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1// SPDX-License-Identifier: MIT
2
3/*
4 * Copyright © 2019 Intel Corporation
5 */
6
7#include <linux/seq_file.h>
8#include <linux/string_helpers.h>
9
10#include "i915_drv.h"
11#include "i915_reg.h"
12#include "intel_gt.h"
13#include "intel_gt_clock_utils.h"
14#include "intel_gt_debugfs.h"
15#include "intel_gt_pm.h"
16#include "intel_gt_pm_debugfs.h"
17#include "intel_gt_regs.h"
18#include "intel_llc.h"
19#include "intel_mchbar_regs.h"
20#include "intel_pcode.h"
21#include "intel_rc6.h"
22#include "intel_rps.h"
23#include "intel_runtime_pm.h"
24#include "intel_uncore.h"
25#include "vlv_sideband.h"
26
27void intel_gt_pm_debugfs_forcewake_user_open(struct intel_gt *gt)
28{
29 atomic_inc(>->user_wakeref);
30 intel_gt_pm_get_untracked(gt);
31 if (GRAPHICS_VER(gt->i915) >= 6)
32 intel_uncore_forcewake_user_get(gt->uncore);
33}
34
35void intel_gt_pm_debugfs_forcewake_user_release(struct intel_gt *gt)
36{
37 if (GRAPHICS_VER(gt->i915) >= 6)
38 intel_uncore_forcewake_user_put(gt->uncore);
39 intel_gt_pm_put_untracked(gt);
40 atomic_dec(>->user_wakeref);
41}
42
43static int forcewake_user_open(struct inode *inode, struct file *file)
44{
45 struct intel_gt *gt = inode->i_private;
46
47 intel_gt_pm_debugfs_forcewake_user_open(gt);
48
49 return 0;
50}
51
52static int forcewake_user_release(struct inode *inode, struct file *file)
53{
54 struct intel_gt *gt = inode->i_private;
55
56 intel_gt_pm_debugfs_forcewake_user_release(gt);
57
58 return 0;
59}
60
61static const struct file_operations forcewake_user_fops = {
62 .owner = THIS_MODULE,
63 .open = forcewake_user_open,
64 .release = forcewake_user_release,
65};
66
67static int fw_domains_show(struct seq_file *m, void *data)
68{
69 struct intel_gt *gt = m->private;
70 struct intel_uncore *uncore = gt->uncore;
71 struct intel_uncore_forcewake_domain *fw_domain;
72 unsigned int tmp;
73
74 spin_lock_irq(&uncore->lock);
75
76 seq_printf(m, "user.bypass_count = %u\n",
77 uncore->user_forcewake_count);
78
79 for_each_fw_domain(fw_domain, uncore, tmp)
80 seq_printf(m, "%s.wake_count = %u\n",
81 intel_uncore_forcewake_domain_to_str(fw_domain->id),
82 READ_ONCE(fw_domain->wake_count));
83
84 spin_unlock_irq(&uncore->lock);
85
86 return 0;
87}
88DEFINE_INTEL_GT_DEBUGFS_ATTRIBUTE(fw_domains);
89
90static int vlv_drpc(struct seq_file *m)
91{
92 struct intel_gt *gt = m->private;
93 struct intel_uncore *uncore = gt->uncore;
94 u32 rcctl1, pw_status, mt_fwake_req;
95
96 mt_fwake_req = intel_uncore_read_fw(uncore, FORCEWAKE_MT);
97 pw_status = intel_uncore_read(uncore, VLV_GTLC_PW_STATUS);
98 rcctl1 = intel_uncore_read(uncore, GEN6_RC_CONTROL);
99
100 seq_printf(m, "RC6 Enabled: %s\n",
101 str_yes_no(rcctl1 & (GEN7_RC_CTL_TO_MODE |
102 GEN6_RC_CTL_EI_MODE(1))));
103 seq_printf(m, "Multi-threaded Forcewake Request: 0x%x\n", mt_fwake_req);
