Keep all the SSEU code in the relevant file. The code has also been
updated to use intel_gt instead of dev_priv.
Based on an original patch by Sandeep.
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxxxxxxx>
Cc: Andi Shyti <andi.shyti@xxxxxxxxx>
Cc: Venkata Sandeep Dhanalakota <venkata.s.dhanalakota@xxxxxxxxx>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
drivers/gpu/drm/i915/gt/intel_gt.c | 1 +
drivers/gpu/drm/i915/gt/intel_sseu.c | 587 +++++++++++++++++++++++
drivers/gpu/drm/i915/gt/intel_sseu.h | 8 +
drivers/gpu/drm/i915/i915_debugfs.c | 2 +-
drivers/gpu/drm/i915/i915_gpu_error.c | 2 +-
drivers/gpu/drm/i915/intel_device_info.c | 584 +---------------------
drivers/gpu/drm/i915/intel_device_info.h | 2 -
7 files changed, 600 insertions(+), 586 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c
index d96c34802e2b..2c20fe693714 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt.c
@@ -47,6 +47,7 @@ void intel_gt_init_hw_early(struct intel_gt *gt, struct i915_ggtt *ggtt)
int intel_gt_init_mmio(struct intel_gt *gt)
{
intel_uc_init_mmio(>->uc);
+ intel_sseu_info_init(gt);
return intel_engines_init_mmio(gt);
}
diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.c b/drivers/gpu/drm/i915/gt/intel_sseu.c
index d173271c7397..006f9118b319 100644
--- a/drivers/gpu/drm/i915/gt/intel_sseu.c
+++ b/drivers/gpu/drm/i915/gt/intel_sseu.c
@@ -60,6 +60,548 @@ intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice)
return hweight32(intel_sseu_get_subslices(sseu, slice));
}
+static int sseu_eu_idx(const struct sseu_dev_info *sseu, int slice,
+ int subslice)
+{
+ int slice_stride = sseu->max_subslices * sseu->eu_stride;
+
+ return slice * slice_stride + subslice * sseu->eu_stride;
+}
+
+static u16 sseu_get_eus(const struct sseu_dev_info *sseu, int slice,
+ int subslice)
+{
+ int i, offset = sseu_eu_idx(sseu, slice, subslice);
+ u16 eu_mask = 0;
+
+ for (i = 0; i < sseu->eu_stride; i++) {
+ eu_mask |= ((u16)sseu->eu_mask[offset + i]) <<
+ (i * BITS_PER_BYTE);
+ }
+
+ return eu_mask;
+}
+
+static void sseu_set_eus(struct sseu_dev_info *sseu, int slice, int subslice,
+ u16 eu_mask)
+{
+ int i, offset = sseu_eu_idx(sseu, slice, subslice);
+
+ for (i = 0; i < sseu->eu_stride; i++) {
+ sseu->eu_mask[offset + i] =
+ (eu_mask >> (BITS_PER_BYTE * i)) & 0xff;
+ }
+}
+
+static u16 compute_eu_total(const struct sseu_dev_info *sseu)
+{
+ u16 i, total = 0;
+
+ for (i = 0; i < ARRAY_SIZE(sseu->eu_mask); i++)
+ total += hweight8(sseu->eu_mask[i]);
+
+ return total;
+}
+
+static void gen11_compute_sseu_info(struct sseu_dev_info *sseu,
+ u8 s_en, u32 ss_en, u16 eu_en)
+{
+ int s, ss;
+
+ /* ss_en represents entire subslice mask across all slices */
+ GEM_BUG_ON(sseu->max_slices * sseu->max_subslices >
+ sizeof(ss_en) * BITS_PER_BYTE);
+
+ for (s = 0; s < sseu->max_slices; s++) {
+ if ((s_en & BIT(s)) == 0)
+ continue;
+
+ sseu->slice_mask |= BIT(s);
+
+ intel_sseu_set_subslices(sseu, s, ss_en);
+
+ for (ss = 0; ss < sseu->max_subslices; ss++)
+ if (intel_sseu_has_subslice(sseu, s, ss))
+ sseu_set_eus(sseu, s, ss, eu_en);
+ }
+ sseu->eu_per_subslice = hweight16(eu_en);
+ sseu->eu_total = compute_eu_total(sseu);
+}
+
+static void gen12_sseu_info_init(struct intel_gt *gt)
+{
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(gt->i915)->sseu;
+ struct intel_uncore *uncore = gt->uncore;
+ u8 s_en;
+ u32 dss_en;
+ u16 eu_en = 0;
+ u8 eu_en_fuse;
+ int eu;
+
+ /*
+ * Gen12 has Dual-Subslices, which behave similarly to 2 gen11 SS.
+ * Instead of splitting these, provide userspace with an array
+ * of DSS to more closely represent the hardware resource.
