2 * Copyright © 2016 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
25 #include <drm/drm_print.h>
27 #include "intel_device_info.h"
30 #define PLATFORM_NAME(x) [INTEL_##x] = #x
31 static const char * const platform_names[] = {
37 PLATFORM_NAME(I915GM),
39 PLATFORM_NAME(I945GM),
41 PLATFORM_NAME(PINEVIEW),
43 PLATFORM_NAME(I965GM),
46 PLATFORM_NAME(IRONLAKE),
47 PLATFORM_NAME(SANDYBRIDGE),
48 PLATFORM_NAME(IVYBRIDGE),
49 PLATFORM_NAME(VALLEYVIEW),
50 PLATFORM_NAME(HASWELL),
51 PLATFORM_NAME(BROADWELL),
52 PLATFORM_NAME(CHERRYVIEW),
53 PLATFORM_NAME(SKYLAKE),
54 PLATFORM_NAME(BROXTON),
55 PLATFORM_NAME(KABYLAKE),
56 PLATFORM_NAME(GEMINILAKE),
57 PLATFORM_NAME(COFFEELAKE),
58 PLATFORM_NAME(CANNONLAKE),
59 PLATFORM_NAME(ICELAKE),
60 PLATFORM_NAME(ELKHARTLAKE),
64 const char *intel_platform_name(enum intel_platform platform)
66 BUILD_BUG_ON(ARRAY_SIZE(platform_names) != INTEL_MAX_PLATFORMS);
68 if (WARN_ON_ONCE(platform >= ARRAY_SIZE(platform_names) ||
69 platform_names[platform] == NULL))
72 return platform_names[platform];
75 void intel_device_info_dump_flags(const struct intel_device_info *info,
76 struct drm_printer *p)
78 #define PRINT_FLAG(name) drm_printf(p, "%s: %s\n", #name, yesno(info->name));
79 DEV_INFO_FOR_EACH_FLAG(PRINT_FLAG);
82 #define PRINT_FLAG(name) drm_printf(p, "%s: %s\n", #name, yesno(info->display.name));
83 DEV_INFO_DISPLAY_FOR_EACH_FLAG(PRINT_FLAG);
87 static void sseu_dump(const struct sseu_dev_info *sseu, struct drm_printer *p)
91 drm_printf(p, "slice total: %u, mask=%04x\n",
92 hweight8(sseu->slice_mask), sseu->slice_mask);
93 drm_printf(p, "subslice total: %u\n", sseu_subslice_total(sseu));
94 for (s = 0; s < sseu->max_slices; s++) {
95 drm_printf(p, "slice%d: %u subslices, mask=%04x\n",
96 s, hweight8(sseu->subslice_mask[s]),
97 sseu->subslice_mask[s]);
99 drm_printf(p, "EU total: %u\n", sseu->eu_total);
100 drm_printf(p, "EU per subslice: %u\n", sseu->eu_per_subslice);
101 drm_printf(p, "has slice power gating: %s\n",
102 yesno(sseu->has_slice_pg));
103 drm_printf(p, "has subslice power gating: %s\n",
104 yesno(sseu->has_subslice_pg));
105 drm_printf(p, "has EU power gating: %s\n", yesno(sseu->has_eu_pg));
108 void intel_device_info_dump_runtime(const struct intel_runtime_info *info,
109 struct drm_printer *p)
111 sseu_dump(&info->sseu, p);
113 drm_printf(p, "CS timestamp frequency: %u kHz\n",
114 info->cs_timestamp_frequency_khz);
117 void intel_device_info_dump_topology(const struct sseu_dev_info *sseu,
118 struct drm_printer *p)
122 if (sseu->max_slices == 0) {
123 drm_printf(p, "Unavailable\n");
127 for (s = 0; s < sseu->max_slices; s++) {
128 drm_printf(p, "slice%d: %u subslice(s) (0x%hhx):\n",
129 s, hweight8(sseu->subslice_mask[s]),
130 sseu->subslice_mask[s]);
132 for (ss = 0; ss < sseu->max_subslices; ss++) {
133 u16 enabled_eus = sseu_get_eus(sseu, s, ss);
135 drm_printf(p, "\tsubslice%d: %u EUs (0x%hx)\n",
136 ss, hweight16(enabled_eus), enabled_eus);
141 static u16 compute_eu_total(const struct sseu_dev_info *sseu)
145 for (i = 0; i < ARRAY_SIZE(sseu->eu_mask); i++)
146 total += hweight8(sseu->eu_mask[i]);
