drivers/gpu/drm/i915/i915_debugfs.c

   1 /*
   2  * Copyright © 2008 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *    Eric Anholt <eric@anholt.net>
  25  *    Keith Packard <keithp@keithp.com>
  26  *
  27  */
  28
  29 #include <linux/seq_file.h>
  30 #include <linux/debugfs.h>
  31 #include <linux/slab.h>
  32 #include <linux/export.h>
  33 #include "drmP.h"
  34 #include "drm.h"
  35 #include "intel_drv.h"
  36 #include "intel_ringbuffer.h"
  37 #include "i915_drm.h"
  38 #include "i915_drv.h"
  39
  40 #define DRM_I915_RING_DEBUG 1
  41
  42
  43 #if defined(CONFIG_DEBUG_FS)
  44
  45 enum {
  46         ACTIVE_LIST,
  47         FLUSHING_LIST,
  48         INACTIVE_LIST,
  49         PINNED_LIST,
  50         DEFERRED_FREE_LIST,
  51 };
  52
  53 static const char *yesno(int v)
  54 {
  55         return v ? "yes" : "no";
  56 }
  57
  58 static int i915_capabilities(struct seq_file *m, void *data)
  59 {
  60         struct drm_info_node *node = (struct drm_info_node *) m->private;
  61         struct drm_device *dev = node->minor->dev;
  62         const struct intel_device_info *info = INTEL_INFO(dev);
  63
  64         seq_printf(m, "gen: %d\n", info->gen);
  65         seq_printf(m, "pch: %d\n", INTEL_PCH_TYPE(dev));
  66 #define B(x) seq_printf(m, #x ": %s\n", yesno(info->x))
  67         B(is_mobile);
  68         B(is_i85x);
  69         B(is_i915g);
  70         B(is_i945gm);
  71         B(is_g33);
  72         B(need_gfx_hws);
  73         B(is_g4x);
  74         B(is_pineview);
  75         B(is_broadwater);
  76         B(is_crestline);
  77         B(has_fbc);
  78         B(has_pipe_cxsr);
  79         B(has_hotplug);
  80         B(cursor_needs_physical);
  81         B(has_overlay);
  82         B(overlay_needs_physical);
  83         B(supports_tv);
  84         B(has_bsd_ring);
  85         B(has_blt_ring);
  86         B(has_llc);
  87 #undef B
  88
  89         return 0;
  90 }
  91
  92 static const char *get_pin_flag(struct drm_i915_gem_object *obj)
  93 {
  94         if (obj->user_pin_count > 0)
  95                 return "P";
  96         else if (obj->pin_count > 0)
  97                 return "p";
  98         else
  99                 return " ";
 100 }
 101
 102 static const char *get_tiling_flag(struct drm_i915_gem_object *obj)
 103 {
 104         switch (obj->tiling_mode) {
 105         default:
 106         case I915_TILING_NONE: return " ";
 107         case I915_TILING_X: return "X";
 108         case I915_TILING_Y: return "Y";
 109         }
 110 }
 111
 112 static const char *cache_level_str(int type)
 113 {
 114         switch (type) {
 115         case I915_CACHE_NONE: return " uncached";
 116         case I915_CACHE_LLC: return " snooped (LLC)";
 117         case I915_CACHE_LLC_MLC: return " snooped (LLC+MLC)";
 118         default: return "";
 119         }
 120 }
 121
 122 static void
 123 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 124 {
 125         seq_printf(m, "%p: %s%s %8zd %04x %04x %d %d%s%s%s",
 126                    &obj->base,
 127                    get_pin_flag(obj),
 128                    get_tiling_flag(obj),
 129                    obj->base.size,
 130                    obj->base.read_domains,
 131                    obj->base.write_domain,
 132                    obj->last_rendering_seqno,
 133                    obj->last_fenced_seqno,
 134                    cache_level_str(obj->cache_level),
 135                    obj->dirty ? " dirty" : "",
 136                    obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
 137         if (obj->base.name)
 138                 seq_printf(m, " (name: %d)", obj->base.name);
 139         if (obj->fence_reg != I915_FENCE_REG_NONE)
 140                 seq_printf(m, " (fence: %d)", obj->fence_reg);
 141         if (obj->gtt_space != NULL)
 142                 seq_printf(m, " (gtt offset: %08x, size: %08x)",
 143                            obj->gtt_offset, (unsigned int)obj->gtt_space->size);
 144         if (obj->pin_mappable || obj->fault_mappable) {
 145                 char s[3], *t = s;
 146                 if (obj->pin_mappable)
 147                         *t++ = 'p';
 148                 if (obj->fault_mappable)
 149                         *t++ = 'f';
 150                 *t = '\0';
 151                 seq_printf(m, " (%s mappable)", s);
 152         }
 153         if (obj->ring != NULL)
 154                 seq_printf(m, " (%s)", obj->ring->name);
 155 }
 156
 157 static int i915_gem_object_list_info(struct seq_file *m, void *data)
 158 {
 159         struct drm_info_node *node = (struct drm_info_node *) m->private;
 160         uintptr_t list = (uintptr_t) node->info_ent->data;
 161         struct list_head *head;
 162         struct drm_device *dev = node->minor->dev;
 163         drm_i915_private_t *dev_priv = dev->dev_private;
 164         struct drm_i915_gem_object *obj;
 165         size_t total_obj_size, total_gtt_size;
 166         int count, ret;
 167
 168         ret = mutex_lock_interruptible(&dev->struct_mutex);
 169         if (ret)
 170                 return ret;
 171
 172         switch (list) {
 173         case ACTIVE_LIST:
 174                 seq_printf(m, "Active:\n");
 175                 head = &dev_priv->mm.active_list;
 176                 break;
 177         case INACTIVE_LIST:
 178                 seq_printf(m, "Inactive:\n");
 179                 head = &dev_priv->mm.inactive_list;
 180                 break;
 181         case PINNED_LIST:
 182                 seq_printf(m, "Pinned:\n");
 183                 head = &dev_priv->mm.pinned_list;
 184                 break;
 185         case FLUSHING_LIST:
 186                 seq_printf(m, "Flushing:\n");
 187                 head = &dev_priv->mm.flushing_list;
 188                 break;
 189         case DEFERRED_FREE_LIST:
 190                 seq_printf(m, "Deferred free:\n");
 191                 head = &dev_priv->mm.deferred_free_list;
 192                 break;
 193         default:
 194                 mutex_unlock(&dev->struct_mutex);
 195                 return -EINVAL;
 196         }
 197
 198         total_obj_size = total_gtt_size = count = 0;
 199         list_for_each_entry(obj, head, mm_list) {
 200                 seq_printf(m, "   ");
 201                 describe_obj(m, obj);
 202                 seq_printf(m, "\n");
 203                 total_obj_size += obj->base.size;
 204                 total_gtt_size += obj->gtt_space->size;
 205                 count++;
 206         }
 207         mutex_unlock(&dev->struct_mutex);
 208
 209         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 210                    count, total_obj_size, total_gtt_size);
 211         return 0;
 212 }
 213
 214 #define count_objects(list, member) do { \
 215         list_for_each_entry(obj, list, member) { \
 216                 size += obj->gtt_space->size; \
 217                 ++count; \
 218                 if (obj->map_and_fenceable) { \
 219                         mappable_size += obj->gtt_space->size; \
 220                         ++mappable_count; \
 221                 } \
 222         } \
 223 } while (0)
 224
 225 static int i915_gem_object_info(struct seq_file *m, void* data)
 226 {
 227         struct drm_info_node *node = (struct drm_info_node *) m->private;
 228         struct drm_device *dev = node->minor->dev;
 229         struct drm_i915_private *dev_priv = dev->dev_private;
 230         u32 count, mappable_count;
 231         size_t size, mappable_size;
 232         struct drm_i915_gem_object *obj;
 233         int ret;
 234
 235         ret = mutex_lock_interruptible(&dev->struct_mutex);
 236         if (ret)
 237                 return ret;
 238
 239         seq_printf(m, "%u objects, %zu bytes\n",
 240                    dev_priv->mm.object_count,
 241                    dev_priv->mm.object_memory);
 242
 243         size = count = mappable_size = mappable_count = 0;
 244         count_objects(&dev_priv->mm.gtt_list, gtt_list);
 245         seq_printf(m, "%u [%u] objects, %zu [%zu] bytes in gtt\n",
 246                    count, mappable_count, size, mappable_size);
 247
 248         size = count = mappable_size = mappable_count = 0;
 249         count_objects(&dev_priv->mm.active_list, mm_list);
 250         count_objects(&dev_priv->mm.flushing_list, mm_list);
 251         seq_printf(m, "  %u [%u] active objects, %zu [%zu] bytes\n",
 252                    count, mappable_count, size, mappable_size);
 253
 254         size = count = mappable_size = mappable_count = 0;
 255         count_objects(&dev_priv->mm.pinned_list, mm_list);
 256         seq_printf(m, "  %u [%u] pinned objects, %zu [%zu] bytes\n",
 257                    count, mappable_count, size, mappable_size);
