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(has_fbc);
  75         B(has_rc6);
  76         B(has_pipe_cxsr);
  77         B(has_hotplug);
  78         B(cursor_needs_physical);
  79         B(has_overlay);
  80         B(overlay_needs_physical);
  81         B(supports_tv);
  82         B(has_bsd_ring);
  83         B(has_blt_ring);
  84 #undef B
  85
  86         return 0;
  87 }
  88
  89 static const char *get_pin_flag(struct drm_i915_gem_object *obj_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         if (obj->ring != NULL)
 129                 seq_printf(m, " (%s)", obj->ring->name);
 130 }
 131
 132 static int i915_gem_object_list_info(struct seq_file *m, void *data)
 133 {
 134         struct drm_info_node *node = (struct drm_info_node *) m->private;
 135         uintptr_t list = (uintptr_t) node->info_ent->data;
 136         struct list_head *head;
 137         struct drm_device *dev = node->minor->dev;
 138         drm_i915_private_t *dev_priv = dev->dev_private;
 139         struct drm_i915_gem_object *obj_priv;
 140         size_t total_obj_size, total_gtt_size;
 141         int count, ret;
 142
 143         ret = mutex_lock_interruptible(&dev->struct_mutex);
 144         if (ret)
 145                 return ret;
 146
 147         switch (list) {
 148         case ACTIVE_LIST:
 149                 seq_printf(m, "Active:\n");
 150                 head = &dev_priv->mm.active_list;
 151                 break;
 152         case INACTIVE_LIST:
 153                 seq_printf(m, "Inactive:\n");
 154                 head = &dev_priv->mm.inactive_list;
 155                 break;
 156         case PINNED_LIST:
 157                 seq_printf(m, "Pinned:\n");
 158                 head = &dev_priv->mm.pinned_list;
 159                 break;
 160         case FLUSHING_LIST:
 161                 seq_printf(m, "Flushing:\n");
 162                 head = &dev_priv->mm.flushing_list;
 163                 break;
 164         case DEFERRED_FREE_LIST:
 165                 seq_printf(m, "Deferred free:\n");
 166                 head = &dev_priv->mm.deferred_free_list;
 167                 break;
 168         default:
 169                 mutex_unlock(&dev->struct_mutex);
 170                 return -EINVAL;
 171         }
 172
 173         total_obj_size = total_gtt_size = count = 0;
 174         list_for_each_entry(obj_priv, head, mm_list) {
 175                 seq_printf(m, "   ");
 176                 describe_obj(m, obj_priv);
 177                 seq_printf(m, "\n");
 178                 total_obj_size += obj_priv->base.size;
 179                 total_gtt_size += obj_priv->gtt_space->size;
 180                 count++;
 181         }
 182         mutex_unlock(&dev->struct_mutex);
 183
 184         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 185                    count, total_obj_size, total_gtt_size);
 186         return 0;
 187 }
 188
 189 static int i915_gem_object_info(struct seq_file *m, void* data)
 190 {
 191         struct drm_info_node *node = (struct drm_info_node *) m->private;
 192         struct drm_device *dev = node->minor->dev;
 193         struct drm_i915_private *dev_priv = dev->dev_private;
 194         int ret;
 195
 196         ret = mutex_lock_interruptible(&dev->struct_mutex);
 197         if (ret)
 198                 return ret;
 199
 200         seq_printf(m, "%u objects\n", dev_priv->mm.object_count);
 201         seq_printf(m, "%zu object bytes\n", dev_priv->mm.object_memory);
 202         seq_printf(m, "%u pinned\n", dev_priv->mm.pin_count);
 203         seq_printf(m, "%zu pin bytes\n", dev_priv->mm.pin_memory);
 204         seq_printf(m, "%u objects in gtt\n", dev_priv->mm.gtt_count);
 205         seq_printf(m, "%zu gtt bytes\n", dev_priv->mm.gtt_memory);
 206         seq_printf(m, "%zu gtt total\n", dev_priv->mm.gtt_total);
 207
 208         mutex_unlock(&dev->struct_mutex);
 209
 210         return 0;
 211 }
 212
 213
 214 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
 215 {
 216         struct drm_info_node *node = (struct drm_info_node *) m->private;
 217         struct drm_device *dev = node->minor->dev;
 218         unsigned long flags;
 219         struct intel_crtc *crtc;
 220
 221         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
 222                 const char *pipe = crtc->pipe ? "B" : "A";
 223                 const char *plane = crtc->plane ? "B" : "A";
 224                 struct intel_unpin_work *work;
 225