104 seq_printf(m, "Render Power Well: %s\n",
105 (pw_status & VLV_GTLC_PW_RENDER_STATUS_MASK) ? "Up" : "Down");
106 seq_printf(m, "Media Power Well: %s\n",
107 (pw_status & VLV_GTLC_PW_MEDIA_STATUS_MASK) ? "Up" : "Down");
108
109 intel_rc6_print_residency(m, "Render RC6 residency since boot:", INTEL_RC6_RES_RC6);
110 intel_rc6_print_residency(m, "Media RC6 residency since boot:", INTEL_RC6_RES_VLV_MEDIA);
111
112 return fw_domains_show(m, NULL);
113}
114
115static int gen6_drpc(struct seq_file *m)
116{
117 struct intel_gt *gt = m->private;
118 struct drm_i915_private *i915 = gt->i915;
119 struct intel_uncore *uncore = gt->uncore;
120 u32 gt_core_status, mt_fwake_req, rcctl1, rc6vids = 0;
121 u32 gen9_powergate_enable = 0, gen9_powergate_status = 0;
122
123 mt_fwake_req = intel_uncore_read_fw(uncore, FORCEWAKE_MT);
124 gt_core_status = intel_uncore_read_fw(uncore, GEN6_GT_CORE_STATUS);
125
126 rcctl1 = intel_uncore_read(uncore, GEN6_RC_CONTROL);
127 if (GRAPHICS_VER(i915) >= 9) {
128 gen9_powergate_enable =
129 intel_uncore_read(uncore, GEN9_PG_ENABLE);
130 gen9_powergate_status =
131 intel_uncore_read(uncore, GEN9_PWRGT_DOMAIN_STATUS);
132 }
133
134 if (GRAPHICS_VER(i915) <= 7)
135 snb_pcode_read(gt->uncore, GEN6_PCODE_READ_RC6VIDS, &rc6vids, NULL);
136
137 seq_printf(m, "RC1e Enabled: %s\n",
138 str_yes_no(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
139 seq_printf(m, "RC6 Enabled: %s\n",
140 str_yes_no(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
141 if (GRAPHICS_VER(i915) >= 9) {
142 seq_printf(m, "Render Well Gating Enabled: %s\n",
143 str_yes_no(gen9_powergate_enable & GEN9_RENDER_PG_ENABLE));
144 seq_printf(m, "Media Well Gating Enabled: %s\n",
145 str_yes_no(gen9_powergate_enable & GEN9_MEDIA_PG_ENABLE));
146 }
147 seq_printf(m, "Deep RC6 Enabled: %s\n",
148 str_yes_no(rcctl1 & GEN6_RC_CTL_RC6p_ENABLE));
149 seq_printf(m, "Deepest RC6 Enabled: %s\n",
150 str_yes_no(rcctl1 & GEN6_RC_CTL_RC6pp_ENABLE));
151 seq_puts(m, "Current RC state: ");
152 switch (gt_core_status & GEN6_RCn_MASK) {
153 case GEN6_RC0:
154 if (gt_core_status & GEN6_CORE_CPD_STATE_MASK)
155 seq_puts(m, "Core Power Down\n");
156 else
157 seq_puts(m, "on\n");
158 break;
159 case GEN6_RC3:
160 seq_puts(m, "RC3\n");
161 break;
162 case GEN6_RC6:
163 seq_puts(m, "RC6\n");
164 break;
165 case GEN6_RC7:
166 seq_puts(m, "RC7\n");
167 break;
168 default:
169 seq_puts(m, "Unknown\n");
170 break;
171 }
172
173 seq_printf(m, "Core Power Down: %s\n",
174 str_yes_no(gt_core_status & GEN6_CORE_CPD_STATE_MASK));
175 seq_printf(m, "Multi-threaded Forcewake Request: 0x%x\n", mt_fwake_req);
176 if (GRAPHICS_VER(i915) >= 9) {
177 seq_printf(m, "Render Power Well: %s\n",
178 (gen9_powergate_status &
179 GEN9_PWRGT_RENDER_STATUS_MASK) ? "Up" : "Down");
180 seq_printf(m, "Media Power Well: %s\n",
181 (gen9_powergate_status &
182 GEN9_PWRGT_MEDIA_STATUS_MASK) ? "Up" : "Down");
183 }
