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 enum {
  52         RENDER_RING,
  53         BSD_RING,
  54         BLT_RING,
  55 };
  56
  57 static const char *yesno(int v)
  58 {
  59         return v ? "yes" : "no";
  60 }
  61
  62 static int i915_capabilities(struct seq_file *m, void *data)
  63 {
  64         struct drm_info_node *node = (struct drm_info_node *) m->private;
  65         struct drm_device *dev = node->minor->dev;
  66         const struct intel_device_info *info = INTEL_INFO(dev);
  67
  68         seq_printf(m, "gen: %d\n", info->gen);
  69 #define B(x) seq_printf(m, #x ": %s\n", yesno(info->x))
  70         B(is_mobile);
  71         B(is_i85x);
  72         B(is_i915g);
  73         B(is_i945gm);
  74         B(is_g33);
  75         B(need_gfx_hws);
  76         B(is_g4x);
  77         B(is_pineview);
  78         B(is_broadwater);
  79         B(is_crestline);
  80         B(has_fbc);
  81         B(has_rc6);
  82         B(has_pipe_cxsr);
  83         B(has_hotplug);
  84         B(cursor_needs_physical);
  85         B(has_overlay);
  86         B(overlay_needs_physical);
  87         B(supports_tv);
  88         B(has_bsd_ring);
  89         B(has_blt_ring);
  90 #undef B
  91
  92         return 0;
  93 }
  94
  95 static const char *get_pin_flag(struct drm_i915_gem_object *obj_priv)
  96 {
  97         if (obj_priv->user_pin_count > 0)
  98                 return "P";
  99         else if (obj_priv->pin_count > 0)
 100                 return "p";
 101         else
 102                 return " ";
 103 }
 104
 105 static const char *get_tiling_flag(struct drm_i915_gem_object *obj_priv)
 106 {
 107     switch (obj_priv->tiling_mode) {
 108     default:
 109     case I915_TILING_NONE: return " ";
 110     case I915_TILING_X: return "X";
 111     case I915_TILING_Y: return "Y";
 112     }
 113 }
 114
 115 static void
 116 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 117 {
 118         seq_printf(m, "%p: %s%s %8zd %08x %08x %d%s%s",
 119                    &obj->base,
 120                    get_pin_flag(obj),
 121                    get_tiling_flag(obj),
 122                    obj->base.size,
 123                    obj->base.read_domains,
 124                    obj->base.write_domain,
 125                    obj->last_rendering_seqno,
 126                    obj->dirty ? " dirty" : "",
 127                    obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
 128         if (obj->base.name)
 129                 seq_printf(m, " (name: %d)", obj->base.name);
 130         if (obj->fence_reg != I915_FENCE_REG_NONE)
 131                 seq_printf(m, " (fence: %d)", obj->fence_reg);
 132         if (obj->gtt_space != NULL)
 133                 seq_printf(m, " (gtt_offset: %08x)", obj->gtt_offset);
 134         if (obj->pin_mappable || obj->fault_mappable)
 135                 seq_printf(m, " (mappable)");
 136         if (obj->ring != NULL)
 137                 seq_printf(m, " (%s)", obj->ring->name);
 138 }
 139
 140 static int i915_gem_object_list_info(struct seq_file *m, void *data)
 141 {
 142         struct drm_info_node *node = (struct drm_info_node *) m->private;
 143         uintptr_t list = (uintptr_t) node->info_ent->data;
 144         struct list_head *head;
 145         struct drm_device *dev = node->minor->dev;
 146         drm_i915_private_t *dev_priv = dev->dev_private;
 147         struct drm_i915_gem_object *obj_priv;
 148         size_t total_obj_size, total_gtt_size;
 149         int count, ret;
 150
 151         ret = mutex_lock_interruptible(&dev->struct_mutex);
 152         if (ret)
 153                 return ret;
 154
 155         switch (list) {
 156         case ACTIVE_LIST:
 157                 seq_printf(m, "Active:\n");
 158                 head = &dev_priv->mm.active_list;
 159                 break;
 160         case INACTIVE_LIST:
 161                 seq_printf(m, "Inactive:\n");
 162                 head = &dev_priv->mm.inactive_list;
 163                 break;
 164         case PINNED_LIST:
 165                 seq_printf(m, "Pinned:\n");
 166                 head = &dev_priv->mm.pinned_list;
 167                 break;
 168         case FLUSHING_LIST:
 169                 seq_printf(m, "Flushing:\n");
 170                 head = &dev_priv->mm.flushing_list;
 171                 break;
 172         case DEFERRED_FREE_LIST:
 173                 seq_printf(m, "Deferred free:\n");
 174                 head = &dev_priv->mm.deferred_free_list;
 175                 break;
 176         default:
 177                 mutex_unlock(&dev->struct_mutex);
 178                 return -EINVAL;
 179         }
 180
 181         total_obj_size = total_gtt_size = count = 0;
 182         list_for_each_entry(obj_priv, head, mm_list) {
 183                 seq_printf(m, "   ");
 184                 describe_obj(m, obj_priv);
 185                 seq_printf(m, "\n");
 186                 total_obj_size += obj_priv->base.size;
 187                 total_gtt_size += obj_priv->gtt_space->size;
 188                 count++;
 189         }
 190         mutex_unlock(&dev->struct_mutex);
 191
 192         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 193                    count, total_obj_size, total_gtt_size);
 194         return 0;
 195 }
 196
 197 static int i915_gem_object_info(struct seq_file *m, void* data)
 198 {
 199         struct drm_info_node *node = (struct drm_info_node *) m->private;
 200         struct drm_device *dev = node->minor->dev;
