platform/kernel/linux-starfive.git
13 months agodrm/i915/hdcp: Move away from master naming to arbiter
Suraj Kandpal [Mon, 29 May 2023 11:07:39 +0000 (16:37 +0530)]
drm/i915/hdcp: Move away from master naming to arbiter

Rename variables to move away from master convention to
arbiter
%s/hdcp.master/hdcp.arbiter
%s/i915_hdcp_master/i915_hdcp_arbiter
%s/comp_master/comp_arbiter

--v2
- delete i915_hdcp_comp_master redundant declaration [Chaitanya]
- use %s/foo/bar/ format in commit message to show changes [Chaitanya]

--v3
- replace i915_hdcp_comp_master declaration with i915_hdcp_arbiter
to avoid any compile fail with old compilers [Chaitanya]

Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230529110740.1522985-3-suraj.kandpal@intel.com
13 months agodrm/i915/hdcp: Rename dev_priv to i915
Suraj Kandpal [Mon, 29 May 2023 11:07:38 +0000 (16:37 +0530)]
drm/i915/hdcp: Rename dev_priv to i915

Rename dev_priv to i915 to keep up with latest code standards.

Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230529110740.1522985-2-suraj.kandpal@intel.com
13 months agodrm/i915: Implement CTM property support for VLV
Ville Syrjälä [Thu, 13 Apr 2023 16:49:14 +0000 (19:49 +0300)]
drm/i915: Implement CTM property support for VLV

VLV has a so called "wide gamut color correction" unit (WGC).
What it is is a 3x3 matrix similar to the later CHV CGM
CSC, with less precisions/range. In fact CHV also has the WGC
but using it there doesn't really make sense when you have the
superior CGM CSC around.

Hook up the necessary stuff to expose the WGC as the CTM
crtc property.

One additional crazy idea that came to mind would be to use
the WGC as an output CSC on CHV for YCbCr output. But it
would be incompatible with the legacy LUT usage. In fact
since the WGC lacks post-offsets we'd probably have to
use the legacy LUT to do that final part of the RGB->YCbCr
conversion. Sounds doable, but perhaps not worth the hassle.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230413164916.4221-6-ville.syrjala@linux.intel.com
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
13 months agodrm/i915: Always enable CGM CSC on CHV
Ville Syrjälä [Thu, 13 Apr 2023 16:49:13 +0000 (19:49 +0300)]
drm/i915: Always enable CGM CSC on CHV

On CHV toggling the CGM CSC on/off while the pipe is running leads
to underruns. Looks like we'd have to do the toggling strictly inside
the start_of_vblank-frame_start window to avoid this, but that window
is less than a scanline so there's no way we can guarantee hitting it.

As a workaround let's just leave the CGM CSC permanently enabled.
Fortunately the CGM gamma/degamma units don't seem to suffer from
this malady.

I also tried turning off CGM unit clock gating, but that did not
help.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230413164916.4221-5-ville.syrjala@linux.intel.com
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
13 months agodrm/i915: Fix CHV CGM CSC coefficient sign handling
Ville Syrjälä [Thu, 13 Apr 2023 16:49:12 +0000 (19:49 +0300)]
drm/i915: Fix CHV CGM CSC coefficient sign handling

The CHV CGM CSC coefficients are in s4.12 two's complement
format. Fix the CTM->CGM conversion to handle that correctly
instead of pretending that the hw coefficients are also
in some sign-magnitude format.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230413164916.4221-4-ville.syrjala@linux.intel.com
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
13 months agodrm/i915: Expose crtc CTM property on ilk/snb
Ville Syrjälä [Thu, 13 Apr 2023 16:49:11 +0000 (19:49 +0300)]
drm/i915: Expose crtc CTM property on ilk/snb

The ilk/snb code is internally fully capable of handling the
CTM property, so expose it.

Note that we still choose not to expose DEGAMMA_LUT though.
The hardware is capable if degamma or gamma, but not both
simultanously due to lack of the split gamma mode. Exposing
both LUTs might encourage userspace to try enabling both
at the same time.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230413164916.4221-3-ville.syrjala@linux.intel.com
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
13 months agodrm/i915: Fix clang -Wimplicit-fallthrough in intel_async_flip_check_hw()
Nathan Chancellor [Wed, 24 May 2023 15:38:27 +0000 (08:38 -0700)]
drm/i915: Fix clang -Wimplicit-fallthrough in intel_async_flip_check_hw()

Clang warns:

  drivers/gpu/drm/i915/display/intel_display.c:6012:3: error: unannotated fall-through between switch labels [-Werror,-Wimplicit-fallthrough]
                  case I915_FORMAT_MOD_X_TILED:
                  ^
  drivers/gpu/drm/i915/display/intel_display.c:6012:3: note: insert 'break;' to avoid fall-through
                  case I915_FORMAT_MOD_X_TILED:
                  ^
                  break;
  1 error generated.

Clang is a little more pedantic than GCC, which does not warn when
falling through to a case that is just break or return. Clang's version
is more in line with the kernel's own stance in deprecated.rst, which
states that all switch/case blocks must end in either break,
fallthrough, continue, goto, or return. Add the missing break to silence
the warning.

Fixes: 937859485aef ("drm/i915: Support Async Flip on Linear buffers")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/202305241902.UvHtMoxa-lkp@intel.com/
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Closes: https://lore.kernel.org/CA+G9fYv68V3ewK0Qj-syQj7qX-hQr0H1MFL=QFNuDoE_J2Zu-g@mail.gmail.com/
Reported-by: Tom Rix <trix@redhat.com>
Closes: https://lore.kernel.org/all/20230523125116.1669057-1-trix@redhat.com/
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230524-intel_async_flip_check_hw-implicit-fallthrough-v1-1-83de89e376a1@kernel.org
13 months agodrm/i915/display: Move feature test macros to intel_display_device.h
Matt Roper [Tue, 23 May 2023 19:56:09 +0000 (12:56 -0700)]
drm/i915/display: Move feature test macros to intel_display_device.h

It makes sense to keep the display feature test macros centralized
within the display code.

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230523195609.73627-7-matthew.d.roper@intel.com
13 months agodrm/i915/display: Handle GMD_ID identification in display code
Matt Roper [Tue, 23 May 2023 19:56:08 +0000 (12:56 -0700)]
drm/i915/display: Handle GMD_ID identification in display code

For platforms with GMD_ID support (i.e., everything MTL and beyond),
identification of the display IP present should be based on the contents
of the GMD_ID register rather than a PCI devid match.

Note that since GMD_ID readout requires access to the PCI BAR, a slight
change to the driver init sequence is needed --- pci_enable_device() is
now called before i915_driver_create().

v2:
 - Fix use of uninitialized i915 pointer in error path if
   pci_enable_device() fails before the i915 device is created.  (lkp)
 - Use drm_device parameter to intel_display_device_probe.  This goes
   against i915 conventions, but since the primary goal here is to make
   it easy to call this function from other drivers (like Xe) and since
   we don't need anything from the i915 structure, this seems like an
   exception where drm_device is a more natural fit.
v3:
 - Go back do drm_i915_private for intel_display_device_probe.  (Jani)
 - Move forward decl to top of header.  (Jani)

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230523195609.73627-6-matthew.d.roper@intel.com
13 months agodrm/i915/display: Make display responsible for probing its own IP
Matt Roper [Tue, 23 May 2023 19:56:07 +0000 (12:56 -0700)]
drm/i915/display: Make display responsible for probing its own IP

Rather than selecting the display IP and feature flags at the same time
the general PCI probing happens, move this step into the display code
itself so that it can be more easily re-used outside of i915 (i.e., by
the Xe driver).

v2:
 - Make intel_display_device_probe() always return a non-NULL pointer
   and simplify copying of runtime_defaults.  (Andrzej)
v3:
 - Redefine INTEL_VGA_DEVICE/INTEL_QUANTA_DEVICE to eliminate a cast and
   an include of linux/mod_devicetable.h.  (Jani)
 - Keep explicit memcpy for runtime defaults.  (Jani)

Cc: Andrzej Hajda <andrzej.hajda@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230523195609.73627-5-matthew.d.roper@intel.com
13 months agodrm/i915/display: Move display runtime info to display structure
Matt Roper [Tue, 23 May 2023 19:56:06 +0000 (12:56 -0700)]
drm/i915/display: Move display runtime info to display structure

Move the runtime info specific to display into display-specific
structures as has already been done with the constant display info.

v2:
 - Rename __runtime to __runtime_defaults for more clarity on the
   purpose.  (Andrzej)
 - Move introduction of DISPLAY_INFO() to previous patch.  (Andrzej)
 - Drop NO_DISPLAY macro.  (Andrzej)
v3:
 - Use "{}" instead of "{ 0 }" for empty struct init.  (Jani)

Cc: Andrzej Hajda <andrzej.hajda@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230523195609.73627-4-matthew.d.roper@intel.com
13 months agodrm/i915: Convert INTEL_INFO()->display to a pointer
Matt Roper [Tue, 23 May 2023 19:56:05 +0000 (12:56 -0700)]
drm/i915: Convert INTEL_INFO()->display to a pointer

Rather than embeddeding the display's device info within the main device
info structure, just provide a pointer to the display-specific
structure.  This is in preparation for moving the display device info
definitions into the display code itself and for eventually allowing the
pointer to be assigned at runtime on platforms that use GMD_ID for
device identification.

In the future, this will also eventually allow the same display device
info structures to be used outside the current i915 code (e.g., from the
Xe driver).

v2:
 - Move introduction of DISPLAY_INFO() to this patch.  (Andrzej)
v3:
 - Also use DISPLAY_INFO() in intel_display_reg_defs.h.  (Andrzej)
 - Use "{}" instead of "{ 0 }" for empty struct init.  (Jani)

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Acked-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230523195609.73627-3-matthew.d.roper@intel.com
13 months agodrm/i915/display: Move display device info to header under display/
Matt Roper [Tue, 23 May 2023 19:56:04 +0000 (12:56 -0700)]
drm/i915/display: Move display device info to header under display/

Moving display-specific substructure definitions will help keep display
more self-contained and make it easier to re-use in other drivers (i.e.,
Xe) in the future.

Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230523195609.73627-2-matthew.d.roper@intel.com
13 months agodrm/i915: Replace all non-returning strlcpy with strscpy
Azeem Shaikh [Mon, 22 May 2023 15:52:28 +0000 (15:52 +0000)]
drm/i915: Replace all non-returning strlcpy with strscpy

strlcpy() reads the entire source buffer first.
This read may exceed the destination size limit.
This is both inefficient and can lead to linear read
overflows if a source string is not NUL-terminated [1].
In an effort to remove strlcpy() completely [2], replace
strlcpy() here with strscpy().
No return values were used, so direct replacement is safe.