184
185 /* Not exactly sure what this is */
186 intel_rc6_print_residency(m, "RC6 \"Locked to RPn\" residency since boot:",
187 INTEL_RC6_RES_RC6_LOCKED);
188 intel_rc6_print_residency(m, "RC6 residency since boot:", INTEL_RC6_RES_RC6);
189 intel_rc6_print_residency(m, "RC6+ residency since boot:", INTEL_RC6_RES_RC6p);
190 intel_rc6_print_residency(m, "RC6++ residency since boot:", INTEL_RC6_RES_RC6pp);
191
192 if (GRAPHICS_VER(i915) <= 7) {
193 seq_printf(m, "RC6 voltage: %dmV\n",
194 GEN6_DECODE_RC6_VID(((rc6vids >> 0) & 0xff)));
195 seq_printf(m, "RC6+ voltage: %dmV\n",
196 GEN6_DECODE_RC6_VID(((rc6vids >> 8) & 0xff)));
197 seq_printf(m, "RC6++ voltage: %dmV\n",
198 GEN6_DECODE_RC6_VID(((rc6vids >> 16) & 0xff)));
199 }
200
201 return fw_domains_show(m, NULL);
202}
203
204static int ilk_drpc(struct seq_file *m)
205{
206 struct intel_gt *gt = m->private;
207 struct intel_uncore *uncore = gt->uncore;
208 u32 rgvmodectl, rstdbyctl;
209 u16 crstandvid;
210
211 rgvmodectl = intel_uncore_read(uncore, MEMMODECTL);
212 rstdbyctl = intel_uncore_read(uncore, RSTDBYCTL);
213 crstandvid = intel_uncore_read16(uncore, CRSTANDVID);
214
215 seq_printf(m, "HD boost: %s\n",
216 str_yes_no(rgvmodectl & MEMMODE_BOOST_EN));
217 seq_printf(m, "Boost freq: %d\n",
218 (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
219 MEMMODE_BOOST_FREQ_SHIFT);
220 seq_printf(m, "HW control enabled: %s\n",
221 str_yes_no(rgvmodectl & MEMMODE_HWIDLE_EN));
222 seq_printf(m, "SW control enabled: %s\n",
223 str_yes_no(rgvmodectl & MEMMODE_SWMODE_EN));
224 seq_printf(m, "Gated voltage change: %s\n",
225 str_yes_no(rgvmodectl & MEMMODE_RCLK_GATE));
226 seq_printf(m, "Starting frequency: P%d\n",
227 (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
228 seq_printf(m, "Max P-state: P%d\n",
229 (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
230 seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
231 seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
232 seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
233 seq_printf(m, "Render standby enabled: %s\n",
234 str_yes_no(!(rstdbyctl & RCX_SW_EXIT)));
235 seq_puts(m, "Current RS state: ");
236 switch (rstdbyctl & RSX_STATUS_MASK) {
237 case RSX_STATUS_ON:
238 seq_puts(m, "on\n");
239 break;
240 case RSX_STATUS_RC1:
241 seq_puts(m, "RC1\n");
242 break;
243 case RSX_STATUS_RC1E:
244 seq_puts(m, "RC1E\n");
245 break;
246 case RSX_STATUS_RS1:
247 seq_puts(m, "RS1\n");
248 break;
249 case RSX_STATUS_RS2:
250 seq_puts(m, "RS2 (RC6)\n");
251 break;
252 case RSX_STATUS_RS3:
253 seq_puts(m, "RC3 (RC6+)\n");
254 break;
255 default:
256 seq_puts(m, "unknown\n");
257 break;
258 }
259
260 return 0;
261}
262
263static int mtl_drpc(struct seq_file *m)
264{
265 struct intel_gt *gt = m->private;
266 struct intel_uncore *uncore = gt->uncore;
267 u32 gt_core_status, rcctl1, mt_fwake_req;
268 u32 mtl_powergate_enable = 0, mtl_powergate_status = 0;