 226                 spin_lock_irqsave(&dev->event_lock, flags);
 227                 work = crtc->unpin_work;
 228                 if (work == NULL) {
 229                         seq_printf(m, "No flip due on pipe %s (plane %s)\n",
 230                                    pipe, plane);
 231                 } else {
 232                         if (!work->pending) {
 233                                 seq_printf(m, "Flip queued on pipe %s (plane %s)\n",
 234                                            pipe, plane);
 235                         } else {
 236                                 seq_printf(m, "Flip pending (waiting for vsync) on pipe %s (plane %s)\n",
 237                                            pipe, plane);
 238                         }
 239                         if (work->enable_stall_check)
 240                                 seq_printf(m, "Stall check enabled, ");
 241                         else
 242                                 seq_printf(m, "Stall check waiting for page flip ioctl, ");
 243                         seq_printf(m, "%d prepares\n", work->pending);
 244
 245                         if (work->old_fb_obj) {
 246                                 struct drm_i915_gem_object *obj_priv = to_intel_bo(work->old_fb_obj);
 247                                 if(obj_priv)
 248                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj_priv->gtt_offset );
 249                         }
 250                         if (work->pending_flip_obj) {
 251                                 struct drm_i915_gem_object *obj_priv = to_intel_bo(work->pending_flip_obj);
 252                                 if(obj_priv)
 253                                         seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj_priv->gtt_offset );
 254                         }
 255                 }
 256                 spin_unlock_irqrestore(&dev->event_lock, flags);
 257         }
 258
 259         return 0;
 260 }
 261
 262 static int i915_gem_request_info(struct seq_file *m, void *data)
 263 {
 264         struct drm_info_node *node = (struct drm_info_node *) m->private;
 265         struct drm_device *dev = node->minor->dev;
 266         drm_i915_private_t *dev_priv = dev->dev_private;
 267         struct drm_i915_gem_request *gem_request;
 268         int ret;
 269
 270         ret = mutex_lock_interruptible(&dev->struct_mutex);
 271         if (ret)
 272                 return ret;
 273
 274         seq_printf(m, "Request:\n");
 275         list_for_each_entry(gem_request, &dev_priv->render_ring.request_list,
 276                         list) {
 277                 seq_printf(m, "    %d @ %d\n",
 278                            gem_request->seqno,
 279                            (int) (jiffies - gem_request->emitted_jiffies));
 280         }
 281         mutex_unlock(&dev->struct_mutex);
 282
 283         return 0;
 284 }
 285
 286 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 287 {
 288         struct drm_info_node *node = (struct drm_info_node *) m->private;
 289         struct drm_device *dev = node->minor->dev;
 290         drm_i915_private_t *dev_priv = dev->dev_private;
 291         int ret;
 292
 293         ret = mutex_lock_interruptible(&dev->struct_mutex);
 294         if (ret)
 295                 return ret;
 296
 297         if (dev_priv->render_ring.status_page.page_addr != NULL) {
 298                 seq_printf(m, "Current sequence: %d\n",
 299                            dev_priv->render_ring.get_seqno(dev, &dev_priv->render_ring));
 300         } else {
 301                 seq_printf(m, "Current sequence: hws uninitialized\n");
 302         }
 303         seq_printf(m, "Waiter sequence:  %d\n",
 304                         dev_priv->mm.waiting_gem_seqno);
 305         seq_printf(m, "IRQ sequence:     %d\n", dev_priv->mm.irq_gem_seqno);
 306
 307         mutex_unlock(&dev->struct_mutex);
 308
 309         return 0;
 310 }
 311
 312
 313 static int i915_interrupt_info(struct seq_file *m, void *data)
 314 {
 315         struct drm_info_node *node = (struct drm_info_node *) m->private;
 316         struct drm_device *dev = node->minor->dev;
 317         drm_i915_private_t *dev_priv = dev->dev_private;
 318         int ret;
 319
 320         ret = mutex_lock_interruptible(&dev->struct_mutex);
 321         if (ret)
 322                 return ret;
 323
 324         if (!HAS_PCH_SPLIT(dev)) {
 325                 seq_printf(m, "Interrupt enable:    %08x\n",
