drivers/gpu/drm/i915/i915_debugfs.c

   1 /*
   2  * Copyright © 2008 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *    Eric Anholt <eric@anholt.net>
  25  *    Keith Packard <keithp@keithp.com>
  26  *
  27  */
  28
  29 #include <linux/seq_file.h>
  30 #include <linux/debugfs.h>
  31 #include <linux/slab.h>
  32 #include "drmP.h"
  33 #include "drm.h"
  34 #include "intel_drv.h"
  35 #include "intel_ringbuffer.h"
  36 #include "i915_drm.h"
  37 #include "i915_drv.h"
  38
  39 #define DRM_I915_RING_DEBUG 1
  40
  41
  42 #if defined(CONFIG_DEBUG_FS)
  43
  44 enum {
  45         ACTIVE_LIST,
  46         FLUSHING_LIST,
  47         INACTIVE_LIST,
  48         PINNED_LIST,
  49         DEFERRED_FREE_LIST,
  50 };
  51
  52 static const char *yesno(int v)
  53 {
  54         return v ? "yes" : "no";
  55 }
  56
  57 static int i915_capabilities(struct seq_file *m, void *data)
  58 {
  59         struct drm_info_node *node = (struct drm_info_node *) m->private;
  60         struct drm_device *dev = node->minor->dev;
  61         const struct intel_device_info *info = INTEL_INFO(dev);
  62
  63         seq_printf(m, "gen: %d\n", info->gen);
  64 #define B(x) seq_printf(m, #x ": %s\n", yesno(info->x))
  65         B(is_mobile);
  66         B(is_i85x);
  67         B(is_i915g);
  68         B(is_i945gm);
  69         B(is_g33);
  70         B(need_gfx_hws);
  71         B(is_g4x);
  72         B(is_pineview);
  73         B(is_broadwater);
  74         B(is_crestline);
  75         B(has_fbc);
  76         B(has_pipe_cxsr);
  77         B(has_hotplug);
  78         B(cursor_needs_physical);
  79         B(has_overlay);
  80         B(overlay_needs_physical);
  81         B(supports_tv);
  82         B(has_bsd_ring);
  83         B(has_blt_ring);
  84 #undef B
  85
  86         return 0;
  87 }
  88
  89 static const char *get_pin_flag(struct drm_i915_gem_object *obj)
  90 {
  91         if (obj->user_pin_count > 0)
  92                 return "P";
  93         else if (obj->pin_count > 0)
  94                 return "p";
  95         else
  96                 return " ";
  97 }
  98
  99 static const char *get_tiling_flag(struct drm_i915_gem_object *obj)
 100 {
 101         switch (obj->tiling_mode) {
 102         default:
 103         case I915_TILING_NONE: return " ";
 104         case I915_TILING_X: return "X";
 105         case I915_TILING_Y: return "Y";
 106         }
 107 }
 108
 109 static const char *cache_level_str(int type)
 110 {
 111         switch (type) {
 112         case I915_CACHE_NONE: return " uncached";
 113         case I915_CACHE_LLC: return " snooped (LLC)";
 114         case I915_CACHE_LLC_MLC: return " snooped (LLC+MLC)";
 115         default: return "";
 116         }
 117 }
 118
 119 static void
 120 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 121 {
 122         seq_printf(m, "%p: %s%s %8zd %04x %04x %d %d%s%s%s",
 123                    &obj->base,
 124                    get_pin_flag(obj),
 125                    get_tiling_flag(obj),
 126                    obj->base.size,
 127                    obj->base.read_domains,
 128                    obj->base.write_domain,
 129                    obj->last_rendering_seqno,
 130                    obj->last_fenced_seqno,
 131                    cache_level_str(obj->cache_level),
 132                    obj->dirty ? " dirty" : "",
 133                    obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
 134         if (obj->base.name)
 135                 seq_printf(m, " (name: %d)", obj->base.name);
 136         if (obj->fence_reg != I915_FENCE_REG_NONE)
 137                 seq_printf(m, " (fence: %d)", obj->fence_reg);
 138         if (obj->gtt_space != NULL)
 139                 seq_printf(m, " (gtt offset: %08x, size: %08x)",
 140                            obj->gtt_offset, (unsigned int)obj->gtt_space->size);
 141         if (obj->pin_mappable || obj->fault_mappable) {
 142                 char s[3], *t = s;
 143                 if (obj->pin_mappable)
 144                         *t++ = 'p';
 145                 if (obj->fault_mappable)
 146                         *t++ = 'f';
 147                 *t = '\0';
 148                 seq_printf(m, " (%s mappable)", s);
 149         }
 150         if (obj->ring != NULL)
 151                 seq_printf(m, " (%s)", obj->ring->name);
 152 }
 153
 154 static int i915_gem_object_list_info(struct seq_file *m, void *data)
 155 {
 156         struct drm_info_node *node = (struct drm_info_node *) m->private;
 157         uintptr_t list = (uintptr_t) node->info_ent->data;
 158         struct list_head *head;
 159         struct drm_device *dev = node->minor->dev;
 160         drm_i915_private_t *dev_priv = dev->dev_private;
 161         struct drm_i915_gem_object *obj;
 162         size_t total_obj_size, total_gtt_size;
 163         int count, ret;
 164
 165         ret = mutex_lock_interruptible(&dev->struct_mutex);
 166         if (ret)
 167                 return ret;
 168
 169         switch (list) {
 170         case ACTIVE_LIST:
 171                 seq_printf(m, "Active:\n");
 172                 head = &dev_priv->mm.active_list;
 173                 break;
 174         case INACTIVE_LIST:
 175                 seq_printf(m, "Inactive:\n");
 176                 head = &dev_priv->mm.inactive_list;
 177                 break;
 178         case PINNED_LIST:
 179                 seq_printf(m, "Pinned:\n");
 180                 head = &dev_priv->mm.pinned_list;
 181                 break;
 182         case FLUSHING_LIST:
 183                 seq_printf(m, "Flushing:\n");
 184                 head = &dev_priv->mm.flushing_list;
 185                 break;
 186         case DEFERRED_FREE_LIST:
 187                 seq_printf(m, "Deferred free:\n");
 188                 head = &dev_priv->mm.deferred_free_list;
 189                 break;
 190         default:
 191                 mutex_unlock(&dev->struct_mutex);
 192                 return -EINVAL;
 193         }
 194
 195         total_obj_size = total_gtt_size = count = 0;
 196         list_for_each_entry(obj, head, mm_list) {
 197                 seq_printf(m, "   ");
 198                 describe_obj(m, obj);
 199                 seq_printf(m, "\n");
 200                 total_obj_size += obj->base.size;
 201                 total_gtt_size += obj->gtt_space->size;
 202                 count++;
 203         }
 204         mutex_unlock(&dev->struct_mutex);
 205
 206         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 207                    count, total_obj_size, total_gtt_size);
 208         return 0;
 209 }
 210
 211 #define count_objects(list, member) do { \
 212         list_for_each_entry(obj, list, member) { \
 213                 size += obj->gtt_space->size; \
 214                 ++count; \
 215                 if (obj->map_and_fenceable) { \
 216                         mappable_size += obj->gtt_space->size; \
 217                         ++mappable_count; \
 218                 } \
 219         } \
 220 } while (0)
 221
 222 static int i915_gem_object_info(struct seq_file *m, void* data)
 223 {
 224         struct drm_info_node *node = (struct drm_info_node *) m->private;
 225         struct drm_device *dev = node->minor->dev;
 226         struct drm_i915_private *dev_priv = dev->dev_private;
 227         u32 count, mappable_count;
 228         size_t size, mappable_size;
 229         struct drm_i915_gem_object *obj;
 230         int ret;
 231
 232         ret = mutex_lock_interruptible(&dev->struct_mutex);
 233         if (ret)
 234                 return ret;
 235
 236         seq_printf(m, "%u objects, %zu bytes\n",
 237                    dev_priv->mm.object_count,
 238                    dev_priv->mm.object_memory);
 239
 240         size = count = mappable_size = mappable_count = 0;
 241         count_objects(&dev_priv->mm.gtt_list, gtt_list);
 242         seq_printf(m, "%u [%u] objects, %zu [%zu] bytes in gtt\n",
 243                    count, mappable_count, size, mappable_size);
 244
 245         size = count = mappable_size = mappable_count = 0;
 246         count_objects(&dev_priv->mm.active_list, mm_list);
 247         count_objects(&dev_priv->mm.flushing_list, mm_list);
 248         seq_printf(m, "  %u [%u] active objects, %zu [%zu] bytes\n",
 249                    count, mappable_count, size, mappable_size);
 250
 251         size = count = mappable_size = mappable_count = 0;
 252         count_objects(&dev_priv->mm.pinned_list, mm_list);
 253         seq_printf(m, "  %u [%u] pinned objects, %zu [%zu] bytes\n",
 254                    count, mappable_count, size, mappable_size);
 255
 256         size = count = mappable_size = mappable_count = 0;
 257         count_objects(&dev_priv->mm.inactive_list, mm_list);
