drivers/gpu/drm/i915/i915_debugfs.c

   1 /*
   2  * Copyright © 2008 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *    Eric Anholt <eric@anholt.net>
  25  *    Keith Packard <keithp@keithp.com>
  26  *
  27  */
  28
  29 #include <linux/seq_file.h>
  30 #include <linux/debugfs.h>
  31 #include <linux/slab.h>
  32 #include "drmP.h"
  33 #include "drm.h"
  34 #include "intel_drv.h"
  35 #include "i915_drm.h"
  36 #include "i915_drv.h"
  37
  38 #define DRM_I915_RING_DEBUG 1
  39
  40
  41 #if defined(CONFIG_DEBUG_FS)
  42
  43 enum {
  44         ACTIVE_LIST,
  45         FLUSHING_LIST,
  46         INACTIVE_LIST,
  47         PINNED_LIST,
  48         DEFERRED_FREE_LIST,
  49 };
  50
  51 static const char *yesno(int v)
  52 {
  53         return v ? "yes" : "no";
  54 }
  55
  56 static int i915_capabilities(struct seq_file *m, void *data)
  57 {
  58         struct drm_info_node *node = (struct drm_info_node *) m->private;
  59         struct drm_device *dev = node->minor->dev;
  60         const struct intel_device_info *info = INTEL_INFO(dev);
  61
  62         seq_printf(m, "gen: %d\n", info->gen);
  63 #define B(x) seq_printf(m, #x ": %s\n", yesno(info->x))
  64         B(is_mobile);
  65         B(is_i85x);
  66         B(is_i915g);
  67         B(is_i945gm);
  68         B(is_g33);
  69         B(need_gfx_hws);
  70         B(is_g4x);
  71         B(is_pineview);
  72         B(is_broadwater);
  73         B(is_crestline);
  74         B(is_ironlake);
  75         B(has_fbc);
  76         B(has_rc6);
  77         B(has_pipe_cxsr);
  78         B(has_hotplug);
  79         B(cursor_needs_physical);
  80         B(has_overlay);
  81         B(overlay_needs_physical);
  82         B(supports_tv);
  83 #undef B
  84
  85         return 0;
  86 }
  87
  88 static const char *get_pin_flag(struct drm_i915_gem_object *obj_priv)
  89 {
  90         if (obj_priv->user_pin_count > 0)
  91                 return "P";
  92         else if (obj_priv->pin_count > 0)
  93                 return "p";
  94         else
  95                 return " ";
  96 }
  97
  98 static const char *get_tiling_flag(struct drm_i915_gem_object *obj_priv)
  99 {
 100     switch (obj_priv->tiling_mode) {
 101     default:
 102     case I915_TILING_NONE: return " ";
 103     case I915_TILING_X: return "X";
 104     case I915_TILING_Y: return "Y";
 105     }
 106 }
 107
 108 static void
 109 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 110 {
 111         seq_printf(m, "%p: %s%s %8zd %08x %08x %d%s%s",
 112                    &obj->base,
 113                    get_pin_flag(obj),
 114                    get_tiling_flag(obj),
 115                    obj->base.size,
 116                    obj->base.read_domains,
 117                    obj->base.write_domain,
 118                    obj->last_rendering_seqno,
 119                    obj->dirty ? " dirty" : "",
 120                    obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
 121         if (obj->base.name)
 122                 seq_printf(m, " (name: %d)", obj->base.name);
 123         if (obj->fence_reg != I915_FENCE_REG_NONE)
 124                 seq_printf(m, " (fence: %d)", obj->fence_reg);
 125         if (obj->gtt_space != NULL)
 126                 seq_printf(m, " (gtt_offset: %08x)", obj->gtt_offset);
 127         if (obj->ring != NULL)
 128                 seq_printf(m, " (%s)", obj->ring->name);
 129 }
 130
 131 static int i915_gem_object_list_info(struct seq_file *m, void *data)
 132 {
 133         struct drm_info_node *node = (struct drm_info_node *) m->private;
 134         uintptr_t list = (uintptr_t) node->info_ent->data;
 135         struct list_head *head;
 136         struct drm_device *dev = node->minor->dev;
 137         drm_i915_private_t *dev_priv = dev->dev_private;
 138         struct drm_i915_gem_object *obj_priv;
 139         size_t total_obj_size, total_gtt_size;
 140         int count, ret;
 141
 142         ret = mutex_lock_interruptible(&dev->struct_mutex);
 143         if (ret)
 144                 return ret;
 145
 146         switch (list) {
 147         case ACTIVE_LIST:
 148                 seq_printf(m, "Active:\n");
 149                 head = &dev_priv->mm.active_list;
 150                 break;
 151         case INACTIVE_LIST:
 152                 seq_printf(m, "Inactive:\n");
 153                 head = &dev_priv->mm.inactive_list;
 154                 break;
 155         case PINNED_LIST:
 156                 seq_printf(m, "Pinned:\n");
 157                 head = &dev_priv->mm.pinned_list;
 158                 break;
 159         case FLUSHING_LIST:
 160                 seq_printf(m, "Flushing:\n");
 161                 head = &dev_priv->mm.flushing_list;
 162                 break;
 163         case DEFERRED_FREE_LIST:
 164                 seq_printf(m, "Deferred free:\n");
 165                 head = &dev_priv->mm.deferred_free_list;
 166                 break;
 167         default:
 168                 mutex_unlock(&dev->struct_mutex);
 169                 return -EINVAL;
 170         }
 171
 172         total_obj_size = total_gtt_size = count = 0;
 173         list_for_each_entry(obj_priv, head, mm_list) {
 174                 seq_printf(m, "   ");
 175                 describe_obj(m, obj_priv);
 176                 seq_printf(m, "\n");
