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@intel.com Reviewed-by: Matt Roper matthew.d.roper@intel.com --- 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)