[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#strlcpy
[2] https://github.com/KSPP/linux/issues/89

Signed-off-by: Azeem Shaikh <azeemshaikh38@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230522155228.2336755-1-azeemshaikh38@gmail.com
14 months agodrm/i915: Wait for active retire before i915_active_fini()
Nirmoy Das [Mon, 22 May 2023 12:42:05 +0000 (14:42 +0200)]
drm/i915: Wait for active retire before i915_active_fini()

i915_active_fini() finalizes the debug object, which can occur before
the active retires and deactivates the debug object. Wait for one
final time before calling i915_active_fini();

Closes:: https://gitlab.freedesktop.org/drm/intel/-/issues/8311
Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230522124205.368-1-nirmoy.das@intel.com
14 months agodrm/i915: Support Async Flip on Linear buffers
Arun R Murthy [Tue, 6 Sep 2022 04:18:06 +0000 (09:48 +0530)]
drm/i915: Support Async Flip on Linear buffers

Starting from Gen12 Async Flip is supported on linear buffers.
This patch enables support for async on linear buffer.

UseCase: In Hybrid graphics, for hardware unsupported pixel formats it
will be converted to linear memory and then composed.

v2: Added use case
v3: Added FIXME for ICL indicating the restrictions

Signed-off-by: Arun R Murthy <arun.r.murthy@intel.com>
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220906041806.4095575-1-arun.r.murthy@intel.com
14 months agodrm/i915: constify pointers to hwmon_channel_info
Krzysztof Kozlowski [Thu, 11 May 2023 17:54:46 +0000 (19:54 +0200)]
drm/i915: constify pointers to hwmon_channel_info

Statically allocated array of pointers to hwmon_channel_info can be made
const for safety.

Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230511175446.282041-1-krzysztof.kozlowski@linaro.org
14 months agodrm/display/dsc: add YCbCr 4:2:2 and 4:2:0 RC parameters
Dmitry Baryshkov [Wed, 17 May 2023 10:28:07 +0000 (13:28 +0300)]
drm/display/dsc: add YCbCr 4:2:2 and 4:2:0 RC parameters

Include RC parameters for YCbCr 4:2:2 and 4:2:0 configurations.

Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230517102807.2181589-9-dmitry.baryshkov@linaro.org
Acked-by: Dave Airlie <airlied@redhat.com>
14 months agodrm/display/dsc: include the rest of pre-SCR parameters
Dmitry Baryshkov [Wed, 17 May 2023 10:28:06 +0000 (13:28 +0300)]
drm/display/dsc: include the rest of pre-SCR parameters

DSC model contains pre-SCR RC parameters for other bpp/bpc combinations,
include them here for completeness. The values were generated from the
'pre_scr_cfg_files_for_reference' files found in DSC models 20210623.
The same fileset is a part of DSC model 20161212.

Reviewed-by: Jessica Zhang <quic_jesszhan@quicinc.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230517102807.2181589-8-dmitry.baryshkov@linaro.org
Acked-by: Dave Airlie <airlied@redhat.com>
14 months agodrm/display/dsc: split DSC 1.2 and DSC 1.1 (pre-SCR) parameters
Dmitry Baryshkov [Wed, 17 May 2023 10:28:05 +0000 (13:28 +0300)]
drm/display/dsc: split DSC 1.2 and DSC 1.1 (pre-SCR) parameters

The array of rc_parameters contains a mixture of parameters from DSC 1.1
and DSC 1.2 standards. Split these tow configuration arrays in
preparation to adding more configuration data.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Suraj Kandpal
Reviewed-by: Suraj Kandpal
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230517102807.2181589-7-dmitry.baryshkov@linaro.org
Acked-by: Dave Airlie <airlied@redhat.com>
14 months agodrm/display/dsc: use flat array for rc_parameters lookup
Dmitry Baryshkov [Wed, 17 May 2023 10:28:04 +0000 (13:28 +0300)]
drm/display/dsc: use flat array for rc_parameters lookup

Next commits are going to add support for additional RC parameter lookup
tables. These tables are going to use different bpp/bpc combinations,
thus it makes little sense to keep the 2d array for RC parameters.
Switch to using the flat array.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230517102807.2181589-6-dmitry.baryshkov@linaro.org
Acked-by: Dave Airlie <airlied@redhat.com>
14 months agodrm/i915/dsc: stop using interim structure for calculated params
Dmitry Baryshkov [Wed, 17 May 2023 10:28:03 +0000 (13:28 +0300)]
drm/i915/dsc: stop using interim structure for calculated params

Stop using an interim structure rc_parameters for storing calculated
params and then setting drm_dsc_config using that structure. Instead put
calculated params into the struct drm_dsc_config directly.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230517102807.2181589-5-dmitry.baryshkov@linaro.org
14 months agodrm/i915/dsc: move DSC tables to DRM DSC helper
Dmitry Baryshkov [Wed, 17 May 2023 10:28:02 +0000 (13:28 +0300)]
drm/i915/dsc: move DSC tables to DRM DSC helper

Move DSC RC tables to DRM DSC helper. No additional code changes
and/or cleanups are a part of this commit, it will be cleaned up in the
followup commits.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230517102807.2181589-4-dmitry.baryshkov@linaro.org
Acked-by: Dave Airlie <airlied@redhat.com>
14 months agodrm/i915/dsc: move rc_buf_thresh values to common helper
Dmitry Baryshkov [Wed, 17 May 2023 10:28:01 +0000 (13:28 +0300)]
drm/i915/dsc: move rc_buf_thresh values to common helper

The rc_buf_thresh values are common to all DSC implementations. Move
them to the common helper together with the code to propagate them to
the drm_dsc_config.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Marijn Suijten <marijn.suijten@somainline.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230517102807.2181589-3-dmitry.baryshkov@linaro.org
Acked-by: Dave Airlie <airlied@redhat.com>
14 months agodrm/i915/dsc: change DSC param tables to follow the DSC model
Dmitry Baryshkov [Wed, 17 May 2023 10:28:00 +0000 (13:28 +0300)]
drm/i915/dsc: change DSC param tables to follow the DSC model

After cross-checking DSC models (201509142016121220210623) change
values in rc_parameters tables to follow config files present inside
the DSC model. Handle two places, where i915 tables diverged from the
model, by patching the rc values in the code.

Note: I left one case uncorrected, 8bpp/10bpc/range_max_qp[0], because
the table in the VESA DSC 1.1 sets it to 4.

Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230517102807.2181589-2-dmitry.baryshkov@linaro.org
14 months agodrm/i915/hdmi: C20 computed PLL frequencies
Clint Taylor [Mon, 15 May 2023 23:17:25 +0000 (16:17 -0700)]
drm/i915/hdmi: C20 computed PLL frequencies

Use algorithm to generate HDMI C20 PLL clock frequencies.

v2: checkpatch fixes

BSPEC: 64568
Cc: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Cc: Mika Kahola <mika.kahola@intel.com>
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Signed-off-by: Clint Taylor <clinton.a.taylor@intel.com>
[mattrope: Wrapped one overly long line]
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230515231725.3815199-3-clinton.a.taylor@intel.com
14 months agodrm/i915: Add 16bit register/mask operators
Clint Taylor [Mon, 15 May 2023 23:17:24 +0000 (16:17 -0700)]
drm/i915: Add 16bit register/mask operators

Add the support macros to define/extract bits as 16bits.

v2: checkpatch fixes
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Signed-off-by: Clint Taylor <clinton.a.taylor@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230515231725.3815199-2-clinton.a.taylor@intel.com
14 months agodrm/i915/mtl: Fix expected reg value for Thunderbolt PLL disabling
Mika Kahola [Fri, 12 May 2023 12:00:03 +0000 (15:00 +0300)]
drm/i915/mtl: Fix expected reg value for Thunderbolt PLL disabling

While disabling Thunderbolt PLL, we request PLL to be stopped and
wait for ACK bit to be cleared. The expected value should be '0'
instead of '~XELPDP_TBT_CLOCK_ACK' or otherwise we incorrectly
receive dmesg warn "PHY PLL not unlocked in 10us".

Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230512120003.587360-1-mika.kahola@intel.com
14 months agoMerge drm/drm-next into drm-intel-next
Rodrigo Vivi [Wed, 17 May 2023 13:30:24 +0000 (09:30 -0400)]
Merge drm/drm-next into drm-intel-next

Backmerge to get some hwmon dependencies.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
14 months agodrm/i915: tweak language in fastset pipe config compare logging
Jani Nikula [Tue, 16 May 2023 09:44:06 +0000 (12:44 +0300)]
drm/i915: tweak language in fastset pipe config compare logging

The "fastset mismatch" debug logging has been slightly confusing,
leading people to believe some error happened. Change it to the more
informative "fastset requirement not met", and add a final message about
this leading to full modeset.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Acked-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230516094406.2675307-1-jani.nikula@intel.com
14 months agodrm/i915: fix intel_display_irq.c include order
Jani Nikula [Tue, 16 May 2023 12:29:26 +0000 (15:29 +0300)]
drm/i915: fix intel_display_irq.c include order

I meant to sort the includes before submitting commit 2b874a027810
("drm/i915/irq: split out display irq handling") but forgot, and it
wasn't noticed in review either. Sort the includes.

Cc: Gustavo Sousa <gustavo.sousa@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230516122926.2720581-1-jani.nikula@intel.com
14 months agodrm/i915/tc: Reset TypeC PHYs left enabled in DP-alt mode after the sink disconnects
Imre Deak [Fri, 12 May 2023 19:55:13 +0000 (22:55 +0300)]
drm/i915/tc: Reset TypeC PHYs left enabled in DP-alt mode after the sink disconnects

If the output on a DP-alt link with its sink disconnected is kept
enabled for too long (about 20 sec), then some IOM/TCSS firmware timeout
will cause havoc on the PCI bus, at least for other GFX devices on it
which will stop powering up. Since user space is not guaranteed to do a
disabling modeset in time, switch such disconnected but active links to
TBT mode - which is without such shortcomings - with a 2 second delay.

If the above condition is detected already during the driver load/system
resume sanitization step disable the output instead, as at that point no
user space or kernel client depends on a consistent output state yet and
because subsequent atomic modeset on such connectors - without the
actual sink capabilities available - can fail.

An active/disconnected port as above will also block the HPD status of
other active/disconnected ports to get updated (stuck in the connected
state), until the former port is disabled, its PHY is disconnected and
a ~10 ms delay has elapsed. This means the link state for all TypeC
ports/CRTCs must be rechecked after a CRTC is disabled due to the above
reason. For this disconnect the PHY synchronously after the CRTC/port is
disabled and recheck all CRTCs for the above condition whenever such a
port is disabled.

