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 <linux/list_sort.h>
  34 #include <asm/msr-index.h>
  35 #include <drm/drmP.h>
  36 #include "intel_drv.h"
  37 #include "intel_ringbuffer.h"
  38 #include <drm/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         INACTIVE_LIST,
  49         PINNED_LIST,
  50 };
  51
  52 static const char *yesno(int v)
  53 {
  54         return v ? "yes" : "no";
  55 }
  56
  57 static int i915_capabilities(struct seq_file *m, void *data)
  58 {
  59         struct drm_info_node *node = (struct drm_info_node *) m->private;
  60         struct drm_device *dev = node->minor->dev;
  61         const struct intel_device_info *info = INTEL_INFO(dev);
  62
  63         seq_printf(m, "gen: %d\n", info->gen);
  64         seq_printf(m, "pch: %d\n", INTEL_PCH_TYPE(dev));
  65 #define PRINT_FLAG(x)  seq_printf(m, #x ": %s\n", yesno(info->x))
  66 #define SEP_SEMICOLON ;
  67         DEV_INFO_FOR_EACH_FLAG(PRINT_FLAG, SEP_SEMICOLON);
  68 #undef PRINT_FLAG
  69 #undef SEP_SEMICOLON
  70
  71         return 0;
  72 }
  73
  74 static const char *get_pin_flag(struct drm_i915_gem_object *obj)
  75 {
  76         if (obj->user_pin_count > 0)
  77                 return "P";
  78         else if (obj->pin_count > 0)
  79                 return "p";
  80         else
  81                 return " ";
  82 }
  83
  84 static const char *get_tiling_flag(struct drm_i915_gem_object *obj)
  85 {
  86         switch (obj->tiling_mode) {
  87         default:
  88         case I915_TILING_NONE: return " ";
  89         case I915_TILING_X: return "X";
  90         case I915_TILING_Y: return "Y";
  91         }
  92 }
  93
  94 static inline const char *get_global_flag(struct drm_i915_gem_object *obj)
  95 {
  96         return obj->has_global_gtt_mapping ? "g" : " ";
  97 }
  98
  99 static void
 100 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 101 {
 102         struct i915_vma *vma;
 103         seq_printf(m, "%pK: %s%s%s %8zdKiB %02x %02x %u %u %u%s%s%s",
 104                    &obj->base,
 105                    get_pin_flag(obj),
 106                    get_tiling_flag(obj),
 107                    get_global_flag(obj),
 108                    obj->base.size / 1024,
 109                    obj->base.read_domains,
 110                    obj->base.write_domain,
 111                    obj->last_read_seqno,
 112                    obj->last_write_seqno,
 113                    obj->last_fenced_seqno,
 114                    i915_cache_level_str(obj->cache_level),
 115                    obj->dirty ? " dirty" : "",
 116                    obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
 117         if (obj->base.name)
 118                 seq_printf(m, " (name: %d)", obj->base.name);
 119         if (obj->pin_count)
 120                 seq_printf(m, " (pinned x %d)", obj->pin_count);
 121         if (obj->pin_display)
 122                 seq_printf(m, " (display)");
 123         if (obj->fence_reg != I915_FENCE_REG_NONE)
 124                 seq_printf(m, " (fence: %d)", obj->fence_reg);
 125         list_for_each_entry(vma, &obj->vma_list, vma_link) {
 126                 if (!i915_is_ggtt(vma->vm))
 127                         seq_puts(m, " (pp");
 128                 else
 129                         seq_puts(m, " (g");
 130                 seq_printf(m, "gtt offset: %08lx, size: %08lx)",
 131                            vma->node.start, vma->node.size);
 132         }
 133         if (obj->stolen)
 134                 seq_printf(m, " (stolen: %08lx)", obj->stolen->start);
 135         if (obj->pin_mappable || obj->fault_mappable) {
 136                 char s[3], *t = s;
 137                 if (obj->pin_mappable)
 138                         *t++ = 'p';
 139                 if (obj->fault_mappable)
 140                         *t++ = 'f';
 141                 *t = '\0';
 142                 seq_printf(m, " (%s mappable)", s);
 143         }
 144         if (obj->ring != NULL)
 145                 seq_printf(m, " (%s)", obj->ring->name);
 146 }
 147
 148 static int i915_gem_object_list_info(struct seq_file *m, void *data)
 149 {
 150         struct drm_info_node *node = (struct drm_info_node *) m->private;
 151         uintptr_t list = (uintptr_t) node->info_ent->data;
 152         struct list_head *head;
 153         struct drm_device *dev = node->minor->dev;
 154         struct drm_i915_private *dev_priv = dev->dev_private;
 155         struct i915_address_space *vm = &dev_priv->gtt.base;
 156         struct i915_vma *vma;
 157         size_t total_obj_size, total_gtt_size;
 158         int count, ret;
 159
 160         ret = mutex_lock_interruptible(&dev->struct_mutex);
 161         if (ret)
 162                 return ret;
 163
 164         /* FIXME: the user of this interface might want more than just GGTT */
 165         switch (list) {
 166         case ACTIVE_LIST:
 167                 seq_puts(m, "Active:\n");
 168                 head = &vm->active_list;
 169                 break;
 170         case INACTIVE_LIST:
 171                 seq_puts(m, "Inactive:\n");
 172                 head = &vm->inactive_list;
 173                 break;
 174         default:
 175                 mutex_unlock(&dev->struct_mutex);
 176                 return -EINVAL;
 177         }
 178
 179         total_obj_size = total_gtt_size = count = 0;
 180         list_for_each_entry(vma, head, mm_list) {
 181                 seq_printf(m, "   ");
 182                 describe_obj(m, vma->obj);
 183                 seq_printf(m, "\n");
 184                 total_obj_size += vma->obj->base.size;
 185                 total_gtt_size += vma->node.size;
 186                 count++;
 187         }
 188         mutex_unlock(&dev->struct_mutex);
 189
 190         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 191                    count, total_obj_size, total_gtt_size);
 192         return 0;
 193 }
 194
 195 static int obj_rank_by_stolen(void *priv,
 196                               struct list_head *A, struct list_head *B)
 197 {
 198         struct drm_i915_gem_object *a =
 199                 container_of(A, struct drm_i915_gem_object, obj_exec_link);
 200         struct drm_i915_gem_object *b =
 201                 container_of(B, struct drm_i915_gem_object, obj_exec_link);
 202
 203         return a->stolen->start - b->stolen->start;
 204 }
 205
 206 static int i915_gem_stolen_list_info(struct seq_file *m, void *data)
 207 {
 208         struct drm_info_node *node = (struct drm_info_node *) m->private;
 209         struct drm_device *dev = node->minor->dev;
 210         struct drm_i915_private *dev_priv = dev->dev_private;
 211         struct drm_i915_gem_object *obj;
 212         size_t total_obj_size, total_gtt_size;
 213         LIST_HEAD(stolen);
 214         int count, ret;
 215
 216         ret = mutex_lock_interruptible(&dev->struct_mutex);
 217         if (ret)
 218                 return ret;
 219
 220         total_obj_size = total_gtt_size = count = 0;
 221         list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
 222                 if (obj->stolen == NULL)
 223                         continue;
 224
 225                 list_add(&obj->obj_exec_link, &stolen);
 226
 227                 total_obj_size += obj->base.size;
 228                 total_gtt_size += i915_gem_obj_ggtt_size(obj);
 229                 count++;
 230         }
 231         list_for_each_entry(obj, &dev_priv->mm.unbound_list, global_list) {
 232                 if (obj->stolen == NULL)
 233                         continue;
 234
 235                 list_add(&obj->obj_exec_link, &stolen);
 236
 237                 total_obj_size += obj->base.size;
 238                 count++;
 239         }
 240         list_sort(NULL, &stolen, obj_rank_by_stolen);
 241         seq_puts(m, "Stolen:\n");
 242         while (!list_empty(&stolen)) {
 243                 obj = list_first_entry(&stolen, typeof(*obj), obj_exec_link);
 244                 seq_puts(m, "   ");
 245                 describe_obj(m, obj);
 246                 seq_putc(m, '\n');
 247                 list_del_init(&obj->obj_exec_link);
 248         }
 249         mutex_unlock(&dev->struct_mutex);
 250
 251         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 252                    count, total_obj_size, total_gtt_size);
 253         return 0;
 254 }
 255
 256 #define count_objects(list, member) do { \
 257         list_for_each_entry(obj, list, member) { \
 258                 size += i915_gem_obj_ggtt_size(obj); \
 259                 ++count; \
 260                 if (obj->map_and_fenceable) { \
 261                         mappable_size += i915_gem_obj_ggtt_size(obj); \
 262                         ++mappable_count; \
 263                 } \
 264         } \
 265 } while (0)
 266
 267 struct file_stats {
 268         int count;
 269         size_t total, active, inactive, unbound;
 270 };
 271
 272 static int per_file_stats(int id, void *ptr, void *data)
 273 {
 274         struct drm_i915_gem_object *obj = ptr;
 275         struct file_stats *stats = data;
 276
 277         stats->count++;
 278         stats->total += obj->base.size;
 279
 280         if (i915_gem_obj_ggtt_bound(obj)) {
 281                 if (!list_empty(&obj->ring_list))
 282                         stats->active += obj->base.size;
 283                 else
 284                         stats->inactive += obj->base.size;
 285         } else {
 286                 if (!list_empty(&obj->global_list))
 287                         stats->unbound += obj->base.size;
 288         }
 289
 290         return 0;
 291 }
 292
 293 #define count_vmas(list, member) do { \
 294         list_for_each_entry(vma, list, member) { \
 295                 size += i915_gem_obj_ggtt_size(vma->obj); \
 296                 ++count; \
 297                 if (vma->obj->map_and_fenceable) { \
 298                         mappable_size += i915_gem_obj_ggtt_size(vma->obj); \
 299                         ++mappable_count; \
 300                 } \
 301         } \
 302 } while (0)
 303
 304 static int i915_gem_object_info(struct seq_file *m, void* data)
 305 {
 306         struct drm_info_node *node = (struct drm_info_node *) m->private;
 307         struct drm_device *dev = node->minor->dev;
 308         struct drm_i915_private *dev_priv = dev->dev_private;
 309         u32 count, mappable_count, purgeable_count;
 310         size_t size, mappable_size, purgeable_size;
 311         struct drm_i915_gem_object *obj;
 312         struct i915_address_space *vm = &dev_priv->gtt.base;
 313         struct drm_file *file;
 314         struct i915_vma *vma;
 315         int ret;
 316
 317         ret = mutex_lock_interruptible(&dev->struct_mutex);
 318         if (ret)
 319                 return ret;
 320
 321         seq_printf(m, "%u objects, %zu bytes\n",
 322                    dev_priv->mm.object_count,
 323                    dev_priv->mm.object_memory);
 324
 325         size = count = mappable_size = mappable_count = 0;
 326         count_objects(&dev_priv->mm.bound_list, global_list);
 327         seq_printf(m, "%u [%u] objects, %zu [%zu] bytes in gtt\n",
