linux-kernel - [RFC v3 00/11] drm/nouveau: Introduce CRC support for gf119+

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Date:   Fri, 17 Apr 2020 15:40:47 -0400
From:   Lyude Paul <lyude@...hat.com>
To:     dri-devel@...ts.freedesktop.org
Cc:     Daniel Vetter <daniel@...ll.ch>, "David Airlie" <airlied@...ux.ie>,
        "Maarten Lankhorst" <maarten.lankhorst@...ux.intel.com>,
        linux-kernel@...r.kernel.org,
        "Thomas Zimmermann" <tzimmermann@...e.de>,
        "Maxime Ripard" <mripard@...nel.org>,
        "Liang Chen" <cl@...k-chips.com>,
        "Andrew Morton" <akpm@...ux-foundation.org>,
        "Thomas Gleixner" <tglx@...utronix.de>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        "Johannes Weiner" <hannes@...xchg.org>,
        "Ben Dooks" <ben.dooks@...ethink.co.uk>,
        "Petr Mladek" <pmladek@...e.com>, "Tejun Heo" <tj@...nel.org>,
        "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
        "Lyude Paul" <lyude@...hat.com>,
        "Suren Baghdasaryan" <surenb@...gle.com>,
        nouveau@...ts.freedesktop.org, "Ben Skeggs" <bskeggs@...hat.com>,
        "Ilia Mirkin" <imirkin@...m.mit.edu>,
        "Peteris Rudzusiks" <peteris.rudzusiks@...il.com>,
        Christian König <christian.koenig@....com>,
        "Gerd Hoffmann" <kraxel@...hat.com>,
        "Sam Ravnborg" <sam@...nborg.org>,
        "Alex Deucher" <alexander.deucher@....com>,
        "Pankaj Bharadiya" <pankaj.laxminarayan.bharadiya@...el.com>,
        "Takashi Iwai" <tiwai@...e.de>,
        "Sean Paul" <seanpaul@...omium.org>,
        Ville Syrjälä 
        <ville.syrjala@...ux.intel.com>,
        "Jani Nikula" <jani.nikula@...el.com>,
        "Nicholas Kazlauskas" <nicholas.kazlauskas@....com>,
        "Kate Stewart" <kstewart@...uxfoundation.org>
Subject: [RFC v3 00/11] drm/nouveau: Introduce CRC support for gf119+

Nvidia released some documentation on how CRC support works on their
GPUs, hooray!

So: this patch series implements said CRC support in nouveau, along with
adding some special debugfs interfaces for some relevant igt-gpu-tools
tests that we'll be sending in just a short bit.

This additionally adds a feature that Ville Syrjälä came up with: vblank
works. Basically, this is just a generic DRM interface that allows for
scheduling high-priority workers that start on a given vblank interrupt.
Note that while we're currently only using this in nouveau, Intel has
plans to use this for i915 as well (hence why they came up with it!).

And finally: in order to implement the last feature, we expose some new
functions in the kernel's kthread_worker infrastructure so that we can
de-complicate our implementation of this.

Anyway-welcome to the future! :)

Major changes since v2:
* Use kthread_worker instead of kthreadd for vblank workers
* Don't check debugfs return values

Lyude Paul (11):
  drm/vblank: Register drmm cleanup action once per drm_vblank_crtc
  kthread: Introduce __kthread_queue_work()
  drm/vblank: Add vblank works
  drm/nouveau/kms/nv50-: Unroll error cleanup in nv50_head_create()
  drm/nouveau/kms/nv140-: Don't modify depth in state during atomic
    commit
  drm/nouveau/kms/nv50-: Fix disabling dithering
  drm/nouveau/kms/nv50-: s/harm/armh/g
  drm/nouveau/kms/nv140-: Track wndw mappings in nv50_head_atom
  drm/nouveau/kms/nv50-: Expose nv50_outp_atom in disp.h
  drm/nouveau/kms/nv50-: Move hard-coded object handles into header
  drm/nouveau/kms/nvd9-: Add CRC support

 drivers/gpu/drm/drm_vblank.c                | 314 ++++++++-
 drivers/gpu/drm/nouveau/dispnv04/crtc.c     |  25 +-
 drivers/gpu/drm/nouveau/dispnv50/Kbuild     |   4 +
 drivers/gpu/drm/nouveau/dispnv50/atom.h     |  21 +
 drivers/gpu/drm/nouveau/dispnv50/core.h     |   4 +
 drivers/gpu/drm/nouveau/dispnv50/core907d.c |   3 +
 drivers/gpu/drm/nouveau/dispnv50/core917d.c |   3 +
 drivers/gpu/drm/nouveau/dispnv50/corec37d.c |   3 +
 drivers/gpu/drm/nouveau/dispnv50/corec57d.c |   3 +
 drivers/gpu/drm/nouveau/dispnv50/crc.c      | 715 ++++++++++++++++++++
 drivers/gpu/drm/nouveau/dispnv50/crc.h      | 125 ++++
 drivers/gpu/drm/nouveau/dispnv50/crc907d.c  | 139 ++++
 drivers/gpu/drm/nouveau/dispnv50/crcc37d.c  | 153 +++++
 drivers/gpu/drm/nouveau/dispnv50/disp.c     |  65 +-
 drivers/gpu/drm/nouveau/dispnv50/disp.h     |  24 +
 drivers/gpu/drm/nouveau/dispnv50/handles.h  |  16 +
 drivers/gpu/drm/nouveau/dispnv50/head.c     | 142 +++-
 drivers/gpu/drm/nouveau/dispnv50/head.h     |  13 +-
 drivers/gpu/drm/nouveau/dispnv50/head907d.c |  14 +-
 drivers/gpu/drm/nouveau/dispnv50/headc37d.c |  27 +-
 drivers/gpu/drm/nouveau/dispnv50/headc57d.c |  20 +-
 drivers/gpu/drm/nouveau/dispnv50/wndw.c     |  15 +-
 drivers/gpu/drm/nouveau/nouveau_display.c   |  60 +-
 include/drm/drm_vblank.h                    |  31 +
 include/linux/kthread.h                     |   3 +
 kernel/kthread.c                            |  34 +-
 26 files changed, 1831 insertions(+), 145 deletions(-)
 create mode 100644 drivers/gpu/drm/nouveau/dispnv50/crc.c
 create mode 100644 drivers/gpu/drm/nouveau/dispnv50/crc.h
 create mode 100644 drivers/gpu/drm/nouveau/dispnv50/crc907d.c
 create mode 100644 drivers/gpu/drm/nouveau/dispnv50/crcc37d.c
 create mode 100644 drivers/gpu/drm/nouveau/dispnv50/handles.h

-- 
2.25.1