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intel/dev: flag the Elkhart Lake platform
[mesa.git] / src / intel / dev / gen_device_info.c
1 /*
2 * Copyright © 2013 Intel Corporation
3 *
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:
10 *
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
13 * Software.
14 *
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
21 * IN THE SOFTWARE.
22 */
23
24 #include <assert.h>
25 #include <stdbool.h>
26 #include <stdio.h>
27 #include <stdlib.h>
28 #include <string.h>
29 #include <unistd.h>
30 #include "gen_device_info.h"
31 #include "compiler/shader_enums.h"
32 #include "intel/common/gen_gem.h"
33 #include "util/bitscan.h"
34 #include "util/macros.h"
35
36 #include "drm-uapi/i915_drm.h"
37
38 /**
39 * Get the PCI ID for the device name.
40 *
41 * Returns -1 if the device is not known.
42 */
43 int
44 gen_device_name_to_pci_device_id(const char *name)
45 {
46 static const struct {
47 const char *name;
48 int pci_id;
49 } name_map[] = {
50 { "brw", 0x2a02 },
51 { "g4x", 0x2a42 },
52 { "ilk", 0x0042 },
53 { "snb", 0x0126 },
54 { "ivb", 0x016a },
55 { "hsw", 0x0d2e },
56 { "byt", 0x0f33 },
57 { "bdw", 0x162e },
58 { "chv", 0x22B3 },
59 { "skl", 0x1912 },
60 { "bxt", 0x5A85 },
61 { "kbl", 0x5912 },
62 { "aml", 0x591C },
63 { "glk", 0x3185 },
64 { "cfl", 0x3E9B },
65 { "whl", 0x3EA1 },
66 { "cml", 0x9b41 },
67 { "cnl", 0x5a52 },
68 { "icl", 0x8a52 },
69 { "ehl", 0x4500 },
70 { "tgl", 0x9a49 },
71 };
72
73 for (unsigned i = 0; i < ARRAY_SIZE(name_map); i++) {
74 if (!strcmp(name_map[i].name, name))
75 return name_map[i].pci_id;
76 }
77
78 return -1;
79 }
80
81 /**
82 * Get the overridden PCI ID for the device. This is set with the
83 * INTEL_DEVID_OVERRIDE environment variable.
84 *
85 * Returns -1 if the override is not set.
86 */
87 static int
88 get_pci_device_id_override(void)
89 {
90 if (geteuid() == getuid()) {
91 const char *devid_override = getenv("INTEL_DEVID_OVERRIDE");
92 if (devid_override) {
93 const int id = gen_device_name_to_pci_device_id(devid_override);
94 return id >= 0 ? id : strtol(devid_override, NULL, 0);
95 }
96 }
97
98 return -1;
99 }
100
101 static const struct gen_device_info gen_device_info_i965 = {
102 .gen = 4,
103 .has_negative_rhw_bug = true,
104 .num_slices = 1,
105 .num_subslices = { 1, },
106 .num_eu_per_subslice = 8,
107 .num_thread_per_eu = 4,
108 .max_vs_threads = 16,
109 .max_gs_threads = 2,
110 .max_wm_threads = 8 * 4,
111 .urb = {
112 .size = 256,
113 },
114 .timestamp_frequency = 12500000,
115 .simulator_id = -1,
116 };
117
118 static const struct gen_device_info gen_device_info_g4x = {
119 .gen = 4,
120 .has_pln = true,
121 .has_compr4 = true,
122 .has_surface_tile_offset = true,
123 .is_g4x = true,
124 .num_slices = 1,
125 .num_subslices = { 1, },
126 .num_eu_per_subslice = 10,
127 .num_thread_per_eu = 5,
128 .max_vs_threads = 32,
129 .max_gs_threads = 2,
130 .max_wm_threads = 10 * 5,
131 .urb = {
132 .size = 384,
133 },
134 .timestamp_frequency = 12500000,
135 .simulator_id = -1,
136 };
137
138 static const struct gen_device_info gen_device_info_ilk = {
139 .gen = 5,
140 .has_pln = true,
141 .has_compr4 = true,
142 .has_surface_tile_offset = true,
143 .num_slices = 1,
144 .num_subslices = { 1, },
145 .num_eu_per_subslice = 12,
146 .num_thread_per_eu = 6,
147 .max_vs_threads = 72,
148 .max_gs_threads = 32,
149 .max_wm_threads = 12 * 6,
150 .urb = {
151 .size = 1024,
152 },
153 .timestamp_frequency = 12500000,
154 .simulator_id = -1,
155 };
156
157 static const struct gen_device_info gen_device_info_snb_gt1 = {
158 .gen = 6,
159 .gt = 1,
160 .has_hiz_and_separate_stencil = true,
161 .has_llc = true,
162 .has_pln = true,
163 .has_surface_tile_offset = true,
164 .needs_unlit_centroid_workaround = true,
165 .num_slices = 1,
166 .num_subslices = { 1, },
167 .num_eu_per_subslice = 6,
168 .num_thread_per_eu = 6, /* Not confirmed */
169 .max_vs_threads = 24,
170 .max_gs_threads = 21, /* conservative; 24 if rendering disabled. */
171 .max_wm_threads = 40,
172 .urb = {
173 .size = 32,
174 .min_entries = {
175 [MESA_SHADER_VERTEX] = 24,
176 },
177 .max_entries = {
178 [MESA_SHADER_VERTEX] = 256,
179 [MESA_SHADER_GEOMETRY] = 256,
180 },
181 },
182 .timestamp_frequency = 12500000,
183 .simulator_id = -1,
184 };
185
186 static const struct gen_device_info gen_device_info_snb_gt2 = {
187 .gen = 6,
188 .gt = 2,
189 .has_hiz_and_separate_stencil = true,
190 .has_llc = true,
191 .has_pln = true,
192 .has_surface_tile_offset = true,
193 .needs_unlit_centroid_workaround = true,
194 .num_slices = 1,
195 .num_subslices = { 1, },
196 .num_eu_per_subslice = 12,
197 .num_thread_per_eu = 6, /* Not confirmed */
198 .max_vs_threads = 60,
199 .max_gs_threads = 60,
200 .max_wm_threads = 80,
201 .urb = {
202 .size = 64,
203 .min_entries = {
204 [MESA_SHADER_VERTEX] = 24,
205 },
206 .max_entries = {
207 [MESA_SHADER_VERTEX] = 256,
208 [MESA_SHADER_GEOMETRY] = 256,
209 },
210 },
211 .timestamp_frequency = 12500000,
212 .simulator_id = -1,
213 };
214
