1 // SPDX-License-Identifier: MIT
3 * Copyright © 2019 Intel Corporation
7 #include "intel_lrc_reg.h"
8 #include "intel_sseu.h"
10 void intel_sseu_set_info(struct sseu_dev_info *sseu, u8 max_slices,
11 u8 max_subslices, u8 max_eus_per_subslice)
13 sseu->max_slices = max_slices;
14 sseu->max_subslices = max_subslices;
15 sseu->max_eus_per_subslice = max_eus_per_subslice;
17 sseu->ss_stride = GEN_SSEU_STRIDE(sseu->max_subslices);
18 GEM_BUG_ON(sseu->ss_stride > GEN_MAX_SUBSLICE_STRIDE);
19 sseu->eu_stride = GEN_SSEU_STRIDE(sseu->max_eus_per_subslice);
20 GEM_BUG_ON(sseu->eu_stride > GEN_MAX_EU_STRIDE);
24 intel_sseu_subslice_total(const struct sseu_dev_info *sseu)
26 unsigned int i, total = 0;
28 for (i = 0; i < ARRAY_SIZE(sseu->subslice_mask); i++)
29 total += hweight8(sseu->subslice_mask[i]);
34 u32 intel_sseu_get_subslices(const struct sseu_dev_info *sseu, u8 slice)
36 int i, offset = slice * sseu->ss_stride;
39 GEM_BUG_ON(slice >= sseu->max_slices);
41 for (i = 0; i < sseu->ss_stride; i++)
42 mask |= (u32)sseu->subslice_mask[offset + i] <<
48 void intel_sseu_set_subslices(struct sseu_dev_info *sseu, int slice,
49 u8 *subslice_mask, u32 ss_mask)
51 int offset = slice * sseu->ss_stride;
53 memcpy(&subslice_mask[offset], &ss_mask, sseu->ss_stride);
57 intel_sseu_subslices_per_slice(const struct sseu_dev_info *sseu, u8 slice)
59 return hweight32(intel_sseu_get_subslices(sseu, slice));
62 static int sseu_eu_idx(const struct sseu_dev_info *sseu, int slice,
65 int slice_stride = sseu->max_subslices * sseu->eu_stride;
67 return slice * slice_stride + subslice * sseu->eu_stride;
70 static u16 sseu_get_eus(const struct sseu_dev_info *sseu, int slice,
73 int i, offset = sseu_eu_idx(sseu, slice, subslice);
76 for (i = 0; i < sseu->eu_stride; i++)
78 ((u16)sseu->eu_mask[offset + i]) << (i * BITS_PER_BYTE);
83 static void sseu_set_eus(struct sseu_dev_info *sseu, int slice, int subslice,
86 int i, offset = sseu_eu_idx(sseu, slice, subslice);
88 for (i = 0; i < sseu->eu_stride; i++)
89 sseu->eu_mask[offset + i] =
90 (eu_mask >> (BITS_PER_BYTE * i)) & 0xff;
93 static u16 compute_eu_total(const struct sseu_dev_info *sseu)
97 for (i = 0; i < ARRAY_SIZE(sseu->eu_mask); i++)
98 total += hweight8(sseu->eu_mask[i]);
103 static u32 get_ss_stride_mask(struct sseu_dev_info *sseu, u8 s, u32 ss_en)
107 ss_mask = ss_en >> (s * sseu->max_subslices);
108 ss_mask &= GENMASK(sseu->max_subslices - 1, 0);
113 static void gen11_compute_sseu_info(struct sseu_dev_info *sseu, u8 s_en,
114 u32 g_ss_en, u32 c_ss_en, u16 eu_en)
118 /* g_ss_en/c_ss_en represent entire subslice mask across all slices */
119 GEM_BUG_ON(sseu->max_slices * sseu->max_subslices >
120 sizeof(g_ss_en) * BITS_PER_BYTE);
122 for (s = 0; s < sseu->max_slices; s++) {
123 if ((s_en & BIT(s)) == 0)
126 sseu->slice_mask |= BIT(s);
129 * XeHP introduces the concept of compute vs geometry DSS. To
130 * reduce variation between GENs around subslice usage, store a
131 * mask for both the geometry and compute enabled masks since
132 * userspace will need to be able to query these masks
133 * independently. Also compute a total enabled subslice count
134 * for the purposes of selecting subslices to use in a
135 * particular GEM context.
