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 "i915_drm.h"
  36 #include "i915_drv.h"
  37
  38 #define DRM_I915_RING_DEBUG 1
  39
  40
  41 #if defined(CONFIG_DEBUG_FS)
  42
  43 enum {
  44         ACTIVE_LIST,
  45         FLUSHING_LIST,
  46         INACTIVE_LIST,
  47         PINNED_LIST,
  48         DEFERRED_FREE_LIST,
  49 };
  50
  51 static const char *yesno(int v)
  52 {
  53         return v ? "yes" : "no";
  54 }
  55
  56 static int i915_capabilities(struct seq_file *m, void *data)
  57 {
  58         struct drm_info_node *node = (struct drm_info_node *) m->private;
  59         struct drm_device *dev = node->minor->dev;
  60         const struct intel_device_info *info = INTEL_INFO(dev);
  61
  62         seq_printf(m, "gen: %d\n", info->gen);
  63 #define B(x) seq_printf(m, #x ": %s\n", yesno(info->x))
  64         B(is_mobile);
  65         B(is_i85x);
  66         B(is_i915g);
  67         B(is_i945gm);
  68         B(is_g33);
  69         B(need_gfx_hws);
  70         B(is_g4x);
  71         B(is_pineview);
  72         B(is_broadwater);
  73         B(is_crestline);
  74         B(is_ironlake);
  75         B(has_fbc);
  76         B(has_rc6);
  77         B(has_pipe_cxsr);
  78         B(has_hotplug);
  79         B(cursor_needs_physical);
  80         B(has_overlay);
  81         B(overlay_needs_physical);
  82         B(supports_tv);
  83         B(has_bsd_ring);
  84         B(has_blt_ring);
  85 #undef B
  86
  87         return 0;
  88 }
  89
  90 static const char *get_pin_flag(struct drm_i915_gem_object *obj_priv)
  91 {
  92         if (obj_priv->user_pin_count > 0)
  93                 return "P";
  94         else if (obj_priv->pin_count > 0)
  95                 return "p";
  96         else
  97                 return " ";
  98 }
  99
 100 static const char *get_tiling_flag(struct drm_i915_gem_object *obj_priv)
 101 {
 102     switch (obj_priv->tiling_mode) {
 103     default:
 104     case I915_TILING_NONE: return " ";
 105     case I915_TILING_X: return "X";
 106     case I915_TILING_Y: return "Y";
 107     }
 108 }
 109
 110 static void
 111 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 112 {
 113         seq_printf(m, "%p: %s%s %8zd %08x %08x %d%s%s",
 114                    &obj->base,
 115                    get_pin_flag(obj),
 116                    get_tiling_flag(obj),
 117                    obj->base.size,
 118                    obj->base.read_domains,
 119                    obj->base.write_domain,
 120                    obj->last_rendering_seqno,
 121                    obj->dirty ? " dirty" : "",
 122                    obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
 123         if (obj->base.name)
 124                 seq_printf(m, " (name: %d)", obj->base.name);
 125         if (obj->fence_reg != I915_FENCE_REG_NONE)
 126                 seq_printf(m, " (fence: %d)", obj->fence_reg);
 127         if (obj->gtt_space != NULL)
 128                 seq_printf(m, " (gtt_offset: %08x)", obj->gtt_offset);
 129         if (obj->ring != NULL)
 130                 seq_printf(m, " (%s)", obj->ring->name);
 131 }
 132
 133 static int i915_gem_object_list_info(struct seq_file *m, void *data)
 134 {
 135         struct drm_info_node *node = (struct drm_info_node *) m->private;
 136         uintptr_t list = (uintptr_t) node->info_ent->data;
 137         struct list_head *head;
 138         struct drm_device *dev = node->minor->dev;
 139         drm_i915_private_t *dev_priv = dev->dev_private;
 140         struct drm_i915_gem_object *obj_priv;
 141         size_t total_obj_size, total_gtt_size;
 142         int count, ret;
 143
 144         ret = mutex_lock_interruptible(&dev->struct_mutex);
 145         if (ret)
 146                 return ret;
 147
 148         switch (list) {
 149         case ACTIVE_LIST:
 150                 seq_printf(m, "Active:\n");
 151                 head = &dev_priv->mm.active_list;
 152                 break;
 153         case INACTIVE_LIST:
 154                 seq_printf(m, "Inactive:\n");
 155                 head = &dev_priv->mm.inactive_list;
 156                 break;
 157         case PINNED_LIST:
 158                 seq_printf(m, "Pinned:\n");
 159                 head = &dev_priv->mm.pinned_list;
 160                 break;
 161         case FLUSHING_LIST:
 162                 seq_printf(m, "Flushing:\n");
 163                 head = &dev_priv->mm.flushing_list;
 164                 break;
 165         case DEFERRED_FREE_LIST:
 166                 seq_printf(m, "Deferred free:\n");
 167                 head = &dev_priv->mm.deferred_free_list;
 168                 break;
 169         default:
 170                 mutex_unlock(&dev->struct_mutex);
 171                 return -EINVAL;
 172         }
 173
 174         total_obj_size = total_gtt_size = count = 0;
 175         list_for_each_entry(obj_priv, head, mm_list) {
 176                 seq_printf(m, "   ");
 177                 describe_obj(m, obj_priv);
 178                 seq_printf(m, "\n");
 179                 total_obj_size += obj_priv->base.size;
 180                 total_gtt_size += obj_priv->gtt_space->size;
 181                 count++;
 182         }
 183         mutex_unlock(&dev->struct_mutex);
 184