 258         seq_printf(m, "  %u [%u] inactive objects, %zu [%zu] bytes\n",
 259                    count, mappable_count, size, mappable_size);
 260
 261         size = count = mappable_size = mappable_count = 0;
 262         count_objects(&dev_priv->mm.deferred_free_list, mm_list);
 263         seq_printf(m, "  %u [%u] freed objects, %zu [%zu] bytes\n",
 264                    count, mappable_count, size, mappable_size);
 265
 266         size = count = mappable_size = mappable_count = 0;
 267         list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
 268                 if (obj->fault_mappable) {
 269                         size += obj->gtt_space->size;
 270                         ++count;
 271                 }
 272                 if (obj->pin_mappable) {
 273                         mappable_size += obj->gtt_space->size;
 274                         ++mappable_count;
 275                 }
 276         }
 277         seq_printf(m, "%u pinned mappable objects, %zu bytes\n",
 278                    mappable_count, mappable_size);
 279         seq_printf(m, "%u fault mappable objects, %zu bytes\n",
 280                    count, size);
 281
 282         seq_printf(m, "%zu [%zu] gtt total\n",
 283                    dev_priv->mm.gtt_total, dev_priv->mm.mappable_gtt_total);
 284
 285         mutex_unlock(&dev->struct_mutex);
 286
 287         return 0;
 288 }
 289
 290 static int i915_gem_gtt_info(struct seq_file *m, void* data)
 291 {
 292         struct drm_info_node *node = (struct drm_info_node *) m->private;
 293         struct drm_device *dev = node->minor->dev;
 294         struct drm_i915_private *dev_priv = dev->dev_private;
 295         struct drm_i915_gem_object *obj;
 296         size_t total_obj_size, total_gtt_size;
 297         int count, ret;
 298
 299         ret = mutex_lock_interruptible(&dev->struct_mutex);
 300         if (ret)
 301                 return ret;
 302
 303         total_obj_size = total_gtt_size = count = 0;
 304         list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
 305                 seq_printf(m, "   ");
 306                 describe_obj(m, obj);
 307                 seq_printf(m, "\n");
 308                 total_obj_size += obj->base.size;
 309                 total_gtt_size += obj->gtt_space->size;
 310                 count++;
 311         }
 312
 313         mutex_unlock(&dev->struct_mutex);
 314
 315         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 316                    count, total_obj_size, total_gtt_size);
 317
 318         return 0;
 319 }
 320
 321
 322 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
 323 {
 324         struct drm_info_node *node = (struct drm_info_node *) m->private;
 325         struct drm_device *dev = node->minor->dev;
 326         unsigned long flags;
 327         struct intel_crtc *crtc;
 328
 329         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
 330                 const char pipe = pipe_name(crtc->pipe);
 331                 const char plane = plane_name(crtc->plane);
 332                 struct intel_unpin_work *work;
 333
 334                 spin_lock_irqsave(&dev->event_lock, flags);
 335                 work = crtc->unpin_work;
 336                 if (work == NULL) {
 337                         seq_printf(m, "No flip due on pipe %c (plane %c)\n",
 338                                    pipe, plane);
 339                 } else {
 340                         if (!work->pending) {
 341                                 seq_printf(m, "Flip queued on pipe %c (plane %c)\n",
 342                                            pipe, plane);
 343                         } else {
 344                                 seq_printf(m, "Flip pending (waiting for vsync) on pipe %c (plane %c)\n",
 345                                            pipe, plane);
 346                         }
 347                         if (work->enable_stall_check)
 348                                 seq_printf(m, "Stall check enabled, ");
 349                         else
 350                                 seq_printf(m, "Stall check waiting for page flip ioctl, ");
 351                         seq_printf(m, "%d prepares\n", work->pending);
 352
 353                         if (work->old_fb_obj) {
 354                                 struct drm_i915_gem_object *obj = work->old_fb_obj;
 355                                 if (obj)
 356                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 357                         }
 358                         if (work->pending_flip_obj) {
 359                                 struct drm_i915_gem_object *obj = work->pending_flip_obj;
 360                                 if (obj)
 361                                         seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 362                         }
 363                 }
 364                 spin_unlock_irqrestore(&dev->event_lock, flags);
 365         }
 366
 367         return 0;
 368 }
 369
 370 static int i915_gem_request_info(struct seq_file *m, void *data)
 371 {
 372         struct drm_info_node *node = (struct drm_info_node *) m->private;
 373         struct drm_device *dev = node->minor->dev;
 374         drm_i915_private_t *dev_priv = dev->dev_private;
 375         struct drm_i915_gem_request *gem_request;
 376         int ret, count;
 377
 378         ret = mutex_lock_interruptible(&dev->struct_mutex);
 379         if (ret)
 380                 return ret;
 381
 382         count = 0;
 383         if (!list_empty(&dev_priv->ring[RCS].request_list)) {
 384                 seq_printf(m, "Render requests:\n");
 385                 list_for_each_entry(gem_request,
 386                                     &dev_priv->ring[RCS].request_list,
 387                                     list) {
 388                         seq_printf(m, "    %d @ %d\n",
 389                                    gem_request->seqno,
 390                                    (int) (jiffies - gem_request->emitted_jiffies));
 391                 }
 392                 count++;
 393         }
 394         if (!list_empty(&dev_priv->ring[VCS].request_list)) {
 395                 seq_printf(m, "BSD requests:\n");
 396                 list_for_each_entry(gem_request,
 397                                     &dev_priv->ring[VCS].request_list,
 398                                     list) {
 399                         seq_printf(m, "    %d @ %d\n",
 400                                    gem_request->seqno,
 401                                    (int) (jiffies - gem_request->emitted_jiffies));
 402                 }
 403                 count++;
 404         }
 405         if (!list_empty(&dev_priv->ring[BCS].request_list)) {
 406                 seq_printf(m, "BLT requests:\n");
 407                 list_for_each_entry(gem_request,
 408                                     &dev_priv->ring[BCS].request_list,
 409                                     list) {
 410                         seq_printf(m, "    %d @ %d\n",
 411                                    gem_request->seqno,
 412                                    (int) (jiffies - gem_request->emitted_jiffies));
 413                 }
 414                 count++;
 415         }
 416         mutex_unlock(&dev->struct_mutex);
 417
 418         if (count == 0)
 419                 seq_printf(m, "No requests\n");
 420
 421         return 0;
 422 }
 423
 424 static void i915_ring_seqno_info(struct seq_file *m,
 425                                  struct intel_ring_buffer *ring)
 426 {
 427         if (ring->get_seqno) {
 428                 seq_printf(m, "Current sequence (%s): %d\n",
 429                            ring->name, ring->get_seqno(ring));
 430                 seq_printf(m, "Waiter sequence (%s):  %d\n",
 431                            ring->name, ring->waiting_seqno);
 432                 seq_printf(m, "IRQ sequence (%s):     %d\n",
 433                            ring->name, ring->irq_seqno);
 434         }
 435 }
 436
 437 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 438 {
 439         struct drm_info_node *node = (struct drm_info_node *) m->private;
 440         struct drm_device *dev = node->minor->dev;
 441         drm_i915_private_t *dev_priv = dev->dev_private;
 442         int ret, i;
 443
 444         ret = mutex_lock_interruptible(&dev->struct_mutex);
 445         if (ret)
 446                 return ret;
 447
 448         for (i = 0; i < I915_NUM_RINGS; i++)
 449                 i915_ring_seqno_info(m, &dev_priv->ring[i]);
 450
 451         mutex_unlock(&dev->struct_mutex);
 452
 453         return 0;
 454 }
 455
 456
 457 static int i915_interrupt_info(struct seq_file *m, void *data)
 458 {
 459         struct drm_info_node *node = (struct drm_info_node *) m->private;