269
270 mt_fwake_req = intel_uncore_read_fw(uncore, FORCEWAKE_MT);
271 gt_core_status = intel_uncore_read(uncore, MTL_MIRROR_TARGET_WP1);
272
273 rcctl1 = intel_uncore_read(uncore, GEN6_RC_CONTROL);
274 mtl_powergate_enable = intel_uncore_read(uncore, GEN9_PG_ENABLE);
275 mtl_powergate_status = intel_uncore_read(uncore,
276 GEN9_PWRGT_DOMAIN_STATUS);
277
278 seq_printf(m, "RC6 Enabled: %s\n",
279 str_yes_no(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
280 if (gt->type == GT_MEDIA) {
281 seq_printf(m, "Media Well Gating Enabled: %s\n",
282 str_yes_no(mtl_powergate_enable & GEN9_MEDIA_PG_ENABLE));
283 } else {
284 seq_printf(m, "Render Well Gating Enabled: %s\n",
285 str_yes_no(mtl_powergate_enable & GEN9_RENDER_PG_ENABLE));
286 }
287
288 seq_puts(m, "Current RC state: ");
289 switch (REG_FIELD_GET(MTL_CC_MASK, gt_core_status)) {
290 case MTL_CC0:
291 seq_puts(m, "RC0\n");
292 break;
293 case MTL_CC6:
294 seq_puts(m, "RC6\n");
295 break;
296 default:
297 seq_puts(m, "Unknown\n");
298 break;
299 }
300
301 seq_printf(m, "Multi-threaded Forcewake Request: 0x%x\n", mt_fwake_req);
302 if (gt->type == GT_MEDIA)
303 seq_printf(m, "Media Power Well: %s\n",
304 (mtl_powergate_status &
305 GEN9_PWRGT_MEDIA_STATUS_MASK) ? "Up" : "Down");
306 else
307 seq_printf(m, "Render Power Well: %s\n",
308 (mtl_powergate_status &
309 GEN9_PWRGT_RENDER_STATUS_MASK) ? "Up" : "Down");
310
311 /* Works for both render and media gt's */
312 intel_rc6_print_residency(m, "RC6 residency since boot:", INTEL_RC6_RES_RC6);
313
314 return fw_domains_show(m, NULL);
315}
316
317static int drpc_show(struct seq_file *m, void *unused)
318{
319 struct intel_gt *gt = m->private;
320 struct drm_i915_private *i915 = gt->i915;
321 intel_wakeref_t wakeref;
322 int err = -ENODEV;
323
324 with_intel_runtime_pm(gt->uncore->rpm, wakeref) {
325 if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 70))
326 err = mtl_drpc(m);
327 else if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915))
328 err = vlv_drpc(m);
329 else if (GRAPHICS_VER(i915) >= 6)
330 err = gen6_drpc(m);
331 else
332 err = ilk_drpc(m);
333 }
334
335 return err;
336}
337DEFINE_INTEL_GT_DEBUGFS_ATTRIBUTE(drpc);
338
339void intel_gt_pm_frequency_dump(struct intel_gt *gt, struct drm_printer *p)
340{
341 struct drm_i915_private *i915 = gt->i915;
342 struct intel_uncore *uncore = gt->uncore;
343 struct intel_rps *rps = >->rps;
344 intel_wakeref_t wakeref;
345
346 wakeref = intel_runtime_pm_get(uncore->rpm);
347
348 if (GRAPHICS_VER(i915) == 5) {
349 u16 rgvswctl = intel_uncore_read16(uncore, MEMSWCTL);
350 u16 rgvstat = intel_uncore_read16(uncore, MEMSTAT_ILK);
351
352 drm_printf(p, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
353 drm_printf(p, "Requested VID: %d\n", rgvswctl & 0x3f);
354 drm_printf(p, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
355 MEMSTAT_VID_SHIFT);