 185         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 186                    count, total_obj_size, total_gtt_size);
 187         return 0;
 188 }
 189
 190 static int i915_gem_object_info(struct seq_file *m, void* data)
 191 {
 192         struct drm_info_node *node = (struct drm_info_node *) m->private;
 193         struct drm_device *dev = node->minor->dev;
 194         struct drm_i915_private *dev_priv = dev->dev_private;
 195         int ret;
 196
 197         ret = mutex_lock_interruptible(&dev->struct_mutex);
 198         if (ret)
 199                 return ret;
 200
 201         seq_printf(m, "%u objects\n", dev_priv->mm.object_count);
 202         seq_printf(m, "%zu object bytes\n", dev_priv->mm.object_memory);
 203         seq_printf(m, "%u pinned\n", dev_priv->mm.pin_count);
 204         seq_printf(m, "%zu pin bytes\n", dev_priv->mm.pin_memory);
 205         seq_printf(m, "%u objects in gtt\n", dev_priv->mm.gtt_count);
 206         seq_printf(m, "%zu gtt bytes\n", dev_priv->mm.gtt_memory);
 207         seq_printf(m, "%zu gtt total\n", dev_priv->mm.gtt_total);
 208
 209         mutex_unlock(&dev->struct_mutex);
 210
 211         return 0;
 212 }
 213
 214
 215 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
 216 {
 217         struct drm_info_node *node = (struct drm_info_node *) m->private;
 218         struct drm_device *dev = node->minor->dev;
 219         unsigned long flags;
 220         struct intel_crtc *crtc;
 221
 222         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
 223                 const char *pipe = crtc->pipe ? "B" : "A";
 224                 const char *plane = crtc->plane ? "B" : "A";
 225                 struct intel_unpin_work *work;
 226
 227                 spin_lock_irqsave(&dev->event_lock, flags);
 228                 work = crtc->unpin_work;
 229                 if (work == NULL) {
 230                         seq_printf(m, "No flip due on pipe %s (plane %s)\n",
 231                                    pipe, plane);
 232                 } else {
 233                         if (!work->pending) {
 234                                 seq_printf(m, "Flip queued on pipe %s (plane %s)\n",
 235                                            pipe, plane);
 236                         } else {
 237                                 seq_printf(m, "Flip pending (waiting for vsync) on pipe %s (plane %s)\n",
 238                                            pipe, plane);
 239                         }
 240                         if (work->enable_stall_check)
 241                                 seq_printf(m, "Stall check enabled, ");
 242                         else
 243                                 seq_printf(m, "Stall check waiting for page flip ioctl, ");
 244                         seq_printf(m, "%d prepares\n", work->pending);
 245
 246                         if (work->old_fb_obj) {
 247                                 struct drm_i915_gem_object *obj_priv = to_intel_bo(work->old_fb_obj);
 248                                 if(obj_priv)
 249                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj_priv->gtt_offset );
 250                         }
 251                         if (work->pending_flip_obj) {
 252                                 struct drm_i915_gem_object *obj_priv = to_intel_bo(work->pending_flip_obj);
 253                                 if(obj_priv)
 254                                         seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj_priv->gtt_offset );
 255                         }
 256                 }
 257                 spin_unlock_irqrestore(&dev->event_lock, flags);
 258         }
 259
 260         return 0;
 261 }
 262
 263 static int i915_gem_request_info(struct seq_file *m, void *data)
 264 {
 265         struct drm_info_node *node = (struct drm_info_node *) m->private;
 266         struct drm_device *dev = node->minor->dev;
 267         drm_i915_private_t *dev_priv = dev->dev_private;
 268         struct drm_i915_gem_request *gem_request;
 269         int ret;
 270
 271         ret = mutex_lock_interruptible(&dev->struct_mutex);
 272         if (ret)
 273                 return ret;
 274
 275         seq_printf(m, "Request:\n");
 276         list_for_each_entry(gem_request, &dev_priv->render_ring.request_list,
 277                         list) {
 278                 seq_printf(m, "    %d @ %d\n",
 279                            gem_request->seqno,
 280                            (int) (jiffies - gem_request->emitted_jiffies));
 281         }
 282         mutex_unlock(&dev->struct_mutex);
 283
 284         return 0;
 285 }
 286
 287 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 288 {
 289         struct drm_info_node *node = (struct drm_info_node *) m->private;
 290         struct drm_device *dev = node->minor->dev;
 291         drm_i915_private_t *dev_priv = dev->dev_private;
 292         int ret;
 293
 294         ret = mutex_lock_interruptible(&dev->struct_mutex);
 295         if (ret)
 296                 return ret;
 297
 298         if (dev_priv->render_ring.status_page.page_addr != NULL) {
 299                 seq_printf(m, "Current sequence: %d\n",
 300                            dev_priv->render_ring.get_seqno(dev, &dev_priv->render_ring));
