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 <generated/utsrelease.h>
  34 #include "drmP.h"
  35 #include "drm.h"
  36 #include "intel_drv.h"
  37 #include "intel_ringbuffer.h"
  38 #include "i915_drm.h"
  39 #include "i915_drv.h"
  40
  41 #define DRM_I915_RING_DEBUG 1
  42
  43
  44 #if defined(CONFIG_DEBUG_FS)
  45
  46 enum {
  47         ACTIVE_LIST,
  48         FLUSHING_LIST,
  49         INACTIVE_LIST,
  50         PINNED_LIST,
  51         DEFERRED_FREE_LIST,
  52 };
  53
  54 static const char *yesno(int v)
  55 {
  56         return v ? "yes" : "no";
  57 }
  58
  59 static int i915_capabilities(struct seq_file *m, void *data)
  60 {
  61         struct drm_info_node *node = (struct drm_info_node *) m->private;
  62         struct drm_device *dev = node->minor->dev;
  63         const struct intel_device_info *info = INTEL_INFO(dev);
  64
  65         seq_printf(m, "gen: %d\n", info->gen);
  66         seq_printf(m, "pch: %d\n", INTEL_PCH_TYPE(dev));
  67 #define B(x) seq_printf(m, #x ": %s\n", yesno(info->x))
  68         B(is_mobile);
  69         B(is_i85x);
  70         B(is_i915g);
  71         B(is_i945gm);
  72         B(is_g33);
  73         B(need_gfx_hws);
  74         B(is_g4x);
  75         B(is_pineview);
  76         B(is_broadwater);
  77         B(is_crestline);
  78         B(has_fbc);
  79         B(has_pipe_cxsr);
  80         B(has_hotplug);
  81         B(cursor_needs_physical);
  82         B(has_overlay);
  83         B(overlay_needs_physical);
  84         B(supports_tv);
  85         B(has_bsd_ring);
  86         B(has_blt_ring);
  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, "%pK: %s%s %8zd %04x %04x %d %d%s%s%s",
 126                    &obj->base,
 127                    get_pin_flag(obj),
 128                    get_tiling_flag(obj),
 129                    obj->base.size,
 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 (atomic_read(&work->pending) < INTEL_FLIP_COMPLETE) {
 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", atomic_read(&work->pending));
 355
 356                         if (work->old_fb_obj) {
 357                                 struct drm_i915_gem_object *obj = work->old_fb_obj;
 358                                 if (obj)
 359                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 360                         }
 361                         if (work->pending_flip_obj) {
 362                                 struct drm_i915_gem_object *obj = work->pending_flip_obj;
 363                                 if (obj)
 364                                         seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 365                         }
 366                 }
 367                 spin_unlock_irqrestore(&dev->event_lock, flags);
 368         }
 369
 370         return 0;
 371 }
 372
 373 static int i915_gem_request_info(struct seq_file *m, void *data)
 374 {
 375         struct drm_info_node *node = (struct drm_info_node *) m->private;
 376         struct drm_device *dev = node->minor->dev;
 377         drm_i915_private_t *dev_priv = dev->dev_private;
 378         struct drm_i915_gem_request *gem_request;
 379         int ret, count;
 380
 381         ret = mutex_lock_interruptible(&dev->struct_mutex);
 382         if (ret)
 383                 return ret;
 384
 385         count = 0;
 386         if (!list_empty(&dev_priv->ring[RCS].request_list)) {
 387                 seq_printf(m, "Render requests:\n");
 388                 list_for_each_entry(gem_request,
 389                                     &dev_priv->ring[RCS].request_list,
 390                                     list) {
 391                         seq_printf(m, "    %d @ %d\n",
 392                                    gem_request->seqno,
 393                                    (int) (jiffies - gem_request->emitted_jiffies));
 394                 }
 395                 count++;
 396         }
 397         if (!list_empty(&dev_priv->ring[VCS].request_list)) {
 398                 seq_printf(m, "BSD requests:\n");
 399                 list_for_each_entry(gem_request,
 400                                     &dev_priv->ring[VCS].request_list,
 401                                     list) {
 402                         seq_printf(m, "    %d @ %d\n",
 403                                    gem_request->seqno,
 404                                    (int) (jiffies - gem_request->emitted_jiffies));
 405                 }
 406                 count++;
 407         }
 408         if (!list_empty(&dev_priv->ring[BCS].request_list)) {
 409                 seq_printf(m, "BLT requests:\n");
 410                 list_for_each_entry(gem_request,
 411                                     &dev_priv->ring[BCS].request_list,
 412                                     list) {
 413                         seq_printf(m, "    %d @ %d\n",
 414                                    gem_request->seqno,
 415                                    (int) (jiffies - gem_request->emitted_jiffies));
 416                 }
 417                 count++;
 418         }
 419         mutex_unlock(&dev->struct_mutex);
 420
 421         if (count == 0)
 422                 seq_printf(m, "No requests\n");
 423
 424         return 0;
 425 }
 426
 427 static void i915_ring_seqno_info(struct seq_file *m,
 428                                  struct intel_ring_buffer *ring)
 429 {
 430         if (ring->get_seqno) {
 431                 seq_printf(m, "Current sequence (%s): %d\n",
 432                            ring->name, ring->get_seqno(ring));
 433                 seq_printf(m, "Waiter sequence (%s):  %d\n",
 434                            ring->name, ring->waiting_seqno);
 435                 seq_printf(m, "IRQ sequence (%s):     %d\n",
 436                            ring->name, ring->irq_seqno);
 437         }
 438 }
 439
 440 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 441 {
 442         struct drm_info_node *node = (struct drm_info_node *) m->private;
 443         struct drm_device *dev = node->minor->dev;
 444         drm_i915_private_t *dev_priv = dev->dev_private;
 445         int ret, i;
 446
 447         ret = mutex_lock_interruptible(&dev->struct_mutex);
 448         if (ret)
 449                 return ret;
 450
 451         for (i = 0; i < I915_NUM_RINGS; i++)
 452                 i915_ring_seqno_info(m, &dev_priv->ring[i]);
 453
 454         mutex_unlock(&dev->struct_mutex);
 455
 456         return 0;
 457 }
 458
 459
 460 static int i915_interrupt_info(struct seq_file *m, void *data)
 461 {
 462         struct drm_info_node *node = (struct drm_info_node *) m->private;
 463         struct drm_device *dev = node->minor->dev;
 464         drm_i915_private_t *dev_priv = dev->dev_private;
 465         int ret, i, pipe;
 466
 467         ret = mutex_lock_interruptible(&dev->struct_mutex);
 468         if (ret)
 469                 return ret;
 470
 471         if (!HAS_PCH_SPLIT(dev)) {
 472                 seq_printf(m, "Interrupt enable:    %08x\n",
 473                            I915_READ(IER));
 474                 seq_printf(m, "Interrupt identity:  %08x\n",
 475                            I915_READ(IIR));
 476                 seq_printf(m, "Interrupt mask:      %08x\n",
 477                            I915_READ(IMR));
 478                 for_each_pipe(pipe)
 479                         seq_printf(m, "Pipe %c stat:         %08x\n",
 480                                    pipe_name(pipe),
 481                                    I915_READ(PIPESTAT(pipe)));
 482         } else {
 483                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
