Commit Graph

635441 Commits

Author SHA1 Message Date
Imre Deak 8bf41b7298 drm/i915/gen6+: Clear upper data byte during PCODE write
The spec calls for the upper data byte to be cleared before most of the
PCODE write commands, for others like IPS control it doesn't say
anything about this byte. Let's clear it in case it's clobbered somehow,
especially that there are places where we only do a PCODE write without
a preceding PCODE read.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1480346969-16121-1-git-send-email-imre.deak@intel.com
2016-12-02 16:32:44 +02:00
Libin Yang f55d23be11 drm/i915/audio: extend audio sync rate support for DP MST
Remove the type judgement in i915_audio_component_sync_audio_rate().
Audio rate sync is necessary for all i915 digital audio now.

Signed-off-by: Libin Yang <libin.yang@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1480569439-54252-2-git-send-email-libin.yang@intel.com
2016-12-02 16:20:48 +02:00
Libin Yang 31613268c0 drm/i915/audio: extend get_saved_enc() to support more scenarios
In initialization, audio driver will call functions get_eld() and etc.
But at that time, audio driver may not know whether it is DP MST or not.
In the original function get_saved_enc(), if it is DP MST, it requires to
set the pipe to the correct value, otherwise, pipe to be -1.

Although audio driver can get the knowledge whether it is in DP MST mode
or not by reading the codec register. It will drop performance each time
before it calls the get_eld and other similar functions. As gfx driver can
easily know whether it is in DP MST mode or not. Let's extend the
get_saved_enc() function to handle the situation that audio driver
still sends the device id info even it is in DP SST mode and return
the correct intel_encoder instead of panic.

Signed-off-by: Libin Yang <libin.yang@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1480569439-54252-1-git-send-email-libin.yang@intel.com
2016-12-02 16:20:37 +02:00
Matthew Auld a9a251c2ae drm/i915: make i915_suspend_switcheroo static
Looks like this was missed when unexporting, so let's keep sparse happy.

Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Fixes: 7f26cb8801 ("drm/i915: Unexport VGA switcheroo functions")
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161202102411.19831-1-matthew.auld@intel.com
2016-12-02 11:26:51 +00:00
Tvrtko Ursulin b6ea8b4a8e drm/i915: Fix kerneldoc for intel_guc_fini
Recent refactoring forgot to update this one.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Fixes: bf9e8429ab ("drm/i915: Make various init functions take dev_priv")
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1480668233-25372-1-git-send-email-tvrtko.ursulin@linux.intel.com
2016-12-02 09:55:46 +00:00
Ander Conselvan de Oliveira 93de056bab drm/i915: Fix intel_psr_init() kerneldoc
In commit c39055b072 ("drm/i915: Pass dev_priv to
intel_setup_outputs()"), I forgot to update the kerneldoc for
intel_psr_init() init, leading to warnings when building the
documentation:

    drivers/gpu/drm/i915/intel_psr.c:822: warning: No description found for parameter 'dev_priv'
    drivers/gpu/drm/i915/intel_psr.c:822: warning: Excess function parameter 'dev' description in 'intel_psr_init'

Fixes: c39055b072 ("drm/i915: Pass dev_priv to intel_setup_outputs()")
Cc: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1480420127-11382-1-git-send-email-ander.conselvan.de.oliveira@intel.com
2016-12-02 09:54:05 +02:00
Tvrtko Ursulin 192aa18142 drm/i915: Make intel_pm_setup take dev_priv
Function actually wants dev_priv so give it to it.

v2: Commit message. (Joonas Lahtinen)

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1480601805-14391-2-git-send-email-tvrtko.ursulin@linux.intel.com
2016-12-01 18:01:24 +00:00
Tvrtko Ursulin af6dc7425b drm/i915: Make i915_save/restore_state and intel_i2c_reset take dev_priv
dev_priv is more appropriate since it is used much more in these.

v2: Commit message and keep the local pdev variable. (Joonas Lahtinen)

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2016-12-01 18:01:23 +00:00
Tvrtko Ursulin 12ff05e750 drm/i915: Make i915_destroy_error_state take dev_priv
Since it does not need dev at all.

