[v4,0/1] Add sysfs interface to control class-of-service

Message

Kumar Valsan, Prathap Oct. 15, 2019, 7:31 a.m. UTC

For GEN11 MOCS are part of context register state. This means updating
CLOS also needs to update the context state of active contexts.

v4: 
- Make it explicit in the commit message that we want to set CLOS global
  on device (Chris)
- Fixe the Locking (Chris)
- Move the global configuration of contexts away from gt.(Chris)

v3: Rebase

v2: 
- Update the interface to use two sysfs files(Joonas)
- Gen12 PCode interface is not ready yet to read the way mask.
  So removed TGL support and added support for Gen11.
- Updating MOCS in Gen 11 also require changing the context image of
  existing contexts.
- Referred to gen8_configure_all_contexts() as suggested by Chris.

Prathap Kumar Valsan (1):
  drm/i915: Add sysfs interface to control class-of-service

 drivers/gpu/drm/i915/Makefile           |   1 +
 drivers/gpu/drm/i915/gt/intel_lrc.c     |   7 ++
 drivers/gpu/drm/i915/gt/intel_lrc_reg.h |   1 +
 drivers/gpu/drm/i915/gt/intel_mocs.c    | 115 +++++++++++++++++++++
 drivers/gpu/drm/i915/gt/intel_mocs.h    |   7 ++
 drivers/gpu/drm/i915/i915_clos.c        | 128 ++++++++++++++++++++++++
 drivers/gpu/drm/i915/i915_clos.h        |  15 +++
 drivers/gpu/drm/i915/i915_drv.h         |  10 ++
 drivers/gpu/drm/i915/i915_gem.c         |   3 +
 drivers/gpu/drm/i915/i915_reg.h         |   1 +
 drivers/gpu/drm/i915/i915_sysfs.c       | 105 +++++++++++++++++++
 11 files changed, 393 insertions(+)
 create mode 100644 drivers/gpu/drm/i915/i915_clos.c
 create mode 100644 drivers/gpu/drm/i915/i915_clos.h