drivers/gpu/drm/i915/i915_debugfs.c

   1 /*
   2  * Copyright © 2008 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  * Authors:
  24  *    Eric Anholt <eric@anholt.net>
  25  *    Keith Packard <keithp@keithp.com>
  26  *
  27  */
  28
  29 #include <linux/seq_file.h>
  30 #include <linux/debugfs.h>
  31 #include <linux/slab.h>
  32 #include <linux/export.h>
  33 #include "drmP.h"
  34 #include "drm.h"
  35 #include "intel_drv.h"
  36 #include "intel_ringbuffer.h"
  37 #include "i915_drm.h"
  38 #include "i915_drv.h"
  39
  40 #define DRM_I915_RING_DEBUG 1
  41
  42
  43 #if defined(CONFIG_DEBUG_FS)
  44
  45 enum {
  46         ACTIVE_LIST,
  47         FLUSHING_LIST,
  48         INACTIVE_LIST,
  49         PINNED_LIST,
  50         DEFERRED_FREE_LIST,
  51 };
  52
  53 static const char *yesno(int v)
  54 {
  55         return v ? "yes" : "no";
  56 }
  57
  58 static int i915_capabilities(struct seq_file *m, void *data)
  59 {
  60         struct drm_info_node *node = (struct drm_info_node *) m->private;
  61         struct drm_device *dev = node->minor->dev;
  62         const struct intel_device_info *info = INTEL_INFO(dev);
  63
  64         seq_printf(m, "gen: %d\n", info->gen);
  65         seq_printf(m, "pch: %d\n", INTEL_PCH_TYPE(dev));
  66 #define B(x) seq_printf(m, #x ": %s\n", yesno(info->x))
  67         B(is_mobile);
  68         B(is_i85x);
  69         B(is_i915g);
  70         B(is_i945gm);
  71         B(is_g33);
  72         B(need_gfx_hws);
  73         B(is_g4x);
  74         B(is_pineview);
  75         B(is_broadwater);
  76         B(is_crestline);
  77         B(has_fbc);
  78         B(has_pipe_cxsr);
  79         B(has_hotplug);
  80         B(cursor_needs_physical);
  81         B(has_overlay);
  82         B(overlay_needs_physical);
  83         B(supports_tv);
  84         B(has_bsd_ring);
  85         B(has_blt_ring);
  86         B(has_llc);
  87 #undef B
  88
  89         return 0;
  90 }
  91
  92 static const char *get_pin_flag(struct drm_i915_gem_object *obj)
  93 {
  94         if (obj->user_pin_count > 0)
  95                 return "P";
  96         else if (obj->pin_count > 0)
  97                 return "p";
  98         else
  99                 return " ";
 100 }
 101
 102 static const char *get_tiling_flag(struct drm_i915_gem_object *obj)
 103 {
 104         switch (obj->tiling_mode) {
 105         default:
 106         case I915_TILING_NONE: return " ";
 107         case I915_TILING_X: return "X";
 108         case I915_TILING_Y: return "Y";
 109         }
 110 }
 111
 112 static const char *cache_level_str(int type)
 113 {
 114         switch (type) {
 115         case I915_CACHE_NONE: return " uncached";
 116         case I915_CACHE_LLC: return " snooped (LLC)";
 117         case I915_CACHE_LLC_MLC: return " snooped (LLC+MLC)";
 118         default: return "";
 119         }
 120 }
 121
 122 static void
 123 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 124 {
 125         seq_printf(m, "%p: %s%s %8zdKiB %04x %04x %d %d%s%s%s",
 126                    &obj->base,
 127                    get_pin_flag(obj),
 128                    get_tiling_flag(obj),
 129                    obj->base.size / 1024,
 130                    obj->base.read_domains,
 131                    obj->base.write_domain,
 132                    obj->last_rendering_seqno,
 133                    obj->last_fenced_seqno,
 134                    cache_level_str(obj->cache_level),
 135                    obj->dirty ? " dirty" : "",
 136                    obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
 137         if (obj->base.name)
 138                 seq_printf(m, " (name: %d)", obj->base.name);
 139         if (obj->fence_reg != I915_FENCE_REG_NONE)
 140                 seq_printf(m, " (fence: %d)", obj->fence_reg);
 141         if (obj->gtt_space != NULL)
 142                 seq_printf(m, " (gtt offset: %08x, size: %08x)",
 143                            obj->gtt_offset, (unsigned int)obj->gtt_space->size);
 144         if (obj->pin_mappable || obj->fault_mappable) {
 145                 char s[3], *t = s;
 146                 if (obj->pin_mappable)
 147                         *t++ = 'p';
 148                 if (obj->fault_mappable)
 149                         *t++ = 'f';
 150                 *t = '\0';
 151                 seq_printf(m, " (%s mappable)", s);
 152         }
 153         if (obj->ring != NULL)
 154                 seq_printf(m, " (%s)", obj->ring->name);
 155 }
 156
 157 static int i915_gem_object_list_info(struct seq_file *m, void *data)
 158 {
 159         struct drm_info_node *node = (struct drm_info_node *) m->private;
 160         uintptr_t list = (uintptr_t) node->info_ent->data;
 161         struct list_head *head;
 162         struct drm_device *dev = node->minor->dev;
 163         drm_i915_private_t *dev_priv = dev->dev_private;
 164         struct drm_i915_gem_object *obj;
 165         size_t total_obj_size, total_gtt_size;
 166         int count, ret;
 167
 168         ret = mutex_lock_interruptible(&dev->struct_mutex);
 169         if (ret)
 170                 return ret;
 171
 172         switch (list) {
 173         case ACTIVE_LIST:
 174                 seq_printf(m, "Active:\n");
 175                 head = &dev_priv->mm.active_list;
 176                 break;
 177         case INACTIVE_LIST:
 178                 seq_printf(m, "Inactive:\n");
 179                 head = &dev_priv->mm.inactive_list;
 180                 break;
 181         case PINNED_LIST:
 182                 seq_printf(m, "Pinned:\n");
 183                 head = &dev_priv->mm.pinned_list;
 184                 break;
 185         case FLUSHING_LIST:
 186                 seq_printf(m, "Flushing:\n");
 187                 head = &dev_priv->mm.flushing_list;
 188                 break;
 189         case DEFERRED_FREE_LIST:
 190                 seq_printf(m, "Deferred free:\n");
 191                 head = &dev_priv->mm.deferred_free_list;
 192                 break;
 193         default:
 194                 mutex_unlock(&dev->struct_mutex);
 195                 return -EINVAL;
 196         }
 197
 198         total_obj_size = total_gtt_size = count = 0;
 199         list_for_each_entry(obj, head, mm_list) {
 200                 seq_printf(m, "   ");
 201                 describe_obj(m, obj);
 202                 seq_printf(m, "\n");
 203                 total_obj_size += obj->base.size;
 204                 total_gtt_size += obj->gtt_space->size;
 205                 count++;
 206         }
 207         mutex_unlock(&dev->struct_mutex);
 208
 209         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 210                    count, total_obj_size, total_gtt_size);
 211         return 0;
 212 }
 213
 214 #define count_objects(list, member) do { \
 215         list_for_each_entry(obj, list, member) { \
 216                 size += obj->gtt_space->size; \
 217                 ++count; \
 218                 if (obj->map_and_fenceable) { \
 219                         mappable_size += obj->gtt_space->size; \
 220                         ++mappable_count; \
 221                 } \
 222         } \
 223 } while (0)
 224
 225 static int i915_gem_object_info(struct seq_file *m, void* data)
 226 {
 227         struct drm_info_node *node = (struct drm_info_node *) m->private;
 228         struct drm_device *dev = node->minor->dev;
 229         struct drm_i915_private *dev_priv = dev->dev_private;
 230         u32 count, mappable_count;
 231         size_t size, mappable_size;
 232         struct drm_i915_gem_object *obj;
 233         int ret;
 234
 235         ret = mutex_lock_interruptible(&dev->struct_mutex);
 236         if (ret)
 237                 return ret;
 238
 239         seq_printf(m, "%u objects, %zu bytes\n",
 240                    dev_priv->mm.object_count,
 241                    dev_priv->mm.object_memory);
 242
 243         size = count = mappable_size = mappable_count = 0;
 244         count_objects(&dev_priv->mm.gtt_list, gtt_list);
 245         seq_printf(m, "%u [%u] objects, %zu [%zu] bytes in gtt\n",
 246                    count, mappable_count, size, mappable_size);
 247
 248         size = count = mappable_size = mappable_count = 0;
 249         count_objects(&dev_priv->mm.active_list, mm_list);
 250         count_objects(&dev_priv->mm.flushing_list, mm_list);
 251         seq_printf(m, "  %u [%u] active objects, %zu [%zu] bytes\n",
 252                    count, mappable_count, size, mappable_size);
 253
 254         size = count = mappable_size = mappable_count = 0;
 255         count_objects(&dev_priv->mm.pinned_list, mm_list);
 256         seq_printf(m, "  %u [%u] pinned objects, %zu [%zu] bytes\n",
 257                    count, mappable_count, size, mappable_size);
 258
 259         size = count = mappable_size = mappable_count = 0;
 260         count_objects(&dev_priv->mm.inactive_list, mm_list);
 261         seq_printf(m, "  %u [%u] inactive objects, %zu [%zu] bytes\n",
 262                    count, mappable_count, size, mappable_size);
 263
 264         size = count = mappable_size = mappable_count = 0;
 265         count_objects(&dev_priv->mm.deferred_free_list, mm_list);
 266         seq_printf(m, "  %u [%u] freed objects, %zu [%zu] bytes\n",