 460         struct drm_device *dev = node->minor->dev;
 461         drm_i915_private_t *dev_priv = dev->dev_private;
 462         int ret, i, pipe;
 463
 464         ret = mutex_lock_interruptible(&dev->struct_mutex);
 465         if (ret)
 466                 return ret;
 467
 468         if (!HAS_PCH_SPLIT(dev)) {
 469                 seq_printf(m, "Interrupt enable:    %08x\n",
 470                            I915_READ(IER));
 471                 seq_printf(m, "Interrupt identity:  %08x\n",
 472                            I915_READ(IIR));
 473                 seq_printf(m, "Interrupt mask:      %08x\n",
 474                            I915_READ(IMR));
 475                 for_each_pipe(pipe)
 476                         seq_printf(m, "Pipe %c stat:         %08x\n",
 477                                    pipe_name(pipe),
 478                                    I915_READ(PIPESTAT(pipe)));
 479         } else {
 480                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
 481                            I915_READ(DEIER));
 482                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
 483                            I915_READ(DEIIR));
 484                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
 485                            I915_READ(DEIMR));
 486                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
 487                            I915_READ(SDEIER));
 488                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
 489                            I915_READ(SDEIIR));
 490                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
 491                            I915_READ(SDEIMR));
 492                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
 493                            I915_READ(GTIER));
 494                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
 495                            I915_READ(GTIIR));
 496                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
 497                            I915_READ(GTIMR));
 498         }
 499         seq_printf(m, "Interrupts received: %d\n",
 500                    atomic_read(&dev_priv->irq_received));
 501         for (i = 0; i < I915_NUM_RINGS; i++) {
 502                 if (IS_GEN6(dev) || IS_GEN7(dev)) {
 503                         seq_printf(m, "Graphics Interrupt mask (%s):    %08x\n",
 504                                    dev_priv->ring[i].name,
 505                                    I915_READ_IMR(&dev_priv->ring[i]));
 506                 }
 507                 i915_ring_seqno_info(m, &dev_priv->ring[i]);
 508         }
 509         mutex_unlock(&dev->struct_mutex);
 510
 511         return 0;
 512 }
 513
 514 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 515 {
 516         struct drm_info_node *node = (struct drm_info_node *) m->private;
 517         struct drm_device *dev = node->minor->dev;
 518         drm_i915_private_t *dev_priv = dev->dev_private;
 519         int i, ret;
 520
 521         ret = mutex_lock_interruptible(&dev->struct_mutex);
 522         if (ret)
 523                 return ret;
 524
 525         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 526         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 527         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 528                 struct drm_i915_gem_object *obj = dev_priv->fence_regs[i].obj;
 529
 530                 seq_printf(m, "Fenced object[%2d] = ", i);
 531                 if (obj == NULL)
 532                         seq_printf(m, "unused");
 533                 else
 534                         describe_obj(m, obj);
 535                 seq_printf(m, "\n");
 536         }
 537
 538         mutex_unlock(&dev->struct_mutex);
 539         return 0;
 540 }
 541
 542 static int i915_hws_info(struct seq_file *m, void *data)
 543 {
 544         struct drm_info_node *node = (struct drm_info_node *) m->private;
 545         struct drm_device *dev = node->minor->dev;
 546         drm_i915_private_t *dev_priv = dev->dev_private;
 547         struct intel_ring_buffer *ring;
 548         const volatile u32 __iomem *hws;
 549         int i;
 550
 551         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 552         hws = (volatile u32 __iomem *)ring->status_page.page_addr;
 553         if (hws == NULL)
 554                 return 0;
 555
 556         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 557                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 558                            i * 4,
 559                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 560         }
 561         return 0;
 562 }
 563
 564 static void i915_dump_object(struct seq_file *m,
 565                              struct io_mapping *mapping,
 566                              struct drm_i915_gem_object *obj)
 567 {
 568         int page, page_count, i;
 569
 570         page_count = obj->base.size / PAGE_SIZE;
 571         for (page = 0; page < page_count; page++) {
 572                 u32 *mem = io_mapping_map_wc(mapping,
 573                                              obj->gtt_offset + page * PAGE_SIZE);
 574                 for (i = 0; i < PAGE_SIZE; i += 4)
 575                         seq_printf(m, "%08x :  %08x\n", i, mem[i / 4]);
 576                 io_mapping_unmap(mem);
 577         }
 578 }
 579
 580 static int i915_batchbuffer_info(struct seq_file *m, void *data)
 581 {
 582         struct drm_info_node *node = (struct drm_info_node *) m->private;
 583         struct drm_device *dev = node->minor->dev;
 584         drm_i915_private_t *dev_priv = dev->dev_private;
 585         struct drm_i915_gem_object *obj;
 586         int ret;
 587
 588         ret = mutex_lock_interruptible(&dev->struct_mutex);
 589         if (ret)
 590                 return ret;
 591
 592         list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list) {
 593                 if (obj->base.read_domains & I915_GEM_DOMAIN_COMMAND) {
 594                     seq_printf(m, "--- gtt_offset = 0x%08x\n", obj->gtt_offset);
 595                     i915_dump_object(m, dev_priv->mm.gtt_mapping, obj);
 596                 }
 597         }
 598
 599         mutex_unlock(&dev->struct_mutex);
 600         return 0;
 601 }
 602
 603 static int i915_ringbuffer_data(struct seq_file *m, void *data)
 604 {
 605         struct drm_info_node *node = (struct drm_info_node *) m->private;
 606         struct drm_device *dev = node->minor->dev;
 607         drm_i915_private_t *dev_priv = dev->dev_private;
 608         struct intel_ring_buffer *ring;
 609         int ret;
 610
 611         ret = mutex_lock_interruptible(&dev->struct_mutex);
 612         if (ret)
 613                 return ret;
 614
 615         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 616         if (!ring->obj) {
 617                 seq_printf(m, "No ringbuffer setup\n");
 618         } else {
 619                 const u8 __iomem *virt = ring->virtual_start;
 620                 uint32_t off;
 621
 622                 for (off = 0; off < ring->size; off += 4) {
 623                         uint32_t *ptr = (uint32_t *)(virt + off);
 624                         seq_printf(m, "%08x :  %08x\n", off, *ptr);
 625                 }
 626         }
 627         mutex_unlock(&dev->struct_mutex);
 628
 629         return 0;
 630 }
 631
 632 static int i915_ringbuffer_info(struct seq_file *m, void *data)
 633 {
 634         struct drm_info_node *node = (struct drm_info_node *) m->private;
 635         struct drm_device *dev = node->minor->dev;
 636         drm_i915_private_t *dev_priv = dev->dev_private;
 637         struct intel_ring_buffer *ring;
 638
 639         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 640         if (ring->size == 0)
 641                 return 0;
 642
 643         seq_printf(m, "Ring %s:\n", ring->name);
 644         seq_printf(m, "  Head :    %08x\n", I915_READ_HEAD(ring) & HEAD_ADDR);
 645         seq_printf(m, "  Tail :    %08x\n", I915_READ_TAIL(ring) & TAIL_ADDR);
 646         seq_printf(m, "  Size :    %08x\n", ring->size);
 647         seq_printf(m, "  Active :  %08x\n", intel_ring_get_active_head(ring));
 648         seq_printf(m, "  NOPID :   %08x\n", I915_READ_NOPID(ring));
 649         if (IS_GEN6(dev)) {
 650                 seq_printf(m, "  Sync 0 :   %08x\n", I915_READ_SYNC_0(ring));
 651                 seq_printf(m, "  Sync 1 :   %08x\n", I915_READ_SYNC_1(ring));
 652         }
 653         seq_printf(m, "  Control : %08x\n", I915_READ_CTL(ring));
 654         seq_printf(m, "  Start :   %08x\n", I915_READ_START(ring));
 655
 656         return 0;
 657 }
 658
 659 static const char *ring_str(int ring)
 660 {
 661         switch (ring) {
