drivers/gpu/drm/i915/i915_debugfs.c

   1 /*
   2  * Copyright © 2008 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *    Eric Anholt <eric@anholt.net>
  25  *    Keith Packard <keithp@keithp.com>
  26  *
  27  */
  28
  29 #include <linux/seq_file.h>
  30 #include <linux/debugfs.h>
  31 #include <linux/slab.h>
  32 #include <linux/export.h>
  33 #include "drmP.h"
  34 #include "drm.h"
  35 #include "intel_drv.h"
  36 #include "intel_ringbuffer.h"
  37 #include "i915_drm.h"
  38 #include "i915_drv.h"
  39
  40 #define DRM_I915_RING_DEBUG 1
  41
  42
  43 #if defined(CONFIG_DEBUG_FS)
  44
  45 enum {
  46         ACTIVE_LIST,
  47         FLUSHING_LIST,
  48         INACTIVE_LIST,
  49         PINNED_LIST,
  50         DEFERRED_FREE_LIST,
  51 };
  52
  53 static const char *yesno(int v)
  54 {
  55         return v ? "yes" : "no";
  56 }
  57
  58 static int i915_capabilities(struct seq_file *m, void *data)
  59 {
  60         struct drm_info_node *node = (struct drm_info_node *) m->private;
  61         struct drm_device *dev = node->minor->dev;
  62         const struct intel_device_info *info = INTEL_INFO(dev);
  63
  64         seq_printf(m, "gen: %d\n", info->gen);
  65         seq_printf(m, "pch: %d\n", INTEL_PCH_TYPE(dev));
  66 #define B(x) seq_printf(m, #x ": %s\n", yesno(info->x))
  67         B(is_mobile);
  68         B(is_i85x);
  69         B(is_i915g);
  70         B(is_i945gm);
  71         B(is_g33);
  72         B(need_gfx_hws);
  73         B(is_g4x);
  74         B(is_pineview);
  75         B(is_broadwater);
  76         B(is_crestline);
  77         B(has_fbc);
  78         B(has_pipe_cxsr);
  79         B(has_hotplug);
  80         B(cursor_needs_physical);
  81         B(has_overlay);
  82         B(overlay_needs_physical);
  83         B(supports_tv);
  84         B(has_bsd_ring);
  85         B(has_blt_ring);
  86         B(has_llc);
  87 #undef B
  88
  89         return 0;
  90 }
  91
  92 static const char *get_pin_flag(struct drm_i915_gem_object *obj)
  93 {
  94         if (obj->user_pin_count > 0)
  95                 return "P";
  96         else if (obj->pin_count > 0)
  97                 return "p";
  98         else
  99                 return " ";
 100 }
 101
 102 static const char *get_tiling_flag(struct drm_i915_gem_object *obj)
 103 {
 104         switch (obj->tiling_mode) {
 105         default:
 106         case I915_TILING_NONE: return " ";
 107         case I915_TILING_X: return "X";
 108         case I915_TILING_Y: return "Y";
 109         }
 110 }
 111
 112 static const char *cache_level_str(int type)
 113 {
 114         switch (type) {
 115         case I915_CACHE_NONE: return " uncached";
 116         case I915_CACHE_LLC: return " snooped (LLC)";
 117         case I915_CACHE_LLC_MLC: return " snooped (LLC+MLC)";
 118         default: return "";
 119         }
 120 }
 121
 122 static void
 123 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 124 {
 125         seq_printf(m, "%p: %s%s %8zdKiB %04x %04x %d %d%s%s%s",
 126                    &obj->base,
 127                    get_pin_flag(obj),
 128                    get_tiling_flag(obj),
 129                    obj->base.size / 1024,
 130                    obj->base.read_domains,
 131                    obj->base.write_domain,
 132                    obj->last_rendering_seqno,
 133                    obj->last_fenced_seqno,
 134                    cache_level_str(obj->cache_level),
 135                    obj->dirty ? " dirty" : "",
 136                    obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
 137         if (obj->base.name)
 138                 seq_printf(m, " (name: %d)", obj->base.name);
 139         if (obj->fence_reg != I915_FENCE_REG_NONE)
 140                 seq_printf(m, " (fence: %d)", obj->fence_reg);
 141         if (obj->gtt_space != NULL)
 142                 seq_printf(m, " (gtt offset: %08x, size: %08x)",
 143                            obj->gtt_offset, (unsigned int)obj->gtt_space->size);
 144         if (obj->pin_mappable || obj->fault_mappable) {
 145                 char s[3], *t = s;
 146                 if (obj->pin_mappable)
 147                         *t++ = 'p';
 148                 if (obj->fault_mappable)
 149                         *t++ = 'f';
 150                 *t = '\0';
 151                 seq_printf(m, " (%s mappable)", s);
 152         }
 153         if (obj->ring != NULL)
 154                 seq_printf(m, " (%s)", obj->ring->name);
 155 }
 156
 157 static int i915_gem_object_list_info(struct seq_file *m, void *data)
 158 {
 159         struct drm_info_node *node = (struct drm_info_node *) m->private;
 160         uintptr_t list = (uintptr_t) node->info_ent->data;
 161         struct list_head *head;
 162         struct drm_device *dev = node->minor->dev;
 163         drm_i915_private_t *dev_priv = dev->dev_private;
 164         struct drm_i915_gem_object *obj;
 165         size_t total_obj_size, total_gtt_size;
 166         int count, ret;
 167
 168         ret = mutex_lock_interruptible(&dev->struct_mutex);
 169         if (ret)
 170                 return ret;
 171
 172         switch (list) {
 173         case ACTIVE_LIST:
 174                 seq_printf(m, "Active:\n");
 175                 head = &dev_priv->mm.active_list;
 176                 break;
 177         case INACTIVE_LIST:
 178                 seq_printf(m, "Inactive:\n");
 179                 head = &dev_priv->mm.inactive_list;
 180                 break;
 181         case PINNED_LIST:
 182                 seq_printf(m, "Pinned:\n");
 183                 head = &dev_priv->mm.pinned_list;
 184                 break;
 185         case FLUSHING_LIST:
 186                 seq_printf(m, "Flushing:\n");
 187                 head = &dev_priv->mm.flushing_list;
 188                 break;
 189         case DEFERRED_FREE_LIST:
 190                 seq_printf(m, "Deferred free:\n");
 191                 head = &dev_priv->mm.deferred_free_list;
 192                 break;
 193         default:
 194                 mutex_unlock(&dev->struct_mutex);
 195                 return -EINVAL;
 196         }
 197
 198         total_obj_size = total_gtt_size = count = 0;
 199         list_for_each_entry(obj, head, mm_list) {
 200                 seq_printf(m, "   ");
 201                 describe_obj(m, obj);
 202                 seq_printf(m, "\n");
 203                 total_obj_size += obj->base.size;
 204                 total_gtt_size += obj->gtt_space->size;
 205                 count++;
 206         }
 207         mutex_unlock(&dev->struct_mutex);
 208
 209         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 210                    count, total_obj_size, total_gtt_size);
 211         return 0;
 212 }
 213
 214 #define count_objects(list, member) do { \
 215         list_for_each_entry(obj, list, member) { \
 216                 size += obj->gtt_space->size; \
 217                 ++count; \
 218                 if (obj->map_and_fenceable) { \
 219                         mappable_size += obj->gtt_space->size; \
 220                         ++mappable_count; \
 221                 } \
 222         } \
 223 } while (0)
 224
 225 static int i915_gem_object_info(struct seq_file *m, void* data)
 226 {
 227         struct drm_info_node *node = (struct drm_info_node *) m->private;
 228         struct drm_device *dev = node->minor->dev;
 229         struct drm_i915_private *dev_priv = dev->dev_private;
 230         u32 count, mappable_count;
 231         size_t size, mappable_size;
 232         struct drm_i915_gem_object *obj;
 233         int ret;
 234
 235         ret = mutex_lock_interruptible(&dev->struct_mutex);
 236         if (ret)
 237                 return ret;
 238
 239         seq_printf(m, "%u objects, %zu bytes\n",
 240                    dev_priv->mm.object_count,
 241                    dev_priv->mm.object_memory);
 242
 243         size = count = mappable_size = mappable_count = 0;
 244         count_objects(&dev_priv->mm.gtt_list, gtt_list);
 245         seq_printf(m, "%u [%u] objects, %zu [%zu] bytes in gtt\n",
 246                    count, mappable_count, size, mappable_size);
 247
 248         size = count = mappable_size = mappable_count = 0;
 249         count_objects(&dev_priv->mm.active_list, mm_list);
 250         count_objects(&dev_priv->mm.flushing_list, mm_list);
 251         seq_printf(m, "  %u [%u] active objects, %zu [%zu] bytes\n",
 252                    count, mappable_count, size, mappable_size);
 253
 254         size = count = mappable_size = mappable_count = 0;
 255         count_objects(&dev_priv->mm.pinned_list, mm_list);
 256         seq_printf(m, "  %u [%u] pinned objects, %zu [%zu] bytes\n",
 257                    count, mappable_count, size, mappable_size);
 258
 259         size = count = mappable_size = mappable_count = 0;
 260         count_objects(&dev_priv->mm.inactive_list, mm_list);
 261         seq_printf(m, "  %u [%u] inactive objects, %zu [%zu] bytes\n",
 262                    count, mappable_count, size, mappable_size);
 263
 264         size = count = mappable_size = mappable_count = 0;
 265         count_objects(&dev_priv->mm.deferred_free_list, mm_list);
