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 <linux/export.h>
  33 #include "drmP.h"
  34 #include "drm.h"
  35 #include "intel_drv.h"
  36 #include "intel_ringbuffer.h"
  37 #include "i915_drm.h"
  38 #include "i915_drv.h"
  39
  40 #define DRM_I915_RING_DEBUG 1
  41
  42
  43 #if defined(CONFIG_DEBUG_FS)
  44
  45 enum {
  46         ACTIVE_LIST,
  47         FLUSHING_LIST,
  48         INACTIVE_LIST,
  49         PINNED_LIST,
  50         DEFERRED_FREE_LIST,
  51 };
  52
  53 static const char *yesno(int v)
  54 {
  55         return v ? "yes" : "no";
  56 }
  57
  58 static int i915_capabilities(struct seq_file *m, void *data)
  59 {
  60         struct drm_info_node *node = (struct drm_info_node *) m->private;
  61         struct drm_device *dev = node->minor->dev;
  62         const struct intel_device_info *info = INTEL_INFO(dev);
  63
  64         seq_printf(m, "gen: %d\n", info->gen);
  65 #define B(x) seq_printf(m, #x ": %s\n", yesno(info->x))
  66         B(is_mobile);
  67         B(is_i85x);
  68         B(is_i915g);
  69         B(is_i945gm);
  70         B(is_g33);
  71         B(need_gfx_hws);
  72         B(is_g4x);
  73         B(is_pineview);
  74         B(is_broadwater);
  75         B(is_crestline);
  76         B(has_fbc);
  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         B(has_bsd_ring);
  84         B(has_blt_ring);
  85 #undef B
  86
  87         return 0;
  88 }
  89
  90 static const char *get_pin_flag(struct drm_i915_gem_object *obj)
  91 {
  92         if (obj->user_pin_count > 0)
  93                 return "P";
  94         else if (obj->pin_count > 0)
  95                 return "p";
  96         else
  97                 return " ";
  98 }
  99
 100 static const char *get_tiling_flag(struct drm_i915_gem_object *obj)
 101 {
 102         switch (obj->tiling_mode) {
 103         default:
 104         case I915_TILING_NONE: return " ";
 105         case I915_TILING_X: return "X";
 106         case I915_TILING_Y: return "Y";
 107         }
 108 }
 109
 110 static const char *cache_level_str(int type)
 111 {
 112         switch (type) {
 113         case I915_CACHE_NONE: return " uncached";
 114         case I915_CACHE_LLC: return " snooped (LLC)";
 115         case I915_CACHE_LLC_MLC: return " snooped (LLC+MLC)";
 116         default: return "";
 117         }
 118 }
 119
 120 static void
 121 describe_obj(struct seq_file *m, struct drm_i915_gem_object *obj)
 122 {
 123         seq_printf(m, "%p: %s%s %8zd %04x %04x %d %d%s%s%s",
 124                    &obj->base,
 125                    get_pin_flag(obj),
 126                    get_tiling_flag(obj),
 127                    obj->base.size,
 128                    obj->base.read_domains,
 129                    obj->base.write_domain,
 130                    obj->last_rendering_seqno,
 131                    obj->last_fenced_seqno,
 132                    cache_level_str(obj->cache_level),
 133                    obj->dirty ? " dirty" : "",
 134                    obj->madv == I915_MADV_DONTNEED ? " purgeable" : "");
 135         if (obj->base.name)
 136                 seq_printf(m, " (name: %d)", obj->base.name);
 137         if (obj->fence_reg != I915_FENCE_REG_NONE)
 138                 seq_printf(m, " (fence: %d)", obj->fence_reg);
 139         if (obj->gtt_space != NULL)
 140                 seq_printf(m, " (gtt offset: %08x, size: %08x)",
 141                            obj->gtt_offset, (unsigned int)obj->gtt_space->size);
 142         if (obj->pin_mappable || obj->fault_mappable) {
 143                 char s[3], *t = s;
 144                 if (obj->pin_mappable)
 145                         *t++ = 'p';
 146                 if (obj->fault_mappable)
 147                         *t++ = 'f';
 148                 *t = '\0';
 149                 seq_printf(m, " (%s mappable)", s);
 150         }
 151         if (obj->ring != NULL)
 152                 seq_printf(m, " (%s)", obj->ring->name);
 153 }
 154
 155 static int i915_gem_object_list_info(struct seq_file *m, void *data)
 156 {
 157         struct drm_info_node *node = (struct drm_info_node *) m->private;
 158         uintptr_t list = (uintptr_t) node->info_ent->data;
 159         struct list_head *head;
 160         struct drm_device *dev = node->minor->dev;
 161         drm_i915_private_t *dev_priv = dev->dev_private;
 162         struct drm_i915_gem_object *obj;
 163         size_t total_obj_size, total_gtt_size;
 164         int count, ret;
 165
 166         ret = mutex_lock_interruptible(&dev->struct_mutex);
 167         if (ret)
 168                 return ret;
 169
 170         switch (list) {
 171         case ACTIVE_LIST:
 172                 seq_printf(m, "Active:\n");
 173                 head = &dev_priv->mm.active_list;
 174                 break;
 175         case INACTIVE_LIST:
 176                 seq_printf(m, "Inactive:\n");
 177                 head = &dev_priv->mm.inactive_list;
 178                 break;
 179         case PINNED_LIST:
 180                 seq_printf(m, "Pinned:\n");
 181                 head = &dev_priv->mm.pinned_list;
 182                 break;
 183         case FLUSHING_LIST:
 184                 seq_printf(m, "Flushing:\n");
 185                 head = &dev_priv->mm.flushing_list;
 186                 break;
 187         case DEFERRED_FREE_LIST:
 188                 seq_printf(m, "Deferred free:\n");
 189                 head = &dev_priv->mm.deferred_free_list;
 190                 break;
 191         default:
 192                 mutex_unlock(&dev->struct_mutex);
 193                 return -EINVAL;
 194         }
 195
 196         total_obj_size = total_gtt_size = count = 0;
 197         list_for_each_entry(obj, head, mm_list) {
 198                 seq_printf(m, "   ");
 199                 describe_obj(m, obj);
 200                 seq_printf(m, "\n");
 201                 total_obj_size += obj->base.size;
 202                 total_gtt_size += obj->gtt_space->size;
 203                 count++;
 204         }
 205         mutex_unlock(&dev->struct_mutex);
 206
 207         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 208                    count, total_obj_size, total_gtt_size);
 209         return 0;
 210 }
 211
 212 #define count_objects(list, member) do { \
 213         list_for_each_entry(obj, list, member) { \
 214                 size += obj->gtt_space->size; \
 215                 ++count; \
 216                 if (obj->map_and_fenceable) { \
 217                         mappable_size += obj->gtt_space->size; \
 218                         ++mappable_count; \
 219                 } \
 220         } \
 221 } while (0)
 222
 223 static int i915_gem_object_info(struct seq_file *m, void* data)
 224 {
 225         struct drm_info_node *node = (struct drm_info_node *) m->private;
 226         struct drm_device *dev = node->minor->dev;
 227         struct drm_i915_private *dev_priv = dev->dev_private;
 228         u32 count, mappable_count;
 229         size_t size, mappable_size;
 230         struct drm_i915_gem_object *obj;
 231         int ret;
 232
 233         ret = mutex_lock_interruptible(&dev->struct_mutex);
 234         if (ret)
 235                 return ret;
 236
 237         seq_printf(m, "%u objects, %zu bytes\n",
 238                    dev_priv->mm.object_count,
 239                    dev_priv->mm.object_memory);
 240
 241         size = count = mappable_size = mappable_count = 0;
 242         count_objects(&dev_priv->mm.gtt_list, gtt_list);
 243         seq_printf(m, "%u [%u] objects, %zu [%zu] bytes in gtt\n",
 244                    count, mappable_count, size, mappable_size);
 245
 246         size = count = mappable_size = mappable_count = 0;
 247         count_objects(&dev_priv->mm.active_list, mm_list);
 248         count_objects(&dev_priv->mm.flushing_list, mm_list);
 249         seq_printf(m, "  %u [%u] active objects, %zu [%zu] bytes\n",
 250                    count, mappable_count, size, mappable_size);
 251
 252         size = count = mappable_size = mappable_count = 0;
 253         count_objects(&dev_priv->mm.pinned_list, mm_list);
 254         seq_printf(m, "  %u [%u] pinned objects, %zu [%zu] bytes\n",
 255                    count, mappable_count, size, mappable_size);
