drm/xe/xe2: Add workaround 18033852989

This workaround applies to RCS engine's context, hence added as
LRC workaround.

v2
- Fix commit description as lrc workaround instead of engine.(Lucas)

v3
- COMMON_SLICE_CHICKEN1 is a masked register, add XE_REG_OPTION_MASKED
flag. (Matt)

BSPEC: 55899

Cc: Matt Roper <matthew.d.roper@intel.com>
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240401163806.3821128-1-himal.prasad.ghimiray@intel.com

diff --git a/drivers/gpu/drm/xe/regs/xe_gt_regs.h b/drivers/gpu/drm/xe/regs/xe_gt_regs.h
index d5b21f0..6617c86 100644 (file)
--- a/drivers/gpu/drm/xe/regs/xe_gt_regs.h
+++ b/drivers/gpu/drm/xe/regs/xe_gt_regs.h
@@ -97,7 +97,8 @@
 #define CACHE_MODE_1                           XE_REG(0x7004, XE_REG_OPTION_MASKED)
 #define   MSAA_OPTIMIZATION_REDUC_DISABLE      REG_BIT(11)
 
-#define COMMON_SLICE_CHICKEN1                  XE_REG(0x7010)
+#define COMMON_SLICE_CHICKEN1                  XE_REG(0x7010, XE_REG_OPTION_MASKED)
+#define   DISABLE_BOTTOM_CLIP_RECTANGLE_TEST   REG_BIT(14)
 
 #define HIZ_CHICKEN                                    XE_REG(0x7018, XE_REG_OPTION_MASKED)
 #define   DG1_HZ_READ_SUPPRESSION_OPTIMIZATION_DISABLE REG_BIT(14)

diff --git a/drivers/gpu/drm/xe/xe_wa.c b/drivers/gpu/drm/xe/xe_wa.c
index 74b33a3..c904e55 100644 (file)
--- a/drivers/gpu/drm/xe/xe_wa.c
+++ b/drivers/gpu/drm/xe/xe_wa.c
@@ -579,6 +579,10 @@ static const struct xe_rtp_entry_sr lrc_was[] = {
                       ENGINE_CLASS(RENDER)),
          XE_RTP_ACTIONS(SET(INSTPM(RENDER_RING_BASE), ENABLE_SEMAPHORE_POLL_BIT))
        },
+       { XE_RTP_NAME("18033852989"),
+         XE_RTP_RULES(GRAPHICS_VERSION(2004), ENGINE_CLASS(RENDER)),
+         XE_RTP_ACTIONS(SET(COMMON_SLICE_CHICKEN1, DISABLE_BOTTOM_CLIP_RECTANGLE_TEST))
+       },
 
        {}
 };