linux.git/drivers/gpu/drm/i915/Kconfig.debug, branch v5.3.2

drm/i915: Enable refcount debugging for default debug levels

2019-06-14T11:16:08+00:00

refcount_t is our first line of defence against use-after-free, so let's
enable it for debugging.

Signed-off-by: Chris Wilson 
Acked-by: Rodrigo Vivi 
Link: https://patchwork.freedesktop.org/patch/msgid/20190613122842.4840-1-chris@chris-wilson.co.uk

drm/i915: Make default value for i915.mmio_debug a compile time option

2019-05-31T09:47:02+00:00

The normal behaviour is to periodically check for a mmio access error,
and once detected enable mmio access checking. However this is useless
if the error only occurs once during module load, and so we may miss
such errors in CI. To allow ourselves to catch them, allow CI to opt into
always enabling mmio debugging.

Signed-off-by: Chris Wilson 
Cc: Mika Kuoppala 
Reviewed-by: Joonas Lahtinen 
Link: https://patchwork.freedesktop.org/patch/msgid/20190530121311.6794-1-chris@chris-wilson.co.uk

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21T08:50:46+00:00

Add SPDX license identifiers to all Make/Kconfig files which:

 - Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

  GPL-2.0-only

Signed-off-by: Thomas Gleixner 
Signed-off-by: Greg Kroah-Hartman

drm/i915: Track all held rpm wakerefs

2019-01-14T16:17:50+00:00

Everytime we take a wakeref, record the stack trace of where it was
taken; clearing the set if we ever drop back to no owners. For debugging
a rpm leak, we can look at all the current wakerefs and check if they
have a matching rpm_put.

v2: Use skip=0 for unwinding the stack as it appears our noinline
function doesn't appear on the stack (nor does save_stack_trace itself!)
v3: Allow rpm->debug_count to disappear between inspections and so
avoid calling krealloc(0) as that may return a ZERO_PTR not NULL! (Mika)
v4: Show who last acquire/released the runtime pm

Signed-off-by: Chris Wilson 
Cc: Jani Nikula 
Cc: Mika Kuoppala 
Reviewed-by: Mika Kuoppala 
Tested-by: Mika Kuoppala 
Link: https://patchwork.freedesktop.org/patch/msgid/20190114142129.24398-1-chris@chris-wilson.co.uk

drm/i915: Verify power domains after enabling them

2018-08-20T09:13:09+00:00

After
commit 2cd9a689e97b ("drm/i915: Refactor intel_display_set_init_power() logic")
it makes more sense to check the power domain/well refcounts after
enabling the power domains functionality. Before that it's guaranteed
that most power wells (in the INIT domain) will have a reference held,
so not an interesting state.

While at it also add the check after the init_hw/fini_hw, disable and
suspend/resume steps. Make the test optional on a Kconfig option since
it may add substantial overhead: on VLV/CHV the corresponding PUNIT reg
access for each power well may take up to 20ms.

v2:
- Add the state check to more spots. (Chris)

v3:
- During suspend check the state before deiniting display core.
  Afterwards DC states are disabled (and so the dc_off power well is
  enabled) even though we don't hold a reference on it.
- Do the test conditionally based on a new Kconfig option. (Chris)

Cc: Chris Wilson 
Reviewed-by: Chris Wilson 
[Add DRM_I915_DEBUG_RUNTIME_PM to welcome messages]
Signed-off-by: Imre Deak 
Link: https://patchwork.freedesktop.org/patch/msgid/20180817145837.26592-1-imre.deak@intel.com

Merge tag 'drm-intel-next-2018-07-09' of git://anongit.freedesktop.org/drm/drm-intel into drm-next

2018-07-18T19:46:30+00:00

Higlights here goes to many PSR fixes and improvements; to the Ice lake work with
power well support and begin of DSI support addition. Also there were many improvements
on execlists and interrupts for minimal latency on command submission; and many fixes
on selftests, mostly caught by our CI.