 256
 257         size = count = mappable_size = mappable_count = 0;
 258         count_objects(&dev_priv->mm.inactive_list, mm_list);
 259         seq_printf(m, "  %u [%u] inactive objects, %zu [%zu] bytes\n",
 260                    count, mappable_count, size, mappable_size);
 261
 262         size = count = mappable_size = mappable_count = 0;
 263         count_objects(&dev_priv->mm.deferred_free_list, mm_list);
 264         seq_printf(m, "  %u [%u] freed objects, %zu [%zu] bytes\n",
 265                    count, mappable_count, size, mappable_size);
 266
 267         size = count = mappable_size = mappable_count = 0;
 268         list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
 269                 if (obj->fault_mappable) {
 270                         size += obj->gtt_space->size;
 271                         ++count;
 272                 }
 273                 if (obj->pin_mappable) {
 274                         mappable_size += obj->gtt_space->size;
 275                         ++mappable_count;
 276                 }
 277         }
 278         seq_printf(m, "%u pinned mappable objects, %zu bytes\n",
 279                    mappable_count, mappable_size);
 280         seq_printf(m, "%u fault mappable objects, %zu bytes\n",
 281                    count, size);
 282
 283         seq_printf(m, "%zu [%zu] gtt total\n",
 284                    dev_priv->mm.gtt_total, dev_priv->mm.mappable_gtt_total);
 285
 286         mutex_unlock(&dev->struct_mutex);
 287
 288         return 0;
 289 }
 290
 291 static int i915_gem_gtt_info(struct seq_file *m, void* data)
 292 {
 293         struct drm_info_node *node = (struct drm_info_node *) m->private;
 294         struct drm_device *dev = node->minor->dev;
 295         struct drm_i915_private *dev_priv = dev->dev_private;
 296         struct drm_i915_gem_object *obj;
 297         size_t total_obj_size, total_gtt_size;
 298         int count, ret;
 299
 300         ret = mutex_lock_interruptible(&dev->struct_mutex);
 301         if (ret)
 302                 return ret;
 303
 304         total_obj_size = total_gtt_size = count = 0;
 305         list_for_each_entry(obj, &dev_priv->mm.gtt_list, gtt_list) {
 306                 seq_printf(m, "   ");
 307                 describe_obj(m, obj);
 308                 seq_printf(m, "\n");
 309                 total_obj_size += obj->base.size;
 310                 total_gtt_size += obj->gtt_space->size;
 311                 count++;
 312         }
 313
 314         mutex_unlock(&dev->struct_mutex);
 315
 316         seq_printf(m, "Total %d objects, %zu bytes, %zu GTT size\n",
 317                    count, total_obj_size, total_gtt_size);
 318
 319         return 0;
 320 }
 321
 322
 323 static int i915_gem_pageflip_info(struct seq_file *m, void *data)
 324 {
 325         struct drm_info_node *node = (struct drm_info_node *) m->private;
 326         struct drm_device *dev = node->minor->dev;
 327         unsigned long flags;
 328         struct intel_crtc *crtc;
 329
 330         list_for_each_entry(crtc, &dev->mode_config.crtc_list, base.head) {
 331                 const char pipe = pipe_name(crtc->pipe);
 332                 const char plane = plane_name(crtc->plane);
 333                 struct intel_unpin_work *work;
 334
 335                 spin_lock_irqsave(&dev->event_lock, flags);
 336                 work = crtc->unpin_work;
 337                 if (work == NULL) {
 338                         seq_printf(m, "No flip due on pipe %c (plane %c)\n",
 339                                    pipe, plane);
 340                 } else {
 341                         if (!work->pending) {
 342                                 seq_printf(m, "Flip queued on pipe %c (plane %c)\n",
 343                                            pipe, plane);
 344                         } else {
 345                                 seq_printf(m, "Flip pending (waiting for vsync) on pipe %c (plane %c)\n",
 346                                            pipe, plane);
 347                         }
 348                         if (work->enable_stall_check)
 349                                 seq_printf(m, "Stall check enabled, ");
 350                         else
 351                                 seq_printf(m, "Stall check waiting for page flip ioctl, ");
 352                         seq_printf(m, "%d prepares\n", work->pending);
 353
 354                         if (work->old_fb_obj) {
 355                                 struct drm_i915_gem_object *obj = work->old_fb_obj;
 356                                 if (obj)
 357                                         seq_printf(m, "Old framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 358                         }
 359                         if (work->pending_flip_obj) {
 360                                 struct drm_i915_gem_object *obj = work->pending_flip_obj;
 361                                 if (obj)
 362                                         seq_printf(m, "New framebuffer gtt_offset 0x%08x\n", obj->gtt_offset);
 363                         }
 364                 }
 365                 spin_unlock_irqrestore(&dev->event_lock, flags);
 366         }
 367
 368         return 0;
 369 }
 370
 371 static int i915_gem_request_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         struct drm_i915_gem_request *gem_request;
 377         int ret, count;
 378
 379         ret = mutex_lock_interruptible(&dev->struct_mutex);
 380         if (ret)
 381                 return ret;
 382
 383         count = 0;
 384         if (!list_empty(&dev_priv->ring[RCS].request_list)) {
 385                 seq_printf(m, "Render requests:\n");
 386                 list_for_each_entry(gem_request,
 387                                     &dev_priv->ring[RCS].request_list,
 388                                     list) {
 389                         seq_printf(m, "    %d @ %d\n",
 390                                    gem_request->seqno,
 391                                    (int) (jiffies - gem_request->emitted_jiffies));
 392                 }
 393                 count++;
 394         }
 395         if (!list_empty(&dev_priv->ring[VCS].request_list)) {
 396                 seq_printf(m, "BSD requests:\n");
 397                 list_for_each_entry(gem_request,
 398                                     &dev_priv->ring[VCS].request_list,
 399                                     list) {
 400                         seq_printf(m, "    %d @ %d\n",
 401                                    gem_request->seqno,
 402                                    (int) (jiffies - gem_request->emitted_jiffies));
 403                 }
 404                 count++;
 405         }
 406         if (!list_empty(&dev_priv->ring[BCS].request_list)) {
 407                 seq_printf(m, "BLT requests:\n");
 408                 list_for_each_entry(gem_request,
 409                                     &dev_priv->ring[BCS].request_list,
 410                                     list) {
 411                         seq_printf(m, "    %d @ %d\n",
 412                                    gem_request->seqno,
 413                                    (int) (jiffies - gem_request->emitted_jiffies));
 414                 }
 415                 count++;
 416         }
 417         mutex_unlock(&dev->struct_mutex);
 418
 419         if (count == 0)
 420                 seq_printf(m, "No requests\n");
 421
 422         return 0;
 423 }
 424
 425 static void i915_ring_seqno_info(struct seq_file *m,
 426                                  struct intel_ring_buffer *ring)
 427 {
 428         if (ring->get_seqno) {
 429                 seq_printf(m, "Current sequence (%s): %d\n",
 430                            ring->name, ring->get_seqno(ring));
 431                 seq_printf(m, "Waiter sequence (%s):  %d\n",
 432                            ring->name, ring->waiting_seqno);
 433                 seq_printf(m, "IRQ sequence (%s):     %d\n",
 434                            ring->name, ring->irq_seqno);
 435         }
 436 }
 437
 438 static int i915_gem_seqno_info(struct seq_file *m, void *data)
 439 {
 440         struct drm_info_node *node = (struct drm_info_node *) m->private;
 441         struct drm_device *dev = node->minor->dev;
