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_pageflip_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         unsigned long flags;
 196         struct intel_crtc *crtc;
 197
 198         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
 199                 const char *pipe = crtc->pipe ? "B" : "A";
 200                 const char *plane = crtc->plane ? "B" : "A";
 201                 struct intel_unpin_work *work;
 202
 203                 spin_lock_irqsave(&dev->event_lock, flags);
 204                 work = crtc->unpin_work;
 205                 if (work == NULL) {
 206                         seq_printf(m, "No flip due on pipe %s (plane %s)\n",
 207                                    pipe, plane);
 208                 } else {
 209                         if (!work->pending) {
 210                                 seq_printf(m, "Flip queued on pipe %s (plane %s)\n",
 211                                            pipe, plane);
 212                         } else {
 213                                 seq_printf(m, "Flip pending (waiting for vsync) on pipe %s (plane %s)\n",
 214                                            pipe, plane);
 215                         }
 216                         if (work->enable_stall_check)
 217                                 seq_printf(m, "Stall check enabled, ");
 218                         else
 219                                 seq_printf(m, "Stall check waiting for page flip ioctl, ");
 220                         seq_printf(m, "%d prepares\n", work->pending);
 221
 222                         if (work->old_fb_obj) {
 223                                 struct drm_i915_gem_object *obj_priv = to_intel_bo(work->old_fb_obj);
 224                                 if(obj_priv)
 225                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj_priv->gtt_offset );
 226                         }
 227                         if (work->pending_flip_obj) {
 228                                 struct drm_i915_gem_object *obj_priv = to_intel_bo(work->pending_flip_obj);
 229                                 if(obj_priv)
 230                                         seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj_priv->gtt_offset );
 231                         }
 232                 }
 233                 spin_unlock_irqrestore(&dev->event_lock, flags);
 234         }
 235
 236         return 0;
 237 }
 238
 239 static int i915_gem_request_info(struct seq_file *m, void *data)
 240 {
 241         struct drm_info_node *node = (struct drm_info_node *) m->private;
 242         struct drm_device *dev = node->minor->dev;
 243         drm_i915_private_t *dev_priv = dev->dev_private;
 244         struct drm_i915_gem_request *gem_request;
 245         int ret;
 246
 247         ret = mutex_lock_interruptible(&dev->struct_mutex);
 248         if (ret)
 249                 return ret;
 250
 251         seq_printf(m, "Request:\n");
 252         list_for_each_entry(gem_request, &dev_priv->render_ring.request_list,
 253                         list) {
 254                 seq_printf(m, "    %d @ %d\n",
 255                            gem_request->seqno,
 256                            (int) (jiffies - gem_request->emitted_jiffies));
 257         }
 258         mutex_unlock(&dev->struct_mutex);
 259
 260         return 0;
 261 }
 262
 263 static int i915_gem_seqno_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         int ret;
 269
 270         ret = mutex_lock_interruptible(&dev->struct_mutex);
 271         if (ret)
 272                 return ret;
 273
 274         if (dev_priv->render_ring.status_page.page_addr != NULL) {
 275                 seq_printf(m, "Current sequence: %d\n",
 276                            dev_priv->render_ring.get_seqno(dev, &dev_priv->render_ring));
 277         } else {
 278                 seq_printf(m, "Current sequence: hws uninitialized\n");
 279         }
 280         seq_printf(m, "Waiter sequence:  %d\n",
 281                         dev_priv->mm.waiting_gem_seqno);
 282         seq_printf(m, "IRQ sequence:     %d\n", dev_priv->mm.irq_gem_seqno);
 283
 284         mutex_unlock(&dev->struct_mutex);
 285
 286         return 0;
 287 }
 288
 289
 290 static int i915_interrupt_info(struct seq_file *m, void *data)
 291 {
 292         struct drm_info_node *node = (struct drm_info_node *) m->private;
 293         struct drm_device *dev = node->minor->dev;