Also change the stored pointer in struct i915_error_state_file_priv
to i915.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2016-12-01 18:01:23 +00:00
Tvrtko Ursulin 401964465f drm/i915: Make gmbus setup take dev_priv
Simplify the code by passing the right argument in.

v2: Commit message. (Joonas Lahtinen)

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2016-12-01 18:01:22 +00:00
Tvrtko Ursulin 7f26cb8801 drm/i915: Unexport VGA switcheroo functions
They are only used in i915_drv.c so a forward declaration is enough.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2016-12-01 18:01:22 +00:00
Tvrtko Ursulin da5f53bf3c drm/i915: dev_priv cleanup in bridge/bar/mmio init code
dev_priv is more appropriate for these so converting saves
some lines of source.

v2: Commit message and keep the pdev local variable. (Joonas Lahtinen)

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2016-12-01 18:01:17 +00:00
Tvrtko Ursulin cb15d9f8c3 drm/i915: More GEM init dev_priv cleanup
Simplifies the code to pass the right parameter in.

v2: Commit message. (Joonas Lahtinen)

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2016-12-01 18:01:16 +00:00
Tvrtko Ursulin bf9e8429ab drm/i915: Make various init functions take dev_priv
Like GEM init, GUC init, MOCS init and context creation.

Enables them to lose dev_priv locals.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2016-12-01 18:01:15 +00:00
Tvrtko Ursulin 12d79d7828 drm/i915: Make GEM object create and create from data take dev_priv
Makes all GEM object constructors consistent.

v2: Fix compilation in GVT code.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> (v1)
2016-12-01 18:01:08 +00:00
Tvrtko Ursulin 187685cb90 drm/i915: Make GEM object alloc/free and stolen created take dev_priv
Where it is more appropriate and also to be consistent with
the direction of the driver.

v2: Leave out object alloc/free inlining. (Joonas Lahtinen)

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2016-12-01 18:00:15 +00:00
Imre Deak 908764f6d0 drm/i915/lspcon: Enable AUX interrupts for resume time initialization
For LSPCON initialization during system resume we need AUX
functionality, but we call the corresponding encoder reset hook with all
interrupts disabled. Without interrupts we'll do a poll-wait for AUX
transfer completions, which adds a significant delay if the transfers
timeout/need to be retried for some reason.

Fix this by enabling interrupts before calling the reset hooks. Note
that while this will enable AUX interrupts it will keep HPD interrupts
disabled, in a similar way to the init time output setup code.

This issue existed since LSPCON support was added.

v2:
- Rebased on drm-tip.

Cc: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Tested-by: David Weinehall <david.weinehall@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1480448429-27739-1-git-send-email-imre.deak@intel.com
2016-12-01 15:22:50 +02:00
Ander Conselvan de Oliveira 3e4274f86e drm/i915/glk: Add a IS_GEN9_LP() macro
Broxton and Geminilake are both gen9lp platforms. To avoid adding
IS_GEMINILAKE() checks everywhere alongside the IS_BROXTON() ones, add a
IS_GEN9_LP() macro.

v2: Rename macro parameter to dev_priv. (Joonas)
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2016-12-01 13:41:27 +02:00
Ander Conselvan de Oliveira 8363e3c394 drm/i915/glk: Add Geminilake PCI IDs
v2: Add new 0x3185 ID. (Joonas)
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1478791400-21756-4-git-send-email-ander.conselvan.de.oliveira@intel.com
2016-12-01 13:41:27 +02:00
Ander Conselvan de Oliveira c22097fa47 drm/i915/glk: Introduce Geminilake platform definition
Geminilake is an Intel® Processor containing Intel® HD Graphics
following Broxton.

Let's start by adding the platform definition. PCI IDs and plaform
specific code will follow.

v2: Rebase (don't allow dev to be used with the new macro).

v3: Update ddb size. (Matt)
    Rebase on s/preliminary_hw/alpha/

Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@gmail.com>
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1479133526-32389-1-git-send-email-ander.conselvan.de.oliveira@intel.com
2016-12-01 13:41:26 +02:00
Rodrigo Vivi 80fa66b6ad drm/i915: Create a common GEN9_LP_FEATURE.
The following LP platform inherits a lot of this platform
So let's simplify here to re-use this later.

v2: Keep ddb_size out of the new macro.
v3: Rebase (has_decoupled_mmio). (Imre)

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1480584796-19466-1-git-send-email-ander.conselvan.de.oliveira@intel.com
2016-12-01 13:41:26 +02:00
Chris Wilson cd8bddc4ab drm/i915/perf: Treat u64 in uabi as a normal integer
Forgo marking up the u64 integer representing a user pointer as this
just annoys sparse. The conversion from u64 to a user pointer is managed
by u64_to_user_ptr().

