Arkadiusz Hiler [Tue, 14 Mar 2017 14:28:09 +0000 (15:28 +0100)]
drm/i915/uc: Introduce intel_uc_init_fw()
Instead of calling intel_guc_init() and intel_huc_init() one by one this
patch introduces intel_uc_init_fw() function that calls them both.
Called functions are renamed accordingly.
Trying to have subject_verb_object ordering and more descriptive names,
the intel_huc_init() and intel_guc_init() functions are renamed.
For guc_init():
* `intel_guc` is the subject, so those functions now take intel_guc
structure, instead of the dev_priv
* init is the verb
* fw is the object which better describes the function's role
huc_init() change follows the same reasoning.
v2: settle on intel_uc_fetch_fw name (M. Wajdeczko)
v3: yet another rename - intel_uc_init_fw (J. Lahtinen)
v4: non-trivial rebase
Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: Michal Winiarski <michal.winiarski@intel.com> Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Arkadiusz Hiler [Tue, 14 Mar 2017 14:28:08 +0000 (15:28 +0100)]
drm/i915/uc: Move intel_uc_fw_fetch() to intel_uc.c
The file fits better.
Additionally rename it to intel_uc_prepare_fw(), as the function does
more than simple fetch.
`obj` cleanup in the function is also fixed (i.e. removed). In the fail
scenario it was always 'put' but there's no possible flow that
initializes the obj properly and then goes to the fail label.
v2: remove second declaration, reorder (M. Wajdeczko)
v3: non-trivial rebase
v4: remove obj cleanup in the fail scenario (C. Wilson)
Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Michal Wajdeczko <michal.wajdeczko@intel.com> Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com> Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com> Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Arkadiusz Hiler [Tue, 14 Mar 2017 14:28:07 +0000 (15:28 +0100)]
drm/i915/uc: Rename intel_?uc_{setup, load}() to _init_hw()
GuC historically has two "startup" functions called _init() and _setup()
Then HuC came with it's _init() and _load().
This commit renames intel_guc_setup() and intel_huc_load() to
*uc_init_hw() as they called from the i915_gem_init_hw().
The aim is to be consistent in that entry points called during
particular driver init phases (e.g. init_hw) are all suffixed by that
phase. When reading the leaf functions, it should be clear at what stage
during the driver load it is called and therefore what operations are
legal at that point.
Also, since the functions start with intel_guc and intel_huc they take
appropiate structure.
v2: commit message update (Chris Wilson)
v3: change taken parameters to be more "semantic" (M. Wajdeczko)
Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Michal Winiarski <michal.winiarski@intel.com> Cc: Michal Wajdeczko <michal.wajdeczko@intel.com> Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Chris Wilson [Tue, 14 Mar 2017 11:50:19 +0000 (11:50 +0000)]
drm/i915: Avoid rcu_barrier() from reclaim paths (shrinker)
The rcu_barrier() takes the cpu_hotplug mutex which itself is not
reclaim-safe, and so rcu_barrier() is illegal from inside the shrinker.
[ 309.661373] =========================================================
[ 309.661376] [ INFO: possible irq lock inversion dependency detected ]
[ 309.661380] 4.11.0-rc1-CI-CI_DRM_2333+ #1 Tainted: G W
[ 309.661383] ---------------------------------------------------------
[ 309.661386] gem_exec_gttfil/6435 just changed the state of lock:
[ 309.661389] (rcu_preempt_state.barrier_mutex){+.+.-.}, at: [<ffffffff81100731>] _rcu_barrier+0x31/0x160
[ 309.661399] but this lock took another, RECLAIM_FS-unsafe lock in the past:
[ 309.661402] (cpu_hotplug.lock){+.+.+.}
[ 309.661404]
and interrupts could create inverse lock ordering between them.
[ 309.661410]
other info that might help us debug this:
[ 309.661414] Possible interrupt unsafe locking scenario:
drm/i915/glk: Improve rounding caused by pre-CSC gamma tables
The 33rd entry in the pre-CSC gamma table in Geminilake can represent a
value of 1.0 as 17 bits fixed point with one integer bit. However, the
table was generated such that the value of 1.0 would be 0.ffff with
all the intervals scaled accordingly. For instance, 0.5 mapped to
0.7fff instead of 0.8000.
For a reason that is not clear to the author, the rounding seems to be
different when a cursor plane is used, leading to some seemingly random
failures of the kms_cursor_crc igt tests. The differences weren't
perceptible at 8bpc with images captured by a Chamelium device, but did
cause CRC mismatches.
Daniel Vetter [Wed, 8 Mar 2017 14:12:45 +0000 (15:12 +0100)]
drm/i915: Merge pre/postclose hooks
There's really not a reason afaics that we can't just clean up
everything at the end, in the terminal postclose hook: Since this is
closing a file descriptor we know no one else can have a reference or
a thread doing something with that drm_file except the close code.
Ordering shouldn't matter, as long as we don't kfree before we clean
stuff up.
In the past this was more relevant when drivers still had to track and
clean up pending drm events, but that's all done by the core now.
Since commit c8ebfad7a063 ("drm/i915: Ignore OpRegion panel type except
on select machines") we ignore the OpRegion panel type except for
specific machines (handled via a DMI match), so having SKL explicitly
excluded from using the OpRegion panel type is redundant. So let's
remove the SKL check.
Daniel Vetter [Sun, 12 Mar 2017 20:53:40 +0000 (21:53 +0100)]
drm/i915: annote drop_caches debugfs interface with lockdep
The trouble we have is that we can't really test all the shrinker
recursion stuff exhaustively in BAT because any kind of thrashing
stress test just takes too long.