 294         drm_i915_private_t *dev_priv = dev->dev_private;
 295         int ret;
 296
 297         ret = mutex_lock_interruptible(&dev->struct_mutex);
 298         if (ret)
 299                 return ret;
 300
 301         if (!HAS_PCH_SPLIT(dev)) {
 302                 seq_printf(m, "Interrupt enable:    %08x\n",
 303                            I915_READ(IER));
 304                 seq_printf(m, "Interrupt identity:  %08x\n",
 305                            I915_READ(IIR));
 306                 seq_printf(m, "Interrupt mask:      %08x\n",
 307                            I915_READ(IMR));
 308                 seq_printf(m, "Pipe A stat:         %08x\n",
 309                            I915_READ(PIPEASTAT));
 310                 seq_printf(m, "Pipe B stat:         %08x\n",
 311                            I915_READ(PIPEBSTAT));
 312         } else {
 313                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
 314                            I915_READ(DEIER));
 315                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
 316                            I915_READ(DEIIR));
 317                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
 318                            I915_READ(DEIMR));
 319                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
 320                            I915_READ(SDEIER));
 321                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
 322                            I915_READ(SDEIIR));
 323                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
 324                            I915_READ(SDEIMR));
 325                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
 326                            I915_READ(GTIER));
 327                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
 328                            I915_READ(GTIIR));
 329                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
 330                            I915_READ(GTIMR));
 331         }
 332         seq_printf(m, "Interrupts received: %d\n",
 333                    atomic_read(&dev_priv->irq_received));
 334         if (dev_priv->render_ring.status_page.page_addr != NULL) {
 335                 seq_printf(m, "Current sequence:    %d\n",
 336                            dev_priv->render_ring.get_seqno(dev, &dev_priv->render_ring));
 337         } else {
 338                 seq_printf(m, "Current sequence:    hws uninitialized\n");
 339         }
 340         seq_printf(m, "Waiter sequence:     %d\n",
 341                    dev_priv->mm.waiting_gem_seqno);
 342         seq_printf(m, "IRQ sequence:        %d\n",
 343                    dev_priv->mm.irq_gem_seqno);
 344         mutex_unlock(&dev->struct_mutex);
 345
 346         return 0;
 347 }
 348
 349 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 350 {
 351         struct drm_info_node *node = (struct drm_info_node *) m->private;
 352         struct drm_device *dev = node->minor->dev;
 353         drm_i915_private_t *dev_priv = dev->dev_private;
 354         int i, ret;
 355
 356         ret = mutex_lock_interruptible(&dev->struct_mutex);
 357         if (ret)
 358                 return ret;
 359
 360         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 361         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 362         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 363                 struct drm_gem_object *obj = dev_priv->fence_regs[i].obj;
 364
 365                 if (obj == NULL) {
 366                         seq_printf(m, "Fenced object[%2d] = unused\n", i);
 367                 } else {
 368                         struct drm_i915_gem_object *obj_priv;
 369
 370                         obj_priv = to_intel_bo(obj);
 371                         seq_printf(m, "Fenced object[%2d] = %p: %s "
 372                                    "%08x %08zx %08x %s %08x %08x %d",
 373                                    i, obj, get_pin_flag(obj_priv),
 374                                    obj_priv->gtt_offset,
 375                                    obj->size, obj_priv->stride,
 376                                    get_tiling_flag(obj_priv),
 377                                    obj->read_domains, obj->write_domain,
 378                                    obj_priv->last_rendering_seqno);
 379                         if (obj->name)
 380                                 seq_printf(m, " (name: %d)", obj->name);