 258
 259         size = count = mappable_size = mappable_count = 0;
 260         count_objects(&dev_priv->mm.inactive_list, mm_list);
 261         seq_printf(m, "  %u [%u] inactive objects, %zu [%zu] bytes\n",
 262                    count, mappable_count, size, mappable_size);
 263
 264         size = count = mappable_size = mappable_count = 0;
 265         count_objects(&dev_priv->mm.deferred_free_list, mm_list);
 266         seq_printf(m, "  %u [%u] freed objects, %zu [%zu] bytes\n",
 267                    count, mappable_count, size, mappable_size);
 268
 269         size = count = mappable_size = mappable_count = 0;
 270         list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
 271                 if (obj->fault_mappable) {
 272                         size += obj->gtt_space->size;
 273                         ++count;
 274                 }
 275                 if (obj->pin_mappable) {
 276                         mappable_size += obj->gtt_space->size;
 277                         ++mappable_count;
 278                 }
 279         }
 280         seq_printf(m, "%u pinned mappable objects, %zu bytes\n",
 281                    mappable_count, mappable_size);
 282         seq_printf(m, "%u fault mappable objects, %zu bytes\n",
 283                    count, size);
 284
 285         seq_printf(m, "%zu [%zu] gtt total\n",
 286                    dev_priv->mm.gtt_total, dev_priv->mm.mappable_gtt_total);
 287
 288         mutex_unlock(&dev->struct_mutex);
 289
 290         return 0;
 291 }
 292
 293 static int i915_gem_gtt_info(struct seq_file *m, void* data)
 294 {
 295         struct drm_info_node *node = (struct drm_info_node *) m->private;
 296         struct drm_device *dev = node->minor->dev;
 297         struct drm_i915_private *dev_priv = dev->dev_private;
 298         struct drm_i915_gem_object *obj;
 299         size_t total_obj_size, total_gtt_size;
 300         int count, ret;
 301
 302         ret = mutex_lock_interruptible(&dev->struct_mutex);
 303         if (ret)
 304                 return ret;
 305
 306         total_obj_size = total_gtt_size = count = 0;
 307         list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
 308                 seq_printf(m, "   ");
 309                 describe_obj(m, obj);
 310                 seq_printf(m, "\n");
 311                 total_obj_size += obj->base.size;
 312                 total_gtt_size += obj->gtt_space->size;
 313                 count++;
 314         }
 315
 316         mutex_unlock(&dev->struct_mutex);
 317
 318         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 319                    count, total_obj_size, total_gtt_size);
 320
 321         return 0;
 322 }
 323
 324
 325 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
 326 {
 327         struct drm_info_node *node = (struct drm_info_node *) m->private;
 328         struct drm_device *dev = node->minor->dev;
 329         unsigned long flags;
 330         struct intel_crtc *crtc;
 331
 332         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
 333                 const char pipe = pipe_name(crtc->pipe);
 334                 const char plane = plane_name(crtc->plane);
 335                 struct intel_unpin_work *work;
 336
 337                 spin_lock_irqsave(&dev->event_lock, flags);
 338                 work = crtc->unpin_work;
 339                 if (work == NULL) {
 340                         seq_printf(m, "No flip due on pipe %c (plane %c)\n",
 341                                    pipe, plane);
 342                 } else {
 343                         if (!work->pending) {
 344                                 seq_printf(m, "Flip queued on pipe %c (plane %c)\n",
 345                                            pipe, plane);
 346                         } else {
 347                                 seq_printf(m, "Flip pending (waiting for vsync) on pipe %c (plane %c)\n",
 348                                            pipe, plane);
 349                         }
 350                         if (work->enable_stall_check)
 351                                 seq_printf(m, "Stall check enabled, ");
 352                         else
 353                                 seq_printf(m, "Stall check waiting for page flip ioctl, ");
 354                         seq_printf(m, "%d prepares\n", work->pending);
 355
 356                         if (work->old_fb_obj) {
 357                                 struct drm_i915_gem_object *obj = work->old_fb_obj;
 358                                 if (obj)
 359                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 360                         }
 361                         if (work->pending_flip_obj) {
 362                                 struct drm_i915_gem_object *obj = work->pending_flip_obj;
 363                                 if (obj)
 364                                         seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 365                         }
 366                 }
 367                 spin_unlock_irqrestore(&dev->event_lock, flags);
 368         }
 369
 370         return 0;
 371 }
 372
 373 static int i915_gem_request_info(struct seq_file *m, void *data)
 374 {
 375         struct drm_info_node *node = (struct drm_info_node *) m->private;
 376         struct drm_device *dev = node->minor->dev;
 377         drm_i915_private_t *dev_priv = dev->dev_private;
 378         struct drm_i915_gem_request *gem_request;
 379         int ret, count;
 380
 381         ret = mutex_lock_interruptible(&dev->struct_mutex);
 382         if (ret)
 383                 return ret;
 384
 385         count = 0;
 386         if (!list_empty(&dev_priv->ring[RCS].request_list)) {
 387                 seq_printf(m, "Render requests:\n");
 388                 list_for_each_entry(gem_request,
 389                                     &dev_priv->ring[RCS].request_list,
 390                                     list) {
 391                         seq_printf(m, "    %d @ %d\n",
 392                                    gem_request->seqno,
 393                                    (int) (jiffies - gem_request->emitted_jiffies));
 394                 }
 395                 count++;
 396         }
 397         if (!list_empty(&dev_priv->ring[VCS].request_list)) {
 398                 seq_printf(m, "BSD requests:\n");
 399                 list_for_each_entry(gem_request,
 400                                     &dev_priv->ring[VCS].request_list,
 401                                     list) {
 402                         seq_printf(m, "    %d @ %d\n",
 403                                    gem_request->seqno,
 404                                    (int) (jiffies - gem_request->emitted_jiffies));
 405                 }
 406                 count++;
 407         }
 408         if (!list_empty(&dev_priv->ring[BCS].request_list)) {
 409                 seq_printf(m, "BLT requests:\n");
 410                 list_for_each_entry(gem_request,
 411                                     &dev_priv->ring[BCS].request_list,
 412                                     list) {
 413                         seq_printf(m, "    %d @ %d\n",
 414                                    gem_request->seqno,
 415                                    (int) (jiffies - gem_request->emitted_jiffies));
 416                 }
 417                 count++;
 418         }
 419         mutex_unlock(&dev->struct_mutex);
 420
 421         if (count == 0)
 422                 seq_printf(m, "No requests\n");
 423
 424         return 0;
 425 }
 426
 427 static void i915_ring_seqno_info(struct seq_file *m,
 428                                  struct intel_ring_buffer *ring)
 429 {
 430         if (ring->get_seqno) {
 431                 seq_printf(m, "Current sequence (%s): %d\n",
 432                            ring->name, ring->get_seqno(ring));
 433                 seq_printf(m, "Waiter sequence (%s):  %d\n",
 434                            ring->name, ring->waiting_seqno);
 435                 seq_printf(m, "IRQ sequence (%s):     %d\n",
 436                            ring->name, ring->irq_seqno);
 437         }
 438 }
 439
 440 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 441 {
 442         struct drm_info_node *node = (struct drm_info_node *) m->private;
 443         struct drm_device *dev = node->minor->dev;
 444         drm_i915_private_t *dev_priv = dev->dev_private;
 445         int ret, i;
 446
 447         ret = mutex_lock_interruptible(&dev->struct_mutex);
 448         if (ret)
 449                 return ret;
 450
 451         for (i = 0; i < I915_NUM_RINGS; i++)
 452                 i915_ring_seqno_info(m, &dev_priv->ring[i]);
 453
 454         mutex_unlock(&dev->struct_mutex);
 455
