drm/msm: fix memleak on release

If a process is interrupted while accessing the "gpu" debugfs file and
the drm device struct_mutex is contended, release() could return early
and fail to free related resources.

Note that the return value from release() is ignored.

Fixes: 4f776f4511c7 ("drm/msm/gpu: Convert the GPU show function to use the GPU state")
Cc: stable <stable@vger.kernel.org> # 4.18
Cc: Jordan Crouse <jcrouse@codeaurora.org>
Cc: Rob Clark <robdclark@gmail.com>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191010131333.23635-2-johan@kernel.org

Merge tag 'drm-misc-next-fixes-2019-11-06' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

msm: Fix up a6xx debugbus register names (Sharat)
mst: Avoid u64 division (Sean)

Cc: Sharat Masetty <smasetty@codeaurora.org>
Cc: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Sean Paul <sean@poorly.run>
Link: https://patchwork.freedesktop.org/patch/msgid/20191106202730.GA199896@art_vandelay

Merge tag 'drm-intel-next-fixes-2019-11-07' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

One RCU fix and fix for suspend GEM_BUG_ON (with dependencies).

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191107145058.GA17401@jlahtine-desk.ger.corp.intel.com

Merge tag 'mediatek-drm-next-5.5-2' of https://github.com/ckhu-mediatek/linux.git-tags into drm-next

Mediatek DRM next for Linux 5.5 - 2

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: CK Hu <ck.hu@mediatek.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1573093419.13645.5.camel@mtksdaap41

drm/mst: Fix up u64 division

Change rem_nsec to u32 since that's what do_div returns, this avoids the
u64 divide in the drm_print args.

Changes in v2:
- Instead of doing do_div in drm_print, make rem_nsec u32 (Ville)

Link to v1: https://patchwork.freedesktop.org/patch/msgid/20191106173622.15573-1-sean@poorly.run

Fixes: 12a280c72868 ("drm/dp_mst: Add topology ref history tracking for debugging")
Cc: Juston Li <juston.li@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Harry Wentland <hwentlan@amd.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Sean Paul <sean@poorly.run>
Cc: Lyude Paul <lyude@redhat.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191106194121.164458-1-sean@poorly.run

drm: msm: a6xx: fix debug bus register configuration

Fix the cx debugbus related register configuration, to collect accurate
bus data during gpu snapshot. This helps with complete snapshot dump
and also complete proper GPU recovery.

Fixes: 1707add81551 ("drm/msm/a6xx: Add a6xx gpu state")
Reviewed-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Sharat Masetty <smasetty@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/339165

drm/mediatek: Support 180 degree rotation

Now that we support both reflections, we can expose 180 degree rotation
and rely on the simplify routine to convert that into REFLECT_X |
REFLECT_Y

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: CK Hu <ck.hu@mediatek.com>

drm/mediatek: Support reflect-x plane rotation

Add support for REFLECT_X rotations.

Cc: Fritz Koenig <frkoenig@chromium.org>
Cc: Daniele Castagna <dcastagna@chromium.org>
Cc: Miguel Casas <mcasas@chromium.org>
Cc: Mark Yacoub <markyacoub@google.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: CK Hu <ck.hu@mediatek.com>

drm/mediatek: Support reflect-y plane rotation

Expose the rotation property and handle REFLECT_Y rotations.

Cc: Fritz Koenig <frkoenig@chromium.org>
Cc: Daniele Castagna <dcastagna@chromium.org>
Cc: Miguel Casas <mcasas@chromium.org>
Cc: Mark Yacoub <markyacoub@google.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: CK Hu <ck.hu@mediatek.com>

drm/mediatek: Plumb supported rotation values from components to plane init

This patch adds the ability for components to expose supported rotations
which will be exposed to userspace via a plane rotation property.

No functional changes in this patch.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: CK Hu <ck.hu@mediatek.com>

drm/mediatek: Add plumbing for layer_check hook

This allows components to implement a .layer_check callback for their
layers which is called during atomic_check.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: CK Hu <ck.hu@mediatek.com>

drm/mediatek: Add helper to get component for a plane

Instead of hard-coding which components have planes, add a helper
function to walk the components and map a plane index to a component
layer.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: CK Hu <ck.hu@mediatek.com>

drm/mediatek: Refactor plane init

Add a couple of functions which enumerate the number of planes for a
component and initialize the planes for a component.

No functional changes in this patch, but it will allow us to selectively
support rotation if the component supports it.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: CK Hu <ck.hu@mediatek.com>

drm/mediatek: Add RGB[A] variants to published plane formats

These formats are handled in the rdma code, but for some reason they're
not published as supported formats for the planes. So add them to the
list.

Cc: Nicolas Boichat <drinkcat@chromium.org>
Cc: Daniele Castagna <dcastagna@chromium.org>
Cc: Miguel Casas <mcasas@chromium.org>
Tested-by: Miguel Casas <mcasas@chromium.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: CK Hu <ck.hu@mediatek.com>

drm/i915: Don't select BROKEN

It's broken.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
References: https://lists.freedesktop.org/archives/dri-devel/2019-November/242625.html
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191105193829.11599-1-daniel.vetter@ffwll.ch

drm/dp_mst: fix gcc compile error

drivers/gpu/drm/drm_dp_mst_topology.c: In function __topology_ref_save:
drivers/gpu/drm/drm_dp_mst_topology.c:1424:6: error: implicit declaration of function stack_trace_save; did you mean stack_depot_save? [-Werror=implicit-function-declaration]
  n = stack_trace_save(stack_entries, ARRAY_SIZE(stack_entries), 1);
      ^~~~~~~~~~~~~~~~
      stack_depot_save
drivers/gpu/drm/drm_dp_mst_topology.c: In function __dump_topology_ref_history:
drivers/gpu/drm/drm_dp_mst_topology.c:1513:3: error: implicit declaration of function stack_trace_snprint; did you mean acpi_trace_point? [-Werror=implicit-function-declaration]
   stack_trace_snprint(buf, PAGE_SIZE, entries, nr_entries, 4);
   ^~~~~~~~~~~~~~~~~~~
   acpi_trace_point

stack_trace_save and stack_trace_snprint are declared in <linux/stacktrace.h>,
so there is need to include it, and <linux/stackdepot.h> is already included
by practices, so just replace <linux/stackdepot.h> by <linux/stacktrace.h>.

Signed-off-by: Chenwandun <chenwandun@huawei.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1572515029-42087-1-git-send-email-chenwandun@huawei.com

drm/i915/selftests: Add intel_gt_suspend_prepare

Call suspend_prepare first so that we don't leave GuC so confused.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191101174405.7389-1-chris@chris-wilson.co.uk
(cherry picked from commit 833e979db36c0202f21e1e0bdd7339a27e50b8e3)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

drm/i915/gt: Drop false assertion on user_forcewake

The counter is removed from the pm wakeref count, but it remains intact
so that we can restore it upon resume. Ergo inside suspend, it may have
a value.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Andi Shyti <andi.shyti@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191104090158.2959-1-chris@chris-wilson.co.uk
(cherry picked from commit 83c55ee82f3ac5a1c36dab9f7150554c4da773a8)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

drm/i915: Defer rc6 shutdown to suspend_late

Currently we shutdown rc6 during i915_gem_resume() but this is called
during the preparation phase (i915_drm_prepare) for all suspend paths,
but we only want to shutdown rc6 for S3+. Move the actual shutdown to
i915_gem_suspend_late().