But that leaves a really big gap open, since shrinker recursions are
one of the most annoying bugs. Now lockdep already has support for
checking allocation deadlocks:
- Direct reclaim paths are marked up with
lockdep_set_current_reclaim_state() and
lockdep_clear_current_reclaim_state().
- Any allocation paths are marked with lockdep_trace_alloc().
If we simply mark up our debugfs with the reclaim annotations, any
code and locks taken in there will automatically complete the picture
with any allocation paths we already have, as long as we have a simple
testcase in BAT which throws out a few objects using this interface.
Not stress test or thrashing needed at all.
v2: Need to EXPORT_SYMBOL_GPL to make it compile as a module.
v3: Fixup rebase fail (spotted by Chris).
Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: linux-kernel@vger.kernel.org Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: http://patchwork.freedesktop.org/patch/msgid/20170312205340.16202-1-daniel.vetter@ffwll.ch Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Jani Nikula [Fri, 10 Mar 2017 13:27:58 +0000 (15:27 +0200)]
drm/i915/vbt: split out defaults that are set when there is no VBT
The main thing are the DDI ports. If there's a VBT that says there are
no outputs, we should trust that, and not have semi-random
defaults. Unfortunately, the defaults have resulted in some Chromebooks
without VBT to rely on this behaviour, so we split out the defaults for
the missing VBT case.
Ville Syrjälä [Thu, 9 Mar 2017 15:44:34 +0000 (17:44 +0200)]
drm/i915: Optimize VLV/CHV display FIFO updates
Use I915_{READ,WRITE}_FW() for updating the DSPARB registers on
VLV/CHV. This is less expesive as we can grab the uncore.lock across
the entire sequence of reads and writes instead of each register
access grabbing it.
This also allows us to eliminate the dsparb lock entirely as the
uncore.lock now effectively protects the contents of the DSPARB
registers.
v2: Add a note that interrupts are already disabled (Chris)
Ville Syrjälä [Thu, 9 Mar 2017 15:44:33 +0000 (17:44 +0200)]
drm/i915: Use I915_READ_FW for plane updates
Optimize the plane register accesses a little bit by grabbing
the uncore lock manually across the entire pile of accesses and
using I915_READ_FW().
This helps keep the pipe update vblank evade critical section
below our 100 usec deadline, particularly with lockdep enabled.
And in general we want to keep that critical section as short
as possible as it's executed with interrupts disabled.
Not all plane updates currently happen from within the vblank evade
critical section, so we must use the irqsave/irqrestore variants
of the spinlock functions in the plane hooks.
Ville Syrjälä [Thu, 9 Mar 2017 15:44:32 +0000 (17:44 +0200)]
drm/i915: Organize plane register writes into tighter bunches
Pull all the plane register writes closer together to avoid having
a lot of unrelated stuff in between them. This will make things more
clear once we'll grab the uncore lock around the entire bunch. Also
in the future we might even consider moving more of the register
value computation out from the plane update hooks. This should make
that easier to do.
Ville Syrjälä [Thu, 9 Mar 2017 15:44:31 +0000 (17:44 +0200)]
drm/i915: s/__raw_i915_read32/I915_READ_FW/ in the SKL+ scanline read w/a
Replace __raw_i915_read32() with I915_READ_FW() in the workaround for
the SKL+ scanline counter hardware fail. The two are the same thing
but everyone else uses I915_READ_FW() so let's follow suit.
Ville Syrjälä [Mon, 13 Feb 2017 17:58:18 +0000 (19:58 +0200)]
drm/i915: Reject HDMI 12bpc if the sink doesn't indicate support
Check that the sink really declared 12bpc support before we enable it.
This should not actually never happen since it's mandatory for HDMI
sinks to support 12bpc if they support any deep color modes. But
reality disagrees with the theory and there are actually sinks in
the wild that violate the spec.
v2: Fix the output_types check
Update commit message to state that these things are in fact real
Chris Wilson [Mon, 13 Mar 2017 09:56:17 +0000 (09:56 +0000)]
drm/i915: Extend rpm wakelock for debugfs/i915_drpc_info
i915_drpc_info missed covering a few register read with the runtime pm
wakelock. Be simple and cover the entire function with a single wakelock
so that new additions are not similarly missed in future.
Chris Wilson [Mon, 13 Mar 2017 10:07:50 +0000 (10:07 +0000)]
drm/i915/selftests: Fix error path for ggtt walk_hole()
The patch 6e32ab3d4777: "drm/i915: Fill different pages of the GTT"
from Feb 13, 2017, leads to the following static checker warning:
drivers/gpu/drm/i915/selftests/i915_gem_gtt.c:583 walk_hole()
error: 'vma' dereferencing possible ERR_PTR()
Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Fixes: 6e32ab3d4777 ("drm/i915: Fill different pages of the GTT" Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Matthew Auld <matthew.auld@intel.com> Cc: Mika Kuoppala <mika.kuoppala@intel.com> Cc: <drm-intel-fixes@lists.freedesktop.org> Link: http://patchwork.freedesktop.org/patch/msgid/20170313100750.2685-1-chris@chris-wilson.co.uk Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Chris Wilson [Fri, 10 Mar 2017 00:09:42 +0000 (00:09 +0000)]
drm/i915: Move whole object to CPU domain for coherent shmem access
If the object is coherent, we can simply update the cache domain on the
whole object rather than calculate the before/after clflushes. The
advantage is that we then get correct tracking of ellided flushes when
changing coherency later.