 267                    count, mappable_count, size, mappable_size);
 268
 269         size = count = mappable_size = mappable_count = 0;
 270         list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
 271                 if (obj->fault_mappable) {
 272                         size += obj->gtt_space->size;
 273                         ++count;
 274                 }
 275                 if (obj->pin_mappable) {
 276                         mappable_size += obj->gtt_space->size;
 277                         ++mappable_count;
 278                 }
 279         }
 280         seq_printf(m, "%u pinned mappable objects, %zu bytes\n",
 281                    mappable_count, mappable_size);
 282         seq_printf(m, "%u fault mappable objects, %zu bytes\n",
 283                    count, size);
 284
 285         seq_printf(m, "%zu [%zu] gtt total\n",
 286                    dev_priv->mm.gtt_total, dev_priv->mm.mappable_gtt_total);
 287
 288         mutex_unlock(&dev->struct_mutex);
 289
 290         return 0;
 291 }
 292
 293 static int i915_gem_gtt_info(struct seq_file *m, void* data)
 294 {
 295         struct drm_info_node *node = (struct drm_info_node *) m->private;
 296         struct drm_device *dev = node->minor->dev;
 297         struct drm_i915_private *dev_priv = dev->dev_private;
 298         struct drm_i915_gem_object *obj;
 299         size_t total_obj_size, total_gtt_size;
 300         int count, ret;
 301
 302         ret = mutex_lock_interruptible(&dev->struct_mutex);
 303         if (ret)
 304                 return ret;
 305
 306         total_obj_size = total_gtt_size = count = 0;
 307         list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
 308                 seq_printf(m, "   ");
 309                 describe_obj(m, obj);
 310                 seq_printf(m, "\n");
 311                 total_obj_size += obj->base.size;
 312                 total_gtt_size += obj->gtt_space->size;
 313                 count++;
 314         }
 315
 316         mutex_unlock(&dev->struct_mutex);
 317
 318         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 319                    count, total_obj_size, total_gtt_size);
 320
 321         return 0;
 322 }
 323
 324
 325 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
 326 {
 327         struct drm_info_node *node = (struct drm_info_node *) m->private;
 328         struct drm_device *dev = node->minor->dev;
 329         unsigned long flags;
 330         struct intel_crtc *crtc;
 331
 332         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
 333                 const char pipe = pipe_name(crtc->pipe);
 334                 const char plane = plane_name(crtc->plane);
 335                 struct intel_unpin_work *work;
 336
 337                 spin_lock_irqsave(&dev->event_lock, flags);
 338                 work = crtc->unpin_work;
 339                 if (work == NULL) {
 340                         seq_printf(m, "No flip due on pipe %c (plane %c)\n",
 341                                    pipe, plane);
 342                 } else {
 343                         if (!work->pending) {
 344                                 seq_printf(m, "Flip queued on pipe %c (plane %c)\n",
 345                                            pipe, plane);
 346                         } else {
 347                                 seq_printf(m, "Flip pending (waiting for vsync) on pipe %c (plane %c)\n",
 348                                            pipe, plane);
 349                         }
 350                         if (work->enable_stall_check)
 351                                 seq_printf(m, "Stall check enabled, ");
 352                         else
 353                                 seq_printf(m, "Stall check waiting for page flip ioctl, ");
 354                         seq_printf(m, "%d prepares\n", work->pending);
 355
 356                         if (work->old_fb_obj) {
 357                                 struct drm_i915_gem_object *obj = work->old_fb_obj;
 358                                 if (obj)
 359                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 360                         }
 361                         if (work->pending_flip_obj) {
 362                                 struct drm_i915_gem_object *obj = work->pending_flip_obj;
 363                                 if (obj)
 364                                         seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 365                         }
 366                 }
 367                 spin_unlock_irqrestore(&dev->event_lock, flags);
 368         }
 369
 370         return 0;
 371 }
 372
 373 static int i915_gem_request_info(struct seq_file *m, void *data)
 374 {
 375         struct drm_info_node *node = (struct drm_info_node *) m->private;
 376         struct drm_device *dev = node->minor->dev;
 377         drm_i915_private_t *dev_priv = dev->dev_private;
 378         struct drm_i915_gem_request *gem_request;
 379         int ret, count;
 380
 381         ret = mutex_lock_interruptible(&dev->struct_mutex);
 382         if (ret)
 383                 return ret;
 384
 385         count = 0;
 386         if (!list_empty(&dev_priv->ring[RCS].request_list)) {
 387                 seq_printf(m, "Render requests:\n");
 388                 list_for_each_entry(gem_request,
 389                                     &dev_priv->ring[RCS].request_list,
 390                                     list) {
 391                         seq_printf(m, "    %d @ %d\n",
 392                                    gem_request->seqno,
 393                                    (int) (jiffies - gem_request->emitted_jiffies));
 394                 }
 395                 count++;
 396         }
 397         if (!list_empty(&dev_priv->ring[VCS].request_list)) {
 398                 seq_printf(m, "BSD requests:\n");
 399                 list_for_each_entry(gem_request,
 400                                     &dev_priv->ring[VCS].request_list,
 401                                     list) {
 402                         seq_printf(m, "    %d @ %d\n",
 403                                    gem_request->seqno,
 404                                    (int) (jiffies - gem_request->emitted_jiffies));
 405                 }
 406                 count++;
 407         }
 408         if (!list_empty(&dev_priv->ring[BCS].request_list)) {
 409                 seq_printf(m, "BLT requests:\n");
 410                 list_for_each_entry(gem_request,
 411                                     &dev_priv->ring[BCS].request_list,
 412                                     list) {
 413                         seq_printf(m, "    %d @ %d\n",
 414                                    gem_request->seqno,
 415                                    (int) (jiffies - gem_request->emitted_jiffies));
 416                 }
 417                 count++;
 418         }
 419         mutex_unlock(&dev->struct_mutex);
 420
 421         if (count == 0)
 422                 seq_printf(m, "No requests\n");
 423
 424         return 0;
 425 }
 426
 427 static void i915_ring_seqno_info(struct seq_file *m,
 428                                  struct intel_ring_buffer *ring)
 429 {
 430         if (ring->get_seqno) {
 431                 seq_printf(m, "Current sequence (%s): %d\n",
 432                            ring->name, ring->get_seqno(ring));
 433                 seq_printf(m, "Waiter sequence (%s):  %d\n",
 434                            ring->name, ring->waiting_seqno);
 435                 seq_printf(m, "IRQ sequence (%s):     %d\n",
 436                            ring->name, ring->irq_seqno);
 437         }
 438 }
 439
 440 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 441 {
 442         struct drm_info_node *node = (struct drm_info_node *) m->private;
 443         struct drm_device *dev = node->minor->dev;
 444         drm_i915_private_t *dev_priv = dev->dev_private;
 445         int ret, i;
 446
 447         ret = mutex_lock_interruptible(&dev->struct_mutex);
 448         if (ret)
 449                 return ret;
 450
 451         for (i = 0; i < I915_NUM_RINGS; i++)
 452                 i915_ring_seqno_info(m, &dev_priv->ring[i]);
 453
 454         mutex_unlock(&dev->struct_mutex);
 455
 456         return 0;
 457 }
 458
 459
 460 static int i915_interrupt_info(struct seq_file *m, void *data)
 461 {
 462         struct drm_info_node *node = (struct drm_info_node *) m->private;
 463         struct drm_device *dev = node->minor->dev;
 464         drm_i915_private_t *dev_priv = dev->dev_private;
 465         int ret, i, pipe;
 466
 467         ret = mutex_lock_interruptible(&dev->struct_mutex);
 468         if (ret)
 469                 return ret;
 470
 471         if (!HAS_PCH_SPLIT(dev)) {
 472                 seq_printf(m, "Interrupt enable:    %08x\n",
 473                            I915_READ(IER));
 474                 seq_printf(m, "Interrupt identity:  %08x\n",
 475                            I915_READ(IIR));
 476                 seq_printf(m, "Interrupt mask:      %08x\n",
 477                            I915_READ(IMR));
 478                 for_each_pipe(pipe)
 479                         seq_printf(m, "Pipe %c stat:         %08x\n",
 480                                    pipe_name(pipe),
 481                                    I915_READ(PIPESTAT(pipe)));