 177                 total_obj_size += obj_priv->base.size;
 178                 total_gtt_size += obj_priv->gtt_space->size;
 179                 count++;
 180         }
 181         mutex_unlock(&dev->struct_mutex);
 182
 183         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 184                    count, total_obj_size, total_gtt_size);
 185         return 0;
 186 }
 187
 188 static int i915_gem_object_info(struct seq_file *m, void* data)
 189 {
 190         struct drm_info_node *node = (struct drm_info_node *) m->private;
 191         struct drm_device *dev = node->minor->dev;
 192         struct drm_i915_private *dev_priv = dev->dev_private;
 193         int ret;
 194
 195         ret = mutex_lock_interruptible(&dev->struct_mutex);
 196         if (ret)
 197                 return ret;
 198
 199         seq_printf(m, "%u objects\n", dev_priv->mm.object_count);
 200         seq_printf(m, "%zu object bytes\n", dev_priv->mm.object_memory);
 201         seq_printf(m, "%u pinned\n", dev_priv->mm.pin_count);
 202         seq_printf(m, "%zu pin bytes\n", dev_priv->mm.pin_memory);
 203         seq_printf(m, "%u objects in gtt\n", dev_priv->mm.gtt_count);
 204         seq_printf(m, "%zu gtt bytes\n", dev_priv->mm.gtt_memory);
 205         seq_printf(m, "%zu gtt total\n", dev_priv->mm.gtt_total);
 206
 207         mutex_unlock(&dev->struct_mutex);
 208
 209         return 0;
 210 }
 211
 212
 213 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
 214 {
 215         struct drm_info_node *node = (struct drm_info_node *) m->private;
 216         struct drm_device *dev = node->minor->dev;
 217         unsigned long flags;
 218         struct intel_crtc *crtc;
 219
 220         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
 221                 const char *pipe = crtc->pipe ? "B" : "A";
 222                 const char *plane = crtc->plane ? "B" : "A";
 223                 struct intel_unpin_work *work;
 224
 225                 spin_lock_irqsave(&dev->event_lock, flags);
 226                 work = crtc->unpin_work;
 227                 if (work == NULL) {
 228                         seq_printf(m, "No flip due on pipe %s (plane %s)\n",
 229                                    pipe, plane);
 230                 } else {
 231                         if (!work->pending) {
 232                                 seq_printf(m, "Flip queued on pipe %s (plane %s)\n",
 233                                            pipe, plane);
 234                         } else {
 235                                 seq_printf(m, "Flip pending (waiting for vsync) on pipe %s (plane %s)\n",
 236                                            pipe, plane);
 237                         }
 238                         if (work->enable_stall_check)
 239                                 seq_printf(m, "Stall check enabled, ");
 240                         else
 241                                 seq_printf(m, "Stall check waiting for page flip ioctl, ");
 242                         seq_printf(m, "%d prepares\n", work->pending);
 243
 244                         if (work->old_fb_obj) {
 245                                 struct drm_i915_gem_object *obj_priv = to_intel_bo(work->old_fb_obj);
 246                                 if(obj_priv)
 247                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj_priv->gtt_offset );
 248                         }
 249                         if (work->pending_flip_obj) {
 250                                 struct drm_i915_gem_object *obj_priv = to_intel_bo(work->pending_flip_obj);
 251                                 if(obj_priv)
 252                                         seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj_priv->gtt_offset );
 253                         }
 254                 }
 255                 spin_unlock_irqrestore(&dev->event_lock, flags);
 256         }
 257
 258         return 0;
 259 }
 260
 261 static int i915_gem_request_info(struct seq_file *m, void *data)
 262 {
 263         struct drm_info_node *node = (struct drm_info_node *) m->private;
 264         struct drm_device *dev = node->minor->dev;
 265         drm_i915_private_t *dev_priv = dev->dev_private;
 266         struct drm_i915_gem_request *gem_request;
 267         int ret;
 268
 269         ret = mutex_lock_interruptible(&dev->struct_mutex);
 270         if (ret)
 271                 return ret;
 272
 273         seq_printf(m, "Request:\n");
 274         list_for_each_entry(gem_request, &dev_priv->render_ring.request_list,
 275                         list) {
 276                 seq_printf(m, "    %d @ %d\n",
 277                            gem_request->seqno,
 278                            (int) (jiffies - gem_request->emitted_jiffies));
 279         }
 280         mutex_unlock(&dev->struct_mutex);
 281
 282         return 0;
 283 }
 284
 285 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 286 {
 287         struct drm_info_node *node = (struct drm_info_node *) m->private;
 288         struct drm_device *dev = node->minor->dev;
 289         drm_i915_private_t *dev_priv = dev->dev_private;
 290         int ret;
 291
 292         ret = mutex_lock_interruptible(&dev->struct_mutex);
 293         if (ret)
 294                 return ret;
 295
 296         if (dev_priv->render_ring.status_page.page_addr != NULL) {