151 static void gen11_sseu_info_init(struct drm_i915_private *dev_priv)
153 struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
155 u32 ss_en, ss_en_mask;
159 if (IS_ELKHARTLAKE(dev_priv)) {
160 sseu->max_slices = 1;
161 sseu->max_subslices = 4;
162 sseu->max_eus_per_subslice = 8;
164 sseu->max_slices = 1;
165 sseu->max_subslices = 8;
166 sseu->max_eus_per_subslice = 8;
169 s_en = I915_READ(GEN11_GT_SLICE_ENABLE) & GEN11_GT_S_ENA_MASK;
170 ss_en = ~I915_READ(GEN11_GT_SUBSLICE_DISABLE);
171 ss_en_mask = BIT(sseu->max_subslices) - 1;
172 eu_en = ~(I915_READ(GEN11_EU_DISABLE) & GEN11_EU_DIS_MASK);
174 for (s = 0; s < sseu->max_slices; s++) {
176 int ss_idx = sseu->max_subslices * s;
179 sseu->slice_mask |= BIT(s);
180 sseu->subslice_mask[s] = (ss_en >> ss_idx) & ss_en_mask;
181 for (ss = 0; ss < sseu->max_subslices; ss++) {
182 if (sseu->subslice_mask[s] & BIT(ss))
183 sseu_set_eus(sseu, s, ss, eu_en);
187 sseu->eu_per_subslice = hweight8(eu_en);
188 sseu->eu_total = compute_eu_total(sseu);
190 /* ICL has no power gating restrictions. */
191 sseu->has_slice_pg = 1;
192 sseu->has_subslice_pg = 1;
196 static void gen10_sseu_info_init(struct drm_i915_private *dev_priv)
198 struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
199 const u32 fuse2 = I915_READ(GEN8_FUSE2);
201 const int eu_mask = 0xff;
202 u32 subslice_mask, eu_en;
204 sseu->slice_mask = (fuse2 & GEN10_F2_S_ENA_MASK) >>
205 GEN10_F2_S_ENA_SHIFT;
206 sseu->max_slices = 6;
207 sseu->max_subslices = 4;
208 sseu->max_eus_per_subslice = 8;
210 subslice_mask = (1 << 4) - 1;
211 subslice_mask &= ~((fuse2 & GEN10_F2_SS_DIS_MASK) >>
212 GEN10_F2_SS_DIS_SHIFT);
215 * Slice0 can have up to 3 subslices, but there are only 2 in
218 sseu->subslice_mask[0] = subslice_mask;
219 for (s = 1; s < sseu->max_slices; s++)
220 sseu->subslice_mask[s] = subslice_mask & 0x3;
223 eu_en = ~I915_READ(GEN8_EU_DISABLE0);
224 for (ss = 0; ss < sseu->max_subslices; ss++)
225 sseu_set_eus(sseu, 0, ss, (eu_en >> (8 * ss)) & eu_mask);
227 sseu_set_eus(sseu, 1, 0, (eu_en >> 24) & eu_mask);
228 eu_en = ~I915_READ(GEN8_EU_DISABLE1);
229 sseu_set_eus(sseu, 1, 1, eu_en & eu_mask);
231 sseu_set_eus(sseu, 2, 0, (eu_en >> 8) & eu_mask);
232 sseu_set_eus(sseu, 2, 1, (eu_en >> 16) & eu_mask);
234 sseu_set_eus(sseu, 3, 0, (eu_en >> 24) & eu_mask);
235 eu_en = ~I915_READ(GEN8_EU_DISABLE2);
236 sseu_set_eus(sseu, 3, 1, eu_en & eu_mask);
238 sseu_set_eus(sseu, 4, 0, (eu_en >> 8) & eu_mask);
239 sseu_set_eus(sseu, 4, 1, (eu_en >> 16) & eu_mask);
241 sseu_set_eus(sseu, 5, 0, (eu_en >> 24) & eu_mask);
242 eu_en = ~I915_READ(GEN10_EU_DISABLE3);
243 sseu_set_eus(sseu, 5, 1, eu_en & eu_mask);
245 /* Do a second pass where we mark the subslices disabled if all their
248 for (s = 0; s < sseu->max_slices; s++) {
249 for (ss = 0; ss < sseu->max_subslices; ss++) {
250 if (sseu_get_eus(sseu, s, ss) == 0)
251 sseu->subslice_mask[s] &= ~BIT(ss);
255 sseu->eu_total = compute_eu_total(sseu);
258 * CNL is expected to always have a uniform distribution
259 * of EU across subslices with the exception that any one
260 * EU in any one subslice may be fused off for die
263 sseu->eu_per_subslice = sseu_subslice_total(sseu) ?