215 #define GEN7_FEATURES \
216 .gen = 7, \
217 .has_hiz_and_separate_stencil = true, \
218 .must_use_separate_stencil = true, \
219 .has_llc = true, \
220 .has_pln = true, \
221 .has_64bit_types = true, \
222 .has_surface_tile_offset = true, \
223 .timestamp_frequency = 12500000
224
225 static const struct gen_device_info gen_device_info_ivb_gt1 = {
226 GEN7_FEATURES, .is_ivybridge = true, .gt = 1,
227 .num_slices = 1,
228 .num_subslices = { 1, },
229 .num_eu_per_subslice = 6,
230 .num_thread_per_eu = 6,
231 .l3_banks = 2,
232 .max_vs_threads = 36,
233 .max_tcs_threads = 36,
234 .max_tes_threads = 36,
235 .max_gs_threads = 36,
236 .max_wm_threads = 48,
237 .max_cs_threads = 36,
238 .urb = {
239 .size = 128,
240 .min_entries = {
241 [MESA_SHADER_VERTEX] = 32,
242 [MESA_SHADER_TESS_EVAL] = 10,
243 },
244 .max_entries = {
245 [MESA_SHADER_VERTEX] = 512,
246 [MESA_SHADER_TESS_CTRL] = 32,
247 [MESA_SHADER_TESS_EVAL] = 288,
248 [MESA_SHADER_GEOMETRY] = 192,
249 },
250 },
251 .simulator_id = 7,
252 };
253
254 static const struct gen_device_info gen_device_info_ivb_gt2 = {
255 GEN7_FEATURES, .is_ivybridge = true, .gt = 2,
256 .num_slices = 1,
257 .num_subslices = { 1, },
258 .num_eu_per_subslice = 12,
259 .num_thread_per_eu = 8, /* Not sure why this isn't a multiple of
260 * @max_wm_threads ... */
261 .l3_banks = 4,
262 .max_vs_threads = 128,
263 .max_tcs_threads = 128,
264 .max_tes_threads = 128,
265 .max_gs_threads = 128,
266 .max_wm_threads = 172,
267 .max_cs_threads = 64,
268 .urb = {
269 .size = 256,
270 .min_entries = {
271 [MESA_SHADER_VERTEX] = 32,
272 [MESA_SHADER_TESS_EVAL] = 10,
273 },
274 .max_entries = {
275 [MESA_SHADER_VERTEX] = 704,
276 [MESA_SHADER_TESS_CTRL] = 64,
277 [MESA_SHADER_TESS_EVAL] = 448,
278 [MESA_SHADER_GEOMETRY] = 320,
279 },
280 },
281 .simulator_id = 7,
282 };
283
284 static const struct gen_device_info gen_device_info_byt = {
285 GEN7_FEATURES, .is_baytrail = true, .gt = 1,
286 .num_slices = 1,
287 .num_subslices = { 1, },
288 .num_eu_per_subslice = 4,
289 .num_thread_per_eu = 8,
290 .l3_banks = 1,
291 .has_llc = false,
292 .max_vs_threads = 36,
293 .max_tcs_threads = 36,
294 .max_tes_threads = 36,
295 .max_gs_threads = 36,
296 .max_wm_threads = 48,
297 .max_cs_threads = 32,
298 .urb = {
299 .size = 128,
300 .min_entries = {
301 [MESA_SHADER_VERTEX] = 32,
302 [MESA_SHADER_TESS_EVAL] = 10,
303 },
304 .max_entries = {
305 [MESA_SHADER_VERTEX] = 512,
306 [MESA_SHADER_TESS_CTRL] = 32,
307 [MESA_SHADER_TESS_EVAL] = 288,
308 [MESA_SHADER_GEOMETRY] = 192,
309 },
310 },
311 .simulator_id = 10,
312 };
313
314 #define HSW_FEATURES \
315 GEN7_FEATURES, \
316 .is_haswell = true, \
317 .supports_simd16_3src = true, \
318 .has_resource_streamer = true
319
320 static const struct gen_device_info gen_device_info_hsw_gt1 = {
321 HSW_FEATURES, .gt = 1,
322 .num_slices = 1,
323 .num_subslices = { 1, },
324 .num_eu_per_subslice = 10,
325 .num_thread_per_eu = 7,
326 .l3_banks = 2,
327 .max_vs_threads = 70,
328 .max_tcs_threads = 70,
329 .max_tes_threads = 70,
330 .max_gs_threads = 70,
331 .max_wm_threads = 102,
332 .max_cs_threads = 70,
333 .urb = {
334 .size = 128,
335 .min_entries = {
336 [MESA_SHADER_VERTEX] = 32,
337 [MESA_SHADER_TESS_EVAL] = 10,
338 },
339 .max_entries = {
340 [MESA_SHADER_VERTEX] = 640,
341 [MESA_SHADER_TESS_CTRL] = 64,
342 [MESA_SHADER_TESS_EVAL] = 384,
343 [MESA_SHADER_GEOMETRY] = 256,
344 },
345 },
346 .simulator_id = 9,
347 };
348
349 static const struct gen_device_info gen_device_info_hsw_gt2 = {
350 HSW_FEATURES, .gt = 2,
351 .num_slices = 1,
352 .num_subslices = { 2, },
353 .num_eu_per_subslice = 10,
354 .num_thread_per_eu = 7,
355 .l3_banks = 4,
356 .max_vs_threads = 280,
357 .max_tcs_threads = 256,
358 .max_tes_threads = 280,
359 .max_gs_threads = 256,
360 .max_wm_threads = 204,
361 .max_cs_threads = 70,
362 .urb = {
363 .size = 256,
364 .min_entries = {
365 [MESA_SHADER_VERTEX] = 64,
366 [MESA_SHADER_TESS_EVAL] = 10,
367 },
368 .max_entries = {
369 [MESA_SHADER_VERTEX] = 1664,
370 [MESA_SHADER_TESS_CTRL] = 128,
371 [MESA_SHADER_TESS_EVAL] = 960,
372 [MESA_SHADER_GEOMETRY] = 640,
373 },
374 },
375 .simulator_id = 9,
376 };
377
378 static const struct gen_device_info gen_device_info_hsw_gt3 = {
379 HSW_FEATURES, .gt = 3,
380 .num_slices = 2,
381 .num_subslices = { 2, },
382 .num_eu_per_subslice = 10,
383 .num_thread_per_eu = 7,
384 .l3_banks = 8,
385 .max_vs_threads = 280,
386 .max_tcs_threads = 256,
387 .max_tes_threads = 280,
388 .max_gs_threads = 256,
389 .max_wm_threads = 408,
390 .max_cs_threads = 70,
391 .urb = {
392 .size = 512,
393 .min_entries = {
394 [MESA_SHADER_VERTEX] = 64,
395 [MESA_SHADER_TESS_EVAL] = 10,
396 },
397 .max_entries = {
398 [MESA_SHADER_VERTEX] = 1664,
399 [MESA_SHADER_TESS_CTRL] = 128,
400 [MESA_SHADER_TESS_EVAL] = 960,
401 [MESA_SHADER_GEOMETRY] = 640,
402 },
403 },
404 .simulator_id = 9,
405 };
406
407 /* It's unclear how well supported sampling from the hiz buffer is on GEN8,
408 * so keep things conservative for now and set has_sample_with_hiz = false.