 266         seq_printf(m, "  %u [%u] freed objects, %zu [%zu] bytes\n",
 267                    count, mappable_count, size, mappable_size);
 268
 269         size = count = mappable_size = mappable_count = 0;
 270         list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
 271                 if (obj->fault_mappable) {
 272                         size += obj->gtt_space->size;
 273                         ++count;
 274                 }
 275                 if (obj->pin_mappable) {
 276                         mappable_size += obj->gtt_space->size;
 277                         ++mappable_count;
 278                 }
 279         }
 280         seq_printf(m, "%u pinned mappable objects, %zu bytes\n",
 281                    mappable_count, mappable_size);
 282         seq_printf(m, "%u fault mappable objects, %zu bytes\n",
 283                    count, size);
 284
 285         seq_printf(m, "%zu [%zu] gtt total\n",
 286                    dev_priv->mm.gtt_total, dev_priv->mm.mappable_gtt_total);
 287
 288         mutex_unlock(&dev->struct_mutex);
 289
 290         return 0;
 291 }
 292
 293 static int i915_gem_gtt_info(struct seq_file *m, void* data)
 294 {
 295         struct drm_info_node *node = (struct drm_info_node *) m->private;
 296         struct drm_device *dev = node->minor->dev;
 297         struct drm_i915_private *dev_priv = dev->dev_private;
 298         struct drm_i915_gem_object *obj;
 299         size_t total_obj_size, total_gtt_size;
 300         int count, ret;
 301
 302         ret = mutex_lock_interruptible(&dev->struct_mutex);
 303         if (ret)
 304                 return ret;
 305
 306         total_obj_size = total_gtt_size = count = 0;
 307         list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
 308                 seq_printf(m, "   ");
 309                 describe_obj(m, obj);
 310                 seq_printf(m, "\n");
 311                 total_obj_size += obj->base.size;
 312                 total_gtt_size += obj->gtt_space->size;
 313                 count++;
 314         }
 315
 316         mutex_unlock(&dev->struct_mutex);
 317
 318         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 319                    count, total_obj_size, total_gtt_size);
 320
 321         return 0;
 322 }
 323
 324
 325 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
 326 {
 327         struct drm_info_node *node = (struct drm_info_node *) m->private;
 328         struct drm_device *dev = node->minor->dev;
 329         unsigned long flags;
 330         struct intel_crtc *crtc;
 331
 332         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
 333                 const char pipe = pipe_name(crtc->pipe);
 334                 const char plane = plane_name(crtc->plane);
 335                 struct intel_unpin_work *work;
 336
 337                 spin_lock_irqsave(&dev->event_lock, flags);
 338                 work = crtc->unpin_work;
 339                 if (work == NULL) {
 340                         seq_printf(m, "No flip due on pipe %c (plane %c)\n",
 341                                    pipe, plane);
 342                 } else {
 343                         if (!work->pending) {
 344                                 seq_printf(m, "Flip queued on pipe %c (plane %c)\n",
 345                                            pipe, plane);
 346                         } else {
 347                                 seq_printf(m, "Flip pending (waiting for vsync) on pipe %c (plane %c)\n",
 348                                            pipe, plane);
 349                         }
 350                         if (work->enable_stall_check)
 351                                 seq_printf(m, "Stall check enabled, ");
 352                         else
 353                                 seq_printf(m, "Stall check waiting for page flip ioctl, ");
 354                         seq_printf(m, "%d prepares\n", work->pending);
 355
 356                         if (work->old_fb_obj) {
 357                                 struct drm_i915_gem_object *obj = work->old_fb_obj;
 358                                 if (obj)
 359                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 360                         }
 361                         if (work->pending_flip_obj) {
 362                                 struct drm_i915_gem_object *obj = work->pending_flip_obj;
 363                                 if (obj)
 364                                         seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 365                         }
 366                 }
 367                 spin_unlock_irqrestore(&dev->event_lock, flags);
 368         }
 369
 370         return 0;
 371 }
 372
 373 static int i915_gem_request_info(struct seq_file *m, void *data)
 374 {
 375         struct drm_info_node *node = (struct drm_info_node *) m->private;
 376         struct drm_device *dev = node->minor->dev;
 377         drm_i915_private_t *dev_priv = dev->dev_private;
 378         struct drm_i915_gem_request *gem_request;
 379         int ret, count;
 380
 381         ret = mutex_lock_interruptible(&dev->struct_mutex);
 382         if (ret)
 383                 return ret;
 384
 385         count = 0;
 386         if (!list_empty(&dev_priv->ring[RCS].request_list)) {
 387                 seq_printf(m, "Render requests:\n");
 388                 list_for_each_entry(gem_request,
 389                                     &dev_priv->ring[RCS].request_list,
 390                                     list) {
 391                         seq_printf(m, "    %d @ %d\n",
 392                                    gem_request->seqno,
 393                                    (int) (jiffies - gem_request->emitted_jiffies));
 394                 }
 395                 count++;
 396         }
 397         if (!list_empty(&dev_priv->ring[VCS].request_list)) {
 398                 seq_printf(m, "BSD requests:\n");
 399                 list_for_each_entry(gem_request,
 400                                     &dev_priv->ring[VCS].request_list,
 401                                     list) {
 402                         seq_printf(m, "    %d @ %d\n",
 403                                    gem_request->seqno,
 404                                    (int) (jiffies - gem_request->emitted_jiffies));
 405                 }
 406                 count++;
 407         }
 408         if (!list_empty(&dev_priv->ring[BCS].request_list)) {
 409                 seq_printf(m, "BLT requests:\n");
 410                 list_for_each_entry(gem_request,
 411                                     &dev_priv->ring[BCS].request_list,
 412                                     list) {
 413                         seq_printf(m, "    %d @ %d\n",
 414                                    gem_request->seqno,
 415                                    (int) (jiffies - gem_request->emitted_jiffies));
 416                 }
 417                 count++;
 418         }
 419         mutex_unlock(&dev->struct_mutex);
 420
 421         if (count == 0)
 422                 seq_printf(m, "No requests\n");
 423
 424         return 0;
 425 }
 426
 427 static void i915_ring_seqno_info(struct seq_file *m,
 428                                  struct intel_ring_buffer *ring)
 429 {
 430         if (ring->get_seqno) {
 431                 seq_printf(m, "Current sequence (%s): %d\n",
 432                            ring->name, ring->get_seqno(ring));
 433                 seq_printf(m, "Waiter sequence (%s):  %d\n",
 434                            ring->name, ring->waiting_seqno);
 435                 seq_printf(m, "IRQ sequence (%s):     %d\n",
 436                            ring->name, ring->irq_seqno);
 437         }
 438 }
 439
 440 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 441 {
 442         struct drm_info_node *node = (struct drm_info_node *) m->private;
 443         struct drm_device *dev = node->minor->dev;
 444         drm_i915_private_t *dev_priv = dev->dev_private;
 445         int ret, i;
 446
 447         ret = mutex_lock_interruptible(&dev->struct_mutex);
 448         if (ret)
 449                 return ret;
 450
 451         for (i = 0; i < I915_NUM_RINGS; i++)
 452                 i915_ring_seqno_info(m, &dev_priv->ring[i]);
 453
 454         mutex_unlock(&dev->struct_mutex);
 455
 456         return 0;
 457 }
 458
 459
 460 static int i915_interrupt_info(struct seq_file *m, void *data)
 461 {
 462         struct drm_info_node *node = (struct drm_info_node *) m->private;
 463         struct drm_device *dev = node->minor->dev;
 464         drm_i915_private_t *dev_priv = dev->dev_private;
 465         int ret, i, pipe;
 466
 467         ret = mutex_lock_interruptible(&dev->struct_mutex);
 468         if (ret)
 469                 return ret;
 470
 471         if (IS_VALLEYVIEW(dev)) {
 472                 seq_printf(m, "Display IER:\t%08x\n",
 473                            I915_READ(VLV_IER));
 474                 seq_printf(m, "Display IIR:\t%08x\n",
 475                            I915_READ(VLV_IIR));
 476                 seq_printf(m, "Display IIR_RW:\t%08x\n",
 477                            I915_READ(VLV_IIR_RW));
 478                 seq_printf(m, "Display IMR:\t%08x\n",