 381                         seq_printf(m, "\n");
 382                 }
 383         }
 384         mutex_unlock(&dev->struct_mutex);
 385
 386         return 0;
 387 }
 388
 389 static int i915_hws_info(struct seq_file *m, void *data)
 390 {
 391         struct drm_info_node *node = (struct drm_info_node *) m->private;
 392         struct drm_device *dev = node->minor->dev;
 393         drm_i915_private_t *dev_priv = dev->dev_private;
 394         int i;
 395         volatile u32 *hws;
 396
 397         hws = (volatile u32 *)dev_priv->render_ring.status_page.page_addr;
 398         if (hws == NULL)
 399                 return 0;
 400
 401         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 402                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 403                            i * 4,
 404                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 405         }
 406         return 0;
 407 }
 408
 409 static void i915_dump_pages(struct seq_file *m, struct page **pages, int page_count)
 410 {
 411         int page, i;
 412         uint32_t *mem;
 413
 414         for (page = 0; page < page_count; page++) {
 415                 mem = kmap(pages[page]);
 416                 for (i = 0; i < PAGE_SIZE; i += 4)
 417                         seq_printf(m, "%08x :  %08x\n", i, mem[i / 4]);
 418                 kunmap(pages[page]);
 419         }
 420 }
 421
 422 static int i915_batchbuffer_info(struct seq_file *m, void *data)
 423 {
 424         struct drm_info_node *node = (struct drm_info_node *) m->private;
 425         struct drm_device *dev = node->minor->dev;
 426         drm_i915_private_t *dev_priv = dev->dev_private;
 427         struct drm_gem_object *obj;
 428         struct drm_i915_gem_object *obj_priv;
 429         int ret;
 430
 431         ret = mutex_lock_interruptible(&dev->struct_mutex);
 432         if (ret)
 433                 return ret;
 434
 435         list_for_each_entry(obj_priv, &dev_priv->render_ring.active_list,
 436                         list) {
 437                 obj = &obj_priv->base;
 438                 if (obj->read_domains & I915_GEM_DOMAIN_COMMAND) {
 439                     ret = i915_gem_object_get_pages(obj, 0);
 440                     if (ret) {
 441                             mutex_unlock(&dev->struct_mutex);
 442                             return ret;
 443                     }
 444
 445                     seq_printf(m, "--- gtt_offset = 0x%08x\n", obj_priv->gtt_offset);
 446                     i915_dump_pages(m, obj_priv->pages, obj->size / PAGE_SIZE);
 447
 448                     i915_gem_object_put_pages(obj);
 449                 }
 450         }
 451
 452         mutex_unlock(&dev->struct_mutex);
 453
 454         return 0;
 455 }
 456
 457 static int i915_ringbuffer_data(struct seq_file *m, void *data)
 458 {
 459         struct drm_info_node *node = (struct drm_info_node *) m->private;
 460         struct drm_device *dev = node->minor->dev;
 461         drm_i915_private_t *dev_priv = dev->dev_private;
 462         int ret;
 463
 464         ret = mutex_lock_interruptible(&dev->struct_mutex);
 465         if (ret)
 466                 return ret;
 467
 468         if (!dev_priv->render_ring.gem_object) {
 469                 seq_printf(m, "No ringbuffer setup\n");
 470         } else {
 471                 u8 *virt = dev_priv->render_ring.virtual_start;
 472                 uint32_t off;
 473
 474                 for (off = 0; off < dev_priv->render_ring.size; off += 4) {
 475                         uint32_t *ptr = (uint32_t *)(virt + off);
 476                         seq_printf(m, "%08x :  %08x\n", off, *ptr);
 477                 }
 478         }
 479         mutex_unlock(&dev->struct_mutex);
 480
 481         return 0;
 482 }
 483
 484 static int i915_ringbuffer_info(struct seq_file *m, void *data)
 485 {
 486         struct drm_info_node *node = (struct drm_info_node *) m->private;
 487         struct drm_device *dev = node->minor->dev;
 488         drm_i915_private_t *dev_priv = dev->dev_private;
 489         unsigned int head, tail;
 490
 491         head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
 492         tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
 493
 494         seq_printf(m, "RingHead :  %08x\n", head);
 495         seq_printf(m, "RingTail :  %08x\n", tail);
 496         seq_printf(m, "RingSize :  %08lx\n", dev_priv->render_ring.size);
