[0/5] Introduce the GSC CS

Message

Daniele Ceraolo Spurio Oct. 27, 2022, 10:15 p.m. UTC

Starting on MTL, the GSC microcontroller resides inside the media GT
and the driver can communicate with it via a new Command Streamer, the
GSC CS. As a first step in supporting the GSC integration within the
media GT, this series adds the required defines and basic support for
this CS. Note that, given that the only user of this CS is i915 itself,
we don't need to expose it to userspace.

The CS has been purposely not added to the engine mask for MTL yet,
because it is only used in conjunction with the GSC FW, so there is
nothing we can do with it until we add support for the FW, which will
come as a separate next step.

Cc: Matt Roper <[e-mail]>
Cc: Rodrigo Vivi <[e-mail]>

Daniele Ceraolo Spurio (5):
  drm/i915/mtl: add initial definitions for GSC CS
  drm/i915/mtl: pass the GSC CS info to the GuC
  drm/i915/mtl: add GSC CS interrupt support
  drm/i915/mtl: add GSC CS reset support
  drm/i915/mtl: don't expose GSC command streamer to the user

 drivers/gpu/drm/i915/gt/intel_engine_cs.c    |  9 +++
 drivers/gpu/drm/i915/gt/intel_engine_types.h |  1 +
 drivers/gpu/drm/i915/gt/intel_engine_user.c  |  5 ++
 drivers/gpu/drm/i915/gt/intel_gt_irq.c       | 78 +++++++++++---------
 drivers/gpu/drm/i915/gt/intel_gt_regs.h      |  1 +
 drivers/gpu/drm/i915/gt/uc/intel_guc_ads.c   | 11 ++-
 drivers/gpu/drm/i915/gt/uc/intel_guc_fwif.h  |  7 +-
 drivers/gpu/drm/i915/i915_reg.h              |  1 +
 8 files changed, 70 insertions(+), 43 deletions(-)