General driver:
- Clean-up on aux irq (Lucas)
- Mark expected switch fall-through for dealing with static analysis tools (Gustavo)

Gem:
- Different fixes for GuC (Chris, Anusha, Michal)
- Avoid self-relocation BIAS if no relocation (Chris)
- Improve debugging cases in on EINVAL return and vma allocation (Chris)
- Fixes and improvements on context destroying and freeing (Chris)
- Wait for engines to idle before retiring (Chris)
- Many improvements on execlists and interrupts for minimal latency on command submission (Chris)
- Many fixes in selftests, specially on cases highlighted on CI (Chris)
- Other fixes and improvements around GGTT (Chris)
- Prevent background reaping of active objects (Chris)

Display:
- Parallel modeset cleanup to fix driver reset (Chris)
- Get AUX power domain for DP main link (Imre)
- Clean-up on PSR unused func pointers (Rodrigo)
- Many PSR/PSR2 fixes and improvements (DK, Jose, Tarun)
- Add a PSR1 live status (Vathsala)
- Replace old drm_*_{un/reference} with put,get functions (Thomas)
- FBC fixes (Maarten)
- Abstract and document the usage of picking macros (Jani)
- Remove unnecessary check for unsupported modifiers for NV12. (DK)
- Interrupt fixes for display (Ville)
- Clean up on sdvo code (Ville)
- Clean up on current DSI code (Jani)
- Remove support for legacy debugfs crc interface (Maarten)
- Simplify get_encoder_power_domains (Imre)

Icelake:
- MG PLL fixes (Imre)
- Add hw workaround for alpha blending (Vandita)
- Add power well support (Imre)
- Add Interrupt Support (Anusha)
- Start to add support for DSI on Ice Lake (Madhav)

Signed-off-by: Dave Airlie 

# gpg: Signature made Tue 10 Jul 2018 08:41:37 AM AEST
# gpg:                using RSA key FA625F640EEB13CA
# gpg: Good signature from "Rodrigo Vivi "
# gpg:                 aka "Rodrigo Vivi "
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 6D20 7068 EEDD 6509 1C2C  E2A3 FA62 5F64 0EEB 13CA
Link: https://patchwork.freedesktop.org/patch/msgid/20180710234349.GA16562@intel.com

drm/i915: Squelch very verbose error logging

2018-07-06T10:23:47+00:00

Having found the error causing the IGT test to fail, downgrade the
verbose logging so that we stop flooding the syslogs as we deliberately
provoke it many thousands of time during selftests.

References: 10195b1e4411 ("drm/i915: Show vma allocator stack when in doubt")
Signed-off-by: Chris Wilson 
Reviewed-by: Matthew Auld 
Link: https://patchwork.freedesktop.org/patch/msgid/20180706065332.15214-1-chris@chris-wilson.co.uk

Merge remote-tracking branch 'drm/drm-next' into drm-misc-next

2018-05-11T16:08:10+00:00

drm-misc-next is still based on v4.16-rc7, and was getting a bit stale.

Signed-off-by: Maarten Lankhorst

drm/selftests: Rename the Kconfig option to CONFIG_DRM_DEBUG_SELFTEST

2018-05-04T09:36:34+00:00

We want to add more DRM selftests, and there's not much point in
having a Kconfig option for every single one of them, so make
a generic one.

Signed-off-by: Maarten Lankhorst 
Reviewed-by: Ville Syrjälä 
Link: https://patchwork.freedesktop.org/patch/msgid/20180503112217.37292-5-maarten.lankhorst@linux.intel.com
[mlankhorst: Fix i915/Kconfig.debug (ickle)]
Acked-by: Chris Wilson 
Acked-by: Daniel Vetter

drm/i915/guc: Trace messages from CT while in debug

2018-03-28T19:38:23+00:00

During debug we may want to investigate all communication
from the Guc. Add proper tracing macros in debug config.

v2: convert remaining DRM_DEBUG into new CT_DEBUG (Michal)
v3: use dedicated Kconfig (Daniele)
v4: checkpatch

Signed-off-by: Michal Wajdeczko 
Cc: Daniele Ceraolo Spurio 
Cc: Chris Wilson 
Acked-by: Daniele Ceraolo Spurio 
Signed-off-by: Chris Wilson 
Link: https://patchwork.freedesktop.org/patch/msgid/20180326194829.58836-12-michal.wajdeczko@intel.com