[v7,0/7] Introduce multitile support

Message

Andi Shyti March 18, 2022, 11:39 p.m. UTC

Hi,

This is the second series that prepares i915 to host multitile
platforms. It introduces the for_each_gt() macro that loops over
the tiles to perform per gt actions.

This patch is a combination of two patches developed originally
by Abdiel, who introduced some refactoring during probe, and then
Tvrtko has added the necessary tools to start using the various
tiles.

The second patch re-organises the sysfs interface to expose the
API for each of the GTs. I decided to prioritise this patch
over others to unblock Sujaritha for further development.

A third series will still follow this.

Thanks Michal and Andrzej for the reviews and support!

Thanks,
Andi

Patchwork: https://patchwork.freedesktop.org/series/98741/

Changelog
=========
v6 -> v7
 - fixed a mock selftest error by initializing i915->gt[0]
   (thanks Tvrtko!)
 - removed spurious file added by mistake (thanks Matt!)
 - improved commit log in patch 7 (thanks Suja!)

v5 -> v6
 - address all Michal and Andrzej's reviews that consist mainly
   in code refactoring.

v4 -> v5
 - fixed Michal's reviews.
 - the sysfs patches have been split in 3 parts to make reviews
   easier.
 - Sujaritha's patch on pm throttle has been queued.
 - INTEL_REGION_LMEM has been renamed to INTEL_REGION_LMEM_0
 - added the gt_is_root() helper
 - the sysfs files will be called intel_gt_sysfs_* instead of
   sysfs_gt_*

v3 -> v4
 - fixed Tvrtko's review:
    - remove the SYSFS_DEPRECATED_V2 mention from the commit log
    - reworded the error message when accessing deprecated files
    - errors in sysfs are printed as warnings as they are not
      fatal
    - the inline functions are moved to be out of line.
   and some other minor refactoring.

v2 -> v3
 - Added Matt and Sujaritha's r-b for patch 1 and 2.
 - Reworded the commit of patch 2 to underline the fact that the
   interface is useful also when used manually.

v1 -> v2
 - fixed a couple of coding style issues in patch 2.

Andi Shyti (5):
  drm/i915: Rename INTEL_REGION_LMEM with INTEL_REGION_LMEM_0
  drm/i915/gt: add gt_is_root() helper
  drm/i915/gt: create per-tile sysfs interface
  drm/i915/gt: Create per-tile RC6 sysfs interface
  drm/i915/gt: Create per-tile RPS sysfs interfaces

Sujaritha Sundaresan (1):
  drm/i915/gt: Add sysfs throttle frequency interfaces

Tvrtko Ursulin (1):
  drm/i915: Prepare for multiple GTs

 drivers/gpu/drm/i915/Makefile                 |   2 +
 drivers/gpu/drm/i915/display/intel_fb.c       |   2 +-
 drivers/gpu/drm/i915/display/intel_fb_pin.c   |   2 +-
 .../drm/i915/display/intel_plane_initial.c    |   2 +-
 drivers/gpu/drm/i915/gem/i915_gem_lmem.c      |   4 +-
 .../drm/i915/gem/selftests/i915_gem_dmabuf.c  |   6 +-
 .../drm/i915/gem/selftests/i915_gem_migrate.c |   8 +-
 drivers/gpu/drm/i915/gt/intel_gt.c            | 135 +++-
 drivers/gpu/drm/i915/gt/intel_gt.h            |  22 +-
 drivers/gpu/drm/i915/gt/intel_gt_pm.c         |   9 +-
 drivers/gpu/drm/i915/gt/intel_gt_sysfs.c      | 122 ++++
 drivers/gpu/drm/i915/gt/intel_gt_sysfs.h      |  34 +
 drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c   | 601 ++++++++++++++++++
 drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.h   |  15 +
 drivers/gpu/drm/i915/gt/intel_gt_types.h      |   7 +
 drivers/gpu/drm/i915/gt/intel_rps.c           |  18 +
 drivers/gpu/drm/i915/gt/intel_rps.h           |   4 +
 drivers/gpu/drm/i915/i915_driver.c            |  28 +-
 drivers/gpu/drm/i915/i915_drv.h               |   8 +
 drivers/gpu/drm/i915/i915_reg.h               |  11 +
 drivers/gpu/drm/i915/i915_sysfs.c             | 310 +--------
 drivers/gpu/drm/i915/i915_sysfs.h             |   3 +
 drivers/gpu/drm/i915/intel_memory_region.c    |   2 +-
 drivers/gpu/drm/i915/intel_memory_region.h    |   7 +-
 drivers/gpu/drm/i915/intel_uncore.c           |  11 +-
 drivers/gpu/drm/i915/intel_uncore.h           |   3 +-
 .../gpu/drm/i915/selftests/mock_gem_device.c  |  13 +-
 27 files changed, 1023 insertions(+), 366 deletions(-)
 create mode 100644 drivers/gpu/drm/i915/gt/intel_gt_sysfs.c
 create mode 100644 drivers/gpu/drm/i915/gt/intel_gt_sysfs.h
 create mode 100644 drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c
 create mode 100644 drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.h


base-commit: 76874531ffae41683316380bd6d6227bbba12148