 484                            I915_READ(DEIER));
 485                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
 486                            I915_READ(DEIIR));
 487                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
 488                            I915_READ(DEIMR));
 489                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
 490                            I915_READ(SDEIER));
 491                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
 492                            I915_READ(SDEIIR));
 493                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
 494                            I915_READ(SDEIMR));
 495                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
 496                            I915_READ(GTIER));
 497                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
 498                            I915_READ(GTIIR));
 499                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
 500                            I915_READ(GTIMR));
 501         }
 502         seq_printf(m, "Interrupts received: %d\n",
 503                    atomic_read(&dev_priv->irq_received));
 504         for (i = 0; i < I915_NUM_RINGS; i++) {
 505                 if (IS_GEN6(dev) || IS_GEN7(dev)) {
 506                         seq_printf(m, "Graphics Interrupt mask (%s):    %08x\n",
 507                                    dev_priv->ring[i].name,
 508                                    I915_READ_IMR(&dev_priv->ring[i]));
 509                 }
 510                 i915_ring_seqno_info(m, &dev_priv->ring[i]);
 511         }
 512         mutex_unlock(&dev->struct_mutex);
 513
 514         return 0;
 515 }
 516
 517 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 518 {
 519         struct drm_info_node *node = (struct drm_info_node *) m->private;
 520         struct drm_device *dev = node->minor->dev;
 521         drm_i915_private_t *dev_priv = dev->dev_private;
 522         int i, ret;
 523
 524         ret = mutex_lock_interruptible(&dev->struct_mutex);
 525         if (ret)
 526                 return ret;
 527
 528         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 529         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 530         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 531                 struct drm_i915_gem_object *obj = dev_priv->fence_regs[i].obj;
 532
 533                 seq_printf(m, "Fenced object[%2d] = ", i);
 534                 if (obj == NULL)
 535                         seq_printf(m, "unused");
 536                 else
 537                         describe_obj(m, obj);
 538                 seq_printf(m, "\n");
 539         }
 540
 541         mutex_unlock(&dev->struct_mutex);
 542         return 0;
 543 }
 544
 545 static int i915_hws_info(struct seq_file *m, void *data)
 546 {
 547         struct drm_info_node *node = (struct drm_info_node *) m->private;
 548         struct drm_device *dev = node->minor->dev;
 549         drm_i915_private_t *dev_priv = dev->dev_private;
 550         struct intel_ring_buffer *ring;
 551         const volatile u32 __iomem *hws;
 552         int i;
 553
 554         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 555         hws = (volatile u32 __iomem *)ring->status_page.page_addr;
 556         if (hws == NULL)
 557                 return 0;
 558
 559         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 560                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 561                            i * 4,
 562                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 563         }
 564         return 0;
 565 }
 566
 567 static void i915_dump_object(struct seq_file *m,
 568                              struct io_mapping *mapping,
 569                              struct drm_i915_gem_object *obj)
 570 {
 571         int page, page_count, i;
 572
 573         page_count = obj->base.size / PAGE_SIZE;
 574         for (page = 0; page < page_count; page++) {
 575                 u32 *mem = io_mapping_map_wc(mapping,
 576                                              obj->gtt_offset + page * PAGE_SIZE);
 577                 for (i = 0; i < PAGE_SIZE; i += 4)
 578                         seq_printf(m, "%08x :  %08x\n", i, mem[i / 4]);
 579                 io_mapping_unmap(mem);
 580         }
 581 }
 582
 583 static int i915_batchbuffer_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 drm_i915_gem_object *obj;
 589         int ret;
 590
 591         ret = mutex_lock_interruptible(&dev->struct_mutex);
 592         if (ret)
 593                 return ret;
 594
 595         list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list) {
 596                 if (obj->base.read_domains & I915_GEM_DOMAIN_COMMAND) {
 597                     seq_printf(m, "--- gtt_offset = 0x%08x\n", obj->gtt_offset);
 598                     i915_dump_object(m, dev_priv->mm.gtt_mapping, obj);
 599                 }
 600         }
 601
 602         mutex_unlock(&dev->struct_mutex);
 603         return 0;
 604 }
 605
 606 static int i915_ringbuffer_data(struct seq_file *m, void *data)
 607 {
 608         struct drm_info_node *node = (struct drm_info_node *) m->private;
 609         struct drm_device *dev = node->minor->dev;
 610         drm_i915_private_t *dev_priv = dev->dev_private;
 611         struct intel_ring_buffer *ring;
 612         int ret;
 613
 614         ret = mutex_lock_interruptible(&dev->struct_mutex);
 615         if (ret)
 616                 return ret;
 617
 618         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 619         if (!ring->obj) {
 620                 seq_printf(m, "No ringbuffer setup\n");
 621         } else {
 622                 const u8 __iomem *virt = ring->virtual_start;
 623                 uint32_t off;
 624
 625                 for (off = 0; off < ring->size; off += 4) {
 626                         uint32_t *ptr = (uint32_t *)(virt + off);
 627                         seq_printf(m, "%08x :  %08x\n", off, *ptr);
 628                 }
 629         }
 630         mutex_unlock(&dev->struct_mutex);
 631
 632         return 0;
 633 }
 634
 635 static int i915_ringbuffer_info(struct seq_file *m, void *data)
 636 {
 637         struct drm_info_node *node = (struct drm_info_node *) m->private;
 638         struct drm_device *dev = node->minor->dev;
 639         drm_i915_private_t *dev_priv = dev->dev_private;
 640         struct intel_ring_buffer *ring;
 641         int ret;
 642
 643         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 644         if (ring->size == 0)
 645                 return 0;
 646
 647         ret = mutex_lock_interruptible(&dev->struct_mutex);
 648         if (ret)
 649                 return ret;
 650
 651         seq_printf(m, "Ring %s:\n", ring->name);
 652         seq_printf(m, "  Head :    %08x\n", I915_READ_HEAD(ring) & HEAD_ADDR);
 653         seq_printf(m, "  Tail :    %08x\n", I915_READ_TAIL(ring) & TAIL_ADDR);
 654         seq_printf(m, "  Size :    %08x\n", ring->size);
 655         seq_printf(m, "  Active :  %08x\n", intel_ring_get_active_head(ring));
 656         seq_printf(m, "  NOPID :   %08x\n", I915_READ_NOPID(ring));
 657         if (IS_GEN6(dev)) {
 658                 seq_printf(m, "  Sync 0 :   %08x\n", I915_READ_SYNC_0(ring));
 659                 seq_printf(m, "  Sync 1 :   %08x\n", I915_READ_SYNC_1(ring));
 660         }
 661         seq_printf(m, "  Control : %08x\n", I915_READ_CTL(ring));
 662         seq_printf(m, "  Start :   %08x\n", I915_READ_START(ring));
 663
 664         mutex_unlock(&dev->struct_mutex);
 665
 666         return 0;
