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         RENDER_LIST,
  45         BSD_LIST,
  46         FLUSHING_LIST,
  47         INACTIVE_LIST,
  48         PINNED_LIST,
  49         DEFERRED_FREE_LIST,
  50 };
  51
  52 static const char *yesno(int v)
  53 {
  54         return v ? "yes" : "no";
  55 }
  56
  57 static int i915_capabilities(struct seq_file *m, void *data)
  58 {
  59         struct drm_info_node *node = (struct drm_info_node *) m->private;
  60         struct drm_device *dev = node->minor->dev;
  61         const struct intel_device_info *info = INTEL_INFO(dev);
  62
  63         seq_printf(m, "gen: %d\n", info->gen);
  64 #define B(x) seq_printf(m, #x ": %s\n", yesno(info->x))
  65         B(is_mobile);
  66         B(is_i85x);
  67         B(is_i915g);
  68         B(is_i945gm);
  69         B(is_g33);
  70         B(need_gfx_hws);
  71         B(is_g4x);
  72         B(is_pineview);
  73         B(is_broadwater);
  74         B(is_crestline);
  75         B(is_ironlake);
  76         B(has_fbc);
  77         B(has_rc6);
  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 #undef B
  85
  86         return 0;
  87 }
  88
  89 static const char *get_pin_flag(struct drm_i915_gem_object *obj_priv)
  90 {
  91         if (obj_priv->user_pin_count > 0)
  92                 return "P";
  93         else if (obj_priv->pin_count > 0)
  94                 return "p";
  95         else
  96                 return " ";
  97 }
  98
  99 static const char *get_tiling_flag(struct drm_i915_gem_object *obj_priv)
 100 {
 101     switch (obj_priv->tiling_mode) {
 102     default:
 103     case I915_TILING_NONE: return " ";
 104     case I915_TILING_X: return "X";
 105     case I915_TILING_Y: return "Y";
 106     }
 107 }
 108
 109 static void
 110 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 111 {
 112         seq_printf(m, "%p: %s%s %8zd %08x %08x %d%s%s",
 113                    &obj->base,
 114                    get_pin_flag(obj),
 115                    get_tiling_flag(obj),
 116                    obj->base.size,
 117                    obj->base.read_domains,
 118                    obj->base.write_domain,
 119                    obj->last_rendering_seqno,
 120                    obj->dirty ? " dirty" : "",
 121                    obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
 122         if (obj->base.name)
 123                 seq_printf(m, " (name: %d)", obj->base.name);
 124         if (obj->fence_reg != I915_FENCE_REG_NONE)
 125                 seq_printf(m, " (fence: %d)", obj->fence_reg);
 126         if (obj->gtt_space != NULL)
 127                 seq_printf(m, " (gtt_offset: %08x)", obj->gtt_offset);
 128 }
 129
 130 static int i915_gem_object_list_info(struct seq_file *m, void *data)
 131 {
 132         struct drm_info_node *node = (struct drm_info_node *) m->private;
 133         uintptr_t list = (uintptr_t) node->info_ent->data;
 134         struct list_head *head;
 135         struct drm_device *dev = node->minor->dev;
 136         drm_i915_private_t *dev_priv = dev->dev_private;
 137         struct drm_i915_gem_object *obj_priv;
 138         size_t total_obj_size, total_gtt_size;
 139         int count, ret;
 140
 141         ret = mutex_lock_interruptible(&dev->struct_mutex);
 142         if (ret)
 143                 return ret;
 144
 145         switch (list) {
 146         case RENDER_LIST:
 147                 seq_printf(m, "Render:\n");
 148                 head = &dev_priv->render_ring.active_list;
 149                 break;
 150         case BSD_LIST:
 151                 seq_printf(m, "BSD:\n");
 152                 head = &dev_priv->bsd_ring.active_list;
 153                 break;
 154         case INACTIVE_LIST:
 155                 seq_printf(m, "Inactive:\n");
 156                 head = &dev_priv->mm.inactive_list;
 157                 break;
 158         case PINNED_LIST:
 159                 seq_printf(m, "Pinned:\n");
 160                 head = &dev_priv->mm.pinned_list;
 161                 break;
 162         case FLUSHING_LIST:
 163                 seq_printf(m, "Flushing:\n");
 164                 head = &dev_priv->mm.flushing_list;
 165                 break;
 166         case DEFERRED_FREE_LIST:
 167                 seq_printf(m, "Deferred free:\n");
 168                 head = &dev_priv->mm.deferred_free_list;
 169                 break;
 170         default:
 171                 mutex_unlock(&dev->struct_mutex);
 172                 return -EINVAL;
 173         }
 174
 175         total_obj_size = total_gtt_size = count = 0;
 176         list_for_each_entry(obj_priv, head, list) {
 177                 seq_printf(m, "   ");
 178                 describe_obj(m, obj_priv);
 179                 seq_printf(m, "\n");
 180                 total_obj_size += obj_priv->base.size;
 181                 total_gtt_size += obj_priv->gtt_space->size;
 182                 count++;
 183         }
 184         mutex_unlock(&dev->struct_mutex);
 185
 186         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 187                    count, total_obj_size, total_gtt_size);
 188         return 0;
 189 }
 190
 191 static int i915_gem_object_info(struct seq_file *m, void* data)
 192 {
