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 "drmP.h"
  33 #include "drm.h"
  34 #include "intel_drv.h"
  35 #include "intel_ringbuffer.h"
  36 #include "i915_drm.h"
  37 #include "i915_drv.h"
  38
  39 #define DRM_I915_RING_DEBUG 1
  40
  41
  42 #if defined(CONFIG_DEBUG_FS)
  43
  44 enum {
  45         ACTIVE_LIST,
  46         FLUSHING_LIST,
  47         INACTIVE_LIST,
  48         PINNED_LIST,
  49         DEFERRED_FREE_LIST,
  50 };
  51
  52 static const char *yesno(int v)
  53 {
  54         return v ? "yes" : "no";
  55 }
  56
  57 static int i915_capabilities(struct seq_file *m, void *data)
  58 {
  59         struct drm_info_node *node = (struct drm_info_node *) m->private;
  60         struct drm_device *dev = node->minor->dev;
  61         const struct intel_device_info *info = INTEL_INFO(dev);
  62
  63         seq_printf(m, "gen: %d\n", info->gen);
  64 #define B(x) seq_printf(m, #x ": %s\n", yesno(info->x))
  65         B(is_mobile);
  66         B(is_i85x);
  67         B(is_i915g);
  68         B(is_i945gm);
  69         B(is_g33);
  70         B(need_gfx_hws);
  71         B(is_g4x);
  72         B(is_pineview);
  73         B(is_broadwater);
  74         B(is_crestline);
  75         B(has_fbc);
  76         B(has_pipe_cxsr);
  77         B(has_hotplug);
  78         B(cursor_needs_physical);
  79         B(has_overlay);
  80         B(overlay_needs_physical);
  81         B(supports_tv);
  82         B(has_bsd_ring);
  83         B(has_blt_ring);
  84 #undef B
  85
  86         return 0;
  87 }
  88
  89 static const char *get_pin_flag(struct drm_i915_gem_object *obj)
  90 {
  91         if (obj->user_pin_count > 0)
  92                 return "P";
  93         else if (obj->pin_count > 0)
  94                 return "p";
  95         else
  96                 return " ";
  97 }
  98
  99 static const char *get_tiling_flag(struct drm_i915_gem_object *obj)
 100 {
 101     switch (obj->tiling_mode) {
 102     default:
 103     case I915_TILING_NONE: return " ";
 104     case I915_TILING_X: return "X";
 105     case I915_TILING_Y: return "Y";
 106     }
 107 }
 108
 109 static const char *agp_type_str(int type)
 110 {
 111         switch (type) {
 112         case 0: return " uncached";
 113         case 1: return " snooped";
 114         default: return "";
 115         }
 116 }
 117
 118 static void
 119 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 120 {
 121         seq_printf(m, "%p: %s%s %8zd %04x %04x %d %d%s%s%s",
 122                    &obj->base,
 123                    get_pin_flag(obj),
 124                    get_tiling_flag(obj),
 125                    obj->base.size,
 126                    obj->base.read_domains,
 127                    obj->base.write_domain,
 128                    obj->last_rendering_seqno,
 129                    obj->last_fenced_seqno,
 130                    agp_type_str(obj->agp_type == AGP_USER_CACHED_MEMORY),
 131                    obj->dirty ? " dirty" : "",
 132                    obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
 133         if (obj->base.name)
 134                 seq_printf(m, " (name: %d)", obj->base.name);
 135         if (obj->fence_reg != I915_FENCE_REG_NONE)
 136                 seq_printf(m, " (fence: %d)", obj->fence_reg);
 137         if (obj->gtt_space != NULL)
 138                 seq_printf(m, " (gtt offset: %08x, size: %08x)",
 139                            obj->gtt_offset, (unsigned int)obj->gtt_space->size);
 140         if (obj->pin_mappable || obj->fault_mappable) {
 141                 char s[3], *t = s;
 142                 if (obj->pin_mappable)
 143                         *t++ = 'p';
 144                 if (obj->fault_mappable)
 145                         *t++ = 'f';
 146                 *t = '\0';
 147                 seq_printf(m, " (%s mappable)", s);
 148         }
 149         if (obj->ring != NULL)
 150                 seq_printf(m, " (%s)", obj->ring->name);
 151 }
 152
 153 static int i915_gem_object_list_info(struct seq_file *m, void *data)
 154 {
 155         struct drm_info_node *node = (struct drm_info_node *) m->private;
 156         uintptr_t list = (uintptr_t) node->info_ent->data;
 157         struct list_head *head;
 158         struct drm_device *dev = node->minor->dev;
 159         drm_i915_private_t *dev_priv = dev->dev_private;
 160         struct drm_i915_gem_object *obj;
 161         size_t total_obj_size, total_gtt_size;
 162         int count, ret;
 163
 164         ret = mutex_lock_interruptible(&dev->struct_mutex);
 165         if (ret)
 166                 return ret;
 167
 168         switch (list) {
 169         case ACTIVE_LIST:
 170                 seq_printf(m, "Active:\n");
 171                 head = &dev_priv->mm.active_list;
 172                 break;
 173         case INACTIVE_LIST:
 174                 seq_printf(m, "Inactive:\n");
 175                 head = &dev_priv->mm.inactive_list;
 176                 break;
 177         case PINNED_LIST:
 178                 seq_printf(m, "Pinned:\n");
 179                 head = &dev_priv->mm.pinned_list;
 180                 break;
 181         case FLUSHING_LIST:
 182                 seq_printf(m, "Flushing:\n");
 183                 head = &dev_priv->mm.flushing_list;
 184                 break;
 185         case DEFERRED_FREE_LIST:
 186                 seq_printf(m, "Deferred free:\n");
 187                 head = &dev_priv->mm.deferred_free_list;
 188                 break;
 189         default:
 190                 mutex_unlock(&dev->struct_mutex);
 191                 return -EINVAL;
 192         }
 193
 194         total_obj_size = total_gtt_size = count = 0;
 195         list_for_each_entry(obj, head, mm_list) {
 196                 seq_printf(m, "   ");
 197                 describe_obj(m, obj);
 198                 seq_printf(m, "\n");
 199                 total_obj_size += obj->base.size;
 200                 total_gtt_size += obj->gtt_space->size;
 201                 count++;
 202         }
 203         mutex_unlock(&dev->struct_mutex);
 204
 205         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 206                    count, total_obj_size, total_gtt_size);
 207         return 0;
 208 }
 209
 210 #define count_objects(list, member) do { \
 211         list_for_each_entry(obj, list, member) { \
 212                 size += obj->gtt_space->size; \
 213                 ++count; \
 214                 if (obj->map_and_fenceable) { \
 215                         mappable_size += obj->gtt_space->size; \
 216                         ++mappable_count; \
 217                 } \