+ */
+ intel_sseu_set_info(sseu, 1, 6, 16);
+
+ 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);
+
+ /* one bit per pair of EUs */
+ eu_en_fuse = ~(intel_uncore_read(uncore, GEN11_EU_DISABLE) &
+ GEN11_EU_DIS_MASK);
+ for (eu = 0; eu < sseu->max_eus_per_subslice / 2; eu++)
+ 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);
+
+ /* TGL only supports slice-level power gating */
+ sseu->has_slice_pg = 1;
+}
+
+static void gen11_sseu_info_init(struct intel_gt *gt)
+{
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(gt->i915)->sseu;
+ struct intel_uncore *uncore = gt->uncore;
+ u8 s_en;
+ u32 ss_en;
+ u8 eu_en;
+
+ if (IS_ELKHARTLAKE(gt->i915))
+ intel_sseu_set_info(sseu, 1, 4, 8);
+ else
+ intel_sseu_set_info(sseu, 1, 8, 8);
+
+ s_en = intel_uncore_read(uncore, GEN11_GT_SLICE_ENABLE) &
+ GEN11_GT_S_ENA_MASK;
+ ss_en = ~intel_uncore_read(uncore, GEN11_GT_SUBSLICE_DISABLE);
+
+ eu_en = ~(intel_uncore_read(uncore, GEN11_EU_DISABLE) &
+ GEN11_EU_DIS_MASK);
+
+ gen11_compute_sseu_info(sseu, s_en, ss_en, eu_en);
+
+ /* ICL has no power gating restrictions. */
+ sseu->has_slice_pg = 1;
+ sseu->has_subslice_pg = 1;
+ 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 = &RUNTIME_INFO(gt->i915)->sseu;
+ const u32 fuse2 = intel_uncore_read(uncore, GEN8_FUSE2);
+ int s, ss;
+ const int eu_mask = 0xff;
+ u32 subslice_mask, eu_en;
+
+ 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 = &RUNTIME_INFO(gt->i915)->sseu;
+ u32 fuse;
+ u8 subslice_mask = 0;
+
+ fuse = intel_uncore_read(gt->uncore, CHV_FUSE_GT);
+
+ sseu->slice_mask = BIT(0);
+ intel_sseu_set_info(sseu, 1, 2, 8);
+
+ if (!(fuse & CHV_FGT_DISABLE_SS0)) {
+ u8 disabled_mask =
+ ((fuse & CHV_FGT_EU_DIS_SS0_R0_MASK) >>
+ CHV_FGT_EU_DIS_SS0_R0_SHIFT) |
+ (((fuse & CHV_FGT_EU_DIS_SS0_R1_MASK) >>
+ CHV_FGT_EU_DIS_SS0_R1_SHIFT) << 4);
+
+ subslice_mask |= BIT(0);
+ sseu_set_eus(sseu, 0, 0, ~disabled_mask);
+ }
+
+ if (!(fuse & CHV_FGT_DISABLE_SS1)) {
+ u8 disabled_mask =
+ ((fuse & CHV_FGT_EU_DIS_SS1_R0_MASK) >>
+ CHV_FGT_EU_DIS_SS1_R0_SHIFT) |
+ (((fuse & CHV_FGT_EU_DIS_SS1_R1_MASK) >>
+ CHV_FGT_EU_DIS_SS1_R1_SHIFT) << 4);
+
+ subslice_mask |= BIT(1);
+ sseu_set_eus(sseu, 0, 1, ~disabled_mask);
+ }
+
+ intel_sseu_set_subslices(sseu, 0, subslice_mask);
+
+ sseu->eu_total = compute_eu_total(sseu);
+
+ /*
+ * CHV expected to always have a uniform distribution of EU
+ * across subslices.
+ */
+ sseu->eu_per_subslice = intel_sseu_subslice_total(sseu) ?
+ sseu->eu_total /
+ intel_sseu_subslice_total(sseu) :
+ 0;
+ /*
+ * CHV supports subslice power gating on devices with more than
+ * one subslice, and supports EU power gating on devices with
+ * more than one EU pair per subslice.
+ */
+ sseu->has_slice_pg = 0;
+ sseu->has_subslice_pg = intel_sseu_subslice_total(sseu) > 1;
+ sseu->has_eu_pg = (sseu->eu_per_subslice > 2);
+}
+
+static void gen9_sseu_info_init(struct intel_gt *gt)
+{
+ struct drm_i915_private *i915 = gt->i915;
+ struct intel_device_info *info = mkwrite_device_info(i915);
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(i915)->sseu;
+ struct intel_uncore *uncore = gt->uncore;
+ int s, ss;
+ u32 fuse2, eu_disable, subslice_mask;
+ const u8 eu_mask = 0xff;
+
+ fuse2 = intel_uncore_read(uncore, GEN8_FUSE2);
+ sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
+
+ /* BXT has a single slice and at most 3 subslices. */
+ intel_sseu_set_info(sseu, IS_GEN9_LP(i915) ? 1 : 3,
+ IS_GEN9_LP(i915) ? 3 : 4, 8);
+
+ /*
+ * The subslice disable field is global, i.e. it applies
+ * to each of the enabled slices.
+ */
+ subslice_mask = (1 << sseu->max_subslices) - 1;
+ subslice_mask &= ~((fuse2 & GEN9_F2_SS_DIS_MASK) >>
+ GEN9_F2_SS_DIS_SHIFT);
+
+ /*
+ * Iterate through enabled slices and subslices to
+ * count the total enabled EU.
+ */
+ for (s = 0; s < sseu->max_slices; s++) {
+ if (!(sseu->slice_mask & BIT(s)))
+ /* skip disabled slice */
+ continue;
+
+ intel_sseu_set_subslices(sseu, s, subslice_mask);
+
+ eu_disable = intel_uncore_read(uncore, GEN9_EU_DISABLE(s));
+ for (ss = 0; ss < sseu->max_subslices; ss++) {
+ int eu_per_ss;
+ u8 eu_disabled_mask;
+
+ if (!intel_sseu_has_subslice(sseu, s, ss))
+ /* skip disabled subslice */
+ continue;
+
+ eu_disabled_mask = (eu_disable >> (ss * 8)) & eu_mask;
+
+ sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
+
+ eu_per_ss = sseu->max_eus_per_subslice -
+ hweight8(eu_disabled_mask);
+
+ /*
+ * Record which subslice(s) has(have) 7 EUs. we
+ * can tune the hash used to spread work among
+ * subslices if they are unbalanced.
+ */
+ if (eu_per_ss == 7)
+ sseu->subslice_7eu[s] |= BIT(ss);
+ }
+ }
+
+ sseu->eu_total = compute_eu_total(sseu);
+
+ /*
+ * SKL 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. BXT is expected to be perfectly uniform in EU
+ * distribution.