 193         struct drm_info_node *node = (struct drm_info_node *) m->private;
 194         struct drm_device *dev = node->minor->dev;
 195         struct drm_i915_private *dev_priv = dev->dev_private;
 196         int ret;
 197
 198         ret = mutex_lock_interruptible(&dev->struct_mutex);
 199         if (ret)
 200                 return ret;
 201
 202         seq_printf(m, "%u objects\n", dev_priv->mm.object_count);
 203         seq_printf(m, "%zu object bytes\n", dev_priv->mm.object_memory);
 204         seq_printf(m, "%u pinned\n", dev_priv->mm.pin_count);
 205         seq_printf(m, "%zu pin bytes\n", dev_priv->mm.pin_memory);
 206         seq_printf(m, "%u objects in gtt\n", dev_priv->mm.gtt_count);
 207         seq_printf(m, "%zu gtt bytes\n", dev_priv->mm.gtt_memory);
 208         seq_printf(m, "%zu gtt total\n", dev_priv->mm.gtt_total);
 209
 210         mutex_unlock(&dev->struct_mutex);
 211
 212         return 0;
 213 }
 214
 215
 216 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
 217 {
 218         struct drm_info_node *node = (struct drm_info_node *) m->private;
 219         struct drm_device *dev = node->minor->dev;
 220         unsigned long flags;
 221         struct intel_crtc *crtc;
 222
 223         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
 224                 const char *pipe = crtc->pipe ? "B" : "A";
 225                 const char *plane = crtc->plane ? "B" : "A";
 226                 struct intel_unpin_work *work;
 227
 228                 spin_lock_irqsave(&dev->event_lock, flags);
 229                 work = crtc->unpin_work;
 230                 if (work == NULL) {
 231                         seq_printf(m, "No flip due on pipe %s (plane %s)\n",
 232                                    pipe, plane);
 233                 } else {
 234                         if (!work->pending) {
 235                                 seq_printf(m, "Flip queued on pipe %s (plane %s)\n",
 236                                            pipe, plane);
 237                         } else {
 238                                 seq_printf(m, "Flip pending (waiting for vsync) on pipe %s (plane %s)\n",
 239                                            pipe, plane);
 240                         }
 241                         if (work->enable_stall_check)
 242                                 seq_printf(m, "Stall check enabled, ");
 243                         else
 244                                 seq_printf(m, "Stall check waiting for page flip ioctl, ");
 245                         seq_printf(m, "%d prepares\n", work->pending);
 246
 247                         if (work->old_fb_obj) {
 248                                 struct drm_i915_gem_object *obj_priv = to_intel_bo(work->old_fb_obj);
 249                                 if(obj_priv)
 250                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj_priv->gtt_offset );
 251                         }
 252                         if (work->pending_flip_obj) {
 253                                 struct drm_i915_gem_object *obj_priv = to_intel_bo(work->pending_flip_obj);
 254                                 if(obj_priv)
 255                                         seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj_priv->gtt_offset );
 256                         }
 257                 }
 258                 spin_unlock_irqrestore(&dev->event_lock, flags);
 259         }
 260
 261         return 0;
 262 }
 263
 264 static int i915_gem_request_info(struct seq_file *m, void *data)
 265 {
 266         struct drm_info_node *node = (struct drm_info_node *) m->private;
 267         struct drm_device *dev = node->minor->dev;
 268         drm_i915_private_t *dev_priv = dev->dev_private;
 269         struct drm_i915_gem_request *gem_request;
 270         int ret;
 271
 272         ret = mutex_lock_interruptible(&dev->struct_mutex);
 273         if (ret)
 274                 return ret;
 275
 276         seq_printf(m, "Request:\n");
 277         list_for_each_entry(gem_request, &dev_priv->render_ring.request_list,
 278                         list) {
 279                 seq_printf(m, "    %d @ %d\n",
 280                            gem_request->seqno,
 281                            (int) (jiffies - gem_request->emitted_jiffies));
 282         }
 283         mutex_unlock(&dev->struct_mutex);
 284
 285         return 0;
 286 }
 287
 288 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 289 {
 290         struct drm_info_node *node = (struct drm_info_node *) m->private;
 291         struct drm_device *dev = node->minor->dev;
 292         drm_i915_private_t *dev_priv = dev->dev_private;
 293         int ret;
 294
 295         ret = mutex_lock_interruptible(&dev->struct_mutex);
 296         if (ret)
 297                 return ret;
 298
 299         if (dev_priv->render_ring.status_page.page_addr != NULL) {
 300                 seq_printf(m, "Current sequence: %d\n",
 301                            dev_priv->render_ring.get_seqno(dev, &dev_priv->render_ring));
 302         } else {
 303                 seq_printf(m, "Current sequence: hws uninitialized\n");
 304         }
 305         seq_printf(m, "Waiter sequence:  %d\n",
 306                         dev_priv->mm.waiting_gem_seqno);
 307         seq_printf(m, "IRQ sequence:     %d\n", dev_priv->mm.irq_gem_seqno);
