[v2,0/3] Disable dynamic load balancing and support fixed balancing

Message

Andi Shyti Jan. 4, 2024, 2:35 p.m. UTC

Hi,

This series aims to disable the CCS hardware load balancing, as recommended by
hardware directives in Wa_16016805146.

In the meantime, we need to define and support a fixed CCS mode of balancing
that can be configured by the user.

Thanks,
Andi

Changelog:
==========
v1 -> v2:
 - update comment about how the user sets the ccs mode.

Andi Shyti (3):
  drm/i915/gt: Support fixed CCS mode
  drm/i915/gt: Allow user to set up the CSS mode
  drm/i915/gt: Disable HW load balancing for CCS

 drivers/gpu/drm/i915/Makefile               |   1 +
 drivers/gpu/drm/i915/gt/intel_gt.c          |   6 +
 drivers/gpu/drm/i915/gt/intel_gt_ccs_mode.c | 149 ++++++++++++++++++++
 drivers/gpu/drm/i915/gt/intel_gt_ccs_mode.h |  17 +++
 drivers/gpu/drm/i915/gt/intel_gt_regs.h     |  14 ++
 drivers/gpu/drm/i915/gt/intel_gt_sysfs.c    |   2 +
 drivers/gpu/drm/i915/gt/intel_gt_types.h    |  19 +++
 drivers/gpu/drm/i915/gt/intel_workarounds.c |   6 +
 drivers/gpu/drm/i915/i915_drv.h             |   2 +
 9 files changed, 216 insertions(+)
 create mode 100644 drivers/gpu/drm/i915/gt/intel_gt_ccs_mode.c
 create mode 100644 drivers/gpu/drm/i915/gt/intel_gt_ccs_mode.h