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 #undef B
  87
  88         return 0;
  89 }
  90
  91 static const char *get_pin_flag(struct drm_i915_gem_object *obj)
  92 {
  93         if (obj->user_pin_count > 0)
  94                 return "P";
  95         else if (obj->pin_count > 0)
  96                 return "p";
  97         else
  98                 return " ";
  99 }
 100
 101 static const char *get_tiling_flag(struct drm_i915_gem_object *obj)
 102 {
 103         switch (obj->tiling_mode) {
 104         default:
 105         case I915_TILING_NONE: return " ";
 106         case I915_TILING_X: return "X";
 107         case I915_TILING_Y: return "Y";
 108         }
 109 }
 110
 111 static const char *cache_level_str(int type)
 112 {
 113         switch (type) {
 114         case I915_CACHE_NONE: return " uncached";
 115         case I915_CACHE_LLC: return " snooped (LLC)";
 116         case I915_CACHE_LLC_MLC: return " snooped (LLC+MLC)";
 117         default: return "";
 118         }
 119 }
 120
 121 static void
 122 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 123 {
 124         seq_printf(m, "%p: %s%s %8zd %04x %04x %d %d%s%s%s",
 125                    &obj->base,
 126                    get_pin_flag(obj),
 127                    get_tiling_flag(obj),
 128                    obj->base.size,
 129                    obj->base.read_domains,
 130                    obj->base.write_domain,
 131                    obj->last_rendering_seqno,
 132                    obj->last_fenced_seqno,
 133                    cache_level_str(obj->cache_level),
 134                    obj->dirty ? " dirty" : "",
 135                    obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
 136         if (obj->base.name)
 137                 seq_printf(m, " (name: %d)", obj->base.name);
 138         if (obj->fence_reg != I915_FENCE_REG_NONE)
 139                 seq_printf(m, " (fence: %d)", obj->fence_reg);
 140         if (obj->gtt_space != NULL)
 141                 seq_printf(m, " (gtt offset: %08x, size: %08x)",
 142                            obj->gtt_offset, (unsigned int)obj->gtt_space->size);
 143         if (obj->pin_mappable || obj->fault_mappable) {
 144                 char s[3], *t = s;
 145                 if (obj->pin_mappable)
 146                         *t++ = 'p';
 147                 if (obj->fault_mappable)
 148                         *t++ = 'f';
 149                 *t = '\0';
 150                 seq_printf(m, " (%s mappable)", s);
 151         }
 152         if (obj->ring != NULL)
 153                 seq_printf(m, " (%s)", obj->ring->name);
 154 }
 155
 156 static int i915_gem_object_list_info(struct seq_file *m, void *data)
 157 {
 158         struct drm_info_node *node = (struct drm_info_node *) m->private;
 159         uintptr_t list = (uintptr_t) node->info_ent->data;
 160         struct list_head *head;
 161         struct drm_device *dev = node->minor->dev;
 162         drm_i915_private_t *dev_priv = dev->dev_private;
 163         struct drm_i915_gem_object *obj;
 164         size_t total_obj_size, total_gtt_size;
 165         int count, ret;
 166
 167         ret = mutex_lock_interruptible(&dev->struct_mutex);
 168         if (ret)
 169                 return ret;
 170
 171         switch (list) {
 172         case ACTIVE_LIST:
 173                 seq_printf(m, "Active:\n");
 174                 head = &dev_priv->mm.active_list;
 175                 break;
 176         case INACTIVE_LIST:
 177                 seq_printf(m, "Inactive:\n");
 178                 head = &dev_priv->mm.inactive_list;
 179                 break;
 180         case PINNED_LIST:
 181                 seq_printf(m, "Pinned:\n");
 182                 head = &dev_priv->mm.pinned_list;
 183                 break;
 184         case FLUSHING_LIST:
 185                 seq_printf(m, "Flushing:\n");
 186                 head = &dev_priv->mm.flushing_list;
 187                 break;
 188         case DEFERRED_FREE_LIST:
 189                 seq_printf(m, "Deferred free:\n");
 190                 head = &dev_priv->mm.deferred_free_list;
 191                 break;
 192         default:
 193                 mutex_unlock(&dev->struct_mutex);
 194                 return -EINVAL;
 195         }
 196
 197         total_obj_size = total_gtt_size = count = 0;
 198         list_for_each_entry(obj, head, mm_list) {
 199                 seq_printf(m, "   ");
 200                 describe_obj(m, obj);
 201                 seq_printf(m, "\n");
 202                 total_obj_size += obj->base.size;
 203                 total_gtt_size += obj->gtt_space->size;
 204                 count++;
 205         }
 206         mutex_unlock(&dev->struct_mutex);
 207
 208         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 209                    count, total_obj_size, total_gtt_size);
 210         return 0;
 211 }
 212
 213 #define count_objects(list, member) do { \
 214         list_for_each_entry(obj, list, member) { \
 215                 size += obj->gtt_space->size; \
 216                 ++count; \
 217                 if (obj->map_and_fenceable) { \
 218                         mappable_size += obj->gtt_space->size; \
 219                         ++mappable_count; \
 220                 } \
 221         } \
 222 } while (0)
 223
 224 static int i915_gem_object_info(struct seq_file *m, void* data)
 225 {
 226         struct drm_info_node *node = (struct drm_info_node *) m->private;
 227         struct drm_device *dev = node->minor->dev;
 228         struct drm_i915_private *dev_priv = dev->dev_private;
 229         u32 count, mappable_count;
 230         size_t size, mappable_size;
 231         struct drm_i915_gem_object *obj;
 232         int ret;
 233
 234         ret = mutex_lock_interruptible(&dev->struct_mutex);
 235         if (ret)
 236                 return ret;
 237
 238         seq_printf(m, "%u objects, %zu bytes\n",
 239                    dev_priv->mm.object_count,
 240                    dev_priv->mm.object_memory);
 241
 242         size = count = mappable_size = mappable_count = 0;
 243         count_objects(&dev_priv->mm.gtt_list, gtt_list);
 244         seq_printf(m, "%u [%u] objects, %zu [%zu] bytes in gtt\n",
 245                    count, mappable_count, size, mappable_size);
 246
 247         size = count = mappable_size = mappable_count = 0;
 248         count_objects(&dev_priv->mm.active_list, mm_list);
 249         count_objects(&dev_priv->mm.flushing_list, mm_list);
 250         seq_printf(m, "  %u [%u] active objects, %zu [%zu] bytes\n",
 251                    count, mappable_count, size, mappable_size);
 252
 253         size = count = mappable_size = mappable_count = 0;
 254         count_objects(&dev_priv->mm.pinned_list, mm_list);
 255         seq_printf(m, "  %u [%u] pinned objects, %zu [%zu] bytes\n",
 256                    count, mappable_count, size, mappable_size);
 257
 258         size = count = mappable_size = mappable_count = 0;
 259         count_objects(&dev_priv->mm.inactive_list, mm_list);
 260         seq_printf(m, "  %u [%u] inactive objects, %zu [%zu] bytes\n",
 261                    count, mappable_count, size, mappable_size);
 262
 263         size = count = mappable_size = mappable_count = 0;
 264         count_objects(&dev_priv->mm.deferred_free_list, mm_list);
 265         seq_printf(m, "  %u [%u] freed objects, %zu [%zu] bytes\n",
 266                    count, mappable_count, size, mappable_size);
 267
 268         size = count = mappable_size = mappable_count = 0;
 269         list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
 270                 if (obj->fault_mappable) {
 271                         size += obj->gtt_space->size;
 272                         ++count;
 273                 }
 274                 if (obj->pin_mappable) {
 275                         mappable_size += obj->gtt_space->size;
 276                         ++mappable_count;
 277                 }
 278         }
 279         seq_printf(m, "%u pinned mappable objects, %zu bytes\n",
 280                    mappable_count, mappable_size);
 281         seq_printf(m, "%u fault mappable objects, %zu bytes\n",
 282                    count, size);
 283
 284         seq_printf(m, "%zu [%zu] gtt total\n",
 285                    dev_priv->mm.gtt_total, dev_priv->mm.mappable_gtt_total);
 286
 287         mutex_unlock(&dev->struct_mutex);
 288
 289         return 0;
 290 }
 291
 292 static int i915_gem_gtt_info(struct seq_file *m, void* data)
 293 {
 294         struct drm_info_node *node = (struct drm_info_node *) m->private;
 295         struct drm_device *dev = node->minor->dev;
 296         struct drm_i915_private *dev_priv = dev->dev_private;