137 intel_sseu_set_subslices(sseu, s, sseu->compute_subslice_mask,
138 get_ss_stride_mask(sseu, s, c_ss_en));
139 intel_sseu_set_subslices(sseu, s, sseu->geometry_subslice_mask,
140 get_ss_stride_mask(sseu, s, g_ss_en));
141 intel_sseu_set_subslices(sseu, s, sseu->subslice_mask,
142 get_ss_stride_mask(sseu, s,
145 for (ss = 0; ss < sseu->max_subslices; ss++)
146 if (intel_sseu_has_subslice(sseu, s, ss))
147 sseu_set_eus(sseu, s, ss, eu_en);
149 sseu->eu_per_subslice = hweight16(eu_en);
150 sseu->eu_total = compute_eu_total(sseu);
153 static void gen12_sseu_info_init(struct intel_gt *gt)
155 struct sseu_dev_info *sseu = >->info.sseu;
156 struct intel_uncore *uncore = gt->uncore;
157 u32 g_dss_en, c_dss_en = 0;
164 * Gen12 has Dual-Subslices, which behave similarly to 2 gen11 SS.
165 * Instead of splitting these, provide userspace with an array
166 * of DSS to more closely represent the hardware resource.
168 * In addition, the concept of slice has been removed in Xe_HP.
169 * To be compatible with prior generations, assume a single slice
170 * across the entire device. Then calculate out the DSS for each
171 * workload type within that software slice.
173 if (IS_DG2(gt->i915) || IS_XEHPSDV(gt->i915))
174 intel_sseu_set_info(sseu, 1, 32, 16);
176 intel_sseu_set_info(sseu, 1, 6, 16);
179 * As mentioned above, Xe_HP does not have the concept of a slice.
180 * Enable one for software backwards compatibility.
182 if (GRAPHICS_VER_FULL(gt->i915) >= IP_VER(12, 50))
185 s_en = intel_uncore_read(uncore, GEN11_GT_SLICE_ENABLE) &
188 g_dss_en = intel_uncore_read(uncore, GEN12_GT_GEOMETRY_DSS_ENABLE);
189 if (GRAPHICS_VER_FULL(gt->i915) >= IP_VER(12, 50))
190 c_dss_en = intel_uncore_read(uncore, GEN12_GT_COMPUTE_DSS_ENABLE);
192 /* one bit per pair of EUs */
193 if (GRAPHICS_VER_FULL(gt->i915) >= IP_VER(12, 50))
194 eu_en_fuse = intel_uncore_read(uncore, XEHP_EU_ENABLE) & XEHP_EU_ENA_MASK;
196 eu_en_fuse = ~(intel_uncore_read(uncore, GEN11_EU_DISABLE) &
199 for (eu = 0; eu < sseu->max_eus_per_subslice / 2; eu++)
200 if (eu_en_fuse & BIT(eu))
201 eu_en |= BIT(eu * 2) | BIT(eu * 2 + 1);
203 gen11_compute_sseu_info(sseu, s_en, g_dss_en, c_dss_en, eu_en);
205 /* TGL only supports slice-level power gating */
206 sseu->has_slice_pg = 1;
209 static void gen11_sseu_info_init(struct intel_gt *gt)
211 struct sseu_dev_info *sseu = >->info.sseu;
212 struct intel_uncore *uncore = gt->uncore;
217 if (IS_JSL_EHL(gt->i915))
218 intel_sseu_set_info(sseu, 1, 4, 8);
220 intel_sseu_set_info(sseu, 1, 8, 8);
222 s_en = intel_uncore_read(uncore, GEN11_GT_SLICE_ENABLE) &
224 ss_en = ~intel_uncore_read(uncore, GEN11_GT_SUBSLICE_DISABLE);
226 eu_en = ~(intel_uncore_read(uncore, GEN11_EU_DISABLE) &
229 gen11_compute_sseu_info(sseu, s_en, ss_en, 0, eu_en);
231 /* ICL has no power gating restrictions. */
232 sseu->has_slice_pg = 1;
233 sseu->has_subslice_pg = 1;
237 static void cherryview_sseu_info_init(struct intel_gt *gt)
239 struct sseu_dev_info *sseu = >->info.sseu;
241 u8 subslice_mask = 0;
243 fuse = intel_uncore_read(gt->uncore, CHV_FUSE_GT);
245 sseu->slice_mask = BIT(0);
246 intel_sseu_set_info(sseu, 1, 2, 8);
