> -----Original Message-----
> From: Gote, Nitin R <[email protected]>
> Sent: Tuesday, July 30, 2024 8:33 PM
> To: [email protected]; Upadhyay, Tejas
> <[email protected]>; [email protected]; Roper, Matthew D
> <[email protected]>
> Cc: Shyti, Andi <[email protected]>; Wilson, Chris P
> <[email protected]>; Gote, Nitin R <[email protected]>
> Subject: [PATCH v3] drm/i915: Add Wa_14019789679
>
> Wa_14019789679 implementation for MTL, ARL and DG2.
>
> v2: Corrected condition
>
> v3:
> - Fix indentation (Jani Nikula)
> - dword size should be 0x1 and
> initialize dword to 0 instead of MI_NOOP (Tejas)
> - Use IS_GFX_GT_IP_RANGE() (Tejas)
>
> Bspec: 47083
>
> Signed-off-by: Nitin Gote <[email protected]>
> ---
> drivers/gpu/drm/i915/gt/intel_gpu_commands.h | 1 +
> drivers/gpu/drm/i915/gt/intel_workarounds.c | 14 +++++++++++++-
> 2 files changed, 14 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/gt/intel_gpu_commands.h
> b/drivers/gpu/drm/i915/gt/intel_gpu_commands.h
> index 2bd8d98d2110..7eaf7eddd25b 100644
> --- a/drivers/gpu/drm/i915/gt/intel_gpu_commands.h
> +++ b/drivers/gpu/drm/i915/gt/intel_gpu_commands.h
> @@ -220,6 +220,7 @@
> #define GFX_OP_DESTBUFFER_INFO
> ((0x3<<29)|(0x1d<<24)|(0x8e<<16)|1)
> #define GFX_OP_DRAWRECT_INFO
> ((0x3<<29)|(0x1d<<24)|(0x80<<16)|(0x3))
> #define GFX_OP_DRAWRECT_INFO_I965 ((0x7900<<16)|0x2)
> +#define CMD_3DSTATE_MESH_CONTROL ((0x3 << 29) | (0x3 << 27) | (0x0 <<
> +24) | (0x77 << 16) | (0x1))
>
> #define XY_CTRL_SURF_INSTR_SIZE 5
> #define MI_FLUSH_DW_SIZE 3
> diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c
> b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> index 09a287c1aedd..d942707381be 100644
> --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c
> +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c
> @@ -974,7 +974,12 @@ int intel_engine_emit_ctx_wa(struct i915_request
> *rq)
> if (ret)
> return ret;
>
> - cs = intel_ring_begin(rq, (wal->count * 2 + 2));
> + if (IS_GFX_GT_IP_RANGE(rq->engine->gt, IP_VER(12, 70), IP_VER(12,
> 74)) ||
> + IS_DG2(rq->i915))
You might also need to put check for engine as well, looks like it applies to
RCS only.
Tejas
> + cs = intel_ring_begin(rq, (wal->count * 2 + 4));
> + else
> + cs = intel_ring_begin(rq, (wal->count * 2 + 2));
> +
> if (IS_ERR(cs))
> return PTR_ERR(cs);
>
> @@ -1004,6 +1009,13 @@ int intel_engine_emit_ctx_wa(struct i915_request
> *rq)
> }
> *cs++ = MI_NOOP;
>
> + /* Wa_14019789679 */
> + if (IS_GFX_GT_IP_RANGE(rq->engine->gt, IP_VER(12, 70), IP_VER(12,
> 74)) ||
> + IS_DG2(rq->i915)) {
> + *cs++ = CMD_3DSTATE_MESH_CONTROL;
> + *cs++ = 0;
> + }
> +
> intel_uncore_forcewake_put__locked(uncore, fw);
> spin_unlock(&uncore->lock);
> intel_gt_mcr_unlock(wal->gt, flags);
> --
> 2.25.1