 201         struct drm_i915_private *dev_priv = dev->dev_private;
 202         int ret;
 203
 204         ret = mutex_lock_interruptible(&dev->struct_mutex);
 205         if (ret)
 206                 return ret;
 207
 208         seq_printf(m, "%u objects\n", dev_priv->mm.object_count);
 209         seq_printf(m, "%zu object bytes\n", dev_priv->mm.object_memory);
 210         seq_printf(m, "%u pinned\n", dev_priv->mm.pin_count);
 211         seq_printf(m, "%zu pin bytes\n", dev_priv->mm.pin_memory);
 212         seq_printf(m, "%u mappable objects in gtt\n", dev_priv->mm.gtt_mappable_count);
 213         seq_printf(m, "%zu mappable gtt bytes\n", dev_priv->mm.gtt_mappable_memory);
 214         seq_printf(m, "%zu mappable gtt used bytes\n", dev_priv->mm.mappable_gtt_used);
 215         seq_printf(m, "%zu mappable gtt total\n", dev_priv->mm.mappable_gtt_total);
 216         seq_printf(m, "%u objects in gtt\n", dev_priv->mm.gtt_count);
 217         seq_printf(m, "%zu gtt bytes\n", dev_priv->mm.gtt_memory);
 218         seq_printf(m, "%zu gtt total\n", dev_priv->mm.gtt_total);
 219
 220         mutex_unlock(&dev->struct_mutex);
 221
 222         return 0;
 223 }
 224
 225
 226 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
 227 {
 228         struct drm_info_node *node = (struct drm_info_node *) m->private;
 229         struct drm_device *dev = node->minor->dev;
 230         unsigned long flags;
 231         struct intel_crtc *crtc;
 232
 233         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
 234                 const char *pipe = crtc->pipe ? "B" : "A";
 235                 const char *plane = crtc->plane ? "B" : "A";
 236                 struct intel_unpin_work *work;
 237
 238                 spin_lock_irqsave(&dev->event_lock, flags);
 239                 work = crtc->unpin_work;
 240                 if (work == NULL) {
 241                         seq_printf(m, "No flip due on pipe %s (plane %s)\n",
 242                                    pipe, plane);
 243                 } else {
 244                         if (!work->pending) {
 245                                 seq_printf(m, "Flip queued on pipe %s (plane %s)\n",
 246                                            pipe, plane);
 247                         } else {
 248                                 seq_printf(m, "Flip pending (waiting for vsync) on pipe %s (plane %s)\n",
 249                                            pipe, plane);
 250                         }
 251                         if (work->enable_stall_check)
 252                                 seq_printf(m, "Stall check enabled, ");
 253                         else
 254                                 seq_printf(m, "Stall check waiting for page flip ioctl, ");
 255                         seq_printf(m, "%d prepares\n", work->pending);
 256
 257                         if (work->old_fb_obj) {
 258                                 struct drm_i915_gem_object *obj_priv = to_intel_bo(work->old_fb_obj);
 259                                 if(obj_priv)
 260                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj_priv->gtt_offset );
 261                         }
 262                         if (work->pending_flip_obj) {
 263                                 struct drm_i915_gem_object *obj_priv = to_intel_bo(work->pending_flip_obj);
 264                                 if(obj_priv)
 265                                         seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj_priv->gtt_offset );
 266                         }
 267                 }
 268                 spin_unlock_irqrestore(&dev->event_lock, flags);
 269         }
 270
 271         return 0;
 272 }
 273
 274 static int i915_gem_request_info(struct seq_file *m, void *data)
 275 {
 276         struct drm_info_node *node = (struct drm_info_node *) m->private;
 277         struct drm_device *dev = node->minor->dev;
 278         drm_i915_private_t *dev_priv = dev->dev_private;
 279         struct drm_i915_gem_request *gem_request;
 280         int ret, count;
 281
 282         ret = mutex_lock_interruptible(&dev->struct_mutex);
 283         if (ret)
 284                 return ret;
 285
 286         count = 0;
 287         if (!list_empty(&dev_priv->render_ring.request_list)) {
 288                 seq_printf(m, "Render requests:\n");
 289                 list_for_each_entry(gem_request,
 290                                     &dev_priv->render_ring.request_list,
 291                                     list) {
 292                         seq_printf(m, "    %d @ %d\n",
 293                                    gem_request->seqno,
 294                                    (int) (jiffies - gem_request->emitted_jiffies));
 295                 }
 296                 count++;
 297         }
 298         if (!list_empty(&dev_priv->bsd_ring.request_list)) {
 299                 seq_printf(m, "BSD requests:\n");
 300                 list_for_each_entry(gem_request,
 301                                     &dev_priv->bsd_ring.request_list,
 302                                     list) {
 303                         seq_printf(m, "    %d @ %d\n",
 304                                    gem_request->seqno,
 305                                    (int) (jiffies - gem_request->emitted_jiffies));
 306                 }
 307                 count++;
 308         }
 309         if (!list_empty(&dev_priv->blt_ring.request_list)) {
 310                 seq_printf(m, "BLT requests:\n");
 311                 list_for_each_entry(gem_request,