356 drm_printf(p, "Current P-state: %d\n",
357 REG_FIELD_GET(MEMSTAT_PSTATE_MASK, rgvstat));
358 } else if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915)) {
359 u32 rpmodectl, freq_sts;
360
361 rpmodectl = intel_uncore_read(uncore, GEN6_RP_CONTROL);
362 drm_printf(p, "Video Turbo Mode: %s\n",
363 str_yes_no(rpmodectl & GEN6_RP_MEDIA_TURBO));
364 drm_printf(p, "HW control enabled: %s\n",
365 str_yes_no(rpmodectl & GEN6_RP_ENABLE));
366 drm_printf(p, "SW control enabled: %s\n",
367 str_yes_no((rpmodectl & GEN6_RP_MEDIA_MODE_MASK) == GEN6_RP_MEDIA_SW_MODE));
368
369 vlv_punit_get(i915);
370 freq_sts = vlv_punit_read(i915, PUNIT_REG_GPU_FREQ_STS);
371 vlv_punit_put(i915);
372
373 drm_printf(p, "PUNIT_REG_GPU_FREQ_STS: 0x%08x\n", freq_sts);
374
375 drm_printf(p, "actual GPU freq: %d MHz\n",
376 intel_gpu_freq(rps, (freq_sts >> 8) & 0xff));
377
378 drm_printf(p, "current GPU freq: %d MHz\n",
379 intel_gpu_freq(rps, rps->cur_freq));
380
381 drm_printf(p, "max GPU freq: %d MHz\n",
382 intel_gpu_freq(rps, rps->max_freq));
383
384 drm_printf(p, "min GPU freq: %d MHz\n",
385 intel_gpu_freq(rps, rps->min_freq));
386
387 drm_printf(p, "idle GPU freq: %d MHz\n",
388 intel_gpu_freq(rps, rps->idle_freq));
389
390 drm_printf(p, "efficient (RPe) frequency: %d MHz\n",
391 intel_gpu_freq(rps, rps->efficient_freq));
392 } else if (GRAPHICS_VER(i915) >= 6) {
393 gen6_rps_frequency_dump(rps, p);
394 } else {
395 drm_puts(p, "no P-state info available\n");
396 }
397
398 intel_runtime_pm_put(uncore->rpm, wakeref);
399}
400
401static int frequency_show(struct seq_file *m, void *unused)
402{
403 struct intel_gt *gt = m->private;
404 struct drm_printer p = drm_seq_file_printer(m);
405
406 intel_gt_pm_frequency_dump(gt, &p);
407
408 return 0;
409}
410DEFINE_INTEL_GT_DEBUGFS_ATTRIBUTE(frequency);
411
412static int llc_show(struct seq_file *m, void *data)
413{
414 struct intel_gt *gt = m->private;
415 struct drm_i915_private *i915 = gt->i915;
416 const bool edram = GRAPHICS_VER(i915) > 8;
417 struct intel_rps *rps = >->rps;
418 unsigned int max_gpu_freq, min_gpu_freq;
419 intel_wakeref_t wakeref;
420 int gpu_freq, ia_freq;
421
422 seq_printf(m, "LLC: %s\n", str_yes_no(HAS_LLC(i915)));
423 seq_printf(m, "%s: %uMB\n", edram ? "eDRAM" : "eLLC",
424 i915->edram_size_mb);
425
426 min_gpu_freq = rps->min_freq;
427 max_gpu_freq = rps->max_freq;
428 if (IS_GEN9_BC(i915) || GRAPHICS_VER(i915) >= 11) {
429 /* Convert GT frequency to 50 HZ units */
430 min_gpu_freq /= GEN9_FREQ_SCALER;
431 max_gpu_freq /= GEN9_FREQ_SCALER;
432 }
433
434 seq_puts(m, "GPU freq (MHz)\tEffective GPU freq (MHz)\tEffective Ring freq (MHz)\n");
435
436 wakeref = intel_runtime_pm_get(gt->uncore->rpm);
437 for (gpu_freq = min_gpu_freq; gpu_freq <= max_gpu_freq; gpu_freq++) {
438 ia_freq = gpu_freq;
439 snb_pcode_read(gt->uncore, GEN6_PCODE_READ_MIN_FREQ_TABLE,
440 &ia_freq, NULL);