+ */
+ sseu->eu_per_subslice = intel_sseu_subslice_total(sseu) ?
+ DIV_ROUND_UP(sseu->eu_total,
+ intel_sseu_subslice_total(sseu)) :
+ 0;
+ /*
+ * SKL+ supports slice power gating on devices with more than
+ * one slice, and supports EU power gating on devices with
+ * more than one EU pair per subslice. BXT+ supports subslice
+ * power gating on devices with more than one subslice, and
+ * supports EU power gating on devices with more than one EU
+ * pair per subslice.
+ */
+ sseu->has_slice_pg =
+ !IS_GEN9_LP(i915) && hweight8(sseu->slice_mask) > 1;
+ sseu->has_subslice_pg =
+ IS_GEN9_LP(i915) && intel_sseu_subslice_total(sseu) > 1;
+ sseu->has_eu_pg = sseu->eu_per_subslice > 2;
+
+ if (IS_GEN9_LP(i915)) {
+#define IS_SS_DISABLED(ss) (!(sseu->subslice_mask[0] & BIT(ss)))
+ info->has_pooled_eu = hweight8(sseu->subslice_mask[0]) == 3;
+
+ sseu->min_eu_in_pool = 0;
+ if (info->has_pooled_eu) {
+ if (IS_SS_DISABLED(2) || IS_SS_DISABLED(0))
+ sseu->min_eu_in_pool = 3;
+ else if (IS_SS_DISABLED(1))
+ sseu->min_eu_in_pool = 6;
+ else
+ sseu->min_eu_in_pool = 9;
+ }
+#undef IS_SS_DISABLED
+ }
+}
+
+static void bdw_sseu_info_init(struct intel_gt *gt)
+{
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(gt->i915)->sseu;
+ struct intel_uncore *uncore = gt->uncore;
+ int s, ss;
+ u32 fuse2, subslice_mask, eu_disable[3]; /* s_max */
+ u32 eu_disable0, eu_disable1, eu_disable2;
+
+ fuse2 = intel_uncore_read(uncore, GEN8_FUSE2);
+ sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
+ intel_sseu_set_info(sseu, 3, 3, 8);
+
+ /*
+ * The subslice disable field is global, i.e. it applies
+ * to each of the enabled slices.
+ */
+ subslice_mask = GENMASK(sseu->max_subslices - 1, 0);
+ subslice_mask &= ~((fuse2 & GEN8_F2_SS_DIS_MASK) >>
+ GEN8_F2_SS_DIS_SHIFT);
+ eu_disable0 = intel_uncore_read(uncore, GEN8_EU_DISABLE0);
+ eu_disable1 = intel_uncore_read(uncore, GEN8_EU_DISABLE1);
+ eu_disable2 = intel_uncore_read(uncore, GEN8_EU_DISABLE2);
+ eu_disable[0] = eu_disable0 & GEN8_EU_DIS0_S0_MASK;
+ eu_disable[1] = (eu_disable0 >> GEN8_EU_DIS0_S1_SHIFT) |
+ ((eu_disable1 & GEN8_EU_DIS1_S1_MASK) <<
+ (32 - GEN8_EU_DIS0_S1_SHIFT));
+ eu_disable[2] = (eu_disable1 >> GEN8_EU_DIS1_S2_SHIFT) |
+ ((eu_disable2 & GEN8_EU_DIS2_S2_MASK) <<
+ (32 - GEN8_EU_DIS1_S2_SHIFT));
+
+ /*
+ * Iterate through enabled slices and subslices to
+ * count the total enabled EU.
+ */
+ for (s = 0; s < sseu->max_slices; s++) {
+ if (!(sseu->slice_mask & BIT(s)))
+ /* skip disabled slice */
+ continue;
+
+ intel_sseu_set_subslices(sseu, s, subslice_mask);
+
+ for (ss = 0; ss < sseu->max_subslices; ss++) {
+ u8 eu_disabled_mask;
+ u32 n_disabled;
+
+ if (!intel_sseu_has_subslice(sseu, s, ss))
+ /* skip disabled subslice */
+ continue;
+
+ eu_disabled_mask =
+ eu_disable[s] >> (ss * sseu->max_eus_per_subslice);
+
+ sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
+
+ n_disabled = hweight8(eu_disabled_mask);
+
+ /*
+ * Record which subslices have 7 EUs.
+ */
+ if (sseu->max_eus_per_subslice - n_disabled == 7)
+ sseu->subslice_7eu[s] |= 1 << ss;
+ }
+ }
+
+ sseu->eu_total = compute_eu_total(sseu);
+
+ /*
+ * BDW 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;
+
+ /*
+ * BDW supports slice power gating on devices with more than
+ * one slice.
+ */
+ sseu->has_slice_pg = hweight8(sseu->slice_mask) > 1;
+ sseu->has_subslice_pg = 0;
+ sseu->has_eu_pg = 0;
+}
+
+static void hsw_sseu_info_init(struct intel_gt *gt)
+{
+ struct drm_i915_private *i915 = gt->i915;
+ struct sseu_dev_info *sseu = &RUNTIME_INFO(gt->i915)->sseu;
+ u32 fuse1;
+ u8 subslice_mask = 0;
+ int s, ss;
+
+ /*
+ * There isn't a register to tell us how many slices/subslices. We
+ * work off the PCI-ids here.