 312                                     &dev_priv->blt_ring.request_list,
 313                                     list) {
 314                         seq_printf(m, "    %d @ %d\n",
 315                                    gem_request->seqno,
 316                                    (int) (jiffies - gem_request->emitted_jiffies));
 317                 }
 318                 count++;
 319         }
 320         mutex_unlock(&dev->struct_mutex);
 321
 322         if (count == 0)
 323                 seq_printf(m, "No requests\n");
 324
 325         return 0;
 326 }
 327
 328 static void i915_ring_seqno_info(struct seq_file *m,
 329                                  struct intel_ring_buffer *ring)
 330 {
 331         if (ring->get_seqno) {
 332                 seq_printf(m, "Current sequence (%s): %d\n",
 333                            ring->name, ring->get_seqno(ring));
 334                 seq_printf(m, "Waiter sequence (%s):  %d\n",
 335                            ring->name, ring->waiting_seqno);
 336                 seq_printf(m, "IRQ sequence (%s):     %d\n",
 337                            ring->name, ring->irq_seqno);
 338         }
 339 }
 340
 341 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 342 {
 343         struct drm_info_node *node = (struct drm_info_node *) m->private;
 344         struct drm_device *dev = node->minor->dev;
 345         drm_i915_private_t *dev_priv = dev->dev_private;
 346         int ret;
 347
 348         ret = mutex_lock_interruptible(&dev->struct_mutex);
 349         if (ret)
 350                 return ret;
 351
 352         i915_ring_seqno_info(m, &dev_priv->render_ring);
 353         i915_ring_seqno_info(m, &dev_priv->bsd_ring);
 354         i915_ring_seqno_info(m, &dev_priv->blt_ring);
 355
 356         mutex_unlock(&dev->struct_mutex);
 357
 358         return 0;
 359 }
 360
 361
 362 static int i915_interrupt_info(struct seq_file *m, void *data)
 363 {
 364         struct drm_info_node *node = (struct drm_info_node *) m->private;
 365         struct drm_device *dev = node->minor->dev;
 366         drm_i915_private_t *dev_priv = dev->dev_private;
 367         int ret;
 368
 369         ret = mutex_lock_interruptible(&dev->struct_mutex);
 370         if (ret)
 371                 return ret;
 372
 373         if (!HAS_PCH_SPLIT(dev)) {
 374                 seq_printf(m, "Interrupt enable:    %08x\n",
 375                            I915_READ(IER));
 376                 seq_printf(m, "Interrupt identity:  %08x\n",
 377                            I915_READ(IIR));
 378                 seq_printf(m, "Interrupt mask:      %08x\n",
 379                            I915_READ(IMR));
 380                 seq_printf(m, "Pipe A stat:         %08x\n",
 381                            I915_READ(PIPEASTAT));
 382                 seq_printf(m, "Pipe B stat:         %08x\n",
 383                            I915_READ(PIPEBSTAT));
 384         } else {
 385                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
 386                            I915_READ(DEIER));
 387                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
 388                            I915_READ(DEIIR));
 389                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
 390                            I915_READ(DEIMR));
 391                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
 392                            I915_READ(SDEIER));
 393                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
 394                            I915_READ(SDEIIR));
 395                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
 396                            I915_READ(SDEIMR));
 397                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
 398                            I915_READ(GTIER));
 399                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
 400                            I915_READ(GTIIR));
 401                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
 402                            I915_READ(GTIMR));
 403         }
 404         seq_printf(m, "Interrupts received: %d\n",
 405                    atomic_read(&dev_priv->irq_received));
 406         i915_ring_seqno_info(m, &dev_priv->render_ring);
 407         i915_ring_seqno_info(m, &dev_priv->bsd_ring);
 408         i915_ring_seqno_info(m, &dev_priv->blt_ring);
 409         mutex_unlock(&dev->struct_mutex);
 410
 411         return 0;
 412 }
 413
 414 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 415 {
 416         struct drm_info_node *node = (struct drm_info_node *) m->private;
 417         struct drm_device *dev = node->minor->dev;
 418         drm_i915_private_t *dev_priv = dev->dev_private;
 419         int i, ret;
 420
 421         ret = mutex_lock_interruptible(&dev->struct_mutex);
 422         if (ret)
 423                 return ret;
 424
 425         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 426         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 427         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 428                 struct drm_gem_object *obj = dev_priv->fence_regs[i].obj;
 429
 430                 seq_printf(m, "Fenced object[%2d] = ", i);
 431                 if (obj == NULL)
 432                         seq_printf(m, "unused");
 433                 else
 434                         describe_obj(m, to_intel_bo(obj));
 435                 seq_printf(m, "\n");
 436         }
 437         mutex_unlock(&dev->struct_mutex);