409 */
410 #define GEN8_FEATURES \
411 .gen = 8, \
412 .has_hiz_and_separate_stencil = true, \
413 .has_resource_streamer = true, \
414 .must_use_separate_stencil = true, \
415 .has_llc = true, \
416 .has_sample_with_hiz = false, \
417 .has_pln = true, \
418 .has_integer_dword_mul = true, \
419 .has_64bit_types = true, \
420 .supports_simd16_3src = true, \
421 .has_surface_tile_offset = true, \
422 .num_thread_per_eu = 7, \
423 .max_vs_threads = 504, \
424 .max_tcs_threads = 504, \
425 .max_tes_threads = 504, \
426 .max_gs_threads = 504, \
427 .max_wm_threads = 384, \
428 .timestamp_frequency = 12500000
429
430 static const struct gen_device_info gen_device_info_bdw_gt1 = {
431 GEN8_FEATURES, .gt = 1,
432 .is_broadwell = true,
433 .num_slices = 1,
434 .num_subslices = { 2, },
435 .num_eu_per_subslice = 8,
436 .l3_banks = 2,
437 .max_cs_threads = 42,
438 .urb = {
439 .size = 192,
440 .min_entries = {
441 [MESA_SHADER_VERTEX] = 64,
442 [MESA_SHADER_TESS_EVAL] = 34,
443 },
444 .max_entries = {
445 [MESA_SHADER_VERTEX] = 2560,
446 [MESA_SHADER_TESS_CTRL] = 504,
447 [MESA_SHADER_TESS_EVAL] = 1536,
448 [MESA_SHADER_GEOMETRY] = 960,
449 },
450 },
451 .simulator_id = 11,
452 };
453
454 static const struct gen_device_info gen_device_info_bdw_gt2 = {
455 GEN8_FEATURES, .gt = 2,
456 .is_broadwell = true,
457 .num_slices = 1,
458 .num_subslices = { 3, },
459 .num_eu_per_subslice = 8,
460 .l3_banks = 4,
461 .max_cs_threads = 56,
462 .urb = {
463 .size = 384,
464 .min_entries = {
465 [MESA_SHADER_VERTEX] = 64,
466 [MESA_SHADER_TESS_EVAL] = 34,
467 },
468 .max_entries = {
469 [MESA_SHADER_VERTEX] = 2560,
470 [MESA_SHADER_TESS_CTRL] = 504,
471 [MESA_SHADER_TESS_EVAL] = 1536,
472 [MESA_SHADER_GEOMETRY] = 960,
473 },
474 },
475 .simulator_id = 11,
476 };
477
478 static const struct gen_device_info gen_device_info_bdw_gt3 = {
479 GEN8_FEATURES, .gt = 3,
480 .is_broadwell = true,
481 .num_slices = 2,
482 .num_subslices = { 3, 3, },
483 .num_eu_per_subslice = 8,
484 .l3_banks = 8,
485 .max_cs_threads = 56,
486 .urb = {
487 .size = 384,
488 .min_entries = {
489 [MESA_SHADER_VERTEX] = 64,
490 [MESA_SHADER_TESS_EVAL] = 34,
491 },
492 .max_entries = {
493 [MESA_SHADER_VERTEX] = 2560,
494 [MESA_SHADER_TESS_CTRL] = 504,
495 [MESA_SHADER_TESS_EVAL] = 1536,
496 [MESA_SHADER_GEOMETRY] = 960,
497 },
498 },
499 .simulator_id = 11,
500 };
501
502 static const struct gen_device_info gen_device_info_chv = {
503 GEN8_FEATURES, .is_cherryview = 1, .gt = 1,
504 .has_llc = false,
505 .has_integer_dword_mul = false,
506 .num_slices = 1,
507 .num_subslices = { 2, },
508 .num_eu_per_subslice = 8,
509 .l3_banks = 2,
510 .max_vs_threads = 80,
511 .max_tcs_threads = 80,
512 .max_tes_threads = 80,
513 .max_gs_threads = 80,
514 .max_wm_threads = 128,
515 .max_cs_threads = 6 * 7,
516 .urb = {
517 .size = 192,
518 .min_entries = {
519 [MESA_SHADER_VERTEX] = 34,
520 [MESA_SHADER_TESS_EVAL] = 34,
521 },
522 .max_entries = {
523 [MESA_SHADER_VERTEX] = 640,
524 [MESA_SHADER_TESS_CTRL] = 80,
525 [MESA_SHADER_TESS_EVAL] = 384,
526 [MESA_SHADER_GEOMETRY] = 256,
527 },
528 },
529 .simulator_id = 13,
530 };
531
532 #define GEN9_HW_INFO \
533 .gen = 9, \
534 .max_vs_threads = 336, \
535 .max_gs_threads = 336, \
536 .max_tcs_threads = 336, \
537 .max_tes_threads = 336, \
538 .max_cs_threads = 56, \
539 .timestamp_frequency = 12000000, \
540 .urb = { \
541 .size = 384, \
542 .min_entries = { \
543 [MESA_SHADER_VERTEX] = 64, \
544 [MESA_SHADER_TESS_EVAL] = 34, \
545 }, \
546 .max_entries = { \
547 [MESA_SHADER_VERTEX] = 1856, \
548 [MESA_SHADER_TESS_CTRL] = 672, \
549 [MESA_SHADER_TESS_EVAL] = 1120, \
550 [MESA_SHADER_GEOMETRY] = 640, \
551 }, \
552 }
553
554 #define GEN9_LP_FEATURES \
555 GEN8_FEATURES, \
556 GEN9_HW_INFO, \
557 .has_integer_dword_mul = false, \
558 .gt = 1, \
559 .has_llc = false, \
560 .has_sample_with_hiz = true, \
561 .num_slices = 1, \
562 .num_thread_per_eu = 6, \
563 .max_vs_threads = 112, \
564 .max_tcs_threads = 112, \
565 .max_tes_threads = 112, \
566 .max_gs_threads = 112, \
567 .max_cs_threads = 6 * 6, \
568 .timestamp_frequency = 19200000, \
569 .urb = { \
570 .size = 192, \
571 .min_entries = { \
572 [MESA_SHADER_VERTEX] = 34, \
573 [MESA_SHADER_TESS_EVAL] = 34, \
574 }, \
575 .max_entries = { \
576 [MESA_SHADER_VERTEX] = 704, \
577 [MESA_SHADER_TESS_CTRL] = 256, \
578 [MESA_SHADER_TESS_EVAL] = 416, \
579 [MESA_SHADER_GEOMETRY] = 256, \
580 }, \
581 }
582
583 #define GEN9_LP_FEATURES_3X6 \
584 GEN9_LP_FEATURES, \
585 .num_subslices = { 3, }, \
586 .num_eu_per_subslice = 6
587
588 #define GEN9_LP_FEATURES_2X6 \
589 GEN9_LP_FEATURES, \
590 .num_subslices = { 2, }, \
591 .num_eu_per_subslice = 6, \
592 .max_vs_threads = 56, \
593 .max_tcs_threads = 56, \
594 .max_tes_threads = 56, \
595 .max_gs_threads = 56, \
596 .max_cs_threads = 6 * 6, \
597 .urb = { \
598 .size = 128, \
599 .min_entries = { \
600 [MESA_SHADER_VERTEX] = 34, \
601 [MESA_SHADER_TESS_EVAL] = 34, \
602 }, \
603 .max_entries = { \
604 [MESA_SHADER_VERTEX] = 352, \
605 [MESA_SHADER_TESS_CTRL] = 128, \
606 [MESA_SHADER_TESS_EVAL] = 208, \
607 [MESA_SHADER_GEOMETRY] = 128, \
608 }, \
609 }
610
611 #define GEN9_FEATURES \
612 GEN8_FEATURES, \
613 GEN9_HW_INFO, \
614 .has_sample_with_hiz = true
615
616 static const struct gen_device_info gen_device_info_skl_gt1 = {
617 GEN9_FEATURES, .gt = 1,
618 .is_skylake = true,
619 .num_slices = 1,
620 .num_subslices = { 2, },
621 .num_eu_per_subslice = 6,
622 .l3_banks = 2,
623 .urb.size = 192,
624 /* GT1 seems to have a bug in the top of the pipe (VF/VS?) fixed functions
625 * leading to some vertices to go missing if we use too much URB.