 456         return 0;
 457 }
 458
 459
 460 static int i915_interrupt_info(struct seq_file *m, void *data)
 461 {
 462         struct drm_info_node *node = (struct drm_info_node *) m->private;
 463         struct drm_device *dev = node->minor->dev;
 464         drm_i915_private_t *dev_priv = dev->dev_private;
 465         int ret, i, pipe;
 466
 467         ret = mutex_lock_interruptible(&dev->struct_mutex);
 468         if (ret)
 469                 return ret;
 470
 471         if (!HAS_PCH_SPLIT(dev)) {
 472                 seq_printf(m, "Interrupt enable:    %08x\n",
 473                            I915_READ(IER));
 474                 seq_printf(m, "Interrupt identity:  %08x\n",
 475                            I915_READ(IIR));
 476                 seq_printf(m, "Interrupt mask:      %08x\n",
 477                            I915_READ(IMR));
 478                 for_each_pipe(pipe)
 479                         seq_printf(m, "Pipe %c stat:         %08x\n",
 480                                    pipe_name(pipe),
 481                                    I915_READ(PIPESTAT(pipe)));
 482         } else {
 483                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
 484                            I915_READ(DEIER));
 485                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
 486                            I915_READ(DEIIR));
 487                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
 488                            I915_READ(DEIMR));
 489                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
 490                            I915_READ(SDEIER));
 491                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
 492                            I915_READ(SDEIIR));
 493                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
 494                            I915_READ(SDEIMR));
 495                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
 496                            I915_READ(GTIER));
 497                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
 498                            I915_READ(GTIIR));
 499                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
 500                            I915_READ(GTIMR));
 501         }
 502         seq_printf(m, "Interrupts received: %d\n",
 503                    atomic_read(&dev_priv->irq_received));
 504         for (i = 0; i < I915_NUM_RINGS; i++) {
 505                 if (IS_GEN6(dev) || IS_GEN7(dev)) {
 506                         seq_printf(m, "Graphics Interrupt mask (%s):    %08x\n",
 507                                    dev_priv->ring[i].name,
 508                                    I915_READ_IMR(&dev_priv->ring[i]));
 509                 }
 510                 i915_ring_seqno_info(m, &dev_priv->ring[i]);
 511         }
 512         mutex_unlock(&dev->struct_mutex);
 513
 514         return 0;
 515 }
 516
 517 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 518 {
 519         struct drm_info_node *node = (struct drm_info_node *) m->private;
 520         struct drm_device *dev = node->minor->dev;
 521         drm_i915_private_t *dev_priv = dev->dev_private;
 522         int i, ret;
 523
 524         ret = mutex_lock_interruptible(&dev->struct_mutex);
 525         if (ret)
 526                 return ret;
 527
 528         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 529         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 530         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 531                 struct drm_i915_gem_object *obj = dev_priv->fence_regs[i].obj;
 532
 533                 seq_printf(m, "Fenced object[%2d] = ", i);
 534                 if (obj == NULL)
 535                         seq_printf(m, "unused");
 536                 else
 537                         describe_obj(m, obj);
 538                 seq_printf(m, "\n");
 539         }
 540
 541         mutex_unlock(&dev->struct_mutex);
 542         return 0;
 543 }
 544
 545 static int i915_hws_info(struct seq_file *m, void *data)
 546 {
 547         struct drm_info_node *node = (struct drm_info_node *) m->private;
 548         struct drm_device *dev = node->minor->dev;
 549         drm_i915_private_t *dev_priv = dev->dev_private;
 550         struct intel_ring_buffer *ring;
 551         const volatile u32 __iomem *hws;
 552         int i;
 553
 554         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 555         hws = (volatile u32 __iomem *)ring->status_page.page_addr;
 556         if (hws == NULL)
 557                 return 0;
 558
 559         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 560                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 561                            i * 4,
 562                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 563         }
 564         return 0;
 565 }
 566
 567 static int i915_ringbuffer_data(struct seq_file *m, void *data)
 568 {
 569         struct drm_info_node *node = (struct drm_info_node *) m->private;
 570         struct drm_device *dev = node->minor->dev;
 571         drm_i915_private_t *dev_priv = dev->dev_private;
 572         struct intel_ring_buffer *ring;
 573         int ret;
 574
 575         ret = mutex_lock_interruptible(&dev->struct_mutex);
 576         if (ret)
 577                 return ret;
 578
 579         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 580         if (!ring->obj) {
 581                 seq_printf(m, "No ringbuffer setup\n");
 582         } else {
 583                 const u8 __iomem *virt = ring->virtual_start;
 584                 uint32_t off;
 585
 586                 for (off = 0; off < ring->size; off += 4) {
 587                         uint32_t *ptr = (uint32_t *)(virt + off);
 588                         seq_printf(m, "%08x :  %08x\n", off, *ptr);
 589                 }
 590         }
 591         mutex_unlock(&dev->struct_mutex);
 592
 593         return 0;
 594 }
 595
 596 static int i915_ringbuffer_info(struct seq_file *m, void *data)
 597 {
 598         struct drm_info_node *node = (struct drm_info_node *) m->private;
 599         struct drm_device *dev = node->minor->dev;
 600         drm_i915_private_t *dev_priv = dev->dev_private;
 601         struct intel_ring_buffer *ring;
 602         int ret;
 603
 604         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 605         if (ring->size == 0)
 606                 return 0;
 607
 608         ret = mutex_lock_interruptible(&dev->struct_mutex);
 609         if (ret)
 610                 return ret;
 611
 612         seq_printf(m, "Ring %s:\n", ring->name);
 613         seq_printf(m, "  Head :    %08x\n", I915_READ_HEAD(ring) & HEAD_ADDR);
 614         seq_printf(m, "  Tail :    %08x\n", I915_READ_TAIL(ring) & TAIL_ADDR);
 615         seq_printf(m, "  Size :    %08x\n", ring->size);
 616         seq_printf(m, "  Active :  %08x\n", intel_ring_get_active_head(ring));
 617         seq_printf(m, "  NOPID :   %08x\n", I915_READ_NOPID(ring));
 618         if (IS_GEN6(dev)) {
 619                 seq_printf(m, "  Sync 0 :   %08x\n", I915_READ_SYNC_0(ring));
 620                 seq_printf(m, "  Sync 1 :   %08x\n", I915_READ_SYNC_1(ring));
 621         }
 622         seq_printf(m, "  Control : %08x\n", I915_READ_CTL(ring));
 623         seq_printf(m, "  Start :   %08x\n", I915_READ_START(ring));
 624
 625         mutex_unlock(&dev->struct_mutex);
 626
 627         return 0;
 628 }
 629
 630 static const char *ring_str(int ring)
 631 {
 632         switch (ring) {
 633         case RCS: return "render";
 634         case VCS: return "bsd";
 635         case BCS: return "blt";
 636         default: return "";
 637         }
 638 }
 639
 640 static const char *pin_flag(int pinned)
 641 {
 642         if (pinned > 0)
 643                 return " P";
 644         else if (pinned < 0)
 645                 return " p";
 646         else
 647                 return "";
 648 }
 649
 650 static const char *tiling_flag(int tiling)
 651 {
 652         switch (tiling) {
 653         default:
 654         case I915_TILING_NONE: return "";
 655         case I915_TILING_X: return " X";
 656         case I915_TILING_Y: return " Y";
 657         }
 658 }
 659
 660 static const char *dirty_flag(int dirty)
 661 {
 662         return dirty ? " dirty" : "";
 663 }
 664
 665 static const char *purgeable_flag(int purgeable)
 666 {
 667         return purgeable ? " purgeable" : "";
 668 }
 669
 670 static void print_error_buffers(struct seq_file *m,
 671                                 const char *name,
 672                                 struct drm_i915_error_buffer *err,
 673                                 int count)
 674 {
 675         seq_printf(m, "%s [%d]:\n", name, count);
 676