 497         seq_printf(m, "Acthd :     %08x\n", I915_READ(INTEL_INFO(dev)->gen >= 4 ? ACTHD_I965 : ACTHD));
 498
 499         return 0;
 500 }
 501
 502 static const char *pin_flag(int pinned)
 503 {
 504         if (pinned > 0)
 505                 return " P";
 506         else if (pinned < 0)
 507                 return " p";
 508         else
 509                 return "";
 510 }
 511
 512 static const char *tiling_flag(int tiling)
 513 {
 514         switch (tiling) {
 515         default:
 516         case I915_TILING_NONE: return "";
 517         case I915_TILING_X: return " X";
 518         case I915_TILING_Y: return " Y";
 519         }
 520 }
 521
 522 static const char *dirty_flag(int dirty)
 523 {
 524         return dirty ? " dirty" : "";
 525 }
 526
 527 static const char *purgeable_flag(int purgeable)
 528 {
 529         return purgeable ? " purgeable" : "";
 530 }
 531
 532 static int i915_error_state(struct seq_file *m, void *unused)
 533 {
 534         struct drm_info_node *node = (struct drm_info_node *) m->private;
 535         struct drm_device *dev = node->minor->dev;
 536         drm_i915_private_t *dev_priv = dev->dev_private;
 537         struct drm_i915_error_state *error;
 538         unsigned long flags;
 539         int i, page, offset, elt;
 540
 541         spin_lock_irqsave(&dev_priv->error_lock, flags);
 542         if (!dev_priv->first_error) {
 543                 seq_printf(m, "no error state collected\n");
 544                 goto out;
 545         }
 546
 547         error = dev_priv->first_error;
 548
 549         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 550                    error->time.tv_usec);
 551         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
 552         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 553         seq_printf(m, "  PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 554         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm);
 555         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir);
 556         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr);
 557         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone);
 558         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd);
 559         if (INTEL_INFO(dev)->gen >= 4) {
 560                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps);
 561                 seq_printf(m, "  INSTDONE1: 0x%08x\n", error->instdone1);
 562         }
 563         seq_printf(m, "seqno: 0x%08x\n", error->seqno);
 564
 565         if (error->active_bo_count) {
 566                 seq_printf(m, "Buffers [%d]:\n", error->active_bo_count);
 567
 568                 for (i = 0; i < error->active_bo_count; i++) {
 569                         seq_printf(m, "  %08x %8zd %08x %08x %08x%s%s%s%s",
 570                                    error->active_bo[i].gtt_offset,
 571                                    error->active_bo[i].size,
 572                                    error->active_bo[i].read_domains,
 573                                    error->active_bo[i].write_domain,
 574                                    error->active_bo[i].seqno,
 575                                    pin_flag(error->active_bo[i].pinned),
 576                                    tiling_flag(error->active_bo[i].tiling),
 577                                    dirty_flag(error->active_bo[i].dirty),
 578                                    purgeable_flag(error->active_bo[i].purgeable));
 579
 580                         if (error->active_bo[i].name)
 581                                 seq_printf(m, " (name: %d)", error->active_bo[i].name);
 582                         if (error->active_bo[i].fence_reg != I915_FENCE_REG_NONE)
 583                                 seq_printf(m, " (fence: %d)", error->active_bo[i].fence_reg);
 584
 585                         seq_printf(m, "\n");
 586                 }
 587         }
 588
 589         for (i = 0; i < ARRAY_SIZE(error->batchbuffer); i++) {
 590                 if (error->batchbuffer[i]) {
 591                         struct drm_i915_error_object *obj = error->batchbuffer[i];
 592
 593                         seq_printf(m, "--- gtt_offset = 0x%08x\n", obj->gtt_offset);
 594                         offset = 0;
 595                         for (page = 0; page < obj->page_count; page++) {