To account for a race condition during driver loading where the sink is
disconnected after the above sanitization step and before the HPD
interrupts get enabled, do an explicit check/link reset if needed from
the encoder's late_register hook, which is called after the HPD
interrupts are enabled already.

v2:
- Handle an active/disconnected port blocking the HPD state update of
  another active/disconnected port.
- Cancel the delayed work resetting the link also from the encoder
  enable/suspend/shutdown hooks.
- Rebase on the earlier intel_modeset_lock_ctx_retry() addition,
  fixing here the missed atomic state reset in case of a retry.
- Fix handling of an error return from intel_atomic_get_crtc_state().
- Recheck if the port needs to be reset after all the atomic state
  is locked and async commits are waited on.

v3:
- Add intel_crtc_needs_link_reset(), instead of open-coding it,
  keep intel_crtc_has_encoders(). (Ville)
- Fix state dumping and use a bitmask to track disabled CRTCs in
  intel_sanitize_all_crtcs(). (Ville)
- Set internal in intel_atomic_state right after allocating it.
  (Ville)
- Recheck all CRTCs (not yet force-disabled) after a CRTC is
  force-disabled for any reason (not only due to a link state)
  in intel_sanitize_all_crtcs().
- Reduce delay after CRTC disabling to 20ms, and use the simpler
  msleep().
- Clarify code comment about HPD behaviour in
  intel_sanitize_all_crtcs().
- Move all the TC link reset logic to intel_tc.c .
- Cancel the link reset work synchronously during system suspend,
  driver unload and shutdown.

v4:
- Rebased on previous patch, which allows calling the TC port
  suspend/cleanup handlers without modeset locks held; remove the
  display driver suspended assert from the link reset work
  accordingly.

v5: (Ville)
- Remove reset work canceling from intel_ddi_pre_pll_enable().
- Track a crtc vs. pipe mask in intel_sanitize_all_crtcs().
- Add reset_link_commit() to clarify the
  intel_modeset_lock_ctx_retry loop.

Cc: Kai-Heng Feng <kai.heng.feng@canonical.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Tested-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/5860
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230512195513.2699-2-imre.deak@intel.com
14 months agodrm/i915/tc: Call TypeC port flush_work/cleanup without modeset locks held
Imre Deak [Fri, 12 May 2023 19:55:12 +0000 (22:55 +0300)]
drm/i915/tc: Call TypeC port flush_work/cleanup without modeset locks held

Call the TypeC port flush_work and cleanup handlers without the modeset
locks held. These don't require the locks, as the work takes - as it
should be able to at any point in time - any locks it needs and by the
time cleanup is called and after cleanup returns the encoder is not in
use.

This is required by the next patch canceling a TypeC port work
synchronously during encoder suspend and shutdown, where the work can
take modeset locks as well, hence the canceling must be done without
holding the locks.

I also considered moving the modeset locking down to each encoder
suspend()/shutdown() hook instead, however locking the full modeset
state for each encoder separately would be odd, and the bigger change -
affecting all encoders - is beyond the scope of this patchset.

v2:
- Add a TODO: comment to remove modeset locks if no encoder depends
  on this. (Ville)

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230512195513.2699-1-imre.deak@intel.com
14 months agodrm/i915: Factor out a helper for handling atomic modeset locks/state
Imre Deak [Wed, 10 May 2023 10:31:29 +0000 (13:31 +0300)]
drm/i915: Factor out a helper for handling atomic modeset locks/state

This patch simplifying the handling of modeset locks and atomic state
for an atomic commit is based on

https://lore.kernel.org/all/20210715184954.7794-2-ville.syrjala@linux.intel.com/

adding the helper to i915. I find this approach preferrable than
open-coding the corresponding steps (fixed for me an atomic
state reset during a DEADLK retry, which I missed in the open-coded
version) and also better than the existing
DRM_MODESET_LOCK_ALL_BEGIN/END macros for the reasons described in the
above original patchset.

This change takes the helper into use only for atomic commits during DDI
hotplug handling, as a preparation for a follow-up patch adding a
similar commit started from the same spot. Other places doing a
driver-internal atomic commit is to be converted by a follow-up
patchset.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230510103131.1618266-13-imre.deak@intel.com
14 months agodrm/i915/dp: Factor out intel_dp_get_active_pipes()
Imre Deak [Wed, 10 May 2023 10:31:28 +0000 (13:31 +0300)]
drm/i915/dp: Factor out intel_dp_get_active_pipes()

Factor out a helper used by a follow up patch to reset an active DP
link.

No functional changes.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230510103131.1618266-12-imre.deak@intel.com
14 months agodrm/i915/dp: Prevent link training fallback on disconnected port
Imre Deak [Wed, 10 May 2023 10:31:27 +0000 (13:31 +0300)]
drm/i915/dp: Prevent link training fallback on disconnected port

Prevent downgrading the link training maximum lane count/rate if the
sink is disconnected - and so the link training failure is expected. In
such cases modeset failures due to the reduced max link params would be
just confusing for user space (instead of which the correct thing it
should act on is the sink disconnect signaled by a hotplug event,
requiring a disabling modeset).

v2:
- Check the actual HPD state to handle the forced connector state case.
  (Vinod)

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Vinod Govindapillai <vinod.govindapillai@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> (v1)
Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230510103131.1618266-11-imre.deak@intel.com
14 months agodrm/i915/dp: Convert link training error to debug message on disconnected sink
Imre Deak [Wed, 10 May 2023 10:31:26 +0000 (13:31 +0300)]
drm/i915/dp: Convert link training error to debug message on disconnected sink

If a sink is disconnected it's expected that link training actions will
fail on it, so downgrade the error messages about such actions to be a
debug message. Such - expected - link training failures are more
frequent after a follow up patch, after which an active TypeC link is
reset after the sink is disconnected which also involves a link
training.

v2:
- Check the actual HPD state to handle the forced connector state case.
  (Vinod)

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Vinod Govindapillai <vinod.govindapillai@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> (v1)
Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230510103131.1618266-10-imre.deak@intel.com
14 months agodrm/i915/dp: Add link training debug and error printing helpers
Imre Deak [Wed, 10 May 2023 10:31:25 +0000 (13:31 +0300)]
drm/i915/dp: Add link training debug and error printing helpers

Add functions for printing link training debug and error messages, both
to prepare for the next patch, which downgrades an error to a debug
message if the sink is disconnected and to remove some code duplication.

v2: (Ville)
- Always print the connector prefix.
- Preserve the drm_dbg_kms() debug category.
v3:
- Keep printing the name of functions calling the helpers. (Jani)

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com> (v2)
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230510103131.1618266-9-imre.deak@intel.com
14 months agodrm/i915: Add support for disabling any CRTCs during HW readout/sanitization
Imre Deak [Wed, 10 May 2023 10:31:24 +0000 (13:31 +0300)]
drm/i915: Add support for disabling any CRTCs during HW readout/sanitization

During HW readout/sanitization CRTCs can be disabled only if they don't
have an attached encoder (and so the encoder disable hooks don't need to
be called). An upcoming patch will need to disable CRTCs also with an
attached encoder, so add support for this.

For bigjoiner configs the encoder disabling hooks require the slave CRTC
states, so add these too to the atomic state. Since the connector atomic
state is already up-to-date when the CRTC is disabled the connector
state needs to be updated (reset) after the CRTC is disabled, make this
so. Follow the proper order of disabling first all bigjoiner slaves,
then any port synced CRTC slaves followed by the CRTC originally
requested to be disabled.

v2:
- Fix calculating the bigjoiner_masters mask in a port sync config,
  (Ville)
- Keep _noatomic suffix in intel_crtc_disable_noatomic(). (Ville)
- Rebase on full CRTC state reset in this patchset, not requiring
  resetting the bigjoiner state separately and (instead) resetting
  the full atomic CRTC and related global state after all linked
  pipes got disabled.
- Disable portsync slaves before a portsync master.
- Disable a portsync master if a linked portsync slave is disabled.

v3: (Ville)
- Use s/u32/u8 for transcoder and pipe masks.
- Use is_power_of_2() instead of hweight()==1.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230510103131.1618266-8-imre.deak@intel.com
14 months agodrm/i915: Factor out set_encoder_for_connector()
Imre Deak [Wed, 10 May 2023 10:31:23 +0000 (13:31 +0300)]
drm/i915: Factor out set_encoder_for_connector()

Factor out a function setting the encoder and CRTC in the connector
atomic state, required by a follow up patch.

No functional changes.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230510103131.1618266-7-imre.deak@intel.com
14 months agodrm/i915: Separate intel_crtc_disable_noatomic_begin/complete()
Imre Deak [Wed, 10 May 2023 10:31:22 +0000 (13:31 +0300)]
drm/i915: Separate intel_crtc_disable_noatomic_begin/complete()

Split calling the CRTC/encoder disabling hooks and updating the CRTC and
DPLL object states from updating the CRTC and atomic state and other
global state (BW, CDCLK, DBUF) into separate functions. When disabling a
bigjoiner configuration the latter step can be done only after all the
linked pipes are disabled, so this change prepares for that.

No functional changes.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230510103131.1618266-6-imre.deak@intel.com
14 months agodrm/i915: Update connector atomic state before crtc sanitize-disabling
Imre Deak [Wed, 10 May 2023 10:31:21 +0000 (13:31 +0300)]
drm/i915: Update connector atomic state before crtc sanitize-disabling

During HW state readout/sanitization an up-to-date connector atomic
state will be required by a follow-up patch, which can disable CRTCs
with an encoder (and calling the correct encoder hooks happens via the
connector atomic state encoder pointer). So update the connector state
already before the CRTC sanitize/disable step. For now this doesn't make
a difference, since intel_modeset_update_connector_atomic_state() will
update/enable the atomic state only for connectors that have an enabled
encoder/CRTC. Such CRTCs/encoders will not be affected by
intel_sanitize_crtc().

v2: Add comment about why the connector state needs to be up-to-date.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230510103131.1618266-5-imre.deak@intel.com
14 months agodrm/i915: Make the CRTC state consistent during sanitize-disabling
Imre Deak [Wed, 10 May 2023 10:31:20 +0000 (13:31 +0300)]
drm/i915: Make the CRTC state consistent during sanitize-disabling

Make sure that the CRTC state is reset correctly, as expected after
disabling the CRTC.

In particular this change will:
- Zero all the CSC blob pointers after intel_crtc_free_hw_state()
  has freed them.
- Zero the shared DPLL and port PLL pointers and clear the
  corresponding CRTC reference flag in the PLL state.
- Reset all the transcoder and pipe fields.

v2:
- Reset fully the CRTC state. (Ville)
- Clear pipe active flags in the DPLL state.

v3:
- Clear only the CRTC reference flag and add a helper for this.
  (Ville)

v4:
- Rebased on previous patch, adding
  intel_unreference_shared_dpll_crtc() separately. (Ville)

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230510103131.1618266-4-imre.deak@intel.com
14 months agodrm/i915: Add helpers to reference/unreference a DPLL for a CRTC
Imre Deak [Wed, 10 May 2023 10:31:19 +0000 (13:31 +0300)]
drm/i915: Add helpers to reference/unreference a DPLL for a CRTC

Add helpers to reference/unreference a shared DPLL tracking the use of
it by a given CRTC.

This prepares for the next patch, which unreferences a DPLL during CRTC
HW-readout/sanitization.