 218         } \
 219 } while(0)
 220
 221 static int i915_gem_object_info(struct seq_file *m, void* data)
 222 {
 223         struct drm_info_node *node = (struct drm_info_node *) m->private;
 224         struct drm_device *dev = node->minor->dev;
 225         struct drm_i915_private *dev_priv = dev->dev_private;
 226         u32 count, mappable_count;
 227         size_t size, mappable_size;
 228         struct drm_i915_gem_object *obj;
 229         int ret;
 230
 231         ret = mutex_lock_interruptible(&dev->struct_mutex);
 232         if (ret)
 233                 return ret;
 234
 235         seq_printf(m, "%u objects, %zu bytes\n",
 236                    dev_priv->mm.object_count,
 237                    dev_priv->mm.object_memory);
 238
 239         size = count = mappable_size = mappable_count = 0;
 240         count_objects(&dev_priv->mm.gtt_list, gtt_list);
 241         seq_printf(m, "%u [%u] objects, %zu [%zu] bytes in gtt\n",
 242                    count, mappable_count, size, mappable_size);
 243
 244         size = count = mappable_size = mappable_count = 0;
 245         count_objects(&dev_priv->mm.active_list, mm_list);
 246         count_objects(&dev_priv->mm.flushing_list, mm_list);
 247         seq_printf(m, "  %u [%u] active objects, %zu [%zu] bytes\n",
 248                    count, mappable_count, size, mappable_size);
 249
 250         size = count = mappable_size = mappable_count = 0;
 251         count_objects(&dev_priv->mm.pinned_list, mm_list);
 252         seq_printf(m, "  %u [%u] pinned objects, %zu [%zu] bytes\n",
 253                    count, mappable_count, size, mappable_size);
 254
 255         size = count = mappable_size = mappable_count = 0;
 256         count_objects(&dev_priv->mm.inactive_list, mm_list);
 257         seq_printf(m, "  %u [%u] inactive objects, %zu [%zu] bytes\n",
 258                    count, mappable_count, size, mappable_size);
 259
 260         size = count = mappable_size = mappable_count = 0;
 261         count_objects(&dev_priv->mm.deferred_free_list, mm_list);
 262         seq_printf(m, "  %u [%u] freed objects, %zu [%zu] bytes\n",
 263                    count, mappable_count, size, mappable_size);
 264
 265         size = count = mappable_size = mappable_count = 0;
 266         list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
 267                 if (obj->fault_mappable) {
 268                         size += obj->gtt_space->size;
 269                         ++count;
 270                 }
 271                 if (obj->pin_mappable) {
 272                         mappable_size += obj->gtt_space->size;
 273                         ++mappable_count;
 274                 }
 275         }
 276         seq_printf(m, "%u pinned mappable objects, %zu bytes\n",
 277                    mappable_count, mappable_size);
 278         seq_printf(m, "%u fault mappable objects, %zu bytes\n",
 279                    count, size);
 280
 281         seq_printf(m, "%zu [%zu] gtt total\n",
 282                    dev_priv->mm.gtt_total, dev_priv->mm.mappable_gtt_total);
 283
 284         mutex_unlock(&dev->struct_mutex);
 285
 286         return 0;
 287 }
 288
 289 static int i915_gem_gtt_info(struct seq_file *m, void* data)
 290 {
 291         struct drm_info_node *node = (struct drm_info_node *) m->private;
 292         struct drm_device *dev = node->minor->dev;
 293         struct drm_i915_private *dev_priv = dev->dev_private;
 294         struct drm_i915_gem_object *obj;
 295         size_t total_obj_size, total_gtt_size;
 296         int count, ret;
 297
 298         ret = mutex_lock_interruptible(&dev->struct_mutex);
 299         if (ret)
 300                 return ret;
 301
 302         total_obj_size = total_gtt_size = count = 0;
 303         list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
 304                 seq_printf(m, "   ");
 305                 describe_obj(m, obj);
 306                 seq_printf(m, "\n");
 307                 total_obj_size += obj->base.size;
 308                 total_gtt_size += obj->gtt_space->size;
 309                 count++;
 310         }
 311
 312         mutex_unlock(&dev->struct_mutex);
 313
 314         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 315                    count, total_obj_size, total_gtt_size);
 316
 317         return 0;
 318 }
 319
 320
 321 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
 322 {
 323         struct drm_info_node *node = (struct drm_info_node *) m->private;
 324         struct drm_device *dev = node->minor->dev;
 325         unsigned long flags;
 326         struct intel_crtc *crtc;
 327
 328         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
 329                 const char *pipe = crtc->pipe ? "B" : "A";
 330                 const char *plane = crtc->plane ? "B" : "A";
 331                 struct intel_unpin_work *work;
 332
 333                 spin_lock_irqsave(&dev->event_lock, flags);
 334                 work = crtc->unpin_work;
 335                 if (work == NULL) {
 336                         seq_printf(m, "No flip due on pipe %s (plane %s)\n",
 337                                    pipe, plane);
 338                 } else {
 339                         if (!work->pending) {
 340                                 seq_printf(m, "Flip queued on pipe %s (plane %s)\n",
 341                                            pipe, plane);
 342                         } else {
 343                                 seq_printf(m, "Flip pending (waiting for vsync) on pipe %s (plane %s)\n",
 344                                            pipe, plane);
 345                         }
 346                         if (work->enable_stall_check)
 347                                 seq_printf(m, "Stall check enabled, ");
 348                         else
 349                                 seq_printf(m, "Stall check waiting for page flip ioctl, ");
 350                         seq_printf(m, "%d prepares\n", work->pending);
 351
 352                         if (work->old_fb_obj) {
 353                                 struct drm_i915_gem_object *obj = work->old_fb_obj;
 354                                 if (obj)
 355                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 356                         }
 357                         if (work->pending_flip_obj) {
 358                                 struct drm_i915_gem_object *obj = work->pending_flip_obj;
 359                                 if (obj)
 360                                         seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 361                         }
 362                 }
