drivers/gpu/drm/i915/gt/intel_gt_pm_debugfs.c

   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
  27 void intel_gt_pm_debugfs_forcewake_user_open(struct intel_gt *gt)
  28 {
  29         atomic_inc(&gt->user_wakeref);
  30         intel_gt_pm_get(gt);
  31         if (GRAPHICS_VER(gt->i915) >= 6)
  32                 intel_uncore_forcewake_user_get(gt->uncore);
  33 }
  34
  35 void 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(gt);
  40         atomic_dec(&gt->user_wakeref);
  41 }
  42
  43 static 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
  52 static 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
  61 static const struct file_operations forcewake_user_fops = {
  62         .owner = THIS_MODULE,
  63         .open = forcewake_user_open,
  64         .release = forcewake_user_release,
  65 };
  66
  67 static 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         seq_printf(m, "user.bypass_count = %u\n",
  75                    uncore->user_forcewake_count);
  76
  77         for_each_fw_domain(fw_domain, uncore, tmp)
  78                 seq_printf(m, "%s.wake_count = %u\n",
  79                            intel_uncore_forcewake_domain_to_str(fw_domain->id),
  80                            READ_ONCE(fw_domain->wake_count));
  81
  82         return 0;
  83 }
  84 DEFINE_INTEL_GT_DEBUGFS_ATTRIBUTE(fw_domains);
  85
  86 static int vlv_drpc(struct seq_file *m)
  87 {
  88         struct intel_gt *gt = m->private;
  89         struct intel_uncore *uncore = gt->uncore;
  90         u32 rcctl1, pw_status, mt_fwake_req;
  91
  92         mt_fwake_req = intel_uncore_read_fw(uncore, FORCEWAKE_MT);
  93         pw_status = intel_uncore_read(uncore, VLV_GTLC_PW_STATUS);
  94         rcctl1 = intel_uncore_read(uncore, GEN6_RC_CONTROL);
  95
  96         seq_printf(m, "RC6 Enabled: %s\n",
  97                    str_yes_no(rcctl1 & (GEN7_RC_CTL_TO_MODE |
  98                                         GEN6_RC_CTL_EI_MODE(1))));
  99         seq_printf(m, "Multi-threaded Forcewake Request: 0x%x\n", mt_fwake_req);
 100         seq_printf(m, "Render Power Well: %s\n",
 101                    (pw_status & VLV_GTLC_PW_RENDER_STATUS_MASK) ? "Up" : "Down");
 102         seq_printf(m, "Media Power Well: %s\n",
 103                    (pw_status & VLV_GTLC_PW_MEDIA_STATUS_MASK) ? "Up" : "Down");
 104
 105         intel_rc6_print_residency(m, "Render RC6 residency since boot:", INTEL_RC6_RES_RC6);
 106         intel_rc6_print_residency(m, "Media RC6 residency since boot:", INTEL_RC6_RES_VLV_MEDIA);
 107
 108         return fw_domains_show(m, NULL);
 109 }
 110
 111 static int gen6_drpc(struct seq_file *m)
 112 {
 113         struct intel_gt *gt = m->private;
 114         struct drm_i915_private *i915 = gt->i915;
 115         struct intel_uncore *uncore = gt->uncore;
 116         u32 gt_core_status, mt_fwake_req, rcctl1, rc6vids = 0;
 117         u32 gen9_powergate_enable = 0, gen9_powergate_status = 0;
 118
 119         mt_fwake_req = intel_uncore_read_fw(uncore, FORCEWAKE_MT);
 120         gt_core_status = intel_uncore_read_fw(uncore, GEN6_GT_CORE_STATUS);
 121
 122         rcctl1 = intel_uncore_read(uncore, GEN6_RC_CONTROL);
 123         if (GRAPHICS_VER(i915) >= 9) {
 124                 gen9_powergate_enable =
 125                         intel_uncore_read(uncore, GEN9_PG_ENABLE);
 126                 gen9_powergate_status =
 127                         intel_uncore_read(uncore, GEN9_PWRGT_DOMAIN_STATUS);
 128         }
 129
 130         if (GRAPHICS_VER(i915) <= 7)
 131                 snb_pcode_read(gt->uncore, GEN6_PCODE_READ_RC6VIDS, &rc6vids, NULL);