 442         drm_i915_private_t *dev_priv = dev->dev_private;
 443         int ret, i;
 444
 445         ret = mutex_lock_interruptible(&dev->struct_mutex);
 446         if (ret)
 447                 return ret;
 448
 449         for (i = 0; i < I915_NUM_RINGS; i++)
 450                 i915_ring_seqno_info(m, &dev_priv->ring[i]);
 451
 452         mutex_unlock(&dev->struct_mutex);
 453
 454         return 0;
 455 }
 456
 457
 458 static int i915_interrupt_info(struct seq_file *m, void *data)
 459 {
 460         struct drm_info_node *node = (struct drm_info_node *) m->private;
 461         struct drm_device *dev = node->minor->dev;
 462         drm_i915_private_t *dev_priv = dev->dev_private;
 463         int ret, i, pipe;
 464
 465         ret = mutex_lock_interruptible(&dev->struct_mutex);
 466         if (ret)
 467                 return ret;
 468
 469         if (!HAS_PCH_SPLIT(dev)) {
 470                 seq_printf(m, "Interrupt enable:    %08x\n",
 471                            I915_READ(IER));
 472                 seq_printf(m, "Interrupt identity:  %08x\n",
 473                            I915_READ(IIR));
 474                 seq_printf(m, "Interrupt mask:      %08x\n",
 475                            I915_READ(IMR));
 476                 for_each_pipe(pipe)
 477                         seq_printf(m, "Pipe %c stat:         %08x\n",
 478                                    pipe_name(pipe),
 479                                    I915_READ(PIPESTAT(pipe)));
 480         } else {
 481                 seq_printf(m, "North Display Interrupt enable:          %08x\n",
 482                            I915_READ(DEIER));
 483                 seq_printf(m, "North Display Interrupt identity:        %08x\n",
 484                            I915_READ(DEIIR));
 485                 seq_printf(m, "North Display Interrupt mask:            %08x\n",
 486                            I915_READ(DEIMR));
 487                 seq_printf(m, "South Display Interrupt enable:          %08x\n",
 488                            I915_READ(SDEIER));
 489                 seq_printf(m, "South Display Interrupt identity:        %08x\n",
 490                            I915_READ(SDEIIR));
 491                 seq_printf(m, "South Display Interrupt mask:            %08x\n",
 492                            I915_READ(SDEIMR));
 493                 seq_printf(m, "Graphics Interrupt enable:               %08x\n",
 494                            I915_READ(GTIER));
 495                 seq_printf(m, "Graphics Interrupt identity:             %08x\n",
 496                            I915_READ(GTIIR));
 497                 seq_printf(m, "Graphics Interrupt mask:         %08x\n",
 498                            I915_READ(GTIMR));
 499         }
 500         seq_printf(m, "Interrupts received: %d\n",
 501                    atomic_read(&dev_priv->irq_received));
 502         for (i = 0; i < I915_NUM_RINGS; i++) {
 503                 if (IS_GEN6(dev) || IS_GEN7(dev)) {
 504                         seq_printf(m, "Graphics Interrupt mask (%s):    %08x\n",
 505                                    dev_priv->ring[i].name,
 506                                    I915_READ_IMR(&dev_priv->ring[i]));
 507                 }
 508                 i915_ring_seqno_info(m, &dev_priv->ring[i]);
 509         }
 510         mutex_unlock(&dev->struct_mutex);
 511
 512         return 0;
 513 }
 514
 515 static int i915_gem_fence_regs_info(struct seq_file *m, void *data)
 516 {
 517         struct drm_info_node *node = (struct drm_info_node *) m->private;
 518         struct drm_device *dev = node->minor->dev;
 519         drm_i915_private_t *dev_priv = dev->dev_private;
 520         int i, ret;
 521
 522         ret = mutex_lock_interruptible(&dev->struct_mutex);
 523         if (ret)
 524                 return ret;
 525
 526         seq_printf(m, "Reserved fences = %d\n", dev_priv->fence_reg_start);
 527         seq_printf(m, "Total fences = %d\n", dev_priv->num_fence_regs);
 528         for (i = 0; i < dev_priv->num_fence_regs; i++) {
 529                 struct drm_i915_gem_object *obj = dev_priv->fence_regs[i].obj;
 530
 531                 seq_printf(m, "Fenced object[%2d] = ", i);
 532                 if (obj == NULL)
 533                         seq_printf(m, "unused");
 534                 else
 535                         describe_obj(m, obj);
 536                 seq_printf(m, "\n");
 537         }
 538
 539         mutex_unlock(&dev->struct_mutex);
 540         return 0;
 541 }
 542
 543 static int i915_hws_info(struct seq_file *m, void *data)
 544 {
 545         struct drm_info_node *node = (struct drm_info_node *) m->private;
 546         struct drm_device *dev = node->minor->dev;
 547         drm_i915_private_t *dev_priv = dev->dev_private;
 548         struct intel_ring_buffer *ring;
 549         const volatile u32 __iomem *hws;
 550         int i;
 551
 552         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 553         hws = (volatile u32 __iomem *)ring->status_page.page_addr;
 554         if (hws == NULL)
 555                 return 0;
 556
 557         for (i = 0; i < 4096 / sizeof(u32) / 4; i += 4) {
 558                 seq_printf(m, "0x%08x: 0x%08x 0x%08x 0x%08x 0x%08x\n",
 559                            i * 4,
 560                            hws[i], hws[i + 1], hws[i + 2], hws[i + 3]);
 561         }
 562         return 0;
 563 }
 564
 565 static void i915_dump_object(struct seq_file *m,
 566                              struct io_mapping *mapping,
 567                              struct drm_i915_gem_object *obj)
 568 {
 569         int page, page_count, i;
 570
 571         page_count = obj->base.size / PAGE_SIZE;
 572         for (page = 0; page < page_count; page++) {
 573                 u32 *mem = io_mapping_map_wc(mapping,
 574                                              obj->gtt_offset + page * PAGE_SIZE);
 575                 for (i = 0; i < PAGE_SIZE; i += 4)
 576                         seq_printf(m, "%08x :  %08x\n", i, mem[i / 4]);
 577                 io_mapping_unmap(mem);
 578         }
 579 }
 580
 581 static int i915_batchbuffer_info(struct seq_file *m, void *data)
 582 {
 583         struct drm_info_node *node = (struct drm_info_node *) m->private;
 584         struct drm_device *dev = node->minor->dev;
 585         drm_i915_private_t *dev_priv = dev->dev_private;
 586         struct drm_i915_gem_object *obj;
 587         int ret;
 588
 589         ret = mutex_lock_interruptible(&dev->struct_mutex);
 590         if (ret)
 591                 return ret;
 592
 593         list_for_each_entry(obj, &dev_priv->mm.active_list, mm_list) {
 594                 if (obj->base.read_domains & I915_GEM_DOMAIN_COMMAND) {
 595                     seq_printf(m, "--- gtt_offset = 0x%08x\n", obj->gtt_offset);
 596                     i915_dump_object(m, dev_priv->mm.gtt_mapping, obj);
 597                 }
 598         }
 599
 600         mutex_unlock(&dev->struct_mutex);
 601         return 0;
 602 }
 603
 604 static int i915_ringbuffer_data(struct seq_file *m, void *data)
 605 {
 606         struct drm_info_node *node = (struct drm_info_node *) m->private;
 607         struct drm_device *dev = node->minor->dev;
 608         drm_i915_private_t *dev_priv = dev->dev_private;
 609         struct intel_ring_buffer *ring;
 610         int ret;
 611
 612         ret = mutex_lock_interruptible(&dev->struct_mutex);
 613         if (ret)
 614                 return ret;
 615
 616         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 617         if (!ring->obj) {
 618                 seq_printf(m, "No ringbuffer setup\n");
 619         } else {
 620                 const u8 __iomem *virt = ring->virtual_start;
 621                 uint32_t off;
 622
 623                 for (off = 0; off < ring->size; off += 4) {
 624                         uint32_t *ptr = (uint32_t *)(virt + off);
 625                         seq_printf(m, "%08x :  %08x\n", off, *ptr);
 626                 }
 627         }
 628         mutex_unlock(&dev->struct_mutex);
 629
 630         return 0;
 631 }
 632
 633 static int i915_ringbuffer_info(struct seq_file *m, void *data)
 634 {
 635         struct drm_info_node *node = (struct drm_info_node *) m->private;