 297         struct drm_i915_gem_object *obj;
 298         size_t total_obj_size, total_gtt_size;
 299         int count, ret;
 300
 301         ret = mutex_lock_interruptible(&dev->struct_mutex);
 302         if (ret)
 303                 return ret;
 304
 305         total_obj_size = total_gtt_size = count = 0;
 306         list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
 307                 seq_printf(m, "   ");
 308                 describe_obj(m, obj);
 309                 seq_printf(m, "\n");
 310                 total_obj_size += obj->base.size;
 311                 total_gtt_size += obj->gtt_space->size;
 312                 count++;
 313         }
 314
 315         mutex_unlock(&dev->struct_mutex);
 316
 317         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 318                    count, total_obj_size, total_gtt_size);
 319
 320         return 0;
 321 }
 322
 323
 324 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
 325 {
 326         struct drm_info_node *node = (struct drm_info_node *) m->private;
 327         struct drm_device *dev = node->minor->dev;
 328         unsigned long flags;
 329         struct intel_crtc *crtc;
 330
 331         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
 332                 const char pipe = pipe_name(crtc->pipe);
 333                 const char plane = plane_name(crtc->plane);
 334                 struct intel_unpin_work *work;
 335
 336                 spin_lock_irqsave(&dev->event_lock, flags);
 337                 work = crtc->unpin_work;
 338                 if (work == NULL) {
 339                         seq_printf(m, "No flip due on pipe %c (plane %c)\n",
 340                                    pipe, plane);
 341                 } else {
 342                         if (!work->pending) {
 343                                 seq_printf(m, "Flip queued on pipe %c (plane %c)\n",
 344                                            pipe, plane);
 345                         } else {
 346                                 seq_printf(m, "Flip pending (waiting for vsync) on pipe %c (plane %c)\n",
 347                                            pipe, plane);
 348                         }
 349                         if (work->enable_stall_check)
 350                                 seq_printf(m, "Stall check enabled, ");
 351                         else
 352                                 seq_printf(m, "Stall check waiting for page flip ioctl, ");
 353                         seq_printf(m, "%d prepares\n", work->pending);
 354
 355                         if (work->old_fb_obj) {
 356                                 struct drm_i915_gem_object *obj = work->old_fb_obj;
 357                                 if (obj)
 358                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 359                         }
 360                         if (work->pending_flip_obj) {
 361                                 struct drm_i915_gem_object *obj = work->pending_flip_obj;
 362                                 if (obj)
 363                                         seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 364                         }
 365                 }
 366                 spin_unlock_irqrestore(&dev->event_lock, flags);
 367         }
 368
 369         return 0;
 370 }
 371
 372 static int i915_gem_request_info(struct seq_file *m, void *data)
 373 {
 374         struct drm_info_node *node = (struct drm_info_node *) m->private;
 375         struct drm_device *dev = node->minor->dev;
 376         drm_i915_private_t *dev_priv = dev->dev_private;
 377         struct drm_i915_gem_request *gem_request;
 378         int ret, count;
 379
 380         ret = mutex_lock_interruptible(&dev->struct_mutex);
 381         if (ret)
 382                 return ret;
 383
 384         count = 0;
 385         if (!list_empty(&dev_priv->ring[RCS].request_list)) {
 386                 seq_printf(m, "Render requests:\n");
 387                 list_for_each_entry(gem_request,
 388                                     &dev_priv->ring[RCS].request_list,
 389                                     list) {
 390                         seq_printf(m, "    %d @ %d\n",
 391                                    gem_request->seqno,
 392                                    (int) (jiffies - gem_request->emitted_jiffies));
 393                 }
 394                 count++;
 395         }
 396         if (!list_empty(&dev_priv->ring[VCS].request_list)) {
 397                 seq_printf(m, "BSD requests:\n");
 398                 list_for_each_entry(gem_request,
 399                                     &dev_priv->ring[VCS].request_list,
 400                                     list) {
 401                         seq_printf(m, "    %d @ %d\n",
 402                                    gem_request->seqno,
 403                                    (int) (jiffies - gem_request->emitted_jiffies));
 404                 }
 405                 count++;
 406         }
 407         if (!list_empty(&dev_priv->ring[BCS].request_list)) {
 408                 seq_printf(m, "BLT requests:\n");
 409                 list_for_each_entry(gem_request,
 410                                     &dev_priv->ring[BCS].request_list,
 411                                     list) {
 412                         seq_printf(m, "    %d @ %d\n",
 413                                    gem_request->seqno,
 414                                    (int) (jiffies - gem_request->emitted_jiffies));
 415                 }
 416                 count++;
 417         }
 418         mutex_unlock(&dev->struct_mutex);
 419
 420         if (count == 0)
 421                 seq_printf(m, "No requests\n");
 422
 423         return 0;
 424 }
 425
 426 static void i915_ring_seqno_info(struct seq_file *m,
 427                                  struct intel_ring_buffer *ring)
 428 {
 429         if (ring->get_seqno) {
 430                 seq_printf(m, "Current sequence (%s): %d\n",
 431                            ring->name, ring->get_seqno(ring));
 432                 seq_printf(m, "Waiter sequence (%s):  %d\n",
 433                            ring->name, ring->waiting_seqno);
 434                 seq_printf(m, "IRQ sequence (%s):     %d\n",
 435                            ring->name, ring->irq_seqno);
 436         }
 437 }
 438
 439 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 440 {
 441         struct drm_info_node *node = (struct drm_info_node *) m->private;
 442         struct drm_device *dev = node->minor->dev;
 443         drm_i915_private_t *dev_priv = dev->dev_private;
 444         int ret, i;
 445
 446         ret = mutex_lock_interruptible(&dev->struct_mutex);
 447         if (ret)
 448                 return ret;
 449
 450         for (i = 0; i < I915_NUM_RINGS; i++)
 451                 i915_ring_seqno_info(m, &dev_priv->ring[i]);
 452
 453         mutex_unlock(&dev->struct_mutex);
 454
 455         return 0;
 456 }
 457
 458
 459 static int i915_interrupt_info(struct seq_file *m, void *data)
 460 {
 461         struct drm_info_node *node = (struct drm_info_node *) m->private;
 462         struct drm_device *dev = node->minor->dev;
 463         drm_i915_private_t *dev_priv = dev->dev_private;
 464         int ret, i, pipe;
 465
 466         ret = mutex_lock_interruptible(&dev->struct_mutex);
 467         if (ret)
 468                 return ret;
 469
 470         if (!HAS_PCH_SPLIT(dev)) {
 471                 seq_printf(m, "Interrupt enable:    %08x\n",
 472                            I915_READ(IER));
 473                 seq_printf(m, "Interrupt identity:  %08x\n",
 474                            I915_READ(IIR));
 475                 seq_printf(m, "Interrupt mask:      %08x\n",
 476                            I915_READ(IMR));
 477                 for_each_pipe(pipe)
 478                         seq_printf(m, "Pipe %c stat:         %08x\n",
 479                                    pipe_name(pipe),
 480                                    I915_READ(PIPESTAT(pipe)));
 481         } else {
 482                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
 483                            I915_READ(DEIER));
 484                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
 485                            I915_READ(DEIIR));
 486                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
 487                            I915_READ(DEIMR));
 488                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
 489                            I915_READ(SDEIER));
 490                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
 491                            I915_READ(SDEIIR));
 492                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