 667 }
 668
 669 static const char *ring_str(int ring)
 670 {
 671         switch (ring) {
 672         case RING_RENDER: return " render";
 673         case RING_BSD: return " bsd";
 674         case RING_BLT: return " blt";
 675         default: return "";
 676         }
 677 }
 678
 679 static const char *pin_flag(int pinned)
 680 {
 681         if (pinned > 0)
 682                 return " P";
 683         else if (pinned < 0)
 684                 return " p";
 685         else
 686                 return "";
 687 }
 688
 689 static const char *tiling_flag(int tiling)
 690 {
 691         switch (tiling) {
 692         default:
 693         case I915_TILING_NONE: return "";
 694         case I915_TILING_X: return " X";
 695         case I915_TILING_Y: return " Y";
 696         }
 697 }
 698
 699 static const char *dirty_flag(int dirty)
 700 {
 701         return dirty ? " dirty" : "";
 702 }
 703
 704 static const char *purgeable_flag(int purgeable)
 705 {
 706         return purgeable ? " purgeable" : "";
 707 }
 708
 709 static void print_error_buffers(struct seq_file *m,
 710                                 const char *name,
 711                                 struct drm_i915_error_buffer *err,
 712                                 int count)
 713 {
 714         seq_printf(m, "%s [%d]:\n", name, count);
 715
 716         while (count--) {
 717                 seq_printf(m, "  %08x %8u %04x %04x %08x%s%s%s%s%s%s",
 718                            err->gtt_offset,
 719                            err->size,
 720                            err->read_domains,
 721                            err->write_domain,
 722                            err->seqno,
 723                            pin_flag(err->pinned),
 724                            tiling_flag(err->tiling),
 725                            dirty_flag(err->dirty),
 726                            purgeable_flag(err->purgeable),
 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 int i915_error_state(struct seq_file *m, void *unused)
 741 {
 742         struct drm_info_node *node = (struct drm_info_node *) m->private;
 743         struct drm_device *dev = node->minor->dev;
 744         drm_i915_private_t *dev_priv = dev->dev_private;
 745         struct drm_i915_error_state *error;
 746         unsigned long flags;
 747         int i, page, offset, elt;
 748
 749         spin_lock_irqsave(&dev_priv->error_lock, flags);
 750         if (!dev_priv->first_error) {
 751                 seq_printf(m, "no error state collected\n");
 752                 goto out;
 753         }
 754
 755         error = dev_priv->first_error;
 756
 757         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 758                    error->time.tv_usec);
 759         seq_printf(m, "Kernel: " UTS_RELEASE "\n");
 760         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
 761         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 762         seq_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 763         if (INTEL_INFO(dev)->gen >= 6) {
 764                 seq_printf(m, "ERROR: 0x%08x\n", error->error);
 765                 seq_printf(m, "Blitter command stream:\n");
 766                 seq_printf(m, "  ACTHD:    0x%08x\n", error->bcs_acthd);
 767                 seq_printf(m, "  IPEIR:    0x%08x\n", error->bcs_ipeir);
 768                 seq_printf(m, "  IPEHR:    0x%08x\n", error->bcs_ipehr);
 769                 seq_printf(m, "  INSTDONE: 0x%08x\n", error->bcs_instdone);
 770                 seq_printf(m, "  seqno:    0x%08x\n", error->bcs_seqno);
 771                 seq_printf(m, "Video (BSD) command stream:\n");
 772                 seq_printf(m, "  ACTHD:    0x%08x\n", error->vcs_acthd);
 773                 seq_printf(m, "  IPEIR:    0x%08x\n", error->vcs_ipeir);
 774                 seq_printf(m, "  IPEHR:    0x%08x\n", error->vcs_ipehr);
 775                 seq_printf(m, "  INSTDONE: 0x%08x\n", error->vcs_instdone);
 776                 seq_printf(m, "  seqno:    0x%08x\n", error->vcs_seqno);
 777         }
 778         seq_printf(m, "Render command stream:\n");
 779         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd);
 780         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir);
 781         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr);
 782         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone);
 783         if (INTEL_INFO(dev)->gen >= 4) {
 784                 seq_printf(m, "  INSTDONE1: 0x%08x\n", error->instdone1);
 785                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps);
 786         }
 787         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm);
 788         seq_printf(m, "  seqno: 0x%08x\n", error->seqno);
 789
 790         for (i = 0; i < dev_priv->num_fence_regs; i++)
 791                 seq_printf(m, "  fence[%d] = %08llx\n", i, error->fence[i]);
 792
 793         if (error->active_bo)
 794                 print_error_buffers(m, "Active",
 795                                     error->active_bo,
 796                                     error->active_bo_count);
 797
 798         if (error->pinned_bo)
 799                 print_error_buffers(m, "Pinned",
 800                                     error->pinned_bo,
 801                                     error->pinned_bo_count);
 802
 803         for (i = 0; i < ARRAY_SIZE(error->batchbuffer); i++) {
 804                 if (error->batchbuffer[i]) {
 805                         struct drm_i915_error_object *obj = error->batchbuffer[i];
 806
 807                         seq_printf(m, "%s --- gtt_offset = 0x%08x\n",
 808                                    dev_priv->ring[i].name,
 809                                    obj->gtt_offset);
 810                         offset = 0;
 811                         for (page = 0; page < obj->page_count; page++) {
 812                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 813                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 814                                         offset += 4;
 815                                 }
 816                         }
 817                 }
 818         }
 819
 820         for (i = 0; i < ARRAY_SIZE(error->ringbuffer); i++) {
 821                 if (error->ringbuffer[i]) {
 822                         struct drm_i915_error_object *obj = error->ringbuffer[i];
 823                         seq_printf(m, "%s --- ringbuffer = 0x%08x\n",
 824                                    dev_priv->ring[i].name,
 825                                    obj->gtt_offset);
 826                         offset = 0;
 827                         for (page = 0; page < obj->page_count; page++) {
 828                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 829                                         seq_printf(m, "%08x :  %08x\n",
 830                                                    offset,
 831                                                    obj->pages[page][elt]);
 832                                         offset += 4;
 833                                 }
 834                         }
 835                 }
 836         }
 837
 838         if (error->overlay)
 839                 intel_overlay_print_error_state(m, error->overlay);
 840
 841         if (error->display)
 842                 intel_display_print_error_state(m, dev, error->display);
 843
 844 out:
 845         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
 846
 847         return 0;
 848 }
 849
 850 static int i915_rstdby_delays(struct seq_file *m, void *unused)
 851 {
 852         struct drm_info_node *node = (struct drm_info_node *) m->private;