Fixes: eec688e142 ("drm/i915: Add i915 perf infrastructure")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Robert Bragg <robert@sixbynine.org>
Cc: Matthew Auld <matthew.auld@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161130164649.26809-1-chris@chris-wilson.co.uk
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
2016-12-01 07:37:51 +00:00
Daniel Vetter d4881a48a8 drm/i915: Remove dummy i915_kick_out_firmware_fb
Since

commit 44adece57e
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Wed Aug 10 18:52:34 2016 +0200

    drm/fb-helper: Add a dummy remove_conflicting_framebuffers

the drm helpers take care of this for us.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161130110131.25668-1-daniel.vetter@ffwll.ch
2016-11-30 20:34:16 +01:00
Ville Syrjälä 6a259b1f8a drm/i915: Initialize dev_priv->atomic_cdclk_freq at init time
Looks like we're only initializing dev_priv->atomic_cdclk_freq
at resume and commit times, not at init time. Let's do that as
well.

We're now hitting the 'WARN_ON(intel_state->cdclk == 0)' in
hsw_compute_linetime_wm() on account of populating
intel_state->cdclk from dev_priv->atomic_cdclk_freq.
Previously we were mispopulating intel_state->cdclk with
dev_priv->cdclk_freq which always had a proper value at init
time and hence the WARN_ON() didn't trigger.

Cc: stable@vger.kernel.org
Cc: Matthew Auld <matthew.auld@intel.com>
Reported-by: Matthew Auld <matthew.auld@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98902
Fixes: e0ca7a6be3 ("drm/i915: Fix cdclk vs. dev_cdclk mess when not recomputing things")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1480428837-4207-1-git-send-email-ville.syrjala@linux.intel.com
Tested-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
2016-11-29 19:52:38 +02:00
Chris Wilson 34ba5a80f2 drm/i915/guc: Split hw submission for replay after GPU reset
Something I missed before sending off the partial series was that the
non-scheduler guc reset path was broken (in the full series, this is
pushed to the execlists reset handler). The issue is that after a reset,
we have to refill the GuC workqueues, which we do by resubmitting the
requests. However, if we already have submitted them, the fences within
them have already been used and triggering them again is an error.
Instead, just repopulate the guc workqueue.

[  115.858560] [IGT] gem_busy: starting subtest hang-render
[  135.839867] [drm] GPU HANG: ecode 9:0:0xe757fefe, in gem_busy [1716], reason: Hang on render ring, action: reset
[  135.839902] drm/i915: Resetting chip after gpu hang
[  135.839957] [drm] RC6 on
[  135.858351] ------------[ cut here ]------------
[  135.858357] WARNING: CPU: 2 PID: 45 at drivers/gpu/drm/i915/i915_sw_fence.c:108 i915_sw_fence_complete+0x25/0x30
[  135.858357] Modules linked in: rfcomm bnep binfmt_misc nls_iso8859_1 input_leds snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core btusb btrtl snd_hwdep snd_pcm 8250_dw snd_seq_midi hid_lenovo snd_seq_midi_event snd_rawmidi iwlwifi x86_pkg_temp_thermal coretemp snd_seq crct10dif_pclmul snd_seq_device hci_uart snd_timer crc32_pclmul ghash_clmulni_intel idma64 aesni_intel virt_dma btbcm snd btqca aes_x86_64 btintel lrw cfg80211 bluetooth gf128mul glue_helper ablk_helper cryptd soundcore intel_lpss_pci intel_pch_thermal intel_lpss_acpi intel_lpss acpi_als mfd_core kfifo_buf acpi_pad industrialio autofs4 hid_plantronics usbhid dm_mirror dm_region_hash dm_log sdhci_pci ahci sdhci libahci i2c_hid hid
[  135.858389] CPU: 2 PID: 45 Comm: kworker/2:1 Tainted: G        W       4.9.0-rc4+ #238
[  135.858389] Hardware name:                  /NUC6i3SYB, BIOS SYSKLi35.86A.0024.2015.1027.2142 10/27/2015
[  135.858392] Workqueue: events_long i915_hangcheck_elapsed
[  135.858394]  ffffc900001bf9b8 ffffffff812bb238 0000000000000000 0000000000000000
[  135.858396]  ffffc900001bf9f8 ffffffff8104f621 0000006c00000000 ffff8808296137f8
[  135.858398]  0000000000000a00 ffff8808457a0000 ffff880845764e60 ffff880845760000
[  135.858399] Call Trace:
[  135.858403]  [<ffffffff812bb238>] dump_stack+0x4d/0x65
[  135.858405]  [<ffffffff8104f621>] __warn+0xc1/0xe0
[  135.858406]  [<ffffffff8104f748>] warn_slowpath_null+0x18/0x20
[  135.858408]  [<ffffffff813f8c15>] i915_sw_fence_complete+0x25/0x30
[  135.858410]  [<ffffffff813f8fad>] i915_sw_fence_commit+0xd/0x30
[  135.858412]  [<ffffffff8142e591>] __i915_gem_request_submit+0xe1/0xf0
[  135.858413]  [<ffffffff8142e5c8>] i915_gem_request_submit+0x28/0x40
[  135.858415]  [<ffffffff814433e7>] i915_guc_submit+0x47/0x210
[  135.858417]  [<ffffffff81443e98>] i915_guc_submission_enable+0x468/0x540
[  135.858419]  [<ffffffff81442495>] intel_guc_setup+0x715/0x810
[  135.858421]  [<ffffffff8142b6b4>] i915_gem_init_hw+0x114/0x2a0
[  135.858423]  [<ffffffff813eeaa8>] i915_reset+0xe8/0x120
[  135.858424]  [<ffffffff813f3937>] i915_reset_and_wakeup+0x157/0x180
[  135.858426]  [<ffffffff813f79db>] i915_handle_error+0x1ab/0x230
[  135.858428]  [<ffffffff812c760d>] ? scnprintf+0x4d/0x90
[  135.858430]  [<ffffffff81435985>] i915_hangcheck_elapsed+0x275/0x3d0
[  135.858432]  [<ffffffff810668cf>] process_one_work+0x12f/0x410
[  135.858433]  [<ffffffff81066bf3>] worker_thread+0x43/0x4d0
[  135.858435]  [<ffffffff81066bb0>] ? process_one_work+0x410/0x410
[  135.858436]  [<ffffffff81066bb0>] ? process_one_work+0x410/0x410
[  135.858438]  [<ffffffff8106bbb4>] kthread+0xd4/0xf0
[  135.858440]  [<ffffffff8106bae0>] ? kthread_park+0x60/0x60