 596                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 597                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 598                                         offset += 4;
 599                                 }
 600                         }
 601                 }
 602         }
 603
 604         if (error->ringbuffer) {
 605                 struct drm_i915_error_object *obj = error->ringbuffer;
 606
 607                 seq_printf(m, "--- ringbuffer = 0x%08x\n", obj->gtt_offset);
 608                 offset = 0;
 609                 for (page = 0; page < obj->page_count; page++) {
 610                         for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 611                                 seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 612                                 offset += 4;
 613                         }
 614                 }
 615         }
 616
 617         if (error->overlay)
 618                 intel_overlay_print_error_state(m, error->overlay);
 619
 620 out:
 621         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
 622
 623         return 0;
 624 }
 625
 626 static int i915_rstdby_delays(struct seq_file *m, void *unused)
 627 {
 628         struct drm_info_node *node = (struct drm_info_node *) m->private;
 629         struct drm_device *dev = node->minor->dev;
 630         drm_i915_private_t *dev_priv = dev->dev_private;
 631         u16 crstanddelay = I915_READ16(CRSTANDVID);
 632
 633         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
 634
 635         return 0;
 636 }
 637
 638 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
 639 {
 640         struct drm_info_node *node = (struct drm_info_node *) m->private;
 641         struct drm_device *dev = node->minor->dev;
 642         drm_i915_private_t *dev_priv = dev->dev_private;
 643         u16 rgvswctl = I915_READ16(MEMSWCTL);
 644         u16 rgvstat = I915_READ16(MEMSTAT_ILK);
 645
 646         seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 647         seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
 648         seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 649                    MEMSTAT_VID_SHIFT);
 650         seq_printf(m, "Current P-state: %d\n",
 651                    (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
 652
 653         return 0;
 654 }
 655
 656 static int i915_delayfreq_table(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         u32 delayfreq;
 662         int i;
 663
 664         for (i = 0; i < 16; i++) {
 665                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
 666                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
 667                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
 668         }
 669
 670         return 0;
 671 }
 672
 673 static inline int MAP_TO_MV(int map)
 674 {
 675         return 1250 - (map * 25);
 676 }
 677
 678 static int i915_inttoext_table(struct seq_file *m, void *unused)
 679 {
 680         struct drm_info_node *node = (struct drm_info_node *) m->private;
 681         struct drm_device *dev = node->minor->dev;
 682         drm_i915_private_t *dev_priv = dev->dev_private;
 683         u32 inttoext;
 684         int i;
 685
 686         for (i = 1; i <= 32; i++) {
 687                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
 688                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
 689         }
 690
 691         return 0;
 692 }
 693
 694 static int i915_drpc_info(struct seq_file *m, void *unused)
 695 {
 696         struct drm_info_node *node = (struct drm_info_node *) m->private;
 697         struct drm_device *dev = node->minor->dev;
 698         drm_i915_private_t *dev_priv = dev->dev_private;
 699         u32 rgvmodectl = I915_READ(MEMMODECTL);
 700         u32 rstdbyctl = I915_READ(MCHBAR_RENDER_STANDBY);
 701         u16 crstandvid = I915_READ16(CRSTANDVID);
 702
 703         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
 704                    "yes" : "no");
 705         seq_printf(m, "Boost freq: %d\n",
 706                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
 707                    MEMMODE_BOOST_FREQ_SHIFT);
 708         seq_printf(m, "HW control enabled: %s\n",
 709                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
 710         seq_printf(m, "SW control enabled: %s\n",
 711                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