 328                    count, mappable_count, size, mappable_size);
 329
 330         size = count = mappable_size = mappable_count = 0;
 331         count_vmas(&vm->active_list, mm_list);
 332         seq_printf(m, "  %u [%u] active objects, %zu [%zu] bytes\n",
 333                    count, mappable_count, size, mappable_size);
 334
 335         size = count = mappable_size = mappable_count = 0;
 336         count_vmas(&vm->inactive_list, mm_list);
 337         seq_printf(m, "  %u [%u] inactive objects, %zu [%zu] bytes\n",
 338                    count, mappable_count, size, mappable_size);
 339
 340         size = count = purgeable_size = purgeable_count = 0;
 341         list_for_each_entry(obj, &dev_priv->mm.unbound_list, global_list) {
 342                 size += obj->base.size, ++count;
 343                 if (obj->madv == I915_MADV_DONTNEED)
 344                         purgeable_size += obj->base.size, ++purgeable_count;
 345         }
 346         seq_printf(m, "%u unbound objects, %zu bytes\n", count, size);
 347
 348         size = count = mappable_size = mappable_count = 0;
 349         list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
 350                 if (obj->fault_mappable) {
 351                         size += i915_gem_obj_ggtt_size(obj);
 352                         ++count;
 353                 }
 354                 if (obj->pin_mappable) {
 355                         mappable_size += i915_gem_obj_ggtt_size(obj);
 356                         ++mappable_count;
 357                 }
 358                 if (obj->madv == I915_MADV_DONTNEED) {
 359                         purgeable_size += obj->base.size;
 360                         ++purgeable_count;
 361                 }
 362         }
 363         seq_printf(m, "%u purgeable objects, %zu bytes\n",
 364                    purgeable_count, purgeable_size);
 365         seq_printf(m, "%u pinned mappable objects, %zu bytes\n",
 366                    mappable_count, mappable_size);
 367         seq_printf(m, "%u fault mappable objects, %zu bytes\n",
 368                    count, size);
 369
 370         seq_printf(m, "%zu [%lu] gtt total\n",
 371                    dev_priv->gtt.base.total,
 372                    dev_priv->gtt.mappable_end - dev_priv->gtt.base.start);
 373
 374         seq_putc(m, '\n');
 375         list_for_each_entry_reverse(file, &dev->filelist, lhead) {
 376                 struct file_stats stats;
 377
 378                 memset(&stats, 0, sizeof(stats));
 379                 idr_for_each(&file->object_idr, per_file_stats, &stats);
 380                 seq_printf(m, "%s: %u objects, %zu bytes (%zu active, %zu inactive, %zu unbound)\n",
 381                            get_pid_task(file->pid, PIDTYPE_PID)->comm,
 382                            stats.count,
 383                            stats.total,
 384                            stats.active,
 385                            stats.inactive,
 386                            stats.unbound);
 387         }
 388
 389         mutex_unlock(&dev->struct_mutex);
 390
 391         return 0;
 392 }
 393
 394 static int i915_gem_gtt_info(struct seq_file *m, void *data)
 395 {
 396         struct drm_info_node *node = (struct drm_info_node *) m->private;
 397         struct drm_device *dev = node->minor->dev;
 398         uintptr_t list = (uintptr_t) node->info_ent->data;
 399         struct drm_i915_private *dev_priv = dev->dev_private;
 400         struct drm_i915_gem_object *obj;
 401         size_t total_obj_size, total_gtt_size;
 402         int count, ret;
 403
 404         ret = mutex_lock_interruptible(&dev->struct_mutex);
 405         if (ret)
 406                 return ret;
 407
 408         total_obj_size = total_gtt_size = count = 0;
 409         list_for_each_entry(obj, &dev_priv->mm.bound_list, global_list) {
 410                 if (list == PINNED_LIST && obj->pin_count == 0)
 411                         continue;
 412
 413                 seq_puts(m, "   ");
 414                 describe_obj(m, obj);
 415                 seq_putc(m, '\n');
 416                 total_obj_size += obj->base.size;
 417                 total_gtt_size += i915_gem_obj_ggtt_size(obj);
 418                 count++;
 419         }
 420
 421         mutex_unlock(&dev->struct_mutex);
 422
 423         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 424                    count, total_obj_size, total_gtt_size);
 425
 426         return 0;
 427 }
 428
 429 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
 430 {
 431         struct drm_info_node *node = (struct drm_info_node *) m->private;
 432         struct drm_device *dev = node->minor->dev;
 433         unsigned long flags;
 434         struct intel_crtc *crtc;
 435
 436         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
 437                 const char pipe = pipe_name(crtc->pipe);
 438                 const char plane = plane_name(crtc->plane);
 439                 struct intel_unpin_work *work;
 440
 441                 spin_lock_irqsave(&dev->event_lock, flags);
 442                 work = crtc->unpin_work;
 443                 if (work == NULL) {
 444                         seq_printf(m, "No flip due on pipe %c (plane %c)\n",
 445                                    pipe, plane);
 446                 } else {
 447                         if (atomic_read(&work->pending) < INTEL_FLIP_COMPLETE) {
 448                                 seq_printf(m, "Flip queued on pipe %c (plane %c)\n",
 449                                            pipe, plane);
 450                         } else {
 451                                 seq_printf(m, "Flip pending (waiting for vsync) on pipe %c (plane %c)\n",
 452                                            pipe, plane);
 453                         }
 454                         if (work->enable_stall_check)
 455                                 seq_puts(m, "Stall check enabled, ");
 456                         else
 457                                 seq_puts(m, "Stall check waiting for page flip ioctl, ");
 458                         seq_printf(m, "%d prepares\n", atomic_read(&work->pending));
 459
 460                         if (work->old_fb_obj) {
 461                                 struct drm_i915_gem_object *obj = work->old_fb_obj;
 462                                 if (obj)
 463                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08lx\n",
 464                                                    i915_gem_obj_ggtt_offset(obj));
 465                         }
 466                         if (work->pending_flip_obj) {
 467                                 struct drm_i915_gem_object *obj = work->pending_flip_obj;
 468                                 if (obj)
 469                                         seq_printf(m, "New framebuffer gtt_offset 0x%08lx\n",
 470                                                    i915_gem_obj_ggtt_offset(obj));
 471                         }
 472                 }
 473                 spin_unlock_irqrestore(&dev->event_lock, flags);
 474         }
 475
 476         return 0;
 477 }
 478
 479 static int i915_gem_request_info(struct seq_file *m, void *data)
 480 {
 481         struct drm_info_node *node = (struct drm_info_node *) m->private;
 482         struct drm_device *dev = node->minor->dev;
 483         drm_i915_private_t *dev_priv = dev->dev_private;
 484         struct intel_ring_buffer *ring;
 485         struct drm_i915_gem_request *gem_request;
 486         int ret, count, i;
 487
 488         ret = mutex_lock_interruptible(&dev->struct_mutex);
 489         if (ret)
 490                 return ret;
 491
 492         count = 0;
 493         for_each_ring(ring, dev_priv, i) {
 494                 if (list_empty(&ring->request_list))
 495                         continue;
 496
 497                 seq_printf(m, "%s requests:\n", ring->name);
 498                 list_for_each_entry(gem_request,
 499                                     &ring->request_list,
 500                                     list) {
 501                         seq_printf(m, "    %d @ %d\n",
 502                                    gem_request->seqno,
 503                                    (int) (jiffies - gem_request->emitted_jiffies));
 504                 }
 505                 count++;
 506         }
 507         mutex_unlock(&dev->struct_mutex);
 508
 509         if (count == 0)
 510                 seq_puts(m, "No requests\n");
 511
 512         return 0;
 513 }
 514
 515 static void i915_ring_seqno_info(struct seq_file *m,
 516                                  struct intel_ring_buffer *ring)
 517 {
 518         if (ring->get_seqno) {
 519                 seq_printf(m, "Current sequence (%s): %u\n",
 520                            ring->name, ring->get_seqno(ring, false));
 521         }
 522 }
 523
 524 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 525 {
 526         struct drm_info_node *node = (struct drm_info_node *) m->private;
 527         struct drm_device *dev = node->minor->dev;
 528         drm_i915_private_t *dev_priv = dev->dev_private;
 529         struct intel_ring_buffer *ring;
 530         int ret, i;
 531
 532         ret = mutex_lock_interruptible(&dev->struct_mutex);
 533         if (ret)
 534                 return ret;
 535
 536         for_each_ring(ring, dev_priv, i)
 537                 i915_ring_seqno_info(m, ring);
 538
 539         mutex_unlock(&dev->struct_mutex);
 540
 541         return 0;
 542 }
 543
 544
 545 static int i915_interrupt_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         int ret, i, pipe;
 552
 553         ret = mutex_lock_interruptible(&dev->struct_mutex);
 554         if (ret)
 555                 return ret;
 556
 557         if (IS_VALLEYVIEW(dev)) {
 558                 seq_printf(m, "Display IER:\t%08x\n",
 559                            I915_READ(VLV_IER));
 560                 seq_printf(m, "Display IIR:\t%08x\n",
 561                            I915_READ(VLV_IIR));
 562                 seq_printf(m, "Display IIR_RW:\t%08x\n",
 563                            I915_READ(VLV_IIR_RW));
 564                 seq_printf(m, "Display IMR:\t%08x\n",
 565                            I915_READ(VLV_IMR));
 566                 for_each_pipe(pipe)
 567                         seq_printf(m, "Pipe %c stat:\t%08x\n",
 568                                    pipe_name(pipe),
 569                                    I915_READ(PIPESTAT(pipe)));
 570
 571                 seq_printf(m, "Master IER:\t%08x\n",
 572                            I915_READ(VLV_MASTER_IER));
 573
 574                 seq_printf(m, "Render IER:\t%08x\n",
 575                            I915_READ(GTIER));
 576                 seq_printf(m, "Render IIR:\t%08x\n",
 577                            I915_READ(GTIIR));
 578                 seq_printf(m, "Render IMR:\t%08x\n",
 579                            I915_READ(GTIMR));
 580
 581                 seq_printf(m, "PM IER:\t\t%08x\n",
 582                            I915_READ(GEN6_PMIER));
 583                 seq_printf(m, "PM IIR:\t\t%08x\n",
 584                            I915_READ(GEN6_PMIIR));
 585                 seq_printf(m, "PM IMR:\t\t%08x\n",
 586                            I915_READ(GEN6_PMIMR));