 132
 133         seq_printf(m, "RC1e Enabled: %s\n",
 134                    str_yes_no(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
 135         seq_printf(m, "RC6 Enabled: %s\n",
 136                    str_yes_no(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
 137         if (GRAPHICS_VER(i915) >= 9) {
 138                 seq_printf(m, "Render Well Gating Enabled: %s\n",
 139                            str_yes_no(gen9_powergate_enable & GEN9_RENDER_PG_ENABLE));
 140                 seq_printf(m, "Media Well Gating Enabled: %s\n",
 141                            str_yes_no(gen9_powergate_enable & GEN9_MEDIA_PG_ENABLE));
 142         }
 143         seq_printf(m, "Deep RC6 Enabled: %s\n",
 144                    str_yes_no(rcctl1 & GEN6_RC_CTL_RC6p_ENABLE));
 145         seq_printf(m, "Deepest RC6 Enabled: %s\n",
 146                    str_yes_no(rcctl1 & GEN6_RC_CTL_RC6pp_ENABLE));
 147         seq_puts(m, "Current RC state: ");
 148         switch (gt_core_status & GEN6_RCn_MASK) {
 149         case GEN6_RC0:
 150                 if (gt_core_status & GEN6_CORE_CPD_STATE_MASK)
 151                         seq_puts(m, "Core Power Down\n");
 152                 else
 153                         seq_puts(m, "on\n");
 154                 break;
 155         case GEN6_RC3:
 156                 seq_puts(m, "RC3\n");
 157                 break;
 158         case GEN6_RC6:
 159                 seq_puts(m, "RC6\n");
 160                 break;
 161         case GEN6_RC7:
 162                 seq_puts(m, "RC7\n");
 163                 break;
 164         default:
 165                 seq_puts(m, "Unknown\n");
 166                 break;
 167         }
 168
 169         seq_printf(m, "Core Power Down: %s\n",
 170                    str_yes_no(gt_core_status & GEN6_CORE_CPD_STATE_MASK));
 171         seq_printf(m, "Multi-threaded Forcewake Request: 0x%x\n", mt_fwake_req);
 172         if (GRAPHICS_VER(i915) >= 9) {
 173                 seq_printf(m, "Render Power Well: %s\n",
 174                            (gen9_powergate_status &
 175                             GEN9_PWRGT_RENDER_STATUS_MASK) ? "Up" : "Down");
 176                 seq_printf(m, "Media Power Well: %s\n",
 177                            (gen9_powergate_status &
 178                             GEN9_PWRGT_MEDIA_STATUS_MASK) ? "Up" : "Down");
 179         }
 180
 181         /* Not exactly sure what this is */
 182         intel_rc6_print_residency(m, "RC6 \"Locked to RPn\" residency since boot:",
 183                                   INTEL_RC6_RES_RC6_LOCKED);
 184         intel_rc6_print_residency(m, "RC6 residency since boot:", INTEL_RC6_RES_RC6);
 185         intel_rc6_print_residency(m, "RC6+ residency since boot:", INTEL_RC6_RES_RC6p);
 186         intel_rc6_print_residency(m, "RC6++ residency since boot:", INTEL_RC6_RES_RC6pp);
 187
 188         if (GRAPHICS_VER(i915) <= 7) {
 189                 seq_printf(m, "RC6   voltage: %dmV\n",
 190                            GEN6_DECODE_RC6_VID(((rc6vids >> 0) & 0xff)));
 191                 seq_printf(m, "RC6+  voltage: %dmV\n",
 192                            GEN6_DECODE_RC6_VID(((rc6vids >> 8) & 0xff)));
 193                 seq_printf(m, "RC6++ voltage: %dmV\n",
 194                            GEN6_DECODE_RC6_VID(((rc6vids >> 16) & 0xff)));
 195         }
 196
 197         return fw_domains_show(m, NULL);
 198 }
 199
 200 static int ilk_drpc(struct seq_file *m)
 201 {
 202         struct intel_gt *gt = m->private;
 203         struct intel_uncore *uncore = gt->uncore;
 204         u32 rgvmodectl, rstdbyctl;