 326                            I915_READ(IER));
 327                 seq_printf(m, "Interrupt identity:  %08x\n",
 328                            I915_READ(IIR));
 329                 seq_printf(m, "Interrupt mask:      %08x\n",
 330                            I915_READ(IMR));
 331                 seq_printf(m, "Pipe A stat:         %08x\n",
 332                            I915_READ(PIPEASTAT));
 333                 seq_printf(m, "Pipe B stat:         %08x\n",
 334                            I915_READ(PIPEBSTAT));
 335         } else {
 336                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
 337                            I915_READ(DEIER));
 338                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
 339                            I915_READ(DEIIR));
 340                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
 341                            I915_READ(DEIMR));
 342                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
 343                            I915_READ(SDEIER));
 344                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
 345                            I915_READ(SDEIIR));
 346                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
 347                            I915_READ(SDEIMR));
 348                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
 349                            I915_READ(GTIER));
 350                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
 351                            I915_READ(GTIIR));
 352                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
 353                            I915_READ(GTIMR));
 354         }
 355         seq_printf(m, "Interrupts received: %d\n",
 356                    atomic_read(&dev_priv->irq_received));
 357         if (dev_priv->render_ring.status_page.page_addr != NULL) {
 358                 seq_printf(m, "Current sequence:    %d\n",
 359                            dev_priv->render_ring.get_seqno(dev, &dev_priv->render_ring));
 360         } else {
 361                 seq_printf(m, "Current sequence:    hws uninitialized\n");
 362         }
 363         seq_printf(m, "Waiter sequence:     %d\n",
 364                    dev_priv->mm.waiting_gem_seqno);
 365         seq_printf(m, "IRQ sequence:        %d\n",
 366                    dev_priv->mm.irq_gem_seqno);
 367         mutex_unlock(&dev->struct_mutex);
 368
 369         return 0;
 370 }
 371
 372 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 373 {
 374         struct drm_info_node *node = (struct drm_info_node *) m->private;
 375         struct drm_device *dev = node->minor->dev;
 376         drm_i915_private_t *dev_priv = dev->dev_private;
 377         int i, ret;
 378
 379         ret = mutex_lock_interruptible(&dev->struct_mutex);
 380         if (ret)
 381                 return ret;
 382
 383         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 384         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 385         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 386                 struct drm_gem_object *obj = dev_priv->fence_regs[i].obj;
 387
 388                 if (obj == NULL) {
 389                         seq_printf(m, "Fenced object[%2d] = unused\n", i);
 390                 } else {
 391                         struct drm_i915_gem_object *obj_priv;
 392
 393                         obj_priv = to_intel_bo(obj);
 394                         seq_printf(m, "Fenced object[%2d] = %p: %s "
 395                                    "%08x %08zx %08x %s %08x %08x %d",
 396                                    i, obj, get_pin_flag(obj_priv),
 397                                    obj_priv->gtt_offset,
 398                                    obj->size, obj_priv->stride,
 399                                    get_tiling_flag(obj_priv),
 400                                    obj->read_domains, obj->write_domain,
 401                                    obj_priv->last_rendering_seqno);
 402                         if (obj->name)
 403                                 seq_printf(m, " (name: %d)", obj->name);
 404                         seq_printf(m, "\n");
 405                 }
 406         }
 407         mutex_unlock(&dev->struct_mutex);
 408
 409         return 0;
 410 }
 411
 412 static int i915_hws_info(struct seq_file *m, void *data)
 413 {
 414         struct drm_info_node *node = (struct drm_info_node *) m->private;
 415         struct drm_device *dev = node->minor->dev;