+ */
+ switch (INTEL_INFO(i915)->gt) {
+ default:
+ MISSING_CASE(INTEL_INFO(i915)->gt);
+ /* fall through */
+ case 1:
+ sseu->slice_mask = BIT(0);
+ subslice_mask = BIT(0);
+ break;
+ case 2:
+ sseu->slice_mask = BIT(0);
+ subslice_mask = BIT(0) | BIT(1);
+ break;
+ case 3:
+ sseu->slice_mask = BIT(0) | BIT(1);
+ subslice_mask = BIT(0) | BIT(1);
+ break;
+ }
+
+ fuse1 = intel_uncore_read(gt->uncore, HSW_PAVP_FUSE1);
+ switch ((fuse1 & HSW_F1_EU_DIS_MASK) >> HSW_F1_EU_DIS_SHIFT) {
+ default:
+ MISSING_CASE((fuse1 & HSW_F1_EU_DIS_MASK) >>
+ HSW_F1_EU_DIS_SHIFT);
+ /* fall through */
+ case HSW_F1_EU_DIS_10EUS:
+ sseu->eu_per_subslice = 10;
+ break;
+ case HSW_F1_EU_DIS_8EUS:
+ sseu->eu_per_subslice = 8;
+ break;
+ case HSW_F1_EU_DIS_6EUS:
+ sseu->eu_per_subslice = 6;
+ break;
+ }
+
+ intel_sseu_set_info(sseu, hweight8(sseu->slice_mask),
+ hweight8(subslice_mask),
+ sseu->eu_per_subslice);
+
+ for (s = 0; s < sseu->max_slices; s++) {
+ intel_sseu_set_subslices(sseu, s, subslice_mask);
+
+ for (ss = 0; ss < sseu->max_subslices; ss++) {
+ sseu_set_eus(sseu, s, ss,
+ (1UL << sseu->eu_per_subslice) - 1);
+ }
+ }
+
+ sseu->eu_total = compute_eu_total(sseu);
+
+ /* No powergating for you. */
+ sseu->has_slice_pg = 0;
+ sseu->has_subslice_pg = 0;
+ sseu->has_eu_pg = 0;
+}
+
+void intel_sseu_info_init(struct intel_gt *gt)
+{
+ struct drm_i915_private *i915 = gt->i915;
+
+ if (IS_HASWELL(i915))
+ hsw_sseu_info_init(gt);
+ else if (IS_CHERRYVIEW(i915))
+ cherryview_sseu_info_init(gt);
+ else if (IS_BROADWELL(i915))
+ bdw_sseu_info_init(gt);
+ else if (IS_GEN(i915, 9))
+ gen9_sseu_info_init(gt);
+ else if (IS_GEN(i915, 10))
+ gen10_sseu_info_init(gt);
+ else if (IS_GEN(i915, 11))
+ gen11_sseu_info_init(gt);
+ else if (INTEL_GEN(i915) >= 12)
+ gen12_sseu_info_init(gt);
+}
+
u32 intel_sseu_make_rpcs(struct drm_i915_private *i915,
const struct intel_sseu *req_sseu)
{
@@ -173,3 +715,48 @@ u32 intel_sseu_make_rpcs(struct drm_i915_private *i915,
return rpcs;
}
+
+void intel_sseu_dump(const struct sseu_dev_info *sseu, struct drm_printer *p)
+{
+ int s;
+
+ drm_printf(p, "slice total: %u, mask=%04x\n",
+ hweight8(sseu->slice_mask), sseu->slice_mask);
+ drm_printf(p, "subslice total: %u\n", intel_sseu_subslice_total(sseu));
+ for (s = 0; s < sseu->max_slices; s++) {
+ drm_printf(p, "slice%d: %u subslices, mask=%08x\n",
+ s, intel_sseu_subslices_per_slice(sseu, s),
+ intel_sseu_get_subslices(sseu, s));
+ }
+ drm_printf(p, "EU total: %u\n", sseu->eu_total);
+ drm_printf(p, "EU per subslice: %u\n", sseu->eu_per_subslice);
+ drm_printf(p, "has slice power gating: %s\n",
+ yesno(sseu->has_slice_pg));
+ drm_printf(p, "has subslice power gating: %s\n",
+ yesno(sseu->has_subslice_pg));
+ drm_printf(p, "has EU power gating: %s\n", yesno(sseu->has_eu_pg));
+}
+
+void intel_sseu_print_topology(const struct sseu_dev_info *sseu,
+ struct drm_printer *p)
+{
+ int s, ss;
+
+ if (sseu->max_slices == 0) {
+ drm_printf(p, "Unavailable\n");
+ return;
+ }
+
+ for (s = 0; s < sseu->max_slices; s++) {
+ drm_printf(p, "slice%d: %u subslice(s) (0x%08x):\n",
+ s, intel_sseu_subslices_per_slice(sseu, s),
+ intel_sseu_get_subslices(sseu, s));
+
+ for (ss = 0; ss < sseu->max_subslices; ss++) {
+ u16 enabled_eus = sseu_get_eus(sseu, s, ss);
+
+ drm_printf(p, "\tsubslice%d: %u EUs (0x%hx)\n",
+ ss, hweight16(enabled_eus), enabled_eus);
+ }
+ }
+}
diff --git a/drivers/gpu/drm/i915/gt/intel_sseu.h b/drivers/gpu/drm/i915/gt/intel_sseu.h
index d1d225204f09..f9c007f001e7 100644
--- a/drivers/gpu/drm/i915/gt/intel_sseu.h
+++ b/drivers/gpu/drm/i915/gt/intel_sseu.h
@@ -13,6 +13,8 @@
#include "i915_gem.h"
struct drm_i915_private;
+struct intel_gt;
+struct drm_printer;
#define GEN_MAX_SLICES (6) /* CNL upper bound */
#define GEN_MAX_SUBSLICES (8) /* ICL upper bound */
@@ -94,7 +96,13 @@ 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);
+void intel_sseu_info_init(struct intel_gt *gt);
+
u32 intel_sseu_make_rpcs(struct drm_i915_private *i915,
const struct intel_sseu *req_sseu);
+void intel_sseu_dump(const struct sseu_dev_info *sseu, struct drm_printer *p);
+void intel_sseu_print_topology(const struct sseu_dev_info *sseu,
+ struct drm_printer *p);
+
#endif /* __INTEL_SSEU_H__ */
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 41ca8ff2aa16..bfba0dff0b85 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1327,7 +1327,7 @@ static int i915_rcs_topology(struct seq_file *m, void *unused)
struct drm_i915_private *dev_priv = node_to_i915(m->private);
struct drm_printer p = drm_seq_file_printer(m);
- intel_device_info_print_topology(&RUNTIME_INFO(dev_priv)->sseu, &p);
+ intel_sseu_print_topology(&RUNTIME_INFO(dev_priv)->sseu, &p);
return 0;
}
diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 9cb9aa39c33d..99b4a0261b13 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -626,7 +626,7 @@ static void err_print_capabilities(struct drm_i915_error_state_buf *m,
intel_device_info_print_static(&error->device_info, &p);
intel_device_info_print_runtime(&error->runtime_info, &p);
- intel_device_info_print_topology(&error->runtime_info.sseu, &p);
+ intel_sseu_print_topology(&error->runtime_info.sseu, &p);
intel_gt_info_print(&error->gt->info, &p);
intel_driver_caps_print(&error->driver_caps, &p);
}
diff --git a/drivers/gpu/drm/i915/intel_device_info.c b/drivers/gpu/drm/i915/intel_device_info.c
index a362a66fce11..d8daf224cbd3 100644
--- a/drivers/gpu/drm/i915/intel_device_info.c
+++ b/drivers/gpu/drm/i915/intel_device_info.c
@@ -29,6 +29,7 @@
#include "display/intel_de.h"
#include "intel_device_info.h"
#include "i915_drv.h"
+#include "gt/intel_sseu.h"
#define PLATFORM_NAME(x) [INTEL_##x] = #x
static const char * const platform_names[] = {
@@ -111,581 +112,16 @@ void intel_device_info_print_static(const struct intel_device_info *info,
#undef PRINT_FLAG
}
-static void sseu_dump(const struct sseu_dev_info *sseu, struct drm_printer *p)
-{
- int s;
-
- drm_printf(p, "slice total: %u, mask=%04x\n",
- hweight8(sseu->slice_mask), sseu->slice_mask);
- drm_printf(p, "subslice total: %u\n", intel_sseu_subslice_total(sseu));
- for (s = 0; s < sseu->max_slices; s++) {
- drm_printf(p, "slice%d: %u subslices, mask=%08x\n",
- s, intel_sseu_subslices_per_slice(sseu, s),
- intel_sseu_get_subslices(sseu, s));
- }
- drm_printf(p, "EU total: %u\n", sseu->eu_total);
- drm_printf(p, "EU per subslice: %u\n", sseu->eu_per_subslice);
- drm_printf(p, "has slice power gating: %s\n",
- yesno(sseu->has_slice_pg));
- drm_printf(p, "has subslice power gating: %s\n",
- yesno(sseu->has_subslice_pg));
- drm_printf(p, "has EU power gating: %s\n", yesno(sseu->has_eu_pg));
-}
-
void intel_device_info_print_runtime(const struct intel_runtime_info *info,
struct drm_printer *p)
{
- sseu_dump(&info->sseu, p);
+ intel_sseu_dump(&info->sseu, p);
drm_printf(p, "rawclk rate: %u kHz\n", info->rawclk_freq);
drm_printf(p, "CS timestamp frequency: %u Hz\n",
info->cs_timestamp_frequency_hz);
}
-static int sseu_eu_idx(const struct sseu_dev_info *sseu, int slice,
- int subslice)
-{
- int slice_stride = sseu->max_subslices * sseu->eu_stride;
-
- return slice * slice_stride + subslice * sseu->eu_stride;
-}
-
-static u16 sseu_get_eus(const struct sseu_dev_info *sseu, int slice,
- int subslice)
-{
- int i, offset = sseu_eu_idx(sseu, slice, subslice);
- u16 eu_mask = 0;
-
- for (i = 0; i < sseu->eu_stride; i++) {
- eu_mask |= ((u16)sseu->eu_mask[offset + i]) <<
- (i * BITS_PER_BYTE);
- }
-
- return eu_mask;
-}
-
-static void sseu_set_eus(struct sseu_dev_info *sseu, int slice, int subslice,
- u16 eu_mask)
-{
- int i, offset = sseu_eu_idx(sseu, slice, subslice);
-
- for (i = 0; i < sseu->eu_stride; i++) {
- sseu->eu_mask[offset + i] =
- (eu_mask >> (BITS_PER_BYTE * i)) & 0xff;
- }
-}
-
-void intel_device_info_print_topology(const struct sseu_dev_info *sseu,
- struct drm_printer *p)
-{
- int s, ss;
-
- if (sseu->max_slices == 0) {
- drm_printf(p, "Unavailable\n");
- return;
- }
-
- for (s = 0; s < sseu->max_slices; s++) {
- drm_printf(p, "slice%d: %u subslice(s) (0x%08x):\n",
- s, intel_sseu_subslices_per_slice(sseu, s),
- intel_sseu_get_subslices(sseu, s));
-
- for (ss = 0; ss < sseu->max_subslices; ss++) {
- u16 enabled_eus = sseu_get_eus(sseu, s, ss);
-
- drm_printf(p, "\tsubslice%d: %u EUs (0x%hx)\n",
- ss, hweight16(enabled_eus), enabled_eus);
- }
- }
-}
-
-static u16 compute_eu_total(const struct sseu_dev_info *sseu)
-{
- u16 i, total = 0;
-
- for (i = 0; i < ARRAY_SIZE(sseu->eu_mask); i++)
- total += hweight8(sseu->eu_mask[i]);
-
- return total;
-}
-
-static void gen11_compute_sseu_info(struct sseu_dev_info *sseu,
- u8 s_en, u32 ss_en, u16 eu_en)
-{
- int s, ss;
-
- /* ss_en represents entire subslice mask across all slices */
- GEM_BUG_ON(sseu->max_slices * sseu->max_subslices >
- sizeof(ss_en) * BITS_PER_BYTE);
-
- for (s = 0; s < sseu->max_slices; s++) {
- if ((s_en & BIT(s)) == 0)
- continue;
-
- sseu->slice_mask |= BIT(s);
-
- intel_sseu_set_subslices(sseu, s, ss_en);
-
- for (ss = 0; ss < sseu->max_subslices; ss++)
- if (intel_sseu_has_subslice(sseu, s, ss))
- sseu_set_eus(sseu, s, ss, eu_en);
- }
- sseu->eu_per_subslice = hweight16(eu_en);
- sseu->eu_total = compute_eu_total(sseu);
-}
-
-static void gen12_sseu_info_init(struct drm_i915_private *dev_priv)
-{
- struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
- struct intel_uncore *uncore = &dev_priv->uncore;
- u8 s_en;
- u32 dss_en;
- u16 eu_en = 0;
- u8 eu_en_fuse;
- int eu;
-
- /*
- * Gen12 has Dual-Subslices, which behave similarly to 2 gen11 SS.