 363                 spin_unlock_irqrestore(&dev->event_lock, flags);
 364         }
 365
 366         return 0;
 367 }
 368
 369 static int i915_gem_request_info(struct seq_file *m, void *data)
 370 {
 371         struct drm_info_node *node = (struct drm_info_node *) m->private;
 372         struct drm_device *dev = node->minor->dev;
 373         drm_i915_private_t *dev_priv = dev->dev_private;
 374         struct drm_i915_gem_request *gem_request;
 375         int ret, count;
 376
 377         ret = mutex_lock_interruptible(&dev->struct_mutex);
 378         if (ret)
 379                 return ret;
 380
 381         count = 0;
 382         if (!list_empty(&dev_priv->ring[RCS].request_list)) {
 383                 seq_printf(m, "Render requests:\n");
 384                 list_for_each_entry(gem_request,
 385                                     &dev_priv->ring[RCS].request_list,
 386                                     list) {
 387                         seq_printf(m, "    %d @ %d\n",
 388                                    gem_request->seqno,
 389                                    (int) (jiffies - gem_request->emitted_jiffies));
 390                 }
 391                 count++;
 392         }
 393         if (!list_empty(&dev_priv->ring[VCS].request_list)) {
 394                 seq_printf(m, "BSD requests:\n");
 395                 list_for_each_entry(gem_request,
 396                                     &dev_priv->ring[VCS].request_list,
 397                                     list) {
 398                         seq_printf(m, "    %d @ %d\n",
 399                                    gem_request->seqno,
 400                                    (int) (jiffies - gem_request->emitted_jiffies));
 401                 }
 402                 count++;
 403         }
 404         if (!list_empty(&dev_priv->ring[BCS].request_list)) {
 405                 seq_printf(m, "BLT requests:\n");
 406                 list_for_each_entry(gem_request,
 407                                     &dev_priv->ring[BCS].request_list,
 408                                     list) {
 409                         seq_printf(m, "    %d @ %d\n",
 410                                    gem_request->seqno,
 411                                    (int) (jiffies - gem_request->emitted_jiffies));
 412                 }
 413                 count++;
 414         }
 415         mutex_unlock(&dev->struct_mutex);
 416
 417         if (count == 0)
 418                 seq_printf(m, "No requests\n");
 419
 420         return 0;
 421 }
 422
 423 static void i915_ring_seqno_info(struct seq_file *m,
 424                                  struct intel_ring_buffer *ring)
 425 {
 426         if (ring->get_seqno) {
 427                 seq_printf(m, "Current sequence (%s): %d\n",
 428                            ring->name, ring->get_seqno(ring));
 429                 seq_printf(m, "Waiter sequence (%s):  %d\n",
 430                            ring->name, ring->waiting_seqno);
 431                 seq_printf(m, "IRQ sequence (%s):     %d\n",
 432                            ring->name, ring->irq_seqno);
 433         }
 434 }
 435
 436 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 437 {
 438         struct drm_info_node *node = (struct drm_info_node *) m->private;
 439         struct drm_device *dev = node->minor->dev;
 440         drm_i915_private_t *dev_priv = dev->dev_private;
 441         int ret, i;
 442
 443         ret = mutex_lock_interruptible(&dev->struct_mutex);
 444         if (ret)
 445                 return ret;
 446
 447         for (i = 0; i < I915_NUM_RINGS; i++)
 448                 i915_ring_seqno_info(m, &dev_priv->ring[i]);
 449
 450         mutex_unlock(&dev->struct_mutex);
 451
 452         return 0;
 453 }
 454
 455
 456 static int i915_interrupt_info(struct seq_file *m, void *data)
 457 {
 458         struct drm_info_node *node = (struct drm_info_node *) m->private;
 459         struct drm_device *dev = node->minor->dev;
 460         drm_i915_private_t *dev_priv = dev->dev_private;
 461         int ret, i;
 462
 463         ret = mutex_lock_interruptible(&dev->struct_mutex);
 464         if (ret)
 465                 return ret;
 466
 467         if (!HAS_PCH_SPLIT(dev)) {
 468                 seq_printf(m, "Interrupt enable:    %08x\n",
 469                            I915_READ(IER));
 470                 seq_printf(m, "Interrupt identity:  %08x\n",
 471                            I915_READ(IIR));
 472                 seq_printf(m, "Interrupt mask:      %08x\n",
 473                            I915_READ(IMR));
 474                 seq_printf(m, "Pipe A stat:         %08x\n",
 475                            I915_READ(PIPEASTAT));
 476                 seq_printf(m, "Pipe B stat:         %08x\n",
 477                            I915_READ(PIPEBSTAT));
 478         } else {
 479                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
 480                            I915_READ(DEIER));
 481                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
 482                            I915_READ(DEIIR));
 483                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
 484                            I915_READ(DEIMR));
 485                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
 486                            I915_READ(SDEIER));
 487                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
 488                            I915_READ(SDEIIR));
 489                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
 490                            I915_READ(SDEIMR));
 491                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
 492                            I915_READ(GTIER));
 493                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
 494                            I915_READ(GTIIR));
 495                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
 496                            I915_READ(GTIMR));
 497         }
 498         seq_printf(m, "Interrupts received: %d\n",
 499                    atomic_read(&dev_priv->irq_received));
 500         for (i = 0; i < I915_NUM_RINGS; i++) {
 501                 if (IS_GEN6(dev)) {
 502                         seq_printf(m, "Graphics Interrupt mask (%s):    %08x\n",
 503                                    dev_priv->ring[i].name,
 504                                    I915_READ_IMR(&dev_priv->ring[i]));
 505                 }
 506                 i915_ring_seqno_info(m, &dev_priv->ring[i]);
 507         }
 508         mutex_unlock(&dev->struct_mutex);
 509
 510         return 0;
 511 }
 512