 308
 309         mutex_unlock(&dev->struct_mutex);
 310
 311         return 0;
 312 }
 313
 314
 315 static int i915_interrupt_info(struct seq_file *m, void *data)
 316 {
 317         struct drm_info_node *node = (struct drm_info_node *) m->private;
 318         struct drm_device *dev = node->minor->dev;
 319         drm_i915_private_t *dev_priv = dev->dev_private;
 320         int ret;
 321
 322         ret = mutex_lock_interruptible(&dev->struct_mutex);
 323         if (ret)
 324                 return ret;
 325
 326         if (!HAS_PCH_SPLIT(dev)) {
 327                 seq_printf(m, "Interrupt enable:    %08x\n",
 328                            I915_READ(IER));
 329                 seq_printf(m, "Interrupt identity:  %08x\n",
 330                            I915_READ(IIR));
 331                 seq_printf(m, "Interrupt mask:      %08x\n",
 332                            I915_READ(IMR));
 333                 seq_printf(m, "Pipe A stat:         %08x\n",
 334                            I915_READ(PIPEASTAT));
 335                 seq_printf(m, "Pipe B stat:         %08x\n",
 336                            I915_READ(PIPEBSTAT));
 337         } else {
 338                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
 339                            I915_READ(DEIER));
 340                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
 341                            I915_READ(DEIIR));
 342                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
 343                            I915_READ(DEIMR));
 344                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
 345                            I915_READ(SDEIER));
 346                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
 347                            I915_READ(SDEIIR));
 348                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
 349                            I915_READ(SDEIMR));
 350                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
 351                            I915_READ(GTIER));
 352                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
 353                            I915_READ(GTIIR));
 354                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
 355                            I915_READ(GTIMR));
 356         }
 357         seq_printf(m, "Interrupts received: %d\n",
 358                    atomic_read(&dev_priv->irq_received));
 359         if (dev_priv->render_ring.status_page.page_addr != NULL) {
 360                 seq_printf(m, "Current sequence:    %d\n",
 361                            dev_priv->render_ring.get_seqno(dev, &dev_priv->render_ring));
 362         } else {
 363                 seq_printf(m, "Current sequence:    hws uninitialized\n");
 364         }
 365         seq_printf(m, "Waiter sequence:     %d\n",
 366                    dev_priv->mm.waiting_gem_seqno);
 367         seq_printf(m, "IRQ sequence:        %d\n",
 368                    dev_priv->mm.irq_gem_seqno);
 369         mutex_unlock(&dev->struct_mutex);
 370
 371         return 0;
 372 }
 373
 374 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 375 {
 376         struct drm_info_node *node = (struct drm_info_node *) m->private;
 377         struct drm_device *dev = node->minor->dev;
 378         drm_i915_private_t *dev_priv = dev->dev_private;
 379         int i, ret;
 380
 381         ret = mutex_lock_interruptible(&dev->struct_mutex);
 382         if (ret)
 383                 return ret;
 384
 385         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 386         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 387         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 388                 struct drm_gem_object *obj = dev_priv->fence_regs[i].obj;
 389
 390                 if (obj == NULL) {
 391                         seq_printf(m, "Fenced object[%2d] = unused\n", i);
 392                 } else {
 393                         struct drm_i915_gem_object *obj_priv;
 394
 395                         obj_priv = to_intel_bo(obj);
 396                         seq_printf(m, "Fenced object[%2d] = %p: %s "
 397                                    "%08x %08zx %08x %s %08x %08x %d",
 398                                    i, obj, get_pin_flag(obj_priv),
 399                                    obj_priv->gtt_offset,
 400                                    obj->size, obj_priv->stride,
 401                                    get_tiling_flag(obj_priv),
 402                                    obj->read_domains, obj->write_domain,
 403                                    obj_priv->last_rendering_seqno);
 404                         if (obj->name)
 405                                 seq_printf(m, " (name: %d)", obj->name);
 406                         seq_printf(m, "\n");
 407                 }
 408         }
 409         mutex_unlock(&dev->struct_mutex);
 410
 411         return 0;
 412 }
 413
 414 static int i915_hws_info(struct seq_file *m, void *data)
 415 {
 416         struct drm_info_node *node = (struct drm_info_node *) m->private;
 417         struct drm_device *dev = node->minor->dev;
 418         drm_i915_private_t *dev_priv = dev->dev_private;
 419         int i;
 420         volatile u32 *hws;