 493                            I915_READ(SDEIMR));
 494                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
 495                            I915_READ(GTIER));
 496                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
 497                            I915_READ(GTIIR));
 498                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
 499                            I915_READ(GTIMR));
 500         }
 501         seq_printf(m, "Interrupts received: %d\n",
 502                    atomic_read(&dev_priv->irq_received));
 503         for (i = 0; i < I915_NUM_RINGS; i++) {
 504                 if (IS_GEN6(dev) || IS_GEN7(dev)) {
 505                         seq_printf(m, "Graphics Interrupt mask (%s):    %08x\n",
 506                                    dev_priv->ring[i].name,
 507                                    I915_READ_IMR(&dev_priv->ring[i]));
 508                 }
 509                 i915_ring_seqno_info(m, &dev_priv->ring[i]);
 510         }
 511         mutex_unlock(&dev->struct_mutex);
 512
 513         return 0;
 514 }
 515
 516 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 517 {
 518         struct drm_info_node *node = (struct drm_info_node *) m->private;
 519         struct drm_device *dev = node->minor->dev;
 520         drm_i915_private_t *dev_priv = dev->dev_private;
 521         int i, ret;
 522
 523         ret = mutex_lock_interruptible(&dev->struct_mutex);
 524         if (ret)
 525                 return ret;
 526
 527         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 528         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 529         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 530                 struct drm_i915_gem_object *obj = dev_priv->fence_regs[i].obj;
 531
 532                 seq_printf(m, "Fenced object[%2d] = ", i);
 533                 if (obj == NULL)
 534                         seq_printf(m, "unused");
 535                 else
 536                         describe_obj(m, obj);
 537                 seq_printf(m, "\n");
 538         }
 539
 540         mutex_unlock(&dev->struct_mutex);
 541         return 0;
 542 }
 543
 544 static int i915_hws_info(struct seq_file *m, void *data)
 545 {
 546         struct drm_info_node *node = (struct drm_info_node *) m->private;
 547         struct drm_device *dev = node->minor->dev;
 548         drm_i915_private_t *dev_priv = dev->dev_private;
 549         struct intel_ring_buffer *ring;
 550         const volatile u32 __iomem *hws;
 551         int i;
 552
 553         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 554         hws = (volatile u32 __iomem *)ring->status_page.page_addr;
 555         if (hws == NULL)
 556                 return 0;
 557
 558         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 559                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 560                            i * 4,
 561                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 562         }
 563         return 0;
 564 }
 565
 566 static void i915_dump_object(struct seq_file *m,
 567                              struct io_mapping *mapping,
 568                              struct drm_i915_gem_object *obj)
 569 {
 570         int page, page_count, i;
 571
 572         page_count = obj->base.size / PAGE_SIZE;
 573         for (page = 0; page < page_count; page++) {
 574                 u32 *mem = io_mapping_map_wc(mapping,
 575                                              obj->gtt_offset + page * PAGE_SIZE);
 576                 for (i = 0; i < PAGE_SIZE; i += 4)
 577                         seq_printf(m, "%08x :  %08x\n", i, mem[i / 4]);
 578                 io_mapping_unmap(mem);
 579         }
 580 }
 581
 582 static int i915_batchbuffer_info(struct seq_file *m, void *data)
 583 {
 584         struct drm_info_node *node = (struct drm_info_node *) m->private;
 585         struct drm_device *dev = node->minor->dev;
 586         drm_i915_private_t *dev_priv = dev->dev_private;
 587         struct drm_i915_gem_object *obj;
 588         int ret;
 589
 590         ret = mutex_lock_interruptible(&dev->struct_mutex);
 591         if (ret)
 592                 return ret;
 593
 594         list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list) {
 595                 if (obj->base.read_domains & I915_GEM_DOMAIN_COMMAND) {
 596                     seq_printf(m, "--- gtt_offset = 0x%08x\n", obj->gtt_offset);
 597                     i915_dump_object(m, dev_priv->mm.gtt_mapping, obj);
 598                 }
 599         }
 600
 601         mutex_unlock(&dev->struct_mutex);
 602         return 0;
 603 }
 604
 605 static int i915_ringbuffer_data(struct seq_file *m, void *data)
 606 {
 607         struct drm_info_node *node = (struct drm_info_node *) m->private;
 608         struct drm_device *dev = node->minor->dev;
 609         drm_i915_private_t *dev_priv = dev->dev_private;
 610         struct intel_ring_buffer *ring;
 611         int ret;
 612
 613         ret = mutex_lock_interruptible(&dev->struct_mutex);
 614         if (ret)
 615                 return ret;
 616
 617         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 618         if (!ring->obj) {
 619                 seq_printf(m, "No ringbuffer setup\n");
 620         } else {
 621                 const u8 __iomem *virt = ring->virtual_start;
 622                 uint32_t off;
 623
 624                 for (off = 0; off < ring->size; off += 4) {
 625                         uint32_t *ptr = (uint32_t *)(virt + off);
 626                         seq_printf(m, "%08x :  %08x\n", off, *ptr);
 627                 }
 628         }
 629         mutex_unlock(&dev->struct_mutex);
 630
 631         return 0;
 632 }
 633
 634 static int i915_ringbuffer_info(struct seq_file *m, void *data)
 635 {
 636         struct drm_info_node *node = (struct drm_info_node *) m->private;
 637         struct drm_device *dev = node->minor->dev;
 638         drm_i915_private_t *dev_priv = dev->dev_private;
 639         struct intel_ring_buffer *ring;
 640         int ret;
 641
 642         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 643         if (ring->size == 0)
 644                 return 0;
 645
 646         ret = mutex_lock_interruptible(&dev->struct_mutex);
 647         if (ret)
 648                 return ret;
 649
 650         seq_printf(m, "Ring %s:\n", ring->name);
 651         seq_printf(m, "  Head :    %08x\n", I915_READ_HEAD(ring) & HEAD_ADDR);
 652         seq_printf(m, "  Tail :    %08x\n", I915_READ_TAIL(ring) & TAIL_ADDR);
 653         seq_printf(m, "  Size :    %08x\n", ring->size);
 654         seq_printf(m, "  Active :  %08x\n", intel_ring_get_active_head(ring));
 655         seq_printf(m, "  NOPID :   %08x\n", I915_READ_NOPID(ring));
 656         if (IS_GEN6(dev)) {
 657                 seq_printf(m, "  Sync 0 :   %08x\n", I915_READ_SYNC_0(ring));
 658                 seq_printf(m, "  Sync 1 :   %08x\n", I915_READ_SYNC_1(ring));
 659         }
 660         seq_printf(m, "  Control : %08x\n", I915_READ_CTL(ring));
 661         seq_printf(m, "  Start :   %08x\n", I915_READ_START(ring));
 662
 663         mutex_unlock(&dev->struct_mutex);
 664
 665         return 0;
 666 }
 667
 668 static const char *ring_str(int ring)
 669 {
 670         switch (ring) {
 671         case RING_RENDER: return " render";
 672         case RING_BSD: return " bsd";
 673         case RING_BLT: return " blt";
 674         default: return "";
 675         }
 676 }
 677
 678 static const char *pin_flag(int pinned)
 679 {
 680         if (pinned > 0)
 681                 return " P";
 682         else if (pinned < 0)
 683                 return " p";
 684         else
 685                 return "";
 686 }
 687
 688 static const char *tiling_flag(int tiling)
 689 {
 690         switch (tiling) {
 691         default:
 692         case I915_TILING_NONE: return "";
 693         case I915_TILING_X: return " X";
 694         case I915_TILING_Y: return " Y";
 695         }
 696 }
 697
 698 static const char *dirty_flag(int dirty)
 699 {
 700         return dirty ? " dirty" : "";
 701 }
 702
 703 static const char *purgeable_flag(int purgeable)
 704 {
 705         return purgeable ? " purgeable" : "";
 706 }
 707
 708 static void print_error_buffers(struct seq_file *m,
 709                                 const char *name,
 710                                 struct drm_i915_error_buffer *err,
 711                                 int count)
 712 {
 713         seq_printf(m, "%s [%d]:\n", name, count);
 714
 715         while (count--) {
 716                 seq_printf(m, "  %08x %8u %04x %04x %08x%s%s%s%s%s%s",
 717                            err->gtt_offset,
 718                            err->size,
