev's fb to XRGB8888, which is supported
by all platforms.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Tested-by: H. Nikolaus Schaller <hns@goldelico.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2015-12-14 10:00:22 +02:00
Kirill A. Shutemov
9f5bd30818 vgaarb: fix signal handling in vga_get()
There are few defects in vga_get() related to signal hadning:

  - we shouldn't check for pending signals for TASK_UNINTERRUPTIBLE
    case;

  - if we found pending signal we must remove ourself from wait queue
    and change task state back to running;

  - -ERESTARTSYS is more appropriate, I guess.

Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Cc: stable@vger.kernel.org
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-12-11 14:04:44 +10:00
Dave Airlie
49307da31b Merge branch 'drm-fixes-4.4' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
some big endian fixes and one regression fix.

* 'drm-fixes-4.4' of git://people.freedesktop.org/~agd5f/linux:
  radeon: Fix VCE IB test on Big-Endian systems
  radeon: Fix VCE ring test for Big-Endian systems
  radeon/cik: Fix GFX IB test on Big-Endian
  drm/amdgpu: fix the lost duplicates checking
2015-12-11 14:04:09 +10:00
Maarten Lankhorst
634b3a4a47 drm/i915: Do a better job at disabling primary plane in the noatomic case.
When disable_noatomic is called plane_mask is not correct yet, and
plane_state->visible = true is left as true after disabling the primary
plane.

Other planes are already disabled as part of crtc sanitization, only the
primary is left active. But the plane_mask is not updated here. It gets
updated during fb takeover in modeset_gem_init, or set to the new value
on resume.

This means that to disable the primary plane 1 << drm_plane_index(primary)
needs to be used.

Afterwards because the crtc is no longer active it's forbidden to keep
plane_state->visible set, or a WARN_ON in
intel_plane_atomic_calc_changes triggers. There are other code points
that rely on accurate plane_state->visible too, so make sure the bool is
cleared.

The other planes are already disabled in intel_sanitize_crtc, so they
don't have to be handled here.

Cc: stable@vger.kernel.org #v4.3, v4.2?
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92655
Tested-by: Tomas Mezzadra <tmezzadra@gmail.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/5652DB88.9070208@linux.intel.com
(cherry picked from commit 54a4196188eab82e6f0a5f05716626e9f18b8fb6)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-12-10 13:33:42 +02:00
Oded Gabbay
361c32d390 radeon: Fix VCE IB test on Big-Endian systems
This patch makes the VCE IB test pass on Big-Endian systems. It converts
to little-endian the contents of the VCE message.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2015-12-09 00:23:56 -05:00
Oded Gabbay
687f4b98d1 radeon: Fix VCE ring test for Big-Endian systems
This patch fixes the VCE ring test when running on Big-Endian machines.
Every write to the ring needs to be translated to little-endian.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2015-12-09 00:22:44 -05:00
Oded Gabbay
5f3e226f51 radeon/cik: Fix GFX IB test on Big-Endian
This patch makes the IB test on the GFX ring pass for CI-based cards
installed in Big-Endian machines.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2015-12-09 00:20:45 -05:00
Chunming Zhou
e410b5cbab drm/amdgpu: fix the lost duplicates checking
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Cc: stable@vger.kernel.org
2015-12-09 00:18:33 -05:00