 587
 588                 seq_printf(m, "Port hotplug:\t%08x\n",
 589                            I915_READ(PORT_HOTPLUG_EN));
 590                 seq_printf(m, "DPFLIPSTAT:\t%08x\n",
 591                            I915_READ(VLV_DPFLIPSTAT));
 592                 seq_printf(m, "DPINVGTT:\t%08x\n",
 593                            I915_READ(DPINVGTT));
 594
 595         } else if (!HAS_PCH_SPLIT(dev)) {
 596                 seq_printf(m, "Interrupt enable:    %08x\n",
 597                            I915_READ(IER));
 598                 seq_printf(m, "Interrupt identity:  %08x\n",
 599                            I915_READ(IIR));
 600                 seq_printf(m, "Interrupt mask:      %08x\n",
 601                            I915_READ(IMR));
 602                 for_each_pipe(pipe)
 603                         seq_printf(m, "Pipe %c stat:         %08x\n",
 604                                    pipe_name(pipe),
 605                                    I915_READ(PIPESTAT(pipe)));
 606         } else {
 607                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
 608                            I915_READ(DEIER));
 609                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
 610                            I915_READ(DEIIR));
 611                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
 612                            I915_READ(DEIMR));
 613                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
 614                            I915_READ(SDEIER));
 615                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
 616                            I915_READ(SDEIIR));
 617                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
 618                            I915_READ(SDEIMR));
 619                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
 620                            I915_READ(GTIER));
 621                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
 622                            I915_READ(GTIIR));
 623                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
 624                            I915_READ(GTIMR));
 625         }
 626         seq_printf(m, "Interrupts received: %d\n",
 627                    atomic_read(&dev_priv->irq_received));
 628         for_each_ring(ring, dev_priv, i) {
 629                 if (IS_GEN6(dev) || IS_GEN7(dev)) {
 630                         seq_printf(m,
 631                                    "Graphics Interrupt mask (%s):       %08x\n",
 632                                    ring->name, I915_READ_IMR(ring));
 633                 }
 634                 i915_ring_seqno_info(m, ring);
 635         }
 636         mutex_unlock(&dev->struct_mutex);
 637
 638         return 0;
 639 }
 640
 641 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 642 {
 643         struct drm_info_node *node = (struct drm_info_node *) m->private;
 644         struct drm_device *dev = node->minor->dev;
 645         drm_i915_private_t *dev_priv = dev->dev_private;
 646         int i, ret;
 647
 648         ret = mutex_lock_interruptible(&dev->struct_mutex);
 649         if (ret)
 650                 return ret;
 651
 652         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 653         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 654         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 655                 struct drm_i915_gem_object *obj = dev_priv->fence_regs[i].obj;
 656
 657                 seq_printf(m, "Fence %d, pin count = %d, object = ",
 658                            i, dev_priv->fence_regs[i].pin_count);
 659                 if (obj == NULL)
 660                         seq_puts(m, "unused");
 661                 else
 662                         describe_obj(m, obj);
 663                 seq_putc(m, '\n');
 664         }
 665
 666         mutex_unlock(&dev->struct_mutex);
 667         return 0;
 668 }
 669
 670 static int i915_hws_info(struct seq_file *m, void *data)
 671 {
 672         struct drm_info_node *node = (struct drm_info_node *) m->private;
 673         struct drm_device *dev = node->minor->dev;
 674         drm_i915_private_t *dev_priv = dev->dev_private;
 675         struct intel_ring_buffer *ring;
 676         const u32 *hws;
 677         int i;
 678
 679         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 680         hws = ring->status_page.page_addr;
 681         if (hws == NULL)
 682                 return 0;
 683
 684         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 685                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 686                            i * 4,
 687                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 688         }
 689         return 0;
 690 }
 691
 692 static ssize_t
 693 i915_error_state_write(struct file *filp,
 694                        const char __user *ubuf,
 695                        size_t cnt,
 696                        loff_t *ppos)
 697 {
 698         struct i915_error_state_file_priv *error_priv = filp->private_data;
 699         struct drm_device *dev = error_priv->dev;
 700         int ret;
 701
 702         DRM_DEBUG_DRIVER("Resetting error state\n");
 703
 704         ret = mutex_lock_interruptible(&dev->struct_mutex);
 705         if (ret)
 706                 return ret;
 707
 708         i915_destroy_error_state(dev);
 709         mutex_unlock(&dev->struct_mutex);
 710
 711         return cnt;
 712 }
 713
 714 static int i915_error_state_open(struct inode *inode, struct file *file)
 715 {
 716         struct drm_device *dev = inode->i_private;
 717         struct i915_error_state_file_priv *error_priv;
 718
 719         error_priv = kzalloc(sizeof(*error_priv), GFP_KERNEL);
 720         if (!error_priv)
 721                 return -ENOMEM;
 722
 723         error_priv->dev = dev;
 724
 725         i915_error_state_get(dev, error_priv);
 726
 727         file->private_data = error_priv;
 728
 729         return 0;
 730 }
 731
 732 static int i915_error_state_release(struct inode *inode, struct file *file)
 733 {
 734         struct i915_error_state_file_priv *error_priv = file->private_data;
 735
 736         i915_error_state_put(error_priv);
 737         kfree(error_priv);
 738
 739         return 0;
 740 }
 741
 742 static ssize_t i915_error_state_read(struct file *file, char __user *userbuf,
 743                                      size_t count, loff_t *pos)
 744 {
 745         struct i915_error_state_file_priv *error_priv = file->private_data;
 746         struct drm_i915_error_state_buf error_str;
 747         loff_t tmp_pos = 0;
 748         ssize_t ret_count = 0;
 749         int ret;
 750
 751         ret = i915_error_state_buf_init(&error_str, count, *pos);
 752         if (ret)
 753                 return ret;
 754
 755         ret = i915_error_state_to_str(&error_str, error_priv);
 756         if (ret)
 757                 goto out;
 758
 759         ret_count = simple_read_from_buffer(userbuf, count, &tmp_pos,
 760                                             error_str.buf,
 761                                             error_str.bytes);
 762
 763         if (ret_count < 0)
 764                 ret = ret_count;
 765         else
 766                 *pos = error_str.start + ret_count;
 767 out:
 768         i915_error_state_buf_release(&error_str);
 769         return ret ?: ret_count;
 770 }
 771
 772 static const struct file_operations i915_error_state_fops = {
 773         .owner = THIS_MODULE,
 774         .open = i915_error_state_open,
 775         .read = i915_error_state_read,
 776         .write = i915_error_state_write,
 777         .llseek = default_llseek,
 778         .release = i915_error_state_release,
 779 };
 780
 781 static int
 782 i915_next_seqno_get(void *data, u64 *val)
 783 {
 784         struct drm_device *dev = data;
 785         drm_i915_private_t *dev_priv = dev->dev_private;
 786         int ret;
 787
 788         ret = mutex_lock_interruptible(&dev->struct_mutex);
 789         if (ret)
 790                 return ret;
 791
 792         *val = dev_priv->next_seqno;
 793         mutex_unlock(&dev->struct_mutex);
 794
 795         return 0;
 796 }
 797
 798 static int
 799 i915_next_seqno_set(void *data, u64 val)
 800 {
 801         struct drm_device *dev = data;
 802         int ret;
 803
 804         ret = mutex_lock_interruptible(&dev->struct_mutex);
 805         if (ret)
 806                 return ret;
 807
 808         ret = i915_gem_set_seqno(dev, val);
 809         mutex_unlock(&dev->struct_mutex);
 810
 811         return ret;
 812 }
 813
 814 DEFINE_SIMPLE_ATTRIBUTE(i915_next_seqno_fops,
 815                         i915_next_seqno_get, i915_next_seqno_set,
 816                         "0x%llx\n");
 817
 818 static int i915_rstdby_delays(struct seq_file *m, void *unused)
 819 {
 820         struct drm_info_node *node = (struct drm_info_node *) m->private;
 821         struct drm_device *dev = node->minor->dev;
 822         drm_i915_private_t *dev_priv = dev->dev_private;
 823         u16 crstanddelay;
 824         int ret;
 825
 826         ret = mutex_lock_interruptible(&dev->struct_mutex);
 827         if (ret)
 828                 return ret;
 829
 830         crstanddelay = I915_READ16(CRSTANDVID);
 831
 832         mutex_unlock(&dev->struct_mutex);
 833
 834         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
 835
 836         return 0;
 837 }
 838
 839 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
 840 {
 841         struct drm_info_node *node = (struct drm_info_node *) m->private;
 842         struct drm_device *dev = node->minor->dev;
 843         drm_i915_private_t *dev_priv = dev->dev_private;
 844         int ret;
 845
 846         if (IS_GEN5(dev)) {
 847                 u16 rgvswctl = I915_READ16(MEMSWCTL);
 848                 u16 rgvstat = I915_READ16(MEMSTAT_ILK);
 849
 850                 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 851                 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
 852                 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 853                            MEMSTAT_VID_SHIFT);
 854                 seq_printf(m, "Current P-state: %d\n",
 855                            (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
 856         } else if ((IS_GEN6(dev) || IS_GEN7(dev)) && !IS_VALLEYVIEW(dev)) {
 857                 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
 858                 u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
 859                 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
 860                 u32 rpstat, cagf;
 861                 u32 rpupei, rpcurup, rpprevup;
 862                 u32 rpdownei, rpcurdown, rpprevdown;
 863                 int max_freq;
 864
 865                 /* RPSTAT1 is in the GT power well */
 866                 ret = mutex_lock_interruptible(&dev->struct_mutex);
 867                 if (ret)
 868                         return ret;
 869
 870                 gen6_gt_force_wake_get(dev_priv);
 871
 872                 rpstat = I915_READ(GEN6_RPSTAT1);
 873                 rpupei = I915_READ(GEN6_RP_CUR_UP_EI);