264 DIV_ROUND_UP(sseu->eu_total,
265 sseu_subslice_total(sseu)) : 0;
267 /* No restrictions on Power Gating */
268 sseu->has_slice_pg = 1;
269 sseu->has_subslice_pg = 1;
273 static void cherryview_sseu_info_init(struct drm_i915_private *dev_priv)
275 struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
278 fuse = I915_READ(CHV_FUSE_GT);
280 sseu->slice_mask = BIT(0);
281 sseu->max_slices = 1;
282 sseu->max_subslices = 2;
283 sseu->max_eus_per_subslice = 8;
285 if (!(fuse & CHV_FGT_DISABLE_SS0)) {
287 ((fuse & CHV_FGT_EU_DIS_SS0_R0_MASK) >>
288 CHV_FGT_EU_DIS_SS0_R0_SHIFT) |
289 (((fuse & CHV_FGT_EU_DIS_SS0_R1_MASK) >>
290 CHV_FGT_EU_DIS_SS0_R1_SHIFT) << 4);
292 sseu->subslice_mask[0] |= BIT(0);
293 sseu_set_eus(sseu, 0, 0, ~disabled_mask);
296 if (!(fuse & CHV_FGT_DISABLE_SS1)) {
298 ((fuse & CHV_FGT_EU_DIS_SS1_R0_MASK) >>
299 CHV_FGT_EU_DIS_SS1_R0_SHIFT) |
300 (((fuse & CHV_FGT_EU_DIS_SS1_R1_MASK) >>
301 CHV_FGT_EU_DIS_SS1_R1_SHIFT) << 4);
303 sseu->subslice_mask[0] |= BIT(1);
304 sseu_set_eus(sseu, 0, 1, ~disabled_mask);
307 sseu->eu_total = compute_eu_total(sseu);
310 * CHV expected to always have a uniform distribution of EU
313 sseu->eu_per_subslice = sseu_subslice_total(sseu) ?
314 sseu->eu_total / sseu_subslice_total(sseu) :
317 * CHV supports subslice power gating on devices with more than
318 * one subslice, and supports EU power gating on devices with
319 * more than one EU pair per subslice.
321 sseu->has_slice_pg = 0;
322 sseu->has_subslice_pg = sseu_subslice_total(sseu) > 1;
323 sseu->has_eu_pg = (sseu->eu_per_subslice > 2);
326 static void gen9_sseu_info_init(struct drm_i915_private *dev_priv)
328 struct intel_device_info *info = mkwrite_device_info(dev_priv);
329 struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
331 u32 fuse2, eu_disable, subslice_mask;
332 const u8 eu_mask = 0xff;
334 fuse2 = I915_READ(GEN8_FUSE2);
335 sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
337 /* BXT has a single slice and at most 3 subslices. */
338 sseu->max_slices = IS_GEN9_LP(dev_priv) ? 1 : 3;
339 sseu->max_subslices = IS_GEN9_LP(dev_priv) ? 3 : 4;
340 sseu->max_eus_per_subslice = 8;
343 * The subslice disable field is global, i.e. it applies
344 * to each of the enabled slices.
346 subslice_mask = (1 << sseu->max_subslices) - 1;
347 subslice_mask &= ~((fuse2 & GEN9_F2_SS_DIS_MASK) >>
348 GEN9_F2_SS_DIS_SHIFT);
351 * Iterate through enabled slices and subslices to
352 * count the total enabled EU.
354 for (s = 0; s < sseu->max_slices; s++) {
355 if (!(sseu->slice_mask & BIT(s)))
356 /* skip disabled slice */
359 sseu->subslice_mask[s] = subslice_mask;
361 eu_disable = I915_READ(GEN9_EU_DISABLE(s));
362 for (ss = 0; ss < sseu->max_subslices; ss++) {
366 if (!(sseu->subslice_mask[s] & BIT(ss)))
367 /* skip disabled subslice */
370 eu_disabled_mask = (eu_disable >> (ss * 8)) & eu_mask;
372 sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
374 eu_per_ss = sseu->max_eus_per_subslice -
375 hweight8(eu_disabled_mask);
378 * Record which subslice(s) has(have) 7 EUs. we
379 * can tune the hash used to spread work among
380 * subslices if they are unbalanced.
383 sseu->subslice_7eu[s] |= BIT(ss);
387 sseu->eu_total = compute_eu_total(sseu);
390 * SKL is expected to always have a uniform distribution
391 * of EU across subslices with the exception that any one
392 * EU in any one subslice may be fused off for die
393 * recovery. BXT is expected to be perfectly uniform in EU
396 sseu->eu_per_subslice = sseu_subslice_total(sseu) ?