 482         } else {
 483                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
 484                            I915_READ(DEIER));
 485                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
 486                            I915_READ(DEIIR));
 487                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
 488                            I915_READ(DEIMR));
 489                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
 490                            I915_READ(SDEIER));
 491                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
 492                            I915_READ(SDEIIR));
 493                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
 494                            I915_READ(SDEIMR));
 495                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
 496                            I915_READ(GTIER));
 497                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
 498                            I915_READ(GTIIR));
 499                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
 500                            I915_READ(GTIMR));
 501         }
 502         seq_printf(m, "Interrupts received: %d\n",
 503                    atomic_read(&dev_priv->irq_received));
 504         for (i = 0; i < I915_NUM_RINGS; i++) {
 505                 if (IS_GEN6(dev) || IS_GEN7(dev)) {
 506                         seq_printf(m, "Graphics Interrupt mask (%s):    %08x\n",
 507                                    dev_priv->ring[i].name,
 508                                    I915_READ_IMR(&dev_priv->ring[i]));
 509                 }
 510                 i915_ring_seqno_info(m, &dev_priv->ring[i]);
 511         }
 512         mutex_unlock(&dev->struct_mutex);
 513
 514         return 0;
 515 }
 516
 517 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 518 {
 519         struct drm_info_node *node = (struct drm_info_node *) m->private;
 520         struct drm_device *dev = node->minor->dev;
 521         drm_i915_private_t *dev_priv = dev->dev_private;
 522         int i, ret;
 523
 524         ret = mutex_lock_interruptible(&dev->struct_mutex);
 525         if (ret)
 526                 return ret;
 527
 528         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 529         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 530         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 531                 struct drm_i915_gem_object *obj = dev_priv->fence_regs[i].obj;
 532
 533                 seq_printf(m, "Fenced object[%2d] = ", i);
 534                 if (obj == NULL)
 535                         seq_printf(m, "unused");
 536                 else
 537                         describe_obj(m, obj);
 538                 seq_printf(m, "\n");
 539         }
 540
 541         mutex_unlock(&dev->struct_mutex);
 542         return 0;
 543 }
 544
 545 static int i915_hws_info(struct seq_file *m, void *data)
 546 {
 547         struct drm_info_node *node = (struct drm_info_node *) m->private;
 548         struct drm_device *dev = node->minor->dev;
 549         drm_i915_private_t *dev_priv = dev->dev_private;
 550         struct intel_ring_buffer *ring;
 551         const volatile u32 __iomem *hws;
 552         int i;
 553
 554         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 555         hws = (volatile u32 __iomem *)ring->status_page.page_addr;
 556         if (hws == NULL)
 557                 return 0;
 558
 559         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 560                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 561                            i * 4,
 562                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 563         }
 564         return 0;
 565 }
 566
 567 static int i915_ringbuffer_data(struct seq_file *m, void *data)
 568 {
 569         struct drm_info_node *node = (struct drm_info_node *) m->private;
 570         struct drm_device *dev = node->minor->dev;
 571         drm_i915_private_t *dev_priv = dev->dev_private;
 572         struct intel_ring_buffer *ring;
 573         int ret;
 574
 575         ret = mutex_lock_interruptible(&dev->struct_mutex);
 576         if (ret)
 577                 return ret;
 578
 579         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 580         if (!ring->obj) {
 581                 seq_printf(m, "No ringbuffer setup\n");
 582         } else {
 583                 const u8 __iomem *virt = ring->virtual_start;
 584                 uint32_t off;
 585
 586                 for (off = 0; off < ring->size; off += 4) {
 587                         uint32_t *ptr = (uint32_t *)(virt + off);
 588                         seq_printf(m, "%08x :  %08x\n", off, *ptr);
 589                 }
 590         }
 591         mutex_unlock(&dev->struct_mutex);
 592
 593         return 0;
 594 }
 595
 596 static int i915_ringbuffer_info(struct seq_file *m, void *data)
 597 {
 598         struct drm_info_node *node = (struct drm_info_node *) m->private;
 599         struct drm_device *dev = node->minor->dev;
 600         drm_i915_private_t *dev_priv = dev->dev_private;
 601         struct intel_ring_buffer *ring;
 602         int ret;
 603
 604         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 605         if (ring->size == 0)
 606                 return 0;
 607
 608         ret = mutex_lock_interruptible(&dev->struct_mutex);
 609         if (ret)
 610                 return ret;
 611
 612         seq_printf(m, "Ring %s:\n", ring->name);
 613         seq_printf(m, "  Head :    %08x\n", I915_READ_HEAD(ring) & HEAD_ADDR);
 614         seq_printf(m, "  Tail :    %08x\n", I915_READ_TAIL(ring) & TAIL_ADDR);
 615         seq_printf(m, "  Size :    %08x\n", ring->size);
 616         seq_printf(m, "  Active :  %08x\n", intel_ring_get_active_head(ring));
 617         seq_printf(m, "  NOPID :   %08x\n", I915_READ_NOPID(ring));
 618         if (IS_GEN6(dev) || IS_GEN7(dev)) {
 619                 seq_printf(m, "  Sync 0 :   %08x\n", I915_READ_SYNC_0(ring));
 620                 seq_printf(m, "  Sync 1 :   %08x\n", I915_READ_SYNC_1(ring));
 621         }
 622         seq_printf(m, "  Control : %08x\n", I915_READ_CTL(ring));
 623         seq_printf(m, "  Start :   %08x\n", I915_READ_START(ring));
 624
 625         mutex_unlock(&dev->struct_mutex);
 626
 627         return 0;
 628 }
 629
 630 static const char *ring_str(int ring)
 631 {
 632         switch (ring) {
 633         case RCS: return "render";
 634         case VCS: return "bsd";
 635         case BCS: return "blt";
 636         default: return "";
 637         }
 638 }
 639
 640 static const char *pin_flag(int pinned)
 641 {
 642         if (pinned > 0)
 643                 return " P";
 644         else if (pinned < 0)
 645                 return " p";
 646         else
 647                 return "";
 648 }
 649
 650 static const char *tiling_flag(int tiling)
 651 {
 652         switch (tiling) {
 653         default:
 654         case I915_TILING_NONE: return "";
 655         case I915_TILING_X: return " X";
 656         case I915_TILING_Y: return " Y";
 657         }
 658 }
 659
 660 static const char *dirty_flag(int dirty)
 661 {
 662         return dirty ? " dirty" : "";
 663 }
 664
 665 static const char *purgeable_flag(int purgeable)
 666 {
 667         return purgeable ? " purgeable" : "";
 668 }
 669
 670 static void print_error_buffers(struct seq_file *m,
 671                                 const char *name,
 672                                 struct drm_i915_error_buffer *err,
 673                                 int count)
 674 {
 675         seq_printf(m, "%s [%d]:\n", name, count);
 676
 677         while (count--) {
 678                 seq_printf(m, "  %08x %8u %04x %04x %08x%s%s%s%s%s%s%s",
 679                            err->gtt_offset,
 680                            err->size,
 681                            err->read_domains,
 682                            err->write_domain,
 683                            err->seqno,
 684                            pin_flag(err->pinned),
 685                            tiling_flag(err->tiling),
 686                            dirty_flag(err->dirty),
 687                            purgeable_flag(err->purgeable),
 688                            err->ring != -1 ? " " : "",
 689                            ring_str(err->ring),
 690                            cache_level_str(err->cache_level));
 691
 692                 if (err->name)
 693                         seq_printf(m, " (name: %d)", err->name);
 694                 if (err->fence_reg != I915_FENCE_REG_NONE)
 695                         seq_printf(m, " (fence: %d)", err->fence_reg);
 696
 697                 seq_printf(m, "\n");
 698                 err++;
 699         }
 700 }
 701
 702 static void i915_ring_error_state(struct seq_file *m,
 703                                   struct drm_device *dev,
 704                                   struct drm_i915_error_state *error,
 705                                   unsigned ring)
 706 {
 707         seq_printf(m, "%s command stream:\n", ring_str(ring));
 708         seq_printf(m, "  HEAD: 0x%08x\n", error->head[ring]);
 709         seq_printf(m, "  TAIL: 0x%08x\n", error->tail[ring]);
 710         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd[ring]);