 662         case RING_RENDER: return " render";
 663         case RING_BSD: return " bsd";
 664         case RING_BLT: return " blt";
 665         default: return "";
 666         }
 667 }
 668
 669 static const char *pin_flag(int pinned)
 670 {
 671         if (pinned > 0)
 672                 return " P";
 673         else if (pinned < 0)
 674                 return " p";
 675         else
 676                 return "";
 677 }
 678
 679 static const char *tiling_flag(int tiling)
 680 {
 681         switch (tiling) {
 682         default:
 683         case I915_TILING_NONE: return "";
 684         case I915_TILING_X: return " X";
 685         case I915_TILING_Y: return " Y";
 686         }
 687 }
 688
 689 static const char *dirty_flag(int dirty)
 690 {
 691         return dirty ? " dirty" : "";
 692 }
 693
 694 static const char *purgeable_flag(int purgeable)
 695 {
 696         return purgeable ? " purgeable" : "";
 697 }
 698
 699 static void print_error_buffers(struct seq_file *m,
 700                                 const char *name,
 701                                 struct drm_i915_error_buffer *err,
 702                                 int count)
 703 {
 704         seq_printf(m, "%s [%d]:\n", name, count);
 705
 706         while (count--) {
 707                 seq_printf(m, "  %08x %8u %04x %04x %08x%s%s%s%s%s%s",
 708                            err->gtt_offset,
 709                            err->size,
 710                            err->read_domains,
 711                            err->write_domain,
 712                            err->seqno,
 713                            pin_flag(err->pinned),
 714                            tiling_flag(err->tiling),
 715                            dirty_flag(err->dirty),
 716                            purgeable_flag(err->purgeable),
 717                            ring_str(err->ring),
 718                            cache_level_str(err->cache_level));
 719
 720                 if (err->name)
 721                         seq_printf(m, " (name: %d)", err->name);
 722                 if (err->fence_reg != I915_FENCE_REG_NONE)
 723                         seq_printf(m, " (fence: %d)", err->fence_reg);
 724
 725                 seq_printf(m, "\n");
 726                 err++;
 727         }
 728 }
 729
 730 static int i915_error_state(struct seq_file *m, void *unused)
 731 {
 732         struct drm_info_node *node = (struct drm_info_node *) m->private;
 733         struct drm_device *dev = node->minor->dev;
 734         drm_i915_private_t *dev_priv = dev->dev_private;
 735         struct drm_i915_error_state *error;
 736         unsigned long flags;
 737         int i, page, offset, elt;
 738
 739         spin_lock_irqsave(&dev_priv->error_lock, flags);
 740         if (!dev_priv->first_error) {
 741                 seq_printf(m, "no error state collected\n");
 742                 goto out;
 743         }
 744
 745         error = dev_priv->first_error;
 746
 747         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 748                    error->time.tv_usec);
 749         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
 750         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 751         seq_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 752         if (INTEL_INFO(dev)->gen >= 6) {
 753                 seq_printf(m, "ERROR: 0x%08x\n", error->error);
 754                 seq_printf(m, "Blitter command stream:\n");
 755                 seq_printf(m, "  ACTHD:    0x%08x\n", error->bcs_acthd);
 756                 seq_printf(m, "  IPEIR:    0x%08x\n", error->bcs_ipeir);
 757                 seq_printf(m, "  IPEHR:    0x%08x\n", error->bcs_ipehr);
 758                 seq_printf(m, "  INSTDONE: 0x%08x\n", error->bcs_instdone);
 759                 seq_printf(m, "  seqno:    0x%08x\n", error->bcs_seqno);
 760                 seq_printf(m, "Video (BSD) command stream:\n");
 761                 seq_printf(m, "  ACTHD:    0x%08x\n", error->vcs_acthd);
 762                 seq_printf(m, "  IPEIR:    0x%08x\n", error->vcs_ipeir);
 763                 seq_printf(m, "  IPEHR:    0x%08x\n", error->vcs_ipehr);
 764                 seq_printf(m, "  INSTDONE: 0x%08x\n", error->vcs_instdone);
 765                 seq_printf(m, "  seqno:    0x%08x\n", error->vcs_seqno);
 766         }
 767         seq_printf(m, "Render command stream:\n");
 768         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd);
 769         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir);
 770         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr);
 771         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone);
 772         if (INTEL_INFO(dev)->gen >= 4) {
 773                 seq_printf(m, "  INSTDONE1: 0x%08x\n", error->instdone1);
 774                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps);
 775         }
 776         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm);
 777         seq_printf(m, "  seqno: 0x%08x\n", error->seqno);
 778
 779         for (i = 0; i < dev_priv->num_fence_regs; i++)
 780                 seq_printf(m, "  fence[%d] = %08llx\n", i, error->fence[i]);
 781
 782         if (error->active_bo)
 783                 print_error_buffers(m, "Active",
 784                                     error->active_bo,
 785                                     error->active_bo_count);
 786
 787         if (error->pinned_bo)
 788                 print_error_buffers(m, "Pinned",
 789                                     error->pinned_bo,
 790                                     error->pinned_bo_count);
 791
 792         for (i = 0; i < ARRAY_SIZE(error->batchbuffer); i++) {
 793                 if (error->batchbuffer[i]) {
 794                         struct drm_i915_error_object *obj = error->batchbuffer[i];
 795
 796                         seq_printf(m, "%s --- gtt_offset = 0x%08x\n",
 797                                    dev_priv->ring[i].name,
 798                                    obj->gtt_offset);
 799                         offset = 0;
 800                         for (page = 0; page < obj->page_count; page++) {
 801                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 802                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 803                                         offset += 4;
 804                                 }
 805                         }
 806                 }
 807         }
 808
 809         for (i = 0; i < ARRAY_SIZE(error->ringbuffer); i++) {
 810                 if (error->ringbuffer[i]) {
 811                         struct drm_i915_error_object *obj = error->ringbuffer[i];
 812                         seq_printf(m, "%s --- ringbuffer = 0x%08x\n",
 813                                    dev_priv->ring[i].name,
 814                                    obj->gtt_offset);
 815                         offset = 0;
 816                         for (page = 0; page < obj->page_count; page++) {
 817                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 818                                         seq_printf(m, "%08x :  %08x\n",
 819                                                    offset,
 820                                                    obj->pages[page][elt]);
 821                                         offset += 4;
 822                                 }
 823                         }
 824                 }
 825         }
 826
 827         if (error->overlay)
 828                 intel_overlay_print_error_state(m, error->overlay);
 829
 830         if (error->display)
 831                 intel_display_print_error_state(m, dev, error->display);
 832
 833 out:
 834         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
 835
 836         return 0;
 837 }
 838
 839 static int i915_rstdby_delays(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         u16 crstanddelay = I915_READ16(CRSTANDVID);
 845
 846         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
 847
 848         return 0;
 849 }
 850
 851 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
 852 {
 853         struct drm_info_node *node = (struct drm_info_node *) m->private;
 854         struct drm_device *dev = node->minor->dev;
 855         drm_i915_private_t *dev_priv = dev->dev_private;
 856         int ret;
 857
 858         if (IS_GEN5(dev)) {
 859                 u16 rgvswctl = I915_READ16(MEMSWCTL);
 860                 u16 rgvstat = I915_READ16(MEMSTAT_ILK);
 861
 862                 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 863                 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
 864                 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 865                            MEMSTAT_VID_SHIFT);