 421
 422         hws = (volatile u32 *)dev_priv->render_ring.status_page.page_addr;
 423         if (hws == NULL)
 424                 return 0;
 425
 426         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 427                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 428                            i * 4,
 429                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 430         }
 431         return 0;
 432 }
 433
 434 static void i915_dump_object(struct seq_file *m,
 435                              struct io_mapping *mapping,
 436                              struct drm_i915_gem_object *obj_priv)
 437 {
 438         int page, page_count, i;
 439
 440         page_count = obj_priv->base.size / PAGE_SIZE;
 441         for (page = 0; page < page_count; page++) {
 442                 u32 *mem = io_mapping_map_wc(mapping,
 443                                              obj_priv->gtt_offset + page * PAGE_SIZE);
 444                 for (i = 0; i < PAGE_SIZE; i += 4)
 445                         seq_printf(m, "%08x :  %08x\n", i, mem[i / 4]);
 446                 io_mapping_unmap(mem);
 447         }
 448 }
 449
 450 static int i915_batchbuffer_info(struct seq_file *m, void *data)
 451 {
 452         struct drm_info_node *node = (struct drm_info_node *) m->private;
 453         struct drm_device *dev = node->minor->dev;
 454         drm_i915_private_t *dev_priv = dev->dev_private;
 455         struct drm_gem_object *obj;
 456         struct drm_i915_gem_object *obj_priv;
 457         int ret;
 458
 459         ret = mutex_lock_interruptible(&dev->struct_mutex);
 460         if (ret)
 461                 return ret;
 462
 463         list_for_each_entry(obj_priv, &dev_priv->render_ring.active_list,
 464                         list) {
 465                 obj = &obj_priv->base;
 466                 if (obj->read_domains & I915_GEM_DOMAIN_COMMAND) {
 467                     seq_printf(m, "--- gtt_offset = 0x%08x\n",
 468                                obj_priv->gtt_offset);
 469                     i915_dump_object(m, dev_priv->mm.gtt_mapping, obj_priv);
 470                 }
 471         }
 472
 473         mutex_unlock(&dev->struct_mutex);
 474
 475         return 0;
 476 }
 477
 478 static int i915_ringbuffer_data(struct seq_file *m, void *data)
 479 {
 480         struct drm_info_node *node = (struct drm_info_node *) m->private;
 481         struct drm_device *dev = node->minor->dev;
 482         drm_i915_private_t *dev_priv = dev->dev_private;
 483         int ret;
 484
 485         ret = mutex_lock_interruptible(&dev->struct_mutex);
 486         if (ret)
 487                 return ret;
 488
 489         if (!dev_priv->render_ring.gem_object) {
 490                 seq_printf(m, "No ringbuffer setup\n");
 491         } else {
 492                 u8 *virt = dev_priv->render_ring.virtual_start;
 493                 uint32_t off;
 494
 495                 for (off = 0; off < dev_priv->render_ring.size; off += 4) {
 496                         uint32_t *ptr = (uint32_t *)(virt + off);
 497                         seq_printf(m, "%08x :  %08x\n", off, *ptr);
 498                 }
 499         }
 500         mutex_unlock(&dev->struct_mutex);
 501
 502         return 0;
 503 }
 504
 505 static int i915_ringbuffer_info(struct seq_file *m, void *data)
 506 {
 507         struct drm_info_node *node = (struct drm_info_node *) m->private;
 508         struct drm_device *dev = node->minor->dev;
 509         drm_i915_private_t *dev_priv = dev->dev_private;
 510         unsigned int head, tail;
 511
 512         head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
 513         tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
 514
 515         seq_printf(m, "RingHead :  %08x\n", head);
 516         seq_printf(m, "RingTail :  %08x\n", tail);
 517         seq_printf(m, "RingSize :  %08lx\n", dev_priv->render_ring.size);
 518         seq_printf(m, "Acthd :     %08x\n", I915_READ(INTEL_INFO(dev)->gen >= 4 ? ACTHD_I965 : ACTHD));
 519
 520         return 0;
 521 }
 522
 523 static const char *pin_flag(int pinned)
 524 {
 525         if (pinned > 0)
 526                 return " P";
 527         else if (pinned < 0)
 528                 return " p";
 529         else
 530                 return "";
 531 }
 532
 533 static const char *tiling_flag(int tiling)
 534 {
 535         switch (tiling) {
 536         default:
 537         case I915_TILING_NONE: return "";
 538         case I915_TILING_X: return " X";
 539         case I915_TILING_Y: return " Y";
 540         }
 541 }
 542
 543 static const char *dirty_flag(int dirty)
 544 {
 545         return dirty ? " dirty" : "";
 546 }
 547
 548 static const char *purgeable_flag(int purgeable)
 549 {
 550         return purgeable ? " purgeable" : "";
 551 }
 552
 553 static int i915_error_state(struct seq_file *m, void *unused)
 554 {
 555         struct drm_info_node *node = (struct drm_info_node *) m->private;
 556         struct drm_device *dev = node->minor->dev;
 557         drm_i915_private_t *dev_priv = dev->dev_private;
 558         struct drm_i915_error_state *error;
 559         unsigned long flags;
 560         int i, page, offset, elt;
 561
 562         spin_lock_irqsave(&dev_priv->error_lock, flags);