- * Instead of splitting these, provide userspace with an array
- * of DSS to more closely represent the hardware resource.
- */
- intel_sseu_set_info(sseu, 1, 6, 16);
-
- 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);
-
- /* one bit per pair of EUs */
- eu_en_fuse = ~(intel_uncore_read(uncore, GEN11_EU_DISABLE) &
- GEN11_EU_DIS_MASK);
- for (eu = 0; eu < sseu->max_eus_per_subslice / 2; eu++)
- 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);
-
- /* TGL only supports slice-level power gating */
- sseu->has_slice_pg = 1;
-}
-
-static void gen11_sseu_info_init(struct drm_i915_private *dev_priv)
-{
- struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
- struct intel_uncore *uncore = &dev_priv->uncore;
- u8 s_en;
- u32 ss_en;
- u8 eu_en;
-
- if (IS_ELKHARTLAKE(dev_priv))
- intel_sseu_set_info(sseu, 1, 4, 8);
- else
- intel_sseu_set_info(sseu, 1, 8, 8);
-
- s_en = intel_uncore_read(uncore, GEN11_GT_SLICE_ENABLE) &
- GEN11_GT_S_ENA_MASK;
- ss_en = ~intel_uncore_read(uncore, GEN11_GT_SUBSLICE_DISABLE);
-
- eu_en = ~(intel_uncore_read(uncore, GEN11_EU_DISABLE) &
- GEN11_EU_DIS_MASK);
-
- gen11_compute_sseu_info(sseu, s_en, ss_en, eu_en);
-
- /* ICL has no power gating restrictions. */
- sseu->has_slice_pg = 1;
- sseu->has_subslice_pg = 1;
- sseu->has_eu_pg = 1;
-}
-
-static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
-{
- struct intel_uncore *uncore = &dev_priv->uncore;
- struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
- const u32 fuse2 = intel_uncore_read(uncore, GEN8_FUSE2);
- int s, ss;
- const int eu_mask = 0xff;
- u32 subslice_mask, eu_en;
-
- 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 drm_i915_private *dev_priv)
-{
- struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
- u32 fuse;
- u8 subslice_mask = 0;
-
- fuse = intel_uncore_read(&dev_priv->uncore, CHV_FUSE_GT);
-
- sseu->slice_mask = BIT(0);
- intel_sseu_set_info(sseu, 1, 2, 8);
-
- if (!(fuse & CHV_FGT_DISABLE_SS0)) {
- u8 disabled_mask =
- ((fuse & CHV_FGT_EU_DIS_SS0_R0_MASK) >>
- CHV_FGT_EU_DIS_SS0_R0_SHIFT) |
- (((fuse & CHV_FGT_EU_DIS_SS0_R1_MASK) >>
- CHV_FGT_EU_DIS_SS0_R1_SHIFT) << 4);
-
- subslice_mask |= BIT(0);
- sseu_set_eus(sseu, 0, 0, ~disabled_mask);
- }
-
- if (!(fuse & CHV_FGT_DISABLE_SS1)) {
- u8 disabled_mask =
- ((fuse & CHV_FGT_EU_DIS_SS1_R0_MASK) >>
- CHV_FGT_EU_DIS_SS1_R0_SHIFT) |
- (((fuse & CHV_FGT_EU_DIS_SS1_R1_MASK) >>
- CHV_FGT_EU_DIS_SS1_R1_SHIFT) << 4);
-
- subslice_mask |= BIT(1);
- sseu_set_eus(sseu, 0, 1, ~disabled_mask);
- }
-
- intel_sseu_set_subslices(sseu, 0, subslice_mask);
-
- sseu->eu_total = compute_eu_total(sseu);
-
- /*
- * CHV expected to always have a uniform distribution of EU
- * across subslices.
- */
- sseu->eu_per_subslice = intel_sseu_subslice_total(sseu) ?
- sseu->eu_total /
- intel_sseu_subslice_total(sseu) :
- 0;
- /*
- * CHV supports subslice power gating on devices with more than
- * one subslice, and supports EU power gating on devices with
- * more than one EU pair per subslice.