 297                 seq_printf(m, "Current sequence: %d\n",
 298                            dev_priv->render_ring.get_seqno(dev, &dev_priv->render_ring));
 299         } else {
 300                 seq_printf(m, "Current sequence: hws uninitialized\n");
 301         }
 302         seq_printf(m, "Waiter sequence:  %d\n",
 303                         dev_priv->mm.waiting_gem_seqno);
 304         seq_printf(m, "IRQ sequence:     %d\n", dev_priv->mm.irq_gem_seqno);
 305
 306         mutex_unlock(&dev->struct_mutex);
 307
 308         return 0;
 309 }
 310
 311
 312 static int i915_interrupt_info(struct seq_file *m, void *data)
 313 {
 314         struct drm_info_node *node = (struct drm_info_node *) m->private;
 315         struct drm_device *dev = node->minor->dev;
 316         drm_i915_private_t *dev_priv = dev->dev_private;
 317         int ret;
 318
 319         ret = mutex_lock_interruptible(&dev->struct_mutex);
 320         if (ret)
 321                 return ret;
 322
 323         if (!HAS_PCH_SPLIT(dev)) {
 324                 seq_printf(m, "Interrupt enable:    %08x\n",
 325                            I915_READ(IER));
 326                 seq_printf(m, "Interrupt identity:  %08x\n",
 327                            I915_READ(IIR));
 328                 seq_printf(m, "Interrupt mask:      %08x\n",
 329                            I915_READ(IMR));
 330                 seq_printf(m, "Pipe A stat:         %08x\n",
 331                            I915_READ(PIPEASTAT));
 332                 seq_printf(m, "Pipe B stat:         %08x\n",
 333                            I915_READ(PIPEBSTAT));
 334         } else {
 335                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
 336                            I915_READ(DEIER));
 337                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
 338                            I915_READ(DEIIR));
 339                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
 340                            I915_READ(DEIMR));
 341                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
 342                            I915_READ(SDEIER));
 343                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
 344                            I915_READ(SDEIIR));
 345                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
 346                            I915_READ(SDEIMR));
 347                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
 348                            I915_READ(GTIER));
 349                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
 350                            I915_READ(GTIIR));
 351                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
 352                            I915_READ(GTIMR));
 353         }
 354         seq_printf(m, "Interrupts received: %d\n",
 355                    atomic_read(&dev_priv->irq_received));
 356         if (dev_priv->render_ring.status_page.page_addr != NULL) {
 357                 seq_printf(m, "Current sequence:    %d\n",
 358                            dev_priv->render_ring.get_seqno(dev, &dev_priv->render_ring));
 359         } else {
 360                 seq_printf(m, "Current sequence:    hws uninitialized\n");
 361         }
 362         seq_printf(m, "Waiter sequence:     %d\n",
 363                    dev_priv->mm.waiting_gem_seqno);
 364         seq_printf(m, "IRQ sequence:        %d\n",
 365                    dev_priv->mm.irq_gem_seqno);
 366         mutex_unlock(&dev->struct_mutex);
 367
 368         return 0;
 369 }
 370
 371 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 372 {
 373         struct drm_info_node *node = (struct drm_info_node *) m->private;
 374         struct drm_device *dev = node->minor->dev;
 375         drm_i915_private_t *dev_priv = dev->dev_private;
 376         int i, ret;
 377
 378         ret = mutex_lock_interruptible(&dev->struct_mutex);
 379         if (ret)
 380                 return ret;
 381
 382         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 383         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 384         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 385                 struct drm_gem_object *obj = dev_priv->fence_regs[i].obj;
 386
 387                 if (obj == NULL) {
 388                         seq_printf(m, "Fenced object[%2d] = unused\n", i);
 389                 } else {
 390                         struct drm_i915_gem_object *obj_priv;
 391
 392                         obj_priv = to_intel_bo(obj);
 393                         seq_printf(m, "Fenced object[%2d] = %p: %s "
 394                                    "%08x %08zx %08x %s %08x %08x %d",
 395                                    i, obj, get_pin_flag(obj_priv),
 396                                    obj_priv->gtt_offset,
 397                                    obj->size, obj_priv->stride,
 398                                    get_tiling_flag(obj_priv),
 399                                    obj->read_domains, obj->write_domain,
 400                                    obj_priv->last_rendering_seqno);
 401                         if (obj->name)
 402                                 seq_printf(m, " (name: %d)", obj->name);
 403                         seq_printf(m, "\n");
 404                 }