 712         seq_printf(m, "Gated voltage change: %s\n",
 713                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
 714         seq_printf(m, "Starting frequency: P%d\n",
 715                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
 716         seq_printf(m, "Max P-state: P%d\n",
 717                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
 718         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
 719         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
 720         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
 721         seq_printf(m, "Render standby enabled: %s\n",
 722                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
 723
 724         return 0;
 725 }
 726
 727 static int i915_fbc_status(struct seq_file *m, void *unused)
 728 {
 729         struct drm_info_node *node = (struct drm_info_node *) m->private;
 730         struct drm_device *dev = node->minor->dev;
 731         drm_i915_private_t *dev_priv = dev->dev_private;
 732
 733         if (!I915_HAS_FBC(dev)) {
 734                 seq_printf(m, "FBC unsupported on this chipset\n");
 735                 return 0;
 736         }
 737
 738         if (intel_fbc_enabled(dev)) {
 739                 seq_printf(m, "FBC enabled\n");
 740         } else {
 741                 seq_printf(m, "FBC disabled: ");
 742                 switch (dev_priv->no_fbc_reason) {
 743                 case FBC_NO_OUTPUT:
 744                         seq_printf(m, "no outputs");
 745                         break;
 746                 case FBC_STOLEN_TOO_SMALL:
 747                         seq_printf(m, "not enough stolen memory");
 748                         break;
 749                 case FBC_UNSUPPORTED_MODE:
 750                         seq_printf(m, "mode not supported");
 751                         break;
 752                 case FBC_MODE_TOO_LARGE:
 753                         seq_printf(m, "mode too large");
 754                         break;
 755                 case FBC_BAD_PLANE:
 756                         seq_printf(m, "FBC unsupported on plane");
 757                         break;
 758                 case FBC_NOT_TILED:
 759                         seq_printf(m, "scanout buffer not tiled");
 760                         break;
 761                 case FBC_MULTIPLE_PIPES:
 762                         seq_printf(m, "multiple pipes are enabled");
 763                         break;
 764                 default:
 765                         seq_printf(m, "unknown reason");
 766                 }
 767                 seq_printf(m, "\n");
 768         }
 769         return 0;
 770 }
 771
 772 static int i915_sr_status(struct seq_file *m, void *unused)
 773 {
 774         struct drm_info_node *node = (struct drm_info_node *) m->private;
 775         struct drm_device *dev = node->minor->dev;
 776         drm_i915_private_t *dev_priv = dev->dev_private;
 777         bool sr_enabled = false;
 778
 779         if (IS_IRONLAKE(dev))
 780                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
 781         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
 782                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
 783         else if (IS_I915GM(dev))
 784                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
 785         else if (IS_PINEVIEW(dev))
 786                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
 787
 788         seq_printf(m, "self-refresh: %s\n",
 789                    sr_enabled ? "enabled" : "disabled");
 790
 791         return 0;
 792 }
 793
 794 static int i915_emon_status(struct seq_file *m, void *unused)
 795 {
 796         struct drm_info_node *node = (struct drm_info_node *) m->private;
 797         struct drm_device *dev = node->minor->dev;
 798         drm_i915_private_t *dev_priv = dev->dev_private;
 799         unsigned long temp, chipset, gfx;
 800         int ret;
 801
 802         ret = mutex_lock_interruptible(&dev->struct_mutex);
 803         if (ret)
 804                 return ret;
 805
 806         temp = i915_mch_val(dev_priv);
 807         chipset = i915_chipset_val(dev_priv);
 808         gfx = i915_gfx_val(dev_priv);
 809         mutex_unlock(&dev->struct_mutex);
 810
 811         seq_printf(m, "GMCH temp: %ld\n", temp);
 812         seq_printf(m, "Chipset power: %ld\n", chipset);
