Commit Graph

91574 Commits

Author SHA1 Message Date
Arnd Bergmann 08570b7c8d gpu: host1x: fix uninitialized variable use
The error handling for platform_get_irq() failing no longer
works after a recent change, clang now points this out with
a warning:

drivers/gpu/host1x/dev.c:520:6: error: variable 'syncpt_irq' is uninitialized when used here [-Werror,-Wuninitialized]
        if (syncpt_irq < 0)
            ^~~~~~~~~~

Fix this by removing the variable and checking the correct
error status.

Fixes: 625d4ffb43 ("gpu: host1x: Rewrite syncpoint interrupt handling")
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Reported-by: "kernelci.org bot" <bot@kernelci.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20230127221418.2522612-1-arnd@kernel.org
2023-03-24 10:46:12 +01:00
Daniel Vetter 2e4e9de162 Merge tag 'amd-drm-fixes-6.3-2023-03-23' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes
amd-drm-fixes-6.3-2023-03-23:

amdgpu:
- S4 fix
- Soft reset fixes
- SR-IOV fix
- Remove an out of date comment in the DC code
- ASPM fix
- DCN 3.2 fixes

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230323161939.7751-1-alexander.deucher@amd.com
2023-03-24 10:23:29 +01:00
Daniel Vetter e37fef79bf Merge tag 'drm-intel-fixes-2023-03-23' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
drm/i915 fixes for v6.3-rc4:
- Fix an MTL workaround
- Fix fbdev obj locking before vma pin
- Fix state inheritance tracking in initial commit
- Fix missing GuC error capture codes
- Fix missing debug object activation
- Fix uc init late order relative to probe error injection
- Fix perf limit reasons formatting
- Fix vblank timestamp update on seamless M/N changes

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/878rfn7njw.fsf@intel.com
2023-03-24 10:18:44 +01:00
Daniel Vetter 9b5dbf6b15 Short summary of fixes pull:
* fixes for bind and probing error handling
  * panel-orientation fixes for Lenovo Book X90F
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Merge tag 'drm-misc-fixes-2023-03-23' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

Short summary of fixes pull:

 * fixes for bind and probing error handling for meson, lt8912b bridge
 * panel-orientation fixes for Lenovo Book X90F

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230323082401.GA8371@linux-uq9g
2023-03-24 09:33:39 +01:00
Hersen Wu f9537b1fa7 drm/amd/display: Set dcn32 caps.seamless_odm
[Why & How]
seamless_odm set was not picked up while
merging commit 2d017189e2 ("drm/amd/display:
Blank eDP on enable drv if odm enabled")

Fixes: 2d017189e2 ("drm/amd/display: Blank eDP on enable drv if odm enabled")
Reviewed-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Hersen Wu <hersenxs.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-03-23 09:39:34 -04:00
Hersen Wu 4c94e57c25 drm/amd/display: fix wrong index used in dccg32_set_dpstreamclk
[Why & How]
When merging commit 9af611f290
("drm/amd/display: Fix DCN32 DPSTREAMCLK_CNTL programming"),
index change was not picked up.

Cc: stable@vger.kernel.org
Cc: Mario Limonciello <mario.limonciello@amd.com>
Fixes: 9af611f290 ("drm/amd/display: Fix DCN32 DPSTREAMCLK_CNTL programming")
Reviewed-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Hersen Wu <hersenxs.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-03-23 09:39:34 -04:00
Kai-Heng Feng 2b072442f4 drm/amdgpu/nv: Apply ASPM quirk on Intel ADL + AMD Navi
S2idle resume freeze can be observed on Intel ADL + AMD WX5500. This is
caused by commit 0064b0ce85 ("drm/amd/pm: enable ASPM by default").

The root cause is still not clear for now.

So extend and apply the ASPM quirk from commit e02fe3bc7a
("drm/amdgpu: vi: disable ASPM on Intel Alder Lake based systems"), to
workaround the issue on Navi cards too.

Fixes: 0064b0ce85 ("drm/amd/pm: enable ASPM by default")
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2458
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2023-03-23 09:34:35 -04:00
Alex Hung 6d457ca162 drm/amd/display: remove outdated 8bpc comments
[Why]
The commit c76e483cd9 ("drm/amd/display: Don't restrict bpc to 8 bpc")
removes the historical 8bpc dependency and sets max_bpc to 16.

[How]
The comment that states "8bpc for non-edp" needs to be removed as well.

Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-03-23 09:34:07 -04:00
Jane Jian e06bfcc1a1 drm/amdgpu/gfx: set cg flags to enter/exit safe mode
sriov needs to enter/exit safe mode in update umd p state
add the cg flag to let it enter or exit while needed

Signed-off-by: Jane Jian <Jane.Jian@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-03-23 09:32:01 -04:00
YuBiao Wang 033c56474a drm/amdgpu: Force signal hw_fences that are embedded in non-sched jobs
[Why]
For engines not supporting soft reset, i.e. VCN, there will be a failed
ib test before mode 1 reset during asic reset. The fences in this case
are never signaled and next time when we try to free the sa_bo, kernel
will hang.

[How]
During pre_asic_reset, driver will clear job fences and afterwards the
fences' refcount will be reduced to 1. For drm_sched_jobs it will be
released in job_free_cb, and for non-sched jobs like ib_test, it's meant
to be released in sa_bo_free but only when the fences are signaled. So
we have to force signal the non_sched bad job's fence during
pre_asic_reset or the clear is not complete.

Signed-off-by: YuBiao Wang <YuBiao.Wang@amd.com>
Acked-by: Luben Tuikov <luben.tuikov@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-03-23 09:31:30 -04:00
Tong Liu01 4eb0b49a0a drm/amdgpu: add mes resume when do gfx post soft reset
[why]
when gfx do soft reset, mes will also do reset, if mes is not
resumed when do recover from soft reset, mes is unable to respond
in later sequence

[how]
resume mes when do gfx post soft reset

Signed-off-by: Tong Liu01 <Tong.Liu01@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-03-23 09:30:59 -04:00
Tim Huang b589626674 drm/amdgpu: skip ASIC reset for APUs when go to S4
For GC IP v11.0.4/11, PSP TMR need to be reserved
for ASIC mode2 reset. But for S4, when psp suspend,
it will destroy the TMR that fails the ASIC reset.

[  96.006101] amdgpu 0000:62:00.0: amdgpu: MODE2 reset
[  100.409717] amdgpu 0000:62:00.0: amdgpu: SMU: I'm not done with your previous command: SMN_C2PMSG_66:0x00000011 SMN_C2PMSG_82:0x00000002
[  100.411593] amdgpu 0000:62:00.0: amdgpu: Mode2 reset failed!
[  100.412470] amdgpu 0000:62:00.0: PM: pci_pm_freeze(): amdgpu_pmops_freeze+0x0/0x50 [amdgpu] returns -62
[  100.414020] amdgpu 0000:62:00.0: PM: dpm_run_callback(): pci_pm_freeze+0x0/0xd0 returns -62
[  100.415311] amdgpu 0000:62:00.0: PM: pci_pm_freeze+0x0/0xd0 returned -62 after 4623202 usecs
[  100.416608] amdgpu 0000:62:00.0: PM: failed to freeze async: error -62

We can skip the reset on APUs, assuming we can resume them
properly. Verified on some GFX11, GFX10 and old GFX9 APUs.

Signed-off-by: Tim Huang <tim.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.1.x
2023-03-23 09:29:55 -04:00
Tim Huang aaee0ce460 drm/amdgpu: reposition the gpu reset checking for reuse
Move the amdgpu_acpi_should_gpu_reset out of
CONFIG_SUSPEND to share it with hibernate case.

Signed-off-by: Tim Huang <tim.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.1.x
2023-03-23 09:29:32 -04:00
Matheus Castello 1a70ca89d5 drm/bridge: lt8912b: return EPROBE_DEFER if bridge is not found
Returns EPROBE_DEFER when of_drm_find_bridge() fails, this is consistent
with what all the other DRM bridge drivers are doing and this is
required since the bridge might not be there when the driver is probed
and this should not be a fatal failure.

Cc: <stable@vger.kernel.org>
Fixes: 30e2ae943c ("drm/bridge: Introduce LT8912B DSI to HDMI bridge")
Signed-off-by: Matheus Castello <matheus.castello@toradex.com>
Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230322143821.109744-1-francesco@dolcini.it
2023-03-22 18:01:57 +01:00
Johan Hovold ba98413bf4 drm/meson: fix missing component unbind on bind errors
Make sure to unbind all subcomponents when binding the aggregate device
fails.

Fixes: a41e82e6c4 ("drm/meson: Add support for components")
Cc: stable@vger.kernel.org      # 4.12
Cc: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Acked-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230306103533.4915-1-johan+linaro@kernel.org
2023-03-22 18:00:38 +01:00
Hans de Goede 03aecb1acb drm: panel-orientation-quirks: Add quirk for Lenovo Yoga Book X90F
Like the Windows Lenovo Yoga Book X91F/L the Android Lenovo Yoga Book
X90F/L has a portrait 1200x1920 screen used in landscape mode,
add a quirk for this.