 405         }
 406         mutex_unlock(&dev->struct_mutex);
 407
 408         return 0;
 409 }
 410
 411 static int i915_hws_info(struct seq_file *m, void *data)
 412 {
 413         struct drm_info_node *node = (struct drm_info_node *) m->private;
 414         struct drm_device *dev = node->minor->dev;
 415         drm_i915_private_t *dev_priv = dev->dev_private;
 416         int i;
 417         volatile u32 *hws;
 418
 419         hws = (volatile u32 *)dev_priv->render_ring.status_page.page_addr;
 420         if (hws == NULL)
 421                 return 0;
 422
 423         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 424                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 425                            i * 4,
 426                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 427         }
 428         return 0;
 429 }
 430
 431 static void i915_dump_object(struct seq_file *m,
 432                              struct io_mapping *mapping,
 433                              struct drm_i915_gem_object *obj_priv)
 434 {
 435         int page, page_count, i;
 436
 437         page_count = obj_priv->base.size / PAGE_SIZE;
 438         for (page = 0; page < page_count; page++) {
 439                 u32 *mem = io_mapping_map_wc(mapping,
 440                                              obj_priv->gtt_offset + page * PAGE_SIZE);
 441                 for (i = 0; i < PAGE_SIZE; i += 4)
 442                         seq_printf(m, "%08x :  %08x\n", i, mem[i / 4]);
 443                 io_mapping_unmap(mem);
 444         }
 445 }
 446
 447 static int i915_batchbuffer_info(struct seq_file *m, void *data)
 448 {
 449         struct drm_info_node *node = (struct drm_info_node *) m->private;
 450         struct drm_device *dev = node->minor->dev;
 451         drm_i915_private_t *dev_priv = dev->dev_private;
 452         struct drm_gem_object *obj;
 453         struct drm_i915_gem_object *obj_priv;
 454         int ret;
 455
 456         ret = mutex_lock_interruptible(&dev->struct_mutex);
 457         if (ret)
 458                 return ret;
 459
 460         list_for_each_entry(obj_priv, &dev_priv->mm.active_list, mm_list) {
 461                 obj = &obj_priv->base;
 462                 if (obj->read_domains & I915_GEM_DOMAIN_COMMAND) {
 463                     seq_printf(m, "--- gtt_offset = 0x%08x\n",
 464                                obj_priv->gtt_offset);
 465                     i915_dump_object(m, dev_priv->mm.gtt_mapping, obj_priv);
 466                 }
 467         }
 468
 469         mutex_unlock(&dev->struct_mutex);
 470
 471         return 0;
 472 }
 473
 474 static int i915_ringbuffer_data(struct seq_file *m, void *data)
 475 {
 476         struct drm_info_node *node = (struct drm_info_node *) m->private;
 477         struct drm_device *dev = node->minor->dev;
 478         drm_i915_private_t *dev_priv = dev->dev_private;
 479         int ret;
 480
 481         ret = mutex_lock_interruptible(&dev->struct_mutex);
 482         if (ret)
 483                 return ret;
 484
 485         if (!dev_priv->render_ring.gem_object) {
 486                 seq_printf(m, "No ringbuffer setup\n");
 487         } else {
 488                 u8 *virt = dev_priv->render_ring.virtual_start;
 489                 uint32_t off;
 490
 491                 for (off = 0; off < dev_priv->render_ring.size; off += 4) {
 492                         uint32_t *ptr = (uint32_t *)(virt + off);
 493                         seq_printf(m, "%08x :  %08x\n", off, *ptr);
 494                 }
 495         }
 496         mutex_unlock(&dev->struct_mutex);
 497
 498         return 0;
 499 }
 500
 501 static int i915_ringbuffer_info(struct seq_file *m, void *data)
 502 {
 503         struct drm_info_node *node = (struct drm_info_node *) m->private;
 504         struct drm_device *dev = node->minor->dev;
 505         drm_i915_private_t *dev_priv = dev->dev_private;
 506         unsigned int head, tail;
 507
 508         head = I915_READ(PRB0_HEAD) & HEAD_ADDR;
 509         tail = I915_READ(PRB0_TAIL) & TAIL_ADDR;
 510
 511         seq_printf(m, "RingHead :  %08x\n", head);
 512         seq_printf(m, "RingTail :  %08x\n", tail);
 513         seq_printf(m, "RingSize :  %08lx\n", dev_priv->render_ring.size);
 514         seq_printf(m, "Acthd :     %08x\n", I915_READ(INTEL_INFO(dev)->gen >= 4 ? ACTHD_I965 : ACTHD));
 515
 516         return 0;
 517 }
 518
 519 static const char *pin_flag(int pinned)
 520 {
 521         if (pinned > 0)
 522                 return " P";
 523         else if (pinned < 0)
 524                 return " p";
 525         else
 526                 return "";
 527 }
 528
 529 static const char *tiling_flag(int tiling)
 530 {
 531         switch (tiling) {
 532         default:
 533         case I915_TILING_NONE: return "";
 534         case I915_TILING_X: return " X";
 535         case I915_TILING_Y: return " Y";
 536         }
 537 }
 538
 539 static const char *dirty_flag(int dirty)
 540 {
 541         return dirty ? " dirty" : "";
 542 }
 543
 544 static const char *purgeable_flag(int purgeable)
 545 {
 546         return purgeable ? " purgeable" : "";
 547 }
 548
 549 static int i915_error_state(struct seq_file *m, void *unused)
 550 {
 551         struct drm_info_node *node = (struct drm_info_node *) m->private;