 874                 rpcurup = I915_READ(GEN6_RP_CUR_UP);
 875                 rpprevup = I915_READ(GEN6_RP_PREV_UP);
 876                 rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI);
 877                 rpcurdown = I915_READ(GEN6_RP_CUR_DOWN);
 878                 rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
 879                 if (IS_HASWELL(dev))
 880                         cagf = (rpstat & HSW_CAGF_MASK) >> HSW_CAGF_SHIFT;
 881                 else
 882                         cagf = (rpstat & GEN6_CAGF_MASK) >> GEN6_CAGF_SHIFT;
 883                 cagf *= GT_FREQUENCY_MULTIPLIER;
 884
 885                 gen6_gt_force_wake_put(dev_priv);
 886                 mutex_unlock(&dev->struct_mutex);
 887
 888                 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
 889                 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
 890                 seq_printf(m, "Render p-state ratio: %d\n",
 891                            (gt_perf_status & 0xff00) >> 8);
 892                 seq_printf(m, "Render p-state VID: %d\n",
 893                            gt_perf_status & 0xff);
 894                 seq_printf(m, "Render p-state limit: %d\n",
 895                            rp_state_limits & 0xff);
 896                 seq_printf(m, "CAGF: %dMHz\n", cagf);
 897                 seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
 898                            GEN6_CURICONT_MASK);
 899                 seq_printf(m, "RP CUR UP: %dus\n", rpcurup &
 900                            GEN6_CURBSYTAVG_MASK);
 901                 seq_printf(m, "RP PREV UP: %dus\n", rpprevup &
 902                            GEN6_CURBSYTAVG_MASK);
 903                 seq_printf(m, "RP CUR DOWN EI: %dus\n", rpdownei &
 904                            GEN6_CURIAVG_MASK);
 905                 seq_printf(m, "RP CUR DOWN: %dus\n", rpcurdown &
 906                            GEN6_CURBSYTAVG_MASK);
 907                 seq_printf(m, "RP PREV DOWN: %dus\n", rpprevdown &
 908                            GEN6_CURBSYTAVG_MASK);
 909
 910                 max_freq = (rp_state_cap & 0xff0000) >> 16;
 911                 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
 912                            max_freq * GT_FREQUENCY_MULTIPLIER);
 913
 914                 max_freq = (rp_state_cap & 0xff00) >> 8;
 915                 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
 916                            max_freq * GT_FREQUENCY_MULTIPLIER);
 917
 918                 max_freq = rp_state_cap & 0xff;
 919                 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
 920                            max_freq * GT_FREQUENCY_MULTIPLIER);
 921
 922                 seq_printf(m, "Max overclocked frequency: %dMHz\n",
 923                            dev_priv->rps.hw_max * GT_FREQUENCY_MULTIPLIER);
 924         } else if (IS_VALLEYVIEW(dev)) {
 925                 u32 freq_sts, val;
 926
 927                 mutex_lock(&dev_priv->rps.hw_lock);
 928                 freq_sts = vlv_punit_read(dev_priv, PUNIT_REG_GPU_FREQ_STS);
 929                 seq_printf(m, "PUNIT_REG_GPU_FREQ_STS: 0x%08x\n", freq_sts);
 930                 seq_printf(m, "DDR freq: %d MHz\n", dev_priv->mem_freq);
 931
 932                 val = vlv_punit_read(dev_priv, PUNIT_FUSE_BUS1);
 933                 seq_printf(m, "max GPU freq: %d MHz\n",
 934                            vlv_gpu_freq(dev_priv->mem_freq, val));
 935
 936                 val = vlv_punit_read(dev_priv, PUNIT_REG_GPU_LFM);
 937                 seq_printf(m, "min GPU freq: %d MHz\n",
 938                            vlv_gpu_freq(dev_priv->mem_freq, val));
 939
 940                 seq_printf(m, "current GPU freq: %d MHz\n",
 941                            vlv_gpu_freq(dev_priv->mem_freq,
 942                                         (freq_sts >> 8) & 0xff));
 943                 mutex_unlock(&dev_priv->rps.hw_lock);
 944         } else {
 945                 seq_puts(m, "no P-state info available\n");
 946         }
 947
 948         return 0;
 949 }
 950
 951 static int i915_delayfreq_table(struct seq_file *m, void *unused)
 952 {
 953         struct drm_info_node *node = (struct drm_info_node *) m->private;
 954         struct drm_device *dev = node->minor->dev;
 955         drm_i915_private_t *dev_priv = dev->dev_private;
 956         u32 delayfreq;
 957         int ret, i;
 958
 959         ret = mutex_lock_interruptible(&dev->struct_mutex);
 960         if (ret)
 961                 return ret;
 962
 963         for (i = 0; i < 16; i++) {
 964                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
 965                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
 966                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
 967         }
 968
 969         mutex_unlock(&dev->struct_mutex);
 970
 971         return 0;
 972 }
 973
 974 static inline int MAP_TO_MV(int map)
 975 {
 976         return 1250 - (map * 25);
 977 }
 978
 979 static int i915_inttoext_table(struct seq_file *m, void *unused)
 980 {
 981         struct drm_info_node *node = (struct drm_info_node *) m->private;
 982         struct drm_device *dev = node->minor->dev;
 983         drm_i915_private_t *dev_priv = dev->dev_private;
 984         u32 inttoext;
 985         int ret, i;
 986
 987         ret = mutex_lock_interruptible(&dev->struct_mutex);
 988         if (ret)
 989                 return ret;
 990
 991         for (i = 1; i <= 32; i++) {
 992                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
 993                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
 994         }
 995
 996         mutex_unlock(&dev->struct_mutex);
 997
 998         return 0;
 999 }
1000
1001 static int ironlake_drpc_info(struct seq_file *m)
1002 {
1003         struct drm_info_node *node = (struct drm_info_node *) m->private;
1004         struct drm_device *dev = node->minor->dev;
1005         drm_i915_private_t *dev_priv = dev->dev_private;
1006         u32 rgvmodectl, rstdbyctl;
1007         u16 crstandvid;
1008         int ret;
1009
1010         ret = mutex_lock_interruptible(&dev->struct_mutex);
1011         if (ret)
1012                 return ret;
1013
1014         rgvmodectl = I915_READ(MEMMODECTL);
1015         rstdbyctl = I915_READ(RSTDBYCTL);
1016         crstandvid = I915_READ16(CRSTANDVID);
1017
1018         mutex_unlock(&dev->struct_mutex);
1019
1020         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
1021                    "yes" : "no");
1022         seq_printf(m, "Boost freq: %d\n",
1023                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
1024                    MEMMODE_BOOST_FREQ_SHIFT);
1025         seq_printf(m, "HW control enabled: %s\n",
1026                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
1027         seq_printf(m, "SW control enabled: %s\n",
1028                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
1029         seq_printf(m, "Gated voltage change: %s\n",
1030                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
1031         seq_printf(m, "Starting frequency: P%d\n",
1032                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
1033         seq_printf(m, "Max P-state: P%d\n",
1034                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
1035         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
1036         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
1037         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
1038         seq_printf(m, "Render standby enabled: %s\n",
1039                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
1040         seq_puts(m, "Current RS state: ");
1041         switch (rstdbyctl & RSX_STATUS_MASK) {
1042         case RSX_STATUS_ON:
1043                 seq_puts(m, "on\n");
1044                 break;
1045         case RSX_STATUS_RC1:
1046                 seq_puts(m, "RC1\n");
1047                 break;
1048         case RSX_STATUS_RC1E:
1049                 seq_puts(m, "RC1E\n");
1050                 break;
1051         case RSX_STATUS_RS1:
1052                 seq_puts(m, "RS1\n");
1053                 break;
1054         case RSX_STATUS_RS2:
1055                 seq_puts(m, "RS2 (RC6)\n");
1056                 break;
1057         case RSX_STATUS_RS3:
1058                 seq_puts(m, "RC3 (RC6+)\n");
1059                 break;
1060         default:
1061                 seq_puts(m, "unknown\n");
1062                 break;
1063         }
1064
1065         return 0;
1066 }
1067
1068 static int gen6_drpc_info(struct seq_file *m)
1069 {
1070
1071         struct drm_info_node *node = (struct drm_info_node *) m->private;
1072         struct drm_device *dev = node->minor->dev;
1073         struct drm_i915_private *dev_priv = dev->dev_private;
1074         u32 rpmodectl1, gt_core_status, rcctl1, rc6vids = 0;
1075         unsigned forcewake_count;
1076         int count = 0, ret;
1077
1078         ret = mutex_lock_interruptible(&dev->struct_mutex);
1079         if (ret)
1080                 return ret;
1081
1082         spin_lock_irq(&dev_priv->uncore.lock);
1083         forcewake_count = dev_priv->uncore.forcewake_count;
1084         spin_unlock_irq(&dev_priv->uncore.lock);
1085
1086         if (forcewake_count) {
1087                 seq_puts(m, "RC information inaccurate because somebody "
1088                             "holds a forcewake reference \n");
1089         } else {
1090                 /* NB: we cannot use forcewake, else we read the wrong values */
1091                 while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK) & 1))
1092                         udelay(10);
1093                 seq_printf(m, "RC information accurate: %s\n", yesno(count < 51));
1094         }
1095
1096         gt_core_status = readl(dev_priv->regs + GEN6_GT_CORE_STATUS);
1097         trace_i915_reg_rw(false, GEN6_GT_CORE_STATUS, gt_core_status, 4, true);
1098
1099         rpmodectl1 = I915_READ(GEN6_RP_CONTROL);
1100         rcctl1 = I915_READ(GEN6_RC_CONTROL);
1101         mutex_unlock(&dev->struct_mutex);
1102         mutex_lock(&dev_priv->rps.hw_lock);
1103         sandybridge_pcode_read(dev_priv, GEN6_PCODE_READ_RC6VIDS, &rc6vids);
1104         mutex_unlock(&dev_priv->rps.hw_lock);
1105
1106         seq_printf(m, "Video Turbo Mode: %s\n",
1107                    yesno(rpmodectl1 & GEN6_RP_MEDIA_TURBO));
1108         seq_printf(m, "HW control enabled: %s\n",
1109                    yesno(rpmodectl1 & GEN6_RP_ENABLE));
1110         seq_printf(m, "SW control enabled: %s\n",
1111                    yesno((rpmodectl1 & GEN6_RP_MEDIA_MODE_MASK) ==
1112                           GEN6_RP_MEDIA_SW_MODE));
1113         seq_printf(m, "RC1e Enabled: %s\n",
1114                    yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
1115         seq_printf(m, "RC6 Enabled: %s\n",
1116                    yesno(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
1117         seq_printf(m, "Deep RC6 Enabled: %s\n",
1118                    yesno(rcctl1 & GEN6_RC_CTL_RC6p_ENABLE));
1119         seq_printf(m, "Deepest RC6 Enabled: %s\n",
1120                    yesno(rcctl1 & GEN6_RC_CTL_RC6pp_ENABLE));