Suggested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230510103131.1618266-3-imre.deak@intel.com
14 months agodrm/i915: Fix PIPEDMC disabling for a bigjoiner configuration
Imre Deak [Wed, 10 May 2023 10:31:18 +0000 (13:31 +0300)]
drm/i915: Fix PIPEDMC disabling for a bigjoiner configuration

For a bigjoiner configuration display->crtc_disable() will be called
first for the slave CRTCs and then for the master CRTC. However slave
CRTCs will be actually disabled only after the master CRTC is disabled
(from the encoder disable hooks called with the master CRTC state).
Hence the slave PIPEDMCs can be disabled only after the master CRTC is
disabled, make this so.

intel_encoders_post_pll_disable() must be called only for the master
CRTC, as for the other two encoder disable hooks. While at it fix this
up as well. This didn't cause a problem, since
intel_encoders_post_pll_disable() will call the corresponding hook only
for an encoder/connector connected to the given CRTC, however slave
CRTCs will have no associated encoder/connector.

Fixes: 3af2ff0840be ("drm/i915: Enable a PIPEDMC whenever its corresponding pipe is enabled")
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230510103131.1618266-2-imre.deak@intel.com
14 months agodrm/i915/hdcp: Fill hdcp2_streamid_type and k in appropriate places
Suraj Kandpal [Mon, 15 May 2023 11:27:26 +0000 (16:57 +0530)]
drm/i915/hdcp: Fill hdcp2_streamid_type and k in appropriate places

stream_id and k(no of streams) should be set in
intel_hdcp_set_content_streams. stream_type should be set in
intel_hdcp_required_content_stream.

--v5
-add missing stream_id assignment [Ankit]

Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230515112726.689116-1-suraj.kandpal@intel.com
14 months agodrm/i915/hdcp: Fix modeset locking issue in hdcp mst
Suraj Kandpal [Mon, 15 May 2023 10:32:24 +0000 (16:02 +0530)]
drm/i915/hdcp: Fix modeset locking issue in hdcp mst

Since topology state is being added to drm_atomic_state now all
drm_modeset_lock required are being taken from core. This raises
an issue when we try to loop over connector and assign vcpi id to
our streams as we did not have atomic state to derive acquire_ctx
from. We fill in stream info if dpmst encoder is found before
enabling hdcp. intel_hdcp_required_stream will be broken which
will only set the content type.

--v2
-move prepare streams to beginning of intel_hdcp_enable to avoid
checking of mst encoder twice [Ankit]

--v3
-break intel_required_content_stream to two part and set the stream_id
at the beginning [Ankit]

--v4
-change return types for intel_hdcp_prepare_stream and
intel_hdcp_required content_stream [Ankit]
-rename intel_hdcp_set_content_stream to
intel_hdcp_set_stream [Ankit]
-place intel_hdcp_set_streams above caller [Ankit]

Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230515103225.688830-4-suraj.kandpal@intel.com
14 months agodrm/i915/hdcp: Remove enforce_type0 check outside loop
Suraj Kandpal [Mon, 15 May 2023 10:32:23 +0000 (16:02 +0530)]
drm/i915/hdcp: Remove enforce_type0 check outside loop

Remove enforce_type0 check outside the loop since it
does not make sense to keep it there as we use the same
digport and continue checking it again and again

Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230515103225.688830-3-suraj.kandpal@intel.com
14 months agodrm/i915/hdcp: add intel_atomic_state argument to hdcp_enable function
Suraj Kandpal [Mon, 15 May 2023 10:32:22 +0000 (16:02 +0530)]
drm/i915/hdcp: add intel_atomic_state argument to hdcp_enable function

Pass all the parameter in intel_encoder->enable()
to intel_hdcp_enable as we need intel_atomic_state
later down to get acquire_ctx.

Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230515103225.688830-2-suraj.kandpal@intel.com
14 months agodrm/i915/irq: split out display irq handling
Jani Nikula [Mon, 15 May 2023 10:17:38 +0000 (13:17 +0300)]
drm/i915/irq: split out display irq handling

Split (non-hotplug) display irq handling out of i915_irq.[ch] into
display/intel_display_irq.[ch].

v3:
- Preserve [I915_MAX_PIPES] harder (kernel test robot)

v2:
- Rebase
- Preserve [I915_MAX_PIPES] in functions (kernel test robot)

Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230515101738.2399816-3-jani.nikula@intel.com
14 months agodrm/i915/irq: split out hotplug irq handling
Jani Nikula [Mon, 15 May 2023 10:17:37 +0000 (13:17 +0300)]
drm/i915/irq: split out hotplug irq handling

Split hotplug irq handling out of i915_irq.[ch] into
display/intel_hotplug_irq.[ch].

The line between the new intel_hotplug_irq.[ch] and the existing
intel_hotplug.[ch] needs further clarification, but the first step is to
move the stuff out of i915_irq.[ch].

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230515101738.2399816-2-jani.nikula@intel.com
14 months agodrm/i915/irq: convert gen8_de_irq_handler() to void
Jani Nikula [Mon, 15 May 2023 10:17:36 +0000 (13:17 +0300)]
drm/i915/irq: convert gen8_de_irq_handler() to void

The return value is not used for anything.

Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230515101738.2399816-1-jani.nikula@intel.com
14 months agodrm/i915/display: add i915 parameter to I915_STATE_WARN()
Jani Nikula [Fri, 12 May 2023 18:16:58 +0000 (21:16 +0300)]
drm/i915/display: add i915 parameter to I915_STATE_WARN()

Add i915 parameter to I915_STATE_WARN() and use device based logging.

Done using cocci + hand edited where there was no i915 local variable
ready.

v2: avoid null deref in verify_connector_state()

Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230512181658.1735594-1-jani.nikula@intel.com
14 months agodrm/i915/display: remove I915_STATE_WARN_ON()
Jani Nikula [Fri, 12 May 2023 11:04:43 +0000 (14:04 +0300)]
drm/i915/display: remove I915_STATE_WARN_ON()

Remove the unused macro.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230512110444.1448231-3-jani.nikula@intel.com
14 months agodrm/i915/crtc: replace I915_STATE_WARN_ON() with I915_STATE_WARN()
Jani Nikula [Fri, 12 May 2023 11:04:42 +0000 (14:04 +0300)]
drm/i915/crtc: replace I915_STATE_WARN_ON() with I915_STATE_WARN()

Describe the assertion better.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230512110444.1448231-2-jani.nikula@intel.com
14 months agodrm/i915/dpll: drop a useless I915_STATE_WARN_ON()
Jani Nikula [Fri, 12 May 2023 11:04:41 +0000 (14:04 +0300)]
drm/i915/dpll: drop a useless I915_STATE_WARN_ON()

In general, we don't do assertions that a function gets called on the
right platforms, and if we did, it should not be a state warn.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230512110444.1448231-1-jani.nikula@intel.com
14 months agodrm/i915/mtl: Add handling for MTL ccs modifiers
Juha-Pekka Heikkila [Sun, 14 May 2023 18:42:40 +0000 (21:42 +0300)]
drm/i915/mtl: Add handling for MTL ccs modifiers

Add Tile4 ccs modifiers w/ auxbuffer handling

Implement Wa_14017240301

Bspec: 49251, 49252, 49253
Signed-off-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Reviewed-by: Matt Atwood <matthew.s.atwood@intel.com>
Reviewed-by: Mika Kahola <mika.kahola@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230514184240.6184-2-juhapekka.heikkila@gmail.com
14 months agodrm/fourcc: define Intel Meteorlake related ccs modifiers
Juha-Pekka Heikkila [Sun, 14 May 2023 18:42:39 +0000 (21:42 +0300)]
drm/fourcc: define Intel Meteorlake related ccs modifiers

Add Tile4 type ccs modifiers with aux buffer needed for MTL

Bspec: 49251, 49252, 49253
Cc: dri-devel@lists.freedesktop.org
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Signed-off-by: Juha-Pekka Heikkila <juhapekka.heikkila@gmail.com>
Reviewed-by: Matt Atwood <matthew.s.atwood@intel.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230514184240.6184-1-juhapekka.heikkila@gmail.com
14 months agodrm/i915/bios: add helper for reading SPI
Jani Nikula [Fri, 12 May 2023 11:14:46 +0000 (14:14 +0300)]
drm/i915/bios: add helper for reading SPI

Add helper for reading SPI to not duplicate the write&read combo
everywhere.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230512111446.1524038-1-jani.nikula@intel.com
14 months agodrm/i915/hdcp: Check if media_gt exists
Suraj Kandpal [Fri, 5 May 2023 04:15:12 +0000 (09:45 +0530)]
drm/i915/hdcp: Check if media_gt exists

Check if media_gt exists if we are using gsc cs

--v2
-correct typo [Ankit]
-assign gsc variable if gt exists [Ankit]

--v3
-declare gsc and gt variables in if block [Ankit]

--v4
-add fixes tag [Ankit]

Fixes: 883631771038 ("drm/i915/mtl: Add HDCP GSC interface")
Cc: Tomas Winkler <tomas.winkler@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Uma Shankar <uma.shankar@intel.com>
Cc: Anshuman Gupta <anshuman.gupta@intel.com>
Cc: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230505041512.585486-1-suraj.kandpal@intel.com
14 months agodrm/i915/gt: drop dependency on VLV_DISPLAY_BASE
Jani Nikula [Thu, 11 May 2023 15:21:53 +0000 (18:21 +0300)]
drm/i915/gt: drop dependency on VLV_DISPLAY_BASE

CHV_FUSE_GT (0x182168) is purely about GT fuses, therefore belongs in
intel_gt_regs.h, is in the gcfgmmio unit, but is technically in the VLV
display base area.

Add VLV_GUNIT_BASE to drop dependency on VLV_DISPLAY_BASE and thus
display/intel_display_reg_defs.h in intel_gt_regs.h.

v2: Add VLV_GUNIT_BASE (Ville)

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230511152153.986676-1-jani.nikula@intel.com
14 months agodrm/i915/irq: relocate gmbus and dp aux irq handlers
Jani Nikula [Thu, 4 May 2023 16:57:29 +0000 (19:57 +0300)]
drm/i915/irq: relocate gmbus and dp aux irq handlers

Move gmbus and dp aux irq handlers to their respective files. It should
be up to them what to do with the irq, not the generic irq code.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/e825385fc03cb3d53c1f0b66712eea42dad69d59.1683219363.git.jani.nikula@intel.com
14 months agodrm/i915: Nuke intel_bios_is_port_dp_dual_mode()
Ville Syrjälä [Tue, 9 May 2023 16:02:06 +0000 (19:02 +0300)]
drm/i915: Nuke intel_bios_is_port_dp_dual_mode()

Now that we have encoder->devdata everwhere we don't need
the intel_bios_is_port_dp_dual_mode() wrapper any more.