 438
 439         return 0;
 440 }
 441
 442 static int i915_hws_info(struct seq_file *m, void *data)
 443 {
 444         struct drm_info_node *node = (struct drm_info_node *) m->private;
 445         struct drm_device *dev = node->minor->dev;
 446         drm_i915_private_t *dev_priv = dev->dev_private;
 447         int i;
 448         volatile u32 *hws;
 449
 450         hws = (volatile u32 *)dev_priv->render_ring.status_page.page_addr;
 451         if (hws == NULL)
 452                 return 0;
 453
 454         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 455                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 456                            i * 4,
 457                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 458         }
 459         return 0;
 460 }
 461
 462 static void i915_dump_object(struct seq_file *m,
 463                              struct io_mapping *mapping,
 464                              struct drm_i915_gem_object *obj_priv)
 465 {
 466         int page, page_count, i;
 467
 468         page_count = obj_priv->base.size / PAGE_SIZE;
 469         for (page = 0; page < page_count; page++) {
 470                 u32 *mem = io_mapping_map_wc(mapping,
 471                                              obj_priv->gtt_offset + page * PAGE_SIZE);
 472                 for (i = 0; i < PAGE_SIZE; i += 4)
 473                         seq_printf(m, "%08x :  %08x\n", i, mem[i / 4]);
 474                 io_mapping_unmap(mem);
 475         }
 476 }
 477
 478 static int i915_batchbuffer_info(struct seq_file *m, void *data)
 479 {
 480         struct drm_info_node *node = (struct drm_info_node *) m->private;
 481         struct drm_device *dev = node->minor->dev;
 482         drm_i915_private_t *dev_priv = dev->dev_private;
 483         struct drm_gem_object *obj;
 484         struct drm_i915_gem_object *obj_priv;
 485         int ret;
 486
 487         ret = mutex_lock_interruptible(&dev->struct_mutex);
 488         if (ret)
 489                 return ret;
 490
 491         list_for_each_entry(obj_priv, &dev_priv->mm.active_list, mm_list) {
 492                 obj = &obj_priv->base;
 493                 if (obj->read_domains & I915_GEM_DOMAIN_COMMAND) {
 494                     seq_printf(m, "--- gtt_offset = 0x%08x\n",
 495                                obj_priv->gtt_offset);
 496                     i915_dump_object(m, dev_priv->mm.gtt_mapping, obj_priv);
 497                 }
 498         }
 499
 500         mutex_unlock(&dev->struct_mutex);
 501
 502         return 0;
 503 }
 504
 505 static int i915_ringbuffer_data(struct seq_file *m, void *data)
 506 {
 507         struct drm_info_node *node = (struct drm_info_node *) m->private;
 508         struct drm_device *dev = node->minor->dev;
 509         drm_i915_private_t *dev_priv = dev->dev_private;
 510         struct intel_ring_buffer *ring;
 511         int ret;
 512
 513         switch ((uintptr_t)node->info_ent->data) {
 514         case RENDER_RING: ring = &dev_priv->render_ring; break;
 515         case BSD_RING: ring = &dev_priv->bsd_ring; break;
 516         case BLT_RING: ring = &dev_priv->blt_ring; break;
 517         default: return -EINVAL;
 518         }
 519
 520         ret = mutex_lock_interruptible(&dev->struct_mutex);
 521         if (ret)
 522                 return ret;
 523
 524         if (!ring->gem_object) {
 525                 seq_printf(m, "No ringbuffer setup\n");
 526         } else {
 527                 u8 *virt = ring->virtual_start;
 528                 uint32_t off;
 529
 530                 for (off = 0; off < ring->size; off += 4) {
 531                         uint32_t *ptr = (uint32_t *)(virt + off);
 532                         seq_printf(m, "%08x :  %08x\n", off, *ptr);
 533                 }
 534         }
 535         mutex_unlock(&dev->struct_mutex);
 536
 537         return 0;
 538 }
 539
 540 static int i915_ringbuffer_info(struct seq_file *m, void *data)
 541 {
 542         struct drm_info_node *node = (struct drm_info_node *) m->private;
 543         struct drm_device *dev = node->minor->dev;
 544         drm_i915_private_t *dev_priv = dev->dev_private;
 545         struct intel_ring_buffer *ring;
 546
 547         switch ((uintptr_t)node->info_ent->data) {
 548         case RENDER_RING: ring = &dev_priv->render_ring; break;
 549         case BSD_RING: ring = &dev_priv->bsd_ring; break;
 550         case BLT_RING: ring = &dev_priv->blt_ring; break;
 551         default: return -EINVAL;
 552         }
 553
 554         if (ring->size == 0)
 555             return 0;
 556
 557         seq_printf(m, "Ring %s:\n", ring->name);
 558         seq_printf(m, "  Head :    %08x\n", I915_READ_HEAD(ring) & HEAD_ADDR);
 559         seq_printf(m, "  Tail :    %08x\n", I915_READ_TAIL(ring) & TAIL_ADDR);
 560         seq_printf(m, "  Size :    %08x\n", ring->size);
 561         seq_printf(m, "  Active :  %08x\n", intel_ring_get_active_head(ring));
 562         seq_printf(m, "  Control : %08x\n", I915_READ_CTL(ring));
 563         seq_printf(m, "  Start :   %08x\n", I915_READ_START(ring));
 564
 565         return 0;
 566 }
 567
 568 static const char *pin_flag(int pinned)
 569 {
 570         if (pinned > 0)
 571                 return " P";
 572         else if (pinned < 0)
 573                 return " p";
 574         else
 575                 return "";
 576 }
 577
 578 static const char *tiling_flag(int tiling)
 579 {
 580         switch (tiling) {
 581         default:
 582         case I915_TILING_NONE: return "";
 583         case I915_TILING_X: return " X";
 584         case I915_TILING_Y: return " Y";
 585         }
 586 }
 587
 588 static const char *dirty_flag(int dirty)
 589 {
 590         return dirty ? " dirty" : "";
 591 }
 592
 593 static const char *purgeable_flag(int purgeable)
 594 {
 595         return purgeable ? " purgeable" : "";
 596 }
 597
 598 static int i915_error_state(struct seq_file *m, void *unused)
 599 {
 600         struct drm_info_node *node = (struct drm_info_node *) m->private;
 601         struct drm_device *dev = node->minor->dev;
 602         drm_i915_private_t *dev_priv = dev->dev_private;
 603         struct drm_i915_error_state *error;
 604         unsigned long flags;
 605         int i, page, offset, elt;
 606
 607         spin_lock_irqsave(&dev_priv->error_lock, flags);
 608         if (!dev_priv->first_error) {
 609                 seq_printf(m, "no error state collected\n");
 610                 goto out;
 611         }
 612
 613         error = dev_priv->first_error;
 614
 615         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 616                    error->time.tv_usec);
 617         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
 618         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 619         seq_printf(m, "  PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 620         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm);
 621         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir);
 622         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr);
 623         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone);
 624         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd);
 625         if (INTEL_INFO(dev)->gen >= 4) {
 626                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps);
 627                 seq_printf(m, "  INSTDONE1: 0x%08x\n", error->instdone1);
 628         }
 629         seq_printf(m, "seqno: 0x%08x\n", error->seqno);
 630
 631         if (error->active_bo_count) {
 632                 seq_printf(m, "Buffers [%d]:\n", error->active_bo_count);
 633
 634                 for (i = 0; i < error->active_bo_count; i++) {
 635                         seq_printf(m, "  %08x %8zd %08x %08x %08x%s%s%s%s",
 636                                    error->active_bo[i].gtt_offset,
 637                                    error->active_bo[i].size,
 638                                    error->active_bo[i].read_domains,
 639                                    error->active_bo[i].write_domain,
 640                                    error->active_bo[i].seqno,
 641                                    pin_flag(error->active_bo[i].pinned),
 642                                    tiling_flag(error->active_bo[i].tiling),
 643                                    dirty_flag(error->active_bo[i].dirty),
 644                                    purgeable_flag(error->active_bo[i].purgeable));
 645
 646                         if (error->active_bo[i].name)
 647                                 seq_printf(m, " (name: %d)", error->active_bo[i].name);
 648                         if (error->active_bo[i].fence_reg != I915_FENCE_REG_NONE)
 649                                 seq_printf(m, " (fence: %d)", error->active_bo[i].fence_reg);
 650
 651                         seq_printf(m, "\n");
 652                 }
 653         }
 654
 655         for (i = 0; i < ARRAY_SIZE(error->batchbuffer); i++) {
 656                 if (error->batchbuffer[i]) {
 657                         struct drm_i915_error_object *obj = error->batchbuffer[i];
 658
 659                         seq_printf(m, "--- gtt_offset = 0x%08x\n", obj->gtt_offset);
 660                         offset = 0;
 661                         for (page = 0; page < obj->page_count; page++) {
 662                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 663                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 664                                         offset += 4;
 665                                 }
 666                         }
 667                 }
 668         }
 669
 670         if (error->ringbuffer) {
 671                 struct drm_i915_error_object *obj = error->ringbuffer;
 672
 673                 seq_printf(m, "--- ringbuffer = 0x%08x\n", obj->gtt_offset);
 674                 offset = 0;
 675                 for (page = 0; page < obj->page_count; page++) {
 676                         for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 677                                 seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 678                                 offset += 4;
 679                         }
 680                 }
 681         }
 682
 683         if (error->overlay)
 684                 intel_overlay_print_error_state(m, error->overlay);
 685
 686 out:
 687         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
 688
 689         return 0;
 690 }
 691
 692 static int i915_rstdby_delays(struct seq_file *m, void *unused)
 693 {
 694         struct drm_info_node *node = (struct drm_info_node *) m->private;
 695         struct drm_device *dev = node->minor->dev;
 696         drm_i915_private_t *dev_priv = dev->dev_private;
 697         u16 crstanddelay = I915_READ16(CRSTANDVID);
 698
 699         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
 700
 701         return 0;
 702 }
 703
 704 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
 705 {