 552         struct drm_device *dev = node->minor->dev;
 553         drm_i915_private_t *dev_priv = dev->dev_private;
 554         struct drm_i915_error_state *error;
 555         unsigned long flags;
 556         int i, page, offset, elt;
 557
 558         spin_lock_irqsave(&dev_priv->error_lock, flags);
 559         if (!dev_priv->first_error) {
 560                 seq_printf(m, "no error state collected\n");
 561                 goto out;
 562         }
 563
 564         error = dev_priv->first_error;
 565
 566         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 567                    error->time.tv_usec);
 568         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
 569         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 570         seq_printf(m, "  PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 571         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm);
 572         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir);
 573         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr);
 574         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone);
 575         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd);
 576         if (INTEL_INFO(dev)->gen >= 4) {
 577                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps);
 578                 seq_printf(m, "  INSTDONE1: 0x%08x\n", error->instdone1);
 579         }
 580         seq_printf(m, "seqno: 0x%08x\n", error->seqno);
 581
 582         if (error->active_bo_count) {
 583                 seq_printf(m, "Buffers [%d]:\n", error->active_bo_count);
 584
 585                 for (i = 0; i < error->active_bo_count; i++) {
 586                         seq_printf(m, "  %08x %8zd %08x %08x %08x%s%s%s%s",
 587                                    error->active_bo[i].gtt_offset,
 588                                    error->active_bo[i].size,
 589                                    error->active_bo[i].read_domains,
 590                                    error->active_bo[i].write_domain,
 591                                    error->active_bo[i].seqno,
 592                                    pin_flag(error->active_bo[i].pinned),
 593                                    tiling_flag(error->active_bo[i].tiling),
 594                                    dirty_flag(error->active_bo[i].dirty),
 595                                    purgeable_flag(error->active_bo[i].purgeable));
 596
 597                         if (error->active_bo[i].name)
 598                                 seq_printf(m, " (name: %d)", error->active_bo[i].name);
 599                         if (error->active_bo[i].fence_reg != I915_FENCE_REG_NONE)
 600                                 seq_printf(m, " (fence: %d)", error->active_bo[i].fence_reg);
 601
 602                         seq_printf(m, "\n");
 603                 }
 604         }
 605
 606         for (i = 0; i < ARRAY_SIZE(error->batchbuffer); i++) {
 607                 if (error->batchbuffer[i]) {
 608                         struct drm_i915_error_object *obj = error->batchbuffer[i];
 609
 610                         seq_printf(m, "--- gtt_offset = 0x%08x\n", obj->gtt_offset);
 611                         offset = 0;
 612                         for (page = 0; page < obj->page_count; page++) {
 613                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 614                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 615                                         offset += 4;
 616                                 }
 617                         }
 618                 }
 619         }
 620
 621         if (error->ringbuffer) {
 622                 struct drm_i915_error_object *obj = error->ringbuffer;
 623
 624                 seq_printf(m, "--- ringbuffer = 0x%08x\n", obj->gtt_offset);
 625                 offset = 0;
 626                 for (page = 0; page < obj->page_count; page++) {
 627                         for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 628                                 seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 629                                 offset += 4;
 630                         }
 631                 }
 632         }
 633
 634         if (error->overlay)
 635                 intel_overlay_print_error_state(m, error->overlay);
 636
 637 out:
 638         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
 639
 640         return 0;
 641 }
 642
 643 static int i915_rstdby_delays(struct seq_file *m, void *unused)
 644 {
 645         struct drm_info_node *node = (struct drm_info_node *) m->private;
 646         struct drm_device *dev = node->minor->dev;
 647         drm_i915_private_t *dev_priv = dev->dev_private;
 648         u16 crstanddelay = I915_READ16(CRSTANDVID);
 649
 650         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
 651
 652         return 0;
 653 }
 654
 655 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
 656 {
 657         struct drm_info_node *node = (struct drm_info_node *) m->private;
 658         struct drm_device *dev = node->minor->dev;
 659         drm_i915_private_t *dev_priv = dev->dev_private;
 660         u16 rgvswctl = I915_READ16(MEMSWCTL);
 661         u16 rgvstat = I915_READ16(MEMSTAT_ILK);
 662