 416         drm_i915_private_t *dev_priv = dev->dev_private;
 417         int i;
 418         volatile u32 *hws;
 419
 420         hws = (volatile u32 *)dev_priv->render_ring.status_page.page_addr;
 421         if (hws == NULL)
 422                 return 0;
 423
 424         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 425                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 426                            i * 4,
 427                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 428         }
 429         return 0;
 430 }
 431
 432 static void i915_dump_object(struct seq_file *m,
 433                              struct io_mapping *mapping,
 434                              struct drm_i915_gem_object *obj_priv)
 435 {
 436         int page, page_count, i;
 437
 438         page_count = obj_priv->base.size / PAGE_SIZE;
 439         for (page = 0; page < page_count; page++) {
 440                 u32 *mem = io_mapping_map_wc(mapping,
 441                                              obj_priv->gtt_offset + page * PAGE_SIZE);
 442                 for (i = 0; i < PAGE_SIZE; i += 4)
 443                         seq_printf(m, "%08x :  %08x\n", i, mem[i / 4]);
 444                 io_mapping_unmap(mem);
 445         }
 446 }
 447
 448 static int i915_batchbuffer_info(struct seq_file *m, void *data)
 449 {
 450         struct drm_info_node *node = (struct drm_info_node *) m->private;
 451         struct drm_device *dev = node->minor->dev;
 452         drm_i915_private_t *dev_priv = dev->dev_private;
 453         struct drm_gem_object *obj;
 454         struct drm_i915_gem_object *obj_priv;
 455         int ret;
 456
 457         ret = mutex_lock_interruptible(&dev->struct_mutex);
 458         if (ret)
 459                 return ret;
 460
 461         list_for_each_entry(obj_priv, &dev_priv->mm.active_list, mm_list) {
 462                 obj = &obj_priv->base;
 463                 if (obj->read_domains & I915_GEM_DOMAIN_COMMAND) {
 464                     seq_printf(m, "--- gtt_offset = 0x%08x\n",
 465                                obj_priv->gtt_offset);
 466                     i915_dump_object(m, dev_priv->mm.gtt_mapping, obj_priv);
 467                 }
 468         }
 469
 470         mutex_unlock(&dev->struct_mutex);
 471
 472         return 0;
 473 }
 474
 475 static int i915_ringbuffer_data(struct seq_file *m, void *data)
 476 {
 477         struct drm_info_node *node = (struct drm_info_node *) m->private;
 478         struct drm_device *dev = node->minor->dev;
 479         drm_i915_private_t *dev_priv = dev->dev_private;
 480         int ret;
 481
 482         ret = mutex_lock_interruptible(&dev->struct_mutex);
 483         if (ret)
 484                 return ret;
 485
 486         if (!dev_priv->render_ring.gem_object) {
 487                 seq_printf(m, "No ringbuffer setup\n");
 488         } else {
 489                 u8 *virt = dev_priv->render_ring.virtual_start;
 490                 uint32_t off;
 491
 492                 for (off = 0; off < dev_priv->render_ring.size; off += 4) {
 493                         uint32_t *ptr = (uint32_t *)(virt + off);
 494                         seq_printf(m, "%08x :  %08x\n", off, *ptr);
 495                 }
 496         }
 497         mutex_unlock(&dev->struct_mutex);
 498
 499         return 0;
 500 }
 501
 502 static int i915_ringbuffer_info(struct seq_file *m, void *data)
 503 {
 504         struct drm_info_node *node = (struct drm_info_node *) m->private;
 505         struct drm_device *dev = node->minor->dev;
 506         drm_i915_private_t *dev_priv = dev->dev_private;
 507         unsigned int head, tail;
 508
 509         head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
 510         tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
 511
 512         seq_printf(m, "RingHead :  %08x\n", head);
 513         seq_printf(m, "RingTail :  %08x\n", tail);
 514         seq_printf(m, "RingSize :  %08lx\n", dev_priv->render_ring.size);
 515         seq_printf(m, "Acthd :     %08x\n", I915_READ(INTEL_INFO(dev)->gen >= 4 ? ACTHD_I965 : ACTHD));
 516
 517         return 0;
 518 }
 519
 520 static const char *pin_flag(int pinned)
 521 {
 522         if (pinned > 0)
 523                 return " P";
 524         else if (pinned < 0)
 525                 return " p";
 526         else
 527                 return "";
 528 }
 529
 530 static const char *tiling_flag(int tiling)
 531 {
 532         switch (tiling) {