 711         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir[ring]);
 712         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr[ring]);
 713         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone[ring]);
 714         if (ring == RCS && INTEL_INFO(dev)->gen >= 4) {
 715                 seq_printf(m, "  INSTDONE1: 0x%08x\n", error->instdone1);
 716                 seq_printf(m, "  BBADDR: 0x%08llx\n", error->bbaddr);
 717         }
 718         if (INTEL_INFO(dev)->gen >= 4)
 719                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps[ring]);
 720         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm[ring]);
 721         if (INTEL_INFO(dev)->gen >= 6) {
 722                 seq_printf(m, "  FADDR: 0x%08x\n", error->faddr[ring]);
 723                 seq_printf(m, "  FAULT_REG: 0x%08x\n", error->fault_reg[ring]);
 724                 seq_printf(m, "  SYNC_0: 0x%08x\n",
 725                            error->semaphore_mboxes[ring][0]);
 726                 seq_printf(m, "  SYNC_1: 0x%08x\n",
 727                            error->semaphore_mboxes[ring][1]);
 728         }
 729         seq_printf(m, "  seqno: 0x%08x\n", error->seqno[ring]);
 730         seq_printf(m, "  ring->head: 0x%08x\n", error->cpu_ring_head[ring]);
 731         seq_printf(m, "  ring->tail: 0x%08x\n", error->cpu_ring_tail[ring]);
 732 }
 733
 734 static int i915_error_state(struct seq_file *m, void *unused)
 735 {
 736         struct drm_info_node *node = (struct drm_info_node *) m->private;
 737         struct drm_device *dev = node->minor->dev;
 738         drm_i915_private_t *dev_priv = dev->dev_private;
 739         struct drm_i915_error_state *error;
 740         unsigned long flags;
 741         int i, j, page, offset, elt;
 742
 743         spin_lock_irqsave(&dev_priv->error_lock, flags);
 744         if (!dev_priv->first_error) {
 745                 seq_printf(m, "no error state collected\n");
 746                 goto out;
 747         }
 748
 749         error = dev_priv->first_error;
 750
 751         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 752                    error->time.tv_usec);
 753         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
 754         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 755         seq_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 756
 757         for (i = 0; i < dev_priv->num_fence_regs; i++)
 758                 seq_printf(m, "  fence[%d] = %08llx\n", i, error->fence[i]);
 759
 760         if (INTEL_INFO(dev)->gen >= 6) {
 761                 seq_printf(m, "ERROR: 0x%08x\n", error->error);
 762                 seq_printf(m, "DONE_REG: 0x%08x\n", error->done_reg);
 763         }
 764
 765         i915_ring_error_state(m, dev, error, RCS);
 766         if (HAS_BLT(dev))
 767                 i915_ring_error_state(m, dev, error, BCS);
 768         if (HAS_BSD(dev))
 769                 i915_ring_error_state(m, dev, error, VCS);
 770
 771         if (error->active_bo)
 772                 print_error_buffers(m, "Active",
 773                                     error->active_bo,
 774                                     error->active_bo_count);
 775
 776         if (error->pinned_bo)
 777                 print_error_buffers(m, "Pinned",
 778                                     error->pinned_bo,
 779                                     error->pinned_bo_count);
 780
 781         for (i = 0; i < ARRAY_SIZE(error->ring); i++) {
 782                 struct drm_i915_error_object *obj;
 783
 784                 if ((obj = error->ring[i].batchbuffer)) {
 785                         seq_printf(m, "%s --- gtt_offset = 0x%08x\n",
 786                                    dev_priv->ring[i].name,
 787                                    obj->gtt_offset);
 788                         offset = 0;
 789                         for (page = 0; page < obj->page_count; page++) {
 790                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 791                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 792                                         offset += 4;
 793                                 }
 794                         }
 795                 }
 796
 797                 if (error->ring[i].num_requests) {
 798                         seq_printf(m, "%s --- %d requests\n",
 799                                    dev_priv->ring[i].name,
 800                                    error->ring[i].num_requests);
 801                         for (j = 0; j < error->ring[i].num_requests; j++) {
 802                                 seq_printf(m, "  seqno 0x%08x, emitted %ld, tail 0x%08x\n",
 803                                            error->ring[i].requests[j].seqno,
 804                                            error->ring[i].requests[j].jiffies,
 805                                            error->ring[i].requests[j].tail);
 806                         }
 807                 }
 808
 809                 if ((obj = error->ring[i].ringbuffer)) {
 810                         seq_printf(m, "%s --- ringbuffer = 0x%08x\n",
 811                                    dev_priv->ring[i].name,
 812                                    obj->gtt_offset);
 813                         offset = 0;
 814                         for (page = 0; page < obj->page_count; page++) {
 815                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 816                                         seq_printf(m, "%08x :  %08x\n",
 817                                                    offset,
 818                                                    obj->pages[page][elt]);
 819                                         offset += 4;
 820                                 }
 821                         }
 822                 }
 823         }
 824
 825         if (error->overlay)
 826                 intel_overlay_print_error_state(m, error->overlay);
 827
 828         if (error->display)
 829                 intel_display_print_error_state(m, dev, error->display);
 830
 831 out:
 832         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
 833
 834         return 0;
 835 }
 836
 837 static int i915_rstdby_delays(struct seq_file *m, void *unused)
 838 {
 839         struct drm_info_node *node = (struct drm_info_node *) m->private;
 840         struct drm_device *dev = node->minor->dev;
 841         drm_i915_private_t *dev_priv = dev->dev_private;
 842         u16 crstanddelay;
 843         int ret;
 844
 845         ret = mutex_lock_interruptible(&dev->struct_mutex);
 846         if (ret)
 847                 return ret;
 848
 849         crstanddelay = I915_READ16(CRSTANDVID);
 850
 851         mutex_unlock(&dev->struct_mutex);
 852
 853         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
 854
 855         return 0;
 856 }
 857
 858 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
 859 {
 860         struct drm_info_node *node = (struct drm_info_node *) m->private;
 861         struct drm_device *dev = node->minor->dev;
 862         drm_i915_private_t *dev_priv = dev->dev_private;
 863         int ret;
 864
 865         if (IS_GEN5(dev)) {
 866                 u16 rgvswctl = I915_READ16(MEMSWCTL);
 867                 u16 rgvstat = I915_READ16(MEMSTAT_ILK);
 868
 869                 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 870                 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
 871                 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 872                            MEMSTAT_VID_SHIFT);
 873                 seq_printf(m, "Current P-state: %d\n",
 874                            (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
 875         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
 876                 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
 877                 u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
 878                 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
 879                 u32 rpstat;
 880                 u32 rpupei, rpcurup, rpprevup;
 881                 u32 rpdownei, rpcurdown, rpprevdown;
 882                 int max_freq;
 883
 884                 /* RPSTAT1 is in the GT power well */
 885                 ret = mutex_lock_interruptible(&dev->struct_mutex);
 886                 if (ret)
 887                         return ret;
 888
 889                 gen6_gt_force_wake_get(dev_priv);
 890
 891                 rpstat = I915_READ(GEN6_RPSTAT1);
 892                 rpupei = I915_READ(GEN6_RP_CUR_UP_EI);
 893                 rpcurup = I915_READ(GEN6_RP_CUR_UP);
 894                 rpprevup = I915_READ(GEN6_RP_PREV_UP);
 895                 rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI);
 896                 rpcurdown = I915_READ(GEN6_RP_CUR_DOWN);
 897                 rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
 898
 899                 gen6_gt_force_wake_put(dev_priv);
 900                 mutex_unlock(&dev->struct_mutex);
 901
 902                 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
 903                 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
 904                 seq_printf(m, "Render p-state ratio: %d\n",
 905                            (gt_perf_status & 0xff00) >> 8);