 479                            I915_READ(VLV_IMR));
 480                 for_each_pipe(pipe)
 481                         seq_printf(m, "Pipe %c stat:\t%08x\n",
 482                                    pipe_name(pipe),
 483                                    I915_READ(PIPESTAT(pipe)));
 484
 485                 seq_printf(m, "Master IER:\t%08x\n",
 486                            I915_READ(VLV_MASTER_IER));
 487
 488                 seq_printf(m, "Render IER:\t%08x\n",
 489                            I915_READ(GTIER));
 490                 seq_printf(m, "Render IIR:\t%08x\n",
 491                            I915_READ(GTIIR));
 492                 seq_printf(m, "Render IMR:\t%08x\n",
 493                            I915_READ(GTIMR));
 494
 495                 seq_printf(m, "PM IER:\t\t%08x\n",
 496                            I915_READ(GEN6_PMIER));
 497                 seq_printf(m, "PM IIR:\t\t%08x\n",
 498                            I915_READ(GEN6_PMIIR));
 499                 seq_printf(m, "PM IMR:\t\t%08x\n",
 500                            I915_READ(GEN6_PMIMR));
 501
 502                 seq_printf(m, "Port hotplug:\t%08x\n",
 503                            I915_READ(PORT_HOTPLUG_EN));
 504                 seq_printf(m, "DPFLIPSTAT:\t%08x\n",
 505                            I915_READ(VLV_DPFLIPSTAT));
 506                 seq_printf(m, "DPINVGTT:\t%08x\n",
 507                            I915_READ(DPINVGTT));
 508
 509         } else if (!HAS_PCH_SPLIT(dev)) {
 510                 seq_printf(m, "Interrupt enable:    %08x\n",
 511                            I915_READ(IER));
 512                 seq_printf(m, "Interrupt identity:  %08x\n",
 513                            I915_READ(IIR));
 514                 seq_printf(m, "Interrupt mask:      %08x\n",
 515                            I915_READ(IMR));
 516                 for_each_pipe(pipe)
 517                         seq_printf(m, "Pipe %c stat:         %08x\n",
 518                                    pipe_name(pipe),
 519                                    I915_READ(PIPESTAT(pipe)));
 520         } else {
 521                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
 522                            I915_READ(DEIER));
 523                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
 524                            I915_READ(DEIIR));
 525                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
 526                            I915_READ(DEIMR));
 527                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
 528                            I915_READ(SDEIER));
 529                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
 530                            I915_READ(SDEIIR));
 531                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
 532                            I915_READ(SDEIMR));
 533                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
 534                            I915_READ(GTIER));
 535                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
 536                            I915_READ(GTIIR));
 537                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
 538                            I915_READ(GTIMR));
 539         }
 540         seq_printf(m, "Interrupts received: %d\n",
 541                    atomic_read(&dev_priv->irq_received));
 542         for (i = 0; i < I915_NUM_RINGS; i++) {
 543                 if (IS_GEN6(dev) || IS_GEN7(dev)) {
 544                         seq_printf(m, "Graphics Interrupt mask (%s):    %08x\n",
 545                                    dev_priv->ring[i].name,
 546                                    I915_READ_IMR(&dev_priv->ring[i]));
 547                 }
 548                 i915_ring_seqno_info(m, &dev_priv->ring[i]);
 549         }
 550         mutex_unlock(&dev->struct_mutex);
 551
 552         return 0;
 553 }
 554
 555 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 556 {
 557         struct drm_info_node *node = (struct drm_info_node *) m->private;
 558         struct drm_device *dev = node->minor->dev;
 559         drm_i915_private_t *dev_priv = dev->dev_private;
 560         int i, ret;
 561
 562         ret = mutex_lock_interruptible(&dev->struct_mutex);
 563         if (ret)
 564                 return ret;
 565
 566         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 567         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 568         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 569                 struct drm_i915_gem_object *obj = dev_priv->fence_regs[i].obj;
 570
 571                 seq_printf(m, "Fenced object[%2d] = ", i);
 572                 if (obj == NULL)
 573                         seq_printf(m, "unused");
 574                 else
 575                         describe_obj(m, obj);
 576                 seq_printf(m, "\n");
 577         }
 578
 579         mutex_unlock(&dev->struct_mutex);
 580         return 0;
 581 }
 582
 583 static int i915_hws_info(struct seq_file *m, void *data)
 584 {
 585         struct drm_info_node *node = (struct drm_info_node *) m->private;
 586         struct drm_device *dev = node->minor->dev;
 587         drm_i915_private_t *dev_priv = dev->dev_private;
 588         struct intel_ring_buffer *ring;
 589         const volatile u32 __iomem *hws;
 590         int i;
 591
 592         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 593         hws = (volatile u32 __iomem *)ring->status_page.page_addr;
 594         if (hws == NULL)
 595                 return 0;
 596
 597         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 598                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 599                            i * 4,
 600                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 601         }
 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) || IS_GEN7(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 RCS: return "render";
 672         case VCS: return "bsd";
 673         case BCS: 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%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                            err->ring != -1 ? " " : "",
 727                            ring_str(err->ring),
 728                            cache_level_str(err->cache_level));
 729
 730                 if (err->name)
 731                         seq_printf(m, " (name: %d)", err->name);
 732                 if (err->fence_reg != I915_FENCE_REG_NONE)
 733                         seq_printf(m, " (fence: %d)", err->fence_reg);
 734
 735                 seq_printf(m, "\n");
 736                 err++;
 737         }
 738 }
 739
 740 static void i915_ring_error_state(struct seq_file *m,
 741                                   struct drm_device *dev,
 742                                   struct drm_i915_error_state *error,
 743                                   unsigned ring)
 744 {
 745         BUG_ON(ring >= I915_NUM_RINGS); /* shut up confused gcc */
 746         seq_printf(m, "%s command stream:\n", ring_str(ring));
 747         seq_printf(m, "  HEAD: 0x%08x\n", error->head[ring]);
 748         seq_printf(m, "  TAIL: 0x%08x\n", error->tail[ring]);
 749         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd[ring]);
 750         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir[ring]);
 751         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr[ring]);
 752         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone[ring]);
 753         if (ring == RCS && INTEL_INFO(dev)->gen >= 4) {
 754                 seq_printf(m, "  INSTDONE1: 0x%08x\n", error->instdone1);
 755                 seq_printf(m, "  BBADDR: 0x%08llx\n", error->bbaddr);
 756         }
 757         if (INTEL_INFO(dev)->gen >= 4)
 758                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps[ring]);
 759         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm[ring]);
 760         seq_printf(m, "  FADDR: 0x%08x\n", error->faddr[ring]);
 761         if (INTEL_INFO(dev)->gen >= 6) {
 762                 seq_printf(m, "  FAULT_REG: 0x%08x\n", error->fault_reg[ring]);
 763                 seq_printf(m, "  SYNC_0: 0x%08x\n",
 764                            error->semaphore_mboxes[ring][0]);
 765                 seq_printf(m, "  SYNC_1: 0x%08x\n",
 766                            error->semaphore_mboxes[ring][1]);
 767         }
 768         seq_printf(m, "  seqno: 0x%08x\n", error->seqno[ring]);
 769         seq_printf(m, "  ring->head: 0x%08x\n", error->cpu_ring_head[ring]);
 770         seq_printf(m, "  ring->tail: 0x%08x\n", error->cpu_ring_tail[ring]);
 771 }
 772
 773 static int i915_error_state(struct seq_file *m, void *unused)
 774 {
 775         struct drm_info_node *node = (struct drm_info_node *) m->private;
 776         struct drm_device *dev = node->minor->dev;
 777         drm_i915_private_t *dev_priv = dev->dev_private;
 778         struct drm_i915_error_state *error;
 779         unsigned long flags;
 780         int i, j, page, offset, elt;
 781
 782         spin_lock_irqsave(&dev_priv->error_lock, flags);
 783         if (!dev_priv->first_error) {
 784                 seq_printf(m, "no error state collected\n");
 785                 goto out;