 706         struct drm_info_node *node = (struct drm_info_node *) m->private;
 707         struct drm_device *dev = node->minor->dev;
 708         drm_i915_private_t *dev_priv = dev->dev_private;
 709         u16 rgvswctl = I915_READ16(MEMSWCTL);
 710         u16 rgvstat = I915_READ16(MEMSTAT_ILK);
 711
 712         seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 713         seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
 714         seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 715                    MEMSTAT_VID_SHIFT);
 716         seq_printf(m, "Current P-state: %d\n",
 717                    (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
 718
 719         return 0;
 720 }
 721
 722 static int i915_delayfreq_table(struct seq_file *m, void *unused)
 723 {
 724         struct drm_info_node *node = (struct drm_info_node *) m->private;
 725         struct drm_device *dev = node->minor->dev;
 726         drm_i915_private_t *dev_priv = dev->dev_private;
 727         u32 delayfreq;
 728         int i;
 729
 730         for (i = 0; i < 16; i++) {
 731                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
 732                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
 733                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
 734         }
 735
 736         return 0;
 737 }
 738
 739 static inline int MAP_TO_MV(int map)
 740 {
 741         return 1250 - (map * 25);
 742 }
 743
 744 static int i915_inttoext_table(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         u32 inttoext;
 750         int i;
 751
 752         for (i = 1; i <= 32; i++) {
 753                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
 754                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
 755         }
 756
 757         return 0;
 758 }
 759
 760 static int i915_drpc_info(struct seq_file *m, void *unused)
 761 {
 762         struct drm_info_node *node = (struct drm_info_node *) m->private;
 763         struct drm_device *dev = node->minor->dev;
 764         drm_i915_private_t *dev_priv = dev->dev_private;
 765         u32 rgvmodectl = I915_READ(MEMMODECTL);
 766         u32 rstdbyctl = I915_READ(MCHBAR_RENDER_STANDBY);
 767         u16 crstandvid = I915_READ16(CRSTANDVID);
 768
 769         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
 770                    "yes" : "no");
 771         seq_printf(m, "Boost freq: %d\n",
 772                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
 773                    MEMMODE_BOOST_FREQ_SHIFT);
 774         seq_printf(m, "HW control enabled: %s\n",
 775                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
 776         seq_printf(m, "SW control enabled: %s\n",
 777                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
 778         seq_printf(m, "Gated voltage change: %s\n",
 779                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
 780         seq_printf(m, "Starting frequency: P%d\n",
 781                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
 782         seq_printf(m, "Max P-state: P%d\n",
 783                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
 784         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
 785         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
 786         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
 787         seq_printf(m, "Render standby enabled: %s\n",
 788                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
 789
 790         return 0;
 791 }
 792
 793 static int i915_fbc_status(struct seq_file *m, void *unused)
 794 {
 795         struct drm_info_node *node = (struct drm_info_node *) m->private;
 796         struct drm_device *dev = node->minor->dev;
 797         drm_i915_private_t *dev_priv = dev->dev_private;
 798
 799         if (!I915_HAS_FBC(dev)) {
 800                 seq_printf(m, "FBC unsupported on this chipset\n");
 801                 return 0;
 802         }
 803
 804         if (intel_fbc_enabled(dev)) {
 805                 seq_printf(m, "FBC enabled\n");
 806         } else {
 807                 seq_printf(m, "FBC disabled: ");
 808                 switch (dev_priv->no_fbc_reason) {
 809                 case FBC_NO_OUTPUT:
 810                         seq_printf(m, "no outputs");
 811                         break;
 812                 case FBC_STOLEN_TOO_SMALL:
 813                         seq_printf(m, "not enough stolen memory");
 814                         break;
 815                 case FBC_UNSUPPORTED_MODE:
 816                         seq_printf(m, "mode not supported");
 817                         break;
 818                 case FBC_MODE_TOO_LARGE:
 819                         seq_printf(m, "mode too large");
 820                         break;
 821                 case FBC_BAD_PLANE:
 822                         seq_printf(m, "FBC unsupported on plane");
 823                         break;
 824                 case FBC_NOT_TILED:
 825                         seq_printf(m, "scanout buffer not tiled");
 826                         break;
 827                 case FBC_MULTIPLE_PIPES:
 828                         seq_printf(m, "multiple pipes are enabled");
 829                         break;
 830                 default:
 831                         seq_printf(m, "unknown reason");
 832                 }
 833                 seq_printf(m, "\n");
 834         }
 835         return 0;
 836 }
 837
 838 static int i915_sr_status(struct seq_file *m, void *unused)