 813         seq_printf(m, "GFX power: %ld\n", gfx);
 814         seq_printf(m, "Total power: %ld\n", chipset + gfx);
 815
 816         return 0;
 817 }
 818
 819 static int i915_gfxec(struct seq_file *m, void *unused)
 820 {
 821         struct drm_info_node *node = (struct drm_info_node *) m->private;
 822         struct drm_device *dev = node->minor->dev;
 823         drm_i915_private_t *dev_priv = dev->dev_private;
 824
 825         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
 826
 827         return 0;
 828 }
 829
 830 static int i915_opregion(struct seq_file *m, void *unused)
 831 {
 832         struct drm_info_node *node = (struct drm_info_node *) m->private;
 833         struct drm_device *dev = node->minor->dev;
 834         drm_i915_private_t *dev_priv = dev->dev_private;
 835         struct intel_opregion *opregion = &dev_priv->opregion;
 836         int ret;
 837
 838         ret = mutex_lock_interruptible(&dev->struct_mutex);
 839         if (ret)
 840                 return ret;
 841
 842         if (opregion->header)
 843                 seq_write(m, opregion->header, OPREGION_SIZE);
 844
 845         mutex_unlock(&dev->struct_mutex);
 846
 847         return 0;
 848 }
 849
 850 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
 851 {
 852         struct drm_info_node *node = (struct drm_info_node *) m->private;
 853         struct drm_device *dev = node->minor->dev;
 854         drm_i915_private_t *dev_priv = dev->dev_private;
 855         struct intel_fbdev *ifbdev;
 856         struct intel_framebuffer *fb;
 857         int ret;
 858
 859         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
 860         if (ret)
 861                 return ret;
 862
 863         ifbdev = dev_priv->fbdev;
 864         fb = to_intel_framebuffer(ifbdev->helper.fb);
 865
 866         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
 867                    fb->base.width,
 868                    fb->base.height,
 869                    fb->base.depth,
 870                    fb->base.bits_per_pixel);
 871         describe_obj(m, to_intel_bo(fb->obj));
 872         seq_printf(m, "\n");
 873
 874         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
 875                 if (&fb->base == ifbdev->helper.fb)
 876                         continue;
 877
 878                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
 879                            fb->base.width,
 880                            fb->base.height,
 881                            fb->base.depth,
 882                            fb->base.bits_per_pixel);
 883                 describe_obj(m, to_intel_bo(fb->obj));
 884                 seq_printf(m, "\n");
 885         }
 886
 887         mutex_unlock(&dev->mode_config.mutex);
 888
 889         return 0;
 890 }
 891
 892 static int
 893 i915_wedged_open(struct inode *inode,
 894                  struct file *filp)
 895 {
 896         filp->private_data = inode->i_private;
 897         return 0;
 898 }
 899
 900 static ssize_t
 901 i915_wedged_read(struct file *filp,
 902                  char __user *ubuf,
 903                  size_t max,
 904                  loff_t *ppos)
 905 {
 906         struct drm_device *dev = filp->private_data;
 907         drm_i915_private_t *dev_priv = dev->dev_private;
 908         char buf[80];
 909         int len;
 910
 911         len = snprintf(buf, sizeof (buf),
 912                        "wedged :  %d\n",
 913                        atomic_read(&dev_priv->mm.wedged));
 914
 915         if (len > sizeof (buf))
 916                 len = sizeof (buf);
 917
 918         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
 919 }
 920
 921 static ssize_t
 922 i915_wedged_write(struct file *filp,
 923                   const char __user *ubuf,
 924                   size_t cnt,
 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[20];
 930         int val = 1;
 931
 932         if (cnt > 0) {
 933                 if (cnt > sizeof (buf) - 1)
 934                         return -EINVAL;
 935
 936                 if (copy_from_user(buf, ubuf, cnt))
 937                         return -EFAULT;
 938                 buf[cnt] = 0;
 939
 940                 val = simple_strtoul(buf, NULL, 0);
 941         }
 942
 943         DRM_INFO("Manually setting wedged to %d\n", val);
 944
 945         atomic_set(&dev_priv->mm.wedged, val);
 946         if (val) {