 513 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 514 {
 515         struct drm_info_node *node = (struct drm_info_node *) m->private;
 516         struct drm_device *dev = node->minor->dev;
 517         drm_i915_private_t *dev_priv = dev->dev_private;
 518         int i, ret;
 519
 520         ret = mutex_lock_interruptible(&dev->struct_mutex);
 521         if (ret)
 522                 return ret;
 523
 524         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 525         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 526         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 527                 struct drm_i915_gem_object *obj = dev_priv->fence_regs[i].obj;
 528
 529                 seq_printf(m, "Fenced object[%2d] = ", i);
 530                 if (obj == NULL)
 531                         seq_printf(m, "unused");
 532                 else
 533                         describe_obj(m, obj);
 534                 seq_printf(m, "\n");
 535         }
 536
 537         mutex_unlock(&dev->struct_mutex);
 538         return 0;
 539 }
 540
 541 static int i915_hws_info(struct seq_file *m, void *data)
 542 {
 543         struct drm_info_node *node = (struct drm_info_node *) m->private;
 544         struct drm_device *dev = node->minor->dev;
 545         drm_i915_private_t *dev_priv = dev->dev_private;
 546         struct intel_ring_buffer *ring;
 547         volatile u32 *hws;
 548         int i;
 549
 550         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 551         hws = (volatile u32 *)ring->status_page.page_addr;
 552         if (hws == NULL)
 553                 return 0;
 554
 555         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 556                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 557                            i * 4,
 558                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 559         }
 560         return 0;
 561 }
 562
 563 static void i915_dump_object(struct seq_file *m,
 564                              struct io_mapping *mapping,
 565                              struct drm_i915_gem_object *obj)
 566 {
 567         int page, page_count, i;
 568
 569         page_count = obj->base.size / PAGE_SIZE;
 570         for (page = 0; page < page_count; page++) {
 571                 u32 *mem = io_mapping_map_wc(mapping,
 572                                              obj->gtt_offset + page * PAGE_SIZE);
 573                 for (i = 0; i < PAGE_SIZE; i += 4)
 574                         seq_printf(m, "%08x :  %08x\n", i, mem[i / 4]);
 575                 io_mapping_unmap(mem);
 576         }
 577 }
 578
 579 static int i915_batchbuffer_info(struct seq_file *m, void *data)
 580 {
 581         struct drm_info_node *node = (struct drm_info_node *) m->private;
 582         struct drm_device *dev = node->minor->dev;
 583         drm_i915_private_t *dev_priv = dev->dev_private;
 584         struct drm_i915_gem_object *obj;
 585         int ret;
 586
 587         ret = mutex_lock_interruptible(&dev->struct_mutex);
 588         if (ret)
 589                 return ret;
 590
 591         list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list) {
 592                 if (obj->base.read_domains & I915_GEM_DOMAIN_COMMAND) {
 593                     seq_printf(m, "--- gtt_offset = 0x%08x\n", obj->gtt_offset);
 594                     i915_dump_object(m, dev_priv->mm.gtt_mapping, obj);
 595                 }
 596         }
 597
 598         mutex_unlock(&dev->struct_mutex);
 599         return 0;
 600 }
 601
 602 static int i915_ringbuffer_data(struct seq_file *m, void *data)
 603 {
 604         struct drm_info_node *node = (struct drm_info_node *) m->private;
 605         struct drm_device *dev = node->minor->dev;
 606         drm_i915_private_t *dev_priv = dev->dev_private;
 607         struct intel_ring_buffer *ring;
 608         int ret;
 609
 610         ret = mutex_lock_interruptible(&dev->struct_mutex);
 611         if (ret)
 612                 return ret;
 613
 614         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 615         if (!ring->obj) {
 616                 seq_printf(m, "No ringbuffer setup\n");
 617         } else {
 618                 u8 *virt = ring->virtual_start;
 619                 uint32_t off;
 620
 621                 for (off = 0; off < ring->size; off += 4) {
 622                         uint32_t *ptr = (uint32_t *)(virt + off);
 623                         seq_printf(m, "%08x :  %08x\n", off, *ptr);
 624                 }
 625         }
 626         mutex_unlock(&dev->struct_mutex);
 627
 628         return 0;
 629 }
 630
 631 static int i915_ringbuffer_info(struct seq_file *m, void *data)
 632 {
 633         struct drm_info_node *node = (struct drm_info_node *) m->private;
 634         struct drm_device *dev = node->minor->dev;
 635         drm_i915_private_t *dev_priv = dev->dev_private;
 636         struct intel_ring_buffer *ring;
 637
 638         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 639         if (ring->size == 0)
 640                 return 0;
 641
 642         seq_printf(m, "Ring %s:\n", ring->name);
 643         seq_printf(m, "  Head :    %08x\n", I915_READ_HEAD(ring) & HEAD_ADDR);
 644         seq_printf(m, "  Tail :    %08x\n", I915_READ_TAIL(ring) & TAIL_ADDR);
 645         seq_printf(m, "  Size :    %08x\n", ring->size);
 646         seq_printf(m, "  Active :  %08x\n", intel_ring_get_active_head(ring));
 647         seq_printf(m, "  NOPID :   %08x\n", I915_READ_NOPID(ring));
 648         if (IS_GEN6(dev)) {
 649                 seq_printf(m, "  Sync 0 :   %08x\n", I915_READ_SYNC_0(ring));
 650                 seq_printf(m, "  Sync 1 :   %08x\n", I915_READ_SYNC_1(ring));
 651         }
 652         seq_printf(m, "  Control : %08x\n", I915_READ_CTL(ring));
 653         seq_printf(m, "  Start :   %08x\n", I915_READ_START(ring));
 654
 655         return 0;
 656 }
 657
 658 static const char *ring_str(int ring)
 659 {
 660         switch (ring) {
 661         case RING_RENDER: return " render";
 662         case RING_BSD: return " bsd";
 663         case RING_BLT: return " blt";
 664         default: return "";
 665         }
 666 }
 667
 668 static const char *pin_flag(int pinned)
 669 {
 670         if (pinned > 0)
 671                 return " P";
 672         else if (pinned < 0)
 673                 return " p";
 674         else
 675                 return "";
 676 }
 677
 678 static const char *tiling_flag(int tiling)
 679 {
 680         switch (tiling) {
 681         default:
 682         case I915_TILING_NONE: return "";
 683         case I915_TILING_X: return " X";