 906                 seq_printf(m, "Render p-state VID: %d\n",
 907                            gt_perf_status & 0xff);
 908                 seq_printf(m, "Render p-state limit: %d\n",
 909                            rp_state_limits & 0xff);
 910                 seq_printf(m, "CAGF: %dMHz\n", ((rpstat & GEN6_CAGF_MASK) >>
 911                                                 GEN6_CAGF_SHIFT) * 50);
 912                 seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
 913                            GEN6_CURICONT_MASK);
 914                 seq_printf(m, "RP CUR UP: %dus\n", rpcurup &
 915                            GEN6_CURBSYTAVG_MASK);
 916                 seq_printf(m, "RP PREV UP: %dus\n", rpprevup &
 917                            GEN6_CURBSYTAVG_MASK);
 918                 seq_printf(m, "RP CUR DOWN EI: %dus\n", rpdownei &
 919                            GEN6_CURIAVG_MASK);
 920                 seq_printf(m, "RP CUR DOWN: %dus\n", rpcurdown &
 921                            GEN6_CURBSYTAVG_MASK);
 922                 seq_printf(m, "RP PREV DOWN: %dus\n", rpprevdown &
 923                            GEN6_CURBSYTAVG_MASK);
 924
 925                 max_freq = (rp_state_cap & 0xff0000) >> 16;
 926                 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
 927                            max_freq * 50);
 928
 929                 max_freq = (rp_state_cap & 0xff00) >> 8;
 930                 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
 931                            max_freq * 50);
 932
 933                 max_freq = rp_state_cap & 0xff;
 934                 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
 935                            max_freq * 50);
 936         } else {
 937                 seq_printf(m, "no P-state info available\n");
 938         }
 939
 940         return 0;
 941 }
 942
 943 static int i915_delayfreq_table(struct seq_file *m, void *unused)
 944 {
 945         struct drm_info_node *node = (struct drm_info_node *) m->private;
 946         struct drm_device *dev = node->minor->dev;
 947         drm_i915_private_t *dev_priv = dev->dev_private;
 948         u32 delayfreq;
 949         int ret, i;
 950
 951         ret = mutex_lock_interruptible(&dev->struct_mutex);
 952         if (ret)
 953                 return ret;
 954
 955         for (i = 0; i < 16; i++) {
 956                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
 957                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
 958                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
 959         }
 960
 961         mutex_unlock(&dev->struct_mutex);
 962
 963         return 0;
 964 }
 965
 966 static inline int MAP_TO_MV(int map)
 967 {
 968         return 1250 - (map * 25);
 969 }
 970
 971 static int i915_inttoext_table(struct seq_file *m, void *unused)
 972 {
 973         struct drm_info_node *node = (struct drm_info_node *) m->private;
 974         struct drm_device *dev = node->minor->dev;
 975         drm_i915_private_t *dev_priv = dev->dev_private;
 976         u32 inttoext;
 977         int ret, i;
 978
 979         ret = mutex_lock_interruptible(&dev->struct_mutex);
 980         if (ret)
 981                 return ret;
 982
 983         for (i = 1; i <= 32; i++) {
 984                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
 985                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
 986         }
 987
 988         mutex_unlock(&dev->struct_mutex);
 989
 990         return 0;
 991 }
 992
 993 static int ironlake_drpc_info(struct seq_file *m)
 994 {
 995         struct drm_info_node *node = (struct drm_info_node *) m->private;
 996         struct drm_device *dev = node->minor->dev;
 997         drm_i915_private_t *dev_priv = dev->dev_private;
 998         u32 rgvmodectl, rstdbyctl;
 999         u16 crstandvid;
1000         int ret;
1001
1002         ret = mutex_lock_interruptible(&dev->struct_mutex);
1003         if (ret)
1004                 return ret;
1005
1006         rgvmodectl = I915_READ(MEMMODECTL);
1007         rstdbyctl = I915_READ(RSTDBYCTL);
1008         crstandvid = I915_READ16(CRSTANDVID);
1009
1010         mutex_unlock(&dev->struct_mutex);
1011
1012         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
1013                    "yes" : "no");
1014         seq_printf(m, "Boost freq: %d\n",
1015                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
1016                    MEMMODE_BOOST_FREQ_SHIFT);
1017         seq_printf(m, "HW control enabled: %s\n",
1018                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
1019         seq_printf(m, "SW control enabled: %s\n",
1020                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
1021         seq_printf(m, "Gated voltage change: %s\n",
1022                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
1023         seq_printf(m, "Starting frequency: P%d\n",
1024                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
1025         seq_printf(m, "Max P-state: P%d\n",
1026                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
1027         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
1028         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
1029         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
1030         seq_printf(m, "Render standby enabled: %s\n",
1031                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
1032         seq_printf(m, "Current RS state: ");
1033         switch (rstdbyctl & RSX_STATUS_MASK) {
1034         case RSX_STATUS_ON:
1035                 seq_printf(m, "on\n");
1036                 break;
1037         case RSX_STATUS_RC1:
1038                 seq_printf(m, "RC1\n");
1039                 break;
1040         case RSX_STATUS_RC1E:
1041                 seq_printf(m, "RC1E\n");
1042                 break;
1043         case RSX_STATUS_RS1:
1044                 seq_printf(m, "RS1\n");
1045                 break;
1046         case RSX_STATUS_RS2:
1047                 seq_printf(m, "RS2 (RC6)\n");
1048                 break;
1049         case RSX_STATUS_RS3:
1050                 seq_printf(m, "RC3 (RC6+)\n");
1051                 break;
1052         default:
1053                 seq_printf(m, "unknown\n");
1054                 break;
1055         }
1056
1057         return 0;
1058 }
1059
1060 static int gen6_drpc_info(struct seq_file *m)
1061 {
1062
1063         struct drm_info_node *node = (struct drm_info_node *) m->private;
1064         struct drm_device *dev = node->minor->dev;
1065         struct drm_i915_private *dev_priv = dev->dev_private;
1066         u32 rpmodectl1, gt_core_status, rcctl1;
1067         unsigned forcewake_count;
1068         int count=0, ret;
1069
1070
1071         ret = mutex_lock_interruptible(&dev->struct_mutex);
1072         if (ret)
1073                 return ret;
1074
1075         spin_lock_irq(&dev_priv->gt_lock);
1076         forcewake_count = dev_priv->forcewake_count;
1077         spin_unlock_irq(&dev_priv->gt_lock);
1078
1079         if (forcewake_count) {
1080                 seq_printf(m, "RC information inaccurate because somebody "
1081                               "holds a forcewake reference \n");
1082         } else {
1083                 /* NB: we cannot use forcewake, else we read the wrong values */
1084                 while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK) & 1))
1085                         udelay(10);
1086                 seq_printf(m, "RC information accurate: %s\n", yesno(count < 51));
1087         }
1088
1089         gt_core_status = readl(dev_priv->regs + GEN6_GT_CORE_STATUS);
1090         trace_i915_reg_rw(false, GEN6_GT_CORE_STATUS, gt_core_status, 4);
1091
1092         rpmodectl1 = I915_READ(GEN6_RP_CONTROL);
1093         rcctl1 = I915_READ(GEN6_RC_CONTROL);
1094         mutex_unlock(&dev->struct_mutex);
1095
1096         seq_printf(m, "Video Turbo Mode: %s\n",
1097                    yesno(rpmodectl1 & GEN6_RP_MEDIA_TURBO));
1098         seq_printf(m, "HW control enabled: %s\n",
1099                    yesno(rpmodectl1 & GEN6_RP_ENABLE));
1100         seq_printf(m, "SW control enabled: %s\n",
1101                    yesno((rpmodectl1 & GEN6_RP_MEDIA_MODE_MASK) ==
1102                           GEN6_RP_MEDIA_SW_MODE));
1103         seq_printf(m, "RC1e Enabled: %s\n",
1104                    yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
1105         seq_printf(m, "RC6 Enabled: %s\n",
1106                    yesno(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
1107         seq_printf(m, "Deep RC6 Enabled: %s\n",
1108                    yesno(rcctl1 & GEN6_RC_CTL_RC6p_ENABLE));
1109         seq_printf(m, "Deepest RC6 Enabled: %s\n",
1110                    yesno(rcctl1 & GEN6_RC_CTL_RC6pp_ENABLE));
1111         seq_printf(m, "Current RC state: ");
1112         switch (gt_core_status & GEN6_RCn_MASK) {
1113         case GEN6_RC0:
1114                 if (gt_core_status & GEN6_CORE_CPD_STATE_MASK)
1115                         seq_printf(m, "Core Power Down\n");
1116                 else
1117                         seq_printf(m, "on\n");
1118                 break;
1119         case GEN6_RC3:
1120                 seq_printf(m, "RC3\n");
1121                 break;