 947                 wake_up_all(&dev_priv->irq_queue);
 948                 queue_work(dev_priv->wq, &dev_priv->error_work);
 949         }
 950
 951         return cnt;
 952 }
 953
 954 static const struct file_operations i915_wedged_fops = {
 955         .owner = THIS_MODULE,
 956         .open = i915_wedged_open,
 957         .read = i915_wedged_read,
 958         .write = i915_wedged_write,
 959 };
 960
 961 /* As the drm_debugfs_init() routines are called before dev->dev_private is
 962  * allocated we need to hook into the minor for release. */
 963 static int
 964 drm_add_fake_info_node(struct drm_minor *minor,
 965                        struct dentry *ent,
 966                        const void *key)
 967 {
 968         struct drm_info_node *node;
 969
 970         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
 971         if (node == NULL) {
 972                 debugfs_remove(ent);
 973                 return -ENOMEM;
 974         }
 975
 976         node->minor = minor;
 977         node->dent = ent;
 978         node->info_ent = (void *) key;
 979         list_add(&node->list, &minor->debugfs_nodes.list);
 980
 981         return 0;
 982 }
 983
 984 static int i915_wedged_create(struct dentry *root, struct drm_minor *minor)
 985 {
 986         struct drm_device *dev = minor->dev;
 987         struct dentry *ent;
 988
 989         ent = debugfs_create_file("i915_wedged",
 990                                   S_IRUGO | S_IWUSR,
 991                                   root, dev,
 992                                   &i915_wedged_fops);
 993         if (IS_ERR(ent))
 994                 return PTR_ERR(ent);
 995
 996         return drm_add_fake_info_node(minor, ent, &i915_wedged_fops);
 997 }
 998
 999 static struct drm_info_list i915_debugfs_list[] = {
1000         {"i915_capabilities", i915_capabilities, 0, 0},
1001         {"i915_gem_render_active", i915_gem_object_list_info, 0, (void *) RENDER_LIST},
1002         {"i915_gem_bsd_active", i915_gem_object_list_info, 0, (void *) BSD_LIST},
1003         {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
1004         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
1005         {"i915_gem_pinned", i915_gem_object_list_info, 0, (void *) PINNED_LIST},
1006         {"i915_gem_deferred_free", i915_gem_object_list_info, 0, (void *) DEFERRED_FREE_LIST},
1007         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
1008         {"i915_gem_request", i915_gem_request_info, 0},
1009         {"i915_gem_seqno", i915_gem_seqno_info, 0},
1010         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
1011         {"i915_gem_interrupt", i915_interrupt_info, 0},
1012         {"i915_gem_hws", i915_hws_info, 0},
1013         {"i915_ringbuffer_data", i915_ringbuffer_data, 0},
1014         {"i915_ringbuffer_info", i915_ringbuffer_info, 0},
1015         {"i915_batchbuffers", i915_batchbuffer_info, 0},
1016         {"i915_error_state", i915_error_state, 0},
1017         {"i915_rstdby_delays", i915_rstdby_delays, 0},
1018         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
1019         {"i915_delayfreq_table", i915_delayfreq_table, 0},
1020         {"i915_inttoext_table", i915_inttoext_table, 0},
1021         {"i915_drpc_info", i915_drpc_info, 0},
1022         {"i915_emon_status", i915_emon_status, 0},
1023         {"i915_gfxec", i915_gfxec, 0},
1024         {"i915_fbc_status", i915_fbc_status, 0},
1025         {"i915_sr_status", i915_sr_status, 0},
1026         {"i915_opregion", i915_opregion, 0},
1027         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
1028 };
1029 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
1030
1031 int i915_debugfs_init(struct drm_minor *minor)
1032 {
1033         int ret;
1034
1035         ret = i915_wedged_create(minor->debugfs_root, minor);
1036         if (ret)
1037                 return ret;
1038
1039         return drm_debugfs_create_files(i915_debugfs_list,
1040                                         I915_DEBUGFS_ENTRIES,
1041                                         minor->debugfs_root, minor);
1042 }
1043
1044 void i915_debugfs_cleanup(struct drm_minor *minor)
1045 {
1046         drm_debugfs_remove_files(i915_debugfs_list,
1047                                  I915_DEBUGFS_ENTRIES, minor);
1048         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
1049                                  1, minor);
1050 }
1051
1052 #endif /* CONFIG_DEBUG_FS */