 663         seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 664         seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
 665         seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 666                    MEMSTAT_VID_SHIFT);
 667         seq_printf(m, "Current P-state: %d\n",
 668                    (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
 669
 670         return 0;
 671 }
 672
 673 static int i915_delayfreq_table(struct seq_file *m, void *unused)
 674 {
 675         struct drm_info_node *node = (struct drm_info_node *) m->private;
 676         struct drm_device *dev = node->minor->dev;
 677         drm_i915_private_t *dev_priv = dev->dev_private;
 678         u32 delayfreq;
 679         int i;
 680
 681         for (i = 0; i < 16; i++) {
 682                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
 683                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
 684                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
 685         }
 686
 687         return 0;
 688 }
 689
 690 static inline int MAP_TO_MV(int map)
 691 {
 692         return 1250 - (map * 25);
 693 }
 694
 695 static int i915_inttoext_table(struct seq_file *m, void *unused)
 696 {
 697         struct drm_info_node *node = (struct drm_info_node *) m->private;
 698         struct drm_device *dev = node->minor->dev;
 699         drm_i915_private_t *dev_priv = dev->dev_private;
 700         u32 inttoext;
 701         int i;
 702
 703         for (i = 1; i <= 32; i++) {
 704                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
 705                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
 706         }
 707
 708         return 0;
 709 }
 710
 711 static int i915_drpc_info(struct seq_file *m, void *unused)
 712 {
 713         struct drm_info_node *node = (struct drm_info_node *) m->private;
 714         struct drm_device *dev = node->minor->dev;
 715         drm_i915_private_t *dev_priv = dev->dev_private;
 716         u32 rgvmodectl = I915_READ(MEMMODECTL);
 717         u32 rstdbyctl = I915_READ(MCHBAR_RENDER_STANDBY);
 718         u16 crstandvid = I915_READ16(CRSTANDVID);
 719
 720         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
 721                    "yes" : "no");
 722         seq_printf(m, "Boost freq: %d\n",
 723                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
 724                    MEMMODE_BOOST_FREQ_SHIFT);
 725         seq_printf(m, "HW control enabled: %s\n",
 726                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
 727         seq_printf(m, "SW control enabled: %s\n",
 728                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
 729         seq_printf(m, "Gated voltage change: %s\n",
 730                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
 731         seq_printf(m, "Starting frequency: P%d\n",
 732                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
 733         seq_printf(m, "Max P-state: P%d\n",
 734                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
 735         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
 736         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
 737         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
 738         seq_printf(m, "Render standby enabled: %s\n",
 739                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
 740
 741         return 0;
 742 }
 743
 744 static int i915_fbc_status(struct seq_file *m, void *unused)
 745 {
 746         struct drm_info_node *node = (struct drm_info_node *) m->private;
 747         struct drm_device *dev = node->minor->dev;
 748         drm_i915_private_t *dev_priv = dev->dev_private;
 749
 750         if (!I915_HAS_FBC(dev)) {
 751                 seq_printf(m, "FBC unsupported on this chipset\n");
 752                 return 0;
 753         }
 754
 755         if (intel_fbc_enabled(dev)) {
 756                 seq_printf(m, "FBC enabled\n");
 757         } else {
 758                 seq_printf(m, "FBC disabled: ");
 759                 switch (dev_priv->no_fbc_reason) {
 760                 case FBC_NO_OUTPUT:
 761                         seq_printf(m, "no outputs");
 762                         break;
 763                 case FBC_STOLEN_TOO_SMALL:
 764                         seq_printf(m, "not enough stolen memory");
 765                         break;
 766                 case FBC_UNSUPPORTED_MODE:
 767                         seq_printf(m, "mode not supported");
 768                         break;
 769                 case FBC_MODE_TOO_LARGE:
 770                         seq_printf(m, "mode too large");
 771                         break;
 772                 case FBC_BAD_PLANE:
 773                         seq_printf(m, "FBC unsupported on plane");
 774                         break;
 775                 case FBC_NOT_TILED:
 776                         seq_printf(m, "scanout buffer not tiled");
 777                         break;
 778                 case FBC_MULTIPLE_PIPES:
 779                         seq_printf(m, "multiple pipes are enabled");
 780                         break;
 781                 default:
 782                         seq_printf(m, "unknown reason");
 783                 }
 784                 seq_printf(m, "\n");
 785         }
 786         return 0;
 787 }
 788