397 DIV_ROUND_UP(sseu->eu_total,
398 sseu_subslice_total(sseu)) : 0;
400 * SKL+ supports slice power gating on devices with more than
401 * one slice, and supports EU power gating on devices with
402 * more than one EU pair per subslice. BXT+ supports subslice
403 * power gating on devices with more than one subslice, and
404 * supports EU power gating on devices with more than one EU
408 !IS_GEN9_LP(dev_priv) && hweight8(sseu->slice_mask) > 1;
409 sseu->has_subslice_pg =
410 IS_GEN9_LP(dev_priv) && sseu_subslice_total(sseu) > 1;
411 sseu->has_eu_pg = sseu->eu_per_subslice > 2;
413 if (IS_GEN9_LP(dev_priv)) {
414 #define IS_SS_DISABLED(ss) (!(sseu->subslice_mask[0] & BIT(ss)))
415 info->has_pooled_eu = hweight8(sseu->subslice_mask[0]) == 3;
417 sseu->min_eu_in_pool = 0;
418 if (info->has_pooled_eu) {
419 if (IS_SS_DISABLED(2) || IS_SS_DISABLED(0))
420 sseu->min_eu_in_pool = 3;
421 else if (IS_SS_DISABLED(1))
422 sseu->min_eu_in_pool = 6;
424 sseu->min_eu_in_pool = 9;
426 #undef IS_SS_DISABLED
430 static void broadwell_sseu_info_init(struct drm_i915_private *dev_priv)
432 struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
434 u32 fuse2, subslice_mask, eu_disable[3]; /* s_max */
436 fuse2 = I915_READ(GEN8_FUSE2);
437 sseu->slice_mask = (fuse2 & GEN8_F2_S_ENA_MASK) >> GEN8_F2_S_ENA_SHIFT;
438 sseu->max_slices = 3;
439 sseu->max_subslices = 3;
440 sseu->max_eus_per_subslice = 8;
443 * The subslice disable field is global, i.e. it applies
444 * to each of the enabled slices.
446 subslice_mask = GENMASK(sseu->max_subslices - 1, 0);
447 subslice_mask &= ~((fuse2 & GEN8_F2_SS_DIS_MASK) >>
448 GEN8_F2_SS_DIS_SHIFT);
450 eu_disable[0] = I915_READ(GEN8_EU_DISABLE0) & GEN8_EU_DIS0_S0_MASK;
451 eu_disable[1] = (I915_READ(GEN8_EU_DISABLE0) >> GEN8_EU_DIS0_S1_SHIFT) |
452 ((I915_READ(GEN8_EU_DISABLE1) & GEN8_EU_DIS1_S1_MASK) <<
453 (32 - GEN8_EU_DIS0_S1_SHIFT));
454 eu_disable[2] = (I915_READ(GEN8_EU_DISABLE1) >> GEN8_EU_DIS1_S2_SHIFT) |
455 ((I915_READ(GEN8_EU_DISABLE2) & GEN8_EU_DIS2_S2_MASK) <<
456 (32 - GEN8_EU_DIS1_S2_SHIFT));
459 * Iterate through enabled slices and subslices to
460 * count the total enabled EU.
462 for (s = 0; s < sseu->max_slices; s++) {
463 if (!(sseu->slice_mask & BIT(s)))
464 /* skip disabled slice */
467 sseu->subslice_mask[s] = subslice_mask;
469 for (ss = 0; ss < sseu->max_subslices; ss++) {
473 if (!(sseu->subslice_mask[s] & BIT(ss)))
474 /* skip disabled subslice */
478 eu_disable[s] >> (ss * sseu->max_eus_per_subslice);
480 sseu_set_eus(sseu, s, ss, ~eu_disabled_mask);
482 n_disabled = hweight8(eu_disabled_mask);
485 * Record which subslices have 7 EUs.
487 if (sseu->max_eus_per_subslice - n_disabled == 7)
488 sseu->subslice_7eu[s] |= 1 << ss;
492 sseu->eu_total = compute_eu_total(sseu);
495 * BDW is expected to always have a uniform distribution of EU across
496 * subslices with the exception that any one EU in any one subslice may
497 * be fused off for die recovery.
499 sseu->eu_per_subslice = sseu_subslice_total(sseu) ?
500 DIV_ROUND_UP(sseu->eu_total,
501 sseu_subslice_total(sseu)) : 0;
504 * BDW supports slice power gating on devices with more than
507 sseu->has_slice_pg = hweight8(sseu->slice_mask) > 1;
508 sseu->has_subslice_pg = 0;
512 static void haswell_sseu_info_init(struct drm_i915_private *dev_priv)
514 struct sseu_dev_info *sseu = &RUNTIME_INFO(dev_priv)->sseu;
519 * There isn't a register to tell us how many slices/subslices. We
520 * work off the PCI-ids here.