And while at it let's include it in the child device log
dump as well since the logic in there is a bit more complex
than just DP&&HDMI.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230509160206.25971-3-ville.syrjala@linux.intel.com
Acked-by: Gustavo Sousa <gustavo.sousa@intel.com>
14 months agodrm/i915: Flip VBT DDC pin maps around
Ville Syrjälä [Tue, 9 May 2023 16:02:05 +0000 (19:02 +0300)]
drm/i915: Flip VBT DDC pin maps around

Swap the roles of the index vs. value for the VBT DDC pin
mapping tables. This is not strictly necessary for DDC pins
but it will make this work exactly like the AUX CH mapping
tables where the role reversal is necessary (or at least makes
things easier). Consistency is good.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230509160206.25971-2-ville.syrjala@linux.intel.com
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
14 months agodrm/i915: Split map_aux_ch() into per-platform arrays
Ville Syrjälä [Tue, 9 May 2023 16:02:04 +0000 (19:02 +0300)]
drm/i915: Split map_aux_ch() into per-platform arrays

The big switch+if statement mess in map_aux_ch() is
illegible. Split up into cleaner per-platform arrays
like we already have for the gmbus pins.

We use enum aux_ch as the index and the VBT thing as
the value. Slightly non-intuitive perhaps but if we
did it the other way around we'd have problems with
AUX_CH_A being zero, and thus any non-populated
element would look like AUX_CH_A.

v2: flip the index vs. value around

TODO: Didn't bother with the platform variants beyond the
      ones that really need remapping, which means if the
      VBT is bogus we end up with a nonexistent aux ch.
      Might be nice to check this a bit better.
      Yet another bitmask in device info?

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230509160206.25971-1-ville.syrjala@linux.intel.com
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
14 months agodrm/i915: Use REG_BIT() & co. for AUX CH registers
Ville Syrjälä [Tue, 9 May 2023 17:14:11 +0000 (20:14 +0300)]
drm/i915: Use REG_BIT() & co. for AUX CH registers

Modernize the DP AUX CH register definitions with REG_BIT() & co.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230509171411.7184-1-ville.syrjala@linux.intel.com
Reviewed-by: Jouni Högander <jouni.hogander@intel.com>
14 months agodrm/i915: Define more PS_CTRL bits
Ville Syrjälä [Wed, 26 Apr 2023 13:50:19 +0000 (16:50 +0300)]
drm/i915: Define more PS_CTRL bits

To avoid annoying spec lookups let's define more PS_CTRL
bits in the header.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230426135019.7603-8-ville.syrjala@linux.intel.com
Reviewed-by: Luca Coelho <luciano.coelho@intel.com>
14 months agodrm/i915/hdcp: drop display/ prefix from include
Jani Nikula [Thu, 11 May 2023 08:55:53 +0000 (11:55 +0300)]
drm/i915/hdcp: drop display/ prefix from include

The display prefix is unnecessary within the display sub-directory.

Cc: Alan Previn <alan.previn.teres.alexis@intel.com>
Cc: Suraj Kandpal <suraj.kandpal@intel.com>
Cc: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230511085553.799321-1-jani.nikula@intel.com
14 months agodrm/i915: taint kernel when force probing unsupported devices
Jani Nikula [Thu, 4 May 2023 10:35:08 +0000 (13:35 +0300)]
drm/i915: taint kernel when force probing unsupported devices

For development and testing purposes, the i915.force_probe module
parameter and DRM_I915_FORCE_PROBE kconfig option allow probing of
devices that aren't supported by the driver.

The i915.force_probe module parameter is "unsafe" and setting it taints
the kernel. However, using the kconfig option does not.

Always taint the kernel when force probing a device that is not
supported.

v2: Drop "depends on EXPERT" to avoid build breakage (kernel test robot)

Fixes: 7ef5ef5cdead ("drm/i915: add force_probe module parameter to replace alpha_support")
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Dave Airlie <airlied@gmail.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230504103508.1818540-1-jani.nikula@intel.com
14 months agodrm/i915: Fix wrong condition in bxt_set_cdclk for DG2
Stanislav Lisovskiy [Sat, 6 May 2023 14:42:17 +0000 (17:42 +0300)]
drm/i915: Fix wrong condition in bxt_set_cdclk for DG2

By my own mistake, after adding !IS_DG2 into wrong branch,
bxt_set_cdclk started to execute code intended for platforms
gen < 11, which is wrong.
Move IS_DG2 check to better place.

Fixes: ceb0cc3b4288 ("drm/i915: Communicate display power demands to pcode")
Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Reviewed-by: Vinod Govindapillai <vinod.govindapillai@intel.com
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230506144217.26075-1-stanislav.lisovskiy@intel.com
14 months agoLinux 6.4-rc1
Linus Torvalds [Sun, 7 May 2023 20:34:35 +0000 (13:34 -0700)]
Linux 6.4-rc1

14 months agoMerge tag 'perf-tools-for-v6.4-3-2023-05-06' of git://git.kernel.org/pub/scm/linux...
Linus Torvalds [Sun, 7 May 2023 18:32:18 +0000 (11:32 -0700)]
Merge tag 'perf-tools-for-v6.4-3-2023-05-06' of git://git./linux/kernel/git/acme/linux

Pull perf tool updates from Arnaldo Carvalho de Melo:
 "Third version of perf tool updates, with the build problems with with
  using a 'vmlinux.h' generated from the main build fixed, and the bpf
  skeleton build disabled by default.

  Build:

   - Require libtraceevent to build, one can disable it using
     NO_LIBTRACEEVENT=1.

     It is required for tools like 'perf sched', 'perf kvm', 'perf
     trace', etc.

     libtraceevent is available in most distros so installing
     'libtraceevent-devel' should be a one-time event to continue
     building perf as usual.

     Using NO_LIBTRACEEVENT=1 produces tooling that is functional and
     sufficient for lots of users not interested in those libtraceevent
     dependent features.

   - Allow Python support in 'perf script' when libtraceevent isn't
     linked, as not all features requires it, for instance Intel PT does
     not use tracepoints.

   - Error if the python interpreter needed for jevents to work isn't
     available and NO_JEVENTS=1 isn't set, preventing a build without
     support for JSON vendor events, which is a rare but possible
     condition. The two check error messages:

        $(error ERROR: No python interpreter needed for jevents generation. Install python or build with NO_JEVENTS=1.)
        $(error ERROR: Python interpreter needed for jevents generation too old (older than 3.6). Install a newer python or build with NO_JEVENTS=1.)

   - Make libbpf 1.0 the minimum required when building with out of
     tree, distro provided libbpf.

   - Use libsdtc++'s and LLVM's libcxx's __cxa_demangle, a portable C++
     demangler, add 'perf test' entry for it.

   - Make binutils libraries opt in, as distros disable building with it
     due to licensing, they were used for C++ demangling, for instance.

   - Switch libpfm4 to opt-out rather than opt-in, if libpfm-devel (or
     equivalent) isn't installed, we'll just have a build warning:

       Makefile.config:1144: libpfm4 not found, disables libpfm4 support. Please install libpfm4-dev

   - Add a feature test for scandirat(), that is not implemented so far
     in musl and uclibc, disabling features that need it, such as
     scanning for tracepoints in /sys/kernel/tracing/events.

  perf BPF filters:

   - New feature where BPF can be used to filter samples, for instance:

      $ sudo ./perf record -e cycles --filter 'period > 1000' true
      $ sudo ./perf script
           perf-exec 2273949 546850.708501:       5029 cycles:  ffffffff826f9e25 finish_wait+0x5 ([kernel.kallsyms])
           perf-exec 2273949 546850.708508:      32409 cycles:  ffffffff826f9e25 finish_wait+0x5 ([kernel.kallsyms])
           perf-exec 2273949 546850.708526:     143369 cycles:  ffffffff82b4cdbf xas_start+0x5f ([kernel.kallsyms])
           perf-exec 2273949 546850.708600:     372650 cycles:  ffffffff8286b8f7 __pagevec_lru_add+0x117 ([kernel.kallsyms])
           perf-exec 2273949 546850.708791:     482953 cycles:  ffffffff829190de __mod_memcg_lruvec_state+0x4e ([kernel.kallsyms])
                true 2273949 546850.709036:     501985 cycles:  ffffffff828add7c tlb_gather_mmu+0x4c ([kernel.kallsyms])
                true 2273949 546850.709292:     503065 cycles:      7f2446d97c03 _dl_map_object_deps+0x973 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2)

   - In addition to 'period' (PERF_SAMPLE_PERIOD), the other
     PERF_SAMPLE_ can be used for filtering, and also some other sample
     accessible values, from tools/perf/Documentation/perf-record.txt:

        Essentially the BPF filter expression is:

        <term> <operator> <value> (("," | "||") <term> <operator> <value>)*

     The <term> can be one of:
        ip, id, tid, pid, cpu, time, addr, period, txn, weight, phys_addr,
        code_pgsz, data_pgsz, weight1, weight2, weight3, ins_lat, retire_lat,
        p_stage_cyc, mem_op, mem_lvl, mem_snoop, mem_remote, mem_lock,
        mem_dtlb, mem_blk, mem_hops

     The <operator> can be one of:
        ==, !=, >, >=, <, <=, &

     The <value> can be one of:
        <number> (for any term)
        na, load, store, pfetch, exec (for mem_op)
        l1, l2, l3, l4, cxl, io, any_cache, lfb, ram, pmem (for mem_lvl)
        na, none, hit, miss, hitm, fwd, peer (for mem_snoop)
        remote (for mem_remote)
        na, locked (for mem_locked)
        na, l1_hit, l1_miss, l2_hit, l2_miss, any_hit, any_miss, walk, fault (for mem_dtlb)
        na, by_data, by_addr (for mem_blk)
        hops0, hops1, hops2, hops3 (for mem_hops)

  perf lock contention:

   - Show lock type with address.

   - Track and show mmap_lock, siglock and per-cpu rq_lock with address.
     This is done for mmap_lock by following the current->mm pointer:

      $ sudo ./perf lock con -abl -- sleep 10
       contended   total wait     max wait     avg wait            address   symbol
       ...
           16344    312.30 ms      2.22 ms     19.11 us   ffff8cc702595640
           17686    310.08 ms      1.49 ms     17.53 us   ffff8cc7025952c0
               3     84.14 ms     45.79 ms     28.05 ms   ffff8cc78114c478   mmap_lock
            3557     76.80 ms     68.75 us     21.59 us   ffff8cc77ca3af58
               1     68.27 ms     68.27 ms     68.27 ms   ffff8cda745dfd70
               9     54.53 ms      7.96 ms      6.06 ms   ffff8cc7642a48b8   mmap_lock
           14629     44.01 ms     60.00 us      3.01 us   ffff8cc7625f9ca0
            3481     42.63 ms    140.71 us     12.24 us   ffffffff937906ac   vmap_area_lock
           16194     38.73 ms     42.15 us      2.39 us   ffff8cd397cbc560
              11     38.44 ms     10.39 ms      3.49 ms   ffff8ccd6d12fbb8   mmap_lock
               1      5.43 ms      5.43 ms      5.43 ms   ffff8cd70018f0d8
            1674      5.38 ms    422.93 us      3.21 us   ffffffff92e06080   tasklist_lock
             581      4.51 ms    130.68 us      7.75 us   ffff8cc9b1259058
               5      3.52 ms      1.27 ms    703.23 us   ffff8cc754510070
             112      3.47 ms     56.47 us     31.02 us   ffff8ccee38b3120
             381      3.31 ms     73.44 us      8.69 us   ffffffff93790690   purge_vmap_area_lock
             255      3.19 ms     36.35 us     12.49 us   ffff8d053ce30c80

   - Update default map size to 16384.