 866                 seq_printf(m, "Current P-state: %d\n",
 867                            (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
 868         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
 869                 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
 870                 u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
 871                 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
 872                 u32 rpstat;
 873                 u32 rpupei, rpcurup, rpprevup;
 874                 u32 rpdownei, rpcurdown, rpprevdown;
 875                 int max_freq;
 876
 877                 /* RPSTAT1 is in the GT power well */
 878                 ret = mutex_lock_interruptible(&dev->struct_mutex);
 879                 if (ret)
 880                         return ret;
 881
 882                 gen6_gt_force_wake_get(dev_priv);
 883
 884                 rpstat = I915_READ(GEN6_RPSTAT1);
 885                 rpupei = I915_READ(GEN6_RP_CUR_UP_EI);
 886                 rpcurup = I915_READ(GEN6_RP_CUR_UP);
 887                 rpprevup = I915_READ(GEN6_RP_PREV_UP);
 888                 rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI);
 889                 rpcurdown = I915_READ(GEN6_RP_CUR_DOWN);
 890                 rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
 891
 892                 gen6_gt_force_wake_put(dev_priv);
 893                 mutex_unlock(&dev->struct_mutex);
 894
 895                 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
 896                 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
 897                 seq_printf(m, "Render p-state ratio: %d\n",
 898                            (gt_perf_status & 0xff00) >> 8);
 899                 seq_printf(m, "Render p-state VID: %d\n",
 900                            gt_perf_status & 0xff);
 901                 seq_printf(m, "Render p-state limit: %d\n",
 902                            rp_state_limits & 0xff);
 903                 seq_printf(m, "CAGF: %dMHz\n", ((rpstat & GEN6_CAGF_MASK) >>
 904                                                 GEN6_CAGF_SHIFT) * 50);
 905                 seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
 906                            GEN6_CURICONT_MASK);
 907                 seq_printf(m, "RP CUR UP: %dus\n", rpcurup &
 908                            GEN6_CURBSYTAVG_MASK);
 909                 seq_printf(m, "RP PREV UP: %dus\n", rpprevup &
 910                            GEN6_CURBSYTAVG_MASK);
 911                 seq_printf(m, "RP CUR DOWN EI: %dus\n", rpdownei &
 912                            GEN6_CURIAVG_MASK);
 913                 seq_printf(m, "RP CUR DOWN: %dus\n", rpcurdown &
 914                            GEN6_CURBSYTAVG_MASK);
 915                 seq_printf(m, "RP PREV DOWN: %dus\n", rpprevdown &
 916                            GEN6_CURBSYTAVG_MASK);
 917
 918                 max_freq = (rp_state_cap & 0xff0000) >> 16;
 919                 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
 920                            max_freq * 50);
 921
 922                 max_freq = (rp_state_cap & 0xff00) >> 8;
 923                 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
 924                            max_freq * 50);
 925
 926                 max_freq = rp_state_cap & 0xff;
 927                 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
 928                            max_freq * 50);
 929         } else {
 930                 seq_printf(m, "no P-state info available\n");
 931         }
 932
 933         return 0;
 934 }
 935
 936 static int i915_delayfreq_table(struct seq_file *m, void *unused)
 937 {
 938         struct drm_info_node *node = (struct drm_info_node *) m->private;
 939         struct drm_device *dev = node->minor->dev;
 940         drm_i915_private_t *dev_priv = dev->dev_private;
 941         u32 delayfreq;
 942         int i;
 943
 944         for (i = 0; i < 16; i++) {
 945                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
 946                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
 947                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
 948         }
 949
 950         return 0;
 951 }
 952
 953 static inline int MAP_TO_MV(int map)
 954 {
 955         return 1250 - (map * 25);
 956 }
 957
 958 static int i915_inttoext_table(struct seq_file *m, void *unused)
 959 {
 960         struct drm_info_node *node = (struct drm_info_node *) m->private;
 961         struct drm_device *dev = node->minor->dev;
 962         drm_i915_private_t *dev_priv = dev->dev_private;
 963         u32 inttoext;
 964         int i;
 965
 966         for (i = 1; i <= 32; i++) {
 967                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
 968                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
 969         }
 970
 971         return 0;
 972 }
 973
 974 static int i915_drpc_info(struct seq_file *m, void *unused)
 975 {
 976         struct drm_info_node *node = (struct drm_info_node *) m->private;
 977         struct drm_device *dev = node->minor->dev;
 978         drm_i915_private_t *dev_priv = dev->dev_private;
 979         u32 rgvmodectl = I915_READ(MEMMODECTL);
 980         u32 rstdbyctl = I915_READ(RSTDBYCTL);
 981         u16 crstandvid = I915_READ16(CRSTANDVID);
 982
 983         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
 984                    "yes" : "no");
 985         seq_printf(m, "Boost freq: %d\n",
 986                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
 987                    MEMMODE_BOOST_FREQ_SHIFT);
 988         seq_printf(m, "HW control enabled: %s\n",
 989                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
 990         seq_printf(m, "SW control enabled: %s\n",
 991                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
 992         seq_printf(m, "Gated voltage change: %s\n",
 993                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
 994         seq_printf(m, "Starting frequency: P%d\n",
 995                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
 996         seq_printf(m, "Max P-state: P%d\n",
 997                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
 998         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
 999         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
1000         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
1001         seq_printf(m, "Render standby enabled: %s\n",
1002                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
1003         seq_printf(m, "Current RS state: ");
1004         switch (rstdbyctl & RSX_STATUS_MASK) {
1005         case RSX_STATUS_ON:
1006                 seq_printf(m, "on\n");
1007                 break;
1008         case RSX_STATUS_RC1:
1009                 seq_printf(m, "RC1\n");
1010                 break;
1011         case RSX_STATUS_RC1E:
1012                 seq_printf(m, "RC1E\n");
1013                 break;
1014         case RSX_STATUS_RS1:
1015                 seq_printf(m, "RS1\n");
1016                 break;
1017         case RSX_STATUS_RS2:
1018                 seq_printf(m, "RS2 (RC6)\n");
1019                 break;
1020         case RSX_STATUS_RS3:
1021                 seq_printf(m, "RC3 (RC6+)\n");
1022                 break;
1023         default:
1024                 seq_printf(m, "unknown\n");
1025                 break;
1026         }
1027
1028         return 0;
1029 }
1030
1031 static int i915_fbc_status(struct seq_file *m, void *unused)
1032 {
1033         struct drm_info_node *node = (struct drm_info_node *) m->private;
1034         struct drm_device *dev = node->minor->dev;
1035         drm_i915_private_t *dev_priv = dev->dev_private;
1036
1037         if (!I915_HAS_FBC(dev)) {
1038                 seq_printf(m, "FBC unsupported on this chipset\n");
1039                 return 0;
1040         }
1041
1042         if (intel_fbc_enabled(dev)) {
1043                 seq_printf(m, "FBC enabled\n");
1044         } else {
1045                 seq_printf(m, "FBC disabled: ");
1046                 switch (dev_priv->no_fbc_reason) {
1047                 case FBC_NO_OUTPUT:
1048                         seq_printf(m, "no outputs");
1049                         break;
1050                 case FBC_STOLEN_TOO_SMALL:
1051                         seq_printf(m, "not enough stolen memory");
1052                         break;
1053                 case FBC_UNSUPPORTED_MODE:
1054                         seq_printf(m, "mode not supported");
1055                         break;
1056                 case FBC_MODE_TOO_LARGE:
1057                         seq_printf(m, "mode too large");
1058                         break;
1059                 case FBC_BAD_PLANE:
1060                         seq_printf(m, "FBC unsupported on plane");
1061                         break;
1062                 case FBC_NOT_TILED:
1063                         seq_printf(m, "scanout buffer not tiled");
1064                         break;
1065                 case FBC_MULTIPLE_PIPES:
1066                         seq_printf(m, "multiple pipes are enabled");
1067                         break;
1068                 case FBC_MODULE_PARAM:
1069                         seq_printf(m, "disabled per module param (default off)");
1070                         break;
1071                 default:
1072                         seq_printf(m, "unknown reason");
1073                 }
1074                 seq_printf(m, "\n");
1075         }
1076         return 0;
1077 }
1078
1079 static int i915_sr_status(struct seq_file *m, void *unused)
1080 {
1081         struct drm_info_node *node = (struct drm_info_node *) m->private;
1082         struct drm_device *dev = node->minor->dev;
1083         drm_i915_private_t *dev_priv = dev->dev_private;
1084         bool sr_enabled = false;
1085
1086         if (HAS_PCH_SPLIT(dev))
1087                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1088         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
1089                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1090         else if (IS_I915GM(dev))
1091                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1092         else if (IS_PINEVIEW(dev))
1093                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1094
1095         seq_printf(m, "self-refresh: %s\n",
1096                    sr_enabled ? "enabled" : "disabled");
1097
1098         return 0;
1099 }
1100
1101 static int i915_emon_status(struct seq_file *m, void *unused)
1102 {
1103         struct drm_info_node *node = (struct drm_info_node *) m->private;
1104         struct drm_device *dev = node->minor->dev;
1105         drm_i915_private_t *dev_priv = dev->dev_private;
1106         unsigned long temp, chipset, gfx;
1107         int ret;
1108
1109         ret = mutex_lock_interruptible(&dev->struct_mutex);
1110         if (ret)
1111                 return ret;
1112
1113         temp = i915_mch_val(dev_priv);
1114         chipset = i915_chipset_val(dev_priv);
1115         gfx = i915_gfx_val(dev_priv);
1116         mutex_unlock(&dev->struct_mutex);
1117
1118         seq_printf(m, "GMCH temp: %ld\n", temp);
1119         seq_printf(m, "Chipset power: %ld\n", chipset);
1120         seq_printf(m, "GFX power: %ld\n", gfx);
1121         seq_printf(m, "Total power: %ld\n", chipset + gfx);
1122
1123         return 0;
1124 }
1125
1126 static int i915_ring_freq_table(struct seq_file *m, void *unused)
1127 {
1128         struct drm_info_node *node = (struct drm_info_node *) m->private;
1129         struct drm_device *dev = node->minor->dev;
1130         drm_i915_private_t *dev_priv = dev->dev_private;
1131         int ret;
1132         int gpu_freq, ia_freq;
1133
1134         if (!(IS_GEN6(dev) || IS_GEN7(dev))) {
1135                 seq_printf(m, "unsupported on this chipset\n");
1136                 return 0;
1137         }
1138
1139         ret = mutex_lock_interruptible(&dev->struct_mutex);
1140         if (ret)
1141                 return ret;
1142
1143         seq_printf(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\n");
1144
1145         for (gpu_freq = dev_priv->min_delay; gpu_freq <= dev_priv->max_delay;
1146              gpu_freq++) {
1147                 I915_WRITE(GEN6_PCODE_DATA, gpu_freq);
1148                 I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY |
1149                            GEN6_PCODE_READ_MIN_FREQ_TABLE);
1150                 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) &
1151                               GEN6_PCODE_READY) == 0, 10)) {
1152                         DRM_ERROR("pcode read of freq table timed out\n");
1153                         continue;
1154                 }
1155                 ia_freq = I915_READ(GEN6_PCODE_DATA);
1156                 seq_printf(m, "%d\t\t%d\n", gpu_freq * 50, ia_freq * 100);
1157         }
1158
1159         mutex_unlock(&dev->struct_mutex);
1160
1161         return 0;
1162 }
1163
1164 static int i915_gfxec(struct seq_file *m, void *unused)
1165 {
1166         struct drm_info_node *node = (struct drm_info_node *) m->private;
1167         struct drm_device *dev = node->minor->dev;
1168         drm_i915_private_t *dev_priv = dev->dev_private;
1169
1170         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
1171
1172         return 0;
1173 }
1174
1175 static int i915_opregion(struct seq_file *m, void *unused)
1176 {
1177         struct drm_info_node *node = (struct drm_info_node *) m->private;
1178         struct drm_device *dev = node->minor->dev;
1179         drm_i915_private_t *dev_priv = dev->dev_private;
1180         struct intel_opregion *opregion = &dev_priv->opregion;
1181         int ret;
1182
1183         ret = mutex_lock_interruptible(&dev->struct_mutex);
1184         if (ret)
1185                 return ret;
1186
1187         if (opregion->header)
1188                 seq_write(m, opregion->header, OPREGION_SIZE);
1189
1190         mutex_unlock(&dev->struct_mutex);
1191
1192         return 0;
1193 }
1194
1195 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
1196 {
1197         struct drm_info_node *node = (struct drm_info_node *) m->private;
1198         struct drm_device *dev = node->minor->dev;
1199         drm_i915_private_t *dev_priv = dev->dev_private;
1200         struct intel_fbdev *ifbdev;
1201         struct intel_framebuffer *fb;
1202         int ret;
1203
1204         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1205         if (ret)
1206                 return ret;
1207
1208         ifbdev = dev_priv->fbdev;
1209         fb = to_intel_framebuffer(ifbdev->helper.fb);
1210
1211         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
1212                    fb->base.width,
1213                    fb->base.height,
1214                    fb->base.depth,
1215                    fb->base.bits_per_pixel);
1216         describe_obj(m, fb->obj);
1217         seq_printf(m, "\n");
1218
1219         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
1220                 if (&fb->base == ifbdev->helper.fb)
1221                         continue;
1222
1223                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
1224                            fb->base.width,
1225                            fb->base.height,
1226                            fb->base.depth,
1227                            fb->base.bits_per_pixel);
1228                 describe_obj(m, fb->obj);
1229                 seq_printf(m, "\n");
1230         }
1231
1232         mutex_unlock(&dev->mode_config.mutex);
1233
1234         return 0;
1235 }
1236
1237 static int i915_context_status(struct seq_file *m, void *unused)
1238 {
1239         struct drm_info_node *node = (struct drm_info_node *) m->private;
1240         struct drm_device *dev = node->minor->dev;
1241         drm_i915_private_t *dev_priv = dev->dev_private;
1242         int ret;
1243
1244         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1245         if (ret)
1246                 return ret;
1247
1248         if (dev_priv->pwrctx) {
1249                 seq_printf(m, "power context ");
1250                 describe_obj(m, dev_priv->pwrctx);
1251                 seq_printf(m, "\n");
1252         }
1253
1254         if (dev_priv->renderctx) {
1255                 seq_printf(m, "render context ");
1256                 describe_obj(m, dev_priv->renderctx);
1257                 seq_printf(m, "\n");
1258         }
1259
1260         mutex_unlock(&dev->mode_config.mutex);
1261
1262         return 0;
1263 }
1264
1265 static int i915_gen6_forcewake_count_info(struct seq_file *m, void *data)
1266 {
1267         struct drm_info_node *node = (struct drm_info_node *) m->private;
1268         struct drm_device *dev = node->minor->dev;
1269         struct drm_i915_private *dev_priv = dev->dev_private;
1270
1271         seq_printf(m, "forcewake count = %d\n",
1272                    atomic_read(&dev_priv->forcewake_count));
1273
1274         return 0;
1275 }
1276
1277 static int
1278 i915_wedged_open(struct inode *inode,
1279                  struct file *filp)
1280 {
1281         filp->private_data = inode->i_private;
1282         return 0;
1283 }
1284
1285 static ssize_t
1286 i915_wedged_read(struct file *filp,
1287                  char __user *ubuf,
1288                  size_t max,
1289                  loff_t *ppos)
1290 {
1291         struct drm_device *dev = filp->private_data;
1292         drm_i915_private_t *dev_priv = dev->dev_private;
1293         char buf[80];