1121         seq_puts(m, "Current RC state: ");
1122         switch (gt_core_status & GEN6_RCn_MASK) {
1123         case GEN6_RC0:
1124                 if (gt_core_status & GEN6_CORE_CPD_STATE_MASK)
1125                         seq_puts(m, "Core Power Down\n");
1126                 else
1127                         seq_puts(m, "on\n");
1128                 break;
1129         case GEN6_RC3:
1130                 seq_puts(m, "RC3\n");
1131                 break;
1132         case GEN6_RC6:
1133                 seq_puts(m, "RC6\n");
1134                 break;
1135         case GEN6_RC7:
1136                 seq_puts(m, "RC7\n");
1137                 break;
1138         default:
1139                 seq_puts(m, "Unknown\n");
1140                 break;
1141         }
1142
1143         seq_printf(m, "Core Power Down: %s\n",
1144                    yesno(gt_core_status & GEN6_CORE_CPD_STATE_MASK));
1145
1146         /* Not exactly sure what this is */
1147         seq_printf(m, "RC6 \"Locked to RPn\" residency since boot: %u\n",
1148                    I915_READ(GEN6_GT_GFX_RC6_LOCKED));
1149         seq_printf(m, "RC6 residency since boot: %u\n",
1150                    I915_READ(GEN6_GT_GFX_RC6));
1151         seq_printf(m, "RC6+ residency since boot: %u\n",
1152                    I915_READ(GEN6_GT_GFX_RC6p));
1153         seq_printf(m, "RC6++ residency since boot: %u\n",
1154                    I915_READ(GEN6_GT_GFX_RC6pp));
1155
1156         seq_printf(m, "RC6   voltage: %dmV\n",
1157                    GEN6_DECODE_RC6_VID(((rc6vids >> 0) & 0xff)));
1158         seq_printf(m, "RC6+  voltage: %dmV\n",
1159                    GEN6_DECODE_RC6_VID(((rc6vids >> 8) & 0xff)));
1160         seq_printf(m, "RC6++ voltage: %dmV\n",
1161                    GEN6_DECODE_RC6_VID(((rc6vids >> 16) & 0xff)));
1162         return 0;
1163 }
1164
1165 static int i915_drpc_info(struct seq_file *m, void *unused)
1166 {
1167         struct drm_info_node *node = (struct drm_info_node *) m->private;
1168         struct drm_device *dev = node->minor->dev;
1169
1170         if (IS_GEN6(dev) || IS_GEN7(dev))
1171                 return gen6_drpc_info(m);
1172         else
1173                 return ironlake_drpc_info(m);
1174 }
1175
1176 static int i915_fbc_status(struct seq_file *m, void *unused)
1177 {
1178         struct drm_info_node *node = (struct drm_info_node *) m->private;
1179         struct drm_device *dev = node->minor->dev;
1180         drm_i915_private_t *dev_priv = dev->dev_private;
1181
1182         if (!I915_HAS_FBC(dev)) {
1183                 seq_puts(m, "FBC unsupported on this chipset\n");
1184                 return 0;
1185         }
1186
1187         if (intel_fbc_enabled(dev)) {
1188                 seq_puts(m, "FBC enabled\n");
1189         } else {
1190                 seq_puts(m, "FBC disabled: ");
1191                 switch (dev_priv->fbc.no_fbc_reason) {
1192                 case FBC_OK:
1193                         seq_puts(m, "FBC actived, but currently disabled in hardware");
1194                         break;
1195                 case FBC_UNSUPPORTED:
1196                         seq_puts(m, "unsupported by this chipset");
1197                         break;
1198                 case FBC_NO_OUTPUT:
1199                         seq_puts(m, "no outputs");
1200                         break;
1201                 case FBC_STOLEN_TOO_SMALL:
1202                         seq_puts(m, "not enough stolen memory");
1203                         break;
1204                 case FBC_UNSUPPORTED_MODE:
1205                         seq_puts(m, "mode not supported");
1206                         break;
1207                 case FBC_MODE_TOO_LARGE:
1208                         seq_puts(m, "mode too large");
1209                         break;
1210                 case FBC_BAD_PLANE:
1211                         seq_puts(m, "FBC unsupported on plane");
1212                         break;
1213                 case FBC_NOT_TILED:
1214                         seq_puts(m, "scanout buffer not tiled");
1215                         break;
1216                 case FBC_MULTIPLE_PIPES:
1217                         seq_puts(m, "multiple pipes are enabled");
1218                         break;
1219                 case FBC_MODULE_PARAM:
1220                         seq_puts(m, "disabled per module param (default off)");
1221                         break;
1222                 case FBC_CHIP_DEFAULT:
1223                         seq_puts(m, "disabled per chip default");
1224                         break;
1225                 default:
1226                         seq_puts(m, "unknown reason");
1227                 }
1228                 seq_putc(m, '\n');
1229         }
1230         return 0;
1231 }
1232
1233 static int i915_ips_status(struct seq_file *m, void *unused)
1234 {
1235         struct drm_info_node *node = (struct drm_info_node *) m->private;
1236         struct drm_device *dev = node->minor->dev;
1237         struct drm_i915_private *dev_priv = dev->dev_private;
1238
1239         if (!HAS_IPS(dev)) {
1240                 seq_puts(m, "not supported\n");
1241                 return 0;
1242         }
1243
1244         if (I915_READ(IPS_CTL) & IPS_ENABLE)
1245                 seq_puts(m, "enabled\n");
1246         else
1247                 seq_puts(m, "disabled\n");
1248
1249         return 0;
1250 }
1251
1252 static int i915_sr_status(struct seq_file *m, void *unused)
1253 {
1254         struct drm_info_node *node = (struct drm_info_node *) m->private;
1255         struct drm_device *dev = node->minor->dev;
1256         drm_i915_private_t *dev_priv = dev->dev_private;
1257         bool sr_enabled = false;
1258
1259         if (HAS_PCH_SPLIT(dev))
1260                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1261         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
1262                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1263         else if (IS_I915GM(dev))
1264                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1265         else if (IS_PINEVIEW(dev))
1266                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1267
1268         seq_printf(m, "self-refresh: %s\n",
1269                    sr_enabled ? "enabled" : "disabled");
1270
1271         return 0;
1272 }
1273
1274 static int i915_emon_status(struct seq_file *m, void *unused)
1275 {
1276         struct drm_info_node *node = (struct drm_info_node *) m->private;
1277         struct drm_device *dev = node->minor->dev;
1278         drm_i915_private_t *dev_priv = dev->dev_private;
1279         unsigned long temp, chipset, gfx;
1280         int ret;
1281
1282         if (!IS_GEN5(dev))
1283                 return -ENODEV;
1284
1285         ret = mutex_lock_interruptible(&dev->struct_mutex);
1286         if (ret)
1287                 return ret;
1288
1289         temp = i915_mch_val(dev_priv);
1290         chipset = i915_chipset_val(dev_priv);
1291         gfx = i915_gfx_val(dev_priv);
1292         mutex_unlock(&dev->struct_mutex);
1293
1294         seq_printf(m, "GMCH temp: %ld\n", temp);
1295         seq_printf(m, "Chipset power: %ld\n", chipset);
1296         seq_printf(m, "GFX power: %ld\n", gfx);
1297         seq_printf(m, "Total power: %ld\n", chipset + gfx);
1298
1299         return 0;
1300 }
1301
1302 static int i915_ring_freq_table(struct seq_file *m, void *unused)
1303 {
1304         struct drm_info_node *node = (struct drm_info_node *) m->private;
1305         struct drm_device *dev = node->minor->dev;
1306         drm_i915_private_t *dev_priv = dev->dev_private;
1307         int ret;
1308         int gpu_freq, ia_freq;
1309
1310         if (!(IS_GEN6(dev) || IS_GEN7(dev))) {
1311                 seq_puts(m, "unsupported on this chipset\n");
1312                 return 0;
1313         }
1314
1315         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1316         if (ret)
1317                 return ret;
1318
1319         seq_puts(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\tEffective Ring freq (MHz)\n");
1320
1321         for (gpu_freq = dev_priv->rps.min_delay;
1322              gpu_freq <= dev_priv->rps.max_delay;
1323              gpu_freq++) {
1324                 ia_freq = gpu_freq;
1325                 sandybridge_pcode_read(dev_priv,
1326                                        GEN6_PCODE_READ_MIN_FREQ_TABLE,
1327                                        &ia_freq);
1328                 seq_printf(m, "%d\t\t%d\t\t\t\t%d\n",
1329                            gpu_freq * GT_FREQUENCY_MULTIPLIER,
1330                            ((ia_freq >> 0) & 0xff) * 100,
1331                            ((ia_freq >> 8) & 0xff) * 100);
1332         }
1333
1334         mutex_unlock(&dev_priv->rps.hw_lock);
1335
1336         return 0;
1337 }
1338
1339 static int i915_gfxec(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         int ret;
1345
1346         ret = mutex_lock_interruptible(&dev->struct_mutex);
1347         if (ret)
1348                 return ret;
1349
1350         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
1351
1352         mutex_unlock(&dev->struct_mutex);
1353
1354         return 0;
1355 }
1356
1357 static int i915_opregion(struct seq_file *m, void *unused)
1358 {
1359         struct drm_info_node *node = (struct drm_info_node *) m->private;
1360         struct drm_device *dev = node->minor->dev;
1361         drm_i915_private_t *dev_priv = dev->dev_private;
1362         struct intel_opregion *opregion = &dev_priv->opregion;
1363         void *data = kmalloc(OPREGION_SIZE, GFP_KERNEL);
1364         int ret;
1365
1366         if (data == NULL)
1367                 return -ENOMEM;
1368
1369         ret = mutex_lock_interruptible(&dev->struct_mutex);
1370         if (ret)
1371                 goto out;
1372
1373         if (opregion->header) {
1374                 memcpy_fromio(data, opregion->header, OPREGION_SIZE);
1375                 seq_write(m, data, OPREGION_SIZE);
1376         }
1377
1378         mutex_unlock(&dev->struct_mutex);
1379
1380 out:
1381         kfree(data);
1382         return 0;
1383 }
1384
1385 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
1386 {
1387         struct drm_info_node *node = (struct drm_info_node *) m->private;
1388         struct drm_device *dev = node->minor->dev;
1389         drm_i915_private_t *dev_priv = dev->dev_private;
1390         struct intel_fbdev *ifbdev;
1391         struct intel_framebuffer *fb;
1392         int ret;
1393
1394         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1395         if (ret)
1396                 return ret;
1397
1398         ifbdev = dev_priv->fbdev;
1399         fb = to_intel_framebuffer(ifbdev->helper.fb);
1400
1401         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, refcount %d, obj ",
1402                    fb->base.width,
1403                    fb->base.height,
1404                    fb->base.depth,
1405                    fb->base.bits_per_pixel,
1406                    atomic_read(&fb->base.refcount.refcount));
1407         describe_obj(m, fb->obj);
1408         seq_putc(m, '\n');
1409         mutex_unlock(&dev->mode_config.mutex);
1410
