[Intel-gfx] [PATCH 0/8] HuC Loading Patches

[Anusha Srivatsa]

The patches add HuC loading support. The driver builds a frame level
workload which is stored in the graphics memory. This workload is presented
to HuC for processing. The driver, therefore should first determine if the
HuC is enabled and also read the huC athentication status bit to determine
if HuC was successfully loaded. The GuC is required to authenticate the HuC.
The userspace patches that check for a fully loaded HuC firmware and use it
can be found at:

https://lists.freedesktop.org/archives/libva/2016-September/004554.html
https://lists.freedesktop.org/archives/libva/2016-September/004555.html

More information regarding the HuC, batch commands that configure the
HuC etc can be found at-
https://01.org/sites/default/files/documentation/intel-gfx-prm-osrc-skl-vol02a-commandreference-instructions-huc.pdf
https://www.x.org/docs/intel/CHV/intel-gfx-prm-osrc-chv-bsw-vol10-hevc.pdf

v2: rebased. Changed the code following the review comments.
v3: rebased. Organize code. Move contents of intel_huc.h to intel_uc.h.
Update function intel_huc_load(),intel_huc_init() and intel_uc_fw_fetch()
to accept dev_priv instead of dev.
v4: rebased. Remove intel_is_huc_valid() since it is called onoly once.
Refactor the code to reduce redundency. Remove fiels like uc_dev which
are no longer used.
v5: rebased. Beautify the code- remove comments that no longer hold
good, add newlines etc.
v6: rebased. Remove further redundency. Correct comments. Replace wait_for
with intel_wait_for_register() for optimisation purpose.Make fw_type an enum.
v7: rebased. Rename intel_huc_loader() to intel_huc(). Move intel_guc_auth_huc()
from intel_uc.c to intel_huc.c. Add return values to DRM_ERRORs.

Anusha Srivatsa (8):
  drm/i915/guc: Make the GuC fw loading helper functions general
  drm/i915/huc: Unified css_header struct for GuC and HuC
  drm/i915/huc: Add HuC fw loading support
  drm/i915/huc: Add BXT HuC Loading Support
  drm/i915/HuC: Add KBL huC loading Support
  drm/i915/huc: Add debugfs for HuC loading status check
  drm/i915/huc: Support HuC authentication
  drm/i915/get_params: Add HuC status to getparams

 drivers/gpu/drm/i915/Makefile              |   1 +
 drivers/gpu/drm/i915/i915_debugfs.c        |  43 +++-
 drivers/gpu/drm/i915/i915_drv.c            |  10 +
 drivers/gpu/drm/i915/i915_drv.h            |   2 +
 drivers/gpu/drm/i915/i915_guc_reg.h        |   6 +
 drivers/gpu/drm/i915/i915_guc_submission.c |   4 +-
 drivers/gpu/drm/i915/intel_guc_fwif.h      |  24 +-
 drivers/gpu/drm/i915/intel_guc_loader.c    | 196 +++++++++--------
 drivers/gpu/drm/i915/intel_huc.c           | 342 +++++++++++++++++++++++++++++
 drivers/gpu/drm/i915/intel_uc.h            |  60 +++--
 include/uapi/drm/i915_drm.h                |   1 +
 11 files changed, 569 insertions(+), 120 deletions(-)
 create mode 100644 drivers/gpu/drm/i915/intel_huc.c

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2.7.4