[PATCH V4 1/2] drm/xe/xe2lpm: Add permanent Wa_14020756599

[Tejas Upadhyay]

For xe2_lpm Wa_14020756599 is applied to all steppings and
when RCS is present on graphics GT.

V5(MattR):
  - Add more comments about new API
V4:
  - Make it part of lrc wa
  - Check for RCS as rtp rule
V3(MattR):
  - Rename rtp api name
  - Use MEDIA_VERx100
V2:
  - Remove engine filter video decode
  - Fix typo GRAPHICS/MEDIA/s - Himal

Reviewed-by: Matt Roper <matthew.d.roper at intel.com>
Signed-off-by: Tejas Upadhyay <tejas.upadhyay at intel.com>
---
 drivers/gpu/drm/xe/xe_rtp.c |  6 ++++++
 drivers/gpu/drm/xe/xe_rtp.h | 14 ++++++++++++++
 drivers/gpu/drm/xe/xe_wa.c  |  7 +++++++
 3 files changed, 27 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_rtp.c b/drivers/gpu/drm/xe/xe_rtp.c
index fb44cc7521d8..01c32a932780 100644
--- a/drivers/gpu/drm/xe/xe_rtp.c
+++ b/drivers/gpu/drm/xe/xe_rtp.c
@@ -323,3 +323,9 @@ bool xe_rtp_match_first_gslice_fused_off(const struct xe_gt *gt,
 
 	return dss >= dss_per_gslice;
 }
+
+bool xe_rtp_match_when_media2000(const struct xe_gt *gt,
+				 const struct xe_hw_engine *hwe)
+{
+	return (gt_to_xe(gt))->info.media_verx100 == 2000;
+}
diff --git a/drivers/gpu/drm/xe/xe_rtp.h b/drivers/gpu/drm/xe/xe_rtp.h
index 337b1ef1959c..a32645f5f80b 100644
--- a/drivers/gpu/drm/xe/xe_rtp.h
+++ b/drivers/gpu/drm/xe/xe_rtp.h
@@ -427,4 +427,18 @@ bool xe_rtp_match_first_render_or_compute(const struct xe_gt *gt,
 bool xe_rtp_match_first_gslice_fused_off(const struct xe_gt *gt,
 					 const struct xe_hw_engine *hwe);
 
+/*
+ * xe_rtp_match_when_media2000 - Match when media GT version 2000
+ *
+ * @gt: GT structure
+ * @hwe: Engine instance
+ *
+ * Its one of the case where we need to apply workaround on primary GT
+ * based on if media GT version 2000 is present. Thus this API will help
+ * us to match media version 2000.
+ *
+ * Returns: true if media GT version 2000, false otherwise.
+ */
+bool xe_rtp_match_when_media2000(const struct xe_gt *gt,
+				 const struct xe_hw_engine *hwe);
 #endif
diff --git a/drivers/gpu/drm/xe/xe_wa.c b/drivers/gpu/drm/xe/xe_wa.c
index 64bc595fc727..321ea100a491 100644
--- a/drivers/gpu/drm/xe/xe_wa.c
+++ b/drivers/gpu/drm/xe/xe_wa.c
@@ -701,6 +701,13 @@ static const struct xe_rtp_entry_sr lrc_was[] = {
 			     DIS_AUTOSTRIP))
 	},
 
+	/* Xe2_LPM */
+
+	{ XE_RTP_NAME("14020756599"),
+	  XE_RTP_RULES(ENGINE_CLASS(RENDER), FUNC(xe_rtp_match_when_media2000)),
+	  XE_RTP_ACTIONS(SET(WM_CHICKEN3, HIZ_PLANE_COMPRESSION_DIS))
+	},
+
 	{}
 };
 
-- 
2.25.1