248 if (!(fuse & CHV_FGT_DISABLE_SS0)) {
250 ((fuse & CHV_FGT_EU_DIS_SS0_R0_MASK) >>
251 CHV_FGT_EU_DIS_SS0_R0_SHIFT) |
252 (((fuse & CHV_FGT_EU_DIS_SS0_R1_MASK) >>
253 CHV_FGT_EU_DIS_SS0_R1_SHIFT) << 4);
255 subslice_mask |= BIT(0);
256 sseu_set_eus(sseu, 0, 0, ~disabled_mask);
259 if (!(fuse & CHV_FGT_DISABLE_SS1)) {
261 ((fuse & CHV_FGT_EU_DIS_SS1_R0_MASK) >>
262 CHV_FGT_EU_DIS_SS1_R0_SHIFT) |
263 (((fuse & CHV_FGT_EU_DIS_SS1_R1_MASK) >>
264 CHV_FGT_EU_DIS_SS1_R1_SHIFT) << 4);
266 subslice_mask |= BIT(1);
267 sseu_set_eus(sseu, 0, 1, ~disabled_mask);
270 intel_sseu_set_subslices(sseu, 0, sseu->subslice_mask, subslice_mask);
272 sseu->eu_total = compute_eu_total(sseu);
275 * CHV expected to always have a uniform distribution of EU
278 sseu->eu_per_subslice = intel_sseu_subslice_total(sseu) ?
280 intel_sseu_subslice_total(sseu) :
283 * CHV supports subslice power gating on devices with more than
284 * one subslice, and supports EU power gating on devices with
285 * more than one EU pair per subslice.
287 sseu->has_slice_pg = 0;
288 sseu->has_subslice_pg = intel_sseu_subslice_total(sseu) > 1;
289 sseu->has_eu_pg = (sseu->eu_per_subslice > 2);
292 static void gen9_sseu_info_init(struct intel_gt *gt)
294 struct drm_i915_private *i915 = gt->i915;
295 struct intel_device_info *info = mkwrite_device_info(i915);
296 struct sseu_dev_info *sseu = >->info.sseu;
297 struct intel_uncore *uncore = gt->uncore;
298 u32 fuse2, eu_disable, subslice_mask;
299 const u8 eu_mask = 0xff;
302 fuse2 = intel_uncore_read(uncore, GEN8_FUSE2);
303 sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
305 /* BXT has a single slice and at most 3 subslices. */
306 intel_sseu_set_info(sseu, IS_GEN9_LP(i915) ? 1 : 3,
307 IS_GEN9_LP(i915) ? 3 : 4, 8);
310 * The subslice disable field is global, i.e. it applies
311 * to each of the enabled slices.
313 subslice_mask = (1 << sseu->max_subslices) - 1;
314 subslice_mask &= ~((fuse2 & GEN9_F2_SS_DIS_MASK) >>
315 GEN9_F2_SS_DIS_SHIFT);
318 * Iterate through enabled slices and subslices to
319 * count the total enabled EU.
321 for (s = 0; s < sseu->max_slices; s++) {
322 if (!(sseu->slice_mask & BIT(s)))
323 /* skip disabled slice */
326 intel_sseu_set_subslices(sseu, s, sseu->subslice_mask,
329 eu_disable = intel_uncore_read(uncore, GEN9_EU_DISABLE(s));
330 for (ss = 0; ss < sseu->max_subslices; ss++) {
334 if (!intel_sseu_has_subslice(sseu, s, ss))
335 /* skip disabled subslice */
338 eu_disabled_mask = (eu_disable >> (ss * 8)) & eu_mask;
340 sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
342 eu_per_ss = sseu->max_eus_per_subslice -
343 hweight8(eu_disabled_mask);
346 * Record which subslice(s) has(have) 7 EUs. we
347 * can tune the hash used to spread work among
348 * subslices if they are unbalanced.
351 sseu->subslice_7eu[s] |= BIT(ss);
355 sseu->eu_total = compute_eu_total(sseu);
358 * SKL is expected to always have a uniform distribution
359 * of EU across subslices with the exception that any one
360 * EU in any one subslice may be fused off for die
361 * recovery. BXT is expected to be perfectly uniform in EU
364 sseu->eu_per_subslice =
365 intel_sseu_subslice_total(sseu) ?