626 */
627 .urb.max_entries[MESA_SHADER_VERTEX] = 928,
628 .simulator_id = 12,
629 };
630
631 static const struct gen_device_info gen_device_info_skl_gt2 = {
632 GEN9_FEATURES, .gt = 2,
633 .is_skylake = true,
634 .num_slices = 1,
635 .num_subslices = { 3, },
636 .num_eu_per_subslice = 8,
637 .l3_banks = 4,
638 .simulator_id = 12,
639 };
640
641 static const struct gen_device_info gen_device_info_skl_gt3 = {
642 GEN9_FEATURES, .gt = 3,
643 .is_skylake = true,
644 .num_slices = 2,
645 .num_subslices = { 3, 3, },
646 .num_eu_per_subslice = 8,
647 .l3_banks = 8,
648 .simulator_id = 12,
649 };
650
651 static const struct gen_device_info gen_device_info_skl_gt4 = {
652 GEN9_FEATURES, .gt = 4,
653 .is_skylake = true,
654 .num_slices = 3,
655 .num_subslices = { 3, 3, 3, },
656 .num_eu_per_subslice = 8,
657 .l3_banks = 12,
658 /* From the "L3 Allocation and Programming" documentation:
659 *
660 * "URB is limited to 1008KB due to programming restrictions. This is not a
661 * restriction of the L3 implementation, but of the FF and other clients.
662 * Therefore, in a GT4 implementation it is possible for the programmed
663 * allocation of the L3 data array to provide 3*384KB=1152KB for URB, but
664 * only 1008KB of this will be used."
665 */
666 .urb.size = 1008 / 3,
667 .simulator_id = 12,
668 };
669
670 static const struct gen_device_info gen_device_info_bxt = {
671 GEN9_LP_FEATURES_3X6,
672 .is_broxton = true,
673 .l3_banks = 2,
674 .simulator_id = 14,
675 };
676
677 static const struct gen_device_info gen_device_info_bxt_2x6 = {
678 GEN9_LP_FEATURES_2X6,
679 .is_broxton = true,
680 .l3_banks = 1,
681 .simulator_id = 14,
682 };
683 /*
684 * Note: for all KBL SKUs, the PRM says SKL for GS entries, not SKL+.
685 * There's no KBL entry. Using the default SKL (GEN9) GS entries value.
686 */
687
688 static const struct gen_device_info gen_device_info_kbl_gt1 = {
689 GEN9_FEATURES,
690 .is_kabylake = true,
691 .gt = 1,
692
693 .max_cs_threads = 7 * 6,
694 .urb.size = 192,
695 .num_slices = 1,
696 .num_subslices = { 2, },
697 .num_eu_per_subslice = 6,
698 .l3_banks = 2,
699 /* GT1 seems to have a bug in the top of the pipe (VF/VS?) fixed functions
700 * leading to some vertices to go missing if we use too much URB.
701 */
702 .urb.max_entries[MESA_SHADER_VERTEX] = 928,
703 .simulator_id = 16,
704 };
705
706 static const struct gen_device_info gen_device_info_kbl_gt1_5 = {
707 GEN9_FEATURES,
708 .is_kabylake = true,
709 .gt = 1,
710
711 .max_cs_threads = 7 * 6,
712 .num_slices = 1,
713 .num_subslices = { 3, },
714 .num_eu_per_subslice = 6,
715 .l3_banks = 4,
716 .simulator_id = 16,
717 };
718
719 static const struct gen_device_info gen_device_info_kbl_gt2 = {
720 GEN9_FEATURES,
721 .is_kabylake = true,
722 .gt = 2,
723
724 .num_slices = 1,
725 .num_subslices = { 3, },
726 .num_eu_per_subslice = 8,
727 .l3_banks = 4,
728 .simulator_id = 16,
729 };
730
731 static const struct gen_device_info gen_device_info_kbl_gt3 = {
732 GEN9_FEATURES,
733 .is_kabylake = true,
734 .gt = 3,
735
736 .num_slices = 2,
737 .num_subslices = { 3, 3, },
738 .num_eu_per_subslice = 8,
739 .l3_banks = 8,
740 .simulator_id = 16,
741 };
742
743 static const struct gen_device_info gen_device_info_kbl_gt4 = {
744 GEN9_FEATURES,
745 .is_kabylake = true,
746 .gt = 4,
747
748 /*
749 * From the "L3 Allocation and Programming" documentation:
750 *
751 * "URB is limited to 1008KB due to programming restrictions. This
752 * is not a restriction of the L3 implementation, but of the FF and
753 * other clients. Therefore, in a GT4 implementation it is
754 * possible for the programmed allocation of the L3 data array to
755 * provide 3*384KB=1152KB for URB, but only 1008KB of this
756 * will be used."