 301         } else {
 302                 seq_printf(m, "Current sequence: hws uninitialized\n");
 303         }
 304         seq_printf(m, "Waiter sequence:  %d\n",
 305                         dev_priv->mm.waiting_gem_seqno);
 306         seq_printf(m, "IRQ sequence:     %d\n", dev_priv->mm.irq_gem_seqno);
 307
 308         mutex_unlock(&dev->struct_mutex);
 309
 310         return 0;
 311 }
 312
 313
 314 static int i915_interrupt_info(struct seq_file *m, void *data)
 315 {
 316         struct drm_info_node *node = (struct drm_info_node *) m->private;
 317         struct drm_device *dev = node->minor->dev;
 318         drm_i915_private_t *dev_priv = dev->dev_private;
 319         int ret;
 320
 321         ret = mutex_lock_interruptible(&dev->struct_mutex);
 322         if (ret)
 323                 return ret;
 324
 325         if (!HAS_PCH_SPLIT(dev)) {
 326                 seq_printf(m, "Interrupt enable:    %08x\n",
 327                            I915_READ(IER));
 328                 seq_printf(m, "Interrupt identity:  %08x\n",
 329                            I915_READ(IIR));
 330                 seq_printf(m, "Interrupt mask:      %08x\n",
 331                            I915_READ(IMR));
 332                 seq_printf(m, "Pipe A stat:         %08x\n",
 333                            I915_READ(PIPEASTAT));
 334                 seq_printf(m, "Pipe B stat:         %08x\n",
 335                            I915_READ(PIPEBSTAT));
 336         } else {
 337                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
 338                            I915_READ(DEIER));
 339                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
 340                            I915_READ(DEIIR));
 341                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
 342                            I915_READ(DEIMR));
 343                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
 344                            I915_READ(SDEIER));
 345                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
 346                            I915_READ(SDEIIR));
 347                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
 348                            I915_READ(SDEIMR));
 349                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
 350                            I915_READ(GTIER));
 351                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
 352                            I915_READ(GTIIR));
 353                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
 354                            I915_READ(GTIMR));
 355         }
 356         seq_printf(m, "Interrupts received: %d\n",
 357                    atomic_read(&dev_priv->irq_received));
 358         if (dev_priv->render_ring.status_page.page_addr != NULL) {
 359                 seq_printf(m, "Current sequence:    %d\n",
 360                            dev_priv->render_ring.get_seqno(dev, &dev_priv->render_ring));
 361         } else {
 362                 seq_printf(m, "Current sequence:    hws uninitialized\n");
 363         }
 364         seq_printf(m, "Waiter sequence:     %d\n",
 365                    dev_priv->mm.waiting_gem_seqno);
 366         seq_printf(m, "IRQ sequence:        %d\n",
 367                    dev_priv->mm.irq_gem_seqno);
 368         mutex_unlock(&dev->struct_mutex);
 369
 370         return 0;
 371 }
 372
 373 static int i915_gem_fence_regs_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         int i, ret;
 379
 380         ret = mutex_lock_interruptible(&dev->struct_mutex);
 381         if (ret)
 382                 return ret;
 383
 384         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 385         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 386         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 387                 struct drm_gem_object *obj = dev_priv->fence_regs[i].obj;
 388
 389                 if (obj == NULL) {
 390                         seq_printf(m, "Fenced object[%2d] = unused\n", i);
 391                 } else {
 392                         struct drm_i915_gem_object *obj_priv;
 393
 394                         obj_priv = to_intel_bo(obj);
 395                         seq_printf(m, "Fenced object[%2d] = %p: %s "
 396                                    "%08x %08zx %08x %s %08x %08x %d",
 397                                    i, obj, get_pin_flag(obj_priv),
 398                                    obj_priv->gtt_offset,
 399                                    obj->size, obj_priv->stride,
 400                                    get_tiling_flag(obj_priv),
 401                                    obj->read_domains, obj->write_domain,
 402                                    obj_priv->last_rendering_seqno);
 403                         if (obj->name)
 404                                 seq_printf(m, " (name: %d)", obj->name);
 405                         seq_printf(m, "\n");
 406                 }
 407         }
 408         mutex_unlock(&dev->struct_mutex);
 409
 410         return 0;
 411 }
 412
 413 static int i915_hws_info(struct seq_file *m, void *data)
 414 {
 415         struct drm_info_node *node = (struct drm_info_node *) m->private;
 416         struct drm_device *dev = node->minor->dev;