v2: Only resubmit submitted requests
v3: Don't forget the pending requests have reserved space.

Fixes: d55ac5bf97 ("drm/i915: Defer transfer onto execution timeline to actual hw submission")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161129121024.22650-6-chris@chris-wilson.co.uk
2016-11-29 15:52:46 +00:00
Chris Wilson 4d357af499 drm/i915/guc: Keep the execbuf client allocated across reset
In order to avoid some complexity in trying to reconstruct the
workqueues across reset, remember them instead. The issue comes when we
have to handle a reset between request allocation and submission, the
request has reserved space in the wq, but is not in any list so we fail
to restore the reserved space. By keeping the execbuf client intact
across the reset, we also keep the reservations.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161129121024.22650-5-chris@chris-wilson.co.uk
2016-11-29 15:52:45 +00:00
Chris Wilson 597bdc8bb2 drm/i915/guc: Initialise doorbell cookie to matching value
Set the initial value of the doorbell cookie from the client.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161129121024.22650-4-chris@chris-wilson.co.uk
2016-11-29 15:52:43 +00:00
Chris Wilson 357248bfe5 drm/i915/guc: Rename client->cookie to match use
The client->cookie is a shadow of the doorbell->cookie value, so rename
it to indicate its association with the doorbell, like the doorbell id
and offset.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161129121024.22650-3-chris@chris-wilson.co.uk
2016-11-29 15:52:41 +00:00
Chris Wilson 334636c67e drm/i915: Trim i915_guc_info() stack usage
i915_guc_info() (part of debugfs output) tries to avoid holding
struct_mutex for a long period by copying onto the stack. This causes a
warning that the stack frame is massive, so stop doing that. We can even
forgo holding the struct_mutex here as that doesn't serialise the values
being read (and the lists used exist for the device lifetime).

v2: Skip printing anything if guc->execbuf_client is disabled (avoids
potential NULL dereference).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20161129121024.22650-2-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
2016-11-29 15:52:29 +00:00
Libin Yang 7f9e77545b drm/i915: enable dp mst audio
This patch adds support for DP MST audio in i915.

Enable audio codec when DP MST is enabled if has_audio flag is set.
Disable audio codec when DP MST is disabled if has_audio flag is set.

Another separated patches to support DP MST audio will be implemented
in audio driver.

