diff options
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_sseu.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_sseu.c | 65 |
1 files changed, 47 insertions, 18 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.c b/drivers/gpu/drm/i915/gt/intel_sseu.c index bbd272943c3f..bdf09051b8a0 100644 --- a/drivers/gpu/drm/i915/gt/intel_sseu.c +++ b/drivers/gpu/drm/i915/gt/intel_sseu.c @@ -46,11 +46,11 @@ u32 intel_sseu_get_subslices(const struct sseu_dev_info *sseu, u8 slice) } void intel_sseu_set_subslices(struct sseu_dev_info *sseu, int slice, - u32 ss_mask) + u8 *subslice_mask, u32 ss_mask) { int offset = slice * sseu->ss_stride; - memcpy(&sseu->subslice_mask[offset], &ss_mask, sseu->ss_stride); + memcpy(&subslice_mask[offset], &ss_mask, sseu->ss_stride); } unsigned int @@ -100,14 +100,24 @@ static u16 compute_eu_total(const struct sseu_dev_info *sseu) return total; } -static void gen11_compute_sseu_info(struct sseu_dev_info *sseu, - u8 s_en, u32 ss_en, u16 eu_en) +static u32 get_ss_stride_mask(struct sseu_dev_info *sseu, u8 s, u32 ss_en) +{ + u32 ss_mask; + + ss_mask = ss_en >> (s * sseu->max_subslices); + ss_mask &= GENMASK(sseu->max_subslices - 1, 0); + + return ss_mask; +} + +static void gen11_compute_sseu_info(struct sseu_dev_info *sseu, u8 s_en, + u32 g_ss_en, u32 c_ss_en, u16 eu_en) { int s, ss; - /* ss_en represents entire subslice mask across all slices */ + /* g_ss_en/c_ss_en represent entire subslice mask across all slices */ GEM_BUG_ON(sseu->max_slices * sseu->max_subslices > - sizeof(ss_en) * BITS_PER_BYTE); + sizeof(g_ss_en) * BITS_PER_BYTE); for (s = 0; s < sseu->max_slices; s++) { if ((s_en & BIT(s)) == 0) @@ -115,7 +125,22 @@ static void gen11_compute_sseu_info(struct sseu_dev_info *sseu, sseu->slice_mask |= BIT(s); - intel_sseu_set_subslices(sseu, s, ss_en); + /* + * XeHP introduces the concept of compute vs geometry DSS. To + * reduce variation between GENs around subslice usage, store a + * mask for both the geometry and compute enabled masks since + * userspace will need to be able to query these masks + * independently. Also compute a total enabled subslice count + * for the purposes of selecting subslices to use in a + * particular GEM context. + */ + intel_sseu_set_subslices(sseu, s, sseu->compute_subslice_mask, + get_ss_stride_mask(sseu, s, c_ss_en)); + intel_sseu_set_subslices(sseu, s, sseu->geometry_subslice_mask, + get_ss_stride_mask(sseu, s, g_ss_en)); + intel_sseu_set_subslices(sseu, s, sseu->subslice_mask, + get_ss_stride_mask(sseu, s, + g_ss_en | c_ss_en)); for (ss = 0; ss < sseu->max_subslices; ss++) if (intel_sseu_has_subslice(sseu, s, ss)) @@ -129,7 +154,7 @@ static void gen12_sseu_info_init(struct intel_gt *gt) { struct sseu_dev_info *sseu = >->info.sseu; struct intel_uncore *uncore = gt->uncore; - u32 dss_en; + u32 g_dss_en, c_dss_en = 0; u16 eu_en = 0; u8 eu_en_fuse; u8 