CNL is the only platform with GRAPHICS_VER == 10. With its removal we
don't need to handle that version anymore.
Also we can now reduce the max number of slices: the call to
intel_sseu_set_info() with the highest number of slices comes from SKL
and BDW with 3 slices. Recent platforms actually increase the
number of subslices so the number of slices remain 1.
Signed-off-by: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
Reviewed-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_sseu.c | 79 ----------------------------
drivers/gpu/drm/i915/gt/intel_sseu.h | 2 +-
2 files changed, 1 insertion(+), 80 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.c b/drivers/gpu/drm/i915/gt/intel_sseu.c
index 367fd44b81c8..9542c3f3822a 100644
--- a/drivers/gpu/drm/i915/gt/intel_sseu.c
+++ b/drivers/gpu/drm/i915/gt/intel_sseu.c
@@ -188,83 +188,6 @@ static void gen11_sseu_info_init(struct intel_gt *gt)
sseu->has_eu_pg = 1;
}
-static void gen10_sseu_info_init(struct intel_gt *gt)
-{
- struct intel_uncore *uncore = gt->uncore;
- struct sseu_dev_info *sseu = >->info.sseu;
- const u32 fuse2 = intel_uncore_read(uncore, GEN8_FUSE2);
- const int eu_mask = 0xff;
- u32 subslice_mask, eu_en;
- int s, ss;
-
- intel_sseu_set_info(sseu, 6, 4, 8);
-
- sseu->slice_mask = (fuse2 & GEN10_F2_S_ENA_MASK) >>
- GEN10_F2_S_ENA_SHIFT;
-
- /* Slice0 */
- eu_en = ~intel_uncore_read(uncore, GEN8_EU_DISABLE0);
- for (ss = 0; ss < sseu->max_subslices; ss++)
- sseu_set_eus(sseu, 0, ss, (eu_en >> (8 * ss)) & eu_mask);
- /* Slice1 */
- sseu_set_eus(sseu, 1, 0, (eu_en >> 24) & eu_mask);
- eu_en = ~intel_uncore_read(uncore, GEN8_EU_DISABLE1);
- sseu_set_eus(sseu, 1, 1, eu_en & eu_mask);
- /* Slice2 */
- sseu_set_eus(sseu, 2, 0, (eu_en >> 8) & eu_mask);
- sseu_set_eus(sseu, 2, 1, (eu_en >> 16) & eu_mask);
- /* Slice3 */
- sseu_set_eus(sseu, 3, 0, (eu_en >> 24) & eu_mask);
- eu_en = ~intel_uncore_read(uncore, GEN8_EU_DISABLE2);
- sseu_set_eus(sseu, 3, 1, eu_en & eu_mask);
- /* Slice4 */
- sseu_set_eus(sseu, 4, 0, (eu_en >> 8) & eu_mask);
- sseu_set_eus(sseu, 4, 1, (eu_en >> 16) & eu_mask);
- /* Slice5 */
- sseu_set_eus(sseu, 5, 0, (eu_en >> 24) & eu_mask);
- eu_en = ~intel_uncore_read(uncore, GEN10_EU_DISABLE3);
- sseu_set_eus(sseu, 5, 1, eu_en & eu_mask);
-
- subslice_mask = (1 << 4) - 1;
- subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
- GEN10_F2_SS_DIS_SHIFT);
-
- for (s = 0; s < sseu->max_slices; s++) {
- u32 subslice_mask_with_eus = subslice_mask;
-
- for (ss = 0; ss < sseu->max_subslices; ss++) {
- if (sseu_get_eus(sseu, s, ss) == 0)
- subslice_mask_with_eus &= ~BIT(ss);
- }
-
- /*
- * Slice0 can have up to 3 subslices, but there are only 2 in
- * slice1/2.
- */
- intel_sseu_set_subslices(sseu, s, s == 0 ?
- subslice_mask_with_eus :
- subslice_mask_with_eus & 0x3);
- }
-
- sseu->eu_total = compute_eu_total(sseu);
-
- /*
- * CNL is expected to always have a uniform distribution
- * of EU across subslices with the exception that any one
- * EU in any one subslice may be fused off for die
- * recovery.
- */
- sseu->eu_per_subslice =
- intel_sseu_subslice_total(sseu) ?
- DIV_ROUND_UP(sseu->eu_total, intel_sseu_subslice_total(sseu)) :
- 0;
-
- /* No restrictions on Power Gating */
- sseu->has_slice_pg = 1;
- sseu->has_subslice_pg = 1;
- sseu->has_eu_pg = 1;
-}
-
static void cherryview_sseu_info_init(struct intel_gt *gt)
{
struct sseu_dev_info *sseu = >->info.sseu;
@@ -592,8 +515,6 @@ void intel_sseu_info_init(struct intel_gt *gt)
bdw_sseu_info_init(gt);
else if (GRAPHICS_VER(i915) == 9)
gen9_sseu_info_init(gt);
- else if (GRAPHICS_VER(i915) == 10)
- gen10_sseu_info_init(gt);
else if (GRAPHICS_VER(i915) == 11)
gen11_sseu_info_init(gt);
else if (GRAPHICS_VER(i915) >= 12)
diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.h b/drivers/gpu/drm/i915/gt/intel_sseu.h
index 4cd1a8a7298a..8d85ec05f610 100644
--- a/drivers/gpu/drm/i915/gt/intel_sseu.h
+++ b/drivers/gpu/drm/i915/gt/intel_sseu.h
@@ -15,7 +15,7 @@ struct drm_i915_private;
struct intel_gt;
struct drm_printer;
-#define GEN_MAX_SLICES (6) /* CNL upper bound */
+#define GEN_MAX_SLICES (3) /* SKL upper bound */
#define GEN_MAX_SUBSLICES (8) /* ICL upper bound */
#define GEN_SSEU_STRIDE(max_entries) DIV_ROUND_UP(max_entries, BITS_PER_BYTE)
#define GEN_MAX_SUBSLICE_STRIDE GEN_SSEU_STRIDE(GEN_MAX_SUBSLICES)
--
2.31.1
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