 563         if (!dev_priv->first_error) {
 564                 seq_printf(m, "no error state collected\n");
 565                 goto out;
 566         }
 567
 568         error = dev_priv->first_error;
 569
 570         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 571                    error->time.tv_usec);
 572         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
 573         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 574         seq_printf(m, "  PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 575         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm);
 576         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir);
 577         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr);
 578         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone);
 579         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd);
 580         if (INTEL_INFO(dev)->gen >= 4) {
 581                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps);
 582                 seq_printf(m, "  INSTDONE1: 0x%08x\n", error->instdone1);
 583         }
 584         seq_printf(m, "seqno: 0x%08x\n", error->seqno);
 585
 586         if (error->active_bo_count) {
 587                 seq_printf(m, "Buffers [%d]:\n", error->active_bo_count);
 588
 589                 for (i = 0; i < error->active_bo_count; i++) {
 590                         seq_printf(m, "  %08x %8zd %08x %08x %08x%s%s%s%s",
 591                                    error->active_bo[i].gtt_offset,
 592                                    error->active_bo[i].size,
 593                                    error->active_bo[i].read_domains,
 594                                    error->active_bo[i].write_domain,
 595                                    error->active_bo[i].seqno,
 596                                    pin_flag(error->active_bo[i].pinned),
 597                                    tiling_flag(error->active_bo[i].tiling),
 598                                    dirty_flag(error->active_bo[i].dirty),
 599                                    purgeable_flag(error->active_bo[i].purgeable));
 600
 601                         if (error->active_bo[i].name)
 602                                 seq_printf(m, " (name: %d)", error->active_bo[i].name);
 603                         if (error->active_bo[i].fence_reg != I915_FENCE_REG_NONE)
 604                                 seq_printf(m, " (fence: %d)", error->active_bo[i].fence_reg);
 605
 606                         seq_printf(m, "\n");
 607                 }
 608         }
 609
 610         for (i = 0; i < ARRAY_SIZE(error->batchbuffer); i++) {
 611                 if (error->batchbuffer[i]) {
 612                         struct drm_i915_error_object *obj = error->batchbuffer[i];
 613
 614                         seq_printf(m, "--- gtt_offset = 0x%08x\n", obj->gtt_offset);
 615                         offset = 0;
 616                         for (page = 0; page < obj->page_count; page++) {
 617                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 618                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 619                                         offset += 4;
 620                                 }
 621                         }
 622                 }
 623         }
 624
 625         if (error->ringbuffer) {
 626                 struct drm_i915_error_object *obj = error->ringbuffer;
 627
 628                 seq_printf(m, "--- ringbuffer = 0x%08x\n", obj->gtt_offset);
 629                 offset = 0;
 630                 for (page = 0; page < obj->page_count; page++) {
 631                         for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 632                                 seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 633                                 offset += 4;
 634                         }
 635                 }
 636         }
 637
 638         if (error->overlay)
 639                 intel_overlay_print_error_state(m, error->overlay);
 640
 641 out:
 642         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
 643
 644         return 0;
 645 }
 646
 647 static int i915_rstdby_delays(struct seq_file *m, void *unused)
 648 {
 649         struct drm_info_node *node = (struct drm_info_node *) m->private;
 650         struct drm_device *dev = node->minor->dev;
 651         drm_i915_private_t *dev_priv = dev->dev_private;
 652         u16 crstanddelay = I915_READ16(CRSTANDVID);
 653
 654         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
 655
 656         return 0;
 657 }
 658
 659 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
 660 {
 661         struct drm_info_node *node = (struct drm_info_node *) m->private;
 662         struct drm_device *dev = node->minor->dev;
 663         drm_i915_private_t *dev_priv = dev->dev_private;
 664         u16 rgvswctl = I915_READ16(MEMSWCTL);
 665         u16 rgvstat = I915_READ16(MEMSTAT_ILK);
 666
 667         seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 668         seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
 669         seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 670                    MEMSTAT_VID_SHIFT);
 671         seq_printf(m, "Current P-state: %d\n",