s_en; @@ -160,7 +185,9 @@ static void gen12_sseu_info_init(struct intel_gt *gt) s_en = intel_uncore_read(uncore, GEN11_GT_SLICE_ENABLE) & GEN11_GT_S_ENA_MASK; - dss_en = intel_uncore_read(uncore, GEN12_GT_DSS_ENABLE); + g_dss_en = intel_uncore_read(uncore, GEN12_GT_GEOMETRY_DSS_ENABLE); + if (GRAPHICS_VER_FULL(gt->i915) >= IP_VER(12, 50)) + c_dss_en = intel_uncore_read(uncore, GEN12_GT_COMPUTE_DSS_ENABLE); /* one bit per pair of EUs */ if (GRAPHICS_VER_FULL(gt->i915) >= IP_VER(12, 50)) @@ -173,7 +200,7 @@ static void gen12_sseu_info_init(struct intel_gt *gt) if (eu_en_fuse & BIT(eu)) eu_en |= BIT(eu * 2) | BIT(eu * 2 + 1); - gen11_compute_sseu_info(sseu, s_en, dss_en, eu_en); + gen11_compute_sseu_info(sseu, s_en, g_dss_en, c_dss_en, eu_en); /* TGL only supports slice-level power gating */ sseu->has_slice_pg = 1; @@ -199,7 +226,7 @@ static void gen11_sseu_info_init(struct intel_gt *gt) eu_en = ~(intel_uncore_read(uncore, GEN11_EU_DISABLE) & GEN11_EU_DIS_MASK); - gen11_compute_sseu_info(sseu, s_en, ss_en, eu_en); + gen11_compute_sseu_info(sseu, s_en, ss_en, 0, eu_en); /* ICL has no power gating restrictions. */ sseu->has_slice_pg = 1; @@ -240,7 +267,7 @@ static void cherryview_sseu_info_init(struct intel_gt *gt) sseu_set_eus(sseu, 0, 1, ~disabled_mask); } - intel_sseu_set_subslices(sseu, 0, subslice_mask); + intel_sseu_set_subslices(sseu, 0, sseu->subslice_mask, subslice_mask); sseu->eu_total = compute_eu_total(sseu); @@ -296,7 +323,8 @@ static void gen9_sseu_info_init(struct intel_gt *gt) /* skip disabled slice */ continue; - intel_sseu_set_subslices(sseu, s, subslice_mask); + intel_sseu_set_subslices(sseu, s, sseu->subslice_mask, + subslice_mask); eu_disable = intel_uncore_read(uncore, GEN9_EU_DISABLE(s)); for (ss = 0; ss < sseu->max_subslices; ss++) { @@ -408,7 +436,8 @@ static void bdw_sseu_info_init(struct intel_gt *gt) /* skip disabled slice */ continue; - intel_sseu_set_subslices(sseu, s, subslice_mask); + intel_sseu_set_subslices(sseu, s, sseu->subslice_mask, + subslice_mask); for (ss = 0; ss < sseu->max_subslices; ss++) { u8 eu_disabled_mask; @@ -485,10 +514,9 @@ static void hsw_sseu_info_init(struct intel_gt *gt) } fuse1 = intel_uncore_read(gt->uncore, HSW_PAVP_FUSE1); - switch ((fuse1 & HSW_F1_EU_DIS_MASK) >> HSW_F1_EU_DIS_SHIFT) { + switch (REG_FIELD_GET(HSW_F1_EU_DIS_MASK, fuse1)) { default: - MISSING_CASE((fuse1 & HSW_F1_EU_DIS_MASK) >> - HSW_F1_EU_DIS_SHIFT); + MISSING_CASE(REG_FIELD_GET(HSW_F1_EU_DIS_MASK, fuse1)); fallthrough; case HSW_F1_EU_DIS_10EUS: sseu->eu_per_subslice = 10; @@ -506,7 +534,8 @@ static void hsw_sseu_info_init(struct intel_gt *gt) sseu->eu_per_subslice); for (s = 0; s < sseu->max_slices; s++) { - intel_sseu_set_subslices(sseu, s, subslice_mask); + intel_sseu_set_subslices(sseu, s, sseu->subslice_mask, + subslice_mask); for (ss = 0; ss < sseu->max_subslices; ss++) { sseu_set_eus(sseu, s, ss, |