1411         mutex_lock(&dev->mode_config.fb_lock);
1412         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
1413                 if (&fb->base == ifbdev->helper.fb)
1414                         continue;
1415
1416                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, refcount %d, obj ",
1417                            fb->base.width,
1418                            fb->base.height,
1419                            fb->base.depth,
1420                            fb->base.bits_per_pixel,
1421                            atomic_read(&fb->base.refcount.refcount));
1422                 describe_obj(m, fb->obj);
1423                 seq_putc(m, '\n');
1424         }
1425         mutex_unlock(&dev->mode_config.fb_lock);
1426
1427         return 0;
1428 }
1429
1430 static int i915_context_status(struct seq_file *m, void *unused)
1431 {
1432         struct drm_info_node *node = (struct drm_info_node *) m->private;
1433         struct drm_device *dev = node->minor->dev;
1434         drm_i915_private_t *dev_priv = dev->dev_private;
1435         struct intel_ring_buffer *ring;
1436         int ret, i;
1437
1438         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1439         if (ret)
1440                 return ret;
1441
1442         if (dev_priv->ips.pwrctx) {
1443                 seq_puts(m, "power context ");
1444                 describe_obj(m, dev_priv->ips.pwrctx);
1445                 seq_putc(m, '\n');
1446         }
1447
1448         if (dev_priv->ips.renderctx) {
1449                 seq_puts(m, "render context ");
1450                 describe_obj(m, dev_priv->ips.renderctx);
1451                 seq_putc(m, '\n');
1452         }
1453
1454         for_each_ring(ring, dev_priv, i) {
1455                 if (ring->default_context) {
1456                         seq_printf(m, "HW default context %s ring ", ring->name);
1457                         describe_obj(m, ring->default_context->obj);
1458                         seq_putc(m, '\n');
1459                 }
1460         }
1461
1462         mutex_unlock(&dev->mode_config.mutex);
1463
1464         return 0;
1465 }
1466
1467 static int i915_gen6_forcewake_count_info(struct seq_file *m, void *data)
1468 {
1469         struct drm_info_node *node = (struct drm_info_node *) m->private;
1470         struct drm_device *dev = node->minor->dev;
1471         struct drm_i915_private *dev_priv = dev->dev_private;
1472         unsigned forcewake_count;
1473
1474         spin_lock_irq(&dev_priv->uncore.lock);
1475         forcewake_count = dev_priv->uncore.forcewake_count;
1476         spin_unlock_irq(&dev_priv->uncore.lock);
1477
1478         seq_printf(m, "forcewake count = %u\n", forcewake_count);
1479
1480         return 0;
1481 }
1482
1483 static const char *swizzle_string(unsigned swizzle)
1484 {
1485         switch (swizzle) {
1486         case I915_BIT_6_SWIZZLE_NONE:
1487                 return "none";
1488         case I915_BIT_6_SWIZZLE_9:
1489                 return "bit9";
1490         case I915_BIT_6_SWIZZLE_9_10:
1491                 return "bit9/bit10";
1492         case I915_BIT_6_SWIZZLE_9_11:
1493                 return "bit9/bit11";
1494         case I915_BIT_6_SWIZZLE_9_10_11:
1495                 return "bit9/bit10/bit11";
1496         case I915_BIT_6_SWIZZLE_9_17:
1497                 return "bit9/bit17";
1498         case I915_BIT_6_SWIZZLE_9_10_17:
1499                 return "bit9/bit10/bit17";
1500         case I915_BIT_6_SWIZZLE_UNKNOWN:
1501                 return "unknown";
1502         }
1503
1504         return "bug";
1505 }
1506
1507 static int i915_swizzle_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         int ret;
1513
1514         ret = mutex_lock_interruptible(&dev->struct_mutex);
1515         if (ret)
1516                 return ret;
1517
1518         seq_printf(m, "bit6 swizzle for X-tiling = %s\n",
1519                    swizzle_string(dev_priv->mm.bit_6_swizzle_x));
1520         seq_printf(m, "bit6 swizzle for Y-tiling = %s\n",
1521                    swizzle_string(dev_priv->mm.bit_6_swizzle_y));
1522
1523         if (IS_GEN3(dev) || IS_GEN4(dev)) {
1524                 seq_printf(m, "DDC = 0x%08x\n",
1525                            I915_READ(DCC));
1526                 seq_printf(m, "C0DRB3 = 0x%04x\n",
1527                            I915_READ16(C0DRB3));
1528                 seq_printf(m, "C1DRB3 = 0x%04x\n",
1529                            I915_READ16(C1DRB3));
1530         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
1531                 seq_printf(m, "MAD_DIMM_C0 = 0x%08x\n",
1532                            I915_READ(MAD_DIMM_C0));
1533                 seq_printf(m, "MAD_DIMM_C1 = 0x%08x\n",
1534                            I915_READ(MAD_DIMM_C1));
1535                 seq_printf(m, "MAD_DIMM_C2 = 0x%08x\n",
1536                            I915_READ(MAD_DIMM_C2));
1537                 seq_printf(m, "TILECTL = 0x%08x\n",
1538                            I915_READ(TILECTL));
1539                 seq_printf(m, "ARB_MODE = 0x%08x\n",
1540                            I915_READ(ARB_MODE));
1541                 seq_printf(m, "DISP_ARB_CTL = 0x%08x\n",
1542                            I915_READ(DISP_ARB_CTL));
1543         }
1544         mutex_unlock(&dev->struct_mutex);
1545
1546         return 0;
1547 }
1548
1549 static int i915_ppgtt_info(struct seq_file *m, void *data)
1550 {
1551         struct drm_info_node *node = (struct drm_info_node *) m->private;
1552         struct drm_device *dev = node->minor->dev;
1553         struct drm_i915_private *dev_priv = dev->dev_private;
1554         struct intel_ring_buffer *ring;
1555         int i, ret;
1556
1557
1558         ret = mutex_lock_interruptible(&dev->struct_mutex);
1559         if (ret)
1560                 return ret;
1561         if (INTEL_INFO(dev)->gen == 6)
1562                 seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(GFX_MODE));
1563
1564         for_each_ring(ring, dev_priv, i) {
1565                 seq_printf(m, "%s\n", ring->name);
1566                 if (INTEL_INFO(dev)->gen == 7)
1567                         seq_printf(m, "GFX_MODE: 0x%08x\n", I915_READ(RING_MODE_GEN7(ring)));
1568                 seq_printf(m, "PP_DIR_BASE: 0x%08x\n", I915_READ(RING_PP_DIR_BASE(ring)));
1569                 seq_printf(m, "PP_DIR_BASE_READ: 0x%08x\n", I915_READ(RING_PP_DIR_BASE_READ(ring)));
1570                 seq_printf(m, "PP_DIR_DCLV: 0x%08x\n", I915_READ(RING_PP_DIR_DCLV(ring)));
1571         }
1572         if (dev_priv->mm.aliasing_ppgtt) {
1573                 struct i915_hw_ppgtt *ppgtt = dev_priv->mm.aliasing_ppgtt;
1574
1575                 seq_puts(m, "aliasing PPGTT:\n");
1576                 seq_printf(m, "pd gtt offset: 0x%08x\n", ppgtt->pd_offset);
1577         }
1578         seq_printf(m, "ECOCHK: 0x%08x\n", I915_READ(GAM_ECOCHK));
1579         mutex_unlock(&dev->struct_mutex);
1580
1581         return 0;
1582 }
1583
1584 static int i915_dpio_info(struct seq_file *m, void *data)
1585 {
1586         struct drm_info_node *node = (struct drm_info_node *) m->private;
1587         struct drm_device *dev = node->minor->dev;
1588         struct drm_i915_private *dev_priv = dev->dev_private;
1589         int ret;
1590
1591
1592         if (!IS_VALLEYVIEW(dev)) {
1593                 seq_puts(m, "unsupported\n");
1594                 return 0;
1595         }
1596
1597         ret = mutex_lock_interruptible(&dev_priv->dpio_lock);
1598         if (ret)
1599                 return ret;
1600
1601         seq_printf(m, "DPIO_CTL: 0x%08x\n", I915_READ(DPIO_CTL));
1602
1603         seq_printf(m, "DPIO_DIV_A: 0x%08x\n",
1604                    vlv_dpio_read(dev_priv, _DPIO_DIV_A));
1605         seq_printf(m, "DPIO_DIV_B: 0x%08x\n",
1606                    vlv_dpio_read(dev_priv, _DPIO_DIV_B));
1607
1608         seq_printf(m, "DPIO_REFSFR_A: 0x%08x\n",
1609                    vlv_dpio_read(dev_priv, _DPIO_REFSFR_A));
1610         seq_printf(m, "DPIO_REFSFR_B: 0x%08x\n",
1611                    vlv_dpio_read(dev_priv, _DPIO_REFSFR_B));
1612
1613         seq_printf(m, "DPIO_CORE_CLK_A: 0x%08x\n",
1614                    vlv_dpio_read(dev_priv, _DPIO_CORE_CLK_A));
1615         seq_printf(m, "DPIO_CORE_CLK_B: 0x%08x\n",
1616                    vlv_dpio_read(dev_priv, _DPIO_CORE_CLK_B));
1617
1618         seq_printf(m, "DPIO_LPF_COEFF_A: 0x%08x\n",
1619                    vlv_dpio_read(dev_priv, _DPIO_LPF_COEFF_A));
1620         seq_printf(m, "DPIO_LPF_COEFF_B: 0x%08x\n",
1621                    vlv_dpio_read(dev_priv, _DPIO_LPF_COEFF_B));
1622
1623         seq_printf(m, "DPIO_FASTCLK_DISABLE: 0x%08x\n",
1624                    vlv_dpio_read(dev_priv, DPIO_FASTCLK_DISABLE));
1625
1626         mutex_unlock(&dev_priv->dpio_lock);
1627
1628         return 0;
1629 }
1630
1631 static int i915_llc(struct seq_file *m, void *data)
1632 {
1633         struct drm_info_node *node = (struct drm_info_node *) m->private;
1634         struct drm_device *dev = node->minor->dev;
1635         struct drm_i915_private *dev_priv = dev->dev_private;
1636
1637         /* Size calculation for LLC is a bit of a pain. Ignore for now. */
1638         seq_printf(m, "LLC: %s\n", yesno(HAS_LLC(dev)));
1639         seq_printf(m, "eLLC: %zuMB\n", dev_priv->ellc_size);
1640
1641         return 0;
1642 }
1643
1644 static int i915_edp_psr_status(struct seq_file *m, void *data)
1645 {
1646         struct drm_info_node *node = m->private;
1647         struct drm_device *dev = node->minor->dev;
1648         struct drm_i915_private *dev_priv = dev->dev_private;
1649         u32 psrstat, psrperf;
1650
1651         if (!IS_HASWELL(dev)) {
1652                 seq_puts(m, "PSR not supported on this platform\n");
1653         } else if (IS_HASWELL(dev) && I915_READ(EDP_PSR_CTL) & EDP_PSR_ENABLE) {
1654                 seq_puts(m, "PSR enabled\n");
1655         } else {
1656                 seq_puts(m, "PSR disabled: ");
1657                 switch (dev_priv->no_psr_reason) {
1658                 case PSR_NO_SOURCE:
1659                         seq_puts(m, "not supported on this platform");
1660                         break;
1661                 case PSR_NO_SINK:
1662                         seq_puts(m, "not supported by panel");
1663                         break;
1664                 case PSR_MODULE_PARAM:
1665                         seq_puts(m, "disabled by flag");
1666                         break;
1667                 case PSR_CRTC_NOT_ACTIVE:
1668                         seq_puts(m, "crtc not active");
1669                         break;
1670                 case PSR_PWR_WELL_ENABLED:
1671                         seq_puts(m, "power well enabled");
1672                         break;
1673                 case PSR_NOT_TILED:
1674                         seq_puts(m, "not tiled");
1675                         break;
1676                 case PSR_SPRITE_ENABLED:
1677                         seq_puts(m, "sprite enabled");
1678                         break;
1679                 case PSR_S3D_ENABLED:
1680                         seq_puts(m, "stereo 3d enabled");
1681                         break;
1682                 case PSR_INTERLACED_ENABLED:
1683                         seq_puts(m, "interlaced enabled");