366 DIV_ROUND_UP(sseu->eu_total, intel_sseu_subslice_total(sseu)) :
370 * SKL+ supports slice power gating on devices with more than
371 * one slice, and supports EU power gating on devices with
372 * more than one EU pair per subslice. BXT+ supports subslice
373 * power gating on devices with more than one subslice, and
374 * supports EU power gating on devices with more than one EU
378 !IS_GEN9_LP(i915) && hweight8(sseu->slice_mask) > 1;
379 sseu->has_subslice_pg =
380 IS_GEN9_LP(i915) && intel_sseu_subslice_total(sseu) > 1;
381 sseu->has_eu_pg = sseu->eu_per_subslice > 2;
383 if (IS_GEN9_LP(i915)) {
384 #define IS_SS_DISABLED(ss) (!(sseu->subslice_mask[0] & BIT(ss)))
385 info->has_pooled_eu = hweight8(sseu->subslice_mask[0]) == 3;
387 sseu->min_eu_in_pool = 0;
388 if (info->has_pooled_eu) {
389 if (IS_SS_DISABLED(2) || IS_SS_DISABLED(0))
390 sseu->min_eu_in_pool = 3;
391 else if (IS_SS_DISABLED(1))
392 sseu->min_eu_in_pool = 6;
394 sseu->min_eu_in_pool = 9;
396 #undef IS_SS_DISABLED
400 static void bdw_sseu_info_init(struct intel_gt *gt)
402 struct sseu_dev_info *sseu = >->info.sseu;
403 struct intel_uncore *uncore = gt->uncore;
405 u32 fuse2, subslice_mask, eu_disable[3]; /* s_max */
406 u32 eu_disable0, eu_disable1, eu_disable2;
408 fuse2 = intel_uncore_read(uncore, GEN8_FUSE2);
409 sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
410 intel_sseu_set_info(sseu, 3, 3, 8);
413 * The subslice disable field is global, i.e. it applies
414 * to each of the enabled slices.
416 subslice_mask = GENMASK(sseu->max_subslices - 1, 0);
417 subslice_mask &= ~((fuse2 & GEN8_F2_SS_DIS_MASK) >>
418 GEN8_F2_SS_DIS_SHIFT);
419 eu_disable0 = intel_uncore_read(uncore, GEN8_EU_DISABLE0);
420 eu_disable1 = intel_uncore_read(uncore, GEN8_EU_DISABLE1);
421 eu_disable2 = intel_uncore_read(uncore, GEN8_EU_DISABLE2);
422 eu_disable[0] = eu_disable0 & GEN8_EU_DIS0_S0_MASK;
423 eu_disable[1] = (eu_disable0 >> GEN8_EU_DIS0_S1_SHIFT) |
424 ((eu_disable1 & GEN8_EU_DIS1_S1_MASK) <<
425 (32 - GEN8_EU_DIS0_S1_SHIFT));
426 eu_disable[2] = (eu_disable1 >> GEN8_EU_DIS1_S2_SHIFT) |
427 ((eu_disable2 & GEN8_EU_DIS2_S2_MASK) <<
428 (32 - GEN8_EU_DIS1_S2_SHIFT));
431 * Iterate through enabled slices and subslices to
432 * count the total enabled EU.
434 for (s = 0; s < sseu->max_slices; s++) {
435 if (!(sseu->slice_mask & BIT(s)))
436 /* skip disabled slice */
439 intel_sseu_set_subslices(sseu, s, sseu->subslice_mask,
442 for (ss = 0; ss < sseu->max_subslices; ss++) {
446 if (!intel_sseu_has_subslice(sseu, s, ss))
447 /* skip disabled subslice */
451 eu_disable[s] >> (ss * sseu->max_eus_per_subslice);
453 sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
455 n_disabled = hweight8(eu_disabled_mask);
458 * Record which subslices have 7 EUs.
460 if (sseu->max_eus_per_subslice - n_disabled == 7)
461 sseu->subslice_7eu[s] |= 1 << ss;
465 sseu->eu_total = compute_eu_total(sseu);
468 * BDW is expected to always have a uniform distribution of EU across
469 * subslices with the exception that any one EU in any one subslice may
470 * be fused off for die recovery.
472 sseu->eu_per_subslice =
473 intel_sseu_subslice_total(sseu) ?