 719                            err->read_domains,
 720                            err->write_domain,
 721                            err->seqno,
 722                            pin_flag(err->pinned),
 723                            tiling_flag(err->tiling),
 724                            dirty_flag(err->dirty),
 725                            purgeable_flag(err->purgeable),
 726                            ring_str(err->ring),
 727                            cache_level_str(err->cache_level));
 728
 729                 if (err->name)
 730                         seq_printf(m, " (name: %d)", err->name);
 731                 if (err->fence_reg != I915_FENCE_REG_NONE)
 732                         seq_printf(m, " (fence: %d)", err->fence_reg);
 733
 734                 seq_printf(m, "\n");
 735                 err++;
 736         }
 737 }
 738
 739 static int i915_error_state(struct seq_file *m, void *unused)
 740 {
 741         struct drm_info_node *node = (struct drm_info_node *) m->private;
 742         struct drm_device *dev = node->minor->dev;
 743         drm_i915_private_t *dev_priv = dev->dev_private;
 744         struct drm_i915_error_state *error;
 745         unsigned long flags;
 746         int i, page, offset, elt;
 747
 748         spin_lock_irqsave(&dev_priv->error_lock, flags);
 749         if (!dev_priv->first_error) {
 750                 seq_printf(m, "no error state collected\n");
 751                 goto out;
 752         }
 753
 754         error = dev_priv->first_error;
 755
 756         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 757                    error->time.tv_usec);
 758         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
 759         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 760         seq_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 761         if (INTEL_INFO(dev)->gen >= 6) {
 762                 seq_printf(m, "ERROR: 0x%08x\n", error->error);
 763                 seq_printf(m, "Blitter command stream:\n");
 764                 seq_printf(m, "  ACTHD:    0x%08x\n", error->bcs_acthd);
 765                 seq_printf(m, "  IPEIR:    0x%08x\n", error->bcs_ipeir);
 766                 seq_printf(m, "  IPEHR:    0x%08x\n", error->bcs_ipehr);
 767                 seq_printf(m, "  INSTDONE: 0x%08x\n", error->bcs_instdone);
 768                 seq_printf(m, "  seqno:    0x%08x\n", error->bcs_seqno);
 769                 seq_printf(m, "Video (BSD) command stream:\n");
 770                 seq_printf(m, "  ACTHD:    0x%08x\n", error->vcs_acthd);
 771                 seq_printf(m, "  IPEIR:    0x%08x\n", error->vcs_ipeir);
 772                 seq_printf(m, "  IPEHR:    0x%08x\n", error->vcs_ipehr);
 773                 seq_printf(m, "  INSTDONE: 0x%08x\n", error->vcs_instdone);
 774                 seq_printf(m, "  seqno:    0x%08x\n", error->vcs_seqno);
 775         }
 776         seq_printf(m, "Render command stream:\n");
 777         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd);
 778         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir);
 779         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr);
 780         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone);
 781         if (INTEL_INFO(dev)->gen >= 4) {
 782                 seq_printf(m, "  INSTDONE1: 0x%08x\n", error->instdone1);
 783                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps);
 784         }
 785         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm);
 786         seq_printf(m, "  seqno: 0x%08x\n", error->seqno);
 787
 788         for (i = 0; i < dev_priv->num_fence_regs; i++)
 789                 seq_printf(m, "  fence[%d] = %08llx\n", i, error->fence[i]);
 790
 791         if (error->active_bo)
 792                 print_error_buffers(m, "Active",
 793                                     error->active_bo,
 794                                     error->active_bo_count);
 795
 796         if (error->pinned_bo)
 797                 print_error_buffers(m, "Pinned",
 798                                     error->pinned_bo,
 799                                     error->pinned_bo_count);
 800
 801         for (i = 0; i < ARRAY_SIZE(error->batchbuffer); i++) {
 802                 if (error->batchbuffer[i]) {
 803                         struct drm_i915_error_object *obj = error->batchbuffer[i];
 804
 805                         seq_printf(m, "%s --- gtt_offset = 0x%08x\n",
 806                                    dev_priv->ring[i].name,
 807                                    obj->gtt_offset);
 808                         offset = 0;
 809                         for (page = 0; page < obj->page_count; page++) {
 810                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 811                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 812                                         offset += 4;
 813                                 }
 814                         }
 815                 }
 816         }
 817
 818         for (i = 0; i < ARRAY_SIZE(error->ringbuffer); i++) {
 819                 if (error->ringbuffer[i]) {
 820                         struct drm_i915_error_object *obj = error->ringbuffer[i];
 821                         seq_printf(m, "%s --- ringbuffer = 0x%08x\n",
 822                                    dev_priv->ring[i].name,
 823                                    obj->gtt_offset);
 824                         offset = 0;
 825                         for (page = 0; page < obj->page_count; page++) {
 826                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 827                                         seq_printf(m, "%08x :  %08x\n",
 828                                                    offset,
 829                                                    obj->pages[page][elt]);
 830                                         offset += 4;
 831                                 }
 832                         }
 833                 }
 834         }
 835
 836         if (error->overlay)
 837                 intel_overlay_print_error_state(m, error->overlay);
 838
 839         if (error->display)
 840                 intel_display_print_error_state(m, dev, error->display);
 841
 842 out:
 843         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
 844
 845         return 0;
 846 }
 847
 848 static int i915_rstdby_delays(struct seq_file *m, void *unused)
 849 {
 850         struct drm_info_node *node = (struct drm_info_node *) m->private;
 851         struct drm_device *dev = node->minor->dev;
 852         drm_i915_private_t *dev_priv = dev->dev_private;
 853         u16 crstanddelay;
 854         int ret;
 855
 856         ret = mutex_lock_interruptible(&dev->struct_mutex);
 857         if (ret)
 858                 return ret;
 859
 860         crstanddelay = I915_READ16(CRSTANDVID);
 861
 862         mutex_unlock(&dev->struct_mutex);
 863
 864         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
 865
 866         return 0;
 867 }
 868
 869 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
 870 {
 871         struct drm_info_node *node = (struct drm_info_node *) m->private;
 872         struct drm_device *dev = node->minor->dev;
 873         drm_i915_private_t *dev_priv = dev->dev_private;
 874         int ret;
 875
 876         if (IS_GEN5(dev)) {
 877                 u16 rgvswctl = I915_READ16(MEMSWCTL);
 878                 u16 rgvstat = I915_READ16(MEMSTAT_ILK);
 879
 880                 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 881                 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
 882                 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 883                            MEMSTAT_VID_SHIFT);
 884                 seq_printf(m, "Current P-state: %d\n",
 885                            (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
 886         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
 887                 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
 888                 u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
 889                 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
 890                 u32 rpstat;
 891                 u32 rpupei, rpcurup, rpprevup;
 892                 u32 rpdownei, rpcurdown, rpprevdown;
 893                 int max_freq;
 894
 895                 /* RPSTAT1 is in the GT power well */
 896                 ret = mutex_lock_interruptible(&dev->struct_mutex);
 897                 if (ret)
 898                         return ret;
 899
 900                 gen6_gt_force_wake_get(dev_priv);
 901
 902                 rpstat = I915_READ(GEN6_RPSTAT1);
 903                 rpupei = I915_READ(GEN6_RP_CUR_UP_EI);