522 switch (INTEL_INFO(dev_priv)->gt) {
524 MISSING_CASE(INTEL_INFO(dev_priv)->gt);
527 sseu->slice_mask = BIT(0);
528 sseu->subslice_mask[0] = BIT(0);
531 sseu->slice_mask = BIT(0);
532 sseu->subslice_mask[0] = BIT(0) | BIT(1);
535 sseu->slice_mask = BIT(0) | BIT(1);
536 sseu->subslice_mask[0] = BIT(0) | BIT(1);
537 sseu->subslice_mask[1] = BIT(0) | BIT(1);
541 sseu->max_slices = hweight8(sseu->slice_mask);
542 sseu->max_subslices = hweight8(sseu->subslice_mask[0]);
544 fuse1 = I915_READ(HSW_PAVP_FUSE1);
545 switch ((fuse1 & HSW_F1_EU_DIS_MASK) >> HSW_F1_EU_DIS_SHIFT) {
547 MISSING_CASE((fuse1 & HSW_F1_EU_DIS_MASK) >>
548 HSW_F1_EU_DIS_SHIFT);
550 case HSW_F1_EU_DIS_10EUS:
551 sseu->eu_per_subslice = 10;
553 case HSW_F1_EU_DIS_8EUS:
554 sseu->eu_per_subslice = 8;
556 case HSW_F1_EU_DIS_6EUS:
557 sseu->eu_per_subslice = 6;
560 sseu->max_eus_per_subslice = sseu->eu_per_subslice;
562 for (s = 0; s < sseu->max_slices; s++) {
563 for (ss = 0; ss < sseu->max_subslices; ss++) {
564 sseu_set_eus(sseu, s, ss,
565 (1UL << sseu->eu_per_subslice) - 1);
569 sseu->eu_total = compute_eu_total(sseu);
571 /* No powergating for you. */
572 sseu->has_slice_pg = 0;
573 sseu->has_subslice_pg = 0;
577 static u32 read_reference_ts_freq(struct drm_i915_private *dev_priv)
579 u32 ts_override = I915_READ(GEN9_TIMESTAMP_OVERRIDE);
580 u32 base_freq, frac_freq;
582 base_freq = ((ts_override & GEN9_TIMESTAMP_OVERRIDE_US_COUNTER_DIVIDER_MASK) >>
583 GEN9_TIMESTAMP_OVERRIDE_US_COUNTER_DIVIDER_SHIFT) + 1;
586 frac_freq = ((ts_override &
587 GEN9_TIMESTAMP_OVERRIDE_US_COUNTER_DENOMINATOR_MASK) >>
588 GEN9_TIMESTAMP_OVERRIDE_US_COUNTER_DENOMINATOR_SHIFT);
589 frac_freq = 1000 / (frac_freq + 1);
591 return base_freq + frac_freq;
594 static u32 gen10_get_crystal_clock_freq(struct drm_i915_private *dev_priv,
597 u32 f19_2_mhz = 19200;
599 u32 crystal_clock = (rpm_config_reg &
600 GEN9_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_MASK) >>
601 GEN9_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_SHIFT;
603 switch (crystal_clock) {
604 case GEN9_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_19_2_MHZ:
606 case GEN9_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_24_MHZ:
609 MISSING_CASE(crystal_clock);
614 static u32 gen11_get_crystal_clock_freq(struct drm_i915_private *dev_priv,
617 u32 f19_2_mhz = 19200;
620 u32 f38_4_mhz = 38400;
621 u32 crystal_clock = (rpm_config_reg &
622 GEN11_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_MASK) >>
623 GEN11_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_SHIFT;
625 switch (crystal_clock) {
626 case GEN11_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_24_MHZ:
628 case GEN11_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_19_2_MHZ:
630 case GEN11_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_38_4_MHZ:
632 case GEN11_RPM_CONFIG0_CRYSTAL_CLOCK_FREQ_25_MHZ:
635 MISSING_CASE(crystal_clock);
640 static u32 read_timestamp_frequency(struct drm_i915_private *dev_priv)
642 u32 f12_5_mhz = 12500;
643 u32 f19_2_mhz = 19200;
646 if (INTEL_GEN(dev_priv) <= 4) {
649 * "The value in this register increments once every 16
650 * hclks." (through the “Clocking Configuration”
651 * (“CLKCFG”) MCHBAR register)
653 return dev_priv->rawclk_freq / 16;
654 } else if (INTEL_GEN(dev_priv) <= 8) {
657 * "The PCU TSC counts 10ns increments; this timestamp
658 * reflects bits 38:3 of the TSC (i.e. 80ns granularity,
659 * rolling over every 1.5 hours).
662 } else if (INTEL_GEN(dev_priv) <= 9) {
663 u32 ctc_reg = I915_READ(CTC_MODE);
666 if ((ctc_reg & CTC_SOURCE_PARAMETER_MASK) == CTC_SOURCE_DIVIDE_LOGIC) {
667 freq = read_reference_ts_freq(dev_priv);
669 freq = IS_GEN9_LP(dev_priv) ? f19_2_mhz : f24_mhz;
671 /* Now figure out how the command stream's timestamp
672 * register increments from this frequency (it might
673 * increment only every few clock cycle).