This patch is ported from
commit 3708d5e082 ("drm/i915: start adding dp mst audio")

And because commit 3708d5e082 ("drm/i915: start adding dp mst audio")
breaks MST multi-monitor setups on some platforms, the orignal patch is
reverted by
commit be754b101f ("Revert "drm/i915: start adding dp mst audio"")

As the multi-monitor setups issue is fixed, let's port the patch and
enable the dp mst audio.

Signed-off-by: Libin Yang <libin.yang@intel.com>
Cc: Lyude <cpaul@redhat.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1480334827-112273-3-git-send-email-libin.yang@intel.com
2016-11-29 17:42:10 +02:00
Libin Yang 9935f7fa28 drm/i915: abstract ddi being audio enabled
Prepare for using the same code for judging ddi being audio enabled.
No functional changes.

Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: Libin Yang <libin.yang@intel.com>
Reviewed-by: Lyude <cpaul@redhat.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1480334827-112273-2-git-send-email-libin.yang@intel.com
2016-11-29 17:41:46 +02:00
Libin Yang 9a148a96fc drm/i915/debugfs: add dp mst info
Add the DP MST info dump in debugfs.

Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: Libin Yang <libin.yang@intel.com>
Reviewed-by: Lyude <cpaul@redhat.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1480334827-112273-1-git-send-email-libin.yang@intel.com
2016-11-29 17:33:35 +02:00
Chris Wilson c6385c947f drm/i915: Fix tracepoint compilation
drivers/gpu/drm/i915/./i915_trace.h: In function ‘trace_event_raw_event_i915_gem_evict’:
drivers/gpu/drm/i915/./i915_trace.h:409:24: error: ‘struct i915_address_space’ has no member named ‘dev’
       __entry->dev = vm->dev->primary->index;

A couple of macros missed in the s/vm->dev/vm->i915/ conversion.

Fixes: 49d73912cb ("drm/i915: Convert vm->dev backpointer to vm->i915")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161129124205.19351-1-chris@chris-wilson.co.uk
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
2016-11-29 12:54:03 +00:00
Chris Wilson 2460393583 drm/i915/perf: Wrap 64bit divides in do_div()
Just a couple of naked 64bit divides causing link errors on 32bit
builds, with:

	ERROR: "__udivdi3" [drivers/gpu/drm/i915/i915.ko] undefined!

v2: do_div() is only u64/u32, we need a u32/u64!
v3: div_u64() == u64/u32, div64_u64() == u64/u64

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: d79651522e ("drm/i915: Enable i915 perf stream for Haswell OA unit")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Robert Bragg <robert@sixbynine.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20161123150714.24449-1-chris@chris-wilson.co.uk
Reviewed-by: Robert Bragg <robert@sixbynine.org>
2016-11-29 11:41:33 +00:00
Chris Wilson 49d73912cb drm/i915: Convert vm->dev backpointer to vm->i915
99% of the time we access i915_address_space->dev we want the i915
device and not the drm device, so let's store the drm_i915_private
backpointer instead. The only real complication here are the inlines
in i915_vma.h where drm_i915_private is not yet defined and so we have
to choose an alternate path for our asserts.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161129095008.32622-1-chris@chris-wilson.co.uk
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
2016-11-29 11:38:00 +00:00
Jérémy Lefaure 3aaa8aba9f drm/i915: fix compilation warnings on maybe uninitialized pointers
Two warnings are produced by gcc (tested with gcc 6.2.1):

drivers/gpu/drm/i915/intel_csr.c: In function ‘csr_load_work_fn’:
drivers/gpu/drm/i915/intel_csr.c:400:5: error: ‘fw’ is used
uninitialized in this function [-Werror=uninitialized]
  if (fw)
       ^
and

In file included from drivers/gpu/drm/i915/i915_drv.h:47:0,
                 from drivers/gpu/drm/i915/intel_guc_loader.c:30:
drivers/gpu/drm/i915/intel_guc_loader.c: In function ‘intel_guc_init’:
./include/drm/drmP.h:228:2: error: ‘fw’ may be used uninitialized in this
function  -Werror=maybe-uninitialized]
  drm_printk(KERN_DEBUG, DRM_UT_DRIVER, fmt, ##__VA_ARGS__)
  ^~~~~~~~~~
drivers/gpu/drm/i915/intel_guc_loader.c:595:25: note: ‘fw’ was declared here
  const struct firmware *fw;
                         ^~

When CONFIG_DRM_I915_WERROR is set, those warnings break the build.