When the quirk for the X91F/L was initially added it was written to
also apply to the X90F/L but this does not work because the Android
version of the Yoga Book uses completely different DMI strings.
Also adjust the X91F/L quirk to reflect that it only applies to
the X91F/L models.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230301095218.28457-1-hdegoede@redhat.com
2023-03-21 11:40:04 +01:00
Ashutosh Dixit 22aa20e4c5 Revert "drm/i915/hwmon: Enable PL1 power limit"
This reverts commit ee892ea83d.

It was accidentally picked up for backporting. Revert.

Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230319140300.2892032-1-ashutosh.dixit@intel.com
2023-03-20 12:31:01 +02:00
Ville Syrjälä 59ad01c786 drm/i915: Update vblank timestamping stuff on seamless M/N change
When we change the M/N values seamlessly during a fastset we should
also update the vblank timestamping stuff to make sure the vblank
timestamp corrections/guesstimations come out exact.

Note that only crtc_clock and framedur_ns can actually end up
changing here during fastsets. Everything else we touch can
only change during full modesets.

Technically we should try to do this exactly at the start of
vblank, but that would require some kind of double buffering
scheme. Let's skip that for now and just update things right
after the commit has been submitted to the hardware. This
means the information will be properly up to date when the
vblank irq handler goes to work. Only if someone ends up
querying some vblanky stuff in between the commit and start
of vblank may we see a slight discrepancy.

Also this same problem really exists for the DRRS downclocking
stuff. But as that is supposed to be more or less transparent
to the user, and it only drops to low gear after a long delay
(1 sec currently) we probably don't have to worry about it.
Any time something is actively submitting updates DRRS will
remain in high gear and so the timestamping constants will
match the hardware state.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Mitul Golani <mitulkumar.ajitkumar.golani@intel.com>
Fixes: e6f29923c0 ("drm/i915: Allow M/N change during fastset on bdw+")
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230310235828.17439-1-ville.syrjala@linux.intel.com
(cherry picked from commit 8cb1f95cca)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2023-03-20 11:00:43 +02:00
Vinay Belgaumkar f8d62aa8d2 drm/i915: Fix format for perf_limit_reasons
Use hex format so that it is easier to decode.

Fixes: fe5979665f ("drm/i915/debugfs: Add perf_limit_reasons in debugfs")
Signed-off-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Reviewed-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230315022906.2467408-1-vinay.belgaumkar@intel.com
(cherry picked from commit 5e008ba67c)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2023-03-20 11:00:37 +02:00
Andrzej Hajda 150784f928 drm/i915/gt: perform uc late init after probe error injection
Probe pseudo errors should be injected only in places where real errors
can be encountered, otherwise unwinding code can be broken.
Placing intel_uc_init_late before i915_inject_probe_error violated
this rule, resulting in following bug:
__intel_gt_disable:655 GEM_BUG_ON(intel_gt_pm_is_awake(gt))

Fixes: 481d458cae ("drm/i915/guc: Add golden context to GuC ADS")
Acked-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230314151920.1065847-1-andrzej.hajda@intel.com
(cherry picked from commit c4252a1113)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2023-03-20 11:00:31 +02:00
Nirmoy Das e92eb246fe drm/i915/active: Fix missing debug object activation
debug_active_activate() expected ref->count to be zero
which is not true anymore as __i915_active_activate() calls
debug_active_activate() after incrementing the count.

v2: No need to check for "ref->count == 1" as __i915_active_activate()
already make sure of that(Janusz).

References: https://gitlab.freedesktop.org/drm/intel/-/issues/6733
Fixes: 04240e30ed ("drm/i915: Skip taking acquire mutex for no ref->active callback")
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@intel.com>
Cc: Andi Shyti <andi.shyti@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Cc: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Cc: <stable@vger.kernel.org> # v5.10+
Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230313114613.9874-1-nirmoy.das@intel.com
(cherry picked from commit bfad380c54)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2023-03-20 11:00:22 +02:00
John Harrison 8df23e4c4f drm/i915/guc: Fix missing ecodes
Error captures are tagged with an 'ecode'. This is a pseduo-unique magic
number that is meant to distinguish similar seeming bugs with
different underlying signatures. It is a combination of two ring state
registers. Unfortunately, the register state being used is only valid
in execlist mode. In GuC mode, the register state exists in a separate
list of arbitrary register address/value pairs rather than the named
entry structure. So, search through that list to find the two exciting
registers and copy them over to the structure's named members.

v2: if else if instead of if if (Alan)

Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Alan Previn <alan.previn.teres.alexis@intel.com>
Fixes: a6f0f9cf33 ("drm/i915/guc: Plumb GuC-capture into gpu_coredump")
Cc: Alan Previn <alan.previn.teres.alexis@intel.com>
Cc: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: Aravind Iddamsetty <aravind.iddamsetty@intel.com>
Cc: Michael Cheng <michael.cheng@intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Bruce Chang <yu.bruce.chang@intel.com>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230311063714.570389-2-John.C.Harrison@Intel.com
(cherry picked from commit 9724ecdbb9)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2023-03-20 11:00:16 +02:00
Badal Nilawar 088a422c3f drm/i915/mtl: Disable MC6 for MTL A step
The Wa_14017073508 require to send Media Busy/Idle mailbox while
accessing Media tile. As of now it is getting handled while __gt_unpark,
__gt_park. But there are various corner cases where forcewakes are taken
without __gt_unpark i.e. without sending Busy Mailbox especially during
register reads. Forcewakes are taken without busy mailbox leads to
GPU HANG. So bringing mailbox calls under forcewake calls are no feasible
option as forcewake calls are atomic and mailbox calls are blocking.
The issue already fixed in B step so disabling MC6 on A step and
reverting previous commit which handles Wa_14017073508

Fixes: 8f70f1ec58 ("drm/i915/mtl: Add Wa_14017073508 for SAMedia")
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Badal Nilawar <badal.nilawar@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Anshuman Gupta <anshuman.gupta@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230310061339.2495416-2-badal.nilawar@intel.com
(cherry picked from commit 038a24835a)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2023-03-20 11:00:11 +02:00
Ville Syrjälä 3a84f2c6c9 drm/i915: Preserve crtc_state->inherited during state clearing
intel_crtc_prepare_cleared_state() is unintentionally losing
the "inherited" flag. This will happen if intel_initial_commit()
is forced to go through the full modeset calculations for
whatever reason.

Afterwards the first real commit from userspace will not get
forced to the full modeset path, and thus eg. audio state may
not get recomputed properly. So if the monitor was already
enabled during boot audio will not work until userspace itself
does an explicit full modeset.

Cc: stable@vger.kernel.org
Tested-by: Lee Shawn C <shawn.c.lee@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230223152048.20878-1-ville.syrjala@linux.intel.com
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
(cherry picked from commit 2553bacaf9)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2023-03-20 11:00:05 +02:00
Tejas Upadhyay ed00eba034 drm/i915/fbdev: lock the fbdev obj before vma pin
lock the fbdev obj before calling into
i915_vma_pin_iomap(). This helps to solve below :

<7>[   93.563308] i915 0000:00:02.0: [drm:intelfb_create [i915]] no BIOS fb, allocating a new one
<4>[   93.581844] ------------[ cut here ]------------
<4>[   93.581855] WARNING: CPU: 12 PID: 625 at drivers/gpu/drm/i915/gem/i915_gem_pages.c:424 i915_gem_object_pin_map+0x152/0x1c0 [i915]

Fixes: f0b6b01b3e ("drm/i915: Add ww context to intel_dpt_pin, v2.")
Cc: Chris Wilson <chris.p.wilson@intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Tejas Upadhyay <tejas.upadhyay@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230301201053.928709-5-radhakrishna.sripada@intel.com
(cherry picked from commit 561b31acfd)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2023-03-20 11:00:00 +02:00
Radhakrishna Sripada 364ac7863f drm/i915/mtl: Fix Wa_16015201720 implementation
The commit 2357f2b271 ("drm/i915/mtl: Initial display workarounds")
extended the workaround Wa_16015201720 to MTL. However the registers
that the original WA implemented moved for MTL.

Implement the workaround with the correct register.

v3: Skip clock gating for pipe C, D DMC's and fix the title

Fixes: 2357f2b271 ("drm/i915/mtl: Initial display workarounds")
Cc: Matt Atwood <matthew.s.atwood@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230301201053.928709-2-radhakrishna.sripada@intel.com
(cherry picked from commit 0188be507b)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2023-03-20 10:59:54 +02:00
Christian König c00133a9e8 drm/ttm: drop extra ttm_bo_put in ttm_bo_cleanup_refs
That was accidentially left over when we switched to the delayed delete
worker.