 853         struct drm_device *dev = node->minor->dev;
 854         drm_i915_private_t *dev_priv = dev->dev_private;
 855         u16 crstanddelay;
 856         int ret;
 857
 858         ret = mutex_lock_interruptible(&dev->struct_mutex);
 859         if (ret)
 860                 return ret;
 861
 862         crstanddelay = I915_READ16(CRSTANDVID);
 863
 864         mutex_unlock(&dev->struct_mutex);
 865
 866         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
 867
 868         return 0;
 869 }
 870
 871 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
 872 {
 873         struct drm_info_node *node = (struct drm_info_node *) m->private;
 874         struct drm_device *dev = node->minor->dev;
 875         drm_i915_private_t *dev_priv = dev->dev_private;
 876         int ret;
 877
 878         if (IS_GEN5(dev)) {
 879                 u16 rgvswctl = I915_READ16(MEMSWCTL);
 880                 u16 rgvstat = I915_READ16(MEMSTAT_ILK);
 881
 882                 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 883                 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
 884                 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 885                            MEMSTAT_VID_SHIFT);
 886                 seq_printf(m, "Current P-state: %d\n",
 887                            (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
 888         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
 889                 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
 890                 u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
 891                 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
 892                 u32 rpstat;
 893                 u32 rpupei, rpcurup, rpprevup;
 894                 u32 rpdownei, rpcurdown, rpprevdown;
 895                 int max_freq;
 896
 897                 /* RPSTAT1 is in the GT power well */
 898                 ret = mutex_lock_interruptible(&dev->struct_mutex);
 899                 if (ret)
 900                         return ret;
 901
 902                 gen6_gt_force_wake_get(dev_priv);
 903
 904                 rpstat = I915_READ(GEN6_RPSTAT1);
 905                 rpupei = I915_READ(GEN6_RP_CUR_UP_EI);
 906                 rpcurup = I915_READ(GEN6_RP_CUR_UP);
 907                 rpprevup = I915_READ(GEN6_RP_PREV_UP);
 908                 rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI);
 909                 rpcurdown = I915_READ(GEN6_RP_CUR_DOWN);
 910                 rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
 911
 912                 gen6_gt_force_wake_put(dev_priv);
 913                 mutex_unlock(&dev->struct_mutex);
 914
 915                 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
 916                 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
 917                 seq_printf(m, "Render p-state ratio: %d\n",
 918                            (gt_perf_status & 0xff00) >> 8);
 919                 seq_printf(m, "Render p-state VID: %d\n",
 920                            gt_perf_status & 0xff);
 921                 seq_printf(m, "Render p-state limit: %d\n",
 922                            rp_state_limits & 0xff);
 923                 seq_printf(m, "CAGF: %dMHz\n", ((rpstat & GEN6_CAGF_MASK) >>
 924                                                 GEN6_CAGF_SHIFT) * 50);
 925                 seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
 926                            GEN6_CURICONT_MASK);
 927                 seq_printf(m, "RP CUR UP: %dus\n", rpcurup &
 928                            GEN6_CURBSYTAVG_MASK);
 929                 seq_printf(m, "RP PREV UP: %dus\n", rpprevup &
 930                            GEN6_CURBSYTAVG_MASK);
 931                 seq_printf(m, "RP CUR DOWN EI: %dus\n", rpdownei &
 932                            GEN6_CURIAVG_MASK);
 933                 seq_printf(m, "RP CUR DOWN: %dus\n", rpcurdown &
 934                            GEN6_CURBSYTAVG_MASK);
 935                 seq_printf(m, "RP PREV DOWN: %dus\n", rpprevdown &
 936                            GEN6_CURBSYTAVG_MASK);
 937
 938                 max_freq = (rp_state_cap & 0xff0000) >> 16;
 939                 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
 940                            max_freq * 50);
 941
 942                 max_freq = (rp_state_cap & 0xff00) >> 8;
 943                 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
 944                            max_freq * 50);
 945
 946                 max_freq = rp_state_cap & 0xff;
 947                 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
 948                            max_freq * 50);
 949         } else {
 950                 seq_printf(m, "no P-state info available\n");
 951         }
 952
 953         return 0;
 954 }
 955
 956 static int i915_delayfreq_table(struct seq_file *m, void *unused)
 957 {
 958         struct drm_info_node *node = (struct drm_info_node *) m->private;
 959         struct drm_device *dev = node->minor->dev;
 960         drm_i915_private_t *dev_priv = dev->dev_private;
 961         u32 delayfreq;
 962         int ret, i;
 963
 964         ret = mutex_lock_interruptible(&dev->struct_mutex);
 965         if (ret)
 966                 return ret;
 967
 968         for (i = 0; i < 16; i++) {
 969                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
 970                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
 971                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
 972         }
 973
 974         mutex_unlock(&dev->struct_mutex);
 975
 976         return 0;
 977 }
 978
 979 static inline int MAP_TO_MV(int map)
 980 {
 981         return 1250 - (map * 25);
 982 }
 983
 984 static int i915_inttoext_table(struct seq_file *m, void *unused)
 985 {
 986         struct drm_info_node *node = (struct drm_info_node *) m->private;
 987         struct drm_device *dev = node->minor->dev;
 988         drm_i915_private_t *dev_priv = dev->dev_private;
 989         u32 inttoext;
 990         int ret, i;
 991
 992         ret = mutex_lock_interruptible(&dev->struct_mutex);
 993         if (ret)
 994                 return ret;
 995
 996         for (i = 1; i <= 32; i++) {
 997                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
 998                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
 999         }
1000
1001         mutex_unlock(&dev->struct_mutex);
1002
1003         return 0;
1004 }
1005
1006 static int i915_drpc_info(struct seq_file *m, void *unused)
1007 {
1008         struct drm_info_node *node = (struct drm_info_node *) m->private;
1009         struct drm_device *dev = node->minor->dev;
1010         drm_i915_private_t *dev_priv = dev->dev_private;
1011         u32 rgvmodectl, rstdbyctl;
1012         u16 crstandvid;
1013         int ret;
1014
1015         ret = mutex_lock_interruptible(&dev->struct_mutex);
1016         if (ret)
1017                 return ret;
1018
1019         rgvmodectl = I915_READ(MEMMODECTL);
1020         rstdbyctl = I915_READ(RSTDBYCTL);
1021         crstandvid = I915_READ16(CRSTANDVID);
1022
1023         mutex_unlock(&dev->struct_mutex);
1024
1025         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
1026                    "yes" : "no");
1027         seq_printf(m, "Boost freq: %d\n",
1028                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
1029                    MEMMODE_BOOST_FREQ_SHIFT);
1030         seq_printf(m, "HW control enabled: %s\n",
1031                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
