[PATCH] drm/xe/xe3: Disable null query for anyhit shader

[Nitin Gote]

Set DIS_NULL_QUERY bit of RT_CTRL register to disable
null query for anyhit shader for Xe3 IP.

Reviewed-by: Gustavo Sousa <gustavo.sousa at intel.com>
Reviewed-by: Tejas Upadhyay <tejas.upadhyay at intel.com>
Signed-off-by: Nitin Gote <nitin.r.gote at intel.com>
---
Hi Matt and Gustavo,

On PTL, Default value of DIS_NULL_QUERY bit of RT_CTRL is '0' only.
Last time, I have incorrectly read a value.
So, this change is required as per request.

Parallely, I will request to update bspec properly with default
value and also proper entry for tuning.
 
Changes in v2:
  - Use xe3 IP and not ptl in commit title 
    as this is  not platform specific.(Gustavo Sousa)
  - Update a commit details properly (Matt)

 drivers/gpu/drm/xe/xe_tuning.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_tuning.c b/drivers/gpu/drm/xe/xe_tuning.c
index 49ddbda7cdef..6f2f3428b12e 100644
--- a/drivers/gpu/drm/xe/xe_tuning.c
+++ b/drivers/gpu/drm/xe/xe_tuning.c
@@ -98,6 +98,11 @@ static const struct xe_rtp_entry_sr engine_tunings[] = {
 		       ENGINE_CLASS(RENDER)),
 	  XE_RTP_ACTIONS(SET(SAMPLER_MODE, INDIRECT_STATE_BASE_ADDR_OVERRIDE))
 	},
+	{ XE_RTP_NAME("Tuning: Disable NULL query for Anyhit Shader"),
+	  XE_RTP_RULES(GRAPHICS_VERSION_RANGE(3000, 3001),
+		       FUNC(xe_rtp_match_first_render_or_compute)),
+	  XE_RTP_ACTIONS(SET(RT_CTRL, DIS_NULL_QUERY))
+	},
 };
 
 static const struct xe_rtp_entry_sr lrc_tunings[] = {
-- 
2.25.1