675 freq >>= 3 - ((ctc_reg & CTC_SHIFT_PARAMETER_MASK) >>
676 CTC_SHIFT_PARAMETER_SHIFT);
680 } else if (INTEL_GEN(dev_priv) <= 11) {
681 u32 ctc_reg = I915_READ(CTC_MODE);
684 /* First figure out the reference frequency. There are 2 ways
685 * we can compute the frequency, either through the
686 * TIMESTAMP_OVERRIDE register or through RPM_CONFIG. CTC_MODE
687 * tells us which one we should use.
689 if ((ctc_reg & CTC_SOURCE_PARAMETER_MASK) == CTC_SOURCE_DIVIDE_LOGIC) {
690 freq = read_reference_ts_freq(dev_priv);
692 u32 rpm_config_reg = I915_READ(RPM_CONFIG0);
694 if (INTEL_GEN(dev_priv) <= 10)
695 freq = gen10_get_crystal_clock_freq(dev_priv,
698 freq = gen11_get_crystal_clock_freq(dev_priv,
701 /* Now figure out how the command stream's timestamp
702 * register increments from this frequency (it might
703 * increment only every few clock cycle).
705 freq >>= 3 - ((rpm_config_reg &
706 GEN10_RPM_CONFIG0_CTC_SHIFT_PARAMETER_MASK) >>
707 GEN10_RPM_CONFIG0_CTC_SHIFT_PARAMETER_SHIFT);
713 MISSING_CASE("Unknown gen, unable to read command streamer timestamp frequency\n");
717 #undef INTEL_VGA_DEVICE
718 #define INTEL_VGA_DEVICE(id, info) (id)
720 static const u16 subplatform_ult_ids[] = {
721 INTEL_HSW_ULT_GT1_IDS(0),
722 INTEL_HSW_ULT_GT2_IDS(0),
723 INTEL_HSW_ULT_GT3_IDS(0),
724 INTEL_BDW_ULT_GT1_IDS(0),
725 INTEL_BDW_ULT_GT2_IDS(0),
726 INTEL_BDW_ULT_GT3_IDS(0),
727 INTEL_BDW_ULT_RSVD_IDS(0),
728 INTEL_SKL_ULT_GT1_IDS(0),
729 INTEL_SKL_ULT_GT2_IDS(0),
730 INTEL_SKL_ULT_GT3_IDS(0),
731 INTEL_KBL_ULT_GT1_IDS(0),
732 INTEL_KBL_ULT_GT2_IDS(0),
733 INTEL_KBL_ULT_GT3_IDS(0),
734 INTEL_CFL_U_GT2_IDS(0),
735 INTEL_CFL_U_GT3_IDS(0),
736 INTEL_WHL_U_GT1_IDS(0),
737 INTEL_WHL_U_GT2_IDS(0),
738 INTEL_WHL_U_GT3_IDS(0)
741 static const u16 subplatform_ulx_ids[] = {
742 INTEL_HSW_ULX_GT1_IDS(0),
743 INTEL_HSW_ULX_GT2_IDS(0),
744 INTEL_BDW_ULX_GT1_IDS(0),
745 INTEL_BDW_ULX_GT2_IDS(0),
746 INTEL_BDW_ULX_GT3_IDS(0),
747 INTEL_BDW_ULX_RSVD_IDS(0),
748 INTEL_SKL_ULX_GT1_IDS(0),
749 INTEL_SKL_ULX_GT2_IDS(0),
750 INTEL_KBL_ULX_GT1_IDS(0),
751 INTEL_KBL_ULX_GT2_IDS(0)
754 static const u16 subplatform_aml_ids[] = {
755 INTEL_AML_KBL_GT2_IDS(0),
756 INTEL_AML_CFL_GT2_IDS(0)
759 static const u16 subplatform_portf_ids[] = {
760 INTEL_CNL_PORT_F_IDS(0),
761 INTEL_ICL_PORT_F_IDS(0)
764 static bool find_devid(u16 id, const u16 *p, unsigned int num)
766 for (; num; num--, p++) {
774 void intel_device_info_subplatform_init(struct drm_i915_private *i915)
776 const struct intel_device_info *info = INTEL_INFO(i915);
777 const struct intel_runtime_info *rinfo = RUNTIME_INFO(i915);
778 const unsigned int pi = __platform_mask_index(rinfo, info->platform);
779 const unsigned int pb = __platform_mask_bit(rinfo, info->platform);
780 u16 devid = INTEL_DEVID(i915);
783 /* Make sure IS_<platform> checks are working. */
784 RUNTIME_INFO(i915)->platform_mask[pi] = BIT(pb);
786 /* Find and mark subplatform bits based on the PCI device id. */
787 if (find_devid(devid, subplatform_ult_ids,
788 ARRAY_SIZE(subplatform_ult_ids))) {
789 mask = BIT(INTEL_SUBPLATFORM_ULT);
790 } else if (find_devid(devid, subplatform_ulx_ids,
791 ARRAY_SIZE(subplatform_ulx_ids))) {
792 mask = BIT(INTEL_SUBPLATFORM_ULX);
793 if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
794 /* ULX machines are also considered ULT. */
795 mask |= BIT(INTEL_SUBPLATFORM_ULT);
797 } else if (find_devid(devid, subplatform_aml_ids,
798 ARRAY_SIZE(subplatform_aml_ids))) {
799 mask = BIT(INTEL_SUBPLATFORM_AML);
800 } else if (find_devid(devid, subplatform_portf_ids,
801 ARRAY_SIZE(subplatform_portf_ids))) {
802 mask = BIT(INTEL_SUBPLATFORM_PORTF);
805 GEM_BUG_ON(mask & ~INTEL_SUBPLATFORM_BITS);
807 RUNTIME_INFO(i915)->platform_mask[pi] |= mask;
811 * intel_device_info_runtime_init - initialize runtime info
812 * @dev_priv: the i915 device
814 * Determine various intel_device_info fields at runtime.