 533         default:
 534         case I915_TILING_NONE: return "";
 535         case I915_TILING_X: return " X";
 536         case I915_TILING_Y: return " Y";
 537         }
 538 }
 539
 540 static const char *dirty_flag(int dirty)
 541 {
 542         return dirty ? " dirty" : "";
 543 }
 544
 545 static const char *purgeable_flag(int purgeable)
 546 {
 547         return purgeable ? " purgeable" : "";
 548 }
 549
 550 static int i915_error_state(struct seq_file *m, void *unused)
 551 {
 552         struct drm_info_node *node = (struct drm_info_node *) m->private;
 553         struct drm_device *dev = node->minor->dev;
 554         drm_i915_private_t *dev_priv = dev->dev_private;
 555         struct drm_i915_error_state *error;
 556         unsigned long flags;
 557         int i, page, offset, elt;
 558
 559         spin_lock_irqsave(&dev_priv->error_lock, flags);
 560         if (!dev_priv->first_error) {
 561                 seq_printf(m, "no error state collected\n");
 562                 goto out;
 563         }
 564
 565         error = dev_priv->first_error;
 566
 567         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 568                    error->time.tv_usec);
 569         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
 570         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 571         seq_printf(m, "  PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 572         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm);
 573         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir);
 574         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr);
 575         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone);
 576         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd);
 577         if (INTEL_INFO(dev)->gen >= 4) {
 578                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps);
 579                 seq_printf(m, "  INSTDONE1: 0x%08x\n", error->instdone1);
 580         }
 581         seq_printf(m, "seqno: 0x%08x\n", error->seqno);
 582
 583         if (error->active_bo_count) {
 584                 seq_printf(m, "Buffers [%d]:\n", error->active_bo_count);
 585
 586                 for (i = 0; i < error->active_bo_count; i++) {
 587                         seq_printf(m, "  %08x %8zd %08x %08x %08x%s%s%s%s",
 588                                    error->active_bo[i].gtt_offset,
 589                                    error->active_bo[i].size,
 590                                    error->active_bo[i].read_domains,
 591                                    error->active_bo[i].write_domain,
 592                                    error->active_bo[i].seqno,
 593                                    pin_flag(error->active_bo[i].pinned),
 594                                    tiling_flag(error->active_bo[i].tiling),
 595                                    dirty_flag(error->active_bo[i].dirty),
 596                                    purgeable_flag(error->active_bo[i].purgeable));
 597
 598                         if (error->active_bo[i].name)
 599                                 seq_printf(m, " (name: %d)", error->active_bo[i].name);
 600                         if (error->active_bo[i].fence_reg != I915_FENCE_REG_NONE)
 601                                 seq_printf(m, " (fence: %d)", error->active_bo[i].fence_reg);
 602
 603                         seq_printf(m, "\n");
 604                 }
 605         }
 606
 607         for (i = 0; i < ARRAY_SIZE(error->batchbuffer); i++) {
 608                 if (error->batchbuffer[i]) {
 609                         struct drm_i915_error_object *obj = error->batchbuffer[i];
 610
 611                         seq_printf(m, "--- gtt_offset = 0x%08x\n", obj->gtt_offset);
 612                         offset = 0;
 613                         for (page = 0; page < obj->page_count; page++) {
 614                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 615                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 616                                         offset += 4;
 617                                 }
 618                         }
 619                 }
 620         }
 621
 622         if (error->ringbuffer) {
 623                 struct drm_i915_error_object *obj = error->ringbuffer;
 624
 625                 seq_printf(m, "--- ringbuffer = 0x%08x\n", obj->gtt_offset);
 626                 offset = 0;
 627                 for (page = 0; page < obj->page_count; page++) {