 904                 rpcurup = I915_READ(GEN6_RP_CUR_UP);
 905                 rpprevup = I915_READ(GEN6_RP_PREV_UP);
 906                 rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI);
 907                 rpcurdown = I915_READ(GEN6_RP_CUR_DOWN);
 908                 rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
 909
 910                 gen6_gt_force_wake_put(dev_priv);
 911                 mutex_unlock(&dev->struct_mutex);
 912
 913                 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
 914                 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
 915                 seq_printf(m, "Render p-state ratio: %d\n",
 916                            (gt_perf_status & 0xff00) >> 8);
 917                 seq_printf(m, "Render p-state VID: %d\n",
 918                            gt_perf_status & 0xff);
 919                 seq_printf(m, "Render p-state limit: %d\n",
 920                            rp_state_limits & 0xff);
 921                 seq_printf(m, "CAGF: %dMHz\n", ((rpstat & GEN6_CAGF_MASK) >>
 922                                                 GEN6_CAGF_SHIFT) * 50);
 923                 seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
 924                            GEN6_CURICONT_MASK);
 925                 seq_printf(m, "RP CUR UP: %dus\n", rpcurup &
 926                            GEN6_CURBSYTAVG_MASK);
 927                 seq_printf(m, "RP PREV UP: %dus\n", rpprevup &
 928                            GEN6_CURBSYTAVG_MASK);
 929                 seq_printf(m, "RP CUR DOWN EI: %dus\n", rpdownei &
 930                            GEN6_CURIAVG_MASK);
 931                 seq_printf(m, "RP CUR DOWN: %dus\n", rpcurdown &
 932                            GEN6_CURBSYTAVG_MASK);
 933                 seq_printf(m, "RP PREV DOWN: %dus\n", rpprevdown &
 934                            GEN6_CURBSYTAVG_MASK);
 935
 936                 max_freq = (rp_state_cap & 0xff0000) >> 16;
 937                 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
 938                            max_freq * 50);
 939
 940                 max_freq = (rp_state_cap & 0xff00) >> 8;
 941                 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
 942                            max_freq * 50);
 943
 944                 max_freq = rp_state_cap & 0xff;
 945                 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
 946                            max_freq * 50);
 947         } else {
 948                 seq_printf(m, "no P-state info available\n");
 949         }
 950
 951         return 0;
 952 }
 953
 954 static int i915_delayfreq_table(struct seq_file *m, void *unused)
 955 {
 956         struct drm_info_node *node = (struct drm_info_node *) m->private;
 957         struct drm_device *dev = node->minor->dev;
 958         drm_i915_private_t *dev_priv = dev->dev_private;
 959         u32 delayfreq;
 960         int ret, i;
 961
 962         ret = mutex_lock_interruptible(&dev->struct_mutex);
 963         if (ret)
 964                 return ret;
 965
 966         for (i = 0; i < 16; i++) {
 967                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
 968                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
 969                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
 970         }
 971
 972         mutex_unlock(&dev->struct_mutex);
 973
 974         return 0;
 975 }
 976
 977 static inline int MAP_TO_MV(int map)
 978 {
 979         return 1250 - (map * 25);
 980 }
 981
 982 static int i915_inttoext_table(struct seq_file *m, void *unused)
 983 {
 984         struct drm_info_node *node = (struct drm_info_node *) m->private;
 985         struct drm_device *dev = node->minor->dev;
 986         drm_i915_private_t *dev_priv = dev->dev_private;
 987         u32 inttoext;
 988         int ret, i;
 989
 990         ret = mutex_lock_interruptible(&dev->struct_mutex);
 991         if (ret)
 992                 return ret;
 993
 994         for (i = 1; i <= 32; i++) {
 995                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
 996                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
 997         }
 998
 999         mutex_unlock(&dev->struct_mutex);
1000
1001         return 0;
1002 }
1003
1004 static int i915_drpc_info(struct seq_file *m, void *unused)
1005 {
1006         struct drm_info_node *node = (struct drm_info_node *) m->private;
1007         struct drm_device *dev = node->minor->dev;
1008         drm_i915_private_t *dev_priv = dev->dev_private;
1009         u32 rgvmodectl, rstdbyctl;
1010         u16 crstandvid;
1011         int ret;
1012
1013         ret = mutex_lock_interruptible(&dev->struct_mutex);
1014         if (ret)
1015                 return ret;
1016
1017         rgvmodectl = I915_READ(MEMMODECTL);
1018         rstdbyctl = I915_READ(RSTDBYCTL);
1019         crstandvid = I915_READ16(CRSTANDVID);
1020
1021         mutex_unlock(&dev->struct_mutex);
1022
1023         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
1024                    "yes" : "no");
1025         seq_printf(m, "Boost freq: %d\n",
1026                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
1027                    MEMMODE_BOOST_FREQ_SHIFT);
1028         seq_printf(m, "HW control enabled: %s\n",
1029                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
1030         seq_printf(m, "SW control enabled: %s\n",
1031                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
1032         seq_printf(m, "Gated voltage change: %s\n",
1033                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
1034         seq_printf(m, "Starting frequency: P%d\n",
1035                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
1036         seq_printf(m, "Max P-state: P%d\n",
1037                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
1038         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
1039         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
1040         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
1041         seq_printf(m, "Render standby enabled: %s\n",
1042                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
1043         seq_printf(m, "Current RS state: ");
1044         switch (rstdbyctl & RSX_STATUS_MASK) {
1045         case RSX_STATUS_ON:
1046                 seq_printf(m, "on\n");
1047                 break;
1048         case RSX_STATUS_RC1:
1049                 seq_printf(m, "RC1\n");
1050                 break;
1051         case RSX_STATUS_RC1E:
1052                 seq_printf(m, "RC1E\n");
1053                 break;
1054         case RSX_STATUS_RS1:
1055                 seq_printf(m, "RS1\n");
1056                 break;
1057         case RSX_STATUS_RS2:
1058                 seq_printf(m, "RS2 (RC6)\n");
1059                 break;
1060         case RSX_STATUS_RS3:
1061                 seq_printf(m, "RC3 (RC6+)\n");
1062                 break;
1063         default:
1064                 seq_printf(m, "unknown\n");
1065                 break;
1066         }
1067
1068         return 0;
1069 }
1070
1071 static int i915_fbc_status(struct seq_file *m, void *unused)
1072 {
1073         struct drm_info_node *node = (struct drm_info_node *) m->private;
1074         struct drm_device *dev = node->minor->dev;
1075         drm_i915_private_t *dev_priv = dev->dev_private;
1076
1077         if (!I915_HAS_FBC(dev)) {
1078                 seq_printf(m, "FBC unsupported on this chipset\n");
1079                 return 0;
1080         }
1081
1082         if (intel_fbc_enabled(dev)) {
1083                 seq_printf(m, "FBC enabled\n");
1084         } else {
1085                 seq_printf(m, "FBC disabled: ");
1086                 switch (dev_priv->no_fbc_reason) {
1087                 case FBC_NO_OUTPUT:
1088                         seq_printf(m, "no outputs");
1089                         break;
1090                 case FBC_STOLEN_TOO_SMALL:
1091                         seq_printf(m, "not enough stolen memory");
1092                         break;
1093                 case FBC_UNSUPPORTED_MODE:
1094                         seq_printf(m, "mode not supported");
1095                         break;
1096                 case FBC_MODE_TOO_LARGE:
1097                         seq_printf(m, "mode too large");
1098                         break;
1099                 case FBC_BAD_PLANE:
1100                         seq_printf(m, "FBC unsupported on plane");
1101                         break;
1102                 case FBC_NOT_TILED:
1103                         seq_printf(m, "scanout buffer not tiled");
1104                         break;
1105                 case FBC_MULTIPLE_PIPES:
1106                         seq_printf(m, "multiple pipes are enabled");