 786         }
 787
 788         error = dev_priv->first_error;
 789
 790         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 791                    error->time.tv_usec);
 792         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
 793         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 794         seq_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 795
 796         for (i = 0; i < dev_priv->num_fence_regs; i++)
 797                 seq_printf(m, "  fence[%d] = %08llx\n", i, error->fence[i]);
 798
 799         if (INTEL_INFO(dev)->gen >= 6) {
 800                 seq_printf(m, "ERROR: 0x%08x\n", error->error);
 801                 seq_printf(m, "DONE_REG: 0x%08x\n", error->done_reg);
 802         }
 803
 804         i915_ring_error_state(m, dev, error, RCS);
 805         if (HAS_BLT(dev))
 806                 i915_ring_error_state(m, dev, error, BCS);
 807         if (HAS_BSD(dev))
 808                 i915_ring_error_state(m, dev, error, VCS);
 809
 810         if (error->active_bo)
 811                 print_error_buffers(m, "Active",
 812                                     error->active_bo,
 813                                     error->active_bo_count);
 814
 815         if (error->pinned_bo)
 816                 print_error_buffers(m, "Pinned",
 817                                     error->pinned_bo,
 818                                     error->pinned_bo_count);
 819
 820         for (i = 0; i < ARRAY_SIZE(error->ring); i++) {
 821                 struct drm_i915_error_object *obj;
 822
 823                 if ((obj = error->ring[i].batchbuffer)) {
 824                         seq_printf(m, "%s --- gtt_offset = 0x%08x\n",
 825                                    dev_priv->ring[i].name,
 826                                    obj->gtt_offset);
 827                         offset = 0;
 828                         for (page = 0; page < obj->page_count; page++) {
 829                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 830                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 831                                         offset += 4;
 832                                 }
 833                         }
 834                 }
 835
 836                 if (error->ring[i].num_requests) {
 837                         seq_printf(m, "%s --- %d requests\n",
 838                                    dev_priv->ring[i].name,
 839                                    error->ring[i].num_requests);
 840                         for (j = 0; j < error->ring[i].num_requests; j++) {
 841                                 seq_printf(m, "  seqno 0x%08x, emitted %ld, tail 0x%08x\n",
 842                                            error->ring[i].requests[j].seqno,
 843                                            error->ring[i].requests[j].jiffies,
 844                                            error->ring[i].requests[j].tail);
 845                         }
 846                 }
 847
 848                 if ((obj = error->ring[i].ringbuffer)) {
 849                         seq_printf(m, "%s --- ringbuffer = 0x%08x\n",
 850                                    dev_priv->ring[i].name,
 851                                    obj->gtt_offset);
 852                         offset = 0;
 853                         for (page = 0; page < obj->page_count; page++) {
 854                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 855                                         seq_printf(m, "%08x :  %08x\n",
 856                                                    offset,
 857                                                    obj->pages[page][elt]);
 858                                         offset += 4;
 859                                 }
 860                         }
 861                 }
 862         }
 863
 864         if (error->overlay)
 865                 intel_overlay_print_error_state(m, error->overlay);
 866
 867         if (error->display)
 868                 intel_display_print_error_state(m, dev, error->display);
 869
 870 out:
 871         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
 872
 873         return 0;
 874 }
 875
 876 static int i915_rstdby_delays(struct seq_file *m, void *unused)
 877 {
 878         struct drm_info_node *node = (struct drm_info_node *) m->private;
 879         struct drm_device *dev = node->minor->dev;
 880         drm_i915_private_t *dev_priv = dev->dev_private;
 881         u16 crstanddelay;
 882         int ret;
 883
 884         ret = mutex_lock_interruptible(&dev->struct_mutex);
 885         if (ret)
 886                 return ret;
 887
 888         crstanddelay = I915_READ16(CRSTANDVID);
 889
 890         mutex_unlock(&dev->struct_mutex);
 891
 892         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
 893
 894         return 0;
 895 }
 896
 897 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
 898 {
 899         struct drm_info_node *node = (struct drm_info_node *) m->private;
 900         struct drm_device *dev = node->minor->dev;
 901         drm_i915_private_t *dev_priv = dev->dev_private;
 902         int ret;
 903
 904         if (IS_GEN5(dev)) {
 905                 u16 rgvswctl = I915_READ16(MEMSWCTL);
 906                 u16 rgvstat = I915_READ16(MEMSTAT_ILK);
 907
 908                 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 909                 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
 910                 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 911                            MEMSTAT_VID_SHIFT);
 912                 seq_printf(m, "Current P-state: %d\n",
 913                            (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
 914         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
 915                 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
 916                 u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
 917                 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
 918                 u32 rpstat;
 919                 u32 rpupei, rpcurup, rpprevup;
 920                 u32 rpdownei, rpcurdown, rpprevdown;
 921                 int max_freq;
 922
 923                 /* RPSTAT1 is in the GT power well */
 924                 ret = mutex_lock_interruptible(&dev->struct_mutex);
 925                 if (ret)
 926                         return ret;
 927
 928                 gen6_gt_force_wake_get(dev_priv);
 929
 930                 rpstat = I915_READ(GEN6_RPSTAT1);
 931                 rpupei = I915_READ(GEN6_RP_CUR_UP_EI);
 932                 rpcurup = I915_READ(GEN6_RP_CUR_UP);
 933                 rpprevup = I915_READ(GEN6_RP_PREV_UP);
 934                 rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI);
 935                 rpcurdown = I915_READ(GEN6_RP_CUR_DOWN);
 936                 rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
 937
 938                 gen6_gt_force_wake_put(dev_priv);
 939                 mutex_unlock(&dev->struct_mutex);
 940
 941                 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
 942                 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
 943                 seq_printf(m, "Render p-state ratio: %d\n",
 944                            (gt_perf_status & 0xff00) >> 8);
 945                 seq_printf(m, "Render p-state VID: %d\n",
 946                            gt_perf_status & 0xff);
 947                 seq_printf(m, "Render p-state limit: %d\n",
 948                            rp_state_limits & 0xff);
 949                 seq_printf(m, "CAGF: %dMHz\n", ((rpstat & GEN6_CAGF_MASK) >>
 950                                                 GEN6_CAGF_SHIFT) * 50);
 951                 seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
 952                            GEN6_CURICONT_MASK);
 953                 seq_printf(m, "RP CUR UP: %dus\n", rpcurup &
 954                            GEN6_CURBSYTAVG_MASK);
 955                 seq_printf(m, "RP PREV UP: %dus\n", rpprevup &
 956                            GEN6_CURBSYTAVG_MASK);
 957                 seq_printf(m, "RP CUR DOWN EI: %dus\n", rpdownei &
 958                            GEN6_CURIAVG_MASK);
 959                 seq_printf(m, "RP CUR DOWN: %dus\n", rpcurdown &
 960                            GEN6_CURBSYTAVG_MASK);
 961                 seq_printf(m, "RP PREV DOWN: %dus\n", rpprevdown &
 962                            GEN6_CURBSYTAVG_MASK);
 963
 964                 max_freq = (rp_state_cap & 0xff0000) >> 16;
 965                 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
 966                            max_freq * 50);
 967
 968                 max_freq = (rp_state_cap & 0xff00) >> 8;
 969                 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
 970                            max_freq * 50);
 971
 972                 max_freq = rp_state_cap & 0xff;
 973                 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
 974                            max_freq * 50);
 975         } else {
 976                 seq_printf(m, "no P-state info available\n");
 977         }
 978
 979         return 0;
 980 }
 981
 982 static int i915_delayfreq_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 delayfreq;