 672                    (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
 673
 674         return 0;
 675 }
 676
 677 static int i915_delayfreq_table(struct seq_file *m, void *unused)
 678 {
 679         struct drm_info_node *node = (struct drm_info_node *) m->private;
 680         struct drm_device *dev = node->minor->dev;
 681         drm_i915_private_t *dev_priv = dev->dev_private;
 682         u32 delayfreq;
 683         int i;
 684
 685         for (i = 0; i < 16; i++) {
 686                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
 687                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
 688                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
 689         }
 690
 691         return 0;
 692 }
 693
 694 static inline int MAP_TO_MV(int map)
 695 {
 696         return 1250 - (map * 25);
 697 }
 698
 699 static int i915_inttoext_table(struct seq_file *m, void *unused)
 700 {
 701         struct drm_info_node *node = (struct drm_info_node *) m->private;
 702         struct drm_device *dev = node->minor->dev;
 703         drm_i915_private_t *dev_priv = dev->dev_private;
 704         u32 inttoext;
 705         int i;
 706
 707         for (i = 1; i <= 32; i++) {
 708                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
 709                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
 710         }
 711
 712         return 0;
 713 }
 714
 715 static int i915_drpc_info(struct seq_file *m, void *unused)
 716 {
 717         struct drm_info_node *node = (struct drm_info_node *) m->private;
 718         struct drm_device *dev = node->minor->dev;
 719         drm_i915_private_t *dev_priv = dev->dev_private;
 720         u32 rgvmodectl = I915_READ(MEMMODECTL);
 721         u32 rstdbyctl = I915_READ(MCHBAR_RENDER_STANDBY);
 722         u16 crstandvid = I915_READ16(CRSTANDVID);
 723
 724         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
 725                    "yes" : "no");
 726         seq_printf(m, "Boost freq: %d\n",
 727                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
 728                    MEMMODE_BOOST_FREQ_SHIFT);
 729         seq_printf(m, "HW control enabled: %s\n",
 730                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
 731         seq_printf(m, "SW control enabled: %s\n",
 732                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
 733         seq_printf(m, "Gated voltage change: %s\n",
 734                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
 735         seq_printf(m, "Starting frequency: P%d\n",
 736                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
 737         seq_printf(m, "Max P-state: P%d\n",
 738                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
 739         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
 740         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
 741         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
 742         seq_printf(m, "Render standby enabled: %s\n",
 743                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
 744
 745         return 0;
 746 }
 747
 748 static int i915_fbc_status(struct seq_file *m, void *unused)
 749 {
 750         struct drm_info_node *node = (struct drm_info_node *) m->private;
 751         struct drm_device *dev = node->minor->dev;
 752         drm_i915_private_t *dev_priv = dev->dev_private;
 753
 754         if (!I915_HAS_FBC(dev)) {
 755                 seq_printf(m, "FBC unsupported on this chipset\n");
 756                 return 0;
 757         }
 758
 759         if (intel_fbc_enabled(dev)) {
 760                 seq_printf(m, "FBC enabled\n");
 761         } else {
 762                 seq_printf(m, "FBC disabled: ");
 763                 switch (dev_priv->no_fbc_reason) {
 764                 case FBC_NO_OUTPUT:
 765                         seq_printf(m, "no outputs");
 766                         break;
 767                 case FBC_STOLEN_TOO_SMALL:
 768                         seq_printf(m, "not enough stolen memory");
 769                         break;
 770                 case FBC_UNSUPPORTED_MODE:
 771                         seq_printf(m, "mode not supported");
 772                         break;
 773                 case FBC_MODE_TOO_LARGE:
 774                         seq_printf(m, "mode too large");
 775                         break;
 776                 case FBC_BAD_PLANE:
 777                         seq_printf(m, "FBC unsupported on plane");
 778                         break;
 779                 case FBC_NOT_TILED:
 780                         seq_printf(m, "scanout buffer not tiled");
 781                         break;
 782                 case FBC_MULTIPLE_PIPES:
 783                         seq_printf(m, "multiple pipes are enabled");
 784                         break;
 785                 default:
 786                         seq_printf(m, "unknown reason");
 787                 }
 788                 seq_printf(m, "\n");
 789         }
 790         return 0;
 791 }
 792
 793 static int i915_sr_status(struct seq_file *m, void *unused)
 794 {
 795         struct drm_info_node *node = (struct drm_info_node *) m->private;
 796         struct drm_device *dev = node->minor->dev;
