linux-kernel - [PATCH v4 0/4] new subsystem for compute accelerator devices

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Date:   Sat, 19 Nov 2022 22:44:31 +0200
From:   Oded Gabbay <ogabbay@...nel.org>
To:     David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org,
        Yuji Ishikawa <yuji2.ishikawa@...hiba.co.jp>,
        Jiho Chu <jiho.chu@...sung.com>,
        Daniel Stone <daniel@...ishbar.org>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        Jason Gunthorpe <jgg@...dia.com>,
        Jeffrey Hugo <quic_jhugo@...cinc.com>,
        Christoph Hellwig <hch@...radead.org>,
        Kevin Hilman <khilman@...libre.com>,
        Jagan Teki <jagan@...rulasolutions.com>,
        John Hubbard <jhubbard@...dia.com>,
        Alex Deucher <alexander.deucher@....com>,
        Jacek Lawrynowicz <jacek.lawrynowicz@...ux.intel.com>,
        Maciej Kwapulinski <maciej.kwapulinski@...ux.intel.com>,
        Christopher Friedt <chrisfriedt@...il.com>
Subject: [PATCH v4 0/4] new subsystem for compute accelerator devices

This is the fourth (and hopefully last) version of the patch-set to add the
new subsystem for compute accelerators. I removed the RFC headline as
I believe it is now ready for merging.

Compare to v3, this patch-set contains one additional patch that adds
documentation regarding the accel subsystem. I hope it's good enough for
this stage. In addition, there were few very minor fixes according to
comments received on v3.

The patches are in the following repo:
https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/accel.git/log/?h=accel_v4

As in v3, The HEAD of that branch is a commit adding a dummy driver that
registers an accel device using the new framework. This can be served
as a simple reference.

v1 cover letter:
https://lkml.org/lkml/2022/10/22/544

v2 cover letter:
https://lore.kernel.org/lkml/20221102203405.1797491-1-ogabbay@kernel.org/T/

v3 cover letter:
https://lore.kernel.org/lkml/20221106210225.2065371-1-ogabbay@kernel.org/T/

Thanks,
Oded.

Oded Gabbay (4):
  drivers/accel: define kconfig and register a new major
  accel: add dedicated minor for accelerator devices
  drm: initialize accel framework
  doc: add documentation for accel subsystem

 Documentation/accel/index.rst         |  17 ++
 Documentation/accel/introduction.rst  | 109 +++++++++
 Documentation/admin-guide/devices.txt |   5 +
 Documentation/subsystem-apis.rst      |   1 +
 MAINTAINERS                           |   9 +
 drivers/Kconfig                       |   2 +
 drivers/accel/Kconfig                 |  24 ++
 drivers/accel/drm_accel.c             | 323 ++++++++++++++++++++++++++
 drivers/gpu/drm/Makefile              |   1 +
 drivers/gpu/drm/drm_drv.c             | 102 +++++---
 drivers/gpu/drm/drm_file.c            |   2 +-
 drivers/gpu/drm/drm_sysfs.c           |  24 +-
 include/drm/drm_accel.h               |  97 ++++++++
 include/drm/drm_device.h              |   3 +
 include/drm/drm_drv.h                 |   8 +
 include/drm/drm_file.h                |  21 +-
 16 files changed, 711 insertions(+), 37 deletions(-)
 create mode 100644 Documentation/accel/index.rst
 create mode 100644 Documentation/accel/introduction.rst
 create mode 100644 drivers/accel/Kconfig
 create mode 100644 drivers/accel/drm_accel.c
 create mode 100644 include/drm/drm_accel.h

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2.25.1