drm/i915/dg2: Report INSTDONE_GEOM values in error state

Xe_HPG adds some additional INSTDONE_GEOM debug registers; the Mesa team
has indicated that having these reported in the error state would be
useful for debugging GPU hangs.  These registers are replicated per-DSS
with gslice steering.

Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Acked-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Matt Atwood <matthew.s.atwood@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210805163647.801064-4-matthew.d.roper@intel.com

drivers/gpu/drm/i915/gt/intel_engine_cs.c

@@ -1202,6 +1202,13 @@ void intel_engine_get_instdone(const struct intel_engine_cs *engine,
 							  GEN7_ROW_INSTDONE);
 			}
 		}
+
+		if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 55)) {
+			for_each_instdone_gslice_dss_xehp(i915, sseu, iter, slice, subslice)
+				instdone->geom_svg[slice][subslice] =
+					read_subslice_reg(engine, slice, subslice,
+							  XEHPG_INSTDONE_GEOM_SVG);
+		}
 	} else if (GRAPHICS_VER(i915) >= 7) {
 		instdone->instdone =
 			intel_uncore_read(uncore, RING_INSTDONE(mmio_base));

drivers/gpu/drm/i915/gt/intel_engine_types.h

@@ -69,6 +69,9 @@ struct intel_instdone {
 	u32 slice_common_extra[2];
 	u32 sampler[GEN_MAX_GSLICES][I915_MAX_SUBSLICES];
 	u32 row[GEN_MAX_GSLICES][I915_MAX_SUBSLICES];
+
+	/* Added in XeHPG */
+	u32 geom_svg[GEN_MAX_GSLICES][I915_MAX_SUBSLICES];
 };
 
 /*

drivers/gpu/drm/i915/i915_gpu_error.c

@@ -431,6 +431,7 @@ static void error_print_instdone(struct drm_i915_error_state_buf *m,
 	const struct sseu_dev_info *sseu = &ee->engine->gt->info.sseu;
 	int slice;
 	int subslice;
+	int iter;
 
 	err_printf(m, "  INSTDONE: 0x%08x\n",
 		   ee->instdone.instdone);
@@ -445,8 +446,6 @@ static void error_print_instdone(struct drm_i915_error_state_buf *m,
 		return;
 
 	if (GRAPHICS_VER_FULL(m->i915) >= IP_VER(12, 50)) {
-		int iter;
-
 		for_each_instdone_gslice_dss_xehp(m->i915, sseu, iter, slice, subslice)
 			err_printf(m, "  SAMPLER_INSTDONE[%d][%d]: 0x%08x\n",
 				   slice, subslice,
@@ -471,6 +470,13 @@ static void error_print_instdone(struct drm_i915_error_state_buf *m,
 	if (GRAPHICS_VER(m->i915) < 12)
 		return;
 
+	if (GRAPHICS_VER_FULL(m->i915) >= IP_VER(12, 55)) {
+		for_each_instdone_gslice_dss_xehp(m->i915, sseu, iter, slice, subslice)
+			err_printf(m, "  GEOM_SVGUNIT_INSTDONE[%d][%d]: 0x%08x\n",
+				   slice, subslice,
+				   ee->instdone.geom_svg[slice][subslice]);
+	}
+
 	err_printf(m, "  SC_INSTDONE_EXTRA: 0x%08x\n",
 		   ee->instdone.slice_common_extra[0]);
 	err_printf(m, "  SC_INSTDONE_EXTRA2: 0x%08x\n",

drivers/gpu/drm/i915/i915_reg.h

@@ -2695,6 +2695,7 @@ static inline bool i915_mmio_reg_valid(i915_reg_t reg)
 #define GEN12_SC_INSTDONE_EXTRA2	_MMIO(0x7108)
 #define GEN7_SAMPLER_INSTDONE	_MMIO(0xe160)
 #define GEN7_ROW_INSTDONE	_MMIO(0xe164)
+#define XEHPG_INSTDONE_GEOM_SVG		_MMIO(0x666c)
 #define MCFG_MCR_SELECTOR		_MMIO(0xfd0)
 #define SF_MCR_SELECTOR			_MMIO(0xfd8)
 #define GEN8_MCR_SELECTOR		_MMIO(0xfdc)