 797         drm_i915_private_t *dev_priv = dev->dev_private;
 798         bool sr_enabled = false;
 799
 800         if (IS_IRONLAKE(dev))
 801                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
 802         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
 803                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
 804         else if (IS_I915GM(dev))
 805                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
 806         else if (IS_PINEVIEW(dev))
 807                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
 808
 809         seq_printf(m, "self-refresh: %s\n",
 810                    sr_enabled ? "enabled" : "disabled");
 811
 812         return 0;
 813 }
 814
 815 static int i915_emon_status(struct seq_file *m, void *unused)
 816 {
 817         struct drm_info_node *node = (struct drm_info_node *) m->private;
 818         struct drm_device *dev = node->minor->dev;
 819         drm_i915_private_t *dev_priv = dev->dev_private;
 820         unsigned long temp, chipset, gfx;
 821         int ret;
 822
 823         ret = mutex_lock_interruptible(&dev->struct_mutex);
 824         if (ret)
 825                 return ret;
 826
 827         temp = i915_mch_val(dev_priv);
 828         chipset = i915_chipset_val(dev_priv);
 829         gfx = i915_gfx_val(dev_priv);
 830         mutex_unlock(&dev->struct_mutex);
 831
 832         seq_printf(m, "GMCH temp: %ld\n", temp);
 833         seq_printf(m, "Chipset power: %ld\n", chipset);
 834         seq_printf(m, "GFX power: %ld\n", gfx);
 835         seq_printf(m, "Total power: %ld\n", chipset + gfx);
 836
 837         return 0;
 838 }
 839
 840 static int i915_gfxec(struct seq_file *m, void *unused)
 841 {
 842         struct drm_info_node *node = (struct drm_info_node *) m->private;
 843         struct drm_device *dev = node->minor->dev;
 844         drm_i915_private_t *dev_priv = dev->dev_private;
 845
 846         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
 847
 848         return 0;
 849 }
 850
 851 static int i915_opregion(struct seq_file *m, void *unused)
 852 {
 853         struct drm_info_node *node = (struct drm_info_node *) m->private;
 854         struct drm_device *dev = node->minor->dev;
 855         drm_i915_private_t *dev_priv = dev->dev_private;
 856         struct intel_opregion *opregion = &dev_priv->opregion;
 857         int ret;
 858
 859         ret = mutex_lock_interruptible(&dev->struct_mutex);
 860         if (ret)
 861                 return ret;
 862
 863         if (opregion->header)
 864                 seq_write(m, opregion->header, OPREGION_SIZE);
 865
 866         mutex_unlock(&dev->struct_mutex);
 867
 868         return 0;
 869 }
 870
 871 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
 872 {
 873         struct drm_info_node *node = (struct drm_info_node *) m->private;
 874         struct drm_device *dev = node->minor->dev;
 875         drm_i915_private_t *dev_priv = dev->dev_private;
 876         struct intel_fbdev *ifbdev;
 877         struct intel_framebuffer *fb;
 878         int ret;
 879
 880         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
 881         if (ret)
 882                 return ret;
 883
 884         ifbdev = dev_priv->fbdev;
 885         fb = to_intel_framebuffer(ifbdev->helper.fb);
 886
 887         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
 888                    fb->base.width,
 889                    fb->base.height,
 890                    fb->base.depth,
 891                    fb->base.bits_per_pixel);
 892         describe_obj(m, to_intel_bo(fb->obj));
 893         seq_printf(m, "\n");
 894
 895         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
 896                 if (&fb->base == ifbdev->helper.fb)
 897                         continue;
 898
 899                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
 900                            fb->base.width,
 901                            fb->base.height,
 902                            fb->base.depth,
 903                            fb->base.bits_per_pixel);
 904                 describe_obj(m, to_intel_bo(fb->obj));
 905                 seq_printf(m, "\n");
 906         }
 907
 908         mutex_unlock(&dev->mode_config.mutex);
 909
 910         return 0;
 911 }
 912
 913 static int
 914 i915_wedged_open(struct inode *inode,
 915                  struct file *filp)
 916 {
 917         filp->private_data = inode->i_private;
 918         return 0;
 919 }
 920
 921 static ssize_t
 922 i915_wedged_read(struct file *filp,
 923                  char __user *ubuf,
 924                  size_t max,
 925                  loff_t *ppos)
 926 {
 927         struct drm_device *dev = filp->private_data;
 928         drm_i915_private_t *dev_priv = dev->dev_private;
 929         char buf[80];
 930         int len;
 931
 932         len = snprintf(buf, sizeof (buf),
 933                        "wedged :  %d\n",
 934                        atomic_read(&dev_priv->mm.wedged));
 935
 936         if (len > sizeof (buf))
 937                 len = sizeof (buf);
 938
 939         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
 940 }
 941
 942 static ssize_t
 943 i915_wedged_write(struct file *filp,
 944                   const char __user *ubuf,