757 */
758 .urb.size = 1008 / 3,
759 .num_slices = 3,
760 .num_subslices = { 3, 3, 3, },
761 .num_eu_per_subslice = 8,
762 .l3_banks = 12,
763 .simulator_id = 16,
764 };
765
766 static const struct gen_device_info gen_device_info_glk = {
767 GEN9_LP_FEATURES_3X6,
768 .is_geminilake = true,
769 .l3_banks = 2,
770 .simulator_id = 17,
771 };
772
773 static const struct gen_device_info gen_device_info_glk_2x6 = {
774 GEN9_LP_FEATURES_2X6,
775 .is_geminilake = true,
776 .l3_banks = 2,
777 .simulator_id = 17,
778 };
779
780 static const struct gen_device_info gen_device_info_cfl_gt1 = {
781 GEN9_FEATURES,
782 .is_coffeelake = true,
783 .gt = 1,
784
785 .num_slices = 1,
786 .num_subslices = { 2, },
787 .num_eu_per_subslice = 6,
788 .l3_banks = 2,
789 .urb.size = 192,
790 /* GT1 seems to have a bug in the top of the pipe (VF/VS?) fixed functions
791 * leading to some vertices to go missing if we use too much URB.
792 */
793 .urb.max_entries[MESA_SHADER_VERTEX] = 928,
794 .simulator_id = 24,
795 };
796 static const struct gen_device_info gen_device_info_cfl_gt2 = {
797 GEN9_FEATURES,
798 .is_coffeelake = true,
799 .gt = 2,
800
801 .num_slices = 1,
802 .num_subslices = { 3, },
803 .num_eu_per_subslice = 8,
804 .l3_banks = 4,
805 .simulator_id = 24,
806 };
807
808 static const struct gen_device_info gen_device_info_cfl_gt3 = {
809 GEN9_FEATURES,
810 .is_coffeelake = true,
811 .gt = 3,
812
813 .num_slices = 2,
814 .num_subslices = { 3, 3, },
815 .num_eu_per_subslice = 8,
816 .l3_banks = 8,
817 .simulator_id = 24,
818 };
819
820 #define GEN10_HW_INFO \
821 .gen = 10, \
822 .num_thread_per_eu = 7, \
823 .max_vs_threads = 728, \
824 .max_gs_threads = 432, \
825 .max_tcs_threads = 432, \
826 .max_tes_threads = 624, \
827 .max_cs_threads = 56, \
828 .timestamp_frequency = 19200000, \
829 .urb = { \
830 .size = 256, \
831 .min_entries = { \
832 [MESA_SHADER_VERTEX] = 64, \
833 [MESA_SHADER_TESS_EVAL] = 34, \
834 }, \
835 .max_entries = { \
836 [MESA_SHADER_VERTEX] = 3936, \
837 [MESA_SHADER_TESS_CTRL] = 896, \
838 [MESA_SHADER_TESS_EVAL] = 2064, \
839 [MESA_SHADER_GEOMETRY] = 832, \
840 }, \
841 }
842
843 #define subslices(args...) { args, }
844
845 #define GEN10_FEATURES(_gt, _slices, _subslices, _l3) \
846 GEN8_FEATURES, \
847 GEN10_HW_INFO, \
848 .has_sample_with_hiz = true, \
849 .gt = _gt, \
850 .num_slices = _slices, \
851 .num_subslices = _subslices, \
852 .num_eu_per_subslice = 8, \
853 .l3_banks = _l3
854
855 static const struct gen_device_info gen_device_info_cnl_2x8 = {
856 /* GT0.5 */
857 GEN10_FEATURES(1, 1, subslices(2), 2),
858 .is_cannonlake = true,
859 .simulator_id = 15,
860 };
861
862 static const struct gen_device_info gen_device_info_cnl_3x8 = {
863 /* GT1 */
864 GEN10_FEATURES(1, 1, subslices(3), 3),
865 .is_cannonlake = true,
866 .simulator_id = 15,
867 };
868
869 static const struct gen_device_info gen_device_info_cnl_4x8 = {
870 /* GT 1.5 */
871 GEN10_FEATURES(1, 2, subslices(2, 2), 6),
872 .is_cannonlake = true,
873 .simulator_id = 15,
874 };
875
876 static const struct gen_device_info gen_device_info_cnl_5x8 = {
877 /* GT2 */
878 GEN10_FEATURES(2, 2, subslices(3, 2), 6),
879 .is_cannonlake = true,
880 .simulator_id = 15,
881 };
882
883 #define GEN11_HW_INFO \
884 .gen = 11, \
885 .has_pln = false, \
886 .max_vs_threads = 364, \
887 .max_gs_threads = 224, \
888 .max_tcs_threads = 224, \
889 .max_tes_threads = 364, \
890 .max_cs_threads = 56
891
892 #define GEN11_FEATURES(_gt, _slices, _subslices, _l3) \
893 GEN8_FEATURES, \
894 GEN11_HW_INFO, \
895 .has_64bit_types = false, \
896 .has_integer_dword_mul = false, \
897 .has_sample_with_hiz = false, \
898 .gt = _gt, .num_slices = _slices, .l3_banks = _l3, \
899 .num_subslices = _subslices, \
900 .num_eu_per_subslice = 8
901
902 #define GEN11_URB_MIN_MAX_ENTRIES \
903 .min_entries = { \
904 [MESA_SHADER_VERTEX] = 64, \
905 [MESA_SHADER_TESS_EVAL] = 34, \
906 }, \
907 .max_entries = { \
908 [MESA_SHADER_VERTEX] = 2384, \
909 [MESA_SHADER_TESS_CTRL] = 1032, \
910 [MESA_SHADER_TESS_EVAL] = 2384, \
911 [MESA_SHADER_GEOMETRY] = 1032, \
912 }
913
914 static const struct gen_device_info gen_device_info_icl_8x8 = {
915 GEN11_FEATURES(2, 1, subslices(8), 8),
916 .urb = {
917 .size = 1024,
918 GEN11_URB_MIN_MAX_ENTRIES,
919 },
920 .simulator_id = 19,
921 };
922
923 static const struct gen_device_info gen_device_info_icl_6x8 = {
924 GEN11_FEATURES(1, 1, subslices(6), 6),
925 .urb = {
926 .size = 768,
927 GEN11_URB_MIN_MAX_ENTRIES,
928 },
929 .simulator_id = 19,
930 };
931
932 static const struct gen_device_info gen_device_info_icl_4x8 = {
933 GEN11_FEATURES(1, 1, subslices(4), 6),
934 .urb = {
935 .size = 768,
936 GEN11_URB_MIN_MAX_ENTRIES,
937 },
938 .simulator_id = 19,
939 };
940
941 static const struct gen_device_info gen_device_info_icl_1x8 = {
942 GEN11_FEATURES(1, 1, subslices(1), 6),
943 .urb = {
944 .size = 768,
945 GEN11_URB_MIN_MAX_ENTRIES,
946 },
947 .simulator_id = 19,
948 };
949
950 static const struct gen_device_info gen_device_info_ehl_4x8 = {
951 GEN11_FEATURES(1, 1, subslices(4), 4),
952 .is_elkhartlake = true,
953 .urb = {
954 .size = 512,
955 .min_entries = {
956 [MESA_SHADER_VERTEX] = 64,
957 [MESA_SHADER_TESS_EVAL] = 34,
958 },
959 .max_entries = {
960 [MESA_SHADER_VERTEX] = 2384,
961 [MESA_SHADER_TESS_CTRL] = 1032,
962 [MESA_SHADER_TESS_EVAL] = 2384,
963 [MESA_SHADER_GEOMETRY] = 1032,
964 },
965 },
966 .disable_ccs_repack = true,
967 .simulator_id = 28,
968 };
969
970 /* FIXME: Verfiy below entries when more information is available for this SKU.