 988         int ret, i;
 989
 990         ret = mutex_lock_interruptible(&dev->struct_mutex);
 991         if (ret)
 992                 return ret;
 993
 994         for (i = 0; i < 16; i++) {
 995                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
 996                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
 997                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
 998         }
 999
1000         mutex_unlock(&dev->struct_mutex);
1001
1002         return 0;
1003 }
1004
1005 static inline int MAP_TO_MV(int map)
1006 {
1007         return 1250 - (map * 25);
1008 }
1009
1010 static int i915_inttoext_table(struct seq_file *m, void *unused)
1011 {
1012         struct drm_info_node *node = (struct drm_info_node *) m->private;
1013         struct drm_device *dev = node->minor->dev;
1014         drm_i915_private_t *dev_priv = dev->dev_private;
1015         u32 inttoext;
1016         int ret, i;
1017
1018         ret = mutex_lock_interruptible(&dev->struct_mutex);
1019         if (ret)
1020                 return ret;
1021
1022         for (i = 1; i <= 32; i++) {
1023                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
1024                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
1025         }
1026
1027         mutex_unlock(&dev->struct_mutex);
1028
1029         return 0;
1030 }
1031
1032 static int ironlake_drpc_info(struct seq_file *m)
1033 {
1034         struct drm_info_node *node = (struct drm_info_node *) m->private;
1035         struct drm_device *dev = node->minor->dev;
1036         drm_i915_private_t *dev_priv = dev->dev_private;
1037         u32 rgvmodectl, rstdbyctl;
1038         u16 crstandvid;
1039         int ret;
1040
1041         ret = mutex_lock_interruptible(&dev->struct_mutex);
1042         if (ret)
1043                 return ret;
1044
1045         rgvmodectl = I915_READ(MEMMODECTL);
1046         rstdbyctl = I915_READ(RSTDBYCTL);
1047         crstandvid = I915_READ16(CRSTANDVID);
1048
1049         mutex_unlock(&dev->struct_mutex);
1050
1051         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
1052                    "yes" : "no");
1053         seq_printf(m, "Boost freq: %d\n",
1054                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
1055                    MEMMODE_BOOST_FREQ_SHIFT);
1056         seq_printf(m, "HW control enabled: %s\n",
1057                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
1058         seq_printf(m, "SW control enabled: %s\n",
1059                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
1060         seq_printf(m, "Gated voltage change: %s\n",
1061                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
1062         seq_printf(m, "Starting frequency: P%d\n",
1063                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
1064         seq_printf(m, "Max P-state: P%d\n",
1065                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
1066         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
1067         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
1068         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
1069         seq_printf(m, "Render standby enabled: %s\n",
1070                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
1071         seq_printf(m, "Current RS state: ");
1072         switch (rstdbyctl & RSX_STATUS_MASK) {
1073         case RSX_STATUS_ON:
1074                 seq_printf(m, "on\n");
1075                 break;
1076         case RSX_STATUS_RC1:
1077                 seq_printf(m, "RC1\n");
1078                 break;
1079         case RSX_STATUS_RC1E:
1080                 seq_printf(m, "RC1E\n");
1081                 break;
1082         case RSX_STATUS_RS1:
1083                 seq_printf(m, "RS1\n");
1084                 break;
1085         case RSX_STATUS_RS2:
1086                 seq_printf(m, "RS2 (RC6)\n");
1087                 break;
1088         case RSX_STATUS_RS3:
1089                 seq_printf(m, "RC3 (RC6+)\n");
1090                 break;
1091         default:
1092                 seq_printf(m, "unknown\n");
1093                 break;
1094         }
1095
1096         return 0;
1097 }
1098
1099 static int gen6_drpc_info(struct seq_file *m)
1100 {
1101
1102         struct drm_info_node *node = (struct drm_info_node *) m->private;
1103         struct drm_device *dev = node->minor->dev;
1104         struct drm_i915_private *dev_priv = dev->dev_private;
1105         u32 rpmodectl1, gt_core_status, rcctl1;
1106         unsigned forcewake_count;
1107         int count=0, ret;
1108
1109
1110         ret = mutex_lock_interruptible(&dev->struct_mutex);
1111         if (ret)
1112                 return ret;
1113
1114         spin_lock_irq(&dev_priv->gt_lock);
1115         forcewake_count = dev_priv->forcewake_count;
1116         spin_unlock_irq(&dev_priv->gt_lock);
1117
1118         if (forcewake_count) {
1119                 seq_printf(m, "RC information inaccurate because somebody "
1120                               "holds a forcewake reference \n");
1121         } else {
1122                 /* NB: we cannot use forcewake, else we read the wrong values */
1123                 while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK) & 1))
1124                         udelay(10);
1125                 seq_printf(m, "RC information accurate: %s\n", yesno(count < 51));
1126         }
1127
1128         gt_core_status = readl(dev_priv->regs + GEN6_GT_CORE_STATUS);
1129         trace_i915_reg_rw(false, GEN6_GT_CORE_STATUS, gt_core_status, 4);
1130
1131         rpmodectl1 = I915_READ(GEN6_RP_CONTROL);
1132         rcctl1 = I915_READ(GEN6_RC_CONTROL);
1133         mutex_unlock(&dev->struct_mutex);
1134
1135         seq_printf(m, "Video Turbo Mode: %s\n",
1136                    yesno(rpmodectl1 & GEN6_RP_MEDIA_TURBO));
1137         seq_printf(m, "HW control enabled: %s\n",
1138                    yesno(rpmodectl1 & GEN6_RP_ENABLE));
1139         seq_printf(m, "SW control enabled: %s\n",
1140                    yesno((rpmodectl1 & GEN6_RP_MEDIA_MODE_MASK) ==
1141                           GEN6_RP_MEDIA_SW_MODE));
1142         seq_printf(m, "RC1e Enabled: %s\n",
1143                    yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
1144         seq_printf(m, "RC6 Enabled: %s\n",
1145                    yesno(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
1146         seq_printf(m, "Deep RC6 Enabled: %s\n",
1147                    yesno(rcctl1 & GEN6_RC_CTL_RC6p_ENABLE));
1148         seq_printf(m, "Deepest RC6 Enabled: %s\n",
1149                    yesno(rcctl1 & GEN6_RC_CTL_RC6pp_ENABLE));
1150         seq_printf(m, "Current RC state: ");
1151         switch (gt_core_status & GEN6_RCn_MASK) {
1152         case GEN6_RC0:
1153                 if (gt_core_status & GEN6_CORE_CPD_STATE_MASK)
1154                         seq_printf(m, "Core Power Down\n");
1155                 else
1156                         seq_printf(m, "on\n");
1157                 break;
1158         case GEN6_RC3:
1159                 seq_printf(m, "RC3\n");
1160                 break;
1161         case GEN6_RC6:
1162                 seq_printf(m, "RC6\n");
1163                 break;
1164         case GEN6_RC7:
1165                 seq_printf(m, "RC7\n");
1166                 break;
1167         default:
1168                 seq_printf(m, "Unknown\n");
1169                 break;
1170         }
1171
1172         seq_printf(m, "Core Power Down: %s\n",
1173                    yesno(gt_core_status & GEN6_CORE_CPD_STATE_MASK));
1174         return 0;
1175 }
1176
1177 static int i915_drpc_info(struct seq_file *m, void *unused)
1178 {
1179         struct drm_info_node *node = (struct drm_info_node *) m->private;
1180         struct drm_device *dev = node->minor->dev;
1181
1182         if (IS_GEN6(dev) || IS_GEN7(dev))
1183                 return gen6_drpc_info(m);
1184         else
1185                 return ironlake_drpc_info(m);
1186 }
1187
1188 static int i915_fbc_status(struct seq_file *m, void *unused)
1189 {
1190         struct drm_info_node *node = (struct drm_info_node *) m->private;
1191         struct drm_device *dev = node->minor->dev;
1192         drm_i915_private_t *dev_priv = dev->dev_private;
1193
1194         if (!I915_HAS_FBC(dev)) {
1195                 seq_printf(m, "FBC unsupported on this chipset\n");
1196                 return 0;
1197         }
1198
1199         if (intel_fbc_enabled(dev)) {
1200                 seq_printf(m, "FBC enabled\n");
1201         } else {
1202                 seq_printf(m, "FBC disabled: ");
1203                 switch (dev_priv->no_fbc_reason) {
1204                 case FBC_NO_OUTPUT:
1205                         seq_printf(m, "no outputs");
1206                         break;
1207                 case FBC_STOLEN_TOO_SMALL:
1208                         seq_printf(m, "not enough stolen memory");
1209                         break;
1210                 case FBC_UNSUPPORTED_MODE:
1211                         seq_printf(m, "mode not supported");
1212                         break;
1213                 case FBC_MODE_TOO_LARGE:
1214                         seq_printf(m, "mode too large");