 839 {
 840         struct drm_info_node *node = (struct drm_info_node *) m->private;
 841         struct drm_device *dev = node->minor->dev;
 842         drm_i915_private_t *dev_priv = dev->dev_private;
 843         bool sr_enabled = false;
 844
 845         if (IS_GEN5(dev))
 846                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
 847         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
 848                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
 849         else if (IS_I915GM(dev))
 850                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
 851         else if (IS_PINEVIEW(dev))
 852                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
 853
 854         seq_printf(m, "self-refresh: %s\n",
 855                    sr_enabled ? "enabled" : "disabled");
 856
 857         return 0;
 858 }
 859
 860 static int i915_emon_status(struct seq_file *m, void *unused)
 861 {
 862         struct drm_info_node *node = (struct drm_info_node *) m->private;
 863         struct drm_device *dev = node->minor->dev;
 864         drm_i915_private_t *dev_priv = dev->dev_private;
 865         unsigned long temp, chipset, gfx;
 866         int ret;
 867
 868         ret = mutex_lock_interruptible(&dev->struct_mutex);
 869         if (ret)
 870                 return ret;
 871
 872         temp = i915_mch_val(dev_priv);
 873         chipset = i915_chipset_val(dev_priv);
 874         gfx = i915_gfx_val(dev_priv);
 875         mutex_unlock(&dev->struct_mutex);
 876
 877         seq_printf(m, "GMCH temp: %ld\n", temp);
 878         seq_printf(m, "Chipset power: %ld\n", chipset);
 879         seq_printf(m, "GFX power: %ld\n", gfx);
 880         seq_printf(m, "Total power: %ld\n", chipset + gfx);
 881
 882         return 0;
 883 }
 884
 885 static int i915_gfxec(struct seq_file *m, void *unused)
 886 {
 887         struct drm_info_node *node = (struct drm_info_node *) m->private;
 888         struct drm_device *dev = node->minor->dev;
 889         drm_i915_private_t *dev_priv = dev->dev_private;
 890
 891         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
 892
 893         return 0;
 894 }
 895
 896 static int i915_opregion(struct seq_file *m, void *unused)
 897 {
 898         struct drm_info_node *node = (struct drm_info_node *) m->private;
 899         struct drm_device *dev = node->minor->dev;
 900         drm_i915_private_t *dev_priv = dev->dev_private;
 901         struct intel_opregion *opregion = &dev_priv->opregion;
 902         int ret;
 903
 904         ret = mutex_lock_interruptible(&dev->struct_mutex);
 905         if (ret)
 906                 return ret;
 907
 908         if (opregion->header)
 909                 seq_write(m, opregion->header, OPREGION_SIZE);
 910
 911         mutex_unlock(&dev->struct_mutex);
 912
 913         return 0;
 914 }
 915
 916 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
 917 {
 918         struct drm_info_node *node = (struct drm_info_node *) m->private;
 919         struct drm_device *dev = node->minor->dev;
 920         drm_i915_private_t *dev_priv = dev->dev_private;
 921         struct intel_fbdev *ifbdev;
 922         struct intel_framebuffer *fb;
 923         int ret;
 924
 925         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
 926         if (ret)
 927                 return ret;
 928
 929         ifbdev = dev_priv->fbdev;
 930         fb = to_intel_framebuffer(ifbdev->helper.fb);
 931
 932         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
 933                    fb->base.width,
 934                    fb->base.height,
 935                    fb->base.depth,
 936                    fb->base.bits_per_pixel);
 937         describe_obj(m, to_intel_bo(fb->obj));
 938         seq_printf(m, "\n");
 939
 940         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
 941                 if (&fb->base == ifbdev->helper.fb)
 942                         continue;
 943
 944                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
 945                            fb->base.width,
 946                            fb->base.height,
 947                            fb->base.depth,
 948                            fb->base.bits_per_pixel);
 949                 describe_obj(m, to_intel_bo(fb->obj));
 950                 seq_printf(m, "\n");
 951         }
 952
 953         mutex_unlock(&dev->mode_config.mutex);
 954
 955         return 0;
 956 }
 957
 958 static int
 959 i915_wedged_open(struct inode *inode,
 960                  struct file *filp)
 961 {
 962         filp->private_data = inode->i_private;
 963         return 0;
 964 }
 965
 966 static ssize_t
 967 i915_wedged_read(struct file *filp,
 968                  char __user *ubuf,
 969                  size_t max,
 970                  loff_t *ppos)
 971 {
 972         struct drm_device *dev = filp->private_data;
 973         drm_i915_private_t *dev_priv = dev->dev_private;
 974         char buf[80];
 975         int len;
 976
 977         len = snprintf(buf, sizeof (buf),
 978                        "wedged :  %d\n",
 979                        atomic_read(&dev_priv->mm.wedged));
 980
 981         if (len > sizeof (buf))
 982                 len = sizeof (buf);
 983
 984         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
 985 }
 986
 987 static ssize_t
 988 i915_wedged_write(struct file *filp,
 989                   const char __user *ubuf,
 990                   size_t cnt,