- */
- sseu->has_slice_pg = 0;
- sseu->has_subslice_pg = intel_sseu_subslice_total(sseu) > 1;
- sseu->has_eu_pg = (sseu->eu_per_subslice > 2);
-}
-
-static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
-{
- struct intel_device_info *info = mkwrite_device_info(dev_priv);
- struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
- struct intel_uncore *uncore = &dev_priv->uncore;
- int s, ss;
- u32 fuse2, eu_disable, subslice_mask;
- const u8 eu_mask = 0xff;
-
- fuse2 = intel_uncore_read(uncore, GEN8_FUSE2);
- sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
-
- /* BXT has a single slice and at most 3 subslices. */
- intel_sseu_set_info(sseu, IS_GEN9_LP(dev_priv) ? 1 : 3,
- IS_GEN9_LP(dev_priv) ? 3 : 4, 8);
-
- /*
- * The subslice disable field is global, i.e. it applies
- * to each of the enabled slices.
- */
- subslice_mask = (1 << sseu->max_subslices) - 1;
- subslice_mask &= ~((fuse2 & GEN9_F2_SS_DIS_MASK) >>
- GEN9_F2_SS_DIS_SHIFT);
-
- /*
- * Iterate through enabled slices and subslices to
- * count the total enabled EU.
- */
- for (s = 0; s < sseu->max_slices; s++) {
- if (!(sseu->slice_mask & BIT(s)))
- /* skip disabled slice */
- continue;
-
- intel_sseu_set_subslices(sseu, s, subslice_mask);
-
- eu_disable = intel_uncore_read(uncore, GEN9_EU_DISABLE(s));
- for (ss = 0; ss < sseu->max_subslices; ss++) {
- int eu_per_ss;
- u8 eu_disabled_mask;
-
- if (!intel_sseu_has_subslice(sseu, s, ss))
- /* skip disabled subslice */
- continue;
-
- eu_disabled_mask = (eu_disable >> (ss * 8)) & eu_mask;
-
- sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
-
- eu_per_ss = sseu->max_eus_per_subslice -
- hweight8(eu_disabled_mask);
-
- /*
- * Record which subslice(s) has(have) 7 EUs. we
- * can tune the hash used to spread work among
- * subslices if they are unbalanced.
- */
- if (eu_per_ss == 7)
- sseu->subslice_7eu[s] |= BIT(ss);
- }
- }
-
- sseu->eu_total = compute_eu_total(sseu);
-
- /*
- * SKL 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. BXT is expected to be perfectly uniform in EU
- * distribution.
- */
- sseu->eu_per_subslice = intel_sseu_subslice_total(sseu) ?
- DIV_ROUND_UP(sseu->eu_total,
- intel_sseu_subslice_total(sseu)) :
- 0;
- /*
- * SKL+ supports slice power gating on devices with more than
- * one slice, and supports EU power gating on devices with
- * more than one EU pair per subslice. BXT+ supports subslice
- * power gating on devices with more than one subslice, and
- * supports EU power gating on devices with more than one EU
- * pair per subslice.
- */
- sseu->has_slice_pg =
- !IS_GEN9_LP(dev_priv) && hweight8(sseu->slice_mask) > 1;
- sseu->has_subslice_pg =
- IS_GEN9_LP(dev_priv) && intel_sseu_subslice_total(sseu) > 1;
- sseu->has_eu_pg = sseu->eu_per_subslice > 2;
-
- if (IS_GEN9_LP(dev_priv)) {
-#define IS_SS_DISABLED(ss) (!(sseu->subslice_mask[0] & BIT(ss)))
- info->has_pooled_eu = hweight8(sseu->subslice_mask[0]) == 3;
-
- sseu->min_eu_in_pool = 0;
- if (info->has_pooled_eu) {
- if (IS_SS_DISABLED(2) || IS_SS_DISABLED(0))
- sseu->min_eu_in_pool = 3;
- else if (IS_SS_DISABLED(1))
- sseu->min_eu_in_pool = 6;
- else
- sseu->min_eu_in_pool = 9;
- }
-#undef IS_SS_DISABLED
- }
-}
-
-static void bdw_sseu_info_init(struct drm_i915_private *dev_priv)
-{
- struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
- struct intel_uncore *uncore = &dev_priv->uncore;
- int s, ss;
- u32 fuse2, subslice_mask, eu_disable[3]; /* s_max */
- u32 eu_disable0, eu_disable1, eu_disable2;
-
- fuse2 = intel_uncore_read(uncore, GEN8_FUSE2);
- sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
- intel_sseu_set_info(sseu, 3, 3, 8);
-
- /*
- * The subslice disable field is global, i.e. it applies
- * to each of the enabled slices.
- */
- subslice_mask = GENMASK(sseu->max_subslices - 1, 0);
- subslice_mask &= ~((fuse2 & GEN8_F2_SS_DIS_MASK) >>
- GEN8_F2_SS_DIS_SHIFT);
- eu_disable0 = intel_uncore_read(uncore, GEN8_EU_DISABLE0);
- eu_disable1 = intel_uncore_read(uncore, GEN8_EU_DISABLE1);
- eu_disable2 = intel_uncore_read(uncore, GEN8_EU_DISABLE2);
- eu_disable[0] = eu_disable0 & GEN8_EU_DIS0_S0_MASK;
- eu_disable[1] = (eu_disable0 >> GEN8_EU_DIS0_S1_SHIFT) |
- ((eu_disable1 & GEN8_EU_DIS1_S1_MASK) <<
- (32 - GEN8_EU_DIS0_S1_SHIFT));
- eu_disable[2] = (eu_disable1 >> GEN8_EU_DIS1_S2_SHIFT) |
- ((eu_disable2 & GEN8_EU_DIS2_S2_MASK) <<
- (32 - GEN8_EU_DIS1_S2_SHIFT));
-
- /*
- * Iterate through enabled slices and subslices to
- * count the total enabled EU.