We then need to differentiate between suspend targets, to distinguish S0
(s2idle) where the device is kept awake but needs to be in a low power
mode (the same as runtime suspend) from the device suspend levels where
we lose control of HW and so must disable any HW access to dangling
memory.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111909
Fixes: c113236718e8 ("drm/i915: Extract GT render sleep (rc6) management")
Testcase: igt/gem_exec_suspend/power-S0
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Andi Shyti <andi.shyti@intel.com>
Acked-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191101141009.15581-4-chris@chris-wilson.co.uk
(cherry picked from commit c601cb2135fda0b5fb9d08153b0125fcb153c7e0)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

drm/i915/gt: Move user_forcewake application to GT

We already track the debugfs user_forcewake on the GT, so it is natural
to pull the suspend/resume handling under gt/ as well.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191101141009.15581-3-chris@chris-wilson.co.uk
(cherry picked from commit 9ab3fe2d7dc39b088591b0121f041cbfd6bb1ef8)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

drm/i915/gem: Leave reloading kernel context on resume to GT

As we already do reload the kernel context in intel_gt_resume, repeating
that action inside i915_gem_resume() as well is redundant.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191101141009.15581-2-chris@chris-wilson.co.uk
(cherry picked from commit c8f6cfc56fc86999725e71a19d91269482bd2c01)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

drm/i915/gt: Call intel_gt_sanitize() directly

Assume all responsibility for operating on the HW to sanitize the GT
state upon load/resume in intel_gt_sanitize() itself.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191101141009.15581-1-chris@chris-wilson.co.uk
(cherry picked from commit 797a615357ac0feb79c9ce41f5eaac3eb738a51f)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

drm/i915: Protect request peeking with RCU

Since the execlists_active() is no longer protected by the
engine->active.lock, we need to protect the request pointer with RCU to
prevent it being freed as we evaluate whether or not we need to preempt.

Fixes: df403069029d ("drm/i915/execlists: Lift process_csb() out of the irq-off spinlock")
Fixes: 13ed13a4dcbf ("drm/i915: Don't set queue_priority_hint if we don't kick the submission")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191104090158.2959-2-chris@chris-wilson.co.uk
(cherry picked from commit 7d148635253328dda7cfe55d57e3c828e9564427)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

Merge tag 'drm-next-5.5-2019-11-01' of git://people.freedesktop.org/~agd5f/linux into drm-next

drm-next-5.5-2019-11-01:

amdgpu:
- Add EEPROM support for Arcturus
- Enable VCN encode support for Arcturus
- Misc PSP fixes
- Misc DC fixes
- swSMU cleanup

amdkfd:
- Misc cleanups
- Fix typo in cu bitmap parsing

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191101190607.3763-1-alexander.deucher@amd.com

Merge tag 'drm-intel-next-2019-11-01-1' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

UAPI Changes:

- Make context persistence optional
  Allow userspace to tie the context lifetime to FD lifetime,
  effectively allowing Ctrl-C killing of a process to also clean
  up the hardware immediately.
  Compute changes: https://github.com/intel/compute-runtime/pull/228
  The compute driver is shipping in Ubuntu. uAPI acked by Mesa folks.

- Put future HW and their uAPIs under STAGING & BROKEN
  Introduces DRM_I915_UNSTABLE Kconfig menu for working on the new
  uAPI for future HW in upstream. We already disable driver loading
  by default the platform is deemed ready. This is a second level
  of protection based on compile time switch (STAGING & BROKEN).

- Under DRM_I915_UNSTABLE: Add the fake lmem region on iGFX
  Fake local memory region on integrated GPU through cmdline:
  memmap=2G$16G i915.fake_lmem_start=0x400000000
  Currently allows testing non-mappable GGTT behavior and running
  kernel selftest for local memory.

Driver Changes:

- Fix Bugzilla #112084: VGA external monitor not working (Ville)
- Add support for half float framebuffers (Ville)
- Add perf support on TGL (Lionel)
- Replace hangcheck by heartbeats (Chris)
- Allow SPT PCH on all AML devices (James)
- Add new CNL PCH for CML platform (Imre)
- Allow 100 ms (Kconfig) for workloads to exit before reset (Chris, Jon, Joonas)
- Forcibly pre-empt a context after 100 ms (Kconfig) of delay  (Chris)
- Make timeslice duration Kconfig configurable (Chris)
- Whitelist PS_(DEPTH|INVOCATION)_COUNT for Tigerlake (Tapani)
- Support creating LMEM objects in kernel (Matt A)
- Adjust the location of RING_MI_MODE in the context image for TGL (Chris)
- Handle AUX interrupts for TC ports (Matt R)
- Add support for devices without mappable GGTT aperture (Daniele)
- Rename "inject_load_failure" module parameter to "inject_probe_failure" (Janusz)
- Handle fused off HDCP, FBC, DMC and DSC (Jose)
- Add support to one DP-MST stream on Tigerlake (Lucas)
- Add HuC firmware (and GuC) for TGL (Daniele)
- Allow ICL+ DSI on any pipe (Ville)

- Check some transcoder timing minimum limits (Ville)
- Don't set queue_priority_hint if we don't kick the submission (Chris)
- Introduce barrier pulses along engines to flush idle/in-flight requests (Chris)
- Drop assertion that ce->pin_mutex guards state updates (Chris)
- Cancel banned contexts on schedule-out (Chris)
- Cancel contexts when hangchecking is disabled (Chris)
- Catch GTT fault errors for gen11+ planes (Matt R)
- Print in debugfs if PSR is not enabled because of sink (Jose)
- Do not set MOCS control values on dgfx (Lucas)
- Setup io-mapping for LMEM (Abdiel)
- Support kernel mapping of LMEM objects (Abdiel)
- Add LMEM selftests (Matt A)
- Initialise PMU spinlock before registering (Chris)
- Clear DKL_TX_PMD_LANE_SUS before program TC voltage swing (Jose)
- Flip interpretation of ips fmin/fmax to max rps (Chris)
- Add VBT compression parameter block definition (Jani)
- Limit the blitter sizes to ensure low preemption latency (Chris)
- Fixup block_size rounding on BLT (Matt A)
- Don't try to place HWS in non-existing mappable region (Michal Wa)
- Don't allocate the ring in stolen if we lack aperture (Matt A)
- Add AUX B & C to DC_OFF_POWER_DOMAINS for Tigerlake (Matt R)
- Avoid HPD poll detect triggering a new detect cycle (Imre)
- Document the userspace fail with possible_crtcs (Ville)
- Drop lrc header page now unused by GuC (Daniele)
- Do not switch aux to TBT mode for non-TC ports (Jose)

- Restructure code to avoid depending on i915 but smaller structs (Chris, Tvrtko, Andi)
- Remove pm park/unpark notifications (Chris)
- Avoid lockdep cross-contamination between object types (Chris)
- Restructure DSC code (Jani)
- Fix dead locking in early workload shadow (Zhenyu)
- Split the legacy submission backend from the common CS ring buffer (Chris)
- Move intel_engine_context_in/out into intel_lrc.c (Tvrtko)
- Describe perf/wakeref structure members in documentation (Anna)
- Update renamed header files names in documentation (Anna)
- Add debugs to distingiush a cd2x update from a full cdclk pll update (Ville)
- Rework atomic global state locking (Ville)
- Allow planes to declare their minimum acceptable cdclk (Ville)
- Eliminate skl_check_pipe_max_pixel_rate() and simplify skl_max_scale() (Ville)
- Making loglevel of PSR2/SU logs same (Ap)
- Capture aux page table error register (Lionel)
- Add is_dgfx to device info (Jose)
- Split gen11_irq_handler to make it shareable (Lucas)
- Encapsulate kconfig constant values inside boolean predicates (Chris)
- Split memory_region initialisation into its own file (Chris)
- Use _PICK() for CHICKEN_TRANS() and add CHICKEN_TRANS_D (Ville)
- Add perf helper macros for comparing with whitelisted registers (Umesh)
- Fix i915_inject_load_error() name to read *_probe_* (Janusz)
- Drop unused AUX register offsets (Matt R)
- Provide more information on DP AUX failures (Matt R)
- Add GAM/SFC instdone to error state (Mika)
- Always track callers to intel_rps_mark_interactive() (Chris)
- Nuke 'mode' argument to intel_get_load_detect_pipe() (Ville)
- Simplify LVDS crtc_mask and pipe_mask setup (Ville)
- Stop frobbing crtc->base.mode (Ville)
- Do s/crtc_mask/pipe_mask/ (Ville)
- Split detaching and removing the vma (Chris)

- Selftest improvements (Chris, Tvrtko, Mika, Matt A, Lionel)
- GuC code improvements (Rob, Andi, Daniele)

- Check against i915_selftest only under CONFIG_SELFTEST (Chris)
- Refine occupancy test in kill_context() (Chris)
- Start kthreads before stopping (Chris)

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191101104718.GA14323@jlahtine-desk.ger.corp.intel.com

Merge tag 'drm/tegra/for-5.5-rc1' of git://anongit.freedesktop.org/tegra/linux into drm-next

drm/tegra: Changes for v5.5-rc1

The bulk of these changes is the addition of DisplayPort support for
Tegra210, Tegra186 and Tegra194. I've been running versions of this for
about three years now, so I'd consider these changes to be pretty
mature. These changes also unify the existing eDP support with the DP
support since the programming is very similar, except for a few steps
that can be easily parameterized.