 636         struct drm_device *dev = node->minor->dev;
 637         drm_i915_private_t *dev_priv = dev->dev_private;
 638         struct intel_ring_buffer *ring;
 639         int ret;
 640
 641         ring = &dev_priv->ring[(uintptr_t)node->info_ent->data];
 642         if (ring->size == 0)
 643                 return 0;
 644
 645         ret = mutex_lock_interruptible(&dev->struct_mutex);
 646         if (ret)
 647                 return ret;
 648
 649         seq_printf(m, "Ring %s:\n", ring->name);
 650         seq_printf(m, "  Head :    %08x\n", I915_READ_HEAD(ring) & HEAD_ADDR);
 651         seq_printf(m, "  Tail :    %08x\n", I915_READ_TAIL(ring) & TAIL_ADDR);
 652         seq_printf(m, "  Size :    %08x\n", ring->size);
 653         seq_printf(m, "  Active :  %08x\n", intel_ring_get_active_head(ring));
 654         seq_printf(m, "  NOPID :   %08x\n", I915_READ_NOPID(ring));
 655         if (IS_GEN6(dev)) {
 656                 seq_printf(m, "  Sync 0 :   %08x\n", I915_READ_SYNC_0(ring));
 657                 seq_printf(m, "  Sync 1 :   %08x\n", I915_READ_SYNC_1(ring));
 658         }
 659         seq_printf(m, "  Control : %08x\n", I915_READ_CTL(ring));
 660         seq_printf(m, "  Start :   %08x\n", I915_READ_START(ring));
 661
 662         mutex_unlock(&dev->struct_mutex);
 663
 664         return 0;
 665 }
 666
 667 static const char *ring_str(int ring)
 668 {
 669         switch (ring) {
 670         case RING_RENDER: return " render";
 671         case RING_BSD: return " bsd";
 672         case RING_BLT: return " blt";
 673         default: return "";
 674         }
 675 }
 676
 677 static const char *pin_flag(int pinned)
 678 {
 679         if (pinned > 0)
 680                 return " P";
 681         else if (pinned < 0)
 682                 return " p";
 683         else
 684                 return "";
 685 }
 686
 687 static const char *tiling_flag(int tiling)
 688 {
 689         switch (tiling) {
 690         default:
 691         case I915_TILING_NONE: return "";
 692         case I915_TILING_X: return " X";
 693         case I915_TILING_Y: return " Y";
 694         }
 695 }
 696
 697 static const char *dirty_flag(int dirty)
 698 {
 699         return dirty ? " dirty" : "";
 700 }
 701
 702 static const char *purgeable_flag(int purgeable)
 703 {
 704         return purgeable ? " purgeable" : "";
 705 }
 706
 707 static void print_error_buffers(struct seq_file *m,
 708                                 const char *name,
 709                                 struct drm_i915_error_buffer *err,
 710                                 int count)
 711 {
 712         seq_printf(m, "%s [%d]:\n", name, count);
 713
 714         while (count--) {
 715                 seq_printf(m, "  %08x %8u %04x %04x %08x%s%s%s%s%s%s",
 716                            err->gtt_offset,
 717                            err->size,
 718                            err->read_domains,
 719                            err->write_domain,
 720                            err->seqno,
 721                            pin_flag(err->pinned),
 722                            tiling_flag(err->tiling),
 723                            dirty_flag(err->dirty),
 724                            purgeable_flag(err->purgeable),
 725                            ring_str(err->ring),
 726                            cache_level_str(err->cache_level));
 727
 728                 if (err->name)
 729                         seq_printf(m, " (name: %d)", err->name);
 730                 if (err->fence_reg != I915_FENCE_REG_NONE)
 731                         seq_printf(m, " (fence: %d)", err->fence_reg);
 732
 733                 seq_printf(m, "\n");
 734                 err++;
 735         }
 736 }
 737
 738 static int i915_error_state(struct seq_file *m, void *unused)
 739 {
 740         struct drm_info_node *node = (struct drm_info_node *) m->private;
 741         struct drm_device *dev = node->minor->dev;
 742         drm_i915_private_t *dev_priv = dev->dev_private;
 743         struct drm_i915_error_state *error;
 744         unsigned long flags;
 745         int i, page, offset, elt;
 746
 747         spin_lock_irqsave(&dev_priv->error_lock, flags);
 748         if (!dev_priv->first_error) {
 749                 seq_printf(m, "no error state collected\n");
 750                 goto out;
 751         }
 752
 753         error = dev_priv->first_error;
 754
 755         seq_printf(m, "Time: %ld s %ld us\n", error->time.tv_sec,
 756                    error->time.tv_usec);
 757         seq_printf(m, "PCI ID: 0x%04x\n", dev->pci_device);
 758         seq_printf(m, "EIR: 0x%08x\n", error->eir);
 759         seq_printf(m, "PGTBL_ER: 0x%08x\n", error->pgtbl_er);
 760         if (INTEL_INFO(dev)->gen >= 6) {
 761                 seq_printf(m, "ERROR: 0x%08x\n", error->error);
 762                 seq_printf(m, "Blitter command stream:\n");
 763                 seq_printf(m, "  ACTHD:    0x%08x\n", error->bcs_acthd);
 764                 seq_printf(m, "  IPEIR:    0x%08x\n", error->bcs_ipeir);
 765                 seq_printf(m, "  IPEHR:    0x%08x\n", error->bcs_ipehr);
 766                 seq_printf(m, "  INSTDONE: 0x%08x\n", error->bcs_instdone);
 767                 seq_printf(m, "  seqno:    0x%08x\n", error->bcs_seqno);
 768                 seq_printf(m, "Video (BSD) command stream:\n");
 769                 seq_printf(m, "  ACTHD:    0x%08x\n", error->vcs_acthd);
 770                 seq_printf(m, "  IPEIR:    0x%08x\n", error->vcs_ipeir);
 771                 seq_printf(m, "  IPEHR:    0x%08x\n", error->vcs_ipehr);
 772                 seq_printf(m, "  INSTDONE: 0x%08x\n", error->vcs_instdone);
 773                 seq_printf(m, "  seqno:    0x%08x\n", error->vcs_seqno);
 774         }
 775         seq_printf(m, "Render command stream:\n");
 776         seq_printf(m, "  ACTHD: 0x%08x\n", error->acthd);
 777         seq_printf(m, "  IPEIR: 0x%08x\n", error->ipeir);
 778         seq_printf(m, "  IPEHR: 0x%08x\n", error->ipehr);
 779         seq_printf(m, "  INSTDONE: 0x%08x\n", error->instdone);
 780         if (INTEL_INFO(dev)->gen >= 4) {
 781                 seq_printf(m, "  INSTDONE1: 0x%08x\n", error->instdone1);
 782                 seq_printf(m, "  INSTPS: 0x%08x\n", error->instps);
 783         }
 784         seq_printf(m, "  INSTPM: 0x%08x\n", error->instpm);
 785         seq_printf(m, "  seqno: 0x%08x\n", error->seqno);
 786
 787         for (i = 0; i < dev_priv->num_fence_regs; i++)
 788                 seq_printf(m, "  fence[%d] = %08llx\n", i, error->fence[i]);
 789
 790         if (error->active_bo)
 791                 print_error_buffers(m, "Active",
 792                                     error->active_bo,
 793                                     error->active_bo_count);
 794
 795         if (error->pinned_bo)
 796                 print_error_buffers(m, "Pinned",
 797                                     error->pinned_bo,
 798                                     error->pinned_bo_count);
 799
 800         for (i = 0; i < ARRAY_SIZE(error->batchbuffer); i++) {
 801                 if (error->batchbuffer[i]) {
 802                         struct drm_i915_error_object *obj = error->batchbuffer[i];
 803
 804                         seq_printf(m, "%s --- gtt_offset = 0x%08x\n",
 805                                    dev_priv->ring[i].name,
 806                                    obj->gtt_offset);
 807                         offset = 0;
 808                         for (page = 0; page < obj->page_count; page++) {
 809                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 810                                         seq_printf(m, "%08x :  %08x\n", offset, obj->pages[page][elt]);
 811                                         offset += 4;
 812                                 }
 813                         }
 814                 }
 815         }
 816
 817         for (i = 0; i < ARRAY_SIZE(error->ringbuffer); i++) {
 818                 if (error->ringbuffer[i]) {
 819                         struct drm_i915_error_object *obj = error->ringbuffer[i];
 820                         seq_printf(m, "%s --- ringbuffer = 0x%08x\n",
 821                                    dev_priv->ring[i].name,
 822                                    obj->gtt_offset);