1684                         break;
1685                 case PSR_HSW_NOT_DDIA:
1686                         seq_puts(m, "HSW ties PSR to DDI A (eDP)");
1687                         break;
1688                 default:
1689                         seq_puts(m, "unknown reason");
1690                 }
1691                 seq_puts(m, "\n");
1692                 return 0;
1693         }
1694
1695         psrstat = I915_READ(EDP_PSR_STATUS_CTL);
1696
1697         seq_puts(m, "PSR Current State: ");
1698         switch (psrstat & EDP_PSR_STATUS_STATE_MASK) {
1699         case EDP_PSR_STATUS_STATE_IDLE:
1700                 seq_puts(m, "Reset state\n");
1701                 break;
1702         case EDP_PSR_STATUS_STATE_SRDONACK:
1703                 seq_puts(m, "Wait for TG/Stream to send on frame of data after SRD conditions are met\n");
1704                 break;
1705         case EDP_PSR_STATUS_STATE_SRDENT:
1706                 seq_puts(m, "SRD entry\n");
1707                 break;
1708         case EDP_PSR_STATUS_STATE_BUFOFF:
1709                 seq_puts(m, "Wait for buffer turn off\n");
1710                 break;
1711         case EDP_PSR_STATUS_STATE_BUFON:
1712                 seq_puts(m, "Wait for buffer turn on\n");
1713                 break;
1714         case EDP_PSR_STATUS_STATE_AUXACK:
1715                 seq_puts(m, "Wait for AUX to acknowledge on SRD exit\n");
1716                 break;
1717         case EDP_PSR_STATUS_STATE_SRDOFFACK:
1718                 seq_puts(m, "Wait for TG/Stream to acknowledge the SRD VDM exit\n");
1719                 break;
1720         default:
1721                 seq_puts(m, "Unknown\n");
1722                 break;
1723         }
1724
1725         seq_puts(m, "Link Status: ");
1726         switch (psrstat & EDP_PSR_STATUS_LINK_MASK) {
1727         case EDP_PSR_STATUS_LINK_FULL_OFF:
1728                 seq_puts(m, "Link is fully off\n");
1729                 break;
1730         case EDP_PSR_STATUS_LINK_FULL_ON:
1731                 seq_puts(m, "Link is fully on\n");
1732                 break;
1733         case EDP_PSR_STATUS_LINK_STANDBY:
1734                 seq_puts(m, "Link is in standby\n");
1735                 break;
1736         default:
1737                 seq_puts(m, "Unknown\n");
1738                 break;
1739         }
1740
1741         seq_printf(m, "PSR Entry Count: %u\n",
1742                    psrstat >> EDP_PSR_STATUS_COUNT_SHIFT &
1743                    EDP_PSR_STATUS_COUNT_MASK);
1744
1745         seq_printf(m, "Max Sleep Timer Counter: %u\n",
1746                    psrstat >> EDP_PSR_STATUS_MAX_SLEEP_TIMER_SHIFT &
1747                    EDP_PSR_STATUS_MAX_SLEEP_TIMER_MASK);
1748
1749         seq_printf(m, "Had AUX error: %s\n",
1750                    yesno(psrstat & EDP_PSR_STATUS_AUX_ERROR));
1751
1752         seq_printf(m, "Sending AUX: %s\n",
1753                    yesno(psrstat & EDP_PSR_STATUS_AUX_SENDING));
1754
1755         seq_printf(m, "Sending Idle: %s\n",
1756                    yesno(psrstat & EDP_PSR_STATUS_SENDING_IDLE));
1757
1758         seq_printf(m, "Sending TP2 TP3: %s\n",
1759                    yesno(psrstat & EDP_PSR_STATUS_SENDING_TP2_TP3));
1760
1761         seq_printf(m, "Sending TP1: %s\n",
1762                    yesno(psrstat & EDP_PSR_STATUS_SENDING_TP1));
1763
1764         seq_printf(m, "Idle Count: %u\n",
1765                    psrstat & EDP_PSR_STATUS_IDLE_MASK);
1766
1767         psrperf = (I915_READ(EDP_PSR_PERF_CNT)) & EDP_PSR_PERF_CNT_MASK;
1768         seq_printf(m, "Performance Counter: %u\n", psrperf);
1769
1770         return 0;
1771 }
1772
1773 static int i915_energy_uJ(struct seq_file *m, void *data)
1774 {
1775         struct drm_info_node *node = m->private;
1776         struct drm_device *dev = node->minor->dev;
1777         struct drm_i915_private *dev_priv = dev->dev_private;
1778         u64 power;
1779         u32 units;
1780
1781         if (INTEL_INFO(dev)->gen < 6)
1782                 return -ENODEV;
1783
1784         rdmsrl(MSR_RAPL_POWER_UNIT, power);
1785         power = (power & 0x1f00) >> 8;
1786         units = 1000000 / (1 << power); /* convert to uJ */
1787         power = I915_READ(MCH_SECP_NRG_STTS);
1788         power *= units;
1789
1790         seq_printf(m, "%llu", (long long unsigned)power);
1791
1792         return 0;
1793 }
1794
1795 static int i915_pc8_status(struct seq_file *m, void *unused)
1796 {
1797         struct drm_info_node *node = (struct drm_info_node *) m->private;
1798         struct drm_device *dev = node->minor->dev;
1799         struct drm_i915_private *dev_priv = dev->dev_private;
1800
1801         if (!IS_HASWELL(dev)) {
1802                 seq_puts(m, "not supported\n");
1803                 return 0;
1804         }
1805
1806         mutex_lock(&dev_priv->pc8.lock);
1807         seq_printf(m, "Requirements met: %s\n",
1808                    yesno(dev_priv->pc8.requirements_met));
1809         seq_printf(m, "GPU idle: %s\n", yesno(dev_priv->pc8.gpu_idle));
1810         seq_printf(m, "Disable count: %d\n", dev_priv->pc8.disable_count);
1811         seq_printf(m, "IRQs disabled: %s\n",
1812                    yesno(dev_priv->pc8.irqs_disabled));
1813         seq_printf(m, "Enabled: %s\n", yesno(dev_priv->pc8.enabled));
1814         mutex_unlock(&dev_priv->pc8.lock);
1815
1816         return 0;
1817 }
1818
1819 static int
1820 i915_wedged_get(void *data, u64 *val)
1821 {
1822         struct drm_device *dev = data;
1823         drm_i915_private_t *dev_priv = dev->dev_private;
1824
1825         *val = atomic_read(&dev_priv->gpu_error.reset_counter);
1826
1827         return 0;
1828 }
1829
1830 static int
1831 i915_wedged_set(void *data, u64 val)
1832 {
1833         struct drm_device *dev = data;
1834
1835         DRM_INFO("Manually setting wedged to %llu\n", val);
1836         i915_handle_error(dev, val);
1837
1838         return 0;
1839 }
1840
1841 DEFINE_SIMPLE_ATTRIBUTE(i915_wedged_fops,
1842                         i915_wedged_get, i915_wedged_set,
1843                         "%llu\n");
1844
1845 static int
1846 i915_ring_stop_get(void *data, u64 *val)
1847 {
1848         struct drm_device *dev = data;
1849         drm_i915_private_t *dev_priv = dev->dev_private;
1850
1851         *val = dev_priv->gpu_error.stop_rings;
1852
1853         return 0;
1854 }
1855
1856 static int
1857 i915_ring_stop_set(void *data, u64 val)
1858 {
1859         struct drm_device *dev = data;
1860         struct drm_i915_private *dev_priv = dev->dev_private;
1861         int ret;
1862
1863         DRM_DEBUG_DRIVER("Stopping rings 0x%08llx\n", val);
1864
1865         ret = mutex_lock_interruptible(&dev->struct_mutex);
1866         if (ret)
1867                 return ret;
1868
1869         dev_priv->gpu_error.stop_rings = val;
1870         mutex_unlock(&dev->struct_mutex);
1871
1872         return 0;
1873 }
1874
1875 DEFINE_SIMPLE_ATTRIBUTE(i915_ring_stop_fops,
1876                         i915_ring_stop_get, i915_ring_stop_set,
1877                         "0x%08llx\n");
1878
1879 #define DROP_UNBOUND 0x1
1880 #define DROP_BOUND 0x2
1881 #define DROP_RETIRE 0x4
1882 #define DROP_ACTIVE 0x8
1883 #define DROP_ALL (DROP_UNBOUND | \
1884                   DROP_BOUND | \
1885                   DROP_RETIRE | \
1886                   DROP_ACTIVE)
1887 static int
1888 i915_drop_caches_get(void *data, u64 *val)
1889 {
1890         *val = DROP_ALL;
1891
1892         return 0;
1893 }
1894
1895 static int
1896 i915_drop_caches_set(void *data, u64 val)
1897 {
1898         struct drm_device *dev = data;
1899         struct drm_i915_private *dev_priv = dev->dev_private;
1900         struct drm_i915_gem_object *obj, *next;
1901         struct i915_address_space *vm;
1902         struct i915_vma *vma, *x;
1903         int ret;
1904
1905         DRM_DEBUG_DRIVER("Dropping caches: 0x%08llx\n", val);
1906
1907         /* No need to check and wait for gpu resets, only libdrm auto-restarts
1908          * on ioctls on -EAGAIN. */
1909         ret = mutex_lock_interruptible(&dev->struct_mutex);
1910         if (ret)
1911                 return ret;
1912
1913         if (val & DROP_ACTIVE) {
1914                 ret = i915_gpu_idle(dev);
1915                 if (ret)
1916                         goto unlock;
1917         }
1918
1919         if (val & (DROP_RETIRE | DROP_ACTIVE))
1920                 i915_gem_retire_requests(dev);
1921
1922         if (val & DROP_BOUND) {
1923                 list_for_each_entry(vm, &dev_priv->vm_list, global_link) {
1924                         list_for_each_entry_safe(vma, x, &vm->inactive_list,
1925                                                  mm_list) {
1926                                 if (vma->obj->pin_count)
1927                                         continue;
1928
1929                                 ret = i915_vma_unbind(vma);
1930                                 if (ret)
1931                                         goto unlock;
1932                         }
1933                 }
1934         }
1935
1936         if (val & DROP_UNBOUND) {
1937                 list_for_each_entry_safe(obj, next, &dev_priv->mm.unbound_list,
1938                                          global_list)
1939                         if (obj->pages_pin_count == 0) {
1940                                 ret = i915_gem_object_put_pages(obj);
1941                                 if (ret)
1942                                         goto unlock;
1943                         }
1944         }
1945
1946 unlock:
1947         mutex_unlock(&dev->struct_mutex);
1948
1949         return ret;
1950 }
1951
1952 DEFINE_SIMPLE_ATTRIBUTE(i915_drop_caches_fops,
1953                         i915_drop_caches_get, i915_drop_caches_set,
1954                         "0x%08llx\n");
1955
1956 static int
1957 i915_max_freq_get(void *data, u64 *val)
1958 {
1959         struct drm_device *dev = data;
1960         drm_i915_private_t *dev_priv = dev->dev_private;
1961         int ret;
1962
1963         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1964                 return -ENODEV;
1965
1966         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1967         if (ret)
1968                 return ret;
1969
1970         if (IS_VALLEYVIEW(dev))
1971                 *val = vlv_gpu_freq(dev_priv->mem_freq,
1972                                     dev_priv->rps.max_delay);
1973         else
1974                 *val = dev_priv->rps.max_delay * GT_FREQUENCY_MULTIPLIER;
1975         mutex_unlock(&dev_priv->rps.hw_lock);
1976
1977         return 0;
1978 }
1979
1980 static int
1981 i915_max_freq_set(void *data, u64 val)
1982 {
1983         struct drm_device *dev = data;
1984         struct drm_i915_private *dev_priv = dev->dev_private;
1985         int ret;
1986
1987         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
1988                 return -ENODEV;
1989
1990         DRM_DEBUG_DRIVER("Manually setting max freq to %llu\n", val);
1991
1992         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
1993         if (ret)
1994                 return ret;
1995
1996         /*
1997          * Turbo will still be enabled, but won't go above the set value.