971 */
972 static const struct gen_device_info gen_device_info_ehl_4x4 = {
973 GEN11_FEATURES(1, 1, subslices(4), 4),
974 .is_elkhartlake = true,
975 .urb = {
976 .size = 512,
977 .min_entries = {
978 [MESA_SHADER_VERTEX] = 64,
979 [MESA_SHADER_TESS_EVAL] = 34,
980 },
981 .max_entries = {
982 [MESA_SHADER_VERTEX] = 2384,
983 [MESA_SHADER_TESS_CTRL] = 1032,
984 [MESA_SHADER_TESS_EVAL] = 2384,
985 [MESA_SHADER_GEOMETRY] = 1032,
986 },
987 },
988 .disable_ccs_repack = true,
989 .num_eu_per_subslice = 4,
990 .simulator_id = 28,
991 };
992
993 /* FIXME: Verfiy below entries when more information is available for this SKU.
994 */
995 static const struct gen_device_info gen_device_info_ehl_2x4 = {
996 GEN11_FEATURES(1, 1, subslices(2), 4),
997 .is_elkhartlake = true,
998 .urb = {
999 .size = 512,
1000 .min_entries = {
1001 [MESA_SHADER_VERTEX] = 64,
1002 [MESA_SHADER_TESS_EVAL] = 34,
1003 },
1004 .max_entries = {
1005 [MESA_SHADER_VERTEX] = 2384,
1006 [MESA_SHADER_TESS_CTRL] = 1032,
1007 [MESA_SHADER_TESS_EVAL] = 2384,
1008 [MESA_SHADER_GEOMETRY] = 1032,
1009 },
1010 },
1011 .disable_ccs_repack = true,
1012 .num_eu_per_subslice =4,
1013 .simulator_id = 28,
1014 };
1015
1016 #define GEN12_URB_MIN_MAX_ENTRIES \
1017 .min_entries = { \
1018 [MESA_SHADER_VERTEX] = 64, \
1019 [MESA_SHADER_TESS_EVAL] = 34, \
1020 }, \
1021 .max_entries = { \
1022 [MESA_SHADER_VERTEX] = 3576, \
1023 [MESA_SHADER_TESS_CTRL] = 1548, \
1024 [MESA_SHADER_TESS_EVAL] = 3576, \
1025 [MESA_SHADER_GEOMETRY] = 1548, \
1026 }
1027
1028 #define GEN12_HW_INFO \
1029 .gen = 12, \
1030 .has_pln = false, \
1031 .has_sample_with_hiz = false, \
1032 .has_aux_map = true, \
1033 .max_vs_threads = 546, \
1034 .max_gs_threads = 336, \
1035 .max_tcs_threads = 336, \
1036 .max_tes_threads = 546, \
1037 .max_cs_threads = 112, /* threads per DSS */ \
1038 .urb = { \
1039 GEN12_URB_MIN_MAX_ENTRIES, \
1040 }
1041
1042 #define GEN12_FEATURES(_gt, _slices, _dual_subslices, _l3) \
1043 GEN8_FEATURES, \
1044 GEN12_HW_INFO, \
1045 .has_64bit_types = false, \
1046 .has_integer_dword_mul = false, \
1047 .gt = _gt, .num_slices = _slices, .l3_banks = _l3, \
1048 .simulator_id = 22, \
1049 .urb.size = (_gt) == 1 ? 512 : 1024, \
1050 .num_subslices = _dual_subslices, \
1051 .num_eu_per_subslice = 16
1052
1053 #define dual_subslices(args...) { args, }
1054
1055 static const struct gen_device_info gen_device_info_tgl_1x2x16 = {
1056 GEN12_FEATURES(1, 1, dual_subslices(2), 8),
1057 };
1058
1059 static const struct gen_device_info gen_device_info_tgl_1x6x16 = {
1060 GEN12_FEATURES(2, 1, dual_subslices(6), 8),
1061 };
1062
1063 static void
1064 gen_device_info_set_eu_mask(struct gen_device_info *devinfo,
1065 unsigned slice,
1066 unsigned subslice,
1067 unsigned eu_mask)
1068 {
1069 unsigned subslice_offset = slice * devinfo->eu_slice_stride +
1070 subslice * devinfo->eu_subslice_stride;
1071
1072 for (unsigned b_eu = 0; b_eu < devinfo->eu_subslice_stride; b_eu++) {
1073 devinfo->eu_masks[subslice_offset + b_eu] =
1074 (((1U << devinfo->num_eu_per_subslice) - 1) >> (b_eu * 8)) & 0xff;
1075 }
1076 }
1077
1078 /* Generate slice/subslice/eu masks from number of
1079 * slices/subslices/eu_per_subslices in the per generation/gt gen_device_info
1080 * structure.
1081 *
1082 * These can be overridden with values reported by the kernel either from
1083 * getparam SLICE_MASK/SUBSLICE_MASK values or from the kernel version 4.17+
1084 * through the i915 query uapi.