 789 static int i915_sr_status(struct seq_file *m, void *unused)
 790 {
 791         struct drm_info_node *node = (struct drm_info_node *) m->private;
 792         struct drm_device *dev = node->minor->dev;
 793         drm_i915_private_t *dev_priv = dev->dev_private;
 794         bool sr_enabled = false;
 795
 796         if (IS_IRONLAKE(dev))
 797                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
 798         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
 799                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
 800         else if (IS_I915GM(dev))
 801                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
 802         else if (IS_PINEVIEW(dev))
 803                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
 804
 805         seq_printf(m, "self-refresh: %s\n",
 806                    sr_enabled ? "enabled" : "disabled");
 807
 808         return 0;
 809 }
 810
 811 static int i915_emon_status(struct seq_file *m, void *unused)
 812 {
 813         struct drm_info_node *node = (struct drm_info_node *) m->private;
 814         struct drm_device *dev = node->minor->dev;
 815         drm_i915_private_t *dev_priv = dev->dev_private;
 816         unsigned long temp, chipset, gfx;
 817         int ret;
 818
 819         ret = mutex_lock_interruptible(&dev->struct_mutex);
 820         if (ret)
 821                 return ret;
 822
 823         temp = i915_mch_val(dev_priv);
 824         chipset = i915_chipset_val(dev_priv);
 825         gfx = i915_gfx_val(dev_priv);
 826         mutex_unlock(&dev->struct_mutex);
 827
 828         seq_printf(m, "GMCH temp: %ld\n", temp);
 829         seq_printf(m, "Chipset power: %ld\n", chipset);
 830         seq_printf(m, "GFX power: %ld\n", gfx);
 831         seq_printf(m, "Total power: %ld\n", chipset + gfx);
 832
 833         return 0;
 834 }
 835
 836 static int i915_gfxec(struct seq_file *m, void *unused)
 837 {
 838         struct drm_info_node *node = (struct drm_info_node *) m->private;
 839         struct drm_device *dev = node->minor->dev;
 840         drm_i915_private_t *dev_priv = dev->dev_private;
 841
 842         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
 843
 844         return 0;
 845 }
 846
 847 static int i915_opregion(struct seq_file *m, void *unused)
 848 {
 849         struct drm_info_node *node = (struct drm_info_node *) m->private;
 850         struct drm_device *dev = node->minor->dev;
 851         drm_i915_private_t *dev_priv = dev->dev_private;
 852         struct intel_opregion *opregion = &dev_priv->opregion;
 853         int ret;
 854
 855         ret = mutex_lock_interruptible(&dev->struct_mutex);
 856         if (ret)
 857                 return ret;
 858
 859         if (opregion->header)
 860                 seq_write(m, opregion->header, OPREGION_SIZE);
 861
 862         mutex_unlock(&dev->struct_mutex);
 863
 864         return 0;
 865 }
 866
 867 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
 868 {
 869         struct drm_info_node *node = (struct drm_info_node *) m->private;
 870         struct drm_device *dev = node->minor->dev;
 871         drm_i915_private_t *dev_priv = dev->dev_private;
 872         struct intel_fbdev *ifbdev;
 873         struct intel_framebuffer *fb;
 874         int ret;
 875
 876         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
 877         if (ret)
 878                 return ret;
 879
 880         ifbdev = dev_priv->fbdev;
 881         fb = to_intel_framebuffer(ifbdev->helper.fb);
 882
 883         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
 884                    fb->base.width,
 885                    fb->base.height,
 886                    fb->base.depth,
 887                    fb->base.bits_per_pixel);
 888         describe_obj(m, to_intel_bo(fb->obj));
 889         seq_printf(m, "\n");
 890
 891         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
 892                 if (&fb->base == ifbdev->helper.fb)
 893                         continue;
 894
 895                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
 896                            fb->base.width,
 897                            fb->base.height,
 898                            fb->base.depth,
 899                            fb->base.bits_per_pixel);
 900                 describe_obj(m, to_intel_bo(fb->obj));
 901                 seq_printf(m, "\n");
 902         }
 903
 904         mutex_unlock(&dev->mode_config.mutex);
 905
 906         return 0;
 907 }
 908
 909 static int
 910 i915_wedged_open(struct inode *inode,
 911                  struct file *filp)
 912 {
 913         filp->private_data = inode->i_private;
 914         return 0;
 915 }
 916
 917 static ssize_t
 918 i915_wedged_read(struct file *filp,
 919                  char __user *ubuf,
 920                  size_t max,
 921                  loff_t *ppos)
 922 {
 923         struct drm_device *dev = filp->private_data;
 924         drm_i915_private_t *dev_priv = dev->dev_private;
 925         char buf[80];
 926         int len;
 927
 928         len = snprintf(buf, sizeof (buf),
 929                        "wedged :  %d\n",
 930                        atomic_read(&dev_priv->mm.wedged));
 931
 932         if (len > sizeof (buf))
 933                 len = sizeof (buf);
 934