1107                         break;
1108                 case FBC_MODULE_PARAM:
1109                         seq_printf(m, "disabled per module param (default off)");
1110                         break;
1111                 default:
1112                         seq_printf(m, "unknown reason");
1113                 }
1114                 seq_printf(m, "\n");
1115         }
1116         return 0;
1117 }
1118
1119 static int i915_sr_status(struct seq_file *m, void *unused)
1120 {
1121         struct drm_info_node *node = (struct drm_info_node *) m->private;
1122         struct drm_device *dev = node->minor->dev;
1123         drm_i915_private_t *dev_priv = dev->dev_private;
1124         bool sr_enabled = false;
1125
1126         if (HAS_PCH_SPLIT(dev))
1127                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1128         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
1129                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1130         else if (IS_I915GM(dev))
1131                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1132         else if (IS_PINEVIEW(dev))
1133                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1134
1135         seq_printf(m, "self-refresh: %s\n",
1136                    sr_enabled ? "enabled" : "disabled");
1137
1138         return 0;
1139 }
1140
1141 static int i915_emon_status(struct seq_file *m, void *unused)
1142 {
1143         struct drm_info_node *node = (struct drm_info_node *) m->private;
1144         struct drm_device *dev = node->minor->dev;
1145         drm_i915_private_t *dev_priv = dev->dev_private;
1146         unsigned long temp, chipset, gfx;
1147         int ret;
1148
1149         ret = mutex_lock_interruptible(&dev->struct_mutex);
1150         if (ret)
1151                 return ret;
1152
1153         temp = i915_mch_val(dev_priv);
1154         chipset = i915_chipset_val(dev_priv);
1155         gfx = i915_gfx_val(dev_priv);
1156         mutex_unlock(&dev->struct_mutex);
1157
1158         seq_printf(m, "GMCH temp: %ld\n", temp);
1159         seq_printf(m, "Chipset power: %ld\n", chipset);
1160         seq_printf(m, "GFX power: %ld\n", gfx);
1161         seq_printf(m, "Total power: %ld\n", chipset + gfx);
1162
1163         return 0;
1164 }
1165
1166 static int i915_ring_freq_table(struct seq_file *m, void *unused)
1167 {
1168         struct drm_info_node *node = (struct drm_info_node *) m->private;
1169         struct drm_device *dev = node->minor->dev;
1170         drm_i915_private_t *dev_priv = dev->dev_private;
1171         int ret;
1172         int gpu_freq, ia_freq;
1173
1174         if (!(IS_GEN6(dev) || IS_GEN7(dev))) {
1175                 seq_printf(m, "unsupported on this chipset\n");
1176                 return 0;
1177         }
1178
1179         ret = mutex_lock_interruptible(&dev->struct_mutex);
1180         if (ret)
1181                 return ret;
1182
1183         seq_printf(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\n");
1184
1185         for (gpu_freq = dev_priv->min_delay; gpu_freq <= dev_priv->max_delay;
1186              gpu_freq++) {
1187                 I915_WRITE(GEN6_PCODE_DATA, gpu_freq);
1188                 I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY |
1189                            GEN6_PCODE_READ_MIN_FREQ_TABLE);
1190                 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) &
1191                               GEN6_PCODE_READY) == 0, 10)) {
1192                         DRM_ERROR("pcode read of freq table timed out\n");
1193                         continue;
1194                 }
1195                 ia_freq = I915_READ(GEN6_PCODE_DATA);
1196                 seq_printf(m, "%d\t\t%d\n", gpu_freq * 50, ia_freq * 100);
1197         }
1198
1199         mutex_unlock(&dev->struct_mutex);
1200
1201         return 0;
1202 }
1203
1204 static int i915_gfxec(struct seq_file *m, void *unused)
1205 {
1206         struct drm_info_node *node = (struct drm_info_node *) m->private;
1207         struct drm_device *dev = node->minor->dev;
1208         drm_i915_private_t *dev_priv = dev->dev_private;
1209         int ret;
1210
1211         ret = mutex_lock_interruptible(&dev->struct_mutex);
1212         if (ret)
1213                 return ret;
1214
1215         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
1216
1217         mutex_unlock(&dev->struct_mutex);
1218
1219         return 0;
1220 }
1221
1222 static int i915_opregion(struct seq_file *m, void *unused)
1223 {
1224         struct drm_info_node *node = (struct drm_info_node *) m->private;
1225         struct drm_device *dev = node->minor->dev;
1226         drm_i915_private_t *dev_priv = dev->dev_private;
1227         struct intel_opregion *opregion = &dev_priv->opregion;
1228         int ret;
1229
1230         ret = mutex_lock_interruptible(&dev->struct_mutex);
1231         if (ret)
1232                 return ret;
1233
1234         if (opregion->header)
1235                 seq_write(m, opregion->header, OPREGION_SIZE);
1236
1237         mutex_unlock(&dev->struct_mutex);
1238
1239         return 0;
1240 }
1241
1242 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
1243 {
1244         struct drm_info_node *node = (struct drm_info_node *) m->private;
1245         struct drm_device *dev = node->minor->dev;
1246         drm_i915_private_t *dev_priv = dev->dev_private;
1247         struct intel_fbdev *ifbdev;
1248         struct intel_framebuffer *fb;
1249         int ret;
1250
1251         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1252         if (ret)
1253                 return ret;
1254
1255         ifbdev = dev_priv->fbdev;
1256         fb = to_intel_framebuffer(ifbdev->helper.fb);
1257
1258         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
1259                    fb->base.width,
1260                    fb->base.height,
1261                    fb->base.depth,
1262                    fb->base.bits_per_pixel);
1263         describe_obj(m, fb->obj);
1264         seq_printf(m, "\n");
1265
1266         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
1267                 if (&fb->base == ifbdev->helper.fb)
1268                         continue;
1269
1270                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
1271                            fb->base.width,
1272                            fb->base.height,
1273                            fb->base.depth,
1274                            fb->base.bits_per_pixel);
1275                 describe_obj(m, fb->obj);
1276                 seq_printf(m, "\n");
1277         }
1278
1279         mutex_unlock(&dev->mode_config.mutex);
1280
1281         return 0;
1282 }
1283
1284 static int i915_context_status(struct seq_file *m, void *unused)
1285 {
1286         struct drm_info_node *node = (struct drm_info_node *) m->private;
1287         struct drm_device *dev = node->minor->dev;
1288         drm_i915_private_t *dev_priv = dev->dev_private;
1289         int ret;
1290
1291         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1292         if (ret)
1293                 return ret;
1294
1295         if (dev_priv->pwrctx) {
1296                 seq_printf(m, "power context ");
1297                 describe_obj(m, dev_priv->pwrctx);
1298                 seq_printf(m, "\n");
1299         }
1300
1301         if (dev_priv->renderctx) {
1302                 seq_printf(m, "render context ");
1303                 describe_obj(m, dev_priv->renderctx);
1304                 seq_printf(m, "\n");
1305         }
1306
1307         mutex_unlock(&dev->mode_config.mutex);
1308
1309         return 0;
1310 }
1311
1312 static int i915_gen6_forcewake_count_info(struct seq_file *m, void *data)
1313 {
1314         struct drm_info_node *node = (struct drm_info_node *) m->private;
1315         struct drm_device *dev = node->minor->dev;
1316         struct drm_i915_private *dev_priv = dev->dev_private;
1317
1318         seq_printf(m, "forcewake count = %d\n",
1319                    atomic_read(&dev_priv->forcewake_count));
1320
1321         return 0;
1322 }
1323
1324 static int
1325 i915_wedged_open(struct inode *inode,
1326                  struct file *filp)
1327 {
1328         filp->private_data = inode->i_private;
1329         return 0;
1330 }
1331
1332 static ssize_t
1333 i915_wedged_read(struct file *filp,
1334                  char __user *ubuf,
1335                  size_t max,
1336                  loff_t *ppos)
1337 {
1338         struct drm_device *dev = filp->private_data;
1339         drm_i915_private_t *dev_priv = dev->dev_private;
1340         char buf[80];
1341         int len;
1342
1343         len = snprintf(buf, sizeof(buf),
1344                        "wedged :  %d\n",