 205         u16 crstandvid;
 206
 207         rgvmodectl = intel_uncore_read(uncore, MEMMODECTL);
 208         rstdbyctl = intel_uncore_read(uncore, RSTDBYCTL);
 209         crstandvid = intel_uncore_read16(uncore, CRSTANDVID);
 210
 211         seq_printf(m, "HD boost: %s\n",
 212                    str_yes_no(rgvmodectl & MEMMODE_BOOST_EN));
 213         seq_printf(m, "Boost freq: %d\n",
 214                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
 215                    MEMMODE_BOOST_FREQ_SHIFT);
 216         seq_printf(m, "HW control enabled: %s\n",
 217                    str_yes_no(rgvmodectl & MEMMODE_HWIDLE_EN));
 218         seq_printf(m, "SW control enabled: %s\n",
 219                    str_yes_no(rgvmodectl & MEMMODE_SWMODE_EN));
 220         seq_printf(m, "Gated voltage change: %s\n",
 221                    str_yes_no(rgvmodectl & MEMMODE_RCLK_GATE));
 222         seq_printf(m, "Starting frequency: P%d\n",
 223                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
 224         seq_printf(m, "Max P-state: P%d\n",
 225                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
 226         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
 227         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
 228         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
 229         seq_printf(m, "Render standby enabled: %s\n",
 230                    str_yes_no(!(rstdbyctl & RCX_SW_EXIT)));
 231         seq_puts(m, "Current RS state: ");
 232         switch (rstdbyctl & RSX_STATUS_MASK) {
 233         case RSX_STATUS_ON:
 234                 seq_puts(m, "on\n");
 235                 break;
 236         case RSX_STATUS_RC1:
 237                 seq_puts(m, "RC1\n");
 238                 break;
 239         case RSX_STATUS_RC1E:
 240                 seq_puts(m, "RC1E\n");
 241                 break;
 242         case RSX_STATUS_RS1:
 243                 seq_puts(m, "RS1\n");
 244                 break;
 245         case RSX_STATUS_RS2:
 246                 seq_puts(m, "RS2 (RC6)\n");
 247                 break;
 248         case RSX_STATUS_RS3:
 249                 seq_puts(m, "RC3 (RC6+)\n");
 250                 break;
 251         default:
 252                 seq_puts(m, "unknown\n");
 253                 break;
 254         }
 255
 256         return 0;
 257 }
 258
 259 static int mtl_drpc(struct seq_file *m)
 260 {
 261         struct intel_gt *gt = m->private;
 262         struct intel_uncore *uncore = gt->uncore;
 263         u32 gt_core_status, rcctl1, mt_fwake_req;
 264         u32 mtl_powergate_enable = 0, mtl_powergate_status = 0;
 265
 266         mt_fwake_req = intel_uncore_read_fw(uncore, FORCEWAKE_MT);
 267         gt_core_status = intel_uncore_read(uncore, MTL_MIRROR_TARGET_WP1);
 268
 269         rcctl1 = intel_uncore_read(uncore, GEN6_RC_CONTROL);
 270         mtl_powergate_enable = intel_uncore_read(uncore, GEN9_PG_ENABLE);
 271         mtl_powergate_status = intel_uncore_read(uncore,
 272                                                  GEN9_PWRGT_DOMAIN_STATUS);
 273
 274         seq_printf(m, "RC6 Enabled: %s\n",
 275                    str_yes_no(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
 276         if (gt->type == GT_MEDIA) {
 277                 seq_printf(m, "Media Well Gating Enabled: %s\n",
 278                            str_yes_no(mtl_powergate_enable & GEN9_MEDIA_PG_ENABLE));
 279         } else {
 280                 seq_printf(m, "Render Well Gating Enabled: %s\n",
 281                            str_yes_no(mtl_powergate_enable & GEN9_RENDER_PG_ENABLE));