The rest are a couple of fixes all over the place for minor issues, as
well as some work to support the IOMMU-backed DMA API, which in the end
turned out to also clean up a number of cases where the DMA API was not
being used correctly.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thierry Reding <thierry.reding@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191102140116.3860545-1-thierry.reding@gmail.com

Merge tag 'drm-misc-next-2019-10-31' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 5.5:

UAPI Changes:
-dma-buf: Introduce and revert dma-buf heap (Andrew/John/Sean)

Cross-subsystem Changes:
- None

Core Changes:
-dma-buf: add dynamic mapping to allow exporters to choose dma_resv lock
  state on mmap/munmap (Christian)
-vram: add prepare/cleanup fb helpers to vram helpers (Thomas)
-ttm: always keep bo's on the lru + ttm cleanups (Christian)
-sched: allow a free_job routine to sleep (Steven)
-fb_helper: remove unused drm_fb_helper_defio_init() (Thomas)

Driver Changes:
-bochs/hibmc/vboxvideo: Use new vram helpers for prepare/cleanup fb (Thomas)
-amdgpu: Implement dma-buf import/export without drm helpers (Christian)
-panfrost: Simplify devfreq integration in driver (Steven)

Cc: Christian König <christian.koenig@amd.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Steven Price <steven.price@arm.com>
Cc: Andrew F. Davis <afd@ti.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Sean Paul <sean@poorly.run>
Link: https://patchwork.freedesktop.org/patch/msgid/20191031193015.GA243509@art_vandelay

drm/i915: Update DRIVER_DATE to 20191101

Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

drm/i915/selftests: Start kthreads before stopping

An interesting observation made with our parallel selftests was that on
our small/single cpu systems we would call kthread_stop() before the
kthreads were spawned. If this happens, the kthread is never run at all;
completely bypassing the test.

A simple yield() from the parent will ensure that all children have the
opportunity to start before we reap them.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191101084940.31838-1-chris@chris-wilson.co.uk

drm/i915/lmem: Check against i915_selftest only under CONFIG_SELFTEST

The i915_selftest module parameters only exist when
CONFIG_DRM_I915_SELFTEST is set.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191101095147.9769-1-chris@chris-wilson.co.uk

drm/tegra: Unconditionally select IOMMU_IOVA

Currently configurations can be generated where IOMMU_SUPPORT is
disabled but IOMMU_IOVA is built as a module and DRM_TEGRA as built-in.
In such a case, the symbols guarded by IOMMU_IOVA will not be available
when linking the Tegra DRM driver and cause a linking failure.

Simplify this by unconditionally selecting IOMMU_IOVA, which makes sure
that it will be forced to =y if DRM_TEGRA=y. Technically we can now get
IOMMU_IOVA code built-in even if we don't use it (Tegra DRM only uses it
when IOMMU_SUPPORT is also enabled), but such configuration are of a
mostly academic nature. In all practical configurations we want IOMMU
support anyway.

Signed-off-by: Thierry Reding <treding@nvidia.com>

gpu: host1x: Unconditionally select IOMMU_IOVA

Currently configurations can be generated where IOMMU_SUPPORT is
disabled but IOMMU_IOVA is built as a module and HOST1X as built-in. In
such a case, the symbols guarded by IOMMU_IOVA will not be available
when linking the host1x driver and cause a linking failure.

Simplify this by unconditionally selecting IOMMU_IOVA, which makes sure
that it will be forced to =y if HOST1X=y. Technically we can now get
IOMMU_IOVA code built-in even if we don't use it (host1x only uses it
when IOMMU_SUPPORT is also enabled), but such configuration are of a
mostly academic nature. In all practical configurations we want IOMMU
support anyway.

Signed-off-by: Thierry Reding <treding@nvidia.com>

drm/i915/gem: Refine occupancy test in kill_context()

Don't just look at the very last request in a queue when deciding if we
need to evict the context from the GPU, as that request may still be in
the submission queue while the rest of the context is running!

Instead, walk back along the queued requests looking for the active
request and checking that.

Fixes: 2e0986a58cc4 ("drm/i915/gem: Cancel contexts when hangchecking is disabled")
Testcase: igt/gem_ctx_persistence/queued
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191031090104.22245-1-chris@chris-wilson.co.uk

drm/i915: Update DRIVER_DATE to 20191101

Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>

drm/i915/lmem: add the fake lmem region

Intended for upstream testing so that we can still exercise the LMEM
plumbing and !i915_ggtt_has_aperture paths. Smoke tested on Skull Canyon
device. This works by allocating an intel_memory_region for a reserved
portion of system memory, which we treat like LMEM. For the LMEMBAR we
steal the aperture and 1:1 it map to the stolen region.

To enable simply set the i915 modparam fake_lmem_start= on the kernel
cmdline with the start of reserved region(see memmap=). The size of the
region we can use is determined by the size of the mappable aperture, so
the size of reserved region should be >= mappable_end. For now we only
enable for the selftests. Depends on CONFIG_DRM_I915_UNSTABLE being
enabled.

eg. memmap=2G$16G i915.fake_lmem_start=0x400000000

v2: make fake_lmem_start an i915 modparam

Signed-off-by: Matthew Auld <matthew.auld@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Abdiel Janulgue <abdiel.janulgue@linux.intel.com>
Cc: Arkadiusz Hiler <arkadiusz.hiler@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20191030173320.8850-1-matthew.auld@intel.com

drm/i915/dp: Do not switch aux to TBT mode for non-TC ports

Non-TC ports always have tc_mode == TC_PORT_TBT_ALT so it was
switching aux to TBT mode for all combo-phy ports, happily this did
not caused any issue but is better follow BSpec.
Also this is reserved bit before ICL.

Cc: Imre Deak <imre.deak@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Fixes: e9b7e1422d40 ("drm/i915: Sanitize the terminology used for TypeC port modes")
Reviewed-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191029011014.286885-1-jose.souza@intel.com

drm/i915/guc: drop guc shared area

Recent GuC doesn't require the shared area. We still have one user in
i915 (engine reset via guc) because we haven't updated the command to
match the current guc submission flow [1]. Since the flow in guc is
about to change again, just disable the command for now and add a note
that we'll implement it as part of the new flow.

[1] https://patchwork.freedesktop.org/patch/295038/

Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: John Harrison <John.C.Harrison@Intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Fernando Pacheco <fernando.pacheco@intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20191031013040.25803-2-daniele.ceraolospurio@intel.com

drm/i915: drop lrc header page

Recent GuC binaries (including all the ones we're currently using)
don't require this shared area anymore, having moved the relevant
entries into the stage pool instead. i915 itself doesn't write
anything into it either, so we can safely drop it.

Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: John Harrison <John.C.Harrison@Intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20191031013040.25803-1-daniele.ceraolospurio@intel.com

drm/i915: Split detaching and removing the vma

In order to keep the assert_bind_count() valid, we need to hold the vma
page reference until after we drop the bind count. However, we must also
keep the drm_mm_remove_node() as the last action of i915_vma_unbind() so
that it serialises with the unlocked check inside i915_vma_destroy(). So
we need to split up i915_vma_remove() so that we order the detach, drop
pages and remove as required during unbind.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=112067
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191030192159.18404-1-chris@chris-wilson.co.uk

drm/i915/selftests: Pretty print the i915_active

If the idle_pulse fails to flush the i915_active, dump the tree to see
if that has any clues.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191031101116.19894-1-chris@chris-wilson.co.uk

drm/i915/selftests: Assert that the idle_pulse is sent

When checking the heartbeat pulse, we expect it to have been sent by the
time we have slept. We can verify this by checking the engine serial
number to see if that matches the predicted pulse serial. It will always
be true if, and only if, the pulse was sent by itself (as designed by
the test).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191031094259.23028-1-chris@chris-wilson.co.uk

drm/i915/mst: Document the userspace fail with possible_crtcs

To avoid accidentally breaking things in the future add a
comment explaining why we misconfigure the pipe_mask.

Also toss in a TODO for investigating a single encoder
approach as opposed to the encoder-per-pipe approach.

v2: Drop a bogus TODO comment

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191002162505.30716-6-ville.syrjala@linux.intel.com
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>

drm/i915: Simplify pipe_mask setup even further

Just set pipe_mask=~0 for the non-special cases where any pipe
will do. intel_encoder_possible_crtcs() will anyway drop out
anything that doesn't exist.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191002162505.30716-5-ville.syrjala@linux.intel.com
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>

drm/i915: Allow ICL+ DSI on any pipe

There are no longer any pipe<->DSI port limitations on icl+.
Populate the pipe_mask accordingly.

Cc: José Roberto de Souza <jose.souza@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191002162505.30716-4-ville.syrjala@linux.intel.com
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>

drm/i915: s/crtc_mask/pipe_mask/

Rename the encoder->crtc_mask to encoder->pipe_mask to better
reflect what it actually contains.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191002162505.30716-3-ville.syrjala@linux.intel.com
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>

drm/i915: Simplify LVDS crtc_mask setup

We don't need to special case PCH vs. gen4 when setting up the LVDS
crtc_mask. Just claim pipes A|B|C work and
intel_encoder_possible_crtcs() will drop out any crtc that doesn't
exist.

v2: Put the special case first to match what most other encoders do

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191002162505.30716-2-ville.syrjala@linux.intel.com
Reviewed-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>

drm/i915/uc: define GuC and HuC binaries for TGL

GuC 35.2.0 and HuC 7.0.3 are the first production releases for TGL.
GuC 35.2 for Gen12 is interface-compatible with 33.0 on older Gens,
because the differences are related to additional blocks/commands in
the interface to support new Gen12 features. These parts of the
interface will be added when the relevant features are enabled.

v2: fix typos (Michal)

Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Michal Wajdeczko <michal.wajdeczko@intel.com>
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191026003507.21769-1-daniele.ceraolospurio@intel.com

Revert "dma-buf: Add dma-buf heaps framework"

This reverts commit a69b0e855d3fd278ff6f09a23e1edf929538e304.

This patchset doesn't meet the UAPI requirements set out in [1] for the DRM
subsystem. Once the userspace component is reviewed and ready for merge
we can try again.

[1]- https://01.org/linuxgraphics/gfx-docs/drm/gpu/drm-uapi.html#open-source-userspace-requirements

Fixes: a69b0e855d3f ("dma-buf: Add dma-buf heaps framework")
Cc: Laura Abbott <labbott@redhat.com>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Liam Mark <lmark@codeaurora.org>
Cc: Pratik Patel <pratikp@codeaurora.org>
Cc: Brian Starkey <Brian.Starkey@arm.com>
Cc: Vincent Donnefort <Vincent.Donnefort@arm.com>
Cc: Sudipto Paul <Sudipto.Paul@arm.com>
Cc: Andrew F. Davis <afd@ti.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Chenbo Feng <fengc@google.com>
Cc: Alistair Strachan <astrachan@google.com>
Cc: Hridya Valsaraju <hridya@google.com>
Cc: Hillf Danton <hdanton@sina.com>
Cc: dri-devel@lists.freedesktop.org
Cc: Brian Starkey <brian.starkey@arm.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: "Paul E. McKenney" <paulmck@linux.ibm.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: "Andrew F. Davis" <afd@ti.com>
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Acked-by: David Airlie <airlied@linux.ie>
Signed-off-by: Sean Paul <sean@poorly.run>
Link: https://patchwork.freedesktop.org/patch/msgid/20191030203003.101156-6-sean@poorly.run

Revert "dma-buf: heaps: Add heap helpers"

This reverts commit 7b87ea704fd9606eaafa9150116536d72f5c4b1f.

This patchset doesn't meet the UAPI requirements set out in [1] for the DRM
subsystem. Once the userspace component is reviewed and ready for merge
we can try again.

[1]- https://01.org/linuxgraphics/gfx-docs/drm/gpu/drm-uapi.html#open-source-userspace-requirements

Fixes: 7b87ea704fd9 ("dma-buf: heaps: Add heap helpers")
Cc: Laura Abbott <labbott@redhat.com>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Liam Mark <lmark@codeaurora.org>
Cc: Pratik Patel <pratikp@codeaurora.org>
Cc: Brian Starkey <Brian.Starkey@arm.com>
Cc: Vincent Donnefort <Vincent.Donnefort@arm.com>
Cc: Sudipto Paul <Sudipto.Paul@arm.com>
Cc: Andrew F. Davis <afd@ti.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Chenbo Feng <fengc@google.com>
Cc: Alistair Strachan <astrachan@google.com>
Cc: Hridya Valsaraju <hridya@google.com>
Cc: Hillf Danton <hdanton@sina.com>
Cc: dri-devel@lists.freedesktop.org
Cc: Brian Starkey <brian.starkey@arm.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: "Andrew F. Davis" <afd@ti.com>
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Acked-by: David Airlie <airlied@linux.ie>
Signed-off-by: Sean Paul <sean@poorly.run>
Link: https://patchwork.freedesktop.org/patch/msgid/20191030203003.101156-5-sean@poorly.run

Revert "dma-buf: heaps: Add system heap to dmabuf heaps"

This reverts commit 47a32f9c12266d450b92089148c6039591bd9909.

This patchset doesn't meet the UAPI requirements set out in [1] for the DRM
subsystem. Once the userspace component is reviewed and ready for merge
we can try again.

[1]- https://01.org/linuxgraphics/gfx-docs/drm/gpu/drm-uapi.html#open-source-userspace-requirements

Fixes: 47a32f9c1226 ("dma-buf: heaps: Add system heap to dmabuf heaps")
Cc: Laura Abbott <labbott@redhat.com>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Liam Mark <lmark@codeaurora.org>
Cc: Pratik Patel <pratikp@codeaurora.org>
Cc: Brian Starkey <Brian.Starkey@arm.com>
Cc: Vincent Donnefort <Vincent.Donnefort@arm.com>
Cc: Sudipto Paul <Sudipto.Paul@arm.com>
Cc: Andrew F. Davis <afd@ti.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Chenbo Feng <fengc@google.com>
Cc: Alistair Strachan <astrachan@google.com>
Cc: Hridya Valsaraju <hridya@google.com>
Cc: Hillf Danton <hdanton@sina.com>
Cc: dri-devel@lists.freedesktop.org
Cc: Brian Starkey <brian.starkey@arm.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: "Andrew F. Davis" <afd@ti.com>
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Acked-by: David Airlie <airlied@linux.ie>
Signed-off-by: Sean Paul <sean@poorly.run>
Link: https://patchwork.freedesktop.org/patch/msgid/20191030203003.101156-4-sean@poorly.run

Revert "dma-buf: heaps: Add CMA heap to dmabuf heaps"

This reverts commit 43d7238fb9ac897b29912368b3359e72bae469c4.