- */
- for (s = 0; s < sseu->max_slices; s++) {
- if (!(sseu->slice_mask & BIT(s)))
- /* skip disabled slice */
- continue;
-
- intel_sseu_set_subslices(sseu, s, subslice_mask);
-
- for (ss = 0; ss < sseu->max_subslices; ss++) {
- u8 eu_disabled_mask;
- u32 n_disabled;
-
- if (!intel_sseu_has_subslice(sseu, s, ss))
- /* skip disabled subslice */
- continue;
-
- eu_disabled_mask =
- eu_disable[s] >> (ss * sseu->max_eus_per_subslice);
-
- sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
-
- n_disabled = hweight8(eu_disabled_mask);
-
- /*
- * Record which subslices have 7 EUs.
- */
- if (sseu->max_eus_per_subslice - n_disabled == 7)
- sseu->subslice_7eu[s] |= 1 << ss;
- }
- }
-
- sseu->eu_total = compute_eu_total(sseu);
-
- /*
- * BDW 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;
-
- /*
- * BDW supports slice power gating on devices with more than
- * one slice.
- */
- sseu->has_slice_pg = hweight8(sseu->slice_mask) > 1;
- sseu->has_subslice_pg = 0;
- sseu->has_eu_pg = 0;
-}
-
-static void hsw_sseu_info_init(struct drm_i915_private *dev_priv)
-{
- struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
- u32 fuse1;
- u8 subslice_mask = 0;
- int s, ss;
-
- /*
- * There isn't a register to tell us how many slices/subslices. We
- * work off the PCI-ids here.
- */
- switch (INTEL_INFO(dev_priv)->gt) {
- default:
- MISSING_CASE(INTEL_INFO(dev_priv)->gt);
- /* fall through */
- case 1:
- sseu->slice_mask = BIT(0);
- subslice_mask = BIT(0);
- break;
- case 2:
- sseu->slice_mask = BIT(0);
- subslice_mask = BIT(0) | BIT(1);
- break;
- case 3:
- sseu->slice_mask = BIT(0) | BIT(1);
- subslice_mask = BIT(0) | BIT(1);
- break;
- }
-
- fuse1 = intel_uncore_read(&dev_priv->uncore, HSW_PAVP_FUSE1);
- switch ((fuse1 & HSW_F1_EU_DIS_MASK) >> HSW_F1_EU_DIS_SHIFT) {
- default:
- MISSING_CASE((fuse1 & HSW_F1_EU_DIS_MASK) >>
- HSW_F1_EU_DIS_SHIFT);
- /* fall through */
- case HSW_F1_EU_DIS_10EUS:
- sseu->eu_per_subslice = 10;
- break;
- case HSW_F1_EU_DIS_8EUS:
- sseu->eu_per_subslice = 8;
- break;
- case HSW_F1_EU_DIS_6EUS:
- sseu->eu_per_subslice = 6;
- break;
- }
-
- intel_sseu_set_info(sseu, hweight8(sseu->slice_mask),
- hweight8(subslice_mask),
- sseu->eu_per_subslice);
-
- for (s = 0; s < sseu->max_slices; s++) {
- intel_sseu_set_subslices(sseu, s, subslice_mask);
-
- for (ss = 0; ss < sseu->max_subslices; ss++) {
- sseu_set_eus(sseu, s, ss,
- (1UL << sseu->eu_per_subslice) - 1);
- }
- }
-
- sseu->eu_total = compute_eu_total(sseu);
-
- /* No powergating for you. */
- sseu->has_slice_pg = 0;
- sseu->has_subslice_pg = 0;
- sseu->has_eu_pg = 0;
-}
-
static u32 read_reference_ts_freq(struct drm_i915_private *dev_priv)
{
u32 ts_override = intel_uncore_read(&dev_priv->uncore,
@@ -1042,22 +478,6 @@ void intel_device_info_runtime_init(struct drm_i915_private *dev_priv)
info->display.has_dsc = 0;
}
- /* Initialize slice/subslice/EU info */
- if (IS_HASWELL(dev_priv))
- hsw_sseu_info_init(dev_priv);
- else if (IS_CHERRYVIEW(dev_priv))
- cherryview_sseu_info_init(dev_priv);
- else if (IS_BROADWELL(dev_priv))
- bdw_sseu_info_init(dev_priv);
- else if (IS_GEN(dev_priv, 9))
- gen9_sseu_info_init(dev_priv);
- else if (IS_GEN(dev_priv, 10))
- gen10_sseu_info_init(dev_priv);
- else if (IS_GEN(dev_priv, 11))
- gen11_sseu_info_init(dev_priv);
- else if (INTEL_GEN(dev_priv) >= 12)
- gen12_sseu_info_init(dev_priv);
-
if (IS_GEN(dev_priv, 6) && intel_vtd_active()) {
drm_info(&dev_priv->drm,
"Disabling ppGTT for VT-d support\n");
diff --git a/drivers/gpu/drm/i915/intel_device_info.h b/drivers/gpu/drm/i915/intel_device_info.h
index b010b6728432..40057abbb662 100644
--- a/drivers/gpu/drm/i915/intel_device_info.h
+++ b/drivers/gpu/drm/i915/intel_device_info.h
@@ -242,8 +242,6 @@ void intel_device_info_print_static(const struct intel_device_info *info,
struct drm_printer *p);
void intel_device_info_print_runtime(const struct intel_runtime_info *info,
struct drm_printer *p);
-void intel_device_info_print_topology(const struct sseu_dev_info *sseu,
- struct drm_printer *p);
void intel_driver_caps_print(const struct intel_driver_caps *caps,
struct drm_printer *p);
--
2.24.1
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