1294         int len;
1295
1296         len = snprintf(buf, sizeof(buf),
1297                        "wedged :  %d\n",
1298                        atomic_read(&dev_priv->mm.wedged));
1299
1300         if (len > sizeof(buf))
1301                 len = sizeof(buf);
1302
1303         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1304 }
1305
1306 static ssize_t
1307 i915_wedged_write(struct file *filp,
1308                   const char __user *ubuf,
1309                   size_t cnt,
1310                   loff_t *ppos)
1311 {
1312         struct drm_device *dev = filp->private_data;
1313         char buf[20];
1314         int val = 1;
1315
1316         if (cnt > 0) {
1317                 if (cnt > sizeof(buf) - 1)
1318                         return -EINVAL;
1319
1320                 if (copy_from_user(buf, ubuf, cnt))
1321                         return -EFAULT;
1322                 buf[cnt] = 0;
1323
1324                 val = simple_strtoul(buf, NULL, 0);
1325         }
1326
1327         DRM_INFO("Manually setting wedged to %d\n", val);
1328         i915_handle_error(dev, val);
1329
1330         return cnt;
1331 }
1332
1333 static const struct file_operations i915_wedged_fops = {
1334         .owner = THIS_MODULE,
1335         .open = i915_wedged_open,
1336         .read = i915_wedged_read,
1337         .write = i915_wedged_write,
1338         .llseek = default_llseek,
1339 };
1340
1341 static int
1342 i915_max_freq_open(struct inode *inode,
1343                    struct file *filp)
1344 {
1345         filp->private_data = inode->i_private;
1346         return 0;
1347 }
1348
1349 static ssize_t
1350 i915_max_freq_read(struct file *filp,
1351                    char __user *ubuf,
1352                    size_t max,
1353                    loff_t *ppos)
1354 {
1355         struct drm_device *dev = filp->private_data;
1356         drm_i915_private_t *dev_priv = dev->dev_private;
1357         char buf[80];
1358         int len;
1359
1360         len = snprintf(buf, sizeof(buf),
1361                        "max freq: %d\n", dev_priv->max_delay * 50);
1362
1363         if (len > sizeof(buf))
1364                 len = sizeof(buf);
1365
1366         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1367 }
1368
1369 static ssize_t
1370 i915_max_freq_write(struct file *filp,
1371                   const char __user *ubuf,
1372                   size_t cnt,
1373                   loff_t *ppos)
1374 {
1375         struct drm_device *dev = filp->private_data;
1376         struct drm_i915_private *dev_priv = dev->dev_private;
1377         char buf[20];
1378         int val = 1;
1379
1380         if (cnt > 0) {
1381                 if (cnt > sizeof(buf) - 1)
1382                         return -EINVAL;
1383
1384                 if (copy_from_user(buf, ubuf, cnt))
1385                         return -EFAULT;
1386                 buf[cnt] = 0;
1387
1388                 val = simple_strtoul(buf, NULL, 0);
1389         }
1390
1391         DRM_DEBUG_DRIVER("Manually setting max freq to %d\n", val);
1392
1393         /*
1394          * Turbo will still be enabled, but won't go above the set value.
1395          */
1396         dev_priv->max_delay = val / 50;
1397
1398         gen6_set_rps(dev, val / 50);
1399
1400         return cnt;
1401 }
1402
1403 static const struct file_operations i915_max_freq_fops = {
1404         .owner = THIS_MODULE,
1405         .open = i915_max_freq_open,
1406         .read = i915_max_freq_read,
1407         .write = i915_max_freq_write,
1408         .llseek = default_llseek,
1409 };
1410
1411 static int
1412 i915_cache_sharing_open(struct inode *inode,
1413                    struct file *filp)
1414 {
1415         filp->private_data = inode->i_private;
1416         return 0;
1417 }
1418
1419 static ssize_t
1420 i915_cache_sharing_read(struct file *filp,
1421                    char __user *ubuf,
1422                    size_t max,
1423                    loff_t *ppos)
1424 {
1425         struct drm_device *dev = filp->private_data;
1426         drm_i915_private_t *dev_priv = dev->dev_private;
1427         char buf[80];
1428         u32 snpcr;
1429         int len;
1430
1431         mutex_lock(&dev_priv->dev->struct_mutex);
1432         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1433         mutex_unlock(&dev_priv->dev->struct_mutex);
1434
1435         len = snprintf(buf, sizeof(buf),
1436                        "%d\n", (snpcr & GEN6_MBC_SNPCR_MASK) >>
1437                        GEN6_MBC_SNPCR_SHIFT);
1438
1439         if (len > sizeof(buf))
1440                 len = sizeof(buf);
1441
1442         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1443 }
1444
1445 static ssize_t
1446 i915_cache_sharing_write(struct file *filp,
1447                   const char __user *ubuf,
1448                   size_t cnt,
1449                   loff_t *ppos)
1450 {
1451         struct drm_device *dev = filp->private_data;
1452         struct drm_i915_private *dev_priv = dev->dev_private;
1453         char buf[20];
1454         u32 snpcr;
1455         int val = 1;
1456
1457         if (cnt > 0) {
1458                 if (cnt > sizeof(buf) - 1)
1459                         return -EINVAL;
1460
1461                 if (copy_from_user(buf, ubuf, cnt))
1462                         return -EFAULT;
1463                 buf[cnt] = 0;
1464
1465                 val = simple_strtoul(buf, NULL, 0);
1466         }
1467
1468         if (val < 0 || val > 3)
1469                 return -EINVAL;
1470
1471         DRM_DEBUG_DRIVER("Manually setting uncore sharing to %d\n", val);
1472
1473         /* Update the cache sharing policy here as well */
1474         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1475         snpcr &= ~GEN6_MBC_SNPCR_MASK;
1476         snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
1477         I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
1478
1479         return cnt;
1480 }
1481
1482 static const struct file_operations i915_cache_sharing_fops = {
1483         .owner = THIS_MODULE,
1484         .open = i915_cache_sharing_open,
1485         .read = i915_cache_sharing_read,
1486         .write = i915_cache_sharing_write,
1487         .llseek = default_llseek,
1488 };
1489
1490 /* As the drm_debugfs_init() routines are called before dev->dev_private is
1491  * allocated we need to hook into the minor for release. */
1492 static int
1493 drm_add_fake_info_node(struct drm_minor *minor,
1494                        struct dentry *ent,
1495                        const void *key)
1496 {
1497         struct drm_info_node *node;
1498
1499         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
1500         if (node == NULL) {
1501                 debugfs_remove(ent);
1502                 return -ENOMEM;
1503         }
1504
1505         node->minor = minor;
1506         node->dent = ent;
1507         node->info_ent = (void *) key;
1508         list_add(&node->list, &minor->debugfs_nodes.list);
1509
1510         return 0;
1511 }
1512
1513 static int i915_wedged_create(struct dentry *root, struct drm_minor *minor)
1514 {
1515         struct drm_device *dev = minor->dev;
1516         struct dentry *ent;
1517
1518         ent = debugfs_create_file("i915_wedged",
1519                                   S_IRUGO | S_IWUSR,
1520                                   root, dev,
1521                                   &i915_wedged_fops);
1522         if (IS_ERR(ent))
1523                 return PTR_ERR(ent);
1524
1525         return drm_add_fake_info_node(minor, ent, &i915_wedged_fops);
1526 }
1527
1528 static int i915_forcewake_open(struct inode *inode, struct file *file)
1529 {
1530         struct drm_device *dev = inode->i_private;
1531         struct drm_i915_private *dev_priv = dev->dev_private;
1532         int ret;
1533
1534         if (!IS_GEN6(dev))
1535                 return 0;
1536
1537         ret = mutex_lock_interruptible(&dev->struct_mutex);
1538         if (ret)
1539                 return ret;
1540         gen6_gt_force_wake_get(dev_priv);
1541         mutex_unlock(&dev->struct_mutex);
1542
1543         return 0;
1544 }
1545
1546 int i915_forcewake_release(struct inode *inode, struct file *file)
1547 {
1548         struct drm_device *dev = inode->i_private;
1549         struct drm_i915_private *dev_priv = dev->dev_private;
1550
1551         if (!IS_GEN6(dev))
1552                 return 0;
1553
1554         /*
1555          * It's bad that we can potentially hang userspace if struct_mutex gets
1556          * forever stuck.  However, if we cannot acquire this lock it means that
1557          * almost certainly the driver has hung, is not unload-able. Therefore
1558          * hanging here is probably a minor inconvenience not to be seen my
1559          * almost every user.