1122         case GEN6_RC6:
1123                 seq_printf(m, "RC6\n");
1124                 break;
1125         case GEN6_RC7:
1126                 seq_printf(m, "RC7\n");
1127                 break;
1128         default:
1129                 seq_printf(m, "Unknown\n");
1130                 break;
1131         }
1132
1133         seq_printf(m, "Core Power Down: %s\n",
1134                    yesno(gt_core_status & GEN6_CORE_CPD_STATE_MASK));
1135         return 0;
1136 }
1137
1138 static int i915_drpc_info(struct seq_file *m, void *unused)
1139 {
1140         struct drm_info_node *node = (struct drm_info_node *) m->private;
1141         struct drm_device *dev = node->minor->dev;
1142
1143         if (IS_GEN6(dev) || IS_GEN7(dev))
1144                 return gen6_drpc_info(m);
1145         else
1146                 return ironlake_drpc_info(m);
1147 }
1148
1149 static int i915_fbc_status(struct seq_file *m, void *unused)
1150 {
1151         struct drm_info_node *node = (struct drm_info_node *) m->private;
1152         struct drm_device *dev = node->minor->dev;
1153         drm_i915_private_t *dev_priv = dev->dev_private;
1154
1155         if (!I915_HAS_FBC(dev)) {
1156                 seq_printf(m, "FBC unsupported on this chipset\n");
1157                 return 0;
1158         }
1159
1160         if (intel_fbc_enabled(dev)) {
1161                 seq_printf(m, "FBC enabled\n");
1162         } else {
1163                 seq_printf(m, "FBC disabled: ");
1164                 switch (dev_priv->no_fbc_reason) {
1165                 case FBC_NO_OUTPUT:
1166                         seq_printf(m, "no outputs");
1167                         break;
1168                 case FBC_STOLEN_TOO_SMALL:
1169                         seq_printf(m, "not enough stolen memory");
1170                         break;
1171                 case FBC_UNSUPPORTED_MODE:
1172                         seq_printf(m, "mode not supported");
1173                         break;
1174                 case FBC_MODE_TOO_LARGE:
1175                         seq_printf(m, "mode too large");
1176                         break;
1177                 case FBC_BAD_PLANE:
1178                         seq_printf(m, "FBC unsupported on plane");
1179                         break;
1180                 case FBC_NOT_TILED:
1181                         seq_printf(m, "scanout buffer not tiled");
1182                         break;
1183                 case FBC_MULTIPLE_PIPES:
1184                         seq_printf(m, "multiple pipes are enabled");
1185                         break;
1186                 case FBC_MODULE_PARAM:
1187                         seq_printf(m, "disabled per module param (default off)");
1188                         break;
1189                 default:
1190                         seq_printf(m, "unknown reason");
1191                 }
1192                 seq_printf(m, "\n");
1193         }
1194         return 0;
1195 }
1196
1197 static int i915_sr_status(struct seq_file *m, void *unused)
1198 {
1199         struct drm_info_node *node = (struct drm_info_node *) m->private;
1200         struct drm_device *dev = node->minor->dev;
1201         drm_i915_private_t *dev_priv = dev->dev_private;
1202         bool sr_enabled = false;
1203
1204         if (HAS_PCH_SPLIT(dev))
1205                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1206         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
1207                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1208         else if (IS_I915GM(dev))
1209                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1210         else if (IS_PINEVIEW(dev))
1211                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1212
1213         seq_printf(m, "self-refresh: %s\n",
1214                    sr_enabled ? "enabled" : "disabled");
1215
1216         return 0;
1217 }
1218
1219 static int i915_emon_status(struct seq_file *m, void *unused)
1220 {
1221         struct drm_info_node *node = (struct drm_info_node *) m->private;
1222         struct drm_device *dev = node->minor->dev;
1223         drm_i915_private_t *dev_priv = dev->dev_private;
1224         unsigned long temp, chipset, gfx;
1225         int ret;
1226
1227         ret = mutex_lock_interruptible(&dev->struct_mutex);
1228         if (ret)
1229                 return ret;
1230
1231         temp = i915_mch_val(dev_priv);
1232         chipset = i915_chipset_val(dev_priv);
1233         gfx = i915_gfx_val(dev_priv);
1234         mutex_unlock(&dev->struct_mutex);
1235
1236         seq_printf(m, "GMCH temp: %ld\n", temp);
1237         seq_printf(m, "Chipset power: %ld\n", chipset);
1238         seq_printf(m, "GFX power: %ld\n", gfx);
1239         seq_printf(m, "Total power: %ld\n", chipset + gfx);
1240
1241         return 0;
1242 }
1243
1244 static int i915_ring_freq_table(struct seq_file *m, void *unused)
1245 {
1246         struct drm_info_node *node = (struct drm_info_node *) m->private;
1247         struct drm_device *dev = node->minor->dev;
1248         drm_i915_private_t *dev_priv = dev->dev_private;
1249         int ret;
1250         int gpu_freq, ia_freq;
1251
1252         if (!(IS_GEN6(dev) || IS_GEN7(dev))) {
1253                 seq_printf(m, "unsupported on this chipset\n");
1254                 return 0;
1255         }
1256
1257         ret = mutex_lock_interruptible(&dev->struct_mutex);
1258         if (ret)
1259                 return ret;
1260
1261         seq_printf(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\n");
1262
1263         for (gpu_freq = dev_priv->min_delay; gpu_freq <= dev_priv->max_delay;
1264              gpu_freq++) {
1265                 I915_WRITE(GEN6_PCODE_DATA, gpu_freq);
1266                 I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY |
1267                            GEN6_PCODE_READ_MIN_FREQ_TABLE);
1268                 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) &
1269                               GEN6_PCODE_READY) == 0, 10)) {
1270                         DRM_ERROR("pcode read of freq table timed out\n");
1271                         continue;
1272                 }
1273                 ia_freq = I915_READ(GEN6_PCODE_DATA);
1274                 seq_printf(m, "%d\t\t%d\n", gpu_freq * 50, ia_freq * 100);
1275         }
1276
1277         mutex_unlock(&dev->struct_mutex);
1278
1279         return 0;
1280 }
1281
1282 static int i915_gfxec(struct seq_file *m, void *unused)
1283 {
1284         struct drm_info_node *node = (struct drm_info_node *) m->private;
1285         struct drm_device *dev = node->minor->dev;
1286         drm_i915_private_t *dev_priv = dev->dev_private;
1287         int ret;
1288
1289         ret = mutex_lock_interruptible(&dev->struct_mutex);
1290         if (ret)
1291                 return ret;
1292
1293         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
1294
1295         mutex_unlock(&dev->struct_mutex);
1296
1297         return 0;
1298 }
1299
1300 static int i915_opregion(struct seq_file *m, void *unused)
1301 {
1302         struct drm_info_node *node = (struct drm_info_node *) m->private;
1303         struct drm_device *dev = node->minor->dev;
1304         drm_i915_private_t *dev_priv = dev->dev_private;
1305         struct intel_opregion *opregion = &dev_priv->opregion;
1306         int ret;
1307
1308         ret = mutex_lock_interruptible(&dev->struct_mutex);
1309         if (ret)
1310                 return ret;
1311
1312         if (opregion->header)
1313                 seq_write(m, opregion->header, OPREGION_SIZE);
1314
1315         mutex_unlock(&dev->struct_mutex);
1316
1317         return 0;
1318 }
1319
1320 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
1321 {
1322         struct drm_info_node *node = (struct drm_info_node *) m->private;
1323         struct drm_device *dev = node->minor->dev;
1324         drm_i915_private_t *dev_priv = dev->dev_private;
1325         struct intel_fbdev *ifbdev;
1326         struct intel_framebuffer *fb;
1327         int ret;
1328
1329         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1330         if (ret)
1331                 return ret;
1332
1333         ifbdev = dev_priv->fbdev;
1334         fb = to_intel_framebuffer(ifbdev->helper.fb);
1335
1336         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
1337                    fb->base.width,
1338                    fb->base.height,
1339                    fb->base.depth,
1340                    fb->base.bits_per_pixel);
1341         describe_obj(m, fb->obj);
1342         seq_printf(m, "\n");
1343
1344         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
1345                 if (&fb->base == ifbdev->helper.fb)
1346                         continue;
1347
1348                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
1349                            fb->base.width,
1350                            fb->base.height,
1351                            fb->base.depth,
1352                            fb->base.bits_per_pixel);
1353                 describe_obj(m, fb->obj);
1354                 seq_printf(m, "\n");
1355         }
1356
1357         mutex_unlock(&dev->mode_config.mutex);
1358
1359         return 0;
1360 }
1361
1362 static int i915_context_status(struct seq_file *m, void *unused)
1363 {