 823                         offset = 0;
 824                         for (page = 0; page < obj->page_count; page++) {
 825                                 for (elt = 0; elt < PAGE_SIZE/4; elt++) {
 826                                         seq_printf(m, "%08x :  %08x\n",
 827                                                    offset,
 828                                                    obj->pages[page][elt]);
 829                                         offset += 4;
 830                                 }
 831                         }
 832                 }
 833         }
 834
 835         if (error->overlay)
 836                 intel_overlay_print_error_state(m, error->overlay);
 837
 838         if (error->display)
 839                 intel_display_print_error_state(m, dev, error->display);
 840
 841 out:
 842         spin_unlock_irqrestore(&dev_priv->error_lock, flags);
 843
 844         return 0;
 845 }
 846
 847 static int i915_rstdby_delays(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         u16 crstanddelay;
 853         int ret;
 854
 855         ret = mutex_lock_interruptible(&dev->struct_mutex);
 856         if (ret)
 857                 return ret;
 858
 859         crstanddelay = I915_READ16(CRSTANDVID);
 860
 861         mutex_unlock(&dev->struct_mutex);
 862
 863         seq_printf(m, "w/ctx: %d, w/o ctx: %d\n", (crstanddelay >> 8) & 0x3f, (crstanddelay & 0x3f));
 864
 865         return 0;
 866 }
 867
 868 static int i915_cur_delayinfo(struct seq_file *m, void *unused)
 869 {
 870         struct drm_info_node *node = (struct drm_info_node *) m->private;
 871         struct drm_device *dev = node->minor->dev;
 872         drm_i915_private_t *dev_priv = dev->dev_private;
 873         int ret;
 874
 875         if (IS_GEN5(dev)) {
 876                 u16 rgvswctl = I915_READ16(MEMSWCTL);
 877                 u16 rgvstat = I915_READ16(MEMSTAT_ILK);
 878
 879                 seq_printf(m, "Requested P-state: %d\n", (rgvswctl >> 8) & 0xf);
 880                 seq_printf(m, "Requested VID: %d\n", rgvswctl & 0x3f);
 881                 seq_printf(m, "Current VID: %d\n", (rgvstat & MEMSTAT_VID_MASK) >>
 882                            MEMSTAT_VID_SHIFT);
 883                 seq_printf(m, "Current P-state: %d\n",
 884                            (rgvstat & MEMSTAT_PSTATE_MASK) >> MEMSTAT_PSTATE_SHIFT);
 885         } else if (IS_GEN6(dev) || IS_GEN7(dev)) {
 886                 u32 gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS);
 887                 u32 rp_state_limits = I915_READ(GEN6_RP_STATE_LIMITS);
 888                 u32 rp_state_cap = I915_READ(GEN6_RP_STATE_CAP);
 889                 u32 rpstat;
 890                 u32 rpupei, rpcurup, rpprevup;
 891                 u32 rpdownei, rpcurdown, rpprevdown;
 892                 int max_freq;
 893
 894                 /* RPSTAT1 is in the GT power well */
 895                 ret = mutex_lock_interruptible(&dev->struct_mutex);
 896                 if (ret)
 897                         return ret;
 898
 899                 gen6_gt_force_wake_get(dev_priv);
 900
 901                 rpstat = I915_READ(GEN6_RPSTAT1);
 902                 rpupei = I915_READ(GEN6_RP_CUR_UP_EI);
 903                 rpcurup = I915_READ(GEN6_RP_CUR_UP);
 904                 rpprevup = I915_READ(GEN6_RP_PREV_UP);
 905                 rpdownei = I915_READ(GEN6_RP_CUR_DOWN_EI);
 906                 rpcurdown = I915_READ(GEN6_RP_CUR_DOWN);
 907                 rpprevdown = I915_READ(GEN6_RP_PREV_DOWN);
 908
 909                 gen6_gt_force_wake_put(dev_priv);
 910                 mutex_unlock(&dev->struct_mutex);
 911
 912                 seq_printf(m, "GT_PERF_STATUS: 0x%08x\n", gt_perf_status);
 913                 seq_printf(m, "RPSTAT1: 0x%08x\n", rpstat);
 914                 seq_printf(m, "Render p-state ratio: %d\n",
 915                            (gt_perf_status & 0xff00) >> 8);
 916                 seq_printf(m, "Render p-state VID: %d\n",
 917                            gt_perf_status & 0xff);
 918                 seq_printf(m, "Render p-state limit: %d\n",
 919                            rp_state_limits & 0xff);
 920                 seq_printf(m, "CAGF: %dMHz\n", ((rpstat & GEN6_CAGF_MASK) >>
 921                                                 GEN6_CAGF_SHIFT) * 50);
 922                 seq_printf(m, "RP CUR UP EI: %dus\n", rpupei &
 923                            GEN6_CURICONT_MASK);
 924                 seq_printf(m, "RP CUR UP: %dus\n", rpcurup &
 925                            GEN6_CURBSYTAVG_MASK);
 926                 seq_printf(m, "RP PREV UP: %dus\n", rpprevup &
 927                            GEN6_CURBSYTAVG_MASK);
 928                 seq_printf(m, "RP CUR DOWN EI: %dus\n", rpdownei &
 929                            GEN6_CURIAVG_MASK);
 930                 seq_printf(m, "RP CUR DOWN: %dus\n", rpcurdown &
 931                            GEN6_CURBSYTAVG_MASK);
 932                 seq_printf(m, "RP PREV DOWN: %dus\n", rpprevdown &
 933                            GEN6_CURBSYTAVG_MASK);
 934
 935                 max_freq = (rp_state_cap & 0xff0000) >> 16;
 936                 seq_printf(m, "Lowest (RPN) frequency: %dMHz\n",
 937                            max_freq * 50);
 938
 939                 max_freq = (rp_state_cap & 0xff00) >> 8;
 940                 seq_printf(m, "Nominal (RP1) frequency: %dMHz\n",
 941                            max_freq * 50);
 942
 943                 max_freq = rp_state_cap & 0xff;
 944                 seq_printf(m, "Max non-overclocked (RP0) frequency: %dMHz\n",
 945                            max_freq * 50);
 946         } else {
 947                 seq_printf(m, "no P-state info available\n");
 948         }
 949
 950         return 0;
 951 }
 952
 953 static int i915_delayfreq_table(struct seq_file *m, void *unused)
 954 {
 955         struct drm_info_node *node = (struct drm_info_node *) m->private;
 956         struct drm_device *dev = node->minor->dev;
 957         drm_i915_private_t *dev_priv = dev->dev_private;
 958         u32 delayfreq;
 959         int ret, i;
 960
 961         ret = mutex_lock_interruptible(&dev->struct_mutex);
 962         if (ret)
 963                 return ret;
 964
 965         for (i = 0; i < 16; i++) {
 966                 delayfreq = I915_READ(PXVFREQ_BASE + i * 4);
 967                 seq_printf(m, "P%02dVIDFREQ: 0x%08x (VID: %d)\n", i, delayfreq,
 968                            (delayfreq & PXVFREQ_PX_MASK) >> PXVFREQ_PX_SHIFT);
 969         }
 970
 971         mutex_unlock(&dev->struct_mutex);
 972
 973         return 0;
 974 }
 975
 976 static inline int MAP_TO_MV(int map)
 977 {
 978         return 1250 - (map * 25);
 979 }
 980
 981 static int i915_inttoext_table(struct seq_file *m, void *unused)
 982 {
 983         struct drm_info_node *node = (struct drm_info_node *) m->private;
 984         struct drm_device *dev = node->minor->dev;
 985         drm_i915_private_t *dev_priv = dev->dev_private;
 986         u32 inttoext;
 987         int ret, i;
 988
 989         ret = mutex_lock_interruptible(&dev->struct_mutex);
 990         if (ret)
 991                 return ret;
 992
 993         for (i = 1; i <= 32; i++) {
 994                 inttoext = I915_READ(INTTOEXT_BASE_ILK + i * 4);
 995                 seq_printf(m, "INTTOEXT%02d: 0x%08x\n", i, inttoext);
 996         }
 997
 998         mutex_unlock(&dev->struct_mutex);
 999
1000         return 0;
1001 }
1002
1003 static int i915_drpc_info(struct seq_file *m, void *unused)
1004 {
1005         struct drm_info_node *node = (struct drm_info_node *) m->private;
1006         struct drm_device *dev = node->minor->dev;
1007         drm_i915_private_t *dev_priv = dev->dev_private;
1008         u32 rgvmodectl, rstdbyctl;
1009         u16 crstandvid;
1010         int ret;
1011
1012         ret = mutex_lock_interruptible(&dev->struct_mutex);
1013         if (ret)
1014                 return ret;
1015
1016         rgvmodectl = I915_READ(MEMMODECTL);
1017         rstdbyctl = I915_READ(RSTDBYCTL);
1018         crstandvid = I915_READ16(CRSTANDVID);
1019
1020         mutex_unlock(&dev->struct_mutex);
1021
1022         seq_printf(m, "HD boost: %s\n", (rgvmodectl & MEMMODE_BOOST_EN) ?