 417         drm_i915_private_t *dev_priv = dev->dev_private;
 418         int i;
 419         volatile u32 *hws;
 420
 421         hws = (volatile u32 *)dev_priv->render_ring.status_page.page_addr;
 422         if (hws == NULL)
 423                 return 0;
 424
 425         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 426                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 427                            i * 4,
 428                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 429         }
 430         return 0;
 431 }
 432
 433 static void i915_dump_object(struct seq_file *m,
 434                              struct io_mapping *mapping,
 435                              struct drm_i915_gem_object *obj_priv)
 436 {
 437         int page, page_count, i;
 438
 439         page_count = obj_priv->base.size / PAGE_SIZE;
 440         for (page = 0; page < page_count; page++) {
 441                 u32 *mem = io_mapping_map_wc(mapping,
 442                                              obj_priv->gtt_offset + page * PAGE_SIZE);
 443                 for (i = 0; i < PAGE_SIZE; i += 4)
 444                         seq_printf(m, "%08x :  %08x\n", i, mem[i / 4]);
 445                 io_mapping_unmap(mem);
 446         }
 447 }
 448
 449 static int i915_batchbuffer_info(struct seq_file *m, void *data)
 450 {
 451         struct drm_info_node *node = (struct drm_info_node *) m->private;
 452         struct drm_device *dev = node->minor->dev;
 453         drm_i915_private_t *dev_priv = dev->dev_private;
 454         struct drm_gem_object *obj;
 455         struct drm_i915_gem_object *obj_priv;
 456         int ret;
 457
 458         ret = mutex_lock_interruptible(&dev->struct_mutex);
 459         if (ret)
 460                 return ret;
 461
 462         list_for_each_entry(obj_priv, &dev_priv->mm.active_list, mm_list) {
 463                 obj = &obj_priv->base;
 464                 if (obj->read_domains & I915_GEM_DOMAIN_COMMAND) {
 465                     seq_printf(m, "--- gtt_offset = 0x%08x\n",
 466                                obj_priv->gtt_offset);
 467                     i915_dump_object(m, dev_priv->mm.gtt_mapping, obj_priv);
 468                 }
 469         }
 470
 471         mutex_unlock(&dev->struct_mutex);
 472
 473         return 0;
 474 }
 475
 476 static int i915_ringbuffer_data(struct seq_file *m, void *data)
 477 {
 478         struct drm_info_node *node = (struct drm_info_node *) m->private;
 479         struct drm_device *dev = node->minor->dev;
 480         drm_i915_private_t *dev_priv = dev->dev_private;
 481         int ret;
 482
 483         ret = mutex_lock_interruptible(&dev->struct_mutex);
 484         if (ret)
 485                 return ret;
 486
 487         if (!dev_priv->render_ring.gem_object) {
 488                 seq_printf(m, "No ringbuffer setup\n");
 489         } else {
 490                 u8 *virt = dev_priv->render_ring.virtual_start;
 491                 uint32_t off;
 492
 493                 for (off = 0; off < dev_priv->render_ring.size; off += 4) {
 494                         uint32_t *ptr = (uint32_t *)(virt + off);
 495                         seq_printf(m, "%08x :  %08x\n", off, *ptr);
 496                 }
 497         }
 498         mutex_unlock(&dev->struct_mutex);
 499
 500         return 0;
 501 }
 502
 503 static int i915_ringbuffer_info(struct seq_file *m, void *data)
 504 {
 505         struct drm_info_node *node = (struct drm_info_node *) m->private;
 506         struct drm_device *dev = node->minor->dev;
 507         drm_i915_private_t *dev_priv = dev->dev_private;
 508         unsigned int head, tail;
 509
 510         head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
 511         tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
 512
 513         seq_printf(m, "RingHead :  %08x\n", head);
 514         seq_printf(m, "RingTail :  %08x\n", tail);
 515         seq_printf(m, "RingSize :  %08lx\n", dev_priv->render_ring.size);
 516         seq_printf(m, "Acthd :     %08x\n", I915_READ(INTEL_INFO(dev)->gen >= 4 ? ACTHD_I965 : ACTHD));
 517
 518         return 0;
 519 }
 520
 521 static const char *pin_flag(int pinned)
 522 {
 523         if (pinned > 0)
 524                 return " P";
 525         else if (pinned < 0)
 526                 return " p";
 527         else
 528                 return "";
 529 }
 530
 531 static const char *tiling_flag(int tiling)
 532 {
 533         switch (tiling) {
 534         default:
 535         case I915_TILING_NONE: return "";
 536         case I915_TILING_X: return " X";
 537         case I915_TILING_Y: return " Y";
 538         }
 539 }
 540
 541 static const char *dirty_flag(int dirty)
 542 {
 543         return dirty ? " dirty" : "";
 544 }
 545
 546 static const char *purgeable_flag(int purgeable)
 547 {
 548         return purgeable ? " purgeable" : "";
 549 }
 550
 551 static int i915_error_state(struct seq_file *m, void *unused)
 552 {
 553         struct drm_info_node *node = (struct drm_info_node *) m->private;
 554         struct drm_device *dev = node->minor->dev;
 555         drm_i915_private_t *dev_priv = dev->dev_private;
 556         struct drm_i915_error_state *error;
 557         unsigned long flags;