Suggested-by: Matthew Auld <matthew.william.auld@gmail.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Fixes: 9bff18d134 ("drm/ttm: use per BO cleanup workers")
Reported-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Tested-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230316072647.406707-1-christian.koenig@amd.com
2023-03-17 16:06:58 +10:00
Dave Airlie c31a72dbbf Merge tag 'amd-drm-fixes-6.3-2023-03-15' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes
amd-drm-fixes-6.3-2023-03-15:

amdgpu:
- SMU 13 update
- RDNA2 suspend/resume fix when overclocking is enabled
- SRIOV VCN fixes
- HDCP suspend/resume fix
- Fix drm polling splat regression
- Fix dirty rectangle tracking for PSR
- Fix vangogh regression on certain BIOSes
- Misc display fixes
- Suspend/resume IOMMU regression fix

amdkfd:
- Fix BO offset for multi-VMA page migration
- Fix a possible double free
- Fix potential use after free
- Fix process cleanup on module exit

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230315224400.7558-1-alexander.deucher@amd.com
2023-03-17 15:42:21 +10:00
Dave Airlie 2a210e6a15 Merge tag 'drm-intel-fixes-2023-03-15' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
drm/i915 fixes for v6.3-rc3:
- Fix hwmon PL1 power limit enabling
- Fix audio ELD handling for DP MST
- Fix PSR io and wake line calculations
- Fix DG2 HDMI modes with 267.30 and 319.89 MHz pixel clocks
- Fix SSEU subslice out-of-bounds access
- Fix misuse of non-idle barriers as fence trackers

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/87r0tq5nyn.fsf@intel.com
2023-03-17 12:03:58 +10:00
Felix Kuehling f3921a9a64 drm/amdgpu: Don't resume IOMMU after incomplete init
Check kfd->init_complete in kgd2kfd_iommu_resume, consistent with other
kgd2kfd calls. This should fix IOMMU errors on resume from suspend when
KFD IOMMU initialization failed.

Reported-by: Matt Fagnani <matt.fagnani@bell.net>
Link: https://lore.kernel.org/r/4a3b225c-2ffd-e758-4de1-447375e34cad@bell.net/
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217170
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2454
Cc: Vasant Hegde <vasant.hegde@amd.com>
Cc: Linux regression tracking (Thorsten Leemhuis) <regressions@leemhuis.info>
Cc: stable@vger.kernel.org
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Tested-by: Matt Fagnani <matt.fagnani@bell.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-03-15 18:21:51 -04:00
David Belanger 20bc9f76b6 drm/amdkfd: Fixed kfd_process cleanup on module exit.
Handle case when module is unloaded (kfd_exit) before a process space
(mm_struct) is released.

v2: Fixed potential race conditions by removing all kfd_process from
the process table first, then working on releasing the resources.

v3: Fixed loop element access / synchronization.  Fixed extra empty lines.

Signed-off-by: David Belanger <david.belanger@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-03-15 18:21:05 -04:00
Ayush Gupta 7304ee979b drm/amd/display: disconnect MPCC only on OTG change
[Why]
Framedrops are observed while playing Vp9 and Av1 10 bit
video on 8k resolution using VSR while playback controls
are disappeared/appeared

[How]
Now ODM 2 to 1 is disabled for 5k or greater resolutions on VSR.

Cc: stable@vger.kernel.org
Cc: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Ayush Gupta <ayugupta@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-03-15 18:19:35 -04:00
Cruise Hung cbd6c1b17d drm/amd/display: Fix DP MST sinks removal issue
[Why]
In USB4 DP tunneling, it's possible to have this scenario that
the path becomes unavailable and CM tears down the path a little bit late.
So, in this case, the HPD is high but fails to read any DPCD register.
That causes the link connection type to be set to sst.
And not all sinks are removed behind the MST branch.

[How]
Restore the link connection type if it fails to read DPCD register.

Cc: stable@vger.kernel.org
Cc: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Wenjing Liu <Wenjing.Liu@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Cruise Hung <Cruise.Hung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-03-15 18:18:45 -04:00
Wesley Chalmers 56574f89db drm/amd/display: Do not set DRR on pipe Commit
[WHY]
Writing to DRR registers such as OTG_V_TOTAL_MIN on the same frame as a
pipe commit can cause underflow.

Cc: stable@vger.kernel.org
Cc: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Wesley Chalmers <Wesley.Chalmers@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-03-15 18:18:00 -04:00
Saaem Rizvi 709671ffb1 drm/amd/display: Remove OTG DIV register write for Virtual signals.
[WHY]
Hot plugging and then hot unplugging leads to k1 and k2 values to
change, as signal is detected as a virtual signal on hot unplug. Writing
these values to OTG_PIXEL_RATE_DIV register might cause primary display
to blank (known hw bug).

[HOW]
No longer write k1 and k2 values to register if signal is virtual, we
have safe guards in place in the case that k1 and k2 is unassigned so
that an unknown value is not written to the register either.