 677         while (count--) {
 678                 seq_printf(m, "  %08x %8u %04x %04x %08x%s%s%s%s%s%s%s",
 679                            err->gtt_offset,
 680                            err->size,
 681                            err->read_domains,
 682                            err->write_domain,
 683                            err->seqno,
 684                            pin_flag(err->pinned),
 685                            tiling_flag(err->tiling),
 686                            dirty_flag(err->dirty),
 687                            purgeable_flag(err->purgeable),
 688                            err->ring != -1 ? " " : "",
 689                            ring_str(err->ring),
 690                            cache_level_str(err->cache_level));
 691
 692                 if (err->name)
 693                         seq_printf(m, " (name: %d)", err->name);
 694                 if (err->fence_reg != I915_FENCE_REG_NONE)
 695                         seq_printf(m, " (fence: %d)", err->fence_reg);
 696
 697                 seq_printf(m, "\n");
 698                 err++;
 699         }
 700 }
 701
 702 static void i915_ring_error_state(struct seq_file *m,
 703                                   struct drm_device *dev,
 704                                   struct drm_i915_error_state *error,
 705                                   unsigned ring)
 706 {
 707         seq_printf(m, "%s command stream:\n", ring_str(ring));
 708         seq_printf(m, "  HEAD: 0x%08x\n", error->head[ring]);
 709         seq_printf(m, "  TAIL: 0x%08x\n", error->tail[ring]);
 710         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd[ring]);
 711         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir[ring]);
 712         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr[ring]);
 713         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone[ring]);
 714         if (ring == RCS && INTEL_INFO(dev)->gen >= 4) {
 715                 seq_printf(m, "  INSTDONE1: 0x%08x\n", error->instdone1);
 716                 seq_printf(m, "  BBADDR: 0x%08llx\n", error->bbaddr);
 717         }
 718         if (INTEL_INFO(dev)->gen >= 4)
 719                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps[ring]);
 720         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm[ring]);
 721         if (INTEL_INFO(dev)->gen >= 6)
 722                 seq_printf(m, "  FADDR: 0x%08x\n", error->faddr[ring]);
 723         seq_printf(m, "  seqno: 0x%08x\n", error->seqno[ring]);
 724 }
 725
 726 static int i915_error_state(struct seq_file *m, void *unused)
 727 {
 728         struct drm_info_node *node = (struct drm_info_node *) m->private;
 729         struct drm_device *dev = node->minor->dev;
 730         drm_i915_private_t *dev_priv = dev->dev_private;
 731         struct drm_i915_error_state *error;
 732         unsigned long flags;
 733         int i, page, offset, elt;
 734
 735         spin_lock_irqsave(&dev_priv->error_lock, flags);
 736         if (!dev_priv->first_error) {
 737                 seq_printf(m, "no error state collected\n");
 738                 goto out;
 739         }
 740
 741         error = dev_priv->first_error;
 742
 743         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 744                    error->time.tv_usec);
 745         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
 746         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 747         seq_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 748
 749         for (i = 0; i < dev_priv->num_fence_regs; i++)
 750                 seq_printf(m, "  fence[%d] = %08llx\n", i, error->fence[i]);
 751
 752         if (INTEL_INFO(dev)->gen >= 6)
 753                 seq_printf(m, "ERROR: 0x%08x\n", error->error);
 754
 755         i915_ring_error_state(m, dev, error, RCS);
 756         if (HAS_BLT(dev))
 757                 i915_ring_error_state(m, dev, error, BCS);
 758         if (HAS_BSD(dev))
 759                 i915_ring_error_state(m, dev, error, VCS);
 760
 761         if (error->active_bo)
 762                 print_error_buffers(m, "Active",
 763                                     error->active_bo,
 764                                     error->active_bo_count);
 765
 766         if (error->pinned_bo)
 767                 print_error_buffers(m, "Pinned",
 768                                     error->pinned_bo,
 769                                     error->pinned_bo_count);
 770
 771         for (i = 0; i < ARRAY_SIZE(error->batchbuffer); i++) {
 772                 if (error->batchbuffer[i]) {
 773                         struct drm_i915_error_object *obj = error->batchbuffer[i];
 774
 775                         seq_printf(m, "%s --- gtt_offset = 0x%08x\n",
 776                                    dev_priv->ring[i].name,
 777                                    obj->gtt_offset);
 778                         offset = 0;
 779                         for (page = 0; page < obj->page_count; page++) {
 780                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 781                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 782                                         offset += 4;
 783                                 }
 784                         }
 785                 }
 786         }
 787
 788         for (i = 0; i < ARRAY_SIZE(error->ringbuffer); i++) {
 789                 if (error->ringbuffer[i]) {
 790                         struct drm_i915_error_object *obj = error->ringbuffer[i];
 791                         seq_printf(m, "%s --- ringbuffer = 0x%08x\n",
 792                                    dev_priv->ring[i].name,
 793                                    obj->gtt_offset);
 794                         offset = 0;
 795                         for (page = 0; page < obj->page_count; page++) {
 796                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 797                                         seq_printf(m, "%08x :  %08x\n",
 798                                                    offset,
 799                                                    obj->pages[page][elt]);
 800                                         offset += 4;
 801                                 }
 802                         }
 803                 }
 804         }
 805
 806         if (error->overlay)
 807                 intel_overlay_print_error_state(m, error->overlay);
 808
 809         if (error->display)
 810                 intel_display_print_error_state(m, dev, error->display);
 811
 812 out:
 813         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
 814
 815         return 0;
 816 }
 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)) {
 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;
 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
 880                 gen6_gt_force_wake_put(dev_priv);
 881                 mutex_unlock(&dev->struct_mutex);
 882
 883                 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
 884                 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
 885                 seq_printf(m, "Render p-state ratio: %d\n",
 886                            (gt_perf_status & 0xff00) >> 8);
 887                 seq_printf(m, "Render p-state VID: %d\n",
 888                            gt_perf_status & 0xff);
 889                 seq_printf(m, "Render p-state limit: %d\n",
 890                            rp_state_limits & 0xff);
 891                 seq_printf(m, "CAGF: %dMHz\n", ((rpstat & GEN6_CAGF_MASK) >>
 892                                                 GEN6_CAGF_SHIFT) * 50);
 893                 seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
 894                            GEN6_CURICONT_MASK);
 895                 seq_printf(m, "RP CUR UP: %dus\n", rpcurup &
 896                            GEN6_CURBSYTAVG_MASK);
 897                 seq_printf(m, "RP PREV UP: %dus\n", rpprevup &
 898                            GEN6_CURBSYTAVG_MASK);
 899                 seq_printf(m, "RP CUR DOWN EI: %dus\n", rpdownei &
 900                            GEN6_CURIAVG_MASK);
 901                 seq_printf(m, "RP CUR DOWN: %dus\n", rpcurdown &
 902                            GEN6_CURBSYTAVG_MASK);
 903                 seq_printf(m, "RP PREV DOWN: %dus\n", rpprevdown &
 904                            GEN6_CURBSYTAVG_MASK);
 905
 906                 max_freq = (rp_state_cap & 0xff0000) >> 16;
 907                 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
 908                            max_freq * 50);
 909
 910                 max_freq = (rp_state_cap & 0xff00) >> 8;
 911                 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
 912                            max_freq * 50);
 913
 914                 max_freq = rp_state_cap & 0xff;