1085 */
1086 static void
1087 fill_masks(struct gen_device_info *devinfo)
1088 {
1089 devinfo->slice_masks = (1U << devinfo->num_slices) - 1;
1090
1091 /* Subslice masks */
1092 unsigned max_subslices = 0;
1093 for (int s = 0; s < devinfo->num_slices; s++)
1094 max_subslices = MAX2(devinfo->num_subslices[s], max_subslices);
1095 devinfo->subslice_slice_stride = DIV_ROUND_UP(max_subslices, 8);
1096
1097 for (int s = 0; s < devinfo->num_slices; s++) {
1098 devinfo->subslice_masks[s * devinfo->subslice_slice_stride] =
1099 (1U << devinfo->num_subslices[s]) - 1;
1100 }
1101
1102 /* EU masks */
1103 devinfo->eu_subslice_stride = DIV_ROUND_UP(devinfo->num_eu_per_subslice, 8);
1104 devinfo->eu_slice_stride = max_subslices * devinfo->eu_subslice_stride;
1105
1106 for (int s = 0; s < devinfo->num_slices; s++) {
1107 for (int ss = 0; ss < devinfo->num_subslices[s]; ss++) {
1108 gen_device_info_set_eu_mask(devinfo, s, ss,
1109 (1U << devinfo->num_eu_per_subslice) - 1);
1110 }
1111 }
1112 }
1113
1114 static void
1115 reset_masks(struct gen_device_info *devinfo)
1116 {
1117 devinfo->subslice_slice_stride = 0;
1118 devinfo->eu_subslice_stride = 0;
1119 devinfo->eu_slice_stride = 0;
1120
1121 devinfo->num_slices = 0;
1122 devinfo->num_eu_per_subslice = 0;
1123 memset(devinfo->num_subslices, 0, sizeof(devinfo->num_subslices));
1124
1125 memset(&devinfo->slice_masks, 0, sizeof(devinfo->slice_masks));
1126 memset(devinfo->subslice_masks, 0, sizeof(devinfo->subslice_masks));
1127 memset(devinfo->eu_masks, 0, sizeof(devinfo->eu_masks));
1128 memset(devinfo->ppipe_subslices, 0, sizeof(devinfo->ppipe_subslices));
1129 }
1130
1131 static void
1132 update_from_topology(struct gen_device_info *devinfo,
1133 const struct drm_i915_query_topology_info *topology)
1134 {
1135 reset_masks(devinfo);
1136
1137 devinfo->subslice_slice_stride = topology->subslice_stride;
1138
1139 devinfo->eu_subslice_stride = DIV_ROUND_UP(topology->max_eus_per_subslice, 8);
1140 devinfo->eu_slice_stride = topology->max_subslices * devinfo->eu_subslice_stride;
1141
1142 assert(sizeof(devinfo->slice_masks) >= DIV_ROUND_UP(topology->max_slices, 8));
1143 memcpy(&devinfo->slice_masks, topology->data, DIV_ROUND_UP(topology->max_slices, 8));
1144 devinfo->num_slices = __builtin_popcount(devinfo->slice_masks);
1145
1146 uint32_t subslice_mask_len =
1147 topology->max_slices * topology->subslice_stride;
1148 assert(sizeof(devinfo->subslice_masks) >= subslice_mask_len);
1149 memcpy(devinfo->subslice_masks, &topology->data[topology->subslice_offset],
1150 subslice_mask_len);
1151
1152 uint32_t n_subslices = 0;
1153 for (int s = 0; s < topology->max_slices; s++) {
1154 if ((devinfo->slice_masks & (1 << s)) == 0)
1155 continue;
1156
1157 for (int b = 0; b < devinfo->subslice_slice_stride; b++) {
1158 devinfo->num_subslices[s] +=
1159 __builtin_popcount(devinfo->subslice_masks[s * devinfo->subslice_slice_stride + b]);
1160 }
1161 n_subslices += devinfo->num_subslices[s];
1162 }
1163 assert(n_subslices > 0);
1164
1165 if (devinfo->gen == 11) {
1166 /* On ICL we only have one slice */
1167 assert(devinfo->slice_masks == 1);
1168
1169 /* Count the number of subslices on each pixel pipe. Assume that
1170 * subslices 0-3 are on pixel pipe 0, and 4-7 are on pixel pipe 1.
1171 */
1172 unsigned subslices = devinfo->subslice_masks[0];
1173 unsigned ss = 0;
1174 while (subslices > 0) {
1175 if (subslices & 1)
1176 devinfo->ppipe_subslices[ss >= 4 ? 1 : 0] += 1;
1177 subslices >>= 1;
1178 ss++;
1179 }
1180 }
1181
1182 uint32_t eu_mask_len =
1183 topology->eu_stride * topology->max_subslices * topology->max_slices;
1184 assert(sizeof(devinfo->eu_masks) >= eu_mask_len);
1185 memcpy(devinfo->eu_masks, &topology->data[topology->eu_offset], eu_mask_len);
1186
1187 uint32_t n_eus = 0;
1188 for (int b = 0; b < eu_mask_len; b++)
1189 n_eus += __builtin_popcount(devinfo->eu_masks[b]);
1190
1191 devinfo->num_eu_per_subslice = DIV_ROUND_UP(n_eus, n_subslices);
1192 }
1193
1194 static bool
1195 update_from_masks(struct gen_device_info *devinfo, uint32_t slice_mask,
1196 uint32_t subslice_mask, uint32_t n_eus)
1197 {
1198 struct drm_i915_query_topology_info *topology;
1199
1200 assert((slice_mask & 0xff) == slice_mask);
1201
1202 size_t data_length = 100;
1203
1204 topology = calloc(1, sizeof(*topology) + data_length);
1205 if (!topology)
1206 return false;
1207
1208 topology->max_slices = util_last_bit(slice_mask);
1209 topology->max_subslices = util_last_bit(subslice_mask);
1210
1211 topology->subslice_offset = DIV_ROUND_UP(topology->max_slices, 8);
1212 topology->subslice_stride = DIV_ROUND_UP(topology->max_subslices, 8);
1213
1214 uint32_t n_subslices = __builtin_popcount(slice_mask) *
1215 __builtin_popcount(subslice_mask);
1216 uint32_t num_eu_per_subslice = DIV_ROUND_UP(n_eus, n_subslices);
1217 uint32_t eu_mask = (1U << num_eu_per_subslice) - 1;
1218
1219 topology->eu_offset = topology->subslice_offset +
1220 DIV_ROUND_UP(topology->max_subslices, 8);
1221 topology->eu_stride = DIV_ROUND_UP(num_eu_per_subslice, 8);
1222
1223 /* Set slice mask in topology */
1224 for (int b = 0; b < topology->subslice_offset; b++)
1225 topology->data[b] = (slice_mask >> (b * 8)) & 0xff;
1226
1227 for (int s = 0; s < topology->max_slices; s++) {
1228
1229 /* Set subslice mask in topology */
1230 for (int b = 0; b < topology->subslice_stride; b++) {
1231 int subslice_offset = topology->subslice_offset +
1232 s * topology->subslice_stride + b;
1233
1234 topology->data[subslice_offset] = (subslice_mask >> (b * 8)) & 0xff;
1235 }
1236
1237 /* Set eu mask in topology */
1238 for (int ss = 0; ss < topology->max_subslices; ss++) {
1239 for (int b = 0; b < topology->eu_stride; b++) {
1240 int eu_offset = topology->eu_offset +
1241 (s * topology->max_subslices + ss) * topology->eu_stride + b;
1242
1243 topology->data[eu_offset] = (eu_mask >> (b * 8)) & 0xff;
1244 }
1245 }
1246 }
1247
1248 update_from_topology(devinfo, topology);
1249 free(topology);
1250
1251 return true;
1252 }
1253
1254 static bool
1255 getparam(int fd, uint32_t param, int *value)
1256 {
1257 int tmp;
1258
1259 struct drm_i915_getparam gp = {
1260 .param = param,
1261 .value = &tmp,
1262 };
1263
1264 int ret = gen_ioctl(fd, DRM_IOCTL_I915_GETPARAM, &gp);
1265 if (ret != 0)
1266 return false;
1267
1268 *value = tmp;
1269 return true;
1270 }
1271
1272 bool
1273 gen_get_device_info_from_pci_id(int pci_id,
1274 struct gen_device_info *devinfo)
1275 {
1276 switch (pci_id) {
1277 #undef CHIPSET
1278 #define CHIPSET(id, family, name) \
1279 case id: *devinfo = gen_device_info_##family; break;
1280 #include "pci_ids/i965_pci_ids.h"
1281 #include "pci_ids/iris_pci_ids.h"
1282 default:
1283 fprintf(stderr, "Driver does not support the 0x%x PCI ID.\n", pci_id);
1284 return false;
1285 }
1286
1287 fill_masks(devinfo);
1288
1289 /* From the Skylake PRM, 3DSTATE_PS::Scratch Space Base Pointer:
1290 *
1291 * "Scratch Space per slice is computed based on 4 sub-slices. SW must
1292 * allocate scratch space enough so that each slice has 4 slices allowed."