Cc: stable@vger.kernel.org
Cc: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Samson Tam <Samson.Tam@amd.com>
Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Saaem Rizvi <SyedSaaem.Rizvi@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-03-15 18:17:22 -04:00
Marek Szyprowski 4028cbf867 drm/meson: dw-hdmi: Fix devm_regulator_*get_enable*() conversion again
devm_regulator_get_enable_optional() returns -ENODEV if requested
optional regulator is not present. Adjust code for that, because in the
67d0a30128 I've incorrectly assumed that it also returns 0 when
regulator is not present.

Reported-by: Ricardo Cañuelo <ricardo.canuelo@collabora.com>
Fixes: 67d0a30128 ("drm/meson: dw-hdmi: Fix devm_regulator_*get_enable*() conversion")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230309152446.104913-1-m.szyprowski@samsung.com
2023-03-15 10:06:46 +01:00
Guilherme G. Piccoli 542a56e8eb drm/amdgpu/vcn: Disable indirect SRAM on Vangogh broken BIOSes
The VCN firmware loading path enables the indirect SRAM mode if it's
advertised as supported. We might have some cases of FW issues that
prevents this mode to working properly though, ending-up in a failed
probe. An example below, observed in the Steam Deck:

[...]
[drm] failed to load ucode VCN0_RAM(0x3A)
[drm] psp gfx command LOAD_IP_FW(0x6) failed and response status is (0xFFFF0000)
amdgpu 0000:04:00.0: [drm:amdgpu_ring_test_helper [amdgpu]] *ERROR* ring vcn_dec_0 test failed (-110)
[drm:amdgpu_device_init.cold [amdgpu]] *ERROR* hw_init of IP block <vcn_v3_0> failed -110
amdgpu 0000:04:00.0: amdgpu: amdgpu_device_ip_init failed
amdgpu 0000:04:00.0: amdgpu: Fatal error during GPU init
[...]

Disabling the VCN block circumvents this, but it's a very invasive
workaround that turns off the entire feature. So, let's add a quirk
on VCN loading that checks for known problematic BIOSes on Vangogh,
so we can proactively disable the indirect SRAM mode and allow the
HW proper probe and VCN IP block to work fine.

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2385
Fixes: 82132ecc54 ("drm/amdgpu: enable Vangogh VCN indirect sram mode")
Cc: stable@vger.kernel.org
Cc: James Zhu <James.Zhu@amd.com>
Cc: Leo Liu <leo.liu@amd.com>
Signed-off-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-03-14 10:40:48 -04:00
Alex Deucher 45aa07fa83 drm/amdgpu/nv: fix codec array for SR_IOV
Copy paste error.

Fixes: 384334120b ("drm/amdgpu/nv: don't expose AV1 if VCN0 is harvested")
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Link: https://bugzilla.openanolis.cn/show_bug.cgi?id=4454
Cc: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Acked-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-03-14 10:40:41 -04:00
Benjamin Cheng 751281c555 drm/amd/display: Write to correct dirty_rect
When FB_DAMAGE_CLIPS are provided in a non-MPO scenario, the loop does
not use the counter i. This causes the fill_dc_dity_rect() to always
fill dirty_rects[0], causing graphical artifacts when a damage clip
aware DRM client sends more than 1 damage clip.

Instead, use the flip_addrs->dirty_rect_count which is incremented by
fill_dc_dirty_rect() on a successful fill.

Fixes: 30ebe41582 ("drm/amd/display: add FB_DAMAGE_CLIPS support")
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2453
Signed-off-by: Benjamin Cheng <ben@bcheng.me>
Signed-off-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.1.x
2023-03-14 10:40:02 -04:00
Guchun Chen 3fadda5de8 drm/amdgpu: move poll enabled/disable into non DC path
Some amd asics having reliable hotplug support don't call
drm_kms_helper_poll_init in driver init sequence. However,
due to the unified suspend/resume path for all asics, because
the output_poll_work->func is not set for these asics, a warning
arrives when suspending.

[   90.656049]  <TASK>
[   90.656050]  ? console_unlock+0x4d/0x100
[   90.656053]  ? __irq_work_queue_local+0x27/0x60
[   90.656056]  ? irq_work_queue+0x2b/0x50
[   90.656057]  ? __wake_up_klogd+0x40/0x60
[   90.656059]  __cancel_work_timer+0xed/0x180
[   90.656061]  drm_kms_helper_poll_disable.cold+0x1f/0x2c [drm_kms_helper]
[   90.656072]  amdgpu_device_suspend+0x81/0x170 [amdgpu]
[   90.656180]  amdgpu_pmops_runtime_suspend+0xb5/0x1b0 [amdgpu]
[   90.656269]  pci_pm_runtime_suspend+0x61/0x1b0

drm_kms_helper_poll_enable/disable is valid when poll_init is called in
amdgpu code, which is only used in non DC path. So move such codes into
non-DC path code to get rid of such warnings.