 915                 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
 916                            max_freq * 50);
 917         } else {
 918                 seq_printf(m, "no P-state info available\n");
 919         }
 920
 921         return 0;
 922 }
 923
 924 static int i915_delayfreq_table(struct seq_file *m, void *unused)
 925 {
 926         struct drm_info_node *node = (struct drm_info_node *) m->private;
 927         struct drm_device *dev = node->minor->dev;
 928         drm_i915_private_t *dev_priv = dev->dev_private;
 929         u32 delayfreq;
 930         int ret, i;
 931
 932         ret = mutex_lock_interruptible(&dev->struct_mutex);
 933         if (ret)
 934                 return ret;
 935
 936         for (i = 0; i < 16; i++) {
 937                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
 938                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
 939                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
 940         }
 941
 942         mutex_unlock(&dev->struct_mutex);
 943
 944         return 0;
 945 }
 946
 947 static inline int MAP_TO_MV(int map)
 948 {
 949         return 1250 - (map * 25);
 950 }
 951
 952 static int i915_inttoext_table(struct seq_file *m, void *unused)
 953 {
 954         struct drm_info_node *node = (struct drm_info_node *) m->private;
 955         struct drm_device *dev = node->minor->dev;
 956         drm_i915_private_t *dev_priv = dev->dev_private;
 957         u32 inttoext;
 958         int ret, i;
 959
 960         ret = mutex_lock_interruptible(&dev->struct_mutex);
 961         if (ret)
 962                 return ret;
 963
 964         for (i = 1; i <= 32; i++) {
 965                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
 966                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
 967         }
 968
 969         mutex_unlock(&dev->struct_mutex);
 970
 971         return 0;
 972 }
 973
 974 static int ironlake_drpc_info(struct seq_file *m)
 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, rstdbyctl;
 980         u16 crstandvid;
 981         int ret;
 982
 983         ret = mutex_lock_interruptible(&dev->struct_mutex);
 984         if (ret)
 985                 return ret;
 986
 987         rgvmodectl = I915_READ(MEMMODECTL);
 988         rstdbyctl = I915_READ(RSTDBYCTL);
 989         crstandvid = I915_READ16(CRSTANDVID);
 990
 991         mutex_unlock(&dev->struct_mutex);
 992
 993         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
 994                    "yes" : "no");
 995         seq_printf(m, "Boost freq: %d\n",
 996                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
 997                    MEMMODE_BOOST_FREQ_SHIFT);
 998         seq_printf(m, "HW control enabled: %s\n",
 999                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
1000         seq_printf(m, "SW control enabled: %s\n",
1001                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
1002         seq_printf(m, "Gated voltage change: %s\n",
1003                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
1004         seq_printf(m, "Starting frequency: P%d\n",
1005                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
1006         seq_printf(m, "Max P-state: P%d\n",
1007                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
1008         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
1009         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
1010         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
1011         seq_printf(m, "Render standby enabled: %s\n",
1012                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
1013         seq_printf(m, "Current RS state: ");
1014         switch (rstdbyctl & RSX_STATUS_MASK) {
1015         case RSX_STATUS_ON:
1016                 seq_printf(m, "on\n");
1017                 break;
1018         case RSX_STATUS_RC1:
1019                 seq_printf(m, "RC1\n");
1020                 break;
1021         case RSX_STATUS_RC1E:
1022                 seq_printf(m, "RC1E\n");
1023                 break;
1024         case RSX_STATUS_RS1:
1025                 seq_printf(m, "RS1\n");
1026                 break;
1027         case RSX_STATUS_RS2:
1028                 seq_printf(m, "RS2 (RC6)\n");
1029                 break;
1030         case RSX_STATUS_RS3:
1031                 seq_printf(m, "RC3 (RC6+)\n");
1032                 break;
1033         default:
1034                 seq_printf(m, "unknown\n");
1035                 break;
1036         }
1037
1038         return 0;
1039 }
1040
1041 static int gen6_drpc_info(struct seq_file *m)
1042 {
1043
1044         struct drm_info_node *node = (struct drm_info_node *) m->private;
1045         struct drm_device *dev = node->minor->dev;
1046         struct drm_i915_private *dev_priv = dev->dev_private;
1047         u32 rpmodectl1, gt_core_status, rcctl1;
1048         int count=0, ret;
1049
1050
1051         ret = mutex_lock_interruptible(&dev->struct_mutex);
1052         if (ret)
1053                 return ret;
1054
1055         if (atomic_read(&dev_priv->forcewake_count)) {
1056                 seq_printf(m, "RC information inaccurate because userspace "
1057                               "holds a reference \n");
1058         } else {
1059                 /* NB: we cannot use forcewake, else we read the wrong values */
1060                 while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK) & 1))
1061                         udelay(10);
1062                 seq_printf(m, "RC information accurate: %s\n", yesno(count < 51));
1063         }
1064
1065         gt_core_status = readl(dev_priv->regs + GEN6_GT_CORE_STATUS);
1066         trace_i915_reg_rw(false, GEN6_GT_CORE_STATUS, gt_core_status, 4);
1067
1068         rpmodectl1 = I915_READ(GEN6_RP_CONTROL);
1069         rcctl1 = I915_READ(GEN6_RC_CONTROL);
1070         mutex_unlock(&dev->struct_mutex);
1071
1072         seq_printf(m, "Video Turbo Mode: %s\n",
1073                    yesno(rpmodectl1 & GEN6_RP_MEDIA_TURBO));
1074         seq_printf(m, "HW control enabled: %s\n",
1075                    yesno(rpmodectl1 & GEN6_RP_ENABLE));
1076         seq_printf(m, "SW control enabled: %s\n",
1077                    yesno((rpmodectl1 & GEN6_RP_MEDIA_MODE_MASK) ==
1078                           GEN6_RP_MEDIA_SW_MODE));
1079         seq_printf(m, "RC6 Enabled: %s\n",
1080                    yesno(rcctl1 & GEN6_RC_CTL_RC1e_ENABLE));
1081         seq_printf(m, "RC6 Enabled: %s\n",
1082                    yesno(rcctl1 & GEN6_RC_CTL_RC6_ENABLE));
1083         seq_printf(m, "Deep RC6 Enabled: %s\n",
1084                    yesno(rcctl1 & GEN6_RC_CTL_RC6p_ENABLE));
1085         seq_printf(m, "Deepest RC6 Enabled: %s\n",
1086                    yesno(rcctl1 & GEN6_RC_CTL_RC6pp_ENABLE));
1087         seq_printf(m, "Current RC state: ");
1088         switch (gt_core_status & GEN6_RCn_MASK) {
1089         case GEN6_RC0:
1090                 if (gt_core_status & GEN6_CORE_CPD_STATE_MASK)
1091                         seq_printf(m, "Core Power Down\n");
1092                 else
1093                         seq_printf(m, "on\n");
1094                 break;
1095         case GEN6_RC3:
1096                 seq_printf(m, "RC3\n");
1097                 break;
1098         case GEN6_RC6:
1099                 seq_printf(m, "RC6\n");
1100                 break;
1101         case GEN6_RC7:
1102                 seq_printf(m, "RC7\n");
1103                 break;
1104         default:
1105                 seq_printf(m, "Unknown\n");
1106                 break;
1107         }
1108
1109         seq_printf(m, "Core Power Down: %s\n",
1110                    yesno(gt_core_status & GEN6_CORE_CPD_STATE_MASK));
1111         return 0;
1112 }
1113
1114 static int i915_drpc_info(struct seq_file *m, void *unused)
1115 {
1116         struct drm_info_node *node = (struct drm_info_node *) m->private;
1117         struct drm_device *dev = node->minor->dev;
1118
1119         if (IS_GEN6(dev) || IS_GEN7(dev))
1120                 return gen6_drpc_info(m);
1121         else
1122                 return ironlake_drpc_info(m);
1123 }
1124
1125 static int i915_fbc_status(struct seq_file *m, void *unused)
1126 {
1127         struct drm_info_node *node = (struct drm_info_node *) m->private;
1128         struct drm_device *dev = node->minor->dev;
1129         drm_i915_private_t *dev_priv = dev->dev_private;
1130
1131         if (!I915_HAS_FBC(dev)) {
1132                 seq_printf(m, "FBC unsupported on this chipset\n");
1133                 return 0;
1134         }
1135
1136         if (intel_fbc_enabled(dev)) {
1137                 seq_printf(m, "FBC enabled\n");
1138         } else {