   - Allocate single letter option -M for --map-nr-entries, as it is
     proving being frequently used.

   - Fix struct rq lock access for older kernels with BPF's CO-RE
     (Compile once, run everywhere).

   - Fix problems found with MSAn.

  perf report/top:

   - Add inline information when using --call-graph=fp or lbr, as was
     already done to the --call-graph=dwarf callchain mode.

   - Improve the 'srcfile' sort key performance by really using an
     optimization introduced in 6.2 for the 'srcline' sort key that
     avoids calling addr2line for comparision with each sample.

  perf sched:

   - Make 'perf sched latency/map/replay' to use "sched:sched_waking"
     instead of "sched:sched_waking", consistent with 'perf record'
     since d566a9c2d482 ("perf sched: Prefer sched_waking event when it
     exists").

  perf ftrace:

   - Make system wide the default target for latency subcommand, run the
     following command then generate some network traffic and press
     control+C:

       # perf ftrace latency -T __kfree_skb
     ^C
         DURATION     |      COUNT | GRAPH                                          |
          0 - 1    us |         27 | #############                                  |
          1 - 2    us |         22 | ###########                                    |
          2 - 4    us |          8 | ####                                           |
          4 - 8    us |          5 | ##                                             |
          8 - 16   us |         24 | ############                                   |
         16 - 32   us |          2 | #                                              |
         32 - 64   us |          1 |                                                |
         64 - 128  us |          0 |                                                |
        128 - 256  us |          0 |                                                |
        256 - 512  us |          0 |                                                |
        512 - 1024 us |          0 |                                                |
          1 - 2    ms |          0 |                                                |
          2 - 4    ms |          0 |                                                |
          4 - 8    ms |          0 |                                                |
          8 - 16   ms |          0 |                                                |
         16 - 32   ms |          0 |                                                |
         32 - 64   ms |          0 |                                                |
         64 - 128  ms |          0 |                                                |
        128 - 256  ms |          0 |                                                |
        256 - 512  ms |          0 |                                                |
        512 - 1024 ms |          0 |                                                |
          1 - ...   s |          0 |                                                |
       #

  perf top:

   - Add --branch-history (LBR: Last Branch Record) option, just like
     already available for 'perf record'.

   - Fix segfault in thread__comm_len() where thread->comm was being
     used outside thread->comm_lock.

  perf annotate:

   - Allow configuring objdump and addr2line in ~/.perfconfig., so that
     you can use alternative binaries, such as llvm's.

  perf kvm:

   - Add TUI mode for 'perf kvm stat report'.

  Reference counting:

   - Add reference count checking infrastructure to check for use after
     free, done to the 'cpumap', 'namespaces', 'maps' and 'map' structs,
     more to come.

     To build with it use -DREFCNT_CHECKING=1 in the make command line
     to build tools/perf. Documented at:

       https://perf.wiki.kernel.org/index.php/Reference_Count_Checking

   - The above caught, for instance, fix, present in this series:

        - Fix maps use after put in 'perf test "Share thread maps"':

          'maps' is copied from leader, but the leader is put on line 79
          and then 'maps' is used to read the reference count below - so
          a use after put, with the put of maps happening within
          thread__put.

     Fixed by reversing the order of puts so that the leader is put
     last.

   - Also several fixes were made to places where reference counts were
     not being held.

   - Make this one of the tests in 'make -C tools/perf build-test' to
     regularly build test it and to make sure no direct access to the
     reference counted structs are made, doing that via accessors to
     check the validity of the struct pointer.

  ARM64:

   - Fix 'perf report' segfault when filtering coresight traces by
     sparse lists of CPUs.

   - Add support for 'simd' as a sort field for 'perf report', to show
     ARM's NEON SIMD's predicate flags: "partial" and "empty".

  arm64 vendor events:

   - Add N1 metrics.

  Intel vendor events:

   - Add graniterapids, grandridge and sierraforrest events.

   - Refresh events for: alderlake, aldernaken, broadwell, broadwellde,
     broadwellx, cascadelakx, haswell, haswellx, icelake, icelakex,
     jaketown, meteorlake, knightslanding, sandybridge, sapphirerapids,
     silvermont, skylake, tigerlake and westmereep-dp

   - Refresh metrics for alderlake-n, broadwell, broadwellde,
     broadwellx, haswell, haswellx, icelakex, ivybridge, ivytown and
     skylakex.

  perf stat:

   - Implement --topdown using JSON metrics.

   - Add TopdownL1 JSON metric as a default if present, but disable it
     for now for some Intel hybrid architectures, a series of patches
     addressing this is being reviewed and will be submitted for v6.5.

   - Use metrics for --smi-cost.

   - Update topdown documentation.

  Vendor events (JSON) infrastructure:

   - Add support for computing and printing metric threshold values. For
     instance, here is one found in thesapphirerapids json file:

       {
           "BriefDescription": "Percentage of cycles spent in System Management Interrupts.",
           "MetricExpr": "((msr@aperf@ - cycles) / msr@aperf@ if msr@smi@ > 0 else 0)",
           "MetricGroup": "smi",
           "MetricName": "smi_cycles",
           "MetricThreshold": "smi_cycles > 0.1",
           "ScaleUnit": "100%"
       },

   - Test parsing metric thresholds with the fake PMU in 'perf test
     pmu-events'.

   - Support for printing metric thresholds in 'perf list'.

   - Add --metric-no-threshold option to 'perf stat'.

   - Add rand (reverse and) and has_pmem (optane memory) support to
     metrics.

   - Sort list of input files to avoid depending on the order from
     readdir() helping in obtaining reproducible builds.

  S/390:

   - Add common metrics: - CPI (cycles per instruction), prbstate (ratio
     of instructions executed in problem state compared to total number
     of instructions), l1mp (Level one instruction and data cache misses
     per 100 instructions).

   - Add cache metrics for z13, z14, z15 and z16.

   - Add metric for TLB and cache.

  ARM:

   - Add raw decoding for SPE (Statistical Profiling Extension) v1.3 MTE
     (Memory Tagging Extension) and MOPS (Memory Operations) load/store.

  Intel PT hardware tracing:

   - Add event type names UINTR (User interrupt delivered) and UIRET
     (Exiting from user interrupt routine), documented in table 32-50
     "CFE Packet Type and Vector Fields Details" in the Intel Processor
     Trace chapter of The Intel SDM Volume 3 version 078.

   - Add support for new branch instructions ERETS and ERETU.

   - Fix CYC timestamps after standalone CBR

  ARM CoreSight hardware tracing:

   - Allow user to override timestamp and contextid settings.

   - Fix segfault in dso lookup.

   - Fix timeless decode mode detection.

   - Add separate decode paths for timeless and per-thread modes.

  auxtrace:

   - Fix address filter entire kernel size.

  Miscellaneous:

   - Fix use-after-free and unaligned bugs in the PLT handling routines.

   - Use zfree() to reduce chances of use after free.

   - Add missing 0x prefix for addresses printed in hexadecimal in 'perf
     probe'.

   - Suppress massive unsupported target platform errors in the unwind
     code.

   - Fix return incorrect build_id size in elf_read_build_id().

   - Fix 'perf scripts intel-pt-events.py' IPC output for Python 2 .

   - Add missing new parameter in kfree_skb tracepoint to the python
     scripts using it.

   - Add 'perf bench syscall fork' benchmark.

   - Add support for printing PERF_MEM_LVLNUM_UNC (Uncached access) in
     'perf mem'.

   - Fix wrong size expectation for perf test 'Setup struct
     perf_event_attr' caused by the patch adding
     perf_event_attr::config3.

   - Fix some spelling mistakes"

* tag 'perf-tools-for-v6.4-3-2023-05-06' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (365 commits)
  Revert "perf build: Make BUILD_BPF_SKEL default, rename to NO_BPF_SKEL"
  Revert "perf build: Warn for BPF skeletons if endian mismatches"
  perf metrics: Fix SEGV with --for-each-cgroup
  perf bpf skels: Stop using vmlinux.h generated from BTF, use subset of used structs + CO-RE
  perf stat: Separate bperf from bpf_profiler
  perf test record+probe_libc_inet_pton: Fix call chain match on x86_64
  perf test record+probe_libc_inet_pton: Fix call chain match on s390
  perf tracepoint: Fix memory leak in is_valid_tracepoint()
  perf cs-etm: Add fix for coresight trace for any range of CPUs
  perf build: Fix unescaped # in perf build-test
  perf unwind: Suppress massive unsupported target platform errors
  perf script: Add new parameter in kfree_skb tracepoint to the python scripts using it
  perf script: Print raw ip instead of binary offset for callchain
  perf symbols: Fix return incorrect build_id size in elf_read_build_id()
  perf list: Modify the warning message about scandirat(3)
  perf list: Fix memory leaks in print_tracepoint_events()
  perf lock contention: Rework offset calculation with BPF CO-RE
  perf lock contention: Fix struct rq lock access
  perf stat: Disable TopdownL1 on hybrid
  perf stat: Avoid SEGV on counter->name
  ...

14 months agoMerge tag 'core-debugobjects-2023-05-06' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 7 May 2023 18:04:26 +0000 (11:04 -0700)]
Merge tag 'core-debugobjects-2023-05-06' of git://git./linux/kernel/git/tip/tip

Pull debugobjects fix from Thomas Gleixner:
 "A single fix for debugobjects:

  The recent fix to ensure atomicity of lookup and allocation
  inadvertently broke the pool refill mechanism, so that debugobject
  OOMs now in certain situations. The reason is that the functions which
  got updated no longer invoke debug_objecs_init(), which is now the
  only place to care about refilling the tracking object pool.