1364         struct drm_info_node *node = (struct drm_info_node *) m->private;
1365         struct drm_device *dev = node->minor->dev;
1366         drm_i915_private_t *dev_priv = dev->dev_private;
1367         int ret;
1368
1369         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1370         if (ret)
1371                 return ret;
1372
1373         if (dev_priv->pwrctx) {
1374                 seq_printf(m, "power context ");
1375                 describe_obj(m, dev_priv->pwrctx);
1376                 seq_printf(m, "\n");
1377         }
1378
1379         if (dev_priv->renderctx) {
1380                 seq_printf(m, "render context ");
1381                 describe_obj(m, dev_priv->renderctx);
1382                 seq_printf(m, "\n");
1383         }
1384
1385         mutex_unlock(&dev->mode_config.mutex);
1386
1387         return 0;
1388 }
1389
1390 static int i915_gen6_forcewake_count_info(struct seq_file *m, void *data)
1391 {
1392         struct drm_info_node *node = (struct drm_info_node *) m->private;
1393         struct drm_device *dev = node->minor->dev;
1394         struct drm_i915_private *dev_priv = dev->dev_private;
1395         unsigned forcewake_count;
1396
1397         spin_lock_irq(&dev_priv->gt_lock);
1398         forcewake_count = dev_priv->forcewake_count;
1399         spin_unlock_irq(&dev_priv->gt_lock);
1400
1401         seq_printf(m, "forcewake count = %u\n", forcewake_count);
1402
1403         return 0;
1404 }
1405
1406 static const char *swizzle_string(unsigned swizzle)
1407 {
1408         switch(swizzle) {
1409         case I915_BIT_6_SWIZZLE_NONE:
1410                 return "none";
1411         case I915_BIT_6_SWIZZLE_9:
1412                 return "bit9";
1413         case I915_BIT_6_SWIZZLE_9_10:
1414                 return "bit9/bit10";
1415         case I915_BIT_6_SWIZZLE_9_11:
1416                 return "bit9/bit11";
1417         case I915_BIT_6_SWIZZLE_9_10_11:
1418                 return "bit9/bit10/bit11";
1419         case I915_BIT_6_SWIZZLE_9_17:
1420                 return "bit9/bit17";
1421         case I915_BIT_6_SWIZZLE_9_10_17:
1422                 return "bit9/bit10/bit17";
1423         case I915_BIT_6_SWIZZLE_UNKNOWN:
1424                 return "unkown";
1425         }
1426
1427         return "bug";
1428 }
1429
1430 static int i915_swizzle_info(struct seq_file *m, void *data)
1431 {
1432         struct drm_info_node *node = (struct drm_info_node *) m->private;
1433         struct drm_device *dev = node->minor->dev;
1434         struct drm_i915_private *dev_priv = dev->dev_private;
1435
1436         mutex_lock(&dev->struct_mutex);
1437         seq_printf(m, "bit6 swizzle for X-tiling = %s\n",
1438                    swizzle_string(dev_priv->mm.bit_6_swizzle_x));
1439         seq_printf(m, "bit6 swizzle for Y-tiling = %s\n",
1440                    swizzle_string(dev_priv->mm.bit_6_swizzle_y));
1441
1442         if (IS_GEN3(dev) || IS_GEN4(dev)) {
1443                 seq_printf(m, "DDC = 0x%08x\n",
1444                            I915_READ(DCC));
1445                 seq_printf(m, "C0DRB3 = 0x%04x\n",
1446                            I915_READ16(C0DRB3));
1447                 seq_printf(m, "C1DRB3 = 0x%04x\n",
1448                            I915_READ16(C1DRB3));
1449         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
1450                 seq_printf(m, "MAD_DIMM_C0 = 0x%08x\n",
1451                            I915_READ(MAD_DIMM_C0));
1452                 seq_printf(m, "MAD_DIMM_C1 = 0x%08x\n",
1453                            I915_READ(MAD_DIMM_C1));
1454                 seq_printf(m, "MAD_DIMM_C2 = 0x%08x\n",
1455                            I915_READ(MAD_DIMM_C2));
1456                 seq_printf(m, "TILECTL = 0x%08x\n",
1457                            I915_READ(TILECTL));
1458                 seq_printf(m, "ARB_MODE = 0x%08x\n",
1459                            I915_READ(ARB_MODE));
1460                 seq_printf(m, "DISP_ARB_CTL = 0x%08x\n",
1461                            I915_READ(DISP_ARB_CTL));
1462         }
1463         mutex_unlock(&dev->struct_mutex);
1464
1465         return 0;
1466 }
1467
1468 static int i915_ppgtt_info(struct seq_file *m, void *data)
1469 {
1470         struct drm_info_node *node = (struct drm_info_node *) m->private;
1471         struct drm_device *dev = node->minor->dev;
1472         struct drm_i915_private *dev_priv = dev->dev_private;
1473         struct intel_ring_buffer *ring;
1474         int i, ret;
1475
1476
1477         ret = mutex_lock_interruptible(&dev->struct_mutex);
1478         if (ret)
1479                 return ret;
1480         if (INTEL_INFO(dev)->gen == 6)
1481                 seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(GFX_MODE));
1482
1483         for (i = 0; i < I915_NUM_RINGS; i++) {
1484                 ring = &dev_priv->ring[i];
1485
1486                 seq_printf(m, "%s\n", ring->name);
1487                 if (INTEL_INFO(dev)->gen == 7)
1488                         seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(RING_MODE_GEN7(ring)));
1489                 seq_printf(m, "PP_DIR_BASE: 0x%08x\n", I915_READ(RING_PP_DIR_BASE(ring)));
1490                 seq_printf(m, "PP_DIR_BASE_READ: 0x%08x\n", I915_READ(RING_PP_DIR_BASE_READ(ring)));
1491                 seq_printf(m, "PP_DIR_DCLV: 0x%08x\n", I915_READ(RING_PP_DIR_DCLV(ring)));
1492         }
1493         if (dev_priv->mm.aliasing_ppgtt) {
1494                 struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt;
1495
1496                 seq_printf(m, "aliasing PPGTT:\n");
1497                 seq_printf(m, "pd gtt offset: 0x%08x\n", ppgtt->pd_offset);
1498         }
1499         seq_printf(m, "ECOCHK: 0x%08x\n", I915_READ(GAM_ECOCHK));
1500         mutex_unlock(&dev->struct_mutex);
1501
1502         return 0;
1503 }
1504
1505 static int
1506 i915_debugfs_common_open(struct inode *inode,
1507                          struct file *filp)
1508 {
1509         filp->private_data = inode->i_private;
1510         return 0;
1511 }
1512
1513 static ssize_t
1514 i915_wedged_read(struct file *filp,
1515                  char __user *ubuf,
1516                  size_t max,
1517                  loff_t *ppos)
1518 {
1519         struct drm_device *dev = filp->private_data;
1520         drm_i915_private_t *dev_priv = dev->dev_private;
1521         char buf[80];
1522         int len;
1523
1524         len = snprintf(buf, sizeof(buf),
1525                        "wedged :  %d\n",
1526                        atomic_read(&dev_priv->mm.wedged));
1527
1528         if (len > sizeof(buf))
1529                 len = sizeof(buf);
1530
1531         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1532 }
1533
1534 static ssize_t
1535 i915_wedged_write(struct file *filp,
1536                   const char __user *ubuf,
1537                   size_t cnt,
1538                   loff_t *ppos)
1539 {
1540         struct drm_device *dev = filp->private_data;
1541         char buf[20];
1542         int val = 1;
1543
1544         if (cnt > 0) {
1545                 if (cnt > sizeof(buf) - 1)
1546                         return -EINVAL;
1547
1548                 if (copy_from_user(buf, ubuf, cnt))
1549                         return -EFAULT;
1550                 buf[cnt] = 0;
1551
1552                 val = simple_strtoul(buf, NULL, 0);
1553         }
1554
1555         DRM_INFO("Manually setting wedged to %d\n", val);
1556         i915_handle_error(dev, val);
1557
1558         return cnt;
1559 }
1560
1561 static const struct file_operations i915_wedged_fops = {
1562         .owner = THIS_MODULE,
1563         .open = i915_debugfs_common_open,
1564         .read = i915_wedged_read,
1565         .write = i915_wedged_write,
1566         .llseek = default_llseek,
1567 };
1568
1569 static ssize_t
1570 i915_max_freq_read(struct file *filp,
1571                    char __user *ubuf,
1572                    size_t max,
1573                    loff_t *ppos)
1574 {
1575         struct drm_device *dev = filp->private_data;
1576         drm_i915_private_t *dev_priv = dev->dev_private;
1577         char buf[80];
1578         int len;
1579
1580         len = snprintf(buf, sizeof(buf),
1581                        "max freq: %d\n", dev_priv->max_delay * 50);
1582
1583         if (len > sizeof(buf))
1584                 len = sizeof(buf);
1585
1586         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1587 }
1588
1589 static ssize_t
1590 i915_max_freq_write(struct file *filp,
1591                   const char __user *ubuf,
1592                   size_t cnt,
1593                   loff_t *ppos)
1594 {
1595         struct drm_device *dev = filp->private_data;
1596         struct drm_i915_private *dev_priv = dev->dev_private;
1597         char buf[20];
1598         int val = 1;
1599
1600         if (cnt > 0) {
1601                 if (cnt > sizeof(buf) - 1)
1602                         return -EINVAL;
1603
1604                 if (copy_from_user(buf, ubuf, cnt))
1605                         return -EFAULT;
1606                 buf[cnt] = 0;
1607
1608                 val = simple_strtoul(buf, NULL, 0);
1609         }
1610
1611         DRM_DEBUG_DRIVER("Manually setting max freq to %d\n", val);
1612
1613         /*
1614          * Turbo will still be enabled, but won't go above the set value.