1139                 seq_printf(m, "FBC disabled: ");
1140                 switch (dev_priv->no_fbc_reason) {
1141                 case FBC_NO_OUTPUT:
1142                         seq_printf(m, "no outputs");
1143                         break;
1144                 case FBC_STOLEN_TOO_SMALL:
1145                         seq_printf(m, "not enough stolen memory");
1146                         break;
1147                 case FBC_UNSUPPORTED_MODE:
1148                         seq_printf(m, "mode not supported");
1149                         break;
1150                 case FBC_MODE_TOO_LARGE:
1151                         seq_printf(m, "mode too large");
1152                         break;
1153                 case FBC_BAD_PLANE:
1154                         seq_printf(m, "FBC unsupported on plane");
1155                         break;
1156                 case FBC_NOT_TILED:
1157                         seq_printf(m, "scanout buffer not tiled");
1158                         break;
1159                 case FBC_MULTIPLE_PIPES:
1160                         seq_printf(m, "multiple pipes are enabled");
1161                         break;
1162                 case FBC_MODULE_PARAM:
1163                         seq_printf(m, "disabled per module param (default off)");
1164                         break;
1165                 default:
1166                         seq_printf(m, "unknown reason");
1167                 }
1168                 seq_printf(m, "\n");
1169         }
1170         return 0;
1171 }
1172
1173 static int i915_sr_status(struct seq_file *m, void *unused)
1174 {
1175         struct drm_info_node *node = (struct drm_info_node *) m->private;
1176         struct drm_device *dev = node->minor->dev;
1177         drm_i915_private_t *dev_priv = dev->dev_private;
1178         bool sr_enabled = false;
1179
1180         if (HAS_PCH_SPLIT(dev))
1181                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1182         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
1183                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1184         else if (IS_I915GM(dev))
1185                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1186         else if (IS_PINEVIEW(dev))
1187                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1188
1189         seq_printf(m, "self-refresh: %s\n",
1190                    sr_enabled ? "enabled" : "disabled");
1191
1192         return 0;
1193 }
1194
1195 static int i915_emon_status(struct seq_file *m, void *unused)
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         unsigned long temp, chipset, gfx;
1201         int ret;
1202
1203         ret = mutex_lock_interruptible(&dev->struct_mutex);
1204         if (ret)
1205                 return ret;
1206
1207         temp = i915_mch_val(dev_priv);
1208         chipset = i915_chipset_val(dev_priv);
1209         gfx = i915_gfx_val(dev_priv);
1210         mutex_unlock(&dev->struct_mutex);
1211
1212         seq_printf(m, "GMCH temp: %ld\n", temp);
1213         seq_printf(m, "Chipset power: %ld\n", chipset);
1214         seq_printf(m, "GFX power: %ld\n", gfx);
1215         seq_printf(m, "Total power: %ld\n", chipset + gfx);
1216
1217         return 0;
1218 }
1219
1220 static int i915_ring_freq_table(struct seq_file *m, void *unused)
1221 {
1222         struct drm_info_node *node = (struct drm_info_node *) m->private;
1223         struct drm_device *dev = node->minor->dev;
1224         drm_i915_private_t *dev_priv = dev->dev_private;
1225         int ret;
1226         int gpu_freq, ia_freq;
1227
1228         if (!(IS_GEN6(dev) || IS_GEN7(dev))) {
1229                 seq_printf(m, "unsupported on this chipset\n");
1230                 return 0;
1231         }
1232
1233         ret = mutex_lock_interruptible(&dev->struct_mutex);
1234         if (ret)
1235                 return ret;
1236
1237         seq_printf(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\n");
1238
1239         for (gpu_freq = dev_priv->min_delay; gpu_freq <= dev_priv->max_delay;
1240              gpu_freq++) {
1241                 I915_WRITE(GEN6_PCODE_DATA, gpu_freq);
1242                 I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY |
1243                            GEN6_PCODE_READ_MIN_FREQ_TABLE);
1244                 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) &
1245                               GEN6_PCODE_READY) == 0, 10)) {
1246                         DRM_ERROR("pcode read of freq table timed out\n");
1247                         continue;
1248                 }
1249                 ia_freq = I915_READ(GEN6_PCODE_DATA);
1250                 seq_printf(m, "%d\t\t%d\n", gpu_freq * 50, ia_freq * 100);
1251         }
1252
1253         mutex_unlock(&dev->struct_mutex);
1254
1255         return 0;
1256 }
1257
1258 static int i915_gfxec(struct seq_file *m, void *unused)
1259 {
1260         struct drm_info_node *node = (struct drm_info_node *) m->private;
1261         struct drm_device *dev = node->minor->dev;
1262         drm_i915_private_t *dev_priv = dev->dev_private;
1263         int ret;
1264
1265         ret = mutex_lock_interruptible(&dev->struct_mutex);
1266         if (ret)
1267                 return ret;
1268
1269         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
1270
1271         mutex_unlock(&dev->struct_mutex);
1272
1273         return 0;
1274 }
1275
1276 static int i915_opregion(struct seq_file *m, void *unused)
1277 {
1278         struct drm_info_node *node = (struct drm_info_node *) m->private;
1279         struct drm_device *dev = node->minor->dev;
1280         drm_i915_private_t *dev_priv = dev->dev_private;
1281         struct intel_opregion *opregion = &dev_priv->opregion;
1282         int ret;
1283
1284         ret = mutex_lock_interruptible(&dev->struct_mutex);
1285         if (ret)
1286                 return ret;
1287
1288         if (opregion->header)
1289                 seq_write(m, opregion->header, OPREGION_SIZE);
1290
1291         mutex_unlock(&dev->struct_mutex);
1292
1293         return 0;
1294 }
1295
1296 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
1297 {
1298         struct drm_info_node *node = (struct drm_info_node *) m->private;
1299         struct drm_device *dev = node->minor->dev;
1300         drm_i915_private_t *dev_priv = dev->dev_private;
1301         struct intel_fbdev *ifbdev;
1302         struct intel_framebuffer *fb;
1303         int ret;
1304
1305         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1306         if (ret)
1307                 return ret;
1308
1309         ifbdev = dev_priv->fbdev;
1310         fb = to_intel_framebuffer(ifbdev->helper.fb);
1311
1312         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
1313                    fb->base.width,
1314                    fb->base.height,
1315                    fb->base.depth,
1316                    fb->base.bits_per_pixel);
1317         describe_obj(m, fb->obj);
1318         seq_printf(m, "\n");
1319
1320         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
1321                 if (&fb->base == ifbdev->helper.fb)
1322                         continue;
1323
1324                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
1325                            fb->base.width,
1326                            fb->base.height,
1327                            fb->base.depth,
1328                            fb->base.bits_per_pixel);
1329                 describe_obj(m, fb->obj);
1330                 seq_printf(m, "\n");
1331         }
1332
1333         mutex_unlock(&dev->mode_config.mutex);
1334
1335         return 0;
1336 }
1337
1338 static int i915_context_status(struct seq_file *m, void *unused)
1339 {
1340         struct drm_info_node *node = (struct drm_info_node *) m->private;
1341         struct drm_device *dev = node->minor->dev;
1342         drm_i915_private_t *dev_priv = dev->dev_private;
1343         int ret;
1344
1345         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1346         if (ret)
1347                 return ret;
1348
1349         if (dev_priv->pwrctx) {
1350                 seq_printf(m, "power context ");
1351                 describe_obj(m, dev_priv->pwrctx);
1352                 seq_printf(m, "\n");
1353         }
1354
1355         if (dev_priv->renderctx) {
1356                 seq_printf(m, "render context ");
1357                 describe_obj(m, dev_priv->renderctx);
1358                 seq_printf(m, "\n");
1359         }
1360
1361         mutex_unlock(&dev->mode_config.mutex);
1362
1363         return 0;
1364 }
1365
1366 static int i915_gen6_forcewake_count_info(struct seq_file *m, void *data)
1367 {
1368         struct drm_info_node *node = (struct drm_info_node *) m->private;