Initializing fw pointer to NULL in both cases removes the warnings.

Signed-off-by: Jérémy Lefaure <jeremy.lefaure@lse.epita.fr>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161128234319.20800-1-jeremy.lefaure@lse.epita.fr
2016-11-29 11:31:01 +01:00
Zhi Wang a18dbba8f0 drm/i915: Move the release of PT page to the upper caller
a PT page will be released if it doesn't contain any meaningful mappings
during PPGTT page table shrinking. The PT entry in the upper level will
be set to a scratch entry.

Normally this works nicely, but in virtualization world, the PPGTT page
table is tracked by hypervisor. Releasing the PT page before modifying
the upper level PT entry would cause extra efforts.

As the tracked page has been returned to OS before losing track from
hypervisor, it could be written in any pattern. Hypervisor has to recognize
if a page is still being used as a PT page by validating these writing
patterns. It's complicated. Better let the guest modify the PT entry in
upper level PT first, then release the PT page.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Cc: Michel Thierry <michel.thierry@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Zhenyu Wang <zhenyuw@linux.intel.com>
Cc: Zhiyuan Lv <zhiyuan.lv@intel.com>
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Link: https://patchwork.freedesktop.org/patch/122697/msgid/1479728666-25333-1-git-send-email-zhi.a.wang@intel.com
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1480402516-22275-1-git-send-email-zhi.a.wang@intel.com
2016-11-29 09:29:56 +00:00
Matthew Auld ddbb271aea drm/i915: drop the struct_mutex when wedged or trying to reset
We grab the struct_mutex in intel_crtc_page_flip, but if we are wedged
or a reset is in progress we bail early but never seem to actually
release the lock.

Fixes: 7f1847ebf4 ("drm/i915: Simplify checking of GPU reset_counter in display pageflips")
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161128103648.9235-1-matthew.auld@intel.com
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: <stable@vger.kernel.org> # v4.7+
2016-11-29 09:25:04 +00:00
Chris Wilson 70cd14761d Revert "drm/i915/execlists: Use a local lock for dfs_link access"
This reverts commit 27745e829a ("drm/i915/execlists: Use a local lock
for dfs_link access") as the struct_mutex was required to prevent
concurrent retiring and freeing, now restored in the previous patch.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: David Weinehall <david.weinehall@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161128143649.4289-2-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
2016-11-29 09:17:23 +00:00
Chris Wilson 92117f0bce drm/i915: Move priority bumping for flips earlier
David found another issue with priority bumping from mmioflips, where we
are accessing the requests concurrently to them being retired and freed.
Whilst we are skipping the dependency if has been submitted, that is not
sufficient to stop the dependency from disappearing if another thread
retires that request. To prevent we can either employ the struct_mutex (or a
request mutex in the future) to serialise retiring before it is freed.
Alternatively, we need to keep the dependencies alive using RCU whilst
they are being accessed via the DFS.