1345                        atomic_read(&dev_priv->mm.wedged));
1346
1347         if (len > sizeof(buf))
1348                 len = sizeof(buf);
1349
1350         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1351 }
1352
1353 static ssize_t
1354 i915_wedged_write(struct file *filp,
1355                   const char __user *ubuf,
1356                   size_t cnt,
1357                   loff_t *ppos)
1358 {
1359         struct drm_device *dev = filp->private_data;
1360         char buf[20];
1361         int val = 1;
1362
1363         if (cnt > 0) {
1364                 if (cnt > sizeof(buf) - 1)
1365                         return -EINVAL;
1366
1367                 if (copy_from_user(buf, ubuf, cnt))
1368                         return -EFAULT;
1369                 buf[cnt] = 0;
1370
1371                 val = simple_strtoul(buf, NULL, 0);
1372         }
1373
1374         DRM_INFO("Manually setting wedged to %d\n", val);
1375         i915_handle_error(dev, val);
1376
1377         return cnt;
1378 }
1379
1380 static const struct file_operations i915_wedged_fops = {
1381         .owner = THIS_MODULE,
1382         .open = i915_wedged_open,
1383         .read = i915_wedged_read,
1384         .write = i915_wedged_write,
1385         .llseek = default_llseek,
1386 };
1387
1388 static int
1389 i915_max_freq_open(struct inode *inode,
1390                    struct file *filp)
1391 {
1392         filp->private_data = inode->i_private;
1393         return 0;
1394 }
1395
1396 static ssize_t
1397 i915_max_freq_read(struct file *filp,
1398                    char __user *ubuf,
1399                    size_t max,
1400                    loff_t *ppos)
1401 {
1402         struct drm_device *dev = filp->private_data;
1403         drm_i915_private_t *dev_priv = dev->dev_private;
1404         char buf[80];
1405         int len;
1406
1407         len = snprintf(buf, sizeof(buf),
1408                        "max freq: %d\n", dev_priv->max_delay * 50);
1409
1410         if (len > sizeof(buf))
1411                 len = sizeof(buf);
1412
1413         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1414 }
1415
1416 static ssize_t
1417 i915_max_freq_write(struct file *filp,
1418                   const char __user *ubuf,
1419                   size_t cnt,
1420                   loff_t *ppos)
1421 {
1422         struct drm_device *dev = filp->private_data;
1423         struct drm_i915_private *dev_priv = dev->dev_private;
1424         char buf[20];
1425         int val = 1;
1426
1427         if (cnt > 0) {
1428                 if (cnt > sizeof(buf) - 1)
1429                         return -EINVAL;
1430
1431                 if (copy_from_user(buf, ubuf, cnt))
1432                         return -EFAULT;
1433                 buf[cnt] = 0;
1434
1435                 val = simple_strtoul(buf, NULL, 0);
1436         }
1437
1438         DRM_DEBUG_DRIVER("Manually setting max freq to %d\n", val);
1439
1440         /*
1441          * Turbo will still be enabled, but won't go above the set value.
1442          */
1443         dev_priv->max_delay = val / 50;
1444
1445         gen6_set_rps(dev, val / 50);
1446
1447         return cnt;
1448 }
1449
1450 static const struct file_operations i915_max_freq_fops = {
1451         .owner = THIS_MODULE,
1452         .open = i915_max_freq_open,
1453         .read = i915_max_freq_read,
1454         .write = i915_max_freq_write,
1455         .llseek = default_llseek,
1456 };
1457
1458 static int
1459 i915_cache_sharing_open(struct inode *inode,
1460                    struct file *filp)
1461 {
1462         filp->private_data = inode->i_private;
1463         return 0;
1464 }
1465
1466 static ssize_t
1467 i915_cache_sharing_read(struct file *filp,
1468                    char __user *ubuf,
1469                    size_t max,
1470                    loff_t *ppos)
1471 {
1472         struct drm_device *dev = filp->private_data;
1473         drm_i915_private_t *dev_priv = dev->dev_private;
1474         char buf[80];
1475         u32 snpcr;
1476         int len;
1477
1478         mutex_lock(&dev_priv->dev->struct_mutex);
1479         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1480         mutex_unlock(&dev_priv->dev->struct_mutex);
1481
1482         len = snprintf(buf, sizeof(buf),
1483                        "%d\n", (snpcr & GEN6_MBC_SNPCR_MASK) >>
1484                        GEN6_MBC_SNPCR_SHIFT);
1485
1486         if (len > sizeof(buf))
1487                 len = sizeof(buf);
1488
1489         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1490 }
1491
1492 static ssize_t
1493 i915_cache_sharing_write(struct file *filp,
1494                   const char __user *ubuf,
1495                   size_t cnt,
1496                   loff_t *ppos)
1497 {
1498         struct drm_device *dev = filp->private_data;
1499         struct drm_i915_private *dev_priv = dev->dev_private;
1500         char buf[20];
1501         u32 snpcr;
1502         int val = 1;
1503
1504         if (cnt > 0) {
1505                 if (cnt > sizeof(buf) - 1)
1506                         return -EINVAL;
1507
1508                 if (copy_from_user(buf, ubuf, cnt))
1509                         return -EFAULT;
1510                 buf[cnt] = 0;
1511
1512                 val = simple_strtoul(buf, NULL, 0);
1513         }
1514
1515         if (val < 0 || val > 3)
1516                 return -EINVAL;
1517
1518         DRM_DEBUG_DRIVER("Manually setting uncore sharing to %d\n", val);
1519
1520         /* Update the cache sharing policy here as well */
1521         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1522         snpcr &= ~GEN6_MBC_SNPCR_MASK;
1523         snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
1524         I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
1525
1526         return cnt;
1527 }
1528
1529 static const struct file_operations i915_cache_sharing_fops = {
1530         .owner = THIS_MODULE,
1531         .open = i915_cache_sharing_open,
1532         .read = i915_cache_sharing_read,
1533         .write = i915_cache_sharing_write,
1534         .llseek = default_llseek,
1535 };
1536
1537 /* As the drm_debugfs_init() routines are called before dev->dev_private is
1538  * allocated we need to hook into the minor for release. */
1539 static int
1540 drm_add_fake_info_node(struct drm_minor *minor,
1541                        struct dentry *ent,
1542                        const void *key)
1543 {
1544         struct drm_info_node *node;
1545
1546         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
1547         if (node == NULL) {
1548                 debugfs_remove(ent);
1549                 return -ENOMEM;
1550         }
1551
1552         node->minor = minor;
1553         node->dent = ent;
1554         node->info_ent = (void *) key;
1555
1556         mutex_lock(&minor->debugfs_lock);
1557         list_add(&node->list, &minor->debugfs_list);
1558         mutex_unlock(&minor->debugfs_lock);
1559
1560         return 0;
1561 }
1562
1563 static int i915_wedged_create(struct dentry *root, struct drm_minor *minor)
1564 {
1565         struct drm_device *dev = minor->dev;
1566         struct dentry *ent;
1567
1568         ent = debugfs_create_file("i915_wedged",
1569                                   S_IRUGO | S_IWUSR,
1570                                   root, dev,
1571                                   &i915_wedged_fops);
1572         if (IS_ERR(ent))
1573                 return PTR_ERR(ent);
1574
1575         return drm_add_fake_info_node(minor, ent, &i915_wedged_fops);
1576 }
1577
1578 static int i915_forcewake_open(struct inode *inode, struct file *file)
1579 {
1580         struct drm_device *dev = inode->i_private;
1581         struct drm_i915_private *dev_priv = dev->dev_private;
1582         int ret;
1583
1584         if (!IS_GEN6(dev))
1585                 return 0;
1586
1587         ret = mutex_lock_interruptible(&dev->struct_mutex);
1588         if (ret)
1589                 return ret;
1590         gen6_gt_force_wake_get(dev_priv);
1591         mutex_unlock(&dev->struct_mutex);
1592
1593         return 0;
1594 }
1595
1596 int i915_forcewake_release(struct inode *inode, struct file *file)
1597 {
1598         struct drm_device *dev = inode->i_private;
1599         struct drm_i915_private *dev_priv = dev->dev_private;
1600
1601         if (!IS_GEN6(dev))
1602                 return 0;
1603
1604         /*
1605          * It's bad that we can potentially hang userspace if struct_mutex gets
1606          * forever stuck.  However, if we cannot acquire this lock it means that
1607          * almost certainly the driver has hung, is not unload-able. Therefore
1608          * hanging here is probably a minor inconvenience not to be seen my
1609          * almost every user.