  Restore the original behaviour by adding explicit refill opportunities
  to those places"

* tag 'core-debugobjects-2023-05-06' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  debugobject: Ensure pool refill (again)

14 months agoMerge tag 'v6.4-p2' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Sun, 7 May 2023 17:57:14 +0000 (10:57 -0700)]
Merge tag 'v6.4-p2' of git://git./linux/kernel/git/herbert/crypto-2.6

Pull crypto fixes from Herbert Xu:

 - A long-standing bug in crypto_engine

 - A buggy but harmless check in the sun8i-ss driver

 - A regression in the CRYPTO_USER interface

* tag 'v6.4-p2' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: api - Fix CRYPTO_USER checks for report function
  crypto: engine - fix crypto_queue backlog handling
  crypto: sun8i-ss - Fix a test in sun8i_ss_setup_ivs()

14 months agoMerge tag '6.4-rc-smb3-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Sun, 7 May 2023 17:46:21 +0000 (10:46 -0700)]
Merge tag '6.4-rc-smb3-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "smb3 client fixes, mostly DFS or reconnect related:

   - Two DFS connection sharing fixes

   - DFS refresh fix

   - Reconnect fix

   - Two potential use after free fixes

   - Also print prefix patch in mount debug msg

   - Two small cleanup fixes"

* tag '6.4-rc-smb3-client-fixes-part2' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: Remove unneeded semicolon
  cifs: fix sharing of DFS connections
  cifs: avoid potential races when handling multiple dfs tcons
  cifs: protect access of TCP_Server_Info::{origin,leaf}_fullpath
  cifs: fix potential race when tree connecting ipc
  cifs: fix potential use-after-free bugs in TCP_Server_Info::hostname
  cifs: print smb3_fs_context::source when mounting
  cifs: protect session status check in smb2_reconnect()
  SMB3.1.1: correct definition for app_instance_id create contexts

14 months agoMerge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Linus Torvalds [Sun, 7 May 2023 17:31:45 +0000 (10:31 -0700)]
Merge tag 'clk-for-linus' of git://git./linux/kernel/git/clk/linux

Pull clk fixes from Stephen Boyd:
 "A couple more patches that would be good to get into -rc1:

   - Revert an i.MX patch that's causing video failures because division
     math goes sideways

   - Fix a clang + W=1 build isue where FIELD_PREP() is taking a 32-bit
     variable instead of the usual u64 type

   - Fix a Kconfig bug in the StarFive JH7110 clk config that selects a
     reset controller when it can't be selected"

* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: starfive: Fix RESET_STARFIVE_JH7110 can't be selected in a specified case
  clk: sp7021: Adjust width of _m in HWM_FIELD_PREP()
  Revert "clk: imx: composite-8m: Add support to determine_rate"

14 months agoMerge tag 'mailbox-v6.4' of git://git.linaro.org/landing-teams/working/fujitsu/integr...
Linus Torvalds [Sun, 7 May 2023 17:17:33 +0000 (10:17 -0700)]
Merge tag 'mailbox-v6.4' of git://git.linaro.org/landing-teams/working/fujitsu/integration

Pull mailbox updates from Jassi Brar:

 - mailbox api: allow direct registration to a channel and convert omap
   and pcc to use mbox_bind_client

 - omap and hi6220 : use of_property_read_bool

 - test: fix double-free and use spinlock header

 - rockchip and bcm-pdc: drop of_match_ptr

 - mpfs: change config symbol

 - mediatek gce: support MT6795

 - qcom apcs: consolidate of_device_id and support IPQ9574

* tag 'mailbox-v6.4' of git://git.linaro.org/landing-teams/working/fujitsu/integration:
  dt-bindings: mailbox: qcom: add compatible for IPQ9574 SoC
  mailbox: qcom-apcs-ipc: do not grow the of_device_id
  dt-bindings: mailbox: qcom,apcs-kpss-global: use fallbacks for few variants
  dt-bindings: mailbox: mediatek,gce-mailbox: Add support for MT6795
  mailbox: mpfs: convert SOC_MICROCHIP_POLARFIRE to ARCH_MICROCHIP_POLARFIRE
  mailbox: bcm-pdc: drop of_match_ptr for ID table
  mailbox: rockchip: drop of_match_ptr for ID table
  mailbox: mailbox-test: Fix potential double-free in mbox_test_message_write()
  mailbox: mailbox-test: Explicitly include header for spinlock support
  mailbox: Use of_property_read_bool() for boolean properties
  mailbox: pcc: Use mbox_bind_client
  mailbox: omap: Use mbox_bind_client
  mailbox: Allow direct registration to a channel

14 months agoMerge tag 'for-6.4/io_uring-2023-05-07' of git://git.kernel.dk/linux
Linus Torvalds [Sun, 7 May 2023 17:00:09 +0000 (10:00 -0700)]
Merge tag 'for-6.4/io_uring-2023-05-07' of git://git.kernel.dk/linux

Pull more io_uring updates from Jens Axboe:
 "Nothing major in here, just two different parts:

   - A small series from Breno that enables passing the full SQE down
     for ->uring_cmd().

     This is a prerequisite for enabling full network socket operations.
     Queued up a bit late because of some stylistic concerns that got
     resolved, would be nice to have this in 6.4-rc1 so the dependent
     work will be easier to handle for 6.5.

   - Fix for the huge page coalescing, which was a regression introduced
     in the 6.3 kernel release (Tobias)"

* tag 'for-6.4/io_uring-2023-05-07' of git://git.kernel.dk/linux:
  io_uring: Remove unnecessary BUILD_BUG_ON
  io_uring: Pass whole sqe to commands
  io_uring: Create a helper to return the SQE size
  io_uring/rsrc: check for nonconsecutive pages

14 months agoRevert "perf build: Make BUILD_BPF_SKEL default, rename to NO_BPF_SKEL"
Arnaldo Carvalho de Melo [Sat, 6 May 2023 21:07:37 +0000 (18:07 -0300)]
Revert "perf build: Make BUILD_BPF_SKEL default, rename to NO_BPF_SKEL"

This reverts commit a980755beb5aca9002e1c95ba519b83a44242b5b.

We need to better polish building with BPF skels, so revert back to
making it an experimental feature that has to be explicitely enabled
using BUILD_BPF_SKEL=1.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
14 months agoRevert "perf build: Warn for BPF skeletons if endian mismatches"
Arnaldo Carvalho de Melo [Sat, 6 May 2023 21:06:43 +0000 (18:06 -0300)]
Revert "perf build: Warn for BPF skeletons if endian mismatches"

This reverts commit 51924ae69eea5bc90b5da525fbcf4bbd5f8551b3.

We need to better polish building with BPF skels, so revert back to
making it an experimental feature that has to be explicitely enabled
using BUILD_BPF_SKEL=1.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
14 months agoMerge tag 'mm-stable-2023-05-06-10-49' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 6 May 2023 18:43:08 +0000 (11:43 -0700)]
Merge tag 'mm-stable-2023-05-06-10-49' of git://git./linux/kernel/git/akpm/mm

Pull dmapool updates - again - from Andrew Morton:
 "Reinstate the dmapool changes which were accidentally removed by a
  mishap on the last commit in the previous attempt at the series"

Fixes: 2d55c16c0c54 ("dmapool: create/destroy cleanup").

[ The whole old series: def8574308ed..2d55c16c0c54 results in an empty
  diff because that last commit ended up being just a revert of all that
  came everything before it.     - Linus ]

* tag 'mm-stable-2023-05-06-10-49' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  dmapool: link blocks across pages
  dmapool: don't memset on free twice
  dmapool: simplify freeing
  dmapool: consolidate page initialization
  dmapool: rearrange page alloc failure handling
  dmapool: move debug code to own functions
  dmapool: speedup DMAPOOL_DEBUG with init_on_alloc
  dmapool: cleanup integer types
  dmapool: use sysfs_emit() instead of scnprintf()
  dmapool: remove checks for dev == NULL

14 months agoMerge tag 'mm-hotfixes-stable-2023-05-06-10-45' of git://git.kernel.org/pub/scm/linux...
Linus Torvalds [Sat, 6 May 2023 18:25:03 +0000 (11:25 -0700)]
Merge tag 'mm-hotfixes-stable-2023-05-06-10-45' of git://git./linux/kernel/git/akpm/mm

Pull hotfixes from Andrew Morton:
 "Five hotfixes.

  Three are cc:stable, two pertain to merge window changes"

* tag 'mm-hotfixes-stable-2023-05-06-10-45' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  afs: fix the afs_dir_get_folio return value
  nilfs2: do not write dirty data after degenerating to read-only
  mm: do not reclaim private data from pinned page
  nilfs2: fix infinite loop in nilfs_mdt_get_block()
  mm/mmap/vma_merge: always check invariants

14 months agodmapool: link blocks across pages
Keith Busch [Thu, 26 Jan 2023 21:51:24 +0000 (13:51 -0800)]
dmapool: link blocks across pages

The allocated dmapool pages are never freed for the lifetime of the pool.
There is no need for the two level list+stack lookup for finding a free
block since nothing is ever removed from the list.  Just use a simple
stack, reducing time complexity to constant.

The implementation inserts the stack linking elements and the dma handle
of the block within itself when freed.  This means the smallest possible
dmapool block is increased to at most 16 bytes to accommodate these
fields, but there are no exisiting users requesting a dma pool smaller
than that anyway.

Removing the list has a significant change in performance. Using the
kernel's micro-benchmarking self test:

Before:

  # modprobe dmapool_test
  dmapool test: size:16   blocks:8192   time:57282
  dmapool test: size:64   blocks:8192   time:172562
  dmapool test: size:256  blocks:8192   time:789247
  dmapool test: size:1024 blocks:2048   time:371823
  dmapool test: size:4096 blocks:1024   time:362237

After:

  # modprobe dmapool_test
  dmapool test: size:16   blocks:8192   time:24997
  dmapool test: size:64   blocks:8192   time:26584
  dmapool test: size:256  blocks:8192   time:33542
  dmapool test: size:1024 blocks:2048   time:9022
  dmapool test: size:4096 blocks:1024   time:6045

The module test allocates quite a few blocks that may not accurately
represent how these pools are used in real life.  For a more marco level
benchmark, running fio high-depth + high-batched on nvme, this patch shows
submission and completion latency reduced by ~100usec each, 1% IOPs
improvement, and perf record's time spent in dma_pool_alloc/free were
reduced by half.

[kbusch@kernel.org: push new blocks in ascending order]
Link: https://lkml.kernel.org/r/20230221165400.1595247-1-kbusch@meta.com
Link: https://lkml.kernel.org/r/20230126215125.4069751-12-kbusch@meta.com
Fixes: 2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Tested-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
14 months agodmapool: don't memset on free twice
Keith Busch [Thu, 26 Jan 2023 21:51:23 +0000 (13:51 -0800)]
dmapool: don't memset on free twice

If debug is enabled, dmapool will poison the range, so no need to clear it
to 0 immediately before writing over it.

Link: https://lkml.kernel.org/r/20230126215125.4069751-11-kbusch@meta.com
Fixes: 2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
14 months agodmapool: simplify freeing
Keith Busch [Thu, 26 Jan 2023 21:51:22 +0000 (13:51 -0800)]
dmapool: simplify freeing

The actions for busy and not busy are mostly the same, so combine these
and remove the unnecessary function.  Also, the pool is about to be freed
so there's no need to poison the page data since we only check for poison
on alloc, which can't be done on a freed pool.

