Ops... sorry... I am realizing that I sent again V6... please ignore this series!

Andi

On Thu, Jul 20, 2023 at 06:44:45PM +0200, Andi Shyti wrote:

Hi,

as there are new hardware directives, we need a little adaptation for the AUX invalidation sequence.

In this version we support all the engines affected by this change.

The stable backport has some challenges because the original patch that this series fixes has had more changes in between.

This patch is slowly exploding with code refactorings and features added and fixed.

Thanks a lot Nirmoy, Andrzej and Matt for your review and for the fruitful discussions!

Thanks, Andi

Changelog:

v5 -> v6

• Fixed ccs flush in the engines VE and BCS. They are sent as a separate command instead of added in the pipe control.
• Separated the CCS flusing in the pipe control patch with the quiescing of the memory. They were meant to be on separate patch already in the previous verision, but apparently I squashed them by mistake.

v4 -> v5

• The AUX CCS is added as a device property instead of checking against FLAT CCS. This adds the new HAS_AUX_CCS check (Patch 2, new).
• little and trivial refactoring here and there.
• extended the flags{0,1}/bit_group_{0,1} renaming to other functions.
• Created an intel_emit_pipe_control_cs() wrapper for submitting the pipe control.
• Quiesce memory for all the engines, not just RCS (Patch 6, new).
• The PIPE_CONTROL_CCS_FLUSH is added to all the engines.
• Remove redundant EMIT_FLUSH_CCS mode flag.
• Remove unnecessary NOOPs from the command streamer for invalidating the CCS table.
• Use INVALID_MMIO_REG and gen12_get_aux_inv_reg() instad of __MMIO(0) and reg.reg.
• Remove useless wrapper and just use gen12_get_aux_inv_reg().

v3 -> v4

• A trivial patch 3 is added to rename the flags with bit_group_{0,1} to align with the datasheet naming.
• Patch 4 fixes a confusion I made where the CCS flag was applied to the wrong bit group.

v2 -> v3

• added r-b from Nirmoy in patch 1 and 4.
• added patch 3 which enables the ccs_flush in the control pipe for mtl+ compute and render engines.
• added redundant checks in patch 2 for enabling the EMIT_FLUSH flag.

v1 -> v2

• add a clean up preliminary patch for the existing registers
• add support for more engines
• add the Fixes tag

Andi Shyti (7): drm/i915/gt: Cleanup aux invalidation registers drm/i915: Add the has_aux_ccs device property drm/i915/gt: Rename flags with bit_group_X according to the datasheet drm/i915/gt: Refactor intel_emit_pipe_control_cs() in a single function drm/i915/gt: Ensure memory quiesced before invalidation for all engines drm/i915/gt: Enable the CCS_FLUSH bit in the pipe control drm/i915/gt: Support aux invalidation on all engines

Jonathan Cavitt (2): drm/i915/gt: Ensure memory quiesced before invalidation drm/i915/gt: Poll aux invalidation register bit on invalidation

drivers/gpu/drm/i915/gt/gen8_engine_cs.c | 222 +++++++++++++------ drivers/gpu/drm/i915/gt/gen8_engine_cs.h | 21 +- drivers/gpu/drm/i915/gt/intel_gpu_commands.h | 2 + drivers/gpu/drm/i915/gt/intel_gt_regs.h | 16 +- drivers/gpu/drm/i915/gt/intel_lrc.c | 17 +- drivers/gpu/drm/i915/i915_drv.h | 1 + drivers/gpu/drm/i915/i915_pci.c | 5 +- drivers/gpu/drm/i915/intel_device_info.h | 1 + 8 files changed, 186 insertions(+), 99 deletions(-)

-- 2.40.1