Chris Wilson [Sun, 12 Mar 2017 13:27:45 +0000 (13:27 +0000)]
drm/i915: Rename REDIRECT_TO_GUC bit
The REDIRECT_TO_GUC bit is a strange beast as it is a disable bit -
setting the bit in the pm interrupt generation stops the interrupt going
to the guc (not sending it to the guc as the name implies). To help the
reader rename it to DISABLE_REDIRECT_TO_GUC so that we keep the bspec
greppable name without it being as confusing!
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Oscar Mateo <oscar.mateo@intel.com> Cc: Radoslaw Szwichtenberg <radoslaw.szwichtenberg@intel.com> Cc: Sagar Arun Kamble <sagar.a.kamble@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170312132745.9618-1-chris@chris-wilson.co.uk Reviewed-by: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Jani Nikula [Fri, 10 Mar 2017 13:27:57 +0000 (15:27 +0200)]
drm/i915/vbt: don't propagate errors from intel_bios_init()
We don't use the error return for anything other than reporting and
logging that there is no VBT. We can pull the logging in the function,
and remove the error status return. Moreover, if we needed the
information for something later on, we'd probably be better off storing
the bit in dev_priv, and using it where it's needed, instead of using
the error return.
drm/i915/guc: Update rps.pm_intrmsk_mbz in guc_interrupts_capture/release
Different state is to be maintained for rps.pm_intrmsk_mbz for GuC and
Execlists. Updating it inside guc_interrupts_* routines as in those
routines GuC load/submission params are sanitized and it should not be set
based on HAS_GUC_SCHED during intel_irq_init.
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Oscar Mateo <oscar.mateo@intel.com> Cc: Radoslaw Szwichtenberg <radoslaw.szwichtenberg@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Sagar Arun Kamble <sagar.a.kamble@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1489199821-6707-3-git-send-email-sagar.a.kamble@intel.com Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Chris Wilson [Thu, 9 Mar 2017 21:12:32 +0000 (21:12 +0000)]
drm/i915: Defer unmasking RPS interrupts until after making adjustments
To make our adjustments to RPS requires taking a mutex and potentially
sleeping for an unknown duration - until we have completed our
adjustments further RPS interrupts are immaterial (they are based on
stale thresholds) and we can safely ignore them.
Chris Wilson [Thu, 9 Mar 2017 21:12:31 +0000 (21:12 +0000)]
drm/i915: Use max(render, media) for Baytrail busyness calculation
Currently, we sum the render and media cycles (on different engines) to
compute a percentage - but we fail to factor in the duplication into the
threshold calculations. This makes us very eager to upclock!
If we just consider the maximum busy cycles of either counter, we should
have an accurate reflection on whether there are cycles to spare to
handle the workload at this frequency.
Chris Wilson [Thu, 9 Mar 2017 21:12:30 +0000 (21:12 +0000)]
drm/i915: Stop using RP_DOWN_EI on Baytrail
On Baytrail, we manually calculate busyness over the evaluation interval
to avoid issues with miscaluations with RC6 enabled. However, it turns
out that the DOWN_EI interrupt generator is completely bust - it
operates in two modes, continuous or never. Neither of which are
conducive to good behaviour. Stop unmask the DOWN_EI interrupt and just
compute everything from the UP_EI which does seem to correspond to the
desired interval.
v2: Fixup gen6_rps_pm_mask() as well
v3: Inline vlv_c0_above() to combine the now identical elapsed
calculation for up/down and simplify the threshold testing
Chris Wilson [Wed, 8 Mar 2017 14:46:22 +0000 (14:46 +0000)]
drm/i915: Extend debugfs/i915_drop_caches to call i915_gem_shrink_all()
Sometimes we want to explicitly page out all available objects from igt,
i.e. call i915_gem_shrink_all() and check that subsequent operations
succeed. This adds DROP_SHRINK_ALL [0x8] to the set of flags for
debugfs/i915_drop_caches for that purpose.
Chris Wilson [Fri, 10 Mar 2017 11:55:18 +0000 (11:55 +0000)]
drm/i915/cmdparser: Limit clflush to active cachelines
We only need to clflush those cachelines that we have validated to be
read by the GPU. Userspace typically fills the batch length in
correctly, the exceptions tend to be explicit tests within igt.
v2: Use ptr_mask_bits() to make Mika happy
v3: cmd is not advanced on MI_BBE, so make sure to include an extra
dword in the clflush.
Tvrtko Ursulin [Fri, 10 Mar 2017 09:32:49 +0000 (09:32 +0000)]
drm/i915: Fix forcewake active domain tracking
In commit 003342a50021 ("drm/i915: Keep track of active
forcewake domains in a bitmask") I forgot to adjust the
newly introduce fw_domains_active state across reset.
This caused the assert_forcewakes_inactive to trigger
during suspend and resume if there were user held
forcewakes.
v2: Bitmask checks are required since vfuncs are not
always present.
v3: Move bitmask tracking to get/put vfunc for simplicity.
