On Fri, Jul 21, 2023 at 06:15:10PM +0200, Andi Shyti wrote:
> Enable the CCS_FLUSH bit 13 in the control pipe for render and
> compute engines in platforms starting from Meteor Lake (BSPEC
> 43904 and 47112).
>
> Fixes: 972282c4cf24 ("drm/i915/gen12: Add aux table invalidate for all
> engines")
> Signed-off-by: Andi Shyti <andi.sh...@linux.intel.com>
> Cc: Jonathan Cavitt <jonathan.cav...@intel.com>
> Cc: Nirmoy Das <nirmoy....@intel.com>
> Cc: <sta...@vger.kernel.org> # v5.8+
Reviewed-by: Matt Roper <matthew.d.ro...@intel.com>
> ---
> drivers/gpu/drm/i915/gt/gen8_engine_cs.c | 7 +++++++
> drivers/gpu/drm/i915/gt/intel_gpu_commands.h | 1 +
> 2 files changed, 8 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
> b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
> index 5d2175e918dd2..139a7e69f5c4d 100644
> --- a/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
> +++ b/drivers/gpu/drm/i915/gt/gen8_engine_cs.c
> @@ -230,6 +230,13 @@ int gen12_emit_flush_rcs(struct i915_request *rq, u32
> mode)
>
> bit_group_0 |= PIPE_CONTROL0_HDC_PIPELINE_FLUSH;
>
> + /*
> + * When required, in MTL and beyond platforms we
> + * need to set the CCS_FLUSH bit in the pipe control
> + */
> + if (GRAPHICS_VER_FULL(rq->i915) >= IP_VER(12, 70))
> + bit_group_0 |= PIPE_CONTROL_CCS_FLUSH;
> +
> bit_group_1 |= PIPE_CONTROL_TILE_CACHE_FLUSH;
> bit_group_1 |= PIPE_CONTROL_FLUSH_L3;
> bit_group_1 |= PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH;
> diff --git a/drivers/gpu/drm/i915/gt/intel_gpu_commands.h
> b/drivers/gpu/drm/i915/gt/intel_gpu_commands.h
> index 5d143e2a8db03..5df7cce23197c 100644
> --- a/drivers/gpu/drm/i915/gt/intel_gpu_commands.h
> +++ b/drivers/gpu/drm/i915/gt/intel_gpu_commands.h
> @@ -299,6 +299,7 @@
> #define PIPE_CONTROL_QW_WRITE (1<<14)
> #define PIPE_CONTROL_POST_SYNC_OP_MASK (3<<14)
> #define PIPE_CONTROL_DEPTH_STALL (1<<13)
> +#define PIPE_CONTROL_CCS_FLUSH (1<<13) /* MTL+ */
> #define PIPE_CONTROL_WRITE_FLUSH (1<<12)
> #define PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH (1<<12) /* gen6+ */
> #define PIPE_CONTROL_INSTRUCTION_CACHE_INVALIDATE (1<<11) /* MBZ on ILK */
> --
> 2.40.1
>
--
Matt Roper
Graphics Software Engineer
Linux GPU Platform Enablement
Intel Corporation