 282         }
 283
 284         seq_puts(m, "Current RC state: ");
 285         switch (REG_FIELD_GET(MTL_CC_MASK, gt_core_status)) {
 286         case MTL_CC0:
 287                 seq_puts(m, "RC0\n");
 288                 break;
 289         case MTL_CC6:
 290                 seq_puts(m, "RC6\n");
 291                 break;
 292         default:
 293                 MISSING_CASE(REG_FIELD_GET(MTL_CC_MASK, gt_core_status));
 294                 seq_puts(m, "Unknown\n");
 295                 break;
 296         }
 297
 298         seq_printf(m, "Multi-threaded Forcewake Request: 0x%x\n", mt_fwake_req);
 299         if (gt->type == GT_MEDIA)
 300                 seq_printf(m, "Media Power Well: %s\n",
 301                            (mtl_powergate_status &
 302                             GEN9_PWRGT_MEDIA_STATUS_MASK) ? "Up" : "Down");
 303         else
 304                 seq_printf(m, "Render Power Well: %s\n",
 305                            (mtl_powergate_status &
 306                             GEN9_PWRGT_RENDER_STATUS_MASK) ? "Up" : "Down");
 307
 308         /* Works for both render and media gt's */
 309         intel_rc6_print_residency(m, "RC6 residency since boot:", INTEL_RC6_RES_RC6);
 310
 311         return fw_domains_show(m, NULL);
 312 }
 313
 314 static int drpc_show(struct seq_file *m, void *unused)
 315 {
 316         struct intel_gt *gt = m->private;
 317         struct drm_i915_private *i915 = gt->i915;
 318         intel_wakeref_t wakeref;
 319         int err = -ENODEV;
 320
 321         with_intel_runtime_pm(gt->uncore->rpm, wakeref) {
 322                 if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 70))
 323                         err = mtl_drpc(m);
 324                 else if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915))
 325                         err = vlv_drpc(m);
 326                 else if (GRAPHICS_VER(i915) >= 6)
 327                         err = gen6_drpc(m);
 328                 else
 329                         err = ilk_drpc(m);
 330         }
 331
 332         return err;
 333 }
 334 DEFINE_INTEL_GT_DEBUGFS_ATTRIBUTE(drpc);
 335
 336 void intel_gt_pm_frequency_dump(struct intel_gt *gt, struct drm_printer *p)
 337 {
 338         struct drm_i915_private *i915 = gt->i915;
 339         struct intel_uncore *uncore = gt->uncore;
 340         struct intel_rps *rps = &gt->rps;
 341         intel_wakeref_t wakeref;
 342
 343         wakeref = intel_runtime_pm_get(uncore->rpm);
 344
 345         if (GRAPHICS_VER(i915) == 5) {
 346                 u16 rgvswctl = intel_uncore_read16(uncore, MEMSWCTL);
 347                 u16 rgvstat = intel_uncore_read16(uncore, MEMSTAT_ILK);
 348
 349                 drm_printf(p, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 350                 drm_printf(p, "Requested VID: %d\n", rgvswctl & 0x3f);
 351                 drm_printf(p, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 352                            MEMSTAT_VID_SHIFT);
 353                 drm_printf(p, "Current P-state: %d\n",
 354                            REG_FIELD_GET(MEMSTAT_PSTATE_MASK, rgvstat));
 355         } else if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915)) {
 356                 u32 rpmodectl, freq_sts;
 357
 358                 rpmodectl = intel_uncore_read(uncore, GEN6_RP_CONTROL);
 359                 drm_printf(p, "Video Turbo Mode: %s\n",
 360                            str_yes_no(rpmodectl & GEN6_RP_MEDIA_TURBO));
 361                 drm_printf(p, "HW control enabled: %s\n",
 362                            str_yes_no(rpmodectl & GEN6_RP_ENABLE));