(Chris Wilson)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Fixes: 003342a50021 ("drm/i915: Keep track of active forcewake domains in a bitmask")
Testcase: igt/drv_suspend/forcewake Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: "Paneri, Praveen" <praveen.paneri@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Daniel Vetter <daniel.vetter@intel.com> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: intel-gfx@lists.freedesktop.org Cc: v4.10+ <stable@vger.kernel.org> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/20170310093249.4484-1-tvrtko.ursulin@linux.intel.com
Shashank Sharma [Thu, 9 Mar 2017 13:43:41 +0000 (19:13 +0530)]
drm/i915: Remove intel_ prefix from encoder variables in intel_ddi.c
In I915 driver, there are many places where variable name for
intel_encoder object is given as 'intel_encoder' whereas it would
make more sense to call it just 'encoder' when possible.
This patch does this cleanup in file intel_ddi.c.
PS: There are few functions where both drm_encoder and intel_encoder
are present. For such functions, this patch does nothing.
Suggested-by: Ander Conselvan De Oliveira <conselvan2@gmail.com> Signed-off-by: Shashank Sharma <shashank.sharma@intel.com> Acked-by: Jani Nikula <jani.nikula@intel.com> Reviewed-by: Ander Conselvan De Oliveira <conselvan2@gmail.com> Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1489067021-4709-1-git-send-email-shashank.sharma@intel.com
Andrew Morton [Thu, 9 Mar 2017 23:47:37 +0000 (15:47 -0800)]
drivers/gpu/drm/i915/selftests/i915_selftest.c: fix build with gcc-4.4.4
gcc-4.4.4 has issues with anonymous union initializers.
In file included from drivers/gpu/drm/i915/selftests/i915_selftest.c:68:
drivers/gpu/drm/i915/selftests/i915_mock_selftests.h:11: error: unknown field 'mock' specified in initializer
drivers/gpu/drm/i915/selftests/i915_mock_selftests.h:11: warning: missing braces around initializer
drivers/gpu/drm/i915/selftests/i915_mock_selftests.h:11: warning: (near initialization for 'mock_selftests[0].<anonymous>')
drivers/gpu/drm/i915/selftests/i915_mock_selftests.h:12: error: unknown field 'mock' specified in initializer
drivers/gpu/drm/i915/selftests/i915_mock_selftests.h:13: error: unknown field 'm
...
Work around this.
Fixes: 953c7f82eb89 ("drm/i915: Provide a hook for selftests") Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/20170310090314.3142-1-chris@chris-wilson.co.uk Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Tvrtko Ursulin [Thu, 9 Mar 2017 13:20:04 +0000 (13:20 +0000)]
drm/i915/guc: Fix request re-submission after reset
In order to ensure no missed interrupts we must first re-direct
the interrupts to GuC, and only then re-submit the requests to
be replayed after a GPU reset. Otherwise context switch can fire
before GuC has been set up to receive it triggering more hangs.
v2: Rebase.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Cc: Oscar Mateo <oscar.mateo@intel.com> Cc: Sagar Arun Kamble <sagar.a.kamble@intel.com> Cc: Arkadiusz Hiler <arkadiusz.hiler@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/20170309132005.1317-1-tvrtko.ursulin@linux.intel.com
Chris Wilson [Thu, 9 Mar 2017 14:20:49 +0000 (14:20 +0000)]
drm/i915: Ignore skl+ for debugfs/i915_sr_status
There is no easily digestible single self-refresh status bit, so don't
report one for debugfs/i915_sr_status on gen9+. For the moment this
avoids a read of the non-existent WM1_LP_ILK register.
drm/i915: Initialize pm_intr_keep during intel_irq_init for GuC
Driver needs to ensure that it doesn't mask the PM interrupts, which are
unmasked/needed by GuC firmware. For that, Driver maintains a bitmask of
interrupts to be kept unmasked, pm_intr_keep.
pm_intr_keep was determined across GuC load. GuC gets loaded in different
scenarios and it is not going to change the pm_intr_keep so this patch
moves its setup to intel_irq_init.
This patch fixes incorrect RPS masking leading to UP interrupts triggered
even when at cur_freq=max and inversly for Down interrupts.
Cc: Radoslaw Szwichtenberg <radoslaw.szwichtenberg@intel.com> Cc: Arkadiusz Hiler <arkadiusz.hiler@intel.com> Cc: Michal Wajdeczko <michal.wajdeczko@intel.com> Cc: Michal Winiarski <michal.winiarski@intel.com> Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com> Signed-off-by: Sagar Arun Kamble <sagar.a.kamble@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/1488862355-9768-1-git-send-email-sagar.a.kamble@intel.com
drm/i915: Nuke skl_update_plane debug message from the pipe update critical section
printks are slow so we should not be doing them from the vblank evade
critical section. These could explain why we sometimes seem to
blow past our 100 usec deadline.
The problem has been there ever since commit c331879ce8ea ("drm/i915:
skylake sprite plane scaling using shared scalers.") but it may not have
been readily visible until commit e1edbd44e23b ("drm/i915: Complain
if we take too long under vblank evasion.") increased our chances
of noticing it.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1488974407-25175-1-git-send-email-maarten.lankhorst@linux.intel.com Fixes: c331879ce8ea ("drm/i915: skylake sprite plane scaling using shared scalers") Cc: <stable@vger.kernel.org> # v4.2+ Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
[mlankhorst: Add missing tags, point to the correct offending commit]
Matthew Auld [Mon, 6 Mar 2017 23:54:01 +0000 (23:54 +0000)]
drm/i915: use correct node for handling cache domain eviction
It looks like we were incorrectly comparing vma->node against itself
instead of the target node, when evicting for a node on systems where we
need guard pages between regions with different cache domains. As a
consequence we can end up trying to needlessly evict neighbouring nodes,
even if they have the same cache domain, and if they were pinned we
would fail the eviction.