 558         int i, page, offset, elt;
 559
 560         spin_lock_irqsave(&dev_priv->error_lock, flags);
 561         if (!dev_priv->first_error) {
 562                 seq_printf(m, "no error state collected\n");
 563                 goto out;
 564         }
 565
 566         error = dev_priv->first_error;
 567
 568         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 569                    error->time.tv_usec);
 570         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
 571         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 572         seq_printf(m, "  PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 573         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm);
 574         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir);
 575         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr);
 576         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone);
 577         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd);
 578         if (INTEL_INFO(dev)->gen >= 4) {
 579                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps);
 580                 seq_printf(m, "  INSTDONE1: 0x%08x\n", error->instdone1);
 581         }
 582         seq_printf(m, "seqno: 0x%08x\n", error->seqno);
 583
 584         if (error->active_bo_count) {
 585                 seq_printf(m, "Buffers [%d]:\n", error->active_bo_count);
 586
 587                 for (i = 0; i < error->active_bo_count; i++) {
 588                         seq_printf(m, "  %08x %8zd %08x %08x %08x%s%s%s%s",
 589                                    error->active_bo[i].gtt_offset,
 590                                    error->active_bo[i].size,
 591                                    error->active_bo[i].read_domains,
 592                                    error->active_bo[i].write_domain,
 593                                    error->active_bo[i].seqno,
 594                                    pin_flag(error->active_bo[i].pinned),
 595                                    tiling_flag(error->active_bo[i].tiling),
 596                                    dirty_flag(error->active_bo[i].dirty),
 597                                    purgeable_flag(error->active_bo[i].purgeable));
 598
 599                         if (error->active_bo[i].name)
 600                                 seq_printf(m, " (name: %d)", error->active_bo[i].name);
 601                         if (error->active_bo[i].fence_reg != I915_FENCE_REG_NONE)
 602                                 seq_printf(m, " (fence: %d)", error->active_bo[i].fence_reg);
 603
 604                         seq_printf(m, "\n");
 605                 }
 606         }
 607
 608         for (i = 0; i < ARRAY_SIZE(error->batchbuffer); i++) {
 609                 if (error->batchbuffer[i]) {
 610                         struct drm_i915_error_object *obj = error->batchbuffer[i];
 611
 612                         seq_printf(m, "--- gtt_offset = 0x%08x\n", obj->gtt_offset);
 613                         offset = 0;
 614                         for (page = 0; page < obj->page_count; page++) {
 615                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 616                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 617                                         offset += 4;
 618                                 }
 619                         }
 620                 }
 621         }
 622
 623         if (error->ringbuffer) {
 624                 struct drm_i915_error_object *obj = error->ringbuffer;
 625
 626                 seq_printf(m, "--- ringbuffer = 0x%08x\n", obj->gtt_offset);
 627                 offset = 0;
 628                 for (page = 0; page < obj->page_count; page++) {
 629                         for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 630                                 seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 631                                 offset += 4;
 632                         }
 633                 }
 634         }
 635
 636         if (error->overlay)
 637                 intel_overlay_print_error_state(m, error->overlay);
 638
 639 out:
 640         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
 641
 642         return 0;
 643 }
 644
 645 static int i915_rstdby_delays(struct seq_file *m, void *unused)
 646 {
 647         struct drm_info_node *node = (struct drm_info_node *) m->private;
 648         struct drm_device *dev = node->minor->dev;
 649         drm_i915_private_t *dev_priv = dev->dev_private;
 650         u16 crstanddelay = I915_READ16(CRSTANDVID);
 651
 652         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
 653
 654         return 0;
 655 }
 656
 657 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
 658 {
 659         struct drm_info_node *node = (struct drm_info_node *) m->private;
 660         struct drm_device *dev = node->minor->dev;
 661         drm_i915_private_t *dev_priv = dev->dev_private;
 662         u16 rgvswctl = I915_READ16(MEMSWCTL);
 663         u16 rgvstat = I915_READ16(MEMSTAT_ILK);
 664
 665         seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 666         seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
 667         seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 668                    MEMSTAT_VID_SHIFT);