 363                 drm_printf(p, "SW control enabled: %s\n",
 364                            str_yes_no((rpmodectl & GEN6_RP_MEDIA_MODE_MASK) == GEN6_RP_MEDIA_SW_MODE));
 365
 366                 vlv_punit_get(i915);
 367                 freq_sts = vlv_punit_read(i915, PUNIT_REG_GPU_FREQ_STS);
 368                 vlv_punit_put(i915);
 369
 370                 drm_printf(p, "PUNIT_REG_GPU_FREQ_STS: 0x%08x\n", freq_sts);
 371                 drm_printf(p, "DDR freq: %d MHz\n", i915->mem_freq);
 372
 373                 drm_printf(p, "actual GPU freq: %d MHz\n",
 374                            intel_gpu_freq(rps, (freq_sts >> 8) & 0xff));
 375
 376                 drm_printf(p, "current GPU freq: %d MHz\n",
 377                            intel_gpu_freq(rps, rps->cur_freq));
 378
 379                 drm_printf(p, "max GPU freq: %d MHz\n",
 380                            intel_gpu_freq(rps, rps->max_freq));
 381
 382                 drm_printf(p, "min GPU freq: %d MHz\n",
 383                            intel_gpu_freq(rps, rps->min_freq));
 384
 385                 drm_printf(p, "idle GPU freq: %d MHz\n",
 386                            intel_gpu_freq(rps, rps->idle_freq));
 387
 388                 drm_printf(p, "efficient (RPe) frequency: %d MHz\n",
 389                            intel_gpu_freq(rps, rps->efficient_freq));
 390         } else if (GRAPHICS_VER(i915) >= 6) {
 391                 gen6_rps_frequency_dump(rps, p);
 392         } else {
 393                 drm_puts(p, "no P-state info available\n");
 394         }
 395
 396         drm_printf(p, "Current CD clock frequency: %d kHz\n", i915->display.cdclk.hw.cdclk);
 397         drm_printf(p, "Max CD clock frequency: %d kHz\n", i915->display.cdclk.max_cdclk_freq);
 398         drm_printf(p, "Max pixel clock frequency: %d kHz\n", i915->max_dotclk_freq);
 399
 400         intel_runtime_pm_put(uncore->rpm, wakeref);
 401 }
 402
 403 static int frequency_show(struct seq_file *m, void *unused)
 404 {
 405         struct intel_gt *gt = m->private;
 406         struct drm_printer p = drm_seq_file_printer(m);
 407
 408         intel_gt_pm_frequency_dump(gt, &p);
 409
 410         return 0;
 411 }
 412 DEFINE_INTEL_GT_DEBUGFS_ATTRIBUTE(frequency);
 413
 414 static int llc_show(struct seq_file *m, void *data)
 415 {
 416         struct intel_gt *gt = m->private;
 417         struct drm_i915_private *i915 = gt->i915;
 418         const bool edram = GRAPHICS_VER(i915) > 8;
 419         struct intel_rps *rps = &gt->rps;
 420         unsigned int max_gpu_freq, min_gpu_freq;
 421         intel_wakeref_t wakeref;
 422         int gpu_freq, ia_freq;
 423
 424         seq_printf(m, "LLC: %s\n", str_yes_no(HAS_LLC(i915)));
 425         seq_printf(m, "%s: %uMB\n", edram ? "eDRAM" : "eLLC",
 426                    i915->edram_size_mb);
 427
 428         min_gpu_freq = rps->min_freq;
 429         max_gpu_freq = rps->max_freq;
 430         if (IS_GEN9_BC(i915) || GRAPHICS_VER(i915) >= 11) {
 431                 /* Convert GT frequency to 50 HZ units */
 432                 min_gpu_freq /= GEN9_FREQ_SCALER;
 433                 max_gpu_freq /= GEN9_FREQ_SCALER;
 434         }
 435
 436         seq_puts(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\tEffective Ring freq (MHz)\n");
 437
 438         wakeref = intel_runtime_pm_get(gt->uncore->rpm);
 439         for (gpu_freq = min_gpu_freq; gpu_freq <= max_gpu_freq; gpu_freq++) {
 440                 ia_freq = gpu_freq;
 441                 snb_pcode_read(gt->uncore, GEN6_PCODE_READ_MIN_FREQ_TABLE,
 442                                &ia_freq, NULL);