 935         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
 936 }
 937
 938 static ssize_t
 939 i915_wedged_write(struct file *filp,
 940                   const char __user *ubuf,
 941                   size_t cnt,
 942                   loff_t *ppos)
 943 {
 944         struct drm_device *dev = filp->private_data;
 945         drm_i915_private_t *dev_priv = dev->dev_private;
 946         char buf[20];
 947         int val = 1;
 948
 949         if (cnt > 0) {
 950                 if (cnt > sizeof (buf) - 1)
 951                         return -EINVAL;
 952
 953                 if (copy_from_user(buf, ubuf, cnt))
 954                         return -EFAULT;
 955                 buf[cnt] = 0;
 956
 957                 val = simple_strtoul(buf, NULL, 0);
 958         }
 959
 960         DRM_INFO("Manually setting wedged to %d\n", val);
 961
 962         atomic_set(&dev_priv->mm.wedged, val);
 963         if (val) {
 964                 wake_up_all(&dev_priv->irq_queue);
 965                 queue_work(dev_priv->wq, &dev_priv->error_work);
 966         }
 967
 968         return cnt;
 969 }
 970
 971 static const struct file_operations i915_wedged_fops = {
 972         .owner = THIS_MODULE,
 973         .open = i915_wedged_open,
 974         .read = i915_wedged_read,
 975         .write = i915_wedged_write,
 976 };
 977
 978 /* As the drm_debugfs_init() routines are called before dev->dev_private is
 979  * allocated we need to hook into the minor for release. */
 980 static int
 981 drm_add_fake_info_node(struct drm_minor *minor,
 982                        struct dentry *ent,
 983                        const void *key)
 984 {
 985         struct drm_info_node *node;
 986
 987         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
 988         if (node == NULL) {
 989                 debugfs_remove(ent);
 990                 return -ENOMEM;
 991         }
 992
 993         node->minor = minor;
 994         node->dent = ent;
 995         node->info_ent = (void *) key;
 996         list_add(&node->list, &minor->debugfs_nodes.list);
 997
 998         return 0;
 999 }
1000
1001 static int i915_wedged_create(struct dentry *root, struct drm_minor *minor)
1002 {
1003         struct drm_device *dev = minor->dev;
1004         struct dentry *ent;
1005
1006         ent = debugfs_create_file("i915_wedged",
1007                                   S_IRUGO | S_IWUSR,
1008                                   root, dev,
1009                                   &i915_wedged_fops);
1010         if (IS_ERR(ent))
1011                 return PTR_ERR(ent);
1012
1013         return drm_add_fake_info_node(minor, ent, &i915_wedged_fops);
1014 }
1015
1016 static struct drm_info_list i915_debugfs_list[] = {
1017         {"i915_capabilities", i915_capabilities, 0, 0},
1018         {"i915_gem_objects", i915_gem_object_info, 0},
1019         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
1020         {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
1021         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
1022         {"i915_gem_pinned", i915_gem_object_list_info, 0, (void *) PINNED_LIST},
1023         {"i915_gem_deferred_free", i915_gem_object_list_info, 0, (void *) DEFERRED_FREE_LIST},
1024         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
1025         {"i915_gem_request", i915_gem_request_info, 0},
1026         {"i915_gem_seqno", i915_gem_seqno_info, 0},
1027         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
1028         {"i915_gem_interrupt", i915_interrupt_info, 0},
1029         {"i915_gem_hws", i915_hws_info, 0},
1030         {"i915_ringbuffer_data", i915_ringbuffer_data, 0},
1031         {"i915_ringbuffer_info", i915_ringbuffer_info, 0},
1032         {"i915_batchbuffers", i915_batchbuffer_info, 0},
1033         {"i915_error_state", i915_error_state, 0},
1034         {"i915_rstdby_delays", i915_rstdby_delays, 0},
1035         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
1036         {"i915_delayfreq_table", i915_delayfreq_table, 0},
1037         {"i915_inttoext_table", i915_inttoext_table, 0},
1038         {"i915_drpc_info", i915_drpc_info, 0},
1039         {"i915_emon_status", i915_emon_status, 0},
1040         {"i915_gfxec", i915_gfxec, 0},
1041         {"i915_fbc_status", i915_fbc_status, 0},
1042         {"i915_sr_status", i915_sr_status, 0},
1043         {"i915_opregion", i915_opregion, 0},
1044         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
1045 };
1046 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
1047
1048 int i915_debugfs_init(struct drm_minor *minor)
1049 {
1050         int ret;
1051
1052         ret = i915_wedged_create(minor->debugfs_root, minor);
1053         if (ret)
1054                 return ret;
1055
1056         return drm_debugfs_create_files(i915_debugfs_list,
1057                                         I915_DEBUGFS_ENTRIES,
1058                                         minor->debugfs_root, minor);
1059 }
1060
1061 void i915_debugfs_cleanup(struct drm_minor *minor)
1062 {
1063         drm_debugfs_remove_files(i915_debugfs_list,
1064                                  I915_DEBUGFS_ENTRIES, minor);
1065         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
1066                                  1, minor);
1067 }
1068
1069 #endif /* CONFIG_DEBUG_FS */