1369         struct drm_device *dev = node->minor->dev;
1370         struct drm_i915_private *dev_priv = dev->dev_private;
1371
1372         seq_printf(m, "forcewake count = %d\n",
1373                    atomic_read(&dev_priv->forcewake_count));
1374
1375         return 0;
1376 }
1377
1378 static int
1379 i915_debugfs_common_open(struct inode *inode,
1380                          struct file *filp)
1381 {
1382         filp->private_data = inode->i_private;
1383         return 0;
1384 }
1385
1386 static ssize_t
1387 i915_wedged_read(struct file *filp,
1388                  char __user *ubuf,
1389                  size_t max,
1390                  loff_t *ppos)
1391 {
1392         struct drm_device *dev = filp->private_data;
1393         drm_i915_private_t *dev_priv = dev->dev_private;
1394         char buf[80];
1395         int len;
1396
1397         len = snprintf(buf, sizeof(buf),
1398                        "wedged :  %d\n",
1399                        atomic_read(&dev_priv->mm.wedged));
1400
1401         if (len > sizeof(buf))
1402                 len = sizeof(buf);
1403
1404         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1405 }
1406
1407 static ssize_t
1408 i915_wedged_write(struct file *filp,
1409                   const char __user *ubuf,
1410                   size_t cnt,
1411                   loff_t *ppos)
1412 {
1413         struct drm_device *dev = filp->private_data;
1414         char buf[20];
1415         int val = 1;
1416
1417         if (cnt > 0) {
1418                 if (cnt > sizeof(buf) - 1)
1419                         return -EINVAL;
1420
1421                 if (copy_from_user(buf, ubuf, cnt))
1422                         return -EFAULT;
1423                 buf[cnt] = 0;
1424
1425                 val = simple_strtoul(buf, NULL, 0);
1426         }
1427
1428         DRM_INFO("Manually setting wedged to %d\n", val);
1429         i915_handle_error(dev, val);
1430
1431         return cnt;
1432 }
1433
1434 static const struct file_operations i915_wedged_fops = {
1435         .owner = THIS_MODULE,
1436         .open = i915_debugfs_common_open,
1437         .read = i915_wedged_read,
1438         .write = i915_wedged_write,
1439         .llseek = default_llseek,
1440 };
1441
1442 static ssize_t
1443 i915_max_freq_read(struct file *filp,
1444                    char __user *ubuf,
1445                    size_t max,
1446                    loff_t *ppos)
1447 {
1448         struct drm_device *dev = filp->private_data;
1449         drm_i915_private_t *dev_priv = dev->dev_private;
1450         char buf[80];
1451         int len;
1452
1453         len = snprintf(buf, sizeof(buf),
1454                        "max freq: %d\n", dev_priv->max_delay * 50);
1455
1456         if (len > sizeof(buf))
1457                 len = sizeof(buf);
1458
1459         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1460 }
1461
1462 static ssize_t
1463 i915_max_freq_write(struct file *filp,
1464                   const char __user *ubuf,
1465                   size_t cnt,
1466                   loff_t *ppos)
1467 {
1468         struct drm_device *dev = filp->private_data;
1469         struct drm_i915_private *dev_priv = dev->dev_private;
1470         char buf[20];
1471         int val = 1;
1472
1473         if (cnt > 0) {
1474                 if (cnt > sizeof(buf) - 1)
1475                         return -EINVAL;
1476
1477                 if (copy_from_user(buf, ubuf, cnt))
1478                         return -EFAULT;
1479                 buf[cnt] = 0;
1480
1481                 val = simple_strtoul(buf, NULL, 0);
1482         }
1483
1484         DRM_DEBUG_DRIVER("Manually setting max freq to %d\n", val);
1485
1486         /*
1487          * Turbo will still be enabled, but won't go above the set value.
1488          */
1489         dev_priv->max_delay = val / 50;
1490
1491         gen6_set_rps(dev, val / 50);
1492
1493         return cnt;
1494 }
1495
1496 static const struct file_operations i915_max_freq_fops = {
1497         .owner = THIS_MODULE,
1498         .open = i915_debugfs_common_open,
1499         .read = i915_max_freq_read,
1500         .write = i915_max_freq_write,
1501         .llseek = default_llseek,
1502 };
1503
1504 static ssize_t
1505 i915_cache_sharing_read(struct file *filp,
1506                    char __user *ubuf,
1507                    size_t max,
1508                    loff_t *ppos)
1509 {
1510         struct drm_device *dev = filp->private_data;
1511         drm_i915_private_t *dev_priv = dev->dev_private;
1512         char buf[80];
1513         u32 snpcr;
1514         int len;
1515
1516         mutex_lock(&dev_priv->dev->struct_mutex);
1517         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1518         mutex_unlock(&dev_priv->dev->struct_mutex);
1519
1520         len = snprintf(buf, sizeof(buf),
1521                        "%d\n", (snpcr & GEN6_MBC_SNPCR_MASK) >>
1522                        GEN6_MBC_SNPCR_SHIFT);
1523
1524         if (len > sizeof(buf))
1525                 len = sizeof(buf);
1526
1527         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1528 }
1529
1530 static ssize_t
1531 i915_cache_sharing_write(struct file *filp,
1532                   const char __user *ubuf,
1533                   size_t cnt,
1534                   loff_t *ppos)
1535 {
1536         struct drm_device *dev = filp->private_data;
1537         struct drm_i915_private *dev_priv = dev->dev_private;
1538         char buf[20];
1539         u32 snpcr;
1540         int val = 1;
1541
1542         if (cnt > 0) {
1543                 if (cnt > sizeof(buf) - 1)
1544                         return -EINVAL;
1545
1546                 if (copy_from_user(buf, ubuf, cnt))
1547                         return -EFAULT;
1548                 buf[cnt] = 0;
1549
1550                 val = simple_strtoul(buf, NULL, 0);
1551         }
1552
1553         if (val < 0 || val > 3)
1554                 return -EINVAL;
1555
1556         DRM_DEBUG_DRIVER("Manually setting uncore sharing to %d\n", val);
1557
1558         /* Update the cache sharing policy here as well */
1559         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1560         snpcr &= ~GEN6_MBC_SNPCR_MASK;
1561         snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
1562         I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
1563
1564         return cnt;
1565 }
1566
1567 static const struct file_operations i915_cache_sharing_fops = {
1568         .owner = THIS_MODULE,
1569         .open = i915_debugfs_common_open,
1570         .read = i915_cache_sharing_read,
1571         .write = i915_cache_sharing_write,
1572         .llseek = default_llseek,
1573 };
1574
1575 /* As the drm_debugfs_init() routines are called before dev->dev_private is
1576  * allocated we need to hook into the minor for release. */
1577 static int
1578 drm_add_fake_info_node(struct drm_minor *minor,
1579                        struct dentry *ent,
1580                        const void *key)
1581 {
1582         struct drm_info_node *node;
1583
1584         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
1585         if (node == NULL) {
1586                 debugfs_remove(ent);
1587                 return -ENOMEM;
1588         }
1589
1590         node->minor = minor;
1591         node->dent = ent;
1592         node->info_ent = (void *) key;
1593
1594         mutex_lock(&minor->debugfs_lock);
1595         list_add(&node->list, &minor->debugfs_list);
1596         mutex_unlock(&minor->debugfs_lock);
1597
1598         return 0;
1599 }
1600
1601 static int i915_forcewake_open(struct inode *inode, struct file *file)
1602 {
1603         struct drm_device *dev = inode->i_private;
1604         struct drm_i915_private *dev_priv = dev->dev_private;
1605         int ret;
1606
1607         if (!IS_GEN6(dev))
1608                 return 0;
1609
1610         ret = mutex_lock_interruptible(&dev->struct_mutex);
1611         if (ret)
1612                 return ret;
1613         gen6_gt_force_wake_get(dev_priv);
1614         mutex_unlock(&dev->struct_mutex);
1615
1616         return 0;
1617 }
1618
1619 int i915_forcewake_release(struct inode *inode, struct file *file)
1620 {
1621         struct drm_device *dev = inode->i_private;
1622         struct drm_i915_private *dev_priv = dev->dev_private;
1623
1624         if (!IS_GEN6(dev))
1625                 return 0;
1626
1627         /*
1628          * It's bad that we can potentially hang userspace if struct_mutex gets
1629          * forever stuck.  However, if we cannot acquire this lock it means that
1630          * almost certainly the driver has hung, is not unload-able. Therefore
1631          * hanging here is probably a minor inconvenience not to be seen my
1632          * almost every user.