v1: introduce use_kms_poll flag in amdgpu as the poll stuff check
v2: use dc_enabled as the flag to simply code
v3: move code into non DC path instead of relying on any flag

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2411
Fixes: a4e771729a ("drm/probe_helper: sort out poll_running vs poll_enabled")
Reported-by: Bert Karwatzki <spasswolf@web.de>
Suggested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Suggested-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2023-03-14 10:38:13 -04:00
Bhawanpreet Lakha 728cefa53a drm/amd/display: Fix HDCP failing to enable after suspend
[Why]
On resume some displays are not ready for HDCP, so they will fail if we
start the hdcp authentintication too soon.

Add a delay so that the displays can be ready before we start.

NOTE: Previoulsy this delay was set to 3 seconds but it was causing
issues with compliance, 2 seconds should enough for compliance and the
s3 resume case.

[How]
Change the Delay to 2 seconds.

Reviewed-by: Aurabindo Pillai <Aurabindo.Pillai@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-03-14 10:37:48 -04:00
Chia-I Wu 9da050b0d9 drm/amdkfd: fix potential kgd_mem UAFs
kgd_mem pointers returned by kfd_process_device_translate_handle are
only guaranteed to be valid while p->mutex is held. As soon as the mutex
is unlocked, another thread can free the BO.

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-03-14 10:37:22 -04:00
Jane Jian d71e38df3b drm/amdgpu/vcn: custom video info caps for sriov
for sriov, we added a new flag to indicate av1 support,
this will override the original caps info.

Signed-off-by: Jane Jian <Jane.Jian@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-03-14 10:37:09 -04:00
Błażej Szczygieł a9386ee968 drm/amd/pm: Fix sienna cichlid incorrect OD volage after resume
Always setup overdrive tables after resume. Preserve only some
user-defined settings in user_overdrive_table if they're set.

Copy restored user_overdrive_table into od_table to get correct
values.

On cold boot, BTC was triggered and GfxVfCurve was calibrated. We
got VfCurve settings (a). On resuming back, BTC will be triggered
again and GfxVfCurve will be recalibrated. VfCurve settings (b)
got may be different from those of cold boot.  So if we reuse
those VfCurve settings (a) got on cold boot on suspend, we can
run into discrepencies.

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1897
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2276
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Błażej Szczygieł <mumei6102@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2023-03-14 10:36:25 -04:00
Tim Huang ab9bdb1213 drm/amd/pm: bump SMU 13.0.4 driver_if header version
Align the SMU driver interface version with PMFW to
suppress the version mismatch message on driver loading.

Signed-off-by: Tim Huang <tim.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.1.x
2023-03-14 10:30:47 -04:00
Chia-I Wu b2ca5c5d41 drm/amdkfd: fix a potential double free in pqm_create_queue
Set *q to NULL on errors, otherwise pqm_create_queue would free it
again.

Signed-off-by: Chia-I Wu <olvaffe@gmail.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-03-14 10:30:29 -04:00
Xiaogang Chen 8eeddc0d42 drm/amdkfd: Get prange->offset after svm_range_vram_node_new
During miration to vram prange->offset is valid after vram buffer is located,
either use old one or allocate a new one. Move svm_range_vram_node_new before
migrate for each vma to get valid prange->offset.

v2: squash in warning fix

Fixes: b4ee960637 ("drm/amdkfd: Fix BO offset for multi-VMA page migration")
Signed-off-by: Xiaogang Chen <Xiaogang.Chen@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-03-14 10:29:52 -04:00
Xiaogang Chen b4ee960637 drm/amdkfd: Fix BO offset for multi-VMA page migration
svm_migrate_ram_to_vram migrates a prange from sys ram to vram. The prange may
cross multiple vma. Need remember current dst vram offset in the TTM resource for
each migration.

v2: squash in warning fix (Alex)

Signed-off-by: Xiaogang Chen <Xiaogang.Chen@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2023-03-14 10:27:37 -04:00
Janusz Krzysztofik e0e6b416b2 drm/i915/active: Fix misuse of non-idle barriers as fence trackers
Users reported oopses on list corruptions when using i915 perf with a
number of concurrently running graphics applications.  Root cause analysis
pointed at an issue in barrier processing code -- a race among perf open /
close replacing active barriers with perf requests on kernel context and
concurrent barrier preallocate / acquire operations performed during user
context first pin / last unpin.

When adding a request to a composite tracker, we try to reuse an existing
fence tracker, already allocated and registered with that composite.  The
tracker we obtain may already track another fence, may be an idle barrier,
or an active barrier.