Fixes: 625d988acc28 ("drm/i915: Extract reserving space in the GTT to a helper") Signed-off-by: Matthew Auld <matthew.auld@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/20170306235414.23407-3-matthew.auld@intel.com Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Matthew Auld [Mon, 6 Mar 2017 23:54:00 +0000 (23:54 +0000)]
drm/i915/selftests: don't leak the gem object
For our fake dma objects we can leak the underlying gem object if we
fail to pin our "backing storage".
[ 39.952618] =============================================================================
[ 39.952625] BUG mock_object (Tainted: G U ): Objects remaining in mock_object on __kmem_cache_shutdown()
[ 39.952629] -----------------------------------------------------------------------------
v2: use onion teardown and favour i915_gem_object_put
Fixes: 8d28ba4568f4 ("drm/i915: Exercise filling the top/bottom portions of the ppgtt") Signed-off-by: Matthew Auld <matthew.auld@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Link: http://patchwork.freedesktop.org/patch/msgid/20170306235414.23407-2-matthew.auld@intel.com Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Chris Wilson [Wed, 8 Mar 2017 21:59:03 +0000 (21:59 +0000)]
drm/i915/userptr: Disallow wrapping GTT into a userptr
If we allow the user to convert a GTT mmap address into a userptr, we
may end up in recursion hell, where currently we hit a mutex deadlock
but other possibilities include use-after-free during the
unbind/cancel_userptr.
To prevent the possibility of a deadlock, we defer scheduling the worker
until after we have proven that given the current mm, the userptr range
does not overlap a GGTT mmaping. If another thread tries to remap the
GGTT over the userptr before the worker is scheduled, it will be stopped
by its invalidate-range flushing the current work, before the deadlock
can occur.
v2: Improve discussion of how we end up in the deadlock.
v3: Don't forget to mark the userptr as active after a successful
gup_fast. Rename overlaps_ggtt to noncontiguous_or_overlaps_ggtt.
v4: Fix test ordering between invalid GTT mmaping and range completion
(Tvrtko)
Reported-by: Michał Winiarski <michal.winiarski@intel.com>
Testcase: igt/gem_userptr_blits/map-fixed-invalidate-gup Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Michał Winiarski <michal.winiarski@intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170308215903.24171-1-chris@chris-wilson.co.uk Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Chris Wilson [Tue, 7 Mar 2017 20:58:50 +0000 (20:58 +0000)]
drm/i915/userptr: Only flush the workqueue if required
To avoid waiting for work from other invalidate-range threads where
not required, only wait on the userptr cancel workqueue if we have added
some work to it.
Daniel Vetter [Wed, 1 Mar 2017 09:52:26 +0000 (10:52 +0100)]
drm/i915: Fix up verify_encoder_state
The trouble here is that looking at all connector->state in the
verifier isn't good, because that's run from the commit work, which
doesn't hold the connection_mutex. Which means we're only allowed to
look at states in our atomic update.
The simple fix for future proofing would be to switch over to
drm_for_each_connector_in_state, but that has the problem that the
verification then fails if not all connectors are in the state. And we
also need to be careful to check both old and new encoders, and not
screw things up when an encoder gets reassigned.
Note that this isn't the full fix, since we still look at
connector->state. To fix that, we need Maarten's patch series to
switch over to state pointers within drm_atomic_state, but that's a
different series.
v2: Use oldnew iterator (Maarten).
v3: Rebase onto the iter_get/put->iter_begin/end rename.
Daniel Vetter [Wed, 1 Mar 2017 09:52:25 +0000 (10:52 +0100)]
drm/i915: use for_each_intel_connector_iter in intel_display.c
This gets rid of the last users of for_each_intel_connector(), remove
that too.
At first I wasn't sure whether the 2 loops in the modeset state
checker should instead only loop over the connectors in the atomic
commit. But we never add connectors to an atomic update if they don't
(or won't have) a CRTC assigned, which means there'd be a gap in check
coverage. Hence loop over everything on those too.
v2: Rebase onto the iter_get/put->iter_begin/end rename.
Daniel Vetter [Wed, 1 Mar 2017 09:52:24 +0000 (10:52 +0100)]
drm/i915: Make intel_get_pipe_from_connector atomic
Drive-by fixup while looking at all the connector_list walkers -
holding connection_mutex does actually _not_ give you locking to look
at the legacy drm_connector->encoder->crtc pointer chain. That one is
solely owned by the atomic commit workers. Instead we must inspect the
atomic state.
Daniel Vetter [Wed, 1 Mar 2017 09:52:21 +0000 (10:52 +0100)]
drm/i915: Use drm_connector_list_iter in debugfs
While at it also try to reduce the locking a bit to what's really just
needed instead of everything that we could possibly lock.
Added a new for_each_intel_connector_iter which includes the cast to
intel_connector.
Otherwise just plain transformation with nothing special going on.
v2: Review from Maarten:
- Stick with modeset_lock_all in sink_crc, it looks at crtc->state.
- Fix up early loop exit in i915_displayport_test_active_write.
v3: Rebase onto the iter_get/put->iter_begin/end rename.
Chris Wilson [Wed, 8 Mar 2017 14:22:38 +0000 (14:22 +0000)]
drm/i915: Check for an invalid seqno before __i915_gem_request_started
__i915_gem_request_started() asserts that the seqno is valid, but
i915_spin_request() was not checking before querying whether the request
had started.
