[v4,0/4] GuC HWCONFIG with documentation

Message

Jordan Justen Feb. 9, 2022, 10:45 p.m. UTC

This is John/Rodrigo's 2 patches with some minor changes, and I added
2 patches.

"drm/i915/uapi: Add query for hwconfig blob" was changed:

 * Rename DRM_I915_QUERY_HWCONFIG_TABLE to DRM_I915_QUERY_HWCONFIG_BLOB
   as requested by Joonas.

 * Reword commit message

 * I added Acked-by to this patch, but this only applies in the
   context of this version of the patchset. If my changes are
   rejected, then please *do not* add my Acked-by to the other series.

   In particular, I do not want my Acked-by on the patch if the patch
   mentions the HWCONFIG format, but is not willing to add that to the
   actual uAPI.

   I also do not want my Acked-by on it if it mentions "consolidation"
   of this data. Since we are dealing with open source projects (aside
   from GuC), this doesn't seem appropriate.

"drm/i915/uapi: Add struct drm_i915_query_hwconfig_blob_item" adds a
struct to the uAPI and documents the return value for
DRM_I915_QUERY_HWCONFIG_BLOB. (Except, keys / values are still
deferred to the PRM.)

"drm/i915/guc: Verify hwconfig blob matches supported format" does the
simple verification of the blob to make sure it matches what the uAPI
documents.

v2:
 * Fix -Werror errors.
 * Rebase to drm-intel/for-linux-next instead of
   drm-intel/for-linux-next-gt, as this seems to be what CI wants.
 * Fix u32 -> __u32.
 * Add commit message for "Verify hwconfig blob" patch as requested by
   Tvrtko.
 * Reword text added to i915_drm.h as requested by Tvrtko. (Attempting
   to indicate the overall blob ends right at the last blob item.)

v3:
 * Add several changes suggested by Tvrtko in the "Verify hwconfig
   blob", along with some tweaks to i915_drm.h from the feedback for
   the same patch.

v4:
 * Rewrite verify_hwconfig_blob() to hopefully be clearer without
   relying on comments so much, and add various suggestions from
   Michal.
 * Michal also had some suggestions in John's "drm/i915/guc: Add fetch
   of hwconfig table" patch. I held off on making any of these changes
   in this version.

John Harrison (1):
  drm/i915/guc: Add fetch of hwconfig table

Jordan Justen (2):
  drm/i915/uapi: Add struct drm_i915_query_hwconfig_blob_item
  drm/i915/guc: Verify hwconfig blob matches supported format

Rodrigo Vivi (1):
  drm/i915/uapi: Add query for hwconfig blob

 drivers/gpu/drm/i915/Makefile                 |   1 +
 .../gpu/drm/i915/gt/uc/abi/guc_actions_abi.h  |   1 +
 .../gpu/drm/i915/gt/uc/abi/guc_errors_abi.h   |   4 +
 drivers/gpu/drm/i915/gt/uc/intel_guc.h        |   3 +
 .../gpu/drm/i915/gt/uc/intel_guc_hwconfig.c   | 193 ++++++++++++++++++
 .../gpu/drm/i915/gt/uc/intel_guc_hwconfig.h   |  19 ++
 drivers/gpu/drm/i915/gt/uc/intel_uc.c         |   6 +
 drivers/gpu/drm/i915/i915_query.c             |  23 +++
 include/uapi/drm/i915_drm.h                   |  36 ++++
 9 files changed, 286 insertions(+)
 create mode 100644 drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.c
 create mode 100644 drivers/gpu/drm/i915/gt/uc/intel_guc_hwconfig.h