 684         case I915_TILING_Y: return " Y";
 685         }
 686 }
 687
 688 static const char *dirty_flag(int dirty)
 689 {
 690         return dirty ? " dirty" : "";
 691 }
 692
 693 static const char *purgeable_flag(int purgeable)
 694 {
 695         return purgeable ? " purgeable" : "";
 696 }
 697
 698 static void print_error_buffers(struct seq_file *m,
 699                                 const char *name,
 700                                 struct drm_i915_error_buffer *err,
 701                                 int count)
 702 {
 703         seq_printf(m, "%s [%d]:\n", name, count);
 704
 705         while (count--) {
 706                 seq_printf(m, "  %08x %8u %04x %04x %08x%s%s%s%s%s%s",
 707                            err->gtt_offset,
 708                            err->size,
 709                            err->read_domains,
 710                            err->write_domain,
 711                            err->seqno,
 712                            pin_flag(err->pinned),
 713                            tiling_flag(err->tiling),
 714                            dirty_flag(err->dirty),
 715                            purgeable_flag(err->purgeable),
 716                            ring_str(err->ring),
 717                            agp_type_str(err->agp_type));
 718
 719                 if (err->name)
 720                         seq_printf(m, " (name: %d)", err->name);
 721                 if (err->fence_reg != I915_FENCE_REG_NONE)
 722                         seq_printf(m, " (fence: %d)", err->fence_reg);
 723
 724                 seq_printf(m, "\n");
 725                 err++;
 726         }
 727 }
 728
 729 static int i915_error_state(struct seq_file *m, void *unused)
 730 {
 731         struct drm_info_node *node = (struct drm_info_node *) m->private;
 732         struct drm_device *dev = node->minor->dev;
 733         drm_i915_private_t *dev_priv = dev->dev_private;
 734         struct drm_i915_error_state *error;
 735         unsigned long flags;
 736         int i, page, offset, elt;
 737
 738         spin_lock_irqsave(&dev_priv->error_lock, flags);
 739         if (!dev_priv->first_error) {
 740                 seq_printf(m, "no error state collected\n");
 741                 goto out;
 742         }
 743
 744         error = dev_priv->first_error;
 745
 746         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 747                    error->time.tv_usec);
 748         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
 749         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 750         seq_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 751         if (INTEL_INFO(dev)->gen >= 6) {
 752                 seq_printf(m, "ERROR: 0x%08x\n", error->error);
 753                 seq_printf(m, "Blitter command stream:\n");
 754                 seq_printf(m, "  ACTHD:    0x%08x\n", error->bcs_acthd);
 755                 seq_printf(m, "  IPEIR:    0x%08x\n", error->bcs_ipeir);
 756                 seq_printf(m, "  IPEHR:    0x%08x\n", error->bcs_ipehr);
 757                 seq_printf(m, "  INSTDONE: 0x%08x\n", error->bcs_instdone);
 758                 seq_printf(m, "  seqno:    0x%08x\n", error->bcs_seqno);
 759                 seq_printf(m, "Video (BSD) command stream:\n");
 760                 seq_printf(m, "  ACTHD:    0x%08x\n", error->vcs_acthd);
 761                 seq_printf(m, "  IPEIR:    0x%08x\n", error->vcs_ipeir);
 762                 seq_printf(m, "  IPEHR:    0x%08x\n", error->vcs_ipehr);
 763                 seq_printf(m, "  INSTDONE: 0x%08x\n", error->vcs_instdone);
 764                 seq_printf(m, "  seqno:    0x%08x\n", error->vcs_seqno);
 765         }
 766         seq_printf(m, "Render command stream:\n");
 767         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd);
 768         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir);
 769         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr);
 770         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone);
 771         if (INTEL_INFO(dev)->gen >= 4) {
 772                 seq_printf(m, "  INSTDONE1: 0x%08x\n", error->instdone1);
 773                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps);
 774         }
 775         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm);
 776         seq_printf(m, "  seqno: 0x%08x\n", error->seqno);
 777
 778         for (i = 0; i < 16; i++)
 779                 seq_printf(m, "  fence[%d] = %08llx\n", i, error->fence[i]);
 780
 781         if (error->active_bo)
 782                 print_error_buffers(m, "Active",
 783                                     error->active_bo,
 784                                     error->active_bo_count);
 785
 786         if (error->pinned_bo)
 787                 print_error_buffers(m, "Pinned",
 788                                     error->pinned_bo,
 789                                     error->pinned_bo_count);
 790
 791         for (i = 0; i < ARRAY_SIZE(error->batchbuffer); i++) {
 792                 if (error->batchbuffer[i]) {
 793                         struct drm_i915_error_object *obj = error->batchbuffer[i];
 794
 795                         seq_printf(m, "%s --- gtt_offset = 0x%08x\n",
 796                                    dev_priv->ring[i].name,
 797                                    obj->gtt_offset);
 798                         offset = 0;
 799                         for (page = 0; page < obj->page_count; page++) {
 800                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 801                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 802                                         offset += 4;
 803                                 }
 804                         }
 805                 }
 806         }
 807
 808         if (error->ringbuffer) {
 809                 struct drm_i915_error_object *obj = error->ringbuffer;
 810
 811                 seq_printf(m, "--- ringbuffer = 0x%08x\n", obj->gtt_offset);
 812                 offset = 0;
 813                 for (page = 0; page < obj->page_count; page++) {
 814                         for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 815                                 seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 816                                 offset += 4;
 817                         }
 818                 }
 819         }
 820
 821         if (error->overlay)
 822                 intel_overlay_print_error_state(m, error->overlay);
 823
 824         if (error->display)
 825                 intel_display_print_error_state(m, dev, error->display);
 826
 827 out:
 828         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
 829
 830         return 0;
 831 }
 832
 833 static int i915_rstdby_delays(struct seq_file *m, void *unused)
 834 {
 835         struct drm_info_node *node = (struct drm_info_node *) m->private;
 836         struct drm_device *dev = node->minor->dev;
 837         drm_i915_private_t *dev_priv = dev->dev_private;
 838         u16 crstanddelay = I915_READ16(CRSTANDVID);
 839
 840         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
 841
 842         return 0;
 843 }
 844
 845 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
 846 {
 847         struct drm_info_node *node = (struct drm_info_node *) m->private;
 848         struct drm_device *dev = node->minor->dev;
 849         drm_i915_private_t *dev_priv = dev->dev_private;
 850
 851         if (IS_GEN5(dev)) {
 852                 u16 rgvswctl = I915_READ16(MEMSWCTL);
 853                 u16 rgvstat = I915_READ16(MEMSTAT_ILK);
 854
 855                 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 856                 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
 857                 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 858                            MEMSTAT_VID_SHIFT);
 859                 seq_printf(m, "Current P-state: %d\n",
 860                            (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
 861         } else if (IS_GEN6(dev)) {
 862                 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
 863                 u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
 864                 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
 865                 int max_freq;
 866
 867                 /* RPSTAT1 is in the GT power well */
 868                 __gen6_force_wake_get(dev_priv);
 869
 870                 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
 871                 seq_printf(m, "RPSTAT1: 0x%08x\n", I915_READ(GEN6_RPSTAT1));
 872                 seq_printf(m, "Render p-state ratio: %d\n",
 873                            (gt_perf_status & 0xff00) >> 8);
 874                 seq_printf(m, "Render p-state VID: %d\n",
 875                            gt_perf_status & 0xff);
 876                 seq_printf(m, "Render p-state limit: %d\n",
 877                            rp_state_limits & 0xff);
 878
 879                 max_freq = (rp_state_cap & 0xff0000) >> 16;
 880                 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
 881                            max_freq * 100);
 882
 883                 max_freq = (rp_state_cap & 0xff00) >> 8;
 884                 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
 885                            max_freq * 100);
 886
 887                 max_freq = rp_state_cap & 0xff;
 888                 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
 889                            max_freq * 100);
 890
 891                 __gen6_force_wake_put(dev_priv);
 892         } else {
 893                 seq_printf(m, "no P-state info available\n");
 894         }
 895
 896         return 0;
 897 }
 898
 899 static int i915_delayfreq_table(struct seq_file *m, void *unused)
 900 {
 901         struct drm_info_node *node = (struct drm_info_node *) m->private;
 902         struct drm_device *dev = node->minor->dev;
 903         drm_i915_private_t *dev_priv = dev->dev_private;
 904         u32 delayfreq;
 905         int i;
 906
 907         for (i = 0; i < 16; i++) {
 908                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
 909                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
 910                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
 911         }
 912
 913         return 0;
 914 }
 915
 916 static inline int MAP_TO_MV(int map)
 917 {
 918         return 1250 - (map * 25);
 919 }
 920
 921 static int i915_inttoext_table(struct seq_file *m, void *unused)
 922 {
 923         struct drm_info_node *node = (struct drm_info_node *) m->private;
 924         struct drm_device *dev = node->minor->dev;
 925         drm_i915_private_t *dev_priv = dev->dev_private;
 926         u32 inttoext;
 927         int i;
 928
 929         for (i = 1; i <= 32; i++) {
 930                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
 931                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
 932         }
 933
 934         return 0;
 935 }
 936
 937 static int i915_drpc_info(struct seq_file *m, void *unused)
 938 {
 939         struct drm_info_node *node = (struct drm_info_node *) m->private;
 940         struct drm_device *dev = node->minor->dev;
 941         drm_i915_private_t *dev_priv = dev->dev_private;
 942         u32 rgvmodectl = I915_READ(MEMMODECTL);
 943         u32 rstdbyctl = I915_READ(RSTDBYCTL);
 944         u16 crstandvid = I915_READ16(CRSTANDVID);
 945
 946         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
 947                    "yes" : "no");
 948         seq_printf(m, "Boost freq: %d\n",
 949                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
 950                    MEMMODE_BOOST_FREQ_SHIFT);
 951         seq_printf(m, "HW control enabled: %s\n",
 952                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
 953         seq_printf(m, "SW control enabled: %s\n",
 954                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
 955         seq_printf(m, "Gated voltage change: %s\n",
 956                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
 957         seq_printf(m, "Starting frequency: P%d\n",
 958                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
 959         seq_printf(m, "Max P-state: P%d\n",
 960                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
 961         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
 962         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
 963         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
 964         seq_printf(m, "Render standby enabled: %s\n",
 965                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
 966         seq_printf(m, "Current RS state: ");
 967         switch (rstdbyctl & RSX_STATUS_MASK) {
 968         case RSX_STATUS_ON:
 969                 seq_printf(m, "on\n");
 970                 break;
 971         case RSX_STATUS_RC1:
 972                 seq_printf(m, "RC1\n");
 973                 break;
 974         case RSX_STATUS_RC1E:
 975                 seq_printf(m, "RC1E\n");
 976                 break;
 977         case RSX_STATUS_RS1:
 978                 seq_printf(m, "RS1\n");
 979                 break;