 443                 seq_printf(m, "%d\t\t%d\t\t\t\t%d\n",
 444                            intel_gpu_freq(rps,
 445                                           (gpu_freq *
 446                                            (IS_GEN9_BC(i915) ||
 447                                             GRAPHICS_VER(i915) >= 11 ?
 448                                             GEN9_FREQ_SCALER : 1))),
 449                            ((ia_freq >> 0) & 0xff) * 100,
 450                            ((ia_freq >> 8) & 0xff) * 100);
 451         }
 452         intel_runtime_pm_put(gt->uncore->rpm, wakeref);
 453
 454         return 0;
 455 }
 456
 457 static bool llc_eval(void *data)
 458 {
 459         struct intel_gt *gt = data;
 460
 461         return HAS_LLC(gt->i915);
 462 }
 463
 464 DEFINE_INTEL_GT_DEBUGFS_ATTRIBUTE(llc);
 465
 466 static const char *rps_power_to_str(unsigned int power)
 467 {
 468         static const char * const strings[] = {
 469                 [LOW_POWER] = "low power",
 470                 [BETWEEN] = "mixed",
 471                 [HIGH_POWER] = "high power",
 472         };
 473
 474         if (power >= ARRAY_SIZE(strings) || !strings[power])
 475                 return "unknown";
 476
 477         return strings[power];
 478 }
 479
 480 static int rps_boost_show(struct seq_file *m, void *data)
 481 {
 482         struct intel_gt *gt = m->private;
 483         struct drm_i915_private *i915 = gt->i915;
 484         struct intel_rps *rps = &gt->rps;
 485
 486         seq_printf(m, "RPS enabled? %s\n",
 487                    str_yes_no(intel_rps_is_enabled(rps)));
 488         seq_printf(m, "RPS active? %s\n",
 489                    str_yes_no(intel_rps_is_active(rps)));
 490         seq_printf(m, "GPU busy? %s, %llums\n",
 491                    str_yes_no(gt->awake),
 492                    ktime_to_ms(intel_gt_get_awake_time(gt)));
 493         seq_printf(m, "Boosts outstanding? %d\n",
 494                    atomic_read(&rps->num_waiters));
 495         seq_printf(m, "Interactive? %d\n", READ_ONCE(rps->power.interactive));
 496         seq_printf(m, "Frequency requested %d, actual %d\n",
 497                    intel_gpu_freq(rps, rps->cur_freq),
 498                    intel_rps_read_actual_frequency(rps));
 499         seq_printf(m, "  min hard:%d, soft:%d; max soft:%d, hard:%d\n",
 500                    intel_gpu_freq(rps, rps->min_freq),
 501                    intel_gpu_freq(rps, rps->min_freq_softlimit),
 502                    intel_gpu_freq(rps, rps->max_freq_softlimit),
 503                    intel_gpu_freq(rps, rps->max_freq));
 504         seq_printf(m, "  idle:%d, efficient:%d, boost:%d\n",
 505                    intel_gpu_freq(rps, rps->idle_freq),
 506                    intel_gpu_freq(rps, rps->efficient_freq),
 507                    intel_gpu_freq(rps, rps->boost_freq));
 508
 509         seq_printf(m, "Wait boosts: %d\n", READ_ONCE(rps->boosts));
 510
 511         if (GRAPHICS_VER(i915) >= 6 && intel_rps_is_active(rps)) {
 512                 struct intel_uncore *uncore = gt->uncore;
 513                 u32 rpup, rpupei;
 514                 u32 rpdown, rpdownei;
 515
 516                 intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);
 517                 rpup = intel_uncore_read_fw(uncore, GEN6_RP_CUR_UP) & GEN6_RP_EI_MASK;
 518                 rpupei = intel_uncore_read_fw(uncore, GEN6_RP_CUR_UP_EI) & GEN6_RP_EI_MASK;