816 * Use it when either:
817 * - it's judged too laborious to fill n static structures with the limit
818 * when a simple if statement does the job,
819 * - run-time checks (eg read fuse/strap registers) are needed.
821 * This function needs to be called:
822 * - after the MMIO has been setup as we are reading registers,
823 * - after the PCH has been detected,
824 * - before the first usage of the fields it can tweak.
826 void intel_device_info_runtime_init(struct drm_i915_private *dev_priv)
828 struct intel_device_info *info = mkwrite_device_info(dev_priv);
829 struct intel_runtime_info *runtime = RUNTIME_INFO(dev_priv);
832 if (INTEL_GEN(dev_priv) >= 10) {
833 for_each_pipe(dev_priv, pipe)
834 runtime->num_scalers[pipe] = 2;
835 } else if (IS_GEN(dev_priv, 9)) {
836 runtime->num_scalers[PIPE_A] = 2;
837 runtime->num_scalers[PIPE_B] = 2;
838 runtime->num_scalers[PIPE_C] = 1;
841 BUILD_BUG_ON(BITS_PER_TYPE(intel_engine_mask_t) < I915_NUM_ENGINES);
843 if (INTEL_GEN(dev_priv) >= 11)
844 for_each_pipe(dev_priv, pipe)
845 runtime->num_sprites[pipe] = 6;
846 else if (IS_GEN(dev_priv, 10) || IS_GEMINILAKE(dev_priv))
847 for_each_pipe(dev_priv, pipe)
848 runtime->num_sprites[pipe] = 3;
849 else if (IS_BROXTON(dev_priv)) {
851 * Skylake and Broxton currently don't expose the topmost plane as its
852 * use is exclusive with the legacy cursor and we only want to expose
853 * one of those, not both. Until we can safely expose the topmost plane
854 * as a DRM_PLANE_TYPE_CURSOR with all the features exposed/supported,
855 * we don't expose the topmost plane at all to prevent ABI breakage
859 runtime->num_sprites[PIPE_A] = 2;
860 runtime->num_sprites[PIPE_B] = 2;
861 runtime->num_sprites[PIPE_C] = 1;
862 } else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
863 for_each_pipe(dev_priv, pipe)
864 runtime->num_sprites[pipe] = 2;
865 } else if (INTEL_GEN(dev_priv) >= 5 || IS_G4X(dev_priv)) {
866 for_each_pipe(dev_priv, pipe)
867 runtime->num_sprites[pipe] = 1;
870 if (i915_modparams.disable_display) {
871 DRM_INFO("Display disabled (module parameter)\n");
873 } else if (HAS_DISPLAY(dev_priv) &&
874 (IS_GEN_RANGE(dev_priv, 7, 8)) &&
875 HAS_PCH_SPLIT(dev_priv)) {
876 u32 fuse_strap = I915_READ(FUSE_STRAP);
877 u32 sfuse_strap = I915_READ(SFUSE_STRAP);
880 * SFUSE_STRAP is supposed to have a bit signalling the display
881 * is fused off. Unfortunately it seems that, at least in
882 * certain cases, fused off display means that PCH display
883 * reads don't land anywhere. In that case, we read 0s.
885 * On CPT/PPT, we can detect this case as SFUSE_STRAP_FUSE_LOCK
886 * should be set when taking over after the firmware.