 980         case RSX_STATUS_RS2:
 981                 seq_printf(m, "RS2 (RC6)\n");
 982                 break;
 983         case RSX_STATUS_RS3:
 984                 seq_printf(m, "RC3 (RC6+)\n");
 985                 break;
 986         default:
 987                 seq_printf(m, "unknown\n");
 988                 break;
 989         }
 990
 991         return 0;
 992 }
 993
 994 static int i915_fbc_status(struct seq_file *m, void *unused)
 995 {
 996         struct drm_info_node *node = (struct drm_info_node *) m->private;
 997         struct drm_device *dev = node->minor->dev;
 998         drm_i915_private_t *dev_priv = dev->dev_private;
 999
1000         if (!I915_HAS_FBC(dev)) {
1001                 seq_printf(m, "FBC unsupported on this chipset\n");
1002                 return 0;
1003         }
1004
1005         if (intel_fbc_enabled(dev)) {
1006                 seq_printf(m, "FBC enabled\n");
1007         } else {
1008                 seq_printf(m, "FBC disabled: ");
1009                 switch (dev_priv->no_fbc_reason) {
1010                 case FBC_NO_OUTPUT:
1011                         seq_printf(m, "no outputs");
1012                         break;
1013                 case FBC_STOLEN_TOO_SMALL:
1014                         seq_printf(m, "not enough stolen memory");
1015                         break;
1016                 case FBC_UNSUPPORTED_MODE:
1017                         seq_printf(m, "mode not supported");
1018                         break;
1019                 case FBC_MODE_TOO_LARGE:
1020                         seq_printf(m, "mode too large");
1021                         break;
1022                 case FBC_BAD_PLANE:
1023                         seq_printf(m, "FBC unsupported on plane");
1024                         break;
1025                 case FBC_NOT_TILED:
1026                         seq_printf(m, "scanout buffer not tiled");
1027                         break;
1028                 case FBC_MULTIPLE_PIPES:
1029                         seq_printf(m, "multiple pipes are enabled");
1030                         break;
1031                 default:
1032                         seq_printf(m, "unknown reason");
1033                 }
1034                 seq_printf(m, "\n");
1035         }
1036         return 0;
1037 }
1038
1039 static int i915_sr_status(struct seq_file *m, void *unused)
1040 {
1041         struct drm_info_node *node = (struct drm_info_node *) m->private;
1042         struct drm_device *dev = node->minor->dev;
1043         drm_i915_private_t *dev_priv = dev->dev_private;
1044         bool sr_enabled = false;
1045
1046         if (HAS_PCH_SPLIT(dev))
1047                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1048         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
1049                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1050         else if (IS_I915GM(dev))
1051                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1052         else if (IS_PINEVIEW(dev))
1053                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1054
1055         seq_printf(m, "self-refresh: %s\n",
1056                    sr_enabled ? "enabled" : "disabled");
1057
1058         return 0;
1059 }
1060
1061 static int i915_emon_status(struct seq_file *m, void *unused)
1062 {
1063         struct drm_info_node *node = (struct drm_info_node *) m->private;
1064         struct drm_device *dev = node->minor->dev;
1065         drm_i915_private_t *dev_priv = dev->dev_private;
1066         unsigned long temp, chipset, gfx;
1067         int ret;
1068
1069         ret = mutex_lock_interruptible(&dev->struct_mutex);
1070         if (ret)
1071                 return ret;
1072
1073         temp = i915_mch_val(dev_priv);
1074         chipset = i915_chipset_val(dev_priv);
1075         gfx = i915_gfx_val(dev_priv);
1076         mutex_unlock(&dev->struct_mutex);
1077
1078         seq_printf(m, "GMCH temp: %ld\n", temp);
1079         seq_printf(m, "Chipset power: %ld\n", chipset);
1080         seq_printf(m, "GFX power: %ld\n", gfx);
1081         seq_printf(m, "Total power: %ld\n", chipset + gfx);
1082
1083         return 0;
1084 }
1085
1086 static int i915_gfxec(struct seq_file *m, void *unused)
1087 {
1088         struct drm_info_node *node = (struct drm_info_node *) m->private;
1089         struct drm_device *dev = node->minor->dev;
1090         drm_i915_private_t *dev_priv = dev->dev_private;
1091
1092         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
1093
1094         return 0;
1095 }
1096
1097 static int i915_opregion(struct seq_file *m, void *unused)
1098 {
1099         struct drm_info_node *node = (struct drm_info_node *) m->private;
1100         struct drm_device *dev = node->minor->dev;
1101         drm_i915_private_t *dev_priv = dev->dev_private;
1102         struct intel_opregion *opregion = &dev_priv->opregion;
1103         int ret;
1104
1105         ret = mutex_lock_interruptible(&dev->struct_mutex);
1106         if (ret)
1107                 return ret;
1108
1109         if (opregion->header)
1110                 seq_write(m, opregion->header, OPREGION_SIZE);
1111
1112         mutex_unlock(&dev->struct_mutex);
1113
1114         return 0;
1115 }
1116
1117 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
1118 {
1119         struct drm_info_node *node = (struct drm_info_node *) m->private;
1120         struct drm_device *dev = node->minor->dev;
1121         drm_i915_private_t *dev_priv = dev->dev_private;
1122         struct intel_fbdev *ifbdev;
1123         struct intel_framebuffer *fb;
1124         int ret;
1125
1126         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1127         if (ret)
1128                 return ret;
1129
1130         ifbdev = dev_priv->fbdev;
1131         fb = to_intel_framebuffer(ifbdev->helper.fb);
1132
1133         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
1134                    fb->base.width,
1135                    fb->base.height,
1136                    fb->base.depth,
1137                    fb->base.bits_per_pixel);
1138         describe_obj(m, fb->obj);
1139         seq_printf(m, "\n");
1140
1141         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
1142                 if (&fb->base == ifbdev->helper.fb)
1143                         continue;
1144
1145                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
1146                            fb->base.width,
1147                            fb->base.height,
1148                            fb->base.depth,
1149                            fb->base.bits_per_pixel);
1150                 describe_obj(m, fb->obj);