Reported-by: Michał Winiarski <michal.winiarski@intel.com> Fixes: 754c9fd57649 ("drm/i915: Protect the request->global_seqno with the engine->timeline lock") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Michał Winiarski <michal.winiarski@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170308142238.22994-1-chris@chris-wilson.co.uk Reviewed-by: Michał Winiarski <michal.winiarski@intel.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Chris Wilson [Wed, 8 Mar 2017 13:26:29 +0000 (13:26 +0000)]
drm/i915: Purge i915_gem_object_is_dead()
i915_gem_object_is_dead() was a temporary lockdep aide whilst
transitioning to a new locking structure for obj->mm. Since commit 1233e2db199d ("drm/i915: Move object backing storage manipulation to its
own locking") it is now unused and should be removed.
Ville Syrjälä [Tue, 7 Mar 2017 19:42:10 +0000 (21:42 +0200)]
drm/i915: Use DRM_DEBUG_KMS() for framebuffer failure debug messages
DRM_UT_CORE generates way too much noise usually, so having the
framebuffer init failures use DRM_UT_CORE is a pain when trying to
find out the reason why you failed in creating a framebuffer.
Let's use DRM_UT_KMS for these debug messages instead.
v2: s/at less than/at most/ in the debug message (Imre)
Ville Syrjälä [Tue, 7 Mar 2017 19:42:08 +0000 (21:42 +0200)]
drm/i915: Avoid div-by-zero when computing aux_stride w/o an aux plane
To make life easier let's allow skl_plane_stride() to be called for the
AUX surface even when there is no AUX surface. Avoids special cases in
the callers.
Ville Syrjälä [Tue, 7 Mar 2017 19:42:07 +0000 (21:42 +0200)]
drm/i915: Move nv12 chroma plane handling into intel_surf_alignment()
Let's try to keep the alignment requirements in one place, and so
towards that end let's move the AUX_DIST alignment handling into
intel_surf_alignment() alongside the main surface alignment stuff.
Ville Syrjälä [Tue, 7 Mar 2017 19:42:06 +0000 (21:42 +0200)]
drm/i915: Plumb drm_framebuffer into more places
Now that framebuffers can be used even before calling
drm_framebuffer_init() we can start to plumb them into more places,
instead of passing individual pieces for fb metadata.
Bing Niu [Wed, 8 Mar 2017 20:14:03 +0000 (15:14 -0500)]
drm/i915: suppress atomic commit error message under gvt-g env
under virtualization enviroment, it is possible guest update pipe
registers across vblank intervals due to overhead of mmio traps or vm
schedule out. However, it is safe since those pipe update happen in
virual registers and will not be committed to hardware. suppress that
atomic commit error message under virtualization case to avoid
confusing user.
v2: per ville's comment: return early and against Maarten's patch
v3: coding style clean
Ville Syrjälä [Tue, 7 Mar 2017 20:54:19 +0000 (22:54 +0200)]
drm/i915: Nuke debug messages from the pipe update critical section
printks are slow so we should not be doing them from the vblank evade
critical section. These could explain why we sometimes seem to
blow past our 100 usec deadline.
The problem has been there ever since commit bfd16b2a23dc ("drm/i915:
Make updating pipe without modeset atomic.") but it may not have
been readily visible until commit e1edbd44e23b ("drm/i915: Complain
if we take too long under vblank evasion.") increased our chances
of noticing it.
Cc: stable@vger.kernel.org Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Fixes: bfd16b2a23dc ("drm/i915: Make updating pipe without modeset atomic.") Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170307205419.19447-1-ville.syrjala@linux.intel.com Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Daniel Vetter [Wed, 8 Mar 2017 09:54:45 +0000 (10:54 +0100)]
Merge remote-tracking branch 'airlied/drm-next' into drm-intel-next-queued
Backmerge drm-next to get at all the good stuff in drm-misc. We need
that because:
- drm_connector_list_iter conversion for i915 needs the core patches.
- Maarten's patches to use the new atomic state iterators also need
the core patches.
- We need the new link status property to complete the DP retraining
work, merging through 2 branches wasn't a good idea and we had to
partially backtrack.
- Chris needs reservation_object_trylock and we want to roll out
kref_read everywhere.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Dave Airlie [Wed, 8 Mar 2017 02:54:58 +0000 (12:54 +1000)]
Merge branch 'linux-4.12' of git://github.com/skeggsb/linux into drm-next
- Re-architecture of the code to handle proprietary fw, more abstracted
to support the multitude of differences that NVIDIA introduce
- Support in the said code for GP10x ACR and GR fw, giving acceleration
support \o/
- Fix for GTX 970 GPUs that are in an odd MMU configuration
* 'linux-4.12' of git://github.com/skeggsb/linux: (60 commits)
drm/nouveau/fb/gf100-: rework ram detection
drm/nouveau/fb/gm200: split ram implementation from gm107
drm/nouveau/fb/gf108: split implementation from gf100
drm/nouveau/fb/gf100-: modify constructors to allow more customisation
drm/nouveau/kms/nv50: use drm core i2c-over-aux algorithm
drm/nouveau/i2c/g94-: return REPLY_M value on reads
drm/nouveau/i2c: modify aux interface to return length actually transferred
drm/nouveau/gp10x: enable secboot and GR
drm/nouveau/gr/gp102: initial support
drm/nouveau/falcon: support for gp10x msgqueue
drm/nouveau/secboot: add gp102/gp104/gp106/gp107 support
drm/nouveau/secboot: put HS code loading code into own file
drm/nouveau/secboot: support for r375 ACR
drm/nouveau/secboot: support for r367 ACR
drm/nouveau/secboot: support for r364 ACR
drm/nouveau/secboot: workaround bug when starting SEC2 firmware
drm/nouveau/secboot: support standard NVIDIA HS binaries
drm/nouveau/secboot: support for unload blob bootloader
drm/nouveau/secboot: let callers interpret return value of blobs
drm/nouveau/secboot: support for different load and unload falcons
...