1610          */
1611         mutex_lock(&dev->struct_mutex);
1612         gen6_gt_force_wake_put(dev_priv);
1613         mutex_unlock(&dev->struct_mutex);
1614
1615         return 0;
1616 }
1617
1618 static const struct file_operations i915_forcewake_fops = {
1619         .owner = THIS_MODULE,
1620         .open = i915_forcewake_open,
1621         .release = i915_forcewake_release,
1622 };
1623
1624 static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
1625 {
1626         struct drm_device *dev = minor->dev;
1627         struct dentry *ent;
1628
1629         ent = debugfs_create_file("i915_forcewake_user",
1630                                   S_IRUSR,
1631                                   root, dev,
1632                                   &i915_forcewake_fops);
1633         if (IS_ERR(ent))
1634                 return PTR_ERR(ent);
1635
1636         return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
1637 }
1638
1639 static int i915_max_freq_create(struct dentry *root, struct drm_minor *minor)
1640 {
1641         struct drm_device *dev = minor->dev;
1642         struct dentry *ent;
1643
1644         ent = debugfs_create_file("i915_max_freq",
1645                                   S_IRUGO | S_IWUSR,
1646                                   root, dev,
1647                                   &i915_max_freq_fops);
1648         if (IS_ERR(ent))
1649                 return PTR_ERR(ent);
1650
1651         return drm_add_fake_info_node(minor, ent, &i915_max_freq_fops);
1652 }
1653
1654 static int i915_cache_sharing_create(struct dentry *root, struct drm_minor *minor)
1655 {
1656         struct drm_device *dev = minor->dev;
1657         struct dentry *ent;
1658
1659         ent = debugfs_create_file("i915_cache_sharing",
1660                                   S_IRUGO | S_IWUSR,
1661                                   root, dev,
1662                                   &i915_cache_sharing_fops);
1663         if (IS_ERR(ent))
1664                 return PTR_ERR(ent);
1665
1666         return drm_add_fake_info_node(minor, ent, &i915_cache_sharing_fops);
1667 }
1668
1669 static struct drm_info_list i915_debugfs_list[] = {
1670         {"i915_capabilities", i915_capabilities, 0},
1671         {"i915_gem_objects", i915_gem_object_info, 0},
1672         {"i915_gem_gtt", i915_gem_gtt_info, 0},
1673         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
1674         {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
1675         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
1676         {"i915_gem_pinned", i915_gem_object_list_info, 0, (void *) PINNED_LIST},
1677         {"i915_gem_deferred_free", i915_gem_object_list_info, 0, (void *) DEFERRED_FREE_LIST},
1678         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
1679         {"i915_gem_request", i915_gem_request_info, 0},
1680         {"i915_gem_seqno", i915_gem_seqno_info, 0},
1681         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
1682         {"i915_gem_interrupt", i915_interrupt_info, 0},
1683         {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
1684         {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
1685         {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
1686         {"i915_ringbuffer_data", i915_ringbuffer_data, 0, (void *)RCS},
1687         {"i915_ringbuffer_info", i915_ringbuffer_info, 0, (void *)RCS},
1688         {"i915_bsd_ringbuffer_data", i915_ringbuffer_data, 0, (void *)VCS},
1689         {"i915_bsd_ringbuffer_info", i915_ringbuffer_info, 0, (void *)VCS},
1690         {"i915_blt_ringbuffer_data", i915_ringbuffer_data, 0, (void *)BCS},
1691         {"i915_blt_ringbuffer_info", i915_ringbuffer_info, 0, (void *)BCS},
1692         {"i915_batchbuffers", i915_batchbuffer_info, 0},
1693         {"i915_error_state", i915_error_state, 0},
1694         {"i915_rstdby_delays", i915_rstdby_delays, 0},
1695         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
1696         {"i915_delayfreq_table", i915_delayfreq_table, 0},
1697         {"i915_inttoext_table", i915_inttoext_table, 0},
1698         {"i915_drpc_info", i915_drpc_info, 0},
1699         {"i915_emon_status", i915_emon_status, 0},
1700         {"i915_ring_freq_table", i915_ring_freq_table, 0},
1701         {"i915_gfxec", i915_gfxec, 0},
1702         {"i915_fbc_status", i915_fbc_status, 0},
1703         {"i915_sr_status", i915_sr_status, 0},
1704         {"i915_opregion", i915_opregion, 0},
1705         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
1706         {"i915_context_status", i915_context_status, 0},
1707         {"i915_gen6_forcewake_count", i915_gen6_forcewake_count_info, 0},
1708 };
1709 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
1710
1711 int i915_debugfs_init(struct drm_minor *minor)
1712 {
1713         int ret;
1714
1715         ret = i915_wedged_create(minor->debugfs_root, minor);
1716         if (ret)
1717                 return ret;
1718
1719         ret = i915_forcewake_create(minor->debugfs_root, minor);
1720         if (ret)
1721                 return ret;
1722         ret = i915_max_freq_create(minor->debugfs_root, minor);
1723         if (ret)
1724                 return ret;
1725         ret = i915_cache_sharing_create(minor->debugfs_root, minor);
1726         if (ret)
1727                 return ret;
1728
1729         return drm_debugfs_create_files(i915_debugfs_list,
1730                                         I915_DEBUGFS_ENTRIES,
1731                                         minor->debugfs_root, minor);
1732 }
1733
1734 void i915_debugfs_cleanup(struct drm_minor *minor)
1735 {
1736         drm_debugfs_remove_files(i915_debugfs_list,
1737                                  I915_DEBUGFS_ENTRIES, minor);
1738         drm_debugfs_remove_files((struct drm_info_list *) &i915_forcewake_fops,
1739                                  1, minor);
1740         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
1741                                  1, minor);
1742         drm_debugfs_remove_files((struct drm_info_list *) &i915_max_freq_fops,
1743                                  1, minor);
1744         drm_debugfs_remove_files((struct drm_info_list *) &i915_cache_sharing_fops,
1745                                  1, minor);
1746 }
1747
1748 #endif /* CONFIG_DEBUG_FS */