1023                    "yes" : "no");
1024         seq_printf(m, "Boost freq: %d\n",
1025                    (rgvmodectl & MEMMODE_BOOST_FREQ_MASK) >>
1026                    MEMMODE_BOOST_FREQ_SHIFT);
1027         seq_printf(m, "HW control enabled: %s\n",
1028                    rgvmodectl & MEMMODE_HWIDLE_EN ? "yes" : "no");
1029         seq_printf(m, "SW control enabled: %s\n",
1030                    rgvmodectl & MEMMODE_SWMODE_EN ? "yes" : "no");
1031         seq_printf(m, "Gated voltage change: %s\n",
1032                    rgvmodectl & MEMMODE_RCLK_GATE ? "yes" : "no");
1033         seq_printf(m, "Starting frequency: P%d\n",
1034                    (rgvmodectl & MEMMODE_FSTART_MASK) >> MEMMODE_FSTART_SHIFT);
1035         seq_printf(m, "Max P-state: P%d\n",
1036                    (rgvmodectl & MEMMODE_FMAX_MASK) >> MEMMODE_FMAX_SHIFT);
1037         seq_printf(m, "Min P-state: P%d\n", (rgvmodectl & MEMMODE_FMIN_MASK));
1038         seq_printf(m, "RS1 VID: %d\n", (crstandvid & 0x3f));
1039         seq_printf(m, "RS2 VID: %d\n", ((crstandvid >> 8) & 0x3f));
1040         seq_printf(m, "Render standby enabled: %s\n",
1041                    (rstdbyctl & RCX_SW_EXIT) ? "no" : "yes");
1042         seq_printf(m, "Current RS state: ");
1043         switch (rstdbyctl & RSX_STATUS_MASK) {
1044         case RSX_STATUS_ON:
1045                 seq_printf(m, "on\n");
1046                 break;
1047         case RSX_STATUS_RC1:
1048                 seq_printf(m, "RC1\n");
1049                 break;
1050         case RSX_STATUS_RC1E:
1051                 seq_printf(m, "RC1E\n");
1052                 break;
1053         case RSX_STATUS_RS1:
1054                 seq_printf(m, "RS1\n");
1055                 break;
1056         case RSX_STATUS_RS2:
1057                 seq_printf(m, "RS2 (RC6)\n");
1058                 break;
1059         case RSX_STATUS_RS3:
1060                 seq_printf(m, "RC3 (RC6+)\n");
1061                 break;
1062         default:
1063                 seq_printf(m, "unknown\n");
1064                 break;
1065         }
1066
1067         return 0;
1068 }
1069
1070 static int i915_fbc_status(struct seq_file *m, void *unused)
1071 {
1072         struct drm_info_node *node = (struct drm_info_node *) m->private;
1073         struct drm_device *dev = node->minor->dev;
1074         drm_i915_private_t *dev_priv = dev->dev_private;
1075
1076         if (!I915_HAS_FBC(dev)) {
1077                 seq_printf(m, "FBC unsupported on this chipset\n");
1078                 return 0;
1079         }
1080
1081         if (intel_fbc_enabled(dev)) {
1082                 seq_printf(m, "FBC enabled\n");
1083         } else {
1084                 seq_printf(m, "FBC disabled: ");
1085                 switch (dev_priv->no_fbc_reason) {
1086                 case FBC_NO_OUTPUT:
1087                         seq_printf(m, "no outputs");
1088                         break;
1089                 case FBC_STOLEN_TOO_SMALL:
1090                         seq_printf(m, "not enough stolen memory");
1091                         break;
1092                 case FBC_UNSUPPORTED_MODE:
1093                         seq_printf(m, "mode not supported");
1094                         break;
1095                 case FBC_MODE_TOO_LARGE:
1096                         seq_printf(m, "mode too large");
1097                         break;
1098                 case FBC_BAD_PLANE:
1099                         seq_printf(m, "FBC unsupported on plane");
1100                         break;
1101                 case FBC_NOT_TILED:
1102                         seq_printf(m, "scanout buffer not tiled");
1103                         break;
1104                 case FBC_MULTIPLE_PIPES:
1105                         seq_printf(m, "multiple pipes are enabled");
1106                         break;
1107                 case FBC_MODULE_PARAM:
1108                         seq_printf(m, "disabled per module param (default off)");
1109                         break;
1110                 default:
1111                         seq_printf(m, "unknown reason");
1112                 }
1113                 seq_printf(m, "\n");
1114         }
1115         return 0;
1116 }
1117
1118 static int i915_sr_status(struct seq_file *m, void *unused)
1119 {
1120         struct drm_info_node *node = (struct drm_info_node *) m->private;
1121         struct drm_device *dev = node->minor->dev;
1122         drm_i915_private_t *dev_priv = dev->dev_private;
1123         bool sr_enabled = false;
1124
1125         if (HAS_PCH_SPLIT(dev))
1126                 sr_enabled = I915_READ(WM1_LP_ILK) & WM1_LP_SR_EN;
1127         else if (IS_CRESTLINE(dev) || IS_I945G(dev) || IS_I945GM(dev))
1128                 sr_enabled = I915_READ(FW_BLC_SELF) & FW_BLC_SELF_EN;
1129         else if (IS_I915GM(dev))
1130                 sr_enabled = I915_READ(INSTPM) & INSTPM_SELF_EN;
1131         else if (IS_PINEVIEW(dev))
1132                 sr_enabled = I915_READ(DSPFW3) & PINEVIEW_SELF_REFRESH_EN;
1133
1134         seq_printf(m, "self-refresh: %s\n",
1135                    sr_enabled ? "enabled" : "disabled");
1136
1137         return 0;
1138 }
1139
1140 static int i915_emon_status(struct seq_file *m, void *unused)
1141 {
1142         struct drm_info_node *node = (struct drm_info_node *) m->private;
1143         struct drm_device *dev = node->minor->dev;
1144         drm_i915_private_t *dev_priv = dev->dev_private;
1145         unsigned long temp, chipset, gfx;
1146         int ret;
1147
1148         ret = mutex_lock_interruptible(&dev->struct_mutex);
1149         if (ret)
1150                 return ret;
1151
1152         temp = i915_mch_val(dev_priv);
1153         chipset = i915_chipset_val(dev_priv);
1154         gfx = i915_gfx_val(dev_priv);
1155         mutex_unlock(&dev->struct_mutex);
1156
1157         seq_printf(m, "GMCH temp: %ld\n", temp);
1158         seq_printf(m, "Chipset power: %ld\n", chipset);
1159         seq_printf(m, "GFX power: %ld\n", gfx);
1160         seq_printf(m, "Total power: %ld\n", chipset + gfx);
1161
1162         return 0;
1163 }
1164
1165 static int i915_ring_freq_table(struct seq_file *m, void *unused)
1166 {
1167         struct drm_info_node *node = (struct drm_info_node *) m->private;
1168         struct drm_device *dev = node->minor->dev;
1169         drm_i915_private_t *dev_priv = dev->dev_private;
1170         int ret;
1171         int gpu_freq, ia_freq;
1172
1173         if (!(IS_GEN6(dev) || IS_GEN7(dev))) {
1174                 seq_printf(m, "unsupported on this chipset\n");
1175                 return 0;
1176         }
1177
1178         ret = mutex_lock_interruptible(&dev->struct_mutex);
1179         if (ret)
1180                 return ret;
1181
1182         seq_printf(m, "GPU freq (MHz)\tEffective CPU freq (MHz)\n");
1183
1184         for (gpu_freq = dev_priv->min_delay; gpu_freq <= dev_priv->max_delay;
1185              gpu_freq++) {
1186                 I915_WRITE(GEN6_PCODE_DATA, gpu_freq);
1187                 I915_WRITE(GEN6_PCODE_MAILBOX, GEN6_PCODE_READY |
1188                            GEN6_PCODE_READ_MIN_FREQ_TABLE);
1189                 if (wait_for((I915_READ(GEN6_PCODE_MAILBOX) &
1190                               GEN6_PCODE_READY) == 0, 10)) {
1191                         DRM_ERROR("pcode read of freq table timed out\n");
1192                         continue;
1193                 }
1194                 ia_freq = I915_READ(GEN6_PCODE_DATA);
1195                 seq_printf(m, "%d\t\t%d\n", gpu_freq * 50, ia_freq * 100);
1196         }
1197
1198         mutex_unlock(&dev->struct_mutex);
1199
1200         return 0;
1201 }
1202
1203 static int i915_gfxec(struct seq_file *m, void *unused)
1204 {
1205         struct drm_info_node *node = (struct drm_info_node *) m->private;
1206         struct drm_device *dev = node->minor->dev;
1207         drm_i915_private_t *dev_priv = dev->dev_private;
1208         int ret;
1209
1210         ret = mutex_lock_interruptible(&dev->struct_mutex);
1211         if (ret)
1212                 return ret;
1213
1214         seq_printf(m, "GFXEC: %ld\n", (unsigned long)I915_READ(0x112f4));
1215
1216         mutex_unlock(&dev->struct_mutex);
1217
1218         return 0;
1219 }
1220
1221 static int i915_opregion(struct seq_file *m, void *unused)
1222 {
1223         struct drm_info_node *node = (struct drm_info_node *) m->private;
1224         struct drm_device *dev = node->minor->dev;
1225         drm_i915_private_t *dev_priv = dev->dev_private;
1226         struct intel_opregion *opregion = &dev_priv->opregion;
1227         int ret;
1228
1229         ret = mutex_lock_interruptible(&dev->struct_mutex);
1230         if (ret)
1231                 return ret;
1232
1233         if (opregion->header)
1234                 seq_write(m, opregion->header, OPREGION_SIZE);
1235
1236         mutex_unlock(&dev->struct_mutex);
1237
1238         return 0;
1239 }
1240
1241 static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
1242 {
1243         struct drm_info_node *node = (struct drm_info_node *) m->private;
1244         struct drm_device *dev = node->minor->dev;
1245         drm_i915_private_t *dev_priv = dev->dev_private;
1246         struct intel_fbdev *ifbdev;
1247         struct intel_framebuffer *fb;
1248         int ret;
1249
1250         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1251         if (ret)
1252                 return ret;
1253
1254         ifbdev = dev_priv->fbdev;
1255         fb = to_intel_framebuffer(ifbdev->helper.fb);
1256
1257         seq_printf(m, "fbcon size: %d x %d, depth %d, %d bpp, obj ",
1258                    fb->base.width,
1259                    fb->base.height,
1260                    fb->base.depth,
1261                    fb->base.bits_per_pixel);
1262         describe_obj(m, fb->obj);
1263         seq_printf(m, "\n");
1264
1265         list_for_each_entry(fb, &dev->mode_config.fb_list, base.head) {
1266                 if (&fb->base == ifbdev->helper.fb)
1267                         continue;
1268
1269                 seq_printf(m, "user size: %d x %d, depth %d, %d bpp, obj ",
1270                            fb->base.width,
1271                            fb->base.height,
1272                            fb->base.depth,
1273                            fb->base.bits_per_pixel);
1274                 describe_obj(m, fb->obj);
1275                 seq_printf(m, "\n");
1276         }
1277
1278         mutex_unlock(&dev->mode_config.mutex);
1279
1280         return 0;
1281 }
1282
1283 static int i915_context_status(struct seq_file *m, void *unused)
1284 {
1285         struct drm_info_node *node = (struct drm_info_node *) m->private;