This patchset doesn't meet the UAPI requirements set out in [1] for the DRM
subsystem. Once the userspace component is reviewed and ready for merge
we can try again.

[1]- https://01.org/linuxgraphics/gfx-docs/drm/gpu/drm-uapi.html#open-source-userspace-requirements

Fixes: 43d7238fb9ac ("dma-buf: heaps: Add CMA heap to dmabuf heaps")
Cc: Laura Abbott <labbott@redhat.com>
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Liam Mark <lmark@codeaurora.org>
Cc: Pratik Patel <pratikp@codeaurora.org>
Cc: Brian Starkey <Brian.Starkey@arm.com>
Cc: Vincent Donnefort <Vincent.Donnefort@arm.com>
Cc: Sudipto Paul <Sudipto.Paul@arm.com>
Cc: Andrew F. Davis <afd@ti.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Chenbo Feng <fengc@google.com>
Cc: Alistair Strachan <astrachan@google.com>
Cc: Hridya Valsaraju <hridya@google.com>
Cc: Hillf Danton <hdanton@sina.com>
Cc: dri-devel@lists.freedesktop.org
Cc: Brian Starkey <brian.starkey@arm.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: "Andrew F. Davis" <afd@ti.com>
Cc: linux-media@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Acked-by: David Airlie <airlied@linux.ie>
Signed-off-by: Sean Paul <sean@poorly.run>
Link: https://patchwork.freedesktop.org/patch/msgid/20191030203003.101156-3-sean@poorly.run

Revert "kselftests: Add dma-heap test"

This reverts commit ab87cc9754cdeb373c8ac030ac7aed92f450b767.

This patchset doesn't meet the UAPI requirements set out in [1] for the DRM
subsystem. Once the userspace component is reviewed and ready for merge
we can try again.

[1]- https://01.org/linuxgraphics/gfx-docs/drm/gpu/drm-uapi.html#open-source-userspace-requirements

Fixes: ab87cc9754cd ("kselftests: Add dma-heap test")
Cc: Benjamin Gaignard <benjamin.gaignard@linaro.org>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Liam Mark <lmark@codeaurora.org>
Cc: Pratik Patel <pratikp@codeaurora.org>
Cc: Brian Starkey <Brian.Starkey@arm.com>
Cc: Vincent Donnefort <Vincent.Donnefort@arm.com>
Cc: Sudipto Paul <Sudipto.Paul@arm.com>
Cc: Andrew F. Davis <afd@ti.com>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Chenbo Feng <fengc@google.com>
Cc: Alistair Strachan <astrachan@google.com>
Cc: Hridya Valsaraju <hridya@google.com>
Cc: Hillf Danton <hdanton@sina.com>
Cc: dri-devel@lists.freedesktop.org
Cc: Brian Starkey <brian.starkey@arm.com>
Cc: Laura Abbott <labbott@redhat.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Sean Paul <seanpaul@chromium.org>
Acked-by: David Airlie <airlied@linux.ie>
Signed-off-by: Sean Paul <sean@poorly.run>
Link: https://patchwork.freedesktop.org/patch/msgid/20191030203003.101156-2-sean@poorly.run

drm/i915: Stop frobbing crtc->base.mode

The core no longer uses drm_crtc_state::mode with atomic drivers,
so let's stop frobbing it in the driver. For the user mode readout
we'll just use an on stack mode.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191029145526.10308-1-ville.syrjala@linux.intel.com
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>

drm/i915: Nuke 'mode' argument to intel_get_load_detect_pipe()

We always pass mode==NULL to intel_get_load_detect_pipe(). Remove
the pointless function argument.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191029132323.18113-1-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>

drm/amd/display: Add a conversion function for transmitter and phy_id enums

Clang warns:

../drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link.c:2520:42:
error: implicit conversion from enumeration type 'enum transmitter' to
different enumeration type 'enum physical_phy_id'
[-Werror,-Wenum-conversion]
        psr_context->smuPhyId = link->link_enc->transmitter;
                              ~ ~~~~~~~~~~~~~~~~^~~~~~~~~~~
1 error generated.

As the comment above this assignment states, this is intentional. To
match previous warnings of this nature, add a conversion function that
explicitly converts between the enums and warns when there is a
mismatch.

See commit 828cfa29093f ("drm/amdgpu: Fix amdgpu ras to ta enums
conversion") and commit d9ec5cfd5a2e ("drm/amd/display: Use switch table
for dc_to_smu_clock_type") for previous examples of this.

v2: use PHYLD_UNKNOWN for the default case.

Fixes: e0d08a40a63b ("drm/amd/display: Add debugfs entry for reading psr state")
Link: https://github.com/ClangBuiltLinux/linux/issues/758
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drm/amd/display: remove redundant null pointer check before kfree

kfree has taken null pointer into account. hence it is safe to remove
the unnecessary check.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drm/amdgpu/gmc10: properly set BANK_SELECT and FRAGMENT_SIZE

These were not aligned for optimal performance for GPUVM.

Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Tianci Yin <tianci.yin@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drm/amdgpu: fix no ACK from LDS read during stress test for Arcturus

Set mmSQ_CONFIG.DISABLE_SMEM_SOFT_CLAUSE as W/R.

Signed-off-by: Le Ma <le.ma@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drm/amdgpu: fix gfx VF FLR test fail on navi

Cp wptr in wb buffer is outdated after VF FLR.
The outdated wptr may cause cp to execute unexpected packets.
Reset cp wptr in wb buffer.

Signed-off-by: HaiJun Chang <HaiJun.Chang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drm/amdgpu: bypass some cleanup work after err_event_athub (v2)

PSP lost connection when err_event_athub occurs. These cleanup work can be
skipped in BACO reset.

v2: squash in missing include (Alex)

Signed-off-by: Le Ma <le.ma@amd.com>
Reviewed-by: Hawking Zhang <hawking.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drm/amdgpu: clear UVD VCPU buffer when err_event_athub generated

The err_event_athub error will mess up the buffer and cause UVD resume hang.

Signed-off-by: Le Ma <le.ma@amd.com>
Reviewed-by: Hawking Zhang <hawking.zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drm/amdgpu/SRIOV: SRIOV VF doesn't support BACO

SRIOV VF doesn't support BACO.

Only PF with BACO capability can do it.

Signed-off-by: Jiange Zhao <Jiange.Zhao@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drm/amdgpu: Remove superfluous void * cast in debugfs_create_file() call

There is no need to cast a typed pointer to a void pointer when calling
a function that accepts the latter.  Remove it, as the cast prevents
further compiler checks.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drm/amdgpu: remove set but not used variable 'adev'

drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:1221:24: warning: variable adev set but not used [-Wunused-but-set-variable]
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:488:24: warning: variable adev set but not used [-Wunused-but-set-variable]
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:547:24: warning: variable adev set but not used [-Wunused-but-set-variable]

It is never used, so can removed it.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drm/amdkfd: bug fix for out of bounds mem on gpu cache filling info

The bitmap in cu_info structure is defined as a 4x4 size array. In
Acturus, this matrix is initialized as a 4x2. Based on the 8 shaders.
In the gpu cache filling initialization, the access to the bitmap matrix
was done as an 8x1 instead of 4x2. Causing an out of bounds memory
access error.
Due to this, the number of GPU cache entries was inconsistent.

Signed-off-by: Alex Sierra <alex.sierra@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drm/amdkfd: Delete duplicated queue bit map reservation

The KIQ is on the second MEC and its reservation is covered in the
latter logic, so no need to reserve its bit twice.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drm/amdkfd: Delete unnecessary pr_fmt switch

Given amdkfd.ko has been merged into amdgpu.ko, this switch is no
longer useful.

Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drm/i915: Avoid HPD poll detect triggering a new detect cycle

For the HPD interrupt functionality the HW depends on power wells in the
display core domain to be on. Accordingly when enabling these power
wells the HPD polling logic will force an HPD detection cycle to account
for hotplug events that may have happened when such a power well was
off.

Thus a detect cycle started by polling could start a new detect cycle if
a power well in the display core domain gets enabled during detect and
stays enabled after detect completes. That in turn can lead to a
detection cycle runaway.

To prevent re-triggering a poll-detect cycle make sure we drop all power
references we acquired during detect synchronously by the end of detect.
This will let the poll-detect logic continue with polling (matching the
off state of the corresponding power wells) instead of scheduling a new
detection cycle.

Fixes: 6cfe7ec02e85 ("drm/i915: Remove the unneeded AUX power ref from intel_dp_detect()")
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=112125
Reported-and-tested-by: Val Kulkov <val.kulkov@gmail.com>
Reported-and-tested-by: wangqr <wqr.prg@gmail.com>
Cc: Val Kulkov <val.kulkov@gmail.com>
Cc: wangqr <wqr.prg@gmail.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191028181517.22602-1-imre.deak@intel.com

drm/i915/gt: Always track callers to intel_rps_mark_interactive()

During startup, we may find ourselves in an interesting position where
we haven't fully enabled RPS before the display starts trying to use it.
This may lead to an imbalance in our "interactive" counter:

<3>[    4.813326] intel_rps_mark_interactive:652 GEM_BUG_ON(!rps->power.interactive)
<4>[    4.813396] ------------[ cut here ]------------
<2>[    4.813398] kernel BUG at drivers/gpu/drm/i915/gt/intel_rps.c:652!
<4>[    4.813430] invalid opcode: 0000 [#1] PREEMPT SMP PTI
<4>[    4.813438] CPU: 1 PID: 18 Comm: kworker/1:0H Not tainted 5.4.0-rc5-CI-CI_DRM_7209+ #1
<4>[    4.813447] Hardware name:  /NUC7i5BNB, BIOS BNKBL357.86A.0054.2017.1025.1822 10/25/2017
<4>[    4.813525] Workqueue: events_highpri intel_atomic_cleanup_work [i915]
<4>[    4.813589] RIP: 0010:intel_rps_mark_interactive+0xb3/0xc0 [i915]
<4>[    4.813597] Code: bc 3f de e0 48 8b 35 84 2e 24 00 49 c7 c0 f3 d4 4e a0 b9 8c 02 00 00 48 c7 c2 80 9c 48 a0 48 c7 c7 3e 73 34 a0 e8 8d 3b e5 e0 <0f> 0b 90 66 2e 0f 1f 84 00 00 00 00 00 80 bf c0 00 00 00 00 74 32
<4>[    4.813616] RSP: 0018:ffffc900000efe00 EFLAGS: 00010286
<4>[    4.813623] RAX: 000000000000000e RBX: ffff8882583cc7f0 RCX: 0000000000000000
<4>[    4.813631] RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff888275969c00
<4>[    4.813639] RBP: 0000000000000000 R08: 0000000000000008 R09: ffff888275ace000
<4>[    4.813646] R10: ffffc900000efe00 R11: ffff888275969c00 R12: ffff8882583cc8d8
<4>[    4.813654] R13: ffff888276abce00 R14: 0000000000000000 R15: ffff88825e878860
<4>[    4.813662] FS:  0000000000000000(0000) GS:ffff888276a80000(0000) knlGS:0000000000000000
<4>[    4.813672] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<4>[    4.813678] CR2: 00007f051d5ca0a8 CR3: 0000000262f48001 CR4: 00000000003606e0
<4>[    4.813686] Call Trace:
<4>[    4.813755]  intel_cleanup_plane_fb+0x4e/0x60 [i915]
<4>[    4.813764]  drm_atomic_helper_cleanup_planes+0x4d/0x70
<4>[    4.813833]  intel_atomic_cleanup_work+0x15/0x80 [i915]
<4>[    4.813842]  process_one_work+0x26a/0x620
<4>[    4.813850]  worker_thread+0x37/0x380
<4>[    4.813857]  ? process_one_work+0x620/0x620
<4>[    4.813864]  kthread+0x119/0x130
<4>[    4.813870]  ? kthread_park+0x80/0x80
<4>[    4.813878]  ret_from_fork+0x3a/0x50
<4>[    4.813887] Modules linked in: i915(+) mei_hdcp x86_pkg_temp_thermal coretemp crct10dif_pclmul crc32_pclmul btusb btrtl btbcm btintel snd_hda_intel snd_intel_nhlt snd_hda_codec bluetooth snd_hwdep snd_hda_core ghash_clmulni_intel snd_pcm e1000e ecdh_generic ecc ptp pps_core mei_me mei prime_numbers
<4>[    4.813934] ---[ end trace c13289af88174ffc ]---

The solution employed is to not worry about RPS state and keep the tally
of the interactive counter separate. When we do enable RPS, we will then
take the display activity into account.

Fixes: 3e7abf814193 ("drm/i915: Extract GT render power state management")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Andi Shyti <andi.shyti@intel.com>
Acked-by: Andi Shyti <andi.shyti@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191030103827.2413-1-chris@chris-wilson.co.uk

drm/i915/tgl: Add gam instdone

This has been asked from us already. Prepare for the next
time.

Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20191029163841.5224-2-mika.kuoppala@linux.intel.com

drm/i915/tgl: Add SFC instdone to error state

On debugging media workload hangs, sfc instdone
might prove useful in future. Be prepared.

Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20191029163841.5224-1-mika.kuoppala@linux.intel.com

drm/i915/tgl: add support to one DP-MST stream

This is the minimum change to support 1 (and only 1) DP-MST monitor
connected on Tiger Lake. This change was isolated from previous patch
from José. In order to support more streams we will need to create a
master-slave relation on the transcoders and that is not currently
working yet.

v2: remove unused macro and use REG_FIELD_PREP() (Ville)

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191029035049.5907-1-lucas.demarchi@intel.com

Merge tag 'topic/mst-suspend-resume-reprobe-2019-10-29-2' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

UAPI Changes:

Cross-subsystem Changes:

Core Changes:
* Handle UP requests asynchronously in the DP MST helpers, fixing
  hotplug notifications and allowing us to implement suspend/resume
  reprobing
* Add basic suspend/resume reprobing to the DP MST helpers
* Improve locking for link address reprobing and connection status
  request handling in the DP MST helpers
* Miscellaneous refactoring in the DP MST helpers
* Add a Kconfig option to the DP MST helpers to enable tracking of
  gets/puts for topology references for debugging purposes

Driver Changes:
* nouveau: Resume hotplug interrupts earlier, so that sideband
  messages may be transmitted during resume and thus allow
  suspend/resume reprobing for DP MST to work
* nouveau: Avoid grabbing runtime PM references when handling short DP
  pulses, so that handling sideband messages in resume codepaths with the
  DP MST helpers doesn't deadlock us
* i915, nouveau, amdgpu, radeon: Use detect_ctx for probing MST
  connectors, so that we can grab the topology manager's atomic lock

Note: there's some amdgpu patches that I didn't realize were pushed
upstream already when creating this topic branch. When they fail to
apply, you can just ignore and skip them.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Lyude Paul <lyude@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/a74c6446bc960190d195a751cb6d8a00a98f3974.camel@redhat.com

drm/i915/gem: Make context persistence optional

Our existing behaviour is to allow contexts and their GPU requests to
persist past the point of closure until the requests are complete. This
allows clients to operate in a 'fire-and-forget' manner where they can
setup a rendering pipeline and hand it over to the display server and
immediately exit. As the rendering pipeline is kept alive until
completion, the display server (or other consumer) can use the results
in the future and present them to the user.