 628                         for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 629                                 seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 630                                 offset += 4;
 631                         }
 632                 }
 633         }
 634
 635         if (error->overlay)
 636                 intel_overlay_print_error_state(m, error->overlay);
 637
 638 out:
 639         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
 640
 641         return 0;
 642 }
 643
 644 static int i915_rstdby_delays(struct seq_file *m, void *unused)
 645 {
 646         struct drm_info_node *node = (struct drm_info_node *) m->private;
 647         struct drm_device *dev = node->minor->dev;
 648         drm_i915_private_t *dev_priv = dev->dev_private;
 649         u16 crstanddelay = I915_READ16(CRSTANDVID);
 650
 651         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
 652
 653         return 0;
 654 }
 655
 656 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
 657 {
 658         struct drm_info_node *node = (struct drm_info_node *) m->private;
 659         struct drm_device *dev = node->minor->dev;
 660         drm_i915_private_t *dev_priv = dev->dev_private;
 661         u16 rgvswctl = I915_READ16(MEMSWCTL);
 662         u16 rgvstat = I915_READ16(MEMSTAT_ILK);
 663
 664         seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 665         seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
 666         seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 667                    MEMSTAT_VID_SHIFT);
 668         seq_printf(m, "Current P-state: %d\n",
 669                    (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
 670
 671         return 0;
 672 }
 673
 674 static int i915_delayfreq_table(struct seq_file *m, void *unused)
 675 {
 676         struct drm_info_node *node = (struct drm_info_node *) m->private;
 677         struct drm_device *dev = node->minor->dev;
 678         drm_i915_private_t *dev_priv = dev->dev_private;
 679         u32 delayfreq;
 680         int i;
 681
 682         for (i = 0; i < 16; i++) {
 683                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
 684                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
 685                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
 686         }
 687
 688         return 0;
 689 }
 690
 691 static inline int MAP_TO_MV(int map)
 692 {
 693         return 1250 - (map * 25);
 694 }
 695
 696 static int i915_inttoext_table(struct seq_file *m, void *unused)
 697 {
 698         struct drm_info_node *node = (struct drm_info_node *) m->private;
 699         struct drm_device *dev = node->minor->dev;
 700         drm_i915_private_t *dev_priv = dev->dev_private;
 701         u32 inttoext;
 702         int i;
 703
 704         for (i = 1; i <= 32; i++) {
 705                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
 706                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
 707         }
 708
 709         return 0;
 710 }
 711
 712 static int i915_drpc_info(struct seq_file *m, void *unused)
 713 {
 714         struct drm_info_node *node = (struct drm_info_node *) m->private;
 715         struct drm_device *dev = node->minor->dev;
 716         drm_i915_private_t *dev_priv = dev->dev_private;
 717         u32 rgvmodectl = I915_READ(MEMMODECTL);
 718         u32 rstdbyctl = I915_READ(MCHBAR_RENDER_STANDBY);
 719         u16 crstandvid = I915_READ16(CRSTANDVID);
 720
 721         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
 722                    "yes" : "no");
 723         seq_printf(m, "Boost freq: %d\n",
 724                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
 725                    MEMMODE_BOOST_FREQ_SHIFT);
 726         seq_printf(m, "HW control enabled: %s\n",
 727                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
 728         seq_printf(m, "SW control enabled: %s\n",
 729                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
 730         seq_printf(m, "Gated voltage change: %s\n",
 731                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
 732         seq_printf(m, "Starting frequency: P%d\n",
 733                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
 734         seq_printf(m, "Max P-state: P%d\n",
 735                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
 736         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