 945                   size_t cnt,
 946                   loff_t *ppos)
 947 {
 948         struct drm_device *dev = filp->private_data;
 949         drm_i915_private_t *dev_priv = dev->dev_private;
 950         char buf[20];
 951         int val = 1;
 952
 953         if (cnt > 0) {
 954                 if (cnt > sizeof (buf) - 1)
 955                         return -EINVAL;
 956
 957                 if (copy_from_user(buf, ubuf, cnt))
 958                         return -EFAULT;
 959                 buf[cnt] = 0;
 960
 961                 val = simple_strtoul(buf, NULL, 0);
 962         }
 963
 964         DRM_INFO("Manually setting wedged to %d\n", val);
 965
 966         atomic_set(&dev_priv->mm.wedged, val);
 967         if (val) {
 968                 wake_up_all(&dev_priv->irq_queue);
 969                 queue_work(dev_priv->wq, &dev_priv->error_work);
 970         }
 971
 972         return cnt;
 973 }
 974
 975 static const struct file_operations i915_wedged_fops = {
 976         .owner = THIS_MODULE,
 977         .open = i915_wedged_open,
 978         .read = i915_wedged_read,
 979         .write = i915_wedged_write,
 980 };
 981
 982 /* As the drm_debugfs_init() routines are called before dev->dev_private is
 983  * allocated we need to hook into the minor for release. */
 984 static int
 985 drm_add_fake_info_node(struct drm_minor *minor,
 986                        struct dentry *ent,
 987                        const void *key)
 988 {
 989         struct drm_info_node *node;
 990
 991         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
 992         if (node == NULL) {
 993                 debugfs_remove(ent);
 994                 return -ENOMEM;
 995         }
 996
 997         node->minor = minor;
 998         node->dent = ent;
 999         node->info_ent = (void *) key;
1000         list_add(&node->list, &minor->debugfs_nodes.list);
1001
1002         return 0;
1003 }
1004
1005 static int i915_wedged_create(struct dentry *root, struct drm_minor *minor)
1006 {
1007         struct drm_device *dev = minor->dev;
1008         struct dentry *ent;
1009
1010         ent = debugfs_create_file("i915_wedged",
1011                                   S_IRUGO | S_IWUSR,
1012                                   root, dev,
1013                                   &i915_wedged_fops);
1014         if (IS_ERR(ent))
1015                 return PTR_ERR(ent);
1016
1017         return drm_add_fake_info_node(minor, ent, &i915_wedged_fops);
1018 }
1019
1020 static struct drm_info_list i915_debugfs_list[] = {
1021         {"i915_capabilities", i915_capabilities, 0, 0},
1022         {"i915_gem_objects", i915_gem_object_info, 0},
1023         {"i915_gem_render_active", i915_gem_object_list_info, 0, (void *) RENDER_LIST},
1024         {"i915_gem_bsd_active", i915_gem_object_list_info, 0, (void *) BSD_LIST},
1025         {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
1026         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
1027         {"i915_gem_pinned", i915_gem_object_list_info, 0, (void *) PINNED_LIST},
1028         {"i915_gem_deferred_free", i915_gem_object_list_info, 0, (void *) DEFERRED_FREE_LIST},
1029         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
1030         {"i915_gem_request", i915_gem_request_info, 0},
1031         {"i915_gem_seqno", i915_gem_seqno_info, 0},
1032         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
1033         {"i915_gem_interrupt", i915_interrupt_info, 0},
1034         {"i915_gem_hws", i915_hws_info, 0},
1035         {"i915_ringbuffer_data", i915_ringbuffer_data, 0},
1036         {"i915_ringbuffer_info", i915_ringbuffer_info, 0},
1037         {"i915_batchbuffers", i915_batchbuffer_info, 0},
1038         {"i915_error_state", i915_error_state, 0},
1039         {"i915_rstdby_delays", i915_rstdby_delays, 0},
1040         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
1041         {"i915_delayfreq_table", i915_delayfreq_table, 0},
1042         {"i915_inttoext_table", i915_inttoext_table, 0},
1043         {"i915_drpc_info", i915_drpc_info, 0},
1044         {"i915_emon_status", i915_emon_status, 0},
1045         {"i915_gfxec", i915_gfxec, 0},
1046         {"i915_fbc_status", i915_fbc_status, 0},
1047         {"i915_sr_status", i915_sr_status, 0},
1048         {"i915_opregion", i915_opregion, 0},
1049         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
1050 };
1051 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
1052
1053 int i915_debugfs_init(struct drm_minor *minor)
1054 {
1055         int ret;
1056
1057         ret = i915_wedged_create(minor->debugfs_root, minor);
1058         if (ret)
1059                 return ret;
1060
1061         return drm_debugfs_create_files(i915_debugfs_list,
1062                                         I915_DEBUGFS_ENTRIES,
1063                                         minor->debugfs_root, minor);
1064 }
1065
1066 void i915_debugfs_cleanup(struct drm_minor *minor)
1067 {
1068         drm_debugfs_remove_files(i915_debugfs_list,
1069                                  I915_DEBUGFS_ENTRIES, minor);
1070         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
1071                                  1, minor);
1072 }
1073
1074 #endif /* CONFIG_DEBUG_FS */