1286         struct drm_device *dev = node->minor->dev;
1287         drm_i915_private_t *dev_priv = dev->dev_private;
1288         int ret;
1289
1290         ret = mutex_lock_interruptible(&dev->mode_config.mutex);
1291         if (ret)
1292                 return ret;
1293
1294         if (dev_priv->pwrctx) {
1295                 seq_printf(m, "power context ");
1296                 describe_obj(m, dev_priv->pwrctx);
1297                 seq_printf(m, "\n");
1298         }
1299
1300         if (dev_priv->renderctx) {
1301                 seq_printf(m, "render context ");
1302                 describe_obj(m, dev_priv->renderctx);
1303                 seq_printf(m, "\n");
1304         }
1305
1306         mutex_unlock(&dev->mode_config.mutex);
1307
1308         return 0;
1309 }
1310
1311 static int i915_gen6_forcewake_count_info(struct seq_file *m, void *data)
1312 {
1313         struct drm_info_node *node = (struct drm_info_node *) m->private;
1314         struct drm_device *dev = node->minor->dev;
1315         struct drm_i915_private *dev_priv = dev->dev_private;
1316
1317         seq_printf(m, "forcewake count = %d\n",
1318                    atomic_read(&dev_priv->forcewake_count));
1319
1320         return 0;
1321 }
1322
1323 static int
1324 i915_wedged_open(struct inode *inode,
1325                  struct file *filp)
1326 {
1327         filp->private_data = inode->i_private;
1328         return 0;
1329 }
1330
1331 static ssize_t
1332 i915_wedged_read(struct file *filp,
1333                  char __user *ubuf,
1334                  size_t max,
1335                  loff_t *ppos)
1336 {
1337         struct drm_device *dev = filp->private_data;
1338         drm_i915_private_t *dev_priv = dev->dev_private;
1339         char buf[80];
1340         int len;
1341
1342         len = snprintf(buf, sizeof(buf),
1343                        "wedged :  %d\n",
1344                        atomic_read(&dev_priv->mm.wedged));
1345
1346         if (len > sizeof(buf))
1347                 len = sizeof(buf);
1348
1349         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1350 }
1351
1352 static ssize_t
1353 i915_wedged_write(struct file *filp,
1354                   const char __user *ubuf,
1355                   size_t cnt,
1356                   loff_t *ppos)
1357 {
1358         struct drm_device *dev = filp->private_data;
1359         char buf[20];
1360         int val = 1;
1361
1362         if (cnt > 0) {
1363                 if (cnt > sizeof(buf) - 1)
1364                         return -EINVAL;
1365
1366                 if (copy_from_user(buf, ubuf, cnt))
1367                         return -EFAULT;
1368                 buf[cnt] = 0;
1369
1370                 val = simple_strtoul(buf, NULL, 0);
1371         }
1372
1373         DRM_INFO("Manually setting wedged to %d\n", val);
1374         i915_handle_error(dev, val);
1375
1376         return cnt;
1377 }
1378
1379 static const struct file_operations i915_wedged_fops = {
1380         .owner = THIS_MODULE,
1381         .open = i915_wedged_open,
1382         .read = i915_wedged_read,
1383         .write = i915_wedged_write,
1384         .llseek = default_llseek,
1385 };
1386
1387 static int
1388 i915_max_freq_open(struct inode *inode,
1389                    struct file *filp)
1390 {
1391         filp->private_data = inode->i_private;
1392         return 0;
1393 }
1394
1395 static ssize_t
1396 i915_max_freq_read(struct file *filp,
1397                    char __user *ubuf,
1398                    size_t max,
1399                    loff_t *ppos)
1400 {
1401         struct drm_device *dev = filp->private_data;
1402         drm_i915_private_t *dev_priv = dev->dev_private;
1403         char buf[80];
1404         int len;
1405
1406         len = snprintf(buf, sizeof(buf),
1407                        "max freq: %d\n", dev_priv->max_delay * 50);
1408
1409         if (len > sizeof(buf))
1410                 len = sizeof(buf);
1411
1412         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1413 }
1414
1415 static ssize_t
1416 i915_max_freq_write(struct file *filp,
1417                   const char __user *ubuf,
1418                   size_t cnt,
1419                   loff_t *ppos)
1420 {
1421         struct drm_device *dev = filp->private_data;
1422         struct drm_i915_private *dev_priv = dev->dev_private;
1423         char buf[20];
1424         int val = 1;
1425
1426         if (cnt > 0) {
1427                 if (cnt > sizeof(buf) - 1)
1428                         return -EINVAL;
1429
1430                 if (copy_from_user(buf, ubuf, cnt))
1431                         return -EFAULT;
1432                 buf[cnt] = 0;
1433
1434                 val = simple_strtoul(buf, NULL, 0);
1435         }
1436
1437         DRM_DEBUG_DRIVER("Manually setting max freq to %d\n", val);
1438
1439         /*
1440          * Turbo will still be enabled, but won't go above the set value.
1441          */
1442         dev_priv->max_delay = val / 50;
1443
1444         gen6_set_rps(dev, val / 50);
1445
1446         return cnt;
1447 }
1448
1449 static const struct file_operations i915_max_freq_fops = {
1450         .owner = THIS_MODULE,
1451         .open = i915_max_freq_open,
1452         .read = i915_max_freq_read,
1453         .write = i915_max_freq_write,
1454         .llseek = default_llseek,
1455 };
1456
1457 static int
1458 i915_cache_sharing_open(struct inode *inode,
1459                    struct file *filp)
1460 {
1461         filp->private_data = inode->i_private;
1462         return 0;
1463 }
1464
1465 static ssize_t
1466 i915_cache_sharing_read(struct file *filp,
1467                    char __user *ubuf,
1468                    size_t max,
1469                    loff_t *ppos)
1470 {
1471         struct drm_device *dev = filp->private_data;
1472         drm_i915_private_t *dev_priv = dev->dev_private;
1473         char buf[80];
1474         u32 snpcr;
1475         int len;
1476
1477         mutex_lock(&dev_priv->dev->struct_mutex);
1478         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1479         mutex_unlock(&dev_priv->dev->struct_mutex);
1480
1481         len = snprintf(buf, sizeof(buf),
1482                        "%d\n", (snpcr & GEN6_MBC_SNPCR_MASK) >>
1483                        GEN6_MBC_SNPCR_SHIFT);
1484
1485         if (len > sizeof(buf))
1486                 len = sizeof(buf);
1487
1488         return simple_read_from_buffer(ubuf, max, ppos, buf, len);
1489 }
1490
1491 static ssize_t
1492 i915_cache_sharing_write(struct file *filp,
1493                   const char __user *ubuf,
1494                   size_t cnt,
1495                   loff_t *ppos)
1496 {
1497         struct drm_device *dev = filp->private_data;
1498         struct drm_i915_private *dev_priv = dev->dev_private;
1499         char buf[20];
1500         u32 snpcr;
1501         int val = 1;
1502
1503         if (cnt > 0) {
1504                 if (cnt > sizeof(buf) - 1)
1505                         return -EINVAL;
1506
1507                 if (copy_from_user(buf, ubuf, cnt))
1508                         return -EFAULT;
1509                 buf[cnt] = 0;
1510
1511                 val = simple_strtoul(buf, NULL, 0);
1512         }
1513
1514         if (val < 0 || val > 3)
1515                 return -EINVAL;
1516
1517         DRM_DEBUG_DRIVER("Manually setting uncore sharing to %d\n", val);
1518
1519         /* Update the cache sharing policy here as well */
1520         snpcr = I915_READ(GEN6_MBCUNIT_SNPCR);
1521         snpcr &= ~GEN6_MBC_SNPCR_MASK;
1522         snpcr |= (val << GEN6_MBC_SNPCR_SHIFT);
1523         I915_WRITE(GEN6_MBCUNIT_SNPCR, snpcr);
1524
1525         return cnt;
1526 }
1527
1528 static const struct file_operations i915_cache_sharing_fops = {
1529         .owner = THIS_MODULE,
1530         .open = i915_cache_sharing_open,
1531         .read = i915_cache_sharing_read,
1532         .write = i915_cache_sharing_write,
1533         .llseek = default_llseek,
1534 };
1535
1536 /* As the drm_debugfs_init() routines are called before dev->dev_private is
1537  * allocated we need to hook into the minor for release. */
1538 static int
1539 drm_add_fake_info_node(struct drm_minor *minor,
1540                        struct dentry *ent,
1541                        const void *key)
1542 {
1543         struct drm_info_node *node;
1544
1545         node = kmalloc(sizeof(struct drm_info_node), GFP_KERNEL);
1546         if (node == NULL) {
1547                 debugfs_remove(ent);
1548                 return -ENOMEM;
1549         }
1550
1551         node->minor = minor;
1552         node->dent = ent;
1553         node->info_ent = (void *) key;
1554
1555         mutex_lock(&minor->debugfs_lock);
1556         list_add(&node->list, &minor->debugfs_list);
1557         mutex_unlock(&minor->debugfs_lock);
1558
1559         return 0;
1560 }
1561
1562 static int i915_wedged_create(struct dentry *root, struct drm_minor *minor)
1563 {
1564         struct drm_device *dev = minor->dev;
1565         struct dentry *ent;
1566
1567         ent = debugfs_create_file("i915_wedged",
1568                                   S_IRUGO | S_IWUSR,
1569                                   root, dev,
1570                                   &i915_wedged_fops);
1571         if (IS_ERR(ent))
1572                 return PTR_ERR(ent);
1573
1574         return drm_add_fake_info_node(minor, ent, &i915_wedged_fops);
1575 }
1576
1577 static int i915_forcewake_open(struct inode *inode, struct file *file)
1578 {
1579         struct drm_device *dev = inode->i_private;
1580         struct drm_i915_private *dev_priv = dev->dev_private;
1581         int ret;
1582
1583         if (!IS_GEN6(dev))
1584                 return 0;
1585
1586         ret = mutex_lock_interruptible(&dev->struct_mutex);
1587         if (ret)
1588                 return ret;
1589         gen6_gt_force_wake_get(dev_priv);
1590         mutex_unlock(&dev->struct_mutex);
1591
1592         return 0;
1593 }
1594
1595 int i915_forcewake_release(struct inode *inode, struct file *file)
1596 {
1597         struct drm_device *dev = inode->i_private;
1598         struct drm_i915_private *dev_priv = dev->dev_private;
1599
1600         if (!IS_GEN6(dev))
1601                 return 0;
1602
1603         /*
1604          * It's bad that we can potentially hang userspace if struct_mutex gets
1605          * forever stuck.  However, if we cannot acquire this lock it means that
1606          * almost certainly the driver has hung, is not unload-able. Therefore
1607          * hanging here is probably a minor inconvenience not to be seen my
1608          * almost every user.