1032         seq_printf(m, "SW control enabled: %s\n",
1033                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
1034         seq_printf(m, "Gated voltage change: %s\n",
1035                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
1036         seq_printf(m, "Starting frequency: P%d\n",
1037                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
1038         seq_printf(m, "Max P-state: P%d\n",
1039                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
1040         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
1041         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
1042         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
1043         seq_printf(m, "Render standby enabled: %s\n",
1044                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
1045         seq_printf(m, "Current RS state: ");
1046         switch (rstdbyctl & RSX_STATUS_MASK) {
1047         case RSX_STATUS_ON:
1048                 seq_printf(m, "on\n");
1049                 break;
1050         case RSX_STATUS_RC1:
1051                 seq_printf(m, "RC1\n");
1052                 break;
1053         case RSX_STATUS_RC1E:
1054                 seq_printf(m, "RC1E\n");
1055                 break;
1056         case RSX_STATUS_RS1:
1057                 seq_printf(m, "RS1\n");
1058                 break;
1059         case RSX_STATUS_RS2:
1060                 seq_printf(m, "RS2 (RC6)\n");
1061                 break;
1062         case RSX_STATUS_RS3:
1063                 seq_printf(m, "RC3 (RC6+)\n");
1064                 break;
1065         default:
1066                 seq_printf(m, "unknown\n");
1067                 break;
1068         }
1069
1070         return 0;
1071 }
1072
1073 static int i915_fbc_status(struct seq_file *m, void *unused)
1074 {
1075         struct drm_info_node *node = (struct drm_info_node *) m->private;
1076         struct drm_device *dev = node->minor->dev;
1077         drm_i915_private_t *dev_priv = dev->dev_private;
1078
1079         if (!I915_HAS_FBC(dev)) {
1080                 seq_printf(m, "FBC unsupported on this chipset\n");
1081                 return 0;
1082         }
1083
1084         if (intel_fbc_enabled(dev)) {
1085                 seq_printf(m, "FBC enabled\n");
1086         } else {
1087                 seq_printf(m, "FBC disabled: ");
1088                 switch (dev_priv->no_fbc_reason) {
1089                 case FBC_NO_OUTPUT:
1090                         seq_printf(m, "no outputs");
1091                         break;
1092                 case FBC_STOLEN_TOO_SMALL:
1093                         seq_printf(m, "not enough stolen memory");
1094                         break;
1095                 case FBC_UNSUPPORTED_MODE:
1096                         seq_printf(m, "mode not supported");
1097                         break;
1098                 case FBC_MODE_TOO_LARGE:
1099                         seq_printf(m, "mode too large");
1100                         break;
1101                 case FBC_BAD_PLANE:
1102                         seq_printf(m, "FBC unsupported on plane");
1103                         break;
1104                 case FBC_NOT_TILED:
1105                         seq_printf(m, "scanout buffer not tiled");
1106                         break;
1107                 case FBC_MULTIPLE_PIPES:
1108                         seq_printf(m, "multiple pipes are enabled");
1109                         break;
1110                 case FBC_MODULE_PARAM:
1111                         seq_printf(m, "disabled per module param (default off)");
1112                         break;
1113                 default:
1114                         seq_printf(m, "unknown reason");
1115                 }
1116                 seq_printf(m, "\n");
1117         }
1118         return 0;
1119 }
1120
1121 static int i915_sr_status(struct seq_file *m, void *unused)
1122 {
1123         struct drm_info_node *node = (struct drm_info_node *) m->private;
1124         struct drm_device *dev = node->minor->dev;
1125         drm_i915_private_t *dev_priv = dev->dev_private;
1126         bool sr_enabled = false;
1127
1128         if (HAS_PCH_SPLIT(dev))
1129                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1130         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
1131                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1132         else if (IS_I915GM(dev))
1133                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1134         else if (IS_PINEVIEW(dev))
1135                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1136
1137         seq_printf(m, "self-refresh: %s\n",
1138                    sr_enabled ? "enabled" : "disabled");
1139
1140         return 0;
1141 }
1142
1143 static int i915_emon_status(struct seq_file *m, void *unused)
1144 {
1145         struct drm_info_node *node = (struct drm_info_node *) m->private;
1146         struct drm_device *dev = node->minor->dev;
1147         drm_i915_private_t *dev_priv = dev->dev_private;
1148         unsigned long temp, chipset, gfx;
1149         int ret;
1150
1151         ret = mutex_lock_interruptible(&dev->struct_mutex);
1152         if (ret)
1153                 return ret;
1154
1155         temp = i915_mch_val(dev_priv);
1156         chipset = i915_chipset_val(dev_priv);
1157         gfx = i915_gfx_val(dev_priv);
1158         mutex_unlock(&dev->struct_mutex);
1159
1160         seq_printf(m, "GMCH temp: %ld\n", temp);
1161         seq_printf(m, "Chipset power: %ld\n", chipset);
1162         seq_printf(m, "GFX power: %ld\n", gfx);
1163         seq_printf(m, "Total power: %ld\n", chipset + gfx);
1164
1165         return 0;
1166 }
1167
1168 static int i915_ring_freq_table(struct seq_file *m, void *unused)
1169 {
1170         struct drm_info_node *node = (struct drm_info_node *) m->private;
1171         struct drm_device *dev = node->minor->dev;
1172         drm_i915_private_t *dev_priv = dev->dev_private;
1173         int ret;
1174         int gpu_freq, ia_freq;
1175
1176         if (!(IS_GEN6(dev) || IS_GEN7(dev))) {
1177                 seq_printf(m, "unsupported on this chipset\n");
1178                 return 0;
1179         }
1180
1181         ret = mutex_lock_interruptible(&dev->struct_mutex);
1182         if (ret)
1183                 return ret;
1184
1185         seq_printf(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\n");
1186
1187         for (gpu_freq = dev_priv->min_delay; gpu_freq <= dev_priv->max_delay;
1188              gpu_freq++) {
1189                 I915_WRITE(GEN6_PCODE_DATA, gpu_freq);
1190                 I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY |
1191                            GEN6_PCODE_READ_MIN_FREQ_TABLE);
1192                 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) &
1193                               GEN6_PCODE_READY) == 0, 10)) {
1194                         DRM_ERROR("pcode read of freq table timed out\n");
1195                         continue;
1196                 }
1197                 ia_freq = I915_READ(GEN6_PCODE_DATA);
1198                 seq_printf(m, "%d\t\t%d\n", gpu_freq * 50, ia_freq * 100);
1199         }
1200
1201         mutex_unlock(&dev->struct_mutex);
1202
1203         return 0;
1204 }
1205
1206 static int i915_gfxec(struct seq_file *m, void *unused)
1207 {
1208         struct drm_info_node *node = (struct drm_info_node *) m->private;
1209         struct drm_device *dev = node->minor->dev;
1210         drm_i915_private_t *dev_priv = dev->dev_private;
1211         int ret;
1212
1213         ret = mutex_lock_interruptible(&dev->struct_mutex);
1214         if (ret)