888 if (fuse_strap & ILK_INTERNAL_DISPLAY_DISABLE ||
889 sfuse_strap & SFUSE_STRAP_DISPLAY_DISABLED ||
890 (HAS_PCH_CPT(dev_priv) &&
891 !(sfuse_strap & SFUSE_STRAP_FUSE_LOCK))) {
892 DRM_INFO("Display fused off, disabling\n");
894 } else if (fuse_strap & IVB_PIPE_C_DISABLE) {
895 DRM_INFO("PipeC fused off\n");
896 info->num_pipes -= 1;
898 } else if (HAS_DISPLAY(dev_priv) && INTEL_GEN(dev_priv) >= 9) {
899 u32 dfsm = I915_READ(SKL_DFSM);
900 u8 disabled_mask = 0;
904 if (dfsm & SKL_DFSM_PIPE_A_DISABLE)
905 disabled_mask |= BIT(PIPE_A);
906 if (dfsm & SKL_DFSM_PIPE_B_DISABLE)
907 disabled_mask |= BIT(PIPE_B);
908 if (dfsm & SKL_DFSM_PIPE_C_DISABLE)
909 disabled_mask |= BIT(PIPE_C);
911 num_bits = hweight8(disabled_mask);
913 switch (disabled_mask) {
916 case BIT(PIPE_A) | BIT(PIPE_B):
917 case BIT(PIPE_A) | BIT(PIPE_C):
924 if (num_bits > info->num_pipes || invalid)
925 DRM_ERROR("invalid pipe fuse configuration: 0x%x\n",
928 info->num_pipes -= num_bits;
931 /* Initialize slice/subslice/EU info */
932 if (IS_HASWELL(dev_priv))
933 haswell_sseu_info_init(dev_priv);
934 else if (IS_CHERRYVIEW(dev_priv))
935 cherryview_sseu_info_init(dev_priv);
936 else if (IS_BROADWELL(dev_priv))
937 broadwell_sseu_info_init(dev_priv);
938 else if (IS_GEN(dev_priv, 9))
939 gen9_sseu_info_init(dev_priv);
940 else if (IS_GEN(dev_priv, 10))
941 gen10_sseu_info_init(dev_priv);
942 else if (INTEL_GEN(dev_priv) >= 11)
943 gen11_sseu_info_init(dev_priv);
945 if (IS_GEN(dev_priv, 6) && intel_vtd_active()) {
946 DRM_INFO("Disabling ppGTT for VT-d support\n");
947 info->ppgtt_type = INTEL_PPGTT_NONE;
950 /* Initialize command stream timestamp frequency */
951 runtime->cs_timestamp_frequency_khz = read_timestamp_frequency(dev_priv);
954 void intel_driver_caps_print(const struct intel_driver_caps *caps,
955 struct drm_printer *p)
957 drm_printf(p, "Has logical contexts? %s\n",
958 yesno(caps->has_logical_contexts));
959 drm_printf(p, "scheduler: %x\n", caps->scheduler);
963 * Determine which engines are fused off in our particular hardware. Since the
964 * fuse register is in the blitter powerwell, we need forcewake to be ready at
965 * this point (but later we need to prune the forcewake domains for engines that
966 * are indeed fused off).
968 void intel_device_info_init_mmio(struct drm_i915_private *dev_priv)
970 struct intel_device_info *info = mkwrite_device_info(dev_priv);
971 unsigned int logical_vdbox = 0;
977 if (INTEL_GEN(dev_priv) < 11)
980 media_fuse = ~I915_READ(GEN11_GT_VEBOX_VDBOX_DISABLE);
982 vdbox_mask = media_fuse & GEN11_GT_VDBOX_DISABLE_MASK;
983 vebox_mask = (media_fuse & GEN11_GT_VEBOX_DISABLE_MASK) >>
984 GEN11_GT_VEBOX_DISABLE_SHIFT;
986 for (i = 0; i < I915_MAX_VCS; i++) {
987 if (!HAS_ENGINE(dev_priv, _VCS(i)))
990 if (!(BIT(i) & vdbox_mask)) {
991 info->engine_mask &= ~BIT(_VCS(i));
992 DRM_DEBUG_DRIVER("vcs%u fused off\n", i);
997 * In Gen11, only even numbered logical VDBOXes are
998 * hooked up to an SFC (Scaler & Format Converter) unit.
1000 if (logical_vdbox++ % 2 == 0)
1001 RUNTIME_INFO(dev_priv)->vdbox_sfc_access |= BIT(i);
1003 DRM_DEBUG_DRIVER("vdbox enable: %04x, instances: %04lx\n",
1004 vdbox_mask, VDBOX_MASK(dev_priv));
1005 GEM_BUG_ON(vdbox_mask != VDBOX_MASK(dev_priv));
1007 for (i = 0; i < I915_MAX_VECS; i++) {
1008 if (!HAS_ENGINE(dev_priv, _VECS(i)))
1011 if (!(BIT(i) & vebox_mask)) {
1012 info->engine_mask &= ~BIT(_VECS(i));
1013 DRM_DEBUG_DRIVER("vecs%u fused off\n", i);
1016 DRM_DEBUG_DRIVER("vebox enable: %04x, instances: %04lx\n",
1017 vebox_mask, VEBOX_MASK(dev_priv));
1018 GEM_BUG_ON(vebox_mask != VEBOX_MASK(dev_priv));