Dave Airlie [Wed, 8 Mar 2017 02:41:47 +0000 (12:41 +1000)]
Merge tag 'drm-intel-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-intel into drm-next
4 weeks worth of stuff since I was traveling&lazy:
- lspcon improvements (Imre)
- proper atomic state for cdclk handling (Ville)
- gpu reset improvements (Chris)
- lots and lots of polish around fences, requests, waiting and
everything related all over (both gem and modeset code), from Chris
- atomic by default on gen5+ minus byt/bsw (Maarten did the patch to
flip the default, really this is a massive joint team effort)
- moar power domains, now 64bit (Ander)
- big pile of in-kernel unit tests for various gem subsystems (Chris),
including simple mock objects for i915 device and and the ggtt
manager.
- i915_gpu_info in debugfs, for taking a snapshot of the current gpu
state. Same thing as i915_error_state, but useful if the kernel didn't
notice something is stick. From Chris.
- bxt dsi fixes (Umar Shankar)
- bxt w/a updates (Jani)
- no more struct_mutex for gem object unreference (Chris)
- some execlist refactoring (Tvrtko)
- color manager support for glk (Ander)
- improve the power-well sync code to better take over from the
firmware (Imre)
- gem tracepoint polish (Tvrtko)
- lots of glk fixes all around (Ander)
- ctx switch improvements (Chris)
- glk dsi support&fixes (Deepak M)
- dsi fixes for vlv and clanups, lots of them (Hans de Goede)
- switch to i915.ko types in lots of our internal modeset code (Ander)
- byt/bsw atomic wm update code, yay (Ville)
* tag 'drm-intel-next-2017-03-06' of git://anongit.freedesktop.org/git/drm-intel: (432 commits)
drm/i915: Update DRIVER_DATE to 20170306
drm/i915: Don't use enums for hardware engine id
drm/i915: Split breadcrumbs spinlock into two
drm/i915: Refactor wakeup of the next breadcrumb waiter
drm/i915: Take reference for signaling the request from hardirq
drm/i915: Add FIFO underrun tracepoints
drm/i915: Add cxsr toggle tracepoint
drm/i915: Add VLV/CHV watermark/FIFO programming tracepoints
drm/i915: Add plane update/disable tracepoints
drm/i915: Kill level 0 wm hack for VLV/CHV
drm/i915: Workaround VLV/CHV sprite1->sprite0 enable underrun
drm/i915: Sanitize VLV/CHV watermarks properly
drm/i915: Only use update_wm_{pre,post} for pre-ilk platforms
drm/i915: Nuke crtc->wm.cxsr_allowed
drm/i915: Compute proper intermediate wms for vlv/cvh
drm/i915: Skip useless watermark/FIFO related work on VLV/CHV when not needed
drm/i915: Compute vlv/chv wms the atomic way
drm/i915: Compute VLV/CHV FIFO sizes based on the PM2 watermarks
drm/i915: Plop vlv/chv fifo sizes into crtc state
drm/i915: Plop vlv wm state into crtc_state
...
Chris Wilson [Tue, 7 Mar 2017 12:03:38 +0000 (12:03 +0000)]
drm/i915: Use pagecache write to prepopulate shmemfs from pwrite-ioctl
Before we instantiate/pin the backing store for our use, we
can prepopulate the shmemfs filp efficiently using a write into the
pagecache. We avoid the penalty of instantiating all the pages, important
if the user is just writing to a few and never uses the object on the GPU,
and using a direct write into shmemfs allows it to avoid the cost of
retrieving a page (mostly the clear-before-use, but in theory we could
curtail swapin) before it is overwritten.
This can be extended later to provide additional specialisation for
other backends (other than shmemfs). For now it provides a defense
against very large write-only allocations from exhausting all of system
memory.
v2: Smelling fixes.
Fixes: fe115628d567 ("drm/i915: Implement pwrite without struct-mutex")
References: https://bugs.freedesktop.org/show_bug.cgi?id=99107 Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Matthew Auld <matthew.william.auld@gmail.com> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Cc: <stable@vger.kernel.org> # v4.10+ Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170307120338.7277-2-chris@chris-wilson.co.uk
Chris Wilson [Tue, 7 Mar 2017 13:20:31 +0000 (13:20 +0000)]
drm/i915: Store a permanent error in obj->mm.pages
Once the object has been truncated, it is unrecoverable. To facilitate
detection of this state store the error in obj->mm.pages.
This is required for the next patch which should be applied to v4.10
(via stable), so we also need to mark this patch for backporting. In
that regard, let's consider this to be a fix/improvement too.
v2: Avoid dereferencing the ERR_PTR when freeing the object.
Fixes: 1233e2db199d ("drm/i915: Move object backing storage manipulation to its own locking") Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: <stable@vger.kernel.org> # v4.10+ Link: http://patchwork.freedesktop.org/patch/msgid/20170307132031.32461-1-chris@chris-wilson.co.uk Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
The IS_G4X macro is defined as IS_G45 || IS_GM45. We have two points
in our code where we have an if statement checking for GM45 followed
by an else if statement checking for IS_G4X. This can be confusing
since the IS_G4X check won't be catching the previously-checked GM45.