1215                 return ret;
1216
1217         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
1218
1219         mutex_unlock(&dev->struct_mutex);
1220
1221         return 0;
1222 }
1223
1224 static int i915_opregion(struct seq_file *m, void *unused)
1225 {
1226         struct drm_info_node *node = (struct drm_info_node *) m->private;
1227         struct drm_device *dev = node->minor->dev;
1228         drm_i915_private_t *dev_priv = dev->dev_private;
1229         struct intel_opregion *opregion = &dev_priv->opregion;
1230         int ret;
1231
1232         ret = mutex_lock_interruptible(&dev->struct_mutex);
1233         if (ret)
1234                 return ret;
1235
1236         if (opregion->header)
1237                 seq_write(m, opregion->header, OPREGION_SIZE);
1238
1239         mutex_unlock(&dev->struct_mutex);
1240
1241         return 0;
1242 }
1243
1244 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
1245 {
1246         struct drm_info_node *node = (struct drm_info_node *) m->private;
1247         struct drm_device *dev = node->minor->dev;
1248         drm_i915_private_t *dev_priv = dev->dev_private;
1249         struct intel_fbdev *ifbdev;
1250         struct intel_framebuffer *fb;
1251         int ret;
1252
1253         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1254         if (ret)
1255                 return ret;
1256
1257         ifbdev = dev_priv->fbdev;
1258         fb = to_intel_framebuffer(ifbdev->helper.fb);
1259
1260         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
1261                    fb->base.width,
1262                    fb->base.height,
1263                    fb->base.depth,
1264                    fb->base.bits_per_pixel);
1265         describe_obj(m, fb->obj);
1266         seq_printf(m, "\n");
1267
1268         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
1269                 if (&fb->base == ifbdev->helper.fb)
1270                         continue;
1271
1272                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
1273                            fb->base.width,
1274                            fb->base.height,
1275                            fb->base.depth,
1276                            fb->base.bits_per_pixel);
1277                 describe_obj(m, fb->obj);
1278                 seq_printf(m, "\n");
1279         }
1280
1281         mutex_unlock(&dev->mode_config.mutex);
1282
1283         return 0;
1284 }
1285
1286 static int i915_context_status(struct seq_file *m, void *unused)
1287 {
1288         struct drm_info_node *node = (struct drm_info_node *) m->private;
1289         struct drm_device *dev = node->minor->dev;
1290         drm_i915_private_t *dev_priv = dev->dev_private;
1291         int ret;
1292
1293         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1294         if (ret)
1295                 return ret;
1296
1297         if (dev_priv->pwrctx) {
1298                 seq_printf(m, "power context ");
1299                 describe_obj(m, dev_priv->pwrctx);
1300                 seq_printf(m, "\n");
1301         }
1302
1303         if (dev_priv->renderctx) {
1304                 seq_printf(m, "render context ");
1305                 describe_obj(m, dev_priv->renderctx);
1306                 seq_printf(m, "\n");
1307         }
1308
1309         mutex_unlock(&dev->mode_config.mutex);
1310
1311         return 0;
1312 }
1313
1314 static int i915_gen6_forcewake_count_info(struct seq_file *m, void *data)
1315 {
1316         struct drm_info_node *node = (struct drm_info_node *) m->private;
1317         struct drm_device *dev = node->minor->dev;
1318         struct drm_i915_private *dev_priv = dev->dev_private;
1319         unsigned forcewake_count;
1320
1321         spin_lock_irq(&dev_priv->gt_lock);
1322         forcewake_count = dev_priv->forcewake_count;
1323         spin_unlock_irq(&dev_priv->gt_lock);
1324
1325         seq_printf(m, "forcewake count = %u\n", forcewake_count);
1326
1327         return 0;
1328 }
1329
1330 static int
1331 i915_wedged_open(struct inode *inode,
1332                  struct file *filp)
1333 {
1334         filp->private_data = inode->i_private;
1335         return 0;
1336 }
1337
1338 static ssize_t
1339 i915_wedged_read(struct file *filp,
1340                  char __user *ubuf,
1341                  size_t max,
1342                  loff_t *ppos)
1343 {
1344         struct drm_device *dev = filp->private_data;
1345         drm_i915_private_t *dev_priv = dev->dev_private;
1346         char buf[80];
1347         int len;
1348
1349         len = snprintf(buf, sizeof(buf),
1350                        "wedged :  %d\n",
1351                        atomic_read(&dev_priv->mm.wedged));
1352
1353         if (len > sizeof(buf))
1354                 len = sizeof(buf);
1355
1356         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1357 }
1358
1359 static ssize_t
1360 i915_wedged_write(struct file *filp,
1361                   const char __user *ubuf,
1362                   size_t cnt,
1363                   loff_t *ppos)
1364 {
1365         struct drm_device *dev = filp->private_data;
1366         char buf[20];
1367         int val = 1;
1368
1369         if (cnt > 0) {
1370                 if (cnt > sizeof(buf) - 1)
1371                         return -EINVAL;
1372
1373                 if (copy_from_user(buf, ubuf, cnt))
1374                         return -EFAULT;
1375                 buf[cnt] = 0;
1376
1377                 val = simple_strtoul(buf, NULL, 0);
1378         }
1379
1380         DRM_INFO("Manually setting wedged to %d\n", val);
1381         i915_handle_error(dev, val);
1382
1383         return cnt;
1384 }
1385
1386 static const struct file_operations i915_wedged_fops = {
1387         .owner = THIS_MODULE,
1388         .open = i915_wedged_open,
1389         .read = i915_wedged_read,
1390         .write = i915_wedged_write,
1391         .llseek = default_llseek,
1392 };
1393
1394 static int
1395 i915_max_freq_open(struct inode *inode,
1396                    struct file *filp)
1397 {
1398         filp->private_data = inode->i_private;
1399         return 0;
1400 }
1401
1402 static ssize_t
1403 i915_max_freq_read(struct file *filp,
1404                    char __user *ubuf,
1405                    size_t max,
1406                    loff_t *ppos)
1407 {
1408         struct drm_device *dev = filp->private_data;
1409         drm_i915_private_t *dev_priv = dev->dev_private;
1410         char buf[80];
1411         int len;
1412
1413         len = snprintf(buf, sizeof(buf),
1414                        "max freq: %d\n", dev_priv->max_delay * 50);
1415
1416         if (len > sizeof(buf))
1417                 len = sizeof(buf);
1418
1419         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1420 }
1421
1422 static ssize_t
1423 i915_max_freq_write(struct file *filp,
1424                   const char __user *ubuf,
1425                   size_t cnt,
1426                   loff_t *ppos)
1427 {
1428         struct drm_device *dev = filp->private_data;
1429         struct drm_i915_private *dev_priv = dev->dev_private;
1430         char buf[20];
1431         int val = 1;
1432
1433         if (cnt > 0) {
1434                 if (cnt > sizeof(buf) - 1)
1435                         return -EINVAL;
1436
1437                 if (copy_from_user(buf, ubuf, cnt))
1438                         return -EFAULT;
1439                 buf[cnt] = 0;
1440
1441                 val = simple_strtoul(buf, NULL, 0);
1442         }
1443
1444         DRM_DEBUG_DRIVER("Manually setting max freq to %d\n", val);
1445
1446         /*
1447          * Turbo will still be enabled, but won't go above the set value.