 669         seq_printf(m, "Current P-state: %d\n",
 670                    (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
 671
 672         return 0;
 673 }
 674
 675 static int i915_delayfreq_table(struct seq_file *m, void *unused)
 676 {
 677         struct drm_info_node *node = (struct drm_info_node *) m->private;
 678         struct drm_device *dev = node->minor->dev;
 679         drm_i915_private_t *dev_priv = dev->dev_private;
 680         u32 delayfreq;
 681         int i;
 682
 683         for (i = 0; i < 16; i++) {
 684                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
 685                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
 686                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
 687         }
 688
 689         return 0;
 690 }
 691
 692 static inline int MAP_TO_MV(int map)
 693 {
 694         return 1250 - (map * 25);
 695 }
 696
 697 static int i915_inttoext_table(struct seq_file *m, void *unused)
 698 {
 699         struct drm_info_node *node = (struct drm_info_node *) m->private;
 700         struct drm_device *dev = node->minor->dev;
 701         drm_i915_private_t *dev_priv = dev->dev_private;
 702         u32 inttoext;
 703         int i;
 704
 705         for (i = 1; i <= 32; i++) {
 706                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
 707                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
 708         }
 709
 710         return 0;
 711 }
 712
 713 static int i915_drpc_info(struct seq_file *m, void *unused)
 714 {
 715         struct drm_info_node *node = (struct drm_info_node *) m->private;
 716         struct drm_device *dev = node->minor->dev;
 717         drm_i915_private_t *dev_priv = dev->dev_private;
 718         u32 rgvmodectl = I915_READ(MEMMODECTL);
 719         u32 rstdbyctl = I915_READ(MCHBAR_RENDER_STANDBY);
 720         u16 crstandvid = I915_READ16(CRSTANDVID);
 721
 722         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
 723                    "yes" : "no");
 724         seq_printf(m, "Boost freq: %d\n",
 725                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
 726                    MEMMODE_BOOST_FREQ_SHIFT);
 727         seq_printf(m, "HW control enabled: %s\n",
 728                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
 729         seq_printf(m, "SW control enabled: %s\n",
 730                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
 731         seq_printf(m, "Gated voltage change: %s\n",
 732                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
 733         seq_printf(m, "Starting frequency: P%d\n",
 734                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
 735         seq_printf(m, "Max P-state: P%d\n",
 736                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
 737         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
 738         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
 739         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
 740         seq_printf(m, "Render standby enabled: %s\n",
 741                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
 742
 743         return 0;
 744 }
 745
 746 static int i915_fbc_status(struct seq_file *m, void *unused)
 747 {
 748         struct drm_info_node *node = (struct drm_info_node *) m->private;
 749         struct drm_device *dev = node->minor->dev;
 750         drm_i915_private_t *dev_priv = dev->dev_private;
 751
 752         if (!I915_HAS_FBC(dev)) {
 753                 seq_printf(m, "FBC unsupported on this chipset\n");
 754                 return 0;
 755         }
 756
 757         if (intel_fbc_enabled(dev)) {
 758                 seq_printf(m, "FBC enabled\n");
 759         } else {
 760                 seq_printf(m, "FBC disabled: ");
 761                 switch (dev_priv->no_fbc_reason) {
 762                 case FBC_NO_OUTPUT:
 763                         seq_printf(m, "no outputs");
 764                         break;
 765                 case FBC_STOLEN_TOO_SMALL:
 766                         seq_printf(m, "not enough stolen memory");
 767                         break;
 768                 case FBC_UNSUPPORTED_MODE:
 769                         seq_printf(m, "mode not supported");
 770                         break;
 771                 case FBC_MODE_TOO_LARGE:
 772                         seq_printf(m, "mode too large");
 773                         break;
 774                 case FBC_BAD_PLANE:
 775                         seq_printf(m, "FBC unsupported on plane");
 776                         break;
 777                 case FBC_NOT_TILED:
 778                         seq_printf(m, "scanout buffer not tiled");
 779                         break;
 780                 case FBC_MULTIPLE_PIPES:
 781                         seq_printf(m, "multiple pipes are enabled");
 782                         break;
 783                 default:
 784                         seq_printf(m, "unknown reason");
 785                 }
 786                 seq_printf(m, "\n");
 787         }
 788         return 0;
 789 }
 790
 791 static int i915_sr_status(struct seq_file *m, void *unused)
 792 {
 793         struct drm_info_node *node = (struct drm_info_node *) m->private;