The compute model is a little different. They have little to no buffer
sharing between processes as their kernels tend to operate on a
continuous stream, feeding the results back to the client application.
These kernels operate for an indeterminate length of time, with many
clients wishing that the kernel was always running for as long as they
keep feeding in the data, i.e. acting like a DSP.

Not all clients want this persistent "desktop" behaviour and would prefer
that the contexts are cleaned up immediately upon closure. This ensures
that when clients are run without hangchecking (e.g. for compute kernels
of indeterminate runtime), any GPU hang or other unexpected workloads
are terminated with the process and does not continue to hog resources.

The default behaviour for new contexts is the legacy persistence mode,
as some desktop applications are dependent upon the existing behaviour.
New clients will have to opt in to immediate cleanup on context
closure. If the hangchecking modparam is disabled, so is persistent
context support -- all contexts will be terminated on closure.

We expect this behaviour change to be welcomed by compute users, who
have often been caught between a rock and a hard place. They disable
hangchecking to avoid their kernels being "unfairly" declared hung, but
have also experienced true hangs that the system was then unable to
clean up. Naturally, this leads to bug reports.

Testcase: igt/gem_ctx_persistence
Link: https://github.com/intel/compute-runtime/pull/228
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Cc: Jon Bloomfield <jon.bloomfield@intel.com>
Reviewed-by: Jon Bloomfield <jon.bloomfield@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20191029202338.8841-1-chris@chris-wilson.co.uk

Merge tag 'exynos-drm-next-for-v5.5' of git://git./linux/kernel/git/daeinki/drm-exynos into drm-next

Fix a build warning at mixer driver
- it fixes a build warning message, 'static' is not at beginning
  of declaration [-Wold-style-declaration], by moving static keyword.

Signed-off-by: Dave Airlie <airlied@redhat.com>
# gpg: Signature made Mon 28 Oct 2019 10:31:25 PM AEST
# gpg:                using RSA key 020570887DBBB9A5
# gpg: Can't check signature: public key not found
From: Inki Dae <daeinki@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191028123434.30034-1-daeinki@gmail.com

Merge tag 'drm-misc-next-2019-10-24-2' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 5.5:

UAPI Changes:
-syncobj: allow querying the last submitted timeline value (David)
-fourcc: explicitly defineDRM_FORMAT_BIG_ENDIAN as unsigned (Adam)
-omap: revert the OMAP_BO_* flags that were added -- no userspace (Sean)

Cross-subsystem Changes:
-MAINTAINERS: add Mihail as komeda co-maintainer (Mihail)

Core Changes:
-edid: a few cleanups, add AVI infoframe bar info (Ville)
-todo: remove i915 device_link item and add difficulty levels (Daniel)
-dp_helpers: add a few new helpers to parse dpcd (Thierry)

Driver Changes:
-gma500: fix a few memory disclosure leaks (Kangjie)
-qxl: convert to use the new drm_gem_object_funcs.mmap (Gerd)
-various: open code dp_link helpers in preparation for helper removal (Thierry)

Cc: Chunming Zhou <david1.zhou@amd.com>
Cc: Adam Jackson <ajax@redhat.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Kangjie Lu <kjlu@umn.edu>
Cc: Mihail Atanassov <mihail.atanassov@arm.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Thierry Reding <treding@nvidia.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Sean Paul <sean@poorly.run>
Link: https://patchwork.freedesktop.org/patch/msgid/20191024155535.GA10294@art_vandelay

drm/i915: Provide more information on DP AUX failures

We're seeing some failures where an aux transaction still shows as
'busy' well after the timeout limit that the hardware is supposed to
enforce.  Improve the error message so that we can see exactly which aux
channel this error happened on and what the status bits were during this
case that isn't supposed to happen.

v2:
 - Make timeout a const variable so that the timeout & message will
   match if we decide to change it in the future.  (Lucas)
 - Don't bother testing intel_dp->aux.name for NULL.  (Lucas)

Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191029173102.9451-1-matthew.d.roper@intel.com
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>

Merge tag 'drm-next-5.5-2019-10-25' of git://people.freedesktop.org/~agd5f/linux into drm-next

drm-next-5.5-2019-10-25:

amdgpu:
- BACO support for CI and VI asics
- Quick memory training support for navi
- MSI-X support
- RAS fixes
- Display AVI infoframe fixes
- Display ref clock fixes for renoir
- Fix number of audio endpoints in renoir
- Fix for discovery tables
- Powerplay fixes
- Documentation fixes
- Misc cleanups

radeon:
- revert a PPC fix which broke x86

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191025221020.203546-1-alexander.deucher@amd.com

drm/i915/display/cnl+: Handle fused off DSC

DSC could be fused off, so not all GEN10+ platforms will support it.

Cc: Manasi Navare <manasi.d.navare@intel.com>
Cc: Martin Peres <martin.peres@linux.intel.com>
Reviewed-by: Ramalingam C <ramalingam.c@intel.com>
Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191026001323.216052-5-jose.souza@intel.com

drm/i915/display/icl+: Check if DMC is fused off

Check if DMC is fused off and handle it.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Martin Peres <martin.peres@linux.intel.com>
Reviewed-by: Ramalingam C <ramalingam.c@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191026001323.216052-4-jose.souza@intel.com

drm/i915/display: Check if FBC is fused off

Check if FBC is fused off and handle it.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Martin Peres <martin.peres@linux.intel.com>
Reviewed-by: Ramalingam C <ramalingam.c@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191026001323.216052-3-jose.souza@intel.com

drm/i915/display: Handle fused off HDCP

HDCP could be fused off, so not all GEN9+ platforms will support it.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Martin Peres <martin.peres@linux.intel.com>
Reviewed-by: Ramalingam C <ramalingam.c@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191026001323.216052-2-jose.souza@intel.com

drm/i915: Add two spaces before the SKL_DFSM registers

The next patches are going to touch this registers so here already
fixing it for older registers and make it consistent with most of
the other registers in this file.

Cc: Ramalingam C <ramalingam.c@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191026001323.216052-1-jose.souza@intel.com

drm/i915/perf: ensure selftests select valid format

Gen12 only support a single report format :
I915_OA_FORMAT_A32u40_A4u32_B8_C8

Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Fixes: 00a7f0d7155c ("drm/i915/tgl: Add perf support on TGL")
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20191029142826.20014-1-lionel.g.landwerlin@intel.com

drm/gem: Fix mmap fake offset handling for drm_gem_object_funcs.mmap

Commit c40069cb7bd6 ("drm: add mmap() to drm_gem_object_funcs")
introduced a GEM object mmap() hook which is expected to subtract the
fake offset from vm_pgoff. However, for mmap() on dmabufs, there is not
a fake offset.

To fix this, let's always call mmap() object callback with an offset of 0,
and leave it up to drm_gem_mmap_obj() to remove the fake offset.

TTM still needs the fake offset, so we have to add it back until that's
fixed.

Fixes: c40069cb7bd6 ("drm: add mmap() to drm_gem_object_funcs")
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20191024191859.31700-1-robh@kernel.org

drm/panfrost: Simplify devfreq utilisation tracking

Instead of tracking per-slot utilisation track a single value for the
entire GPU. Ultimately it doesn't matter if the GPU is busy with only
vertex or a combination of vertex and fragment processing - if it's busy
then it's busy and devfreq should be scaling appropriately.

This also makes way for being able to submit multiple jobs per slot
which requires more values than the original boolean per slot.

Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191025134143.14324-3-steven.price@arm.com

drm/panfrost: Use generic code for devfreq

Use dev_pm_opp_set_rate() instead of open coding the devfreq
integration, simplifying the code.