1615          */
1616         dev_priv->max_delay = val / 50;
1617
1618         gen6_set_rps(dev, val / 50);
1619
1620         return cnt;
1621 }
1622
1623 static const struct file_operations i915_max_freq_fops = {
1624         .owner = THIS_MODULE,
1625         .open = i915_debugfs_common_open,
1626         .read = i915_max_freq_read,
1627         .write = i915_max_freq_write,
1628         .llseek = default_llseek,
1629 };
1630
1631 static ssize_t
1632 i915_cache_sharing_read(struct file *filp,
1633                    char __user *ubuf,
1634                    size_t max,
1635                    loff_t *ppos)
1636 {
1637         struct drm_device *dev = filp->private_data;
1638         drm_i915_private_t *dev_priv = dev->dev_private;
1639         char buf[80];
1640         u32 snpcr;
1641         int len;
1642
1643         mutex_lock(&dev_priv->dev->struct_mutex);
1644         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1645         mutex_unlock(&dev_priv->dev->struct_mutex);
1646
1647         len = snprintf(buf, sizeof(buf),
1648                        "%d\n", (snpcr & GEN6_MBC_SNPCR_MASK) >>
1649                        GEN6_MBC_SNPCR_SHIFT);
1650
1651         if (len > sizeof(buf))
1652                 len = sizeof(buf);
1653
1654         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1655 }
1656
1657 static ssize_t
1658 i915_cache_sharing_write(struct file *filp,
1659                   const char __user *ubuf,
1660                   size_t cnt,
1661                   loff_t *ppos)
1662 {
1663         struct drm_device *dev = filp->private_data;
1664         struct drm_i915_private *dev_priv = dev->dev_private;
1665         char buf[20];
1666         u32 snpcr;
1667         int val = 1;
1668
1669         if (cnt > 0) {
1670                 if (cnt > sizeof(buf) - 1)
1671                         return -EINVAL;
1672
1673                 if (copy_from_user(buf, ubuf, cnt))
1674                         return -EFAULT;
1675                 buf[cnt] = 0;
1676
1677                 val = simple_strtoul(buf, NULL, 0);
1678         }
1679
1680         if (val < 0 || val > 3)
1681                 return -EINVAL;
1682
1683         DRM_DEBUG_DRIVER("Manually setting uncore sharing to %d\n", val);
1684
1685         /* Update the cache sharing policy here as well */
1686         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1687         snpcr &= ~GEN6_MBC_SNPCR_MASK;
1688         snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
1689         I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
1690
1691         return cnt;
1692 }
1693
1694 static const struct file_operations i915_cache_sharing_fops = {
1695         .owner = THIS_MODULE,
1696         .open = i915_debugfs_common_open,
1697         .read = i915_cache_sharing_read,
1698         .write = i915_cache_sharing_write,
1699         .llseek = default_llseek,
1700 };
1701
1702 /* As the drm_debugfs_init() routines are called before dev->dev_private is
1703  * allocated we need to hook into the minor for release. */
1704 static int
1705 drm_add_fake_info_node(struct drm_minor *minor,
1706                        struct dentry *ent,
1707                        const void *key)
1708 {
1709         struct drm_info_node *node;
1710
1711         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
1712         if (node == NULL) {
1713                 debugfs_remove(ent);
1714                 return -ENOMEM;
1715         }
1716
1717         node->minor = minor;
1718         node->dent = ent;
1719         node->info_ent = (void *) key;
1720
1721         mutex_lock(&minor->debugfs_lock);
1722         list_add(&node->list, &minor->debugfs_list);
1723         mutex_unlock(&minor->debugfs_lock);
1724
1725         return 0;
1726 }
1727
1728 static int i915_forcewake_open(struct inode *inode, struct file *file)
1729 {
1730         struct drm_device *dev = inode->i_private;
1731         struct drm_i915_private *dev_priv = dev->dev_private;
1732         int ret;
1733
1734         if (INTEL_INFO(dev)->gen < 6)
1735                 return 0;
1736
1737         ret = mutex_lock_interruptible(&dev->struct_mutex);
1738         if (ret)
1739                 return ret;
1740         gen6_gt_force_wake_get(dev_priv);
1741         mutex_unlock(&dev->struct_mutex);
1742
1743         return 0;
1744 }
1745
1746 int i915_forcewake_release(struct inode *inode, struct file *file)
1747 {
1748         struct drm_device *dev = inode->i_private;
1749         struct drm_i915_private *dev_priv = dev->dev_private;
1750
1751         if (INTEL_INFO(dev)->gen < 6)
1752                 return 0;
1753
1754         /*
1755          * It's bad that we can potentially hang userspace if struct_mutex gets
1756          * forever stuck.  However, if we cannot acquire this lock it means that
1757          * almost certainly the driver has hung, is not unload-able. Therefore
1758          * hanging here is probably a minor inconvenience not to be seen my
1759          * almost every user.
1760          */
1761         mutex_lock(&dev->struct_mutex);
1762         gen6_gt_force_wake_put(dev_priv);
1763         mutex_unlock(&dev->struct_mutex);
1764
1765         return 0;
1766 }
1767
1768 static const struct file_operations i915_forcewake_fops = {
1769         .owner = THIS_MODULE,
1770         .open = i915_forcewake_open,
1771         .release = i915_forcewake_release,
1772 };
1773
1774 static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
1775 {
1776         struct drm_device *dev = minor->dev;
1777         struct dentry *ent;
1778
1779         ent = debugfs_create_file("i915_forcewake_user",
1780                                   S_IRUSR,
1781                                   root, dev,
1782                                   &i915_forcewake_fops);
1783         if (IS_ERR(ent))
1784                 return PTR_ERR(ent);
1785
1786         return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
1787 }
1788
1789 static int i915_debugfs_create(struct dentry *root,
1790                                struct drm_minor *minor,
1791                                const char *name,
1792                                const struct file_operations *fops)
1793 {
1794         struct drm_device *dev = minor->dev;
1795         struct dentry *ent;
1796
1797         ent = debugfs_create_file(name,
1798                                   S_IRUGO | S_IWUSR,
1799                                   root, dev,
1800                                   fops);
1801         if (IS_ERR(ent))
1802                 return PTR_ERR(ent);
1803
1804         return drm_add_fake_info_node(minor, ent, fops);
1805 }
1806
1807 static struct drm_info_list i915_debugfs_list[] = {
1808         {"i915_capabilities", i915_capabilities, 0},
1809         {"i915_gem_objects", i915_gem_object_info, 0},
1810         {"i915_gem_gtt", i915_gem_gtt_info, 0},
1811         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
1812         {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
1813         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
1814         {"i915_gem_pinned", i915_gem_object_list_info, 0, (void *) PINNED_LIST},
1815         {"i915_gem_deferred_free", i915_gem_object_list_info, 0, (void *) DEFERRED_FREE_LIST},
1816         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
1817         {"i915_gem_request", i915_gem_request_info, 0},
1818         {"i915_gem_seqno", i915_gem_seqno_info, 0},
1819         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
1820         {"i915_gem_interrupt", i915_interrupt_info, 0},
1821         {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
1822         {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
1823         {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
1824         {"i915_ringbuffer_data", i915_ringbuffer_data, 0, (void *)RCS},
1825         {"i915_ringbuffer_info", i915_ringbuffer_info, 0, (void *)RCS},
1826         {"i915_bsd_ringbuffer_data", i915_ringbuffer_data, 0, (void *)VCS},
1827         {"i915_bsd_ringbuffer_info", i915_ringbuffer_info, 0, (void *)VCS},
1828         {"i915_blt_ringbuffer_data", i915_ringbuffer_data, 0, (void *)BCS},
1829         {"i915_blt_ringbuffer_info", i915_ringbuffer_info, 0, (void *)BCS},
1830         {"i915_error_state", i915_error_state, 0},
1831         {"i915_rstdby_delays", i915_rstdby_delays, 0},
1832         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
1833         {"i915_delayfreq_table", i915_delayfreq_table, 0},
1834         {"i915_inttoext_table", i915_inttoext_table, 0},
1835         {"i915_drpc_info", i915_drpc_info, 0},
1836         {"i915_emon_status", i915_emon_status, 0},
1837         {"i915_ring_freq_table", i915_ring_freq_table, 0},
1838         {"i915_gfxec", i915_gfxec, 0},
1839         {"i915_fbc_status", i915_fbc_status, 0},
1840         {"i915_sr_status", i915_sr_status, 0},
1841         {"i915_opregion", i915_opregion, 0},
1842         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
1843         {"i915_context_status", i915_context_status, 0},
1844         {"i915_gen6_forcewake_count", i915_gen6_forcewake_count_info, 0},
1845         {"i915_swizzle_info", i915_swizzle_info, 0},
1846         {"i915_ppgtt_info", i915_ppgtt_info, 0},
1847 };
1848 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
1849
1850 int i915_debugfs_init(struct drm_minor *minor)
1851 {
1852         int ret;
1853
1854         ret = i915_debugfs_create(minor->debugfs_root, minor,
1855                                   "i915_wedged",
1856                                   &i915_wedged_fops);
1857         if (ret)
1858                 return ret;
1859
1860         ret = i915_forcewake_create(minor->debugfs_root, minor);
1861         if (ret)
1862                 return ret;
1863
1864         ret = i915_debugfs_create(minor->debugfs_root, minor,
1865                                   "i915_max_freq",
1866                                   &i915_max_freq_fops);
1867         if (ret)
1868                 return ret;
1869
1870         ret = i915_debugfs_create(minor->debugfs_root, minor,
1871                                   "i915_cache_sharing",
1872                                   &i915_cache_sharing_fops);
1873         if (ret)
1874                 return ret;
1875
1876         return drm_debugfs_create_files(i915_debugfs_list,
1877                                         I915_DEBUGFS_ENTRIES,
1878                                         minor->debugfs_root, minor);
1879 }
1880
1881 void i915_debugfs_cleanup(struct drm_minor *minor)
1882 {
1883         drm_debugfs_remove_files(i915_debugfs_list,
1884                                  I915_DEBUGFS_ENTRIES, minor);
1885         drm_debugfs_remove_files((struct drm_info_list *) &i915_forcewake_fops,
1886                                  1, minor);
1887         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
1888                                  1, minor);
1889         drm_debugfs_remove_files((struct drm_info_list *) &i915_max_freq_fops,
1890                                  1, minor);
1891         drm_debugfs_remove_files((struct drm_info_list *) &i915_cache_sharing_fops,
1892                                  1, minor);
1893 }
1894
1895 #endif /* CONFIG_DEBUG_FS */