 519                 rpdown = intel_uncore_read_fw(uncore, GEN6_RP_CUR_DOWN) & GEN6_RP_EI_MASK;
 520                 rpdownei = intel_uncore_read_fw(uncore, GEN6_RP_CUR_DOWN_EI) & GEN6_RP_EI_MASK;
 521                 intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
 522
 523                 seq_printf(m, "\nRPS Autotuning (current \"%s\" window):\n",
 524                            rps_power_to_str(rps->power.mode));
 525                 seq_printf(m, "  Avg. up: %d%% [above threshold? %d%%]\n",
 526                            rpup && rpupei ? 100 * rpup / rpupei : 0,
 527                            rps->power.up_threshold);
 528                 seq_printf(m, "  Avg. down: %d%% [below threshold? %d%%]\n",
 529                            rpdown && rpdownei ? 100 * rpdown / rpdownei : 0,
 530                            rps->power.down_threshold);
 531         } else {
 532                 seq_puts(m, "\nRPS Autotuning inactive\n");
 533         }
 534
 535         return 0;
 536 }
 537
 538 static bool rps_eval(void *data)
 539 {
 540         struct intel_gt *gt = data;
 541
 542         if (intel_guc_slpc_is_used(&gt->uc.guc))
 543                 return false;
 544         else
 545                 return HAS_RPS(gt->i915);
 546 }
 547
 548 DEFINE_INTEL_GT_DEBUGFS_ATTRIBUTE(rps_boost);
 549
 550 static int perf_limit_reasons_get(void *data, u64 *val)
 551 {
 552         struct intel_gt *gt = data;
 553         intel_wakeref_t wakeref;
 554
 555         with_intel_runtime_pm(gt->uncore->rpm, wakeref)
 556                 *val = intel_uncore_read(gt->uncore, intel_gt_perf_limit_reasons_reg(gt));
 557
 558         return 0;
 559 }
 560
 561 static int perf_limit_reasons_clear(void *data, u64 val)
 562 {
 563         struct intel_gt *gt = data;
 564         intel_wakeref_t wakeref;
 565
 566         /*
 567          * Clear the upper 16 "log" bits, the lower 16 "status" bits are
 568          * read-only. The upper 16 "log" bits are identical to the lower 16
 569          * "status" bits except that the "log" bits remain set until cleared.
 570          */
 571         with_intel_runtime_pm(gt->uncore->rpm, wakeref)
 572                 intel_uncore_rmw(gt->uncore, intel_gt_perf_limit_reasons_reg(gt),
 573                                  GT0_PERF_LIMIT_REASONS_LOG_MASK, 0);
 574
 575         return 0;
 576 }
 577
 578 static bool perf_limit_reasons_eval(void *data)
 579 {
 580         struct intel_gt *gt = data;
 581
 582         return i915_mmio_reg_valid(intel_gt_perf_limit_reasons_reg(gt));
 583 }
 584
 585 DEFINE_SIMPLE_ATTRIBUTE(perf_limit_reasons_fops, perf_limit_reasons_get,
 586                         perf_limit_reasons_clear, "0x%llx\n");
 587
 588 void intel_gt_pm_debugfs_register(struct intel_gt *gt, struct dentry *root)
 589 {
 590         static const struct intel_gt_debugfs_file files[] = {
 591                 { "drpc", &drpc_fops, NULL },
 592                 { "frequency", &frequency_fops, NULL },
 593                 { "forcewake", &fw_domains_fops, NULL },
 594                 { "forcewake_user", &forcewake_user_fops, NULL},
 595                 { "llc", &llc_fops, llc_eval },
 596                 { "rps_boost", &rps_boost_fops, rps_eval },
 597                 { "perf_limit_reasons", &perf_limit_reasons_fops, perf_limit_reasons_eval },
 598         };
 599
 600         intel_gt_debugfs_register_files(root, files, ARRAY_SIZE(files), gt);
 601 }