Reviewed-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Acked-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20191025134143.14324-2-steven.price@arm.com

drm/i915/tgl: Add AUX B & C to DC_OFF_POWER_DOMAINS

Our TGL CI platforms are running into cases where aux transactions have
failed to complete or declare a timeout well after the timeout limit
that the hardware is supposed to enforce.  From the logs it appears that
these failures arise when aux transactions happen after we've entered
DC6:

  <7> [622.523650] [drm:skl_enable_dc6 [i915]] Enabling DC6
  <7> [622.523685] [drm:gen9_set_dc_state [i915]] Setting DC state from 00 to 02
  ...
  <3> [622.535753] [drm:intel_dp_aux_xfer [i915]] *ERROR* dp aux hw did not signal timeout!
  <3> [622.547745] [drm:intel_dp_aux_xfer [i915]] *ERROR* dp aux hw did not signal timeout!
  <3> [622.559746] [drm:intel_dp_aux_xfer [i915]] *ERROR* dp aux hw did not signal timeout!
  <3> [622.571744] [drm:intel_dp_aux_xfer [i915]] *ERROR* dp aux hw did not signal timeout!
  <3> [622.583743] [drm:intel_dp_aux_xfer [i915]] *ERROR* dp aux hw did not signal timeout!
  <3> [622.583780] [drm:intel_dp_aux_xfer [i915]] *ERROR* dp_aux_ch not done status 0xad400bff
  <7> [622.863725] [drm:drm_dp_dpcd_access] Too many retries, giving up. First error: -110

On TGL AUX B & C are in PG1 (managed by the DMC firmware) rather
than PG3 as they were on ICL, so allowing DC6 means the DMC firmware
might shut off the power wells behind our backs when we're trying to use
them.

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191025230623.27829-6-matthew.d.roper@intel.com
Reviewed-by: Imre Deak <imre.deak@intel.com>

drm/i915: Drop unused AUX register offsets

We reference DP AUX registers via the DP_AUX_CH_CTL() and
DP_AUX_CH_DATA() macros that calculate all the register offsets for us
automatically; there's no need to explicitly define every offset in
i915_reg.h if they're never going to be used by the driver code.

v2: Apparently GVT was directly using these raw definitions in a couple
    places.  Switch GVT code over to using our preferred macros.

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com> #v1
Link: https://patchwork.freedesktop.org/patch/msgid/20191026051226.30807-1-matthew.d.roper@intel.com

drm/i915/gt: Make timeslice duration configurable

Execlists uses a scheduling quantum (a timeslice) to alternate execution
between ready-to-run contexts of equal priority. This ensures that all
users (though only if they of equal importance) have the opportunity to
run and prevents livelocks where contexts may have implicit ordering due
to userspace semaphores. However, not all workloads necessarily benefit
from timeslicing and in the extreme some sysadmin may want to disable or
reduce the timeslicing granularity.

The timeslicing mechanism can be compiled out^W^W disabled (but should
DCE!) with

./scripts/config --set-val DRM_I915_TIMESLICE_DURATION 0

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191029091632.26281-1-chris@chris-wilson.co.uk

drm/i915: Rename "inject_load_failure" module parameter

Commit f2db53f14d3d ("drm/i915: Replace "_load" with "_probe"
consequently") deliberately left the name of the module parameter
unchanged as that would require a corresponding change on IGT size.
Now as the IGT side change has been submitted, complete the switch to
the "probe" nomenclature.

Suggested-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Cc: Michał Wajdeczko <michal.wajdeczko@intel.com>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Cc: Piotr Piórkowski <piotr.piorkowski@intel.com>
Cc: Tomasz Lis <tomasz.lis@intel.com>
Cc: 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>
Link: https://patchwork.freedesktop.org/patch/msgid/20191029102036.6326-3-janusz.krzysztofik@linux.intel.com

drm/i915: Fix i915_inject_load_error() name to read *_probe_*

Commit 50d84418f586 ("drm/i915: Add i915 to i915_inject_probe_failure")
introduced new functions unfortunately named incompatibly with rules
established by commit f2db53f14d3d ("drm/i915: Replace "_load" with
"_probe" consequently").  Fix it for consistency.

Suggested-by: Michał Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Cc: Michał Wajdeczko <michal.wajdeczko@intel.com>
Cc: Michał Winiarski <michal.winiarski@intel.com>
Cc: Piotr Piórkowski <piotr.piorkowski@intel.com>
Cc: Tomasz Lis <tomasz.lis@intel.com>
Cc: 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>
Link: https://patchwork.freedesktop.org/patch/msgid/20191029102036.6326-2-janusz.krzysztofik@linux.intel.com

drm/tegra: Optionally attach clients to the IOMMU

If a client is already attached to an IOMMU domain that is not the
shared domain, don't try to attach it again. This allows using the
IOMMU-backed DMA API.

Since the IOMMU-backed DMA API is now supported and there's no way
to detach from it on 64-bit ARM, don't bother to detach from it on
32-bit ARM either.

Signed-off-by: Thierry Reding <treding@nvidia.com>

drm/tegra: Support DMA API for display controllers

If a display controller is not attached to an explicit IOMMU domain,
which usually means that it's connected to an IOMMU domain controlled by
the DMA API, make sure to map the framebuffer to the display controller
address space. This allows us to transparently handle setups where the
display controller is attached to an IOMMU or setups where it isn't. It
also allows the driver to work with a DMA API that is backed by an
IOMMU.

Signed-off-by: Thierry Reding <treding@nvidia.com>

drm/tegra: falcon: Clarify address usage

Rename paddr -> iova and vaddr -> virt to make it clearer how these
addresses are used. This is important for a subsequent patch that makes
a distinction between the physical address (physical address of the
system memory from the CPU's point of view) and the IOVA (physical
address of the system memory from the device's point of view).

Signed-off-by: Thierry Reding <treding@nvidia.com>

drm/tegra: Remove memory allocation from Falcon library

Having to provide allocator hooks to the Falcon library is somewhat
cumbersome and it doesn't give the users of the library a lot of
flexibility to deal with allocations. Instead, remove the notion of
Falcon "operations" and let drivers deal with the memory allocations
themselves.

Signed-off-by: Thierry Reding <treding@nvidia.com>

gpu: host1x: Set DMA mask based on IOMMU setup

If the Tegra DRM clients are backed by an IOMMU, push buffers are likely
to be allocated beyond the 32-bit boundary if sufficient system memory
is available. This is problematic on earlier generations of Tegra where
host1x supports a maximum of 32 address bits for the GATHER opcode. More
recent versions of Tegra (Tegra186 and later) have a wide variant of the
GATHER opcode, which allows addressing up to 64 bits of memory.

If host1x itself is behind an IOMMU as well this doesn't matter because
the IOMMU's input address space is restricted to 32 bits on generations
without support for wide GATHER opcodes.

However, if host1x is not behind an IOMMU, it won't be able to process
push buffers beyond the 32-bit boundary on Tegra generations that don't
support wide GATHER opcodes. Restrict the DMA mask to 32 bits on these
generations prevents buffers from being allocated from beyond the 32-bit
boundary.

Signed-off-by: Thierry Reding <treding@nvidia.com>

gpu: host1x: Support DMA mapping of buffers

If host1x_bo_pin() returns an SG table, create a DMA mapping for the
buffer. For buffers that the host1x client has already mapped itself,
host1x_bo_pin() returns NULL and the existing DMA address is used.

Signed-off-by: Thierry Reding <treding@nvidia.com>

gpu: host1x: Allocate gather copy for host1x

Currently when the gather buffers are copied, they are copied to a
buffer that is allocated for the host1x client that wants to execute the
command streams in the buffers. However, the gather buffers will be read
by the host1x device, which causes SMMU faults if the DMA API is backed
by an IOMMU.

Fix this by allocating the gather buffer copy for the host1x device,
which makes sure that it will be mapped into the host1x's IOVA space if
the DMA API is backed by an IOMMU.

Signed-off-by: Thierry Reding <treding@nvidia.com>

gpu: host1x: Add direction flags to relocations

Add direction flags to host1x relocations performed during job pinning.
These flags indicate the kinds of accesses that hardware is allowed to
perform on the relocated buffers.

Signed-off-by: Thierry Reding <treding@nvidia.com>