474 DIV_ROUND_UP(sseu->eu_total, intel_sseu_subslice_total(sseu)) :
478 * BDW supports slice power gating on devices with more than
481 sseu->has_slice_pg = hweight8(sseu->slice_mask) > 1;
482 sseu->has_subslice_pg = 0;
486 static void hsw_sseu_info_init(struct intel_gt *gt)
488 struct drm_i915_private *i915 = gt->i915;
489 struct sseu_dev_info *sseu = >->info.sseu;
491 u8 subslice_mask = 0;
495 * There isn't a register to tell us how many slices/subslices. We
496 * work off the PCI-ids here.
498 switch (INTEL_INFO(i915)->gt) {
500 MISSING_CASE(INTEL_INFO(i915)->gt);
503 sseu->slice_mask = BIT(0);
504 subslice_mask = BIT(0);
507 sseu->slice_mask = BIT(0);
508 subslice_mask = BIT(0) | BIT(1);
511 sseu->slice_mask = BIT(0) | BIT(1);
512 subslice_mask = BIT(0) | BIT(1);
516 fuse1 = intel_uncore_read(gt->uncore, HSW_PAVP_FUSE1);
517 switch (REG_FIELD_GET(HSW_F1_EU_DIS_MASK, fuse1)) {
519 MISSING_CASE(REG_FIELD_GET(HSW_F1_EU_DIS_MASK, fuse1));
521 case HSW_F1_EU_DIS_10EUS:
522 sseu->eu_per_subslice = 10;
524 case HSW_F1_EU_DIS_8EUS:
525 sseu->eu_per_subslice = 8;
527 case HSW_F1_EU_DIS_6EUS:
528 sseu->eu_per_subslice = 6;
532 intel_sseu_set_info(sseu, hweight8(sseu->slice_mask),
533 hweight8(subslice_mask),
534 sseu->eu_per_subslice);
536 for (s = 0; s < sseu->max_slices; s++) {
537 intel_sseu_set_subslices(sseu, s, sseu->subslice_mask,
540 for (ss = 0; ss < sseu->max_subslices; ss++) {
541 sseu_set_eus(sseu, s, ss,
542 (1UL << sseu->eu_per_subslice) - 1);
546 sseu->eu_total = compute_eu_total(sseu);
548 /* No powergating for you. */
549 sseu->has_slice_pg = 0;
550 sseu->has_subslice_pg = 0;
554 void intel_sseu_info_init(struct intel_gt *gt)
556 struct drm_i915_private *i915 = gt->i915;
558 if (IS_HASWELL(i915))
559 hsw_sseu_info_init(gt);
560 else if (IS_CHERRYVIEW(i915))
561 cherryview_sseu_info_init(gt);
562 else if (IS_BROADWELL(i915))
563 bdw_sseu_info_init(gt);
564 else if (GRAPHICS_VER(i915) == 9)
565 gen9_sseu_info_init(gt);
566 else if (GRAPHICS_VER(i915) == 11)
567 gen11_sseu_info_init(gt);
568 else if (GRAPHICS_VER(i915) >= 12)
569 gen12_sseu_info_init(gt);
572 u32 intel_sseu_make_rpcs(struct intel_gt *gt,
573 const struct intel_sseu *req_sseu)
575 struct drm_i915_private *i915 = gt->i915;
576 const struct sseu_dev_info *sseu = >->info.sseu;
577 bool subslice_pg = sseu->has_subslice_pg;
578 u8 slices, subslices;
582 * No explicit RPCS request is needed to ensure full
583 * slice/subslice/EU enablement prior to Gen9.
585 if (GRAPHICS_VER(i915) < 9)
589 * If i915/perf is active, we want a stable powergating configuration
590 * on the system. Use the configuration pinned by i915/perf.
592 if (i915->perf.exclusive_stream)
593 req_sseu = &i915->perf.sseu;
595 slices = hweight8(req_sseu->slice_mask);
596 subslices = hweight8(req_sseu->subslice_mask);
599 * Since the SScount bitfield in GEN8_R_PWR_CLK_STATE is only three bits
600 * wide and Icelake has up to eight subslices, specfial programming is
601 * needed in order to correctly enable all subslices.
603 * According to documentation software must consider the configuration
604 * as 2x4x8 and hardware will translate this to 1x8x8.
606 * Furthemore, even though SScount is three bits, maximum documented
607 * value for it is four. From this some rules/restrictions follow:
610 * If enabled subslice count is greater than four, two whole slices must
611 * be enabled instead.