1448          */
1449         dev_priv->max_delay = val / 50;
1450
1451         gen6_set_rps(dev, val / 50);
1452
1453         return cnt;
1454 }
1455
1456 static const struct file_operations i915_max_freq_fops = {
1457         .owner = THIS_MODULE,
1458         .open = i915_max_freq_open,
1459         .read = i915_max_freq_read,
1460         .write = i915_max_freq_write,
1461         .llseek = default_llseek,
1462 };
1463
1464 static int
1465 i915_cache_sharing_open(struct inode *inode,
1466                    struct file *filp)
1467 {
1468         filp->private_data = inode->i_private;
1469         return 0;
1470 }
1471
1472 static ssize_t
1473 i915_cache_sharing_read(struct file *filp,
1474                    char __user *ubuf,
1475                    size_t max,
1476                    loff_t *ppos)
1477 {
1478         struct drm_device *dev = filp->private_data;
1479         drm_i915_private_t *dev_priv = dev->dev_private;
1480         char buf[80];
1481         u32 snpcr;
1482         int len;
1483
1484         mutex_lock(&dev_priv->dev->struct_mutex);
1485         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1486         mutex_unlock(&dev_priv->dev->struct_mutex);
1487
1488         len = snprintf(buf, sizeof(buf),
1489                        "%d\n", (snpcr & GEN6_MBC_SNPCR_MASK) >>
1490                        GEN6_MBC_SNPCR_SHIFT);
1491
1492         if (len > sizeof(buf))
1493                 len = sizeof(buf);
1494
1495         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1496 }
1497
1498 static ssize_t
1499 i915_cache_sharing_write(struct file *filp,
1500                   const char __user *ubuf,
1501                   size_t cnt,
1502                   loff_t *ppos)
1503 {
1504         struct drm_device *dev = filp->private_data;
1505         struct drm_i915_private *dev_priv = dev->dev_private;
1506         char buf[20];
1507         u32 snpcr;
1508         int val = 1;
1509
1510         if (cnt > 0) {
1511                 if (cnt > sizeof(buf) - 1)
1512                         return -EINVAL;
1513
1514                 if (copy_from_user(buf, ubuf, cnt))
1515                         return -EFAULT;
1516                 buf[cnt] = 0;
1517
1518                 val = simple_strtoul(buf, NULL, 0);
1519         }
1520
1521         if (val < 0 || val > 3)
1522                 return -EINVAL;
1523
1524         DRM_DEBUG_DRIVER("Manually setting uncore sharing to %d\n", val);
1525
1526         /* Update the cache sharing policy here as well */
1527         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1528         snpcr &= ~GEN6_MBC_SNPCR_MASK;
1529         snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
1530         I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
1531
1532         return cnt;
1533 }
1534
1535 static const struct file_operations i915_cache_sharing_fops = {
1536         .owner = THIS_MODULE,
1537         .open = i915_cache_sharing_open,
1538         .read = i915_cache_sharing_read,
1539         .write = i915_cache_sharing_write,
1540         .llseek = default_llseek,
1541 };
1542
1543 /* As the drm_debugfs_init() routines are called before dev->dev_private is
1544  * allocated we need to hook into the minor for release. */
1545 static int
1546 drm_add_fake_info_node(struct drm_minor *minor,
1547                        struct dentry *ent,
1548                        const void *key)
1549 {
1550         struct drm_info_node *node;
1551
1552         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
1553         if (node == NULL) {
1554                 debugfs_remove(ent);
1555                 return -ENOMEM;
1556         }
1557
1558         node->minor = minor;
1559         node->dent = ent;
1560         node->info_ent = (void *) key;
1561
1562         mutex_lock(&minor->debugfs_lock);
1563         list_add(&node->list, &minor->debugfs_list);
1564         mutex_unlock(&minor->debugfs_lock);
1565
1566         return 0;
1567 }
1568
1569 static int i915_wedged_create(struct dentry *root, struct drm_minor *minor)
1570 {
1571         struct drm_device *dev = minor->dev;
1572         struct dentry *ent;
1573
1574         ent = debugfs_create_file("i915_wedged",
1575                                   S_IRUGO | S_IWUSR,
1576                                   root, dev,
1577                                   &i915_wedged_fops);
1578         if (IS_ERR(ent))
1579                 return PTR_ERR(ent);
1580
1581         return drm_add_fake_info_node(minor, ent, &i915_wedged_fops);
1582 }
1583
1584 static int i915_forcewake_open(struct inode *inode, struct file *file)
1585 {
1586         struct drm_device *dev = inode->i_private;
1587         struct drm_i915_private *dev_priv = dev->dev_private;
1588         int ret;
1589
1590         if (!IS_GEN6(dev))
1591                 return 0;
1592
1593         ret = mutex_lock_interruptible(&dev->struct_mutex);
1594         if (ret)
1595                 return ret;
1596         gen6_gt_force_wake_get(dev_priv);
1597         mutex_unlock(&dev->struct_mutex);
1598
1599         return 0;
1600 }
1601
1602 int i915_forcewake_release(struct inode *inode, struct file *file)
1603 {
1604         struct drm_device *dev = inode->i_private;
1605         struct drm_i915_private *dev_priv = dev->dev_private;
1606
1607         if (!IS_GEN6(dev))
1608                 return 0;
1609
1610         /*
1611          * It's bad that we can potentially hang userspace if struct_mutex gets
1612          * forever stuck.  However, if we cannot acquire this lock it means that
1613          * almost certainly the driver has hung, is not unload-able. Therefore
1614          * hanging here is probably a minor inconvenience not to be seen my
1615          * almost every user.