1998          */
1999         if (IS_VALLEYVIEW(dev)) {
2000                 val = vlv_freq_opcode(dev_priv->mem_freq, val);
2001                 dev_priv->rps.max_delay = val;
2002                 gen6_set_rps(dev, val);
2003         } else {
2004                 do_div(val, GT_FREQUENCY_MULTIPLIER);
2005                 dev_priv->rps.max_delay = val;
2006                 gen6_set_rps(dev, val);
2007         }
2008
2009         mutex_unlock(&dev_priv->rps.hw_lock);
2010
2011         return 0;
2012 }
2013
2014 DEFINE_SIMPLE_ATTRIBUTE(i915_max_freq_fops,
2015                         i915_max_freq_get, i915_max_freq_set,
2016                         "%llu\n");
2017
2018 static int
2019 i915_min_freq_get(void *data, u64 *val)
2020 {
2021         struct drm_device *dev = data;
2022         drm_i915_private_t *dev_priv = dev->dev_private;
2023         int ret;
2024
2025         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
2026                 return -ENODEV;
2027
2028         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
2029         if (ret)
2030                 return ret;
2031
2032         if (IS_VALLEYVIEW(dev))
2033                 *val = vlv_gpu_freq(dev_priv->mem_freq,
2034                                     dev_priv->rps.min_delay);
2035         else
2036                 *val = dev_priv->rps.min_delay * GT_FREQUENCY_MULTIPLIER;
2037         mutex_unlock(&dev_priv->rps.hw_lock);
2038
2039         return 0;
2040 }
2041
2042 static int
2043 i915_min_freq_set(void *data, u64 val)
2044 {
2045         struct drm_device *dev = data;
2046         struct drm_i915_private *dev_priv = dev->dev_private;
2047         int ret;
2048
2049         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
2050                 return -ENODEV;
2051
2052         DRM_DEBUG_DRIVER("Manually setting min freq to %llu\n", val);
2053
2054         ret = mutex_lock_interruptible(&dev_priv->rps.hw_lock);
2055         if (ret)
2056                 return ret;
2057
2058         /*
2059          * Turbo will still be enabled, but won't go below the set value.
2060          */
2061         if (IS_VALLEYVIEW(dev)) {
2062                 val = vlv_freq_opcode(dev_priv->mem_freq, val);
2063                 dev_priv->rps.min_delay = val;
2064                 valleyview_set_rps(dev, val);
2065         } else {
2066                 do_div(val, GT_FREQUENCY_MULTIPLIER);
2067                 dev_priv->rps.min_delay = val;
2068                 gen6_set_rps(dev, val);
2069         }
2070         mutex_unlock(&dev_priv->rps.hw_lock);
2071
2072         return 0;
2073 }
2074
2075 DEFINE_SIMPLE_ATTRIBUTE(i915_min_freq_fops,
2076                         i915_min_freq_get, i915_min_freq_set,
2077                         "%llu\n");
2078
2079 static int
2080 i915_cache_sharing_get(void *data, u64 *val)
2081 {
2082         struct drm_device *dev = data;
2083         drm_i915_private_t *dev_priv = dev->dev_private;
2084         u32 snpcr;
2085         int ret;
2086
2087         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
2088                 return -ENODEV;
2089
2090         ret = mutex_lock_interruptible(&dev->struct_mutex);
2091         if (ret)
2092                 return ret;
2093
2094         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
2095         mutex_unlock(&dev_priv->dev->struct_mutex);
2096
2097         *val = (snpcr & GEN6_MBC_SNPCR_MASK) >> GEN6_MBC_SNPCR_SHIFT;
2098
2099         return 0;
2100 }
2101
2102 static int
2103 i915_cache_sharing_set(void *data, u64 val)
2104 {
2105         struct drm_device *dev = data;
2106         struct drm_i915_private *dev_priv = dev->dev_private;
2107         u32 snpcr;
2108
2109         if (!(IS_GEN6(dev) || IS_GEN7(dev)))
2110                 return -ENODEV;
2111
2112         if (val > 3)
2113                 return -EINVAL;
2114
2115         DRM_DEBUG_DRIVER("Manually setting uncore sharing to %llu\n", val);
2116
2117         /* Update the cache sharing policy here as well */
2118         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
2119         snpcr &= ~GEN6_MBC_SNPCR_MASK;
2120         snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
2121         I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
2122
2123         return 0;
2124 }
2125
2126 DEFINE_SIMPLE_ATTRIBUTE(i915_cache_sharing_fops,
2127                         i915_cache_sharing_get, i915_cache_sharing_set,
2128                         "%llu\n");
2129
2130 /* As the drm_debugfs_init() routines are called before dev->dev_private is
2131  * allocated we need to hook into the minor for release. */
2132 static int
2133 drm_add_fake_info_node(struct drm_minor *minor,
2134                        struct dentry *ent,
2135                        const void *key)
2136 {
2137         struct drm_info_node *node;
2138
2139         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
2140         if (node == NULL) {
2141                 debugfs_remove(ent);
2142                 return -ENOMEM;
2143         }
2144
2145         node->minor = minor;
2146         node->dent = ent;
2147         node->info_ent = (void *) key;
2148
2149         mutex_lock(&minor->debugfs_lock);
2150         list_add(&node->list, &minor->debugfs_list);
2151         mutex_unlock(&minor->debugfs_lock);
2152
2153         return 0;
2154 }
2155
2156 static int i915_forcewake_open(struct inode *inode, struct file *file)
2157 {
2158         struct drm_device *dev = inode->i_private;
2159         struct drm_i915_private *dev_priv = dev->dev_private;
2160
2161         if (INTEL_INFO(dev)->gen < 6)
2162                 return 0;
2163
2164         gen6_gt_force_wake_get(dev_priv);
2165
2166         return 0;
2167 }
2168
2169 static int i915_forcewake_release(struct inode *inode, struct file *file)
2170 {
2171         struct drm_device *dev = inode->i_private;
2172         struct drm_i915_private *dev_priv = dev->dev_private;
2173
2174         if (INTEL_INFO(dev)->gen < 6)
2175                 return 0;
2176
2177         gen6_gt_force_wake_put(dev_priv);
2178
2179         return 0;
2180 }
2181
2182 static const struct file_operations i915_forcewake_fops = {
2183         .owner = THIS_MODULE,
2184         .open = i915_forcewake_open,
2185         .release = i915_forcewake_release,
2186 };
2187
2188 static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
2189 {
2190         struct drm_device *dev = minor->dev;
2191         struct dentry *ent;
2192
2193         ent = debugfs_create_file("i915_forcewake_user",
2194                                   S_IRUSR,
2195                                   root, dev,
2196                                   &i915_forcewake_fops);
2197         if (IS_ERR(ent))
2198                 return PTR_ERR(ent);
2199
2200         return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
2201 }
2202
2203 static int i915_debugfs_create(struct dentry *root,
2204                                struct drm_minor *minor,
2205                                const char *name,
2206                                const struct file_operations *fops)
2207 {
2208         struct drm_device *dev = minor->dev;
2209         struct dentry *ent;
2210
2211         ent = debugfs_create_file(name,
2212                                   S_IRUGO | S_IWUSR,
2213                                   root, dev,
2214                                   fops);
2215         if (IS_ERR(ent))
2216                 return PTR_ERR(ent);
2217
2218         return drm_add_fake_info_node(minor, ent, fops);
2219 }
2220
2221 static struct drm_info_list i915_debugfs_list[] = {
2222         {"i915_capabilities", i915_capabilities, 0},
2223         {"i915_gem_objects", i915_gem_object_info, 0},
2224         {"i915_gem_gtt", i915_gem_gtt_info, 0},
2225         {"i915_gem_pinned", i915_gem_gtt_info, 0, (void *) PINNED_LIST},
2226         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
2227         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
2228         {"i915_gem_stolen", i915_gem_stolen_list_info },
2229         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
2230         {"i915_gem_request", i915_gem_request_info, 0},
2231         {"i915_gem_seqno", i915_gem_seqno_info, 0},
2232         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
2233         {"i915_gem_interrupt", i915_interrupt_info, 0},
2234         {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
2235         {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
2236         {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
2237         {"i915_gem_hws_vebox", i915_hws_info, 0, (void *)VECS},
2238         {"i915_rstdby_delays", i915_rstdby_delays, 0},
2239         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
2240         {"i915_delayfreq_table", i915_delayfreq_table, 0},
2241         {"i915_inttoext_table", i915_inttoext_table, 0},
2242         {"i915_drpc_info", i915_drpc_info, 0},
2243         {"i915_emon_status", i915_emon_status, 0},
2244         {"i915_ring_freq_table", i915_ring_freq_table, 0},
2245         {"i915_gfxec", i915_gfxec, 0},
2246         {"i915_fbc_status", i915_fbc_status, 0},
2247         {"i915_ips_status", i915_ips_status, 0},
2248         {"i915_sr_status", i915_sr_status, 0},
2249         {"i915_opregion", i915_opregion, 0},
2250         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
2251         {"i915_context_status", i915_context_status, 0},
2252         {"i915_gen6_forcewake_count", i915_gen6_forcewake_count_info, 0},
2253         {"i915_swizzle_info", i915_swizzle_info, 0},
2254         {"i915_ppgtt_info", i915_ppgtt_info, 0},
2255         {"i915_dpio", i915_dpio_info, 0},
2256         {"i915_llc", i915_llc, 0},
2257         {"i915_edp_psr_status", i915_edp_psr_status, 0},
2258         {"i915_energy_uJ", i915_energy_uJ, 0},
2259         {"i915_pc8_status", i915_pc8_status, 0},
2260 };
2261 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
2262
2263 static struct i915_debugfs_files {
2264         const char *name;
2265         const struct file_operations *fops;
2266 } i915_debugfs_files[] = {
2267         {"i915_wedged", &i915_wedged_fops},
2268         {"i915_max_freq", &i915_max_freq_fops},
2269         {"i915_min_freq", &i915_min_freq_fops},
2270         {"i915_cache_sharing", &i915_cache_sharing_fops},
2271         {"i915_ring_stop", &i915_ring_stop_fops},
2272         {"i915_gem_drop_caches", &i915_drop_caches_fops},
2273         {"i915_error_state", &i915_error_state_fops},
2274         {"i915_next_seqno", &i915_next_seqno_fops},
2275 };
2276
2277 int i915_debugfs_init(struct drm_minor *minor)
2278 {
2279         int ret, i;
2280
2281         ret = i915_forcewake_create(minor->debugfs_root, minor);
2282         if (ret)
2283                 return ret;
2284
2285         for (i = 0; i < ARRAY_SIZE(i915_debugfs_files); i++) {
2286                 ret = i915_debugfs_create(minor->debugfs_root, minor,
2287                                           i915_debugfs_files[i].name,
2288                                           i915_debugfs_files[i].fops);
2289                 if (ret)
2290                         return ret;
2291         }
2292
2293         return drm_debugfs_create_files(i915_debugfs_list,
2294                                         I915_DEBUGFS_ENTRIES,
2295                                         minor->debugfs_root, minor);
2296 }
2297
2298 void i915_debugfs_cleanup(struct drm_minor *minor)
2299 {
2300         int i;
2301
2302         drm_debugfs_remove_files(i915_debugfs_list,
2303                                  I915_DEBUGFS_ENTRIES, minor);
2304         drm_debugfs_remove_files((struct drm_info_list *) &i915_forcewake_fops,
2305                                  1, minor);
2306         for (i = 0; i < ARRAY_SIZE(i915_debugfs_files); i++) {
2307                 struct drm_info_list *info_list =
2308                         (struct drm_info_list *) i915_debugfs_files[i].fops;
2309
2310                 drm_debugfs_remove_files(info_list, 1, minor);
2311         }
2312 }
2313
2314 #endif /* CONFIG_DEBUG_FS */