1633          */
1634         mutex_lock(&dev->struct_mutex);
1635         gen6_gt_force_wake_put(dev_priv);
1636         mutex_unlock(&dev->struct_mutex);
1637
1638         return 0;
1639 }
1640
1641 static const struct file_operations i915_forcewake_fops = {
1642         .owner = THIS_MODULE,
1643         .open = i915_forcewake_open,
1644         .release = i915_forcewake_release,
1645 };
1646
1647 static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
1648 {
1649         struct drm_device *dev = minor->dev;
1650         struct dentry *ent;
1651
1652         ent = debugfs_create_file("i915_forcewake_user",
1653                                   S_IRUSR,
1654                                   root, dev,
1655                                   &i915_forcewake_fops);
1656         if (IS_ERR(ent))
1657                 return PTR_ERR(ent);
1658
1659         return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
1660 }
1661
1662 static int i915_debugfs_create(struct dentry *root,
1663                                struct drm_minor *minor,
1664                                const char *name,
1665                                const struct file_operations *fops)
1666 {
1667         struct drm_device *dev = minor->dev;
1668         struct dentry *ent;
1669
1670         ent = debugfs_create_file(name,
1671                                   S_IRUGO | S_IWUSR,
1672                                   root, dev,
1673                                   fops);
1674         if (IS_ERR(ent))
1675                 return PTR_ERR(ent);
1676
1677         return drm_add_fake_info_node(minor, ent, fops);
1678 }
1679
1680 static struct drm_info_list i915_debugfs_list[] = {
1681         {"i915_capabilities", i915_capabilities, 0},
1682         {"i915_gem_objects", i915_gem_object_info, 0},
1683         {"i915_gem_gtt", i915_gem_gtt_info, 0},
1684         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
1685         {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
1686         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
1687         {"i915_gem_pinned", i915_gem_object_list_info, 0, (void *) PINNED_LIST},
1688         {"i915_gem_deferred_free", i915_gem_object_list_info, 0, (void *) DEFERRED_FREE_LIST},
1689         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
1690         {"i915_gem_request", i915_gem_request_info, 0},
1691         {"i915_gem_seqno", i915_gem_seqno_info, 0},
1692         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
1693         {"i915_gem_interrupt", i915_interrupt_info, 0},
1694         {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
1695         {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
1696         {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
1697         {"i915_ringbuffer_data", i915_ringbuffer_data, 0, (void *)RCS},
1698         {"i915_ringbuffer_info", i915_ringbuffer_info, 0, (void *)RCS},
1699         {"i915_bsd_ringbuffer_data", i915_ringbuffer_data, 0, (void *)VCS},
1700         {"i915_bsd_ringbuffer_info", i915_ringbuffer_info, 0, (void *)VCS},
1701         {"i915_blt_ringbuffer_data", i915_ringbuffer_data, 0, (void *)BCS},
1702         {"i915_blt_ringbuffer_info", i915_ringbuffer_info, 0, (void *)BCS},
1703         {"i915_error_state", i915_error_state, 0},
1704         {"i915_rstdby_delays", i915_rstdby_delays, 0},
1705         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
1706         {"i915_delayfreq_table", i915_delayfreq_table, 0},
1707         {"i915_inttoext_table", i915_inttoext_table, 0},
1708         {"i915_drpc_info", i915_drpc_info, 0},
1709         {"i915_emon_status", i915_emon_status, 0},
1710         {"i915_ring_freq_table", i915_ring_freq_table, 0},
1711         {"i915_gfxec", i915_gfxec, 0},
1712         {"i915_fbc_status", i915_fbc_status, 0},
1713         {"i915_sr_status", i915_sr_status, 0},
1714         {"i915_opregion", i915_opregion, 0},
1715         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
1716         {"i915_context_status", i915_context_status, 0},
1717         {"i915_gen6_forcewake_count", i915_gen6_forcewake_count_info, 0},
1718 };
1719 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
1720
1721 int i915_debugfs_init(struct drm_minor *minor)
1722 {
1723         int ret;
1724
1725         ret = i915_debugfs_create(minor->debugfs_root, minor,
1726                                   "i915_wedged",
1727                                   &i915_wedged_fops);
1728         if (ret)
1729                 return ret;
1730
1731         ret = i915_forcewake_create(minor->debugfs_root, minor);
1732         if (ret)
1733                 return ret;
1734
1735         ret = i915_debugfs_create(minor->debugfs_root, minor,
1736                                   "i915_max_freq",
1737                                   &i915_max_freq_fops);
1738         if (ret)
1739                 return ret;
1740
1741         ret = i915_debugfs_create(minor->debugfs_root, minor,
1742                                   "i915_cache_sharing",
1743                                   &i915_cache_sharing_fops);
1744         if (ret)
1745                 return ret;
1746
1747         return drm_debugfs_create_files(i915_debugfs_list,
1748                                         I915_DEBUGFS_ENTRIES,
1749                                         minor->debugfs_root, minor);
1750 }
1751
1752 void i915_debugfs_cleanup(struct drm_minor *minor)
1753 {
1754         drm_debugfs_remove_files(i915_debugfs_list,
1755                                  I915_DEBUGFS_ENTRIES, minor);
1756         drm_debugfs_remove_files((struct drm_info_list *) &i915_forcewake_fops,
1757                                  1, minor);
1758         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
1759                                  1, minor);
1760         drm_debugfs_remove_files((struct drm_info_list *) &i915_max_freq_fops,
1761                                  1, minor);
1762         drm_debugfs_remove_files((struct drm_info_list *) &i915_cache_sharing_fops,
1763                                  1, minor);
1764 }
1765
1766 #endif /* CONFIG_DEBUG_FS */