1609          */
1610         mutex_lock(&dev->struct_mutex);
1611         gen6_gt_force_wake_put(dev_priv);
1612         mutex_unlock(&dev->struct_mutex);
1613
1614         return 0;
1615 }
1616
1617 static const struct file_operations i915_forcewake_fops = {
1618         .owner = THIS_MODULE,
1619         .open = i915_forcewake_open,
1620         .release = i915_forcewake_release,
1621 };
1622
1623 static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
1624 {
1625         struct drm_device *dev = minor->dev;
1626         struct dentry *ent;
1627
1628         ent = debugfs_create_file("i915_forcewake_user",
1629                                   S_IRUSR,
1630                                   root, dev,
1631                                   &i915_forcewake_fops);
1632         if (IS_ERR(ent))
1633                 return PTR_ERR(ent);
1634
1635         return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
1636 }
1637
1638 static int i915_max_freq_create(struct dentry *root, struct drm_minor *minor)
1639 {
1640         struct drm_device *dev = minor->dev;
1641         struct dentry *ent;
1642
1643         ent = debugfs_create_file("i915_max_freq",
1644                                   S_IRUGO | S_IWUSR,
1645                                   root, dev,
1646                                   &i915_max_freq_fops);
1647         if (IS_ERR(ent))
1648                 return PTR_ERR(ent);
1649
1650         return drm_add_fake_info_node(minor, ent, &i915_max_freq_fops);
1651 }
1652
1653 static int i915_cache_sharing_create(struct dentry *root, struct drm_minor *minor)
1654 {
1655         struct drm_device *dev = minor->dev;
1656         struct dentry *ent;
1657
1658         ent = debugfs_create_file("i915_cache_sharing",
1659                                   S_IRUGO | S_IWUSR,
1660                                   root, dev,
1661                                   &i915_cache_sharing_fops);
1662         if (IS_ERR(ent))
1663                 return PTR_ERR(ent);
1664
1665         return drm_add_fake_info_node(minor, ent, &i915_cache_sharing_fops);
1666 }
1667
1668 static struct drm_info_list i915_debugfs_list[] = {
1669         {"i915_capabilities", i915_capabilities, 0},
1670         {"i915_gem_objects", i915_gem_object_info, 0},
1671         {"i915_gem_gtt", i915_gem_gtt_info, 0},
1672         {"i915_gem_active", i915_gem_object_list_info, 0, (void *) ACTIVE_LIST},
1673         {"i915_gem_flushing", i915_gem_object_list_info, 0, (void *) FLUSHING_LIST},
1674         {"i915_gem_inactive", i915_gem_object_list_info, 0, (void *) INACTIVE_LIST},
1675         {"i915_gem_pinned", i915_gem_object_list_info, 0, (void *) PINNED_LIST},
1676         {"i915_gem_deferred_free", i915_gem_object_list_info, 0, (void *) DEFERRED_FREE_LIST},
1677         {"i915_gem_pageflip", i915_gem_pageflip_info, 0},
1678         {"i915_gem_request", i915_gem_request_info, 0},
1679         {"i915_gem_seqno", i915_gem_seqno_info, 0},
1680         {"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
1681         {"i915_gem_interrupt", i915_interrupt_info, 0},
1682         {"i915_gem_hws", i915_hws_info, 0, (void *)RCS},
1683         {"i915_gem_hws_blt", i915_hws_info, 0, (void *)BCS},
1684         {"i915_gem_hws_bsd", i915_hws_info, 0, (void *)VCS},
1685         {"i915_ringbuffer_data", i915_ringbuffer_data, 0, (void *)RCS},
1686         {"i915_ringbuffer_info", i915_ringbuffer_info, 0, (void *)RCS},
1687         {"i915_bsd_ringbuffer_data", i915_ringbuffer_data, 0, (void *)VCS},
1688         {"i915_bsd_ringbuffer_info", i915_ringbuffer_info, 0, (void *)VCS},
1689         {"i915_blt_ringbuffer_data", i915_ringbuffer_data, 0, (void *)BCS},
1690         {"i915_blt_ringbuffer_info", i915_ringbuffer_info, 0, (void *)BCS},
1691         {"i915_batchbuffers", i915_batchbuffer_info, 0},
1692         {"i915_error_state", i915_error_state, 0},
1693         {"i915_rstdby_delays", i915_rstdby_delays, 0},
1694         {"i915_cur_delayinfo", i915_cur_delayinfo, 0},
1695         {"i915_delayfreq_table", i915_delayfreq_table, 0},
1696         {"i915_inttoext_table", i915_inttoext_table, 0},
1697         {"i915_drpc_info", i915_drpc_info, 0},
1698         {"i915_emon_status", i915_emon_status, 0},
1699         {"i915_ring_freq_table", i915_ring_freq_table, 0},
1700         {"i915_gfxec", i915_gfxec, 0},
1701         {"i915_fbc_status", i915_fbc_status, 0},
1702         {"i915_sr_status", i915_sr_status, 0},
1703         {"i915_opregion", i915_opregion, 0},
1704         {"i915_gem_framebuffer", i915_gem_framebuffer_info, 0},
1705         {"i915_context_status", i915_context_status, 0},
1706         {"i915_gen6_forcewake_count", i915_gen6_forcewake_count_info, 0},
1707 };
1708 #define I915_DEBUGFS_ENTRIES ARRAY_SIZE(i915_debugfs_list)
1709
1710 int i915_debugfs_init(struct drm_minor *minor)
1711 {
1712         int ret;
1713
1714         ret = i915_wedged_create(minor->debugfs_root, minor);
1715         if (ret)
1716                 return ret;
1717
1718         ret = i915_forcewake_create(minor->debugfs_root, minor);
1719         if (ret)
1720                 return ret;
1721         ret = i915_max_freq_create(minor->debugfs_root, minor);
1722         if (ret)
1723                 return ret;
1724         ret = i915_cache_sharing_create(minor->debugfs_root, minor);
1725         if (ret)
1726                 return ret;
1727
1728         return drm_debugfs_create_files(i915_debugfs_list,
1729                                         I915_DEBUGFS_ENTRIES,
1730                                         minor->debugfs_root, minor);
1731 }
1732
1733 void i915_debugfs_cleanup(struct drm_minor *minor)
1734 {
1735         drm_debugfs_remove_files(i915_debugfs_list,
1736                                  I915_DEBUGFS_ENTRIES, minor);
1737         drm_debugfs_remove_files((struct drm_info_list *) &i915_forcewake_fops,
1738                                  1, minor);
1739         drm_debugfs_remove_files((struct drm_info_list *) &i915_wedged_fops,
1740                                  1, minor);
1741         drm_debugfs_remove_files((struct drm_info_list *) &i915_max_freq_fops,
1742                                  1, minor);
1743         drm_debugfs_remove_files((struct drm_info_list *) &i915_cache_sharing_fops,
1744                                  1, minor);
1745 }
1746
1747 #endif /* CONFIG_DEBUG_FS */