 794         struct drm_device *dev = node->minor->dev;
 795         drm_i915_private_t *dev_priv = dev->dev_private;
 796         bool sr_enabled = false;
 797
 798         if (IS_IRONLAKE(dev))
 799                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
 800         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
 801                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
 802         else if (IS_I915GM(dev))
 803                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
 804         else if (IS_PINEVIEW(dev))
 805                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
 806
 807         seq_printf(m, "self-refresh: %s\n",
 808                    sr_enabled ? "enabled" : "disabled");
 809
 810         return 0;
 811 }
 812
 813 static int i915_emon_status(struct seq_file *m, void *unused)
 814 {
 815         struct drm_info_node *node = (struct drm_info_node *) m->private;
 816         struct drm_device *dev = node->minor->dev;
 817         drm_i915_private_t *dev_priv = dev->dev_private;
 818         unsigned long temp, chipset, gfx;
 819         int ret;
 820
 821         ret = mutex_lock_interruptible(&dev->struct_mutex);
 822         if (ret)
 823                 return ret;
 824
 825         temp = i915_mch_val(dev_priv);
 826         chipset = i915_chipset_val(dev_priv);
 827         gfx = i915_gfx_val(dev_priv);
 828         mutex_unlock(&dev->struct_mutex);
 829
 830         seq_printf(m, "GMCH temp: %ld\n", temp);
 831         seq_printf(m, "Chipset power: %ld\n", chipset);
 832         seq_printf(m, "GFX power: %ld\n", gfx);
 833         seq_printf(m, "Total power: %ld\n", chipset + gfx);
 834
 835         return 0;
 836 }
 837
 838 static int i915_gfxec(struct seq_file *m, void *unused)
 839 {
 840         struct drm_info_node *node = (struct drm_info_node *) m->private;
 841         struct drm_device *dev = node->minor->dev;
 842         drm_i915_private_t *dev_priv = dev->dev_private;
 843
 844         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
 845
 846         return 0;
 847 }
 848
 849 static int i915_opregion(struct seq_file *m, void *unused)
 850 {
 851         struct drm_info_node *node = (struct drm_info_node *) m->private;
 852         struct drm_device *dev = node->minor->dev;
 853         drm_i915_private_t *dev_priv = dev->dev_private;
 854         struct intel_opregion *opregion = &dev_priv->opregion;
 855         int ret;
 856
 857         ret = mutex_lock_interruptible(&dev->struct_mutex);
 858         if (ret)
 859                 return ret;
 860
 861         if (opregion->header)
 862                 seq_write(m, opregion->header, OPREGION_SIZE);
 863
 864         mutex_unlock(&dev->struct_mutex);
 865
 866         return 0;
 867 }
 868
 869 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
 870 {
 871         struct drm_info_node *node = (struct drm_info_node *) m->private;
 872         struct drm_device *dev = node->minor->dev;
 873         drm_i915_private_t *dev_priv = dev->dev_private;
 874         struct intel_fbdev *ifbdev;
 875         struct intel_framebuffer *fb;
 876         int ret;
 877
 878         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
 879         if (ret)
 880                 return ret;
 881
 882         ifbdev = dev_priv->fbdev;
 883         fb = to_intel_framebuffer(ifbdev->helper.fb);
 884
 885         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
 886                    fb->base.width,
 887                    fb->base.height,
 888                    fb->base.depth,
 889                    fb->base.bits_per_pixel);
 890         describe_obj(m, to_intel_bo(fb->obj));
 891         seq_printf(m, "\n");
 892
 893         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
 894                 if (&fb->base == ifbdev->helper.fb)
 895                         continue;
 896
 897                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
 898                            fb->base.width,
 899                            fb->base.height,
 900                            fb->base.depth,
 901                            fb->base.bits_per_pixel);
 902                 describe_obj(m, to_intel_bo(fb->obj));
 903                 seq_printf(m, "\n");
 904         }
 905
 906         mutex_unlock(&dev->mode_config.mutex);
 907
 908         return 0;
 909 }
 910
 911 static int
 912 i915_wedged_open(struct inode *inode,
 913                  struct file *filp)
 914 {
 915         filp->private_data = inode->i_private;
 916         return 0;
 917 }
 918
 919 static ssize_t
 920 i915_wedged_read(struct file *filp,
 921                  char __user *ubuf,
 922                  size_t max,
 923                  loff_t *ppos)
 924 {
 925         struct drm_device *dev = filp->private_data;
 926         drm_i915_private_t *dev_priv = dev->dev_private;
 927         char buf[80];
 928         int len;
 929
 930         len = snprintf(buf, sizeof (buf),
 931                        "wedged :  %d\n",
 932                        atomic_read(&dev_priv->mm.wedged));
 933
 934         if (len > sizeof (buf))
 935                 len = sizeof (buf);
 936
 937         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