 737         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
 738         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
 739         seq_printf(m, "Render standby enabled: %s\n",
 740                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
 741
 742         return 0;
 743 }
 744
 745 static int i915_fbc_status(struct seq_file *m, void *unused)
 746 {
 747         struct drm_info_node *node = (struct drm_info_node *) m->private;
 748         struct drm_device *dev = node->minor->dev;
 749         drm_i915_private_t *dev_priv = dev->dev_private;
 750
 751         if (!I915_HAS_FBC(dev)) {
 752                 seq_printf(m, "FBC unsupported on this chipset\n");
 753                 return 0;
 754         }
 755
 756         if (intel_fbc_enabled(dev)) {
 757                 seq_printf(m, "FBC enabled\n");
 758         } else {
 759                 seq_printf(m, "FBC disabled: ");
 760                 switch (dev_priv->no_fbc_reason) {
 761                 case FBC_NO_OUTPUT:
 762                         seq_printf(m, "no outputs");
 763                         break;
 764                 case FBC_STOLEN_TOO_SMALL:
 765                         seq_printf(m, "not enough stolen memory");
 766                         break;
 767                 case FBC_UNSUPPORTED_MODE:
 768                         seq_printf(m, "mode not supported");
 769                         break;
 770                 case FBC_MODE_TOO_LARGE:
 771                         seq_printf(m, "mode too large");
 772                         break;
 773                 case FBC_BAD_PLANE:
 774                         seq_printf(m, "FBC unsupported on plane");
 775                         break;
 776                 case FBC_NOT_TILED:
 777                         seq_printf(m, "scanout buffer not tiled");
 778                         break;
 779                 case FBC_MULTIPLE_PIPES:
 780                         seq_printf(m, "multiple pipes are enabled");
 781                         break;
 782                 default:
 783                         seq_printf(m, "unknown reason");
 784                 }
 785                 seq_printf(m, "\n");
 786         }
 787         return 0;
 788 }
 789
 790 static int i915_sr_status(struct seq_file *m, void *unused)
 791 {
 792         struct drm_info_node *node = (struct drm_info_node *) m->private;
 793         struct drm_device *dev = node->minor->dev;
 794         drm_i915_private_t *dev_priv = dev->dev_private;
 795         bool sr_enabled = false;
 796
 797         if (IS_GEN5(dev))
 798                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
 799         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
 800                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
 801         else if (IS_I915GM(dev))
 802                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
 803         else if (IS_PINEVIEW(dev))
 804                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
 805
 806         seq_printf(m, "self-refresh: %s\n",
 807                    sr_enabled ? "enabled" : "disabled");
 808
 809         return 0;
 810 }
 811
 812 static int i915_emon_status(struct seq_file *m, void *unused)
 813 {
 814         struct drm_info_node *node = (struct drm_info_node *) m->private;
 815         struct drm_device *dev = node->minor->dev;
 816         drm_i915_private_t *dev_priv = dev->dev_private;
 817         unsigned long temp, chipset, gfx;
 818         int ret;
 819
 820         ret = mutex_lock_interruptible(&dev->struct_mutex);
 821         if (ret)
 822                 return ret;
 823
 824         temp = i915_mch_val(dev_priv);
 825         chipset = i915_chipset_val(dev_priv);
 826         gfx = i915_gfx_val(dev_priv);
 827         mutex_unlock(&dev->struct_mutex);
 828
 829         seq_printf(m, "GMCH temp: %ld\n", temp);
 830         seq_printf(m, "Chipset power: %ld\n", chipset);
 831         seq_printf(m, "GFX power: %ld\n", gfx);
 832         seq_printf(m, "Total power: %ld\n", chipset + gfx);
 833
 834         return 0;
 835 }
 836
 837 static int i915_gfxec(struct seq_file *m, void *unused)
 838 {
 839         struct drm_info_node *node = (struct drm_info_node *) m->private;
 840         struct drm_device *dev = node->minor->dev;
 841         drm_i915_private_t *dev_priv = dev->dev_private;
 842
 843         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
 844
 845         return 0;
 846 }
 847