1215                         break;
1216                 case FBC_BAD_PLANE:
1217                         seq_printf(m, "FBC unsupported on plane");
1218                         break;
1219                 case FBC_NOT_TILED:
1220                         seq_printf(m, "scanout buffer not tiled");
1221                         break;
1222                 case FBC_MULTIPLE_PIPES:
1223                         seq_printf(m, "multiple pipes are enabled");
1224                         break;
1225                 case FBC_MODULE_PARAM:
1226                         seq_printf(m, "disabled per module param (default off)");
1227                         break;
1228                 default:
1229                         seq_printf(m, "unknown reason");
1230                 }
1231                 seq_printf(m, "\n");
1232         }
1233         return 0;
1234 }
1235
1236 static int i915_sr_status(struct seq_file *m, void *unused)
1237 {
1238         struct drm_info_node *node = (struct drm_info_node *) m->private;
1239         struct drm_device *dev = node->minor->dev;
1240         drm_i915_private_t *dev_priv = dev->dev_private;
1241         bool sr_enabled = false;
1242
1243         if (HAS_PCH_SPLIT(dev))
1244                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1245         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
1246                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1247         else if (IS_I915GM(dev))
1248                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1249         else if (IS_PINEVIEW(dev))
1250                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1251
1252         seq_printf(m, "self-refresh: %s\n",
1253                    sr_enabled ? "enabled" : "disabled");
1254
1255         return 0;
1256 }
1257
1258 static int i915_emon_status(struct seq_file *m, void *unused)
1259 {
1260         struct drm_info_node *node = (struct drm_info_node *) m->private;
1261         struct drm_device *dev = node->minor->dev;
1262         drm_i915_private_t *dev_priv = dev->dev_private;
1263         unsigned long temp, chipset, gfx;
1264         int ret;
1265
1266         ret = mutex_lock_interruptible(&dev->struct_mutex);
1267         if (ret)
1268                 return ret;
1269
1270         temp = i915_mch_val(dev_priv);
1271         chipset = i915_chipset_val(dev_priv);
1272         gfx = i915_gfx_val(dev_priv);
1273         mutex_unlock(&dev->struct_mutex);
1274
1275         seq_printf(m, "GMCH temp: %ld\n", temp);
1276         seq_printf(m, "Chipset power: %ld\n", chipset);
1277         seq_printf(m, "GFX power: %ld\n", gfx);
1278         seq_printf(m, "Total power: %ld\n", chipset + gfx);
1279
1280         return 0;
1281 }
1282
1283 static int i915_ring_freq_table(struct seq_file *m, void *unused)
1284 {
1285         struct drm_info_node *node = (struct drm_info_node *) m->private;
1286         struct drm_device *dev = node->minor->dev;
1287         drm_i915_private_t *dev_priv = dev->dev_private;
1288         int ret;
1289         int gpu_freq, ia_freq;
1290
1291         if (!(IS_GEN6(dev) || IS_GEN7(dev))) {
1292                 seq_printf(m, "unsupported on this chipset\n");
1293                 return 0;
1294         }
1295
1296         ret = mutex_lock_interruptible(&dev->struct_mutex);
1297         if (ret)
1298                 return ret;
1299
1300         seq_printf(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\n");
1301
1302         for (gpu_freq = dev_priv->min_delay; gpu_freq <= dev_priv->max_delay;
1303              gpu_freq++) {
1304                 I915_WRITE(GEN6_PCODE_DATA, gpu_freq);
1305                 I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY |
1306                            GEN6_PCODE_READ_MIN_FREQ_TABLE);
1307                 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) &
1308                               GEN6_PCODE_READY) == 0, 10)) {
1309                         DRM_ERROR("pcode read of freq table timed out\n");
1310                         continue;
1311                 }
1312                 ia_freq = I915_READ(GEN6_PCODE_DATA);
1313                 seq_printf(m, "%d\t\t%d\n", gpu_freq * 50, ia_freq * 100);
1314         }
1315
1316         mutex_unlock(&dev->struct_mutex);
1317
1318         return 0;
1319 }
1320
1321 static int i915_gfxec(struct seq_file *m, void *unused)
1322 {
1323         struct drm_info_node *node = (struct drm_info_node *) m->private;
1324         struct drm_device *dev = node->minor->dev;
1325         drm_i915_private_t *dev_priv = dev->dev_private;
1326         int ret;
1327
1328         ret = mutex_lock_interruptible(&dev->struct_mutex);
1329         if (ret)
1330                 return ret;
1331
1332         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
1333
1334         mutex_unlock(&dev->struct_mutex);
1335
1336         return 0;
1337 }
1338
1339 static int i915_opregion(struct seq_file *m, void *unused)
1340 {
1341         struct drm_info_node *node = (struct drm_info_node *) m->private;
1342         struct drm_device *dev = node->minor->dev;
1343         drm_i915_private_t *dev_priv = dev->dev_private;
1344         struct intel_opregion *opregion = &dev_priv->opregion;
1345         int ret;
1346
1347         ret = mutex_lock_interruptible(&dev->struct_mutex);
1348         if (ret)
1349                 return ret;
1350
1351         if (opregion->header)
1352                 seq_write(m, opregion->header, OPREGION_SIZE);
1353
1354         mutex_unlock(&dev->struct_mutex);
1355
1356         return 0;
1357 }
1358
1359 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
1360 {
1361         struct drm_info_node *node = (struct drm_info_node *) m->private;
1362         struct drm_device *dev = node->minor->dev;
1363         drm_i915_private_t *dev_priv = dev->dev_private;
1364         struct intel_fbdev *ifbdev;
1365         struct intel_framebuffer *fb;
1366         int ret;
1367
1368         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1369         if (ret)
1370                 return ret;
1371
1372         ifbdev = dev_priv->fbdev;
1373         fb = to_intel_framebuffer(ifbdev->helper.fb);
1374
1375         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
1376                    fb->base.width,
1377                    fb->base.height,
1378                    fb->base.depth,
1379                    fb->base.bits_per_pixel);
1380         describe_obj(m, fb->obj);
1381         seq_printf(m, "\n");
1382
1383         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
1384                 if (&fb->base == ifbdev->helper.fb)
1385                         continue;
1386
1387                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
1388                            fb->base.width,
1389                            fb->base.height,
1390                            fb->base.depth,
1391                            fb->base.bits_per_pixel);
1392                 describe_obj(m, fb->obj);
1393                 seq_printf(m, "\n");
1394         }
1395
1396         mutex_unlock(&dev->mode_config.mutex);
1397
1398         return 0;
1399 }
1400
1401 static int i915_context_status(struct seq_file *m, void *unused)
1402 {
1403         struct drm_info_node *node = (struct drm_info_node *) m->private;
1404         struct drm_device *dev = node->minor->dev;
1405         drm_i915_private_t *dev_priv = dev->dev_private;
1406         int ret;
1407
1408         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1409         if (ret)
1410                 return ret;
1411
1412         if (dev_priv->pwrctx) {
1413                 seq_printf(m, "power context ");
1414                 describe_obj(m, dev_priv->pwrctx);
1415                 seq_printf(m, "\n");
1416         }
1417
1418         if (dev_priv->renderctx) {
1419                 seq_printf(m, "render context ");
1420                 describe_obj(m, dev_priv->renderctx);
1421                 seq_printf(m, "\n");
1422         }
1423
1424         mutex_unlock(&dev->mode_config.mutex);
1425
1426         return 0;
1427 }
1428
1429 static int i915_gen6_forcewake_count_info(struct seq_file *m, void *data)
1430 {
1431         struct drm_info_node *node = (struct drm_info_node *) m->private;
1432         struct drm_device *dev = node->minor->dev;
1433         struct drm_i915_private *dev_priv = dev->dev_private;
1434         unsigned forcewake_count;
1435
1436         spin_lock_irq(&dev_priv->gt_lock);
1437         forcewake_count = dev_priv->forcewake_count;
1438         spin_unlock_irq(&dev_priv->gt_lock);
1439
1440         seq_printf(m, "forcewake count = %u\n", forcewake_count);
1441
1442         return 0;
1443 }
1444
1445 static const char *swizzle_string(unsigned swizzle)
1446 {
1447         switch(swizzle) {
1448         case I915_BIT_6_SWIZZLE_NONE:
1449                 return "none";
1450         case I915_BIT_6_SWIZZLE_9:
1451                 return "bit9";
1452         case I915_BIT_6_SWIZZLE_9_10:
1453                 return "bit9/bit10";
1454         case I915_BIT_6_SWIZZLE_9_11:
1455                 return "bit9/bit11";
1456         case I915_BIT_6_SWIZZLE_9_10_11:
1457                 return "bit9/bit10/bit11";