441 seq_printf(m, "%d\t\t%d\t\t\t\t%d\n",
442 intel_gpu_freq(rps,
443 (gpu_freq *
444 (IS_GEN9_BC(i915) ||
445 GRAPHICS_VER(i915) >= 11 ?
446 GEN9_FREQ_SCALER : 1))),
447 ((ia_freq >> 0) & 0xff) * 100,
448 ((ia_freq >> 8) & 0xff) * 100);
449 }
450 intel_runtime_pm_put(gt->uncore->rpm, wakeref);
451
452 return 0;
453}
454
455static bool llc_eval(void *data)
456{
457 struct intel_gt *gt = data;
458
459 return HAS_LLC(gt->i915);
460}
461
462DEFINE_INTEL_GT_DEBUGFS_ATTRIBUTE(llc);
463
464static const char *rps_power_to_str(unsigned int power)
465{
466 static const char * const strings[] = {
467 [LOW_POWER] = "low power",
468 [BETWEEN] = "mixed",
469 [HIGH_POWER] = "high power",
470 };
471
472 if (power >= ARRAY_SIZE(strings) || !strings[power])
473 return "unknown";
474
475 return strings[power];
476}
477
478static int rps_boost_show(struct seq_file *m, void *data)
479{
480 struct intel_gt *gt = m->private;
481 struct drm_i915_private *i915 = gt->i915;
482 struct intel_rps *rps = >->rps;
483
484 seq_printf(m, "RPS enabled? %s\n",
485 str_yes_no(intel_rps_is_enabled(rps)));
486 seq_printf(m, "RPS active? %s\n",
487 str_yes_no(intel_rps_is_active(rps)));
488 seq_printf(m, "GPU busy? %s, %llums\n",
489 str_yes_no(gt->awake),
490 ktime_to_ms(intel_gt_get_awake_time(gt)));
491 seq_printf(m, "Boosts outstanding? %d\n",
492 atomic_read(&rps->num_waiters));
493 seq_printf(m, "Interactive? %d\n", READ_ONCE(rps->power.interactive));
494 seq_printf(m, "Frequency requested %d, actual %d\n",
495 intel_gpu_freq(rps, rps->cur_freq),
496 intel_rps_read_actual_frequency(rps));
497 seq_printf(m, " min hard:%d, soft:%d; max soft:%d, hard:%d\n",
498 intel_gpu_freq(rps, rps->min_freq),
499 intel_gpu_freq(rps, rps->min_freq_softlimit),
500 intel_gpu_freq(rps, rps->max_freq_softlimit),
501 intel_gpu_freq(rps, rps->max_freq));
502 seq_printf(m, " idle:%d, efficient:%d, boost:%d\n",
503 intel_gpu_freq(rps, rps->idle_freq),
504 intel_gpu_freq(rps, rps->efficient_freq),
505 intel_gpu_freq(rps, rps->boost_freq));
506
507 seq_printf(m, "Wait boosts: %d\n", READ_ONCE(rps->boosts));
508
509 if (GRAPHICS_VER(i915) >= 6 && intel_rps_is_active(rps)) {
510 struct intel_uncore *uncore = gt->uncore;
511 u32 rpup, rpupei;
512 u32 rpdown, rpdownei;
513
514 intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);
515 rpup = intel_uncore_read_fw(uncore, GEN6_RP_CUR_UP) & GEN6_RP_EI_MASK;
516 rpupei = intel_uncore_read_fw(uncore, GEN6_RP_CUR_UP_EI) & GEN6_RP_EI_MASK;
517 rpdown = intel_uncore_read_fw(uncore, GEN6_RP_CUR_DOWN) & GEN6_RP_EI_MASK;