1616          */
1617         mutex_lock(&dev->struct_mutex);
1618         gen6_gt_force_wake_put(dev_priv);
1619         mutex_unlock(&dev->struct_mutex);
1620
1621         return 0;
1622 }
1623
1624 static const struct file_operations i915_forcewake_fops = {
1625         .owner = THIS_MODULE,
1626         .open = i915_forcewake_open,
1627         .release = i915_forcewake_release,
1628 };
1629
1630 static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
1631 {
1632         struct drm_device *dev = minor->dev;
1633         struct dentry *ent;
1634
1635         ent = debugfs_create_file("i915_forcewake_user",
1636                                   S_IRUSR,
1637                                   root, dev,
1638                                   &i915_forcewake_fops);
1639         if (IS_ERR(ent))
1640                 return PTR_ERR(ent);
1641
1642         return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
1643 }
1644
1645 static int i915_max_freq_create(struct dentry *root, struct drm_minor *minor)
1646 {
1647         struct drm_device *dev = minor->dev;
1648         struct dentry *ent;
1649
1650         ent = debugfs_create_file("i915_max_freq",
1651                                   S_IRUGO | S_IWUSR,
1652                                   root, dev,
1653                                   &i915_max_freq_fops);
1654         if (IS_ERR(ent))
1655                 return PTR_ERR(ent);
1656
1657         return drm_add_fake_info_node(minor, ent, &i915_max_freq_fops);
1658 }
1659
1660 static int i915_cache_sharing_create(struct dentry *root, struct drm_minor *minor)
1661 {
1662         struct drm_device *dev = minor->dev;
1663         struct dentry *ent;
1664
1665         ent = debugfs_create_file("i915_cache_sharing",
1666                                   S_IRUGO | S_IWUSR,
1667                                   root, dev,
1668                                   &i915_cache_sharing_fops);
1669         if (IS_ERR(ent))
1670                 return PTR_ERR(ent);
1671
1672         return drm_add_fake_info_node(minor, ent, &i915_cache_sharing_fops);
1673 }
1674
1675 static struct drm_info_list i915_debugfs_list[] = {
1676         {"i915_capabilities", i915_capabilities, 0},
1677         {"i915_gem_objects", i915_gem_object_info, 0},
1678         {"i915_gem_gtt", i915_gem_gtt_info, 0},
1679         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
1680         {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
1681         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
1682         {"i915_gem_pinned", i915_gem_object_list_info, 0, (void *) PINNED_LIST},
1683         {"i915_gem_deferred_free", i915_gem_object_list_info, 0, (void *) DEFERRED_FREE_LIST},
1684         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
1685         {"i915_gem_request", i915_gem_request_info, 0},
1686         {"i915_gem_seqno", i915_gem_seqno_info, 0},
1687         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
1688         {"i915_gem_interrupt", i915_interrupt_info, 0},
1689         {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
1690         {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
1691         {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
1692         {"i915_ringbuffer_data", i915_ringbuffer_data, 0, (void *)RCS},
1693         {"i915_ringbuffer_info", i915_ringbuffer_info, 0, (void *)RCS},
1694         {"i915_bsd_ringbuffer_data", i915_ringbuffer_data, 0, (void *)VCS},
1695         {"i915_bsd_ringbuffer_info", i915_ringbuffer_info, 0, (void *)VCS},
1696         {"i915_blt_ringbuffer_data", i915_ringbuffer_data, 0, (void *)BCS},
1697         {"i915_blt_ringbuffer_info", i915_ringbuffer_info, 0, (void *)BCS},
1698         {"i915_batchbuffers", i915_batchbuffer_info, 0},
1699         {"i915_error_state", i915_error_state, 0},
1700         {"i915_rstdby_delays", i915_rstdby_delays, 0},
1701         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
1702         {"i915_delayfreq_table", i915_delayfreq_table, 0},
1703         {"i915_inttoext_table", i915_inttoext_table, 0},
1704         {"i915_drpc_info", i915_drpc_info, 0},
1705         {"i915_emon_status", i915_emon_status, 0},
1706         {"i915_ring_freq_table", i915_ring_freq_table, 0},
1707         {"i915_gfxec", i915_gfxec, 0},
1708         {"i915_fbc_status", i915_fbc_status, 0},
1709         {"i915_sr_status", i915_sr_status, 0},
1710         {"i915_opregion", i915_opregion, 0},
1711         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
1712         {"i915_context_status", i915_context_status, 0},
1713         {"i915_gen6_forcewake_count", i915_gen6_forcewake_count_info, 0},
1714 };
1715 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
1716
1717 int i915_debugfs_init(struct drm_minor *minor)
1718 {
1719         int ret;
1720
1721         ret = i915_wedged_create(minor->debugfs_root, minor);
1722         if (ret)
1723                 return ret;
1724
1725         ret = i915_forcewake_create(minor->debugfs_root, minor);
1726         if (ret)
1727                 return ret;
1728         ret = i915_max_freq_create(minor->debugfs_root, minor);
1729         if (ret)
1730                 return ret;
1731         ret = i915_cache_sharing_create(minor->debugfs_root, minor);
1732         if (ret)
1733                 return ret;
1734
1735         return drm_debugfs_create_files(i915_debugfs_list,
1736                                         I915_DEBUGFS_ENTRIES,
1737                                         minor->debugfs_root, minor);
1738 }
1739
1740 void i915_debugfs_cleanup(struct drm_minor *minor)
1741 {
1742         drm_debugfs_remove_files(i915_debugfs_list,
1743                                  I915_DEBUGFS_ENTRIES, minor);
1744         drm_debugfs_remove_files((struct drm_info_list *) &i915_forcewake_fops,
1745                                  1, minor);
1746         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
1747                                  1, minor);
1748         drm_debugfs_remove_files((struct drm_info_list *) &i915_max_freq_fops,
1749                                  1, minor);
1750         drm_debugfs_remove_files((struct drm_info_list *) &i915_cache_sharing_fops,
1751                                  1, minor);
1752 }
1753
1754 #endif /* CONFIG_DEBUG_FS */