1458         case I915_BIT_6_SWIZZLE_9_17:
1459                 return "bit9/bit17";
1460         case I915_BIT_6_SWIZZLE_9_10_17:
1461                 return "bit9/bit10/bit17";
1462         case I915_BIT_6_SWIZZLE_UNKNOWN:
1463                 return "unkown";
1464         }
1465
1466         return "bug";
1467 }
1468
1469 static int i915_swizzle_info(struct seq_file *m, void *data)
1470 {
1471         struct drm_info_node *node = (struct drm_info_node *) m->private;
1472         struct drm_device *dev = node->minor->dev;
1473         struct drm_i915_private *dev_priv = dev->dev_private;
1474
1475         mutex_lock(&dev->struct_mutex);
1476         seq_printf(m, "bit6 swizzle for X-tiling = %s\n",
1477                    swizzle_string(dev_priv->mm.bit_6_swizzle_x));
1478         seq_printf(m, "bit6 swizzle for Y-tiling = %s\n",
1479                    swizzle_string(dev_priv->mm.bit_6_swizzle_y));
1480
1481         if (IS_GEN3(dev) || IS_GEN4(dev)) {
1482                 seq_printf(m, "DDC = 0x%08x\n",
1483                            I915_READ(DCC));
1484                 seq_printf(m, "C0DRB3 = 0x%04x\n",
1485                            I915_READ16(C0DRB3));
1486                 seq_printf(m, "C1DRB3 = 0x%04x\n",
1487                            I915_READ16(C1DRB3));
1488         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
1489                 seq_printf(m, "MAD_DIMM_C0 = 0x%08x\n",
1490                            I915_READ(MAD_DIMM_C0));
1491                 seq_printf(m, "MAD_DIMM_C1 = 0x%08x\n",
1492                            I915_READ(MAD_DIMM_C1));
1493                 seq_printf(m, "MAD_DIMM_C2 = 0x%08x\n",
1494                            I915_READ(MAD_DIMM_C2));
1495                 seq_printf(m, "TILECTL = 0x%08x\n",
1496                            I915_READ(TILECTL));
1497                 seq_printf(m, "ARB_MODE = 0x%08x\n",
1498                            I915_READ(ARB_MODE));
1499                 seq_printf(m, "DISP_ARB_CTL = 0x%08x\n",
1500                            I915_READ(DISP_ARB_CTL));
1501         }
1502         mutex_unlock(&dev->struct_mutex);
1503
1504         return 0;
1505 }
1506
1507 static int i915_ppgtt_info(struct seq_file *m, void *data)
1508 {
1509         struct drm_info_node *node = (struct drm_info_node *) m->private;
1510         struct drm_device *dev = node->minor->dev;
1511         struct drm_i915_private *dev_priv = dev->dev_private;
1512         struct intel_ring_buffer *ring;
1513         int i, ret;
1514
1515
1516         ret = mutex_lock_interruptible(&dev->struct_mutex);
1517         if (ret)
1518                 return ret;
1519         if (INTEL_INFO(dev)->gen == 6)
1520                 seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(GFX_MODE));
1521
1522         for (i = 0; i < I915_NUM_RINGS; i++) {
1523                 ring = &dev_priv->ring[i];
1524
1525                 seq_printf(m, "%s\n", ring->name);
1526                 if (INTEL_INFO(dev)->gen == 7)
1527                         seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(RING_MODE_GEN7(ring)));
1528                 seq_printf(m, "PP_DIR_BASE: 0x%08x\n", I915_READ(RING_PP_DIR_BASE(ring)));
1529                 seq_printf(m, "PP_DIR_BASE_READ: 0x%08x\n", I915_READ(RING_PP_DIR_BASE_READ(ring)));
1530                 seq_printf(m, "PP_DIR_DCLV: 0x%08x\n", I915_READ(RING_PP_DIR_DCLV(ring)));
1531         }
1532         if (dev_priv->mm.aliasing_ppgtt) {
1533                 struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt;
1534
1535                 seq_printf(m, "aliasing PPGTT:\n");
1536                 seq_printf(m, "pd gtt offset: 0x%08x\n", ppgtt->pd_offset);
1537         }
1538         seq_printf(m, "ECOCHK: 0x%08x\n", I915_READ(GAM_ECOCHK));
1539         mutex_unlock(&dev->struct_mutex);
1540
1541         return 0;
1542 }
1543
1544 static int i915_dpio_info(struct seq_file *m, void *data)
1545 {
1546         struct drm_info_node *node = (struct drm_info_node *) m->private;
1547         struct drm_device *dev = node->minor->dev;
1548         struct drm_i915_private *dev_priv = dev->dev_private;
1549         int ret;
1550
1551
1552         if (!IS_VALLEYVIEW(dev)) {
1553                 seq_printf(m, "unsupported\n");
1554                 return 0;
1555         }
1556
1557         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1558         if (ret)
1559                 return ret;
1560
1561         seq_printf(m, "DPIO_CTL: 0x%08x\n", I915_READ(DPIO_CTL));
1562
1563         seq_printf(m, "DPIO_DIV_A: 0x%08x\n",
1564                    intel_dpio_read(dev_priv, _DPIO_DIV_A));
1565         seq_printf(m, "DPIO_DIV_B: 0x%08x\n",
1566                    intel_dpio_read(dev_priv, _DPIO_DIV_B));
1567
1568         seq_printf(m, "DPIO_REFSFR_A: 0x%08x\n",
1569                    intel_dpio_read(dev_priv, _DPIO_REFSFR_A));
1570         seq_printf(m, "DPIO_REFSFR_B: 0x%08x\n",
1571                    intel_dpio_read(dev_priv, _DPIO_REFSFR_B));
1572
1573         seq_printf(m, "DPIO_CORE_CLK_A: 0x%08x\n",
1574                    intel_dpio_read(dev_priv, _DPIO_CORE_CLK_A));
1575         seq_printf(m, "DPIO_CORE_CLK_B: 0x%08x\n",
1576                    intel_dpio_read(dev_priv, _DPIO_CORE_CLK_B));
1577
1578         seq_printf(m, "DPIO_LFP_COEFF_A: 0x%08x\n",
1579                    intel_dpio_read(dev_priv, _DPIO_LFP_COEFF_A));
1580         seq_printf(m, "DPIO_LFP_COEFF_B: 0x%08x\n",
1581                    intel_dpio_read(dev_priv, _DPIO_LFP_COEFF_B));
1582
1583         seq_printf(m, "DPIO_FASTCLK_DISABLE: 0x%08x\n",
1584                    intel_dpio_read(dev_priv, DPIO_FASTCLK_DISABLE));
1585
1586         mutex_unlock(&dev->mode_config.mutex);
1587
1588         return 0;
1589 }
1590
1591 static int
1592 i915_debugfs_common_open(struct inode *inode,
1593                          struct file *filp)
1594 {
1595         filp->private_data = inode->i_private;
1596         return 0;
1597 }
1598
1599 static ssize_t
1600 i915_wedged_read(struct file *filp,
1601                  char __user *ubuf,
1602                  size_t max,
1603                  loff_t *ppos)
1604 {
1605         struct drm_device *dev = filp->private_data;
1606         drm_i915_private_t *dev_priv = dev->dev_private;
1607         char buf[80];
1608         int len;
1609
1610         len = snprintf(buf, sizeof(buf),
1611                        "wedged :  %d\n",
1612                        atomic_read(&dev_priv->mm.wedged));
1613
1614         if (len > sizeof(buf))
1615                 len = sizeof(buf);
1616
1617         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1618 }
1619
1620 static ssize_t
1621 i915_wedged_write(struct file *filp,
1622                   const char __user *ubuf,
1623                   size_t cnt,
1624                   loff_t *ppos)
1625 {
1626         struct drm_device *dev = filp->private_data;
1627         char buf[20];
1628         int val = 1;
1629
1630         if (cnt > 0) {
1631                 if (cnt > sizeof(buf) - 1)
1632                         return -EINVAL;
1633
1634                 if (copy_from_user(buf, ubuf, cnt))
1635                         return -EFAULT;
1636                 buf[cnt] = 0;
1637
1638                 val = simple_strtoul(buf, NULL, 0);
1639         }
1640
1641         DRM_INFO("Manually setting wedged to %d\n", val);
1642         i915_handle_error(dev, val);
1643
1644         return cnt;
1645 }
1646
1647 static const struct file_operations i915_wedged_fops = {
1648         .owner = THIS_MODULE,
1649         .open = i915_debugfs_common_open,
1650         .read = i915_wedged_read,
1651         .write = i915_wedged_write,
1652         .llseek = default_llseek,
1653 };
1654
1655 static ssize_t
1656 i915_max_freq_read(struct file *filp,
1657                    char __user *ubuf,
1658                    size_t max,
1659                    loff_t *ppos)
1660 {
1661         struct drm_device *dev = filp->private_data;
1662         drm_i915_private_t *dev_priv = dev->dev_private;
1663         char buf[80];
1664         int len;
1665
1666         len = snprintf(buf, sizeof(buf),
1667                        "max freq: %d\n", dev_priv->max_delay * 50);
1668
1669         if (len > sizeof(buf))
1670                 len = sizeof(buf);
1671
1672         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1673 }
1674
1675 static ssize_t
1676 i915_max_freq_write(struct file *filp,
1677                   const char __user *ubuf,
1678                   size_t cnt,
1679                   loff_t *ppos)
1680 {
1681         struct drm_device *dev = filp->private_data;
1682         struct drm_i915_private *dev_priv = dev->dev_private;
1683         char buf[20];
1684         int val = 1;
1685
1686         if (cnt > 0) {
1687                 if (cnt > sizeof(buf) - 1)
1688                         return -EINVAL;
1689
1690                 if (copy_from_user(buf, ubuf, cnt))
1691                         return -EFAULT;
1692                 buf[cnt] = 0;
1693
1694                 val = simple_strtoul(buf, NULL, 0);
1695         }
1696
1697         DRM_DEBUG_DRIVER("Manually setting max freq to %d\n", val);
1698
1699         /*
1700          * Turbo will still be enabled, but won't go above the set value.