Someone quickly trying to check which functions run on each platform
may end up getting confused while reading the code.
Fix the potential confusion by limiting the else if statements to only
check for the platform that was not already checked earlier in the if
ladder.
Chris Wilson [Tue, 7 Mar 2017 15:59:08 +0000 (15:59 +0000)]
drm/i915: Flush idle work when changing missed-irq fault injection
In order for the missed-irq update to take effect, the device must be
idle. So when the user updates the fault injection via debugfs, idle the
device.
v2: Idle is explicitly required for setting test_irq, and good behaviour
for clearing the missed_irq.
v3: Use matching types; expanding to more than ulong rings is left as an
exercise to the reader.
Jani Nikula [Mon, 6 Mar 2017 14:31:29 +0000 (16:31 +0200)]
drm/i915/dsi: rename intel_dsi_panel_vbt.c to intel_dsi_vbt.c
Emphasize that the VBT file is nowadays more about initializing and
running stuff based on the VBT contents, not so much about being a
"panel driver". No functional changes.
Jani Nikula [Tue, 7 Mar 2017 09:24:19 +0000 (11:24 +0200)]
drm/i915/dsi: rename intel_dsi_pre_disable to intel_dsi_disable
The hook names reflect more the phase in the mode set sequence the hooks
are called in than what they actually do in terms of the specific
encoder. Stick to that scheme, and rename intel_dsi_pre_disable to
intel_dsi_disable. Unify the comments around this while at it. No
functional changes.
v2: Add more sense in the enable/disable hook comments (Ville)
Reviewed-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Bob Paauwe <bob.j.paauwe@intel.com> Cc: Madhav Chauhan <madhav.chauhan@intel.com> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Bob Paauwe <bob.j.paauwe@intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1488878659-10386-1-git-send-email-jani.nikula@intel.com
Jani Nikula [Mon, 6 Mar 2017 14:31:26 +0000 (16:31 +0200)]
drm/i915/dsi: stop using the drm_panel framework completely
Now that we've stopped using the drm_panel hooks, there aren't any
benefits left with using the drm_panel framework. Remove the rest of the
drm_panel use. No functional changes.
Jani Nikula [Mon, 6 Mar 2017 14:31:25 +0000 (16:31 +0200)]
drm/i915/dsi: call vbt_panel_get_modes directly instead of via drm_panel
Commit 18a00095a5f3 ("drm/i915/dsi: Make intel_dsi_enable/disable
directly exec VBT sequences") started calling the VBT sequence functions
directly instead of using the drm_panel hooks. Remove the last drm_panel
hook by calling vbt_panel_get_modes() directly. No functional changes.
Chris Wilson [Fri, 3 Mar 2017 15:46:44 +0000 (15:46 +0000)]
drm/i915: Avoid clearing the base drm_crtc_state
To prevent having to preserve the drm_crtc_state as we clear the
intel_crtc_state, only memset our extended state.
Fixes:
drivers/gpu/drm/i915/intel_display.c: In function ‘clear_intel_crtc_state’:
drivers/gpu/drm/i915/intel_display.c:11301:1: error: the frame size of 1056 bytes is larger than 1024 bytes [-Werror=frame-larger-than=]
v2: Add a comment and BUILD_BUG_ON to explain the memset()
Tvrtko Ursulin [Mon, 6 Mar 2017 15:03:20 +0000 (15:03 +0000)]
drm/i915: No need to save/restore irq status in intel_breadcrumbs_fake_irq
Timer callback is a known context so it is correct to always
disable interrupts.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Tvrtko Ursulin [Mon, 6 Mar 2017 15:03:19 +0000 (15:03 +0000)]
drm/i915: No need to save/restore irq status in __i915_request_irq_complete
It is always called from thread context.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Ben Skeggs [Thu, 2 Mar 2017 03:53:05 +0000 (13:53 +1000)]
drm/nouveau/fb/gf100-: rework ram detection
This commit reworks the RAM detection algorithm, using RAM-per-LTC to
determine whether a board has a mixed-memory configuration instead of
using RAM-per-FBPA. I'm not certain the algorithm is perfect, but it
should handle all currently known configurations in the very least.
This should fix GTX 970 boards with 4GiB of RAM where the last 512MiB
isn't fully accessible, as well as only detecting half the VRAM on
GF108 boards.
As a nice side-effect, GP10x memory detection now reuses the majority
of the code from earlier chipsets.
Ben Skeggs [Tue, 28 Feb 2017 23:42:04 +0000 (09:42 +1000)]
drm/nouveau/kms/nv50: use drm core i2c-over-aux algorithm
I'm not entirely sure NVKM needs to support this now, but I haven't
removed it as of yet just in case it's needed from DEVINIT scripts
where DRM isn't available.
Ben Skeggs [Tue, 28 Feb 2017 23:01:08 +0000 (09:01 +1000)]
drm/nouveau/i2c: modify aux interface to return length actually transferred
Apparently sinks are allows to respond with ACK even if they didn't
fully complete a transaction... It seems like a missed opportunity
for DEFER to me, but what do I know :)
drm/nouveau/secboot: add gp102/gp104/gp106/gp107 support
These gp10x chips are supporting using (roughly) the same firmware.
Compared to previous secure chips, ACR runs on SEC2 and so does the
low-secure msgqueue.
ACR for these chips is based on r367.
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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