518 rpdownei = intel_uncore_read_fw(uncore, GEN6_RP_CUR_DOWN_EI) & GEN6_RP_EI_MASK;
519 intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
520
521 seq_printf(m, "\nRPS Autotuning (current \"%s\" window):\n",
522 rps_power_to_str(rps->power.mode));
523 seq_printf(m, " Avg. up: %d%% [above threshold? %d%%]\n",
524 rpup && rpupei ? 100 * rpup / rpupei : 0,
525 rps->power.up_threshold);
526 seq_printf(m, " Avg. down: %d%% [below threshold? %d%%]\n",
527 rpdown && rpdownei ? 100 * rpdown / rpdownei : 0,
528 rps->power.down_threshold);
529 } else {
530 seq_puts(m, "\nRPS Autotuning inactive\n");
531 }
532
533 return 0;
534}
535
536static bool rps_eval(void *data)
537{
538 struct intel_gt *gt = data;
539
540 if (intel_guc_slpc_is_used(gt_to_guc(gt)))
541 return false;
542 else
543 return HAS_RPS(gt->i915);
544}
545
546DEFINE_INTEL_GT_DEBUGFS_ATTRIBUTE(rps_boost);
547
548static int perf_limit_reasons_get(void *data, u64 *val)
549{
550 struct intel_gt *gt = data;
551 intel_wakeref_t wakeref;
552
553 with_intel_runtime_pm(gt->uncore->rpm, wakeref)
554 *val = intel_uncore_read(gt->uncore, intel_gt_perf_limit_reasons_reg(gt));
555
556 return 0;
557}
558
559static int perf_limit_reasons_clear(void *data, u64 val)
560{
561 struct intel_gt *gt = data;
562 intel_wakeref_t wakeref;
563
564 /*
565 * Clear the upper 16 "log" bits, the lower 16 "status" bits are
566 * read-only. The upper 16 "log" bits are identical to the lower 16
567 * "status" bits except that the "log" bits remain set until cleared.
568 */
569 with_intel_runtime_pm(gt->uncore->rpm, wakeref)
570 intel_uncore_rmw(gt->uncore, intel_gt_perf_limit_reasons_reg(gt),
571 GT0_PERF_LIMIT_REASONS_LOG_MASK, 0);
572
573 return 0;
574}
575
576static bool perf_limit_reasons_eval(void *data)
577{
578 struct intel_gt *gt = data;
579
580 return i915_mmio_reg_valid(intel_gt_perf_limit_reasons_reg(gt));
581}
582
583DEFINE_SIMPLE_ATTRIBUTE(perf_limit_reasons_fops, perf_limit_reasons_get,
584 perf_limit_reasons_clear, "0x%llx\n");
585
586void intel_gt_pm_debugfs_register(struct intel_gt *gt, struct dentry *root)
587{
588 static const struct intel_gt_debugfs_file files[] = {
589 { "drpc", &drpc_fops, NULL },
590 { "frequency", &frequency_fops, NULL },
591 { "forcewake", &fw_domains_fops, NULL },
592 { "forcewake_user", &forcewake_user_fops, NULL},
593 { "llc", &llc_fops, llc_eval },
594 { "rps_boost", &rps_boost_fops, rps_eval },
595 { "perf_limit_reasons", &perf_limit_reasons_fops, perf_limit_reasons_eval },
596 };
597
598 intel_gt_debugfs_register_files(root, files, ARRAY_SIZE(files), gt);
599}