1560          */
1561         mutex_lock(&dev->struct_mutex);
1562         gen6_gt_force_wake_put(dev_priv);
1563         mutex_unlock(&dev->struct_mutex);
1564
1565         return 0;
1566 }
1567
1568 static const struct file_operations i915_forcewake_fops = {
1569         .owner = THIS_MODULE,
1570         .open = i915_forcewake_open,
1571         .release = i915_forcewake_release,
1572 };
1573
1574 static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
1575 {
1576         struct drm_device *dev = minor->dev;
1577         struct dentry *ent;
1578
1579         ent = debugfs_create_file("i915_forcewake_user",
1580                                   S_IRUSR,
1581                                   root, dev,
1582                                   &i915_forcewake_fops);
1583         if (IS_ERR(ent))
1584                 return PTR_ERR(ent);
1585
1586         return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
1587 }
1588
1589 static int i915_max_freq_create(struct dentry *root, struct drm_minor *minor)
1590 {
1591         struct drm_device *dev = minor->dev;
1592         struct dentry *ent;
1593
1594         ent = debugfs_create_file("i915_max_freq",
1595                                   S_IRUGO | S_IWUSR,
1596                                   root, dev,
1597                                   &i915_max_freq_fops);
1598         if (IS_ERR(ent))
1599                 return PTR_ERR(ent);
1600
1601         return drm_add_fake_info_node(minor, ent, &i915_max_freq_fops);
1602 }
1603
1604 static int i915_cache_sharing_create(struct dentry *root, struct drm_minor *minor)
1605 {
1606         struct drm_device *dev = minor->dev;
1607         struct dentry *ent;
1608
1609         ent = debugfs_create_file("i915_cache_sharing",
1610                                   S_IRUGO | S_IWUSR,
1611                                   root, dev,
1612                                   &i915_cache_sharing_fops);
1613         if (IS_ERR(ent))
1614                 return PTR_ERR(ent);
1615
1616         return drm_add_fake_info_node(minor, ent, &i915_cache_sharing_fops);
1617 }
1618
1619 static struct drm_info_list i915_debugfs_list[] = {
1620         {"i915_capabilities", i915_capabilities, 0},
1621         {"i915_gem_objects", i915_gem_object_info, 0},
1622         {"i915_gem_gtt", i915_gem_gtt_info, 0},
1623         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
1624         {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
1625         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
1626         {"i915_gem_pinned", i915_gem_object_list_info, 0, (void *) PINNED_LIST},
1627         {"i915_gem_deferred_free", i915_gem_object_list_info, 0, (void *) DEFERRED_FREE_LIST},
1628         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
1629         {"i915_gem_request", i915_gem_request_info, 0},
1630         {"i915_gem_seqno", i915_gem_seqno_info, 0},
1631         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
1632         {"i915_gem_interrupt", i915_interrupt_info, 0},
1633         {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
1634         {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
1635         {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
1636         {"i915_ringbuffer_data", i915_ringbuffer_data, 0, (void *)RCS},
1637         {"i915_ringbuffer_info", i915_ringbuffer_info, 0, (void *)RCS},
1638         {"i915_bsd_ringbuffer_data", i915_ringbuffer_data, 0, (void *)VCS},
1639         {"i915_bsd_ringbuffer_info", i915_ringbuffer_info, 0, (void *)VCS},
1640         {"i915_blt_ringbuffer_data", i915_ringbuffer_data, 0, (void *)BCS},
1641         {"i915_blt_ringbuffer_info", i915_ringbuffer_info, 0, (void *)BCS},
1642         {"i915_batchbuffers", i915_batchbuffer_info, 0},
1643         {"i915_error_state", i915_error_state, 0},
1644         {"i915_rstdby_delays", i915_rstdby_delays, 0},
1645         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
1646         {"i915_delayfreq_table", i915_delayfreq_table, 0},
1647         {"i915_inttoext_table", i915_inttoext_table, 0},
1648         {"i915_drpc_info", i915_drpc_info, 0},
1649         {"i915_emon_status", i915_emon_status, 0},
1650         {"i915_ring_freq_table", i915_ring_freq_table, 0},
1651         {"i915_gfxec", i915_gfxec, 0},
1652         {"i915_fbc_status", i915_fbc_status, 0},
1653         {"i915_sr_status", i915_sr_status, 0},
1654         {"i915_opregion", i915_opregion, 0},
1655         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
1656         {"i915_context_status", i915_context_status, 0},
1657         {"i915_gen6_forcewake_count", i915_gen6_forcewake_count_info, 0},
1658 };
1659 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
1660
1661 int i915_debugfs_init(struct drm_minor *minor)
1662 {
1663         int ret;
1664
1665         ret = i915_wedged_create(minor->debugfs_root, minor);
1666         if (ret)
1667                 return ret;
1668
1669         ret = i915_forcewake_create(minor->debugfs_root, minor);
1670         if (ret)
1671                 return ret;
1672         ret = i915_max_freq_create(minor->debugfs_root, minor);
1673         if (ret)
1674                 return ret;
1675         ret = i915_cache_sharing_create(minor->debugfs_root, minor);
1676         if (ret)
1677                 return ret;
1678
1679         return drm_debugfs_create_files(i915_debugfs_list,
1680                                         I915_DEBUGFS_ENTRIES,
1681                                         minor->debugfs_root, minor);
1682 }
1683
1684 void i915_debugfs_cleanup(struct drm_minor *minor)
1685 {
1686         drm_debugfs_remove_files(i915_debugfs_list,
1687                                  I915_DEBUGFS_ENTRIES, minor);
1688         drm_debugfs_remove_files((struct drm_info_list *) &i915_forcewake_fops,
1689                                  1, minor);
1690         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
1691                                  1, minor);
1692         drm_debugfs_remove_files((struct drm_info_list *) &i915_max_freq_fops,
1693                                  1, minor);
1694         drm_debugfs_remove_files((struct drm_info_list *) &i915_cache_sharing_fops,
1695                                  1, minor);
1696 }
1697
1698 #endif /* CONFIG_DEBUG_FS */