1151                 seq_printf(m, "\n");
1152         }
1153
1154         mutex_unlock(&dev->mode_config.mutex);
1155
1156         return 0;
1157 }
1158
1159 static int
1160 i915_wedged_open(struct inode *inode,
1161                  struct file *filp)
1162 {
1163         filp->private_data = inode->i_private;
1164         return 0;
1165 }
1166
1167 static ssize_t
1168 i915_wedged_read(struct file *filp,
1169                  char __user *ubuf,
1170                  size_t max,
1171                  loff_t *ppos)
1172 {
1173         struct drm_device *dev = filp->private_data;
1174         drm_i915_private_t *dev_priv = dev->dev_private;
1175         char buf[80];
1176         int len;
1177
1178         len = snprintf(buf, sizeof (buf),
1179                        "wedged :  %d\n",
1180                        atomic_read(&dev_priv->mm.wedged));
1181
1182         if (len > sizeof (buf))
1183                 len = sizeof (buf);
1184
1185         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1186 }
1187
1188 static ssize_t
1189 i915_wedged_write(struct file *filp,
1190                   const char __user *ubuf,
1191                   size_t cnt,
1192                   loff_t *ppos)
1193 {
1194         struct drm_device *dev = filp->private_data;
1195         char buf[20];
1196         int val = 1;
1197
1198         if (cnt > 0) {
1199                 if (cnt > sizeof (buf) - 1)
1200                         return -EINVAL;
1201
1202                 if (copy_from_user(buf, ubuf, cnt))
1203                         return -EFAULT;
1204                 buf[cnt] = 0;
1205
1206                 val = simple_strtoul(buf, NULL, 0);
1207         }
1208
1209         DRM_INFO("Manually setting wedged to %d\n", val);
1210         i915_handle_error(dev, val);
1211
1212         return cnt;
1213 }
1214
1215 static const struct file_operations i915_wedged_fops = {
1216         .owner = THIS_MODULE,
1217         .open = i915_wedged_open,
1218         .read = i915_wedged_read,
1219         .write = i915_wedged_write,
1220         .llseek = default_llseek,
1221 };
1222
1223 /* As the drm_debugfs_init() routines are called before dev->dev_private is
1224  * allocated we need to hook into the minor for release. */
1225 static int
1226 drm_add_fake_info_node(struct drm_minor *minor,
1227                        struct dentry *ent,
1228                        const void *key)
1229 {
1230         struct drm_info_node *node;
1231
1232         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
1233         if (node == NULL) {
1234                 debugfs_remove(ent);
1235                 return -ENOMEM;
1236         }
1237
1238         node->minor = minor;
1239         node->dent = ent;
1240         node->info_ent = (void *) key;
1241         list_add(&node->list, &minor->debugfs_nodes.list);
1242
1243         return 0;
1244 }
1245
1246 static int i915_wedged_create(struct dentry *root, struct drm_minor *minor)
1247 {
1248         struct drm_device *dev = minor->dev;
1249         struct dentry *ent;
1250
1251         ent = debugfs_create_file("i915_wedged",
1252                                   S_IRUGO | S_IWUSR,
1253                                   root, dev,
1254                                   &i915_wedged_fops);
1255         if (IS_ERR(ent))
1256                 return PTR_ERR(ent);
1257
1258         return drm_add_fake_info_node(minor, ent, &i915_wedged_fops);
1259 }
1260
1261 static struct drm_info_list i915_debugfs_list[] = {
1262         {"i915_capabilities", i915_capabilities, 0, 0},
1263         {"i915_gem_objects", i915_gem_object_info, 0},
1264         {"i915_gem_gtt", i915_gem_gtt_info, 0},
1265         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
1266         {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
1267         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
1268         {"i915_gem_pinned", i915_gem_object_list_info, 0, (void *) PINNED_LIST},
1269         {"i915_gem_deferred_free", i915_gem_object_list_info, 0, (void *) DEFERRED_FREE_LIST},
1270         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
1271         {"i915_gem_request", i915_gem_request_info, 0},
1272         {"i915_gem_seqno", i915_gem_seqno_info, 0},
1273         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
1274         {"i915_gem_interrupt", i915_interrupt_info, 0},
1275         {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
1276         {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
1277         {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
1278         {"i915_ringbuffer_data", i915_ringbuffer_data, 0, (void *)RCS},
1279         {"i915_ringbuffer_info", i915_ringbuffer_info, 0, (void *)RCS},
1280         {"i915_bsd_ringbuffer_data", i915_ringbuffer_data, 0, (void *)VCS},
1281         {"i915_bsd_ringbuffer_info", i915_ringbuffer_info, 0, (void *)VCS},
1282         {"i915_blt_ringbuffer_data", i915_ringbuffer_data, 0, (void *)BCS},
1283         {"i915_blt_ringbuffer_info", i915_ringbuffer_info, 0, (void *)BCS},
1284         {"i915_batchbuffers", i915_batchbuffer_info, 0},
1285         {"i915_error_state", i915_error_state, 0},
1286         {"i915_rstdby_delays", i915_rstdby_delays, 0},
1287         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
1288         {"i915_delayfreq_table", i915_delayfreq_table, 0},
1289         {"i915_inttoext_table", i915_inttoext_table, 0},
1290         {"i915_drpc_info", i915_drpc_info, 0},
1291         {"i915_emon_status", i915_emon_status, 0},
1292         {"i915_gfxec", i915_gfxec, 0},
1293         {"i915_fbc_status", i915_fbc_status, 0},
1294         {"i915_sr_status", i915_sr_status, 0},
1295         {"i915_opregion", i915_opregion, 0},
1296         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
1297 };
1298 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
1299
1300 int i915_debugfs_init(struct drm_minor *minor)
1301 {
1302         int ret;
1303
1304         ret = i915_wedged_create(minor->debugfs_root, minor);
1305         if (ret)
1306                 return ret;
1307
1308         return drm_debugfs_create_files(i915_debugfs_list,
1309                                         I915_DEBUGFS_ENTRIES,
1310                                         minor->debugfs_root, minor);
1311 }
1312
1313 void i915_debugfs_cleanup(struct drm_minor *minor)
1314 {
1315         drm_debugfs_remove_files(i915_debugfs_list,
1316                                  I915_DEBUGFS_ENTRIES, minor);
1317         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
1318                                  1, minor);
1319 }
1320
1321 #endif /* CONFIG_DEBUG_FS */