1293 *
1294 * The equivalent internal documentation says that this programming note
1295 * applies to all Gen9+ platforms.
1296 *
1297 * The hardware typically calculates the scratch space pointer by taking
1298 * the base address, and adding per-thread-scratch-space * thread ID.
1299 * Extra padding can be necessary depending how the thread IDs are
1300 * calculated for a particular shader stage.
1301 */
1302
1303 switch(devinfo->gen) {
1304 case 9:
1305 case 10:
1306 devinfo->max_wm_threads = 64 /* threads-per-PSD */
1307 * devinfo->num_slices
1308 * 4; /* effective subslices per slice */
1309 break;
1310 case 11:
1311 case 12:
1312 devinfo->max_wm_threads = 128 /* threads-per-PSD */
1313 * devinfo->num_slices
1314 * 8; /* subslices per slice */
1315 break;
1316 default:
1317 assert(devinfo->gen < 9);
1318 break;
1319 }
1320
1321 assert(devinfo->num_slices <= ARRAY_SIZE(devinfo->num_subslices));
1322
1323 devinfo->chipset_id = pci_id;
1324 return true;
1325 }
1326
1327 const char *
1328 gen_get_device_name(int devid)
1329 {
1330 switch (devid) {
1331 #undef CHIPSET
1332 #define CHIPSET(id, family, name) case id: return name;
1333 #include "pci_ids/i965_pci_ids.h"
1334 #include "pci_ids/iris_pci_ids.h"
1335 default:
1336 return NULL;
1337 }
1338 }
1339
1340 /**
1341 * for gen8/gen9, SLICE_MASK/SUBSLICE_MASK can be used to compute the topology
1342 * (kernel 4.13+)
1343 */
1344 static bool
1345 getparam_topology(struct gen_device_info *devinfo, int fd)
1346 {
1347 int slice_mask = 0;
1348 if (!getparam(fd, I915_PARAM_SLICE_MASK, &slice_mask))
1349 return false;
1350
1351 int n_eus;
1352 if (!getparam(fd, I915_PARAM_EU_TOTAL, &n_eus))
1353 return false;
1354
1355 int subslice_mask = 0;
1356 if (!getparam(fd, I915_PARAM_SUBSLICE_MASK, &subslice_mask))
1357 return false;
1358
1359 return update_from_masks(devinfo, slice_mask, subslice_mask, n_eus);
1360 }
1361
1362 /**
1363 * preferred API for updating the topology in devinfo (kernel 4.17+)
1364 */
1365 static bool
1366 query_topology(struct gen_device_info *devinfo, int fd)
1367 {
1368 struct drm_i915_query_item item = {
1369 .query_id = DRM_I915_QUERY_TOPOLOGY_INFO,
1370 };
1371 struct drm_i915_query query = {
1372 .num_items = 1,
1373 .items_ptr = (uintptr_t) &item,
1374 };
1375
1376 if (gen_ioctl(fd, DRM_IOCTL_I915_QUERY, &query))
1377 return false;
1378
1379 if (item.length < 0)
1380 return false;
1381
1382 struct drm_i915_query_topology_info *topo_info =
1383 (struct drm_i915_query_topology_info *) calloc(1, item.length);
1384 item.data_ptr = (uintptr_t) topo_info;
1385
1386 if (gen_ioctl(fd, DRM_IOCTL_I915_QUERY, &query) ||
1387 item.length <= 0)
1388 return false;
1389
1390 update_from_topology(devinfo, topo_info);
1391
1392 free(topo_info);
1393
1394 return true;
1395
1396 }
1397
1398 bool
1399 gen_get_device_info_from_fd(int fd, struct gen_device_info *devinfo)
1400 {
1401 int devid = get_pci_device_id_override();
1402 if (devid > 0) {
1403 if (!gen_get_device_info_from_pci_id(devid, devinfo))
1404 return false;
1405 devinfo->no_hw = true;
1406 } else {
1407 /* query the device id */
1408 if (!getparam(fd, I915_PARAM_CHIPSET_ID, &devid))
1409 return false;
1410 if (!gen_get_device_info_from_pci_id(devid, devinfo))
1411 return false;
1412 devinfo->no_hw = false;
1413 }
1414
1415 /* remaining initializion queries the kernel for device info */
1416 if (devinfo->no_hw)
1417 return true;
1418
1419 int timestamp_frequency;
1420 if (getparam(fd, I915_PARAM_CS_TIMESTAMP_FREQUENCY,
1421 &timestamp_frequency))
1422 devinfo->timestamp_frequency = timestamp_frequency;
1423 else if (devinfo->gen >= 10)
1424 /* gen10 and later requires the timestamp_frequency to be updated */
1425 return false;
1426
1427 if (!getparam(fd, I915_PARAM_REVISION, &devinfo->revision))
1428 return false;
1429
1430 if (!query_topology(devinfo, fd)) {
1431 if (devinfo->gen >= 10) {
1432 /* topology uAPI required for CNL+ (kernel 4.17+) */
1433 return false;
1434 }
1435
1436 /* else use the kernel 4.13+ api for gen8+. For older kernels, topology
1437 * will be wrong, affecting GPU metrics. In this case, fail silently.
1438 */
1439 getparam_topology(devinfo, fd);
1440 }
1441
1442 return true;
1443 }