[ 1746.698111] general protection fault: 0000 [#1] PREEMPT SMP
[ 1746.698305] Modules linked in: snd_hda_intel snd_hda_codec snd_hwdep x86_pkg_temp_thermal snd_hda_core coretemp crct10dif_pclmul crc32_pclmul snd_pcm ghash_clmulni_intel mei_me mei i915 e1000e ptp pps_core i2c_hid
[ 1746.698750] CPU: 1 PID: 6716 Comm: kworker/u8:2 Not tainted 4.9.0-rc6-CI-Nightly_816+ #1
[ 1746.698871] Hardware name: GIGABYTE GB-BKi7A-7500/MFLP7AP-00, BIOS F1 07/27/2016
[ 1746.699125] Workqueue: events_unbound intel_mmio_flip_work_func [i915]
[ 1746.699266] task: ffff880260a5e800 task.stack: ffffc90000f6c000
[ 1746.699361] RIP: 0010:[<ffffffffa006595d>]  [<ffffffffa006595d>] execlists_schedule+0x8d/0x300 [i915]
[ 1746.699632] RSP: 0018:ffffc90000f6fcd8  EFLAGS: 00010206
[ 1746.699724] RAX: dead0000000000f8 RBX: ffff8801f64b2bf0 RCX: ffff8801f64b2c10
[ 1746.699842] RDX: dead000000000100 RSI: 0000000000000000 RDI: ffff8801f64b0458
[ 1746.699972] RBP: ffffc90000f6fd68 R08: ffff88026488dc00 R09: 0000000000000002
[ 1746.700090] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000400
[ 1746.700195] R13: ffffc90000f6fcf0 R14: ffff88020955aa40 R15: ffff88020955aa68
[ 1746.700307] FS:  0000000000000000(0000) GS:ffff88026dc80000(0000) knlGS:0000000000000000
[ 1746.700435] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1746.700532] CR2: 0000000002a69e90 CR3: 0000000002c07000 CR4: 00000000003406e0
[ 1746.700635] Stack:
[ 1746.700682]  ffff880260a5e880 ffffc90000f6fd50 ffffffff810af69a ffffc90000f6fd28
[ 1746.700827]  ffff88020955a628 ffff8801e1eaebf0 0000000000000020 0000000000000000
[ 1746.700947]  00000196af1edc96 ffff88025dfa4000 ffff8801f0b030a8 ffffc90000f6fcf0
[ 1746.701071] Call Trace:
[ 1746.701117]  [<ffffffff810af69a>] ? dequeue_entity+0x25a/0xb50
[ 1746.701260]  [<ffffffffa00516be>] fence_set_priority+0x7e/0x80 [i915]
[ 1746.701406]  [<ffffffffa0051a15>] i915_gem_object_wait_priority+0x85/0x160 [i915]
[ 1746.701599]  [<ffffffffa008ccd7>] intel_mmio_flip_work_func+0x47/0x2b0 [i915]
[ 1746.701717]  [<ffffffff81094c4d>] process_one_work+0x14d/0x470
[ 1746.701809]  [<ffffffff81094fb3>] worker_thread+0x43/0x4e0
[ 1746.701888]  [<ffffffff81094f70>] ? process_one_work+0x470/0x470
[ 1746.701969]  [<ffffffff81094f70>] ? process_one_work+0x470/0x470
[ 1746.702072]  [<ffffffff8109a4d5>] kthread+0xc5/0xe0
[ 1746.702152]  [<ffffffff81771c59>] ? _raw_spin_unlock_irq+0x9/0x10
[ 1746.702234]  [<ffffffff8109a410>] ? kthread_park+0x60/0x60
[ 1746.702318]  [<ffffffff81772272>] ret_from_fork+0x22/0x30
[ 1746.702387] Code: 89 42 08 48 8b 45 88 48 89 55 c0 4c 89 6d c8 4c 8d 70 d8 4d 8d 7e 28 4d 39 ef 74 72 49 8b 1e 48 8b 13 48 39 d3 48 8d 42 f8 74 3e <48> 8b 10 8b 52 38 41 39 d4 7e 26 48 8b 50 30 48 8b 78 28 48 8d
[ 1746.702921] RIP  [<ffffffffa006595d>] execlists_schedule+0x8d/0x300 [i915]
Nov 25 21:42:54 kbl-gbbki7 kernel: [ 1746.703027]  RSP <ffffc90000f6fcd8>

Fixes: 27745e829a ("drm/i915/execlists: Use a local lock for dfs_link access")
Fixes: 9a151987d7 ("drm/i915: Add execution priority boosting for mmioflips")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: David Weinehall <david.weinehall@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161128143649.4289-1-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
2016-11-29 09:16:36 +00:00
Arkadiusz Hiler 8d6faaf65e drm/i915/guc: Remove spurious include
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michal Winiarski <michal.winiarski@intel.com>
Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1480096777-12573-6-git-send-email-arkadiusz.hiler@intel.com
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2016-11-25 21:42:37 +00:00
Arkadiusz Hiler 413e8fdb6a drm/i915/guc: Init send_mutex in intel_uc_init_early()
send_mutex is used to serialise communication with GuC via
intel_guc_send().

Since functions that utilize it are no longer limited to submission,
initialization should be handled as a part of general setup.

v2: move initialization to *_early()

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michal Winiarski <michal.winiarski@intel.com>
Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1480096777-12573-5-git-send-email-arkadiusz.hiler@intel.com
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2016-11-25 21:42:36 +00:00
Arkadiusz Hiler 2d803c2de0 drm/i915/guc: Move guc_{send,recv}() to intel_uc.c
guc_send(), guc_recv() and related functions were introduced in the
i915_guc_submission.c and their scope was limited only to that file.

Those are not submission specific though.
This patch moves moves them to intel_uc.c with intel_ prefix added.

v2: rename intel_guc_log_* functions and clean up intel_guc_send usages

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michal Winiarski <michal.winiarski@intel.com>
Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1480096777-12573-4-git-send-email-arkadiusz.hiler@intel.com
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2016-11-25 21:42:32 +00:00
Arkadiusz Hiler a80bc45ff0 drm/i915/guc: Drop guc2host/host2guc from names
To facilitate code reorganization we are renaming everything that
contains guc2host or host2guc.

host2guc_action() and host2guc_action_response() become guc_send()
and guc_recv() respectively.