614 * When more than one slice is enabled, hardware ignores the subslice
617 * From these restrictions it follows that it is not possible to enable
618 * a count of subslices between the SScount maximum of four restriction,
619 * and the maximum available number on a particular SKU. Either all
620 * subslices are enabled, or a count between one and four on the first
623 if (GRAPHICS_VER(i915) == 11 &&
625 subslices > min_t(u8, 4, hweight8(sseu->subslice_mask[0]) / 2)) {
626 GEM_BUG_ON(subslices & 1);
633 * Starting in Gen9, render power gating can leave
634 * slice/subslice/EU in a partially enabled state. We
635 * must make an explicit request through RPCS for full
638 if (sseu->has_slice_pg) {
639 u32 mask, val = slices;
641 if (GRAPHICS_VER(i915) >= 11) {
642 mask = GEN11_RPCS_S_CNT_MASK;
643 val <<= GEN11_RPCS_S_CNT_SHIFT;
645 mask = GEN8_RPCS_S_CNT_MASK;
646 val <<= GEN8_RPCS_S_CNT_SHIFT;
649 GEM_BUG_ON(val & ~mask);
652 rpcs |= GEN8_RPCS_ENABLE | GEN8_RPCS_S_CNT_ENABLE | val;
658 val <<= GEN8_RPCS_SS_CNT_SHIFT;
660 GEM_BUG_ON(val & ~GEN8_RPCS_SS_CNT_MASK);
661 val &= GEN8_RPCS_SS_CNT_MASK;
663 rpcs |= GEN8_RPCS_ENABLE | GEN8_RPCS_SS_CNT_ENABLE | val;
666 if (sseu->has_eu_pg) {
669 val = req_sseu->min_eus_per_subslice << GEN8_RPCS_EU_MIN_SHIFT;
670 GEM_BUG_ON(val & ~GEN8_RPCS_EU_MIN_MASK);
671 val &= GEN8_RPCS_EU_MIN_MASK;
675 val = req_sseu->max_eus_per_subslice << GEN8_RPCS_EU_MAX_SHIFT;
676 GEM_BUG_ON(val & ~GEN8_RPCS_EU_MAX_MASK);
677 val &= GEN8_RPCS_EU_MAX_MASK;
681 rpcs |= GEN8_RPCS_ENABLE;
687 void intel_sseu_dump(const struct sseu_dev_info *sseu, struct drm_printer *p)
691 drm_printf(p, "slice total: %u, mask=%04x\n",
692 hweight8(sseu->slice_mask), sseu->slice_mask);
693 drm_printf(p, "subslice total: %u\n", intel_sseu_subslice_total(sseu));
694 for (s = 0; s < sseu->max_slices; s++) {
695 drm_printf(p, "slice%d: %u subslices, mask=%08x\n",
696 s, intel_sseu_subslices_per_slice(sseu, s),
697 intel_sseu_get_subslices(sseu, s));
699 drm_printf(p, "EU total: %u\n", sseu->eu_total);
700 drm_printf(p, "EU per subslice: %u\n", sseu->eu_per_subslice);
701 drm_printf(p, "has slice power gating: %s\n",
702 yesno(sseu->has_slice_pg));
703 drm_printf(p, "has subslice power gating: %s\n",
704 yesno(sseu->has_subslice_pg));
705 drm_printf(p, "has EU power gating: %s\n", yesno(sseu->has_eu_pg));
708 void intel_sseu_print_topology(const struct sseu_dev_info *sseu,
709 struct drm_printer *p)
713 if (sseu->max_slices == 0) {
714 drm_printf(p, "Unavailable\n");
718 for (s = 0; s < sseu->max_slices; s++) {
719 drm_printf(p, "slice%d: %u subslice(s) (0x%08x):\n",
720 s, intel_sseu_subslices_per_slice(sseu, s),
721 intel_sseu_get_subslices(sseu, s));
723 for (ss = 0; ss < sseu->max_subslices; ss++) {
724 u16 enabled_eus = sseu_get_eus(sseu, s, ss);
726 drm_printf(p, "\tsubslice%d: %u EUs (0x%hx)\n",
727 ss, hweight16(enabled_eus), enabled_eus);
732 u16 intel_slicemask_from_dssmask(u64 dss_mask, int dss_per_slice)
737 WARN_ON(sizeof(dss_mask) * 8 / dss_per_slice > 8 * sizeof(slice_mask));
739 for (i = 0; dss_mask; i++) {
740 if (dss_mask & GENMASK(dss_per_slice - 1, 0))
741 slice_mask |= BIT(i);
743 dss_mask >>= dss_per_slice;