1701          */
1702         dev_priv->max_delay = val / 50;
1703
1704         gen6_set_rps(dev, val / 50);
1705
1706         return cnt;
1707 }
1708
1709 static const struct file_operations i915_max_freq_fops = {
1710         .owner = THIS_MODULE,
1711         .open = i915_debugfs_common_open,
1712         .read = i915_max_freq_read,
1713         .write = i915_max_freq_write,
1714         .llseek = default_llseek,
1715 };
1716
1717 static ssize_t
1718 i915_cache_sharing_read(struct file *filp,
1719                    char __user *ubuf,
1720                    size_t max,
1721                    loff_t *ppos)
1722 {
1723         struct drm_device *dev = filp->private_data;
1724         drm_i915_private_t *dev_priv = dev->dev_private;
1725         char buf[80];
1726         u32 snpcr;
1727         int len;
1728
1729         mutex_lock(&dev_priv->dev->struct_mutex);
1730         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1731         mutex_unlock(&dev_priv->dev->struct_mutex);
1732
1733         len = snprintf(buf, sizeof(buf),
1734                        "%d\n", (snpcr & GEN6_MBC_SNPCR_MASK) >>
1735                        GEN6_MBC_SNPCR_SHIFT);
1736
1737         if (len > sizeof(buf))
1738                 len = sizeof(buf);
1739
1740         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1741 }
1742
1743 static ssize_t
1744 i915_cache_sharing_write(struct file *filp,
1745                   const char __user *ubuf,
1746                   size_t cnt,
1747                   loff_t *ppos)
1748 {
1749         struct drm_device *dev = filp->private_data;
1750         struct drm_i915_private *dev_priv = dev->dev_private;
1751         char buf[20];
1752         u32 snpcr;
1753         int val = 1;
1754
1755         if (cnt > 0) {
1756                 if (cnt > sizeof(buf) - 1)
1757                         return -EINVAL;
1758
1759                 if (copy_from_user(buf, ubuf, cnt))
1760                         return -EFAULT;
1761                 buf[cnt] = 0;
1762
1763                 val = simple_strtoul(buf, NULL, 0);
1764         }
1765
1766         if (val < 0 || val > 3)
1767                 return -EINVAL;
1768
1769         DRM_DEBUG_DRIVER("Manually setting uncore sharing to %d\n", val);
1770
1771         /* Update the cache sharing policy here as well */
1772         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1773         snpcr &= ~GEN6_MBC_SNPCR_MASK;
1774         snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
1775         I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
1776
1777         return cnt;
1778 }
1779
1780 static const struct file_operations i915_cache_sharing_fops = {
1781         .owner = THIS_MODULE,
1782         .open = i915_debugfs_common_open,
1783         .read = i915_cache_sharing_read,
1784         .write = i915_cache_sharing_write,
1785         .llseek = default_llseek,
1786 };
1787
1788 /* As the drm_debugfs_init() routines are called before dev->dev_private is
1789  * allocated we need to hook into the minor for release. */
1790 static int
1791 drm_add_fake_info_node(struct drm_minor *minor,
1792                        struct dentry *ent,
1793                        const void *key)
1794 {
1795         struct drm_info_node *node;
1796
1797         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
1798         if (node == NULL) {
1799                 debugfs_remove(ent);
1800                 return -ENOMEM;
1801         }
1802
1803         node->minor = minor;
1804         node->dent = ent;
1805         node->info_ent = (void *) key;
1806
1807         mutex_lock(&minor->debugfs_lock);
1808         list_add(&node->list, &minor->debugfs_list);
1809         mutex_unlock(&minor->debugfs_lock);
1810
1811         return 0;
1812 }
1813
1814 static int i915_forcewake_open(struct inode *inode, struct file *file)
1815 {
1816         struct drm_device *dev = inode->i_private;
1817         struct drm_i915_private *dev_priv = dev->dev_private;
1818         int ret;
1819
1820         if (INTEL_INFO(dev)->gen < 6)
1821                 return 0;
1822
1823         ret = mutex_lock_interruptible(&dev->struct_mutex);
1824         if (ret)
1825                 return ret;
1826         gen6_gt_force_wake_get(dev_priv);
1827         mutex_unlock(&dev->struct_mutex);
1828
1829         return 0;
1830 }
1831
1832 int i915_forcewake_release(struct inode *inode, struct file *file)
1833 {
1834         struct drm_device *dev = inode->i_private;
1835         struct drm_i915_private *dev_priv = dev->dev_private;
1836
1837         if (INTEL_INFO(dev)->gen < 6)
1838                 return 0;
1839
1840         /*
1841          * It's bad that we can potentially hang userspace if struct_mutex gets
1842          * forever stuck.  However, if we cannot acquire this lock it means that
1843          * almost certainly the driver has hung, is not unload-able. Therefore
1844          * hanging here is probably a minor inconvenience not to be seen my
1845          * almost every user.
1846          */
1847         mutex_lock(&dev->struct_mutex);
1848         gen6_gt_force_wake_put(dev_priv);
1849         mutex_unlock(&dev->struct_mutex);
1850
1851         return 0;
1852 }
1853
1854 static const struct file_operations i915_forcewake_fops = {
1855         .owner = THIS_MODULE,
1856         .open = i915_forcewake_open,
1857         .release = i915_forcewake_release,
1858 };
1859
1860 static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
1861 {
1862         struct drm_device *dev = minor->dev;
1863         struct dentry *ent;
1864
1865         ent = debugfs_create_file("i915_forcewake_user",
1866                                   S_IRUSR,
1867                                   root, dev,
1868                                   &i915_forcewake_fops);
1869         if (IS_ERR(ent))
1870                 return PTR_ERR(ent);
1871
1872         return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
1873 }
1874
1875 static int i915_debugfs_create(struct dentry *root,
1876                                struct drm_minor *minor,
1877                                const char *name,
1878                                const struct file_operations *fops)
1879 {
1880         struct drm_device *dev = minor->dev;
1881         struct dentry *ent;
1882
1883         ent = debugfs_create_file(name,
1884                                   S_IRUGO | S_IWUSR,
1885                                   root, dev,
1886                                   fops);
1887         if (IS_ERR(ent))
1888                 return PTR_ERR(ent);
1889
1890         return drm_add_fake_info_node(minor, ent, fops);
1891 }
1892
1893 static struct drm_info_list i915_debugfs_list[] = {
1894         {"i915_capabilities", i915_capabilities, 0},
1895         {"i915_gem_objects", i915_gem_object_info, 0},
1896         {"i915_gem_gtt", i915_gem_gtt_info, 0},
1897         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
1898         {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
1899         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
1900         {"i915_gem_pinned", i915_gem_object_list_info, 0, (void *) PINNED_LIST},
1901         {"i915_gem_deferred_free", i915_gem_object_list_info, 0, (void *) DEFERRED_FREE_LIST},
1902         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
1903         {"i915_gem_request", i915_gem_request_info, 0},
1904         {"i915_gem_seqno", i915_gem_seqno_info, 0},
1905         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
1906         {"i915_gem_interrupt", i915_interrupt_info, 0},
1907         {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
1908         {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
1909         {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
1910         {"i915_ringbuffer_data", i915_ringbuffer_data, 0, (void *)RCS},
1911         {"i915_ringbuffer_info", i915_ringbuffer_info, 0, (void *)RCS},
1912         {"i915_bsd_ringbuffer_data", i915_ringbuffer_data, 0, (void *)VCS},
1913         {"i915_bsd_ringbuffer_info", i915_ringbuffer_info, 0, (void *)VCS},
1914         {"i915_blt_ringbuffer_data", i915_ringbuffer_data, 0, (void *)BCS},
1915         {"i915_blt_ringbuffer_info", i915_ringbuffer_info, 0, (void *)BCS},
1916         {"i915_error_state", i915_error_state, 0},
1917         {"i915_rstdby_delays", i915_rstdby_delays, 0},
1918         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
1919         {"i915_delayfreq_table", i915_delayfreq_table, 0},
1920         {"i915_inttoext_table", i915_inttoext_table, 0},
1921         {"i915_drpc_info", i915_drpc_info, 0},
1922         {"i915_emon_status", i915_emon_status, 0},
1923         {"i915_ring_freq_table", i915_ring_freq_table, 0},
1924         {"i915_gfxec", i915_gfxec, 0},
1925         {"i915_fbc_status", i915_fbc_status, 0},
1926         {"i915_sr_status", i915_sr_status, 0},
1927         {"i915_opregion", i915_opregion, 0},
1928         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
1929         {"i915_context_status", i915_context_status, 0},
1930         {"i915_gen6_forcewake_count", i915_gen6_forcewake_count_info, 0},
1931         {"i915_swizzle_info", i915_swizzle_info, 0},
1932         {"i915_ppgtt_info", i915_ppgtt_info, 0},
1933         {"i915_dpio", i915_dpio_info, 0},
1934 };
1935 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
1936
1937 int i915_debugfs_init(struct drm_minor *minor)
1938 {
1939         int ret;
1940
1941         ret = i915_debugfs_create(minor->debugfs_root, minor,
1942                                   "i915_wedged",
1943                                   &i915_wedged_fops);
1944         if (ret)
1945                 return ret;
1946
1947         ret = i915_forcewake_create(minor->debugfs_root, minor);
1948         if (ret)
1949                 return ret;
1950
1951         ret = i915_debugfs_create(minor->debugfs_root, minor,
1952                                   "i915_max_freq",
1953                                   &i915_max_freq_fops);
1954         if (ret)
1955                 return ret;
1956
1957         ret = i915_debugfs_create(minor->debugfs_root, minor,
1958                                   "i915_cache_sharing",
1959                                   &i915_cache_sharing_fops);
1960         if (ret)
1961                 return ret;
1962
1963         return drm_debugfs_create_files(i915_debugfs_list,
1964                                         I915_DEBUGFS_ENTRIES,
1965                                         minor->debugfs_root, minor);
1966 }
1967
1968 void i915_debugfs_cleanup(struct drm_minor *minor)
1969 {
1970         drm_debugfs_remove_files(i915_debugfs_list,
1971                                  I915_DEBUGFS_ENTRIES, minor);
1972         drm_debugfs_remove_files((struct drm_info_list *) &i915_forcewake_fops,
1973                                  1, minor);
1974         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
1975                                  1, minor);
1976         drm_debugfs_remove_files((struct drm_info_list *) &i915_max_freq_fops,
1977                                  1, minor);
1978         drm_debugfs_remove_files((struct drm_info_list *) &i915_cache_sharing_fops,
1979                                  1, minor);
1980 }
1981
1982 #endif /* CONFIG_DEBUG_FS */