Other host2guc_*() functions become simply guc_*().

Other entities are renamed basing on context they appear in:
 - HOST2GUC_ACTIONS_&           become INTEL_GUC_ACTION_*
 - HOST2GUC_{INTERRUPT,TRIGGER} become GUC_SEND_{INTERRUPT,TRIGGER}
 - GUC2HOST_STATUS_*            become INTEL_GUC_STATUS_*
 - GUC2HOST_MSG_*               become INTEL_GUC_RECV_MSG_*
 - action_lock                 becomes send_mutex

v2: drop unnecessary backslashes and use BIT() instead of '<<'
v3: shortened enum names and INTEL_GUC_STATUS_*

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michal Winiarski <michal.winiarski@intel.com>
Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1480096777-12573-3-git-send-email-arkadiusz.hiler@intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
2016-11-25 21:28:57 +00:00
Arkadiusz Hiler 8c4f24f95c drm/i915: Rename intel_guc.h to intel_uc.h
GuC is not the only one micro controller we have.

There are also HuC and DMC.

Making the file more general will help with code organization.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michal Winiarski <michal.winiarski@intel.com>
Signed-off-by: Arkadiusz Hiler <arkadiusz.hiler@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/1480096777-12573-2-git-send-email-arkadiusz.hiler@intel.com
2016-11-25 21:27:10 +00:00
Ander Conselvan de Oliveira a3f79ca63b drm/i915: Don't sanitize has_decoupled_mmio if platform is not broxton
The check in __intel_uncore_early_sanitize() to disable decoupled mmio
would disable it for every platform that is not broxton. While that's
not a problem now since only broxton supports that, simply setting
.has_decoupled_mmio in a new platform's device info wouldn't suffice. So
avoid future confusion and change the workaround to only change the
value of has_decoupled_mmio for broxton.

v2: git add compile fix. (Ander)

Cc: Praveen Paneri <praveen.paneri@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1479993807-29353-1-git-send-email-ander.conselvan.de.oliveira@intel.com
2016-11-25 16:43:45 +02:00
Ander Conselvan de Oliveira c39055b072 drm/i915: Pass dev_priv to intel_setup_outputs()
Pass dev_priv to intel_setup_outputs() and functions called by it, since
those are all intel i915 specific functions. Also, in the majority of
the functions dev_priv is used more often than dev. In the rare cases
where there are a few calls back into drm core, a local dev variable was
added.

v2: Don't convert dev to &dev_priv->drm in intel_dsi_init. (Ville)
Signed-off-by: Ander Conselvan de Oliveira <ander.conselvan.de.oliveira@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1479910904-11005-1-git-send-email-ander.conselvan.de.oliveira@intel.com
2016-11-25 16:43:24 +02:00
Chris Wilson fc1584059d drm/i915: Integrate i915_sw_fence with debugobjects
Add the tracking required to enable debugobjects for fences to improve
error detection in BAT. The debugobject interface lets us track the
lifetime and phases of the fences even while being embedded into larger
structs, i.e. to check they are not used after they have been released.

v2: Don't populate the stubs, debugobjects checks for a NULL pointer and
treats it equivalently.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161125131718.20978-4-chris@chris-wilson.co.uk
2016-11-25 13:49:26 +00:00
Chris Wilson 48bc2a4a42 drm/i915: Hold a reference on the request for its fence chain
Currently, we have an active reference for the request until it is
retired. Though it cannot be retired before it has been executed by
hardware, the request may be completed before we have finished
processing the execute fence, i.e. we may continue to process that fence
as we free the request.

Fixes: 5590af3e11 ("drm/i915: Drive request submission through fence callbacks")
Fixes: 23902e49c9 ("drm/i915: Split request submit/execute phase into two")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161125131718.20978-3-chris@chris-wilson.co.uk
2016-11-25 13:49:25 +00:00
Chris Wilson 1618bdb89b drm/i915: Assert no external observers when unwind a failed request alloc
Before we return the request back to the kmem_cache after a failed
i915_gem_request_alloc(), we should assert that it has not been added to
any global state tracking.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161125131718.20978-2-chris@chris-wilson.co.uk
2016-11-25 13:49:24 +00:00