 991                   loff_t *ppos)
 992 {
 993         struct drm_device *dev = filp->private_data;
 994         drm_i915_private_t *dev_priv = dev->dev_private;
 995         char buf[20];
 996         int val = 1;
 997
 998         if (cnt > 0) {
 999                 if (cnt > sizeof (buf) - 1)
1000                         return -EINVAL;
1001
1002                 if (copy_from_user(buf, ubuf, cnt))
1003                         return -EFAULT;
1004                 buf[cnt] = 0;
1005
1006                 val = simple_strtoul(buf, NULL, 0);
1007         }
1008
1009         DRM_INFO("Manually setting wedged to %d\n", val);
1010
1011         atomic_set(&dev_priv->mm.wedged, val);
1012         if (val) {
1013                 wake_up_all(&dev_priv->irq_queue);
1014                 queue_work(dev_priv->wq, &dev_priv->error_work);
1015         }
1016
1017         return cnt;
1018 }
1019
1020 static const struct file_operations i915_wedged_fops = {
1021         .owner = THIS_MODULE,
1022         .open = i915_wedged_open,
1023         .read = i915_wedged_read,
1024         .write = i915_wedged_write,
1025         .llseek = default_llseek,
1026 };
1027
1028 /* As the drm_debugfs_init() routines are called before dev->dev_private is
1029  * allocated we need to hook into the minor for release. */
1030 static int
1031 drm_add_fake_info_node(struct drm_minor *minor,
1032                        struct dentry *ent,
1033                        const void *key)
1034 {
1035         struct drm_info_node *node;
1036
1037         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
1038         if (node == NULL) {
1039                 debugfs_remove(ent);
1040                 return -ENOMEM;
1041         }
1042
1043         node->minor = minor;
1044         node->dent = ent;
1045         node->info_ent = (void *) key;
1046         list_add(&node->list, &minor->debugfs_nodes.list);
1047
1048         return 0;
1049 }
1050
1051 static int i915_wedged_create(struct dentry *root, struct drm_minor *minor)
1052 {
1053         struct drm_device *dev = minor->dev;
1054         struct dentry *ent;
1055
1056         ent = debugfs_create_file("i915_wedged",
1057                                   S_IRUGO | S_IWUSR,
1058                                   root, dev,
1059                                   &i915_wedged_fops);
1060         if (IS_ERR(ent))
1061                 return PTR_ERR(ent);
1062
1063         return drm_add_fake_info_node(minor, ent, &i915_wedged_fops);
1064 }
1065
1066 static struct drm_info_list i915_debugfs_list[] = {
1067         {"i915_capabilities", i915_capabilities, 0, 0},
1068         {"i915_gem_objects", i915_gem_object_info, 0},
1069         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
1070         {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
1071         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
1072         {"i915_gem_pinned", i915_gem_object_list_info, 0, (void *) PINNED_LIST},
1073         {"i915_gem_deferred_free", i915_gem_object_list_info, 0, (void *) DEFERRED_FREE_LIST},
1074         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
1075         {"i915_gem_request", i915_gem_request_info, 0},
1076         {"i915_gem_seqno", i915_gem_seqno_info, 0},
1077         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
1078         {"i915_gem_interrupt", i915_interrupt_info, 0},
1079         {"i915_gem_hws", i915_hws_info, 0},
1080         {"i915_ringbuffer_data", i915_ringbuffer_data, 0, (void *)RENDER_RING},
1081         {"i915_ringbuffer_info", i915_ringbuffer_info, 0, (void *)RENDER_RING},
1082         {"i915_bsd_ringbuffer_data", i915_ringbuffer_data, 0, (void *)BSD_RING},
1083         {"i915_bsd_ringbuffer_info", i915_ringbuffer_info, 0, (void *)BSD_RING},
1084         {"i915_blt_ringbuffer_data", i915_ringbuffer_data, 0, (void *)BLT_RING},
1085         {"i915_blt_ringbuffer_info", i915_ringbuffer_info, 0, (void *)BLT_RING},
1086         {"i915_batchbuffers", i915_batchbuffer_info, 0},
1087         {"i915_error_state", i915_error_state, 0},
1088         {"i915_rstdby_delays", i915_rstdby_delays, 0},
1089         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
1090         {"i915_delayfreq_table", i915_delayfreq_table, 0},
1091         {"i915_inttoext_table", i915_inttoext_table, 0},
1092         {"i915_drpc_info", i915_drpc_info, 0},
1093         {"i915_emon_status", i915_emon_status, 0},
1094         {"i915_gfxec", i915_gfxec, 0},
1095         {"i915_fbc_status", i915_fbc_status, 0},
1096         {"i915_sr_status", i915_sr_status, 0},
1097         {"i915_opregion", i915_opregion, 0},
1098         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
1099 };
1100 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
1101
1102 int i915_debugfs_init(struct drm_minor *minor)
1103 {
1104         int ret;
1105
1106         ret = i915_wedged_create(minor->debugfs_root, minor);
1107         if (ret)
1108                 return ret;
1109
1110         return drm_debugfs_create_files(i915_debugfs_list,
1111                                         I915_DEBUGFS_ENTRIES,
1112                                         minor->debugfs_root, minor);
1113 }
1114
1115 void i915_debugfs_cleanup(struct drm_minor *minor)
1116 {
1117         drm_debugfs_remove_files(i915_debugfs_list,
1118                                  I915_DEBUGFS_ENTRIES, minor);
1119         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
1120                                  1, minor);
1121 }
1122
1123 #endif /* CONFIG_DEBUG_FS */