 848 static int i915_opregion(struct seq_file *m, void *unused)
 849 {
 850         struct drm_info_node *node = (struct drm_info_node *) m->private;
 851         struct drm_device *dev = node->minor->dev;
 852         drm_i915_private_t *dev_priv = dev->dev_private;
 853         struct intel_opregion *opregion = &dev_priv->opregion;
 854         int ret;
 855
 856         ret = mutex_lock_interruptible(&dev->struct_mutex);
 857         if (ret)
 858                 return ret;
 859
 860         if (opregion->header)
 861                 seq_write(m, opregion->header, OPREGION_SIZE);
 862
 863         mutex_unlock(&dev->struct_mutex);
 864
 865         return 0;
 866 }
 867
 868 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
 869 {
 870         struct drm_info_node *node = (struct drm_info_node *) m->private;
 871         struct drm_device *dev = node->minor->dev;
 872         drm_i915_private_t *dev_priv = dev->dev_private;
 873         struct intel_fbdev *ifbdev;
 874         struct intel_framebuffer *fb;
 875         int ret;
 876
 877         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
 878         if (ret)
 879                 return ret;
 880
 881         ifbdev = dev_priv->fbdev;
 882         fb = to_intel_framebuffer(ifbdev->helper.fb);
 883
 884         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
 885                    fb->base.width,
 886                    fb->base.height,
 887                    fb->base.depth,
 888                    fb->base.bits_per_pixel);
 889         describe_obj(m, to_intel_bo(fb->obj));
 890         seq_printf(m, "\n");
 891
 892         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
 893                 if (&fb->base == ifbdev->helper.fb)
 894                         continue;
 895
 896                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
 897                            fb->base.width,
 898                            fb->base.height,
 899                            fb->base.depth,
 900                            fb->base.bits_per_pixel);
 901                 describe_obj(m, to_intel_bo(fb->obj));
 902                 seq_printf(m, "\n");
 903         }
 904
 905         mutex_unlock(&dev->mode_config.mutex);
 906
 907         return 0;
 908 }
 909
 910 static int
 911 i915_wedged_open(struct inode *inode,
 912                  struct file *filp)
 913 {
 914         filp->private_data = inode->i_private;
 915         return 0;
 916 }
 917
 918 static ssize_t
 919 i915_wedged_read(struct file *filp,
 920                  char __user *ubuf,
 921                  size_t max,
 922                  loff_t *ppos)
 923 {
 924         struct drm_device *dev = filp->private_data;
 925         drm_i915_private_t *dev_priv = dev->dev_private;
 926         char buf[80];
 927         int len;
 928
 929         len = snprintf(buf, sizeof (buf),
 930                        "wedged :  %d\n",
 931                        atomic_read(&dev_priv->mm.wedged));
 932
 933         if (len > sizeof (buf))
 934                 len = sizeof (buf);
 935
 936         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
 937 }
 938
 939 static ssize_t
 940 i915_wedged_write(struct file *filp,
 941                   const char __user *ubuf,
 942                   size_t cnt,
 943                   loff_t *ppos)
 944 {
 945         struct drm_device *dev = filp->private_data;
 946         drm_i915_private_t *dev_priv = dev->dev_private;
 947         char buf[20];
 948         int val = 1;
 949
 950         if (cnt > 0) {
 951                 if (cnt > sizeof (buf) - 1)
 952                         return -EINVAL;
 953
 954                 if (copy_from_user(buf, ubuf, cnt))
 955                         return -EFAULT;
 956                 buf[cnt] = 0;
 957
 958                 val = simple_strtoul(buf, NULL, 0);
 959         }
 960
 961         DRM_INFO("Manually setting wedged to %d\n", val);
 962
 963         atomic_set(&dev_priv->mm.wedged, val);
 964         if (val) {
 965                 wake_up_all(&dev_priv->irq_queue);
 966                 queue_work(dev_priv->wq, &dev_priv->error_work);
 967         }
 968
 969         return cnt;
 970 }
 971
 972 static const struct file_operations i915_wedged_fops = {
 973         .owner = THIS_MODULE,
 974         .open = i915_wedged_open,
 975         .read = i915_wedged_read,
 976         .write = i915_wedged_write,
 977         .llseek = default_llseek,
 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 */