If the tracker we get occurs a non-idle barrier then we try to delete that
barrier from a list of barrier tasks it belongs to.  However, while doing
that we don't respect return value from a function that performs the
barrier deletion.  Should the deletion ever fail, we would end up reusing
the tracker still registered as a barrier task.  Since the same structure
field is reused with both fence callback lists and barrier tasks list,
list corruptions would likely occur.

Barriers are now deleted from a barrier tasks list by temporarily removing
the list content, traversing that content with skip over the node to be
deleted, then populating the list back with the modified content.  Should
that intentionally racy concurrent deletion attempts be not serialized,
one or more of those may fail because of the list being temporary empty.

Related code that ignores the results of barrier deletion was initially
introduced in v5.4 by commit d8af05ff38 ("drm/i915: Allow sharing the
idle-barrier from other kernel requests").  However, all users of the
barrier deletion routine were apparently serialized at that time, then the
issue didn't exhibit itself.  Results of git bisect with help of a newly
developed igt@gem_barrier_race@remote-request IGT test indicate that list
corruptions might start to appear after commit 311770173f ("drm/i915/gt:
Schedule request retirement when timeline idles"), introduced in v5.5.

Respect results of barrier deletion attempts -- mark the barrier as idle
only if successfully deleted from the list.  Then, before proceeding with
setting our fence as the one currently tracked, make sure that the tracker
we've got is not a non-idle barrier.  If that check fails then don't use
that tracker but go back and try to acquire a new, usable one.

v3: use unlikely() to document what outcome we expect (Andi),
  - fix bad grammar in commit description.
v2: no code changes,
  - blame commit 311770173f ("drm/i915/gt: Schedule request retirement
    when timeline idles"), v5.5, not commit d8af05ff38 ("drm/i915: Allow
    sharing the idle-barrier from other kernel requests"), v5.4,
  - reword commit description.

Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/6333
Fixes: 311770173f ("drm/i915/gt: Schedule request retirement when timeline idles")
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@vger.kernel.org # v5.5
Cc: Andi Shyti <andi.shyti@linux.intel.com>
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230302120820.48740-1-janusz.krzysztofik@linux.intel.com
(cherry picked from commit 5060060557)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2023-03-13 11:38:05 +02:00
Andrea Righi 193c41926d drm/i915/sseu: fix max_subslices array-index-out-of-bounds access
It seems that commit bc3c5e0809 ("drm/i915/sseu: Don't try to store EU
mask internally in UAPI format") exposed a potential out-of-bounds
access, reported by UBSAN as following on a laptop with a gen 11 i915
card:

  UBSAN: array-index-out-of-bounds in drivers/gpu/drm/i915/gt/intel_sseu.c:65:27
  index 6 is out of range for type 'u16 [6]'
  CPU: 2 PID: 165 Comm: systemd-udevd Not tainted 6.2.0-9-generic #9-Ubuntu
  Hardware name: Dell Inc. XPS 13 9300/077Y9N, BIOS 1.11.0 03/22/2022
  Call Trace:
   <TASK>
   show_stack+0x4e/0x61
   dump_stack_lvl+0x4a/0x6f
   dump_stack+0x10/0x18
   ubsan_epilogue+0x9/0x3a
   __ubsan_handle_out_of_bounds.cold+0x42/0x47
   gen11_compute_sseu_info+0x121/0x130 [i915]
   intel_sseu_info_init+0x15d/0x2b0 [i915]
   intel_gt_init_mmio+0x23/0x40 [i915]
   i915_driver_mmio_probe+0x129/0x400 [i915]
   ? intel_gt_probe_all+0x91/0x2e0 [i915]
   i915_driver_probe+0xe1/0x3f0 [i915]
   ? drm_privacy_screen_get+0x16d/0x190 [drm]
   ? acpi_dev_found+0x64/0x80
   i915_pci_probe+0xac/0x1b0 [i915]
   ...

According to the definition of sseu_dev_info, eu_mask->hsw is limited to
a maximum of GEN_MAX_SS_PER_HSW_SLICE (6) sub-slices, but
gen11_sseu_info_init() can potentially set 8 sub-slices, in the
!IS_JSL_EHL(gt->i915) case.

Fix this by reserving up to 8 slots for max_subslices in the eu_mask
struct.

Reported-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Signed-off-by: Andrea Righi <andrea.righi@canonical.com>
Fixes: bc3c5e0809 ("drm/i915/sseu: Don't try to store EU mask internally in UAPI format")
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230220171858.131416-1-andrea.righi@canonical.com
(cherry picked from commit 3cba09a6ac)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2023-03-13 11:38:05 +02:00