 938 }
 939
 940 static ssize_t
 941 i915_wedged_write(struct file *filp,
 942                   const char __user *ubuf,
 943                   size_t cnt,
 944                   loff_t *ppos)
 945 {
 946         struct drm_device *dev = filp->private_data;
 947         drm_i915_private_t *dev_priv = dev->dev_private;
 948         char buf[20];
 949         int val = 1;
 950
 951         if (cnt > 0) {
 952                 if (cnt > sizeof (buf) - 1)
 953                         return -EINVAL;
 954
 955                 if (copy_from_user(buf, ubuf, cnt))
 956                         return -EFAULT;
 957                 buf[cnt] = 0;
 958
 959                 val = simple_strtoul(buf, NULL, 0);
 960         }
 961
 962         DRM_INFO("Manually setting wedged to %d\n", val);
 963
 964         atomic_set(&dev_priv->mm.wedged, val);
 965         if (val) {
 966                 wake_up_all(&dev_priv->irq_queue);
 967                 queue_work(dev_priv->wq, &dev_priv->error_work);
 968         }
 969
 970         return cnt;
 971 }
 972
 973 static const struct file_operations i915_wedged_fops = {
 974         .owner = THIS_MODULE,
 975         .open = i915_wedged_open,
 976         .read = i915_wedged_read,
 977         .write = i915_wedged_write,
 978 };
 979
 980 /* As the drm_debugfs_init() routines are called before dev->dev_private is
 981  * allocated we need to hook into the minor for release. */
 982 static int
 983 drm_add_fake_info_node(struct drm_minor *minor,
 984                        struct dentry *ent,
 985                        const void *key)
 986 {
 987         struct drm_info_node *node;
 988
 989         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
 990         if (node == NULL) {
 991                 debugfs_remove(ent);
 992                 return -ENOMEM;
 993         }
 994
 995         node->minor = minor;
 996         node->dent = ent;
 997         node->info_ent = (void *) key;
 998         list_add(&node->list, &minor->debugfs_nodes.list);
 999
1000         return 0;
1001 }
1002
1003 static int i915_wedged_create(struct dentry *root, struct drm_minor *minor)
1004 {
1005         struct drm_device *dev = minor->dev;
1006         struct dentry *ent;
1007
1008         ent = debugfs_create_file("i915_wedged",
1009                                   S_IRUGO | S_IWUSR,
1010                                   root, dev,
1011                                   &i915_wedged_fops);
1012         if (IS_ERR(ent))
1013                 return PTR_ERR(ent);
1014
1015         return drm_add_fake_info_node(minor, ent, &i915_wedged_fops);
1016 }
1017
1018 static struct drm_info_list i915_debugfs_list[] = {
1019         {"i915_capabilities", i915_capabilities, 0, 0},
1020         {"i915_gem_objects", i915_gem_object_info, 0},
1021         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
1022         {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
1023         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
1024         {"i915_gem_pinned", i915_gem_object_list_info, 0, (void *) PINNED_LIST},
1025         {"i915_gem_deferred_free", i915_gem_object_list_info, 0, (void *) DEFERRED_FREE_LIST},
1026         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
1027         {"i915_gem_request", i915_gem_request_info, 0},
1028         {"i915_gem_seqno", i915_gem_seqno_info, 0},
1029         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
1030         {"i915_gem_interrupt", i915_interrupt_info, 0},
1031         {"i915_gem_hws", i915_hws_info, 0},
1032         {"i915_ringbuffer_data", i915_ringbuffer_data, 0},
1033         {"i915_ringbuffer_info", i915_ringbuffer_info, 0},
1034         {"i915_batchbuffers", i915_batchbuffer_info, 0},
1035         {"i915_error_state", i915_error_state, 0},
1036         {"i915_rstdby_delays", i915_rstdby_delays, 0},
1037         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
1038         {"i915_delayfreq_table", i915_delayfreq_table, 0},
1039         {"i915_inttoext_table", i915_inttoext_table, 0},
1040         {"i915_drpc_info", i915_drpc_info, 0},
1041         {"i915_emon_status", i915_emon_status, 0},
1042         {"i915_gfxec", i915_gfxec, 0},
1043         {"i915_fbc_status", i915_fbc_status, 0},
1044         {"i915_sr_status", i915_sr_status, 0},
1045         {"i915_opregion", i915_opregion, 0},
1046         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
1047 };
1048 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
1049
1050 int i915_debugfs_init(struct drm_minor *minor)
1051 {
1052         int ret;
1053
1054         ret = i915_wedged_create(minor->debugfs_root, minor);
1055         if (ret)
1056                 return ret;
1057
1058         return drm_debugfs_create_files(i915_debugfs_list,
1059                                         I915_DEBUGFS_ENTRIES,
1060                                         minor->debugfs_root, minor);
1061 }
1062
1063 void i915_debugfs_cleanup(struct drm_minor *minor)
1064 {
1065         drm_debugfs_remove_files(i915_debugfs_list,
1066                                  I915_DEBUGFS_ENTRIES, minor);
1067         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
1068                                  1, minor);
1069 }
1070
1071 #endif /* CONFIG_DEBUG_FS */