Link: https://lkml.kernel.org/r/20230126215125.4069751-10-kbusch@meta.com
Fixes: 2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
14 months agodmapool: consolidate page initialization
Keith Busch [Thu, 26 Jan 2023 21:51:21 +0000 (13:51 -0800)]
dmapool: consolidate page initialization

Various fields of the dma pool are set in different places. Move it all
to one function.

Link: https://lkml.kernel.org/r/20230126215125.4069751-9-kbusch@meta.com
Fixes: 2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
14 months agodmapool: rearrange page alloc failure handling
Keith Busch [Thu, 26 Jan 2023 21:51:20 +0000 (13:51 -0800)]
dmapool: rearrange page alloc failure handling

Handle the error in a condition so the good path can be in the normal
flow.

Link: https://lkml.kernel.org/r/20230126215125.4069751-8-kbusch@meta.com
Fixes: 2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
14 months agodmapool: move debug code to own functions
Keith Busch [Thu, 26 Jan 2023 21:51:19 +0000 (13:51 -0800)]
dmapool: move debug code to own functions

Clean up the normal path by moving the debug code outside it.

Link: https://lkml.kernel.org/r/20230126215125.4069751-7-kbusch@meta.com
Fixes: 2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
14 months agodmapool: speedup DMAPOOL_DEBUG with init_on_alloc
Tony Battersby [Thu, 26 Jan 2023 21:51:18 +0000 (13:51 -0800)]
dmapool: speedup DMAPOOL_DEBUG with init_on_alloc

Avoid double-memset of the same allocated memory in dma_pool_alloc() when
both DMAPOOL_DEBUG is enabled and init_on_alloc=1.

Link: https://lkml.kernel.org/r/20230126215125.4069751-6-kbusch@meta.com
Fixes: 2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
14 months agodmapool: cleanup integer types
Tony Battersby [Thu, 26 Jan 2023 21:51:17 +0000 (13:51 -0800)]
dmapool: cleanup integer types

To represent the size of a single allocation, dmapool currently uses
'unsigned int' in some places and 'size_t' in other places.  Standardize
on 'unsigned int' to reduce overhead, but use 'size_t' when counting all
the blocks in the entire pool.

Link: https://lkml.kernel.org/r/20230126215125.4069751-5-kbusch@meta.com
Fixes: 2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
14 months agodmapool: use sysfs_emit() instead of scnprintf()
Tony Battersby [Thu, 26 Jan 2023 21:51:16 +0000 (13:51 -0800)]
dmapool: use sysfs_emit() instead of scnprintf()

Use sysfs_emit instead of scnprintf, snprintf or sprintf.

Link: https://lkml.kernel.org/r/20230126215125.4069751-4-kbusch@meta.com
Fixes: 2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
14 months agodmapool: remove checks for dev == NULL
Tony Battersby [Thu, 26 Jan 2023 21:51:15 +0000 (13:51 -0800)]
dmapool: remove checks for dev == NULL

dmapool originally tried to support pools without a device because
dma_alloc_coherent() supports allocations without a device.  But nobody
ended up using dma pools without a device, and trying to do so will result
in an oops.  So remove the checks for pool->dev == NULL since they are
unneeded bloat.

[kbusch@kernel.org: add check for null dev on create]
Link: https://lkml.kernel.org/r/20230126215125.4069751-3-kbusch@meta.com
Fixes: 2d55c16c0c54 ("dmapool: create/destroy cleanup")
Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
14 months agonfs: fix mis-merged __filemap_get_folio() error check
Linus Torvalds [Sat, 6 May 2023 17:16:19 +0000 (10:16 -0700)]
nfs: fix mis-merged __filemap_get_folio() error check

Fix another case of an incorrect check for the returned 'folio' value
from __filemap_get_folio().

The failure case used to return NULL, but was changed by commit
66dabbb65d67 ("mm: return an ERR_PTR from __filemap_get_folio").

But in the meantime, commit ec108d3cc766 ("NFS: Convert readdir page
array functions to use a folio") added a new user of that function.

And my merge of the two did not fix this up correctly.

The ext4 merge had the same issue, but that one had been caught in
linux-next and got properly fixed while merging.

Fixes: 0127f25b5dfc ("Merge tag 'nfs-for-6.4-1' of git://git.linux-nfs.org/projects/anna/linux-nfs")
Cc: Anna Schumaker <anna@kernel.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 months agoafs: fix the afs_dir_get_folio return value
Christoph Hellwig [Wed, 3 May 2023 15:45:26 +0000 (17:45 +0200)]
afs: fix the afs_dir_get_folio return value

Keep returning NULL on failure instead of letting an ERR_PTR escape to
callers that don't expect it.

Link: https://lkml.kernel.org/r/20230503154526.1223095-2-hch@lst.de
Fixes: 66dabbb65d67 ("mm: return an ERR_PTR from __filemap_get_folio")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Jan Kara <jack@suse.cz>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: David Howells <dhowells@redhat.com>
Tested-by: David Howells <dhowells@redhat.com>
Cc: Marc Dionne <marc.dionne@auristor.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
14 months agonilfs2: do not write dirty data after degenerating to read-only
Ryusuke Konishi [Thu, 27 Apr 2023 01:15:26 +0000 (10:15 +0900)]
nilfs2: do not write dirty data after degenerating to read-only

According to syzbot's report, mark_buffer_dirty() called from
nilfs_segctor_do_construct() outputs a warning with some patterns after
nilfs2 detects metadata corruption and degrades to read-only mode.

After such read-only degeneration, page cache data may be cleared through
nilfs_clear_dirty_page() which may also clear the uptodate flag for their
buffer heads.  However, even after the degeneration, log writes are still
performed by unmount processing etc., which causes mark_buffer_dirty() to
be called for buffer heads without the "uptodate" flag and causes the
warning.

Since any writes should not be done to a read-only file system in the
first place, this fixes the warning in mark_buffer_dirty() by letting
nilfs_segctor_do_construct() abort early if in read-only mode.

This also changes the retry check of nilfs_segctor_write_out() to avoid
unnecessary log write retries if it detects -EROFS that
nilfs_segctor_do_construct() returned.

Link: https://lkml.kernel.org/r/20230427011526.13457-1-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: syzbot+2af3bc9585be7f23f290@syzkaller.appspotmail.com
Link: https://syzkaller.appspot.com/bug?extid=2af3bc9585be7f23f290
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
14 months agomm: do not reclaim private data from pinned page
Jan Kara [Fri, 28 Apr 2023 12:41:40 +0000 (14:41 +0200)]
mm: do not reclaim private data from pinned page

If the page is pinned, there's no point in trying to reclaim it.
Furthermore if the page is from the page cache we don't want to reclaim
fs-private data from the page because the pinning process may be writing
to the page at any time and reclaiming fs private info on a dirty page can
upset the filesystem (see link below).

Link: https://lore.kernel.org/linux-mm/20180103100430.GE4911@quack2.suse.cz
Link: https://lkml.kernel.org/r/20230428124140.30166-1-jack@suse.cz
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Lorenzo Stoakes <lstoakes@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Acked-by: David Hildenbrand <david@redhat.com>
Acked-by: Peter Xu <peterx@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
14 months agonilfs2: fix infinite loop in nilfs_mdt_get_block()
Ryusuke Konishi [Sun, 30 Apr 2023 19:30:46 +0000 (04:30 +0900)]
nilfs2: fix infinite loop in nilfs_mdt_get_block()

If the disk image that nilfs2 mounts is corrupted and a virtual block
address obtained by block lookup for a metadata file is invalid,
nilfs_bmap_lookup_at_level() may return the same internal return code as
-ENOENT, meaning the block does not exist in the metadata file.

This duplication of return codes confuses nilfs_mdt_get_block(), causing
it to read and create a metadata block indefinitely.

In particular, if this happens to the inode metadata file, ifile,
semaphore i_rwsem can be left held, causing task hangs in lock_mount.

Fix this issue by making nilfs_bmap_lookup_at_level() treat virtual block
address translation failures with -ENOENT as metadata corruption instead
of returning the error code.

Link: https://lkml.kernel.org/r/20230430193046.6769-1-konishi.ryusuke@gmail.com
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Tested-by: Ryusuke Konishi <konishi.ryusuke@gmail.com>
Reported-by: syzbot+221d75710bde87fa0e97@syzkaller.appspotmail.com
Link: https://syzkaller.appspot.com/bug?extid=221d75710bde87fa0e97
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
14 months agomm/mmap/vma_merge: always check invariants
Lorenzo Stoakes [Sun, 30 Apr 2023 20:19:17 +0000 (21:19 +0100)]
mm/mmap/vma_merge: always check invariants

We may still have inconsistent input parameters even if we choose not to
merge and the vma_merge() invariant checks are useful for checking this
with no production runtime cost (these are only relevant when
CONFIG_DEBUG_VM is specified).

Therefore, perform these checks regardless of whether we merge.

This is relevant, as a recent issue (addressed in commit "mm/mempolicy:
Correctly update prev when policy is equal on mbind") in the mbind logic
was only picked up in the 6.2.y stable branch where these assertions are
performed prior to determining mergeability.

Had this remained the same in mainline this issue may have been picked up
faster, so moving forward let's always check them.

Link: https://lkml.kernel.org/r/df548a6ae3fa135eec3b446eb3dae8eb4227da97.1682885809.git.lstoakes@gmail.com
Signed-off-by: Lorenzo Stoakes <lstoakes@gmail.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
14 months agofilemap: Handle error return from __filemap_get_folio()
Matthew Wilcox [Sat, 6 May 2023 16:04:14 +0000 (17:04 +0100)]
filemap: Handle error return from __filemap_get_folio()

Smatch reports that filemap_fault() was missed in the conversion of
__filemap_get_folio() error returns from NULL to ERR_PTR.

Fixes: 66dabbb65d67 ("mm: return an ERR_PTR from __filemap_get_folio")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Reported-by: syzbot+48011b86c8ea329af1b9@syzkaller.appspotmail.com
Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 months agoMerge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Sat, 6 May 2023 15:37:28 +0000 (08:37 -0700)]
Merge tag 'scsi-misc' of git://git./linux/kernel/git/jejb/scsi

Pull more SCSI updates from James Bottomley:
 "Six late arriving patches for the merge window. Five are minor
  assorted fixes and updates.

  The IPR driver change removes SATA support, which will now allow a
  major cleanup in the ATA subsystem because it was the only driver
  still using the old attachment mechanism. The driver is only used on
  power systems and SATA was used to support a DVD device, which has
  long been moved to a different hba. IBM chose this route instead of
  porting ipr to the newer SATA interfaces"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: qedi: Fix use after free bug in qedi_remove()
  scsi: ufs: core: mcq: Fix &hwq->cq_lock deadlock issue
  scsi: ipr: Remove several unused variables
  scsi: pm80xx: Log device registration
  scsi: ipr: Remove SATA support
  scsi: scsi_debug: Abort commands from scsi_debug_device_reset()